/* ====== 元届象GEO · 高端官网样式 ====== */
/* 深蓝 + 金色 主题 */

:root {
  --navy-900: #060A1A;
  --navy-800: #0A0E27;
  --navy-700: #0D1330;
  --navy-600: #111936;
  --navy-500: #1A2347;
  --navy-400: #252D52;
  --gold-500: #D4AF37;
  --gold-400: #C9A227;
  --gold-300: #E8C547;
  --gold-200: #F0D666;
  --gold-100: rgba(212, 175, 55, 0.1);
  --gold-border: 1px solid rgba(212, 175, 55, 0.3);
  --gold-glow: 0 0 30px rgba(212, 175, 55, 0.15);
  --white: #FFFFFF;
  --gray-100: #F5F5F7;
  --gray-200: #E0E0E6;
  --gray-300: #C0C0CA;
  --gray-400: #9A9AA8;
  --gray-500: #6E6E7E;
  --glass-bg: rgba(13, 19, 48, 0.6);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-gold: 0 8px 32px rgba(212, 175, 55, 0.15);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --max-width: 1280px;
  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--navy-900);
  color: var(--gray-200);
  overflow-x: hidden;
  line-height: 1.7;
}

#particle-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

a { color: inherit; text-decoration: none; transition: color 0.3s; }

/* ====== 通用容器 ====== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.section {
  padding: 100px 0;
  position: relative;
  z-index: 1;
}
.section-dark { background: var(--navy-800); }
.section-darker { background: var(--navy-900); }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-num {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--gold-500);
  letter-spacing: 4px;
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-desc {
  font-size: 16px;
  color: var(--gray-400);
  max-width: 720px;
  margin: 0 auto;
}

.gold-grad {
  background: linear-gradient(135deg, var(--gold-400), var(--gold-200));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ====== 导航栏 ====== */
#navbar {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  padding: 16px 0;
  background: transparent;
  transition: all 0.4s ease;
}
#navbar.scrolled {
  background: rgba(6, 10, 26, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: var(--gold-border);
  padding: 10px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.5);
}
.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
}
.logo-icon {
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
  border-radius: 8px;
  font-size: 18px; font-weight: 900;
  color: var(--navy-900);
}
.logo-sub { color: var(--gold-500); }
.nav-menu {
  display: flex;
  gap: 28px;
  align-items: center;
}
.nav-menu a {
  font-size: 14px;
  color: var(--gray-300);
  font-weight: 400;
  position: relative;
  padding: 4px 0;
}
.nav-menu a:hover { color: var(--gold-500); }
.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--gold-500);
  transition: width 0.3s;
}
.nav-menu a:hover::after { width: 100%; }
.nav-cta { display: flex; align-items: center; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none; border: none;
  cursor: pointer; padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--gold-500);
  transition: 0.3s;
}

/* ====== 按钮 ====== */
.btn-gold-sm {
  display: inline-block;
  padding: 8px 24px;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
  color: var(--navy-900);
  font-size: 14px; font-weight: 600;
  border-radius: 100px;
  transition: all 0.3s;
}
.btn-gold-sm:hover {
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.btn-gold-lg {
  display: inline-block;
  padding: 16px 48px;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
  color: var(--navy-900);
  font-size: 16px; font-weight: 700;
  border-radius: 100px;
  transition: all 0.3s;
  box-shadow: var(--shadow-gold);
}
.btn-gold-lg:hover, .btn-gold-xl:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(212, 175, 55, 0.3);
}
.btn-gold-xl {
  display: inline-block;
  padding: 20px 56px;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
  color: var(--navy-900);
  font-size: 18px; font-weight: 700;
  border-radius: 100px;
  transition: all 0.3s;
  box-shadow: var(--shadow-gold);
}
.btn-outline-lg {
  display: inline-block;
  padding: 16px 48px;
  border: 2px solid var(--gold-500);
  color: var(--gold-500);
  font-size: 16px; font-weight: 600;
  border-radius: 100px;
  transition: all 0.3s;
  background: transparent;
}
.btn-outline-lg:hover {
  background: var(--gold-500);
  color: var(--navy-900);
}

/* ====== Hero ====== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero-bg-gradient {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: radial-gradient(ellipse at center top, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
              radial-gradient(ellipse at bottom, rgba(17, 25, 54, 0.5) 0%, transparent 50%);
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 120px 24px 80px;
}
.hero-badge {
  display: inline-block;
  padding: 8px 24px;
  background: var(--gold-100);
  border: var(--gold-border);
  border-radius: 100px;
  font-size: 13px; font-weight: 500;
  color: var(--gold-500);
  margin-bottom: 16px;
  animation: fadeUp 0.8s ease;
}
.hero-auth-badge {
  display: inline-block;
  padding: 8px 24px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.15), rgba(212, 175, 55, 0.05));
  border: var(--gold-border);
  border-radius: 100px;
  font-size: 12px; font-weight: 600;
  color: var(--gold-300);
  margin-bottom: 32px;
  animation: fadeUp 0.8s ease 0.15s both;
}
.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 900;
  color: var(--white);
  line-height: 1.2;
  margin-bottom: 24px;
  animation: fadeUp 0.8s ease 0.2s both;
}
.hero-subtitle {
  font-size: clamp(15px, 2vw, 20px);
  color: var(--gray-300);
  margin-bottom: 48px;
  animation: fadeUp 0.8s ease 0.3s both;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  animation: fadeUp 0.8s ease 0.4s both;
}
.hero-stat {
  text-align: center;
}
.stat-num {
  font-family: var(--font-serif);
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 900;
  color: var(--gold-500);
  display: inline-block;
}
.stat-suffix {
  font-family: var(--font-serif);
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 700;
  color: var(--gold-500);
  display: inline-block;
}
.stat-label {
  font-size: 14px;
  color: var(--gray-400);
  margin-top: 4px;
}
.hero-cta {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 48px;
  animation: fadeUp 0.8s ease 0.5s both;
}
.hero-platforms {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  animation: fadeUp 0.8s ease 0.6s both;
}
.hero-platforms > span:first-child {
  font-size: 13px;
  color: var(--gray-400);
  margin-right: 8px;
}
.platform-tag {
  padding: 4px 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 100px;
  font-size: 12px;
  color: var(--gray-300);
}
.scroll-indicator {
  position: absolute;
  bottom: 32px; left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.scroll-indicator span {
  display: block;
  width: 24px; height: 42px;
  border: 2px solid var(--gray-400);
  border-radius: 14px;
  position: relative;
}
.scroll-indicator span::after {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  transform: translateX(-50%);
  width: 4px; height: 8px;
  background: var(--gold-500);
  border-radius: 2px;
  animation: scrollDown 1.8s infinite;
}

@keyframes scrollDown {
  0% { opacity: 1; top: 6px; }
  100% { opacity: 0; top: 26px; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ====== 关于元届象 ====== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.about-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
}
.about-card:hover {
  border: var(--gold-border);
  box-shadow: var(--shadow-gold);
  transform: translateY(-4px);
}
.about-icon {
  font-size: 40px;
  margin-bottom: 16px;
}
.about-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--white);
  margin-bottom: 12px;
}
.about-card p {
  font-size: 14px;
  color: var(--gray-400);
  line-height: 1.8;
}
.about-timeline {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 32px;
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
}
.timeline-item {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 180px;
}
.timeline-year {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 900;
  color: var(--gold-500);
  white-space: nowrap;
}
.timeline-text {
  font-size: 13px;
  color: var(--gray-300);
}

/* ====== AI时代 ====== */
.era-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.era-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}
.era-card:hover {
  border: var(--gold-border);
  transform: translateY(-4px);
}
.era-num {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 900;
  color: rgba(212, 175, 55, 0.15);
  position: absolute;
  top: 12px; right: 20px;
}
.era-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--white);
  margin-bottom: 12px;
  position: relative;
}
.era-card p {
  font-size: 14px;
  color: var(--gray-400);
  line-height: 1.8;
  position: relative;
}
.era-bridge {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  overflow-x: auto;
}
.bridge-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--white);
  text-align: center;
  margin-bottom: 24px;
}
.bridge-table {
  display: flex;
  flex-direction: column;
}
.bridge-row {
  display: grid;
  grid-template-columns: 1.5fr 1.5fr 1fr 1fr;
  gap: 16px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  font-size: 14px;
  align-items: center;
}
.bridge-header {
  font-weight: 700;
  color: var(--gold-500);
  border-bottom: var(--gold-border);
}
.status-online {
  display: inline-block;
  padding: 2px 12px;
  background: rgba(34, 197, 94, 0.15);
  color: #4ADE80;
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}

/* ====== 两大业务 ====== */
.business-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.business-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all 0.3s;
  position: relative;
}
.business-card:hover {
  border: var(--gold-border);
  box-shadow: var(--shadow-gold);
  transform: translateY(-4px);
}
.business-icon {
  font-size: 48px;
  margin-bottom: 20px;
}
.business-card h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--white);
  margin-bottom: 12px;
}
.business-tagline {
  font-size: 15px;
  color: var(--gold-500);
  margin-bottom: 16px;
  font-weight: 500;
}
.business-desc {
  font-size: 14px;
  color: var(--gray-400);
  margin-bottom: 24px;
  line-height: 1.8;
}
.business-features {
  list-style: none;
  margin-bottom: 24px;
}
.business-features li {
  padding: 6px 0;
  font-size: 14px;
  color: var(--gray-300);
  padding-left: 24px;
  position: relative;
}
.business-features li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--gold-500);
}

/* ====== GEO优化架构 ====== */
.geo-arch {
  margin-bottom: 64px;
}
.arch-layer {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: all 0.3s;
}
.arch-layer:hover {
  border: var(--gold-border);
}
.arch-tag {
  position: absolute;
  top: -14px; left: 32px;
  padding: 4px 16px;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
  color: var(--navy-900);
  font-size: 12px;
  font-weight: 700;
  border-radius: 100px;
  letter-spacing: 2px;
}
.arch-layer h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--white);
  margin-top: 8px;
  margin-bottom: 24px;
}
.arch-items {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.arch-item {
  padding: 16px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius);
  border-left: 3px solid var(--gold-500);
}
.arch-item strong {
  display: block;
  color: var(--white);
  font-size: 15px;
  margin-bottom: 6px;
}
.arch-item span {
  font-size: 13px;
  color: var(--gray-400);
  line-height: 1.6;
}
.arch-arrow {
  text-align: center;
  font-size: 28px;
  color: var(--gold-500);
  padding: 16px 0;
}
.geo-metrics {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
}
.metrics-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--white);
  text-align: center;
  margin-bottom: 24px;
}
.metrics-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}
.metric-item {
  padding: 12px 24px;
  background: rgba(212, 175, 55, 0.08);
  border: var(--gold-border);
  border-radius: 100px;
  font-size: 14px;
  color: var(--gold-300);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}
.metric-num {
  font-family: var(--font-serif);
  font-weight: 900;
  color: var(--gold-500);
}

/* ====== 商品卡模块 ====== */
.pc-modules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.pc-module {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: all 0.3s;
}
.pc-module:hover {
  border: var(--gold-border);
  transform: translateY(-4px);
}
.pc-icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.pc-module h4 {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--white);
  margin-bottom: 12px;
}
.pc-module p {
  font-size: 13px;
  color: var(--gray-400);
  line-height: 1.7;
}
.pc-coverage {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  margin-bottom: 32px;
}
.coverage-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--white);
  text-align: center;
  margin-bottom: 24px;
}
.coverage-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.coverage-card {
  text-align: center;
  padding: 24px 16px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius);
  transition: all 0.3s;
}
.coverage-card:hover {
  background: var(--gold-100);
  border: var(--gold-border);
}
.coverage-ai {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 8px;
}
.coverage-eco {
  font-size: 14px;
  color: var(--gold-500);
  margin-bottom: 12px;
}
.coverage-card p {
  font-size: 12px;
  color: var(--gray-400);
}
.pc-alert {
  background: rgba(212, 175, 55, 0.08);
  border: var(--gold-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: center;
}
.pc-alert p {
  font-size: 14px;
  color: var(--gold-300);
}
.pc-alert strong {
  color: var(--gold-500);
}

/* ====== 五大产品 ====== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: all 0.3s;
  position: relative;
}
.product-card:hover {
  border: var(--gold-border);
  box-shadow: var(--shadow-gold);
  transform: translateY(-4px);
}
.product-num {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 900;
  color: rgba(212, 175, 55, 0.12);
  position: absolute;
  top: 16px; right: 24px;
}
.product-card h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--white);
  margin-bottom: 8px;
  position: relative;
}
.product-tag {
  font-size: 13px;
  color: var(--gold-500);
  margin-bottom: 16px;
  font-weight: 500;
}
.product-desc {
  font-size: 13px;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 16px;
}
.product-price {
  font-size: 14px;
  color: var(--gold-300);
  font-weight: 600;
  padding-top: 16px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

/* ====== 核心优势 ====== */
.adv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.adv-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: all 0.3s;
}
.adv-card:hover {
  border: var(--gold-border);
  transform: translateY(-4px);
}
.adv-icon {
  font-size: 36px;
  margin-bottom: 16px;
}
.adv-card h4 {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--white);
  margin-bottom: 12px;
}
.adv-card p {
  font-size: 13px;
  color: var(--gray-400);
  line-height: 1.7;
}

/* ====== 技术团队 ====== */
.team-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 64px;
}
.team-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  transition: all 0.3s;
}
.team-card:hover {
  border: var(--gold-border);
  box-shadow: var(--shadow-gold);
}
.team-avatar {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 900;
  color: var(--navy-900);
  margin-bottom: 20px;
}
.team-card h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  color: var(--white);
}
.team-role {
  font-size: 16px;
  color: var(--gold-500);
  margin-bottom: 4px;
  font-weight: 600;
}
.team-bg {
  font-size: 14px;
  color: var(--gray-400);
  margin-bottom: 20px;
}
.team-detail p {
  font-size: 14px;
  color: var(--gray-300);
  margin-bottom: 12px;
  line-height: 1.7;
}
.team-detail strong {
  color: var(--gold-300);
}
.team-dna {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
}
.dna-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--white);
  text-align: center;
  margin-bottom: 24px;
}
.dna-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.dna-item {
  text-align: center;
}
.dna-item strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--gold-500);
  margin-bottom: 8px;
}
.dna-item span {
  font-size: 13px;
  color: var(--gray-400);
}

/* ====== 案例 ====== */
.cases-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 64px;
}
.case-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  transition: all 0.3s;
}
.case-card:hover {
  border: var(--gold-border);
}
.case-tag {
  display: inline-block;
  padding: 4px 16px;
  background: var(--gold-100);
  border: var(--gold-border);
  border-radius: 100px;
  font-size: 12px;
  color: var(--gold-500);
  margin-bottom: 16px;
}
.case-card h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--white);
  margin-bottom: 20px;
}
.case-pain, .case-action {
  font-size: 14px;
  color: var(--gray-300);
  margin-bottom: 12px;
  line-height: 1.7;
}
.case-pain strong, .case-action strong {
  color: var(--gold-300);
}
.case-results {
  display: flex;
  gap: 32px;
  margin: 20px 0;
  flex-wrap: wrap;
}
.result-item {
  text-align: center;
}
.result-num {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 900;
  color: var(--gold-500);
}
.result-label {
  font-size: 12px;
  color: var(--gray-400);
}
.case-quote {
  font-style: italic;
  color: var(--gold-300);
  font-size: 14px;
  border-left: 3px solid var(--gold-500);
  padding-left: 16px;
  margin-top: 16px;
}
.industry-cases {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
}
.industry-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--white);
  text-align: center;
  margin-bottom: 24px;
}
.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.industry-card {
  text-align: center;
  padding: 24px;
  background: rgba(255,255,255,0.03);
  border-radius: var(--radius);
}
.industry-card h4 {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--white);
  margin-bottom: 12px;
}
.industry-card p {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 8px;
}
.industry-data {
  font-size: 16px;
  color: var(--gold-500);
  font-weight: 600;
}
.industry-data strong {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 900;
}

/* ====== 定价 ====== */
.pricing-block {
  margin-bottom: 64px;
}
.pricing-block-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--gold-500);
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 16px;
  border-bottom: var(--gold-border);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pricing-grid-4 {
  grid-template-columns: repeat(4, 1fr);
}
.price-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
  position: relative;
}
.price-card:hover {
  border: var(--gold-border);
  transform: translateY(-4px);
}
.price-featured {
  border: 2px solid var(--gold-500);
  box-shadow: var(--shadow-gold);
}
.price-badge {
  position: absolute;
  top: -12px; left: 50%;
  transform: translateX(-50%);
  padding: 4px 20px;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
  color: var(--navy-900);
  font-size: 12px; font-weight: 700;
  border-radius: 100px;
}
.price-tag {
  font-size: 16px;
  color: var(--gold-300);
  font-weight: 600;
  margin-bottom: 12px;
}
.price-amount {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 900;
  color: var(--white);
  margin-bottom: 8px;
}
.price-unit {
  font-size: 16px;
  font-weight: 400;
  color: var(--gray-400);
}
.price-desc {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 20px;
  min-height: 40px;
}
.price-features {
  list-style: none;
  text-align: left;
  margin-bottom: 20px;
}
.price-features li {
  padding: 6px 0;
  font-size: 13px;
  color: var(--gray-300);
  padding-left: 24px;
  position: relative;
}
.price-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--gold-500);
  font-weight: 700;
}
.price-add {
  font-size: 12px;
  color: var(--gold-300);
  padding-top: 12px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.pricing-note {
  text-align: center;
  font-size: 13px;
  color: var(--gray-500);
  margin-top: 16px;
}

/* ====== GEO技术 ====== */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.tech-card {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s;
}
.tech-card:hover {
  border: var(--gold-border);
  transform: translateY(-4px);
}
.tech-icon {
  font-size: 32px;
  margin-bottom: 12px;
}
.tech-card h4 {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--white);
  margin-bottom: 8px;
}
.tech-card p {
  font-size: 12px;
  color: var(--gray-400);
  line-height: 1.6;
}

/* ====== FAQ ====== */
.faq-container {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--glass-bg);
  border: var(--glass-border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.3s;
}
.faq-item.active {
  border: var(--gold-border);
}
.faq-question {
  padding: 20px 24px;
  font-size: 15px;
  color: var(--white);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 16px;
  font-weight: 500;
}
.faq-q-icon {
  color: var(--gold-500);
  font-size: 20px;
  font-weight: 700;
  transition: transform 0.3s;
  display: inline-block;
  min-width: 20px;
}
.faq-item.active .faq-q-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 24px 20px 60px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--gray-300);
  line-height: 1.8;
}
.faq-answer strong {
  color: var(--gold-300);
}

/* ====== CTA ====== */
.section-cta {
  background: linear-gradient(135deg, var(--navy-800), var(--navy-600));
  padding: 100px 0;
  position: relative;
  z-index: 1;
}
.cta-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}
.cta-subtitle {
  font-size: 16px;
  color: var(--gray-400);
  margin-bottom: 40px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.cta-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  text-align: left;
}
.cta-info-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.cta-label {
  font-size: 12px;
  color: var(--gray-500);
}
.cta-value {
  font-size: 15px;
  color: var(--gray-200);
  font-weight: 500;
}

/* ====== Footer ====== */
.footer {
  background: var(--navy-900);
  padding: 60px 0 24px;
  position: relative;
  z-index: 1;
  border-top: var(--gold-border);
}
.footer-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 4px;
}
.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--gold-500);
  margin-bottom: 16px;
}
.footer-col a, .footer-col p {
  display: block;
  font-size: 13px;
  color: var(--gray-400);
  margin-bottom: 8px;
  transition: color 0.3s;
}
.footer-col a:hover { color: var(--gold-500); }
.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-bottom p {
  font-size: 13px;
  color: var(--gray-500);
  margin-bottom: 4px;
}
.footer-auth {
  color: var(--gold-500) !important;
  font-weight: 500;
}
.footer-seo {
  font-size: 12px !important;
}

/* ====== 浮动咨询 ====== */
.float-consult {
  position: fixed;
  bottom: 32px; right: 32px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: linear-gradient(135deg, var(--gold-400), var(--gold-300));
  border-radius: 100px;
  color: var(--navy-900);
  font-weight: 700;
  box-shadow: var(--shadow-gold);
  transition: all 0.3s;
}
.float-consult:hover {
  transform: translateY(-3px) scale(1.05);
}
.float-icon { font-size: 20px; }
.float-text { font-size: 14px; }

/* ====== 滚动动画 ====== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ====== 响应式 ====== */
@media (max-width: 1024px) {
  .about-grid, .era-grid { grid-template-columns: repeat(2, 1fr); }
  .pc-modules, .products-grid, .adv-grid, .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .coverage-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-grid, .pricing-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .dna-grid { grid-template-columns: 1fr; }
  .nav-menu { display: none; }
  .nav-toggle { display: flex; }
  .nav-menu.active {
    display: flex;
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--navy-900);
    padding: 20px;
    gap: 12px;
    border-bottom: var(--gold-border);
  }
  .bridge-row { grid-template-columns: 1fr 1fr; }
  .arch-items { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .about-grid, .era-grid, .pc-modules, .products-grid, .adv-grid, .tech-grid,
  .pricing-grid, .pricing-grid-4, .coverage-grid, .cases-grid, .team-grid,
  .business-grid, .industry-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 24px; }
  .cta-info { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .btn-gold-lg, .btn-gold-xl, .btn-outline-lg { width: 100%; text-align: center; }
  .nav-cta { display: none; }
  .float-consult { bottom: 16px; right: 16px; padding: 10px 20px; }
  .timeline-item { min-width: 100%; }
}