/* Clash 使用指南专栏 · 共享样式 (dl-clash.com.cn) */
:root {
  --bg: #050d18;
  --bg2: #0a1526;
  --panel: rgba(255,255,255,.05);
  --panel-strong: rgba(255,255,255,.08);
  --border: rgba(255,255,255,.09);
  --text: #eef5ff;
  --muted: #9fb0c9;
  --primary: #4b8dff;
  --primary2: #66ddff;
  --shadow: 0 24px 70px rgba(0,0,0,.35);
  --radius: 24px;
  --container: 1180px;
  --prose: 820px;
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 0%, rgba(75,141,255,.22), transparent 28%),
    radial-gradient(circle at 88% 8%, rgba(102,221,255,.14), transparent 24%),
    linear-gradient(180deg, #050d18 0%, #07101d 28%, #0a1422 100%);
  line-height: 1.8;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: .2s; }
a:hover { color: var(--primary2); }
.container { width: min(var(--container), calc(100% - 32px)); margin: 0 auto; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(5,13,24,.78); backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 700; font-size: 18px; }
.brand-badge {
  width: 38px; height: 38px; border-radius: 11px;
  background: #fff url('/logo.png') center / 30px no-repeat;
  box-shadow: 0 12px 28px rgba(75,141,255,.30); font-size: 0;
}
.nav { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.nav a { color: var(--muted); font-size: 15px; }
.nav a:hover, .nav a.active { color: #fff; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 20px; border-radius: 13px; font-weight: 700;
  border: 1px solid transparent; transition: .18s ease; cursor: pointer;
}
.btn-primary { color: #fff; background: linear-gradient(135deg, var(--primary), #6996ff 58%, var(--primary2)); box-shadow: 0 16px 34px rgba(75,141,255,.28); }
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-2px); }
.btn-secondary { color: #fff; background: rgba(255,255,255,.04); border-color: rgba(255,255,255,.1); }
.btn-secondary:hover { background: rgba(255,255,255,.08); transform: translateY(-2px); }

/* Breadcrumb */
.breadcrumb { font-size: 13px; color: var(--muted); padding: 22px 0 0; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--primary2); }
.breadcrumb span { color: #cdd9ee; }

/* Hub hero */
.hub-hero { padding: 30px 0 8px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 8px 14px; border-radius: 999px;
  background: rgba(75,141,255,.12); border: 1px solid rgba(102,221,255,.16); color: #dce9ff; font-size: 14px; margin-bottom: 16px;
}
.hub-hero h1 { margin: 0 0 16px; font-size: clamp(30px, 5vw, 52px); line-height: 1.12; letter-spacing: -.02em; }
.hub-hero p { margin: 0; color: var(--muted); font-size: 17px; max-width: 760px; }
.hub-actions { display: flex; gap: 14px; margin-top: 26px; flex-wrap: wrap; }

/* Section */
.section { padding: 34px 0; }
.section-heading { margin-bottom: 22px; }
.cat-title { display: flex; align-items: center; gap: 10px; margin: 0 0 4px; font-size: clamp(20px, 3vw, 28px); }
.cat-title .ico { font-size: 22px; }
.cat-desc { margin: 0; color: var(--muted); font-size: 15px; }

/* Article cards (hub) */
.guide-grid { display: grid; gap: 18px; grid-template-columns: repeat(2, minmax(0,1fr)); }
.guide-card {
  display: flex; flex-direction: column; background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 24px; transition: .3s;
}
.guide-card:hover { border-color: rgba(75,141,255,.32); background: var(--panel-strong); transform: translateY(-3px); }
.guide-card .kw { font-size: 12px; color: var(--primary2); background: rgba(102,221,255,.1); padding: 2px 9px; border-radius: 6px; align-self: flex-start; margin-bottom: 12px; }
.guide-card h3 { margin: 0 0 10px; font-size: 18px; color: #fff; line-height: 1.4; }
.guide-card p { margin: 0 0 16px; color: var(--muted); font-size: 14px; flex: 1; }
.guide-card .more { font-size: 14px; font-weight: 700; color: var(--primary2); }

/* Article body */
.article { padding: 8px 0 10px; }
.article-head { max-width: var(--prose); margin: 0 auto 10px; }
.article-head h1 { margin: 10px 0 14px; font-size: clamp(28px, 4.4vw, 44px); line-height: 1.18; letter-spacing: -.02em; }
.article-meta { color: var(--muted); font-size: 14px; display: flex; gap: 16px; flex-wrap: wrap; }
.article-lead {
  max-width: var(--prose); margin: 14px auto 0; padding: 18px 20px; border-radius: 16px;
  background: rgba(75,141,255,.07); border: 1px solid rgba(75,141,255,.18); color: #d7e6ff; font-size: 15.5px;
}
.prose { max-width: var(--prose); margin: 0 auto; }
.prose h2 { margin: 38px 0 14px; font-size: clamp(22px, 3.2vw, 30px); line-height: 1.3; scroll-margin-top: 90px; }
.prose h3 { margin: 26px 0 10px; font-size: 19px; color: #eaf2ff; }
.prose p { margin: 0 0 16px; color: #c7d4e8; font-size: 16px; }
.prose ul, .prose ol { margin: 0 0 16px; padding-left: 22px; color: #c7d4e8; font-size: 16px; }
.prose li { margin: 6px 0; }
.prose strong { color: #fff; }
.prose a { color: var(--primary2); text-decoration: underline; text-underline-offset: 3px; }
.prose code {
  background: rgba(75,141,255,.15); color: var(--primary2); padding: 1px 6px; border-radius: 5px;
  font-family: Consolas, Monaco, monospace; font-size: 14px; word-break: break-word;
}
.prose pre {
  background: #060d18; border: 1px solid rgba(255,255,255,.1); border-radius: 14px; padding: 18px;
  font-family: Consolas, Monaco, monospace; font-size: 13.5px; color: #4ade80; overflow-x: auto; line-height: 1.7; margin: 0 0 18px;
}
.prose pre code { background: none; color: inherit; padding: 0; font-size: inherit; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14.5px; margin: 0 0 18px; }
.prose th { text-align: left; padding: 11px 14px; color: var(--primary2); font-weight: 600; border-bottom: 1px solid var(--border); }
.prose td { padding: 10px 14px; color: var(--muted); border-bottom: 1px solid rgba(255,255,255,.05); vertical-align: top; }
.callout {
  margin: 0 0 18px; padding: 16px 20px; border-radius: 14px; font-size: 15px; line-height: 1.7;
  background: rgba(74,222,128,.07); border: 1px solid rgba(74,222,128,.2); color: #cfeedd;
}
.callout.warn { background: rgba(251,191,36,.07); border-color: rgba(251,191,36,.22); color: #ecd9a6; }
.callout.tip strong, .callout.warn strong { color: #fff; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 6px; font-size: 11px; font-weight: 600; }
.badge-green { background: rgba(74,222,128,.15); color: #4ade80; }
.badge-blue { background: rgba(75,141,255,.15); color: #7eb3ff; }
.badge-yellow { background: rgba(251,191,36,.12); color: #fbbf24; }

/* TOC */
.toc { max-width: var(--prose); margin: 6px auto 26px; padding: 18px 22px; border-radius: 16px; background: var(--panel); border: 1px solid var(--border); }
.toc strong { display: block; font-size: 14px; color: #fff; margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 20px; color: var(--muted); font-size: 14.5px; }
.toc li { margin: 4px 0; }
.toc a { color: var(--muted); }
.toc a:hover { color: var(--primary2); }

/* Step list */
.steps { display: grid; gap: 14px; margin: 0 0 18px; }
.step { display: flex; gap: 16px; align-items: flex-start; background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 18px 20px; }
.step-num { width: 32px; height: 32px; border-radius: 9px; background: linear-gradient(135deg, var(--primary), var(--primary2)); display: grid; place-items: center; font-weight: 800; font-size: 15px; color: #fff; flex-shrink: 0; }
.step-body h4 { margin: 0 0 6px; font-size: 16px; color: #fff; }
.step-body p { margin: 0; color: var(--muted); font-size: 14.5px; }

/* Related / prev-next */
.related { max-width: var(--prose); margin: 30px auto 0; }
.related h2 { font-size: 20px; margin: 0 0 14px; }
.related-grid { display: grid; gap: 14px; grid-template-columns: repeat(2, minmax(0,1fr)); }
.related-card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 18px 20px; transition: .25s; }
.related-card:hover { border-color: rgba(75,141,255,.3); background: var(--panel-strong); }
.related-card .kw { font-size: 12px; color: var(--primary2); }
.related-card h3 { margin: 6px 0 0; font-size: 15.5px; color: #fff; line-height: 1.45; }

.cta-box {
  max-width: var(--prose); margin: 30px auto 0; padding: 24px; border-radius: 20px; text-align: center;
  background: linear-gradient(180deg, rgba(75,141,255,.1), rgba(75,141,255,.03)); border: 1px solid rgba(75,141,255,.2);
}
.cta-box h3 { margin: 0 0 8px; font-size: 20px; color: #fff; }
.cta-box p { margin: 0 0 16px; color: var(--muted); font-size: 14.5px; }

/* Disclaimer + footer */
.disclaimer-box {
  max-width: var(--prose); margin: 30px auto 0; padding: 22px 24px; border-radius: 18px;
  background: rgba(255,95,86,.04); border: 1px dashed rgba(255,95,86,.2); font-size: 13.5px; color: var(--muted); line-height: 1.7;
}
.disclaimer-box strong { color: #ff7a72; }
.site-footer { padding: 36px 0; border-top: 1px solid rgba(255,255,255,.06); color: var(--muted); font-size: 14px; text-align: center; margin-top: 40px; }
.site-footer a { color: var(--muted); }
.site-footer a:hover { color: var(--primary2); }
.site-footer .links { font-size: 13px; margin-top: 8px; opacity: .75; }

@media (max-width: 980px) {
  .guide-grid, .related-grid { grid-template-columns: 1fr; }
  .header-inner { flex-direction: column; padding: 14px 0; gap: 10px; }
  .nav { justify-content: center; gap: 14px; }
  .nav a { font-size: 14px; }
}
@media (max-width: 640px) {
  .prose { font-size: 15.5px; }
  .article-lead, .toc, .prose pre { border-radius: 12px; }
}