/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #c8102e;
  --primary-dark: #a00d24;
  --primary-light: #fdeef0;
  --secondary: #1a1a2e;
  --secondary-deep: #14141f;
  --accent: #d4a843;
  --bg: #f5f6fa;
  --bg-soft: #eef0f6;
  --card: #ffffff;
  --text: #1e222d;
  --text-weak: #6b7280;
  --border: #e5e7eb;
  --radius: 14px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(26,26,46,.06);
  --shadow-md: 0 8px 24px rgba(26,26,46,.08);
  --shadow-lg: 0 16px 40px rgba(26,26,46,.14);
  --sidebar-w: 264px;
  --header-h: 64px;
  --gap: 32px;
  --transition: .25s ease;
}

/* ===== 基础重置 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  word-break: break-word;
}

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

a {
  color: inherit;
  transition: color var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
}

input {
  font-family: inherit;
}

/* ===== 通用容器 ===== */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 74px 0;
}

/* ===== 版式框架：左侧导航 + 右侧内容 ===== */
.layout {
  display: flex;
  align-items: flex-start;
  min-height: 100vh;
}

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

.main-content {
  min-height: 60vh;
}

/* ===== 左侧竖向导航 ===== */
.site-sidebar {
  position: sticky;
  top: 0;
  width: var(--sidebar-w);
  height: 100vh;
  flex-shrink: 0;
  background: linear-gradient(180deg, var(--secondary) 0%, var(--secondary-deep) 100%);
  display: flex;
  flex-direction: column;
  padding: 30px 22px 24px;
  z-index: 100;
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  margin-bottom: 40px;
  padding: 0 6px;
}

.brand-mark {
  width: 42px;
  height: 42px;
  background: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 20px;
  color: #fff;
  box-shadow: 0 4px 16px rgba(200,16,46,.35);
  flex-shrink: 0;
}

.brand-text {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .02em;
  white-space: nowrap;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  border-radius: 10px;
  color: rgba(255,255,255,.68);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.nav-link i {
  width: 20px;
  text-align: center;
  font-size: 16px;
}

.nav-link:hover {
  background: rgba(255,255,255,.08);
  color: #fff;
}

.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(200,16,46,.28);
}

.side-card {
  margin-top: auto;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 22px 18px;
}

.side-card-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--accent);
  background: rgba(212,168,67,.12);
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.side-card h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 6px;
}

.side-card p {
  color: rgba(255,255,255,.5);
  font-size: 13px;
  line-height: 1.6;
  margin-bottom: 16px;
}

/* ===== 移动端顶部导航 ===== */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 300;
  height: var(--header-h);
  background: var(--secondary);
  padding: 0 20px;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 2px 12px rgba(20,20,31,.18);
}

.mobile-header .brand {
  margin-bottom: 0;
  padding: 0;
}

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

.mobile-header .brand-mark {
  width: 34px;
  height: 34px;
  font-size: 16px;
  border-radius: 10px;
}

.menu-toggle {
  background: rgba(255,255,255,.08);
  border: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  color: #fff;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

.menu-toggle:hover {
  background: rgba(255,255,255,.16);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: var(--secondary);
  padding: 16px 20px 26px;
  flex-direction: column;
  gap: 8px;
  z-index: 299;
  box-shadow: 0 18px 40px rgba(20,20,31,.28);
  border-bottom-left-radius: 18px;
  border-bottom-right-radius: 18px;
}

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

.mobile-menu .nav-link {
  font-size: 15px;
  padding: 14px 16px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border: none;
  line-height: 1.2;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn:focus-visible {
  outline: 3px solid rgba(200,16,46,.35);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(200,16,46,.28);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 10px 26px rgba(200,16,46,.34);
}

.btn-outline {
  background: rgba(255,255,255,.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,.3);
  backdrop-filter: blur(4px);
}

.btn-outline:hover {
  background: rgba(255,255,255,.2);
  border-color: rgba(255,255,255,.5);
}

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

.btn-sm {
  padding: 10px 20px;
  font-size: 14px;
  border-radius: 10px;
}

/* ===== 标签 / 徽章 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 14px;
  border-radius: 20px;
  white-space: nowrap;
}

.eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 12px;
  background: var(--primary-light);
  padding: 5px 14px;
  border-radius: 20px;
}

/* ===== 区块标题 ===== */
.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 52px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}

/* ===== Hero 首屏 ===== */
.hero {
  position: relative;
  min-height: 580px;
  display: flex;
  align-items: center;
  padding: 90px 0;
  overflow: hidden;
  border-bottom: 4px solid var(--primary);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(118deg, rgba(20,20,31,.92) 0%, rgba(20,20,31,.68) 46%, rgba(200,16,46,.38) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  padding: 0 32px;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  background: rgba(200,16,46,.25);
  border: 1px solid rgba(255,255,255,.18);
  padding: 8px 18px;
  border-radius: 30px;
  margin-bottom: 26px;
  backdrop-filter: blur(6px);
}

.hero-badge i {
  color: var(--accent);
}

.hero h1 {
  font-size: 52px;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: .01em;
}

.hero h1 span {
  color: #fff;
  background: linear-gradient(90deg, #ff6b84, var(--primary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 17px;
  color: rgba(255,255,255,.78);
  line-height: 1.85;
  max-width: 540px;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-stats {
  display: flex;
  gap: 42px;
  margin-top: 44px;
  padding-top: 30px;
  border-top: 1px solid rgba(255,255,255,.18);
}

.stat-item strong {
  display: block;
  font-size: 30px;
  font-weight: 900;
  color: #fff;
  line-height: 1.1;
}

.stat-item span {
  font-size: 13px;
  color: rgba(255,255,255,.55);
  letter-spacing: .05em;
}

/* ===== 核心说明 ===== */
.intro-section {
  background: var(--card);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(200,16,46,.18);
}

.feature-card i {
  width: 54px;
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 14px;
  margin-bottom: 18px;
}

.feature-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
}

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

.category-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.category-card {
  position: relative;
  display: block;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.category-card .category-media {
  position: relative;
  height: 190px;
  overflow: hidden;
}

.category-card .category-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.category-card .category-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(20,20,31,.45) 100%);
}

.category-tag {
  position: absolute;
  top: 16px;
  right: 16px;
  z-index: 2;
  font-size: 13px;
  font-weight: 800;
  color: #fff;
  background: rgba(200,16,46,.85);
  padding: 6px 14px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
  letter-spacing: .04em;
}

.category-body {
  padding: 26px 28px 30px;
}

.category-body h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 10px;
}

.category-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  margin-bottom: 18px;
}

.category-more {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: gap var(--transition);
}

.category-card:hover .category-more {
  gap: 12px;
}

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

.news-section .section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: none;
  text-align: left;
  gap: 20px;
}

.news-section .section-head h2 {
  margin-bottom: 0;
}

.news-count {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-weak);
  background: var(--bg-soft);
  padding: 8px 16px;
  border-radius: 30px;
  white-space: nowrap;
}

.news-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.news-card {
  display: flex;
  flex-direction: column;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(200,16,46,.22);
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.news-time {
  font-size: 12px;
  color: var(--text-weak);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-card h3 {
  font-size: 18px;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--text);
  transition: color var(--transition);
}

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

.news-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  margin-bottom: 18px;
  flex: 1;
}

.news-more {
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.news-card:hover .news-more {
  gap: 10px;
}

.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: 50px 20px;
  background: var(--bg-soft);
  border-radius: var(--radius);
  color: var(--text-weak);
  font-size: 15px;
}

/* ===== 使用流程 ===== */
.steps-section {
  background: var(--bg);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.step-item {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 30px 34px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.step-num {
  font-size: 44px;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, var(--primary), #ff6b84);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 18px;
  display: inline-block;
}

.step-item h3 {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 10px;
}

.step-item p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== 精选推荐 ===== */
.featured-section {
  background: var(--card);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.featured-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  display: block;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.featured-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: rgba(200,16,46,.2);
}

.featured-card:first-child {
  grid-column: span 3;
  display: flex;
  flex-direction: row;
}

.featured-card:first-child .featured-img {
  width: 54%;
  min-height: 260px;
}

.featured-card:first-child .featured-body {
  width: 46%;
}

.featured-card:first-child .featured-body h3 {
  font-size: 22px;
}

.featured-img {
  overflow: hidden;
  width: 100%;
  height: 180px;
}

.featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

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

.featured-body {
  padding: 22px 22px 24px;
}

.featured-body .badge {
  margin-bottom: 12px;
}

.featured-body h3 {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.5;
  margin-bottom: 8px;
}

.featured-body p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.75;
}

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

.faq-list {
  max-width: 820px;
  margin: 0 auto;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(200,16,46,.14);
}

.faq-item summary {
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--text);
  transition: color 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: 14px;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item[open] summary {
  color: var(--primary);
}

.faq-item .faq-answer {
  padding: 0 28px 24px;
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.85;
  border-top: 1px solid var(--border);
  margin: 0 28px 0;
  padding: 18px 0 24px;
}

/* ===== CTA 订阅 ===== */
.cta-section {
  background: var(--bg);
  padding-bottom: 80px;
}

.cta-inner {
  position: relative;
  background-image: linear-gradient(135deg, rgba(20,20,31,.94), rgba(200,16,46,.82)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  border-radius: 22px;
  padding: 64px 48px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.cta-inner::before {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(255,255,255,.14) 0%, transparent 70%);
  top: -80px;
  right: -60px;
  border-radius: 50%;
}

.cta-inner h2 {
  font-size: 34px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-inner p {
  color: rgba(255,255,255,.72);
  font-size: 15px;
  margin-bottom: 30px;
  position: relative;
  z-index: 1;
}

.cta-form {
  max-width: 520px;
  margin: 0 auto;
  display: flex;
  gap: 10px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.14);
  padding: 8px;
  border-radius: 14px;
  position: relative;
  z-index: 1;
  backdrop-filter: blur(6px);
}

.cta-form input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  color: #fff;
  padding: 12px 16px;
  outline: none;
  font-size: 15px;
}

.cta-form input::placeholder {
  color: rgba(255,255,255,.5);
}

.cta-form input:focus-visible {
  background: rgba(255,255,255,.06);
  border-radius: 8px;
}

.cta-form .btn {
  border-radius: 10px;
  white-space: nowrap;
}

.form-tip {
  margin-top: 14px;
  font-size: 12px;
  color: rgba(255,255,255,.45);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--secondary);
  color: rgba(255,255,255,.68);
  padding-top: 56px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  flex-wrap: wrap;
}

.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
}

.footer-brand p {
  font-size: 14px;
  color: rgba(255,255,255,.5);
  max-width: 300px;
  line-height: 1.8;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.footer-links a {
  color: rgba(255,255,255,.55);
  text-decoration: none;
  font-size: 14px;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.4);
}

.footer-bottom a {
  color: rgba(255,255,255,.55);
  text-decoration: none;
}

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

/* ===== 响应式断点 ===== */
@media (max-width: 1200px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .featured-card:first-child {
    grid-column: span 3;
  }
}

@media (max-width: 1080px) {
  .site-sidebar {
    display: none;
  }

  .mobile-header {
    display: flex;
  }

  .steps-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }

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

  .featured-card:first-child {
    grid-column: span 2;
    flex-direction: row;
  }

  .featured-card:first-child .featured-img {
    width: 55%;
    min-height: 240px;
  }

  .featured-card:first-child .featured-body {
    width: 45%;
  }
}

@media (max-width: 820px) {
  .section {
    padding: 56px 0;
  }

  .section-head {
    margin-bottom: 38px;
  }

  .section-head h2 {
    font-size: 26px;
  }

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

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

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

  .featured-card:first-child {
    grid-column: span 1;
    flex-direction: column;
  }

  .featured-card:first-child .featured-img {
    width: 100%;
    min-height: 200px;
  }

  .featured-card:first-child .featured-body {
    width: 100%;
  }

  .hero {
    min-height: 500px;
    padding: 70px 0;
  }

  .hero h1 {
    font-size: 38px;
  }

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

  .hero-stats {
    flex-direction: column;
    gap: 18px;
  }

  .cta-inner {
    padding: 46px 24px;
  }

  .cta-inner h2 {
    font-size: 27px;
  }

  .news-section .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 540px) {
  .container {
    padding: 0 18px;
  }

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

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

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

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn {
    width: 100%;
  }

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

  .featured-card:first-child .featured-img {
    height: 180px;
  }

  .cta-form {
    flex-direction: column;
  }

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

  .footer-top {
    flex-direction: column;
    gap: 28px;
  }

  .mobile-header {
    padding: 0 16px;
  }
}

/* roulang page: article */
:root{
  --primary:#C8102E;
  --primary-hover:#E01230;
  --primary-dark:#9B0C25;
  --primary-soft:#FFF0F2;
  --primary-glow:rgba(200,16,46,.16);
  --ink:#17171F;
  --ink-soft:#565C66;
  --ink-mute:#8B9099;
  --bg:#F5F6F8;
  --surface:#FFFFFF;
  --surface-soft:#FAFBFC;
  --border:#E6E8EE;
  --border-strong:#D6D9E0;
  --dark:#0D0D13;
  --dark-2:#15151E;
  --dark-3:#1D1D28;
  --radius:12px;
  --radius-lg:18px;
  --radius-pill:999px;
  --shadow-sm:0 1px 3px rgba(13,13,19,.05);
  --shadow-md:0 8px 24px rgba(13,13,19,.07);
  --shadow-lg:0 16px 44px rgba(13,13,19,.11);
  --container:1220px;
  --sidebar-w:272px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --transition:all .28s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font);background:var(--bg);color:var(--ink);line-height:1.65;font-size:15px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:var(--transition)}
button,input,textarea,select{font:inherit;border:none;outline:none}
ul,ol{list-style:none}
.container{width:min(var(--container),100% - 48px);margin-inline:auto}
.site-main{margin-left:var(--sidebar-w);min-height:100vh;display:flex;flex-direction:column}

/* ===== 左侧导航 ===== */
.site-sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sidebar-w);background:linear-gradient(165deg,#0D0D13 0%,#131320 60%,#161020 100%);
  z-index:200;border-right:1px solid rgba(255,255,255,.05);display:flex;flex-direction:column;
}
.sidebar-inner{display:flex;flex-direction:column;height:100%;padding:30px 22px;overflow-y:auto}
.brand{display:flex;align-items:center;gap:12px;padding:4px 6px 24px;border-bottom:1px solid rgba(255,255,255,.07);margin-bottom:26px}
.brand-mark{
  width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#E8556B);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800;color:#fff;
  box-shadow:0 6px 18px rgba(200,16,46,.35);letter-spacing:-1px;flex-shrink:0;
}
.brand-text{font-size:17px;font-weight:700;color:#F2F3F7;line-height:1.3;letter-spacing:.5px}
.side-nav{display:flex;flex-direction:column;gap:4px}
.nav-link{
  display:flex;align-items:center;gap:13px;padding:12px 14px;border-radius:10px;color:#A7AAB8;
  font-size:14.5px;font-weight:500;border:1px solid transparent;transition:var(--transition);
}
.nav-link i{width:20px;text-align:center;font-size:15px}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.06)}
.nav-link.active{color:#fff;background:linear-gradient(90deg,rgba(200,16,46,.28),rgba(200,16,46,.08));border-color:rgba(200,16,46,.35)}
.nav-link.active i{color:var(--primary-hover)}
.side-card{
  margin-top:auto;background:linear-gradient(150deg,rgba(200,16,46,.24),rgba(16,16,24,.4));
  border:1px solid rgba(255,255,255,.08);border-radius:14px;padding:18px;margin-bottom:6px;
}
.side-card-badge{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:600;color:#FFB3BE;background:rgba(200,16,46,.2);padding:4px 10px;border-radius:20px;margin-bottom:10px}
.side-card h4{color:#F2F3F7;font-size:15px;margin-bottom:6px}
.side-card p{color:#9DA0AE;font-size:12.5px;line-height:1.6;margin-bottom:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:10px;font-size:14px;font-weight:600;padding:10px 22px;cursor:pointer;transition:var(--transition);border:1px solid transparent;line-height:1.4}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(200,16,46,.3)}
.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px);box-shadow:0 6px 20px rgba(200,16,46,.4)}
.btn-primary:active{transform:translateY(0)}
.btn-sm{padding:7px 16px;font-size:13px;border-radius:8px}

/* ===== 文章首屏 ===== */
.article-hero{
  background:linear-gradient(135deg,rgba(13,13,19,.92) 0%,rgba(90,10,26,.82) 70%,rgba(160,15,40,.7) 100%),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding:72px 0 68px;color:#fff;position:relative;overflow:hidden;
}
.article-hero::after{
  content:'';position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(200,16,46,.35),transparent 70%);pointer-events:none;
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:24px}
.breadcrumb a{color:rgba(255,255,255,.8)}
.breadcrumb a:hover{color:#fff}
.breadcrumb i{font-size:10px;color:rgba(255,255,255,.35)}
.breadcrumb span{color:rgba(255,255,255,.6);max-width:260px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.hero-badge{
  display:inline-flex;align-items:center;gap:6px;background:rgba(200,16,46,.28);border:1px solid rgba(200,16,46,.5);
  color:#FFD3D9;font-size:12.5px;font-weight:600;padding:6px 14px;border-radius:20px;margin-bottom:18px;
}
.article-hero h1{font-size:clamp(26px,3.4vw,42px);font-weight:800;line-height:1.25;letter-spacing:.5px;max-width:820px;margin-bottom:20px}
.hero-meta{display:flex;flex-wrap:wrap;gap:18px;align-items:center;font-size:13.5px;color:rgba(255,255,255,.7)}
.hero-meta span{display:inline-flex;align-items:center;gap:7px}
.hero-meta i{color:#FF8A99;font-size:14px}

/* ===== 内容区 ===== */
.article-wrap{padding:56px 0 28px}
.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:40px;align-items:start}
.article-panel{
  background:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.article-cover{aspect-ratio:16/8;overflow:hidden;background:var(--surface-soft)}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.article-panel:hover .article-cover img{transform:scale(1.02)}
.article-body{padding:40px 44px 24px;font-size:15.5px;color:#3A3F48;line-height:1.85}
.article-body h2,.article-body h3,.article-body h4{color:var(--ink);font-weight:700;margin:1.6em 0 .7em;line-height:1.4}
.article-body h2{font-size:23px;padding-left:14px;border-left:4px solid var(--primary);border-radius:2px}
.article-body h3{font-size:19px}
.article-body p{margin-bottom:1.2em}
.article-body a{color:var(--primary);font-weight:600;border-bottom:1px solid rgba(200,16,46,.3)}
.article-body a:hover{color:var(--primary-hover);border-color:currentColor}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.4em}
.article-body ul li{list-style:disc;margin-bottom:.5em}
.article-body ol li{list-style:decimal;margin-bottom:.5em}
.article-body blockquote{
  margin:1.6em 0;padding:18px 24px;background:var(--primary-soft);border-left:4px solid var(--primary);
  border-radius:0 12px 12px 0;color:#6A2A32;font-style:italic;
}
.article-body img{border-radius:14px;margin:1.6em 0;box-shadow:var(--shadow-md)}
.article-body table{width:100%;border-collapse:collapse;margin:1.4em 0;border-radius:10px;overflow:hidden;font-size:14px}
.article-body table th,.article-body table td{border:1px solid var(--border);padding:10px 14px;text-align:left}
.article-body table th{background:var(--surface-soft);font-weight:600;color:var(--ink)}
.article-footer{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 44px 36px;border-top:1px solid var(--border);margin-top:8px;
}
.article-tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;background:var(--surface-soft);border:1px solid var(--border);
  color:var(--ink-soft);font-size:12.5px;font-weight:500;padding:5px 14px;border-radius:20px;transition:var(--transition);
}
.tag:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-soft)}
.article-share{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-mute)}
.article-share a{
  width:34px;height:34px;border-radius:50%;background:var(--surface-soft);border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:14px;
}
.article-share a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* ===== 侧栏 ===== */
.article-aside{display:flex;flex-direction:column;gap:22px}
.aside-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:24px;box-shadow:var(--shadow-sm);
}
.aside-card h3{font-size:16px;font-weight:700;margin-bottom:8px;display:flex;align-items:center;gap:8px}
.aside-card h3::before{content:'';width:3px;height:16px;background:var(--primary);border-radius:2px;display:inline-block}
.aside-card p{font-size:13px;color:var(--ink-soft);line-height:1.65}
.aside-list{display:flex;flex-direction:column;gap:14px;margin-top:14px}
.aside-list li{padding-bottom:14px;border-bottom:1px dashed var(--border)}
.aside-list li:last-child{border-bottom:none;padding-bottom:0}
.aside-list a{display:flex;flex-direction:column;gap:4px}
.aside-cat{font-size:11.5px;color:var(--primary);font-weight:600;text-transform:uppercase;letter-spacing:.4px}
.aside-title{font-size:13.8px;font-weight:600;color:var(--ink);line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.aside-list a:hover .aside-title{color:var(--primary)}
.aside-list time{font-size:12px;color:var(--ink-mute)}
.subscribe-card{background:linear-gradient(150deg,#15151E,#1A1420);border-color:rgba(255,255,255,.06)}
.subscribe-card h3{color:#F2F3F7}
.subscribe-card h3::before{background:var(--primary-hover)}
.subscribe-card p{color:#9DA0AE}
.subscribe-form{display:flex;flex-direction:column;gap:10px;margin-top:14px}
.subscribe-form input{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:9px;padding:11px 14px;
  color:#F2F3F7;font-size:14px;transition:var(--transition);
}
.subscribe-form input:focus{border-color:var(--primary);background:rgba(255,255,255,.1)}
.subscribe-form input::placeholder{color:#6F7480}
.subscribe-form button{background:var(--primary);color:#fff;border-radius:9px;padding:11px;font-size:14px;font-weight:600;cursor:pointer;transition:var(--transition)}
.subscribe-form button:hover{background:var(--primary-hover);transform:translateY(-1px)}

/* ===== 相关推荐 ===== */
.related-section{padding:52px 0 20px}
.section-header{text-align:center;margin-bottom:36px}
.section-eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:1.5px;color:var(--primary);
  background:var(--primary-soft);padding:5px 15px;border-radius:20px;margin-bottom:10px;
}
.section-header h2{font-size:28px;font-weight:800;letter-spacing:.5px;margin-bottom:8px}
.section-header>p{color:var(--ink-mute);font-size:14px;max-width:560px;margin:0 auto}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.content-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:var(--transition);display:flex;flex-direction:column;
}
.content-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--border-strong)}
.card-img{aspect-ratio:16/10;overflow:hidden;position:relative;display:block}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.content-card:hover .card-img img{transform:scale(1.06)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1}
.card-tag{
  align-self:flex-start;font-size:11.5px;font-weight:600;color:var(--primary);background:var(--primary-soft);
  padding:3px 11px;border-radius:14px;margin-bottom:10px;
}
.card-body h3{font-size:16px;font-weight:700;line-height:1.45;margin-bottom:8px}
.card-body h3 a{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body h3 a:hover{color:var(--primary)}
.card-body>p{font-size:13px;color:var(--ink-soft);line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:14px;flex:1}
.card-body time{font-size:12px;color:var(--ink-mute);display:flex;align-items:center;gap:6px}
.card-body time i{font-size:12px}

/* ===== CTA ===== */
.cta-band{
  margin:52px 0 0;padding:70px 0;position:relative;
  background:linear-gradient(135deg,rgba(13,13,19,.93) 0%,rgba(95,10,25,.85) 60%,rgba(200,16,46,.65) 100%),url('/assets/images/backpic/back-3.png') center/cover no-repeat fixed;
  color:#fff;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-content{flex:1;min-width:280px}
.cta-badge{
  display:inline-flex;align-items:center;gap:7px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);
  color:#FFD3D9;font-size:12.5px;font-weight:600;padding:6px 15px;border-radius:20px;margin-bottom:14px;
}
.cta-content h2{font-size:clamp(22px,2.8vw,32px);font-weight:800;line-height:1.35;margin-bottom:12px;letter-spacing:.5px}
.cta-content p{color:rgba(255,255,255,.75);font-size:14.5px;max-width:480px}
.cta-form{display:flex;gap:10px;width:min(480px,100%)}
.cta-form input{
  flex:1;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);border-radius:11px;
  padding:14px 18px;color:#fff;font-size:14.5px;backdrop-filter:blur(6px);transition:var(--transition);
}
.cta-form input:focus{border-color:var(--primary-hover);background:rgba(255,255,255,.14)}
.cta-form input::placeholder{color:rgba(255,255,255,.5)}
.cta-form button{
  background:var(--primary);color:#fff;border-radius:11px;padding:14px 26px;font-size:14.5px;font-weight:700;
  cursor:pointer;white-space:nowrap;transition:var(--transition);box-shadow:0 6px 20px rgba(200,16,46,.4);
}
.cta-form button:hover{background:var(--primary-hover);transform:translateY(-2px)}

/* ===== FAQ ===== */
.faq-section{padding:60px 0 30px}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;max-width:960px;margin:0 auto}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:24px 26px;transition:var(--transition);position:relative;
}
.faq-item:hover{box-shadow:var(--shadow-md);border-color:var(--border-strong);transform:translateY(-2px)}
.faq-item h3{font-size:15.5px;font-weight:700;margin-bottom:10px;display:flex;align-items:flex-start;gap:10px}
.faq-item h3::before{
  content:'Q';flex-shrink:0;width:24px;height:24px;border-radius:8px;background:var(--primary-soft);
  color:var(--primary);font-size:12px;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:1px;
}
.faq-item p{font-size:13.5px;color:var(--ink-soft);line-height:1.75;padding-left:34px}

/* ===== 页脚 ===== */
.site-footer{background:#0A0A0F;color:#8E929E;padding:54px 0 26px;margin-top:40px}
.footer-top{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.07)}
.footer-brand{max-width:380px}
.footer-brand h3{color:#F2F3F7;font-size:20px;font-weight:800;margin-bottom:12px;letter-spacing:.5px}
.footer-brand p{font-size:13.5px;line-height:1.75;color:#7B7F8B}
.footer-links{display:flex;flex-direction:column;gap:12px;min-width:160px}
.footer-links h4{color:#F2F3F7;font-size:15px;font-weight:700;margin-bottom:8px}
.footer-links a{font-size:14px;color:#9DA0AE;padding:2px 0;transition:var(--transition)}
.footer-links a:hover{color:var(--primary-hover);padding-left:4px}
.footer-bottom{padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:#6F7480}
.footer-bottom a{color:#9DA0AE}
.footer-bottom a:hover{color:#fff}

/* ===== 未找到 ===== */
.not-found{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:80px 40px;text-align:center;box-shadow:var(--shadow-sm);
}
.not-found-icon{
  width:64px;height:64px;border-radius:50%;background:var(--primary-soft);color:var(--primary);
  display:inline-flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px;
}
.not-found h2{font-size:24px;font-weight:800;margin-bottom:10px}
.not-found p{color:var(--ink-soft);font-size:14px;margin-bottom:24px}
.empty-tip{grid-column:1/-1;text-align:center;padding:40px 20px;color:var(--ink-mute);font-size:14px;background:var(--surface);border:1px dashed var(--border-strong);border-radius:var(--radius-lg)}

/* ===== 响应式 ===== */
@media (max-width:1024px){
  .site-sidebar{
    position:sticky;top:0;bottom:auto;width:100%;height:auto;border-right:none;border-bottom:1px solid rgba(255,255,255,.08);
    background:linear-gradient(180deg,#0D0D13,#141420);
  }
  .sidebar-inner{flex-direction:row;align-items:center;flex-wrap:wrap;padding:12px 20px;gap:8px;overflow:visible}
  .brand{margin:0;padding:0 8px 0 0;border-bottom:none}
  .brand-mark{width:36px;height:36px;font-size:17px;border-radius:10px}
  .brand-text{font-size:15px}
  .side-nav{flex-direction:row;align-items:center;gap:2px;margin-left:auto;overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none}
  .side-nav::-webkit-scrollbar{display:none}
  .nav-link{padding:8px 12px;font-size:13.5px;white-space:nowrap;border-radius:8px}
  .nav-link i{font-size:13px}
  .side-card{display:none}
  .site-main{margin-left:0}
  .article-grid{grid-template-columns:1fr;gap:28px}
  .article-aside{flex-direction:row;align-items:stretch;overflow-x:auto;padding-bottom:4px}
  .article-aside .aside-card{min-width:280px;flex:1}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .container{width:min(100% - 28px,var(--container))}
  .article-hero{padding:52px 0 46px}
  .article-body{padding:28px 22px 16px}
  .article-footer{padding:18px 22px 28px}
  .hero-meta{gap:12px;flex-wrap:wrap}
  .related-grid{grid-template-columns:1fr;gap:18px}
  .faq-grid{grid-template-columns:1fr;gap:14px}
  .cta-band{padding:54px 0;background-attachment:scroll}
  .cta-inner{flex-direction:column;gap:28px}
  .cta-form{width:100%;flex-direction:column}
  .cta-form button{width:100%}
  .footer-top{flex-direction:column;gap:28px}
  .brand-text{display:none}
  .sidebar-inner{padding:10px 14px}
  .side-nav{margin-left:0;flex:1}
  .nav-link{padding:7px 10px;font-size:12.8px}
}
@media (max-width:520px){
  .article-grid{gap:22px}
  .article-body{font-size:15px;line-height:1.8}
  .article-body blockquote{padding:14px 16px}
  .related-grid{grid-template-columns:1fr}
  .section-header h2{font-size:23px}
  .faq-item{padding:20px 18px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .brand-mark{width:32px;height:32px;font-size:15px}
  .article-footer{flex-direction:column;align-items:flex-start}
}

/* roulang page: category1 */
:root {
  --primary: #c8102e;
  --primary-dark: #9a0d24;
  --primary-light: #fef0f2;
  --accent: #d4a643;
  --dark: #151a22;
  --dark-2: #1e2532;
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1e2532;
  --text-muted: #64748b;
  --border: #e6e8ec;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow: 0 4px 20px rgba(21, 26, 34, .06);
  --shadow-lg: 0 14px 42px rgba(21, 26, 34, .12);
  --sidebar-w: 260px;
  --transition: .25s ease;
}

*, *::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", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

button, input {
  font-family: inherit;
  font-size: inherit;
}

:focus-visible {
  outline: 3px solid rgba(200, 16, 46, .45);
  outline-offset: 2px;
  border-radius: 4px;
}

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 32px 40px 48px;
}

.main-content {
  margin-left: var(--sidebar-w);
  min-height: 100vh;
  background: var(--bg);
}

.site-footer {
  margin-left: var(--sidebar-w);
  background: var(--dark);
  color: #9aa5b5;
  border-top: 1px solid rgba(255, 255, 255, .06);
}

.site-footer .container {
  padding-top: 52px;
  padding-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .25s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn i {
  font-size: 14px;
}

.btn-sm {
  padding: 9px 16px;
  font-size: 13px;
}

.btn-lg {
  padding: 14px 26px;
  font-size: 15px;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(200, 16, 46, .28);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(200, 16, 46, .36);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-light {
  background: #fff;
  color: #151a22;
  box-shadow: 0 6px 18px rgba(0, 0, 0, .16);
}

.btn-light:hover {
  background: #f0f1f3;
  transform: translateY(-2px);
}

.btn-outline-light {
  border-color: rgba(255, 255, 255, .65);
  color: #fff;
  background: transparent;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, .14);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
  font-size: 13px;
}

.btn-ghost:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== 左侧导航 ===== */
.site-sidebar {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: var(--sidebar-w);
  background: var(--dark);
  z-index: 1000;
  overflow-y: auto;
}

.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 26px 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 6px 22px;
  margin-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 19px;
  box-shadow: 0 5px 14px rgba(200, 16, 46, .38);
  flex-shrink: 0;
}

.brand-text {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .4px;
  line-height: 1.3;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 18px;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 11px;
  color: #9aa5b5;
  font-size: 14px;
  font-weight: 500;
  transition: all .25s ease;
  white-space: nowrap;
}

.nav-link i {
  width: 20px;
  text-align: center;
  font-size: 15px;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, .06);
}

.nav-link.active {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 6px 16px rgba(200, 16, 46, .32);
}

.side-card {
  margin-top: auto;
  background: linear-gradient(150deg, rgba(200, 16, 46, .2), rgba(200, 16, 46, .05));
  border: 1px solid rgba(200, 16, 46, .24);
  border-radius: 14px;
  padding: 18px 16px;
}

.side-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: #f2b0bc;
  background: rgba(200, 16, 46, .18);
  border-radius: 999px;
  padding: 5px 12px;
  margin-bottom: 10px;
}

.side-card h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 6px;
}

.side-card p {
  color: #9aa5b5;
  font-size: 12px;
  line-height: 1.6;
  margin-bottom: 14px;
}

/* ===== 页面 Hero ===== */
.page-hero {
  position: relative;
  border-radius: var(--radius);
  padding: 52px 46px;
  margin-bottom: 36px;
  background: linear-gradient(115deg, rgba(21, 26, 34, .94) 8%, rgba(21, 26, 34, .7) 55%, rgba(200, 16, 46, .42)), url('/assets/images/backpic/back-1.png') center/cover;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero-content {
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .4px;
  background: rgba(255, 255, 255, .12);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px;
  padding: 7px 16px;
  margin-bottom: 20px;
}

.hero-badge i {
  color: var(--accent);
}

.page-hero h1 {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1px;
  margin-bottom: 14px;
}

.page-hero p {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .82);
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-stats {
  display: flex;
  gap: 14px;
  flex-shrink: 0;
}

.hero-stat {
  min-width: 96px;
  padding: 18px 12px;
  border-radius: 14px;
  text-align: center;
  background: rgba(255, 255, 255, .09);
  border: 1px solid rgba(255, 255, 255, .14);
  backdrop-filter: blur(4px);
}

.hero-stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.hero-stat span {
  font-size: 12px;
  color: rgba(255, 255, 255, .72);
}

/* ===== 话题标签 ===== */
.topic-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  transition: all .22s ease;
  white-space: nowrap;
}

.tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.tag.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(200, 16, 46, .3);
}

/* ===== 板块标题 ===== */
.section-block {
  margin-bottom: 56px;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 26px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.section-head h2 {
  font-size: 28px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.5px;
  color: var(--text);
}

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

.news-card {
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  transition: all .3s ease;
  overflow: hidden;
}

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

.news-card-link {
  display: block;
  height: 100%;
}

.news-thumb {
  position: relative;
  display: block;
  overflow: hidden;
  height: 172px;
  background: var(--dark-2);
}

.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}

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

.news-tag {
  position: absolute;
  left: 14px;
  bottom: 12px;
  background: rgba(21, 26, 34, .86);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
  letter-spacing: .3px;
}

.news-body {
  display: block;
  padding: 20px 20px 22px;
}

.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.news-meta i {
  margin-right: 4px;
}

.news-title {
  display: block;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--text);
  margin-bottom: 8px;
  transition: color .2s ease;
}

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

.news-desc {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.news-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
}

.news-more i {
  transition: transform .2s ease;
}

.news-card:hover .news-more i {
  transform: translateX(3px);
}

/* ===== 焦点资讯 ===== */
.featured-section {
  margin-bottom: 56px;
}

.featured-card {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  box-shadow: var(--shadow);
  transition: box-shadow .3s ease;
}

.featured-card:hover {
  box-shadow: var(--shadow-lg);
}

.featured-img {
  min-height: 320px;
  overflow: hidden;
}

.featured-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}

.featured-card:hover .featured-img img {
  transform: scale(1.04);
}

.featured-body {
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  width: fit-content;
  font-size: 12px;
  font-weight: 700;
  color: #8a6a1a;
  background: #fdf6e3;
  border: 1px solid #eed9a8;
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 18px;
}

.featured-body h2 {
  font-size: 24px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 14px;
  letter-spacing: -.3px;
}

.featured-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.featured-meta {
  display: flex;
  gap: 20px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.featured-meta i {
  margin-right: 5px;
  color: var(--primary);
}

/* ===== 数据统计 ===== */
.stats-section {
  margin-bottom: 56px;
  border-radius: var(--radius);
  padding: 48px 44px;
  background: linear-gradient(125deg, rgba(21, 26, 34, .94), rgba(21, 26, 34, .84)), url('/assets/images/backpic/back-2.png') center/cover;
  color: #fff;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  background: rgba(255, 255, 255, .05);
  border: 1px solid rgba(255, 255, 255, .09);
  border-radius: 14px;
  padding: 26px 18px;
  text-align: center;
  transition: all .25s ease;
}

.stat-card:hover {
  background: rgba(255, 255, 255, .09);
  transform: translateY(-4px);
}

.stat-num {
  display: block;
  font-size: 38px;
  font-weight: 800;
  line-height: 1.2;
  color: var(--accent);
  margin-bottom: 4px;
}

.stat-label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.stat-card p {
  font-size: 12px;
  color: rgba(255, 255, 255, .55);
  line-height: 1.5;
}

/* ===== 时间线 ===== */
.timeline-section {
  margin-bottom: 56px;
}

.timeline {
  position: relative;
  padding-left: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 6px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  border-radius: 2px;
}

.timeline-item {
  position: relative;
  padding-bottom: 30px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.tl-dot {
  position: absolute;
  left: -32px;
  top: 7px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--primary), 0 4px 10px rgba(200, 16, 46, .3);
}

.tl-content {
  background: var(--card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  padding: 20px 22px;
  transition: all .25s ease;
}

.tl-content:hover {
  box-shadow: var(--shadow);
  border-color: rgba(200, 16, 46, .25);
}

.tl-date {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-light);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: 10px;
}

.tl-content h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
}

.tl-content p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-section {
  margin-bottom: 56px;
}

.faq-list {
  max-width: 820px;
}

.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all .25s ease;
}

.faq-item:hover {
  border-color: rgba(200, 16, 46, .28);
}

.faq-item[open] {
  box-shadow: var(--shadow);
  border-color: rgba(200, 16, 46, .25);
}

.faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

.faq-item summary i {
  color: var(--primary);
  font-size: 16px;
}

.faq-item summary::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 12px;
  margin-left: auto;
  color: var(--text-muted);
  transition: transform .3s ease;
}

.faq-item[open] summary::after {
  transform: rotate(180deg);
}

.faq-item p {
  padding: 0 20px 20px 48px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}

/* ===== CTA 订阅 ===== */
.cta-section {
  margin-bottom: 24px;
}

.cta-card {
  border-radius: var(--radius);
  background: linear-gradient(120deg, #171c26, #222a38);
  border: 1px solid rgba(255, 255, 255, .08);
  padding: 46px 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.cta-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 700;
  color: var(--accent);
  background: rgba(212, 166, 67, .12);
  border: 1px solid rgba(212, 166, 67, .3);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 14px;
}

.cta-copy h2 {
  color: #fff;
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -.3px;
}

.cta-copy p {
  color: rgba(255, 255, 255, .65);
  font-size: 14px;
}

.cta-form {
  display: flex;
  gap: 12px;
  min-width: 430px;
}

.input-group {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  border-radius: 11px;
  padding: 0 14px;
  flex: 1;
  border: 2px solid transparent;
  transition: all .25s ease;
}

.input-group:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(200, 16, 46, .12);
}

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

.input-group input {
  border: none;
  outline: none;
  background: transparent;
  padding: 13px 0;
  flex: 1;
  font-size: 14px;
  color: var(--text);
  min-width: 0;
}

/* ===== 页脚 ===== */
.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}

.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 13px;
  line-height: 1.8;
  max-width: 420px;
  color: rgba(255, 255, 255, .6);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 6px;
}

.footer-links a {
  color: rgba(255, 255, 255, .6);
  font-size: 13px;
  transition: color .2s ease;
}

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

.footer-bottom {
  padding-top: 22px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .45);
}

.footer-bottom a {
  color: rgba(255, 255, 255, .6);
  transition: color .2s ease;
}

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

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container {
    padding-left: 28px;
    padding-right: 28px;
  }

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

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

  .hero-stat {
    min-width: 80px;
    padding: 14px 12px;
  }

  .cta-form {
    min-width: 0;
    flex-direction: column;
  }

  .cta-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 768px) {
  .site-sidebar {
    width: 100%;
    height: auto;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: auto;
    background: rgba(21, 26, 34, .97);
    backdrop-filter: blur(12px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, .25);
    overflow: visible;
    z-index: 1000;
  }

  .sidebar-inner {
    flex-direction: row;
    align-items: center;
    padding: 12px 16px;
    height: auto;
    gap: 12px;
  }

  .brand {
    padding: 0;
    margin: 0;
    border-bottom: none;
    flex-shrink: 0;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
    font-size: 16px;
    border-radius: 9px;
  }

  .brand-text {
    font-size: 14px;
  }

  .side-nav {
    flex-direction: row;
    flex: 1;
    margin: 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    gap: 4px;
  }

  .side-nav::-webkit-scrollbar {
    display: none;
  }

  .nav-link {
    padding: 9px 12px;
    font-size: 13px;
    flex-shrink: 0;
  }

  .nav-link i {
    font-size: 13px;
  }

  .side-card {
    display: none;
  }

  .main-content {
    margin-left: 0;
    margin-top: 62px;
  }

  .site-footer {
    margin-left: 0;
  }

  .container {
    padding: 24px 18px 36px;
  }

  .page-hero {
    flex-direction: column;
    align-items: flex-start;
    padding: 34px 26px;
  }

  .page-hero h1 {
    font-size: 32px;
  }

  .page-hero p {
    font-size: 15px;
  }

  .hero-stats {
    flex-direction: row;
    width: 100%;
    gap: 10px;
  }

  .hero-stat {
    flex: 1;
    padding: 14px 8px;
  }

  .hero-stat strong {
    font-size: 22px;
  }

  .hero-stat span {
    font-size: 11px;
  }

  .topic-tags {
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 10px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .topic-tags::-webkit-scrollbar {
    display: none;
  }

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

  .featured-card {
    grid-template-columns: 1fr;
  }

  .featured-img {
    min-height: 210px;
  }

  .featured-body {
    padding: 28px 24px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .stats-section {
    padding: 32px 24px;
  }

  .stat-num {
    font-size: 30px;
  }

  .cta-card {
    padding: 32px 24px;
  }

  .cta-copy h2 {
    font-size: 22px;
  }

  .footer-top {
    flex-direction: column;
    gap: 28px;
  }

  .footer-links {
    flex-direction: row;
    flex-wrap: wrap;
  }
}

@media (max-width: 520px) {
  .brand-text {
    display: none;
  }

  .page-hero {
    padding: 28px 20px;
    border-radius: 14px;
  }

  .page-hero h1 {
    font-size: 28px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-stats {
    gap: 6px;
  }

  .hero-stat {
    padding: 11px 6px;
  }

  .hero-stat strong {
    font-size: 20px;
  }

  .hero-stat span {
    font-size: 10px;
  }

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

  .news-thumb {
    height: 190px;
  }

  .featured-meta {
    flex-direction: column;
    gap: 6px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .stat-card {
    padding: 20px 12px;
  }

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

  .cta-form {
    width: 100%;
  }

  .input-group {
    width: 100%;
  }

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

  .footer-bottom p {
    line-height: 1.7;
  }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
  --primary: #C8102E;
  --primary-dark: #A00D24;
  --primary-light: #FF4D6A;
  --secondary: #12121E;
  --secondary-light: #1E1E32;
  --accent: #E8B923;
  --accent-soft: rgba(232,185,35,0.15);
  --bg: #F7F7FB;
  --surface: #FFFFFF;
  --text: #14141F;
  --muted: #6B7280;
  --border: #E5E7EB;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow: 0 8px 30px rgba(0,0,0,0.08);
  --shadow-lg: 0 20px 50px rgba(0,0,0,0.12);
  --transition: all .3s cubic-bezier(.4,0,.2,1);
  --sidebar-width: 280px;
}

/* ===== 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: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; }

/* ===== 容器 ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(200,16,46,0.28);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(200,16,46,0.35);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.65);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}
.btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

/* ===== 左侧导航 ===== */
.site-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--secondary);
  color: #fff;
  z-index: 1000;
  padding: 26px 20px;
  overflow-y: auto;
}
.sidebar-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 480px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 4px 22px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  margin-bottom: 22px;
  transition: var(--transition);
}
.brand:hover .brand-mark { transform: rotate(-6deg) scale(1.05); }
.brand-mark {
  width: 44px;
  height: 44px;
  background: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 22px;
  color: #fff;
  box-shadow: 0 6px 16px rgba(200,16,46,0.35);
  transition: var(--transition);
  flex-shrink: 0;
}
.brand-text {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.3;
}
.side-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.72);
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition);
  border: 1px solid transparent;
}
.nav-link i {
  width: 20px;
  text-align: center;
  font-size: 16px;
}
.nav-link:hover {
  background: rgba(255,255,255,0.07);
  color: #fff;
  transform: translateX(2px);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(200,16,46,0.3);
}
.side-card {
  margin-top: auto;
  background: var(--secondary-light);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  padding: 20px;
}
.side-card-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  background: rgba(200,16,46,0.24);
  color: #FF8A97;
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 12px;
  font-weight: 600;
}
.side-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
  color: #fff;
}
.side-card p {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: 16px;
}

/* ===== 主内容区 ===== */
.site-main {
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Hero 横幅 ===== */
.page-hero {
  position: relative;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  padding: 110px 0 90px;
  color: #fff;
  text-align: center;
  isolation: isolate;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(18,18,30,0.82) 0%, rgba(18,18,30,0.62) 50%, rgba(200,16,46,0.3) 100%);
  z-index: -1;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 6px 18px;
  border-radius: 40px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin-bottom: 22px;
}
.hero-badge i { color: var(--accent); }
.page-hero h1 {
  font-size: clamp(30px, 4.5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}
.page-hero .lead {
  font-size: clamp(15px, 1.4vw, 18px);
  color: rgba(255,255,255,0.85);
  max-width: 680px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== 通用 Section ===== */
.section {
  padding: 80px 0;
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--primary);
  background: rgba(200,16,46,0.08);
  padding: 5px 16px;
  border-radius: 30px;
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-header h2 {
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 12px;
}
.section-header p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

/* ===== 分类简介 ===== */
.cat-intro {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.intro-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 60px;
  align-items: center;
}
.intro-content h2 {
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}
.intro-content p {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.9;
  margin-bottom: 12px;
}
.intro-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.stat-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px 14px;
  text-align: center;
  transition: var(--transition);
}
.stat-box:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(200,16,46,0.3);
}
.stat-box .num {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.stat-box .label {
  font-size: 13px;
  color: var(--muted);
  margin-top: 6px;
  font-weight: 500;
}

/* ===== 攻略卡片 ===== */
.guide-list {
  background: var(--bg);
}
.guide-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.guide-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.guide-card .card-media {
  position: relative;
  height: 160px;
  overflow: hidden;
}
.guide-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.guide-card:hover .card-media img {
  transform: scale(1.06);
}
.card-media .card-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(18,18,30,0.78);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,0.15);
}
.card-body {
  padding: 22px 20px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card-body h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  line-height: 1.4;
  transition: var(--transition);
}
.guide-card:hover .card-body h3 { color: var(--primary); }
.card-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}
.card-link {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}
.card-link:hover { gap: 12px; color: var(--primary-dark); }

/* ===== 分步教程 ===== */
.steps-section {
  background: var(--secondary);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.steps-section::before {
  content: '';
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  background: rgba(200,16,46,0.18);
  border-radius: 50%;
  filter: blur(60px);
}
.steps-section .section-tag {
  background: rgba(200,16,46,0.25);
  color: #FF8A97;
}
.steps-section .section-header h2 { color: #fff; }
.steps-section .section-header p { color: rgba(255,255,255,0.65); }
.steps-layout {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.step-item {
  display: flex;
  gap: 20px;
  padding: 24px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
}
.step-item:hover {
  background: rgba(255,255,255,0.09);
  transform: translateX(4px);
}
.step-num {
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  min-width: 48px;
  font-style: italic;
}
.step-body h3 {
  font-size: 17px;
  margin-bottom: 6px;
  color: #fff;
}
.step-body p {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.7;
  margin: 0;
}
.steps-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.1);
}
.steps-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 320px;
}

/* ===== 移动端亮点 ===== */
.features-section {
  background: var(--surface);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  text-align: center;
  transition: var(--transition);
}
.feature-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow);
  border-color: rgba(200,16,46,0.25);
}
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(200,16,46,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 22px;
  color: var(--primary);
  transition: var(--transition);
}
.feature-item:hover .feature-icon {
  background: var(--primary);
  color: #fff;
  transform: scale(1.06);
}
.feature-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-item p {
  font-size: 13.5px;
  color: var(--muted);
  line-height: 1.7;
  margin: 0;
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg);
}
.faq-grid {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-sm);
  border-color: rgba(200,16,46,0.2);
}
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15.5px;
  color: var(--text);
  list-style: none;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
  color: var(--primary);
  font-size: 14px;
  transition: transform .3s ease;
  flex-shrink: 0;
}
.faq-item[open] summary i {
  transform: rotate(180deg);
}
.faq-item[open] summary {
  color: var(--primary);
}
.faq-answer {
  padding: 0 24px 20px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

/* ===== CTA ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::after {
  content: '';
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 200px;
  height: 200px;
  background: rgba(255,255,255,0.08);
  border-radius: 50%;
}
.cta-inner {
  max-width: 620px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-inner p {
  font-size: 15.5px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  line-height: 1.8;
}
.cta-section .btn {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}
.cta-section .btn:hover {
  background: var(--accent);
  color: var(--secondary);
  transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--secondary);
  color: rgba(255,255,255,0.75);
  padding: 56px 0 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand {
  max-width: 340px;
}
.footer-brand h3 {
  font-size: 18px;
  color: #fff;
  margin-bottom: 10px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-links h4 {
  font-size: 14px;
  color: #fff;
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  transition: var(--transition);
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-bottom {
  padding-top: 24px;
  text-align: center;
  font-size: 14px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom a {
  color: rgba(255,255,255,0.75);
  transition: var(--transition);
}
.footer-bottom a:hover { color: var(--accent); }

/* ===== 响应式 ===== */
@media (max-width: 1199px) {
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1024px) {
  :root { --sidebar-width: 0px; }
  .site-sidebar {
    position: sticky;
    top: 0;
    width: 100%;
    height: auto;
    padding: 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.18);
    z-index: 1000;
  }
  .sidebar-inner {
    flex-direction: row;
    align-items: center;
    gap: 16px;
    padding: 14px 20px;
    height: auto;
    min-height: 0;
  }
  .brand {
    border-bottom: none;
    padding: 0;
    margin: 0;
    flex-shrink: 0;
  }
  .brand-text { font-size: 15px; }
  .brand-mark { width: 38px; height: 38px; font-size: 18px; }
  .side-nav {
    flex-direction: row;
    overflow-x: auto;
    gap: 4px;
    flex: 1;
    scrollbar-width: none;
  }
  .side-nav::-webkit-scrollbar { display: none; }
  .nav-link {
    padding: 8px 14px;
    font-size: 14px;
    white-space: nowrap;
  }
  .nav-link:hover { transform: none; }
  .side-card { display: none; }
  .site-main { margin-left: 0; }
  .page-hero { padding: 80px 0; }
  .section { padding: 60px 0; }
}

@media (max-width: 768px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .steps-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-grid { grid-template-columns: 1fr; }
  .footer-top {
    flex-direction: column;
    gap: 28px;
  }
  .page-hero { padding: 60px 0 52px; }
  .page-hero h1 { font-size: 30px; }
}

@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .section { padding: 48px 0; }
  .features-grid { grid-template-columns: 1fr; }
  .step-item { flex-direction: row; padding: 18px; }
  .step-num { font-size: 22px; min-width: 40px; }
  .hero-actions .btn { width: 100%; }
  .intro-stats { grid-template-columns: repeat(3, 1fr); gap: 10px; }
  .stat-box { padding: 16px 8px; }
  .stat-box .num { font-size: 24px; }
  .stat-box .label { font-size: 11px; }
  .footer-top { padding-bottom: 24px; }
  .sidebar-inner { padding: 10px 12px; gap: 8px; }
  .brand-text { display: none; }
  .brand-mark { width: 34px; height: 34px; }
}

/* ===== 焦点可见性 ===== */
a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}