:root{--ink:#17283f;--muted:#6e7989;--paper:#f4f1e9;--card:#fffdf8;--blue:#2e68a8;--blue-dark:#174b83;--amber:#b77825;--green:#397b5b;--red:#b84952;--line:#e3ded2;--shadow:0 24px 65px rgba(30,47,67,.12);--r:22px;--font:ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;--serif:"Songti SC","STSong",serif}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}.hidden{display:none!important}button,input,textarea{font:inherit}.skip-link{position:fixed;z-index:100;left:16px;top:-60px;background:#fff;padding:12px 16px;color:var(--ink)}.skip-link:focus{top:12px}.login-shell{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr}.login-art{position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#15395f;color:#fff}.login-art:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.025) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.025) 1px,transparent 1px);background-size:38px 38px}.training-mark{position:relative;z-index:1;display:flex;align-items:center;gap:22px;font-family:var(--serif);font-size:74px}.training-mark i{display:block;width:1px;height:110px;background:#d6a85f;transform:rotate(18deg)}.training-mark b{font-weight:400;transform:translateY(32px)}.login-art p{position:relative;z-index:1;margin-top:70px;font-family:var(--serif);font-size:22px;line-height:1.8;letter-spacing:.25em;text-align:center}.orb{position:absolute;border-radius:50%;filter:blur(1px)}.orb-a{width:460px;height:460px;background:#2f6f9d;opacity:.35;left:-180px;top:-160px}.orb-b{width:320px;height:320px;border:1px solid rgba(226,177,101,.34);right:-80px;bottom:-100px}.login-panel{display:flex;flex-direction:column;justify-content:center;padding:8vw;max-width:720px;background:var(--card)}.mini-brand{display:flex;align-items:baseline;gap:12px}.mini-brand span{font-family:var(--serif);font-size:24px}.mini-brand small,.brand-button small{font-size:9px;letter-spacing:.18em;color:var(--muted)}.login-copy{margin:10vh 0 36px}.kicker{color:var(--blue);font-size:13px;font-weight:700;letter-spacing:.16em}.login-copy h1{margin:8px 0 14px;font:400 clamp(34px,4vw,54px)/1.2 var(--serif)}.login-copy>p:last-child{color:var(--muted)}.login-form{display:grid;gap:22px}.login-form label{font-size:13px;font-weight:700}.input-wrap{margin-top:9px;border-bottom:1px solid #b8b7b2;display:flex;align-items:center;gap:12px;transition:.2s}.input-wrap:focus-within{border-color:var(--blue);box-shadow:0 2px 0 var(--blue)}.input-wrap span{color:var(--muted)}.input-wrap input{width:100%;padding:13px 0;border:0;outline:0;background:transparent;font-size:17px;color:var(--ink)}.text-button,.ghost-button,.brand-button{border:0;background:transparent;color:var(--blue);cursor:pointer}.primary-button{border:0;border-radius:14px;background:var(--ink);color:white;display:flex;justify-content:space-between;padding:17px 20px;font-weight:700;cursor:pointer;box-shadow:0 12px 26px rgba(23,40,63,.18);transition:.2s}.primary-button:hover{transform:translateY(-2px);background:#243a56}.primary-button:disabled{opacity:.55;transform:none}.demo-tip,.form-error{font-size:12px;color:var(--muted)}.form-error{color:var(--red);min-height:16px}.app-shell{min-height:100vh;padding-bottom:88px}.topbar{height:78px;padding:0 max(24px,calc((100% - 1180px)/2));display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid rgba(181,176,165,.55);background:rgba(244,241,233,.88);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}.brand-button{display:flex;align-items:center;gap:10px;text-align:left;color:var(--ink)}.brand-button b{display:block;font:400 20px var(--serif)}.brand-button small{display:block}.brand-seal{display:grid;place-items:center;width:34px;height:34px;border-radius:50% 50% 48% 52%;background:var(--ink);color:white;font-family:var(--serif)}.top-actions{display:flex;align-items:center;gap:12px}.status-dot{font-size:12px;color:var(--green)}.status-dot:before{content:"";display:inline-block;width:6px;height:6px;background:var(--green);border-radius:50%;margin-right:7px}.ghost-button{padding:8px 12px;color:var(--muted)}.page{max-width:1180px;margin:auto;padding:52px 24px}.hero{display:grid;grid-template-columns:1.35fr .65fr;gap:30px;align-items:stretch}.hero-main{padding:48px;border-radius:30px;background:var(--ink);color:white;position:relative;overflow:hidden;min-height:300px}.hero-main:after{content:"言";position:absolute;right:-10px;bottom:-75px;font:260px var(--serif);color:rgba(255,255,255,.04);pointer-events:none}.eyebrow{font-size:12px;font-weight:800;letter-spacing:.18em;color:#83afd6;text-transform:uppercase}.hero h1{max-width:670px;margin:20px 0 12px;font:400 clamp(38px,5vw,66px)/1.1 var(--serif);letter-spacing:.02em}.hero-main p{color:#c6d1dc;line-height:1.8}.hero-actions{display:flex;gap:12px;margin-top:30px}.light-button,.outline-button,.choice,.record-button,.link-button{cursor:pointer;border:0}.light-button{background:#fff;color:var(--ink);padding:13px 18px;border-radius:12px;font-weight:700}.outline-button{color:#fff;background:transparent;border:1px solid rgba(255,255,255,.25);padding:13px 18px;border-radius:12px}.progress-card{border:1px solid var(--line);border-radius:30px;background:var(--card);padding:32px;display:flex;flex-direction:column;justify-content:space-between}.progress-ring{width:116px;height:116px;border-radius:50%;display:grid;place-items:center;background:conic-gradient(var(--amber) var(--p),#ebe5d9 0);position:relative}.progress-ring:after{content:"";position:absolute;width:88px;height:88px;background:var(--card);border-radius:50%}.progress-ring span{position:relative;z-index:1;font:30px var(--serif)}.progress-card h2{font:400 24px var(--serif);margin:25px 0 6px}.progress-card p{font-size:13px;color:var(--muted);line-height:1.6}.section-head{margin:56px 0 22px;display:flex;align-items:end;justify-content:space-between}.section-head h2{font:400 30px var(--serif);margin:5px 0}.section-head p{margin:0;color:var(--muted);font-size:13px}.link-button{background:none;color:var(--blue);font-weight:700}.course-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.course-card{min-height:230px;padding:26px;background:var(--card);border:1px solid var(--line);border-radius:var(--r);display:flex;flex-direction:column;cursor:pointer;transition:.25s;text-align:left;color:var(--ink)}.course-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:transparent}.course-icon{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;font:24px var(--serif);background:#eaf1f8;color:var(--blue)}.course-card.amber .course-icon{background:#f7eddd;color:var(--amber)}.course-card.green .course-icon{background:#e6f0e9;color:var(--green)}.course-card h3{font:400 25px var(--serif);margin:28px 0 8px}.course-card p{font-size:13px;color:var(--muted);line-height:1.6;flex:1}.course-meta{display:flex;justify-content:space-between;font-size:12px}.scene-list{display:grid;gap:12px}.scene-row{display:grid;grid-template-columns:70px 1fr auto;align-items:center;padding:22px 24px;border:1px solid var(--line);border-radius:18px;background:rgba(255,253,248,.68);cursor:pointer;text-align:left;color:var(--ink);transition:.2s}.scene-row:hover{background:var(--card);transform:translateX(5px)}.scene-number{font:26px var(--serif);color:var(--amber)}.scene-row h3{margin:0 0 6px;font:400 20px var(--serif)}.scene-row p{margin:0;color:var(--muted);font-size:12px}.scene-go{font-size:22px;color:var(--blue)}.bottom-nav{display:none}.breadcrumb{margin-bottom:30px;color:var(--muted);font-size:13px}.breadcrumb button{border:0;background:none;color:var(--blue);cursor:pointer;padding:0}.detail-hero{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.detail-hero h1{font:400 50px var(--serif);margin:10px 0}.detail-hero p{color:var(--muted);line-height:1.8}.quote-panel{padding:38px;border-radius:28px;background:#e7edf1}.quote-panel blockquote{margin:0;font:25px/1.7 var(--serif)}.lesson-list{margin-top:42px;display:grid;gap:14px}.lesson{display:grid;grid-template-columns:54px 1fr;gap:18px;padding:25px;background:var(--card);border:1px solid var(--line);border-radius:18px}.lesson-num{font:24px var(--serif);color:var(--amber)}.lesson h3{margin:0 0 8px}.lesson p{color:var(--muted);line-height:1.7;margin:0}.lesson .example{margin-top:14px;padding:12px 15px;border-left:3px solid var(--blue);background:#f3f6f8;color:var(--ink)}.practice-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:24px}.context-card{border-radius:28px;background:#183b60;color:white;padding:38px;position:sticky;top:105px;align-self:start}.context-card h1{font:400 38px var(--serif);margin:12px 0}.context-card .context{color:#bfcbd7;line-height:1.7;font-size:13px}.customer-bubble{margin-top:28px;padding:22px;border:1px solid rgba(255,255,255,.18);border-radius:18px 18px 18px 4px;background:rgba(255,255,255,.07);font:20px/1.7 var(--serif)}.practice-card{padding:34px;border:1px solid var(--line);border-radius:28px;background:var(--card)}.practice-card h2{font:400 27px var(--serif);margin:0}.practice-card>p{color:var(--muted);font-size:13px}.choices{display:grid;gap:11px;margin:25px 0}.choice{padding:17px 18px;border:1px solid var(--line);border-radius:14px;background:white;text-align:left;color:var(--ink);display:flex;gap:13px;line-height:1.6}.choice:hover,.choice:focus-visible{border-color:var(--blue);outline:2px solid rgba(46,104,168,.12)}.choice span{color:var(--blue);font-weight:800}.or{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:12px;margin:24px 0}.or:before,.or:after{content:"";height:1px;background:var(--line);flex:1}.speech-box{padding:20px;border-radius:18px;background:#f1eee6}.speech-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.record-button{padding:13px 17px;border-radius:12px;background:var(--red);color:#fff;font-weight:700}.record-button.recording{animation:pulse 1.2s infinite}.upload-label{padding:12px 15px;border:1px solid var(--line);border-radius:12px;background:var(--card);font-size:13px;cursor:pointer}.upload-label input{display:none}.speech-box textarea{width:100%;min-height:94px;margin-top:14px;padding:13px;border:1px solid var(--line);border-radius:12px;background:white;resize:vertical;color:var(--ink)}.speech-box textarea:focus{outline:2px solid rgba(46,104,168,.2);border-color:var(--blue)}.speech-note{font-size:11px;color:var(--muted);line-height:1.5}.evaluate-button{margin-top:10px;width:100%;padding:13px;border:0;border-radius:12px;background:var(--blue);color:white;font-weight:700;cursor:pointer}.feedback{margin-top:24px;border-radius:18px;padding:22px;background:#eaf2ec;border-left:4px solid var(--green)}.feedback.low{background:#f8e9e7;border-left-color:var(--red)}.feedback.mid{background:#f7efdf;border-left-color:var(--amber)}.score-line{display:flex;justify-content:space-between;align-items:center}.score-line b{font:34px var(--serif)}.feedback p{line-height:1.7}.sample{font-family:var(--serif);padding-top:13px;border-top:1px solid rgba(30,60,45,.15)}.toast{position:fixed;z-index:80;left:50%;top:18px;transform:translate(-50%,-90px);opacity:0;background:var(--ink);color:#fff;padding:12px 18px;border-radius:12px;font-size:13px;transition:.3s}.toast.show{transform:translate(-50%,0);opacity:1}@keyframes pulse{50%{box-shadow:0 0 0 8px rgba(184,73,82,.15)}}@media(max-width:800px){.login-shell{grid-template-columns:1fr}.login-art{display:none}.login-panel{min-height:100vh;padding:32px 24px}.login-copy{margin:12vh 0 38px}.topbar{height:66px;padding:0 18px}.status-dot{display:none}.page{padding:28px 16px}.hero{grid-template-columns:1fr}.hero-main{padding:30px 24px;min-height:340px}.hero-actions{align-items:stretch;flex-direction:column}.progress-card{display:grid;grid-template-columns:auto 1fr;gap:22px;align-items:center}.progress-ring{width:90px;height:90px}.progress-ring:after{width:68px;height:68px}.progress-ring span{font-size:24px}.progress-card h2{margin:0}.section-head{margin-top:42px}.course-grid{grid-template-columns:1fr}.course-card{min-height:200px}.scene-row{grid-template-columns:48px 1fr auto;padding:18px 16px}.bottom-nav{position:fixed;z-index:30;bottom:0;left:0;right:0;padding:8px 18px max(8px,env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(3,1fr);background:rgba(255,253,248,.94);backdrop-filter:blur(18px);border-top:1px solid var(--line)}.bottom-nav button{border:0;background:none;color:var(--muted);font-size:11px;display:grid;gap:3px;place-items:center}.bottom-nav button span{font-size:19px}.bottom-nav button.active{color:var(--blue);font-weight:700}.detail-hero,.practice-layout{grid-template-columns:1fr;gap:24px}.detail-hero h1{font-size:42px}.quote-panel{padding:28px}.context-card{position:relative;top:auto;padding:28px 24px}.practice-card{padding:26px 20px}.lesson{grid-template-columns:36px 1fr;padding:20px 16px}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}:focus-visible{outline:3px solid rgba(46,104,168,.4);outline-offset:3px}
.dim-grid{display:grid;gap:9px;margin:16px 0 4px}.dim-row{display:grid;grid-template-columns:56px 1fr 44px;align-items:center;gap:10px}.dim-label{font-size:12px;color:var(--muted)}.dim-track{height:8px;border-radius:6px;background:rgba(30,60,45,.1);overflow:hidden}.dim-fill{display:block;height:100%;border-radius:6px;background:var(--green);transition:width .5s}.dim-fill.blue{background:var(--blue)}.dim-fill.green{background:var(--green)}.dim-fill.amber{background:var(--amber)}.dim-fill.violet{background:#7a5fa8}.dim-score{font-size:12px;font-weight:800;text-align:right}.voice-notes{margin:6px 0;padding:12px 14px;border-radius:12px;background:rgba(255,255,255,.55)}.voice-notes h4{margin:0 0 6px;font-size:12px;color:var(--amber)}.voice-notes ul{margin:0;padding-left:18px;font-size:12px;line-height:1.8;color:var(--muted)}@media(max-width:800px){.dim-row{grid-template-columns:48px 1fr 40px}}

.tone-card{margin:12px 0;padding:13px 15px;border-radius:13px;background:#eef2f7;border:1px solid #dbe3ec}.tone-card .tone-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);margin-bottom:6px}.tone-card .tone-head b{color:var(--blue);font-size:14px}.tone-card ul{margin:0 0 8px;padding-left:18px;font-size:12px;line-height:1.8;color:var(--muted)}.tone-card .tone-advice{margin:0;padding-top:8px;border-top:1px dashed #ccd6e0;font-size:12px;line-height:1.7;color:var(--ink)}.tone-card.tone-pressing .tone-head b{color:var(--red)}.tone-card.tone-unstable .tone-head b{color:var(--amber)}.tone-card.tone-flat .tone-head b{color:var(--amber)}.tone-card.tone-cold .tone-head b{color:var(--red)}.tone-card.tone-stable .tone-head b{color:var(--green)}

/* ---- 课程卡扩展配色 ---- */
.course-card.rose .course-icon{background:#f9e7e8;color:var(--red)}
.course-card.violet .course-icon{background:#efeaf6;color:#7a5fa8}

/* ---- 播放按钮 ---- */
.play-btn{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:#fff;color:var(--blue);font-size:12px;line-height:1;display:inline-grid;place-items:center;cursor:pointer;vertical-align:middle;transition:.2s;flex:none}
.play-btn:hover{border-color:var(--blue);box-shadow:0 0 0 4px rgba(46,104,168,.1)}
.play-btn.playing{background:var(--blue);color:#fff;animation:pulse 1.2s infinite}
.play-btn.small{width:30px;height:30px;font-size:11px;margin-left:8px}
.quote-play{position:absolute;right:22px;bottom:22px;width:44px;height:44px;font-size:14px;background:#fff;box-shadow:var(--shadow)}
.quote-panel{position:relative}

/* ---- 场景示范按钮 ---- */
.sample-audio-btn{display:inline-flex;align-items:center;gap:9px;margin:14px 0 4px;padding:10px 16px;border:1px solid rgba(46,104,168,.35);border-radius:12px;background:rgba(46,104,168,.06);color:var(--blue);font-weight:700;font-size:13px;cursor:pointer;transition:.2s}
.sample-audio-btn:hover{background:rgba(46,104,168,.12)}
.sample-audio-btn.playing{background:var(--blue);color:#fff}
.sample-icon{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:currentColor;color:inherit}
.sample-icon:before{content:"▶";font-size:9px;color:#fff;margin-left:1px}

/* ---- 训练测评报告卡 ---- */
.report-card{margin-top:24px;border-radius:20px;padding:24px;background:#eaf2ec;border:1px solid #cfe0d4}
.report-card.low{background:#f8e9e7;border-color:#eed3d0}
.report-card.mid{background:#f7efdf;border-color:#ebdcc0}
.report-head{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap}
.report-head h3{margin:4px 0 2px;font:400 22px var(--serif)}
.report-head p{margin:0;font-size:11px;color:var(--muted)}
.report-score{display:flex;align-items:baseline;gap:4px}
.report-score b{font:46px var(--serif);color:var(--ink)}
.report-score small{color:var(--muted);font-size:12px}
.report-msg{margin:10px 0 0;line-height:1.7;font-size:14px}
.metrics-grid{margin:14px 0;padding:14px;border-radius:14px;background:rgba(255,255,255,.6)}
.metrics-grid h4{margin:0 0 10px;font-size:12px;color:var(--amber);letter-spacing:.05em}
.metrics-wrap{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.metric-item{padding:11px 12px;border-radius:11px;background:#fff;border:1px solid rgba(30,60,45,.1)}
.metric-dim{font-size:10px;letter-spacing:.12em;color:var(--muted);display:block;margin-bottom:3px}
.metric-label{font-size:14px;color:var(--blue);display:block}
.metric-value{font-size:11px;color:var(--muted);margin:3px 0 0}
.metric-advice{font-size:11px;line-height:1.6;color:var(--ink);margin:5px 0 0;padding-top:5px;border-top:1px dashed var(--line)}
.sample-row{display:flex;align-items:flex-start;gap:8px}
.sample-row .sample{flex:1}
.report-actions{margin-top:16px;text-align:right}
.retry-btn{padding:10px 18px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);font-weight:700;font-size:13px;cursor:pointer;transition:.2s}
.retry-btn:hover{border-color:var(--blue);color:var(--blue)}
@media(max-width:800px){.metrics-wrap{grid-template-columns:1fr}.report-card{padding:18px 16px}.report-head h3{font-size:19px}.report-score b{font-size:38px}}

/* ---- 节奏分段 ---- */
.rhythm-card{margin:14px 0;padding:14px;border-radius:14px;background:rgba(255,255,255,.6);border:1px dashed rgba(30,60,45,.18)}
.rhythm-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:10px}
.rhythm-head span{font-size:12px;color:var(--amber);letter-spacing:.05em;font-weight:800}
.rhythm-head small{font-size:10px;color:var(--muted)}
.rhythm-unit{padding:9px 11px;border-radius:10px;background:#fff;border:1px solid rgba(30,60,45,.08);margin-bottom:8px}
.rhythm-unit-top{display:flex;align-items:flex-start;gap:8px}
.rhythm-idx{font:14px var(--serif);color:var(--amber);line-height:1.6;flex:none}
.rhythm-unit-top p{margin:0;font-size:12px;line-height:1.7;color:var(--ink);flex:1}
.rhythm-tags{display:inline-flex;gap:4px;flex:none;margin-top:2px}
.rhythm-tags i{font-style:normal;font-size:9px;padding:2px 6px;border-radius:6px;font-weight:800}
.tag-blue{background:#eaf1f8;color:var(--blue)}
.tag-green{background:#e6f0e9;color:var(--green)}
.tag-amber{background:#f7eddd;color:var(--amber)}
.rhythm-meta{font-size:11px;color:var(--muted);margin-top:5px;padding-left:22px}
.rhythm-meta b{color:var(--ink)}
.rhythm-meta .dim{color:var(--muted)}
.rhythm-pause{color:var(--amber);font-weight:700}
.rhythm-concl{margin:10px 0 0;padding-left:18px;font-size:11px;line-height:1.8;color:var(--muted)}
.rhythm-advice{margin:8px 0 0;padding-top:8px;border-top:1px dashed #ccd6e0;font-size:11px;line-height:1.7;color:var(--ink)}