/* ============================================================
   Gate 独立信息站样式  ·  白帽 SEO
   主题色：青绿（贴近 Gate 视觉，但不使用其 Logo/VI）
   对搜索引擎与用户展示同一份内容，无斗篷、无跳转。
   ============================================================ */

:root {
  --bg: #0d1117;
  --bg-soft: #131a24;
  --bg-card: #161b22;
  --border: #21262d;
  --text: #c9d1d9;
  --text-dim: #8b949e;
  --heading: #e6edf3;
  --accent: #00b894;
  --accent-2: #00d8b0;
  --radius: 14px;
  --maxw: 1080px;
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); line-height: 1.75; background: var(--bg); color: var(--text); -webkit-font-smoothing: antialiased; }
a { color: var(--accent-2); text-decoration: none; transition: color .2s; }
a:hover { color: var(--heading); }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4 { color: var(--heading); line-height: 1.25; font-weight: 700; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

.skip-link { position: absolute; left: -9999px; top: 0; background: var(--accent-2); color: #0d1117; padding: 10px 16px; border-radius: 0 0 8px 0; z-index: 200; }
.skip-link:focus { left: 0; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(13,17,23,.85); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 20px; max-width: var(--maxw); margin: 0 auto; flex-wrap: wrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; color: var(--heading); }
.brand .dot { width: 26px; height: 26px; border-radius: 8px; background: linear-gradient(135deg, var(--accent-2), var(--accent)); display: inline-block; }
.nav-links { display: flex; gap: 8px; flex-wrap: wrap; }
.nav-links a { color: var(--text-dim); font-size: 14px; padding: 8px 14px; border-radius: 8px; transition: background .2s, color .2s; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--heading); background: var(--bg-card); }

.disclaimer-bar { background: #2d1e0a; color: #f0c674; text-align: center; font-size: 13px; padding: 8px 16px; border-bottom: 1px solid #3a2a10; }
.disclaimer-bar a { color: #ffd98a; text-decoration: underline; }

.hero { padding: 72px 0 56px; background: radial-gradient(ellipse at top left, rgba(0,216,176,.12), transparent 55%), radial-gradient(ellipse at bottom right, rgba(0,184,148,.10), transparent 55%); }
.hero h1 { font-size: clamp(28px, 5vw, 46px); letter-spacing: -.5px; margin-bottom: 18px; }
.hero h1 span { color: var(--accent-2); }
.hero p.lead { font-size: 1.1rem; color: var(--text-dim); max-width: 660px; margin-bottom: 28px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-grid { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 44px; }
.hero-content { flex: 1; min-width: 300px; }
.hero-badge { display: inline-block; background: rgba(0,216,176,.14); color: var(--accent-2); font-size: 13px; font-weight: 600; padding: 6px 14px; border-radius: 40px; margin-bottom: 18px; border: 1px solid rgba(0,216,176,.25); }
.hero-stats { flex: 0.85; min-width: 280px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; background: rgba(22,27,34,.6); border: 1px solid var(--border); border-radius: 24px; padding: 26px; }
.stat-item h3 { font-size: 1.9rem; color: var(--accent-2); }
.stat-item p { font-size: .85rem; color: var(--text-dim); }

.btn { display: inline-block; padding: 13px 28px; border-radius: 10px; font-weight: 700; font-size: 15px; transition: transform .2s, box-shadow .2s, background .2s; }
.btn-primary { background: linear-gradient(135deg, var(--accent-2), var(--accent)); color: #0d1117; }
.btn-primary:hover { transform: translateY(-2px); color: #0d1117; box-shadow: 0 10px 28px rgba(0,216,176,.28); }
.btn-ghost { border: 1px solid var(--border); color: var(--heading); }
.btn-ghost:hover { border-color: var(--accent-2); color: var(--accent-2); }

.section { padding: 56px 0; border-top: 1px solid var(--border); }
.section h2 { font-size: clamp(22px, 3.4vw, 30px); margin-bottom: 12px; }
.section .section-sub { color: var(--text-dim); margin-bottom: 32px; max-width: 700px; }

.grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; transition: border-color .3s, transform .2s; }
.card:hover { border-color: rgba(0,216,176,.4); transform: translateY(-3px); }
.card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.card p { color: var(--text-dim); font-size: .95rem; }
.card .card-icon { font-size: 26px; margin-bottom: 12px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius); }
table.compare { width: 100%; border-collapse: collapse; min-width: 560px; }
table.compare th, table.compare td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--border); font-size: .95rem; }
table.compare thead th { background: var(--bg-soft); color: var(--heading); font-size: .9rem; text-transform: uppercase; letter-spacing: .5px; }
table.compare tbody tr:hover td { background: rgba(0,216,176,.04); }
table.compare td:first-child { color: var(--text-dim); font-weight: 600; }
.tag { display: inline-block; font-size: 12px; padding: 3px 10px; border-radius: 20px; background: rgba(0,216,176,.12); color: var(--accent-2); border: 1px solid rgba(0,216,176,.25); }

.steps { counter-reset: step; display: grid; gap: 16px; }
.step { position: relative; padding: 22px 24px 22px 66px; background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); counter-increment: step; }
.step::before { content: counter(step); position: absolute; left: 20px; top: 22px; width: 32px; height: 32px; border-radius: 50%; background: var(--accent-2); color: #0d1117; font-weight: 800; display: flex; align-items: center; justify-content: center; }
.step h4 { margin-bottom: 6px; }
.step p { color: var(--text-dim); font-size: .95rem; }

.faq details { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; margin-bottom: 12px; padding: 4px 20px; }
.faq summary { cursor: pointer; padding: 16px 0; font-weight: 600; color: var(--heading); list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent-2); font-size: 22px; }
.faq details[open] summary::after { content: "−"; }
.faq details p { padding: 0 0 18px; color: var(--text-dim); font-size: .95rem; }

.topic-links { display: flex; flex-wrap: wrap; gap: 10px; }
.topic-links a { font-size: 13px; padding: 8px 16px; border: 1px solid var(--border); border-radius: 8px; color: var(--text-dim); }
.topic-links a:hover { border-color: var(--accent-2); color: var(--accent-2); }

.breadcrumb { font-size: 13px; color: var(--text-dim); padding: 16px 0 0; }
.breadcrumb a { color: var(--text-dim); }
.breadcrumb a:hover { color: var(--accent-2); }

.prose p { margin-bottom: 16px; }
.prose ul, .prose ol { margin: 0 0 16px 22px; }
.prose li { margin-bottom: 8px; color: var(--text); }
.prose h3 { margin: 28px 0 12px; }

.site-footer { border-top: 1px solid var(--border); padding: 48px 0 32px; background: linear-gradient(180deg, var(--bg), #0a0d12); }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 32px; margin-bottom: 32px; }
.footer-grid h4 { font-size: 14px; margin-bottom: 14px; }
.footer-grid a { display: block; color: var(--text-dim); font-size: 13px; margin-bottom: 9px; }
.footer-grid a:hover { color: var(--accent-2); }
.footer-bottom { border-top: 1px solid var(--border); padding-top: 20px; text-align: center; color: #6b7688; font-size: 13px; }
.footer-bottom p { margin-bottom: 6px; }

@media (max-width: 640px) {
  .nav { flex-direction: column; align-items: flex-start; }
  .hero { padding: 48px 0 40px; }
  .section { padding: 40px 0; }
}

/* YJB 独立主题：深紫金色数据终端 */
:root {
  --bg: #120d1c;
  --bg-soft: #1d152b;
  --bg-card: #21172f;
  --border: #39284d;
  --text: #ddd4e8;
  --text-dim: #a99bb9;
  --heading: #fff8df;
  --accent: #d97706;
  --accent-2: #f5c451;
  --radius: 24px;
  --maxw: 1120px;
}
body { background: #120d1c; background-image: linear-gradient(rgba(245,196,81,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(245,196,81,.025) 1px, transparent 1px); background-size: 32px 32px; }
.site-header { background: rgba(18,13,28,.9); border-color: #39284d; }
.brand .dot { width: 30px; border-radius: 50% 50% 8px 50%; background: linear-gradient(135deg, #f8d477, #b45309); transform: rotate(8deg); }
.nav-links a { border: 1px solid transparent; border-radius: 999px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { background: #2a1b3c; border-color: #5a3b78; color: #f8d477; }
.hero { min-height: 560px; display: flex; align-items: center; background: radial-gradient(circle at 80% 30%, rgba(168,85,247,.22), transparent 34%), radial-gradient(circle at 12% 65%, rgba(245,196,81,.12), transparent 35%); }
.hero h1 { font-size: clamp(34px, 6vw, 64px); letter-spacing: -1.5px; }
.hero h1 span { color: #f8d477; }
.hero-badge { background: rgba(245,196,81,.08); border-color: rgba(245,196,81,.35); color: #f8d477; letter-spacing: 1px; }
.hero-stats { background: linear-gradient(145deg, rgba(42,27,60,.9), rgba(25,17,37,.95)); border-color: #5a3b78; border-radius: 32px; transform: rotate(1deg); }
.stat-item h3 { color: #f8d477; }
.btn { border-radius: 999px; }
.btn-primary { background: linear-gradient(135deg, #f8d477, #d97706); color: #211308; }
.btn-primary:hover { color: #211308; box-shadow: 0 10px 30px rgba(245,196,81,.2); }
.section:nth-of-type(even) { background: rgba(33,23,47,.44); }
.card { background: linear-gradient(145deg, #241932, #1a1226); }
.card:hover { border-color: #f5c451; }
.step::before { background: #f5c451; color: #211308; }
.site-footer { background: #09060e; }