/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --primary: #0a1a2f;
  --primary-light: #16304f;
  --primary-dark: #050e1a;
  --accent: #d4a853;
  --accent-hover: #c0944a;
  --accent-soft: rgba(212, 168, 83, 0.12);
  --bg: #f5f7fb;
  --bg-alt: #eef1f6;
  --bg-deep: #0a1a2f;
  --text: #1a2233;
  --text-weak: #5a6478;
  --text-invert: #ffffff;
  --border: #e3e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 4px 20px rgba(10, 26, 47, 0.06);
  --shadow-hover: 0 12px 36px rgba(10, 26, 47, 0.12);
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --container-w: 1200px;
  --header-h: 76px;
  --tabbar-h: 62px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button { border: none; background: none; font: inherit; cursor: pointer; }
input { font: inherit; }

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

/* ============ Header ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 26, 47, 0.92);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  height: var(--header-h);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent), #e8cfa0);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-dark);
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(212, 168, 83, 0.35);
  flex-shrink: 0;
}

.logo-text {
  color: var(--text-invert);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

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

.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
  margin-left: auto;
}

.nav-link {
  color: rgba(255,255,255,0.78);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  position: relative;
  letter-spacing: 0.3px;
  white-space: nowrap;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-link:hover {
  color: var(--text-invert);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link.active {
  color: var(--accent);
}

.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  padding: 10px 24px;
  background: var(--accent);
  color: var(--primary-dark);
  border-radius: 10px;
  font-weight: 700;
  font-size: 14px;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 168, 83, 0.35);
}

/* ============ 移动端底部 Tab ============ */
.bottom-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 26, 47, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-bottom: env(safe-area-inset-bottom);
}

.tabbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-around;
  height: var(--tabbar-h);
}

.tab-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  color: rgba(255,255,255,0.65);
  font-size: 11px;
  padding: 6px 14px;
  border-radius: 12px;
  transition: var(--transition);
}

.tab-item i {
  font-size: 19px;
}

.tab-item:hover,
.tab-item.active {
  color: var(--accent);
}

.tab-item.active {
  background: rgba(212, 168, 83, 0.12);
}

/* ============ Hero ============ */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  background-image: linear-gradient(135deg, rgba(5, 14, 26, 0.92), rgba(10, 26, 47, 0.78)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: var(--text-invert);
  overflow: hidden;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 100%;
  background: radial-gradient(ellipse at center, rgba(212, 168, 83, 0.08), transparent 70%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
  padding: 120px 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  border: 1px solid rgba(212, 168, 83, 0.3);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 50px;
  margin-bottom: 28px;
  letter-spacing: 0.5px;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-title {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.5px;
  margin-bottom: 20px;
}

.hero-title span {
  color: var(--accent);
}

.hero-desc {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,0.75);
  margin-bottom: 36px;
  max-width: 560px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 700;
  transition: var(--transition);
  letter-spacing: 0.3px;
}

.btn i {
  font-size: 15px;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
  box-shadow: 0 6px 24px rgba(212, 168, 83, 0.35);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(212, 168, 83, 0.45);
}

.btn-outline {
  border: 1.5px solid rgba(255,255,255,0.3);
  color: var(--text-invert);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
  background: var(--accent-soft);
}

.hero-meta {
  display: flex;
  gap: 28px;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.12);
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.6);
  font-size: 13px;
}

.meta-item i {
  color: var(--accent);
  font-size: 16px;
}

/* ============ 板块通用 ============ */
.section {
  padding: 96px 0;
}

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

.section-deep {
  background: var(--bg-deep);
  color: var(--text-invert);
}

.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: #b08838;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 20px;
  border-radius: 50px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.section-head.deeep .section-tag {
  color: var(--accent);
}

.section-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.5px;
  color: var(--text);
}

.section-title span {
  color: #b08838;
}

.section-deep .section-title {
  color: var(--text-invert);
}

.section-sub {
  color: var(--text-weak);
  font-size: 16px;
  margin-top: 14px;
  line-height: 1.7;
}

.section-deep .section-sub {
  color: rgba(255,255,255,0.65);
}

/* ============ 优势指标 ============ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

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

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

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

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

.feature-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: var(--accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: #b08838;
  margin-bottom: 20px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon {
  background: var(--accent);
  color: var(--primary-dark);
  transform: scale(1.05) rotate(-5deg);
}

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

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

/* ============ 分类入口 ============ */
.cat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.cat-card {
  background: var(--text-invert);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

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

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

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

.cat-card-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(10, 26, 47, 0.65));
}

.cat-card-body {
  padding: 28px 32px 32px;
}

.cat-card .cat-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: #b08838;
  background: var(--accent-soft);
  padding: 5px 14px;
  border-radius: 30px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.cat-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.cat-card p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 20px;
}

.cat-card-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--primary);
  font-size: 15px;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

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

.cat-card:hover .cat-card-btn {
  color: #b08838;
  border-bottom-color: var(--accent);
}

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

/* ============ 资讯列表 ============ */
.news-section {
  background: var(--bg-alt);
}

.news-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.news-feature {
  background: var(--text-invert);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: var(--transition);
}

.news-feature:hover {
  box-shadow: var(--shadow-hover);
}

.news-feature-img {
  position: relative;
  height: 260px;
  overflow: hidden;
}

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

.news-feature-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10, 26, 47, 0.4));
}

.news-feature-badge {
  position: absolute;
  bottom: 16px;
  left: 20px;
  z-index: 2;
  background: var(--accent);
  color: var(--primary-dark);
  padding: 4px 14px;
  border-radius: 30px;
  font-size: 12px;
  font-weight: 700;
}

.news-feature-body {
  padding: 28px 32px 32px;
}

.news-feature-body h3 {
  font-size: 21px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-feature-body p {
  color: var(--text-weak);
  font-size: 14px;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--text-weak);
  font-size: 13px;
}

.news-meta i {
  font-size: 13px;
  margin-right: 4px;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.news-list-item {
  background: var(--text-invert);
  border-radius: var(--radius);
  padding: 24px 28px;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.news-list-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-hover);
  border-color: transparent;
}

.news-list-num {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: #b08838;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
}

.news-list-body {
  flex: 1;
  min-width: 0;
}

.news-list-body h4 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 6px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: var(--transition);
}

.news-list-item:hover .news-list-body h4 {
  color: #b08838;
}

.news-list-meta {
  display: flex;
  gap: 16px;
  color: var(--text-weak);
  font-size: 12px;
}

.news-empty {
  background: var(--text-invert);
  border-radius: var(--radius);
  padding: 48px;
  text-align: center;
  color: var(--text-weak);
  border: 1px dashed var(--border);
}

/* ============ 流程 ============ */
.steps-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.steps-grid::before {
  content: '';
  position: absolute;
  top: 38px;
  left: 12%;
  right: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent), transparent);
  opacity: 0.2;
  z-index: 0;
}

.step-item {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 0 10px;
}

.step-number {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  margin: 0 auto 20px;
  background: var(--text-invert);
  border: 3px solid var(--accent);
  box-shadow: 0 8px 24px rgba(212, 168, 83, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  transition: var(--transition);
}

.step-item:hover .step-number {
  background: var(--accent);
  color: var(--primary-dark);
  transform: scale(1.08);
  box-shadow: 0 12px 32px rgba(212, 168, 83, 0.4);
}

.step-item h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.step-item p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.6;
  max-width: 220px;
  margin: 0 auto;
}

/* ============ 数据统计 ============ */
.stats-section {
  background-image: linear-gradient(135deg, rgba(5, 14, 26, 0.92), rgba(10, 26, 47, 0.85)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  padding: 80px 0;
  color: var(--text-invert);
}

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

.stat-item {
  text-align: center;
  padding: 20px;
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius);
  background: rgba(255,255,255,0.03);
  transition: var(--transition);
}

.stat-item:hover {
  background: rgba(255,255,255,0.06);
  transform: translateY(-4px);
  border-color: rgba(212, 168, 83, 0.3);
}

.stat-number {
  font-size: 44px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
}

/* ============ 图文叙事 ============ */
.story-section {
  padding: 96px 0;
}

.story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

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

.story-media img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.story-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(10, 26, 47, 0.3));
}

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

.story-content .subtitle {
  display: inline-block;
  background: var(--accent-soft);
  color: #b08838;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 18px;
  border-radius: 50px;
  margin-bottom: 18px;
}

.story-content h2 {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text);
}

.story-content > p {
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 28px;
}

.story-points {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.story-point {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  background: var(--text-invert);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.story-point:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}

.story-point i {
  font-size: 22px;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.story-point h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 4px;
}

.story-point p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.6;
}

/* ============ FAQ ============ */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--text-invert);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-item[open] {
  box-shadow: var(--shadow);
}

.faq-summary {
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  color: var(--text);
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  transition: var(--transition);
  background: transparent;
}

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

.faq-summary::after {
  content: '\f107';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: 16px;
  color: var(--accent);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

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

.faq-summary:hover {
  color: #b08838;
}

.faq-body {
  padding: 0 28px 24px;
  color: var(--text-weak);
  font-size: 14.5px;
  line-height: 1.8;
}

/* ============ CTA ============ */
.cta-section {
  position: relative;
  background-image: linear-gradient(135deg, rgba(5, 14, 26, 0.9), rgba(10, 26, 47, 0.85)), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  padding: 90px 0;
  color: var(--text-invert);
  text-align: center;
}

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

.cta-badge {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  border: 1px solid rgba(212, 168, 83, 0.3);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 20px;
  border-radius: 50px;
  margin-bottom: 22px;
}

.cta-content h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.cta-content p {
  color: rgba(255,255,255,0.7);
  font-size: 16px;
  margin-bottom: 34px;
}

.cta-btns {
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-note {
  margin-top: 22px;
  font-size: 13px;
  color: rgba(255,255,255,0.5);
}

.cta-note i {
  color: var(--accent);
  margin-right: 4px;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.6);
  padding: 60px 0 100px;
  font-size: 14px;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.footer-brand {
  max-width: 360px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
}

.footer-logo .logo-text {
  font-size: 20px;
}

.footer-brand p {
  line-height: 1.8;
  font-size: 14px;
}

.footer-brand .social-links {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}

.social-link {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  font-size: 15px;
  transition: var(--transition);
}

.social-link:hover {
  background: var(--accent);
  color: var(--primary-dark);
  transform: translateY(-3px);
}

.footer-col h4 {
  color: var(--text-invert);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
}

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

.footer-col a {
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

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

.footer-bottom {
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

.footer-bottom a {
  color: rgba(255,255,255,0.4);
}

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

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

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

  .steps-grid::before {
    display: none;
  }

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

  .hero-title {
    font-size: 44px;
  }
}

@media (max-width: 768px) {
  .main-nav {
    display: none;
  }

  .bottom-tabbar {
    display: block;
  }

  .site-footer {
    padding-bottom: 84px;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    padding: 90px 0;
  }

  .hero-title {
    font-size: 34px;
  }

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

  .section {
    padding: 64px 0;
  }

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

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

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

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

  .story-media img {
    height: 260px;
  }

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

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

  .header-inner {
    padding: 0 4px;
  }

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

  .logo-mark {
    width: 38px;
    height: 38px;
    font-size: 17px;
  }

  .hero-content {
    padding: 70px 0;
  }

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

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

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

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .stat-number {
    font-size: 32px;
  }

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

  .news-list-item {
    padding: 18px;
  }

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

  .tab-item {
    padding: 6px 10px;
    font-size: 10px;
  }

  .tab-item i {
    font-size: 17px;
  }
}

/* ============ 焦点状态 ============ */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(212, 168, 83, 0.5);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ============ 平滑滚动与动画 ============ */
@media (prefers-reduced-motion: prefer) {
  html {
    scroll-behavior: auto;
  }
  * {
    transition: none !important;
  }
}

/* roulang page: category1 */
:root {
            --primary: #123a63;
            --primary-light: #1a4d8f;
            --primary-dark: #0c2b4a;
            --accent: #d4a24e;
            --accent-light: #e5b96a;
            --bg: #f4f6fa;
            --card-bg: #ffffff;
            --text: #1e2a38;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --shadow-sm: 0 2px 10px rgba(15, 42, 74, 0.06);
            --shadow: 0 10px 30px rgba(15, 42, 74, 0.08);
            --shadow-lg: 0 20px 45px rgba(15, 42, 74, 0.12);
            --radius-sm: 10px;
            --radius: 16px;
            --radius-lg: 24px;
            --transition: all .3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.65;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-bottom: 0;
        }

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ===== Header ===== */
        .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: var(--shadow-sm);
        }

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

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-radius: 12px;
            font-size: 18px;
            box-shadow: 0 6px 16px rgba(18, 58, 99, 0.25);
        }

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

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

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            border-radius: 999px;
            line-height: 1.4;
            white-space: nowrap;
        }

        .nav-link:hover {
            background: rgba(18, 58, 99, 0.06);
            color: var(--primary);
        }

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(18, 58, 99, 0.22);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-left: 8px;
            padding: 11px 22px;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: #1e2a38;
            font-weight: 700;
            border-radius: 999px;
            white-space: nowrap;
            box-shadow: 0 8px 20px rgba(212, 162, 78, 0.35);
            transition: var(--transition);
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 26px rgba(212, 162, 78, 0.42);
            color: #1e2a38;
        }

        /* ===== Page Banner ===== */
        .page-banner {
            position: relative;
            padding: 120px 0 100px;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            color: #fff;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(12, 43, 74, 0.92), rgba(26, 77, 143, 0.78));
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
            max-width: 860px;
            text-align: center;
        }

        .banner-tag {
            display: inline-block;
            padding: 8px 18px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.35);
            border-radius: 999px;
            font-size: 14px;
            letter-spacing: 1px;
            margin-bottom: 22px;
            backdrop-filter: blur(6px);
        }

        .page-banner h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .banner-desc {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 34px;
            line-height: 1.7;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 999px;
            font-size: 16px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 10px 25px rgba(18, 58, 99, 0.28);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 32px rgba(18, 58, 99, 0.36);
            color: #fff;
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.10);
        }

        .btn-light:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.16);
            color: var(--primary);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.8);
        }

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

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

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

        .section-white {
            background: #fff;
        }

        .section-head {
            max-width: 720px;
            margin: 0 auto 52px;
            text-align: center;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(18, 58, 99, 0.08);
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            border-radius: 999px;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text);
            line-height: 1.3;
            margin-bottom: 14px;
        }

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

        /* ===== Feature Cards ===== */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
        }

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

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(18, 58, 99, 0.16);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 16px;
            margin-bottom: 20px;
            box-shadow: 0 8px 18px rgba(18, 58, 99, 0.22);
        }

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

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

        /* ===== Steps ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 22px;
            position: relative;
        }

        .step {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: var(--transition);
        }

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

        .step-num {
            width: 52px;
            height: 52px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark);
            font-size: 20px;
            font-weight: 800;
            border-radius: 50%;
            box-shadow: 0 8px 18px rgba(212, 162, 78, 0.3);
        }

        .step h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .step p {
            font-size: 13px;
            line-height: 1.65;
            color: var(--text-weak);
        }

        /* ===== Split Guide ===== */
        .split-wrap {
            display: grid;
            grid-template-columns: 0.92fr 1.08fr;
            gap: 44px;
            align-items: center;
        }

        .split-media {
            position: relative;
        }

        .split-media img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            width: 100%;
        }

        .media-card {
            position: relative;
            z-index: 2;
            margin-top: -48px;
            margin-left: 24px;
            margin-right: 24px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
        }

        .media-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

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

        .split-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .guide-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 20px 22px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .guide-item:hover {
            transform: translateX(5px);
            box-shadow: var(--shadow);
            border-color: rgba(18, 58, 99, 0.2);
        }

        .guide-icon {
            width: 46px;
            height: 46px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(18, 58, 99, 0.08);
            color: var(--primary);
            font-size: 18px;
            border-radius: 14px;
        }

        .guide-info {
            flex: 1;
            min-width: 0;
        }

        .guide-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            color: var(--accent);
            background: rgba(212, 162, 78, 0.12);
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 6px;
        }

        .guide-title {
            display: block;
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }

        .guide-desc {
            display: block;
            font-size: 13px;
            color: var(--text-weak);
            line-height: 1.6;
        }

        .guide-date {
            flex-shrink: 0;
            font-size: 13px;
            color: var(--text-weak);
            white-space: nowrap;
        }

        .guide-arrow {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(18, 58, 99, 0.06);
            color: var(--primary);
            border-radius: 50%;
        }

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

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

        .faq-item:hover {
            border-color: rgba(18, 58, 99, 0.18);
            box-shadow: var(--shadow);
        }

        .faq-item[open] {
            border-color: rgba(18, 58, 99, 0.25);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            list-style: none;
        }

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

        .faq-question::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            transition: transform .3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            padding: 0 24px 22px;
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-weak);
            border-top: 1px solid var(--border);
            margin-top: 0;
            padding-top: 16px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            color: #fff;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(12, 43, 74, 0.94), rgba(26, 77, 143, 0.84));
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

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

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 32px;
        }

        .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0d1f33;
            color: rgba(255, 255, 255, 0.8);
            padding: 64px 0 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr;
            gap: 44px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .footer-logo .logo-mark {
            background: linear-gradient(135deg, var(--accent), var(--accent-light));
            color: var(--primary-dark);
        }

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

        .footer-logo .logo-text span {
            color: var(--accent-light);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.68);
            margin-bottom: 20px;
            max-width: 320px;
        }

        .social-links {
            display: flex;
            gap: 10px;
        }

        .social-link {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 16px;
            transition: var(--transition);
        }

        .social-link:hover {
            background: var(--accent);
            color: var(--primary-dark);
            transform: translateY(-3px);
        }

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

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

        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }

        .footer-col ul li a:hover {
            color: var(--accent-light);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            padding: 22px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

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

        /* ===== Mobile Tabbar ===== */
        .mobile-tabbar {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-top: 1px solid var(--border);
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.06);
            padding: 6px 10px calc(6px + env(safe-area-inset-bottom));
        }

        .tab-link {
            flex: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 3px;
            padding: 6px 4px;
            font-size: 11px;
            color: var(--text-weak);
            border-radius: 12px;
            transition: var(--transition);
        }

        .tab-link i {
            font-size: 18px;
        }

        .tab-link.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(18, 58, 99, 0.06);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

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

            .split-media {
                max-width: 560px;
            }

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

        @media (max-width: 768px) {
            body {
                padding-bottom: 68px;
            }

            .main-nav {
                display: none;
            }

            .mobile-tabbar {
                display: flex;
            }

            .site-header {
                border-bottom: none;
            }

            .header-inner {
                justify-content: center;
            }

            .page-banner {
                padding: 90px 0 80px;
            }

            .page-banner h1 {
                font-size: 36px;
            }

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

            .section {
                padding: 66px 0;
            }

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

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

            .steps {
                grid-template-columns: 1fr;
                max-width: 420px;
                margin: 0 auto;
            }

            .guide-item {
                padding: 16px;
                gap: 12px;
                flex-wrap: wrap;
            }

            .guide-date {
                display: none;
            }

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

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

            .cta-section {
                padding: 76px 0;
            }

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

            .media-card {
                margin-left: 14px;
                margin-right: 14px;
            }
        }

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

            .header-inner {
                height: 64px;
            }

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

            .logo-mark {
                width: 36px;
                height: 36px;
                font-size: 16px;
                border-radius: 10px;
            }

            .page-banner {
                padding: 72px 0 64px;
            }

            .page-banner h1 {
                font-size: 30px;
            }

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

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

            .btn {
                width: 100%;
            }

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

            .feature-card {
                padding: 24px 20px;
            }

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

            .guide-item {
                flex-direction: column;
                align-items: flex-start;
            }

            .guide-arrow {
                position: absolute;
                right: 16px;
                top: 50%;
                transform: translateY(-50%);
            }

            .split-list {
                position: relative;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer {
                padding: 0 18px 18px;
                font-size: 13px;
            }

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

/* roulang page: article */
:root {
    --primary: #0f2f57;
    --primary-light: #1b4b84;
    --accent: #e8a33d;
    --accent-hover: #d4922b;
    --bg: #f6f8fb;
    --surface: #ffffff;
    --text: #1e293b;
    --text-light: #5b6b7b;
    --border: #e4e9f0;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 10px 30px rgba(15, 47, 87, 0.08);
    --shadow-hover: 0 18px 40px rgba(15, 47, 87, 0.14);
    --transition: 0.3s ease;
    --container: 1200px;
    --header-h: 76px;
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: color 0.3s ease, background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }

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

/* ===== Header ===== */
.site-header {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); }
.site-logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--primary); }
.logo-mark {
    width: 42px; height: 42px;
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
    color: #fff;
    display: flex; align-items: center; justify-content: center;
    border-radius: 12px; font-size: 18px;
    box-shadow: 0 6px 16px rgba(15, 47, 87, 0.18);
}
.logo-text span { color: var(--accent); }
.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link { padding: 8px 18px; border-radius: 8px; font-weight: 600; font-size: 15px; color: var(--text-light); }
.nav-link:hover { color: var(--primary); background: #f0f4fa; }
.nav-link.active { background: var(--primary); color: #fff; }
.nav-cta {
    padding: 10px 22px;
    background: var(--accent);
    color: #fff;
    border-radius: 10px;
    font-weight: 700;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: 8px;
    box-shadow: 0 6px 16px rgba(232, 163, 61, 0.3);
}
.nav-cta:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 10px 22px rgba(232, 163, 61, 0.36); }
.nav-cta:focus-visible, .nav-link:focus-visible, .site-logo:focus-visible { outline: 3px solid rgba(232, 163, 61, 0.6); outline-offset: 2px; }

/* ===== Mobile Tabbar ===== */
.mobile-tabbar {
    display: none;
    position: fixed;
    bottom: 0; left: 0; right: 0;
    background: #fff;
    border-top: 1px solid var(--border);
    z-index: 200;
    padding: 8px 10px calc(8px + env(safe-area-inset-bottom));
    box-shadow: 0 -6px 24px rgba(15, 47, 87, 0.08);
}
.tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-light);
    padding: 4px 8px;
    border-radius: 10px;
    flex: 1;
    transition: color 0.3s;
}
.tab-item i { font-size: 19px; }
.tab-item.active { color: var(--primary); }
.tab-item:active { transform: scale(0.96); }

/* ===== Article Hero ===== */
.article-hero {
    background-size: cover;
    background-position: center;
    padding: 96px 0 72px;
    position: relative;
    color: #fff;
}
.article-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(15, 47, 87, 0.92) 30%, rgba(15, 47, 87, 0.55) 100%);
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255, 255, 255, 0.85); margin-bottom: 22px; flex-wrap: wrap; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 10px; opacity: 0.7; }
.article-hero h1 { font-size: 38px; font-weight: 800; line-height: 1.4; max-width: 820px; letter-spacing: -0.02em; }
.article-meta { display: flex; gap: 22px; flex-wrap: wrap; margin-top: 22px; font-size: 14px; color: rgba(255, 255, 255, 0.92); }
.article-meta span { display: inline-flex; align-items: center; gap: 7px; background: rgba(255, 255, 255, 0.12); padding: 6px 14px; border-radius: 30px; backdrop-filter: blur(6px); }
.article-meta i { color: var(--accent); }

/* ===== Article Main ===== */
.article-main { padding: 60px 0 80px; }
.article-grid { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: start; }
.article-content {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 44px;
    border: 1px solid rgba(228, 233, 240, 0.6);
}
.article-body { font-size: 16.5px; line-height: 1.9; color: #334155; }
.article-body h2 { font-size: 24px; margin: 30px 0 14px; color: var(--primary); font-weight: 800; position: relative; padding-left: 16px; }
.article-body h2::before { content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px; background: var(--accent); border-radius: 4px; }
.article-body h3 { font-size: 19px; margin: 24px 0 12px; color: var(--primary); font-weight: 700; }
.article-body p { margin-bottom: 18px; }
.article-body ul, .article-body ol { margin-bottom: 18px; padding-left: 24px; list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body img { border-radius: 12px; margin: 20px 0; box-shadow: var(--shadow); }
.article-body blockquote { border-left: 4px solid var(--accent); padding: 14px 22px; background: #fff8ed; border-radius: 0 12px 12px 0; margin: 20px 0; font-style: italic; color: #7a5a2e; }
.article-body a { color: var(--primary-light); border-bottom: 1px solid rgba(27, 75, 132, 0.4); }
.article-body a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.article-body table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15px; }
.article-body table th { background: var(--primary); color: #fff; padding: 12px 16px; text-align: left; }
.article-body table td { padding: 12px 16px; border-bottom: 1px solid var(--border); }

.article-tags { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 34px; padding-top: 24px; border-top: 1px solid var(--border); }
.tag-item { display: inline-flex; align-items: center; gap: 6px; background: var(--bg); border: 1px solid var(--border); padding: 6px 14px; border-radius: 30px; font-size: 13px; font-weight: 600; color: var(--text-light); }
.tag-item i { color: var(--accent); }

.not-found-box { text-align: center; padding: 60px 20px; }
.not-found-box i { font-size: 56px; color: var(--accent); margin-bottom: 18px; display: inline-block; }
.not-found-box h2 { font-size: 26px; color: var(--primary); margin-bottom: 12px; }
.not-found-box p { color: var(--text-light); margin-bottom: 24px; font-size: 16px; }

/* ===== Sidebar Widget ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; position: sticky; top: calc(var(--header-h) + 20px); }
.widget {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 26px;
    border: 1px solid rgba(228, 233, 240, 0.6);
}
.widget h3 {
    font-size: 17px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 16px;
    padding-bottom: 13px;
    border-bottom: 2px solid var(--bg);
    display: flex;
    align-items: center;
    gap: 8px;
}
.widget h3 i { color: var(--accent); }
.news-list li { padding: 11px 0; border-bottom: 1px dashed var(--border); }
.news-list li:last-child { border-bottom: none; }
.news-list a { font-size: 14px; color: var(--text-light); display: block; line-height: 1.5; transition: all 0.3s; }
.news-list a:hover { color: var(--accent); padding-left: 6px; }
.empty-tip { font-size: 14px; color: var(--text-light); text-align: center; padding: 16px 0; }

.category-cards { display: grid; gap: 12px; }
.category-link {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg);
    border-radius: 12px;
    padding: 12px;
    border: 1px solid var(--border);
    transition: all 0.3s;
}
.category-link:hover { background: #edf2fa; border-color: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 18px rgba(15, 47, 87, 0.09); }
.category-thumb { width: 66px; height: 50px; object-fit: cover; border-radius: 8px; flex-shrink: 0; }
.category-text { flex: 1; min-width: 0; }
.category-text h4 { font-size: 15px; font-weight: 700; color: var(--primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.category-text p { font-size: 12px; color: var(--text-light); margin-top: 3px; }
.category-arrow { color: var(--text-light); font-size: 12px; flex-shrink: 0; }
.category-link:hover .category-arrow { color: var(--accent); transform: translateX(3px); }

.about-widget p { font-size: 14px; color: var(--text-light); margin-bottom: 18px; }
.widget-highlight { background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: #fff; }
.widget-highlight h3 { color: #fff; border-bottom-color: rgba(255, 255, 255, 0.2); }
.widget-highlight h3 i { color: var(--accent); }
.widget-highlight p { font-size: 14px; opacity: 0.88; margin-top: 10px; }
.widget-highlight .btn { margin-top: 18px; }

/* ===== Buttons ===== */
.btn { display: inline-flex; align-items: center; gap: 9px; padding: 13px 28px; border-radius: 10px; font-weight: 700; font-size: 15px; transition: all 0.3s ease; border: none; cursor: pointer; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(15, 47, 87, 0.22); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(15, 47, 87, 0.15); }
.btn-light { background: #fff; color: var(--primary); }
.btn-light:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0, 0, 0, 0.18); }
.btn-full { width: 100%; justify-content: center; }
.btn-sm { padding: 9px 18px; font-size: 14px; }

/* ===== FAQ Section ===== */
.faq-section { padding: 80px 0; background: #fff; border-top: 1px solid var(--border); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 44px; }
.section-tag { display: inline-block; background: rgba(232, 163, 61, 0.14); color: #b47a1d; font-size: 13px; font-weight: 700; padding: 5px 16px; border-radius: 30px; margin-bottom: 12px; letter-spacing: 0.05em; }
.section-head h2 { font-size: 32px; font-weight: 800; color: var(--primary); line-height: 1.4; margin-bottom: 12px; }
.section-head p { font-size: 15px; color: var(--text-light); }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.faq-item { background: var(--bg); border: 1px solid var(--border); border-radius: 14px; padding: 24px; transition: all 0.3s; }
.faq-item:hover { border-color: var(--primary-light); box-shadow: var(--shadow); transform: translateY(-2px); background: var(--surface); }
.faq-item h3 { font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 8px; display: flex; gap: 8px; align-items: flex-start; }
.faq-item h3::before { content: "Q"; flex-shrink: 0; width: 24px; height: 24px; background: var(--accent); color: #fff; font-size: 12px; font-weight: 800; border-radius: 7px; display: inline-flex; align-items: center; justify-content: center; margin-top: 3px; }
.faq-item p { font-size: 14px; color: var(--text-light); padding-left: 32px; }

/* ===== CTA Section ===== */
.cta-section { padding: 96px 0; position: relative; background-size: cover; background-position: center; color: #fff; text-align: center; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15, 47, 87, 0.94), rgba(27, 75, 132, 0.82)); }
.cta-inner { position: relative; max-width: 680px; margin: 0 auto; padding: 0 20px; }
.cta-inner h2 { font-size: 34px; font-weight: 800; margin-bottom: 14px; line-height: 1.4; }
.cta-inner p { font-size: 16px; margin-bottom: 34px; opacity: 0.9; }
.cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-ghost { background: rgba(255, 255, 255, 0.14); border: 1px solid rgba(255, 255, 255, 0.55); color: #fff; backdrop-filter: blur(6px); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.22); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2); }

/* ===== Footer ===== */
.site-footer { background: #0b2239; color: #d0d9e5; padding: 80px 0 0; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 50px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-logo { display: flex; align-items: center; gap: 10px; }
.footer-logo .logo-mark { background: rgba(255, 255, 255, 0.14); box-shadow: none; }
.footer-logo .logo-text { color: #fff; font-size: 20px; font-weight: 800; }
.footer-logo .logo-text span { color: var(--accent); }
.footer-brand p { font-size: 14px; margin: 18px 0; color: rgba(255, 255, 255, 0.62); line-height: 1.8; }
.social-links { display: flex; gap: 12px; }
.social-link { width: 42px; height: 42px; border-radius: 10px; background: rgba(255, 255, 255, 0.1); display: flex; align-items: center; justify-content: center; color: #fff; transition: all 0.3s; }
.social-link:hover { background: var(--accent); transform: translateY(-4px); box-shadow: 0 8px 20px rgba(232, 163, 61, 0.3); }
.footer-col h4 { font-size: 16px; color: #fff; margin-bottom: 22px; position: relative; padding-bottom: 12px; }
.footer-col h4::after { content: ""; position: absolute; left: 0; bottom: 0; width: 28px; height: 3px; background: var(--accent); border-radius: 3px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { color: rgba(255, 255, 255, 0.62); font-size: 14px; transition: all 0.3s; }
.footer-col ul a:hover { color: var(--accent); padding-left: 5px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding: 26px 0; font-size: 14px; color: rgba(255, 255, 255, 0.45); gap: 10px; flex-wrap: wrap; }
.footer-bottom a { color: rgba(255, 255, 255, 0.65); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .article-grid { grid-template-columns: 1fr; }
    .article-sidebar { position: static; display: grid; grid-template-columns: 1fr 1fr; }
    .article-hero h1 { font-size: 32px; }
    .cta-inner h2 { font-size: 30px; }
}

@media (max-width: 768px) {
    .site-header { position: relative; }
    .main-nav { display: none; }
    .mobile-tabbar { display: flex; }
    body { padding-bottom: 64px; }
    .article-main { padding: 36px 0 60px; }
    .article-content { padding: 28px 24px; }
    .article-hero { padding: 64px 0 52px; }
    .article-hero h1 { font-size: 27px; }
    .article-meta { gap: 10px; }
    .article-meta span { padding: 5px 11px; font-size: 13px; }
    .faq-grid { grid-template-columns: 1fr; }
    .faq-section { padding: 60px 0; }
    .section-head h2 { font-size: 26px; }
    .cta-section { padding: 70px 0; }
    .cta-inner h2 { font-size: 26px; }
    .footer-top { grid-template-columns: 1fr; gap: 36px; }
    .footer-bottom { flex-direction: column; justify-content: center; text-align: center; }
}

@media (max-width: 520px) {
    .container { padding: 0 16px; }
    .header-inner { height: 64px; }
    .site-logo { font-size: 17px; }
    .logo-mark { width: 36px; height: 36px; font-size: 15px; border-radius: 10px; }
    .article-sidebar { grid-template-columns: 1fr; }
    .article-hero h1 { font-size: 24px; }
    .article-body { font-size: 15.5px; }
    .article-body h2 { font-size: 21px; }
    .cta-actions { flex-direction: column; align-items: stretch; }
    .cta-actions .btn { justify-content: center; }
}

/* roulang page: category2 */
:root{
  --primary:#0e2a47;
  --primary-rgb:14,42,71;
  --primary-dark:#0a1f35;
  --accent:#d4a853;
  --accent-rgb:212,168,83;
  --accent-hover:#c0943e;
  --bg:#f5f7fa;
  --card:#ffffff;
  --text:#1a2433;
  --muted:#60708a;
  --border:#e4e9f0;
  --heading:#12233a;
  --radius-lg:20px;
  --radius-md:14px;
  --radius-sm:10px;
  --shadow-sm:0 4px 14px rgba(var(--primary-rgb),.06);
  --shadow:0 10px 32px rgba(var(--primary-rgb),.08);
  --shadow-lg:0 24px 56px rgba(var(--primary-rgb),.14);
  --transition:all .3s cubic-bezier(.25,.8,.25,1);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .25s}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(var(--accent-rgb),.55);outline-offset:2px;border-radius:6px}
::selection{background:rgba(var(--accent-rgb),.3)}
.container{width:min(var(--container),92%);margin:0 auto}

/* ========== 按钮 ========== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55rem;
  padding:.85rem 1.9rem;border-radius:999px;font-weight:600;font-size:.98rem;
  line-height:1;transition:var(--transition);border:2px solid transparent;cursor:pointer;
}
.btn-accent{background:var(--accent);color:#0b1f33;box-shadow:0 8px 20px rgba(var(--accent-rgb),.35)}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 12px 28px rgba(var(--accent-rgb),.42)}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.65);color:#fff}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-dark{background:var(--primary);color:#fff;box-shadow:0 8px 22px rgba(var(--primary-rgb),.2)}
.btn-dark:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 30px rgba(var(--primary-rgb),.32)}

/* ========== 顶部导航 ========== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(228,233,240,.8);
  box-shadow:0 4px 24px rgba(var(--primary-rgb),.04);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:76px;gap:1.5rem}
.site-logo{display:flex;align-items:center;gap:.65rem;font-size:1.32rem;font-weight:800;color:var(--heading);letter-spacing:.01em;flex-shrink:0}
.logo-mark{
  width:42px;height:42px;border-radius:14px;
  background:linear-gradient(135deg,var(--primary),#1d4d7a);
  display:grid;place-items:center;color:#fff;font-size:1.1rem;
  box-shadow:0 6px 18px rgba(var(--primary-rgb),.28);
}
.logo-text span{color:var(--accent);font-weight:700}
.main-nav{display:flex;align-items:center;gap:2rem}
.nav-link{
  font-size:.98rem;font-weight:600;color:var(--muted);
  padding:.45rem .2rem;position:relative;letter-spacing:.02em;
}
.nav-link::after{content:"";position:absolute;left:0;bottom:-4px;width:0;height:2px;border-radius:4px;background:var(--accent);transition:var(--transition)}
.nav-link:hover{color:var(--heading)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--primary)}
.nav-link.active::after{width:100%;background:var(--accent)}
.nav-cta{
  display:inline-flex;align-items:center;gap:.5rem;
  background:var(--primary);color:#fff;padding:.68rem 1.5rem;
  border-radius:999px;font-weight:600;font-size:.92rem;
  transition:var(--transition);box-shadow:0 8px 22px rgba(var(--primary-rgb),.24);
  white-space:nowrap;
}
.nav-cta:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 12px 30px rgba(var(--primary-rgb),.32)}

/* ========== 移动端底部 Tab ========== */
.mobile-tabbar{
  position:fixed;bottom:0;left:0;right:0;z-index:120;
  background:rgba(255,255,255,.97);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-top:1px solid var(--border);
  display:none;justify-content:space-around;align-items:center;
  padding:.45rem .2rem calc(.45rem + env(safe-area-inset-bottom));
  box-shadow:0 -6px 24px rgba(var(--primary-rgb),.06);
}
.tab-item{
  display:flex;flex-direction:column;align-items:center;gap:.18rem;
  font-size:.72rem;color:var(--muted);padding:.28rem 1rem;border-radius:12px;
  transition:var(--transition);
}
.tab-item i{font-size:1.18rem}
.tab-item.active{color:var(--primary);font-weight:600}
.tab-item:hover{background:rgba(var(--primary-rgb),.06);color:var(--primary)}

/* ========== 页面 Banner ========== */
.page-banner{
  position:relative;padding:6rem 0 4.6rem;
  background-size:cover;background-position:center;color:#fff;text-align:center;
  isolation:isolate;
}
.page-banner::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(180deg,rgba(11,31,51,.88),rgba(11,31,51,.74));
}
.banner-inner{max-width:860px;margin:0 auto;padding:0 1rem}
.breadcrumb{
  display:inline-flex;align-items:center;gap:.4rem;font-size:.88rem;
  color:rgba(255,255,255,.8);background:rgba(255,255,255,.1);
  padding:.35rem 1rem;border-radius:999px;margin-bottom:1.5rem;
  backdrop-filter:blur(4px);
}
.breadcrumb a:hover{color:var(--accent)}
.breadcrumb i{font-size:.72rem;color:rgba(255,255,255,.55)}
.page-banner h1{
  font-size:2.8rem;font-weight:800;letter-spacing:.02em;line-height:1.25;
  margin-bottom:1rem;text-shadow:0 4px 20px rgba(0,0,0,.3);
}
.page-banner p{
  font-size:1.14rem;color:rgba(255,255,255,.9);max-width:700px;
  margin:0 auto 1.8rem;line-height:1.85;
}
.banner-badges{display:flex;flex-wrap:wrap;justify-content:center;gap:.7rem;margin-top:1rem}
.badge{
  display:inline-flex;align-items:center;gap:.4rem;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);
  padding:.4rem 1rem;border-radius:999px;font-size:.86rem;
  backdrop-filter:blur(6px);
}
.badge i{color:var(--accent)}

/* ========== 板块通用 ========== */
.section{position:relative;padding:5.5rem 0}
.section-head{margin-bottom:3rem}
.section-head.center{text-align:center}
.section-head.center .section-desc{margin-left:auto;margin-right:auto}
.section-tag{
  display:inline-flex;align-items:center;gap:.5rem;
  font-size:.85rem;font-weight:700;letter-spacing:.08em;color:var(--accent);
  background:rgba(var(--accent-rgb),.12);padding:.4rem 1.1rem;
  border-radius:999px;margin-bottom:1rem;text-transform:uppercase;
}
.section-title{font-size:2.1rem;font-weight:800;color:var(--heading);line-height:1.3;margin-bottom:.8rem}
.section-desc{font-size:1.05rem;color:var(--muted);max-width:680px;line-height:1.8}

/* ========== 核心要点卡片 ========== */
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.feature-card{
  background:var(--card);border:1px solid transparent;border-radius:var(--radius-lg);
  padding:2rem 1.7rem;box-shadow:var(--shadow);transition:var(--transition);
  position:relative;overflow:hidden;
}
.feature-card::before{
  content:"";position:absolute;top:0;left:0;width:100%;height:4px;
  background:linear-gradient(90deg,var(--accent),var(--accent-hover));
  opacity:0;transition:var(--transition);
}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:rgba(var(--accent-rgb),.25)}
.feature-card:hover::before{opacity:1}
.feature-icon{
  width:54px;height:54px;border-radius:16px;
  background:linear-gradient(135deg,rgba(var(--primary-rgb),.08),rgba(var(--primary-rgb),.03));
  display:grid;place-items:center;font-size:1.4rem;color:var(--primary);margin-bottom:1.3rem;
}
.feature-card:nth-child(2) .feature-icon{color:var(--accent)}
.feature-card:nth-child(3) .feature-icon{color:#2b7a6e}
.feature-card:nth-child(4) .feature-icon{color:#b4552d}
.feature-card h3{font-size:1.14rem;font-weight:700;color:var(--heading);margin-bottom:.6rem}
.feature-card p{font-size:.93rem;color:var(--muted);line-height:1.75}

/* ========== 步骤流程 ========== */
.steps-section{
  background:var(--primary);color:#fff;position:relative;overflow:hidden;
}
.steps-section::before{
  content:"";position:absolute;width:360px;height:360px;border-radius:50%;
  background:rgba(var(--accent-rgb),.1);top:-140px;right:-100px;filter:blur(50px);
}
.steps-section::after{
  content:"";position:absolute;width:280px;height:280px;border-radius:50%;
  background:rgba(255,255,255,.03);bottom:-120px;left:-80px;filter:blur(40px);
}
.steps-section .section-title{color:#fff}
.steps-section .section-desc{color:rgba(255,255,255,.72)}
.steps-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:1.5rem;margin-top:3rem;position:relative;z-index:2}
.step-item{
  position:relative;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);
  padding:2rem 1.4rem 1.8rem;backdrop-filter:blur(4px);transition:var(--transition);
}
.step-item:hover{background:rgba(255,255,255,.1);transform:translateY(-4px)}
.step-num{font-size:2.6rem;font-weight:800;color:rgba(255,255,255,.14);line-height:1;margin-bottom:.6rem;display:block}
.step-item i{
  display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;
  border-radius:12px;background:var(--accent);color:#0b1f33;font-size:1.1rem;
  margin-bottom:1rem;box-shadow:0 6px 18px rgba(var(--accent-rgb),.3);
}
.step-item h4{font-size:1.05rem;font-weight:700;margin-bottom:.5rem;color:#fff}
.step-item p{font-size:.89rem;color:rgba(255,255,255,.74);line-height:1.7}
.step-arrow{
  position:absolute;right:-1.15rem;top:50%;transform:translateY(-50%);
  z-index:2;color:rgba(var(--accent-rgb),.5);font-size:1rem;
}

/* ========== 图文建议区 ========== */
.tips-section{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.tips-wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:3.5rem;align-items:center}
.tips-image{
  position:relative;border-radius:var(--radius-lg);overflow:hidden;
  box-shadow:var(--shadow-lg);min-height:320px;
}
.tips-image img{width:100%;height:100%;object-fit:cover}
.tips-image::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,transparent 58%,rgba(var(--primary-rgb),.45));
}
.tips-image .img-tag{
  position:absolute;left:1.4rem;bottom:1.4rem;z-index:2;
  display:inline-flex;align-items:center;gap:.45rem;
  background:rgba(255,255,255,.92);color:var(--primary);
  font-size:.86rem;font-weight:700;padding:.45rem 1rem;border-radius:999px;
  box-shadow:0 6px 16px rgba(0,0,0,.18);
}
.tips-list{display:flex;flex-direction:column;gap:1rem}
.tip-item{
  display:flex;gap:1.1rem;background:var(--bg);
  border-radius:var(--radius-md);padding:1.3rem 1.5rem;
  border-left:4px solid var(--accent);transition:var(--transition);
}
.tip-item:hover{background:#f0f4f9;transform:translateX(5px);box-shadow:var(--shadow-sm)}
.tip-item i{color:var(--accent);font-size:1.2rem;margin-top:.15rem;flex-shrink:0}
.tip-item h4{font-size:1.03rem;font-weight:700;color:var(--heading);margin-bottom:.25rem}
.tip-item p{font-size:.93rem;color:var(--muted);line-height:1.7}

/* ========== FAQ ========== */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{
  background:var(--card);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);margin-bottom:1rem;
  border:1px solid var(--border);transition:var(--transition);overflow:hidden;
}
.faq-item:hover{border-color:rgba(var(--accent-rgb),.35)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:1rem;
  padding:1.4rem 1.6rem;font-size:1.03rem;font-weight:600;color:var(--heading);
  text-align:left;transition:color .2s;
}
.faq-q:hover{color:var(--primary)}
.faq-q i{color:var(--accent);flex-shrink:0;transition:transform .3s}
.faq-item.active .faq-q i{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .4s ease}
.faq-a-inner{padding:0 1.6rem 1.4rem;color:var(--muted);font-size:.95rem;line-height:1.85}
.faq-item.active .faq-a{max-height:400px}

/* ========== CTA 区块 ========== */
.cta-section{position:relative;padding:5rem 0;overflow:hidden}
.cta-section::before{
  content:"";position:absolute;width:340px;height:340px;border-radius:50%;
  background:rgba(var(--accent-rgb),.2);top:-100px;right:-80px;filter:blur(40px);
}
.cta-inner{position:relative;text-align:center;color:#fff;max-width:760px;margin:0 auto;z-index:2}
.cta-inner h2{font-size:2rem;font-weight:800;margin-bottom:.8rem;letter-spacing:.01em}
.cta-inner p{color:rgba(255,255,255,.84);font-size:1.05rem;margin-bottom:2.2rem;line-height:1.8}
.cta-actions{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}

/* ========== 页脚 ========== */
.site-footer{background:#0a1f35;color:rgba(255,255,255,.6);padding-top:4.5rem;font-size:.93rem}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:3rem;padding-bottom:3rem;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-brand .footer-logo{margin-bottom:1rem}
.footer-logo{display:flex;align-items:center;gap:.6rem;font-size:1.28rem;font-weight:800;color:#fff}
.footer-logo .logo-mark{width:40px;height:40px;font-size:1rem}
.footer-logo .logo-text span{color:var(--accent)}
.footer-brand p{font-size:.93rem;line-height:1.8;margin-bottom:1.4rem;max-width:420px}
.social-links{display:flex;gap:.7rem}
.social-link{
  display:inline-flex;width:38px;height:38px;align-items:center;justify-content:center;
  border-radius:50%;background:rgba(255,255,255,.08);color:rgba(255,255,255,.72);
  transition:var(--transition);
}
.social-link:hover{background:var(--accent);color:#0b1f33;transform:translateY(-3px)}
.footer-col h4{font-size:1.05rem;color:#fff;margin-bottom:1.1rem;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:.7rem}
.footer-col a{color:rgba(255,255,255,.65);transition:color .2s;padding:.1rem 0}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:.5rem;
  padding:1.5rem 0;color:rgba(255,255,255,.5);font-size:.86rem;
}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent)}

/* ========== 响应式断点 ========== */
@media(max-width:1024px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(3,1fr)}
  .step-arrow{display:none}
  .footer-top{grid-template-columns:1fr 1fr}
  .tips-wrap{grid-template-columns:1fr;gap:2.5rem}
  .page-banner h1{font-size:2.2rem}
  .section{padding:4.5rem 0}
}
@media(max-width:768px){
  .main-nav{display:none}
  .mobile-tabbar{display:flex}
  .site-header{position:relative}
  .header-inner{justify-content:center}
  body{padding-bottom:66px}
  .page-banner{padding:4rem 0 3.2rem}
  .page-banner h1{font-size:1.95rem}
  .section{padding:4rem 0}
  .section-title{font-size:1.7rem}
  .tip-item{flex-direction:column;gap:.6rem}
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;text-align:center}
}
@media(max-width:520px){
  .feature-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr}
  .page-banner h1{font-size:1.7rem}
  .page-banner p{font-size:1rem}
  .header-inner{height:68px}
  .site-logo{font-size:1.12rem}
  .logo-mark{width:38px;height:38px;border-radius:12px}
  .section-tag{font-size:.78rem}
  .tip-item{padding:1.1rem 1.2rem}
  .faq-q{padding:1.2rem 1.3rem}
  .faq-a-inner{padding:0 1.3rem 1.2rem}
}