:root{--bg:#faf8f3;--paper:#fffefb;--ink:#273e35;--muted:#788279;--green:#426951;--green-dark:#31543e;--line:#e6e7de;--peach:#f6decf;--mint:#e5ece2;--lavender:#e9e5f0;--shadow:0 12px 40px #293e3510;font-family:"Segoe UI",-apple-system,BlinkMacSystemFont,Arial,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.5;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #9bb594;outline-offset:4px}button{color:inherit}a{color:var(--green)}.shell{max-width:1150px;margin:0 auto;padding:0 42px 55px}.topbar{height:94px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);gap:20px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}.brand img{width:42px;height:42px}.brand strong{font-family:Georgia,serif;font-size:21px;font-weight:500;letter-spacing:-.5px}.brand small{display:block;font-size:10px;letter-spacing:2px;text-transform:uppercase;color:var(--muted);margin-top:4px}.nav{display:flex;gap:6px;align-items:center}.nav button{border:0;background:none;padding:10px 17px;border-radius:30px;font-size:13px;color:var(--muted)}.nav button.active{background:var(--mint);color:var(--ink)}.nav .settings-button{padding:10px;font-size:20px;margin-left:9px}.intro{padding:45px 0 25px;display:flex;justify-content:space-between;align-items:flex-end;gap:15px}.eyebrow{font-size:10px;letter-spacing:2.3px;font-weight:650;color:var(--muted);text-transform:uppercase}.intro h1{font-family:Georgia,"Times New Roman",serif;font-size:43px;font-weight:400;letter-spacing:-1.4px;line-height:1.15;margin:12px 0}.intro p{color:var(--muted);font-size:14px;line-height:1.6;margin:0}.daily-note{display:flex;align-items:center;gap:9px;border:1px solid var(--line);border-radius:30px;padding:11px 16px;font-size:12px;white-space:nowrap;background:var(--paper)}.daily-note span{font-size:16px}.hero{display:grid;grid-template-columns:1.1fr .9fr;background:var(--mint);border-radius:26px;overflow:hidden;min-height:290px;position:relative}.hero-copy{padding:34px 38px;position:relative;z-index:1}.hero h2{font-family:Georgia,serif;font-weight:400;font-size:30px;letter-spacing:-.7px;margin:14px 0}.hero p{font-size:14px;line-height:1.7;max-width:315px;color:#68766b;margin:0 0 24px}.tag{display:inline-flex;align-items:center;gap:7px;font-size:10px;letter-spacing:1px;text-transform:uppercase;color:#5d7760}.tag:before{content:"";width:5px;height:5px;background:#628361;border-radius:50%}.primary{background:var(--green);color:white;border:0;padding:13px 22px;border-radius:12px;font-size:13px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:45px}.primary:hover{background:var(--green-dark)}.primary svg{width:15px;height:15px}.secondary{background:var(--paper);border:1px solid var(--line);padding:12px 18px;border-radius:12px;font-size:13px}.text-button{border:0;background:none;font-size:12px;text-decoration:underline;text-underline-offset:4px;color:var(--muted);padding:10px}.hero-art{display:flex;align-items:center;justify-content:center;position:relative;min-height:245px}.hero-art:before{content:"";position:absolute;width:235px;height:235px;border-radius:50%;background:#d6e2d2}.hero-art:after{content:"你好";position:absolute;top:44px;right:37px;padding:14px 17px;background:#fffefbd9;border-radius:18px 18px 18px 4px;font-size:21px;letter-spacing:4px;transform:rotate(6deg);box-shadow:var(--shadow)}.buddy{width:150px;height:170px;position:relative;z-index:1;display:inline-block;flex-shrink:0}.buddy svg{width:100%;height:100%;filter:drop-shadow(0 10px 12px #43534315)}.buddy.small{width:48px;height:53px}.buddy.medium{width:86px;height:98px}.buddy.large{width:150px;height:173px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin:33px 0 17px;gap:10px}.section-heading h2{font-size:16px;font-weight:600;margin:0}.section-heading small{font-size:12px;color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.lesson-card{display:flex;flex-direction:column;align-items:flex-start;text-align:left;padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--paper);transition:transform .2s,box-shadow .2s;min-height:192px}.lesson-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.lesson-icon{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:13px;font-size:23px;background:var(--peach);margin-bottom:18px}.lesson-card h3{font-size:15px;font-weight:600;line-height:1.45;margin:0 0 7px}.lesson-card p{font-size:12px;color:var(--muted);line-height:1.65;margin:0}.lesson-card footer{display:flex;align-items:center;justify-content:space-between;width:100%;font-size:10px;color:var(--muted);margin-top:auto;padding-top:18px}.peach{background:var(--peach)}.mint{background:var(--mint)}.lavender{background:var(--lavender)}.bottom-note{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:12px;margin:30px 0 0;gap:8px}.filters{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 20px}.filters button{background:none;border:1px solid var(--line);border-radius:30px;padding:9px 15px;font-size:12px;color:var(--muted)}.filters button.active{background:var(--green);color:white;border-color:var(--green)}.banner{border:1px solid #ded9c7;background:#f7f1df;padding:15px 20px;border-radius:14px;font-size:13px;line-height:1.6;margin:20px 0;display:flex;justify-content:space-between;gap:15px;align-items:center}.banner p{margin:0}.banner.error{background:#f9e9e4;border-color:#ead1c6}.call-shell{max-width:790px;margin:0 auto}.call-top{display:flex;align-items:center;justify-content:space-between;padding:24px 0 18px}.call-top button{border:0;background:none;padding:8px 0;font-size:12px;color:var(--muted)}.call-title{display:flex;align-items:center;gap:10px}.call-title strong{display:block;font-size:15px}.call-title small{font-size:11px;color:var(--muted)}.call-box{background:var(--paper);border:1px solid var(--line);border-radius:24px;overflow:hidden;box-shadow:var(--shadow)}.call-stage{background:var(--mint);display:flex;flex-direction:column;align-items:center;padding:24px 20px 19px;position:relative}.call-stage .buddy{margin:0 0 2px}.call-stage h2{font-family:Georgia,serif;font-size:22px;font-weight:400;margin:0 0 6px}.call-stage .role{font-size:11px;color:#6b7e6c}.status{display:flex;gap:6px;align-items:center;color:#657964;font-size:10px;margin-top:14px}.status .dot{width:6px;height:6px;background:#7a9c74;border-radius:50%}.speaking .buddy{animation:breathe 1.2s ease-in-out infinite}.speaking .dot,.listening .dot{animation:pulse 1s infinite}.call-speed{position:absolute;top:16px;right:17px;background:#fffefb9e;border:0;padding:8px 11px;border-radius:20px;font-size:10px}.mission{display:flex;justify-content:center;gap:18px;padding:14px 16px;border-bottom:1px solid var(--line);font-size:10px;flex-wrap:wrap}.mission span{display:flex;align-items:center;gap:5px;color:var(--muted)}.mission .done{color:var(--green)}.mission i{border:1px solid #bbc6b7;width:14px;height:14px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-style:normal;font-size:9px}.mission .done i{background:var(--green);color:white;border:0}.conversation{padding:24px 28px;min-height:230px;max-height:440px;overflow:auto;scroll-behavior:smooth}.message{margin-bottom:20px}.message:last-child{margin-bottom:0}.message-label{font-size:9px;letter-spacing:1.6px;text-transform:uppercase;color:var(--muted);margin:0 0 9px;display:flex;align-items:center;gap:10px}.message .zh{font-size:24px;line-height:1.75;letter-spacing:1px;margin:0}.message .pinyin{font-size:13px;color:#8a816c;line-height:1.7;margin:4px 0}.message .translation{font-size:13px;color:var(--muted);line-height:1.6;margin:5px 0}.message.user{background:#f3f5ef;border-radius:13px;padding:14px 18px;max-width:85%;margin-left:auto}.message.user p{font-size:16px;line-height:1.6;margin:0;word-break:break-word}.message .replay{border:0;background:none;color:var(--green);padding:4px;font-size:12px}.feedback{font-size:12px;color:#638066;line-height:1.7;padding:9px 13px;border-left:2px solid #becfb6;background:#f4f7ee;margin:10px 0}.help-row{display:flex;gap:8px;padding:0 28px 20px;flex-wrap:wrap}.help-row button{border:1px solid var(--line);background:none;font-size:11px;padding:8px 12px;border-radius:9px;display:flex;align-items:center;gap:6px}.help-row button.active{background:var(--mint)}.hint-card{background:#f9f0e4;border:1px solid #ebdfca;border-radius:12px;padding:16px;margin:0 28px 18px;line-height:1.6}.hint-card .eyebrow{font-size:9px}.hint-card .zh{font-size:20px;margin:9px 0 2px}.hint-card .pinyin{font-size:12px;color:#877f69}.hint-card .translation{font-size:12px;color:var(--muted)}.hint-card button{margin-top:10px}.composer{padding:18px 28px 22px;border-top:1px solid var(--line);background:#fdfcf8}.compose-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.compose-top small{font-size:11px;color:var(--muted)}.language-switch{display:flex;gap:0;border:1px solid var(--line);border-radius:9px;overflow:hidden}.language-switch button{border:0;background:none;padding:6px 10px;font-size:10px;color:var(--muted)}.language-switch button.active{background:var(--mint);color:var(--ink)}.input-line{display:flex;gap:9px;align-items:flex-end}.input-line textarea{resize:none;border:1px solid var(--line);border-radius:12px;background:var(--paper);width:100%;min-height:49px;max-height:120px;padding:13px 14px;font-size:14px;color:var(--ink)}.mic{border:1px solid var(--line);border-radius:12px;background:var(--paper);width:49px;height:49px;flex-shrink:0;font-size:21px;display:grid;place-items:center}.mic.listening{background:#f4d5c2;border-color:#dba989}.send{height:49px;width:49px;padding:0;flex-shrink:0}.input-note{font-size:10px;color:var(--muted);line-height:1.5;margin:10px 0 0;text-align:center}.typing{font-size:12px;color:var(--muted);padding:10px;display:flex;align-items:center;gap:10px}.typing span{display:flex;gap:4px}.typing i{width:4px;height:4px;background:#7a9276;border-radius:50%;animation:pulse 1.2s infinite}.typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}.error-box{margin:0 28px 18px;background:#f9e9e4;padding:12px 15px;border-radius:10px;font-size:12px;line-height:1.6}.call-footer{text-align:center;font-size:11px;color:var(--muted);line-height:1.7;margin:18px}.call-footer button{background:none;border:0;color:var(--green);font-size:11px;text-decoration:underline;text-underline-offset:3px}.prep{max-width:640px;margin:30px auto}.prep-head{text-align:center}.prep-head h1{font-family:Georgia,serif;font-size:33px;font-weight:400;margin:13px 0}.prep-head p{font-size:14px;color:var(--muted);line-height:1.7;max-width:440px;margin:0 auto}.prep .buddy{margin-bottom:15px}.phrase-stack{display:grid;gap:10px;margin:25px 0}.phrase-card{padding:18px 20px;border:1px solid var(--line);border-radius:14px;background:var(--paper);display:flex;justify-content:space-between;align-items:center;gap:20px}.phrase-card .zh{font-size:20px;line-height:1.6;margin:0}.phrase-card .pinyin{font-size:12px;color:#8a816c;margin:3px 0}.phrase-card .translation{font-size:12px;color:var(--muted);margin:4px 0}.icon-button{width:36px;height:36px;border:1px solid var(--line);background:none;border-radius:50%;display:grid;place-items:center;flex-shrink:0}.prep-actions{display:flex;gap:12px;justify-content:center;margin:24px 0}.prep .note{text-align:center;font-size:12px;color:var(--muted);line-height:1.7}.details{margin:20px 0;border:1px solid var(--line);padding:15px 18px;border-radius:13px;background:var(--paper)}.details summary{cursor:pointer;font-size:12px;color:var(--muted)}.details p{font-size:12px;color:var(--muted);line-height:1.7}.settings{max-width:700px;margin:36px auto}.settings h1,.review-page h1{font-family:Georgia,serif;font-size:35px;font-weight:400;letter-spacing:-.6px}.settings-card{padding:25px;border:1px solid var(--line);border-radius:18px;background:var(--paper);margin:16px 0}.settings-card h2{font-size:15px;margin:0 0 8px}.settings-card p{font-size:12px;color:var(--muted);line-height:1.75}.field{display:flex;flex-direction:column;gap:8px;margin:18px 0}.field label{font-size:12px;color:var(--muted)}.field input,.field select{padding:11px 12px;background:var(--bg);color:var(--ink);border:1px solid var(--line);border-radius:9px;width:100%}.field.inline{flex-direction:row;align-items:center;justify-content:space-between}.field.inline input[type=checkbox]{width:18px;height:18px;accent-color:var(--green)}.account-pill{display:inline-flex;align-items:center;gap:7px;background:var(--mint);padding:8px 12px;border-radius:20px;font-size:11px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.connection-button{display:flex;align-items:center;gap:10px;padding:13px 20px;border:1px solid #ccc;border-radius:9px;background:white;font-size:14px;color:#222}.connection-button svg{width:20px;height:20px}.share-link{padding:12px;background:var(--bg);border:1px solid var(--line);border-radius:8px;overflow-wrap:anywhere;font-size:11px;line-height:1.7;margin:15px 0}.review-page{max-width:730px;margin:35px auto}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:25px 0}.stat{border:1px solid var(--line);border-radius:14px;padding:22px;background:var(--paper)}.stat strong{display:block;font-family:Georgia,serif;font-size:30px;font-weight:400;margin-bottom:7px}.stat small{font-size:11px;color:var(--muted)}.empty{border:1px dashed #d1d8cb;border-radius:20px;padding:40px;text-align:center;color:var(--muted);line-height:1.7;font-size:14px}.empty .buddy{display:block;margin:0 auto 15px}.review-highlight{background:var(--mint);padding:26px;border-radius:18px;line-height:1.8;font-size:14px}.review-highlight h2{font-size:19px;margin-top:0}.review-highlight ul{padding-left:20px}.saved-list{display:grid;gap:12px}.saved-actions{display:flex;gap:7px}.saved-actions button{width:34px;height:34px}.session-row{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding:16px 0;font-size:13px}.session-row small{color:var(--muted);font-size:11px}.toast{position:fixed;bottom:25px;left:50%;transform:translate(-50%,15px);max-width:calc(100% - 32px);width:max-content;background:var(--ink);color:white;font-size:12px;line-height:1.6;border-radius:12px;padding:13px 20px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.2s;z-index:100}.toast.show{opacity:1;transform:translate(-50%,0)}dialog{border:1px solid var(--line);border-radius:22px;background:var(--paper);padding:30px;max-width:440px;width:calc(100% - 36px);color:var(--ink);box-shadow:var(--shadow)}dialog::backdrop{background:#1a30285e;backdrop-filter:blur(3px)}dialog h2{font-family:Georgia,serif;font-size:27px;font-weight:400;line-height:1.3;margin-top:0}dialog p{font-size:13px;color:var(--muted);line-height:1.8}dialog .primary{width:100%;margin-top:15px}.pair-page{min-height:80vh;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;max-width:450px;margin:auto;padding:30px}.pair-page h1{font-family:Georgia,serif;font-size:38px;font-weight:400}.pair-page p{font-size:14px;color:var(--muted);line-height:1.8}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.hidden{display:none!important}@keyframes breathe{50%{transform:translateY(-3px)}}@keyframes pulse{50%{opacity:.25}}
@media(max-width:760px){.shell{padding:0 22px 35px}.topbar{height:80px}.brand strong{font-size:19px}.brand img{width:36px}.nav button{padding:9px 12px;font-size:12px}.intro{padding-top:30px}.intro h1{font-size:34px}.daily-note{display:none}.hero{min-height:270px;grid-template-columns:1.15fr .85fr}.hero-copy{padding:26px}.hero h2{font-size:27px}.hero p{font-size:13px}.hero-art:before{width:180px;height:180px}.hero-art:after{right:16px;top:37px;font-size:17px;padding:10px}.hero-art .buddy{width:130px}.grid{grid-template-columns:repeat(2,1fr);gap:12px}.lesson-card{padding:20px}.call-top{padding-top:20px}.conversation{padding:20px}.composer{padding:16px 20px}.help-row{padding:0 20px 17px}.hint-card,.error-box{margin-left:20px;margin-right:20px}.prep{margin-top:25px}.settings-card{padding:22px}.brand small{font-size:9px}}
@media(max-width:480px){.shell{padding:0 17px 30px}.topbar{height:74px;gap:5px}.brand{gap:7px}.brand strong{font-size:17px}.brand small{font-size:8px;letter-spacing:1.5px}.brand img{width:30px}.nav{gap:0}.nav button{padding:8px 10px;font-size:11px}.nav .settings-button{margin-left:2px;font-size:18px;padding:8px}.intro h1{font-size:32px;line-height:1.18}.intro p{font-size:12px}.hero{grid-template-columns:1fr;min-height:0}.hero-copy{padding:26px 24px 23px;max-width:80%}.hero h2{font-size:27px}.hero p{max-width:235px;margin-bottom:19px}.hero-art{position:absolute;right:-9px;bottom:18px;min-height:110px;width:105px}.hero-art:before{width:100px;height:100px}.hero-art:after{display:none}.hero-art .buddy{width:83px;height:110px}.hero .primary{position:relative;z-index:2;padding:12px 16px}.grid{gap:10px}.lesson-card{padding:17px;min-height:198px}.lesson-card h3{font-size:13px}.lesson-card p{font-size:11px}.lesson-icon{width:38px;height:38px;font-size:21px;margin-bottom:13px}.section-heading h2{font-size:14px}.section-heading small{font-size:10px}.call-shell{margin:0 -6px}.call-box{border-radius:18px}.call-stage{padding-top:20px}.call-stage .buddy{width:100px;height:116px}.call-stage h2{font-size:20px}.mission{gap:10px;font-size:9px}.conversation{min-height:210px;max-height:360px;padding:18px}.message .zh{font-size:22px}.composer{padding:15px}.help-row{padding:0 15px 15px;gap:6px}.help-row button{padding:8px 10px;font-size:10px}.hint-card,.error-box{margin-left:15px;margin-right:15px}.compose-top small{font-size:10px}.input-note{font-size:9px}.call-footer{margin:15px 9px}.stats{gap:8px}.stat{padding:16px 12px}.stat strong{font-size:26px}.stat small{font-size:10px}.prep-head h1{font-size:28px}.prep-head p{font-size:13px}.banner{padding:13px;align-items:flex-start;font-size:12px}.banner .secondary{padding:9px 12px;white-space:nowrap}.phrase-card{padding:16px}.phrase-card .zh{font-size:18px}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.call-title .lesson-icon{margin:0}.review-page .bottom-note{justify-content:flex-start;margin:0}.help-row button,.replay,.icon-button,.language-switch button,.nav button,.text-button{min-height:44px}.hint-card .text-button{margin-right:8px}
.live-guide{margin:0 20px 20px;font-size:12px;color:var(--muted)}.live-guide summary{cursor:pointer;padding:10px 0}.live-guide .phrase-card{margin-top:8px;padding:12px 16px}.live-guide .phrase-card .zh{font-size:18px}.pair-page form{width:100%;max-width:320px;text-align:left}.pair-page form .primary{width:100%}#chatgpt-prompt{width:100%;margin:12px 0;padding:12px;box-sizing:border-box;border:1px solid var(--line);border-radius:9px;background:var(--bg);color:var(--ink);font:inherit;font-size:12px}#provider-description{margin:0}.settings select{max-width:100%}

.pace-bar{position:sticky;top:0;z-index:25;display:flex;gap:22px;align-items:center;background:var(--bg);padding:12px 2px 10px;border-bottom:1px solid var(--line);box-shadow:0 5px 12px #273e3508}.pace-title{min-width:112px;font-size:11px}.pace-title label{display:block;color:var(--muted)}.pace-title output{display:block;margin-top:4px;font-weight:600}.pace-control{width:100%;max-width:480px}.pace-control input{display:block;width:100%;height:28px;margin:0;accent-color:var(--green);cursor:pointer}.pace-stops{display:flex;justify-content:space-between;font-size:9px;color:var(--muted);pointer-events:none}.pace-stops span{width:20%;text-align:center}.pace-stops span:first-child{text-align:left}.pace-stops span:last-child{text-align:right}.generate-phrases{margin:0 0 12px;font-size:12px}.phrase-audio-status{font-size:10px;color:var(--muted);margin-top:8px}.phrase-audio-status .text-button{font-size:10px;padding:2px 4px;min-height:32px}.spoken-line{display:flex;align-items:center;gap:10px;margin:6px 0}.spoken-line p{margin:0;flex:1;font-size:21px;line-height:1.7;overflow-wrap:anywhere}.phrase-plus{font-size:20px;color:var(--green);min-width:36px}.caption-details summary{font-size:10px;color:var(--muted);cursor:pointer}.caption-details p{font-size:13px;line-height:1.6}.live-guide .phrase-stack{margin:10px 0}.saved-actions{flex-shrink:0}
@media(max-width:480px){.pace-bar{gap:12px;padding:8px 0}.pace-title{min-width:85px;font-size:10px}.pace-stops{font-size:8px}.pace-control input{height:32px}.spoken-line p{font-size:19px}.phrase-plus{min-width:34px}.phrase-card{gap:10px}.phrase-card>div:first-child{min-width:0;overflow-wrap:anywhere}.message-label{flex-wrap:wrap}}

.spoken-text{flex:1;min-width:0}.spoken-text p.translation{font-size:14px;line-height:1.55;color:var(--muted);margin-top:4px}.subtitle-pending{font-size:11px!important}.topic-audio-status{display:block;font-size:10px;color:var(--muted);margin-top:6px}.spoken-line{align-items:flex-start}.spoken-line .phrase-plus{margin-top:3px}
