:root{--bg:#fff;--bg-soft:#f6f6f8;--card:#fff;--border:#ebebef;--text:#1f1f26;--muted:#7d7d88;--accent:#7c5cf0;--accent-2:#ec4899;--grad:linear-gradient(90deg, #7c5cf0, #ec4899);--radius:14px;--radius-sm:10px;--shadow-card:0 6px 24px #1f1f2614}*{box-sizing:border-box}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizelegibility;margin:0;font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Arial,sans-serif;overflow-x:hidden}button{font:inherit;color:inherit;cursor:pointer;background:0 0;border:none;padding:0}[role=button]:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}img{max-width:100%}::selection{background:#8b5cf666}.container{max-width:1280px;margin:0 auto;padding:0 20px}.site-header{z-index:100;-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border);background:#ffffffeb;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:16px;min-height:62px;display:flex}.brand{flex-shrink:0;align-items:center;gap:10px;display:inline-flex}.brand-icon{width:28px;height:28px}.brand-name{letter-spacing:.5px;white-space:nowrap;font-size:17px;font-weight:700}.btn-shuffle{color:#fff;background:var(--grad);white-space:nowrap;border-radius:999px;align-items:center;gap:6px;padding:8px 18px;font-size:14px;font-weight:600;transition:transform .2s,box-shadow .2s;display:inline-flex;box-shadow:0 4px 14px #7c5cf040}.btn-shuffle:hover{transform:translateY(-1px);box-shadow:0 6px 18px #ec489952}.hero{text-align:center;padding:56px 0 36px}.hero-badge{border:1px solid var(--border);color:var(--accent);letter-spacing:1px;background:var(--bg-soft);border-radius:999px;padding:6px 18px;font-size:13px;display:inline-block}.hero-title{letter-spacing:2px;margin:20px 0 8px;font-size:clamp(2.2rem,5.5vw,3.6rem);font-weight:800;line-height:1.15}.hero-title .grad{background:var(--grad);color:#0000;-webkit-background-clip:text;background-clip:text}.hero-sub{color:#55555f;margin:0;font-size:clamp(1rem,2.4vw,1.25rem);font-weight:600}.hero-desc{max-width:720px;color:var(--muted);margin:14px auto 0;font-size:15px;line-height:1.9}.section{padding:40px 0}.section-head{flex-wrap:wrap;align-items:baseline;gap:14px;margin-bottom:24px;display:flex}.section-title{margin:0;padding-left:15px;font-size:clamp(1.3rem,2.8vw,1.6rem);font-weight:700;position:relative}.section-title:before{content:"";background:var(--grad);border-radius:3px;width:5px;height:24px;position:absolute;top:50%;left:0;transform:translateY(-50%)}.section-note{color:var(--muted);font-size:13px}.video-grid{grid-template-columns:repeat(auto-fill,minmax(248px,1fr));gap:20px;display:grid}.video-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:transform .25s,border-color .25s,box-shadow .25s;overflow:hidden}.video-card:hover{box-shadow:var(--shadow-card);border-color:#7c5cf073;transform:translateY(-5px)}.thumb-wrap{aspect-ratio:680/410;background:#f2f2f5;position:relative;overflow:hidden}.thumb{-o-object-fit:cover;object-fit:cover;width:100%;height:100%;transition:transform .4s;display:block}.video-card:hover .thumb{transform:scale(1.05)}.thumb-badge{text-overflow:ellipsis;white-space:nowrap;color:#33333c;-webkit-backdrop-filter:blur(6px);background:#ffffffe0;border-radius:999px;max-width:80%;padding:3px 12px;font-size:12px;position:absolute;bottom:10px;left:10px;overflow:hidden}.play-mark{opacity:0;justify-content:center;align-items:center;transition:opacity .25s;display:flex;position:absolute;inset:0}.video-card:focus-visible .play-mark,.video-card:hover .play-mark{opacity:1}.card-body{padding:13px 14px 15px}.card-title{-webkit-line-clamp:2;line-clamp:2;-webkit-box-orient:vertical;min-height:45px;margin:0 0 9px;font-size:15px;font-weight:600;line-height:1.5;display:-webkit-box;overflow:hidden}.card-meta{color:var(--muted);align-items:center;gap:7px;font-size:12px;display:flex}.card-cat{text-overflow:ellipsis;white-space:nowrap;max-width:40%;color:var(--accent);overflow:hidden}.dot{opacity:.6}.card-hint{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.card-arrow{opacity:.75;flex-shrink:0;transition:transform .2s}.video-card:hover .card-arrow{transform:translate(3px)}.state-box{text-align:center;flex-direction:column;align-items:center;gap:16px;padding:68px 0;display:flex}.state-text{color:var(--muted);font-size:15px}.spinner{border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:34px;height:34px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(1turn)}}.load-sentinel{flex-direction:column;gap:14px;padding:34px 0 6px}.load-sentinel,.load-tip{align-items:center;display:flex}.load-tip{color:var(--muted);gap:10px;margin:0;font-size:13px;transition:color .2s}button.load-tip:hover{color:var(--accent)}.btn-retry{border:1px solid var(--border);color:var(--text);background:var(--bg-soft);border-radius:999px;padding:8px 24px;font-size:14px;transition:border-color .2s,color .2s}.btn-retry:hover{border-color:var(--accent);color:var(--accent)}.btn-primary{color:#fff;background:var(--grad);border-radius:999px;padding:12px 34px;font-size:15px;font-weight:600;transition:transform .2s;box-shadow:0 6px 18px #7c5cf047}.btn-primary:hover{transform:translateY(-2px)}.prose p{color:var(--muted);text-align:justify;margin:0 0 14px;font-size:15px;line-height:1.95}.prose p:last-child{margin-bottom:0}.faq-list{gap:14px;max-width:900px;display:grid}.faq-item{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:18px 22px;transition:border-color .2s}.faq-item:hover{border-color:#7c5cf059}.faq-q{margin:0 0 8px;font-size:16px;font-weight:600}.faq-a{color:var(--muted);margin:0;font-size:14px;line-height:1.8}.site-footer{background:var(--bg-soft);border-top:1px solid var(--border);margin-top:52px}.footer-inner{text-align:center;flex-direction:column;align-items:center;gap:8px;padding:40px 20px 36px;display:flex}.footer-brand{margin:0;font-size:16px;font-weight:700}.footer-domain{color:var(--accent);font-weight:600}.footer-note{color:var(--muted);margin:0;font-size:13.5px}.footer-copy{color:var(--muted);margin:8px 0 0;font-size:12.5px}.back-top{z-index:90;width:42px;height:42px;color:var(--text);border:1px solid var(--border);background:#fff;border-radius:50%;justify-content:center;align-items:center;transition:transform .2s,border-color .2s;display:flex;position:fixed;bottom:28px;right:24px;box-shadow:0 8px 24px #1f1f261f}.back-top:hover{border-color:var(--accent);transform:translateY(-2px)}.fade-enter-active,.fade-leave-active{transition:opacity .25s}.fade-enter-from,.fade-leave-to{opacity:0}.error-page{text-align:center;background:var(--bg);min-height:100vh;color:var(--text);flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:40px 20px;display:flex}.error-code{background:var(--grad);color:#0000;-webkit-background-clip:text;background-clip:text;font-size:72px;font-weight:800}.error-title{margin:0;font-size:22px;font-weight:700}.error-desc{color:var(--muted);margin:0 0 10px;font-size:15px}@media (width<=640px){.hero{padding:48px 0 32px}.video-grid{grid-template-columns:repeat(2,1fr);gap:12px}.card-body{padding:10px 10px 12px}.card-title{min-height:40px;font-size:13.5px}.back-top{bottom:20px;right:16px}}