:root{color-scheme:dark;--bg-page: #1C1F1E;--bg-surface: #272C29;--bg-surface-subtle: #202522;--accent: #7AC9B3;--accent-hover: #8ee0ca;--accent-ink: #14231E;--logo-plate: #BBDCD0;--text-main: #F4F6F3;--text-muted: #B5BEB8;--text-dim: #7E8C84;--border-line: rgba(255, 255, 255, .08);--border-focus: #7AC9B3;--container-max: 1120px;--radius-panel: 20px;--radius-btn: 9999px;--radius-badge: 9999px;--font-system: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC", "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", "ui-monospace", "Menlo", monospace}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth;background-color:var(--bg-page)}body{margin:0;padding:0;background-color:var(--bg-page);color:var(--text-main);font-family:var(--font-system);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--border-focus);outline-offset:3px;border-radius:4px}.shell{width:min(var(--container-max),calc(100% - 48px));margin-left:auto;margin-right:auto}.site-header{position:sticky;top:0;z-index:100;background-color:#1c1f1ed9;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border-line)}.site-nav{display:flex;align-items:center;justify-content:space-between;height:68px}.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-main);font-weight:700;font-size:19px;letter-spacing:-.01em}.brand-icon{width:36px;height:36px;border-radius:9px;box-shadow:0 2px 6px #0000004d;display:block}.nav-links{display:flex;align-items:center;gap:24px}.nav-link{color:var(--text-muted);text-decoration:none;font-size:14px;font-weight:500;transition:color .15s ease}.nav-link:hover{color:var(--text-main)}.nav-link.back-link{color:var(--accent)}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 20px;border-radius:var(--radius-btn);font-size:15px;font-weight:600;text-decoration:none;cursor:pointer;transition:background-color .15s ease,transform .1s ease,border-color .15s ease;border:1px solid transparent}.btn:active{transform:translateY(1px)}.btn-primary{background-color:var(--accent);color:var(--accent-ink);box-shadow:0 4px 12px #7ac9b333}.btn-primary:hover{background-color:var(--accent-hover)}.btn-secondary{background-color:#ffffff0a;color:var(--text-main);border-color:#ffffff24}.btn-secondary:hover{background-color:#ffffff14;border-color:#ffffff3d}.nav-btn{min-height:36px;padding:0 14px;font-size:13px}.hero-section{padding:64px 0 80px}.hero-grid{display:grid;grid-template-columns:1fr 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var(--border-line);box-shadow:0 24px 60px #00000073;overflow:hidden}.preview-window-top{height:38px;background-color:#00000040;display:flex;align-items:center;padding:0 16px;gap:8px;border-bottom:1px solid var(--border-line)}.mac-dot{width:11px;height:11px;border-radius:50%}.mac-dot.close{background-color:#ff5f56}.mac-dot.min{background-color:#ffbd2e}.mac-dot.max{background-color:#27c93f}.preview-image{display:block;width:100%;height:auto;object-fit:cover}.section{padding:72px 0;border-top:1px solid var(--border-line)}.section-heading{text-align:center;max-width:680px;margin:0 auto 52px}.section-heading h2{font-size:clamp(28px,3.2vw,36px);font-weight:700;letter-spacing:-.015em;margin:10px 0 14px}.section-heading p{font-size:16px;color:var(--text-muted);line-height:1.6;margin:0}.demo-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;background-color:var(--bg-surface);border-radius:var(--radius-panel);border:1px solid var(--border-line);padding:40px}.demo-steps{display:flex;flex-direction:column;gap:28px}.demo-step-item{display:flex;align-items:flex-start;gap:16px}.step-num{flex-shrink:0;width:32px;height:32px;border-radius:50%;background-color:#7ac9b326;color:var(--accent);font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center}.step-body h3{font-size:17px;margin:0 0 6px;color:var(--text-main)}.step-body p{font-size:14px;color:var(--text-muted);margin:0}.demo-media{border-radius:14px;overflow:hidden;border:1px solid var(--border-line);box-shadow:0 16px 36px #00000059}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.feature-card{background-color:var(--bg-surface);border-radius:var(--radius-panel);border:1px solid var(--border-line);padding:32px 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