:root{
  --navy:#0D2B5E; --navy-deep:#081A40; --gold:#B8973A; --gold-soft:#D9C48A;
  --paper:#F4F5F3; --surface:#FFFFFF; --ink:#16213A; --ink-soft:#4A5468;
  --line:#E1E4E9; --line-soft:#EDEFF2;
  --ok:#2F6340; --ok-bg:#E8F1EA; --warn:#8A5512; --warn-bg:#FBF0E1;
  --danger:#B5322F; --danger-bg:#FBEAE9; --muted-bg:#EEF0F3;
  --focus:#2F5BB7;
}
@media (prefers-color-scheme: dark){
  :root{
    --navy:#C9D6EE; --navy-deep:#0B1526; --gold:#D9C48A; --gold-soft:#8A7434;
    --paper:#0F1522; --surface:#172033; --ink:#E7ECF5; --ink-soft:#A9B4C7;
    --line:#2A3650; --line-soft:#212B40;
    --ok:#8FCB9F; --ok-bg:#1D3326; --warn:#E8B270; --warn-bg:#3A2A14;
    --danger:#F0908D; --danger-bg:#3A1C1C; --muted-bg:#222C40; --focus:#8FB0F0;
  }
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.5 "Public Sans",system-ui,sans-serif}
h1,h2,h3{font-family:"Barlow Semi Condensed",sans-serif;font-weight:600;margin:0 0 .5rem;color:var(--ink)}
h1{font-size:1.7rem} h2{font-size:1.15rem;letter-spacing:.01em}
a{color:var(--focus)}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--focus);outline-offset:2px}
[hidden]{display:none !important}

.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;background:var(--navy-deep);color:#fff;position:sticky;top:0;z-index:5}
.brand{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.mark{font-family:"Barlow Semi Condensed";font-weight:700;background:var(--gold);color:#16213A;padding:2px 7px;border-radius:4px;font-size:.85rem}
.brand-name{font-family:"Barlow Semi Condensed";font-weight:600;font-size:1.1rem;color:#fff}
.brand-sub{color:#C9D3E6;font-size:.85rem}
.who{display:flex;align-items:center;gap:10px;font-size:.9rem;color:#E4E9F2}
.top .btn.ghost{color:#fff;border-color:rgba(255,255,255,.35)}

main{max-width:1180px;margin:0 auto;padding:20px 16px 60px}
.center{display:flex;justify-content:center;padding-top:8vh}
.card{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:16px;margin-bottom:14px}
.signin{max-width:420px;text-align:center;padding:28px}
.muted{color:var(--ink-soft)} .fine{color:var(--ink-soft);font-size:.83rem;margin:.5rem 0 0}
.notice{background:var(--warn-bg);color:var(--warn);padding:8px 10px;border-radius:6px;font-size:.88rem}
.prose{white-space:pre-wrap}

.btn{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--navy);background:var(--navy);color:var(--surface);padding:8px 14px;border-radius:7px;cursor:pointer;font-weight:600}
@media (prefers-color-scheme: dark){ .btn{color:#0B1526} }
.btn:disabled{opacity:.55;cursor:default}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.small{padding:5px 10px;font-size:.85rem}
.btn.google{background:#fff;color:#1f1f1f;border:1px solid #DADCE0;width:100%;justify-content:center;padding:11px;margin-top:10px}
.btn.okb{background:var(--ok);border-color:var(--ok)}
.linkbtn{background:none;border:0;color:var(--focus);text-decoration:underline;cursor:pointer;padding:0}
.row{display:flex;align-items:flex-end;flex-wrap:wrap} .gap{gap:10px} .grow{flex:1 1 220px} .mt{margin-top:10px}
.field{display:flex;flex-direction:column;gap:4px;font-size:.85rem;color:var(--ink-soft);margin-top:10px}
input[type=text],input[type=url],select,textarea{background:var(--surface);border:1px solid var(--line);border-radius:7px;padding:8px 10px;width:100%;color:var(--ink)}
textarea{resize:vertical;margin-top:8px}
.check{display:flex;align-items:center;gap:6px;font-size:.9rem;color:var(--ink-soft)}

.list-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:10px;flex-wrap:wrap}
.brief-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.brief-card{text-align:left;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;cursor:pointer;width:100%}
.brief-card:hover{border-color:var(--gold)}
.brief-card .code{font-size:.78rem;color:var(--ink-soft);letter-spacing:.03em}
.brief-card h3{margin:.2rem 0 .4rem;font-size:1.15rem}
.meta{display:flex;flex-wrap:wrap;gap:8px;align-items:center;font-size:.85rem;color:var(--ink-soft)}

.pill{display:inline-block;font-size:.75rem;font-weight:600;padding:2px 8px;border-radius:999px;background:var(--muted-bg);color:var(--ink-soft)}
.pill.ok{background:var(--ok-bg);color:var(--ok)} .pill.warn{background:var(--warn-bg);color:var(--warn)} .pill.bad{background:var(--danger-bg);color:var(--danger)}
.pill.blue{background:var(--navy);color:var(--surface)}

.brief-head{margin:12px 0 14px}
.brief-head .meta{margin-top:4px}
.grid{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:14px}
@media (max-width:900px){.grid{grid-template-columns:1fr}}

.drop{border:2px dashed var(--line);border-radius:10px;padding:18px;text-align:center;background:var(--paper)}
.drop.over{border-color:var(--gold);background:var(--warn-bg)}
.thumbs{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}
.thumb{border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--paper);cursor:pointer;text-align:left;padding:0;position:relative}
.thumb .img{aspect-ratio:4/3;background:var(--muted-bg) center/cover no-repeat;display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:.8rem;font-weight:600}
.thumb .cap{padding:6px 8px;font-size:.78rem;word-break:break-word}
.thumb .badge{position:absolute;top:6px;left:6px}
.folder{margin-top:14px}
.folder h3{font-size:.95rem;color:var(--ink-soft);margin-bottom:6px}

.scope{list-style:none;margin:0;padding:0}
.scope li{display:flex;gap:8px;padding:6px 0;border-bottom:1px solid var(--line-soft);font-size:.9rem}
.scope li:last-child{border-bottom:0}
.tick{width:18px;flex:0 0 18px;color:var(--ok);font-weight:700}

.req{border-bottom:1px solid var(--line-soft);padding:8px 0;font-size:.9rem}
.req:last-child{border-bottom:0}
.req .who-tag{font-size:.75rem;color:var(--ink-soft)}
.req .ans{margin-top:4px;padding-left:10px;border-left:3px solid var(--gold-soft);white-space:pre-wrap}

.thread{max-height:340px;overflow:auto;display:flex;flex-direction:column;gap:8px}
.msg{padding:8px 10px;border-radius:8px;background:var(--muted-bg);font-size:.9rem;white-space:pre-wrap}
.msg.me{background:var(--warn-bg)}
.msg .by{font-size:.75rem;color:var(--ink-soft);margin-bottom:2px}

.pay{display:flex;justify-content:space-between;gap:8px;align-items:center;padding:6px 0;border-bottom:1px solid var(--line-soft);font-size:.9rem}
.pay:last-child{border-bottom:0}

.prog{font-size:.85rem;color:var(--ink-soft);margin-top:8px}
.bar{height:6px;background:var(--muted-bg);border-radius:4px;overflow:hidden;margin-top:4px}
.bar>i{display:block;height:100%;background:var(--gold);width:0}

.spec-block{white-space:pre-wrap;font-size:.92rem}
.spec-changed{margin-top:8px}

.viewer{position:fixed;inset:0;background:rgba(5,10,20,.92);z-index:50;display:flex;flex-direction:column;color:#fff}
.viewer-bar{display:flex;justify-content:space-between;align-items:center;padding:10px 16px}
.viewer .btn.ghost{color:#fff;border-color:rgba(255,255,255,.4)}
.viewer-stage{flex:1;display:flex;align-items:center;justify-content:center;overflow:auto;padding:10px}
.viewer-media{position:relative;max-width:100%;max-height:100%}
.viewer-media img,.viewer-media video{max-width:92vw;max-height:72vh;display:block}
.pin{position:absolute;width:24px;height:24px;margin:-12px 0 0 -12px;border-radius:50%;background:var(--gold);color:#16213A;font-size:.75rem;font-weight:700;display:flex;align-items:center;justify-content:center;border:2px solid #fff}
.viewer-notes{max-height:22vh;overflow:auto;padding:8px 16px 16px;font-size:.9rem;background:#0B1526}
.viewer-notes .n{padding:4px 0;border-bottom:1px solid #22304a}

.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--ink);color:var(--surface);padding:10px 16px;border-radius:8px;z-index:60;max-width:90vw}