:root{color:#171411;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;--canvas:#f7f2eb;--paper:#fffdf8;--paper-soft:#efe6da;--paper-strong:#e7dccd;--ink:#171411;--body:#4b463f;--muted:#746d63;--hairline:#ddd2c3;--coral:#c96f56;--coral-dark:#a85640;--teal:#4f9f92;--amber:#d89a45;--blue:#466b99;--dark:#1c1a17;--shadow:0 18px 46px #46362124;--soft-shadow:0 10px 28px #4a38221a;background:#f3eee7;font-family:Inter,PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,sans-serif}*{box-sizing:border-box}body{min-width:320px;min-height:100vh;margin:0}button{font:inherit;color:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent;border:0}.stage{background:linear-gradient(120deg, #c96f561f, transparent 32%), linear-gradient(230deg, #4f9f921f, transparent 34%), var(--canvas);place-items:center;min-height:100vh;padding:28px 14px;display:grid}.phone{background:linear-gradient(#fffdf8f5,#f7f2ebfa 62%,#efe6dafa);border:1px solid #52422d2e;border-radius:34px;width:min(390px,100vw - 24px);height:min(844px,100vh - 32px);min-height:740px;position:relative;overflow:hidden;box-shadow:0 30px 80px #3a2a1838,inset 0 0 0 7px #ffffff73}.aurora{pointer-events:none;opacity:.48;filter:blur(3px);position:absolute}.aurora-one{background:radial-gradient(circle,#c96f5642,#0000 67%);width:190px;height:190px;top:-56px;left:-42px}.aurora-two{background:radial-gradient(circle,#4f9f923d,#0000 66%);width:180px;height:180px;bottom:82px;right:-58px}.screen{z-index:1;scrollbar-width:none;height:100%;padding:28px 22px;position:relative;overflow-y:auto}.screen::-webkit-scrollbar{display:none}.with-nav{padding-bottom:132px}.detail-screen{padding-top:96px;padding-bottom:34px}.topbar{z-index:12;justify-content:space-between;align-items:center;height:52px;display:flex;position:absolute;top:18px;left:20px;right:20px}.topbar:before{content:"";z-index:-1;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffdf8f0;border:1px solid #ddd2c39e;border-radius:18px;position:absolute;inset:-8px -10px;box-shadow:0 12px 30px #4a382214}.topbar strong{letter-spacing:0;font-size:18px}.icon-btn,.topbar-dot,.menu-btn{width:44px;height:44px;box-shadow:var(--soft-shadow);background:#fffdf8e0;border:1px solid #ddd2c3c7;border-radius:14px;place-items:center;display:grid}.topbar-dot{color:var(--coral)}.topbar-spacer{flex:none;width:44px;height:44px}.home-head,.learn-head{justify-content:space-between;align-items:center;gap:14px;margin-bottom:16px;display:flex}.home-head>div{gap:4px;display:grid}.home-head strong{font-size:19px;line-height:1.25}.today-label{color:var(--muted);margin:0;font-size:13px;font-weight:700}.status-pill,.ai-chip{min-height:32px;color:var(--coral-dark);background:#f4e6dc;border-radius:999px;align-items:center;gap:7px;padding:0 11px;font-size:13px;font-weight:800;display:inline-flex;box-shadow:inset 0 0 0 1px #c96f5624}.status-pill span{background:var(--teal);border-radius:50%;width:8px;height:8px;box-shadow:0 0 0 5px #4f9f9221}.hero-card,.question-panel,.ask-card,.profile-hero,.answer-card,.workflow-card,.tool-detail-hero,.profile-detail-card,.chart-card,.scanner,.course-hero,.mistake-panel{box-shadow:var(--soft-shadow);background:#fffdf8e0;border:1px solid #ddd2c3db;border-radius:16px}.hero-card{background:linear-gradient(145deg,#fffdf8f5,#f0e6dadb),radial-gradient(circle at 96% 0,#c96f5626,#0000 36%);align-content:space-between;gap:16px;min-height:222px;padding:18px;display:grid}.teacher-intro{grid-template-columns:82px 1fr;align-items:center;gap:16px;display:grid}.teacher-avatar{width:82px;height:82px;position:relative}.teacher-avatar img,.teacher-row img{object-fit:cover;width:100%;height:100%}.teacher-avatar img{border-radius:16px;box-shadow:0 12px 24px #3a2a182e}.teacher-avatar i{background:var(--dark);color:#fffdf8;border-radius:50%;place-items:center;width:29px;height:29px;font-style:normal;display:grid;position:absolute;bottom:-6px;right:-6px;box-shadow:0 0 0 5px #fffdf8eb}.eyebrow{color:var(--coral-dark);margin:0 0 7px;font-size:13px;font-weight:800}h1,h2,h3,p{margin-top:0}h1{letter-spacing:0;margin-bottom:0;font-family:Georgia,Songti SC,STSong,serif;font-size:25px;font-weight:500;line-height:1.2}.hero-dialogue{background:var(--dark);color:#f8f1e8;border-radius:14px;padding:13px 14px;font-size:14px;font-weight:650;line-height:1.45}.learning-signals{grid-template-columns:1fr 1fr;gap:10px;margin-top:12px;display:grid}.learning-signals div{background:#efe6dab3;border:1px solid #ddd2c3b8;border-radius:14px;align-content:center;gap:3px;min-height:86px;padding:13px;display:grid}.learning-signals small,.ask-card small{color:var(--muted);font-weight:750}.learning-signals strong{color:var(--ink);font-size:22px}.learning-signals span{color:var(--body);font-size:12px;font-weight:650}.ask-card{gap:12px;margin-top:12px;padding:15px;display:grid}.ask-card strong{margin-top:3px;font-size:18px;display:block}.ask-actions{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.ask-actions button{background:var(--dark);color:#fffdf8;border-radius:12px;justify-content:center;align-items:center;gap:6px;min-height:44px;font-size:14px;font-weight:850;display:inline-flex}.ask-actions button:first-child{background:var(--coral)}.ask-actions button:last-child{background:var(--teal)}.voice-status{min-height:42px;color:var(--coral-dark);background:#f2e5dc;border-radius:12px;justify-content:space-between;align-items:center;gap:10px;padding:0 12px;font-weight:850;display:flex}.voice-status span{align-items:center;gap:7px;display:inline-flex}.voice-status.recording,.voice-status.thinking,.voice-status.answered{background:var(--dark);color:#fffdf8}.question-panel{margin-top:12px;padding:14px}.teacher-home .question-panel{white-space:nowrap;padding:12px;overflow-x:auto}.teacher-home .question-panel .section-title{white-space:normal}.section-title{justify-content:space-between;align-items:center;gap:10px;margin:0 0 10px;display:flex}.section-title span{font-size:20px;font-weight:900}.section-title small{color:var(--muted);font-weight:750}.question-row,.settings-row,.book-list-row,.lesson-list button,.settings-list.compact button{width:100%;min-height:46px;color:var(--body);text-align:left;background:0 0;border-radius:12px;justify-content:space-between;align-items:center;gap:12px;display:flex}.question-row{padding:0 8px;font-size:16px;font-weight:760}.teacher-home .question-row{width:auto;min-height:36px;color:var(--coral-dark);background:#f2e5dc;border-radius:999px;margin-right:8px;padding:0 11px;font-size:14px;display:inline-flex}.question-row:hover,.settings-row:hover,.teacher-row:hover,.book-list-row:hover{background:#efe6dabd}.waveform{align-items:center;gap:4px;display:inline-flex;position:relative}.waveform i{background:#fffdf8bf;border-radius:999px;width:4px;height:12px}.waveform.active i{animation:.85s ease-in-out infinite wave}.waveform i:nth-child(2n){height:20px;animation-delay:.12s}.waveform i:nth-child(3n){height:28px;animation-delay:.24s}.tabbar{z-index:4;height:82px;box-shadow:var(--shadow);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fffdf8ed;border:1px solid #ddd2c3e6;border-radius:18px;grid-template-columns:repeat(3,1fr);gap:8px;padding:8px;display:grid;position:absolute;bottom:18px;left:18px;right:18px}.tabbar button{color:var(--muted);background:0 0;border-radius:12px;align-content:center;place-items:center;gap:4px;font-size:13px;font-weight:850;display:grid}.tabbar button.active{color:#fffdf8;background:var(--dark)}.tabbar svg{stroke-width:2px;width:25px;height:25px}.grade-select{background:var(--paper);min-height:44px;box-shadow:var(--soft-shadow);border:1px solid #ddd2c3cc;border-radius:12px;align-items:center;gap:5px;padding:0 14px;font-size:22px;font-weight:900;display:inline-flex}.grade-picker{z-index:6;position:relative}.grade-select svg{transition:transform .18s}.grade-select.open svg{transform:rotate(180deg)}.grade-menu{background:#fffdf8fa;border:1px solid #ddd2c3f2;border-radius:16px;gap:12px;width:292px;padding:14px;display:grid;position:absolute;top:54px;left:0;box-shadow:0 18px 42px #4a38222e}.grade-group{gap:8px;display:grid}.grade-group>span{color:var(--muted);font-size:13px;font-weight:850}.grade-group>div{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.grade-group button{min-height:38px;color:var(--coral-dark);background:#f2e5dc;border-radius:11px;font-weight:850}.grade-group button.active{background:var(--dark);color:#fffdf8}.book-grid,.tool-grid,.profile-actions,.report-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.book-card,.tool-card{text-align:left;background:var(--paper);min-height:176px;box-shadow:var(--soft-shadow);border:1px solid #ddd2c3d1;border-radius:16px;padding:15px}.book-card img{object-fit:cover;border-radius:9px;width:48px;height:58px;box-shadow:0 8px 18px #4a382229}.book-card.yellow{background:linear-gradient(145deg,#fff4c8,#fffdf8)}.book-card.green{background:linear-gradient(145deg,#dff2dc,#fffdf8)}.book-card strong,.tool-card strong{margin:12px 0 8px;font-size:17px;line-height:1.2;display:block}.book-card p,.tool-card small{color:var(--muted);font-weight:650;line-height:1.42;display:block}.progress-line{background:#fffdf8c2;border-radius:999px;height:8px;margin:13px 0 8px;overflow:hidden}.progress-line span{border-radius:inherit;background:linear-gradient(90deg, var(--coral), var(--amber));height:100%;display:block}.tool-section{margin-top:22px}.tool-card{min-height:146px;color:var(--ink)}.tool-card svg{color:var(--coral)}.profile-screen{padding-top:34px}.profile-hero{text-align:center;background:linear-gradient(#fffdf8f5,#efe6dad1),radial-gradient(circle at 50% 0,#d89a4529,#0000 42%);padding:26px 18px 20px}.profile-avatar{background:var(--dark);color:#fffdf8;width:104px;height:104px;box-shadow:0 0 0 8px #efe6dac2, var(--soft-shadow);border-radius:50%;place-items:center;margin:0 auto 16px;display:grid;overflow:hidden}.profile-avatar img{object-fit:cover;width:100%;height:100%}.teacher-profile-screen{padding-bottom:34px}.teacher-profile-hero{box-shadow:var(--soft-shadow);background:linear-gradient(145deg,#fffdf8f5,#f0e6dadb),radial-gradient(circle at 96% 0,#c96f5626,#0000 36%);border:1px solid #ddd2c3db;border-radius:18px;grid-template-columns:94px 1fr;align-items:center;gap:16px;padding:18px;display:grid}.teacher-profile-hero img{object-fit:cover;border-radius:16px;width:94px;height:112px;box-shadow:0 12px 24px #3a2a1829}.teacher-profile-hero h2{margin:12px 0 8px;font-size:24px;line-height:1.18}.teacher-profile-hero p,.teacher-source-card p,.teacher-skill-grid p,.advantage-row p,.companion-step p{color:var(--body);margin-bottom:0;font-weight:680;line-height:1.5}.teacher-source-card{text-align:left;margin-top:14px}.teacher-source-card h3,.teacher-advantage-card h3,.teacher-companion-card h3{margin-bottom:10px;font-size:20px}.teacher-skill-grid{grid-template-columns:1fr 1fr;gap:10px;margin:14px 0;display:grid}.teacher-skill-grid section{min-height:142px;box-shadow:var(--soft-shadow);background:#fffdf8db;border:1px solid #ddd2c3c7;border-radius:16px;padding:14px}.teacher-skill-grid strong{color:var(--coral-dark);margin-bottom:8px;font-size:17px;display:block}.teacher-skill-grid p{font-size:13px}.teacher-advantage-card{margin:14px 0}.advantage-row{border-top:1px solid #ddd2c3b8;gap:5px;padding:12px 0;display:grid}.advantage-row:first-of-type{border-top:0}.advantage-row span{color:var(--ink);font-weight:900}.teacher-companion-card{gap:10px;display:grid}.companion-step{background:#fffdf8b8;border:1px solid #ddd2c3b8;border-radius:14px;grid-template-columns:42px 1fr;align-items:start;gap:10px;padding:10px;display:grid}.companion-step span{width:34px;height:34px;color:var(--coral-dark);background:#f2e5dc;border-radius:10px;place-items:center;font-weight:900;display:grid}.profile-hero p{color:var(--muted);margin-bottom:18px;font-size:16px;font-weight:800}.profile-stats{grid-template-columns:1fr 1fr;gap:10px;display:grid}.profile-stats span,.report-grid div,.data-card{background:#fffdf8c7;border-radius:14px;padding:12px}.profile-stats strong,.report-grid strong,.data-card strong{color:var(--coral-dark);font-size:24px;display:block}.profile-actions{margin:16px 0}.profile-actions button,.primary-btn,.workflow-card button,.scanner button,.profile-detail-card button{background:var(--dark);color:#fffdf8;min-height:52px;box-shadow:var(--soft-shadow);border-radius:12px;justify-content:center;align-items:center;gap:8px;font-weight:900;display:inline-flex}.settings-list{background:#fffdf885;border:1px solid #ddd2c3d1;border-radius:16px;gap:8px;padding:8px;display:grid}.settings-row{padding:9px 8px}.settings-row span,.book-list-row span{flex:1;gap:3px;display:grid}.settings-row small,.book-list-row small,.teacher-row small{color:var(--muted);font-weight:650}.segmented{background:#efe6dad1;border-radius:14px;grid-template-columns:1fr 1fr;gap:6px;margin-bottom:18px;padding:6px;display:grid}.segmented button{min-height:42px;color:var(--muted);background:0 0;border-radius:10px;font-weight:900}.segmented button.active{background:var(--paper);color:var(--ink);box-shadow:var(--soft-shadow)}.teacher-list{gap:12px;display:grid}.teacher-row{text-align:left;width:100%;min-height:108px;box-shadow:var(--soft-shadow);background:#fffdf8d1;border:1px solid #ddd2c3b8;border-radius:16px;grid-template-columns:72px 1fr auto;align-items:center;gap:13px;padding:12px;display:grid}.teacher-row img{border-radius:13px}.teacher-row span{gap:4px;display:grid}.teacher-row strong{font-size:21px}.teacher-row em{color:var(--body);font-style:normal;font-weight:750;line-height:1.3}.chat-screen,.chat-thread{flex-direction:column;gap:14px;display:flex}.chat-bubble{border-radius:16px;max-width:88%;padding:14px 15px;font-weight:750;line-height:1.48}.chat-bubble.user{background:var(--coral);color:#fffdf8;border-bottom-right-radius:6px;align-self:flex-end}.chat-bubble.ai{background:var(--paper);box-shadow:var(--soft-shadow);border:1px solid #ddd2c3bd;border-bottom-left-radius:6px;align-items:flex-start;gap:8px;display:flex}.chat-bubble.ai svg{color:var(--coral);flex:none;margin-top:2px}.suggestions{flex-wrap:wrap;gap:9px;display:flex}.suggestions button,.mini-actions button{min-height:39px;color:var(--coral-dark);background:#f2e5dc;border-radius:999px;align-items:center;gap:6px;padding:0 12px;font-weight:850;display:inline-flex}.input-bar{background:var(--paper);color:#998f82;min-height:56px;box-shadow:var(--soft-shadow);border:1px solid #ddd2c3b8;border-radius:16px;justify-content:space-between;align-items:center;gap:8px;margin-top:auto;padding:8px;display:flex}.input-bar input{min-width:0;height:40px;color:var(--ink);font:inherit;background:0 0;border:0;outline:0;flex:1;font-size:15px;font-weight:750}.input-bar input::placeholder{color:#998f82}.input-bar button{background:var(--dark);color:#fffdf8;border-radius:12px;place-items:center;width:40px;height:40px;display:grid}.input-bar .send-button{background:var(--coral)}.input-bar .send-button:disabled{cursor:default;opacity:.42}.input-bar .voice-button.listening{background:var(--teal);animation:.9s ease-in-out infinite listen-pulse}.input-listening{color:var(--coral);align-items:center;padding:0 2px 0 4px;display:inline-flex}.input-listening .waveform{display:inline-flex}.input-listening .waveform i{background:var(--coral)}.input-bar.is-listening{border-color:#4f9f925c;box-shadow:0 14px 34px #4f9f9224}.scanner{text-align:center;align-content:center;place-items:center;gap:10px;min-height:238px;padding:22px;display:grid;position:relative;overflow:hidden}.scanner:before{content:"";background:linear-gradient(90deg, var(--coral) 16px, transparent 16px) left top / 54px 2px no-repeat, linear-gradient(180deg, var(--coral) 16px, transparent 16px) left top / 2px 54px no-repeat, linear-gradient(270deg, var(--coral) 16px, transparent 16px) right bottom / 54px 2px no-repeat, linear-gradient(0deg, var(--coral) 16px, transparent 16px) right bottom / 2px 54px no-repeat;border:2px solid #c96f565c;border-radius:14px;position:absolute;inset:18px}.scanner.scanning:after{content:"";background:linear-gradient(90deg, transparent, var(--teal), transparent);height:3px;animation:1s linear infinite scan;position:absolute;top:44px;left:34px;right:34px}.scanner svg,.scanner strong,.scanner p,.scanner button{position:relative}.scanner strong{font-size:22px}.scanner p{max-width:250px;color:var(--muted);margin-bottom:5px;line-height:1.4}.answer-card{margin-top:16px;padding:18px}.answer-card h3{margin:14px 0 9px;font-size:21px}.answer-card p,.workflow-card p,.profile-detail-card p,.tool-detail-hero p,.course-hero p{color:var(--body);font-weight:680;line-height:1.54}.mini-actions{gap:9px;margin-top:14px;display:flex}.course-hero,.tool-detail-hero,.profile-detail-card{padding:22px}.course-hero.yellow{background:linear-gradient(145deg,#fff4c8,#fffdf8)}.course-hero.green{background:linear-gradient(145deg,#dff2dc,#fffdf8)}.course-hero h2,.tool-detail-hero h2,.profile-detail-card h2{margin:12px 0 8px}.progress-ring{background:conic-gradient(var(--coral) 34%, #efe3d6 0);width:92px;height:92px;box-shadow:inset 0 0 0 12px var(--paper);border-radius:50%;align-content:center;place-items:center;margin-top:14px;display:grid}.progress-ring strong{color:var(--coral-dark);font-size:28px}.progress-ring span{color:var(--muted);margin-top:-12px}.lesson-list{gap:10px;margin-top:16px;display:grid}.lesson-list button{background:#fffdf8cc;border:1px solid #ddd2c3b8;padding:12px}.lesson-list button span{width:38px;height:38px;color:var(--coral-dark);background:#f2e5dc;border-radius:10px;place-items:center;font-weight:900;display:grid}.workflow-card{gap:12px;margin-top:16px;padding:18px;display:grid}.workflow-card label{color:var(--muted);font-weight:900}.upload-zone{width:100%;min-height:112px;color:var(--coral-dark);background:#f8eee5;border:1px dashed #c96f5675;border-radius:14px;align-content:center;place-items:center;gap:8px;font-weight:900;display:grid}.mistake-panel{margin-top:16px;padding:16px}.data-card{margin-bottom:16px}.radar-list{gap:12px;margin-bottom:18px;display:grid}.radar-list div,.chart-row{gap:7px;display:grid}.radar-list i,.chart-row i{background:#eadfd2;border-radius:999px;height:10px;overflow:hidden}.radar-list i:before,.chart-row b{content:"";border-radius:inherit;background:linear-gradient(90deg, var(--coral), var(--teal));height:100%;display:block}.primary-btn{width:100%}.profile-detail-card{text-align:center}.report-grid div{text-align:center;box-shadow:var(--soft-shadow)}.chart-card{margin:16px 0;padding:18px}.chart-card h3{margin-bottom:16px}.chart-row{margin-bottom:12px}.search-box{background:var(--paper);color:#998f82;min-height:52px;box-shadow:var(--soft-shadow);border:1px solid #ddd2c3b8;border-radius:14px;align-items:center;gap:8px;margin-bottom:16px;padding:0 16px;font-weight:800;display:flex}.book-list-row{background:#fffdf8cc;border:1px solid #ddd2c3b8;min-height:96px;margin-bottom:10px;padding:12px}.book-list-row img{object-fit:cover;border-radius:10px;flex:none;width:58px;height:72px;box-shadow:0 8px 18px #4a382229}.result-card{box-shadow:var(--soft-shadow);background:#fffdf8e0;border:1px solid #ddd2c3db;border-radius:16px;gap:12px;padding:20px;display:grid}.result-card>svg{color:var(--coral)}.result-card>img{object-fit:cover;border-radius:14px;width:118px;height:148px;box-shadow:0 12px 26px #4a38222e}.result-card h2{margin:2px 0 0;font-size:24px;line-height:1.22}.result-card p{color:var(--body);margin-bottom:0;font-weight:680;line-height:1.55}.result-list{gap:10px;margin:16px 0;display:grid}.result-list div{background:#fffdf8c7;border:1px solid #ddd2c3b8;border-radius:14px;grid-template-columns:42px 1fr;align-items:center;gap:10px;min-height:58px;padding:10px;display:grid}.result-list span{width:36px;height:36px;color:var(--coral-dark);background:#f2e5dc;border-radius:10px;place-items:center;font-weight:900;display:grid}.result-list strong{line-height:1.35}.ai-teacher-main{height:100%;color:var(--ink);background:radial-gradient(circle at 88% 9%,#c96f5629,#0000 34%),radial-gradient(circle at 10% 58%,#4f9f9224,#0000 35%),linear-gradient(#fffdf8f0,#f7f2ebfa 66%,#efe6dafa);border:0;border-radius:0;padding:28px 22px 126px;overflow-y:auto}.ai-teacher-main:before{content:"";border-radius:inherit;pointer-events:none;background:linear-gradient(#fffdf842,#0000 30%);position:absolute;inset:0}.teacher-main-top{z-index:1;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;display:flex;position:relative}.sketch-menu,.student-mini{min-height:42px;color:var(--body);box-shadow:var(--soft-shadow);background:#fffdf8e0;border:1px solid #ddd2c3d1;border-radius:14px;align-items:center;gap:8px;padding:0 12px;font-size:13px;font-weight:850;display:inline-flex}.student-mini{max-width:184px;color:var(--coral-dark)}.student-mini img{object-fit:cover;border-radius:50%;width:26px;height:26px;box-shadow:0 0 0 2px #efe6daeb}.student-mini span{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.main-teacher-photo{flex:none;width:102px;height:118px;position:relative}.main-teacher-photo img{object-fit:cover;border:1px solid #ddd2c3e6;border-radius:18px;width:100%;height:100%;box-shadow:0 14px 28px #4a382229}.main-teacher-photo i{background:var(--dark);color:#fffdf8;border-radius:50%;place-items:center;width:30px;height:30px;font-style:normal;display:grid;position:absolute;bottom:-7px;right:-7px;box-shadow:0 0 0 5px #fffdf8eb}.teacher-greeting{z-index:1;min-height:218px;box-shadow:var(--soft-shadow);background:linear-gradient(145deg,#fffdf8f5,#f0e6dadb),radial-gradient(circle at 100% 0,#c96f5629,#0000 38%);border:1px solid #ddd2c3e6;border-radius:20px;align-items:center;gap:18px;margin-bottom:14px;padding:18px;display:flex;position:relative}.teacher-greeting p{color:var(--coral-dark);margin:0 0 8px;font-size:28px;font-weight:900;line-height:1}.teacher-greeting h1{max-width:184px;margin:0;font-family:Georgia,Songti SC,STSong,serif;font-size:25px;font-weight:600;line-height:1.24}.teacher-greeting small{color:var(--muted);margin-top:12px;font-size:13px;font-weight:720;line-height:1.42;display:block}.prompt-list{z-index:1;box-shadow:var(--soft-shadow);background:#fffdf8e0;border:1px solid #ddd2c3db;border-radius:18px;gap:8px;margin-bottom:14px;padding:15px;display:grid;position:relative}.prompt-line{min-height:46px;color:var(--body);text-align:left;background:#efe6da85;border-radius:13px;grid-template-columns:1fr 28px;align-items:center;gap:12px;padding:0 11px;font-size:16px;font-weight:820;line-height:1.2;display:grid}.prompt-line svg{color:var(--coral-dark);justify-self:end}.hold-talk{z-index:6;background:var(--dark);color:#fffdf8;border:0;border-radius:16px;justify-content:center;align-items:center;gap:10px;width:100%;min-height:58px;font-size:19px;font-weight:900;display:flex;position:relative;box-shadow:0 16px 34px #1c1a172e}.hold-talk .waveform{display:none}.hold-talk.recording,.hold-talk.thinking,.hold-talk.answered{background:var(--coral);color:#fffdf8}.hold-talk.thinking .waveform,.hold-talk.answered .waveform{display:inline-flex}.hold-talk .waveform i{background:#fffdf8d1}@keyframes glow{0%,to{box-shadow:inset 0 0 0 1px #fffdf838}50%{box-shadow:inset 0 0 0 1px #fffdf86b,0 0 26px #fffdf838}}@keyframes wave{0%,to{opacity:.7;transform:scaleY(.7)}50%{opacity:1;transform:scaleY(1.24)}}@keyframes listen-pulse{0%,to{transform:scale(1);box-shadow:0 0 #4f9f9242}50%{transform:scale(1.04);box-shadow:0 0 0 8px #4f9f9200}}@keyframes scan{0%{transform:translateY(0)}to{transform:translateY(140px)}}@media (width<=430px){.stage{background:var(--canvas);padding:0}.phone{width:100vw;height:100vh;min-height:100vh;box-shadow:none;border:0;border-radius:0}}@media (width<=374px){.screen{padding-left:16px;padding-right:16px}h1{font-size:23px}.teacher-intro{grid-template-columns:74px 1fr;gap:12px}.teacher-avatar{width:74px;height:74px}.book-grid,.tool-grid{gap:10px}.book-card,.tool-card{padding:13px}.ask-actions button{font-size:13px}}