/* roulang page: index */
:root {
  --primary: #1B2821;
  --accent: #D6F24E;
  --accent-dark: #c2dd3a;
  --bg: #F4F6F2;
  --card-bg: #FFFFFF;
  --text: #1A211C;
  --text-secondary: #67746C;
  --border: rgba(27, 40, 33, 0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(27, 40, 33, 0.06);
  --shadow-md: 0 4px 16px rgba(27, 40, 33, 0.08);
  --shadow-lg: 0 8px 32px rgba(27, 40, 33, 0.14);
  --space-xl: 96px;
  --space-lg: 64px;
  --space-md: 48px;
  --space-sm: 24px;
  --container-w: 1200px;
  --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-stack);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; outline: none; }

.container { max-width: var(--container-w); margin: 0 auto; padding-left: 24px; padding-right: 24px; }

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: var(--radius-pill); font-weight: 600; font-size: 16px;
  padding: 12px 28px; transition: all 0.25s ease; border: 1px solid transparent; line-height: 1.4;
}
.btn-accent { background: var(--accent); color: #1A211C; box-shadow: 0 2px 10px rgba(214, 242, 78, 0.3); }
.btn-accent:hover { background: var(--accent-dark); box-shadow: 0 6px 20px rgba(214, 242, 78, 0.4); transform: translateY(-2px); }
.btn-accent:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(214, 242, 78, 0.25); }
.btn-outline-light { background: transparent; color: #fff; border-color: rgba(255, 255, 255, 0.6); }
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.1); border-color: #fff; transform: translateY(-2px); }
.btn-outline-light:active { transform: translateY(0); }
.btn-outline-primary { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline-primary:active { transform: translateY(0); }
.btn-block { width: 100%; }
.btn:focus-visible { outline: 3px solid rgba(214, 242, 78, 0.5); outline-offset: 2px; }

/* ===== Badge ===== */
.badge {
  display: inline-block; background: rgba(27, 40, 33, 0.06); color: var(--primary);
  font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 999px; letter-spacing: 0.02em;
}
.badge-accent { background: var(--accent); color: #1A211C; }
.badge-outline { background: transparent; border: 1px solid var(--border); color: var(--text-secondary); }

/* ===== Section common ===== */
.section { padding: var(--space-xl) 0; }
.section-head { margin-bottom: 48px; max-width: 720px; }
.section-tag { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-secondary); margin-bottom: 12px; }
.section-head h2 { font-size: 38px; font-weight: 700; line-height: 1.25; color: var(--primary); margin-bottom: 12px; }
.section-head p { font-size: 17px; color: var(--text-secondary); line-height: 1.7; }
.section-head .accent-line { width: 48px; height: 3px; background: var(--accent); border-radius: 3px; margin-bottom: 18px; }

/* ===== Header / Nav ===== */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: 72px; background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(16px) saturate(160%); -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.18);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: all 0.3s ease;
}
.site-header.is-scrolled {
  height: 64px; background: rgba(27, 40, 33, 0.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg);
}
.nav-container { max-width: var(--container-w); margin: 0 auto; height: 100%; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  display: flex; align-items: flex-end; gap: 3px; width: 32px; height: 32px;
  padding: 5px; background: var(--accent); border-radius: 8px;
}
.brand-mark i { display: block; width: 5px; background: #1A211C; border-radius: 2px; }
.brand-mark i:nth-child(1) { height: 12px; }
.brand-mark i:nth-child(2) { height: 20px; }
.brand-mark i:nth-child(3) { height: 16px; }
.brand-text { font-size: 20px; font-weight: 800; letter-spacing: 0.02em; color: #fff; }
.site-header.is-scrolled .brand-text { color: #fff; }

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-link { color: rgba(255, 255, 255, 0.85); font-size: 15px; font-weight: 500; position: relative; padding: 6px 2px; }
.nav-link::after { content: ''; position: absolute; left: 0; bottom: 0; width: 0; height: 2px; background: var(--accent); transition: width 0.3s ease; }
.nav-link:hover { color: #fff; }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: #fff; font-weight: 600; }
.nav-link.active::after { width: 100%; }
.site-header.is-scrolled .nav-link { color: rgba(255, 255, 255, 0.85); }
.site-header.is-scrolled .nav-link:hover { color: #fff; }

.nav-actions { display: flex; align-items: center; gap: 16px; }
.search-btn {
  width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
  color: #fff; background: transparent; border: 1px solid rgba(255, 255, 255, 0.25); transition: all 0.25s ease;
}
.search-btn:hover { background: rgba(255, 255, 255, 0.15); border-color: rgba(255, 255, 255, 0.4); transform: scale(1.05); }
.search-btn svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; }
.site-header.is-scrolled .search-btn { color: rgba(255, 255, 255, 0.8); }

.nav-search { position: relative; }
.search-dropdown {
  position: absolute; top: calc(100% + 12px); right: 0; width: 320px; padding: 16px;
  background: var(--card-bg); border-radius: 12px; box-shadow: var(--shadow-lg); border: 1px solid var(--border);
  opacity: 0; visibility: hidden; transform: translateY(-8px); transition: all 0.25s ease; z-index: 100;
}
.search-dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.search-dropdown form { display: flex; gap: 8px; }
.search-dropdown input {
  flex: 1; padding: 10px 14px; font-size: 14px; background: #F9FBF8; border: 1px solid var(--border); border-radius: 8px; color: var(--text);
}
.search-dropdown input:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(27, 40, 33, 0.08); }
.search-dropdown button { padding: 10px 16px; background: var(--primary); color: #fff; border-radius: 8px; font-size: 14px; transition: all 0.25s ease; }
.search-dropdown button:hover { background: #24352c; }

.menu-toggle { display: none; width: 40px; height: 40px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; border-radius: 8px; }
.menu-toggle span { display: block; width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: all 0.3s ease; }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Hero ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.webp'); background-size: cover; background-position: center; }
.hero-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(27, 40, 33, 0.88) 0%, rgba(27, 40, 33, 0.55) 55%, rgba(27, 40, 33, 0.3) 100%); }
.hero-content { position: relative; z-index: 2; max-width: 760px; padding-top: 80px; padding-bottom: 40px; }
.hero-eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 0.16em; color: var(--accent); text-transform: uppercase; margin-bottom: 20px; position: relative; padding-left: 24px; }
.hero-eyebrow::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 14px; height: 2px; background: var(--accent); border-radius: 2px; }
.hero-content h1 { font-size: 56px; font-weight: 800; line-height: 1.15; color: #fff; margin-bottom: 20px; letter-spacing: -0.01em; }
.hero-subtitle { font-size: 18px; line-height: 1.75; color: rgba(255, 255, 255, 0.78); max-width: 560px; margin-bottom: 36px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-line { position: absolute; bottom: 80px; left: 0; right: 0; max-width: 1200px; margin: 0 auto; height: 2px; background: linear-gradient(90deg, var(--accent) 0%, rgba(214, 242, 78, 0.3) 40%, transparent 100%); pointer-events: none; }
.scroll-hint { position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%); z-index: 3; display: flex; flex-direction: column; align-items: center; gap: 8px; color: rgba(255, 255, 255, 0.5); font-size: 12px; letter-spacing: 0.08em; }
.scroll-hint span { width: 24px; height: 40px; border: 2px solid rgba(255, 255, 255, 0.4); border-radius: 12px; position: relative; }
.scroll-hint span::after { content: ''; position: absolute; top: 6px; left: 50%; transform: translateX(-50%); width: 4px; height: 8px; background: rgba(255, 255, 255, 0.5); border-radius: 2px; animation: scrollDot 1.6s ease infinite; }
@keyframes scrollDot { 0% { opacity: 1; top: 6px; } 100% { opacity: 0; top: 20px; } }

/* ===== Services ===== */
.services { background: var(--bg); }
.services-list { display: flex; flex-direction: column; gap: 24px; }
.service-row {
  display: flex; align-items: flex-start; gap: 30px; padding: 36px 40px;
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  transition: all 0.3s ease; box-shadow: var(--shadow-sm); position: relative; overflow: hidden;
}
.service-row::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--accent); opacity: 0; transition: opacity 0.3s ease; }
.service-row:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: rgba(27, 40, 33, 0.18); }
.service-row:hover::before { opacity: 1; }
.service-num { font-size: 48px; font-weight: 800; font-variant-numeric: tabular-nums; color: rgba(27, 40, 33, 0.12); line-height: 1; min-width: 72px; transition: color 0.3s ease; }
.service-row:hover .service-num { color: var(--accent); }
.service-body h3 { font-size: 22px; font-weight: 600; margin-bottom: 8px; color: var(--primary); }
.service-body p { color: var(--text-secondary); font-size: 16px; line-height: 1.7; margin-bottom: 14px; max-width: 660px; }
.service-body a { display: inline-flex; align-items: center; color: var(--primary); font-weight: 600; font-size: 15px; gap: 6px; }
.service-body a:hover { gap: 10px; color: #000; }
.service-body a::after { content: '→'; transition: transform 0.25s ease; }

/* ===== Stats ===== */
.stats { background: var(--primary); padding: var(--space-lg) 0; position: relative; overflow: hidden; }
.stats::before { content: ''; position: absolute; top: -60px; right: -60px; width: 300px; height: 300px; border-radius: 50%; background: rgba(214, 242, 78, 0.05); }
.stats::after { content: ''; position: absolute; bottom: -100px; left: 20%; width: 260px; height: 260px; border-radius: 50%; background: rgba(214, 242, 78, 0.03); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; z-index: 1; }
.stat-item { text-align: center; padding: 12px 20px; position: relative; }
.stat-item + .stat-item::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 1px; height: 56px; background: rgba(255, 255, 255, 0.1); }
.stat-num { font-size: 54px; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; line-height: 1.15; letter-spacing: -0.01em; }
.stat-label { margin-top: 8px; font-size: 15px; color: rgba(255, 255, 255, 0.6); font-weight: 400; letter-spacing: 0.04em; }

/* ===== Latest News ===== */
.news { background: var(--bg); }
.news-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 40px; flex-wrap: wrap; gap: 20px; }
.news-head .section-head { margin-bottom: 0; }
.news-link { padding: 10px 22px; border-radius: 999px; border: 1px solid var(--border); font-size: 14px; font-weight: 500; color: var(--text-secondary); transition: all 0.25s ease; }
.news-link:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }

.news-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; align-items: stretch; }
.news-feature {
  display: flex; flex-direction: column; background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); transition: all 0.3s ease;
}
.news-feature:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: rgba(27, 40, 33, 0.18); }
.news-feature-img { height: 240px; background-size: cover; background-position: center; position: relative; }
.news-feature-img .badge { position: absolute; top: 16px; left: 16px; background: var(--accent); color: #1A211C; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15); }
.news-feature-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.news-feature-body h3 { font-size: 20px; font-weight: 700; line-height: 1.4; margin-bottom: 10px; color: var(--primary); }
.news-feature-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.65; margin-bottom: 16px; flex: 1; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.news-feature-body time { font-size: 13px; color: var(--text-secondary); display: inline-flex; align-items: center; gap: 6px; }
.news-feature-body time::before { content: '●'; font-size: 6px; color: var(--accent); }

.news-list { display: flex; flex-direction: column; gap: 12px; }
.news-item {
  display: flex; align-items: center; gap: 16px; padding: 20px 24px; background: var(--card-bg);
  border: 1px solid var(--border); border-radius: 12px; transition: all 0.3s ease; box-shadow: var(--shadow-sm);
}
.news-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); border-color: rgba(27, 40, 33, 0.18); }
.news-item-text { flex: 1; min-width: 0; }
.news-item-text h4 { font-size: 16px; font-weight: 600; color: var(--primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: color 0.2s ease; margin-bottom: 4px; }
.news-item:hover .news-item-text h4 { color: #000; }
.news-item-text time { font-size: 13px; color: var(--text-secondary); }
.news-arrow { color: var(--text-secondary); font-size: 20px; transition: all 0.25s ease; flex-shrink: 0; }
.news-item:hover .news-arrow { color: var(--primary); transform: translateX(4px); }

/* ===== Empty state ===== */
.empty-state {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 60px 40px; background: transparent; border: 2px dashed var(--border);
  border-radius: var(--radius); text-align: center; grid-column: 1 / -1;
}
.empty-icon { font-size: 48px; color: var(--accent); margin-bottom: 16px; opacity: 0.7; }
.empty-state p { font-size: 15px; color: var(--text-secondary); }

/* ===== Cases ===== */
.cases { background: var(--card-bg); }
.cases-wrap { display: flex; flex-direction: column; gap: 48px; }
.case-row { display: flex; gap: 48px; align-items: center; }
.case-row.reverse { flex-direction: row-reverse; }
.case-media { flex: 1; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-md); position: relative; }
.case-media img { width: 100%; height: 100%; object-fit: cover; min-height: 320px; transition: transform 0.5s ease; }
.case-row:hover .case-media img { transform: scale(1.03); }
.case-body { flex: 1; padding: 20px 0; }
.case-body .badge { margin-bottom: 14px; }
.case-body h3 { font-size: 28px; font-weight: 700; color: var(--primary); margin-bottom: 14px; line-height: 1.3; }
.case-body p { font-size: 16px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 20px; }
.case-body .case-result { display: inline-block; font-size: 15px; font-weight: 600; color: var(--primary); background: rgba(214, 242, 78, 0.25); padding: 6px 14px; border-radius: 999px; }

.case-banner { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 280px; display: flex; align-items: center; box-shadow: var(--shadow-md); }
.case-banner img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.case-banner-overlay { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(27, 40, 33, 0.85) 0%, rgba(27, 40, 33, 0.4) 100%); }
.case-banner-body { position: relative; z-index: 2; padding: 48px; max-width: 560px; }
.case-banner-body .badge { background: var(--accent); color: #1A211C; margin-bottom: 12px; }
.case-banner-body h3 { font-size: 26px; color: #fff; font-weight: 700; margin-bottom: 10px; }
.case-banner-body p { color: rgba(255, 255, 255, 0.8); font-size: 15px; line-height: 1.7; }

/* ===== Solutions ===== */
.solutions { background: var(--bg); }
.solutions-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.solution-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 40px; box-shadow: var(--shadow-sm); transition: all 0.3s ease; position: relative; overflow: hidden;
}
.solution-card::after { content: ''; position: absolute; top: 0; right: 0; width: 80px; height: 80px; background: var(--accent); opacity: 0.08; border-radius: 0 0 0 40px; }
.solution-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(27, 40, 33, 0.18); }
.solution-card .sol-num { font-size: 32px; font-weight: 800; color: rgba(27, 40, 33, 0.1); line-height: 1; margin-bottom: 16px; }
.solution-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; color: var(--primary); }
.solution-card .sol-scene { font-size: 14px; color: var(--text-secondary); background: rgba(27, 40, 33, 0.04); padding: 6px 12px; border-radius: 8px; display: inline-block; margin-bottom: 16px; }
.solution-card ul { list-style: none; margin-bottom: 24px; }
.solution-card li { font-size: 14px; color: var(--text-secondary); line-height: 1.7; padding-left: 20px; position: relative; }
.solution-card li::before { content: '✓'; position: absolute; left: 0; color: var(--primary); font-weight: 700; }
.solution-card .btn { margin-top: 8px; }

/* ===== FAQ ===== */
.faq { background: var(--card-bg); }
.faq-wrap { max-width: 860px; }
.faq-item { margin-bottom: 14px; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; background: var(--card-bg); transition: border-color 0.3s ease, box-shadow 0.3s ease; }
.faq-item.active { border-color: rgba(27, 40, 33, 0.2); box-shadow: var(--shadow-sm); }
.faq-question {
  display: flex; justify-content: space-between; align-items: center; width: 100%;
  padding: 20px 24px; min-height: 44px; text-align: left; font-size: 16px; font-weight: 500;
  color: var(--primary); background: transparent; gap: 20px;
}
.faq-question:hover { background: #F9FBF8; }
.faq-icon { display: flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%; background: rgba(27, 40, 33, 0.06); transition: all 0.3s ease; flex-shrink: 0; }
.faq-icon::after { content: '+'; font-size: 20px; font-weight: 400; color: var(--primary); transition: transform 0.3s ease; }
.faq-item.active .faq-icon { background: var(--accent); transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.35s ease, padding 0.3s ease; padding: 0 24px; }
.faq-item.active .faq-answer { max-height: 300px; padding: 0 24px 20px; }
.faq-answer p { font-size: 15px; color: var(--text-secondary); line-height: 1.8; }

/* ===== Contact CTA ===== */
.contact { background: var(--bg); position: relative; }
.contact-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 56px; box-shadow: var(--shadow-md); }
.contact-info h2 { font-size: 32px; font-weight: 700; color: var(--primary); line-height: 1.3; margin-bottom: 16px; }
.contact-info > p { color: var(--text-secondary); font-size: 16px; line-height: 1.75; margin-bottom: 32px; }
.contact-methods { list-style: none; display: flex; flex-direction: column; gap: 18px; }
.contact-methods li { display: flex; align-items: flex-start; gap: 14px; font-size: 15px; color: var(--text); }
.contact-methods .method-icon { display: flex; align-items: center; justify-content: center; width: 36px; height: 36px; border-radius: 10px; background: rgba(214, 242, 78, 0.2); flex-shrink: 0; color: var(--primary); font-weight: 700; }
.contact-methods .method-label { display: block; font-size: 13px; color: var(--text-secondary); }
.contact-form { background: #F9FBF8; border: 1px solid var(--border); border-radius: 16px; padding: 32px; }
.contact-form h3 { font-size: 20px; font-weight: 600; margin-bottom: 20px; color: var(--primary); }
.form-group { margin-bottom: 18px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 12px 16px; background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 12px; font-size: 15px; color: var(--text); transition: all 0.25s ease;
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-group input::placeholder, .form-group textarea::placeholder { color: #9AA6A0; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(27, 40, 33, 0.08); background: #fff; }
.form-note { font-size: 13px; color: var(--text-secondary); margin-top: 12px; text-align: center; }

/* ===== Footer ===== */
.site-footer { background: var(--primary); color: rgba(255, 255, 255, 0.7); padding: 64px 0 0; position: relative; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .brand-text { color: #fff; font-size: 24px; margin-bottom: 12px; display: inline-block; }
.footer-brand p { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, 0.55); max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin-bottom: 18px; letter-spacing: 0.04em; }
.footer-col a { display: block; color: rgba(255, 255, 255, 0.55); font-size: 14px; padding: 6px 0; transition: color 0.2s ease; }
.footer-col a:hover { color: var(--accent); }
.footer-contact { list-style: none; }
.footer-contact li { font-size: 14px; color: rgba(255, 255, 255, 0.55); margin-bottom: 10px; display: flex; align-items: center; gap: 10px; }
.footer-contact li::before { content: ''; width: 6px; height: 6px; background: var(--accent); border-radius: 50%; flex-shrink: 0; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 20px 0 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-bottom p { font-size: 13px; color: rgba(255, 255, 255, 0.4); }
.footer-bottom .legal-links { display: flex; gap: 20px; font-size: 13px; color: rgba(255, 255, 255, 0.4); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  :root { --space-xl: 80px; --space-lg: 56px; }
  .hero-content h1 { font-size: 44px; }
  .stats-num { font-size: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-wrap { padding: 40px; }
  .case-row { gap: 30px; }
}

@media (max-width: 768px) {
  :root { --space-xl: 64px; --space-lg: 48px; }
  .nav-links {
    position: fixed; top: 0; right: -100%; width: 78%; max-width: 340px; height: 100vh;
    flex-direction: column; justify-content: center; gap: 24px;
    background: rgba(27, 40, 33, 0.96); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    transition: right 0.35s ease; padding: 60px 40px; z-index: 999; border-left: 1px solid rgba(255, 255, 255, 0.1);
  }
  .nav-links.open { right: 0; }
  .nav-link { font-size: 18px; color: #fff !important; }
  .menu-toggle { display: flex; z-index: 1001; }
  .nav-actions .btn { display: none; }
  .search-dropdown { width: calc(100vw - 32px); position: fixed; left: 16px; right: 16px; }
  .hero-content h1 { font-size: 36px; }
  .news-grid { grid-template-columns: 1fr; }
  .services-list .service-row { padding: 28px 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 0; }
  .stat-item:nth-child(3)::before { display: none; }
  .case-row, .case-row.reverse { flex-direction: column; gap: 20px; }
  .case-media img { min-height: 220px; }
  .solutions-wrap { grid-template-columns: 1fr; }
  .contact-wrap { grid-template-columns: 1fr; padding: 24px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section-head h2 { font-size: 28px; }
}

@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .hero-content h1 { font-size: 30px; }
  .hero-subtitle { font-size: 16px; }
  .btn { padding: 10px 20px; font-size: 15px; }
  .case-banner-body { padding: 28px 20px; }
  .stat-num { font-size: 40px; }
  .service-row { flex-direction: column; gap: 12px; padding: 24px 18px; }
  .service-num { font-size: 40px; }
  .news-item { padding: 16px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

/* roulang page: article */
:root {
  --primary: #1B2821;
  --primary-light: #2A3A31;
  --accent: #D6F24E;
  --accent-hover: #C2DE3E;
  --accent-dark: #A8C430;
  --bg: #F4F6F2;
  --card-bg: #FFFFFF;
  --text: #1A211C;
  --text-secondary: #67746C;
  --border: rgba(27, 40, 33, 0.12);
  --success: #2E7D5B;
  --warning: #C07A2E;
  --error: #C04A3A;
  --radius-card: 16px;
  --radius-small: 8px;
  --radius-btn: 999px;
  --shadow-low: 0 2px 8px rgba(27, 40, 33, 0.06);
  --shadow-mid: 0 6px 24px rgba(27, 40, 33, 0.08);
  --shadow-high: 0 12px 40px rgba(27, 40, 33, 0.16);
  --container-max: 1200px;
  --container-padding: 24px;
  --section-gap: 96px;
  --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --transition: 200ms ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}
/* Header & Nav */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  display: flex;
  align-items: center;
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  background: rgba(27, 40, 33, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  transition: all 300ms ease;
}
.site-header.scrolled {
  background: rgba(27, 40, 33, 0.92);
  height: 64px;
  box-shadow: 0 4px 24px rgba(27, 40, 33, 0.3);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 34px;
  height: 34px;
  background: var(--accent);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
  font-weight: 800;
  box-shadow: 0 2px 8px rgba(214, 242, 78, 0.4);
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
  line-height: 1.2;
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}
.nav-link {
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  position: relative;
  transition: color var(--transition), border-color var(--transition);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}
.nav-link:hover {
  color: #fff;
}
.nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
}
.search-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.1);
  cursor: pointer;
  transition: all var(--transition);
}
.search-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.4);
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  border: none;
  cursor: pointer;
  transition: all 250ms ease;
  line-height: 1.4;
  letter-spacing: 0.01em;
}
.btn-accent {
  background: var(--accent);
  color: var(--primary);
  box-shadow: 0 2px 10px rgba(214, 242, 78, 0.3);
}
.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(214, 242, 78, 0.4);
}
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.btn-outline-light:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-outline-dark {
  background: transparent;
  color: var(--primary);
  border: 1px solid rgba(27, 40, 33, 0.28);
}
.btn-outline-dark:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(27, 40, 33, 0.04);
  transform: translateY(-2px);
}
/* Hamburger */
.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  font-size: 18px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.hamburger:hover {
  background: rgba(255, 255, 255, 0.16);
}
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  background: rgba(27, 40, 33, 0.98);
  backdrop-filter: blur(20px);
  z-index: 99;
  padding: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block;
  color: rgba(255, 255, 255, 0.85);
  font-size: 17px;
  font-weight: 500;
  padding: 14px 12px;
  border-radius: 10px;
  transition: all var(--transition);
}
.mobile-menu a:hover,
.mobile-menu a.active {
  color: var(--accent);
  background: rgba(214, 242, 78, 0.08);
}
/* Article layout */
.article-hero-band {
  height: 320px;
  background: linear-gradient(135deg, #1B2821 0%, #22332A 55%, #2C4034 100%);
  position: relative;
  display: flex;
  align-items: flex-end;
}
.article-hero-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(0deg, rgba(27, 40, 33, 0.72), rgba(27, 40, 33, 0.3)),
    url('/assets/images/backpic/back-1.webp') center 30% / cover;
  opacity: 0.55;
}
.article-hero-band::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--accent);
  opacity: 0.7;
}
.article-hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-bottom: 48px;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition);
}
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i {
  font-size: 10px;
  opacity: 0.6;
}
.article-category-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius-btn);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
/* Article main */
.article-main {
  padding: 64px 0 var(--section-gap);
}
.article-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px;
}
.article-title {
  font-size: clamp(28px, 4.4vw, 40px);
  font-weight: 800;
  line-height: 1.25;
  color: var(--primary);
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  padding: 18px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 36px;
  color: var(--text-secondary);
  font-size: 14px;
}
.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.meta-item i {
  font-size: 13px;
  color: var(--primary);
  opacity: 0.55;
}
.share-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 36px;
}
.share-label {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 500;
  margin-right: 4px;
}
.share-icon {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-secondary);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition);
}
.share-icon:hover {
  border-color: var(--accent);
  color: var(--primary);
  background: rgba(214, 242, 78, 0.15);
  transform: translateY(-2px);
}
.article-body {
  font-size: 17px;
  line-height: 1.9;
  color: var(--text);
}
.article-body > * + * {
  margin-top: 24px;
}
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--primary);
  margin-top: 40px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}
.article-body h3 {
  font-size: 21px;
  font-weight: 700;
  color: var(--primary);
  margin-top: 32px;
  line-height: 1.4;
}
.article-body p {
  margin-bottom: 0;
  line-height: 1.9;
}
.article-body blockquote {
  border-left: 4px solid var(--accent);
  background: rgba(214, 242, 78, 0.12);
  padding: 20px 24px;
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  font-style: normal;
  color: var(--primary);
  font-weight: 500;
  line-height: 1.8;
}
.article-body ul,
.article-body ol {
  padding-left: 24px;
}
.article-body ul li,
.article-body ol li {
  margin-bottom: 10px;
}
.article-body img {
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-mid);
}
.article-body figure {
  margin: 32px 0;
}
.article-body figcaption {
  font-size: 13px;
  color: var(--text-secondary);
  text-align: center;
  margin-top: 10px;
}
.article-body code {
  background: rgba(27, 40, 33, 0.08);
  padding: 3px 8px;
  border-radius: 6px;
  font-size: 0.9em;
  font-family: 'SF Mono', 'Cascadia Code', Consolas, monospace;
}
.article-body pre {
  background: var(--primary);
  color: #E8F0EA;
  padding: 20px 24px;
  border-radius: var(--radius-card);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
}
.article-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}
.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--accent);
  transition: all var(--transition);
}
.article-body a:hover {
  text-decoration-color: var(--primary);
}
.article-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(27, 40, 33, 0.06);
  color: var(--text-secondary);
  font-size: 13px;
  padding: 5px 14px;
  border-radius: var(--radius-btn);
  transition: all var(--transition);
  cursor: pointer;
}
.tag:hover {
  background: var(--accent);
  color: var(--primary);
}
/* Not found */
.not-found {
  background: var(--card-bg);
  border: 2px dashed var(--border);
  border-radius: var(--radius-card);
  padding: 80px 40px;
  text-align: center;
  max-width: 760px;
  margin: 0 auto;
}
.not-found i {
  font-size: 44px;
  color: var(--text-secondary);
  opacity: 0.4;
  margin-bottom: 18px;
  display: block;
}
.not-found h3 {
  font-size: 24px;
  color: var(--primary);
  margin-bottom: 10px;
}
.not-found p {
  color: var(--text-secondary);
  margin-bottom: 24px;
}
/* Related */
.related-section {
  padding: 72px 0;
  background: var(--primary);
  color: #fff;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 44px;
}
.section-head-left {
  max-width: 640px;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
  display: block;
}
.section-title {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.3;
  color: #fff;
}
.section-desc {
  color: rgba(255, 255, 255, 0.7);
  margin-top: 12px;
  font-size: 15px;
  max-width: 480px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: all 250ms ease;
}
.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
}
.related-card figure {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
}
.related-card figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 400ms ease;
}
.related-card:hover figure img {
  transform: scale(1.05);
}
.related-card-body {
  padding: 18px 20px 22px;
}
.related-card-body h3 {
  font-size: 17px;
  line-height: 1.45;
  font-weight: 600;
  color: #fff;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
}
.back-row {
  text-align: center;
  margin-top: 48px;
}
/* FAQ */
.faq-section {
  padding: var(--section-gap) 0;
}
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}
.faq-item:hover {
  box-shadow: var(--shadow-mid);
  border-color: rgba(27, 40, 33, 0.24);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  min-height: 56px;
  padding: 16px 24px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  transition: color var(--transition);
}
.faq-question:hover {
  color: var(--primary);
}
.faq-question .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: all 300ms ease;
  margin-left: auto;
  color: var(--primary);
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
  border-color: var(--accent);
  color: var(--primary);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  border-top: 1px solid transparent;
}
.faq-item.active .faq-answer-inner {
  border-top-color: var(--border);
  padding-top: 16px;
}
/* CTA */
.cta-section {
  padding: 80px 0;
  background: var(--primary);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, rgba(27,40,33,0.95) 30%, rgba(27,40,33,0.75)),
    url('/assets/images/backpic/back-2.png') center center / cover;
  opacity: 0.85;
}
.cta-section::after {
  content: '';
  position: absolute;
  top: 0;
  right: 12%;
  width: 160px;
  height: 6px;
  background: var(--accent);
  opacity: 0.7;
  border-radius: 0 0 8px 8px;
}
.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-content {
  max-width: 540px;
}
.cta-content .section-title {
  color: #fff;
  font-size: clamp(26px, 3.4vw, 36px);
  line-height: 1.3;
  margin-bottom: 14px;
}
.cta-content p {
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
}
.cta-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
/* Footer */
.site-footer {
  background: #141C17;
  color: rgba(255, 255, 255, 0.72);
  padding: 64px 0 28px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .brand-text {
  display: block;
  font-size: 22px;
  color: #fff;
  margin-bottom: 14px;
}
.footer-brand p {
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 12px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}
.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.55);
  padding: 5px 0;
  transition: color var(--transition), transform var(--transition);
}
.footer-col a:hover {
  color: var(--accent);
  transform: translateX(4px);
}
.footer-contact {
  list-style: none;
}
.footer-contact li {
  padding: 5px 0;
  color: rgba(255, 255, 255, 0.55);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  color: rgba(255, 255, 255, 0.4);
  font-size: 13px;
}
.legal-links {
  display: flex;
  gap: 18px;
}
/* Responsive */
@media (max-width: 1024px) {
  .nav-links { gap: 20px; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 768px) {
  :root {
    --container-padding: 20px;
    --section-gap: 72px;
  }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-actions .search-btn { display: none; }
  .article-hero-band {
    height: 260px;
  }
  .article-main {
    padding: 40px 0 var(--section-gap);
  }
  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .article-title {
    font-size: 24px;
    line-height: 1.35;
  }
  .article-meta {
    gap: 10px 16px;
  }
  .related-grid {
    grid-template-columns: 1fr;
  }
  .btn {
    padding: 10px 18px;
    font-size: 14px;
  }
}

/* roulang page: category1 */
/* ========== Design Variables ========== */
:root {
  --primary: #1B2821;
  --primary-light: #2A3A32;
  --accent: #D6F24E;
  --accent-dark: #BBD93E;
  --bg: #F4F6F2;
  --card: #FFFFFF;
  --text: #1A211C;
  --text-secondary: #67746C;
  --border: rgba(27, 40, 33, 0.12);
  --success: #2E7D5B;
  --warning: #C07A2E;
  --error: #C04A3A;
  --radius-card: 16px;
  --radius-small: 8px;
  --radius-pill: 999px;
  --shadow-low: 0 2px 12px rgba(27, 40, 33, 0.06);
  --shadow-mid: 0 8px 30px rgba(27, 40, 33, 0.10);
  --shadow-high: 0 16px 48px rgba(27, 40, 33, 0.16);
  --space-section: 96px;
  --space-section-mobile: 64px;
  --container-max: 1200px;
  --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

/* ========== Reset / Base ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease, transform 0.25s ease, box-shadow 0.25s ease;
}
ul, ol {
  list-style: none;
}
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  line-height: 1.4;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: var(--text);
}
.btn-primary:hover {
  background: var(--accent-dark);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(214, 242, 78, 0.35);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(214, 242, 78, 0.08);
}
.btn-dark {
  background: var(--primary);
  color: #fff;
}
.btn-dark:hover {
  background: var(--primary-light);
  transform: translateY(-3px);
  box-shadow: var(--shadow-mid);
}
.btn-sm {
  padding: 9px 20px;
  font-size: 14px;
}
.btn i {
  font-size: 14px;
}

/* ========== Header / Nav ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: 72px;
  display: flex;
  align-items: center;
  background: rgba(27, 40, 33, 0.18);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  transition: all 0.3s ease;
}
.site-header.scrolled {
  height: 64px;
  background: rgba(27, 40, 33, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-high);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent);
  position: relative;
  display: inline-block;
  flex-shrink: 0;
}
.brand-mark::after {
  content: '';
  position: absolute;
  inset: 7px;
  border: 2px solid var(--primary);
  border-radius: 5px;
}
.brand-text {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  display: inline-block;
  padding: 8px 16px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  font-weight: 500;
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
}
.nav-link:hover {
  color: var(--accent);
  background: rgba(255, 255, 255, 0.08);
}
.nav-link.active {
  color: var(--accent);
  background: rgba(214, 242, 78, 0.14);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.9);
  font-size: 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  transition: all 0.25s ease;
}
.icon-btn:hover {
  background: rgba(255, 255, 255, 0.22);
  color: var(--accent);
}
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 12px 8px;
  border-radius: var(--radius-small);
}
.hamburger span {
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
  opacity: 0;
}
.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========== Page Banner ========== */
.page-banner {
  min-height: 460px;
  display: flex;
  align-items: center;
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
}
.banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: -1;
}
.banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(27, 40, 33, 0.82), rgba(27, 40, 33, 0.55) 50%, rgba(27, 40, 33, 0.82));
}
.banner-content {
  color: #fff;
  max-width: 720px;
}
.banner-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 16px;
  font-weight: 600;
}
.banner-eyebrow::before {
  content: '';
  width: 32px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.page-banner h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 18px;
  letter-spacing: 2px;
}
.banner-subtitle {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
  max-width: 560px;
  margin-bottom: 36px;
}
.banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.banner-accent-line {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent) 0%, var(--accent) 30%, transparent 30%, transparent 45%, var(--accent) 45%, var(--accent) 52%, transparent 52%);
  opacity: 0.5;
}

/* ========== Section Header ========== */
.section-header {
  margin-bottom: 48px;
}
.section-header h2 {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary);
  margin-bottom: 10px;
}
.section-header p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
}
.section-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

/* ========== Featured Section ========== */
.featured-section {
  padding: var(--space-section) 0;
  background: var(--bg);
}
.featured-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.featured-card {
  background: var(--card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-low);
  transition: all 0.3s ease;
}
.featured-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-mid);
  border-color: rgba(27, 40, 33, 0.25);
}
.featured-image {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
}
.featured-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.featured-card:hover .featured-image img {
  transform: scale(1.04);
}
.featured-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: var(--accent);
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-low);
}
.featured-body {
  padding: 28px 28px 32px;
}
.badge {
  display: inline-block;
  background: rgba(27, 40, 33, 0.06);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}
.featured-body h3 {
  font-size: 22px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 12px;
  color: var(--primary);
}
.featured-body p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 18px;
}
.text-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--primary);
  font-size: 14px;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
  transition: all 0.25s ease;
}
.text-link:hover {
  color: var(--accent-dark);
  border-bottom-color: var(--accent);
}
.text-link i {
  font-size: 13px;
  transition: transform 0.25s ease;
}
.text-link:hover i {
  transform: translateX(4px);
}

/* ========== Timeline ========== */
.timeline-block {
  background: var(--card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  padding: 32px;
  box-shadow: var(--shadow-low);
}
.timeline-block h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}
.timeline-note {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.timeline {
  position: relative;
  padding-left: 28px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), rgba(214, 242, 78, 0.15));
  border-radius: 2px;
}
.timeline-item {
  position: relative;
  padding: 0 0 28px 8px;
}
.timeline-item:last-child {
  padding-bottom: 0;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -26px;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--card);
  box-shadow: 0 0 0 2px var(--accent);
}
.timeline-date {
  font-size: 13px;
  font-weight: 700;
  color: var(--accent-dark);
  letter-spacing: 1px;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}
.timeline-item h4 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
  line-height: 1.4;
}
.timeline-item p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== Stats Section ========== */
.stats-section {
  background: var(--primary);
  padding: var(--space-section) 0;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px solid rgba(214, 242, 78, 0.2);
}
.stats-section::after {
  content: '';
  position: absolute;
  bottom: -30px;
  left: 10%;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.stats-section .container {
  position: relative;
  z-index: 1;
}
.stats-section .section-header h2 {
  color: #fff;
}
.stats-section .section-header p {
  color: rgba(255, 255, 255, 0.6);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}
.stat-item {
  padding: 40px 28px;
  text-align: center;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
  transition: background 0.3s ease;
}
.stat-item:first-child {
  border-left: none;
}
.stat-item:hover {
  background: rgba(255, 255, 255, 0.04);
}
.stat-number {
  display: block;
  font-size: 52px;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
  letter-spacing: -1px;
}
.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 1px;
}

/* ========== Service Section ========== */
.service-section {
  padding: var(--space-section) 0;
  background: var(--bg);
}
.service-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}
.service-row {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 36px 8px;
  border-bottom: 1px solid var(--border);
  transition: background 0.3s ease, padding-left 0.3s ease;
}
.service-row:first-child {
  border-top: 1px solid var(--border);
}
.service-row:hover {
  background: var(--card);
  padding-left: 20px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-low);
}
.service-index {
  font-size: 42px;
  font-weight: 800;
  color: rgba(27, 40, 33, 0.18);
  line-height: 1;
  width: 80px;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  transition: color 0.3s ease;
}
.service-row:hover .service-index {
  color: var(--accent-dark);
}
.service-text {
  flex: 1;
}
.service-text h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 6px;
}
.service-text p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 640px;
}
.service-link {
  font-weight: 600;
  font-size: 14px;
  color: var(--primary);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 3px;
  white-space: nowrap;
  transition: all 0.25s ease;
}
.service-link:hover {
  color: var(--accent-dark);
  transform: translateY(-2px);
}

/* ========== Tag Section ========== */
.tag-section {
  padding: var(--space-section) 0;
  background: var(--card);
}
.tag-layout {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 48px;
  align-items: center;
}
.tag-intro h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 12px;
  line-height: 1.25;
}
.tag-intro p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: var(--bg);
  color: var(--primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.25s ease;
}
.chip:hover {
  background: var(--primary);
  color: var(--accent);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-mid);
}
.chip i {
  font-size: 13px;
  opacity: 0.6;
}

/* ========== FAQ Section ========== */
.faq-section {
  padding: var(--space-section) 0;
  background: var(--bg);
}
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--card);
  border-radius: var(--radius-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.faq-item.open {
  border-color: rgba(27, 40, 33, 0.3);
  box-shadow: var(--shadow-mid);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 28px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  min-height: 60px;
  background: none;
  transition: color 0.25s ease;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(27, 40, 33, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all 0.3s ease;
  color: var(--primary);
}
.faq-item.open .faq-icon {
  transform: rotate(45deg);
  background: var(--accent);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 28px 24px;
}
.faq-answer p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px solid var(--border);
  padding-top: 16px;
}

/* ========== CTA Section ========== */
.cta-section {
  padding: var(--space-section) 0;
  background: var(--primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -100px;
  left: -100px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 2px solid rgba(214, 242, 78, 0.15);
}
.cta-box {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}
.cta-box h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
}
.cta-box p {
  color: rgba(255, 255, 255, 0.7);
  font-size: 16px;
  line-height: 1.8;
  margin-bottom: 36px;
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 14px;
}

/* ========== Footer ========== */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.65);
  padding: 80px 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}
.footer-brand .brand-text {
  display: inline-block;
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 340px;
}
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  padding: 6px 0;
  transition: all 0.25s ease;
}
.footer-col a:hover {
  color: var(--accent);
  padding-left: 6px;
}
.footer-contact li {
  font-size: 14px;
  padding: 5px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-contact li i {
  color: var(--accent);
  width: 16px;
  font-size: 13px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 24px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
}
.footer-bottom p {
  margin: 0;
}
.legal-links {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .featured-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .tag-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-item:nth-child(3) {
    border-left: none;
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }
  .stat-item:nth-child(4) {
    border-top: 1px solid rgba(255, 255, 255, 0.14);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: 64px;
  }
  .nav-links {
    position: fixed;
    top: 0;
    right: -280px;
    flex-direction: column;
    background: rgba(27, 40, 33, 0.96);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    width: 260px;
    height: 100vh;
    padding: 80px 24px 32px;
    gap: 4px;
    transition: right 0.35s ease;
    box-shadow: -12px 0 40px rgba(0, 0, 0, 0.3);
    align-items: stretch;
  }
  .nav-links.open {
    right: 0;
  }
  .nav-link {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: var(--radius-small);
  }
  .hamburger {
    display: flex;
  }
  .header-actions .btn-sm {
    display: none;
  }
  .page-banner {
    min-height: 420px;
    padding-top: 120px;
  }
  .page-banner h1 {
    font-size: 40px;
  }
  .banner-subtitle {
    font-size: 16px;
  }
  .section-header h2 {
    font-size: 28px;
  }
  .featured-section,
  .stats-section,
  .service-section,
  .tag-section,
  .faq-section,
  .cta-section {
    padding: var(--space-section-mobile) 0;
  }
  .service-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    padding: 28px 4px;
  }
  .service-index {
    font-size: 30px;
    width: auto;
  }
  .faq-question {
    padding: 18px 20px;
  }
  .faq-item.open .faq-answer {
    padding: 0 20px 20px;
  }
  .cta-box h2 {
    font-size: 28px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
  .stat-number {
    font-size: 40px;
  }
  .stat-item {
    padding: 28px 16px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .page-banner h1 {
    font-size: 34px;
  }
  .banner-actions .btn {
    width: 100%;
  }
  .cta-actions .btn {
    width: 100%;
  }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg);
}
::-webkit-scrollbar-thumb {
  background: rgba(27, 40, 33, 0.25);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(27, 40, 33, 0.4);
}

/* roulang page: category2 */
:root {
  --primary: #1B2821;
  --accent: #D6F24E;
  --bg: #F4F6F2;
  --card: #FFFFFF;
  --text: #1A211C;
  --text-secondary: #67746C;
  --border: rgba(27, 40, 33, 0.12);
  --radius-lg: 16px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --shadow-sm: 0 2px 10px rgba(27, 40, 33, 0.05);
  --shadow-md: 0 8px 32px rgba(27, 40, 33, 0.09);
  --shadow-lg: 0 20px 52px rgba(27, 40, 33, 0.16);
  --transition: all 0.26s ease;
  --container-max: 1200px;
  --header-h: 74px;
  --space-section: 100px;
  --space-section-sm: 64px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
::selection { background: var(--accent); color: var(--primary); }
::-webkit-scrollbar { width: 9px; height: 6px; }
::-webkit-scrollbar-thumb { background: rgba(27, 40, 33, 0.3); border-radius: 8px; }
::-webkit-scrollbar-track { background: transparent; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }
section { position: relative; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-accent { background: var(--accent); color: var(--primary); }
.btn-accent:hover { background: #c4e83c; transform: translateY(-2px); box-shadow: 0 10px 26px rgba(214, 242, 78, 0.35); }
.btn-outline-light { background: transparent; border-color: rgba(255,255,255,0.55); color: #fff; }
.btn-outline-light:hover { background: rgba(255,255,255,0.14); border-color: #fff; transform: translateY(-2px); }
.btn-outline-dark { background: transparent; border-color: rgba(27,40,33,0.4); color: var(--primary); }
.btn-outline-dark:hover { border-color: var(--primary); background: rgba(27,40,33,0.04); transform: translateY(-2px); }
.btn-sm { padding: 8px 20px; font-size: 14px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 14px;
}
.eyebrow::before { content: ''; width: 28px; height: 2px; background: var(--accent); border-radius: 2px; }
.section-head { max-width: 720px; margin-bottom: 48px; }
.section-head h2 { font-size: 38px; font-weight: 800; line-height: 1.25; color: var(--primary); letter-spacing: -0.5px; }
.section-head p { font-size: 16px; color: var(--text-secondary); margin-top: 14px; }

/* ========== Header ========== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border-bottom: 1px solid rgba(255,255,255,0.18);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  transition: height 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}
.site-header.scrolled {
  height: 64px;
  background: rgba(27,40,33,0.92);
  backdrop-filter: blur(14px);
  box-shadow: 0 10px 36px rgba(0,0,0,0.18);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 32px; height: 32px;
  border-radius: 9px;
  background: var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(214,242,78,0.3);
}
.logo-text { font-size: 20px; font-weight: 800; color: #fff; letter-spacing: -0.4px; }
.nav-links { display: flex; align-items: center; gap: 34px; }
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transition: width 0.3s ease;
}
.nav-link:hover { color: #fff; }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--accent); font-weight: 600; }
.nav-link.active::after { width: 100%; }
.header-actions { display: flex; align-items: center; gap: 14px; }
.search-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.2);
  font-size: 14px;
  transition: var(--transition);
}
.search-btn:hover { background: rgba(255,255,255,0.28); }
.hamburger { display: none; width: 38px; height: 38px; flex-direction: column; justify-content: center; align-items: center; gap: 5px; }
.hamburger span { width: 20px; height: 2px; background: #fff; border-radius: 2px; transition: var(--transition); }
.hamburger.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ========== Page Banner ========== */
.page-banner {
  position: relative;
  padding: 170px 0 90px;
  background: linear-gradient(105deg, rgba(27,40,33,0.94) 0%, rgba(27,40,33,0.78) 50%, rgba(27,40,33,0.5) 100%),
    url('/assets/images/backpic/back-1.webp') center 42% / cover no-repeat;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.banner-inner { max-width: 760px; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.62); margin-bottom: 24px; }
.breadcrumb a { color: rgba(255,255,255,0.62); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb span { color: rgba(255,255,255,0.38); }
.page-banner h1 { font-size: 52px; font-weight: 800; line-height: 1.15; letter-spacing: -1px; margin-bottom: 16px; }
.page-banner p { font-size: 18px; line-height: 1.8; color: rgba(255,255,255,0.8); max-width: 580px; }
.banner-line { width: 100px; height: 3px; background: var(--accent); border-radius: 3px; margin-top: 30px; }

/* ========== Topic Cloud ========== */
.topic-cloud-section { padding: 64px 0 30px; }
.topic-cloud { display: flex; flex-wrap: wrap; gap: 12px; }
.topic-tag {
  padding: 8px 20px;
  border-radius: 999px;
  background: var(--card);
  border: 1px solid var(--border);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.topic-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.topic-tag i { margin-right: 6px; font-size: 12px; color: var(--primary); }

/* ========== Encyclopedia Items ========== */
.encyclopedia-section { padding: 50px 0 40px; }
.encyc-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  margin-bottom: 90px;
}
.encyc-item:last-child { margin-bottom: 0; }
.encyc-media { position: relative; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-md); }
.encyc-media img { width: 100%; height: 380px; object-fit: cover; border-radius: var(--radius-lg); aspect-ratio: 4/3; transition: transform 0.5s ease; }
.encyc-item:hover .encyc-media img { transform: scale(1.03); }
.encyc-media::after { content: ''; position: absolute; inset: 0; border: 1px solid rgba(255,255,255,0.25); border-radius: var(--radius-lg); pointer-events: none; }
.encyc-tag {
  position: absolute;
  left: 20px; top: 20px;
  background: var(--accent);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 999px;
  display: flex; align-items: center; gap: 6px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.16);
  z-index: 2;
}
.encyc-content { padding: 20px 0; }
.encyc-content h3 { font-size: 26px; font-weight: 700; color: var(--primary); line-height: 1.3; margin-bottom: 16px; }
.encyc-content p { font-size: 16px; line-height: 1.85; color: var(--text-secondary); margin-bottom: 20px; }
.encyc-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.encyc-tags span {
  font-size: 13px;
  color: var(--primary);
  background: rgba(214,242,78,0.18);
  border: 1px solid rgba(214,242,78,0.4);
  padding: 4px 14px;
  border-radius: 999px;
  font-weight: 500;
}
.encyc-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 2px;
  transition: var(--transition);
}
.encyc-link i { transition: transform 0.3s ease; }
.encyc-link:hover { gap: 12px; }
.encyc-link:hover i { transform: translateX(3px); }
.encyc-item.flip .encyc-media { order: 2; }
.encyc-item.flip .encyc-content { order: 1; }

/* ========== Learning Path ========== */
.path-section {
  padding: var(--space-section) 0;
  background: var(--primary);
  color: #fff;
  border-radius: 0;
}
.path-section .section-head h2 { color: #fff; }
.path-section .section-head p { color: rgba(255,255,255,0.62); }
.path-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.path-item {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  transition: var(--transition);
  position: relative;
}
.path-item:hover { background: rgba(255,255,255,0.09); transform: translateY(-4px); border-color: rgba(214,242,78,0.5); }
.path-num { font-size: 42px; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 20px; font-family: -apple-system, "SF Mono", monospace; }
.path-item h3 { font-size: 19px; font-weight: 700; margin-bottom: 10px; color: #fff; }
.path-item p { font-size: 14px; color: rgba(255,255,255,0.65); line-height: 1.75; }
.path-grid::before {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: calc(100% - 24px);
  height: 2px;
  transform: translate(-50%, -50%);
  background: repeating-linear-gradient(90deg, rgba(214,242,78,0.4) 0 6px, transparent 6px 14px);
  border-radius: 2px;
  z-index: 0;
}
.path-item { z-index: 1; }

/* ========== Safety Section ========== */
.safety-section {
  padding: var(--space-section) 0;
  background: var(--bg);
}
.safety-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 68px; align-items: center; }
.safety-visual { border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-lg); }
.safety-visual img { width: 100%; height: 430px; object-fit: cover; }
.safety-content h2 { font-size: 34px; font-weight: 800; line-height: 1.3; color: var(--primary); margin-bottom: 24px; }
.safety-content > p { color: var(--text-secondary); margin-bottom: 28px; font-size: 16px; }
.safety-list { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.safety-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.7;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.safety-list li:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.safety-list i { color: var(--accent); font-size: 14px; flex-shrink: 0; background: rgba(214,242,78,0.16); width: 24px; height: 24px; display: flex; align-items: center; justify-content: center; border-radius: 50%; margin-top: 2px; }

/* ========== FAQ ========== */
.faq-section { padding: var(--space-section) 0; background: var(--card); }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.open { border-color: var(--primary); box-shadow: var(--shadow-md); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 28px;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: transparent;
  min-height: 60px;
  transition: var(--transition);
}
.faq-question:hover { background: rgba(214,242,78,0.08); }
.faq-icon {
  width: 28px; height: 28px;
  flex-shrink: 0;
  background: rgba(27,40,33,0.06);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 15px;
  color: var(--primary);
  transition: transform 0.3s ease;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent); color: var(--primary); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
.faq-item.open .faq-answer { max-height: 280px; }
.faq-answer p { padding: 0 28px 24px; color: var(--text-secondary); font-size: 15px; line-height: 1.85; border-top: 1px solid rgba(27,40,33,0.06); padding-top: 18px; }

/* ========== CTA ========== */
.cta-section { padding: var(--space-section) 0; background: linear-gradient(135deg, rgba(27,40,33,0.95), rgba(27,40,33,0.82)), url('/assets/images/backpic/back-2.png') center / cover no-repeat; color: #fff; text-align: center; }
.cta-inner { max-width: 680px; margin: 0 auto; }
.cta-inner h2 { font-size: 38px; font-weight: 800; line-height: 1.3; color: #fff; margin-bottom: 18px; letter-spacing: -0.5px; }
.cta-inner p { font-size: 17px; color: rgba(255,255,255,0.75); margin-bottom: 34px; line-height: 1.8; }
.cta-btns { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }
.cta-line { width: 60px; height: 3px; background: var(--accent); border-radius: 3px; margin: 0 auto 28px; }

/* ========== Footer ========== */
.site-footer { background: #141A17; color: rgba(255,255,255,0.7); padding: 72px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand .brand-text { font-size: 22px; font-weight: 800; color: #fff; display: block; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.55); margin-bottom: 24px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col a { display: block; font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 10px; transition: var(--transition); }
.footer-col a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.footer-contact i { color: var(--accent); font-size: 13px; width: 18px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
  flex-wrap: wrap;
  gap: 10px;
}
.legal-links { display: flex; gap: 18px; align-items: center; }

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .nav-links { gap: 20px; }
  .encyc-item { gap: 36px; }
  .encyc-media img { height: 320px; }
  .path-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .path-grid::before { display: none; }
  .safety-grid { grid-template-columns: 1fr; gap: 40px; }
  .safety-visual img { height: 350px; }
  .footer-grid { grid-template-columns: 1fr 1fr 1fr; gap: 36px; }
}
@media (max-width: 767px) {
  :root { --space-section: 64px; --header-h: 64px; }
  .nav-links {
    display: flex;
    position: fixed;
    top: var(--header-h);
    left: 0; right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(27,40,33,0.97);
    backdrop-filter: blur(18px);
    padding: 16px 28px 28px;
    transform: translateY(-20px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-lg);
    z-index: 998;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; visibility: visible; }
  .nav-link { display: block; padding: 15px 0; font-size: 17px; color: rgba(255,255,255,0.85); border-bottom: 1px solid rgba(255,255,255,0.08); }
  .nav-link::after { display: none; }
  .hamburger { display: flex; }
  .header-actions .btn { display: none; }
  .page-banner { padding: 130px 0 60px; }
  .page-banner h1 { font-size: 34px; }
  .page-banner p { font-size: 15px; }
  .breadcrumb { font-size: 12px; }
  .encyc-item { grid-template-columns: 1fr; gap: 24px; }
  .encyc-item.flip .encyc-media { order: 1; }
  .encyc-item.flip .encyc-content { order: 2; }
  .encyc-media img { height: 260px; }
  .encyc-content h3 { font-size: 22px; }
  .path-grid { grid-template-columns: 1fr; }
  .safety-list { grid-template-columns: 1fr; }
  .safety-visual img { height: 280px; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .cta-inner h2 { font-size: 28px; }
  .cta-btns { flex-direction: column; }
  .cta-btns .btn { width: 100%; }
  .section-head h2 { font-size: 28px; }
  .container { padding: 0 18px; }
}
@media (max-width: 520px) {
  .topic-cloud { gap: 8px; }
  .topic-tag { padding: 6px 14px; font-size: 13px; }
  .page-banner h1 { font-size: 30px; }
  .encyc-media img { height: 220px; }
  .safety-visual img { height: 230px; }
  .section-head h2 { font-size: 25px; }
}

/* roulang page: category3 */
:root {
  --primary: #1B2821;
  --primary-light: #2A3A31;
  --accent: #D6F24E;
  --accent-dark: #C2DE3A;
  --bg: #F4F6F2;
  --card-bg: #FFFFFF;
  --text-main: #1A211C;
  --text-secondary: #67746C;
  --border: rgba(27,40,33,0.12);
  --success: #2E7D5B;
  --warning: #C07A2E;
  --error: #C04A3A;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(27,40,33,0.06);
  --shadow-md: 0 8px 28px rgba(27,40,33,0.08);
  --shadow-lg: 0 16px 40px rgba(27,40,33,0.14);
  --container: 1200px;
  --spacing-section: 96px;
  --spacing-mobile: 64px;
  --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { font-family:var(--font-family); background:var(--bg); color:var(--text-main); line-height:1.75; font-size:16px; -webkit-font-smoothing:antialiased; }
img { max-width:100%; display:block; }
a { color:var(--primary); text-decoration:none; transition:color .25s ease, border-color .25s ease, background .25s ease, transform .25s ease, box-shadow .25s ease; }
button { font-family:inherit; cursor:pointer; border:none; }
input, textarea { font-family:inherit; }
ul { list-style:none; }
.container { max-width:var(--container); margin:0 auto; padding:0 24px; }
.section { padding:96px 0; }
.section-tight { padding:64px 0; }
.section-head { margin-bottom:48px; }
.section-head .tagline { display:inline-block; font-size:14px; font-weight:600; color:var(--primary); background:rgba(214,242,78,.18); padding:6px 16px; border-radius:999px; margin-bottom:16px; letter-spacing:.05em; }
.section-head h2 { font-size:36px; font-weight:700; line-height:1.25; color:var(--primary); letter-spacing:-.02em; }
.section-head p { font-size:16px; color:var(--text-secondary); max-width:640px; margin-top:12px; }
.section-head.white h2 { color:#fff; }
.section-head.white p { color:rgba(255,255,255,.78); }
.section-head.white .tagline { background:rgba(255,255,255,.14); color:var(--accent); }

/* ===== Top Bar ===== */
.top-bar { background:var(--primary); padding:6px 0; font-size:13px; color:rgba(255,255,255,.8); }
.top-bar .container { display:flex; justify-content:space-between; align-items:center; }
.top-bar span { display:inline-flex; align-items:center; gap:6px; }

/* ===== Header / Nav ===== */
.site-header { position:fixed; top:0; left:0; right:0; z-index:1000; transition:background .3s ease, box-shadow .3s ease, height .3s ease, backdrop-filter .3s ease; height:76px; display:flex; align-items:center; backdrop-filter:blur(16px) saturate(160%); background:rgba(27,40,33,.72); border-bottom:1px solid rgba(255,255,255,.12); }
.site-header.scrolled { background:rgba(27,40,33,.94); box-shadow:var(--shadow-lg); height:64px; backdrop-filter:blur(12px); border-bottom-color:transparent; }
.site-header .container { width:100%; display:flex; align-items:center; justify-content:space-between; gap:32px; }
.brand { display:flex; align-items:center; gap:10px; flex-shrink:0; }
.brand-mark { width:38px; height:38px; background:var(--accent); border-radius:10px; display:flex; align-items:center; justify-content:center; font-weight:800; font-size:18px; color:var(--primary); transform:rotate(-8deg); transition:transform .3s ease; }
.brand:hover .brand-mark { transform:rotate(0deg) scale(1.05); }
.brand-text { font-size:22px; font-weight:800; color:#fff; letter-spacing:.02em; white-space:nowrap; }
.nav-links { display:flex; align-items:center; gap:6px; margin-left:auto; }
.nav-links a { color:rgba(255,255,255,.85); font-size:15px; font-weight:500; padding:10px 16px; border-radius:999px; position:relative; transition:color .25s ease, background .25s ease; }
.nav-links a:hover { color:#fff; background:rgba(255,255,255,.1); }
.nav-links a.active { color:var(--primary); background:var(--accent); font-weight:600; }
.nav-cta { display:flex; align-items:center; gap:10px; margin-left:8px; }
.btn-search { width:40px; height:40px; border-radius:50%; background:rgba(255,255,255,.12); color:#fff; display:flex; align-items:center; justify-content:center; transition:background .25s ease, transform .25s ease; }
.btn-search:hover { background:rgba(255,255,255,.22); transform:scale(1.05); }
.btn-nav-cta { display:inline-flex; align-items:center; gap:8px; background:var(--accent); color:var(--primary); font-size:14px; font-weight:700; padding:10px 24px; border-radius:999px; transition:transform .25s ease, box-shadow .25s ease, background .25s ease; }
.btn-nav-cta:hover { transform:translateY(-2px); box-shadow:0 8px 20px rgba(214,242,78,.25); background:var(--accent-dark); }
.hamburger { display:none; width:44px; height:44px; border-radius:10px; background:rgba(255,255,255,.12); color:#fff; align-items:center; justify-content:center; font-size:20px; transition:background .25s ease; }
.hamburger:hover { background:rgba(255,255,255,.22); }
.mobile-menu { display:none; position:fixed; top:76px; left:0; right:0; background:rgba(27,40,33,.98); backdrop-filter:blur(20px); padding:24px; z-index:999; flex-direction:column; gap:8px; box-shadow:var(--shadow-lg); border-bottom:1px solid rgba(255,255,255,.1); }
.mobile-menu.open { display:flex; }
.mobile-menu a { color:#fff; font-size:16px; padding:14px 18px; border-radius:12px; transition:background .25s ease; }
.mobile-menu a:hover, .mobile-menu a.active { background:rgba(214,242,78,.09); color:var(--accent); }
.mobile-menu .btn-cta { margin-top:12px; justify-content:center; }

/* ===== Buttons ===== */
.btn { display:inline-flex; align-items:center; gap:8px; font-size:15px; font-weight:700; padding:12px 28px; border-radius:999px; transition:transform .25s ease, box-shadow .25s ease, background .25s ease, opacity .25s ease; border:none; }
.btn-primary { background:var(--accent); color:var(--primary); }
.btn-primary:hover { transform:translateY(-2px); box-shadow:0 8px 24px rgba(214,242,78,.25); background:var(--accent-dark); }
.btn-outline { background:transparent; color:#fff; border:1.5px solid rgba(255,255,255,.4); }
.btn-outline:hover { border-color:var(--accent); color:var(--accent); transform:translateY(-2px); background:rgba(214,242,78,.06); }
.btn-dark { background:var(--primary); color:#fff; }
.btn-dark:hover { background:#2A3A31; transform:translateY(-2px); box-shadow:0 8px 24px rgba(27,40,33,.15); }

/* ===== Hero / Banner ===== */
.page-banner { position:relative; padding:140px 0 80px; background:linear-gradient(135deg, #1B2821 0%, #2A3A31 55%, #3d5349 100%); overflow:hidden; }
.page-banner::before { content:''; position:absolute; inset:0; background:url('/assets/images/backpic/back-2.png') center/cover no-repeat; opacity:.3; }
.page-banner::after { content:''; position:absolute; inset:0; background:linear-gradient(90deg, rgba(27,40,33,.95) 0%, rgba(27,40,33,.72) 50%, rgba(27,40,33,.4) 100%); }
.page-banner .container { position:relative; z-index:2; }
.page-banner .tagline { display:inline-block; font-size:14px; font-weight:600; color:var(--accent); background:rgba(214,242,78,.1); border:1px solid rgba(214,242,78,.3); padding:6px 16px; border-radius:999px; margin-bottom:20px; letter-spacing:.08em; }
.page-banner h1 { font-size:52px; font-weight:800; color:#fff; line-height:1.15; letter-spacing:-.02em; margin-bottom:16px; }
.page-banner .banner-desc { font-size:17px; color:rgba(255,255,255,.78); max-width:600px; line-height:1.8; margin-bottom:28px; }
.banner-dec { position:absolute; bottom:0; left:0; right:0; height:4px; background:linear-gradient(90deg, var(--accent) 0%, transparent 70%); z-index:3; }

/* ===== Breadcrumb ===== */
.breadcrumb { background:transparent; padding:20px 0 0; font-size:13px; color:var(--text-secondary); }
.breadcrumb a { color:var(--text-secondary); }
.breadcrumb a:hover { color:var(--primary); }
.breadcrumb .sep { margin:0 8px; color:var(--border); }

/* ===== Filter Bar ===== */
.filter-bar { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); padding:20px 24px; margin-bottom:40px; box-shadow:var(--shadow-sm); display:flex; flex-wrap:wrap; align-items:center; gap:12px; }
.filter-bar .filter-label { font-size:14px; font-weight:700; color:var(--primary); margin-right:4px; }
.filter-tags { display:flex; flex-wrap:wrap; gap:8px; }
.filter-tag { display:inline-block; font-size:13px; font-weight:500; color:var(--text-secondary); background:var(--bg); border:1px solid var(--border); padding:6px 16px; border-radius:999px; transition:all .25s ease; cursor:pointer; }
.filter-tag:hover { border-color:var(--primary); color:var(--primary); }
.filter-tag.active { background:var(--primary); color:#fff; border-color:var(--primary); }

/* ===== Venue Cards ===== */
.venue-card { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow-sm); transition:transform .3s ease, box-shadow .3s ease, border-color .3s ease; display:flex; flex-direction:column; }
.venue-card:hover { transform:translateY(-6px); box-shadow:var(--shadow-md); border-color:rgba(27,40,33,.25); }
.venue-card .venue-cover { position:relative; height:220px; overflow:hidden; }
.venue-card .venue-cover img { width:100%; height:100%; object-fit:cover; transition:transform .4s ease; }
.venue-card:hover .venue-cover img { transform:scale(1.05); }
.venue-card .venue-cover::after { content:''; position:absolute; inset:0; background:linear-gradient(180deg, transparent 50%, rgba(27,40,33,.35) 100%); }
.venue-badge { position:absolute; top:16px; left:16px; z-index:2; display:inline-flex; align-items:center; gap:4px; background:rgba(27,40,33,.85); backdrop-filter:blur(8px); color:#fff; font-size:12px; font-weight:600; padding:5px 14px; border-radius:999px; }
.venue-rating { position:absolute; top:16px; right:16px; z-index:2; display:inline-flex; align-items:center; gap:4px; background:rgba(255,255,255,.95); color:var(--text-main); font-size:13px; font-weight:700; padding:5px 12px; border-radius:999px; box-shadow:0 2px 8px rgba(0,0,0,.1); }
.venue-rating i { color:#f5a623; }
.venue-body { padding:24px; display:flex; flex-direction:column; flex:1; }
.venue-body h3 { font-size:18px; font-weight:700; color:var(--primary); margin-bottom:6px; }
.venue-location { display:flex; align-items:center; gap:6px; font-size:13px; color:var(--text-secondary); margin-bottom:12px; }
.venue-location i { color:var(--primary); }
.venue-desc { font-size:14px; color:var(--text-secondary); line-height:1.6; margin-bottom:16px; flex:1; }
.venue-tags { display:flex; flex-wrap:wrap; gap:6px; margin-bottom:16px; }
.venue-tag { font-size:12px; font-weight:500; color:var(--primary); background:rgba(214,242,78,.2); border-radius:6px; padding:3px 10px; }
.venue-meta { display:flex; align-items:center; justify-content:space-between; border-top:1px solid rgba(27,40,33,.08); padding-top:16px; }
.venue-meta .time { font-size:13px; color:var(--text-secondary); display:flex; align-items:center; gap:4px; }
.venue-meta .price { font-size:15px; font-weight:700; color:var(--primary); }
.venue-meta .price small { font-size:12px; font-weight:400; color:var(--text-secondary); }
.venue-link { display:inline-flex; align-items:center; gap:6px; font-size:14px; font-weight:600; color:var(--primary); margin-top:12px; }
.venue-link i { transition:transform .25s ease; }
.venue-link:hover i { transform:translateX(4px); }

/* ===== Featured Picks ===== */
.featured-block { background:var(--primary); border-radius:var(--radius-lg); overflow:hidden; position:relative; margin-bottom:48px; }
.featured-block::before { content:''; position:absolute; top:0; right:0; width:300px; height:300px; background:radial-gradient(circle, rgba(214,242,78,.12) 0%, transparent 70%); }
.featured-grid { display:grid; grid-template-columns:1fr 1fr; min-height:320px; }
.featured-image { background:url('/assets/images/coverpic/cover-6.png') center/cover no-repeat; position:relative; min-height:320px; }
.featured-image::after { content:''; position:absolute; inset:0; background:linear-gradient(90deg, transparent 60%, var(--primary) 100%); }
.featured-content { display:flex; flex-direction:column; justify-content:center; padding:48px; position:relative; z-index:2; }
.featured-content .featured-label { display:inline-block; background:var(--accent); color:var(--primary); font-size:12px; font-weight:700; padding:4px 14px; border-radius:999px; margin-bottom:16px; align-self:flex-start; }
.featured-content h3 { font-size:28px; font-weight:700; color:#fff; line-height:1.3; margin-bottom:12px; }
.featured-content p { font-size:15px; color:rgba(255,255,255,.7); line-height:1.7; margin-bottom:20px; }
.featured-stats { display:flex; gap:32px; margin-top:8px; }
.featured-stats .stat-item { display:flex; flex-direction:column; }
.featured-stats .stat-num { font-size:28px; font-weight:800; color:var(--accent); font-variant-numeric:tabular-nums; }
.featured-stats .stat-label { font-size:12px; color:rgba(255,255,255,.6); margin-top:2px; }

/* ===== Guide / Tips ===== */
.guide-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; }
.guide-item { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); padding:32px 28px; position:relative; overflow:hidden; transition:transform .3s ease, box-shadow .3s ease; }
.guide-item:hover { transform:translateY(-4px); box-shadow:var(--shadow-md); }
.guide-item::before { content:''; position:absolute; top:0; left:0; right:0; height:3px; background:var(--accent); opacity:0; transition:opacity .3s ease; }
.guide-item:hover::before { opacity:1; }
.guide-num { font-size:40px; font-weight:800; color:rgba(27,40,33,.15); line-height:1; margin-bottom:16px; font-variant-numeric:tabular-nums; }
.guide-item h3 { font-size:18px; font-weight:700; color:var(--primary); margin-bottom:8px; }
.guide-item p { font-size:14px; color:var(--text-secondary); line-height:1.7; }

/* ===== Comparison Table ===== */
.compare-wrap { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow-sm); }
.compare-table { width:100%; border-collapse:collapse; }
.compare-table th { background:var(--primary); color:#fff; font-size:14px; font-weight:600; padding:16px 20px; text-align:left; white-space:nowrap; }
.compare-table td { padding:16px 20px; font-size:14px; color:var(--text-main); border-bottom:1px solid rgba(27,40,33,.06); vertical-align:top; }
.compare-table td:first-child { font-weight:600; color:var(--primary); white-space:nowrap; }
.compare-table tr:last-child td { border-bottom:none; }
.compare-table tr:hover td { background:rgba(214,242,78,.05); }
.compare-table .check { color:var(--success); font-weight:700; }
.compare-table .dot { color:var(--warning); }

/* ===== Stats ===== */
.stats-band { background:var(--primary); position:relative; overflow:hidden; }
.stats-band::before { content:''; position:absolute; top:-60px; right:-60px; width:200px; height:200px; background:rgba(214,242,78,.05); border-radius:50%; }
.stats-band::after { content:''; position:absolute; bottom:-40px; left:10%; width:100px; height:100px; background:rgba(214,242,78,.03); border-radius:50%; }
.stats-grid { display:flex; justify-content:space-between; gap:48px; flex-wrap:wrap; }
.stat-block { flex:1; min-width:140px; padding:16px 0; position:relative; }
.stat-block + .stat-block { border-left:1px solid rgba(255,255,255,.12); padding-left:48px; }
.stat-number { display:block; font-size:48px; font-weight:800; color:var(--accent); line-height:1.2; font-variant-numeric:tabular-nums; }
.stat-label { display:block; font-size:14px; color:rgba(255,255,255,.7); margin-top:6px; letter-spacing:.04em; }

/* ===== FAQ ===== */
.faq-list { max-width:860px; margin:0 auto; }
.faq-item { background:var(--card-bg); border:1px solid var(--border); border-radius:var(--radius-md); margin-bottom:12px; overflow:hidden; transition:border-color .3s ease, box-shadow .3s ease; }
.faq-item:hover { border-color:rgba(27,40,33,.2); }
.faq-item.open { border-color:var(--primary); box-shadow:var(--shadow-sm); }
.faq-q { width:100%; display:flex; align-items:center; justify-content:space-between; gap:16px; padding:18px 24px; background:transparent; font-size:16px; font-weight:600; color:var(--text-main); text-align:left; min-height:56px; }
.faq-q .faq-icon { flex-shrink:0; width:24px; height:24px; display:flex; align-items:center; justify-content:center; font-size:16px; color:var(--primary); transition:transform .3s ease; }
.faq-item.open .faq-icon { transform:rotate(45deg); }
.faq-a { max-height:0; overflow:hidden; transition:max-height .35s ease; }
.faq-item.open .faq-a { max-height:400px; }
.faq-a-inner { padding:0 24px 20px; font-size:14px; color:var(--text-secondary); line-height:1.8; border-top:1px solid rgba(27,40,33,.06); padding-top:16px; }

/* ===== CTA ===== */
.cta-section { background:linear-gradient(135deg, #1B2821 0%, #2A3A31 60%, #1B2821 100%); position:relative; overflow:hidden; }
.cta-section::before { content:''; position:absolute; top:0; left:0; right:0; bottom:0; background:url('/assets/images/backpic/back-3.png') center/cover no-repeat; opacity:.08; }
.cta-section .container { position:relative; z-index:2; }
.cta-grid { display:grid; grid-template-columns:1.2fr .8fr; gap:48px; align-items:center; }
.cta-text h2 { font-size:36px; font-weight:800; color:#fff; line-height:1.25; margin-bottom:16px; letter-spacing:-.02em; }
.cta-text p { font-size:15px; color:rgba(255,255,255,.72); line-height:1.8; margin-bottom:28px; max-width:520px; }
.cta-buttons { display:flex; gap:16px; flex-wrap:wrap; }
.cta-card { background:rgba(255,255,255,.06); border:1px solid rgba(255,255,255,.15); border-radius:var(--radius-lg); padding:24px; backdrop-filter:blur(12px); }
.cta-card h3 { font-size:16px; font-weight:700; color:#fff; margin-bottom:8px; }
.cta-card p { font-size:13px; line-height:1.7; color:rgba(255,255,255,.65); margin-bottom:16px; }
.cta-card .icon-box { width:44px; height:44px; background:rgba(214,242,78,.14); border-radius:12px; display:flex; align-items:center; justify-content:center; color:var(--accent); font-size:18px; margin-bottom:16px; }
.contact-row { display:flex; align-items:center; gap:12px; color:#fff; font-size:15px; font-weight:600; margin-top:12px; }
.contact-row i { color:var(--accent); }

/* ===== Footer ===== */
.site-footer { background:#121813; color:rgba(255,255,255,.7); padding:72px 0 32px; }
.footer-grid { display:grid; grid-template-columns:1.4fr 1fr 1fr 1.2fr; gap:48px; margin-bottom:48px; }
.footer-brand .brand-text { font-size:26px; font-weight:800; color:#fff; }
.footer-brand p { font-size:14px; color:rgba(255,255,255,.55); line-height:1.8; margin-top:12px; max-width:360px; }
.footer-col h4 { color:#fff; font-size:15px; font-weight:600; margin-bottom:16px; }
.footer-col a { display:flex; align-items:center; gap:8px; color:rgba(255,255,255,.55); font-size:14px; margin-bottom:10px; transition:color .25s ease, transform .25s ease; }
.footer-col a::before { content:''; width:4px; height:4px; background:var(--accent); border-radius:50%; opacity:.4; transition:opacity .25s ease; }
.footer-col a:hover { color:var(--accent); transform:translateX(4px); }
.footer-col a:hover::before { opacity:1; }
.footer-contact li { font-size:14px; color:rgba(255,255,255,.55); margin-bottom:10px; display:flex; align-items:center; gap:8px; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.08); padding-top:28px; display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; }
.footer-bottom p { font-size:13px; color:rgba(255,255,255,.4); }
.legal-links { display:flex; gap:20px; }
.legal-links span { font-size:13px; color:rgba(255,255,255,.4); }

/* ===== Back to Top ===== */
.back-top { position:fixed; bottom:30px; right:30px; width:48px; height:48px; background:var(--primary); color:#fff; border-radius:50%; display:flex; align-items:center; justify-content:center; font-size:18px; box-shadow:var(--shadow-md); opacity:0; visibility:hidden; transition:all .3s ease; z-index:99; border:2px solid rgba(255,255,255,.2); }
.back-top.show { opacity:1; visibility:visible; }
.back-top:hover { background:var(--primary-light); transform:translateY(-4px); }

/* ===== Responsive ===== */
@media (max-width:1024px) {
  .footer-grid { grid-template-columns:1fr 1fr; gap:32px; }
  .featured-grid { grid-template-columns:1fr; }
  .featured-image { min-height:240px; }
  .featured-image::after { background:linear-gradient(0deg, var(--primary) 0%, transparent 40%); }
  .guide-grid { grid-template-columns:1fr 1fr; }
  .stats-grid { gap:24px; }
  .stat-block + .stat-block { border-left:none; padding-left:0; }
  .cta-grid { grid-template-columns:1fr; gap:32px; }
}
@media (max-width:768px) {
  .section { padding:64px 0; }
  .section-head h2 { font-size:30px; }
  .nav-links, .nav-cta { display:none; }
  .hamburger { display:flex; }
  .page-banner { padding:120px 0 60px; }
  .page-banner h1 { font-size:36px; }
  .venue-card .venue-cover { height:180px; }
  .guide-grid { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:24px; }
  .footer-bottom { flex-direction:column; text-align:center; }
  .legal-links { justify-content:center; }
  .compare-wrap { overflow-x:auto; }
  .compare-table { min-width:560px; }
  .stats-grid { gap:32px 16px; }
  .stat-block { min-width:calc(50% - 16px); }
}
@media (max-width:520px) {
  .container { padding:0 16px; }
  .page-banner h1 { font-size:30px; }
  .page-banner .banner-desc { font-size:15px; }
  .venue-body { padding:20px; }
  .filter-bar { padding:16px; }
  .featured-content { padding:28px 24px; }
  .featured-content h3 { font-size:22px; }
  .btn { width:100%; justify-content:center; }
  .cta-buttons { flex-direction:column; }
}