/* 视觉真源:docs/product/beta/ui.html(定稿视觉稿)。改设计先改 ui.md + ui.html。
   口径(ui.md §1):#212121 炭底 · #ECECEC 文字 · #9B9B9B 辅助 · #2F2F2F 软填充 ·
   发丝线 rgba(255,255,255,.13);全 app 唯一彩色是 logo 的篮球橙,且只以「光」出现;
   两处例外有理由:分享面板的 App 品牌色、删除确认的语义红。深色是唯一主题。 */
:root{
  --ink:#ECECEC; --sub:#9B9B9B; --bg:#212121; --soft:#2F2F2F;
  --line:rgba(255,255,255,.13); --orange:#F7702E; --red:#E5534B;
  --frame-h:320px;
}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{
  background:var(--bg); color:var(--ink);
  font-variant-numeric:tabular-nums;          /* 数字一律等宽,进度跳动不抖 */
  font-family:-apple-system,"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;
  -webkit-font-smoothing:antialiased; display:flex; flex-direction:column;
  overscroll-behavior-y:none;
}
button{font:inherit}
:focus-visible{outline:2px solid var(--orange); outline-offset:2px}

.appbar{display:flex;align-items:center;gap:8px;padding:14px 18px;flex:none}
.appbar .ball{width:22px;height:22px;color:var(--orange)}
.beta{font-size:9px;font-weight:600;letter-spacing:.12em;color:var(--sub);
      border:1px solid var(--line);border-radius:999px;padding:2px 7px}

main{flex:1;display:flex;flex-direction:column;overflow-y:auto;-webkit-overflow-scrolling:touch}
.screen{display:none;flex:1;flex-direction:column;align-items:center;
        padding:8px 18px 32px;gap:14px;text-align:center}
.screen.on{display:flex}
.screen.center{justify-content:center}

/* 画框:01 空框 → 04 扫描态 → 05 播放器,同一位置同高(ui.md §2 空间主线) */
.frame{position:relative;width:100%;max-width:420px;height:var(--frame-h);
       border-radius:14px;background:var(--soft);overflow:hidden;flex:none}
.frame .corner{position:absolute;width:22px;height:22px;border:2px solid rgba(255,255,255,.3)}
.frame .c1{top:10px;left:10px;border-right:0;border-bottom:0;border-radius:6px 0 0 0}
.frame .c2{top:10px;right:10px;border-left:0;border-bottom:0;border-radius:0 6px 0 0}
.frame .c3{bottom:10px;left:10px;border-right:0;border-top:0;border-radius:0 0 0 6px}
.frame .c4{bottom:10px;right:10px;border-left:0;border-top:0;border-radius:0 0 6px 0}
.frame .hint{position:absolute;inset:0;display:flex;flex-direction:column;gap:6px;
             align-items:center;justify-content:center;color:var(--sub);font-size:12.5px}
.frame video{width:100%;height:100%;object-fit:contain;background:#000;display:block}

/* 扫描态:光带自上而下扫过(04 屏) */
.scan::after{content:"";position:absolute;left:0;right:0;height:120px;
  background:linear-gradient(180deg,transparent,rgba(255,255,255,.07),transparent);
  animation:sweep 2.6s linear infinite}
@keyframes sweep{from{top:-120px}to{top:100%}}
@media (prefers-reduced-motion:reduce){.scan::after{animation:none;opacity:.5;top:40%}}

h1{font-size:22px;line-height:1.55;margin:6px 0 2px;font-weight:700;text-wrap:balance}
.body{font-size:12.5px;color:var(--sub);max-width:250px;margin:0;line-height:1.6}
.small{font-size:10.5px;color:var(--sub);line-height:1.6;max-width:250px}
/* 保留明示小字(ui.md §3c):挂在反馈入口下方,点之前就看见 */
.keep-note{font-size:10.5px;line-height:1.5;color:var(--sub);opacity:.8;max-width:250px}
.big{font-size:34px;font-weight:700;letter-spacing:-.01em}

.pill{border:0;border-radius:999px;padding:13px 22px;font-size:14px;font-weight:600;
      background:#fff;color:#111;cursor:pointer}
.pill.ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.pill:disabled{opacity:.38;cursor:not-allowed}
.pill.glow{box-shadow:0 12px 34px -14px var(--orange)}
.row{display:flex;gap:8px;align-items:center;justify-content:center;flex-wrap:wrap}
.linkbtn{background:none;border:0;color:var(--sub);font-size:11.5px;
         text-decoration:underline;text-underline-offset:3px;cursor:pointer;padding:4px}

/* 进度条:细条 + 每球刻度(05 屏进度条上白色刻度 = 每球入点) */
.bar{position:relative;width:100%;max-width:420px;height:4px;border-radius:2px;background:var(--soft)}
.bar .fill{position:absolute;left:0;top:0;bottom:0;border-radius:2px;background:#fff;width:0}
.bar .tick{position:absolute;top:-3px;width:2px;height:10px;background:#fff;border-radius:1px;opacity:.9}

.filecard{display:flex;gap:10px;align-items:center;width:100%;max-width:420px;
          background:var(--soft);border-radius:12px;padding:10px 12px;text-align:left}
.filecard .nm{font-size:12.5px;font-weight:600;word-break:break-all}
.filecard .mt{font-size:10.5px;color:var(--sub);margin-top:2px}
.ok{color:#10A37F;font-size:10.5px;flex:none}

/* 进球列表 */
.clips{width:100%;max-width:420px;display:flex;flex-direction:column}
.clip{display:flex;align-items:center;gap:10px;padding:11px 4px;border-bottom:1px solid var(--line);cursor:pointer}
.clip .thumb{width:34px;height:34px;border-radius:8px;background:var(--soft);flex:none;
             display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--sub)}
.clip .nm{font-size:13px}
.clip .mt{font-size:10.5px;color:var(--sub);margin-top:2px}
.clip .grow{flex:1;text-align:left}
.clip .flag{background:none;border:1px solid var(--line);border-radius:999px;
            color:var(--sub);font-size:11.5px;padding:5px 12px;cursor:pointer;flex:none}
.clip.confirming .flag{color:var(--red);border-color:rgba(229,83,75,.55);font-weight:600}
.clip.playing .nm{font-weight:700}

.toast{width:100%;max-width:420px;background:var(--soft);border-radius:12px;overflow:hidden;text-align:left}
.toast .r{display:flex;align-items:center;gap:8px;padding:10px 12px;font-size:11.5px}
.toast .r+.r{border-top:1px solid var(--line)}
.toast .r .act{margin-left:auto;background:none;border:0;color:var(--ink);
               font-size:11.5px;font-weight:600;text-decoration:underline;
               text-underline-offset:3px;cursor:pointer}
.toast .r .ask{color:var(--sub)}

/* 浮层:01b 超时长 / 01c 配额,同一个模子,4 秒自动消失 */
.overlay{position:fixed;inset:0;display:none;align-items:center;justify-content:center;
         background:rgba(0,0,0,.55);z-index:30;padding:24px}
.overlay.on{display:flex}
.overlay .card{background:#3A3A3A;border-radius:12px;padding:16px 20px;
               font-size:13px;line-height:1.75;text-align:center}
.dim{opacity:.35;transition:opacity .2s}

/* 分享面板:底部三键。品牌色是这里的例外——靠颜色辨认是用户肌肉记忆 */
.sheet{position:fixed;left:0;right:0;bottom:0;transform:translateY(100%);
       transition:transform .24s ease;background:#2B2B2B;border-radius:18px 18px 0 0;
       padding:18px 18px calc(18px + env(safe-area-inset-bottom));z-index:40}
.sheet.on{transform:translateY(0)}
.sheet h3{margin:0 0 14px;font-size:13px;color:var(--sub);font-weight:600;text-align:center}
.sheet .apps{display:flex;justify-content:space-around;gap:8px}
.sheet .app{background:none;border:0;color:var(--ink);font-size:11.5px;cursor:pointer;
            display:flex;flex-direction:column;align-items:center;gap:8px}
.sheet .ic{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;
           justify-content:center;font-size:20px;font-weight:700;color:#fff}
.sheet .cancel{margin-top:16px;width:100%}
@media (prefers-reduced-motion:reduce){.sheet{transition:none}}

.sticky{position:sticky;top:0;z-index:5;display:none;align-items:center;gap:10px;
        width:100%;max-width:420px;background:var(--bg);padding:8px 0;border-bottom:1px solid var(--line)}
.sticky.on{display:flex}
.sticky .mini{width:32px;height:32px;border-radius:999px;background:#fff;color:#111;
              border:0;font-size:13px;cursor:pointer;flex:none}
.sticky .sum{font-size:11.5px;color:var(--sub);flex:1;text-align:left}

/* 阶梯错位标题(ui.md §2)。
   62px 是 **280px 宽**视觉稿上的量值 = 22.1% 屏宽。Joe 2026-08-25 定:**按屏宽比例算**,
   这样不同手机上错位的观感一致(390px 上 ≈86px,320px 上 ≈71px)。
   上限锁在 93px = 420px 内容列宽 × 22.1%,免得桌面宽窗口下错位失控。 */
#s01-title{display:inline-block;text-align:left}
#s01-title .l1,#s01-title .l2{display:block}
#s01-title .l2{margin-left:min(22.14vw,93px)}

/* 自绘播放器:原生控件盖不住刻度,所以控件自己画 */
.playbtn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:56px;height:56px;border-radius:999px;border:0;cursor:pointer;
  background:rgba(255,255,255,.92);color:#111;display:flex;align-items:center;
  justify-content:center;padding-left:3px;transition:opacity .18s}
.playbtn.hidden{opacity:0;pointer-events:none}
.durbadge{position:absolute;right:12px;top:12px;font-size:10.5px;color:#fff;
  background:rgba(0,0,0,.45);border-radius:999px;padding:3px 8px}
.scrub{position:absolute;left:14px;right:14px;bottom:14px;padding:10px 0;cursor:pointer}
.scrub .track{position:relative;height:3px;border-radius:2px;background:rgba(255,255,255,.28)}
.scrub .played{position:absolute;left:0;top:0;bottom:0;border-radius:2px;background:#fff;width:0}
.scrub .tick{position:absolute;top:-3.5px;width:2px;height:10px;background:#fff;
  border-radius:1px;box-shadow:0 0 0 1px rgba(0,0,0,.35)}
@media (prefers-reduced-motion:reduce){.playbtn{transition:none}}

/* 04 滚动步进窗:三行,只有当前那行是亮的 */
.steps{width:100%;max-width:420px;display:flex;flex-direction:column;gap:6px;
  font-size:12px;text-align:left;padding:0 4px}
.steps .st{color:var(--sub);opacity:.35;transition:opacity .3s,color .3s}
.steps .now{color:var(--ink);opacity:1;font-weight:600}
.steps .past{opacity:.28}
.steps .next{opacity:.45}
@media (prefers-reduced-motion:reduce){.steps .st{transition:none}}