/* ============================================
   云服务器页面 - 极简商务风
   主色：#DC2626 中国红
   ============================================ */
:root {
  --primary: #DC2626;
  --primary-dark: #B91C1C;
  --primary-light: #FEE2E2;
  --primary-bg: #FEF2F2;
  --bg-white: #FFFFFF;
  --bg-gray: #F9FAFB;
  --text-dark: #111827;
  --text-medium: #4B5563;
  --text-light: #9CA3AF;
  --border: #E5E7EB;
  --border-light: #F3F4F6;
  --usdt: #10B981;
  --usdt-light: #D1FAE5;
  --anonymous: #6366F1;
  --anonymous-light: #E0E7FF;
  --telegram: #0088cc;
  --telegram-light: #E0F2FE;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --radius: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-medium);
  background: var(--bg-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  transition: var(--transition);
}
ul, ol {
  list-style: none;
}
input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  outline: none;
}
.bg-gray {
  background: var(--bg-gray);
}
.text-red {
  color: var(--primary);
}
.section {
  padding: 80px 0;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--primary-light);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 16px;
}
.section-badge i {
  font-size: 12px;
}
.section-title {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}
.section-description {
  font-size: 16px;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}
/* ============================================
   按钮样式
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}
.btn-lg {
  padding: 14px 32px;
  font-size: 15px;
}
.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}
.btn-outline {
  background: transparent;
  color: var(--text-medium);
  border-color: var(--border);
}
.btn-outline:hover {
  color: var(--primary);
  border-color: var(--primary);
  background: var(--primary-bg);
}
.btn-ghost {
  background: var(--bg-gray);
  color: var(--text-dark);
  border-color: var(--border);
}
.btn-ghost:hover {
  background: var(--border-light);
  border-color: var(--text-light);
}
.btn-white {
  background: white;
  color: var(--primary);
  border-color: white;
}
.btn-white:hover {
  background: var(--primary-light);
  transform: translateY(-1px);
}
.btn-outline-white {
  background: transparent;
  color: white;
  border-color: rgba(255, 255, 255, 0.5);
}
.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
}
/* ============================================
   1. 顶部公告栏
   ============================================ */
.top-bar {
  background: var(--primary);
  color: white;
  font-size: 13px;
  padding: 8px 0;
  position: relative;
  z-index: 1002;
}
.top-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.top-bar-left {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 500;
}
.top-bar-left i {
  font-size: 12px;
}
.top-bar-right {
  display: flex;
  align-items: center;
  gap: 12px;
}
.top-bar-right a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}
.top-bar-right a:hover {
  color: white;
}
.top-bar-right .divider {
  color: rgba(255, 255, 255, 0.4);
}
/* ============================================
   2. 导航栏
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: white;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.navbar.scrolled {
  box-shadow: var(--shadow-md);
  border-bottom-color: transparent;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 72px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 6px;
}
.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  letter-spacing: 0.5px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-medium);
  border-radius: var(--radius);
  transition: var(--transition);
}
.nav-link:hover {
  color: var(--primary);
  background: var(--primary-bg);
}
.nav-link.active {
  color: var(--primary);
  background: var(--primary-bg);
  font-weight: 600;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.mobile-menu-btn span {
  width: 22px;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: var(--transition);
}
/* 移动端菜单 */
.mobile-nav {
  display: none;
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  max-width: 85vw;
  height: 100vh;
  background: white;
  z-index: 2000;
  transform: translateX(100%);
  transition: transform 0.3s ease;
  box-shadow: -4px 0 20px rgba(0, 0, 0, 0.08);
  overflow-y: auto;
}
.mobile-nav.open {
  transform: translateX(0);
}
.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  color: var(--text-dark);
}
.mobile-nav-close {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: var(--text-medium);
  font-size: 16px;
}
.mobile-nav-close:hover {
  background: var(--bg-gray);
  color: var(--text-dark);
}
.mobile-nav-links {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.mobile-nav-link {
  padding: 12px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-medium);
  border-radius: var(--radius);
}
.mobile-nav-link:hover,
.mobile-nav-link.active {
  color: var(--primary);
  background: var(--primary-bg);
}
.mobile-nav-contacts {
  padding: 16px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.mobile-contact-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
}
.mobile-contact-btn:hover {
  background: var(--primary-dark);
}
/* ============================================
   3. Hero 区域
   ============================================ */
.hero {
  padding: 80px 0 100px;
  background: white;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 60%);
  opacity: 0.5;
  pointer-events: none;
}
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: var(--primary-bg);
  border: 1px solid var(--primary-light);
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-dark);
  margin-bottom: 28px;
}
.hero-eyebrow i {
  font-size: 12px;
}
.hero-title {
  font-size: 52px;
  font-weight: 900;
  color: var(--text-dark);
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}
.hero-subtitle {
  font-size: 18px;
  color: var(--text-medium);
  line-height: 1.8;
  margin-bottom: 48px;
}
.hero-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 60px;
}
.hero-card {
  position: relative;
  padding: 0 28px 28px 28px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: left;
  transition: var(--transition);
  overflow: hidden;
}
.hero-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.hero-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-top: 24px;
}
.hero-card-num {
  font-size: 42px;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
  transition: var(--transition);
}
.hero-card:hover .hero-card-num {
  color: var(--primary);
}
.hero-card-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  font-size: 24px;
  flex-shrink: 0;
  transition: var(--transition);
}
.hero-card:hover .hero-card-icon {
  transform: scale(1.05);
}
.hero-card-icon.anonymous {
  background: var(--anonymous-light);
  color: var(--anonymous);
}
.hero-card-icon.usdt {
  background: var(--usdt-light);
  color: var(--usdt);
}
.hero-card-icon.service {
  background: var(--telegram-light);
  color: var(--telegram);
}
.hero-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.hero-card > p {
  font-size: 14px;
  color: var(--text-medium);
  line-height: 1.7;
  margin-bottom: 16px;
}
.hero-card-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.hero-card-list li {
  font-size: 13px;
  color: var(--text-medium);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hero-card-list li i {
  color: var(--primary);
  font-size: 12px;
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}
/* ============================================
   4. 信任背书区
   ============================================ */
.trust-section {
  padding: 70px 0;
}
.trust-comparison {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
}
.comparison-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  padding: 16px 24px;
  border-bottom: 1px solid var(--border);
  align-items: center;
}
.comparison-row:last-child {
  border-bottom: none;
}
.comparison-row.comparison-header {
  background: var(--bg-gray);
  font-weight: 700;
  padding: 20px 24px;
}
.comparison-item {
  font-size: 14px;
  color: var(--text-dark);
}
.comparison-item.comparison-bad {
  color: var(--text-medium);
  text-align: center;
}
.comparison-item.comparison-good {
  color: var(--text-medium);
  text-align: center;
}
.comparison-header .comparison-bad {
  color: var(--text-medium);
}
.comparison-header .comparison-good {
  color: var(--primary);
}
.text-red {
  color: var(--primary);
}
.text-green {
  color: #10b981;
}
.comparison-row .comparison-bad i,
.comparison-row .comparison-good i {
  margin-right: 8px;
}
/* ============================================
   5. 关于我们
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-content .section-badge {
  margin-bottom: 20px;
}
.about-content .section-title {
  text-align: left;
  margin-bottom: 20px;
}
.about-text {
  font-size: 15px;
  color: var(--text-medium);
  line-height: 1.8;
  margin-bottom: 16px;
}
.about-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
}
.about-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
}
.about-feature-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-bg);
  border-radius: var(--radius);
  color: var(--primary);
  font-size: 16px;
  flex-shrink: 0;
}
.about-feature-item span {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
}
.about-stats-wrapper {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.about-stat-card {
  padding: 28px 24px;
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
}
.about-stat-card:hover {
  background: white;
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.about-stat-number {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}
.about-stat-label {
  font-size: 13px;
  color: var(--text-medium);
  font-weight: 500;
}
/* ============================================
   6. 产品优势
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  position: relative;
  padding: 0 28px 28px 28px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}
.feature-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-top: 24px;
}
.feature-num {
  font-size: 42px;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
  transition: var(--transition);
}
.feature-card:hover .feature-num {
  color: var(--primary);
}
.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-bg);
  border-radius: var(--radius-md);
  color: var(--primary);
  font-size: 22px;
  transition: var(--transition);
  flex-shrink: 0;
}
.feature-card:hover .feature-icon {
  transform: scale(1.05);
}
.feature-icon.anonymous {
  background: var(--anonymous-light);
  color: var(--anonymous);
}
.feature-icon.usdt {
  background: var(--usdt-light);
  color: var(--usdt);
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 10px;
}
.feature-card > p {
  font-size: 14px;
  color: var(--text-medium);
  line-height: 1.7;
  margin-bottom: 16px;
}
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.feature-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-medium);
}
.feature-list li i {
  color: var(--usdt);
  font-size: 11px;
  width: 16px;
  text-align: center;
}
/* ============================================
   7. 秀米云推荐专区
   ============================================ */
.xiumi-section {
  padding: 60px 0;
}
.xiumi-banner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 56px;
  background: var(--primary-bg);
  border: 1px solid var(--primary-light);
  border-radius: var(--radius-lg);
  position: relative;
  overflow: hidden;
}
.xiumi-banner::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--primary-light) 0%, transparent 60%);
  opacity: 0.6;
  pointer-events: none;
}
.xiumi-content {
  position: relative;
  z-index: 1;
}
.xiumi-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--primary);
  color: white;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.xiumi-badge i {
  font-size: 12px;
}
.xiumi-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-dark);
  line-height: 1.3;
  margin-bottom: 12px;
}
.xiumi-desc {
  font-size: 15px;
  color: var(--text-medium);
  line-height: 1.7;
  margin-bottom: 24px;
}
.xiumi-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 32px;
}
.xiumi-feature {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
}
.xiumi-feature i {
  color: var(--primary);
  font-size: 16px;
}
.xiumi-visual {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}
.xiumi-visual-icon {
  width: 180px;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: 50%;
  box-shadow: 0 20px 40px rgba(220, 38, 38, 0.15);
  font-size: 72px;
  color: var(--primary);
}
/* ============================================
   8. 合作伙伴
   ============================================ */
.partners-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.partner-card {
  padding: 28px 20px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
}
.partner-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.partner-card img {
  height: 28px;
  width: auto;
  object-fit: contain;
}
.partner-card span {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-light);
}
/* ============================================
   9. 配置选择 + 价格计算器
   ============================================ */
.config-wrapper {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 32px;
  align-items: start;
}
.config-form {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
}
.config-form-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}
.config-form-title i {
  color: var(--primary);
  font-size: 18px;
}
.config-group {
  margin-bottom: 24px;
}
.config-group:last-child {
  margin-bottom: 0;
}
.config-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.config-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 12px;
}
.config-label i {
  color: var(--primary);
  font-size: 13px;
}
.config-label-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}
.config-label-row .config-label {
  margin-bottom: 0;
}
.config-value {
  padding: 4px 12px;
  background: var(--primary-bg);
  color: var(--primary-dark);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
}
.config-select {
  width: 100%;
  padding: 12px 16px;
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-dark);
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239CA3AF' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}
.config-select:hover {
  border-color: var(--text-light);
}
.config-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}
.config-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--border);
  border-radius: 100px;
  outline: none;
  cursor: pointer;
}
.config-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}
.config-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.4);
}
.config-slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--primary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}
.os-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.os-tag {
  padding: 8px 16px;
  background: var(--bg-gray);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-medium);
  cursor: pointer;
  transition: var(--transition);
}
.os-tag:hover {
  border-color: var(--text-light);
}
.os-tag.active {
  background: var(--primary-bg);
  border-color: var(--primary);
  color: var(--primary-dark);
  font-weight: 600;
}
/* 价格卡片 */
.pricing-card {
  position: sticky;
  top: 100px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
}
.pricing-header {
  text-align: center;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.pricing-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--primary-bg);
  color: var(--primary-dark);
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}
.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
  margin-bottom: 8px;
}
.price-currency {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-medium);
}
.price-amount {
  font-size: 48px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}
.price-period {
  font-size: 14px;
  color: var(--text-light);
  margin-left: 4px;
}
.pricing-original {
  font-size: 13px;
  color: var(--text-light);
  text-decoration: line-through;
}
.pricing-period-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 4px;
  background: var(--bg-gray);
  border-radius: var(--radius);
  margin-bottom: 24px;
}
.period-btn {
  padding: 10px 8px;
  text-align: center;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-medium);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.period-btn:hover {
  color: var(--text-dark);
}
.period-btn.active {
  background: white;
  color: var(--primary);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.discount-badge {
  font-size: 10px;
  font-weight: 600;
  color: var(--usdt);
  background: var(--usdt-light);
  padding: 2px 6px;
  border-radius: 4px;
}
.period-btn.active .discount-badge {
  background: var(--primary-bg);
  color: var(--primary-dark);
}
.pricing-details {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.pricing-detail-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 0;
  font-size: 13px;
}
.detail-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-light);
}
.detail-label i {
  font-size: 12px;
  width: 16px;
  text-align: center;
}
.detail-value {
  font-weight: 500;
  color: var(--text-dark);
}
.pricing-total {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.total-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-medium);
}
.total-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.total-value em {
  font-style: normal;
  font-size: 14px;
  font-weight: 600;
}
.total-value i {
  font-style: normal;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-light);
  margin-left: 2px;
}
.pricing-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  padding: 14px 24px;
  background: var(--primary);
  color: white;
  border-radius: var(--radius);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: var(--transition);
  margin-bottom: 12px;
}
.pricing-btn:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}
.pricing-note {
  text-align: center;
  font-size: 12px;
  color: var(--text-light);
}
.pricing-note i {
  margin-right: 4px;
}
/* ============================================
   10. 购买流程
   ============================================ */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
}
.process-step {
  position: relative;
  padding: 32px 24px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
}
.process-step:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}
.step-number {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 36px;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
}
.step-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-bg);
  border-radius: var(--radius-md);
  color: var(--primary);
  font-size: 24px;
  transition: var(--transition);
}
.process-step:hover .step-icon {
  transform: scale(1.05);
}
.process-step h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.process-step p {
  font-size: 13px;
  color: var(--text-medium);
  line-height: 1.6;
}
/* ============================================
   11. 使用文档 + FAQ
   ============================================ */
.docs-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.docs-subtitle {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
}
.docs-subtitle i {
  color: var(--primary);
  font-size: 16px;
}
.docs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.doc-card {
  padding: 24px 20px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  cursor: pointer;
}
.doc-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}
.doc-icon {
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-bg);
  border-radius: var(--radius);
  color: var(--primary);
  font-size: 18px;
}
.doc-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 6px;
}
.doc-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}
/* FAQ */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--text-light);
}
.faq-item.open {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dark);
  text-align: left;
  background: none;
  border: none;
  cursor: pointer;
  transition: var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question i {
  font-size: 12px;
  color: var(--text-light);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}
.faq-item.open .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 20px;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 20px 20px;
}
.faq-answer p {
  font-size: 14px;
  color: var(--text-medium);
  line-height: 1.8;
}
/* ============================================
   12. CTA 横幅
   ============================================ */
.cta-banner {
  padding: 70px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
  pointer-events: none;
}
.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -100px;
  right: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 60%);
  pointer-events: none;
}
.cta-banner-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-content {
  flex: 1;
  min-width: 300px;
}
.cta-content h2 {
  font-size: 32px;
  font-weight: 800;
  color: white;
  margin-bottom: 8px;
}
.cta-content p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
}
.cta-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
/* ============================================
   13. 客户评价
   ============================================ */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.testimonial-card {
  padding: 32px 28px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}
.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.testimonial-rating {
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  color: #FBBF24;
  font-size: 14px;
}
.testimonial-text {
  font-size: 14px;
  color: var(--text-medium);
  line-height: 1.8;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}
.author-avatar {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-bg);
  border-radius: 50%;
  color: var(--primary);
  font-size: 20px;
  flex-shrink: 0;
}
.author-info h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 2px;
}
.author-info span {
  font-size: 13px;
  color: var(--text-light);
}
/* ============================================
   14. 联系我们
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.contact-card {
  padding: 36px 28px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.contact-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  font-size: 26px;
}
.contact-icon.telegram {
  background: var(--telegram-light);
  color: var(--telegram);
}
.contact-icon.telegram-alt {
  background: var(--primary-bg);
  color: var(--primary);
}
.contact-icon.xiumi {
  background: var(--usdt-light);
  color: var(--usdt);
}
.contact-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 8px;
}
.contact-card p {
  font-size: 14px;
  color: var(--text-medium);
  margin-bottom: 16px;
}
.contact-username {
  display: inline-block;
  padding: 8px 16px;
  background: var(--bg-gray);
  border-radius: var(--radius);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dark);
  font-family: monospace;
}
.contact-card:hover .contact-username {
  background: var(--primary-bg);
  color: var(--primary-dark);
}
.contact-info-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding: 28px;
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}
.info-item {
  display: flex;
  align-items: center;
  gap: 16px;
}
.info-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-bg);
  border-radius: var(--radius-md);
  color: var(--primary);
  font-size: 20px;
  flex-shrink: 0;
}
.info-item h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 2px;
}
.info-item p {
  font-size: 13px;
  color: var(--text-medium);
}
/* ============================================
   15. 页脚
   ============================================ */
.footer {
  background: #111827;
  color: var(--text-light);
  padding-top: 60px;
}
.footer-main {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand {
  max-width: 360px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo img {
  width: 36px;
  height: 36px;
  border-radius: 6px;
}
.footer-logo span {
  font-size: 18px;
  font-weight: 700;
  color: white;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #9CA3AF;
  margin-bottom: 20px;
}
.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius);
  color: #9CA3AF;
  font-size: 18px;
  transition: var(--transition);
}
.footer-social a:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
}
.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: white;
  margin-bottom: 18px;
}
.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-col li a {
  font-size: 14px;
  color: #9CA3AF;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col li a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-col li a i {
  font-size: 13px;
}
.footer-bottom {
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 13px;
  color: #6B7280;
}
.footer-bottom-links {
  display: flex;
  gap: 20px;
}
.footer-bottom-links a {
  font-size: 13px;
  color: #6B7280;
  transition: var(--transition);
}
.footer-bottom-links a:hover {
  color: var(--primary);
}
/* ============================================
   悬浮客服按钮
   ============================================ */
.float-contact {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
}
.float-btn {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border: 2px solid var(--border);
  border-radius: 50%;
  font-size: 24px;
  box-shadow: var(--shadow-lg);
  transition: var(--transition);
}
.float-logo {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  object-fit: contain;
}
.float-btn:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: var(--shadow-xl);
  color: white;
}
/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .section {
    padding: 60px 0;
  }
  .section-title {
    font-size: 30px;
  }
  .nav-links {
    display: none;
  }
  .mobile-menu-btn {
    display: flex;
  }
  .mobile-nav {
    display: block;
  }
  .hero-title {
    font-size: 42px;
  }
  .hero-cards {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .trust-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .xiumi-banner {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px;
  }
  .xiumi-visual-icon {
    width: 140px;
    height: 140px;
    font-size: 56px;
  }
  .partners-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .config-wrapper {
    grid-template-columns: 1fr;
  }
  .pricing-card {
    position: static;
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .docs-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .contact-info-bar {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .footer-main {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}
@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  .section {
    padding: 48px 0;
  }
  .section-header {
    margin-bottom: 40px;
  }
  .section-title {
    font-size: 26px;
  }
  .top-bar {
    display: none;
  }
  .navbar-inner {
    height: 64px;
  }
  .nav-actions .btn-outline {
    display: none;
  }
  .hero {
    padding: 48px 0 64px;
  }
  .hero-title {
    font-size: 32px;
  }
  .hero-subtitle {
    font-size: 15px;
    margin-bottom: 32px;
  }
  .hero-cards {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .about-features {
    grid-template-columns: 1fr;
  }
  .about-stats-wrapper {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-stat-number {
    font-size: 28px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .xiumi-banner {
    padding: 32px 24px;
  }
  .xiumi-title {
    font-size: 24px;
  }
  .xiumi-features {
    grid-template-columns: 1fr;
  }
  .xiumi-visual-icon {
    width: 120px;
    height: 120px;
    font-size: 48px;
  }
  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .config-form {
    padding: 24px 20px;
  }
  .config-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .os-tags {
    gap: 6px;
  }
  .os-tag {
    padding: 6px 12px;
    font-size: 12px;
  }
  .pricing-card {
    padding: 24px 20px;
  }
  .price-amount {
    font-size: 40px;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .docs-grid {
    grid-template-columns: 1fr;
  }
  .cta-banner {
    padding: 48px 0;
  }
  .cta-content h2 {
    font-size: 24px;
  }
  .cta-banner-inner {
    flex-direction: column;
    text-align: center;
  }
  .cta-actions {
    width: 100%;
  }
  .cta-actions .btn {
    flex: 1;
  }
  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .float-contact {
    right: 16px;
    bottom: 16px;
  }
  .float-btn {
    width: 50px;
    height: 50px;
    font-size: 20px;
  }
}
@media (max-width: 480px) {
  .section-title {
    font-size: 22px;
  }
  .hero-title {
    font-size: 28px;
  }
  .about-stat-card {
    padding: 20px 16px;
  }
  .about-stat-number {
    font-size: 24px;
  }
  .partners-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-links {
    grid-template-columns: 1fr;
  }
  .pricing-period-tabs {
    grid-template-columns: repeat(3, 1fr);
  }
  .period-btn {
    font-size: 12px;
    padding: 8px 4px;
  }
}