/* ==========================================================================
   VPNAK — nodes.css
   节点 / 线路页专属样式:页头渐变带、地区跳转、地区线路块、地区徽章墙、
   选线建议列表。全部颜色引用 base.css 的 :root 令牌。
   ========================================================================== */

/* ---- page head ---- */
.page-head{
  position:relative;
  overflow-x:clip;
  padding-top:48px;
  padding-bottom:44px;
  background-image:
    linear-gradient(var(--grid-line) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid-line) 1px,transparent 1px),
    linear-gradient(180deg,var(--hero-top) 0%,var(--hero-bottom) 100%);
  background-size:32px 32px,32px 32px,100% 100%;
}
.page-head::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:84px;z-index:1;pointer-events:none;
  background:linear-gradient(180deg,transparent 0%,var(--bg) 100%);
}
.page-head .wrap{position:relative;z-index:2}
.page-head h1{
  font-size:clamp(32px,4.4vw,54px);
  line-height:1.14;
  margin:16px 0 14px;
}
.page-head .lede{max-width:800px}
.head-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:24px}
.head-facts{margin-top:26px}

/* ---- region anchor row ---- */
.anchor-row{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 32px}
.anchor-row a{
  display:inline-flex;align-items:center;min-height:38px;padding:0 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--border);background:var(--bg-panel);
  font-size:13.5px;font-weight:600;color:var(--muted);
  box-shadow:0 8px 18px -14px var(--shadow-tint),inset 0 1px 0 var(--highlight);
  transition:color .18s ease,border-color .18s ease,transform .18s ease;
}
.anchor-row a:hover{color:var(--accent);border-color:var(--accent);transform:translateY(-1px)}

/* ---- region blocks ---- */
.region-block{margin-top:36px;scroll-margin-top:96px;min-width:0}
.region-block:first-of-type{margin-top:0}
.region-head{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin-bottom:10px}
.region-head h3{font-size:clamp(19px,2vw,22px)}
.region-flag{display:inline-flex;align-items:center;gap:6px}
.region-flag svg{width:20px;height:20px;flex-shrink:0;display:block}
.region-note{
  max-width:880px;margin-bottom:14px;
  font-size:13.8px;line-height:1.78;color:var(--muted);
}

/* ---- region badge wall ---- */
.region-wall{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(158px,1fr));
  gap:12px;
}
.region-chip{
  display:flex;align-items:center;gap:10px;min-width:0;
  padding:10px 14px;
  background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-sm);
  font-size:13.5px;font-weight:600;
  box-shadow:0 12px 26px -22px var(--shadow-tint),inset 0 1px 0 var(--highlight);
  transition:transform .18s ease,box-shadow .18s ease;
}
.region-chip:hover{transform:translateY(-2px);box-shadow:0 18px 32px -20px var(--shadow-tint-strong),inset 0 1px 0 var(--highlight)}
.region-chip svg{width:22px;height:22px;flex-shrink:0;display:block}
.region-chip span{min-width:0;overflow-wrap:anywhere}

/* ---- advice list ---- */
.advice-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:24px}
.advice-list li{
  display:flex;gap:14px;min-width:0;
  padding:18px 20px;
  background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-sm);
  box-shadow:0 16px 36px -26px var(--shadow-tint),inset 0 1px 0 var(--highlight);
  transition:transform .18s ease,box-shadow .18s ease;
}
.advice-list li:hover{transform:translateY(-2px);box-shadow:0 22px 44px -24px var(--shadow-tint-strong),inset 0 1px 0 var(--highlight)}
.advice-ic{
  width:36px;height:36px;flex-shrink:0;border-radius:var(--radius-sm);
  display:grid;place-items:center;
  background:var(--accent-soft);color:var(--accent);
}
.advice-ic svg{width:19px;height:19px;display:block}
.advice-list b{display:block;font-family:var(--font-display);font-size:15px;font-weight:800;margin-bottom:6px}
.advice-list p{font-size:13.5px;line-height:1.75;color:var(--muted)}

/* ---- responsive ---- */
@media (max-width:900px){
  .advice-list{grid-template-columns:1fr}
}
@media (max-width:768px){
  .page-head{padding-top:36px;padding-bottom:32px}
  .region-wall{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px}
  .region-head{gap:10px}
}
@media (max-width:640px){
  .head-ctas{flex-direction:column;align-items:stretch}
  .head-ctas .btn{width:100%}
  .anchor-row{gap:8px}
  .anchor-row a{min-height:36px;padding:0 12px;font-size:13px}
  .region-wall{grid-template-columns:repeat(auto-fill,minmax(126px,1fr))}
  .region-chip{padding:9px 12px;font-size:13px}
  .advice-list li{padding:16px 16px}
}