/* ============================================
   多诺科技官网 — 设计系统
   方向：政务科技风 / 编辑排版式秩序感
   ============================================ */

:root {
  /* 主色 */
  --ink: #0E2A47;
  --ink-deep: #081B30;
  --ink-soft: #34506E;

  /* 政企蓝：交互主色 */
  --primary: #2473D2;
  --primary-dark: #1A5AA8;
  --primary-deep: #144A8C;
  --primary-soft: #EAF2FC;

  /* 强调色 */
  --teal: #0D8577;
  --teal-deep: #0A6B60;
  --teal-wash: #E9F5F3;
  --teal-bright: #1FD6C1;
  --amber: #C8901F;
  --amber-wash: #FBF3E2;

  /* 中性 */
  --text: #16293D;
  --text-2: #4A617A;
  --text-3: #63788C;
  --line: #DCE5EF;
  --line-2: #ECF2F1;
  --bg: #FFFFFF;
  --bg-alt: #EEF3FA;

  /* 字体 */
  --font: "PingFang SC", "Source Han Sans SC", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  /* 间距 */
  --s1: 4px;  --s2: 8px;  --s3: 12px; --s4: 16px;
  --s5: 24px; --s6: 32px; --s7: 48px; --s8: 64px;
  --s9: 96px;

  /* 圆角（克制） */
  --r1: 2px;
  --r2: 4px;
  --r3: 8px;

  /* 阴影（极轻） */
  --shadow: 0 1px 2px rgba(14, 42, 71, 0.04), 0 8px 24px -12px rgba(14, 42, 71, 0.12);
  --shadow-lift: 0 2px 4px rgba(14, 42, 71, 0.05), 0 18px 40px -16px rgba(14, 42, 71, 0.18);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --container: 1200px;
}

/* ---------- 基础重置 ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  overflow-x: hidden;
  font-feature-settings: "tnum" 0;
}

a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
strong { font-weight: 600; color: var(--ink); }

::selection { background: var(--ink); color: #fff; }

/* ---------- 图标 ---------- */
svg.ico { width: 100%; height: 100%; display: block; }

/* ---------- 社交入口：微信公众号 / 企业微信 ---------- */
.social-link {
  position: relative; width: 36px; height: 36px; padding: 0; flex: none;
  display: grid; place-items: center;
  border: 1px solid var(--line); border-radius: var(--r2);
  background: #fff; color: var(--text-2); cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.social-link .ico { width: 20px; height: 20px; }
.social-link:hover, .social-link:focus-visible, .social-link.is-pinned { background: var(--ink); color: #fff; border-color: var(--ink); }
.social-link:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

/* PC：悬停 / 键盘聚焦显示二维码 */
.social-qr-pop {
  position: absolute; bottom: calc(100% + 12px); left: 50%; z-index: 40;
  display: block; width: 172px; padding: 12px; text-align: center;
  transform: translate(-50%, 6px);
  background: #fff; border: 1px solid var(--line); border-radius: var(--r3);
  box-shadow: var(--shadow-lift); color: var(--text);
  opacity: 0; visibility: hidden; pointer-events: none;
  transition: opacity 0.18s var(--ease), transform 0.18s var(--ease), visibility 0.18s;
}
.social-qr-pop::after {
  content: ""; position: absolute; top: 100%; left: 50%; margin-left: -6px;
  border: 6px solid transparent; border-top-color: #fff;
}
.social-link:hover .social-qr-pop,
.social-link:focus-visible .social-qr-pop,
.social-link.is-pinned .social-qr-pop { opacity: 1; visibility: visible; transform: translate(-50%, 0); pointer-events: auto; }
.social-qr-pop img { width: 146px; height: 146px; object-fit: contain; margin: 0 auto 8px; border: 1px solid var(--line-2); border-radius: var(--r2); }
.social-qr-pop strong { display: block; font-size: 13px; font-weight: 600; color: var(--ink); }
.social-qr-pop small { display: block; margin-top: 2px; font-size: 11.5px; line-height: 1.6; color: var(--text-3); }

/* 页脚入口贴近右边缘，浮层改为右对齐避免溢出 */
.footer .social-link {
  width: 34px; height: 34px; border-radius: var(--r1);
  border-color: rgba(255,255,255,0.16); background: transparent; color: rgba(255,255,255,0.6);
}
.footer .social-link:hover, .footer .social-link:focus-visible, .footer .social-link.is-pinned { background: #fff; color: var(--ink-deep); border-color: #fff; }
.footer .social-qr-pop { left: auto; right: 0; transform: translateY(6px); }
.footer .social-link:hover .social-qr-pop,
.footer .social-link:focus-visible .social-qr-pop,
.footer .social-link.is-pinned .social-qr-pop { transform: translateY(0); }
.footer .social-qr-pop::after { left: auto; right: 11px; margin-left: 0; }

@media (hover: none) {
  .social-qr-pop { display: none !important; }
}

/* 手机端：二维码兜底弹层 */
.social-modal { display: none; position: fixed; inset: 0; z-index: 2100; }
.social-modal.active { display: flex; align-items: center; justify-content: center; }
.social-modal-overlay { position: absolute; inset: 0; background: rgba(8, 27, 48, 0.6); backdrop-filter: blur(3px); }
.social-modal-content {
  position: relative; width: calc(100% - 48px); max-width: 320px;
  padding: 28px 24px 24px; background: #fff; border-radius: var(--r3);
  text-align: center; box-shadow: var(--shadow-lift);
}
.social-modal-close {
  position: absolute; top: 12px; right: 12px; width: 30px; height: 30px; padding: 6px;
  display: grid; place-items: center; background: none; border: 1px solid var(--line);
  border-radius: var(--r2); color: var(--text-2); cursor: pointer;
}
.social-modal-close .ico { width: 14px; height: 14px; }
.social-modal-close:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.social-modal-title { font-size: 16px; font-weight: 600; color: var(--ink); }
.social-modal-img { width: 200px; height: 200px; object-fit: contain; margin: 16px auto 12px; border: 1px solid var(--line); border-radius: var(--r2); }
.social-modal-hint { font-size: 12.5px; line-height: 1.8; color: var(--text-2); }
.social-modal-open { width: 100%; margin-top: 16px; }
.social-modal-open[hidden] { display: none; }

/* ---------- 布局 ---------- */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.section { padding: var(--s9) 0; position: relative; }
.section + .section:not(.bg-light):not(.bg-primary) { border-top: 1px solid var(--line-2); }
.section-divider { border-top: 1px solid var(--line-2) !important; }

/* ---------- 章节标题：编号 + 标题 + 描述 ---------- */
.section-title {
  display: flex;
  align-items: baseline;
  gap: 18px;
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 14px;
}
/* 编号：与标题基线对齐，上方带一条等宽短横线 */
.section-title::before {
  content: attr(data-idx);
  flex: none;
  min-width: 40px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--teal);
  padding-top: 8px;
  border-top: 1px solid var(--teal);
}
.section-subtitle {
  font-size: 15px;
  color: var(--text-2);
  max-width: 660px;
  padding-left: 58px;
  margin-bottom: 52px;
}
.section-head { margin-bottom: 0; }
.section-head .section-title { margin-bottom: 0; }

/* 居中变体（用于深色区块） */
.section-title.is-center { flex-direction: column; align-items: center; gap: 10px; text-align: center; }
.section-title.is-center::before { min-width: 0; width: 44px; text-align: center; }
.section-subtitle.is-center { text-align: center; margin-left: auto; margin-right: auto; padding-left: 0; }

.bg-light { background: var(--bg-alt); }
.bg-primary { background: var(--ink); color: #fff; }
.bg-primary .section-title { color: #fff; }
.bg-primary .section-title::before { color: var(--amber); border-color: rgba(180, 128, 28, 0.5); }
.bg-primary .section-subtitle { color: rgba(255, 255, 255, 0.62); }

/* ============================================
   导航
   ============================================ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line-2);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.navbar.scrolled { border-bottom-color: var(--line); background: rgba(255, 255, 255, 0.96); }

.navbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px; transition: height 0.3s var(--ease);
}
.navbar.scrolled .navbar-inner { height: 60px; }

/* ---------- 品牌标志 · VI v1.0 组合模式 4 变体（中文主导） ----------
   图形 + 多诺科技 + DINO TECH 副标；深色底一律使用 *-white.svg。
   资产位于 assets/brand/，源档 VI/assets/，品牌更新时两边需同步。 */
.logo { display: inline-flex; align-items: center; flex: none; }
.brand-logo { display: block; height: 46px; width: auto; transition: height 0.3s var(--ease); }
.navbar.scrolled .brand-logo { height: 40px; }
.logo:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; border-radius: var(--r2); }

.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-item { position: relative; }
.nav-link {
  display: block; padding: 8px 14px; font-size: 14px; color: var(--text-2);
  border-radius: var(--r2); transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav-link:hover { color: var(--ink); background: var(--bg-alt); }
.nav-link.active { color: var(--ink); font-weight: 500; }
.nav-link.active::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: -1px;
  height: 2px; background: var(--primary);
}

.nav-dropdown-menu {
  position: absolute; top: calc(100% + 8px); left: 50%; transform: translateX(-50%) translateY(-6px);
  min-width: 190px; padding: 6px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--r3); box-shadow: var(--shadow-lift);
  opacity: 0; visibility: hidden; transition: all 0.22s var(--ease);
}
.nav-item:hover .nav-dropdown-menu { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
.nav-dropdown-item {
  display: block; padding: 8px 12px; font-size: 13.5px; color: var(--text-2);
  border-radius: var(--r1); transition: all 0.18s var(--ease);
}
.nav-dropdown-item:hover { background: var(--primary-soft); color: var(--primary-dark); }

.nav-actions { display: flex; align-items: center; gap: 10px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 10px 20px; font-size: 14px; font-weight: 500; letter-spacing: 0.01em;
  border: 1px solid transparent; border-radius: var(--r2); cursor: pointer;
  transition: all 0.22s var(--ease);
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-teal { background: var(--teal); color: #fff; }
.btn-teal:hover { background: var(--teal-deep); }
.btn-outline { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-outline:hover { border-color: var(--primary); background: var(--primary); color: #fff; }
.btn-ghost { color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--primary); color: var(--primary); }
.btn-lg { padding: 14px 28px; font-size: 15px; }
.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn .ico { width: 16px; height: 16px; flex: none; }

.mobile-menu-btn {
  display: none; flex-direction: column; gap: 5px; padding: 12px 14px;
  background: none; border: none; cursor: pointer;
}
.mobile-menu-btn span { display: block; width: 20px; height: 1.5px; background: var(--ink); transition: all 0.25s var(--ease); }
.mobile-menu-btn.active span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ============================================
   Hero
   ============================================ */
.hero {
  position: relative; padding: 150px 0 100px;
  background: var(--ink-deep);
  color: #fff; overflow: hidden;
}
/* 极光层：左上/右下的低饱和色晕，给深色区一点纵深 */
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(ellipse 52% 58% at 80% 14%, rgba(14, 124, 113, 0.34), transparent 70%),
    radial-gradient(ellipse 44% 48% at 8% 82%, rgba(180, 128, 28, 0.13), transparent 70%);
}
/* 点阵层：重心右移，左侧文字区保持干净 */
.hero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.14) 1px, transparent 1.5px);
  background-size: 32px 32px;
  background-position: 16px 16px;
  mask-image: radial-gradient(ellipse 48% 64% at 80% 30%, #000 0%, rgba(0, 0, 0, 0.55) 52%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 48% 64% at 80% 30%, #000 0%, rgba(0, 0, 0, 0.55) 52%, transparent 100%);
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 72px; align-items: center; }
.hero-inner > * { min-width: 0; }
.hero-content { min-width: 0; }

.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 28px;
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--amber);
}
.hero-eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--amber); }

.hero-title {
  font-size: 52px; font-weight: 600; line-height: 1.18; letter-spacing: -0.025em;
  color: #fff; margin-bottom: 26px;
}
.hero-title em { font-style: normal; color: var(--teal-bright); }
.hero-subtitle { font-size: 16px; line-height: 1.85; color: rgba(255,255,255,0.72); max-width: 520px; margin-bottom: 40px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 56px; }
.hero .btn-outline { background: transparent; border-color: rgba(255,255,255,0.22); color: #fff; }
.hero .btn-outline:hover { background: #fff; color: var(--ink); border-color: #fff; }

.hero-stats { display: flex; gap: 44px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,0.12); }
.hero-stat-num { font-family: var(--font-mono); font-size: 28px; font-weight: 500; color: #fff; letter-spacing: -0.02em; }
.hero-stat-num small { font-size: 16px; margin-left: 2px; color: var(--amber); }
.hero-stat-label { font-size: 12.5px; color: rgba(255,255,255,0.5); letter-spacing: 0.04em; }

/* Hero 侧栏：数据面板 */
.hero-panel { border: 1px solid rgba(255,255,255,0.14); border-radius: var(--r3); background: rgba(255,255,255,0.03); overflow: hidden; }
.hero-panel-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 18px; border-bottom: 1px solid rgba(255,255,255,0.1);
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: rgba(255,255,255,0.42);
}
.hero-panel-body { padding: 22px 18px; }
.hero-metric { padding: 14px 0; border-bottom: 1px dashed rgba(255,255,255,0.1); }
.hero-metric:last-child { border-bottom: none; }
.hero-metric-top { display: flex; align-items: baseline; justify-content: space-between; gap: 14px; margin-bottom: 8px; }
.hero-metric-label { font-size: 13px; color: rgba(255,255,255,0.72); min-width: 0; }
.hero-metric-value { font-family: var(--font-mono); font-size: 15px; color: var(--amber); flex: none; white-space: nowrap; }
.hero-spark { position: relative; height: 64px; }
.hero-spark svg { display: block; width: 100%; height: 100%; }
.hero-spark-line { fill: none; stroke: #5FD3C4; stroke-width: 1.5; stroke-linejoin: round; stroke-linecap: round; }
.hero-spark-dot {
  position: absolute; right: 0; width: 6px; height: 6px; border-radius: 50%;
  background: var(--teal-bright); box-shadow: 0 0 0 3px rgba(31,214,193,0.18);
  transform: translate(50%, 50%);
}

/* ============================================
   卡片通用（编辑式排版，非气泡卡）
   ============================================ */
.values-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--r3); overflow: hidden; }
.value-card { display: flex; flex-direction: column; background: #fff; padding: 40px 34px; box-shadow: 0 0 0 1px var(--line); transition: background 0.3s var(--ease); }
.value-card:hover { background: var(--bg-alt); }
.value-icon { width: 34px; height: 34px; color: var(--teal); margin-bottom: 22px; }
.value-icon .ico { width: 34px; height: 34px; }
.value-title { font-size: 17px; font-weight: 600; color: var(--ink); margin-bottom: 10px; letter-spacing: 0.01em; }
.value-desc { font-size: 14px; color: var(--text-2); line-height: 1.8; margin-bottom: 20px; }
.value-link {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; font-weight: 500; color: var(--primary-dark);
  margin-top: auto;
  transition: gap 0.25s var(--ease), color 0.25s var(--ease);
}
.value-link:hover { gap: 12px; color: var(--primary-deep); }
.value-link .ico { width: 14px; height: 14px; }

/* 服务矩阵：hairline 网格，列间竖线落在单元格边界，四列共用同一套内边距。
   注：不再对首末列清零 padding——那样 hover 底色虽铺满单元格，但文字贴边，
   高亮块左右留白不对称；统一 28px 后悬停范围与卡片视觉块一致。 */
.services-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
.service-card {
  display: flex; flex-direction: column;
  padding: 34px 28px;
  border-right: 1px solid var(--line);
  transition: background 0.3s var(--ease);
}
.service-card:nth-child(4n) { border-right: none; }
.service-card:hover { background: var(--bg-alt); }
.bg-light .service-card:hover { background: #fff; }
/* 多行矩阵：补齐行间横线，避免竖线长短参差 */
.biz-map .service-card { border-bottom: 1px solid var(--line); }
.biz-map .service-card:nth-last-child(-n+2) { border-bottom: none; }
.service-icon { width: 26px; height: 26px; color: var(--ink); margin-bottom: 22px; flex: none; }
.service-icon .ico { width: 26px; height: 26px; }
.service-card:hover .service-icon { color: var(--teal); }
.service-title { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 10px; line-height: 1.5; }
.service-desc { font-size: 13.5px; line-height: 1.75; color: var(--text-2); margin-bottom: 22px; }
.service-link {
  margin-top: auto; align-self: flex-start;
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13px; font-weight: 500; color: var(--primary-dark); transition: gap 0.25s var(--ease), color 0.25s var(--ease);
}
.service-link:hover { gap: 12px; color: var(--primary-deep); }
.service-link .ico { width: 14px; height: 14px; }

/* 行业图谱：等分 hairline 列表 */
.industries-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.industry-card {
  display: flex; flex-direction: column; align-items: center; gap: 12px;
  padding: 28px 10px; border-right: 1px solid var(--line);
  cursor: pointer; transition: background 0.3s var(--ease);
}
.industry-card:last-child { border-right: none; }
.industry-card:hover { background: var(--bg-alt); }
.industry-icon { width: 26px; height: 26px; color: var(--text-3); transition: color 0.3s var(--ease); }
.industry-icon .ico { width: 26px; height: 26px; }
.industry-card:hover .industry-icon { color: var(--teal); }
.industry-name { font-size: 13px; color: var(--text-2); }

/* 案例 */
.cases-grid, .cases-list { counter-reset: casenum; }
.cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 1fr; gap: 24px; }
.case-card {
  border: 1px solid var(--line); border-radius: var(--r3); background: #fff; overflow: hidden;
  counter-increment: casenum;
  display: flex; flex-direction: column;
  transition: all 0.3s var(--ease);
}
.case-card:hover { border-color: var(--ink); transform: translateY(-3px); box-shadow: var(--shadow); }
/* 图位：浅底编号 + 细网格，与文章/新闻卡片统一节奏 */
.case-image {
  height: 92px; display: flex; align-items: center; gap: 14px; padding: 0 24px;
  background: var(--bg-alt); border-bottom: 1px solid var(--line); position: relative; overflow: hidden;
}
.case-image::before,
.article-image::after,
.news-image::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, rgba(14, 42, 71, 0.08) 1px, transparent 1.5px);
  background-size: 24px 24px;
  background-position: 12px 12px;
  mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.55) 48%, transparent 92%);
  -webkit-mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.55) 48%, transparent 92%);
}
.case-image::after {
  content: "NO." counter(casenum, decimal-leading-zero);
  order: 2; margin-left: auto; position: relative; z-index: 1;
  font-family: var(--font-mono); font-size: 26px; color: rgba(14, 42, 71, 0.16); letter-spacing: 0.02em;
}
.case-image .ico { width: 30px; height: 30px; color: var(--ink); position: relative; z-index: 1; flex: none; order: 1; }
.case-card:hover .case-image .ico { color: var(--teal); }
.case-content { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.case-tag {
  display: inline-block; padding: 3px 9px; border-radius: var(--r1);
  background: var(--teal-wash); color: var(--teal-deep);
  font-size: 11.5px; letter-spacing: 0.04em; margin-bottom: 12px;
}
.case-title { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 8px; line-height: 1.5; }
.case-desc { font-size: 13.5px; color: var(--text-2); margin-bottom: 16px; }
.case-link { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 500; color: var(--primary-dark); margin-top: auto; transition: gap 0.25s var(--ease), color 0.25s var(--ease); }
.case-link:hover { gap: 12px; color: var(--primary-deep); }
.case-link .ico { width: 14px; height: 14px; }

/* 优势 */
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.advantage-card { padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.16); }
.advantage-icon { width: 26px; height: 26px; color: var(--amber); margin-bottom: 18px; }
.advantage-icon .ico { width: 26px; height: 26px; }
.advantage-title { font-size: 16px; font-weight: 600; margin-bottom: 8px; }
.advantage-desc { font-size: 13.5px; color: rgba(255,255,255,0.58); line-height: 1.8; }

/* 评价 */
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.testimonial-card { display: flex; flex-direction: column; padding: 32px 30px; border: 1px solid var(--line); border-radius: var(--r3); background: #fff; }
.testimonial-quote { width: 22px; height: 22px; color: var(--teal); margin-bottom: 18px; }
.testimonial-quote .ico { width: 22px; height: 22px; }
.testimonial-text { font-size: 14.5px; line-height: 1.9; color: var(--text); margin-bottom: 24px; }
.testimonial-author { display: flex; align-items: center; gap: 12px; margin-top: auto; padding-top: 20px; border-top: 1px solid var(--line-2); }
.testimonial-avatar {
  width: 38px; height: 38px; display: grid; place-items: center; flex: none;
  background: var(--ink); color: #fff; font-size: 14px; border-radius: var(--r1);
}
.testimonial-info h4 { font-size: 14px; font-weight: 600; color: var(--ink); }
.testimonial-info p { font-size: 12.5px; color: var(--text-3); }

/* 资源引流 */
.resources { background: var(--ink); color: #fff; }
.resources-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.resources-icon { width: 30px; height: 30px; color: var(--amber); margin-bottom: 22px; }
.resources-icon .ico { width: 30px; height: 30px; }
.resources-title { font-size: 30px; font-weight: 600; margin-bottom: 14px; letter-spacing: -0.01em; }
.resources-desc { font-size: 15px; color: rgba(255,255,255,0.62); margin-bottom: 30px; max-width: 460px; }
.resources-form { display: flex; gap: 10px; }
.resources-input {
  flex: 1; padding: 13px 16px; border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--r2); background: rgba(255,255,255,0.06); color: #fff; font-size: 14px;
}
.resources-input::placeholder { color: rgba(255,255,255,0.35); }
.resources-input:focus { outline: none; border-color: var(--primary); background: rgba(255,255,255,0.1); }
.resources-note { font-size: 12px; color: rgba(255,255,255,0.48); margin-top: 14px; }
.resources-side { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.12); border-radius: var(--r3); overflow: hidden; }
.resources-side-item { padding: 26px 24px; background: var(--ink); }
.resources-side-item h4 { font-size: 14.5px; font-weight: 600; margin-bottom: 6px; }
.resources-side-item p { font-size: 12.5px; color: rgba(255,255,255,0.5); line-height: 1.7; }

/* CTA */
.cta { background: var(--bg-alt); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 48px; flex-wrap: wrap; }
.cta-title { font-size: 30px; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; margin-bottom: 8px; }
.cta-desc { font-size: 15px; color: var(--text-2); }
.cta-actions { display: flex; gap: 12px; }

/* ============================================
   页脚
   ============================================ */
.footer { background: var(--ink-deep); color: #fff; padding: var(--s8) 0 var(--s6); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: 48px; padding-bottom: 56px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand { min-width: 0; }
.footer-logo { display: flex; align-items: center; margin-bottom: 18px; }
.footer-logo img { display: block; height: 50px; width: auto; }
.footer-desc { font-size: 13.5px; color: rgba(255,255,255,0.45); line-height: 1.9; max-width: 290px; }
.footer-title { font-size: 12px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(255,255,255,0.48); margin-bottom: 18px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-link { font-size: 13.5px; color: rgba(255,255,255,0.6); transition: color 0.2s var(--ease); }
.footer-link:hover { color: #fff; }
.footer-bottom { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px; padding-top: 28px; }
.footer-copyright { font-size: 12.5px; color: rgba(255,255,255,0.48); }
.footer-beian {
  justify-self: center; font-size: 12.5px; color: rgba(255,255,255,0.48);
  white-space: nowrap; text-decoration: none; transition: color 0.2s var(--ease);
}
.footer-beian:hover, .footer-beian:focus-visible { color: #fff; text-decoration: none; }
.footer-beian:focus-visible { outline: 1px solid rgba(255,255,255,0.6); outline-offset: 3px; border-radius: var(--r1); }
.footer-social { display: flex; gap: 10px; justify-self: end; }

/* ============================================
   内页通用
   ============================================ */
.page-header { position: relative; padding: 130px 0 64px; background: var(--ink-deep); color: #fff; overflow: hidden; }
.page-header::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.11) 1px, transparent 1.5px);
  background-size: 32px 32px;
  background-position: 16px 16px;
  mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.6) 58%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.6) 58%, transparent 100%);
}
.page-header > .container { position: relative; }
.page-title { font-size: 38px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 12px; }
.page-breadcrumb { display: flex; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.45); }
.page-breadcrumb a:hover { color: #fff; }
.page-breadcrumb span:last-child { color: rgba(255,255,255,0.7); }
.page-lede { margin-top: 20px; font-size: 15.5px; line-height: 1.9; color: rgba(255,255,255,0.6); max-width: 640px; }

/* ============================================
   关于我们
   ============================================ */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.about-intro-content h2 { font-size: 28px; font-weight: 600; color: var(--ink); line-height: 1.45; margin-bottom: 24px; letter-spacing: -0.01em; }
.about-intro-content p { font-size: 14.5px; color: var(--text-2); line-height: 1.95; margin-bottom: 16px; }
.about-intro-figure { position: relative; }
.about-intro-image {
  background: var(--ink); border-radius: var(--r3); overflow: hidden;
  position: relative; padding: 26px 24px 20px;
  display: flex; flex-direction: column; justify-content: center; gap: 8px;
  min-height: 320px;
}
.about-intro-image::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.11) 1px, transparent 1.5px);
  background-size: 32px 32px;
  background-position: 16px 16px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 45%, #000 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 45%, #000 0%, transparent 100%);
}
.about-figure-tag {
  position: absolute; left: 0; bottom: -20px; padding: 12px 20px;
  background: var(--teal); color: #fff; font-size: 13px; border-radius: var(--r2);
}
.about-figure-tag b { font-family: var(--font-mono); font-size: 20px; font-weight: 500; margin-right: 8px; }

/* 时间线 */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 4px; top: 8px; bottom: 8px; width: 1px; background: var(--line); }
.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot { position: absolute; left: -34px; top: 7px; width: 9px; height: 9px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 0 4px var(--bg-alt); }
.timeline-year { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: 0.1em; color: var(--teal); margin-bottom: 6px; }
.timeline-title { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 6px; }
.timeline-desc { font-size: 14px; color: var(--text-2); }

/* 团队 */
.team-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.team-card { text-align: left; }
.team-avatar {
  width: 100%; aspect-ratio: 1; display: grid; place-items: center; margin-bottom: 18px;
  background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--r3);
  font-size: 40px; font-weight: 300; color: var(--ink); letter-spacing: 0.05em;
  transition: all 0.3s var(--ease);
}
.team-card:hover .team-avatar { background: var(--ink); color: #fff; border-color: var(--ink); }
.team-name { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 3px; }
.team-role { font-size: 13px; color: var(--text-3); }

/* 资质 */
.certifications-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.certification-card { padding: 30px 24px; border: 1px solid var(--line); border-radius: var(--r3); background: #fff; transition: all 0.3s var(--ease); }
.certification-card:hover { border-color: var(--ink); }
.certification-icon { width: 26px; height: 26px; color: var(--teal); margin-bottom: 18px; }
.certification-icon .ico { width: 26px; height: 26px; }
.certification-title { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 5px; }
.certification-desc { font-size: 13px; color: var(--text-2); }

/* 合作伙伴 */
.partners-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--r3); overflow: hidden; }
.partner-logo { height: 92px; display: grid; place-items: center; background: #fff; box-shadow: 0 0 0 1px var(--line); font-size: 13px; color: var(--text-3); transition: all 0.3s var(--ease); }
.partner-logo:hover { background: var(--bg-alt); color: var(--ink); }

/* ============================================
   服务详情
   ============================================ */
.service-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.service-detail:nth-child(even) .service-detail-figure { order: 2; }
.service-detail-figure { position: relative; }
/* 方案详情（solutions.html 复用同一套视觉规则） */
.solution-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }
.solution-detail + .solution-detail { margin-top: 88px; padding-top: 88px; border-top: 1px solid var(--line); }
.solution-detail:nth-of-type(even) .solution-detail-figure { order: 2; }
.solution-detail-figure { position: relative; }
.solution-detail-content h3 { font-size: 24px; font-weight: 600; color: var(--ink); margin-bottom: 16px; letter-spacing: -0.01em; }
.solution-detail-content > p { font-size: 14.5px; color: var(--text-2); line-height: 1.95; margin-bottom: 24px; }
.solution-block-title {
  font-size: 13px; font-weight: 600; letter-spacing: 0.06em; color: var(--ink);
  padding-left: 10px; border-left: 2px solid var(--teal); margin: 24px 0 14px;
}
.solution-stats { grid-template-columns: repeat(3, 1fr); margin-top: 20px; }
/* 详情图位：系统构成示意（替代空底板 + 单图标） */
.service-detail-image, .solution-detail-image {
  background: var(--ink); border-radius: var(--r3); position: relative;
  overflow: hidden; padding: 26px 24px 20px;
  display: flex; flex-direction: column; justify-content: center; gap: 8px;
  min-height: 320px;
}
.service-detail-image::before, .solution-detail-image::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image: radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.11) 1px, transparent 1.5px);
  background-size: 32px 32px;
  background-position: 16px 16px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 45%, #000 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 80% at 50% 45%, #000 0%, transparent 100%);
}
.map-head {
  position: relative; display: flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 10.5px; letter-spacing: 0.16em;
  color: rgba(255, 255, 255, 0.4); margin-bottom: 10px;
}
.map-head::after { content: ""; flex: 1; height: 1px; background: rgba(255, 255, 255, 0.14); }
.map-layer {
  position: relative; display: flex; align-items: center; gap: 12px;
  padding: 11px 14px; border: 1px solid rgba(255, 255, 255, 0.13);
  background: rgba(255, 255, 255, 0.035); border-radius: var(--r1);
}
.map-layer .ico { width: 18px; height: 18px; color: var(--teal-bright); flex: none; }
.map-layer-name { font-size: 13.5px; color: rgba(255, 255, 255, 0.86); }
.map-layer-tag {
  margin-left: auto; font-family: var(--font-mono); font-size: 10.5px;
  letter-spacing: 0.08em; color: rgba(255, 255, 255, 0.38);
}
.service-detail-content h3 { font-size: 24px; font-weight: 600; color: var(--ink); margin-bottom: 16px; letter-spacing: -0.01em; }
.service-detail-content p { font-size: 14.5px; color: var(--text-2); line-height: 1.95; margin-bottom: 26px; }
.service-features { display: flex; flex-direction: column; gap: 12px; }
.service-feature { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text); }
.service-feature .ico { width: 16px; height: 16px; color: var(--teal); flex: none; }

/* ============================================
   解决方案
   ============================================ */
.solutions-grid { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 1fr; gap: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--r3); overflow: hidden; }
.solution-card { padding: 36px 32px; background: #fff; box-shadow: 0 0 0 1px var(--line); transition: background 0.3s var(--ease); display: flex; flex-direction: column; flex: 1; }
.solution-card:hover { background: var(--bg-alt); }
.solution-icon { width: 28px; height: 28px; color: var(--teal); margin-bottom: 20px; }
.solution-icon .ico { width: 28px; height: 28px; }
.solution-title { font-size: 17px; font-weight: 600; color: var(--ink); margin-bottom: 10px; }
.solution-desc { font-size: 13.5px; color: var(--text-2); line-height: 1.8; margin-bottom: 20px; }
.solution-link { display: inline-flex; align-items: center; gap: 7px; font-size: 13px; font-weight: 500; color: var(--primary-dark); margin-top: auto; transition: gap 0.25s var(--ease), color 0.25s var(--ease); }
.solution-link:hover { gap: 12px; color: var(--primary-deep); }
.solution-link .ico { width: 14px; height: 14px; }

/* ============================================
   案例筛选
   ============================================ */
.cases-filter { display: flex; gap: 8px; margin-bottom: 36px; flex-wrap: wrap; }
.filter-btn {
  padding: 8px 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--r2);
  font-size: 13.5px; color: var(--text-2); cursor: pointer; transition: all 0.22s var(--ease);
}
.filter-btn:hover { border-color: var(--primary); color: var(--primary-dark); }
.filter-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.cases-list { display: grid; grid-template-columns: repeat(3, 1fr); grid-auto-rows: 1fr; gap: 24px; }
.case-card[hidden] { display: none; }

/* 弹窗 */
.modal { display: none; position: fixed; inset: 0; z-index: 2000; overflow-y: auto; }
.modal.active { display: flex; align-items: center; justify-content: center; }
.modal-overlay { position: absolute; inset: 0; background: rgba(8, 27, 48, 0.6); backdrop-filter: blur(3px); }
.modal-content {
  position: relative; background: #fff; border-radius: var(--r3);
  max-width: 720px; width: calc(100% - 40px); max-height: 90vh; overflow-y: auto;
  padding: 44px; margin: 24px auto;
}
.modal-close {
  position: absolute; top: 16px; right: 18px; width: 34px; height: 34px;
  display: grid; place-items: center; background: none; border: 1px solid var(--line);
  border-radius: var(--r2); font-size: 20px; color: var(--text-2); cursor: pointer; line-height: 1;
  transition: all 0.2s var(--ease);
}
.modal-close:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.modal-content.is-success { max-width: 460px; text-align: center; padding: 48px 44px; }
.modal-content.is-success .ico { width: 52px; height: 52px; color: var(--teal); margin: 0 auto 22px; }
.modal-content.is-success h3 { font-size: 22px; font-weight: 600; color: var(--ink); margin-bottom: 12px; }
.modal-content.is-success p { font-size: 14.5px; line-height: 1.9; color: var(--text-2); margin-bottom: 28px; }
.case-detail-header { padding-bottom: 24px; border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.case-detail-tag { display: inline-block; padding: 3px 10px; background: var(--teal-wash); color: var(--teal-deep); font-size: 11.5px; border-radius: var(--r1); margin-bottom: 12px; }
.case-detail-title { font-size: 24px; font-weight: 600; color: var(--ink); margin-bottom: 14px; letter-spacing: -0.01em; }
.case-detail-meta { display: flex; gap: 26px; font-size: 13px; color: var(--text-3); flex-wrap: wrap; }
.case-detail-section { margin-bottom: 28px; }
.case-detail-section h4 { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 12px; padding-left: 12px; border-left: 2px solid var(--teal); }
.case-detail-section p { font-size: 14px; color: var(--text-2); line-height: 1.9; }
.case-detail-list li { display: flex; gap: 10px; font-size: 14px; color: var(--text-2); margin-bottom: 8px; line-height: 1.7; }
.case-detail-list .ico { width: 15px; height: 15px; color: var(--teal); flex: none; margin-top: 4px; }
.case-detail-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.case-detail-stat { padding: 20px 14px; background: var(--bg-alt); border-radius: var(--r2); text-align: center; }
.case-detail-stat-number { font-family: var(--font-mono); font-size: 22px; font-weight: 500; color: var(--teal); }
.case-detail-stat-label { font-size: 12px; color: var(--text-3); margin-top: 4px; }

/* ============================================
   洞察与资源
   ============================================ */
.insights-hero { padding: 52px 56px; background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--r3); margin-bottom: 72px; }
.insights-intro { padding-bottom: var(--s9); }
.insights-intro .insights-hero { margin-bottom: 0; }
.insights-hero h2 { font-size: 28px; font-weight: 600; color: var(--ink); margin-bottom: 12px; letter-spacing: -0.01em; }
.insights-hero p { font-size: 15px; color: var(--text-2); max-width: 620px; }
.whitepapers-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; counter-reset: wpnum; }
.whitepaper-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--r3); background: #fff; display: flex; gap: 24px; transition: all 0.3s var(--ease); }
.whitepaper-card:hover { border-color: var(--ink); }
/* 白皮书图标 = VI 09「白皮书 / 报告封面」的缩微版：
   深空蓝页头 + VI 07 点阵（24px 网格 / 1.5px 圆点 / 白 10%）+ 反白图形 */
.whitepaper-icon {
  counter-increment: wpnum;
  width: 56px; height: 76px; display: grid; place-items: center; flex: none;
  padding-bottom: 14px;
  background-color: var(--ink-deep);
  background-image:
    linear-gradient(90deg, var(--teal) 6px, transparent 6px),
    radial-gradient(circle at 1.5px 1.5px, rgba(255, 255, 255, 0.10) 1.5px, transparent 1.6px);
  background-size: auto, 24px 24px;
  background-repeat: no-repeat, repeat;
  border-radius: var(--r2); color: #fff; position: relative; overflow: hidden;
}
/* VI 07 圆弧：取主标右侧曲率，线宽 1px / 透明度 ≤ 30%（青绿 28% / 政企蓝 22%），向右上线性淡出 */
.whitepaper-icon::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    radial-gradient(circle at 76px -26px, transparent 0 46px, rgba(31, 214, 193, 0.28) 46px 47px, transparent 47px),
    radial-gradient(circle at 76px -26px, transparent 0 64px, rgba(36, 115, 210, 0.22) 64px 65px, transparent 65px);
  -webkit-mask-image: linear-gradient(215deg, transparent 0%, #000 38%, #000 100%);
  mask-image: linear-gradient(215deg, transparent 0%, #000 38%, #000 100%);
}
/* VI 06 mono 编号，对应封面底部的 WP 索引（沿用站内 counter 用法） */
.whitepaper-icon::after {
  content: "WP·" counter(wpnum, decimal-leading-zero);
  position: absolute; left: 0; right: 0; bottom: 7px;
  font-family: var(--font-mono); font-size: 8px; letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.55); text-align: center;
}
.whitepaper-icon .ico { width: 24px; height: 24px; position: relative; z-index: 1; }
.whitepaper-content h3 { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 8px; line-height: 1.5; }
.whitepaper-content p { font-size: 13.5px; color: var(--text-2); margin-bottom: 12px; line-height: 1.75; }
.whitepaper-meta { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-3); margin-bottom: 16px; letter-spacing: 0.04em; }

.articles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: artnum; }
.article-card {
  border: 1px solid var(--line); border-radius: var(--r3); background: #fff; overflow: hidden; counter-increment: artnum;
  display: flex; flex-direction: column;
  transition: all 0.3s var(--ease);
}
.article-card:hover { border-color: var(--ink); transform: translateY(-3px); box-shadow: var(--shadow); }
.article-image {
  height: 96px; display: flex; align-items: center; gap: 14px; padding: 0 24px;
  background: var(--bg-alt); border-bottom: 1px solid var(--line); position: relative; overflow: hidden;
}
.article-image .ico { width: 30px; height: 30px; color: var(--ink); position: relative; z-index: 1; flex: none; order: 1; }
.article-image::before {
  content: counter(artnum, decimal-leading-zero);
  order: 2; margin-left: auto; position: relative; z-index: 1;
  font-family: var(--font-mono); font-size: 26px; color: rgba(14, 42, 71, 0.16); letter-spacing: 0.02em;
}
.article-content { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.article-tag { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--teal); display: block; margin-bottom: 10px; }
.article-title { font-size: 15.5px; font-weight: 600; color: var(--ink); margin-bottom: 8px; line-height: 1.6; }
.article-excerpt { font-size: 13.5px; color: var(--text-2); margin-bottom: 14px; }
.article-meta { font-family: var(--font-mono); font-size: 11.5px; color: var(--text-3); margin-top: auto; }

.faq-list { max-width: 820px; margin: 0 auto; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-question {
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  padding: 22px 4px; cursor: pointer; font-size: 15.5px; font-weight: 500; color: var(--ink);
  transition: color 0.2s var(--ease);
}
.faq-question:hover { color: var(--primary-dark); }
.faq-icon { position: relative; width: 14px; height: 14px; flex: none; }
.faq-icon::before, .faq-icon::after { content: ""; position: absolute; background: var(--text-3); transition: transform 0.3s var(--ease); }
.faq-icon::before { left: 0; top: 6.5px; width: 14px; height: 1.5px; }
.faq-icon::after { left: 6.5px; top: 0; width: 1.5px; height: 14px; }
.faq-item.active .faq-icon::after { transform: scaleY(0); }
.faq-item.active .faq-question { color: var(--primary-dark); }
.faq-answer { display: none; padding: 0 4px 26px; font-size: 14px; color: var(--text-2); line-height: 1.95; max-width: 720px; }
.faq-item.active .faq-answer { display: block; }

/* ============================================
   新闻
   ============================================ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; counter-reset: newsnum; }
.news-card { border: 1px solid var(--line); border-radius: var(--r3); background: #fff; overflow: hidden; counter-increment: newsnum; transition: all 0.3s var(--ease); }
.news-card:hover { border-color: var(--ink); transform: translateY(-3px); box-shadow: var(--shadow); }
.news-image {
  height: 96px; display: flex; align-items: center; gap: 14px; padding: 0 24px;
  background: var(--bg-alt); border-bottom: 1px solid var(--line); position: relative; overflow: hidden;
}
.news-image .ico { width: 30px; height: 30px; color: var(--ink); position: relative; z-index: 1; flex: none; order: 1; }
.news-image::before {
  content: counter(newsnum, decimal-leading-zero);
  order: 2; margin-left: auto; position: relative; z-index: 1;
  font-family: var(--font-mono); font-size: 26px; color: rgba(14, 42, 71, 0.16);
}
.news-content { padding: 24px; }
.news-date { font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.08em; color: var(--text-3); margin-bottom: 10px; }
.news-title { font-size: 15.5px; font-weight: 600; color: var(--ink); margin-bottom: 8px; line-height: 1.6; }
.news-excerpt { font-size: 13.5px; color: var(--text-2); line-height: 1.75; }
.pagination { display: flex; justify-content: center; gap: 6px; margin-top: 56px; }
.page-btn { min-width: 38px; height: 38px; padding: 0 12px; display: grid; place-items: center; background: #fff; border: 1px solid var(--line); border-radius: var(--r2); font-size: 13.5px; color: var(--text-2); cursor: pointer; transition: all 0.22s var(--ease); }
.page-btn:hover, .page-btn.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.pagination .ico { width: 15px; height: 15px; }
.page-btn-prev .ico { transform: rotate(180deg); }

/* ============================================
   联系
   ============================================ */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 56px; align-items: start; }
.contact-info { padding: 36px; background: var(--bg-alt); border: 1px solid var(--line); border-radius: var(--r3); }
.contact-info h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 28px; }
.contact-items { display: flex; flex-direction: column; gap: 24px; }
.contact-item { display: flex; gap: 14px; align-items: flex-start; }
.contact-icon { width: 20px; height: 20px; color: var(--teal); flex: none; margin-top: 3px; }
.contact-icon .ico { width: 20px; height: 20px; }
.contact-item h4 { font-size: 13px; font-weight: 600; color: var(--ink); margin-bottom: 3px; }
.contact-item p { font-size: 14px; color: var(--text-2); }
.contact-social { display: flex; gap: 8px; margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--line); }
.contact-form { padding: 40px; border: 1px solid var(--line); border-radius: var(--r3); background: #fff; }
.contact-form h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-label { display: block; font-size: 12.5px; font-weight: 500; color: var(--text-2); margin-bottom: 7px; letter-spacing: 0.02em; }
.form-label .req { color: var(--amber); margin-left: 3px; }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line); border-radius: var(--r2);
  font-size: 14px; background: var(--bg); transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.form-input:focus, .form-select:focus, .form-textarea:focus { outline: none; border-color: var(--primary); background: #fff; }
.form-input.invalid, .form-textarea.invalid { border-color: #C0392B; }
.form-error { font-size: 12px; color: #C0392B; margin-top: 5px; display: none; }
.form-group.has-error .form-error { display: block; }
.form-textarea { min-height: 110px; resize: vertical; }
.form-submit { width: 100%; padding: 13px; background: var(--primary); color: #fff; border: none; border-radius: var(--r2); font-size: 15px; font-weight: 500; cursor: pointer; transition: background 0.22s var(--ease); }
.form-submit:hover { background: var(--primary-dark); }
.form-note { font-size: 12px; color: var(--text-3); margin-top: 14px; text-align: center; }
.map-wrap { border: 1px solid var(--line); border-radius: var(--r3); overflow: hidden; background: #fff; }
.map-wrap [hidden] { display: none !important; }
.map-container { width: 100%; height: 420px; }
.map-fallback { min-height: 420px; display: grid; place-items: center; align-content: center; gap: 12px; padding: 32px; text-align: center; background: var(--bg-alt); color: var(--text-3); font-size: 13.5px; }
.map-fallback .ico { width: 28px; height: 28px; margin: 0 auto; color: var(--text-3); }
.map-fallback p { max-width: 520px; }
.map-address { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 20px 24px; background: #fff; border-top: 1px solid var(--line); }
.map-address h3 { font-size: 15px; font-weight: 600; color: var(--ink); margin-bottom: 4px; }
.map-address p { font-size: 13.5px; color: var(--text-2); }
.map-address .btn { flex: none; }
.map-info { min-width: 220px; max-width: 260px; padding: 4px 6px; font-family: var(--font); }
.map-info h4 { font-size: 14px; font-weight: 600; color: var(--ink); margin: 0 0 6px; }
.map-info p { font-size: 12.5px; line-height: 1.6; color: var(--text-2); margin: 0 0 8px; }
.map-info a { display: inline-flex; align-items: center; gap: 4px; font-size: 12.5px; color: var(--primary); }
.map-info a .ico { width: 12px; height: 12px; flex: none; }

/* ============================================
   动画
   ============================================ */
@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
.reveal { opacity: 0; }
.reveal.in { animation: fadeUp 0.65s var(--ease) forwards; }
@keyframes pulseDot { 0%, 100% { opacity: 1; } 50% { opacity: 0.35; } }

/* 返回顶部 */
.scroll-top {
  position: fixed; right: 28px; bottom: 28px; width: 44px; height: 44px; z-index: 900;
  display: grid; place-items: center; background: var(--ink); color: #fff; border: none;
  border-radius: var(--r2); cursor: pointer; opacity: 0; visibility: hidden;
  transition: all 0.3s var(--ease);
}
.scroll-top.show { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--primary); }
.scroll-top .ico { width: 18px; height: 18px; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1150px) {
  .navbar .nav-menu {
    display: none !important; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0; padding: 12px;
    background: #fff; border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
  }
  .navbar .nav-menu.active { display: flex !important; }
  .nav-item { border-bottom: 1px solid var(--line-2); }
  .nav-link { padding: 12px 4px; }
  .nav-link.active::after { display: none; }
  .nav-dropdown-menu { position: static; transform: none; opacity: 1; visibility: visible; box-shadow: none; border: none; padding: 0 0 8px 12px; min-width: 0; }
  .mobile-menu-btn { display: flex !important; margin-left: auto; }
  .nav-actions { display: none !important; }
}

@media (max-width: 1100px) {
  .hero-inner { grid-template-columns: 1fr; gap: 56px; }
  .hero-title { font-size: 42px; }
  .hero-panel { max-width: 560px; }
  .values-grid, .testimonials-grid, .cases-grid, .cases-list, .articles-grid, .news-grid, .solutions-grid { grid-template-columns: repeat(2, 1fr); }
  .services-grid, .advantages-grid, .team-grid, .certifications-grid { grid-template-columns: repeat(2, 1fr); }
  .service-card { padding: 30px 24px; }
  .service-card:nth-child(2n) { border-right: none; }
  .industries-grid { grid-template-columns: repeat(4, 1fr); }
  .partners-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(3, 1fr); gap: 36px; }
  .resources-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-intro, .service-detail, .solution-detail, .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .solution-detail:nth-of-type(even) .solution-detail-figure { order: 0; }
  .section-title { gap: 14px; }
  .section-subtitle { padding-left: 0; margin-bottom: 40px; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .hero { padding: 110px 0 72px; }
  .hero-title { font-size: 31px; }
  .hero-subtitle { font-size: 14.5px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { gap: 26px; flex-wrap: wrap; }
  .hero-stat-num { font-size: 23px; }
  .values-grid, .services-grid, .industries-grid, .advantages-grid, .testimonials-grid,
  .cases-grid, .cases-list, .team-grid, .certifications-grid, .partners-grid,
  .solutions-grid, .articles-grid, .news-grid, .whitepapers-grid { grid-template-columns: 1fr; }
  .services-grid .service-card { padding: 26px 0; border-right: none; }
  .biz-map .service-card:nth-last-child(n) { border-bottom: 1px solid var(--line); }
  .biz-map .service-card:last-child { border-bottom: none; }
  .industries-grid { grid-template-columns: repeat(3, 1fr); }
  .section-title { font-size: 23px; }
  .section-subtitle { font-size: 14px; }
  .resources-title, .cta-title { font-size: 23px; }
  .resources-form { flex-direction: column; }
  .resources-side { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { grid-template-columns: 1fr; justify-items: center; gap: 12px; text-align: center; }
  .footer-social { justify-self: center; }
  .page-title { font-size: 26px; }
  .insights-hero { padding: 32px 26px; }
  .whitepaper-card { flex-direction: column; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form, .contact-info { padding: 26px; }
  .map-container, .map-fallback { height: 320px; min-height: 320px; }
  .map-address { flex-direction: column; align-items: flex-start; gap: 14px; padding: 18px 20px; }
  .modal-content { padding: 30px 24px; }
  .case-detail-stats { grid-template-columns: repeat(2, 1fr); }
  .solution-stats { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .brand-logo { height: 40px; }
  .navbar.scrolled .brand-logo { height: 36px; }
  .footer-logo img { height: 44px; }
  .hero-title { font-size: 26px; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .scroll-top { right: 16px; bottom: 16px; }
}