/* roulang page: index */
:root {
  --primary: #1a1f36;
  --primary-dark: #0f1218;
  --primary-light: #232a45;
  --accent: #ff4d2e;
  --accent-hover: #e63d1f;
  --amber: #ffb03a;
  --bg-dark: #0f1218;
  --bg-mist: #f8f9fc;
  --bg-card: #ffffff;
  --text-main: #1a1f36;
  --text-weak: #6b7280;
  --text-invert: #f1f5f9;
  --text-faint: #94a3b8;
  --border-light: rgba(15,18,24,0.08);
  --border-dark: rgba(255,255,255,0.08);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(15,18,24,0.06);
  --shadow-md: 0 8px 24px rgba(15,18,24,0.08);
  --shadow-lg: 0 18px 40px rgba(15,18,24,0.12);
  --shadow-accent: 0 8px 30px rgba(255,77,46,0.25);
  --font-main: -apple-system, BlinkMacSystemFont, "Inter", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  --transition: all .25s cubic-bezier(.4,0,.2,1);
  --container: 1200px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
body {
  font-family: var(--font-main);
  line-height: 1.7;
  color: var(--text-main);
  background: var(--bg-mist);
  -webkit-font-smoothing: antialiased;
}
a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
button {
  font-family: inherit;
  border: none;
  cursor: pointer;
  background: none;
}
input, textarea {
  font-family: inherit;
  outline: none;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.section-wrap {
  padding: 96px 0;
}
.section-head {
  max-width: 720px;
  margin-bottom: 52px;
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(255,77,46,0.08);
  border: 1px solid rgba(255,77,46,0.15);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 18px;
}
.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 0 3px rgba(255,77,46,0.2);
}
.section-title {
  font-size: 34px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--text-main);
  margin-bottom: 16px;
}
.section-sub {
  font-size: 16px;
  color: var(--text-weak);
  line-height: 1.75;
}

/* ===== 导航栏 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15,18,24,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: var(--transition);
}
.site-header.scrolled {
  background: rgba(15,18,24,0.97);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}
.nav-container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 20px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--accent), #ff7a45);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 17px;
  box-shadow: var(--shadow-accent);
}
.brand-text {
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}
.brand-text em {
  font-style: normal;
  color: var(--amber);
}
.nav-center {
  flex: 1;
  display: flex;
  justify-content: center;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.72);
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}
.nav-link.active {
  color: #fff;
  background: rgba(255,255,255,0.12);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1);
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 100px;
  padding: 8px 14px;
  width: 200px;
  transition: var(--transition);
}
.search-box:focus-within {
  border-color: var(--accent);
  background: rgba(255,255,255,0.12);
  box-shadow: 0 0 0 3px rgba(255,77,46,0.15);
}
.search-box i {
  color: rgba(255,255,255,0.5);
  font-size: 13px;
}
.search-box input {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 14px;
  width: 100%;
}
.search-box input::placeholder {
  color: rgba(255,255,255,0.4);
}
.search-box kbd {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 6px;
  padding: 2px 7px;
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  font-family: inherit;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 100px;
  padding: 12px 26px;
  transition: var(--transition);
  white-space: nowrap;
  border: 1px solid transparent;
}
.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 36px rgba(255,77,46,0.35);
}
.btn-outline-light {
  border-color: rgba(255,255,255,0.3);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-2px);
}
.btn-outline-dark {
  border-color: rgba(26,31,54,0.2);
  color: var(--text-main);
  background: transparent;
}
.btn-outline-dark:hover {
  background: rgba(26,31,54,0.04);
  border-color: rgba(26,31,54,0.4);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 18px;
  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-section {
  position: relative;
  padding: 140px 0 100px;
  background-image: linear-gradient(135deg, rgba(10,12,16,0.96), rgba(26,31,54,0.88)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  overflow: hidden;
}
.hero-section::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -80px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(255,77,46,0.18) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: 100px;
  padding: 8px 18px;
  font-size: 14px;
  color: rgba(255,255,255,0.85);
  margin-bottom: 26px;
}
.hero-badge .dot {
  width: 8px;
  height: 8px;
  background: var(--amber);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,176,58,0.5); }
  50% { box-shadow: 0 0 0 8px rgba(255,176,58,0); }
}
.hero-title {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
}
.hero-title .highlight {
  background: linear-gradient(120deg, var(--amber), #ffd08a);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-title .accent-word {
  color: var(--accent);
  position: relative;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,0.75);
  margin-bottom: 38px;
  max-width: 540px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}
.hero-metrics {
  display: flex;
  gap: 42px;
  flex-wrap: wrap;
  padding-top: 36px;
  border-top: 1px solid rgba(255,255,255,0.1);
}
.metric-item .metric-value {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.metric-item .metric-label {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  margin-top: 4px;
}
.hero-visual {
  position: relative;
}
.hero-card-stack {
  position: relative;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 28px;
  backdrop-filter: blur(8px);
}
.hero-card-stack::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: 20px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255,255,255,0.2), transparent 40%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}
.hc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.hc-title {
  font-size: 15px;
  font-weight: 600;
  color: rgba(255,255,255,0.8);
}
.hc-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: #4ade80;
  background: rgba(74,222,128,0.12);
  padding: 4px 12px;
  border-radius: 100px;
}
.hc-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 12px;
  transition: var(--transition);
}
.hc-item:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.14);
  transform: translateX(4px);
}
.hc-icon {
  width: 42px;
  height: 42px;
  background: rgba(255,77,46,0.15);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--accent);
  font-size: 16px;
}
.hc-content {
  flex: 1;
  min-width: 0;
}
.hc-content .hc-name {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hc-content .hc-desc {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.hc-arrow {
  color: rgba(255,255,255,0.4);
  font-size: 12px;
}

/* ===== 数据统计 ===== */
.stats-section {
  padding: 0;
  background: var(--primary-dark);
  border-top: 1px solid rgba(255,255,255,0.05);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  position: relative;
  z-index: 3;
  margin-top: -1px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: rgba(255,255,255,0.02);
}
.stat-cell {
  text-align: center;
  padding: 44px 24px;
  border-right: 1px solid rgba(255,255,255,0.05);
  transition: var(--transition);
}
.stat-cell:hover {
  background: rgba(255,255,255,0.03);
}
.stat-cell:last-child {
  border-right: none;
}
.stat-num {
  font-size: 40px;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff 30%, var(--amber));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.5);
  margin-top: 8px;
}

/* ===== 核心服务 ===== */
.feature-section {
  padding: 96px 0;
  background: var(--bg-mist);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 18px;
  padding: 34px 30px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
}
.feature-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover::after {
  opacity: 1;
}
.f-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 22px;
  position: relative;
}
.f-icon.bg-red-soft {
  background: rgba(255,77,46,0.12);
  color: var(--accent);
}
.f-icon.bg-amber-soft {
  background: rgba(255,176,58,0.14);
  color: #d97706;
}
.f-icon.bg-blue-soft {
  background: rgba(59,130,246,0.1);
  color: #2563eb;
}
.feature-card h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.feature-card p {
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ===== 分类入口 ===== */
.category-section {
  padding: 96px 0;
  background: var(--primary-dark);
  background-image: linear-gradient(rgba(15,18,24,0.96), rgba(15,18,24,0.96)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
}
.category-section .section-title {
  color: #fff;
}
.category-section .section-sub {
  color: rgba(255,255,255,0.55);
}
.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.category-card {
  position: relative;
  border-radius: 18px;
  overflow: hidden;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  transition: var(--transition);
  min-height: 260px;
  display: flex;
  align-items: flex-end;
}
.category-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}
.category-card .cat-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
  transition: var(--transition);
}
.category-card:hover .cat-img {
  opacity: 0.65;
  transform: scale(1.04);
}
.category-card .cat-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,12,16,0.95), rgba(10,12,16,0.15) 70%);
}
.category-card .cat-body {
  position: relative;
  z-index: 2;
  padding: 30px;
  width: 100%;
}
.category-card .cat-label {
  display: inline-block;
  background: rgba(255,77,46,0.2);
  border: 1px solid rgba(255,77,46,0.3);
  color: #ff8a6a;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 12px;
}
.category-card h3 {
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}
.category-card p {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 16px;
}
.category-card .cat-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--amber);
  font-size: 14px;
  font-weight: 600;
}
.category-card .cat-link i {
  transition: var(--transition);
}
.category-card:hover .cat-link i {
  transform: translateX(5px);
}

/* ===== 资讯列表 ===== */
.latest-section {
  padding: 96px 0;
  background: var(--bg-mist);
}
.latest-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 44px;
  flex-wrap: wrap;
}
.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.post-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-5px);
}
.post-card-img {
  height: 200px;
  width: 100%;
  object-fit: cover;
  background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
}
.post-card-body {
  padding: 26px 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.post-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 14px;
}
.post-card-meta .tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: rgba(255,77,46,0.08);
  border: 1px solid rgba(255,77,46,0.15);
  border-radius: 100px;
  padding: 4px 12px;
}
.post-card-meta .post-date {
  font-size: 13px;
  color: var(--text-faint);
}
.post-card h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
}
.post-card h3 a {
  color: var(--text-main);
}
.post-card h3 a:hover {
  color: var(--accent);
}
.post-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  flex: 1;
}
.post-card-footer {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border-light);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.post-card-footer .read-more {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.post-card-footer .read-more:hover {
  color: var(--accent);
}
.post-card-footer .read-more i {
  transition: var(--transition);
}
.post-card-footer .read-more:hover i {
  transform: translateX(4px);
}
.empty-posts {
  grid-column: 1 / -1;
  background: rgba(255,255,255,0.7);
  border: 1px dashed var(--border-light);
  border-radius: 16px;
  padding: 48px 24px;
  text-align: center;
  color: var(--text-weak);
  font-size: 15px;
}

/* ===== 流程 ===== */
.process-section {
  padding: 96px 0;
  background: #fff;
}
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  counter-reset: step;
  position: relative;
}
.process-steps::before {
  content: '';
  position: absolute;
  top: 32px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--border-light), var(--border-light) 8px, transparent 8px, transparent 16px);
}
.process-step {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 16px;
}
.step-num {
  width: 64px;
  height: 64px;
  margin: 0 auto 22px;
  background: #fff;
  border: 2px solid var(--border-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: var(--accent);
  transition: var(--transition);
  box-shadow: 0 0 0 8px #fff;
}
.process-step:hover .step-num {
  border-color: var(--accent);
  box-shadow: 0 0 0 8px rgba(255,77,46,0.06);
}
.step-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
}
.step-desc {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
}

/* ===== FAQ ===== */
.faq-section {
  padding: 96px 0;
  background: var(--bg-mist);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(26,31,54,0.15);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  position: relative;
}
.faq-question::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  margin-left: auto;
  color: var(--text-faint);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-question::after {
  transform: rotate(180deg);
  color: var(--accent);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 24px 22px;
  font-size: 15px;
  color: var(--text-weak);
  line-height: 1.8;
  border-top: 1px solid transparent;
}
.faq-item.open .faq-answer-inner {
  border-top-color: var(--border-light);
  padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
  padding: 20px 0 96px;
  background: var(--bg-mist);
}
.cta-box {
  position: relative;
  background-image: linear-gradient(135deg, rgba(15,18,24,0.95), rgba(26,31,54,0.85)), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  border-radius: 24px;
  padding: 70px;
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(255,77,46,0.25), transparent 70%);
  border-radius: 50%;
}
.cta-box::after {
  content: '';
  position: absolute;
  bottom: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255,176,58,0.2), transparent 70%);
  border-radius: 50%;
}
.cta-box > * {
  position: relative;
  z-index: 2;
}
.cta-box h2 {
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 18px;
}
.cta-box p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.6);
  padding: 64px 0 32px;
  border-top: 1px solid rgba(255,255,255,0.05);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .brand-logo {
  margin-bottom: 18px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.7;
  max-width: 340px;
}
.footer-links h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.footer-links ul {
  list-style: none;
}
.footer-links ul li {
  margin-bottom: 10px;
}
.footer-links ul li a {
  font-size: 14px;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}
.footer-links ul li a:hover {
  color: var(--amber);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
}
.footer-bottom .footer-domain {
  font-size: 13px;
  color: rgba(255,255,255,0.35);
  letter-spacing: .04em;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 38px;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .posts-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
  .process-steps::before {
    display: none;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-cell {
    border-bottom: 1px solid rgba(255,255,255,0.05);
  }
  .stat-cell:nth-child(2) {
    border-right: none;
  }
  .stat-cell:nth-child(3) {
    border-bottom: none;
  }
  .stat-cell:nth-child(4) {
    border-bottom: none;
  }
  .section-wrap {
    padding: 72px 0;
  }
  .search-box {
    display: none;
  }
}

@media (max-width: 768px) {
  .nav-center {
    display: none;
  }
  .nav-center.mobile-open {
    display: flex;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--primary-dark);
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding: 16px 24px 24px;
    flex-direction: column;
    align-items: stretch;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
  }
  .main-nav {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .nav-link {
    padding: 14px 16px;
    border-radius: 10px;
    font-size: 16px;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-right .btn-sm {
    display: none;
  }
  .hero-section {
    padding: 80px 0 64px;
  }
  .hero-title {
    font-size: 32px;
  }
  .hero-metrics {
    gap: 26px;
  }
  .section-title {
    font-size: 28px;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .posts-grid {
    grid-template-columns: 1fr;
  }
  .category-grid {
    grid-template-columns: 1fr;
  }
  .process-steps {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-box {
    padding: 44px 28px;
  }
  .cta-box h2 {
    font-size: 26px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .section-wrap {
    padding: 56px 0;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .nav-container {
    padding: 0 18px;
  }
  .hero-title {
    font-size: 27px;
  }
  .brand-text {
    font-size: 17px;
  }
  .brand-icon {
    width: 36px;
    height: 36px;
    font-size: 15px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stat-num {
    font-size: 28px;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .latest-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .hero-metrics {
    gap: 18px;
    padding-top: 24px;
  }
  .metric-item .metric-value {
    font-size: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
  html {
    scroll-behavior: auto;
  }
}

/* roulang page: category1 */
:root {
            --primary: #ff4d24;
            --primary-dark: #d9361a;
            --accent: #00e0a4;
            --dark-bg: #0b0f1a;
            --dark-panel: #121826;
            --card-bg: #ffffff;
            --text-main: #1a2333;
            --text-weak: #6b7a90;
            --border: #e5eaf0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.12);
            --spacing-section: 84px;
            --spacing-section-sm: 48px;
        }

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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: #f7f8fc;
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

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

        /* ---- 导航 ---- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.03);
        }

        .nav-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .nav-left {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 20px;
            color: var(--text-main);
            line-height: 1.2;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), #ff7a45);
            color: #fff;
            border-radius: 10px;
            font-size: 17px;
            box-shadow: 0 4px 12px rgba(255, 77, 36, 0.28);
        }

        .brand-text {
            letter-spacing: -0.2px;
        }

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

        .nav-center {
            display: flex;
            align-items: center;
        }

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

        .nav-link {
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: #4a5568;
            border-radius: 999px;
            transition: all 0.25s ease;
            text-decoration: none;
        }

        .nav-link:hover {
            background: #f0f2f6;
            color: var(--primary);
        }

        .nav-link.active {
            background: rgba(255, 77, 36, 0.08);
            color: var(--primary);
            font-weight: 600;
        }

        .nav-right {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 8px;
            background: #f0f2f6;
            border-radius: 999px;
            padding: 7px 14px;
            border: 1px solid transparent;
            transition: border-color 0.25s, box-shadow 0.25s;
            width: 200px;
        }

        .search-box i {
            font-size: 13px;
            color: #8a94a6;
        }

        .search-box input {
            flex: 1;
            background: transparent;
            font-size: 14px;
            color: var(--text-main);
            min-width: 0;
        }

        .search-box input::placeholder {
            color: #9aa3b2;
        }

        .search-box kbd {
            background: #fff;
            border: 1px solid #dce0e8;
            border-radius: 4px;
            font-size: 11px;
            padding: 1px 6px;
            color: #8a94a6;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
        }

        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 77, 36, 0.15);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 14px;
            border-radius: 999px;
            padding: 10px 22px;
            cursor: pointer;
            transition: all 0.25s ease;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(255, 77, 36, 0.25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(255, 77, 36, 0.32);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 4px 12px rgba(255, 77, 36, 0.22);
        }

        .btn-outline {
            background: transparent;
            border-color: #d0d5e0;
            color: var(--text-main);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(255, 77, 36, 0.03);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: #f0f2f6;
            cursor: pointer;
        }

        .nav-toggle span {
            width: 18px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .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 ---- */
        .category-hero {
            background: var(--dark-bg);
            padding: 88px 0 64px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            opacity: 0.3;
            z-index: 0;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 15, 26, 0.92) 0%, rgba(11, 15, 26, 0.65) 50%, rgba(11, 15, 26, 0.85) 100%);
            z-index: 1;
        }

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

        .category-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 77, 36, 0.15);
            border: 1px solid rgba(255, 77, 36, 0.35);
            color: #ff8a66;
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }

        .category-hero h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.5px;
            margin-bottom: 18px;
        }

        .category-hero h1 span {
            color: var(--primary);
        }

        .category-hero p {
            font-size: 17px;
            color: #c3cbd9;
            max-width: 620px;
            margin-bottom: 32px;
        }

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

        .btn-light {
            background: #fff;
            color: var(--text-main);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
        }

        .btn-light:hover {
            background: #f0f2f6;
            transform: translateY(-1px);
        }

        .btn-ghost-light {
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: #e8ecf2;
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: rgba(255, 255, 255, 0.4);
            color: #fff;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 52px;
            padding-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            max-width: 640px;
        }

        .hero-stat {
            text-align: left;
        }

        .hero-stat strong {
            font-size: 26px;
            font-weight: 800;
            color: #fff;
            display: block;
            line-height: 1.2;
        }

        .hero-stat span {
            font-size: 13px;
            color: #8f9bb3;
        }

        .hero-stat strong i {
            font-style: normal;
            color: var(--accent);
        }

        /* ---- 板块通用 ---- */
        .section {
            padding: var(--spacing-section) 0;
        }

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.06em;
            background: rgba(255, 77, 36, 0.06);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            letter-spacing: -0.3px;
            line-height: 1.25;
            color: var(--text-main);
            margin-bottom: 14px;
        }

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

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

        .step-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 30px 24px;
            border: 1px solid var(--border);
            position: relative;
            transition: all 0.3s ease;
            box-shadow: var(--shadow);
        }

        .step-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 77, 36, 0.3);
        }

        .step-num {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #ff7a45);
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            box-shadow: 0 4px 12px rgba(255, 77, 36, 0.25);
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
        }

        /* ---- 内容卡片 ---- */
        .cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .content-card {
            background: #fff;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.35s ease;
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(255, 77, 36, 0.35);
        }

        .card-media {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
        }

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

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

        .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 15, 26, 0.85);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

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

        .card-body .card-tag {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }

        .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .card-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }

        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            margin-top: auto;
        }

        .card-footer .date {
            font-size: 13px;
            color: #8a94a6;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .card-footer .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap 0.2s ease;
        }

        .card-link:hover {
            gap: 10px;
        }

        /* ---- 深色面板 / 安全提示 ---- */
        .dark-panel {
            background: var(--dark-bg);
            border-radius: 24px;
            padding: 48px;
            position: relative;
            overflow: hidden;
        }

        .dark-panel::before {
            content: "";
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(255, 77, 36, 0.25) 0%, transparent 70%);
        }

        .tips-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .tip-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 14px;
            padding: 24px;
            transition: background 0.3s ease, border-color 0.3s ease;
        }

        .tip-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 77, 36, 0.35);
        }

        .tip-item .tip-icon {
            width: 38px;
            height: 38px;
            background: rgba(255, 77, 36, 0.15);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ff8a66;
            font-size: 16px;
            margin-bottom: 14px;
        }

        .tip-item h3 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .tip-item p {
            color: #9aa7bd;
            font-size: 14px;
            line-height: 1.65;
        }

        /* ---- 数据区块 ---- */
        .data-band {
            background: linear-gradient(135deg, #0b0f1a, #121826);
            padding: 56px 0;
            border-radius: 24px;
            overflow: hidden;
            position: relative;
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding: 0 48px;
        }

        .data-item {
            text-align: center;
            position: relative;
        }

        .data-item::after {
            content: "";
            position: absolute;
            right: -16px;
            top: 20%;
            height: 60%;
            width: 1px;
            background: rgba(255, 255, 255, 0.1);
        }

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

        .data-num {
            font-size: 38px;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .data-num span {
            color: var(--primary);
        }

        .data-label {
            font-size: 14px;
            color: #8f9bb3;
        }

        /* ---- FAQ ---- */
        .faq-grid {
            max-width: 840px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: #fff;
            border-radius: 14px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(255, 77, 36, 0.4);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 26px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            gap: 16px;
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: #f0f2f6;
            font-size: 13px;
            color: var(--text-weak);
            transition: all 0.3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
        }

        .faq-answer p {
            padding: 0 26px 24px;
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* ---- CTA ---- */
        .cta-section {
            background: var(--dark-bg);
            border-radius: 24px;
            padding: 64px 48px;
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
        }

        .cta-section .container {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .cta-section p {
            color: #b6c0d2;
            font-size: 17px;
            max-width: 600px;
            margin: 0 auto 32px;
        }

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

        /* ---- 页脚 ---- */
        .site-footer {
            background: #0b0f1a;
            color: #8f9bb3;
            padding-top: 64px;
            font-size: 14px;
        }

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

        .footer-brand .brand-logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #8f9bb3;
            max-width: 360px;
        }

        .footer-links h4 {
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-links ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            gap: 10px;
        }

        .footer-links a {
            color: #8f9bb3;
            transition: color 0.2s ease;
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 24px 0 32px;
            font-size: 13px;
            color: #6b7a90;
        }

        .footer-domain {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.08);
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 12px;
            font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
            color: #8f9bb3;
        }

        /* ---- 搜索框 ---- */
        .guide-table {
            background: #f8f9fc;
            border-radius: 16px;
            padding: 32px;
            border: 1px solid var(--border);
            margin-top: 32px;
        }

        .guide-table h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .guide-table ul {
            list-style: none;
            display: grid;
            gap: 12px;
        }

        .guide-table li {
            display: flex;
            align-items: baseline;
            gap: 12px;
            font-size: 15px;
        }

        .guide-table li .li-dot {
            width: 7px;
            height: 7px;
            background: var(--primary);
            border-radius: 50%;
            flex-shrink: 0;
            margin-top: 8px;
        }

        /* ---- 响应式 ---- */
        @media (max-width: 1024px) {
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .cards-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
                padding: 0 32px;
            }
            .data-item:nth-child(2)::after {
                display: none;
            }
            .nav-container {
                gap: 12px;
            }
            .search-box {
                width: 160px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 56px;
                --spacing-section-sm: 32px;
            }

            .nav-center {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
                display: none;
                flex-direction: column;
                padding: 20px 24px;
            }

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

            .main-nav {
                flex-direction: column;
                gap: 6px;
                width: 100%;
            }

            .nav-link {
                display: block;
                width: 100%;
                text-align: left;
                padding: 12px 16px;
                border-radius: 10px;
            }

            .nav-toggle {
                display: flex;
            }

            .search-box {
                display: none;
            }

            .nav-container {
                height: 64px;
            }

            .category-hero {
                padding: 60px 0 40px;
            }

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

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

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

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

            .dark-panel {
                padding: 32px 24px;
            }

            .data-grid {
                grid-template-columns: 1fr 1fr;
                padding: 0 24px;
            }

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

            .cta-section {
                padding: 48px 24px;
            }

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

            .footer-bottom {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-stats {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .hero-stats .hero-stat {
                display: flex;
                align-items: baseline;
                justify-content: space-between;
            }

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

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

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

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

            .brand-text {
                font-size: 18px;
            }

            .hero-actions .btn {
                padding: 12px 20px;
                font-size: 14px;
            }

            .btn-sm {
                display: none;
            }
        }

/* roulang page: article */
:root {
  --primary: #e8590c;
  --primary-dark: #d0450a;
  --primary-light: #ff922b;
  --accent: #fa5252;
  --dark: #0f1115;
  --dark-2: #131620;
  --dark-3: #1a1f2e;
  --light-bg: #f6f7f9;
  --white: #ffffff;
  --text-main: #1f2328;
  --text-sub: #4b5563;
  --text-muted: #9ca3af;
  --border: #e6e8eb;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 6px 20px rgba(0,0,0,0.08);
  --shadow-lg: 0 16px 48px rgba(0,0,0,0.1);
  --container: 1200px;
  --transition: all 0.25s ease;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: ui-sans-serif, system-ui, -apple-system, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  background: var(--light-bg);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
input, button { font-family: inherit; }
ul, ol { list-style: none; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-sm { max-width: 880px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 44px; padding: 0 24px; border-radius: 10px;
  font-size: 15px; font-weight: 600; border: 1px solid transparent;
  cursor: pointer; transition: var(--transition); white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(232,89,12,0.28); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 8px 22px rgba(232,89,12,0.36); }
.btn-primary:focus-visible { outline: 3px solid rgba(232,89,12,0.35); outline-offset: 2px; }
.btn-outline { background: transparent; border-color: #d1d5db; color: var(--text-main); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: rgba(232,89,12,0.05); }
.btn-outline:focus-visible { outline: 3px solid rgba(232,89,12,0.2); outline-offset: 2px; }
.btn-sm { height: 36px; padding: 0 16px; font-size: 14px; border-radius: 8px; }
.btn-lg { height: 52px; padding: 0 32px; font-size: 16px; border-radius: 12px; }

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 12px; border-radius: 999px; background: #fff0e9;
  color: var(--primary); font-size: 13px; font-weight: 600; letter-spacing: 0.02em;
}
.badge-red { background: #fce8e8; color: var(--accent); }
.badge-dark { background: #101216; color: #fff; }
.badge-outline { background: transparent; border: 1px solid rgba(255,255,255,0.35); color: #e5e7eb; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 16px rgba(15,17,21,0.05);
}
.site-header::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
}
.nav-container {
  max-width: var(--container); margin: 0 auto; padding: 0 24px;
  height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--text-main); }
.brand-icon {
  width: 36px; height: 36px; display: flex; align-items: center; justify-content: center;
  border-radius: 10px; background: linear-gradient(135deg, #e8590c, #fa5252);
  color: #fff; font-size: 16px; box-shadow: 0 4px 12px rgba(232,89,12,0.3);
}
.brand-text { letter-spacing: -0.01em; }
.brand-text em { font-style: normal; color: var(--primary); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 8px 16px; border-radius: 8px; font-size: 15px; font-weight: 500;
  color: var(--text-sub); transition: var(--transition);
}
.nav-link:hover { background: #f3f4f6; color: var(--text-main); }
.nav-link.active { background: #fff0e9; color: var(--primary); font-weight: 600; }
.search-box {
  display: flex; align-items: center; gap: 8px; height: 38px; padding: 0 12px;
  border: 1px solid var(--border); border-radius: 10px; background: #f9fafb;
  min-width: 220px; transition: var(--transition);
}
.search-box:focus-within { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(232,89,12,0.12); }
.search-box i { color: var(--text-muted); font-size: 13px; }
.search-box input { flex: 1; border: none; outline: none; background: transparent; font-size: 14px; color: var(--text-main); }
.search-box input::placeholder { color: var(--text-muted); }
.search-box kbd {
  background: #f3f4f6; border: 1px solid var(--border); border-radius: 5px;
  padding: 2px 6px; font-size: 11px; color: var(--text-muted); white-space: nowrap;
}
.nav-toggle {
  display: none; width: 42px; height: 42px; flex-direction: column; gap: 5px;
  justify-content: center; align-items: center; background: #fff;
  border: 1px solid var(--border); border-radius: 10px; cursor: pointer; padding: 10px;
  transition: var(--transition);
}
.nav-toggle:hover { border-color: var(--primary); }
.nav-toggle span { width: 20px; height: 2px; background: var(--text-main); border-radius: 2px; transition: var(--transition); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Mobile nav ===== */
@media (max-width: 768px) {
  .nav-container { padding: 0 16px; }
  .nav-center {
    position: fixed; top: 72px; left: 0; right: 0; z-index: 999;
    background: #fff; border-bottom: 1px solid var(--border);
    padding: 12px 20px; box-shadow: 0 12px 32px rgba(0,0,0,0.08);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: var(--transition); max-height: calc(100vh - 72px); overflow-y: auto;
  }
  .nav-center.nav-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .main-nav { flex-direction: column; align-items: stretch; gap: 4px; }
  .nav-link { padding: 12px 16px; border-radius: 8px; display: block; }
  .nav-link.active { background: #fff0e9; }
  .search-box { display: none; }
  .nav-toggle { display: flex; }
  .nav-right .btn-sm { display: none; }
}

/* ===== Article Hero ===== */
.article-hero {
  position: relative; padding: 72px 0 80px;
  background: linear-gradient(rgba(15,17,21,0.93), rgba(15,17,21,0.86)),
              url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #fff; overflow: hidden;
}
.article-hero-grid {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr; gap: 24px;
}
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #9ca3af; flex-wrap: wrap; }
.breadcrumb a { color: #d1d5db; transition: color 0.2s; }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb i { font-size: 10px; color: #6b7280; }
.breadcrumb-current { color: var(--primary-light); }
.article-hero-title {
  font-size: 32px; line-height: 1.4; font-weight: 800; letter-spacing: -0.02em;
  max-width: 780px; margin-top: 18px;
}
.article-hero-meta { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 24px; }
.article-hero-meta span { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: #d1d5db; }
.article-hero-meta i { color: var(--primary-light); font-size: 14px; }
.article-hero-line { width: 56px; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 2px; margin-top: 28px; }

/* ===== Article Body ===== */
.article-body-section { padding: 30px 0 80px; }
.article-card {
  background: #fff; border-radius: 20px; box-shadow: var(--shadow-lg);
  margin-top: -32px; position: relative; z-index: 10;
  padding: 48px 56px; border: 1px solid rgba(255,255,255,0.8);
}
.article-meta-bar {
  display: flex; flex-wrap: wrap; align-items: center; gap: 16px;
  padding-bottom: 24px; margin-bottom: 28px; border-bottom: 1px solid var(--border);
}
.article-meta-bar span { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-sub); }
.article-meta-bar i { color: var(--primary); }
.article-content-body { font-size: 16px; line-height: 1.9; color: #2d3136; word-wrap: break-word; }
.article-content-body h2, .article-content-body h3, .article-content-body h4 {
  color: var(--text-main); font-weight: 700; margin: 30px 0 14px; line-height: 1.4;
}
.article-content-body h2 { font-size: 24px; border-left: 4px solid var(--primary); padding-left: 14px; }
.article-content-body h3 { font-size: 20px; }
.article-content-body h4 { font-size: 17px; }
.article-content-body p { margin: 16px 0; }
.article-content-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content-body a:hover { color: var(--primary-dark); }
.article-content-body ul, .article-content-body ol { margin: 18px 0; padding-left: 24px; }
.article-content-body ul { list-style: disc; }
.article-content-body ol { list-style: decimal; }
.article-content-body li { margin: 8px 0; }
.article-content-body img { border-radius: 14px; margin: 24px 0; box-shadow: var(--shadow-md); }
.article-content-body blockquote {
  border-left: 4px solid var(--primary); background: #fff8f4;
  padding: 16px 24px; border-radius: 0 12px 12px 0; margin: 24px 0;
  color: var(--text-sub); font-style: normal;
}
.article-content-body table { width: 100%; border-collapse: collapse; margin: 24px 0; overflow-x: auto; display: block; }
.article-content-body table th, .article-content-body table td {
  border: 1px solid var(--border); padding: 10px 14px; text-align: left; font-size: 14px;
}
.article-content-body table th { background: #f9fafb; font-weight: 600; }

.article-tags {
  display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px;
  padding-top: 24px; border-top: 1px solid var(--border);
}
.article-tags .badge { background: #f3f4f6; color: var(--text-sub); }
.article-tags .badge:hover { background: #fff0e9; color: var(--primary); transition: var(--transition); }

.article-not-found {
  text-align: center; padding: 48px 20px;
}
.article-not-found i { font-size: 48px; color: #d1d5db; margin-bottom: 16px; display: block; }
.article-not-found h2 { font-size: 24px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
.article-not-found p { color: var(--text-muted); margin-bottom: 24px; }

/* ===== Related ===== */
.related-section { padding: 24px 0 72px; }
.section-sub { display: inline-flex; align-items: center; gap: 8px; color: var(--primary); font-size: 14px; font-weight: 700; }
.section-sub::before { content: ""; width: 22px; height: 3px; background: var(--primary); border-radius: 2px; }
.section-title { font-size: 30px; font-weight: 800; letter-spacing: -0.02em; color: var(--text-main); margin-top: 10px; }
.section-desc { color: var(--text-muted); margin-top: 8px; max-width: 560px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 40px; }
.related-card {
  background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid var(--border);
  transition: var(--transition); display: block;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.related-card:focus-visible { outline: 3px solid rgba(232,89,12,0.3); }
.related-cover { position: relative; aspect-ratio: 16/10; overflow: hidden; }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .related-cover img { transform: scale(1.05); }
.related-cover::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(15,17,21,0.35), transparent 60%);
}
.related-cover .badge { position: absolute; left: 14px; top: 14px; z-index: 2; box-shadow: var(--shadow-sm); }
.related-info { padding: 20px; }
.related-info h3 { font-size: 17px; font-weight: 700; line-height: 1.5; color: var(--text-main); margin-bottom: 8px; }
.related-info p {
  font-size: 14px; color: var(--text-muted); line-height: 1.6;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.related-date { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); margin-top: 14px; }
.related-date i { font-size: 12px; }

/* ===== CTA ===== */
.cta-section {
  padding: 72px 0; position: relative; overflow: hidden;
  background: linear-gradient(120deg, #0f1115 0%, #1a1f2e 60%, #221133 100%);
}
.cta-section::before {
  content: ""; position: absolute; top: -50%; right: -20%;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232,89,12,0.18), transparent 70%);
}
.cta-section::after {
  content: ""; position: absolute; bottom: -40%; left: -10%;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(250,82,82,0.12), transparent 70%);
}
.cta-content { position: relative; z-index: 2; text-align: center; max-width: 700px; margin: 0 auto; }
.cta-content .badge-dark { box-shadow: var(--shadow-sm); }
.cta-content h2 { font-size: 32px; font-weight: 800; color: #fff; margin-top: 16px; letter-spacing: -0.02em; }
.cta-content p { color: #9ca3af; margin-top: 14px; font-size: 16px; line-height: 1.7; }
.cta-buttons { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; margin-top: 32px; }
.cta-buttons .btn-outline { border-color: rgba(255,255,255,0.3); color: #e5e7eb; background: transparent; }
.cta-buttons .btn-outline:hover { border-color: var(--primary); color: var(--primary-light); background: rgba(255,255,255,0.06); }

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 40px; }
.faq-item {
  background: #fff; border: 1px solid var(--border); border-radius: 14px;
  padding: 28px; transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-md); border-color: transparent; }
.faq-item h3 {
  display: flex; align-items: flex-start; gap: 12px; font-size: 16px; font-weight: 700;
  color: var(--text-main); line-height: 1.5;
}
.faq-item h3 i { color: var(--primary); font-size: 14px; margin-top: 5px; }
.faq-item p { font-size: 14px; color: var(--text-sub); line-height: 1.75; margin-top: 12px; padding-left: 26px; }

/* ===== Footer ===== */
.site-footer { background: #0d1015; color: #9ca3af; padding: 72px 0 0; }
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px;
  padding-bottom: 48px; border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-brand p { font-size: 14px; line-height: 1.8; margin-top: 16px; max-width: 340px; }
.footer-links h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul a { font-size: 14px; color: #9ca3af; transition: var(--transition); }
.footer-links ul a:hover { color: var(--primary-light); }
.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding: 20px 0; font-size: 13px; color: #6b7280; flex-wrap: wrap; gap: 8px;
}
.footer-domain {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  background: rgba(255,255,255,0.06); padding: 4px 10px; border-radius: 6px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .search-box { min-width: 170px; }
  .related-grid { gap: 18px; }
}
@media (max-width: 768px) {
  .article-card { padding: 32px 24px; margin-top: -28px; }
  .article-hero { padding: 48px 0 64px; }
  .article-hero-title { font-size: 24px; }
  .related-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; gap: 14px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-content h2 { font-size: 24px; }
  .section-title { font-size: 24px; }
}
@media (max-width: 520px) {
  .article-card { padding: 24px 18px; }
  .article-meta-bar { gap: 10px; }
  .cta-buttons .btn { width: 100%; }
  .related-info h3 { font-size: 16px; }
}