/* RV Atlas — global stylesheet */
:root{
  --bg:#f5f7f9;
  --surface:#ffffff;
  --surface-2:#f0f4f7;
  --ink:#152230;
  --ink-2:#33465a;
  --muted:#61748a;
  --line:#e2e9f0;
  --brand:#0f6b4f;
  --brand-ink:#0a4d39;
  --accent:#c2620f;
  --accent-soft:#fdf3e7;
  --warn:#8a5a00;
  --warn-bg:#fff8e6;
  --radius:14px;
  --maxw:1160px;
  --shadow:0 1px 2px rgba(16,32,48,.06),0 8px 24px rgba(16,32,48,.05);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  font-size:16.5px;line-height:1.68;
}
a{color:var(--brand-ink);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.small{font-size:13.5px}
.muted{color:var(--muted)}
.center{text-align:center}

/* ---------------- language bar ---------------- */
.langbar{background:#0d1b26;color:#cfe0ea;border-bottom:1px solid #0a141d}
.langbar .wrap{display:flex;align-items:center;gap:10px;overflow-x:auto;padding-top:9px;padding-bottom:9px;scrollbar-width:thin}
.langbar .lbl{font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:#8fa9bb;white-space:nowrap;margin-right:6px}
.langbar a{
  color:#d9e6ee;font-size:13.5px;white-space:nowrap;padding:4px 11px;border-radius:999px;
  border:1px solid rgba(255,255,255,.16);transition:.15s
}
.langbar a:hover{background:rgba(255,255,255,.12);text-decoration:none;color:#fff}
.langbar a.on{background:#2f9e77;color:#04231a;border-color:#2f9e77;font-weight:600}
.langbar .sep{width:1px;height:18px;background:rgba(255,255,255,.18);flex:none}

/* ---------------- header ---------------- */
header.site{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
header.site .bar{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;letter-spacing:-.01em;color:var(--ink)}
.brand .mark{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,#0f6b4f,#2f9e77);color:#fff;display:grid;place-items:center;font-size:15px}
nav.main{margin-left:auto;display:flex;gap:16px;flex-wrap:wrap}
nav.main a{color:var(--ink-2);font-size:14.5px;font-weight:500}
nav.main a:hover{color:var(--brand);text-decoration:none}

/* ---------------- hero / home ---------------- */
.hero{background:linear-gradient(160deg,#0f6b4f 0%,#0a4d39 60%,#073b2c 100%);color:#eaf5f0;padding:52px 0 44px}
.hero h1{margin:0 0 12px;font-size:clamp(28px,4.4vw,44px);line-height:1.16;letter-spacing:-.02em}
.hero p{max-width:760px;margin:0 0 20px;color:#cfe6dc;font-size:17px}
.hero .kpis{display:flex;gap:26px;flex-wrap:wrap;margin-top:22px}
.hero .kpi b{display:block;font-size:26px;line-height:1.2}
.hero .kpi span{font-size:13px;color:#a9ccc0;letter-spacing:.03em}
.hero .cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.btn{display:inline-block;background:#fff;color:#0a4d39;font-weight:600;padding:11px 20px;border-radius:10px;font-size:15px}
.btn.ghost{background:rgba(255,255,255,.12);color:#eaf5f0;border:1px solid rgba(255,255,255,.3)}
.btn:hover{text-decoration:none;filter:brightness(.97)}

section.band{padding:38px 0}
section.band.alt{background:var(--surface-2);border-block:1px solid var(--line)}
h2.sec{font-size:clamp(20px,2.4vw,26px);margin:0 0 6px;letter-spacing:-.01em}
p.lede{color:var(--muted);margin:0 0 22px;max-width:820px}

.grid{display:grid;gap:16px}
.g3{grid-template-columns:repeat(auto-fill,minmax(290px,1fr))}
.g4{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.g2{grid-template-columns:repeat(auto-fill,minmax(360px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);transition:.15s}
.card:hover{border-color:#c9d8e2}
.card h3{margin:0 0 6px;font-size:17.5px}
.card p{margin:0;color:var(--muted);font-size:14.6px}
.card .tag{display:inline-block;font-size:12px;background:var(--surface-2);color:var(--brand-ink);border-radius:6px;padding:2px 8px;margin-bottom:8px}
.card ul{margin:10px 0 0;padding-left:18px;color:var(--muted);font-size:14px}
.card li{margin:3px 0}

/* ---------------- answer box (GEO/AEO) ---------------- */
.answer{background:var(--surface);border:1px solid #b9ddcf;border-left:4px solid var(--brand);border-radius:10px;padding:16px 20px;margin:0 0 26px}
.answer .k{font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--brand-ink);font-weight:700;margin-bottom:6px}
.answer p{margin:0;font-size:17px;line-height:1.62}

/* ---------------- prose ---------------- */
.prose{max-width:820px}
.prose h2{font-size:23px;margin:32px 0 10px;letter-spacing:-.01em}
.prose h3{font-size:18.5px;margin:22px 0 8px}
.prose p{margin:0 0 14px;color:var(--ink-2)}
.prose ul,.prose ol{padding-left:22px;color:var(--ink-2)}
.prose li{margin:6px 0}

.meta-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:0 0 18px}
.pill{font-size:12.5px;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:4px 12px;color:var(--ink-2)}

/* ---------------- tables ---------------- */
.tblwrap{overflow-x:auto;margin:0 0 22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{padding:11px 15px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
th{background:var(--surface-2);font-weight:600;color:var(--ink-2);white-space:nowrap}
tr:last-child td{border-bottom:none}
td b{color:var(--ink)}

/* ---------------- faq ---------------- */
details.faq{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);margin-bottom:10px;box-shadow:var(--shadow)}
details.faq summary{cursor:pointer;padding:15px 18px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px;align-items:center}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary::after{content:"+";color:var(--brand);font-weight:700;font-size:19px}
details.faq[open] summary::after{content:"\2212"}
details.faq .body{padding:0 18px 16px;color:var(--ink-2)}

/* ---------------- list pages ---------------- */
.pagehead{padding:34px 0 18px}
.pagehead h1{margin:0 0 8px;font-size:clamp(26px,3.4vw,38px);letter-spacing:-.02em}
.pagehead p{margin:0;color:var(--muted);max-width:780px}

.crumbs{font-size:13.5px;color:var(--muted);padding:14px 0 0}
.crumbs a{color:var(--muted)}

/* ---------------- disclaimer ---------------- */
.note{border-radius:var(--radius);padding:14px 18px;margin:0 0 22px;font-size:14.6px}
.note.warn{background:var(--warn-bg);border:1px solid #f0dcae;color:#6a4a06}
.note.info{background:#eef6f2;border:1px solid #cfe6dc;color:#0d4a37}
.note b{display:block;margin-bottom:4px}

.disclaimer-list{list-style:none;padding:0;margin:0}
.disclaimer-list li{border-bottom:1px solid var(--line);padding:14px 0}
.disclaimer-list li:last-child{border-bottom:none}
.disclaimer-list b{display:block;margin-bottom:4px}

/* ---------------- footer ---------------- */
footer.site{background:#0d1b26;color:#a8c0cf;margin-top:48px;padding:34px 0 26px;font-size:14px}
footer.site a{color:#cfe0ea}
footer.site h4{color:#fff;margin:0 0 10px;font-size:14px;letter-spacing:.04em;text-transform:uppercase}
footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:24px}
footer .legal{border-top:1px solid rgba(255,255,255,.12);margin-top:24px;padding-top:16px;font-size:13px;color:#8fa9bb}

/* ---------------- home stats / regions ---------------- */
.strip{display:flex;gap:14px;flex-wrap:wrap;margin-top:8px}
.strip .s{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:12px 16px;min-width:132px}
.strip .s b{display:block;font-size:22px;color:var(--brand-ink)}
.strip .s span{font-size:12.5px;color:var(--muted)}

/* ---------------- search ---------------- */
.searchbox{display:flex;gap:10px;margin:0 0 18px}
.searchbox input{flex:1;padding:12px 14px;border:1px solid var(--line);border-radius:10px;font-size:15.5px;background:var(--surface)}
.searchbox input:focus{outline:2px solid #bfe0d3;border-color:var(--brand)}

/* ---------------- photo galleries ---------------- */
.gallery{display:grid;gap:14px;margin:0 0 26px}
.gallery.g2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.gallery.g3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.gallery.g4{grid-template-columns:repeat(auto-fit,minmax(210px,1fr))}
.shot{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.shot a{display:block;background:#e9eef1}
.shot img{display:block;width:100%;height:230px;object-fit:cover;transition:transform .25s ease}
.shot a:hover img{transform:scale(1.03)}
.shot figcaption{padding:9px 12px;font-size:13px;color:var(--muted);border-top:1px solid var(--line)}
/* 图片来源声明：压在图注下面一行。虚线分隔 + 更小字号，跟正文区别开，
   让它明确是「这句不属于图注」——图注是在描述照片，这句是在撇清。 */
.shot figcaption .imgdisc{display:block;margin-top:7px;padding-top:7px;border-top:1px dashed var(--line);font-size:11.5px;line-height:1.5;opacity:.75}
footer .legal .contentdisc{margin:10px 0 0;font-size:12px;line-height:1.6;opacity:.8}
.gallery.g2 .shot img{height:320px}
@media(max-width:640px){.shot img{height:190px}.gallery.g2 .shot img{height:220px}}

/* ---------------- official-site callouts ---------------- */
.visit{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--brand);
  border-radius:var(--radius);padding:16px 20px;margin:0 0 24px;display:flex;gap:16px;
  align-items:center;flex-wrap:wrap;justify-content:space-between}
.visit .vtxt{font-size:14.8px;color:var(--ink-2)}
.visit .vtxt b{display:block;color:var(--ink);margin-bottom:2px}
.btn.visit-btn{background:var(--brand);color:#fff;font-size:14.5px;padding:10px 18px}
.btn.visit-btn:hover{filter:brightness(1.05);text-decoration:none}
.extlink::after{content:" \2197";opacity:.6;font-size:12px}

/* ---------------- misc ---------------- */
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}
.badge{font-size:12px;background:var(--accent-soft);color:var(--accent);border-radius:6px;padding:3px 9px}
hr.sp{border:none;border-top:1px solid var(--line);margin:28px 0}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px 20px;margin:0 0 24px}
.toc b{font-size:13px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted)}
.toc ol{margin:8px 0 0;padding-left:20px;color:var(--ink-2);font-size:14.6px}
.toc li{margin:4px 0}
@media(max-width:640px){
  nav.main{gap:12px}
  header.site .bar{flex-wrap:wrap;padding:10px 0}
  .hero{padding:34px 0 30px}
  body{font-size:16px}
}