/* 文殊官网 · 全局样式 */
:root {
  --bg: #0a1120;
  --bg-soft: #0e1830;
  --card: #131f38;
  --card-2: #16233f;
  --border: #223457;
  --text: #e6edf7;
  --text-dim: #9db0cc;
  --accent: #4f8ef7;
  --accent-2: #34d3c2;
  --accent-3: #f2b04a;
  --radius: 18px;
  --shadow: 0 12px 44px rgba(2, 8, 24, .45);
  --maxw: 1120px;
  --nav-h: 64px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 背景光晕 */
.bg-glow {
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(600px 340px at 12% -4%, rgba(79, 142, 247, .16), transparent 65%),
    radial-gradient(560px 320px at 88% 6%, rgba(52, 211, 194, .10), transparent 65%),
    radial-gradient(700px 420px at 50% 110%, rgba(242, 176, 74, .07), transparent 65%);
}

/* 顶部导航 */
.nav {
  position: sticky; top: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 24px;
  background: rgba(10, 17, 32, .78);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(34, 52, 87, .55);
}
.nav .brand {
  display: flex; align-items: center; gap: 10px;
  font-size: 18px; font-weight: 700; color: var(--text);
}
.brand .logo {
  width: 30px; height: 30px; border-radius: 9px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06121f; font-weight: 800; font-size: 16px;
}
.nav .links { display: flex; align-items: center; gap: 4px; }
.nav .links a {
  color: var(--text-dim); font-size: 14.5px;
  padding: 7px 12px; border-radius: 9px; transition: .2s;
}
.nav .links a:hover { color: var(--text); background: rgba(79, 142, 247, .12); text-decoration: none; }
.nav .links a.active { color: var(--accent); font-weight: 600; }
.nav .burger { display: none; background: none; border: 0; color: var(--text); font-size: 24px; cursor: pointer; }

/* 布局容器 */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
section { padding: 72px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 44px; }
.section-head h2 { font-size: 32px; font-weight: 800; letter-spacing: .5px; }
.section-head .lead { color: var(--text-dim); margin-top: 14px; font-size: 16.5px; }

/* Hero */
.hero {
  padding: 96px 0 72px; text-align: center;
  background: linear-gradient(180deg, rgba(79,142,247,.10), transparent 55%);
}
.hero .tag {
  display: inline-block; font-size: 13px; letter-spacing: 2px; color: var(--accent-2);
  border: 1px solid rgba(52,211,194,.35); border-radius: 999px; padding: 5px 16px; margin-bottom: 26px;
  background: rgba(52,211,194,.07);
}
.hero h1 {
  font-size: clamp(30px, 5.4vw, 52px); font-weight: 850; line-height: 1.28;
  background: linear-gradient(120deg, #f4f8ff 20%, var(--accent) 55%, var(--accent-2) 90%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  max-width: 820px; margin: 0 auto;
}
.hero .sub { color: var(--text-dim); font-size: 17.5px; max-width: 720px; margin: 26px auto 0; }
.hero .cta { margin-top: 38px; display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 30px; border-radius: 12px; font-size: 15.5px; font-weight: 600;
  transition: .2s; border: 1px solid transparent; cursor: pointer;
}
.btn.primary { background: linear-gradient(135deg, var(--accent), #3d6fe0); color: #fff; box-shadow: 0 8px 26px rgba(79,142,247,.32); }
.btn.primary:hover { transform: translateY(-2px); box-shadow: 0 12px 34px rgba(79,142,247,.45); text-decoration: none; }
.btn.ghost { border-color: var(--border); color: var(--text); background: rgba(255,255,255,.03); }
.btn.ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); text-decoration: none; }

/* 卡片网格 */
.grid { display: grid; gap: 22px; }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: linear-gradient(180deg, var(--card-2), var(--card));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 28px; transition: .25s; position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-5px); border-color: rgba(79,142,247,.6); box-shadow: var(--shadow); }
.card .icon {
  width: 46px; height: 46px; border-radius: 13px; display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
  background: rgba(79,142,247,.14); border: 1px solid rgba(79,142,247,.28);
}
.card h3 { font-size: 18.5px; font-weight: 700; margin-bottom: 10px; }
.card p { color: var(--text-dim); font-size: 14.8px; }
.card .num {
  position: absolute; top: 14px; right: 18px; font-size: 40px; font-weight: 850;
  color: rgba(79,142,247,.10); line-height: 1;
}

/* 引语区 */
.quote {
  background: linear-gradient(180deg, rgba(52,211,194,.07), transparent);
  border-top: 1px solid rgba(52,211,194,.2); border-bottom: 1px solid rgba(52,211,194,.2);
  text-align: center; padding: 64px 24px;
}
.quote blockquote {
  font-size: clamp(20px, 3vw, 27px); font-weight: 650; line-height: 1.65; color: #d9ecf5;
  max-width: 820px; margin: 0 auto;
}
.quote blockquote::before { content: "“"; display: block; font-size: 54px; color: var(--accent-2); line-height: .6; margin-bottom: 18px; }
.quote .from { margin-top: 20px; color: var(--text-dim); font-size: 14px; letter-spacing: 1px; }

/* 内页页头 */
.page-head { padding: 72px 0 16px; }
.page-head h1 { font-size: clamp(30px, 4.6vw, 44px); font-weight: 850; }
.page-head .lead { color: var(--text-dim); font-size: 17px; margin-top: 14px; max-width: 760px; }

/* 文本区 */
.text-block { color: var(--text-dim); font-size: 16px; }
.text-block strong { color: var(--text); }
.block-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px 32px; margin-bottom: 22px; }
.block-card h3 { color: var(--text); font-size: 20px; margin-bottom: 12px; }
.block-card p { color: var(--text-dim); }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.tag { font-size: 12.5px; padding: 4px 12px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-dim); background: rgba(255,255,255,.02); }

/* 列表 */
ul.clean { list-style: none; }
ul.clean li { position: relative; padding-left: 26px; margin: 9px 0; color: var(--text-dim); }
ul.clean li::before {
  content: ""; position: absolute; left: 4px; top: 11px;
  width: 9px; height: 9px; border-radius: 3px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

/* 页脚 */
.footer { border-top: 1px solid var(--border); padding: 40px 0 56px; margin-top: 40px; }
.footer .inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
.footer .copy { color: var(--text-dim); font-size: 13.5px; }
.footer .links a { margin-left: 18px; font-size: 13.5px; color: var(--text-dim); }
.footer .links a:hover { color: var(--accent); text-decoration: none; }

/* 响应式 */
@media (max-width: 900px) {
  .g3, .g4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .nav .links {
    display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: rgba(10,17,32,.96); border-bottom: 1px solid var(--border); padding: 12px 16px 18px;
  }
  .nav .links.open { display: flex; }
  .nav .links a { padding: 12px 14px; font-size: 16px; }
  .nav .burger { display: block; }
  section { padding: 52px 0; }
  .hero { padding: 68px 0 52px; }
}

/* 使用说明页 */
.doc-hero { padding: 64px 0 10px; }
.doc-toc {
  display: flex; flex-wrap: wrap; gap: 8px; margin: 26px 0 40px;
  padding: 16px 18px; background: rgba(79,142,247,.06);
  border: 1px solid var(--border); border-radius: 14px;
}
.doc-toc a { font-size: 13.5px; padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border); color: var(--text-dim); }
.doc-toc a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }
.block-card h3 { display: flex; align-items: center; gap: 10px; }
.block-card h3 .no {
  width: 26px; height: 26px; border-radius: 8px; flex: none;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #06121f; font-size: 14px; font-weight: 800;
}
table.doc { width: 100%; border-collapse: collapse; font-size: 14px; margin: 14px 0 6px; }
table.doc th, table.doc td { text-align: left; padding: 10px 14px; border: 1px solid var(--border); }
table.doc th { background: rgba(79,142,247,.12); color: var(--text); font-weight: 600; white-space: nowrap; }
table.doc td { color: var(--text-dim); vertical-align: top; }
table.doc td code { white-space: nowrap; }
code.inline {
  background: rgba(79,142,247,.12); color: #9cc4ff;
  padding: 2px 7px; border-radius: 6px; font-size: 13px;
  font-family: ui-monospace, SFMono-Regular, Consolas, "JetBrains Mono", monospace;
}
pre.code {
  background: #0b1426; border: 1px solid var(--border); border-radius: 12px;
  padding: 16px 18px; overflow-x: auto; margin: 14px 0 4px;
  font-family: ui-monospace, SFMono-Regular, Consolas, "JetBrains Mono", monospace;
  font-size: 13.5px; line-height: 1.7; color: #c9e2ff;
}
pre.code .cm { color: #5f7aa6; }
pre.code .ok { color: #34d3c2; }
.note {
  border-left: 3px solid var(--accent-3); background: rgba(242,176,74,.07);
  padding: 12px 16px; border-radius: 0 10px 10px 0; margin: 14px 0 4px; font-size: 14px; color: var(--text-dim);
}
.note strong { color: var(--text); }
@media (max-width: 640px) {
  table.doc { font-size: 13px; }
  table.doc th, table.doc td { padding: 8px 10px; }
}