/* CSS INLINE CRITICAL FALLBACK FOR STANDALONE / ZERO-DEPENDENCY FILE VIEWING */
/* ==========================================================================
   ZHANG JIEZHEN 2.0 INDUSTRIAL EDITORIAL MINIMALISM - 1:1 PIXEL-PERFECT REPLICA
   ========================================================================== */

:root {
  /* 品牌核心色彩 (默认 1:1 原画复刻模式: 暖石灰岩底色 + 深墨绿) */
  --preset-id: "original";
  --brand-green: #0E3B2E;
  --brand-green-hover: #08261d;
  --brand-green-subtle: #eef5f1;
  --brand-green-light: #2b654f;
  --brand-green-glow: rgba(14, 59, 46, 0.28);

  /* 工业暗色系（专刊模块） */
  --bg-dark-topic: #0B110F;
  --bg-dark-surface: #121A17;

  /* 页面底色与表面色 (暖石灰岩奶油色) */
  --bg-body: #F7F6F2;
  --bg-white: #FFFFFF;

  /* 高级文本排版色 */
  --text-main: #141C19;
  --text-secondary: #485450;
  --text-muted: #6B7571;

  /* 工程边框系统 */
  --border-light: #D9DDD9;
  --border-dark: rgba(255, 255, 255, 0.14);

  /* 哑光金/微光辅色 */
  --gold-accent: #C5973E;
  --gold-muted: #DFB25D;

  /* 字体族 */
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-serif: "Songti SC", "Noto Serif SC", SimSun, serif;

  /* 容器与圆角 */
  --container-max: 1220px;
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-pill: 9999px;
  
  /* 阴影 */
  --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 20px rgba(14, 59, 46, 0.07);
  --shadow-lg: 0 14px 36px rgba(16, 23, 22, 0.09);
}

/* 预设 2: 现代纯净白卡模式 (Clean White - 高明度纯白背景 + 冷灰科技边框) */
html[data-preset="clean-white"] {
  --preset-id: "clean-white";
  --bg-body: #F8FAFC;
  --bg-white: #FFFFFF;
  --brand-green: #0E4B38;
  --brand-green-hover: #083427;
  --brand-green-subtle: #EDF7F2;
  --brand-green-light: #1D6F54;
  --brand-green-glow: rgba(14, 75, 56, 0.25);

  --text-main: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;

  --border-light: #E2E8F0;
  --border-dark: rgba(255, 255, 255, 0.16);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05), 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 28px rgba(15, 23, 42, 0.08);
}

/* 预设 3: 大字总工汇报模式 (Executive Large - 全站字阶放大 15%, 宽舒间距大屏会审) */
html[data-preset="executive-large"] {
  --preset-id: "executive-large";
  --bg-body: #F4F3ED;
  --bg-white: #FFFFFF;
  --brand-green: #093326;
  --brand-green-hover: #052119;
  --brand-green-subtle: #E8F2EC;
  --brand-green-light: #1D5C45;
  --brand-green-glow: rgba(9, 51, 38, 0.32);

  --text-main: #0A1210;
  --text-secondary: #2B3833;
  --text-muted: #56635E;

  --border-light: #D0D4CD;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 24px rgba(9, 51, 38, 0.09);
  --shadow-lg: 0 16px 40px rgba(9, 51, 38, 0.12);

  /* 核心放大：HTML 根字阶提升 15% (16px * 1.15 = 18.4px) */
  font-size: 18.4px !important;
}
html[data-preset="executive-large"] body {
  line-height: 1.72 !important;
}
html[data-preset="executive-large"] .hero-headline {
  letter-spacing: -0.02em;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: clip;
}

body {
  background-color: var(--bg-body);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

picture {
  display: contents;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* 统一版心容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 28px;
}

/* SVG 图标通用基类 */
.svg-icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.15em;
  fill: currentColor;
  overflow: hidden;
  display: inline-block;
  flex-shrink: 0;
}

/* 统一工程眉标 (Eyebrow) */
.section-eyebrow {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-eyebrow .eyebrow-accent {
  color: var(--brand-green);
  font-weight: 850;
}
.section-eyebrow .eyebrow-divider {
  color: var(--border-light);
  font-weight: 400;
}
.section-eyebrow .eyebrow-sub {
  color: var(--text-muted);
  font-weight: 600;
}

/* 统一工业按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 40px;
  padding: 0 20px;
  font-size: 0.86rem;
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
  line-height: 1;
}
.btn-capsule {
  border-radius: var(--radius-pill);
}
.btn .btn-arrow {
  font-size: 0.85rem;
  transition: transform 0.2s ease;
}
.btn:hover .btn-arrow {
  transform: translateX(3px);
}
.btn-primary {
  background: var(--brand-green);
  color: #ffffff !important;
  border-color: var(--brand-green);
}
.btn-primary:hover {
  background: var(--brand-green-hover);
  border-color: var(--brand-green-hover);
  box-shadow: 0 4px 12px rgba(14, 59, 46, 0.25);
}
.btn-outline {
  background: #ffffff;
  color: var(--text-main);
  border-color: var(--border-light);
}
.btn-outline:hover {
  background: #fafafa;
  border-color: var(--text-main);
  color: var(--text-main);
}
.btn-gold {
  background: var(--gold-accent);
  color: #0f1513 !important;
  border-color: var(--gold-accent);
}
.btn-gold:hover {
  background: #b08432;
  border-color: #b08432;
  box-shadow: 0 4px 14px rgba(197, 151, 62, 0.35);
}


/* 极细顶栏装饰线与滚动进度条 */
.header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #315f78, #6aa0a4 45%, #c99638);
  z-index: 1001;
  pointer-events: none;
}

.scroll-progress-bar {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, #315f78 0%, #d4af37 100%);
  z-index: 1002;
  transition: width 0.08s linear;
  pointer-events: none;
}

/* 控制胶囊组件永久移除，恢复纯净典雅大厂官网风骨 */
.view-preset-switcher,
.drawer-preset-wrap,
.floating-view-panel,
.hero-mode-pill-toggle {
  display: none !important;
}

/* ==========================================================================
   01. HEADER 全站统一标准母版导航 (Master Nav · 与 about.html 1:1 像素级对齐)
   ========================================================================== */

.header {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  width: 100% !important;
  background: rgba(16, 32, 51, 0.88) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  z-index: 1000 !important;
  padding: 14px 0 !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
  box-sizing: border-box !important;
  transition: background-color 0.3s ease, box-shadow 0.3s ease !important;
}

.header .container {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  max-width: 1200px !important;
  margin: 0 auto !important;
  padding: 0 24px !important;
}

.navbar {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  width: 100% !important;
  position: relative !important;
  white-space: nowrap !important;
}

.logo {
  display: inline-flex !important;
  align-items: center !important;
  gap: 8px !important;
  text-decoration: none !important;
  white-space: nowrap !important;
  font-family: 'Source Serif Pro', serif, 'PingFang SC', 'Microsoft YaHei' !important;
  transition: transform 0.3s ease !important;
}
.logo:hover {
  transform: translateY(-1px);
}

.logo-title {
  display: inline-flex !important;
  align-items: center !important;
  font-family: 'Source Serif Pro', serif, 'PingFang SC', 'Microsoft YaHei' !important;
  font-size: 21.75px !important;
  font-weight: 700 !important;
  color: #ffffff !important;
  white-space: nowrap !important;
  letter-spacing: 0.5px !important;
  line-height: 1.6 !important;
}

.logo-title span {
  color: #d4af37 !important;
}

.logo-subtitle {
  display: none !important;
  font-family: 'Source Serif Pro', serif, 'PingFang SC', 'Microsoft YaHei' !important;
  font-size: 12.3px !important;
  font-weight: 400 !important;
  color: rgba(255, 255, 255, 0.75) !important;
  border-left: 1px solid rgba(255, 255, 255, 0.2) !important;
  padding-left: 10px !important;
  margin-left: 8px !important;
  letter-spacing: 0.7px !important;
  line-height: 1.6 !important;
  white-space: nowrap !important;
}

@media (min-width: 768px) {
  .logo-subtitle {
    display: block !important;
  }
}

@media (min-width: 992px) {
  .nav-menu {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    list-style: none !important;
    gap: 28px !important;
    margin: 0 !important;
    padding: 0 !important;
    white-space: nowrap !important;
  }
}

@media (min-width: 992px) and (max-width: 1140px) {
  .nav-menu {
    gap: 14px !important;
  }
  .header .nav-menu > .nav-item > .nav-link {
    padding: 7.5px 9px !important;
    font-size: 13.8px !important;
  }
}

.nav-item {
  position: relative !important;
  display: inline-flex !important;
  align-items: center !important;
  list-style: none !important;
  margin: 0 !important;
  padding: 0 !important;
}

.header .nav-link {
  font-family: 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif !important;
  color: rgba(255, 255, 255, 0.88) !important;
  text-decoration: none !important;
  font-size: 14.4px !important;
  font-weight: 500 !important;
  padding: 7.5px 15px !important;
  line-height: 1.6 !important;
  position: relative !important;
  display: inline-flex !important;
  align-items: center !important;
  transition: all 0.3s ease !important;
  white-space: nowrap !important;
}

.header .nav-link:hover,
.header .nav-link.active {
  color: #d4af37 !important;
}

.header .nav-link::after {
  display: none !important;
  content: none !important;
}

.header .nav-link.active::after {
  content: '' !important;
  position: absolute !important;
  bottom: -2px !important;
  left: 50% !important;
  transform: translateX(-50%) !important;
  width: 22px !important;
  height: 3px !important;
  background: linear-gradient(90deg, #f59e0b, #d4af37) !important;
  border-radius: 2px !important;
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.85) !important;
  opacity: 1 !important;
  display: block !important;
}

/* 二级下拉菜单 (Master Dropdown Menu) */
.nav-dropdown {
  position: relative !important;
}
.nav-dropdown-toggle {
  display: inline-flex !important;
  align-items: center !important;
  gap: 5px !important;
  cursor: pointer !important;
}
.nav-dropdown-icon {
  width: 10.8px !important;
  height: 10.8px !important;
  font-size: 10.8px !important;
  margin-left: 2px !important;
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
  display: inline-block !important;
  vertical-align: middle !important;
  opacity: 0.8 !important;
  fill: currentColor !important;
}
.nav-dropdown:hover .nav-dropdown-icon {
  transform: rotate(180deg) !important;
  opacity: 1 !important;
}
.nav-dropdown .dropdown-menu {
  position: absolute !important;
  top: 100% !important;
  left: 50% !important;
  transform: translateX(-50%) translateY(8px) !important;
  background: #ffffff !important;
  min-width: 236px !important;
  border-radius: 12px !important;
  padding: 8px 0 !important;
  margin: 0 !important;
  list-style: none !important;
  list-style-type: none !important;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.14), 0 4px 12px rgba(0, 0, 0, 0.04) !important;
  border: 1px solid rgba(226, 232, 240, 0.95) !important;
  opacity: 0 !important;
  visibility: hidden !important;
  pointer-events: none !important;
  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1), transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.2s !important;
  z-index: 10005 !important;
}
.nav-dropdown .dropdown-menu::before {
  content: "" !important;
  position: absolute !important;
  top: -12px !important;
  left: 0 !important;
  right: 0 !important;
  height: 12px !important;
  background: transparent !important;
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: auto !important;
  transform: translateX(-50%) translateY(0) !important;
}
.nav-dropdown .dropdown-menu li {
  list-style: none !important;
  list-style-type: none !important;
  margin: 0 !important;
  padding: 0 !important;
  display: block !important;
}
.nav-dropdown .dropdown-menu li::before {
  display: none !important;
  content: none !important;
}
.nav-dropdown .dropdown-menu li a {
  display: flex !important;
  align-items: center !important;
  gap: 12px !important;
  padding: 10px 20px !important;
  color: #1e293b !important;
  font-size: 13.8px !important;
  font-weight: 500 !important;
  text-decoration: none !important;
  white-space: nowrap !important;
  transition: all 0.18s ease !important;
  background: transparent !important;
  border-radius: 0 !important;
}
.nav-dropdown .dropdown-menu li a i,
.nav-dropdown .dropdown-menu li a .nav-fa-svg {
  color: #b48a2c !important;
  fill: currentColor !important;
  font-size: 15px !important;
  width: 16px !important;
  height: 15px !important;
  min-width: 20px !important;
  text-align: center !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  flex-shrink: 0 !important;
  font-style: normal !important;
}
.nav-dropdown .dropdown-menu li a:hover {
  background-color: #f8fafc !important;
  color: #b48a2c !important;
  padding-left: 24px !important;
}

/* 顶部右侧胶囊“咨询我”按钮 */
.nav-contact-btn {
  display: inline-flex !important;
  align-items: center !important;
  gap: 6px !important;
  padding: 8px 20px !important;
  border-radius: 999px !important;
  background: rgba(255, 255, 255, 0.12) !important;
  border: 1px solid rgba(255, 255, 255, 0.25) !important;
  color: #ffffff !important;
  text-decoration: none !important;
  font-family: 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Microsoft YaHei', sans-serif !important;
  font-size: 13.5px !important;
  font-weight: 600 !important;
  line-height: 1.6 !important;
  transition: all 0.3s ease !important;
  white-space: nowrap !important;
}
.nav-contact-btn i,
.nav-contact-btn .nav-fa-svg,
.mobile-nav-contact-btn .nav-fa-svg {
  width: 13px !important;
  height: 13px !important;
  font-size: 12px !important;
  fill: currentColor !important;
  vertical-align: -1.5px !important;
  flex-shrink: 0 !important;
}
.nav-contact-btn:hover {
  background: #d4af37 !important;
  color: #102033 !important;
  border-color: #d4af37 !important;
}

/* 全站移动端侧滑导航唯一权威规范 */
@media (min-width: 992px) {
  .mobile-nav-toggle,
  button.mobile-nav-toggle,
  .header .mobile-nav-toggle,
  .mobile-nav-wrapper,
  .mobile-nav,
  .mobile-nav-backdrop {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
    opacity: 0 !important;
  }
}

@media (max-width: 991px) {
  body.mobile-nav-active {
    overflow: hidden !important;
  }
  .header,
  .header .container,
  .navbar {
    max-width: 100vw !important;
    box-sizing: border-box !important;
  }
  .header .container {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }
  .nav-menu {
    display: none !important;
  }
  body .header .navbar .mobile-nav-toggle,
  .mobile-nav-toggle,
  button.mobile-nav-toggle,
  .header .mobile-nav-toggle {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    position: relative !important;
    margin-left: auto !important;
    flex-shrink: 0 !important;
    width: 42px !important;
    height: 42px !important;
    padding: 0 !important;
    border-radius: 8px !important;
    background: rgba(255, 255, 255, 0.12) !important;
    border: 1px solid rgba(255, 255, 255, 0.24) !important;
    color: #ffffff !important;
    box-shadow: none !important;
    visibility: visible !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    cursor: pointer !important;
    z-index: 1001 !important;
  }
  body.mobile-nav-active .header .navbar .mobile-nav-toggle,
  body.mobile-nav-active .mobile-nav-toggle {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
  }
  .mobile-nav-wrapper {
    display: block !important;
    position: fixed !important;
    inset: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    height: 100dvh !important;
    z-index: 10000 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    overflow: hidden !important;
    transition: visibility 0s linear 0.3s !important;
  }
  body.mobile-nav-active .mobile-nav-wrapper,
  .mobile-nav-wrapper.active {
    visibility: visible !important;
    pointer-events: auto !important;
    transition-delay: 0s !important;
  }
  .mobile-nav-backdrop {
    display: block !important;
    position: fixed !important;
    inset: 0 !important;
    width: 100% !important;
    height: 100% !important;
    background: rgba(15, 23, 42, 0.55) !important;
    backdrop-filter: blur(2px) !important;
    -webkit-backdrop-filter: blur(2px) !important;
    opacity: 0 !important;
    pointer-events: none !important;
    transition: opacity 0.28s ease !important;
    z-index: 10000 !important;
  }
  body.mobile-nav-active .mobile-nav-backdrop,
  .mobile-nav-wrapper.active .mobile-nav-backdrop {
    opacity: 1 !important;
    pointer-events: auto !important;
  }
  .mobile-nav {
    display: flex !important;
    flex-direction: column !important;
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    width: 300px !important;
    max-width: 82vw !important;
    height: 100vh !important;
    height: 100dvh !important;
    background: #ffffff !important;
    padding: 68px 24px 32px !important;
    box-sizing: border-box !important;
    transform: translateX(100%) !important;
    transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
    z-index: 10001 !important;
    box-shadow: -8px 0 30px rgba(15, 23, 42, 0.18) !important;
    visibility: visible !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
  }
  body.mobile-nav-active .mobile-nav,
  .mobile-nav-wrapper.active .mobile-nav,
  .mobile-nav.active {
    transform: translateX(0) !important;
  }
  .close-mobile-nav {
    position: absolute !important;
    top: 16px !important;
    right: 16px !important;
    width: 40px !important;
    height: 40px !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    background: #f1f5f9 !important;
    color: #1e293b !important;
    border: 1px solid #e2e8f0 !important;
    border-radius: 50% !important;
    cursor: pointer !important;
    z-index: 10002 !important;
    padding: 0 !important;
  }
  .close-mobile-nav:hover {
    background: #e2e8f0 !important;
  }
  .mobile-nav ul {
    list-style: none !important;
    margin: 0 !important;
    padding: 0 !important;
    width: 100% !important;
  }
  .mobile-nav li {
    margin: 0 0 4px 0 !important;
    list-style: none !important;
  }
  .mobile-nav a:not(.mobile-nav-contact-btn) {
    display: flex !important;
    align-items: center !important;
    padding: 12px 10px !important;
    font-size: 1.05rem !important;
    font-weight: 600 !important;
    color: #1e293b !important;
    text-decoration: none !important;
    border-bottom: 1px solid #f1f5f9 !important;
    border-radius: 6px !important;
    transition: background 0.2s ease, color 0.2s ease !important;
  }
  .mobile-nav a:not(.mobile-nav-contact-btn):hover,
  .mobile-nav a:not(.mobile-nav-contact-btn).active {
    color: #b48a2c !important;
    background: #f8fafc !important;
  }
}

@media (max-width: 374px) {
  .logo-subtitle {
    font-size: 11.5px !important;
    padding-left: 6px !important;
    margin-left: 6px !important;
  }
}


/* ==========================================================================
   02. HERO 首屏主视觉 (43% : 57% 黄金分割 · 预留 69px 顶部固定导航安全高度)
   ========================================================================== */

.hero-section {
  padding: 120px 0 56px;
  background: var(--bg-body);
  border-bottom: 1px solid var(--border-light);
  position: relative;
}
.hero-container {
  display: grid;
  grid-template-columns: minmax(0, 0.51fr) minmax(0, 0.49fr);
  gap: 36px;
  align-items: center;
}

.hero-left-col {
  padding-right: 8px;
}
.hero-headline {
  font-size: clamp(1.78rem, 2.3vw, 2.25rem); /* 桌面端 36px ~ 42px，16字单行磅礴呈现 */
  font-weight: 900;
  color: var(--text-main);
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin: 0 0 18px;
  white-space: nowrap;
}
.headline-highlight {
  color: var(--brand-green);
  display: inline-block;
}
.hero-subtext {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.78;
  margin-bottom: 24px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  flex-wrap: wrap;
}

/* Hero 右侧图像舞台与 4 个 HUD 磨砂玻璃卡片 */
.hero-right-stage {
  position: relative;
}
.hero-img-wrapper {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  background: #0B110F;
  aspect-ratio: 16 / 9;
}
.hero-main-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 右上角叠加 4 个纵向 HUD 工程数据节点卡片 */
.hero-hud-nodes {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 5;
}
.hud-node-card {
  background: rgba(11, 17, 15, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 10px;
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  cursor: default;
}
.hud-node-card:hover {
  transform: translateX(-5px) scale(1.02);
  background: rgba(14, 59, 46, 0.92);
  border-color: var(--gold-accent);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.45), 0 0 14px rgba(197, 151, 62, 0.3);
}
.hud-node-icon {
  color: var(--gold-muted);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
}
.hud-node-text {
  display: flex;
  flex-direction: column;
}
.hud-node-zh {
  font-size: 0.74rem;
  font-weight: 750;
  display: block;
  line-height: 1.1;
  color: #ffffff;
}
.hud-node-en {
  font-size: 0.54rem;
  color: rgba(255, 255, 255, 0.62);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  margin-top: 1px;
  white-space: nowrap;
}

/* 全宽贯穿模式背景容器 (默认隐藏，full 模式下激活展示) */
/* ==================== 02. 首屏 Hero 横幅区 (经典左右平衡对称极清 16:9 展台) ==================== */
.hero-section {
  min-height: auto;
  padding: 120px 0 56px;
  background: var(--bg-body);
  border-bottom: 1px solid var(--border-light);
  position: relative;
}
.hero-pano-backdrop {
  display: none !important;
}
.hero-container {
  display: grid;
  grid-template-columns: minmax(0, 0.51fr) minmax(0, 0.49fr);
  gap: 36px;
  align-items: center;
}
.hero-headline {
  font-size: clamp(1.78rem, 2.3vw, 2.25rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin: 0 0 18px;
  white-space: nowrap;
}
.headline-prefix {
  color: var(--text-main);
  text-shadow: none;
}
.headline-highlight {
  color: var(--brand-green);
  text-shadow: none;
}
.hero-subtext {
  color: var(--text-secondary);
  text-shadow: none;
  max-width: 540px;
}
.hero-right-stage .hero-img-wrapper {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.14);
  background: #0B110F;
  aspect-ratio: 16 / 9 !important;
  width: 100%;
}
.hero-right-stage .hero-main-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block !important;
  filter: brightness(0.98) contrast(1.04);
}
.hero-hud-nodes {
  position: absolute !important;
  top: 12px !important;
  right: 12px !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: stretch !important;
  gap: 6px !important;
  z-index: 5 !important;
}
.hud-node-card {
  background: rgba(11, 17, 15, 0.82) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(255, 255, 255, 0.18) !important;
  padding: 6px 12px !important;
  border-radius: var(--radius-sm) !important;
  display: flex !important;
  align-items: center !important;
  gap: 9px !important;
  color: #ffffff !important;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35) !important;
  min-width: 156px !important;
  width: 100% !important;
}


/* ==========================================================================
   02.5 MOBILE BENCHMARK QUICK BAR (仅在移动端呈现，秒级见证真实工程证据)
   ========================================================================== */
.mobile-benchmark-bar {
  display: none;
}
@media (max-width: 768px) {
  .mobile-benchmark-bar {
    display: block;
    background: #0E3B2E;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    padding: 9px 0;
  }
  .benchmark-bar-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    text-decoration: none;
    color: #ffffff;
    font-size: 0.76rem;
  }
  .benchmark-tag {
    background: #C5973E;
    color: #0B110F;
    font-size: 0.68rem;
    font-weight: 800;
    padding: 2px 6px;
    border-radius: 3px;
    flex-shrink: 0;
  }
  .benchmark-text {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #f1f5f9;
  }
  .benchmark-arrow {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 0.72rem;
    font-weight: 700;
    color: #34d399;
    flex-shrink: 0;
  }
  .benchmark-arrow .svg-tiny-arrow {
    width: 10px;
    height: 10px;
  }
}

/* ==========================================================================
   03. DATA METRICS 核心数据证明 (4 列横向，白底，指标证据链闭环)
   ========================================================================== */

.metrics-section {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
  padding: 26px 0;
}
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.metric-cell {
  display: flex;
  align-items: center;
  gap: 14px;
  border-right: 1px solid var(--border-light);
  padding-right: 16px;
}
.metric-cell:last-child {
  border-right: none;
  padding-right: 0;
}
.metric-cell-link {
  text-decoration: none;
  color: inherit;
  border-radius: var(--radius-sm);
  padding: 8px 12px 8px 8px;
  margin: -8px -12px -8px -8px;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
}
.metric-cell-link:hover {
  background: rgba(14, 59, 46, 0.05);
  transform: translateY(-2px);
}
.metric-cell-link:hover .metric-icon-box {
  background: var(--brand-green);
  color: #ffffff;
  border-color: var(--brand-green);
}
.metric-action-hint {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--accent-gold);
  margin-top: 5px;
  line-height: 1;
  transition: all 0.2s ease;
}
.metric-action-hint .svg-tiny-arrow {
  width: 10px;
  height: 10px;
  transition: transform 0.2s ease;
}
.metric-cell-link:hover .metric-action-hint {
  color: var(--brand-green);
}
.metric-cell-link:hover .metric-action-hint .svg-tiny-arrow {
  transform: translateX(3px);
}
.metric-icon-box {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--bg-body);
  border: 1px solid var(--border-light);
  color: var(--brand-green);
  display: grid;
  place-items: center;
  font-size: 1.15rem;
  flex-shrink: 0;
  transition: all 0.2s ease;
}
.metric-content {
  display: flex;
  flex-direction: column;
}
.metric-value {
  font-size: clamp(1.95rem, 2.4vw, 2.35rem);
  font-weight: 850;
  color: var(--text-main);
  line-height: 1;
  margin-bottom: 4px;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
  display: flex;
  align-items: baseline;
  white-space: nowrap;
}
.metric-prefix {
  font-size: 0.82em;
  font-weight: 800;
  margin-right: 2px;
  color: var(--brand-green);
}
.metric-unit {
  font-size: 0.50em;
  font-weight: 700;
  margin-left: 3px;
  color: var(--text-secondary);
  letter-spacing: 0;
}
.metric-title {
  font-size: 0.84rem;
  font-weight: 750;
  color: var(--text-main);
  display: block;
  line-height: 1.25;
}
.metric-en {
  font-size: 0.62rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  display: block;
  margin-top: 3px;
  line-height: 1.35;
}


/* ==========================================================================
   04. ABOUT 专家介绍 (3 栏横向结构，暖白底)
   ========================================================================== */

.about-section {
  padding: 46px 0;
  background: var(--bg-body);
  border-bottom: 1px solid var(--border-light);
}
.about-grid {
  display: grid;
  grid-template-columns: 1.35fr 195px 1.25fr;
  gap: 32px;
  align-items: center;
}

/* 左栏说明与团队背书卡 (左右对称黄金比例调校) */
.about-left-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.about-title {
  font-size: clamp(1.35rem, 1.7vw, 1.6rem);
  font-weight: 850;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
  white-space: nowrap;
}
.about-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 8px;
}

/* 权威实体机构与项目协同背书卡 (紧凑高度匹配肖像与右栏) */
.team-credentials-badge {
  margin-top: 6px;
  background: var(--bg-card, #ffffff);
  border: 1px solid var(--border-light, #e2e8f0);
  border-radius: var(--radius-sm, 6px);
  padding: 8px 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}
.cred-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.cred-item:not(:last-child) {
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--border-light, #e2e8f0);
}
.cred-icon-box {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  background: rgba(14, 59, 46, 0.06);
  color: var(--brand-green);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.cred-icon-box .svg-icon {
  width: 13px;
  height: 13px;
}
.cred-body {
  flex: 1;
  min-width: 0;
}
.cred-entity-line {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.cred-name {
  font-size: 0.84rem;
  font-weight: 750;
  color: var(--text-main);
  line-height: 1.3;
}
.cred-lead {
  font-size: 0.86rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
}
.cred-lead-title {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--brand-green);
  line-height: 1.3;
}
.cred-tag {
  font-size: 0.60rem;
  font-weight: 600;
  color: var(--brand-green);
  background: rgba(14, 59, 46, 0.08);
  padding: 1px 5px;
  border-radius: 3px;
  white-space: nowrap;
}
.cred-tag-gold {
  color: #92400e;
  background: rgba(180, 138, 44, 0.12);
}
.cred-sub {
  font-size: 0.70rem;
  color: var(--text-muted);
  line-height: 1.35;
  margin-top: 2px;
}

/* 毛笔手写签名与朱砂方印组合 (保留兼容) */
.about-signature-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 14px;
  flex-wrap: nowrap;
}
.signature-figure-block {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.handwritten-signature-img {
  width: 165px;
  height: auto;
  max-height: 48px;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.08));
  transition: transform 0.2s ease;
}
.handwritten-signature-img:hover {
  transform: scale(1.02);
}
.chinese-seal-stamp {
  width: 32px;
  height: 32px;
  border: 1.8px solid #b91c1c;
  color: #b91c1c;
  background: rgba(185, 28, 28, 0.05);
  border-radius: 3px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: 9.5px;
  line-height: 1.05;
  box-shadow: 0 1px 3px rgba(185, 28, 28, 0.15);
  transform: rotate(-3deg);
  user-select: none;
  flex-shrink: 0;
}
.seal-text-top, .seal-text-bottom {
  letter-spacing: 0.04em;
}
.signature-meta-divider {
  width: 1px;
  height: 28px;
  background: var(--border-light);
  flex-shrink: 0;
}
.signature-meta-block {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}
.signature-name {
  font-size: 1.08rem;
  font-weight: 850;
  color: var(--text-main);
  line-height: 1.2;
  letter-spacing: 0.02em;
}
.signature-title {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  line-height: 1.35;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* 中栏专家肖像 */
.about-portrait-frame {
  width: 200px;
  height: 250px;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #ffffff;
  box-shadow: var(--shadow-sm);
  margin: 0 auto;
}
.about-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  display: block;
}

/* 右栏三步赋能法 */
.about-right-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.cap-step-card {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-light);
}
.cap-step-card:last-child {
  padding-bottom: 0;
  border-bottom: none;
}
.cap-step-num {
  font-size: 1.35rem;
  font-weight: 850;
  color: var(--brand-green);
  line-height: 1;
  width: 28px;
  flex-shrink: 0;
}
.cap-step-body {
  flex-grow: 1;
}
.cap-step-title {
  font-size: 0.96rem;
  font-weight: 800;
  margin-bottom: 4px;
  color: var(--text-main);
}
.cap-step-desc {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.62;
  margin: 0;
}
.cap-step-icon {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-left: auto;
  flex-shrink: 0;
  padding-top: 2px;
}


/* ==========================================================================
   05. CORE BUSINESS & TECHNICAL FOUNDATION (两层化架构 · 3大工程主线 + 3大技术底座 + 立项对接指引)
   ========================================================================== */

.business-section {
  padding: 46px 0 54px;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
}

.business-section-header {
  margin: 10px 0 24px;
}
.business-main-heading {
  font-size: clamp(1.4rem, 2.2vw, 1.85rem);
  font-weight: 850;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.business-sub-heading {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
  max-width: 840px;
  margin: 0;
}

/* Tier 1: 三大工程主线 (3 列黄金网格) */
.biz-core-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-bottom: 36px;
}
.biz-core-card {
  background: var(--bg-body);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 20px 20px 18px;
  display: flex;
  flex-direction: column;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease, background 0.2s ease;
}
.biz-core-card:hover {
  background: #ffffff;
  border-color: rgba(14, 59, 46, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 14px 32px rgba(14, 59, 46, 0.10), 0 0 0 1px rgba(14, 59, 46, 0.15);
}
.biz-core-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}
.biz-core-no {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--brand-green);
  line-height: 1;
}
.biz-core-badge {
  font-size: 0.72rem;
  font-weight: 750;
  color: #0E3B2E;
  background: rgba(14, 59, 46, 0.08);
  border: 1px solid rgba(14, 59, 46, 0.16);
  padding: 3px 8px;
  border-radius: var(--radius-pill);
}
.biz-core-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 12px;
}
.biz-core-thumb {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-xs);
  overflow: hidden;
  margin-bottom: 14px;
  border: 1px solid rgba(0, 0, 0, 0.08);
}
.biz-core-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}
.biz-core-card:hover .biz-core-thumb img {
  transform: scale(1.04);
}
.biz-core-specs {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
  flex: 1;
}
.biz-spec-row {
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: rgba(0, 0, 0, 0.02);
  border-radius: 4px;
  padding: 6px 8px;
  border-left: 2px solid var(--brand-green);
}
.biz-spec-label {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--brand-green);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.biz-spec-val {
  font-size: 0.82rem;
  color: var(--text-main);
  line-height: 1.45;
}
.biz-core-cta {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(14, 59, 46, 0.06);
  border: 1px solid rgba(14, 59, 46, 0.2);
  border-radius: 6px;
  font-size: 0.84rem;
  font-weight: 750;
  color: var(--brand-green);
  text-decoration: none;
  transition: all 0.2s ease;
  margin-top: auto;
}
.biz-core-cta .svg-arrow {
  width: 14px;
  height: 14px;
  transition: transform 0.2s ease;
}
.biz-core-card:hover .biz-core-cta {
  background: var(--brand-green);
  color: #ffffff;
  border-color: var(--brand-green);
}
.biz-core-card:hover .biz-core-cta .svg-arrow {
  transform: translateX(4px);
}

/* Tier 2: 三大技术配套底座 (横向支撑网格) */
.biz-support-section {
  background: #f8fafc;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 24px 24px 22px;
  margin-bottom: 28px;
}
.biz-support-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}
.biz-support-kicker {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--accent-gold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 2px;
}
.biz-support-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
  margin: 0;
}
.biz-support-sub {
  font-size: 0.84rem;
  color: var(--text-secondary);
  line-height: 1.4;
  margin: 0;
}
.biz-support-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.biz-support-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xs);
  padding: 16px;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
.biz-support-card:hover {
  border-color: var(--brand-green);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(14, 59, 46, 0.08);
}
.biz-support-top {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 6px;
}
.biz-support-no {
  font-size: 1.05rem;
  font-weight: 900;
  color: var(--brand-green);
}
.biz-support-name {
  font-size: 0.94rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.3;
  margin: 0;
}
.biz-support-desc {
  font-size: 0.80rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 10px;
  flex: 1;
}
.biz-support-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}
.biz-support-tags span {
  font-size: 0.68rem;
  font-weight: 650;
  color: var(--text-secondary);
  background: rgba(0, 0, 0, 0.04);
  padding: 2px 7px;
  border-radius: 4px;
}
.biz-support-card:hover .biz-support-tags span {
  background: rgba(14, 59, 46, 0.08);
  color: var(--brand-green);
}

/* Tier 3: 矿井立项初步对接指引与自测入口 */
.biz-consultation-banner {
  background: linear-gradient(135deg, #0B110F 0%, #13241e 100%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 24px;
  align-items: center;
  color: #ffffff;
}
.consultation-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  color: #C5973E;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.consultation-title {
  font-size: 1.25rem;
  font-weight: 850;
  color: #ffffff;
  margin-bottom: 14px;
}
.consultation-flow-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.consult-label {
  font-size: 0.78rem;
  font-weight: 750;
  color: #34d399;
  margin-bottom: 5px;
  display: block;
}
.consult-text {
  font-size: 0.82rem;
  color: #cbd5e1;
  line-height: 1.55;
  margin: 0;
}
.consultation-banner-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: center;
}
.consultation-btn {
  width: 100%;
  justify-content: center;
  padding: 13px 22px;
  font-size: 0.92rem;
}
.consultation-note {
  font-size: 0.74rem;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 8px;
}

/* 保留旧类名兼容 */
.business-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
  margin-top: 22px;
}
.biz-card {
  background: var(--bg-body);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 14px 10px 16px;
  display: flex;
  flex-direction: column;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.28s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease, background 0.2s ease;
}
.biz-card:hover {
  border-color: rgba(14, 59, 46, 0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(14, 59, 46, 0.12), 0 0 0 1px rgba(14, 59, 46, 0.2);
  background: #ffffff;
}
.biz-card-no {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--brand-green);
  margin-bottom: 6px;
  line-height: 1;
}
.biz-card-title {
  font-size: 0.90rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.32;
  min-height: 38px;
  margin-bottom: 10px;
}
.biz-card-thumb {
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-xs);
  overflow: hidden;
  background: #e2e8f0;
  margin-bottom: 10px;
  border: 1px solid rgba(0,0,0,0.06);
}
.biz-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}
.biz-card:hover .biz-card-thumb img {
  transform: scale(1.05);
}
.biz-tags {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: auto;
  list-style: none;
  padding: 0;
}
.biz-tags li {
  font-size: 0.68rem;
  font-weight: 650;
  color: var(--text-secondary);
  background: rgba(14, 59, 46, 0.05);
  border: 1px solid rgba(14, 59, 46, 0.12);
  border-radius: var(--radius-pill);
  padding: 3px 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  transition: all 0.2s ease;
  line-height: 1.25;
}
.biz-tags li::before {
  content: none !important;
  display: none !important;
}
.biz-card:hover .biz-tags li {
  background: rgba(14, 59, 46, 0.09);
  color: var(--brand-green);
  border-color: rgba(14, 59, 46, 0.28);
}


/* ==========================================================================
   06. SPECIAL TOPIC 采空区治理工程专刊 (深黑墨绿底色 · 沉浸式)
   ========================================================================== */

.special-topic-section {
  background: var(--bg-dark-topic);
  color: #ffffff;
  padding: 44px 0 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
}
.topic-header-flex {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 24px;
}
.topic-header-left {
  flex: 1 1 auto;
  min-width: 0;
}
.topic-kicker {
  color: var(--gold-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 8px;
}
.topic-title {
  color: #ffffff;
  font-size: clamp(1.95rem, 2.5vw, 2.15rem);
  font-weight: 850;
  line-height: 1.25;
  white-space: nowrap;
  margin-bottom: 8px;
  letter-spacing: -0.015em;
  text-shadow: 0 0 24px rgba(255, 255, 255, 0.28), 0 2px 10px rgba(0, 0, 0, 0.5);
}
.topic-header-right {
  flex-shrink: 0;
  margin-bottom: 4px;
}
.topic-issue {
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.1em;
}

/* 顶部 4 步工序条 */
.topic-steps-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  background: var(--bg-dark-surface);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin: 0 auto 18px;
  max-width: 960px;
}
.topic-step-item {
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  padding-right: 10px;
}
.topic-step-item:last-child {
  border-right: none;
  padding-right: 0;
}
.step-label {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--gold-muted);
  margin-bottom: 2px;
  display: block;
}
.step-desc {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.65);
  margin: 0;
  line-height: 1.45;
}

/* 核心工程全景剖面图容器 (居中紧凑黄金比例) */
.topic-image-frame {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: #000000;
  margin: 0 auto 18px;
  max-width: 960px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.7);
}
.topic-image-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  box-shadow: inset 0 0 45px rgba(0, 0, 0, 0.75), inset 0 2px 8px rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
}
.topic-cutaway-img {
  width: 100%;
  height: auto;
  display: block;
}

/* 底部 6 步细线工程链条 */
.topic-pipeline-chain {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-sm);
  max-width: 960px;
  margin: 0 auto;
}
.pipeline-node {
  font-size: 0.78rem;
  font-weight: 650;
  color: rgba(255, 255, 255, 0.85);
  display: flex;
  align-items: center;
  gap: 10px;
}
.pipeline-node .arrow {
  color: var(--gold-muted);
  font-size: 0.72rem;
}


/* ==========================================================================
   07. MATERIAL PASSPORT 材料护照 (蓝图点阵网格与能量流动美学重塑)
   ========================================================================== */

.passport-section {
  padding: 56px 0;
  background-color: #F8F9FA;
  background-image: 
    radial-gradient(rgba(14, 59, 46, 0.09) 1.2px, transparent 1.2px),
    radial-gradient(rgba(197, 151, 62, 0.06) 1px, transparent 1px);
  background-size: 24px 24px, 48px 48px;
  background-position: 0 0, 12px 12px;
  border-bottom: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}
.passport-header-flex {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 30px;
  margin-bottom: 12px;
}
.passport-title {
  font-size: clamp(1.95rem, 2.5vw, 2.125rem);
  font-weight: 850;
  color: var(--text-main);
  line-height: 1.25;
  margin: 0;
  letter-spacing: -0.02em;
}
.passport-desc {
  max-width: none;
  white-space: nowrap;
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0 0 3px 0;
}
@media (max-width: 991px) {
  .passport-desc {
    white-space: normal;
  }
}

/* 贯通流动能量脉冲导轨 (单轨能量光带与绝对垂向卡片中心对齐) */
.passport-track-container {
  position: relative;
  height: 20px;
  margin: 18px 0 24px;
}
.passport-flow-rail {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: calc(12.5% - 6.75px);
  right: calc(12.5% - 6.75px);
  height: 2px;
  background: linear-gradient(90deg, 
    rgba(14, 59, 46, 0.20) 0%, 
    rgba(14, 59, 46, 0.40) 50%, 
    rgba(197, 151, 62, 0.50) 100%
  );
  border-radius: 2px;
  z-index: 1;
}
.passport-flow-beam {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  left: calc(12.5% - 6.75px);
  width: 140px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, transparent 0%, var(--gold-accent) 50%, #34D399 90%, #ffffff 100%);
  box-shadow: 0 0 14px var(--gold-accent), 0 0 6px #10B981;
  animation: flowPulse 4.5s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  z-index: 2;
  pointer-events: none;
}
@keyframes flowPulse {
  0% { left: calc(12.5% - 6.75px); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { left: calc(87.5% + 6.75px - 140px); opacity: 0; }
}
.passport-node-dots {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  pointer-events: none;
  align-items: center;
  z-index: 3;
}
.rail-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #ffffff;
  border: 2px solid var(--brand-green);
  box-shadow: 0 0 6px rgba(14, 59, 46, 0.35);
  transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  justify-self: center;
  align-self: center;
}
.rail-dot.active {
  border-color: var(--gold-accent);
  background: var(--gold-accent);
  box-shadow: 0 0 12px rgba(197, 151, 62, 0.85);
  transform: scale(1.25);
}

/* 卡片微质感与立体微浮雕 */
.passport-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  position: relative;
}
/* 严格清除任何多余的第二条横线与伪元素 */
.passport-grid::before,
.passport-grid::after,
.passport-card::before,
.passport-card::after {
  display: none !important;
  content: none !important;
}
.passport-card {
  position: relative;
  background: linear-gradient(180deg, #FFFFFF 0%, #FAFAF7 100%);
  border: 1px solid rgba(14, 59, 46, 0.12);
  border-radius: var(--radius-sm);
  padding: 20px 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.95);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease, border-color 0.3s ease;
  overflow: hidden;
}
.passport-card:hover {
  transform: translateY(-6px);
  border-color: rgba(14, 59, 46, 0.35);
  box-shadow: 0 18px 36px rgba(14, 59, 46, 0.12), 0 0 0 1px rgba(197, 151, 62, 0.35);
}
.passport-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.passport-icon {
  font-size: 1.35rem;
  color: var(--brand-green);
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.3s ease;
}
.passport-card:hover .passport-icon {
  transform: scale(1.15) rotate(-6deg);
  color: var(--gold-accent);
}
.passport-no {
  font-size: 1.35rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--brand-green) 0%, #1a4f3e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 2px rgba(14, 59, 46, 0.2));
}
.passport-card:hover .passport-no {
  background: linear-gradient(135deg, var(--gold-accent) 0%, #9E7420 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.passport-card-title {
  font-size: 1.05rem;
  font-weight: 850;
  color: var(--text-main);
  margin: 0;
  line-height: 1.25;
}
.passport-card-text {
  font-size: 0.80rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}
.passport-card-param {
  margin-top: 6px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.param-tag {
  font-size: 0.68rem;
  color: var(--brand-green);
  background: rgba(14, 59, 46, 0.05);
  border: 1px solid rgba(14, 59, 46, 0.12);
  border-radius: 4px;
  padding: 2px 6px;
  width: fit-content;
  transition: all 0.2s ease;
}
.passport-card:hover .param-tag {
  background: rgba(14, 59, 46, 0.1);
  border-color: rgba(14, 59, 46, 0.25);
}

/* 专属工业水印 */
.passport-watermark {
  position: absolute;
  bottom: 6px;
  right: 6px;
  width: 72px;
  height: 72px;
  color: var(--brand-green);
  opacity: 0.06;
  pointer-events: none;
  transition: opacity 0.35s ease, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.passport-card:hover .passport-watermark {
  opacity: 0.14;
  transform: scale(1.15) rotate(-3deg);
  color: var(--gold-accent);
}


/* ==========================================================================
   08. PROFESSIONAL INSIGHTS 专业洞见 (48% : 52% 黄金杂志对称排版)
   ========================================================================== */

.insights-section {
  padding: 46px 0;
  background: var(--bg-body);
  border-bottom: 1px solid var(--border-light);
}
.insights-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.48fr) minmax(0, 0.52fr);
  gap: 24px;
  margin-top: 22px;
  align-items: stretch;
}

/* 左侧焦点大卡片 (48% 优雅收敛，严整对称) */
.featured-insight-card {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  height: 100%;
  transition: all 0.25s ease;
}
.featured-insight-card:hover {
  border-color: var(--brand-green);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.featured-thumb {
  aspect-ratio: 16 / 9;
  max-height: 220px;
  overflow: hidden;
  background: #0F172A;
  width: 100%;
}
.featured-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}
.featured-insight-card:hover .featured-thumb img {
  transform: scale(1.03);
}
.featured-content {
  padding: 20px 22px 18px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  justify-content: space-between;
}
.insight-tag-dark {
  background: #1c2421;
  color: #ffffff;
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 0.68rem;
  font-weight: 700;
  width: fit-content;
  margin-bottom: 10px;
}
.featured-insight-title {
  font-size: 1.12rem;
  font-weight: 850;
  color: var(--text-main);
  line-height: 1.38;
  margin-bottom: 8px;
}
.featured-insight-excerpt {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.62;
  margin-bottom: 14px;
  flex-grow: 1;
}
.featured-insight-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-light);
  padding-top: 12px;
  font-size: 0.76rem;
  color: var(--text-muted);
  margin-top: auto;
}
.read-more-link {
  color: var(--brand-green);
  font-weight: 750;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: color 0.2s;
}
.read-more-link:hover {
  color: var(--brand-green-hover);
}
.read-more-link .svg-icon {
  font-size: 0.85rem;
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.2s ease;
}
.featured-insight-card:hover .read-more-link .svg-icon,
.read-more-link:hover .svg-icon {
  transform: translateX(6px);
  color: var(--brand-green-hover);
}

/* 右侧 4 篇横向列表 (52% 放大缩略图至 130px × 82px，细节清晰可见) */
.mini-insights-stack {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  height: 100%;
}
.mini-insight-item {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: 16px;
  align-items: center;
  text-decoration: none;
  transition: all 0.25s ease;
  flex: 1;
}
.mini-insight-item:hover {
  border-color: var(--brand-green);
  transform: translateX(3px);
  box-shadow: var(--shadow-sm);
}
.mini-thumb {
  width: 130px;
  height: 82px;
  aspect-ratio: 16 / 10;
  border-radius: 6px;
  overflow: hidden;
  background: #0F172A;
  border: 1px solid var(--border-light);
  flex-shrink: 0;
}
.mini-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}
.mini-insight-item:hover .mini-thumb img {
  transform: scale(1.05);
}
.mini-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.mini-cat-tag {
  font-size: 0.65rem;
  font-weight: 750;
  color: var(--brand-green);
  text-transform: uppercase;
  margin-bottom: 3px;
  letter-spacing: 0.02em;
}
.mini-title {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 4px;
}
.mini-meta {
  font-size: 0.70rem;
  color: var(--text-muted);
}
.mini-arrow {
  color: var(--text-muted);
  font-size: 0.85rem;
  transition: transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1), color 0.2s ease;
}
.mini-insight-item:hover .mini-arrow {
  color: var(--brand-green);
  transform: translateX(5px);
}


/* ==========================================================================
   09. CASE STUDIES 代表案例 (3 栏严整对称卡片，标准 16:9 比例)
   ========================================================================== */

.cases-section {
  padding: 46px 0;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-light);
}
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-top: 22px;
  align-items: stretch;
}
.case-card {
  background: var(--bg-body);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: all 0.25s ease;
}
.case-card:hover {
  border-color: var(--brand-green);
  box-shadow: var(--shadow-md);
  background: #ffffff;
  transform: translateY(-3px);
}
.case-thumb-wrap {
  aspect-ratio: 16 / 9;
  width: 100%;
  overflow: hidden;
  background: #0F172A;
  position: relative;
}
.case-thumb-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
  display: block;
}
.case-card:hover .case-thumb-wrap img {
  transform: scale(1.04);
}
.case-badge {
  position: absolute;
  top: 10px;
  left: 10px;
  background: rgba(15, 21, 19, 0.88);
  color: #ffffff;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  font-size: 0.68rem;
  font-weight: 700;
  backdrop-filter: blur(4px);
  letter-spacing: 0.02em;
}
.case-body {
  padding: 16px 16px 18px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.case-title {
  font-size: 0.98rem;
  font-weight: 850;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 6px;
  min-height: 48px;
  display: flex;
  align-items: center;
}
.case-desc {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.45;
  margin-bottom: 12px;
  min-height: 38px;
  display: flex;
  align-items: center;
}
.case-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xs);
  padding: 10px 4px;
  margin-bottom: 14px;
  text-align: center;
  min-height: 90px;
  align-items: center;
  box-sizing: border-box;
}
.metric-cell-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 0;
  padding: 0 2px;
}
.metric-cell-inner .metric-big-num {
  font-size: clamp(1.15rem, 1.32vw, 1.32rem);
  font-weight: 850;
  color: var(--brand-green);
  display: inline-flex;
  align-items: baseline;
  justify-content: center;
  line-height: 1.15;
  margin-bottom: 4px;
  letter-spacing: -0.02em;
  white-space: nowrap !important;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}
.metric-big-num .num-val {
  font-size: 1.25rem;
  font-weight: 850;
  white-space: nowrap !important;
}
.metric-big-num .num-unit {
  font-size: 0.82rem;
  font-weight: 700;
  margin-left: 2px;
  white-space: nowrap !important;
}
.metric-cell-inner .metric-label {
  font-size: 0.65rem;
  color: var(--text-muted);
  display: block;
  line-height: 1.3;
  text-align: center;
  word-break: break-all;
}
.case-view-link {
  color: var(--brand-green);
  font-weight: 750;
  font-size: 0.82rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
  padding-top: 4px;
  transition: color 0.2s;
}
.case-view-link:hover {
  color: var(--brand-green-hover);
}
.case-view-link .svg-icon {
  font-size: 0.75rem;
  transition: transform 0.2s ease;
}
.case-view-link:hover .svg-icon {
  transform: translateX(3px);
}


/* ==========================================================================
   10. PROJECT CTA 底部专家行动呼吁横幅 (深墨绿沉浸式)
   ========================================================================== */

.cta-banner-section {
  background: var(--brand-green);
  color: #ffffff;
  padding: 42px 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.2);
  position: relative;
}
.cta-banner-grid {
  display: grid;
  grid-template-columns: 136px 1fr 148px;
  gap: 36px;
  align-items: center;
}

/* 左侧肖像卡片 */
.cta-portrait-col {
  display: flex;
  justify-content: center;
}
.cta-portrait-frame {
  width: 130px;
  height: 130px;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid rgba(197, 151, 62, 0.5);
  background: #ffffff;
  margin: 0 auto;
  box-shadow: 0 0 24px rgba(197, 151, 62, 0.25), 0 12px 28px rgba(0, 0, 0, 0.35);
  transition: all 0.3s ease;
  flex-shrink: 0;
}
.cta-portrait-frame:hover {
  transform: scale(1.03);
  box-shadow: 0 0 32px rgba(197, 151, 62, 0.45), 0 16px 36px rgba(0, 0, 0, 0.45);
  border-color: var(--gold-muted);
}
.cta-portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
  display: block;
}

/* 中间文案与联系方式 */
.cta-content-col {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
}
.cta-headline {
  color: #ffffff;
  font-size: clamp(1.68rem, 2.1vw, 1.88rem);
  font-weight: 850;
  line-height: 1.25;
  white-space: nowrap;
  margin-bottom: 8px;
  letter-spacing: -0.015em;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}
.cta-sub-keywords {
  font-size: 0.86rem;
  color: rgba(255, 255, 255, 0.78);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}
.cta-contact-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 28px;
}
.cta-contact-item {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #ffffff;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
}
.cta-contact-item:hover {
  opacity: 0.95;
  transform: translateY(-1px);
}
.contact-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.12);
  display: grid;
  place-items: center;
  color: var(--gold-muted);
  font-size: 1rem;
}
.contact-text {
  display: flex;
  flex-direction: column;
}
.contact-label {
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.62);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.contact-val {
  font-size: 0.95rem;
  font-weight: 750;
  color: #ffffff;
  letter-spacing: 0.02em;
}

/* 右侧微信二维码小卡片 */
.cta-qr-col {
  display: flex;
  justify-content: flex-end;
}
.cta-qr-card {
  background: #ffffff;
  padding: 10px 12px 8px;
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.32), 0 0 0 1px rgba(255, 255, 255, 0.9);
  width: 136px;
  margin: 0;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  flex-shrink: 0;
}
.cta-qr-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.38), 0 0 0 1px #ffffff;
}
.cta-qr-img {
  width: 85px;
  height: 85px;
  display: block;
  margin: 0 auto 4px;
  border-radius: var(--radius-xs);
}
.cta-qr-text {
  display: flex;
  flex-direction: column;
}
.qr-main {
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}
.qr-sub {
  font-size: 0.60rem;
  color: var(--text-muted);
}


/* ==========================================================================
   11. FOOTER 全站页脚 (纯白极简四栏)
   ========================================================================== */

.site-footer {
  background: #ffffff;
  padding: 26px 0 16px;
  color: var(--text-secondary);
  font-size: 0.80rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1.2fr;
  gap: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border-light);
}
.footer-brand-title {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 8px;
}
.footer-brand-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.65;
}
.footer-heading {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}
.footer-org-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.65;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.78rem;
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--brand-green);
}
.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
}
.footer-bottom {
  padding-top: 16px;
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-muted);
}
.footer-bottom a {
  color: inherit;
  text-decoration: none;
}
.footer-bottom a:hover {
  text-decoration: underline;
}


/* ==========================================================================
   响应式断点适配 (Responsive Breakpoints)
   ========================================================================== */

@media (max-width: 1100px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .hero-headline {
    white-space: normal;
  }
  .about-title {
    white-space: normal;
  }
  .biz-core-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .biz-support-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
  }
  .business-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .insights-grid {
    grid-template-columns: 1fr;
  }
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta-banner-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .cta-portrait-frame {
    margin: 0 auto;
  }
  .cta-contact-list {
    justify-content: center;
  }
  .cta-qr-card {
    margin: 0 auto;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 991px) {
  .hero-section {
    padding: 98px 0 42px;
  }
  .about-title,
  .topic-title,
  .cta-headline {
    white-space: normal;
  }
  .biz-core-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .biz-support-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .biz-support-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .biz-consultation-banner {
    grid-template-columns: 1fr;
    padding: 20px 18px;
  }
  .consultation-banner-right {
    margin-top: 10px;
  }
}

@media (max-width: 768px) {
  .passport-track-container {
    display: none;
  }
  .container {
    padding: 0 16px;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 12px !important;
  }
  .metric-cell {
    border-right: none !important;
    border-bottom: 1px solid var(--border-light) !important;
    padding: 10px 8px !important;
    margin: 0 !important;
  }
  .metric-cell:nth-child(3),
  .metric-cell:nth-child(4) {
    border-bottom: none !important;
    padding-bottom: 10px !important;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .business-grid {
    grid-template-columns: 1fr 1fr;
  }
  .topic-steps-bar {
    grid-template-columns: 1fr;
  }
  .topic-step-item {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 8px;
  }
  .topic-step-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .topic-pipeline-chain {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
  .passport-header-flex {
    flex-direction: column;
    align-items: flex-start;
  }
  .passport-grid {
    grid-template-columns: 1fr 1fr;
  }
  .mini-insight-item {
    grid-template-columns: 100px 1fr auto;
    gap: 12px;
    padding: 10px;
  }
  .mini-thumb {
    width: 100px;
    height: 64px;
  }
  .case-metrics-row {
    grid-template-columns: repeat(3, 1fr);
    gap: 3px;
    padding: 8px 3px;
    min-height: 80px;
  }
  .metric-cell-inner .metric-big-num {
    font-size: 1.05rem;
  }
  .metric-big-num .num-val {
    font-size: 1.08rem;
  }
  .metric-big-num .num-unit {
    font-size: 0.72rem;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .cases-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .hero-right-stage .hero-img-wrapper {
    aspect-ratio: auto !important;
  }
  .hero-right-stage .hero-main-img {
    aspect-ratio: 16 / 9 !important;
    height: auto !important;
  }
  .hero-hud-nodes {
    position: static !important;
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 6px !important;
    padding: 8px !important;
    background: #0B110F !important;
    border-top: 1px solid rgba(255, 255, 255, 0.12) !important;
  }
  .hud-node-card {
    min-width: 0 !important;
    width: 100% !important;
    padding: 6px 10px !important;
  }
}

@media (max-width: 480px) {
  .business-grid {
    grid-template-columns: 1fr;
  }
  .passport-grid {
    grid-template-columns: 1fr;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px !important;
  }
  .consultation-flow-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
}

/* Cases & Insights header row */
.cases-header-row,
.insights-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 24px;
}
.cases-header-row .section-eyebrow,
.insights-header-row .section-eyebrow {
  margin-bottom: 0;
}
.biz-card,
.passport-card,
.case-thumb-link,
.case-title-link,
.featured-thumb-link,
.featured-title-link {
  text-decoration: none;
  color: inherit;
}
.case-thumb-link,
.featured-thumb-link {
  display: block;
  width: 100%;
  height: 100%;
}
.more-cases-link {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  transition: color 0.2s ease;
}
.more-cases-link:hover {
  color: var(--brand-green);
}

  
/* 让新版自带高清专业地质标注的 2K 剖面大图纯净完整呈现，绝不遮挡图上文字 */
.cutaway-annotation-svg,
.cutaway-pins-layer,
.hud-annotation-layer {
  display: none !important;
}
.topic-image-frame {
  background: #000000 !important;
  border: 1px solid rgba(255, 255, 255, 0.16) !important;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.85) !important;
}
.topic-image-frame::after {
  box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.8), inset 0 1px 3px rgba(255, 255, 255, 0.15) !important;
}

/* ==========================================================================
   SKELETON LOADER & LAZY LOAD TRANSITIONS (根治图片暗色闪烁与黑框)
   ========================================================================== */
@keyframes skeletonPulse {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.biz-card-thumb,
.biz-core-thumb,
.hero-img-wrapper,
.case-thumb,
.mini-thumb {
  background: linear-gradient(110deg, #101a16 10%, #1a2a22 25%, #101a16 40%) !important;
  background-size: 200% 100% !important;
  animation: skeletonPulse 2.2s cubic-bezier(0.4, 0, 0.6, 1) infinite !important;
}

/* ==========================================================================
   MOBILE STICKY ACTION BAR (48px 高度毛玻璃常驻沟通条，拨号直连，零遮挡)
   ========================================================================== */
.mobile-sticky-action-bar {
  display: none;
}
@media (max-width: 768px) {
  body {
    padding-bottom: 54px !important;
  }
  .mobile-sticky-action-bar {
    display: flex !important;
    align-items: center !important;
    justify-content: space-around !important;
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    height: 48px !important;
    background: rgba(11, 17, 15, 0.95) !important;
    backdrop-filter: blur(12px) !important;
    -webkit-backdrop-filter: blur(12px) !important;
    border-top: 1px solid rgba(255, 255, 255, 0.14) !important;
    z-index: 9999 !important;
    padding: 0 10px !important;
    gap: 10px !important;
  }
  .mobile-sticky-btn {
    flex: 1 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 6px !important;
    height: 36px !important;
    border-radius: 18px !important;
    font-size: 0.80rem !important;
    font-weight: 700 !important;
    text-decoration: none !important;
    transition: opacity 0.2s ease !important;
  }
  .mobile-sticky-btn .svg-icon {
    width: 14px !important;
    height: 14px !important;
  }
  .mobile-call-btn {
    background: #C5973E !important;
    color: #0B110F !important;
  }
  .mobile-wx-btn {
    background: rgba(255, 255, 255, 0.12) !important;
    color: #ffffff !important;
    border: 1px solid rgba(255, 255, 255, 0.22) !important;
  }
}