:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,Source Han Sans SC,sans-serif;background:var(--app-gradient);background-color:var(--app-background);-webkit-font-smoothing:antialiased;transition:background var(--motion-duration-long) var(--motion-ease),background-color var(--motion-duration-long) var(--motion-ease),color var(--motion-duration-long) var(--motion-ease);--motion-ease: cubic-bezier(.4, 0, .2, 1)}html,body{margin:0;min-height:100%}html[data-theme=light]{--app-background: #f4f6fb;--app-gradient: radial-gradient(circle at top, rgba(37, 99, 235, .08), transparent 55%), linear-gradient(180deg, #f8fafc 0%, #eef2ff 100%);--surface-panel: rgba(255, 255, 255, .96);--surface-panel-hover: rgba(255, 255, 255, 1);--surface-muted: rgba(241, 245, 249, .9);--surface-border: rgba(148, 163, 184, .35);--surface-border-strong: rgba(100, 116, 139, .45);--surface-input: rgba(255, 255, 255, .96);--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #64748b;--card-gradient: linear-gradient(160deg, rgba(255, 255, 255, .96), rgba(226, 232, 240, .9));--card-border: rgba(148, 163, 184, .35);--card-shadow: 0 24px 48px -32px rgba(30, 64, 175, .35);--accent-color: #2563eb;--accent-gradient-start: #2563eb;--accent-gradient-end: #7c3aed;--accent-ring: rgba(59, 130, 246, .25);--accent-soft: rgba(37, 99, 235, .12);--accent-on-soft: #1e3a8a;--thumb-color: #2563eb;--chip-category-bg: rgba(59, 130, 246, .12);--chip-category-text: #1e3a8a;--chip-tech-bg: rgba(16, 185, 129, .15);--chip-tech-text: #047857;--chip-language-bg: rgba(236, 72, 153, .15);--chip-language-text: #9d174d;--popover-shadow: 0 18px 40px -28px rgba(30, 41, 59, .45)}html[data-theme=dark]{--app-background: #050816;--app-gradient: radial-gradient(circle at top, rgba(59, 130, 246, .22), transparent 60%), linear-gradient(180deg, #0f172a 0%, #020617 100%);--surface-panel: rgba(15, 23, 42, .82);--surface-panel-hover: rgba(30, 41, 59, .9);--surface-muted: rgba(30, 41, 59, .7);--surface-border: rgba(148, 163, 184, .28);--surface-border-strong: rgba(94, 114, 132, .5);--surface-input: rgba(15, 23, 42, .85);--text-primary: #f8fafc;--text-secondary: rgba(226, 232, 240, .75);--text-muted: rgba(148, 163, 184, .82);--card-gradient: linear-gradient(170deg, rgba(15, 23, 42, .9), rgba(30, 41, 59, .86));--card-border: rgba(59, 130, 246, .22);--card-shadow: 0 30px 60px -45px rgba(14, 165, 233, .45);--accent-color: #60a5fa;--accent-gradient-start: #38bdf8;--accent-gradient-end: #6366f1;--accent-ring: rgba(59, 130, 246, .35);--accent-soft: rgba(59, 130, 246, .22);--accent-on-soft: #f8fafc;--thumb-color: #38bdf8;--chip-category-bg: rgba(59, 130, 246, .2);--chip-category-text: #bfdbfe;--chip-tech-bg: rgba(34, 197, 94, .22);--chip-tech-text: #bbf7d0;--chip-language-bg: rgba(236, 72, 153, .26);--chip-language-text: #fbcfe8;--popover-shadow: 0 22px 48px -30px rgba(15, 23, 42, .78)}body{min-height:100vh;background:var(--app-gradient);background-color:var(--app-background);color:var(--text-primary);transition:background var(--motion-duration-long) var(--motion-ease),background-color var(--motion-duration-long) var(--motion-ease),color var(--motion-duration-long) var(--motion-ease)}button,input,select,textarea{font-family:inherit}*{box-sizing:border-box}a{color:inherit}.app-shell{min-height:100vh;display:flex;flex-direction:column}.app-header{padding:clamp(1.75rem,4vw,3rem) clamp(1.5rem,5vw,3.5rem) clamp(1.5rem,4vw,2.5rem);display:flex;flex-direction:column;gap:1.5rem;transition:color var(--motion-duration-long) var(--motion-ease),border-color var(--motion-duration-long) var(--motion-ease),background-color var(--motion-duration-long) var(--motion-ease)}.header-top{display:flex;flex-wrap:wrap;align-items:flex-start;justify-content:space-between;gap:1.5rem}.header-main h1{margin:0;font-size:clamp(2.2rem,5vw,3.3rem);font-weight:700}.header-main p{margin:.75rem 0 1.25rem;max-width:540px;color:var(--text-secondary);line-height:1.6}.header-counts{display:flex;flex-wrap:wrap;gap:.75rem;font-size:.95rem;color:var(--text-muted);transition:color var(--motion-duration) var(--motion-ease)}.header-counts .highlight{color:var(--accent-color);font-weight:600}.header-actions{display:flex;align-items:center;gap:.75rem}.search-bar{display:flex;flex-direction:column;gap:.5rem}.search-label{font-size:.85rem;color:var(--text-secondary)}.search-field{position:relative;display:flex;align-items:center;gap:.75rem;padding:.85rem 1rem;border-radius:1.1rem;background:var(--surface-input);border:1px solid var(--surface-border);box-shadow:0 12px 28px -24px #0f172a73;transition:border-color var(--motion-duration) var(--motion-ease),box-shadow var(--motion-duration) var(--motion-ease),background-color var(--motion-duration) var(--motion-ease),color var(--motion-duration) var(--motion-ease)}.search-field:focus-within{border-color:var(--accent-color);box-shadow:0 0 0 3px var(--accent-ring)}.search-icon{display:inline-flex;align-items:center;justify-content:center;color:var(--text-secondary)}.search-field input{flex:1;border:none;background:transparent;color:var(--text-primary);font-size:1rem;transition:color var(--motion-duration) var(--motion-ease)}.search-field input::placeholder{color:var(--text-secondary);opacity:.65}.search-field input:focus{outline:none}.search-clear{border:none;background:transparent;color:var(--text-secondary);border-radius:.75rem;padding:.25rem;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:color var(--motion-duration) var(--motion-ease),background-color var(--motion-duration) var(--motion-ease)}.search-clear:hover{color:var(--text-primary);background:var(--surface-muted)}.app-main{flex:1;padding:0 clamp(1.5rem,5vw,3.5rem) clamp(3rem,6vw,4rem);display:flex;flex-direction:column;gap:2rem;transition:color var(--motion-duration-long) var(--motion-ease),background-color var(--motion-duration-long) var(--motion-ease)}.demo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:clamp(1.25rem,3vw,2rem)}.demo-card{display:flex;flex-direction:column;gap:1.25rem;border-radius:1.4rem;padding:1.75rem;background:var(--card-gradient);border:1px solid var(--card-border);box-shadow:var(--card-shadow);transition:transform var(--motion-duration) var(--motion-ease),box-shadow var(--motion-duration) var(--motion-ease),border-color var(--motion-duration) var(--motion-ease),background var(--motion-duration-long) var(--motion-ease),color var(--motion-duration) var(--motion-ease)}.demo-card:hover{transform:translateY(-4px);border-color:var(--accent-color);box-shadow:0 28px 52px -30px #2563eb73}.demo-card-media{width:3.5rem;height:3.5rem;border-radius:1rem;overflow:hidden;background:var(--surface-muted);display:grid;place-items:center}.demo-card-media img{width:100%;height:100%;object-fit:cover}.demo-card-placeholder{font-size:1.4rem;font-weight:700;color:var(--accent-color)}.demo-card-body h3{margin:0;font-size:1.2rem;font-weight:600}.demo-card-description{margin:.65rem 0 0;color:var(--text-secondary);font-size:.97rem;line-height:1.6;transition:color var(--motion-duration) var(--motion-ease)}.demo-card-tags{display:flex;flex-wrap:wrap;gap:.5rem;list-style:none;padding:0;margin:1rem 0 0}.demo-card-tags .tag{font-size:.75rem;padding:.35rem .75rem;border-radius:999px;letter-spacing:.05em;text-transform:uppercase;display:inline-flex;align-items:center;gap:.35rem;transition:background-color var(--motion-duration) var(--motion-ease),color var(--motion-duration) var(--motion-ease)}.demo-card-tags .category{background:var(--chip-category-bg);color:var(--chip-category-text)}.demo-card-tags .tech{background:var(--chip-tech-bg);color:var(--chip-tech-text)}.demo-card-tags .language{background:var(--chip-language-bg);color:var(--chip-language-text)}.demo-card-footer{display:flex;justify-content:space-between;align-items:center;gap:1rem}.demo-card-meta{font-size:.85rem;color:var(--text-muted);transition:color var(--motion-duration) var(--motion-ease)}.demo-card-link{padding:.65rem 1.1rem;border-radius:.9rem;background:linear-gradient(135deg,var(--accent-gradient-start),var(--accent-gradient-end));color:#fff;text-decoration:none;font-weight:600;white-space:nowrap;box-shadow:0 12px 22px -18px #2563eb8c;transition:transform var(--motion-duration) var(--motion-ease),box-shadow var(--motion-duration) var(--motion-ease)}.demo-card-link:hover{transform:translateY(-2px);box-shadow:0 20px 32px -20px #4f46e58c}.theme-toggle{display:inline-flex;align-items:center;justify-content:center;width:3.5rem;height:2rem;border-radius:999px;border:1px solid var(--surface-border);background:var(--surface-panel);cursor:pointer;transition:border-color var(--motion-duration) var(--motion-ease),background-color var(--motion-duration) var(--motion-ease);padding:0}.theme-toggle:hover{border-color:var(--surface-border-strong);background:var(--surface-panel-hover)}.theme-toggle:focus-visible{outline:none;box-shadow:0 0 0 3px var(--accent-ring);border-color:var(--accent-color)}.theme-track{position:relative;width:100%;height:100%;border-radius:999px;display:flex;align-items:center;justify-content:space-between;padding:0 .35rem}.theme-track:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:inherit;background:transparent;transition:background-color var(--motion-duration) var(--motion-ease)}.theme-icon{color:var(--text-secondary);display:inline-flex;align-items:center;justify-content:center}.theme-thumb{position:absolute;top:50%;left:0;right:auto;width:1.32rem;height:1.32rem;border-radius:999px;background:var(--thumb-color);box-shadow:0 10px 18px -12px #2563eba6;transform:translate(.18rem,-50%);transition:transform var(--motion-duration) var(--motion-ease),background-color var(--motion-duration) var(--motion-ease),box-shadow var(--motion-duration) var(--motion-ease)}.theme-toggle.dark .theme-thumb{transform:translate(calc(3.5rem - .18rem - 1.32rem),-50%)}.language-menu{position:relative;display:inline-flex;flex-direction:column;align-items:stretch;min-width:8rem;flex-shrink:0}.language-trigger{display:inline-flex;align-items:center;gap:.45rem;padding:.45rem .85rem;border-radius:.9rem;border:1px solid var(--surface-border);background:var(--surface-panel);cursor:pointer;transition:border-color var(--motion-duration) var(--motion-ease),background-color var(--motion-duration) var(--motion-ease);width:100%;justify-content:space-between}.language-trigger:hover{border-color:var(--surface-border-strong);background:var(--surface-panel-hover)}.language-trigger:focus-visible{outline:none;box-shadow:0 0 0 3px var(--accent-ring);border-color:var(--accent-color)}.language-label{font-size:.9rem;color:var(--text-primary)}.language-caret{color:var(--text-secondary);transition:transform var(--motion-duration) var(--motion-ease)}.language-trigger[aria-expanded=true] .language-caret{transform:rotate(180deg)}.language-dropdown{position:absolute;top:calc(100% + .5rem);left:0;width:100%;padding:.35rem;border-radius:.85rem;border:1px solid var(--surface-border);background:var(--surface-panel);box-shadow:var(--popover-shadow);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:20;list-style:none;margin:0;animation:dropdownFade var(--motion-duration) var(--motion-ease);transition:background-color var(--motion-duration) var(--motion-ease),border-color var(--motion-duration) var(--motion-ease)}.language-dropdown button{width:100%;padding:.5rem .75rem;border-radius:.65rem;border:none;background:transparent;color:var(--text-primary);font-size:.9rem;text-align:left;cursor:pointer;transition:background-color var(--motion-duration) var(--motion-ease),color var(--motion-duration) var(--motion-ease);position:relative}.language-dropdown button:hover{background:var(--surface-muted)}.language-dropdown button.selected{background:var(--accent-soft);color:var(--accent-on-soft)}.language-dropdown li+li{margin-top:.25rem}.state{display:grid;place-items:center;text-align:center;padding:3.5rem 1.25rem;border-radius:1.4rem;background:var(--surface-panel);border:1px solid var(--surface-border);box-shadow:0 18px 32px -28px #0f172a80;gap:1rem;transition:background-color var(--motion-duration-long) var(--motion-ease),border-color var(--motion-duration) var(--motion-ease),color var(--motion-duration) var(--motion-ease)}.state.loading .spinner{width:2.8rem;height:2.8rem;border-radius:50%;border:4px solid rgba(148,163,184,.4);border-top-color:var(--accent-color);animation:spin 1s linear infinite}.state.loading span{color:var(--text-secondary);font-size:.95rem}.state.error p,.state.empty p{margin:0;color:var(--text-secondary);max-width:420px}.state button{padding:.75rem 1.5rem;border-radius:.9rem;border:none;font-weight:600;cursor:pointer;background:linear-gradient(135deg,var(--accent-gradient-start),var(--accent-gradient-end));color:#fff;transition:transform var(--motion-duration) var(--motion-ease),box-shadow var(--motion-duration) var(--motion-ease);box-shadow:0 16px 32px -22px #4f46e58c}.state button:hover{transform:translateY(-2px);box-shadow:0 18px 36px -22px #2563eb99}.app-footer{padding:2.25rem clamp(1.5rem,5vw,3.5rem);text-align:center;font-size:.9rem;color:var(--text-muted);transition:color var(--motion-duration-long) var(--motion-ease),background-color var(--motion-duration-long) var(--motion-ease)}.app-footer .footer-link{color:inherit;font-weight:600;text-decoration:none}.app-footer .footer-link:hover,.app-footer .footer-link:focus-visible{text-decoration:underline}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}@keyframes spin{to{transform:rotate(360deg)}}@keyframes dropdownFade{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}@media (max-width: 720px){.header-top{flex-direction:column;align-items:stretch}.header-actions{justify-content:flex-end}.demo-card{padding:1.5rem}.demo-card-footer{flex-direction:column;align-items:stretch}.demo-card-link{text-align:center}}