/* roulang page: index */
:root {
  --primary: #15244a;
  --primary-light: #233a6b;
  --primary-lighter: #2e4a8c;
  --accent: #f0a821;
  --accent-hover: #d18e12;
  --accent-soft: #fff5dd;
  --bg: #f4f6fb;
  --bg-white: #ffffff;
  --bg-dark: #0e1830;
  --text: #1a2138;
  --text-weak: #64708f;
  --border: #e6e9f0;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 12px rgba(21, 36, 74, 0.06);
  --shadow-md: 0 8px 30px rgba(21, 36, 74, 0.09);
  --shadow-lg: 0 18px 48px rgba(21, 36, 74, 0.14);
  --space-section: 96px;
  --space-card: 24px;
}

*, *::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", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

img {
  max-width: 100%;
  display: block;
  border-radius: var(--radius-md);
}

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

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

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

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

/* ===== Header & Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(21, 36, 74, 0.04);
}

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

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

.brand-logo .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--primary), var(--primary-lighter));
  color: #fff;
  font-size: 16px;
  font-weight: 800;
  border-radius: 12px;
  letter-spacing: 1px;
  box-shadow: var(--shadow-sm);
}

.brand-logo .logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.5px;
  line-height: 1.2;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav .nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--text);
  font-weight: 600;
  font-size: 14.5px;
  transition: all 0.2s ease;
  position: relative;
}

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

.main-nav .nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(21, 36, 74, 0.22);
}

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

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  background: rgba(34, 179, 120, 0.1);
  color: #1c9e63;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
}

.status-badge i {
  font-size: 8px;
  color: #22b378;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.menu-toggle {
  display: none;
  background: var(--primary);
  color: #fff;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: background 0.2s;
}

.menu-toggle:hover {
  background: var(--primary-light);
}

.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-md);
  padding: 20px 24px 28px;
  z-index: 99;
  flex-direction: column;
  gap: 4px;
}

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

.mobile-menu a {
  padding: 13px 16px;
  border-radius: 10px;
  font-weight: 600;
  color: var(--text);
  transition: background 0.2s;
}

.mobile-menu a:hover {
  background: var(--accent-soft);
}

.mobile-menu a.active {
  background: var(--primary);
  color: #fff;
}

.mobile-menu .btn {
  margin-top: 12px;
  text-align: center;
  justify-content: center;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14.5px;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.25s ease;
  white-space: nowrap;
  line-height: 1.4;
}

.btn-accent {
  background: linear-gradient(135deg, #ffb52e, var(--accent));
  color: #1a1a1a;
  box-shadow: 0 6px 20px rgba(240, 168, 33, 0.3);
}

.btn-accent:hover {
  background: linear-gradient(135deg, #f5a41a, var(--accent-hover));
  color: #1a1a1a;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(240, 168, 33, 0.4);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  color: #fff;
  transform: translateY(-2px);
}

.btn-primary-solid {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 18px rgba(21, 36, 74, 0.25);
}

.btn-primary-solid:hover {
  background: var(--primary-light);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(21, 36, 74, 0.3);
}

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

.btn-block {
  width: 100%;
}

.btn:focus-visible {
  outline: 3px solid rgba(240, 168, 33, 0.5);
  outline-offset: 2px;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  background-size: cover;
  background-position: center;
  min-height: 620px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(10, 18, 38, 0.88) 0%, rgba(16, 28, 55, 0.72) 55%, rgba(20, 36, 68, 0.45) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 90px 0;
  max-width: 780px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff;
  padding: 8px 20px;
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 600;
  backdrop-filter: blur(8px);
  margin-bottom: 24px;
}

.hero-badge .live-dot {
  width: 8px;
  height: 8px;
  background: #35d07f;
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(53, 208, 127, 0.25);
  animation: pulse 2s infinite;
}

.hero h1 {
  font-size: 58px;
  font-weight: 900;
  color: #fff;
  line-height: 1.12;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.hero .hero-sub {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.88);
  max-width: 620px;
  line-height: 1.8;
  margin-bottom: 34px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
  padding-top: 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.hero-stats .stat-num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}

.hero-stats .stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
  margin-top: 4px;
}

/* ===== Update Bar ===== */
.update-bar {
  background: var(--primary);
  color: #fff;
  padding: 12px 0;
  overflow: hidden;
}

.update-bar .update-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  white-space: nowrap;
}

.update-bar .update-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #1a1a1a;
  padding: 4px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  flex-shrink: 0;
}

.update-bar .update-text {
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ===== Section Common ===== */
.section-head {
  margin-bottom: 48px;
  max-width: 720px;
}

.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head .section-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-hover);
  padding: 5px 16px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 14px;
}

.section-head .section-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-head .section-desc {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.75;
}

/* ===== About / Core Info ===== */
.about-section {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-image-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-image-grid img {
  height: 240px;
  object-fit: cover;
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-image-grid img:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.about-content .about-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 18px;
}

.about-content .about-text {
  color: var(--text-weak);
  line-height: 1.85;
  font-size: 15.5px;
  margin-bottom: 18px;
}

.about-points {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 24px;
}

.about-points .point {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.6;
}

.about-points .point i {
  color: var(--accent);
  font-size: 18px;
  margin-top: 3px;
  flex-shrink: 0;
}

/* ===== Category Cards ===== */
.category-section {
  background: var(--bg);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.category-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

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

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

.category-card .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.45s ease;
}

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

.category-card .card-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(21, 36, 74, 0.25), transparent 60%);
}

.category-card .card-body {
  padding: 26px 24px 30px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.category-card .card-body h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}

.category-card .card-body p {
  font-size: 14.5px;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}

.category-card .card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--accent-hover);
  font-size: 14px;
  transition: gap 0.2s ease;
}

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

/* ===== News Section ===== */
.news-section {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
}

.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.news-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px 28px;
  transition: box-shadow 0.25s ease, transform 0.25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.news-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  background: var(--primary);
  color: #fff;
}

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

.news-card .news-title {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-card .news-title a {
  color: var(--text);
}

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

.news-card .news-desc {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card .news-link {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--accent-hover);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 0;
  color: var(--text-weak);
  font-size: 15px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
}

/* ===== Hot List / Horizontal Scroll ===== */
.hot-section {
  background: var(--bg-dark);
  color: #fff;
  overflow: hidden;
}

.hot-section .section-head .section-title {
  color: #fff;
}

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

.hot-scroll-wrap {
  position: relative;
}

.hot-scroll {
  display: flex;
  gap: 22px;
  overflow-x: auto;
  padding: 8px 0 28px;
  scrollbar-width: thin;
  scrollbar-color: rgba(255, 255, 255, 0.3) transparent;
}

.hot-scroll::-webkit-scrollbar {
  height: 6px;
}

.hot-scroll::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.25);
  border-radius: 6px;
}

.hot-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.hot-card {
  min-width: 280px;
  max-width: 280px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform 0.3s ease, background 0.3s ease;
  flex-shrink: 0;
}

.hot-card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.13);
}

.hot-card .hot-image {
  height: 150px;
  overflow: hidden;
}

.hot-card .hot-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 0;
  transition: transform 0.4s ease;
}

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

.hot-card .hot-body {
  padding: 18px 18px 22px;
}

.hot-card .hot-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: var(--accent);
  color: #1a1a1a;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 12px;
}

.hot-card .hot-rank.rank-top {
  background: linear-gradient(135deg, #ffb52e, #ff7b2e);
}

.hot-card .hot-title {
  font-size: 15.5px;
  font-weight: 700;
  color: #fff;
  line-height: 1.5;
  margin-bottom: 6px;
}

.hot-card .hot-tagline {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.55;
}

/* ===== Stats Section ===== */
.stats-section {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.stat-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.stat-card .stat-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent-hover);
  font-size: 24px;
  border-radius: 16px;
}

.stat-card .stat-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
  margin-bottom: 8px;
}

.stat-card .stat-label {
  font-size: 14px;
  color: var(--text-weak);
}

/* ===== Process Section ===== */
.process-section {
  background: var(--bg);
}

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

.process-step {
  position: relative;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  padding: 36px 28px;
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

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

.process-step .step-num {
  width: 52px;
  height: 52px;
  margin: 0 auto 20px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(21, 36, 74, 0.2);
}

.process-step .step-icon {
  font-size: 28px;
  color: var(--accent);
  margin-bottom: 16px;
}

.process-step h3 {
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 10px;
}

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

/* ===== FAQ Section ===== */
.faq-section {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
}

.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow 0.25s ease;
}

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

.faq-item .faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 26px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  background: transparent;
  width: 100%;
  text-align: left;
}

.faq-item .faq-question i {
  color: var(--accent-hover);
  transition: transform 0.3s ease;
  font-size: 16px;
}

.faq-item.active .faq-question i {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 26px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 26px 24px;
}

.faq-item .faq-answer p {
  color: var(--text-weak);
  font-size: 14.5px;
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-lighter) 60%, #31549a 100%);
  color: #fff;
  text-align: center;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.cta-section::after {
  content: "";
  position: absolute;
  bottom: -60px;
  left: -60px;
  width: 180px;
  height: 180px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}

.cta-section .cta-inner {
  position: relative;
  z-index: 2;
  max-width: 680px;
  margin: 0 auto;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  color: #fff;
}

.cta-section p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 32px;
  line-height: 1.8;
}

.cta-section .btn-accent {
  font-size: 16px;
  padding: 14px 40px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.65);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-brand .footer-logo .logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--accent);
  color: #1a1a1a;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 800;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

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

.footer-col ul a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

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

.footer-bottom {
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

.footer-bottom .copyright {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.footer-bottom .tech-info {
  color: rgba(255, 255, 255, 0.35);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }

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

  .hero {
    min-height: 540px;
  }

  .hero h1 {
    font-size: 46px;
  }

  .about-grid {
    gap: 40px;
  }

  .category-grid {
    gap: 22px;
  }
}

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

  .container {
    padding: 0 18px;
  }

  .hero {
    min-height: 480px;
  }

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

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

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

  .hero-stats {
    gap: 28px;
  }

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

  .about-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .about-image-grid {
    order: -1;
  }

  .about-image-grid img {
    height: 180px;
  }

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

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

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

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

  .cta-section h2 {
    font-size: 28px;
  }

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

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

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

  .brand-logo .logo-mark {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }

  .header-cta .status-badge {
    display: none;
  }

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

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

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }

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

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

  .news-card {
    padding: 20px;
  }

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

  .hot-card {
    min-width: 230px;
    max-width: 230px;
  }
}

/* roulang page: category1 */
:root {
            --primary: #4f46e5;
            --primary-dark: #4338ca;
            --primary-light: #eef2ff;
            --accent: #06b6d4;
            --accent-light: #ecfeff;
            --dark: #0f172a;
            --dark-soft: #1e293b;
            --bg: #f8fafc;
            --white: #ffffff;
            --text: #1e293b;
            --muted: #64748b;
            --border: #e2e8f0;
            --radius-sm: 8px;
            --radius: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.12);
            --transition: all 0.3s 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", "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%;
            height: auto;
            display: block;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header ===== */
        .site-header {
            background: var(--white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(15, 23, 42, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            height: 72px;
        }

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

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            color: var(--white);
            font-weight: 800;
            font-size: 15px;
            border-radius: 12px;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 14px rgba(79, 70, 229, 0.35);
        }

        .logo-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

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

        .nav-link {
            padding: 9px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--muted);
            border-radius: 999px;
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .nav-link.active {
            color: var(--white);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
        }

        .header-cta {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .header-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-light);
            border: 1px solid rgba(6, 182, 212, 0.2);
            padding: 6px 14px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .header-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--dark);
            color: var(--white);
            font-size: 14px;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: 999px;
            transition: var(--transition);
            white-space: nowrap;
        }

        .header-btn:hover {
            background: var(--primary);
            color: var(--white);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.3);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--dark);
            cursor: pointer;
            transition: var(--transition);
        }

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

        /* ===== Banner Hero ===== */
        .page-banner {
            position: relative;
            padding: 110px 0 100px;
            background: linear-gradient(135deg, rgba(15, 23, 42, 0.82) 0%, rgba(79, 70, 229, 0.65) 70%, rgba(6, 182, 212, 0.35) 100%),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: var(--white);
        }

        .banner-inner {
            max-width: 760px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 24px;
        }

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

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

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

        .breadcrumb .current {
            color: var(--white);
            font-weight: 500;
        }

        .page-banner h1 {
            font-size: 46px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: 1px;
        }

        .page-banner h1 span {
            color: #7dd3fc;
        }

        .banner-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 36px;
            max-width: 620px;
        }

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

        .btn-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--white);
            color: var(--dark);
            font-weight: 700;
            font-size: 15px;
            padding: 14px 32px;
            border-radius: 999px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
            color: var(--primary);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--white);
            font-weight: 600;
            font-size: 15px;
            padding: 13px 30px;
            border-radius: 999px;
            border: 2px solid rgba(255, 255, 255, 0.5);
            transition: var(--transition);
            cursor: pointer;
        }

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

        .banner-meta {
            display: flex;
            gap: 28px;
            margin-top: 48px;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            flex-wrap: wrap;
        }

        .banner-meta-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.85);
        }

        .banner-meta-item i {
            color: #7dd3fc;
            font-size: 16px;
        }

        /* ===== Section Common ===== */
        .section {
            padding: 90px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 660px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            padding: 6px 18px;
            border-radius: 999px;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--muted);
            line-height: 1.7;
        }

        /* ===== Steps ===== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-card {
            background: var(--white);
            border-radius: var(--radius);
            padding: 36px 28px;
            position: relative;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(79, 70, 229, 0.25);
        }

        .step-num {
            font-size: 48px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 2px var(--primary);
            opacity: 0.8;
            line-height: 1;
            margin-bottom: 20px;
            display: block;
        }

        .step-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 28px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: var(--white);
            box-shadow: 0 8px 20px rgba(79, 70, 229, 0.25);
        }

        .step-card h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 12px;
        }

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

        /* ===== Content Cards ===== */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

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

        .guide-card-media {
            position: relative;
            overflow: hidden;
            padding-top: 60%;
        }

        .guide-card-media img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .card-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(15, 23, 42, 0.85);
            color: var(--white);
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

        .card-tag.hot {
            background: rgba(225, 29, 72, 0.9);
        }

        .guide-card-body {
            padding: 26px 24px 28px;
        }

        .guide-card-body h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--dark);
            line-height: 1.45;
            margin-bottom: 12px;
            transition: var(--transition);
        }

        .guide-card-body h3 a {
            color: var(--dark);
        }

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

        .guide-card-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }

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

        .card-link i {
            font-size: 13px;
            transition: transform 0.3s ease;
        }

        .card-link:hover {
            color: var(--primary-dark);
        }

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

        /* ===== Top List ===== */
        .toplist-section {
            background: linear-gradient(135deg, var(--dark) 0%, #1e1b4b 100%);
            position: relative;
            overflow: hidden;
        }

        .toplist-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(79, 70, 229, 0.3) 0%, transparent 70%);
            border-radius: 50%;
        }

        .toplist-section .section-head h2 {
            color: var(--white);
        }

        .toplist-section .section-head p {
            color: rgba(255, 255, 255, 0.6);
        }

        .toplist-section .section-tag {
            background: rgba(255, 255, 255, 0.12);
            color: #a5b4fc;
        }

        .toplist-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .toplist-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 16px;
            padding: 18px 24px;
            margin-bottom: 14px;
            backdrop-filter: blur(8px);
            transition: var(--transition);
            cursor: pointer;
        }

        .toplist-item:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateX(6px);
            border-color: rgba(165, 180, 252, 0.4);
        }

        .toplist-rank {
            font-size: 28px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1.5px #a5b4fc;
            min-width: 48px;
            text-align: center;
        }

        .toplist-rank.top-1 {
            color: #fbbf24;
            -webkit-text-stroke: 0;
        }

        .toplist-rank.top-2 {
            color: #cbd5e1;
            -webkit-text-stroke: 0;
        }

        .toplist-rank.top-3 {
            color: #f59e0b;
            -webkit-text-stroke: 0;
        }

        .toplist-info {
            flex: 1;
        }

        .toplist-info h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--white);
            margin-bottom: 4px;
        }

        .toplist-info p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .toplist-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            white-space: nowrap;
        }

        .toplist-meta .views {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .toplist-meta .views i {
            font-size: 14px;
            color: #a5b4fc;
        }

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

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

        .faq-item:hover {
            border-color: rgba(79, 70, 229, 0.3);
            box-shadow: var(--shadow);
        }

        .faq-item summary {
            padding: 24px 28px;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            line-height: 1.5;
            list-style: none;
        }

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

        .faq-item summary::after {
            content: '\f107';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 18px;
            color: var(--primary);
            transition: transform 0.35s ease;
            flex-shrink: 0;
        }

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

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

        .faq-answer {
            padding: 0 28px 24px;
            font-size: 15px;
            color: var(--muted);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 0 0 90px;
        }

        .cta-box {
            position: relative;
            border-radius: var(--radius-lg);
            padding: 72px 60px;
            text-align: center;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.92) 0%, rgba(6, 182, 212, 0.85) 100%),
                url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: var(--white);
            box-shadow: 0 24px 60px rgba(79, 70, 229, 0.35);
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 32px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--white);
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            padding: 15px 40px;
            border-radius: 999px;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .cta-btn:hover {
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.2);
            color: var(--primary-dark);
        }

        .cta-btn i {
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.65);
            padding: 72px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-logo .logo-mark {
            width: 40px;
            height: 40px;
            font-size: 14px;
            border-radius: 10px;
        }

        .footer-logo span {
            font-size: 18px;
            font-weight: 700;
            color: var(--white);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 340px;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 99px;
        }

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

        .footer-col ul a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: var(--transition);
        }

        .footer-col ul a:hover {
            color: var(--white);
            padding-left: 6px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
        }

        .copyright {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .tech-info {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.3);
            letter-spacing: 1px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .page-banner h1 {
                font-size: 38px;
            }
            .header-badge {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                position: sticky;
            }
            .header-inner {
                height: 64px;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--white);
                flex-direction: column;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
                gap: 8px;
                align-items: stretch;
                border-radius: 0 0 20px 20px;
            }
            .main-nav.open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                text-align: center;
                padding: 12px;
            }
            .mobile-toggle {
                display: inline-flex;
            }
            .header-btn {
                display: none;
            }
            .page-banner {
                padding: 80px 0;
            }
            .page-banner h1 {
                font-size: 32px;
            }
            .banner-desc {
                font-size: 15px;
            }
            .section {
                padding: 64px 0;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .cta-box {
                padding: 48px 28px;
                border-radius: var(--radius);
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .toplist-item {
                padding: 16px;
                flex-wrap: wrap;
                gap: 14px;
            }
            .toplist-meta {
                width: 100%;
                padding-left: 68px;
            }
            .banner-actions {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-light,
            .btn-outline-light {
                justify-content: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo-text {
                font-size: 16px;
            }
            .logo-mark {
                width: 36px;
                height: 36px;
                font-size: 13px;
            }
            .page-banner h1 {
                font-size: 26px;
            }
            .section-head h2 {
                font-size: 23px;
            }
            .section-head p {
                font-size: 14px;
            }
            .guide-card-body {
                padding: 20px 18px;
            }
            .guide-card-body h3 {
                font-size: 16px;
            }
            .step-card {
                padding: 28px 22px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
  --primary: #3d5afe;
  --primary-600: #2a46e0;
  --primary-100: #eef0ff;
  --accent: #ffb020;
  --accent-600: #f59e0b;
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-alt: #eef2fd;
  --text: #0f1832;
  --text-muted: #5b6b82;
  --text-light: #8f9bb0;
  --border: #e3e8f0;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-xs: 0 2px 6px rgba(15, 24, 50, 0.04);
  --shadow-sm: 0 4px 14px rgba(15, 24, 50, 0.08);
  --shadow: 0 12px 30px rgba(15, 24, 50, 0.12);
  --shadow-lg: 0 20px 44px rgba(15, 24, 50, 0.18);
  --header-h: 76px;
  --section-pad: 84px;
}

/* ===== 基础 reset ===== */
*,
*::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", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}
ul,
ol {
  list-style: none;
}
button,
input,
select,
textarea {
  font-family: inherit;
}

/* ===== 容器 ===== */
.container,
.grid-container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.7rem;
  border-radius: 50px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}
.btn i {
  font-size: 0.9em;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(61, 90, 254, 0.25);
}
.btn-primary:hover,
.btn-primary:focus {
  background: var(--primary-600);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(61, 90, 254, 0.35);
}
.btn-accent {
  background: var(--accent);
  color: #1c1917;
  box-shadow: 0 8px 20px rgba(255, 176, 32, 0.32);
}
.btn-accent:hover,
.btn-accent:focus {
  background: var(--accent-600);
  color: #1c1917;
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(255, 176, 32, 0.4);
}
.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}
.btn-outline:hover,
.btn-outline:focus {
  background: var(--primary-100);
  color: var(--primary-600);
}
.btn-lg {
  padding: 1.05rem 2.3rem;
  font-size: 1.02rem;
}
.btn-sm {
  padding: 0.5rem 1.15rem;
  font-size: 0.85rem;
}

/* ===== 标签/徽章 ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--primary-100);
  color: var(--primary-600);
  padding: 0.32rem 0.95rem;
  border-radius: 30px;
  font-size: 0.79rem;
  font-weight: 600;
}
.badge {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.3px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  backdrop-filter: blur(6px);
}

/* ===== 板块标题 ===== */
.section-head {
  max-width: 720px;
  margin: 0 0 2.4rem;
}
.section-head .eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1.2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 0.45rem;
}
.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}
.section-head p {
  color: var(--text-muted);
  font-size: 0.98rem;
}

/* ===== 顶栏导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 18px rgba(15, 24, 50, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 1.5rem;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  flex-shrink: 0;
}
.logo-mark {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), #7c5cfc);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.88rem;
  letter-spacing: 1px;
  box-shadow: 0 8px 20px rgba(61, 90, 254, 0.35);
}
.logo-text {
  font-size: 1.22rem;
  font-weight: 800;
  color: var(--text);
  letter-spacing: 0.2px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.nav-link {
  padding: 0.5rem 0.95rem;
  border-radius: 40px;
  font-weight: 600;
  font-size: 0.93rem;
  color: #475569;
  transition: all 0.25s ease;
  white-space: nowrap;
}
.nav-link:hover {
  background: var(--primary-100);
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(61, 90, 254, 0.32);
}
.header-cta {
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.mobile-toggle {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary-100);
  border: 1px solid var(--border);
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--primary);
  font-size: 1.05rem;
  transition: background 0.2s ease;
}
.mobile-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
}
.mobile-toggle.active {
  background: var(--primary);
  color: #fff;
}
.mobile-menu {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 14px 30px rgba(15, 24, 50, 0.12);
  padding: 0.8rem 1.2rem 1.2rem;
  display: none;
  z-index: 99;
}
.mobile-menu.open {
  display: block;
}
.mobile-menu a {
  display: block;
  padding: 0.85rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  color: var(--text);
  font-size: 0.95rem;
}
.mobile-menu a:last-child {
  border-bottom: none;
}
.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--primary);
}

/* ===== 文章 Hero ===== */
.article-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  min-height: 420px;
  padding: 70px 0 64px;
  display: flex;
  align-items: flex-end;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(10, 20, 45, 0.94) 0%, rgba(18, 34, 76, 0.78) 55%, rgba(50, 68, 140, 0.5) 100%);
}
.article-hero .container {
  position: relative;
  z-index: 2;
  width: 100%;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem;
  margin: 0 0 1.6rem;
  padding: 0;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.7);
}
.breadcrumb li {
  display: flex;
  align-items: center;
}
.breadcrumb li + li::before {
  content: "/";
  margin: 0 0.45rem;
  color: rgba(255, 255, 255, 0.38);
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.82);
  font-weight: 500;
}
.breadcrumb a:hover {
  color: #fff;
}
.breadcrumb .current {
  color: #fff;
  font-weight: 600;
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.32);
  color: #fff;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.4px;
  margin-bottom: 1rem;
  backdrop-filter: blur(6px);
}
.hero-content h1 {
  color: #fff;
  font-size: clamp(1.7rem, 3.6vw, 2.85rem);
  font-weight: 800;
  line-height: 1.3;
  margin: 0 0 1rem;
  max-width: 920px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.22);
}
.hero-desc {
  color: rgba(255, 255, 255, 0.76);
  font-size: 1rem;
  max-width: 760px;
  margin-bottom: 1.5rem;
  line-height: 1.8;
}
.article-meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}
.meta-span {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 0.3rem 0.9rem;
  border-radius: 40px;
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
}

/* ===== 文章主体区域 ===== */
.article-wrap {
  padding: calc(var(--section-pad) * 0.7) 0;
}
.article-card {
  background: #fff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: clamp(1.5rem, 3vw, 2.8rem);
}
.article-body {
  font-size: 1rem;
  line-height: 1.92;
  color: #333d50;
}
.article-body p {
  margin-bottom: 1.35em;
}
.article-body h2 {
  font-size: 1.5rem;
  font-weight: 800;
  margin: 1.7em 0 0.75em;
  color: var(--text);
  padding-left: 0.8em;
  border-left: 4px solid var(--primary);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 1.45em 0 0.6em;
  color: var(--text);
}
.article-body ul,
.article-body ol {
  margin: 0 0 1.4em 1.4em;
}
.article-body ul li,
.article-body ol li {
  margin-bottom: 0.35em;
}
.article-body ul li::marker {
  color: var(--primary);
}
.article-body img {
  border-radius: var(--radius);
  margin: 1.6em 0;
  width: 100%;
  object-fit: cover;
}
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-100);
  padding: 1rem 1.25rem;
  margin: 1.4em 0;
  border-radius: 0 var(--radius) var(--radius) 0;
  color: #3a4460;
  font-size: 0.96rem;
}
.article-body table {
  width: 100%;
  margin: 1.4em 0;
  border-collapse: collapse;
}
.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 0.7rem 1rem;
}
.article-body th {
  background: #f7f9ff;
  text-align: left;
}
.article-body code {
  background: #f1f5f9;
  color: #c026d3;
  padding: 0.15em 0.4em;
  border-radius: 6px;
  font-size: 0.9em;
}
.article-empty-tip {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
}
.article-not-found {
  text-align: center;
  padding: 2.8rem 1rem;
}
.not-found-icon {
  display: inline-block;
  font-size: 3rem;
  color: var(--primary);
  margin-bottom: 1rem;
  background: var(--primary-100);
  width: 84px;
  height: 84px;
  line-height: 84px;
  border-radius: 50%;
}
.article-not-found h2 {
  font-size: 1.7rem;
  margin-bottom: 0.7rem;
}
.article-not-found p {
  color: var(--text-muted);
  max-width: 440px;
  margin: 0 auto 1.6rem;
}
.article-actions {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  flex-wrap: wrap;
}

/* 文章标签 */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 2rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
}
/* 文章分享 */
.article-share {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 1.3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--border);
}
.share-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}
.share-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  border: 1px solid var(--border);
  transition: all 0.2s ease;
  font-size: 0.9rem;
}
.share-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 6px 14px rgba(61, 90, 254, 0.3);
}

/* ===== 侧边栏 ===== */
.sidebar-root {
  position: sticky;
  top: calc(var(--header-h) + 20px);
}
.sidebar-widget {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-xs);
  padding: 1.4rem 1.5rem;
  margin-bottom: 1.4rem;
}
.widget-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 2px solid var(--primary-100);
}
.widget-title i {
  color: var(--primary);
}
.widget-link {
  color: var(--primary);
  font-size: 0.82rem;
  font-weight: 600;
}
.sidebar-links li + li {
  border-top: 1px solid var(--border);
}
.sidebar-links a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.68rem 0;
  color: var(--text);
  font-weight: 500;
  font-size: 0.9rem;
  transition: padding-left 0.2s ease, color 0.2s ease;
}
.sidebar-links a i {
  color: var(--primary);
  font-size: 0.82rem;
  width: 1.1rem;
  text-align: center;
}
.sidebar-links a:hover {
  color: var(--primary);
  padding-left: 0.4rem;
}
.hot-list {
  margin: 0;
  padding: 0;
}
.hot-item {
  display: flex;
  align-items: flex-start;
  gap: 0.7rem;
  padding: 0.55rem 0;
  border-bottom: 1px dashed var(--border);
  transition: transform 0.2s ease;
}
.hot-item:last-child {
  border-bottom: none;
}
.hot-item:hover {
  transform: translateX(3px);
}
.hot-num {
  font-weight: 800;
  color: var(--primary);
  font-size: 0.8rem;
  background: var(--primary-100);
  min-width: 1.7rem;
  height: 1.7rem;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  padding: 0 0.25rem;
}
.hot-info {
  min-width: 0;
}
.hot-info h4 {
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.5;
  margin: 0 0 0.2rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.hot-info h4:hover {
  color: var(--primary);
}
.hot-meta {
  font-size: 0.75rem;
  color: var(--text-light);
}
.tip-widget {
  background: linear-gradient(135deg, var(--primary), #7c5cfc);
  border: none;
  color: #fff;
  box-shadow: 0 12px 30px rgba(61, 90, 254, 0.28);
}
.tip-widget h3 {
  color: #fff;
  font-size: 1.02rem;
  margin-bottom: 0.7rem;
}
.tip-widget p {
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.88rem;
  margin-bottom: 1.1rem;
  line-height: 1.7;
}
.tip-widget .widget-title {
  border-bottom-color: rgba(255, 255, 255, 0.2);
  color: #fff;
}
.tip-widget .widget-title i {
  color: var(--accent);
}

/* ===== 相关资讯 ===== */
.related-section {
  padding: var(--section-pad) 0;
  background: var(--surface-alt);
}
.related-grid {
  row-gap: 1.6rem;
}
.relate-card {
  display: block;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
}
.relate-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}
.relate-cover {
  position: relative;
  height: 185px;
  overflow: hidden;
}
.relate-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.relate-card:hover .relate-cover img {
  transform: scale(1.05);
}
.relate-cat {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(6px);
  padding: 0.25rem 0.7rem;
  border-radius: 30px;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  box-shadow: 0 2px 8px rgba(15, 24, 50, 0.12);
}
.relate-info {
  padding: 1.2rem 1.3rem 1.35rem;
}
.relate-info h3 {
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.55;
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.relate-info h3:hover {
  color: var(--primary);
}
.relate-date {
  font-size: 0.79rem;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: 2.8rem 1rem;
  background: #fff;
  border-radius: var(--radius);
  border: 1px dashed var(--border);
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ===== CTA 横幅 ===== */
.cta-section {
  position: relative;
  background: url("/assets/images/backpic/back-3.png") center / cover no-repeat;
  padding: 4.8rem 0;
  text-align: center;
}
.cta-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(18, 26, 60, 0.94), rgba(48, 58, 140, 0.86));
}
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 22px;
}
.cta-content h2 {
  color: #fff;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  margin-bottom: 0.8rem;
}
.cta-content p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 1rem;
  margin-bottom: 1.6rem;
  line-height: 1.8;
}

/* ===== FAQ ===== */
.faq-section {
  padding: var(--section-pad) 0;
}
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}
.faq-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.45rem 1.5rem;
  box-shadow: var(--shadow-xs);
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}
.faq-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}
.faq-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.55rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.faq-card h3::before {
  content: "";
  width: 6px;
  height: 18px;
  background: var(--primary);
  border-radius: 3px;
  flex-shrink: 0;
}
.faq-card p {
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.8;
  margin: 0 0 0 1.05rem;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #0b1120;
  color: #9aa4b5;
  padding: 4rem 0 0;
  border-top: 3px solid var(--primary);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .footer-logo {
  display: flex;
  gap: 0.8rem;
  align-items: center;
  color: #fff;
  font-size: 1.15rem;
  font-weight: 800;
}
.footer-logo .logo-mark {
  width: 44px;
  height: 44px;
  font-size: 0.78rem;
}
.footer-brand p {
  margin: 1rem 0 0;
  color: rgba(255, 255, 255, 0.62);
  font-size: 0.9rem;
  max-width: 360px;
  line-height: 1.8;
}
.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.1rem;
}
.footer-col ul {
  display: grid;
  gap: 0.6rem;
}
.footer-col a {
  color: rgba(255, 255, 255, 0.64);
  font-size: 0.88rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 3px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 0;
  flex-wrap: wrap;
  gap: 0.6rem;
  color: rgba(255, 255, 255, 0.42);
  font-size: 0.82rem;
}
.tech-info {
  letter-spacing: 0.3px;
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  :root {
    --header-h: 68px;
    --section-pad: 64px;
  }
  .main-nav {
    display: none;
  }
  .mobile-toggle {
    display: flex;
  }
  .article-hero {
    min-height: 360px;
    padding: 60px 0 48px;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}
@media (max-width: 767px) {
  :root {
    --section-pad: 52px;
    --header-h: 62px;
  }
  .logo-mark {
    width: 42px;
    height: 42px;
  }
  .logo-text {
    font-size: 1rem;
  }
  .header-inner {
    gap: 0.8rem;
  }
  .header-cta .btn-sm {
    padding: 0.42rem 0.9rem;
    font-size: 0.78rem;
  }
  .article-card {
    padding: 1.2rem;
  }
  .article-body {
    font-size: 0.96rem;
  }
  .article-body h2 {
    font-size: 1.3rem;
  }
  .hero-content h1 {
    font-size: 1.55rem;
  }
  .hero-desc {
    font-size: 0.92rem;
  }
  .article-meta-list {
    gap: 0.5rem;
  }
  .meta-span {
    font-size: 0.78rem;
    padding: 0.25rem 0.7rem;
  }
  .related-section {
    overflow: hidden;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .header-cta .btn-sm {
    display: none;
  }
  .logo-text {
    font-size: 0.95rem;
  }
  .article-hero {
    min-height: 320px;
    padding: 50px 0 38px;
  }
  .breadcrumb {
    font-size: 0.78rem;
  }
  .article-meta-list {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-content h2 {
    font-size: 1.35rem;
  }
}

/* roulang page: category2 */
:root {
      --primary: #1e5eff;
      --primary-dark: #1747d0;
      --primary-light: #e8f0ff;
      --accent: #ffb020;
      --accent-dark: #e89c0c;
      --dark: #0e1c36;
      --dark-soft: #16294a;
      --bg: #f5f7fb;
      --white: #ffffff;
      --text: #14213d;
      --text-muted: #5a6b8c;
      --border: #e3e9f2;
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-sm: 8px;
      --shadow-sm: 0 2px 10px rgba(16, 42, 90, 0.06);
      --shadow-md: 0 8px 30px rgba(16, 42, 90, 0.10);
      --shadow-lg: 0 18px 50px rgba(16, 42, 90, 0.16);
      --transition: all .28s cubic-bezier(.4, 0, .2, 1);
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      margin: 0;
      -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(--primary-dark);
    }

    a:focus-visible,
    button:focus-visible,
    summary:focus-visible {
      outline: 3px solid rgba(30, 94, 255, .4);
      outline-offset: 2px;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }

    /* ===== 导航 Header ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, .92);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border);
    }

    .header-inner {
      display: flex;
      align-items: center;
      gap: 24px;
      height: 72px;
      position: relative;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-weight: 800;
      font-size: 1.25rem;
      color: var(--text);
      flex-shrink: 0;
    }

    .logo:hover {
      color: var(--text);
    }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      color: #fff;
      font-size: .8rem;
      letter-spacing: .02em;
      box-shadow: 0 6px 14px rgba(30, 94, 255, .35);
    }

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

    .main-nav .nav-link {
      padding: 8px 16px;
      border-radius: 999px;
      font-size: .95rem;
      font-weight: 500;
      color: var(--text-muted);
      white-space: nowrap;
    }

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

    .main-nav .nav-link.active {
      color: var(--white);
      background: var(--primary);
      box-shadow: 0 6px 16px rgba(30, 94, 255, .30);
    }

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

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--border);
      border-radius: 12px;
      background: var(--white);
      color: var(--text);
      font-size: 1.2rem;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      transition: var(--transition);
    }

    .menu-toggle:hover {
      border-color: var(--primary);
      color: var(--primary);
    }

    /* ===== 按钮 Button ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 10px 22px;
      border-radius: 999px;
      font-size: .95rem;
      font-weight: 600;
      line-height: 1.4;
      border: 2px solid transparent;
      cursor: pointer;
      transition: var(--transition);
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 8px 20px rgba(30, 94, 255, .30);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      color: #fff;
      transform: translateY(-2px);
    }

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

    .btn-outline:hover {
      background: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    .btn-light {
      background: #fff;
      color: var(--primary);
    }

    .btn-light:hover {
      background: var(--primary-light);
      color: var(--primary-dark);
      transform: translateY(-2px);
    }

    .btn-outline-light {
      background: transparent;
      border-color: rgba(255, 255, 255, .7);
      color: #fff;
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, .15);
      border-color: #fff;
      color: #fff;
      transform: translateY(-2px);
    }

    /* ===== 页面横幅 Banner ===== */
    .page-banner {
      position: relative;
      padding: 100px 0 90px;
      background-size: cover;
      background-position: center;
      color: #fff;
      overflow: hidden;
    }

    .banner-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(100deg, rgba(10, 20, 50, .9) 0%, rgba(10, 20, 50, .55) 55%, rgba(10, 20, 50, .25) 100%);
    }

    .banner-content {
      position: relative;
      z-index: 2;
      max-width: 780px;
    }

    .banner-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, .18);
      backdrop-filter: blur(6px);
      -webkit-backdrop-filter: blur(6px);
      border: 1px solid rgba(255, 255, 255, .25);
      padding: 6px 16px;
      border-radius: 999px;
      font-size: .85rem;
      font-weight: 600;
      color: #fff;
    }

    .banner-content h1 {
      font-size: clamp(1.8rem, 4vw, 2.8rem);
      line-height: 1.25;
      margin: 20px 0 16px;
      font-weight: 800;
    }

    .banner-content p {
      font-size: 1.05rem;
      color: rgba(255, 255, 255, .88);
      max-width: 620px;
    }

    .banner-meta {
      margin-top: 28px;
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }

    .banner-meta .stat-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, .16);
      padding: 8px 16px;
      border-radius: 12px;
      font-size: .9rem;
      border: 1px solid rgba(255, 255, 255, .18);
    }

    /* ===== 通用板块 ===== */
    .section {
      padding: 80px 0;
    }

    .section-header {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 20px;
      flex-wrap: wrap;
      margin-bottom: 40px;
    }

    .section-header .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: var(--primary);
      font-size: .9rem;
      font-weight: 700;
      letter-spacing: .04em;
      text-transform: uppercase;
    }

    .section-header h2 {
      font-size: clamp(1.5rem, 3vw, 2.2rem);
      font-weight: 800;
      line-height: 1.3;
      margin: 8px 0 0;
    }

    .section-header .section-desc {
      color: var(--text-muted);
      max-width: 520px;
      margin-top: 6px;
    }

    .section-header.center {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      justify-content: center;
    }

    .section-header.center .section-desc {
      text-align: center;
    }

    .section-more {
      color: var(--primary);
      font-weight: 600;
    }

    .section-more:hover {
      color: var(--primary-dark);
    }

    /* ===== 最新资讯动态 ===== */
    .news-feed {
      background: var(--white);
    }

    .news-feature {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      min-height: 420px;
      display: flex;
      align-items: flex-end;
      height: 100%;
    }

    .news-feature img {
      position: absolute;
      inset: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .news-feature-overlay {
      position: relative;
      z-index: 2;
      background: linear-gradient(transparent, rgba(10, 20, 50, .88));
      padding: 32px;
      color: #fff;
      width: 100%;
    }

    .news-feature .news-tag {
      background: var(--accent);
      color: var(--text);
    }

    .news-feature h3 {
      font-size: 1.4rem;
      font-weight: 700;
      margin: 12px 0 8px;
      line-height: 1.4;
    }

    .news-feature p {
      color: rgba(255, 255, 255, .85);
      margin-bottom: 6px;
    }

    .news-feature .news-date {
      font-size: .85rem;
      color: rgba(255, 255, 255, .7);
    }

    .news-sublist {
      display: flex;
      flex-direction: column;
      gap: 14px;
      height: 100%;
    }

    .news-item {
      display: flex;
      gap: 16px;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: var(--radius-md);
      padding: 16px;
      transition: var(--transition);
      color: var(--text);
      align-items: flex-start;
    }

    .news-item:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-md);
      border-color: transparent;
      color: var(--text);
    }

    .news-item img {
      width: 110px;
      height: 88px;
      border-radius: 10px;
      object-fit: cover;
      flex-shrink: 0;
    }

    .news-body {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .news-tag {
      display: inline-flex;
      align-items: center;
      align-self: flex-start;
      background: var(--primary-light);
      color: var(--primary);
      font-size: .75rem;
      font-weight: 700;
      padding: 3px 10px;
      border-radius: 999px;
      line-height: 1.5;
    }

    .news-item h4 {
      font-size: .98rem;
      font-weight: 700;
      line-height: 1.45;
      margin: 0;
    }

    .news-item h4 a {
      color: var(--text);
    }

    .news-item h4 a:hover {
      color: var(--primary);
    }

    .news-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: .82rem;
      color: var(--text-muted);
    }

    /* ===== 深度评测专题 ===== */
    .reviews-section {
      background: var(--bg);
    }

    .review-card {
      background: var(--white);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border: 1px solid var(--border);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

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

    .review-thumb {
      position: relative;
      height: 180px;
      overflow: hidden;
    }

    .review-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform .6s ease;
    }

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

    .review-thumb .review-badge {
      position: absolute;
      top: 14px;
      left: 14px;
      background: rgba(255, 255, 255, .94);
      color: var(--primary);
      font-size: .78rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 999px;
      box-shadow: var(--shadow-sm);
    }

    .review-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      flex: 1;
    }

    .review-body h3 {
      font-size: 1.05rem;
      font-weight: 700;
      line-height: 1.45;
      margin: 0;
    }

    .review-body h3 a {
      color: var(--text);
    }

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

    .review-body p {
      color: var(--text-muted);
      font-size: .9rem;
      margin-bottom: 8px;
      flex: 1;
    }

    .review-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: auto;
    }

    .score {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      background: var(--primary-light);
      color: var(--primary);
      font-weight: 800;
      border-radius: 8px;
      padding: 4px 12px;
      font-size: .9rem;
    }

    .read-more {
      color: var(--primary);
      font-weight: 600;
      font-size: .88rem;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* ===== 热门资讯榜单 ===== */
    .ranking-section {
      background: var(--dark);
      color: #fff;
    }

    .ranking-section .section-header h2 {
      color: #fff;
    }

    .ranking-section .section-header .section-desc {
      color: rgba(255, 255, 255, .65);
    }

    .ranking-section .eyebrow {
      color: var(--accent);
    }

    .ranking-list {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 20px;
    }

    .rank-item {
      background: rgba(255, 255, 255, .05);
      border: 1px solid rgba(255, 255, 255, .09);
      border-radius: var(--radius-lg);
      padding: 24px 18px;
      transition: var(--transition);
    }

    .rank-item:hover {
      background: rgba(255, 255, 255, .1);
      transform: translateY(-4px);
    }

    .rank-num {
      font-size: 2.4rem;
      font-weight: 900;
      font-style: italic;
      line-height: 1;
      background: linear-gradient(135deg, var(--accent), #ffd27a);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .rank-title {
      font-weight: 700;
      font-size: 1rem;
      margin-top: 12px;
      margin-bottom: 8px;
      line-height: 1.4;
    }

    .rank-desc {
      font-size: .85rem;
      color: rgba(255, 255, 255, .55);
      margin-bottom: 0;
    }

    /* ===== 数据统计 ===== */
    .stats-strip {
      background: linear-gradient(120deg, var(--primary), var(--primary-dark));
      padding: 60px 0;
    }

    .stat-card {
      text-align: center;
      color: #fff;
      padding: 16px;
    }

    .stat-card .stat-icon {
      width: 56px;
      height: 56px;
      margin: 0 auto 14px;
      border-radius: 16px;
      background: rgba(255, 255, 255, .16);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
    }

    .stat-card .stat-num {
      font-size: 2.4rem;
      font-weight: 900;
      line-height: 1.2;
    }

    .stat-card .stat-label {
      font-size: .9rem;
      opacity: .8;
      margin-top: 6px;
    }

    /* ===== 标签筛选 ===== */
    .tags-section {
      background: var(--white);
    }

    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: center;
      max-width: 820px;
      margin: 0 auto;
    }

    .tag-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--bg);
      border: 1px solid var(--border);
      border-radius: 999px;
      padding: 10px 20px;
      font-size: .9rem;
      font-weight: 600;
      transition: var(--transition);
      color: var(--text);
    }

    .tag-chip i {
      color: var(--primary);
    }

    .tag-chip:hover {
      background: var(--primary);
      border-color: var(--primary);
      color: #fff;
      transform: translateY(-2px);
    }

    .tag-chip:hover i {
      color: #fff;
    }

    .tag-chip .tag-count {
      background: var(--primary-light);
      color: var(--primary);
      border-radius: 999px;
      padding: 2px 8px;
      font-size: .75rem;
      font-weight: 800;
    }

    .tag-chip:hover .tag-count {
      background: rgba(255, 255, 255, .9);
      color: var(--primary);
    }

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

    .faq-accordion {
      max-width: 860px;
      margin: 0 auto;
    }

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

    .faq-item:hover {
      border-color: transparent;
      box-shadow: var(--shadow-sm);
    }

    .faq-item summary {
      cursor: pointer;
      padding: 20px 24px;
      font-weight: 700;
      font-size: 1rem;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }

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

    .faq-item summary .faq-icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--primary-light);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: .8rem;
      flex-shrink: 0;
      transition: var(--transition);
    }

    .faq-item[open] summary .faq-icon {
      transform: rotate(45deg);
      background: var(--primary);
      color: #fff;
    }

    .faq-content {
      padding: 0 24px 20px;
      color: var(--text-muted);
      font-size: .95rem;
    }

    /* ===== CTA ===== */
    .cta-section {
      padding: 100px 0;
      background:
        linear-gradient(90deg, rgba(15, 23, 42, .92), rgba(30, 94, 255, .82)),
        url('/assets/images/backpic/back-2.png') center / cover;
      color: #fff;
      text-align: center;
    }

    .cta-box h2 {
      font-size: clamp(1.6rem, 3vw, 2.4rem);
      font-weight: 800;
      margin: 0 0 14px;
    }

    .cta-box p {
      font-size: 1.05rem;
      color: rgba(255, 255, 255, .8);
      max-width: 560px;
      margin: 0 auto 30px;
    }

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

    /* ===== 页脚 Footer ===== */
    .site-footer {
      background: var(--dark);
      color: rgba(255, 255, 255, .7);
      padding: 60px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 40px;
    }

    .footer-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.2rem;
      font-weight: 800;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-logo .logo-mark {
      width: 36px;
      height: 36px;
      font-size: .7rem;
    }

    .footer-brand p {
      font-size: .9rem;
      margin-bottom: 0;
      max-width: 360px;
    }

    .footer-col h4 {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 14px;
    }

    .footer-col ul {
      list-style: none;
      padding: 0;
      margin: 0;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .footer-col a {
      color: rgba(255, 255, 255, .6);
      font-size: .9rem;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, .12);
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
      gap: 12px;
      flex-wrap: wrap;
      font-size: .85rem;
    }

    .tech-info {
      color: rgba(255, 255, 255, .4);
      font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
    }

    /* ===== 响应式断点 ===== */
    @media (max-width: 1024px) {
      .ranking-list {
        grid-template-columns: repeat(2, 1fr);
      }

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

    @media (max-width: 768px) {
      .section {
        padding: 56px 0;
      }

      .page-banner {
        padding: 64px 0;
      }

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

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

      .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        background: var(--white);
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        padding: 16px 20px;
        display: none;
        flex: unset;
      }

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

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

      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }

      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
      }

      .review-cards {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 520px) {
      .banner-meta {
        flex-direction: column;
        align-items: flex-start;
      }

      .news-item img {
        width: 84px;
        height: 76px;
      }

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

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

/* roulang page: category3 */
:root{
  --primary:#0B1C3F;
  --primary-dark:#071229;
  --primary-light:#1B2F5E;
  --accent:#E8B45A;
  --accent-dark:#C88E2B;
  --accent-light:#F0D28A;
  --bg-body:#F2F5FA;
  --bg-white:#FFFFFF;
  --bg-deep:#0A1430;
  --text-main:#16213E;
  --text-body:#3D4A66;
  --text-weak:#77829E;
  --border-color:#E2E7F0;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:8px;
  --shadow-card:0 10px 30px rgba(13,27,62,.07);
  --shadow-hover:0 18px 44px rgba(13,27,62,.13);
  --transition:all .3s ease;
  --nav-h:76px;
  --section-pad:80px;
}

/* ===== Reset & Base ===== */
*,*::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,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  background:var(--bg-body);
  color:var(--text-body);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--text-main);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--accent-dark)}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
section{position:relative}
::selection{background:rgba(232,180,90,.3)}

/* ===== Header / Nav ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  height:var(--nav-h);
  background:rgba(255,255,255,.95);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(226,231,240,.7);
  transition:var(--transition);
}
.site-header.scrolled{box-shadow:0 4px 24px rgba(11,28,63,.08)}
.header-inner{
  max-width:1280px;margin:0 auto;
  height:var(--nav-h);
  padding:0 28px;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
}
.brand-logo{
  display:flex;align-items:center;gap:12px;
  flex-shrink:0;
}
.logo-mark{
  display:flex;align-items:center;justify-content:center;
  width:40px;height:40px;border-radius:12px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;
  box-shadow:0 6px 16px rgba(11,28,63,.25);
}
.logo-text{
  font-size:20px;font-weight:700;color:var(--text-main);
  letter-spacing:.5px;white-space:nowrap;
}
.main-nav{
  display:flex;align-items:center;gap:6px;
  margin-left:auto;
}
.nav-link{
  display:inline-block;
  padding:9px 18px;
  border-radius:999px;
  font-size:15px;font-weight:500;color:var(--text-body);
  transition:var(--transition);
  white-space:nowrap;
}
.nav-link:hover{color:var(--primary);background:rgba(11,28,63,.05)}
.nav-link.active{
  color:#fff;background:var(--primary);
  box-shadow:0 6px 18px rgba(11,28,63,.2);
}
.header-cta{
  display:flex;align-items:center;gap:12px;
  flex-shrink:0;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  padding:12px 28px;border-radius:999px;
  font-size:15px;font-weight:600;
  transition:var(--transition);
  border:2px solid transparent;
  line-height:1.2;
}
.btn-primary{
  background:var(--primary);color:#fff;
  box-shadow:0 8px 20px rgba(11,28,63,.18);
}
.btn-primary:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 30px rgba(11,28,63,.28);
  color:#fff;
}
.btn-accent{
  background:var(--accent);color:var(--primary-dark);
  box-shadow:0 8px 22px rgba(232,180,90,.35);
}
.btn-accent:hover{
  transform:translateY(-2px);
  box-shadow:0 14px 34px rgba(232,180,90,.45);
  color:var(--primary-dark);
}
.btn-outline{
  border-color:rgba(255,255,255,.5);color:#fff;background:transparent;
}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff}
.btn-sm{padding:8px 20px;font-size:14px}
.menu-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  background:var(--primary);flex-direction:column;
  align-items:center;justify-content:center;gap:5px;
}
.menu-toggle span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:var(--transition)}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Page Banner ===== */
.page-banner{
  position:relative;
  padding:110px 0 90px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  overflow:hidden;
}
.page-banner::before{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(7,18,41,.94) 0%,rgba(11,28,63,.82) 40%,rgba(11,28,63,.55) 100%);
}
.page-banner::after{
  content:"";position:absolute;
  top:-60%;right:-10%;width:520px;height:520px;
  background:radial-gradient(circle,rgba(232,180,90,.18) 0%,transparent 70%);
  pointer-events:none;
}
.banner-content{position:relative;z-index:2;max-width:820px}
.breadcrumb{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:rgba(255,255,255,.6);
  margin-bottom:22px;
}
.breadcrumb a{color:rgba(255,255,255,.75)}
.breadcrumb a:hover{color:var(--accent-light)}
.breadcrumb .sep{opacity:.5}
.page-banner h1{
  color:#fff;font-size:42px;font-weight:800;line-height:1.2;
  margin-bottom:16px;letter-spacing:1px;
}
.page-banner .banner-desc{
  color:rgba(255,255,255,.82);font-size:17px;line-height:1.8;
  max-width:640px;margin-bottom:26px;
}
.banner-tags{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 16px;border-radius:999px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.92);font-size:13px;font-weight:500;
  backdrop-filter:blur(4px);
  transition:var(--transition);
}
.tag i{color:var(--accent-light);font-size:12px}
.tag:hover{background:rgba(255,255,255,.2)}

/* ===== Section Common ===== */
.section{padding:var(--section-pad) 0}
.section-head{
  margin-bottom:44px;
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
}
.section-title{
  font-size:30px;font-weight:800;color:var(--text-main);
  line-height:1.3;position:relative;
}
.section-title::before{
  content:"";display:inline-block;width:32px;height:4px;
  border-radius:4px;background:var(--accent);
  vertical-align:6px;margin-right:14px;
}
.section-subtitle{
  color:var(--text-weak);font-size:15px;margin-top:8px;
  padding-left:46px;
}
.section-more{
  font-size:14px;font-weight:600;color:var(--primary);
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 18px;border-radius:999px;
  border:1px solid var(--border-color);background:#fff;
  transition:var(--transition);
}
.section-more:hover{background:var(--primary);color:#fff;border-color:var(--primary)}
.section-more i{font-size:12px}

/* ===== Tips Grid ===== */
.tips-section{background:#fff}
.tips-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;
}
.tip-card{
  background:var(--bg-body);
  border:1px solid var(--border-color);
  border-radius:var(--radius-lg);
  padding:36px 28px 32px;
  text-align:left;
  transition:var(--transition);
  position:relative;overflow:hidden;
}
.tip-card::before{
  content:"";position:absolute;
  top:0;left:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--accent),var(--accent-light));
  opacity:0;transition:var(--transition);
}
.tip-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
  border-color:transparent;
}
.tip-card:hover::before{opacity:1}
.tip-icon{
  width:56px;height:56px;border-radius:16px;
  background:linear-gradient(135deg,var(--primary),var(--primary-light));
  display:flex;align-items:center;justify-content:center;
  font-size:22px;color:var(--accent);
  margin-bottom:20px;
  box-shadow:0 8px 20px rgba(11,28,63,.18);
}
.tip-card h3{font-size:18px;font-weight:700;color:var(--text-main);margin-bottom:10px}
.tip-card p{font-size:14px;color:var(--text-weak);line-height:1.7}

/* ===== Article Cards ===== */
.article-section{background:var(--bg-body)}
.article-col{margin-bottom:28px}
.article-card{
  background:#fff;border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:var(--transition);
  height:100%;display:flex;flex-direction:column;
}
.article-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-hover);
}
.article-cover{
  position:relative;overflow:hidden;height:220px;
}
.article-cover img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .5s ease;
}
.article-card:hover .article-cover img{transform:scale(1.05)}
.article-cover::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(to top,rgba(11,28,63,.25) 0%,transparent 50%);
}
.article-badge{
  position:absolute;top:16px;left:16px;z-index:2;
  background:rgba(255,255,255,.92);
  color:var(--primary);font-size:12px;font-weight:700;
  padding:5px 14px;border-radius:999px;
  box-shadow:0 4px 12px rgba(11,28,63,.12);
  backdrop-filter:blur(4px);
}
.article-content{
  padding:26px;display:flex;flex-direction:column;
  flex:1;
}
.article-meta{
  display:flex;align-items:center;gap:18px;
  font-size:13px;color:var(--text-weak);margin-bottom:12px;
}
.article-meta i{margin-right:5px;color:var(--accent-dark)}
.article-title{
  font-size:18px;font-weight:700;color:var(--text-main);
  line-height:1.45;margin-bottom:10px;
  transition:var(--transition);
}
.article-card:hover .article-title{color:var(--primary)}
.article-excerpt{
  font-size:14px;color:var(--text-weak);line-height:1.7;
  margin-bottom:18px;flex:1;
}
.article-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.article-link i{transition:transform .3s ease}
.article-link:hover{color:var(--accent-dark)}
.article-link:hover i{transform:translateX(4px)}

/* ===== Stats Section ===== */
.stats-section{
  background:var(--bg-deep) url('/assets/images/backpic/back-1.png') center/cover fixed;
  padding:90px 0;position:relative;
}
.stats-section::before{
  content:"";position:absolute;inset:0;
  background:rgba(10,20,48,.92);
}
.stats-section .section-head{position:relative;z-index:2}
.stats-section .section-title{color:#fff}
.stats-section .section-subtitle{color:rgba(255,255,255,.6)}
.stats-grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:repeat(4,1fr);gap:32px;
  margin-top:10px;
}
.stat-item{
  text-align:center;
  padding:36px 20px;
  border-radius:var(--radius-lg);
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.05);
  backdrop-filter:blur(12px);
  transition:var(--transition);
}
.stat-item:hover{
  background:rgba(255,255,255,.09);
  transform:translateY(-4px);
  border-color:rgba(232,180,90,.4);
}
.stat-number{
  font-size:46px;font-weight:800;color:#fff;
  line-height:1;display:block;margin-bottom:8px;
  font-feature-settings:"tnum";
}
.stat-number small{font-size:22px;color:var(--accent);margin-left:2px}
.stat-label{
  font-size:14px;color:rgba(255,255,255,.65);
  letter-spacing:1px;
}

/* ===== Process Section ===== */
.process-section{background:#fff}
.process-list{
  position:relative;
  padding-left:20px;
}
.process-list::before{
  content:"";position:absolute;
  left:8px;top:10px;bottom:10px;
  width:3px;border-radius:3px;
  background:linear-gradient(to bottom,var(--accent),var(--primary-light));
}
.process-item{
  position:relative;
  padding:22px 0 30px 56px;
}
.process-item:last-child{padding-bottom:0}
.process-item::before{
  content:"";position:absolute;
  left:-13px;top:26px;
  width:18px;height:18px;border-radius:50%;
  background:var(--accent);
  border:4px solid #fff;
  box-shadow:0 0 0 3px var(--accent);
}
.process-step{
  display:inline-flex;
  background:var(--primary);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:1px;
  padding:3px 14px;border-radius:999px;
  margin-bottom:10px;
}
.process-item h3{
  font-size:19px;font-weight:700;color:var(--text-main);
  margin-bottom:6px;
}
.process-item p{
  font-size:14px;color:var(--text-weak);
  max-width:640px;line-height:1.75;
}

/* ===== Quote Section ===== */
.quote-section{
  background:var(--bg-body);
}
.quote-grid{
  display:grid;grid-template-columns:repeat(3,1fr);gap:28px;
}
.quote-card{
  background:#fff;border-radius:var(--radius-lg);
  padding:34px 30px 30px;
  box-shadow:var(--shadow-card);
  border:1px solid transparent;
  transition:var(--transition);
  position:relative;
}
.quote-card::before{
  content:"\201C";
  position:absolute;top:16px;right:24px;
  font-size:72px;line-height:1;
  color:rgba(232,180,90,.3);
  font-family:Georgia,serif;
}
.quote-card:hover{
  box-shadow:var(--shadow-hover);
  transform:translateY(-4px);
  border-color:var(--border-color);
}
.quote-text{
  font-size:15px;color:var(--text-body);line-height:1.85;
  margin-bottom:20px;position:relative;z-index:1;
}
.quote-author{
  display:flex;align-items:center;gap:10px;
  font-size:14px;font-weight:600;color:var(--primary);
}
.quote-author i{
  width:30px;height:30px;border-radius:50%;
  background:var(--primary);color:var(--accent);
  display:flex;align-items:center;justify-content:center;
  font-size:12px;
}

/* ===== FAQ Section ===== */
.faq-section{background:#fff}
.faq-list{max-width:820px;margin:0 auto}
.faq-item{
  border:1px solid var(--border-color);
  border-radius:var(--radius-md);
  margin-bottom:16px;
  overflow:hidden;
  background:var(--bg-white);
  transition:var(--transition);
}
.faq-item.active{
  border-color:var(--accent);
  box-shadow:0 8px 26px rgba(11,28,63,.08);
}
.faq-question{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 26px;
  font-size:16px;font-weight:600;color:var(--text-main);
  cursor:pointer;width:100%;text-align:left;
  transition:var(--transition);
}
.faq-question:hover{color:var(--primary)}
.faq-question .faq-icon{
  flex-shrink:0;width:30px;height:30px;border-radius:50%;
  background:var(--bg-body);color:var(--text-weak);
  display:flex;align-items:center;justify-content:center;
  font-size:14px;transition:var(--transition);
}
.faq-item.active .faq-icon{
  background:var(--accent);color:var(--primary-dark);
  transform:rotate(45deg);
}
.faq-answer{
  max-height:0;overflow:hidden;
  transition:max-height .4s ease;
}
.faq-answer-inner{
  padding:0 26px 24px;
  font-size:15px;color:var(--text-weak);line-height:1.8;
  border-top:1px dashed var(--border-color);padding-top:16px;
}

/* ===== CTA Section ===== */
.cta-section{
  padding:100px 0;
  background:url('/assets/images/backpic/back-3.png') center/cover fixed;
  position:relative;
}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(7,18,41,.94) 0%,rgba(11,28,63,.82) 60%);
}
.cta-box{
  position:relative;z-index:2;
  text-align:center;
  padding:60px 40px;
  border-radius:var(--radius-lg);
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(16px);
  max-width:900px;margin:0 auto;
}
.cta-title{
  font-size:34px;font-weight:800;color:#fff;
  margin-bottom:18px;letter-spacing:1px;
}
.cta-text{
  color:rgba(255,255,255,.75);font-size:16px;
  max-width:560px;margin:0 auto 34px;line-height:1.8;
}
.cta-buttons{
  display:flex;justify-content:center;gap:16px;flex-wrap:wrap;
}
.cta-badge{
  display:inline-block;
  background:rgba(232,180,90,.15);
  border:1px solid rgba(232,180,90,.4);
  color:var(--accent-light);
  font-size:13px;font-weight:600;
  padding:6px 20px;border-radius:999px;
  margin-bottom:24px;
  letter-spacing:1px;
}
.cta-badge i{margin-right:6px}

/* ===== Footer ===== */
.site-footer{
  background:var(--bg-deep);
  color:rgba(255,255,255,.7);
  padding:70px 0 30px;
}
.footer-grid{
  display:grid;grid-template-columns:2fr 1fr 1fr;gap:48px;
  margin-bottom:50px;
}
.footer-logo{
  display:inline-flex;align-items:center;gap:12px;
  color:#fff;font-size:20px;font-weight:700;
  margin-bottom:18px;
}
.footer-logo .logo-mark{
  width:38px;height:38px;font-size:13px;
}
.footer-brand p{
  font-size:14px;line-height:1.8;
  color:rgba(255,255,255,.5);
  max-width:320px;
}
.footer-col h4{
  color:#fff;font-size:16px;font-weight:600;
  margin-bottom:18px;
}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{
  color:rgba(255,255,255,.55);font-size:14px;
  transition:var(--transition);
}
.footer-col ul a:hover{color:var(--accent);padding-left:6px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding-top:24px;
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:12px;
}
.copyright{font-size:13px;color:rgba(255,255,255,.4)}
.tech-info{font-size:13px;color:rgba(255,255,255,.25);font-family:monospace}

/* ===== Responsive ===== */
@media screen and (max-width:1024px){
  :root{--section-pad:64px}
  .tips-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .quote-grid{grid-template-columns:1fr 1fr}
  .main-nav{gap:2px}
  .nav-link{padding:8px 14px;font-size:14px}
  .page-banner h1{font-size:36px}
}

@media screen and (max-width:768px){
  :root{--section-pad:52px}
  .site-header{height:auto;min-height:var(--nav-h)}
  .header-inner{flex-wrap:wrap;padding:12px 20px;gap:10px}
  .menu-toggle{display:flex}
  .main-nav{
    display:none;
    flex-direction:column;
    width:100%;
    background:#fff;
    border-radius:16px;
    padding:16px;
    box-shadow:var(--shadow-hover);
    gap:6px;
    margin-top:4px;
    position:absolute;top:100%;left:16px;right:16px;z-index:100;
  }
  .main-nav.open{display:flex}
  .nav-link{
    padding:12px 16px;border-radius:12px;
    font-size:15px;
  }
  .header-cta{display:none}
  .page-banner{padding:80px 0 60px}
  .page-banner h1{font-size:28px}
  .page-banner .banner-desc{font-size:15px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .quote-grid{grid-template-columns:1fr}
  .cta-title{font-size:26px}
  .process-item{padding-left:44px}
}

@media screen and (max-width:520px){
  :root{--section-pad:44px}
  .container{padding:0 16px}
  .tips-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr 1fr;gap:16px}
  .stat-number{font-size:36px}
  .section-head{align-items:flex-start}
  .section-title{font-size:24px}
  .section-subtitle{padding-left:0}
  .article-cover{height:180px}
  .banner-tags .tag{font-size:12px;padding:5px 12px}
  .cta-box{padding:40px 20px}
  .cta-buttons .btn{width:100%}
}

/* A11y focus */
a:focus-visible,
button:focus-visible{
  outline:3px solid rgba(232,180,90,.6);
  outline-offset:2px;
  border-radius:6px;
}