/* roulang page: index */
:root {
  --brand-primary: #1F4D3A;
  --brand-primary-dark: #143025;
  --brand-secondary: #C9A227;
  --brand-secondary-dark: #A8851D;
  --accent: #8C2F39;
  --bg: #FAF8F5;
  --surface: #FFFFFF;
  --text: #1F2933;
  --text-muted: #52606D;
  --text-muted-2: #9AA5B1;
  --border: #E8E2D9;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-login: 16px;
  --shadow-sm: 0 1px 2px rgba(31,41,51,0.06);
  --shadow-md: 0 4px 16px rgba(31,41,51,0.08);
  --shadow-lg: 0 12px 32px rgba(31,41,51,0.12);
  --font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --nav-height: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  padding-bottom: 80px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--text-muted); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--brand-primary); }
.container { max-width: 1200px; padding-left: 24px; padding-right: 24px; }
@media (max-width: 768px) { .container { padding-left: 16px; padding-right: 16px; } }
h1, h2, h3, h4, h5, h6 { font-weight: 700; color: var(--text); }
.font-mono { font-variant-numeric: tabular-nums; }
.btn { border-radius: 10px; font-weight: 600; transition: all .2s ease; border: 1px solid transparent; padding: 12px 24px; }
.btn:focus { outline: none; box-shadow: 0 0 0 3px rgba(201,162,39,.3); }
.btn-gold {
  background: var(--brand-secondary);
  color: #1F2933 !important;
  border-color: var(--brand-secondary);
}
.btn-gold:hover {
  background: var(--brand-secondary-dark);
  border-color: var(--brand-secondary-dark);
  color: #fff !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-gold:active { transform: translateY(0); }
.btn-primary-custom {
  background: var(--brand-primary);
  color: #fff !important;
  border-color: var(--brand-primary);
}
.btn-primary-custom:hover {
  background: var(--brand-primary-dark);
  border-color: var(--brand-primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-outline-custom {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline-custom:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}
.btn-outline-light-custom {
  background: transparent;
  border: 1px solid rgba(255,255,255,.45);
  color: #fff;
}
.btn-outline-light-custom:hover {
  border-color: #fff;
  color: #fff;
  background: rgba(255,255,255,.08);
}
.btn-white {
  background: #fff;
  color: var(--brand-primary) !important;
  border-color: #fff;
}
.btn-white:hover {
  background: #f0ede8;
  border-color: #f0ede8;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(0,0,0,.1);
}
.form-control {
  height: 46px;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 12px 14px;
  background: var(--surface);
  font-size: 15px;
  color: var(--text);
  transition: border-color .2s, box-shadow .2s;
}
.form-control:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(31,77,58,.15);
  outline: none;
  background: var(--surface);
  color: var(--text);
}
.form-control::placeholder { color: var(--text-muted-2); }
.form-control.is-invalid { border-color: var(--accent); }
.form-check-input:checked { background-color: var(--brand-primary); border-color: var(--brand-primary); }
.form-check-input:focus { box-shadow: 0 0 0 3px rgba(31,77,58,.15); border-color: var(--brand-primary); }
.badge { font-weight: 600; font-size: 12px; line-height: 18px; padding: 3px 10px; border-radius: 20px; }

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(250,248,245,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-height);
}
.custom-navbar { padding: 0; min-height: var(--nav-height); }
.navbar-brand { display: flex; align-items: center; gap: 10px; margin-right: 32px; padding: 0; }
.brand-icon {
  width: 32px; height: 32px;
  background: var(--brand-primary);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--brand-secondary);
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}
.brand-text { font-size: 20px; font-weight: 800; color: var(--text); letter-spacing: -0.01em; }
.brand-pill {
  background: rgba(201,162,39,.1);
  border: 1px solid rgba(201,162,39,.35);
  color: var(--brand-secondary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 2px 10px;
  border-radius: 20px;
  white-space: nowrap;
}
.navbar-nav { gap: 6px; }
.navbar-nav .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 12px !important;
  border-radius: 8px;
  position: relative;
  transition: color .2s ease;
}
.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--brand-primary);
  border-radius: 2px;
  transition: width .25s ease;
}
.navbar-nav .nav-link:hover { color: var(--text); }
.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after { width: 24px; }
.navbar-nav .nav-link.active { color: var(--text); }
.dropdown-menu {
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  padding: 8px;
  background: var(--surface);
  min-width: 180px;
}
.dropdown-menu .dropdown-item {
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 10px 14px;
  transition: all .15s ease;
}
.dropdown-menu .dropdown-item:hover { background: rgba(31,77,58,.05); color: var(--brand-primary); }
.nav-actions { display: flex; align-items: center; gap: 12px; margin-left: 16px; }
.command-search {
  display: flex;
  align-items: center;
  gap: 6px;
  width: 200px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--surface);
  padding: 0 8px 0 10px;
  transition: border-color .2s, box-shadow .2s;
  cursor: text;
}
.command-search:hover, .command-search:focus-within {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(31,77,58,.08);
}
.command-search .fa-search { font-size: 13px; color: var(--text-muted-2); }
.command-search input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 14px;
  flex: 1;
  color: var(--text);
  min-width: 0;
}
.command-search kbd {
  font-family: var(--font-family);
  font-size: 11px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 5px;
  padding: 1px 5px;
  color: var(--text-muted-2);
  line-height: 1.4;
  white-space: nowrap;
}
.nav-actions .btn { padding: 8px 18px; font-size: 14px; white-space: nowrap; }

/* ===== Hero ===== */
.hero-section {
  position: relative;
  padding: 96px 0 100px;
  background: 
    linear-gradient(rgba(20,48,37,.65), rgba(20,48,37,.70)),
    url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  overflow: hidden;
}
.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(20,48,37,.25), transparent 60%);
  pointer-events: none;
}
.hero-section .container { position: relative; z-index: 2; }
.hero-kicker {
  display: inline-block;
  background: rgba(201,162,39,.18);
  border: 1px solid rgba(201,162,39,.5);
  color: #E8D48B;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
}
.hero-title {
  font-size: 44px;
  line-height: 1.2;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  text-shadow: 0 2px 10px rgba(0,0,0,.3);
}
.hero-subtitle {
  font-size: 18px;
  line-height: 1.6;
  color: rgba(255,255,255,.9);
  max-width: 440px;
  margin-bottom: 32px;
  font-weight: 400;
}
.hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-buttons .btn { padding: 14px 32px; font-size: 16px; }

/* Login Card */
.login-card {
  background: var(--surface);
  border-radius: var(--radius-login);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 32px;
  max-width: 380px;
  margin-left: auto;
  color: var(--text);
}
.login-card .login-title { font-size: 22px; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.login-card .login-subtitle { font-size: 14px; color: var(--text-muted); margin-bottom: 24px; }
.login-card .form-group { margin-bottom: 18px; }
.login-card .form-label { font-size: 13px; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.captcha-row { display: flex; gap: 10px; }
.captcha-box {
  width: 120px;
  height: 46px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: linear-gradient(135deg, rgba(31,77,58,.06), rgba(201,162,39,.06));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--brand-primary);
  flex-shrink: 0;
  user-select: none;
  font-style: italic;
}
.login-card .form-check-label { font-size: 13px; color: var(--text-muted); }
.login-card .forgot-link { font-size: 13px; color: var(--text-muted); }
.login-card .forgot-link:hover { color: var(--brand-primary); }
.login-card .btn-login {
  width: 100%;
  margin-top: 24px;
  padding: 14px;
  font-size: 15px;
}
.login-options { display: flex; align-items: center; justify-content: center; gap: 12px; margin-top: 20px; }
.login-options .divider { flex: 1; height: 1px; background: var(--border); }
.login-options .divider-text { font-size: 12px; color: var(--text-muted-2); white-space: nowrap; }
.login-register {
  display: block;
  text-align: center;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-primary);
}
.login-register:hover { text-decoration: underline; }
.login-security {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted-2);
}
.login-security i { color: var(--brand-primary); }

/* ===== Features ===== */
.features-section { padding: 96px 0; background: var(--bg); }
.features-row { gap: 0; }
.feature-item {
  padding: 24px 32px;
  position: relative;
  border-left: 1px solid var(--border);
}
.feature-item:first-child { border-left: none; }
.feature-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--brand-secondary);
  display: block;
  margin-bottom: 12px;
  line-height: 1;
}
.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: rgba(31,77,58,.06);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  font-size: 18px;
  margin-bottom: 16px;
}
.feature-item h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; color: var(--text); }
.feature-item p { font-size: 15px; line-height: 1.7; color: var(--text-muted); margin-bottom: 0; }

/* ===== Scenario ===== */
.scenario-section {
  padding: 96px 0;
  background: linear-gradient(90deg, var(--brand-primary-dark), var(--brand-primary));
  color: #fff;
  position: relative;
  overflow: hidden;
}
.scenario-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.scenario-section .container { position: relative; z-index: 2; }
.scenario-section h2 {
  color: #fff;
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 28px;
  line-height: 1.3;
}
.scenario-list { list-style: none; padding: 0; }
.scenario-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: rgba(255,255,255,.9);
  font-size: 16px;
  margin-bottom: 16px;
  line-height: 1.6;
}
.scenario-list li i { color: var(--brand-secondary); font-size: 15px; margin-top: 5px; }
.browser-window {
  background: #2D2D2D;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0,0,0,.35);
  position: relative;
}
.browser-bar {
  background: #3C3C3C;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.browser-bar span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}
.browser-bar span:nth-child(1) { background: #FF5F57; }
.browser-bar span:nth-child(2) { background: #FEBC2E; }
.browser-bar span:nth-child(3) { background: #28C840; }
.browser-url {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background: #2A2A2A;
  color: #9AA0A9;
  font-size: 12px;
  padding: 4px 14px;
  border-radius: 6px;
  font-family: var(--font-family);
}
.browser-body {
  position: relative;
  aspect-ratio: 16/10;
  background: #fff;
}
.browser-body img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.bubble {
  position: absolute;
  background: #fff;
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.bubble::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 20px;
  width: 12px;
  height: 12px;
  background: #fff;
  transform: rotate(45deg);
  box-shadow: 3px 3px 6px rgba(0,0,0,.06);
}
.bubble i { color: var(--brand-primary); font-size: 12px; }
.bubble-1 { top: 16px; left: 16px; }
.bubble-2 { bottom: 16px; right: 16px; }

/* ===== News Section ===== */
.news-section { padding: 96px 0; background: var(--bg); }
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}
.section-head h2 { font-size: 30px; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 0; }
.view-all { font-size: 14px; font-weight: 600; color: var(--text-muted); display: inline-flex; align-items: center; gap: 8px; transition: all .2s; }
.view-all:hover { color: var(--brand-primary); }
.view-all i { font-size: 12px; transition: transform .2s; }
.view-all:hover i { transform: translateX(4px); }
.post-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: block;
  color: var(--text);
  box-shadow: var(--shadow-sm);
  transition: all .25s ease;
}
.post-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
  color: var(--text);
  border-color: rgba(201,162,39,.3);
}
.post-card-large {
  display: flex;
  flex-direction: row;
  height: 100%;
}
.post-card-large .post-cover {
  width: 46%;
  overflow: hidden;
  flex-shrink: 0;
  background: #f0ede8;
}
.post-card-large .post-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s ease;
}
.post-card-large:hover .post-cover img { transform: scale(1.04); }
.post-card-large .post-body { padding: 28px 24px; display: flex; flex-direction: column; justify-content: center; }
.post-card-small { padding: 24px 20px; height: 100%; }
.post-card-small + .post-card-small { margin-top: 16px; }
.post-badge {
  display: inline-block;
  background: rgba(31,77,58,.08);
  color: var(--brand-primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  margin-bottom: 10px;
}
.post-card h3 {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 8px;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card-small p { -webkit-line-clamp: 1; }
.post-meta { font-size: 12px; color: var(--text-muted-2); }
.post-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--brand-primary);
  margin-top: auto;
  transition: gap .2s;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.post-card:hover .post-link { text-decoration: underline; }
.post-empty {
  text-align: center;
  padding: 80px 24px;
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
}
.post-empty i {
  font-size: 48px;
  color: var(--text-muted-2);
  opacity: .5;
  margin-bottom: 16px;
  display: block;
}
.post-empty h4 { font-size: 18px; font-weight: 600; color: var(--text-muted); margin-bottom: 8px; }
.post-empty p { font-size: 14px; color: var(--text-muted-2); margin-bottom: 0; }
.row-news .col-news-main { display: flex; }
.row-news .col-news-side { display: flex; flex-direction: column; }

/* ===== Social Proof ===== */
.social-proof-section { padding: 80px 0; background: #F3F0EB; }
.logos-wall {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  margin-bottom: 48px;
  align-items: center;
}
.logo-placeholder {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-muted-2);
  opacity: .5;
  transition: all .2s ease;
  letter-spacing: 1px;
  cursor: default;
  padding: 8px 16px;
  border-radius: 8px;
}
.logo-placeholder:hover { opacity: 1; color: var(--text); background: var(--surface); box-shadow: var(--shadow-sm); }
.stats-row {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-bottom: 56px;
  text-align: center;
}
.stat-item { text-align: center; }
.stat-num {
  font-size: 40px;
  font-weight: 800;
  color: var(--brand-secondary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.stat-label { font-size: 14px; color: var(--text-muted); margin-top: 4px; }
.testimonial { text-align: center; max-width: 620px; margin: 0 auto; }
.testimonial .fa-quote-left { color: var(--brand-secondary); font-size: 28px; opacity: .7; margin-bottom: 12px; display: block; }
.testimonial p { font-size: 22px; line-height: 1.6; color: var(--text); font-weight: 500; font-style: italic; margin-bottom: 16px; }
.testimonial span { font-size: 14px; color: var(--text-muted); }

/* ===== FAQ ===== */
.faq-section { padding: 96px 0; background: var(--bg); }
.faq-section .container { max-width: 800px; }
.faq-section h2 { text-align: center; font-size: 30px; margin-bottom: 12px; }
.faq-section .section-desc { text-align: center; font-size: 15px; color: var(--text-muted); margin-bottom: 44px; }
.accordion-item {
  border: 1px solid var(--border);
  border-radius: 12px !important;
  margin-bottom: 12px;
  background: var(--surface);
  overflow: hidden;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.accordion-item:hover { border-color: var(--brand-primary); }
.accordion-button {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  background: var(--surface);
  padding: 18px 22px;
  box-shadow: none !important;
  transition: color .2s;
}
.accordion-button:not(.collapsed) { color: var(--brand-primary); background: var(--surface); }
.accordion-button:focus { box-shadow: none; border-color: var(--border); }
.accordion-button::after {
  background-image: none;
  content: '+';
  font-size: 22px;
  font-weight: 400;
  color: var(--text-muted);
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .25s ease;
  transform: none;
  background-size: contain;
}
.accordion-button:not(.collapsed)::after { transform: rotate(45deg); color: var(--brand-primary); }
.accordion-body {
  padding: 0 22px 18px;
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== CTA ===== */
.cta-section { padding: 80px 0; background: var(--bg); }
.cta-panel {
  background: linear-gradient(90deg, rgba(201,162,39,.12), rgba(201,162,39,.2));
  border: 2px solid var(--brand-secondary);
  border-radius: 20px;
  padding: 56px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-panel h2 { font-size: 28px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.cta-panel p { font-size: 16px; color: var(--text-muted); margin-bottom: 28px; }
.cta-panel .btn-white {
  background: var(--text);
  color: #fff !important;
  border-color: var(--text);
  padding: 14px 36px;
  font-size: 16px;
}
.cta-panel .btn-white:hover {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--brand-primary-dark);
  color: #C8D1CC;
  padding-top: 56px;
  min-height: 280px;
}
.site-footer .footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.site-footer .footer-logo-icon {
  width: 32px; height: 32px;
  background: var(--brand-secondary);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--brand-primary-dark);
  font-weight: 800;
  font-size: 16px;
}
.site-footer .footer-brand-text { font-size: 18px; font-weight: 800; color: #fff; }
.footer-desc { font-size: 14px; line-height: 1.7; color: #A0B3AA; margin-bottom: 0; max-width: 280px; }
.site-footer h5 {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  text-transform: none;
  letter-spacing: .02em;
  position: relative;
  padding-bottom: 10px;
}
.site-footer h5::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--brand-secondary);
  border-radius: 2px;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 8px; }
.footer-links a {
  font-size: 14px;
  color: #A0B3AA;
  transition: all .2s ease;
  display: inline-block;
}
.footer-links a:hover { color: var(--brand-secondary); transform: translateX(3px); }
.footer-contact li { display: flex; align-items: flex-start; gap: 8px; margin-bottom: 10px; }
.footer-contact i { color: var(--brand-secondary); font-size: 13px; margin-top: 5px; width: 16px; }
.footer-contact .contact-text { font-size: 14px; color: #A0B3AA; line-height: 1.6; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  margin-top: 48px;
  text-align: center;
  font-size: 13px;
  color: #7E968C;
}
.footer-bottom a { color: #7E968C; }
.footer-bottom a:hover { color: var(--brand-secondary); }

/* ===== Bottom Conversion Bar ===== */
.bottom-conversion {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  height: 64px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  box-shadow: 0 -4px 16px rgba(31,41,51,.06);
  z-index: 1030;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 0 24px;
  transition: transform .3s ease, opacity .3s ease;
}
.bottom-conversion.hidden { transform: translateY(100%); opacity: 0; }
.bottom-conversion .convert-text { font-size: 14px; font-weight: 500; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 55vw; }
.bottom-conversion .btn { white-space: nowrap; padding: 8px 20px; }
.bottom-conversion .close-bar {
  background: transparent;
  border: none;
  font-size: 22px;
  color: var(--text-muted-2);
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  transition: color .2s;
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
}
.bottom-conversion .close-bar:hover { color: var(--text); }
@media (max-width: 520px) {
  .bottom-conversion { height: 56px; padding: 0 12px; gap: 10px; }
  .bottom-conversion .convert-text { max-width: 48vw; font-size: 12px; }
  .bottom-conversion .btn { padding: 6px 14px; font-size: 13px; }
  body { padding-bottom: 72px; }
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .navbar-nav { gap: 0; padding: 10px 0; }
  .navbar-collapse {
    background: var(--surface);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 16px;
    margin-top: 8px;
    border: 1px solid var(--border);
  }
  .nav-actions { margin-left: 0; gap: 8px; flex-wrap: wrap; }
  .command-search { width: 100%; }
  .hero-section { padding: 72px 0 80px; }
  .hero-title { font-size: 38px; }
  .login-card { max-width: 100%; margin-top: 40px; margin-left: 0; }
  .feature-item { border-left: none !important; border-bottom: 1px solid var(--border); }
  .feature-item:last-child { border-bottom: none; }
  .scenario-section { padding: 64px 0; }
  .browser-window { margin-top: 32px; }
}
@media (max-width: 767.98px) {
  .hero-section { padding: 56px 0 64px; }
  .hero-title { font-size: 32px; line-height: 1.25; }
  .hero-subtitle { font-size: 16px; }
  .features-section { padding: 64px 0; }
  .feature-item { padding: 24px 16px; }
  .section-head { margin-bottom: 32px; flex-direction: column; align-items: flex-start; gap: 12px; }
  .news-section { padding: 64px 0; }
  .post-card-large { flex-direction: column; }
  .post-card-large .post-cover { width: 100%; height: 180px; }
  .stats-row { gap: 24px; flex-direction: column; align-items: center; }
  .cta-panel { padding: 40px 20px; }
  .cta-panel h2 { font-size: 24px; }
  .site-footer { padding-top: 40px; }
  .footer-col { margin-bottom: 24px; }
  .hero-buttons .btn { width: 100%; }
  .logos-wall { gap: 20px; }
  .logo-placeholder { font-size: 14px; padding: 6px 10px; }
}
@media (max-width: 575.98px) {
  body { font-size: 15px; }
  .hero-buttons .btn { width: 100%; }
  .brand-text { font-size: 18px; }
  .brand-pill { font-size: 11px; padding: 1px 8px; }
  .command-search { display: none; }
}

/* roulang page: article */
:root {
  --brand-primary: #1F4D3A;
  --brand-primary-dark: #143025;
  --brand-secondary: #C9A227;
  --brand-secondary-dark: #A8851D;
  --accent: #8C2F39;
  --bg: #FAF8F5;
  --surface: #FFFFFF;
  --text: #1F2933;
  --text-muted: #52606D;
  --text-muted-2: #9AA5B1;
  --border: #E8E2D9;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 2px rgba(31,41,51,0.06);
  --shadow-md: 0 4px 16px rgba(31,41,51,0.08);
  --shadow-lg: 0 12px 32px rgba(31,41,51,0.12);
  --transition: 0.2s ease;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover {
  color: var(--brand-primary);
}
img {
  max-width: 100%;
  height: auto;
}
ul, ol {
  list-style-position: inside;
}

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

/* ========== 按钮系统 ========== */
.btn {
  border-radius: 10px;
  padding: 12px 24px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: all var(--transition);
  font-size: 15px;
  line-height: 1.4;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.btn-gold {
  background: var(--brand-secondary);
  color: #1F2933;
  border-color: var(--brand-secondary);
}
.btn-gold:hover {
  background: var(--brand-secondary-dark);
  border-color: var(--brand-secondary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-gold:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}
.btn-primary {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
}
.btn-primary:hover {
  background: var(--brand-primary-dark);
  border-color: var(--brand-primary-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-outline-custom {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn-outline-custom:hover {
  border-color: var(--brand-primary);
  color: var(--brand-primary);
}
.btn-lg {
  padding: 16px 32px;
  font-size: 16px;
}
.btn-sm {
  padding: 8px 16px;
  font-size: 13px;
}
.btn:focus-visible {
  outline: 3px solid rgba(31,77,58,0.2);
  outline-offset: 2px;
}

/* ========== 导航 ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1030;
  background: rgba(250,248,245,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.custom-navbar {
  min-height: 72px;
  padding: 0;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  margin-right: 24px;
  font-family: var(--font-sans);
}
.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: var(--brand-primary);
  color: var(--brand-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  font-style: italic;
  line-height: 1;
  flex-shrink: 0;
}
.brand-text {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.brand-pill {
  display: inline-block;
  background: rgba(201,162,39,0.1);
  color: var(--brand-secondary-dark);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid rgba(201,162,39,0.3);
  line-height: 1.4;
  white-space: nowrap;
}
.custom-navbar .navbar-nav {
  gap: 4px;
  align-items: center;
}
.custom-navbar .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 12px;
  position: relative;
  transition: color var(--transition);
}
.custom-navbar .nav-link::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--brand-primary);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition);
}
.custom-navbar .nav-link:hover {
  color: var(--text);
}
.custom-navbar .nav-link:hover::after,
.custom-navbar .nav-link.active::after {
  transform: scaleX(1);
}
.custom-navbar .nav-link.active {
  color: var(--text);
  font-weight: 600;
}
.navbar-toggler {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  background: var(--surface);
}
.navbar-toggler:focus {
  box-shadow: 0 0 0 3px rgba(31,77,58,0.15);
}
.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(31,41,51,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.dropdown-menu {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 8px;
  backdrop-filter: blur(12px);
  background: rgba(255,255,255,0.96);
}
.dropdown-item {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: 8px;
  padding: 10px 14px;
  transition: all var(--transition);
}
.dropdown-item:hover {
  background: rgba(31,77,58,0.06);
  color: var(--brand-primary);
}
.dropdown-item.active {
  background: rgba(31,77,58,0.1);
  color: var(--brand-primary);
  font-weight: 600;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: 12px;
}
.command-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 6px 12px;
  width: 200px;
  height: 38px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.command-search:focus-within {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(31,77,58,0.12);
}
.command-search i {
  color: var(--text-muted-2);
  font-size: 13px;
}
.command-search input {
  border: none;
  outline: none;
  flex: 1;
  font-size: 13px;
  color: var(--text);
  background: transparent;
  min-width: 0;
}
.command-search input::placeholder {
  color: var(--text-muted-2);
}
.command-search kbd {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: 11px;
  padding: 1px 5px;
  color: var(--text-muted-2);
  font-family: var(--font-sans);
}

/* ========== 面包屑 ========== */
.breadcrumb-section {
  background: rgba(0,0,0,0.2);
  padding: 14px 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.breadcrumb {
  margin: 0;
  padding: 0;
  background: transparent;
}
.breadcrumb-item {
  font-size: 13px;
  font-weight: 500;
}
.breadcrumb-item a {
  color: rgba(255,255,255,0.75);
}
.breadcrumb-item a:hover {
  color: #fff;
}
.breadcrumb-item + .breadcrumb-item::before {
  color: rgba(255,255,255,0.5);
  content: '/';
}
.breadcrumb-item.active {
  color: var(--brand-secondary);
}
.breadcrumb-item .text-truncate {
  max-width: 320px;
  display: inline-block;
  vertical-align: bottom;
}

/* ========== 文章 Hero ========== */
.article-hero {
  background:
    linear-gradient(rgba(20,48,37,0.82), rgba(20,48,37,0.72)),
    url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  padding: 64px 0 56px;
  color: #fff;
}
.article-hero .breadcrumb-container {
  margin-bottom: 40px;
}
.article-head {
  max-width: 860px;
}
.badge-category {
  display: inline-block;
  background: rgba(201,162,39,0.2);
  color: var(--brand-secondary);
  border: 1px solid rgba(201,162,39,0.4);
  border-radius: 20px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.05em;
  margin-bottom: 16px;
}
.article-head h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  color: #fff;
}
.article-summary {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  margin-bottom: 20px;
  max-width: 720px;
}
.article-head .meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}
.article-head .meta-row span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.article-head .meta-row i {
  color: var(--brand-secondary);
  font-size: 14px;
}

/* ========== 正文区域 ========== */
.article-main {
  padding: 56px 0 64px;
  background: var(--bg);
}
.article-content-wrap {
  max-width: 760px;
  margin: 0 auto;
}
.article-content {
  background: var(--surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  padding: 48px 56px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}
.article-content > * + * {
  margin-top: 20px;
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
  margin-top: 40px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.article-content h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  margin-top: 32px;
}
.article-content p {
  margin-bottom: 16px;
}
.article-content img {
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  margin: 24px 0;
}
.article-content blockquote {
  border-left: 4px solid var(--brand-secondary);
  background: rgba(201,162,39,0.04);
  padding: 16px 20px;
  border-radius: 0 8px 8px 0;
  color: var(--text-muted);
  font-style: normal;
}
.article-content ul,
.article-content ol {
  padding-left: 24px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content code {
  background: rgba(31,77,58,0.06);
  color: var(--brand-primary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: "SFMono-Regular", Consolas, monospace;
}
.article-content pre {
  background: var(--brand-primary-dark);
  color: #E8E2D9;
  padding: 20px 24px;
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}

/* ========== 未找到 ========== */
.not-found {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  padding: 80px 40px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.not-found i {
  font-size: 48px;
  color: var(--text-muted-2);
  margin-bottom: 20px;
  display: block;
}
.not-found h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}
.not-found p {
  color: var(--text-muted);
  margin-bottom: 24px;
  font-size: 15px;
}

/* ========== 标签与分享 ========== */
.article-footer-meta {
  max-width: 760px;
  margin: 32px auto 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.tag-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  transition: all var(--transition);
  cursor: default;
}
.tag-item:hover {
  border-color: var(--brand-secondary);
  color: var(--brand-secondary-dark);
}
.share-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.share-row .share-label {
  font-size: 13px;
  color: var(--text-muted-2);
}
.share-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 14px;
  cursor: default;
  transition: all var(--transition);
}
.share-icon:hover {
  border-color: var(--brand-secondary);
  color: var(--brand-secondary-dark);
  transform: translateY(-2px);
}

/* ========== 相关阅读 ========== */
.related-section {
  padding: 56px 0 72px;
  background: var(--surface);
  border-top: 1px solid var(--border);
}
.related-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 32px;
}
.related-head h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text);
  margin: 0;
}
.related-card {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  height: 100%;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  color: var(--text);
}
.related-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--text);
}
.related-card-img {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #E8E2D9;
}
.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.related-card-body {
  padding: 20px 20px 16px;
}
.related-card-body .badge-category {
  margin-bottom: 8px;
  font-size: 11px;
  padding: 3px 10px;
}
.related-card-body h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.related-card:hover .related-card-body h3 {
  color: var(--brand-primary);
}
.related-card-body p {
  font-size: 13px;
  color: var(--text-muted-2);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ========== CTA 面板 ========== */
.article-cta {
  padding: 72px 0;
  background: var(--bg);
}
.cta-box {
  background: linear-gradient(135deg, rgba(201,162,39,0.85) 0%, rgba(201,162,39,0.55) 100%);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  text-align: center;
  box-shadow: var(--shadow-md);
}
.cta-box h2 {
  font-size: 28px;
  font-weight: 700;
  color: #1F2933;
  margin-bottom: 12px;
}
.cta-box p {
  font-size: 16px;
  color: rgba(31,41,51,0.8);
  margin-bottom: 28px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.cta-box .btn-white {
  background: #fff;
  color: var(--brand-primary);
  border: none;
  font-weight: 700;
}
.cta-box .btn-white:hover {
  background: var(--bg);
  color: var(--brand-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--brand-primary-dark);
  color: #C8D1CC;
  padding-top: 56px;
  min-height: 280px;
}
.site-footer h5 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(201,162,39,0.2);
  border: 1px solid rgba(201,162,39,0.4);
  color: var(--brand-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-style: italic;
  font-size: 18px;
}
.footer-brand-text {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
}
.footer-desc {
  font-size: 14px;
  line-height: 1.7;
  color: #A7B5AD;
  margin-bottom: 0;
  max-width: 320px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #A7B5AD;
  font-size: 14px;
  transition: color var(--transition);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--brand-secondary);
}
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #A7B5AD;
  font-size: 14px;
}
.footer-contact i {
  color: var(--brand-secondary);
  margin-top: 4px;
  font-size: 13px;
  width: 16px;
  text-align: center;
  flex-shrink: 0;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: 20px 0;
  margin-top: 40px;
  text-align: center;
  font-size: 13px;
  color: #8BA59A;
}
.footer-bottom a {
  color: #C8D1CC;
}
.footer-bottom a:hover {
  color: var(--brand-secondary);
}

/* ========== Bootstrap 覆盖 ========== */
.btn:focus,
.btn:active:focus {
  box-shadow: 0 0 0 3px rgba(31,77,58,0.15);
}
.card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.form-control {
  height: 46px;
  border-radius: 10px;
  border: 1px solid var(--border);
  padding: 12px 14px;
  font-size: 15px;
  color: var(--text);
  background: var(--surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px rgba(31,77,58,0.15);
}
.form-control::placeholder {
  color: var(--text-muted-2);
}
.form-check-input:checked {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
}
.accordion-button {
  border: none;
  background: transparent;
}
.badge {
  font-weight: 600;
}

/* ========== 响应式 ========== */
@media (max-width: 991px) {
  .custom-navbar {
    padding-top: 12px;
    padding-bottom: 12px;
  }
  .nav-actions {
    flex-wrap: wrap;
    margin: 12px 0 0;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    width: 100%;
  }
  .command-search {
    flex: 1;
    width: auto;
    min-width: 0;
  }
  .custom-navbar .navbar-nav {
    padding: 12px 0 0;
  }
  .custom-navbar .nav-link {
    padding: 10px 12px;
  }
  .article-content {
    padding: 32px 28px;
  }
  .article-head h1 {
    font-size: 30px;
  }
  .related-card-body h3 {
    font-size: 15px;
  }
}

@media (max-width: 768px) {
  .article-hero {
    padding: 48px 0 40px;
  }
  .article-head h1 {
    font-size: 26px;
  }
  .article-summary {
    font-size: 15px;
  }
  .article-content {
    padding: 24px 20px;
    font-size: 15px;
  }
  .article-content h2 {
    font-size: 22px;
  }
  .article-content h3 {
    font-size: 18px;
  }
  .article-footer-meta {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-box {
    padding: 40px 24px;
  }
  .cta-box h2 {
    font-size: 24px;
  }
  .breadcrumb-item .text-truncate {
    max-width: 160px;
  }
  .related-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
}

@media (max-width: 520px) {
  .brand-text {
    font-size: 18px;
  }
  .brand-pill {
    font-size: 11px;
    padding: 2px 8px;
  }
  .article-head .meta-row {
    gap: 10px;
    font-size: 12px;
  }
  .article-content {
    padding: 20px 16px;
    border-radius: var(--radius-sm);
  }
  .article-main {
    padding: 32px 0 48px;
  }
  .related-section {
    padding: 40px 0 56px;
  }
  .article-cta {
    padding: 48px 0;
  }
  .site-footer {
    padding-top: 40px;
  }
  .footer-bottom {
    font-size: 12px;
  }
  .command-search {
    width: 100%;
  }
}

/* roulang page: category1 */
:root{
  --brand-primary:#1F4D3A;
  --brand-primary-dark:#143025;
  --brand-secondary:#C9A227;
  --brand-secondary-dark:#A8851D;
  --accent:#8C2F39;
  --bg:#FAF8F5;
  --surface:#FFFFFF;
  --text:#1F2933;
  --text-muted:#52606D;
  --text-muted-2:#9AA5B1;
  --border:#E8E2D9;
  --radius-sm:8px;
  --radius-md:12px;
  --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(31,41,51,0.06);
  --shadow-md:0 4px 16px rgba(31,41,51,0.08);
  --shadow-lg:0 12px 32px rgba(31,41,51,0.12);
  --font-main:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-main);
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
img{max-width:100%;display:block}
a{color:var(--text-muted);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-primary)}
.container{max-width:1200px;padding-left:24px;padding-right:24px}
ul,ol{list-style:none;padding:0;margin:0}
:focus-visible{outline:3px solid rgba(201,162,39,.45);outline-offset:2px;border-radius:4px}

/* ===== 按钮 ===== */
.btn{border-radius:10px;font-weight:600;transition:all .2s ease;font-size:15px;line-height:1.4}
.btn-gold{
  background:var(--brand-secondary);
  color:#1F2933;
  border:none;
  padding:12px 24px;
  box-shadow:var(--shadow-sm);
}
.btn-gold:hover{
  background:var(--brand-secondary-dark);
  color:#1F2933;
  transform:translateY(-1px);
  box-shadow:var(--shadow-md);
}
.btn-gold:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-green{
  background:var(--brand-primary);
  color:#fff;
  border:none;
  padding:12px 24px;
}
.btn-green:hover{background:var(--brand-primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-md)}
.btn-outline-custom{
  background:transparent;
  border:1px solid var(--border);
  color:var(--text);
  padding:10px 20px;
}
.btn-outline-custom:hover{border-color:var(--brand-primary);color:var(--brand-primary);background:rgba(31,77,58,.04)}
.btn-white{
  background:#fff;
  color:var(--brand-primary);
  border:none;
  padding:14px 32px;
  font-size:16px;
  border-radius:10px;
  font-weight:700;
  box-shadow:var(--shadow-md);
}
.btn-white:hover{background:var(--bg);color:var(--brand-primary-dark);transform:translateY(-1px)}

/* ===== 导航 ===== */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(250,248,245,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.custom-navbar{min-height:72px;padding:0}
.custom-navbar .navbar-brand{
  display:flex;
  align-items:center;
  gap:10px;
  padding:0;
  margin:0;
}
.brand-icon{
  width:38px;height:38px;
  border-radius:10px;
  background:var(--brand-primary);
  color:var(--brand-secondary);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:18px;
  box-shadow:var(--shadow-sm);
}
.brand-text{font-weight:800;font-size:20px;color:var(--text);letter-spacing:-0.01em}
.brand-pill{
  background:rgba(201,162,39,.14);
  color:var(--brand-secondary-dark);
  border:1px solid rgba(201,162,39,.32);
  font-size:12px;font-weight:600;
  padding:3px 10px;
  border-radius:20px;
  line-height:1.2;
}
.custom-navbar .navbar-nav{gap:4px}
.custom-navbar .nav-link{
  font-size:15px;
  color:var(--text-muted);
  font-weight:500;
  padding:10px 14px;
  position:relative;
  border-radius:8px;
}
.custom-navbar .nav-link:hover{
  color:var(--brand-primary);
  background:rgba(31,77,58,.04);
}
.custom-navbar .nav-link.active{
  color:var(--text);
  font-weight:600;
}
.custom-navbar .nav-link.active::after{
  content:'';
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  border-radius:2px;
  background:var(--brand-secondary);
}
.custom-navbar .dropdown-menu{
  border:1px solid var(--border);
  border-radius:12px;
  box-shadow:var(--shadow-lg);
  padding:8px;
  margin-top:10px;
  background:var(--surface);
}
.custom-navbar .dropdown-item{
  border-radius:8px;
  padding:9px 14px;
  font-size:14px;
  color:var(--text-muted);
  font-weight:500;
}
.custom-navbar .dropdown-item:hover{
  background:var(--bg);
  color:var(--brand-primary);
}
.custom-navbar .dropdown-item.active{
  background:var(--brand-primary);
  color:#fff;
}
.custom-navbar .dropdown-toggle::after{
  font-size:11px;
  border:0;
  content:'\f078';
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  vertical-align:1px;
  margin-left:6px;
}
.nav-actions{
  display:flex;
  align-items:center;
  gap:10px;
}
.command-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:200px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:10px;
  padding:7px 12px;
  color:var(--text-muted-2);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.command-search:focus-within{
  border-color:var(--brand-primary);
  box-shadow:0 0 0 3px rgba(31,77,58,.12);
}
.command-search i{font-size:13px}
.command-search input{
  border:none;outline:none;background:transparent;flex:1;
  font-size:14px;color:var(--text);
  min-width:0;
}
.command-search input::placeholder{color:var(--text-muted-2)}
.command-search kbd{
  font-size:11px;
  background:var(--bg);
  border:1px solid var(--border);
  border-radius:4px;
  padding:1px 6px;
  color:var(--text-muted);
  font-family:inherit;
}
.navbar-toggler{
  border:1px solid var(--border);
  border-radius:8px;
  padding:6px 10px;
}
.navbar-toggler:focus{box-shadow:none;border-color:var(--brand-primary)}
.navbar-toggler-icon{
  background-image:url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(31,41,51,0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===== 分类页 Hero ===== */
.category-hero{
  position:relative;
  background:linear-gradient(180deg,rgba(20,48,37,.78) 0%,rgba(31,77,58,.66) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  background-color:var(--brand-primary-dark);
  padding:96px 0 88px;
  text-align:center;
  color:#fff;
}
.hero-kicker{
  display:inline-block;
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--brand-secondary);
  background:rgba(201,162,39,.16);
  border:1px solid rgba(201,162,39,.32);
  padding:6px 16px;
  border-radius:30px;
  margin-bottom:20px;
}
.category-hero h1{
  font-size:48px;
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.2;
  margin-bottom:16px;
  color:#fff;
}
.category-hero .hero-subtitle{
  font-size:17px;
  line-height:1.7;
  color:rgba(255,255,255,.9);
  max-width:640px;
  margin:0 auto;
}

/* ===== 区块通用 ===== */
.section-padding{padding:96px 0}
.section-head{margin-bottom:48px}
.section-kicker{
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--brand-secondary-dark);
  margin-bottom:10px;
}
.section-title{
  font-size:30px;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--text);
  line-height:1.3;
  margin-bottom:12px;
}
.section-subtitle{
  font-size:16px;
  color:var(--text-muted);
  max-width:640px;
  line-height:1.7;
}

/* ===== 登录步骤区 ===== */
.login-steps-section{
  background:var(--bg);
  padding:96px 0;
}
.timeline-wrapper{
  position:relative;
}
.timeline-item{
  position:relative;
  padding:0 0 44px 68px;
}
.timeline-item:last-child{padding-bottom:0}
.timeline-item::before{
  content:'';
  position:absolute;
  left:19px;
  top:50px;
  bottom:6px;
  width:2px;
  background:var(--border);
}
.timeline-item:last-child::before{display:none}
.timeline-number{
  position:absolute;
  left:0;
  top:2px;
  width:40px;
  height:40px;
  border-radius:50%;
  background:var(--brand-primary);
  color:var(--brand-secondary);
  font-weight:800;
  font-size:13px;
  display:flex;
  align-items:center;
  justify-content:center;
  box-shadow:0 0 0 5px var(--bg);
  z-index:1;
  letter-spacing:.02em;
}
.timeline-item h3{
  font-size:20px;
  font-weight:700;
  color:var(--text);
  line-height:1.4;
  margin-bottom:8px;
}
.timeline-item p{
  font-size:15px;
  line-height:1.75;
  color:var(--text-muted);
  max-width:560px;
}

/* ===== 快速入口卡 ===== */
.quick-access-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:16px;
  box-shadow:var(--shadow-md);
  padding:34px 28px;
  position:sticky;
  top:96px;
}
.quick-access-icon{
  width:52px;height:52px;
  border-radius:14px;
  background:rgba(201,162,39,.15);
  color:var(--brand-secondary-dark);
  display:flex;align-items:center;justify-content:center;
  font-size:20px;
  margin-bottom:18px;
}
.quick-access-card h3{
  font-size:22px;
  font-weight:700;
  color:var(--text);
  margin-bottom:6px;
}
.quick-access-card .quick-desc{
  font-size:14px;
  color:var(--text-muted);
  margin-bottom:22px;
}
.quick-links{
  margin-top:8px;
}
.quick-links li{
  border-bottom:1px solid var(--border);
}
.quick-links li:last-child{border-bottom:none}
.quick-links a{
  display:flex;
  align-items:center;
  gap:10px;
  padding:13px 4px;
  font-size:15px;
  color:var(--text);
  font-weight:500;
  transition:color .2s ease,padding-left .2s ease;
}
.quick-links a i{
  font-size:12px;
  color:var(--brand-secondary-dark);
  transition:transform .2s ease;
}
.quick-links a:hover{
  color:var(--brand-primary);
  padding-left:8px;
}
.quick-links a:hover i{
  transform:translateX(3px);
}
.quick-access-note{
  margin-top:22px;
  background:rgba(140,47,57,.06);
  border:1px solid rgba(140,47,57,.12);
  border-radius:10px;
  padding:14px 16px;
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:13px;
  line-height:1.6;
  color:var(--accent);
}
.quick-access-note i{
  margin-top:3px;
  font-size:15px;
}

/* ===== 价值区 ===== */
.value-section{
  background:linear-gradient(105deg,rgba(20,48,37,.95) 0%,rgba(31,77,58,.9) 65%,rgba(201,162,39,.12) 100%),url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  background-color:var(--brand-primary-dark);
  color:#fff;
  padding:96px 0;
}
.value-section .section-title{
  color:#fff;
}
.value-section .section-subtitle{
  color:rgba(255,255,255,.78);
}
.value-section .section-kicker{
  color:var(--brand-secondary);
}
.value-points{
  margin-top:8px;
}
.value-points li{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:16px 0;
  border-bottom:1px solid rgba(255,255,255,.09);
}
.value-points li:last-child{border-bottom:none}
.value-points li i{
  color:var(--brand-secondary);
  font-size:15px;
  margin-top:5px;
  flex-shrink:0;
}
.value-points li .point-text{
  font-size:15px;
  line-height:1.7;
  color:rgba(255,255,255,.85);
}
.value-points li strong{
  display:block;
  color:#fff;
  font-size:16px;
  font-weight:600;
  margin-bottom:2px;
}
.value-image{
  border-radius:16px;
  box-shadow:0 16px 44px rgba(0,0,0,.3);
  width:100%;
  overflow:hidden;
  background:rgba(255,255,255,.08);
}
.value-image img{
  width:100%;
  height:auto;
  object-fit:cover;
}

/* ===== FAQ ===== */
.faq-section{
  background:var(--bg);
  padding:96px 0;
}
.faq-wrap{
  max-width:800px;
  margin:0 auto;
}
.custom-accordion .accordion-item{
  border:1px solid var(--border);
  border-radius:12px;
  background:var(--surface);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.custom-accordion .accordion-item:hover{
  border-color:var(--brand-primary);
  box-shadow:var(--shadow-sm);
}
.custom-accordion .accordion-button{
  background:var(--surface);
  color:var(--text);
  font-size:16px;
  font-weight:600;
  padding:18px 22px;
  box-shadow:none;
  border:none;
  line-height:1.5;
}
.custom-accordion .accordion-button:not(.collapsed){
  background:var(--surface);
  color:var(--brand-primary);
}
.custom-accordion .accordion-button:focus{
  box-shadow:none;
  border-color:var(--brand-primary);
}
.custom-accordion .accordion-button::after{
  content:'+';
  background-image:none;
  font-size:22px;
  font-weight:400;
  color:var(--brand-secondary-dark);
  width:24px;
  height:24px;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:transform .2s ease;
}
.custom-accordion .accordion-button:not(.collapsed)::after{
  transform:rotate(45deg);
}
.custom-accordion .accordion-body{
  padding:4px 22px 22px;
  font-size:15px;
  line-height:1.75;
  color:var(--text-muted);
  border-top:1px solid var(--border);
  margin-top:0;
}

/* ===== CTA ===== */
.cta-section{
  background:var(--bg);
  padding:0 0 96px;
}
.cta-panel{
  background:linear-gradient(120deg,var(--brand-secondary) 0%,#DDBE5F 55%,var(--brand-secondary) 100%);
  border-radius:20px;
  padding:64px 48px;
  text-align:center;
  box-shadow:var(--shadow-md);
  position:relative;
  overflow:hidden;
}
.cta-panel::before{
  content:'';
  position:absolute;
  top:-40px;
  right:-30px;
  width:160px;
  height:160px;
  border:2px solid rgba(255,255,255,.25);
  border-radius:50%;
}
.cta-panel::after{
  content:'';
  position:absolute;
  bottom:-50px;
  left:-20px;
  width:140px;
  height:140px;
  border:2px solid rgba(255,255,255,.2);
  border-radius:50%;
}
.cta-panel h2{
  font-size:30px;
  font-weight:800;
  color:#1F2933;
  margin-bottom:12px;
  letter-spacing:-.01em;
}
.cta-panel p{
  font-size:16px;
  color:rgba(31,41,51,.75);
  margin-bottom:28px;
  line-height:1.7;
}

/* ===== 页脚 ===== */
.site-footer{
  background:var(--brand-primary-dark);
  color:#C8D1CC;
  padding:56px 0 0;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-logo-icon{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--brand-primary);
  color:var(--brand-secondary);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;
  font-size:17px;
  border:1px solid rgba(255,255,255,.08);
}
.footer-brand-text{
  font-weight:800;
  font-size:18px;
  color:#fff;
}
.footer-desc{
  font-size:14px;
  line-height:1.7;
  color:#AEBAB2;
  max-width:300px;
}
.site-footer h5{
  color:#fff;
  font-size:15px;
  font-weight:700;
  margin-bottom:18px;
  letter-spacing:.02em;
}
.footer-links li{
  margin-bottom:10px;
}
.footer-links a{
  color:#C8D1CC;
  font-size:14px;
  transition:color .2s ease,padding-left .2s ease;
}
.footer-links a:hover{
  color:var(--brand-secondary);
  padding-left:4px;
}
.footer-contact li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:#C8D1CC;
  margin-bottom:12px;
}
.footer-contact i{
  color:var(--brand-secondary);
  margin-top:4px;
  font-size:13px;
  width:16px;
  text-align:center;
}
.footer-contact .contact-text{
  line-height:1.6;
}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);
  padding:22px 0;
  margin-top:24px;
  text-align:center;
  font-size:13px;
  color:#8FA49A;
}
.footer-bottom a{
  color:#C8D1CC;
}
.footer-bottom a:hover{
  color:var(--brand-secondary);
}

/* ===== 响应式 ===== */
@media (max-width:1199.98px){
  .custom-navbar .navbar-nav .nav-link{
    margin:0 8px;
    padding:10px 10px;
  }
  .command-search{
    width:160px;
  }
}
@media (max-width:991.98px){
  .custom-navbar .navbar-collapse{
    padding:16px 0;
    border-top:1px solid var(--border);
    margin-top:8px;
  }
  .custom-navbar .navbar-nav{
    gap:2px;
    margin-bottom:14px;
  }
  .custom-navbar .nav-link{
    padding:12px 14px;
  }
  .custom-navbar .nav-link.active::after{
    display:none;
  }
  .custom-navbar .dropdown-menu{
    box-shadow:none;
    border:none;
    background:var(--bg);
    margin-top:0;
    padding:4px 0 4px 16px;
  }
  .nav-actions{
    flex-direction:column;
    align-items:stretch;
    gap:10px;
  }
  .command-search{
    width:100%;
  }
  .nav-actions .btn{
    text-align:center;
    width:100%;
  }
  .quick-access-card{
    position:static;
    margin-top:40px;
  }
  .value-section .col-lg-6:first-child{
    margin-bottom:40px;
  }
}
@media (max-width:767.98px){
  .container{
    padding-left:16px;
    padding-right:16px;
  }
  .category-hero{
    padding:72px 0 64px;
  }
  .category-hero h1{
    font-size:34px;
  }
  .category-hero .hero-subtitle{
    font-size:15px;
  }
  .section-padding,.login-steps-section,.value-section,.faq-section{
    padding:64px 0;
  }
  .cta-section{
    padding:0 0 64px;
  }
  .section-title{
    font-size:24px;
  }
  .section-head{
    margin-bottom:32px;
  }
  .timeline-item{
    padding-left:56px;
  }
  .timeline-number{
    width:36px;
    height:36px;
    font-size:12px;
  }
  .timeline-item::before{
    left:17px;
  }
  .cta-panel{
    padding:44px 24px;
  }
  .cta-panel h2{
    font-size:24px;
  }
  .value-points li .point-text{
    font-size:14px;
  }
}
@media (max-width:575.98px){
  body{
    font-size:15px;
  }
  .category-hero h1{
    font-size:30px;
  }
  .hero-kicker{
    font-size:12px;
  }
  .quick-access-card{
    padding:26px 20px;
  }
  .custom-accordion .accordion-button{
    font-size:15px;
    padding:16px 16px;
  }
  .custom-accordion .accordion-body{
    padding:4px 16px 18px;
    font-size:14px;
  }
  .cta-panel p{
    font-size:14px;
  }
}

/* roulang page: category2 */
/* ============ Design Variables ============ */
        :root {
            --brand-primary: #1F4D3A;
            --brand-primary-dark: #143025;
            --brand-secondary: #C9A227;
            --brand-secondary-dark: #A8851D;
            --accent: #8C2F39;
            --bg: #FAF8F5;
            --surface: #FFFFFF;
            --text: #1F2933;
            --text-muted: #52606D;
            --text-muted-2: #9AA5B1;
            --border: #E8E2D9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 2px rgba(31, 41, 51, 0.06);
            --shadow-md: 0 4px 16px rgba(31, 41, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(31, 41, 51, 0.12);
            --font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --section-space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            font-size: 16px;
            line-height: 1.7;
            font-variant-numeric: tabular-nums;
            padding-bottom: 80px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-family);
            letter-spacing: -0.01em;
        }

        /* ============ Container ============ */
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ============ Buttons ============ */
        .btn {
            border-radius: 10px;
            padding: 12px 24px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.4;
            transition: all .2s ease;
            border: 1px solid transparent;
        }

        .btn:focus,
        .btn:focus-visible {
            outline: none;
            box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.25);
        }

        .btn-gold {
            background: var(--brand-secondary);
            color: #1F2933;
            border-color: var(--brand-secondary);
        }

        .btn-gold:hover {
            background: var(--brand-secondary-dark);
            border-color: var(--brand-secondary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-gold:active {
            transform: translateY(0);
            box-shadow: var(--shadow-sm);
        }

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

        .btn-green:hover {
            background: var(--brand-primary-dark);
            border-color: var(--brand-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
            border-radius: 10px;
            padding: 10px 20px;
            font-weight: 600;
        }

        .btn-outline-custom:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: rgba(31, 77, 58, 0.04);
        }

        .btn-white {
            background: #fff;
            color: var(--brand-primary);
            border-color: #fff;
            padding: 14px 36px;
            font-size: 16px;
            border-radius: 10px;
            font-weight: 700;
            transition: all .2s ease;
        }

        .btn-white:hover {
            background: var(--bg);
            color: var(--brand-primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-lg);
        }

        /* ============ Header Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(250, 248, 245, 0.92);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .custom-navbar {
            min-height: 72px;
            padding-top: 0;
            padding-bottom: 0;
        }

        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 0;
            margin-right: 0;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--brand-primary);
            color: var(--brand-secondary);
            border-radius: 8px;
            font-size: 18px;
            font-weight: 800;
            line-height: 1;
        }

        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.02em;
        }

        .brand-pill {
            display: inline-block;
            background: rgba(201, 162, 39, 0.12);
            color: var(--brand-secondary-dark);
            border: 1px solid rgba(201, 162, 39, 0.3);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 20px;
            line-height: 1.5;
            white-space: nowrap;
        }

        .custom-navbar .navbar-nav {
            gap: 0;
        }

        .custom-navbar .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 24px 14px;
            position: relative;
            transition: color .2s ease;
        }

        .custom-navbar .nav-link::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 16px;
            height: 2px;
            background: var(--brand-primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left center;
            transition: transform .25s ease;
        }

        .custom-navbar .nav-link:hover {
            color: var(--text);
        }

        .custom-navbar .nav-link:hover::after,
        .custom-navbar .nav-link.active::after {
            transform: scaleX(1);
        }

        .custom-navbar .nav-link.active {
            color: var(--text);
            font-weight: 600;
        }

        .custom-navbar .dropdown-menu {
            border: 1px solid var(--border);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            padding: 8px;
            background: var(--surface);
            margin-top: 8px;
        }

        .custom-navbar .dropdown-item {
            border-radius: 8px;
            padding: 10px 16px;
            font-size: 14px;
            color: var(--text-muted);
            transition: all .2s ease;
        }

        .custom-navbar .dropdown-item:hover,
        .custom-navbar .dropdown-item.active {
            background: rgba(31, 77, 58, 0.06);
            color: var(--brand-primary);
            font-weight: 600;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 0 12px;
            height: 38px;
            width: 200px;
            transition: border-color .2s ease;
        }

        .command-search:focus-within {
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 3px rgba(31, 77, 58, 0.12);
        }

        .command-search i {
            color: var(--text-muted-2);
            font-size: 13px;
        }

        .command-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 13px;
            color: var(--text);
            flex: 1;
            min-width: 0;
        }

        .command-search input::placeholder {
            color: var(--text-muted-2);
        }

        .command-search kbd {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 4px;
            font-size: 10px;
            padding: 2px 6px;
            color: var(--text-muted-2);
            font-family: var(--font-family);
            white-space: nowrap;
        }

        .custom-navbar .navbar-toggler {
            border-color: var(--border);
        }

        .custom-navbar .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(31, 77, 58, 0.15);
        }

        /* ============ Page Hero (Category Banner) ============ */
        .page-hero {
            position: relative;
            padding: 110px 0 90px;
            overflow: hidden;
        }

        .page-hero-bg {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        .page-hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(135deg, rgba(20, 48, 37, 0.88) 0%, rgba(31, 77, 58, 0.72) 100%);
            z-index: 1;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            text-align: left;
            max-width: 760px;
        }

        .page-hero-kicker {
            display: inline-block;
            background: rgba(201, 162, 39, 0.2);
            color: var(--brand-secondary);
            border: 1px solid rgba(201, 162, 39, 0.4);
            border-radius: 20px;
            padding: 4px 16px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.08em;
            margin-bottom: 20px;
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.2;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .page-hero p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 0;
            max-width: 640px;
        }

        .page-hero-breadcrumb {
            margin-top: 28px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
        }

        .page-hero-breadcrumb a {
            color: rgba(255, 255, 255, 0.7);
            transition: color .2s ease;
        }

        .page-hero-breadcrumb a:hover {
            color: var(--brand-secondary);
        }

        .page-hero-breadcrumb i {
            font-size: 10px;
            color: rgba(255, 255, 255, 0.5);
        }

        /* ============ Section Common ============ */
        .section-padding {
            padding: var(--section-space) 0;
        }

        .section-head {
            margin-bottom: 48px;
            text-align: center;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.01em;
            margin-bottom: 12px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
        }

        /* ============ Security Feature Blocks (Alternating) ============ */
        .security-features {
            padding: var(--section-space) 0 60px;
            background: var(--bg);
        }

        .security-row-item {
            margin-bottom: 80px;
        }

        .security-row-item:last-child {
            margin-bottom: 0;
        }

        .security-img-wrap {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .security-img-wrap img {
            display: block;
            width: 100%;
            height: 280px;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .security-img-wrap:hover img {
            transform: scale(1.02);
        }

        .security-info {
            padding: 20px 10px;
        }

        .security-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 56px;
            height: 56px;
            background: rgba(31, 77, 58, 0.08);
            border-radius: 14px;
            color: var(--brand-primary);
            font-size: 22px;
            margin-bottom: 20px;
        }

        .security-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
        }

        .security-info p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-muted);
            margin-bottom: 16px;
            max-width: 460px;
        }

        .security-info .security-tag {
            display: inline-block;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-primary);
            margin-right: 8px;
            margin-bottom: 8px;
        }

        /* ============ Security Guarantee / Data ============ */
        .security-guarantee {
            background: var(--brand-primary-dark);
            padding: var(--section-space) 0;
            position: relative;
            overflow: hidden;
        }

        .security-guarantee::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(201, 162, 39, 0.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .security-guarantee .section-head h2 {
            color: #fff;
        }

        .security-guarantee .section-head p {
            color: rgba(255, 255, 255, 0.75);
        }

        .guarantee-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 32px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .guarantee-item:last-child {
            border-bottom: none;
        }

        .guarantee-num {
            font-size: 32px;
            font-weight: 800;
            color: var(--brand-secondary);
            line-height: 1.2;
            min-width: 56px;
            letter-spacing: -0.02em;
        }

        .guarantee-item h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .guarantee-item p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 0;
            max-width: 640px;
        }

        .guarantee-stats {
            display: flex;
            justify-content: center;
            gap: 60px;
            margin-top: 56px;
            text-align: center;
            flex-wrap: wrap;
        }

        .guarantee-stats .stat-item {
            padding: 0 10px;
        }

        .guarantee-stats .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--brand-secondary);
            line-height: 1.1;
            font-variant-numeric: tabular-nums;
        }

        .guarantee-stats .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* ============ FAQ ============ */
        .security-faq {
            padding: var(--section-space) 0;
            background: var(--bg);
        }

        .security-faq .container {
            max-width: 800px;
        }

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

        .accordion-item {
            border: 1px solid var(--border);
            border-radius: 12px !important;
            margin-bottom: 16px;
            background: var(--surface);
            overflow: hidden;
        }

        .accordion-item:not(:first-of-type) {
            border-top: 1px solid var(--border);
        }

        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: var(--surface);
            padding: 20px 24px;
            transition: all .2s ease;
        }

        .accordion-button:not(.collapsed) {
            background: rgba(31, 77, 58, 0.04);
            color: var(--brand-primary);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(31, 77, 58, 0.15);
            border-radius: 12px;
        }

        .accordion-button::after {
            background-image: none;
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            content: '\2b';
            font-size: 16px;
            color: var(--brand-primary);
            transition: transform .25s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
        }

        .accordion-button:not(.collapsed)::after {
            background-image: none;
            transform: rotate(45deg);
            color: var(--brand-primary);
        }

        .accordion-body {
            padding: 0 24px 24px;
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-muted);
        }

        /* ============ CTA Section ============ */
        .cta-section {
            padding: 0 0 var(--section-space);
            background: var(--bg);
        }

        .cta-panel {
            background: linear-gradient(135deg, var(--brand-secondary) 0%, #D9B94A 100%);
            border-radius: 20px;
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 200px;
            height: 200px;
            border: 2px solid rgba(255, 255, 255, 0.25);
            border-radius: 50%;
        }

        .cta-panel h2 {
            font-size: 28px;
            font-weight: 800;
            color: #1F2933;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .cta-panel p {
            font-size: 16px;
            color: rgba(31, 41, 51, 0.8);
            margin-bottom: 28px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--brand-primary-dark);
            padding: 56px 0 0;
            color: #C8D1CC;
            min-height: 280px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }

        .footer-logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--brand-secondary);
            color: var(--brand-primary-dark);
            border-radius: 8px;
            font-size: 18px;
            font-weight: 800;
        }

        .footer-brand-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
            margin-bottom: 24px;
        }

        .site-footer h5 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: all .2s ease;
        }

        .footer-links li a:hover {
            color: var(--brand-secondary);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-contact i {
            color: var(--brand-secondary);
            margin-top: 4px;
            font-size: 14px;
            min-width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
        }

        .footer-bottom a:hover {
            color: var(--brand-secondary);
        }

        /* ============ Bottom Fixed Bar ============ */
        .bottom-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: var(--surface);
            border-top: 1px solid var(--border);
            box-shadow: 0 -4px 20px rgba(31, 41, 51, 0.06);
            padding: 10px 0;
            transition: transform .3s ease;
        }

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

        .bottom-bar .bb-text {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            overflow: hidden;
            white-space: nowrap;
            text-overflow: ellipsis;
        }

        .bottom-bar .bb-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .bottom-bar .btn-gold {
            padding: 8px 20px;
            font-size: 14px;
            white-space: nowrap;
        }

        .bottom-bar .bb-close {
            width: 28px;
            height: 28px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: none;
            background: transparent;
            color: var(--text-muted-2);
            border-radius: 6px;
            font-size: 14px;
            cursor: pointer;
            transition: all .2s ease;
        }

        .bottom-bar .bb-close:hover {
            background: var(--bg);
            color: var(--text);
        }

        .bottom-bar.hidden {
            transform: translateY(100%);
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .command-search {
                width: 150px;
            }

            .custom-navbar .nav-link {
                padding: 24px 10px;
                font-size: 14px;
            }

            .custom-navbar .nav-link::after {
                left: 10px;
                right: 10px;
            }

            .nav-actions .btn {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 991px) {
            :root {
                --section-space: 72px;
            }

            .custom-navbar {
                min-height: 64px;
            }

            .custom-navbar .container {
                flex-wrap: wrap;
            }

            .custom-navbar .navbar-collapse {
                background: var(--surface);
                border-radius: 0 0 12px 12px;
                padding: 16px;
                border: 1px solid var(--border);
                margin-top: 8px;
                box-shadow: var(--shadow-md);
            }

            .custom-navbar .navbar-nav {
                gap: 0;
                margin-bottom: 12px;
            }

            .custom-navbar .nav-link {
                padding: 12px 16px;
                border-radius: 8px;
                font-size: 15px;
            }

            .custom-navbar .nav-link::after {
                display: none;
            }

            .custom-navbar .nav-link:hover,
            .custom-navbar .nav-link.active {
                background: rgba(31, 77, 58, 0.06);
                color: var(--brand-primary);
            }

            .custom-navbar .dropdown-menu {
                border: none;
                box-shadow: none;
                background: rgba(31, 77, 58, 0.03);
                padding: 4px;
                margin-top: 0;
            }

            .nav-actions {
                flex-wrap: wrap;
                gap: 8px;
                margin-top: 8px;
            }

            .command-search {
                width: 100%;
                margin-bottom: 8px;
            }

            .nav-actions .btn {
                flex: 1;
            }
        }

        @media (max-width: 768px) {
            .page-hero {
                padding: 80px 0 60px;
            }

            .page-hero h1 {
                font-size: 32px;
                line-height: 1.25;
            }

            .page-hero p {
                font-size: 15px;
                line-height: 1.7;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .security-row-item {
                margin-bottom: 60px;
            }

            .security-info {
                padding: 24px 0 0;
            }

            .security-img-wrap img {
                height: 200px;
            }

            .guarantee-stats {
                gap: 30px;
            }

            .guarantee-stats .stat-num {
                font-size: 32px;
            }

            .cta-panel {
                padding: 40px 24px;
            }

            .cta-panel h2 {
                font-size: 22px;
            }

            .bottom-bar .bb-text {
                font-size: 12px;
                max-width: 140px;
            }

            .bottom-bar .btn-gold {
                padding: 6px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-space: 56px;
            }

            .security-guarantee .section-head p {
                font-size: 14px;
            }

            .guarantee-item {
                gap: 16px;
            }

            .guarantee-num {
                font-size: 24px;
                min-width: 40px;
            }

            .guarantee-item h3 {
                font-size: 18px;
            }

            .guarantee-stats {
                gap: 20px;
                flex-direction: column;
                align-items: center;
            }

            .footer-contact li {
                font-size: 13px;
            }

            .bottom-bar .bb-text {
                max-width: 110px;
            }
        }

        /* Accessibility */
        :focus-visible {
            outline: 3px solid rgba(31, 77, 58, 0.4);
            outline-offset: 2px;
        }

        .accordion-button:not(.collapsed):hover {
            background: rgba(31, 77, 58, 0.06);
        }

        .security-row-item {
            align-items: center;
        }

/* roulang page: category3 */
:root {
            --brand-primary: #1F4D3A;
            --brand-primary-dark: #143025;
            --brand-secondary: #C9A227;
            --brand-secondary-dark: #A8851D;
            --accent: #8C2F39;
            --bg: #FAF8F5;
            --surface: #FFFFFF;
            --text: #1F2933;
            --text-muted: #52606D;
            --text-muted-2: #9AA5B1;
            --border: #E8E2D9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 2px rgba(31, 41, 51, 0.06);
            --shadow-md: 0 4px 16px rgba(31, 41, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(31, 41, 51, 0.12);
            --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
            font-variant-numeric: tabular-nums;
            padding-bottom: 80px;
        }
        a {
            text-decoration: none;
            color: var(--text-muted);
            transition: all 0.2s ease;
        }
        a:hover {
            color: var(--brand-primary);
        }
        img {
            max-width: 100%;
        }
        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            body {
                padding-bottom: 64px;
            }
        }
        .btn {
            border-radius: 10px;
            padding: 12px 24px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.2s ease;
            border: none;
        }
        .btn-gold {
            background: var(--brand-secondary);
            color: #1F2933;
        }
        .btn-gold:hover {
            background: var(--brand-secondary-dark);
            color: #1F2933;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-green {
            background: var(--brand-primary);
            color: #fff;
        }
        .btn-green:hover {
            background: var(--brand-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
        }
        .btn-outline-custom:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: transparent;
        }
        .btn-light-custom {
            background: #fff;
            color: var(--brand-primary);
        }
        .btn-light-custom:hover {
            background: #f0f0f0;
            color: var(--brand-primary-dark);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .section-kicker {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--brand-secondary-dark);
            background: rgba(201, 162, 39, 0.1);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            border: 1px solid rgba(201, 162, 39, 0.2);
        }
        .section-header {
            margin-bottom: 48px;
            max-width: 680px;
        }
        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: var(--text);
            margin-bottom: 12px;
        }
        .section-header p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .section-header.light h2 {
            color: #fff;
        }
        .section-header.light p {
            color: rgba(255, 255, 255, 0.75);
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 24px;
            }
        }

        /* Navbar */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
        }
        .custom-navbar {
            background: rgba(250, 248, 245, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            min-height: 72px;
            padding-top: 0;
            padding-bottom: 0;
        }
        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            padding: 0;
            margin-right: 24px;
            white-space: nowrap;
        }
        .custom-navbar .brand-icon {
            width: 32px;
            height: 32px;
            background: var(--brand-primary);
            color: var(--brand-secondary);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .custom-navbar .brand-text {
            font-size: 20px;
            font-weight: 800;
            letter-spacing: -0.01em;
        }
        .custom-navbar .brand-pill {
            font-size: 11px;
            font-weight: 700;
            background: rgba(201, 162, 39, 0.12);
            color: #A8851D;
            padding: 3px 10px;
            border-radius: 999px;
            border: 1px solid rgba(201, 162, 39, 0.3);
            letter-spacing: 0.02em;
        }
        .custom-navbar .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 20px 16px;
            position: relative;
        }
        .custom-navbar .nav-link:hover {
            color: var(--text);
        }
        .custom-navbar .nav-link::after {
            content: "";
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 10px;
            height: 2px;
            background: var(--brand-primary);
            border-radius: 2px;
            opacity: 0;
            transform: scaleX(0.6);
            transition: all 0.25s ease;
        }
        .custom-navbar .nav-link:hover::after,
        .custom-navbar .nav-link.active::after {
            opacity: 1;
            transform: scaleX(1);
        }
        .custom-navbar .nav-link.active {
            color: var(--text);
            font-weight: 600;
        }
        .custom-navbar .dropdown-menu {
            border: 1px solid var(--border);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            padding: 8px;
            background: var(--surface);
            margin-top: 8px;
        }
        .custom-navbar .dropdown-item {
            font-size: 14px;
            padding: 10px 16px;
            border-radius: 8px;
            color: var(--text-muted);
            transition: all 0.2s ease;
        }
        .custom-navbar .dropdown-item:hover {
            background: rgba(31, 77, 58, 0.06);
            color: var(--brand-primary);
        }
        .custom-navbar .dropdown-item.active {
            background: var(--brand-primary);
            color: #fff;
            font-weight: 600;
        }
        .custom-navbar .navbar-toggler {
            border: none;
            padding: 8px 10px;
        }
        .custom-navbar .navbar-toggler:focus {
            box-shadow: none;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            white-space: nowrap;
        }
        .command-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 8px 12px;
            width: 200px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .command-search:focus-within {
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 3px rgba(31, 77, 58, 0.15);
        }
        .command-search i {
            color: var(--text-muted-2);
            font-size: 14px;
        }
        .command-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            width: 100%;
        }
        .command-search input::placeholder {
            color: var(--text-muted-2);
        }
        .command-search kbd {
            font-size: 11px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 4px;
            padding: 2px 6px;
            color: var(--text-muted-2);
            font-family: inherit;
            white-space: nowrap;
        }
        @media (max-width: 991px) {
            .custom-navbar .navbar-collapse {
                background: var(--bg);
                border-top: 1px solid var(--border);
                margin-top: 0;
                padding: 16px 8px;
            }
            .custom-navbar .nav-link {
                padding: 12px 16px;
            }
            .custom-navbar .nav-link::after {
                bottom: 4px;
            }
            .nav-actions {
                padding: 12px 16px 4px;
                flex-wrap: wrap;
            }
            .command-search {
                width: 100%;
            }
        }

        /* Page Banner */
        .cat-banner {
            position: relative;
            background: linear-gradient(90deg, rgba(31, 77, 58, 0.88), rgba(20, 48, 37, 0.82)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            padding: 100px 0;
            color: #fff;
            overflow: hidden;
        }
        .cat-banner::before {
            content: "";
            position: absolute;
            right: -60px;
            top: -80px;
            width: 300px;
            height: 300px;
            border: 1px solid rgba(201, 162, 39, 0.25);
            border-radius: 50%;
        }
        .cat-banner::after {
            content: "";
            position: absolute;
            right: -20px;
            top: -40px;
            width: 200px;
            height: 200px;
            border: 1px solid rgba(201, 162, 39, 0.18);
            border-radius: 50%;
        }
        .cat-banner-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }
        .cat-banner-content .cat-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--brand-secondary);
            border: 1px solid rgba(201, 162, 39, 0.4);
            border-radius: 999px;
            padding: 4px 14px;
            margin-bottom: 20px;
            background: rgba(201, 162, 39, 0.1);
        }
        .cat-banner-content h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 20px;
        }
        .cat-banner-content p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin: 0;
            max-width: 600px;
        }
        @media (max-width: 768px) {
            .cat-banner {
                padding: 64px 0;
            }
            .cat-banner-content h1 {
                font-size: 32px;
            }
            .cat-banner-content p {
                font-size: 15px;
            }
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            background: var(--bg);
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb-wrap .breadcrumb {
            margin: 0;
            font-size: 14px;
        }
        .breadcrumb-wrap .breadcrumb-item a {
            color: var(--text-muted);
        }
        .breadcrumb-wrap .breadcrumb-item a:hover {
            color: var(--brand-primary);
        }
        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--text);
            font-weight: 600;
        }
        .breadcrumb-wrap .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted-2);
        }

        /* Service Directory */
        .service-directory {
            padding: 96px 0;
            background: var(--bg);
        }
        .directory-list {
            border-top: 1px solid var(--border);
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 0 48px;
            box-shadow: var(--shadow-sm);
        }
        .service-row {
            display: flex;
            align-items: center;
            gap: 28px;
            padding: 36px 0;
            border-bottom: 1px solid var(--border);
            transition: background 0.3s ease, transform 0.3s ease;
        }
        .service-row:last-child {
            border-bottom: none;
        }
        .service-row:hover {
            transform: translateX(6px);
        }
        .service-icon {
            width: 60px;
            height: 60px;
            flex-shrink: 0;
            border-radius: var(--radius-md);
            background: var(--brand-primary);
            color: var(--brand-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            transition: transform 0.3s ease, background 0.3s ease;
        }
        .service-row:hover .service-icon {
            transform: scale(1.06);
            background: var(--brand-primary-dark);
        }
        .service-content {
            flex: 1;
            min-width: 0;
        }
        .service-content h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: 6px;
        }
        .service-content p {
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-muted);
            margin: 0;
            max-width: 720px;
        }
        .service-arrow {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted-2);
            font-size: 15px;
            transition: all 0.3s ease;
            background: transparent;
        }
        .service-row:hover .service-arrow {
            background: var(--brand-secondary);
            border-color: var(--brand-secondary);
            color: #1F2933;
            transform: translateX(4px);
        }
        @media (max-width: 768px) {
            .service-directory {
                padding: 64px 0;
            }
            .directory-list {
                padding: 0 20px;
                border-radius: var(--radius-md);
            }
            .service-row {
                flex-wrap: wrap;
                gap: 16px;
                padding: 28px 0;
            }
            .service-icon {
                width: 48px;
                height: 48px;
                font-size: 18px;
            }
            .service-content {
                flex: 1 1 calc(100% - 64px);
            }
            .service-content h3 {
                font-size: 18px;
            }
            .service-content p {
                font-size: 14px;
            }
            .service-arrow {
                display: none;
            }
        }

        /* Process */
        .process-section {
            background: var(--brand-primary-dark);
            padding: 96px 0;
            position: relative;
            overflow: hidden;
        }
        .process-section::before {
            content: "";
            position: absolute;
            left: -100px;
            bottom: -100px;
            width: 350px;
            height: 350px;
            border: 1px solid rgba(201, 162, 39, 0.15);
            border-radius: 50%;
        }
        .process-section .container {
            position: relative;
            z-index: 2;
        }
        .process-step {
            padding: 32px 28px;
            text-align: center;
            color: #fff;
            position: relative;
        }
        .process-step::after {
            content: "";
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 72px;
            background: rgba(255, 255, 255, 0.1);
        }
        .process-step:last-child::after {
            display: none;
        }
        .process-step .step-num {
            display: block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.12em;
            color: var(--brand-secondary);
            margin-bottom: 12px;
        }
        .process-step .step-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(201, 162, 39, 0.15);
            border: 1px solid rgba(201, 162, 39, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--brand-secondary);
            margin: 0 auto 20px;
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }
        .process-step p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            margin: 0;
        }
        @media (max-width: 991px) {
            .process-step::after {
                display: none;
            }
            .process-section {
                padding: 64px 0;
            }
        }

        /* Scenario */
        .scenario-section {
            padding: 96px 0;
            background: var(--bg);
        }
        .scenario-panel {
            display: flex;
            align-items: center;
            gap: 56px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 56px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
        }
        .scenario-text {
            flex: 1;
        }
        .scenario-text h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 16px;
        }
        .scenario-text>p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 28px;
        }
        .scenario-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .scenario-list li {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
        }
        .scenario-list li:last-child {
            border-bottom: none;
        }
        .scenario-list .scenario-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(31, 77, 58, 0.08);
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
            margin-top: 4px;
        }
        .scenario-list .scenario-info {
            flex: 1;
        }
        .scenario-list .scenario-info h3 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 4px;
        }
        .scenario-list .scenario-info p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }
        .scenario-media {
            flex: 1;
            position: relative;
        }
        .scenario-media img {
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-lg);
            width: 100%;
            height: 360px;
            object-fit: cover;
            display: block;
        }
        .scenario-media .media-float {
            position: absolute;
            background: var(--surface);
            border-radius: 10px;
            padding: 12px 18px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
        }
        .scenario-media .media-float i {
            color: var(--brand-primary);
            font-size: 15px;
        }
        .scenario-media .media-float-1 {
            top: 24px;
            left: -20px;
        }
        .scenario-media .media-float-2 {
            bottom: 24px;
            right: -14px;
        }
        @media (max-width: 991px) {
            .scenario-panel {
                flex-direction: column;
                padding: 36px 24px;
                gap: 32px;
            }
            .scenario-media img {
                height: 240px;
            }
            .scenario-media .media-float-1 {
                left: 8px;
                top: 16px;
            }
            .scenario-media .media-float-2 {
                right: 8px;
                bottom: 16px;
            }
            .scenario-section {
                padding: 64px 0;
            }
        }

        /* Advantages */
        .advantage-section {
            padding: 96px 0;
            background: #EEF2EF;
        }
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            overflow: hidden;
        }
        .advantage-item {
            padding: 44px 36px;
            border-right: 1px solid var(--border);
            text-align: center;
            transition: background 0.3s ease;
        }
        .advantage-item:last-child {
            border-right: none;
        }
        .advantage-item:hover {
            background: rgba(31, 77, 58, 0.02);
        }
        .advantage-item .adv-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--brand-secondary);
            display: block;
            margin-bottom: 14px;
            font-variant-numeric: tabular-nums;
        }
        .advantage-item .adv-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--brand-primary);
            color: var(--brand-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin: 0 auto 18px;
        }
        .advantage-item h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .advantage-item p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-muted);
            margin: 0;
        }
        @media (max-width: 991px) {
            .advantage-grid {
                grid-template-columns: 1fr;
            }
            .advantage-item {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding: 32px 28px;
            }
            .advantage-item:last-child {
                border-bottom: none;
            }
            .advantage-section {
                padding: 64px 0;
            }
        }

        /* CTA */
        .cta-section {
            padding: 96px 0 80px;
            background: var(--bg);
        }
        .cta-panel {
            background: linear-gradient(135deg, var(--brand-secondary), #D9B84E);
            border-radius: var(--radius-lg);
            padding: 68px 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-md);
        }
        .cta-panel::before {
            content: "";
            position: absolute;
            top: -40px;
            left: -40px;
            width: 160px;
            height: 160px;
            border: 2px solid rgba(255, 255, 255, 0.2);
            border-radius: 50%;
        }
        .cta-panel::after {
            content: "";
            position: absolute;
            bottom: -60px;
            right: -20px;
            width: 200px;
            height: 200px;
            border: 2px solid rgba(255, 255, 255, 0.15);
            border-radius: 50%;
        }
        .cta-panel h2 {
            font-size: 30px;
            font-weight: 800;
            color: #1F2933;
            margin-bottom: 14px;
            position: relative;
            z-index: 2;
        }
        .cta-panel p {
            font-size: 16px;
            color: #3D3D3D;
            opacity: 0.85;
            margin-bottom: 30px;
            position: relative;
            z-index: 2;
        }
        .cta-panel .cta-buttons {
            position: relative;
            z-index: 2;
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-panel .btn-light-custom {
            background: #fff;
            color: var(--brand-primary);
            border-radius: 10px;
            padding: 12px 32px;
            font-weight: 700;
        }
        .cta-panel .btn-light-custom:hover {
            background: rgba(255, 255, 255, 0.85);
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .cta-panel .btn-outline-dark-custom {
            background: transparent;
            border: 2px solid #1F2933;
            color: #1F2933;
            border-radius: 10px;
            padding: 12px 32px;
            font-weight: 700;
            transition: all 0.2s ease;
        }
        .cta-panel .btn-outline-dark-custom:hover {
            background: #1F2933;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        @media (max-width: 768px) {
            .cta-section {
                padding: 64px 0;
            }
            .cta-panel {
                padding: 44px 24px;
                border-radius: var(--radius-md);
            }
            .cta-panel h2 {
                font-size: 24px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--brand-primary-dark);
            color: #C8D1CC;
            padding-top: 56px;
            min-height: 280px;
        }
        .site-footer h5 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }
        .footer-logo-icon {
            width: 32px;
            height: 32px;
            background: var(--brand-secondary);
            color: var(--brand-primary-dark);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 800;
        }
        .footer-brand-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: #9AA5B1;
            max-width: 280px;
            margin-bottom: 0;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: #C8D1CC;
            font-size: 14px;
            transition: color 0.2s ease;
        }
        .footer-links a:hover {
            color: var(--brand-secondary);
        }
        .footer-contact {
            font-size: 14px;
        }
        .footer-contact .contact-text {
            margin-left: 8px;
            vertical-align: middle;
            color: #C8D1CC;
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            margin-top: 32px;
            font-size: 14px;
            color: #9AA5B1;
            text-align: center;
        }
        .footer-bottom a {
            color: #C8D1CC;
        }
        .footer-bottom a:hover {
            color: var(--brand-secondary);
        }

        /* Floating CTA */
        .floating-cta {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, 0.98);
            border-top: 1px solid var(--border);
            box-shadow: 0 -4px 20px rgba(31, 41, 51, 0.08);
            padding: 10px 0;
            display: none;
        }
        .floating-cta .floating-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }
        .floating-cta .floating-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--text);
        }
        .floating-cta .floating-text i {
            color: var(--brand-secondary-dark);
            margin-right: 6px;
        }
        .floating-cta .floating-close {
            background: none;
            border: none;
            color: var(--text-muted-2);
            font-size: 18px;
            cursor: pointer;
            padding: 4px 8px;
            line-height: 1;
            border-radius: 6px;
        }
        .floating-cta .floating-close:hover {
            background: var(--border);
            color: var(--text);
        }
        @media (max-width: 768px) {
            .floating-cta {
                padding: 8px 0;
            }
            .floating-cta .floating-text {
                font-size: 12px;
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
                flex: 1;
            }
            .floating-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
            }
        }

/* roulang page: category4 */
:root {
            --brand-primary: #1F4D3A;
            --brand-primary-dark: #143025;
            --brand-secondary: #C9A227;
            --brand-secondary-dark: #A8851D;
            --accent: #8C2F39;
            --bg: #FAF8F5;
            --surface: #FFFFFF;
            --text: #1F2933;
            --text-muted: #52606D;
            --text-muted-2: #9AA5B1;
            --border: #E8E2D9;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 16px;
            --shadow-sm: 0 1px 2px rgba(31, 41, 51, 0.06);
            --shadow-md: 0 4px 16px rgba(31, 41, 51, 0.08);
            --shadow-lg: 0 12px 32px rgba(31, 41, 51, 0.12);
            --transition: 0.2s ease;
            --container-max: 1200px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            padding-bottom: 80px;
        }
        body.modal-open,
        body.menu-open {
            overflow: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            color: var(--text-muted);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--brand-primary);
        }
        .container {
            max-width: var(--container-max);
            padding-left: 24px;
            padding-right: 24px;
        }
        @media (max-width: 576px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }
        /* ── 导航 ── */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(250, 248, 245, 0.92);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .custom-navbar {
            height: 72px;
            padding: 0;
        }
        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
        }
        .brand-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-primary);
            color: var(--brand-secondary);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .brand-text {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.01em;
            line-height: 1;
        }
        .brand-pill {
            font-size: 12px;
            font-weight: 600;
            color: var(--brand-secondary);
            background: rgba(201, 162, 39, 0.1);
            border: 1px solid rgba(201, 162, 39, 0.35);
            border-radius: 999px;
            padding: 3px 12px;
            line-height: 1.4;
            white-space: nowrap;
        }
        .custom-navbar .navbar-nav {
            gap: 0;
        }
        .custom-navbar .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 14px !important;
            position: relative;
            border-radius: 6px;
        }
        .custom-navbar .nav-link::after {
            content: '';
            position: absolute;
            left: 14px;
            right: 14px;
            bottom: 2px;
            height: 2px;
            background: var(--brand-primary);
            border-radius: 2px;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.25s ease;
        }
        .custom-navbar .nav-link:hover {
            color: var(--brand-primary);
        }
        .custom-navbar .nav-link:hover::after,
        .custom-navbar .nav-link.active::after {
            transform: scaleX(1);
        }
        .custom-navbar .nav-link.active {
            color: var(--text);
            font-weight: 600;
        }
        .custom-navbar .dropdown-menu {
            border: 1px solid var(--border);
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            background: var(--surface);
            padding: 8px;
            min-width: 200px;
            margin-top: 6px;
        }
        .custom-navbar .dropdown-item {
            border-radius: 8px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 9px 14px;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .custom-navbar .dropdown-item:hover {
            background: rgba(31, 77, 58, 0.06);
            color: var(--brand-primary);
        }
        .custom-navbar .dropdown-item.active {
            background: rgba(31, 77, 58, 0.08);
            color: var(--brand-primary);
            font-weight: 600;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .command-search {
            display: flex;
            align-items: center;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: 6px 12px;
            gap: 8px;
            width: 200px;
            transition: border-color 0.2s ease, box-shadow 0.2s ease;
        }
        .command-search:focus-within {
            border-color: rgba(31, 77, 58, 0.4);
            box-shadow: 0 0 0 3px rgba(31, 77, 58, 0.08);
        }
        .command-search i {
            color: var(--text-muted-2);
            font-size: 14px;
        }
        .command-search input {
            border: none;
            outline: none;
            background: transparent;
            font-size: 14px;
            color: var(--text);
            width: 100%;
        }
        .command-search input::placeholder {
            color: var(--text-muted-2);
        }
        .command-search kbd {
            font-family: "Helvetica Neue", Arial, sans-serif;
            font-size: 11px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 4px;
            padding: 2px 6px;
            color: var(--text-muted-2);
            line-height: 1.4;
            white-space: nowrap;
        }
        .navbar-toggler {
            border: none;
            padding: 6px 8px;
            background: transparent;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='%231F2933' stroke-width='2' stroke-linecap='round' stroke-miterlimit='10' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
        }
        @media (max-width: 991px) {
            .custom-navbar .navbar-collapse {
                background: var(--bg);
                border: 1px solid var(--border);
                border-radius: 16px;
                padding: 16px;
                margin-top: 8px;
                box-shadow: var(--shadow-lg);
            }
            .custom-navbar .navbar-nav {
                margin: 0 !important;
                gap: 4px;
            }
            .custom-navbar .nav-link {
                padding: 10px 12px !important;
            }
            .nav-actions {
                margin-top: 12px;
                flex-wrap: wrap;
            }
            .command-search {
                width: 100%;
            }
        }
        @media (max-width: 576px) {
            .brand-pill {
                display: none;
            }
            .brand-text {
                font-size: 17px;
            }
            .brand-icon {
                width: 28px;
                height: 28px;
                font-size: 16px;
            }
        }
        /* ── 按钮 ── */
        .btn {
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 24px;
            border: 1px solid transparent;
            transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            line-height: 1.4;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(31, 77, 58, 0.25);
            outline-offset: 2px;
        }
        .btn-gold {
            background: var(--brand-secondary);
            color: #1F2933;
            border-color: var(--brand-secondary);
            font-weight: 600;
        }
        .btn-gold:hover {
            background: var(--brand-secondary-dark);
            border-color: var(--brand-secondary-dark);
            color: #1F2933;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-gold:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-green {
            background: var(--brand-primary);
            color: #fff;
            border-color: var(--brand-primary);
            font-weight: 600;
        }
        .btn-green:hover {
            background: var(--brand-primary-dark);
            border-color: var(--brand-primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }
        .btn-green:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline-custom {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text);
            font-weight: 500;
        }
        .btn-outline-custom:hover {
            border-color: var(--brand-primary);
            color: var(--brand-primary);
            background: rgba(31, 77, 58, 0.04);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.6);
            color: #fff;
        }
        .btn-outline-light:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .btn-sm-custom {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }
        /* ── Hero ── */
        .cat4-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(20, 48, 37, 0.88) 0%, rgba(31, 77, 58, 0.78) 100%);
            background-size: cover;
            background-position: center;
            padding: 96px 0 80px;
            color: #fff;
            overflow: hidden;
        }
        .cat4-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            opacity: 0.35;
            z-index: 0;
        }
        .cat4-hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(20, 48, 37, 0.3) 0%, rgba(20, 48, 37, 0.15) 100%);
            z-index: 1;
            pointer-events: none;
        }
        .cat4-hero .container {
            position: relative;
            z-index: 2;
        }
        .cat4-hero-content {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
        }
        .cat4-kicker {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--brand-secondary);
            background: rgba(201, 162, 39, 0.12);
            border: 1px solid rgba(201, 162, 39, 0.3);
            border-radius: 999px;
            padding: 5px 16px;
            margin-bottom: 20px;
        }
        .cat4-hero h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin: 0 0 18px;
            color: #fff;
        }
        .cat4-hero .lead {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto;
        }
        .cat4-quick-nav {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
            margin-top: 36px;
        }
        .quick-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.8);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 999px;
            padding: 7px 18px;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .quick-tag:hover {
            background: rgba(201, 162, 39, 0.2);
            border-color: rgba(201, 162, 39, 0.4);
            color: #fff;
        }
        @media (max-width: 768px) {
            .cat4-hero {
                padding: 72px 0 64px;
            }
            .cat4-hero h1 {
                font-size: 32px;
            }
            .cat4-hero .lead {
                font-size: 15px;
            }
            .cat4-quick-nav {
                margin-top: 28px;
                gap: 8px;
            }
            .quick-tag {
                font-size: 13px;
                padding: 6px 14px;
            }
        }
        /* ── 板块通用 ── */
        .section-block {
            padding: 96px 0;
        }
        .section-block-alt {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin: 0 0 12px;
            color: var(--text);
        }
        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            margin: 0;
        }
        .section-head .subtitle-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-primary);
            background: rgba(31, 77, 58, 0.06);
            border-radius: 999px;
            padding: 5px 14px;
            margin-bottom: 16px;
        }
        @media (max-width: 768px) {
            .section-block {
                padding: 64px 0;
            }
            .section-head {
                margin-bottom: 36px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .section-head p {
                font-size: 15px;
            }
        }
        /* ── FAQ 手风琴 ── */
        .cat4-faq {
            padding: 96px 0 72px;
            background: var(--bg);
        }
        .cat4-faq .section-head {
            margin-bottom: 40px;
        }
        .faq-col-title {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 22px;
        }
        .faq-col-title i {
            color: var(--brand-secondary);
            font-size: 20px;
        }
        .custom-accordion .accordion-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 14px;
            box-shadow: var(--shadow-sm);
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
            overflow: hidden;
        }
        .custom-accordion .accordion-item:last-child {
            margin-bottom: 0;
        }
        .custom-accordion .accordion-item:hover {
            border-color: rgba(31, 77, 58, 0.35);
        }
        .custom-accordion .accordion-button {
            background: transparent;
            box-shadow: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 18px 20px;
            border-radius: 12px;
            transition: background 0.2s ease, color 0.2s ease;
        }
        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--brand-primary);
            background: rgba(31, 77, 58, 0.03);
            border-bottom: 1px solid rgba(31, 77, 58, 0.08);
        }
        .custom-accordion .accordion-button:focus {
            box-shadow: none;
            outline: 3px solid rgba(31, 77, 58, 0.12);
            outline-offset: -2px;
        }
        .custom-accordion .accordion-button::after {
            background-image: none;
            content: '+';
            font-size: 24px;
            font-weight: 300;
            color: var(--brand-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            transition: transform 0.3s ease;
            line-height: 1;
            font-family: Arial, sans-serif;
        }
        .custom-accordion .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }
        .custom-accordion .accordion-body {
            padding: 14px 20px 18px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }
        .custom-accordion .accordion-body a {
            color: var(--brand-primary);
            font-weight: 500;
            border-bottom: 1px solid rgba(31, 77, 58, 0.3);
            transition: border-color 0.2s ease;
        }
        .custom-accordion .accordion-body a:hover {
            border-bottom-color: var(--brand-primary);
        }
        @media (max-width: 576px) {
            .custom-accordion .accordion-button {
                font-size: 15px;
                padding: 16px 16px;
            }
            .custom-accordion .accordion-body {
                font-size: 14px;
                padding: 12px 16px 16px;
            }
        }
        @media (max-width: 991px) {
            .faq-col-right {
                margin-top: 12px;
            }
        }
        /* ── 联系卡 ── */
        .cat4-contact {
            padding: 72px 0 96px;
            background: var(--surface);
        }
        .cat4-contact-card {
            background: linear-gradient(135deg, var(--brand-primary-dark) 0%, var(--brand-primary) 100%);
            border-radius: 20px;
            padding: 52px 56px;
            color: #fff;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .cat4-contact-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -40px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            background: rgba(201, 162, 39, 0.10);
        }
        .cat4-contact-card h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .cat4-contact-card p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            max-width: 480px;
        }
        .contact-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .contact-img-wrap {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        .contact-img-wrap img {
            width: 100%;
            display: block;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .cat4-note {
            display: flex;
            align-items: center;
            gap: 10px;
            background: rgba(140, 47, 57, 0.04);
            border: 1px solid rgba(140, 47, 57, 0.12);
            border-radius: 12px;
            padding: 14px 18px;
            margin-top: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .cat4-note i {
            color: var(--accent);
            font-size: 18px;
            flex-shrink: 0;
        }
        @media (max-width: 768px) {
            .cat4-contact {
                padding: 56px 0 72px;
            }
            .cat4-contact-card {
                padding: 32px 24px;
            }
            .cat4-contact-card h2 {
                font-size: 24px;
            }
            .contact-img-wrap {
                margin-top: 28px;
            }
            .cat4-note {
                font-size: 13px;
            }
        }
        /* ── 其他分类指引 ── */
        .cat4-guide {
            padding: 96px 0;
            background: var(--bg);
        }
        .cat4-guide .section-head {
            margin-bottom: 40px;
        }
        .cat4-guide-link {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 28px 30px;
            transition: all 0.25s ease;
            margin-bottom: 16px;
            position: relative;
        }
        .cat4-guide-link:hover {
            border-color: rgba(31, 77, 58, 0.3);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .cat4-guide-link:hover .guide-arrow {
            color: var(--brand-primary);
            transform: translateX(4px);
        }
        .guide-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(31, 77, 58, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--brand-primary);
            flex-shrink: 0;
        }
        .cat4-guide-link:nth-child(even) .guide-icon {
            background: rgba(201, 162, 39, 0.12);
            color: var(--brand-secondary);
        }
        .cat4-guide-link h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 4px;
            color: var(--text);
        }
        .cat4-guide-link p {
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }
        .guide-arrow {
            margin-left: auto;
            font-size: 18px;
            color: var(--text-muted-2);
            transition: transform 0.2s ease, color 0.2s ease;
        }
        .cat4-guide-banner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: var(--brand-primary);
            border-radius: 16px;
            padding: 24px 32px;
            color: #fff;
            transition: background 0.25s ease, transform 0.25s ease;
            margin-top: 8px;
        }
        .cat4-guide-banner:hover {
            background: var(--brand-primary-dark);
            color: #fff;
            transform: translateY(-2px);
        }
        .cat4-guide-banner .banner-title {
            font-size: 18px;
            font-weight: 700;
        }
        .cat4-guide-banner .banner-text {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.8);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        @media (max-width: 768px) {
            .cat4-guide {
                padding: 64px 0;
            }
            .cat4-guide-link {
                padding: 22px 20px;
                gap: 14px;
            }
            .guide-icon {
                width: 44px;
                height: 44px;
                font-size: 18px;
            }
            .cat4-guide-banner {
                padding: 20px;
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
        }
        /* ── 页脚 ── */
        .site-footer {
            background: var(--brand-primary-dark);
            padding: 56px 0 0;
            color: #C8D1CC;
            min-height: 280px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }
        .footer-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--brand-secondary);
            color: var(--brand-primary-dark);
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .footer-brand-text {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            line-height: 1;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.65);
            max-width: 320px;
            margin-bottom: 20px;
        }
        .site-footer h5 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color 0.2s ease, padding-left 0.2s ease;
            padding-left: 0;
            display: inline-block;
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-contact i {
            width: 18px;
            text-align: center;
            color: var(--brand-secondary);
            flex-shrink: 0;
        }
        .footer-contact .contact-text {
            line-height: 1.5;
        }
        .footer-bottom {
            margin-top: 36px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-bottom a:hover {
            color: #fff;
        }
        @media (max-width: 768px) {
            .site-footer {
                padding-top: 40px;
            }
            .footer-bottom {
                margin-top: 24px;
                padding: 18px 0;
                font-size: 12px;
            }
        }
        /* ── 底部转化条 ── */
        .site-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1030;
            background: #fff;
            border-top: 1px solid var(--border);
            box-shadow: 0 -4px 20px rgba(31, 41, 51, 0.06);
            padding: 12px 0;
            transform: translateY(0);
            transition: transform 0.3s ease;
        }
        .site-sticky-bar.hidden {
            transform: translateY(100%);
        }
        .site-sticky-bar .sticky-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .site-sticky-bar .sticky-text {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .site-sticky-bar .sticky-text i {
            color: var(--brand-secondary);
        }
        .site-sticky-bar .sticky-close {
            border: none;
            background: none;
            color: var(--text-muted-2);
            font-size: 20px;
            line-height: 1;
            cursor: pointer;
            padding: 4px;
            transition: color 0.2s ease;
        }
        .site-sticky-bar .sticky-close:hover {
            color: var(--accent);
        }
        @media (max-width: 576px) {
            .site-sticky-bar {
                padding: 10px 0;
            }
            .site-sticky-bar .sticky-text span {
                font-size: 13px;
            }
            .site-sticky-bar .btn-gold {
                padding: 8px 16px;
                font-size: 14px;
            }
        }
        /* ── 返回顶部 ── */
        .back-to-top {
            position: fixed;
            right: 24px;
            bottom: 96px;
            z-index: 1040;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--brand-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            border: none;
            font-size: 18px;
            box-shadow: var(--shadow-md);
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.2s ease;
            cursor: pointer;
        }
        .back-to-top.show {
            opacity: 1;
            visibility: visible;
        }
        .back-to-top:hover {
            background: var(--brand-primary-dark);
            transform: translateY(-2px);
        }