/* roulang page: index */
:root {
  --primary: #0d1f2e;
  --primary-light: #1a3550;
  --primary-dark: #060e16;
  --accent: #f0a500;
  --accent-hover: #d18e00;
  --accent-soft: #fff6e0;
  --bg: #f5f7fb;
  --bg-white: #ffffff;
  --bg-dark: #0d1f2e;
  --text: #1b2736;
  --text-weak: #62758a;
  --text-light: #f6f9fc;
  --border: #e4eaf1;
  --radius: 18px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 12px rgba(13,31,46,0.06);
  --shadow: 0 8px 32px rgba(13,31,46,0.09);
  --shadow-lg: 0 18px 50px rgba(13,31,46,0.14);
  --transition: all .3s cubic-bezier(.25,.46,.45,.94);
  --container-w: 1200px;
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "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-base); color: var(--text); background: var(--bg); line-height: 1.7; font-size: 16px; overflow-x: hidden; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; outline: none; }
ul, ol { list-style: none; }
.container { max-width: var(--container-w); margin: 0 auto; padding: 0 24px; }

/* ========= Header & Navigation ========= */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(228,234,241,0.7);
  transition: var(--transition);
}
.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background: rgba(255,255,255,0.97);
}
.header-inner {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  gap: 16px;
}
.brand {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--primary);
  text-align: center;
  white-space: nowrap;
}
.brand span {
  color: var(--accent);
}
.brand em {
  font-style: normal;
  display: block;
  font-size: 11px;
  letter-spacing: 3px;
  font-weight: 500;
  color: var(--text-weak);
  margin-top: 2px;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-left { justify-content: flex-end; }
.nav-right { justify-content: flex-start; }
.nav-left a, .nav-right a {
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  position: relative;
  white-space: nowrap;
}
.nav-left a:hover, .nav-right a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}
.nav-left a.active, .nav-right a.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-left a.active::after, .nav-right a.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.menu-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border-radius: 10px;
  color: var(--primary);
}
.menu-toggle:hover { background: var(--bg); }

/* ========= Hero ========= */
.hero {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: center;
  margin-top: 72px;
  padding: 80px 0;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: var(--text-light);
  isolation: isolate;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(6,14,22,0.92) 0%, rgba(13,31,46,0.78) 48%, rgba(13,31,46,0.3) 100%);
  z-index: -1;
}
.hero-content { max-width: 660px; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(240,165,0,0.15);
  border: 1px solid rgba(240,165,0,0.3);
  color: #ffd166;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 24px;
  letter-spacing: 1px;
}
.hero h1 {
  font-size: 48px;
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 22px;
}
.hero h1 span { color: var(--accent); }
.hero p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255,255,255,0.8);
  margin-bottom: 34px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0d1f2e;
  box-shadow: 0 4px 18px rgba(240,165,0,0.3);
}
.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(240,165,0,0.4);
}
.btn-outline-light {
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
  background: rgba(255,255,255,0.06);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.14);
  border-color: #fff;
  transform: translateY(-2px);
}
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(255,255,255,0.15);
}
.hero-stats .stat-num {
  font-size: 28px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero-stats .stat-num span { color: var(--accent); }
.hero-stats .stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-top: 4px;
}

/* ========= Sections ========= */
.section { padding: 90px 0; }
.section-alt { background: var(--bg-white); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 5px 16px;
  border-radius: 50px;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  letter-spacing: -0.3px;
}
.section-head p {
  color: var(--text-weak);
  font-size: 16px;
  margin-top: 12px;
}

/* ========= Feature Cards ========= */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-6px);
  border-color: rgba(240,165,0,0.25);
}
.feature-card:hover::before { transform: scaleX(1); }
.feature-icon {
  width: 56px; height: 56px;
  background: var(--accent-soft);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--accent);
  margin-bottom: 20px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon {
  background: var(--accent);
  color: #fff;
  transform: scale(1.05) rotate(-4deg);
}
.feature-card h3 { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.feature-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* ========= Category Cards ========= */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.category-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  display: block;
}
.category-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-8px);
  border-color: rgba(240,165,0,0.3);
}
.category-card .card-media {
  height: 210px;
  overflow: hidden;
  position: relative;
}
.category-card .card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.category-card:hover .card-media img { transform: scale(1.08); }
.category-card .card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,31,46,0.35) 0%, transparent 55%);
}
.card-body { padding: 26px; }
.card-body h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.card-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; margin-bottom: 16px; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
}
.card-link i { transition: transform .3s ease; }
.category-card:hover .card-link i { transform: translateX(5px); }

/* ========= News List ========= */
.news-section {
  background: var(--bg);
  position: relative;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.news-card {
  display: flex;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
}
.news-card:hover {
  box-shadow: var(--shadow);
  border-color: rgba(240,165,0,0.25);
  transform: translateY(-4px);
}
.news-thumb {
  width: 140px;
  min-height: 130px;
  flex-shrink: 0;
  overflow: hidden;
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-body { padding: 20px 22px; flex: 1; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  font-size: 13px;
  color: var(--text-weak);
}
.news-cat {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 2px 10px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 12px;
}
.news-date { font-size: 13px; }
.news-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body p {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  background: var(--bg-white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-weak);
  font-size: 16px;
}

/* ========= Stats / Process ========= */
.stats-band {
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}
.stats-band::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -10%;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(240,165,0,0.12) 0%, transparent 70%);
  border-radius: 50%;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
  text-align: center;
  position: relative;
}
.stat-item .num {
  font-size: 44px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.stat-item .num span { color: var(--accent); }
.stat-item .label { font-size: 15px; color: rgba(255,255,255,0.6); margin-top: 8px; }
.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  counter-reset: step;
}
.process-step {
  counter-increment: step;
  background: var(--bg-white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 36px 24px 30px;
  text-align: center;
  position: relative;
  transition: var(--transition);
}
.process-step:hover {
  box-shadow: var(--shadow);
  transform: translateY(-6px);
}
.process-step::before {
  content: "0" counter(step);
  position: absolute;
  top: -18px;
  left: 50%;
  transform: translateX(-50%);
  width: 36px; height: 36px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(240,165,0,0.35);
}
.process-step .step-icon {
  font-size: 32px;
  color: var(--accent);
  margin-bottom: 16px;
}
.process-step h3 { font-size: 17px; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.process-step p { font-size: 14px; color: var(--text-weak); line-height: 1.6; }

/* ========= Feature Split ========= */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.split-media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.split-media img { width: 100%; height: 100%; object-fit: cover; min-height: 380px; }
.split-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, transparent 60%, rgba(13,31,46,0.2));
}
.split-content h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 20px;
}
.split-content h2 span { color: var(--accent); }
.split-content p { color: var(--text-weak); font-size: 15px; line-height: 1.8; margin-bottom: 20px; }
.split-list { margin-top: 20px; display: flex; flex-direction: column; gap: 14px; }
.split-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
}
.split-list li i {
  color: var(--accent);
  background: var(--accent-soft);
  width: 24px; height: 24px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  flex-shrink: 0;
  margin-top: 2px;
}

/* ========= FAQ ========= */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(240,165,0,0.3); }
.faq-item.open { box-shadow: var(--shadow-sm); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  transition: var(--transition);
}
.faq-question:hover { color: var(--accent); }
.faq-question .faq-icon {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-weak);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-question .faq-icon {
  background: var(--accent);
  color: #fff;
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  padding: 0 24px;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.8;
}
.faq-item.open .faq-answer {
  max-height: 400px;
  padding-bottom: 22px;
}

/* ========= CTA ========= */
.cta-section {
  position: relative;
  padding: 80px 0;
  background: linear-gradient(120deg, var(--primary) 0%, var(--primary-light) 100%);
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -80px; right: -80px;
  width: 320px; height: 320px;
  border-radius: 50%;
  background: rgba(240,165,0,0.1);
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -100px; left: -60px;
  width: 280px; height: 280px;
  border-radius: 50%;
  background: rgba(240,165,0,0.08);
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.cta-section p {
  color: rgba(255,255,255,0.75);
  font-size: 16px;
  margin-bottom: 30px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 16px rgba(0,0,0,0.12);
}
.btn-white:hover { background: var(--accent-soft); transform: translateY(-2px); }
.btn-outline-white {
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
}
.btn-outline-white:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-2px); }

/* ========= Footer ========= */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.65);
  padding-top: 70px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 50px;
  padding-bottom: 50px;
}
.footer-brand { font-size: 22px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.footer-brand span { color: var(--accent); }
.footer-desc { font-size: 14px; line-height: 1.8; margin-bottom: 20px; max-width: 340px; }
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h4::after {
  content: "";
  position: absolute;
  bottom: 0; left: 0;
  width: 26px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { font-size: 14px; color: rgba(255,255,255,0.6); }
.footer-col ul a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }

/* ========= Responsive ========= */
@media (max-width: 1024px) {
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .header-inner { grid-template-columns: auto 1fr auto; }
  .nav-left, .nav-right { gap: 4px; }
  .nav-left a, .nav-right a { padding: 8px 12px; font-size: 14px; }
}

@media (max-width: 768px) {
  .header-inner { grid-template-columns: 1fr auto; min-height: 64px; }
  .brand { font-size: 18px; }
  .nav-left, .nav-right { display: none; }
  .menu-toggle { display: flex; }
  .site-header .mobile-menu {
    position: absolute;
    top: 64px; left: 0; right: 0;
    background: #fff;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 16px 24px;
    display: none;
    flex-direction: column;
    gap: 4px;
  }
  .site-header .mobile-menu.open { display: flex; }
  .site-header .mobile-menu a {
    padding: 12px 16px;
    font-size: 16px;
    border-radius: 8px;
    color: var(--text);
  }
  .site-header .mobile-menu a:hover { background: var(--accent-soft); color: var(--accent); }
  .site-header .mobile-menu a.active { color: var(--primary); font-weight: 700; background: var(--accent-soft); }
  .hero { min-height: auto; margin-top: 64px; padding: 70px 0; }
  .hero h1 { font-size: 32px; }
  .hero p { font-size: 16px; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 27px; }
  .categories-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .news-thumb { width: 110px; min-height: 110px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .split-grid { grid-template-columns: 1fr; gap: 36px; }
  .split-media img { min-height: 260px; }
  .split-content h2 { font-size: 26px; }
  .faq-question { font-size: 15px; padding: 16px 18px; }
  .faq-answer { padding: 0 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-section h2 { font-size: 28px; }
  .process-steps { grid-template-columns: 1fr; gap: 30px; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .hero h1 { font-size: 26px; }
  .hero-btns { flex-direction: column; width: 100%; }
  .hero-btns .btn { width: 100%; }
  .features-grid { grid-template-columns: 1fr; }
  .stat-item .num { font-size: 34px; }
  .news-thumb { width: 90px; min-height: 110px; }
  .news-body { padding: 14px; }
  .news-body h3 { font-size: 14px; }
  .news-body p { display: none; }
  .section-head p { font-size: 14px; }
  .footer-bottom { font-size: 12px; }
}

/* roulang page: category1 */
:root {
  --primary: #0f3d3e;
  --primary-dark: #0b2e2f;
  --primary-light: #1d5556;
  --accent: #e0a458;
  --accent-dark: #c98a3d;
  --accent-light: #f3cd9e;
  --bg: #f5f7f6;
  --bg-white: #ffffff;
  --bg-deep: #0b2b2c;
  --text: #1f2a2a;
  --muted: #677878;
  --border: #e3eaea;
  --radius: 20px;
  --radius-sm: 12px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 10px rgba(15, 61, 62, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 61, 62, 0.1);
  --shadow-lg: 0 24px 60px rgba(15, 61, 62, 0.16);
  --font: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --container: 1200px;
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 16px;
  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: var(--transition);
}

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

ul, ol {
  list-style: none;
}

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

.section {
  padding: 100px 0;
}

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

.section-tag {
  display: inline-block;
  background: rgba(224, 164, 88, 0.14);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  padding: 6px 18px;
  border-radius: 100px;
  margin-bottom: 18px;
  text-transform: uppercase;
}

.section-head h2 {
  font-size: 32px;
  line-height: 1.3;
  color: var(--primary-dark);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

/* ===== Header / Nav ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(227, 234, 234, 0.8);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: 0 8px 30px rgba(15, 61, 62, 0.08);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-left,
.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-left a,
.nav-right a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  padding: 8px 16px;
  border-radius: 100px;
  position: relative;
}

.nav-left a:hover,
.nav-right a:hover {
  color: var(--primary);
  background: rgba(15, 61, 62, 0.06);
}

.nav-left a.active,
.nav-right a.active {
  color: var(--primary);
  background: rgba(15, 61, 62, 0.08);
  font-weight: 600;
}

.nav-left a.active::after,
.nav-right a.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--primary-dark);
  white-space: nowrap;
}

.brand span {
  color: var(--accent);
  font-weight: 700;
}

.brand em {
  font-style: normal;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--muted);
  text-transform: uppercase;
}

.menu-toggle {
  display: none;
  color: var(--primary-dark);
  padding: 8px;
  border-radius: 8px;
}

.menu-toggle:hover {
  background: rgba(15, 61, 62, 0.06);
}

.mobile-menu {
  display: none;
  flex-direction: column;
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 12px 24px 24px;
  gap: 4px;
}

.mobile-menu a {
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.mobile-menu a:hover {
  background: rgba(15, 61, 62, 0.05);
  color: var(--primary);
}

.mobile-menu a.active {
  color: var(--primary);
  background: rgba(15, 61, 62, 0.08);
  font-weight: 600;
}

@media (max-width: 1024px) {
  .brand {
    font-size: 18px;
  }
  .brand em {
    display: none;
  }
  .nav-left a,
  .nav-right a {
    font-size: 14px;
    padding: 8px 12px;
  }
}

@media (max-width: 860px) {
  .header-inner {
    height: 68px;
  }
  .nav-left,
  .nav-right {
    display: none;
  }
  .menu-toggle {
    display: inline-flex;
  }
  .mobile-menu.open {
    display: flex;
  }
  .brand {
    font-size: 19px;
  }
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 170px 0 90px;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(7, 30, 31, 0.94) 0%, rgba(15, 61, 62, 0.82) 60%, rgba(29, 85, 86, 0.72) 100%);
  z-index: 1;
}

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

.banner-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent-light);
  border: 1px solid rgba(224, 164, 88, 0.35);
  background: rgba(224, 164, 88, 0.12);
  padding: 8px 22px;
  border-radius: 100px;
  margin-bottom: 22px;
}

.page-banner h1 {
  font-size: 46px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  max-width: 640px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.page-banner .banner-desc {
  font-size: 17px;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.85);
  max-width: 600px;
  margin-bottom: 36px;
}

.banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 44px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 32px;
  border-radius: 100px;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
  line-height: 1.2;
}

.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(224, 164, 88, 0.3);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.18);
  transform: translateY(-2px);
}

.btn-light {
  background: #fff;
  color: var(--primary-dark);
}

.btn-light:hover {
  background: var(--accent);
  color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(224, 164, 88, 0.28);
}

.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-2px);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
}

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

.breadcrumb .sep {
  opacity: 0.5;
}

.breadcrumb .current {
  color: var(--accent-light);
}

@media (max-width: 768px) {
  .page-banner {
    padding: 130px 0 60px;
  }
  .page-banner h1 {
    font-size: 34px;
  }
  .page-banner .banner-desc {
    font-size: 15px;
  }
}

@media (max-width: 520px) {
  .page-banner h1 {
    font-size: 28px;
  }
  .banner-actions {
    flex-direction: column;
    width: 100%;
  }
  .banner-actions .btn {
    width: 100%;
  }
}

/* ===== Features ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

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

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary-light));
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

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

.feature-icon {
  font-size: 14px;
  font-weight: 800;
  color: var(--accent);
  background: rgba(224, 164, 88, 0.12);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  margin-bottom: 22px;
  letter-spacing: 0.5px;
}

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

.feature-card p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Process ===== */
.section-process {
  background: var(--bg-white);
  border-top: 1px solid var(--border);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 60px 20px;
  position: relative;
}

.process-grid::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-light), var(--accent), var(--accent-light));
  border-radius: 2px;
  opacity: 0.6;
}

.process-step {
  text-align: center;
  position: relative;
  padding-top: 80px;
}

.step-num {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  color: var(--primary);
  background: #fff;
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow: 0 6px 20px rgba(224, 164, 88, 0.2);
  z-index: 2;
}

.process-step h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.process-step p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}

@media (max-width: 1024px) {
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
  .process-grid::before {
    display: none;
  }
  .process-step {
    padding-top: 0;
    padding-left: 80px;
    text-align: left;
  }
  .step-num {
    top: 0;
    left: 0;
    transform: none;
  }
}

@media (max-width: 520px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== Detail Blocks ===== */
.section-detail {
  background: var(--bg);
}

.detail-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 80px;
}

.detail-block:last-child {
  margin-bottom: 0;
}

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

.detail-media img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.detail-block:hover .detail-media img {
  transform: scale(1.04);
}

.detail-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 43, 44, 0.25), transparent);
}

.detail-content .section-tag {
  margin-bottom: 14px;
}

.detail-content h2 {
  font-size: 30px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--primary-dark);
  margin-bottom: 18px;
  letter-spacing: -0.02em;
}

.detail-content p {
  font-size: 15px;
  color: var(--muted);
  line-height: 1.9;
  margin-bottom: 22px;
}

.detail-list {
  display: grid;
  gap: 14px;
}

.detail-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  color: var(--text);
  line-height: 1.7;
}

.detail-list li::before {
  content: "";
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 9px;
  box-shadow: 0 2px 8px rgba(224, 164, 88, 0.4);
}

.detail-block.reverse .detail-media {
  order: 2;
}

.detail-block.reverse .detail-content {
  order: 1;
}

@media (max-width: 860px) {
  .detail-block,
  .detail-block.reverse {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .detail-block.reverse .detail-media,
  .detail-block.reverse .detail-content {
    order: initial;
  }
  .detail-media img {
    height: 280px;
  }
  .detail-content h2 {
    font-size: 26px;
  }
}

/* ===== Stats ===== */
.section-stats {
  position: relative;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat fixed;
  color: #fff;
  padding: 90px 0;
  text-align: center;
}

.section-stats::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(11, 43, 44, 0.94), rgba(15, 61, 62, 0.86));
}

.section-stats .container {
  position: relative;
  z-index: 1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 40px;
}

.stat-item strong {
  display: block;
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 10px;
}

.stat-item span {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 1px;
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .stat-item strong {
    font-size: 34px;
  }
}

/* ===== Category Cards ===== */
.section-categories {
  background: var(--bg-white);
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.category-card {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
  border: 1px solid var(--border);
  transition: var(--transition);
  position: relative;
}

.category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

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

.category-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.category-card:hover .card-media img {
  transform: scale(1.06);
}

.category-card .card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 43, 44, 0.35), transparent 60%);
}

.card-body {
  padding: 28px;
  background: #fff;
}

.card-body h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 8px;
}

.card-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
  margin-bottom: 18px;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-dark);
}

.card-link::after {
  content: "→";
  transition: transform 0.3s ease;
}

.category-card:hover .card-link::after {
  transform: translateX(6px);
}

@media (max-width: 860px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
}

/* ===== FAQ ===== */
.section-faq {
  background: var(--bg);
}

.faq-list {
  max-width: 840px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover {
  border-color: rgba(224, 164, 88, 0.5);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 24px 30px;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-dark);
  cursor: pointer;
  list-style: none;
  transition: var(--transition);
}

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

.faq-item summary::after {
  content: "+";
  font-size: 26px;
  font-weight: 400;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 0.35s ease;
  line-height: 1;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 30px 26px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

@media (max-width: 520px) {
  .faq-item summary {
    padding: 20px;
  }
  .faq-item .faq-answer {
    padding: 0 20px 20px;
  }
}

/* ===== CTA ===== */
.section-cta {
  background: var(--primary-dark);
  position: relative;
  overflow: hidden;
  text-align: center;
  color: #fff;
}

.section-cta::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(224, 164, 88, 0.25), transparent 70%);
}

.section-cta .container {
  position: relative;
  z-index: 1;
}

.section-cta h2 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

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

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

@media (max-width: 520px) {
  .section-cta h2 {
    font-size: 26px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
  .cta-actions .btn {
    width: 100%;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-deep);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 60px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.footer-brand::after {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  background: var(--accent);
  border-radius: 3px;
  margin-top: 14px;
}

.footer-desc {
  font-size: 14px;
  line-height: 1.9;
  max-width: 360px;
}

.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}

.footer-col ul {
  display: grid;
  gap: 12px;
}

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

.footer-col a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-bottom {
  padding: 26px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

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

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

@media (max-width: 860px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 520px) {
  .site-footer {
    padding-top: 50px;
  }
}

/* ===== Focus / A11y ===== */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(224, 164, 88, 0.6);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ===== Section spacing adjustments ===== */
@media (max-width: 768px) {
  .section {
    padding: 72px 0;
  }
  .section-head {
    margin-bottom: 40px;
  }
  .section-head h2 {
    font-size: 26px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #0e2a47;
  --primary-dark: #081c31;
  --primary-light: #1b3a5f;
  --accent: #f5a623;
  --accent-dark: #d98e14;
  --accent-light: #fff3e0;
  --bg-page: #f5f7fa;
  --bg-deep: #eaeef3;
  --surface: #ffffff;
  --text-main: #1a2332;
  --text-weak: #5e6e80;
  --border: #e2e8f0;
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 10px rgba(14, 42, 71, 0.06);
  --shadow-md: 0 8px 28px rgba(14, 42, 71, 0.08);
  --shadow-lg: 0 18px 48px rgba(14, 42, 71, 0.13);
  --transition: all 0.25s ease;
  --header-h: 76px;
}

*, *::before, *::after {
  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-main);
  background: var(--bg-page);
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button, input {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

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

.section {
  padding: 76px 0;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 42px;
}

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--primary);
  line-height: 1.3;
}

.section-head h2 span {
  color: var(--accent);
}

.section-head p {
  color: var(--text-weak);
  max-width: 420px;
  font-size: 15px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1.2;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
}

.btn-primary {
  background: var(--accent);
  color: #0b1f35;
  box-shadow: 0 6px 18px rgba(245, 166, 35, 0.35);
}

.btn-primary:hover {
  background: #ffb43a;
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(245, 166, 35, 0.42);
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.7);
  color: #fff;
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.btn-outline-dark {
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-outline-dark:hover {
  background: var(--primary);
  color: #fff;
}

.badge {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  background: var(--accent-light);
  color: #b37400;
  border: 1px solid #ffe2b8;
}

.badge-blue {
  background: #e8f0fe;
  color: #1a56c4;
  border-color: #cdddfc;
}

.badge-green {
  background: #e6f7ed;
  color: #16874a;
  border-color: #bfe8cf;
}

.badge-purple {
  background: #f1eafd;
  color: #7a3cd0;
  border-color: #ddccf7;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1320px;
  margin: 0 auto;
  height: var(--header-h);
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-left a, .nav-right a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  position: relative;
  padding: 8px 2px;
}

.nav-left a::after, .nav-right a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.3s ease;
}

.nav-left a:hover, .nav-right a:hover {
  color: var(--primary);
}

.nav-left a:hover::after, .nav-right a:hover::after,
.nav-left a.active::after, .nav-right a.active::after {
  transform: scaleX(1);
}

.nav-left a.active, .nav-right a.active {
  color: var(--primary);
  font-weight: 600;
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-size: 23px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
  white-space: nowrap;
  line-height: 1;
}

.brand span {
  color: var(--accent);
  font-weight: 900;
}

.brand em {
  font-style: normal;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 2.5px;
  color: var(--text-weak);
  text-transform: uppercase;
}

.menu-toggle {
  display: none;
  background: transparent;
  color: var(--primary);
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
}

.mobile-menu {
  display: none;
  position: absolute;
  top: var(--header-h);
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 12px 24px 20px;
  box-shadow: var(--shadow-md);
  flex-direction: column;
  gap: 4px;
  z-index: 99;
}

.mobile-menu.open {
  display: flex;
}

.mobile-menu a {
  padding: 13px 8px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-main);
  border-bottom: 1px solid #f1f4f8;
}

.mobile-menu a:last-child {
  border-bottom: none;
}

.mobile-menu a:hover, .mobile-menu a.active {
  color: var(--primary);
  font-weight: 600;
  background: #f7f9fc;
  border-radius: 10px;
}

/* ===== Page Banner ===== */
.page-banner {
  position: relative;
  padding: 120px 0 110px;
  background-image: url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center;
  text-align: center;
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(8, 28, 49, 0.92) 0%, rgba(14, 42, 71, 0.78) 55%, rgba(14, 42, 71, 0.6) 100%);
}

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

.page-banner .banner-tag {
  display: inline-block;
  padding: 7px 20px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  margin-bottom: 26px;
  backdrop-filter: blur(6px);
}

.page-banner h1 {
  font-size: 48px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
  margin-bottom: 18px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.page-banner h1 span {
  color: var(--accent);
}

.page-banner .banner-desc {
  max-width: 640px;
  margin: 0 auto;
  font-size: 17px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.8;
}

.banner-meta {
  margin-top: 30px;
  display: flex;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}

.banner-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 14px;
}

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

/* ===== Hot Tags ===== */
.news-tags {
  background: #fff;
  border-bottom: 1px solid var(--border);
}

.news-tags .tags-inner {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 20px 0;
}

.news-tags .tags-label {
  font-weight: 700;
  font-size: 14px;
  color: var(--primary);
  margin-right: 6px;
  white-space: nowrap;
}

.news-tags .tag-item {
  padding: 6px 16px;
  border-radius: 999px;
  background: #f0f3f8;
  color: var(--text-weak);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: var(--transition);
}

.news-tags .tag-item:hover {
  background: var(--accent-light);
  color: #b37400;
  border-color: #ffe2b8;
}

.news-tags .tag-item.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(14, 42, 71, 0.25);
}

/* ===== Featured News Grid ===== */
.news-featured {
  background: var(--bg-page);
  padding-top: 70px;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.news-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.news-card .card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.news-card .card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.news-card .card-media .badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: var(--shadow-sm);
  border: none;
}

.news-card .card-body {
  padding: 24px 26px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-card .card-body h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--primary);
  margin-bottom: 12px;
  transition: color 0.2s ease;
}

.news-card .card-body h3 a:hover {
  color: #b37400;
}

.news-card .card-body p {
  color: var(--text-weak);
  font-size: 14.5px;
  line-height: 1.75;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid #eef1f5;
  font-size: 13px;
  color: var(--text-weak);
}

.card-footer .meta-views {
  display: flex;
  align-items: center;
  gap: 6px;
}

.card-footer .more-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
}

.card-footer .more-link:hover {
  color: var(--accent-dark);
}

/* ===== News Updates + Rankings ===== */
.news-updates {
  background: #fff;
}

.updates-layout {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 48px;
  align-items: start;
}

.timeline-wrap {
  border-left: 3px solid #eef1f5;
  padding-left: 30px;
}

.timeline-item {
  position: relative;
  padding: 0 0 36px 0;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.18);
}

.timeline-item .tl-date {
  font-size: 12px;
  color: var(--text-weak);
  letter-spacing: 1px;
  background: #f5f7fa;
  display: inline-block;
  padding: 3px 12px;
  border-radius: 6px;
  margin-bottom: 8px;
  font-weight: 600;
}

.timeline-item h4 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 6px;
  line-height: 1.5;
}

.timeline-item h4 a:hover {
  color: var(--accent-dark);
}

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

.rank-card {
  background: linear-gradient(160deg, #f8fafc 0%, #f0f4f8 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  box-shadow: var(--shadow-sm);
}

.rank-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.rank-card h3 i {
  font-style: normal;
  font-size: 22px;
}

.rank-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--border);
}

.rank-list li:last-child {
  border-bottom: none;
}

.rank-num {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: #e8edf3;
  color: var(--text-weak);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  flex-shrink: 0;
}

.rank-list li:nth-child(-n+3) .rank-num {
  background: var(--accent);
  color: #0b1f35;
  box-shadow: 0 4px 12px rgba(245, 166, 35, 0.35);
}

.rank-list .rank-info {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.rank-list .rank-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--text-main);
}

.rank-list .rank-heat {
  font-size: 12px;
  color: var(--text-weak);
  background: #fff;
  padding: 3px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  white-space: nowrap;
}

/* ===== Topics ===== */
.topics-section {
  background: var(--bg-deep);
}

.topics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.topic-card {
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}

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

.topic-card .topic-media {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.topic-card .topic-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.topic-card:hover .topic-media img {
  transform: scale(1.06);
}

.topic-card .topic-media .badge {
  position: absolute;
  bottom: 14px;
  left: 14px;
  background: rgba(8, 28, 49, 0.8);
  color: #fff;
  border: none;
  backdrop-filter: blur(6px);
}

.topic-card .topic-body {
  padding: 24px 26px 28px;
}

.topic-card .topic-body h3 {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.topic-card .topic-body h3 a:hover {
  color: var(--accent-dark);
}

.topic-card .topic-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.75;
  margin-bottom: 16px;
}

.topic-card .topic-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-weak);
}

.topic-card .topic-meta .count {
  font-weight: 600;
  color: var(--primary);
  background: #f0f3f8;
  padding: 4px 12px;
  border-radius: 999px;
}

/* ===== FAQ ===== */
.faq-section {
  background: #fff;
}

.faq-layout {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 56px;
  align-items: start;
}

.faq-intro h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.faq-intro h2 span {
  color: var(--accent);
}

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

.faq-list .faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 16px;
  background: #fbfcfe;
  overflow: hidden;
  transition: border-color 0.3s ease;
}

.faq-item:hover {
  border-color: #d5dde7;
}

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

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

.faq-item summary::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  color: var(--accent);
  transition: var(--transition);
  line-height: 1;
  flex-shrink: 0;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--text-weak);
  line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
  position: relative;
  background: var(--primary-dark);
  background-image: url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  padding: 84px 0;
  text-align: center;
}

.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(8, 28, 49, 0.94), rgba(14, 42, 71, 0.85));
}

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

.cta-section h2 {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 16px;
  max-width: 540px;
  margin: 0 auto 34px;
}

.cta-form {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  max-width: 560px;
  margin: 0 auto;
}

.cta-form input {
  flex: 1;
  min-width: 260px;
  padding: 14px 22px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.28);
  color: #fff;
  font-size: 15px;
  transition: var(--transition);
}

.cta-form input::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

.cta-form input:focus {
  background: rgba(255, 255, 255, 0.18);
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(245, 166, 35, 0.2);
}

/* ===== Footer ===== */
.site-footer {
  background: #0a1a2c;
  color: rgba(255, 255, 255, 0.75);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand {
  font-size: 24px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.footer-brand span {
  color: var(--accent);
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.6);
  max-width: 360px;
}

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

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.62);
  transition: var(--transition);
}

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

.footer-bottom {
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}

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

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-left, .nav-right {
    gap: 22px;
  }
  .updates-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .topics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 56px 0;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 30px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .section-head p {
    font-size: 14px;
  }
  .nav-left, .nav-right {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .header-inner {
    padding: 0 20px;
  }
  .brand {
    font-size: 20px;
  }
  .brand em {
    font-size: 9px;
  }
  .page-banner {
    padding: 80px 0;
  }
  .page-banner h1 {
    font-size: 32px;
  }
  .page-banner .banner-desc {
    font-size: 15px;
  }
  .banner-meta {
    gap: 20px;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .topics-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .cta-section h2 {
    font-size: 26px;
  }
  .cta-form input {
    min-width: 100%;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }
  .page-banner {
    padding: 64px 0 56px;
  }
  .page-banner h1 {
    font-size: 27px;
  }
  .page-banner .banner-desc {
    font-size: 14px;
  }
  .page-banner .banner-tag {
    font-size: 12px;
    padding: 5px 14px;
  }
  .news-tags .tags-inner {
    gap: 8px;
    padding: 16px 0;
  }
  .news-tags .tag-item {
    padding: 5px 12px;
    font-size: 12px;
  }
  .news-card .card-body {
    padding: 20px;
  }
  .news-card .card-body h3 {
    font-size: 18px;
  }
  .timeline-wrap {
    padding-left: 20px;
    border-left-width: 2px;
  }
  .timeline-item::before {
    left: -25px;
  }
  .rank-card {
    padding: 24px 18px;
  }
  .topic-card .topic-body {
    padding: 20px;
  }
  .faq-item summary {
    padding: 16px 18px;
    font-size: 15px;
  }
  .faq-item .faq-answer {
    padding: 0 18px 18px;
    font-size: 14px;
  }
  .cta-form {
    flex-direction: column;
    align-items: center;
  }
  .cta-form input {
    width: 100%;
    min-width: 0;
  }
}

/* roulang page: article */
:root {
  --brand: #1a5cff;
  --brand-dark: #0a3bb8;
  --brand-light: #e8f0ff;
  --accent: #ffb03a;
  --accent-dark: #e8921a;
  --deep: #0b1f35;
  --bg: #f4f7fc;
  --card: #ffffff;
  --text: #21364e;
  --text-weak: #64809f;
  --border: #e3eaf2;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 16px 40px rgba(11, 31, 53, .08);
  --shadow-sm: 0 6px 20px rgba(11, 31, 53, .06);
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.75; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; font-size: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 12px 28px; border-radius: 999px; font-size: 15px; font-weight: 600; border: none; cursor: pointer; transition: all .25s ease; }
.btn-primary { background: var(--brand); color: #fff; box-shadow: 0 8px 24px rgba(26, 92, 255, .28); }
.btn-primary:hover { background: var(--brand-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(26, 92, 255, .34); }
.btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255, 255, 255, .65); }
.btn-outline:hover { background: rgba(255, 255, 255, .12); border-color: #fff; transform: translateY(-2px); }
.badge { display: inline-block; padding: 6px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; background: var(--brand-light); color: var(--brand-dark); }
.tag { display: inline-block; padding: 4px 14px; border-radius: 999px; font-size: 13px; background: var(--bg); color: var(--text-weak); border: 1px solid var(--border); transition: all .2s; }
.tag:hover { background: var(--brand-light); color: var(--brand-dark); border-color: transparent; }
.section { padding: 96px 0; }
.section-label { display: inline-block; font-size: 14px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--brand); margin-bottom: 12px; }
.section-title { font-size: 36px; font-weight: 800; line-height: 1.25; color: var(--deep); letter-spacing: -.5px; }
.section-desc { color: var(--text-weak); font-size: 16px; max-width: 640px; margin-top: 14px; }

.site-header { background: rgba(255, 255, 255, .92); backdrop-filter: blur(14px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 1000; }
.header-inner { max-width: 1200px; margin: 0 auto; padding: 0 24px; height: 74px; display: flex; align-items: center; justify-content: space-between; position: relative; }
.nav-left, .nav-right { display: flex; align-items: center; gap: 34px; }
.nav-left a, .nav-right a { font-size: 15px; font-weight: 600; color: var(--text-weak); transition: color .2s; position: relative; }
.nav-left a:hover, .nav-right a:hover, .nav-left a.active, .nav-right a.active { color: var(--brand); }
.nav-left a.active::after, .nav-right a.active::after { content: ""; position: absolute; left: 0; bottom: -8px; width: 100%; height: 3px; background: var(--brand); border-radius: 3px; }
.brand { position: absolute; left: 50%; transform: translateX(-50%); display: flex; align-items: baseline; gap: 4px; font-size: 22px; font-weight: 800; color: var(--deep); letter-spacing: -.5px; white-space: nowrap; }
.brand span { color: var(--accent); }
.brand em { font-style: normal; font-size: 10px; font-weight: 700; letter-spacing: 3px; color: var(--text-weak); }
.menu-toggle { display: none; background: none; border: none; color: var(--deep); cursor: pointer; padding: 8px; border-radius: 8px; }
.menu-toggle:focus-visible { outline: 3px solid var(--brand); outline-offset: 2px; }
.mobile-menu { display: none; background: #fff; border-bottom: 1px solid var(--border); padding: 12px 24px 20px; }
.mobile-menu a { display: block; padding: 12px 8px; font-size: 15px; font-weight: 600; color: var(--text); border-bottom: 1px solid #f0f4f9; }
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a:hover { color: var(--brand); }

.article-hero { background: linear-gradient(135deg, rgba(8, 28, 51, .92), rgba(17, 45, 88, .78)), url('/assets/images/backpic/back-2.png') center/cover; color: #fff; padding: 96px 0 80px; }
.article-hero-inner { max-width: 860px; }
.hero-badge { display: inline-block; padding: 6px 18px; border-radius: 999px; background: rgba(255, 255, 255, .14); border: 1px solid rgba(255, 255, 255, .24); font-size: 13px; font-weight: 600; color: #fff; margin-bottom: 22px; letter-spacing: 1px; }
.article-hero h1 { font-size: 42px; line-height: 1.25; font-weight: 800; letter-spacing: -.5px; margin-bottom: 18px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 18px; margin: 18px 0; font-size: 14px; color: rgba(255, 255, 255, .72); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-hero p { font-size: 16px; line-height: 1.8; color: rgba(255, 255, 255, .82); max-width: 720px; margin-top: 12px; }

.article-section { padding: 80px 0 96px; }
.article-layout { max-width: 860px; margin: 0 auto; }
.article-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 48px; border: 1px solid var(--border); }
.article-card .article-content { font-size: 16px; line-height: 1.9; color: #2c3a4d; }
.article-card .article-content h2 { font-size: 26px; font-weight: 800; color: var(--deep); margin: 36px 0 16px; padding-bottom: 10px; border-bottom: 1px solid var(--border); }
.article-card .article-content h3 { font-size: 20px; font-weight: 700; color: var(--deep); margin: 28px 0 12px; }
.article-card .article-content p { margin-bottom: 18px; }
.article-card .article-content ul, .article-card .article-content ol { margin: 16px 0 20px; padding-left: 24px; }
.article-card .article-content li { margin-bottom: 8px; }
.article-card .article-content img { border-radius: var(--radius-sm); margin: 20px 0; box-shadow: var(--shadow-sm); }
.article-card .article-content blockquote { background: var(--brand-light); border-left: 4px solid var(--brand); padding: 16px 20px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 20px 0; color: var(--brand-dark); }
.article-card .article-content a { color: var(--brand); border-bottom: 1px solid rgba(26, 92, 255, .3); }
.article-card .article-content a:hover { border-bottom-color: var(--brand); }
.article-footer-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border); }
.not-found-block { text-align: center; padding: 60px 20px; }
.not-found-block h2 { font-size: 28px; font-weight: 800; color: var(--deep); margin-bottom: 12px; }
.not-found-block p { color: var(--text-weak); margin-bottom: 28px; }

.related-section { background: #fff; padding: 96px 0; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.related-header { display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: 40px; gap: 20px; flex-wrap: wrap; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.related-card { background: var(--bg); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); transition: all .3s ease; }
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.related-card img { width: 100%; height: 180px; object-fit: cover; }
.related-card-body { padding: 24px; }
.related-card-body h3 { font-size: 18px; font-weight: 700; color: var(--deep); margin-bottom: 10px; }
.related-card-body p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }
.related-card-link { display: inline-flex; align-items: center; gap: 4px; margin-top: 14px; font-size: 14px; font-weight: 600; color: var(--brand); }
.related-card-link:hover { gap: 8px; }

.feature-section { padding: 96px 0; background: var(--bg); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 48px; }
.feature-card { background: #fff; border-radius: var(--radius); padding: 36px 30px; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all .3s ease; }
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.feature-icon { width: 52px; height: 52px; border-radius: 14px; background: var(--brand-light); display: flex; align-items: center; justify-content: center; color: var(--brand); margin-bottom: 20px; }
.feature-card h3 { font-size: 19px; font-weight: 700; color: var(--deep); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

.faq-section { padding: 96px 0; background: #fff; }
.faq-grid { max-width: 820px; margin: 48px auto 0; display: grid; gap: 16px; }
.faq-item { background: var(--bg); border-radius: var(--radius); border: 1px solid var(--border); padding: 0; overflow: hidden; transition: border-color .2s; }
.faq-item:hover { border-color: var(--brand); }
.faq-question { padding: 22px 28px; font-size: 16px; font-weight: 700; color: var(--deep); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq-question::after { content: "+"; font-size: 22px; font-weight: 400; color: var(--brand); flex-shrink: 0; transition: transform .3s; }
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .35s ease; }
.faq-answer p { padding: 0 28px 22px; font-size: 15px; color: var(--text-weak); line-height: 1.8; }

.cta-section { padding: 90px 0; background: linear-gradient(135deg, rgba(8, 28, 51, .94), rgba(17, 45, 88, .86)), url('/assets/images/backpic/back-3.png') center/cover; color: #fff; text-align: center; }
.cta-inner { max-width: 720px; margin: 0 auto; }
.cta-inner h2 { font-size: 36px; font-weight: 800; line-height: 1.3; margin-bottom: 16px; }
.cta-inner p { color: rgba(255, 255, 255, .82); font-size: 16px; margin-bottom: 34px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.site-footer { background: var(--deep); color: rgba(255, 255, 255, .72); padding: 70px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 44px; padding-bottom: 44px; border-bottom: 1px solid rgba(255, 255, 255, .1); }
.footer-brand { font-size: 22px; font-weight: 800; color: #fff; margin-bottom: 14px; }
.footer-desc { font-size: 14px; line-height: 1.8; max-width: 400px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { font-size: 14px; color: rgba(255, 255, 255, .72); transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { padding-top: 24px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 13px; color: rgba(255, 255, 255, .5); }
.footer-bottom a { color: rgba(255, 255, 255, .7); }
.footer-bottom a:hover { color: var(--accent); }

@media (max-width: 1024px) {
  .header-inner { height: 68px; padding: 0 20px; }
  .nav-left, .nav-right { gap: 20px; }
  .brand { font-size: 19px; }
  .brand em { font-size: 9px; }
  .related-grid { gap: 20px; }
  .feature-grid { gap: 20px; }
}
@media (max-width: 768px) {
  .nav-left, .nav-right { display: none; }
  .menu-toggle { display: flex; }
  .mobile-menu.open { display: block; }
  .brand { position: static; transform: none; margin-right: auto; }
  .header-inner { gap: 12px; }
  .article-hero { padding: 70px 0 56px; }
  .article-hero h1 { font-size: 30px; }
  .article-section { padding: 56px 0 72px; }
  .article-card { padding: 28px 20px; border-radius: var(--radius-sm); }
  .related-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .section { padding: 64px 0; }
  .section-title { font-size: 28px; }
  .cta-inner h2 { font-size: 28px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-hero h1 { font-size: 24px; }
  .article-meta { flex-direction: column; gap: 6px; }
  .btn { padding: 10px 22px; font-size: 14px; }
  .related-card-body h3 { font-size: 17px; }
  .cta-buttons { flex-direction: column; }
}

/* roulang page: category3 */
:root {
  --primary: #1b4f8b;
  --primary-dark: #123a6b;
  --primary-light: #3e7bc4;
  --accent: #e6a23c;
  --accent-dark: #c8872b;
  --accent-light: #f5c56a;
  --bg-light: #f4f7fb;
  --bg-white: #ffffff;
  --bg-dark: #0e2038;
  --text-main: #17324d;
  --text-body: #42566e;
  --text-weak: #7a8ba0;
  --border-light: #e3eaf2;
  --border-mid: #cdd9e8;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 2px 8px rgba(14, 32, 56, 0.06);
  --shadow-md: 0 8px 24px rgba(14, 32, 56, 0.08);
  --shadow-lg: 0 16px 40px rgba(14, 32, 56, 0.12);
  --transition: all 0.3s ease;
  --container: 1200px;
}
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg-white);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  border: none;
  background: none;
  cursor: pointer;
}
input, textarea {
  font-family: inherit;
}
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section {
  padding: 88px 0;
}
.section-alt {
  background: var(--bg-light);
}
.section-head {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 52px;
}
.section-tag {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(27, 79, 139, 0.08);
  border: 1px solid rgba(27, 79, 139, 0.16);
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 14px;
}
.section-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-bottom: 14px;
}
.section-desc {
  font-size: 16px;
  color: var(--text-body);
  line-height: 1.8;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 2px 12px rgba(14, 32, 56, 0.04);
}
.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 72px;
}
.nav-left, .nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-left a, .nav-right a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-body);
  padding: 8px 16px;
  border-radius: 8px;
}
.nav-left a:hover, .nav-right a:hover {
  color: var(--primary);
  background: rgba(27, 79, 139, 0.06);
}
.nav-left a.active, .nav-right a.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(27, 79, 139, 0.09);
  box-shadow: inset 0 0 0 1px rgba(27, 79, 139, 0.14);
}
.brand {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 22px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.brand span {
  color: var(--accent);
  font-size: 22px;
  font-weight: 700;
  margin: 0 2px;
}
.brand em {
  font-style: normal;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-weak);
  letter-spacing: 1.5px;
  margin-left: 4px;
  white-space: nowrap;
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: var(--text-main);
  transition: var(--transition);
}
.menu-toggle:hover {
  background: rgba(27, 79, 139, 0.06);
}
.mobile-menu {
  display: none;
  position: absolute;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 12px 24px rgba(14, 32, 56, 0.08);
  padding: 12px 24px 20px;
  flex-direction: column;
  gap: 4px;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-body);
  padding: 12px 16px;
  border-radius: 10px;
}
.mobile-menu a.active {
  color: var(--primary);
  font-weight: 600;
  background: rgba(27, 79, 139, 0.08);
}
.mobile-menu a:hover {
  background: rgba(27, 79, 139, 0.05);
}

/* Page Hero */
.page-hero {
  position: relative;
  padding: 110px 0 90px;
  background: linear-gradient(135deg, rgba(10, 30, 55, 0.92), rgba(18, 58, 107, 0.85)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color: #fff;
}
.page-hero .hero-content {
  max-width: 720px;
}
.page-hero .hero-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--accent-light);
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 20px;
}
.page-hero h1 {
  font-size: 40px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.page-hero p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
  max-width: 620px;
}
.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}
.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}
.hero-meta-item i {
  font-style: normal;
  font-size: 16px;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}

/* Breadcrumb */
.breadcrumb {
  padding: 16px 0;
  font-size: 14px;
  color: var(--text-weak);
  border-bottom: 1px solid var(--border-light);
  background: var(--bg-light);
}
.breadcrumb a {
  color: var(--primary);
}
.breadcrumb span.sep {
  margin: 0 8px;
  color: #b6c3d4;
}

/* Intro Section */
.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.intro-media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.intro-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.intro-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 32, 56, 0) 60%, rgba(14, 32, 56, 0.35) 100%);
  pointer-events: none;
}
.intro-badge {
  position: absolute;
  bottom: 24px;
  left: 24px;
  background: rgba(255, 255, 255, 0.95);
  padding: 12px 20px;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  z-index: 2;
}
.intro-badge strong {
  display: block;
  font-size: 20px;
  color: var(--primary);
}
.intro-badge span {
  font-size: 13px;
  color: var(--text-weak);
}
.intro-content h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.4;
}
.intro-content p {
  color: var(--text-body);
  line-height: 1.9;
  margin-bottom: 16px;
}
.intro-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.intro-feature {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: var(--bg-light);
  border-radius: 12px;
  border: 1px solid var(--border-light);
}
.intro-feature .icon-dot {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  border-radius: 8px;
  background: rgba(27, 79, 139, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--primary);
}
.intro-feature strong {
  display: block;
  font-size: 15px;
  color: var(--text-main);
  margin-bottom: 2px;
}
.intro-feature span {
  font-size: 13px;
  color: var(--text-weak);
  line-height: 1.4;
}

/* Level Cards */
.level-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.level-card {
  position: relative;
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 32px 26px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  text-align: center;
  overflow: hidden;
}
.level-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  border-radius: 4px 4px 0 0;
}
.level-card:nth-child(1)::before {
  background: #8d9db1;
}
.level-card:nth-child(2)::before {
  background: #9fb8d4;
}
.level-card:nth-child(3)::before {
  background: var(--accent);
}
.level-card:nth-child(4)::before {
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
}
.level-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-mid);
}
.level-card .level-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}
.level-card:nth-child(1) .level-icon {
  background: rgba(141, 157, 177, 0.14);
  color: #64748b;
}
.level-card:nth-child(2) .level-icon {
  background: rgba(159, 184, 212, 0.16);
  color: #6b8cae;
}
.level-card:nth-child(3) .level-icon {
  background: rgba(230, 162, 60, 0.14);
  color: var(--accent-dark);
}
.level-card:nth-child(4) .level-icon {
  background: rgba(27, 79, 139, 0.12);
  color: var(--primary);
}
.level-card h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 6px;
}
.level-card .level-sub {
  font-size: 13px;
  color: var(--text-weak);
  margin-bottom: 18px;
}
.level-card ul {
  text-align: left;
  margin-bottom: 22px;
}
.level-card ul li {
  font-size: 14px;
  color: var(--text-body);
  padding: 7px 0;
  border-bottom: 1px dashed var(--border-light);
  display: flex;
  align-items: center;
  gap: 8px;
}
.level-card ul li:last-child {
  border-bottom: none;
}
.level-card ul li::before {
  content: '◆';
  font-size: 4px;
  color: var(--accent);
  flex-shrink: 0;
}
.level-card .level-point {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(27, 79, 139, 0.08);
  padding: 6px 16px;
  border-radius: 20px;
}

/* Benefit Section */
.benefit-section {
  background: linear-gradient(160deg, #0e2038 0%, #173a63 55%, #1b4f8b 100%);
  color: #fff;
}
.benefit-section .section-title {
  color: #fff;
}
.benefit-section .section-desc {
  color: rgba(255, 255, 255, 0.78);
}
.benefit-section .section-tag {
  color: var(--accent-light);
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.22);
}
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.benefit-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 30px 28px;
  transition: var(--transition);
  backdrop-filter: blur(6px);
}
.benefit-card:hover {
  background: rgba(255, 255, 255, 0.13);
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.24);
}
.benefit-card .benefit-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(230, 162, 60, 0.18);
  border: 1px solid rgba(230, 162, 60, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 18px;
}
.benefit-card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #fff;
}
.benefit-card p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.75);
}
.benefit-card .benefit-sub {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}
.benefit-card .benefit-sub span {
  display: inline-block;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.8);
  margin: 0 6px 6px 0;
}

/* Stats Band */
.stats-band {
  background: var(--bg-white);
  padding: 70px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.stat-item .stat-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
}
.stat-item .stat-num em {
  font-style: normal;
  font-size: 24px;
  font-weight: 700;
  margin-left: 2px;
}
.stat-item .stat-label {
  font-size: 14px;
  color: var(--text-body);
  margin-top: 8px;
}
.stat-divider {
  width: 40px;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
  margin: 20px auto 0;
}

/* Growth Process */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  counter-reset: step;
}
.process-step {
  position: relative;
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}
.process-step:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.process-step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  font-size: 42px;
  font-weight: 800;
  color: rgba(27, 79, 139, 0.1);
  display: block;
  margin-bottom: 10px;
  line-height: 1;
}
.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 10px;
}
.process-step p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
}
.process-arrow {
  position: absolute;
  right: -16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  z-index: 2;
  box-shadow: var(--shadow-sm);
}
.process-step:nth-child(4) .process-arrow {
  display: none;
}

/* Security Section */
.security-section {
  background: var(--bg-light);
}
.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.security-illustration {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}
.security-illustration img {
  width: 100%;
  height: 380px;
  object-fit: cover;
}
.security-illustration-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 32, 56, 0.1) 0%, rgba(14, 32, 56, 0.7) 100%);
  display: flex;
  align-items: flex-end;
  padding: 28px;
}
.security-illustration-overlay div {
  color: #fff;
}
.security-illustration-overlay strong {
  font-size: 20px;
  display: block;
  margin-bottom: 4px;
}
.security-illustration-overlay span {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}
.security-content h3 {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  line-height: 1.4;
}
.security-content > p {
  margin-bottom: 24px;
  line-height: 1.85;
}
.security-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.security-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: var(--bg-white);
  border-radius: 12px;
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.security-list li:hover {
  border-color: var(--border-mid);
  box-shadow: var(--shadow-sm);
}
.security-list .check-icon {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  border-radius: 10px;
  background: rgba(27, 79, 139, 0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
}
.security-list strong {
  display: block;
  font-size: 15px;
  color: var(--text-main);
}
.security-list span {
  font-size: 13px;
  color: var(--text-weak);
}

/* FAQ */
.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--bg-white);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--border-mid);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  gap: 16px;
}
.faq-question .faq-toggle {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(27, 79, 139, 0.08);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 400;
  transition: var(--transition);
}
.faq-item.active .faq-toggle {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  display: none;
  padding: 0 24px 22px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-body);
}
.faq-item.active .faq-answer {
  display: block;
}

/* CTA Band */
.cta-band {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
}
.cta-band::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: 40%;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(230, 162, 60, 0.12);
}
.cta-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
}
.cta-content h3 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 12px;
}
.cta-content p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.85);
}
.cta-actions {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 14px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 50px;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(230, 162, 60, 0.35);
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(230, 162, 60, 0.42);
}
.btn-primary:active {
  transform: translateY(0);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.7);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-outline-dark {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline-dark:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
}
.btn-large {
  padding: 15px 38px;
  font-size: 16px;
}
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(27, 79, 139, 0.4);
  outline-offset: 2px;
}

/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.58);
  max-width: 420px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  transition: var(--transition);
}
.footer-col ul li a:hover {
  color: var(--accent-light);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-bottom a {
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom a:hover {
  color: var(--accent-light);
}

/* Responsive */
@media (max-width: 1024px) {
  .level-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .benefit-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .process-arrow {
    display: none;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .security-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
}
@media (max-width: 768px) {
  .nav-left, .nav-right {
    display: none;
  }
  .menu-toggle {
    display: flex;
  }
  .header-inner {
    justify-content: space-between;
  }
  .brand {
    font-size: 18px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
  .brand em {
    display: none;
  }
  .page-hero {
    padding: 80px 0 64px;
  }
  .page-hero h1 {
    font-size: 30px;
  }
  .page-hero p {
    font-size: 15px;
  }
  .section {
    padding: 64px 0;
  }
  .section-title {
    font-size: 26px;
  }
  .level-grid {
    grid-template-columns: 1fr;
  }
  .benefit-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cta-band {
    padding: 40px 28px;
    flex-direction: column;
    text-align: center;
  }
  .cta-actions {
    justify-content: center;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px 16px;
  }
  .stat-item .stat-num {
    font-size: 32px;
  }
}
@media (max-width: 520px) {
  .brand span {
    display: none;
  }
  .page-hero h1 {
    font-size: 26px;
  }
  .hero-meta {
    gap: 12px;
    flex-direction: column;
  }
  .intro-features {
    grid-template-columns: 1fr;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .btn-large {
    padding: 12px 26px;
    font-size: 15px;
  }
}