/* roulang page: index */
:root {
  --primary: #0f172a;
  --primary-light: #1e293b;
  --secondary: #f59e0b;
  --secondary-hover: #d97706;
  --accent-gold: #fbbf24;
  --bg: #f8fafc;
  --bg-dark: #0b1120;
  --bg-soft: #f1f5f9;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --white: #ffffff;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  --shadow: 0 10px 32px rgba(15, 23, 42, 0.09);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.15);
  --transition: all 0.3s ease;
  --container: 1200px;
  --section-space: 88px;
}
*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}
input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}
h1, h2, h3, h4, h5 {
  margin: 0;
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
}
p {
  margin: 0;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}
:focus-visible {
  outline: 2px solid var(--secondary);
  outline-offset: 3px;
  border-radius: 4px;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section {
  padding: var(--section-space) 0;
}
.section-header {
  max-width: 680px;
  margin-bottom: 48px;
}
.section-header .section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--secondary);
  text-transform: uppercase;
  margin-bottom: 10px;
  background: rgba(245, 158, 11, 0.12);
  padding: 5px 14px;
  border-radius: 999px;
}
.section-header h2 {
  font-size: clamp(28px, 3.4vw, 38px);
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.7;
}
/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(11, 17, 32, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--secondary) 0%, #f97316 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.5px;
}
.logo-text em {
  font-style: normal;
  color: var(--accent-gold);
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  position: relative;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.7);
  padding: 8px 4px;
  transition: color 0.3s;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--secondary);
  transition: width 0.3s;
}
.nav-link:hover {
  color: #fff;
}
.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}
.nav-link.active {
  color: #fff;
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: 999px;
  transition: var(--transition);
  white-space: nowrap;
  padding: 0 28px;
  height: 44px;
  font-size: 15px;
  line-height: 1;
}
.btn-primary {
  background: linear-gradient(135deg, var(--secondary) 0%, #f97316 100%);
  color: #fff;
  box-shadow: 0 4px 18px rgba(245, 158, 11, 0.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(245, 158, 11, 0.45);
  color: #fff;
}
.btn-outline {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  backdrop-filter: blur(4px);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}
.btn-secondary {
  background: linear-gradient(135deg, #f97316, var(--secondary));
  color: #fff;
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.4);
  color: #fff;
}
.btn-block {
  width: 100%;
}
.btn-sm {
  height: 38px;
  padding: 0 22px;
  font-size: 14px;
}
.btn-lg {
  height: 52px;
  padding: 0 40px;
  font-size: 16px;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  align-items: center;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 640px;
  display: flex;
  align-items: center;
  padding: 80px 0 90px;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.5;
  z-index: 0;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 20% 40%, rgba(15, 23, 42, 0.4) 0%, rgba(11, 17, 32, 0.92) 75%);
  z-index: 1;
}
.hero-inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}
.hero-content {
  color: #fff;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(245, 158, 11, 0.16);
  border: 1px solid rgba(245, 158, 11, 0.35);
  color: var(--accent-gold);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero-badge::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-gold);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}
.hero-content h1 {
  font-size: clamp(36px, 5.6vw, 60px);
  color: #fff;
  letter-spacing: -1px;
  line-height: 1.15;
  margin-bottom: 18px;
  font-weight: 800;
}
.hero-content h1 span {
  background: linear-gradient(120deg, var(--accent-gold), #f97316);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
  max-width: 540px;
  margin-bottom: 32px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 32px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  padding: 5px 14px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.hero-visual {
  display: flex;
  justify-content: flex-end;
}
.version-card {
  width: 100%;
  max-width: 380px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 24px;
  padding: 32px 30px;
  backdrop-filter: blur(20px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  color: #fff;
}
.version-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}
.version-label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  letter-spacing: 1px;
}
.version-badge {
  background: linear-gradient(135deg, #ef4444, #f97316);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 6px;
  letter-spacing: 1px;
}
.version-number {
  font-size: 52px;
  font-weight: 800;
  background: linear-gradient(135deg, #fff, #d1d5db);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 20px;
  letter-spacing: -1px;
}
.version-meta {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 16px;
  margin-bottom: 20px;
}
.meta-row {
  display: flex;
  justify-content: space-between;
  padding: 7px 0;
  font-size: 14px;
}
.meta-row span {
  color: rgba(255, 255, 255, 0.55);
}
.meta-row strong {
  color: rgba(255, 255, 255, 0.95);
  font-weight: 600;
}
.version-rating {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 22px;
  padding: 12px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.rating-stars {
  color: var(--accent-gold);
  font-size: 15px;
  letter-spacing: 2px;
}
.version-rating span {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}
/* ===== Features ===== */
.features {
  background: var(--white);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(245, 158, 11, 0.3);
}
.feature-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.16), rgba(249, 115, 22, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}
.feature-card h3 {
  font-size: 19px;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}
/* ===== Categories ===== */
.categories {
  background: var(--bg);
}
.categories-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.category-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.category-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.category-media {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.category-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.category-card:hover .category-media img {
  transform: scale(1.05);
}
.category-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 17, 32, 0.55) 10%, transparent 60%);
}
.category-content {
  padding: 26px 30px 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.category-tag {
  display: inline-block;
  background: rgba(245, 158, 11, 0.14);
  color: var(--secondary-hover);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
  align-self: flex-start;
}
.category-content h3 {
  font-size: 22px;
  margin-bottom: 10px;
}
.category-content p {
  font-size: 15px;
  color: var(--text-muted);
  margin-bottom: 20px;
  flex: 1;
}
/* ===== News ===== */
.news {
  background: var(--white);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px 28px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(245, 158, 11, 0.25);
}
.news-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.news-cat {
  background: rgba(245, 158, 11, 0.16);
  color: var(--secondary-hover);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
}
.news-time {
  font-size: 13px;
  color: var(--text-muted);
}
.news-card h3 {
  font-size: 18px;
  line-height: 1.5;
  margin-bottom: 10px;
}
.news-card h3 a {
  color: var(--text);
}
.news-card h3 a:hover {
  color: var(--secondary-hover);
}
.news-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.news-link {
  color: var(--secondary-hover);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.news-link:hover {
  gap: 8px;
}
.empty-tip {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
  font-size: 16px;
  background: var(--bg);
  border-radius: var(--radius-md);
  border: 1px dashed var(--border);
}
/* ===== Stats ===== */
.stats {
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: "";
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.08);
  top: -120px;
  right: -80px;
}
.stats::after {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.05);
  bottom: -80px;
  left: 10%;
}
.stats .container {
  position: relative;
  z-index: 2;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-item {
  padding: 24px 16px;
}
.stat-num {
  font-size: clamp(34px, 4vw, 52px);
  font-weight: 800;
  color: #fff;
  letter-spacing: -1px;
  line-height: 1.2;
}
.stat-num span {
  font-size: 0.55em;
  color: var(--accent-gold);
  margin-left: 4px;
}
.stat-label {
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 14px;
  letter-spacing: 2px;
}
/* ===== Featured ===== */
.featured {
  background: var(--bg);
}
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.featured-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.featured-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.featured-card img {
  width: 100%;
  height: 190px;
  object-fit: cover;
}
.featured-card-lg {
  grid-column: span 2;
}
.featured-card-lg img {
  height: 260px;
}
.featured-body {
  padding: 24px 26px 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.featured-meta {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.badge-primary {
  background: rgba(245, 158, 11, 0.16);
  color: var(--secondary-hover);
}
.badge-secondary {
  background: rgba(79, 70, 229, 0.1);
  color: #4f46e5;
}
.badge-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.featured-body h3 {
  font-size: 19px;
  margin-bottom: 8px;
}
.featured-body p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
}
/* ===== FAQ ===== */
.faq {
  background: var(--white);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: var(--transition);
  overflow: hidden;
}
.faq-item[open] {
  border-color: rgba(245, 158, 11, 0.35);
  box-shadow: var(--shadow-sm);
}
.faq-item summary {
  cursor: pointer;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  position: relative;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: color 0.3s;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--secondary);
  transition: transform 0.3s;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.12);
  flex-shrink: 0;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item summary:hover {
  color: var(--secondary-hover);
}
.faq-content {
  padding: 0 24px 20px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.8;
}
/* ===== CTA ===== */
.cta {
  background: var(--bg);
}
.cta-box {
  position: relative;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  border-radius: 28px;
  padding: 64px 48px;
  text-align: center;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.14);
  top: -180px;
  right: -100px;
}
.cta-box::after {
  content: "";
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(245, 158, 11, 0.08);
  bottom: -100px;
  left: 8%;
}
.cta-box h2 {
  font-size: clamp(26px, 3.4vw, 38px);
  color: #fff;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}
.cta-box p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 30px;
  position: relative;
  z-index: 2;
}
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  position: relative;
  z-index: 2;
}
.cta-note {
  margin-top: 20px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
  position: relative;
  z-index: 2;
}
/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.6);
  padding-top: 70px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1.1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo-text {
  font-size: 18px;
}
.footer-brand p {
  margin-top: 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.45);
  max-width: 280px;
}
.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  transition: color 0.3s, padding-left 0.3s;
}
.footer-links a:hover {
  color: var(--accent-gold);
  padding-left: 6px;
}
.footer-contact p {
  padding: 5px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  padding: 24px 0 30px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.35);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}
.footer-bottom a:hover {
  color: var(--accent-gold);
}
/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-visual {
    justify-content: flex-start;
  }
  .version-card {
    max-width: 420px;
  }
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  .featured-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .featured-card-lg {
    grid-column: span 1;
  }
  .featured-card-lg img {
    height: 190px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}
@media (max-width: 768px) {
  :root {
    --section-space: 64px;
  }
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(11, 17, 32, 0.98);
    flex-direction: column;
    align-items: stretch;
    padding: 20px 28px;
    gap: 6px;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.35s ease, opacity 0.3s, visibility 0.3s;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    z-index: 199;
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  .main-nav .nav-link {
    padding: 12px 8px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: rgba(255, 255, 255, 0.8);
  }
  .main-nav .nav-link:last-child {
    border-bottom: none;
  }
  .main-nav .nav-link::after {
    display: none;
  }
  .header-actions .btn {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .hero {
    min-height: auto;
    padding: 70px 0 70px;
  }
  .hero-content h1 {
    font-size: 34px;
  }
  .hero-desc {
    font-size: 15px;
  }
  .hero-actions {
    flex-direction: column;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .version-card {
    max-width: 100%;
    padding: 26px 22px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .categories-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }
  .featured-grid {
    grid-template-columns: 1fr;
  }
  .cta-box {
    padding: 48px 24px;
  }
  .cta-actions {
    flex-direction: column;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
}
@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .header-inner {
    gap: 12px;
  }
  .logo-text {
    font-size: 17px;
  }
  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 16px;
    border-radius: 10px;
  }
  .hero-content h1 {
    font-size: 29px;
  }
  .hero-tags {
    gap: 6px;
  }
  .tag {
    font-size: 12px;
    padding: 4px 10px;
  }
  .section-header h2 {
    font-size: 24px;
  }
  .section-header p {
    font-size: 14px;
  }
  .category-media {
    height: 180px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stat-num {
    font-size: 30px;
  }
  .cta-box h2 {
    font-size: 23px;
  }
  .featured-card-lg img {
    height: 160px;
  }
  .featured-card img {
    height: 160px;
  }
}

/* roulang page: category1 */
/* ============================================
       设计变量与 Reset
    ============================================ */
    :root {
      --primary: #c72e1e;
      --primary-dark: #a82315;
      --primary-light: #e85a4a;
      --primary-glow: rgba(199, 46, 30, 0.25);
      --accent: #ffb347;
      --accent-light: #ffd699;
      --dark-bg: #14181c;
      --dark-panel: #1c2227;
      --bg: #f7f5f2;
      --bg-alt: #efecea;
      --card-bg: #ffffff;
      --text: #1f2328;
      --text-light: #6b7280;
      --text-lighter: #9ca3af;
      --border: #e7e3df;
      --radius-lg: 20px;
      --radius-md: 14px;
      --radius-sm: 8px;
      --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.06);
      --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.12);
      --section-space: 96px;
      --container: 1280px;
      --ease: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
      --font-sans: 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    }

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

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

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

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

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

    button,
    input {
      font-family: inherit;
    }

    .container {
      max-width: var(--container);
      margin: 0 auto;
      padding: 0 32px;
    }

    /* ============================================
       辅助类 / 常用组件
    ============================================ */
    .section-header {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 56px;
    }

    .section-header h2 {
      font-size: clamp(28px, 4vw, 40px);
      font-weight: 900;
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 16px;
      color: var(--text);
    }

    .section-header p {
      color: var(--text-light);
      font-size: 17px;
      line-height: 1.8;
    }

    .section-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--primary-glow);
      color: var(--primary);
      padding: 6px 18px;
      border-radius: 100px;
      font-size: 14px;
      font-weight: 700;
      letter-spacing: 0.04em;
      margin-bottom: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      padding: 14px 30px;
      border-radius: 100px;
      font-size: 16px;
      font-weight: 700;
      line-height: 1.4;
      cursor: pointer;
      border: none;
      transition: var(--ease);
      letter-spacing: 0.02em;
    }

    .btn-primary {
      background: var(--primary);
      color: #fff;
      box-shadow: 0 4px 20px var(--primary-glow);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-3px);
      box-shadow: 0 10px 32px var(--primary-glow);
    }

    .btn-primary:active {
      transform: translateY(-1px);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--border);
      color: var(--text);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: rgba(199, 46, 30, 0.04);
      transform: translateY(-2px);
    }

    .btn-light {
      background: #fff;
      color: var(--text);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    }

    .btn-light:hover {
      transform: translateY(-3px);
      box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    }

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

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

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 14px;
      border-radius: 100px;
      font-size: 13px;
      font-weight: 600;
      background: var(--bg-alt);
      color: var(--text-light);
    }

    .badge-red {
      background: var(--primary);
      color: #fff;
    }

    .badge-accent {
      background: var(--accent);
      color: #1f2328;
    }

    .tag {
      display: inline-block;
      padding: 4px 12px;
      border-radius: 6px;
      background: rgba(0, 0, 0, 0.04);
      color: var(--text-light);
      font-size: 13px;
      font-weight: 500;
      transition: var(--ease);
    }

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

    .card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      transition: var(--ease);
    }

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

    /* ============================================
       Header / 导航
    ============================================ */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.85);
      backdrop-filter: blur(20px);
      -webkit-backdrop-filter: blur(20px);
      border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 80px;
      gap: 24px;
    }

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

    .logo-icon {
      width: 44px;
      height: 44px;
      background: var(--primary);
      color: #fff;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 22px;
      font-weight: 900;
      box-shadow: 0 4px 16px var(--primary-glow);
    }

    .logo-text {
      font-size: 20px;
      font-weight: 900;
      color: var(--text);
      letter-spacing: -0.02em;
      line-height: 1.2;
    }

    .logo-text em {
      font-style: normal;
      color: var(--primary);
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-left: auto;
      padding: 6px;
      background: var(--bg-alt);
      border-radius: 100px;
    }

    .nav-link {
      padding: 10px 22px;
      border-radius: 100px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-light);
      display: inline-flex;
      align-items: center;
      gap: 8px;
      line-height: 1.3;
    }

    .nav-link i {
      font-size: 14px;
      opacity: 0.8;
    }

    .nav-link:hover {
      color: var(--text);
      background: rgba(255, 255, 255, 0.9);
    }

    .nav-link.active {
      background: var(--text);
      color: #fff;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

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

    .btn-sm {
      padding: 10px 22px;
      font-size: 14px;
    }

    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border: none;
      background: var(--bg-alt);
      border-radius: 12px;
      cursor: pointer;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 5px;
    }

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

    /* ============================================
       分类页 Hero Banner
    ============================================ */
    .cat-hero {
      position: relative;
      background: linear-gradient(135deg, #14181c 0%, #1e2429 100%);
      color: #fff;
      padding: 100px 0 80px;
      overflow: hidden;
    }

    .cat-hero::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 60%;
      height: 100%;
      background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
      opacity: 0.25;
      mask-image: linear-gradient(to left, rgba(0,0,0,0.8), transparent);
      -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.8), transparent);
      z-index: 0;
    }

    .cat-hero::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(ellipse at 70% 20%, rgba(199, 46, 30, 0.18) 0%, transparent 60%);
      z-index: 1;
      pointer-events: none;
    }

    .cat-hero .container {
      position: relative;
      z-index: 2;
    }

    .cat-hero-content {
      max-width: 680px;
    }

    .cat-hero .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.15);
      padding: 8px 20px;
      border-radius: 100px;
      font-size: 14px;
      font-weight: 500;
      letter-spacing: 0.05em;
      margin-bottom: 24px;
      color: var(--accent);
    }

    .cat-hero h1 {
      font-size: clamp(36px, 5vw, 56px);
      font-weight: 900;
      line-height: 1.2;
      letter-spacing: -0.03em;
      margin-bottom: 20px;
    }

    .cat-hero h1 span {
      background: linear-gradient(135deg, var(--accent), #ffe0a3);
      -webkit-background-clip: text;
      background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .cat-hero p {
      font-size: 17px;
      color: rgba(255, 255, 255, 0.8);
      line-height: 1.8;
      margin-bottom: 32px;
      max-width: 560px;
    }

    .hero-meta {
      display: flex;
      align-items: center;
      gap: 20px;
      flex-wrap: wrap;
    }

    .hero-meta-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.7);
    }

    .hero-meta-item i {
      width: 32px;
      height: 32px;
      background: rgba(255, 255, 255, 0.1);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent);
      font-size: 14px;
    }

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

    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-light);
    }

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

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

    .breadcrumb .sep {
      opacity: 0.4;
    }

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

    /* ============================================
       版本动态主功能区
    ============================================ */
    .section {
      padding: var(--section-space) 0;
    }

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

    /* 版本更新摘要列表 */
    .version-list {
      display: grid;
      gap: 28px;
    }

    .version-card {
      display: grid;
      grid-template-columns: 1fr 2fr 1fr;
      gap: 28px;
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      padding: 32px;
      align-items: center;
      transition: var(--ease);
      position: relative;
      overflow: hidden;
    }

    .version-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 4px;
      height: 100%;
      background: var(--primary);
      opacity: 0;
      transition: var(--ease);
    }

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

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

    .version-num {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }

    .version-num .ver {
      font-size: 26px;
      font-weight: 900;
      color: var(--primary);
      letter-spacing: -0.02em;
    }

    .version-num .date {
      font-size: 14px;
      color: var(--text-light);
    }

    .version-info h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .version-info p {
      color: var(--text-light);
      font-size: 15px;
      line-height: 1.7;
    }

    .version-actions {
      display: flex;
      flex-direction: column;
      gap: 10px;
      align-items: stretch;
    }

    .version-actions .btn {
      width: 100%;
      padding: 12px 20px;
      font-size: 14px;
    }

    /* ============================================
       分类卡片 / 版本主题分类
    ============================================ */
    .cat-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .cat-card {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--card-bg);
      border: 1px solid var(--border);
      transition: var(--ease);
    }

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

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

    .cat-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }

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

    .cat-card-img::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: linear-gradient(to top, rgba(0,0,0,0.4), transparent);
      z-index: 1;
    }

    .cat-card-body {
      padding: 26px;
    }

    .cat-card-body .tag {
      margin-bottom: 14px;
    }

    .cat-card-body h3 {
      font-size: 20px;
      font-weight: 700;
      margin-bottom: 10px;
    }

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

    .cat-card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      margin-top: 16px;
      font-weight: 600;
      color: var(--primary);
      font-size: 14px;
    }

    /* ============================================
       时间线 / 版本演进
    ============================================ */
    .timeline-wrap {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }

    .timeline-wrap::before {
      content: '';
      position: absolute;
      top: 0;
      left: 50%;
      width: 2px;
      height: 100%;
      background: linear-gradient(to bottom, var(--primary), var(--accent), transparent);
      transform: translateX(-50%);
      opacity: 0.3;
    }

    .timeline-item {
      position: relative;
      display: flex;
      width: 50%;
      padding: 0 48px 48px 0;
    }

    .timeline-item:nth-child(even) {
      margin-left: 50%;
      padding: 0 0 48px 48px;
    }

    .timeline-item:nth-child(odd) {
      justify-content: flex-end;
      text-align: right;
    }

    .timeline-dot {
      position: absolute;
      top: 4px;
      width: 16px;
      height: 16px;
      border-radius: 50%;
      background: var(--primary);
      border: 4px solid var(--bg);
      box-shadow: 0 0 0 2px var(--primary);
      z-index: 2;
    }

    .timeline-item:nth-child(odd) .timeline-dot {
      right: -8px;
    }

    .timeline-item:nth-child(even) .timeline-dot {
      left: -8px;
    }

    .timeline-card {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      padding: 24px;
      border: 1px solid var(--border);
      transition: var(--ease);
    }

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

    .timeline-card .ver-time {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-light);
      margin-bottom: 12px;
      justify-content: flex-end;
    }

    .timeline-item:nth-child(even) .timeline-card .ver-time {
      justify-content: flex-start;
    }

    .timeline-card h3 {
      font-size: 18px;
      font-weight: 700;
      margin-bottom: 8px;
    }

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

    /* ============================================
       图文内容块 / 版本评测
    ============================================ */
    .feature-blocks {
      display: grid;
      gap: 40px;
    }

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

    .feature-block.reverse {
      direction: rtl;
    }

    .feature-block.reverse > * {
      direction: ltr;
    }

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

    .feature-img img {
      width: 100%;
      height: 360px;
      object-fit: cover;
    }

    .feature-img::after {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(199, 46, 30, 0.15) 0%, transparent 60%);
    }

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

    .feature-content .badge {
      margin-bottom: 16px;
    }

    .feature-content h3 {
      font-size: clamp(22px, 3vw, 28px);
      font-weight: 800;
      line-height: 1.4;
      margin-bottom: 18px;
      letter-spacing: -0.02em;
    }

    .feature-content p {
      color: var(--text-light);
      line-height: 1.8;
      font-size: 15px;
      margin-bottom: 20px;
    }

    .feature-stats {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      margin-top: 24px;
    }

    .stat-item {
      text-align: center;
      padding: 16px;
      background: var(--bg-alt);
      border-radius: var(--radius-md);
    }

    .stat-item .num {
      font-size: 28px;
      font-weight: 900;
      color: var(--primary);
      line-height: 1.2;
    }

    .stat-item .label {
      font-size: 13px;
      color: var(--text-light);
      margin-top: 4px;
    }

    /* ============================================
       资讯 / 文章卡片列表
    ============================================ */
    .article-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .article-card {
      background: var(--card-bg);
      border-radius: var(--radius-lg);
      border: 1px solid var(--border);
      overflow: hidden;
      transition: var(--ease);
    }

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

    .article-card-img {
      height: 200px;
      overflow: hidden;
      position: relative;
    }

    .article-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.6s ease;
    }

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

    .article-card-body {
      padding: 26px;
    }

    .article-card-body .article-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      margin-bottom: 14px;
      font-size: 13px;
      color: var(--text-light);
    }

    .article-card-body h3 {
      font-size: 18px;
      font-weight: 700;
      line-height: 1.5;
      margin-bottom: 10px;
    }

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

    .article-card-footer {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .article-card-footer a {
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
    }

    /* ============================================
       FAQ
    ============================================ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
      display: grid;
      gap: 16px;
    }

    .faq-item {
      background: var(--card-bg);
      border-radius: var(--radius-md);
      border: 1px solid var(--border);
      overflow: hidden;
      transition: var(--ease);
    }

    .faq-item:hover {
      border-color: var(--primary-light);
    }

    .faq-question {
      padding: 24px 32px;
      font-size: 17px;
      font-weight: 700;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
    }

    .faq-question .icon {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--bg-alt);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      color: var(--primary);
      transition: var(--ease);
      flex-shrink: 0;
    }

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

    .faq-answer {
      padding: 0 32px;
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
    }

    .faq-answer p {
      padding-bottom: 24px;
      color: var(--text-light);
      line-height: 1.8;
      font-size: 15px;
    }

    /* ============================================
       CTA
    ============================================ */
    .cta-section {
      background: var(--dark-bg);
      color: #fff;
      padding: 80px 0;
      position: relative;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      top: 0;
      right: 0;
      width: 50%;
      height: 100%;
      background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
      opacity: 0.15;
    }

    .cta-inner {
      position: relative;
      z-index: 2;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 40px;
      flex-wrap: wrap;
    }

    .cta-title {
      font-size: clamp(24px, 3vw, 32px);
      font-weight: 800;
      line-height: 1.4;
      margin-bottom: 12px;
    }

    .cta-sub {
      color: rgba(255, 255, 255, 0.7);
      font-size: 16px;
    }

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

    /* ============================================
       页脚
    ============================================ */
    .site-footer {
      background: var(--dark-bg);
      color: #a3adb8;
      padding: 70px 0 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 48px;
      padding-bottom: 48px;
    }

    .footer-brand .logo {
      margin-bottom: 20px;
    }

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

    .footer-brand p {
      color: var(--text-lighter);
      line-height: 1.8;
      font-size: 15px;
      max-width: 300px;
    }

    .footer-links h4,
    .footer-contact h4 {
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      margin-bottom: 20px;
    }

    .footer-links a {
      display: block;
      color: var(--text-lighter);
      padding: 5px 0;
      font-size: 14px;
      line-height: 1.8;
    }

    .footer-links a:hover {
      color: var(--accent);
      padding-left: 6px;
    }

    .footer-contact p {
      color: var(--text-lighter);
      padding: 5px 0;
      font-size: 14px;
      line-height: 1.8;
    }

    .footer-contact p i {
      width: 20px;
      color: var(--primary-light);
      margin-right: 6px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 24px 0;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 14px;
      color: var(--text-lighter);
    }

    .footer-bottom a {
      color: var(--text-lighter);
    }

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

    /* ============================================
       页码/分页
    ============================================ */
    .pagination {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 48px;
    }

    .page-link {
      width: 46px;
      height: 46px;
      display: flex;
      align-items: center;
      justify-content: center;
      border-radius: 12px;
      background: var(--card-bg);
      border: 1px solid var(--border);
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      transition: var(--ease);
    }

    .page-link:hover {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }

    .page-link.active {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }

    /* ============================================
       响应式
    ============================================ */
    @media (max-width: 1024px) {
      :root {
        --section-space: 76px;
      }

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

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

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

      .version-card {
        grid-template-columns: 1fr 1.5fr;
      }

      .version-actions {
        grid-column: span 2;
        flex-direction: row;
      }
    }

    @media (max-width: 768px) {
      .container {
        padding: 0 20px;
      }

      :root {
        --section-space: 60px;
      }

      .header-inner {
        height: 68px;
      }

      .main-nav {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px;
        border-radius: 0;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        transform: translateY(-110%);
        opacity: 0;
        pointer-events: none;
        transition: var(--ease);
        z-index: 99;
        gap: 4px;
      }

      .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
      }

      .main-nav .nav-link {
        width: 100%;
        padding: 12px 20px;
      }

      .nav-toggle {
        display: flex;
      }

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

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

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

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

      .cat-hero {
        padding: 60px 0 50px;
      }

      .cat-hero h1 {
        font-size: 34px;
      }

      .version-card {
        grid-template-columns: 1fr;
        padding: 24px;
        gap: 16px;
      }

      .version-actions {
        grid-column: span 1;
        flex-direction: column;
      }

      .cat-cards,
      .article-grid {
        grid-template-columns: 1fr;
      }

      .feature-block {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .feature-block.reverse {
        direction: ltr;
      }

      .feature-img img {
        height: 260px;
      }

      .timeline-wrap::before {
        left: 8px;
      }

      .timeline-item {
        width: 100%;
        padding: 0 0 32px 32px;
        text-align: left !important;
        margin-left: 0 !important;
        justify-content: flex-start !important;
      }

      .timeline-item:nth-child(even) {
        margin-left: 0;
        padding: 0 0 32px 32px;
      }

      .timeline-item .timeline-dot {
        left: 0 !important;
        right: auto !important;
      }

      .timeline-item:nth-child(odd) .timeline-card .ver-time {
        justify-content: flex-start;
      }

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

      .footer-brand p {
        max-width: none;
      }

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

      .section-header {
        margin-bottom: 36px;
      }

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

      .feature-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
      }

      .stat-item {
        padding: 12px 8px;
      }

      .stat-item .num {
        font-size: 22px;
      }
    }

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

      .logo-icon {
        width: 38px;
        height: 38px;
        font-size: 18px;
      }

      .cat-hero h1 {
        font-size: 26px;
      }

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

      .hero-meta {
        gap: 10px;
      }

      .hero-meta-item {
        font-size: 12px;
      }

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

      .btn {
        padding: 12px 22px;
        font-size: 14px;
      }

      .article-card-body {
        padding: 20px;
      }

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

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

      .version-num .ver {
        font-size: 22px;
      }
    }

/* roulang page: article */
:root{
    --primary:#2563eb;
    --primary-dark:#1e40af;
    --primary-light:#dbeafe;
    --accent:#10b981;
    --accent-light:#d1fae5;
    --ink:#0f172a;
    --text:#334155;
    --muted:#64748b;
    --bg:#f5f7fb;
    --card:#ffffff;
    --line:#e2e8f0;
    --radius:16px;
    --radius-lg:24px;
    --shadow-sm:0 2px 10px rgba(15,23,42,.06);
    --shadow-md:0 14px 34px rgba(15,23,42,.1);
    --shadow-lg:0 28px 64px rgba(15,23,42,.14);
    --container:1200px;
    --header-h:78px;
}
*{
    box-sizing:border-box;
    margin:0;
    padding:0;
}
html{
    scroll-behavior:smooth;
}
body{
    font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.75;
    font-size:16px;
    -webkit-font-smoothing:antialiased;
}
a{
    color:inherit;
    text-decoration:none;
    transition:color .25s ease;
}
img{
    max-width:100%;
    display:block;
}
ul,ol{
    list-style:none;
}
button,input{
    font-family:inherit;
    font-size:inherit;
    border:none;
    outline:none;
    background:none;
}
i{
    font-style:normal;
}
.container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 28px;
}

/* ===== 按钮 ===== */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    padding:12px 26px;
    border-radius:999px;
    font-weight:600;
    font-size:15px;
    line-height:1.4;
    cursor:pointer;
    transition:all .25s ease;
    border:2px solid transparent;
}
.btn i{
    font-size:16px;
}
.btn-primary{
    background:var(--primary);
    color:#fff;
    box-shadow:0 8px 22px rgba(37,99,235,.28);
}
.btn-primary:hover{
    background:var(--primary-dark);
    transform:translateY(-2px);
    box-shadow:0 12px 30px rgba(37,99,235,.34);
}
.btn-light{
    background:#fff;
    color:var(--ink);
    box-shadow:0 8px 22px rgba(2,6,23,.18);
}
.btn-light:hover{
    background:#f1f5f9;
    transform:translateY(-2px);
}
.btn-outline{
    border-color:rgba(255,255,255,.55);
    color:#fff;
}
.btn-outline:hover{
    background:rgba(255,255,255,.14);
    border-color:#fff;
}
.btn-sm{
    padding:8px 20px;
    font-size:14px;
}
.btn:active{
    transform:translateY(0);
}

/* ===== 标签/徽章 ===== */
.badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:5px 14px;
    border-radius:999px;
    font-size:13px;
    font-weight:600;
}
.badge-primary{
    background:var(--primary-light);
    color:var(--primary-dark);
}
.badge-green{
    background:var(--accent-light);
    color:#047857;
}

/* ===== Header ===== */
.site-header{
    position:sticky;
    top:0;
    z-index:100;
    height:var(--header-h);
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(14px);
    -webkit-backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(226,232,240,.78);
    box-shadow:0 4px 24px rgba(15,23,42,.04);
}
.header-inner{
    height:100%;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
}
.logo{
    display:inline-flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
}
.logo-icon{
    width:42px;
    height:42px;
    border-radius:12px;
    background:linear-gradient(135deg,#2563eb,#06b6d4);
    color:#fff;
    font-size:20px;
    font-weight:800;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    box-shadow:0 6px 16px rgba(37,99,235,.3);
}
.logo-text{
    font-size:19px;
    font-weight:700;
    color:var(--ink);
    letter-spacing:.5px;
    line-height:1.2;
    white-space:nowrap;
}
.logo-text em{
    font-style:normal;
    color:var(--primary);
}
.main-nav{
    display:flex;
    align-items:center;
    gap:36px;
}
.nav-link{
    font-size:15px;
    font-weight:600;
    color:var(--muted);
    position:relative;
    padding:6px 0;
    transition:color .25s ease;
}
.nav-link::after{
    content:"";
    position:absolute;
    left:0;
    bottom:-2px;
    width:0;
    height:3px;
    border-radius:3px;
    background:var(--primary);
    transition:width .3s ease;
}
.nav-link:hover{
    color:var(--ink);
}
.nav-link:hover::after{
    width:100%;
}
.nav-link.active{
    color:var(--primary);
}
.nav-link.active::after{
    width:100%;
}
.header-actions{
    display:flex;
    align-items:center;
    gap:14px;
}
.nav-toggle{
    display:none;
    flex-direction:column;
    justify-content:center;
    gap:5px;
    width:42px;
    height:42px;
    border-radius:12px;
    background:none;
    cursor:pointer;
    align-items:center;
}
.nav-toggle span{
    display:block;
    width:20px;
    height:2px;
    background:var(--ink);
    border-radius:2px;
    transition:all .3s ease;
}
.nav-toggle.active span:nth-child(1){
    transform:rotate(45deg) translate(5px,5px);
}
.nav-toggle.active span:nth-child(2){
    opacity:0;
}
.nav-toggle.active span:nth-child(3){
    transform:rotate(-45deg) translate(5px,-5px);
}

/* ===== 面包屑与文章 Hero ===== */
.article-hero{
    position:relative;
    min-height:420px;
    display:flex;
    align-items:flex-end;
    background:linear-gradient(135deg,rgba(2,6,23,.9),rgba(29,78,216,.78)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding:120px 0 56px;
    color:#fff;
    border-bottom:4px solid rgba(255,255,255,.08);
}
.article-hero::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(to top,rgba(2,6,23,.45),transparent 60%);
    pointer-events:none;
}
.article-hero .container{
    position:relative;
    z-index:2;
}
.breadcrumb{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:14px;
    color:rgba(255,255,255,.72);
    margin-bottom:18px;
    flex-wrap:wrap;
}
.breadcrumb a{
    color:rgba(255,255,255,.85);
    transition:color .2s ease;
}
.breadcrumb a:hover{
    color:#fff;
}
.breadcrumb span{
    opacity:.6;
}
.article-category-badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:6px 18px;
    border-radius:999px;
    background:rgba(255,255,255,.14);
    backdrop-filter:blur(8px);
    border:1px solid rgba(255,255,255,.2);
    font-size:14px;
    font-weight:600;
    margin-bottom:16px;
    letter-spacing:.5px;
}
.article-hero h1{
    font-size:clamp(28px,4vw,48px);
    font-weight:800;
    line-height:1.25;
    max-width:860px;
    letter-spacing:.5px;
    margin-bottom:20px;
    text-shadow:0 4px 20px rgba(2,6,23,.3);
}
.article-meta{
    display:flex;
    align-items:center;
    gap:22px;
    flex-wrap:wrap;
    font-size:14px;
    color:rgba(255,255,255,.78);
}
.meta-item{
    display:inline-flex;
    align-items:center;
    gap:7px;
}
.meta-item i{
    color:rgba(255,255,255,.6);
}

/* ===== 文章主体布局 ===== */
.article-section{
    padding:56px 0;
}
.article-layout{
    display:grid;
    grid-template-columns:minmax(0,1fr) 360px;
    gap:40px;
    align-items:start;
}
.article-main{
    min-width:0;
}
.article-card{
    background:var(--card);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-sm);
    padding:40px 48px;
    border:1px solid rgba(226,232,240,.6);
}
.article-content{
    font-size:17px;
    line-height:1.9;
    color:#2d3a4b;
}
.article-content h2{
    font-size:26px;
    font-weight:800;
    color:var(--ink);
    margin:36px 0 16px;
    padding-bottom:10px;
    border-bottom:2px solid var(--primary-light);
}
.article-content h3{
    font-size:21px;
    font-weight:700;
    color:var(--ink);
    margin:28px 0 12px;
}
.article-content h4{
    font-size:18px;
    font-weight:700;
    color:var(--ink);
    margin:22px 0 10px;
}
.article-content p{
    margin-bottom:20px;
}
.article-content ul,
.article-content ol{
    margin:16px 0 22px;
    padding-left:22px;
}
.article-content ul li{
    list-style:disc;
    margin-bottom:8px;
}
.article-content ol li{
    list-style:decimal;
    margin-bottom:8px;
}
.article-content blockquote{
    margin:24px 0;
    padding:18px 24px;
    background:var(--primary-light);
    border-left:4px solid var(--primary);
    border-radius:0 12px 12px 0;
    color:var(--ink);
    font-weight:500;
}
.article-content img{
    border-radius:var(--radius);
    margin:24px 0;
    box-shadow:var(--shadow-sm);
}
.article-content a{
    color:var(--primary);
    border-bottom:1px solid rgba(37,99,235,.3);
}
.article-content a:hover{
    color:var(--primary-dark);
    border-color:var(--primary-dark);
}
.article-content code{
    background:#f1f5f9;
    padding:3px 8px;
    border-radius:6px;
    font-size:15px;
    color:#be185d;
}

/* ===== 文章附加信息 ===== */
.article-extras{
    margin-top:36px;
    padding-top:28px;
    border-top:1px solid var(--line);
}
.tag-list{
    display:flex;
    flex-wrap:wrap;
    gap:10px;
    margin-bottom:22px;
}
.tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:6px 16px;
    border-radius:999px;
    background:#f1f5f9;
    border:1px solid var(--line);
    font-size:13px;
    font-weight:600;
    color:var(--muted);
    transition:all .25s ease;
}
.tag:hover{
    background:var(--primary-light);
    border-color:var(--primary);
    color:var(--primary-dark);
}
.tag i{
    font-size:12px;
}
.share-line{
    display:flex;
    align-items:center;
    gap:14px;
    flex-wrap:wrap;
}
.share-line span{
    font-size:14px;
    font-weight:600;
    color:var(--muted);
}
.share-btn{
    width:38px;
    height:38px;
    border-radius:50%;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    background:#f1f5f9;
    color:var(--muted);
    font-size:15px;
    transition:all .25s ease;
}
.share-btn:hover{
    background:var(--primary);
    color:#fff;
    transform:translateY(-2px);
    box-shadow:0 8px 18px rgba(37,99,235,.25);
}
.extra-box{
    display:flex;
    gap:16px;
    margin-top:28px;
    padding:22px 24px;
    background:linear-gradient(135deg,#f0f7ff,#e0f2fe);
    border-radius:var(--radius);
    border:1px solid rgba(37,99,235,.12);
}
.extra-icon{
    width:44px;
    height:44px;
    flex-shrink:0;
    border-radius:12px;
    background:var(--primary);
    color:#fff;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
}
.extra-box p{
    font-size:14px;
    color:var(--text);
    margin:0;
}
.extra-box strong{
    color:var(--ink);
    display:block;
    margin-bottom:4px;
}

/* ===== 文章缺失 ===== */
.article-missing{
    text-align:center;
    padding:80px 40px;
    background:var(--card);
    border-radius:var(--radius-lg);
    box-shadow:var(--shadow-sm);
    border:1px solid var(--line);
}
.article-missing i{
    font-size:56px;
    color:#cbd5e1;
    display:block;
    margin-bottom:20px;
}
.article-missing h2{
    font-size:28px;
    font-weight:800;
    color:var(--ink);
    margin-bottom:12px;
}
.article-missing p{
    color:var(--muted);
    margin-bottom:28px;
}

/* ===== 侧边栏 ===== */
.article-side{
    position:sticky;
    top:calc(var(--header-h) + 24px);
    display:flex;
    flex-direction:column;
    gap:24px;
}
.side-card{
    background:var(--card);
    border-radius:var(--radius);
    box-shadow:var(--shadow-sm);
    border:1px solid var(--line);
    padding:26px;
}
.side-card-title{
    font-size:18px;
    font-weight:800;
    color:var(--ink);
    margin-bottom:18px;
    display:flex;
    align-items:center;
    gap:8px;
}
.side-card-title i{
    color:var(--primary);
    font-size:16px;
}
.side-link-list{
    display:flex;
    flex-direction:column;
    gap:6px;
}
.side-link-list a{
    display:flex;
    align-items:center;
    gap:10px;
    padding:10px 12px;
    border-radius:10px;
    font-size:14px;
    font-weight:500;
    color:var(--text);
    transition:all .25s ease;
}
.side-link-list a i{
    font-size:13px;
    color:var(--primary);
}
.side-link-list a:hover{
    background:var(--primary-light);
    color:var(--primary-dark);
    padding-left:16px;
}
.side-cover{
    border-radius:14px;
    overflow:hidden;
    position:relative;
    margin-bottom:14px;
}
.side-cover img{
    width:100%;
    height:170px;
    object-fit:cover;
}
.side-cover .cover-tag{
    position:absolute;
    top:12px;
    left:12px;
    background:rgba(2,6,23,.62);
    color:#fff;
    padding:4px 12px;
    border-radius:999px;
    font-size:12px;
    backdrop-filter:blur(4px);
}
.side-note{
    font-size:14px;
    color:var(--muted);
    line-height:1.7;
}
.side-card .btn{
    width:100%;
    margin-top:16px;
}
.service-point{
    display:flex;
    gap:12px;
    margin-bottom:16px;
}
.service-point i{
    width:36px;
    height:36px;
    flex-shrink:0;
    border-radius:10px;
    background:var(--accent-light);
    color:#047857;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:14px;
}
.service-point p{
    font-size:13px;
    color:var(--muted);
    line-height:1.5;
}
.service-point strong{
    display:block;
    color:var(--ink);
    font-size:14px;
    margin-bottom:2px;
}

/* ===== FAQ ===== */
.faq-section{
    padding:72px 0;
    background:#fff;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
}
.section-head{
    text-align:center;
    margin-bottom:42px;
}
.section-title{
    font-size:clamp(26px,3vw,36px);
    font-weight:800;
    color:var(--ink);
    letter-spacing:.5px;
    margin-bottom:12px;
}
.section-sub{
    font-size:16px;
    color:var(--muted);
    max-width:620px;
    margin:0 auto;
}
.faq-grid{
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:20px;
}
.faq-item{
    background:var(--bg);
    border:1px solid var(--line);
    border-radius:var(--radius);
    overflow:hidden;
    transition:box-shadow .25s ease,transform .25s ease;
}
.faq-item:hover{
    box-shadow:var(--shadow-md);
    transform:translateY(-2px);
}
.faq-item summary{
    display:flex;
    align-items:center;
    gap:14px;
    padding:20px 24px;
    cursor:pointer;
    font-size:16px;
    font-weight:700;
    color:var(--ink);
    list-style:none;
    position:relative;
    padding-right:48px;
}
.faq-item summary::-webkit-details-marker{
    display:none;
}
.faq-item summary i{
    width:32px;
    height:32px;
    flex-shrink:0;
    border-radius:10px;
    background:var(--primary-light);
    color:var(--primary);
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:14px;
}
.faq-item summary::after{
    content:"\f078";
    font-family:"Font Awesome 6 Free";
    font-weight:600;
    position:absolute;
    right:22px;
    color:var(--muted);
    transition:transform .3s ease;
}
.faq-item[open] summary::after{
    transform:rotate(180deg);
    color:var(--primary);
}
.faq-answer{
    padding:0 24px 22px 70px;
    font-size:14px;
    color:var(--text);
    line-height:1.8;
}

/* ===== CTA ===== */
.cta-section{
    padding:72px 0;
    background:linear-gradient(135deg,rgba(2,6,23,.92),rgba(29,78,216,.85)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    text-align:center;
    color:#fff;
}
.cta-inner{
    max-width:760px;
    margin:0 auto;
}
.cta-title{
    font-size:clamp(26px,3.4vw,40px);
    font-weight:800;
    line-height:1.3;
    margin-bottom:14px;
}
.cta-sub{
    font-size:16px;
    color:rgba(255,255,255,.78);
    margin-bottom:30px;
}
.cta-actions{
    display:flex;
    justify-content:center;
    gap:18px;
    flex-wrap:wrap;
}

/* ===== 相关推荐 ===== */
.related-section{
    padding:72px 0;
}
.related-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
}
.related-card{
    background:var(--card);
    border-radius:var(--radius);
    overflow:hidden;
    box-shadow:var(--shadow-sm);
    border:1px solid var(--line);
    transition:all .3s ease;
    display:block;
}
.related-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow-lg);
}
.related-card .card-img{
    position:relative;
    overflow:hidden;
    height:200px;
}
.related-card .card-img img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}
.related-card:hover .card-img img{
    transform:scale(1.06);
}
.related-card .card-body{
    padding:22px 24px;
}
.related-card .card-body h3{
    font-size:18px;
    font-weight:700;
    color:var(--ink);
    margin-bottom:8px;
    line-height:1.5;
}
.related-card .card-body p{
    font-size:14px;
    color:var(--muted);
    line-height:1.7;
    margin-bottom:16px;
}
.related-card .card-meta{
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-size:13px;
    color:var(--muted);
}
.related-card .card-meta a{
    color:var(--primary);
    font-weight:600;
}
.related-card .card-meta a i{
    margin-left:4px;
    transition:transform .25s ease;
}
.related-card:hover .card-meta a i{
    transform:translateX(4px);
}

/* ===== Footer ===== */
.site-footer{
    background:#0b1220;
    color:#94a3b8;
    padding:64px 0 0;
    font-size:14px;
}
.footer-grid{
    display:grid;
    grid-template-columns:1.4fr 1fr 1fr 1.2fr;
    gap:40px;
    padding-bottom:40px;
}
.footer-brand .logo-text{
    color:#fff;
}
.footer-brand p{
    margin-top:16px;
    line-height:1.8;
    color:#94a3b8;
    max-width:320px;
}
.footer-links h4,
.footer-contact h4{
    color:#fff;
    font-size:16px;
    font-weight:700;
    margin-bottom:18px;
}
.footer-links a{
    display:block;
    color:#94a3b8;
    padding:5px 0;
    font-size:14px;
    transition:color .25s ease,padding-left .25s ease;
}
.footer-links a:hover{
    color:#fff;
    padding-left:6px;
}
.footer-contact p{
    margin-bottom:10px;
    line-height:1.7;
}
.footer-bottom{
    border-top:1px solid rgba(148,163,184,.16);
    padding:22px 0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
    font-size:13px;
    color:#64748b;
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
    .article-layout{
        grid-template-columns:1fr;
    }
    .article-side{
        position:static;
    }
    .related-grid{
        grid-template-columns:repeat(2,1fr);
    }
    .footer-grid{
        grid-template-columns:repeat(2,1fr);
    }
}
@media (max-width:768px){
    .container{
        padding:0 20px;
    }
    .main-nav{
        position:fixed;
        top:var(--header-h);
        left:16px;
        right:16px;
        background:#fff;
        border-radius:var(--radius);
        box-shadow:var(--shadow-lg);
        flex-direction:column;
        align-items:stretch;
        gap:4px;
        padding:16px;
        display:none;
        z-index:99;
    }
    .main-nav.open{
        display:flex;
    }
    .nav-link{
        padding:12px 14px;
        border-radius:10px;
        font-size:15px;
        border-left:3px solid transparent;
    }
    .nav-link:hover{
        background:var(--bg);
    }
    .nav-link.active{
        background:var(--primary-light);
        border-left-color:var(--primary);
        color:var(--primary-dark);
    }
    .nav-link::after{
        display:none;
    }
    .nav-toggle{
        display:flex;
    }
    .article-hero{
        min-height:380px;
        padding-top:110px;
    }
    .article-card{
        padding:28px 24px;
    }
    .article-content{
        font-size:16px;
    }
    .faq-grid{
        grid-template-columns:1fr;
    }
    .related-grid{
        grid-template-columns:1fr;
    }
    .cta-actions{
        flex-direction:column;
        align-items:center;
    }
    .cta-actions .btn{
        width:100%;
        max-width:360px;
    }
}
@media (max-width:520px){
    .container{
        padding:0 16px;
    }
    .header-inner{
        gap:12px;
    }
    .logo-text{
        font-size:17px;
    }
    .logo-icon{
        width:36px;
        height:36px;
        font-size:17px;
        border-radius:10px;
    }
    .header-actions .btn-sm{
        display:none;
    }
    .article-hero{
        min-height:340px;
        padding:100px 0 40px;
    }
    .article-hero h1{
        font-size:26px;
    }
    .article-meta{
        gap:14px;
        font-size:13px;
    }
    .article-card{
        padding:22px 18px;
        border-radius:16px;
    }
    .article-extras{
        padding-top:20px;
    }
    .extra-box{
        flex-direction:column;
    }
    .faq-answer{
        padding-left:24px;
    }
    .footer-grid{
        grid-template-columns:1fr;
    }
    .footer-bottom{
        flex-direction:column;
        text-align:center;
    }
}

/* roulang page: category2 */
:root {
  --primary: #1a2744;
  --primary-2: #243557;
  --primary-3: #31477a;
  --accent: #c9a15a;
  --accent-light: #e3ca92;
  --accent-bg: #fbf6ec;
  --bg: #f4f6fb;
  --bg-alt: #ebeff7;
  --bg-deep: #0d162b;
  --card: #ffffff;
  --text: #1a2132;
  --text-body: #414b62;
  --text-muted: #78829a;
  --border: #e3e8f2;
  --success: #3eaf7c;
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shadow-sm: 0 4px 16px rgba(18, 30, 60, 0.06);
  --shadow-md: 0 12px 36px rgba(18, 30, 60, 0.1);
  --shadow-lg: 0 28px 70px rgba(18, 30, 60, 0.16);
  --transition: 0.32s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-body: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-head: "Songti SC", "Noto Serif SC", "Source Han Serif SC", "SimSun", Georgia, serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button, input { font: inherit; border: none; outline: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 92px 0; }
.section-alt { background: var(--bg-alt); }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 6px 24px rgba(18, 30, 60, 0.08); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo-icon {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary-2), var(--primary-3));
  color: #fff; font-size: 20px; font-weight: 800;
  box-shadow: 0 6px 16px rgba(26, 39, 68, 0.28);
}
.logo-text { font-family: var(--font-head); font-size: 22px; font-weight: 700; color: var(--primary); letter-spacing: 0.5px; white-space: nowrap; }
.logo-text em { font-style: normal; color: var(--accent); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-body);
  transition: all var(--transition);
}
.nav-link:hover { color: var(--primary); background: var(--bg-alt); }
.nav-link.active { color: var(--primary); background: var(--accent-bg); }
.nav-link.active::after { content: ""; display: block; height: 2px; width: 18px; margin: 2px auto 0; border-radius: 2px; background: var(--accent); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px; font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  line-height: 1.6;
}
.btn-primary { background: linear-gradient(135deg, var(--primary-2), var(--primary-3)); color: #fff; box-shadow: 0 8px 20px rgba(26, 39, 68, 0.22); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(26, 39, 68, 0.3); }
.btn-primary:active { transform: translateY(0); box-shadow: 0 4px 12px rgba(26, 39, 68, 0.2); }
.btn-accent { background: linear-gradient(135deg, var(--accent), #c89045); color: #fff; box-shadow: 0 8px 22px rgba(201, 161, 90, 0.3); }
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201, 161, 90, 0.4); }
.btn-accent:active { transform: translateY(0); }
.btn-ghost { background: transparent; color: #fff; border: 1px solid rgba(255, 255, 255, 0.4); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; }
.btn-sm { padding: 8px 20px; font-size: 14px; }
.btn:focus-visible, .nav-link:focus-visible, .logo:focus-visible { outline: 3px solid rgba(201, 161, 90, 0.55); outline-offset: 2px; }
.nav-toggle { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 40px; padding: 8px; background: transparent; cursor: pointer; border-radius: 10px; }
.nav-toggle span { display: block; height: 2px; border-radius: 2px; background: var(--primary); transition: all var(--transition); }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Page Banner ===== */
.page-banner { position: relative; padding: 110px 0 100px; overflow: hidden; background: var(--bg-deep); }
.banner-bg { position: absolute; inset: 0; background: url('/assets/images/backpic/back-1.png') center/cover no-repeat; opacity: 0.4; }
.banner-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(13, 22, 43, 0.95) 0%, rgba(13, 22, 43, 0.8) 45%, rgba(13, 22, 43, 0.45) 100%); }
.banner-content { position: relative; z-index: 2; }
.banner-columns { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 60px; align-items: center; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.65); margin-bottom: 22px; }
.breadcrumb a { color: rgba(255, 255, 255, 0.8); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb .sep { opacity: 0.5; }
.banner-title { font-family: var(--font-head); font-size: 46px; line-height: 1.25; color: #fff; font-weight: 700; margin-bottom: 20px; }
.banner-title em { font-style: normal; color: var(--accent-light); }
.banner-desc { font-size: 17px; line-height: 1.85; color: rgba(255, 255, 255, 0.75); max-width: 560px; margin-bottom: 32px; }
.banner-search { display: flex; gap: 12px; max-width: 460px; }
.banner-search input {
  flex: 1; height: 52px; padding: 0 20px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #fff; font-size: 15px;
  transition: all var(--transition);
}
.banner-search input::placeholder { color: rgba(255, 255, 255, 0.5); }
.banner-search input:focus { background: rgba(255, 255, 255, 0.18); border-color: var(--accent); box-shadow: 0 0 0 4px rgba(201, 161, 90, 0.18); }
.side-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
}
.side-badge { display: inline-block; padding: 5px 14px; background: var(--accent); color: #1a2132; font-size: 13px; font-weight: 700; border-radius: 999px; margin-bottom: 16px; }
.side-card h4 { color: #fff; font-size: 20px; margin-bottom: 12px; font-family: var(--font-head); }
.side-card p { color: rgba(255, 255, 255, 0.7); font-size: 14px; line-height: 1.7; margin-bottom: 22px; }
.side-card .btn { width: 100%; }

/* ===== Stats ===== */
.stats-section { padding: 60px 0; margin-top: -40px; position: relative; z-index: 5; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 32px 20px; text-align: center; box-shadow: var(--shadow-sm); transition: all var(--transition); }
.stat-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stat-num { display: block; font-family: var(--font-head); font-size: 40px; font-weight: 800; color: var(--primary); line-height: 1.2; margin-bottom: 6px; }
.stat-num i { font-style: normal; color: var(--accent); }
.stat-label { font-size: 14px; color: var(--text-muted); }

/* ===== Section Head ===== */
.section-head { text-align: center; max-width: 680px; margin: 0 auto 56px; }
.section-tag { display: inline-block; padding: 5px 16px; background: var(--accent-bg); color: var(--accent); font-size: 13px; font-weight: 700; border-radius: 999px; letter-spacing: 0.5px; margin-bottom: 14px; }
.section-title { font-family: var(--font-head); font-size: 36px; font-weight: 700; color: var(--text); line-height: 1.3; margin-bottom: 14px; }
.section-desc { font-size: 16px; color: var(--text-muted); line-height: 1.8; }
.section-head.split { display: flex; justify-content: space-between; align-items: flex-end; text-align: left; max-width: none; margin-bottom: 44px; gap: 24px; }
.section-head.split .section-tag { margin-bottom: 8px; }
.link-more { display: inline-flex; align-items: center; gap: 6px; font-size: 15px; font-weight: 600; color: var(--primary); padding: 10px 22px; border-radius: 999px; border: 1px solid var(--border); background: var(--card); transition: all var(--transition); flex-shrink: 0; }
.link-more:hover { border-color: var(--accent); color: var(--accent); transform: translateX(4px); }

/* ===== Sub Categories ===== */
.subcats-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.sub-card { background: var(--card); border-radius: var(--radius-lg); border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow-sm); transition: all var(--transition); }
.sub-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.sub-cover { position: relative; height: 200px; overflow: hidden; }
.sub-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.sub-card:hover .sub-cover img { transform: scale(1.06); }
.sub-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(13, 22, 43, 0.55), transparent 60%); }
.sub-tag { position: absolute; left: 18px; bottom: 14px; z-index: 2; display: inline-block; padding: 4px 14px; background: var(--accent); color: #1a2132; font-size: 13px; font-weight: 700; border-radius: 999px; }
.sub-info { padding: 26px 24px 28px; }
.sub-info h3 { font-size: 20px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.sub-info p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.sub-meta { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: var(--text-muted); }
.sub-count { display: inline-flex; align-items: center; gap: 6px; }
.sub-count::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--success); }

/* ===== Guides ===== */
.guides-section { background: var(--bg-alt); }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.guide-card { background: var(--card); border-radius: var(--radius-lg); border: 1px solid var(--border); overflow: hidden; box-shadow: var(--shadow-sm); transition: all var(--transition); display: flex; flex-direction: column; }
.guide-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.guide-cover { position: relative; height: 200px; overflow: hidden; }
.guide-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.guide-card:hover .guide-cover img { transform: scale(1.05); }
.guide-cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(13, 22, 43, 0.35), transparent 55%); }
.guide-badge { position: absolute; top: 14px; left: 14px; z-index: 2; padding: 4px 12px; background: rgba(13, 22, 43, 0.72); color: #fff; font-size: 12px; font-weight: 600; border-radius: 999px; backdrop-filter: blur(6px); }
.guide-body { padding: 26px 24px; flex: 1; display: flex; flex-direction: column; }
.guide-body h3 { font-size: 18px; font-weight: 700; color: var(--text); line-height: 1.45; margin-bottom: 12px; transition: color var(--transition); }
.guide-card:hover .guide-body h3 { color: var(--primary-3); }
.guide-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 20px; flex: 1; }
.guide-meta { display: flex; align-items: center; gap: 18px; padding-top: 16px; border-top: 1px solid var(--border); font-size: 13px; color: var(--text-muted); }
.guide-meta span { display: inline-flex; align-items: center; gap: 5px; }

/* ===== Flow ===== */
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; position: relative; }
.flow-item { text-align: center; padding: 38px 22px; background: var(--card); border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all var(--transition); position: relative; }
.flow-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.flow-num {
  width: 56px; height: 56px; margin: 0 auto 20px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary-2), var(--primary-3));
  color: #fff; font-family: var(--font-head); font-size: 22px; font-weight: 800;
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(26, 39, 68, 0.22);
  position: relative;
  z-index: 2;
}
.flow-item h3 { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.flow-item p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.flow-line { position: absolute; top: 47px; left: calc(50% + 48px); width: calc(100% - 96px); height: 2px; background: linear-gradient(90deg, var(--accent), var(--accent-light)); opacity: 0.3; z-index: 1; }

/* ===== Ranking ===== */
.ranking-layout { display: grid; grid-template-columns: 1.6fr 0.9fr; gap: 40px; align-items: start; }
.rank-list { display: flex; flex-direction: column; gap: 0; }
.rank-item { display: flex; align-items: center; gap: 20px; padding: 24px 22px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 16px; transition: all var(--transition); }
.rank-item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: var(--accent); }
.rank-num { width: 44px; height: 44px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; background: var(--bg-alt); border-radius: 12px; font-family: var(--font-head); font-size: 19px; font-weight: 800; color: var(--text-muted); transition: all var(--transition); }
.rank-item:nth-child(1) .rank-num { background: linear-gradient(135deg, #e6c787, var(--accent)); color: #fff; }
.rank-item:nth-child(2) .rank-num { background: linear-gradient(135deg, #c0ccdb, #8fa3bd); color: #fff; }
.rank-item:nth-child(3) .rank-num { background: linear-gradient(135deg, #d4a17e, #b2764e); color: #fff; }
.rank-info { flex: 1; }
.rank-info h3 { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.rank-info p { font-size: 13px; color: var(--text-muted); }
.rank-tag { flex-shrink: 0; padding: 4px 14px; background: var(--accent-bg); color: var(--accent); font-size: 13px; font-weight: 600; border-radius: 999px; }
.aside-card { background: var(--bg-deep); border-radius: var(--radius-lg); padding: 34px 28px; color: #fff; position: sticky; top: 100px; }
.aside-card .side-badge { background: var(--accent); color: #1a2132; }
.aside-card h4 { font-family: var(--font-head); font-size: 22px; margin-bottom: 14px; }
.aside-card p { color: rgba(255, 255, 255, 0.7); font-size: 14px; line-height: 1.75; margin-bottom: 22px; }
.aside-card .btn { width: 100%; }
.aside-list { margin-bottom: 24px; }
.aside-list li { display: flex; align-items: center; gap: 10px; padding: 8px 0; color: rgba(255, 255, 255, 0.8); font-size: 14px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.aside-list li::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); flex-shrink: 0; }

/* ===== FAQ ===== */
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; max-width: 980px; margin: 0 auto; }
.faq-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 28px 28px 24px; transition: all var(--transition); }
.faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.faq-q { font-size: 16px; font-weight: 700; color: var(--text); margin-bottom: 10px; padding-left: 34px; position: relative; }
.faq-q::before { content: "Q"; position: absolute; left: 0; top: 0; width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; background: var(--accent-bg); color: var(--accent); font-size: 13px; font-weight: 800; border-radius: 6px; }
.faq-a { font-size: 14px; color: var(--text-muted); line-height: 1.8; padding-left: 34px; }

/* ===== CTA ===== */
.cta-section { padding: 40px 0 110px; }
.cta-box { position: relative; background: linear-gradient(135deg, var(--bg-deep), var(--primary-2)); border-radius: var(--radius-lg); overflow: hidden; padding: 68px 60px; text-align: center; color: #fff; }
.cta-box::before { content: ""; position: absolute; inset: 0; background: url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity: 0.18; }
.cta-box::after { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(13, 22, 43, 0.85), rgba(36, 53, 87, 0.65)); }
.cta-box > * { position: relative; z-index: 2; }
.cta-box h2 { font-family: var(--font-head); font-size: 34px; font-weight: 700; margin-bottom: 14px; }
.cta-box p { font-size: 16px; color: rgba(255, 255, 255, 0.75); max-width: 560px; margin: 0 auto 32px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: var(--bg-deep); color: rgba(255, 255, 255, 0.65); padding: 76px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-brand .logo .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 18px; max-width: 300px; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; font-family: var(--font-head); }
.footer-links a { display: block; padding: 6px 0; font-size: 14px; color: rgba(255, 255, 255, 0.6); transition: all var(--transition); }
.footer-links a:hover { color: var(--accent-light); transform: translateX(4px); }
.footer-contact p { font-size: 14px; padding: 5px 0; color: rgba(255, 255, 255, 0.6); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding: 26px 0; font-size: 13px; color: rgba(255, 255, 255, 0.45); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .section { padding: 72px 0; }
  .banner-columns { grid-template-columns: 1fr 0.7fr; gap: 40px; }
  .banner-title { font-size: 38px; }
  .guide-grid { grid-template-columns: repeat(2, 1fr); }
  .flow-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .flow-line { display: none; }
  .ranking-layout { grid-template-columns: 1fr; }
  .aside-card { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 768px) {
  .header-inner { height: 68px; }
  .main-nav {
    position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(255, 255, 255, 0.98);
    flex-direction: column; align-items: stretch; gap: 4px;
    padding: 16px 24px 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    transform: translateY(-16px); opacity: 0; pointer-events: none;
    transition: all var(--transition);
  }
  .main-nav.nav-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { padding: 14px 20px; border-radius: 12px; }
  .nav-toggle { display: flex; }
  .page-banner { padding: 80px 0 120px; }
  .banner-columns { grid-template-columns: 1fr; gap: 36px; }
  .banner-title { font-size: 32px; }
  .banner-search input { flex: 1; height: 46px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .subcats-grid { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }
  .guide-grid { grid-template-columns: 1fr; max-width: 520px; margin: 0 auto; }
  .section-head.split { flex-direction: column; align-items: flex-start; }
  .faq-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 48px 28px; }
  .cta-box h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .logo-text { font-size: 18px; }
  .logo-icon { width: 36px; height: 36px; font-size: 17px; }
  .nav-link { padding: 12px 16px; }
  .banner-title { font-size: 28px; }
  .banner-desc { font-size: 15px; }
  .banner-search { flex-direction: column; }
  .banner-search input { width: 100%; }
  .banner-search .btn { width: 100%; }
  .side-card { padding: 26px 20px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 14px; }
  .stat-card { padding: 24px 12px; }
  .stat-num { font-size: 32px; }
  .section-title { font-size: 28px; }
  .flow-grid { grid-template-columns: 1fr; }
  .rank-item { flex-wrap: wrap; gap: 12px; }
  .rank-tag { width: 100%; text-align: center; }
  .cta-actions .btn { width: 100%; }
  .footer-bottom p { font-size: 12px; }
}