/* 演示评审站样式（自包含，独立于主服务） */
:root {
  --blue-900:#0e2540; --blue-700:#174a70; --blue-600:#1f5e8c; --blue-500:#2878b5;
  --blue-100:#ddecf6; --blue-50:#f0f7fb;
  --ink:#172033; --text:#344054; --muted:#667085; --weak:#98a2b3;
  --line:#e4e7ec; --border:#d0d5dd; --bg:#f4f6f9; --surface:#fff;
  --accent:#2878b5; --accent-soft:#eaf3fa;
  --feedback:#e8862c; --feedback-soft:#fdf1e3;
  --danger:#c33a32;
  --shadow:0 10px 30px rgba(23,32,51,.12);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:14px/1.6 "Noto Sans SC","Microsoft YaHei","PingFang SC",system-ui,-apple-system,sans-serif}
button{cursor:pointer;font:inherit}
a{color:var(--blue-600);text-decoration:none}
a:hover{text-decoration:underline}

/* 顶栏 */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;height:58px;padding:0 26px;background:linear-gradient(90deg,var(--blue-900),var(--blue-700));color:#fff;box-shadow:0 2px 10px rgba(14,37,64,.25)}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:8px;background:#fff;color:var(--blue-700);font-weight:700}
.brand strong,.brand small{display:block}
.brand small{color:#b9ccda;font-size:11px;margin-top:1px}
.top-nav{display:flex;gap:6px}
.top-nav a{color:#d7e3ee;padding:7px 13px;border-radius:6px;font-size:13px}
.top-nav a:hover{background:rgba(255,255,255,.12);text-decoration:none;color:#fff}

.app{max-width:1360px;margin:0 auto;padding:26px 28px 80px}
.loading{padding:60px 0;text-align:center;color:var(--muted)}
.muted{color:var(--muted)}
.error-box{margin:40px auto;max-width:560px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--danger);border-radius:8px;padding:18px 20px}
.error-box code{background:#f2f4f7;padding:2px 6px;border-radius:4px;font-size:12px}

/* 首页 */
.hero{background:linear-gradient(135deg,#fff 0%,var(--blue-50) 100%);border:1px solid var(--line);border-radius:12px;padding:26px 30px;margin-bottom:24px}
.hero h1{margin:0 0 6px;font-size:21px}
.hero p{margin:0;color:var(--muted);font-size:13px}
.hero .hero-meta{display:flex;gap:10px;margin-top:14px;flex-wrap:wrap}
.hero .meta-chip{background:#fff;border:1px solid var(--line);border-radius:99px;padding:4px 13px;font-size:12px;color:var(--text)}
.hero .hero-actions{margin-top:18px;display:flex;gap:10px;flex-wrap:wrap}

.section-title{display:flex;align-items:baseline;gap:10px;margin:26px 0 12px}
.section-title h2{margin:0;font-size:16px}
.section-title span{color:var(--muted);font-size:12px}

.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.feature-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:10px;padding:16px 16px 14px;transition:.15s ease;position:relative;overflow:hidden}
.feature-card:hover{border-color:var(--blue-500);box-shadow:var(--shadow);transform:translateY(-2px)}
.feature-card .idx{position:absolute;right:12px;top:10px;font-size:26px;font-weight:700;color:var(--blue-50);-webkit-text-stroke:1px var(--blue-100)}
.feature-card h3{margin:0 0 6px;font-size:14px;max-width:82%}
.feature-card .howto{margin:0 0 12px;color:var(--muted);font-size:12px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.feature-card .card-foot{display:flex;align-items:center;justify-content:space-between;gap:8px}
.feature-card .dur{font-size:11px;color:var(--weak);font-variant-numeric:tabular-nums;white-space:nowrap}
.feature-card .actor-chip{display:inline-flex;align-items:center;gap:5px;font-size:11px;color:var(--blue-600);background:var(--accent-soft);border-radius:99px;padding:2px 9px;white-space:nowrap;max-width:130px;overflow:hidden;text-overflow:ellipsis}
.feature-card .card-foot .button{white-space:nowrap;flex:none}

/* 按钮 */
.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;height:34px;padding:0 15px;border-radius:6px;border:1px solid transparent;font-size:13px;font-weight:500;transition:.15s}
.button.primary{background:var(--blue-600);color:#fff;border-color:var(--blue-600)}
.button.primary:hover{background:var(--blue-700)}
.button.ghost{background:#fff;color:var(--blue-600);border-color:var(--border)}
.button.ghost:hover{background:var(--blue-50)}
.button.small{height:28px;padding:0 11px;font-size:12px}

/* 观看页布局 */
.watch-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:18px;align-items:start}
.watch-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.watch-head h1{margin:0;font-size:18px;flex:1;min-width:200px}
.mode-badge{font-size:12px;background:var(--accent-soft);color:var(--blue-600);border-radius:99px;padding:4px 12px;white-space:nowrap}
.mode-badge.clip{background:var(--feedback-soft);color:#b05e10}

.player-card{background:#000;border-radius:10px;overflow:hidden;box-shadow:var(--shadow);position:relative}
.video-stage{position:relative;line-height:0}
video{display:block;width:100%;aspect-ratio:16/10;object-fit:fill;background:#000}
/* 画框交互层 */
.draw-layer{position:absolute;inset:0;cursor:crosshair;touch-action:none}
.rect-preview{position:absolute;border:2px solid var(--feedback);background:rgba(232,134,44,.12);border-radius:3px;pointer-events:none;box-shadow:0 0 0 1px rgba(255,255,255,.5)}
.rect-flash{position:absolute;border:2px solid var(--feedback);background:rgba(232,134,44,.14);border-radius:3px;pointer-events:none;animation:rect-in .18s ease}
@keyframes rect-in{from{opacity:0;transform:scale(1.04)}to{opacity:1;transform:none}}

.clip-end-overlay{position:absolute;inset:0;background:rgba(10,22,35,.78);display:grid;place-items:center;color:#fff;z-index:5}
.clip-end-overlay[hidden]{display:none}
.clip-end-overlay .inner{text-align:center;display:grid;gap:14px;justify-items:center}
.clip-end-overlay p{margin:0;font-size:15px}
.clip-end-overlay .row{display:flex;gap:10px}

/* 控制条 */
.controls{display:flex;align-items:center;gap:10px;padding:10px 14px;background:#101c29;color:#dbe6ef}
.ctrl-btn{width:36px;height:36px;border-radius:8px;border:0;background:rgba(255,255,255,.1);color:#fff;font-size:14px;display:grid;place-items:center;flex:none}
.ctrl-btn:hover{background:rgba(255,255,255,.2)}
.ctrl-btn:disabled{opacity:.35;cursor:not-allowed}
.time-display{font-size:12px;font-variant-numeric:tabular-nums;color:#aebdcb;white-space:nowrap}
.timeline{position:relative;flex:1;display:flex;gap:3px;height:22px;align-items:center}
.timeline .seg{position:relative;height:7px;border-radius:4px;background:rgba(255,255,255,.16);cursor:pointer;transition:height .12s}
.timeline .seg:hover{height:11px}
.timeline .seg.played{background:var(--accent)}
.timeline .seg.current{background:#5fa8dd}
.timeline .fb-dot{position:absolute;top:50%;width:9px;height:9px;border-radius:50%;background:var(--feedback);border:2px solid #101c29;transform:translate(-50%,-50%);z-index:2;cursor:pointer}
.timeline .fb-dot:hover{transform:translate(-50%,-50%) scale(1.35)}

.current-chapter-strip{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:0 0 10px 10px;border-top:0;padding:12px 16px}
.current-chapter-strip .ch-idx{flex:none;width:30px;height:30px;border-radius:8px;display:grid;place-items:center;background:var(--accent-soft);color:var(--blue-600);font-weight:700;font-size:13px}
.current-chapter-strip h3{margin:0 0 2px;font-size:13px}
.current-chapter-strip p{margin:0;color:var(--muted);font-size:12px}

/* 右栏 */
.side-panel{display:grid;gap:14px}
.panel{background:#fff;border:1px solid var(--line);border-radius:10px;padding:14px}
.panel h3{margin:0 0 10px;font-size:13px;display:flex;align-items:center;gap:8px}
.panel h3 .count{color:var(--muted);font-weight:400;font-size:11px}
.chapter-list{display:grid;gap:2px;max-height:340px;overflow-y:auto}
.chapter-item{display:flex;gap:9px;align-items:flex-start;width:100%;text-align:left;border:0;background:transparent;border-radius:7px;padding:8px 9px}
.chapter-item:hover{background:var(--blue-50)}
.chapter-item.active{background:var(--accent-soft)}
.chapter-item .n{flex:none;width:20px;height:20px;border-radius:6px;background:#eef1f5;color:var(--muted);display:grid;place-items:center;font-size:11px;font-weight:600;margin-top:1px}
.chapter-item.active .n{background:var(--blue-600);color:#fff}
.chapter-item .t{min-width:0}
.chapter-item .t b{display:block;font-size:12.5px;font-weight:600;color:var(--ink)}
.chapter-item .t small{display:block;color:var(--muted);font-size:10.5px;margin-top:1px}

.fb-button-row{display:flex}
.fb-button-row .button{width:100%}
.fb-list{display:grid;gap:8px}
.fb-item{border:1px solid var(--line);border-radius:8px;padding:9px 11px;cursor:pointer;transition:.12s;position:relative}
.fb-item:hover{border-color:var(--feedback);background:var(--feedback-soft)}
.fb-item .fb-meta{display:flex;gap:7px;align-items:center;font-size:11px;color:var(--muted);margin-bottom:3px;flex-wrap:wrap}
.fb-item .fb-meta .t-mark{color:var(--feedback);font-weight:700;font-variant-numeric:tabular-nums}
.fb-item .fb-meta .rect-tag{background:var(--feedback-soft);color:#b05e10;border-radius:4px;padding:0 6px;font-size:10px}
.fb-item p{margin:0;font-size:12.5px;color:var(--text)}
.fb-item .fb-del{position:absolute;right:7px;top:6px;border:0;background:transparent;color:var(--weak);font-size:13px;line-height:1;padding:3px;border-radius:4px}
.fb-item .fb-del:hover{color:var(--danger);background:#fff}
.fb-empty{color:var(--muted);font-size:12px;text-align:center;padding:14px 0}

/* 反馈抽屉（浮动侧栏，不挡视频：反馈画框时视频保持可交互） */
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(380px,94vw);background:#fff;z-index:95;box-shadow:-12px 0 40px rgba(10,22,35,.25);display:flex;flex-direction:column;animation:drawer-in .18s ease}
.drawer[hidden]{display:none}
@keyframes drawer-in{from{transform:translateX(24px);opacity:0}to{transform:none;opacity:1}}
.drawer-head{display:flex;align-items:flex-start;justify-content:space-between;padding:18px 20px 12px;border-bottom:1px solid var(--line)}
.drawer-head h2{margin:0;font-size:16px}
.drawer-kicker{margin:0 0 3px;color:var(--blue-600);font-size:10px;letter-spacing:.14em;font-weight:700}
.icon-btn{border:0;background:transparent;font-size:22px;color:var(--muted);border-radius:6px;width:32px;height:32px}
.icon-btn:hover{background:#f2f4f7}
.drawer-body{padding:16px 20px 20px;display:grid;gap:13px;overflow-y:auto}
.fb-context{display:flex;gap:8px;align-items:center;background:var(--feedback-soft);border-radius:8px;padding:8px 12px;font-size:12px;color:#7c4a10}
.fb-context .fb-time{font-weight:700;font-variant-numeric:tabular-nums}
.fb-field{display:grid;gap:5px;font-size:12px;color:var(--text)}
.fb-field input,.fb-field textarea{border:1px solid var(--border);border-radius:6px;padding:8px 10px;font:inherit;font-size:13px;outline:none;width:100%}
.fb-field textarea{min-height:90px;resize:vertical}
.fb-field input:focus,.fb-field textarea:focus{border-color:var(--blue-500);box-shadow:0 0 0 3px rgba(40,120,181,.15)}
.fb-draw-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.draw-toggle.active{background:var(--feedback-soft);color:#b05e10;border-color:var(--feedback)}
.draw-hint{font-size:11px;color:var(--muted)}
.draw-actions{display:flex;align-items:center;gap:9px}
.button.draw-toggle.active{background:var(--feedback-soft);color:#b05e10;border-color:var(--feedback)}
.drawer-foot{display:flex;justify-content:flex-end;gap:9px;margin-top:2px}
.button.danger-ghost{background:#fff;color:var(--danger);border-color:#e5aaa6}
.button.danger-ghost:hover{background:#fcecea}

/* toast */
.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%);background:#1f2937;color:#fff;padding:10px 18px;border-radius:8px;font-size:13px;z-index:120;box-shadow:0 10px 30px rgba(17,24,39,.3)}
.toast.err{background:var(--danger)}

/* 使用说明页 */
.guide-box{background:#fff;border:1px solid var(--line);border-radius:10px;padding:24px 28px;max-width:760px}
.guide-box h2{margin:18px 0 8px;font-size:15px}
.guide-box h2:first-child{margin-top:0}
.guide-box p,.guide-box li{color:var(--text);font-size:13px}
.guide-box ol{padding-left:20px;margin:8px 0}
.guide-box li{margin:5px 0}
.guide-box code{background:#f2f4f7;border-radius:4px;padding:1px 6px;font-size:12px}

@media(max-width:1020px){
  .watch-layout{grid-template-columns:1fr}
  .app{padding:20px 16px 70px}
}