/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #1e56a0;
  --primary-dark: #163d70;
  --primary-light: #e8f0fb;
  --secondary: #0ea5e9;
  --accent: #f59e0b;
  --accent-light: #fef3e0;
  --success: #10b981;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --text: #0f1c2e;
  --text-muted: #5c6c82;
  --border: #dfe6ef;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-xl: 40px;
  --shadow-sm: 0 2px 8px rgba(15,28,46,.06);
  --shadow-md: 0 10px 30px rgba(15,28,46,.08);
  --shadow-lg: 0 24px 60px rgba(15,28,46,.12);
  --shadow-primary: 0 10px 30px rgba(30,86,160,.25);
  --container: 1240px;
  --space-section: 110px;
  --space-section-lg: 140px;
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

/* ===== 基础重置 ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
  height: auto;
}
a {
  color: inherit;
  text-decoration: none;
  transition: color .25s ease, background-color .25s ease, border-color .25s ease, box-shadow .25s ease, transform .25s ease;
}
ul, ol {
  list-style: none;
}
button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
  border: none;
  background: none;
}
button {
  cursor: pointer;
}
:focus-visible {
  outline: 3px solid rgba(14,165,233,.5);
  outline-offset: 2px;
}

/* ===== 工具类 ===== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}
.section {
  padding: var(--space-section) 0;
}
.section-tight {
  padding: 70px 0;
}
.section-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px;
}
.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 16px;
}
.section-title {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  color: var(--text);
}
.section-subtitle {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.7;
}
.text-center { text-align: center; }
.mt-10 { margin-top: 10px; }
.mt-20 { margin-top: 20px; }
.mt-30 { margin-top: 30px; }
.mb-20 { margin-bottom: 20px; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 13px 30px;
  border-radius: 100px;
  border: 2px solid transparent;
  transition: all .3s ease;
  line-height: 1.2;
  white-space: nowrap;
}
.btn i {
  font-size: 14px;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 20px rgba(30,86,160,.3);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(30,86,160,.4);
  color: #fff;
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 12px rgba(30,86,160,.3);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-outline:active {
  transform: translateY(0);
}
.btn-light {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(0,0,0,.12);
}
.btn-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0,0,0,.18);
  color: var(--primary);
}
.btn-sm {
  padding: 9px 20px;
  font-size: 13px;
}
.btn-lg {
  padding: 16px 38px;
  font-size: 16px;
}
.btn-block {
  width: 100%;
  justify-content: center;
}

/* ===== 徽章 / 标签 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}
.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
}
.badge-accent {
  background: var(--accent-light);
  color: #b8750a;
}
.badge-success {
  background: #e6f9f2;
  color: #0a8f6b;
}

/* ===== 浮动Dock导航 ===== */
.site-header {
  position: sticky;
  top: 16px;
  z-index: 999;
  padding: 0 20px;
  pointer-events: none;
}
.nav-dock {
  pointer-events: auto;
  background: rgba(255,255,255,.86);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid rgba(255,255,255,.45);
  border-radius: 100px;
  box-shadow: var(--shadow-md);
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px 0 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
  transition: box-shadow .3s ease;
}
.nav-dock:hover {
  box-shadow: var(--shadow-lg);
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.01em;
}
.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 34px;
}
.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 8px 2px;
  position: relative;
  transition: color .25s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width .3s ease;
}
.nav-link:hover {
  color: var(--primary);
}
.nav-link:hover::after {
  width: 100%;
}
.nav-link.active {
  color: var(--primary);
}
.nav-link.active::after {
  width: 100%;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: background .3s ease;
}
.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: all .3s ease;
}
.nav-toggle:hover {
  background: #d8e6fb;
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center 30% / cover no-repeat;
  padding: 180px 0 150px;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(10,20,40,.82) 10%, rgba(20,55,110,.65) 55%, rgba(10,25,50,.75) 100%);
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -50px;
  left: 0;
  right: 0;
  height: 80px;
  background: var(--bg);
  border-radius: 50% 50% 0 0;
  z-index: 2;
}
.hero-content {
  position: relative;
  z-index: 3;
  max-width: 860px;
  margin: 0 auto;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.14);
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 20px;
  border-radius: 100px;
  margin-bottom: 30px;
}
.hero-badge i {
  color: var(--accent);
}
.hero-title {
  font-size: 58px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  text-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.hero-title span {
  background: linear-gradient(120deg, #fbbf24, #f59e0b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: 19px;
  color: rgba(255,255,255,.88);
  line-height: 1.8;
  max-width: 680px;
  margin: 0 auto 42px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.hero-stats {
  margin-top: 70px;
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}
.stat-pill {
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.18);
  backdrop-filter: blur(10px);
  border-radius: 18px;
  padding: 18px 28px;
  text-align: center;
  min-width: 150px;
  transition: transform .3s ease, background .3s ease;
}
.stat-pill:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,.18);
}
.stat-num {
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  display: block;
  line-height: 1.2;
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,.75);
  margin-top: 4px;
  display: block;
}

/* ===== 核心说明 ===== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.about-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 40px 32px 36px;
  text-align: left;
  box-shadow: var(--shadow-sm);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  position: relative;
  overflow: hidden;
}
.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: opacity .3s ease;
}
.about-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}
.about-card:hover::before {
  opacity: 1;
}
.about-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 22px;
}
.about-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.about-card p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.7;
}
.about-intro {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 60px;
}
.about-intro p {
  font-size: 17px;
  color: var(--text-muted);
  line-height: 1.85;
}

/* ===== 分类入口 ===== */
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.category-card {
  position: relative;
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: transform .35s ease, box-shadow .35s ease;
  display: flex;
  min-height: 360px;
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.category-media {
  flex: 0 0 46%;
  position: relative;
  overflow: hidden;
}
.category-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.category-card:hover .category-media img {
  transform: scale(1.05);
}
.category-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgba(0,0,0,.35));
}
.category-info {
  flex: 1;
  padding: 38px 34px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.category-info .badge {
  margin-bottom: 16px;
}
.category-info h3 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text);
}
.category-info .desc {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 20px;
}
.category-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 22px;
}
.category-meta span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  color: var(--primary);
}
.category-link i {
  transition: transform .3s ease;
}
.category-card:hover .category-link i {
  transform: translateX(4px);
}

/* ===== 最新资讯 ===== */
.news-section {
  background: linear-gradient(180deg, var(--bg) 0%, #eef2f8 100%);
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.news-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  height: 100%;
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
}
.news-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}
.news-cat {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
}
.news-time {
  font-size: 12px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}
.news-card h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color .25s ease;
}
.news-card:hover h3 {
  color: var(--primary);
}
.news-card p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 18px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}
.news-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.news-more i {
  font-size: 13px;
  transition: transform .3s ease;
}
.news-card:hover .news-more i {
  transform: translateX(4px);
}
.empty-tip {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  text-align: center;
  padding: 60px 30px;
  color: var(--text-muted);
  font-size: 16px;
}
.section-more {
  text-align: center;
  margin-top: 46px;
}

/* ===== 服务流程 ===== */
.steps-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px;
  margin-top: 64px;
}
.step-item {
  text-align: center;
  position: relative;
  padding: 0 10px;
}
.step-item::after {
  content: '';
  position: absolute;
  top: 40px;
  right: -18px;
  width: 36px;
  height: 2px;
  background: var(--border);
  display: none;
}
.step-item:last-child::after {
  display: none;
}
.step-num {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  font-size: 28px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  box-shadow: 0 8px 24px rgba(30,86,160,.3);
}
.step-item h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}
.step-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
.step-progress {
  margin-top: 60px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.progress-item {
  margin-bottom: 18px;
}
.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.progress-info span:last-child {
  color: var(--primary);
}
.progress-bar {
  height: 8px;
  background: #eef1f5;
  border-radius: 100px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 100px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 1s ease;
}

/* ===== 平台价值 ===== */
.value-section {
  background: linear-gradient(135deg, #0c192e 0%, #102643 55%, #1e56a0 120%);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.value-section::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14,165,233,.18), transparent 65%);
}
.value-section .section-title {
  color: #fff;
}
.value-section .section-subtitle {
  color: rgba(255,255,255,.75);
}
.value-section .section-eyebrow {
  background: rgba(255,255,255,.12);
  color: #7cc7f7;
}
.value-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  position: relative;
  z-index: 2;
}
.value-card {
  background: rgba(255,255,255,.07);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  backdrop-filter: blur(10px);
  transition: transform .3s ease, background .3s ease;
}
.value-card:hover {
  transform: translateY(-6px);
  background: rgba(255,255,255,.12);
}
.value-icon {
  width: 50px;
  height: 50px;
  border-radius: 14px;
  background: rgba(255,255,255,.14);
  color: #fbbf24;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
}
.value-card h3 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #fff;
}
.value-card p {
  font-size: 13.5px;
  color: rgba(255,255,255,.72);
  line-height: 1.7;
}
.value-cta {
  text-align: center;
  margin-top: 56px;
  position: relative;
  z-index: 2;
}
.value-cta p {
  color: rgba(255,255,255,.85);
  font-size: 16px;
  margin-bottom: 24px;
}

/* ===== FAQ ===== */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: border-color .3s ease, box-shadow .3s ease;
}
.faq-item.active {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-sm);
}
.faq-question {
  width: 100%;
  text-align: left;
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: transparent;
  transition: color .25s ease;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform .35s ease, background .3s ease, color .3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .4s ease;
}
.faq-answer-inner {
  padding: 0 26px 24px;
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid transparent;
}
.faq-item.active .faq-answer-inner {
  border-top-color: var(--border);
  padding-top: 18px;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--bg);
}
.cta-box {
  background: linear-gradient(120deg, var(--primary) 0%, #163d70 60%, #1e56a0 100%);
  border-radius: var(--radius-lg);
  padding: 70px 60px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
}
.cta-box::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -50px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: rgba(14,165,233,.15);
}
.cta-box h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  position: relative;
  z-index: 2;
}
.cta-box p {
  font-size: 16px;
  color: rgba(255,255,255,.85);
  max-width: 520px;
  margin: 0 auto 34px;
  position: relative;
  z-index: 2;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
  z-index: 2;
}
.cta-note {
  margin-top: 22px;
  font-size: 13px;
  color: rgba(255,255,255,.6);
  position: relative;
  z-index: 2;
}

/* ===== 页脚 ===== */
.site-footer {
  background: #0c1524;
  color: rgba(255,255,255,.75);
  padding: 90px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}
.footer-brand .brand-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
}
.footer-brand-name {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.6);
  max-width: 380px;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,.6);
  transition: color .25s ease, padding-left .25s ease;
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 13px;
  color: rgba(255,255,255,.45);
  flex-wrap: wrap;
}

/* ===== 响应式 ===== */
@media screen and (max-width: 1024px) {
  .about-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .category-card {
    flex-direction: column;
    min-height: 0;
  }
  .category-media {
    flex: none;
    height: 220px;
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px 30px;
  }
  .step-item::after {
    display: none;
  }
  .value-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media screen and (max-width: 768px) {
  :root {
    --space-section: 72px;
  }
  .container {
    padding: 0 20px;
  }
  .site-header {
    top: 10px;
    padding: 0 12px;
  }
  .nav-dock {
    height: 60px;
    border-radius: 50px;
    padding: 0 14px 0 18px;
  }
  .brand {
    font-size: 17px;
  }
  .brand-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }
  .main-nav {
    position: fixed;
    top: 80px;
    left: 16px;
    right: 16px;
    background: var(--surface);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    gap: 0;
    padding: 16px 0;
    display: none;
    z-index: 1000;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-link {
    width: 100%;
    text-align: left;
    padding: 14px 28px;
    border-radius: 10px;
    font-size: 15px;
  }
  .nav-link::after {
    display: none;
  }
  .nav-link.active {
    background: var(--primary-light);
  }
  .nav-toggle {
    display: flex;
  }
  .nav-actions .btn {
    display: none;
  }
  .hero {
    padding: 140px 0 110px;
  }
  .hero-title {
    font-size: 38px;
  }
  .hero-subtitle {
    font-size: 16px;
  }
  .hero-stats {
    gap: 12px;
  }
  .stat-pill {
    min-width: 130px;
    padding: 14px 18px;
  }
  .stat-num {
    font-size: 24px;
  }
  .about-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .category-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .category-info {
    padding: 28px 24px;
  }
  .news-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .value-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .section-title {
    font-size: 28px;
  }
  .section-subtitle {
    font-size: 15px;
  }
  .cta-box {
    padding: 50px 28px;
    border-radius: 22px;
  }
  .cta-box h2 {
    font-size: 26px;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .hero-actions .btn {
    width: 100%;
  }
}

@media screen and (max-width: 520px) {
  .hero {
    padding: 120px 0 90px;
  }
  .hero-title {
    font-size: 30px;
  }
  .hero-badge {
    font-size: 12px;
    padding: 5px 14px;
  }
  .stat-pill {
    min-width: 110px;
    padding: 12px 14px;
  }
  .stat-num {
    font-size: 20px;
  }
  .brand {
    font-size: 16px;
  }
  .category-card .category-media {
    height: 180px;
  }
  .category-info h3 {
    font-size: 20px;
  }
  .faq-question {
    font-size: 14.5px;
    padding: 18px 20px;
  }
  .faq-answer-inner {
    padding: 0 20px 20px;
  }
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #1a56db;
            --primary-rgb: 26, 86, 219;
            --primary-dark: #0e3a99;
            --primary-light: #e9effc;
            --accent: #f5b750;
            --accent-rgb: 245, 183, 80;
            --bg-body: #f5f8fc;
            --bg-white: #ffffff;
            --bg-dark: #0e1a32;
            --bg-dark-deep: #091120;
            --text-main: #0f1b31;
            --text-body: #3d4c66;
            --text-muted: #7c8aa5;
            --border-line: #e3eaf3;
            --radius-lg: 22px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-card: 0 6px 26px rgba(14, 25, 48, .06);
            --shadow-hover: 0 16px 44px rgba(14, 25, 48, .12);
            --transition: all .3s ease;
        }

        /* ============ 基础 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", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg-body);
            color: var(--text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul, ol {
            list-style: none;
        }

        button {
            background: none;
            border: none;
            cursor: pointer;
            font-family: inherit;
        }

        input, textarea, select {
            font-family: inherit;
            font-size: 1rem;
        }

        h1, h2, h3, h4, h5, h6 {
            color: var(--text-main);
            line-height: 1.3;
            font-weight: 700;
        }

        /* 可访问性焦点 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(var(--primary-rgb), .35);
            outline-offset: 2px;
            border-radius: 6px;
        }

        /* ============ 容器 ============ */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            padding: .78rem 1.8rem;
            border-radius: 50px;
            font-size: .95rem;
            font-weight: 600;
            line-height: 1.4;
            transition: var(--transition);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(var(--primary-rgb), .25);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(var(--primary-rgb), .3);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 3px 12px rgba(var(--primary-rgb), .2);
        }

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

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

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 14px rgba(0, 0, 0, .08);
        }

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

        .btn-sm {
            padding: .5rem 1.2rem;
            font-size: .875rem;
        }

        .btn-lg {
            padding: .95rem 2.2rem;
            font-size: 1.05rem;
        }

        /* ============ 标签 / 徽章 ============ */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            background: var(--primary-light);
            color: var(--primary);
            font-size: .82rem;
            font-weight: 600;
            padding: .32rem 1rem;
            border-radius: 100px;
            letter-spacing: .02em;
        }

        .badge-accent {
            background: rgba(var(--accent-rgb), .16);
            color: #a9730b;
        }

        .tag {
            display: inline-block;
            padding: .15rem .65rem;
            border-radius: 6px;
            background: var(--bg-body);
            color: var(--primary);
            font-size: .78rem;
            font-weight: 600;
            margin-right: .3rem;
        }

        /* ============ Header 与 Dock 导航 ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: .9rem 0 .5rem;
            background: rgba(245, 248, 252, .86);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
        }

        .nav-dock {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: .6rem;
            background: rgba(255, 255, 255, .96);
            border-radius: 100px;
            padding: .55rem .7rem .55rem .9rem;
            box-shadow: 0 8px 32px rgba(14, 25, 48, .1);
            border: 1px solid rgba(255, 255, 255, .8);
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: .6rem;
            font-size: 1.08rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: .01em;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #4f8dff);
            color: #fff;
            font-size: .98rem;
            box-shadow: 0 4px 12px rgba(var(--primary-rgb), .3);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: .3rem;
        }

        .main-nav .nav-link {
            padding: .48rem 1.05rem;
            border-radius: 100px;
            font-size: .92rem;
            font-weight: 600;
            color: var(--text-body);
            transition: var(--transition);
            position: relative;
        }

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

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: .6rem;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--bg-body);
            padding: 0 10px;
        }

        .nav-toggle span {
            display: block;
            height: 2.5px;
            background: var(--text-main);
            border-radius: 4px;
            transition: var(--transition);
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

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

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* ============ 页面横幅 ============ */
        .page-banner {
            position: relative;
            padding: 7rem 0 5.5rem;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            overflow: hidden;
        }

        .page-banner::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(10, 20, 40, .82) 15%, rgba(14, 30, 60, .66) 55%, rgba(26, 86, 219, .45));
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .page-banner .badge {
            background: rgba(255, 255, 255, .16);
            color: #fff;
            backdrop-filter: blur(4px);
        }

        .page-banner h1 {
            color: #fff;
            font-size: 2.9rem;
            margin: 1.2rem 0 1rem;
            max-width: 720px;
            letter-spacing: .01em;
            line-height: 1.2;
        }

        .page-banner p {
            color: rgba(255, 255, 255, .88);
            font-size: 1.12rem;
            max-width: 620px;
            margin-bottom: 1.8rem;
            line-height: 1.8;
        }

        .page-banner-meta {
            color: rgba(255, 255, 255, .72);
            font-size: .88rem;
            display: flex;
            align-items: center;
            gap: .5rem;
            flex-wrap: wrap;
        }

        .page-banner-meta span {
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }

        /* ============ 通用板块 ============ */
        .section {
            padding: 5.5rem 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 3rem;
        }

        .section-head .badge {
            margin-bottom: 1rem;
        }

        .section-head h2 {
            font-size: 2.1rem;
            margin-bottom: .8rem;
            letter-spacing: .01em;
        }

        .section-head p {
            font-size: 1.02rem;
            color: var(--text-muted);
        }

        /* ============ 平台概览 ============ */
        .overview-wrap {
            display: grid;
            grid-template-columns: 1.05fr .95fr;
            gap: 3.5rem;
            align-items: center;
        }

        .overview-content h2 {
            font-size: 2rem;
            margin-bottom: 1rem;
        }

        .overview-content>p {
            font-size: 1.03rem;
            margin-bottom: 1.8rem;
            color: var(--text-body);
        }

        .overview-points {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .point-item {
            background: var(--bg-white);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 1rem 1.1rem;
            display: flex;
            gap: .8rem;
            align-items: flex-start;
            transition: var(--transition);
        }

        .point-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: transparent;
            transform: translateY(-3px);
        }

        .point-item i {
            color: var(--primary);
            font-size: 1rem;
            margin-top: .2rem;
            width: 20px;
            text-align: center;
        }

        .point-item strong {
            display: block;
            color: var(--text-main);
            font-size: .95rem;
            margin-bottom: .15rem;
        }

        .point-item span {
            font-size: .84rem;
            color: var(--text-muted);
            line-height: 1.55;
        }

        .overview-image {
            position: relative;
        }

        .overview-image img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
            width: 100%;
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

        .overview-image::after {
            content: "";
            position: absolute;
            bottom: -14px;
            right: -14px;
            width: 130px;
            height: 130px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, rgba(var(--primary-rgb), .18), rgba(var(--accent-rgb), .18));
            z-index: -1;
        }

        /* ============ 功能卡片 ============ */
        .feature-card {
            background: var(--bg-white);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.6rem;
            transition: var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), #6ea1ff);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .4s ease;
        }

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

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 1.1rem;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 18px rgba(var(--primary-rgb), .3);
        }

        .feature-card h3 {
            font-size: 1.12rem;
            margin-bottom: .6rem;
        }

        .feature-card p {
            font-size: .92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ============ 流程步骤 ============ */
        .flow-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.8rem;
            position: relative;
            margin-top: 1rem;
        }

        .step-card {
            background: var(--bg-white);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: center;
            position: relative;
            transition: var(--transition);
        }

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

        .step-number {
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.12rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.1rem;
            box-shadow: 0 6px 16px rgba(var(--primary-rgb), .28);
        }

        .step-card:nth-child(2) .step-number {
            background: #3b82f6;
        }

        .step-card:nth-child(3) .step-number {
            background: #6366f1;
        }

        .step-card:nth-child(4) .step-number {
            background: var(--accent);
            box-shadow: 0 6px 16px rgba(var(--accent-rgb), .3);
        }

        .step-card h3 {
            font-size: 1.05rem;
            margin-bottom: .6rem;
        }

        .step-card p {
            font-size: .9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        .step-arrow {
            position: absolute;
            top: 50%;
            right: -1.4rem;
            transform: translateY(-50%);
            color: #c3cede;
            font-size: 1.1rem;
            z-index: 2;
        }

        /* ============ 精选内容卡片 ============ */
        .content-card {
            background: var(--bg-white);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .content-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--primary-light);
        }

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

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

        .content-cover .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(4px);
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, .08);
        }

        .content-body {
            padding: 1.4rem 1.4rem 1.6rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .content-body h3 {
            font-size: 1.08rem;
            margin-bottom: .6rem;
            line-height: 1.45;
        }

        .content-body p {
            font-size: .9rem;
            color: var(--text-muted);
            margin-bottom: 1.1rem;
            flex: 1;
        }

        .content-link {
            font-size: .9rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            transition: var(--transition);
        }

        .content-link:hover {
            gap: .7rem;
            color: var(--primary-dark);
        }

        /* ============ 数据指标 ============ */
        .stats-section {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            padding: 5rem 0;
            color: #fff;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(115deg, rgba(10, 22, 42, .92), rgba(14, 30, 60, .88));
        }

        .stats-section .container {
            position: relative;
            z-index: 2;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            text-align: center;
        }

        .stat-item {
            padding: 1.5rem 1rem;
            border-radius: var(--radius-lg);
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .1);
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(255, 255, 255, .13);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin-bottom: .3rem;
        }

        .stat-number span {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent);
        }

        .stat-label {
            font-size: .92rem;
            color: rgba(255, 255, 255, .8);
            letter-spacing: .03em;
        }

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

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            margin-bottom: .9rem;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(var(--primary-rgb), .3);
        }

        .faq-item.active {
            box-shadow: var(--shadow-card);
            border-color: rgba(var(--primary-rgb), .4);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 1.15rem 1.4rem;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            gap: 1rem;
            transition: var(--transition);
        }

        .faq-question i {
            color: var(--primary);
            transition: transform .3s ease;
            font-size: .85rem;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            display: none;
            padding: 0 1.4rem 1.3rem;
            font-size: .94rem;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px dashed var(--border-line);
            padding-top: 1rem;
        }

        .faq-answer p {
            margin-bottom: 0;
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: 5rem 0;
            background: linear-gradient(120deg, var(--primary), #2f6fed);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -40px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
        }

        .cta-section::after {
            content: "";
            position: absolute;
            bottom: -100px;
            left: -30px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .06);
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            color: #fff;
            font-size: 2.1rem;
            margin-bottom: .8rem;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, .85);
            font-size: 1.05rem;
            margin-bottom: 1.8rem;
        }

        .cta-actions {
            display: flex;
            gap: .8rem;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, .8);
            padding: 4rem 0 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr .8fr .9fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: .6rem;
            margin-bottom: 1rem;
        }

        .footer-brand-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
        }

        .footer-desc {
            font-size: .9rem;
            line-height: 1.8;
            color: rgba(255, 255, 255, .7);
            max-width: 340px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            margin-bottom: 1.1rem;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: .55rem;
        }

        .footer-links a {
            color: rgba(255, 255, 255, .7);
            font-size: .9rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: .35rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 1.6rem;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: .6rem;
            font-size: .84rem;
            color: rgba(255, 255, 255, .55);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .overview-wrap {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .overview-image {
                max-width: 560px;
                margin: 0 auto;
            }

            .flow-steps {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }

            .step-arrow {
                display: none;
            }

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

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }

            .main-nav {
                position: absolute;
                top: calc(100% + 12px);
                left: 50%;
                transform: translateX(-50%);
                width: min(94%, 420px);
                background: #fff;
                border-radius: 18px;
                padding: .8rem;
                box-shadow: 0 16px 40px rgba(14, 25, 48, .14);
                flex-direction: column;
                align-items: stretch;
                gap: .2rem;
                display: none;
                border: 1px solid var(--border-line);
            }

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

            .main-nav .nav-link {
                padding: .7rem 1.1rem;
                border-radius: 12px;
            }

            .site-header {
                padding-top: .6rem;
            }

            .page-banner {
                padding: 5rem 0 3.8rem;
            }

            .page-banner h1 {
                font-size: 2.1rem;
            }

            .page-banner p {
                font-size: 1rem;
            }

            .section {
                padding: 3.8rem 0;
            }

            .section-head h2 {
                font-size: 1.7rem;
            }

            .overview-points {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 1.1rem;
            }

            .nav-dock {
                border-radius: 24px;
                padding: .5rem .6rem .5rem .7rem;
                flex-wrap: wrap;
            }

            .brand {
                font-size: .95rem;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
            }

            .nav-actions .btn-sm {
                font-size: .78rem;
                padding: .4rem .75rem;
            }

            .nav-toggle {
                width: 36px;
                height: 36px;
                padding: 0 8px;
            }

            .page-banner h1 {
                font-size: 1.8rem;
            }

            .page-banner-meta {
                font-size: .8rem;
                gap: .8rem;
            }

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

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

            .stat-number {
                font-size: 2.2rem;
            }

            .cta-inner h2 {
                font-size: 1.6rem;
            }

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

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

/* roulang page: article */
:root {
    --primary: #1e3a8a;
    --primary-light: #3b82f6;
    --primary-soft: #dbeafe;
    --accent: #f59e0b;
    --accent-soft: #fef3c7;
    --bg: #f1f5f9;
    --surface: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --text-muted: #94a3b8;
    --border: #e2e8f0;
    --radius: 14px;
    --radius-sm: 10px;
    --radius-lg: 22px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.04), 0 10px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 16px 30px rgba(0, 0, 0, 0.08), 0 24px 48px rgba(0, 0, 0, 0.06);
    --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); background: var(--bg); color: var(--text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: inherit; }

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

.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 13px 30px; border-radius: 12px; font-size: 15px; font-weight: 600;
    line-height: 1.5; text-decoration: none; border: 1.5px solid transparent;
    cursor: pointer; transition: all .25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:focus-visible { outline: 3px solid rgba(59, 130, 246, .4); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(30, 58, 138, .25); }
.btn-primary:hover { background: var(--primary-light); box-shadow: 0 10px 24px rgba(59, 130, 246, .3); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: var(--primary-soft); }
.btn-light { background: #fff; color: var(--primary); box-shadow: 0 4px 12px rgba(0, 0, 0, .08); }
.btn-light:hover { background: var(--primary-soft); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .6); }
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); border-color: #fff; }
.btn-sm { padding: 8px 18px; font-size: 14px; border-radius: 10px; }

.badge {
    display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px;
    background: var(--primary-soft); color: var(--primary); font-size: 13px;
    font-weight: 600; border-radius: 999px;
}
.badge.outline { background: transparent; border: 1px solid var(--border); color: var(--text-light); }

.site-header {
    position: absolute; top: 0; left: 0; right: 0; z-index: 80;
    padding: 20px 0 0; pointer-events: none;
}
.site-header .container { pointer-events: auto; }
.nav-dock {
    display: flex; align-items: center; justify-content: space-between; gap: 20px;
    background: rgba(255, 255, 255, .92); backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(226, 232, 240, .9); padding: 10px 18px;
    border-radius: 20px; box-shadow: var(--shadow-md);
}
.brand { display: flex; align-items: center; gap: 10px; font-size: 17px; font-weight: 800; color: var(--text); white-space: nowrap; }
.brand-icon {
    display: flex; align-items: center; justify-content: center; width: 38px; height: 38px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: 11px; color: #fff; font-size: 17px;
    box-shadow: 0 4px 12px rgba(30, 58, 138, .28); flex-shrink: 0;
}
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
    padding: 8px 16px; border-radius: 10px; font-size: 15px; font-weight: 500;
    color: var(--text-light); text-decoration: none; transition: all .2s ease;
}
.nav-link:hover { color: var(--primary); background: var(--primary-soft); }
.nav-link.active { color: var(--primary); background: var(--primary-soft); font-weight: 600; }
.nav-actions { display: flex; align-items: center; gap: 10px; }
.nav-toggle {
    display: none; width: 42px; height: 42px; border-radius: 11px;
    border: 1px solid var(--border); background: #fff; cursor: pointer;
    flex-direction: column; align-items: center; justify-content: center; gap: 4px;
}
.nav-toggle span { display: block; width: 18px; height: 2px; background: var(--text); border-radius: 3px; transition: all .3s ease; }
.nav-toggle.active span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.article-hero {
    position: relative; background-size: cover; background-position: center;
    padding: 170px 0 70px; color: #fff; text-align: center; overflow: hidden;
}
.article-hero::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(15, 23, 42, .78), rgba(30, 58, 138, .82));
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    font-size: 14px; color: rgba(255, 255, 255, .75); margin-bottom: 22px; flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255, 255, 255, .9); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb .sep { opacity: .5; }
.article-hero h1 {
    font-size: clamp(30px, 4vw, 46px); font-weight: 800; line-height: 1.3;
    max-width: 900px; margin: 0 auto 24px; letter-spacing: .01em;
}
.article-meta {
    display: flex; align-items: center; justify-content: center; gap: 18px;
    flex-wrap: wrap; font-size: 14px; color: rgba(255, 255, 255, .88);
}
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta i { color: rgba(255, 255, 255, .6); }
.article-meta .badge { background: rgba(255, 255, 255, .16); color: #fff; border: 1px solid rgba(255, 255, 255, .2); }

.article-body-section { padding: 48px 0 36px; }
.article-layout .cell { padding: 0 14px; }
.article-main { margin-bottom: 40px; }

.article-card {
    background: #fff; border-radius: var(--radius-lg); overflow: hidden;
    box-shadow: var(--shadow-md); border: 1px solid rgba(226, 232, 240, .6);
    transition: box-shadow .25s ease;
}
.article-card:hover { box-shadow: var(--shadow-lg); }
.article-cover { height: 320px; overflow: hidden; background: #e2e8f0; }
.article-cover img { width: 100%; height: 100%; object-fit: cover; }
.article-meta-list {
    display: flex; align-items: center; flex-wrap: wrap; gap: 18px;
    padding: 24px 34px 4px; font-size: 14px; color: var(--text-light);
}
.article-meta-list span { display: inline-flex; align-items: center; gap: 8px; }
.article-meta-list i { color: var(--primary-light); }
.article-meta-list .meta-cat { background: var(--primary-soft); color: var(--primary); padding: 4px 12px; border-radius: 999px; font-weight: 600; }
.article-content-body { padding: 18px 34px 28px; }
.article-content-body > *:last-child { margin-bottom: 0; }
.article-content-body h2 { font-size: 1.5rem; font-weight: 700; color: var(--text); margin: 2rem 0 1rem; line-height: 1.4; }
.article-content-body h3 { font-size: 1.25rem; font-weight: 700; color: var(--text); margin: 1.8rem 0 .9rem; }
.article-content-body p { font-size: 1.02rem; line-height: 1.95; color: #334155; margin-bottom: 1.25rem; }
.article-content-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-content-body a:hover { color: var(--primary-light); }
.article-content-body ul, .article-content-body ol { margin: 0 0 1.4rem 1.4rem; }
.article-content-body ul li { list-style: disc; margin-bottom: .5rem; line-height: 1.8; color: #334155; }
.article-content-body ol li { list-style: decimal; margin-bottom: .5rem; line-height: 1.8; color: #334155; }
.article-content-body blockquote {
    border-left: 4px solid var(--primary-light); background: var(--primary-soft);
    padding: 1rem 1.5rem; border-radius: 0 12px 12px 0; margin: 1.6rem 0; color: #334155;
}
.article-content-body blockquote p { margin-bottom: 0; color: #334155; }
.article-content-body img { border-radius: 12px; margin: 1.5rem 0; }
.article-content-body table { width: 100%; margin: 1.5rem 0; border-collapse: collapse; border-radius: 12px; overflow: hidden; }
.article-content-body table th, .article-content-body table td { padding: 10px 16px; border: 1px solid var(--border); text-align: left; }
.article-content-body table th { background: #f8fafc; font-weight: 600; }
.article-content-foot {
    display: flex; align-items: center; flex-wrap: wrap; gap: 10px;
    padding: 0 34px 26px; border-top: 1px solid var(--border);
    padding-top: 20px; margin-top: 8px;
}
.article-bottom-actions {
    display: flex; flex-wrap: wrap; justify-content: space-between; gap: 14px;
    margin-top: 28px; padding: 0 4px;
}
.article-bottom-actions .btn { white-space: nowrap; }

.article-sidebar { display: flex; flex-direction: column; gap: 22px; }
.sidebar-card {
    background: #fff; border-radius: 18px; padding: 26px;
    box-shadow: var(--shadow-sm); border: 1px solid rgba(226, 232, 240, .6);
    transition: box-shadow .25s ease, transform .25s ease;
}
.sidebar-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.sidebar-card-head { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.sidebar-card-head .sidebar-icon {
    display: flex; align-items: center; justify-content: center; width: 38px; height: 38px;
    background: var(--primary-soft); color: var(--primary); border-radius: 10px; font-size: 16px;
}
.sidebar-card-head h3 { font-size: 17px; font-weight: 700; color: var(--text); }
.meta-list li {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 0; border-bottom: 1px dashed var(--border); font-size: 14px;
}
.meta-list li:last-child { border-bottom: none; }
.meta-list li span { color: var(--text-light); }
.meta-list li strong { color: var(--text); font-weight: 600; text-align: right; }
.sidebar-feature .feature-img { border-radius: 12px; overflow: hidden; margin-bottom: 16px; }
.sidebar-feature .feature-img img { width: 100%; height: 120px; object-fit: cover; }
.sidebar-feature h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.sidebar-feature p { font-size: 14px; color: var(--text-light); line-height: 1.7; margin-bottom: 16px; }
.sidebar-feature .btn { width: 100%; }

.related-section { background: #fff; padding: 64px 0; border-top: 1px solid var(--border); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-tag {
    display: inline-block; padding: 5px 16px; background: var(--primary-soft);
    color: var(--primary); font-size: 13px; font-weight: 600;
    border-radius: 999px; margin-bottom: 12px;
}
.section-head h2 { font-size: 30px; font-weight: 800; color: var(--text); margin-bottom: 12px; }
.section-head p { font-size: 15px; color: var(--text-light); line-height: 1.7; }
.related-grid { margin: 0 -14px; }
.related-item { padding: 0 14px; margin-bottom: 28px; }
.related-card {
    display: flex; flex-direction: column; height: 100%;
    background: #fff; border: 1px solid var(--border); border-radius: 16px;
    overflow: hidden; box-shadow: var(--shadow-sm); transition: all .25s ease;
}
.related-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-5px); border-color: transparent; }
.related-thumb { height: 160px; overflow: hidden; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.related-card:hover .related-thumb img { transform: scale(1.05); }
.related-body { padding: 20px; display: block; }
.related-cat { display: inline-block; font-size: 12px; font-weight: 600; color: var(--primary); background: var(--primary-soft); padding: 3px 12px; border-radius: 999px; margin-bottom: 10px; }
.related-title { display: block; font-size: 16px; font-weight: 700; color: var(--text); line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 48px; }
.related-desc { display: block; font-size: 13px; color: var(--text-light); line-height: 1.65; margin-bottom: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 42px; }
.related-time { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-muted); }
.related-time i { color: var(--primary-light); }
.empty-box {
    text-align: center; padding: 44px 20px; color: var(--text-light);
    background: #fff; border: 1px dashed var(--border); border-radius: 16px;
}

.not-found-card {
    background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
    padding: 52px 32px; text-align: center; border: 1px solid rgba(226, 232, 240, .6);
}
.not-found-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 72px; height: 72px; border-radius: 20px; background: var(--primary-soft);
    color: var(--primary); font-size: 30px; margin-bottom: 20px;
}
.not-found-card h2 { font-size: 26px; font-weight: 800; margin-bottom: 12px; }
.not-found-card p { font-size: 15px; color: var(--text-light); margin-bottom: 28px; }

.faq-section { padding: 64px 0; background: var(--bg); }
.faq-grid { margin: 0 -14px; }
.faq-item {
    background: #fff; border-radius: 16px; border: 1px solid var(--border);
    margin-bottom: 16px; overflow: hidden; box-shadow: var(--shadow-sm);
    transition: box-shadow .25s ease;
}
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-question {
    display: flex; justify-content: space-between; align-items: center; gap: 16px;
    padding: 20px 24px; cursor: pointer; font-size: 15px; font-weight: 600; color: var(--text);
}
.faq-question i { color: var(--text-muted); transition: transform .3s ease; font-size: 13px; }
.faq-question.open i { transform: rotate(180deg); color: var(--primary); }
.faq-answer { display: none; padding: 0 24px 22px; font-size: 14px; color: var(--text-light); line-height: 1.8; }
.faq-answer p { margin-bottom: 0; }

.cta-section { padding: 56px 0; }
.cta-card {
    background: linear-gradient(120deg, #1e3a8a, #1e40af 55%, #3b82f6);
    border-radius: 24px; padding: 48px 48px; display: flex; justify-content: space-between;
    align-items: center; gap: 30px; flex-wrap: wrap; box-shadow: 0 18px 40px rgba(30, 58, 138, .3);
    color: #fff;
}
.cta-info h2 { font-size: 26px; font-weight: 800; margin-bottom: 10px; }
.cta-info p { font-size: 15px; opacity: .88; max-width: 520px; margin: 0; }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.site-footer { background: #0f172a; color: #94a3b8; padding: 56px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 42px; margin-bottom: 40px; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-brand .brand-icon { width: 40px; height: 40px; }
.footer-brand-name { font-size: 18px; font-weight: 800; color: #fff; }
.footer-desc { font-size: 14px; line-height: 1.8; color: #94a3b8; max-width: 360px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 700; margin-bottom: 18px; }
.footer-links { display: flex; flex-direction: column; gap: 12px; }
.footer-links a { color: #94a3b8; font-size: 14px; transition: all .2s ease; }
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
    display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px;
    border-top: 1px solid rgba(148, 163, 184, .15); padding-top: 24px;
    font-size: 13px; color: #64748b;
}

@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-col:first-child { grid-column: 1 / -1; }
    .cta-card { padding: 36px 30px; }
}
@media (max-width: 768px) {
    .nav-dock { flex-wrap: wrap; }
    .main-nav {
        display: none; width: 100%; flex-direction: column; gap: 4px;
        background: #fff; padding: 12px 0 8px; border-top: 1px solid var(--border);
    }
    .main-nav.open { display: flex; }
    .nav-link { padding: 12px 16px; }
    .nav-toggle { display: inline-flex; }
    .article-hero { padding: 150px 0 60px; }
    .article-cover { height: 220px; }
    .article-content-body { padding: 16px 22px 22px; }
    .article-meta-list { padding: 20px 22px 4px; }
    .article-content-foot { padding: 0 22px 20px; }
    .section-head h2 { font-size: 26px; }
    .related-item { margin-bottom: 20px; }
    .cta-section { padding: 40px 0; }
    .cta-card { flex-direction: column; text-align: center; }
    .footer-bottom { flex-direction: column; text-align: center; justify-content: center; }
}
@media (max-width: 520px) {
    .container { padding: 0 18px; }
    .nav-dock { padding: 10px 12px; }
    .brand { font-size: 15px; }
    .brand-icon { width: 34px; height: 34px; font-size: 15px; }
    .nav-actions .btn { display: none; }
    .article-hero { padding: 130px 0 50px; }
    .breadcrumb { font-size: 13px; }
    .article-meta { gap: 12px; font-size: 13px; }
    .article-body-section { padding: 34px 0 24px; }
    .article-cover { height: 180px; }
    .article-card { border-radius: 16px; }
    .article-bottom-actions { flex-direction: column; }
    .article-bottom-actions .btn { width: 100%; }
    .related-thumb { height: 130px; }
    .section-head { margin-bottom: 32px; }
    .faq-section { padding: 44px 0; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .cta-card { padding: 28px 22px; }
}

/* roulang page: category2 */
:root{
    --primary:#1b2a6b;
    --primary-deep:#121b4a;
    --primary-light:#3e4bc2;
    --accent:#e8a33d;
    --accent-soft:#fdf3e0;
    --bg:#f5f6fc;
    --white:#ffffff;
    --text:#1c2132;
    --text-weak:#69708c;
    --border:#e4e7f5;
    --radius:18px;
    --radius-sm:10px;
    --shadow:0 12px 40px rgba(27,42,107,.08);
    --shadow-hover:0 20px 50px rgba(27,42,107,.16);
    --space-section:90px;
    --transition:.3s cubic-bezier(.4,0,.2,1);
    --font-stack:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
  html{font-size:16px;scroll-behavior:smooth;}
  body{
    font-family:var(--font-stack);
    background:var(--bg);
    color:var(--text);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;transition:color var(--transition);}
  ul,ol{list-style:none;margin:0;padding:0;}
  button,input,textarea,select{font-family:inherit;font-size:inherit;}
  .container{
    max-width:1200px;
    margin:0 auto;
    padding:0 28px;
  }
  .site-header{
    position:relative;
    z-index:50;
    padding-top:20px;
    background:var(--bg);
  }
  .nav-dock{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    background:var(--white);
    padding:12px 18px;
    border-radius:20px;
    box-shadow:var(--shadow);
    border:1px solid var(--border);
    position:relative;
    transition:box-shadow var(--transition);
  }
  .nav-dock:hover{box-shadow:0 14px 44px rgba(27,42,107,.12);}
  .brand{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:1.2rem;
    font-weight:800;
    color:var(--primary);
    letter-spacing:.2px;
    flex-shrink:0;
  }
  .brand-icon{
    width:36px;
    height:36px;
    display:flex;
    align-items:center;
    justify-content:center;
    background:linear-gradient(135deg,var(--primary-light),var(--primary));
    color:#fff;
    border-radius:10px;
    font-size:.95rem;
  }
  .main-nav{
    display:flex;
    align-items:center;
    gap:8px;
    margin:0;
  }
  .nav-link{
    padding:9px 18px;
    font-size:.92rem;
    font-weight:600;
    color:var(--text-weak);
    border-radius:40px;
    transition:all var(--transition);
    position:relative;
  }
  .nav-link:hover{color:var(--primary);background:rgba(27,42,107,.06);}
  .nav-link.active{color:var(--primary);background:rgba(27,42,107,.08);font-weight:700;}
  .nav-link.active::after{
    content:"";
    position:absolute;
    bottom:4px;
    left:50%;
    transform:translateX(-50%);
    width:18px;
    height:3px;
    background:var(--accent);
    border-radius:4px;
  }
  .nav-actions{
    display:flex;
    align-items:center;
    gap:10px;
    margin-left:auto;
  }
  .nav-toggle{
    display:none;
    flex-direction:column;
    gap:5px;
    background:none;
    border:0;
    cursor:pointer;
    padding:8px;
    border-radius:8px;
  }
  .nav-toggle span{
    width:22px;
    height:2px;
    background:var(--primary);
    border-radius:3px;
    transition:all var(--transition);
  }
  .nav-toggle:hover span{background:var(--accent);}

  .btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-weight:600;
    border-radius:40px;
    justify-content:center;
    letter-spacing:.2px;
    cursor:pointer;
    border:0;
    transition:all var(--transition);
    font-size:.92rem;
    padding:12px 24px;
  }
  .btn i{font-size:.9rem;}
  .btn-primary{
    background:linear-gradient(135deg,var(--primary-light),var(--primary));
    color:#fff;
    box-shadow:0 6px 20px rgba(27,42,107,.22);
  }
  .btn-primary:hover{
    transform:translateY(-3px);
    box-shadow:0 12px 28px rgba(27,42,107,.3);
    color:#fff;
  }
  .btn-primary:active{transform:translateY(-1px);box-shadow:0 6px 16px rgba(27,42,107,.24);}
  .btn-sm{padding:9px 18px;font-size:.84rem;}
  .btn-outline{
    background:transparent;
    color:#fff;
    border:1.5px solid rgba(255,255,255,.7);
  }
  .btn-outline:hover{
    background:rgba(255,255,255,.12);
    border-color:#fff;
    color:#fff;
    transform:translateY(-3px);
  }
  .btn-light{
    background:var(--white);
    color:var(--primary);
    box-shadow:0 6px 20px rgba(0,0,0,.08);
  }
  .btn-light:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(0,0,0,.14);color:var(--primary);}

  .page-hero{
    position:relative;
    min-height:430px;
    display:flex;
    align-items:center;
    margin-top:18px;
    border-radius:28px;
    background:linear-gradient(rgba(18,27,74,.78),rgba(27,42,107,.72)),url('/assets/images/backpic/back-2.png') no-repeat center center/cover;
    overflow:hidden;
    padding:70px 0;
    border:1px solid rgba(255,255,255,.12);
  }
  .page-hero::after{
    content:"";
    position:absolute;
    right:-100px;
    top:-80px;
    width:300px;
    height:300px;
    background:radial-gradient(circle,rgba(232,163,61,.35),transparent 70%);
    border-radius:50%;
  }
  .page-hero .container{position:relative;z-index:2;text-align:center;}
  .hero-badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.2);
    color:#fff;
    padding:7px 20px;
    border-radius:40px;
    font-size:.82rem;
    font-weight:600;
    letter-spacing:1px;
    margin-bottom:20px;
    backdrop-filter:blur(8px);
  }
  .hero-badge i{color:var(--accent);}
  .page-hero h1{
    color:#fff;
    font-size:clamp(2rem,4vw,3rem);
    font-weight:900;
    letter-spacing:.5px;
    line-height:1.25;
    margin-bottom:16px;
  }
  .page-hero h1 span{
    color:var(--accent);
  }
  .page-hero .hero-desc{
    color:rgba(255,255,255,.82);
    font-size:1.08rem;
    max-width:620px;
    margin:0 auto 32px;
  }
  .hero-search{
    max-width:560px;
    margin:0 auto;
    position:relative;
  }
  .hero-search input{
    width:100%;
    border-radius:50px;
    border:none;
    padding:16px 56px 16px 24px;
    box-shadow:0 12px 34px rgba(0,0,0,.16);
    font-size:.95rem;
    outline:none;
    transition:box-shadow var(--transition);
    background:#fff;
  }
  .hero-search input:focus{box-shadow:0 0 0 4px rgba(232,163,61,.3),0 12px 34px rgba(0,0,0,.16);}
  .hero-search button{
    position:absolute;
    right:6px;
    top:5px;
    bottom:5px;
    background:linear-gradient(135deg,var(--primary-light),var(--primary));
    color:#fff;
    border:0;
    border-radius:40px;
    padding:0 22px;
    cursor:pointer;
    font-weight:600;
    transition:all var(--transition);
    display:flex;
    align-items:center;
    gap:6px;
  }
  .hero-search button:hover{background:var(--accent);transform:scale(1.03);}

  .section{padding:var(--space-section) 0;}
  .section-sm{padding:56px 0;}
  .section-header{
    text-align:center;
    max-width:680px;
    margin:0 auto 52px;
  }
  .section-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:.78rem;
    font-weight:700;
    letter-spacing:2px;
    text-transform:uppercase;
    color:var(--accent);
    background:var(--accent-soft);
    padding:6px 18px;
    border-radius:40px;
    margin-bottom:16px;
  }
  .section-header h2{
    font-size:clamp(1.7rem,3vw,2.3rem);
    font-weight:900;
    color:var(--primary-deep);
    line-height:1.3;
    margin-bottom:14px;
    letter-spacing:.3px;
  }
  .section-header h2 em{
    font-style:normal;
    color:var(--accent);
  }
  .section-header p{
    color:var(--text-weak);
    font-size:1rem;
  }

  .category-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:28px;
  }
  .help-card{
    background:var(--white);
    border-radius:var(--radius);
    border:1px solid var(--border);
    box-shadow:var(--shadow);
    overflow:hidden;
    transition:all var(--transition);
    display:flex;
    flex-direction:column;
  }
  .help-card:hover{
    transform:translateY(-8px);
    box-shadow:var(--shadow-hover);
    border-color:rgba(27,42,107,.25);
  }
  .help-card-img{
    height:190px;
    overflow:hidden;
    position:relative;
    background:#eef0f8;
  }
  .help-card-img img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .6s cubic-bezier(.4,0,.2,1);
  }
  .help-card:hover .help-card-img img{transform:scale(1.08);}
  .help-card-img::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,transparent 50%,rgba(18,27,74,.38));
  }
  .help-card-tag{
    position:absolute;
    top:16px;
    left:16px;
    z-index:2;
    background:rgba(255,255,255,.88);
    color:var(--primary);
    font-size:.78rem;
    font-weight:700;
    padding:5px 14px;
    border-radius:40px;
    backdrop-filter:blur(7px);
  }
  .help-card-body{
    padding:28px 26px;
    display:flex;
    flex-direction:column;
    flex:1;
  }
  .help-card-body h3{
    font-size:1.16rem;
    font-weight:800;
    color:var(--primary-deep);
    margin-bottom:10px;
  }
  .help-card-body p{
    color:var(--text-weak);
    font-size:.9rem;
    line-height:1.65;
    margin-bottom:18px;
    flex:1;
  }
  .help-card-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-weight:700;
    font-size:.88rem;
    color:var(--primary);
    border-top:1px solid var(--border);
    padding-top:16px;
    transition:all var(--transition);
  }
  .help-card-link i{transition:transform var(--transition);font-size:.82rem;}
  .help-card-link:hover{color:var(--accent);}
  .help-card-link:hover i{transform:translateX(5px);}

  .steps-section{
    background:linear-gradient(120deg,var(--primary-deep),var(--primary));
    border-radius:32px;
    margin:0 auto;
    padding:74px 40px;
    position:relative;
    overflow:hidden;
    border:1px solid rgba(255,255,255,.08);
  }
  .steps-section::before{
    content:"";
    position:absolute;
    left:-70px;
    bottom:-70px;
    width:220px;
    height:220px;
    border-radius:50%;
    background:rgba(232,163,61,.18);
    filter:blur(10px);
  }
  .steps-section::after{
    content:"";
    position:absolute;
    right:-50px;
    top:-50px;
    width:180px;
    height:180px;
    border-radius:50%;
    background:rgba(255,255,255,.08);
  }
  .steps-section .section-header h2{color:#fff;}
  .steps-section .section-header h2 em{color:var(--accent);}
  .steps-section .section-header p{color:rgba(255,255,255,.72);}
  .steps-section .section-tag{background:rgba(255,255,255,.14);color:var(--accent);}
  .steps-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
    position:relative;
    z-index:2;
  }
  .step-item{
    background:rgba(255,255,255,.09);
    border:1px solid rgba(255,255,255,.15);
    border-radius:20px;
    padding:32px 24px;
    text-align:center;
    backdrop-filter:blur(6px);
    transition:all var(--transition);
  }
  .step-item:hover{background:rgba(255,255,255,.16);transform:translateY(-5px);}
  .step-num{
    width:54px;
    height:54px;
    margin:0 auto 18px;
    border-radius:16px;
    background:linear-gradient(135deg,var(--accent),#c98220);
    color:#fff;
    font-weight:900;
    font-size:1.3rem;
    display:flex;
    align-items:center;
    justify-content:center;
    box-shadow:0 8px 20px rgba(0,0,0,.24);
  }
  .step-item h3{color:#fff;font-size:1.04rem;font-weight:700;margin-bottom:8px;}
  .step-item p{color:rgba(255,255,255,.75);font-size:.84rem;line-height:1.6;}

  .tools-section{
    display:grid;
    grid-template-columns:2fr 1fr;
    gap:30px;
    align-items:stretch;
  }
  .tools-list{
    background:var(--white);
    border-radius:var(--radius);
    border:1px solid var(--border);
    box-shadow:var(--shadow);
    overflow:hidden;
  }
  .tools-list-header{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:24px 28px;
    border-bottom:1px solid var(--border);
    background:linear-gradient(135deg,rgba(27,42,107,.03),rgba(232,163,61,.05));
  }
  .tools-list-header h3{font-size:1.1rem;font-weight:800;color:var(--primary-deep);display:flex;align-items:center;gap:10px;}
  .tools-list-header h3 i{color:var(--accent);}
  .tools-list-header a{font-size:.82rem;color:var(--text-weak);font-weight:600;}
  .tools-list-header a:hover{color:var(--primary);}
  .tools-item{
    display:flex;
    gap:20px;
    align-items:center;
    padding:22px 28px;
    border-bottom:1px solid var(--border);
    transition:background var(--transition);
  }
  .tools-item:hover{background:#fafbff;}
  .tools-item:last-child{border-bottom:none;}
  .tools-item-icon{
    width:46px;
    height:46px;
    border-radius:14px;
    background:rgba(27,42,107,.08);
    color:var(--primary);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:1.1rem;
    flex-shrink:0;
    transition:all var(--transition);
  }
  .tools-item:hover .tools-item-icon{background:var(--primary);color:#fff;}
  .tools-item-body{flex:1;min-width:0;}
  .tools-item-body h4{font-size:.98rem;font-weight:700;color:var(--text);margin-bottom:4px;}
  .tools-item-body p{font-size:.84rem;color:var(--text-weak);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .tools-item-action{color:var(--text-weak);font-size:.9rem;transition:all var(--transition);}
  .tools-item:hover .tools-item-action{color:var(--accent);transform:translateX(4px);}
  .tools-side{
    background:linear-gradient(135deg,var(--primary),var(--primary-deep));
    border-radius:var(--radius);
    padding:30px;
    color:#fff;
    box-shadow:var(--shadow);
    display:flex;
    flex-direction:column;
    justify-content:center;
    position:relative;
    overflow:hidden;
  }
  .tools-side::after{
    content:"";
    position:absolute;
    right:-40px;
    bottom:-40px;
    width:140px;
    height:140px;
    background:rgba(232,163,61,.22);
    border-radius:50%;
  }
  .tools-side h3{font-size:1.2rem;font-weight:800;margin-bottom:12px;position:relative;z-index:2;}
  .tools-side p{color:rgba(255,255,255,.75);font-size:.88rem;line-height:1.7;margin-bottom:24px;position:relative;z-index:2;}
  .tools-side .btn{position:relative;z-index:2;align-self:flex-start;}

  .faq-section .accordion{
    max-width:820px;
    margin:0 auto;
    background:transparent;
    border:none;
  }
  .toggle-pane{
    display:none;
    overflow:hidden;
    transition:max-height .4s ease;
  }
  .accordion-item{
    background:var(--white);
    border:1px solid var(--border) !important;
    border-radius:16px !important;
    margin-bottom:16px !important;
    box-shadow:0 4px 20px rgba(27,42,107,.04);
    overflow:hidden;
    transition:box-shadow var(--transition);
  }
  .accordion-item:hover{box-shadow:0 10px 30px rgba(27,42,107,.09);}
  .accordion-title{
    background:transparent !important;
    padding:22px 26px !important;
    font-size:1rem;
    font-weight:700;
    color:var(--text) !important;
    border:none !important;
    display:flex;
    align-items:center;
    gap:14px;
    border-radius:16px !important;
  }
  .accordion-title::before{
    content:"\f059";
    font-family:"Font Awesome 6 Free";
    font-weight:900;
    color:var(--accent);
    font-size:1rem;
  }
  .accordion-title:hover{background:rgba(27,42,107,.03) !important;color:var(--primary) !important;}
  .accordion-title .acc-plus{
    margin-left:auto;
    width:24px;
    height:24px;
    border-radius:50%;
    background:rgba(27,42,107,.07);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:.75rem;
    transition:all var(--transition);
  }
  .accordion-item.is-open .accordion-title .acc-plus{
    background:var(--accent);
    color:#fff;
    transform:rotate(135deg);
  }
  .accordion-panel{
    border:none !important;
    padding:6px 26px 24px 56px !important;
    background:transparent !important;
  }
  .accordion-panel p{
    font-size:.92rem;
    color:var(--text-weak);
    line-height:1.8;
  }
  .accordion-panel a{color:var(--primary);font-weight:600;border-bottom:1px dashed rgba(27,42,107,.3);}
  .accordion-panel a:hover{color:var(--accent);border-color:var(--accent);}

  .contact-cta{
    background:linear-gradient(120deg,rgba(18,27,74,.9),rgba(27,42,107,.86)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    border-radius:30px;
    padding:74px 40px;
    text-align:center;
    position:relative;
    overflow:hidden;
    border:1px solid rgba(255,255,255,.1);
  }
  .contact-cta::before{
    content:"";
    position:absolute;
    top:-70px;
    left:-60px;
    width:220px;
    height:220px;
    background:rgba(232,163,61,.18);
    border-radius:50%;
    filter:blur(20px);
  }
  .contact-cta h2{color:#fff;font-size:1.9rem;font-weight:900;margin-bottom:14px;}
  .contact-cta h2 span{color:var(--accent);}
  .contact-cta p{color:rgba(255,255,255,.75);font-size:1rem;max-width:540px;margin:0 auto 30px;}
  .contact-cta .cta-btns{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;}

  .site-footer{
    background:var(--primary-deep);
    color:rgba(255,255,255,.72);
    margin-top:80px;
    padding:70px 0 32px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.4fr .8fr .8fr;
    gap:50px;
    padding-bottom:44px;
    border-bottom:1px solid rgba(255,255,255,.1);
  }
  .footer-brand{
    display:flex;
    align-items:center;
    gap:12px;
    font-size:1.25rem;
    font-weight:800;
    color:#fff;
    margin-bottom:14px;
  }
  .footer-brand .brand-icon{
    width:42px;
    height:42px;
    font-size:1.05rem;
  }
  .footer-brand-name{color:#fff;}
  .footer-desc{
    font-size:.9rem;
    line-height:1.8;
    color:rgba(255,255,255,.62);
    max-width:340px;
  }
  .footer-col h4{
    color:#fff;
    font-size:.95rem;
    font-weight:700;
    margin-bottom:20px;
    letter-spacing:.5px;
  }
  .footer-links{display:flex;flex-direction:column;gap:12px;}
  .footer-links a{
    font-size:.88rem;
    color:rgba(255,255,255,.62);
    transition:all var(--transition);
    display:inline-flex;
    align-items:center;
    gap:6px;
  }
  .footer-links a::before{content:"\f105";font-family:"Font Awesome 6 Free";font-size:.75rem;color:var(--accent);}
  .footer-links a:hover{color:#fff;transform:translateX(4px);}
  .footer-bottom{
    display:flex;
    justify-content:space-between;
    gap:12px;
    align-items:center;
    padding-top:30px;
    font-size:.82rem;
    color:rgba(255,255,255,.45);
    flex-wrap:wrap;
  }

  @media (max-width:1024px){
    :root{--space-section:70px;}
    .category-grid{grid-template-columns:repeat(2,1fr);}
    .steps-grid{grid-template-columns:repeat(2,1fr);}
    .tools-section{grid-template-columns:1fr;}
  }
  @media (max-width:768px){
    .nav-dock{flex-wrap:wrap;padding:14px 16px;border-radius:16px;}
    .nav-actions{margin-left:auto;}
    .nav-toggle{display:flex;}
    .main-nav{
      display:none;
      flex-direction:column;
      width:100%;
      gap:4px;
      padding-top:10px;
      border-top:1px solid var(--border);
      margin-top:6px;
    }
    .main-nav.open{display:flex;}
    .nav-link{width:100%;text-align:center;}
    .nav-link.active::after{position:static;transform:none;margin:4px auto 0;}
    .page-hero{min-height:360px;border-radius:20px;}
    .page-hero h1{font-size:1.8rem;}
    .page-hero .hero-desc{font-size:.95rem;}
    .category-grid{grid-template-columns:1fr;}
    .steps-grid{grid-template-columns:1fr;}
    .steps-section{padding:64px 22px;}
    .tools-list-header{padding:18px 20px;}
    .tools-item{padding:18px 20px;flex-wrap:wrap;}
    .tools-item-body p{white-space:normal;}
    .contact-cta{padding:58px 24px;border-radius:22px;}
    .contact-cta h2{font-size:1.4rem;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
    .section-header p{font-size:.9rem;}
  }
  @media (max-width:520px){
    .container{padding:0 18px;}
    .site-header{padding-top:12px;}
    .brand .brand-icon{width:32px;height:32px;font-size:.85rem;}
    .brand{font-size:1rem;}
    .nav-actions .btn-sm i{display:none;}
    .page-hero{min-height:320px;padding:50px 0;}
    .page-hero h1{font-size:1.55rem;}
    .hero-badge{font-size:.72rem;padding:5px 14px;}
    .hero-search input{padding:14px 50px 14px 18px;font-size:.86rem;}
    .hero-search button{padding:0 16px;font-size:.8rem;}
    .hero-search button span{display:none;}
    .section{padding:58px 0;}
    .section-header{margin-bottom:36px;}
    .help-card-body{padding:22px 20px;}
    .steps-section{padding:46px 18px;border-radius:18px;}
    .step-item{padding:26px 18px;}
    .tools-list-header h3{font-size:.96rem;}
    .tools-item{flex-direction:column;text-align:center;gap:12px;}
    .tools-item-action{transform:rotate(90deg);}
    .tools-item:hover .tools-item-action{transform:rotate(90deg) translateX(4px);}
    .accordion-title{padding:18px 18px !important;font-size:.9rem !important;}
    .accordion-panel{padding:4px 18px 20px 20px !important;}
    .contact-cta .cta-btns{flex-direction:column;align-items:center;}
    .contact-cta .btn{width:100%;}
    .footer-grid{grid-template-columns:1fr;gap:30px;}
    .footer-bottom{flex-direction:column;text-align:center;justify-content:center;}
  }
  .focus-visible:focus-visible{
    outline:3px solid var(--accent);
    outline-offset:3px;
    border-radius:4px;
  }