/* roulang page: index */
:root {
  --c-primary: #2B6FB6;
  --c-primary-dark: #1D5588;
  --c-primary-light: #E7F0FA;
  --c-accent: #F08A3C;
  --c-accent-dark: #D97726;
  --c-bg: #F6F9FC;
  --c-card: #FFFFFF;
  --c-text: #1F2D3D;
  --c-muted: #61758A;
  --c-border: #E1E9F2;
  --radius-card: 16px;
  --radius-btn: 10px;
  --shadow-card: 0 2px 8px rgba(27,56,89,.06), 0 10px 24px rgba(27,56,89,.05);
  --shadow-card-hover: 0 4px 12px rgba(27,56,89,.10), 0 16px 32px rgba(27,56,89,.08);
  --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.7;
  padding-bottom: 56px;
  -webkit-font-smoothing: antialiased;
}
@media (min-width: 1024px) {
  body { padding-bottom: 0; }
}
img { display: block; max-width: 100%; height: auto; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, select, textarea { font-family: inherit; }
:focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
@media (min-width: 768px) {
  .container { padding: 0 40px; }
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  white-space: nowrap;
  transition: transform .2s ease, background .2s ease, box-shadow .2s ease, color .2s ease;
}
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: 0 4px 12px rgba(43,111,182,.2); }
.btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(43,111,182,.28); }
.btn-primary:active { transform: translateY(0); }
.btn-accent { background: var(--c-accent); color: #fff; box-shadow: 0 4px 12px rgba(240,138,60,.22); }
.btn-accent:hover { background: var(--c-accent-dark); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(240,138,60,.3); }
.btn-accent:active { transform: translateY(0); }
.btn-outline { background: #fff; color: var(--c-primary); border: 1px solid var(--c-primary); }
.btn-outline:hover { background: var(--c-primary-light); transform: translateY(-1px); }
.btn-outline:active { transform: translateY(0); }
.btn-outline-light { background: rgba(255,255,255,.1); color: #fff; border: 1px solid rgba(255,255,255,.7); }
.btn-outline-light:hover { background: rgba(255,255,255,.22); transform: translateY(-1px); }
.btn-lg { height: 52px; padding: 0 32px; font-size: 16px; border-radius: 10px; }

/* ===== 页头导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 64px;
  background: #fff;
  border-bottom: 1px solid var(--c-border);
}
@media (max-width: 767px) {
  .site-header { height: 56px; }
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 20px;
}
.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--c-primary-dark);
  letter-spacing: .5px;
  white-space: nowrap;
}
.desktop-nav { display: none; align-items: center; gap: 36px; }
@media (min-width: 768px) {
  .desktop-nav { display: flex; }
}
.nav-link {
  font-size: 15px;
  color: var(--c-text);
  padding: 8px 0;
  border-bottom: 2px solid transparent;
  transition: color .2s, border-color .2s;
}
.nav-link:hover { color: var(--c-primary); }
.nav-link.active { color: var(--c-primary); font-weight: 600; border-bottom-color: var(--c-primary); }
.header-right { display: flex; align-items: center; gap: 16px; }
.header-cta { display: none; }
@media (min-width: 1024px) {
  .header-cta { display: inline-flex; }
}
.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  color: var(--c-text);
  transition: background .2s;
}
.mobile-menu-btn:hover { background: var(--c-primary-light); }
.mobile-menu-btn svg { width: 22px; height: 22px; }
@media (min-width: 768px) {
  .mobile-menu-btn { display: none; }
}
.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--c-border);
  box-shadow: 0 12px 28px rgba(27,56,89,.08);
  padding: 8px 0;
}
.mobile-menu.open { display: block; }
.mobile-menu-link {
  display: block;
  padding: 13px 24px;
  font-size: 15px;
  color: var(--c-text);
  border-left: 3px solid transparent;
  transition: background .2s, color .2s;
}
.mobile-menu-link:hover,
.mobile-menu-link.active { background: var(--c-primary-light); color: var(--c-primary); border-left-color: var(--c-primary); }

/* ===== 移动端底部导航 ===== */
.mobile-tabbar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 56px;
  display: flex;
  background: #fff;
  border-top: 1px solid var(--c-border);
  z-index: 100;
}
.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  font-size: 11px;
  color: var(--c-muted);
  transition: color .2s;
}
.tab-item.active { color: var(--c-primary); font-weight: 600; }
.tab-icon { width: 22px; height: 22px; }
@media (min-width: 1024px) {
  .mobile-tabbar { display: none; }
}

/* ===== 倒计时条 ===== */
.countdown-bar {
  background: var(--c-primary);
  color: #fff;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.countdown-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  width: 100%;
  flex-wrap: wrap;
}
.countdown-left { display: flex; align-items: center; gap: 12px; font-size: 14px; flex-wrap: wrap; }
.countdown-label { opacity: .92; }
.countdown-timer { font-weight: 700; font-variant-numeric: tabular-nums; letter-spacing: 1px; }
.countdown-btn {
  background: #fff;
  color: var(--c-primary);
  padding: 5px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: transform .2s, background .2s;
}
.countdown-btn:hover { transform: translateY(-1px); background: var(--c-primary-light); }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(180deg, #EEF5FC 0%, var(--c-bg) 100%);
  overflow: hidden;
  position: relative;
}
.hero-inner {
  display: flex;
  flex-direction: column;
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 64px;
}
@media (min-width: 768px) {
  .hero-inner {
    display: grid;
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
    gap: 56px;
    padding-top: 80px;
    padding-bottom: 80px;
  }
}
.hero-badge {
  display: inline-block;
  background: rgba(43,111,182,.1);
  color: var(--c-primary);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-text);
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 16px;
  color: var(--c-muted);
  max-width: 480px;
  margin-bottom: 32px;
  line-height: 1.75;
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.hero-trust { font-size: 13px; color: var(--c-muted); display: flex; align-items: center; gap: 6px; }
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; min-height: 280px; }
.hero-circle {
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(43,111,182,.12) 0%, rgba(43,111,182,.02) 70%);
}
@media (max-width: 767px) {
  .hero-circle { width: 280px; height: 280px; }
}
.hero-img-wrap {
  position: relative;
  z-index: 1;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow-card-hover);
  width: 100%;
  max-width: 480px;
}
.hero-img-wrap img { width: 100%; }

/* ===== 统计条 ===== */
.stats-bar {
  background: #fff;
  border-top: 1px solid var(--c-border);
  border-bottom: 1px solid var(--c-border);
  padding: 32px 0;
}
.stats-inner {
  display: flex;
  justify-content: space-around;
  gap: 24px;
  flex-wrap: wrap;
}
.stat-item { text-align: center; min-width: 140px; }
.stat-num { display: block; font-size: 30px; font-weight: 700; color: var(--c-primary); line-height: 1.25; font-variant-numeric: tabular-nums; }
.stat-label { font-size: 14px; color: var(--c-muted); }

/* ===== 通用区块 ===== */
.section { padding: 72px 0; }
@media (min-width: 1024px) {
  .section { padding: 88px 0; }
}
.section-head {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 40px;
}
.section-tag {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--c-text);
}
.section-head p { color: var(--c-muted); font-size: 15px; margin-top: 8px; }
.left-head {
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: flex-start;
  align-items: flex-start;
  max-width: 100%;
  margin-bottom: 32px;
  text-align: left;
}
@media (min-width: 768px) {
  .left-head {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}
.left-head h2 { margin-bottom: 0; }
.left-head p { margin-top: 4px; margin-bottom: 0; }

/* ===== 卖点区 ===== */
.features-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}
@media (min-width: 1024px) {
  .features-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
.feature-block {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 32px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.feature-block:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.feature-num {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  color: var(--c-primary-light);
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.feature-icon svg { width: 24px; height: 24px; }
.feature-block h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
.feature-block p { font-size: 14px; color: var(--c-muted); line-height: 1.7; }
@media (min-width: 1024px) {
  .feature-block:nth-child(2) { transform: translateY(40px); }
  .feature-block:nth-child(2):hover { transform: translateY(37px); box-shadow: var(--shadow-card-hover); }
}
.feature-wide { grid-column: 1 / -1; }
@media (min-width: 768px) {
  .feature-wide-inner {
    display: flex;
    align-items: flex-start;
    gap: 28px;
  }
  .feature-wide .feature-num { margin-bottom: 8px; }
}

/* ===== 图墙 ===== */
.gallery-section { background: #fff; }
.gallery-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: minmax(180px, auto);
    gap: 20px;
  }
  .gallery-large { grid-column: span 2; grid-row: span 2; }
  .gallery-wide { grid-column: span 2; }
  .gallery-item { min-height: 180px; }
  .gallery-large { min-height: 400px; }
}
.gallery-item {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  min-height: 200px;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .45s ease;
}
.gallery-item:hover img { transform: scale(1.04); }
.gallery-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(15,23,42,.55);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(4px);
}
.gallery-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg, rgba(15,23,42,0) 42%, rgba(15,23,42,.62) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 24px;
  transition: background .3s;
}
.gallery-overlay h3 { color: #fff; font-size: 16px; font-weight: 600; }
.gallery-overlay p { color: rgba(255,255,255,.88); font-size: 13px; margin-top: 4px; }

/* ===== 预约卡片 ===== */
.appointment {
  background: var(--c-primary-light);
  padding: 72px 0;
}
@media (min-width: 1024px) {
  .appointment { padding: 88px 0; }
}
.appointment-card {
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  border-radius: 20px;
  padding: 40px 28px;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--c-border);
  text-align: center;
}
@media (min-width: 768px) {
  .appointment-card { padding: 48px 40px; }
}
.appointment-head h2 { font-size: 26px; font-weight: 700; margin-bottom: 8px; }
.appointment-head p { color: var(--c-muted); margin-bottom: 32px; }
.appointment-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  text-align: left;
  max-width: 560px;
  margin: 0 auto;
}
@media (min-width: 640px) {
  .appointment-form { grid-template-columns: 1fr 1fr; }
}
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 13px; color: var(--c-text); font-weight: 600; }
.form-group input,
.form-group select {
  height: 44px;
  border: 1px solid #D6E2EE;
  border-radius: 8px;
  padding: 0 14px;
  font-size: 14px;
  color: var(--c-text);
  background: #fff;
  width: 100%;
  transition: border-color .2s;
}
.form-group input:focus,
.form-group select:focus {
  outline: 2px solid var(--c-primary);
  outline-offset: 2px;
  border-color: var(--c-primary);
}
.appointment-form .btn-submit { grid-column: auto; margin-top: 8px; }
@media (min-width: 640px) {
  .appointment-form .btn-submit { grid-column: 1 / -1; }
}
.form-note {
  grid-column: 1 / -1;
  text-align: center;
  font-size: 12px;
  color: var(--c-muted);
  margin-top: 4px;
}
.form-feedback {
  display: none;
  grid-column: 1 / -1;
  padding: 12px;
  border-radius: 8px;
  background: rgba(46,158,107,.1);
  color: #2E9E6B;
  font-size: 14px;
  text-align: center;
}
.form-feedback.show { display: block; }

/* ===== FAQ ===== */
.faq-section { background: #fff; }
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: var(--c-card);
  border: 1px solid var(--c-border);
  border-radius: 14px;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow .2s;
}
.faq-item:hover { box-shadow: var(--shadow-card-hover); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  width: 100%;
  min-height: 56px;
  padding: 16px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--c-text);
  text-align: left;
  transition: background .2s;
}
.faq-question:hover { background: var(--c-primary-light); }
.faq-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--c-primary-light);
  color: var(--c-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 18px;
  transition: transform .25s;
}
.faq-question[aria-expanded="true"] .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .28s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  font-size: 14px;
  color: var(--c-muted);
  line-height: 1.75;
}

/* ===== 最新信息 CMS ===== */
.latest-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
@media (min-width: 768px) {
  .latest-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .latest-grid { grid-template-columns: repeat(3, 1fr); }
}
.latest-card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  background: var(--c-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--c-border);
  box-shadow: var(--shadow-card);
  transition: transform .22s ease, box-shadow .22s ease;
  height: 100%;
}
.latest-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-card-hover); }
.latest-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.latest-card time { font-size: 13px; color: var(--c-muted); white-space: nowrap; }
.latest-card h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.45;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.latest-card p {
  font-size: 14px;
  color: var(--c-muted);
  line-height: 1.6;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.read-more {
  margin-top: auto;
  color: var(--c-primary);
  font-weight: 600;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap .2s;
}
.latest-card:hover .read-more { gap: 8px; }
.view-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--c-primary);
  font-weight: 600;
  font-size: 14px;
  padding: 8px 16px;
  border-radius: 8px;
  background: var(--c-primary-light);
  transition: background .2s, transform .2s;
}
.view-all:hover { background: #D9E8F8; transform: translateX(2px); }
.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 56px 24px;
  background: var(--c-card);
  border-radius: var(--radius-card);
  border: 1px dashed var(--c-border);
  color: var(--c-muted);
  font-size: 15px;
  text-align: center;
}
.badge-primary {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--c-primary-light);
  color: var(--c-primary);
  font-size: 12px;
  font-weight: 600;
}

/* ===== 最终 CTA ===== */
.final-cta {
  background: var(--c-primary-dark);
  padding: 72px 0;
}
@media (min-width: 1024px) {
  .final-cta { padding: 88px 0; }
}
.final-cta-inner {
  max-width: 680px;
  margin: 0 auto;
  text-align: center;
  color: #fff;
}
.final-cta-inner h2 { font-size: 28px; font-weight: 700; line-height: 1.3; margin-bottom: 12px; }
.final-cta-inner p { font-size: 15px; opacity: .88; margin-bottom: 28px; }
.final-cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

/* ===== 页脚 ===== */
.footer {
  background: #143049;
  color: rgba(255,255,255,.8);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
@media (min-width: 768px) {
  .footer-grid { grid-template-columns: 2fr 1fr 1fr 1fr; }
}
.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .5px;
}
.footer-brand p { font-size: 14px; line-height: 1.7; opacity: .75; margin-top: 12px; max-width: 280px; }
.footer h3 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 16px;
}
.footer-links a {
  display: block;
  padding: 4px 0;
  font-size: 14px;
  opacity: .75;
  transition: opacity .2s, color .2s;
}
.footer-links a:hover { opacity: 1; color: #fff; }
.footer-contact p { font-size: 14px; opacity: .75; line-height: 1.9; }
.footer-note p { font-size: 14px; opacity: .75; line-height: 1.8; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 16px 0;
  font-size: 13px;
  opacity: .7;
}
.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
}
.footer-bottom a:hover { opacity: 1; color: #fff; }

/* roulang page: article */
:root {
    --c-primary: #2B6FB6;
    --c-primary-dark: #1D5588;
    --c-primary-light: #E7F0FA;
    --c-accent: #F08A3C;
    --c-bg: #F6F9FC;
    --c-card: #FFFFFF;
    --c-text: #1F2D3D;
    --c-muted: #61758A;
    --c-faint: #9AA8B7;
    --c-border: #E1E9F2;
    --radius-card: 16px;
    --shadow-card: 0 2px 8px rgba(27,56,89,.06), 0 10px 24px rgba(27,56,89,.05);
    --shadow-card-hover: 0 4px 12px rgba(27,56,89,.10), 0 16px 32px rgba(27,56,89,.08);
  }
  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    background: var(--c-bg);
    color: var(--c-text);
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
  }
  img { display: block; max-width: 100%; height: auto; }
  a { text-decoration: none; color: inherit; transition: color .2s ease; }
  a:hover { color: var(--c-primary); }
  button { font-family: inherit; cursor: pointer; }
  input, textarea { font-family: inherit; }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 40px;
    padding-right: 40px;
  }

  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: #fff;
    border-bottom: 1px solid #E8EEF5;
    height: 64px;
  }
  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
  }
  .logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--c-primary);
    letter-spacing: .5px;
    white-space: nowrap;
  }
  .logo:hover { color: var(--c-primary-dark); }
  .desktop-nav {
    display: flex;
    align-items: center;
    gap: 36px;
  }
  .nav-link {
    font-size: 15px;
    font-weight: 500;
    color: #3A4D5E;
    padding: 6px 2px;
    position: relative;
  }
  .nav-link:hover { color: var(--c-primary); }
  .nav-link.active {
    color: var(--c-primary);
    font-weight: 600;
  }
  .nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 2px;
    background: var(--c-primary);
    border-radius: 2px;
  }
  .header-right { display: flex; align-items: center; gap: 16px; }

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 24px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    transition: all .2s ease;
    border: 1px solid transparent;
  }
  .btn-primary {
    background: var(--c-primary);
    color: #fff;
  }
  .btn-primary:hover {
    background: var(--c-primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(43,111,182,.22);
  }
  .btn-primary:active { transform: translateY(0); }
  .btn-outline {
    background: #fff;
    border-color: var(--c-primary);
    color: var(--c-primary);
  }
  .btn-outline:hover {
    background: var(--c-primary-light);
    color: var(--c-primary-dark);
  }
  .btn-accent {
    background: var(--c-accent);
    color: #fff;
  }
  .btn-accent:hover {
    background: #e07a28;
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(240,138,60,.25);
  }
  .header-cta { height: 40px; padding: 0 18px; font-size: 14px; }

  .mobile-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    background: var(--c-primary-light);
    border: none;
    border-radius: 10px;
    color: var(--c-primary);
  }
  .mobile-menu-btn svg { width: 20px; height: 20px; }

  .mobile-menu {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    z-index: 49;
    background: #fff;
    border-bottom: 1px solid var(--c-border);
    padding: 16px 20px;
    box-shadow: 0 16px 32px rgba(27,56,89,.08);
  }
  .mobile-menu.open { display: block; }
  .mobile-menu-link {
    display: block;
    padding: 12px 0;
    font-size: 16px;
    font-weight: 500;
    color: var(--c-text);
    border-bottom: 1px solid #F0F4F8;
  }
  .mobile-menu-link:last-child { border-bottom: none; }
  .mobile-menu-link.active { color: var(--c-primary); font-weight: 600; }

  .mobile-tabbar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 48;
    background: rgba(255,255,255,.96);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--c-border);
    height: 56px;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .tabbar-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    height: 56px;
  }
  .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-size: 12px;
    color: #7B8A9A;
    transition: color .2s ease;
  }
  .tab-item svg { width: 20px; height: 20px; }
  .tab-item.active { color: var(--c-primary); font-weight: 600; }
  .tab-item:hover { color: var(--c-primary); }

  .article-main {
    min-height: 70vh;
    padding: 56px 0 80px;
  }

  .breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--c-muted);
    margin-bottom: 36px;
  }
  .breadcrumb a { color: var(--c-muted); }
  .breadcrumb a:hover { color: var(--c-primary); }
  .breadcrumb .sep { color: #C2CEDC; }

  .article-header {
    max-width: 820px;
    margin: 0 auto 40px;
  }
  .article-category {
    display: inline-flex;
    align-items: center;
    background: var(--c-primary-light);
    color: var(--c-primary);
    font-size: 13px;
    font-weight: 600;
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 20px;
  }
  .article-title {
    font-size: 36px;
    line-height: 1.35;
    font-weight: 700;
    color: var(--c-text);
    margin: 0 0 20px;
    letter-spacing: .5px;
  }
  .article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 18px;
    font-size: 14px;
    color: var(--c-muted);
    padding-bottom: 24px;
    border-bottom: 1px solid var(--c-border);
  }
  .meta-item { display: flex; align-items: center; gap: 6px; }
  .meta-item svg { width: 16px; height: 16px; color: #B0BECA; }

  .article-body {
    max-width: 820px;
    margin: 0 auto;
    color: #2E3D4E;
    font-size: 16px;
    line-height: 1.8;
  }
  .article-body p {
    margin: 0 0 22px;
  }
  .article-body h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--c-text);
    margin: 40px 0 16px;
    padding-left: 14px;
    border-left: 4px solid var(--c-primary);
  }
  .article-body h3 {
    font-size: 19px;
    font-weight: 600;
    color: var(--c-text);
    margin: 32px 0 12px;
  }
  .article-body ul, .article-body ol {
    margin: 0 0 22px;
    padding-left: 22px;
  }
  .article-body li { margin-bottom: 8px; }
  .article-body blockquote {
    margin: 28px 0;
    padding: 18px 22px;
    background: var(--c-primary-light);
    border-radius: 12px;
    color: var(--c-primary-dark);
    border-left: 4px solid var(--c-primary);
  }
  .article-body img {
    border-radius: 14px;
    margin: 24px 0;
    box-shadow: var(--shadow-card);
  }
  .article-body figure { margin: 28px 0; }
  .article-body figcaption {
    font-size: 13px;
    color: var(--c-muted);
    text-align: center;
    margin-top: 8px;
  }
  .article-body a {
    color: var(--c-primary);
    font-weight: 600;
    border-bottom: 1px solid rgba(43,111,182,.3);
  }
  .article-body a:hover { border-color: var(--c-primary); }

  .article-footer {
    max-width: 820px;
    margin: 36px auto 0;
    padding-top: 24px;
    border-top: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
  }
  .back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary);
  }
  .back-link:hover { color: var(--c-primary-dark); }

  .related-section {
    max-width: 1080px;
    margin: 64px auto 0;
  }
  .related-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--c-text);
    margin: 0 0 28px;
    display: flex;
    align-items: center;
    gap: 12px;
  }
  .related-title::before {
    content: '';
    width: 28px;
    height: 4px;
    background: var(--c-accent);
    border-radius: 4px;
  }
  .related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .related-card {
    background: var(--c-card);
    border-radius: var(--radius-card);
    border: 1px solid #EDF2F7;
    box-shadow: var(--shadow-card);
    overflow: hidden;
    transition: transform .25s ease, box-shadow .25s ease;
  }
  .related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
  }
  .related-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    transition: transform .4s ease;
  }
  .related-card:hover img { transform: scale(1.04); }
  .related-card-body {
    padding: 20px 22px 22px;
  }
  .related-card-body h3 {
    margin: 0 0 10px;
    font-size: 17px;
    font-weight: 600;
    color: var(--c-text);
    line-height: 1.4;
  }
  .related-card-body p {
    margin: 0 0 16px;
    font-size: 14px;
    color: var(--c-muted);
    line-height: 1.6;
  }
  .related-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--c-primary);
  }

  .article-cta {
    max-width: 840px;
    margin: 64px auto 0;
    background: linear-gradient(135deg, #E7F0FA 0%, #F6F9FC 100%);
    border-radius: 20px;
    padding: 48px 40px;
    text-align: center;
    border: 1px solid #E1E9F2;
  }
  .article-cta h2 {
    margin: 0 0 12px;
    font-size: 26px;
    font-weight: 700;
    color: var(--c-text);
  }
  .article-cta p {
    margin: 0 auto 28px;
    font-size: 15px;
    color: var(--c-muted);
    max-width: 520px;
  }
  .cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
  }

  .not-found {
    max-width: 640px;
    margin: 120px auto;
    background: #fff;
    border-radius: 20px;
    padding: 64px 40px;
    text-align: center;
    box-shadow: var(--shadow-card);
  }
  .not-found h1 {
    font-size: 30px;
    font-weight: 700;
    margin: 0 0 16px;
  }
  .not-found p {
    color: var(--c-muted);
    margin: 0 0 28px;
  }

  .footer {
    background: #143049;
    color: #C6D5E4;
    margin-top: 0;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding: 64px 40px 48px;
  }
  .footer-logo {
    display: inline-block;
    font-size: 22px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 14px;
  }
  .footer-logo:hover { color: #fff; opacity: .9; }
  .footer-brand p {
    margin: 0;
    font-size: 14px;
    line-height: 1.7;
    color: #A8BCCD;
    max-width: 280px;
  }
  .footer h3 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 18px;
  }
  .footer-links a {
    display: block;
    color: #A8BCCD;
    font-size: 14px;
    margin-bottom: 12px;
    transition: color .2s ease;
  }
  .footer-links a:hover { color: #fff; }
  .footer-contact p {
    font-size: 14px;
    margin: 0 0 12px;
    color: #A8BCCD;
    line-height: 1.6;
  }
  .footer-note p {
    font-size: 14px;
    color: #A8BCCD;
    line-height: 1.7;
    margin: 0;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255,255,255,.08);
    padding: 20px 0;
  }
  .footer-bottom-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
  }
  .footer-bottom p {
    margin: 0;
    font-size: 13px;
    color: #8DA3B7;
  }
  .footer-bottom a {
    font-size: 13px;
    color: #8DA3B7;
  }
  .footer-bottom a:hover { color: #fff; }

  @media (max-width: 1024px) {
    .desktop-nav { display: none; }
    .mobile-menu-btn { display: flex; }
    .mobile-tabbar { display: block; }
    body { padding-bottom: 56px; }
    .site-header { height: 56px; }
    .header-inner { height: 56px; }
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      padding: 48px 20px 36px;
    }
    .related-grid { grid-template-columns: 1fr 1fr; }
  }

  @media (max-width: 768px) {
    .container { padding-left: 20px; padding-right: 20px; }
    .article-main { padding: 32px 0 56px; }
    .article-title { font-size: 27px; }
    .article-header, .article-body, .article-footer, .article-cta { max-width: 100%; }
    .related-grid { grid-template-columns: 1fr; }
    .article-cta { padding: 36px 24px; }
    .article-cta h2 { font-size: 22px; }
    .cta-actions { flex-direction: column; align-items: center; }
    .cta-actions .btn { width: 100%; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-brand p, .footer-note p { max-width: 100%; }
    .footer-bottom-inner { justify-content: center; text-align: center; }
    .header-cta { display: none; }
  }

  @media (max-width: 480px) {
    .article-title { font-size: 24px; }
    .breadcrumb { font-size: 13px; }
    .article-meta { gap: 12px; }
    .related-card img { height: 160px; }
  }

  @media (min-width: 1025px) {
    .mobile-tabbar { display: none !important; }
  }

  a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 2px solid var(--c-primary);
    outline-offset: 2px;
  }

/* roulang page: category1 */
:root {
      --c-primary: #2B6FB6;
      --c-primary-dark: #1D5588;
      --c-primary-light: #E7F0FA;
      --c-accent: #F08A3C;
      --c-accent-dark: #D9772C;
      --c-bg: #F6F9FC;
      --c-card: #FFFFFF;
      --c-text: #1F2D3D;
      --c-muted: #61758A;
      --c-border: #E1E9F2;
      --radius-card: 14px;
      --shadow-card: 0 2px 8px rgba(27,56,89,.06), 0 10px 24px rgba(27,56,89,.05);
      --shadow-card-hover: 0 4px 12px rgba(27,56,89,.10), 0 16px 32px rgba(27,56,89,.08);
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; background: var(--c-bg); color: var(--c-text); line-height: 1.7; -webkit-font-smoothing: antialiased; }
    img { display: block; max-width: 100%; height: auto; }
    a { text-decoration: none; color: inherit; }
    button { font-family: inherit; cursor: pointer; }
    :focus-visible { outline: 2px solid var(--c-primary); outline-offset: 2px; }

    .container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
    .section { padding: 88px 0; }

    /* Header */
    .site-header { position: sticky; top: 0; z-index: 100; height: 64px; background: #fff; border-bottom: 1px solid var(--c-border); display: flex; align-items: center; }
    .header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; }
    .logo { font-size: 22px; font-weight: 700; color: var(--c-primary); letter-spacing: -0.01em; }
    .desktop-nav { display: flex; gap: 32px; align-items: center; }
    .nav-link { font-size: 15px; color: var(--c-text); padding: 6px 0; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
    .nav-link:hover { color: var(--c-primary); }
    .nav-link.active { color: var(--c-primary); font-weight: 600; border-color: var(--c-primary); }
    .header-right { display: flex; align-items: center; gap: 12px; }
    .header-cta { white-space: nowrap; }
    .mobile-menu-btn { display: none; background: none; border: none; width: 40px; height: 40px; align-items: center; justify-content: center; color: var(--c-text); }
    .mobile-menu-btn svg { width: 24px; height: 24px; }

    .mobile-menu { display: none; position: fixed; top: 64px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--c-border); padding: 12px 20px 16px; z-index: 99; box-shadow: 0 12px 24px rgba(27,56,89,.06); }
    .mobile-menu.open { display: flex; flex-direction: column; gap: 2px; }
    .mobile-menu-link { padding: 13px 0; font-size: 16px; color: var(--c-text); border-bottom: 1px solid var(--c-border); }
    .mobile-menu-link:last-child { border-bottom: none; }
    .mobile-menu-link.active { color: var(--c-primary); font-weight: 600; }

    /* Buttons */
    .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 0 26px; border-radius: 9px; font-size: 15px; font-weight: 600; border: 1px solid transparent; transition: all .2s; }
    .btn-lg { height: 52px; padding: 0 32px; font-size: 16px; }
    .btn-primary { background: var(--c-primary); color: #fff; }
    .btn-primary:hover { background: var(--c-primary-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(43,111,182,.25); }
    .btn-primary:active { transform: translateY(0); }
    .btn-outline { background: #fff; color: var(--c-primary); border-color: var(--c-primary); }
    .btn-outline:hover { background: var(--c-primary-light); }
    .btn-accent { background: var(--c-accent); color: #fff; }
    .btn-accent:hover { background: var(--c-accent-dark); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(240,138,60,.3); }
    .btn-accent:active { transform: translateY(0); }

    /* Badge */
    .badge { display: inline-flex; align-items: center; padding: 5px 14px; font-size: 12px; font-weight: 600; border-radius: 999px; background: var(--c-primary-light); color: var(--c-primary); }
    .badge-accent { background: rgba(240,138,60,.15); color: var(--c-accent-dark); }

    /* Section head */
    .section-head { max-width: 680px; margin-bottom: 48px; }
    .section-eyebrow { display: inline-block; background: var(--c-primary-light); color: var(--c-primary); font-size: 13px; font-weight: 600; padding: 5px 14px; border-radius: 999px; margin-bottom: 14px; }
    .section-title { font-size: 28px; font-weight: 700; line-height: 1.3; margin-bottom: 12px; }
    .section-desc { color: var(--c-muted); font-size: 15px; }

    /* Page hero */
    .page-hero { padding: 80px 0 72px; background: linear-gradient(180deg, #EAF2FA 0%, var(--c-bg) 100%); position: relative; overflow: hidden; }
    .page-hero-inner { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: center; position: relative; z-index: 2; }
    .page-hero h1 { font-size: 38px; font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; margin: 18px 0 18px; }
    .page-hero .lead { font-size: 16px; color: var(--c-muted); max-width: 500px; margin-bottom: 32px; }
    .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 22px; }
    .hero-trust { font-size: 13px; color: var(--c-muted); display: flex; align-items: center; gap: 8px; }
    .hero-media { position: relative; }
    .hero-media img { border-radius: 18px; box-shadow: var(--shadow-card-hover); width: 100%; object-fit: cover; }
    .decor-circle { position: absolute; border-radius: 50%; background: rgba(43,111,182,.05); }
    .decor-1 { width: 240px; height: 240px; top: -80px; right: -60px; }
    .decor-2 { width: 120px; height: 120px; bottom: 20px; left: 30%; background: rgba(240,138,60,.05); }

    /* Advantage list */
    .adv-list { display: grid; gap: 28px; }
    .adv-item { display: grid; grid-template-columns: 72px 1fr; gap: 24px; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-card); padding: 28px; transition: box-shadow .25s, transform .25s; }
    .adv-item:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
    .adv-num { font-size: 36px; font-weight: 800; color: var(--c-primary-light); line-height: 1; letter-spacing: -0.02em; }
    .adv-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--c-primary-light); display: flex; align-items: center; justify-content: center; color: var(--c-primary); margin-bottom: 14px; }
    .adv-item h3 { font-size: 18px; font-weight: 600; margin-bottom: 8px; }
    .adv-item p { font-size: 14px; color: var(--c-muted); line-height: 1.7; }

    /* Event grid */
    .event-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
    .event-card { position: relative; border-radius: var(--radius-card); overflow: hidden; min-height: 220px; display: block; box-shadow: var(--shadow-card); }
    .event-card-lg { grid-column: span 2; }
    .event-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
    .event-card:hover img { transform: scale(1.04); }
    .event-overlay { position: absolute; left: 0; right: 0; bottom: 0; padding: 22px; background: linear-gradient(180deg, transparent, rgba(15,32,50,.75)); color: #fff; }
    .event-overlay h3 { font-size: 18px; font-weight: 600; margin-top: 8px; }
    .event-overlay p { font-size: 13px; color: rgba(255,255,255,.85); margin-top: 4px; }

    /* Steps */
    .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .step-card { padding: 32px 24px; background: #fff; border-radius: var(--radius-card); border: 1px solid var(--c-border); position: relative; transition: box-shadow .2s, transform .2s; }
    .step-card:hover { box-shadow: var(--shadow-card-hover); transform: translateY(-2px); }
    .step-num { font-size: 32px; font-weight: 800; color: var(--c-primary); opacity: .18; line-height: 1; }
    .step-card h3 { font-size: 17px; font-weight: 600; margin: 16px 0 8px; }
    .step-card p { font-size: 14px; color: var(--c-muted); line-height: 1.7; }

    /* Stats */
    .stats-section { padding: 64px 0; background: var(--c-primary); color: #fff; }
    .stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
    .stat-card { text-align: center; padding: 16px; }
    .stat-num { display: block; font-size: 36px; font-weight: 800; font-variant-numeric: tabular-nums; margin-bottom: 6px; letter-spacing: -0.02em; }
    .stat-label { font-size: 14px; opacity: .85; }

    /* FAQ */
    .faq-list { max-width: 820px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
    .faq-item { background: #fff; border: 1px solid var(--c-border); border-radius: 14px; overflow: hidden; transition: box-shadow .2s; }
    .faq-item.active { box-shadow: var(--shadow-card); }
    .faq-question { display: flex; align-items: center; justify-content: space-between; width: 100%; gap: 16px; padding: 20px 24px; background: none; border: none; font-size: 16px; font-weight: 600; text-align: left; color: var(--c-text); }
    .faq-question:hover { color: var(--c-primary); }
    .faq-icon { width: 24px; height: 24px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--c-primary-light); color: var(--c-primary); transition: transform .2s; font-size: 18px; }
    .faq-item.active .faq-icon { transform: rotate(45deg); }
    .faq-answer { max-height: 0; overflow: hidden; transition: max-height .25s ease; }
    .faq-answer-inner { padding: 0 24px 22px; font-size: 14px; color: var(--c-muted); line-height: 1.75; }

    /* CTA */
    .cta-section { background: var(--c-primary-light); }
    .cta-card { max-width: 800px; margin: 0 auto; text-align: center; background: #fff; border-radius: 20px; box-shadow: var(--shadow-card); padding: 64px 48px; }
    .cta-card h2 { font-size: 30px; font-weight: 700; margin-bottom: 14px; }
    .cta-card p { color: var(--c-muted); font-size: 15px; margin-bottom: 28px; max-width: 520px; margin-left: auto; margin-right: auto; }

    /* Footer */
    .footer { background: #143049; color: rgba(255,255,255,.85); padding-top: 64px; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 48px; }
    .footer-logo { font-size: 24px; font-weight: 700; color: #fff; }
    .footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.7; color: rgba(255,255,255,.65); max-width: 280px; }
    .footer h3 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
    .footer-links a, .footer-contact p, .footer-note p { display: block; margin-bottom: 10px; font-size: 14px; color: rgba(255,255,255,.7); }
    .footer-links a:hover { color: #fff; text-decoration: underline; }
    .footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding: 20px 0; }
    .footer-bottom-inner { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: rgba(255,255,255,.55); }
    .footer-bottom-inner a:hover { color: #fff; text-decoration: underline; }

    /* Mobile Tab Bar */
    .tab-bar { display: none; position: fixed; left: 0; right: 0; bottom: 0; height: 56px; background: #fff; border-top: 1px solid var(--c-border); z-index: 100; align-items: center; justify-content: space-around; }
    .tab-item { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px; font-size: 11px; color: var(--c-muted); flex: 1; height: 100%; }
    .tab-item svg { width: 22px; height: 22px; }
    .tab-item.active { color: var(--c-primary); font-weight: 600; }

    /* Responsive */
    @media (max-width: 1023px) {
      .desktop-nav { display: none; }
      .mobile-menu-btn { display: inline-flex; }
      .header-cta { display: none; }
      .page-hero-inner { grid-template-columns: 1fr; gap: 40px; }
      .page-hero h1 { font-size: 32px; }
      .steps-grid { grid-template-columns: repeat(2, 1fr); }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
      .event-grid { grid-template-columns: repeat(2, 1fr); }
      .event-card-lg { grid-column: span 2; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .tab-bar { display: flex; }
      body { padding-bottom: 56px; }
    }
    @media (max-width: 767px) {
      .container { padding: 0 20px; }
      .section { padding: 64px 0; }
      .site-header { height: 56px; }
      .mobile-menu { top: 56px; }
      .logo { font-size: 20px; }
      .page-hero { padding: 48px 0 56px; }
      .page-hero h1 { font-size: 28px; }
      .hero-actions { flex-direction: column; align-items: stretch; }
      .hero-actions .btn { width: 100%; }
      .adv-item { grid-template-columns: 1fr; padding: 24px; }
      .adv-num { font-size: 28px; }
      .steps-grid { grid-template-columns: 1fr; }
      .stats-grid { grid-template-columns: 1fr 1fr; gap: 16px; }
      .stat-num { font-size: 28px; }
      .event-grid { grid-template-columns: 1fr; }
      .event-card-lg { grid-column: span 1; }
      .event-card { min-height: 200px; }
      .cta-card { padding: 40px 24px; }
      .cta-card h2 { font-size: 24px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .footer-bottom-inner { flex-direction: column; gap: 8px; text-align: center; }
      .section-head { margin-bottom: 32px; }
      .section-title { font-size: 24px; }
    }

/* roulang page: category2 */
:root {
            --c-primary: #2B6FB6;
            --c-primary-dark: #1D5588;
            --c-primary-light: #E7F0FA;
            --c-accent: #F08A3C;
            --c-accent-dark: #D9772B;
            --c-bg: #F6F9FC;
            --c-card: #FFFFFF;
            --c-text: #1F2D3D;
            --c-muted: #61758A;
            --c-border: #E1E9F2;
            --c-success: #2E9E6B;
            --c-danger: #D9534F;
            --radius-card: 14px;
            --shadow-card: 0 2px 8px rgba(27, 56, 89, .06), 0 10px 24px rgba(27, 56, 89, .05);
            --shadow-card-hover: 0 4px 12px rgba(27, 56, 89, .10), 0 16px 32px rgba(27, 56, 89, .08);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--c-bg);
            color: var(--c-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
        }

        /* ---------- header ---------- */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #fff;
            border-bottom: 1px solid var(--c-border);
            height: 64px;
            display: flex;
            align-items: center;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--c-primary);
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--c-primary-dark);
        }
        .desktop-nav {
            display: flex;
            gap: 28px;
            align-items: center;
        }
        .nav-link {
            font-size: .95rem;
            color: var(--c-muted);
            padding: 8px 4px;
            border-bottom: 2px solid transparent;
            transition: color .2s, border-color .2s;
        }
        .nav-link:hover {
            color: var(--c-primary);
        }
        .nav-link.active {
            color: var(--c-primary);
            font-weight: 600;
            border-bottom-color: var(--c-primary);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 44px;
            padding: 0 24px;
            border-radius: 8px;
            font-size: .95rem;
            font-weight: 500;
            transition: all .2s ease;
            cursor: pointer;
            border: 1px solid transparent;
            line-height: 1;
        }
        .btn-primary {
            background: var(--c-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--c-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 16px rgba(43, 111, 182, .2);
        }
        .btn-outline {
            background: #fff;
            border-color: var(--c-primary);
            color: var(--c-primary);
        }
        .btn-outline:hover {
            background: var(--c-primary-light);
        }
        .btn-accent {
            background: var(--c-accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--c-accent-dark);
            transform: translateY(-1px);
            box-shadow: 0 8px 16px rgba(240, 138, 60, .25);
        }
        .header-cta {
            height: 40px;
            padding: 0 20px;
            font-size: .9rem;
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            align-items: center;
            justify-content: center;
            color: var(--c-text);
            cursor: pointer;
        }
        .mobile-menu-btn svg {
            width: 24px;
            height: 24px;
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            background: #fff;
            padding: 16px 20px 24px;
            box-shadow: 0 12px 24px rgba(27, 56, 89, .08);
            z-index: 49;
            border-bottom: 1px solid var(--c-border);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu-link {
            display: block;
            padding: 12px 0;
            font-size: 1rem;
            color: var(--c-text);
            border-bottom: 1px solid #f0f4f8;
        }
        .mobile-menu-link:last-child {
            border-bottom: none;
        }
        .mobile-menu-link.active {
            color: var(--c-primary);
            font-weight: 600;
        }

        /* ---------- bottom tab ---------- */
        .bottom-tab {
            display: none;
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 50;
            height: 56px;
            background: #fff;
            border-top: 1px solid var(--c-border);
            align-items: center;
            justify-content: space-around;
            padding: 0 8px;
        }
        .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 2px;
            font-size: 11px;
            color: var(--c-muted);
            flex: 1;
            height: 100%;
            transition: color .2s;
        }
        .tab-item svg {
            width: 22px;
            height: 22px;
        }
        .tab-item.active {
            color: var(--c-primary);
            font-weight: 600;
        }
        .tab-item:hover {
            color: var(--c-primary);
        }
        @media (max-width: 1024px) {
            .bottom-tab {
                display: flex;
            }
            body {
                padding-bottom: 64px;
            }
        }
        @media (max-width: 767px) {
            .desktop-nav {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .header-cta {
                display: none;
            }
        }

        /* ---------- footer ---------- */
        .footer {
            background: #143049;
            color: #c7d5e0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding: 64px 40px;
            max-width: 1200px;
            margin: 0 auto;
        }
        .footer-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            display: inline-block;
            margin-bottom: 12px;
        }
        .footer-logo:hover {
            color: #fff;
            opacity: .9;
        }
        .footer-brand p {
            font-size: .9rem;
            line-height: 1.7;
            color: #a5b8c7;
        }
        .footer-links h3,
        .footer-contact h3,
        .footer-note h3 {
            font-size: .95rem;
            color: #fff;
            margin-bottom: 16px;
            font-weight: 600;
        }
        .footer-links a {
            display: block;
            font-size: .9rem;
            color: #a5b8c7;
            margin-bottom: 10px;
            transition: color .2s;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .footer-contact p,
        .footer-note p {
            font-size: .9rem;
            color: #a5b8c7;
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding: 20px 0;
        }
        .footer-bottom-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: .85rem;
            color: #8da3b5;
        }
        .footer-bottom-inner a {
            color: #8da3b5;
            transition: color .2s;
        }
        .footer-bottom-inner a:hover {
            color: #fff;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
                padding: 48px 20px;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom-inner {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }

        /* ---------- focus ---------- */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--c-primary);
            outline-offset: 2px;
        }

        /* ---------- page hero ---------- */
        .page-hero {
            background: linear-gradient(135deg, #E7F0FA 0%, #F6F9FC 60%, #fff 100%);
        }
        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: #fff;
            border: 1px solid var(--c-border);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: .85rem;
            color: var(--c-primary);
            font-weight: 500;
        }
        .page-hero-title {
            font-size: 2.5rem;
            font-weight: 700;
            line-height: 1.25;
            color: var(--c-text);
        }
        .page-hero-sub {
            font-size: 1rem;
            color: var(--c-muted);
        }

        /* ---------- section ---------- */
        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--c-text);
        }
        .section-subtitle {
            font-size: .95rem;
            color: var(--c-muted);
        }

        /* ---------- feature ---------- */
        .feature-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .feature-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--c-primary-light);
            line-height: 1;
            flex-shrink: 0;
            min-width: 44px;
        }

        /* ---------- cards ---------- */
        .content-card {
            background: #fff;
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: transform .25s, box-shadow .25s;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .img-overlay {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
        }
        .img-overlay img {
            transition: transform .4s ease;
            width: 100%;
            object-fit: cover;
        }
        .img-overlay:hover img {
            transform: scale(1.03);
        }
        .img-tag {
            position: absolute;
            left: 14px;
            bottom: 14px;
            background: rgba(20, 48, 73, .82);
            color: #fff;
            font-size: .8rem;
            padding: 4px 12px;
            border-radius: 6px;
            z-index: 2;
        }

        /* ---------- scene ---------- */
        .scene-item {
            background: #fff;
            border: 1px solid var(--c-border);
            border-radius: 12px;
            padding: 20px 24px;
            transition: transform .2s, box-shadow .2s, border-color .2s;
        }
        .scene-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
            border-color: rgba(43, 111, 182, .2);
        }

        /* ---------- faq ---------- */
        .faq-item {
            background: #fff;
            border-radius: 12px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--c-border);
            overflow: hidden;
            margin-bottom: 12px;
        }
        .faq-btn {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 20px;
            font-size: 1rem;
            font-weight: 500;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-family: inherit;
            color: var(--c-text);
            gap: 16px;
        }
        .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform .25s ease;
            color: var(--c-primary);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-panel {
            max-height: 0;
            overflow: hidden;
            transition: max-height .25s ease;
        }
        .faq-item.open .faq-panel {
            max-height: 500px;
        }
        .faq-answer {
            padding: 0 20px 18px;
            font-size: .9rem;
            color: var(--c-muted);
            line-height: 1.8;
        }

        /* ---------- cta ---------- */
        .cta-section {
            background: var(--c-primary-light);
        }
        .cta-panel {
            max-width: 820px;
            margin: 0 auto;
            background: #fff;
            border-radius: 16px;
            box-shadow: var(--shadow-card);
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 440px;
            margin: 20px auto 0;
        }
        .subscribe-form input {
            flex: 1;
            height: 46px;
            padding: 0 16px;
            border: 1px solid #D6E2EE;
            border-radius: 8px;
            font-size: .9rem;
            font-family: inherit;
            color: var(--c-text);
            background: #fff;
            transition: border-color .2s, box-shadow .2s;
        }
        .subscribe-form input:focus {
            outline: none;
            border-color: var(--c-primary);
            box-shadow: 0 0 0 2px rgba(43, 111, 182, .15);
        }
        @media (max-width: 520px) {
            .subscribe-form {
                flex-direction: column;
            }
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--c-primary);
            font-variant-numeric: tabular-nums;
        }

        /* hero image decorative */
        .hero-deco {
            position: absolute;
            border-radius: 50%;
            background: rgba(43, 111, 182, .06);
            pointer-events: none;
        }