/* roulang page: index */
/* =========================================================
   设计变量与基础 Reset
   ========================================================= */
:root {
  --primary: #e11d48;
  --primary-dark: #be123c;
  --primary-light: #fff1f2;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --text: #1e293b;
  --text-muted: #64748b;
  --bg: #f8fafc;
  --white: #ffffff;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
  --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 60px rgba(15, 23, 42, 0.12);
  --transition: all 0.3s ease;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

button, input, textarea, select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 88px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 16px;
  border-radius: 30px;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark);
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .section-subtitle { font-size: 15px; }
}

/* =========================================================
   按钮
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 30px;
  border-radius: 50px;
  transition: var(--transition);
  line-height: 1.4;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(225, 29, 72, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(225, 29, 72, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--white);
  transform: translateY(-2px);
}

.btn-outline-dark {
  background: transparent;
  color: var(--dark);
  border-color: var(--border);
}

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

.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
}

.btn-block {
  width: 100%;
}

.btn:focus, button:focus {
  outline: 3px solid rgba(225, 29, 72, 0.3);
  outline-offset: 2px;
}

/* =========================================================
   导航 Header - SaaS 命令栏风格
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

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

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary) 0%, #f43f5e 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 1px;
  box-shadow: 0 4px 12px rgba(225, 29, 72, 0.3);
}

.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
}

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 10px 18px;
  border-radius: 30px;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: var(--dark);
  background: var(--bg);
}

.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
  transition: var(--transition);
}

.nav-link.active::after,
.nav-link:hover::after {
  width: 18px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 9px 18px;
  transition: var(--transition);
  width: 220px;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(225, 29, 72, 0.12);
  background: var(--white);
}

.search-box i {
  color: var(--text-muted);
  font-size: 14px;
}

.search-box input {
  border: none;
  background: transparent;
  font-size: 14px;
  width: 100%;
  color: var(--text);
}

.search-box input::placeholder {
  color: var(--text-muted);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  flex-shrink: 0;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 992px) {
  .main-nav {
    display: none;
    position: absolute;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 16px 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  .main-nav.open {
    display: flex;
  }

  .nav-link {
    font-size: 16px;
    padding: 12px 16px;
    width: 100%;
    border-radius: 10px;
  }

  .search-box {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

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

@media (max-width: 520px) {
  .brand-text {
    font-size: 17px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 13px;
  }
}

/* =========================================================
   Hero 首屏
   ========================================================= */
.hero {
  position: relative;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.82) 60%, rgba(225, 29, 72, 0.35) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: var(--white);
  padding: 120px 0 100px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(225, 29, 72, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 18px;
  border-radius: 30px;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}

.hero-badge i {
  color: #fbbf24;
}

.hero-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 1px;
  margin-bottom: 20px;
}

.hero-title .highlight {
  background: linear-gradient(135deg, #f43f5e, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-desc {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 40px;
}

.hero-stat {
  text-align: left;
}

.hero-stat-number {
  font-size: 38px;
  font-weight: 800;
  color: var(--white);
  line-height: 1.2;
}

.hero-stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  margin-top: 4px;
  letter-spacing: 1px;
}

@media (max-width: 768px) {
  .hero {
    padding: 80px 0 70px;
  }

  .hero-title {
    font-size: 36px;
  }

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

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-number {
    font-size: 28px;
  }
}

/* =========================================================
   核心特色板块
   ========================================================= */
.features {
  background: var(--white);
}

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

.feature-card {
  padding: 40px 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--white);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, #f43f5e 100%);
  opacity: 0;
  transition: var(--transition);
}

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

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

.feature-icon {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 24px;
  color: var(--white);
  background: linear-gradient(135deg, var(--primary) 0%, #f43f5e 100%);
  box-shadow: 0 8px 20px rgba(225, 29, 72, 0.25);
}

.feature-icon.gold {
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.25);
}

.feature-icon.blue {
  background: linear-gradient(135deg, #0ea5e9, #38bdf8);
  box-shadow: 0 8px 20px rgba(14, 165, 233, 0.25);
}

.feature-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.feature-text {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

@media (max-width: 992px) {
  .feature-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
}

/* =========================================================
   分类入口板块
   ========================================================= */
.category-section {
  background: var(--bg);
}

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

.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  transition: var(--transition);
  border: none;
}

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

.category-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.category-card:hover img {
  transform: scale(1.06);
}

.category-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(15, 23, 42, 0) 0%, rgba(15, 23, 42, 0.85) 100%);
  z-index: 1;
}

.category-content {
  position: relative;
  z-index: 2;
  padding: 40px 36px;
  color: var(--white);
}

.category-content .cat-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  font-size: 18px;
  margin-bottom: 16px;
}

.category-content h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
}

.category-content p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.7;
  margin-bottom: 16px;
}

.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--white);
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  padding-bottom: 4px;
  transition: var(--transition);
}

.category-link:hover {
  color: #fbbf24;
  border-bottom-color: #fbbf24;
}

@media (max-width: 768px) {
  .category-grid {
    grid-template-columns: 1fr;
  }

  .category-card {
    min-height: 340px;
  }
}

/* =========================================================
   最新资讯列表板块
   ========================================================= */
.news-section {
  background: var(--white);
}

.news-layout {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 56px;
  align-items: start;
}

.news-intro {
  position: sticky;
  top: 110px;
}

.news-intro .section-tag {
  margin-bottom: 14px;
}

.news-intro h2 {
  font-size: 34px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 14px;
}

.news-intro p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

.news-more-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-weight: 600;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.news-item {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--white);
  transition: var(--transition);
}

.news-item:hover {
  border-color: transparent;
  box-shadow: var(--shadow);
  transform: translateX(4px);
}

.news-index {
  font-size: 22px;
  font-weight: 800;
  color: var(--border);
  min-width: 40px;
  text-align: center;
  transition: var(--transition);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.news-item:hover .news-index {
  color: var(--primary);
}

.news-main {
  flex: 1;
  min-width: 0;
}

.news-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 4px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: var(--transition);
}

.news-item:hover .news-title {
  color: var(--primary);
}

.news-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.news-category {
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 20px;
}

.news-date {
  font-size: 13px;
  color: var(--text-muted);
  white-space: nowrap;
}

.news-empty {
  padding: 60px 24px;
  text-align: center;
  color: var(--text-muted);
  background: var(--bg);
  border-radius: var(--radius);
  font-size: 15px;
}

@media (max-width: 992px) {
  .news-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .news-intro {
    position: static;
  }
}

@media (max-width: 640px) {
  .news-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 18px;
  }

  .news-meta {
    width: 100%;
    justify-content: space-between;
  }
}

/* =========================================================
   内容生态展示（图文区块）
   ========================================================= */
.showcase-section {
  background: var(--bg);
}

.showcase-grid {
  display: flex;
  flex-direction: column;
  gap: 56px;
}

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

.showcase-item.reverse {
  direction: rtl;
}

.showcase-item.reverse > * {
  direction: ltr;
}

.showcase-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.showcase-media img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.showcase-media:hover img {
  transform: scale(1.04);
}

.showcase-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, rgba(225, 29, 72, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.showcase-flag {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  color: var(--dark);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 30px;
  box-shadow: var(--shadow-sm);
}

.showcase-content {
  padding: 20px 0;
}

.showcase-content .section-tag {
  margin-bottom: 14px;
}

.showcase-content h3 {
  font-size: 30px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.3;
  margin-bottom: 16px;
}

.showcase-content p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 24px;
}

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

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
}

.feature-list li i {
  color: var(--primary);
  font-size: 16px;
  line-height: 1.7;
}

@media (max-width: 992px) {
  .showcase-item {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .showcase-item.reverse {
    direction: ltr;
  }

  .showcase-content h3 {
    font-size: 25px;
  }

  .showcase-media img {
    min-height: 260px;
  }
}

/* =========================================================
   数据统计板块（深色）
   ========================================================= */
.stats-section {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.88) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: 88px 0;
  color: var(--white);
  text-align: center;
}

.stats-header {
  margin-bottom: 56px;
}

.stats-header .section-tag {
  background: rgba(225, 29, 72, 0.2);
  color: #fda4af;
  border: 1px solid rgba(225, 29, 72, 0.3);
}

.stats-header h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 12px;
}

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

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

.stat-item {
  padding: 32px 20px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
}

.stat-number {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #f43f5e, #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-suffix {
  font-size: 24px;
  font-weight: 700;
}

.stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 10px;
}

@media (max-width: 992px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   服务流程
   ========================================================= */
.process-section {
  background: var(--white);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  counter-reset: process;
}

.process-step {
  text-align: center;
  padding: 40px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--white);
  transition: var(--transition);
  position: relative;
}

.process-step:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.process-step::before {
  counter-increment: process;
  content: counter(process, decimal-leading-zero);
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  display: block;
  width: 44px;
  height: 44px;
  line-height: 44px;
  border-radius: 50%;
  margin: 0 auto 20px;
}

.process-icon {
  font-size: 26px;
  color: var(--primary);
  margin-bottom: 16px;
}

.process-step h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 10px;
}

.process-step p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

@media (max-width: 992px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================================
   FAQ 板块
   ========================================================= */
.faq-section {
  background: var(--bg);
}

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

.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: #cbd5e1;
}

.faq-item.active {
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--dark);
  transition: var(--transition);
}

.faq-question i {
  flex-shrink: 0;
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg);
}

.faq-item.active .faq-question {
  color: var(--primary);
}

.faq-item.active .faq-question i {
  transform: rotate(180deg);
  color: var(--primary);
  background: var(--primary-light);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-answer-inner {
  padding: 0 26px 22px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* =========================================================
   CTA 板块
   ========================================================= */
.cta-section {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(225, 29, 72, 0.75) 100%), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  padding: 80px 0;
  color: var(--white);
  text-align: center;
}

.cta-inner {
  max-width: 680px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.cta-inner p {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  line-height: 1.8;
}

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

@media (max-width: 768px) {
  .cta-inner h2 {
    font-size: 30px;
  }

  .cta-inner p {
    font-size: 15px;
  }
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 72px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

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

.footer-brand .brand-text {
  color: var(--white);
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

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

.footer-col ul li a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom-links {
  display: flex;
  gap: 24px;
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.5);
}

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

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: article */
:root {
  --primary: #c8102e;
  --primary-dark: #9e0d24;
  --primary-light: #fdeef0;
  --secondary: #1a1a2e;
  --accent: #d4a853;
  --bg: #f5f7fa;
  --card-bg: #ffffff;
  --text: #2d2d3a;
  --text-light: #7a7a8a;
  --border: #e5e7ed;
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
  --shadow: 0 8px 30px rgba(0,0,0,0.07);
  --shadow-lg: 0 18px 44px rgba(0,0,0,0.12);
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  padding: 0;
  margin: 0;
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
  color: var(--secondary);
}

p {
  margin: 0 0 1rem;
}

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

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.03);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 24px;
}

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

.brand-mark {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 1px;
  box-shadow: 0 4px 12px rgba(200, 16, 46, 0.25);
}

.brand-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--secondary);
  letter-spacing: 1px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  transition: var(--transition);
}

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

.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  width: 230px;
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.12);
}

.search-box i {
  color: var(--text-light);
  font-size: 14px;
}

.search-box input {
  border: none;
  outline: none;
  background: transparent;
  width: 100%;
  font-size: 14px;
  color: var(--text);
}

.search-box input::placeholder {
  color: #a0a0b0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  border-radius: 999px;
  padding: 12px 28px;
  font-size: 15px;
  transition: var(--transition);
  text-decoration: none;
}

.btn-sm {
  padding: 8px 20px;
  font-size: 14px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 14px rgba(200, 16, 46, 0.28);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200, 16, 46, 0.35);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--secondary);
  border: 1.5px solid var(--border);
}

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

.btn-lg {
  padding: 14px 34px;
  font-size: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  border-radius: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--secondary);
  border-radius: 4px;
  transition: var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ===== Hero / Banner ===== */
.page-banner {
  position: relative;
  padding: 80px 0 70px;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.92), rgba(200, 16, 46, 0.75)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(212, 168, 83, 0.2), transparent 60%);
  pointer-events: none;
}

.banner-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 24px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb i {
  font-size: 12px;
  opacity: 0.6;
}

.banner-title {
  font-size: 40px;
  line-height: 1.25;
  margin-bottom: 16px;
  color: #fff;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.25);
}

.banner-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.92);
  max-width: 640px;
  line-height: 1.7;
}

.banner-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 24px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

.banner-meta .meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ===== 主体 ===== */
.main-wrap {
  padding: 60px 0;
}

.grid-x {
  margin-left: -16px;
  margin-right: -16px;
}

.cell {
  padding-left: 16px;
  padding-right: 16px;
}

.article-main {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 40px 44px;
  border: 1px solid var(--border);
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 24px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
}

.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
}

.badge-gold {
  background: #fdf6e3;
  color: #a67c1e;
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-light);
}

.article-content {
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--text);
}

.article-content h2 {
  font-size: 24px;
  margin: 36px 0 16px;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
}

.article-content h3 {
  font-size: 20px;
  margin: 28px 0 12px;
}

.article-content p {
  margin-bottom: 18px;
}

.article-content ul {
  margin: 18px 0;
  padding: 0;
  list-style: none;
}

.article-content ul li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
}

.article-content ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.article-content blockquote {
  margin: 24px 0;
  padding: 20px 24px;
  border-left: 4px solid var(--accent);
  background: #fdfaf3;
  border-radius: 0 12px 12px 0;
  color: var(--text-light);
  font-style: normal;
}

.article-content img {
  border-radius: var(--radius);
  margin: 20px 0;
  box-shadow: var(--shadow-sm);
}

.article-content a {
  color: var(--primary);
  border-bottom: 1px solid transparent;
}

.article-content a:hover {
  border-bottom-color: var(--primary);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-light);
  transition: var(--transition);
}

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

/* ===== 侧边栏 ===== */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.sidebar-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  padding: 28px;
}

.sidebar-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 17px;
  margin-bottom: 18px;
}

.sidebar-title i {
  color: var(--primary);
}

.sidebar-list li {
  padding: 12px 0;
  border-bottom: 1px solid #f0f1f5;
}

.sidebar-list li:last-child {
  border-bottom: none;
}

.sidebar-list a {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.5;
}

.sidebar-list a:hover {
  color: var(--primary);
}

.sidebar-list .list-num {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
}

.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sidebar-tags a {
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-light);
  transition: var(--transition);
}

.sidebar-tags a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.sidebar-cta {
  background: linear-gradient(135deg, var(--secondary), #2d2d4a);
  color: #fff;
  text-align: center;
  padding: 30px 24px;
}

.sidebar-cta h4 {
  color: #fff;
  font-size: 19px;
  margin-bottom: 12px;
}

.sidebar-cta p {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 18px;
}

/* ===== 推荐阅读 ===== */
.section-block {
  padding: 70px 0;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 36px;
}

.section-header h2 {
  font-size: 30px;
}

.section-header h2 span {
  color: var(--primary);
}

.section-header .section-sub {
  color: var(--text-light);
  font-size: 15px;
}

.recommend-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.recommend-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.recommend-card:hover .card-img img {
  transform: scale(1.05);
}

.card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card-img .card-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(200, 16, 46, 0.9);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.recommend-body {
  padding: 24px;
}

.recommend-body h3 {
  font-size: 17px;
  margin-bottom: 10px;
  line-height: 1.45;
}

.recommend-body h3 a:hover {
  color: var(--primary);
}

.recommend-body p {
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 16px;
  line-height: 1.6;
}

.recommend-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-light);
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 14px;
}

.read-more i {
  transition: transform 0.3s ease;
}

.read-more:hover i {
  transform: translateX(4px);
}

/* ===== 数据亮点 ===== */
.stats-section {
  background: linear-gradient(135deg, var(--secondary), #273049);
  color: #fff;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(200, 16, 46, 0.2);
  top: -150px;
  right: -100px;
  pointer-events: none;
}

.stats-section::after {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(212, 168, 83, 0.12);
  bottom: -80px;
  left: -60px;
  pointer-events: none;
}

.stats-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-item {
  padding: 20px;
}

.stat-num {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
  line-height: 1.2;
}

.stat-num span {
  color: var(--accent);
}

.stat-label {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
}

/* ===== FAQ ===== */
.faq-grid {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
}

.faq-item:hover {
  box-shadow: var(--shadow);
}

.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 28px;
  font-weight: 600;
  font-size: 16px;
  color: var(--secondary);
}

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

.faq-item summary .faq-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 14px;
  transition: var(--transition);
}

.faq-item[open] summary .faq-icon {
  transform: rotate(180deg);
  background: var(--primary);
  color: #fff;
}

.faq-answer {
  padding: 0 28px 24px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.75;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.85), rgba(200, 16, 46, 0.65)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  color: #fff;
  text-align: center;
}

.cta-inner {
  max-width: 680px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 34px;
  color: #fff;
  margin-bottom: 14px;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 30px;
}

.cta-buttons {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

.cta-buttons .btn-light {
  background: #fff;
  color: var(--secondary);
}

.cta-buttons .btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

/* ===== 内容未找到 ===== */
.not-found-box {
  text-align: center;
  padding: 60px 20px;
}

.not-found-box i {
  font-size: 64px;
  color: var(--primary);
  opacity: 0.5;
  margin-bottom: 20px;
}

.not-found-box h2 {
  font-size: 30px;
  margin-bottom: 12px;
}

.not-found-box p {
  color: var(--text-light);
  margin-bottom: 28px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--secondary);
  color: rgba(255, 255, 255, 0.75);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .brand-logo {
  margin-bottom: 18px;
}

.footer-brand .brand-text {
  color: #fff;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}

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

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

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

.footer-col ul a:hover {
  color: var(--accent);
  padding-left: 4px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 22px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom-links {
  display: flex;
  gap: 18px;
}

.footer-bottom-links a {
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition);
}

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

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  .search-box {
    width: 170px;
  }

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

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

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

@media screen and (max-width: 768px) {
  .site-header .header-inner {
    height: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    right: 0;
    width: 260px;
    height: calc(100vh - 64px);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    background: #fff;
    border-left: 1px solid var(--border);
    box-shadow: -8px 0 30px rgba(0, 0, 0, 0.08);
    padding: 28px 24px;
    transform: translateX(100%);
    transition: transform 0.35s ease;
    z-index: 998;
  }

  .main-nav.open {
    transform: translateX(0);
  }

  .nav-link {
    font-size: 16px;
    padding: 12px 18px;
    width: 100%;
  }

  .header-actions .search-box {
    display: none;
  }

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

  .page-banner {
    padding: 50px 0 44px;
  }

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

  .banner-desc {
    font-size: 15px;
  }

  .main-wrap {
    padding: 40px 0;
  }

  .article-main {
    padding: 28px 24px;
    border-radius: var(--radius);
  }

  .article-content {
    font-size: 15.5px;
  }

  .article-content h2 {
    font-size: 21px;
  }

  .article-content h3 {
    font-size: 18px;
  }

  .section-block {
    padding: 50px 0;
  }

  .section-header h2 {
    font-size: 24px;
  }

  .cta-inner h2 {
    font-size: 26px;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media screen and (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .brand-text {
    font-size: 16px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 13px;
  }

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

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

  .stats-section {
    padding: 50px 0;
  }

  .stat-num {
    font-size: 34px;
  }

  .article-meta {
    gap: 10px;
  }

  .meta-item {
    font-size: 13px;
  }

  .faq-item summary {
    padding: 18px 20px;
    font-size: 15px;
  }

  .faq-answer {
    padding: 0 20px 20px;
  }

  .cta-buttons .btn {
    width: 100%;
  }
}

/* roulang page: category1 */
:root{
  --primary:#0A2540;
  --primary-light:#1A3A5C;
  --secondary:#0F4C81;
  --accent:#FF6B35;
  --accent-light:#FF8C5F;
  --bg:#F6F8FC;
  --white:#ffffff;
  --text:#1A1A2E;
  --muted:#6B7280;
  --border:#E5E7EB;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 8px 30px rgba(10,37,64,0.08);
  --shadow-lg:0 18px 48px rgba(10,37,64,0.14);
  --transition:all .3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block;border:0}
a{color:inherit;text-decoration:none;transition:var(--transition)}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit;border:none;outline:none;background:none}
.container{max-width:1280px;margin:0 auto;padding:0 24px;width:100%}
.container .row{max-width:none;width:100%}
.container .columns,.container .column{padding-left:16px;padding-right:16px}
body .row{margin-left:-16px;margin-right:-16px}
@media screen and (max-width:39.9375em){.container{padding:0 16px}}

/* Nav */
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);border-bottom:1px solid rgba(229,231,235,.7);transition:var(--transition)}
.site-header.scrolled{box-shadow:0 4px 24px rgba(10,37,64,.06)}
.header-inner{display:flex;align-items:center;gap:28px;height:72px}
.brand-logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;box-shadow:0 4px 12px rgba(10,37,64,.25)}
.brand-text{font-size:18px;font-weight:800;color:var(--primary);letter-spacing:.3px}
.main-nav{display:flex;align-items:center;gap:8px;flex:1;justify-content:center}
.nav-link{display:inline-flex;align-items:center;padding:8px 18px;border-radius:20px;font-size:14.5px;font-weight:600;color:var(--muted);transition:var(--transition);white-space:nowrap}
.nav-link:hover{color:var(--primary);background:rgba(10,37,64,.05)}
.nav-link.active{color:var(--primary);background:rgba(10,37,64,.08)}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:22px;padding:8px 16px;width:200px;transition:var(--transition)}
.search-box:focus-within{border-color:var(--secondary);box-shadow:0 0 0 3px rgba(15,76,129,.12);background:var(--white)}
.search-box i{color:var(--muted);font-size:13px}
.search-box input{width:100%;font-size:13px;background:transparent}
.search-box input::placeholder{color:#9CA3AF}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:22px;font-weight:600;font-size:14px;padding:10px 24px;cursor:pointer;transition:var(--transition);border:none;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%);color:#fff;box-shadow:0 4px 16px rgba(10,37,64,.2)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 8px 24px rgba(10,37,64,.3)}
.btn-primary:active{transform:translateY(1px)}
.btn-light{background:rgba(255,255,255,.15);color:#fff;border:1px solid rgba(255,255,255,.4);backdrop-filter:blur(8px)}
.btn-light:hover{background:rgba(255,255,255,.25);border-color:rgba(255,255,255,.6)}
.btn-outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:7px 18px;font-size:13px}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:42px;height:42px;border-radius:10px;background:var(--bg);border:1px solid var(--border);align-items:center;justify-content:center;cursor:pointer;transition:var(--transition)}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--primary);border-radius:2px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Page Hero */
.page-hero{position:relative;background-size:cover;background-position:center;padding:88px 0 72px;overflow:hidden}
.page-hero .hero-overlay{position:absolute;inset:0;background:linear-gradient(120deg,rgba(10,37,64,.92) 0%,rgba(15,76,129,.78) 55%,rgba(255,107,53,.35) 100%)}
.hero-content{position:relative;z-index:2;max-width:720px}
.hero-breadcrumb{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.75);background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:5px 16px;border-radius:20px;margin-bottom:22px;backdrop-filter:blur(6px)}
.hero-breadcrumb a{color:rgba(255,255,255,.85)}
.hero-breadcrumb a:hover{color:#fff}
.hero-title{font-size:40px;font-weight:800;color:#fff;letter-spacing:.5px;line-height:1.25;margin-bottom:16px}
.hero-desc{font-size:16px;color:rgba(255,255,255,.85);line-height:1.8;margin-bottom:28px;max-width:600px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,107,53,.2);border:1px solid rgba(255,107,53,.4);color:#FFD9C9;font-size:13px;padding:4px 12px;border-radius:14px;margin-left:16px}

/* Stats Section */
.stats-section{padding:48px 0;margin-top:-32px;position:relative;z-index:5}
.stats-wrap{background:var(--white);border-radius:20px;box-shadow:var(--shadow-lg);padding:36px 40px;border:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center;padding:16px 8px;border-right:1px solid var(--border)}
.stat-item:last-child{border-right:none}
.stat-number{font-size:36px;font-weight:800;color:var(--primary);line-height:1.2;background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:13px;color:var(--muted);margin-top:6px;font-weight:500}
.stat-icon{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:12px;background:rgba(10,37,64,.06);color:var(--primary);font-size:20px;margin-bottom:10px}

/* Sections */
.section-block{padding:72px 0}
.section-block-alt{background:var(--white);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-header{text-align:center;max-width:640px;margin:0 auto 48px}
.section-tag{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;color:var(--accent);background:rgba(255,107,53,.1);border:1px solid rgba(255,107,53,.2);padding:5px 16px;border-radius:20px;margin-bottom:14px;letter-spacing:.5px}
.section-title{font-size:30px;font-weight:800;color:var(--text);line-height:1.3;margin-bottom:12px;letter-spacing:.3px}
.section-title em{font-style:normal;background:linear-gradient(135deg,var(--accent),var(--accent-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.section-desc{font-size:15px;color:var(--muted);line-height:1.7}

/* Event Cards */
.events-grid .columns{display:flex;margin-bottom:16px}
.event-card{display:flex;flex-direction:column;background:var(--white);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition);width:100%;position:relative}
.event-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(15,76,129,.2)}
.event-image{position:relative;overflow:hidden;height:170px}
.event-image img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.event-card:hover .event-image img{transform:scale(1.06)}
.event-image::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(10,37,64,.25))}
.event-tag{position:absolute;top:14px;left:14px;z-index:3;background:rgba(255,107,53,.95);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:14px;backdrop-filter:blur(4px)}
.event-body{display:flex;flex-direction:column;flex:1;padding:20px 22px 22px}
.event-title{font-size:16px;font-weight:700;color:var(--text);line-height:1.45;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.event-desc{font-size:13.5px;color:var(--muted);line-height:1.65;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px}
.event-meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--muted);border-top:1px solid var(--border);padding-top:12px}
.event-meta span{display:flex;align-items:center;gap:6px}
.event-link{font-size:13px;font-weight:600;color:var(--secondary);display:inline-flex;align-items:center;gap:5px}
.event-link:hover{color:var(--accent);gap:9px}

/* News List */
.news-list-wrap{background:var(--white);border-radius:20px;border:1px solid var(--border);box-shadow:var(--shadow);padding:36px 40px}
.news-item{display:flex;gap:20px;padding:20px 0;border-bottom:1px solid var(--border);transition:var(--transition)}
.news-item:last-child{border-bottom:none}
.news-item:hover{background:rgba(15,76,129,.015)}
.news-time{flex-shrink:0;width:88px;text-align:center;background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:10px 6px;align-self:flex-start;transition:var(--transition)}
.news-time .t-month{font-size:13px;color:var(--accent);font-weight:700}
.news-time .t-day{font-size:24px;font-weight:800;color:var(--primary);line-height:1.1}
.news-time .t-hour{font-size:11px;color:var(--muted);margin-top:4px}
.news-content{flex:1}
.news-content h3{font-size:16.5px;font-weight:700;color:var(--text);margin-bottom:6px;line-height:1.5}
.news-content h3 a:hover{color:var(--secondary)}
.news-content p{font-size:14px;color:var(--muted);line-height:1.65}
.news-cat{display:inline-flex;align-items:center;font-size:12px;font-weight:600;color:var(--secondary);background:rgba(15,76,129,.06);padding:3px 10px;border-radius:12px;margin-bottom:8px}

/* Topic Cards */
.topic-card{position:relative;border-radius:var(--radius);overflow:hidden;height:300px;display:flex;align-items:flex-end;box-shadow:var(--shadow);transition:var(--transition);border:none}
.topic-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.topic-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.topic-card .topic-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,37,64,0) 25%,rgba(10,37,64,.85) 100%)}
.topic-content{position:relative;z-index:2;padding:28px;color:#fff}
.topic-content h3{font-size:20px;font-weight:700;margin-bottom:8px;line-height:1.4}
.topic-content p{font-size:14px;color:rgba(255,255,255,.8);line-height:1.6;margin-bottom:14px}
.topic-link{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:600;color:#fff;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);padding:7px 16px;border-radius:20px;backdrop-filter:blur(4px)}
.topic-link:hover{background:var(--accent);border-color:var(--accent)}

/* FAQ */
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);padding:22px 24px;margin-bottom:12px;transition:var(--transition)}
.faq-item:hover{border-color:rgba(15,76,129,.2);box-shadow:var(--shadow)}
.faq-q{font-size:15.5px;font-weight:700;color:var(--text);display:flex;justify-content:space-between;align-items:center;cursor:pointer}
.faq-q i{color:var(--accent);transition:var(--transition)}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease;color:var(--muted);font-size:14px;line-height:1.7}
.faq-item.open .faq-a{max-height:300px;margin-top:14px;padding-top:14px;border-top:1px solid var(--border)}

/* CTA */
.cta-section{padding:72px 0 80px}
.cta-panel{position:relative;border-radius:24px;padding:64px 48px;text-align:center;overflow:hidden;background:linear-gradient(135deg,var(--primary) 0%,var(--secondary) 100%)}
.cta-panel::before{content:'';position:absolute;top:-60px;right:-60px;width:240px;height:240px;border-radius:50%;background:rgba(255,107,53,.3);filter:blur(40px)}
.cta-panel::after{content:'';position:absolute;bottom:-80px;left:-40px;width:200px;height:200px;border-radius:50%;background:rgba(255,255,255,.08)}
.cta-inner{position:relative;z-index:2}
.cta-title{font-size:30px;font-weight:800;color:#fff;margin-bottom:14px}
.cta-desc{font-size:15px;color:rgba(255,255,255,.8);max-width:560px;margin:0 auto 28px;line-height:1.7}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

/* Footer */
.site-footer{background:var(--primary);color:rgba(255,255,255,.75);padding:56px 0 0;position:relative;overflow:hidden}
.site-footer::before{content:'';position:absolute;top:-80px;right:-80px;width:280px;height:280px;border-radius:50%;background:rgba(255,107,53,.1);filter:blur(60px)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1rd;grid-template-columns:1.5fr 1fr 1.2fr;gap:48px;padding-bottom:40px;position:relative;z-index:2}
.footer-brand p{font-size:14px;line-height:1.75;margin-top:16px;max-width:320px}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.6);transition:var(--transition);display:inline-flex;align-items:center;gap:6px}
.footer-col ul li a:hover{color:#fff;transform:translateX(4px)}
.footer-col ul li a i{font-size:11px;color:var(--accent)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:rgba(255,255,255,.5);position:relative;z-index:2;flex-wrap:wrap;gap:10px}
.footer-bottom-links{display:flex;gap:18px}
.footer-bottom-links a{color:rgba(255,255,255,.55);transition:var(--transition)}
.footer-bottom-links a:hover{color:#fff}

/* Focus & Accessibility */
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(255,107,53,.5);outline-offset:2px;border-radius:4px}

/* Responsive */
@media screen and (max-width:1024px){
  .main-nav{gap:4px}
  .nav-link{padding:8px 12px;font-size:13.5px}
  .search-box{width:160px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .stat-item{border-right:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media screen and (max-width:768px){
  .header-inner{height:64px;position:relative}
  .main-nav{position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;gap:10px;box-shadow:0 16px 40px rgba(10,37,64,.12);z-index:998;display:none}
  .main-nav.open{display:flex}
  .nav-link{width:100%;justify-content:flex-start;border-radius:10px;padding:12px 16px}
  .header-actions{margin-left:auto}
  .search-box{display:none}
  .nav-toggle{display:flex;margin-left:8px}
  .page-hero{padding:64px 0 56px}
  .hero-title{font-size:28px}
  .hero-desc{font-size:14px}
  .hero-actions .btn{padding:9px 18px;font-size:13px}
  .section-block{padding:48px 0}
  .section-title{font-size:24px}
  .stats-wrap{padding:24px 20px}
  .stat-number{font-size:28px}
  .news-list-wrap{padding:24px 20px}
  .news-item{flex-direction:column;gap:10px}
  .news-time{display:flex;align-items:center;gap:8px;justify-content:center;width:100%;text-align:left}
  .news-time .t-month{margin-right:4px}
  .news-time .t-hour{margin-left:8px}
  .topic-card{height:220px}
  .cta-panel{padding:40px 24px}
  .cta-title{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:28px}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media screen and (max-width:520px){
  .container{padding:0 14px}
  .brand-text{font-size:15px}
  .brand-mark{width:32px;height:32px;font-size:13px}
  .header-actions .btn-sm{display:none}
  .page-hero{padding:48px 0 44px}
  .hero-title{font-size:23px}
  .hero-desc{font-size:13px}
  .hero-breadcrumb{font-size:12px;padding:4px 12px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .stat-item{padding:12px 4px}
  .stat-number{font-size:24px}
  .section-title{font-size:21px}
  .events-grid .columns{padding-left:8px;padding-right:8px}
  .cta-title{font-size:20px}
  .cta-desc{font-size:13px}
}

/* roulang page: category2 */
:root {
            --primary: #1e3a5f;
            --primary-light: #2d5a8e;
            --accent: #e63946;
            --accent-hover: #d62f3c;
            --bg: #f5f7fb;
            --bg-light: #ffffff;
            --bg-dark: #132a3f;
            --text: #1a1a2e;
            --text-light: #6b7a8c;
            --border: #e5e9f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 6px 30px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 12px 36px rgba(0, 0, 0, 0.1);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: inline-block;
            vertical-align: middle;
        }
        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ── Header / Navigation ── */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 999;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-mark {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 800;
            font-size: 16px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            letter-spacing: -0.5px;
            box-shadow: 0 4px 14px rgba(30, 58, 95, 0.25);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 16px;
        }
        .nav-link {
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(30, 58, 95, 0.06);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 18px;
            right: 18px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: auto;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border-radius: 999px;
            padding: 8px 16px;
            border: 1px solid var(--border);
            transition: var(--transition);
            width: 220px;
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(30, 58, 95, 0.1);
            background: #fff;
        }
        .search-box i {
            color: var(--text-light);
            font-size: 14px;
        }
        .search-box input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            width: 100%;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            border-radius: 12px;
            padding: 12px 28px;
            font-size: 15px;
            line-height: 1;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
            border-radius: 10px;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 4px 18px rgba(30, 58, 95, 0.25);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(30, 58, 95, 0.35);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 4px;
            background: var(--bg);
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
        }

        /* ── Page Hero ── */
        .page-hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, rgba(19, 42, 63, 0.92), rgba(30, 58, 95, 0.85)),
                url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--bg), transparent);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            border-radius: 999px;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 500;
            margin-bottom: 24px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            color: #ffd166;
        }
        .page-hero h1 {
            font-size: clamp(34px, 5vw, 56px);
            font-weight: 800;
            line-height: 1.15;
            margin: 0 0 20px;
            letter-spacing: -1px;
        }
        .page-hero p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            max-width: 660px;
            margin: 0 0 36px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-meta {
            display: flex;
            gap: 32px;
            margin-top: 48px;
            flex-wrap: wrap;
        }
        .hero-meta-item {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .hero-meta-item i {
            font-size: 24px;
            color: #ffd166;
        }
        .hero-meta-item span {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        /* ── Section common ── */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 60px;
        }
        .section-header h2 {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 800;
            color: var(--text);
            margin: 0 0 16px;
            letter-spacing: -0.5px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.7;
            margin: 0;
        }
        .section-header .section-tag {
            display: inline-block;
            background: rgba(230, 57, 70, 0.08);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            border-radius: 999px;
            padding: 6px 18px;
            margin-bottom: 16px;
        }

        /* ── Category Grid ── */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 20px;
        }
        .category-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .category-icon {
            width: 76px;
            height: 76px;
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
            margin: 0 auto 20px;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            box-shadow: 0 6px 20px rgba(30, 58, 95, 0.2);
        }
        .category-card:nth-child(2) .category-icon {
            background: linear-gradient(135deg, #e76f51, #e63946);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.2);
        }
        .category-card:nth-child(3) .category-icon {
            background: linear-gradient(135deg, #2a9d8f, #1e6f66);
            box-shadow: 0 6px 20px rgba(42, 157, 143, 0.2);
        }
        .category-card:nth-child(4) .category-icon {
            background: linear-gradient(135deg, #f4a261, #e76f51);
            box-shadow: 0 6px 20px rgba(244, 162, 97, 0.2);
        }
        .category-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 10px;
        }
        .category-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.6;
            margin: 0 0 18px;
        }
        .category-card .category-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .category-card .category-link i {
            font-size: 12px;
            transition: transform 0.2s;
        }
        .category-card .category-link:hover i {
            transform: translateX(4px);
        }

        /* ── Content Cards (百科文章) ── */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .content-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .content-cover {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
            overflow: hidden;
        }
        .content-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        .content-card:hover .content-cover img {
            transform: scale(1.05);
        }
        .content-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(4px);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
            padding: 4px 14px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        .content-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .content-meta {
            display: flex;
            gap: 16px;
            align-items: center;
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .content-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .content-meta i {
            font-size: 12px;
            color: var(--accent);
        }
        .content-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin: 0 0 10px;
        }
        .content-body h3 a {
            color: var(--text);
        }
        .content-body h3 a:hover {
            color: var(--primary);
        }
        .content-body p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.65;
            margin: 0 0 18px;
            flex: 1;
        }
        .content-body .btn-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s;
        }
        .content-body .btn-link:hover {
            gap: 10px;
            color: var(--accent);
        }

        /* ── Learning Path / Flow ── */
        .path-section {
            background: var(--bg-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .path-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.03);
        }
        .path-section .section-header h2 {
            color: #fff;
        }
        .path-section .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }
        .path-steps {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 20px;
        }
        .path-step {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .path-step:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-4px);
        }
        .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #ff6b6b);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }
        .path-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 12px;
            color: #fff;
        }
        .path-step p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.75);
            margin: 0;
        }

        /* ── Stats / Data Block ── */
        .stats-block {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 48px;
            box-shadow: var(--shadow);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 20px;
        }
        .stat-item .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .stat-item .stat-label {
            font-size: 15px;
            color: var(--text-light);
            font-weight: 500;
        }

        /* ── FAQ ── */
        .faq-section {
            background: #fff;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition);
            background: #fff;
        }
        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 22px 28px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            list-style: none;
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary i {
            font-size: 14px;
            color: var(--text-light);
            transition: transform 0.3s;
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item[open] summary i {
            transform: rotate(180deg);
            color: var(--accent);
        }
        .faq-item[open] {
            border-color: rgba(230, 57, 70, 0.3);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.06);
        }
        .faq-item .faq-answer {
            padding: 0 28px 22px;
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.75;
        }

        /* ── CTA ── */
        .cta-section {
            padding: 60px 0;
        }
        .cta-box {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 24px;
            padding: 60px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }
        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin: 0 0 16px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 520px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn-white {
            background: #fff;
            color: var(--primary);
            padding: 14px 36px;
            font-weight: 700;
            border-radius: 12px;
            font-size: 15px;
            transition: var(--transition);
            display: inline-block;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            color: var(--primary);
        }
        .cta-box .btn-outline {
            margin-left: 12px;
        }

        /* ── Footer ── */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding: 70px 0 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            margin-bottom: 48px;
        }
        .footer-brand .brand-logo {
            margin-bottom: 18px;
        }
        .footer-brand .brand-text {
            color: #fff;
        }
        .footer-brand p {
            font-size: 15px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 20px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 12px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
            padding-left: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.5);
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom-links {
            display: flex;
            gap: 24px;
        }
        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-bottom-links a:hover {
            color: #fff;
        }

        /* ── Responsive ── */
        @media (max-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .main-nav {
                margin: 0 8px;
            }
            .header-actions .search-box {
                width: 160px;
            }
        }
        @media (max-width: 768px) {
            .site-header {
                height: 64px;
            }
            .header-inner {
                height: 64px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
                margin: 0;
                z-index: 99;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions .search-box {
                display: none;
            }
            .header-actions .btn {
                display: none;
            }
            .page-hero {
                padding: 64px 0 48px;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .path-steps {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .section {
                padding: 60px 0;
            }
            .stats-block {
                padding: 30px 20px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-mark {
                width: 34px;
                height: 34px;
                font-size: 14px;
                border-radius: 10px;
            }
            .hero-meta {
                gap: 16px;
                flex-direction: column;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }