/* roulang page: index */
/* ============ 设计变量 ============ */
:root {
  --primary: #2E7CF6;
  --primary-light: #E8F1FE;
  --accent: #F6B73C;
  --accent-dark: #e0a52e;
  --page-bg: #F7FAFC;
  --dark-1: #1B2A44;
  --dark-2: #2E4A7C;
  --text-body: #1D2B45;
  --text-secondary: #5C6C85;
  --text-muted: #9AAABF;
  --border-color: #E3EAF2;
  --card-radius: 14px;
  --btn-radius: 10px;
  --card-shadow: 0 4px 24px rgba(30,60,120,0.08);
  --card-shadow-hover: 0 12px 36px rgba(30,60,120,0.14);
  --space-lg: 88px;
  --space-md: 56px;
  --space-sm: 32px;
}

/* ============ Reset / 基础 ============ */
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-body);
  background: var(--page-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .25s; }
a:hover { color: var(--dark-2); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-body);
  margin-top: 0;
}
h1 { font-size: 40px; }
h2 { font-size: 30px; }
h3 { font-size: 20px; }
h4 { font-size: 17px; }
p { margin-top: 0; margin-bottom: 1rem; }
.container { max-width: 1200px; }

/* ============ 通用组件 ============ */
.section-pad { padding: var(--space-lg) 0; }
.section-bg-white { background: #ffffff; }
.section-bg-alt { background: rgba(232,241,254,0.7); }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.section-head { margin-bottom: 48px; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { color: var(--text-secondary); font-size: 15px; max-width: 720px; margin: 0 auto; }
.text-center { text-align: center; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--btn-radius);
  font-size: 16px;
  font-weight: 500;
  padding: 10px 24px;
  border: 1px solid transparent;
  transition: all .25s ease;
  letter-spacing: .02em;
}
.btn:focus, .btn:focus-visible { outline: none; box-shadow: 0 0 0 3px rgba(46,124,246,0.2); }
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: #468dee; border-color: #468dee; color: #fff; transform: translateY(-1px); }
.btn-primary:active { background: #2066d0; border-color: #2066d0; transform: translateY(0); }
.btn-accent {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--dark-1);
}
.btn-accent:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: var(--dark-1); transform: translateY(-1px); }
.btn-accent:active { background: #d09826; border-color: #d09826; }
.btn-outline-light {
  background: transparent;
  border: 1.5px solid rgba(255,255,255,0.75);
  color: #fff;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; color: #fff; transform: translateY(-1px); }
.btn-outline-primary {
  background: transparent;
  border: 1.5px solid var(--primary);
  color: var(--primary);
}
.btn-outline-primary:hover { background: rgba(46,124,246,0.08); color: var(--primary); }
.btn-lg { padding: 13px 32px; font-size: 17px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }

/* 标签 */
.badge-cat {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 999px;
  line-height: 1.5;
}

/* ============ 头部 ============ */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 2px 12px rgba(30,60,120,0.04);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-row {
  display: flex;
  align-items: center;
  gap: 28px;
  min-height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text-body);
}
.brand:hover { color: var(--text-body); }
.brand-star {
  color: var(--primary);
  flex-shrink: 0;
}
.brand-text {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .01em;
  white-space: nowrap;
}
.main-nav { flex: 1; }
.nav-list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
}
.nav-link {
  display: inline-block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  position: relative;
  transition: color .2s;
}
.nav-link:hover { color: var(--primary); background: var(--primary-light); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: -2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.search-wrap {
  position: relative;
  width: 220px;
}
.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}
.search-input {
  width: 100%;
  height: 40px;
  border: 1px solid var(--border-color);
  border-radius: var(--btn-radius);
  background: var(--page-bg);
  padding: 0 14px 0 36px;
  font-size: 14px;
  color: var(--text-body);
  transition: border-color .25s, box-shadow .25s;
}
.search-input::placeholder { color: var(--text-muted); }
.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46,124,246,0.15);
  background: #fff;
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-body);
  border-radius: 2px;
  transition: all .3s;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============ Hero ============ */
.hero-section {
  background: radial-gradient(ellipse at 25% 20%, #3A5E9E 0%, var(--dark-2) 45%, var(--dark-1) 100%);
  color: #fff;
  padding: 96px 0 88px;
  position: relative;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle 2px at 12% 28%, rgba(255,255,255,0.5) 0, transparent 50%),
    radial-gradient(circle 3px at 65% 18%, rgba(255,255,255,0.3) 0, transparent 50%),
    radial-gradient(circle 2px at 38% 75%, rgba(255,255,255,0.4) 0, transparent 50%),
    radial-gradient(circle 1px at 82% 55%, rgba(255,255,255,0.5) 0, transparent 50%),
    radial-gradient(circle 1px at 18% 85%, rgba(255,255,255,0.35) 0, transparent 50%),
    radial-gradient(circle 2px at 92% 78%, rgba(255,255,255,0.3) 0, transparent 50%),
    radial-gradient(circle 1px at 45% 35%, rgba(255,255,255,0.25) 0, transparent 50%),
    radial-gradient(circle 1px at 72% 65%, rgba(255,255,255,0.2) 0, transparent 50%);
  pointer-events: none;
}
.hero-section .container { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--accent);
  background: rgba(246,183,60,0.14);
  border: 1px solid rgba(246,183,60,0.35);
  padding: 5px 18px;
  border-radius: 999px;
  margin-bottom: 22px;
}
.hero-title {
  color: #fff;
  font-size: 42px;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: .01em;
}
.hero-desc {
  color: rgba(255,255,255,0.72);
  font-size: 17px;
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-visual {
  position: relative;
  background: rgba(255,255,255,0.96);
  border-radius: var(--card-radius);
  padding: 12px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.25);
}
.hero-visual img {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
  aspect-ratio: 4/3;
}
.hero-float-card {
  position: absolute;
  bottom: 28px;
  left: -22px;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--card-shadow-hover);
  padding: 14px 22px;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.3;
}
.hero-float-card .float-num {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}
.hero-float-card .float-label {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ============ 数据条 ============ */
.stats-band {
  background: #fff;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 40px 0;
}
.stat-item { text-align: center; }
.stat-number {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}
.stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 6px;
}

/* ============ 核心优势 ============ */
.feature-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 32px 28px;
  height: 100%;
  box-shadow: var(--card-shadow);
  transition: transform .3s ease, box-shadow .3s ease;
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}
.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--primary);
  border-radius: 12px;
  color: var(--primary);
  margin-bottom: 20px;
  background: var(--primary-light);
}
.feature-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); font-size: 14px; line-height: 1.7; margin-bottom: 16px; }
.feature-more {
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap .25s;
}
.feature-more:hover { gap: 10px; color: var(--dark-2); }

/* ============ 演示区 ============ */
.demo-section { background: rgba(232,241,254,0.7); }
.demo-visual {
  background: #fff;
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  border: 1px solid var(--border-color);
}
.browser-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: #f0f4f9;
  border-bottom: 1px solid var(--border-color);
}
.browser-bar .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot-red { background: #ff5f57; }
.dot-yellow { background: #febc2e; }
.dot-green { background: #28c840; }
.browser-url {
  margin-left: 10px;
  font-size: 12px;
  color: var(--text-muted);
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 2px 16px;
  flex: 1;
  text-align: center;
}
.demo-visual img { width: 100%; object-fit: cover; aspect-ratio: 16/10; }
.demo-content h2 { margin-bottom: 16px; }
.demo-content > p { color: var(--text-secondary); font-size: 15px; margin-bottom: 24px; }
.demo-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 15px;
  color: var(--text-body);
  padding: 8px 0;
}
.demo-list svg { flex-shrink: 0; margin-top: 5px; color: var(--accent); }

/* ============ 证据区 ============ */
.proof-quote-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 32px 30px;
  box-shadow: var(--card-shadow);
  height: 100%;
}
.quote-mark {
  color: var(--accent);
  margin-bottom: 10px;
}
.proof-quote-card blockquote {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-body);
  margin: 0 0 20px;
  border: none;
  padding: 0;
}
.proof-customer {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
}
.customer-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}
.customer-name { font-size: 14px; font-weight: 600; color: var(--text-body); }
.customer-role { font-size: 12px; color: var(--text-muted); }
.metric-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  padding: 24px 28px;
  box-shadow: var(--card-shadow);
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.metric-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.metric-label { font-size: 14px; color: var(--text-secondary); }
.metric-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
}
.progress-track {
  height: 6px;
  background: #EAF0F6;
  border-radius: 999px;
  overflow: hidden;
  flex: 1;
  max-width: 180px;
}
.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--primary), #5290f7);
}
.badge-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 36px; }
.honor-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
  padding: 8px 22px;
  border-radius: 999px;
  transition: background .25s;
}
.honor-badge:hover { background: #d9e7fd; }
.honor-badge svg { flex-shrink: 0; }

/* ============ 价格区 ============ */
.price-card {
  background: #fff;
  border-radius: var(--card-radius);
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  height: 100%;
  position: relative;
  transition: transform .3s, box-shadow .3s;
}
.price-card:hover { transform: translateY(-4px); box-shadow: var(--card-shadow-hover); }
.price-card .price-stripe {
  height: 6px;
  background: var(--primary);
}
.price-card.recommend .price-stripe { background: var(--accent); }
.recommend-tag {
  position: absolute;
  top: 18px;
  right: 18px;
  background: var(--accent);
  color: var(--dark-1);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 999px;
  z-index: 1;
  letter-spacing: .04em;
}
.price-body { padding: 32px 28px; }
.price-name { font-size: 18px; font-weight: 700; color: var(--text-body); margin-bottom: 6px; }
.price-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.price-amount { font-size: 36px; font-weight: 700; color: var(--accent); line-height: 1.2; margin-bottom: 22px; }
.price-amount small { font-size: 14px; font-weight: 400; color: var(--text-muted); margin-left: 4px; }
.price-features { margin-bottom: 28px; }
.price-features li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 5px 0;
}
.price-features svg { flex-shrink: 0; margin-top: 4px; color: var(--primary); }
.price-btn { width: 100%; }

/* ============ FAQ ============ */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border-color);
  transition: background .25s;
}
.faq-item:first-child { border-top: 1px solid var(--border-color); }
.faq-item.active { background: #F0F5FD; box-shadow: inset 4px 0 0 var(--primary); border-radius: 6px; }
.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  background: transparent;
  border: none;
  padding: 20px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-body);
  text-align: left;
  cursor: pointer;
  transition: color .2s;
}
.faq-question:hover { color: var(--primary); }
.faq-icon { flex-shrink: 0; color: var(--text-muted); transition: transform .3s, color .2s; }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--primary); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 20px 22px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* ============ 最新资讯 ============ */
.news-section { background: #fff; }
.news-card {
  background: #fff;
  border: 1px solid var(--border-color);
  border-radius: var(--card-radius);
  overflow: hidden;
  height: 100%;
  box-shadow: var(--card-shadow);
  transition: transform .3s, box-shadow .3s;
  display: flex;
  flex-direction: column;
}
.news-card:hover { transform: translateY(-4px); box-shadow: var(--card-shadow-hover); }
.article-cover {
  display: block;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #eef3f8;
  position: relative;
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.news-card:hover .article-cover img { transform: scale(1.05); }
.cover-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  background: var(--primary-light);
}
.article-body { padding: 22px 24px 20px; display: flex; flex-direction: column; flex: 1; }
.article-cat { margin-bottom: 10px; }
.article-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 10px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.article-title a { color: var(--text-body); }
.article-title a:hover { color: var(--primary); }
.article-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}
.article-meta .read-more {
  margin-left: auto;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
}
.article-meta .read-more:hover { color: var(--dark-2); }
.news-empty {
  text-align: center;
  padding: 80px 20px;
  background: var(--page-bg);
  border: 1px dashed var(--border-color);
  border-radius: var(--card-radius);
  color: var(--text-secondary);
  font-size: 15px;
}

/* ============ 前置 CTA ============ */
.cta-section {
  background: var(--primary-light);
  padding: 72px 0;
}
.cta-box {
  background: #fff;
  border-radius: 18px;
  box-shadow: var(--card-shadow);
  padding: 44px 40px;
  max-width: 900px;
  margin: 0 auto;
}
.cta-box h3 { font-size: 26px; margin-bottom: 10px; }
.cta-box > p { color: var(--text-secondary); font-size: 15px; max-width: 560px; margin: 0 auto 32px; }
.lead-form .form-control {
  height: 46px;
  border: 1px solid var(--border-color);
  border-radius: var(--btn-radius);
  font-size: 14px;
  color: var(--text-body);
  padding: 0 16px;
  background: var(--page-bg);
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.lead-form .form-control::placeholder { color: var(--text-muted); }
.lead-form .form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46,124,246,0.15);
  background: #fff;
  outline: none;
}
.form-feedback {
  margin-top: 16px;
  color: #2EA56C;
  font-size: 14px;
  font-weight: 500;
}
.cta-btn {
  height: 46px;
  padding: 0 36px;
  font-size: 16px;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--dark-1);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
}
.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-brand svg { color: #7AABF8; }
.footer-desc { font-size: 14px; line-height: 1.75; color: rgba(255,255,255,0.55); margin-bottom: 24px; }
.footer-title {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  transition: color .2s;
}
.footer-links a:hover { color: #7AABF8; }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 12px;
}
.footer-contact svg { flex-shrink: 0; margin-top: 4px; color: #7AABF8; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
  margin-top: 40px;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ============ 浮动 CTA ============ */
.float-cta {
  position: fixed;
  right: 20px;
  bottom: 40px;
  z-index: 99;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--accent);
  border: none;
  box-shadow: 0 8px 24px rgba(246,183,60,0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  cursor: pointer;
  transition: all .3s ease;
}
.float-cta:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 12px 28px rgba(246,183,60,0.45); }
.float-cta svg { width: 22px; height: 22px; }
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 99;
  background: #fff;
  border-top: 1px solid var(--border-color);
  padding: 10px 16px;
  box-shadow: 0 -4px 20px rgba(30,60,120,0.08);
}

/* ============ 响应式 ============ */
@media (max-width: 991.98px) {
  .nav-toggle { display: inline-flex; }
  .header-tools .search-wrap { display: none; }
  .header-tools { gap: 10px; }
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 12px 24px rgba(30,60,120,0.08);
    padding: 16px 24px 24px;
    display: none;
    z-index: 99;
  }
  .main-nav.open { display: block; }
  .nav-list { flex-direction: column; gap: 4px; }
  .nav-link { display: block; padding: 12px 16px; border-radius: 8px; }
  .nav-link.active { background: var(--primary-light); }
  .nav-link.active::after { display: none; }
  .hero-title { font-size: 34px; }
  .hero-visual { margin-top: 24px; }
  .hero-float-card { bottom: -16px; }
}
@media (max-width: 767.98px) {
  :root { --space-lg: 56px; }
  h1 { font-size: 28px; }
  h2 { font-size: 24px; }
  .section-head { margin-bottom: 32px; }
  .hero-section { padding: 64px 0 72px; }
  .hero-title { font-size: 30px; }
  .hero-desc { font-size: 15px; }
  .btn-lg { padding: 11px 24px; font-size: 15px; }
  .stat-number { font-size: 28px; }
  .stat-label { font-size: 13px; }
  .feature-card { padding: 24px 20px; }
  .proof-quote-card, .metric-card { padding: 24px 20px; }
  .price-body { padding: 26px 20px; }
  .cta-box { padding: 30px 20px; }
  .cta-box h3 { font-size: 22px; }
  .faq-question { font-size: 15px; padding: 16px 14px; }
  .faq-answer-inner { padding: 0 14px 18px; font-size: 14px; }
  .float-cta { display: none; }
  .mobile-cta-bar { display: block; }
  body { padding-bottom: 68px; }
  .header-cta { display: none; }
}
@media (max-width: 575.98px) {
  .brand-text { font-size: 17px; }
  .header-row { gap: 12px; min-height: 64px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .hero-float-card { left: 10px; bottom: 10px; padding: 10px 16px; }
  .hero-float-card .float-num { font-size: 18px; }
  .badge-row { gap: 8px; }
  .honor-badge { font-size: 12px; padding: 6px 14px; }
}

/* roulang page: article */
:root {
  --c-primary: #2E7CF6;
  --c-primary-hover: #2A6FE2;
  --c-primary-active: #2665D0;
  --c-primary-soft: #E8F1FE;
  --c-gold: #F6B73C;
  --c-gold-hover: #E8A62E;
  --c-bg: #F7FAFC;
  --c-white: #FFFFFF;
  --c-navy: #1B2A44;
  --c-navy-2: #2E4A7C;
  --c-text: #1D2B45;
  --c-text-2: #5C6C85;
  --c-text-3: #9AAABF;
  --c-border: #E3EAF2;
  --shadow-sm: 0 2px 12px rgba(30,60,120,0.04);
  --shadow-md: 0 4px 24px rgba(30,60,120,0.08);
  --shadow-lg: 0 12px 36px rgba(30,60,120,0.14);
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --space-section: 88px;
  --space-section-mobile: 56px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-text);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; }
a { color: var(--c-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--c-primary-hover); }
button, input { font-family: inherit; }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
.main {
  background: var(--c-white);
}

/* ---------- 按钮 ---------- */
.btn { border-radius: 10px; font-weight: 500; padding: 10px 24px; transition: background .2s, border-color .2s, box-shadow .2s, transform .2s; }
.btn-lg { padding: 14px 32px; border-radius: 12px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-primary { background: var(--c-primary); border: 1px solid var(--c-primary); color: #fff; }
.btn-primary:hover { background: var(--c-primary-hover); border-color: var(--c-primary-hover); color: #fff; }
.btn-primary:active { background: var(--c-primary-active); border-color: var(--c-primary-active); color: #fff; }
.btn-primary:focus-visible { outline: 2px solid rgba(46,124,246,.4); outline-offset: 2px; }
.btn-outline-primary { background: transparent; border: 1px solid var(--c-primary); color: var(--c-primary); }
.btn-outline-primary:hover { background: rgba(46,124,246,.08); border-color: var(--c-primary); color: var(--c-primary); }
.btn-outline-light { background: transparent; border: 1px solid rgba(255,255,255,.7); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,.12); border-color: #fff; color: #fff; }
.btn-gold { background: var(--c-gold); border: 1px solid var(--c-gold); color: var(--c-navy); }
.btn-gold:hover { background: var(--c-gold-hover); border-color: var(--c-gold-hover); color: var(--c-navy); }
.btn-gold:active { background: #D99A25; border-color: #D99A25; color: var(--c-navy); }

/* ---------- 页头导航 ---------- */
.site-header {
  background: var(--c-white);
  border-bottom: 1px solid var(--c-border);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}
.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--c-navy);
  font-size: 20px;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: -.01em;
  white-space: nowrap;
}
.brand:hover { color: var(--c-navy); }
.brand-star { color: var(--c-primary); flex: 0 0 auto; }
.brand-text { line-height: 1.2; }
.main-nav { display: flex; align-items: center; }
.nav-list { display: flex; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-link {
  display: inline-block;
  padding: 8px 16px;
  color: var(--c-text-2);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
  position: relative;
  transition: color .2s, background .2s;
}
.nav-link:hover { color: var(--c-primary); background: var(--c-primary-soft); }
.nav-link.active { color: var(--c-primary); font-weight: 600; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  background: var(--c-primary);
  border-radius: 2px;
}
.header-tools { display: flex; align-items: center; gap: 14px; }
.search-wrap {
  display: flex;
  align-items: center;
  width: 220px;
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: 10px;
  padding: 8px 14px;
  transition: border-color .2s, box-shadow .2s;
}
.search-wrap:focus-within {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(46,124,246,.15);
}
.search-icon { color: var(--c-text-3); flex: 0 0 auto; }
.search-input {
  border: 0;
  outline: none;
  background: transparent;
  width: 100%;
  padding-left: 8px;
  font-size: 14px;
  color: var(--c-text);
}
.search-input::placeholder { color: var(--c-text-3); }
.header-cta { white-space: nowrap; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: var(--c-primary-soft);
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.nav-toggle span { display: block; width: 20px; height: 2px; background: var(--c-primary); border-radius: 2px; transition: transform .2s; }
.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); }

/* ---------- 面包屑 ---------- */
.breadcrumb-wrap {
  background: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
  padding: 14px 0;
}
.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: var(--c-text-3);
}
.breadcrumb-list li { display: flex; align-items: center; gap: 8px; }
.breadcrumb-list li + li::before { content: "/"; color: #C7D3E0; }
.breadcrumb-list a { color: var(--c-text-3); text-decoration: none; transition: color .2s; }
.breadcrumb-list a:hover { color: var(--c-primary); }
.breadcrumb-list .current { color: var(--c-primary); max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- 文章头部 ---------- */
.article-hero {
  background: var(--c-bg);
  padding: 48px 0 32px;
  border-bottom: 1px solid var(--c-border);
}
.article-hero-inner { max-width: 860px; margin: 0 auto; text-align: center; }
.article-cate {
  display: inline-flex;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: var(--c-primary-soft);
  color: var(--c-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 18px;
}
.article-hero h1 {
  font-size: 30px;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.35;
  margin: 0 0 18px;
}
.article-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 13px;
  color: var(--c-text-3);
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.not-found-wrap { text-align: center; padding: 80px 0 100px; }
.not-found-wrap h1 { font-size: 34px; color: var(--c-text); margin-bottom: 12px; }
.not-found-tip { color: var(--c-text-2); font-size: 15px; margin-bottom: 28px; }

/* ---------- 文章正文 ---------- */
.article-main { background: var(--c-white); padding: 56px 0 72px; }
.article-content { max-width: 860px; margin: 0 auto; }
.article-content p { font-size: 16px; line-height: 1.9; color: var(--c-text); margin-bottom: 1.2em; }
.article-content h2 { font-size: 26px; font-weight: 700; color: var(--c-navy); margin: 2em 0 .8em; line-height: 1.4; }
.article-content h3 { font-size: 22px; font-weight: 600; color: var(--c-navy); margin: 1.8em 0 .6em; line-height: 1.4; }
.article-content ul, .article-content ol { margin: 1rem 0 1.2rem 1.4rem; padding-left: .5rem; }
.article-content li { margin-bottom: .45em; font-size: 15.5px; line-height: 1.8; color: var(--c-text); }
.article-content img { border-radius: var(--radius); display: block; margin: 1.5rem auto; width: auto; max-width: 100%; }
.article-content blockquote {
  border-left: 4px solid var(--c-primary);
  background: var(--c-primary-soft);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-radius: 0 10px 10px 0;
  color: var(--c-text);
  font-size: 15px;
}
.article-content blockquote p { margin-bottom: 0; }
.article-content code {
  color: var(--c-primary);
  background: var(--c-primary-soft);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 14px;
}
.article-content a { text-decoration: underline; text-underline-offset: 3px; }
.article-content table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; }
.article-content th, .article-content td { border: 1px solid var(--c-border); padding: 10px 14px; font-size: 14px; }
.article-content th { background: var(--c-bg); font-weight: 600; }

/* ---------- 文章标签 ---------- */
.article-tags {
  max-width: 860px;
  margin: 36px auto 0;
  text-align: center;
  padding-top: 28px;
  border-top: 1px solid var(--c-border);
}
.tag {
  display: inline-block;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: var(--c-primary-soft);
  color: var(--c-primary);
  font-size: 13px;
  font-weight: 500;
  margin: 6px 6px 0;
  transition: background .2s, color .2s;
}
.tag:hover { background: var(--c-primary); color: #fff; }

/* ---------- 相关推荐 ---------- */
.related-section { padding: var(--space-section) 0; background: var(--c-bg); }
.section-head { text-align: center; margin-bottom: 44px; }
.eyebrow { font-size: 13px; font-weight: 500; letter-spacing: .06em; color: var(--c-primary); text-transform: uppercase; }
.section-head h2 { font-size: 30px; font-weight: 700; color: var(--c-text); margin-top: 10px; margin-bottom: 0; }
.related-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--c-white);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow-md);
  transition: transform .25s, box-shadow .25s, border-color .25s;
  text-decoration: none;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(46,124,246,.3); }
.related-thumb { display: block; border-radius: 10px; overflow: hidden; aspect-ratio: 16/9; background: var(--c-primary-soft); margin-bottom: 14px; position: relative; }
.related-thumb img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.related-date { font-size: 12px; color: var(--c-text-3); margin-bottom: 8px; }
.related-title { font-size: 16px; font-weight: 600; color: var(--c-text); line-height: 1.55; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.back-link { text-align: center; margin-top: 44px; }
.back-link a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  color: var(--c-text-2);
  font-weight: 500;
  text-decoration: none;
  transition: color .2s;
}
.back-link a:hover { color: var(--c-primary); }

/* ---------- CTA 区块 ---------- */
.cta-section { padding: var(--space-section) 0; background: var(--c-white); }
.cta-box {
  background:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.14) 1px, transparent 1px),
    radial-gradient(circle at 74% 28%, rgba(255,255,255,0.12) 1.5px, transparent 1.5px),
    radial-gradient(circle at 40% 75%, rgba(255,255,255,0.10) 1px, transparent 1px),
    linear-gradient(135deg, rgba(27,42,68,.92), rgba(46,74,124,.94)),
    url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  background-size: 90px 90px, 140px 140px, 120px 120px, 100% 100%, cover;
  border-radius: 24px;
  padding: 76px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-box .eyebrow { color: var(--c-gold); }
.cta-box h2 { color: #fff; font-size: 30px; font-weight: 700; margin: 12px 0 16px; }
.cta-box p { color: rgba(255,255,255,.72); font-size: 15px; max-width: 560px; margin: 0 auto 32px; }
.cta-box .btn-gold { box-shadow: 0 8px 24px rgba(246,183,60,.3); }

/* ---------- 页脚 ---------- */
.site-footer {
  background: var(--c-navy);
  color: rgba(255,255,255,.75);
  padding: 72px 0 0;
}
.footer-brand {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}
.footer-brand svg { color: var(--c-gold); }
.footer-desc { color: rgba(255,255,255,.58); font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-title { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: rgba(255,255,255,.62); text-decoration: none; font-size: 14px; transition: color .2s; }
.footer-links a:hover { color: #7AABF8; }
.footer-contact { list-style: none; padding: 0; margin: 0; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; color: rgba(255,255,255,.68); font-size: 14px; margin-bottom: 14px; }
.footer-contact svg { flex: 0 0 auto; margin-top: 4px; color: var(--c-gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  margin-top: 56px;
  padding: 24px 0;
  text-align: center;
  color: rgba(255,255,255,.42);
  font-size: 13px;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1199px) {
  .search-wrap { width: 180px; }
}
@media (max-width: 991px) {
  .header-tools .search-wrap { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-row { position: relative; }
  .main-nav {
    position: absolute;
    top: 100%;
    left: -24px;
    right: -24px;
    background: var(--c-white);
    border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow-md);
    padding: 16px 24px;
    display: none;
    flex-direction: column;
  }
  .main-nav.open { display: flex; }
  .nav-list { flex-direction: column; width: 100%; gap: 2px; }
  .nav-link { display: block; padding: 12px 16px; }
  .nav-link.active::after { display: none; }
  .nav-link.active { background: var(--c-primary-soft); border-radius: 10px; }
  .container { padding-left: 20px; padding-right: 20px; max-width: 100%; }
  .article-hero { padding: 36px 0 24px; }
  .article-hero h1 { font-size: 26px; }
  .cta-box { padding: 56px 24px; }
  .cta-box h2 { font-size: 26px; }
}
@media (max-width: 767px) {
  :root { --space-section: 56px; }
  .header-row { min-height: 64px; }
  .brand-text { font-size: 17px; }
  .header-cta { padding: 7px 14px; font-size: 13px; }
  .article-hero h1 { font-size: 24px; }
  .article-meta { gap: 12px; font-size: 12px; flex-direction: row; justify-content: center; }
  .article-main { padding: 40px 0 56px; }
  .article-content p { font-size: 15px; line-height: 1.85; }
  .article-content h2 { font-size: 23px; }
  .article-content h3 { font-size: 20px; }
  .section-head h2 { font-size: 26px; }
  .related-title { font-size: 15px; }
  .cta-box { border-radius: 18px; }
  .cta-box h2 { font-size: 23px; }
  .footer-bottom { margin-top: 40px; }
}

/* roulang page: category1 */
:root {
            --primary: #2E7CF6;
            --primary-light: #E8F1FE;
            --accent: #F6B73C;
            --accent-dark: #e4a52b;
            --page-bg: #F7FAFC;
            --card-bg: #ffffff;
            --dark-1: #1B2A44;
            --dark-2: #2E4A7C;
            --text: #1D2B45;
            --text-secondary: #5C6C85;
            --text-muted: #9AAABF;
            --border: #E3EAF2;
            --radius: 14px;
            --radius-sm: 10px;
            --shadow: 0 4px 24px rgba(30, 60, 120, 0.08);
            --shadow-hover: 0 12px 36px rgba(30, 60, 120, 0.14);
            --transition: all .3s ease;
            --font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background: var(--page-bg);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        button,
        input {
            font-family: inherit;
        }
        .container {
            max-width: 1200px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: #fff;
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 12px rgba(30, 60, 120, 0.04);
        }
        .header-row {
            display: flex;
            align-items: center;
            gap: 28px;
            min-height: 72px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-star {
            color: var(--primary);
        }
        .brand-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark-1);
            letter-spacing: .01em;
            white-space: nowrap;
        }
        .main-nav {
            margin-left: auto;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-link {
            position: relative;
            display: inline-block;
            padding: 10px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-tools {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-left: 8px;
        }
        .search-wrap {
            position: relative;
            display: flex;
            align-items: center;
        }
        .search-icon {
            position: absolute;
            left: 12px;
            color: var(--text-muted);
            pointer-events: none;
        }
        .search-input {
            width: 220px;
            height: 38px;
            padding: 0 14px 0 36px;
            font-size: 14px;
            color: var(--text);
            background: var(--page-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .search-input::placeholder {
            color: var(--text-muted);
        }
        .search-input:focus {
            background: #fff;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(46, 124, 246, 0.15);
            outline: none;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 26px;
            font-size: 15px;
            font-weight: 500;
            line-height: 1.5;
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            cursor: pointer;
            text-decoration: none;
            transition: var(--transition);
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: #3a86ff;
            border-color: #3a86ff;
            color: #fff;
        }
        .btn-primary:active {
            background: #1f6be0;
            border-color: #1f6be0;
        }
        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--text);
        }
        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: var(--text);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .header-cta {
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            padding: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: var(--transition);
        }
        .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);
        }

        /* ===== Page Hero ===== */
        .page-hero {
            padding: 56px 0 48px;
            background: linear-gradient(120deg, rgba(232, 241, 254, 0.97) 0%, rgba(235, 243, 254, 0.90) 60%, rgba(240, 246, 255, 0.78) 100%), url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .breadcrumb-nav a {
            color: var(--text-muted);
        }
        .breadcrumb-nav a:hover {
            color: var(--primary);
        }
        .breadcrumb-nav .sep {
            color: var(--border);
        }
        .breadcrumb-nav .current {
            color: var(--primary);
            font-weight: 500;
        }
        .page-hero h1 {
            font-size: 30px;
            font-weight: 700;
            color: var(--dark-1);
            margin: 0 0 12px;
            letter-spacing: .02em;
        }
        .page-hero .lead {
            max-width: 560px;
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.8;
        }
        .hero-visual {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.10);
            padding: 10px;
            overflow: hidden;
            transition: var(--transition);
        }
        .hero-visual:hover {
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.14);
        }
        .hero-visual img {
            width: 100%;
            height: 190px;
            object-fit: cover;
            border-radius: 8px;
            display: block;
        }

        /* ===== Category Main ===== */
        .category-main {
            padding: 48px 0 72px;
        }
        .post-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .post-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .post-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .post-meta-top {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 10px;
        }
        .post-cat {
            display: inline-block;
            padding: 3px 12px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 999px;
        }
        .post-date {
            font-size: 13px;
            color: var(--text-muted);
        }
        .post-title {
            margin: 0 0 10px;
            font-size: 20px;
            line-height: 1.45;
        }
        .post-title a {
            color: var(--text);
        }
        .post-title a:hover {
            color: var(--primary);
        }
        .post-summary {
            margin: 0 0 16px;
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-secondary);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .post-meta-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: var(--text-muted);
        }
        .read-more {
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
        }
        .read-more:hover {
            color: #1f6be0;
            text-decoration: underline;
        }

        /* ===== Sidebar ===== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
        }
        .sidebar-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--dark-1);
            margin-bottom: 16px;
            position: relative;
            padding-left: 14px;
        }
        .sidebar-title::before {
            content: "";
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 18px;
            border-radius: 4px;
            background: var(--primary);
        }
        .cat-nav li+li {
            border-top: 1px solid var(--border);
        }
        .cat-nav a {
            display: block;
            padding: 10px 12px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
        }
        .cat-nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .cat-nav a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .tag {
            display: inline-block;
            padding: 4px 14px;
            font-size: 13px;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 999px;
            transition: var(--transition);
        }
        .tag:hover {
            background: var(--primary);
            color: #fff;
        }
        .cta-card {
            background: linear-gradient(135deg, var(--primary-light), #f0f6ff);
            text-align: center;
        }
        .cta-card img {
            width: 100%;
            height: 130px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 16px;
        }
        .cta-card h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--dark-1);
            margin: 0 0 8px;
        }
        .cta-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 16px;
        }
        .cta-card .btn {
            width: 100%;
        }

        /* ===== CTA Section ===== */
        .section-cta {
            padding: 56px 0;
            background: #fff;
            border-top: 1px solid var(--border);
        }
        .cta-box {
            background: linear-gradient(120deg, var(--primary) 0%, #4a90f7 100%);
            border-radius: var(--radius);
            padding: 40px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            box-shadow: 0 12px 36px rgba(46, 124, 246, 0.25);
        }
        .cta-box h3 {
            margin: 0 0 6px;
            font-size: 22px;
            font-weight: 700;
        }
        .cta-box p {
            margin: 0;
            font-size: 14px;
            opacity: 0.85;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark-1);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 0;
        }
        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand svg {
            color: var(--accent);
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 340px;
            margin-bottom: 0;
        }
        .footer-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-links li+li,
        .footer-contact li+li {
            margin-top: 10px;
        }
        .footer-links a,
        .footer-contact li {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            line-height: 1.6;
        }
        .footer-links a:hover {
            color: #7AABF8;
        }
        .footer-contact svg {
            color: var(--accent);
            flex-shrink: 0;
        }
        .footer-bottom {
            margin-top: 48px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== Floating CTA ===== */
        .float-cta {
            position: fixed;
            right: 20px;
            bottom: 40px;
            z-index: 990;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(246, 183, 60, 0.35);
            transition: var(--transition);
        }
        .float-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 28px rgba(246, 183, 60, 0.45);
        }
        .cta-mobile-text {
            display: none;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 16px 32px rgba(30, 60, 120, 0.1);
            }
            .main-nav.show {
                display: block;
            }
            .nav-list {
                flex-direction: column;
                align-items: stretch;
                padding: 12px 24px 20px;
            }
            .nav-link {
                display: block;
                padding: 12px 4px;
                border-bottom: 1px solid var(--border);
                border-radius: 0;
            }
            .nav-link.active::after {
                display: none;
            }
            .search-wrap {
                display: none;
            }
            .header-row {
                gap: 12px;
            }
            .header-cta {
                padding: 8px 16px;
                font-size: 14px;
            }
        }
        @media (max-width: 767px) {
            .page-hero {
                padding: 36px 0 32px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .hero-visual img {
                height: 150px;
            }
            .post-item {
                padding: 20px;
            }
            .post-title {
                font-size: 18px;
            }
            .cta-box {
                padding: 28px 20px;
                text-align: center;
                justify-content: center;
            }
            .cta-box .btn {
                width: 100%;
                max-width: 240px;
            }
            .float-cta {
                left: 0;
                right: 0;
                bottom: 0;
                width: auto;
                height: auto;
                border-radius: 0;
                background: #fff;
                box-shadow: 0 -1px 10px rgba(30, 60, 120, 0.08);
                padding: 10px 16px;
            }
            .float-cta svg {
                display: none;
            }
            .float-cta .cta-mobile-text {
                display: block;
                width: 100%;
                text-align: center;
                padding: 12px;
                background: var(--accent);
                color: var(--text);
                border-radius: var(--radius-sm);
                font-weight: 600;
            }
            .site-footer {
                padding-top: 48px;
            }
        }

/* roulang page: category3 */
/* ========== Design Variables ========== */
:root {
  --primary: #2E7CF6;
  --primary-light: #E8F1FE;
  --accent: #F6B73C;
  --bg: #F7FAFC;
  --dark: #1B2A44;
  --dark-2: #2E4A7C;
  --text: #1D2B45;
  --text-2: #5C6C85;
  --text-3: #9AAABF;
  --border: #E3EAF2;
  --radius: 14px;
  --radius-btn: 10px;
  --shadow: 0 4px 24px rgba(30, 60, 120, 0.08);
  --shadow-hover: 0 12px 36px rgba(30, 60, 120, 0.14);
  --transition: all .3s ease;
}

/* ========== Base Reset ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }
.container { max-width: 1200px; }
h1, h2, h3, h4 { line-height: 1.35; color: var(--text); font-weight: 700; }
p { margin-bottom: 1rem; }
ul { list-style: none; margin: 0; padding: 0; }

/* ========== Typography Helpers ========== */
.eyebrow {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: inline-block;
}
.section-title { font-size: 30px; font-weight: 700; margin-bottom: 12px; }
.section-desc { font-size: 16px; color: var(--text-2); max-width: 640px; margin-bottom: 0; }

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 500;
  border: 1px solid transparent;
  transition: var(--transition);
  cursor: pointer;
  line-height: 1.5;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: #1E6AE8; color: #fff; transform: translateY(-1px); }
.btn-primary:active { background: #1B5FD0; }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: rgba(46, 124, 246, 0.1); color: var(--primary); }
.btn-accent { background: var(--accent); color: #1D2B45; border-color: var(--accent); }
.btn-accent:hover { background: #E8A926; color: #1D2B45; }
.btn-sm { padding: 8px 18px; font-size: 14px; }

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(30, 60, 120, 0.04);
}
.header-row { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 1.5rem; }
.brand { display: flex; align-items: center; gap: 8px; color: var(--dark); font-size: 1.23rem; font-weight: 700; white-space: nowrap; }
.brand:hover { color: var(--dark); }
.brand-star { color: var(--primary); flex-shrink: 0; }
.brand-text { letter-spacing: 0.01em; }
.main-nav .nav-list { display: flex; gap: 2.1rem; }
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  padding: 10px 0;
  position: relative;
  white-space: nowrap;
}
.nav-link:hover { color: var(--primary); }
.nav-link.active { color: var(--primary); }
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}
.header-tools { display: flex; align-items: center; gap: 1.2rem; }
.search-wrap { position: relative; width: 220px; }
.search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  pointer-events: none;
}
.search-input {
  width: 100%;
  height: 40px;
  padding: 0 14px 0 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  font-size: 14px;
  background: #F7FAFC;
  transition: var(--transition);
}
.search-input::placeholder { color: var(--text-3); }
.search-input:focus {
  outline: none;
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.15);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fff;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span { display: block; height: 2px; background: var(--text); border-radius: 2px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== Page Hero (Category Banner) ========== */
.cat-hero {
  background: var(--primary-light);
  padding: 56px 0 58px;
  position: relative;
  overflow: hidden;
}
.cat-hero .container { position: relative; z-index: 2; }
.breadcrumb-nav { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--text-3); margin-bottom: 18px; }
.breadcrumb-nav a { color: var(--text-3); font-weight: 400; }
.breadcrumb-nav a:hover { color: var(--primary); }
.breadcrumb-nav .sep { color: #c3d0e0; }
.breadcrumb-nav .current { color: var(--primary); font-weight: 600; }
.cat-hero h1 { font-size: 40px; font-weight: 700; margin-bottom: 14px; }
.cat-hero .cat-lead { font-size: 17px; color: var(--text-2); max-width: 680px; margin-bottom: 28px; }
.cat-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cat-hero-deco {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  width: 320px;
  height: 260px;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: #fff;
  display: block;
  z-index: 1;
}
.cat-hero-deco img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 991px) { .cat-hero-deco { display: none; } }

/* ========== Stats Bar ========== */
.stats-section { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 44px 0; }
.stat-item { text-align: center; padding: 8px 10px; }
.stat-item .stat-num { font-size: 38px; font-weight: 800; color: var(--primary); line-height: 1.2; }
.stat-item .stat-label { font-size: 14px; color: var(--text-2); margin-top: 6px; }

/* ========== Section Layout ========== */
.section-block { padding: 88px 0; }
.section-block.bg-white { background: #fff; }
.section-block.bg-alt { background: rgba(232, 241, 254, 0.55); }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head .section-desc { margin: 0 auto; }

/* ========== Case Cards ========== */
.case-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.case-card-img { height: 190px; background: var(--primary-light); overflow: hidden; position: relative; }
.case-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.case-card:hover .case-card-img img { transform: scale(1.04); }
.case-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
}
.case-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.case-card-body h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.case-card-body p { font-size: 14px; color: var(--text-2); flex: 1; margin-bottom: 16px; }
.case-card-more { font-size: 14px; color: var(--primary); font-weight: 500; display: inline-flex; align-items: center; gap: 6px; }
.case-card-more:hover { color: #1B5FD0; }
.case-card-more .arrow { transition: transform .2s ease; }
.case-card-more:hover .arrow { transform: translateX(4px); }

/* ========== Mode Cards ========== */
.mode-card {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 34px 28px;
  height: 100%;
  text-align: left;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.mode-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary);
  opacity: .8;
}
.mode-card:nth-child(2)::before { background: var(--accent); }
.mode-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.mode-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}
.mode-card h3 { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
.mode-card p { font-size: 14px; color: var(--text-2); margin-bottom: 0; }

/* ========== Process Steps ========== */
.process-section .process-list { display: flex; gap: 24px; flex-wrap: wrap; justify-content: center; margin-top: 20px; }
.process-item {
  flex: 1;
  min-width: 220px;
  max-width: 260px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 30px 24px;
  position: relative;
  text-align: left;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.process-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.process-num {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.process-item h4 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.process-item p { font-size: 14px; color: var(--text-2); margin-bottom: 0; }

/* ========== Testimonials ========== */
.tcard {
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 34px 30px;
  height: 100%;
  position: relative;
}
.tcard .quote-mark {
  width: 30px;
  height: 30px;
  color: var(--primary-light);
  margin-bottom: 14px;
  fill: var(--primary);
  opacity: .35;
}
.tcard p { font-size: 15px; color: var(--text); margin-bottom: 20px; }
.tcard-author { display: flex; align-items: center; gap: 12px; }
.tcard-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.tcard-author-info .name { font-weight: 600; font-size: 15px; color: var(--text); }
.tcard-author-info .role { font-size: 13px; color: var(--text-3); }

/* ========== Badges Row ========== */
.badge-row { display: flex; gap: 14px; flex-wrap: wrap; justify-content: center; margin-top: 40px; }
.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 24px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}
.badge-pill .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }

/* ========== FAQ ========== */
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: transparent;
  border: none;
  padding: 22px 20px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  text-align: left;
  border-radius: 0;
  transition: var(--transition);
}
.faq-q:hover { background: #F0F5FD; }
.faq-q .icon { font-size: 20px; color: var(--primary); flex-shrink: 0; transition: transform .3s ease; }
.faq-item.open .faq-q .icon { transform: rotate(45deg); }
.faq-item.open { border-left: 4px solid var(--primary); }
.faq-item.open .faq-q { color: var(--primary); }
.faq-a { display: none; padding: 0 20px 24px; font-size: 14px; line-height: 1.8; color: var(--text-2); }
.faq-item.open .faq-a { display: block; }

/* ========== CTA Section ========== */
.cta-section {
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
  padding: 70px 0;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='%23ffffff' opacity='0.12'%3E%3Ccircle cx='4' cy='6' r='1.4'/%3E%3Ccircle cx='18' cy='16' r='1.2'/%3E%3Ccircle cx='12' cy='4' r='1'/%3E%3Ccircle cx='7' cy='19' r='1'/%3E%3Ccircle cx='20' cy='21' r='1.1'/%3E%3Ccircle cx='2' cy='14' r='0.8'/%3E%3C/svg%3E");
  pointer-events: none;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-title { color: #fff; font-size: 30px; font-weight: 700; margin-bottom: 10px; text-align: center; }
.cta-sub { color: rgba(255, 255, 255, 0.7); text-align: center; font-size: 16px; max-width: 560px; margin: 0 auto 40px; }
.cta-form-wrap {
  max-width: 640px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 34px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
}
.cta-form-wrap .form-label { font-weight: 500; color: var(--text); margin-bottom: 6px; }
.form-control-custom {
  width: 100%;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: var(--radius-btn);
  padding: 0 14px;
  font-size: 14px;
  background: #F7FAFC;
  transition: var(--transition);
  margin-bottom: 16px;
}
.form-control-custom:focus { outline: none; border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(46, 124, 246, 0.15); }
.form-submit { width: 100%; margin-top: 4px; }

/* ========== Footer ========== */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.75); padding: 60px 0 0; }
.site-footer .footer-brand { display: flex; align-items: center; gap: 8px; font-size: 1.2rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.site-footer .footer-brand svg { color: var(--primary); }
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.6); margin-bottom: 0; }
.footer-title { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 16px; }
.footer-links li { margin-bottom: 9px; }
.footer-links a { color: rgba(255, 255, 255, 0.6); font-size: 14px; }
.footer-links a:hover { color: #7AABF8; }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 12px;
}
.footer-contact svg { flex-shrink: 0; margin-top: 4px; color: rgba(255, 255, 255, 0.45); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0 22px;
  text-align: center;
  margin-top: 46px;
}
.footer-bottom p { margin: 0; font-size: 13px; color: rgba(255, 255, 255, 0.5); }

/* ========== Floating CTA ========== */
.float-cta {
  position: fixed;
  right: 20px;
  bottom: 40px;
  width: 52px;
  height: 52px;
  background: var(--accent);
  border-radius: 50%;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(246, 183, 60, 0.35);
  z-index: 999;
  transition: var(--transition);
}
.float-cta:hover { transform: translateY(-3px); background: #E8A926; }

/* ========== Responsive ========== */
@media (max-width: 991px) {
  .search-wrap { display: none; }
  .nav-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 24px rgba(30, 60, 120, 0.08);
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
  }
  .main-nav.open { max-height: 400px; }
  .main-nav .nav-list { flex-direction: column; padding: 16px 24px; gap: 4px; }
  .nav-link { display: block; padding: 12px 0; border-bottom: 1px solid rgba(227, 234, 242, 0.6); }
  .nav-link.active::after { display: none; }
  .nav-link.active { background: var(--primary-light); color: var(--primary); padding-left: 12px; border-radius: 8px; }
  .cat-hero { padding: 44px 0 48px; }
  .cat-hero h1 { font-size: 32px; }
  .section-block { padding: 64px 0; }
  .section-title { font-size: 24px; }
  .stat-item .stat-num { font-size: 28px; }
  .process-item { min-width: 200px; }
}

@media (max-width: 767px) {
  .header-row { height: 64px; gap: 1rem; }
  .brand-text { font-size: 1.05rem; }
  .header-cta { padding: 8px 14px; font-size: 13px; }
  .cat-hero h1 { font-size: 27px; }
  .cat-hero .cat-lead { font-size: 15px; }
  .section-title { font-size: 22px; }
  .cta-title { font-size: 24px; }
  .cta-form-wrap { padding: 28px 20px; }
  .float-cta {
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    height: 54px;
    border-radius: 0;
    box-shadow: 0 -2px 12px rgba(30, 60, 120, 0.12);
  }
  .float-cta svg { display: none; }
  .float-cta::before { content: '开始咨询'; font-size: 15px; font-weight: 600; color: #1D2B45; }
  .footer-bottom p { font-size: 12px; }
}

/* roulang page: category2 */
:root {
  --primary: #2E7CF6;
  --primary-light: #E8F1FE;
  --primary-lighter: rgba(46,124,246,.10);
  --gold: #F6B73C;
  --gold-dark: #e0a52a;
  --bg-body: #F7FAFC;
  --dark-1: #1B2A44;
  --dark-2: #2E4A7C;
  --text-1: #1D2B45;
  --text-2: #5C6C85;
  --text-3: #9AAABF;
  --border: #E3EAF2;
  --radius-card: 14px;
  --radius-btn: 10px;
  --shadow-card: 0 4px 24px rgba(30,60,120,.08);
  --shadow-hover: 0 12px 36px rgba(30,60,120,.14);
  --font-stack: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-stack);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-1);
  background: var(--bg-body);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: #1b64d8; }
button, input { font: inherit; }
.container { max-width: 1200px; }

/* ===== Header ===== */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: #fff;
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(30,60,120,.04);
}
.header-row {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; min-height: 76px;
}
.brand {
  display: inline-flex; align-items: center; gap: .6rem;
  color: var(--text-1); font-size: 1.35rem; font-weight: 700;
  letter-spacing: .01em; white-space: nowrap;
}
.brand:hover { color: var(--text-1); }
.brand-star { color: var(--primary); flex: none; }
.nav-list { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; }
.nav-link {
  display: block; padding: .5rem .95rem; color: var(--text-2);
  font-size: .95rem; font-weight: 500; position: relative;
}
.nav-link::after {
  content: ""; position: absolute; left: .95rem; right: .95rem; bottom: 0;
  height: 2px; background: var(--primary); border-radius: 2px;
  opacity: 0; transform: scaleX(.6); transition: all .25s ease;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { opacity: 1; transform: scaleX(1); }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { opacity: 1; transform: scaleX(1); }
.header-tools { display: flex; align-items: center; gap: .75rem; }
.search-wrap {
  display: flex; align-items: center; gap: .5rem;
  background: #f2f6fb; border: 1px solid var(--border);
  border-radius: 999px; padding: 0 .9rem; height: 40px; width: 220px;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.search-wrap:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46,124,246,.15);
  background: #fff;
}
.search-icon { color: var(--text-3); flex: none; }
.search-input { border: 0; background: transparent; outline: 0; padding: 0 .4rem; width: 100%; color: var(--text-1); }
.search-input::placeholder { color: var(--text-3); }
.header-cta { flex: none; }
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: 0; padding: 8px; cursor: pointer;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: var(--text-1); border-radius: 2px; transition: all .25s ease;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  border-radius: var(--radius-btn); padding: .62rem 1.4rem;
  font-size: 1rem; font-weight: 500; border: 1px solid transparent;
  transition: all .2s ease; cursor: pointer; line-height: 1.5;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover {
  background: #1d69e8; border-color: #1d69e8; color: #fff;
  transform: translateY(-2px); box-shadow: 0 8px 20px rgba(46,124,246,.25);
}
.btn-primary:active { filter: brightness(.92); transform: translateY(0); }
.btn-outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline:hover { background: rgba(46,124,246,.10); color: var(--primary); transform: translateY(-2px); }
.btn-outline:active { transform: translateY(0); }
.btn-gold { background: var(--gold); color: var(--text-1); border-color: var(--gold); font-weight: 600; }
.btn-gold:hover {
  background: var(--gold-dark); color: var(--text-1);
  transform: translateY(-2px); box-shadow: 0 10px 26px rgba(246,183,60,.35);
}
.btn-gold:active { transform: translateY(0); filter: brightness(.95); }
.btn-sm { padding: .4rem 1rem; font-size: .9rem; }

/* ===== Hero ===== */
.guide-hero {
  position: relative;
  background: linear-gradient(135deg, #E8F1FE 0%, #f2f7fe 60%, #fff 100%);
  border-bottom: 1px solid var(--border);
  padding: 72px 0 76px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background-image: url("/assets/images/backpic/back-1.webp");
  background-size: cover; background-position: center;
  opacity: .08;
}
.star-dots { position: absolute; inset: 0; pointer-events: none; }
.star-dots span { position: absolute; display: block; border-radius: 50%; background: var(--primary); opacity: .28; }
.hero-inner { position: relative; z-index: 2; }
.hero-breadcrumb { font-size: .875rem; color: var(--text-3); margin-bottom: .5rem; }
.hero-breadcrumb a { color: var(--text-3); }
.hero-breadcrumb a:hover { color: var(--primary); }
.hero-breadcrumb .sep { margin: 0 .4rem; color: var(--text-3); }
.eyebrow {
  display: inline-block; font-size: 13px; font-weight: 500; letter-spacing: .06em;
  color: var(--primary); background: rgba(46,124,246,.08);
  border: 1px solid rgba(46,124,246,.15);
  padding: .2rem .75rem; border-radius: 999px; margin-bottom: .75rem;
}
.page-title {
  font-size: 40px; font-weight: 700; color: var(--text-1);
  line-height: 1.25; margin: .25rem 0 .75rem;
}
.hero-subtitle { font-size: 1.05rem; color: var(--text-2); max-width: 540px; margin-bottom: 0; }
.hero-actions { display: flex; gap: .8rem; margin-top: 1.6rem; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-card {
  background: #fff; border-radius: var(--radius-card); padding: 10px;
  box-shadow: 0 12px 40px rgba(30,60,120,.22);
}
.hero-card img {
  border-radius: 8px; width: 100%; aspect-ratio: 4/3; object-fit: cover;
}

/* ===== Stats ===== */
.stats-band {
  background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.stat-item { text-align: center; padding: .5rem 1rem; }
.stat-num { font-size: 2rem; font-weight: 700; color: var(--primary); line-height: 1.2; }
.stat-label { font-size: .875rem; color: var(--text-2); margin-top: .25rem; }

/* ===== Sections ===== */
.section { padding: 80px 0; }
.section-white { background: #fff; }
.section-tint { background: rgba(232,241,254,.55); }
.section-head { max-width: 720px; margin-bottom: 2.75rem; }
.section-title {
  font-size: 30px; font-weight: 700; color: var(--text-1);
  line-height: 1.35; margin: .35rem 0 .5rem;
}
.section-subtitle { color: var(--text-2); font-size: 1rem; margin-bottom: 0; }

/* ===== Feature Cards ===== */
.feature-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card);
  padding: 28px; height: 100%; box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.feature-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 52px; height: 52px; border-radius: 12px;
  background: var(--primary-light); color: var(--primary); margin-bottom: 1rem;
}
.feature-title { font-size: 1.15rem; font-weight: 600; margin-bottom: .45rem; color: var(--text-1); }
.feature-text { font-size: .9rem; color: var(--text-2); line-height: 1.75; margin-bottom: 0; }

/* ===== Scenario Cards ===== */
.scenario-card {
  display: flex; gap: 1.25rem; align-items: stretch;
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card);
  padding: 1.4rem; height: 100%; box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
}
.scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.scenario-img {
  width: 128px; flex: none; border-radius: 10px; overflow: hidden; background: var(--primary-light);
}
.scenario-img img { width: 100%; height: 100%; object-fit: cover; }
.scenario-body { display: flex; flex-direction: column; }
.scenario-body h3 { font-size: 1.1rem; font-weight: 600; margin-bottom: .4rem; color: var(--text-1); }
.scenario-body p { font-size: .9rem; color: var(--text-2); margin-bottom: .5rem; flex: 1; }
.scenario-tag {
  display: inline-flex; align-items: center; gap: .35rem;
  font-size: .78rem; font-weight: 500; color: var(--primary);
  background: var(--primary-light); border-radius: 999px; padding: .2rem .7rem;
  align-self: flex-start;
}

/* ===== Process ===== */
.process-wrap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
.process-step {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card);
  padding: 1.9rem 1.5rem; box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
}
.process-step:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.step-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; font-weight: 700; margin-bottom: .9rem;
}
.process-step h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: .4rem; color: var(--text-1); }
.process-step p { font-size: .875rem; color: var(--text-2); margin: 0; line-height: 1.7; }

/* ===== Evidence ===== */
.quote-card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card);
  padding: 2rem; box-shadow: var(--shadow-card); height: 100%;
}
.quote-mark {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary);
  display: flex; align-items: center; justify-content: center; margin-bottom: 1rem;
}
.quote-text {
  font-size: 1rem; color: var(--text-1); line-height: 1.8;
  border-left: 3px solid var(--primary); padding-left: 1rem; margin-bottom: 1.25rem;
}
.quote-author { font-size: .875rem; color: var(--text-2); }
.metric-card {
  background: linear-gradient(135deg, #fff, #f4f8ff);
  border: 1px solid var(--border); border-radius: var(--radius-card);
  padding: 1.6rem 1.8rem; height: 100%; box-shadow: var(--shadow-card);
}
.metric-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: .9rem 0; border-bottom: 1px dashed var(--border);
}
.metric-row:last-child { border-bottom: 0; }
.metric-label { font-size: .95rem; color: var(--text-2); }
.metric-value { font-size: 1.25rem; font-weight: 700; color: var(--primary); }
.badge-line {
  display: flex; gap: .6rem; flex-wrap: wrap;
  margin-top: 2rem; justify-content: center;
}
.badge-pill {
  display: inline-block; background: var(--primary-light); color: var(--primary);
  font-size: .8rem; font-weight: 500; padding: .3rem .9rem;
  border-radius: 999px; border: 1px solid rgba(46,124,246,.12);
}

/* ===== FAQ ===== */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question {
  position: relative; display: block; width: 100%;
  background: none; border: 0; text-align: left;
  padding: 1.2rem 2.75rem 1.2rem 1.2rem;
  cursor: pointer; font-size: 1rem; font-weight: 600;
  color: var(--text-1); border-radius: 8px; transition: background .2s ease;
}
.faq-question:hover { background: #F0F5FD; }
.faq-question::before {
  content: ""; position: absolute; left: 0; top: 50%;
  transform: translateY(-50%); width: 4px; height: 0;
  border-radius: 2px; background: var(--primary); transition: height .25s ease;
}
.faq-item.open .faq-question::before { height: 22px; }
.faq-question::after {
  content: ""; position: absolute; right: 1.1rem; top: 50%;
  width: 10px; height: 10px;
  border-right: 2px solid var(--text-3); border-bottom: 2px solid var(--text-3);
  transform: translateY(-70%) rotate(45deg);
  transition: transform .25s ease, border-color .25s ease;
}
.faq-item.open .faq-question::after { transform: translateY(-30%) rotate(225deg); border-color: var(--primary); }
.faq-answer {
  max-height: 0; overflow: hidden;
  padding: 0 1.2rem;
  transition: max-height .3s ease, padding .3s ease;
}
.faq-item.open .faq-answer { max-height: 600px; padding: 0 1.2rem 1.1rem; }
.faq-answer p { margin: 0; font-size: .9rem; color: var(--text-2); line-height: 1.8; }

/* ===== CTA ===== */
.cta-section { padding: 80px 0; background: #fff; }
.cta-inner {
  max-width: 780px; margin: 0 auto; text-align: center;
  background: linear-gradient(135deg, var(--primary-light), #f7fbff);
  border: 1px solid rgba(46,124,246,.12);
  border-radius: 20px; padding: 3rem 2.5rem;
}
.cta-title { font-size: 1.6rem; font-weight: 700; margin-bottom: .6rem; color: var(--text-1); }
.cta-desc { color: var(--text-2); margin-bottom: 1.8rem; font-size: .95rem; }
.cta-form { max-width: 460px; margin: 0 auto; display: flex; gap: .6rem; flex-wrap: wrap; }
.cta-form .form-control {
  flex: 1; min-width: 0;
  border-radius: var(--radius-btn); border: 1px solid var(--border);
  padding: .62rem 1rem; background: #fff; color: var(--text-1);
  transition: border-color .2s ease, box-shadow .2s ease;
}
.cta-form .form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(46,124,246,.15);
  outline: 0;
}
.cta-form .form-control::placeholder { color: var(--text-3); }
.cta-form .btn { flex: none; }

/* ===== Footer ===== */
.site-footer {
  background: linear-gradient(135deg, var(--dark-1), var(--dark-2));
  color: #d6e2f2; padding: 64px 0 0;
}
.footer-brand {
  display: flex; align-items: center; gap: .5rem;
  font-size: 1.25rem; font-weight: 700; color: #fff; margin-bottom: .8rem;
}
.footer-brand svg { color: var(--gold); flex: none; }
.footer-desc { font-size: .9rem; line-height: 1.8; color: #a7b8d4; max-width: 320px; margin-bottom: 0; }
.footer-title { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 1rem; }
.footer-links, .footer-contact { list-style: none; margin: 0; padding: 0; }
.footer-links li, .footer-contact li { margin-bottom: .55rem; font-size: .9rem; }
.footer-links a { color: #a7b8d4; transition: color .2s ease; }
.footer-links a:hover { color: #7AABF8; }
.footer-contact li { color: #a7b8d4; display: flex; align-items: center; gap: .45rem; }
.footer-contact svg { color: var(--gold); flex: none; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  margin-top: 48px; padding: 20px 0;
  text-align: center; font-size: .85rem; color: #8ba3c2;
}

/* ===== Float CTA ===== */
.float-cta {
  position: fixed; right: 20px; bottom: 40px; z-index: 999;
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--gold); color: #fff;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 24px rgba(246,183,60,.35);
  transition: transform .2s ease, box-shadow .2s ease;
}
.float-cta:hover { transform: scale(1.08); color: #fff; box-shadow: 0 12px 30px rgba(246,183,60,.45); }
.float-mobile-cta { display: none; }

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .main-nav {
    position: fixed; top: 76px; left: 0; right: 0; z-index: 998;
    background: #fff; border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 30px rgba(30,60,120,.1);
    display: none; padding: 1rem 0;
  }
  .main-nav.open { display: block; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-link { padding: .85rem 1.5rem; font-size: 1rem; }
  .nav-link::after { display: none; }
  .nav-link.active { background: var(--primary-light); }
  .header-tools { margin-left: auto; }
  .search-wrap { display: none; }
  .nav-toggle { display: inline-flex; }
}
@media (max-width: 767px) {
  .guide-hero { padding: 48px 0 56px; }
  .page-title { font-size: 28px; }
  .section-title { font-size: 24px; }
  .section, .cta-section { padding: 56px 0; }
  .hero-actions .btn { width: 100%; }
  .process-wrap { grid-template-columns: 1fr 1fr; }
  .cta-form { flex-direction: column; }
  .cta-form .btn { width: 100%; }
  .float-cta { display: none; }
  .float-mobile-cta {
    display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 998;
    background: #fff; border-top: 1px solid var(--border);
    padding: 10px 16px;
  }
  .float-mobile-cta .btn { width: 100%; }
  body { padding-bottom: 68px; }
}
@media (max-width: 575px) {
  .brand-text { font-size: 1.1rem; }
  .header-row { min-height: 64px; }
  .main-nav { top: 64px; }
  .process-wrap { grid-template-columns: 1fr; }
  .scenario-card { flex-direction: column; }
  .scenario-img { width: 100%; height: 190px; }
  .stat-num { font-size: 1.6rem; }
  .cta-inner { padding: 2rem 1.25rem; }
}