:root{
  --bg:#f7f8fb; --card:#fff; --ink:#1c2230; --muted:#5d6678; --line:#e4e8f0;
  --brand:#4f46e5; --brand-ink:#fff; --brand-soft:#eef0ff; --warn-bg:#fff7e6; --warn-line:#f5d9a0; --warn-ink:#7a4b00;
  --radius:16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);line-height:1.7;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",system-ui,sans-serif;
  -webkit-text-size-adjust:100%}
.wrap{max-width:860px;margin:0 auto;padding:0 20px}
a{color:var(--brand)}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em;background:#f0f2f7;padding:.1em .4em;border-radius:6px;word-break:break-all}

.hero{padding:64px 0 36px;background:linear-gradient(180deg,#eef0ff 0%,var(--bg) 100%)}
.eyebrow{margin:0 0 8px;color:var(--brand);font-weight:600;font-size:.9rem;letter-spacing:.04em}
.hero h1{margin:0 0 12px;font-size:clamp(1.9rem,6vw,2.8rem);line-height:1.25;letter-spacing:-.01em}
.lead{margin:0 0 22px;color:var(--muted);font-size:1.05rem;max-width:36em}
.jump{display:flex;flex-wrap:wrap;gap:8px}
.jump a{padding:6px 14px;border:1px solid var(--line);border-radius:999px;background:#fff;color:var(--ink);text-decoration:none;font-size:.9rem}
.jump a:hover{border-color:var(--brand);color:var(--brand)}

main{padding-bottom:24px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;margin:20px 0;box-shadow:0 1px 2px rgba(20,30,60,.04);scroll-margin-top:16px}
.card-head{display:flex;flex-wrap:wrap;align-items:center;gap:10px}
.card h2{margin:0;font-size:1.5rem}
.tag{font-size:.75rem;padding:2px 10px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-weight:600}
.ver{font-size:.78rem;color:var(--muted);font-family:ui-monospace,Menlo,Consolas,monospace;border:1px solid var(--line);border-radius:999px;padding:1px 10px}
.ver[hidden]{display:none}
.sub{margin:2px 0 12px;color:var(--muted)}
.card p{margin:.5em 0}
.feat{margin:14px 0 18px;padding:0;list-style:none;display:grid;gap:10px}
.feat li{padding:10px 14px;background:#fafbfd;border:1px solid var(--line);border-radius:12px}
.feat b{display:block;font-size:.95rem}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 4px}
.btn{display:inline-block;padding:10px 20px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);text-decoration:none;font-weight:600;font-size:.95rem;min-height:44px;line-height:1.4}
.btn:hover{border-color:var(--brand);color:var(--brand)}
.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.btn.primary:hover{background:#4338ca;color:#fff}
.hint{font-size:.85rem;color:var(--muted)}
.note{margin-top:12px!important;padding:10px 14px;background:var(--warn-bg);border:1px solid var(--warn-line);color:var(--warn-ink);border-radius:12px;font-size:.92rem}

#changelog h3{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:6px;margin:22px 0 6px;font-size:1.05rem}
.more{font-size:.85rem;font-weight:500;text-decoration:none}
.more:hover{text-decoration:underline}
.log{list-style:none;margin:0;padding:0;border-left:2px solid var(--line)}
.log li{position:relative;padding:6px 0 6px 18px;display:grid;gap:2px}
.log li::before{content:"";position:absolute;left:-6px;top:15px;width:10px;height:10px;border-radius:50%;background:#fff;border:2px solid var(--brand)}
.log code{justify-self:start;align-self:start;margin-top:3px}
.log span{color:var(--muted);font-size:.93rem}

.foot{padding:28px 0 40px;color:var(--muted);font-size:.85rem}
.foot .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}
.foot a{color:var(--muted)}

@media (min-width:720px){
  .hero{padding:88px 0 48px}
  .card{padding:32px}
  .feat{grid-template-columns:1fr 1fr}
  .log li{grid-template-columns:200px 1fr;gap:12px}
}