/* roulang page: index */
/* ========== Design Variables ========== */
:root {
  --green-900: #14241A;
  --green-800: #1F3D2B;
  --green-700: #2A5040;
  --green-600: #35604C;
  --gold: #C6A664;
  --gold-dark: #A8853F;
  --gold-light: #E0C590;
  --bg: #FAF7F2;
  --bg-soft: #F3EDE3;
  --white: #FFFFFF;
  --text-main: #1E2A24;
  --text-body: #46564C;
  --text-muted: #7C8A81;
  --border: #E6DED2;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 28px rgba(0,0,0,0.07);
  --shadow-lg: 0 18px 48px rgba(0,0,0,0.10);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --container: 1200px;
  --transition: all 0.3s ease;
}

/* ========== Reset & Base ========== */
*, *::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;
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4, h5, h6 { color: var(--text-main); line-height: 1.3; font-weight: 700; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section { width: 100%; }

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(168, 133, 63, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(168, 133, 63, 0.45);
  filter: brightness(1.05);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(168,133,63,0.3); }
.btn-ghost {
  border-color: var(--green-800);
  color: var(--green-800);
  background: transparent;
}
.btn-ghost:hover { background: var(--green-800); color: #fff; }
.btn-ghost:active { background: var(--green-900); }
.btn-outline-light {
  border-color: rgba(255,255,255,0.8);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-sm { padding: 10px 24px; font-size: 14px; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--green-800);
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--green-800), var(--green-600));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 18px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-body);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}
.nav-link:hover { color: var(--gold-dark); }
.nav-link.active { color: var(--green-800); border-bottom-color: var(--gold); }
.nav-btn {
  padding: 10px 24px;
  border-radius: 999px;
  background: var(--green-800);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.nav-btn:hover { background: var(--green-700); transform: translateY(-1px); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--green-800);
  border-radius: 2px;
  transition: var(--transition);
}

/* ========== Hero Bento ========== */
.hero {
  position: relative;
  padding: 88px 0 72px;
  background:
    linear-gradient(135deg, rgba(20, 36, 26, 0.88) 0%, rgba(31, 61, 43, 0.75) 100%),
    url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.hero-bento {
  display: grid;
  grid-template-columns: 1.8fr 1fr;
  gap: 22px;
}
.hero-main {
  grid-column: 1;
  grid-row: 1 / span 2;
  background: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius-lg);
  padding: 48px 44px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-dark);
  background: rgba(198, 166, 100, 0.12);
  border: 1px solid rgba(198, 166, 100, 0.3);
  padding: 6px 16px;
  border-radius: 999px;
  align-self: flex-start;
  margin-bottom: 24px;
}
.hero-main h1 {
  font-size: 42px;
  line-height: 1.3;
  color: var(--green-800);
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero-sub {
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-body);
  margin-bottom: 32px;
  max-width: 560px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}
.hero-trust {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.hero-trust span {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.hero-trust span::before {
  content: "✓";
  color: var(--gold-dark);
  font-weight: 700;
}
.hero-block {
  background: rgba(255, 255, 255, 0.92);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
}
.hero-block:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.block-icon {
  font-size: 30px;
  margin-bottom: 14px;
}
.hero-block h3 {
  font-size: 18px;
  color: var(--green-800);
  margin-bottom: 6px;
}
.hero-block p {
  font-size: 14px;
  color: var(--text-body);
  margin-bottom: 12px;
}
.block-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
}
.hero-cta-bar {
  grid-column: 1 / -1;
  background: rgba(255, 255, 255, 0.92);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: var(--shadow-md);
}
.hero-cta-bar p {
  font-size: 15px;
  color: var(--text-main);
  font-weight: 500;
}

/* ========== Section Head ========== */
.section-head {
  text-align: center;
  margin-bottom: 52px;
}
.section-head .sec-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--gold-dark);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.section-head h2 {
  font-size: 34px;
  color: var(--green-800);
  margin-bottom: 14px;
}
.section-head p {
  max-width: 640px;
  margin: 0 auto;
  font-size: 15px;
  color: var(--text-muted);
}

/* ========== Pain Points ========== */
.pain-section { padding: 96px 0; }
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.pain-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.pain-num {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 48px;
  font-weight: 700;
  color: rgba(31, 61, 43, 0.12);
  position: absolute;
  top: 12px;
  right: 20px;
  line-height: 1;
}
.pain-card h3 {
  font-size: 20px;
  color: var(--green-800);
  margin-bottom: 12px;
}
.pain-card p {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.8;
}

/* ========== Solution Grid / Coupon Cards ========== */
.solution-section {
  padding: 96px 0;
  background: var(--bg-soft);
}
.grid-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.coupon-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.coupon-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.card-media {
  position: relative;
  height: 220px;
  overflow: hidden;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.coupon-card:hover .card-media img { transform: scale(1.04); }
.card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.15);
  z-index: 2;
}
.card-body {
  padding: 28px 30px 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-body h3 {
  font-size: 21px;
  color: var(--green-800);
  margin-bottom: 10px;
}
.card-body p {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.75;
  flex: 1;
}
.card-divider {
  border-top: 1px dashed var(--border);
  margin: 20px 0 16px;
}
.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-meta {
  font-size: 13px;
  color: var(--text-muted);
}
.card-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--green-800);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.card-link:hover { color: var(--gold-dark); gap: 8px; }

/* ========== Rules Section ========== */
.rules-section { padding: 96px 0; }
.rules-wrap {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 44px;
  align-items: start;
}
.rules-steps h2 {
  font-size: 30px;
  color: var(--green-800);
  margin-bottom: 36px;
}
.steps-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.step-item {
  display: flex;
  gap: 18px;
  padding: 20px 16px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
}
.step-item:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 34px;
  top: calc(100% - 8px);
  width: 2px;
  height: 24px;
  background: repeating-linear-gradient(to bottom, var(--gold) 0 4px, transparent 4px 8px);
}
.step-item:hover { background: var(--bg-soft); }
.step-num {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--green-800), var(--green-600));
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(31, 61, 43, 0.25);
}
.step-item h4 {
  font-size: 17px;
  color: var(--green-800);
  margin-bottom: 4px;
}
.step-item p {
  font-size: 14px;
  color: var(--text-muted);
}
.rules-notes {
  background: linear-gradient(145deg, var(--green-800), var(--green-700));
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  color: rgba(255,255,255,0.9);
  box-shadow: var(--shadow-md);
}
.rules-notes h3 {
  color: #fff;
  font-size: 22px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.rules-notes ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.rules-notes li {
  font-size: 14px;
  line-height: 1.7;
  display: flex;
  gap: 8px;
}
.rules-notes li::before {
  content: "·";
  color: var(--gold);
  font-size: 18px;
  line-height: 1.4;
}

/* ========== Stats Section ========== */
.stats-section { padding: 30px 0 96px; }
.stats-panel {
  background: linear-gradient(135deg, var(--green-800) 0%, var(--green-600) 100%);
  border-radius: var(--radius-lg);
  padding: 48px 40px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.stats-panel::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(198, 166, 100, 0.15);
}
.stats-panel::after {
  content: "";
  position: absolute;
  bottom: -60px;
  left: 30px;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
}
.stat-item { position: relative; z-index: 1; }
.stat-num {
  display: block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 44px;
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
}

/* ========== Testimonials ========== */
.testi-section { padding: 96px 0; background: var(--bg); }
.testi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.testi-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.testi-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.stars {
  color: var(--gold);
  font-size: 16px;
  letter-spacing: 3px;
  margin-bottom: 16px;
}
.testi-card blockquote {
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-body);
  flex: 1;
  margin-bottom: 20px;
  font-style: normal;
}
.testi-source {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 16px;
}
.testi-source .region-tag {
  background: var(--green-800);
  color: #fff;
  font-size: 12px;
  padding: 3px 12px;
  border-radius: 999px;
  display: inline-block;
}

/* ========== News Section ========== */
.news-section {
  padding: 96px 0;
  background: var(--bg-soft);
}
.news-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 40px;
  align-items: start;
}
.news-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.news-item {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 26px 28px;
  transition: var(--transition);
}
.news-item:hover {
  border-color: var(--gold);
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}
.news-cat {
  display: inline-block;
  background: rgba(198, 166, 100, 0.15);
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.news-item h4 {
  font-size: 18px;
  color: var(--text-main);
  margin-bottom: 8px;
  transition: var(--transition);
}
.news-item:hover h4 { color: var(--green-800); }
.news-item p {
  font-size: 14px;
  color: var(--text-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}
.news-date {
  font-size: 13px;
  color: var(--text-muted);
}
.news-empty {
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 48px 24px;
  text-align: center;
  color: var(--text-muted);
  font-size: 15px;
}
.aside-card {
  background: linear-gradient(145deg, var(--green-800), var(--green-600));
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  color: rgba(255,255,255,0.9);
  box-shadow: var(--shadow-md);
}
.aside-card h4 {
  color: #fff;
  font-size: 20px;
  margin-bottom: 12px;
}
.aside-card p {
  font-size: 14px;
  line-height: 1.75;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.8);
}

/* ========== FAQ ========== */
.faq-section { padding: 96px 0; }
.faq-list {
  max-width: 780px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item summary {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  padding: 22px 16px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 24px;
  font-weight: 400;
  color: var(--gold-dark);
  transition: transform 0.3s ease;
  line-height: 1;
}
.faq-item[open] summary::after {
  transform: rotate(45deg);
}
.faq-item summary:hover { color: var(--green-800); }
.faq-item[open] summary {
  color: var(--green-800);
  border-bottom: 2px solid var(--gold);
}
.faq-answer {
  padding: 8px 16px 24px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-body);
}

/* ========== Final CTA ========== */
.cta-section { padding: 30px 0 96px; }
.cta-panel {
  background: linear-gradient(135deg, var(--green-800) 0%, #1A4634 100%);
  border-radius: var(--radius-lg);
  padding: 68px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-panel::before {
  content: "";
  position: absolute;
  top: -60px;
  left: -60px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(198, 166, 100, 0.12);
}
.cta-panel::after {
  content: "";
  position: absolute;
  bottom: -40px;
  right: -20px;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
}
.cta-panel h2 {
  color: #fff;
  font-size: 38px;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}
.cta-panel p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  position: relative;
  z-index: 1;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-top: 32px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.cta-note {
  margin-top: 28px;
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  position: relative;
  z-index: 1;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--green-900);
  color: rgba(255,255,255,0.72);
  padding-top: 72px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer-brand h3 {
  color: #fff;
  font-size: 19px;
  margin-bottom: 14px;
}
.footer-brand p {
  line-height: 1.8;
  color: rgba(255,255,255,0.6);
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 16px;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.6);
  margin-bottom: 8px;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--gold); }
.footer-col p {
  line-height: 1.8;
  color: rgba(255,255,255,0.55);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ========== Responsive ========== */
@media (max-width: 960px) {
  .hero-main { padding: 36px 32px; }
  .hero-main h1 { font-size: 34px; }
  .pain-grid { grid-template-columns: 1fr 1fr; }
  .grid-cards { grid-template-columns: 1fr 1fr; gap: 20px; }
  .rules-wrap { grid-template-columns: 1fr; gap: 32px; }
  .stats-panel { grid-template-columns: repeat(2, 1fr); padding: 36px 24px; }
  .testi-grid { grid-template-columns: 1fr 1fr; }
  .news-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .header-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    flex-direction: column;
    align-items: flex-start;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    display: none;
  }
  .header-nav.open { display: flex; }
  .hero { padding: 60px 0 48px; }
  .hero-bento { grid-template-columns: 1fr; }
  .hero-main { grid-column: 1; grid-row: auto; }
  .hero-block { grid-column: 1; }
  .hero-cta-bar { grid-column: 1; flex-direction: column; text-align: center; }
  .section-head h2 { font-size: 28px; }
  .pain-section, .solution-section, .rules-section, .testi-section, .news-section, .faq-section { padding: 64px 0; }
  .pain-grid { grid-template-columns: 1fr; }
  .grid-cards { grid-template-columns: 1fr; }
  .testi-grid { grid-template-columns: 1fr; }
  .stats-section { padding: 20px 0 64px; }
  .stats-panel { grid-template-columns: 1fr 1fr; }
  .cta-panel { padding: 48px 28px; }
  .cta-panel h2 { font-size: 30px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .logo { font-size: 17px; }
  .hero-main { padding: 30px 22px; }
  .hero-main h1 { font-size: 28px; }
  .hero-sub { font-size: 15px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; }
  .stats-panel { grid-template-columns: 1fr; }
  .card-body { padding: 22px 20px 18px; }
  .cta-actions { flex-direction: column; }
}

/* roulang page: article */
/* ========== Design Variables ========== */
:root {
  --green-900: #14241A;
  --green-800: #1F3D2B;
  --green-700: #2A5040;
  --green-600: #35604C;
  --gold: #C6A664;
  --gold-dark: #A8853F;
  --gold-light: #E0C590;
  --bg: #FAF7F2;
  --bg-soft: #F3EDE3;
  --white: #FFFFFF;
  --text-main: #1E2A24;
  --text-body: #46564C;
  --text-muted: #7C8A81;
  --border: #E6DED2;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.04);
  --shadow-md: 0 8px 28px rgba(0,0,0,0.07);
  --shadow-lg: 0 18px 48px rgba(0,0,0,0.10);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 10px;
  --container: 1200px;
  --transition: all 0.3s ease;
}
html { scroll-behavior: smooth; }
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text-body);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section { width: 100%; }

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-primary {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
  color: #fff;
  box-shadow: 0 4px 16px rgba(168, 133, 63, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(168, 133, 63, 0.45);
  filter: brightness(1.05);
}
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(168,133,63,0.3); }
.btn-ghost {
  border-color: var(--green-800);
  color: var(--green-800);
  background: transparent;
}
.btn-ghost:hover { background: var(--green-800); color: #fff; }
.btn-ghost:active { background: var(--green-900); }
.btn-outline-light {
  border-color: rgba(255,255,255,0.8);
  color: #fff;
  background: transparent;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.12); border-color: #fff; }
.btn-outline-light:active { background: rgba(255,255,255,0.22); }
.btn-sm { padding: 10px 24px; font-size: 14px; }
a:focus-visible, button:focus-visible, summary:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ========== Header / Nav ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 247, 242, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--green-800);
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--green-800), var(--green-600));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 18px;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-link {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-body);
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}
.nav-link:hover { color: var(--gold-dark); }
.nav-link.active { color: var(--green-800); border-bottom-color: var(--gold); }
.nav-btn {
  padding: 10px 24px;
  border-radius: 999px;
  background: var(--green-800);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.nav-btn:hover { background: var(--green-700); transform: translateY(-1px); }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--green-800);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== Article Hero ========== */
.article-hero {
  position: relative;
  padding: 64px 0 56px;
  background:
    linear-gradient(180deg, rgba(243,237,227,0.94) 0%, rgba(250,247,242,0.98) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
}
.article-hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-muted); transition: var(--transition); }
.breadcrumb a:hover { color: var(--gold-dark); }
.breadcrumb-sep { color: var(--gold); font-weight: 700; }
.article-hero-info h1 {
  font-size: 38px;
  line-height: 1.35;
  color: var(--green-800);
  margin-bottom: 18px;
  letter-spacing: 0.5px;
  font-weight: 700;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 18px;
}
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.meta-item::before {
  content: "·";
  color: var(--gold-dark);
  font-weight: 700;
}
.meta-item:first-child::before { content: ""; }
.article-hero-desc {
  font-size: 16px;
  color: var(--text-body);
  line-height: 1.85;
  margin-bottom: 28px;
  max-width: 560px;
}
.article-hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.article-hero-cover {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.article-hero-cover img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}
.cover-tag {
  position: absolute;
  top: 18px;
  left: 18px;
  background: rgba(20, 36, 26, 0.82);
  color: var(--gold);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}
.cover-stat {
  position: absolute;
  right: 18px;
  bottom: 18px;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: #fff;
  font-size: 14px;
  font-weight: 700;
  text-align: center;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  line-height: 1.3;
  box-shadow: var(--shadow-md);
}
.cover-stat b { font-size: 22px; display: block; }

/* ========== Article Body ========== */
.article-main {
  padding: 72px 0 12px;
}
.article-layout {
  max-width: 760px;
  margin: 0 auto;
}
.article-body {
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.9;
}
.article-body h2 {
  font-size: 26px;
  color: var(--green-800);
  margin: 48px 0 18px;
  padding-left: 14px;
  border-left: 4px solid var(--gold);
  line-height: 1.4;
}
.article-body h3 {
  font-size: 20px;
  color: var(--green-800);
  margin: 36px 0 14px;
  line-height: 1.5;
}
.article-body p {
  margin-bottom: 20px;
}
.article-body ul,
.article-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
}
.article-body ul li {
  position: relative;
  padding-left: 8px;
  margin-bottom: 8px;
}
.article-body ul li::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
}
.article-body ol { list-style: decimal; }
.article-body ol li { padding-left: 4px; margin-bottom: 8px; }
.article-body blockquote {
  border-left: 4px solid var(--gold);
  background: var(--bg-soft);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 28px 0;
  color: var(--text-main);
  font-size: 16px;
  font-style: italic;
}
.article-body img {
  border-radius: var(--radius-md);
  margin: 28px 0;
  box-shadow: var(--shadow-sm);
}
.article-body a {
  color: var(--gold-dark);
  border-bottom: 1px solid rgba(168, 133, 63, 0.3);
  transition: var(--transition);
}
.article-body a:hover { color: var(--green-800); border-bottom-color: var(--green-800); }

/* ========== Article Inline CTA ========== */
.article-cta {
  margin: 48px 0 32px;
  padding: 36px 32px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--green-800) 0%, var(--green-700) 100%);
  color: #fff;
  text-align: center;
}
.article-cta h3 {
  font-size: 22px;
  color: #fff;
  margin-bottom: 10px;
}
.article-cta p {
  font-size: 15px;
  color: rgba(255,255,255,0.82);
  margin-bottom: 20px;
}

/* ========== Related ========== */
.related-section {
  padding: 72px 0 88px;
}
.related-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.related-head h2 {
  font-size: 28px;
  color: var(--green-800);
}
.link-more {
  font-size: 14px;
  color: var(--gold-dark);
  font-weight: 600;
  transition: var(--transition);
}
.link-more:hover { color: var(--green-800); margin-right: -4px; }
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}
.related-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(198, 166, 100, 0.4);
}
.related-tag {
  display: inline-flex;
  align-self: flex-start;
  background: rgba(198, 166, 100, 0.14);
  color: var(--gold-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
}
.related-card h3 {
  font-size: 17px;
  color: var(--green-800);
  line-height: 1.5;
  transition: var(--transition);
}
.related-card:hover h3 { color: var(--gold-dark); }
.related-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ========== CTA Section ========== */
.cta-section {
  background: linear-gradient(135deg, var(--green-900) 0%, var(--green-700) 100%);
  padding: 88px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -60px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: rgba(198, 166, 100, 0.08);
}
.cta-section::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: -80px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(255,255,255,0.04);
}
.cta-inner { position: relative; z-index: 1; }
.cta-inner h2 {
  font-size: 32px;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.cta-inner > p {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.8;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 22px;
}
.cta-note {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
}

/* ========== Not Found ========== */
.not-found-section {
  padding: 120px 0;
  text-align: center;
}
.not-found-wrap h1 {
  font-size: 40px;
  color: var(--green-800);
  margin-bottom: 16px;
}
.not-found-wrap p {
  font-size: 16px;
  color: var(--text-body);
  margin-bottom: 32px;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--green-900);
  color: rgba(255,255,255,0.75);
  padding: 72px 0 28px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand h3 {
  font-size: 20px;
  color: #fff;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.footer-brand p {
  line-height: 1.8;
  color: rgba(255,255,255,0.65);
  max-width: 320px;
}
.footer-col h4 {
  font-size: 16px;
  color: var(--gold);
  margin-bottom: 16px;
  font-weight: 600;
}
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.7);
  padding: 5px 0;
  transition: var(--transition);
}
.footer-col a:hover { color: var(--gold); padding-left: 4px; }
.footer-col p {
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  text-align: center;
  color: rgba(255,255,255,0.5);
  font-size: 13px;
}

/* ========== Responsive ========== */
@media (max-width: 960px) {
  .article-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .article-hero-cover img { height: 260px; }
  .related-grid { grid-template-columns: 1fr; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  .header-nav {
    position: fixed;
    top: 72px;
    right: 0;
    flex-direction: column;
    background: var(--white);
    width: 280px;
    padding: 28px;
    gap: 18px;
    border-radius: 0 0 0 var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    align-items: flex-start;
    border-bottom: 1px solid var(--border);
    border-left: 1px solid var(--border);
  }
  .header-nav.open { transform: translateX(0); }
  .nav-toggle { display: flex; }
  .article-hero { padding: 40px 0 36px; }
  .article-hero-info h1 { font-size: 30px; }
  .article-main { padding-top: 48px; }
  .cta-section { padding: 64px 0; }
  .cta-inner h2 { font-size: 26px; }
  .not-found-section { padding: 80px 0; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-grid .footer-brand { margin-bottom: 8px; }
  .related-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  .article-hero-actions .btn { width: 100%; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { width: 100%; }
}