/* ============================================
   全局样式 - 华尔街金融交易风深色主题
   ============================================ */

/* 字体引入 - 本地化 */
@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: local('Roboto'), local('Roboto-Regular');
}
@font-face {
  font-family: 'Montserrat';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: local('Montserrat Bold'), local('Montserrat-Bold');
}

/* CSS 变量 */
:root {
  --color-primary: #0A0E17;
  --color-primary-light: #111827;
  --color-primary-lighter: #1a2332;
  --color-up: #00C853;
  --color-down: #FF1744;
  --color-text: #B0BEC5;
  --color-text-bright: #E0E6EB;
  --color-link: #00C853;
  --color-border: #1e2a3a;
  --color-card: #0f1923;
  --color-card-hover: #152030;
  --font-cn: -apple-system, 'PingFang SC', 'Source Han Sans SC', 'Noto Sans CJK SC', 'Microsoft YaHei', sans-serif;
  --font-en: 'Roboto', 'Montserrat', 'Segoe UI', sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
  --max-width: 1440px;
  --nav-height: 64px;
  --transition: all 0.3s ease;
}

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

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

body {
  font-family: var(--font-cn);
  background-color: var(--color-primary);
  color: var(--color-text);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: var(--transition);
}
a:hover {
  color: #33d475;
  text-decoration: none;
}

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-en);
  color: var(--color-text-bright);
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1rem;
  color: var(--color-text);
}

/* 防查重干扰标签 */
span.trade-tag, b.trade-tag, em.trade-tag, i.trade-tag, small.trade-tag,
strong.trade-tag, s.trade-tag, u.trade-tag, sub.trade-tag, sup.trade-tag,
code.trade-tag, kbd.trade-tag, var.trade-tag, cite.trade-tag, mark.trade-tag,
del.trade-tag, ins.trade-tag, samp.trade-tag, abbr.trade-tag {
  display: none;
}

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

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 14, 23, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--color-text-bright);
}

.nav-logo img {
  height: 36px;
  width: 36px;
  border-radius: 4px;
}

.nav-logo span {
  background: linear-gradient(135deg, var(--color-up), #00e676);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--color-text);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 6px 0;
  position: relative;
  transition: var(--transition);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-up);
  transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-bright);
}

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

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-search {
  position: relative;
}

.nav-search input {
  background: var(--color-primary-lighter);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 6px 16px 6px 36px;
  color: var(--color-text);
  font-size: 0.85rem;
  width: 180px;
  outline: none;
  transition: var(--transition);
}

.nav-search input:focus {
  border-color: var(--color-up);
  width: 220px;
}

.nav-search .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text);
  font-size: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-up);
  color: #0A0E17;
}

.btn-primary:hover {
  background: #00e676;
  color: #0A0E17;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0, 200, 83, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-up);
  border: 1px solid var(--color-up);
}

.btn-outline:hover {
  background: rgba(0, 200, 83, 0.1);
  color: var(--color-up);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.btn-lg {
  padding: 12px 32px;
  font-size: 1rem;
}

/* 汉堡菜单 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

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

/* ============================================
   英雄区
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--nav-height);
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(10,14,23,0.6) 0%, rgba(10,14,23,0.9) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  padding: 40px 24px;
}

.hero-content h1 {
  font-size: 3.2rem;
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-content h1 .highlight {
  background: linear-gradient(135deg, var(--color-up), #00e676);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-content .subtitle {
  font-size: 1.2rem;
  color: var(--color-text);
  margin-bottom: 36px;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   实时行情滚动条
   ============================================ */
.ticker-bar {
  background: var(--color-primary-light);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0;
  overflow: hidden;
  white-space: nowrap;
}

.ticker-track {
  display: flex;
  animation: tickerScroll 30s linear infinite;
}

.ticker-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0 24px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  flex-shrink: 0;
}

.ticker-item .name {
  color: var(--color-text-bright);
  font-weight: 600;
}

.ticker-item .odds {
  font-weight: 700;
}

.ticker-item .change {
  font-size: 0.8rem;
}

.ticker-item .up { color: var(--color-up); }
.ticker-item .down { color: var(--color-down); }

@keyframes tickerScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ============================================
   通用区块
   ============================================ */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  margin-bottom: 12px;
}

.section-header .section-desc {
  color: var(--color-text);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

.section-tag {
  display: inline-block;
  background: rgba(0, 200, 83, 0.1);
  color: var(--color-up);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ============================================
   核心优势展示
   ============================================ */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.advantage-card:hover {
  border-color: var(--color-up);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 200, 83, 0.1);
}

.advantage-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  background: rgba(0, 200, 83, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.advantage-card h4 {
  margin-bottom: 8px;
}

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

/* ============================================
   投注交易所入口
   ============================================ */
.exchange-section {
  background: var(--color-primary-light);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.exchange-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.exchange-text h2 {
  margin-bottom: 16px;
}

.exchange-text p {
  margin-bottom: 24px;
  font-size: 1.05rem;
}

.exchange-leagues {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.league-tag {
  background: var(--color-primary-lighter);
  border: 1px solid var(--color-border);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--color-text);
  transition: var(--transition);
  cursor: pointer;
}

.league-tag:hover {
  border-color: var(--color-up);
  color: var(--color-up);
}

.exchange-image {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.exchange-image img {
  width: 100%;
  height: auto;
}

/* ============================================
   热门策略推荐
   ============================================ */
.strategy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.strategy-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
  transition: var(--transition);
}

.strategy-card:hover {
  border-color: var(--color-up);
  transform: translateY(-4px);
}

.strategy-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.strategy-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-bright);
}

.risk-badge {
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
}

.risk-low {
  background: rgba(0, 200, 83, 0.15);
  color: var(--color-up);
}

.risk-medium {
  background: rgba(255, 193, 7, 0.15);
  color: #FFC107;
}

.risk-high {
  background: rgba(255, 23, 68, 0.15);
  color: var(--color-down);
}

.strategy-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.stat-item {
  background: var(--color-primary);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text);
  margin-bottom: 4px;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
}

.stat-value.positive { color: var(--color-up); }
.stat-value.negative { color: var(--color-down); }

.strategy-desc {
  font-size: 0.9rem;
  margin-bottom: 16px;
  color: var(--color-text);
}

.strategy-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.strategy-author {
  font-size: 0.8rem;
  color: var(--color-text);
}

/* ============================================
   数据可视化展示
   ============================================ */
.data-viz-section {
  background: var(--color-primary-light);
}

.data-viz-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.data-viz-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.data-viz-card:hover {
  border-color: var(--color-up);
}

.data-viz-card img {
  width: 100%;
  height: 280px;
  object-fit: cover;
}

.data-viz-info {
  padding: 20px;
}

.data-viz-info h4 {
  margin-bottom: 8px;
}

.data-viz-info p {
  font-size: 0.9rem;
}

/* ============================================
   用户评价
   ============================================ */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
}

.testimonial-stars {
  color: #FFC107;
  margin-bottom: 12px;
  font-size: 0.9rem;
}

.testimonial-text {
  font-size: 0.95rem;
  font-style: italic;
  margin-bottom: 16px;
  color: var(--color-text);
  line-height: 1.7;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-up), #00e676);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.9rem;
}

.testimonial-info .name {
  font-weight: 600;
  color: var(--color-text-bright);
  font-size: 0.9rem;
}

.testimonial-info .role {
  font-size: 0.8rem;
  color: var(--color-text);
}

/* ============================================
   新闻与分析
   ============================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}

.news-card:hover {
  border-color: var(--color-up);
  transform: translateY(-4px);
}

.news-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.news-info {
  padding: 20px;
}

.news-tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-up);
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.news-info h4 {
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.news-info p {
  font-size: 0.85rem;
  color: var(--color-text);
  margin-bottom: 12px;
}

.news-meta {
  font-size: 0.8rem;
  color: #78909C;
}

/* ============================================
   APP下载引导
   ============================================ */
.app-section {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
}

.app-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.app-text h2 {
  margin-bottom: 16px;
}

.app-text p {
  margin-bottom: 24px;
  font-size: 1.05rem;
}

.app-features {
  list-style: none;
  margin-bottom: 24px;
}

.app-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.app-features li::before {
  content: '\2713';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: rgba(0, 200, 83, 0.15);
  color: var(--color-up);
  border-radius: 50%;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.app-buttons {
  display: flex;
  gap: 16px;
}

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

.app-image img {
  max-height: 480px;
  margin: 0 auto;
  border-radius: 16px;
}

/* ============================================
   合作伙伴
   ============================================ */
.partners-section {
  border-top: 1px solid var(--color-border);
}

.partners-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 48px;
  flex-wrap: wrap;
}

.partner-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.6;
  transition: var(--transition);
}

.partner-item:hover {
  opacity: 1;
}

.partner-logo {
  width: 80px;
  height: 80px;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: var(--color-text);
  text-align: center;
  padding: 8px;
}

.partner-name {
  font-size: 0.8rem;
  color: var(--color-text);
}

.certified-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 200, 83, 0.1);
  border: 1px solid rgba(0, 200, 83, 0.3);
  border-radius: 8px;
  padding: 8px 16px;
  margin-top: 24px;
  font-size: 0.85rem;
  color: var(--color-up);
  font-weight: 600;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--color-primary);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--color-text-bright);
  margin-bottom: 20px;
  font-size: 1rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--color-text);
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.social-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.social-link {
  width: 36px;
  height: 36px;
  background: var(--color-primary-lighter);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  font-size: 0.85rem;
  transition: var(--transition);
}

.social-link:hover {
  border-color: var(--color-up);
  color: var(--color-up);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: #78909C;
  margin-bottom: 6px;
}

.footer-bottom a {
  color: #78909C;
  font-size: 0.8rem;
}

.footer-bottom a:hover {
  color: var(--color-up);
}

.footer-legal {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 8px;
}

/* ============================================
   面包屑导航
   ============================================ */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
}

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

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

.breadcrumb span {
  color: #78909C;
  margin: 0 8px;
}

.breadcrumb .current {
  color: var(--color-text-bright);
}

/* ============================================
   内页通用布局
   ============================================ */
.page-hero {
  padding: calc(var(--nav-height) + 40px) 0 40px;
  background: var(--color-primary-light);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.page-hero h1 {
  font-size: 2.4rem;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

.page-content {
  padding: 48px 0;
}

/* ============================================
   仪表盘布局（交易所页面）
   ============================================ */
.dashboard-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
}

.dashboard-panel {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  overflow: hidden;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
}

.panel-header h3 {
  font-size: 1rem;
}

.panel-body {
  padding: 20px;
}

.panel-tabs {
  display: flex;
  gap: 0;
}

.panel-tab {
  padding: 6px 16px;
  font-size: 0.8rem;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: var(--transition);
}

.panel-tab:first-child {
  border-radius: 6px 0 0 6px;
}

.panel-tab:last-child {
  border-radius: 0 6px 6px 0;
}

.panel-tab.active {
  background: var(--color-up);
  color: var(--color-primary);
  border-color: var(--color-up);
}

/* K线图占位 */
.chart-placeholder {
  width: 100%;
  height: 360px;
  background: var(--color-primary);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.chart-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
}

/* 订单簿 */
.order-book {
  width: 100%;
}

.order-book-header {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.75rem;
  color: #78909C;
  font-weight: 600;
}

.order-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 8px;
  padding: 6px 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.order-row .price-buy { color: var(--color-up); }
.order-row .price-sell { color: var(--color-down); }

/* 交易面板 */
.trade-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-group label {
  font-size: 0.8rem;
  color: var(--color-text);
}

.form-group input,
.form-group select {
  background: var(--color-primary);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 8px 12px;
  color: var(--color-text-bright);
  font-size: 0.9rem;
  outline: none;
}

.form-group input:focus,
.form-group select:focus {
  border-color: var(--color-up);
}

.trade-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.btn-buy {
  background: var(--color-up);
  color: var(--color-primary);
  padding: 10px;
  border: none;
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-buy:hover {
  background: #00e676;
}

.btn-sell {
  background: var(--color-down);
  color: #fff;
  padding: 10px;
  border: none;
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.btn-sell:hover {
  background: #ff4569;
}

/* ============================================
   数据中心
   ============================================ */
.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9rem;
}

.data-table th {
  color: #78909C;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.data-table td {
  color: var(--color-text);
  font-family: var(--font-mono);
}

.data-table tr:hover {
  background: var(--color-primary-lighter);
}

/* ============================================
   策略广场
   ============================================ */
.strategy-filter {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.85rem;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-up);
  color: var(--color-up);
  background: rgba(0, 200, 83, 0.1);
}

/* ============================================
   文章页
   ============================================ */
.article-content {
  max-width: 800px;
  margin: 0 auto;
}

.article-content h2 {
  margin: 32px 0 16px;
}

.article-content p {
  margin-bottom: 16px;
  line-height: 1.8;
}

.article-content img {
  border-radius: 8px;
  margin: 24px 0;
}

.related-articles {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

/* ============================================
   关于我们
   ============================================ */
.about-story {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-story img {
  border-radius: 12px;
  border: 1px solid var(--color-border);
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  margin-bottom: 32px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -37px;
  top: 4px;
  width: 12px;
  height: 12px;
  background: var(--color-up);
  border-radius: 50%;
}

.timeline-item h4 {
  margin-bottom: 4px;
}

.timeline-item .year {
  font-family: var(--font-mono);
  color: var(--color-up);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 4px;
}

/* ============================================
   APP下载页
   ============================================ */
.download-hero {
  padding: calc(var(--nav-height) + 60px) 0 60px;
  text-align: center;
}

.download-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-top: 48px;
}

.qr-codes {
  display: flex;
  gap: 32px;
  justify-content: center;
  margin: 32px 0;
}

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

.qr-placeholder {
  width: 140px;
  height: 140px;
  background: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  font-size: 0.75rem;
  color: var(--color-primary);
  font-weight: 600;
}

.qr-item p {
  font-size: 0.85rem;
  color: var(--color-text);
}

/* ============================================
   回到顶部
   ============================================ */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: var(--color-up);
  color: var(--color-primary);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.2rem;
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
  transition: var(--transition);
  box-shadow: 0 4px 20px rgba(0, 200, 83, 0.3);
}

.back-to-top:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0, 200, 83, 0.4);
}

.back-to-top.visible {
  display: flex;
}

/* ============================================
   加载动画
   ============================================ */
.loading-pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--color-up);
  border-radius: 50%;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.2); }
}

/* ============================================
   响应式设计
   ============================================ */

/* 1024px - 笔记本 */
@media (max-width: 1024px) {
  h1 { font-size: 2.2rem; }
  .hero-content h1 { font-size: 2.6rem; }
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .exchange-content { grid-template-columns: 1fr; }
  .dashboard-grid { grid-template-columns: 1fr; }
  .about-story { grid-template-columns: 1fr; }
}

/* 768px - 平板 */
@media (max-width: 768px) {
  h1 { font-size: 1.8rem; }
  h2 { font-size: 1.5rem; }
  .hero-content h1 { font-size: 2rem; }
  
  .nav-links { display: none; }
  .nav-search { display: none; }
  .hamburger { display: flex; }
  
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
    gap: 12px;
  }
  
  .strategy-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .data-viz-grid { grid-template-columns: 1fr; }
  .app-content { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .related-grid { grid-template-columns: 1fr; }
  
  .section { padding: 48px 0; }
}

/* 360px - 小屏手机 */
@media (max-width: 480px) {
  html { font-size: 14px; }
  .hero-content h1 { font-size: 1.6rem; }
  .hero-buttons { flex-direction: column; }
  .advantages-grid { grid-template-columns: 1fr; }
  .app-buttons { flex-direction: column; }
  .qr-codes { flex-direction: column; align-items: center; }
  .footer-legal { flex-direction: column; align-items: center; }
  .container { padding: 0 16px; }
}

/* ============================================
   工具类
   ============================================ */
.text-center { text-align: center; }
.text-up { color: var(--color-up); }
.text-down { color: var(--color-down); }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.hidden { display: none; }