/* ==========================================================================
   神盾反挂插件 (SDGOM) - 现代响应式自适应样式表
   支持: PC端、平板端、手机端自适应 | 赛博暗黑极光防护风格
   ========================================================================== */

:root {
  --bg-main: #070a12;
  --bg-secondary: #0d1322;
  --bg-card: rgba(16, 24, 44, 0.72);
  --bg-card-hover: rgba(23, 35, 64, 0.85);
  --border-color: rgba(56, 189, 248, 0.14);
  --border-glow: rgba(56, 189, 248, 0.38);
  
  --primary: #0284c7;
  --primary-light: #38bdf8;
  --primary-glow: rgba(14, 165, 233, 0.35);
  --accent: #6366f1;
  --accent-cyan: #06b6d4;
  --accent-gold: #f59e0b;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;

  --text-main: #f8fafc;
  --text-sub: #94a3b8;
  --text-muted: #64748b;
  
  --header-height: 74px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5), 0 0 0 1px var(--border-color);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.25);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  color: var(--text-main);
  background-color: var(--bg-main);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #111d38 0%, #070a12 55%, #05070d 100%);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
}

/* 科技感背景网格 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(to right, rgba(56, 189, 248, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(56, 189, 248, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

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

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

button, input {
  font-family: inherit;
  outline: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   Header & 导航栏
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(7, 10, 18, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(7, 10, 18, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

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

.brand-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo {
  height: 42px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(56, 189, 248, 0.4));
}

.brand-badge {
  font-size: 11px;
  font-weight: 600;
  color: var(--primary-light);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  display: inline-block;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  color: #fff;
  background: rgba(56, 189, 248, 0.1);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 12px;
  right: 12px;
  height: 2px;
  background: var(--primary-light);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--primary-light);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #1d4ed8);
  box-shadow: 0 6px 20px rgba(2, 132, 199, 0.6);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  font-weight: 600;
  font-size: 14px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(56, 189, 248, 0.3);
  transform: translateY(-1px);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
}

.mobile-menu-btn svg {
  width: 26px;
  height: 26px;
}

/* ==========================================================================
   Mobile Drawer 移动端抽屉导航
   ========================================================================== */
.mobile-drawer-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1050;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-drawer-overlay.open {
  opacity: 1;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100%;
  background: #0d1424;
  border-left: 1px solid var(--border-color);
  z-index: 1100;
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.6);
  transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
}

.mobile-drawer.open {
  right: 0;
}

.drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.drawer-close {
  background: none;
  border: none;
  color: var(--text-sub);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
}

.drawer-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.drawer-link {
  font-size: 15px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-sub);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-link:hover, .drawer-link.active {
  color: #fff;
  background: rgba(56, 189, 248, 0.12);
}

.drawer-cta {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* ==========================================================================
   Hero Section 科技首屏
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 60px 0 50px;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 450px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.22) 0%, rgba(99, 102, 241, 0.08) 50%, transparent 80%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary-light);
  margin-bottom: 24px;
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.15);
}

.hero-tag .dot {
  width: 8px;
  height: 8px;
  background-color: var(--success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.85); }
}

.hero-title {
  font-size: 46px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #ffffff 15%, #e2e8f0 45%, #38bdf8 85%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 18px;
  color: var(--text-sub);
  line-height: 1.6;
  max-width: 760px;
  margin: 0 auto 36px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.btn-hero-primary {
  padding: 13px 32px;
  font-size: 16px;
  font-weight: 700;
  border-radius: var(--radius-full);
}

.btn-hero-secondary {
  padding: 13px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-full);
}

/* 官方客服悬浮面板 */
.support-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 20px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-card);
  margin-top: 10px;
}

.support-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.support-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 8px;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.2);
}

.support-info {
  text-align: left;
}

.support-role {
  font-size: 12px;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: 2px;
}

.support-name {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.support-qq {
  font-family: monospace;
  font-size: 14px;
  color: #cbd5e1;
  letter-spacing: 0.5px;
}

.support-btn-group {
  display: flex;
  gap: 8px;
  margin-top: 6px;
}

.btn-support-sm {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: #fff;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-support-sm:hover {
  background: var(--primary);
  border-color: var(--primary-light);
}

.support-divider {
  width: 1px;
  height: 40px;
  background: var(--border-color);
}

/* 数据统计卡片 */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.stat-card {
  background: rgba(16, 24, 44, 0.5);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-2px);
  background: rgba(23, 35, 64, 0.6);
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  background: linear-gradient(135deg, #ffffff, #38bdf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-sub);
}

/* ==========================================================================
   Section 公用标题样式
   ========================================================================== */
.section {
  padding: 70px 0;
  position: relative;
}

.section-title-wrap {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 50px;
}

.section-badge {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-light);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 10px;
  display: inline-block;
  background: rgba(56, 189, 248, 0.1);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.6;
}

/* ==========================================================================
   Feature Cards 六大核心特色矩阵
   ========================================================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--primary-light), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 16px 36px -12px rgba(0, 0, 0, 0.6), 0 0 25px rgba(56, 189, 248, 0.15);
  background: var(--bg-card-hover);
}

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

.feature-icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.22);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  box-shadow: 0 4px 12px rgba(56, 189, 248, 0.15);
}

.feature-icon-wrap img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.feature-card-title {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature-card-badge {
  font-size: 11px;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.feature-card-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 18px;
}

.feature-points {
  list-style: none;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-points li {
  font-size: 13px;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature-points li::before {
  content: "✓";
  color: var(--primary-light);
  font-weight: 700;
  font-size: 12px;
}

/* ==========================================================================
   UI Showcase 轮播展示 & 灯箱
   ========================================================================== */
.gallery-section {
  background: rgba(13, 19, 34, 0.6);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.gallery-container {
  max-width: 1040px;
  margin: 0 auto;
}

/* 分类标签切换 */
.gallery-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

.gallery-tab-btn {
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-sub);
  cursor: pointer;
  transition: var(--transition);
}

.gallery-tab-btn:hover, .gallery-tab-btn.active {
  color: #fff;
  background: var(--primary);
  border-color: var(--primary-light);
  box-shadow: 0 0 16px var(--primary-glow);
}

/* 主轮播视窗 */
.showcase-viewport {
  position: relative;
  background: #000;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(56, 189, 248, 0.25);
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 30px rgba(14, 165, 233, 0.15);
}

.showcase-window-header {
  background: #0d1424;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.dot-red { background: #ef4444; }
.dot-yellow { background: #f59e0b; }
.dot-green { background: #10b981; }

.window-title {
  font-size: 12px;
  color: var(--text-sub);
  font-family: monospace;
}

.showcase-stage {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9 ratio */
  background: #070a12;
  cursor: zoom-in;
}

.showcase-stage img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: opacity 0.3s ease;
  background: #0b0f19;
}

.showcase-prev, .showcase-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(7, 10, 18, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition);
  backdrop-filter: blur(8px);
}

.showcase-prev { left: 16px; }
.showcase-next { right: 16px; }

.showcase-prev:hover, .showcase-next:hover {
  background: var(--primary);
  border-color: var(--primary-light);
  box-shadow: 0 0 16px var(--primary-glow);
}

/* 底部缩略图导航 */
.showcase-thumbs {
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 16px 4px 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) transparent;
}

.thumb-item {
  flex: 0 0 100px;
  height: 60px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  overflow: hidden;
  cursor: pointer;
  opacity: 0.6;
  transition: var(--transition);
  background: #000;
}

.thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thumb-item:hover {
  opacity: 0.9;
}

.thumb-item.active {
  opacity: 1;
  border-color: var(--primary-light);
  box-shadow: 0 0 12px var(--primary-glow);
}

/* ==========================================================================
   Agent Query 代理查询模块
   ========================================================================== */
.agent-query-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(16px);
}

.query-form-box {
  max-width: 680px;
  margin: 0 auto;
}

.query-input-group {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
}

.query-input {
  flex: 1;
  background: rgba(7, 10, 18, 0.8);
  border: 1px solid rgba(56, 189, 248, 0.25);
  border-radius: var(--radius-full);
  padding: 14px 22px;
  font-size: 15px;
  color: #fff;
  transition: var(--transition);
}

.query-input:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 16px var(--primary-glow);
  background: rgba(10, 15, 28, 0.95);
}

.query-btn {
  padding: 14px 30px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-full);
  border: none;
  background: linear-gradient(135deg, #0284c7, #2563eb);
  color: #fff;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.query-btn:hover {
  background: linear-gradient(135deg, #0369a1, #1d4ed8);
  box-shadow: 0 0 20px var(--primary-glow);
}

.query-result-box {
  display: none;
  margin-top: 20px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 15px;
  animation: fadeIn 0.3s ease;
}

.query-result-box.success {
  display: block;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #34d399;
}

.query-result-box.danger {
  display: block;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #f87171;
}

.official-group-list {
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.official-group-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-light);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.group-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.group-badge-chip {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-family: monospace;
  color: #cbd5e1;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.group-badge-chip:hover {
  background: rgba(56, 189, 248, 0.15);
  border-color: var(--primary-light);
  color: #fff;
}

/* ==========================================================================
   Download Hub & 快速入口
   ========================================================================== */
.hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.hub-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

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

.hub-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.hub-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
}

.hub-card-title {
  font-size: 17px;
  font-weight: 700;
  color: #fff;
}

.hub-card-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}

.hub-card-action {
  margin-top: auto;
}

/* ==========================================================================
   Certificates 法律与资质证书
   ========================================================================== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  max-width: 800px;
  margin: 0 auto;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
  transition: var(--transition);
  cursor: zoom-in;
}

.cert-card:hover {
  border-color: var(--primary-light);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), 0 0 20px var(--primary-glow);
  transform: scale(1.02);
}

.cert-card img {
  border-radius: var(--radius-sm);
  width: 100%;
  height: auto;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
}

.cert-caption {
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 10px;
  font-weight: 500;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  background: #04070d;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-sub);
  margin-top: 14px;
  line-height: 1.7;
}

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

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 14px;
  color: var(--text-sub);
}

.footer-links a:hover {
  color: var(--primary-light);
  padding-left: 4px;
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.footer-bottom p {
  margin-bottom: 6px;
}

/* ==========================================================================
   Mobile Bottom Bar 移动端常驻底部快捷栏
   ========================================================================== */
.mobile-bottom-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: rgba(7, 10, 18, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-color);
  z-index: 999;
  justify-content: space-around;
  align-items: center;
  padding: 0 8px;
}

.mobile-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-sub);
  font-size: 11px;
  gap: 4px;
  flex: 1;
  height: 100%;
}

.mobile-bar-item svg {
  width: 20px;
  height: 20px;
}

.mobile-bar-item.active, .mobile-bar-item:active {
  color: var(--primary-light);
}

.mobile-bar-item.highlight {
  color: #fff;
}
.mobile-bar-item.highlight span {
  background: var(--primary);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

/* ==========================================================================
   Modals & Lightbox 弹窗与全屏大图查看器
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(10px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-box {
  background: #0d1527;
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 35px rgba(56, 189, 248, 0.2);
  transform: scale(0.95);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal-box {
  transform: scale(1);
}

.modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
}

.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-sub);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
}

.modal-body {
  padding: 24px;
  overflow-y: auto;
  font-size: 14px;
  color: #cbd5e1;
  line-height: 1.7;
}

.modal-body p {
  margin-bottom: 14px;
}

.modal-body .warn-text {
  color: #f87171;
  background: rgba(239, 68, 68, 0.1);
  padding: 10px 14px;
  border-left: 3px solid #ef4444;
  border-radius: 4px;
  margin: 12px 0;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Lightbox 查看大图 */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  z-index: 2500;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.9);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  font-size: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.lightbox-close:hover {
  background: var(--danger);
  border-color: var(--danger);
}

/* Toast 提示 */
.toast-notice {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(13, 21, 39, 0.95);
  border: 1px solid var(--primary-light);
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6), 0 0 20px var(--primary-glow);
  z-index: 3000;
  opacity: 0;
  visibility: hidden;
  transition: all 0.25s ease;
}

.toast-notice.show {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   Responsive 媒体查询 (平板与手机端适配)
   ========================================================================== */
@media (max-width: 1024px) {
  .desktop-nav {
    display: none;
  }
  .mobile-menu-btn {
    display: block;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hub-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 62px;
  }
  
  body {
    padding-bottom: 60px; /* 留出底部快捷栏空间 */
  }

  .mobile-bottom-bar {
    display: flex;
  }

  .hero-section {
    padding: 40px 0 30px;
  }

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

  .hero-desc {
    font-size: 15px;
    margin-bottom: 24px;
  }

  .support-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    gap: 16px;
  }

  .support-divider {
    display: none;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-number {
    font-size: 26px;
  }

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 26px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .hub-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cert-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .query-input-group {
    flex-direction: column;
  }

  .query-btn {
    width: 100%;
  }

  .header-cta .btn-primary {
    display: none; /* 移动端在抽屉或底部栏体现 */
  }
}