@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@500;700&family=Noto+Sans+SC:wght@400;500;700&display=swap");
:root{
  --bg:#f3f6f4;
  --ink:#14212b;
  --muted:#5b6b76;
  --line:#d5dde3;
  --card:#fff;
  --accent:#1b7f6e;
  --accent-ink:#0f3d36;
  --max:740px;
  --font:"Noto Sans SC","DM Sans",system-ui,sans-serif;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--font);color:var(--ink);background:
  linear-gradient(180deg,#e7f0ec 0%,var(--bg) 220px);
  line-height:1.75}
a{color:var(--accent);text-underline-offset:3px}
a:hover{color:var(--accent-ink)}
.wrap{width:min(var(--max),calc(100% - 2rem));margin:0 auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(243,246,244,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:58px}
.brand{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--ink);font-weight:700}
.logo{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;background:var(--accent);color:#fff;font-size:13px}
.nav-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:8px;padding:.35rem .7rem;font:inherit}
.site-nav{display:flex;flex-wrap:wrap;gap:.75rem 1rem}
.site-nav a{color:var(--muted);text-decoration:none;font-size:.9rem}
.site-nav a:hover{color:var(--ink)}
.ads-wrap{width:min(var(--max),calc(100% - 2rem));margin:0 auto;padding:.6rem 0 0}
.main-content{padding:1.2rem 0 3rem}
.prose{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:1.35rem 1.3rem 1.7rem;box-shadow:0 8px 28px rgba(20,33,43,.04)}
.article-head{margin-bottom:1rem}
.kicker{margin:0;color:var(--accent);font-size:.8rem;font-weight:700;letter-spacing:.06em}
h1{margin:.35rem 0 .5rem;font-size:1.55rem;line-height:1.35}
.meta{margin:0;color:var(--muted);font-size:.9rem}
h2{margin:1.5rem 0 .6rem;font-size:1.15rem}
.toc{background:#f4faf7;border:1px solid #cfe3db;border-radius:12px;padding:.9rem 1rem;margin:1rem 0 1.2rem}
.toc ol{margin:.4rem 0 0;padding-left:1.2rem}
.card-list{list-style:none;padding:0}
.card-list li{margin:.5rem 0;padding:.75rem .9rem;border:1px solid var(--line);border-radius:12px;background:#fbfcfc}
.callout{margin-top:1.4rem;padding:.9rem 1rem;border-left:3px solid var(--accent);background:#f3faf7;border-radius:0 10px 10px 0}
.cmp{width:100%;border-collapse:collapse;font-size:.9rem;margin:1rem 0}
.cmp th,.cmp td{border:1px solid var(--line);padding:.55rem .5rem;vertical-align:top}
.cmp th{background:#eef6f3;text-align:left}
.checks li{margin:.45rem 0}
.faq{border-top:1px solid var(--line);padding-top:.9rem;margin-top:.9rem}
.faq:first-of-type{border-top:0;margin-top:0;padding-top:0}
.timeline{padding-left:1.1rem}
.site-footer{border-top:1px solid var(--line);padding:1.3rem 0 2rem;color:var(--muted);font-size:.9rem}
.footer-links{display:flex;flex-wrap:wrap;gap:.9rem}
.footer-links a{color:var(--muted)}
@media (max-width:860px){
  .nav-toggle{display:inline-block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:58px;background:#fff;border-bottom:1px solid var(--line);padding:.8rem 1rem 1rem;flex-direction:column}
  .site-nav.is-open{display:flex}
  h1{font-size:1.32rem}
}