/* ============================================================
   新航程官网 · 设计系统（照《前端风格设计方案》V1.2 逐条实现）
   冷静技术型：近黑底 + 品牌蓝 + 琥珀点缀 + 星辰大海星空底纹 + 等宽层级
   铁律：无阴影 / 无图标 / 圆角≤4px；渐变仅限星空技术例外（星云光晕）
  ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --bg:          #08090B;   /* 页面底色：近黑 */
  --bg-2:        #0E1013;   /* 次级底：区块分层 */
  --panel:       #121519;   /* 卡片/面板 */
  --line:        rgba(255,255,255,.09);   /* 细线：网格与分隔 */
  --line-strong: rgba(255,255,255,.18);   /* 强分隔：卡片边框 */
  --text:        #F2F4F7;   /* 主文字（不用纯白） */
  --text-2:      #A8AEB9;   /* 次文字 */
  --text-3:      #6B7280;   /* 弱文字：等宽标签、序号 */
  --blue:        #4A7DFF;   /* 品牌蓝：链接/主按钮/强调线/焦点 */
  --blue-hover:  #7BA0FF;   /* 品牌蓝浅 */
  --amber:       #F5B93B;   /* 琥珀点缀：全站面积 ≤3% */
  --star-nebula:   rgba(74,125,255,.13);    /* 首屏星云光晕（深色） */
  --star-nebula-2: rgba(74,125,255,.055);   /* 环境星云（深色，极淡） */

  --font-sans: "PingFang SC", "Source Han Sans SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-en:   Inter, system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "SF Mono", Consolas, "Liberation Mono", monospace;

  --radius-card: 4px;   /* 卡片 */
  --radius-btn:  3px;   /* 按钮 */
  --radius-tag:  2px;   /* 标签 */

  --wrap: 1200px;
  --read: 720px;        /* 长文行宽上限 */
  --sec-gap: 128px;     /* 区块纵向间距（桌面） */
  --nav-h: 64px;
}

/* 浅色模式：同一套设计语言只换基底（设计规范 §二） */
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #FFFFFF; --bg-2: #F7F8FA; --panel: #FFFFFF;
    --line: rgba(11,13,16,.10); --line-strong: rgba(11,13,16,.20);
    --text: #0B0D10; --text-2: #4B5563; --text-3: #6B7280;
    --blue: #2B5FE0; --blue-hover: #1E4FCC; --amber: #B57A0B;
    --star-nebula: rgba(43,95,254,.07); --star-nebula-2: rgba(43,95,254,.04);
  }
}
:root[data-theme="light"] {
  --bg: #FFFFFF; --bg-2: #F7F8FA; --panel: #FFFFFF;
  --line: rgba(11,13,16,.10); --line-strong: rgba(11,13,16,.20);
  --text: #0B0D10; --text-2: #4B5563; --text-3: #6B7280;
  --blue: #2B5FE0; --blue-hover: #1E4FCC; --amber: #B57A0B;
  --star-nebula: rgba(43,95,254,.07); --star-nebula-2: rgba(43,95,254,.04);
}

/* ---------- 2. 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.8;           /* 中文行高必须比英文松 */
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration: none; }
a:hover { color: var(--blue-hover); }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }
::selection { background: var(--blue); color: #fff; }

/* 焦点态：品牌蓝细边，不发光 */
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }

/* ---------- 3. 星空底纹（纯 CSS 星点 + 星云光晕，不用图片） ---------- */
/* 2026-10-24 江老师拍板：原 72px 细线网格（"格子背景太难看"）整体替换为
   "星辰大海"星空——星点读作空间深度与航程意象，代表新航程的新方向。
   技术例外：星点与星云用 radial-gradient 绘制（画面上是点/光晕，不是渐变风格）。 */

/* 环境星点：1100px 平铺，远/中/近三层景深，白为主 + 一点蓝 + 一颗琥珀航标星 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    /* 远星：1px，暗 */
    radial-gradient(1px 1px at 4% 11%, rgba(255,255,255,.28), transparent),
    radial-gradient(1px 1px at 17% 3%, rgba(255,255,255,.22), transparent),
    radial-gradient(1px 1px at 29% 19%, rgba(255,255,255,.35), transparent),
    radial-gradient(1px 1px at 41% 7%, rgba(255,255,255,.26), transparent),
    radial-gradient(1px 1px at 53% 24%, rgba(255,255,255,.30), transparent),
    radial-gradient(1px 1px at 66% 12%, rgba(255,255,255,.24), transparent),
    radial-gradient(1px 1px at 78% 27%, rgba(255,255,255,.33), transparent),
    radial-gradient(1px 1px at 91% 9%, rgba(255,255,255,.27), transparent),
    radial-gradient(1px 1px at 8% 38%, rgba(255,255,255,.30), transparent),
    radial-gradient(1px 1px at 22% 47%, rgba(255,255,255,.25), transparent),
    radial-gradient(1px 1px at 35% 33%, rgba(255,255,255,.32), transparent),
    radial-gradient(1px 1px at 47% 52%, rgba(255,255,255,.28), transparent),
    radial-gradient(1px 1px at 60% 41%, rgba(255,255,255,.35), transparent),
    radial-gradient(1px 1px at 72% 58%, rgba(255,255,255,.26), transparent),
    radial-gradient(1px 1px at 85% 44%, rgba(255,255,255,.30), transparent),
    radial-gradient(1px 1px at 95% 63%, rgba(255,255,255,.24), transparent),
    radial-gradient(1px 1px at 13% 71%, rgba(255,255,255,.29), transparent),
    radial-gradient(1px 1px at 30% 84%, rgba(255,255,255,.27), transparent),
    radial-gradient(1px 1px at 44% 68%, rgba(255,255,255,.31), transparent),
    radial-gradient(1px 1px at 57% 88%, rgba(255,255,255,.25), transparent),
    radial-gradient(1px 1px at 69% 75%, rgba(255,255,255,.33), transparent),
    radial-gradient(1px 1px at 82% 92%, rgba(255,255,255,.26), transparent),
    radial-gradient(1px 1px at 94% 80%, rgba(255,255,255,.30), transparent),
    /* 中景星：1.5px */
    radial-gradient(1.5px 1.5px at 25% 60%, rgba(255,255,255,.38), transparent),
    radial-gradient(1.5px 1.5px at 63% 66%, rgba(191,211,255,.75), transparent),
    radial-gradient(1.5px 1.5px at 88% 22%, rgba(255,255,255,.50), transparent),
    radial-gradient(1.5px 1.5px at 5% 55%, rgba(255,255,255,.45), transparent),
    radial-gradient(1.5px 1.5px at 38% 95%, rgba(255,255,255,.50), transparent),
    radial-gradient(1.5px 1.5px at 76% 35%, rgba(255,255,255,.40), transparent),
    radial-gradient(1.5px 1.5px at 50% 15%, rgba(255,255,255,.55), transparent),
    /* 近景星：2px，亮 */
    radial-gradient(2px 2px at 19% 26%, rgba(255,255,255,.70), transparent),
    radial-gradient(2px 2px at 71% 48%, rgba(255,255,255,.65), transparent),
    radial-gradient(2px 2px at 33% 74%, rgba(255,255,255,.75), transparent),
    radial-gradient(2px 2px at 90% 57%, rgba(255,255,255,.70), transparent),
    radial-gradient(2px 2px at 60% 90%, rgba(255,255,255,.60), transparent),
    /* 一颗琥珀星：新方向的航标 */
    radial-gradient(1.5px 1.5px at 12% 88%, rgba(245,185,59,.60), transparent);
  background-size: 1100px 1100px;
  background-repeat: repeat;
}
/* 浅色模式：白底不渲染星点，只留极淡蓝晕（见 body::after） */
:root[data-theme="light"] body::before { background-image: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) body::before { background-image: none; }
}

/* 环境星云：视口顶部品牌蓝极淡，fixed 不随滚动 */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: radial-gradient(130% 65% at 50% 0%, var(--star-nebula-2), transparent 70%);
  background-repeat: no-repeat;
}

/* 首屏星空层：两层星点同一 360px 平铺，150s 对角漂移一个单元——无缝循环，"航行"感 */
.starfield {
  position: absolute;
  inset: -360px;
  z-index: 0;
  pointer-events: none;
  background-image:
    /* 主星层：白为主，两点带蓝 */
    radial-gradient(1px 1px at 5% 9%, rgba(255,255,255,.30), transparent),
    radial-gradient(1px 1px at 14% 22%, rgba(255,255,255,.40), transparent),
    radial-gradient(1.5px 1.5px at 23% 6%, rgba(255,255,255,.55), transparent),
    radial-gradient(1px 1px at 31% 31%, rgba(255,255,255,.30), transparent),
    radial-gradient(1px 1px at 39% 15%, rgba(255,255,255,.45), transparent),
    radial-gradient(1.5px 1.5px at 48% 38%, rgba(191,211,255,.72), transparent),
    radial-gradient(1px 1px at 57% 8%, rgba(255,255,255,.35), transparent),
    radial-gradient(1px 1px at 64% 27%, rgba(255,255,255,.50), transparent),
    radial-gradient(1.5px 1.5px at 72% 44%, rgba(255,255,255,.65), transparent),
    radial-gradient(1px 1px at 81% 13%, rgba(255,255,255,.40), transparent),
    radial-gradient(1px 1px at 88% 33%, rgba(255,255,255,.30), transparent),
    radial-gradient(1.5px 1.5px at 95% 52%, rgba(255,255,255,.55), transparent),
    radial-gradient(1px 1px at 9% 48%, rgba(255,255,255,.35), transparent),
    radial-gradient(1.5px 1.5px at 18% 62%, rgba(255,255,255,.60), transparent),
    radial-gradient(1px 1px at 27% 78%, rgba(255,255,255,.40), transparent),
    radial-gradient(1px 1px at 36% 55%, rgba(255,255,255,.30), transparent),
    radial-gradient(1.5px 1.5px at 45% 71%, rgba(255,255,255,.55), transparent),
    radial-gradient(1px 1px at 54% 88%, rgba(255,255,255,.35), transparent),
    radial-gradient(1.5px 1.5px at 63% 63%, rgba(122,160,255,.68), transparent),
    radial-gradient(1px 1px at 71% 81%, rgba(255,255,255,.45), transparent),
    radial-gradient(1px 1px at 80% 68%, rgba(255,255,255,.30), transparent),
    radial-gradient(1.5px 1.5px at 89% 86%, rgba(255,255,255,.60), transparent),
    radial-gradient(1px 1px at 96% 74%, rgba(255,255,255,.40), transparent),
    radial-gradient(1px 1px at 12% 91%, rgba(255,255,255,.30), transparent),
    radial-gradient(1.5px 1.5px at 33% 95%, rgba(255,255,255,.50), transparent),
    /* 亮星层：2px，含一颗琥珀 */
    radial-gradient(2px 2px at 19% 14%, rgba(255,255,255,.85), transparent),
    radial-gradient(2px 2px at 52% 24%, rgba(255,255,255,.70), transparent),
    radial-gradient(2px 2px at 77% 41%, rgba(255,255,255,.80), transparent),
    radial-gradient(2px 2px at 28% 57%, rgba(255,255,255,.75), transparent),
    radial-gradient(2px 2px at 61% 72%, rgba(255,255,255,.85), transparent),
    radial-gradient(2px 2px at 86% 85%, rgba(255,255,255,.70), transparent),
    radial-gradient(1.5px 1.5px at 43% 44%, rgba(245,185,59,.70), transparent);
  background-size: 360px 360px;
  background-repeat: repeat;
  animation: starfield-drift 150s linear infinite;
  will-change: transform;
}
@keyframes starfield-drift {
  from { transform: translate3d(0, 0, 0); }
  to   { transform: translate3d(360px, 360px, 0); }
}
/* 页面切后台：暂停漂移省电 */
.starfield.is-paused { animation-play-state: paused; }
/* 浅色模式：首屏不渲染星点，只留星云光晕 */
:root[data-theme="light"] .starfield { background-image: none; animation: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .starfield { background-image: none; animation: none; }
}

/* 首屏星云光晕：品牌蓝椭圆、静止（渐变仅用于星空光晕——技术例外） */
.nebula {
  position: absolute;
  top: -30%; left: 50%;
  width: 1400px; height: 760px;
  transform: translateX(-50%);
  pointer-events: none;
  z-index: 0;
  background-image: radial-gradient(55% 50% at 50% 50%, var(--star-nebula), transparent 72%);
}

/* 首屏光标柔光（桌面端 560px / 13%，手机禁用） */
.glow {
  position: absolute;
  top: 0; left: 0;
  width: 560px; height: 560px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle, rgba(74,125,255,.13) 0%, rgba(74,125,255,0) 70%);
  transform: translate3d(-50%, -50%, 0);
  opacity: 0;
  transition: opacity .4s;
}
@media (hover: hover) and (pointer: fine) {
  .glow { opacity: 1; }
}
body.phone .glow { display: none; }

/* ---------- 4. 排版（设计规范 §三 字号表） ---------- */
h1, h2, h3 { font-weight: 700; line-height: 1.25; margin: 0; }
h1 { font-size: 56px; line-height: 1.12; letter-spacing: -0.02em; }
h2 { font-size: 36px; }
h3 { font-size: 20px; font-weight: 600; }
p  { margin: 0 0 16px; }
strong { font-weight: 600; color: var(--text); }
em { font-style: normal; color: var(--text-2); }

.mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--text-3);
}
.amber { color: var(--amber); }

/* ---------- 5. 布局 ---------- */
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 32px; position: relative; z-index: 1; }
.read { max-width: var(--read); }
main { position: relative; z-index: 1; }
section { padding: var(--sec-gap) 0; position: relative; }
section + section { padding-top: 0; }

.section-head { margin-bottom: 48px; }
.section-head .mono { display: block; margin-bottom: 12px; }
.section-head h2 { font-size: 36px; }

/* 页面主标题区（非首页） */
.page-hero { padding: 48px 0 64px; }
.page-hero .mono { display: block; margin-bottom: 16px; }
.page-hero h1 { font-size: 48px; }
.page-hero .lead {
  font-size: 18px; color: var(--text-2); margin-top: 16px; max-width: var(--read);
}

/* 面包屑（除首页外全站，BreadcrumbList Schema 配套） */
.crumbs { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; color: var(--text-3); margin-bottom: 24px; }
.crumbs a { color: var(--text-3); }
.crumbs a:hover { color: var(--blue); }
.crumbs .sep { margin: 0 8px; opacity: .5; }

/* ---------- 6. 页头导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: var(--nav-h); }
.brand {
  font-family: var(--font-mono); font-size: 18px; font-weight: 700;
  letter-spacing: .02em; color: var(--text);
}
.brand .dot { color: var(--blue); }
.brand:hover { color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links > a {
  font-size: 15px; color: var(--text-2); position: relative; padding: 4px 0;
}
.nav-links > a:hover, .nav-links > a.active { color: var(--text); }
.nav-links > a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--blue);
}
.nav-toggle {
  display: none; background: none; border: 1px solid var(--line-strong);
  color: var(--text); font-size: 20px; width: 44px; height: 44px;
  border-radius: var(--radius-btn); cursor: pointer;
}
.theme-toggle {
  background: none; border: 1px solid var(--line-strong); color: var(--text-3);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em;
  padding: 6px 10px; border-radius: var(--radius-tag); cursor: pointer;
}
.theme-toggle:hover { color: var(--text); border-color: var(--blue); }

/* ---------- WP 菜单结构（wp_nav_menu 输出 li > a；下拉 .sub-menu，07 号 §2.2）----------
   注意：上方 .nav-links > a 只覆盖降级菜单（裸 a）；真实菜单必须靠下面这套规则。 */
.nav-links li { position: relative; list-style: none; }
.nav-links li > a {
  font-size: 15px; color: var(--text-2); position: relative; padding: 4px 0; display: block;
}
.nav-links li > a:hover,
.nav-links li.current-menu-item > a,
.nav-links li.current-menu-ancestor > a { color: var(--text); }
.nav-links li.current-menu-item > a::after,
.nav-links li.current-menu-ancestor > a::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -2px;
  height: 2px; background: var(--blue);
}
.nav-links .sub-menu {
  position: absolute; top: calc(100% + 10px); left: -16px;
  min-width: 230px; padding: 8px 0;
  background: var(--bg-2); border: 1px solid var(--line); border-radius: var(--radius-btn);
  display: none; flex-direction: column; gap: 0; z-index: 40;
}
.nav-links li:hover > .sub-menu,
.nav-links li:focus-within > .sub-menu { display: flex; }
.nav-links .sub-menu a { font-size: 13.5px; padding: 9px 16px; white-space: nowrap; }
.nav-links .sub-menu a::after { display: none; }

/* 导航 CTA（原型 nav-cta：描边低调按钮，非主按钮）*/
.nav-links a.nav-cta {
  margin-left: auto; font-size: 13.5px; color: var(--text);
  border: 1px solid var(--line-strong); border-radius: var(--radius-btn);
  padding: 7px 15px;
}
.nav-links a.nav-cta:hover { border-color: var(--blue); color: var(--blue); }
.nav-links a.nav-cta::after { display: none; }

/* 移动端抽屉 */
.drawer {
  position: fixed; inset: 0; z-index: 200;
  background: var(--bg);
  transform: translateX(-100%);
  transition: transform .3s;
  padding: 24px 32px;
  overflow-y: auto;
}
.drawer.is-open { transform: translateX(0); }
.drawer[aria-hidden="true"] { visibility: hidden; }
[data-drawer-mask] {
  position: fixed; inset: 0; z-index: 190;
  background: rgba(0,0,0,.5);
  opacity: 0; pointer-events: none;
  transition: opacity .3s;
}
[data-drawer-mask].is-open { opacity: 1; pointer-events: auto; }
.drawer-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 32px; }
.drawer-close { background: none; border: 1px solid var(--line-strong); color: var(--text); width: 44px; height: 44px; border-radius: var(--radius-btn); font-size: 18px; cursor: pointer; }
.drawer a { display: block; font-size: 20px; color: var(--text); padding: 16px 0; border-bottom: 1px solid var(--line); }
.drawer a:hover { color: var(--blue); }
.drawer .sub-menu { margin: 0; padding: 0; list-style: none; }
.drawer .sub-menu a { font-size: 15px; color: var(--text-2); padding: 12px 0 12px 24px; }
.drawer .cta-in-drawer { margin-top: 32px; }
body.drawer-open { overflow: hidden; }

/* ---------- 7. 按钮（设计规范 §四） ---------- */
.btn {
  display: inline-block; font-size: 15px; line-height: 1.5;
  padding: 12px 24px; border-radius: var(--radius-btn);
  min-height: 44px; display: inline-flex; align-items: center;
}
.btn-primary { background: var(--blue); color: #fff; border: 1px solid var(--blue); }
.btn-primary:hover { background: var(--blue-hover); border-color: var(--blue-hover); color: #fff; }
.btn-ghost { color: var(--text); border-bottom: 1px solid var(--line-strong); padding: 4px 0; border-radius: 0; }
.btn-ghost:hover { color: var(--blue); border-bottom-color: var(--blue); }

.link-arrow { font-size: 15px; color: var(--blue); }
.link-arrow::after { content: " →"; }
.link-arrow:hover { color: var(--blue-hover); }

/* ---------- 8. 首页区块 ---------- */
/* 8.1 Hero（2026-10-24 江老师拍板：导航与首屏内容间距收紧约 1.5 网格单元） */
.hero { padding: 48px 0 var(--sec-gap); overflow: hidden; }
.hero .est { display: block; margin-bottom: 24px; }
.hero h1 { max-width: 900px; }
.hero .sub { font-size: 18px; color: var(--text-2); margin: 24px 0 40px; max-width: var(--read); }
.hero .actions { display: flex; align-items: center; gap: 32px; flex-wrap: wrap; }

/* 8.2 三大服务卡 */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--panel); border: 1px solid var(--line-strong);
  border-radius: var(--radius-card); padding: 32px;
  transition: transform .2s, border-color .2s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-2px); border-color: var(--blue); }
.card .num {
  font-family: var(--font-mono); font-size: 28px; font-weight: 700;
  color: var(--amber); display: block; margin-bottom: 16px;  /* 琥珀仅此处与关键数字 */
}
.card h3 { margin-bottom: 12px; }
.card p { color: var(--text-2); font-size: 15px; }
.card ul { margin: 16px 0 24px; }
.card li { font-size: 15px; color: var(--text-2); padding: 8px 0 8px 20px; position: relative; }
.card li::before {
  content: ""; position: absolute; left: 0; top: 18px;
  width: 8px; height: 1px; background: var(--blue);
}
.card .link-arrow { margin-top: auto; }

/* 8.3 为什么是新航程（一行一条，细线分隔，不用卡片） */
.why-row {
  display: grid; grid-template-columns: 80px 1fr; gap: 24px;
  padding: 32px 0; border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.why-row .idx { font-family: var(--font-mono); font-size: 14px; color: var(--amber); letter-spacing: .08em; }
.why-row h3 { margin-bottom: 8px; }
.why-row p { color: var(--text-2); margin: 0; font-size: 15px; }

/* 8.4 趋势阶段带 */
.stage-band { display: flex; margin: 40px 0 32px; border: 1px solid var(--line-strong); border-radius: var(--radius-card); overflow: hidden; }
.stage {
  flex: 1; text-align: center; padding: 16px 8px;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .04em; color: var(--text-2);
  border-right: 1px solid var(--line);
}
.stage:last-child { border-right: none; }

/* 8.5 方法论一瞥：四化模型横向链路（全站视觉重心） */
.chain { display: flex; align-items: stretch; gap: 16px; margin: 48px 0 32px; }
.chain .node {
  flex: 1; position: relative;
  border: 1px solid var(--blue); border-radius: var(--radius-card);
  background: transparent;
  padding: 24px 16px 20px; text-align: center;
  overflow: hidden;
}
.chain .node .label { font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em; color: var(--text-3); display: block; margin-bottom: 8px; }
.chain .node .name { font-size: 17px; font-weight: 600; }
/* 四化模型流动线：方框顶部 2px 线 + 光点 2.8s，错峰 0.7s（内容驱动动效） */
.chain .node .flow {
  position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: var(--line);
  overflow: hidden;
}
.chain .node .flow::after {
  content: ""; position: absolute; top: 0; left: -40%;
  width: 40%; height: 100%;
  background: linear-gradient(to right, transparent, var(--blue), transparent);
  animation: flow-dot 2.8s ease-in-out infinite;
}
.chain .node:nth-child(3) .flow::after { animation-delay: .7s; }
.chain .node:nth-child(5) .flow::after { animation-delay: 1.4s; }
.chain .node:nth-child(7) .flow::after { animation-delay: 2.1s; }
@keyframes flow-dot {
  0%   { left: -40%; }
  100% { left: 100%; }
}
.chain .arrow { align-self: center; color: var(--text-3); font-size: 20px; }

/* 8.6 实体描述块 */
.entity {
  border-left: 2px solid var(--blue);
  padding: 24px 32px; background: var(--bg-2);
  font-size: 16px; color: var(--text-2);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
}
.entity .link-arrow { display: inline-block; margin-top: 12px; }

/* 8.7 最新洞察列表 */
.insight-list li {
  display: grid; grid-template-columns: 48px 1fr 24px; gap: 16px;
  align-items: center; padding: 20px 0; border-bottom: 1px solid var(--line);
}
.insight-list .idx { font-family: var(--font-mono); color: var(--amber); font-size: 13px; letter-spacing: .08em; }
.insight-list .t { font-size: 16px; color: var(--text); }
.insight-list .t:hover { color: var(--blue); }
.insight-list .arrow { color: var(--text-3); text-align: right; }

/* 8.8 底部 CTA */
.cta { border-top: 1px solid var(--line); }
.cta h2 { margin-bottom: 16px; }
.cta p { color: var(--text-2); margin-bottom: 32px; max-width: var(--read); }

/* ---------- 9. 服务页组件 ---------- */
/* 五步流程条（FDE） */
.step-flow {
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px;
  border: 1px solid var(--line-strong); border-radius: var(--radius-card);
  padding: 20px 24px; margin: 24px 0 32px; background: var(--bg-2);
}
.step-flow span { font-size: 15px; }
.step-flow .arr { color: var(--blue); font-family: var(--font-mono); }

/* 编号卡（GEO 01-04 / 培训 01-04） */
.num-card {
  position: relative;
  border: 1px solid var(--line-strong); border-radius: var(--radius-card);
  background: var(--panel); padding: 28px 28px 24px 80px;
  margin: 0 0 20px;
}
.num-card .num {
  position: absolute; left: 28px; top: 28px;
  font-family: var(--font-mono); font-size: 24px; font-weight: 700; color: var(--amber);
}
.num-card h3 { margin-bottom: 12px; }
.num-card p { color: var(--text-2); font-size: 15px; margin: 0; }
.num-card ul { margin-top: 12px; }
.num-card li { font-size: 15px; color: var(--text-2); padding: 6px 0 6px 20px; position: relative; }
.num-card li::before { content: ""; position: absolute; left: 0; top: 18px; width: 8px; height: 1px; background: var(--blue); }

/* FAQ 组件 */
.faq-item { border-bottom: 1px solid var(--line); padding: 24px 0; }
.faq-item h3 { font-size: 17px; margin-bottom: 12px; }
.faq-item p { color: var(--text-2); margin: 0; }

/* 页面正文通用（服务页/关于页/隐私页） */
.page-body { padding-top: 0; }
.prose h2 { font-size: 28px; margin: 56px 0 24px; padding-top: 32px; border-top: 1px solid var(--line); }
/* H1 后紧跟的 H2 视为副题（GEO/培训页） */
.prose > h1 + h2 {
  font-size: 20px; font-weight: 500; color: var(--text-2);
  border: none; padding: 0; margin: 16px 0 48px;
}
.prose h3 { font-size: 18px; margin: 32px 0 12px; }
.prose p { color: var(--text-2); }
.prose strong { color: var(--text); }
.prose ul { margin: 0 0 24px; }
.prose li { padding: 8px 0 8px 24px; position: relative; color: var(--text-2); }
.prose li::before { content: ""; position: absolute; left: 4px; top: 20px; width: 8px; height: 1px; background: var(--blue); }
.prose .small, .prose em { font-size: 14px; }

/* 内容中的 CTA 行（导入脚本生成） */
.cta-line { margin: 24px 0 8px; }
.cta-line .btn { min-height: 44px; }

/* 聚合页频道入口卡（导入脚本生成，两个卡片并排） */
.prose .channel-entry { display: inline-grid; width: calc(50% - 12px); margin: 0 12px 16px 0; vertical-align: top; }
.prose .channel-entry .entry {
  border: 1px solid var(--line-strong); border-radius: var(--radius-card);
  background: var(--panel); padding: 24px;
}
.prose .channel-entry .entry h3 { font-size: 17px; margin: 0 0 8px; }
.prose .channel-entry .entry p { font-size: 14px; color: var(--text-2); margin: 0 0 12px; }

/* 文章 meta（single + 频道页通用） */
.article-meta { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; color: var(--text-3); }

/* 企业信息表（导入脚本 info-table） */
.info-table { width: 100%; border-collapse: collapse; margin: 24px 0 32px; }
.info-table th, .info-table td {
  text-align: left; padding: 14px 20px; border: 1px solid var(--line-strong); font-size: 15px;
}
.info-table th { background: var(--bg-2); color: var(--text-3); font-weight: 500; width: 200px; font-family: var(--font-mono); font-size: 13px; letter-spacing: .04em; }
.info-table td { color: var(--text-2); }

/* ---------- 10. 联系页 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-qr { margin: 24px 0; }
.contact-qr img { border: 1px solid var(--line-strong); border-radius: var(--radius-card); }
.contact-qr .contact-qr-label { display: block; font-family: var(--font-mono); font-size: 12px; color: var(--text-3); letter-spacing: .08em; margin-top: 12px; }
.contact-email { font-size: 17px; margin: 8px 0 24px; }
.contact-email .mono { display: block; margin-bottom: 4px; }

/* 表单（设计规范 §五.7：直角微圆角 + 1px 边框 + 面板底，聚焦转蓝不发光） */
.lead-form { display: grid; gap: 20px; }
.lead-form label { display: block; font-size: 14px; color: var(--text-2); margin-bottom: 8px; }
.lead-form label .req { color: var(--amber); font-family: var(--font-mono); font-size: 11px; margin-left: 4px; }
.lead-form input[type="text"], .lead-form input[type="tel"], .lead-form textarea, .lead-form select {
  width: 100%; background: var(--panel); border: 1px solid var(--line-strong);
  border-radius: var(--radius-btn); color: var(--text);
  font-family: var(--font-sans); font-size: 16px; line-height: 1.6;
  padding: 12px 16px; min-height: 44px;
}
.lead-form textarea { min-height: 120px; resize: vertical; }
.lead-form input:focus, .lead-form textarea:focus, .lead-form select:focus { border-color: var(--blue); outline: none; }
.lead-form .hp { position: absolute; left: -9999px; }
.form-note { font-size: 13px; color: var(--text-3); margin-top: 8px; }
.form-result { padding: 16px 20px; border: 1px solid var(--blue); border-radius: var(--radius-card); background: var(--bg-2); font-size: 15px; display: none; }
.form-result.is-ok { display: block; }
.form-result.is-err { display: block; border-color: var(--amber); }

/* 移动端点选题（07 号 §7.3.1） */
.opt-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 8px; }
.opt-chips label {
  border: 1px solid var(--line-strong); border-radius: var(--radius-tag);
  padding: 8px 14px; font-size: 14px; color: var(--text-2); cursor: pointer;
  min-height: 44px; display: inline-flex; align-items: center; margin: 0;
}
.opt-chips input { position: absolute; opacity: 0; }
.opt-chips label:has(input:checked) { border-color: var(--blue); color: var(--blue); }

/* ---------- 11. 频道页 / 聚合页 / 文章页 ---------- */
.channel-trust {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .06em; color: var(--text-3);
  border: 1px solid var(--line); border-radius: var(--radius-tag);
  padding: 10px 16px; display: inline-block; margin: 16px 0 32px;
}
.post-list li {
  display: grid; grid-template-columns: 48px 1fr 24px; gap: 16px; align-items: center;
  padding: 20px 0; border-bottom: 1px solid var(--line);
}
.post-list .idx { font-family: var(--font-mono); color: var(--amber); font-size: 13px; }
.post-list .t { font-size: 16px; color: var(--text); }
.post-list .t:hover { color: var(--blue); }
.post-list .arrow { color: var(--text-3); text-align: right; }
.post-list .meta { font-size: 13px; color: var(--text-3); margin-top: 4px; display: block; }

.filter-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 24px 0 48px; }
.filter-row .chip {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .04em;
  border: 1px solid var(--line-strong); border-radius: var(--radius-tag);
  padding: 8px 16px; color: var(--text-2);
}
.filter-row .chip:hover { border-color: var(--blue); color: var(--blue); }

.insight-group { margin-bottom: 48px; }
.insight-group h3 {
  font-family: var(--font-mono); font-size: 14px; letter-spacing: .08em;
  color: var(--amber); margin-bottom: 8px; font-weight: 500;
}

.channel-entry {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px;
}
.channel-entry .entry {
  border: 1px solid var(--line-strong); border-radius: var(--radius-card);
  background: var(--panel); padding: 28px;
}
.channel-entry .entry h3 { font-size: 18px; margin-bottom: 8px; }
.channel-entry .entry p { color: var(--text-2); font-size: 14px; margin-bottom: 16px; }

.single-article { max-width: var(--read); }
.single-article .article-meta { font-family: var(--font-mono); font-size: 12px; color: var(--text-3); letter-spacing: .08em; margin: 16px 0 48px; }
.single-article .article-tags { margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 13px; color: var(--text-3); }
.single-article .article-tags span { margin-right: 16px; }

/* ---------- 12. 404 ---------- */
.page-404 { padding: calc(var(--nav-h) + 96px) 0 var(--sec-gap); }
.page-404 h1 { font-size: 56px; margin-bottom: 24px; }
.page-404 .lead { font-size: 17px; color: var(--text-2); max-width: var(--read); margin-bottom: 48px; }
.page-404 .dest { margin: 32px 0; }
.page-404 .dest li {
  display: grid; grid-template-columns: 160px 1fr; gap: 24px;
  padding: 20px 0; border-bottom: 1px solid var(--line); align-items: baseline;
}
.page-404 .dest .d { font-size: 17px; font-weight: 600; }
.page-404 .dest .d a { color: var(--text); }
.page-404 .dest .d a:hover { color: var(--blue); }
.page-404 .dest .desc { color: var(--text-2); font-size: 15px; }
.page-404 .signoff { margin-top: 48px; font-family: var(--font-mono); font-size: 14px; color: var(--text-3); letter-spacing: .08em; }

/* ---------- 13. 页脚 ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-2); position: relative; z-index: 1; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding: 64px 0 48px; }
.footer-grid h3 { font-family: var(--font-mono); font-size: 12px; letter-spacing: .08em; color: var(--text-3); font-weight: 500; margin: 0 0 16px; }
.footer-grid ul li { margin-bottom: 12px; }
.footer-grid ul a { font-size: 14px; color: var(--text-2); }
.footer-grid ul a:hover { color: var(--blue); }
.entity-mini { font-size: 13px; color: var(--text-3); line-height: 1.8; max-width: 420px; }
.footer-contact { display: flex; gap: 32px; align-items: flex-start; margin-top: 20px; }
.footer-contact .qr { width: 120px; }
.footer-contact .qr img { border: 1px solid var(--line-strong); border-radius: var(--radius-card); }
.footer-contact .qr-note { font-family: var(--font-mono); font-size: 11px; color: var(--text-3); letter-spacing: .08em; margin-top: 8px; text-align: center; }
.footer-contact .mono { display: block; margin-bottom: 4px; }
.footer-bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px;
  padding: 24px 0 32px; border-top: 1px solid var(--line);
  font-family: var(--font-mono); font-size: 12px; color: var(--text-3); letter-spacing: .04em;
}
.footer-bottom a { color: var(--text-3); }
.footer-bottom a:hover { color: var(--blue); }
/* 备案号：主页底部中央位置 + 链工信部系统（《非经营性互联网信息服务备案管理办法》第十二条） */
.footer-icp {
  padding: 0 0 32px; text-align: center;
  font-family: var(--font-mono); font-size: 12px; color: var(--text-3); letter-spacing: .04em;
}
.footer-icp a { color: var(--text-3); }
.footer-icp a:hover { color: var(--blue); }

/* ---------- 14. 吸底 CTA（移动端常驻） ---------- */
.sticky-cta { display: none; }
@media (max-width: 767px) {
  .sticky-cta {
    display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 90;
    background: color-mix(in srgb, var(--bg) 92%, transparent);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--line);
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
  }
  .sticky-cta .btn { width: 100%; justify-content: center; }
  body { padding-bottom: 76px; }
}

/* ---------- 15. 滚动揭示（只播一次，JS 加 .reveal-in） ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity .55s ease, transform .55s ease; }
.reveal.reveal-in { opacity: 1; transform: none; }
.no-js .reveal, .no-anim .reveal { opacity: 1; transform: none; }

/* ---------- 16. 响应式（07 号 §7.3：两断点） ---------- */
@media (max-width: 767px) {
  :root { --sec-gap: 72px; }
  .wrap { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  h1 { font-size: 34px; }
  h2 { font-size: 26px; }
  .page-hero h1 { font-size: 34px; }
  .page-hero { padding: 32px 0 48px; }
  .section-head h2 { font-size: 26px; }
  .cards { grid-template-columns: 1fr; }
  .chain { flex-direction: column; gap: 12px; }
  .chain .arrow { transform: rotate(90deg); text-align: center; }
  .stage-band { flex-direction: column; }
  .stage { border-right: none; border-bottom: 1px solid var(--line); }
  .stage:last-child { border-bottom: none; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .channel-entry { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 0 32px; }
  .why-row { grid-template-columns: 1fr; gap: 8px; }
  .insight-list li { grid-template-columns: 32px 1fr 20px; }
  .post-list li { grid-template-columns: 32px 1fr 20px; }
  .page-404 .dest li { grid-template-columns: 1fr; gap: 4px; }
  .step-flow { flex-direction: column; align-items: flex-start; }
  .step-flow .arr { transform: rotate(90deg); }
  .info-table th { width: 120px; }
  .num-card { padding-left: 28px; }
  .num-card .num { position: static; display: block; margin-bottom: 8px; }
  .glow { display: none; }
}

/* ---------- 17. 动效三重关闭 ---------- */
/* 路径 1：系统「减弱动态效果」 */
@media (prefers-reduced-motion: reduce) {
  .starfield, .chain .node .flow::after { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
}
/* 路径 2：手动开关（html.no-anim，JS 切） */
.no-anim .starfield, .no-anim .chain .node .flow::after { animation: none; }
.no-anim .reveal { opacity: 1; transform: none; transition: none; }
.no-anim .card:hover { transform: none; }
/* 路径 3：无 IntersectionObserver 的 .no-js 类（header.php 根元素加，JS 移除） */