/* ===== TokenLink 品牌样式体系 ===== */
:root {
  /* 品牌色系 - 科技紫蓝渐变 */
  --tl-primary: #6366f1;
  --tl-primary-dark: #4f46e5;
  --tl-primary-light: #818cf8;
  --tl-secondary: #0f172a;
  --tl-accent: #06b6d4;
  --tl-accent-green: #10b981;
  --tl-accent-orange: #f59e0b;
  --tl-gradient: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
  --tl-gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);

  /* 文本色 */
  --tl-text: #1e293b;
  --tl-text-light: #64748b;
  --tl-text-white: #ffffff;

  /* 背景色 */
  --tl-bg: #ffffff;
  --tl-bg-soft: #f8fafc;
  --tl-bg-dark: #0f172a;

  /* 边框 */
  --tl-border: #e2e8f0;

  /* 间距 */
  --tl-spacing-xs: 4px;
  --tl-spacing-sm: 8px;
  --tl-spacing-md: 16px;
  --tl-spacing-lg: 24px;
  --tl-spacing-xl: 48px;
  --tl-spacing-2xl: 80px;

  /* 圆角 */
  --tl-radius-sm: 6px;
  --tl-radius-md: 12px;
  --tl-radius-lg: 16px;
  --tl-radius-xl: 24px;
  --tl-radius-full: 9999px;

  /* 阴影 */
  --tl-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --tl-shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --tl-shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --tl-shadow-glow: 0 0 40px rgba(99,102,241,0.15);

  /* 字体 */
  --tl-font: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }

/* ===== 导航栏 ===== */
#theme-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--tl-border);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
  gap: 24px;
}

.logo a {
  font-size: 22px;
  font-weight: 800;
  background: var(--tl-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
}

[data-menu-location="header"] {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-menu {
  display: flex;
  gap: 32px;
  align-items: center;
  margin: 0;
  padding: 0;
}

.nav-menu .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--tl-text);
  transition: color 0.3s;
  position: relative;
  white-space: nowrap;
}

.nav-menu .nav-link:hover,
.nav-menu .nav-link.active {
  color: var(--tl-primary);
}

.nav-menu .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--tl-gradient);
  border-radius: 1px;
}

.nav-auth {
  display: flex;
  gap: 12px;
  align-items: center;
}

.btn-login {
  font-size: 14px;
  font-weight: 500;
  color: var(--tl-text);
  padding: 8px 16px;
  border-radius: var(--tl-radius-sm);
  transition: all 0.3s;
}

.btn-login:hover { color: var(--tl-primary); }

.btn-register {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: var(--tl-gradient);
  padding: 8px 20px;
  border-radius: var(--tl-radius-full);
  transition: all 0.3s;
  box-shadow: 0 2px 8px rgba(99,102,241,0.3);
}

.btn-register:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(99,102,241,0.4);
}

/* ===== 用户菜单 ===== */
.user-menu {
  position: relative;
  display: flex;
  align-items: center;
}

.user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--tl-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  transition: transform 0.3s;
}

.user-avatar:hover {
  transform: scale(1.05);
}

.user-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: #fff;
  border-radius: var(--tl-radius-md);
  box-shadow: var(--tl-shadow-lg);
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s;
  z-index: 1000;
}

.user-menu:hover .user-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.user-info {
  padding: 16px;
  border-bottom: 1px solid var(--tl-border);
}

.user-name {
  font-weight: 600;
  color: var(--tl-text);
  margin-bottom: 4px;
}

.user-email {
  font-size: 13px;
  color: var(--tl-text-light);
}

.dropdown-divider {
  height: 1px;
  background: var(--tl-border);
  margin: 8px 0;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  color: var(--tl-text);
  font-size: 14px;
  transition: background 0.3s;
}

.dropdown-item:hover {
  background: var(--tl-bg-soft);
  color: var(--tl-primary);
}

.dropdown-item i {
  width: 16px;
  text-align: center;
}

/* ===== Hero区域 ===== */
.hero-section {
  padding: 160px 0 100px;
  background: var(--tl-gradient-dark);
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(99,102,241,0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 50%, rgba(6,182,212,0.1) 0%, transparent 50%);
  animation: heroGlow 8s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(-2%, 2%); }
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(99,102,241,0.2);
  border: 1px solid rgba(99,102,241,0.3);
  padding: 6px 16px;
  border-radius: var(--tl-radius-full);
  font-size: 14px;
  color: var(--tl-primary-light);
  margin-bottom: 24px;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-title .gradient-text {
  background: var(--tl-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 20px;
  color: rgba(255,255,255,0.7);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

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

.btn-hero-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--tl-gradient);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--tl-radius-full);
  font-size: 16px;
  font-weight: 600;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(99,102,241,0.4);
}

.btn-hero-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(99,102,241,0.5);
}

.btn-hero-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--tl-radius-full);
  font-size: 16px;
  font-weight: 500;
  transition: all 0.3s;
}

.btn-hero-secondary:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.3);
}

/* ===== 核心服务区域 ===== */
.services-section {
  padding: var(--tl-spacing-2xl) 0;
  background: var(--tl-bg);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-label {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--tl-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--tl-secondary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 18px;
  color: var(--tl-text-light);
  max-width: 600px;
  margin: 0 auto;
}

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

.service-card {
  background: var(--tl-bg);
  border: 1px solid var(--tl-border);
  border-radius: var(--tl-radius-lg);
  padding: 32px;
  transition: all 0.3s;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--tl-shadow-lg);
  border-color: var(--tl-primary-light);
}

.service-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--tl-radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.service-icon.purple { background: rgba(99,102,241,0.1); color: var(--tl-primary); }
.service-icon.cyan { background: rgba(6,182,212,0.1); color: var(--tl-accent); }
.service-icon.green { background: rgba(16,185,129,0.1); color: var(--tl-accent-green); }
.service-icon.orange { background: rgba(245,158,11,0.1); color: var(--tl-accent-orange); }

.service-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--tl-secondary);
}

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

/* ===== 数据统计区域 ===== */
.stats-section {
  padding: 64px 0;
  background: var(--tl-gradient-dark);
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}

.stat-item h3 {
  font-size: 42px;
  font-weight: 800;
  background: var(--tl-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-item p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
}

/* ===== 技术优势区域 ===== */
.features-section {
  padding: var(--tl-spacing-2xl) 0;
  background: var(--tl-bg-soft);
}

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

.feature-card {
  background: var(--tl-bg);
  border-radius: var(--tl-radius-lg);
  padding: 40px 32px;
  text-align: center;
  box-shadow: var(--tl-shadow-sm);
  transition: all 0.3s;
}

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

.feature-card .feature-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--tl-secondary);
}

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

/* ===== 热门模型区域 ===== */
.models-section {
  padding: var(--tl-spacing-2xl) 0;
  background: var(--tl-bg);
}

.models-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.model-card {
  background: var(--tl-bg-soft);
  border: 1px solid var(--tl-border);
  border-radius: var(--tl-radius-md);
  padding: 24px;
  text-align: center;
  transition: all 0.3s;
}

.model-card:hover {
  border-color: var(--tl-primary-light);
  box-shadow: var(--tl-shadow-md);
  transform: translateY(-2px);
}

.model-card .model-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.model-card h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--tl-secondary);
  margin-bottom: 4px;
}

.model-card p {
  font-size: 13px;
  color: var(--tl-text-light);
}

/* ===== CTA区域 ===== */
.cta-section {
  padding: var(--tl-spacing-2xl) 0;
  background: var(--tl-gradient);
  color: #fff;
  text-align: center;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.btn-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--tl-primary);
  padding: 14px 36px;
  border-radius: var(--tl-radius-full);
  font-size: 16px;
  font-weight: 700;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.2);
}

/* ===== Footer ===== */
#theme-footer {
  background: var(--tl-secondary);
  color: rgba(255,255,255,0.7);
  padding: 48px 0 24px;
}

.footer-columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}

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

.footer-col ul li {
  margin-bottom: 8px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  transition: color 0.3s;
}

.footer-col ul li a:hover {
  color: var(--tl-primary-light);
}

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

/* ===== 通用组件样式 ===== */
[data-editor-section] {
  padding: var(--tl-spacing-xl) 0;
}

[data-editor-column] {
  display: flex;
  flex-wrap: wrap;
  gap: var(--tl-spacing-md);
}

[data-column-width="100%"] {
  width: 100%;
  flex-direction: column;
}

[data-component-type="text"] h1 { font-size: 2.5rem; margin-bottom: 1rem; color: var(--tl-secondary); }
[data-component-type="text"] h2 { font-size: 2rem; margin-bottom: 0.75rem; color: var(--tl-secondary); }
[data-component-type="text"] h3 { font-size: 1.5rem; margin-bottom: 0.5rem; color: var(--tl-secondary); }
[data-component-type="text"] p { font-size: 1.1rem; color: var(--tl-text-light); line-height: 1.8; }

[data-component-type="button"] .btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--tl-radius-full);
  text-decoration: none;
  font-size: 1rem;
  font-weight: 600;
  transition: all 0.3s;
  cursor: pointer;
  border: 2px solid transparent;
}

[data-component-type="button"] .btn-primary {
  background: var(--tl-gradient);
  color: #fff;
}

[data-component-type="button"] .btn-outline {
  background: transparent;
  color: var(--tl-primary);
  border-color: var(--tl-primary);
}

[data-component-type="image"] img {
  max-width: 100%;
  height: auto;
  border-radius: var(--tl-radius-md);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .models-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer-columns { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero-title { font-size: 36px; }
  .hero-subtitle { font-size: 16px; }
  .section-title { font-size: 28px; }
  .services-grid { grid-template-columns: 1fr; }
  .models-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item h3 { font-size: 32px; }
  .nav-menu { display: none; }
  .footer-columns { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 28px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .models-grid { grid-template-columns: 1fr; }
}

/* ===== 滚动到顶部按钮 ===== */
#scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--tl-gradient);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: var(--tl-shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 999;
}

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

#scroll-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 35px rgba(99, 102, 241, 0.4);
}

#scroll-to-top:active {
  transform: translateY(0);
}

@media (max-width: 768px) {
  #scroll-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
}