:root{--thu-purple: #5f2b7a;--thu-purple-dark: #45205b;--thu-purple-soft: #f5f0f8;--thu-purple-line: #d9c9e3;--thu-ink: #262832;--thu-muted: #686271;--thu-border: #e7e0ec;--thu-surface: #ffffff;--thu-page: #f6f4f7;--accent-gold: #b98a2e;--accent-red: #b64b4b;--accent-green: #287a5d;color:var(--thu-ink);background:var(--thu-page);font-family:Aptos,Segoe UI,PingFang SC,Microsoft YaHei,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}button{color:inherit;font:inherit}button,a,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}:where(button,a,input,select,textarea,summary):focus-visible{outline:3px solid rgba(95,43,122,.28);outline-offset:2px}.auth-screen{position:relative;isolation:isolate;min-height:100dvh;display:grid;grid-template-rows:minmax(0,1fr) auto;align-items:center;justify-items:center;overflow:hidden;padding:clamp(24px,4vw,56px);background:radial-gradient(circle at 12% 18%,rgba(95,43,122,.09),transparent 30%),radial-gradient(circle at 86% 82%,rgba(95,43,122,.06),transparent 28%),#f4f1f5}.auth-screen:before{position:absolute;z-index:-1;top:0;right:0;bottom:0;left:0;opacity:.18;background-image:linear-gradient(rgba(69,32,91,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(69,32,91,.08) 1px,transparent 1px);background-size:48px 48px;content:"";-webkit-mask-image:linear-gradient(to bottom,transparent,#000 18%,#000 78%,transparent);mask-image:linear-gradient(to bottom,transparent,#000 18%,#000 78%,transparent)}.auth-layout{display:grid;grid-template-columns:minmax(0,1.18fr) minmax(390px,.82fr);width:min(100%,1120px);min-height:min(690px,calc(100dvh - 150px));overflow:hidden;border:1px solid rgba(69,32,91,.1);border-radius:26px;background:#fff;box-shadow:0 34px 90px #3a27412e,0 2px 10px #3a274112}.auth-story{position:relative;display:grid;grid-template-rows:auto minmax(0,1fr) auto auto;gap:30px;overflow:hidden;padding:48px 58px 44px;color:#fff;background:#432052}.auth-story:before,.auth-story:after{position:absolute;content:"";pointer-events:none}.auth-story:before{right:-8%;bottom:-20%;width:78%;aspect-ratio:1;border:1px solid rgba(255,255,255,.08);border-radius:50%;box-shadow:0 0 0 48px #ffffff06,0 0 0 96px #ffffff05}.auth-story:after{top:0;right:0;bottom:0;left:0;opacity:.16;background-image:radial-gradient(rgba(255,255,255,.45) .6px,transparent .6px);background-size:7px 7px;-webkit-mask-image:linear-gradient(135deg,#000,transparent 62%);mask-image:linear-gradient(135deg,#000,transparent 62%)}.auth-story__brandline,.auth-story__intro,.auth-story__journey,.auth-story__boundary{position:relative;z-index:1}.auth-story__brandline{display:flex;align-items:center;gap:12px}.auth-story__brandline>span{display:grid;width:40px;height:40px;place-items:center;border:1px solid rgba(255,255,255,.3);border-radius:11px 4px;color:#fff;font-size:13px;font-weight:800;letter-spacing:.06em}.auth-story__brandline strong,.auth-story__brandline small{display:block}.auth-story__brandline strong{font-size:15px;font-weight:700;letter-spacing:.015em}.auth-story__brandline small{margin-top:2px;color:#ffffff9e;font-size:12px}.auth-story__intro{align-self:center;max-width:620px}.auth-story__intro h1,.auth-story__intro p{margin:0}.auth-story__intro h1{max-width:11em;margin-top:18px;font-family:Segoe UI Variable Display,PingFang SC,Microsoft YaHei,sans-serif;font-size:clamp(38px,4.2vw,58px);font-weight:720;line-height:1.13;letter-spacing:-.045em;text-wrap:balance}.auth-story__intro p{max-width:34em;margin-top:22px;color:#ffffffb8;font-size:15px;line-height:1.8;text-wrap:pretty}.auth-story__eyebrow{color:#dfc7e8;font-size:11px;font-weight:750;letter-spacing:.15em;text-transform:uppercase}.auth-story__journey{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px;margin:0;padding:0;list-style:none}.auth-story__journey li{display:grid;grid-template-columns:30px minmax(0,1fr);gap:10px;padding:15px 0 14px;border-top:1px solid rgba(255,255,255,.14)}.auth-story__journey li>span{color:#d6b6e1;font-size:11px;font-weight:750;font-variant-numeric:tabular-nums;letter-spacing:.05em}.auth-story__journey strong,.auth-story__journey small{display:block}.auth-story__journey strong{font-size:14px;font-weight:650}.auth-story__journey small{margin-top:4px;color:#ffffff91;font-size:12px;line-height:1.45}.auth-story .auth-story__boundary{margin:0;color:#ffffff8c;font-size:11px;line-height:1.55}.auth-panel{width:100%;display:grid;align-content:center;gap:34px;padding:64px 58px 70px;background:#fff}.auth-screen>.auth-panel{width:min(100%,420px);border:1px solid var(--thu-border);border-radius:18px;box-shadow:0 18px 46px #372d431f}.auth-panel>svg{color:var(--thu-purple)}.auth-panel h1,.auth-panel h2,.auth-panel p{margin:0}.auth-panel h1,.auth-panel h2{color:var(--thu-ink);font-family:Segoe UI Variable Display,PingFang SC,Microsoft YaHei,sans-serif;font-size:clamp(29px,3vw,36px);font-weight:720;line-height:1.15;letter-spacing:-.035em}.auth-panel p{color:var(--thu-muted);line-height:1.65}.auth-panel__header{display:grid;gap:10px}.auth-panel__header>p{max-width:29em;font-size:14px;text-wrap:pretty}.auth-panel__eyebrow{display:inline-flex;align-items:center;gap:8px;width:fit-content;color:var(--thu-purple);font-size:12px;font-weight:750;letter-spacing:.08em}.auth-panel__eyebrow i{width:7px;height:7px;border-radius:50%;background:var(--accent-green);box-shadow:0 0 0 4px #287a5d1a}.auth-form{display:grid;gap:17px}.auth-form label{display:grid;gap:8px;color:var(--thu-ink);font-size:13px;font-weight:650}.auth-form input{width:100%;min-height:52px;padding:0 15px;border:1px solid #dcd3e1;border-radius:10px;outline:0;background:#fcfbfc;color:var(--thu-ink);font:inherit;transition:border-color .18s ease,background .18s ease,box-shadow .18s ease}.auth-form input::placeholder{color:#aaa3af}.auth-form input:hover{border-color:#c9b8d2;background:#fff}.auth-form input:focus{border-color:var(--thu-purple);background:#fff;box-shadow:0 0 0 4px #5f2b7a1a}.auth-password-field{position:relative;display:block}.auth-password-field input{padding-right:68px}.auth-password-field>button{position:absolute;top:50%;right:7px;min-height:36px;padding:0 10px;border:0;border-radius:7px;background:transparent;color:var(--thu-purple);font-size:12px;font-weight:650;transform:translateY(-50%)}.auth-password-field>button:hover{background:var(--thu-purple-soft)}.auth-form>button{min-height:52px;margin-top:3px;border:1px solid var(--thu-purple);border-radius:10px;background:var(--thu-purple);color:#fff;font-weight:700;cursor:pointer;box-shadow:0 12px 24px #45205b29;transition:transform .18s ease,background .18s ease,box-shadow .18s ease}.auth-form>button:hover:not(:disabled){background:var(--thu-purple-dark);box-shadow:0 15px 28px #45205b38;transform:translateY(-1px)}.auth-form>button:active:not(:disabled){box-shadow:0 7px 15px #45205b2e;transform:translateY(1px)}.auth-form>button:disabled{border-color:#d9d2dc;background:#d9d2dc;box-shadow:none;cursor:not-allowed}.auth-error{margin:0;padding:11px 13px;border-left:3px solid #b64b4b;border-radius:0 8px 8px 0;background:#fff2f2;color:#993a3a!important;font-size:13px}.auth-panel__help{padding:16px 17px 17px;border:1px solid #ebe5ee;border-radius:12px;background:#faf8fb}.auth-panel__help strong{display:block;margin-bottom:5px;color:var(--thu-purple-dark);font-size:13px}.auth-panel__help p{font-size:12px;line-height:1.6}@media(max-width:900px){.auth-screen{align-items:start;padding:20px}.auth-layout{grid-template-columns:1fr;min-height:0}.auth-story{grid-template-rows:auto auto auto;padding:34px 38px 30px}.auth-story__intro{margin-top:16px}.auth-story__intro h1{max-width:14em;font-size:clamp(32px,6vw,44px)}.auth-story__journey{margin-top:4px}.auth-story__boundary{display:none}.auth-panel{padding:46px 38px 50px}}@media(max-width:560px){.auth-screen{padding:0;overflow:visible}.auth-screen:before{display:none}.auth-layout{min-height:100dvh;border:0;border-radius:0;box-shadow:none}.auth-story{gap:20px;padding:25px 22px 28px}.auth-story__intro{margin-top:6px}.auth-story__intro h1{margin-top:12px;font-size:29px;line-height:1.18}.auth-story__intro p{margin-top:14px;font-size:13px;line-height:1.65}.auth-story__journey{display:none}.auth-panel{align-content:start;gap:25px;padding:34px 22px 44px}.auth-panel h2{font-size:30px}}.screen{min-height:100vh;max-width:720px;margin:0 auto;padding:0 22px 220px;background:var(--thu-surface);box-shadow:0 0 0 1px #5f2b7a0f}.compliance-footer{display:flex;align-items:center;justify-content:space-between;gap:24px;width:min(100%,1120px);padding:18px 20px;color:var(--thu-muted);font-size:12px;line-height:1.5}.auth-screen>.compliance-footer{margin-top:16px;border:1px solid rgba(69,32,91,.09);border-radius:15px;background:#ffffffad;box-shadow:0 10px 32px #3a27410d;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.screen>.compliance-footer{margin-top:28px;border-top:1px solid var(--thu-border)}.compliance-footer__identity,.compliance-footer__identity>span:last-child,.compliance-footer__records a>span{min-width:0}.compliance-footer__identity{display:flex;align-items:center;gap:11px;flex:0 0 auto}.compliance-footer__monogram{display:grid;width:34px;height:34px;place-items:center;border:1px solid var(--thu-purple-line);border-radius:10px 3px;background:#fff;color:var(--thu-purple-dark);font-size:10px;font-weight:800;letter-spacing:.07em}.compliance-footer__identity strong,.compliance-footer__identity small,.compliance-footer__records small,.compliance-footer__records strong{display:block}.compliance-footer__identity strong{color:var(--thu-ink);font-size:12px;font-weight:700}.compliance-footer__identity small{margin-top:1px;color:var(--thu-muted);font-size:10px;white-space:nowrap}.compliance-footer__records{display:flex;align-items:stretch;min-width:0}.compliance-footer__records a{display:flex;align-items:center;gap:9px;min-width:0;padding:2px 18px;border-left:1px solid var(--thu-border);color:var(--thu-purple-dark);text-decoration:none;transition:color .16s ease,background .16s ease}.compliance-footer__records a:first-child{border-left:0}.compliance-footer__records a:hover{color:var(--thu-purple)}.compliance-footer__records a:hover strong{text-decoration:underline;text-underline-offset:3px}.compliance-footer__records svg{flex:0 0 auto;color:var(--thu-purple)}.compliance-footer__public-security-mark{width:18px;height:20px;flex:0 0 auto;object-fit:contain}.compliance-footer__records small{color:var(--thu-muted);font-size:9px;font-weight:600;letter-spacing:.06em}.compliance-footer__records strong{margin-top:1px;color:inherit;font-size:11px;font-weight:650;white-space:nowrap}@media(max-width:760px){.compliance-footer{align-items:flex-start;flex-direction:column;gap:14px}.compliance-footer__records{width:100%}.compliance-footer__records a{flex:1 1 50%;padding:2px 14px}.compliance-footer__records a:first-child{padding-left:0}}@media(max-width:520px){.auth-screen>.compliance-footer{margin:0;border-width:1px 0 0;border-radius:0;box-shadow:none}.compliance-footer{padding:17px 22px 20px}.compliance-footer__records{align-items:flex-start;flex-direction:column;gap:11px}.compliance-footer__records a{width:100%;padding:0;border-left:0}}.topbar{position:sticky;top:0;z-index:4;display:flex;justify-content:center;align-items:center;height:74px;background:#fffffff7;border-bottom:2px solid var(--thu-purple)}.topbar h1{margin:0;text-align:center;font-size:24px;font-weight:700;color:var(--thu-purple-dark);letter-spacing:0}.topbar__back{position:absolute;left:0;display:inline-flex;align-items:center;gap:6px;min-height:38px;padding:0 10px;border:0;background:transparent;color:var(--thu-purple-dark);cursor:pointer}.account-chip{position:absolute;right:0;display:inline-flex;align-items:center;max-width:min(46%,240px);min-height:38px;overflow:hidden;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark)}.account-chip>svg{flex:0 0 auto;margin-left:9px}.account-chip span{min-width:0;padding-left:6px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:700}.account-chip em{flex:0 0 auto;padding:0 8px;color:var(--thu-muted);font-size:12px;font-style:normal}.account-chip button{display:grid;place-items:center;flex:0 0 34px;align-self:stretch;border:0;border-left:1px solid var(--thu-purple-line);background:transparent;color:var(--thu-purple-dark);cursor:pointer}.role-switch{position:absolute;right:0;display:inline-flex;overflow:hidden;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff}.role-switch button{display:inline-flex;align-items:center;gap:5px;min-height:34px;padding:0 10px;border:0;border-right:1px solid var(--thu-purple-line);background:transparent;color:var(--thu-purple-dark);cursor:pointer}.role-switch button:last-child{border-right:0}.role-switch__button--active{background:var(--thu-purple)!important;color:#fff!important}.icon-button,.share-button,.playback,.round-button,.record-button{border:0;cursor:pointer}.icon-button{display:grid;place-items:center;width:44px;height:44px;background:transparent}.share-button{display:inline-flex;align-items:center;gap:6px;min-height:42px;background:transparent;color:#6f6b69;white-space:nowrap}.lesson-panel{margin-top:22px;padding:16px;border:1px solid var(--thu-border);border-radius:8px;background:#fdfcff}.library-view,.edit-lesson-view{margin-top:22px}.library-title{margin:0 0 26px;color:var(--thu-purple);font-size:32px;line-height:1.2}.library-view__header,.create-lesson-panel,.edit-lesson-view{padding:18px 20px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.library-view__header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:28px;background:#fbfafc}.student-home-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:28px;margin-bottom:28px;padding:26px 28px;overflow:hidden;border:1px solid var(--thu-purple-line);border-radius:12px;background:radial-gradient(circle at 93% 14%,rgba(95,43,122,.09),transparent 30%),linear-gradient(135deg,#fff,#faf6fc)}.student-home-hero .section-eyebrow,.student-home-hero h3,.student-home-hero p{margin:0}.student-home-hero .section-eyebrow{color:var(--thu-purple);font-size:12px;font-weight:850;letter-spacing:.06em}.student-home-hero h3{margin-top:7px;font-size:clamp(23px,3vw,30px);line-height:1.25}.student-home-hero p{max-width:42em;margin-top:8px;line-height:1.65}.student-home-hero__action{display:grid;justify-items:end;gap:10px;min-width:180px}.student-home-hero__action span{color:var(--thu-muted);font-size:12px}.student-home-hero__action a{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 17px;border-radius:8px;background:var(--thu-purple);color:#fff;font-size:14px;font-weight:800;text-decoration:none}.student-home-hero__action a:hover{background:var(--thu-purple-dark)}.student-switcher{display:grid;gap:8px;min-width:0;color:var(--thu-purple-dark);font-size:13px;justify-items:end}.library-view__identity{margin:0;flex:0 0 auto;max-width:210px;padding:8px 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font-size:13px;line-height:1.35}.interaction-section{margin-top:44px}.interaction-entry-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.interaction-entry-card{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:14px;min-height:96px;padding:16px 18px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);text-align:left}.interaction-entry-card:hover{border-color:var(--thu-purple-line);background:#fbf8fd}.interaction-entry-card:disabled{border-style:dashed;background:#f7f5f8;color:var(--thu-muted);cursor:not-allowed;opacity:1}.interaction-entry-card:disabled:hover{border-color:var(--thu-border);background:#f7f5f8}.interaction-entry-card:disabled svg{color:#95899b}.interaction-entry-card svg{color:var(--thu-purple)}.interaction-entry-card strong,.interaction-entry-card span{display:block}.interaction-entry-card strong{font-size:17px}.interaction-entry-card span{margin-top:5px;color:var(--thu-muted);line-height:1.45}.student-switcher>div{display:inline-flex;width:max-content;overflow:hidden;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff}.student-switcher button{min-height:34px;padding:0 10px;border:0;border-right:1px solid var(--thu-purple-line);background:transparent;color:var(--thu-purple-dark);cursor:pointer;white-space:nowrap}.student-switcher button:last-child{border-right:0}.student-switcher__button--active{background:var(--thu-purple)!important;color:#fff!important}.library-view h2,.edit-lesson-view h2{margin:0;color:var(--thu-ink);font-size:22px}.library-view .library-title{margin:0 0 26px;color:var(--thu-purple);font-size:32px}.library-view h3{margin:0;color:var(--thu-ink);font-size:20px}.library-view p,.edit-lesson-view p{margin:7px 0 0;color:var(--thu-muted);font-size:15px;line-height:1.55}.library-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;margin:10px 0 0}.library-list{display:grid;gap:9px;margin:12px 0 0}.library-section{margin-top:24px}.library-section__heading{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.library-section__heading p{max-width:46em;margin-top:5px;font-size:13px}.library-section__heading>span{flex:0 0 auto;padding:4px 9px;border-radius:999px;background:var(--thu-purple-soft);color:var(--thu-purple-dark);font-size:12px;font-weight:800}.student-practice-intro{margin-top:34px;padding-top:26px;border-top:1px solid var(--thu-border);scroll-margin-top:92px}.student-practice-intro .section-eyebrow{color:var(--thu-purple);font-size:12px;font-weight:850;letter-spacing:.06em}.student-practice-intro h3{margin-top:6px;font-size:23px}.student-practice-intro p{max-width:48em}.library-section h3{margin:0;color:var(--thu-purple-dark);font-size:17px}.library-section.interaction-section h3{margin-bottom:22px}.lesson-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;min-height:64px;padding:13px 16px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:#5d5365;text-align:left;cursor:pointer}.lesson-card:hover{border-color:var(--thu-purple-line);background:#fbf8fd}.lesson-card svg{color:var(--thu-purple)}.lesson-card strong{color:var(--thu-ink);font-size:16px;line-height:1.35}.lesson-card small{color:var(--thu-muted);font-size:13px;white-space:nowrap}.assignment-section{padding:16px 18px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fbf8fd;scroll-margin-top:92px}.assignment-section__header{display:flex;align-items:center;justify-content:space-between;gap:12px}.assignment-section__header .section-eyebrow{font-size:15px}.assignment-section__header h3{margin:2px 0 0}.student-feedback-panel{display:block;padding:16px 18px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.student-feedback-panel__summary{position:relative;display:flex;align-items:center;justify-content:space-between;gap:18px;cursor:pointer;list-style:none}.student-feedback-panel__summary::-webkit-details-marker{display:none}.student-feedback-panel__summary:after{flex:0 0 auto;color:var(--thu-purple);content:"＋";font-size:22px;font-weight:500}.student-feedback-panel[open]>.student-feedback-panel__summary:after{content:"−"}.student-feedback-panel__summary span,.student-feedback-panel__summary strong{display:block}.student-feedback-panel__summary .section-eyebrow{color:var(--thu-purple);font-size:12px;font-weight:850;letter-spacing:.06em}.student-feedback-panel__summary strong{margin-top:4px;color:var(--thu-ink);font-size:17px;line-height:1.4}.student-feedback-panel__summary em{margin-left:auto;color:var(--thu-muted);font-size:12px;font-style:normal;white-space:nowrap}.student-feedback-panel__body{display:grid;gap:14px;margin-top:16px;padding-top:16px;border-top:1px solid var(--thu-border)}.student-feedback-panel__header{display:flex;align-items:center;justify-content:space-between;gap:12px}.student-feedback-panel__header p{margin:0;font-size:13px}.student-feedback-panel__header button{display:inline-flex;align-items:center;gap:7px;min-height:36px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-weight:800;cursor:pointer;white-space:nowrap}.student-feedback-form{display:grid;gap:10px}.student-feedback-form input,.student-feedback-form select,.student-feedback-form textarea,.teacher-feedback-card textarea{width:100%;min-height:40px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit}.student-feedback-form textarea,.teacher-feedback-card textarea{min-height:92px;padding:10px 12px;resize:vertical;line-height:1.5}.student-feedback-form button,.teacher-feedback-card__actions button{min-height:40px;border:0;border-radius:8px;background:var(--thu-purple);color:#fff;font:inherit;font-weight:800;cursor:pointer}.student-feedback-form button:disabled,.teacher-feedback-card__actions button:disabled{background:#a99ab3;cursor:default}.student-feedback-class,.student-feedback-status,.teacher-feedback-status{margin:0;color:var(--thu-muted);line-height:1.55}.feedback-record-list,.teacher-feedback-list{display:grid;gap:10px}.feedback-record,.teacher-feedback-card{display:grid;gap:10px;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.feedback-record--open,.teacher-feedback-card--open{border-color:var(--thu-purple-line);background:#fbf8fd}.feedback-record__top,.teacher-feedback-card__summary{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.teacher-feedback-status-tabs{display:flex;flex-wrap:wrap;gap:10px}.teacher-feedback-status-tabs button{display:inline-flex;align-items:center;gap:8px;min-height:40px;padding:0 14px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-weight:800;cursor:pointer}.teacher-feedback-status-tabs button.is-active{background:var(--thu-purple);color:#fff}.teacher-feedback-status-tabs span{min-width:24px;padding:2px 7px;border-radius:999px;background:#ffffff47;text-align:center}.teacher-feedback-status-tabs button:not(.is-active) span{background:#f2ebf6}.teacher-feedback-card{padding:0;overflow:hidden}.teacher-feedback-card__summary{min-height:72px;padding:14px;cursor:pointer;list-style:none}.teacher-feedback-card__summary::-webkit-details-marker{display:none}.teacher-feedback-card__summary:hover{background:#682e8109}.teacher-feedback-card__body{display:grid;gap:10px;padding:0 14px 14px}.feedback-record span,.feedback-record small,.teacher-feedback-card span,.teacher-feedback-card small{color:var(--thu-muted);line-height:1.45}.feedback-record strong,.teacher-feedback-card strong{display:block;color:var(--thu-ink);font-size:17px;line-height:1.35}.feedback-record p,.teacher-feedback-card__message{margin:0;color:var(--thu-ink);line-height:1.6}.feedback-record em,.teacher-feedback-card em{padding:4px 9px;border-radius:999px;background:#fff;color:var(--thu-purple-dark);font-style:normal;font-weight:800;white-space:nowrap}.feedback-record--resolved em,.teacher-feedback-card--resolved em{color:var(--accent-green)}.feedback-record__reply{display:grid;gap:5px;padding:10px 12px;border:1px solid #d8e8df;border-radius:8px;background:#f7fcf9}.teacher-feedback-card label{display:grid;gap:7px;color:var(--thu-purple-dark);font-weight:800}.teacher-feedback-card__actions{display:flex;flex-wrap:wrap;gap:10px}.teacher-feedback-card__actions button{padding:0 14px}.teacher-feedback-card__actions .secondary-button{border:1px solid var(--thu-purple-line);background:#fff;color:var(--thu-purple-dark)}.assignment-list{display:grid;gap:10px;margin-top:12px}.assignment-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:14px;padding:14px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff}.assignment-card--done{border-color:var(--thu-border);background:#fcfbfd}.assignment-card span,.assignment-card small,.assignment-card p{color:var(--thu-muted)}.assignment-card span,.assignment-card strong,.assignment-card small{display:block}.assignment-card span{font-size:13px}.assignment-card strong{margin-top:4px;color:var(--thu-ink);font-size:16px;line-height:1.35}.assignment-card small{margin-top:4px;font-size:13px}.assignment-card p{margin:8px 0 0;font-size:14px;line-height:1.45}.assignment-card__side{display:grid;align-content:center;justify-items:end;gap:7px;min-width:96px}.assignment-card__side em{color:var(--accent-green);font-size:13px;font-style:normal;font-weight:700}.assignment-card__side button{min-height:36px;padding:0 12px;border:0;border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer}.completed-assignment-panel{margin-top:14px}.completed-assignment-panel summary{cursor:pointer;color:var(--thu-purple-dark);font-weight:800}.assignment-source-banner,.security-nudge{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fbf8fd}.assignment-source-banner{grid-template-columns:minmax(0,1fr) auto}.assignment-source-banner span,.assignment-source-banner strong,.assignment-source-banner p,.security-nudge strong,.security-nudge p{margin:0}.assignment-source-banner span,.security-nudge strong{color:var(--thu-purple-dark);font-weight:800}.assignment-source-banner strong{padding:6px 10px;border-radius:999px;background:#eaf7ef;color:var(--accent-green);font-size:14px}.assignment-source-banner p{grid-column:1 / -1;color:var(--thu-muted);line-height:1.45}.security-nudge svg{color:var(--thu-purple)}.security-nudge p{margin-top:3px;color:var(--thu-muted);line-height:1.45}.security-nudge button,.password-form button{min-height:38px;padding:0 13px;border:0;border-radius:8px;background:var(--thu-purple);color:#fff;font:inherit;font-weight:800;cursor:pointer}.create-lesson-panel{margin-top:28px}.create-lesson-panel>.section-eyebrow{font-size:18px;line-height:1.25}.panel-help{margin:6px 0 0;color:var(--thu-muted);font-size:14px;line-height:1.5}.teacher-material-list{margin-top:12px}.teacher-dashboard{display:grid;gap:24px;margin-top:22px}.teacher-dashboard__hero{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:20px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.teacher-dashboard__hero h2{margin:0;color:var(--thu-ink);font-size:22px}.teacher-dashboard__hero p{margin:8px 0 0;color:var(--thu-muted);line-height:1.6}.teacher-dashboard__hero button{display:inline-flex;align-items:center;gap:7px;min-height:38px;padding:0 12px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer;white-space:nowrap}.teacher-dashboard__hero button:disabled{opacity:.65;cursor:default}.teacher-dashboard__stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.teacher-dashboard__stats--four{grid-template-columns:repeat(4,1fr)}.teacher-dashboard__stats div{min-height:76px;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-dashboard__stats span,.teacher-record span{color:var(--thu-muted)}.teacher-dashboard__stats strong{display:block;margin-top:5px;color:var(--thu-purple);font-size:26px}.teacher-home-tabs{display:flex;flex-wrap:wrap;gap:10px;padding:8px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-home-tabs button{display:inline-flex;align-items:center;gap:8px;min-height:42px;padding:0 16px;border:1px solid transparent;border-radius:8px;background:transparent;color:var(--thu-purple-dark);font:inherit;font-weight:700;cursor:pointer}.teacher-home-tabs button.is-active{border-color:var(--thu-purple-line);background:#fbf8fd}.teacher-home-tabs span{min-width:24px;padding:2px 7px;border-radius:999px;background:var(--thu-purple);color:#fff;font-size:13px;text-align:center}.teacher-panel-shell{display:grid;gap:16px;padding:22px 24px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-overview-next{margin:0}.teacher-overview-actions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.teacher-overview-actions button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:52px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fbf8fd;color:var(--thu-purple-dark);font:inherit;font-weight:800;cursor:pointer}.teacher-overview{display:grid;gap:18px}.teacher-overview__command{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(340px,.8fr);overflow:hidden;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-overview__priority{padding:26px 28px;border-right:1px solid var(--thu-border);background:linear-gradient(135deg,rgba(102,45,145,.07),transparent 58%),#fbfafc}.teacher-overview__priority h3{max-width:720px;margin:7px 0 0;color:var(--thu-ink);font-size:clamp(23px,2.2vw,32px);line-height:1.22}.teacher-overview__priority>p{max-width:720px;margin:10px 0 0;color:var(--thu-muted);line-height:1.65}.teacher-overview__priority-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}.teacher-overview__priority-actions button,.teacher-overview__section-header button,.teacher-overview__class-recency button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:0 13px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-size:14px;font-weight:800;cursor:pointer}.teacher-overview__priority-actions button:first-child{border-color:var(--thu-purple);background:var(--thu-purple);color:#fff}.teacher-overview__signals{display:grid;grid-template-columns:1fr 1fr}.teacher-overview__signals>div{min-width:0;padding:20px;border-right:1px solid var(--thu-border);border-bottom:1px solid var(--thu-border)}.teacher-overview__signals>div:nth-child(2n){border-right:0}.teacher-overview__signals>div:nth-last-child(-n+2){border-bottom:0}.teacher-overview__signals span,.teacher-overview__signals small{display:block;color:var(--thu-muted);line-height:1.4}.teacher-overview__signals strong{display:block;margin:5px 0;color:var(--thu-purple);font-size:28px}.teacher-overview__signals small{font-size:12px}.teacher-overview__workspace{display:grid;grid-template-columns:minmax(0,1fr);gap:14px;align-items:start}.teacher-overview__section{min-width:0;padding:20px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-overview__section-header{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;margin-bottom:14px}.teacher-overview__section-header h4{margin:3px 0 0;color:var(--thu-ink);font-size:20px}.teacher-overview__section-header>span{color:var(--thu-muted);font-size:13px}.teacher-overview__aggregation-note{margin:-5px 0 10px;color:var(--thu-muted);font-size:13px;line-height:1.5}.teacher-overview__class-list,.teacher-overview__recent-list{display:grid;border-top:1px solid var(--thu-border)}.teacher-overview__class-row{display:grid;grid-template-columns:minmax(155px,.9fr) minmax(190px,1.15fr) auto;align-items:center;gap:18px;min-height:78px;border-bottom:1px solid var(--thu-border)}.teacher-overview__class-identity strong,.teacher-overview__class-identity span,.teacher-overview__class-recency span{display:block}.teacher-overview__class-identity strong{color:var(--thu-ink)}.teacher-overview__class-identity span,.teacher-overview__class-recency span,.teacher-overview__progress small{margin-top:3px;color:var(--thu-muted);font-size:13px}.teacher-overview__progress>div{overflow:hidden;height:7px;border-radius:999px;background:#ece5f0}.teacher-overview__progress>div>span{display:block;height:100%;border-radius:inherit;background:var(--thu-purple)}.teacher-overview__class-recency{display:flex;align-items:center;justify-content:flex-end;gap:10px;white-space:nowrap}.teacher-overview__class-recency button{min-height:34px}.teacher-overview__recent-list>button{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:14px;min-height:70px;padding:10px 0;border:0;border-bottom:1px solid var(--thu-border);background:transparent;color:inherit;font:inherit;text-align:left;cursor:pointer}.teacher-overview__recent-list>button:hover{background:#fbf8fd}.teacher-overview__recent-list>button>div{min-width:0}.teacher-overview__recent-list>button>div:nth-child(2){text-align:right;white-space:nowrap}.teacher-overview__recent-list strong,.teacher-overview__recent-list span{display:block}.teacher-overview__recent-list span{overflow:hidden;margin-top:3px;color:var(--thu-muted);font-size:13px;text-overflow:ellipsis;white-space:nowrap}.teacher-overview__recent-list em{min-width:56px;padding:4px 7px;border-radius:999px;background:#f2eef4;color:var(--thu-muted);font-size:12px;font-style:normal;font-weight:800;text-align:center;white-space:nowrap}.teacher-overview__recent-list em.is-pending{background:#fff4df;color:#80570b}.teacher-system-details{overflow:hidden;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-system-details>summary{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:70px;padding:12px 18px;cursor:pointer}.teacher-system-details>summary strong,.teacher-system-details>summary span{display:block}.teacher-system-details>summary strong{color:var(--thu-ink)}.teacher-system-details>summary span{margin-top:3px;color:var(--thu-muted);font-size:13px}.teacher-system-details>summary em{color:var(--thu-purple-dark);font-size:13px;font-style:normal;font-weight:800;text-align:right}.teacher-system-details[open]>summary{border-bottom:1px solid var(--thu-border)}.teacher-system-details>.speech-usage-panel{border:0;border-radius:0}.speech-usage-panel{display:grid;gap:14px;padding:16px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.speech-usage-panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.speech-usage-panel__header h4{margin:0;color:var(--thu-ink);font-size:20px}.speech-usage-panel__header p,.speech-usage-empty{margin:6px 0 0;color:var(--thu-muted);line-height:1.55}.speech-usage-panel__header button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:36px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-weight:800;cursor:pointer;white-space:nowrap}.speech-usage-panel__controls{display:flex;align-items:center;gap:8px}.speech-usage-periods{display:inline-flex;overflow:hidden;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff}.speech-usage-periods button{min-height:34px;border:0;border-right:1px solid var(--thu-purple-line);border-radius:0;background:transparent;color:var(--thu-muted)}.speech-usage-periods button:last-child{border-right:0}.speech-usage-periods button.is-active{background:var(--thu-purple);color:#fff}.speech-usage-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--thu-border);border-radius:8px;background:#fff}.speech-usage-summary>div{min-width:0;padding:14px 16px;border-right:1px solid var(--thu-border)}.speech-usage-summary>div:last-child{border-right:0}.speech-usage-summary span,.speech-usage-summary small,.speech-usage-service-row span,.speech-usage-service-row small,.speech-usage-subhead span,.speech-usage-models span,.speech-usage-models small{display:block;color:var(--thu-muted);line-height:1.45}.speech-usage-summary strong{display:block;margin:4px 0;color:var(--thu-purple);font-size:27px}.speech-usage-summary small,.speech-usage-service-row small,.speech-usage-models small{font-size:12px}.speech-usage-services,.speech-usage-operations,.speech-usage-trend,.speech-usage-models{overflow:hidden;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.speech-usage-operation-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.speech-usage-operation-grid>div{min-width:0;padding:12px 14px;border-right:1px solid var(--thu-border);border-bottom:1px solid var(--thu-border)}.speech-usage-operation-grid>div:nth-child(3n){border-right:0}.speech-usage-operation-grid>div:nth-last-child(-n+2){border-bottom:0}.speech-usage-operation-grid span,.speech-usage-operation-grid small{display:block;color:var(--thu-muted);line-height:1.45}.speech-usage-operation-grid strong{display:block;margin:3px 0;color:var(--thu-purple-dark);font-size:17px}.speech-usage-operation-grid small{font-size:12px}.speech-usage-subhead{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:44px;padding:8px 14px;border-bottom:1px solid var(--thu-border);background:#fbfafc}.speech-usage-subhead strong{color:var(--thu-ink);font-size:14px}.speech-usage-subhead span{font-size:12px}.speech-usage-service-row{display:grid;grid-template-columns:minmax(180px,1.25fr) minmax(120px,.8fr) minmax(130px,.8fr);align-items:center;gap:18px;min-height:68px;padding:10px 14px;border-bottom:1px solid var(--thu-border)}.speech-usage-service-row:last-child{border-bottom:0}.speech-usage-service-row>div{min-width:0}.speech-usage-service-row>div:first-child>strong{color:var(--thu-ink)}.speech-usage-service-row>div:not(:first-child)>strong{display:block;margin-top:2px;color:var(--thu-purple-dark);font-size:17px}.speech-usage-lower{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:12px}.speech-usage-trend__rows{padding:7px 14px 10px}.speech-usage-trend__rows>div{display:grid;grid-template-columns:46px minmax(80px,1fr) 34px 54px;align-items:center;gap:8px;min-height:31px;color:var(--thu-muted);font-size:12px}.speech-usage-trend__rows>div>div{overflow:hidden;height:6px;border-radius:999px;background:#ece5f0}.speech-usage-trend__rows i{display:block;height:100%;border-radius:inherit;background:var(--thu-purple)}.speech-usage-trend__rows strong{color:var(--thu-ink);text-align:right}.speech-usage-trend__rows small{color:var(--accent-green);text-align:right}.speech-usage-trend__rows small.has-error{color:var(--accent-red)}.speech-usage-models>div:not(.speech-usage-subhead){display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 12px;padding:9px 14px;border-bottom:1px solid var(--thu-border)}.speech-usage-models>div:last-child{border-bottom:0}.speech-usage-models>div>strong{color:var(--thu-purple-dark);font-size:13px;text-align:right}.speech-usage-models>div>small{grid-column:1 / -1}.speech-usage-models>p{margin:0;padding:14px;color:var(--thu-muted)}.speech-usage-cost-note{margin:0;padding:10px 12px;border-left:3px solid var(--accent-gold);background:#fff9eb;color:#6f571e;font-size:13px;line-height:1.55}.teacher-stat-note{margin:-8px 0 0;color:var(--thu-muted);font-size:14px;line-height:1.6}.teacher-report-panel{display:grid;gap:16px;padding:18px 20px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;box-shadow:0 10px 22px #45205b0f}.teacher-qa-panel{display:grid;gap:14px;padding:18px 20px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-report-panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.teacher-report-panel .section-eyebrow{font-size:21px;line-height:1.2}.teacher-report-panel__header h3,.teacher-report-next h4,.teacher-report-columns h4{margin:0;color:var(--thu-purple-dark)}.teacher-report-panel__header h3{font-size:24px;line-height:1.25}.teacher-report-panel__header p,.teacher-report-columns p,.teacher-report-next p{margin:0;color:var(--thu-muted);font-size:15px;line-height:1.55}.teacher-report-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.teacher-report-metrics div{min-height:70px;padding:12px 14px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.teacher-report-metrics span{display:block;color:var(--thu-muted);font-size:15px}.teacher-report-metrics strong{display:block;margin-top:5px;color:var(--thu-ink);font-size:24px}.teacher-report-columns{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:14px}.teacher-report-columns>div{min-width:0}.teacher-report-list{display:grid;gap:8px;margin-top:10px}.teacher-report-list button{width:100%;padding:10px 12px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);text-align:left;cursor:pointer}.teacher-report-list button:hover{border-color:var(--thu-purple-line);background:#fbf8fd}.teacher-report-list strong,.teacher-report-list span{display:block}.teacher-report-list strong{font-size:15px}.teacher-report-list span{margin-top:4px;color:var(--thu-muted);font-size:14px;line-height:1.4}.teacher-report-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.teacher-report-tags span{padding:6px 9px;border:1px solid var(--thu-purple-line);border-radius:999px;background:var(--thu-purple-soft);color:var(--thu-purple-dark);font-size:13px}.teacher-report-tags--muted span{border-color:var(--thu-border);background:#fbfafc;color:var(--thu-muted)}.teacher-report-next{display:grid;gap:7px;padding:12px 14px;border:1px dashed var(--thu-purple-line);border-radius:8px;background:#fdfbff}.teacher-class-panel{display:grid;gap:18px;padding:22px 24px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-class-panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.teacher-class-panel__header h3,.teacher-class-card h4,.assignment-progress-panel h4{margin:0;color:var(--thu-purple-dark)}.teacher-class-panel__header .section-eyebrow,.assignment-progress-panel h4{font-size:22px;line-height:1.25}.teacher-class-panel__header p{margin:6px 0 0;color:var(--thu-muted);line-height:1.55}.teacher-class-selector{display:inline-flex;align-items:center;gap:10px}.teacher-class-selector select{min-width:220px;min-height:38px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit}.teacher-class-empty-select{display:inline-flex;align-items:center;min-height:38px;padding:0 12px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc;color:var(--thu-muted);white-space:nowrap}.teacher-class-panel__header button,.assignment-create-form button,.student-create-row button{min-height:38px;padding:0 12px;border:0;border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer}.teacher-class-panel__header button{white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;gap:7px}.teacher-class-grid{display:grid;grid-template-columns:1fr;gap:14px}.teacher-class-grid--single{grid-template-columns:1fr}.class-management-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,.85fr);gap:14px}.class-current-card strong{color:var(--thu-purple-dark);font-size:24px;line-height:1.2}.class-current-card span,.class-current-card p{margin:0;color:var(--thu-muted);line-height:1.45}.class-create-card button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;border:0;border-radius:8px;background:var(--thu-purple);color:#fff;font:inherit;font-weight:800;cursor:pointer}.class-hide-button{justify-self:start;min-height:34px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-weight:800;cursor:pointer}.class-lifecycle-actions{display:flex;flex-wrap:wrap;gap:8px}.class-lifecycle-actions button{min-height:34px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-weight:800;cursor:pointer}.class-lifecycle-actions .class-term-close-button{border-color:#bc7c24;color:#79500f;background:#fffaf0}.class-lifecycle-actions button:disabled{opacity:.58;cursor:wait}.class-lifecycle-note,.class-lifecycle-status{padding:10px 12px;border:1px solid #dfc17e;border-radius:8px;background:#fffaf0;color:#70510f!important;font-size:13px;line-height:1.55}.class-lifecycle-status{margin:0}.class-create-card button:disabled{background:#a99ab3;cursor:default}.hidden-class-card{background:#fff}.hidden-class-list{display:grid;gap:8px}.hidden-class-list div{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.hidden-class-list span{color:var(--thu-muted);font-weight:800}.closed-class-card>p{margin:0;color:var(--thu-muted);font-size:13px}.closed-class-card .hidden-class-list span strong,.closed-class-card .hidden-class-list span small{display:block}.closed-class-card .hidden-class-list span strong{color:var(--thu-ink)}.closed-class-card .hidden-class-list span small{margin-top:4px;color:var(--thu-muted);font-weight:500;line-height:1.45}.closed-class-lock{color:var(--thu-muted)!important;font-size:12px;white-space:nowrap}.hidden-class-list button{min-height:32px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-weight:800;cursor:pointer}.teacher-class-tabs{margin-top:2px;background:#fbfafc}.teacher-class-card,.assignment-progress-panel{display:grid;gap:12px;min-width:0;padding:18px 20px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.teacher-class-card select,.teacher-class-card input,.teacher-class-card textarea{width:100%;min-height:38px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit}.teacher-class-card textarea{min-height:76px;padding:10px;resize:vertical}.class-roster{display:flex;flex-wrap:wrap;gap:8px}.class-roster span{padding:7px 9px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font-size:13px}.student-create-row,.assignment-create-form{display:grid;gap:9px}.student-create-row{grid-template-columns:repeat(2,minmax(0,1fr))}.student-password-field,.bulk-password-field{display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px}.student-password-field span,.bulk-password-field span{color:var(--thu-purple-dark);font-weight:800;white-space:nowrap}.student-create-row button{grid-column:1 / -1}.student-create-row small{grid-column:1 / -1;color:var(--thu-muted);line-height:1.45}.bulk-student-card__header{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.bulk-student-card__header p{margin:6px 0 0;color:var(--thu-muted);line-height:1.45}.bulk-file-button{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:38px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);white-space:nowrap;cursor:pointer}.bulk-file-button input{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer}.bulk-student-card textarea{min-height:132px}.bulk-student-actions{display:grid;grid-template-columns:minmax(220px,1fr) auto;gap:9px}.bulk-student-actions button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:38px;padding:0 12px;border:0;border-radius:8px;background:var(--thu-purple);color:#fff;white-space:nowrap;cursor:pointer}.bulk-student-actions button:disabled{background:#a99ab3;cursor:default}.bulk-student-status{margin:0;color:var(--thu-purple-dark);line-height:1.45}.bulk-student-preview{display:flex;flex-wrap:wrap;gap:8px}.bulk-student-preview span{padding:7px 9px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font-size:13px}.bulk-student-card small{color:var(--thu-muted);line-height:1.45}.assignment-create-form button:disabled,.student-create-row button:disabled{background:#a99ab3;cursor:default}.assignment-audio-status{display:flex;align-items:center;justify-content:space-between;gap:10px;margin:0;padding:9px 11px;border:1px solid var(--thu-purple-line);border-radius:8px;background:var(--thu-purple-soft);color:var(--thu-purple-dark);font-size:13px;line-height:1.45}.assignment-audio-status button{flex:0 0 auto;min-height:32px;padding:0 10px}.assignment-audio-status--ready{border-color:#b9dfcc;background:#eef8f3;color:var(--accent-green)}.assignment-audio-status--failed,.assignment-audio-status--missing{border-color:#edc5bd;background:#fff5f2;color:#8b3a2d}.assignment-progress-panel__toolbar,.student-account-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px}.student-account-toolbar h4{margin:0;color:var(--thu-purple-dark)}.assignment-filter{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.assignment-filter button,.student-account-toolbar button,.assignment-progress-card__actions button,.student-account-row__actions button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:34px;padding:0 11px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-size:14px;font-weight:700;cursor:pointer}.assignment-filter button.is-active{background:var(--thu-purple);border-color:var(--thu-purple);color:#fff}.assignment-progress-list{display:grid;gap:12px}.assignment-progress-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(190px,.34fr) auto;align-items:center;gap:18px;min-height:118px;padding:18px 20px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.assignment-progress-card span,.assignment-progress-card small{display:block;color:var(--thu-muted);font-size:15px}.assignment-progress-card__main strong{display:block;margin-top:6px;color:var(--thu-ink);font-size:20px;line-height:1.35}.assignment-progress-card__main small{margin-top:5px;line-height:1.35}.assignment-progress-card__status{display:grid;gap:4px;justify-items:start}.assignment-progress-card__status strong{color:var(--thu-purple-dark);font-size:18px}.assignment-progress-card__score{display:grid;gap:2px;justify-items:end}.assignment-progress-card__score em{display:block;color:var(--thu-purple);font-size:34px;line-height:1;font-style:normal;font-weight:800;text-align:right}.assignment-progress-card__score small{text-align:right}.assignment-progress-card__actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.assignment-edit-form{display:grid;gap:8px}.assignment-edit-form input,.assignment-edit-form textarea{width:100%;min-height:38px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit}.assignment-edit-form textarea{min-height:72px;padding:10px;resize:vertical}.assignment-progress-card__pending{grid-column:1 / -1;display:flex;flex-wrap:wrap;gap:7px;padding-top:2px}.assignment-progress-card__pending span{padding:5px 9px;border:1px solid var(--thu-purple-line);border-radius:999px;background:#fbf8fd;color:var(--thu-purple-dark);font-size:13px;line-height:1.2}.assignment-page-evidence{grid-column:1 / -1;display:grid;gap:9px;padding-top:4px}.assignment-interactive-evidence{grid-column:1 / -1;display:grid;gap:9px;min-width:0;padding-top:4px}.assignment-interactive-evidence__rows{display:grid;max-height:420px;overflow:auto;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.assignment-interactive-row{display:grid;grid-template-columns:minmax(220px,1fr) minmax(130px,auto) auto;align-items:center;gap:14px;min-height:64px;padding:10px 13px;border-bottom:1px solid var(--thu-border)}.assignment-interactive-row:last-child{border-bottom:0}.assignment-interactive-row.is-complete{background:#fbfdfc}.assignment-interactive-row__student{min-width:0}.assignment-interactive-row__student strong,.assignment-interactive-row__student small{display:block}.assignment-interactive-row__student strong{color:var(--thu-ink);font-size:15px}.assignment-interactive-row__student small{margin-top:3px;font-size:13px;line-height:1.4}.assignment-interactive-row>span{color:var(--thu-muted);font-size:13px;text-align:right}.assignment-interactive-row>span.is-reviewed{color:var(--accent-green);font-weight:700}.assignment-interactive-row>button{min-height:36px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-weight:700;cursor:pointer}.assignment-interactive-row>button:hover{border-color:var(--thu-purple);background:var(--thu-purple-soft)}.assignment-interactive-row>em{color:var(--thu-muted);font-size:13px;font-style:normal;text-align:right}.assignment-page-evidence__heading{display:grid;gap:3px}.assignment-page-evidence__heading strong{color:var(--thu-ink);font-size:15px}.assignment-page-evidence__heading small{line-height:1.45}.assignment-student-evidence{overflow:hidden;border:1px solid var(--thu-border);border-radius:8px;background:#fcfbfd}.assignment-student-evidence summary{display:grid;grid-template-columns:minmax(0,1fr) 80px 44px;align-items:center;gap:16px;padding:11px 13px;cursor:pointer;list-style:none}.assignment-student-evidence summary::-webkit-details-marker{display:none}.assignment-student-evidence summary>div{min-width:0}.assignment-student-evidence summary strong,.assignment-student-evidence summary small{display:block}.assignment-student-evidence summary strong{color:var(--thu-ink);font-size:15px}.assignment-student-evidence summary small{margin-top:2px;font-size:13px}.assignment-student-evidence summary em{justify-self:center;min-width:64px;color:var(--thu-purple-dark);font-size:14px;font-style:normal;font-weight:800;text-align:center;white-space:nowrap}.assignment-student-evidence summary em.is-complete{color:var(--accent-green)}.assignment-student-evidence summary:after{content:"展开";justify-self:end;color:var(--thu-muted);font-size:12px;font-weight:700;text-align:right;white-space:nowrap}.assignment-student-evidence[open] summary:after{content:"收起"}.assignment-page-evidence__pages{display:grid;border-top:1px solid var(--thu-border);background:#fff}.assignment-page-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:62px;padding:9px 13px;border-bottom:1px solid var(--thu-border)}.assignment-page-row:last-child{border-bottom:0}.assignment-page-row>div{min-width:0}.assignment-page-row strong{display:flex;align-items:center;gap:7px;color:var(--thu-ink);font-size:14px}.assignment-page-row strong>span{color:var(--thu-muted)}.assignment-page-row.is-complete strong>svg{color:var(--accent-green)}.assignment-page-row small{margin-top:3px;font-size:13px;line-height:1.4}.assignment-page-row button{flex:0 0 auto;min-height:34px;padding:0 11px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-size:13px;font-weight:800;cursor:pointer}.assignment-page-row__missing{flex:0 0 auto;color:var(--thu-muted);font-size:13px}.archived-assignment-panel{margin-top:18px;padding:0 20px 20px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.archived-assignment-panel summary{display:flex;align-items:center;justify-content:space-between;min-height:58px;color:var(--thu-purple-dark);font-size:17px;font-weight:800;cursor:pointer}.archived-assignment-panel summary em{min-width:28px;padding:3px 8px;border-radius:999px;background:var(--thu-purple);color:#fff;font-size:13px;font-style:normal;text-align:center}.archived-assignment-panel__hint{margin:-2px 0 14px;color:var(--thu-muted);line-height:1.6}.assignment-progress-card--archived{background:#fff}.assignment-progress-card__actions button.danger-action{border-color:#e5b8b2;color:#9a3428}.assignment-progress-card__actions button:disabled{cursor:not-allowed;opacity:.48}.assignment-progress-card__pending--protected span{border-color:#e7cf9a;background:#fff9eb;color:#76520c}.teacher-student-account-panel{align-items:stretch}.student-account-list{display:grid;gap:10px}.student-account-row{display:grid;grid-template-columns:minmax(180px,.8fr) minmax(150px,.8fr) minmax(150px,.8fr) auto;align-items:center;gap:10px;padding:12px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.student-account-row--teacher{grid-template-columns:minmax(220px,1fr) auto auto;column-gap:18px}.student-account-row--teacher .account-state{white-space:nowrap}.student-account-row.is-inactive{background:#faf7f8;opacity:.82}.student-account-row__identity strong,.student-account-row__identity span{display:block}.student-account-row__identity strong{color:var(--thu-ink);font-size:17px}.student-account-row__identity span{margin-top:4px;color:var(--thu-muted);font-size:14px;line-height:1.35}.student-account-row input{width:100%;min-height:38px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit}.student-account-row__actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.password-modal{max-width:520px}.password-modal .teacher-modal__header{align-items:flex-start;grid-template-columns:minmax(0,1fr) auto}.password-modal__later{display:inline-flex;align-items:center;justify-content:center;min-width:72px;width:auto;white-space:nowrap;word-break:keep-all;writing-mode:horizontal-tb}.password-form{display:grid;gap:12px}.password-form label{display:grid;gap:6px}.password-form span{color:var(--thu-purple-dark);font-weight:800}.password-form input{width:100%;min-height:42px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit}.password-status{margin:0;color:var(--thu-purple-dark);line-height:1.45}.privacy-backdrop{z-index:70;background:#100c149e}.privacy-modal{width:min(820px,100%);max-height:min(92vh,880px);overflow:hidden;gap:14px}.privacy-modal__header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding-bottom:12px;border-bottom:1px solid var(--thu-border)}.privacy-modal__header h3,.privacy-modal__header p,.privacy-operator-card p,.privacy-status,.privacy-loading p{margin:0}.privacy-modal__header h3{margin:4px 0 6px;color:var(--thu-ink)}.privacy-modal__header p,.privacy-operator-card,.privacy-section li,.privacy-loading p{color:var(--thu-muted);line-height:1.55}.privacy-modal__version{flex:0 0 auto;padding:4px 8px;border-radius:999px;background:var(--thu-purple-pale);color:var(--thu-purple-dark);font-size:12px}.privacy-modal__body{overflow-y:auto;padding-right:8px}.privacy-operator-card{display:grid;gap:4px;padding:14px;border:1px solid var(--thu-purple-line);border-radius:8px;background:var(--thu-purple-pale)}.privacy-operator-card strong,.privacy-section h4{color:var(--thu-purple-dark)}.privacy-operator-card a{color:var(--thu-purple);font-weight:700}.privacy-section{padding:12px 2px 0}.privacy-section h4{margin:0 0 6px}.privacy-section ul{margin:0;padding-left:20px}.privacy-section li+li{margin-top:4px}.privacy-confirmation{display:flex;align-items:flex-start;gap:10px;padding:12px;border:1px solid var(--thu-border);border-radius:8px;color:var(--thu-ink);font-weight:700;line-height:1.5}.privacy-confirmation input{width:18px;height:18px;margin-top:2px;accent-color:var(--thu-purple)}.privacy-status{color:#9d281f}.privacy-modal__actions{display:flex;justify-content:flex-end;gap:10px}.privacy-modal__actions button,.privacy-loading button{min-height:42px;padding:0 16px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;font:inherit;font-weight:800;cursor:pointer}.privacy-modal__actions button:disabled{cursor:not-allowed;opacity:.45}.privacy-modal__actions .privacy-decline{border-color:var(--thu-border);background:#fff;color:var(--thu-muted)}.privacy-loading{display:grid;justify-items:start;gap:12px}.security-center-backdrop{z-index:65}.security-center{gap:12px}.security-center__header p,.security-center__section p,.security-record p,.security-empty,.maintenance-card p{margin:0;color:var(--thu-muted);line-height:1.5}.security-center__section{display:grid;gap:10px;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.security-center__section h4,.maintenance-card h4{margin:0 0 4px;color:var(--thu-purple-dark)}.deletion-request-form,.incident-form{display:grid;grid-template-columns:minmax(220px,.9fr) minmax(220px,1.4fr) auto;gap:8px}.deletion-request-form select,.deletion-request-form input,.incident-form select,.incident-form input{min-height:40px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit}.deletion-request-form button,.security-record__actions button,.maintenance-card button,.incident-form button{min-height:38px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:var(--thu-purple-pale);color:var(--thu-purple-dark);font:inherit;font-weight:800;cursor:pointer}.deletion-request-form button:disabled{cursor:not-allowed;opacity:.5}.security-record-list{display:grid;gap:8px}.security-record{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 12px;border-radius:8px;background:var(--thu-purple-pale)}.security-record>div:first-child{display:grid;gap:3px}.security-record strong{color:var(--thu-ink)}.security-record span{color:var(--thu-muted);font-size:13px}.security-record__actions{display:flex;flex:0 0 auto;gap:6px}.security-record__actions .security-danger,.maintenance-card--active button{border-color:#a6382e;background:#a6382e;color:#fff}.security-control-grid{grid-template-columns:1fr 1fr}.maintenance-card,.incident-form{display:grid;align-content:start;gap:8px;padding:12px;border:1px solid var(--thu-purple-line);border-radius:8px}.incident-form{grid-template-columns:120px 1fr auto}.incident-form .section-eyebrow{grid-column:1 / -1}.audit-table{display:grid;overflow:hidden;border:1px solid var(--thu-border);border-radius:8px}.audit-table>div{display:grid;grid-template-columns:minmax(170px,1.4fr) minmax(100px,.8fr) 80px 100px;gap:8px;padding:8px 10px;border-bottom:1px solid var(--thu-border);font-size:13px}.audit-table>div:last-child{border-bottom:0}.audit-table code{color:var(--thu-purple-dark)}.audit-table em,.audit-table time{color:var(--thu-muted);font-style:normal}.security-center__status{position:sticky;bottom:0;padding:10px 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font-weight:700}@media(max-width:760px){.deletion-request-form,.incident-form,.security-control-grid{grid-template-columns:1fr}.security-record{align-items:flex-start;flex-direction:column}.audit-table>div{grid-template-columns:1fr 1fr}}.teacher-qa-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:14px}.teacher-qa-latest{display:grid;gap:6px;min-width:0;padding:14px;border:1px solid var(--thu-purple-line);border-radius:8px;background:var(--thu-purple-soft)}.teacher-qa-latest span,.teacher-qa-latest small{color:var(--thu-muted)}.teacher-qa-latest strong{color:var(--thu-purple-dark);font-size:20px}.teacher-qa-latest p{margin:0;color:var(--thu-ink);line-height:1.5}.teacher-priority-panel{display:grid;gap:12px;padding:18px 20px;border:1px solid var(--thu-purple-line);border-radius:8px;background:linear-gradient(180deg,#fff,#fbf8fd)}.teacher-priority-panel h3{margin:4px 0 0;color:var(--thu-ink);font-size:20px}.teacher-priority-panel .section-eyebrow{font-size:18px;line-height:1.25}.teacher-priority-list{display:grid;gap:9px}.teacher-priority-card{display:grid;gap:5px;width:100%;padding:13px 14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);text-align:left;cursor:pointer}.teacher-priority-card:hover{border-color:var(--thu-purple-line);background:#fffafd}.teacher-priority-card strong{font-size:15px;line-height:1.35}.teacher-priority-card span{color:var(--thu-muted);font-size:13px;line-height:1.45}.teacher-priority-card--quiet{cursor:default}.teacher-priority-card--quiet:hover{border-color:var(--thu-border);background:#fff}.teacher-create-panel{margin-top:0}.teacher-create-panel h3,.teacher-dashboard__section h3{margin:0;color:var(--thu-purple-dark);font-size:18px}.teacher-create-panel .section-eyebrow{margin-bottom:8px}.teacher-topic-grid{display:grid;gap:16px;margin-top:12px}.teacher-topic-grid--stacked{grid-template-columns:1fr}.teacher-topic-group__header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:4px}.teacher-topic-group__header p{margin:5px 0 0;color:var(--thu-muted);font-size:13px;line-height:1.5}.teacher-topic-group__header button{min-height:36px;padding:0 12px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer;white-space:nowrap}.teacher-topic-editor{display:grid;gap:14px;margin:14px 0 18px;padding:16px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fbfafc}.teacher-topic-editor h4,.teacher-topic-editor p{margin:4px 0 0}.teacher-topic-editor p{color:var(--thu-muted);line-height:1.55}.teacher-topic-editor__grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:12px}.teacher-topic-editor__grid input,.teacher-topic-editor__grid select,.teacher-topic-editor__grid textarea{width:100%;border:1px solid var(--thu-border);border-radius:8px;color:var(--thu-ink);font:inherit}.teacher-topic-editor__grid input,.teacher-topic-editor__grid select{min-height:46px;padding:0 12px;background:#fff}.teacher-topic-editor__grid textarea{min-height:92px;padding:10px 12px;resize:vertical}.teacher-topic-editor__title,.teacher-topic-editor__topic{grid-column:span 6}.teacher-topic-editor__level,.teacher-topic-editor__rounds,.teacher-topic-editor__status{grid-column:span 4}.teacher-topic-editor__opening{grid-column:1 / -1}.teacher-topic-editor__situation,.teacher-topic-editor__goals{grid-column:span 6}.teacher-topic-editor__actions,.teacher-topic-item__actions{display:flex;flex-wrap:wrap;gap:8px}.teacher-topic-editor__actions button,.teacher-topic-item__actions button{min-height:34px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.teacher-topic-editor__actions button:first-child{border-color:var(--thu-purple);background:var(--thu-purple);color:#fff}.teacher-topic-grid>div{display:grid;align-content:start;gap:8px;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.teacher-topic-grid h4{margin:0;color:var(--thu-purple-dark)}.teacher-topic-item{padding:10px 12px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.teacher-topic-item strong,.teacher-topic-item span,.teacher-topic-item small{display:block}.teacher-topic-item strong{color:var(--thu-ink);font-size:14px;line-height:1.4}.teacher-topic-item span{margin-top:4px;color:var(--thu-muted);font-size:13px}.teacher-topic-item small{margin-top:7px;color:var(--thu-muted);font-size:13px;line-height:1.45}.teacher-topic-item__description{margin:8px 0 0;color:var(--thu-muted);font-size:13px;line-height:1.5}.teacher-topic-item__goals,.conversation-topic-card__goals,.conversation-goals div{display:flex;flex-wrap:wrap;gap:6px}.teacher-topic-item__goals,.conversation-topic-card__goals{margin-top:8px}.teacher-topic-item__goals em,.conversation-topic-card__goals em,.conversation-goals em{display:inline-flex;align-items:center;min-height:24px;padding:2px 8px;border:1px solid #e1d6ea;border-radius:999px;background:#fff;color:var(--thu-purple-dark);font-size:12px;font-style:normal;line-height:1.35}.teacher-topic-item__actions{margin-top:10px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:grid;place-items:center;padding:22px;background:#100c1461}.teacher-modal{display:grid;gap:16px;width:min(980px,100%);max-height:min(86vh,760px);overflow:auto;padding:20px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;box-shadow:0 24px 70px #22142a38}.teacher-modal--wide{width:min(1160px,calc(100vw - 32px))}.teacher-modal__header{display:flex;align-items:flex-start;justify-content:space-between;gap:14px}.teacher-modal__header h3{margin:4px 0 0;color:var(--thu-ink)}.teacher-modal__header button{min-height:34px;padding:0 12px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-muted);cursor:pointer}.teacher-modal__help{margin:-6px 0 0;color:var(--thu-muted);line-height:1.55}.qa-prompt-editor__grid .qa-prompt-editor__question,.qa-prompt-editor__grid .qa-prompt-editor__support{grid-column:1 / -1;min-height:76px;font-size:18px;line-height:1.45}.qa-prompt-editor__grid .qa-prompt-editor__support{min-height:64px}.inline-audio-button{display:inline-flex;align-items:center;gap:6px;width:fit-content;min-height:34px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.qa-transcript__footer{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:14px}.qa-transcript__footer>span{display:block}.qa-feedback--inside-modal{box-shadow:none}.teacher-comment-box{display:grid;gap:10px;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.teacher-comment-box h3,.teacher-comment-box span{margin:0}.teacher-comment-box span{color:var(--thu-muted);font-size:14px}.teacher-comment-box textarea{width:100%;min-height:108px;padding:10px 12px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit;line-height:1.55;resize:vertical}.teacher-comment-box__actions{display:flex;align-items:center;justify-content:flex-end;gap:10px}.teacher-comment-box__actions span{margin-right:auto;color:var(--accent-green)}.teacher-comment-box__actions button{min-height:38px;padding:0 12px;border:1px solid var(--accent-green);border-radius:8px;background:var(--accent-green);color:#fff;cursor:pointer}.teacher-record-list{display:grid;gap:9px;margin-top:12px}.teacher-record{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;align-items:center;gap:12px;width:100%;min-height:62px;padding:12px 14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);text-align:left;cursor:pointer}.teacher-record:hover{border-color:var(--thu-purple-line);background:#fbf8fd}.teacher-record p{margin:6px 0 0;color:var(--thu-muted);font-size:13px;line-height:1.45}.teacher-record--static{cursor:default}.teacher-record--static:hover{border-color:var(--thu-border);background:#fff}.teacher-record--reviewed{border-color:#d9eadf;background:#fbfffc}.teacher-record--quiet{background:#fcfcfd}.conversation-history-record{grid-template-columns:minmax(0,1fr) auto;cursor:default}.conversation-history-record:hover{border-color:var(--thu-border);background:#fff}.teacher-record__actions{display:inline-flex;align-items:center;gap:8px;justify-self:end}.teacher-record__actions button{min-height:36px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer;white-space:nowrap}.teacher-record__actions button:first-child{border-color:var(--thu-purple);background:var(--thu-purple);color:#fff}.teacher-record__actions button:hover{border-color:var(--thu-purple);background:#fbf8fd}.teacher-record__actions button:first-child:hover{background:var(--thu-purple-dark);color:#fff}.teacher-overview-list{display:grid;gap:9px;margin-top:12px}.teacher-overview-row{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto auto;align-items:center;gap:12px;width:100%;min-height:66px;padding:13px 16px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);text-align:left;cursor:pointer}.teacher-overview-row:hover{border-color:var(--thu-purple-line);background:#fbf8fd}.teacher-overview-row strong,.teacher-overview-row span{display:block}.teacher-overview-row strong{font-size:15px}.teacher-overview-row span{color:var(--thu-muted);white-space:nowrap}.permission-note{margin:0;padding:12px 14px;border-left:4px solid var(--thu-purple-line);background:var(--thu-purple-soft);color:var(--thu-muted);line-height:1.55}.teacher-material-text{margin:10px 0 0;padding:14px 16px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);font-size:16px;line-height:1.75;white-space:pre-wrap}.teacher-reference-preview{display:grid;gap:16px}.teacher-reference-preview__header{display:flex;align-items:flex-start;justify-content:space-between;gap:20px}.teacher-reference-preview__header p{max-width:620px;margin:6px 0 0;color:var(--thu-muted);font-size:14px;line-height:1.55}.teacher-reference-preview__summary{display:grid;justify-items:end;gap:8px}.teacher-reference-preview__summary-status{display:block;padding:7px 10px;border:1px solid var(--thu-border);border-radius:8px;background:#f7f5f8;color:var(--thu-muted);font-size:13px;line-height:1.4;text-align:right}.teacher-reference-preview__summary-status--ready{border-color:#b9ddc9;background:#eef8f3;color:var(--accent-green)}.teacher-reference-preview__summary-status--failed,.teacher-reference-preview__summary-status--missing{border-color:#eccaca;background:#fff5f5;color:var(--accent-red)}.teacher-reference-preview__summary button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:36px;padding:0 11px;border:1px solid var(--thu-purple);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-size:13px;font-weight:700;cursor:pointer;white-space:nowrap}.teacher-reference-preview__pages{display:grid;grid-template-columns:repeat(auto-fit,minmax(128px,1fr));gap:9px}.teacher-reference-page{display:grid;grid-template-columns:1fr auto;align-items:center;gap:5px 8px;min-height:76px;padding:11px 12px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit;text-align:left;cursor:pointer}.teacher-reference-page:hover{border-color:var(--thu-purple-line);background:#fbf8fd}.teacher-reference-page:focus-visible,.teacher-reference-preview__summary button:focus-visible,.teacher-reference-preview__play:focus-visible{outline:3px solid var(--thu-purple-line);outline-offset:2px}.teacher-reference-page:active,.teacher-reference-preview__summary button:active,.teacher-reference-preview__play:active{transform:translateY(1px)}.teacher-reference-page--active{border-color:var(--thu-purple);box-shadow:inset 0 0 0 1px var(--thu-purple)}.teacher-reference-page span{font-weight:800}.teacher-reference-page small{color:var(--thu-muted);font-size:12px;text-align:right}.teacher-reference-page__status{grid-column:1 / -1;width:fit-content;color:var(--thu-muted);font-size:12px;font-style:normal}.teacher-reference-page__status--cached{color:var(--accent-green)}.teacher-reference-page__status--missing{color:var(--accent-red)}.teacher-reference-page__status--generating{color:var(--thu-purple)}.teacher-reference-preview__selection{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px;padding:14px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fbf8fd}.teacher-reference-preview__selection>div>span,.teacher-reference-preview__selection strong{display:block}.teacher-reference-preview__selection>div>span{color:var(--thu-muted);font-size:12px}.teacher-reference-preview__selection strong{margin-top:3px;color:var(--thu-purple-dark);font-size:16px}.teacher-reference-preview__selection p{max-height:160px;overflow:auto;margin:9px 0 0;color:var(--thu-ink);font-size:15px;line-height:1.65;white-space:pre-wrap}.teacher-reference-preview__play{display:grid;grid-template-columns:auto auto;align-items:center;justify-content:center;gap:2px 8px;min-width:150px;min-height:58px;padding:8px 14px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;font:inherit;font-weight:800;cursor:pointer}.teacher-reference-preview__play svg{grid-row:1 / 3}.teacher-reference-preview__play small{color:#f0e8f5;font-size:11px;font-weight:600}.teacher-reference-preview__play:disabled{border-color:#cfc6d4;background:#ded8e2;color:#514957;cursor:default}.teacher-reference-preview__play:disabled small{color:#514957}.teacher-reference-preview__actions{display:grid;gap:8px}.teacher-reference-preview__regenerate{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:36px;padding:6px 10px;border:1px solid var(--thu-purple-line);border-radius:7px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-size:12px;font-weight:750}.speech-normalization-panel{display:grid;gap:11px;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.speech-normalization-panel__header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.speech-normalization-panel__header span,.speech-normalization-panel__header strong{display:block}.speech-normalization-panel__header span,.speech-normalization-panel__header small,.speech-normalization-panel__override small{color:var(--thu-muted);font-size:12px}.speech-normalization-panel__header strong{margin-top:2px;color:var(--thu-purple-dark)}.speech-normalization-panel__spoken{margin:0;padding:12px 13px;border-left:4px solid var(--thu-purple);background:#f8f5fa;color:var(--thu-ink);line-height:1.65;white-space:pre-wrap}.speech-normalization-panel__ok{margin:0;color:var(--accent-green);font-size:13px}.speech-normalization-panel__issues{display:grid;gap:7px}.speech-normalization-panel__issues p{display:grid;grid-template-columns:minmax(90px,auto) 1fr;gap:10px;margin:0;padding:9px 11px;border:1px solid #e8caca;border-radius:7px;background:#fff7f7;color:var(--accent-red);font-size:13px;line-height:1.45}.speech-normalization-panel__override{display:grid;gap:8px;padding-top:12px;border-top:1px solid var(--thu-border)}.speech-normalization-panel__override label{color:var(--thu-ink);font-size:14px;font-weight:800}.speech-normalization-panel__override label span{display:block;margin-top:2px;color:var(--thu-muted);font-size:12px;font-weight:400}.speech-normalization-panel__override textarea{width:100%;min-height:108px;resize:vertical;padding:11px 12px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit;line-height:1.55}.speech-normalization-panel__override textarea:focus{border-color:var(--thu-purple);outline:3px solid var(--thu-purple-soft)}.speech-normalization-panel__override-actions{display:flex;justify-content:flex-end;gap:8px}.speech-normalization-panel__override button,.speech-normalization-panel__override-entry button{min-height:36px;padding:0 12px;border:1px solid var(--thu-purple);border-radius:8px;background:#fff;color:var(--thu-purple-dark);font:inherit;font-size:13px;font-weight:700;cursor:pointer}.speech-normalization-panel__override button:last-child,.speech-normalization-panel__override-entry button:last-child{background:var(--thu-purple);color:#fff}.speech-normalization-panel__override button:disabled,.speech-normalization-panel__override-entry button:disabled{border-color:var(--thu-border);background:#f3f1f4;color:#9b929f;cursor:default}.speech-normalization-panel__override-entry{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:12px;border-top:1px solid var(--thu-border)}.speech-normalization-panel__override-entry strong,.speech-normalization-panel__override-entry span{display:block}.speech-normalization-panel__override-entry strong{color:var(--thu-ink);font-size:13px}.speech-normalization-panel__override-entry span{margin-top:2px;color:var(--thu-muted);font-size:12px;line-height:1.45}.speech-normalization-panel__override-entry-actions{display:flex;flex:0 0 auto;gap:8px}.teacher-reference-preview__message{margin:-4px 0 0;color:var(--accent-red);font-size:13px}@media(max-width:560px){.teacher-reference-preview__header,.teacher-reference-preview__selection{grid-template-columns:1fr;align-items:stretch}.teacher-reference-preview__header{flex-direction:column}.teacher-reference-preview__summary{width:100%;justify-items:stretch}.teacher-reference-preview__summary-status{text-align:left}.teacher-reference-preview__summary button,.teacher-reference-preview__play{width:100%}.teacher-reference-preview__pages{grid-template-columns:repeat(2,minmax(0,1fr))}.speech-normalization-panel__header,.speech-normalization-panel__override-actions,.speech-normalization-panel__override-entry,.speech-normalization-panel__override-entry-actions{flex-direction:column;align-items:stretch}.speech-normalization-panel__issues p{grid-template-columns:1fr}}.qa-view{display:grid;gap:22px;margin-top:22px}.qa-hero,.qa-answer-panel,.qa-feedback{padding:18px 20px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;box-shadow:0 10px 22px #45205b0f}.qa-hero{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;background:#fbfafc}.qa-hero h2,.qa-answer-panel h3,.qa-transcript h3{margin:0;color:var(--thu-ink)}.qa-hero p,.qa-answer-panel p,.qa-feedback p,.qa-transcript p{margin:8px 0 0;color:var(--thu-muted);line-height:1.6}.qa-score-explanation{display:grid;gap:10px;margin:16px 0;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.qa-score-explanation h3,.qa-score-explanation p{margin:0}.qa-score-explanation>div{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.qa-score-explanation span{display:grid;gap:4px;padding:10px;border:1px solid #ece3f2;border-radius:8px;background:#fff;color:var(--thu-muted);font-size:13px;line-height:1.55}.qa-score-explanation strong{color:var(--thu-purple-dark)}.qa-hero>span{padding:7px 10px;border:1px solid var(--thu-purple-line);border-radius:999px;color:var(--thu-purple-dark);white-space:nowrap}.qa-prompt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.qa-prompt-grid--compact,.qa-prompt-grid--list{grid-template-columns:1fr}.qa-prompt-card{display:grid;grid-template-columns:minmax(220px,.8fr) minmax(0,1.5fr) auto;gap:8px;align-items:center;min-height:0;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);text-align:left}.qa-prompt-card:hover,.qa-prompt-card--active{border-color:var(--thu-purple);background:var(--thu-purple-soft)}.qa-prompt-card span,.qa-prompt-card small{color:var(--thu-muted);line-height:1.45}.qa-prompt-card strong{font-size:16px;line-height:1.45}.qa-prompt-card>span,.qa-prompt-card>strong{grid-column:1}.qa-prompt-card>small{grid-column:2;grid-row:1 / span 2;align-self:center;font-size:16px}.qa-prompt-grid--list .qa-prompt-card{grid-template-columns:minmax(320px,.85fr) minmax(0,1fr)}.qa-prompt-card>.conversation-topic-card__goals{grid-column:2}.qa-prompt-card>.conversation-topic-actions{grid-column:3;grid-row:1 / span 3;align-self:center;justify-self:end}.conversation-topic-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}.conversation-topic-actions button{min-height:34px;padding:0 12px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer}.conversation-topic-actions button:hover{background:var(--thu-purple-dark)}.qa-answer-panel{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px}.qa-controls{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.qa-controls button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:0 12px;border:1px solid var(--thu-purple);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.qa-controls button:last-child{background:var(--thu-purple);color:#fff}.qa-controls button:disabled{border-color:var(--thu-border);color:#a49ca8;background:#f8f7f9;cursor:default}.acceptance-fault-toggle{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border:1px dashed #c79d48;border-radius:8px;background:#fffaf0;color:#5f4314;cursor:pointer}.acceptance-fault-toggle input{width:18px;height:18px;margin:2px 0 0;accent-color:var(--thu-purple)}.acceptance-fault-toggle span{display:grid;gap:3px}.acceptance-fault-toggle strong,.acceptance-fault-toggle small{line-height:1.45}.acceptance-fault-toggle small{color:#7a643b}.qa-feedback{display:grid;gap:14px}.teacher-feedback-highlight{display:grid;gap:8px;margin:2px 0;padding:14px 16px;border:1px solid var(--thu-purple-line);border-left:5px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple-soft)}.teacher-feedback-highlight__heading{display:flex;align-items:center;gap:8px;color:var(--thu-purple-dark)}.teacher-feedback-highlight p,.teacher-feedback-highlight small{margin:0}.teacher-feedback-highlight p{color:var(--thu-ink);font-size:17px;font-weight:650;line-height:1.65}.teacher-feedback-highlight small{color:var(--thu-muted);font-size:12px}.qa-score{display:flex;align-items:center;gap:14px}.qa-score strong{color:var(--thu-purple);font-size:40px;line-height:1}.qa-score span,.qa-transcript span{color:var(--thu-muted)}.qa-score__context{display:grid;gap:3px}.qa-score__context b{color:var(--thu-ink);font-size:16px}.qa-score__context small{color:var(--thu-muted);font-size:12px}.qa-requirement-evidence{display:grid;gap:10px;padding:14px 16px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.qa-requirement-evidence>div{display:flex;align-items:baseline;justify-content:space-between;gap:12px}.qa-requirement-evidence h3,.qa-requirement-evidence small{margin:0}.qa-requirement-evidence h3{color:var(--thu-ink)}.qa-requirement-evidence small{color:var(--thu-muted)}.qa-requirement-evidence ul{display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none}.qa-requirement-evidence li{padding:7px 10px;border:1px solid;border-radius:999px;font-size:13px;line-height:1.35}.qa-requirement-evidence__fulfilled{border-color:#a6d8bd;background:#f0faf4;color:#17633c}.qa-requirement-evidence__missing{border-color:#e2c687;background:#fffaf0;color:#795315}.qa-requirement-evidence__warning{border-color:#d7b3b3;background:#fff6f5;color:#8f2f2f}@media(max-width:720px){.qa-requirement-evidence>div{align-items:flex-start;flex-direction:column}}.qa-transcript{padding:12px 14px;border-left:4px solid var(--thu-purple-line);background:#fbfafc}.conversation-goals{display:grid;gap:8px;margin-top:14px}.conversation-goals>span{display:block;color:var(--thu-purple-dark);font-size:14px;font-weight:700}.conversation-topic-panel,.conversation-chat,.conversation-history-panel{padding:18px 20px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.conversation-topic-panel h3,.conversation-chat h3,.conversation-history-panel h3{margin:0 0 12px;color:var(--thu-purple-dark)}.conversation-topic-panel--wide,.conversation-history-panel{display:grid;gap:12px}.conversation-suggest-panel{background:#fbfafc}.conversation-suggest-panel .conversation-suggestions{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.conversation-custom-topic-panel{border-color:var(--thu-purple-line);background:#fff}.conversation-custom-topic-panel .section-eyebrow{font-size:18px}.conversation-custom-topic-panel p{margin:0;color:var(--thu-muted);line-height:1.55}.conversation-rounds{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;color:var(--thu-muted)}.conversation-rounds>small{flex-basis:100%;line-height:1.5;color:var(--thu-purple-dark)}.conversation-rounds>div{display:inline-flex;overflow:hidden;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff}.conversation-rounds button{min-height:34px;padding:0 12px;border:0;border-right:1px solid var(--thu-purple-line);background:transparent;color:var(--thu-purple-dark);cursor:pointer}.conversation-rounds button:last-child{border-right:0}.conversation-rounds button:disabled{cursor:not-allowed;opacity:.62}.conversation-rounds__button--active{background:var(--thu-purple)!important;color:#fff!important}.conversation-suggest{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px}.conversation-suggest input{width:100%;border:1px solid var(--thu-border);border-radius:8px;color:var(--thu-ink);font:inherit}.conversation-suggest input{min-height:40px;padding:0 12px}.conversation-suggest button{min-height:40px;padding:0 16px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer}.conversation-suggest button:disabled{border-color:var(--thu-border);background:#f3f1f5;color:#9d93a4;cursor:default}.conversation-generation-status{margin:0;color:var(--thu-muted);line-height:1.55}.conversation-generation-result{display:grid;grid-template-columns:max-content minmax(0,1fr);align-items:center;gap:10px;padding:11px 13px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#f7f2fa;color:var(--thu-ink);line-height:1.5}.conversation-generation-result strong{color:var(--thu-purple-dark)}.conversation-generation-result--scenario_fallback{border-color:#dfbd75;background:#fff8e8}.conversation-generation-result--scenario_fallback strong{color:#76510b}.conversation-generation-result--unavailable{border-color:#e8b7b7;background:#fff4f4}.conversation-generation-result--unavailable strong{color:#9b2f2f}.conversation-suggestions{margin-top:12px}.conversation-suggestions button{display:grid;gap:8px;align-content:start;min-height:100%;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);text-align:left;cursor:pointer}.conversation-suggestions button:hover{border-color:var(--thu-purple-line);background:#fbf8fd}.conversation-suggestions strong,.conversation-custom-topic-card strong{font-size:16px;line-height:1.35}.conversation-custom-topic-card strong{font-size:20px}.conversation-suggestions span,.conversation-custom-topic-card span{color:var(--thu-muted);line-height:1.45}.conversation-suggestion-card__mark{justify-self:start;padding:3px 9px;border:1px solid var(--thu-purple-line);border-radius:999px;color:var(--thu-purple-dark)!important;font-size:13px;font-weight:700}.conversation-suggestion-card--active{border-color:var(--thu-purple)!important;background:#f7f1fb!important}.conversation-suggest-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.conversation-suggest-actions button{min-height:38px;padding:0 16px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer}.conversation-suggest-actions button:disabled{border-color:var(--thu-border);background:#f3f1f5;color:#9d93a4;cursor:default}.conversation-suggest-actions span{color:var(--thu-muted);font-size:14px}.conversation-custom-topic-grid{display:grid;grid-template-columns:1fr;gap:12px}.conversation-custom-topic-card{display:grid;grid-template-columns:minmax(220px,.8fr) minmax(0,1.5fr) auto;gap:8px;align-items:center;min-height:0;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-ink);text-align:left}.conversation-custom-topic-card>strong,.conversation-custom-topic-card>span:first-of-type{grid-column:1}.conversation-custom-topic-card>span:nth-of-type(2){grid-column:2;grid-row:1 / span 2;align-self:center;font-size:16px}.conversation-custom-topic-card>.conversation-topic-card__goals{grid-column:2}.conversation-custom-topic-card>.conversation-custom-topic-actions{grid-column:3;grid-row:1 / span 3;align-self:center;justify-self:end}.conversation-custom-topic-card:hover,.conversation-custom-topic-card--active{border-color:var(--thu-purple);background:var(--thu-purple-soft)}.conversation-custom-topic-actions{display:flex;flex-wrap:wrap;gap:8px;margin-top:4px}.conversation-custom-topic-actions button{min-height:34px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.conversation-custom-topic-actions button:first-child{border-color:var(--thu-purple);background:var(--thu-purple);color:#fff}.conversation-custom-topic-actions button:hover{border-color:var(--thu-purple);background:#fbf8fd}.conversation-custom-topic-actions button:first-child:hover{background:var(--thu-purple-dark);color:#fff}.conversation-chat{display:grid;gap:12px}.conversation-chat--review{margin-top:0}.conversation-chat--review .conversation-messages{max-height:520px}.conversation-chat__header{display:flex;align-items:center;justify-content:space-between;gap:12px}.conversation-chat__header p{margin:6px 0 0;color:var(--thu-ink);font-size:20px;font-weight:800;line-height:1.35}.conversation-chat__header small{display:block;margin-top:6px;color:var(--thu-muted);font-size:15px;line-height:1.5}.conversation-chat__header span{flex:0 0 auto;min-width:max-content;color:var(--thu-muted);text-align:right;white-space:nowrap}.conversation-voice-panel{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:16px;padding:16px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fbfafc}.conversation-orb{display:grid;place-items:center;width:78px;height:78px;border-radius:50%;background:var(--thu-purple);color:#fff;box-shadow:0 10px 24px #56286f38}.conversation-orb--recording{background:#b72b4a;animation:pulse-recording 1.2s ease-in-out infinite}@keyframes pulse-recording{0%{box-shadow:0 0 #b72b4a38}70%{box-shadow:0 0 0 14px #b72b4a00}to{box-shadow:0 0 #b72b4a00}}.conversation-voice-panel strong{display:block;color:var(--thu-ink);font-size:18px}.conversation-voice-panel p{margin:6px 0 0;color:var(--thu-muted);line-height:1.55}.conversation-voice-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.conversation-voice-actions button,.conversation-message__audio{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.conversation-voice-actions button:first-child{border-color:var(--thu-purple);background:var(--thu-purple);color:#fff}.conversation-voice-actions button:disabled,.conversation-message__audio:disabled,.conversation-turn-card button:disabled{border-color:var(--thu-border);background:#f8f7f9;color:#a49ca8;cursor:default}.conversation-retry-note{display:grid;gap:4px;padding:10px 12px;border:1px solid #ecc7cf;border-radius:8px;background:#fff7f8;color:#7c2437}.conversation-retry-note span{color:#735d64;line-height:1.5}.conversation-messages{display:grid;gap:10px;max-height:420px;overflow:auto;padding:12px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.conversation-message{width:min(78%,720px);padding:10px 12px;border-radius:8px;background:#fff;border:1px solid var(--thu-border)}.conversation-message--student{justify-self:end;border-color:var(--thu-purple-line);background:var(--thu-purple-soft)}.conversation-message strong,.conversation-message small{display:block}.conversation-message strong{color:var(--thu-purple-dark)}.conversation-message p{margin:5px 0 0;color:var(--thu-ink);line-height:1.55}.conversation-message small{margin-top:5px;color:var(--thu-muted);line-height:1.45}.conversation-message__audio{min-height:30px;margin-top:8px;padding:0 10px;font-size:13px}.conversation-summary{display:grid;gap:14px;padding:18px 20px;border-left:4px solid var(--thu-purple-line);background:var(--thu-purple-soft)}.conversation-summary h4{margin:0;color:var(--thu-purple-dark)}.conversation-summary p,.conversation-summary span{display:block;margin:6px 0 0;color:var(--thu-muted);line-height:1.55}.conversation-summary__section{padding-top:12px;border-top:1px solid rgba(92,39,122,.13)}.conversation-summary__section:first-of-type{padding-top:0;border-top:0}.conversation-summary__section h5{margin:0 0 7px;color:var(--thu-purple-dark);font-size:15px}.conversation-summary__section p{margin:0}.conversation-summary__section ul{display:grid;gap:7px;margin:0;padding-left:21px;color:var(--thu-muted);line-height:1.58}.conversation-summary__section--improvement{padding:12px 14px;border:1px solid rgba(183,125,22,.22);border-radius:10px;background:#fffaf0b8}.conversation-summary__section--phrases li{color:var(--thu-text);font-family:Georgia,Times New Roman,serif}.conversation-summary--teacher{margin-top:10px}.conversation-evidence-note{margin:0;padding:10px 12px;border-left:3px solid #d2a23c;background:#fffaf0;color:#6f531c;font-size:14px;line-height:1.55}.conversation-evidence-note--compact{margin-top:0!important;color:#6f531c!important}.conversation-turn-list{display:grid;gap:12px;margin-top:12px}.conversation-turn-card{display:grid;gap:12px;padding:14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.conversation-turn-card__header{display:flex;justify-content:space-between;gap:12px;color:var(--thu-purple-dark)}.conversation-turn-card__grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.conversation-turn-card__grid>div{padding:12px;border:1px solid var(--thu-border);border-radius:8px;background:#fbfafc}.conversation-turn-card h4,.conversation-turn-card p{margin:0}.conversation-turn-card p{margin-top:6px;color:var(--thu-ink);line-height:1.6}.conversation-turn-card button{display:inline-flex;align-items:center;gap:7px;min-height:32px;margin-top:10px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.conversation-turn-card__feedback{display:flex;flex-wrap:wrap;gap:8px}.conversation-turn-card__feedback span{padding:6px 9px;border-radius:999px;background:var(--thu-purple-soft);color:var(--thu-purple-dark);line-height:1.4}.teacher-record strong,.teacher-record span{display:block}.teacher-record strong{font-size:15px}.teacher-record>span{white-space:nowrap}.edit-lesson-view textarea{width:100%;min-height:420px;margin-top:16px;resize:vertical;padding:14px 16px;border:1px solid var(--thu-border);border-radius:8px;color:var(--thu-ink);font:inherit;line-height:1.65}.edit-lesson-view__actions{display:flex;justify-content:flex-end;gap:10px;margin-top:14px}.edit-lesson-view__actions button{min-height:40px;padding:0 16px;border:1px solid var(--thu-purple);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.edit-lesson-view__actions button:last-child{background:var(--thu-purple);color:#fff}.edit-lesson-view__actions button:disabled{border-color:var(--thu-border);background:#f6f1f8;color:#a99caf;cursor:default}.lesson-panel__current{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:12px;margin-bottom:12px}.lesson-panel__current span{color:var(--thu-muted);font-size:14px}.lesson-panel__current strong{color:var(--thu-ink);font-size:18px}.lesson-panel__identity{margin:-4px 0 12px;color:var(--thu-purple-dark);font-size:13px}.lesson-panel--review{border-color:var(--thu-purple-line);background:#fcfafd}.lesson-panel__review-note{margin:-3px 0 0;padding-top:10px;border-top:1px solid var(--thu-border);color:var(--thu-muted);font-size:13px;line-height:1.55}.lesson-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px}.custom-lesson-tools{display:grid;grid-template-columns:minmax(0,1fr) auto auto auto;gap:8px;margin:0 0 12px}.custom-lesson-tools input{min-height:36px;padding:0 10px;border:1px solid var(--thu-border);border-radius:8px;color:var(--thu-ink);font:inherit}.rename-lesson-button,.delete-lesson-button,.edit-lesson-button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:34px;padding:0 10px;border-radius:8px;cursor:pointer}.rename-lesson-button{border:1px solid var(--thu-purple);background:#fff;color:var(--thu-purple-dark)}.edit-lesson-button{border:1px solid var(--thu-purple-line);background:var(--thu-purple-soft);color:var(--thu-purple-dark)}.delete-lesson-button{border:1px solid #e0c4c4;background:#fff8f8;color:#9f3e3e}.rename-lesson-button:disabled,.delete-lesson-button:disabled{color:#b9a4a4;cursor:default}.difficulty-control{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 12px;color:var(--thu-muted);font-size:14px}.difficulty-control>div{display:inline-flex;overflow:hidden;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.difficulty-control button{min-height:32px;padding:0 10px;border:0;border-right:1px solid var(--thu-border);background:transparent;color:#5d5365;cursor:pointer}.difficulty-control button:last-child{border-right:0}.difficulty-control__button--active{background:var(--thu-purple)!important;color:#fff!important}.custom-lesson-editor{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px;margin:0 0 12px}.custom-lesson-editor textarea{width:100%;min-height:82px;resize:vertical;padding:10px 12px;border:1px solid var(--thu-border);border-radius:8px;color:var(--thu-ink);font:inherit;line-height:1.5}.custom-lesson-editor button{min-width:100px;border:1px solid var(--thu-purple);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.custom-lesson-editor button:disabled{color:#a99caf;cursor:default}.lesson-chip{flex:0 0 auto;min-height:36px;padding:0 12px;border:1px solid var(--thu-border);border-radius:999px;background:#fff;color:#5c5365;cursor:pointer;white-space:nowrap}.lesson-chip--active{border-color:var(--thu-purple);background:var(--thu-purple-soft);color:var(--thu-purple-dark)}.custom-input{display:grid;grid-template-columns:1fr auto;gap:10px;margin-top:10px}.custom-input input{grid-column:1 / -1;min-height:42px;padding:0 12px;border:1px solid var(--thu-border);border-radius:8px;color:var(--thu-ink);font:inherit}.custom-textarea{position:relative;min-width:0}.custom-input textarea{width:100%;height:100%;min-height:72px;resize:vertical;padding:10px 12px 34px;border:1px solid var(--thu-border);border-radius:8px;color:var(--thu-ink);font:inherit;line-height:1.5}.custom-textarea__count{position:absolute;right:10px;bottom:8px;padding:2px 6px;border-radius:6px;background:#ffffffe6;color:#7a8588;font-size:13px;line-height:1.4;pointer-events:none}.custom-textarea__count--paged{color:var(--thu-purple)}.custom-input button{align-self:stretch;min-width:132px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer}.learning-overview{display:grid;gap:16px;margin:22px 0 28px;padding:18px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;box-shadow:0 10px 24px #45205b14}.learning-overview__main{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.section-eyebrow{display:block;margin-bottom:6px;color:var(--thu-purple);font-size:13px;font-weight:700}.learning-overview .section-eyebrow,.teacher-dashboard__hero .section-eyebrow,.teacher-create-panel .section-eyebrow{font-size:18px;line-height:1.25}.learning-overview h2{margin:0;color:var(--thu-ink);font-size:22px}.learning-overview p{margin:8px 0 0;color:var(--thu-muted);line-height:1.6}.mastery-rule{margin:-4px 0 0!important;padding:10px 12px;border:1px dashed var(--thu-purple-line);border-radius:8px;background:#fdfbff;font-size:14px}.mastery-rule span{display:block;margin-top:4px}.tts-preload{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:14px 0 24px;padding:12px 14px;border:1px solid var(--thu-purple-line);border-radius:8px;background:var(--thu-purple-soft);color:var(--thu-purple-dark);font-size:14px}.tts-preload button{flex:0 0 auto;min-height:34px;padding:0 12px}.track-badge{display:inline-flex;align-items:center;gap:7px;min-height:34px;padding:0 10px;border-radius:999px;background:#f4f1f7;color:var(--thu-purple-dark);white-space:nowrap}.track-badge--mastered{background:#eef8f3;color:var(--accent-green)}.track-badge--review{background:#fff6f6;color:var(--accent-red)}.track-badge--pending_review{background:#fff8e8;color:#75500e}.track-badge--unstarted{background:#f3f1f5;color:#756d7c}.learning-overview__stats{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.learning-overview__stats div{min-height:72px;padding:12px;border:1px solid #eee8f2;border-radius:8px;background:#fbf9fc}.learning-overview__stats span{display:block;color:var(--thu-muted);font-size:13px}.learning-overview__stats strong{display:block;margin-top:6px;color:var(--thu-purple-dark);font-size:24px}.next-step-card{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;padding:14px;border:1px solid var(--thu-purple-line);border-radius:8px;background:var(--thu-purple-soft)}.next-step-card svg{color:var(--thu-purple)}.next-step-card span{display:block;color:var(--thu-muted);font-size:13px}.next-step-card strong{display:block;margin-top:3px;color:var(--thu-purple-dark);font-size:18px}.next-step-card p{margin:4px 0 0}.next-step-card button{min-height:38px;padding:0 14px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer}.score-card{overflow:hidden;margin:40px 0 34px;border-radius:8px;background:#fff;box-shadow:0 12px 30px #45205b1c}.part-overview{margin:22px 0 30px;padding:16px;border:1px solid var(--thu-border);border-radius:8px;background:#fdfcff}.part-overview__header{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:12px}.part-overview h2{margin:0;font-size:18px}.part-overview__header span{color:var(--thu-muted);font-size:14px}.part-overview__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}.part-card{position:relative;display:grid;gap:4px;width:100%;min-height:104px;padding:12px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:#655d6c;text-align:left;cursor:pointer}.part-card:hover{border-color:var(--thu-purple-line);background:#fbf8fd}.part-card strong{color:var(--thu-ink)}.part-card span{font-size:14px}.part-card__status{display:inline-flex;align-items:center;justify-content:center;width:fit-content;min-height:22px;padding:0 7px;border-radius:999px;background:#f3f1f5;color:#766e7c}.part-card--mastered .part-card__status{background:#edf8f2;color:var(--accent-green)}.part-card--review .part-card__status{background:#fff3f3;color:var(--accent-red)}.part-card--improving .part-card__status{background:#f7f1fb;color:var(--thu-purple)}.part-card--active{border-color:var(--thu-purple);background:var(--thu-purple-soft);cursor:default}.part-card small{color:#766e7c;font-size:13px}.part-card__trend--up{color:var(--accent-green)!important}.part-card__trend--down{color:var(--accent-red)!important}.microphone-check{display:grid;grid-template-columns:minmax(0,1fr) minmax(120px,220px) auto;align-items:center;gap:16px;margin:0 0 24px;padding:15px 16px;border:1px solid var(--thu-border);border-radius:10px;background:#fff}.microphone-check__identity{display:flex;align-items:center;gap:12px;min-width:0}.microphone-check__icon{display:inline-flex;flex:0 0 auto;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;background:var(--thu-purple-soft);color:var(--thu-purple)}.microphone-check h2{margin:0;color:var(--thu-ink);font-size:17px}.microphone-check p{margin:4px 0 0;color:var(--thu-muted);font-size:13px;line-height:1.5}.microphone-check__meter{overflow:hidden;height:10px;border-radius:999px;background:#ece8ef}.microphone-check__meter span{display:block;width:0;height:100%;border-radius:inherit;background:var(--thu-purple);transition:width .12s ease-out,background .16s ease-out}.microphone-check--good .microphone-check__meter span{background:var(--accent-green)}.microphone-check--quiet .microphone-check__meter span,.microphone-check--error .microphone-check__meter span{background:var(--accent-gold)}.microphone-check>button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:0 14px;border:1px solid var(--thu-purple);border-radius:8px;background:#fff;color:var(--thu-purple);white-space:nowrap;cursor:pointer}.microphone-check>button:disabled{border-color:var(--thu-border);color:#9da3a7;cursor:default}.microphone-check__recording-status{grid-column:1 / -1;margin:-4px 0 0!important;padding:9px 11px;border-radius:7px;background:#f7f3f9}.microphone-check__recording-status--ready{background:#edf8f2;color:var(--accent-green)!important}.microphone-check__recording-status--invalid{background:#fff3f3;color:var(--accent-red)!important}.microphone-check__recording-status--checking,.microphone-check__recording-status--unavailable{background:#fff9eb;color:#76520c!important}.score-card__top,.score-card__bottom{display:grid;grid-template-columns:repeat(4,1fr);align-items:center;min-height:66px;text-align:center}.score-card__top{background:var(--thu-purple-soft);color:#7b6687}.score-card__top strong{color:var(--thu-purple-dark);font-size:17px}.score-card__body{display:grid;grid-template-columns:1fr 1fr;min-height:150px;align-items:center;text-align:center}.score-card__body>div:first-child{border-right:1px solid #eef1f2}.main-score{display:block;color:var(--thu-purple);font-size:36px;line-height:1.1}.score-card__body span{display:block;margin-top:14px;color:#9b9b9b}.playback{display:inline-flex;flex-direction:column;align-items:center;gap:12px;background:transparent;color:var(--thu-purple)}.playback:disabled{color:#9da8aa;cursor:default}.score-card__bottom{border-top:1px solid #eef1f2;color:#8f9395;font-size:15px}.reading__header{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.reading h2{margin:0 0 18px;color:#4f5356;font-size:22px;font-weight:600}.reading__header h2{margin-bottom:0}.page-controls{display:inline-flex;align-items:center;gap:8px;color:#637174;font-size:14px;white-space:nowrap}.page-controls button{min-height:32px;padding:0 10px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.page-controls button:disabled{color:#a8b1b4;cursor:default}.reading p{margin:0;color:#676b70;font-size:34px;line-height:1.9}.word{display:inline-block;margin:0 10px 8px 0;border-bottom:3px solid transparent;text-decoration:none}.word--good{border-color:#5f2b7a42}.word--needs_work{color:var(--accent-red);border-color:#d36c6c;background:#fff5f5}.word--uncertain{color:#76520c;border-color:var(--accent-gold);border-bottom-style:dashed;background:#fff9eb}.word--pause_after{color:#936c1f;border-color:transparent;background:#fff9eb;text-decoration-line:underline;text-decoration-style:wavy;text-decoration-color:var(--accent-gold);text-decoration-thickness:2px;text-underline-offset:.22em}.feedback{margin-top:34px;padding:22px 0 0;border-top:1px solid var(--thu-border)}.analysis-state{display:flex;align-items:flex-start;gap:12px;margin:0 0 20px;padding:14px 16px;border:1px solid #d9c9e2;border-radius:12px;background:#faf7fc;color:var(--thu-purple-dark)}.analysis-state strong{display:block;margin-bottom:4px}.analysis-state p{margin:0;color:var(--thu-muted);line-height:1.55}.analysis-state--degraded{border-color:#ead6a5;background:#fffaf0;color:#76510f}.analysis-state__pulse{flex:0 0 auto;width:10px;height:10px;margin-top:6px;border-radius:50%;background:var(--thu-purple);box-shadow:0 0 #662d9159;animation:analysis-pulse 1.8s ease-out infinite}@keyframes analysis-pulse{70%{box-shadow:0 0 0 8px #662d9100}to{box-shadow:0 0 #662d9100}}@media(prefers-reduced-motion:reduce){.analysis-state__pulse{animation:none}}.feedback h2{margin:0 0 10px;font-size:20px}.feedback__header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px}.feedback__header p{margin-top:0}.feedback-basis{display:block;margin-top:6px;color:var(--thu-muted);font-size:13px}.feedback-enrichment-status{display:block;max-width:780px;margin-top:8px;padding:8px 10px;border-left:3px solid #b77a16;background:#fff8e9;color:#75500e;font-size:13px;line-height:1.55}.asr-uncertainty-note{margin:12px 0;padding:11px 12px;border-left:3px solid var(--accent-gold);background:#fff9eb;color:#684f17}.asr-uncertainty-note>strong{color:#5c4310}.asr-uncertainty-note p{margin:4px 0 8px;line-height:1.55}.asr-uncertainty-note>div{display:flex;flex-wrap:wrap;gap:7px}.asr-uncertainty-note span{padding:3px 8px;border:1px solid #d9bc73;border-radius:999px;background:#fff;font-size:13px;font-weight:800}.teacher-edit-button{flex:0 0 auto;min-height:36px;padding:0 12px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;cursor:pointer;white-space:nowrap}.teacher-edit-button--light{border-color:var(--thu-purple-line);background:#fff;color:var(--thu-purple-dark)}.teacher-edit-button:disabled{opacity:.62;cursor:default}.feedback h3{margin:16px 0 8px;font-size:16px}.feedback p{margin:8px 0;color:#62686d;line-height:1.7}.feedback-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.metric-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:18px 0}.metric-strip span{min-height:42px;padding:10px;border-radius:8px;background:#f7f4f9;color:#514759;text-align:center}.sentence-feedback,.practice-words{margin-top:18px}.feedback-sections{display:grid;gap:14px;margin:20px 0 22px}.feedback-panel{padding:14px 16px;border-left:4px solid var(--thu-purple-line);border-radius:0 8px 8px 0;background:#fbf9fc}.feedback-panel--asr{border-left-color:#d36c6c;background:#fff8f8}.feedback-panel--rhythm{border-left-color:var(--accent-gold);background:#fffaf0}.feedback-panel--practice{border-left-color:var(--thu-purple);background:var(--thu-purple-soft)}.feedback-panel--progress{border-left-color:var(--thu-purple);background:#f8f4fb}.feedback-panel--teacher{margin:18px 0;border-left-color:var(--accent-green);background:#f6fbf8}.feedback-panel h3,.feedback-panel h4{margin-top:0}.feedback-panel h4{margin-bottom:6px;font-size:14px}.manual-correction-list{display:grid;gap:8px;margin-top:10px}.manual-correction-item{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;padding:10px 12px;border:1px solid rgba(211,108,108,.3);border-radius:8px;background:#ffffffb8}.manual-correction-item--pause{border-color:#b98a2e52}.manual-correction-item--corrected{border-color:#287a5d47;background:#f5fbf8}.manual-correction-item--confirmed-error{border-color:#b64b4b57;background:#fff4f4}.manual-correction-item strong,.manual-correction-item small{display:block}.manual-correction-item strong{color:var(--thu-ink);font-size:15px}.manual-correction-item small{margin-top:3px;color:var(--thu-muted);line-height:1.45}.manual-correction-item button{min-height:34px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer;white-space:nowrap}.manual-correction-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:7px}.manual-correction-item .manual-correction-action--error{border-color:#e0b3b3;color:#9d3838}.manual-correction-item .manual-correction-action--system{border-color:#b9d8c9;color:#22684f}.manual-correction-item--corrected button{border-color:#bfd8cb;color:var(--accent-green)}@media(max-width:720px){.manual-correction-item{grid-template-columns:1fr}.manual-correction-actions{justify-content:flex-start}}.teacher-review__header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.teacher-review__header h3{margin:0 0 4px}.teacher-review__header p{margin:0;font-size:14px}.teacher-review-display{display:grid;gap:10px;margin-top:12px}.teacher-review-display h4,.teacher-note-group h4{margin:0 0 6px;color:var(--thu-purple-dark);font-size:14px}.teacher-review-step,.teacher-review-note{margin:6px 0!important;padding:9px 11px;border:1px solid #d9eadf;border-radius:8px;background:#fff}.teacher-review-note strong,.teacher-review-note span{display:block}.teacher-review-note strong{color:var(--thu-ink);font-size:14px}.teacher-review-note span{margin-top:3px}.teacher-review-editor{display:grid;gap:12px;margin-top:12px}.teacher-review-editor label,.teacher-note-row{display:grid;gap:6px}.teacher-review-editor label>span,.teacher-note-row>span{color:var(--thu-muted);font-size:14px}.teacher-review-editor input,.teacher-review-editor textarea{width:100%;border:1px solid #d9eadf;border-radius:8px;background:#fff;color:var(--thu-ink);font:inherit}.teacher-review-editor input{min-height:38px;padding:0 10px}.teacher-review-editor textarea{min-height:84px;resize:vertical;padding:10px 12px;line-height:1.55}.teacher-note-group{display:grid;gap:8px}.teacher-note-row{grid-template-columns:minmax(160px,.45fr) minmax(0,1fr);align-items:center;padding:10px 12px;border:1px solid #d9eadf;border-radius:8px;background:#ffffffc2}.teacher-note-row strong,.teacher-note-row small{display:block}.teacher-note-row strong{color:var(--thu-ink)}.teacher-note-row small{margin-top:3px;color:var(--thu-muted);line-height:1.45}.teacher-review-actions{display:flex;justify-content:flex-end;gap:8px}.teacher-review-actions button{min-height:38px;padding:0 12px;border:1px solid var(--thu-purple-line);border-radius:8px;background:#fff;color:var(--thu-purple-dark);cursor:pointer}.teacher-review-actions button:last-child{border-color:var(--accent-green);background:var(--accent-green);color:#fff}.teacher-review-actions button:disabled{opacity:.6;cursor:default}.teacher-review-status{margin:0;color:var(--accent-green);font-size:14px}.teacher-review-delete{margin-right:auto;border-color:#e0c4c4!important;color:#9f3e3e!important}.fallback-note{color:#7a6a3d;font-size:14px}.progress-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-top:14px}.progress-item{min-height:92px;padding:12px;border:1px solid var(--thu-border);border-radius:8px;background:#fff}.progress-item span,.progress-item small{display:block}.progress-item span{color:#55606a;font-size:13px}.progress-item strong{display:block;margin:6px 0 4px;color:#384046;font-size:22px}.progress-item small{color:#7a8389;line-height:1.45}.progress-item--good strong{color:var(--accent-green)}.progress-item--needs-work strong{color:var(--accent-red)}.progress-item--neutral strong{color:#62686d}.sentence-item{padding:10px 12px;border-left:4px solid var(--thu-purple-line);background:#fbf9fc}.sentence-item--needs_work{border-left-color:#d36c6c;background:#fff6f6}.sentence-item--uncertain,.sentence-item--pause_after{border-left-color:var(--accent-gold);background:#fff9eb}.practice-words>div{display:flex;flex-wrap:wrap;gap:8px}.practice-words button{display:inline-flex;align-items:center;gap:6px;min-height:34px;padding:0 10px;border:1px solid #d36c6c;border-radius:999px;background:#fff6f6;color:#9f3e3e;cursor:pointer}.attempts{margin-top:28px;padding-top:20px;border-top:1px solid var(--thu-border)}.attempts h2{margin:0 0 14px;font-size:20px}.attempt-item{display:grid;grid-template-columns:1fr auto auto auto;align-items:center;gap:16px;width:100%;min-height:50px;margin-bottom:10px;padding:0 14px;border:1px solid var(--thu-border);border-radius:8px;background:#fff;color:#50575d;text-align:left;cursor:pointer}.attempt-item strong{color:var(--thu-purple);font-size:20px}.attempt-review-badge{display:inline-flex;align-items:center;min-height:22px;margin-left:8px;padding:0 7px;border-radius:999px;background:#eef8f3;color:var(--accent-green);font-size:12px;font-style:normal;white-space:nowrap}.attempt-item--active{border-color:var(--thu-purple);background:var(--thu-purple-soft)}.empty-history{margin:0;padding:14px 16px;border:1px dashed var(--thu-purple-line);border-radius:8px;color:#6a7378;line-height:1.6}.clear-button{display:inline-flex;align-items:center;gap:8px;min-height:40px;margin-top:4px;padding:0 14px;border:1px solid #d6dddd;border-radius:8px;background:#fff;color:#62686d;cursor:pointer}.clear-button:disabled{color:#a1a8ad;cursor:default}.transcript{margin-top:18px;padding:14px 16px;border-left:4px solid var(--thu-purple);background:#f8f4fb}.transcript h3{margin-top:0}.transcript p{color:#384046}.error{margin:24px 0 0;padding:14px 16px;border-radius:8px;background:#fff0f0;color:#a53a3a}.controls{position:fixed;z-index:40;right:0;bottom:0;left:0;display:grid;grid-template-columns:repeat(3,minmax(82px,1fr));align-items:center;gap:16px;max-width:820px;margin:0 auto;padding:14px 24px calc(18px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--thu-border);background:#faf8fcfa;box-shadow:0 -10px 28px #2c183614;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.round-button,.record-button{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;min-width:0;background:transparent;color:#3f4650}.round-button svg{width:62px;height:62px;padding:17px;border:2px solid #4b535d;border-radius:999px}.round-button:disabled{color:#a1a8ad;cursor:default}.round-button:disabled svg{border-color:#c6cccf}.record-button svg{width:74px;height:74px;padding:19px;border-radius:999px;background:var(--thu-purple);color:#fff;box-shadow:0 10px 22px #45205b3d;transform:translate(-4px)}.submit-recording-button svg{transform:translate(-4px)}.record-button--active svg{background:linear-gradient(180deg,#c45858,#9f3e3e)}.round-button span,.record-button span{color:#5d5f63;font-size:15px;white-space:nowrap}.round-button small,.record-button small{margin-top:-6px;color:#7f8a8d;font-size:12px;line-height:1;white-space:nowrap}.reference-speed-control{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-width:0}.reference-speed-control>span{color:#5d5f63;font-size:14px;white-space:nowrap}.reference-speed-control>div{display:inline-flex;overflow:hidden;border:1px solid #cdd6d8;border-radius:8px;background:#fff}.reference-speed-control button{min-width:44px;min-height:34px;padding:0 8px;border:0;border-right:1px solid #e2e7e8;background:transparent;color:#5d666b;cursor:pointer}.reference-speed-control button:last-child{border-right:0}.reference-speed-control__button--active{background:var(--thu-purple)!important;color:#fff!important}@media(max-width:900px){.teacher-overview__command,.teacher-overview__workspace{grid-template-columns:1fr}.teacher-overview__priority{border-right:0;border-bottom:1px solid var(--thu-border)}.teacher-overview__class-row{grid-template-columns:minmax(150px,.85fr) minmax(180px,1.15fr)}.teacher-overview__class-recency{grid-column:1 / -1;justify-content:space-between;padding-bottom:12px}}@media(max-width:560px){.screen{padding:0 18px 230px}.topbar{height:72px}.topbar h1{font-size:21px}.account-chip{max-width:46%;min-height:34px}.account-chip span{font-size:12px}.account-chip em{display:none}.account-chip button{flex-basis:32px}.role-switch{right:0;transform:scale(.86);transform-origin:right center}.role-switch button{padding:0 8px}.score-card{margin-top:30px}.library-view__header{flex-direction:column}.student-home-hero{grid-template-columns:1fr;gap:20px;padding:21px 19px}.student-home-hero__action{justify-items:stretch;min-width:0}.student-home-hero__action a{width:100%}.library-view__identity{width:100%;max-width:none}.assignment-card,.assignment-progress-card{grid-template-columns:1fr}.assignment-card__side,.assignment-progress-card__status,.assignment-progress-card__score,.assignment-progress-card__score em,.assignment-progress-card__score small{justify-items:stretch;text-align:left}.assignment-page-row{align-items:stretch}.assignment-student-evidence summary{grid-template-columns:minmax(0,1fr) 64px 36px;align-items:center;gap:8px}.assignment-page-row{flex-direction:column;gap:9px}.assignment-interactive-row{grid-template-columns:1fr;gap:8px}.assignment-interactive-row>span,.assignment-interactive-row>em{text-align:left}.assignment-interactive-row>button{width:100%}.assignment-page-row button{width:100%}.student-switcher{width:100%;min-width:0}.student-switcher>div{width:100%}.student-switcher button{flex:1;padding:0 6px}.custom-input{grid-template-columns:1fr}.teacher-dashboard__hero,.teacher-topic-group__header,.teacher-modal__header{flex-direction:column}.teacher-dashboard__hero button{width:100%;justify-content:center}.teacher-overview__priority{padding:21px 18px}.teacher-overview__priority-actions,.teacher-overview__priority-actions button{width:100%}.teacher-overview__signals{grid-template-columns:1fr 1fr}.teacher-overview__signals>div{padding:15px}.teacher-overview__signals strong{font-size:24px}.teacher-overview__section{padding:16px}.teacher-overview__section-header{align-items:flex-start;flex-direction:column}.teacher-overview__section-header button{width:100%}.teacher-overview__class-row{grid-template-columns:1fr;gap:10px;padding:14px 0}.teacher-overview__class-recency{grid-column:1;padding-bottom:0}.teacher-overview__recent-list>button{grid-template-columns:minmax(0,1fr) auto;gap:8px}.teacher-overview__recent-list>button>em{grid-column:1 / -1;justify-self:start}.teacher-system-details>summary{align-items:flex-start;flex-direction:column}.teacher-system-details>summary em{text-align:left}.speech-usage-panel__header{flex-direction:column}.speech-usage-panel__controls{align-items:stretch;flex-direction:column;width:100%}.speech-usage-periods{display:grid;grid-template-columns:repeat(3,1fr)}.student-feedback-panel__header,.student-feedback-panel__summary,.feedback-record__top,.teacher-feedback-card__summary{align-items:stretch;flex-direction:column}.student-feedback-panel__summary em{margin-left:0}.student-feedback-panel__summary:after{position:absolute;right:36px}.library-section__heading{align-items:stretch;flex-direction:column}.library-section__heading>span{align-self:flex-start}.speech-usage-panel__header button{width:100%;justify-content:center}.teacher-dashboard__stats{grid-template-columns:1fr 1fr}.teacher-home-tabs,.assignment-progress-panel__toolbar,.student-account-toolbar{align-items:stretch;flex-direction:column}.teacher-home-tabs button,.teacher-overview-actions button,.student-account-toolbar button{width:100%}.teacher-overview-actions,.speech-usage-summary,.speech-usage-operation-grid,.assignment-source-banner,.security-nudge,.student-account-row{grid-template-columns:1fr}.speech-usage-summary>div{border-right:0;border-bottom:1px solid var(--thu-border)}.speech-usage-summary>div:last-child{border-bottom:0}.speech-usage-operation-grid>div,.speech-usage-operation-grid>div:nth-child(3n),.speech-usage-operation-grid>div:nth-last-child(-n+2){border-right:0;border-bottom:1px solid var(--thu-border)}.speech-usage-operation-grid>div:last-child{border-bottom:0}.speech-usage-service-row{grid-template-columns:1fr 1fr;gap:8px 14px}.speech-usage-service-row>div:first-child{grid-column:1 / -1}.speech-usage-lower{grid-template-columns:1fr}.student-feedback-panel__header button,.teacher-feedback-card__actions button{width:100%;justify-content:center}.security-nudge button{width:100%}.teacher-report-panel__header{flex-direction:column}.teacher-report-metrics,.teacher-report-columns,.teacher-qa-grid,.class-management-grid,.teacher-class-grid,.interaction-entry-grid,.conversation-suggest-panel .conversation-suggestions,.conversation-custom-topic-grid,.conversation-voice-panel,.teacher-topic-editor__grid,.conversation-turn-card__grid,.teacher-topic-grid,.qa-prompt-grid,.qa-answer-panel{grid-template-columns:1fr}.teacher-class-panel__header{flex-direction:column}.conversation-generation-result{grid-template-columns:1fr}.teacher-class-selector{width:100%;flex-direction:column;align-items:stretch}.teacher-class-selector select{width:100%;min-width:0}.teacher-class-empty-select{justify-content:center}.bulk-student-card__header{flex-direction:column}.bulk-file-button,.teacher-class-panel__header button,.class-hide-button,.hidden-class-list button{width:100%}.hidden-class-list div,.student-create-row,.bulk-student-actions,.conversation-suggest,.qa-prompt-card,.qa-prompt-grid--list .qa-prompt-card,.conversation-custom-topic-card{grid-template-columns:1fr}.qa-prompt-card>span,.qa-prompt-card>strong,.qa-prompt-card>small,.qa-prompt-card>.conversation-topic-card__goals,.qa-prompt-card>.conversation-topic-actions,.conversation-custom-topic-card>strong,.conversation-custom-topic-card>span:first-of-type,.conversation-custom-topic-card>span:nth-of-type(2),.conversation-custom-topic-card>.conversation-topic-card__goals,.conversation-custom-topic-card>.conversation-custom-topic-actions{grid-column:1;grid-row:auto;justify-self:stretch}.conversation-voice-actions{justify-content:stretch}.conversation-voice-actions button{flex:1}.qa-score-explanation>div{grid-template-columns:1fr}.conversation-message{width:100%}.qa-hero{flex-direction:column}.qa-controls{justify-content:stretch}.qa-controls button{flex:1}.teacher-record,.teacher-overview-row{grid-template-columns:1fr auto}.conversation-history-record{grid-template-columns:1fr}.teacher-record__actions{justify-self:stretch}.teacher-record__actions button{flex:1}.teacher-overview-row span{white-space:normal}.custom-lesson-tools{grid-template-columns:1fr}.lesson-panel--review .lesson-panel__current{grid-template-columns:1fr;gap:4px}.difficulty-control{align-items:flex-start;flex-direction:column}.custom-lesson-editor{grid-template-columns:1fr}.custom-lesson-editor button{min-height:38px}.lesson-card{grid-template-columns:auto minmax(0,1fr)}.lesson-card small{grid-column:2;white-space:normal}.metric-strip{grid-template-columns:1fr 1fr}.feedback__header,.teacher-review__header{flex-direction:column}.teacher-edit-button{width:100%}.teacher-note-row{grid-template-columns:1fr}.teacher-review-actions{flex-direction:column}.teacher-review-delete{margin-right:0}.learning-overview__main{flex-direction:column}.learning-overview__stats{grid-template-columns:1fr 1fr}.next-step-card{grid-template-columns:auto minmax(0,1fr)}.next-step-card button{grid-column:1 / -1;width:100%}.progress-grid{grid-template-columns:1fr 1fr}.attempt-item{grid-template-columns:1fr auto}.score-card__top,.score-card__bottom{font-size:14px}.reading p{font-size:28px;line-height:1.85}.feedback-grid{grid-template-columns:1fr}.part-overview__header,.reading__header{align-items:flex-start;flex-direction:column}.controls{grid-template-columns:repeat(3,minmax(68px,1fr));gap:8px;padding:16px 16px 22px}.round-button svg{width:56px;height:56px;padding:15px}.record-button svg{width:70px;height:70px;padding:18px}.round-button span,.record-button span{font-size:13px}.reference-speed-control>span,.round-button small,.record-button small{font-size:11px}.reference-speed-control button{min-width:33px;min-height:32px;padding:0 5px;font-size:12px}}@media(min-width:980px){.screen{max-width:1040px;padding:0 32px 220px}.controls{max-width:1040px}.lesson-panel{padding:20px}.lesson-list{flex-wrap:wrap;overflow-x:visible}.custom-input{grid-template-columns:minmax(0,1fr) 160px;gap:14px}.custom-input textarea{min-height:132px;padding:14px 16px}.custom-input textarea{padding-bottom:38px}.custom-input input{min-height:46px;padding:0 16px}.score-card{margin:34px 0 38px}.reading p{font-size:32px;line-height:1.75}.feedback-grid{gap:36px}}.operator-dashboard{display:grid;gap:20px;margin-top:22px}.operator-dashboard h2,.operator-dashboard h3,.operator-dashboard p{margin:0}.operator-dashboard h2{color:var(--thu-ink);font-size:clamp(24px,3vw,32px);line-height:1.25}.operator-dashboard h3{color:var(--thu-ink);font-size:19px;line-height:1.35}.operator-dashboard p{color:var(--thu-muted);line-height:1.6}.operator-dashboard button,.operator-dashboard input,.operator-dashboard select{font:inherit}.operator-dashboard button{cursor:pointer}.operator-dashboard button:disabled{cursor:not-allowed;opacity:.52}.operator-dashboard button:focus-visible,.operator-dashboard input:focus-visible,.operator-dashboard select:focus-visible,.operator-dashboard summary:focus-visible{outline:3px solid rgba(95,43,122,.25);outline-offset:2px}.operator-hero{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:28px;padding:28px;overflow:hidden;border:1px solid var(--thu-purple-line);border-radius:12px;background:radial-gradient(circle at 95% 10%,rgba(185,138,46,.12),transparent 30%),linear-gradient(135deg,#faf6fc,#fff 72%)}.operator-hero p{max-width:720px;margin-top:10px}.operator-hero__actions{display:grid;justify-items:stretch;gap:10px}.operator-hero__actions button,.operator-panel__header>button,.operator-governance-head>button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:40px;padding:0 13px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;font-weight:750;white-space:nowrap}.operator-live-state{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:34px;padding:0 11px;border:1px solid #b7dccb;border-radius:999px;background:#eff9f4;color:#1e694e;font-size:13px;font-weight:800}.operator-live-state:before{width:8px;height:8px;border-radius:50%;background:currentColor;content:""}.operator-live-state.is-paused{border-color:#e7b7b2;background:#fff3f2;color:#9d332b}.operator-tabs{display:flex;align-items:center;gap:4px;overflow-x:auto;padding:5px;border:1px solid var(--thu-border);border-radius:10px;background:#f8f6f9;scrollbar-width:thin}.operator-tabs button{display:inline-flex;flex:1 0 auto;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:0 16px;border:1px solid transparent;border-radius:7px;background:transparent;color:var(--thu-muted);font-weight:750;white-space:nowrap}.operator-tabs button:hover{color:var(--thu-purple-dark)}.operator-tabs button.is-active{border-color:var(--thu-purple-line);background:#fff;color:var(--thu-purple-dark);box-shadow:0 2px 8px #45205b12}.operator-tabs button span{min-width:22px;padding:2px 6px;border-radius:999px;background:#ede5f1;color:var(--thu-purple-dark);font-size:12px;text-align:center}.operator-tabs button.is-active span{background:var(--thu-purple);color:#fff}.operator-status{padding:11px 13px;border-left:4px solid var(--thu-purple);background:var(--thu-purple-soft);color:var(--thu-purple-dark)!important;font-size:14px}.operator-overview,.operator-workspace{display:grid;gap:18px}.operator-priority{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(310px,.95fr);overflow:hidden;border:1px solid var(--thu-border);border-left-width:6px;border-radius:12px;background:#fff}.operator-priority--critical{border-left-color:var(--accent-red)}.operator-priority--warning{border-left-color:var(--accent-gold)}.operator-priority--normal{border-left-color:var(--accent-green)}.operator-priority__lead{display:grid;align-content:center;justify-items:start;min-height:220px;padding:26px 28px;background:linear-gradient(145deg,#faf8fb,#fff)}.operator-priority__lead h3{max-width:560px;font-size:clamp(22px,2.5vw,28px)}.operator-priority__lead p{max-width:600px;margin-top:9px}.operator-priority__lead button,.operator-onboarding>button{min-height:40px;margin-top:20px;padding:0 14px;border:1px solid var(--thu-purple);border-radius:8px;background:var(--thu-purple);color:#fff;font-weight:800}.operator-priority__queue{display:grid;align-content:stretch;border-left:1px solid var(--thu-border);background:#fcfbfd}.operator-priority__queue>button{display:grid;grid-template-columns:10px minmax(0,1fr);align-items:start;gap:11px;padding:14px 16px;border:0;border-bottom:1px solid var(--thu-border);background:transparent;text-align:left}.operator-priority__queue>button:last-child{border-bottom:0}.operator-priority__queue>button:hover{background:#f7f2fa}.operator-priority__queue strong,.operator-priority__queue small{display:block}.operator-priority__queue strong{color:var(--thu-ink);font-size:14px}.operator-priority__queue small{margin-top:4px;color:var(--thu-muted);font-size:12px;line-height:1.45}.priority-dot{width:9px;height:9px;margin-top:5px;border-radius:50%;background:var(--accent-green)}.priority-dot--critical{background:var(--accent-red)}.priority-dot--warning{background:var(--accent-gold)}.operator-priority__empty{display:flex;align-items:center;justify-content:center;gap:9px;min-height:100%;padding:24px;color:var(--accent-green);font-weight:750}.operator-metrics,.operator-system-kpis{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--thu-border);border-radius:10px;background:#fff}.operator-metrics article,.operator-system-kpis article{min-width:0;padding:17px 18px;border-right:1px solid var(--thu-border)}.operator-metrics article:last-child,.operator-system-kpis article:last-child{border-right:0}.operator-metrics span,.operator-metrics small,.operator-system-kpis span,.operator-system-kpis small{display:block;color:var(--thu-muted)}.operator-metrics span,.operator-system-kpis span{font-size:13px;font-weight:700}.operator-metrics strong,.operator-system-kpis strong{display:block;margin:7px 0 4px;overflow:hidden;color:var(--thu-purple-dark);font-size:25px;line-height:1.1;text-overflow:ellipsis}.operator-metrics small,.operator-system-kpis small{font-size:12px;line-height:1.4}.operator-onboarding{display:grid;grid-template-columns:minmax(220px,.75fr) minmax(360px,1.25fr);gap:10px 30px;padding:24px 26px;border:1px dashed var(--thu-purple-line);border-radius:10px;background:#fdfbff}.operator-onboarding>div p{margin-top:8px}.operator-onboarding ol{grid-row:1 / 3;grid-column:2;display:grid;gap:0;margin:0;padding:0;list-style:none}.operator-onboarding li{position:relative;display:grid;grid-template-columns:30px minmax(0,1fr);gap:11px;min-height:54px}.operator-onboarding li:not(:last-child):before{position:absolute;top:28px;bottom:0;left:14px;width:1px;background:var(--thu-purple-line);content:""}.operator-onboarding li>span{position:relative;z-index:1;display:grid;place-items:center;width:29px;height:29px;border:1px solid var(--thu-purple-line);border-radius:50%;background:#fff;color:var(--thu-muted);font-size:13px;font-weight:800}.operator-onboarding li.is-current>span{border-color:var(--thu-purple);background:var(--thu-purple);color:#fff}.operator-onboarding li.is-done>span{border-color:#b7dccb;background:#eff9f4;color:var(--accent-green)}.operator-onboarding li strong,.operator-onboarding li small{display:block}.operator-onboarding li strong{color:var(--thu-ink);font-size:14px}.operator-onboarding li small{margin-top:3px;color:var(--thu-muted);font-size:12px;line-height:1.4}.operator-onboarding>button{align-self:end;justify-self:start;margin-top:4px}.operator-overview__grid,.operator-governance-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.operator-panel,.operator-governance-head{min-width:0;padding:21px 22px;border:1px solid var(--thu-border);border-radius:10px;background:#fff}.operator-panel--wide{width:100%}.operator-panel__header,.operator-governance-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.operator-panel__header{margin-bottom:17px}.operator-panel__header p{max-width:690px;margin-top:5px;font-size:14px}.operator-panel__header>span{flex:0 0 auto;color:var(--thu-purple-dark);font-size:13px;font-weight:800}.operator-panel__subhead{display:flex;align-items:baseline;justify-content:space-between;gap:14px;margin-bottom:11px}.operator-panel__subhead strong{color:var(--thu-ink)}.operator-panel__subhead span{color:var(--thu-muted);font-size:12px}.operator-empty{padding:22px 8px;color:var(--thu-muted)!important;font-size:14px;text-align:center}.operator-class-map,.operator-audit-list,.operator-governance-list,.operator-account-table,.operator-class-table{display:grid}.operator-class-map>article,.operator-audit-list>article{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:16px;min-height:62px;padding:10px 2px;border-bottom:1px solid var(--thu-border)}.operator-class-map>article:last-child,.operator-audit-list>article:last-child{border-bottom:0}.operator-class-map>article.has-risk{margin:0 -8px;padding-right:10px;padding-left:10px;border-left:3px solid var(--accent-red);background:#fff8f7}.operator-class-map strong,.operator-class-map span,.operator-audit-list strong,.operator-audit-list span{display:block}.operator-class-map strong,.operator-audit-list strong{color:var(--thu-ink);font-size:14px}.operator-class-map span,.operator-audit-list span,.operator-audit-list time{margin-top:3px;color:var(--thu-muted);font-size:12px}.operator-class-map>article>div:last-child{text-align:right}.operator-audit-list time{white-space:nowrap}.operator-create-account{display:grid;grid-template-columns:minmax(130px,.75fr) minmax(140px,.85fr) minmax(210px,1.2fr) auto;gap:9px;padding:14px;border:1px solid var(--thu-purple-line);border-radius:9px;background:#faf7fc}.operator-create-account input,.operator-account-table input,.operator-class-table select,.operator-assist-create input,.operator-assist-create select,.operator-class-select select,.operator-incident-create input,.operator-incident-create select{width:100%;min-height:40px;padding:0 11px;border:1px solid var(--thu-purple-line);border-radius:7px;background:#fff;color:var(--thu-ink)}.operator-create-account button,.operator-class-select button,.operator-assist-create button,.operator-incident-create button{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:40px;padding:0 13px;border:1px solid var(--thu-purple);border-radius:7px;background:var(--thu-purple);color:#fff;font-weight:800;white-space:nowrap}.operator-credential{display:grid;grid-template-columns:minmax(180px,.7fr) minmax(0,1.3fr) auto;align-items:center;gap:14px;margin-top:13px;padding:14px;border:1px solid #dfc17e;border-radius:9px;background:#fffaf0}.operator-credential strong,.operator-credential span{display:block}.operator-credential span{margin-top:3px;color:#705d34;font-size:12px;line-height:1.4}.operator-credential code{min-width:0;max-height:140px;overflow:auto;padding:10px;border:1px solid #ead7aa;border-radius:6px;background:#fff;font-size:12px;white-space:pre}.operator-credential button{min-height:38px;padding:0 11px;border:1px solid #8b681e;border-radius:7px;background:#fff;color:#70510f;font-weight:800}.credential-actions{display:flex;align-items:stretch;flex-wrap:wrap;gap:8px}.credential-actions button{display:inline-flex;align-items:center;justify-content:center;gap:6px}.credential-action-status{grid-column:1 / -1;margin:0;color:#236345;font-size:13px;font-weight:750}.operator-account-table,.operator-class-table{margin-top:14px;border-top:1px solid var(--thu-border)}.operator-history-details{margin-top:14px;border:1px solid var(--thu-border);border-radius:9px;background:#fbfafc}.operator-history-details>summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 14px;color:var(--thu-purple-dark);cursor:pointer;list-style:none}.operator-history-details>summary::-webkit-details-marker,.operator-lifecycle-details>summary::-webkit-details-marker{display:none}.operator-history-details>summary:before,.operator-lifecycle-details>summary:before{content:"›";flex:0 0 auto;color:var(--thu-purple);font-size:18px;font-weight:800;line-height:1;transform:rotate(0);transition:transform .18s ease}.operator-history-details[open]>summary:before,.operator-lifecycle-details[open]>summary:before{transform:rotate(90deg)}.operator-history-details>summary span{font-weight:800}.operator-history-details>summary small{color:var(--thu-muted);font-size:12px;font-weight:500;text-align:right}.operator-history-details[open]>summary{border-bottom:1px solid var(--thu-border);background:#f7f3f9}.operator-history-details>.operator-account-table,.operator-history-details>.operator-class-table{margin:0 14px 12px;border-top:0}.operator-account-table>article,.operator-class-table>article{display:grid;align-items:center;gap:10px;min-height:68px;padding:12px 2px;border-bottom:1px solid var(--thu-border)}.operator-account-table>article{grid-template-columns:minmax(155px,.8fr) minmax(150px,.85fr) minmax(190px,1.05fr) auto}.operator-class-table>article{grid-template-columns:minmax(180px,1fr) minmax(220px,1.1fr) auto}.operator-account-table>article.is-inactive,.operator-class-table>article.is-inactive{opacity:.64;background:#fbfafb}.operator-class-table>article.has-risk{margin:0 -10px;padding-right:10px;padding-left:10px;border-left:3px solid var(--accent-red);background:#fff8f7}.operator-class-table>article.has-pending-lifecycle{margin:0 -10px;padding-right:10px;padding-left:10px;border-left:3px solid #c4892d;background:#fffaf0}.operator-account-identity strong,.operator-account-identity span,.operator-class-table>article>div strong,.operator-class-table>article>div span{display:block}.operator-account-identity strong,.operator-class-table>article>div strong{color:var(--thu-ink)}.operator-account-identity span,.operator-class-table>article>div span{margin-top:3px;color:var(--thu-muted);font-size:12px}.operator-account-actions{display:flex;justify-content:flex-end;gap:7px}.operator-account-actions button,.operator-class-table>article>button,.operator-class-actions button{min-height:36px;padding:0 10px;border:1px solid var(--thu-purple-line);border-radius:7px;background:#fff;color:var(--thu-purple-dark);font-weight:750;white-space:nowrap}.operator-class-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:7px}.operator-class-actions button{display:inline-flex;align-items:center;justify-content:center;gap:6px}.operator-class-actions button:first-child{border-color:var(--thu-purple);background:var(--thu-purple);color:#fff}.operator-class-actions button:disabled{opacity:.55;cursor:default}.operator-account-actions button:first-child{border-color:var(--thu-purple);background:var(--thu-purple);color:#fff}.operator-class-table label{display:grid;gap:4px}.operator-class-table label>span{color:var(--thu-muted);font-size:11px}.operator-assist-create{margin-top:14px;padding:12px 14px;border:1px dashed var(--thu-purple-line);border-radius:8px;background:#fdfbff}.operator-assist-create summary{color:var(--thu-purple-dark);font-weight:800;cursor:pointer}.operator-assist-create>p{margin-top:8px;font-size:13px}.operator-assist-create>div{display:grid;grid-template-columns:1fr 1fr minmax(180px,.8fr) auto;gap:8px;margin-top:12px}.operator-class-select{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.operator-warning-strip{display:flex;align-items:flex-start;gap:9px;padding:11px 12px;border:1px solid #e7cf9a;border-radius:8px;background:#fff9eb;color:#76520c;font-size:13px;line-height:1.45}.operator-warning-strip svg{flex:0 0 auto;margin-top:1px}.operator-lifecycle-strip{display:flex;align-items:flex-start;gap:9px;padding:11px 12px;border:1px solid #d7c5e4;border-radius:8px;background:#faf7fc;color:#5b2b72;font-size:13px;line-height:1.45}.operator-lifecycle-details{display:block}.operator-lifecycle-details>summary{display:flex;align-items:center;gap:9px;cursor:pointer;list-style:none}.operator-lifecycle-details>summary>span{display:grid;gap:2px}.operator-lifecycle-details>summary strong{font-weight:800}.operator-lifecycle-details>summary small{color:#765288;font-size:12px}.operator-lifecycle-details[open]>summary{padding-bottom:10px;border-bottom:1px solid rgb(91 43 114 / 14%)}.operator-lifecycle-details>.operator-lifecycle-strip__content{padding-top:10px;padding-left:27px}.operator-lifecycle-strip svg{flex:0 0 auto;margin-top:1px}.operator-lifecycle-strip__content{min-width:0;flex:1}.operator-lifecycle-strip__content>p{margin:0}.operator-lifecycle-accounts{display:grid;gap:7px;margin-top:10px}.operator-lifecycle-accounts>div{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 10px;border:1px solid rgb(91 43 114 / 14%);border-radius:7px;background:#ffffffb8}.operator-lifecycle-accounts span,.operator-lifecycle-accounts small{display:block}.operator-lifecycle-accounts small{margin-top:2px;color:var(--thu-muted)}.operator-lifecycle-accounts button{flex:0 0 auto;border:1px solid #7b4b91;border-radius:7px;padding:7px 10px;background:#fff;color:#5b2b72;font-weight:750;cursor:pointer}.operator-lifecycle-accounts button:disabled{cursor:wait;opacity:.6}.operator-lifecycle-accounts em{flex:0 0 auto;padding:6px 9px;border-radius:999px;background:#ece7ef;color:#665d6c;font-size:12px;font-style:normal;font-weight:750;white-space:nowrap}.operator-system-kpis{margin-bottom:18px}.operator-system-kpis--period{grid-template-columns:repeat(3,minmax(0,1fr))}.operator-system-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:22px;padding:18px 0;border-top:1px solid var(--thu-border)}.operator-service-list{display:grid}.operator-service-list article{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:3px 16px;padding:10px 0;border-bottom:1px solid var(--thu-border)}.operator-service-list article>div:nth-child(2){text-align:right}.operator-service-list strong,.operator-service-list span{display:block}.operator-service-list strong{color:var(--thu-ink);font-size:14px}.operator-service-list span,.operator-service-list small{color:var(--thu-muted);font-size:12px}.operator-service-list small{grid-column:1 / -1}.operator-health-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:0}.operator-health-list>div{display:flex;min-width:0;min-height:92px;padding:13px 14px;border:1px solid var(--thu-border);border-radius:8px;background:#fbf9fc;flex-direction:column;justify-content:space-between;gap:8px}.operator-health-list dt{color:var(--thu-muted);font-size:13px}.operator-health-list dd{margin:0;color:var(--thu-ink);font-size:13px;font-weight:700;line-height:1.45;text-align:left}.operator-latency{padding-top:17px;border-top:1px solid var(--thu-border)}.operator-billing{margin-top:20px;padding-top:18px;border-top:1px solid var(--thu-border)}.operator-billing__grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.operator-billing__grid article{min-width:0;padding:15px;border:1px solid var(--thu-border);border-radius:8px;background:#fbf9fc}.operator-billing__grid span,.operator-billing__grid small{display:block;color:var(--thu-muted)}.operator-billing__grid strong{display:block;margin:7px 0;color:var(--thu-purple);font-size:20px;line-height:1.25}.operator-billing__grid small{font-size:12px;line-height:1.5}.operator-latency-table{overflow-x:auto}.operator-latency-table>div{display:grid;grid-template-columns:54px minmax(230px,1fr) 90px 120px;align-items:center;gap:12px;min-width:590px;padding:9px 2px;border-bottom:1px solid var(--thu-border)}.operator-latency-table code{width:fit-content;padding:3px 5px;border-radius:4px;background:var(--thu-purple-soft);color:var(--thu-purple-dark);font-size:11px;font-weight:800}.operator-latency-table span{overflow:hidden;color:var(--thu-ink);font-size:13px;text-overflow:ellipsis;white-space:nowrap}.operator-latency-table strong,.operator-latency-table small{text-align:right}.operator-latency-table strong{color:var(--thu-purple-dark);font-size:13px}.operator-latency-table small{color:var(--thu-muted);font-size:11px}.operator-cost-boundary{margin-top:17px!important;padding:12px 14px;border-left:4px solid var(--accent-gold);background:#fffaf0;color:#705d34!important;font-size:13px}.operator-governance-head{align-items:center;background:linear-gradient(135deg,#fff8f7,#fff 72%)}.operator-governance-head p{max-width:690px;margin-top:7px}.operator-governance-list>article{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:64px;padding:11px 2px;border-bottom:1px solid var(--thu-border)}.operator-governance-list>article:last-child{border-bottom:0}.operator-governance-list strong,.operator-governance-list span,.operator-governance-list small{display:block}.operator-governance-list strong{color:var(--thu-ink);font-size:14px}.operator-governance-list span,.operator-governance-list small{margin-top:3px;color:var(--thu-muted);font-size:12px;line-height:1.4}.operator-governance-list>article>div:last-child{display:flex;flex:0 0 auto;gap:6px}.operator-governance-list button{min-height:34px;padding:0 9px;border:1px solid var(--thu-purple-line);border-radius:7px;background:#fff;color:var(--thu-purple-dark);font-size:12px;font-weight:750}.operator-governance-list button.is-danger{border-color:#d98c84;color:#942d25}.operator-maintenance{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:14px;padding:13px;border:1px solid #b7dccb;border-radius:8px;background:#f3faf6}.operator-maintenance.is-active{border-color:#e0a7a2;background:#fff3f2}.operator-maintenance strong,.operator-maintenance span{display:block}.operator-maintenance strong{color:var(--thu-ink)}.operator-maintenance span{margin-top:3px;color:var(--thu-muted);font-size:12px}.operator-maintenance button{min-height:36px;padding:0 10px;border:1px solid var(--accent-red);border-radius:7px;background:#fff;color:#942d25;font-size:12px;font-weight:800;white-space:nowrap}.operator-incident-create{display:grid;grid-template-columns:110px minmax(0,1fr) auto;gap:8px;margin-top:12px}.operator-audit-table{overflow-x:auto}.operator-audit-table>div{display:grid;grid-template-columns:minmax(170px,1.2fr) minmax(110px,.8fr) minmax(100px,.7fr) 72px 118px;align-items:center;gap:12px;min-width:680px;min-height:48px;padding:8px 2px;border-bottom:1px solid var(--thu-border)}.operator-audit-table code{overflow:hidden;color:var(--thu-purple-dark);font-size:12px;font-weight:750;text-overflow:ellipsis;white-space:nowrap}.operator-audit-table span,.operator-audit-table time{color:var(--thu-muted);font-size:12px}.operator-audit-table em{width:fit-content;padding:3px 7px;border-radius:999px;background:#fff0ef;color:var(--accent-red);font-size:11px;font-style:normal;font-weight:800}.operator-audit-table em.is-success{background:#eff9f4;color:var(--accent-green)}@media(max-width:900px){.operator-priority,.operator-onboarding,.operator-overview__grid,.operator-governance-grid,.operator-system-grid{grid-template-columns:1fr}.operator-priority__queue{border-top:1px solid var(--thu-border);border-left:0}.operator-health-list,.operator-billing__grid{grid-template-columns:repeat(2,minmax(0,1fr))}.operator-onboarding ol{grid-row:auto;grid-column:auto}.operator-metrics,.operator-system-kpis{grid-template-columns:repeat(2,minmax(0,1fr))}.operator-metrics article:nth-child(2),.operator-system-kpis article:nth-child(2){border-right:0}.operator-metrics article:nth-child(-n+2),.operator-system-kpis article:nth-child(-n+2){border-bottom:1px solid var(--thu-border)}.operator-create-account,.operator-account-table>article{grid-template-columns:repeat(2,minmax(0,1fr))}.operator-create-account button,.operator-account-actions{justify-self:stretch}.operator-account-actions button{flex:1}.operator-class-table>article{grid-template-columns:minmax(150px,.7fr) minmax(210px,1.3fr)}.operator-class-table>article>button,.operator-class-actions{grid-column:1 / -1;justify-self:end}.operator-assist-create>div{grid-template-columns:1fr 1fr}}@media(max-width:680px){.operator-dashboard{gap:14px;margin-top:16px}.operator-hero{grid-template-columns:1fr;gap:18px;padding:20px}.operator-hero__actions{grid-template-columns:1fr}.operator-tabs{margin-right:-18px;margin-left:-18px;padding-right:18px;padding-left:18px;border-right:0;border-left:0;border-radius:0}.operator-tabs button{flex:0 0 auto;padding:0 13px}.operator-priority__lead{min-height:0;padding:21px 19px}.operator-metrics,.operator-system-kpis{grid-template-columns:1fr}.operator-metrics article,.operator-system-kpis article,.operator-metrics article:nth-child(2),.operator-system-kpis article:nth-child(2){border-right:0;border-bottom:1px solid var(--thu-border)}.operator-metrics article:last-child,.operator-system-kpis article:last-child{border-bottom:0}.operator-panel,.operator-governance-head,.operator-onboarding{padding:17px 16px}.operator-panel__header,.operator-governance-head{align-items:stretch;flex-direction:column}.operator-panel__header>button,.operator-governance-head>button{width:100%}.operator-create-account,.operator-account-table>article,.operator-class-table>article,.operator-assist-create>div,.operator-credential,.operator-incident-create{grid-template-columns:1fr}.operator-account-actions{justify-self:stretch}.operator-class-table>article>button,.operator-class-actions{grid-column:auto;justify-self:stretch}.operator-class-actions button{flex:1 1 100%}.operator-class-select{justify-content:stretch}.operator-class-select select,.operator-class-select button{flex:1 1 100%}.operator-health-list>div{min-height:0}.operator-health-list,.operator-billing__grid{grid-template-columns:1fr}.operator-health-list dd{text-align:left}.operator-maintenance{grid-template-columns:1fr}.operator-maintenance button{width:100%}.operator-governance-list>article{align-items:stretch;flex-direction:column}.operator-governance-list>article>div:last-child{justify-content:flex-end}}@media(max-width:400px){.topbar h1{font-size:18px}.account-chip{max-width:none}.account-chip>svg,.account-chip span,.account-chip em{display:none}.student-feedback-panel__summary{padding-right:34px}}@media(max-width:680px){.qa-answer-panel,.conversation-voice-panel{grid-template-columns:1fr}.conversation-orb{width:60px;height:60px}.conversation-voice-actions,.qa-controls{display:grid;grid-template-columns:1fr;width:100%}.conversation-voice-actions button,.qa-controls button{width:100%;min-height:44px}.controls{padding-bottom:calc(16px + env(safe-area-inset-bottom,0px))}.microphone-check{grid-template-columns:minmax(0,1fr)}.microphone-check>button{width:100%}}
