/* ============================================================
   凌云创想官网 v2.0 · 全站样式(单文件,CSS 变量统一管理)
   基调:简洁明亮 · 高端留白 · 深黑偏酷(#0A2540)
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --c-primary: #0A2540;        /* 主色:标题 / Hero 背景 / 主 CTA */
  --c-primary-deep: #04182F;   /* 主色深:Hover / 强调 */
  --c-text: #3F4A5C;           /* 辅助灰蓝:正文 / 描边 / 次级标题 */
  --c-bg: #FFFFFF;             /* 背景主 */
  --c-bg-alt: #F8FAFD;         /* 背景次:区块底 / 卡片底 */
  --c-accent: #2E5BFF;         /* 点缀蓝:业务图标 / 二级 CTA */
  --c-green: #00D4A1;          /* 点缀绿:数据高亮 / 关键数字 */
  --c-muted: #9CB1C7;          /* 中性灰:副标语 / 浅色文字 */
  --c-danger: #E54B4B;         /* 警示:错误状态 */
  --c-border: #E5E9F0;         /* 卡片描边 */
  --c-on-dark: #F4F8FD;        /* 深底上的浅文字 */

  --font-zh: -apple-system, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  --font-en: "Inter", -apple-system, "Helvetica Neue", Arial, sans-serif;

  --radius: 12px;
  --radius-lg: 16px;
  --shadow-card: 0 8px 24px rgba(10, 37, 64, 0.06);
  --shadow-lift: 0 14px 32px rgba(10, 37, 64, 0.12);
  --header-h: 76px;
  --container: 1200px;
}

/* ---------- Reset / 基础 ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-zh);
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { max-width: 100%; height: auto; vertical-align: middle; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--c-accent); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; color: var(--c-primary); font-weight: 600; line-height: 1.35; }
p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 3px; border-radius: 2px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 200;
  padding: 10px 18px; background: var(--c-primary); color: #fff;
}
.skip-link:focus { left: 12px; top: 12px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 32px; }

/* 图标统一规格(线性 2px 描边) */
.promise-item svg, .footer-list svg, .contact-card svg,
.biz-icon svg, .feature-icon svg, .why-item svg, .cta-action svg,
.branch-row svg, .qr-item svg, .commit-item svg { width: 20px; height: 20px; flex: none; }

/* ---------- 按钮体系 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 30px; border-radius: var(--radius);
  font-size: 15px; font-weight: 500; letter-spacing: .02em;
  border: 1px solid transparent; cursor: pointer;
  transition: background-color .2s ease, color .2s ease, border-color .2s ease,
              transform .2s ease, box-shadow .2s ease;
}
.btn svg { width: 18px; height: 18px; }
.btn-white     { background: #fff; color: var(--c-primary); }
.btn-white:hover { background: #EDF3FC; color: var(--c-primary-deep); transform: translateY(-2px); }
.btn-outline-light { border-color: rgba(255,255,255,.45); color: #fff; background: transparent; }
.btn-outline-light:hover { border-color: #fff; background: rgba(255,255,255,.08); color: #fff; transform: translateY(-2px); }
.btn-primary   { background: var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-deep); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-lift); }
.btn-accent    { background: var(--c-accent); color: #fff; }
.btn-accent:hover { background: #1F49E0; color: #fff; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(46,91,255,.28); }
.btn-sm { padding: 9px 22px; font-size: 14px; }
.link-more {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 14px; font-weight: 500; color: var(--c-accent);
}
.link-more svg { width: 16px; height: 16px; transition: transform .2s ease; }
.link-more:hover svg { transform: translateX(4px); }

/* ---------- 区块骨架 ---------- */
.section { padding: 96px 0; }
.section-alt { background: var(--c-bg-alt); }
.section-dark { background: var(--c-primary); color: var(--c-muted); }
.section-dark h2, .section-dark h3 { color: #fff; }

.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.section-head-left { margin: 0 0 44px; text-align: left; }
.eyebrow {
  display: inline-block; margin-bottom: 14px; padding: 5px 14px;
  border: 1px solid var(--c-border); border-radius: 999px;
  font-size: 12.5px; font-weight: 500; letter-spacing: .12em;
  color: var(--c-accent); background: #fff;
}
.section-dark .eyebrow { color: var(--c-green); border-color: rgba(156,177,199,.3); background: transparent; }
.section-title { font-size: 30px; margin-bottom: 14px; letter-spacing: .01em; }
.section-sub { font-size: 15.5px; color: var(--c-muted); margin: 0; }
.section-dark .section-sub { color: var(--c-muted); }

/* ---------- 页头导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .92);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.site-header.scrolled { border-bottom-color: var(--c-border); box-shadow: 0 1px 0 rgba(10,37,64,.04), 0 6px 18px rgba(10,37,64,.05); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }
.brand { display: inline-flex; align-items: center; flex: none; }
.brand-logo { width: 176px; }

.site-nav-wrap { display: flex; align-items: center; gap: 28px; }
.nav-list { display: flex; align-items: center; gap: 8px; }
.nav-item { position: relative; }
.nav-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 10px 16px; border-radius: 10px;
  font-size: 15px; font-weight: 500; color: var(--c-text);
}
.nav-link:hover { color: var(--c-primary); background: #F1F5FB; }
.nav-item.current > .nav-link { color: var(--c-primary); font-weight: 600; }
.nav-item.current > .nav-link::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; border-radius: 2px; background: var(--c-accent);
}
.nav-caret {
  width: 8px; height: 8px; flex: none;
  border-right: 1.6px solid currentColor; border-bottom: 1.6px solid currentColor;
  transform: rotate(45deg) translateY(-1px); opacity: .55;
  transition: transform .2s ease;
}
.nav-item.has-drop:hover .nav-caret { transform: rotate(225deg) translateY(-1px); }

/* 二级下拉(桌面 hover 展开) */
.nav-drop {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 188px;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  box-shadow: var(--shadow-lift); padding: 8px;
  opacity: 0; visibility: hidden; transform: translateY(8px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.nav-item.has-drop:hover .nav-drop,
.nav-item.has-drop:focus-within .nav-drop { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-drop a {
  display: block; padding: 9px 14px; border-radius: 8px;
  font-size: 14px; color: var(--c-text); white-space: nowrap;
}
.nav-drop a:hover { background: #F1F5FB; color: var(--c-primary); }

.nav-link-lang {
  padding: 7px 15px; border: 1px solid var(--c-border); border-radius: 999px;
  font-size: 13px; font-weight: 600; letter-spacing: .04em; color: var(--c-primary);
}
.nav-link-lang:hover { border-color: var(--c-accent); color: var(--c-accent); background: #fff; }
.header-cta { flex: none; }

/* 汉堡按钮(<992px 显示) */
.nav-toggle { display: none; width: 44px; height: 44px; flex: none; position: relative; }
.nav-toggle-bar {
  position: absolute; left: 10px; width: 24px; height: 2px; border-radius: 2px;
  background: var(--c-primary); transition: transform .25s ease, opacity .2s ease, top .25s ease;
}
.nav-toggle-bar:nth-child(1) { top: 15px; }
.nav-toggle-bar:nth-child(2) { top: 21px; }
.nav-toggle-bar:nth-child(3) { top: 27px; }
body.nav-open .nav-toggle-bar:nth-child(1) { top: 21px; transform: rotate(45deg); }
body.nav-open .nav-toggle-bar:nth-child(2) { opacity: 0; }
body.nav-open .nav-toggle-bar:nth-child(3) { top: 21px; transform: rotate(-45deg); }

/* ---------- Hero(首页板块 1) ---------- */
.hero {
  position: relative; overflow: hidden;
  background: var(--c-primary);
  /* 底部浅蓝渐隐过渡 */
}
.hero::before {
  content: ""; position: absolute; inset: auto 0 -1px 0; height: 160px;
  background: linear-gradient(to bottom, rgba(248,250,253,0), var(--c-bg-alt));
  pointer-events: none;
}
.hero-inner {
  position: relative; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  align-items: center; gap: 40px; min-height: 640px; padding: 88px 0 120px;
}
.hero-copy { max-width: 560px; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin-bottom: 22px;
  padding: 6px 16px; border: 1px solid rgba(156,177,199,.35); border-radius: 999px;
  font-size: 13px; color: var(--c-muted); letter-spacing: .08em;
}
.hero-eyebrow::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--c-green);
}
.hero-title {
  font-size: 56px; font-weight: 500; color: #fff;
  letter-spacing: .01em; line-height: 1.22; margin-bottom: 22px;
}
.hero-sub { font-size: 18px; font-weight: 400; color: var(--c-muted); margin-bottom: 40px; letter-spacing: .02em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.hero-art { position: relative; display: flex; justify-content: center; }
.hero-art svg { width: min(560px, 100%); height: auto; }

/* Hero 动效(克制:弧线流动 + 光点脉冲) */
.hero-flow path {
  stroke-dasharray: 6 10;
  animation: hero-dash 3.2s linear infinite;
}
@keyframes hero-dash { to { stroke-dashoffset: -64; } }
.hero-pulse circle { animation: hero-pulse 2.6s ease-in-out infinite; }
.hero-pulse circle:nth-child(2) { animation-delay: .8s; }
.hero-pulse circle:nth-child(3) { animation-delay: 1.6s; }
.hero-pulse-d2 circle { animation-delay: .4s; }
.hero-pulse-d2 circle:nth-child(2) { animation-delay: 1.2s; }
.hero-pulse-d2 circle:nth-child(3) { animation-delay: 2s; }
@keyframes hero-pulse {
  0%, 100% { opacity: .25; }
  50% { opacity: 1; }
}
@media (prefers-reduced-motion: reduce) {
  .hero-flow path, .hero-pulse circle { animation: none; }
}

/* ---------- 核心数据条(首页板块 2) ---------- */
.stats { background: var(--c-bg-alt); padding: 72px 0 84px; }
.stats-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 44px 28px; box-shadow: var(--shadow-card);
}
.stat-item { text-align: center; padding: 0 8px; }
.stat-item + .stat-item { border-left: 1px solid var(--c-border); }
.stat-num {
  font-family: var(--font-en); font-size: 40px; font-weight: 600;
  color: var(--c-primary); line-height: 1.15; letter-spacing: -.01em;
}
.stat-unit { font-size: 20px; font-weight: 600; color: var(--c-green); margin-left: 2px; }
.stat-label { margin-top: 10px; font-size: 14px; font-weight: 500; color: var(--c-text); }
.stat-note { margin-top: 4px; font-size: 12px; color: var(--c-muted); }

/* ---------- 4 大业务卡片(首页板块 3) ---------- */
.business-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.biz-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 30px 26px 24px;
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.biz-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); border-color: #D4DDEA; }
.biz-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 13px; margin-bottom: 20px;
  background: #EEF3FF; color: var(--c-accent);
}
.biz-icon svg { width: 26px; height: 26px; }
.biz-title { font-size: 20px; font-weight: 600; margin-bottom: 8px; }
.biz-sub { font-size: 13px; color: var(--c-muted); line-height: 1.6; margin-bottom: 18px; min-height: 42px; }
.biz-points { display: grid; gap: 9px; margin-bottom: 22px; flex: 1; }
.biz-points li {
  position: relative; padding-left: 18px; font-size: 13.5px; line-height: 1.55; color: var(--c-text);
}
.biz-points li::before {
  content: ""; position: absolute; left: 0; top: 8px;
  width: 7px; height: 7px; border-radius: 2px; background: var(--c-green);
}
.biz-more { margin-top: auto; }

/* ---------- 贯通案例(首页板块 4) ---------- */
.cases { background: #0A2544; }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card {
  display: flex; flex-direction: column;
  background: #fff; border-radius: var(--radius); padding: 32px 28px 26px;
}
.case-industry {
  display: inline-flex; align-self: flex-start; margin-bottom: 18px;
  padding: 4px 12px; border-radius: 999px;
  background: #EEF3FF; color: var(--c-accent);
  font-size: 12px; font-weight: 500; letter-spacing: .03em;
}
.case-company { font-size: 21px; font-weight: 600; color: var(--c-primary); margin-bottom: 10px; }
.case-tagline { font-size: 13.5px; color: var(--c-text); line-height: 1.7; margin-bottom: 24px; flex: 1; }
.case-metric {
  display: flex; align-items: baseline; gap: 10px;
  padding: 16px 0 14px; border-top: 1px solid var(--c-border); margin-bottom: 18px;
}
.case-metric-value {
  font-family: var(--font-en); font-size: 30px; font-weight: 600; color: var(--c-primary);
}
.case-metric-label { font-size: 13px; color: var(--c-muted); }

/* ---------- CTA(首页板块 5) ---------- */
.cta { background: var(--c-primary); padding: 104px 0; }
.cta-inner { max-width: 860px; margin: 0 auto; text-align: center; }
.cta-title { font-size: 36px; font-weight: 500; color: #fff; margin-bottom: 14px; }
.cta-sub { font-size: 16px; color: var(--c-muted); margin-bottom: 52px; }
.cta-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: left; }
.cta-action {
  display: flex; align-items: flex-start; gap: 16px;
  background: rgba(255,255,255,.05); border: 1px solid rgba(156,177,199,.22);
  border-radius: var(--radius); padding: 22px 22px;
  transition: background-color .2s ease, border-color .2s ease, transform .2s ease;
}
.cta-action:hover {
  background: rgba(255,255,255,.09); border-color: rgba(156,177,199,.45);
  transform: translateY(-3px); color: #fff;
}
.cta-action svg { color: var(--c-green); margin-top: 3px; }
.cta-action-title { display: block; font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 4px; }
.cta-action-value {
  display: block; font-family: var(--font-en); font-size: 15px; color: var(--c-muted);
  word-break: break-all;
}
.cta-action-hint { display: block; font-size: 12px; color: rgba(156,177,199,.75); margin-top: 6px; }

/* ============================================================
   内页通用页头
   ============================================================ */
.page-hero {
  background: linear-gradient(180deg, var(--c-bg-alt) 0%, #fff 100%);
  padding: 84px 0 64px; border-bottom: 1px solid var(--c-border);
}
.page-hero-inner { max-width: 720px; }
.page-title { font-size: 38px; font-weight: 600; margin-bottom: 14px; }
.page-sub { font-size: 16px; color: var(--c-muted); }

/* ============================================================
   产品与服务(services.php)
   ============================================================ */
.prod-section { padding: 84px 0; }
.prod-section + .prod-section { border-top: 1px solid var(--c-border); }
.prod-head { display: flex; align-items: baseline; gap: 18px; margin-bottom: 14px; }
.prod-no {
  font-family: var(--font-en); font-size: 15px; font-weight: 600;
  color: var(--c-accent); letter-spacing: .06em;
}
.prod-title { font-size: 26px; font-weight: 600; }
.prod-desc { max-width: 760px; color: var(--c-muted); margin-bottom: 40px; }

/* 能力/特性卡片 */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 24px; }
.feature-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.feature-card {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 24px 22px; transition: transform .2s ease, box-shadow .2s ease;
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.feature-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 11px; margin-bottom: 16px;
  background: #EEF3FF; color: var(--c-accent);
}
.feature-title { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.feature-text { font-size: 13.5px; color: var(--c-muted); line-height: 1.65; }

/* LCX 三步卡片 */
.lcx-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 44px; }
.step-card {
  position: relative; background: #fff; border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 26px 24px;
}
.step-card::before {
  content: attr(data-step); position: absolute; top: 22px; right: 22px;
  font-family: var(--font-en); font-size: 26px; font-weight: 600; color: #EAF0F8;
}
.step-title { font-size: 16.5px; font-weight: 600; margin-bottom: 8px; position: relative; }
.step-text { font-size: 13.5px; color: var(--c-muted); position: relative; }
.step-text strong { color: var(--c-green); font-weight: 600; font-family: var(--font-en); }

/* LCX 产品行(云专线 / SD-WAN / 云托管 / 混合云) */
.lcx-products { display: grid; gap: 16px; }
.lcx-product {
  display: grid; grid-template-columns: 52px minmax(0,1fr); gap: 20px;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 22px 26px;
}
.lcx-product-icon {
  display: flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 13px; background: #E9FBF6; color: #0BB98C;
}
.lcx-product-title { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.lcx-product-text { font-size: 13.5px; color: var(--c-muted); }
.lcx-product-text strong { color: var(--c-primary); font-weight: 600; font-family: var(--font-en); }

/* 资源地图(SVG 环网示意) */
.map-wrap {
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 48px;
  align-items: center; margin-top: 8px;
  background: var(--c-bg-alt); border: 1px solid var(--c-border);
  border-radius: var(--radius-lg); padding: 40px;
}
.map-svg { width: 100%; height: auto; }
.map-legend { display: grid; gap: 18px; }
.map-legend-item { display: flex; gap: 14px; align-items: flex-start; }
.map-dot {
  flex: none; width: 12px; height: 12px; border-radius: 50%;
  margin-top: 5px; background: var(--c-accent);
}
.map-dot.green { background: var(--c-green); }
.map-legend-title { font-size: 15px; font-weight: 600; color: var(--c-primary); margin-bottom: 3px; }
.map-legend-text { font-size: 13px; color: var(--c-muted); }
.map-legend-text strong { color: var(--c-primary); font-family: var(--font-en); font-weight: 600; }

/* AI 落地案例(小卡) */
.case-mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.case-mini {
  background: var(--c-bg-alt); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 22px 22px;
}
.case-mini-tag {
  display: inline-block; margin-bottom: 12px; padding: 3px 10px;
  border-radius: 999px; background: #fff; border: 1px solid var(--c-border);
  font-size: 12px; color: var(--c-accent); font-weight: 500;
}
.case-mini-title { font-size: 15.5px; font-weight: 600; margin-bottom: 6px; }
.case-mini-text { font-size: 13px; color: var(--c-muted); }

/* 标签组 */
.tag-row { display: flex; flex-wrap: wrap; gap: 12px; }
.tag {
  padding: 7px 18px; border: 1px solid var(--c-border); border-radius: 999px;
  font-size: 13.5px; color: var(--c-text); background: #fff;
}
.tag:hover { border-color: var(--c-accent); color: var(--c-accent); }

/* 企业服务(小卡) */
.aux-services { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; max-width: 720px; }
.aux-card {
  display: flex; align-items: center; gap: 16px;
  background: var(--c-bg-alt); border: 1px solid var(--c-border);
  border-radius: var(--radius); padding: 20px 24px; font-size: 14.5px;
}
.aux-card svg { color: var(--c-accent); }

/* ---------- 解决方案(6 卡) ---------- */
.sol-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.sol-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 28px 26px; scroll-margin-top: calc(var(--header-h) + 20px);
  transition: transform .2s ease, box-shadow .2s ease;
}
.sol-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lift); }
.sol-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 46px; height: 46px; border-radius: 11px; margin-bottom: 18px;
  background: #EEF3FF; color: var(--c-accent);
}
.sol-title { font-size: 17.5px; font-weight: 600; margin-bottom: 10px; }
.sol-text { font-size: 13.5px; color: var(--c-muted); flex: 1; }
.sol-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.sol-tag {
  padding: 3px 10px; border-radius: 6px; background: var(--c-bg-alt);
  border: 1px solid var(--c-border); font-size: 12px; color: var(--c-text);
}

/* ============================================================
   关于我们(about.php)
   ============================================================ */
.intro-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr); gap: 56px; align-items: center; }
.intro-text { font-size: 16px; line-height: 2; }
.intro-text strong { color: var(--c-primary); font-weight: 600; }
.intro-quote {
  margin-top: 26px; padding: 18px 24px;
  border-left: 3px solid var(--c-green); border-radius: 0 var(--radius) var(--radius) 0;
  background: var(--c-bg-alt); font-size: 14.5px; color: var(--c-text);
}
.intro-figures { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.intro-figure {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 24px 22px; text-align: center;
}
.intro-figure-num {
  font-family: var(--font-en); font-size: 32px; font-weight: 600; color: var(--c-primary);
}
.intro-figure-num em { font-style: normal; color: var(--c-green); font-size: 19px; }
.intro-figure-label { margin-top: 6px; font-size: 13px; color: var(--c-muted); }

/* 发展历程(竖向时间轴,纯 CSS) */
.timeline { position: relative; max-width: 800px; margin: 0 auto; padding-left: 8px; }
.timeline::before {
  content: ""; position: absolute; left: 128px; top: 12px; bottom: 12px;
  width: 2px; background: var(--c-border);
}
.tl-item { position: relative; display: grid; grid-template-columns: 100px 1fr; gap: 56px; padding: 0 0 40px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-year {
  position: relative; text-align: right;
  font-family: var(--font-en); font-size: 22px; font-weight: 600; color: var(--c-primary);
}
.tl-year::after {
  content: ""; position: absolute; right: -36px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: #fff; border: 3px solid var(--c-accent);
}
.tl-item.hl .tl-year::after { border-color: var(--c-green); }
.tl-content {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 18px 24px; font-size: 14.5px;
}
.tl-content strong { color: var(--c-primary); font-weight: 600; }

/* 组织架构(SVG 图) */
.org-wrap {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 40px 32px; text-align: center;
}
.org-svg { width: 100%; max-width: 860px; height: auto; }
.org-note { margin-top: 18px; font-size: 13px; color: var(--c-muted); }

/* 品牌理念 + 为什么选凌云(两栏) */
.belief-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 56px; }
.belief-card {
  background: var(--c-primary); color: var(--c-muted); border-radius: var(--radius-lg);
  padding: 40px 36px;
}
.belief-mark { font-size: 13px; letter-spacing: .14em; color: var(--c-green); margin-bottom: 18px; font-weight: 500; }
.belief-title { font-size: 24px; color: #fff; margin-bottom: 18px; }
.belief-text { font-size: 14.5px; line-height: 2; }
.belief-quote {
  margin-top: 24px; padding-top: 22px; border-top: 1px solid rgba(156,177,199,.25);
  font-size: 18px; color: #fff; letter-spacing: .06em; font-weight: 500;
}
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; align-content: start; }
.why-item {
  display: flex; gap: 16px; align-items: flex-start;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 20px 20px;
}
.why-item svg { color: var(--c-accent); margin-top: 2px; }
.why-title { font-size: 15px; font-weight: 600; margin-bottom: 5px; }
.why-text { font-size: 13px; color: var(--c-muted); }
.why-text strong { color: var(--c-green); font-family: var(--font-en); font-weight: 600; }

/* ============================================================
   联系我们(contact.php)
   ============================================================ */
.contact-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 36px 30px; text-align: center;
  transition: transform .2s ease, box-shadow .2s ease;
}
.contact-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lift); }
.contact-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 56px; height: 56px; border-radius: 14px; margin-bottom: 20px;
  background: #EEF3FF; color: var(--c-accent);
}
.contact-title { font-size: 16.5px; font-weight: 600; margin-bottom: 8px; }
.contact-value {
  display: block; font-family: var(--font-en); font-size: 17px; font-weight: 600;
  color: var(--c-primary); word-break: break-all;
}
.contact-value:hover { color: var(--c-accent); }
.contact-note { margin-top: 8px; font-size: 12.5px; color: var(--c-muted); }
.contact-qr-btn { margin-top: 18px; }
.contact-qr-btn img {
  width: 132px; height: 132px; border-radius: var(--radius);
  border: 1px solid var(--c-border); transition: transform .2s ease, box-shadow .2s ease;
}
.contact-qr-btn:hover img { transform: scale(1.04); box-shadow: var(--shadow-lift); }

/* 分公司列表 */
.branch-list { display: grid; gap: 14px; max-width: 860px; margin: 0 auto; }
.branch-row {
  display: flex; align-items: center; gap: 18px;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
  padding: 18px 26px;
}
.branch-row svg { color: var(--c-accent); }
.branch-city { font-size: 16.5px; font-weight: 600; color: var(--c-primary); flex: none; }
.branch-desc { font-size: 13.5px; color: var(--c-muted); margin-left: auto; text-align: right; }

/* 服务承诺条 */
.commit-bar {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 30px 36px; display: flex; flex-wrap: wrap; justify-content: center; gap: 16px 40px;
}
.commit-item { display: flex; align-items: center; gap: 10px; font-size: 14.5px; font-weight: 500; color: var(--c-text); }
.commit-item svg { color: var(--c-green); }

/* 办公地址 */
.address-grid { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr); gap: 48px; align-items: center; }
.map-illustration {
  background: var(--c-bg-alt); border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 28px; text-align: center;
}
.map-illustration svg { width: 100%; max-width: 520px; height: auto; }
.address-info-title { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
.address-info-text { font-size: 15px; color: var(--c-text); line-height: 1.9; }
.address-info-text strong { color: var(--c-primary); }

/* 二维码(2 张并排) */
.qr-section-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 360px)); gap: 24px; justify-content: center; }
.qr-item {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 34px 28px; text-align: center;
}
.qr-item img {
  width: 180px; height: 180px; border-radius: var(--radius); border: 1px solid var(--c-border);
  transition: transform .2s ease, box-shadow .2s ease;
}
.qr-item:hover img { transform: scale(1.03); box-shadow: var(--shadow-lift); }
.qr-title { margin-top: 20px; font-size: 16px; font-weight: 600; }
.qr-note { margin-top: 6px; font-size: 12.5px; color: var(--c-muted); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: var(--c-primary-deep); color: var(--c-muted); }
.footer-promise { border-bottom: 1px solid rgba(156,177,199,.16); padding: 20px 0; }
.promise-inner { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 36px; }
.promise-item { display: inline-flex; align-items: center; gap: 9px; font-size: 13.5px; }
.promise-item svg { color: var(--c-green); }

.footer-main {
  display: grid; grid-template-columns: 1.35fr .95fr .95fr .75fr;
  gap: 48px; padding: 64px 0 48px;
}
.footer-logo { width: 180px; height: auto; filter: brightness(0) invert(1); opacity: .92; }
.footer-slogan { margin: 18px 0 10px; font-size: 15px; color: #fff; font-weight: 500; letter-spacing: .04em; }
.footer-desc { font-size: 13px; line-height: 1.8; }
.footer-title {
  font-size: 13px; font-weight: 600; color: #fff; letter-spacing: .1em;
  margin-bottom: 18px; text-transform: uppercase;
}
.footer-list { display: grid; gap: 13px; font-size: 13.5px; }
.footer-list li { display: flex; align-items: flex-start; gap: 10px; }
.footer-list svg { width: 17px; height: 17px; margin-top: 3px; color: var(--c-muted); }
.footer-list a:hover { color: #fff; }
.footer-list strong { color: #fff; font-family: var(--font-en); font-weight: 600; }
.footer-branches { gap: 0; }
.footer-branches li {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 8.5px 0;
}
.site-footer .branch-city {
  display: inline-flex; align-items: center; gap: 9px; flex: none;
  color: #fff; font-size: 14px; font-weight: 600;
}
.site-footer .branch-city::before {
  content: ""; flex: none; width: 6px; height: 6px; border-radius: 2px;
  background: linear-gradient(135deg, var(--c-accent), var(--c-green));
  box-shadow: 0 0 6px rgba(46,91,255,.45);
}
.site-footer .branch-desc { color: #A9BDD2; font-size: 12px; text-align: right; }

/* 微信二维码卡片(常显,点击放大) */
.footer-qr-card {
  display: flex; flex-direction: column; align-items: center;
  background: #fff; border-radius: 14px; padding: 12px 14px 11px;
  box-shadow: 0 12px 30px rgba(3,14,28,.42);
  transition: transform .2s ease, box-shadow .2s ease;
}
.footer-qr-card:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(3,14,28,.52); }
.footer-qr-card img { display: block; width: 108px; height: 108px; border-radius: 8px; }
.footer-qr-label { margin-top: 10px; font-size: 12px; font-weight: 600; color: var(--c-primary); }
.footer-qr-hint { margin-top: 3px; font-size: 10.5px; color: var(--c-muted); }

.footer-bottom { border-top: 1px solid rgba(156,177,199,.16); padding: 22px 0; font-size: 12.5px; }
.footer-bottom-inner {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px;
}
.footer-icp a:hover { color: #fff; }

/* ============================================================
   二维码放大弹窗
   ============================================================ */
.lightbox {
  position: fixed; inset: 0; z-index: 300;
  display: flex; align-items: center; justify-content: center;
  background: rgba(4, 24, 47, .78);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  padding: 24px;
}
.lightbox[hidden] { display: none; }
.lightbox-panel {
  position: relative; background: #fff; border-radius: var(--radius-lg);
  padding: 40px 44px 30px; text-align: center; max-width: 92vw;
  box-shadow: 0 30px 80px rgba(4,24,47,.4);
}
.lightbox-img { display: block; width: 260px; height: 260px; border-radius: var(--radius); border: 1px solid var(--c-border); }
.lightbox-close {
  position: absolute; top: 12px; right: 14px;
  width: 36px; height: 36px; border-radius: 50%;
  font-size: 26px; line-height: 1; color: var(--c-muted);
}
.lightbox-close:hover { background: var(--c-bg-alt); color: var(--c-primary); }
.lightbox-caption { margin-top: 20px; font-size: 15px; font-weight: 600; color: var(--c-primary); }
.lightbox-tip { margin-top: 6px; font-size: 12.5px; color: var(--c-muted); }

/* ============================================================
   动效(滚动渐入:JS 可用时渐进增强,默认可见)
   ============================================================ */
html.js .reveal { opacity: 0; transform: translateY(22px); }
html.js .reveal.reveal-in {
  opacity: 1; transform: none;
  transition: opacity .6s ease, transform .6s cubic-bezier(.22,.61,.36,1);
}
html.js .reveal.d1 { transition-delay: .08s; }
html.js .reveal.d2 { transition-delay: .16s; }
html.js .reveal.d3 { transition-delay: .24s; }

/* 锚点定位补偿(粘性页头) */
:target { scroll-margin-top: calc(var(--header-h) + 16px); }
#cloud, #ai, #network, #overseas, #enterprise, #solutions, #hybrid {
  scroll-margin-top: calc(var(--header-h) + 16px);
}

/* ============================================================
   响应式
   ============================================================ */
/* 平板(768–1199px):网格降 2 列 */
@media (max-width: 1199px) {
  .hero-inner { min-height: 560px; padding: 72px 0 104px; gap: 24px; }
  .hero-title { font-size: 46px; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); gap: 28px 18px; padding: 36px 24px; }
  .stat-item { padding: 10px 4px; }
  .stat-item + .stat-item { border-left: 0; }
  .stat-item:nth-child(even) { border-left: 1px solid var(--c-border); }
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: repeat(3, 1fr); }
  .feature-grid, .feature-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .sol-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer-wechat { grid-column: 1 / -1; display: flex; flex-direction: column; align-items: center; }
  .map-wrap { grid-template-columns: 1fr; gap: 32px; }
  .intro-grid, .belief-grid, .address-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* 导航收为汉堡(<992px) */
@media (max-width: 991px) {
  :root { --header-h: 64px; }
  .nav-toggle { display: block; }
  .site-nav-wrap {
    position: fixed; top: var(--header-h); left: 0; right: 0; z-index: 99;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow-lift);
    max-height: calc(100vh - var(--header-h)); overflow-y: auto;
    padding: 12px 24px 24px;
    transform: translateY(-12px); opacity: 0; visibility: hidden;
    transition: opacity .22s ease, transform .22s ease, visibility .22s;
  }
  body.nav-open .site-nav-wrap { transform: none; opacity: 1; visibility: visible; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-link { display: flex; justify-content: space-between; padding: 13px 10px; font-size: 15.5px; }
  .nav-item.current > .nav-link::after { display: none; }
  .nav-item.current > .nav-link { background: #F1F5FB; border-radius: 10px; }
  .nav-caret { transform: rotate(-45deg) translateY(-1px); }
  .nav-item.has-drop.drop-open .nav-caret { transform: rotate(45deg) translateY(-1px); }
  .nav-drop {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; padding: 0 0 6px 14px; min-width: 0;
    display: none;
  }
  .nav-item.has-drop.drop-open .nav-drop { display: block; }
  .nav-lang { margin-top: 8px; }
  .nav-link-lang { display: block; text-align: center; }
  .header-cta { margin-top: 14px; }
  .brand-logo { width: 150px; }
  body.nav-open { overflow: hidden; }
}

/* 手机(<768px):单列堆叠,Hero 480px */
@media (max-width: 767px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 24px; }
  .section-head { margin-bottom: 40px; }

  .hero-inner { grid-template-columns: 1fr; min-height: 480px; padding: 56px 0 88px; }
  .hero-title { font-size: 34px; }
  .hero-sub { font-size: 15.5px; margin-bottom: 32px; }
  .hero-art { display: none; } /* 手机端隐藏装饰图形,聚焦文案 */
  .hero-actions .btn { width: 100%; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 12px; }
  .stat-item:nth-child(even) { border-left: 1px solid var(--c-border); }
  .stat-item:nth-child(3) { border-left: 0; }
  .stat-num { font-size: 32px; }
  .stat-note { display: none; }

  .business-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .cta-actions { grid-template-columns: 1fr; }
  .cta-title { font-size: 27px; }

  .page-title { font-size: 29px; }
  .page-hero { padding: 60px 0 48px; }
  .prod-title { font-size: 22px; }
  .feature-grid, .feature-grid.cols-3, .lcx-steps,
  .case-mini-grid, .sol-grid,
  .contact-cards, .qr-section-grid, .aux-services { grid-template-columns: 1fr; }
  .intro-figures { grid-template-columns: repeat(2, 1fr); gap: 14px; }
  .why-grid { grid-template-columns: 1fr; }

  /* 时间轴手机端纵向堆叠 */
  .timeline::before { left: 12px; }
  .tl-item { grid-template-columns: 1fr; gap: 12px; padding-left: 40px; padding-bottom: 28px; }
  .tl-year { text-align: left; }
  .tl-year::after { right: auto; left: -36px; }

  .branch-row { flex-wrap: wrap; gap: 8px; }
  .branch-desc { margin-left: 0; text-align: left; width: 100%; padding-left: 30px; }
  .footer-branches li { flex-wrap: wrap; row-gap: 3px; }
  .site-footer .branch-desc { text-align: left; width: 100%; padding-left: 15px; }
  .footer-wechat { display: flex; flex-direction: column; align-items: center; }
  .commit-bar { gap: 12px 22px; padding: 24px 20px; }

  .footer-main { grid-template-columns: 1fr; gap: 36px; padding: 48px 0 36px; }
  .footer-bottom-inner { justify-content: center; text-align: center; }
  .lightbox-panel { padding: 30px 22px 24px; }
  .lightbox-img { width: min(260px, 72vw); height: auto; }
}

/* 超窄屏 */
@media (max-width: 400px) {
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-left: 0 !important; }
  .intro-figures { grid-template-columns: 1fr; }
}