:root{--bg:#f3f6f2;--surface:#fff;--ink:#152018;--muted:#4d5c52;--line:#c5d4c8;--brand:#1f6b45;--brand-deep:#134d30;--shadow:0 12px 32px rgba(21,32,24,.08);--max:1080px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font-family:"IBM Plex Sans","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:radial-gradient(900px 400px at 0% 0%,rgba(31,107,69,.12),transparent 55%),radial-gradient(700px 360px at 100% 5%,rgba(47,143,91,.1),transparent 50%),var(--bg);line-height:1.8}
a{color:var(--brand)}img{max-width:100%;height:auto;display:block}.container{width:min(100% - 2rem,var(--max));margin-inline:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:72px;gap:1rem}
.brand{display:flex;align-items:center;gap:.7rem;color:inherit;text-decoration:none}.brand img{width:42px;height:42px;border-radius:10px;object-fit:cover}
.brand-text{display:flex;flex-direction:column;line-height:1.15}.brand-text b{color:var(--brand-deep)}.brand-text span{font-size:.78rem;color:var(--muted)}
.nav{display:flex;gap:.3rem;align-items:center}.nav a{color:var(--ink);padding:.45rem .7rem;border-radius:10px;text-decoration:none;font-size:.92rem}
.nav a:hover,.nav a.active{background:#e4f2ea;color:var(--brand-deep)}
.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;width:44px;height:44px;cursor:pointer;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.menu-toggle span{width:18px;height:2px;background:var(--ink);display:block}
.hero-quest{padding:2.2rem 0 1.2rem}.quest-banner{background:linear-gradient(140deg,#134d30,#1f6b45 55%,#2a8054);color:#f2fff7;border-radius:20px;padding:1.8rem 1.6rem;box-shadow:var(--shadow)}
.quest-banner h1{margin:0 0 .7rem;font-size:clamp(1.5rem,2.7vw,2.15rem)}.quest-banner p{margin:0;max-width:40rem;color:#d4efe0}
.map-path{display:grid;gap:1rem;padding:1.8rem 0}
.map-card{display:grid;grid-template-columns:72px 1fr;gap:1rem;background:#fff;border:1px solid var(--line);border-radius:16px;padding:1.2rem;box-shadow:var(--shadow);position:relative}
.map-card::before{content:"";position:absolute;left:35px;top:72px;bottom:-18px;width:2px;background:linear-gradient(#1f6b45,#c5d4c8);opacity:.45}
.map-card:last-child::before{display:none}
.map-num{width:56px;height:56px;border-radius:50%;background:var(--brand);color:#fff;display:grid;place-items:center;font-weight:800;font-size:1.25rem}
.map-body h2{margin:0 0 .45rem;font-size:1.2rem;color:var(--brand-deep)}.map-body p{margin:0;color:var(--muted)}
.article-block{background:#fff;border:1px solid var(--line);border-radius:16px;padding:1.5rem;margin:1rem 0 2rem}.article-block h2{color:var(--brand-deep)}
.media-pair{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin:1rem 0}.media-pair figure{margin:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}.media-pair figcaption{padding:.5rem .7rem;font-size:.86rem;color:var(--muted);background:#f7faf7}
.btn-primary{display:inline-flex;padding:.7rem 1.2rem;background:var(--brand);color:#fff!important;border-radius:999px;text-decoration:none;font-weight:700}
.outlinks{display:flex;flex-wrap:wrap;gap:.7rem;margin:1rem 0}.outlinks a{background:#e8f5ee;border:1px solid var(--brand);color:var(--brand-deep);padding:.55rem 1rem;border-radius:999px;font-weight:700;text-decoration:none}
.partners{display:flex;flex-wrap:wrap;gap:.6rem}.partners img{height:34px;background:#fff;padding:5px 8px;border:1px solid var(--line);border-radius:8px}
.site-footer{background:#152018;color:#d5e2d8;padding:2rem 0 1rem;margin-top:2rem}.footer-grid{display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem}.footer-grid a{color:#a8c4b2;margin-right:.9rem}
.copyright{margin-top:1rem;font-size:.88rem;opacity:.8}.page-main{padding:1.6rem 0 2rem}.page-hero h1{color:var(--brand-deep)}
.simple-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:1.4rem;margin-top:1rem}
.error-page{min-height:100vh;display:grid;place-items:center;padding:2rem}.error-box{max-width:500px;width:100%;background:#fff;border:1px solid var(--line);border-radius:16px;padding:1.4rem;text-align:center}.error-box h1{font-size:2.8rem;color:var(--brand)}
@media (max-width:860px){.menu-toggle{display:flex}.nav{display:none;position:absolute;left:0;right:0;top:72px;background:#fff;flex-direction:column;padding:1rem;border-bottom:1px solid var(--line)}.nav.open{display:flex}.media-pair{grid-template-columns:1fr}}

/* official topbar - readable header strip */
.topbar{
  background:linear-gradient(90deg,#0b4ea2,#1260c4);
  color:#eef5ff;
  font-size:.86rem;
  padding:.45rem 0;
  line-height:1.4;
}
.topbar .container{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:.75rem;
  flex-wrap:nowrap;
}
.topbar-brand{font-weight:600;color:#fff;white-space:nowrap}
.topbar-domain{opacity:.92;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
@media (max-width:760px){
  .topbar{font-size:.8rem;padding:.4rem 0}
  .topbar .container{justify-content:center;gap:.35rem}
  .topbar-domain::before{content:"· ";opacity:.7}
}


/* ads: keep square, avoid oversized icons */
.ads-wrap.ads-header{
  margin:0;
  padding:.5rem .75rem .35rem;
  border:none;
  border-bottom:1px solid rgba(0,0,0,.06);
  border-radius:0;
  background:#fff;
}
.ads-wrap #ads{
  margin:4px 0 !important;
  gap:8px 12px !important;
}
.ads-wrap #ads img,.ads-header #ads img,#ads img{
  width:56px !important;
  height:56px !important;
  max-width:56px !important;
  max-height:56px !important;
  aspect-ratio:1/1 !important;
  object-fit:cover !important;
  object-position:center center;
  display:block;
  border-radius:12px;
}
.ads-wrap #ads figure{margin:0;width:56px}
.ads-wrap #ads > div{width:60px;flex:0 0 60px}
.ads-wrap #ads .caption,.ads-wrap #ads figcaption{
  font-size:11px;
  max-width:60px;
  margin-top:3px;
  color:#666;
}

/* full domain outlink chain */
.outlinks-chain{margin:1.2rem 0 1.6rem}
.outlinks-chain h2,.outlinks-chain h3{margin:0 0 .7rem;font-size:1.15rem}
.outlinks-chain p.note{margin:0 0 .8rem;color:#5b6b7f;font-size:.92rem}
.outlinks{
  display:flex;
  flex-wrap:wrap;
  gap:.55rem .65rem;
  margin:0;
}
.outlinks a{
  display:inline-flex;
  align-items:center;
  background:#fff;
  border:1px solid #c9daf0;
  border-radius:999px;
  padding:.4rem .85rem;
  color:#083a7a;
  text-decoration:none;
  font-weight:600;
  font-size:.88rem;
  line-height:1.3;
}
.outlinks a:hover{background:#eaf2fc;color:#0b4ea2;text-decoration:none}
.outlinks a .dom{
  margin-left:.35rem;
  font-weight:500;
  color:#5b6b7f;
  font-size:.8rem;
}
@media (max-width:760px){
  .outlinks a{font-size:.82rem;padding:.38rem .7rem}
  .outlinks a .dom{display:none}
}