:root{--brand: #3b5bfd;--brand-light: #5b7bff;--ink: #0e1220;--accent: #00bfa5;--accent-light: #00d4b4;--text: #1f2329;--text-sub: #646a73;--text-muted: #8a919c;--surface: #ffffff;--surface-alt: #f6f8fb;--surface-elevated: #ffffff;--line: #ebedf0;--line-strong: #d5d9e0;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 2px 8px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .12);--ease-out: cubic-bezier(.22, 1, .36, 1);--ease-in-out: cubic-bezier(.77, 0, .175, 1);--ease-drawer: cubic-bezier(.32, .72, 0, 1);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-full: 9999px;--font-display: "SF Pro Display", -apple-system, "PingFang SC", system-ui, sans-serif;--font-body: -apple-system, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;--font-mono: "SF Mono", "JetBrains Mono", "Menlo", monospace;--font: var(--font-body);--container: 1200px;--hero-bg: #0e1220}[data-theme=dark]{--brand: #5b7bff;--brand-light: #7b9bff;--ink: #0a0e1a;--accent: #00d4b4;--accent-light: #00e6c5;--text: #e4e7ed;--text-sub: #9ca3af;--text-muted: #717a86;--surface: #131826;--surface-alt: #1a2033;--surface-elevated: #1e2538;--line: #2a3142;--line-strong: #3a4258;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 8px 24px rgba(0, 0, 0, .4);--shadow-lg: 0 16px 48px rgba(0, 0, 0, .5);--hero-bg: #0a0e1a}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}@media (prefers-reduced-motion: no-preference){html{scroll-behavior:smooth}}body{font-family:var(--font-body);color:var(--text);background:var(--surface);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .3s var(--ease-out),color .3s var(--ease-out)}img{display:block;max-width:100%;height:auto}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none}::selection{background:#3b5bfd33}.site{min-height:100vh;display:flex;flex-direction:column;background:var(--surface);overflow-x:hidden}main{flex:1}.section-header{text-align:center;margin-bottom:48px}.section-header h2{font-family:var(--font-display);font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;color:var(--text);letter-spacing:-.02em;line-height:1.2}.section-sub{margin-top:12px;font-size:1.0625rem;color:var(--text-sub);line-height:1.6}.btn{position:relative;isolation:isolate;display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 32px;border-radius:var(--radius-sm);font-size:16px;font-weight:500;text-decoration:none;cursor:pointer;border:1px solid transparent;background:none;transition:background .16s var(--ease-out),border-color .16s var(--ease-out)}.btn:active{transform:scale(.97);transition:transform .1s ease-out}.btn.primary{background:var(--surface);color:var(--ink);font-weight:600}[data-theme=dark] .btn.primary{background:var(--brand);color:#fff}.btn.ghost{border-color:#ffffff80;color:#fff}.btn-nav{padding:8px 20px;font-size:14px;background:var(--brand);color:#fff;font-weight:600}@media (hover: hover) and (pointer: fine){.btn.primary:hover{background:var(--surface-alt)}.btn-nav:hover{background:var(--brand-light)}.btn.ghost:hover{border-color:#fff;background:#ffffff0f}}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.announcement{padding:10px 24px;text-align:center;font-size:14px;color:#fff;background:var(--accent);font-weight:500}.navbar{position:sticky;top:0;z-index:100;background:#fffc;backdrop-filter:blur(20px) saturate(180%);-webkit-backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid transparent;transition:border-color .2s var(--ease-out),background .3s var(--ease-out)}[data-theme=dark] .navbar{background:#131826cc}.navbar.scrolled{border-bottom-color:var(--line)}.nav-inner{max-width:var(--container);margin:0 auto;padding:0 24px;height:64px;display:flex;align-items:center;justify-content:space-between;gap:16px}.nav-brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--text)}.nav-brand img{width:36px;height:36px;border-radius:9px}.nav-links{display:flex;gap:32px;margin-left:auto;margin-right:16px}.nav-links a{font-size:15px;color:var(--text-sub);transition:color .15s var(--ease-out);position:relative}.nav-links a:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--brand);border-radius:1px;transition:width .2s var(--ease-out)}@media (hover: hover) and (pointer: fine){.nav-links a:hover{color:var(--text)}.nav-links a:hover:after{width:100%}}.nav-actions{display:flex;align-items:center;gap:12px}.theme-toggle{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:var(--radius-sm);color:var(--text-sub);transition:color .15s var(--ease-out),background .15s var(--ease-out)}@media (hover: hover) and (pointer: fine){.theme-toggle:hover{color:var(--text);background:var(--surface-alt)}}.nav-burger{display:none;color:var(--text);padding:4px}.nav-mobile{overflow:hidden;display:flex;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--line)}.nav-mobile a{padding:14px 24px;font-size:15px;color:var(--text-sub);border-bottom:1px solid var(--line)}.nav-mobile a:last-child{border-bottom:none}@media (max-width: 768px){.nav-links{display:none}.nav-burger{display:block}.btn-nav{display:none}}.hero{position:relative;min-height:100vh;display:flex;align-items:center;color:#fff;padding:96px 24px 80px;background:var(--hero-bg);overflow:hidden}.hero-grid{position:relative;z-index:2;width:100%;max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:1.05fr .95fr;gap:72px;align-items:center}.hero-content{text-align:left}.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:500;color:#ffffff8c;letter-spacing:.04em;margin-bottom:22px}.hero-eyebrow-dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}.hero-title{font-family:var(--font-display);font-size:clamp(2.75rem,5.5vw,4.25rem);font-weight:800;letter-spacing:-.03em;line-height:1.04}.hero-slogan{margin-top:20px;font-size:clamp(1.0625rem,1.8vw,1.25rem);color:#ffffffb8;line-height:1.6;font-weight:400;max-width:30ch}.hero-badges{margin-top:28px;display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-start}.badge{display:inline-flex;align-items:center;gap:6px;padding:6px 14px;border-radius:var(--radius-full);font-size:13px;color:#ffffffd1;background:#ffffff0f;border:1px solid rgba(255,255,255,.12)}.badge-icon{display:flex}.badge-icon svg{width:16px;height:16px}.hero-actions{margin-top:36px;display:flex;gap:14px;justify-content:flex-start;flex-wrap:wrap}.hero-visual{position:relative;display:flex;justify-content:center}.phone-mockup{position:relative;width:280px;border-radius:46px;background:#000;padding:10px;box-shadow:0 32px 80px #00000080,0 0 0 1px #ffffff14}.phone-notch{position:absolute;top:10px;left:50%;transform:translate(-50%);width:96px;height:22px;background:#000;border-radius:0 0 14px 14px;z-index:2}.phone-screen{display:block;width:100%;border-radius:36px}.hero-scroll-hint{position:absolute;bottom:32px;left:50%;transform:translate(-50%);color:#fff6;display:flex;justify-content:center}@media (max-width: 900px){.hero{padding:72px 20px 64px}.hero-grid{grid-template-columns:1fr;gap:48px}.hero-content{text-align:center}.hero-slogan{margin-left:auto;margin-right:auto}.hero-badges,.hero-actions{justify-content:center}.hero-visual{margin-top:8px}.phone-mockup{width:240px}.hero-scroll-hint{display:none}}.stats{padding:72px 24px;background:var(--surface);border-bottom:1px solid var(--line)}.stats-grid{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px 40px;align-items:center}.stat-item{text-align:left;border-left:2px solid var(--line);padding-left:20px}.stat-item.featured{border-left:3px solid var(--brand);padding-left:24px}.stat-item.featured .stat-value{font-size:clamp(2.75rem,5vw,4rem);color:var(--text)}.stat-item.featured .stat-label{font-size:1.0625rem;color:var(--text)}.stat-value{font-size:clamp(1.75rem,3vw,2.25rem);font-weight:800;color:var(--text);font-family:var(--font-mono);letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums}.stat-unit{font-size:.5em;margin-left:4px;font-weight:600;color:var(--text-sub)}.stat-label{margin-top:10px;font-size:.9375rem;color:var(--text-sub);font-weight:500}@media (max-width: 768px){.stats-grid{grid-template-columns:repeat(2,1fr);gap:32px 24px}.stat-item.featured{grid-column:span 2}}@media (max-width: 640px){.stats-grid{grid-template-columns:repeat(2,1fr);gap:40px 20px}}.features{padding:120px 24px;background:var(--surface-alt)}.feature-grid{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:repeat(6,1fr);gap:16px 24px}.feature-card{grid-column:span 2}.feature-card:first-child{grid-column:span 4;grid-row:span 2;display:flex;flex-direction:column;justify-content:center}.feature-card:last-child{grid-column:span 6}@media (max-width: 768px){.feature-card,.feature-card:first-child,.feature-card:last-child{grid-column:span 6;grid-row:auto}}.feature-card{position:relative;padding:32px 28px;border:1px solid var(--line);border-radius:var(--radius-sm);text-align:left;background:var(--surface-elevated);transition:border-color .2s var(--ease-out)}@media (hover: hover) and (pointer: fine){.feature-card:hover{border-color:var(--brand)}.feature-card:hover .feature-icon{color:var(--text);background:transparent}}.feature-icon{width:32px;height:32px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--text);background:transparent;margin-bottom:16px;transition:color .2s var(--ease-out),background-color .2s var(--ease-out)}[data-theme=dark] .feature-icon{background:transparent}.feature-card h3{font-size:1.25rem;font-weight:700;color:var(--text);letter-spacing:-.01em}.feature-card p{margin-top:12px;color:var(--text-sub);line-height:1.7;font-size:.9375rem}.showcase{padding:80px 24px;background:var(--surface)}.showcase-grid{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px}.showcase-item{display:flex;gap:24px;align-items:flex-start;padding:28px;border-radius:0;background:var(--surface-alt);border-left:3px solid var(--brand);transition:border-color .2s var(--ease-out),background .2s var(--ease-out)}.showcase-item.alt{flex-direction:row-reverse}@media (hover: hover) and (pointer: fine){.showcase-item:hover{border-left-color:var(--brand);background:var(--surface-elevated)}}.showcase-visual{flex-shrink:0}.showcase-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;color:var(--text)}.showcase-text h3{font-size:1.125rem;font-weight:700;color:var(--text);letter-spacing:-.01em}.showcase-text p{margin-top:8px;color:var(--text-sub);line-height:1.6;font-size:.9375rem}@media (max-width: 640px){.showcase-item,.showcase-item.alt{flex-direction:column;gap:16px}}.download{padding:100px 24px;text-align:center;background:var(--surface-alt)}.download-grid{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:20px}.dl-card{background:var(--surface-elevated);border:1px solid var(--line);border-radius:var(--radius-md);padding:28px 16px 24px;display:flex;flex-direction:column;align-items:center;gap:8px;transition:border-color .2s var(--ease-out)}@media (hover: hover) and (pointer: fine){.dl-card:hover{border-color:var(--line-strong)}}.dl-icon{color:var(--text);margin-bottom:4px}.dl-name{font-size:1rem;font-weight:700;color:var(--text)}.dl-meta{font-size:.8125rem;color:var(--text-muted);min-height:18px}.dl-btn{margin-top:12px;padding:8px 28px;font-size:.875rem;background:var(--text);color:#fff;font-weight:600;border-radius:var(--radius-sm);transition:background .16s var(--ease-out)}@media (hover: hover) and (pointer: fine){.dl-btn:hover{background:var(--text-sub)}}.dl-btn.disabled{background:var(--surface-alt);color:var(--text-muted);cursor:default;font-weight:400}.dl-note{font-size:.75rem;color:var(--text-muted);text-align:center}.faq{padding:96px 24px;background:var(--surface)}.faq-list{max-width:800px;margin:0 auto}.faq-item{border-bottom:1px solid var(--line);overflow:hidden}.faq-item:first-child{border-top:1px solid var(--line)}.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 4px;text-align:left;font-size:1.0625rem;font-weight:500;color:var(--text);transition:color .15s var(--ease-out)}@media (hover: hover) and (pointer: fine){.faq-question:hover{color:var(--brand)}}.faq-chevron{flex-shrink:0;color:var(--text-muted);transition:transform .2s var(--ease-out),color .2s var(--ease-out);display:flex}.faq-chevron.rotated{transform:rotate(180deg);color:var(--brand)}.faq-answer{overflow:hidden}.faq-answer p{padding:0 4px 20px;color:var(--text-sub);line-height:1.7;font-size:.9375rem}.footer{margin-top:auto;padding:64px 24px 32px;background:var(--ink);color:#fff9}[data-theme=dark] .footer{background:#060810}.footer-grid{max-width:var(--container);margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.08)}.footer-brand{display:flex;align-items:center;gap:12px}.footer-brand img{width:40px;height:40px;border-radius:10px}.footer-name{font-size:1.125rem;font-weight:700;color:#fff}.footer-tag{font-size:.8125rem;color:#ffffff80;margin-top:2px}.footer-col h4{font-size:.875rem;font-weight:600;color:#fffc;margin-bottom:16px;letter-spacing:.02em;text-transform:uppercase}.footer-col ul{list-style:none}.footer-col li{margin-bottom:10px}.footer-col a{font-size:.875rem;color:#ffffff80;transition:color .15s var(--ease-out)}@media (hover: hover) and (pointer: fine){.footer-col a:hover{color:#fff}}.footer-bottom{max-width:var(--container);margin:0 auto;padding-top:28px;text-align:center}.footer-legal{display:flex;gap:20px;justify-content:center;flex-wrap:wrap;margin-bottom:12px;font-size:.8125rem}.footer-legal a{color:#fff6;text-decoration:none;display:inline-flex;align-items:center;gap:4px;transition:color .15s var(--ease-out)}.footer-mail-icon svg{width:14px;height:14px}@media (hover: hover) and (pointer: fine){.footer-legal a:hover{color:#fffc}}.copyright{font-size:.8125rem;color:#ffffff4d}@media (max-width: 768px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}.footer-brand{grid-column:1 / -1}}@media (max-width: 480px){.footer-grid{grid-template-columns:1fr}}.legal-page{min-height:100vh;background:var(--surface-alt);color:var(--text)}.legal-header{height:68px;display:flex;align-items:center;padding:0 28px;background:var(--surface);border-bottom:1px solid var(--line)}.legal-brand{display:inline-flex;align-items:center;gap:10px;color:var(--text);text-decoration:none;font-size:18px;font-weight:700}.legal-brand img{width:36px;height:36px;border-radius:9px}.legal-card{width:min(920px,calc(100% - 32px));min-height:60vh;margin:36px auto;padding:48px 64px 64px;background:var(--surface-elevated);border:1px solid var(--line);border-radius:var(--radius-md);box-shadow:var(--shadow-lg)}.legal-title{padding-bottom:28px;margin-bottom:30px;text-align:center;border-bottom:1px solid var(--line)}.legal-title h1{font-size:34px;color:var(--text);letter-spacing:-.02em}.legal-title p{display:flex;justify-content:center;gap:24px;margin-top:12px;color:var(--text-sub);font-size:14px}.legal-content h1,.legal-content h2,.legal-content h3{color:var(--text);line-height:1.45}.legal-content h1{margin:34px 0 16px;font-size:26px}.legal-content h2{margin:32px 0 14px;font-size:22px}.legal-content h3{margin:24px 0 12px;font-size:18px}.legal-content p,.legal-content li{color:var(--text-sub);font-size:16px;line-height:1.9;overflow-wrap:anywhere}.legal-content li{margin-left:24px;padding-left:3px}.legal-spacer{height:12px}.legal-status{padding:100px 0;text-align:center;color:var(--text-sub)}.legal-status.error{color:#d14343}.legal-footer{padding:0 20px 36px;text-align:center;color:var(--text-muted);font-size:13px}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}@media (max-width: 640px){.hero{padding:72px 20px 60px;min-height:auto}.hero-title{font-size:2.25rem}.hero-badges{gap:8px}.badge{font-size:12px;padding:5px 12px}.stats{padding:48px 20px}.features,.showcase,.download,.faq{padding:64px 20px}.section-header{margin-bottom:36px}.legal-card{width:100%;margin:0;padding:32px 20px 48px;border:0;border-radius:0;box-shadow:none}.legal-title h1{font-size:28px}.legal-title p{flex-direction:column;gap:4px}.legal-content h2{font-size:20px}.legal-content p,.legal-content li{font-size:15px;line-height:1.85}.legal-footer{padding-top:28px}}