/* 
================================================================
   同孚智能 - 品牌网站重构样式系统 (Tongfu Intelligent Redesign System)
   Aesthetic direction: High-end tech portal, refined minimalism, 
   sleek micro-interactions, responsive & clean.
================================================================
*/

:root {
  /* 品牌色板 (Color Tokens) */
  --ink: #14202b;
  --muted: #5b6775;
  --line: #dbe3eb;
  --panel: #ffffff;
  --bg: #f4f7fa;
  
  --deep: #092944;
  --deep2: #0f4266;
  --accent: #17a2b8;
  --gold: #d7a94d;
  --green: #2e7d66;
  
  /* 高级渐变与阴影 (Effects Tokens) */
  --shadow: 0 18px 45px rgba(16, 37, 56, 0.08);
  --shadow-hover: 0 25px 55px rgba(9, 41, 68, 0.12);
  --transition-bezier: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 全局与基础样式 (Global & Reset) */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "SF Pro SC", "HanHei SC", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

/* 头部导航栏 - 精致毛玻璃悬浮效果 (Glassmorphism Nav Header) */
.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  background: rgba(255, 255, 255, 0.78);
  border-bottom: 1px solid rgba(219, 227, 235, 0.5);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.02);
  transition: var(--transition-bezier);
}

/* 品牌标识 (Brand & Logo) */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--deep);
}

.brand img {
  width: 118px;
  height: 49px;
  object-fit: contain;
}

/* 主导航栏与磁贴 Hover 效果 (Site Navigation & Underline Interaction) */
.site-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-nav > a,
.nav-group > a {
  display: flex;
  align-items: center;
  height: 42px;
  padding: 0 14px;
  position: relative;
  border-radius: 6px;
  color: #22313f;
  font-size: 15px;
  font-weight: 500;
  transition: color 0.3s ease;
}

/* 动态下划线动画 (Magnetic Hover Underline) */
.site-nav > a:not(.nav-cta):after,
.nav-group > a:after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.site-nav > a:not(.nav-cta):hover:after,
.nav-group:hover > a:after {
  transform: scaleX(1);
}

.site-nav > a:not(.nav-cta):hover,
.nav-group:hover > a {
  color: var(--accent);
}

/* 主动作按钮 (Call To Action - Contact Us) */
.nav-cta {
  background: var(--deep) !important;
  color: #fff !important;
  border-radius: 6px;
  font-weight: 600 !important;
  box-shadow: 0 4px 14px rgba(9, 41, 68, 0.12);
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease !important;
}

.nav-cta:hover {
  transform: translateY(-1.5px);
  background: var(--deep2) !important;
  box-shadow: 0 6px 18px rgba(9, 41, 68, 0.22);
}

/* 下拉菜单面板 (Dropdown Menu Panels) */
.nav-group {
  position: relative;
}

.nav-panel {
  position: absolute;
  right: 0;
  top: 44px;
  display: none;
  grid-template-columns: repeat(2, minmax(170px, 1fr));
  gap: 2px;
  min-width: 420px;
  max-height: 70vh;
  overflow: auto;
  padding: 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.nav-group:hover .nav-panel {
  display: grid;
  opacity: 1;
  transform: translateY(0);
}

.nav-panel a {
  padding: 9px 10px;
  border-radius: 5px;
  color: #304153;
  font-size: 14px;
  transition: background 0.2s ease, color 0.2s ease;
}

.nav-panel a:hover {
  background: #f0f6f8;
  color: var(--deep2);
}

.solution-panel {
  min-width: 520px;
}

/* 移动端菜单开关 (Mobile Nav Toggle) */
.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px;
  background: var(--deep);
}

/* 版心容器 (Container Layout) */
.container {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
}

/* 首页 Banner 区 (Hero Section) */
.hero {
  position: relative;
  min-height: calc(100vh - 74px);
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
  background: linear-gradient(90deg, rgba(5, 30, 51, 0.94), rgba(9, 55, 86, 0.72)), url("../images/2024032504462436.jpg") center/cover no-repeat;
}

.hero:after {
  content: "";
  position: absolute;
  inset: auto -10% -18% 30%;
  height: 42%;
  background: rgba(23, 162, 184, 0.18);
  transform: skewY(-6deg);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  padding: 70px 0;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: #bfe8ef;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.eyebrow:before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--gold);
}

.hero h1 {
  max-width: 850px;
  margin: 0 0 22px;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.08;
  color: #fff;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.hero p {
  max-width: 700px;
  margin: 0 0 32px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 18px;
}

.hero-actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* 按钮设计 (Buttons) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 24px;
  border-radius: 6px;
  border: 1px solid var(--deep);
  background: var(--deep);
  color: #fff;
  font-weight: 700;
  box-shadow: 0 4px 14px rgba(9, 41, 68, 0.15);
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.btn:hover {
  transform: translateY(-2px);
  background: var(--deep2);
  box-shadow: 0 6px 20px rgba(9, 41, 68, 0.25);
}

.btn.secondary {
  background: transparent;
  color: var(--deep);
  border-color: var(--deep);
  box-shadow: none;
}

.btn.secondary:hover {
  background: rgba(9, 41, 68, 0.05);
  color: var(--deep2);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.hero .btn.secondary {
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

.hero .btn.secondary:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

/* 首屏核心指标数据面板 (Hero Metrics Dashboard) */
.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 14px;
  margin-top: 54px;
}

.metric {
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  backdrop-filter: blur(4px);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.metric:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.1);
}

.metric strong {
  display: block;
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 4px;
}

.metric span {
  color: rgba(255, 255, 255, 0.82);
  font-size: 13.5px;
}

/* 通用区块 (Sections) */
.section {
  padding: 82px 0;
}

.section.alt {
  background: #fff;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 40px;
}

.section-kicker {
  margin: 0 0 8px;
  color: var(--green);
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 13px;
}

.section h2 {
  margin: 0;
  color: var(--deep);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1.18;
  font-weight: 800;
}

.section-head p {
  max-width: 520px;
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
}

/* 卡片系统网格布局 (Grid System) */
.grid {
  display: grid;
  gap: 22px;
}

.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* 卡片组件 - 重新设计微浮升与发光阴影 hover 动效 (Premium Cards & Interactions) */
.capability,
.product-card,
.solution-card,
.case-card,
.info-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(20, 32, 43, 0.03);
  transition: var(--transition-bezier);
}

/* 卡片高级悬停效果 */
.capability:hover,
.product-card:hover,
.solution-card:hover,
.case-card:hover,
.info-card:hover {
  transform: translateY(-6px);
  border-color: rgba(23, 162, 184, 0.35);
  box-shadow: 0 20px 45px rgba(9, 41, 68, 0.08);
}

/* 01. 核心现场能力卡片 (Capability Card) */
.capability {
  padding: 26px;
}

.capability b {
  display: inline-flex;
  margin-bottom: 18px;
  color: var(--gold);
  font-size: 24px;
  font-family: Georgia, serif;
}

.capability h3,
.info-card h3 {
  margin: 0 0 10px;
  color: var(--deep);
  font-size: 20px;
  font-weight: 700;
}

.capability p,
.info-card p {
  margin: 0;
  color: var(--muted);
  text-align: left !important;
}

/* 02. 智能硬件产品卡片 (Product Card) */
.product-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product-card img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: contain;
  background: #eef3f6;
  padding: 18px;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.product-card:hover img {
  transform: scale(1.04);
}

.product-card .body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.tag {
  align-self: flex-start;
  padding: 3px 10px;
  border-radius: 999px;
  background: #e6f5f7;
  color: #127184;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.product-card h3,
.solution-card h3,
.case-card h3 {
  margin: 0;
  color: var(--deep);
  font-size: 20px;
  line-height: 1.35;
  font-weight: 700;
}

.product-card p,
.solution-card p,
.case-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  text-align: left !important;
}

.text-link {
  margin-top: auto;
  color: var(--deep2);
  font-weight: 800;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}

.text-link:hover {
  color: var(--accent);
}

.text-link:after {
  content: "→";
  transition: transform 0.2s ease;
}

.text-link:hover:after {
  transform: translateX(4px);
}

/* 03. 业务解决方案卡片 (Solution Card) */
.solution-card {
  overflow: hidden;
}

.solution-card img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  background: #eef3f6;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.solution-card:hover img {
  transform: scale(1.04);
}

.solution-card .body {
  padding: 22px;
}

/* 品牌故事条带区 (Brand Proof Band) */
.band {
  background: linear-gradient(90deg, var(--deep), #123f5d);
  color: #fff;
}

.band h2 {
  color: #fff;
}

.band p {
  color: rgba(255, 255, 255, 0.82);
}

.band .info-card {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: none;
}

.band .info-card h3 {
  color: #fff;
}

.band .info-card p {
  color: rgba(255, 255, 255, 0.78);
}

.case-card {
  padding: 24px;
}

/* 内页 Banner (Page Hero) */
.page-hero {
  padding: 72px 0 46px;
  color: #fff;
  background: linear-gradient(90deg, rgba(5, 30, 51, 0.94), rgba(9, 55, 86, 0.72)), url("../images/2024032504480425.jpg") center/cover no-repeat;
}

.page-hero h1 {
  max-width: 900px;
  margin: 0 0 14px;
  color: #fff;
  font-size: clamp(34px, 5vw, 54px);
  line-height: 1.16;
  font-weight: 800;
}

.page-hero p {
  max-width: 760px;
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 17px;
}

/* 面包屑导航 (Breadcrumbs) */
.breadcrumb {
  padding: 18px 0;
  color: #71808f;
  font-size: 14px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  margin-bottom: 14px;
}

.breadcrumb a {
  color: var(--deep2);
  font-weight: 600;
  transition: color 0.2s ease;
}

.breadcrumb a:hover {
  color: var(--accent);
}

/* 详情页分栏布局 (Detail Grid Layout) */
.detail-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 32px;
  align-items: start;
}

.detail-main,
.detail-aside {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(20, 32, 43, 0.03);
}

.detail-main {
  padding: 34px;
}

.detail-aside {
  position: sticky;
  top: 92px;
  padding: 24px;
}

.detail-main h2,
.detail-aside h2 {
  margin: 0 0 18px;
  color: var(--deep);
  font-size: 24px;
  font-weight: 800;
}

.detail-main p {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.75;
}

.detail-visual {
  margin-bottom: 30px;
  border-radius: 8px;
  overflow: hidden;
  background: #eef3f6;
  border: 1px solid var(--line);
}

.detail-visual img {
  width: 100%;
  max-height: 560px;
  object-fit: contain;
  margin: auto;
}

/* 特点与场景列表 (Feature lists) */
.feature-list {
  display: grid;
  gap: 12px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
}

.feature-list li {
  padding: 14px 18px;
  border-left: 4px solid var(--accent);
  background: #f6f9fb;
  color: #334454;
  font-size: 15px;
  border-radius: 0 6px 6px 0;
}

.scenario-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 32px;
  padding: 0;
  list-style: none;
}

.scenario-list li {
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #405365;
  font-size: 14px;
  font-weight: 500;
}

.aside-links {
  display: grid;
  gap: 8px;
  margin-top: 18px;
  max-height: 50vh;
  overflow-y: auto;
  padding-right: 4px;
}

.aside-links a {
  padding: 10px 14px;
  border-radius: 6px;
  background: #f2f6f8;
  color: #304153;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.aside-links a:hover {
  background: #e4eff3;
  color: var(--deep2);
  transform: translateX(3px);
}

.contact-strip {
  margin-top: 34px;
  padding: 24px;
  border-radius: 8px;
  background: #edf7f9;
  border-left: 4px solid var(--accent);
  font-size: 15px;
  color: var(--deep);
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 18px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: var(--transition-bezier);
}

.timeline-item:hover {
  transform: translateX(4px);
  border-color: var(--line);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.03);
}

.timeline-item strong {
  color: var(--deep2);
  font-size: 20px;
  font-family: Georgia, serif;
}

/* 网站页脚 (Footer) */
.site-footer {
  background: #071e32;
  color: #dbe6ef;
  padding: 60px clamp(20px, 4vw, 56px) 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.4fr;
  gap: 34px;
  max-width: 1160px;
  margin: 0 auto;
}

.footer-logo {
  width: 128px;
  height: 54px;
  object-fit: contain;
  background: #fff;
  border-radius: 6px;
  margin-bottom: 16px;
  padding: 6px;
}

.site-footer h3 {
  margin: 0 0 16px;
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.site-footer p {
  margin: 0 0 10px;
  color: #b9c8d6;
  font-size: 14.5px;
  line-height: 1.6;
  text-align: left !important;
}

.site-footer a {
  display: block;
  margin: 0 0 10px;
  color: #c9d7e3;
  font-size: 14px;
  transition: color 0.2s ease;
}

.site-footer a:hover {
  color: var(--accent);
}

.footer-bottom {
  max-width: 1160px;
  margin: 40px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  gap: 18px;
  justify-content: space-between;
  color: #9fb0bf;
  font-size: 13.5px;
}

.footer-bottom a {
  display: inline;
  margin: 0;
  text-decoration: none;
}

.footer-bottom a:hover {
  color: #fff;
}

/* 案例单页卡片列表 */
.simple-list {
  display: grid;
  gap: 18px;
}

.simple-list article {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: var(--transition-bezier);
}

.simple-list article:hover {
  transform: translateY(-4px);
  border-color: rgba(23, 162, 184, 0.3);
  box-shadow: 0 12px 30px rgba(9, 41, 68, 0.05);
}

.simple-list h3 {
  margin: 0 0 8px;
  color: var(--deep);
  font-weight: 700;
}

.simple-list p {
  margin: 0;
  color: var(--muted);
}

/* 
================================================================
   响应式断点与设备适配 (Responsive Media Queries)
================================================================
*/

@media (max-width: 960px) {
  /* 导航栏自适应设计 */
  .site-header {
    align-items: center;
    min-height: 74px;
    padding: 14px 20px;
  }
  
  .nav-toggle {
    display: flex !important;
    position: absolute;
    right: 18px;
    top: 16px;
    background: var(--deep);
    border-color: var(--deep);
    z-index: 4;
    border-radius: 6px;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--line);
  }
  
  .nav-toggle::before {
    content: "\2630";
    color: #fff;
    font-size: 24px;
    line-height: 1;
  }
  
  .nav-toggle span {
    display: none !important;
  }
  
  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 74px;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 20px 24px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
  }
  
  body.nav-open .site-nav {
    display: flex;
  }
  
  .site-nav > a,
  .nav-group > a {
    height: auto;
    padding: 12px;
  }
  
  .site-nav > a:not(.nav-cta):after,
  .nav-group > a:after {
    display: none;
  }
  
  .nav-group:hover .nav-panel,
  .nav-panel {
    position: static;
    display: grid;
    min-width: 0;
    max-height: none;
    box-shadow: none;
    border: 0;
    padding: 4px 0 8px;
    grid-template-columns: 1fr;
    background: transparent;
    opacity: 1;
    transform: none;
  }
  
  /* 布局退化为单列 */
  .hero-metrics,
  .grid.cols-4,
  .grid.cols-3,
  .grid.cols-2,
  .footer-grid,
  .detail-layout {
    grid-template-columns: 1fr;
  }
  
  .section-head {
    display: block;
  }
  
  .section-head p {
    margin-top: 10px;
  }
  
  .detail-aside {
    position: static;
  }
  
  .footer-bottom {
    display: block;
  }
  
  .footer-bottom span {
    display: block;
    margin-bottom: 8px;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 28px, 1160px);
  }
  
  .hero {
    min-height: auto;
  }
  
  .hero-inner {
    padding: 54px 0;
    overflow: hidden;
  }
  
  .hero h1 {
    font-size: 29px;
    line-height: 1.18;
    max-width: 100%;
    word-break: break-all;
    overflow-wrap: anywhere;
  }
  
  .hero p {
    font-size: 16px;
    max-width: 100%;
    word-break: break-all;
    overflow-wrap: anywhere;
  }
  
  .page-hero h1 {
    font-size: 29px;
    line-height: 1.18;
    word-break: break-all;
    overflow-wrap: anywhere;
  }
  
  .page-hero p {
    font-size: 16px;
    word-break: break-all;
    overflow-wrap: anywhere;
  }
  
  .hero-actions .btn {
    min-width: 0;
    padding: 0 16px;
  }
  
  .hero-metrics {
    margin-top: 34px;
  }
  
  .metric {
    padding: 16px;
  }
  
  .section {
    padding: 54px 0;
  }
  
  .page-hero {
    padding: 54px 0 36px;
  }
  
  .timeline-item {
    grid-template-columns: 1fr;
  }
  
  .brand span {
    display: none;
  }
  
  .brand img {
    width: 104px;
  }
  
  .site-nav {
    top: 70px;
  }
  
  .site-header {
    padding: 12px 18px;
  }
}

/* 
================================================================
   同孚智能 - 二阶段重构与高级交互组件样式
================================================================
*/

/* 一键复制提示 (Tooltip Bubble) */
.copy-success-tooltip {
  position: absolute;
  background: var(--ink);
  color: #fff;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: bold;
  pointer-events: none;
  transform: translate(-50%, -100%);
  margin-top: -8px;
  animation: tooltip-fade 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 100;
}

.copy-success-tooltip:after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 4px 4px 0;
  border-style: solid;
  border-color: var(--ink) transparent transparent;
}

@keyframes tooltip-fade {
  0% { opacity: 0; transform: translate(-50%, -85%); }
  15% { opacity: 1; transform: translate(-50%, -100%); }
  80% { opacity: 1; transform: translate(-50%, -100%); }
  100% { opacity: 0; transform: translate(-50%, -115%); }
}

/* 玻璃态留言表单 (Glassmorphism Contact Form) */
.contact-form-card {
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 30px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: var(--transition-bezier);
  position: relative;
  overflow: hidden;
}

.contact-form-card:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(23, 162, 184, 0.25);
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.form-group label {
  font-size: 14px;
  font-weight: 700;
  color: var(--deep);
}

.form-control {
  width: 100%;
  min-height: 44px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.9);
  font-size: 14.5px;
  color: var(--ink);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(23, 162, 184, 0.15);
  background: #fff;
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* 提交加载与成功过渡 (Form Transitions) */
.form-submit-loading {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.96);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.form-submit-loading.active {
  opacity: 1;
  pointer-events: auto;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid rgba(23, 162, 184, 0.15);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.form-success-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 20px;
}

.success-icon {
  width: 60px;
  height: 60px;
  background: #e6f5f2;
  color: var(--green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: bold;
  margin-bottom: 20px;
  animation: scale-up 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes scale-up {
  0% { transform: scale(0.6); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* 双基地与科技光标 (Base Cards & Interactive Radar Pulse) */
.base-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 24px;
  border-radius: 8px;
  background: var(--panel);
  border: 1px solid var(--line);
  transition: var(--transition-bezier);
  position: relative;
  text-align: left;
}

.base-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(23, 162, 184, 0.25);
}

.base-card h3 {
  margin: 0;
  color: var(--deep);
  font-size: 18px;
  font-weight: 700;
}

.base-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.6;
}

.copyable-action {
  cursor: pointer;
  position: relative;
  transition: color 0.2s ease;
}

.copyable-action:hover {
  color: var(--accent);
}

.radar-stamp-container {
  position: relative;
  width: 100%;
  height: 180px;
  background: linear-gradient(135deg, #092944, #123f5d);
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.radar-bg-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 15px 15px;
  background-position: center;
}

.radar-pulse-ring {
  position: absolute;
  width: 24px;
  height: 24px;
  background: rgba(23, 162, 184, 0.2);
  border: 1.5px solid var(--accent);
  border-radius: 50%;
}

.radar-pulse-ring:nth-child(2) {
  animation: radar-ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.radar-pulse-ring:nth-child(3) {
  animation: radar-ping 2s cubic-bezier(0, 0, 0.2, 1) infinite 0.6s;
}

.radar-pulse-ring:nth-child(4) {
  animation: radar-ping 2s cubic-bezier(0, 0, 0.2, 1) infinite 1.2s;
}

@keyframes radar-ping {
  0% { transform: scale(1); opacity: 1; }
  100% { transform: scale(4.5); opacity: 0; }
}

.radar-core-dot {
  width: 10px;
  height: 10px;
  background: #fff;
  box-shadow: 0 0 12px var(--accent);
  border-radius: 50%;
  z-index: 2;
}

.radar-stamp-label {
  position: absolute;
  bottom: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.8);
  text-transform: uppercase;
}

/* 核心力量三叠卡 (Core Values) */
.value-triad-card {
  padding: 28px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  transition: var(--transition-bezier);
  border-top: 4px solid var(--accent);
  text-align: left;
}

.value-triad-card:nth-child(2) {
  border-top-color: var(--gold);
}

.value-triad-card:nth-child(3) {
  border-top-color: var(--green);
}

.value-triad-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
}

.value-triad-card h3 {
  margin: 0 0 10px;
  color: var(--deep);
  font-size: 20px;
  font-weight: 700;
}

.value-triad-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.6;
  text-align: left !important;
}

/* 垂直渐变时间轴 (Glowing Vertical Timeline) */
.timeline-container {
  position: relative;
  max-width: 800px;
  margin: 40px auto;
  padding: 0 20px;
}

.timeline-container:before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 45px;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--accent) 0px, var(--accent) 6px, transparent 6px, transparent 12px);
  opacity: 0.65;
}

.timeline-node {
  position: relative;
  margin-bottom: 42px;
  padding-left: 80px;
  text-align: left;
}

.timeline-node:last-child {
  margin-bottom: 0;
}

.timeline-dot-wrapper {
  position: absolute;
  left: 33px;
  top: 4px;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.timeline-pulse-dot {
  position: absolute;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(23, 162, 184, 0.4);
}

.timeline-pulse-dot:after {
  content: "";
  position: absolute;
  inset: -5px;
  border: 1.5px solid var(--accent);
  border-radius: 50%;
  animation: node-ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

.timeline-node:nth-child(even) .timeline-pulse-dot {
  background: var(--gold);
}

.timeline-node:nth-child(even) .timeline-pulse-dot:after {
  border-color: var(--gold);
}

.timeline-year {
  font-family: Georgia, serif;
  font-size: 26px;
  font-weight: 800;
  color: var(--deep);
  margin: 0 0 6px;
  line-height: 1;
}

.timeline-node:nth-child(even) .timeline-year {
  color: var(--deep2);
}

.timeline-box {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 4px 18px rgba(0,0,0,0.01);
  transition: var(--transition-bezier);
}

.timeline-box:hover {
  transform: translateX(4px);
  border-color: rgba(23, 162, 184, 0.2);
  box-shadow: var(--shadow);
}

.timeline-box h4 {
  margin: 0 0 6px;
  color: var(--deep);
  font-size: 16.5px;
  font-weight: 700;
}

.timeline-box p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.6;
  text-align: left !important;
}

/* 2x2 案例卡片布局 (Case Grid & Badges) */
.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.case-study-card {
  display: flex;
  flex-direction: column;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(20, 32, 43, 0.02);
  transition: var(--transition-bezier);
  text-align: left;
}

.case-study-card:hover {
  transform: translateY(-6px);
  border-color: rgba(23, 162, 184, 0.35);
  box-shadow: var(--shadow-hover);
}

.case-visual {
  position: relative;
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #0f4266, #092944);
  overflow: hidden;
}

.case-visual-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(9, 41, 68, 0.9) 10%, rgba(9, 41, 68, 0.2) 100%);
  z-index: 2;
}

.case-badge-floating {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 3;
  background: rgba(23, 162, 184, 0.9);
  color: #fff;
  font-size: 11px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 4px;
  letter-spacing: 0.05em;
}

.case-visual-text {
  position: absolute;
  bottom: 16px;
  left: 20px;
  right: 20px;
  z-index: 3;
  color: #fff;
}

.case-performance-indicator {
  font-size: 24px;
  font-weight: 800;
  color: var(--gold);
  margin-bottom: 2px;
  font-family: Georgia, serif;
}

.case-performance-label {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.82);
  letter-spacing: 0.06em;
}

.case-study-card .body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.case-study-card h3 {
  margin: 0;
  color: var(--deep);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.35;
}

.case-study-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.6;
  text-align: left !important;
}

.case-study-card .text-link {
  margin-top: auto;
}

@media (max-width: 960px) {
  .case-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }
}

@media (max-width: 640px) {
  .timeline-container:before {
    left: 25px;
  }
  .timeline-dot-wrapper {
    left: 13px;
  }
  .timeline-node {
    padding-left: 45px;
  }
}