:root{--bg:#f6f8fc;--card:#fff;--ink:#152033;--muted:#6f7a8c;--line:#e4eaf3;--accent:#2d63f4;--accent2:#eef3ff;--danger:#b42318;--ok:#139b58;--shadow:0 18px 55px rgba(33,49,91,.08)}*{box-sizing:border-box}html,body{min-height:100%}body{margin:0;font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif;background:radial-gradient(circle at 12% 0,#edf3ff,transparent 32%),linear-gradient(#fafcff,#f5f7fb);color:var(--ink)}button,input,textarea{font:inherit}.shell{max-width:960px;margin:auto;padding:18px}.topbar{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:18px}.brand{display:flex;gap:11px;align-items:center}.brand b{display:block;font-size:17px}.brand small{color:var(--muted);display:block;margin-top:2px}.logo{width:43px;height:43px;border-radius:14px;background:#172033;color:#fff;display:grid;place-items:center;font-weight:800}.card{background:rgba(255,255,255,.96);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow);padding:28px}.hero{padding:46px}.tag{display:inline-block;background:var(--accent2);color:var(--accent);padding:7px 11px;border-radius:999px;font-size:12px}.hero h1{font-size:38px;line-height:1.16;margin:23px 0 13px;letter-spacing:-.5px}.hero>p{color:var(--muted);line-height:1.8;max-width:730px}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:28px 0}.feature-grid>div{padding:18px;border:1px solid var(--line);border-radius:18px;background:#fbfcfe}.feature-grid b,.feature-grid small{display:block}.feature-grid small{margin-top:7px;color:var(--muted);line-height:1.6}.feature-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:11px;background:var(--accent2);color:var(--accent);font-weight:800;margin-bottom:12px}.primary{border:0;background:var(--accent);color:#fff;border-radius:13px;padding:12px 18px;font-weight:700;cursor:pointer;box-shadow:0 8px 20px rgba(45,99,244,.16)}.primary:disabled{opacity:.55;cursor:not-allowed}.big{padding:14px 26px}.muted{font-size:12px;color:var(--muted)}.hidden{display:none!important}.voice-controls{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:16px;padding:9px 12px;box-shadow:0 8px 28px rgba(30,45,80,.05)}.switchline{display:flex;align-items:center;gap:7px;cursor:pointer;white-space:nowrap}.switchline input{display:none}.switchline em{font-style:normal;font-size:12px;color:var(--muted)}.switch{width:34px;height:19px;border-radius:99px;background:#dbe1ea;position:relative;transition:.2s}.switch:after{content:"";position:absolute;width:15px;height:15px;border-radius:50%;background:#fff;left:2px;top:2px;box-shadow:0 1px 4px #8390a3;transition:.2s}.switchline input:checked+.switch{background:var(--accent)}.switchline input:checked+.switch:after{transform:translateX(15px)}.chat{padding:24px}.chat-head{display:flex;align-items:center;gap:12px;justify-content:space-between}.progress{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:12px;flex:1}.progress i{height:7px;background:#edf0f5;border-radius:99px;flex:1;overflow:hidden}.progress em{display:block;height:100%;width:0;background:var(--accent);transition:.3s}.soft-badge{font-size:11px;padding:6px 9px;border-radius:999px;background:#f1f4f8;color:#6c7686}.messages{min-height:440px;max-height:62vh;overflow:auto;padding:22px 4px}.bubble{max-width:80%;padding:15px 17px;border-radius:18px;margin:10px 0;line-height:1.68;white-space:pre-wrap;animation:pop .18s ease-out}.bot{background:#f1f4f9;border:1px solid #ebeff5;border-top-left-radius:6px}.user{background:var(--accent);color:#fff;margin-left:auto;border-top-right-radius:6px}.ack{display:block;color:#627084;margin-bottom:7px;font-size:13px}.user .ack{color:#fff}.qtext{font-weight:600}.hint{display:block;color:var(--muted);font-size:12px;margin-top:7px}.composer{display:flex;gap:10px;border-top:1px solid var(--line);padding-top:16px;align-items:flex-end}.composer textarea{flex:1;border:1px solid var(--line);border-radius:15px;padding:13px 14px;font:inherit;resize:none;outline:none;min-height:50px;max-height:150px}.composer textarea:focus{border-color:#9cb0f8;box-shadow:0 0 0 3px #edf1ff}.mic{width:48px;height:48px;border-radius:15px;border:1px solid var(--line);background:#fff;cursor:pointer;font-size:20px}.mic.recording{background:#fff0f0;border-color:#f2a6a6;animation:pulse 1.3s infinite}.record-tip{text-align:left;margin:10px 0 0 58px;color:#b42318;font-size:12px}.thinking{display:flex;align-items:center;gap:4px;color:var(--muted);font-size:12px;padding:0 6px 10px}.thinking span{width:6px;height:6px;border-radius:50%;background:#94a0b1;animation:bounce 1.1s infinite}.thinking span:nth-child(2){animation-delay:.15s}.thinking span:nth-child(3){animation-delay:.3s}.thinking em{font-style:normal;margin-left:7px}.resultcard{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;margin-bottom:14px;box-shadow:0 14px 40px rgba(33,49,91,.05)}.resultcard h2,.resultcard h3{margin-top:10px}.scores{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.score{padding:16px;border-radius:15px;background:#f7f9fc}.score b{font-size:24px;display:block;margin-top:5px}.score small{color:var(--muted)}.warn{border-left:4px solid #f79009;background:#fff8eb;padding:14px;border-radius:10px;color:#7a4b00;line-height:1.6}.danger{border-left:4px solid var(--danger);background:#fff1f0;padding:14px;border-radius:10px;color:var(--danger)}@keyframes bounce{0%,70%,100%{transform:translateY(0)}35%{transform:translateY(-5px)}}@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(190,30,30,.15)}50%{box-shadow:0 0 0 8px rgba(190,30,30,0)}}@keyframes pop{from{opacity:.5;transform:translateY(4px)}to{opacity:1;transform:none}}@media(max-width:760px){.shell{padding:10px}.card,.hero{padding:20px;border-radius:19px}.hero h1{font-size:29px}.feature-grid,.scores{grid-template-columns:1fr}.bubble{max-width:93%}.messages{min-height:55vh}.topbar{align-items:flex-start}.brand small{display:none}.voice-controls{gap:8px;flex-direction:column;align-items:flex-start}.switchline em{font-size:11px}.record-tip{margin-left:0}}@media(max-width:430px){.topbar{gap:8px}.logo{width:38px;height:38px}.brand b{font-size:15px}.voice-controls{padding:7px}.composer{gap:7px}.mic{width:44px;height:44px}.primary{padding:11px 14px}}

/* V2.1：动态快捷选项、强制跟随最新消息、微信/移动端语音兼容提示 */
.quick-options{display:flex;flex-wrap:wrap;gap:8px;padding:2px 4px 12px}.quick-option{border:1px solid #cfdaf7;background:#f7f9ff;color:#244cba;border-radius:999px;padding:9px 13px;cursor:pointer;line-height:1.25}.quick-option:hover{background:#edf2ff}.quick-option.other{color:#667085;background:#fff;border-color:var(--line)}.voice-notice{margin:3px 0 10px;padding:10px 12px;border-radius:12px;background:#f5f8ff;color:#52627a;font-size:12px;line-height:1.55}.voice-notice.warn{background:#fff7ed;color:#9a4d00}.voice-notice.ok{background:#ecfdf3;color:#067647}.thinking:not(.hidden){min-height:30px}.messages{scroll-behavior:smooth}.qtext{font-weight:600;font-size:16px}.ack{line-height:1.5}.composer{scroll-margin-bottom:10px}
@media(max-width:760px){.quick-options{padding-bottom:10px}.quick-option{padding:10px 12px;font-size:14px}.messages{max-height:58vh}.voice-notice{font-size:12px}}

.native-audio-input{position:fixed!important;left:-10000px!important;top:-10000px!important;width:1px!important;height:1px!important;opacity:.01!important;pointer-events:none!important}

/* V2.2: user-selectable language style + streaming + AI advice */
.user-controls{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}.style-picker{display:flex;align-items:center;gap:8px;border:1px solid var(--line);background:#fff;border-radius:14px;padding:7px 10px;color:var(--muted);font-size:12px}.style-picker select{border:0;outline:none;background:transparent;color:var(--ink);font:inherit;font-weight:600;cursor:pointer}.streaming-bubble{min-height:48px}.streamtext{white-space:pre-wrap;line-height:1.72}.advice-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.ai-advice{min-height:92px;padding:16px 17px;border:1px solid #e4e9f3;background:#f8faff;border-radius:15px;line-height:1.75;white-space:pre-wrap}.advice-text{white-space:pre-wrap}.cursor{display:inline-block;animation:cursorBlink .8s infinite;color:var(--accent)}@keyframes cursorBlink{0%,45%{opacity:1}46%,100%{opacity:0}}
@media(max-width:760px){.topbar{gap:10px;flex-direction:column}.user-controls{width:100%;justify-content:space-between}.style-picker{flex:1;justify-content:space-between}.voice-controls{flex-direction:row!important}.messages{min-height:50vh}.streamtext{font-size:15px}}