/* roulang page: index */
:root {
  --primary: #0B6B47;
  --primary-dark: #095A3B;
  --accent: #F07C2A;
  --accent-hover: #FF8C40;
  --bg: #FAF8F5;
  --bg-alt: #F2F0EC;
  --dark: #11251C;
  --text: #242A26;
  --text-secondary: #5C6B64;
  --text-disabled: #A8B4AE;
  --border: #D8E2DC;
  --success: #0B6B47;
  --warning: #F07C2A;
  --error: #C0392B;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 8px rgba(17,37,28,0.06);
  --shadow-md: 0 8px 24px rgba(17,37,28,0.12);
  --shadow-accent: 0 4px 12px rgba(240,124,42,0.3);
  --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
  --spacing-section: 80px;
  --spacing-card: 24px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  padding-bottom: 0;
  -webkit-font-smoothing: antialiased;
}
body.has-sticky-bar { padding-bottom: 0; }
img { max-width: 100%; display: block; object-fit: cover; }
a { color: var(--primary); text-decoration: none; transition: color .25s ease; }
a:hover { color: var(--primary-dark); }
a:focus-visible, button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: var(--spacing-section) 0; }
.section-tight { padding: 48px 0; }
.text-center { text-align: center; }
.section-head { margin-bottom: 40px; }
.section-eyebrow {
  display: inline-block;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(240,124,42,.12);
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 12px;
  letter-spacing: .02em;
}
.section-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 12px;
  padding-left: 18px;
  position: relative;
}
.section-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: .18em;
  width: 12px;
  height: .22em;
  background: var(--primary);
  border-radius: 3px;
}
.section-sub { font-size: 1rem; color: var(--text-secondary); max-width: 720px; line-height: 1.7; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .28s ease;
  text-align: center;
  min-height: 44px;
}
.btn-accent {
  background: var(--accent);
  color: #fff !important;
  box-shadow: var(--shadow-accent);
}
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(240,124,42,.4); }
.btn-accent:active { transform: scale(0.97); }
.btn-outline {
  background: transparent;
  color: var(--primary) !important;
  border-color: var(--primary);
}
.btn-outline:hover { background: rgba(11,107,71,.06); border-color: var(--primary-dark); color: var(--primary-dark) !important; }
.btn-outline:active { transform: scale(0.97); }
.btn-dark {
  background: var(--primary);
  color: #fff !important;
}
.btn-dark:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-dark:active { transform: scale(0.97); }
.btn-sm { height: 40px; padding: 0 20px; font-size: .875rem; }

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  transition: all .3s ease;
  padding: 0;
}
.site-header.scrolled {
  background: rgba(250,248,245,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(17,37,28,.05);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .02em;
}
.brand-text {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
}
.brand-text .brand-accent { color: var(--accent); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  display: block;
  padding: 8px 16px;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--text);
  border-radius: 8px;
  transition: color .2s, background .2s;
  position: relative;
}
.nav-links a:hover { color: var(--primary); background: rgba(11,107,71,.06); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.nav-search {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: rgba(255,255,255,.8);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all .2s;
}
.nav-search:hover { border-color: var(--primary); color: var(--primary); }
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: transparent;
  border: none;
  cursor: pointer;
  border-radius: 8px;
  padding: 8px;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all .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); }

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  max-width: 1680px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 56% 44%;
  position: relative;
  background: var(--bg);
  overflow: hidden;
}
.hero-left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 140px 40px 80px calc((100vw - 1200px) / 2 + 24px);
  position: relative;
  z-index: 2;
}
.hero-right {
  position: relative;
  min-height: 560px;
}
.hero-right .hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-right::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--bg) 0%, rgba(250,248,245,.4) 25%, rgba(17,37,28,.05) 100%);
  z-index: 1;
}
.hero-right::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 12px;
  background: var(--primary);
  clip-path: polygon(0 0, 100% 100%, 100% 100%, 0 100%);
  opacity: .8;
  z-index: 2;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  background: #fff;
  border: 1.5px solid var(--primary);
  color: var(--primary);
  font-size: .8125rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
  letter-spacing: .03em;
}
.hero h1 {
  font-size: 2.9rem;
  font-weight: 700;
  line-height: 1.18;
  color: var(--text);
  margin-bottom: 20px;
  max-width: 640px;
}
.hero-sub {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 36px;
}
.hero-cta { display: flex; gap: 18px; flex-wrap: wrap; }
.hero-badge {
  position: absolute;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 10px 18px;
  box-shadow: 0 4px 16px rgba(17,37,28,.08);
  font-size: .875rem;
  font-weight: 600;
  color: var(--text);
  z-index: 3;
  border-left: 3px solid var(--accent);
  white-space: nowrap;
}
.hero-badge-1 { top: 22%; left: 6%; }
.hero-badge-2 { bottom: 24%; right: 8%; }
.hero-badge-2 { border-left-color: var(--primary); }
.hero-slash {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 12px;
  background: var(--primary);
  clip-path: polygon(0 0, 100% 100%, 100% 100%, 0 100%);
  opacity: .7;
  z-index: 2;
}
@media (max-width: 1400px) {
  .hero-left { padding-left: 48px; }
  .hero { grid-template-columns: 55% 45%; }
}
@media (max-width: 1024px) {
  .hero { grid-template-columns: 1fr; }
  .hero-left { padding: 120px 24px 48px; }
  .hero-right { min-height: 320px; }
  .hero-badge-1 { top: 12%; left: 4%; }
  .hero-badge-2 { bottom: 16%; right: 4%; }
}

/* ===== 卖点三连 ===== */
.feature-section { background: var(--bg); }
.feature-list { max-width: 960px; margin: 0 auto; }
.feature-item {
  display: flex;
  gap: 40px;
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.feature-item:first-child { padding-top: 8px; }
.feature-item:last-child { border-bottom: none; }
.feature-num {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  min-width: 100px;
  transition: transform .3s ease, color .3s ease;
}
.feature-item:hover .feature-num { color: var(--accent); transform: translateX(6px); }
.feature-body { flex: 1; }
.feature-body h3 { font-size: 1.3rem; font-weight: 600; margin-bottom: 8px; color: var(--text); }
.feature-body p { font-size: .95rem; color: var(--text-secondary); line-height: 1.7; max-width: 560px; }

/* ===== 场景演示 ===== */
.scene-block { padding: 72px 0; }
.scene-inner {
  display: grid;
  grid-template-columns: 7fr 5fr;
  gap: 56px;
  align-items: center;
}
.scene-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.scene-media img { width: 100%; height: 100%; aspect-ratio: 16/11; }
.scene-body .tag-pill {
  display: inline-block;
  background: rgba(240,124,42,.12);
  color: var(--accent);
  font-size: .8125rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.scene-body h2 { font-size: 1.75rem; font-weight: 700; margin-bottom: 14px; line-height: 1.3; }
.scene-body p { color: var(--text-secondary); line-height: 1.75; margin-bottom: 20px; }
.scene-link {
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.scene-link:hover { gap: 10px; }
.scene-link .arrow { transition: transform .3s; }
.scene-light { background: var(--bg); }
.scene-light .scene-inner { grid-template-columns: 5fr 7fr; }
.scene-light .scene-media { order: 2; }
.scene-light .scene-body { order: 1; }
.scene-dark { background: var(--dark); }
.scene-dark .scene-body h2 { color: #fff; }
.scene-dark .scene-body p { color: rgba(255,255,255,.78); }
.scene-dark .scene-link { color: var(--accent); }
.scene-dark .scene-media img { border: 1px solid rgba(255,255,255,.1); }

/* ===== 社会认同 ===== */
.stats-bar {
  background: var(--bg-alt);
  padding: 48px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-num {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
}
.stat-num .unit { font-size: 1.5rem; }
.stat-label { font-size: .875rem; color: var(--text-secondary); margin-top: 6px; }
.testimonial-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.testimonial-card {
  background: #FFFDF8;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: box-shadow .3s, transform .3s;
}
.testimonial-card:hover { box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--primary);
  margin-bottom: 14px;
}
.testimonial-avatar img { width: 100%; height: 100%; object-fit: cover; }
.testimonial-text {
  font-size: .9375rem;
  line-height: 1.65;
  color: var(--text);
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.testimonial-author { font-size: .8125rem; color: var(--text-secondary); }

/* ===== 资讯卡片 ===== */
.news-section { background: var(--bg); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.news-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow .3s, transform .3s;
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.news-card-link { display: block; color: inherit; }
.news-card-img { overflow: hidden; aspect-ratio: 16/9; }
.news-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.news-card:hover .news-card-img img { transform: scale(1.04); }
.news-card-body { padding: 20px 24px 24px; }
.news-tag {
  display: inline-block;
  background: rgba(240,124,42,.12);
  color: var(--accent);
  font-size: .75rem;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.news-title {
  font-size: 1.125rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-summary {
  font-size: .875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: .8125rem;
  color: var(--text-secondary);
}
.news-more { color: var(--primary); font-weight: 600; }
.news-more:hover { color: var(--primary-dark); }
.empty-state {
  border: 2px dashed var(--border);
  border-radius: var(--radius-md);
  height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--text-disabled);
  font-size: .9375rem;
  grid-column: 1 / -1;
}
.empty-state svg { width: 36px; height: 36px; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-alt); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 4px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: color .25s;
}
.faq-question:hover { color: var(--primary); }
.faq-item.active .faq-question { color: var(--primary); }
.faq-icon {
  width: 22px;
  height: 22px;
  position: relative;
  flex-shrink: 0;
}
.faq-icon::before, .faq-icon::after {
  content: '';
  position: absolute;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all .3s;
}
.faq-icon::before { width: 14px; height: 2px; top: 10px; left: 4px; }
.faq-icon::after { width: 2px; height: 14px; top: 4px; left: 10px; }
.faq-item.active .faq-icon::before, .faq-item.active .faq-icon::after { background: var(--primary); }
.faq-item.active .faq-icon::after { transform: scaleY(0); }
.faq-answer {
  display: none;
  padding: 0 4px 20px;
  color: var(--text-secondary);
  font-size: .9375rem;
  line-height: 1.75;
  max-width: 720px;
}
.faq-item.active .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section {
  padding: 80px 0;
  background: var(--dark);
}
.cta-box {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  padding: 48px 40px;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius-lg);
}
.cta-box h2 { color: #fff; font-size: 1.75rem; font-weight: 700; margin-bottom: 14px; }
.cta-box p { color: rgba(255,255,255,.78); font-size: 1rem; margin-bottom: 32px; }
.cta-box .btn { display: inline-flex; }

/* ===== 页脚 ===== */
.site-footer { background: var(--dark); color: rgba(255,255,255,.8); padding: 64px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer-brand .brand-text { color: #fff; font-size: 1.4rem; }
.footer-brand p { color: rgba(255,255,255,.55); font-size: .875rem; margin-top: 14px; line-height: 1.7; }
.footer-links h4 { color: #fff; font-size: .9375rem; font-weight: 600; margin-bottom: 16px; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255,255,255,.6); font-size: .875rem; }
.footer-links a:hover { color: var(--accent); }
.footer-contact h4 { color: #fff; font-size: .9375rem; font-weight: 600; margin-bottom: 16px; }
.footer-contact-item { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,.6); font-size: .875rem; margin-bottom: 10px; }
.footer-contact-item .icon { width: 18px; height: 18px; opacity: .7; }
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  color: rgba(255,255,255,.4);
  font-size: .8125rem;
}
.footer-bottom a { color: rgba(255,255,255,.4); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== 固定转化条 ===== */
.sticky-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background: rgba(250,248,245,.9);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  padding: 12px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transform: translateY(100%);
  transition: transform .35s ease;
}
.sticky-bar.visible { transform: translateY(0); }
.sticky-bar-text { font-size: .9375rem; font-weight: 600; color: var(--text); }
.sticky-bar .btn { height: 42px; padding: 0 22px; font-size: .875rem; }
body { padding-bottom: 0; }
body.has-sticky-space { padding-bottom: 0; }
@media (min-width: 640px) {
  body.has-sticky-space { padding-bottom: 66px; }
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root { --spacing-section: 60px; }
  .section-title { font-size: 1.6rem; }
  .scene-inner, .scene-light .scene-inner { grid-template-columns: 1fr; }
  .scene-light .scene-media { order: 1; }
  .scene-light .scene-body { order: 2; }
  .scene-media img { aspect-ratio: 16/9; }
  .testimonial-list { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 28px 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; row-gap: 32px; }
  .hero h1 { font-size: 2.4rem; }
  .hero-left { padding: 120px 24px 48px; }
  .news-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .header-inner { height: 56px; }
  .nav-links {
    display: none;
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: stretch;
    padding: 12px 0 16px;
    box-shadow: 0 12px 24px rgba(17,37,28,.08);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 24px; border-radius: 0; font-size: 1rem; border-bottom: 1px solid rgba(216,226,220,.6); }
  .nav-links a:last-child { border-bottom: none; }
  .nav-links a.active::after { display: none; }
  .nav-links a.active { background: rgba(11,107,71,.06); }
  .nav-right .btn { display: none; }
  .hamburger { display: flex; }
  .hero { grid-template-columns: 1fr; min-height: auto; }
  .hero-left { padding: 110px 20px 40px; }
  .hero-right { min-height: 260px; }
  .hero h1 { font-size: 2rem; }
  .hero-sub { font-size: 1rem; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .feature-item { gap: 20px; padding: 32px 0; }
  .feature-num { font-size: 2.4rem; min-width: 56px; }
  .feature-body h3 { font-size: 1.1rem; }
  .news-grid { gap: 18px; }
  .news-card-body { padding: 18px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-section { padding: 48px 0; }
  .cta-box { padding: 32px 20px; }
  .sticky-bar { padding: 10px 16px; }
  .sticky-bar-text { font-size: .8125rem; }
  .sticky-bar .btn { height: 38px; font-size: .8125rem; padding: 0 16px; }
  .section { --spacing-section: 48px; }
}
@media (max-width: 520px) {
  .hero h1 { font-size: 1.7rem; }
  .brand-text { font-size: 1.05rem; }
  .brand-logo { width: 32px; height: 32px; font-size: .9rem; }
  .hero-badge { font-size: .75rem; padding: 8px 12px; }
  .hero-badge-1 { top: 10%; left: 4%; }
  .hero-badge-2 { bottom: 12%; right: 4%; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 18px; }
  .stat-num { font-size: 1.8rem; }
  .section-title { font-size: 1.4rem; padding-left: 14px; }
  .section-eyebrow { font-size: .75rem; }
  .feature-item { gap: 14px; }
  .feature-num { font-size: 2rem; min-width: 44px; }
  .footer-grid { gap: 28px; }
}

/* ===== 细节 ===== */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-disabled); }
::selection { background: rgba(11,107,71,.18); }

/* roulang page: article */
/* ===== 设计变量 ===== */
:root {
    --primary: #0B6B47;
    --primary-dark: #095A3B;
    --accent: #F07C2A;
    --accent-hover: #FF8C40;
    --bg: #FAF8F5;
    --bg-light: #F2F0EC;
    --dark: #11251C;
    --text: #242A26;
    --text-secondary: #5C6B64;
    --text-muted: #A8B4AE;
    --border: #D8E2DC;
    --success: #0B6B47;
    --warning: #F07C2A;
    --danger: #C0392B;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-sm: 0 2px 8px rgba(17, 37, 28, 0.06);
    --shadow-md: 0 8px 24px rgba(17, 37, 28, 0.12);
    --shadow-accent: 0 4px 12px rgba(240, 124, 42, 0.3);
    --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    --container-width: 1200px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 48px;
    --space-xl: 64px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font-family);
    font-size: 1rem;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 0.5em;
    font-family: inherit;
    line-height: 1.3;
    color: var(--text);
    font-weight: 700;
}

p { margin: 0 0 1em; }

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}
a:hover { color: var(--primary-dark); }

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

ul, ol { padding-left: 1.25rem; }

button, input {
    font-family: inherit;
    font-size: inherit;
}

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

/* ===== 导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(250, 248, 245, 0.92);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    gap: 20px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}
.brand-logo {
    width: 36px;
    height: 36px;
    background: var(--primary);
    color: #fff;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 18px;
    line-height: 1;
}
.brand-text {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
    letter-spacing: 0.02em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    flex: 1;
    justify-content: center;
}
.nav-links a {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 8px 2px;
    border-bottom: 3px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-shrink: 0;
}

.search-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 999px;
    transition: background 0.2s, color 0.2s;
}
.search-toggle:hover {
    background: rgba(11, 107, 71, 0.08);
    color: var(--primary);
}
.search-toggle .icon {
    width: 18px;
    height: 18px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    border-radius: 8px;
    align-items: center;
    justify-content: center;
    min-height: 44px;
}
.menu-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}
.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); }

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 24px;
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.25s ease;
    text-decoration: none;
    line-height: 1.2;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: #fff;
    box-shadow: var(--shadow-sm);
}
.btn-primary:active { transform: scale(0.97); }

.btn-accent {
    background: var(--accent);
    color: #fff;
    box-shadow: var(--shadow-accent);
}
.btn-accent:hover {
    background: var(--accent-hover);
    color: #fff;
    box-shadow: 0 6px 18px rgba(240, 124, 42, 0.4);
}
.btn-accent:active { transform: scale(0.97); }

.btn-sm {
    min-height: 38px;
    padding: 0 18px;
    font-size: 0.875rem;
    border-radius: 6px;
}

.btn:focus,
.search-toggle:focus,
.menu-toggle:focus,
.nav-links a:focus,
.breadcrumb a:focus,
.footer-links a:focus,
.related-card:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* ===== 面包屑 ===== */
.breadcrumb {
    padding: 24px 0 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb .sep { color: var(--text-muted); }
.breadcrumb .current {
    color: var(--text-muted);
    max-width: 280px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ===== 文章卡片 ===== */
.article-main {
    padding-bottom: 40px;
}

.article-card {
    max-width: 820px;
    margin: 0 auto;
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 48px;
    border: 1px solid var(--border);
}

.article-title {
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text);
    word-break: break-word;
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}
.meta-item .icon {
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.article-summary {
    background: var(--bg-light);
    border-left: 4px solid var(--primary);
    border-radius: 0 8px 8px 0;
    padding: 16px 20px;
    margin-bottom: 32px;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===== 正文 ===== */
.article-body {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text);
}
.article-body p {
    margin-bottom: 1.5em;
}
.article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text);
}
.article-body h2::before {
    content: '';
    width: 12px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
    flex-shrink: 0;
}
.article-body h3 {
    font-size: 1.2rem;
    font-weight: 600;
    line-height: 1.4;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}
.article-body h4 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}
.article-body a {
    color: var(--primary);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.article-body a:hover { color: var(--primary-dark); }
.article-body blockquote {
    border-left: 4px solid var(--primary);
    background: var(--bg-light);
    padding: 1rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 8px 8px 0;
    color: var(--text-secondary);
}
.article-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: 1.5rem 0;
}
.article-body ul,
.article-body ol {
    margin: 1rem 0 1.5rem;
    padding-left: 1.5rem;
}
.article-body li { margin-bottom: 0.4rem; }
.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-size: 0.9375rem;
}
.article-body th,
.article-body td {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    text-align: left;
}
.article-body th {
    background: var(--bg-light);
    font-weight: 600;
}
.article-body pre {
    background: var(--dark);
    color: #e8ece9;
    border-radius: 8px;
    padding: 16px 20px;
    overflow-x: auto;
    margin: 1.5rem 0;
    font-size: 0.875rem;
}
.article-body code {
    font-family: "SFMono-Regular", Consolas, monospace;
    font-size: 0.875rem;
    background: var(--bg-light);
    padding: 2px 6px;
    border-radius: 4px;
}
.article-body pre code {
    background: transparent;
    padding: 0;
    color: inherit;
}

/* ===== 标签 / 分页 ===== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 14px;
    background: rgba(240, 124, 42, 0.15);
    color: var(--accent);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: 999px;
    line-height: 1.4;
}

.article-pager {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    margin-top: 32px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}
.pager-link {
    display: inline-flex;
    align-items: center;
    color: var(--primary);
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 8px 0;
    transition: color 0.2s, transform 0.2s;
}
.pager-link:hover { color: var(--accent); }
.pager-link.prev:hover { transform: translateX(-3px); }
.pager-link.next:hover { transform: translateX(3px); }
.pager-link.list { color: var(--text-secondary); }
.pager-link.list:hover { color: var(--primary); }

/* ===== 未找到 ===== */
.not-found-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

/* ===== 相关推荐 ===== */
.related-section {
    padding: var(--space-xl) 0 24px;
}
.section-title {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 28px;
}
.section-title::before {
    content: '';
    width: 12px;
    height: 4px;
    background: var(--primary);
    border-radius: 2px;
    flex-shrink: 0;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.related-card {
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    text-decoration: none;
    border: 1px solid var(--border);
    transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
    display: block;
}
.related-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}
.related-card img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}
.related-card:hover img { transform: scale(1.03); }
.related-content {
    padding: 20px 24px;
}
.related-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 6px;
}
.related-content p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== CTA 区域 ===== */
.cta-section {
    padding: 48px 0 80px;
}
.cta-box {
    background: var(--dark);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    color: #fff;
}
.cta-box h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: #fff;
}
.cta-box p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 24px;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== 页脚 ===== */
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 64px 0 32px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-brand .brand {
    margin-bottom: 16px;
}
.footer-brand .brand-logo {
    background: var(--accent);
}
.footer-brand .brand-text { color: #fff; }
.footer-brand p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.6);
    max-width: 320px;
    margin-top: 12px;
    line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
    color: #fff;
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 16px;
}
.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.875rem;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}
.footer-contact-item .icon {
    width: 18px;
    height: 18px;
    color: var(--accent);
    flex-shrink: 0;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding-top: 24px;
    text-align: center;
    font-size: 0.8125rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
    .nav-links { gap: 16px; }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-card {
        padding: 32px;
    }
    .article-title { font-size: 2rem; }
}

@media (max-width: 639px) {
    .container { padding: 0 16px; }

    .site-header .header-inner { height: 56px; }

    .nav-links {
        display: none;
        position: absolute;
        top: 56px;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 16px 24px 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        z-index: 99;
        align-items: stretch;
    }
    .nav-links.open { display: flex; }
    .nav-links a {
        padding: 12px 0;
        border-bottom: 1px solid var(--border);
        font-size: 1rem;
    }
    .nav-links a.active {
        border-bottom-color: var(--primary);
    }

    .mousearea { display: none; }

    .header-actions .btn { display: none; }
    .header-actions { gap: 4px; }

    .menu-toggle {
        display: inline-flex;
        min-height: 44px;
    }

    .breadcrumb {
        padding-top: 16px;
        font-size: 0.8125rem;
    }
    .breadcrumb .current { max-width: 160px; }

    .article-card {
        padding: 24px 20px;
        border-radius: var(--radius-md);
    }
    .article-title { font-size: 1.5rem; line-height: 1.25; }
    .article-meta { gap: 10px; }
    .meta-item { font-size: 0.8125rem; }

    .related-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .related-content { padding: 16px 20px; }
    .related-content p {
        -webkit-line-clamp: 2;
    }

    .cta-section { padding: 32px 0 48px; }
    .cta-box { padding: 32px 20px; }
    .cta-box h3 { font-size: 1.25rem; }

    .site-footer { padding: 48px 0 24px; }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-brand p { max-width: 100%; }
    .footer-bottom { text-align: center; }
}

/* roulang page: category1 */
:root {
  --primary: #0B6B47;
  --primary-dark: #095A3B;
  --primary-light: #E6F2EC;
  --accent: #F07C2A;
  --accent-dark: #FF8C40;
  --accent-light: #FFF1E6;
  --bg: #FAF8F5;
  --bg-alt: #F2F0EC;
  --dark: #11251C;
  --text: #242A26;
  --text-muted: #5C6B64;
  --text-placeholder: #A8B4AE;
  --border: #D8E2DC;
  --radius-btn: 8px;
  --radius-card: 12px;
  --radius-img: 16px;
  --radius-pill: 999px;
  --shadow-card: 0 2px 8px rgba(17,37,28,0.06);
  --shadow-hover: 0 8px 24px rgba(17,37,28,0.12);
  --shadow-accent: 0 4px 12px rgba(240,124,42,0.3);
  --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
  background: var(--bg-alt);
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease;
}
a:hover { color: var(--primary-dark); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
h1, h2, h3, h4 {
  margin: 0;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
}
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 28px;
  border-radius: var(--radius-btn);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  transition: all .2s ease;
  text-align: center;
  white-space: nowrap;
}
.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-accent:hover {
  background: var(--accent-dark);
  color: #fff;
  box-shadow: 0 6px 16px rgba(240,124,42,0.4);
}
.btn-accent:active { transform: scale(0.97); }
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  color: #fff;
}
.btn-primary:active { transform: scale(0.97); }
.btn-outline {
  border: 1.5px solid var(--primary);
  color: var(--primary);
  background: transparent;
}
.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}
.btn-sm {
  min-height: 38px;
  padding: 8px 18px;
  font-size: 0.875rem;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,248,245,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s ease;
}
.site-header.scrolled {
  box-shadow: 0 4px 12px rgba(17,37,28,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 64px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  font-size: 1.125rem;
  font-weight: 700;
}
.brand-text {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  white-space: nowrap;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  position: relative;
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--text);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: background .2s, color .2s;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  background: rgba(11,107,71,0.06);
}
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 3px;
  border-radius: 2px;
  background: var(--primary);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.header-search {
  position: relative;
}
.search-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  color: var(--text);
  transition: background .2s, color .2s;
}
.search-toggle:hover {
  background: rgba(11,107,71,0.08);
  color: var(--primary);
}
.search-toggle svg {
  width: 18px;
  height: 18px;
}
.search-drop {
  position: absolute;
  top: 48px;
  right: 0;
  width: 320px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  padding: 12px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all .25s ease;
  z-index: 120;
}
.search-drop.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.search-form {
  display: flex;
  gap: 8px;
}
.search-form input {
  flex: 1;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0 12px;
  font-size: 0.875rem;
  font-family: inherit;
  background: #fff;
  color: var(--text);
}
.search-form input:focus {
  outline: 2px solid var(--primary);
  outline-offset: 1px;
  border-color: var(--primary);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border-radius: 8px;
  background: transparent;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
  transition: all .3s ease;
}
.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.breadcrumb-wrap {
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-muted);
}
.breadcrumb a {
  color: var(--text-muted);
}
.breadcrumb a:hover {
  color: var(--primary);
}
.breadcrumb .separator {
  color: var(--border);
}
.breadcrumb .current {
  color: var(--text);
  font-weight: 500;
}
.page-hero {
  padding: 64px 0;
  background: linear-gradient(135deg, rgba(11,107,71,0.04) 0%, rgba(250,248,245,0) 60%), var(--bg);
  border-bottom: 1px solid var(--border);
}
.page-hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
}
.page-hero-content {
  max-width: 560px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  background: #fff;
  margin-bottom: 20px;
}
.page-hero h1 {
  font-size: 2.8rem;
  line-height: 1.15;
  color: var(--dark);
  margin-bottom: 16px;
}
.page-hero-content > p {
  color: var(--text-muted);
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 460px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.page-hero-media {
  position: relative;
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--shadow-hover);
}
.page-hero-media img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}
.feature-section {
  padding: 72px 0;
  background: var(--bg);
}
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-bottom: 80px;
}
.feature-row:last-child {
  margin-bottom: 0;
}
.feature-media {
  border-radius: var(--radius-img);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.feature-media img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  transition: transform .5s ease;
}
.feature-media:hover img {
  transform: scale(1.03);
}
.feature-text {
  max-width: 500px;
}
.section-tag {
  display: inline-block;
  margin-bottom: 16px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: rgba(240,124,42,0.15);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 600;
}
.feature-text h2 {
  font-size: 1.875rem;
  margin-bottom: 16px;
  position: relative;
  padding-left: 20px;
}
.feature-text h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 12px;
  height: 4px;
  border-radius: 2px;
  background: var(--primary);
}
.feature-text p {
  color: var(--text-muted);
  margin-bottom: 20px;
}
.text-link {
  font-weight: 600;
  color: var(--primary);
  transition: color .2s;
}
.text-link:hover {
  color: var(--primary-dark);
}
.text-link .arrow {
  display: inline-block;
  transition: transform .2s ease;
}
.text-link:hover .arrow {
  transform: translateX(4px);
}
.feature-row.reverse .feature-media {
  order: 2;
}
.feature-row.reverse .feature-text {
  order: 1;
}
.process-section {
  padding: 72px 0;
  background: var(--bg-alt);
}
.section-head {
  margin-bottom: 48px;
}
.section-head h2 {
  font-size: 2rem;
  position: relative;
  padding-left: 20px;
}
.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 12px;
  height: 4px;
  border-radius: 2px;
  background: var(--primary);
}
.process-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.process-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: border-color .2s, box-shadow .2s;
}
.process-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-hover);
}
.process-num {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
  min-width: 68px;
}
.process-item h3 {
  font-size: 1.125rem;
  margin-bottom: 8px;
}
.process-item p {
  color: var(--text-muted);
  margin: 0;
}
.scenario-section {
  padding: 72px 0;
  background: var(--bg);
}
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.scenario-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.scenario-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary);
}
.scenario-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}
.scenario-card-body {
  padding: 24px;
}
.scenario-card h3 {
  font-size: 1.25rem;
  margin-bottom: 10px;
}
.scenario-card p {
  color: var(--text-muted);
  margin: 0;
}
.faq-section {
  padding: 72px 0;
  background: var(--bg-alt);
}
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-item:first-child {
  border-top: 1px solid var(--border);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 22px 8px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  background: transparent;
  transition: color .2s ease;
}
.faq-question:hover {
  color: var(--primary);
}
.faq-icon {
  font-size: 1.5rem;
  line-height: 1;
  color: var(--accent);
  transition: transform .3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 8px 20px;
  color: var(--text-muted);
}
.faq-answer-inner p {
  margin: 0;
}
.cta-section {
  padding: 64px 0;
  background: var(--bg);
}
.cta-box {
  background: var(--dark);
  border-radius: var(--radius-img);
  padding: 56px 40px;
  text-align: center;
  color: #fff;
}
.cta-box h3 {
  color: #fff;
  font-size: 1.625rem;
  margin-bottom: 12px;
}
.cta-box p {
  color: rgba(255,255,255,0.8);
  margin-bottom: 28px;
  font-size: 1rem;
}
.cta-box .btn {
  min-width: 160px;
}
.guide-section {
  padding: 64px 0;
  background: var(--bg);
  border-top: 1px solid var(--border);
}
.guide-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 820px;
  margin: 0 auto 40px;
}
.guide-card {
  display: block;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 28px;
  text-align: center;
  transition: border-color .3s, transform .3s, box-shadow .3s;
}
.guide-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.guide-card h3 {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--text);
}
.guide-card p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.9375rem;
}
.guide-cta {
  text-align: center;
}
.guide-cta .btn {
  min-width: 180px;
}
.site-footer {
  background: var(--dark);
  color: #fff;
  padding: 64px 0 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 36px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.site-footer .brand {
  margin-bottom: 16px;
}
.site-footer .brand-text {
  color: #fff;
}
.footer-brand p {
  color: rgba(255,255,255,0.7);
  font-size: 0.9375rem;
  max-width: 280px;
  margin: 0;
}
.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 1rem;
  margin-bottom: 16px;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: rgba(255,255,255,0.75);
  font-size: 0.9375rem;
  transition: color .2s;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.75);
  font-size: 0.9375rem;
  margin-bottom: 12px;
}
.footer-contact-item .icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--accent);
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  flex-wrap: wrap;
}
.footer-bottom p {
  color: rgba(255,255,255,0.5);
  font-size: 0.8125rem;
  margin: 0;
}
@media (max-width: 1023px) {
  .container {
    padding: 0 20px;
  }
  .header-inner {
    height: 56px;
  }
  .nav-links {
    position: absolute;
    top: 56px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 12px 16px;
    display: none;
    z-index: 99;
    box-shadow: 0 12px 20px rgba(17,37,28,0.08);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    padding: 12px 14px;
  }
  .nav-links a.active::after {
    left: 14px;
    right: auto;
    bottom: auto;
    top: 0;
    width: 3px;
    height: 100%;
  }
  .nav-toggle {
    display: flex;
  }
  .header-cta {
    display: inline-flex;
    min-height: 36px;
    padding: 6px 14px;
    font-size: 0.8125rem;
  }
  .page-hero-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .page-hero h1 {
    font-size: 2.2rem;
  }
  .feature-row {
    grid-template-columns: 1fr;
    gap: 28px;
    margin-bottom: 56px;
  }
  .feature-row.reverse .feature-media {
    order: 1;
  }
  .feature-row.reverse .feature-text {
    order: 2;
  }
  .feature-media img {
    height: 220px;
  }
  .process-list {
    grid-template-columns: 1fr;
  }
  .scenario-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .search-drop {
    position: fixed;
    top: 56px;
    left: 16px;
    right: 16px;
    width: auto;
  }
}
@media (max-width: 639px) {
  .container {
    padding: 0 16px;
  }
  .page-hero {
    padding: 40px 0;
  }
  .page-hero h1 {
    font-size: 2rem;
  }
  .page-hero-media img {
    height: 220px;
  }
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
  .hero-actions .btn {
    width: 100%;
  }
  .feature-section,
  .process-section,
  .scenario-section,
  .faq-section,
  .cta-section,
  .guide-section {
    padding: 48px 0;
  }
  .section-head h2,
  .feature-text h2 {
    font-size: 1.5rem;
  }
  .process-item {
    flex-direction: column;
    gap: 12px;
    padding: 20px;
  }
  .process-num {
    font-size: 2.5rem;
    min-width: 0;
  }
  .cta-box {
    padding: 36px 20px;
  }
  .cta-box h3 {
    font-size: 1.375rem;
  }
  .guide-cards {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: category3 */
:root {
  --primary: #0B6B47;
  --primary-dark: #095A3B;
  --primary-light: rgba(11, 107, 71, 0.08);
  --accent: #F07C2A;
  --accent-hover: #FF8C40;
  --accent-light: rgba(240, 124, 42, 0.15);
  --bg: #FAF8F5;
  --bg-alt: #F2F0EC;
  --dark: #11251C;
  --dark-soft: #1B3227;
  --text: #242A26;
  --text-secondary: #5C6B64;
  --text-placeholder: #A8B4AE;
  --border: #D8E2DC;
  --success: #0B6B47;
  --warning: #F07C2A;
  --error: #C0392B;
  --radius-btn: 8px;
  --radius-card: 12px;
  --radius-image: 16px;
  --radius-tag: 999px;
  --shadow-card: 0 2px 8px rgba(17,37,28,0.06);
  --shadow-card-hover: 0 8px 24px rgba(17,37,28,0.12);
  --shadow-accent: 0 4px 12px rgba(240,124,42,0.3);
  --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
}
* , *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 68px;
}
img { display: block; max-width: 100%; height: auto; object-fit: cover; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease; }
a:hover { color: var(--primary-dark); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
button { font-family: var(--font); cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
@media (max-width: 639px) { .container { padding-left: 16px; padding-right: 16px; } }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.9375rem;
  height: 48px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  transition: all .25s ease;
  text-decoration: none;
  line-height: 1.2;
  min-height: 44px;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; box-shadow: 0 6px 16px rgba(11,107,71,0.25); }
.btn-accent { background: var(--accent); color: #fff; box-shadow: var(--shadow-accent); }
.btn-accent:hover { background: var(--accent-hover); color: #fff; box-shadow: 0 6px 18px rgba(240,124,42,0.4); }
.btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn-sm { height: 42px; padding: 0 20px; font-size: 0.875rem; }
.btn-block { width: 100%; }
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 600;
  border-radius: var(--radius-tag);
  letter-spacing: 0.02em;
}
.badge-green { background: var(--primary-light); color: var(--primary); }
.section { padding-top: var(--space-3xl); padding-bottom: var(--space-3xl); }
@media (max-width: 639px) { .section { padding-top: 48px; padding-bottom: 48px; } }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 48px; }
.section-head h2, .section-head .h2 { font-size: 2rem; color: var(--dark); margin-top: 16px; }
.section-head p { color: var(--text-secondary); margin-top: 12px; }
@media (max-width: 639px) { .section-head h2, .section-head .h2 { font-size: 1.6rem; } }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--dark); }
h2, .h2 { font-size: 1.9rem; position: relative; padding-left: 18px; }
h2::before, .h2::before { content: ""; position: absolute; left: 0; top: 0.2em; width: 12px; height: 4px; background: var(--primary); border-radius: 2px; }
h3, .h3 { font-size: 1.3rem; font-weight: 600; }

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  height: 64px;
  transition: background .3s ease, box-shadow .3s ease, border-color .3s ease;
  border-bottom: 1px solid transparent;
}
.site-header.scrolled {
  background: rgba(250, 248, 245, 0.88);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border-bottom-color: var(--border);
  box-shadow: 0 2px 12px rgba(17, 37, 28, 0.05);
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.header-left { display: flex; align-items: center; gap: 40px; }
.brand { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; }
.brand-logo {
  width: 36px; height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  font-weight: 700;
}
.brand-text { font-size: 1.375rem; font-weight: 700; color: var(--dark); letter-spacing: 0.02em; }
.header-right { display: flex; align-items: center; gap: 16px; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--dark);
  padding: 6px 2px;
  position: relative;
  text-decoration: none;
  white-space: nowrap;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 3px;
  background: var(--primary);
  border-radius: 2px;
  transition: width .25s ease;
}
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px; align-items: center; justify-content: center; border-radius: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--dark); border-radius: 2px; transition: all .25s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu { display: none; position: fixed; top: 64px; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 16px 24px 24px; z-index: 99; }
.mobile-menu.open { display: block; }
.mobile-menu a { display: block; padding: 14px 4px; font-size: 1rem; font-weight: 500; color: var(--dark); border-bottom: 1px solid var(--border); }
.mobile-menu a:last-of-type { border-bottom: none; }
.mobile-menu a.active { color: var(--primary); font-weight: 600; }
@media (max-width: 1023px) {
  .nav-links { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-right .btn { display: none; }
}

.page-hero {
  position: relative;
  background: linear-gradient(120deg, rgba(17,37,28,0.92) 0%, rgba(17,37,28,0.72) 55%, rgba(11,107,71,0.65) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  padding: 180px 0 96px;
  color: #fff;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: 0; bottom: 0;
  width: 100%; height: 100%;
  background: radial-gradient(ellipse at 85% 20%, rgba(240,124,42,0.25), transparent 55%);
  pointer-events: none;
}
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb { font-size: 0.875rem; color: rgba(255,255,255,0.75); margin-bottom: 24px; display: flex; flex-wrap: wrap; gap: 8px; }
.breadcrumb a { color: rgba(255,255,255,0.75); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { opacity: 0.5; }
.page-hero h1 { font-size: 3rem; font-weight: 700; color: #fff; line-height: 1.15; margin-bottom: 24px; }
.page-hero .lead { font-size: 1.0625rem; line-height: 1.8; max-width: 640px; color: rgba(255,255,255,0.88); }
@media (max-width: 639px) {
  .page-hero { padding: 140px 0 64px; }
  .page-hero h1 { font-size: 2.2rem; }
  .page-hero .lead { font-size: 0.9375rem; }
}

.feature-split { background: var(--bg); }
.split-grid { display: flex; align-items: center; gap: 56px; }
.split-text { flex: 1 1 50%; }
.split-image { flex: 1 1 50%; }
.split-image img { width: 100%; aspect-ratio: 4/3; object-fit: cover; border-radius: var(--radius-image); box-shadow: var(--shadow-card); }
.split-text h2 { margin-bottom: 20px; }
.split-text p { color: var(--text-secondary); margin-bottom: 20px; font-size: 0.9375rem; }
.check-list { display: grid; gap: 14px; margin-top: 8px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; font-size: 0.9375rem; color: var(--text); }
.check-list .check-icon { flex: 0 0 auto; width: 22px; height: 22px; border-radius: 50%; background: var(--primary-light); color: var(--primary); display: inline-flex; align-items: center; justify-content: center; font-size: 0.75rem; font-weight: 700; margin-top: 3px; }
@media (max-width: 1023px) {
  .split-grid { flex-direction: column; gap: 32px; }
  .split-text, .split-image { flex: 1 1 100%; }
}

.service-process { background: var(--bg-alt); }
.timeline { max-width: 820px; margin: 0 auto; position: relative; padding-left: 40px; }
.timeline::before { content: ""; position: absolute; left: 14px; top: 8px; bottom: 8px; width: 2px; background: var(--border); }
.timeline-item { position: relative; padding-bottom: 40px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: ""; position: absolute; left: -40px; top: 6px;
  width: 14px; height: 14px; border-radius: 50%;
  border: 3px solid var(--primary);
  background: var(--bg-alt);
}
.timeline-num { font-size: 1.5rem; font-weight: 700; color: var(--primary); display: block; margin-bottom: 4px; }
.timeline-title { font-size: 1.125rem; font-weight: 600; color: var(--dark); margin-bottom: 6px; }
.timeline-desc { font-size: 0.9375rem; color: var(--text-secondary); }
@media (max-width: 639px) {
  .timeline { padding-left: 32px; }
  .timeline-item::before { left: -32px; }
}

.scenario-cards { background: var(--bg); }
.cards-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.scenario-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  position: relative;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--primary); }
.scenario-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.scenario-icon svg { width: 24px; height: 24px; }
.scenario-card h3 { font-size: 1.125rem; margin-bottom: 10px; }
.scenario-card p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.7; }
@media (max-width: 1023px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 639px) {
  .cards-grid { grid-template-columns: 1fr; }
}

.faq { background: var(--bg-alt); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%;
  padding: 20px 4px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  background: none;
  text-align: left;
  min-height: 44px;
}
.faq-question .plus { flex: 0 0 auto; width: 28px; height: 28px; border-radius: 50%; border: 1.5px solid var(--border); display: inline-flex; align-items: center; justify-content: center; font-size: 1.125rem; color: var(--text-secondary); transition: all .25s ease; margin-left: 16px; }
.faq-item.active .faq-question { color: var(--primary); }
.faq-item.active .faq-question .plus { border-color: var(--primary); color: var(--primary); transform: rotate(45deg); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-answer-inner { padding: 0 4px 20px; font-size: 0.9375rem; color: var(--text-secondary); line-height: 1.7; }

.cta-section { background: var(--bg); padding-top: 64px; padding-bottom: 64px; }
.cta-box {
  background: var(--dark);
  border-radius: 16px;
  padding: 64px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: ""; position: absolute; left: -40px; top: -80px;
  width: 220px; height: 220px;
  background: radial-gradient(circle, rgba(240,124,42,0.3), transparent 70%);
  pointer-events: none;
}
.cta-box::after {
  content: ""; position: absolute; right: -30px; bottom: -60px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(11,107,71,0.4), transparent 70%);
  pointer-events: none;
}
.cta-box h3, .cta-box p { position: relative; z-index: 2; color: #fff; }
.cta-box h3 { font-size: 2rem; margin-bottom: 12px; }
.cta-box p { font-size: 1rem; opacity: 0.85; margin-bottom: 32px; }
.cta-box .btn { position: relative; z-index: 2; }
@media (max-width: 639px) {
  .cta-box { padding: 40px 20px; }
  .cta-box h3 { font-size: 1.5rem; }
}

.recommend-section { background: var(--bg-alt); }
.recommend-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 860px; margin: 0 auto 32px; }
.recommend-card {
  display: flex; gap: 20px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  text-decoration: none;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.recommend-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--primary); }
.recommend-card img { width: 120px; height: 90px; border-radius: 10px; flex: 0 0 auto; object-fit: cover; }
.recommend-card-body h3 { font-size: 1.0625rem; margin-bottom: 6px; color: var(--dark); }
.recommend-card-body p { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6; }
.recommend-cta { text-align: center; }
@media (max-width: 639px) {
  .recommend-grid { grid-template-columns: 1fr; }
  .recommend-card { flex-direction: column; }
  .recommend-card img { width: 100%; height: 140px; }
}

.site-footer { background: var(--dark); color: #fff; padding: 64px 0 0; margin-top: 64px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1.4fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand p { color: rgba(255,255,255,0.65); font-size: 0.9375rem; margin-top: 16px; line-height: 1.7; max-width: 300px; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 1rem; font-weight: 600; margin-bottom: 20px; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: rgba(255,255,255,0.65); font-size: 0.875rem; transition: color .2s ease; }
.footer-links a:hover { color: var(--accent); }
.footer-contact-item { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,0.65); font-size: 0.875rem; margin-bottom: 14px; }
.footer-contact-item .icon { width: 18px; height: 18px; flex: 0 0 auto; color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.12); padding: 20px 0; text-align: center; color: rgba(255,255,255,0.5); font-size: 0.8125rem; }
@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 639px) {
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
}

.fixed-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 90;
  background: rgba(250, 248, 245, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 12px 24px;
  transform: translateY(100%);
  transition: transform .35s ease;
}
.fixed-bar.visible { transform: translateY(0); }
.fixed-bar span { font-size: 0.9375rem; font-weight: 600; color: var(--text); }
.fixed-bar .btn { height: 42px; padding: 0 24px; font-size: 0.875rem; }
@media (max-width: 639px) {
  body { padding-bottom: 76px; }
  .fixed-bar { padding: 10px 16px; gap: 12px; }
  .fixed-bar span { font-size: 0.8125rem; }
  .fixed-bar .btn { height: 40px; padding: 0 18px; font-size: 0.8125rem; }
}

.site-header.scrolled .nav-links a { color: var(--text); }
.site-header.scrolled .nav-links a.active { color: var(--primary); }
.site-header.scrolled .brand-text { color: var(--dark); }
.site-header.scrolled .nav-toggle span { background: var(--dark); }
.header-left .brand:hover .brand-logo { background: var(--primary-dark); }

/* roulang page: category2 */
:root {
  --primary: #0B6B47;
  --primary-dark: #095A3B;
  --primary-light: #E8F3EE;
  --accent: #F07C2A;
  --accent-hover: #FF8C40;
  --bg: #FAF8F5;
  --bg-alt: #F2F0EC;
  --dark: #11251C;
  --text: #242A26;
  --text-secondary: #5C6B64;
  --placeholder: #A8B4AE;
  --border: #D8E2DC;
  --radius-btn: 8px;
  --radius-btn-lg: 12px;
  --radius-card: 12px;
  --radius-media: 16px;
  --shadow-card: 0 2px 8px rgba(17,37,28,0.06);
  --shadow-card-hover: 0 8px 24px rgba(17,37,28,0.12);
  --shadow-accent: 0 4px 12px rgba(240,124,42,0.3);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
  --container: 1200px;
  --space-section: 80px;
}
*, *::before, *::after { box-sizing: border-box; }
body {
  margin: 0;
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: color 0.2s ease, background-color 0.2s ease; }
a:hover { color: var(--primary-dark); }
button { cursor: pointer; font-family: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; margin: 0 0 0.5em; color: var(--text); }
p { margin: 0 0 1em; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; width: 100%; }
.section { padding: var(--space-section) 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--dark); }
.section-cta { background: var(--bg-alt); }

.section-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 32px;
  padding-left: 20px;
  position: relative;
}
.section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  width: 12px;
  height: 4px;
  background: var(--primary);
  border-radius: 2px;
}
.section-title-light { color: #fff; }
.section-title-light::before { background: var(--accent); }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--primary); }
.breadcrumb a:hover { color: var(--primary-dark); text-decoration: underline; }
.breadcrumb-sep { color: var(--placeholder); }
.breadcrumb-current { color: var(--text-secondary); font-weight: 500; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 245, 0.85);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  height: 64px;
  transition: box-shadow 0.3s ease;
}
.site-header.is-scrolled { box-shadow: 0 2px 12px rgba(17, 37, 28, 0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-logo {
  width: 36px; height: 36px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.25rem; font-weight: 700;
}
.brand-text { font-size: 1.25rem; font-weight: 700; color: var(--text); white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-links a {
  padding: 8px 14px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  border-radius: 6px;
  position: relative;
  transition: color 0.2s ease, background-color 0.2s ease;
}
.nav-links a:hover { color: var(--primary); background: var(--primary-light); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 3px;
  background: var(--primary);
  border-radius: 2px;
}
.header-actions { display: flex; align-items: center; gap: 16px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-btn);
  font-size: 0.9375rem;
  font-weight: 600;
  border: 1.5px solid transparent;
  transition: all 0.2s ease;
  text-decoration: none;
}
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; box-shadow: 0 4px 12px rgba(11, 107, 71, 0.25); }
.btn-primary:active { transform: scale(0.97); }
.btn-accent { background: var(--accent); color: #fff; border-color: var(--accent); box-shadow: var(--shadow-accent); }
.btn-accent:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: #fff; box-shadow: 0 6px 18px rgba(240, 124, 42, 0.35); }
.btn-accent:active { transform: scale(0.97); }
.nav-cta { display: none; }
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 10px;
}
.nav-toggle span { width: 20px; height: 2px; background: var(--text); border-radius: 2px; display: block; transition: transform 0.2s ease, opacity 0.2s ease; }

.page-hero {
  padding: 56px 0 48px;
  position: relative;
}
.page-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 40%;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--primary));
  opacity: 0.25;
}
.page-hero h1 { font-size: 2.6rem; margin-bottom: 20px; color: var(--text); }
.page-hero-desc { font-size: 1rem; color: var(--text-secondary); max-width: 720px; line-height: 1.8; margin-bottom: 0; }

.tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(240, 124, 42, 0.15);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  margin-bottom: 14px;
}
.course-block { margin-bottom: 64px; }
.course-block:last-child { margin-bottom: 0; }
.course-block .course-media img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius-media);
  box-shadow: var(--shadow-card);
}
.course-block .course-body h3 { font-size: 1.5rem; margin-bottom: 12px; color: var(--text); }
.course-block .course-body p { color: var(--text-secondary); line-height: 1.75; margin-bottom: 20px; }
.text-link { color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.text-link span { transition: transform 0.2s ease; }
.text-link:hover span { transform: translateX(4px); }
.text-link:hover { text-decoration: underline; }

.timeline { position: relative; margin-top: 48px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}
.timeline-item { position: relative; padding-left: 72px; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-num {
  position: absolute;
  left: 0; top: 0;
  width: 48px; height: 48px;
  background: var(--primary-light);
  border: 2px solid var(--primary);
  color: var(--primary);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9375rem; font-weight: 700;
  z-index: 1;
}
.timeline-content h3 { font-size: 1.25rem; margin-bottom: 8px; color: var(--text); }
.timeline-content p { color: var(--text-secondary); max-width: 520px; line-height: 1.7; margin-bottom: 0; }

.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--primary); }
.feature-card h3 { font-size: 1.2rem; position: relative; padding-left: 16px; margin-bottom: 12px; }
.feature-card h3::before { content: ""; position: absolute; left: 0; top: 0.2em; width: 6px; height: 20px; background: var(--accent); border-radius: 2px; }
.feature-card p { color: var(--text-secondary); line-height: 1.7; margin-bottom: 0; font-size: 0.9375rem; }

.split-block { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-block-media img {
  width: 100%; height: 360px;
  object-fit: cover;
  border-radius: var(--radius-media);
  border: 2px solid rgba(255, 255, 255, 0.12);
}
.split-block-body p { color: rgba(255, 255, 255, 0.85); line-height: 1.8; margin-bottom: 28px; }
.split-block-body .section-title { margin-bottom: 20px; }

.faq-list { max-width: 800px; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 4px;
  background: none;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: color 0.2s ease;
}
.faq-question::after {
  content: "+";
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform 0.3s ease;
  margin-left: 16px;
}
.faq-item.open .faq-question { color: var(--primary); }
.faq-item.open .faq-question::after { transform: rotate(45deg); }
.faq-item.open .faq-question { background: var(--bg-alt); }
.faq-question:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-answer p { padding: 0 4px 20px; color: var(--text-secondary); line-height: 1.7; margin: 0; }

.cta-box {
  background: var(--dark);
  border-radius: var(--radius-btn-lg);
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--accent), var(--primary));
}
.cta-box h3 { color: #fff; font-size: 1.5rem; margin-bottom: 12px; }
.cta-box p { color: rgba(255, 255, 255, 0.8); margin-bottom: 28px; }
.related-links { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 32px; }
.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px;
  display: block;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); border-color: var(--primary); }
.related-tag { display: inline-block; font-size: 0.75rem; font-weight: 600; color: var(--accent); background: rgba(240, 124, 42, 0.12); padding: 4px 10px; border-radius: 999px; margin-bottom: 12px; }
.related-card h3 { font-size: 1.125rem; margin-bottom: 8px; }
.related-card p { color: var(--text-secondary); font-size: 0.9375rem; line-height: 1.6; margin-bottom: 0; }

.site-footer { background: var(--dark); padding: 64px 0 32px; color: rgba(255, 255, 255, 0.75); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 48px; }
.footer-brand .brand { margin-bottom: 16px; }
.footer-brand .brand-logo { background: #fff; color: var(--dark); }
.footer-brand .brand-text { color: #fff; }
.footer-brand p { font-size: 0.875rem; line-height: 1.7; color: rgba(255, 255, 255, 0.6); max-width: 320px; margin: 0; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 0.9375rem; margin-bottom: 20px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255, 255, 255, 0.65); font-size: 0.875rem; }
.footer-links a:hover { color: var(--accent); }
.footer-contact-item { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; font-size: 0.875rem; color: rgba(255, 255, 255, 0.65); }
.footer-contact-item .icon { width: 18px; height: 18px; flex-shrink: 0; color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding-top: 24px; text-align: center; }
.footer-bottom p { font-size: 0.8125rem; color: rgba(255, 255, 255, 0.5); margin: 0; }

@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .split-block { gap: 32px; }
  .course-block .course-media img { height: 300px; }
  .split-block-media img { height: 300px; }
}
@media (max-width: 767px) {
  :root { --space-section: 48px; }
  .container { padding: 0 16px; }
  .site-header { height: 56px; }
  .nav-links {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    box-shadow: 0 8px 24px rgba(17, 37, 28, 0.08);
    max-height: calc(100vh - 56px);
    overflow-y: auto;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 16px; font-size: 1rem; }
  .nav-links a.active::after { display: none; }
  .nav-links a.active { background: var(--primary-light); border-radius: 8px; }
  .nav-cta { display: flex; margin-top: 12px; justify-content: center; }
  .header-actions .btn-primary { display: none; }
  .nav-toggle { display: flex; }
  .brand-text { font-size: 1.125rem; }
  .page-hero { padding: 40px 0 36px; }
  .page-hero h1 { font-size: 2.1rem; }
  .course-block .course-media img { height: 240px; }
  .features-grid { grid-template-columns: 1fr; }
  .split-block { grid-template-columns: 1fr; }
  .split-block-media img { height: 240px; }
  .related-links { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-box { padding: 40px 24px; }
  .timeline::before { left: 16px; }
  .timeline-item { padding-left: 52px; }
  .timeline-num { width: 36px; height: 36px; font-size: 0.8125rem; }
  .section-title { font-size: 1.5rem; }
}
@media (max-width: 520px) {
  .page-hero h1 { font-size: 1.8rem; }
  .btn { padding: 0 20px; font-size: 0.875rem; }
  .cta-box h3 { font-size: 1.25rem; }
  .footer-contact-item { font-size: 0.8125rem; }
}

/* roulang page: category4 */
/* ===== Design Variables ===== */
    :root {
      --primary: #0B6B47;
      --primary-dark: #095A3B;
      --accent: #F07C2A;
      --accent-hover: #FF8C40;
      --bg-warm: #FAF8F5;
      --bg-light: #F2F0EC;
      --dark: #11251C;
      --text: #242A26;
      --text-secondary: #5C6B64;
      --text-placeholder: #A8B4AE;
      --border: #D8E2DC;
      --success: #0B6B47;
      --error: #C0392B;
      --radius-btn: 8px;
      --radius-card: 12px;
      --radius-img: 16px;
      --shadow-card: 0 2px 8px rgba(17, 37, 28, 0.06);
      --shadow-card-hover: 0 8px 24px rgba(17, 37, 28, 0.12);
      --shadow-cta: 0 4px 12px rgba(240, 124, 42, 0.3);
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
      --space-1: 8px;
      --space-2: 16px;
      --space-3: 24px;
      --space-4: 32px;
      --space-5: 48px;
      --space-6: 64px;
      --space-7: 96px;
      --container-max: 1200px;
    }

    /* ===== Base Reset ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-family);
      background: var(--bg-warm);
      color: var(--text);
      line-height: 1.75;
      font-size: 1rem;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }
    img { max-width: 100%; height: auto; display: block; object-fit: cover; }
    a { color: var(--primary); text-decoration: none; transition: color 0.2s ease; }
    a:hover { color: var(--primary-dark); }
    button { font-family: inherit; cursor: pointer; border: none; background: none; }
    input, textarea, select { font-family: inherit; }
    ul, ol { list-style: none; }

    /* ===== Layout Container ===== */
    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* ===== Focus visible ===== */
    a:focus-visible, button:focus-visible, input:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
      border-radius: 4px;
    }

    /* ===== Header / Nav ===== */
    .site-header {
      position: relative;
      z-index: 100;
      background: transparent;
      transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
      border-bottom: 1px solid transparent;
    }
    .site-header.scrolled {
      background: rgba(250, 248, 245, 0.88);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 2px 12px rgba(17, 37, 28, 0.04);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 64px;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
      gap: 24px;
    }
    .brand {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }
    .brand-logo {
      width: 38px;
      height: 38px;
      background: var(--primary);
      color: #fff;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: 700;
      letter-spacing: 1px;
    }
    .brand-text {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--dark);
      letter-spacing: 0.5px;
      white-space: nowrap;
    }
    .header-right {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-left: auto;
    }
    .nav-toggle {
      display: none;
      width: 44px;
      height: 44px;
      border-radius: 8px;
      align-items: center;
      justify-content: center;
      color: var(--dark);
    }
    .nav-toggle .bar {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--dark);
      border-radius: 2px;
      margin: 4px 0;
      transition: transform 0.3s ease, opacity 0.3s ease;
    }
    .nav-toggle.open .bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
    .nav-toggle.open .bar:nth-child(2) { opacity: 0; }
    .nav-toggle.open .bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }
    .nav-links a {
      font-size: 0.9375rem;
      font-weight: 500;
      color: var(--dark);
      padding: 6px 0;
      position: relative;
      white-space: nowrap;
      transition: color 0.2s ease;
    }
    .nav-links a:hover { color: var(--primary); }
    .nav-links a.active {
      color: var(--primary);
      font-weight: 600;
    }
    .nav-links a.active::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: -2px;
      height: 3px;
      background: var(--primary);
      border-radius: 3px 3px 0 0;
    }
    .header-cta {
      display: inline-flex;
      align-items: center;
      height: 40px;
      padding: 0 20px;
      background: var(--accent);
      color: #fff;
      border-radius: var(--radius-btn);
      font-size: 0.9375rem;
      font-weight: 600;
      white-space: nowrap;
      box-shadow: var(--shadow-cta);
      transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    }
    .header-cta:hover {
      background: var(--accent-hover);
      color: #fff;
      transform: translateY(-1px);
      box-shadow: 0 6px 16px rgba(240, 124, 42, 0.35);
    }
    .header-cta:active { transform: scale(0.97); }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .search-icon-btn {
      width: 40px;
      height: 40px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--dark);
      transition: background 0.2s ease, color 0.2s ease;
    }
    .search-icon-btn:hover { background: rgba(11, 107, 71, 0.08); color: var(--primary); }

    /* ===== Page Hero (Breadcrumb + H1 + Intro) ===== */
    .page-hero {
      position: relative;
      padding-top: 40px;
      padding-bottom: 72px;
      background: linear-gradient(135deg, rgba(11, 107, 71, 0.06) 0%, rgba(250, 248, 245, 0) 60%);
    }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      color: var(--text-secondary);
      margin-bottom: 28px;
      flex-wrap: wrap;
    }
    .breadcrumb a { color: var(--text-secondary); }
    .breadcrumb a:hover { color: var(--primary); }
    .breadcrumb .sep { color: var(--text-placeholder); }
    .breadcrumb .current { color: var(--primary); font-weight: 500; }
    .page-hero-title {
      font-size: 3rem;
      font-weight: 700;
      line-height: 1.15;
      color: var(--dark);
      margin-bottom: 20px;
      max-width: 720px;
    }
    .page-hero-title .brand-mark {
      color: var(--primary);
    }
    .page-hero-desc {
      font-size: 1.0625rem;
      line-height: 1.8;
      color: var(--text-secondary);
      max-width: 680px;
      margin-bottom: 32px;
    }
    .hero-cta-row {
      display: flex;
      gap: 20px;
      align-items: center;
      flex-wrap: wrap;
    }

    /* ===== Buttons ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 48px;
      padding: 0 28px;
      border-radius: var(--radius-btn);
      font-size: 1rem;
      font-weight: 600;
      transition: all 0.25s ease;
      white-space: nowrap;
    }
    .btn-accent {
      background: var(--accent);
      color: #fff;
      box-shadow: var(--shadow-cta);
    }
    .btn-accent:hover {
      background: var(--accent-hover);
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(240, 124, 42, 0.35);
    }
    .btn-accent:active { transform: scale(0.97); }
    .btn-outline {
      background: transparent;
      color: var(--primary);
      border: 1.5px solid var(--primary);
    }
    .btn-outline:hover {
      background: rgba(11, 107, 71, 0.06);
      color: var(--primary-dark);
      transform: translateY(-2px);
    }
    .btn-outline:active { transform: scale(0.97); }
    .btn-dark {
      background: var(--dark);
      color: #fff;
    }
    .btn-dark:hover { background: #1a3529; color: #fff; transform: translateY(-2px); }

    /* ===== Section Common ===== */
    .section {
      padding: var(--space-6) 0;
    }
    .section-title {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.9rem;
      font-weight: 700;
      line-height: 1.3;
      color: var(--dark);
      margin-bottom: 12px;
    }
    .section-title::before {
      content: "";
      width: 12px;
      height: 4px;
      background: var(--primary);
      border-radius: 2px;
      flex-shrink: 0;
    }
    .section-subtitle {
      font-size: 1rem;
      color: var(--text-secondary);
      max-width: 620px;
      line-height: 1.7;
    }
    .section-head { margin-bottom: var(--space-4); }

    /* ===== Category Showcase (装备分类展示) ===== */
    .showcase-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .showcase-card {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
    }
    .showcase-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
      border-color: var(--primary);
    }
    .showcase-card-img {
      width: 100%;
      height: 180px;
      overflow: hidden;
    }
    .showcase-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }
    .showcase-card:hover .showcase-card-img img { transform: scale(1.04); }
    .showcase-card-body { padding: 24px; }
    .showcase-card-body h3 {
      font-size: 1.2rem;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 10px;
    }
    .showcase-card-body p {
      font-size: 0.9375rem;
      line-height: 1.7;
      color: var(--text-secondary);
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 16px;
    }
    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 0.9375rem;
      font-weight: 600;
      color: var(--primary);
      transition: gap 0.2s ease;
    }
    .text-link .arrow { transition: transform 0.2s ease; }
    .text-link:hover { color: var(--primary-dark); }
    .card-tag {
      display: inline-block;
      padding: 4px 12px;
      background: rgba(240, 124, 42, 0.15);
      color: var(--accent);
      font-size: 0.8125rem;
      font-weight: 600;
      border-radius: 999px;
      margin-bottom: 14px;
    }

    /* ===== Timeline (装备管理流程) ===== */
    .timeline-section {
      background: var(--dark);
      padding: var(--space-6) 0;
    }
    .timeline-section .section-title {
      color: #fff;
    }
    .timeline-section .section-subtitle { color: rgba(255,255,255,0.75); }
    .timeline {
      position: relative;
      max-width: 780px;
      margin: 0 auto;
      padding: 40px 0 0 0;
    }
    .timeline::before {
      content: "";
      position: absolute;
      left: 24px;
      top: 20px;
      bottom: 20px;
      width: 2px;
      background: rgba(255,255,255,0.15);
      border-radius: 2px;
    }
    .timeline-item {
      position: relative;
      padding-left: 72px;
      margin-bottom: 48px;
    }
    .timeline-item:last-child { margin-bottom: 0; }
    .timeline-dot {
      position: absolute;
      left: 12px;
      top: 4px;
      width: 26px;
      height: 26px;
      background: var(--accent);
      border: 4px solid #fff;
      border-radius: 50%;
      box-shadow: 0 0 0 4px rgba(255,255,255,0.1);
      z-index: 1;
    }
    .timeline-dot .dot-num {
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      font-size: 0.625rem;
      font-weight: 700;
      color: #fff;
    }
    .timeline-item h3 {
      font-size: 1.25rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 8px;
    }
    .timeline-item p {
      color: rgba(255,255,255,0.75);
      line-height: 1.7;
      font-size: 0.9375rem;
      max-width: 520px;
    }

    /* ===== Model Cards (采购模式) ===== */
    .model-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .model-card {
      background: var(--bg-light);
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 32px 24px;
      transition: background 0.3s ease, box-shadow 0.3s ease, transform 0.3s ease;
    }
    .model-card:hover {
      background: #fff;
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    .model-num {
      font-size: 2.5rem;
      font-weight: 700;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 16px;
    }
    .model-card h3 {
      font-size: 1.125rem;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 10px;
    }
    .model-card p {
      font-size: 0.9375rem;
      line-height: 1.7;
      color: var(--text-secondary);
    }

    /* ===== FAQ Accordion ===== */
    .faq-section { background: var(--bg-warm); }
    .faq-wrap {
      max-width: 780px;
      margin: 0 auto;
    }
    .faq-item {
      border-bottom: 1px solid var(--border);
    }
    .faq-item:first-child { border-top: 1px solid var(--border); }
    .faq-q {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      width: 100%;
      padding: 20px 0;
      text-align: left;
      font-size: 1rem;
      font-weight: 600;
      color: var(--dark);
      transition: color 0.2s ease;
      min-height: 44px;
    }
    .faq-q:hover { color: var(--primary); }
    .faq-q .faq-icon {
      position: relative;
      width: 24px;
      height: 24px;
      flex-shrink: 0;
    }
    .faq-q .faq-icon::before,
    .faq-q .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--primary);
      transition: transform 0.3s ease, opacity 0.3s ease;
    }
    .faq-q .faq-icon::before { width: 12px; height: 2px; top: 11px; left: 6px; }
    .faq-q .faq-icon::after { width: 2px; height: 12px; top: 6px; left: 11px; }
    .faq-item.open .faq-q { color: var(--primary); }
    .faq-item.open .faq-q .faq-icon::after { transform: scaleY(0); opacity: 0; }
    .faq-a {
      display: none;
      padding: 0 40px 20px 0;
      color: var(--text-secondary);
      line-height: 1.75;
      font-size: 0.9375rem;
    }
    .faq-item.open .faq-a { display: block; }

    /* ===== Recommendation + CTA ===== */
    .rec-section {
      padding: var(--space-6) 0;
      background: var(--bg-light);
    }
    .rec-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
      margin-bottom: 48px;
    }
    .rec-card {
      display: flex;
      align-items: center;
      gap: 20px;
      background: #fff;
      border: 1px solid var(--border);
      border-radius: var(--radius-card);
      padding: 20px;
      transition: box-shadow 0.3s ease, transform 0.3s ease, border-color 0.3s ease;
    }
    .rec-card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-3px);
      border-color: var(--primary);
    }
    .rec-card-img {
      width: 108px;
      height: 84px;
      border-radius: 8px;
      overflow: hidden;
      flex-shrink: 0;
    }
    .rec-card-img img { width: 100%; height: 100%; object-fit: cover; }
    .rec-card-body h3 {
      font-size: 1.0625rem;
      font-weight: 600;
      color: var(--dark);
      margin-bottom: 6px;
      line-height: 1.4;
    }
    .rec-card-body p {
      font-size: 0.875rem;
      color: var(--text-secondary);
      line-height: 1.6;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .cta-block {
      background: var(--dark);
      border-radius: 12px;
      padding: 64px 40px;
      text-align: center;
    }
    .cta-block h3 {
      color: #fff;
      font-size: 1.75rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .cta-block p {
      color: rgba(255,255,255,0.8);
      font-size: 1rem;
      margin-bottom: 28px;
    }
    .cta-block .btn-accent { height: 50px; padding: 0 36px; font-size: 1.0625rem; }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--dark);
      color: rgba(255,255,255,0.85);
      padding: 64px 0 0 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 48px;
      padding-bottom: 48px;
    }
    .footer-brand .brand {
      margin-bottom: 16px;
    }
    .footer-brand .brand-text { color: #fff; }
    .footer-brand p {
      font-size: 0.9375rem;
      line-height: 1.7;
      color: rgba(255,255,255,0.7);
      max-width: 300px;
    }
    .footer-links h4 {
      font-size: 1rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-links ul li { margin-bottom: 10px; }
    .footer-links ul a {
      color: rgba(255,255,255,0.7);
      font-size: 0.9375rem;
      transition: color 0.2s ease;
    }
    .footer-links ul a:hover { color: var(--accent); }
    .footer-contact h4 {
      font-size: 1rem;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-contact-item {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-bottom: 12px;
      font-size: 0.9375rem;
      color: rgba(255,255,255,0.7);
    }
    .footer-contact-item .icon {
      width: 18px;
      height: 18px;
      flex-shrink: 0;
      color: var(--accent);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.12);
      padding: 20px 0;
      text-align: center;
      font-size: 0.8125rem;
      color: rgba(255,255,255,0.5);
    }
    .footer-bottom .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }
    .footer-bottom a { color: rgba(255,255,255,0.5); }
    .footer-bottom a:hover { color: var(--accent); }

    /* ===== Responsive ===== */
    @media (max-width: 1023px) {
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
      .rec-grid { grid-template-columns: 1fr; }
      .model-grid { grid-template-columns: repeat(2, 1fr); }
      .showcase-grid { grid-template-columns: repeat(2, 1fr); }
      .page-hero-title { font-size: 2.6rem; }
    }
    @media (max-width: 767px) {
      .section { padding: var(--space-5) 0; }
      .nav-toggle { display: flex; }
      .nav-links {
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--bg-warm);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0 24px;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 8px 24px rgba(17, 37, 28, 0.08);
        display: none;
        max-height: calc(100vh - 64px);
        overflow-y: auto;
      }
      .nav-links.open { display: flex; }
      .nav-links a {
        padding: 16px 0;
        border-bottom: 1px solid var(--border);
        font-size: 1rem;
      }
      .nav-links a.active::after { display: none; }
      .nav-links a.active {
        padding-left: 12px;
        border-left: 3px solid var(--primary);
      }
      .header-cta { display: none; }
      .header-actions { gap: 8px; }
      .page-hero { padding-top: 32px; padding-bottom: 48px; }
      .page-hero-title { font-size: 2.2rem; }
      .hero-cta-row { flex-direction: column; align-items: stretch; }
      .btn { width: 100%; }
      .showcase-grid { grid-template-columns: 1fr; }
      .model-grid { grid-template-columns: 1fr; }
      .rec-card { flex-direction: column; align-items: flex-start; }
      .rec-card-img { width: 100%; height: 140px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .cta-block { padding: 40px 20px; }
      .cta-block h3 { font-size: 1.375rem; }
      .timeline::before { left: 16px; }
      .timeline-item { padding-left: 56px; }
      .timeline-dot { left: 6px; }
      .footer-bottom .container { justify-content: center; text-align: center; }
    }
    @media (max-width: 520px) {
      .container { padding-left: 16px; padding-right: 16px; }
      .header-inner { padding: 0 16px; height: 56px; }
      .nav-links { top: 56px; max-height: calc(100vh - 56px); }
      .brand-text { font-size: 1.125rem; }
      .page-hero-title { font-size: 1.9rem; }
      .section-title { font-size: 1.5rem; }
    }