:root{--color-bg: #ffffff;--color-bg-warm: #fafaf9;--color-bg-cool: #f8fafc;--color-ink: #0c0a09;--color-ink-secondary: #44403c;--color-ink-tertiary: #78716c;--color-ink-muted: #a8a29e;--color-border: #e7e5e4;--color-border-light: #f5f5f4;--color-accent: #1c1917;--color-accent-hover: #0c0a09;--color-accent-light: #f5f5f4;--color-green: #10b981;--color-green-bg: #ecfdf5;--color-amber: #f59e0b;--color-amber-bg: #fffbeb;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--space-20: 80px;--space-24: 96px;--space-32: 128px;--radius-sm: 6px;--radius: 10px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .04);--shadow: 0 1px 3px 0 rgb(0 0 0 / .06), 0 1px 2px -1px rgb(0 0 0 / .04);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .05), 0 2px 4px -2px rgb(0 0 0 / .03);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .06), 0 4px 6px -4px rgb(0 0 0 / .02);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .08), 0 8px 10px -6px rgb(0 0 0 / .03)}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:80px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-ink);line-height:1.6;overflow-x:hidden}.site{min-height:100vh;display:flex;flex-direction:column}:focus-visible{outline:2px solid var(--color-ink-tertiary);outline-offset:2px}.btn:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.top-nav{position:fixed;top:0;left:0;right:0;z-index:100;height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 var(--space-6);background:#ffffffd9;-webkit-backdrop-filter:blur(12px) saturate(1.5);backdrop-filter:blur(12px) saturate(1.5);border-bottom:1px solid transparent;transition:border-color .3s ease}.top-nav.scrolled{border-bottom-color:var(--color-border)}.nav-brand{font-size:18px;font-weight:700;letter-spacing:-.02em;color:var(--color-ink);text-decoration:none;display:flex;align-items:center;gap:var(--space-2)}.nav-brand:before{content:"";width:28px;height:28px;background:linear-gradient(135deg,var(--color-accent) 0%,var(--color-ink-secondary) 100%);border-radius:7px;display:block}.nav-links{display:flex;align-items:center;gap:var(--space-6)}.nav-links a{font-size:14px;font-weight:500;color:var(--color-ink-tertiary);text-decoration:none;transition:color .2s ease;position:relative}.nav-links a:hover{color:var(--color-ink)}.nav-links a:after{content:"";position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--color-accent);transition:width .3s ease}.nav-links a:hover:after{width:100%}.nav-actions{display:flex;align-items:center;gap:var(--space-3)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:10px 20px;border-radius:var(--radius);font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;border:none;transition:all .2s cubic-bezier(.4,0,.2,1);text-decoration:none}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover{background:var(--color-accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-secondary{background:transparent;color:var(--color-ink-secondary);border:1px solid var(--color-border)}.btn-secondary:hover{border-color:var(--color-ink-tertiary);background:var(--color-bg-warm)}.btn-ghost{background:transparent;color:var(--color-ink-tertiary);padding:8px 12px}.btn-ghost:hover{color:var(--color-ink)}.btn-lg{padding:14px 28px;font-size:15px}.hero{padding-top:calc(64px + var(--space-24));padding-bottom:var(--space-24);text-align:center;position:relative;overflow:hidden}.hero-bg{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,var(--color-bg-cool) 0%,var(--color-bg) 100%);z-index:-1}.hero-bg:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:800px;height:600px;background:radial-gradient(ellipse at center,rgba(0,0,0,.03) 0%,transparent 70%);pointer-events:none}.hero-content{max-width:800px;margin:0 auto;padding:0 var(--space-6)}.hero-badge{display:inline-flex;align-items:center;gap:var(--space-2);padding:6px 14px;border-radius:var(--radius-full);border:1px solid var(--color-border);background:var(--color-bg);font-size:13px;font-weight:500;color:var(--color-ink-tertiary);margin-bottom:var(--space-6)}.hero-badge:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--color-green);animation:pulse 2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.hero h1{font-size:clamp(40px,5.5vw,64px);line-height:1.1;letter-spacing:-.03em;font-weight:700;margin-bottom:var(--space-6);text-wrap:balance}.hero-description{font-size:clamp(16px,2vw,19px);line-height:1.7;color:var(--color-ink-tertiary);max-width:640px;margin:0 auto var(--space-8);text-wrap:pretty}.hero-cta{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap;margin-bottom:var(--space-12)}.hero-note{font-size:13px;color:var(--color-ink-muted)}.hero-product{position:relative;max-width:1100px;margin:0 auto;padding:0 var(--space-6)}.hero-product-frame{border-radius:var(--radius-xl);border:1px solid var(--color-border);background:var(--color-bg-warm);overflow:hidden;box-shadow:var(--shadow-xl)}.hero-product-frame img{width:100%;display:block}.section{padding:var(--space-24) var(--space-6)}.section-header{text-align:center;max-width:640px;margin:0 auto var(--space-12)}.section-label{font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--color-ink-muted);margin-bottom:var(--space-3);font-family:var(--font-mono)}.section-title{font-size:clamp(28px,3.5vw,40px);line-height:1.15;letter-spacing:-.02em;font-weight:700;margin-bottom:var(--space-4)}.section-desc{font-size:17px;line-height:1.7;color:var(--color-ink-tertiary)}.features-section{background:var(--color-bg-cool)}.features-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-5);max-width:1000px;margin:0 auto}.feature-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-8);transition:all .3s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.feature-card:hover{border-color:var(--color-border-light);box-shadow:var(--shadow-lg);transform:translateY(-3px)}.feature-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-ink) 0%,var(--color-ink-muted) 100%);opacity:0;transition:opacity .3s ease}.feature-card:hover:before{opacity:1}.feature-icon{width:40px;height:40px;border-radius:var(--radius);background:var(--color-accent-light);display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-4);font-size:18px}.feature-card h3{font-size:18px;font-weight:600;margin-bottom:var(--space-2)}.feature-card p{font-size:14px;line-height:1.65;color:var(--color-ink-tertiary)}.showcase-section{padding:var(--space-24) var(--space-6)}.showcase-item{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-12);align-items:center;max-width:1100px;margin:0 auto var(--space-20)}.showcase-item:last-child{margin-bottom:0}.showcase-item.reverse{direction:rtl}.showcase-item.reverse>*{direction:ltr}.showcase-text{display:flex;flex-direction:column;gap:var(--space-4)}.showcase-text .section-label{text-align:left;margin-bottom:0}.showcase-text h3{font-size:clamp(24px,3vw,32px);line-height:1.2;letter-spacing:-.02em;font-weight:700}.showcase-text p{font-size:16px;line-height:1.7;color:var(--color-ink-tertiary)}.showcase-image{border-radius:var(--radius-lg);border:1px solid var(--color-border);overflow:hidden;box-shadow:var(--shadow-lg);background:var(--color-bg-warm);aspect-ratio:16/10;display:flex;align-items:center;justify-content:center}.showcase-image img{width:100%;height:100%;object-fit:cover}.matrix-section{background:var(--color-bg-cool)}.matrix-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-5);max-width:1100px;margin:0 auto}.matrix-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);overflow:hidden}.matrix-card-header{padding:var(--space-5) var(--space-6);background:var(--color-bg-warm);border-bottom:1px solid var(--color-border)}.matrix-card-header h3{font-size:16px;font-weight:600;margin-bottom:var(--space-1)}.matrix-card-header p{font-size:13px;color:var(--color-ink-tertiary);line-height:1.5}.matrix-items{padding:var(--space-2)}.matrix-item{display:grid;grid-template-columns:1fr auto;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--radius-sm);transition:background .15s ease}.matrix-item:hover{background:var(--color-bg-warm)}.matrix-item-name{font-size:14px;font-weight:500}.matrix-item-status{font-size:11px;font-weight:600;padding:2px 10px;border-radius:var(--radius-full);white-space:nowrap}.matrix-item-status.ready{color:var(--color-green);background:var(--color-green-bg)}.matrix-item-status.connected{color:#3b82f6;background:#eff6ff}.matrix-item-status.improving{color:var(--color-amber);background:var(--color-amber-bg)}.matrix-item-desc{grid-column:1 / -1;font-size:13px;color:var(--color-ink-tertiary);line-height:1.5;margin-top:-2px}.pricing-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:var(--space-5);max-width:1000px;margin:0 auto}.pricing-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-8);display:flex;flex-direction:column;transition:all .3s ease}.pricing-card:hover{border-color:var(--color-border-light);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.pricing-card.featured{border-color:var(--color-ink);position:relative;box-shadow:var(--shadow-lg)}.pricing-card.featured:before{content:"推荐";position:absolute;top:-10px;right:var(--space-6);background:var(--color-accent);color:#fff;font-size:11px;font-weight:700;padding:4px 12px;border-radius:var(--radius-full)}.pricing-card.featured .pricing-features li:before{color:var(--color-accent)}.pricing-card-label{font-size:12px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--color-ink-muted);margin-bottom:var(--space-3)}.pricing-card h3{font-size:22px;font-weight:700;margin-bottom:var(--space-2)}.pricing-card-price{font-size:40px;font-weight:700;letter-spacing:-.03em;line-height:1;margin-bottom:var(--space-6)}.pricing-card-price span{font-size:15px;font-weight:400;color:var(--color-ink-tertiary)}.pricing-features{list-style:none;padding:0;margin:0 0 var(--space-6);display:flex;flex-direction:column;gap:var(--space-3);flex:1}.pricing-features li{font-size:14px;color:var(--color-ink-tertiary);display:flex;align-items:flex-start;gap:var(--space-3)}.pricing-features li:before{content:"✓";color:var(--color-green);font-weight:700;flex-shrink:0}.pricing-card .btn{width:100%}.download-section{background:var(--color-bg-cool)}.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--space-5);max-width:800px;margin:0 auto}.download-card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:var(--space-8);text-align:center;text-decoration:none;color:inherit;transition:all .3s ease}.download-card:hover{border-color:var(--color-border-light);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.download-card-icon{width:48px;height:48px;border-radius:var(--radius);background:var(--color-accent-light);display:flex;align-items:center;justify-content:center;margin:0 auto var(--space-4);font-size:20px}.download-card h3{font-size:16px;font-weight:600;margin-bottom:var(--space-1)}.download-card p{font-size:13px;color:var(--color-ink-tertiary)}.cta-section{padding:var(--space-24) var(--space-6);text-align:center}.cta-box{max-width:700px;margin:0 auto;padding:var(--space-12) var(--space-8);background:var(--color-accent);border-radius:var(--radius-xl);color:#fff;position:relative;overflow:hidden}.cta-box:before{content:"";position:absolute;top:-50%;right:-20%;width:60%;height:200%;background:radial-gradient(circle,rgba(255,255,255,.05) 0%,transparent 70%);pointer-events:none}.cta-box h2{font-size:clamp(24px,3vw,32px);font-weight:700;margin-bottom:var(--space-4);position:relative}.cta-box p{color:#ffffffb3;font-size:16px;line-height:1.7;margin-bottom:var(--space-8);position:relative}.cta-box .btn{position:relative;background:#fff;color:var(--color-accent);font-weight:700}.cta-box .btn:hover{background:var(--color-accent-light);transform:translateY(-1px);box-shadow:0 4px 12px #00000026}.site-footer{padding:var(--space-12) var(--space-6);border-top:1px solid var(--color-border);text-align:center}.site-footer p{font-size:13px;color:var(--color-ink-muted)}.modal-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);display:grid;place-items:center;z-index:200;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal{width:min(420px,calc(100vw - 32px));background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-xl);padding:var(--space-8);display:flex;flex-direction:column;gap:var(--space-4);box-shadow:var(--shadow-xl);animation:slideUp .3s cubic-bezier(.4,0,.2,1)}@keyframes slideUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.modal-tabs{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-2);margin-bottom:var(--space-2)}.modal-tabs button{padding:var(--space-3);border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-bg);color:var(--color-ink-tertiary);font-weight:500;cursor:pointer;transition:all .2s ease}.modal-tabs button.active{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.modal label{display:flex;flex-direction:column;gap:var(--space-1);font-size:13px;color:var(--color-ink-tertiary);font-weight:500}.modal input{padding:12px 14px;border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-bg);font-size:14px;font-family:inherit;transition:border-color .2s ease}.modal input:focus{outline:none;border-color:var(--color-ink-tertiary)}.modal .policy{display:flex;align-items:center;gap:var(--space-2);font-size:13px;color:var(--color-ink-tertiary);cursor:pointer}.modal .policy input{width:18px;height:18px;accent-color:var(--color-accent)}.modal .submit{background:var(--color-accent);border-color:var(--color-accent);color:#fff;padding:14px;border-radius:var(--radius);font-weight:600;font-size:15px;cursor:pointer;border:none;transition:background .2s ease}.modal .submit:hover:not(:disabled){background:var(--color-accent-hover)}.modal .submit:disabled{opacity:.6;cursor:not-allowed}.welcome{font-size:13px;color:var(--color-ink-tertiary);max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.pricing-api-note{text-align:center;font-size:13px;color:var(--color-amber);background:var(--color-amber-bg);border:1px solid color-mix(in srgb,var(--color-amber) 30%,transparent);border-radius:var(--radius);padding:var(--space-2) var(--space-4);margin:0 auto var(--space-6);max-width:640px}.invite-row{display:flex;align-items:center;justify-content:center;gap:var(--space-3);margin-bottom:var(--space-8);flex-wrap:wrap}.invite-row label{font-size:14px;color:var(--color-ink-secondary);font-weight:500}.invite-row input{padding:10px 14px;border-radius:var(--radius);border:1px solid var(--color-border);background:var(--color-bg);font-size:14px;font-family:inherit;min-width:260px;transition:border-color .2s ease,box-shadow .2s ease}.invite-row input:focus{outline:none;border-color:var(--color-ink-tertiary);box-shadow:0 0 0 3px color-mix(in srgb,var(--color-ink) 6%,transparent)}.demo-carousel{display:flex;align-items:center;gap:var(--space-4)}.nav-btn{flex-shrink:0;width:44px;height:44px;border-radius:var(--radius-full);border:1px solid var(--color-border);background:var(--color-bg);color:var(--color-ink-secondary);font-size:20px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;box-shadow:var(--shadow-sm)}.nav-btn:hover{border-color:var(--color-ink-tertiary);color:var(--color-ink);background:var(--color-bg-warm);box-shadow:var(--shadow-md)}.shot-large{position:relative;flex:1;min-width:0;border-radius:var(--radius-xl);overflow:hidden;border:1px solid var(--color-border);background:var(--color-bg-cool);box-shadow:var(--shadow-lg);aspect-ratio:16 / 10}.shot-large img{width:100%;height:100%;object-fit:cover;display:block;cursor:zoom-in}.shot-caption{position:absolute;left:0;right:0;bottom:0;padding:var(--space-6) var(--space-6) var(--space-5);background:linear-gradient(180deg,transparent 0%,rgb(0 0 0 / .55) 100%);color:#fff;pointer-events:none}.shot-caption h3{margin:0 0 var(--space-1);font-size:18px;font-weight:600}.shot-caption p{margin:0;font-size:13px;opacity:.85}.shot-thumbs{display:flex;gap:var(--space-3);margin-top:var(--space-4);overflow-x:auto;padding-bottom:var(--space-1)}.thumb{flex-shrink:0;width:140px;border:2px solid transparent;border-radius:var(--radius);background:var(--color-bg);padding:0;cursor:pointer;overflow:hidden;text-align:left;transition:border-color .2s ease,box-shadow .2s ease}.thumb img{width:100%;aspect-ratio:16 / 10;object-fit:cover;display:block}.thumb span{display:block;padding:var(--space-2) var(--space-2);font-size:12px;color:var(--color-ink-tertiary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.thumb:hover{box-shadow:var(--shadow-md)}.thumb.active{border-color:var(--color-accent);box-shadow:var(--shadow-md)}.thumb.active span{color:var(--color-ink);font-weight:500}.empty-card{border:1px dashed var(--color-border);border-radius:var(--radius-lg);padding:var(--space-10) var(--space-6);text-align:center;color:var(--color-ink-tertiary);font-size:14px;background:var(--color-bg-cool)}.pack-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-5)}.pack-card{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-bg);padding:var(--space-5);display:flex;flex-direction:column;gap:var(--space-3);transition:box-shadow .2s ease,transform .2s ease}.pack-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.pack-card img{width:100%;aspect-ratio:16 / 9;object-fit:cover;border-radius:var(--radius);background:var(--color-bg-cool)}.pack-card h3{margin:0;font-size:16px;font-weight:600;color:var(--color-ink)}.muted{margin:0;font-size:13px;color:var(--color-ink-tertiary);line-height:1.6;flex:1}.pack-bottom{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);margin-top:auto;padding-top:var(--space-3);border-top:1px solid var(--color-border-light)}.pack-price{font-size:18px;font-weight:700;color:var(--color-ink)}.pack-bottom button{padding:8px 18px;border-radius:var(--radius);border:none;background:var(--color-accent);color:#fff;font-size:13px;font-weight:600;cursor:pointer;transition:background .2s ease}.pack-bottom button:hover{background:var(--color-accent-hover)}.preview-mask{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b8;display:flex;align-items:center;justify-content:center;z-index:120;padding:var(--space-6);animation:fadeIn .2s ease}.preview{max-width:1100px;width:100%;background:var(--color-bg);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-xl);animation:slideUp .25s ease}.preview img{width:100%;display:block;max-height:76vh;object-fit:contain;background:var(--color-bg-cool)}.preview-bar{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-top:1px solid var(--color-border-light)}.preview-bar span{font-size:13px;color:var(--color-ink-tertiary);font-variant-numeric:tabular-nums}.preview-bar button{padding:7px 14px;border-radius:var(--radius-sm);font-size:13px;cursor:pointer;font-family:inherit;transition:all .2s ease}.preview-bar .ghost{border:1px solid var(--color-border);background:var(--color-bg);color:var(--color-ink-secondary)}.preview-bar .ghost:hover{border-color:var(--color-ink-tertiary);color:var(--color-ink)}.preview-bar button:last-child{margin-left:auto;border:none;background:var(--color-accent);color:#fff;font-weight:500}.preview-bar button:last-child:hover{background:var(--color-accent-hover)}@media (max-width: 768px){.nav-links{display:none}.hero{padding-top:calc(64px + var(--space-12));padding-bottom:var(--space-12)}.hero h1{font-size:32px}.hero-description{font-size:15px}.section,.showcase-section{padding:var(--space-12) var(--space-4)}.features-grid,.matrix-grid{grid-template-columns:1fr}.showcase-item{grid-template-columns:1fr;gap:var(--space-6);margin-bottom:var(--space-12)}.showcase-item.reverse{direction:ltr}.pricing-grid{grid-template-columns:1fr}.hero-cta{flex-direction:column;align-items:stretch}.hero-cta .btn{width:100%}.demo-carousel{gap:var(--space-2)}.nav-btn{width:36px;height:36px;font-size:16px}.shot-caption h3{font-size:15px}.shot-caption p{font-size:12px}.pack-grid{grid-template-columns:1fr}.invite-row{flex-direction:column;align-items:stretch}.invite-row input{min-width:0;width:100%}.preview-bar{flex-wrap:wrap}.cta-box{padding:var(--space-8) var(--space-5)}.welcome{max-width:100px}}@media (max-width: 480px){.top-nav{padding:0 var(--space-4)}.nav-brand{font-size:16px}.nav-brand:before{width:24px;height:24px}.hero h1{font-size:28px}.feature-card,.pricing-card{padding:var(--space-5)}.pricing-card-price{font-size:32px}}