:root{--bg:#f5f7fa;--surface:#fff;--surface-muted:#f0f3f8;--text:#1a2233;--text-muted:#5b667a;--border:#e3e8f0;--brand:#1a56db;--brand-dark:#143fb0;--brand-soft:#eaf0ff;--accent:#0ea5a5;--success:#16a34a;--radius:10px;--radius-lg:16px;--shadow:0 1px 2px #1018280a, 0 8px 24px #1018280f;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Roboto, Helvetica, Arial, sans-serif;--font-rtl:"Segoe UI", Tahoma, "Noto Sans Arabic", "Noto Sans Hebrew", "Geeza Pro", Arial, sans-serif;--mono:"SF Mono", "JetBrains Mono", ui-monospace, Menlo, Consolas, monospace}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;flex-direction:column;min-height:100vh;font-size:15px;line-height:1.6;display:flex}code{font-family:var(--mono);background:var(--surface-muted);color:var(--brand-dark);border-radius:6px;padding:.1em .4em;font-size:.92em}.site-header{background:var(--surface);border-bottom:1px solid var(--border);z-index:10;justify-content:space-between;align-items:center;height:60px;padding:0 24px;display:flex;position:sticky;top:0}.brand{color:var(--text);align-items:center;gap:10px;text-decoration:none;display:inline-flex}.brand-mark{background:var(--brand);color:#fff;letter-spacing:.5px;border-radius:8px;justify-content:center;align-items:center;width:30px;height:30px;font-size:14px;font-weight:700;display:flex}.brand-name{letter-spacing:.2px;font-weight:600}.site-main{flex:1;width:100%;max-width:760px;margin:0 auto;padding:40px 20px 60px}.site-footer{color:var(--text-muted);border-top:1px solid var(--border);justify-content:center;gap:8px;padding:20px;font-size:13px;display:flex}.site-footer .dot{opacity:.5}.lang-wrap{position:relative}.lang-btn{border:1px solid var(--border);background:var(--surface);width:38px;height:38px;color:var(--text);cursor:pointer;border-radius:9px;justify-content:center;align-items:center;transition:border-color .15s,background .15s;display:flex}.lang-btn:hover{border-color:var(--brand);color:var(--brand)}.lang-menu{top:calc(100% + 8px);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);min-width:168px;box-shadow:var(--shadow);z-index:30;flex-direction:column;gap:2px;max-height:60vh;padding:6px;display:flex;position:absolute;inset-inline-end:0;overflow-y:auto}.lang-item{text-align:start;color:var(--text);font-family:var(--font);cursor:pointer;background:0 0;border:none;border-radius:7px;padding:9px 12px;font-size:14px;transition:background .12s}.lang-item:hover{background:var(--surface-muted)}.lang-item-active{background:var(--brand-soft);color:var(--brand-dark);font-weight:600}.home{flex-direction:column;gap:24px;display:flex}.hero{text-align:center;padding-top:8px}.hero-compact{text-align:left;padding-top:0}.hero-title{letter-spacing:-.3px;margin:0 0 8px;font-size:28px;font-weight:700}.hero-compact .hero-title{font-size:22px}.hero-sub{color:var(--text-muted);margin:0;font-size:15px}.home-hint{text-align:center;color:var(--text-muted);margin:0;font-size:13px}.search-wrap{flex-direction:column;gap:16px;display:flex}.search-form{align-items:stretch;gap:12px;display:flex}.search-input{resize:vertical;border:1.5px solid var(--border);border-radius:var(--radius);min-height:60px;font-family:var(--mono);color:var(--text);background:var(--surface);outline:none;flex:1;padding:14px 16px;font-size:15px;transition:border-color .15s,box-shadow .15s}.search-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft)}.search-btn{border-radius:var(--radius);background:var(--brand);color:#fff;cursor:pointer;border:none;min-width:100px;padding:0 24px;font-size:16px;font-weight:600;transition:background .15s}.search-btn:hover{background:var(--brand-dark)}.search-btn:disabled{opacity:.6;cursor:default}.search-error{color:#dc2626;border-radius:var(--radius);background:#fef2f2;border:1px solid #fecaca;padding:10px 14px;font-size:14px}.skeleton{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);flex-direction:column;gap:14px;padding:24px;display:flex}.sk-line{background:linear-gradient(90deg,#eef1f6 25%,#e2e8f2 37%,#eef1f6 63%) 0 0/400% 100%;border-radius:6px;height:16px;animation:1.4s infinite shimmer}.sk-short{width:45%}@keyframes shimmer{0%{background-position:100% 0}to{background-position:0 0}}.results{flex-direction:column;gap:20px;display:flex}.track-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:24px}.track-empty{text-align:center;padding:40px 24px}.empty-title{margin-bottom:8px;font-size:18px;font-weight:600}.empty-desc{max-width:460px;color:var(--text-muted);margin:0 auto;font-size:14px}.track-head{border-bottom:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:12px 16px;padding-bottom:16px;display:flex}.track-head>div{min-width:0}.track-no{font-family:var(--mono);letter-spacing:.4px;word-break:normal;overflow-wrap:anywhere;font-size:20px;font-weight:700}.track-sub{color:var(--text-muted);margin-top:4px;font-size:13px}.status-badge{background:var(--brand-soft);color:var(--brand-dark);white-space:nowrap;border-radius:999px;flex-shrink:0;padding:6px 12px;font-size:13px;font-weight:600}.track-meta{flex-wrap:wrap;gap:24px;padding:16px 0;display:flex}.meta-item{flex-direction:column;gap:2px;display:flex}.meta-label{color:var(--text-muted);font-size:12px}.meta-value{font-size:14px;font-weight:500}.timeline{margin:8px 0 0;padding:0;list-style:none}.tl-item{gap:14px;display:flex}.tl-marker{flex-direction:column;align-items:center;width:14px;padding-top:5px;display:flex}.tl-dot{background:var(--border);border:2px solid var(--surface);width:10px;height:10px;box-shadow:0 0 0 1.5px var(--border);border-radius:50%;flex-shrink:0}.tl-current .tl-dot{background:var(--brand);box-shadow:0 0 0 1.5px var(--brand)}.tl-line{background:var(--border);flex:1;width:2px;margin:2px 0 0}.tl-body{flex:1;padding-bottom:20px}.tl-time{color:var(--text);font-variant-numeric:tabular-nums;font-size:13px;font-weight:600}.tl-clock{color:var(--text-muted);margin-left:8px;font-weight:400}.tl-desc{color:var(--text);word-break:break-word;margin-top:2px;font-size:14px}.tl-current .tl-desc{color:var(--brand-dark);font-weight:600}.tl-loc{color:var(--text-muted);margin-top:2px;font-size:12px}.track-foot{border-top:1px solid var(--border);color:var(--text-muted);margin-top:4px;padding-top:14px;font-size:12px}.home-hint{text-align:center;color:var(--text-muted);max-width:560px;margin:0 auto;font-size:13px;line-height:1.7}[dir=rtl] body{font-family:var(--font-rtl)}[dir=rtl] .search-input{text-align:right}[dir=rtl] .track-no{text-align:right;direction:ltr;unicode-bidi:embed}[dir=rtl] .tl-desc,[dir=rtl] .tl-loc,[dir=rtl] .tl-time,[dir=rtl] .lang-item{text-align:right}@media (max-width:560px){.hero-title{font-size:22px}.search-form{flex-direction:column}.search-btn{height:48px}.track-no{font-size:17px}}