/* ===== 全局样式 ===== */
:root {
  --bg: #0a0a14;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(124, 107, 255, 0.4);
  --text: #e8e8f0;
  --text-secondary: #8888a0;
  --text-tertiary: #555568;
  --primary: #7C6BFF;
  --primary-light: #9D8FFF;
  --primary-dark: #5B4DD9;
  --accent: #00D4FF;
  --success: #43e97b;
  --warning: #fa709a;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(124, 107, 255, 0.15);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(124, 107, 255, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(0, 212, 255, 0.05) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 20, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  transition: all var(--transition);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 800;
  color: white;
  box-shadow: 0 4px 12px rgba(124, 107, 255, 0.3);
}

.logo-text {
  font-size: 20px;
  font-weight: 700;
  background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-search {
  flex: 1;
  max-width: 400px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-search input {
  flex: 1;
  height: 38px;
  padding: 0 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: all var(--transition);
}

.nav-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(124, 107, 255, 0.15);
}

.search-btn {
  height: 38px;
  padding: 0 16px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
  border-radius: 10px;
  color: white;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.search-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(124, 107, 255, 0.4);
}

.nav-links {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}

.nav-link {
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text);
  background: var(--bg-card);
}

/* ===== 页面切换 ===== */
.page {
  display: none;
  min-height: calc(100vh - 64px - 120px);
}

.page.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

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

/* ===== Hero 区域 ===== */
.hero {
  position: relative;
  padding: 80px 24px 60px;
  text-align: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(124, 107, 255, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(0, 212, 255, 0.1) 0%, transparent 60%);
  z-index: -1;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
  position: relative;
}

.hero-title {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff 0%, #c4c4d4 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.hero-search {
  display: flex;
  gap: 12px;
  max-width: 560px;
  margin: 0 auto 24px;
}

.hero-search input {
  flex: 1;
  height: 52px;
  padding: 0 20px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: all var(--transition);
}

.hero-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(124, 107, 255, 0.15);
}

.hero-search-btn {
  height: 52px;
  padding: 0 28px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border: none;
  border-radius: 14px;
  color: white;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.hero-search-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124, 107, 255, 0.4);
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.hero-tag {
  padding: 8px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}

.hero-tag:hover {
  border-color: var(--primary);
  color: var(--primary-light);
  background: rgba(124, 107, 255, 0.08);
}

/* ===== Section 通用 ===== */
.section {
  padding: 40px 0;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-title {
  font-size: 22px;
  font-weight: 700;
}

.section-more {
  font-size: 14px;
  color: var(--primary-light);
  transition: all var(--transition);
}

.section-more:hover {
  color: var(--accent);
}

/* ===== 分类宫格 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.category-card {
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  text-align: center;
  transition: all var(--transition);
}

.category-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.category-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.category-name {
  font-size: 14px;
  font-weight: 600;
}

.category-count {
  font-size: 12px;
  color: var(--text-tertiary);
}

/* ===== 工具网格 ===== */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.tool-card {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity var(--transition);
}

.tool-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.tool-card:hover::before {
  opacity: 1;
}

.tool-header {
  display: flex;
  align-items: center;
  gap: 12px;
}

.tool-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: cover;
  background: var(--bg-card);
  flex-shrink: 0;
}

.tool-name {
  font-size: 16px;
  font-weight: 600;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tool-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 10px;
  font-weight: 600;
}

.badge-hot {
  background: rgba(250, 112, 154, 0.15);
  color: #fa709a;
}

.badge-new {
  background: rgba(67, 233, 123, 0.15);
  color: #43e97b;
}

.tool-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.tool-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tool-tag {
  padding: 3px 8px;
  background: rgba(124, 107, 255, 0.08);
  border-radius: 6px;
  font-size: 11px;
  color: var(--primary-light);
}

/* ===== 分类 Tab ===== */
.category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 16px;
}

.cat-tab {
  padding: 8px 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
}

.cat-tab:hover {
  color: var(--text);
  background: var(--bg-card);
}

.cat-tab.active {
  color: white;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-color: var(--primary);
}

.subcategory-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0 24px;
}

.subcat-btn {
  padding: 5px 14px;
  border-radius: 8px;
  font-size: 13px;
  color: var(--text-tertiary);
  cursor: pointer;
  transition: all var(--transition);
  background: transparent;
  border: 1px solid transparent;
}

.subcat-btn:hover {
  color: var(--text-secondary);
  background: var(--bg-card);
}

.subcat-btn.active {
  color: var(--primary-light);
  border-color: var(--border);
  background: var(--bg-card);
}

/* ===== 快讯列表 ===== */
.news-tabs {
  display: flex;
  gap: 8px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.news-tab {
  padding: 8px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  background: transparent;
  border: 1px solid var(--border);
}

.news-tab.active {
  color: white;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-color: var(--primary);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 24px 0;
}

.news-card {
  padding: 24px;
  cursor: pointer;
  transition: all var(--transition);
}

.news-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.news-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  margin-bottom: 12px;
}

.news-tag.purple { background: rgba(124, 107, 255, 0.15); color: var(--primary-light); }
.news-tag.green { background: rgba(67, 233, 123, 0.15); color: var(--success); }
.news-tag.blue { background: rgba(0, 212, 255, 0.15); color: var(--accent); }
.news-tag.gold { background: rgba(250, 209, 112, 0.15); color: #fad170; }

.news-title {
  font-size: 17px;
  font-weight: 600;
  margin-bottom: 8px;
  line-height: 1.4;
}

.news-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.news-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--text-tertiary);
}

.news-source::before { content: '来源：'; }
.news-date::before { content: '📅 '; }

/* ===== 白皮书 ===== */
.whitepaper-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
  padding: 24px 0;
}

.whitepaper-card {
  padding: 24px;
  transition: all var(--transition);
  cursor: pointer;
}

.whitepaper-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.whitepaper-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
  background: rgba(250, 209, 112, 0.15);
  color: #fad170;
  margin-bottom: 12px;
}

.whitepaper-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
}

.whitepaper-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== 关于页 ===== */
.about-card {
  padding: 48px;
  text-align: center;
  margin: 48px 0;
}

.about-title {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 20px;
}

.about-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.about-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.about-stat {
  text-align: center;
}

.stat-num {
  font-size: 32px;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.about-contact {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 2;
}

/* ===== 详情弹窗 ===== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-overlay.active {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: linear-gradient(135deg, #12121e 0%, #0e0e16 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  max-width: 560px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  z-index: 10;
}

.modal-close:hover {
  color: var(--text);
  background: var(--bg-card-hover);
}

.modal-header {
  padding: 32px 32px 24px;
  text-align: center;
  position: relative;
}

.modal-header-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  z-index: 0;
}

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

.modal-icon {
  width: 80px;
  height: 80px;
  border-radius: 20px;
  margin-bottom: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.modal-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.modal-body {
  padding: 24px 32px;
}

.modal-section {
  margin-bottom: 24px;
}

.modal-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

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

.modal-related {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--transition);
}

.related-item:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

.related-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
}

.related-info {
  flex: 1;
  overflow: hidden;
}

.related-name {
  font-size: 14px;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.related-desc {
  font-size: 12px;
  color: var(--text-tertiary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.modal-footer {
  padding: 0 32px 32px;
  display: flex;
  gap: 12px;
}

.btn-primary {
  flex: 1;
  height: 48px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124, 107, 255, 0.4);
}

.btn-secondary {
  height: 48px;
  padding: 0 20px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--bg-card);
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-hover);
}

/* ===== 空状态 ===== */
.empty-state {
  text-align: center;
  padding: 80px 24px;
}

.empty-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.empty-state p {
  color: var(--text-tertiary);
  font-size: 15px;
}

/* ===== 页脚 ===== */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  text-align: center;
}

.footer-text {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-tertiary);
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .nav-search { display: none; }
  .nav-links { gap: 0; }
  .nav-link { padding: 6px 10px; font-size: 13px; }
  .hero { padding: 48px 16px 40px; }
  .hero-title { font-size: 32px; }
  .hero-subtitle { font-size: 15px; }
  .hero-search { flex-direction: column; }
  .hero-search-btn { width: 100%; }
  .category-grid { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .category-card { padding: 16px 8px; }
  .category-icon { width: 44px; height: 44px; font-size: 22px; }
  .tool-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .section { padding: 24px 0; }
  .section-title { font-size: 18px; }
  .modal-content { max-height: 90vh; border-radius: 16px; }
  .modal-header { padding: 24px 24px 20px; }
  .modal-body { padding: 20px 24px; }
  .modal-footer { padding: 0 24px 24px; flex-direction: column; }
  .about-card { padding: 32px 20px; }
  .about-stats { gap: 24px; }
  .container { padding: 0 16px; }
}

@media (max-width: 480px) {
  .logo-text { display: none; }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .tool-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 26px; }
  .hero-tags { gap: 6px; }
  .hero-tag { font-size: 12px; padding: 6px 12px; }
}

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }