/* ========================================
   银联商务电签机 - 深铁灰安现风格
   ======================================== */

/* CSS变量定义 */
:root {
  /* 主色调 */
  --ums-iron: #1E2228;
  --ums-iron-light: #2E3238;
  --ums-iron-dark: #141618;

  /* 功能色 */
  --safe-green: #10B981;
  --safe-green-light: #34D399;
  --safe-green-dark: #059669;

  --cash-gold: #F59E0B;
  --cash-gold-light: #FBBF24;
  --cash-gold-dark: #D97706;

  /* 中性色 */
  --bg-page: #EBECEE;
  --bg-white: #FFFFFF;
  --text-dark: #0C0E12;
  --text-body: #334155;
  --text-muted: #64748B;
  --border-color: #E2E8F0;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* 字体 */
  --font-cn: 'Noto Sans SC', sans-serif;
  --font-en: 'DM Sans', sans-serif;

  /* 间距 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* 圆角 */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
}

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

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

body {
  font-family: var(--font-cn);
  background-color: var(--bg-page);
  color: var(--text-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

ul, ol {
  list-style: none;
}

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

/* ========================================
   导航栏
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-white);
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: 0 2px 10px rgba(30, 34, 40, 0.1);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 70px;
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  color: var(--ums-iron);
  font-weight: 700;
  font-size: 1.25rem;
}

.navbar-logo svg {
  width: 36px;
  height: 36px;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-link {
  color: var(--text-body);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--safe-green);
  transition: width var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--ums-iron);
}

.nav-cta {
  background: linear-gradient(135deg, var(--safe-green), var(--safe-green-dark));
  color: var(--bg-white);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  color: var(--bg-white);
}

/* 汉堡菜单 */
.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  cursor: pointer;
  background: none;
  border: none;
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ums-iron);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 70px;
  left: 0;
  right: 0;
  background: var(--bg-white);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-lg);
}

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

.mobile-nav-link {
  display: block;
  padding: var(--spacing-md) 0;
  color: var(--text-body);
  font-weight: 500;
  border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link:last-child {
  border-bottom: none;
}

.mobile-cta {
  display: block;
  margin-top: var(--spacing-lg);
  background: linear-gradient(135deg, var(--safe-green), var(--safe-green-dark));
  color: var(--bg-white);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  text-align: center;
  font-weight: 600;
}

/* ========================================
   Hero 区域
   ======================================== */
.hero {
  position: relative;
  padding: 140px 0 80px;
  background: linear-gradient(135deg, var(--ums-iron) 0%, var(--ums-iron-light) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(circle at 20% 80%, rgba(16, 185, 129, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
  animation: heroGradient 15s ease infinite alternate;
}

@keyframes heroGradient {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 100% 50%;
  }
}

.hero-container {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
  text-align: center;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  background: rgba(16, 185, 129, 0.15);
  color: var(--safe-green-light);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  font-size: 3rem;
  font-weight: 700;
  color: var(--bg-white);
  margin-bottom: var(--spacing-lg);
  line-height: 1.2;
}

.hero-title .highlight {
  background: linear-gradient(135deg, var(--safe-green), var(--cash-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: linear-gradient(135deg, var(--safe-green), var(--safe-green-dark));
  color: var(--bg-white);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.4);
  color: var(--bg-white);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: transparent;
  color: var(--bg-white);
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid var(--bg-white);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.btn-secondary:hover {
  background: var(--bg-white);
  color: var(--ums-iron);
}

/* Hero 安绿风格变体 */
.hero.safe-green-bg {
  background: linear-gradient(135deg, var(--safe-green-dark) 0%, var(--safe-green) 100%);
}

.hero.safe-green-bg::before {
  background:
    radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.hero.safe-green-bg .hero-badge {
  background: rgba(255, 255, 255, 0.2);
  color: var(--bg-white);
}

/* Hero 现金风格变体 */
.hero.cash-gold-bg {
  background: linear-gradient(135deg, var(--cash-gold-dark) 0%, var(--cash-gold) 100%);
}

.hero.cash-gold-bg::before {
  background:
    radial-gradient(circle at 30% 70%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.hero.cash-gold-bg .hero-badge {
  background: rgba(255, 255, 255, 0.2);
  color: var(--bg-white);
}

/* ========================================
   通用区块
   ======================================== */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--ums-iron);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-muted);
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

/* ========================================
   安现板块（左图右文）
   ======================================== */
.anxian-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.anxian-image {
  background: linear-gradient(135deg, var(--ums-iron) 0%, var(--ums-iron-light) 100%);
  border-radius: var(--radius-xl);
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.anxian-image::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 30% 70%, rgba(16, 185, 129, 0.3) 0%, transparent 40%),
    radial-gradient(circle at 70% 30%, rgba(245, 158, 11, 0.2) 0%, transparent 40%);
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% {
    transform: translate(0, 0) rotate(0deg);
  }
  25% {
    transform: translate(2%, 2%) rotate(1deg);
  }
  50% {
    transform: translate(0, 4%) rotate(0deg);
  }
  75% {
    transform: translate(-2%, 2%) rotate(-1deg);
  }
}

.anxian-image-text {
  position: relative;
  z-index: 1;
  color: var(--bg-white);
  text-align: center;
}

.anxian-image-text svg {
  width: 120px;
  height: 120px;
  margin-bottom: var(--spacing-md);
}

.anxian-content h3 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--ums-iron);
  margin-bottom: var(--spacing-lg);
}

.anxian-content p {
  font-size: 1.125rem;
  color: var(--text-body);
  line-height: 1.8;
}

.anxian-content .highlight {
  color: var(--safe-green);
  font-weight: 700;
}

/* ========================================
   安全可靠板块（错落卡片）
   ======================================== */
.safety-cards {
  display: flex;
  gap: var(--spacing-lg);
  justify-content: center;
}

.safety-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.safety-card:nth-child(1) {
  width: 55%;
}

.safety-card:nth-child(2) {
  width: 43%;
}

.safety-card-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(16, 185, 129, 0.05));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

.safety-card-icon svg {
  width: 32px;
  height: 32px;
  color: var(--safe-green);
}

.safety-card h4 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ums-iron);
  margin-bottom: var(--spacing-sm);
}

.safety-card p {
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.safety-card .big-number {
  font-size: 3rem;
  font-weight: 700;
  font-family: var(--font-en);
  color: var(--safe-green);
  line-height: 1;
  margin-bottom: var(--spacing-sm);
}

/* 3列安全卡片 */
.safety-cards-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.safety-card-3 {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.safety-card-3:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* 错落布局变体 */
.safety-cards-staggered {
  display: flex;
  gap: var(--spacing-lg);
  align-items: flex-start;
}

.safety-card-staggered:nth-child(1) {
  width: 40%;
}

.safety-card-staggered:nth-child(2) {
  width: 30%;
  margin-top: var(--spacing-2xl);
}

.safety-card-staggered:nth-child(3) {
  width: 26%;
  margin-top: var(--spacing-xl);
}

/* 背景色块卡片 */
.safety-card-bg {
  background: linear-gradient(135deg, var(--ums-iron) 0%, var(--ums-iron-light) 100%);
  color: var(--bg-white);
}

.safety-card-bg h4 {
  color: var(--bg-white);
}

.safety-card-bg p {
  color: rgba(255, 255, 255, 0.8);
}

/* ========================================
   激活返现板块
   ======================================== */
.cashback-section {
  text-align: left;
}

.cashback-header {
  margin-bottom: var(--spacing-2xl);
}

.cashback-header h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--ums-iron);
  margin-bottom: var(--spacing-md);
}

.cashback-header .highlight {
  color: var(--cash-gold);
}

.cashback-header p {
  font-size: 1.125rem;
  color: var(--text-body);
}

.cashback-items {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

.cashback-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
}

.cashback-icon {
  width: 64px;
  height: 64px;
  min-width: 64px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1), rgba(245, 158, 11, 0.05));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.cashback-icon svg {
  width: 32px;
  height: 32px;
  color: var(--cash-gold);
}

.cashback-item h4 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ums-iron);
  margin-bottom: var(--spacing-xs);
}

.cashback-item p {
  color: var(--text-muted);
}

.cashback-item .big-number {
  font-size: 2.5rem;
  font-weight: 700;
  font-family: var(--font-en);
  color: var(--cash-gold);
  line-height: 1;
}

/* 返现说明框 */
.cashback-info-box {
  background: rgba(245, 158, 11, 0.08);
  border: 2px dashed var(--cash-gold);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
}

.cashback-info-box h4 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ums-iron);
  margin-bottom: var(--spacing-lg);
}

.cashback-rules {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.cashback-rule {
  text-align: center;
}

.cashback-rule .number {
  font-size: 2rem;
  font-weight: 700;
  font-family: var(--font-en);
  color: var(--cash-gold);
}

.cashback-rule .label {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ========================================
   对比表格
   ======================================== */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.compare-table th,
.compare-table td {
  padding: var(--spacing-lg);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.compare-table th {
  background: var(--ums-iron);
  color: var(--bg-white);
  font-weight: 600;
  font-size: 1rem;
}

.compare-table th:first-child {
  width: 25%;
}

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

.compare-table tbody tr:hover {
  background: rgba(16, 185, 129, 0.03);
}

.compare-table .check {
  color: var(--safe-green);
  font-weight: 700;
}

.compare-table .cross {
  color: var(--text-muted);
}

.compare-table .highlight-brand {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(245, 158, 11, 0.1));
  font-weight: 600;
}

/* 精简对比表 */
.compare-table-simple {
  font-size: 0.9375rem;
}

.compare-table-simple th,
.compare-table-simple td {
  padding: var(--spacing-md);
}

.compare-table-simple .brand-name {
  font-weight: 700;
  color: var(--ums-iron);
}

/* 四品牌对比 */
.brand-compare-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.brand-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

.brand-card.highlight {
  background: linear-gradient(135deg, var(--ums-iron) 0%, var(--ums-iron-light) 100%);
  color: var(--bg-white);
}

.brand-card.highlight .brand-name {
  color: var(--bg-white);
}

.brand-card.highlight .feature-text {
  color: rgba(255, 255, 255, 0.8);
}

.brand-logo {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--bg-page), var(--border-color));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--spacing-lg);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.brand-card.highlight .brand-logo {
  background: rgba(255, 255, 255, 0.15);
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--ums-iron);
  margin-bottom: var(--spacing-md);
}

.brand-features {
  text-align: left;
}

.feature-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: 0.875rem;
}

.feature-item .icon {
  min-width: 20px;
}

.feature-item .check {
  color: var(--safe-green);
}

.feature-item .cross {
  color: var(--text-muted);
}

.feature-item .gold {
  color: var(--cash-gold);
}

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

.faq-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: var(--spacing-lg);
  background: none;
  border: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ums-iron);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--bg-page);
}

.faq-question .icon {
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question .icon {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
  max-height: 300px;
}

.faq-answer-content {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--text-body);
  line-height: 1.7;
}

/* ========================================
   底部申请区
   ======================================== */
.cta-section {
  background: linear-gradient(135deg, var(--ums-iron) 0%, var(--ums-iron-light) 100%);
  padding: var(--spacing-3xl) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 50% 100%, rgba(16, 185, 129, 0.2) 0%, transparent 60%);
}

.cta-container {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.cta-section h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--bg-white);
  margin-bottom: var(--spacing-md);
}

.cta-section h3 .highlight {
  color: var(--safe-green);
}

.cta-section p {
  font-size: 1.125rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
}

.cta-section .btn-primary {
  font-size: 1.125rem;
  padding: var(--spacing-lg) var(--spacing-2xl);
}

/* ========================================
   页脚
   ======================================== */
.footer {
  background: linear-gradient(180deg, var(--ums-iron) 0%, var(--ums-iron-dark) 100%);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-brand {
  color: var(--bg-white);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
}

.footer-logo svg {
  width: 32px;
  height: 32px;
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.footer-column h4 {
  color: var(--bg-white);
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--safe-green);
}

.footer-bottom {
  padding-top: var(--spacing-xl);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-bottom p {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

/* ========================================
   响应式设计
   ======================================== */
@media (max-width: 1024px) {
  .anxian-block {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .anxian-image {
    height: 300px;
  }

  .safety-cards {
    flex-direction: column;
  }

  .safety-card:nth-child(1),
  .safety-card:nth-child(2) {
    width: 100%;
  }

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

  .safety-cards-staggered {
    flex-direction: column;
  }

  .safety-card-staggered:nth-child(1),
  .safety-card-staggered:nth-child(2),
  .safety-card-staggered:nth-child(3) {
    width: 100%;
    margin-top: 0;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

  .cashback-rules {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

@media (max-width: 768px) {
  .navbar-nav {
    display: none;
  }

  .navbar-toggle {
    display: flex;
  }

  .hero {
    padding: 120px 0 60px;
  }

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

  .hero-subtitle {
    font-size: 1rem;
  }

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

  .btn-primary,
  .btn-secondary {
    width: 100%;
    max-width: 300px;
    justify-content: center;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .safety-cards-3 {
    grid-template-columns: 1fr;
  }

  .brand-compare-grid {
    grid-template-columns: 1fr;
  }

  .compare-table {
    font-size: 0.875rem;
  }

  .compare-table th,
  .compare-table td {
    padding: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .navbar-container {
    padding: 0 var(--spacing-md);
  }

  .section-container {
    padding: 0 var(--spacing-md);
  }

  .hero-container {
    padding: 0 var(--spacing-md);
  }

  .cta-container {
    padding: 0 var(--spacing-md);
  }

  .footer-container {
    padding: 0 var(--spacing-md);
  }
}