:root{--canvas: #faf9f6;--canvas-soft: #f7f4ed;--surface: #fff;--surface-muted: #f7f7f4;--card: #f2f1ed;--card-border: rgba(20, 20, 19, .025);--ink: #141413;--ink-hover: #30302d;--body-c: #5f5c55;--subtle: #6f6b63;--hairline: #e2ded4;--hairline-strong: #c8c2b6;--brand: #145cff;--brand-accessible: #0b4edb;--brand-soft: #eaf0ff;--dark: #18181b;--dark-raised: #232326;--dark-line: #3f3f46;--dark-line-hover: #71717a;--dark-subtle: #a1a1aa;--dark-muted: #b7b7ba;--success: #1c7651;--success-bright: #3ecf8e;--warning: #9a6200;--error: #b43845;--wave: #07c160;--wave-soft: #2dd47e;--font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;--font-mono: ui-monospace, SFMono-Regular, "SF Mono", Consolas, Menlo, monospace;--radius-sm: 4px;--radius-md: 8px;--radius-pill: 999px;--shadow-hover: 0 12px 28px rgba(20, 20, 19, .08);--shadow-overlay: 0 12px 32px rgba(20, 20, 19, .12);--ease: cubic-bezier(.2, .8, .2, 1);--dur-fast: .12s;--dur-base: .18s;--dur-reveal: .6s;--container-w: 1140px;--header-h: 64px;--text: var(--ink);--text-2: var(--body-c);--text-3: var(--subtle);--accent: var(--brand);--accent-2: var(--brand-accessible);--danger: var(--error);--warn: var(--warning);--radius: var(--radius-md)}*{box-sizing:border-box}html,body{margin:0;padding:0}html{-webkit-text-size-adjust:100%}body{background:radial-gradient(1100px 480px at 50% -180px,#f2f1ed,transparent 70%),var(--canvas);color:var(--body-c);font-family:var(--font-sans);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}p{margin:0}svg{display:block}::selection{background:var(--brand-soft);color:var(--brand-accessible)}h1,h2,h3{margin:0;color:var(--ink);font-weight:600;line-height:1.2;letter-spacing:-.02em}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:2px}.container{max-width:var(--container-w);margin:0 auto;padding:0 24px}.section{padding-block:104px}.section--alt{background:var(--canvas-soft)}[id]{scroll-margin-top:84px}@media(prefers-reduced-motion:no-preference){html{scroll-behavior:smooth}}.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;font-weight:600;color:var(--subtle)}.eyebrow:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}.eyebrow .no{font:600 11px var(--font-mono);color:var(--brand);letter-spacing:.14em}.section-head{max-width:640px;margin-bottom:56px}.section-head h2{font-size:clamp(30px,3.3vw,44px);margin:14px 0 12px}.section-head .lead{font-size:17px;color:var(--body-c)}.section-head--center{margin-inline:auto;text-align:center}html.js [data-reveal]{opacity:0;transform:translateY(24px);transition:opacity var(--dur-reveal) var(--ease),transform var(--dur-reveal) var(--ease)}html.js [data-reveal].is-visible{opacity:1;transform:none}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:12px 20px;border:1px solid var(--hairline-strong);border-radius:var(--radius-md);background:var(--surface);color:var(--ink);font-family:inherit;font-size:14.5px;font-weight:600;line-height:1.2;cursor:pointer;transition:background var(--dur-base) var(--ease),border-color var(--dur-base) var(--ease),color var(--dur-base) var(--ease),transform var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease)}.btn:hover{border-color:var(--ink);background:var(--canvas);transform:translateY(-1px);box-shadow:var(--shadow-hover)}.btn svg{width:17px;height:17px;flex:none}.btn.primary{background:var(--ink);border-color:var(--ink);color:#faf9f6}.btn.primary:hover{background:var(--ink-hover);border-color:var(--ink-hover)}.btn.disabled{opacity:.45;pointer-events:none}.btn .hint{font-size:11px;font-weight:500;opacity:.65}.btn.sm{padding:8px 14px;font-size:13px}.btn.ghost{background:transparent}.btn.danger{color:var(--error);border-color:#b4384566;background:transparent}.btn.danger:hover{border-color:var(--error);background:#b438450f;box-shadow:none}.kbd{font-family:var(--font-mono);font-size:11.5px;color:var(--ink);background:var(--surface);border:1px solid var(--hairline-strong);border-bottom-width:2px;border-radius:var(--radius-sm);padding:1px 6px;white-space:nowrap}.site-header{position:sticky;top:0;z-index:50;background:#faf9f6d1;-webkit-backdrop-filter:saturate(1.4) blur(12px);backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid transparent;transition:border-color var(--dur-base) var(--ease)}.site-header.is-scrolled{border-bottom-color:var(--hairline)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}.nav{display:flex;align-items:center;gap:26px}.nav a{font-size:14px;color:var(--body-c);transition:color var(--dur-fast) var(--ease)}.nav a:hover{color:var(--ink)}.nav .nav-admin{padding:7px 14px;border:1px solid var(--hairline-strong);border-radius:var(--radius-pill);color:var(--ink);font-weight:600;transition:border-color var(--dur-base) var(--ease),background var(--dur-base) var(--ease),color var(--dur-fast) var(--ease)}.nav .nav-admin:hover{border-color:var(--ink);background:var(--surface)}.hero{padding:88px 0 24px;text-align:center}.eyebrow-pill{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:var(--ink);border:1px solid var(--hairline);border-radius:var(--radius-pill);background:var(--surface);padding:6px 14px;box-shadow:0 1px 2px #1414130a}.eyebrow-pill:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--wave);box-shadow:0 0 0 3px #07c16026}.hero h1{font-size:clamp(40px,5vw,64px);line-height:1.12;max-width:760px;margin:26px auto 18px}.hero .lead{max-width:640px;margin:0 auto 32px;font-size:17.5px}.hero-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px;margin-bottom:16px}.hero-actions .btn{padding:13px 24px;font-size:15px}.hero-meta{font:500 12px var(--font-mono);color:var(--subtle);letter-spacing:.08em}.hero-visual{position:relative;max-width:760px;margin:72px auto 44px}.mock{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-md);box-shadow:var(--shadow-overlay);text-align:left;overflow:hidden}.mock-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid var(--hairline);background:var(--surface-muted)}.mock-dot{width:10px;height:10px;border-radius:50%;background:var(--hairline-strong)}.mock-title{margin-left:10px;font:500 12px var(--font-mono);color:var(--subtle)}.mock-body{padding:22px 24px 84px;display:grid;gap:18px}.turn{display:flex;align-items:flex-start;gap:12px}.who{flex:none;margin-top:2px;font-size:11.5px;font-weight:600;color:var(--body-c);background:var(--surface);border:1px solid var(--hairline-strong);border-radius:var(--radius-pill);padding:2px 9px}.who-me{color:var(--brand-accessible);border-color:#145cff59;background:var(--brand-soft)}.turn p{font-size:14px;color:var(--ink);line-height:1.6}.caret{display:inline-block;width:2px;height:15px;margin-left:2px;vertical-align:-2px;background:var(--ink);animation:caret-blink 1.1s steps(1) infinite}@keyframes caret-blink{50%{opacity:0}}.voicebar{position:absolute;left:50%;bottom:-26px;transform:translate(-50%);display:flex;align-items:center;gap:14px;padding:10px 18px 10px 16px;background:var(--dark);border:1px solid var(--dark-line);border-radius:var(--radius-pill);box-shadow:0 18px 40px #14141347}.voicebar .wave{width:54px;height:18px;color:var(--wave-soft)}.voicebar-label{font-size:13px;font-weight:500;color:#f4f4f2;white-space:nowrap}.voicebar-icons{display:flex;gap:10px;padding-left:12px;border-left:1px solid var(--dark-line);color:var(--dark-subtle)}.voicebar-icons svg{width:15px;height:15px}.voicebar-bubble{position:absolute;left:50%;bottom:40px;margin-left:128px;padding:6px 11px;background:var(--ink);color:#faf9f6;font-size:12px;font-weight:500;border-radius:var(--radius-sm);box-shadow:var(--shadow-hover);white-space:nowrap}.voicebar-bubble:after{content:"";position:absolute;left:-4px;top:50%;width:8px;height:8px;background:var(--ink);transform:translateY(-50%) rotate(45deg)}.facts{border-block:1px solid var(--hairline);background:var(--surface)}.facts-row{display:grid;grid-template-columns:repeat(4,1fr)}.fact-chip{display:flex;align-items:center;justify-content:center;gap:9px;padding:18px 12px;font-size:13.5px;font-weight:600;color:var(--ink)}.fact-chip:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--brand)}.fact-chip+.fact-chip{border-left:1px solid var(--hairline)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.card{position:relative;padding:26px 24px 24px;background:var(--card);border-radius:var(--radius-sm);transition:background var(--dur-base) var(--ease),transform var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease)}.card:after{content:"";position:absolute;top:1px;right:1px;bottom:1px;left:1px;border:1px solid var(--card-border);border-radius:3px;pointer-events:none}.card:hover{background:var(--surface);transform:translateY(-4px);box-shadow:var(--shadow-hover)}.card-num{display:block;margin-bottom:14px;font:600 11px var(--font-mono);color:var(--brand);letter-spacing:.1em}.card h3{font-size:20px;letter-spacing:-.015em;margin-bottom:8px}.card p{font-size:14.5px}.steps{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(5,1fr);gap:32px 20px;counter-reset:step}.step{counter-increment:step;border-top:1px solid var(--hairline-strong);padding-top:16px}.step:before{content:"0" counter(step);display:block;margin-bottom:10px;font:600 11px var(--font-mono);color:var(--brand);letter-spacing:.12em}.step h3{font-size:15.5px;letter-spacing:-.01em;margin-bottom:6px}.step p{font-size:13.5px}.section--dark{background:var(--dark)}.section--dark h2{color:#f4f4f2}.section--dark .eyebrow{color:var(--dark-muted)}.section--dark .eyebrow:before{background:var(--success-bright)}.section--dark .eyebrow .no{color:var(--success-bright)}.section--dark .section-head .lead{color:var(--dark-muted)}.flow{margin-top:56px}.flow-row{display:grid;grid-template-columns:64px 220px 1fr;gap:8px 18px;align-items:baseline;padding:22px 0;border-top:1px solid var(--dark-line)}.flow-row:last-of-type{border-bottom:1px solid var(--dark-line)}.flow-no{font:600 11px var(--font-mono);color:var(--success-bright);letter-spacing:.12em}.flow-k{font-size:16px;font-weight:600;color:#f4f4f2;letter-spacing:-.01em}.flow-v{font-size:14px;color:var(--dark-muted)}.flow-end{margin-top:34px;display:flex;align-items:center;flex-wrap:wrap;gap:10px 16px;padding:22px 26px;background:var(--dark-raised);border:1px solid var(--dark-line);border-radius:var(--radius-md)}.flow-end svg{width:18px;height:18px;color:var(--success-bright);flex:none}.flow-end strong{font-size:17px;font-weight:600;color:var(--success-bright);letter-spacing:-.01em}.flow-end span{font-size:13.5px;color:var(--dark-muted)}.faq-list{max-width:760px;margin:0 auto}.faq-item{background:var(--card);border-radius:var(--radius-sm);transition:background var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease)}.faq-item+.faq-item{margin-top:10px}.faq-item[open]{background:var(--surface);box-shadow:var(--shadow-hover)}.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 22px;font-size:15.5px;font-weight:600;color:var(--ink);letter-spacing:-.01em;cursor:pointer;list-style:none}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:"+";flex:none;font-size:20px;font-weight:400;line-height:1;color:var(--subtle);transition:transform var(--dur-base) var(--ease)}.faq-item[open] summary:after{transform:rotate(45deg)}.faq-item .faq-a{padding:0 22px 20px;font-size:14.5px;max-width:640px}.cta{background:var(--canvas-soft)}.vercard{max-width:560px;margin:0 auto;padding:24px 26px;background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-md);box-shadow:var(--shadow-overlay);text-align:left}.vercard .row{display:flex;align-items:center;justify-content:space-between;gap:12px}.vercard .verno{font-size:14px;color:var(--body-c)}.vercard .verno b{margin-left:6px;font-size:22px;font-weight:700;color:var(--ink);letter-spacing:-.02em}.vercard .tag{font:600 11px var(--font-mono);color:var(--brand-accessible);background:var(--brand-soft);border-radius:var(--radius-pill);padding:3px 10px;letter-spacing:.06em}.vercard .notes{margin-top:12px;font-size:13.5px;color:var(--subtle);white-space:pre-wrap}.dl{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}.dl .btn{flex:1;min-width:190px}.site-footer{background:var(--card);border-top:1px solid var(--hairline);padding:56px 0 36px}.footer-cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:48px}.footer-brand .brand{margin-bottom:12px}.footer-brand>p{font-size:13.5px;max-width:300px}.footer-brand .hero-meta{margin-top:14px}.footer-h{margin-bottom:14px;font:600 11px var(--font-mono);color:var(--subtle);letter-spacing:.16em;text-transform:uppercase}.footer-col a{display:block;padding:4px 0;font-size:14px;color:var(--body-c);transition:color var(--dur-fast) var(--ease)}.footer-col a:hover{color:var(--ink)}.footer-base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px 16px;padding-top:22px;border-top:1px solid var(--hairline);font:500 12px var(--font-mono);color:var(--subtle)}.admin-wrap{max-width:860px;margin:0 auto;padding:40px 24px 80px}.topbar{display:flex;align-items:center;justify-content:space-between;padding:4px 0 20px;border-bottom:1px solid var(--hairline)}.brand{display:inline-flex;align-items:center;gap:10px;font-size:16px;font-weight:600;color:var(--ink);letter-spacing:-.01em}.logo{flex:none;width:26px;height:26px;border-radius:8px}.links a{margin-left:22px;font-size:14px;color:var(--body-c);transition:color var(--dur-fast) var(--ease)}.links a:first-child{margin-left:0}.links a:hover{color:var(--ink)}.panel{background:var(--surface);border:1px solid var(--hairline);border-radius:var(--radius-md);padding:24px;margin-bottom:20px}.panel h2{font-size:18px;margin:0 0 4px}.panel .dim{margin:0 0 18px;font-size:13px;color:var(--subtle)}label.fld{display:block;margin-bottom:14px}label.fld span{display:block;margin-bottom:6px;font-size:12.5px;color:var(--body-c)}input,textarea{width:100%;padding:10px 12px;background:var(--surface-muted);border:1px solid var(--hairline);border-radius:var(--radius-sm);color:var(--ink);font-family:inherit;font-size:14px;transition:border-color var(--dur-base) var(--ease),box-shadow var(--dur-base) var(--ease)}input:focus,textarea:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}textarea{min-height:68px;resize:vertical}.actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px}.msg{font-size:13px;padding:8px 0;min-height:20px}.msg.ok{color:var(--success)}.msg.err{color:var(--error)}table{width:100%;border-collapse:collapse;font-size:13.5px}th,td{padding:10px 8px;border-bottom:1px solid var(--hairline);text-align:left;vertical-align:top}th{font-size:12px;font-weight:500;color:var(--subtle)}.badge{font:600 11px var(--font-mono);color:var(--brand-accessible);background:var(--brand-soft);border-radius:var(--radius-pill);padding:2px 9px}.tblink{color:var(--body-c);word-break:break-all}.checkline{display:flex;align-items:center;gap:8px;margin-bottom:14px;font-size:13px;color:var(--body-c)}.checkline input{width:auto}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}.hidden{display:none}@media(max-width:760px){.section{padding-block:86px}.nav{gap:16px}.nav .nav-lg{display:none}.hero{padding:64px 0 16px}.hero-visual{margin:56px auto 40px}.voicebar-bubble{display:none}.mock-body{padding:16px 16px 72px;gap:14px}.facts-row{grid-template-columns:1fr 1fr}.fact-chip+.fact-chip{border-left:none}.fact-chip:nth-child(2n){border-left:1px solid var(--hairline)}.fact-chip:nth-child(n+3){border-top:1px solid var(--hairline)}.cards{grid-template-columns:1fr}.steps{grid-template-columns:1fr;gap:20px}.flow-row{grid-template-columns:44px 1fr}.flow-v{grid-column:2}.footer-cols{grid-template-columns:1fr;gap:28px}.footer-base{margin-bottom:0}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}html.js [data-reveal]{opacity:1;transform:none;transition:none}.caret{animation:none}.btn:hover,.card:hover{transform:none}}@media(max-width:640px){.grid2{grid-template-columns:1fr}}