/* ============================================
   Cyberlin Optoelectronics - Design System
   Style: Apple-inspired + Modern Tech
   Self-contained: No external dependencies
   ============================================ */

/* === CSS Variables === */
:root {
  --primary: #0052cc;
  --primary-dark: #003d99;
  --primary-light: #2979ff;
  --primary-gradient: linear-gradient(135deg, #0052cc 0%, #003d99 100%);
  --accent: #00b8ff;
  --accent-glow: rgba(0, 212, 255, 0.3);
  --green: #34c759;
  --green-dark: #248a3d;
  --orange: #ff9500;
  --purple: #af52de;
  --dark-bg: #0a0a0f;
  --dark-bg-2: #14141c;
  --dark-card: #1a1a24;
  --dark-border: #2a2a35;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-tertiary: #a1a1a6;
  --text-light: #f5f5f7;
  --text-light-secondary: #a1a1a6;
  --bg-white: #ffffff;
  --bg-gray: #f5f5f7;
  --bg-gray-2: #fbfbfd;
  --bg-dark: linear-gradient(135deg, #0a1628 0%, #0f1f3d 50%, #003d99 100%);
  --shadow-xs: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.16);
  --shadow-xl: 0 16px 48px rgba(0,0,0,0.20);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.2);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.06), 0 1px 3px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 12px 40px rgba(0,0,0,0.12), 0 4px 12px rgba(0,0,0,0.06);
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  --font-sans: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  --max-width: 1200px;
  --max-width-wide: 1400px;
  --nav-height: 64px;
}

/* === Reset === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-white);
  line-height: 1.6;
  overflow-x: hidden;
  letter-spacing: -0.01em;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea, select { font-family: inherit; }

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

.container-wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }
.section-sm { padding: 60px 0; }
.section-dark { background: var(--dark-bg); color: var(--text-light); }
.section-gray { background: var(--bg-gray); }
.section-gray-2 { background: var(--bg-gray-2); }

/* Business section darker background for card contrast */
.section-business { background: #e8eaef; }

/* === Section Header === */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header .section-badge {
  display: inline-block;
  padding: 7px 18px;
  background: linear-gradient(135deg, rgba(0,82,204,0.10), rgba(0,184,255,0.12));
  color: var(--primary);
  border: 1px solid rgba(0,82,204,0.14);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 16px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.6);
}

.section-dark .section-header .section-badge {
  background: rgba(0, 212, 255, 0.15);
  color: var(--accent);
  border-color: rgba(0,212,255,0.25);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.section-header h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-header p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.section-dark .section-header p { color: var(--text-light-secondary); }
.section-dark .section-header h2 { color: var(--text-light); }

/* === Buttons — Glassmorphism 毛玻璃设计系统 === */
.btn {
  --glass-bg: rgba(255,255,255,0.42);
  --glass-border: rgba(255,255,255,0.9);
  --glass-text: #0a2540;
  --glass-glow: rgba(15,30,60,0.18);
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  cursor: pointer;
  color: var(--glass-text);
  border: 1px solid var(--glass-border);
  background:
    radial-gradient(130% 130% at 0% 0%, rgba(30,111,181,0.12) 0%, transparent 55%),
    radial-gradient(130% 130% at 100% 100%, rgba(205,142,9,0.10) 0%, transparent 55%),
    var(--glass-bg);
  -webkit-backdrop-filter: blur(26px) saturate(180%);
  backdrop-filter: blur(26px) saturate(180%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.95),
    inset 1px 0 0 rgba(255,255,255,0.35),
    inset -1px 0 0 rgba(255,255,255,0.35),
    inset 0 -2px 0 rgba(0,20,60,0.25),
    0 10px 24px var(--glass-glow),
    0 28px 56px var(--glass-glow);
  transition: transform .5s cubic-bezier(.22,.8,.28,1),
              box-shadow .5s cubic-bezier(.22,.8,.28,1),
              background .3s ease;
}

.btn svg { transition: transform .4s cubic-bezier(.22,.8,.28,1); }

/* 流动高光：22° 白色斜光带，hover 扫过 */
.btn::before {
  content: "";
  position: absolute;
  top: -60%;
  left: -10%;
  width: 45%;
  height: 220%;
  background: linear-gradient(100deg,
    transparent 0%, rgba(255,255,255,0.62) 50%, transparent 100%);
  transform: rotate(24deg) translateX(-140%);
  opacity: 0;
  transition: transform 1s cubic-bezier(.22,.8,.28,1), opacity 1s ease;
  pointer-events: none;
}

.btn:hover::before { transform: rotate(24deg) translateX(420%); opacity: 1; }

/* Hover / Active：上浮 + 投影加深（顶部保持干净，无渐变线） */
.btn:hover {
  transform: translateY(-8px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.95),
    inset 1px 0 0 rgba(255,255,255,0.35),
    inset -1px 0 0 rgba(255,255,255,0.35),
    inset 0 -2px 0 rgba(0,20,60,0.25),
    0 14px 32px rgba(10,30,60,0.25),
    0 36px 72px rgba(10,30,60,0.22);
}
.btn:active { transform: translateY(-3px); }

.btn:focus-visible {
  outline: 3px solid rgba(41,121,255,0.55);
  outline-offset: 3px;
}

/* Primary：保留品牌蓝 + 玻璃质感 */
.btn-primary {
  --glass-bg: rgba(0,82,204,0.72);
  --glass-border: rgba(255,255,255,0.72);
  --glass-text: #ffffff;
  --glass-glow: rgba(0,82,204,0.42);
  background:
    radial-gradient(130% 130% at 0% 0%, rgba(255,255,255,0.28) 0%, transparent 55%),
    radial-gradient(130% 130% at 100% 100%, rgba(41,121,255,0.25) 0%, transparent 55%),
    var(--glass-bg);
}
.btn-primary:hover {
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.7),
    inset 0 -2px 0 rgba(0,20,60,0.3),
    0 14px 32px rgba(0,82,204,0.55),
    0 36px 72px rgba(0,82,204,0.32);
}
.btn-primary:hover svg { transform: translateX(4px); }

/* Secondary / Outline / Ghost：不同透明度玻璃（默认深色字，暗色区块由主题覆盖为浅色字） */
.btn-secondary {
  --glass-bg: rgba(255,255,255,0.28);
  --glass-text: #0a2540;
  --glass-border: rgba(255,255,255,0.55);
}
.btn-secondary:hover { background: rgba(255,255,255,0.22); color: #0a2540; }

.btn-outline {
  --glass-bg: rgba(255,255,255,0.15);
  --glass-text: #0a2540;
  --glass-border: rgba(255,255,255,0.7);
}
.btn-outline:hover { background: rgba(255,255,255,0.24); }

.btn-ghost {
  --glass-bg: rgba(255,255,255,0.12);
  --glass-text: #0a2540;
  --glass-border: rgba(255,255,255,0.12);
  backdrop-filter: blur(10px);
}

.btn-lg { padding: 18px 44px; font-size: 18px; }
.btn-sm { padding: 8px 20px; font-size: 14px; }

/* === 暗色玻璃主题（深色区块 / 暗色主题） === */
.section-dark .btn,
.navbar.dark-theme .btn,
[data-theme="dark"] .btn {
  --glass-bg: rgba(21,29,36,0.5);
  --glass-text: #eaf2ff;
}
.section-dark .btn-primary { --glass-bg: rgba(0,82,204,0.62); --glass-text: #fff; }
.section-dark .btn-secondary { --glass-bg: rgba(255,255,255,0.10); }

@media (prefers-color-scheme: dark) {
  .btn { --glass-bg: rgba(21,29,36,0.42); --glass-text: #eaf2ff; }
}

/* Reduced motion：关闭上浮与流动高光动效 */
@media (prefers-reduced-motion: reduce) {
  .btn { transition: box-shadow .2s ease; }
  .btn:hover { transform: none; }
  .btn:active { transform: none; }
  .btn::before { transition: none; opacity: 0; }
}

/* === Navbar === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition);
  background: rgba(255,255,255,0.72);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.navbar.scrolled {
  background: rgba(255,255,255,0.85);
  box-shadow: var(--shadow-sm);
}

.navbar.dark-theme {
  background: rgba(10,10,15,0.6);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.navbar.dark-theme.scrolled {
  background: rgba(10,10,15,0.85);
}

.nav-container {
  max-width: var(--max-width-wide);
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.logo-img {
  height: 36px;
  width: auto;
  border-radius: 6px;
  display: block;
}

.navbar.dark-theme .logo { color: white; }

.nav-menu {
  display: flex;
  gap: 8px;
  align-items: center;
}

.nav-link {
  padding: 10px 20px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.navbar.dark-theme .nav-link { color: var(--text-light); }

.nav-link:hover {
  color: var(--primary);
  background: rgba(0,102,204,0.06);
}

.navbar.dark-theme .nav-link:hover {
  color: var(--accent);
  background: rgba(0,212,255,0.1);
}

.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}

.navbar.dark-theme .nav-link.active { color: var(--accent); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-btn {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-primary);
  transition: var(--transition);
}

.search-btn svg { width: 20px; height: 20px; }

.search-btn:hover {
  background: rgba(0,0,0,0.06);
  color: var(--primary);
}

.navbar.dark-theme .search-btn { color: var(--text-light); }
.navbar.dark-theme .search-btn:hover { background: rgba(255,255,255,0.1); color: var(--accent); }

.lang-switch {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  background: rgba(0,0,0,0.05);
  border-radius: var(--radius-full);
}

.navbar.dark-theme .lang-switch { background: rgba(255,255,255,0.1); }

.lang-option {
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-secondary);
}

.navbar.dark-theme .lang-option { color: var(--text-light-secondary); }

.lang-option.active {
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.navbar.dark-theme .lang-option.active {
  background: var(--accent);
  color: var(--dark-bg);
}

/* === Language Dropdown === */
.lang-dropdown { position: relative; }

.lang-trigger {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  background: rgba(0,0,0,0.05);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition);
}
.navbar.dark-theme .lang-trigger { background: rgba(255,255,255,0.12); color: var(--text-light); }
.lang-trigger:hover { background: rgba(0,0,0,0.1); }
.navbar.dark-theme .lang-trigger:hover { background: rgba(255,255,255,0.2); }
.lang-trigger .lang-globe { width: 15px; height: 15px; flex-shrink: 0; }
.lang-trigger .lang-chevron { width: 12px; height: 12px; flex-shrink: 0; transition: transform 0.25s ease; }
.lang-dropdown.open .lang-trigger .lang-chevron { transform: rotate(180deg); }

.lang-menu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 137px;
  padding: 5px;
  background: var(--bg-white);
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px) scale(0.98);
  transform-origin: top right;
  transition: opacity 0.22s ease, transform 0.22s ease, visibility 0.22s;
  z-index: 200;
}
.navbar.dark-theme .lang-menu { background: var(--dark-card); border-color: var(--dark-border); }
.lang-dropdown.open .lang-menu { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }

.lang-menu .lang-option {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
  width: 100%;
  padding: 6px 9px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 9px;
  cursor: pointer;
  color: var(--text-primary);
  transition: var(--transition);
  white-space: nowrap;
}
.navbar.dark-theme .lang-menu .lang-option { color: var(--text-light); }
.lang-menu .lang-option:hover { background: rgba(0,0,0,0.05); }
.navbar.dark-theme .lang-menu .lang-option:hover { background: rgba(255,255,255,0.08); }
.lang-menu .lang-option.active { background: var(--primary); color: #fff; box-shadow: var(--shadow-sm); }
.navbar.dark-theme .lang-menu .lang-option.active { background: var(--accent); color: var(--dark-bg); }
.lang-menu .lang-option .lang-en { display: none; }
.lang-menu .lang-option .lang-check { width: 13px; height: 13px; opacity: 0; margin-left: auto; }
.lang-menu .lang-option.active .lang-check { opacity: 1; }

.mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar.dark-theme .mobile-menu-btn span { background: var(--text-light); }

.mobile-menu-btn.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* === Search Overlay === */
.search-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 2000;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

.search-overlay.active {
  opacity: 1;
  visibility: visible;
}

.search-box {
  width: 100%;
  max-width: 680px;
  padding: 0 24px;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 2px solid transparent;
  transition: var(--transition);
}

.search-input-wrap:focus-within {
  border-color: var(--primary);
}

.search-input-wrap svg {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 18px;
  background: transparent;
  color: var(--text-primary);
}

.search-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text-secondary);
  transition: var(--transition);
}

.search-close svg { width: 20px; height: 20px; }
.search-close:hover { background: rgba(0,0,0,0.06); color: var(--text-primary); }

.search-results {
  margin-top: 16px;
  max-height: 400px;
  overflow-y: auto;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.search-result-item:hover { background: rgba(0,102,204,0.06); }

.search-result-tag {
  padding: 2px 10px;
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-full);
  background: rgba(0,102,204,0.1);
  color: var(--primary);
  flex-shrink: 0;
}

.search-result-title { font-size: 15px; font-weight: 500; }
.search-result-desc { font-size: 13px; color: var(--text-secondary); }

.search-hot {
  margin-top: 32px;
}

.search-hot-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.search-hot-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.search-hot-tag {
  padding: 8px 16px;
  background: rgba(0,0,0,0.04);
  border-radius: var(--radius-full);
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.search-hot-tag:hover {
  background: rgba(0,102,204,0.1);
  color: var(--primary);
}

/* === Hero === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bg-dark);
  color: var(--text-light);
}

/* 科技网格纹理，填补背景空旷感 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0,184,255,0.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,184,255,0.055) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.95) 0%, transparent 78%);
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.95) 0%, transparent 78%);
  pointer-events: none;
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 1;
}

#hero-particles-canvas {
  width: 100%;
  height: 100%;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.45;
  z-index: 0;
}

.hero-glow-1 {
  width: 720px;
  height: 720px;
  background: radial-gradient(circle, rgba(0,102,204,0.55) 0%, transparent 70%);
  top: -140px;
  right: -120px;
  animation: glowFloat 8s ease-in-out infinite alternate;
}

.hero-glow-2 {
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(0,212,255,0.42) 0%, transparent 70%);
  bottom: -140px;
  left: -120px;
  animation: glowFloat 10s ease-in-out infinite alternate-reverse;
}

@keyframes glowFloat {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(50px, -30px) scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 980px;
  padding: 0 24px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 11px 26px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 40px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(52, 199, 89, 0.6);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: clamp(48px, 8vw, 92px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 36px;
}

/* === Hero Title Spotlight Shine Effect === */
.hero-title span {
  display: inline-block;
  background-size: 200% 100%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: hero-shine 5s ease-in-out infinite;
}

.hero-title span:not(.highlight) {
  background-image: linear-gradient(
    90deg,
    rgba(255,255,255,0.3) 0%,
    rgba(255,255,255,0.3) 38%,
    #ffffff 47%,
    var(--accent) 50%,
    #ffffff 53%,
    rgba(255,255,255,0.3) 62%,
    rgba(255,255,255,0.3) 100%
  );
}

.hero-title .highlight {
  background-image: linear-gradient(
    90deg,
    rgba(0,184,255,0.25) 0%,
    rgba(0,184,255,0.25) 36%,
    #ffffff 45%,
    var(--accent) 49%,
    var(--primary-light) 51%,
    #ffffff 55%,
    rgba(41,121,255,0.25) 64%,
    rgba(41,121,255,0.25) 100%
  );
  animation-delay: 0.6s;
}

@keyframes hero-shine {
  0% { background-position: -100% 0; }
  75% { background-position: 200% 0; }
  100% { background-position: 200% 0; }
}

.hero-subtitle {
  font-size: clamp(18px, 2.2vw, 22px);
  color: var(--text-light-secondary);
  max-width: 780px;
  margin: 0 auto 52px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 24px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-light-secondary);
  font-size: 12px;
  z-index: 2;
  animation: bounceDown 2s infinite;
}

.hero-scroll svg { width: 20px; height: 20px; }

@keyframes bounceDown {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* === Hero Domain Chips === */
.hero-chips {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 52px;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  color: var(--text-light);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: var(--transition);
}

.hero-chip svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
  flex-shrink: 0;
}

.hero-chip:hover {
  background: rgba(0,184,255,0.14);
  border-color: rgba(0,184,255,0.5);
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0,184,255,0.22);
}

/* === Page Hero === */
.page-hero {
  position: relative;
  padding: calc(var(--nav-height) + 80px) 0 80px;
  background: var(--bg-dark);
  color: var(--text-light);
  overflow: hidden;
}

.page-hero-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.2;
  z-index: 0;
}

.page-hero-glow-1 {
  background: radial-gradient(circle, rgba(0,102,204,0.4) 0%, transparent 70%);
  top: -100px;
  right: 10%;
}

.page-hero-glow-2 {
  background: radial-gradient(circle, rgba(0,212,255,0.3) 0%, transparent 70%);
  bottom: -100px;
  left: 10%;
}

.page-hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.page-hero p {
  font-size: 18px;
  color: var(--text-light-secondary);
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 14px;
  color: var(--text-light-secondary);
}

.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { opacity: 0.5; }

/* === Business Cards === */
.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.business-card {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 4px 12px rgba(0,0,0,0.12), 0 8px 32px rgba(0,0,0,0.10);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.business-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--card-color, var(--primary));
  transform: scaleX(1);
  transform-origin: left;
  z-index: 2;
  opacity: 0.85;
}

.business-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.18), 0 20px 56px rgba(0,0,0,0.14);
  border-color: rgba(0,0,0,0.12);
}

.business-card:hover::before { transform: scaleX(1); }

.business-card-image {
  position: relative;
  width: 100%;
  height: 180px;
  overflow: hidden;
}

.business-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.business-card:hover .business-card-image img {
  transform: scale(1.08);
}

.business-card-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  padding: 16px;
}

.business-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.business-icon svg { width: 24px; height: 24px; color: var(--card-color, var(--primary)); }

.business-card-body {
  padding: 20px 20px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.business-tagline {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--card-color, var(--primary));
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.business-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.business-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  flex: 1;
}

.business-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.business-feature {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  font-size: 11px;
  font-weight: 500;
  border-radius: var(--radius-full);
  background: var(--card-bg, rgba(0,102,204,0.08));
  color: var(--card-color, var(--primary));
  line-height: 1.4;
}

.business-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--card-color, var(--primary));
  transition: var(--transition);
  margin-top: auto;
}

.business-card:hover .business-link { gap: 12px; }

.business-link svg { width: 16px; height: 16px; }

/* === Stats Section === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, var(--accent) 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 15px;
  color: var(--text-light-secondary);
}

/* === Advantages Grid === */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.advantage-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: transform .45s cubic-bezier(.22,.8,.28,1), box-shadow .45s cubic-bezier(.22,.8,.28,1), border-color .3s ease;
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 10px 28px rgba(0,0,0,0.06);
  position: relative;
  overflow: hidden;
}

/* 右上角品牌色装饰点，保持顶部干净（无渐变线/色条） */
.advantage-card::before {
  content: "";
  position: absolute;
  top: 18px;
  right: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.35;
  box-shadow: 0 0 0 4px rgba(0,82,204,0.08);
}

.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.06), 0 18px 44px rgba(0,0,0,0.12);
  border-color: rgba(0,82,204,0.25);
}

.advantage-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.advantage-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.advantage-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === Product Slider === */
.product-slider {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.slider-track {
  display: flex;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.slider-slide {
  min-width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--dark-bg-2);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.slider-slide-image {
  position: relative;
  min-height: 400px;
  background: var(--dark-card);
}

.slider-slide-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.slider-slide-content {
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--text-light);
}

.slider-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(0,212,255,0.15);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
  align-self: flex-start;
}

.slider-slide-content h3 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.slider-slide-content p {
  font-size: 15px;
  color: var(--text-light-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.slider-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.slider-feature {
  padding: 6px 14px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-full);
  font-size: 13px;
  color: var(--text-light-secondary);
}

.slider-controls {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 32px;
}

.slider-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  color: var(--text-primary);
}

.slider-btn:hover {
  background: var(--primary);
  color: white;
  transform: scale(1.1);
}

.slider-btn svg { width: 20px; height: 20px; }

.slider-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 20px;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(0,0,0,0.15);
  cursor: pointer;
  transition: var(--transition);
}

.slider-dot.active {
  background: var(--primary);
  width: 32px;
  border-radius: 4px;
}

/* === Capability Section === */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.capability-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
}

.capability-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.capability-card .icon-wrap {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  margin-bottom: 20px;
}

.capability-card .icon-wrap img {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  object-fit: cover;
}

.capability-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.capability-list { display: flex; flex-direction: column; gap: 12px; }

.capability-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.capability-item .label {
  font-size: 13px;
  color: var(--text-tertiary);
  font-weight: 500;
}

.capability-item .value {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
}

/* === Product Category Tabs === */
.product-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.product-tab {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  background: rgba(0,0,0,0.04);
  transition: var(--transition);
  cursor: pointer;
}

.product-tab:hover { color: var(--text-primary); background: rgba(0,0,0,0.06); }

.product-tab.active {
  background: var(--primary-gradient);
  color: white;
  box-shadow: 0 4px 14px rgba(0,102,204,0.3);
}

/* === Product Cards Grid === */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.product-card-image {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--bg-gray);
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: var(--transition-slow);
  padding: 16px;
}

.product-card:hover .product-card-image img { transform: scale(1.05); }

.product-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

.product-card:hover .product-card-overlay { opacity: 1; }

.product-card-overlay .view-detail {
  color: white;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.product-card-overlay .view-detail svg { width: 16px; height: 16px; }

.product-card-body { padding: 20px 24px 24px; }

.product-card-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(0,102,204,0.08);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 10px;
}

.product-card-body h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.product-card-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.product-card-features {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

.product-card-feature {
  padding: 3px 10px;
  background: rgba(0,0,0,0.04);
  border-radius: var(--radius-full);
  font-size: 12px;
  color: var(--text-tertiary);
}

/* === Product Detail Section === */
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.product-detail-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-gray);
  position: sticky;
  top: calc(var(--nav-height) + 24px);
}

.product-detail-image img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

.product-detail-info h3 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.product-detail-info .tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(0,102,204,0.08);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 16px;
}

.product-detail-info p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

/* === Spec Table === */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.spec-table th {
  background: var(--bg-gray);
  padding: 12px 16px;
  text-align: left;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.spec-table td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid rgba(0,0,0,0.04);
  color: var(--text-secondary);
}

.spec-table tr:last-child td { border-bottom: none; }

.spec-table tr:hover td { background: rgba(0,102,204,0.02); }

/* === Feature List === */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.feature-list-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text-secondary);
}

.feature-list-item .check {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: rgba(52,199,89,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.feature-list-item .check svg { width: 12px; height: 12px; color: var(--green); }

/* === Structure Layers (Product) === */
.structure-layers {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 20px 0;
}

.structure-layer {
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

.structure-layer:hover { transform: translateX(8px); }

.structure-layer .layer-color {
  width: 12px;
  height: 12px;
  border-radius: 3px;
  flex-shrink: 0;
}

/* === Gallery === */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.gallery-item {
  position: relative;
  aspect-ratio: 4/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  background: var(--bg-gray);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: var(--transition-slow);
}

.gallery-item:hover img { transform: scale(1.08); }

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 16px;
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover .gallery-overlay { opacity: 1; }

.gallery-overlay span {
  color: white;
  font-size: 13px;
  font-weight: 500;
}

/* === Timeline === */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--accent), transparent);
}

.timeline-item {
  position: relative;
  padding-bottom: 40px;
}

.timeline-item:last-child { padding-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -28px;
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: white;
  border: 3px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(0,102,204,0.1);
}

.timeline-year {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.timeline-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.timeline-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === Contact Section === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-info-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(0,0,0,0.06);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-info-item:last-child { margin-bottom: 0; }

.contact-info-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,102,204,0.08);
}

.contact-info-icon svg { width: 22px; height: 22px; color: var(--primary); }

.contact-info-item .label {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 2px;
}

.contact-info-item .value {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 500;
}

/* === Contact Form === */
.contact-form {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(0,0,0,0.06);
}

.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid rgba(0,0,0,0.1);
  border-radius: var(--radius-sm);
  font-size: 15px;
  color: var(--text-primary);
  background: var(--bg-gray-2);
  transition: var(--transition);
  outline: none;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 4px rgba(0,102,204,0.08);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-success {
  display: none;
  padding: 16px;
  background: rgba(52,199,89,0.1);
  border: 1px solid rgba(52,199,89,0.3);
  border-radius: var(--radius-sm);
  color: var(--green-dark);
  font-size: 14px;
  margin-top: 16px;
}

.form-success.active { display: block; }

/* === Tech Cards === */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.tech-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid rgba(0,0,0,0.08);
  transition: transform .45s cubic-bezier(.22,.8,.28,1), box-shadow .45s cubic-bezier(.22,.8,.28,1), border-color .3s ease;
  position: relative;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 10px 28px rgba(0,0,0,0.06);
}

.tech-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.06), 0 18px 44px rgba(0,0,0,0.12);
  border-color: rgba(0,82,204,0.25);
}

.tech-card .tech-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(0,82,204,0.10), rgba(0,184,255,0.12));
  border: 1px solid rgba(0,82,204,0.12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.8), 0 6px 16px rgba(0,82,204,0.10);
}

.tech-card .tech-icon svg { width: 28px; height: 28px; color: var(--primary); }

.tech-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.tech-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === Tech Process Steps === */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  counter-reset: step;
}

.process-step {
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 10px 24px rgba(0,0,0,0.05);
  position: relative;
  counter-increment: step;
  transition: transform .45s cubic-bezier(.22,.8,.28,1), box-shadow .45s cubic-bezier(.22,.8,.28,1), border-color .3s ease;
}

.process-step:hover {
  transform: translateY(-5px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.06), 0 16px 36px rgba(0,0,0,0.11);
  border-color: rgba(0,82,204,0.3);
}

.process-step::before {
  content: counter(step);
  position: absolute;
  top: -12px;
  left: 20px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(0,102,204,0.35), inset 0 1px 0 rgba(255,255,255,0.35);
  outline: 3px solid var(--bg-gray);
}
.section-gray .process-step::before { outline-color: var(--bg-gray); }
.section .process-step::before { outline-color: var(--bg-white); }

.process-step h5 {
  font-size: 14px;
  font-weight: 600;
  margin-top: 8px;
  margin-bottom: 4px;
}

.process-step p {
  font-size: 13px;
  color: var(--text-secondary);
}

/* === CTA Section === */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: var(--bg-dark);
  color: var(--text-light);
  overflow: hidden;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,102,204,0.2) 0%, transparent 70%);
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  filter: blur(60px);
}

.cta-section .container { position: relative; z-index: 1; }

.cta-section h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 17px;
  color: var(--text-light-secondary);
  max-width: 500px;
  margin: 0 auto 32px;
}

/* === Footer === */
.footer {
  background: var(--dark-bg);
  color: var(--text-light-secondary);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
  color: var(--text-light);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h5 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.footer-col ul { display: flex; flex-direction: column; gap: 10px; }

.footer-col a {
  font-size: 14px;
  color: var(--text-light-secondary);
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
}

.footer-bottom-links { display: flex; gap: 24px; }

/* === Back to Top === */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary-gradient);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(0,102,204,0.4);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 900;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 8px 28px rgba(0,102,204,0.5);
}

.back-to-top svg { width: 22px; height: 22px; }

/* === Scroll Reveal === */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4,0,0.2,1), transform 0.8s cubic-bezier(0.4,0,0.2,1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* === Image Comparison === */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* 工艺流程对比卡片 */
.process-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05), 0 12px 30px rgba(0,0,0,0.07);
  transition: transform .45s cubic-bezier(.22,.8,.28,1), box-shadow .45s cubic-bezier(.22,.8,.28,1);
}

.process-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 2px 6px rgba(0,0,0,0.06), 0 20px 48px rgba(0,0,0,0.13);
}

.process-card .process-card-label {
  padding: 14px 22px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: linear-gradient(135deg, rgba(0,82,204,0.06), rgba(0,184,255,0.06));
  border-bottom: 1px solid rgba(0,82,204,0.1);
  display: flex;
  align-items: center;
  gap: 8px;
}

.process-card .process-card-label::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.6;
}

.process-card img {
  width: 100%;
  height: auto;
  display: block;
}

.comparison-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--bg-gray);
  border: 1px solid rgba(0,0,0,0.06);
}

.comparison-item .label {
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 600;
  background: white;
  border-bottom: 1px solid rgba(0,0,0,0.06);
}

.comparison-item img {
  width: 100%;
  height: auto;
  object-fit: contain;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 2fr 1fr 1fr; }
  .slider-slide { grid-template-columns: 1fr; }
  .slider-slide-image { min-height: 280px; }
  .product-detail { grid-template-columns: 1fr; }
  .product-detail-image { position: static; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 16px;
    gap: 8px;
    border-bottom: 1px solid rgba(0,0,0,0.06);
    box-shadow: var(--shadow-lg);
  }

  .navbar.dark-theme .nav-menu {
    background: rgba(10,10,15,0.95);
  }

  .nav-menu.active { display: flex; }
  .mobile-menu-btn { display: flex; }

  .section { padding: 60px 0; }
  .business-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .advantages-grid { grid-template-columns: 1fr; }
  .capability-grid { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .tech-grid { grid-template-columns: 1fr; }
  .comparison-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
  .footer-bottom-links { flex-wrap: wrap; justify-content: center; }
  .slider-slide-content { padding: 28px; }
  .product-tabs { gap: 6px; }
  .product-tab { padding: 8px 16px; font-size: 13px; }
  .back-to-top { bottom: 20px; right: 20px; width: 44px; height: 44px; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { justify-content: center; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .container { padding: 0 16px; }
}

/* === Print === */
@media print {
  .navbar, .back-to-top, .search-overlay, .hero-scroll { display: none; }
}