/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0f1b2d;
  --primary-light: #1a2d4a;
  --primary-mid: #233a5e;
  --accent: #c9a84c;
  --accent-light: #e0c66a;
  --accent-dark: #b08d30;
  --bg: #f8f7f4;
  --bg-alt: #f0efe9;
  --bg-dark: #0a1422;
  --card-bg: #ffffff;
  --text: #1a1a2e;
  --text-rev: #f9f8f6;
  --text-weak: #6b7280;
  --text-mute: #9ca3af;
  --border: #e5e7eb;
  --border-light: #f0efeb;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 18px;
  --shadow: 0 4px 24px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 40px rgba(0,0,0,0.12);
  --shadow-heavy: 0 12px 48px rgba(0,0,0,0.18);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --max-w: 1280px;
  --nav-h: 72px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  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: color var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: 1rem; outline: none; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary); }
h1 { font-size: 2.8rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.15rem; }
p { margin-bottom: 0.8rem; color: var(--text); }
/* focus-visible */
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ===== 容器 ===== */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
@media (max-width: 768px) {
  .container { padding: 0 16px; }
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(15,27,45,0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(201,168,76,0.15);
  z-index: 1000;
  transition: background var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  background: rgba(15,27,45,0.99);
  box-shadow: 0 2px 32px rgba(0,0,0,0.3);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
/* Logo */
.logo-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--primary);
  box-shadow: 0 2px 12px rgba(201,168,76,0.3);
}
.logo-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-rev);
  letter-spacing: 0.5px;
}
.logo-text span { color: var(--accent); }
/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-links a {
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: rgba(249,248,246,0.8);
  transition: all var(--transition);
  position: relative;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text-rev);
  background: rgba(201,168,76,0.12);
}
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 2px; left: 50%;
  transform: translateX(-50%);
  width: 20px; height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
/* 右侧操作区 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-box {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 24px;
  padding: 0 16px;
  transition: all var(--transition);
}
.search-box:focus-within {
  background: rgba(255,255,255,0.14);
  border-color: var(--accent);
}
.search-box input {
  background: none;
  border: none;
  padding: 8px 10px;
  color: var(--text-rev);
  font-size: 0.9rem;
  width: 140px;
  transition: width var(--transition);
}
.search-box input::placeholder { color: rgba(249,248,246,0.4); }
.search-box input:focus { width: 180px; }
.search-box button {
  color: rgba(249,248,246,0.5);
  font-size: 1rem;
  padding: 4px 0 4px 8px;
  transition: color var(--transition);
}
.search-box button:hover { color: var(--accent); }
.btn-nav {
  padding: 8px 22px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all var(--transition);
  white-space: nowrap;
}
.btn-nav-outline {
  border: 1px solid rgba(201,168,76,0.4);
  color: var(--accent);
  background: transparent;
}
.btn-nav-outline:hover {
  background: rgba(201,168,76,0.12);
  border-color: var(--accent);
}
.btn-nav-solid {
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(201,168,76,0.25);
}
.btn-nav-solid:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 24px rgba(201,168,76,0.35);
  color: var(--primary);
}
/* 移动端汉堡 */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 6px;
  background: none;
  border: none;
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 26px; height: 2.5px;
  background: var(--text-rev);
  border-radius: 2px;
  transition: all var(--transition);
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 1024px) {
  .search-box input { width: 100px; }
  .search-box input:focus { width: 130px; }
  .nav-links a { padding: 8px 14px; font-size: 0.9rem; }
}
@media (max-width: 820px) {
  .hamburger { display: flex; }
  .nav-links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    background: rgba(15,27,45,0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 20px 24px;
    gap: 4px;
    transform: translateY(-110%);
    opacity: 0;
    transition: all var(--transition);
    border-bottom: 1px solid rgba(201,168,76,0.1);
    pointer-events: none;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  .nav-links a { padding: 14px 18px; font-size: 1rem; width: 100%; }
  .nav-links a.active::after { display: none; }
  .nav-links a.active { background: rgba(201,168,76,0.15); border-radius: var(--radius-sm); }
  .header-actions .search-box { display: none; }
  .header-actions .btn-nav { padding: 8px 16px; font-size: 0.85rem; }
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
  background: var(--bg-dark);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  opacity: 0.45;
  transform: scale(1.02);
  transition: transform 0.6s ease;
}
.hero:hover .hero-bg { transform: scale(1.0); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15,27,45,0.88) 0%, rgba(15,27,45,0.55) 60%, rgba(15,27,45,0.7) 100%);
}
.hero .container { position: relative; z-index: 2; width: 100%; }
.hero-content { max-width: 720px; padding: 60px 0; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201,168,76,0.15);
  border: 1px solid rgba(201,168,76,0.25);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  color: var(--accent-light);
  margin-bottom: 28px;
  letter-spacing: 0.3px;
}
.hero-badge i { font-size: 0.75rem; }
.hero h1 {
  font-size: 3.2rem;
  color: var(--text-rev);
  margin-bottom: 20px;
  line-height: 1.2;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 1.15rem;
  color: rgba(249,248,246,0.75);
  max-width: 580px;
  margin-bottom: 36px;
  line-height: 1.8;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-actions .btn-primary {
  padding: 16px 40px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 1.05rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary);
  box-shadow: 0 6px 28px rgba(201,168,76,0.3);
  transition: all var(--transition);
}
.hero-actions .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(201,168,76,0.4);
}
.hero-actions .btn-secondary {
  padding: 16px 36px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--text-rev);
  transition: all var(--transition);
}
.hero-actions .btn-secondary:hover {
  background: rgba(255,255,255,0.14);
  border-color: rgba(201,168,76,0.3);
  color: var(--accent-light);
}
.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 50px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,0.08);
}
.hero-stats .stat-item { text-align: left; }
.hero-stats .stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}
.hero-stats .stat-label {
  font-size: 0.9rem;
  color: rgba(249,248,246,0.5);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .hero { min-height: 70vh; }
  .hero h1 { font-size: 2rem; }
  .hero p { font-size: 1rem; }
  .hero-content { padding: 40px 0; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .hero-stats .stat-num { font-size: 1.6rem; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.7rem; }
  .hero-actions .btn-primary,
  .hero-actions .btn-secondary { padding: 14px 28px; font-size: 0.95rem; width: 100%; text-align: center; }
}

/* ===== 通用板块 ===== */
.section {
  padding: 80px 0;
}
.section-alt { background: var(--bg-alt); }
.section-dark {
  background: var(--bg-dark);
  color: var(--text-rev);
}
.section-dark h2,
.section-dark h3 { color: var(--text-rev); }
.section-dark p { color: rgba(249,248,246,0.75); }
.section-header {
  text-align: center;
  margin-bottom: 52px;
}
.section-header h2 { margin-bottom: 12px; }
.section-header p {
  font-size: 1.05rem;
  color: var(--text-weak);
  max-width: 600px;
  margin: 0 auto;
}
.section-tag {
  display: inline-block;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-dark);
  background: rgba(201,168,76,0.12);
  margin-bottom: 12px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .section-header { margin-bottom: 36px; }
  .section-header h2 { font-size: 1.6rem; }
}

/* ===== 卡片网格 ===== */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 28px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; gap: 20px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .grid-3 { grid-template-columns: 1fr; }
}

/* ===== 卡片 ===== */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: all var(--transition);
  border: 1px solid var(--border-light);
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(201,168,76,0.15);
}
.card-img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  display: block;
}
.card-body { padding: 24px; }
.card-body h3 { margin-bottom: 8px; font-size: 1.2rem; }
.card-body p { font-size: 0.95rem; color: var(--text-weak); margin-bottom: 12px; }
.card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.85rem;
  color: var(--text-mute);
  margin-bottom: 12px;
}
.card-meta span { display: flex; align-items: center; gap: 4px; }
.card-tag {
  display: inline-block;
  padding: 2px 12px;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(201,168,76,0.1);
  color: var(--accent-dark);
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
  transition: all var(--transition);
}
.card-link:hover { color: var(--accent); gap: 10px; }

/* ===== 特色介绍卡片 ===== */
.feature-card {
  text-align: center;
  padding: 40px 28px;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.feature-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  color: var(--accent-dark);
  background: rgba(201,168,76,0.1);
}
.feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.feature-card p { font-size: 0.95rem; color: var(--text-weak); }

/* ===== 分类入口 ===== */
.category-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16/9;
  display: flex;
  align-items: flex-end;
  cursor: pointer;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  border: 1px solid var(--border-light);
}
.category-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.category-card img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.category-card:hover img { transform: scale(1.05); }
.category-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15,27,45,0.85) 0%, rgba(15,27,45,0.2) 100%);
}
.category-card .cat-content {
  position: relative;
  z-index: 2;
  padding: 28px 24px;
  width: 100%;
}
.category-card .cat-content h3 {
  color: var(--text-rev);
  font-size: 1.3rem;
  margin-bottom: 4px;
}
.category-card .cat-content p {
  color: rgba(249,248,246,0.7);
  font-size: 0.9rem;
}

/* ===== 步骤/流程 ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-item {
  text-align: center;
  padding: 32px 20px;
  position: relative;
}
.step-num {
  width: 48px; height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary);
  font-weight: 800;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 4px 20px rgba(201,168,76,0.25);
}
.step-item h4 { margin-bottom: 8px; font-size: 1.05rem; }
.step-item p { font-size: 0.9rem; color: var(--text-weak); margin-bottom: 0; }
@media (max-width: 768px) {
  .steps { grid-template-columns: repeat(2, 1fr); gap: 16px; }
}
@media (max-width: 520px) {
  .steps { grid-template-columns: 1fr; }
}

/* ===== 数据统计 ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.stat-card {
  text-align: center;
  padding: 36px 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.stat-card:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(201,168,76,0.15);
}
.stat-card .num {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 6px;
}
.stat-card .label {
  font-size: 0.95rem;
  color: rgba(249,248,246,0.6);
}
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .stat-card .num { font-size: 2rem; }
}
@media (max-width: 520px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== FAQ ===== */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}
.faq-item:last-child { border-bottom: none; }
.faq-q {
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--primary);
  padding: 4px 0;
  user-select: none;
}
.faq-q i { transition: transform var(--transition); color: var(--accent); font-size: 0.9rem; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 20px 0 0;
  color: var(--text-weak);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding-top: 14px;
}

/* ===== CTA ===== */
.cta-block {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg);
  padding: 60px 48px;
  text-align: center;
  box-shadow: var(--shadow-heavy);
  position: relative;
  overflow: hidden;
}
.cta-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.08;
}
.cta-block h2 { color: var(--text-rev); font-size: 2rem; margin-bottom: 12px; position: relative; }
.cta-block p { color: rgba(249,248,246,0.7); max-width: 540px; margin: 0 auto 32px; font-size: 1.05rem; position: relative; }
.cta-block .btn-cta {
  display: inline-block;
  padding: 18px 52px;
  border-radius: 30px;
  font-weight: 700;
  font-size: 1.1rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-light));
  color: var(--primary);
  box-shadow: 0 6px 28px rgba(201,168,76,0.3);
  transition: all var(--transition);
  position: relative;
}
.cta-block .btn-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(201,168,76,0.4);
}
@media (max-width: 768px) {
  .cta-block { padding: 40px 24px; }
  .cta-block h2 { font-size: 1.5rem; }
  .cta-block .btn-cta { padding: 14px 36px; font-size: 1rem; }
}

/* ===== 最新资讯列表 ===== */
.news-list { display: flex; flex-direction: column; gap: 16px; }
.news-item {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 20px 24px;
  background: var(--card-bg);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  border: 1px solid var(--border-light);
  transition: all var(--transition);
}
.news-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(201,168,76,0.15);
}
.news-item .thumb {
  width: 120px; height: 80px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg-alt);
}
.news-item .info { flex: 1; }
.news-item .info h4 { font-size: 1.05rem; margin-bottom: 6px; transition: color var(--transition); }
.news-item:hover .info h4 { color: var(--accent); }
.news-item .info p { font-size: 0.9rem; color: var(--text-weak); margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-item .meta { display: flex; gap: 16px; font-size: 0.8rem; color: var(--text-mute); }
.news-item .meta .tag { color: var(--accent-dark); font-weight: 600; }
@media (max-width: 640px) {
  .news-item { flex-direction: column; gap: 12px; padding: 16px; }
  .news-item .thumb { width: 100%; height: 160px; }
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary);
  color: rgba(249,248,246,0.7);
  padding: 60px 0 32px;
  border-top: 1px solid rgba(201,168,76,0.08);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .logo-text { font-size: 1.3rem; margin-bottom: 12px; display: block; }
.footer-brand p { font-size: 0.9rem; color: rgba(249,248,246,0.5); max-width: 320px; line-height: 1.7; }
.footer-col h4 { color: var(--text-rev); font-size: 1rem; margin-bottom: 16px; font-weight: 600; }
.footer-col a {
  display: block;
  padding: 4px 0;
  font-size: 0.9rem;
  color: rgba(249,248,246,0.55);
  transition: all var(--transition);
}
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: rgba(249,248,246,0.35);
}
.footer-bottom a { color: rgba(249,248,246,0.4); }
.footer-bottom a:hover { color: var(--accent); }

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--text-weak);
  font-size: 1rem;
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px dashed var(--border);
}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #1a3a5c;
            --primary-light: #2a5a8c;
            --primary-dark: #0f2440;
            --secondary: #e8a838;
            --secondary-light: #f0c060;
            --secondary-dark: #c88820;
            --accent: #c0392b;
            --bg: #f5f7fa;
            --bg-card: #ffffff;
            --bg-dark: #0f2440;
            --bg-gray: #eef1f5;
            --text: #1a2a3a;
            --text-light: #5a6a7a;
            --text-white: #f0f4f8;
            --border: #d0d8e0;
            --border-light: #e4e8ee;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --nav-height: 72px;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }
        body {
            font-family: var(--font);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text);
            background: var(--bg);
        }
        a {
            color: var(--primary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: 1rem;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
            background: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--primary-dark);
        }
        h1 {
            font-size: 2.6rem;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.4rem;
        }
        h4 {
            font-size: 1.1rem;
        }
        p {
            color: var(--text-light);
            margin-bottom: 1rem;
        }
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26, 58, 92, 0.25);
        }
        .logo-text {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--primary-dark);
            letter-spacing: -0.5px;
        }
        .logo-text span {
            color: var(--secondary);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            color: var(--text-light);
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--primary);
            background: rgba(26, 58, 92, 0.06);
        }
        .nav-links a.active {
            color: #fff;
            background: var(--primary);
            box-shadow: 0 2px 12px rgba(26, 58, 92, 0.25);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg-gray);
            border-radius: var(--radius-sm);
            padding: 0 14px;
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(26, 58, 92, 0.1);
        }
        .search-box input {
            background: transparent;
            padding: 8px 6px;
            width: 160px;
            color: var(--text);
            font-size: 0.9rem;
        }
        .search-box input::placeholder {
            color: var(--text-light);
        }
        .search-box i {
            color: var(--text-light);
            font-size: 0.9rem;
        }
        .btn-header {
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            background: var(--secondary);
            color: var(--primary-dark);
            box-shadow: 0 2px 8px rgba(232, 168, 56, 0.3);
        }
        .btn-header:hover {
            background: var(--secondary-light);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(232, 168, 56, 0.4);
            color: var(--primary-dark);
        }
        .menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--primary-dark);
            padding: 4px 8px;
            border-radius: 6px;
            background: var(--bg-gray);
        }

        /* ===== Hero / Banner ===== */
        .page-banner {
            position: relative;
            padding: 80px 0 72px;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            overflow: hidden;
            min-height: 320px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.15;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(232, 168, 56, 0.12) 0%, transparent 60%);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            color: var(--text-white);
            font-size: 3rem;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .page-banner h1 i {
            color: var(--secondary);
            margin-right: 12px;
        }
        .page-banner p {
            color: rgba(240, 244, 248, 0.85);
            font-size: 1.15rem;
            max-width: 680px;
            margin: 0 auto 24px;
        }
        .banner-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .banner-tags .tag {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(4px);
            color: var(--text-white);
            padding: 6px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.15);
            transition: var(--transition);
        }
        .banner-tags .tag:hover {
            background: rgba(255, 255, 255, 0.22);
            transform: translateY(-1px);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-bar {
            background: var(--bg-card);
            border-bottom: 1px solid var(--border-light);
            padding: 12px 0;
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-light);
        }
        .breadcrumb-bar a {
            color: var(--primary-light);
        }
        .breadcrumb-bar a:hover {
            color: var(--primary);
        }
        .breadcrumb-bar i {
            font-size: 0.7rem;
            color: var(--border);
        }
        .breadcrumb-bar .current {
            color: var(--text);
            font-weight: 500;
        }

        /* ===== Section Shared ===== */
        .section {
            padding: 72px 0;
        }
        .section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-title h2 {
            margin-bottom: 12px;
            position: relative;
            display: inline-block;
        }
        .section-title h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--secondary);
            border-radius: 4px;
            margin: 12px auto 0;
        }
        .section-title p {
            max-width: 560px;
            margin: 0 auto;
            font-size: 1.05rem;
        }
        .section-bg-gray {
            background: var(--bg-gray);
        }
        .section-bg-white {
            background: var(--bg-card);
        }
        .section-bg-dark {
            background: var(--bg-dark);
        }
        .section-bg-dark .section-title h2 {
            color: var(--text-white);
        }
        .section-bg-dark .section-title h2::after {
            background: var(--secondary);
        }
        .section-bg-dark .section-title p {
            color: rgba(240, 244, 248, 0.7);
        }

        /* ===== Card ===== */
        .card {
            background: var(--bg-card);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--border-light);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 24px;
        }
        .card-body h3 {
            margin-bottom: 8px;
            font-size: 1.2rem;
        }
        .card-body p {
            font-size: 0.95rem;
            margin-bottom: 12px;
        }
        .card-body .meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .card-body .meta i {
            margin-right: 4px;
        }
        .card-tag {
            display: inline-block;
            padding: 2px 12px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--bg-gray);
            color: var(--primary-light);
            margin-right: 6px;
        }
        .card-tag.hot {
            background: #fef0e6;
            color: var(--accent);
        }
        .card-tag.new {
            background: #e6f7ee;
            color: #1a7a4a;
        }

        /* ===== Grid ===== */
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr 1fr;
            gap: 24px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(26, 58, 92, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(26, 58, 92, 0.35);
            color: #fff;
        }
        .btn-secondary {
            background: var(--secondary);
            color: var(--primary-dark);
            box-shadow: 0 4px 16px rgba(232, 168, 56, 0.25);
        }
        .btn-secondary:hover {
            background: var(--secondary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(232, 168, 56, 0.35);
            color: var(--primary-dark);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        .btn-outline:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 0.85rem;
        }

        /* ===== Badge ===== */
        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 30px;
            font-size: 0.75rem;
            font-weight: 600;
            background: var(--bg-gray);
            color: var(--text-light);
        }
        .badge-primary {
            background: var(--primary);
            color: #fff;
        }
        .badge-secondary {
            background: var(--secondary);
            color: var(--primary-dark);
        }
        .badge-hot {
            background: #fef0e6;
            color: var(--accent);
        }

        /* ===== List ===== */
        .list-styled {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .list-styled li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 16px;
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .list-styled li:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .list-styled li i {
            color: var(--secondary);
            font-size: 1.1rem;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .list-styled li .list-content h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }
        .list-styled li .list-content p {
            font-size: 0.9rem;
            margin: 0;
        }

        /* ===== Stats ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }
        .stat-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow);
        }
        .stat-item .num {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-item .num span {
            color: var(--secondary);
        }
        .stat-item .label {
            font-size: 0.95rem;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
        }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-weight: 600;
            font-size: 1rem;
            color: var(--primary-dark);
            cursor: pointer;
            background: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--secondary);
            transition: var(--transition);
            font-size: 0.9rem;
        }
        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.95rem;
            color: var(--text-light);
            line-height: 1.7;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .cta-section h2 {
            color: var(--text-white);
            font-size: 2.2rem;
            margin-bottom: 16px;
        }
        .cta-section p {
            color: rgba(240, 244, 248, 0.8);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 32px;
        }
        .cta-section .btn {
            font-size: 1.05rem;
            padding: 14px 40px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(240, 244, 248, 0.7);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo-text {
            color: var(--text-white);
            font-size: 1.4rem;
            display: block;
            margin-bottom: 12px;
        }
        .footer-brand .logo-text span {
            color: var(--secondary);
        }
        .footer-brand p {
            color: rgba(240, 244, 248, 0.6);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h4 {
            color: var(--text-white);
            font-size: 1rem;
            margin-bottom: 16px;
            font-weight: 700;
        }
        .footer-col a {
            display: block;
            color: rgba(240, 244, 248, 0.55);
            font-size: 0.9rem;
            padding: 4px 0;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--secondary);
            padding-left: 4px;
        }
        .footer-bottom {
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: rgba(240, 244, 248, 0.4);
            flex-wrap: wrap;
            gap: 8px;
        }
        .footer-bottom a {
            color: var(--secondary);
        }
        .footer-bottom a:hover {
            color: var(--secondary-light);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 64px;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.6rem;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
            .page-banner {
                padding: 56px 0 48px;
                min-height: 240px;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--bg-card);
                flex-direction: column;
                padding: 16px 24px;
                border-bottom: 1px solid var(--border-light);
                box-shadow: var(--shadow-lg);
                gap: 4px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                width: 100%;
                border-radius: var(--radius-sm);
            }
            .nav-links a.active {
                background: var(--primary);
                color: #fff;
            }
            .menu-toggle {
                display: block;
            }
            .search-box input {
                width: 120px;
            }
            .grid-2,
            .grid-3,
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-item .num {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                margin-bottom: 32px;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .btn-header {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .header-right .btn-header span {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner h1 {
                font-size: 1.7rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-item {
                padding: 20px 12px;
            }
            .stat-item .num {
                font-size: 1.7rem;
            }
            .search-box input {
                width: 80px;
            }
            .banner-tags .tag {
                font-size: 0.75rem;
                padding: 4px 12px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        /* ===== Additional Utilities ===== */
        .text-center {
            text-align: center;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-wrap {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .op-08 {
            opacity: 0.8;
        }
        .img-round {
            border-radius: var(--radius-sm);
        }

        /* ===== Sport Category Cards (specific) ===== */
        .sport-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .sport-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-light);
            padding: 28px 20px 24px;
            text-align: center;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .sport-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .sport-card .icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            background: var(--bg-gray);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: var(--primary);
            transition: var(--transition);
        }
        .sport-card:hover .icon {
            background: var(--primary);
            color: #fff;
        }
        .sport-card h3 {
            font-size: 1.15rem;
            margin-bottom: 6px;
        }
        .sport-card p {
            font-size: 0.85rem;
            margin: 0;
        }
        .sport-card .badge {
            margin-top: 12px;
        }

        @media (max-width: 1024px) {
            .sport-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 520px) {
            .sport-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .sport-card {
                padding: 20px 12px;
            }
            .sport-card .icon {
                width: 48px;
                height: 48px;
                font-size: 1.4rem;
            }
        }

        /* ===== Timeline / Process ===== */
        .timeline {
            position: relative;
            padding-left: 32px;
            max-width: 700px;
            margin: 0 auto;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 10px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--border-light);
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            padding: 0 0 32px 32px;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -22px;
            top: 4px;
            width: 16px;
            height: 16px;
            background: var(--secondary);
            border-radius: 50%;
            border: 3px solid var(--bg-card);
            box-shadow: 0 0 0 3px var(--secondary-light);
        }
        .timeline-item h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }
        .timeline-item p {
            font-size: 0.9rem;
            margin: 0;
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #0f1b33;
        --primary-light: #1a3a5c;
        --primary-dark: #091224;
        --accent: #e85d3a;
        --accent-light: #ff7b55;
        --accent-dark: #c94a2a;
        --bg: #f5f7fa;
        --bg-white: #ffffff;
        --bg-card: #ffffff;
        --bg-dark: #0f1b33;
        --text: #1e293b;
        --text-light: #64748b;
        --text-white: #f8fafc;
        --text-muted: #94a3b8;
        --border: #e2e8f0;
        --border-light: #f1f5f9;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
        --shadow: 0 4px 16px rgba(0,0,0,0.08), 0 2px 8px rgba(0,0,0,0.04);
        --shadow-lg: 0 12px 40px rgba(0,0,0,0.12), 0 4px 16px rgba(0,0,0,0.06);
        --shadow-accent: 0 4px 20px rgba(232,93,58,0.35);
        --radius-sm: 8px;
        --radius: 12px;
        --radius-lg: 20px;
        --radius-xl: 28px;
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-sans: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
        --container: 1200px;
        --header-h: 72px;
    }

    /* ===== 基础 Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
        font-family: var(--font-sans);
        font-size: 16px;
        line-height: 1.7;
        color: var(--text);
        background: var(--bg);
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
    img { max-width: 100%; height: auto; display: block; }
    a { color: var(--accent); text-decoration: none; transition: color var(--transition); }
    a:hover { color: var(--accent-dark); }
    a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
    button { font-family: inherit; cursor: pointer; border: none; background: none; }
    input, textarea { font-family: inherit; font-size: 1rem; }
    ul, ol { list-style: none; }
    h1, h2, h3, h4, h5, h6 { line-height: 1.25; color: var(--primary); font-weight: 700; }
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    h4 { font-size: 1.25rem; }

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

    /* ===== 按钮 ===== */
    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        padding: 10px 24px;
        font-size: 0.95rem;
        font-weight: 600;
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        border: 2px solid transparent;
        white-space: nowrap;
    }
    .btn-primary {
        background: var(--accent);
        color: #fff;
        border-color: var(--accent);
        box-shadow: var(--shadow-accent);
    }
    .btn-primary:hover {
        background: var(--accent-dark);
        border-color: var(--accent-dark);
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 8px 30px rgba(232,93,58,0.4);
    }
    .btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
    .btn-outline {
        background: transparent;
        color: var(--text-white);
        border-color: rgba(255,255,255,0.4);
    }
    .btn-outline:hover {
        background: rgba(255,255,255,0.12);
        border-color: rgba(255,255,255,0.7);
        color: #fff;
        transform: translateY(-2px);
    }
    .btn-outline:active { transform: translateY(0); }
    .btn-sm { padding: 6px 16px; font-size: 0.85rem; }
    .btn-lg { padding: 14px 36px; font-size: 1.05rem; border-radius: var(--radius); }

    /* ===== 标签 / 徽章 ===== */
    .badge {
        display: inline-block;
        padding: 4px 14px;
        font-size: 0.78rem;
        font-weight: 600;
        border-radius: 100px;
        background: var(--accent);
        color: #fff;
        letter-spacing: 0.3px;
    }
    .badge-outline {
        background: transparent;
        color: var(--accent);
        border: 1.5px solid var(--accent);
    }
    .badge-category {
        background: rgba(15,27,51,0.08);
        color: var(--primary-light);
        font-weight: 500;
    }

    /* ===== Header / 导航 ===== */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: var(--header-h);
        background: rgba(15,27,51,0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-bottom: 1px solid rgba(255,255,255,0.06);
        z-index: 1000;
        transition: background var(--transition);
    }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: var(--header-h);
        gap: 20px;
    }
    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--text-white);
        font-size: 1.3rem;
        font-weight: 800;
        letter-spacing: 0.5px;
        white-space: nowrap;
        flex-shrink: 0;
    }
    .logo i {
        font-size: 1.5rem;
        color: var(--accent);
        background: rgba(232,93,58,0.15);
        padding: 8px;
        border-radius: 10px;
    }
    .logo span { background: linear-gradient(135deg, #fff 60%, rgba(255,255,255,0.7)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
    .nav-links {
        display: flex;
        align-items: center;
        gap: 6px;
    }
    .nav-links a {
        display: inline-flex;
        align-items: center;
        padding: 8px 18px;
        font-size: 0.92rem;
        font-weight: 500;
        color: rgba(255,255,255,0.7);
        border-radius: var(--radius-sm);
        transition: all var(--transition);
        position: relative;
    }
    .nav-links a:hover {
        color: #fff;
        background: rgba(255,255,255,0.08);
    }
    .nav-links a.active {
        color: #fff;
        background: rgba(232,93,58,0.2);
    }
    .nav-links a.active::after {
        content: '';
        position: absolute;
        bottom: 4px;
        left: 50%;
        transform: translateX(-50%);
        width: 20px;
        height: 3px;
        background: var(--accent);
        border-radius: 3px;
    }
    .nav-right {
        display: flex;
        align-items: center;
        gap: 12px;
        flex-shrink: 0;
    }
    .nav-search {
        display: flex;
        align-items: center;
        background: rgba(255,255,255,0.1);
        border-radius: 100px;
        padding: 0 16px;
        height: 40px;
        border: 1px solid rgba(255,255,255,0.08);
        transition: all var(--transition);
    }
    .nav-search:focus-within {
        background: rgba(255,255,255,0.15);
        border-color: rgba(232,93,58,0.4);
    }
    .nav-search i { color: rgba(255,255,255,0.4); font-size: 0.9rem; margin-right: 8px; }
    .nav-search input {
        background: none;
        border: none;
        outline: none;
        color: #fff;
        font-size: 0.88rem;
        width: 140px;
        padding: 6px 0;
    }
    .nav-search input::placeholder { color: rgba(255,255,255,0.35); }
    .nav-search input::-ms-clear { display: none; }
    .mobile-toggle {
        display: none;
        width: 42px;
        height: 42px;
        align-items: center;
        justify-content: center;
        color: #fff;
        font-size: 1.3rem;
        border-radius: var(--radius-sm);
        transition: background var(--transition);
    }
    .mobile-toggle:hover { background: rgba(255,255,255,0.08); }

    /* ===== 文章 Hero ===== */
    .article-hero {
        position: relative;
        padding: 140px 0 80px;
        margin-top: var(--header-h);
        background: var(--primary-dark);
        overflow: hidden;
        min-height: 380px;
        display: flex;
        align-items: center;
    }
    .article-hero-bg {
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        opacity: 0.25;
        z-index: 1;
    }
    .article-hero .overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(15,27,51,0.92) 0%, rgba(15,27,51,0.7) 60%, rgba(232,93,58,0.15) 100%);
        z-index: 2;
    }
    .article-hero .container {
        position: relative;
        z-index: 3;
    }
    .article-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.5);
        margin-bottom: 20px;
        flex-wrap: wrap;
    }
    .article-breadcrumb a {
        color: rgba(255,255,255,0.6);
        transition: color var(--transition);
    }
    .article-breadcrumb a:hover { color: var(--accent); }
    .article-breadcrumb span { color: rgba(255,255,255,0.3); }
    .article-breadcrumb .current { color: rgba(255,255,255,0.8); }
    .article-hero .badge {
        margin-bottom: 16px;
        display: inline-block;
    }
    .article-hero h1 {
        font-size: 2.6rem;
        color: #fff;
        max-width: 900px;
        line-height: 1.2;
        margin-bottom: 16px;
        letter-spacing: -0.3px;
    }
    .article-hero .meta {
        display: flex;
        align-items: center;
        gap: 20px;
        color: rgba(255,255,255,0.6);
        font-size: 0.9rem;
        flex-wrap: wrap;
    }
    .article-hero .meta i { margin-right: 6px; opacity: 0.6; }
    .article-hero .meta span { display: inline-flex; align-items: center; }
    .article-hero-notfound h1 { color: rgba(255,255,255,0.6); }
    .article-hero-notfound .notfound-icon {
        font-size: 3rem;
        color: rgba(255,255,255,0.15);
        margin-bottom: 16px;
    }

    /* ===== 文章正文区 ===== */
    .article-content-section {
        padding: 60px 0;
        background: var(--bg);
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 48px;
        align-items: start;
    }
    .article-main {
        background: var(--bg-white);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow);
        overflow: hidden;
        padding: 40px 48px;
    }
    .article-main-notfound {
        text-align: center;
        padding: 80px 48px;
    }
    .article-main-notfound .notfound-icon {
        font-size: 4rem;
        color: var(--text-muted);
        margin-bottom: 20px;
        opacity: 0.4;
    }
    .article-main-notfound h2 {
        font-size: 1.8rem;
        margin-bottom: 12px;
    }
    .article-main-notfound p {
        color: var(--text-light);
        margin-bottom: 24px;
        font-size: 1.05rem;
    }
    .article-summary {
        font-size: 1.1rem;
        line-height: 1.8;
        color: var(--text-light);
        border-left: 4px solid var(--accent);
        padding: 16px 20px;
        background: rgba(232,93,58,0.04);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        margin-bottom: 32px;
    }
    .article-body {
        font-size: 1.05rem;
        line-height: 1.9;
        color: var(--text);
    }
    .article-body p {
        margin-bottom: 1.4em;
    }
    .article-body h2, .article-body h3, .article-body h4 {
        margin-top: 2em;
        margin-bottom: 0.8em;
        color: var(--primary);
    }
    .article-body ul, .article-body ol {
        margin-bottom: 1.4em;
        padding-left: 1.8em;
    }
    .article-body ul { list-style: disc; }
    .article-body ol { list-style: decimal; }
    .article-body li { margin-bottom: 0.4em; }
    .article-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
    .article-body a:hover { color: var(--accent-dark); }
    .article-body img {
        border-radius: var(--radius);
        margin: 2em 0;
        box-shadow: var(--shadow);
    }
    .article-body blockquote {
        border-left: 4px solid var(--accent);
        padding: 16px 24px;
        margin: 1.8em 0;
        background: rgba(232,93,58,0.04);
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        color: var(--text-light);
        font-style: italic;
    }
    .article-body code {
        background: #f1f5f9;
        padding: 2px 10px;
        border-radius: 4px;
        font-size: 0.9em;
        color: var(--accent-dark);
    }
    .article-body pre {
        background: var(--primary);
        color: #e2e8f0;
        padding: 24px;
        border-radius: var(--radius);
        overflow-x: auto;
        margin: 1.8em 0;
        font-size: 0.9rem;
        line-height: 1.6;
    }
    .article-body pre code { background: none; color: inherit; padding: 0; }
    .article-body table {
        width: 100%;
        border-collapse: collapse;
        margin: 1.8em 0;
        font-size: 0.95rem;
    }
    .article-body th, .article-body td {
        padding: 12px 16px;
        border: 1px solid var(--border);
        text-align: left;
    }
    .article-body th { background: var(--primary); color: #fff; font-weight: 600; }
    .article-body tr:nth-child(even) { background: #f8fafc; }
    .article-body hr {
        margin: 2.5em 0;
        border: none;
        border-top: 2px solid var(--border);
    }

    /* ===== 侧边栏 ===== */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 28px;
    }
    .sidebar-card {
        background: var(--bg-white);
        border-radius: var(--radius);
        box-shadow: var(--shadow-sm);
        padding: 24px;
        border: 1px solid var(--border-light);
    }
    .sidebar-card h3 {
        font-size: 1.1rem;
        margin-bottom: 16px;
        padding-bottom: 12px;
        border-bottom: 2px solid var(--border);
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .sidebar-card h3 i { color: var(--accent); }
    .sidebar-list li {
        padding: 10px 0;
        border-bottom: 1px solid var(--border-light);
    }
    .sidebar-list li:last-child { border-bottom: none; }
    .sidebar-list a {
        color: var(--text);
        font-size: 0.92rem;
        display: flex;
        align-items: center;
        gap: 8px;
        transition: all var(--transition);
    }
    .sidebar-list a:hover { color: var(--accent); padding-left: 4px; }
    .sidebar-list a i { color: var(--text-muted); font-size: 0.7rem; }
    .sidebar-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }
    .sidebar-tags a {
        display: inline-block;
        padding: 5px 14px;
        font-size: 0.82rem;
        border-radius: 100px;
        background: rgba(15,27,51,0.05);
        color: var(--text-light);
        transition: all var(--transition);
        border: 1px solid var(--border);
    }
    .sidebar-tags a:hover {
        background: var(--accent);
        color: #fff;
        border-color: var(--accent);
        transform: translateY(-1px);
    }
    .sidebar-cta {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
        color: #fff;
        border: none;
        text-align: center;
    }
    .sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.15); }
    .sidebar-cta h3 i { color: var(--accent); }
    .sidebar-cta p { color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-bottom: 16px; }
    .sidebar-cta .btn { width: 100%; }

    /* ===== 文章底部信息 ===== */
    .article-footer-meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 16px;
        margin-top: 40px;
        padding-top: 24px;
        border-top: 2px solid var(--border);
    }
    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        align-items: center;
    }
    .article-tags span { color: var(--text-light); font-size: 0.9rem; margin-right: 4px; }
    .article-tags a {
        display: inline-block;
        padding: 4px 14px;
        font-size: 0.8rem;
        border-radius: 100px;
        background: rgba(15,27,51,0.05);
        color: var(--text-light);
        border: 1px solid var(--border);
        transition: all var(--transition);
    }
    .article-tags a:hover {
        background: var(--accent);
        color: #fff;
        border-color: var(--accent);
    }
    .article-share {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .article-share span { color: var(--text-light); font-size: 0.9rem; }
    .article-share a {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        border-radius: 50%;
        background: var(--bg);
        color: var(--text-light);
        transition: all var(--transition);
        border: 1px solid var(--border);
    }
    .article-share a:hover {
        background: var(--accent);
        color: #fff;
        border-color: var(--accent);
        transform: translateY(-2px);
    }

    /* ===== 推荐文章 ===== */
    .recommend-section {
        padding: 60px 0;
        background: var(--bg-white);
    }
    .recommend-section .section-title {
        text-align: center;
        margin-bottom: 40px;
    }
    .recommend-section .section-title h2 {
        font-size: 1.8rem;
        margin-bottom: 8px;
    }
    .recommend-section .section-title p {
        color: var(--text-light);
        font-size: 1rem;
    }
    .recommend-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    .recommend-card {
        background: var(--bg);
        border-radius: var(--radius);
        overflow: hidden;
        transition: all var(--transition);
        border: 1px solid var(--border-light);
        display: flex;
        flex-direction: column;
    }
    .recommend-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-lg);
        border-color: transparent;
    }
    .recommend-card .card-img {
        width: 100%;
        height: 180px;
        object-fit: cover;
        background: var(--border);
    }
    .recommend-card .card-body {
        padding: 20px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }
    .recommend-card .card-body .badge {
        align-self: flex-start;
        margin-bottom: 10px;
        font-size: 0.72rem;
        padding: 3px 12px;
    }
    .recommend-card .card-body h3 {
        font-size: 1.05rem;
        line-height: 1.4;
        margin-bottom: 8px;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .recommend-card .card-body h3 a { color: var(--primary); }
    .recommend-card .card-body h3 a:hover { color: var(--accent); }
    .recommend-card .card-body p {
        font-size: 0.88rem;
        color: var(--text-light);
        line-height: 1.6;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
        margin-bottom: 12px;
        flex: 1;
    }
    .recommend-card .card-body .card-meta {
        font-size: 0.8rem;
        color: var(--text-muted);
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .recommend-card .card-body .card-meta i { margin-right: 4px; opacity: 0.6; }

    /* ===== CTA 区 ===== */
    .cta-section {
        padding: 60px 0;
        background: var(--bg);
    }
    .cta-box {
        background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 60%, var(--primary-dark) 100%);
        border-radius: var(--radius-xl);
        padding: 56px 48px;
        text-align: center;
        color: #fff;
        position: relative;
        overflow: hidden;
    }
    .cta-box::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
        opacity: 0.06;
        z-index: 1;
    }
    .cta-box > * { position: relative; z-index: 2; }
    .cta-box h2 {
        color: #fff;
        font-size: 2rem;
        margin-bottom: 12px;
    }
    .cta-box p {
        color: rgba(255,255,255,0.7);
        font-size: 1.05rem;
        max-width: 600px;
        margin: 0 auto 28px;
    }
    .cta-box .btn-group {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 16px;
        flex-wrap: wrap;
    }

    /* ===== 页脚 ===== */
    .site-footer {
        background: var(--primary-dark);
        color: rgba(255,255,255,0.7);
        padding: 60px 0 0;
        border-top: 1px solid rgba(255,255,255,0.04);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1fr;
        gap: 40px;
        padding-bottom: 40px;
        border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .footer-brand .logo-text {
        font-size: 1.3rem;
        font-weight: 800;
        color: #fff;
        display: block;
        margin-bottom: 12px;
        background: linear-gradient(135deg, #fff 60%, rgba(255,255,255,0.6));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .footer-brand p {
        font-size: 0.9rem;
        line-height: 1.7;
        color: rgba(255,255,255,0.5);
        max-width: 360px;
    }
    .footer-col h4 {
        color: #fff;
        font-size: 1rem;
        margin-bottom: 16px;
        font-weight: 600;
    }
    .footer-col a {
        display: block;
        color: rgba(255,255,255,0.5);
        font-size: 0.9rem;
        padding: 4px 0;
        transition: all var(--transition);
    }
    .footer-col 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: 20px 0;
        font-size: 0.85rem;
        color: rgba(255,255,255,0.35);
    }
    .footer-bottom a { color: rgba(255,255,255,0.5); }
    .footer-bottom a:hover { color: var(--accent); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .article-hero h1 { font-size: 2.2rem; }
        .article-layout { grid-template-columns: 1fr; }
        .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        .recommend-grid { grid-template-columns: repeat(2, 1fr); }
        .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    }

    @media (max-width: 768px) {
        :root { --header-h: 64px; }
        .container { padding: 0 16px; }
        h1 { font-size: 2rem; }
        h2 { font-size: 1.6rem; }

        .nav-links { display: none; }
        .nav-links.open {
            display: flex;
            flex-direction: column;
            position: absolute;
            top: var(--header-h);
            left: 0;
            width: 100%;
            background: rgba(15,27,51,0.98);
            backdrop-filter: blur(20px);
            padding: 16px 24px;
            gap: 4px;
            border-bottom: 1px solid rgba(255,255,255,0.06);
        }
        .nav-links.open a { width: 100%; padding: 12px 16px; }
        .nav-links.open a.active::after { display: none; }
        .nav-links.open a.active { background: rgba(232,93,58,0.15); }
        .mobile-toggle { display: flex; }
        .nav-search { display: none; }
        .nav-search.open-mobile {
            display: flex;
            position: absolute;
            top: calc(var(--header-h) + 60px);
            left: 16px;
            right: 16px;
            width: auto;
            background: rgba(255,255,255,0.12);
        }
        .nav-search.open-mobile input { width: 100%; }

        .article-hero { padding: 100px 0 50px; min-height: 280px; }
        .article-hero h1 { font-size: 1.6rem; }
        .article-hero .meta { gap: 12px; font-size: 0.82rem; flex-direction: column; align-items: flex-start; }

        .article-main { padding: 24px 20px; border-radius: var(--radius); }
        .article-main-notfound { padding: 40px 20px; }
        .article-summary { font-size: 1rem; padding: 12px 16px; }
        .article-body { font-size: 0.98rem; }
        .article-sidebar { grid-template-columns: 1fr; }

        .article-footer-meta { flex-direction: column; align-items: flex-start; }

        .recommend-grid { grid-template-columns: 1fr; gap: 16px; }
        .recommend-section { padding: 40px 0; }
        .recommend-card .card-img { height: 160px; }

        .cta-section { padding: 40px 0; }
        .cta-box { padding: 36px 24px; border-radius: var(--radius-lg); }
        .cta-box h2 { font-size: 1.4rem; }

        .footer-grid { grid-template-columns: 1fr; gap: 24px; }
        .footer-bottom { flex-direction: column; text-align: center; }
    }

    @media (max-width: 520px) {
        .article-hero h1 { font-size: 1.35rem; }
        .article-body { font-size: 0.93rem; }
        .article-body table { font-size: 0.82rem; }
        .article-body th, .article-body td { padding: 8px 10px; }
        .cta-box .btn-group .btn { width: 100%; }
        .recommend-card .card-body h3 { font-size: 0.95rem; }
    }

    /* ===== 工具类 ===== */
    .text-center { text-align: center; }
    .mt-1 { margin-top: 8px; }
    .mt-2 { margin-top: 16px; }
    .mt-3 { margin-top: 24px; }
    .mt-4 { margin-top: 32px; }
    .mb-1 { margin-bottom: 8px; }
    .mb-2 { margin-bottom: 16px; }
    .mb-3 { margin-bottom: 24px; }
    .gap-1 { gap: 8px; }
    .gap-2 { gap: 16px; }
    .flex-center { display: flex; align-items: center; justify-content: center; }
    .flex-between { display: flex; align-items: center; justify-content: space-between; }