:root{color-scheme:light;color:var(--ink-body);background:var(--canvas);font-family:var(--font-sans);font-synthesis:none;text-rendering:optimizeLegibility;--brand: #2f6bff;--brand-strong: #245de0;--brand-soft: #edf4ff;--brand-wash: #e8f0ff;--brand-line: #c8d8ff;--brand-focus: rgba(47, 107, 255, .55);--kicker: #2878ff;--grad-blue: linear-gradient(100deg, #64d2ff 0%, #0a84ff 56%, #0a5dff 100%);--night-hi: #223046;--night: #16202f;--night-lo: #0c1220;--night-line: rgba(255, 255, 255, .13);--night-ink-soft: #aebcd2;--night-ink-faint: #8fa1ba;--wave: #4f86f7;--wave-complete: #10b981;--wave-idle: #94a3b8;--wave-cancel: #f59e0b;--wave-error: #e11d48;--success: #12b76a;--success-bg: #eaf8f0;--success-ink: #24785f;--warning: #f79009;--warning-bg: #fff6d8;--warning-ink: #8a6700;--danger: #b42318;--violet: #7f56d9;--violet-bg: #f2edfc;--ink: #101828;--ink-body: #1f2937;--ink-secondary: #344054;--muted: #667085;--subtle: #98a2b3;--line: #e4e7ec;--line-strong: #d0d5dd;--surface: #ffffff;--surface-sunken: #f8fafc;--canvas: #f6f8fb;--r-xs: 9px;--r-sm: 11px;--r-md: 14px;--r-lg: 18px;--r-xl: 22px;--r-2xl: 24px;--r-full: 999px;--shadow-float: 0 1px 1px rgba(15, 23, 42, .06), 0 2px 3px rgba(15, 23, 42, .1), inset 0 1px 0 rgba(255, 255, 255, .96);--shadow-card: 0 2px 4px rgba(16, 24, 40, .04), 0 8px 18px rgba(40, 57, 87, .07);--shadow-card-lift: 0 4px 8px rgba(16, 24, 40, .05), 0 14px 28px rgba(40, 57, 87, .1);--shadow-panel: 0 12px 30px rgba(50, 64, 84, .08);--shadow-primary: 0 7px 16px rgba(47, 107, 255, .16);--shadow-primary-hover: 0 9px 20px rgba(47, 107, 255, .2);--shadow-modal: 0 18px 48px rgba(47, 67, 92, .11), 0 2px 8px rgba(47, 67, 92, .05);--focus-ring: 0 0 0 3px rgba(47, 107, 255, .12);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;--type-display: clamp(50px, 5.8vw, 78px);--type-page-title: clamp(40px, 4.8vw, 60px);--type-section-title: clamp(30px, 3.3vw, 42px);--type-cta-title: clamp(32px, 4vw, 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a{color:var(--muted);transition:color var(--dur-fast) ease}.site-footer nav a:hover{color:var(--brand)}.site-footer small{grid-column:1 / -1;margin-top:10px;padding-top:20px;border-top:1px solid var(--line);color:var(--subtle)}.plan-skeleton{display:flex;flex-direction:column;gap:16px;min-height:450px;padding:32px;border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow-panel)}.skeleton-line{height:14px;border-radius:var(--r-full);background:linear-gradient(90deg,#edf0f5 25%,#f6f8fb,#edf0f5 65%);background-size:240% 100%;animation:skeleton-shimmer 1.4s ease-in-out infinite}.skeleton-line.title{width:42%;height:22px}.skeleton-line.quota{width:68%;height:20px;margin-top:22px}.skeleton-line.item{width:var(--w, 80%)}@keyframes skeleton-shimmer{0%{background-position:120% 0}to{background-position:-120% 0}}@media (prefers-reduced-motion: no-preference){[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity var(--dur-reveal) var(--ease-out),transform var(--dur-reveal) var(--ease-out);transition-delay:calc(var(--reveal-i, 0) * 90ms)}[data-reveal].is-revealed{opacity:1;transform:none}}@media print{[data-reveal]{opacity:1!important;transform:none!important}}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}@media (max-width: 900px){.site-header{grid-template-columns:1fr auto}.site-nav,.language-button-desktop{display:none}.language-button-mobile{display:inline-flex;min-width:58px;min-height:40px;align-items:center;justify-content:center;padding-inline:14px;border:1px solid #d6dde8;background:var(--surface)}.menu-toggle{display:grid}.page-content,.site-footer{width:min(100% - 32px,760px)}.site-footer{grid-template-columns:1fr 1fr}}@media (max-width: 560px){:root{--gutter: 32px}.site-header{min-height:68px}.brand img{width:34px;height:34px;border-radius:10px}.brand small,.header-actions .nav-account{display:none}.site-footer{grid-template-columns:1fr}}.hero-section{position:relative;display:grid;grid-template-columns:minmax(0,.96fr) minmax(0,1.04fr);align-items:center;gap:48px;min-height:585px;padding:64px 0 58px}.hero-copy{position:relative;z-index:3}.hero-copy h1{margin:0;color:var(--ink);font-size:var(--type-display);line-height:var(--leading-display);font-weight:var(--weight-bold);letter-spacing:var(--tracking-display);text-wrap:balance}html[lang=en] .hero-copy h1{letter-spacing:-.05em}.hero-grad{display:block;width:fit-content;color:var(--brand);text-wrap:balance}.hero-copy .page-lead{max-width:570px;margin-top:25px;font-size:var(--type-body-lg);font-weight:var(--weight-regular)}.hero-shortcut{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:27px 0 0;color:var(--muted);font-size:var(--type-body-sm)}.shortcut-keys{display:inline-flex;gap:5px}.shortcut-keys .kbd{transition:transform .12s ease,border-width .12s ease,box-shadow .12s ease}.hero-section[data-demo-state=shortcut] .shortcut-keys .kbd,.hero-section[data-demo-state=finish] .shortcut-keys .kbd{transform:translateY(2px);border-bottom-width:1px;box-shadow:inset 0 1px 3px #1018281a}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:31px}.hero-trust{display:flex;flex-wrap:wrap;gap:8px 10px;margin-top:28px;padding-top:16px;border-top:1px solid rgba(208,213,221,.82)}.hero-trust .status-dot{padding:7px 10px;border:1px solid rgba(208,213,221,.7);border-radius:var(--r-full);color:var(--ink-secondary);background:#ffffff94;font-size:var(--type-caption)}.hero-trust .tone-success{border-color:#12b76a33;background:#eaf8f0b8}.hero-trust .tone-brand{border-color:#2f6bff29;background:#edf4ffc7}.hero-trust .tone-violet{border-color:#7f56d929;background:#f2edfcc7}.hero-stage{position:relative;width:100%;padding:52px 8px 40px}.hero-glow{position:absolute;top:-25%;right:-28%;bottom:-25%;left:-28%;background:radial-gradient(44% 42% at 74% 27%,rgba(47,107,255,.18),transparent 73%),radial-gradient(43% 38% at 18% 82%,rgba(100,210,255,.11),transparent 74%);filter:blur(2px);pointer-events:none}.stage-window{position:relative;width:min(545px,100%);margin-left:auto}.mock-window{position:relative;z-index:1;overflow:hidden;border:1px solid rgba(218,225,235,.95);border-radius:20px;background:#fff;box-shadow:0 24px 55px #3240541f,0 2px 7px #1018280a}.mock-titlebar{display:flex;align-items:center;gap:7px;padding:14px 17px;border-bottom:1px solid #edf0f4}.mock-titlebar i{width:11px;height:11px;border-radius:var(--r-full)}.mock-titlebar i:nth-child(1){background:#ff5f57}.mock-titlebar i:nth-child(2){background:#febc2e}.mock-titlebar i:nth-child(3){background:#28c840}.mock-titlebar 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#dde3ec;border-radius:12px;background:var(--surface-sunken);transition:border-color var(--dur-med) ease,box-shadow var(--dur-med) ease,background var(--dur-med) ease}.mock-input-leading{display:grid;flex:0 0 auto;place-items:center;width:27px;height:27px;margin-top:1px;border-radius:8px;color:var(--subtle);background:#f1f4f8}.mock-input-text{flex:1;min-width:0}.mock-input-placeholder{color:var(--subtle)}.hero-stage[data-state=recording] .mock-input,.hero-stage[data-state=processing] .mock-input{border-color:#2f6bff80;background:#fff;box-shadow:0 0 0 3px #2f6bff1a}.hero-stage[data-state=recording] .mock-input-leading,.hero-stage[data-state=processing] .mock-input-leading{color:var(--brand);background:var(--brand-wash)}.hero-stage[data-state=done] .mock-input{border-color:#10b9816b;background:#fff}.hero-stage[data-state=done] 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