:root{font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:#172e2c;background:#f3f5f0}*{box-sizing:border-box}body{margin:0}main{max-width:760px;margin:auto;padding:24px 20px}header{display:flex;justify-content:space-between;align-items:center}.tag{font-size:12px;font-weight:700;letter-spacing:1px}a{color:#197565;text-decoration:none}h1{font-size:30px;letter-spacing:-1px;margin:24px 0 8px}.muted{color:#6d7c75;font-size:14px;line-height:1.7}.camera{position:relative;background:#182925;border-radius:22px;overflow:hidden;aspect-ratio:3/4;margin-top:20px}video{width:100%;height:100%;object-fit:contain}.outline{position:absolute;pointer-events:none}#paper{fill:#16bb8120;stroke:#29dc9a;stroke-width:3;vector-effect:non-scaling-stroke}.camera>span{position:absolute;bottom:20px;left:12px;right:12px;text-align:center;background:#0c292bd9;color:white;padding:12px;border-radius:12px;font-size:14px}.stats{display:flex;justify-content:space-around;margin:22px 0;text-align:center;font-size:12px;color:#6d7c75}.stats strong{display:block;font-size:28px;color:#172e2c;margin-bottom:4px}.actions{display:flex;gap:8px}button{background:#137c69;color:white;border:0;border-radius:12px;padding:15px 18px;font-size:16px;font-weight:600;cursor:pointer;flex:1}.secondary{background:#e1e9e2;color:#265d50}button:disabled{opacity:.45;cursor:default}.options{display:flex;flex-wrap:wrap;gap:14px;margin:24px 0}input{accent-color:#137c69}#message{font-size:14px;line-height:1.6}.small{font-size:12px}.part-options{display:flex;gap:14px;align-items:center;background:#e9f0eb;border-radius:12px;padding:10px 14px;margin-bottom:8px}.part-label{font-size:13px;font-weight:600;color:#265d50}.part-options input{accent-color:#137c69}
.actions.vertical{flex-direction:column;max-width:420px;margin:32px auto}.actions.vertical button{padding:20px;font-size:18px}
.link{background:none;border:0;color:#197565;font-size:15px;font-weight:600;padding:10px 0;flex:0 0 auto;text-align:left;cursor:pointer}
.scan-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
.batch-card{background:#fff;border:1px solid #e0e7e0;border-radius:14px;padding:14px 16px;margin-bottom:10px;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.batch-card:hover{border-color:#137c69}.batch-card .name{font-size:16px;font-weight:600}.batch-card .meta{font-size:12px;color:#6d7c75;margin-top:4px}.batch-card .arrow{color:#9db0a6;font-size:20px}
.freeze[hidden]{display:none}.freeze{position:fixed;inset:0;background:#000000e6;z-index:60;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:20px}
.freeze img{max-width:94vw;max-height:72vh;border-radius:14px;background:#fff}.freeze-bar{display:flex;flex-direction:column;gap:12px;align-items:center}.freeze-bar .actions{width:min(420px,80vw)}.freeze-bar button{flex:1}
.rec-result{font-size:13px;color:#c9f0e4;text-align:center;min-height:18px}.rec-warn{color:#fca5a5}
select{padding:8px;border:1px solid #ced8cf;border-radius:10px;background:white;font-size:14px}
/* —— 统一总导航 —— */
.site-nav{position:sticky;top:0;z-index:100;background:#111827;color:#fff;display:flex;align-items:center;gap:6px;padding:0 12px;height:50px}
.site-nav .brand{font-weight:700;font-size:15px;color:#fff;text-decoration:none;white-space:nowrap}
.site-nav .nav-links{display:flex;gap:3px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.site-nav .nav-links::-webkit-scrollbar{display:none}
.site-nav a.nav{color:#cbd5e1;text-decoration:none;font-size:13px;padding:7px 11px;border-radius:8px;white-space:nowrap;flex-shrink:0}
.site-nav a.nav.active{background:#2563eb;color:#fff}
.site-nav a.nav:hover{background:#1f2937}
@media(max-width:420px){.site-nav .brand{font-size:13px}.site-nav a.nav{font-size:12px;padding:7px 8px}}