:root{--ink:#17243c;--muted:#63718a;--blue:#2955e8;--blue-soft:#edf2ff;--line:#e3e8f2;--bg:#f7f9fe;--surface:#fff;--green:#097967;--green-soft:#e8f6f1;--orange:#a7600f;--shadow:0 12px 36px #23366608;--radius:24px;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;color:var(--ink);background:var(--bg);font-synthesis:none}
/* Keep the sentence visible when the learner scrolls down to the microphone. */
.panel:has(.sticky-answer) .prompt-card{position:sticky;top:8px;z-index:2;box-shadow:0 4px 14px #20345612}
@media(max-height:550px){.panel:has(.sticky-answer) .prompt-card{position:static}}
*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button,a,input,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.48}button:focus-visible,a:focus-visible,textarea:focus-visible,input:focus-visible{outline:3px solid #ffb934;outline-offset:4px}button{touch-action:manipulation}a{color:var(--blue)}.skip-link{position:fixed;left:12px;top:-100px;padding:12px;background:white;z-index:100}.skip-link:focus{top:12px}.site-header{height:88px;max-width:1140px;margin:auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:16px}.brand{border:0;background:none;color:var(--ink);display:flex;align-items:center;gap:12px;font-size:22px;font-weight:750;padding:0}.brand-mark{width:40px;height:40px;border-radius:12px;background:var(--blue);display:grid;place-items:center;color:white}.brand-sub{font-size:14px;font-weight:450;color:var(--muted);padding-left:12px;border-left:1px solid var(--line)}.header-note{font-size:14px;color:var(--muted);display:flex;align-items:center;gap:9px}.icon{width:24px;height:24px;display:inline-block;vertical-align:middle;flex-shrink:0}.shell{max-width:1040px;margin:0 auto;padding:42px 32px 72px}.eyebrow{font-size:14px;font-weight:650;color:var(--blue);letter-spacing:.04em;margin:0 0 14px}.intro{margin-bottom:34px}.intro h1{font-size:38px;letter-spacing:-.035em;line-height:1.35;margin:0 0 14px;font-weight:750}.intro p{font-size:18px;line-height:1.75;color:var(--muted);margin:0}.course-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.course-card{position:relative;padding:32px;text-align:left;border:1px solid var(--line);background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .2s,border-color .2s;overflow:hidden;color:var(--ink)}.course-card:hover{transform:translateY(-3px);border-color:#a5b7ff}.course-card .course-icon{width:56px;height:56px;background:var(--blue-soft);color:var(--blue);border-radius:18px;display:grid;place-items:center;margin-bottom:30px}.course-card.sales .course-icon{background:var(--green-soft);color:var(--green)}.course-card .course-icon .icon{width:28px;height:28px}.course-card h2{font-size:26px;margin:0 0 12px;letter-spacing:-.02em}.course-card p{font-size:17px;line-height:1.7;color:var(--muted);margin:0 0 24px;max-width:360px}.scenario-preview{font-size:16px;padding:17px 18px;background:#f6f8fc;border-radius:14px;line-height:1.65;min-height:83px}.scenario-preview span{font-size:13px;color:var(--muted);display:block;margin-bottom:3px}.card-bottom{margin-top:26px;display:flex;align-items:center;justify-content:space-between;font-size:15px;color:var(--blue);font-weight:650}.card-bottom small{color:var(--muted);font-size:14px;font-weight:400}.sales .card-bottom{color:var(--green)}.how-it-works{display:flex;justify-content:center;gap:28px;margin-top:34px;padding:24px 12px;color:var(--muted);font-size:15px}.how-it-works span{display:flex;align-items:center;gap:8px}.how-it-works b{background:#e9edf6;font-size:12px;border-radius:50%;width:24px;height:24px;display:grid;place-items:center;color:#64728b}.status-strip{font-size:14px;line-height:1.7;color:var(--muted);margin-top:26px;padding:16px 20px;background:#eef2fa;border-radius:14px}.status-strip strong{font-weight:600;color:#425472}.footer{font-size:13px;color:var(--muted);text-align:center;line-height:1.8;margin-top:30px}.back{border:0;background:transparent;color:var(--muted);padding:8px 0;display:flex;align-items:center;gap:6px;font-size:15px;margin-bottom:24px}.narrow{max-width:800px;margin:auto}.panel{background:white;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:36px}.panel h1{font-size:30px;line-height:1.4;margin:12px 0 18px}.panel h2{font-size:24px;margin:0 0 16px}.body-copy{font-size:18px;line-height:1.9;color:#43536b}.tag{display:inline-flex;padding:6px 11px;border-radius:8px;font-size:13px;line-height:1.4;background:var(--blue-soft);color:var(--blue);font-weight:600}.scene-box{padding:20px 22px;background:#f6f8fc;border-radius:16px;line-height:1.8;color:#4f6079;font-size:17px;margin:22px 0}.scene-box strong{color:var(--ink)}.goal-row{display:flex;gap:12px;font-size:17px;line-height:1.7;align-items:flex-start;padding:0 0 24px}.goal-row .icon{color:var(--green);margin-top:3px}.actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:26px}.btn{border:0;border-radius:13px;padding:15px 24px;min-height:52px;font-weight:650;display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--blue);color:white;font-size:17px;line-height:1.4}.btn:hover:not(:disabled){filter:brightness(.94)}.btn.secondary{color:#455674;background:#eef2fa}.btn.ghost{color:var(--blue);background:white;border:1px solid var(--line)}.btn.danger{background:#b63643;color:white}.btn.wide{width:100%}.text-btn{background:none;border:0;color:var(--muted);padding:12px 6px;font-size:15px;min-height:44px}.text-btn:hover{color:var(--blue)}.between{display:flex;justify-content:space-between;gap:14px;align-items:center}.subtle{font-size:14px;line-height:1.7;color:var(--muted)}.notice{padding:14px 17px;border-radius:12px;background:#fff6e8;color:#8b5d23;font-size:14px;line-height:1.75;margin:18px 0}.notice.info{background:var(--blue-soft);color:#475f9c}.notice.error{background:#fff0f0;color:#a12c3e}.resume{display:flex;justify-content:space-between;align-items:center;gap:16px;background:white;border:1px solid var(--line);padding:20px 24px;border-radius:18px;margin:0 0 26px}.resume p{margin:5px 0 0;font-size:14px;color:var(--muted)}.progress-row{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:26px}.progress-item{font-size:14px;color:#8290a7;padding-top:12px;border-top:3px solid #e3e8f2;display:flex;align-items:center;gap:6px}.progress-item.active{border-color:var(--blue);color:var(--blue);font-weight:650}.progress-item.done{border-color:#a9bafb;color:#536da8}.step-top{font-size:14px;color:var(--muted);display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:16px}.coach-label{display:flex;align-items:center;gap:9px;font-size:14px;font-weight:650;color:#637693}.coach-dot{width:30px;height:30px;display:grid;place-items:center;background:var(--blue-soft);color:var(--blue);border-radius:10px}.coach-dot .icon{width:17px;height:17px}.examples{display:grid;gap:14px;margin:24px 0}.example{padding:20px 23px;border:1px solid var(--line);border-radius:16px;font-size:19px;line-height:1.8}.example.good{border-color:#bbdfd4;background:#f2faf6}.example-label{font-size:13px;color:var(--muted);margin-bottom:5px}.example.good .example-label{color:var(--green)}.audio-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;background:#f5f7fc;border-radius:14px;padding:10px 14px;margin:22px 0 0}.audio-bar .text-btn{color:#4566c0;font-size:14px;padding:8px 10px}.audio-state{color:var(--muted);font-size:13px;flex:1;min-width:100px}.option{width:100%;text-align:left;display:flex;align-items:flex-start;gap:14px;border:1px solid var(--line);border-radius:15px;background:white;padding:20px;margin:12px 0;color:var(--ink);line-height:1.75;font-size:18px;transition:border-color .15s,background .15s}.option:hover{border-color:#9cafed;background:#f8faff}.option.chosen{border-color:var(--blue);background:var(--blue-soft)}.option.correct{border-color:#68b398;background:#eff9f3}.option.incorrect{border-color:#e0a58c;background:#fff7f2}.option-letter{width:30px;height:30px;background:#f0f3fa;border-radius:9px;display:grid;place-items:center;flex-shrink:0;font-size:14px;font-weight:650;margin-top:1px}.feedback{padding:20px 22px;border-radius:15px;background:#f1f7ff;line-height:1.85;font-size:17px;margin-top:20px}.feedback strong{color:var(--blue)}.prompt-card{padding:25px 26px;background:var(--blue-soft);border:1px solid #dbe4ff;border-radius:18px;margin:24px 0}.prompt-card .prompt-label{font-size:14px;color:#5c75b4;display:flex;align-items:center;gap:8px;margin-bottom:13px}.prompt-text{font-size:28px;line-height:1.7;font-weight:600;letter-spacing:.01em;margin:0;word-break:break-word;color:#24477f}.prompt-card small{display:block;color:#677fae;font-size:14px;margin-top:10px}.answer-label{display:block;font-size:15px;color:#50647f;margin:18px 0 10px;font-weight:600}textarea{width:100%;min-height:128px;resize:vertical;padding:17px 19px;border:1px solid #dce3ef;border-radius:14px;color:var(--ink);background:white;font-size:19px;line-height:1.75}textarea::placeholder{color:#8a98ae}textarea:focus{border-color:var(--blue)}.input-meta{display:flex;justify-content:space-between;gap:15px;margin:7px 2px;color:var(--muted);font-size:13px}.voice-controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.voice-status{min-height:27px;font-size:14px;line-height:1.8;color:var(--muted);margin:12px 0}.voice-status.recording{color:#b63643}.record-dot{display:inline-block;width:9px;height:9px;background:#c7434b;border-radius:50%;margin-right:8px;animation:pulse 1.4s infinite}.transcript-box{margin-top:18px}.recording-player{width:100%;margin:12px 0}.checklist{display:grid;gap:12px;margin-top:20px}.check-row{display:flex;align-items:flex-start;gap:12px;line-height:1.7;font-size:17px}.check-row input{margin:5px 0 0;width:20px;height:20px;accent-color:var(--blue);flex-shrink:0}.conversation{display:grid;gap:16px;margin:20px 0}.bubble{border-radius:16px;padding:19px 22px;background:#f2f5fb;max-width:92%;font-size:19px;line-height:1.75;word-break:break-word}.bubble.user{background:#edf2ff;margin-left:auto;color:#304e91}.bubble small{display:block;font-size:13px;margin-bottom:7px;color:var(--muted)}.round-label{font-size:14px;color:var(--muted);margin-bottom:14px}.summary-icon{width:64px;height:64px;border-radius:20px;display:grid;place-items:center;background:var(--green-soft);color:var(--green);margin-bottom:20px}.summary-icon .icon{width:34px;height:34px}.summary-line{padding:18px 0;border-bottom:1px solid var(--line);line-height:1.8;font-size:17px}.summary-line:last-child{border-bottom:0}.summary-line small{display:block;font-size:14px;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:24px;padding:30px;max-width:min(560px,calc(100vw - 32px));width:100%;color:var(--ink);box-shadow:0 30px 100px #13234c26}dialog::backdrop{background:#13213b66;backdrop-filter:blur(3px)}dialog h2{margin:0 0 12px;font-size:24px}dialog p{font-size:17px;line-height:1.75;color:var(--muted)}.dialog-close{border:0;background:#f0f3f8;width:38px;height:38px;border-radius:50%;float:right;display:grid;place-items:center}.scene-choice{border:1px solid var(--line);background:white;text-align:left;border-radius:14px;padding:18px;margin:8px 0;width:100%;color:var(--ink);font-size:17px;line-height:1.6}.scene-choice:hover{border-color:var(--blue)}.scene-choice small{display:block;color:var(--muted);font-size:14px;margin-top:5px}.hidden{display:none!important}.inline-links{display:flex;justify-content:center;gap:16px;margin-top:14px}.capability{font-size:13px;color:var(--muted);line-height:1.8;margin-top:18px}.sticky-answer{padding-top:4px}.focus-title:focus{outline:none}.network-error{max-width:1040px;margin:auto;padding:10px 32px;color:#a12c3e;font-size:14px}.local-tag{font-size:12px;font-weight:500;letter-spacing:.02em;border:1px solid var(--line);border-radius:6px;padding:4px 7px;color:var(--muted)}
@keyframes pulse{50%{opacity:.35}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}@media(max-width:700px){.site-header{height:72px;padding:0 20px}.brand{font-size:20px;gap:10px}.brand-mark{width:36px;height:36px}.brand-sub{display:none}.header-note{font-size:12px}.shell{padding:24px 20px 48px}.intro{margin-bottom:25px}.intro h1{font-size:30px}.intro p{font-size:17px}.course-grid{grid-template-columns:1fr;gap:16px}.course-card{padding:25px}.course-card .course-icon{margin-bottom:21px;width:46px;height:46px;border-radius:14px}.course-card h2{font-size:24px}.course-card p{margin-bottom:17px}.scenario-preview{min-height:0;padding:14px}.card-bottom{margin-top:20px}.how-it-works{gap:14px;flex-wrap:wrap;margin-top:18px;font-size:13px;padding:18px 0}.how-it-works span{gap:5px}.how-it-works b{width:20px;height:20px}.panel{padding:25px 21px;border-radius:20px}.panel h1{font-size:26px}.body-copy{font-size:17px}.back{margin-bottom:16px}.progress-row{gap:8px;margin-bottom:20px}.progress-item{font-size:13px;gap:4px}.prompt-card{padding:21px 19px}.prompt-text{font-size:25px;line-height:1.75}.example{font-size:18px;padding:17px}.option{padding:17px;font-size:17px}.actions{gap:10px}.actions>.btn{flex:1}.actions>.text-btn{flex-basis:100%}.btn{font-size:16px;padding:14px 18px}.resume{padding:17px}.resume .btn{font-size:14px;padding:11px 16px;white-space:nowrap}.audio-bar{padding:8px;gap:4px}.audio-state{flex-basis:100%;padding:0 10px}.bubble{max-width:96%;font-size:18px;padding:17px}.between{align-items:flex-start}.status-strip{padding:14px 16px;font-size:13px}.voice-controls .btn{flex:1}.voice-controls .text-btn{font-size:14px}.input-meta{font-size:12px}.scene-box{padding:18px;font-size:16px}.local-tag{display:none}.footer{font-size:12px}.summary-line{font-size:16px}}

.preview-notice{max-width:1040px;margin:0 auto;padding:8px 20px;background:#eef2fa;color:#425472;font-size:14px;line-height:1.6}
.filing{max-width:1040px;margin:24px auto;padding:16px 20px;text-align:center;font-size:14px}.filing a{color:#596579}