/* ========================================
   五合云RFID官网 - 品牌一体化设计系统 v5.1
   基于真实logo色彩：暖橙 + 流金 + 炭灰
   设计理念：工业精度 × 品牌温度
   ======================================== */

/* === CSS Variables === */
:root {
  /* 品牌主色 - 从logo提取：暖橙色 */
  --primary: #D4873C;
  --primary-dark: #B86F2E;
  --primary-darker: #8F5520;
  --primary-light: #FDF0E3;
  --primary-lighter: #FEF7F0;

  /* 强调色 - 从logo提取：流金色 */
  --accent: #C9A73C;
  --accent-dark: #A88A2F;
  --accent-light: #FBF5E3;
  --accent-glow: rgba(201, 167, 60, 0.3);

  /* Logo色阶 - 用于签名元素和渐变 */
  --logo-charcoal: #2D2D2D;
  --logo-gray: #7C7C7C;
  --logo-orange: #D4873C;
  --logo-gold: #C9A73C;
  --logo-light-orange: #E8A85C;
  --logo-light-gold: #DBC470;

  /* 信号/扫描色 - 暖调科技 */
  --signal-1: #D4873C;
  --signal-2: #C9963A;
  --signal-3: #C9A73C;
  --signal-4: #B89A3B;

  /* 功能色 */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;

  /* 中性色 - 炭灰基调 */
  --text-primary: #2D2D2D;
  --text-secondary: #4A4A4A;
  --text-muted: #7C7C7C;
  --text-white: #FFFFFF;

  /* 背景色 */
  --bg-white: #FFFFFF;
  --bg-gray: #FAF8F5;
  --bg-dark: #1F1F1F;
  --bg-darker: #141414;
  --bg-card: #FFFFFF;

  /* 边框 */
  --border: #E8E4DF;
  --border-light: #F3F0EC;
  --border-focus: var(--primary);

  /* 阴影 - 暖调阴影 */
  --shadow-xs: 0 1px 2px rgba(45, 45, 45, 0.05);
  --shadow-sm: 0 2px 4px rgba(45, 45, 45, 0.06), 0 1px 2px rgba(45, 45, 45, 0.04);
  --shadow: 0 4px 12px rgba(45, 45, 45, 0.08), 0 2px 4px rgba(45, 45, 45, 0.04);
  --shadow-md: 0 8px 24px rgba(45, 45, 45, 0.1), 0 4px 8px rgba(45, 45, 45, 0.06);
  --shadow-lg: 0 16px 48px rgba(45, 45, 45, 0.12), 0 8px 16px rgba(45, 45, 45, 0.08);
  --shadow-xl: 0 24px 64px rgba(45, 45, 45, 0.16), 0 12px 24px rgba(45, 45, 45, 0.1);
  --shadow-glow: 0 0 24px rgba(212, 135, 60, 0.2), 0 0 48px rgba(212, 135, 60, 0.1);

  /* 圆角 - 稍小更工业感 */
  --radius-sm: 4px;
  --radius: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* 间距 */
  --max-w: 1280px;
  --max-w-narrow: 900px;

  /* 字体 - 国内友好系统字体栈 */
  --font-display: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Consolas", "Source Code Pro", monospace;

  /* 过渡 */
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

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

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -0.03em;
}

h1 { font-size: 3.75rem; font-weight: 800; }
h2 { font-size: 2.75rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.lead {
  font-size: 1.25rem;
  line-height: 1.8;
  max-width: 640px;
}

/* 技术感等宽文本 */
.mono {
  font-family: var(--font-mono);
  font-size: 0.875em;
  letter-spacing: 0.02em;
}

/* === Links === */
a {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
}
a:hover { color: var(--primary-dark); }

/* === Images === */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* === Lists === */
ul, ol { list-style: none; }

/* === Layout === */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.container-narrow {
  max-width: var(--max-w-narrow);
  margin: 0 auto;
  padding: 0 2rem;
}

/* === Header === */
.header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow);
  border-bottom-color: transparent;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  position: relative;
  height: 48px;
}

.logo img {
  height: 42px;
  width: auto;
  display: block;
  transition: var(--transition);
}

.logo:hover img {
  transform: scale(1.02);
}

/* 备用：当没有logo图片时使用图标+文字 */
.logo-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: none;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
  position: relative;
  overflow: hidden;
}

/* Logo六边形微标 - 基于logo几何元素 */
.logo-hex {
  width: 40px;
  height: 44px;
  display: none;
  align-items: center;
  justify-content: center;
}

.logo-hex svg {
  width: 100%;
  height: 100%;
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav a {
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 1px;
}

.nav a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

.nav a:hover::after {
  width: 60%;
}

.nav a.active {
  color: var(--primary);
  background: var(--primary-light);
}

.nav a.active::after {
  width: 60%;
}

.nav-cta {
  background: var(--primary) !important;
  color: var(--text-white) !important;
  font-weight: 600 !important;
  padding: 0.5rem 1.25rem !important;
  margin-left: 0.5rem;
}

.nav-cta::after {
  display: none !important;
}

.nav-cta:hover {
  background: var(--primary-dark) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text-primary);
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  cursor: pointer;
  line-height: 1.5;
  position: relative;
  overflow: hidden;
}

/* 按钮光泽效果 */
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-white);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--text-white);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: var(--bg-white);
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background: var(--primary);
  color: var(--text-white);
  transform: translateY(-2px);
}

.btn-white {
  background: var(--bg-white);
  color: var(--primary);
}

.btn-white:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline-white {
  background: transparent;
  color: var(--text-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-white:hover {
  background: var(--text-white);
  color: var(--primary);
  border-color: var(--text-white);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

/* === Hero Section - 签名设计：六边形扫描场 === */
.hero {
  background: linear-gradient(135deg, #1F1F1F 0%, #2D2D2D 50%, #1A1A1A 100%);
  color: var(--text-white);
  padding: 6rem 0 8rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* 六边形网格背景 - 签名元素，呼应logo几何图形 */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 25% 35%, rgba(212, 135, 60, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 75% 65%, rgba(201, 167, 60, 0.08) 0%, transparent 40%),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='60' height='104' viewBox='0 0 60 104'%3E%3Cpath d='M30 0 L60 17.3 L60 52 L30 69.3 L0 52 L0 17.3 Z' fill='none' stroke='rgba(212,135,60,0.04)' stroke-width='1'/%3E%3Cpath d='M30 34.7 L60 52 L60 86.7 L30 104 L0 86.7 L0 52 Z' fill='none' stroke='rgba(212,135,60,0.04)' stroke-width='1'/%3E%3C/svg%3E");
  background-size: cover, cover, 80px auto;
  opacity: 0.8;
  pointer-events: none;
}

/* 六边形扫描光环动画 */
.hero::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 500px;
  height: 500px;
  background: linear-gradient(135deg, rgba(212, 135, 60, 0.1) 0%, rgba(201, 167, 60, 0.05) 50%, transparent 70%);
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  animation: hexScan 6s ease-in-out infinite;
  pointer-events: none;
}

@keyframes hexScan {
  0%, 100% {
    transform: translate(-50%, -50%) scale(0.8) rotate(0deg);
    opacity: 0.3;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.3) rotate(3deg);
    opacity: 0.1;
  }
}

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

/* 六边形品牌装饰 */
.hero-hex-marks {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.hero-hex {
  position: absolute;
  width: 160px;
  height: auto;
  opacity: 0.6;
}

.hero-hex-1 {
  top: 10%;
  right: 8%;
  animation: hexFloat 8s ease-in-out infinite;
}

.hero-hex-2 {
  bottom: 15%;
  left: 6%;
  width: 120px;
  animation: hexFloat 10s ease-in-out infinite reverse;
}

@keyframes hexFloat {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-12px) rotate(2deg); }
}

@media (max-width: 768px) {
  .hero-hex {
    width: 100px;
    opacity: 0.4;
  }
  .hero-hex-1 { right: 2%; top: 5%; }
  .hero-hex-2 { left: 2%; bottom: 10%; }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 2rem;
  border: 1px solid rgba(212, 135, 60, 0.2);
  letter-spacing: 0.02em;
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.6; transform: scale(0.8); }
}

.hero h1 {
  color: var(--text-white);
  font-size: 4.25rem;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, #fff 0%, #F5E6D3 50%, #D4873C 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 2.5rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-bottom: 4rem;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  padding-top: 3rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stat {
  text-align: center;
  position: relative;
}

/* 统计数字 - 等宽字体体现技术感 */
.hero-stat .num {
  display: block;
  font-family: var(--font-mono);
  font-size: 2.75rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: 0.5rem;
  background: linear-gradient(135deg, var(--signal-1), var(--signal-3));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.hero-stat .label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* === Section === */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-sm {
  padding: 4rem 0;
}

.section-gray {
  background: var(--bg-gray);
}

.section-dark {
  background: var(--bg-dark);
  color: var(--text-white);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--text-white);
}

.section-dark p {
  color: rgba(255, 255, 255, 0.7);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--primary-light);
  color: var(--primary);
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* 标签前的装饰点 */
.section-label::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--primary);
  border-radius: 50%;
}

.section-title {
  font-size: 2.75rem;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* === Features Grid === */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}

/* 卡片顶部渐变条 */
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--signal-1), var(--signal-4));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-slow);
}

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

.feature-card:hover {
  border-color: rgba(212, 135, 60, 0.35);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

/* SVG图标容器 */
.feature-icon {
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  position: relative;
}

.feature-icon svg {
  width: 28px;
  height: 28px;
  color: var(--primary);
  stroke-width: 1.5;
}

/* 图标光晕效果 */
.feature-icon::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(212, 135, 60, 0.12), rgba(201, 167, 60, 0.1));
  opacity: 0;
  transition: var(--transition);
  z-index: -1;
}

.feature-card:hover .feature-icon::after {
  opacity: 1;
}

.feature-title {
  font-size: 1.125rem;
  margin-bottom: 0.625rem;
  font-weight: 600;
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Cards Grid === */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: var(--transition);
  position: relative;
}

.card:hover {
  border-color: rgba(212, 135, 60, 0.35);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1.25rem;
  line-height: 1;
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  font-weight: 600;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.card-price {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.card-price .currency {
  font-size: 1rem;
  vertical-align: super;
  font-weight: 600;
}

.card-price .period {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--text-muted);
  font-family: var(--font-body);
}

/* === Cases Grid === */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.case-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-slow);
}

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

.case-header {
  background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

/* 案例卡片装饰 */
.case-header::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(212, 135, 60, 0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.case-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--primary);
  color: var(--text-white);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.case-name {
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.case-body {
  padding: 1.5rem;
}

.case-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.75;
}

.case-stats {
  display: flex;
  gap: 2rem;
}

.case-stat-num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  letter-spacing: -0.02em;
}

.case-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.375rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* === Stats Grid === */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.stat-card::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  opacity: 0;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: rgba(212, 135, 60, 0.35);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* === Partners === */
.partners-grid {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.partner-item {
  padding: 0.875rem 1.75rem;
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
  font-size: 0.9375rem;
}

.partner-item:hover {
  background: var(--primary-light);
  border-color: rgba(212, 135, 60, 0.35);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* === CTA Section === */
.cta-section {
  background: var(--bg-dark);
  color: var(--text-white);
  padding: 5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* CTA背景信号波 */
.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 800px;
  background:
    radial-gradient(circle at 40% 45%, rgba(212, 135, 60, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 60% 55%, rgba(201, 167, 60, 0.1) 0%, transparent 40%);
  pointer-events: none;
}

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

.cta-section h2 {
  color: var(--text-white);
  font-size: 2.75rem;
  margin-bottom: 1rem;
  letter-spacing: -0.03em;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 1.125rem;
  margin-bottom: 2rem;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
}

/* === Footer === */
.footer {
  background: var(--bg-darker);
  color: rgba(255, 255, 255, 0.7);
  padding: 5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1.5rem;
  text-decoration: none;
  height: 48px;
}

.footer-logo img {
  height: 40px;
  width: auto;
  display: block;
  transition: var(--transition);
  filter: brightness(1.1);
}

.footer-logo:hover img {
  transform: scale(1.02);
}

.footer-logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: var(--radius);
  display: none;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.25rem;
}

.footer-logo-text {
  display: none;
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--text-white);
  letter-spacing: -0.02em;
}

.footer-logo-text span {
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.footer-desc {
  font-size: 0.9375rem;
  line-height: 1.75;
  max-width: 320px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-white);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.9375rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--text-white);
}

.copyright {
  text-align: center;
}

.copyright p {
  font-size: 14px;
  line-height: 1.8;
  font-weight: 400;
  padding: 20px 0;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.copyright a {
  color: #007bff;
  text-decoration: none;
  margin: 0 10px;
}

.copyright a:hover {
  color: #0056b3;
  text-decoration: underline;
}

.mb-0 {
  margin-bottom: 0;
}

/* === Breadcrumb === */
.breadcrumb {
  background: var(--bg-gray);
  padding: 0.875rem 0;
  border-bottom: 1px solid var(--border);
}

.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
}

.breadcrumb a {
  color: var(--text-muted);
}

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

.breadcrumb .separator {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.breadcrumb .current {
  color: var(--text-primary);
  font-weight: 500;
}

/* === FAQ === */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 0.625rem;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(212, 135, 60, 0.35);
}

.faq-question {
  padding: 1.125rem 1.5rem;
  background: var(--bg-white);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition);
  font-size: 0.9375rem;
}

.faq-question:hover {
  background: var(--primary-lighter);
}

.faq-question::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--primary);
  font-weight: 300;
  transition: var(--transition);
  font-family: var(--font-mono);
}

.faq-item.active .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-item.active .faq-answer {
  padding: 0 1.5rem 1.25rem;
  max-height: 500px;
}

.faq-answer p {
  color: var(--text-secondary);
  line-height: 1.75;
  font-size: 0.9375rem;
}

/* === Value List === */
.value-list {
  list-style: none;
}

.value-list li {
  padding: 0.75rem 0;
  padding-left: 2rem;
  position: relative;
  color: var(--text-secondary);
}

.value-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  background: var(--accent-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.value-list li::after {
  content: '✓';
  position: absolute;
  left: 4px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-weight: 700;
  font-size: 0.75rem;
}

/* === Table === */
.table-wrapper {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 1rem 1.5rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

th {
  background: var(--bg-gray);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

tr:hover {
  background: var(--primary-lighter);
}

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

/* === Responsive === */
@media (max-width: 1024px) {
  h1 { font-size: 2.75rem; }
  h2 { font-size: 2.25rem; }

  .features-grid,
  .cards-grid,
  .cases-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }

  .hero {
    padding: 4rem 0 5rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero-subtitle {
    font-size: 1.0625rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 2rem;
  }

  .hero-stat .num {
    font-size: 2.25rem;
  }

  .section {
    padding: 4rem 0;
  }

  .section-title {
    font-size: 2rem;
  }

  .features-grid,
  .cards-grid,
  .cases-grid,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .mobile-menu-btn {
    display: block;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-white);
    flex-direction: column;
    padding: 0.75rem;
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    display: block;
    padding: 0.75rem 1rem;
  }

  .nav-cta {
    margin-left: 0 !important;
    text-align: center;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .copyright p {
    font-size: 12px;
    line-height: 20px;
  }

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1.25rem;
  }

  .hero {
    padding: 3rem 0 4rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 1.5rem;
  }

  .hero-stat .num {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .cta-section h2 {
    font-size: 2rem;
  }
}

/* === Animations === */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-24px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-fade-in {
  animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-slide-in-left {
  animation: slideInLeft 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }
.delay-5 { animation-delay: 0.5s; }

/* === Scroll Animations (需要JS配合) === */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-animate].animated {
  opacity: 1;
  transform: translateY(0);
}

/* === Selection === */
::selection {
  background: var(--primary);
  color: var(--text-white);
}

/* === Focus Styles === */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* === Scrollbar === */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}