/* roulang page: index */
:root {
  --primary: #176b5b;
  --primary-dark: #0d4a3e;
  --primary-deep: #0b2f28;
  --accent: #c8a96a;
  --accent-soft: #e8d9ba;
  --bg: #f8f6f2;
  --bg-alt: #ede9e0;
  --bg-deep: #12231e;
  --text: #24302c;
  --text-soft: #5d6a65;
  --text-light: #8a948f;
  --border: #dedbd3;
  --white: #ffffff;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --shadow-sm: 0 4px 16px rgba(18, 35, 30, .06);
  --shadow-md: 0 12px 34px rgba(18, 35, 30, .09);
  --shadow-lg: 0 24px 60px rgba(18, 35, 30, .14);
  --transition: all .3s ease;
  --max-width: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 60px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: .2px;
  transition: var(--transition);
  border: 2px solid transparent;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 24px rgba(23, 107, 91, .3);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(23, 107, 91, .38); }
.btn-outline-light {
  border-color: rgba(255,255,255,.65);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover { background: rgba(255,255,255,.12); border-color: #fff; transform: translateY(-2px); }
.btn-light {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 8px 24px rgba(0,0,0,.14);
}
.btn-light:hover { background: var(--accent-soft); transform: translateY(-2px); }
.btn-outline {
  border-color: var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }

/* ========== 头部 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(18, 35, 30, .05);
}
.brand-bar {
  border-bottom: 1px solid rgba(222, 219, 211, .7);
  background: #fff;
}
.brand-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-mark {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -1px;
  box-shadow: 0 6px 18px rgba(23, 107, 91, .25);
}
.logo-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: .5px;
  white-space: nowrap;
}
.header-actions { display: flex; align-items: center; gap: 20px; }
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 50px;
  padding: 0 6px 0 18px;
  transition: var(--transition);
}
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(23,107,91,.12); background: #fff; }
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  padding: 9px 4px;
  width: 200px;
  font-size: 14px;
  color: var(--text);
}
.search-box button {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
}
.search-box button:hover { background: var(--primary-dark); }

/* 频道行 */
.channel-nav {
  background: rgba(255,255,255,.96);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 6px;
  padding-bottom: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-inner::-webkit-scrollbar { display: none; }
.nav-link {
  padding: 10px 22px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-soft);
  white-space: nowrap;
  transition: var(--transition);
  position: relative;
}
.nav-link:hover { color: var(--primary); background: rgba(23,107,91,.07); }
.nav-link.active {
  color: var(--primary);
  background: rgba(23,107,91,.1);
  font-weight: 700;
}
.nav-link.active::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 2px;
  transform: translateX(-50%);
  width: 18px;
  height: 3px;
  border-radius: 3px;
  background: var(--primary);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  background: linear-gradient(135deg, rgba(13, 74, 62, .92), rgba(11, 47, 40, .88)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  padding: 160px 0 180px;
  text-align: center;
  overflow: hidden;
}
.hero-inner { max-width: 780px; margin: 0 auto; position: relative; z-index: 2; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 22px;
  border-radius: 60px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.22);
  font-size: 14px;
  letter-spacing: 1px;
  color: var(--accent-soft);
  margin-bottom: 28px;
}
.hero-tag i { font-size: 13px; }
.hero h1 {
  font-size: 58px;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: 1px;
  margin-bottom: 22px;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.8;
  color: rgba(255,255,255,.88);
  max-width: 640px;
  margin: 0 auto 40px;
}
.hero-actions { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; }
.hero-note {
  margin-top: 36px;
  font-size: 14px;
  color: rgba(255,255,255,.6);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}
.hero-note i { font-size: 13px; }
.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  line-height: 0;
  z-index: 1;
}
.hero-wave svg { width: 100%; height: 110px; display: block; }

/* ========== 通用板块 ========== */
.section { padding: 100px 0; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  border-radius: 50px;
  background: rgba(23,107,91,.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.section-tag i { font-size: 12px; }
.section-title {
  font-size: 38px;
  line-height: 1.25;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: .5px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-soft);
  max-width: 640px;
  line-height: 1.8;
}
.section-head { margin-bottom: 52px; }

/* ========== 核心说明 ========== */
.section-intro {
  background: var(--bg);
  position: relative;
}
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.intro-content .section-title { margin-bottom: 20px; }
.intro-text p { color: var(--text-soft); margin-bottom: 18px; font-size: 16px; }
.intro-text p:first-of-type { font-size: 18px; color: var(--text); font-weight: 500; }
.intro-points { margin-top: 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.point-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}
.point-item i { color: var(--primary); font-size: 16px; width: 22px; text-align: center; }
.point-item:hover { box-shadow: var(--shadow-sm); transform: translateY(-2px); border-color: rgba(23,107,91,.3); }
.intro-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.intro-media img { width: 100%; height: 420px; object-fit: cover; }
.intro-media::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(11,47,40,.35));
  z-index: 1;
}
.intro-media-badge {
  position: absolute;
  left: 24px;
  bottom: 24px;
  z-index: 2;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(8px);
  padding: 12px 22px;
  border-radius: 14px;
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-dark);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}
.intro-media-badge i { color: var(--primary); }

/* ========== 分类入口 ========== */
.section-categories { background: var(--bg-alt); }
.category-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.category-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.category-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.category-media { position: relative; height: 260px; overflow: hidden; }
.category-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.category-card:hover .category-media img { transform: scale(1.06); }
.category-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(11,47,40,.45));
}
.category-body { padding: 32px 34px 36px; display: flex; flex-direction: column; flex: 1; }
.category-title { font-size: 24px; font-weight: 800; color: var(--text); margin-bottom: 10px; }
.category-desc { color: var(--text-soft); font-size: 15px; line-height: 1.7; margin-bottom: 24px; flex: 1; }
.category-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
  color: var(--primary);
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  width: fit-content;
  transition: var(--transition);
}
.category-link:hover { border-bottom-color: var(--primary); gap: 14px; }
.category-link i { font-size: 13px; }

/* ========== 资讯列表 ========== */
.section-list { background: var(--bg); }
.list-wrap {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 44px 48px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}
.post-item {
  padding: 30px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.post-item:first-child { padding-top: 0; }
.post-item:last-child { padding-bottom: 0; border-bottom: none; }
.post-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.post-category {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(23,107,91,.1);
  color: var(--primary);
  padding: 4px 14px;
  border-radius: 40px;
  font-size: 13px;
  font-weight: 600;
}
.post-category i { font-size: 11px; }
.post-date {
  color: var(--text-light);
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.post-date i { font-size: 12px; }
.post-title { font-size: 20px; line-height: 1.5; font-weight: 700; margin-bottom: 10px; }
.post-title a { color: var(--text); }
.post-title a:hover { color: var(--primary); }
.post-excerpt {
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.post-more:hover { gap: 12px; }
.post-more i { font-size: 12px; }
.empty-tip {
  text-align: center;
  padding: 50px 0;
  color: var(--text-light);
  font-size: 15px;
}

/* ========== 登录流程 ========== */
.section-steps {
  position: relative;
  background: linear-gradient(135deg, rgba(11, 47, 40, .95), rgba(23, 107, 91, .9)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  color: #fff;
  padding: 110px 0;
}
.section-steps .section-tag { background: rgba(255,255,255,.14); color: var(--accent-soft); }
.section-steps .section-title { color: #fff; }
.section-steps .section-desc { color: rgba(255,255,255,.78); }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  margin-top: 60px;
}
.step-item {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: var(--radius-md);
  padding: 36px 28px 32px;
  text-align: center;
  position: relative;
  backdrop-filter: blur(6px);
  transition: var(--transition);
}
.step-item:hover { background: rgba(255,255,255,.14); transform: translateY(-4px); }
.step-num {
  position: absolute;
  top: 18px;
  right: 22px;
  font-size: 42px;
  font-weight: 800;
  color: rgba(255,255,255,.14);
  line-height: 1;
}
.step-icon {
  width: 64px;
  height: 64px;
  border-radius: 20px;
  background: rgba(255,255,255,.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 24px;
  color: var(--accent-soft);
}
.step-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.step-desc { font-size: 14px; line-height: 1.7; color: rgba(255,255,255,.75); }

/* ========== 平台优势 ========== */
.section-features { background: var(--bg-alt); }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}
.stat-item {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 36px 28px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--border);
}
.stat-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.stat-num {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 8px;
}
.stat-label { color: var(--text-soft); font-size: 15px; font-weight: 500; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.feature-item {
  display: flex;
  gap: 20px;
  padding: 28px;
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.feature-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.feature-icon {
  width: 52px;
  height: 52px;
  flex-shrink: 0;
  border-radius: 16px;
  background: rgba(23,107,91,.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.feature-body h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; }
.feature-body p { font-size: 14px; color: var(--text-soft); line-height: 1.7; }

/* ========== FAQ ========== */
.section-faq { background: var(--bg); }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px 30px;
  margin-bottom: 16px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}
.faq-item[open] { border-color: rgba(23,107,91,.3); box-shadow: var(--shadow-md); }
.faq-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(23,107,91,.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.faq-icon i { font-size: 14px; }
.faq-item[open] .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  padding-top: 16px;
  margin-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.8;
}

/* ========== CTA 订阅 ========== */
.section-cta {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  padding: 90px 0;
  color: #fff;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.section-cta::before {
  content: '';
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(255,255,255,.05);
  top: -120px;
  right: -80px;
}
.section-cta::after {
  content: '';
  position: absolute;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,.04);
  bottom: -100px;
  left: -60px;
}
.cta-inner { position: relative; z-index: 2; max-width: 620px; margin: 0 auto; }
.cta-title { font-size: 36px; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.cta-desc { font-size: 16px; color: rgba(255,255,255,.85); margin-bottom: 36px; line-height: 1.8; }
.sub-form {
  display: flex;
  gap: 12px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 60px;
  padding: 8px;
  max-width: 520px;
  margin: 0 auto;
  backdrop-filter: blur(8px);
}
.sub-form input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  color: #fff;
  font-size: 15px;
  padding: 10px 20px;
  min-width: 0;
}
.sub-form input::placeholder { color: rgba(255,255,255,.6); }
.sub-form .btn { padding: 12px 30px; }

/* ========== 页脚 ========== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255,255,255,.7);
  padding: 70px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 50px;
}
.footer-brand .logo-text { color: #fff; }
.footer-brand .logo-mark { background: rgba(255,255,255,.1); color: var(--accent-soft); }
.footer-text { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.55); margin-top: 18px; max-width: 320px; }
.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.footer-links li { margin-bottom: 12px; }
.footer-links a {
  font-size: 14px;
  color: rgba(255,255,255,.55);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-links a:hover { color: var(--accent-soft); padding-left: 4px; }
.footer-links a i { font-size: 11px; color: var(--primary); opacity: .7; }
.footer-info p { font-size: 14px; color: rgba(255,255,255,.55); margin-bottom: 12px; display: flex; gap: 10px; align-items: flex-start; }
.footer-info p i { margin-top: 5px; color: var(--primary); font-size: 13px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 24px 0;
  text-align: center;
  font-size: 14px;
  color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.55); }
.footer-bottom a:hover { color: #fff; }

/* ========== 焦点状态 ========== */
a:focus-visible, button:focus-visible, input:focus-visible, summary:focus-visible {
  outline: 3px solid rgba(23,107,91,.4);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .hero { padding: 120px 0 140px; }
  .hero h1 { font-size: 46px; }
  .section { padding: 80px 0; }
  .section-title { font-size: 32px; }
  .intro-grid { gap: 40px; }
  .intro-media img { height: 360px; }
  .steps-grid { gap: 20px; }
  .stats-grid { gap: 16px; }
  .features-grid { gap: 20px; }
  .stat-num { font-size: 34px; }
}

@media (max-width: 768px) {
  .brand-inner { flex-direction: column; gap: 12px; padding-top: 12px; padding-bottom: 12px; }
  .search-box { width: 100%; }
  .search-box input { flex: 1; width: auto; }
  .channel-nav .nav-inner { flex-wrap: nowrap; overflow-x: auto; }
  .hero { padding: 100px 0 120px; }
  .hero h1 { font-size: 36px; }
  .hero-sub { font-size: 16px; }
  .intro-grid { grid-template-columns: 1fr; gap: 36px; }
  .intro-media img { height: 300px; }
  .category-grid { grid-template-columns: 1fr; }
  .list-wrap { padding: 30px 26px; }
  .post-title { font-size: 18px; }
  .steps-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .section-cta { padding: 70px 0; }
  .cta-title { font-size: 28px; }
  .sub-form { flex-direction: column; border-radius: 24px; background: rgba(255,255,255,.1); padding: 16px; }
  .sub-form input { text-align: center; }
}

@media (max-width: 520px) {
  .hero { padding: 80px 0 100px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; max-width: 280px; }
  .section { padding: 60px 0; }
  .section-title { font-size: 28px; }
  .section-head { margin-bottom: 36px; }
  .intro-points { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item { padding: 24px 16px; }
  .stat-num { font-size: 28px; }
  .stat-label { font-size: 13px; }
  .feature-item { flex-direction: column; padding: 22px; }
  .post-meta { gap: 10px; }
  .list-wrap { padding: 24px 18px; }
  .faq-item { padding: 18px 20px; }
  .footer-bottom { font-size: 13px; line-height: 1.6; }
}

/* roulang page: article */
:root{
  --primary:#0f766e;
  --primary-dark:#0b5d58;
  --primary-light:#ccfbf1;
  --accent:#d97706;
  --accent-light:#fef3c7;
  --bg:#f7f5f2;
  --bg-deep:#0f2a28;
  --card:#ffffff;
  --text:#1f2d3d;
  --text-weak:#64748b;
  --border:#e2e8f0;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(15,23,42,.06);
  --shadow-lg:0 20px 50px rgba(15,23,42,.12);
  --transition:.25s ease;
  --container:1180px;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--transition);}
button{font-family:inherit;border:none;cursor:pointer;}
input,textarea{font-family:inherit;outline:none;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--card);
  box-shadow:0 1px 0 var(--border),0 4px 20px rgba(0,0,0,.03);
}
.brand-bar{
  border-bottom:1px solid var(--border);
  background:var(--card);
}
.brand-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:72px;
  gap:20px;
}
.brand-logo{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex-shrink:0;
}
.logo-mark{
  width:42px;
  height:42px;
  border-radius:12px;
  background:linear-gradient(135deg,var(--primary),#14b8a6);
  color:#fff;
  font-size:22px;
  font-weight:800;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 8px 20px rgba(15,118,110,.25);
}
.logo-text{
  font-size:20px;
  font-weight:800;
  color:var(--text);
  letter-spacing:.5px;
  white-space:nowrap;
}
.header-actions{display:flex;align-items:center;gap:12px;}
.search-box{
  display:flex;
  align-items:center;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:999px;
  padding:4px 6px 4px 18px;
  transition:border-color var(--transition),box-shadow var(--transition);
}
.search-box:focus-within{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(15,118,110,.1);
  background:#fff;
}
.search-box input{
  border:none;
  background:transparent;
  font-size:14px;
  color:var(--text);
  width:200px;
  padding:6px 0;
}
.search-box input::placeholder{color:var(--text-weak);}
.search-box button{
  width:34px;
  height:34px;
  border-radius:50%;
  background:var(--primary);
  color:#fff;
  font-size:13px;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background var(--transition),transform var(--transition);
}
.search-box button:hover{background:var(--primary-dark);transform:scale(1.05);}

.channel-nav{
  background:linear-gradient(90deg,var(--bg-deep),#123b38);
  overflow-x:auto;
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:6px;
  height:48px;
  white-space:nowrap;
}
.nav-link{
  padding:8px 18px;
  border-radius:999px;
  font-size:14px;
  font-weight:600;
  color:rgba(255,255,255,.8);
  transition:color var(--transition),background var(--transition),transform var(--transition);
}
.nav-link:hover{
  color:#fff;
  background:rgba(255,255,255,.12);
}
.nav-link.active{
  color:#fff;
  background:rgba(255,255,255,.18);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.2);
}

.article-banner{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;
  background-position:center;
  padding:96px 0 110px;
  color:#fff;
  overflow:hidden;
}
.article-banner::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(105deg,rgba(8,32,30,.92) 20%,rgba(15,118,110,.72) 75%,rgba(217,119,6,.55));
  z-index:1;
}
.article-banner .container{position:relative;z-index:2;}
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  font-size:14px;
  color:rgba(255,255,255,.75);
  margin-bottom:24px;
}
.breadcrumb a{color:rgba(255,255,255,.9);transition:color var(--transition);}
.breadcrumb a:hover{color:var(--accent-light);}
.breadcrumb i{font-size:11px;opacity:.6;}

.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(255,255,255,.18);
  border:1px solid rgba(255,255,255,.25);
  backdrop-filter:blur(8px);
  padding:7px 16px;
  border-radius:999px;
  font-size:13px;
  font-weight:600;
  letter-spacing:.5px;
  margin-bottom:18px;
  color:#fff;
}
.hero-badge i{color:var(--accent-light);}
.banner-title{
  font-size:40px;
  line-height:1.25;
  font-weight:800;
  max-width:820px;
  margin-bottom:18px;
  text-shadow:0 2px 20px rgba(0,0,0,.2);
}
.banner-meta{
  display:flex;
  flex-wrap:wrap;
  gap:22px;
  font-size:14px;
  color:rgba(255,255,255,.8);
}
.banner-meta span{display:inline-flex;align-items:center;gap:8px;}
.banner-meta i{color:var(--accent-light);}
.hero-wave{
  position:absolute;
  bottom:-2px;
  left:0;
  right:0;
  z-index:2;
  line-height:0;
}
.hero-wave svg{width:100%;height:64px;display:block;fill:var(--bg);}

.main{padding:64px 0 80px;}
.article-layout{
  display:grid;
  grid-template-columns:1fr 340px;
  gap:44px;
  align-items:start;
}
.article-main{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:44px;
}
.article-body{
  font-size:16px;
  color:#334155;
}
.article-body p{margin-bottom:20px;}
.article-body h2{
  font-size:24px;
  font-weight:800;
  color:var(--text);
  margin:36px 0 16px;
  padding-left:14px;
  border-left:4px solid var(--primary);
  line-height:1.4;
}
.article-body h3{
  font-size:19px;
  font-weight:700;
  color:var(--text);
  margin:28px 0 12px;
}
.article-body ul,.article-body ol{margin:0 0 20px 1.4em;color:#334155;}
.article-body li{margin-bottom:8px;}
.article-body a{color:var(--primary);font-weight:600;border-bottom:1px solid rgba(15,118,110,.3);}
.article-body a:hover{color:var(--accent);border-color:var(--accent);}
.article-body blockquote{
  background:var(--bg);
  border-left:4px solid var(--accent);
  padding:18px 24px;
  border-radius:0 12px 12px 0;
  margin:24px 0;
  color:#475569;
  font-style:italic;
}
.article-body img{border-radius:12px;margin:24px 0;box-shadow:var(--shadow);}

.article-info{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:18px;
  padding:18px 22px;
  background:var(--bg);
  border-radius:12px;
  margin-bottom:32px;
  font-size:14px;
  color:var(--text-weak);
}
.article-info i{color:var(--primary);margin-right:6px;}

.not-found{
  text-align:center;
  padding:70px 30px;
}
.not-found i{
  font-size:48px;
  color:var(--text-weak);
  margin-bottom:20px;
}
.not-found h2{
  font-size:28px;
  font-weight:800;
  color:var(--text);
  margin-bottom:12px;
}
.not-found p{color:var(--text-weak);margin-bottom:28px;font-size:15px;}
.not-found .btn{margin-top:8px;}

.sidebar{
  display:flex;
  flex-direction:column;
  gap:24px;
  position:sticky;
  top:140px;
}
.side-card{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:28px;
}
.side-card .side-title{
  font-size:18px;
  font-weight:800;
  color:var(--text);
  margin-bottom:20px;
  display:flex;
  align-items:center;
  gap:10px;
}
.side-card .side-title i{color:var(--primary);}
.side-list{list-style:none;}
.side-list li{
  padding:12px 0;
  border-bottom:1px solid var(--border);
}
.side-list li:last-child{border-bottom:none;padding-bottom:0;}
.side-list a{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:14px;
  line-height:1.5;
  color:var(--text);
  transition:color var(--transition);
}
.side-list a:hover{color:var(--primary);}
.side-list .side-thumb{
  width:66px;
  height:66px;
  border-radius:10px;
  object-fit:cover;
  flex-shrink:0;
  box-shadow:0 4px 10px rgba(0,0,0,.08);
}
.side-list .side-tag{
  font-size:12px;
  color:var(--primary);
  background:var(--primary-light);
  padding:2px 10px;
  border-radius:999px;
  display:inline-block;
  margin-bottom:5px;
  font-weight:600;
}
.side-list .side-link-title{font-weight:600;display:block;}

.side-cta{
  background:linear-gradient(135deg,var(--bg-deep),#0f4a46);
  color:#fff;
  border:none;
  text-align:left;
}
.side-cta .side-title{color:#fff;}
.side-cta .side-title i{color:var(--accent-light);}
.side-cta p{
  font-size:14px;
  color:rgba(255,255,255,.75);
  margin-bottom:20px;
  line-height:1.7;
}
.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:var(--primary);
  color:#fff;
  font-size:15px;
  font-weight:700;
  padding:12px 28px;
  border-radius:999px;
  transition:background var(--transition),transform var(--transition),box-shadow var(--transition);
  box-shadow:0 8px 20px rgba(15,118,110,.25);
}
.btn-primary:hover{
  background:var(--primary-dark);
  transform:translateY(-2px);
  box-shadow:0 12px 28px rgba(15,118,110,.32);
  color:#fff;
}
.btn-light{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:rgba(255,255,255,.15);
  border:1px solid rgba(255,255,255,.35);
  color:#fff;
  font-size:14px;
  font-weight:700;
  padding:12px 28px;
  border-radius:999px;
  transition:background var(--transition),transform var(--transition);
}
.btn-light:hover{
  background:rgba(255,255,255,.28);
  transform:translateY(-2px);
  color:#fff;
}

.section-block{padding:70px 0;}
.section-title{
  font-size:32px;
  font-weight:800;
  color:var(--text);
  text-align:center;
  margin-bottom:12px;
  letter-spacing:1px;
}
.section-sub{
  font-size:15px;
  color:var(--text-weak);
  text-align:center;
  max-width:680px;
  margin:0 auto 48px;
}
.section-sub i{color:var(--accent);}

.related-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.related-card{
  background:var(--card);
  border-radius:var(--radius);
  overflow:hidden;
  box-shadow:var(--shadow);
  transition:transform var(--transition),box-shadow var(--transition);
}
.related-card:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-lg);
}
.related-card .card-thumb{
  width:100%;
  height:180px;
  object-fit:cover;
  transition:transform var(--transition);
}
.related-card:hover .card-thumb{transform:scale(1.05);}
.related-card .card-body{padding:24px;}
.related-card .card-badge{
  display:inline-block;
  background:var(--primary-light);
  color:var(--primary-dark);
  font-size:12px;
  font-weight:700;
  padding:4px 14px;
  border-radius:999px;
  margin-bottom:12px;
}
.related-card h3{
  font-size:17px;
  font-weight:700;
  line-height:1.5;
  color:var(--text);
  margin-bottom:10px;
}
.related-card h3 a{transition:color var(--transition);}
.related-card h3 a:hover{color:var(--primary);}
.related-card .card-meta{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:13px;
  color:var(--text-weak);
}
.related-card .card-meta i{color:var(--primary);font-size:12px;}

.info-band{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  overflow:hidden;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:0;
}
.info-band .info-image{
  background-image:url('/assets/images/coverpic/cover-3.png');
  background-size:cover;
  background-position:center;
  min-height:340px;
  position:relative;
}
.info-band .info-image::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,transparent 50%,rgba(255,255,255,.9));
}
.info-band .info-content{
  padding:48px;
  display:flex;
  flex-direction:column;
  justify-content:center;
}
.info-band .info-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--primary);
  font-weight:700;
  font-size:14px;
  margin-bottom:16px;
}
.info-band h2{
  font-size:28px;
  font-weight:800;
  color:var(--text);
  margin-bottom:18px;
  line-height:1.35;
}
.info-band p{
  color:var(--text-weak);
  margin-bottom:24px;
  font-size:15px;
}
.feature-list{
  list-style:none;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:12px;
}
.feature-list li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:var(--text);
  background:var(--bg);
  padding:10px 14px;
  border-radius:10px;
}
.feature-list li i{color:var(--primary);}

.steps-section{
  background:var(--bg-deep);
  position:relative;
  overflow:hidden;
  color:#fff;
}
.steps-section::before{
  content:'';
  position:absolute;
  top:-80px;
  right:-80px;
  width:320px;
  height:320px;
  background:rgba(255,255,255,.04);
  border-radius:50%;
}
.steps-section .section-title{color:#fff;}
.steps-section .section-sub{color:rgba(255,255,255,.65);}
.steps-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  position:relative;
  z-index:2;
}
.step-card{
  background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
  padding:32px 24px;
  text-align:center;
  transition:background var(--transition),transform var(--transition);
}
.step-card:hover{
  background:rgba(255,255,255,.1);
  transform:translateY(-4px);
}
.step-num{
  width:46px;
  height:46px;
  border-radius:50%;
  background:var(--accent);
  color:#fff;
  font-weight:800;
  font-size:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin:0 auto 18px;
  box-shadow:0 0 0 6px rgba(217,119,6,.2);
}
.step-card h3{
  font-size:17px;
  font-weight:700;
  margin-bottom:10px;
}
.step-card p{
  font-size:14px;
  color:rgba(255,255,255,.65);
  line-height:1.6;
}

.faq-section{background:var(--card);}
.faq-list{
  max-width:820px;
  margin:0 auto;
}
.faq-item{
  background:var(--bg);
  border-radius:14px;
  margin-bottom:14px;
  border:1px solid var(--border);
  overflow:hidden;
  transition:border-color var(--transition),box-shadow var(--transition);
}
.faq-item:hover{border-color:var(--primary-light);}
.faq-item summary{
  list-style:none;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:20px 24px;
  font-size:16px;
  font-weight:700;
  color:var(--text);
  cursor:pointer;
  transition:color var(--transition);
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary i{
  color:var(--primary);
  transition:transform var(--transition);
  flex-shrink:0;
}
.faq-item[open] summary i{
  transform:rotate(180deg);
  color:var(--accent);
}
.faq-item[open] summary{color:var(--primary-dark);}
.faq-item .faq-body{
  padding:0 24px 20px;
  color:var(--text-weak);
  font-size:15px;
  line-height:1.75;
}

.cta-section{
  background-image:url('/assets/images/backpic/back-3.png');
  background-size:cover;
  background-position:center;
  position:relative;
  padding:96px 0;
  color:#fff;
  text-align:center;
}
.cta-section::before{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,rgba(8,32,30,.92),rgba(15,118,110,.78));
}
.cta-section .container{position:relative;z-index:2;}
.cta-section h2{
  font-size:34px;
  font-weight:800;
  margin-bottom:16px;
}
.cta-section p{
  font-size:16px;
  color:rgba(255,255,255,.8);
  max-width:620px;
  margin:0 auto 32px;
}
.cta-btns{
  display:flex;
  justify-content:center;
  gap:16px;
  flex-wrap:wrap;
}

.site-footer{
  background:var(--bg-deep);
  color:rgba(255,255,255,.7);
  padding:70px 0 0;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-brand .brand-logo{margin-bottom:18px;}
.footer-brand .logo-text{color:#fff;}
.footer-text{
  font-size:15px;
  line-height:1.8;
  max-width:320px;
  margin-top:16px;
  color:rgba(255,255,255,.6);
}
.footer-title{
  font-size:17px;
  font-weight:700;
  color:#fff;
  margin-bottom:20px;
}
.footer-links{
  list-style:none;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:rgba(255,255,255,.65);
  transition:color var(--transition),padding-left var(--transition);
}
.footer-links a i{font-size:10px;color:var(--accent);}
.footer-links a:hover{color:#fff;padding-left:4px;}
.footer-info p{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  margin-bottom:12px;
  color:rgba(255,255,255,.6);
}
.footer-info i{color:var(--accent);}
.footer-bottom{
  padding:22px 24px;
  text-align:center;
  font-size:13px;
  color:rgba(255,255,255,.45);
}
.footer-bottom a{color:rgba(255,255,255,.65);}
.footer-bottom a:hover{color:#fff;}

@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:40px;}
  .sidebar{position:static;flex-direction:row;flex-wrap:wrap;}
  .side-card{flex:1 1 calc(50% - 12px);min-width:260px;}
  .related-grid{grid-template-columns:repeat(2,1fr);}
  .steps-grid{grid-template-columns:repeat(2,1fr);}
  .info-band{grid-template-columns:1fr;}
  .info-band .info-image{min-height:260px;order:2;}
  .info-band .info-image::after{background:linear-gradient(0deg,rgba(255,255,255,.7),transparent);}
  .info-band .info-content{order:1;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:768px){
  .brand-inner{height:auto;padding:16px 0;flex-direction:column;align-items:flex-start;gap:12px;}
  .header-actions{width:100%;}
  .search-box{flex:1;}
  .search-box input{flex:1;width:auto;}
  .nav-inner{height:auto;padding:8px 0;gap:4px;}
  .nav-link{padding:8px 14px;font-size:13px;}
  .article-banner{padding:64px 0 80px;}
  .banner-title{font-size:30px;}
  .main{padding:48px 0 64px;}
  .article-main{padding:28px 22px;}
  .article-body{font-size:15px;}
  .related-grid{grid-template-columns:1fr;}
  .steps-grid{grid-template-columns:1fr;}
  .banner-meta{gap:14px;flex-direction:column;align-items:flex-start;}
  .section-title{font-size:26px;}
  .info-band .info-content{padding:28px 24px;}
  .info-band h2{font-size:24px;}
  .feature-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:520px){
  .container{padding:0 16px;}
  .logo-text{font-size:17px;}
  .search-box input{width:120px;}
  .banner-title{font-size:24px;}
  .hero-badge{font-size:12px;padding:6px 12px;}
  .article-info{flex-direction:column;align-items:flex-start;gap:8px;}
  .related-card .card-thumb{height:150px;}
  .step-card{padding:24px 18px;}
  .faq-item summary{padding:16px 18px;font-size:15px;}
  .faq-item .faq-body{padding:0 18px 16px;}
  .cta-section{padding:64px 0;}
  .cta-section h2{font-size:26px;}
  .cta-btns .btn-primary,.cta-btns .btn-light{width:100%;text-align:center;}
  .footer-bottom{text-align:center;}
}

/* roulang page: category1 */
:root {
            --primary: #1b5f9c;
            --primary-dark: #12497a;
            --primary-light: #3a8fd4;
            --accent: #e8b44f;
            --accent-light: #f4d589;
            --bg: #f6f8fb;
            --bg-soft: #edf1f5;
            --white: #ffffff;
            --text: #16283b;
            --text-soft: #5c6f82;
            --text-mute: #8ea0b0;
            --border: #dfe7ee;
            --radius-lg: 20px;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow: 0 6px 24px rgba(18, 53, 89, .07);
            --shadow-hover: 0 14px 36px rgba(18, 53, 89, .12);
            --transition: all .28s ease;
            --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        ul {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }
        .container {
            width: min(1200px, 92%);
            margin-inline: auto;
        }

        /* Site Header */
        .site-header {
            background: var(--white);
            box-shadow: 0 2px 12px rgba(18, 53, 89, .06);
            position: sticky;
            top: 0;
            z-index: 100;
        }
        .brand-bar {
            border-bottom: 1px solid var(--border);
        }
        .brand-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .brand-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 800;
            font-size: 19px;
            box-shadow: 0 4px 12px rgba(27, 95, 156, .25);
        }
        .logo-text {
            font-size: 19px;
            font-weight: 700;
            letter-spacing: .5px;
            color: var(--text);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 6px 6px 6px 14px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(27, 95, 156, .12);
        }
        .search-box input {
            font-size: 14px;
            width: 180px;
            color: var(--text);
            background: transparent;
        }
        .search-box input::placeholder {
            color: var(--text-mute);
        }
        .search-box button {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--primary-dark);
        }
        .channel-nav {
            background: var(--white);
        }
        .nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
            height: 50px;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-soft);
            transition: var(--transition);
            position: relative;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(27, 95, 156, .06);
        }
        .nav-link.active {
            color: var(--white);
            background: var(--primary);
            box-shadow: 0 4px 12px rgba(27, 95, 156, .25);
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            transition: var(--transition);
            cursor: pointer;
            border: 2px solid transparent;
        }
        .btn-primary {
            background: var(--accent);
            color: #16283b;
            box-shadow: 0 6px 20px rgba(232, 180, 79, .3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(232, 180, 79, .4);
            background: #f0c15e;
        }
        .btn-outline-light {
            border-color: rgba(255, 255, 255, .6);
            color: #fff;
            background: transparent;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
        }

        /* Page Banner */
        .page-banner {
            position: relative;
            padding: 90px 0 100px;
            background-size: cover;
            background-position: center;
        }
        .banner-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 28, 46, .85), rgba(13, 45, 75, .68));
        }
        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }
        .banner-tag {
            display: inline-block;
            background: rgba(255, 255, 255, .14);
            border: 1px solid rgba(255, 255, 255, .28);
            color: #fff;
            padding: 5px 16px;
            border-radius: 999px;
            font-size: 13px;
            letter-spacing: 1px;
            margin-bottom: 20px;
        }
        .banner-content h1 {
            color: #fff;
            font-size: 44px;
            line-height: 1.25;
            margin-bottom: 16px;
            font-weight: 800;
        }
        .banner-content p {
            color: rgba(255, 255, 255, .88);
            font-size: 17px;
            max-width: 620px;
            margin-bottom: 30px;
        }
        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .banner-wave {
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            line-height: 0;
            z-index: 2;
        }
        .banner-wave svg {
            width: 100%;
            height: 60px;
        }

        /* Section */
        .section {
            padding: 90px 0;
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 50px;
        }
        .section-tag {
            display: inline-block;
            color: var(--primary);
            background: rgba(27, 95, 156, .08);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--text);
        }
        .section-head>p {
            color: var(--text-soft);
            font-size: 15px;
        }

        /* Guides */
        .guides {
            background: var(--bg);
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .guide-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            padding: 36px 30px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            opacity: 0;
            transition: var(--transition);
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .guide-card:hover::before {
            opacity: 1;
        }
        .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(27, 95, 156, .12), rgba(27, 95, 156, .04));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            margin-bottom: 20px;
        }
        .guide-card h3 {
            font-size: 19px;
            margin-bottom: 10px;
        }
        .guide-card>p {
            color: var(--text-soft);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card-list li {
            display: flex;
            gap: 8px;
            align-items: flex-start;
            font-size: 14px;
            color: var(--text);
            padding: 4px 0;
        }
        .card-list li i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 13px;
        }

        /* Steps */
        .steps {
            background: var(--white);
        }
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 24px;
        }
        .step-item {
            position: relative;
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 20px;
            border: 1px solid var(--border);
            transition: var(--transition);
        }
        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .step-item h3 {
            font-size: 16px;
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-soft);
            line-height: 1.65;
        }

        /* Scenes */
        .scenes {
            background: var(--bg-soft);
        }
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .scene-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .scene-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .scene-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .scene-body {
            padding: 26px 24px 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .scene-body h3 {
            font-size: 18px;
            margin-bottom: 10px;
        }
        .scene-body p {
            font-size: 14px;
            color: var(--text-soft);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }
        .text-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .text-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* Errors */
        .errors {
            background: var(--white);
        }
        .error-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .error-item {
            display: flex;
            align-items: center;
            gap: 22px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px 26px;
            transition: var(--transition);
        }
        .error-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .error-code {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary);
            min-width: 64px;
            text-align: center;
            font-family: monospace;
        }
        .error-info {
            flex: 1;
        }
        .error-info h3 {
            font-size: 16px;
            margin-bottom: 4px;
        }
        .error-info p {
            font-size: 14px;
            color: var(--text-soft);
            line-height: 1.6;
        }
        .error-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 600;
            white-space: nowrap;
        }

        /* Tips */
        .tips {
            background: var(--bg);
        }
        .tips-wrap {
            display: grid;
            grid-template-columns: 1.1fr .9fr;
            gap: 50px;
            align-items: center;
        }
        .tips-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .tip-item {
            display: flex;
            gap: 16px;
            background: var(--white);
            border-radius: var(--radius);
            padding: 20px 22px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .tip-item:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .tip-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(27, 95, 156, .08);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            flex-shrink: 0;
        }
        .tip-item h3 {
            font-size: 15px;
            margin-bottom: 4px;
        }
        .tip-item p {
            font-size: 13px;
            color: var(--text-soft);
            line-height: 1.6;
        }
        .tips-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-hover);
            border: 4px solid var(--white);
        }
        .tips-image img {
            width: 100%;
            height: 340px;
            object-fit: cover;
        }

        /* FAQ */
        .faq {
            background: var(--white);
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            background: var(--bg);
            transition: var(--transition);
        }
        .faq-item.active {
            border-color: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            color: var(--text);
            text-align: left;
        }
        .faq-question i {
            font-size: 14px;
            transition: var(--transition);
            color: var(--primary);
        }
        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }
        .faq-answer-inner {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-soft);
            line-height: 1.8;
        }

        /* CTA */
        .cta {
            background: var(--bg);
            padding: 90px 0;
        }
        .cta-box {
            background: linear-gradient(120deg, var(--primary), var(--primary-dark));
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -30px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .05);
        }
        .cta-box::before {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -20px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .04);
        }
        .cta-box h2 {
            font-size: 28px;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            color: rgba(255, 255, 255, .8);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 15px;
            position: relative;
            z-index: 1;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .cta-actions .btn-primary {
            background: var(--accent);
            color: #16283b;
        }
        .cta-actions .btn-primary:hover {
            background: #f0c15e;
        }
        .cta-actions .btn-outline-light {
            border-color: rgba(255, 255, 255, .6);
            color: #fff;
        }

        /* Footer */
        .site-footer {
            background: #102a41;
            color: #a9bfd1;
            padding: 70px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1.2fr;
            gap: 44px;
            padding-bottom: 40px;
        }
        .footer-brand .brand-logo {
            color: #fff;
        }
        .footer-brand .logo-mark {
            background: linear-gradient(135deg, var(--accent), #f0c15e);
            color: #16283b;
        }
        .footer-brand .logo-text {
            color: #fff;
        }
        .footer-text {
            margin-top: 16px;
            font-size: 14px;
            color: #8da5b8;
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-title {
            font-size: 16px;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
            color: #a9bfd1;
        }
        .footer-links a i {
            font-size: 11px;
            color: var(--accent);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-info p {
            font-size: 14px;
            display: flex;
            gap: 8px;
            align-items: center;
            margin-bottom: 12px;
            color: #a9bfd1;
        }
        .footer-info i {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: #6f8aa0;
        }
        .footer-bottom a {
            color: #a9bfd1;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-wrap {
                grid-template-columns: repeat(3, 1fr);
            }
            .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tips-wrap {
                grid-template-columns: 1fr;
                gap: 60px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .brand-inner {
                height: 60px;
            }
            .logo-text {
                font-size: 17px;
            }
            .search-box {
                display: none;
            }
            .page-banner {
                padding: 60px 0 70px;
            }
            .banner-content h1 {
                font-size: 32px;
            }
            .section {
                padding: 60px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .guide-grid,
            .scene-grid {
                grid-template-columns: 1fr;
            }
            .steps-wrap {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .error-item {
                flex-wrap: wrap;
                gap: 12px;
            }
            .cta-box {
                padding: 40px 24px;
            }
            .nav-inner {
                overflow-x: auto;
                gap: 2px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
            }
            .nav-inner::-webkit-scrollbar {
                display: none;
            }
            .nav-link {
                white-space: nowrap;
            }
        }
        @media (max-width: 520px) {
            .nav-link {
                padding: 8px 12px;
                font-size: 14px;
            }
            .banner-content h1 {
                font-size: 28px;
            }
            .banner-content p {
                font-size: 15px;
            }
            .logo-text {
                font-size: 16px;
            }
            .tips-wrap {
                gap: 30px;
            }
            .tips-image img {
                height: 240px;
            }
            .steps-wrap {
                gap: 14px;
            }
            .error-code {
                font-size: 22px;
                min-width: 48px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
        }

/* roulang page: category2 */
:root {
  --primary: #0e2a47;
  --primary-light: #1a3f66;
  --primary-soft: #e9eff7;
  --secondary: #2f7de1;
  --accent: #38bdf8;
  --accent-soft: #e0f2fe;
  --bg: #f4f6fb;
  --bg-soft: #e9eef5;
  --card-bg: #ffffff;
  --text: #16232e;
  --text-muted: #5b6b7a;
  --border: #dfe5ec;
  --radius: 18px;
  --radius-sm: 10px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 10px rgba(14,42,71,.06);
  --shadow-md: 0 14px 36px rgba(14,42,71,.10);
  --shadow-lg: 0 28px 60px rgba(14,42,71,.14);
  --header-h: 124px;
  --transition: all .28s cubic-bezier(.4,0,.2,1);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 20px;
  color: var(--primary);
}
.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  border-radius: 12px;
  box-shadow: 0 6px 16px rgba(47,125,225,.32);
}
.logo-text { letter-spacing: .5px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 24px rgba(14,42,71,.07);
}
.brand-bar { background: #fff; border-bottom: 1px solid rgba(223,229,236,.6); }
.brand-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 6px 4px 18px;
  width: 300px;
  transition: var(--transition);
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(56,189,248,.15);
  background: #fff;
}
.search-box input {
  flex: 1;
  border: none;
  background: transparent;
  font-size: 14px;
  color: var(--text);
  outline: none;
  min-width: 0;
}
.search-box button {
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  color: #fff;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.search-box button:hover { transform: scale(1.06); box-shadow: 0 4px 12px rgba(47,125,225,.35); }

.channel-nav {
  background: var(--primary);
  min-height: 52px;
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 52px;
  overflow-x: auto;
  scrollbar-width: none;
}
.channel-nav::-webkit-scrollbar { display: none; }
.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0 22px;
  height: 52px;
  color: rgba(255,255,255,.78);
  font-size: 15px;
  font-weight: 500;
  letter-spacing: .3px;
  border-bottom: 3px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link:hover {
  color: #fff;
  background: rgba(255,255,255,.06);
}
.nav-link.active {
  color: #fff;
  border-bottom-color: var(--accent);
  background: rgba(255,255,255,.08);
  font-weight: 600;
}

.hero-banner {
  position: relative;
  background: linear-gradient(120deg, rgba(14,42,71,.94), rgba(26,63,102,.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  padding: 96px 0 110px;
  overflow: hidden;
}
.hero-banner::after {
  content: "";
  position: absolute;
  right: -120px;
  bottom: -160px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(56,189,248,.25) 0%, transparent 70%);
  border-radius: 50%;
}
.hero-banner::before {
  content: "";
  position: absolute;
  left: 10%;
  bottom: 0;
  width: 260px;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), transparent);
}
.hero-inner { position: relative; z-index: 2; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(56,189,248,.16);
  border: 1px solid rgba(56,189,248,.35);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 22px;
  letter-spacing: .5px;
}
.hero-title {
  font-size: clamp(30px, 4.6vw, 48px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: 1px;
  margin-bottom: 18px;
  max-width: 720px;
}
.hero-title span {
  background: linear-gradient(90deg, var(--accent), #7dd3fc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-desc {
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255,255,255,.8);
  max-width: 640px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  border: none;
  transition: var(--transition);
  letter-spacing: .3px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  color: #fff;
  box-shadow: 0 8px 24px rgba(47,125,225,.35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(47,125,225,.45);
}
.btn-ghost {
  background: rgba(255,255,255,.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,.25);
  backdrop-filter: blur(6px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.2);
  border-color: rgba(255,255,255,.45);
  transform: translateY(-2px);
}

.section {
  padding: 88px 0;
}
.section-head {
  max-width: 680px;
  margin-bottom: 52px;
}
.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--secondary);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-head h2 {
  font-size: clamp(26px, 3.2vw, 36px);
  font-weight: 800;
  line-height: 1.35;
  color: var(--primary);
  margin-bottom: 14px;
  letter-spacing: .5px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
}

.feature-section { background: #fff; }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}
.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
  background: #fff;
}
.feature-card:hover .feature-icon { transform: scale(1.08) rotate(-3deg); }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  transition: var(--transition);
}
.feature-icon.teal {
  background: #d5f0f0;
  color: #0e9aa0;
}
.feature-icon.blue {
  background: var(--primary-soft);
  color: var(--secondary);
}
.feature-icon.orange {
  background: #fde8d7;
  color: #ea8a2e;
}
.feature-icon.green {
  background: #dff3e0;
  color: #3ba55d;
}
.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--primary);
}
.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.75;
}

.process-section { background: var(--bg); }
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}
.process-item {
  background: #fff;
  border-radius: var(--radius);
  padding: 34px 28px;
  border: 1px solid var(--border);
  position: relative;
  transition: var(--transition);
}
.process-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.process-item::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 4px 12px;
  border-radius: 999px;
  display: inline-block;
  margin-bottom: 18px;
}
.process-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.process-item p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

.category-section { background: #fff; }
.category-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
}
.category-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.category-cover {
  position: relative;
  height: 180px;
  overflow: hidden;
}
.category-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}
.category-card:hover .category-cover img { transform: scale(1.06); }
.category-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(14,42,71,.35));
}
.category-body {
  padding: 26px 24px 28px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.category-text { margin-bottom: 16px; }
.category-text h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}
.category-text p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}
.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: var(--bg);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.category-card:hover .tag {
  background: var(--primary-soft);
  border-color: transparent;
  color: var(--primary);
}
.category-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--secondary);
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.category-link i { transition: var(--transition); }
.category-link:hover { color: var(--primary); }
.category-link:hover i { transform: translateX(5px); }

.stats-band {
  position: relative;
  background: linear-gradient(130deg, var(--primary) 0%, var(--primary-light) 55%, #1d4d7a 100%);
  color: #fff;
  padding: 80px 0;
  overflow: hidden;
}
.stats-band::before {
  content: "";
  position: absolute;
  top: -100px;
  right: -80px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(56,189,248,.18), transparent 70%);
}
.stats-band::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent 80%);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  position: relative;
  z-index: 2;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--accent), #7dd3fc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 15px;
  color: rgba(255,255,255,.72);
  letter-spacing: .5px;
}
.stat-item i {
  font-size: 22px;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}

.faq-section { background: var(--bg); }
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-sm); }
.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 22px 28px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  list-style: none;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i {
  font-size: 14px;
  color: var(--secondary);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item[open] summary { color: var(--secondary); }
.faq-item[open] summary i { transform: rotate(180deg); }
.faq-body {
  padding: 0 28px 24px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.85;
}

.cta-section {
  background: linear-gradient(135deg, var(--secondary), var(--accent));
  position: relative;
  overflow: hidden;
  padding: 72px 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 280px;
  background: rgba(255,255,255,.08);
  border-radius: 50%;
  transform: translate(40%, -40%);
}
.cta-box {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-info h2 {
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 800;
  color: #fff;
  margin-bottom: 8px;
}
.cta-info p {
  color: rgba(255,255,255,.85);
  font-size: 15px;
}
.cta-btn {
  background: #fff;
  color: var(--secondary);
  font-weight: 700;
  padding: 14px 34px;
  border-radius: 999px;
  font-size: 15px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0,0,0,.15);
}
.cta-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 36px rgba(0,0,0,.2);
}

.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,.8);
  padding: 72px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .brand-logo {
  color: #fff;
  margin-bottom: 18px;
}
.footer-brand .logo-mark {
  background: linear-gradient(135deg, var(--secondary), var(--accent));
}
.footer-brand .logo-text { color: #fff; }
.footer-text {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255,255,255,.65);
  max-width: 320px;
}
.footer-title {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
  position: relative;
  padding-bottom: 12px;
}
.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-links {
  padding-top: 12px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,.65);
  font-size: 14px;
  transition: var(--transition);
}
.footer-links a i {
  font-size: 11px;
  color: var(--accent);
  transition: var(--transition);
}
.footer-links a:hover {
  color: #fff;
  padding-left: 4px;
}
.footer-links a:hover i { transform: translateX(2px); }
.footer-info { padding-top: 12px; }
.footer-info p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,.65);
  margin-bottom: 8px;
  line-height: 1.6;
}
.footer-info p i {
  color: var(--accent);
  margin-top: 4px;
  font-size: 14px;
}
.footer-bottom {
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,.5);
}
.footer-bottom a {
  color: rgba(255,255,255,.7);
  transition: var(--transition);
}
.footer-bottom a:hover { color: var(--accent); }

@media (max-width: 1024px) {
  .hero-banner { padding: 80px 0 90px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .brand-bar { min-height: 64px; }
  .brand-inner { min-height: 64px; flex-direction: column; align-items: flex-start; gap: 12px; padding: 14px 24px; }
  .search-box { width: 100%; }
  .nav-inner { min-height: 48px; }
  .nav-link { height: 48px; padding: 0 16px; font-size: 14px; }
  .hero-banner { padding: 64px 0 76px; }
  .section { padding: 64px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .hero-banner { padding: 52px 0 64px; }
  .hero-title { font-size: 28px; }
  .hero-desc { font-size: 15px; }
  .feature-grid,
  .category-grid,
  .process-grid,
  .stats-grid { grid-template-columns: 1fr; }
  .btn { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; width: 100%; }
  .faq-item summary { padding: 18px 20px; font-size: 15px; }
  .faq-body { padding: 0 20px 20px; }
  .footer-brand .logo-text { font-size: 18px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}