:root{--doai-primary:#6c63ff;--doai-primary-strong:#4d43d6;--doai-primary-soft:#efedff;--doai-accent:#4cb5ff;--doai-success:#10b981;--doai-warning:#f59e0b;--doai-danger:#ef4444;--doai-surface-page:#f0f0f3;--doai-surface-card:#fff;--doai-surface-sunken:#f4f6fb;--doai-text-heading:#2d3436;--doai-text-body:#636e72;--doai-text-muted:#b2bec3;--doai-border-muted:#e4eaf5;--doai-danger-soft:#ef44441f;--doai-danger-border:#fecaca;--doai-overlay:#00000073;--doai-media-bg:#000;--doai-shadow-raised:#aeb8d1b3;--doai-shadow-soft:0 8px 24px #2d343614;--doai-radius-lg:16px;--doai-radius-xl:20px;--doai-radius-2xl:24px;--doai-page-max:1240px;--doai-header-height:64px}@media (prefers-color-scheme:dark){:root{--doai-primary-soft:#2a2750;--doai-surface-page:#14161c;--doai-surface-card:#1d2027;--doai-surface-sunken:#23262e;--doai-text-heading:#eef1f6;--doai-text-body:#b3bac6;--doai-text-muted:#7d8695;--doai-border-muted:#2e323c;--doai-danger-soft:#ef444433;--doai-danger-border:#7f1d1d;--doai-overlay:#000000a6;--doai-shadow-raised:#00000080;--doai-shadow-soft:0 8px 24px #00000059}}:root[data-theme=dark]{--doai-primary-soft:#2a2750;--doai-surface-page:#14161c;--doai-surface-card:#1d2027;--doai-surface-sunken:#23262e;--doai-text-heading:#eef1f6;--doai-text-body:#b3bac6;--doai-text-muted:#7d8695;--doai-border-muted:#2e323c;--doai-danger-soft:#ef444433;--doai-danger-border:#7f1d1d;--doai-overlay:#000000a6;--doai-shadow-raised:#00000080;--doai-shadow-soft:0 8px 24px #00000059}:root[data-theme=light]{--doai-primary:#6c63ff;--doai-primary-soft:#efedff;--doai-surface-page:#f0f0f3;--doai-surface-card:#fff;--doai-surface-sunken:#f4f6fb;--doai-text-heading:#2d3436;--doai-text-body:#636e72;--doai-text-muted:#b2bec3;--doai-border-muted:#e4eaf5;--doai-danger-soft:#ef44441f;--doai-danger-border:#fecaca;--doai-overlay:#00000073;--doai-shadow-raised:#aeb8d1b3;--doai-shadow-soft:0 8px 24px #2d343614}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:calc(var(--doai-header-height) + 16px)}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{transition-duration:.001ms!important;animation-duration:.001ms!important;animation-iteration-count:1!important}}html,body{margin:0;padding:0}body{background:var(--doai-surface-page);color:var(--doai-text-heading);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{font-family:inherit}:focus-visible{outline:2px solid var(--doai-primary);outline-offset:2px;border-radius:6px}.doai-container{width:100%;max-width:var(--doai-page-max);margin:0 auto;padding:0 24px}.doai-skip-link{z-index:100;background:var(--doai-primary);color:#fff;border-radius:0 0 12px;padding:10px 16px;position:absolute;top:0;left:-9999px}.doai-skip-link:focus{left:0}.doai-card-hover{transition:transform .18s,box-shadow .18s}.doai-card-hover:hover{transform:translateY(-3px);box-shadow:0 14px 32px #2d343624}.doai-category-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:20px;display:grid}.doai-category-tile{background:var(--doai-surface-card);box-shadow:var(--doai-shadow-soft);text-align:center;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;gap:6px;padding:12px 8px;display:flex}.doai-category-badge{background:var(--doai-primary-soft);width:28px;height:28px;color:var(--doai-primary);border-radius:9px;flex-shrink:0;justify-content:center;align-items:center;font-size:13px;font-weight:700;display:flex}.doai-category-name{max-width:100%;color:var(--doai-text-heading);white-space:nowrap;text-overflow:ellipsis;font-size:13px;font-weight:700;overflow:hidden}.doai-category-count{color:var(--doai-text-muted);font-size:11px}@media (min-width:760px){.doai-category-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:14px}.doai-category-tile{padding:16px 10px}.doai-category-badge{border-radius:11px;width:34px;height:34px;font-size:15px}.doai-category-name{font-size:14px}}.doai-clamp-2{-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.doai-clamp-3{-webkit-line-clamp:3;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}@keyframes doai-pulse{0%{opacity:1}50%{opacity:.45}to{opacity:1}}.doai-skeleton{background:var(--doai-border-muted);border-radius:10px;animation:1.4s ease-in-out infinite doai-pulse}@keyframes doai-spin{to{transform:rotate(360deg)}}.doai-spinner{border:3px solid var(--doai-border-muted);border-top-color:var(--doai-primary);border-radius:50%;width:28px;height:28px;animation:.8s linear infinite doai-spin}@keyframes doai-fade-up{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.doai-fade-up{animation:.28s both doai-fade-up}@media (max-width:768px){.doai-desktop-only{display:none!important}}@media (min-width:769px){.doai-mobile-only{display:none!important}}