.feisi-root{--bg:#faf8f3;--bg-2:#ffffff;--bg-3:#f3efe6;--line:rgba(20,15,5,0.08);--line-2:rgba(20,15,5,0.16);--ink:#18140a;--ink-2:rgba(24,20,10,0.72);--ink-3:rgba(24,20,10,0.5);--ink-4:rgba(24,20,10,0.32);--accent:#f5b942;--accent-2:#ffd479;--accent-ink:#1a1407;--pop-pink:#ff9bb3;--pop-cyan:#7dd3d8;--pop-violet:#b89cff;--grid:rgba(20,15,5,0.04);--font-sans:"Inter","Noto Sans SC",system-ui,-apple-system,sans-serif;--font-hand:var(--font-caveat),"Source Han Serif SC",cursive;--font-mono:"JetBrains Mono",ui-monospace,monospace;--background:var(--bg);--foreground:var(--ink);--card:var(--bg-2);--card-foreground:var(--ink);--popover:var(--bg-2);--popover-foreground:var(--ink);--primary:var(--accent);--primary-foreground:var(--accent-ink);--secondary:var(--bg-3);--secondary-foreground:var(--ink);--muted:var(--bg-3);--muted-foreground:var(--ink-3);--accent-foreground:var(--accent-ink);--border:var(--line-2);--input:var(--line-2);--ring:rgba(245,185,66,0.5);--radius:12px;--destructive:#dc2626;--destructive-foreground:#ffffff;--skeleton-from:var(--bg-3);--skeleton-via:var(--bg-2);--success:oklch(0.62 0.16 150);--success-foreground:oklch(0.99 0.01 95);--warning:oklch(0.74 0.14 65);--warning-foreground:oklch(0.18 0.05 60)}.feisi-root[data-theme=dark]{--bg:#0a0a0c;--bg-2:#111114;--bg-3:#16161a;--line:rgba(255,255,255,0.08);--line-2:rgba(255,255,255,0.14);--ink:#f5f4ee;--ink-2:rgba(245,244,238,0.72);--ink-3:rgba(245,244,238,0.5);--ink-4:rgba(245,244,238,0.32);--grid:rgba(255,255,255,0.035)}.feisi-root[data-theme=light]{--bg:#faf8f3;--bg-2:#ffffff;--bg-3:#f3efe6;--line:rgba(20,15,5,0.08);--line-2:rgba(20,15,5,0.16);--ink:#18140a;--ink-2:rgba(24,20,10,0.72);--ink-3:rgba(24,20,10,0.5);--ink-4:rgba(24,20,10,0.32);--grid:rgba(20,15,5,0.04)}.feisi-root *,.feisi-root :after,.feisi-root :before{box-sizing:border-box}.feisi-root.feisi-portal{background:var(--bg-2);min-height:0}.feisi-root.feisi-portal h1,.feisi-root.feisi-portal h2,.feisi-root.feisi-portal h3,.feisi-root.feisi-portal h4{font-size:inherit!important;font-weight:inherit!important;letter-spacing:normal!important;line-height:inherit!important;margin:0!important}.feisi-root{background:radial-gradient(1200px 600px at 70% -10%,rgba(245,185,66,.08),transparent 60%),radial-gradient(800px 400px at 10% 30%,rgba(184,156,255,.05),transparent 60%),var(--bg);color:var(--ink);font-family:var(--font-sans);font-feature-settings:"ss01","cv11";-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh}.feisi-root a{color:inherit;text-decoration:none}.feisi-root button{font-family:inherit;cursor:pointer}.feisi-root ::selection{background:var(--accent);color:var(--accent-ink)}.feisi-root .container{max-width:1240px;margin:0 auto;padding:0 32px}.feisi-root .section{padding:120px 0;position:relative}.feisi-root .section-tight{padding:80px 0}.feisi-root .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);font-family:var(--font-mono)}.feisi-root .eyebrow:before{content:"";width:24px;height:1px;background:var(--ink-4)}.feisi-root h1,.feisi-root h2,.feisi-root h3,.feisi-root h4{margin:0;font-weight:600;letter-spacing:-.02em}.feisi-root h1{font-size:clamp(40px,5vw,72px);line-height:1.05;letter-spacing:-.035em}.feisi-root h2{font-size:clamp(28px,3.4vw,44px);line-height:1.1;letter-spacing:-.03em}.feisi-root h3{font-size:clamp(18px,1.6vw,22px);line-height:1.3}.feisi-root p{margin:0;line-height:1.6;color:var(--ink-2)}.feisi-root .handwrite{font-family:var(--font-hand);font-weight:700;letter-spacing:0}.feisi-root .muted{color:var(--ink-3)}.feisi-root .accent{color:var(--accent)}.feisi-root .btn{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:10px;font-size:14px;font-weight:500;border:1px solid transparent;transition:transform .15s ease,background .2s ease,border-color .2s ease;white-space:nowrap}.feisi-root .btn:hover{transform:translateY(-1px)}.feisi-root .btn:active{transform:translateY(0)}.feisi-root .btn-primary{background:var(--accent);color:var(--accent-ink);box-shadow:inset 0 1px 0 rgba(255,255,255,.4),0 8px 24px -8px rgba(245,185,66,.5)}.feisi-root .btn-primary:hover{background:var(--accent-2)}.feisi-root .btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-2)}.feisi-root .btn-ghost:hover{background:var(--bg-2);border-color:var(--ink-4)}.feisi-root .btn-sm{padding:8px 14px;font-size:13px;border-radius:8px}.feisi-root .nav{position:sticky;top:0;z-index:100;backdrop-filter:blur(16px) saturate(140%);-webkit-backdrop-filter:blur(16px) saturate(140%);background:color-mix(in srgb,var(--bg) 78%,transparent);border-bottom:1px solid var(--line)}.feisi-root .nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}.feisi-root .nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:16px;letter-spacing:-.01em}.feisi-root .nav-logo .mark{width:28px;height:28px;display:grid;place-items:center}.feisi-root .nav-links{display:flex;align-items:center;gap:4px}.feisi-root .nav-link{padding:8px 14px;font-size:14px;color:var(--ink-2);border-radius:8px;transition:color .15s,background .15s}.feisi-root .nav-link:hover{color:var(--ink);background:var(--bg-2)}.feisi-root .nav-cta{display:flex;align-items:center;gap:8px}.feisi-root .lang-switch{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;font-family:var(--font-mono);font-size:11px}.feisi-root .lang-switch button{background:transparent;border:0;color:var(--ink-3);padding:6px 10px;letter-spacing:.05em}.feisi-root .lang-switch button.on{background:var(--bg-2);color:var(--ink)}.feisi-root .hero{padding:80px 0 60px;position:relative;overflow-x:clip}.feisi-root .hero-inner{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:56px;align-items:center}@media (max-width:960px){.feisi-root .hero-inner{grid-template-columns:1fr;gap:48px}}.feisi-root .hero-badge{display:inline-flex;align-items:center;gap:10px;padding:6px 6px 6px 14px;border:1px solid var(--line-2);border-radius:999px;font-size:12px;font-weight:500;color:var(--ink-2);background:var(--bg-2)}.feisi-root .hero-badge .pill{background:var(--accent);color:var(--accent-ink);font-family:var(--font-mono);font-size:10px;letter-spacing:.05em;padding:3px 8px;border-radius:999px;font-weight:600;text-transform:uppercase}.feisi-root .hero h1{margin:24px 0 20px}.feisi-root .hero h1 .hl{position:relative;white-space:nowrap}.feisi-root .hero h1 .hl:after{content:"";position:absolute;left:-2%;right:-2%;bottom:6px;height:14px;background:var(--accent);opacity:.85;z-index:-1;border-radius:4px;transform:skewX(-2deg) skewY(-1deg)}.feisi-root .hero p.lead{font-size:19px;color:var(--ink-2);max-width:520px;margin-bottom:36px}.feisi-root .hero-actions{display:flex;gap:12px;flex-wrap:wrap}.feisi-root .hero-meta{margin-top:32px;display:flex;gap:28px;flex-wrap:wrap;color:var(--ink-3);font-size:13px}.feisi-root .hero-meta b{color:var(--ink);font-weight:600}.feisi-root .canvas-frame{position:relative;border:1px solid var(--line-2);border-radius:18px;background:linear-gradient(180deg,rgba(255,255,255,.02),transparent 30%),var(--bg-2);overflow:hidden;box-shadow:0 40px 80px -30px rgba(0,0,0,.18),inset 0 1px 0 rgba(255,255,255,.04);aspect-ratio:5/4}.feisi-root .canvas-toolbar{display:flex;align-items:center;gap:6px;padding:10px 14px;border-bottom:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.02),transparent);font-family:var(--font-mono);font-size:11px;color:var(--ink-3)}.feisi-root .canvas-toolbar .dots{display:flex;gap:6px}.feisi-root .canvas-toolbar .dot{width:11px;height:11px;border-radius:50%;background:var(--line-2)}.feisi-root .canvas-toolbar .filename{margin-left:12px}.feisi-root .canvas-toolbar .right{margin-left:auto;display:flex;gap:16px}.feisi-root .canvas-toolbar .right span{display:inline-flex;align-items:center;gap:6px}.feisi-root .live-dot{width:6px;height:6px;border-radius:50%;background:#4ade80;box-shadow:0 0 0 4px rgba(74,222,128,.18);animation:feisi-pulse 1.6s ease-in-out infinite}@keyframes feisi-pulse{50%{opacity:.5}}.feisi-root .canvas-tools{position:absolute;left:14px;top:60px;display:flex;flex-direction:column;gap:4px;padding:6px;background:var(--bg-3);border:1px solid var(--line);border-radius:12px;z-index:3}.feisi-root .canvas-tool{width:30px;height:30px;display:grid;place-items:center;border-radius:8px;color:var(--ink-3);border:1px solid transparent;transition:background .15s,color .15s}.feisi-root .canvas-tool.active{background:var(--accent);color:var(--accent-ink)}.feisi-root .canvas-tool:hover{color:var(--ink)}.feisi-root .canvas-stage{position:absolute;inset:44px 0 0 0;overflow:hidden;background-image:radial-gradient(circle at 1px 1px,var(--grid) 1px,transparent 0);background-size:24px 24px}.feisi-root .canvas-cursors{position:absolute;inset:0;pointer-events:none}.feisi-root .cursor{position:absolute;display:flex;align-items:flex-start;gap:4px;transition:transform 1.6s cubic-bezier(.6,.2,.2,1);will-change:transform}.feisi-root .cursor svg{filter:drop-shadow(0 2px 6px rgba(0,0,0,.4))}.feisi-root .cursor-tag{margin-top:14px;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:600;font-family:var(--font-sans);white-space:nowrap;color:white}.feisi-root .section-head{max-width:720px;margin-bottom:64px}.feisi-root .section-head h2{margin:16px 0}.feisi-root .section-head p{font-size:18px;color:var(--ink-2)}.feisi-root .feat-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:18px;overflow:hidden}@media (max-width:900px){.feisi-root .feat-grid{grid-template-columns:1fr 1fr}}@media (max-width:600px){.feisi-root .feat-grid{grid-template-columns:1fr}}.feisi-root .feat-cell{background:var(--bg);padding:32px 28px;display:flex;flex-direction:column;gap:14px;min-height:220px;position:relative;transition:background .25s ease}.feisi-root .feat-cell:hover{background:var(--bg-2)}.feisi-root .feat-cell .icon{width:36px;height:36px;display:grid;place-items:center;border-radius:9px;background:color-mix(in srgb,var(--accent) 12%,transparent);color:var(--accent);margin-bottom:8px}.feisi-root .feat-cell h3{font-size:18px}.feisi-root .feat-cell p{font-size:14px;color:var(--ink-2)}.feisi-root .split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:64px;align-items:center}.feisi-root .split.reverse{grid-template-columns:minmax(0,1.15fr) minmax(0,1fr)}.feisi-root .split.reverse .split-text{order:2}@media (max-width:900px){.feisi-root .split,.feisi-root .split.reverse{grid-template-columns:1fr;gap:40px}.feisi-root .split.reverse .split-text{order:0}}.feisi-root .split-text h2{margin:16px 0 20px;max-width:640px}.feisi-root .split-text p{font-size:17px;max-width:480px;margin-bottom:24px}.feisi-root .split-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}.feisi-root .split-list li{display:flex;gap:12px;font-size:15px;color:var(--ink-2)}.feisi-root .split-list li:before{content:"";flex:0 0 6px;height:6px;margin-top:9px;border-radius:50%;background:var(--accent)}.feisi-root .scene-card{position:relative;border:1px solid var(--line-2);border-radius:16px;background:var(--bg-2);overflow:hidden;aspect-ratio:16/11}.feisi-root .scene-stage{position:absolute;inset:0;background-image:radial-gradient(circle at 1px 1px,var(--grid) 1px,transparent 0);background-size:22px 22px}.feisi-root .scene-frames{position:absolute;inset:0;padding:28px}.feisi-root .scene-frame{position:absolute;border:1.5px dashed rgba(245,185,66,.5);border-radius:8px;font-family:var(--font-mono);font-size:10px;color:var(--accent);padding:4px 8px;background:rgba(245,185,66,.04);transition:border-color .3s,background .3s,box-shadow .3s}.feisi-root .scene-frame.active{border-style:solid;border-color:var(--accent);background:rgba(245,185,66,.1);box-shadow:0 0 0 4px rgba(245,185,66,.12)}.feisi-root .scene-frame .num{position:absolute;top:-8px;left:-8px;background:var(--bg);color:var(--accent);border:1px solid var(--accent);width:20px;height:20px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:600}.feisi-root .scene-controls{position:absolute;bottom:14px;left:50%;transform:translateX(-50%);display:flex;align-items:center;gap:4px;padding:6px;background:var(--bg-3);border:1px solid var(--line);border-radius:12px;z-index:4}.feisi-root .scene-controls button{width:28px;height:28px;border:0;background:transparent;color:var(--ink-2);border-radius:6px;display:grid;place-items:center}.feisi-root .scene-controls button:hover{background:var(--bg);color:var(--ink)}.feisi-root .scene-controls .counter{font-family:var(--font-mono);font-size:11px;color:var(--ink-3);padding:0 8px}.feisi-root .sync-card{position:relative;border:1px solid var(--line-2);border-radius:16px;background:var(--bg-2);overflow:hidden;padding:32px;aspect-ratio:16/11;display:flex;align-items:center;justify-content:center}.feisi-root .devices{position:relative;width:100%;height:100%;display:grid;grid-template-columns:1fr 1fr 1fr;align-items:center;justify-items:center}.feisi-root .device{border:1px solid var(--line-2);border-radius:10px;background:var(--bg-3);position:relative;z-index:2}.feisi-root .device .scr{background-image:radial-gradient(circle at 1px 1px,var(--grid) 1px,transparent 0);background-size:12px 12px;border-radius:4px;margin:8px;position:relative;overflow:hidden}.feisi-root .device.laptop{width:200px}.feisi-root .device.laptop .scr{height:110px}.feisi-root .device.tablet{width:110px}.feisi-root .device.tablet .scr{height:140px}.feisi-root .device.phone{width:70px}.feisi-root .device.phone .scr{height:120px}.feisi-root .device-label{bottom:-22px;font-family:var(--font-mono);font-size:10px;color:var(--ink-4);white-space:nowrap}.feisi-root .cloud-blob,.feisi-root .device-label{position:absolute;left:50%;transform:translateX(-50%)}.feisi-root .cloud-blob{top:8%;width:86px;height:50px;z-index:1}.feisi-root .cloud-blob svg{width:100%;height:100%;color:var(--accent)}.feisi-root .sync-line{position:absolute;top:35%;height:1px;background:repeating-linear-gradient(90deg,var(--accent) 0 4px,transparent 4px 8px);opacity:.6;z-index:1;animation:feisi-dash 3s linear infinite}@keyframes feisi-dash{to{background-position-x:240px}}.feisi-root .uc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}@media (max-width:760px){.feisi-root .uc-grid{grid-template-columns:1fr}}.feisi-root .uc-card{border:1px solid var(--line);background:var(--bg-2);border-radius:16px;padding:28px;display:flex;flex-direction:column;gap:16px;position:relative;overflow:hidden;transition:border-color .2s,transform .25s ease}.feisi-root .uc-card:hover{border-color:var(--line-2);transform:translateY(-2px)}.feisi-root .uc-card .tag{font-family:var(--font-mono);font-size:11px;color:var(--accent);letter-spacing:.08em;text-transform:uppercase}.feisi-root .uc-card h3{font-size:20px;margin-top:4px}.feisi-root .uc-card p{font-size:14px;color:var(--ink-2)}.feisi-root .uc-art{height:160px;border-radius:10px;background:radial-gradient(circle at 1px 1px,var(--grid) 1px,transparent 0) 0 0/16px 16px,var(--bg-3);position:relative;overflow:hidden;margin-bottom:4px}.feisi-root .price-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}@media (max-width:900px){.feisi-root .price-grid{grid-template-columns:1fr}}.feisi-root .cta-strip{position:relative;padding:80px 56px;border-radius:24px;background:var(--bg-2);border:1px solid var(--line-2);overflow:hidden;text-align:center}.feisi-root .cta-strip h2{max-width:680px;margin:0 auto 18px}.feisi-root .cta-strip p{max-width:560px;margin:0 auto 32px;font-size:17px}.feisi-root .cta-deco{position:absolute;pointer-events:none}.feisi-root .footer{border-top:1px solid var(--line);padding:64px 0 40px;margin-top:80px}.feisi-root .footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:40px}@media (max-width:900px){.feisi-root .footer-grid{grid-template-columns:1fr 1fr}}.feisi-root .footer-col h4{font-size:12px;font-weight:600;color:var(--ink-3);margin-bottom:16px;text-transform:uppercase;letter-spacing:.08em}.feisi-root .footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px;font-size:14px}.feisi-root .footer-col ul a{color:var(--ink-2)}.feisi-root .footer-col ul a:hover{color:var(--ink)}.feisi-root .footer-bottom{margin-top:56px;padding-top:24px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;color:var(--ink-3);font-size:12px;font-family:var(--font-mono)}.feisi-root .footer-bottom a{color:var(--ink-3)}.feisi-root .footer-bottom a:hover{color:var(--ink)}.feisi-root .logos{display:flex;align-items:center;justify-content:center;gap:56px;flex-wrap:wrap;padding:32px 0;opacity:.55;filter:grayscale(1)}.feisi-root .logos .lab{font-size:14px;color:var(--ink-3);font-family:var(--font-mono);letter-spacing:.05em}.feisi-root .logos .logo-item{font-size:18px;font-weight:600;color:var(--ink-2);letter-spacing:-.01em}.feisi-root .deco-arrow,.feisi-root .deco-circle,.feisi-root .deco-squiggle{position:absolute;pointer-events:none;opacity:.5}