/* ========================
   上兔进销存官网样式
   版本：2026.08
   说明：响应式静态官网，适配百度/360/搜狗等中文搜索引擎
======================== */

/* CSS 变量 */
:root {
  --primary: #4a90d9;
  --primary-dark: #357abd;
  --primary-light: #e8f4fd;
  --accent: #ff6b35;
  --accent-light: #fff0eb;
  --text: #1f2937;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  --bg: #ffffff;
  --bg-light: #f8fafc;
  --bg-dark: #0f172a;
  --border: #e5e7eb;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --radius: 12px;
  --radius-lg: 20px;
  --max-width: 1200px;
  --header-height: 72px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 14px rgba(74, 144, 217, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(74, 144, 217, 0.45);
  color: #fff;
}

.btn-outline {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline:hover {
  background: var(--primary);
  color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow);
}

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

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

/* 顶部导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.5);
  z-index: 1000;
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow);
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  object-fit: cover;
  display: block;
}

.logo-text {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

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

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

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: var(--transition);
}

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

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

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

/* Hero 区域 */
.hero {
  position: relative;
  padding: 140px 0 100px;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #fff 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(circle, rgba(74, 144, 217, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 8px 16px;
  background: var(--accent-light);
  color: var(--accent);
  border-radius: 50px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  color: var(--text);
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-size: 0.82em;
  display: block;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 560px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 560px;
}

.stat-item {
  text-align: center;
  padding: 16px;
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

.stat-item strong {
  display: block;
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.stat-item span {
  font-size: 13px;
  color: var(--text-muted);
}

.hero-qr {
  display: flex;
  justify-content: center;
}

.qr-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-xl);
  text-align: center;
  max-width: 340px;
  width: 100%;
}

.qr-card img {
  margin: 0 auto 20px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
}

.qr-tip {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 8px;
}

.qr-sub {
  font-size: 14px;
  color: var(--text-muted);
}

.hero-wave {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 80px;
  line-height: 0;
}

.hero-wave svg {
  width: 100%;
  height: 100%;
}

/* 公共区块标题 */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 16px;
}

.section-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--text);
}

.section-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* 亮点 */
.highlights {
  padding: 60px 0 100px;
  background: #fff;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.highlight-card {
  padding: 32px 24px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.highlight-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.highlight-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.highlight-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.highlight-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 功能模块 */
.features {
  padding: 100px 0;
  background: var(--bg-light);
}

.feature-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.feature-tab {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}

.feature-tab:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.feature-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(74, 144, 217, 0.35);
}

.feature-panels {
  position: relative;
}

.feature-panel {
  display: none;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow);
  animation: fadeIn 0.4s ease;
}

.feature-panel.active {
  display: grid;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.panel-content h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 24px;
  color: var(--text);
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-list li {
  position: relative;
  padding-left: 28px;
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.feature-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tool-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

.tool-chip {
  padding: 8px 16px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: 50px;
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.tool-chip:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

/* 手机 mockup */
.phone-mockup {
  position: relative;
  width: 280px;
  margin: 0 auto;
}

.mockup-screen {
  background: #fff;
  border-radius: 32px;
  border: 8px solid #1f2937;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

/* 真实小程序截图（销售开单/库存管理面板） */
.mockup-screen.real-screen {
  border: none;
  border-radius: 24px;
  background: transparent;
}

.mockup-screen.real-screen .mockup-body {
  padding: 0;
  min-height: 0;
  background: transparent;
}

.mockup-screen.real-screen .mockup-header {
  display: none;
}

.phone-screenshot-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 24px;
  box-shadow: var(--shadow-xl);
}

.mockup-header {
  background: var(--primary);
  color: #fff;
  text-align: center;
  padding: 12px;
  font-size: 14px;
  font-weight: 600;
}

.mockup-body {
  padding: 16px;
  min-height: 320px;
  background: #f8fafc;
}

.mock-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.mock-table {
  margin-top: 12px;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.mock-th, .mock-tr {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  padding: 8px 10px;
  font-size: 12px;
}

.mock-th {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
}

.mock-tr {
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
}

.mock-summary {
  margin-top: 12px;
  padding: 10px;
  background: #fff;
  border-radius: 8px;
  font-size: 12px;
  color: var(--text);
  font-weight: 600;
  text-align: center;
  border: 1px solid var(--border);
}

.mock-search {
  background: #fff;
  border-radius: 8px;
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  border: 1px solid var(--border);
}

.mock-cats {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  overflow-x: auto;
}

.mock-cat {
  padding: 4px 10px;
  background: #fff;
  border-radius: 50px;
  font-size: 12px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  white-space: nowrap;
}

.mock-cat.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.mock-inventory-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px;
  background: #fff;
  border-radius: 8px;
  margin-bottom: 8px;
  font-size: 13px;
  border: 1px solid var(--border);
}

.mock-stock {
  padding: 2px 8px;
  background: #dcfce7;
  color: #16a34a;
  border-radius: 50px;
  font-size: 11px;
  font-weight: 600;
}

.mock-stock.warning {
  background: #fef3c7;
  color: #d97706;
}

.mock-stock.zero {
  background: #fee2e2;
  color: #dc2626;
}

.mock-kpi-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

.mock-kpi {
  background: #fff;
  border-radius: 8px;
  padding: 12px;
  text-align: center;
  border: 1px solid var(--border);
}

.mock-kpi span {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.mock-kpi strong {
  font-size: 16px;
  color: var(--primary);
}

.mock-day-card {
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--border);
  overflow: hidden;
}

.mock-day-head {
  display: flex;
  justify-content: space-between;
  padding: 10px 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
}

.mock-day-item {
  display: flex;
  justify-content: space-between;
  padding: 10px 12px;
  font-size: 13px;
  border-top: 1px solid var(--border);
  color: var(--text-secondary);
}

.mock-customer-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  background: #fff;
  border-radius: 8px;
  margin-bottom: 8px;
  border: 1px solid var(--border);
  font-size: 13px;
}

.mock-customer-card strong {
  color: var(--text);
}

.mock-customer-card span {
  color: var(--accent);
  font-weight: 600;
}

.mock-apps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.mock-app {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 12px 4px;
  background: #fff;
  border-radius: 8px;
  border: 1px solid var(--border);
}

.mock-app span {
  font-size: 22px;
}

.mock-app small {
  font-size: 10px;
  color: var(--text-muted);
}

/* 适用场景 */
.scenarios {
  padding: 100px 0;
  background: #fff;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.scenario-card {
  padding: 32px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.scenario-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.scenario-icon {
  font-size: 44px;
  margin-bottom: 16px;
}

.scenario-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.scenario-card p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 优势 */
.advantages {
  padding: 100px 0;
  background: var(--bg-light);
}

.advantage-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.advantage-item {
  display: flex;
  gap: 24px;
  padding: 32px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.advantage-item:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.advantage-num {
  font-size: 40px;
  font-weight: 900;
  color: var(--primary-light);
  line-height: 1;
  flex-shrink: 0;
}

.advantage-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.advantage-body p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 使用指南 */
.guide {
  padding: 100px 0;
  background: #fff;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

.steps::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 16%;
  right: 16%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  z-index: 0;
}

.step {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 16px;
}

.step-num {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  background: #fff;
  border: 4px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  box-shadow: var(--shadow);
}

.step h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.step p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 会员方案 */
.pricing {
  padding: 100px 0;
  background: var(--bg-light);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}

.pricing-card {
  position: relative;
  padding: 40px 32px;
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  text-align: center;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.recommended {
  border: 2px solid var(--primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.03);
}

.pricing-card.recommended:hover {
  transform: scale(1.05) translateY(-6px);
}

.ribbon {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--accent);
  color: #fff;
  padding: 6px 18px;
  border-radius: 50px;
  font-size: 13px;
  font-weight: 700;
}

.pricing-card h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 16px;
}

.pricing-price {
  font-size: 42px;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 24px;
}

.pricing-card ul {
  margin-bottom: 32px;
}

.pricing-card li {
  padding: 10px 0;
  font-size: 15px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
}

.pricing-card li:last-child {
  border-bottom: none;
}

.pricing-card .btn {
  width: 100%;
}

/* FAQ */
.faq {
  padding: 100px 0;
  background: #fff;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: var(--primary);
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-light);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: '+';
  font-size: 24px;
  color: var(--primary);
  transition: var(--transition);
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item > div {
  padding: 0 24px 20px;
}

.faq-item p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* 底部 QR CTA */
.qr-section {
  padding: 100px 0;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
}

.qr-inner {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.qr-content h2 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 20px;
}

.qr-content p {
  font-size: 18px;
  opacity: 0.95;
  margin-bottom: 32px;
}

.qr-image {
  text-align: center;
}

.qr-image img {
  margin: 0 auto 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-xl);
  background: #fff;
  padding: 12px;
  max-width: 260px;
}

.qr-image p {
  font-size: 16px;
  font-weight: 600;
}

/* 页脚 */
.site-footer {
  background: var(--bg-dark);
  color: #cbd5e1;
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo {
  margin-bottom: 16px;
  color: #fff;
}

.footer-brand p {
  font-size: 15px;
  line-height: 1.7;
  max-width: 280px;
}

.footer-links h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-links a,
.footer-links p {
  display: block;
  font-size: 14px;
  color: #94a3b8;
  margin-bottom: 12px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  padding-bottom: 24px;
  text-align: center;
  font-size: 14px;
  color: #64748b;
}

.footer-bottom p {
  margin-bottom: 8px;
}

.footer-bottom .icp {
  margin-top: 12px;
}

.footer-bottom .icp a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #94a3b8;
  padding: 6px 14px;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.05);
  transition: var(--transition);
}

.footer-bottom .icp a::before {
  content: '';
  width: 16px;
  height: 16px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%2394a3b8'%3E%3Cpath d='M12 1L3 5v6c0 5.55 3.84 10.74 9 12 5.16-1.26 9-6.45 9-12V5l-9-4zm0 10.99h7c-.53 4.12-3.28 7.79-7 8.94V12H5V6.3l7-3.11v8.8z'/%3E%3C/svg%3E") center/contain no-repeat;
}

.footer-bottom .icp a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* 回到顶部 */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  font-size: 20px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
}

/* 动画 */
@media (prefers-reduced-motion: no-preference) {
  .highlight-card,
  .scenario-card,
  .advantage-item,
  .pricing-card {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.6s ease forwards;
  }

  .highlight-card:nth-child(1) { animation-delay: 0.1s; }
  .highlight-card:nth-child(2) { animation-delay: 0.2s; }
  .highlight-card:nth-child(3) { animation-delay: 0.3s; }
  .highlight-card:nth-child(4) { animation-delay: 0.4s; }

  .scenario-card:nth-child(1) { animation-delay: 0.1s; }
  .scenario-card:nth-child(2) { animation-delay: 0.2s; }
  .scenario-card:nth-child(3) { animation-delay: 0.3s; }
  .scenario-card:nth-child(4) { animation-delay: 0.4s; }
  .scenario-card:nth-child(5) { animation-delay: 0.5s; }
  .scenario-card:nth-child(6) { animation-delay: 0.6s; }
}

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 响应式 */
@media (max-width: 1024px) {
  .hero-inner,
  .feature-panel.active,
  .qr-inner {
    grid-template-columns: 1fr;
  }

  .hero-qr,
  .qr-image {
    order: -1;
  }

  .qr-card,
  .qr-image img {
    max-width: 280px;
  }

  .hero-stats {
    max-width: 100%;
  }

  .panel-visual {
    order: -1;
  }

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin: 0 auto;
  }

  .pricing-card.recommended {
    transform: none;
  }

  .pricing-card.recommended:hover {
    transform: translateY(-6px);
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    transform: translateY(-150%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
  }

  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .header-inner .btn {
    display: none;
  }

  .hero {
    padding: 120px 0 80px;
  }

  .hero-title {
    font-size: 34px;
  }

  .hero-desc {
    font-size: 16px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

  .section-title {
    font-size: 28px;
  }

  .highlight-grid,
  .scenario-grid {
    grid-template-columns: 1fr;
  }

  .feature-tabs {
    gap: 8px;
  }

  .feature-tab {
    padding: 10px 16px;
    font-size: 14px;
  }

  .feature-panel {
    padding: 28px;
  }

  .panel-content h3 {
    font-size: 24px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .steps::before {
    display: none;
  }

  .qr-content h2 {
    font-size: 30px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 28px;
  }

  .section-title {
    font-size: 24px;
  }

  .feature-panel {
    padding: 20px;
  }

  .phone-mockup {
    width: 100%;
    max-width: 260px;
  }

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

/* 打印优化 */
@media print {
  .site-header,
  .hero-wave,
  .back-to-top,
  .mobile-menu-toggle,
  .feature-tabs,
  .btn {
    display: none !important;
  }

  .hero {
    padding-top: 40px;
  }

  .feature-panel {
    display: block !important;
    page-break-inside: avoid;
    margin-bottom: 24px;
  }

  body {
    color: #000;
  }
}