/* tokenim 官网 - 设计变量与基础样式 */
:root {
  /* 颜色 */
  --color-primary: #0d47a1;
  --color-primary-dark: #0a3d8f;
  --color-primary-light: #1565c0;
  --color-accent: #00bcd4;
  --color-accent-hover: #00acc1;
  --color-text: #1a1a2e;
  --color-text-light: #4a4a6a;
  --color-text-muted: #6b6b8a;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-bg-dark: #0a1628;
  --color-border: #e2e8f0;
  --color-shadow: rgba(13, 71, 161, 0.08);
  --color-shadow-strong: rgba(13, 71, 161, 0.15);

  /* 间距 - 紧凑布局 */
  --space-xs: 0.35rem;
  --space-sm: 0.7rem;
  --space-md: 1rem;
  --space-lg: 1.25rem;
  --space-xl: 1.75rem;
  --space-2xl: 2.5rem;
  --space-3xl: 3.5rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px var(--color-shadow);
  --shadow-md: 0 4px 20px var(--color-shadow);
  --shadow-lg: 0 8px 40px var(--color-shadow-strong);

  /* 过渡 */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.4s ease;

  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Consolas", "Monaco", monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ===== 顶部导航 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-sm) 0;
  transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.header:not(.scrolled) {
  background: linear-gradient(180deg, rgba(10, 22, 40, 0.7) 0%, transparent 100%);
  backdrop-filter: blur(4px);
}

.header:not(.scrolled) .nav-list a,
.header:not(.scrolled) .logo {
  color: rgba(255, 255, 255, 0.95);
}

.header:not(.scrolled) .nav-list a::after {
  background: linear-gradient(90deg, #00bcd4, rgba(255,255,255,0.8));
}

.header:not(.scrolled) .logo:hover {
  color: rgba(255, 255, 255, 0.95);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(10px);
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-primary);
}

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

.logo-img {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

.logo-text {
  letter-spacing: -0.02em;
}

.nav-list {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.nav-list a {
  color: var(--color-text);
  font-size: 0.85rem;
  font-weight: 500;
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-list a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  transition: width var(--transition-normal);
}

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

.nav-list a:hover::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition-fast);
}

.header:not(.scrolled) .nav-toggle span {
  background: rgba(255, 255, 255, 0.9);
}

/* ===== Hero 首屏 ===== */
.hero {
  padding: calc(64px + var(--space-2xl)) 0 var(--space-2xl);
  background: linear-gradient(135deg, #0a1628 0%, #0d47a1 50%, #0a3d8f 100%);
  background-attachment: fixed;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 30% 20%, rgba(0, 188, 212, 0.15) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 80%, rgba(21, 101, 192, 0.2) 0%, transparent 50%);
  pointer-events: none;
}

.hero-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content h1 {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.25;
  margin-bottom: var(--space-sm);
  letter-spacing: -0.03em;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-sm);
}

.hero-desc {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: var(--space-md);
  max-width: 480px;
  font-size: 0.95rem;
  line-height: 1.55;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, #00bcd4, #00acc1);
  color: #fff;
  border: none;
  box-shadow: 0 4px 20px rgba(0, 188, 212, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 28px rgba(0, 188, 212, 0.5);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.8);
}

.hero-visual {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.1);
  background: var(--color-bg-alt);
  transition: transform var(--transition-normal);
}

.hero-visual:hover {
  transform: scale(1.02);
}

.hero-visual img {
  width: 100%;
  max-width: 520px;
  margin-left: auto;
  aspect-ratio: 2/1;
  object-fit: cover;
  background: var(--color-bg-alt);
}

.hero-tagline {
  max-width: 1200px;
  margin: var(--space-md) auto 0;
  padding: 0 var(--space-md);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
}

/* ===== 全球用户 - 深色背景确保白字可读 ===== */
section.global-users {
  background: #0d47a1 !important;
  background: linear-gradient(135deg, #1565c0 0%, #0a3d8f 100%) !important;
  padding: var(--space-xl) 0;
}

.global-users h2 {
  color: #fff !important;
}

.global-users .section-lead {
  color: rgba(255, 255, 255, 0.95) !important;
}

.global-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  margin-top: var(--space-md);
}

.global-stat-card {
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-md);
  padding: var(--space-lg) var(--space-xl);
  min-width: 140px;
  text-align: center;
  transition: all var(--transition-normal);
}

.global-stat-card:hover {
  background: rgba(255, 255, 255, 0.22);
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.global-stat-num {
  display: block;
  font-size: 1.75rem;
  font-weight: 700;
  color: #fff !important;
}

.global-stat-label {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.95) !important;
  margin-top: var(--space-xs);
}

/* ===== 支持的货币 - 左右布局扁平化 ===== */
.currencies-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.currencies-content {
  order: 1;
}

.currencies-visual {
  order: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.currencies-visual img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.currencies-stats {
  margin-bottom: var(--space-md);
  font-size: 1rem;
  color: var(--color-text-light);
}

.currencies-stat-divider {
  margin: 0 var(--space-md);
  color: var(--color-border);
}

.currencies-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.currency-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  min-width: 80px;
  transition: all var(--transition-normal);
  cursor: default;
}

.currency-item:hover {
  transform: translateY(-6px) scale(1.05);
  box-shadow: 0 8px 24px rgba(13, 71, 161, 0.15);
  border-color: var(--color-accent);
}

.currency-item img {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-xs);
  object-fit: contain;
}

.currency-item span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

/* ===== 安全优势对比 ===== */
.compare-table-wrap {
  overflow-x: auto;
  margin-top: var(--space-md);
}

.compare-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

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

.compare-table th {
  background: var(--color-primary);
  color: #fff;
  font-weight: 600;
}

.compare-table th:first-child {
  border-radius: var(--radius-sm) 0 0 0;
}

.compare-table th:last-child {
  border-radius: 0 var(--radius-sm) 0 0;
}

.compare-table tbody tr:hover {
  background: var(--color-bg-alt);
}

.compare-table td:first-child {
  font-weight: 500;
  color: var(--color-primary-dark);
}

/* ===== 使用教程 ===== */
.guide-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.guide-step {
  background: var(--color-bg);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.guide-step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.guide-num {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 50%;
  margin-bottom: var(--space-sm);
}

.guide-step h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-xs);
  color: var(--color-primary);
}

.guide-step p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.5;
}

.guide-tips {
  background: var(--color-bg-alt);
  padding: var(--space-md);
  border-radius: var(--radius-md);
}

.guide-tips h3 {
  font-size: 1rem;
  margin-bottom: var(--space-sm);
  color: var(--color-primary);
}

.guide-tips ul {
  margin: 0;
  padding-left: 1.25rem;
}

.guide-tips li {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-xs);
}

/* ===== 通用 section 样式 ===== */
section {
  padding: var(--space-2xl) 0;
}

section:nth-child(even):not(.global-users) {
  background: var(--color-bg-alt);
}

section h2 {
  font-size: clamp(1.5rem, 2.5vw, 1.95rem);
  font-weight: 700;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--space-sm);
}

.section-lead {
  max-width: 800px;
  margin: 0 auto var(--space-lg);
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== 品牌与产品定位 ===== */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.brand-card {
  background: var(--color-bg);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.brand-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(13, 71, 161, 0.12);
  border-color: var(--color-accent);
}

.brand-icon {
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-sm);
  stroke: var(--color-primary);
  transition: transform var(--transition-normal);
}

.brand-card:hover .brand-icon {
  transform: scale(1.1);
}

.brand-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.brand-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ===== 产品功能 ===== */
.product-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.product-card {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-lg);
  align-items: center;
}

.product-card.reverse {
  direction: rtl;
}

.product-card.reverse > * {
  direction: ltr;
}

.product-card-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  max-width: 320px;
  transition: transform var(--transition-normal);
}

.product-card-img:hover {
  transform: scale(1.03);
}

.product-card-img img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  background: var(--color-bg-alt);
}

.product-card-body h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.product-card-body p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ===== 核心优势 ===== */
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.advantage-card {
  background: var(--color-bg);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border-left: 3px solid var(--color-accent);
  transition: all var(--transition-normal);
}

.advantage-card:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 20px rgba(0, 188, 212, 0.15);
}

.advantage-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-accent);
  opacity: 0.7;
  margin-bottom: var(--space-xs);
}

.advantage-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.advantage-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

/* ===== 安全机制 ===== */
.security-content {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: var(--space-lg);
  align-items: start;
}

.security-image {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  position: sticky;
  top: 90px;
  max-width: 380px;
  transition: transform var(--transition-normal);
}

.security-image img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.security-image:hover img {
  transform: scale(1.03);
}

.security-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.security-item {
  background: var(--color-bg);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

.security-item:hover {
  border-color: var(--color-primary);
  box-shadow: 0 2px 12px rgba(13, 71, 161, 0.08);
}

.security-item h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
}

.security-item p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ===== 应用场景 ===== */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.scene-card {
  background: var(--color-bg);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.scene-card:hover {
  box-shadow: 0 6px 24px rgba(13, 71, 161, 0.1);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.scene-icon {
  width: 36px;
  height: 36px;
  margin-bottom: var(--space-sm);
  stroke: var(--color-primary);
  transition: transform var(--transition-normal);
}

.scene-card:hover .scene-icon {
  transform: scale(1.08);
}

.scene-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.scene-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.scene-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.scene-images img {
  width: 100%;
  border-radius: var(--radius-md);
  aspect-ratio: 16/9;
  object-fit: cover;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.scene-images img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

/* ===== 产品界面展示 ===== */
.showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.showcase-item {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  border: 1px solid var(--color-border);
}

.showcase-item:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: 0 12px 32px rgba(13, 71, 161, 0.15);
  border-color: var(--color-accent);
}

.showcase-item img {
  width: 100%;
  aspect-ratio: 9/16;
  object-fit: cover;
}

.showcase-appzh .showcase-item {
  max-width: 220px;
  margin: 0 auto;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 100%;
  margin: 0;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

.faq-item.active {
  background: rgba(13, 71, 161, 0.04);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.faq-question:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.faq-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-left: var(--space-sm);
  position: relative;
}

.faq-icon::before,
.faq-icon::after {
  content: "";
  position: absolute;
  background: var(--color-primary);
  transition: transform var(--transition-normal);
}

.faq-icon::before {
  width: 12px;
  height: 2px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-icon::after {
  width: 2px;
  height: 12px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.faq-item.active .faq-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

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

.faq-answer p {
  padding: 0 var(--space-md) var(--space-md);
  color: var(--color-text-light);
  font-size: 0.95rem;
}

/* ===== 页脚 ===== */
.footer {
  background: linear-gradient(180deg, #0a1628 0%, #061018 100%);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.1fr 1.8fr;
  gap: var(--space-3xl);
  align-items: start;
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.footer-logo:hover {
  color: #fff;
  opacity: 0.9;
}

.footer-logo-img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}

.footer-tagline {
  margin-top: var(--space-md);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.15em;
}

.footer-desc {
  margin-top: var(--space-sm);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.7;
  max-width: 320px;
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.footer-nav-col h4 {
  font-size: 0.8rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

.footer-nav-col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav a {
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-lg);
}

.footer-copy {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-legal {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
}

.footer-legal a {
  color: rgba(255, 255, 255, 0.5);
  transition: color var(--transition-fast);
}

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

.footer-sep {
  color: rgba(255, 255, 255, 0.2);
  font-size: 0.7rem;
}

/* ===== 滚动动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .showcase-appzh .showcase-item {
    max-width: 200px;
  }

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

  .product-card {
    grid-template-columns: 1fr;
  }

  .product-card.reverse {
    direction: ltr;
  }

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

  .security-content {
    grid-template-columns: 1fr;
  }

  .security-image {
    position: static;
  }

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

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

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

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

  .footer-nav {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .logo-img {
    width: 28px;
    height: 28px;
  }

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

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.1);
    padding: 80px var(--space-lg) var(--space-lg);
    transition: right var(--transition-normal);
  }

  .nav.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    gap: var(--space-md);
  }

  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }

  .nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    order: 1;
  }

  .hero-visual {
    order: 0;
    max-width: 400px;
    margin: 0 auto;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

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

  .advantage-grid {
    grid-template-columns: 1fr;
  }

  .scene-grid {
    grid-template-columns: 1fr;
  }

  .scene-images {
    grid-template-columns: 1fr;
  }

  .showcase-grid {
    grid-template-columns: 1fr;
  }

  .guide-steps {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    grid-template-columns: 1fr;
  }

  .currencies-grid {
    gap: var(--space-sm);
  }

  .currency-item {
    min-width: 70px;
    padding: var(--space-xs) var(--space-sm);
  }

  .currency-item img {
    width: 32px;
    height: 32px;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: left;
    padding-bottom: var(--space-xl);
  }

  .footer-brand {
    text-align: center;
  }

  .footer-desc {
    max-width: none;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  .footer-nav {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-lg);
  }

  .footer-nav-col h4 {
    margin-bottom: var(--space-sm);
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .currencies-inner {
    grid-template-columns: 1fr;
  }

  .currencies-content {
    order: 0;
  }

  .currencies-visual {
    order: 1;
  }
}

@media (max-width: 480px) {
  .container,
  .header-inner {
    padding-left: var(--space-md);
    padding-right: var(--space-md);
  }

  .hero {
    padding-top: calc(60px + var(--space-xl));
  }

  .hero-stats {
    gap: var(--space-sm);
  }

  .hero-stat {
    min-width: 80px;
    padding: var(--space-xs) var(--space-sm);
  }

  .showcase-appzh .showcase-item {
    max-width: 180px;
  }

  section {
    padding: var(--space-xl) 0;
  }
}