:root{--text: #6b6375;--text-h: #08060d;--bg: #fff;--main-surface: #f6f5f9;--card-surface: rgba(255, 255, 255, .92);--border: #e5e4e7;--code-bg: #f4f3ec;--accent: #aa3bff;--accent-bg: rgba(170, 59, 255, .1);--accent-border: rgba(170, 59, 255, .5);--social-bg: rgba(244, 243, 236, .5);--shadow: rgba(0, 0, 0, .1) 0 10px 15px -3px, rgba(0, 0, 0, .05) 0 4px 6px -2px;--sans: system-ui, "Segoe UI", Roboto, sans-serif;--heading: system-ui, "Segoe UI", Roboto, sans-serif;--mono: ui-monospace, Consolas, monospace;font:18px/145% var(--sans);letter-spacing:.18px;color-scheme:light dark;color:var(--text);background:var(--bg);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media(max-width:1024px){:root{font-size:16px}}@media(prefers-color-scheme:dark){:root{--text: #9ca3af;--text-h: #f3f4f6;--bg: #16171d;--main-surface: #16171d;--card-surface: rgba(30, 31, 40, .92);--border: #2e303a;--code-bg: #1f2028;--accent: 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span,.brand-text,.sidebar-section-title{display:none}.main-body{padding:16px 16px 40px}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-grid--tool,.collections-grid,.contact-grid{grid-template-columns:1fr}}@media(max-width:768px){#app{border-inline:none;width:100%}html.mobile-nav-open{overflow:hidden}.app-shell{position:relative}.app-shell--nav-open .sidebar-backdrop{display:block;position:fixed;inset:0;z-index:1001;margin:0;padding:0;border:0;background:#0f172a6b;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);cursor:pointer}.sidebar{position:fixed;left:0;top:0;width:min(280px,86vw);height:100dvh;max-height:100dvh;z-index:1002;transform:translate(-100%);transition:transform .28s ease;overflow-y:auto;overscroll-behavior:contain;padding-top:calc(12px + env(safe-area-inset-top,0));padding-bottom:env(safe-area-inset-bottom,0);border-right:1px solid var(--border)}.app-shell--nav-open .sidebar{transform:translate(0);box-shadow:8px 0 40px #00000029}.sidebar-link span,.brand-text,.sidebar-section-title{display:revert}.mobile-nav-toggle{display:grid}.topbar{justify-content:flex-start;padding-left:4px;padding-right:10px;row-gap:6px}.topbar-right{margin-left:auto;gap:10px}.topbar .topbar-label{display:none}.font-scale-options{gap:4px}.font-btn{padding:4px 7px;font-size:13px}.select--lang{max-width:112px;min-width:0;font-size:14px;padding:8px 10px}.main-body{padding:12px 12px calc(24px + env(safe-area-inset-bottom,0))}.tool-grid{grid-template-columns:1fr;gap:12px}.tool-grid--tool{grid-template-columns:1fr}.home-title{font-size:28px;letter-spacing:-.5px}.home-hero{padding:16px 12px 10px}.category-banner{padding:16px;margin-bottom:12px}.category-banner-h1{font-size:22px}.category-banner-sub{font-size:13px}.category-block{padding:14px 12px 12px}.category-block-actions{flex-direction:column;align-items:stretch;margin-top:12px}.category-block-actions .ghost.small,.category-block-actions .primary.small{width:100%;box-sizing:border-box;text-align:center}.tool-detail-title,.page-title{font-size:24px}}.screen-overlay{position:fixed;inset:0;z-index:9999;display:flex;flex-direction:column}.screen-topbar{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;background:#ffffff59;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.4);color:var(--text-h)}.screen-title{font-weight:800}.screen-sub{font-size:12px;opacity:.8}.qr-preview{border:1px solid var(--border);border-radius:16px;padding:14px;background:#f4f3ec40;display:grid;place-items:center;min-height:240px}.qr-canvas{image-rendering:pixelated}.image-preview{display:flex;flex-direction:column;gap:14px}.img-wrap{border:1px solid var(--border);border-radius:16px;padding:12px;background:#f4f3ec2e}.img-title{font-weight:800;margin-bottom:10px}.img-wrap img{width:100%;max-height:320px;object-fit:contain;border-radius:10px;background:#fff9}.update-prompt{position:sticky;top:0;z-index:1000;margin:0 0 14px;padding:12px 14px;border-radius:14px;border:1px solid var(--border);background:#ffffffa6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);display:flex;align-items:center;justify-content:space-between;gap:12px}.update-text{font-weight:700}.update-actions{display:flex;gap:10px}