/* 独立产品页基础系统：沿用合音页头，正文匹配确认的排版尺度。 */
@font-face{font-family:Inter;src:url('assets/inter.woff2') format('woff2');font-style:normal;font-weight:400 700;font-display:swap}
@font-face{font-family:Mono;src:url('assets/mono.woff2') format('woff2');font-style:normal;font-weight:400 500;font-display:swap}
:root{--bg:#fff;--card:#fff;--panel:#f7f7f8;--line:#e1e1e6;--text:#18181b;--muted:#71717a;--faint:#71717a;--accent:#7954c8;--tint:#f1ecfa;--sans:Inter,'Microsoft YaHei',system-ui,sans-serif;--mono:Mono,Consolas,monospace;color-scheme:light;--copy:#52525b}
:root[data-theme=dark]{--bg:#101012;--card:#1b1b1f;--panel:#232328;--line:#36353d;--text:#f0eff2;--muted:#b2afb9;--faint:#b2afb9;--accent:#b59ae9;--tint:#30283f;color-scheme:dark;--copy:#d1cdd7}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.5 var(--sans);-webkit-font-smoothing:antialiased}
button,a{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}button:disabled{cursor:default}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--accent);outline-offset:4px}img{display:block;max-width:100%}svg{display:block;width:18px;height:18px;flex:none}button{color:inherit}::selection{background:var(--tint);color:var(--accent)}
.wrap{width:min(1172px,calc(100% - 48px));margin-inline:auto}.split>*{min-width:0}.wave{min-width:0}.emotion-card{min-width:0}.editor .pending-label{display:none}.skip{position:fixed;top:-80px;left:24px;z-index:100;background:var(--card);padding:12px}.skip:focus{top:10px}
.top{height:64px;position:sticky;top:0;z-index:30;background:var(--bg);border-bottom:1px solid var(--line)}.header-row{display:flex;align-items:center;height:64px;gap:32px;width:min(1120px,calc(100% - 48px))}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;letter-spacing:-.025em;font-weight:650;white-space:nowrap}.logo span{font-size:13px;letter-spacing:.03em;font-weight:500;color:var(--muted)}.logo img{width:24px;height:24px}.top nav{display:flex;gap:4px}.top nav a{padding:6px 12px;color:var(--muted);font-size:14.5px}.top a:hover{color:var(--accent)}
.end{margin-left:auto;display:flex;align-items:center;gap:8px}.quiet{font-size:14.5px;color:var(--muted);padding:6px 12px;white-space:nowrap}.locale,.icon-btn{height:34px;min-width:34px;display:inline-flex;align-items:center;justify-content:center;border:0;background:none;color:var(--muted);border-radius:8px}.icon-btn:hover{background:var(--panel)}
h1,h2,h3,p{margin:0}h1{font-size:56px;line-height:64px;letter-spacing:normal;font-weight:400}h2{font-size:36px;line-height:44px;letter-spacing:normal;font-weight:400;text-wrap:balance}h3{font-size:19px;line-height:1.5;font-weight:500}.section-copy>p,.section-head>p{margin-top:16px;color:var(--copy);line-height:24px}.eyebrow{display:block;font:400 12px/16px var(--mono);letter-spacing:.12em;color:var(--accent);margin-bottom:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:15px;padding:0 25px;min-height:48px;border-radius:999px;font-size:14px;line-height:1.4;border:1px solid transparent;white-space:nowrap}.primary{background:#202023;color:#fff}.primary:hover{background:#3b3349}.secondary{border-color:var(--line);background:var(--card)}.secondary:hover{border-color:var(--accent)}.actions{display:flex;align-items:center;justify-content:center;gap:12px}
.product-pill{display:inline-flex;align-items:center;gap:9px;padding:5px 13px;border:1px solid var(--line);border-radius:30px;font-size:13px;line-height:20px;margin-bottom:24px}.spark{color:var(--accent);font-size:18px;line-height:1}
/* 首屏账户入口：固定次按钮尺寸，窄右栏允许整颗换行，状态变化不挤动主按钮。 */
.hero-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.hero-actions .btn{min-height:48px}.hero-actions .auth-entry{width:124px;flex:0 0 124px;padding-inline:16px}.hero-actions .auth-entry:hover{background:var(--tint)}.auth-entry[aria-disabled=true]{cursor:wait;color:var(--muted)}
.micro-label{font-size:13px;color:var(--muted);line-height:20px}.subtle{font-size:12px;color:var(--muted);line-height:18px}.status-dot{display:inline-block;width:5px;height:5px;border-radius:50%;background:var(--accent);flex:none}.outline-pill{display:inline-flex;border:1px solid var(--line);padding:7px 14px;border-radius:30px;margin-top:20px;font-size:13px;color:var(--muted);line-height:20px}
.voice{display:flex;align-items:center;gap:10px;font-size:14px;line-height:20px}.voice img{width:34px;height:34px;border-radius:50%;object-fit:cover}.voice small{display:block;color:var(--muted);font-size:12px;margin-top:2px;line-height:16px}.model-name{font-size:12px;color:var(--muted);padding:4px 9px;border:1px solid var(--line);border-radius:6px;line-height:18px}
.tag{display:inline;border-radius:5px;color:var(--accent);background:var(--tint);padding:2px 5px;font-size:.88em}.audio-player{display:flex;align-items:center;gap:14px;margin-top:22px}.play{width:34px;height:34px;flex:none;display:flex;align-items:center;justify-content:center;border-radius:50%;border:0;background:var(--panel);color:var(--faint);padding:10px}.play svg{width:12px;height:12px}.wave{display:flex;align-items:center;justify-content:space-between;height:25px;gap:3px;flex:1;overflow:hidden;color:var(--faint);opacity:.48}.wave i{width:2px;min-width:2px;border-radius:3px;background:currentColor}.duration{font:12px/18px var(--mono);color:var(--muted)}.pending-label{font-size:12px;color:var(--muted);margin-top:6px;display:block;line-height:18px}
footer{border-top:1px solid var(--line);padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:40px}.footer-brand p{color:var(--muted);font-size:14px;margin-top:17px;line-height:22px}.footer-grid h3{font-size:14px;margin:3px 0 18px;line-height:20px}.footer-grid>div>a:not(.logo){display:block;color:var(--muted);font-size:14px;margin:10px 0;line-height:22px}.footer-bottom{display:flex;gap:22px;color:var(--faint);font-size:12px;margin-top:32px;padding-top:20px;border-top:1px solid var(--line);line-height:18px}.footer-bottom span:last-child{margin-left:auto}