/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --accent: #f59e0b;
  --accent-hover: #d97706;
  --accent-soft: rgba(245, 158, 11, 0.12);
  --bg: #f8fafc;
  --bg-alt: #f1f5f9;
  --bg-dark: #0f172a;
  --text: #1e293b;
  --text-light: #64748b;
  --text-lighter: #94a3b8;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.1);
  --shadow-accent: 0 4px 20px rgba(245, 158, 11, 0.3);
  --spacing-section: 90px;
  --spacing-section-sm: 60px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== 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: "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;
}

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

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

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

ul, ol {
  list-style: none;
}

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

button {
  cursor: pointer;
  border: none;
  background: none;
}

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

.section {
  padding: var(--spacing-section) 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-hover);
  font-size: 14px;
  font-weight: 600;
  padding: 6px 20px;
  border-radius: 30px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.8;
}

/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.04);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  flex-shrink: 0;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: var(--shadow-accent);
}

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

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}

.main-nav a {
  padding: 8px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-light);
  border-radius: 30px;
  position: relative;
  transition: var(--transition);
}

.main-nav a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.main-nav a.active {
  color: var(--accent-hover);
  background: var(--accent-soft);
  font-weight: 600;
}

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

.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-alt);
  border-radius: 30px;
  height: 40px;
  padding: 0 16px;
  width: 200px;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(245, 158, 11, 0.1);
  width: 240px;
  background: #fff;
}

.search-box input {
  flex: 1;
  background: transparent;
  border: none;
  font-size: 14px;
  color: var(--text);
  width: 100%;
}

.search-box button {
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 14px;
  padding: 4px;
}

.search-box button:hover {
  color: var(--accent);
}

.btn-login {
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  border-radius: 30px;
  border: 1px solid var(--border);
  white-space: nowrap;
  transition: var(--transition);
}

.btn-login:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-cta {
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  border-radius: 30px;
  white-space: nowrap;
  box-shadow: var(--shadow-accent);
  transition: var(--transition);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(245, 158, 11, 0.4);
  color: #fff;
}

.mobile-menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  background: var(--bg-alt);
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--text);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  min-height: 680px;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.75)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.hero-content {
  padding: 80px 0;
  max-width: 720px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 8px 20px;
  border-radius: 30px;
  font-size: 14px;
  color: #fbbf24;
  margin-bottom: 24px;
}

.hero-badge i {
  font-size: 14px;
}

.hero h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, #fbbf24, #f59e0b);
  -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-feats {
  display: flex;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.hero-feat {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
}

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

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

.hero-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 36px;
  box-shadow: var(--shadow-accent);
  transition: var(--transition);
}

.hero-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(245, 158, 11, 0.4);
  color: #fff;
}

.hero-btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  border-radius: 36px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  transition: var(--transition);
}

.hero-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

/* ========== 核心特性 ========== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), #fbbf24);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(245, 158, 11, 0.3);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: var(--accent-soft);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--accent-hover);
  margin-bottom: 20px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--accent);
  color: #fff;
  transform: scale(1.05);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}

.feature-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ========== 分类入口 ========== */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.category-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: block;
  height: 100%;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.category-card-img {
  height: 220px;
  position: relative;
  overflow: hidden;
}

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

.category-card:hover .category-card-img img {
  transform: scale(1.08);
}

.category-card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.6), transparent);
}

.category-card-body {
  padding: 28px;
  text-align: left;
}

.category-card-body h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.category-card-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 16px;
}

.category-card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-hover);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}

.category-card-link i {
  transition: transform 0.3s;
}

.category-card:hover .category-card-link i {
  transform: translateX(4px);
}

/* ========== 数据统计 ========== */
.stats-section {
  position: relative;
  background: linear-gradient(135deg, var(--primary), var(--primary-light)), url('/assets/images/backpic/back-2.png') center/cover;
  padding: 80px 0;
  color: #fff;
}

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

.stat-item {
  text-align: center;
  padding: 20px;
}

.stat-icon {
  font-size: 32px;
  color: #fbbf24;
  margin-bottom: 16px;
}

.stat-number {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #fbbf24, #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* ========== 最新资讯 ========== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}

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

.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px 0;
}

.badge {
  background: var(--accent-soft);
  color: var(--accent-hover);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
}

.news-date {
  font-size: 13px;
  color: var(--text-lighter);
}

.news-card-body {
  padding: 16px 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 10px;
  transition: var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card:hover .news-card-body h3 {
  color: var(--accent-hover);
}

.news-card-body p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card-more {
  margin-top: auto;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-hover);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-card-more i {
  font-size: 12px;
  transition: transform 0.3s;
}

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

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
  background: #fff;
  border-radius: var(--radius);
  border: 1px dashed var(--border);
}

/* ========== 图文介绍 ========== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}

.about-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 380px;
}

.about-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.1), transparent);
  pointer-events: none;
}

.about-content h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
}

.about-content h2 .highlight {
  color: var(--accent-hover);
}

.about-content p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-list {
  margin-top: 24px;
}

.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: var(--text);
}

.about-list li i {
  color: var(--accent);
  margin-top: 4px;
  font-size: 14px;
}

.about-list li strong {
  font-weight: 600;
}

/* ========== 使用流程 ========== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  position: relative;
}

.step-item {
  text-align: center;
  position: relative;
  padding: 32px 24px;
}

.step-number {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  box-shadow: var(--shadow-accent);
  position: relative;
  z-index: 2;
}

.step-item::after {
  content: '';
  position: absolute;
  top: 56px;
  left: calc(50% + 48px);
  right: calc(-50% + 48px);
  height: 2px;
  background: var(--border);
  z-index: 1;
}

.step-item:last-child::after {
  display: none;
}

.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.step-item p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ========== FAQ ========== */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}

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

.faq-item:hover {
  border-color: rgba(245, 158, 11, 0.3);
  box-shadow: var(--shadow);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  gap: 16px;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--accent-hover);
}

.faq-question i {
  font-size: 18px;
  color: var(--text-lighter);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-item.open .faq-question i {
  transform: rotate(45deg);
  color: var(--accent);
}

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

.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 0;
}

.faq-item.open .faq-answer {
  max-height: 300px;
}

/* ========== CTA ========== */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(30, 41, 59, 0.85)), url('/assets/images/backpic/back-3.png') center/cover;
  color: #fff;
  text-align: center;
  overflow: hidden;
}

.cta-inner {
  max-width: 640px;
  margin: 0 auto;
}

.cta-inner h2 {
  font-size: 40px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-inner h2 .highlight {
  color: #fbbf24;
}

.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 36px;
  line-height: 1.8;
}

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

.cta-btn-primary {
  padding: 16px 44px;
  background: linear-gradient(135deg, var(--accent), #fbbf24);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  border-radius: 36px;
  box-shadow: var(--shadow-accent);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.cta-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 36px rgba(245, 158, 11, 0.4);
  color: #fff;
}

.cta-btn-ghost {
  padding: 16px 44px;
  background: transparent;
  color: #fff;
  font-size: 16px;
  font-weight: 500;
  border-radius: 36px;
  border: 1px solid rgba(255, 255, 255, 0.4);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.cta-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border-color: #fff;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 280px;
}

.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}

.footer-col a:hover {
  color: #fbbf24;
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

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

.footer-bottom a:hover {
  color: #fbbf24;
}

/* ========== 移动端响应式 ========== */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

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

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

  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .step-item::after {
    display: none;
  }

  .search-box {
    width: 40px;
    padding: 0 12px;
    overflow: hidden;
  }

  .search-box:focus-within {
    width: 180px;
  }

  .search-box.js-expanded {
    width: 180px;
  }

  .btn-login {
    display: none;
  }

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

@media (max-width: 768px) {
  :root {
    --spacing-section: 60px;
    --spacing-section-sm: 40px;
  }

  .header-inner {
    height: 64px;
  }

  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    flex-direction: column;
    padding: 16px 24px;
    gap: 8px;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    transform: translateY(-120%);
    transition: transform 0.3s ease;
    z-index: 999;
    border-bottom: 1px solid var(--border);
    align-items: stretch;
    text-align: center;
  }

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

  .main-nav a {
    padding: 14px;
    font-size: 16px;
    border-radius: 12px;
    text-align: center;
  }

  .header-actions {
    gap: 8px;
  }

  .search-box {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .btn-cta {
    padding: 8px 18px;
    font-size: 13px;
  }

  .hero {
    min-height: 560px;
  }

  .hero h1 {
    font-size: 36px;
  }

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

  .hero-feats {
    gap: 12px;
  }

  .hero-feat {
    font-size: 13px;
  }

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

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .stat-number {
    font-size: 36px;
  }

  .cta-inner h2 {
    font-size: 30px;
  }

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

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

  .hero {
    min-height: 500px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero-desc {
    font-size: 14px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-btn-primary,
  .hero-btn-ghost {
    width: 100%;
    justify-content: center;
  }

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

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

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

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

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

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

  .cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .cta-btn-primary,
  .cta-btn-ghost {
    width: 100%;
    justify-content: center;
  }

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

/* ========== 按钮焦点状态 ========== */
.btn-cta:focus-visible,
.hero-btn-primary:focus-visible,
.cta-btn-primary:focus-visible,
.btn-login:focus-visible,
.search-box button:focus-visible,
.mobile-menu-toggle:focus-visible {
  outline: 3px solid rgba(245, 158, 11, 0.3);
  outline-offset: 2px;
}

a:focus-visible {
  outline: 3px solid rgba(245, 158, 11, 0.3);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ========== 通用动画 ========== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ========== Foundation 覆盖 ========== */
.row {
  max-width: 1200px;
}

.column, .columns {
  padding: 0 15px;
}

.clearfix::before,
.clearfix::after {
  display: table;
  content: ' ';
  flex-basis: 0;
  order: 1;
}

.clearfix::after {
  clear: both;
}

/* 避免 Foundation 默认按钮样式 */
.button {
  margin: 0;
}

/* roulang page: category1 */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #eef2ff;
  --secondary: #f59e0b;
  --secondary-light: #fef3c7;
  --accent: #06b6d4;
  --bg-body: #f8fafc;
  --bg-white: #ffffff;
  --bg-soft: #f0f4ff;
  --bg-dark: #0f172a;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border: #e2e8f0;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(30, 41, 59, 0.06);
  --shadow-md: 0 8px 24px rgba(30, 41, 59, 0.08);
  --shadow-lg: 0 20px 50px rgba(30, 41, 59, 0.12);
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 96px;
  --font-head: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

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

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
}

ul, ol {
  list-style: none;
}

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

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

.grid-x {
  display: flex;
  flex-wrap: wrap;
}

/* ========== 顶部导航 ========== */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 10px rgba(15, 23, 42, 0.04);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-main);
  letter-spacing: -0.5px;
  flex-shrink: 0;
  font-family: var(--font-head);
}

.brand-logo .logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
}

.main-nav a {
  padding: 9px 18px;
  border-radius: 100px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all 0.3s ease;
}

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

.main-nav a.active {
  color: var(--primary-dark);
  background: var(--primary-light);
  box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.25);
}

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

.header-search {
  position: relative;
  width: 200px;
}

.header-search input {
  width: 100%;
  height: 40px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg-body);
  padding-left: 38px;
  padding-right: 36px;
  font-size: 0.9rem;
  color: var(--text-main);
  transition: all 0.3s ease;
}

.header-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
  background: #fff;
}

.header-search i {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
  font-size: 0.85rem;
  pointer-events: none;
}

.btn-header {
  height: 40px;
  padding: 0 20px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
  border: none;
}

.btn-header:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.35);
}

.btn-header:focus-visible {
  outline: 3px solid rgba(99, 102, 241, 0.35);
  outline-offset: 2px;
}

@media (max-width: 1024px) {
  .header-search {
    width: 150px;
  }
  .header-actions .btn-header span {
    display: none;
  }
  .header-actions .btn-header {
    width: 42px;
    padding: 0;
  }
}

@media (max-width: 900px) {
  .header-inner {
    gap: 8px;
  }
  .main-nav a {
    padding: 8px 14px;
    font-size: 0.88rem;
  }
  .header-search {
    display: none;
  }
}

@media (max-width: 639px) {
  .header-inner {
    height: 64px;
  }
  .main-nav {
    width: 100%;
    overflow-x: auto;
    justify-content: flex-start;
    padding: 0 4px;
    scrollbar-width: none;
  }
  .main-nav::-webkit-scrollbar {
    display: none;
  }
  .main-nav a {
    flex-shrink: 0;
    font-size: 0.82rem;
    padding: 7px 12px;
  }
  .header-actions {
    margin-left: auto;
  }
}

/* ========== 页内横幅 ========== */
.page-banner {
  position: relative;
  background: linear-gradient(120deg, #0f172a 0%, #1e1b4b 60%, #312e81 100%);
  color: #fff;
  padding: 86px 0 76px;
  overflow: hidden;
}

.page-banner .banner-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center 30%;
  opacity: 0.25;
  z-index: 0;
}

.page-banner .banner-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.page-banner h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 18px;
  letter-spacing: -1px;
  font-family: var(--font-head);
}

.page-banner h1 .highlight {
  background: linear-gradient(90deg, #818cf8, #38bdf8);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-banner p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
  margin-bottom: 30px;
  max-width: 640px;
}

.banner-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  backdrop-filter: blur(8px);
}

.banner-badge i {
  color: #a5b4fc;
}

@media (max-width: 639px) {
  .page-banner {
    padding: 56px 0 52px;
  }
  .page-banner h1 {
    font-size: 2rem;
  }
  .page-banner p {
    font-size: 1rem;
  }
}

/* ========== 面包屑 ========== */
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.breadcrumb-list a {
  color: var(--text-muted);
  transition: color 0.3s;
}

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

.breadcrumb-list .separator {
  color: var(--text-light);
}

.breadcrumb-list .current {
  color: var(--text-main);
  font-weight: 600;
}

/* ========== 通用板块 ========== */
.section {
  padding: var(--space-lg) 0;
}

.section-sm {
  padding: var(--space-md) 0;
}

.section-dark {
  background: var(--bg-dark);
  color: #fff;
}

.section-header {
  margin-bottom: var(--space-md);
}

.section-label {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.3px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.5px;
  font-family: var(--font-head);
  margin-bottom: 14px;
  color: var(--text-main);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 680px;
  line-height: 1.8;
}

@media (max-width: 639px) {
  .section {
    padding: 48px 0;
  }
  .section-title {
    font-size: 1.55rem;
  }
}

/* ========== 功能卡片 ========== */
.feature-grid {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -12px;
}

.feature-item {
  padding: 12px;
  width: 33.333%;
}

.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 30px 26px;
  height: 100%;
  transition: all 0.35s ease;
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(99, 102, 241, 0.25);
}

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

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  background: var(--primary-light);
  color: var(--primary);
}

.feature-icon.green {
  background: #dcfce7;
  color: #16a34a;
}

.feature-icon.amber {
  background: var(--secondary-light);
  color: #d97706;
}

.feature-icon.cyan {
  background: #cffafe;
  color: #0891b2;
}

.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  font-family: var(--font-head);
  color: var(--text-main);
}

.feature-card p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
}

@media (max-width: 1024px) {
  .feature-item {
    width: 50%;
  }
}

@media (max-width: 639px) {
  .feature-item {
    width: 100%;
  }
}

/* ========== 图文内容区块 ========== */
.content-block {
  display: flex;
  align-items: center;
  gap: 48px;
  margin-bottom: 60px;
}

.content-block.reverse {
  flex-direction: row-reverse;
}

.content-visual {
  flex: 0 0 46%;
  position: relative;
}

.content-visual img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  height: auto;
}

.content-visual .visual-badge {
  position: absolute;
  bottom: 18px;
  left: 18px;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border-radius: 100px;
  padding: 8px 20px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.content-text {
  flex: 1;
}

.content-text h2 {
  font-size: 1.75rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 14px;
  font-family: var(--font-head);
  letter-spacing: -0.3px;
}

.content-text p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 20px;
}

.check-list {
  margin: 20px 0 0;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 8px 0;
  color: var(--text-main);
}

.check-list li i {
  color: var(--primary);
  margin-top: 4px;
  flex-shrink: 0;
}

@media (max-width: 900px) {
  .content-block, .content-block.reverse {
    flex-direction: column;
    gap: 30px;
  }
}

/* ========== 步骤流程 ========== */
.steps-grid {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -12px;
}

.step-item {
  padding: 12px;
  width: 25%;
}

.step-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 32px 26px;
  height: 100%;
  text-align: center;
  border: 1px solid var(--border);
  transition: all 0.35s ease;
  position: relative;
}

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

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  font-weight: 800;
  font-size: 1.15rem;
  box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35);
}

.step-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  font-family: var(--font-head);
}

.step-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

@media (max-width: 1024px) {
  .step-item {
    width: 50%;
  }
}

@media (max-width: 639px) {
  .step-item {
    width: 100%;
  }
}

/* ========== 数据统计 ========== */
.stats-section {
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  opacity: 0.12;
}

.stats-grid {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -12px;
  position: relative;
  z-index: 1;
}

.stat-item {
  padding: 12px;
  width: 25%;
}

.stat-card {
  text-align: center;
  padding: 24px 12px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.stat-card .stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  font-family: var(--font-head);
  line-height: 1.2;
  margin-bottom: 6px;
}

.stat-card .stat-number span {
  color: #a5b4fc;
}

.stat-card .stat-label {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
  font-weight: 500;
}

.stats-section .section-title {
  color: #fff;
}

.stats-section .section-desc {
  color: rgba(255, 255, 255, 0.7);
}

@media (max-width: 900px) {
  .stat-item {
    width: 50%;
  }
}

@media (max-width: 520px) {
  .stat-item {
    width: 50%;
    padding: 8px;
  }
  .stat-card .stat-number {
    font-size: 1.8rem;
  }
}

/* ========== 指南卡片 ========== */
.guide-grid {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -12px;
}

.guide-item {
  padding: 12px;
  width: 33.333%;
}

.guide-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all 0.35s ease;
}

.guide-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.guide-cover {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

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

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

.guide-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 23, 42, 0.3), transparent 50%);
}

.guide-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary-dark);
  backdrop-filter: blur(8px);
}

.guide-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.guide-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  font-family: var(--font-head);
  color: var(--text-main);
}

.guide-body p {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.75;
  flex: 1;
}

.guide-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-light);
}

.guide-meta a {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.guide-meta a:hover {
  color: var(--primary-dark);
}

@media (max-width: 1024px) {
  .guide-item {
    width: 50%;
  }
}

@media (max-width: 639px) {
  .guide-item {
    width: 100%;
  }
}

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

.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  user-select: none;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text-main);
  font-family: var(--font-head);
}

.faq-question i {
  color: var(--primary);
  flex-shrink: 0;
  transition: transform 0.3s;
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-muted);
  line-height: 1.85;
  font-size: 0.95rem;
}

.faq-answer a {
  color: var(--primary);
  font-weight: 600;
}

.faq-answer a:hover {
  text-decoration: underline;
}

/* ========== CTA ========== */
.cta-section {
  background: linear-gradient(135deg, #4f46e5 0%, #6366f1 50%, #0ea5e9 100%);
  border-radius: var(--radius-lg);
  margin: var(--space-lg) 0;
  position: relative;
  overflow: hidden;
  padding: 60px 50px;
  color: #fff;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -30px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
}

.cta-section::after {
  content: '';
  position: absolute;
  bottom: -60px;
  left: 30%;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
}

.cta-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  flex-wrap: wrap;
}

.cta-text h2 {
  font-size: 1.9rem;
  font-weight: 800;
  font-family: var(--font-head);
  margin-bottom: 10px;
  letter-spacing: -0.3px;
}

.cta-text p {
  font-size: 1.05rem;
  opacity: 0.9;
  max-width: 500px;
}

.cta-btn-group {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.35s ease;
  white-space: nowrap;
  border: none;
}

.btn-light {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
}

.btn-light:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}

.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.6);
}

.btn-outline-light:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-3px);
}

@media (max-width: 900px) {
  .cta-section {
    padding: 44px 30px;
  }
  .cta-inner {
    flex-direction: column;
    text-align: center;
  }
}

/* ========== 相关推荐 ========== */
.related-grid {
  display: flex;
  flex-wrap: wrap;
  margin: 0 -12px;
}

.related-item {
  padding: 12px;
  width: 33.333%;
}

.related-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all 0.35s ease;
  height: 100%;
  display: block;
}

.related-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.related-thumb img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
}

.related-info {
  padding: 20px 22px;
}

.related-info h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  font-family: var(--font-head);
  line-height: 1.5;
}

.related-info p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.related-info .related-date {
  font-size: 0.8rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

@media (max-width: 1024px) {
  .related-item {
    width: 50%;
  }
}

@media (max-width: 639px) {
  .related-item {
    width: 100%;
  }
}

/* ========== 页脚 ========== */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding-top: 70px;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 48px;
  gap: 40px;
}

.footer-brand {
  flex: 1 1 300px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  font-family: var(--font-head);
}

.footer-logo .logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: #fff;
}

.footer-brand p {
  line-height: 1.8;
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-col {
  flex: 1 1 180px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 20px;
  font-family: var(--font-head);
}

.footer-col a {
  display: block;
  padding: 7px 0;
  font-size: 0.92rem;
  color: #94a3b8;
  transition: color 0.3s, padding-left 0.3s;
}

.footer-col a:hover {
  color: #fff;
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 26px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: #64748b;
}

@media (max-width: 900px) {
  .footer-grid {
    gap: 30px;
  }
}

@media (max-width: 639px) {
  .site-footer {
    padding-top: 50px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ========== 移动端菜单处理 ========== */
.menu-toggle {
  display: none;
}

@media (max-width: 639px) {
  .header-inner {
    flex-wrap: wrap;
  }
  .main-nav {
    order: 3;
    width: 100%;
    margin-top: 3px;
    padding: 0 0 10px;
  }
}

/* ========== 基础增强 ========== */
::selection {
  background: rgba(99, 102, 241, 0.2);
}

.btn-primary-custom {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 30px;
  border-radius: 100px;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.98rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  box-shadow: 0 6px 18px rgba(99, 102, 241, 0.35);
}

.btn-primary-custom:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(79, 70, 229, 0.4);
}

.btn-primary-custom:focus-visible {
  outline: 3px solid rgba(99, 102, 241, 0.4);
  outline-offset: 2px;
}

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

.mt-1 { margin-top: 16px; }
.mt-2 { margin-top: 32px; }
.mb-1 { margin-bottom: 16px; }
.mb-2 { margin-bottom: 32px; }

/* roulang page: article */
:root {
  --primary: #1b2a4a;
  --primary-light: #2d4a7a;
  --primary-dark: #0d1b2a;
  --accent: #ff6b35;
  --accent-hover: #e5582a;
  --accent-soft: #fff3ee;
  --bg: #f0f4f8;
  --surface: #ffffff;
  --text: #1a1a2e;
  --text-muted: #5f6b7a;
  --border: #e2e8f0;
  --radius: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
  --shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
  --transition: all 0.3s ease;
  --header-h: 74px;
  --section-pad: 84px;
  --container-max: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; position: relative; }
::selection { background: var(--accent); color: #fff; }
:focus-visible { outline: 3px solid rgba(255, 107, 53, 0.4); outline-offset: 2px; }

/* ---- Header & Nav ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 999;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 20px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
  flex-shrink: 0;
}
.site-logo:hover { color: var(--primary); }
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(27, 42, 74, 0.3);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.main-nav a {
  padding: 8px 18px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  position: relative;
  transition: var(--transition);
}
.main-nav a:hover {
  color: var(--primary);
  background: rgba(27, 42, 74, 0.06);
}
.main-nav a.active {
  color: var(--accent);
  font-weight: 600;
  background: var(--accent-soft);
}
.main-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 0 14px;
  height: 38px;
  transition: var(--transition);
}
.search-box:focus-within {
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.12);
}
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  width: 130px;
  font-size: 14px;
  color: var(--text);
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box button {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  padding: 4px;
  transition: var(--transition);
}
.search-box button:hover { color: var(--accent); }
.btn-login {
  height: 38px;
  padding: 0 18px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  background: transparent;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.btn-login:hover {
  border-color: var(--primary);
  background: rgba(27, 42, 74, 0.04);
}
.btn-cta {
  height: 38px;
  padding: 0 22px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border: none;
  display: flex;
  align-items: center;
  gap: 8px;
  box-shadow: 0 4px 14px rgba(27, 42, 74, 0.3);
  transition: var(--transition);
}
.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(27, 42, 74, 0.4);
  color: #fff;
}
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--primary);
  cursor: pointer;
  padding: 8px;
  border-radius: 8px;
}
.mobile-toggle:hover { background: rgba(27, 42, 74, 0.06); }

/* ---- Section titles ---- */
.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 5px 16px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.section-header h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.25;
  margin-bottom: 10px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
}

/* ---- Article Hero ---- */
.article-banner {
  position: relative;
  min-height: 320px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  padding: 80px 0;
  overflow: hidden;
}
.article-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 27, 42, 0.92) 0%, rgba(27, 42, 74, 0.75) 60%, rgba(45, 74, 122, 0.5) 100%);
}
.article-banner .container { position: relative; z-index: 2; }
.article-banner-content {
  max-width: 780px;
}
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}
.article-banner-content h1 {
  font-size: 38px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}
.article-banner-meta {
  display: flex;
  align-items: center;
  gap: 24px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  flex-wrap: wrap;
}
.article-banner-meta span {
  display: flex;
  align-items: center;
  gap: 7px;
}
.article-banner-meta i { color: var(--accent); }

/* ---- Breadcrumb ---- */
.breadcrumb-wrap {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 14px 0;
  font-size: 14px;
}
.breadcrumb-wrap .container {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}
.breadcrumb-wrap a { color: var(--text-muted); }
.breadcrumb-wrap a:hover { color: var(--accent); }
.breadcrumb-wrap .sep { color: #c0c8d0; }

/* ---- Article Section ---- */
.article-section {
  padding: 56px 0 40px;
}
.article-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 40px;
  border: 1px solid var(--border);
}
.article-content {
  font-size: 16px;
  line-height: 1.9;
  color: #334155;
}
.article-content p {
  margin-bottom: 1.4em;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary);
  margin: 1.6em 0 0.8em;
  padding-bottom: 0.4em;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin: 1.4em 0 0.6em;
}
.article-content h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
  margin: 1.2em 0 0.5em;
}
.article-content ul {
  list-style: disc;
  padding-left: 1.6em;
  margin-bottom: 1.4em;
}
.article-content ol {
  list-style: decimal;
  padding-left: 1.6em;
  margin-bottom: 1.4em;
}
.article-content li {
  margin-bottom: 0.5em;
}
.article-content img {
  border-radius: 10px;
  margin: 1.6em 0;
  box-shadow: var(--shadow-sm);
}
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: var(--accent-soft);
  padding: 18px 22px;
  margin: 1.6em 0;
  border-radius: 0 8px 8px 0;
  color: #444;
  font-style: italic;
}
.article-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.article-content a:hover {
  color: var(--accent-hover);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6em 0;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 12px 14px;
  text-align: left;
}
.article-content table th {
  background: var(--bg);
  font-weight: 600;
  color: var(--primary);
}
.article-content code {
  background: var(--bg);
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 14px;
  color: var(--accent);
}
.article-content pre {
  background: var(--primary-dark);
  color: #e2e8f0;
  padding: 20px;
  border-radius: 10px;
  margin: 1.6em 0;
  overflow-x: auto;
}
.article-content pre code {
  background: transparent;
  padding: 0;
  color: #e2e8f0;
}

/* ---- Sidebar ---- */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.sidebar-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.sidebar-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.sidebar-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 12px;
}
.sidebar-card h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
}
.sidebar-card ul.info-list li {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
  font-size: 14px;
}
.sidebar-card ul.info-list li:last-child {
  border-bottom: none;
}
.sidebar-card ul.info-list li span:first-child {
  color: var(--text-muted);
  font-weight: 500;
}
.sidebar-card ul.info-list li span:last-child {
  color: var(--primary);
  font-weight: 600;
}
.about-card img {
  border-radius: 8px;
  margin-bottom: 16px;
  width: 100%;
  object-fit: cover;
  height: 120px;
}
.about-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 18px;
  line-height: 1.7;
}
.cta-card {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border: none;
  text-align: center;
  color: #fff;
}
.cta-card h3 {
  color: #fff;
}
.cta-card h3::after {
  background: var(--accent);
  left: 50%;
  transform: translateX(-50%);
}
.cta-card p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  margin-bottom: 20px;
}
.cta-card .btn-cta-panel {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 12px 28px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.4);
}
.cta-card .btn-cta-panel:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(255, 107, 53, 0.45);
}
.related-card .related-list li {
  display: flex;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px dashed var(--border);
}
.related-card .related-list li:last-child {
  border-bottom: none;
}
.related-card .related-list a {
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}
.related-card .related-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  line-height: 1.5;
  transition: var(--transition);
}
.related-card .related-list a:hover .related-title {
  color: var(--accent);
}
.related-card .related-date {
  font-size: 12px;
  color: var(--text-muted);
}

/* ---- Features Section ---- */
.features-section {
  padding: var(--section-pad) 0;
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.feature-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
}
.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.feature-card img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}
.feature-card-body {
  padding: 24px;
}
.feature-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.feature-card-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}
.feature-card-body .feature-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.feature-card-body .feature-link:hover {
  gap: 10px;
}

/* ---- FAQ Section ---- */
.faq-section {
  padding: var(--section-pad) 0;
  background: var(--bg);
}
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 24px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow);
  border-color: rgba(255, 107, 53, 0.3);
}
.faq-item h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.faq-item h3 i {
  color: var(--accent);
  font-size: 14px;
}
.faq-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  padding-left: 24px;
}

/* ---- CTA Section ---- */
.cta-section {
  padding: 80px 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
  color: #fff;
}
.cta-inner h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 30px;
  line-height: 1.7;
}
.cta-btn-group {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.cta-btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 14px 36px;
  border-radius: 28px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}
.cta-btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(255, 107, 53, 0.45);
  color: #fff;
}
.cta-btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: #fff;
  padding: 13px 34px;
  border-radius: 28px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition);
}
.cta-btn-outline:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  transform: translateY(-3px);
}

/* ---- Not Found ---- */
.not-found-section {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px;
}
.not-found-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 60px 80px;
  text-align: center;
  max-width: 560px;
  width: 100%;
  border: 1px solid var(--border);
}
.not-found-card i {
  font-size: 60px;
  color: var(--accent);
  margin-bottom: 20px;
  display: block;
}
.not-found-card h2 {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 12px;
}
.not-found-card p {
  font-size: 16px;
  color: var(--text-muted);
  margin-bottom: 30px;
}
.not-found-card a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff;
  padding: 12px 32px;
  border-radius: 24px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  box-shadow: 0 4px 16px rgba(27, 42, 74, 0.3);
}
.not-found-card a:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  color: #fff;
  box-shadow: 0 8px 24px rgba(27, 42, 74, 0.35);
}

/* ---- Footer ---- */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 28px;
  border-top: 3px solid var(--accent);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.footer-logo:hover { color: #fff; }
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
  max-width: 320px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 5px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  text-align: center;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  :root { --section-pad: 64px; }
  .header-inner { gap: 12px; }
  .search-box input { width: 90px; }
  .main-nav a { padding: 8px 12px; font-size: 14px; }
  .btn-cta { padding: 0 16px; font-size: 13px; }
  .btn-login { padding: 0 14px; }
  .article-card { padding: 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --section-pad: 50px; --header-h: 60px; }
  .container { padding: 0 18px; }
  .site-header { background: #fff; }
  .header-actions {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 16px 18px;
    flex-direction: column;
    align-items: stretch;
    box-shadow: var(--shadow);
    gap: 10px;
  }
  .header-actions.open { display: flex; }
  .search-box input { width: 100%; }
  .search-box { width: 100%; }
  .btn-login, .btn-cta { justify-content: center; width: 100%; }
  .mobile-toggle { display: block; }
  .main-nav {
    display: none;
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    padding: 16px 18px;
    flex-direction: column;
    align-items: stretch;
    box-shadow: var(--shadow);
    gap: 4px;
  }
  .main-nav.open { display: flex; }
  .main-nav a {
    padding: 12px 16px;
    border-radius: 10px;
    font-size: 15px;
    border-bottom: 1px solid var(--border);
  }
  .main-nav a:last-child { border-bottom: none; }
  .main-nav a.active::after { display: none; }
  .main-nav a.active {
    background: var(--accent-soft);
    color: var(--accent);
  }
  .article-banner { min-height: 260px; padding: 60px 0; }
  .article-banner-content h1 { font-size: 28px; }
  .article-section { padding: 32px 0 24px; }
  .article-card { padding: 20px; border-radius: 16px; }
  .section-header h2 { font-size: 26px; }
  .feature-card { margin-bottom: 20px; }
  .cta-inner h2 { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .not-found-card { padding: 40px 28px; }
}

@media (max-width: 520px) {
  :root { --section-pad: 40px; }
  .container { padding: 0 14px; }
  .site-logo { font-size: 18px; }
  .logo-icon { width: 34px; height: 34px; font-size: 15px; border-radius: 8px; }
  .article-banner-content h1 { font-size: 24px; }
  .article-banner-meta { gap: 14px; font-size: 13px; }
  .section-header h2 { font-size: 22px; }
  .section-header p { font-size: 14px; }
  .article-content { font-size: 15px; }
  .article-content h2 { font-size: 21px; }
  .article-content h3 { font-size: 18px; }
  .sidebar-card { padding: 20px; }
  .cta-btn-group { flex-direction: column; align-items: center; }
  .cta-btn-primary, .cta-btn-outline { width: 100%; justify-content: center; }
  .faq-item { padding: 18px; }
  .faq-item h3 { font-size: 15px; flex-wrap: wrap; }
}

/* roulang page: category2 */
:root {
  --primary: #0F172A;
  --primary-light: #1E293B;
  --primary-dark: #0B1220;
  --accent: #D4A24C;
  --accent-light: #F0C86E;
  --accent-dark: #B8862E;
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --text: #1E293B;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --border: #E2E8F0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-full: 999px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, .06);
  --shadow-md: 0 6px 24px rgba(15, 23, 42, .08);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, .12);
  --shadow-accent: 0 8px 24px rgba(184, 134, 46, .35);
  --transition: all .3s cubic-bezier(.25, .46, .45, .94);
}
*, *::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-white);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; display: block; }
button, input { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 88px 0; }

/* ====== 按钮 ====== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: var(--primary-dark);
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(184, 134, 46, .45);
}
.btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-accent); }
.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, .6);
  color: #fff;
}
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.btn-gold {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: var(--primary-dark);
  box-shadow: var(--shadow-accent);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(184, 134, 46, .45); }
.btn-dark {
  background: var(--primary);
  color: #fff;
}
.btn-dark:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn:focus-visible { outline: 3px solid rgba(212, 162, 76, .5); outline-offset: 2px; }

/* ====== Header ====== */
.site-header {
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-inner {
  display: flex;
  align-items: center;
  min-height: 74px;
  gap: 20px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), #1E3A5F);
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: var(--accent-light);
  font-size: 18px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, .2);
}
.brand-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.brand-text span { color: var(--accent-dark); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
}
.main-nav a {
  padding: 8px 18px;
  border-radius: var(--radius-full);
  font-size: 14.5px;
  font-weight: 500;
  color: #475569;
  transition: var(--transition);
}
.main-nav a:hover { background: #F1F5F9; color: var(--primary); }
.main-nav a.active { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(15, 23, 42, .2); }
.header-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.search-box {
  display: flex;
  align-items: center;
  background: #F1F5F9;
  border-radius: var(--radius-full);
  padding: 0 4px 0 14px;
  gap: 6px;
  transition: var(--transition);
  border: 1px solid transparent;
}
.search-box:focus-within { border-color: var(--accent); background: #fff; box-shadow: 0 0 0 3px rgba(212, 162, 76, .15); }
.search-box i { color: var(--text-muted); font-size: 13px; }
.search-box input {
  border: none;
  background: transparent;
  padding: 8px 0;
  width: 130px;
  outline: none;
  font-size: 13.5px;
  color: var(--text);
}
.search-box input::placeholder { color: var(--text-light); }
.search-box button {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  border: none;
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: var(--transition);
}
.search-box button:hover { background: var(--accent-dark); }
.btn-login {
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  background: transparent;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.btn-login:hover { border-color: var(--primary); background: #F8FAFC; }
.btn-start {
  padding: 9px 22px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  color: var(--primary-dark);
  box-shadow: 0 4px 12px rgba(184, 134, 46, .3);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.btn-start:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(184, 134, 46, .4); }
.btn-start:active { transform: translateY(0); }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--primary);
  cursor: pointer;
  padding: 8px;
  border-radius: 10px;
}
.nav-toggle:hover { background: #F1F5F9; }

/* ====== Page Hero ====== */
.page-hero {
  position: relative;
  padding: 96px 0;
  background-color: var(--primary);
  overflow: hidden;
  color: #fff;
}
.page-hero .hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: .45;
  animation: heroScale 18s ease-in-out infinite alternate;
}
@keyframes heroScale {
  0% { transform: scale(1); }
  100% { transform: scale(1.08); }
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(11, 18, 32, .95) 30%, rgba(15, 23, 42, .75) 65%, rgba(212, 162, 76, .25));
}
.page-hero::after {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 162, 76, .18), transparent 70%);
  top: -180px;
  right: -100px;
  pointer-events: none;
}
.page-hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 60px;
  align-items: center;
}
.hero-content { max-width: 640px; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212, 162, 76, .15);
  border: 1px solid rgba(212, 162, 76, .4);
  color: var(--accent-light);
  padding: 6px 18px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 24px;
  text-transform: uppercase;
}
.hero-content h1 {
  font-size: 3rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 20px;
}
.text-gold {
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-content p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, .78);
  margin-bottom: 28px;
  line-height: 1.85;
  max-width: 520px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-bottom: 32px;
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  color: rgba(255, 255, 255, .85);
}
.hero-meta i { color: var(--accent-light); }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  backdrop-filter: blur(10px);
}
.stat-item { text-align: center; }
.stat-item strong {
  display: block;
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--accent-light);
  line-height: 1.2;
  letter-spacing: -1px;
}
.stat-item span { font-size: 13px; color: rgba(255, 255, 255, .7); }

/* ====== Section Header ====== */
.section-header { text-align: center; margin-bottom: 56px; max-width: 640px; margin-left: auto; margin-right: auto; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212, 162, 76, .1);
  color: var(--accent-dark);
  padding: 6px 18px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 16px;
  border: 1px solid rgba(212, 162, 76, .3);
}
.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
  color: var(--primary);
}
.section-header p { color: var(--text-muted); font-size: 1rem; line-height: 1.8; }
.text-gradient {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ====== Steps ====== */
.steps-section { background: var(--bg-white); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.step-card {
  position: relative;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 24px 32px;
  text-align: center;
  transition: var(--transition);
  overflow: hidden;
}
.step-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
  background: #fff;
}
.step-num {
  position: absolute;
  top: 14px;
  right: 20px;
  font-size: 3rem;
  font-weight: 800;
  color: rgba(15, 23, 42, .07);
  line-height: 1;
  letter-spacing: -2px;
}
.step-icon {
  width: 68px;
  height: 68px;
  background: linear-gradient(135deg, var(--primary), #1E3A5F);
  border-radius: 20px;
  display: grid;
  place-items: center;
  margin: 0 auto 22px;
  font-size: 22px;
  color: var(--accent-light);
  box-shadow: 0 8px 20px rgba(15, 23, 42, .18);
  transition: var(--transition);
}
.step-card:hover .step-icon {
  transform: scale(1.08) rotate(-5deg);
  box-shadow: 0 12px 28px rgba(15, 23, 42, .25);
}
.step-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.step-card p { font-size: .875rem; color: var(--text-muted); line-height: 1.7; }

/* ====== Features ====== */
.features-section { background: var(--bg-light); }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(212, 162, 76, .4);
}
.feature-thumb { position: relative; height: 190px; overflow: hidden; }
.feature-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.feature-card:hover .feature-thumb img { transform: scale(1.08); }
.feature-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 18, 32, .4), transparent 60%);
}
.feature-body { padding: 26px 26px 30px; display: flex; flex-direction: column; flex: 1; }
.feature-body h3 { font-size: 1.1rem; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.feature-body p { font-size: .875rem; color: var(--text-muted); line-height: 1.75; margin-bottom: 18px; flex: 1; }
.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--accent-dark);
}
.feature-link i { transition: transform .3s ease; }
.feature-link:hover i { transform: translateX(4px); }

/* ====== Resources ====== */
.resources-section { background: #fff; }
.resources-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.resource-card {
  display: flex;
  gap: 20px;
  background: var(--bg-light);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 18px;
  transition: var(--transition);
  align-items: stretch;
}
.resource-card:hover {
  background: #fff;
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
  border-color: rgba(212, 162, 76, .35);
}
.resource-thumb {
  position: relative;
  width: 220px;
  min-height: 150px;
  border-radius: 10px;
  overflow: hidden;
  flex-shrink: 0;
}
.resource-thumb img { width: 100%; height: 100%; object-fit: cover; }
.resource-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 18, 32, .25), transparent 60%);
}
.resource-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(11, 18, 32, .82);
  color: var(--accent-light);
  font-size: 11.5px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-weight: 600;
  letter-spacing: .5px;
  backdrop-filter: blur(4px);
  z-index: 2;
}
.resource-body { display: flex; flex-direction: column; flex: 1; padding: 4px 0; }
.resource-body h3 { font-size: 1.02rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; line-height: 1.4; }
.resource-body p { font-size: .835rem; color: var(--text-muted); line-height: 1.7; flex: 1; }
.resource-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}
.resource-meta span { font-size: .78rem; color: var(--text-light); display: inline-flex; align-items: center; gap: 5px; }
.read-more { font-size: .82rem; font-weight: 600; color: var(--accent-dark); display: inline-flex; align-items: center; gap: 5px; }
.read-more i { transition: transform .3s ease; }
.read-more:hover i { transform: translateX(4px); }

/* ====== Guide ====== */
.guide-section {
  position: relative;
  background: linear-gradient(135deg, var(--primary) 0%, #16233B 100%);
  color: #fff;
  overflow: hidden;
}
.guide-section::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 162, 76, .15), transparent 65%);
  bottom: -160px;
  left: -100px;
}
.guide-section .section-header h2 { color: #fff; }
.guide-section .section-header p { color: rgba(255, 255, 255, .7); }
.guide-section .section-tag { background: rgba(212, 162, 76, .15); border-color: rgba(212, 162, 76, .4); color: var(--accent-light); }
.guide-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  position: relative;
  z-index: 2;
}
.guide-card {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  text-align: center;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}
.guide-card:hover {
  background: rgba(255, 255, 255, .1);
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, .3);
  border-color: rgba(212, 162, 76, .4);
}
.guide-card-dark {
  background: linear-gradient(145deg, rgba(212, 162, 76, .14), rgba(255, 255, 255, .04));
  border-color: rgba(212, 162, 76, .3);
}
.guide-card-light { background: rgba(255, 255, 255, .06); }
.guide-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 24px;
  border-radius: 24px;
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  display: grid;
  place-items: center;
  font-size: 28px;
  color: var(--primary-dark);
  box-shadow: 0 12px 32px rgba(212, 162, 76, .35);
  transition: var(--transition);
}
.guide-card:hover .guide-icon { transform: scale(1.08) rotate(-5deg); }
.guide-card h3 { font-size: 1.35rem; font-weight: 700; margin-bottom: 14px; }
.guide-card p { font-size: .925rem; color: rgba(255, 255, 255, .72); line-height: 1.8; margin-bottom: 28px; }

/* ====== FAQ ====== */
.faq-section { background: var(--bg-light); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  transition: var(--transition);
  overflow: hidden;
}
.faq-item:hover { border-color: rgba(212, 162, 76, .35); box-shadow: var(--shadow-sm); }
.faq-item[open] { border-color: rgba(212, 162, 76, .4); box-shadow: var(--shadow-md); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 26px;
  font-weight: 600;
  font-size: .95rem;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 14px;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 12px;
  margin-left: auto;
  color: var(--accent-dark);
  transition: transform .3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item summary:hover { background: #F8FAFC; }
.faq-item summary .faq-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: rgba(212, 162, 76, .12);
  color: var(--accent-dark);
  display: grid;
  place-items: center;
  font-size: 14px;
  flex-shrink: 0;
}
.faq-body { padding: 0 26px 24px 74px; color: var(--text-muted); font-size: .9rem; line-height: 1.8; }

/* ====== CTA ====== */
.cta-section {
  position: relative;
  padding: 88px 0;
  background: linear-gradient(135deg, var(--primary-dark), #1E3A5F 60%, #233B5C);
  overflow: hidden;
  color: #fff;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 162, 76, .2), transparent 65%);
  top: -250px;
  right: -150px;
}
.cta-section::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 162, 76, .1), transparent 65%);
  bottom: -180px;
  left: -100px;
}
.cta-inner { position: relative; z-index: 2; max-width: 680px; margin: 0 auto; }
.cta-inner h2 { font-size: 2.4rem; font-weight: 800; letter-spacing: -0.5px; margin-bottom: 16px; line-height: 1.25; }
.cta-inner p { color: rgba(255, 255, 255, .72); font-size: 1rem; margin-bottom: 32px; line-height: 1.8; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-note { margin-top: 20px; font-size: .82rem; color: rgba(255, 255, 255, .5); }

/* ====== Footer ====== */
.site-footer {
  background: var(--primary-dark);
  color: var(--text-light);
  padding: 64px 0 0;
  font-size: .875rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 17px;
  color: var(--primary-dark);
}
.footer-brand p { color: var(--text-light); line-height: 1.8; max-width: 280px; }
.footer-col h4 {
  color: #fff;
  font-size: .95rem;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.footer-col a {
  display: block;
  color: var(--text-light);
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom {
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: .78rem;
  color: rgba(255, 255, 255, .4);
}

/* ====== 响应式 ====== */
@media (max-width: 1024px) {
  .header-inner { gap: 14px; }
  .search-box { display: none; }
  .main-nav {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    display: none;
    z-index: 999;
    margin: 0;
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 12px 18px; border-radius: 10px; font-size: 15px; }
  .nav-toggle { display: block; }
  .header-actions { gap: 8px; }
  .btn-login { padding: 8px 16px; }
  .btn-start { padding: 8px 16px; font-size: 13px; }
  .page-hero { padding: 72px 0; }
  .page-hero .container { grid-template-columns: 1fr; gap: 48px; }
  .hero-content { max-width: 100%; }
  .hero-content h1 { font-size: 2.6rem; }
  .hero-stats { max-width: 480px; }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: 1fr; }
  .resource-card { flex-direction: column; }
  .resource-thumb { width: 100%; min-height: 160px; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 36px; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .page-hero { padding: 56px 0; }
  .hero-content h1 { font-size: 2rem; }
  .hero-content p { font-size: .95rem; }
  .section-header h2 { font-size: 1.75rem; }
  .section-header p { font-size: .9rem; }
  .steps-grid { grid-template-columns: 1fr; gap: 20px; }
  .features-grid { grid-template-columns: 1fr; }
  .resources-grid { grid-template-columns: 1fr; }
  .guide-card { padding: 36px 24px; }
  .cta-inner h2 { font-size: 1.8rem; }
  .btn-login { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { justify-content: center; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand-text { font-size: 1.15rem; }
  .brand-icon { width: 38px; height: 38px; }
  .header-inner { min-height: 66px; }
  .main-nav { top: 66px; }
  .btn-start i { display: none; }
  .hero-content h1 { font-size: 1.7rem; }
  .hero-meta { flex-direction: column; gap: 10px; }
  .hero-stats { grid-template-columns: repeat(3, 1fr); padding: 20px 12px; gap: 8px; }
  .stat-item strong { font-size: 1.4rem; }
  .stat-item span { font-size: 11px; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 1.5rem; }
  .feature-thumb { height: 160px; }
  .resource-card { padding: 14px; }
  .resource-thumb { min-height: 140px; }
  .faq-item summary { padding: 16px 18px; font-size: .88rem; }
  .faq-body { padding: 0 18px 18px 62px; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { gap: 28px; }
}

/* roulang page: category3 */
:root{
  --primary:#6d5efc;--primary-dark:#5648d4;--primary-light:#8b7dff;
  --secondary:#ffb84d;--secondary-dark:#f09f2e;
  --dark:#101836;--dark-2:#1a2340;
  --bg:#f5f6fa;--white:#fff;
  --text:#1b2240;--muted:#6f7891;
  --border:#e8eaf3;
  --radius:16px;--radius-sm:10px;--radius-lg:24px;
  --shadow:0 4px 20px rgba(20,26,60,.06);
  --shadow-lg:0 16px 44px rgba(20,26,60,.13);
  --transition:all .3s ease;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
input,button{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:none;background:none}
:focus-visible{outline:3px solid rgba(109,94,252,.4);outline-offset:2px;border-radius:4px}

.container{max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:88px 0}
.section-alt{background:var(--white)}
.section-dark{background:var(--dark);color:#fff}
.section-header{text-align:center;max-width:760px;margin:0 auto 52px}
.section-tag{display:inline-block;background:rgba(109,94,252,.08);color:var(--primary);font-size:13px;font-weight:600;padding:5px 16px;border-radius:999px;letter-spacing:.5px;margin-bottom:14px}
.section-title{font-size:38px;font-weight:700;line-height:1.3;letter-spacing:-1px;color:var(--text)}
.section-dark .section-title{color:#fff}
.section-subtitle{font-size:16px;color:var(--muted);margin-top:14px}
.section-dark .section-subtitle{color:rgba(255,255,255,.65)}

.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:15px;line-height:1;transition:var(--transition);border:none;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;box-shadow:0 8px 24px rgba(109,94,252,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(109,94,252,.38)}
.btn-secondary{background:linear-gradient(135deg,var(--secondary),var(--secondary-dark));color:#1b2240;box-shadow:0 8px 24px rgba(255,184,77,.25)}
.btn-secondary:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(255,184,77,.35)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.28);backdrop-filter:blur(4px)}
.btn-ghost:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-lg{padding:16px 38px;font-size:16px;border-radius:14px}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);height:70px}
.header-inner{max-width:1280px;height:70px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.header-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-icon{width:38px;height:38px;border-radius:11px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;box-shadow:0 6px 16px rgba(109,94,252,.3)}
.logo-text{font-size:22px;font-weight:700;letter-spacing:-.5px;color:var(--text)}
.logo-text span{color:var(--primary)}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{display:block;padding:9px 18px;border-radius:9px;font-size:15px;font-weight:500;color:var(--muted);transition:var(--transition);line-height:1.4}
.main-nav a:hover{color:var(--primary);background:rgba(109,94,252,.06)}
.main-nav a.active{color:var(--primary);background:rgba(109,94,252,.09);font-weight:600}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0}
.search-box{display:flex;align-items:center;gap:8px;background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:7px 16px;transition:var(--transition)}
.search-box:focus-within{border-color:var(--primary);background:#fff;box-shadow:0 0 0 3px rgba(109,94,252,.08)}
.search-box i{color:var(--muted);font-size:14px}
.search-box input{border:none;outline:none;background:transparent;width:110px;font-size:14px;color:var(--text)}
.search-box input::placeholder{color:#a0a7b9}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;background:var(--bg);border:1px solid var(--border);color:var(--text);align-items:center;justify-content:center;font-size:18px}

/* Hero */
.hero{position:relative;padding:100px 0 100px;overflow:hidden;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(10,16,40,.86) 30%,rgba(10,16,40,.55) 70%,rgba(10,16,40,.35));}
.hero-content{position:relative;z-index:2;max-width:760px;color:#fff;padding:30px 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);padding:7px 16px;border-radius:999px;font-size:13px;font-weight:500;letter-spacing:.8px;backdrop-filter:blur(6px);margin-bottom:22px}
.hero-badge i{color:var(--secondary)}
.hero h1{font-size:52px;font-weight:700;line-height:1.2;letter-spacing:-1.5px;margin-bottom:18px}
.hero h1 strong{color:var(--secondary);font-weight:700}
.hero p.lead{font-size:17px;color:rgba(255,255,255,.8);line-height:1.8;margin-bottom:32px;max-width:600px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:24px;margin-top:48px;flex-wrap:wrap}
.hero-meta-item{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.7);font-size:14px}
.hero-meta-item i{width:34px;height:34px;border-radius:8px;background:rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;color:var(--secondary);font-size:14px}

/* Category Cards */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{background:var(--white);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:var(--transition);display:flex;flex-direction:column}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.card-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:#eef0f7}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:24px;display:flex;flex-direction:column;flex:1}
.card-body .tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.badge{display:inline-block;background:rgba(109,94,252,.08);color:var(--primary);font-size:12px;font-weight:600;padding:3px 12px;border-radius:999px}
.badge-warn{background:rgba(255,184,77,.14);color:#b06e00}
.badge-green{background:rgba(16,185,129,.12);color:#059669}
.card-body h3{font-size:19px;font-weight:700;color:var(--text);line-height:1.4;margin-bottom:10px}
.card-body p{font-size:14.5px;color:var(--muted);line-height:1.7;margin-bottom:16px;flex:1}
.card-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary);font-weight:600;font-size:14px;transition:var(--transition)}
.card-link i{transition:transform .3s}
.card-link:hover{color:var(--primary-dark)}
.card-link:hover i{transform:translateX(4px)}

/* Hot Guide List */
.guide-list{display:flex;flex-direction:column;gap:24px}
.guide-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;display:flex;gap:0;box-shadow:var(--shadow);transition:var(--transition)}
.guide-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.guide-media{width:280px;flex-shrink:0;position:relative;overflow:hidden;background:#eef0f7}
.guide-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:transform .5s ease}
.guide-item:hover .guide-media img{transform:scale(1.05)}
.guide-content{padding:26px 28px;display:flex;flex-direction:column;justify-content:center}
.guide-content .meta-row{display:flex;align-items:center;gap:14px;margin-bottom:10px;font-size:13px;color:var(--muted)}
.guide-content .meta-row i{margin-right:4px;color:var(--primary)}
.guide-content h3{font-size:21px;font-weight:700;line-height:1.4;margin-bottom:10px}
.guide-content h3 a{color:var(--text);transition:color .2s}
.guide-content h3 a:hover{color:var(--primary)}
.guide-content p{font-size:14.5px;color:var(--muted);line-height:1.75;margin-bottom:14px}
.guide-tags{display:flex;gap:8px;flex-wrap:wrap}

/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;position:relative}
.step-item{position:relative;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:34px 26px;text-align:center;transition:var(--transition)}
.step-item:hover{background:rgba(255,255,255,.08);transform:translateY(-4px)}
.step-num{width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,var(--secondary),var(--secondary-dark));color:#1b2240;font-size:20px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 18px;box-shadow:0 8px 20px rgba(255,184,77,.3)}
.step-item:nth-child(2) .step-num{background:linear-gradient(135deg,#34d399,#10b981);box-shadow:0 8px 20px rgba(16,185,129,.25)}
.step-item:nth-child(3) .step-num{background:linear-gradient(135deg,#818cf8,#6366f1);box-shadow:0 8px 20px rgba(99,102,241,.3)}
.step-item:nth-child(4) .step-num{background:linear-gradient(135deg,#f472b6,#ec4899);box-shadow:0 8px 20px rgba(236,72,153,.25)}
.step-item h4{color:#fff;font-size:18px;font-weight:600;margin-bottom:10px}
.step-item p{color:rgba(255,255,255,.6);font-size:14px;line-height:1.7}
.step-arrow{position:absolute;top:50%;right:-26px;transform:translateY(-50%);color:rgba(255,255,255,.25);font-size:22px;z-index:3}
.steps-grid .step-item:last-child .step-arrow{display:none}

/* Stats */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.stat-item{background:var(--white);border-radius:var(--radius);padding:38px 26px;text-align:center;border:1px solid var(--border);box-shadow:var(--shadow);transition:var(--transition)}
.stat-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.stat-num{font-size:50px;font-weight:800;line-height:1.2;background:linear-gradient(135deg,var(--primary),var(--primary-dark));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:-2px}
.stat-item:nth-child(2) .stat-num{background:linear-gradient(135deg,#34d399,#059669);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-item:nth-child(3) .stat-num{background:linear-gradient(135deg,#f59e0b,#d97706);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-item:nth-child(4) .stat-num{background:linear-gradient(135deg,#ec4899,#db2777);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.stat-label{font-size:15px;color:var(--muted);margin-top:6px;font-weight:500}

/* FAQ */
.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:26px 28px;transition:var(--transition)}
.faq-item:hover{border-color:rgba(109,94,252,.3);box-shadow:var(--shadow)}
.faq-item h3{display:flex;align-items:flex-start;gap:12px;font-size:17px;font-weight:600;color:var(--text);cursor:pointer}
.faq-item h3 i{color:var(--primary);font-size:16px;margin-top:4px;flex-shrink:0}
.faq-item p{margin-top:12px;padding-left:28px;font-size:15px;color:var(--muted);line-height:1.8}

/* CTA */
.cta-section{position:relative;padding:96px 0;text-align:center;overflow:hidden}
.cta-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat}
.cta-bg::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,rgba(109,94,252,.92),rgba(16,24,54,.94))}
.cta-inner{position:relative;z-index:2;color:#fff;max-width:720px;margin:0 auto}
.cta-inner h2{font-size:40px;font-weight:700;line-height:1.3;letter-spacing:-1px;margin-bottom:16px}
.cta-inner p{font-size:16px;color:rgba(255,255,255,.8);margin-bottom:34px;line-height:1.8}
.cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* Footer */
.site-footer{background:var(--dark);color:rgba(255,255,255,.65);padding:70px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:44px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .footer-logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.55);max-width:300px}
.footer-brand .footer-logo .logo-icon{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;font-size:16px;color:#fff}
.footer-col h4{color:#fff;font-size:16px;font-weight:600;margin-bottom:20px}
.footer-col a{display:block;padding:6px 0;font-size:14px;color:rgba(255,255,255,.55);transition:var(--transition)}
.footer-col a:hover{color:var(--secondary);transform:translateX(4px)}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding:28px 0;font-size:13px;color:rgba(255,255,255,.4);flex-wrap:wrap;gap:10px}

/* Responsive */
@media(max-width:1024px){
  .card-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(2,1fr);gap:20px}
  .step-arrow{display:none}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .hero h1{font-size:40px}
  .header-actions .search-box{display:none}
}
@media(max-width:768px){
  .section{padding:64px 0}
  .section-title{font-size:30px}
  .hero{padding:70px 0 80px}
  .hero h1{font-size:34px}
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:70px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;gap:4px;border-bottom:1px solid var(--border);box-shadow:var(--shadow);transform:translateY(-120%);transition:var(--transition);z-index:99}
  .main-nav.open{transform:translateY(0)}
  .main-nav a{padding:12px 16px;font-size:16px;border-radius:8px}
  .header-actions .btn-ghost{display:none}
  .guide-item{flex-direction:column}
  .guide-media{width:100%;height:220px;position:relative}
  .guide-media img{position:absolute;inset:0}
  .steps-grid{grid-template-columns:1fr}
}
@media(max-width:520px){
  .container{padding:0 18px}
  .card-grid,.stats-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:29px}
  .hero p.lead{font-size:15px}
  .hero-meta{gap:12px}
  .cta-inner h2{font-size:30px}
  .search-box{display:none}
  .header-actions .btn-outline{display:none}
  .footer-bottom{flex-direction:column;text-align:center}
}