/* Portfolio web shell — shared chrome only. Product UI lives in feature/app.css. */
:root{--accent:#2563eb;--bg:#f8fafc;--fg:#0f172a;--muted:#64748b;--card:#fff;--line:#e2e8f0;--radius:14px;color-scheme:light dark}
@media (prefers-color-scheme:dark){:root{--bg:#0b1120;--fg:#e2e8f0;--muted:#94a3b8;--card:#111827;--line:#1f2937}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Noto Sans CJK SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--accent)}
.wrap{max-width:860px;margin:0 auto;padding:0 16px}
.top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--fg);text-decoration:none}
.brand img{width:32px;height:32px;border-radius:8px}
.top nav{display:flex;gap:14px;font-size:14px}
.hero{padding:8px 0 4px}
.hero h1{font-size:clamp(24px,5vw,34px);line-height:1.25;margin:.2em 0}
.hero p{color:var(--muted);margin:.2em 0 1em}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:12px 0}
.app{min-height:240px}
.btn{appearance:none;border:0;border-radius:10px;padding:10px 16px;font:inherit;font-weight:600;background:var(--accent);color:#fff;cursor:pointer}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent)}
.btn:disabled{opacity:.5;cursor:not-allowed}
input,select,textarea{font:inherit;color:inherit;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:9px 11px;max-width:100%}
.row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.muted{color:var(--muted)}
.features ul{padding-left:1.2em}
.prose h2{font-size:20px;margin-top:1.6em}
footer{color:var(--muted);font-size:13px;padding:24px 0 40px;border-top:1px solid var(--line);margin-top:24px}
footer a{color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.offline-badge{display:none;font-size:12px;color:var(--muted)}
html.offline .offline-badge{display:inline}
html.in-app .web-only{display:none!important}
/* paywall + pricing */
.pro-badge{display:inline-block;font-size:11px;font-weight:700;padding:1px 6px;border-radius:6px;background:var(--accent);color:#fff;vertical-align:middle;margin-left:4px}
dialog.paywall{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);color:var(--fg);max-width:420px;width:calc(100% - 32px);padding:20px}
dialog.paywall::backdrop{background:rgba(15,23,42,.5)}
dialog.paywall h2{margin:0 0 8px;font-size:20px}
dialog.paywall ul{padding-left:1.2em;margin:8px 0}
dialog.paywall .actions{display:flex;flex-direction:column;gap:8px;margin-top:14px}
dialog.paywall .msg{min-height:1.4em;font-size:14px;color:var(--muted)}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:12px}
.plans .card h2{margin-top:0}