/* roulang page: index */
:root {
  --color-primary: #176B52;
  --color-primary-dark: #115640;
  --color-primary-light: #DFEDE8;
  --color-accent: #E8552D;
  --color-accent-dark: #C94623;
  --color-dark: #14231D;
  --color-text: #222B26;
  --color-body: #5B6660;
  --color-bg: #F8F7F3;
  --color-surface: #FFFFFF;
  --color-border: #E7E7E1;
  --color-green-dark: #0F3B2F;
  --color-footer: #101D18;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-soft: 0 2px 10px rgba(29, 45, 36, 0.04);
  --shadow-hover: 0 16px 40px rgba(29, 45, 36, 0.1);
  --shadow-header: 0 4px 24px rgba(31, 42, 36, 0.08);
  --container: 1200px;
  --space-section: clamp(64px, 8vw, 108px);
  --font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", -apple-system, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--color-accent); }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0 0 1.2em; }
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .6em;
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}
button, input, select, textarea { font-family: inherit; }
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}
.container {
  width: 100%;
  max-width: var(--container);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.section { padding: var(--space-section) 0; }
.section-head {
  text-align: left;
  margin-bottom: clamp(32px, 5vw, 56px);
  position: relative;
}
.section-head .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 12px;
}
.section-head .eyebrow::before {
  content: "";
  width: 28px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 3px;
}
.section-head h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 14px;
}
.section-head p {
  color: var(--color-body);
  font-size: 1.0625rem;
  max-width: 680px;
  margin-bottom: 0;
}
.text-center .section-head p { margin-left: auto; margin-right: auto; }

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 14px 0;
  background: rgba(10, 29, 23, 0.35);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
  transition: background .35s ease, box-shadow .35s ease, border-color .35s ease, padding .35s ease;
}
.site-header.is-scrolled {
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(220, 225, 220, 0.8);
  box-shadow: var(--shadow-header);
  padding: 8px 0;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand-logo {
  font-size: 1.28rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: #fff;
  display: inline-flex;
  align-items: baseline;
  white-space: nowrap;
  padding: 4px 0;
}
.brand-logo .logo-mark {
  color: #fff;
}
.brand-logo span {
  font-weight: 400;
  font-size: .92rem;
  opacity: .85;
  margin-left: 2px;
}
.site-header.is-scrolled .brand-logo,
.site-header.is-scrolled .brand-logo .logo-mark { color: var(--color-text); }
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  margin-right: 8px;
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.main-nav a {
  display: inline-block;
  padding: 9px 16px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.92);
  border-radius: 8px;
  transition: background .2s, color .2s;
  position: relative;
}
.site-header.is-scrolled .main-nav a { color: var(--color-text); }
.main-nav a:hover { color: #fff; background: rgba(255,255,255,0.1); }
.site-header.is-scrolled .main-nav a:hover { color: var(--color-primary); background: var(--color-primary-light); }
.main-nav a.active { color: #fff; font-weight: 700; }
.site-header.is-scrolled .main-nav a.active { color: var(--color-primary); }
.main-nav a.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  border-radius: 3px;
  background: var(--color-accent);
}
.header-actions { display: flex; align-items: center; gap: 12px; }
.btn-login-header {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(232, 85, 45, .3);
  transition: background .2s, transform .2s, box-shadow .2s;
  white-space: nowrap;
}
.btn-login-header:hover { background: var(--color-accent-dark); color: #fff; transform: translateY(-1px); }
.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.12);
  border-radius: 10px;
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.site-header.is-scrolled .mobile-toggle { color: var(--color-text); border-color: rgba(0,0,0,0.15); background: transparent; }
.mobile-toggle .icon-bar {
  display: block;
  width: 18px;
  height: 2px;
  margin: 3px auto;
  background: currentColor;
  border-radius: 2px;
}
.mobile-nav-panel {
  display: none;
  position: fixed;
  top: 0; left: 0;
  width: 100%;
  height: 100vh;
  background: var(--color-dark);
  z-index: 200;
  padding: 88px 32px 32px;
  overflow-y: auto;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s ease, visibility .3s ease;
}
.mobile-nav-panel.open { opacity: 1; visibility: visible; }
.mobile-nav-panel ul li { border-bottom: 1px solid rgba(255,255,255,0.1); }
.mobile-nav-panel ul li a {
  display: block;
  padding: 16px 4px;
  color: rgba(255,255,255,0.9);
  font-size: 1.25rem;
  font-weight: 600;
}
.mobile-nav-panel .btn-mobile-login {
  display: block;
  text-align: center;
  margin-top: 28px;
}
.mobile-nav-close {
  position: absolute;
  top: 20px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}

/* Hero */
.hero {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  background: linear-gradient(105deg, rgba(12, 37, 29, .85) 0%, rgba(16, 53, 40, .72) 42%, rgba(20, 80, 60, .45) 100%), url('/assets/images/backpic/back-1.png') no-repeat center center / cover;
  color: #fff;
  overflow: hidden;
  padding: 160px 0 120px;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 90px;
  background: linear-gradient(to bottom, transparent, var(--color-bg));
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 16px;
  border: 1px solid rgba(255,255,255,0.28);
  background: rgba(255,255,255,0.1);
  backdrop-filter: blur(8px);
  border-radius: 999px;
  font-size: 13px;
  color: rgba(255,255,255,0.95);
  margin-bottom: 24px;
}
.hero-badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3CD68F;
  display: inline-block;
  box-shadow: 0 0 0 4px rgba(60,214,143,.18);
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.9rem);
  font-weight: 800;
  line-height: 1.18;
  color: #fff;
  margin-bottom: 22px;
  letter-spacing: -0.01em;
  max-width: 760px;
}
.hero h1 .text-stroke {
  color: transparent;
  -webkit-text-stroke: 1px rgba(255,255,255,0.55);
}
.hero-sub {
  font-size: clamp(1.0625rem, 1.4vw, 1.25rem);
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 600px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 28px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border-radius: 10px; font-weight: 700; cursor: pointer; border: none; transition: all .25s ease; letter-spacing: .01em; }
.btn-primary {
  background: var(--color-accent);
  color: #fff;
  padding: 15px 34px;
  font-size: 1rem;
  box-shadow: 0 8px 24px rgba(232, 85, 45, .4);
}
.btn-primary:hover { background: var(--color-accent-dark); transform: translateY(-2px); box-shadow: 0 12px 32px rgba(232,85,45,.38); }
.btn-primary:active { transform: scale(.98); }
.btn-outline-light {
  background: rgba(255,255,255,0.1);
  color: #fff;
  border: 1px solid rgba(255,255,255,0.5);
  backdrop-filter: blur(8px);
  padding: 15px 34px;
  font-size: 1rem;
}
.btn-outline-light:hover { background: rgba(255,255,255,0.18); border-color: rgba(255,255,255,0.9); color: #fff; }
.hero-trust { display: flex; flex-wrap: wrap; gap: 24px; }
.hero-trust li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255,255,255,0.82); }
.hero-trust li i { font-style: normal; width: 20px; height: 20px; border-radius: 50%; background: rgba(255,255,255,.14); display: inline-flex; align-items: center; justify-content: center; font-size: 12px; }
.hero-vs-card {
  display: none;
}
@keyframes pulseRing {
  0% { box-shadow: 0 0 0 0 rgba(60, 214, 143, .4); }
  70% { box-shadow: 0 0 0 22px rgba(60, 214, 143, 0); }
  100% { box-shadow: 0 0 0 0 rgba(60, 214, 143, 0); }
}

/* Section utility */
.bg-white { background: #fff; }
.bg-soft { background: var(--color-bg); }
.bg-green-soft { background: #EDF2EC; }
.text-center { text-align: center; }

/* Feature cards */
.feature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.feature-card {
  background: linear-gradient(145deg, #ffffff 0%, #f3f7f4 100%);
  border-radius: var(--radius-lg);
  padding: clamp(28px, 4vw, 46px);
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(231, 231, 225, .5);
  position: relative;
  overflow: hidden;
  transition: transform .3s ease, box-shadow .3s ease;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 4px;
  height: 0;
  background: var(--color-accent);
  transition: height .35s ease;
  border-radius: 0 4px 4px 0;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.feature-card:hover::before { height: 100%; }
.feature-card.large { grid-column: span 1; grid-row: span 2; display: flex; flex-direction: column; justify-content: space-between; min-height: 340px; background: linear-gradient(150deg, var(--color-primary) 0%, var(--color-primary-dark) 60%, #0f4738 100%); border: none; }
.feature-card.large h3 { color: #fff; }
.feature-card.large p { color: rgba(255,255,255,.82); }
.feature-card .card-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--color-primary);
}
.feature-card.large .card-icon { background: rgba(255,255,255,.16); color: #fff; }
.feature-card h3 { font-size: 1.35rem; margin-bottom: 12px; }
.feature-card p { color: var(--color-body); font-size: .975rem; line-height: 1.75; max-width: 460px; }
.feature-card.large p { color: rgba(255,255,255,.78); }
.feature-card .card-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; font-size: .9375rem; color: var(--color-primary); margin-top: 16px; }
.feature-card.large .card-link { color: #fff; }
.feature-card .card-link:hover span { transform: translateX(4px); }
.feature-card .card-link span { transition: transform .2s ease; }

/* Process steps */
.process-section { background: #EDF2EC; position: relative; }
.process-wrap { display: flex; align-items: center; gap: clamp(32px, 5vw, 72px); }
.process-visual { flex: 1; position: relative; }
.process-visual .visual-bg {
  position: absolute;
  inset: 20px -20px -20px 20px;
  background: var(--color-primary);
  border-radius: 28px;
  opacity: .08;
  transform: rotate(-2deg);
}
.process-visual img {
  border-radius: 24px;
  box-shadow: var(--shadow-hover);
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  position: relative;
}
.process-content { flex: 1; }
.process-step { display: flex; gap: 22px; align-items: flex-start; padding: 20px 0; border-bottom: 1px solid rgba(23,107,82,0.12); }
.process-step:last-child { border-bottom: none; }
.step-num {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  color: rgba(23, 107, 82, 0.2);
  min-width: 52px;
  position: relative;
}
.step-num::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 18px;
  height: 3px;
  background: var(--color-accent);
  border-radius: 3px;
}
.process-step h4 { font-size: 1.125rem; margin-bottom: 4px; }
.process-step p { color: var(--color-body); font-size: .9375rem; margin-bottom: 0; }

/* Stats / social proof */
.stats-band {
  background: linear-gradient(135deg, #14231D 0%, #0F3B2F 100%);
  color: #fff;
  padding: clamp(56px, 6vw, 84px) 0;
}
.stats-band h2 { color: #fff; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.stat-item { text-align: left; padding-right: 24px; border-right: 1px solid rgba(255,255,255,.15); }
.stat-item:last-child { border-right: none; }
.stat-num { font-size: clamp(2.2rem, 4vw, 3.2rem); font-weight: 800; line-height: 1; color: #fff; margin-bottom: 8px; display: flex; align-items: baseline; gap: 4px; }
.stat-num span { font-size: 1.1rem; color: rgba(255,255,255,.7); font-weight: 500; margin-left: 2px; }
.stat-label { font-size: 14px; color: rgba(255,255,255,.66); letter-spacing: .03em; }
.stat-item small { display: block; margin-top: 6px; font-size: 12px; color: rgba(255,255,255,.34); }
.quote-row { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-top: 56px; }
.quote-card { border-left: 3px solid var(--color-accent); padding: 6px 0 6px 26px; font-size: 1.0625rem; line-height: 1.85; color: rgba(255,255,255,.8); font-style: italic; }
.quote-card strong { display: block; margin-top: 10px; font-style: normal; font-size: 14px; color: rgba(255,255,255,.5); }

/* News list */
.news-block { background: var(--color-bg); }
.news-layout { display: grid; grid-template-columns: 7fr 5fr; gap: 40px; align-items: start; }
.news-list { display: flex; flex-direction: column; gap: 14px; }
.news-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 26px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  transition: box-shadow .25s ease, transform .25s ease;
}
.news-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(23, 107, 82, .3); }
.news-main { min-width: 0; }
.news-meta { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.tag-chip {
  display: inline-block;
  padding: 3px 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  line-height: 1.5;
}
.news-meta time { font-size: 13px; color: #9AA39D; font-variant-numeric: tabular-nums; }
.news-title { font-size: 1.125rem; font-weight: 700; color: var(--color-text); line-height: 1.5; display: block; overflow: hidden; text-overflow: ellipsis; }
.news-title:hover { color: var(--color-primary); }
.news-summary { font-size: .9375rem; color: var(--color-body); line-height: 1.7; margin-bottom: 6px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .9375rem;
  font-weight: 600;
  color: var(--color-primary);
  white-space: nowrap;
  flex-shrink: 0;
}
.news-link:hover span { transform: translateX(4px); }
.news-link span { transition: transform .2s ease; }
.news-empty {
  background: #fff;
  border: 1px dashed var(--color-border);
  border-radius: 16px;
  padding: 48px 32px;
  text-align: center;
  color: var(--color-body);
}
.news-empty .empty-ico { font-size: 36px; margin-bottom: 12px; }
.news-aside { display: flex; flex-direction: column; gap: 20px; }
.aside-card {
  background: linear-gradient(160deg, #fff, #F4F8F5);
  border: 1px solid var(--color-border);
  border-radius: 18px;
  padding: 26px 24px;
}
.aside-card h4 { font-size: 1.0625rem; margin-bottom: 16px; display: flex; align-items: center; gap: 8px; }
.aside-card h4::before { content: ""; width: 5px; height: 18px; background: var(--color-accent); border-radius: 4px; }
.aside-link-list li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  font-size: .9375rem;
  color: var(--color-body);
  border-bottom: 1px solid rgba(231,231,225,.7);
  transition: color .2s, padding-left .2s;
}
.aside-link-list li a:hover { color: var(--color-primary); padding-left: 6px; }
.aside-link-list li:last-child a { border-bottom: none; }
.aside-link-list li a i { font-style: normal; color: var(--color-primary); }
.aside-guide-card {
  background: linear-gradient(145deg, var(--color-primary) 0%, #123f30 100%);
  border-radius: 18px;
  color: #fff;
  padding: 26px;
  overflow: hidden;
  position: relative;
}
.aside-guide-card::after { content: "→"; position: absolute; right: 16px; bottom: 6px; font-size: 72px; font-weight: 800; color: rgba(255,255,255,.08); line-height: 1; }
.aside-guide-card h4 { color: #fff; font-size: 1.0625rem; margin-bottom: 8px; }
.aside-guide-card p { color: rgba(255,255,255,.72); font-size: .9375rem; margin-bottom: 18px; }
.btn-block { display: block; width: 100%; text-align: center; }
.btn-light-green { background: #fff; color: var(--color-primary); padding: 10px 18px; border-radius: 8px; font-weight: 700; font-size: .9375rem; }
.btn-light-green:hover { background: var(--color-primary-light); color: var(--color-primary); transform: translateY(-1px); }
.view-all-wrap { text-align: center; margin-top: 40px; }

/* FAQ */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: background .25s ease, border-color .25s ease;
}
.faq-item:has(.faq-q input:checked) { background: #F2F7F4; border-color: rgba(23,107,82,.25); }
.faq-q { position: relative; }
.faq-q input { position: absolute; opacity: 0; pointer-events: none; }
.faq-q label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  min-height: 56px;
  margin-bottom: 0;
  transition: color .2s;
}
.faq-q label:hover { color: var(--color-primary); }
.faq-arrow {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  transition: transform .3s ease, background .2s;
}
.faq-q input:checked ~ label .faq-arrow { transform: rotate(180deg); background: var(--color-primary); color: #fff; }
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .3s ease;
}
.faq-q input:checked ~ .faq-a { max-height: 360px; }
.faq-a-inner { padding: 0 22px 22px; color: var(--color-body); font-size: .95rem; line-height: 1.75; border-top: 1px solid rgba(23,107,82,.08); padding-top: 14px; }

/* CTA */
.cta-section {
  background: linear-gradient(130deg, #14231D 0%, #176B52 60%, #1F8A6A 100%);
  color: #fff;
  border-radius: 28px;
  padding: clamp(40px, 6vw, 80px);
  overflow: hidden;
  position: relative;
  margin-bottom: 0;
}
.cta-section::before {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 40px solid rgba(255,255,255,.06);
}
.cta-section::after {
  content: "";
  position: absolute;
  left: -40px;
  bottom: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 50px solid rgba(0,0,0,.08);
}
.cta-inner { position: relative; z-index: 2; display: flex; justify-content: space-between; align-items: center; gap: 40px; flex-wrap: wrap; }
.cta-text h2 { font-size: clamp(1.7rem, 3vw, 2.5rem); color: #fff; margin-bottom: 14px; }
.cta-text p { color: rgba(255,255,255,.78); font-size: 1.0625rem; margin-bottom: 0; max-width: 570px; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn-accent { background: var(--color-accent); color: #fff; padding: 15px 34px; border-radius: 10px; font-size: 1rem; font-weight: 700; box-shadow: 0 8px 28px rgba(232,85,45,.4); }
.btn-accent:hover { background: var(--color-accent-dark); color: #fff; }
.btn-white-outline { border: 1.5px solid rgba(255,255,255,.7); color: #fff; background: transparent; padding: 14px 34px; border-radius: 10px; font-weight: 700; }
.btn-white-outline:hover { background: rgba(255,255,255,.12); color: #fff; }

/* Footer */
.site-footer {
  background: var(--color-footer);
  color: rgba(255,255,255,.65);
  padding-top: clamp(56px, 6vw, 80px);
  margin-top: var(--space-section);
}
.footer-grid { display: grid; grid-template-columns: 4fr 2fr 3fr 3fr; gap: 40px; padding-bottom: 48px; }
.footer-brand .brand-logo { color: #fff; margin-bottom: 12px; }
.footer-brand p { font-size: .9375rem; line-height: 1.8; max-width: 340px; color: rgba(255,255,255,.58); }
.footer-col h5 { color: #fff; font-size: 1rem; margin-bottom: 16px; position: relative; padding-bottom: 10px; }
.footer-col h5::after { content: ""; position: absolute; bottom: 0; left: 0; width: 22px; height: 2px; background: var(--color-accent); }
.footer-col ul li { margin-bottom: 4px; }
.footer-col ul li a { color: rgba(255,255,255,.55); font-size: .9375rem; padding: 5px 0; display: inline-block; }
.footer-col ul li a:hover { color: #fff; }
.footer-col ul li a i { font-style: normal; margin-right: 6px; opacity: .7; }
.footer-contact li { display: flex; gap: 10px; align-items: center; color: rgba(255,255,255,.55); font-size: .9375rem; padding: 4px 0; }
.footer-contact li i { font-style: normal; width: 32px; height: 32px; flex-shrink: 0; border-radius: 8px; background: rgba(255,255,255,.08); display: inline-flex; align-items: center; justify-content: center; font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 22px 0;
  font-size: .875rem;
  color: rgba(255,255,255,.4);
}
.footer-bottom .container { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-bottom-links { display: flex; gap: 24px; }
.footer-bottom-links a { color: rgba(255,255,255,.4); font-size: .875rem; }
.footer-bottom-links a:hover { color: #fff; }

/* Fixed bottom bar - only index */
.floating-login-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  background: rgba(13, 32, 25, 0.94);
  backdrop-filter: blur(14px);
  border-top: 1px solid rgba(255,255,255,.12);
  z-index: 90;
  transform: translateY(100%);
  transition: transform .4s ease;
  padding: 12px 0;
}
.floating-login-bar.is-visible { transform: translateY(0); }
.floating-login-bar .container { display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.floating-login-bar .float-text { color: rgba(255,255,255,.9); font-size: 15px; }
.floating-login-bar .float-text strong { color: #fff; }
.btn-float-login { background: var(--color-accent); color: #fff; padding: 11px 30px; border-radius: 8px; font-weight: 700; font-size: .9375rem; box-shadow: 0 4px 16px rgba(232,85,45,.4); transition: background .2s; white-space: nowrap; }
.btn-float-login:hover { background: var(--color-accent-dark); color: #fff; }
body.has-float-bar { padding-bottom: 76px; }

/* helpers */
.mt-1 { margin-top: 1rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; }
.mb-2 { margin-bottom: 2rem; }
.hidden { display: none; }
.tx-body { color: var(--color-body); }

/* Responsive */
@media screen and (max-width: 1024px) {
  .main-nav, .header-actions .btn-login-header { display: none; }
  .mobile-toggle { display: inline-flex; }
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .feature-card.large { grid-row: span 1; }
  .news-layout { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
  .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,.08); padding-bottom: 12px; }
  .stat-item:nth-child(3), .stat-item:nth-child(4) { border-bottom: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media screen and (max-width: 768px) {
  .container { padding-left: 20px; padding-right: 20px; }
  .process-wrap { flex-direction: column; }
  .process-visual { width: 100%; }
  .quote-row { grid-template-columns: 1fr; gap: 24px; }
  .cta-inner { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; }
}
@media screen and (max-width: 640px) {
  .hero { padding: 120px 0 80px; min-height: 88vh; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-trust { flex-direction: column; gap: 12px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card.large { min-height: auto; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-item { border-bottom: 1px solid rgba(255,255,255,.08); padding-bottom: 20px; }
  .stat-item:nth-child(n) { border-bottom-style: solid; }
  .stat-item:last-child { border-bottom: none; }
  .news-item { flex-direction: column; align-items: flex-start; gap: 12px; padding: 22px; }
  .floating-login-bar .container { gap: 12px; }
  .floating-login-bar .float-text { font-size: 13px; }
  .btn-float-login { padding: 10px 18px; font-size: .875rem; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
  .footer-bottom-links { gap: 16px; }
  .faq-a-inner { font-size: .9rem; }
  .section-head .eyebrow { font-size: 13px; }
  .process-step { padding: 18px 0; }
  .step-num { font-size: 2.1rem; min-width: 44px; }
  .mobile-nav-panel { padding-top: 100px; }
}

/* roulang page: category1 */
:root{
  --color-primary:#176B52;
  --color-primary-deep:#0F4C3A;
  --color-primary-light:#DFEDE8;
  --color-accent:#E8552D;
  --color-accent-dark:#C94623;
  --color-dark:#14231D;
  --color-text:#222B26;
  --color-body:#5B6660;
  --color-bg:#F8F7F3;
  --color-surface:#FFFFFF;
  --color-border:#E7E7E1;
  --shadow-sm:0 2px 8px rgba(28,45,36,0.05);
  --shadow-md:0 8px 30px rgba(28,45,36,0.10);
  --radius-card:18px;
  --radius-img:14px;
  --radius-btn:9px;
  --container:1220px;
  --ease:.2s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC","Source Han Sans CN","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  color:var(--color-text);
  background:var(--color-bg);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-text);text-decoration:none;transition:color var(--ease)}
p{color:var(--color-body)}
ul,ol{list-style:none}
h1,h2,h3,h4,h5{line-height:1.35;margin:0;font-weight:700;color:var(--color-text)}
h2{font-size:clamp(1.8rem,3vw,2.5rem);letter-spacing:.01em}
h3{font-size:1.3rem}
.container{max-width:var(--container);margin:0 auto;padding-left:24px;padding-right:24px}
.grid-container{max-width:var(--container)}
:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px;border-radius:4px}

/* 按钮系统 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-weight:700;font-size:.95rem;line-height:1;
  padding:.95rem 1.6rem;
  border-radius:var(--radius-btn);
  border:0;cursor:pointer;
  box-shadow:0 4px 14px rgba(20,35,29,0.12);
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn:active{transform:scale(.98)}
.btn-accent{background:var(--color-accent);color:#fff}
.btn-accent:hover{background:var(--color-accent-dark);color:#fff;box-shadow:0 8px 24px rgba(232,85,45,.24)}
.btn-primary{background:var(--color-primary);color:#fff}
.btn-primary:hover{background:var(--color-primary-deep);color:#fff}
.btn-ghost{background:rgba(255,255,255,.10);color:#fff;border:1px solid rgba(255,255,255,.65);box-shadow:none}
.btn-ghost:hover{background:rgba(255,255,255,.18);color:#fff;border-color:#fff}
.btn-line{background:transparent;color:var(--color-primary);border:1px solid var(--color-primary);box-shadow:none}
.btn-line:hover{background:var(--color-primary-light)}
.btn-white{background:#fff;color:var(--color-primary);box-shadow:0 8px 24px rgba(0,0,0,.12)}
.btn-white:hover{background:#F2F7F4;color:var(--color-primary-deep)}

/* 导航 */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:100;
  padding:16px 20px;
  background:linear-gradient(to bottom,rgba(4,15,10,.48),rgba(4,15,10,.15));
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid rgba(255,255,255,.13);
  transition:background var(--ease),border-color var(--ease),box-shadow var(--ease),padding var(--ease);
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.96);
  border-bottom-color:rgba(0,0,0,.05);
  box-shadow:0 10px 34px rgba(16,32,25,.10);
  padding:10px 20px;
}
.site-header .container{
  display:flex;align-items:center;justify-content:space-between;gap:28px;
}
.header-inner{display:flex;align-items:center;gap:16px;flex-shrink:0}
.brand-logo{
  display:inline-flex;align-items:baseline;gap:6px;
  font-size:1.18rem;letter-spacing:.02em;white-space:nowrap;
  color:#fff;
}
.brand-logo .logo-mark{font-weight:800;color:inherit}
.brand-logo span:last-child{font-weight:400;opacity:.9}
.site-header.is-scrolled .brand-logo{color:var(--color-text)}
.main-nav{
  display:flex;margin-left:auto;
}
.main-nav ul{display:flex;align-items:center;gap:30px}
.main-nav a{
  position:relative;display:inline-block;
  color:rgba(255,255,255,.90);font-weight:600;font-size:.95rem;
  padding:8px 0;transition:color var(--ease);
}
.main-nav a::after{
  content:"";position:absolute;left:50%;right:50%;bottom:4px;height:2px;
  background:var(--color-accent);border-radius:2px;transition:left .24s ease,right .24s ease;
}
.main-nav a:hover{color:#fff}
.main-nav a:hover::after{left:0;right:0}
.main-nav a.active{color:#fff}
.main-nav a.active::after{left:0;right:0;background:#fff}
.site-header.is-scrolled .main-nav a{color:var(--color-text)}
.site-header.is-scrolled .main-nav a:hover{color:var(--color-primary)}
.site-header.is-scrolled .main-nav a.active{color:var(--color-primary)}
.site-header.is-scrolled .main-nav a.active::after{background:var(--color-accent)}
.header-cta{
  flex-shrink:0;
  background:var(--color-accent);color:#fff;
  font-size:.9rem;font-weight:700;padding:.7rem 1.35rem;border-radius:40px;
  box-shadow:0 6px 20px rgba(232,85,45,.24);
  transition:background var(--ease),transform var(--ease);
}
.header-cta:hover{background:var(--color-accent-dark);color:#fff;transform:translateY(-2px)}
.nav-toggle{
  display:none;margin-left:6px;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;background:transparent;border:0;cursor:pointer;
  padding:8px;border-radius:8px;
}
.nav-toggle span{display:block;height:2px;width:100%;background:#fff;border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.site-header.is-scrolled .nav-toggle span{background:var(--color-text)}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 页面 Hero */
.page-hero{
  position:relative;
  min-height:78vh;
  padding:184px 0 100px;
  display:flex;align-items:center;
  background:linear-gradient(100deg,rgba(4,16,10,.89) 0%,rgba(8,38,27,.76) 45%,rgba(7,30,21,.48) 100%),url('/assets/images/backpic/back-1.png') center 24%/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:90px;
  background:linear-gradient(to bottom,transparent,var(--color-bg));
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;max-width:1000px;text-align:center}
.breadcrumb{
  display:inline-flex;align-items:center;gap:10px;
  padding:7px 16px;margin-bottom:24px;
  color:rgba(255,255,255,.80);font-size:.82rem;font-weight:500;
  background:rgba(255,255,255,.13);border:1px solid rgba(255,255,255,.23);
  border-radius:999px;backdrop-filter:blur(8px);
  transition:background var(--ease);
}
.breadcrumb a{color:#fff;opacity:.85}
.breadcrumb a:hover{opacity:1;color:#fff}
.breadcrumb i{font-style:normal;opacity:.55}
.page-hero h1{
  color:#fff;
  font-size:clamp(3rem,7vw,5.4rem);
  font-weight:900;
  line-height:1.12;
  letter-spacing:.01em;
}
.hero-dec{
  width:64px;height:5px;border-radius:99px;background:var(--color-accent);
  margin:22px auto;
  position:relative;overflow:visible;
}
.hero-dec::before{
  content:"";position:absolute;left:74px;top:1px;width:34px;height:3px;border-radius:99px;background:rgba(255,255,255,.55);
}
.hero-lead{
  max-width:760px;margin:14px auto 0;
  color:rgba(255,255,255,.94);
  font-size:clamp(1.02rem,1.5vw,1.22rem);
  line-height:1.9;
}
.hero-actions{
  display:flex;justify-content:center;flex-wrap:wrap;gap:16px;margin-top:38px;
}
.hero-meta{
  display:flex;justify-content:center;flex-wrap:wrap;gap:12px 28px;
  list-style:none;margin-top:42px;
  color:rgba(255,255,255,.86);font-size:.9rem;
}
.hero-meta li{display:inline-flex;align-items:center;gap:7px}
.hero-meta li::before{content:"◆";font-size:.5rem;color:var(--color-accent);transform:translateY(-1px)}

/* 板块通用 */
.section{padding:96px 0}
.section-sm{padding:64px 0}
.section-alt{background:var(--color-surface)}
.section-soft{background:var(--color-bg)}
.section-dark{background:var(--color-dark);color:#fff}
.section-sage{background:#EDF2EC}
.eyebrow{
  display:inline-block;
  font-size:.78rem;font-weight:700;letter-spacing:.18em;text-transform:uppercase;
  color:var(--color-primary);margin-bottom:14px;
}
.section-centre{text-align:center}
.section-head{max-width:740px;margin:0 auto 52px}
.section-head p{margin-top:16px;font-size:1.02rem;color:var(--color-body)}
.section-title{position:relative;padding-left:20px}
.section-title::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:5px;border-radius:4px;
  background:var(--color-accent);
}
.heading-center .section-title{padding-left:0}
.heading-center .section-title::before{display:none}
.section-dark .section-title{color:#fff}

/* 功能条 */
.service-summary{
  background:var(--color-surface);
  border-bottom:1px solid var(--color-border);
  padding:72px 0 78px;
}
.strap-row{
  display:grid;grid-template-columns:repeat(4,1fr);gap:28px;
  margin-top:48px;
}
.strap-item{
  position:relative;
  background:var(--color-bg);
  border-radius:var(--radius-card);
  border:1px solid transparent;
  padding:34px 26px 28px;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease);
}
.strap-item::before{
  content:"";position:absolute;left:26px;top:-1px;right:26px;height:3px;
  border-radius:99px;background:var(--color-accent);
  transform:scaleX(0);transform-origin:left;transition:transform .3s ease;
}
.strap-item:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);background:#fff}
.strap-item:hover::before{transform:scaleX(1)}
.strap-icon{
  width:52px;height:52px;border-radius:16px;
  background:var(--color-primary-light);color:var(--color-primary);
  display:flex;align-items:center;justify-content:center;
  font-size:1.55rem;font-weight:800;margin-bottom:22px;
}
.strap-item h3{font-size:1.12rem;margin-bottom:10px}
.strap-item p{font-size:.92rem;color:var(--color-body)}

/* 深色数据带 */
.stat-band{
  background:linear-gradient(105deg,#0D241A,#1B5540 56%,#0D241A);
  color:#fff;padding:64px 0;
  position:relative;overflow:hidden;
}
.stat-band::after{
  content:"";position:absolute;right:-120px;top:-60px;width:420px;height:420px;
  border:42px solid rgba(255,255,255,.045);border-radius:50%;
}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.stat-cell{position:relative;text-align:center;padding:0 18px}
.stat-cell + .stat-cell::before{
  content:"";position:absolute;left:0;top:16%;bottom:16%;width:1px;background:rgba(255,255,255,.15);
}
.stat-num{font-size:clamp(1.7rem,3vw,2.5rem);font-weight:900;letter-spacing:.02em;color:#fff}
.stat-label{margin-top:8px;font-size:.88rem;color:rgba(255,255,255,.78)}

/* 图文 split */
.split-wrap{padding:96px 0}
.split-card{
  display:grid;grid-template-columns:1fr 1fr;
  gap:72px;align-items:center;margin-bottom:80px;
}
.split-card:last-child{margin-bottom:0}
.split-media{
  border-radius:calc(var(--radius-card) + 6px);
  overflow:hidden;box-shadow:var(--shadow-md);
  background:var(--color-surface);
  position:relative;
}
.split-media::before{
  content:"";position:absolute;inset:auto 24px 0 auto;width:50px;height:6px;
  background:var(--color-accent);border-radius:999px 0 0 0;z-index:2;
}
.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}
.split-content{display:flex;flex-direction:column;align-items:flex-start}
.split-content .split-tag{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:var(--color-primary-light);color:var(--color-primary);
  font-size:.78rem;font-weight:700;letter-spacing:.04em;margin-bottom:22px;
}
.split-content h2{margin-bottom:20px}
.split-content p{margin-bottom:16px}
.split-list{display:grid;gap:12px;margin:12px 0 26px}
.split-list li{
  display:flex;gap:12px;align-items:flex-start;
  color:var(--color-body);font-size:.98rem;
}
.split-list li::before{
  content:"✓";flex-shrink:0;width:24px;height:24px;
  background:var(--color-primary-light);color:var(--color-primary);
  border-radius:50%;font-size:.78rem;font-weight:800;
  display:inline-flex;align-items:center;justify-content:center;margin-top:3px;
}
.split-card.is-flip .split-media{order:2}
.split-card.is-flip .split-content{order:1}

/* 流程模块 */
.process-section{
  background:linear-gradient(112deg,#0C251A 0%,#123C2A 60%,#0F3022 100%);
  color:#fff;padding:96px 0;position:relative;overflow:hidden;
}
.process-section::before{
  content:"";position:absolute;left:-10%;bottom:-20%;width:520px;height:520px;
  border:70px solid rgba(255,255,255,.035);border-radius:50%;pointer-events:none;
}
.process-section .section-title{color:#fff}
.process-section .section-head{max-width:600px;text-align:center;margin:0 auto 40px}
.process-section .eyebrow{color:#7FD3AD}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;position:relative;z-index:2}
.process-step{
  padding:42px 30px 34px;border-radius:20px;
  background:rgba(255,255,255,.055);
  border:1px solid rgba(255,255,255,.10);
  backdrop-filter:blur(6px);
  position:relative;
  transition:background .25s ease,transform .25s ease;
}
.process-step:hover{background:rgba(255,255,255,.10);transform:translateY(-5px)}
.process-num{
  font-size:3.2rem;font-weight:900;line-height:1;
  color:rgba(255,255,255,.13);
  display:block;margin-bottom:24px;
  font-family:Arial,sans-serif;
}
.process-step h3{color:#fff;font-size:1.1rem;margin-bottom:12px}
.process-step p{color:rgba(255,255,255,.76);font-size:.93rem}
.process-note{
  position:relative;z-index:2;
  text-align:center;margin-top:48px;color:rgba(255,255,255,.82);
  font-size:.92rem;
}
.process-note a{color:#FFE3D9;font-weight:600;border-bottom:1px solid rgba(255,255,255,.3)}
.process-note a:hover{color:#fff}

/* 服务导航大卡 */
.tool-section{padding:96px 0;background:var(--color-bg)}
.tool-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;margin-top:22px}
.tool-card{
  border-radius:22px;background:var(--color-surface);
  overflow:hidden;box-shadow:var(--shadow-sm);
  border:1px solid transparent;
  transition:box-shadow .28s ease,transform .28s ease,border-color .28s ease;
  display:flex;flex-direction:column;
}
.tool-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-md);border-color:rgba(23,107,82,.15)}
.tool-media{position:relative;overflow:hidden;aspect-ratio:16/10;background:#D7DFD9}
.tool-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.tool-card:hover .tool-media img{transform:scale(1.06)}
.tool-media::after{
  content:"";position:absolute;inset:auto 0 0 0;background:linear-gradient(to top,rgba(20,35,29,.18),transparent 60%);
}
.tool-body{padding:26px;display:flex;flex-direction:column;align-items:flex-start;flex:1}
.tool-body h3{font-size:1.08rem;margin-bottom:10px}
.tool-body p{font-size:.91rem;color:var(--color-body);margin-bottom:18px}
.tool-link{
  margin-top:auto;
  color:var(--color-primary);font-size:.9rem;font-weight:700;
  display:inline-flex;align-items:center;gap:7px;position:relative;
}
.tool-link::after{
  content:"→";font-size:1rem;transition:transform .2s ease;
}
.tool-link:hover::after{transform:translateX(5px)}
.tool-link:focus-visible{outline:2px solid var(--color-accent);outline-offset:4px;border-radius:6px}

/* 服务能力卡片（FAQ 上方） */
.value-section{padding:96px 0;background:var(--color-surface)}
.value-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:30px}
.value-card{
  padding:38px;border-radius:20px;background:var(--color-bg);
  border-left:5px solid var(--color-primary);
  position:relative;overflow:hidden;
  transition:box-shadow var(--ease),transform var(--ease);
}
.value-card:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.value-card.orange{border-left-color:var(--color-accent)}
.value-card h3{font-size:1.25rem;margin-bottom:12px}
.value-card p{font-size:.95rem}
.double-stack{display:grid;gap:30px}
.mini-card{
  background:#fff;border:1px solid var(--color-border);
  border-radius:18px;padding:26px;
  transition:box-shadow var(--ease),border-color .25s ease;
}
.mini-card:hover{box-shadow:var(--shadow-md);border-color:rgba(23,107,82,.35)}

/* 评测与覆盖双列 */
.spotlight{
  display:grid;grid-template-columns:.9fr 1.1fr;gap:68px;align-items:center;
}
.spotlight-cover{border-radius:24px;overflow:hidden;position:relative;box-shadow:var(--shadow-md)}
.spotlight-cover img{width:100%;aspect-ratio:5/4;object-fit:cover}
.spotlight-cover::before{
  content:"";position:absolute;inset:auto auto 18px 18px;width:88px;height:4px;
  background:var(--color-accent);border-radius:999px;
}
.spotlight h2{margin-bottom:20px}
.spotlight p{color:var(--color-body);margin-bottom:20px}

/* FAQ */
.faq-section{background:var(--color-surface);padding:96px 0}
.faq-wrap{max-width:900px;margin:0 auto}
.acc-item{
  background:var(--color-bg);
  border:1px solid var(--color-border);
  border-radius:16px;
  padding:0 28px;
  margin-bottom:12px;
  transition:background .25s ease,border-color .25s ease;
}
.acc-item[open]{background:#F3F8F5;border-color:rgba(23,107,82,.22)}
.acc-item summary{
  list-style:none;cursor:pointer;
  padding:20px 0 18px;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  font-weight:700;color:var(--color-text);font-size:1.02rem;
  user-select:none;transition:color .2s ease;
}
.acc-item summary::-webkit-details-marker{display:none}
.acc-item summary::after{
  content:"";flex-shrink:0;
  width:9px;height:9px;
  border-right:2px solid var(--color-primary);
  border-bottom:2px solid var(--color-primary);
  transform:rotate(45deg) translateY(-4px);
  transition:transform .28s ease;
}
.acc-item[open] summary::after{transform:rotate(-135deg) translateY(-2px)}
.acc-item[open] summary{color:var(--color-primary)}
.acc-body{padding:2px 0 26px;border-top:1px solid rgba(23,107,82,.10)}
.acc-body p{margin-top:17px;font-size:.95rem;line-height:1.9}

/* CTA */
.cta-section{padding:92px 0;background:var(--color-bg);position:relative}
.cta-box{
  background:linear-gradient(100deg,#0D241A 4%,#1B523D 72%,#0C2118);
  border-radius:28px;overflow:hidden;
  padding:70px 64px;
  position:relative;color:#fff;
  box-shadow:0 24px 80px rgba(13,36,26,.25);
}
.cta-box::before{
  content:"";position:absolute;top:-120px;right:-70px;width:300px;height:300px;
  background:radial-gradient(circle,rgba(255,255,255,.10),transparent 65%);
}
.cta-box::after{
  content:"";position:absolute;right:34px;bottom:-30px;width:220px;height:220px;
  border:42px solid rgba(255,255,255,.06);border-radius:50%;pointer-events:none;
}
.cta-box h2{color:#fff;font-size:clamp(1.65rem,2.8vw,2.5rem);max-width:680px}
.cta-box p{color:rgba(255,255,255,.78);margin-top:16px;max-width:680px;font-size:1.03rem}
.cta-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:38px}
.cta-note{margin-top:26px;color:rgba(255,255,255,.6);font-size:.85rem}

/* 新手指引带 */
.tip-band{
  background:var(--color-surface);
  border-top:1px solid var(--color-border);
  padding:44px 0;
}
.tip-flex{display:flex;gap:24px;flex-wrap:wrap;align-items:center;justify-content:space-between}
.tip-flex strong{display:block;color:var(--color-text);font-size:1.06rem}
.tip-flex span{display:block;color:var(--color-body);font-size:.9rem;margin-top:4px}

/* 页脚 */
.site-footer{
  background:var(--color-dark);
  color:rgba(255,255,255,.82);
  padding-top:74px;
  position:relative;
}
.site-footer a{color:rgba(255,255,255,.75)}
.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.15fr;gap:44px;padding-bottom:60px}
.footer-brand .brand-logo{font-size:1.28rem;color:#fff}
.footer-brand p{
  margin-top:20px;color:rgba(255,255,255,.65);
  font-size:.92rem;line-height:1.9;max-width:320px;
}
.footer-col h5{
  color:#fff;font-size:1rem;font-weight:700;
  padding-bottom:14px;margin-bottom:18px;position:relative;
  letter-spacing:.02em;
}
.footer-col h5::after{
  content:"";position:absolute;left:0;bottom:0;width:34px;height:2px;
  background:var(--color-accent);border-radius:99px;
}
.footer-col ul{display:grid;gap:12px}
.footer-col ul li{font-size:.9rem}
.footer-col a{transition:padding-left .2s ease,color .2s ease;display:inline-flex;align-items:center}
.footer-col a::before{content:"›";margin-right:8px;color:var(--color-accent);opacity:0;transform:translateX(-6px);transition:opacity .2s ease,transform .2s ease}
.footer-col li a:hover{padding-left:4px;color:#fff}
.footer-col li a:hover::before{opacity:1;transform:translateX(0)}
.footer-contact li{display:flex;gap:10px;align-items:baseline}
.footer-contact li i{font-style:normal;color:var(--color-accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.10);
  padding:22px 0;
}
.footer-bottom .container{
  display:flex;flex-wrap:wrap;gap:14px 30px;align-items:center;
  justify-content:space-between;
  color:rgba(255,255,255,.5);font-size:.84rem;
}
.footer-bottom-links{display:flex;gap:22px;flex-wrap:wrap;align-items:center}
.footer-bottom-links a{color:rgba(255,255,255,.58)}
.footer-bottom-links a:hover{color:#fff}

/* 移动断点 */
@media (max-width: 1024px){
  .main-nav ul{gap:18px}
  .tool-grid{grid-template-columns:repeat(2,1fr)}
  .process-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:38px}
}

@media (max-width: 860px){
  .site-header,.site-header.is-scrolled{padding:14px 0}
  .site-header .container{flex-wrap:wrap}
  .nav-toggle{display:flex}
  .header-cta{margin-right:4px;font-size:.85rem;padding:.6rem 1rem}
  .main-nav{
    flex-basis:100%;display:none;
    background:#fff;
    border-radius:0 0 18px 18px;
    padding:8px 16px 16px;
    box-shadow:0 18px 40px rgba(16,32,25,.14);
    margin-top:10px;
  }
  .site-header.nav-open .main-nav{display:block}
  .main-nav ul{flex-direction:column;gap:4px;align-items:stretch}
  .site-header .main-nav a,.site-header.is-scrolled .main-nav a{
    color:var(--color-text);
    padding:12px 14px;border-radius:10px;display:block;
  }
  .main-nav a:hover{background:var(--color-primary-light);color:var(--color-primary)}
  .site-header .main-nav a.active,.site-header.is-scrolled .main-nav a.active{color:var(--color-primary);background:#E4EFEA}
  .main-nav a::after,.site-header.is-scrolled .main-nav a.active::after{display:none}
  .page-hero{padding:144px 0 70px;min-height:auto}
  .split-card{grid-template-columns:1fr;gap:36px}
  .split-card.is-flip .split-media{order:1}
  .split-card.is-flip .split-content{order:2}
  .value-grid,.spotlight{grid-template-columns:1fr;gap:20px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{justify-content:center}
  .section{padding:68px 0}
  .section-sm{padding:48px 0}
  .cta-box{padding:46px 28px}
  .stat-band{padding:48px 0}
  .stat-grid{grid-template-columns:repeat(2,1fr);gap:30px 14px}
  .stat-cell + .stat-cell::before{display:none}
  .strap-row{grid-template-columns:repeat(2,1fr)}
}

@media (max-width: 560px){
  .container{padding-left:20px;padding-right:20px}
  .brand-logo{font-size:1.02rem}
  .brand-logo span:last-child{display:none}
  .tool-grid{grid-template-columns:1fr}
  .strap-row,.process-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:2.7rem}
  .section-head p{font-size:.95rem}
  .footer-bottom .container{flex-direction:column;gap:6px;text-align:center}
  .stat-grid{grid-template-columns:1fr 1fr}
  .hero-meta{gap:8px 16px;font-size:.85rem}
  .cta-actions .btn{width:100%}
}

/* roulang page: article */
:root{
    --color-primary:#147A5C;
    --color-primary-dark:#0E5A44;
    --color-primary-light:#E7F1EB;
    --color-accent:#E8542F;
    --color-accent-dark:#C94623;
    --color-dark:#14231D;
    --color-ink:#222B26;
    --color-text:#222B26;
    --color-body:#5B6660;
    --color-bg:#F8F7F3;
    --color-surface:#FFFFFF;
    --color-border:#E7E7E1;
    --radius-lg:20px;
    --radius-md:14px;
    --radius-sm:9px;
    --shadow-soft:0 2px 10px rgba(20,35,29,.04);
    --shadow-card:0 10px 34px rgba(20,35,29,.08);
    --font-main:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:var(--font-main);
    color:var(--color-text);
    background:var(--color-bg);
    line-height:1.75;
    font-size:1rem;
  }
  p{line-height:1.8;margin:0 0 1.1em;}
  a{color:var(--color-primary);text-decoration:none;transition:color .2s ease,background .2s ease,border-color .2s ease;}
  img{max-width:100%;height:auto;display:block;}
  button{border:0;background:none;cursor:pointer;font:inherit;}
  ul,ol{list-style:none;margin:0;padding:0;}
  h1,h2,h3,h4,h5,h6{margin:0 0 .6em;line-height:1.3;font-weight:800;color:var(--color-ink);letter-spacing:-.01em;}
  .container{width:100%;max-width:1200px;margin:0 auto;padding-left:22px;padding-right:22px;}
  .site-header{
    position:fixed;
    top:0;left:0;
    width:100%;
    height:78px;
    z-index:900;
    display:flex;
    align-items:center;
    background:linear-gradient(180deg,rgba(10,20,15,.46) 0%,rgba(10,20,15,.12) 100%);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    border-bottom:1px solid rgba(255,255,255,.16);
    transition:background .3s ease,border-color .3s ease,box-shadow .3s ease;
  }
  .site-header .container{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
  }
  .site-header.is-scrolled{
    background:rgba(255,255,255,.96);
    border-bottom-color:rgba(20,35,29,.06);
    box-shadow:0 10px 34px rgba(20,35,29,.09);
  }
  .brand-logo{
    display:inline-flex;
    align-items:baseline;
    gap:.28em;
    flex-shrink:0;
    color:#fff;
    font-weight:800;
    font-size:1.16rem;
    letter-spacing:-.02em;
    line-height:1.2;
    text-decoration:none;
  }
  .brand-logo .logo-mark{
    color:#fff;
    background:rgba(255,255,255,.16);
    border:1px solid rgba(255,255,255,.22);
    padding:.18rem .62rem;
    border-radius:9px;
    transition:background .2s ease,color .2s ease,border-color .2s ease;
  }
  .brand-logo:hover .logo-mark{
    background:rgba(255,255,255,.26);
  }
  .site-header.is-scrolled .brand-logo,
  .site-header.nav-open .brand-logo{
    color:var(--color-ink);
  }
  .site-header.is-scrolled .brand-logo .logo-mark,
  .site-header.nav-open .brand-logo .logo-mark{
    color:var(--color-primary-dark);
    background:var(--color-primary-light);
    border-color:rgba(20,122,92,.18);
  }
  .main-nav ul{list-style:none;display:flex;align-items:center;gap:2px;}
  .main-nav a{
    color:rgba(255,255,255,.95);
    font-weight:600;
    font-size:.95rem;
    display:inline-block;
    padding:.55rem .95rem;
    border-radius:10px;
    text-decoration:none;
    transition:color .2s ease,background .2s ease,transform .2s ease;
    position:relative;
  }
  .main-nav a:hover{
    background:rgba(255,255,255,.14);
    color:#fff;
  }
  .main-nav a.active{
    color:#fff;
    background:rgba(255,255,255,.18);
    box-shadow:inset 0 0 0 1px rgba(255,255,255,.16);
  }
  .site-header.is-scrolled .main-nav a,
  .site-header.nav-open .main-nav a{
    color:var(--color-ink);
  }
  .site-header.is-scrolled .main-nav a:hover,
  .site-header.nav-open .main-nav a:hover{
    color:var(--color-primary-dark);
    background:var(--color-primary-light);
  }
  .site-header.is-scrolled .main-nav a.active,
  .site-header.nav-open .main-nav a.active{
    color:var(--color-primary-dark);
    background:var(--color-primary-light);
    box-shadow:none;
  }
  .nav-toggle{
    display:none;
    width:44px;
    height:44px;
    flex-shrink:0;
    align-items:center;
    justify-content:center;
    flex-direction:column;
    gap:5px;
    border:1px solid rgba(255,255,255,.34);
    border-radius:10px;
    padding:10px;
    background:rgba(0,0,0,.08);
    transition:border-color .2s ease,background .2s ease;
  }
  .nav-toggle span{
    display:block;
    width:100%;
    height:2px;
    background:#fff;
    border-radius:4px;
    transition:background .2s ease,transform .2s ease,opacity .2s ease;
  }
  .site-header.is-scrolled .nav-toggle,
  .site-header.nav-open .nav-toggle{
    border-color:rgba(20,35,29,.18);
    background:rgba(20,35,29,.04);
  }
  .site-header.is-scrolled .nav-toggle span,
  .site-header.nav-open .nav-toggle span{
    background:var(--color-ink);
  }
  a:focus-visible,button:focus-visible{
    outline:2px solid var(--color-accent);
    outline-offset:3px;
    border-radius:6px;
  }
  .skip-link{
    position:absolute;
    left:-999px;
    top:0;
    background:#fff;
    color:#222;
    padding:8px 16px;
    z-index:1000;
  }
  .skip-link:focus{left:0;}
  .article-hero{
    position:relative;
    padding:176px 0 84px;
    color:#fff;
    background-color:var(--color-dark);
    background-image:linear-gradient(180deg,rgba(10,24,17,.52) 0%,rgba(12,34,25,.9) 100%),url('/assets/images/backpic/back-2.webp');
    background-size:cover;
    background-position:center 20%;
    overflow:hidden;
  }
  .article-hero::after{
    content:"";
    position:absolute;
    right:-12%;
    bottom:-46%;
    width:520px;
    height:520px;
    border-radius:50%;
    background:radial-gradient(circle,rgba(232,85,47,.26),rgba(232,85,47,0) 68%);
    pointer-events:none;
  }
  .article-hero .container{position:relative;z-index:2;}
  .breadcrumb{
    display:flex;
    align-items:center;
    flex-wrap:wrap;
    gap:10px;
    font-size:.875rem;
    color:rgba(255,255,255,.64);
  }
  .breadcrumb a{
    color:rgba(255,255,255,.82);
    text-decoration:none;
    transition:color .2s ease,background .2s ease;
    padding:2px 4px;
    border-radius:4px;
  }
  .breadcrumb a:hover{color:#fff;background:rgba(255,255,255,.12);}
  .breadcrumb-sep{opacity:.54;font-size:.8rem;}
  .breadcrumb-current{
    display:inline-block;
    max-width:34ch;
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    vertical-align:bottom;
    color:rgba(255,255,255,.88);
  }
  .hero-cat-chip{
    display:inline-flex;
    align-items:center;
    gap:.5em;
    margin:26px 0 2px;
    padding:.3rem 1rem;
    font-size:.82rem;
    font-weight:600;
    border-radius:999px;
    color:#fff;
    background:rgba(232,85,47,.88);
    border:1px solid rgba(255,255,255,.24);
    box-shadow:0 6px 18px rgba(0,0,0,.14);
  }
  .hero-cat-chip::before{
    content:"";
    width:7px;height:7px;
    border-radius:50%;
    background:#fff;
    margin-right:2px;
  }
  .article-hero h1{
    max-width:16em;
    margin:16px 0 14px;
    color:#fff;
    font-size:clamp(2rem,4.6vw,3.3rem);
    line-height:1.24;
    letter-spacing:-.02em;
  }
  .article-hero-meta{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:18px;
    color:rgba(255,255,255,.7);
    font-size:.92rem;
  }
  .article-hero-meta span{
    display:inline-flex;
    align-items:center;
    gap:6px;
  }
  .article-hero-meta i{
    font-style:normal;
    color:rgba(255,255,255,.9);
    background:rgba(255,255,255,.12);
    width:26px;height:26px;
    border-radius:8px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    font-size:.8rem;
  }
  .article-detail-main{
    padding:64px 0 76px;
    background:var(--color-bg);
  }
  .article-body-card{
    max-width:900px;
    margin:0 auto;
    background:var(--color-surface);
    border:1px solid var(--color-border);
    border-radius:26px;
    padding:clamp(24px,4.6vw,56px);
    box-shadow:var(--shadow-card);
  }
  .article-body{
    font-size:1.0625rem;
    line-height:1.9;
    color:#323C36;
    overflow-wrap:break-word;
  }
  .article-body p{
    margin:0 0 1.5em;
    line-height:1.9;
  }
  .article-body h2{
    margin:2.3em 0 .9em;
    padding-left:.55em;
    border-left:4px solid var(--color-primary);
    font-size:1.6rem;
    line-height:1.4;
  }
  .article-body h3{
    margin:2em 0 .7em;
    font-size:1.3rem;
    padding-left:.35em;
    border-left:3px solid var(--color-accent);
  }
  .article-body a{
    color:var(--color-primary-dark);
    text-decoration:underline;
    text-underline-offset:3px;
    text-decoration-color:rgba(20,122,92,.35);
  }
  .article-body ul{
    margin:0 0 1.5em;
    padding-left:1.25em;
    list-style:disc;
  }
  .article-body ul li{
    margin-bottom:.48em;
    padding-left:.35em;
  }
  .article-body ol{
    margin:0 0 1.5em;
    padding-left:1.35em;
    list-style:decimal;
  }
  .article-body ol li{margin-bottom:.48em;}
  .article-body blockquote{
    margin:1.8em 0;
    border-left:4px solid var(--color-primary);
    background:#F2F6F3;
    padding:1.2rem 1.6rem;
    border-radius:0 14px 14px 0;
    color:#39463E;
  }
  .article-body blockquote p:last-child{margin-bottom:0;}
  .article-body img{
    width:100%;
    height:auto;
    margin:1.8em auto;
    border-radius:14px;
    box-shadow:0 12px 36px rgba(20,35,29,.09);
  }
  .article-body table{
    width:100%;
    margin:1.6em 0 2em;
    border-collapse:collapse;
    font-size:.95rem;
  }
  .article-body th,.article-body td{
    border:1px solid var(--color-border);
    padding:.72rem .9rem;
    text-align:left;
    vertical-align:top;
  }
  .article-body thead th{
    background:#EEF4F0;
    color:var(--color-ink);
    font-weight:700;
  }
  .article-toolbar{
    margin-top:42px;
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:10px;
    padding-top:24px;
    border-top:1px solid var(--color-border);
  }
  .post-tag{
    display:inline-flex;
    align-items:center;
    gap:.35em;
    font-size:.82rem;
    font-weight:600;
    color:var(--color-primary-dark);
    background:var(--color-primary-light);
    border:1px solid rgba(20,122,92,.1);
    border-radius:999px;
    padding:.26em .95em;
  }
  .post-tag::before{
    content:"#";
    font-weight:800;
    color:var(--color-accent);
  }
  .article-pager{
    display:flex;
    align-items:stretch;
    gap:14px;
    margin-top:26px;
  }
  .pager-card{
    flex:1;
    min-width:0;
    display:flex;
    flex-direction:column;
    gap:5px;
    padding:16px 18px;
    border:1px solid var(--color-border);
    border-radius:14px;
    background:#FBFBF8;
    font-size:.9rem;
    font-weight:700;
    color:var(--color-ink);
    transition:background .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .pager-card small{
    font-weight:500;
    color:var(--color-body);
    font-size:.8rem;
  }
  .pager-card:hover{
    color:var(--color-primary-dark);
    background:#fff;
    border-color:rgba(20,122,92,.3);
    transform:translateY(-2px);
    box-shadow:0 10px 24px rgba(20,35,29,.07);
  }
  .pager-next{
    text-align:right;
    align-items:flex-end;
  }
  .related-section{
    background:linear-gradient(180deg,#EDF2ED 0%,#F7F6F2 100%);
    padding:76px 0 84px;
  }
  .section-kicker{
    display:inline-block;
    font-size:.83rem;
    font-weight:700;
    letter-spacing:.12em;
    text-transform:uppercase;
    color:var(--color-accent);
    margin-bottom:8px;
  }
  .related-section h2{
    margin-bottom:38px;
    font-size:clamp(1.6rem,3vw,2.2rem);
  }
  .related-row{
    max-width:100%;
  }
  .related-row .columns{
    padding:0 12px;
    display:flex;
    margin-bottom:24px;
  }
  .rel-card{
    width:100%;
    display:flex;
    flex-direction:column;
    background:#fff;
    border:1px solid var(--color-border);
    border-radius:18px;
    overflow:hidden;
    color:var(--color-ink);
    box-shadow:var(--shadow-soft);
    transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  }
  .rel-card:hover{
    transform:translateY(-4px);
    box-shadow:0 16px 36px rgba(20,35,29,.12);
    border-color:rgba(20,122,92,.3);
    color:var(--color-ink);
  }
  .rel-card img{
    width:100%;
    aspect-ratio:16/9;
    object-fit:cover;
  }
  .rel-card-body{
    flex:1;
    display:flex;
    flex-direction:column;
    min-height:168px;
    padding:20px 20px 24px;
  }
  .rel-card-body h3{
    font-size:1.08rem;
    line-height:1.5;
    margin-bottom:8px;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .rel-card-body p{
    color:var(--color-body);
    font-size:.9rem;
    line-height:1.7;
    margin-bottom:14px;
    display:-webkit-box;
    -webkit-line-clamp:3;
    -webkit-box-orient:vertical;
    overflow:hidden;
  }
  .rel-more{
    margin-top:auto;
    color:var(--color-primary);
    font-weight:700;
    font-size:.87rem;
    display:inline-flex;
    align-items:center;
    gap:.45em;
  }
  .rel-more::after{
    content:"";
    width:7px;height:7px;
    border-top:2px solid currentColor;
    border-right:2px solid currentColor;
    transform:rotate(45deg);
    margin-left:auto;
  }
  .support-strip{
    padding:70px 0;
    color:#fff;
    background-color:var(--color-dark);
    background-image:linear-gradient(120deg,rgba(14,90,68,.92),rgba(20,35,29,.92)),url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
  }
  .support-strip .support-inner{
    max-width:1100px;
    margin:0 auto;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px;
    flex-wrap:wrap;
  }
  .support-strip h2{
    color:#fff;
    font-size:clamp(1.4rem,2.6vw,2rem);
    margin-bottom:7px;
  }
  .support-strip p{
    max-width:640px;
    color:rgba(255,255,255,.72);
    font-size:.96rem;
    margin:0;
  }
  .support-actions{
    display:flex;
    gap:12px;
    flex-wrap:wrap;
  }
  .btt{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    min-height:46px;
    border-radius:12px;
    padding:.7rem 1.7rem;
    font-weight:700;
    font-size:.95rem;
    line-height:1;
    cursor:pointer;
    border:1px solid transparent;
    transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
    text-decoration:none;
    white-space:nowrap;
  }
  .btt-primary{
    background:var(--color-accent);
    color:#fff;
    box-shadow:0 8px 22px rgba(232,85,47,.22);
  }
  .btt-primary:hover{
    background:var(--color-accent-dark);
    color:#fff;
    box-shadow:0 10px 30px rgba(232,85,47,.34);
    transform:translateY(-2px);
  }
  .btt-primary:active{transform:scale(.98);}
  .btt-ghost-light{
    border-color:rgba(255,255,255,.55);
    color:#fff;
    background:rgba(255,255,255,.06);
  }
  .btt-ghost-light:hover{
    border-color:#fff;
    color:#fff;
    background:rgba(255,255,255,.15);
  }
  .btt-ghost-dark{
    border-color:rgba(20,35,29,.2);
    color:var(--color-primary-dark);
    background:var(--color-primary-light);
  }
  .btt-ghost-dark:hover{
    background:rgba(20,122,92,.14);
    color:var(--color-primary-dark);
  }
  .missing-main{
    position:relative;
    min-height:100vh;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:150px 22px 80px;
    background-color:var(--color-dark);
    background-image:linear-gradient(180deg,rgba(10,24,17,.72),rgba(13,33,25,.9)),url('/assets/images/backpic/back-3.png');
    background-size:cover;
    background-position:center;
    color:#fff;
    text-align:center;
  }
  .missing-card{
    max-width:540px;
    margin:0 auto;
    background:rgba(255,255,255,.08);
    border:1px solid rgba(255,255,255,.16);
    backdrop-filter:blur(10px);
    -webkit-backdrop-filter:blur(10px);
    border-radius:22px;
    padding:48px 42px;
    box-shadow:0 24px 60px rgba(0,0,0,.24);
  }
  .missing-card h1{
    color:#fff;
    font-size:2rem;
    margin-bottom:10px;
  }
  .missing-card p{
    color:rgba(255,255,255,.72);
    margin-bottom:26px;
  }
  .site-footer{
    background:var(--color-dark);
    color:rgba(255,255,255,.68);
    padding-top:68px;
  }
  .site-footer .container{
    max-width:1200px;
  }
  .footer-grid{
    display:grid;
    grid-template-columns:1.6fr .9fr .9fr 1fr;
    gap:40px;
  }
  .footer-brand .brand-logo{
    color:#fff;
    font-size:1.2rem;
    margin-bottom:16px;
  }
  .footer-brand .brand-logo .logo-mark{
    color:#fff;
    background:rgba(255,255,255,.14);
    border-color:rgba(255,255,255,.2);
  }
  .footer-brand p{
    font-size:.92rem;
    max-width:400px;
    color:rgba(255,255,255,.62);
  }
  .footer-col h5{
    color:#fff;
    font-size:.96rem;
    font-weight:800;
    margin-bottom:17px;
  }
  .footer-col ul li{
    margin-bottom:10px;
    line-height:1.5;
  }
  .footer-col a{
    color:rgba(255,255,255,.65);
    font-size:.9rem;
    text-decoration:none;
    transition:color .2s ease,padding-left .2s ease;
    display:inline-block;
  }
  .footer-col a:hover{
    color:#fff;
    padding-left:4px;
  }
  .footer-contact li{
    display:flex;
    align-items:flex-start;
    gap:9px;
    font-size:.9rem;
    color:rgba(255,255,255,.65);
  }
  .footer-contact i{
    font-style:normal;
    color:var(--color-accent);
  }
  .footer-bottom{
    margin-top:54px;
    border-top:1px solid rgba(255,255,255,.1);
    padding:18px 0;
  }
  .footer-bottom .container{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:14px;
    flex-wrap:wrap;
    font-size:.84rem;
  }
  .footer-bottom-links{
    display:flex;
    gap:20px;
  }
  .footer-bottom-links a{
    color:rgba(255,255,255,.56);
    text-decoration:none;
    transition:color .2s ease;
  }
  .footer-bottom-links a:hover{color:#fff;}
  @media(max-width:1024px){
    .footer-grid{grid-template-columns:1fr 1fr;gap:30px;}
    .main-nav{position:absolute;top:78px;left:0;right:0;display:none;padding:16px 22px 20px;background:rgba(255,255,255,.97);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);box-shadow:0 18px 40px rgba(20,35,29,.14);border-radius:0 0 18px 18px;}
    .site-header.nav-open .main-nav{display:block;}
    .main-nav ul{flex-direction:column;align-items:stretch;gap:2px;}
    .main-nav a,.site-header.is-scrolled .main-nav a,.site-header.nav-open .main-nav a{display:block;padding:.72rem 1rem;color:var(--color-ink);}
    .main-nav a:hover,.site-header.is-scrolled .main-nav a:hover{color:var(--color-primary-dark);background:var(--color-primary-light);}
    .nav-toggle{display:flex;}
    .breadcrumb-current{max-width:20ch;}
  }
  @media(max-width:768px){
    .container{padding-left:16px;padding-right:16px;}
    .site-header{height:68px;}
    .brand-logo{font-size:1rem;}
    .main-nav{top:68px;}
    .article-hero{padding:142px 0 58px;}
    .article-hero h1{font-size:2rem;margin-top:13px;}
    .article-detail-main{padding:30px 0 52px;}
    .article-body-card{padding:24px 20px;border-radius:18px;}
    .article-body{font-size:1rem;}
    .article-body h2{font-size:1.34rem;}
    .article-body h3{font-size:1.18rem;}
    .article-pager{flex-direction:column;}
    .support-strip{padding:48px 0;}
    .support-inner{flex-direction:column;text-align:center;}
    .support-actions{justify-content:center;}
    .footer-bottom .container{flex-direction:column;text-align:center;justify-content:center;}
    .footer-bottom-links{justify-content:center;flex-wrap:wrap;gap:14px;}
    .footer-grid{grid-template-columns:1fr;gap:28px;}
    .related-section{padding:54px 0 64px;}
    .related-row .columns{padding:0 5px;margin-bottom:14px;}
  }
  @media(max-width:540px){
    .footer-grid{grid-template-columns:1fr;}
    .article-body-card{padding:22px 16px;}
    .breadcrumb{font-size:.78rem;}
    .breadcrumb-current{max-width:12ch;}
    .btt{width:100%;}
    .support-actions{width:100%;}
    .article-hero-meta{gap:10px;font-size:.85rem;}
    .article-hero-meta span{display:flex;}
  }

/* roulang page: category2 */
:root {
    --color-primary: #1F7A5C;
    --color-primary-dark: #14603F;
    --color-primary-light: #DFEDE8;
    --color-accent: #E8552D;
    --color-accent-dark: #C94623;
    --color-dark: #14231D;
    --color-text: #222B26;
    --color-body: #5B6660;
    --color-bg: #F7F5F0;
    --color-surface: #FFFFFF;
    --color-border: #E7E7E1;
    --shadow-card: 0 2px 10px rgba(22, 32, 27, .04);
    --shadow-lift: 0 18px 38px rgba(25, 38, 32, .10);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --section-space: 92px;
    --header-h: 76px;
    --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Source Han Sans SC", sans-serif;
    --font-num: "Roboto", "Helvetica Neue", Arial, sans-serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    margin: 0;
    font-family: var(--font-main);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
  }

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

  a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color .2s ease;
  }

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

  ul,
  ol {
    margin: 0;
    padding: 0;
    list-style: none;
  }

  h1,
  h2,
  h3,
  h4,
  h5,
  p {
    margin: 0 0 .8em;
  }

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

  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    padding: .8rem 1.9rem;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all .22s ease;
    line-height: 1.5;
    font-size: 1rem;
  }

  .btn:focus-visible,
  a:focus-visible,
  button:focus-visible,
  summary:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 3px;
  }

  .btn-accent {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
  }

  .btn-accent:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: #fff;
    transform: translateY(-2px);
  }

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

  .btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    color: #fff;
    transform: translateY(-2px);
  }

  .btn-outline-light {
    background: transparent;
    border-color: rgba(255, 255, 255, .72);
    color: #fff;
  }

  .btn-outline-light:hover {
    background: rgba(255, 255, 255, .12);
    border-color: #fff;
    color: #fff;
  }

  .btn-lg {
    padding: .95rem 2.5rem;
    font-size: 1.05rem;
  }

  .btn:active {
    transform: scale(.98);
  }

  .section {
    padding: var(--section-space) 0;
  }

  .section-bg-soft {
    background: #FDFCFA;
  }

  .section-bg-gray {
    background: #F1EFE9;
  }

  .section-head {
    max-width: 720px;
    margin-bottom: 48px;
  }

  .section-head.is-center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
  }

  .section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    font-weight: 700;
    font-size: .875rem;
    letter-spacing: .08em;
    margin-bottom: 12px;
    padding: 4px 14px;
    background: var(--color-primary-light);
    border-radius: 999px;
  }

  .section-title {
    font-size: clamp(1.75rem, 3vw, 2.55rem);
    line-height: 1.3;
    font-weight: 700;
    letter-spacing: -.01em;
  }

  .section-title strong {
    color: var(--color-primary);
  }

  .section-desc {
    color: var(--color-body);
    font-size: 1.0625rem;
    margin-top: 16px;
  }

  .text-lead {
    font-size: 1.0625rem;
    color: var(--color-body);
  }

  .img-frame {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-primary-light);
  }

  .img-frame img {
    width: 100%;
    height: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
  }

  /* ===== Header ===== */
  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 80;
    height: var(--header-h);
    display: flex;
    align-items: center;
    transition: background .32s ease, box-shadow .32s ease, border-color .32s ease;
    background: transparent;
    border-bottom: 1px solid rgba(255, 255, 255, .18);
  }

  .site-header.is-scrolled {
    background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 4px 24px rgba(20, 35, 29, .08);
    border-bottom-color: rgba(20, 35, 29, .06);
  }

  .header-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
  }

  .brand-logo {
    display: inline-flex;
    align-items: baseline;
    gap: 2px;
    font-size: 1.28rem;
    font-weight: 400;
    text-decoration: none;
    color: rgba(255, 255, 255, .96);
    transition: color .3s ease;
    white-space: nowrap;
  }

  .brand-logo .logo-mark {
    font-weight: 800;
    color: var(--color-primary-light);
  }

  .site-header:not(.is-scrolled) .brand-logo:hover {
    color: #fff;
  }

  .site-header.is-scrolled .brand-logo {
    color: var(--color-text);
  }

  .site-header.is-scrolled .brand-logo .logo-mark {
    color: var(--color-primary);
  }

  .main-nav {
    display: flex;
    align-items: center;
  }

  .main-nav ul {
    display: flex;
    align-items: center;
    gap: 4px;
  }

  .main-nav a {
    position: relative;
    display: inline-flex;
    padding: .5rem .85rem;
    font-weight: 600;
    font-size: .9375rem;
    color: rgba(255, 255, 255, .92);
    border-radius: 999px;
    transition: color .25s ease, background .25s ease;
  }

  .main-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: 2px;
    width: 0;
    height: 2px;
    border-radius: 2px;
    background: var(--color-accent);
    transform: translateX(-50%);
    transition: width .25s ease;
  }

  .main-nav a:hover {
    color: #fff;
  }

  .main-nav a.active {
    background: rgba(255, 255, 255, .14);
    color: #fff;
  }

  .main-nav a.active::after {
    width: 16px;
  }

  .site-header.is-scrolled .main-nav a {
    color: var(--color-text);
  }

  .site-header.is-scrolled .main-nav a:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
  }

  .site-header.is-scrolled .main-nav a.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
  }

  .header-cta {
    flex: 0 0 auto;
    font-size: .9375rem;
    padding: .55rem 1.4rem;
  }

  .site-header:not(.is-scrolled) .header-cta {
    background: transparent;
    border-color: rgba(255, 255, 255, .68);
    color: #fff;
  }

  .site-header:not(.is-scrolled) .header-cta:hover {
    background: rgba(255, 255, 255, .12);
    border-color: #fff;
    transform: none;
  }

  .site-header.is-scrolled .header-cta {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: #fff;
  }

  .nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border: 1px solid rgba(255, 255, 255, .28);
    background: rgba(255, 255, 255, .06);
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
  }

  .site-header.is-scrolled .nav-toggle {
    border-color: var(--color-border);
    background: var(--color-surface);
  }

  .nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    border-radius: 2px;
    background: #fff;
    transition: opacity .2s ease;
  }

  .site-header.is-scrolled .nav-toggle span {
    background: var(--color-text);
  }

  /* ===== category hero ===== */
  .cat-hero {
    position: relative;
    z-index: 2;
    padding: calc(var(--header-h) + 72px) 0 84px;
    background-color: #0F201A;
    background-image: linear-gradient(90deg, rgba(15, 28, 22, .82) 0%, rgba(15, 28, 22, .55) 100%),
      url("/assets/images/backpic/back-2.webp");
    background-size: cover;
    background-position: center 35%;
    color: #fff;
    overflow: hidden;
  }

  .cat-hero::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -2px;
    height: 60px;
    background: linear-gradient(180deg, transparent, var(--color-bg));
    z-index: 1;
  }

  .cat-hero-inner {
    position: relative;
    z-index: 2;
    max-width: 920px;
  }

  .cat-hero .eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-weight: 800;
    letter-spacing: .14em;
    font-size: .8125rem;
    text-transform: uppercase;
    color: #EFF7F2;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .18);
    padding: 6px 16px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
    margin-bottom: 24px;
  }

  .cat-hero h1 {
    font-size: clamp(2rem, 4.6vw, 3.2rem);
    line-height: 1.2;
    font-weight: 800;
    margin-bottom: 18px;
    letter-spacing: -.01em;
    text-shadow: 0 2px 14px rgba(0, 0, 0, .26);
  }

  .cat-hero h1 .deco-line {
    color: #F5A55B;
  }

  .cat-hero p {
    font-size: 1.125rem;
    color: rgba(255, 255, 255, .92);
    max-width: 680px;
    margin-bottom: 28px;
    line-height: 1.8;
  }

  .hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    align-items: center;
  }

  .hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 18px;
    margin-top: 32px;
    font-size: .875rem;
    color: rgba(255, 255, 255, .8);
  }

  .hero-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
  }

  .hero-meta i {
    color: #F5A55B;
  }

  .float-card {
    position: absolute;
    right: 4%;
    bottom: 80px;
    z-index: 2;
    width: 220px;
    background: rgba(255, 255, 255, .12);
    backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, .22);
    border-radius: 18px;
    padding: 22px;
    color: #fff;
    display: none;
  }

  .float-card strong {
    display: block;
    font-size: 1.6rem;
    line-height: 1.3;
    font-family: var(--font-num);
  }

  .float-card span {
    font-size: .8125rem;
    color: rgba(255, 255, 255, .84);
  }

  @media (min-width: 1025px) {
    .float-card {
      display: block;
    }
  }

  /* ===== split media block ===== */
  .split-block {
    padding: 72px 0;
  }

  .split-block + .split-block {
    padding-top: 0;
  }

  .split-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 58px;
    align-items: center;
  }

  .split-block--reverse .split-grid .split-media {
    order: 2;
  }

  .split-block--reverse .split-grid .split-content {
    order: 1;
  }

  .split-content .content-title {
    font-size: 1.75rem;
    line-height: 1.35;
    font-weight: 700;
    margin-bottom: 8px;
  }

  .split-content .content-sub {
    color: var(--color-primary);
    font-weight: 700;
    font-size: .9375rem;
    margin-bottom: 14px;
    display: block;
  }

  .split-content p {
    color: var(--color-body);
  }

  .split-list {
    margin-top: 20px;
  }

  .split-list li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 9px 0;
    border-bottom: 1px dashed #E2E5DF;
    color: var(--color-body);
    font-size: .968rem;
  }

  .split-list li:last-child {
    border-bottom: 0;
  }

  .split-list i {
    display: inline-flex;
    width: 24px;
    height: 24px;
    flex: 0 0 24px;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: .75rem;
    margin-top: 2px;
  }

  .media-shadow-box {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-lift);
    background: #F0F1EA;
  }

  .media-shadow-box img {
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
  }

  .tag-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
  }

  .tag-chip {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: .8125rem;
    font-weight: 600;
  }

  /* ===== feature grid ===== */
  .feature-list-wrap {
    padding: 90px 0;
  }

  .feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    align-items: start;
  }

  .feature-card {
    background: var(--color-surface);
    border-radius: 18px;
    padding: 30px 26px 28px;
    box-shadow: var(--shadow-card);
    position: relative;
    transition: transform .28s ease, box-shadow .28s ease;
    border: 1px solid rgba(0,0,0,.02);
  }

  .feature-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 24px;
    right: 24px;
    height: 4px;
    border-radius: 0 0 6px 6px;
    background: transparent;
    transition: background .3s ease;
  }

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

  .feature-card:hover::before {
    background: var(--color-accent);
  }

  .feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 14px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-size: 1.4rem;
    margin-bottom: 22px;
  }

  .feature-card h3 {
    font-size: 1.16rem;
    margin-bottom: 10px;
    font-weight: 700;
  }

  .feature-card p {
    font-size: .9375rem;
    color: var(--color-body);
    margin-bottom: 0;
  }

  .feature-card p + .tag-chip {
    margin-top: 14px;
  }

  @media (max-width: 1023px) {
    .feature-grid {
      grid-template-columns: repeat(2, 1fr);
    }

    .split-grid {
      grid-template-columns: 1fr;
      gap: 38px;
    }

    .split-block--reverse .split-grid .split-media {
      order: 1;
    }

    .split-block--reverse .split-grid .split-content {
      order: 2;
    }
  }

  /* ===== dark steps section ===== */
  .steps-section {
    background: linear-gradient(135deg, #19372B, #10211A);
    color: #fff;
    padding: 92px 0;
    position: relative;
    overflow: hidden;
  }

  .steps-section .section-head.is-center .section-eyebrow {
    background: rgba(255, 255, 255, .1);
    color: #F5F9F6;
  }

  .steps-section .section-title {
    color: #fff;
  }

  .steps-section .section-desc {
    color: rgba(255, 255, 255, .72);
  }

  .steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 22px;
  }

  .step-card {
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 18px;
    padding: 34px 28px;
    position: relative;
    backdrop-filter: blur(8px);
    transition: background .3s ease, border .3s ease;
  }

  .step-card:hover {
    background: rgba(255, 255, 255, .1);
    border-color: rgba(255, 255, 255, .16);
  }

  .step-num {
    font-family: var(--font-num);
    font-size: 2.4rem;
    font-weight: 800;
    line-height: 1;
    color: rgba(255, 255, 255, .18);
    position: absolute;
    right: 24px;
    top: 18px;
    transition: color .3s ease;
  }

  .step-card:hover .step-num {
    color: var(--color-accent);
  }

  .step-index {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--color-accent);
    color: #fff;
    font-weight: 700;
    font-size: .875rem;
    margin-bottom: 32px;
  }

  .step-card h3 {
    font-size: 1.18rem;
    margin-bottom: 10px;
  }

  .step-card p {
    font-size: .9375rem;
    color: rgba(255, 255, 255, .8);
  }

  @media (max-width: 767px) {
    .steps-grid {
      grid-template-columns: 1fr;
    }
  }

  /* ===== compatibility section ===== */
  .browser-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 20px;
  }

  .browser-item {
    background: #fff;
    border: 1px solid var(--color-border);
    border-radius: 14px;
    padding: 20px;
    text-align: center;
  }

  .browser-item i {
    font-size: 2rem;
    color: var(--color-primary);
    margin-bottom: 8px;
    display: block;
  }

  .browser-item span {
    font-weight: 700;
    font-size: .9rem;
  }

  .browser-item small {
    display: block;
    color: var(--color-body);
    font-size: .75rem;
    margin-top: 2px;
  }

  @media (max-width: 767px) {
    .browser-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  .note-box {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    border-radius: 14px;
    padding: 18px 22px;
    margin-top: 24px;
    font-size: .9375rem;
    display: flex;
    gap: 10px;
    align-items: flex-start;
  }

  .note-box i {
    margin-top: 3px;
  }

  /* ===== FAQ ===== */
  .faq-section {
    padding: 90px 0;
  }

  .faq-wrap {
    max-width: 840px;
    margin: 0 auto;
  }

  .faq-item {
    background: #fff;
    border: 1px solid #E7E7E1;
    border-radius: 14px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow .24s ease;
  }

  .faq-item:hover {
    box-shadow: var(--shadow-card);
  }

  .faq-item summary {
    list-style: none;
    cursor: pointer;
    padding: 17px 22px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 1rem;
  }

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

  .faq-item summary::after {
    content: "\f078";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    transition: transform .3s ease;
    color: var(--color-primary);
    font-size: .85rem;
  }

  .faq-item[open] summary {
    background: var(--color-primary-light);
  }

  .faq-item[open] summary::after {
    transform: rotate(180deg);
  }

  .faq-answer {
    padding: 4px 22px 22px;
    border-top: 1px solid #E7E7E1;
    font-size: .95rem;
    color: var(--color-body);
    line-height: 1.8;
  }

  .faq-item[open] summary + .faq-answer {
    padding-top: 16px;
  }

  /* ===== contact card / cta ===== */
  .contact-strip {
    background: #12261E;
    border-radius: 24px;
    color: #fff;
    padding: 48px 50px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
    flex-wrap: wrap;
    background-image: linear-gradient(100deg, rgba(226, 84, 42, .22), transparent 55%),
      url("/assets/images/backpic/back-3.png");
    background-size: cover;
    background-position: center 40%;
    position: relative;
    overflow: hidden;
  }

  .contact-strip::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(15, 35, 27, .9), rgba(15, 35, 27, .55));
    z-index: 0;
  }

  .contact-copy,
  .contact-action {
    position: relative;
    z-index: 2;
  }

  .contact-copy h2 {
    font-size: 1.6rem;
    margin-bottom: 8px;
  }

  .contact-copy p {
    color: rgba(255, 255, 255, .8);
    max-width: 540px;
    margin-bottom: 0;
  }

  .contact-action {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
  }

  /* ===== footer ===== */
  .site-footer {
    background: #14231D;
    color: rgba(255, 255, 255, .78);
    font-size: .9375rem;
  }

  .site-footer .grid-container {
    max-width: 1200px;
  }

  .site-footer a {
    color: rgba(255, 255, 255, .76);
  }

  .site-footer a:hover {
    color: #fff;
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 2.2fr 1fr 1fr 1.2fr;
    gap: 44px;
    padding: 60px 0 50px;
  }

  .footer-brand .brand-logo {
    color: #fff;
    margin-bottom: 12px;
    font-size: 1.2rem;
  }

  .footer-brand .brand-logo .logo-mark {
    color: #7FD1A7;
  }

  .footer-brand p {
    color: rgba(255, 255, 255, .66);
    max-width: 300px;
    font-size: .875rem;
  }

  .footer-col h5 {
    color: #fff;
    font-size: 1rem;
    margin-bottom: 16px;
  }

  .footer-col ul li {
    margin-bottom: 9px;
  }

  .footer-col ul li a {
    font-size: .875rem;
  }

  .footer-contact li {
    font-size: .875rem;
    display: flex;
    align-items: center;
    gap: 8px;
  }

  .footer-contact li i {
    color: #79C69B;
    font-style: normal;
  }

  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding: 16px 0;
  }

  .footer-bottom .grid-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    font-size: .8125rem;
  }

  .footer-bottom-links {
    display: flex;
    gap: 12px;
  }

  .footer-bottom-links {
    color: rgba(255, 255, 255, .6);
  }

  .footer-bottom-links a {
    color: rgba(255, 255, 255, .6);
  }

  /* ===== responsive ===== */
  @media (max-width: 1023px) {
    .footer-grid {
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }

    .footer-grid .footer-brand {
      grid-column: 1 / -1;
    }
  }

  @media (max-width: 840px) {
    :root {
      --section-space: 60px;
    }

    .header-shell .main-nav {
      position: absolute;
      top: calc(var(--header-h) + 10px);
      left: 16px;
      right: 16px;
      z-index: 90;
      background: #fff;
      border-radius: 18px;
      padding: 12px;
      box-shadow: var(--shadow-lift);
      display: none;
      border: 1px solid #F0F1EA;
    }

    .header-shell .main-nav.open {
      display: block;
    }

    .main-nav ul {
      flex-direction: column;
      align-items: stretch;
      gap: 2px;
    }

    .main-nav a,
    .site-header.is-scrolled .main-nav a,
    .site-header:not(.is-scrolled) .main-nav a {
      color: var(--color-text);
      border-radius: 10px;
      padding: 12px 14px;
    }

    .main-nav a::after {
      display: none;
    }

    .main-nav a.active,
    .site-header.is-scrolled .main-nav a.active {
      background: var(--color-primary-light);
      color: var(--color-primary);
    }

    .nav-toggle {
      display: flex;
    }

    .header-cta {
      display: none;
    }

    body.scrolled {
      padding-bottom: 0;
    }
  }

  @media (max-width: 639px) {
    .container,
    .grid-container {
      padding-left: 18px;
      padding-right: 18px;
    }

    .brand-logo {
      font-size: 1.08rem;
    }

    .brand-logo span:last-child {
      display: none;
    }

    .btn-lg {
      padding: .85rem 1.6rem;
      font-size: .98rem;
    }

    .cat-hero {
      padding: calc(var(--header-h) + 46px) 0 62px;
    }

    .cat-hero p {
      font-size: 1rem;
    }

    .hero-actions {
      flex-direction: column;
      align-items: stretch;
    }

    .hero-actions .btn {
      width: 100%;
    }

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

    .section-head {
      margin-bottom: 30px;
    }

    .contact-strip {
      padding: 28px 24px;
      border-radius: 18px;
      flex-direction: column;
      align-items: flex-start;
    }

    .step-card {
      padding: 26px 22px;
    }

    .faq-item summary {
      padding: 14px 16px;
      font-size: .94rem;
    }

    .faq-answer {
      padding: 2px 16px 16px;
    }

    .footer-grid {
      grid-template-columns: 1fr;
      padding-top: 46px;
    }

    .footer-brand p {
      max-width: 100%;
    }

    .footer-bottom .grid-container {
      justify-content: center;
      text-align: center;
    }
  }

/* roulang page: category3 */
:root {
      --color-primary: #176B52;
      --color-primary-dark: #10493A;
      --color-primary-light: #DFEDE8;
      --color-accent: #E8552D;
      --color-accent-dark: #C94623;
      --color-dark: #14231D;
      --color-text: #222B26;
      --color-body: #5B6660;
      --color-bg: #F8F7F3;
      --color-surface: #FFFFFF;
      --color-border: #E7E7E1;
      --color-muted: #89928B;
      --radius-sm: 10px;
      --radius-md: 16px;
      --radius-lg: 22px;
      --shadow-sm: 0 2px 10px rgba(24, 36, 31, 0.05);
      --shadow-md: 0 12px 30px rgba(24, 36, 31, 0.08);
      --shadow-lift: 0 20px 40px rgba(18, 42, 32, 0.12);
      --container-width: 1200px;
      --header-height: 78px;
      --transition-fast: 0.2s ease;
      --transition-mid: 0.35s ease;
    }

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

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--color-text);
      background-color: var(--color-bg);
      -webkit-font-smoothing: antialiased;
    }

    html,
    body {
      overflow-x: hidden;
    }

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

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

    ul,
    ol,
    li {
      list-style: none;
      margin: 0;
      padding: 0;
    }

    button,
    input {
      font-family: inherit;
    }

    h1,
    h2,
    h3,
    h4,
    h5 {
      font-weight: 700;
      line-height: 1.3;
      color: var(--color-text);
    }

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

    .grid-x,
    .row {
      max-width: var(--container-width);
    }

    .header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      height: var(--header-height);
      background: rgba(14, 32, 26, 0.3);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid rgba(255, 255, 255, 0.16);
      display: flex;
      align-items: center;
      transition: background 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    }

    .header .container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 1.22rem;
      line-height: 1.2;
      white-space: nowrap;
      color: #fff;
      font-weight: 500;
      transition: color 0.3s ease;
    }

    .brand-logo .logo-mark {
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    .brand-logo .logo-sub {
      font-weight: 400;
      opacity: 0.95;
    }

    .main-nav ul {
      display: flex;
      align-items: center;
      gap: 36px;
      margin: 0;
    }

    .main-nav a {
      color: rgba(255, 255, 255, 0.92);
      font-size: 0.95rem;
      padding: 8px 2px;
      position: relative;
      white-space: nowrap;
      font-weight: 500;
      letter-spacing: 0.02em;
    }

    .main-nav a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 2px;
      background: var(--color-accent);
      transition: width 0.3s ease;
    }

    .main-nav a:hover {
      color: #fff;
    }

    .main-nav a:hover::after,
    .main-nav a.active::after {
      width: 100%;
    }

    .main-nav a.active {
      color: #fff;
      font-weight: 700;
    }

    .menu-toggle {
      display: none;
      background: none;
      border: 1px solid rgba(255, 255, 255, 0.4);
      width: 44px;
      height: 44px;
      border-radius: var(--radius-sm);
      color: #fff;
      font-size: 1.1rem;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      transition: all 0.2s ease;
    }

    .menu-toggle:focus {
      outline: 2px solid var(--color-accent);
      outline-offset: 3px;
    }

    .header.is-scrolled {
      background: #fff;
      border-color: rgba(0, 0, 0, 0.04);
      box-shadow: 0 8px 30px rgba(15, 30, 23, 0.14);
    }

    .header.is-scrolled .brand-logo,
    .header.is-scrolled .main-nav a {
      color: #1C2A22;
    }

    .header.is-scrolled .main-nav a:hover,
    .header.is-scrolled .main-nav a.active {
      color: var(--color-primary);
    }

    .header.is-scrolled .menu-toggle {
      color: var(--color-primary);
      border-color: rgba(20, 40, 30, 0.3);
    }

    .hero {
      position: relative;
      min-height: 86vh;
      background-image: linear-gradient(86deg, rgba(13, 36, 29, 0.92) 0%, rgba(13, 36, 29, 0.72) 46%, rgba(17, 55, 41, 0.58) 100%), url('/assets/images/backpic/back-2.webp');
      background-repeat: no-repeat;
      background-position: center;
      background-size: cover;
      display: flex;
      align-items: center;
      color: #fff;
      padding: calc(var(--header-height) + 48px) 0 64px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.8fr);
      gap: 56px;
      align-items: center;
    }

    .hero-content {
      max-width: 640px;
    }

    .hero-eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 0.875rem;
      font-weight: 600;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: #FAD1BC;
      background: rgba(255, 255, 255, 0.09);
      border: 1px solid rgba(255, 255, 255, 0.22);
      padding: 8px 18px;
      border-radius: 100px;
      margin-bottom: 24px;
    }

    .hero h1 {
      color: #fff;
      font-size: clamp(2.1rem, 4.6vw, 3.6rem);
      line-height: 1.18;
      margin-bottom: 22px;
      letter-spacing: -0.01em;
    }

    .hero h1 .accent-text {
      color: #FFC9B4;
    }

    .hero-desc {
      font-size: 1.1rem;
      line-height: 1.8;
      color: rgba(255, 255, 255, 0.86);
      margin-bottom: 28px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 30px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 10px;
      border-radius: var(--radius-sm);
      font-weight: 700;
      padding: 1rem 2rem;
      border: 2px solid transparent;
      cursor: pointer;
      transition: all 0.2s ease;
      line-height: 1.2;
      font-size: 1rem;
    }

    .btn:active {
      transform: scale(0.98);
    }

    .btn:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 3px;
    }

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

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

    .btn-outline-light {
      background: transparent;
      border-color: rgba(255, 255, 255, 0.6);
      color: #fff;
    }

    .btn-outline-light:hover {
      background: rgba(255, 255, 255, 0.08);
      border-color: #fff;
    }

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

    .btn-primary-dark:hover {
      background: #0F563F;
      border-color: #0F563F;
      transform: translateY(-2px);
    }

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

    .btn-outline-primary:hover {
      background: rgba(23, 107, 82, 0.06);
      border-color: var(--color-primary-dark);
    }

    .hero-points {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      padding: 0;
    }

    .hero-points li {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.875rem;
      color: rgba(255, 255, 255, 0.82);
    }

    .hero-points i {
      color: #76D6B4;
      font-size: 0.8rem;
    }

    .hero-panel {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.18);
      border-radius: var(--radius-lg);
      backdrop-filter: blur(8px);
      -webkit-backdrop-filter: blur(8px);
      padding: 36px 28px;
    }

    .hero-panel .panel-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 24px;
    }

    .panel-title .icon-holder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.14);
      color: #FFCEBB;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.05rem;
    }

    .verify-list {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-bottom: 22px;
    }

    .verify-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      color: #F0F6F2;
      font-size: 0.92rem;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 12px;
      padding: 11px 14px;
    }

    .verify-list li i {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      flex: 0 0 24px;
      background: rgba(118, 214, 180, 0.2);
      color: #8BE3C1;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.72rem;
    }

    .panel-note {
      padding: 12px 14px;
      border-radius: 10px;
      background: rgba(232, 85, 45, 0.12);
      border-left: 3px solid #FF9A6B;
      color: #FFE5DB;
      font-size: 0.85rem;
      line-height: 1.6;
    }

    /* ===== 安全标签带 ===== */
    .safe-strip {
      background: #FFFFFF;
      border-bottom: 1px solid var(--color-border);
      padding: 20px 0;
    }

    .safe-strip-grid {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
    }

    .safe-strip-item {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .safe-strip-item i {
      width: 44px;
      height: 44px;
      flex: 0 0 44px;
      border-radius: 12px;
      background: var(--color-primary-light);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.05rem;
    }

    .safe-strip-item strong {
      display: block;
      font-size: 0.98rem;
      color: var(--color-text);
    }

    .safe-strip-item span {
      display: block;
      font-size: 0.78rem;
      color: var(--color-muted);
      line-height: 1.4;
    }

    /* ===== 通用 section ===== */
    .section {
      padding: 92px 0;
    }

    .section-bg-light {
      background: var(--color-bg);
    }

    .section-bg-white {
      background: #fff;
    }

    .section-bg-green {
      background-color: #F0F6F2;
    }

    .section-head {
      display: flex;
      flex-direction: column;
      align-items: center;
      text-align: center;
      margin-bottom: 48px;
      gap: 10px;
    }

    .section-head.align-left {
      align-items: flex-start;
      text-align: left;
    }

    .section-tag {
      color: var(--color-primary);
      background: var(--color-primary-light);
      border-radius: 100px;
      padding: 6px 16px;
      font-size: 0.8rem;
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      letter-spacing: 0.05em;
    }

    .section-tag i {
      font-size: 0.7rem;
      color: var(--color-accent);
    }

    .section-head h2 {
      font-size: clamp(1.8rem, 3.2vw, 2.5rem);
      letter-spacing: -0.01em;
      margin-bottom: 4px;
    }

    .section-lead {
      font-size: 1.02rem;
      color: var(--color-body);
      line-height: 1.8;
      max-width: 760px;
    }

    .section-head.align-left .section-lead {
      margin-left: 0;
    }

    /* ===== 双列图文 ===== */
    .split-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
    }

    .split-media {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      aspect-ratio: 4 / 3;
      background: #EDF1EC;
    }

    .split-media img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .split-media::after {
      content: "";
      position: absolute;
      inset: 0;
      border-radius: var(--radius-lg);
      border: 1px solid rgba(255, 255, 255, 0.3);
      pointer-events: none;
    }

    .split-text h3 {
      font-size: clamp(1.5rem, 2.6vw, 2.1rem);
      margin-bottom: 14px;
    }

    .split-text p {
      color: var(--color-body);
      line-height: 1.85;
      font-size: 1rem;
      margin-bottom: 20px;
    }

    .check-list {
      display: grid;
      gap: 14px;
      margin-top: 20px;
    }

    .check-list li {
      display: flex;
      gap: 12px;
      align-items: flex-start;
      color: var(--color-text);
      font-size: 0.96rem;
      font-weight: 500;
    }

    .check-list i {
      margin-top: 3px;
      flex: 0 0 22px;
      width: 22px;
      height: 22px;
      border-radius: 8px;
      background: var(--color-primary-light);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.7rem;
    }

    .order-no {
      font-size: 4rem;
      font-weight: 800;
      line-height: 1;
      color: rgba(23, 107, 82, 0.18);
      font-family: inherit;
      display: block;
      margin-bottom: 12px;
    }

    /* ===== 服务卡片 ===== */
    .feature-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .feature-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 32px 28px;
      box-shadow: var(--shadow-sm);
      border: 1px solid rgba(0, 0, 0, 0.03);
      transition: transform var(--transition-mid), box-shadow var(--transition-mid);
      position: relative;
      overflow: hidden;
    }

    .feature-card::before {
      content: "";
      position: absolute;
      left: 0;
      top: 0;
      height: 0;
      width: 4px;
      background: var(--color-accent);
      transition: height 0.3s ease;
    }

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

    .feature-card:hover::before {
      height: 100%;
    }

    .feature-icon {
      width: 58px;
      height: 58px;
      border-radius: 18px;
      display: flex;
      align-items: center;
      justify-content: center;
      background: var(--color-primary-light);
      color: var(--color-primary);
      font-size: 1.5rem;
      margin-bottom: 22px;
    }

    .feature-card h3 {
      font-size: 1.28rem;
      margin-bottom: 10px;
    }

    .feature-card p {
      color: var(--color-body);
      font-size: 0.94rem;
      line-height: 1.75;
      margin-bottom: 0;
    }

    .card-link-more {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-weight: 600;
      color: var(--color-primary);
      font-size: 0.9rem;
      margin-top: 18px;
      transition: gap 0.2s ease;
    }

    .card-link-more:hover {
      gap: 12px;
      color: var(--color-accent);
    }

    /* ===== 数据 / 保障区块 ===== */
    .assure-band {
      background: var(--color-dark);
      background-image: linear-gradient(120deg, rgba(20, 35, 29, 0.94), rgba(23, 65, 47, 0.86));
      color: #fff;
      padding: 70px 0;
    }

    .assure-head {
      text-align: center;
      max-width: 700px;
      margin: 0 auto 48px;
    }

    .assure-head h2 {
      color: #fff;
      margin-bottom: 14px;
      font-size: clamp(1.7rem, 3vw, 2.4rem);
    }

    .assure-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .assure-item {
      text-align: center;
      padding: 24px 16px;
      background: rgba(255, 255, 255, 0.06);
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .assure-item .num {
      font-size: 2.4rem;
      font-weight: 800;
      color: #86E5C2;
      line-height: 1;
      display: block;
      margin-bottom: 14px;
    }

    .assure-item .num small {
      font-size: 1rem;
      font-weight: 600;
      margin-left: 2px;
    }

    .assure-item p {
      color: rgba(255, 255, 255, 0.76);
      font-size: 0.92rem;
      margin-bottom: 6px;
    }

    .assure-note {
      text-align: center;
      color: rgba(255, 255, 255, 0.5);
      font-size: 0.8rem;
      margin-top: 18px;
    }

    /* ===== 流程模块 ===== */
    .steps-wrap {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .step-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: var(--shadow-sm);
      position: relative;
      border-top: 4px solid transparent;
      transition: border-color 0.3s ease, transform 0.3s ease;
    }

    .step-card:hover {
      transform: translateY(-4px);
      border-top-color: var(--color-primary);
    }

    .step-index {
      display: block;
      font-size: 0.85rem;
      font-weight: 800;
      letter-spacing: 0.12em;
      color: var(--color-accent);
      margin-bottom: 14px;
    }

    .step-card h3 {
      font-size: 1.15rem;
      margin-bottom: 10px;
    }

    .step-card p {
      color: var(--color-body);
      font-size: 0.9rem;
      line-height: 1.7;
      margin-bottom: 0;
    }

    /* ===== 内容推荐卡 ===== */
    .resource-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .resource-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(0, 0, 0, 0.04);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      transition: box-shadow 0.3s ease, transform 0.3s ease;
    }

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

    .resource-thumb {
      aspect-ratio: 16 / 10;
      background: #E9F0EB;
      overflow: hidden;
    }

    .resource-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .resource-card:hover .resource-thumb img {
      transform: scale(1.05);
    }

    .resource-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      flex: 1;
    }

    .resource-tag {
      color: var(--color-primary);
      font-size: 0.78rem;
      font-weight: 600;
      background: var(--color-primary-light);
      border-radius: 100px;
      padding: 4px 12px;
      align-self: flex-start;
    }

    .resource-body h3 {
      font-size: 1.1rem;
      line-height: 1.5;
    }

    .resource-body p {
      color: var(--color-muted);
      font-size: 0.88rem;
      line-height: 1.7;
    }

    .resource-more {
      margin-top: auto;
      color: var(--color-primary);
      font-weight: 600;
      font-size: 0.9rem;
    }

    .resource-more i {
      margin-left: 4px;
    }

    /* ===== FAQ 手风琴 ===== */
    .faq-wrap {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #fff;
      border-radius: var(--radius-md);
      border: 1px solid var(--color-border);
      margin-bottom: 12px;
      overflow: hidden;
      transition: border-color 0.25s ease, background 0.25s ease;
    }

    .faq-item summary {
      display: flex;
      align-items: center;
      gap: 14px;
      cursor: pointer;
      padding: 1.05rem 1.4rem;
      font-size: 1rem;
      font-weight: 600;
      color: var(--color-text);
      list-style: none;
    }

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

    .faq-item summary:hover {
      background: #FAFBFA;
    }

    .faq-item summary:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: -2px;
      border-radius: var(--radius-md);
    }

    .faq-item .faq-icon {
      margin-left: auto;
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--color-primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-primary);
      transition: transform 0.25s ease;
      flex: 0 0 32px;
      font-size: 0.9rem;
    }

    .faq-item[open] {
      background: #F4F9F6;
      border-color: rgba(23, 107, 82, 0.18);
    }

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

    .faq-item .faq-answer {
      padding: 0 1.4rem 1.3rem 1.4rem;
      border-top: 1px solid rgba(35, 60, 49, 0.08);
      margin-top: 4px;
      color: var(--color-body);
      font-size: 0.95rem;
      line-height: 1.8;
    }

    /* ===== CTA ===== */
    .cta-section {
      background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, #1D7D5A 100%);
      padding: 96px 0;
      position: relative;
      overflow: hidden;
    }

    .cta-section::after {
      content: '';
      position: absolute;
      right: -80px;
      top: -100px;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.04);
      z-index: 0;
    }

    .cta-inner {
      position: relative;
      z-index: 1;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 48px;
      flex-wrap: wrap;
    }

    .cta-left {
      max-width: 620px;
    }

    .cta-left h2 {
      color: #fff;
      font-size: clamp(1.8rem, 3vw, 2.4rem);
      margin-bottom: 16px;
    }

    .cta-left p {
      color: rgba(255, 255, 255, 0.82);
      font-size: 1.05rem;
      line-height: 1.8;
      margin-bottom: 0;
    }

    .cta-action {
      display: flex;
      flex-direction: column;
      gap: 14px;
      align-items: flex-start;
    }

    .cta-action .btn-outline-light {
      border-width: 1px;
    }

    .cta-note {
      color: rgba(255, 255, 255, 0.6);
      font-size: 0.84rem;
    }

    .cta-note a {
      color: #FFC9B4;
    }

    /* ===== 页脚 ===== */
    .site-footer {
      background: #14231C;
      color: rgba(255, 255, 255, 0.7);
      margin-top: 0;
    }

    .site-footer .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.9fr 0.9fr 1fr;
      gap: 48px;
      padding: 70px 0 44px;
    }

    .site-footer .brand-logo {
      color: #fff;
      font-size: 1.2rem;
      margin-bottom: 15px;
    }

    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.8;
      margin: 0 0 0;
      color: rgba(255, 255, 255, 0.6);
    }

    .site-footer h5 {
      color: #fff;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 22px;
      letter-spacing: 0.04em;
    }

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

    .footer-col a {
      color: rgba(255, 255, 255, 0.65);
      font-size: 0.92rem;
      transition: color 0.2s ease, padding-left 0.2s ease;
    }

    .footer-col a:hover {
      color: #fff;
      padding-left: 6px;
    }

    .footer-col li {
      display: flex;
      gap: 8px;
      font-size: 0.92rem;
      color: rgba(255, 255, 255, 0.65);
      line-height: 1.6;
    }

    .footer-col li i {
      color: var(--color-accent);
      font-style: normal;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 20px 0;
      color: rgba(255, 255, 255, 0.4);
      font-size: 0.85rem;
    }

    .footer-bottom .container {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      align-items: center;
    }

    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }

    .footer-bottom-links a {
      color: rgba(255, 255, 255, 0.5);
      font-size: 0.82rem;
    }

    .footer-bottom-links a:hover {
      color: #fff;
    }

    /* ===== 响应式定制 ===== */
    @media screen and (max-width: 1024px) {
      :root {
        --header-height: 70px;
      }

      .main-nav {
        display: none;
      }

      .main-nav.is-open {
        display: flex;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        padding: 20px 24px 26px;
        box-shadow: 0 20px 30px rgba(0, 0, 0, 0.12);
        border-radius: 0 0 16px 16px;
        flex-direction: column;
      }

      .main-nav.is-open ul {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
      }

      .main-nav.is-open a {
        color: var(--color-text);
        font-size: 1rem;
      }

      .main-nav.is-open a:hover,
      .main-nav.is-open a.active {
        color: var(--color-primary);
      }

      .header .menu-toggle {
        display: inline-flex;
      }

      .header.is-scrolled .main-nav.is-open a {
        color: var(--color-text);
      }

      .section {
        padding: 70px 0;
      }

      .split-grid {
        gap: 36px;
      }

      .feature-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .steps-wrap {
        grid-template-columns: repeat(2, 1fr);
      }

      .assure-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media screen and (max-width: 820px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }

      .hero-panel {
        max-width: 100%;
      }

      .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + 46px);
        padding-bottom: 56px;
      }

      .cta-inner {
        flex-direction: column;
        gap: 24px;
      }

      .cta-action {
        flex-direction: row;
      }

      .site-footer .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media screen and (max-width: 640px) {
      .container {
        padding: 0 20px;
      }

      .section {
        padding: 56px 0;
      }

      .hero {
        padding-top: calc(var(--header-height) + 30px);
      }

      .hero h1 {
        font-size: 2.15rem;
      }

      .hero-desc {
        font-size: 1rem;
      }

      .hero-actions .btn {
        width: 100%;
        padding: 0.9rem 1.8rem;
      }

      .safe-strip-grid {
        flex-direction: column;
        align-items: stretch;
      }

      .split-grid {
        grid-template-columns: 1fr;
        gap: 28px;
      }

      .split-media {
        order: -1;
      }

      .split-media.media-next {
        order: 1;
      }

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

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

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

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

      .cta-action {
        flex-direction: column;
        width: 100%;
      }

      .cta-action .btn {
        width: 100%;
      }

      .site-footer .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
        padding: 48px 0 36px;
      }

      .footer-bottom-links {
        flex-wrap: wrap;
      }

      .faq-item summary {
        align-items: flex-start;
      }

      .faq-item .faq-icon {
        flex: 0 0 26px;
        width: 26px;
        height: 26px;
      }
    }

    @media screen and (max-width: 480px) {
      .section-tag {
        font-size: 0.72rem;
      }

      .safe-strip-grid {
        gap: 16px;
      }

      .safe-strip-item {
        font-size: 0.9rem;
      }
    }