/* roulang page: index */
/* ===== Design Tokens ===== */
:root {
  --color-primary: #0E6B5C;
  --color-primary-dark: #095348;
  --color-ink: #1A2A26;
  --color-gold: #C3A15F;
  --color-cta: #963A3A;
  --color-cta-dark: #7E2E2E;
  --color-bg: #F6F3EC;
  --color-card: #FFFFFF;
  --color-border: #E3DED2;
  --color-text: #2A3733;
  --color-muted: #6D7A76;
  --radius: 16px;
  --radius-sm: 8px;
  --shadow-card: 0 6px 24px rgba(26,42,38,0.08);
  --shadow-hover: 0 10px 32px rgba(14,107,92,0.15);
  --font-head: "Noto Serif SC", "Songti SC", STSong, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color 0.3s ease; }
a:hover { color: var(--color-primary-dark); }
button { font-family: var(--font-body); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { font-family: var(--font-head); color: var(--color-text); line-height: 1.3; margin: 0; }
p { margin: 0; }
section[id], div[id] { scroll-margin-top: 88px; }

/* ===== Layout ===== */
.container, .grid-container { max-width: 1200px; width: 100%; margin: 0 auto; }
.grid-container { padding-left: 24px; padding-right: 24px; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(246, 243, 236, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 72px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  width: auto;
  max-width: 180px;
}
.brand-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
}
.brand-text {
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.2;
  white-space: nowrap;
}
.brand:hover .brand-text { color: var(--color-primary); }
.site-nav {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  justify-content: center;
  overflow-x: auto;
  scrollbar-width: none;
  white-space: nowrap;
}
.site-nav::-webkit-scrollbar { display: none; }
.chip {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary);
  background: transparent;
  border: 1px solid transparent;
  transition: all 0.3s ease;
  cursor: pointer;
  line-height: 1.2;
}
.chip:hover {
  background: rgba(14, 107, 92, 0.12);
  color: var(--color-primary);
}
.chip.is-active {
  background: var(--color-primary);
  color: #fff;
}
.chip.is-active:hover {
  background: var(--color-primary-dark);
  color: #fff;
}
.nav-cat-link { display: none; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.header-cat-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  background: #fff;
  padding: 7px 14px;
  border-radius: 999px;
  transition: all 0.3s ease;
}
.header-cat-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(14,107,92,0.04);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: #fff;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  cursor: pointer;
  transition: border-color 0.3s ease;
}
.nav-toggle:hover { border-color: var(--color-primary); }
.nav-toggle span {
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
  display: block;
}
.nav-toggle.is-active span:nth-child(1) { transform: translateY(3px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { opacity: 0; }
.nav-toggle.is-active span:nth-child(3) { transform: translateY(-3px) rotate(-45deg); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 48px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-body);
  line-height: 1.2;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: all 0.3s ease;
  outline: none;
}
.btn-primary {
  background: var(--color-cta);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-cta-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(150, 58, 58, 0.28);
}
.btn-primary:active {
  background: #672626;
  transform: translateY(0);
  box-shadow: none;
}
.btn-primary:focus-visible { outline: 2px solid var(--color-gold); outline-offset: 2px; }
.btn-secondary {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
  transform: translateY(-1px);
}
.btn-secondary:active { background: var(--color-primary-dark); transform: translateY(0); }
.btn-secondary:focus-visible { outline: 2px solid var(--color-gold); outline-offset: 2px; }
.btn-block { width: 100%; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-outline-light {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: #fff;
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: #fff;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  padding: 96px 0 96px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(26, 42, 38, 0.72);
}
.hero::after {
  content: '';
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  border: 1px solid rgba(195, 161, 95, 0.6);
  bottom: -100px;
  left: -80px;
  opacity: 0.06;
  pointer-events: none;
}
.hero .grid-container { position: relative; z-index: 1; }
.hero .hero-content {
  max-width: 520px;
}
.hero h1 {
  font-size: 44px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero-sub {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 28px;
  max-width: 440px;
}
.hero-points {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
}
.hero-points li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  color: rgba(255, 255, 255, 0.9);
}
.hero-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold);
}
.login-card {
  background: var(--color-card);
  border-radius: var(--radius);
  box-shadow: 0 16px 48px rgba(10, 20, 18, 0.28);
  padding: 36px 32px 32px;
  position: relative;
}
.badge-welcome {
  display: inline-flex;
  align-items: center;
  background: rgba(14, 107, 92, 0.1);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.login-card h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--color-text);
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.form-group input {
  width: 100%;
  height: 46px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  font-size: 15px;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  transition: all 0.3s ease;
}
.form-group input::placeholder { color: #9AA6A2; }
.form-group input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(14, 107, 92, 0.18);
}
.form-links {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  font-size: 13px;
}
.form-links a { color: var(--color-primary); font-weight: 500; }
.form-links a:hover { color: var(--color-cta); }

/* ===== Section Common ===== */
.section { padding: 80px 0; }
.section-head { margin-bottom: 48px; max-width: 640px; }
.section-head h2 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--color-ink);
}
.section-head p {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.7;
}
.section-head-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  max-width: none;
  flex-wrap: wrap;
}
.section-head-row h2 { margin-bottom: 0; }

/* ===== Feature ===== */
.feature-section { background: var(--color-bg); }
.feature-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 24px;
}
.feature-card {
  border-radius: 20px;
  padding: 40px 36px;
  min-height: 260px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
  overflow: hidden;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.feature-card:nth-child(1),
.feature-card:nth-child(2) { grid-column: span 3; }
.feature-card:nth-child(3) { grid-column: 2 / span 4; }
.feature-card-green {
  background: var(--color-primary);
  color: #fff;
}
.feature-card-dark {
  background: var(--color-ink);
  color: #fff;
}
.feature-card-gold {
  background: #FAF3E4;
  border: 1px solid rgba(195, 161, 95, 0.28);
  color: var(--color-text);
}
.feature-card-green h3,
.feature-card-dark h3 { color: #fff; }
.feature-card-gold h3 { color: var(--color-ink); }
.feature-card h3 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}
.feature-card p {
  font-size: 15px;
  line-height: 1.75;
  opacity: 0.88;
  max-width: 420px;
}
.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  background: rgba(255, 255, 255, 0.14);
  color: var(--color-gold);
}
.feature-card-gold .feature-icon {
  background: rgba(195, 161, 95, 0.16);
  color: var(--color-cta);
}

/* ===== Demo ===== */
.demo-section { background: var(--color-card); }
.demo-section .grid-x { align-items: center; }
.demo-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  line-height: 0;
}
.demo-image img { width: 100%; height: auto; object-fit: cover; border-radius: 20px; }
.demo-content { padding-left: 40px; }
.demo-content h2 {
  font-size: 34px;
  font-weight: 700;
  margin-bottom: 28px;
  color: var(--color-ink);
}
.steps-list { margin: 0; }
.steps-list li {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-border);
}
.steps-list li:last-child { border-bottom: none; }
.step-num {
  font-family: var(--font-head);
  font-size: 52px;
  font-weight: 700;
  color: var(--color-cta);
  line-height: 1;
  min-width: 64px;
}
.step-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--color-text);
}
.step-body p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.6;
}

/* ===== Evidence ===== */
.evidence-section { background: var(--color-bg); }
.evidence-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 880px;
  margin: 0 auto;
}
.evidence-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 36px 24px;
  text-align: center;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.evidence-item:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.evidence-item:nth-child(1) { grid-column: 2 / span 2; }
.evidence-item:nth-child(2) { grid-column: 1 / span 2; }
.evidence-item:nth-child(3) { grid-column: 3 / span 2; }
.evidence-item:nth-child(4) { grid-column: 2 / span 2; }
.evidence-num {
  display: block;
  font-family: var(--font-head);
  font-size: 40px;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 6px;
}
.evidence-label {
  font-size: 14px;
  color: var(--color-muted);
}

/* ===== News ===== */
.news-section { background: var(--color-card); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all 0.3s ease;
  height: 100%;
}
.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.news-card > a { display: flex; flex-direction: column; height: 100%; color: inherit; }
.news-thumb {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--color-bg);
  line-height: 0;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.04); }
.news-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.news-body h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 8px;
  color: var(--color-text);
  transition: color 0.3s ease;
}
.news-card:hover .news-body h3 { color: var(--color-primary); }
.news-body p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--color-muted);
  border-top: 1px solid var(--color-border);
  padding-top: 14px;
}
.news-meta time { font-size: 13px; }
.read-more {
  font-weight: 600;
  color: var(--color-primary);
  font-size: 13px;
}
.news-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 48px 24px;
  background: var(--color-bg);
  border: 1px dashed var(--color-border);
  border-radius: 18px;
  color: var(--color-muted);
}
.badge {
  display: inline-flex;
  align-items: center;
  background: rgba(14, 107, 92, 0.1);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
  width: fit-content;
}

/* ===== Price ===== */
.price-section { background: var(--color-bg); }
.price-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: start;
}
.price-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}
.price-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.price-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}
.price-tag {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
}
.price-num {
  font-family: var(--font-head);
  font-size: 40px;
  font-weight: 700;
  color: var(--color-ink);
  line-height: 1;
}
.price-tag span:last-child { font-size: 14px; color: var(--color-muted); }
.price-card ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
  margin-bottom: 28px;
}
.price-card ul li {
  position: relative;
  padding-left: 22px;
  font-size: 14px;
  color: var(--color-text);
  line-height: 1.6;
}
.price-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-primary);
}
.price-card-featured {
  background: var(--color-primary);
  border-color: var(--color-primary);
  transform: translateY(-8px);
  box-shadow: 0 16px 40px rgba(14, 107, 92, 0.22);
}
.price-card-featured:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 48px rgba(14, 107, 92, 0.28);
}
.price-card-featured h3 { color: #fff; }
.price-card-featured .price-num { color: #fff; }
.price-card-featured .price-tag { border-bottom-color: rgba(255,255,255,0.2); }
.price-card-featured .price-tag span:last-child { color: rgba(255,255,255,0.72); }
.price-card-featured ul li { color: rgba(255,255,255,0.9); }
.price-card-featured ul li::before { background: var(--color-gold); }

/* ===== FAQ ===== */
.faq-section { background: var(--color-card); }
.custom-accordion { list-style: none; margin: 0; }
.custom-accordion .accordion-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  box-shadow: var(--shadow-card);
  margin-bottom: 16px;
  overflow: hidden;
  position: relative;
  transition: box-shadow 0.3s ease;
}
.custom-accordion .accordion-item:hover { box-shadow: var(--shadow-hover); }
.custom-accordion .accordion-item.is-active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-cta);
  z-index: 1;
}
.custom-accordion .accordion-title {
  background: transparent;
  border-bottom: 0;
  padding: 22px 28px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  transition: color 0.3s ease, background 0.3s ease;
}
.custom-accordion .accordion-title:hover {
  background: rgba(14, 107, 92, 0.03);
  color: var(--color-primary);
}
.custom-accordion .accordion-item.is-active .accordion-title { color: var(--color-primary); }
.custom-accordion .accordion-content {
  background: transparent;
  border-bottom: 0;
  color: var(--color-muted);
  padding: 0 28px 24px;
  font-size: 15px;
  line-height: 1.8;
}
.custom-accordion .accordion-content p { margin: 0; }

/* ===== CTA ===== */
.cta-section { background: var(--color-bg); }
.cta-box {
  background: var(--color-ink);
  border-radius: 28px;
  padding: 64px 40px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-box h2 {
  font-size: 34px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.cta-box p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.8);
  max-width: 520px;
  margin: 0 auto 32px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 56px 0 0;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}
.footer-brand .brand-text { color: #fff; font-size: 16px; }
.footer-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.66);
  line-height: 1.7;
  max-width: 240px;
}
.site-footer h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}
.site-footer ul li {
  margin-bottom: 10px;
}
.site-footer ul li a {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  transition: color 0.3s ease;
}
.site-footer ul li a:hover { color: var(--color-gold); }
.site-footer .footer-contact li {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.72);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 20px 0;
  margin-top: 40px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

/* ===== Floating CTA ===== */
.floating-login {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-cta);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  font-family: var(--font-body);
  box-shadow: 0 8px 24px rgba(150, 58, 58, 0.35);
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s ease;
  letter-spacing: 1px;
}
.floating-login:hover {
  background: var(--color-cta-dark);
  color: #fff;
  transform: translateY(-2px) scale(1.04);
}
.floating-login.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (min-width: 768px) and (max-width: 1023px) {
  .hero { padding: 72px 0; }
  .hero h1 { font-size: 36px; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 28px; }
  .demo-content { padding-left: 0; margin-top: 32px; }
  .feature-card { padding: 32px 28px; }
  .feature-card:nth-child(1),
  .feature-card:nth-child(2) { grid-column: span 3; }
  .feature-card:nth-child(3) { grid-column: span 6; }
  .evidence-grid { max-width: 100%; grid-template-columns: repeat(2, 1fr); }
  .evidence-item:nth-child(n) { grid-column: auto; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: repeat(3, 1fr); gap: 16px; }
  .price-card { padding: 28px 22px; }
  .price-num { font-size: 32px; }
  .cta-box { padding: 48px 28px; }
}

@media (max-width: 767px) {
  .grid-container { padding-left: 16px; padding-right: 16px; }
  .header-inner { height: 60px; gap: 12px; }
  .brand-text { font-size: 13px; }
  .brand-icon { width: 30px; height: 30px; }
  .header-cat-link { display: none; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 12px 24px rgba(26, 42, 38, 0.1);
    display: none;
    flex-direction: row;
    overflow-x: auto;
    padding: 12px 16px;
    gap: 8px;
    white-space: nowrap;
    scrollbar-width: none;
    z-index: 119;
  }
  .site-nav.is-open { display: flex; }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav .chip { flex-shrink: 0; }
  .nav-cat-link { display: inline-flex; }
  .nav-toggle { display: inline-flex; }
  .header-actions { gap: 8px; }
  .btn-sm { padding: 8px 16px; font-size: 13px; }
  .hero { padding: 56px 0 64px; }
  .hero h1 { font-size: 32px; }
  .hero-sub { font-size: 16px; }
  .hero-points { margin-bottom: 36px; }
  .login-card { padding: 28px 22px; }
  .section { padding: 48px 0; }
  .section-head { margin-bottom: 32px; }
  .section-head h2 { font-size: 26px; }
  .section-head p { font-size: 15px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card:nth-child(1),
  .feature-card:nth-child(2),
  .feature-card:nth-child(3) { grid-column: auto; }
  .feature-card { padding: 28px 24px; min-height: 0; }
  .demo-content { padding-left: 0; margin-top: 28px; }
  .demo-content h2 { font-size: 26px; }
  .steps-list li { gap: 16px; padding: 18px 0; }
  .step-num { font-size: 44px; min-width: 52px; }
  .evidence-grid { grid-template-columns: 1fr; }
  .evidence-item:nth-child(n) { grid-column: auto; }
  .evidence-num { font-size: 34px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-empty { grid-column: auto; }
  .price-grid { grid-template-columns: 1fr; }
  .price-card-featured { transform: none; }
  .price-card-featured:hover { transform: translateY(-2px); }
  .custom-accordion .accordion-title { padding: 18px 20px; font-size: 16px; }
  .custom-accordion .accordion-content { padding: 0 20px 20px; }
  .cta-box { padding: 40px 20px; }
  .cta-box h2 { font-size: 26px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { width: 100%; }
  .site-footer { padding-top: 40px; }
  .footer-bottom { margin-top: 28px; }
  .floating-login { right: 16px; bottom: 16px; }
}

/* roulang page: category1 */
:root {
            --color-primary: #0E6B5C;
            --color-primary-dark: #095348;
            --color-ink: #1A2A26;
            --color-gold: #C3A15F;
            --color-cta: #963A3A;
            --color-bg: #F6F3EC;
            --color-card: #FFFFFF;
            --color-border: #E3DED2;
            --color-text: #2A3733;
            --color-muted: #6D7A76;
            --radius-card: 16px;
            --radius-btn: 48px;
            --shadow-card: 0 6px 24px rgba(26, 42, 38, 0.08);
            --shadow-hover: 0 10px 32px rgba(14, 107, 92, 0.15);
            --font-title: "Noto Serif SC", "Songti SC", STSong, serif;
            --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            --space-section: 80px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color .25s ease;
        }

        a:hover {
            color: var(--color-primary-dark);
        }

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

        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ---------- Header ---------- */
        .site-header {
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 72px;
            gap: 12px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            display: inline-flex;
            flex-shrink: 0;
        }

        .brand-text {
            font-family: var(--font-title);
            font-weight: 700;
            font-size: 18px;
            color: var(--color-ink);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            scrollbar-width: none;
            padding: 4px 0;
        }

        .site-nav::-webkit-scrollbar {
            display: none;
        }

        .site-nav .chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            background: transparent;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: background .25s, color .25s, border-color .25s;
        }

        .site-nav .chip:hover {
            background: rgba(14, 107, 92, 0.15);
        }

        .site-nav .chip.is-active {
            background: var(--color-primary);
            color: #fff;
        }

        .site-nav .chip.is-active:hover {
            background: var(--color-primary-dark);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .header-cat-link {
            display: none;
            font-size: 14px;
            color: var(--color-primary);
            padding: 6px 14px;
            border: 1px solid var(--color-border);
            border-radius: 999px;
            white-space: nowrap;
        }

        .header-cat-link:hover {
            border-color: var(--color-primary);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-family: var(--font-body);
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 14px 32px;
            cursor: pointer;
            border: 1px solid transparent;
            transition: all .25s ease;
            line-height: 1.4;
        }

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

        .btn-primary:hover {
            background: #7E2E2E;
            color: #fff;
        }

        .btn-primary:active {
            background: #6a2222;
            transform: scale(0.98);
        }

        .btn-secondary {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }

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

        .btn-sm {
            padding: 9px 22px;
            font-size: 14px;
        }

        .btn-lg {
            padding: 16px 42px;
            font-size: 16px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 10px;
            flex-direction: column;
            gap: 5px;
            align-items: center;
            justify-content: center;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-ink);
            border-radius: 2px;
            transition: all .3s ease;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: var(--color-ink);
            color: rgba(246, 243, 236, 0.8);
            padding: 64px 0 0;
            margin-top: 0;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .site-footer .brand-text {
            color: #fff;
            font-size: 18px;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            opacity: 0.72;
            margin-bottom: 0;
        }

        .site-footer h4 {
            color: #fff;
            font-family: var(--font-title);
            font-size: 16px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .site-footer ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 14px;
        }

        .site-footer ul li a {
            color: rgba(246, 243, 236, 0.72);
            transition: color .25s;
        }

        .site-footer ul li a:hover {
            color: var(--color-gold);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 48px;
            padding: 20px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            opacity: 0.6;
        }

        .footer-bottom p {
            margin: 0;
        }

        /* ---------- Floating CTA ---------- */
        .floating-cta {
            position: fixed;
            right: 28px;
            bottom: 28px;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-cta);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 24px rgba(150, 58, 58, 0.3);
            z-index: 90;
            opacity: 0;
            visibility: hidden;
            transform: translateY(16px);
            transition: all .35s ease;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
        }

        .floating-cta.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .floating-cta:hover {
            background: #7E2E2E;
            transform: translateY(-2px);
        }

        /* ---------- Category Hero ---------- */
        .category-hero {
            background: linear-gradient(135deg, var(--color-ink) 0%, var(--color-primary-dark) 100%);
            padding: 56px 0 72px;
            position: relative;
            overflow: hidden;
            color: #fff;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border: 1px solid rgba(195, 161, 95, 0.25);
            border-radius: 50%;
        }

        .category-hero .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            margin-bottom: 24px;
            opacity: 0.75;
        }

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

        .category-hero .breadcrumb a:hover {
            color: var(--color-gold);
        }

        .category-hero .breadcrumb .sep {
            color: rgba(255, 255, 255, 0.5);
        }

        .category-hero h1 {
            font-family: var(--font-title);
            font-size: 44px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .category-hero .hero-desc {
            font-size: 17px;
            max-width: 560px;
            opacity: 0.88;
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ---------- Sections ---------- */
        .section-block {
            padding: var(--space-section) 0;
        }

        .section-block.alt-bg {
            background: #fff;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--color-gold);
            margin-bottom: 8px;
            font-weight: 600;
        }

        .section-title {
            font-family: var(--font-title);
            font-size: 34px;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-muted);
            max-width: 640px;
            margin-bottom: 40px;
            line-height: 1.75;
        }

        .section-head {
            margin-bottom: 40px;
        }

        /* ---------- Intro Split ---------- */
        .intro-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

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

        .intro-media img {
            width: 100%;
            height: 360px;
            object-fit: cover;
        }

        .intro-media .media-tag {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(14, 107, 92, 0.9);
            color: #fff;
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 999px;
            letter-spacing: 0.04em;
        }

        .intro-content h3 {
            font-family: var(--font-title);
            font-size: 24px;
            color: var(--color-ink);
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .intro-content p {
            font-size: 16px;
            color: var(--color-text);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .intro-content .check-list {
            list-style: none;
            margin: 24px 0 0;
            padding: 0;
        }

        .intro-content .check-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 15px;
            color: var(--color-text);
        }

        .intro-content .check-list li:last-child {
            border-bottom: none;
        }

        .intro-content .check-list i {
            color: var(--color-primary);
            font-size: 15px;
            width: 20px;
            text-align: center;
        }

        /* ---------- Scenario Cards ---------- */
        .scenario-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 28px;
            align-items: stretch;
        }

        .scenario-card {
            background: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            padding: 34px 28px;
            border: 1px solid rgba(227, 222, 210, 0.5);
            transition: transform .3s ease, box-shadow .3s ease;
            position: relative;
        }

        .scenario-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .scenario-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 20px;
            background: rgba(14, 107, 92, 0.1);
            color: var(--color-primary);
        }

        .scenario-card.card-dark {
            background: var(--color-primary);
            color: #fff;
        }

        .scenario-card.card-dark .card-icon {
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
        }

        .scenario-card.card-dark .card-title,
        .scenario-card.card-dark .card-text {
            color: #fff;
        }

        .scenario-card.card-gold {
            background: #FAF6EC;
            border-color: rgba(195, 161, 95, 0.3);
        }

        .scenario-card .card-title {
            font-family: var(--font-title);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-ink);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .scenario-card .card-text {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.75;
            margin-bottom: 0;
        }

        .scenario-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            margin-top: 18px;
        }

        .scenario-card.card-dark .card-link {
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.4);
        }

        .scenario-card .card-link i {
            transition: transform .25s;
        }

        .scenario-card .card-link:hover i {
            transform: translateX(4px);
        }

        /* ---------- Steps ---------- */
        .steps-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .steps-media {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .steps-media img {
            width: 100%;
            height: 400px;
            object-fit: cover;
        }

        .steps-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .steps-list li {
            display: flex;
            gap: 20px;
            padding: 24px 0;
            border-bottom: 1px solid var(--color-border);
        }

        .steps-list li:first-child {
            padding-top: 0;
        }

        .steps-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .step-num {
            font-family: var(--font-title);
            font-size: 42px;
            font-weight: 700;
            color: var(--color-cta);
            line-height: 1;
            min-width: 52px;
            text-align: center;
        }

        .step-content h4 {
            font-family: var(--font-title);
            font-size: 18px;
            color: var(--color-ink);
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ---------- Stats ---------- */
        .stats-section {
            background: var(--color-ink);
            padding: 70px 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .stats-section::after {
            content: "";
            position: absolute;
            left: -80px;
            bottom: -80px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            border: 1px solid rgba(195, 161, 95, 0.2);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            max-width: 800px;
            margin: 0 auto;
        }

        .stat-item {
            text-align: center;
            padding: 28px 20px;
        }

        .stat-item .stat-num {
            font-family: var(--font-title);
            font-size: 48px;
            font-weight: 700;
            color: var(--color-gold);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-item .stat-label {
            font-size: 14px;
            opacity: 0.75;
            letter-spacing: 0.04em;
        }

        /* ---------- Info List ---------- */
        .info-list {
            list-style: none;
            margin: 0;
            padding: 0;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            background: #fff;
            overflow: hidden;
        }

        .info-list li {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            border-bottom: 1px solid var(--color-border);
            transition: background .25s ease;
            flex-wrap: wrap;
        }

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

        .info-list li:hover {
            background: rgba(14, 107, 92, 0.05);
        }

        .info-list .info-date {
            font-size: 13px;
            color: var(--color-muted);
            min-width: 88px;
            flex-shrink: 0;
        }

        .info-list .info-title {
            flex: 1;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            transition: color .25s;
        }

        .info-list li:hover .info-title {
            color: var(--color-primary);
        }

        .info-list .info-tag {
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(14, 107, 92, 0.1);
            color: var(--color-primary);
            font-weight: 500;
            flex-shrink: 0;
        }

        .info-list .info-link {
            font-size: 14px;
            color: var(--color-cta);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap .25s;
        }

        .info-list .info-link:hover {
            gap: 8px;
            color: #7E2E2E;
        }

        /* ---------- FAQ ---------- */
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 16px;
            overflow: hidden;
            position: relative;
            transition: border-color .3s ease, box-shadow .3s ease;
        }

        .faq-item::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--color-cta);
            opacity: 0;
            transition: opacity .3s ease;
        }

        .faq-item.is-open {
            border-color: rgba(150, 58, 58, 0.35);
            box-shadow: var(--shadow-card);
        }

        .faq-item.is-open::before {
            opacity: 1;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 22px 28px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-ink);
            font-family: var(--font-title);
            transition: color .25s;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(14, 107, 92, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--color-primary);
            transition: transform .35s ease, background .35s ease;
            flex-shrink: 0;
        }

        .faq-item.is-open .faq-question .faq-icon {
            transform: rotate(180deg);
            background: var(--color-primary);
            color: #fff;
        }

        .faq-answer {
            padding: 0 28px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .4s ease;
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.8;
        }

        .faq-item.is-open .faq-answer {
            padding: 0 28px 24px;
            max-height: 600px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            background: var(--color-primary);
            padding: 72px 0;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            right: 10%;
            top: -50%;
            width: 260px;
            height: 260px;
            border: 1px solid rgba(195, 161, 95, 0.2);
            border-radius: 50%;
        }

        .cta-section h2 {
            font-family: var(--font-title);
            font-size: 34px;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .cta-section p {
            font-size: 16px;
            opacity: 0.85;
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.7;
        }

        /* ---------- Floating decorative ---------- */
        .deco-circle {
            position: absolute;
            border-radius: 50%;
            pointer-events: none;
        }

        /* ---------- Inputs ---------- */
        .input-field {
            border-radius: 8px;
            border: 1px solid var(--color-border);
            padding: 12px 16px;
            font-family: var(--font-body);
            font-size: 14px;
            background: #fff;
            color: var(--color-text);
            transition: border-color .25s, box-shadow .25s;
            width: 100%;
        }

        .input-field:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(14, 107, 92, 0.18);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1023px) {
            :root {
                --space-section: 64px;
            }

            .site-nav .chip {
                padding: 7px 14px;
                font-size: 13px;
            }

            .brand-text {
                font-size: 16px;
            }

            .intro-split {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .scenario-grid {
                grid-template-columns: 1fr 1fr;
            }

            .scenario-card:first-child {
                grid-column: 1 / -1;
            }

            .steps-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            :root {
                --space-section: 48px;
            }

            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .site-header .header-inner {
                flex-wrap: wrap;
                min-height: 64px;
                padding: 8px 0;
            }

            .brand-text {
                font-size: 15px;
                max-width: 120px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .site-nav {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                padding: 4px 0 8px;
            }

            .header-actions {
                margin-left: auto;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .header-cat-link {
                display: inline-flex;
                font-size: 13px;
                padding: 5px 12px;
            }

            .category-hero {
                padding: 40px 0 52px;
            }

            .category-hero h1 {
                font-size: 32px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .section-title {
                font-size: 26px;
            }

            .scenario-grid {
                grid-template-columns: 1fr;
            }

            .scenario-card:first-child {
                grid-column: auto;
            }

            .stats-grid {
                grid-template-columns: 1fr;
                gap: 8px;
            }

            .stat-item .stat-num {
                font-size: 38px;
            }

            .info-list li {
                padding: 16px 18px;
                gap: 10px;
            }

            .info-list .info-date {
                min-width: auto;
                width: 100%;
                font-size: 12px;
            }

            .info-list .info-title {
                flex: 1 1 calc(100% - 80px);
                font-size: 14px;
            }

            .cta-section {
                padding: 52px 0;
            }

            .cta-section h2 {
                font-size: 26px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 4px;
            }

            .floating-cta {
                right: 18px;
                bottom: 18px;
                width: 50px;
                height: 50px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .intro-media img {
                height: 240px;
            }

            .steps-media img {
                height: 260px;
            }

            .info-list .info-tag {
                display: none;
            }

            .info-list .info-title {
                flex-basis: calc(100% - 60px);
            }

            .btn {
                padding: 12px 24px;
            }
        }

/* roulang page: article */
:root {
  --color-primary: #0E6B5C;
  --color-primary-dark: #095348;
  --color-ink: #1A2A26;
  --color-gold: #C3A15F;
  --color-cta: #963A3A;
  --color-cta-dark: #7E2E2E;
  --color-bg: #F6F3EC;
  --color-card: #FFFFFF;
  --color-border: #E3DED2;
  --color-text: #2A3733;
  --color-muted: #6D7A76;
  --font-head: "Noto Serif SC", "Songti SC", STSong, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --radius-card: 16px;
  --radius-btn: 48px;
  --shadow-card: 0 6px 24px rgba(26, 42, 38, 0.08);
  --shadow-hover: 0 10px 32px rgba(14, 107, 92, 0.15);
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--color-primary-dark); }
h1, h2, h3, h4 { margin-top: 0; }
ul, ol { margin: 0; padding: 0; }
a:focus-visible, button:focus-visible, .chip:focus-visible, .btn:focus-visible { outline: 2px solid var(--color-gold); outline-offset: 3px; }
.grid-container { padding-left: 24px; padding-right: 24px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(246, 243, 236, 0.94);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon { display: inline-flex; flex-shrink: 0; }
.brand-text { font-family: var(--font-head); font-weight: 700; font-size: 18px; line-height: 1.3; color: var(--color-ink); white-space: nowrap; letter-spacing: .01em; }
.site-nav { display: flex; align-items: center; gap: 6px; flex-wrap: nowrap; }
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--color-primary-dark);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .2s ease, color .2s ease;
  white-space: nowrap;
}
.chip:hover { background: rgba(14, 107, 92, 0.14); color: var(--color-primary-dark); }
.chip.active { background: var(--color-primary); color: #fff; }
.chip.active:hover { background: var(--color-primary-dark); color: #fff; }
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.header-cat-link { font-size: 14px; font-weight: 500; color: var(--color-primary); padding: 6px 4px; }
.header-cat-link:hover { color: var(--color-primary-dark); }
.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transition: background .2s ease;
}
.nav-toggle:hover { background: rgba(14, 107, 92, 0.1); }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--color-ink); border-radius: 2px; transition: transform .25s ease, opacity .25s ease; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-btn);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background .2s ease, color .2s ease, box-shadow .2s ease, transform .2s ease;
}
.btn-sm { padding: 10px 22px; font-size: 14px; }
.btn-primary { background: var(--color-cta); color: #fff; box-shadow: 0 4px 14px rgba(150, 58, 58, 0.18); }
.btn-primary:hover { background: var(--color-cta-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 8px 22px rgba(150, 58, 58, 0.28); }
.btn-primary:active { background: #6E2828; transform: translateY(0); }
.btn-secondary { background: transparent; border-color: var(--color-primary); color: var(--color-primary); }
.btn-secondary:hover { background: var(--color-primary); color: #fff; transform: translateY(-1px); }
.btn-secondary:active { background: var(--color-primary-dark); transform: translateY(0); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(14, 107, 92, 0.12);
  color: var(--color-primary-dark);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
}

.breadcrumb-wrap { background: rgba(14, 107, 92, 0.04); border-bottom: 1px solid var(--color-border); padding: 14px 0; }
.breadcrumb { display: flex; align-items: center; flex-wrap: wrap; font-size: 14px; color: var(--color-muted); gap: 4px; }
.breadcrumb a { color: var(--color-primary); }
.breadcrumb a:hover { color: var(--color-primary-dark); }
.breadcrumb .sep { margin: 0 6px; color: var(--color-border); }
.breadcrumb .cur { color: var(--color-text); font-weight: 500; }

.article-main { padding: 0 0 80px; }
.article-head {
  background: var(--color-card);
  padding: 56px 0 44px;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}
.article-head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: .4;
}
.article-head-inner { max-width: 880px; margin: 0 auto; text-align: center; padding: 0 24px; }
.article-title { font-family: var(--font-head); font-size: 40px; line-height: 1.35; color: var(--color-ink); margin: 20px 0 14px; font-weight: 700; }
.article-meta { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 20px; font-size: 14px; color: var(--color-muted); }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }
.article-summary { max-width: 720px; margin: 18px auto 0; font-size: 15px; line-height: 1.8; color: var(--color-muted); }
.head-divider { width: 52px; height: 3px; border-radius: 3px; background: var(--color-gold); margin: 20px auto 0; }

.article-body-wrap { max-width: 760px; margin: 0 auto; padding: 48px 24px 0; }
.article-body-card { background: var(--color-card); border-radius: var(--radius-card); padding: 40px 52px; box-shadow: var(--shadow-card); }
.article-body { font-size: 16px; line-height: 1.95; color: var(--color-text); }
.article-body h2 { font-family: var(--font-head); font-size: 30px; line-height: 1.4; color: var(--color-ink); margin: 40px 0 16px; font-weight: 700; }
.article-body h3 { font-family: var(--font-head); font-size: 22px; line-height: 1.5; color: var(--color-ink); margin: 32px 0 12px; font-weight: 700; }
.article-body p { margin: 0 0 24px; }
.article-body img { border-radius: 12px; margin: 24px 0; }
.article-body blockquote {
  border-left: 4px solid var(--color-gold);
  background: rgba(195, 161, 95, 0.09);
  padding: 16px 24px;
  margin: 24px 0;
  border-radius: 0 12px 12px 0;
  color: var(--color-muted);
}
.article-body blockquote p { margin-bottom: 0; }
.article-body ul, .article-body ol { margin: 0 0 24px; padding-left: 26px; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--color-primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body code { background: rgba(14, 107, 92, 0.1); color: var(--color-primary-dark); padding: 2px 8px; border-radius: 6px; font-size: .92em; }
.article-body pre { background: var(--color-ink); color: #EDEAE0; padding: 24px; border-radius: 12px; overflow-x: auto; line-height: 1.6; margin: 24px 0; }
.article-body pre code { background: transparent; color: inherit; padding: 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-body th, .article-body td { border: 1px solid var(--color-border); padding: 10px 14px; }
.article-body th { background: rgba(14, 107, 92, 0.06); }
.article-body hr { border: 0; border-top: 1px solid var(--color-border); margin: 40px 0; }

.not-found-box { background: var(--color-card); border-radius: var(--radius-card); padding: 48px 32px; text-align: center; box-shadow: var(--shadow-card); }
.not-found-box p { color: var(--color-muted); margin-bottom: 16px; }
.not-found-box .btn { margin-top: 8px; }

.related-section { background: var(--color-card); padding: 80px 0; border-top: 1px solid var(--color-border); }
.section-head { margin-bottom: 32px; }
.section-head h2 { font-family: var(--font-head); font-size: 30px; color: var(--color-ink); margin-bottom: 6px; }
.section-head p { color: var(--color-muted); font-size: 15px; margin: 0; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: var(--color-bg); border-radius: var(--radius-card); overflow: hidden; box-shadow: var(--shadow-card); transition: transform .25s ease, box-shadow .25s ease; display: flex; flex-direction: column; }
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-hover); }
.related-thumb img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.related-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.related-body h3 { font-family: var(--font-head); font-size: 17px; line-height: 1.5; color: var(--color-ink); margin: 0; }
.related-meta { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 10px; border-top: 1px solid var(--color-border); }
.related-date { font-size: 13px; color: var(--color-muted); }
.more-link { font-size: 14px; font-weight: 600; color: var(--color-primary); display: inline-flex; align-items: center; gap: 6px; }
.empty-tip { padding: 24px; text-align: center; color: var(--color-muted); background: var(--color-card); border-radius: var(--radius-card); }

.article-bottom { text-align: center; padding: 56px 24px 0; }

.site-footer {
  background: var(--color-ink);
  color: rgba(246, 243, 236, 0.86);
  padding: 64px 0 24px;
}
.site-footer .brand-text { color: #F6F3EC; }
.site-footer h4 { color: #F6F3EC; font-family: var(--font-head); font-size: 16px; margin-bottom: 16px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 10px; font-size: 14px; }
.site-footer a { color: rgba(246, 243, 236, 0.78); text-decoration: none; }
.site-footer a:hover { color: var(--color-gold); }
.footer-desc { margin-top: 16px; font-size: 14px; color: rgba(246, 243, 236, 0.68); max-width: 260px; }
.footer-bottom {
  border-top: 1px solid rgba(246, 243, 236, 0.12);
  margin-top: 40px;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(246, 243, 236, 0.52);
  gap: 12px;
}
.footer-contact { color: rgba(246, 243, 236, 0.72); }

.float-cta {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-cta);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 24px rgba(150, 58, 58, 0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity .3s ease, transform .3s ease, visibility .3s ease;
  z-index: 60;
}
.float-cta.show { opacity: 1; visibility: visible; transform: translateY(0); }
.float-cta:hover { background: var(--color-cta-dark); color: #fff; transform: translateY(-2px); }

@media (max-width: 1023px) {
  .grid-container { padding-left: 20px; padding-right: 20px; }
  .brand-text { font-size: 16px; }
  .header-cat-link { display: none; }
  .article-title { font-size: 34px; }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 767px) {
  .grid-container { padding-left: 16px; padding-right: 16px; }
  .header-inner { flex-wrap: wrap; padding: 12px 0; }
  .brand-text { font-size: 15px; }
  .site-nav {
    display: none;
    width: 100%;
    order: 4;
    margin-top: 4px;
    padding: 8px 0 2px;
    gap: 8px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .site-nav::-webkit-scrollbar { display: none; }
  .site-nav.open { display: flex; }
  .site-nav .chip { padding: 8px 16px; font-size: 13px; }
  .nav-toggle { display: inline-flex; }
  .header-actions { gap: 8px; }
  .btn-sm { padding: 8px 16px; }
  .article-head { padding: 40px 0 32px; }
  .article-title { font-size: 26px; }
  .article-meta { gap: 14px; font-size: 13px; }
  .article-body-wrap { padding: 28px 18px 0; }
  .article-body-card { padding: 28px 20px; }
  .related-section { padding: 48px 0; }
  .related-grid { grid-template-columns: 1fr; }
  .section-head h2 { font-size: 24px; }
  .article-main { padding-bottom: 48px; }
  .site-footer { padding: 48px 0 20px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .float-cta { right: 16px; bottom: 16px; width: 50px; height: 50px; }
}