:root{--ink:#17364a;--muted:#718391;--blue:#286287;--teal:#6c9e98;--line:#e3eaf0;--pale:#f1f6fa;--white:#fff;--shadow:0 12px 50px #163d5c08;font-family:"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:#f4f8fb;font-synthesis:none}*{box-sizing:border-box}body{margin:0;min-height:100vh}button,textarea{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,textarea:focus-visible{outline:3px solid #91bbd9;outline-offset:3px}.topbar{max-width:1220px;margin:auto;min-height:100px;padding:26px 28px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;gap:12px;align-items:center;text-decoration:none;color:var(--ink);font-size:18px;letter-spacing:2px}.brand b{font-weight:400;color:var(--blue)}.brand small{display:block;font-size:10px;letter-spacing:2px;color:var(--muted);margin-top:3px}.brand-mark{height:42px;width:42px;background:var(--blue);color:#fff;border-radius:13px;display:grid;place-items:center;font-family:Georgia,serif;font-size:28px;position:relative}.brand-mark span{font-family:serif;font-size:11px;position:absolute;right:5px;top:5px;color:#b4d7d6}.header-actions{display:flex;align-items:center;gap:24px}.role-label{font-size:12px;color:var(--muted);border:1px solid #dce5ec;padding:6px 10px;border-radius:20px}.text-button{border:0;background:none;color:var(--blue);padding:6px 0;font-size:13px}.text-button span{margin-left:8px}.layout{max-width:1220px;margin:0 auto 30px;display:grid;grid-template-columns:320px minmax(0,1fr);gap:48px;padding:10px 28px 0}.eyebrow{font-size:9px;letter-spacing:1.8px;color:var(--teal);font-weight:700;margin:0 0 13px}.mentor-intro h1{font-size:30px;line-height:1.4;letter-spacing:-.5px;margin:0 0 12px;font-weight:650}.mentor-intro h1 span{display:block;font-size:21px;font-weight:400;color:#6f8495;margin-top:2px}.intro-copy{font-size:13px;line-height:1.9;color:var(--muted);margin:0 0 22px}.portrait-card{border-radius:23px;position:relative;overflow:hidden;background:linear-gradient(140deg,#e4eff6,#edf5f7);padding:21px 22px 18px;text-align:center;border:1px solid #e0ebf2}.portrait-label{display:flex;align-items:center;gap:6px;font-size:9px;letter-spacing:1.6px;color:#527c98}.live-dot{width:5px;height:5px;background:var(--teal);border-radius:50%}.portrait-wrap{position:relative;margin:17px auto 10px;width:184px;height:214px;border-radius:100px 100px 20px 20px;overflow:hidden;background:#d6e2e9;box-shadow:0 7px 26px #315b6e12}.portrait-wrap img{display:block;height:100%;width:100%;object-fit:cover;object-position:center 27%;filter:sepia(.08);transition:transform 3s}.portrait-caption h2{font-family:Georgia,"Times New Roman",serif;font-size:22px;font-weight:400;margin:14px 0 6px}.portrait-caption p{font-size:10px;color:#6f8594;margin:0 0 15px}.voice-button{border:1px solid #cbdae4;background:#f7fbfd80;border-radius:24px;padding:7px 15px;font-size:11px;color:#3d6983;display:inline-flex;align-items:center;gap:9px}.portrait-waves{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:none;gap:3px;align-items:center;background:#17364aba;padding:7px 12px;height:32px;border-radius:20px}.portrait-waves i{height:9px;width:3px;background:#fff;border-radius:2px;animation:wave .7s ease-in-out infinite}.portrait-waves i:nth-child(2){animation-delay:.1s}.portrait-waves i:nth-child(3){animation-delay:.25s}.portrait-waves i:nth-child(4){animation-delay:.15s}.portrait-waves i:nth-child(5){animation-delay:.35s}.speaking .portrait-waves{display:flex}.speaking .portrait-wrap img{transform:scale(1.03)}@keyframes wave{50%{height:20px}}.learning-map{margin-top:24px}.map-label{font-size:11px;color:var(--muted);margin:0 0 11px}.topic-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.topic-grid button{border:1px solid #e1e9ef;background:#fff9;border-radius:10px;color:#547186;padding:9px 8px;font-size:11px;transition:.2s}.topic-grid button:hover{background:#e7f0f6;border-color:#c7dbe9}.course-credit{font-size:10px;line-height:1.9;color:#8a9ba8;margin:24px 0 0}.conversation{background:var(--white);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;height:min(790px,calc(100dvh - 135px));min-height:600px;overflow:hidden}.conversation-header{display:flex;align-items:center;justify-content:space-between;padding:24px 30px 21px;border-bottom:1px solid #edf1f4;gap:15px}.availability{font-size:10px;color:#7b8e9d;display:flex;align-items:center;gap:6px}.availability>span{width:5px;height:5px;background:#7bab9c;border-radius:50%}.conversation-header h2{font-size:19px;font-weight:600;margin:8px 0 0;letter-spacing:.1px}.quiz-button{font-size:11px;border:1px solid #e2e9ed;border-radius:20px;color:#647e8f;background:#fbfdfe;padding:8px 12px;white-space:nowrap}.quiz-button:hover{border-color:#9bb9cd;background:#f3f8fb}.messages{overflow-y:auto;flex:1;padding:25px 30px;scroll-behavior:smooth;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#d6e3ec transparent}.message{margin-bottom:25px;max-width:96%;min-width:0}.message-meta{display:flex;align-items:center;gap:7px;font-size:10px;color:#8c9da9;margin-bottom:10px}.mini-avatar{display:grid;place-items:center;background:#e8f0f5;color:#4e758e;font:13px Georgia,serif;width:23px;height:23px;border-radius:8px}.bubble{font-size:14px;line-height:1.95;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}.bubble p{margin:0 0 12px}.message.user{margin-left:auto;max-width:88%}.user .bubble{background:#edf4f9;border:1px solid #e5eef5;border-radius:16px 16px 4px 16px;padding:13px 17px;color:#31576f}.user .message-meta{justify-content:flex-end;margin-bottom:6px}.starter-questions{margin:26px 0 20px;padding:0 0 0 30px;display:flex;flex-direction:column;gap:9px;max-width:510px}.starter-questions>span{font-size:10px;color:#99a9b4;margin-bottom:4px}.starter-questions button{text-align:left;display:flex;justify-content:space-between;gap:12px;border:1px solid #e8eef3;background:#fbfdfe;border-radius:11px;padding:12px 14px;color:#58778b;font-size:12px;line-height:1.6}.starter-questions button:hover{background:#f0f6fa;border-color:#cbdde9}.starter-questions b{font-weight:400;color:#91acbf}.composer-area{padding:17px 24px 16px;border-top:1px solid #f1f4f6;background:linear-gradient(#fff,#fbfdfe)}.composer{border:1px solid #dce7ee;border-radius:15px;padding:13px 14px 10px;background:#fff;transition:border-color .2s}.composer:focus-within{border-color:#8bb0c9;box-shadow:0 0 0 3px #e8f2f980}.composer textarea{display:block;border:0;resize:none;outline:0;width:100%;color:#254b63;font-size:13px;line-height:1.7;height:49px;max-height:125px;background:transparent}.composer textarea::placeholder{color:#a0afb9}.composer textarea:focus-visible{outline:0}.composer-bottom{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:8px}.composer-bottom>span{font-size:9px;color:#a0b1bd}.composer-bottom>div{display:flex;gap:8px;align-items:center}#send{display:flex;align-items:center;gap:16px;font-size:11px;color:#fff;background:#286287;border:0;border-radius:9px;padding:9px 13px}#send:hover:not(:disabled){background:#1f5275}#send span{font-size:16px;line-height:1}.composer-note{display:flex;justify-content:space-between;margin:9px 2px 0;font-size:9px;color:#9aaab6}.mic-button{border:0;background:#f3f7fa;border-radius:8px;width:31px;height:31px;color:#6a879b}.mic-button.listening{background:#e8d4d4}.pending{color:#95a8b5;font-size:12px}.pending::after{content:"";display:inline-block;width:4px;height:4px;border-radius:50%;background:#90afc1;margin-left:8px;animation:blink 1s infinite}@keyframes blink{50%{opacity:.25}}.answer-actions{display:flex;align-items:center;gap:16px;margin-top:10px}.answer-actions button{border:0;background:transparent;color:#7b92a3;font-size:10px;padding:3px 0}.source-list{margin:13px 0 0;padding-top:12px;border-top:1px solid #edf2f5;display:flex;gap:6px 12px;flex-wrap:wrap}.source-list a{font-size:10px;color:#6b94ad;text-decoration:none;line-height:1.6}.source-list a:hover{text-decoration:underline}.error-text{color:#a56f53;font-size:12px}.quiz-card{margin:14px 24px 0;background:#f1f7f7;border:1px solid #dcebea;border-radius:14px;padding:14px 18px}.quiz-top{display:flex;justify-content:space-between;align-items:center}.quiz-top .eyebrow{margin:0;font-size:9px}.quiz-card h3{font-size:13px;line-height:1.7;font-weight:600;margin:10px 0}.icon-button{background:none;border:0;color:#83a4a0;font-size:18px;padding:0 4px}#quiz-options{display:flex;flex-wrap:wrap;gap:6px}#quiz-options button{background:#fff;border:1px solid #dbe8e7;border-radius:8px;color:#607f7c;font-size:11px;padding:7px 10px;text-align:left}#quiz-options button.selected{border-color:#88b5ac;background:#e6f2ee}#quiz-feedback{font-size:11px;color:#668c85;line-height:1.7;margin:10px 0 0}#quiz-feedback:empty{display:none}#quiz-next{font-size:10px;margin-top:7px}.toast{position:fixed;left:50%;bottom:30px;transform:translateX(-50%);background:#23475eeb;color:#fff;font-size:12px;border-radius:12px;padding:12px 18px;z-index:20;max-width:90vw;text-align:center}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(min-width:1400px){.layout{padding-top:18px}.mentor-intro h1{font-size:33px}.portrait-wrap{height:237px;width:202px}}@media(max-width:1000px){.layout{grid-template-columns:260px minmax(0,1fr);gap:24px;padding-left:20px;padding-right:20px}.topbar{padding-left:20px;padding-right:20px}.mentor-intro h1{font-size:26px}.portrait-card{padding-left:15px;padding-right:15px}.portrait-caption h2{font-size:21px}.messages,.conversation-header{padding-left:22px;padding-right:22px}.starter-questions{padding-left:0}.intro-copy{font-size:12px}}@media(max-width:700px){.topbar{min-height:72px;padding:16px 18px}.brand{font-size:15px;gap:9px}.brand-mark{height:34px;width:34px;font-size:23px;border-radius:10px}.brand small{font-size:8px}.role-label{display:none}.text-button{font-size:11px}.layout{display:flex;flex-direction:column;gap:14px;padding:0 14px 16px;margin:0}.mentor-panel{position:relative;padding:0 4px}.mentor-intro .eyebrow,.mentor-intro .intro-copy,.learning-map,.course-credit{display:none}.mentor-intro h1{font-size:22px;line-height:1.6;margin:0 0 12px}.mentor-intro h1 span{display:inline;font-size:11px;margin-left:10px;letter-spacing:0}.portrait-card{display:grid;grid-template-columns:68px 1fr auto;grid-template-rows:auto auto;text-align:left;padding:11px 13px;gap:0 12px;border-radius:15px;align-items:center}.portrait-wrap{grid-column:1;grid-row:1/3;width:68px;height:76px;margin:0;border-radius:12px}.portrait-label{grid-column:2;grid-row:1;align-self:end;margin-bottom:5px;font-size:8px;letter-spacing:1px}.portrait-caption{grid-column:2;grid-row:2;align-self:start}.portrait-caption h2{font-size:17px;margin:0 0 4px}.portrait-caption p{font-size:8px;margin:0;line-height:1.5}.voice-button{grid-column:3;grid-row:1/3;padding:8px;width:32px;height:32px;justify-content:center}.voice-button #voice-label{display:none}.portrait-waves{bottom:3px;padding:3px 7px;height:20px}.portrait-waves i{width:2px}.conversation{border-radius:18px;min-height:520px;height:calc(100dvh - 224px);max-height:800px}.conversation-header{padding:17px 18px 14px}.conversation-header h2{font-size:17px;margin-top:6px}.availability{font-size:9px}.quiz-button{font-size:10px;padding:7px 10px}.messages{padding:19px 18px}.message{max-width:100%;margin-bottom:21px}.bubble{font-size:13px;line-height:1.9}.message.user{max-width:92%}.user .bubble{padding:11px 13px}.starter-questions{padding:0;margin-top:19px}.starter-questions button{font-size:11px;padding:11px 12px}.composer-area{padding:11px 12px 12px}.composer{padding:11px 12px 9px}.composer textarea{font-size:14px;height:47px}.composer-bottom>span{font-size:8px}.composer-note{font-size:8px}.quiz-card{margin:10px 12px 0;padding:12px}.quiz-card h3{font-size:12px}#quiz-options button{font-size:10px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;animation:none!important;transition:none!important}}@media(max-width:370px){.mentor-intro h1 span{display:block;margin:0}.portrait-caption h2{font-size:15px}.portrait-caption p{max-width:155px}.composer-bottom>span{display:none}}
.portrait-wrap.digital-stage{width:236px;height:250px;border-radius:18px;background:transparent;box-shadow:none;overflow:hidden;margin-top:10px}.avatar-canvas,#avatar{display:block;width:100%;height:100%;object-fit:contain;animation:avatar-breathe 5s ease-in-out infinite;transform-origin:50% 90%}@keyframes avatar-breathe{50%{transform:translateY(-2px) scale(1.008)}}@media(max-width:1000px) and (min-width:701px){.portrait-wrap.digital-stage{width:204px;height:222px}}@media(max-width:700px){.portrait-wrap.digital-stage{width:68px;height:76px;margin:0;border-radius:10px}}

/* Keep the digital human large enough to see facial animation on phones. */
.portrait-card{padding:18px 12px 20px}
.portrait-label{margin-left:8px}
.portrait-wrap.digital-stage{width:100%;max-width:302px;height:310px;margin:10px auto 0;border-radius:14px}
.portrait-caption h2{margin-top:8px}
.voice-button{padding:10px 20px;font-size:12px}
@media(max-width:1000px) and (min-width:701px){.portrait-wrap.digital-stage{height:260px}}
@media(max-width:700px){
 .portrait-card{display:flex;flex-direction:column;text-align:center;padding:14px 14px 17px;gap:0;border-radius:20px}
 .portrait-label{align-self:center;margin:0 0 4px;font-size:9px}
 .portrait-wrap.digital-stage{width:min(100%,300px);height:276px;margin:0 auto;border-radius:12px}
 .portrait-caption{align-self:center}
 .portrait-caption h2{font-size:22px;margin:7px 0 5px}
 .portrait-caption p{font-size:10px;max-width:none;margin:0 0 13px}
 .voice-button{width:auto;height:auto;min-height:38px;padding:9px 20px;gap:9px;font-size:12px}
 .voice-button #voice-label{display:inline}
 .portrait-waves{bottom:9px;height:28px;padding:6px 12px}
 .portrait-waves i{width:3px}
 .conversation{height:600px;min-height:480px;max-height:none}
}