/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #E85D04;
  --primary-hover: #C94F02;
  --primary-light: #FEF0E7;
  --dark: #1B1E23;
  --dark-2: #252A31;
  --green: #2B9348;
  --green-light: #E6F4EA;
  --yellow: #FFC300;
  --bg-warm: #FAF9F6;
  --white: #FFFFFF;
  --text-main: #2B2D31;
  --text-sub: #6B7280;
  --border: #E9E6E0;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(27,30,35,.06);
  --shadow-md: 0 12px 24px rgba(27,30,35,.10);
  --shadow-nav: 0 4px 24px rgba(27,30,35,.12);
  --font-sans: "PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-num: "DIN Alternate","Barlow Condensed",sans-serif;
}
/* ===== Reset / 基础 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-main);
  background: var(--bg-warm);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-hover); text-decoration: underline; }
a:focus-visible { outline: 3px solid rgba(232,93,4,.25); outline-offset: 2px; border-radius: 4px; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 15px; }
section { position: relative; }

/* ===== 通用布局 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section-block { padding: 88px 0; }
.section-block--white { background: var(--white); }
.section-block--warm { background: var(--bg-warm); }
.section-head { margin-bottom: 48px; }
.section-head .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 12px;
}
.section-head p { color: var(--text-sub); font-size: 16px; max-width: 640px; }
.section-head.center { text-align: center; }
.section-head.center p { margin: 0 auto; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  border: none;
  transition: all .25s ease;
  text-decoration: none !important;
  white-space: nowrap;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(232,93,4,.25); }
.btn-primary:hover { background: var(--primary-hover); color: #fff; transform: scale(1.02); box-shadow: 0 8px 20px rgba(232,93,4,.3); }
.btn-primary:active { background: #A64302; transform: scale(.98) translateY(1px); box-shadow: 0 2px 6px rgba(232,93,4,.25); }
.btn-primary:focus-visible { outline: 3px solid rgba(232,93,4,.3); outline-offset: 2px; }
.btn-secondary { background: transparent; color: var(--primary); border: 1px solid var(--primary); }
.btn-secondary:hover { background: var(--primary-light); color: var(--primary-hover); transform: translateY(-1px); }
.btn-secondary:active { background: rgba(232,93,4,.15); transform: translateY(0); }
.btn-dark { background: var(--dark); color: #fff; }
.btn-dark:hover { background: var(--dark-2); color: #fff; transform: scale(1.02); }
.btn-yellow { background: var(--yellow); color: var(--dark); box-shadow: 0 4px 16px rgba(255,195,0,.35); }
.btn-yellow:hover { background: #FFD54B; color: var(--dark); transform: scale(1.02); }
.btn-lg { padding: 18px 36px; font-size: 17px; }
.btn-block { width: 100%; justify-content: center; }

/* ===== 导航胶囊 ===== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: 1160px;
  background: rgba(27,30,35,.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 999px;
  box-shadow: var(--shadow-nav);
  padding: 0 20px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: height .3s, background .3s;
}
.site-nav.scrolled { height: 56px; }
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none !important;
}
.nav-logo-icon {
  width: 40px;
  height: 40px;
  background: var(--primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  flex-shrink: 0;
  transform: rotate(-8deg);
  box-shadow: 0 4px 10px rgba(232,93,4,.3);
}
.nav-logo-text { color: #fff; font-size: 20px; font-weight: 800; letter-spacing: .5px; line-height: 1.2; }
.nav-logo-text span { color: var(--yellow); }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  color: rgba(255,255,255,.82);
  font-size: 15px;
  font-weight: 500;
  padding: 10px 18px;
  border-radius: 999px;
  text-decoration: none;
  transition: all .25s;
  white-space: nowrap;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,.08); }
.nav-links a.active { color: var(--primary); background: rgba(232,93,4,.15); font-weight: 600; }
.nav-cta { margin-left: 12px; }
.nav-cta .btn { padding: 10px 22px; font-size: 14px; }
.nav-burger {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 24px;
  padding: 8px;
  border-radius: 8px;
  line-height: 1;
}
.nav-burger:focus-visible { outline: 3px solid rgba(255,255,255,.3); }
.mobile-drawer {
  position: fixed;
  top: 12px;
  right: 12px;
  width: 280px;
  background: var(--dark);
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  padding: 24px;
  z-index: 1100;
  transform: translateX(320px);
  transition: transform .35s ease;
  display: block;
}
.mobile-drawer.open { transform: translateX(0); }
.mobile-drawer a {
  display: block;
  color: rgba(255,255,255,.85);
  padding: 14px 10px;
  font-size: 16px;
  font-weight: 500;
  border-radius: 10px;
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.mobile-drawer a:hover { background: rgba(255,255,255,.06); color: #fff; }
.mobile-drawer a.active { color: var(--primary); background: rgba(232,93,4,.12); }
.mobile-drawer .drawer-cta { margin-top: 18px; }
.mobile-drawer .btn { width: 100%; justify-content: center; }
.drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.4);
  z-index: 1050;
  opacity: 0;
  visibility: hidden;
  transition: opacity .3s;
}
.drawer-overlay.show { opacity: 1; visibility: visible; }

/* ===== Hero ===== */
.hero {
  min-height: 640px;
  display: flex;
  align-items: center;
  background: linear-gradient(90deg, rgba(27,30,35,.94) 0%, rgba(27,30,35,.72) 45%, rgba(27,30,35,.45) 100%), url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  padding: 140px 0 80px;
  position: relative;
  overflow: hidden;
}
.hero-deco-line {
  position: absolute;
  height: 1px;
  background: rgba(255,255,255,.1);
  transform-origin: left center;
  pointer-events: none;
}
.hero-deco-line.l1 { width: 600px; bottom: 60px; left: -60px; transform: rotate(8deg); }
.hero-deco-line.l2 { width: 450px; bottom: 30px; left: 40px; transform: rotate(10deg); }
.hero-deco-line.l3 { width: 300px; bottom: 10px; left: 140px; transform: rotate(14deg); }
.hero-content { padding-right: 20px; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.12);
  border: 1px solid rgba(255,255,255,.2);
  color: #FFD54B;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.22;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: .5px;
}
.hero-sub {
  font-size: 18px;
  color: rgba(255,255,255,.78);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 36px;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-visual { position: relative; }
.hero-img-wrap {
  border-radius: var(--radius);
  border: 12px solid rgba(255,255,255,.92);
  box-shadow: 0 20px 50px rgba(0,0,0,.35);
  overflow: hidden;
}
.hero-img-wrap img { width: 100%; height: auto; border-radius: 4px; }
.hero-float {
  position: absolute;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(8px);
  border-radius: 999px;
  padding: 14px 22px;
  box-shadow: 0 8px 24px rgba(0,0,0,.18);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  animation: floatY 3s ease-in-out infinite alternate;
}
.hero-float .num {
  font-family: var(--font-num);
  font-size: 28px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1;
}
.hero-float.f1 { top: 24px; left: -30px; }
.hero-float.f2 { bottom: 40px; right: -20px; animation-delay: 1.5s; }
.hero-float .icon { width: 36px; height: 36px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.hero-float .icon.orange { background: var(--primary-light); color: var(--primary); }
.hero-float .icon.green { background: var(--green-light); color: var(--green); }
@keyframes floatY {
  0% { transform: translateY(0); }
  100% { transform: translateY(-10px); }
}

/* ===== 优惠阶梯 ===== */
.tier-grid { display: flex; gap: 24px; align-items: stretch; }
.tier-card {
  flex: 1;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}
.tier-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.tier-card--featured {
  border: 2px solid var(--primary);
  transform: translateY(-16px);
  box-shadow: 0 16px 32px rgba(232,93,4,.12);
}
.tier-card--featured:hover { transform: translateY(-20px); box-shadow: 0 20px 40px rgba(232,93,4,.18); }
.tier-card--dark { background: var(--dark); border-color: var(--dark); color: #fff; }
.tier-card--dark .tier-desc { color: rgba(255,255,255,.65); }
.tier-card--dark .tier-feature li { color: rgba(255,255,255,.85); }
.tier-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--bg-warm);
  color: var(--text-sub);
  margin-bottom: 16px;
}
.tier-card--featured .tier-label { background: var(--primary); color: #fff; }
.tier-card--dark .tier-label { background: rgba(255,255,255,.12); color: #FFD54B; }
.tier-badge {
  position: absolute;
  top: -14px;
  right: 24px;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 999px;
  box-shadow: 0 4px 10px rgba(232,93,4,.3);
}
.tier-card h3 { font-size: 22px; font-weight: 700; margin-bottom: 6px; }
.tier-desc { font-size: 14px; color: var(--text-sub); margin-bottom: 24px; min-height: 42px; }
.tier-feature { margin-bottom: 28px; }
.tier-feature li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--text-main);
  padding: 8px 0;
  border-bottom: 1px dashed var(--border);
}
.tier-card--dark .tier-feature li { border-bottom-color: rgba(255,255,255,.08); color: rgba(255,255,255,.85); }
.tier-feature li:last-child { border-bottom: none; }
.tier-feature .check { color: var(--green); font-size: 13px; }
.tier-feature .star { color: var(--primary); font-size: 13px; }
.tier-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  transition: gap .2s;
}
.tier-link:hover { gap: 10px; color: var(--primary-hover); text-decoration: none; }
.tier-card--dark .tier-link { color: var(--yellow); }

/* ===== 套餐对比 ===== */
.compare-wrap { overflow-x: auto; }
.compare-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  min-width: 760px;
}
.compare-table th, .compare-table td {
  padding: 22px 20px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
}
.compare-table thead th { background: var(--bg-warm); color: var(--text-sub); font-size: 14px; font-weight: 600; }
.compare-table thead th.col-plan { background: transparent; padding: 0; }
.compare-table th.col-feature { text-align: left; color: var(--text-sub); font-size: 14px; font-weight: 600; }
.compare-table td.col-feature { text-align: left; color: var(--text-main); font-weight: 500; }
.compare-table tr:last-child td { border-bottom: none; }
.compare-table .plan-cell {
  background: var(--white);
  padding: 32px 20px;
  position: relative;
  border-left: 1px solid var(--border);
  border-right: 1px solid var(--border);
}
.compare-table .plan-cell.recommend {
  background: rgba(232,93,4,.04);
  border-left: 2px solid var(--primary);
  border-right: 2px solid var(--primary);
  border-top: 2px solid var(--primary);
  border-radius: var(--radius) var(--radius) 0 0;
}
.compare-table .plan-recommend-badge {
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 16px;
  border-radius: 0 0 10px 10px;
  white-space: nowrap;
}
.compare-table .plan-name { font-size: 20px; font-weight: 700; color: var(--text-main); margin-bottom: 6px; }
.compare-table .plan-desc { font-size: 13px; color: var(--text-sub); }
.compare-table .check-ok { color: var(--green); font-size: 18px; }
.compare-table .check-no { color: #D1D5DB; font-size: 18px; }
.compare-table .table-cta { padding: 28px 20px; background: var(--bg-warm); }
.compare-table .table-cta.recommend { background: rgba(232,93,4,.04); }

/* ===== 限时入口 ===== */
.flash-sale {
  background: linear-gradient(135deg, rgba(232,93,4,.15) 0%, transparent 50%), var(--dark);
  position: relative;
  overflow: hidden;
  padding: 80px 0;
}
.flash-sale::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: repeating-linear-gradient(-45deg, transparent 0px, transparent 12px, rgba(232,93,4,.08) 12px, rgba(232,93,4,.08) 14px);
  pointer-events: none;
}
.flash-content { text-align: center; position: relative; z-index: 2; }
.flash-content .sub-label {
  color: var(--yellow);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.flash-content h2 { color: #fff; font-size: 34px; font-weight: 800; margin-bottom: 16px; }
.flash-content .desc { color: rgba(255,255,255,.72); font-size: 16px; max-width: 540px; margin: 0 auto 40px; }
.countdown { display: flex; justify-content: center; gap: 20px; margin-bottom: 40px; }
.countdown-item {
  min-width: 90px;
  background: rgba(255,255,255,.06);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 14px;
  padding: 16px 10px 12px;
}
.countdown-item .num {
  font-family: var(--font-num);
  font-size: 48px;
  font-weight: 700;
  color: var(--yellow);
  line-height: 1;
  display: block;
  animation: pulseNum 1.6s ease-in-out infinite;
}
.countdown-item .label { font-size: 13px; color: rgba(255,255,255,.5); margin-top: 8px; display: block; }
.countdown-sep { font-size: 32px; color: rgba(255,255,255,.3); align-self: center; padding-bottom: 18px; }
@keyframes pulseNum {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: .8; transform: scale(1.03); }
}

/* ===== 最新资讯 ===== */
.news-grid { display: flex; flex-wrap: wrap; gap: 24px; }
.news-card {
  flex: 1 1 calc(33.333% - 16px);
  min-width: 280px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.news-thumb { width: 100%; height: 180px; overflow: hidden; background: var(--bg-warm); }
.news-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-card:hover .news-thumb img { transform: scale(1.04); }
.news-body { padding: 24px 22px 20px; }
.news-cat {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.news-card h3 { font-size: 17px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; }
.news-card h3 a { color: var(--text-main); text-decoration: none; }
.news-card h3 a:hover { color: var(--primary); }
.news-excerpt {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 16px;
}
.news-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-sub);
  border-top: 1px solid var(--bg-warm);
  padding-top: 16px;
}
.news-meta .date { display: flex; align-items: center; gap: 6px; }
.news-meta .read-link { color: var(--primary); font-weight: 600; font-size: 14px; text-decoration: none; }
.news-meta .read-link:hover { color: var(--primary-hover); }
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--text-sub);
  font-size: 14px;
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
}
.empty-state i { font-size: 36px; color: #D1D5DB; display: block; margin-bottom: 12px; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition: color .2s;
}
.faq-q:hover { color: var(--primary); }
.faq-q .icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--bg-warm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--text-sub);
  transition: all .3s;
}
.faq-item.active .faq-q .icon { background: var(--primary); color: #fff; border-color: var(--primary); transform: rotate(45deg); }
.faq-a {
  display: none;
  padding: 0 0 24px;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.8;
  max-width: 660px;
}
.faq-item.active .faq-a { display: block; animation: fadeIn .3s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

/* ===== 咨询表单 ===== */
.contact-section { background: var(--white); }
.contact-grid { display: flex; gap: 60px; align-items: flex-start; }
.contact-info { flex: 1; }
.contact-info h2 { font-size: 32px; font-weight: 700; margin-bottom: 16px; }
.contact-info .desc { color: var(--text-sub); font-size: 16px; line-height: 1.8; margin-bottom: 32px; max-width: 440px; }
.contact-method { display: flex; align-items: center; gap: 16px; padding: 18px 0; border-bottom: 1px solid var(--bg-warm); }
.contact-method .icon-circle {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.contact-method .label { font-size: 13px; color: var(--text-sub); }
.contact-method .value { font-size: 17px; font-weight: 600; color: var(--text-main); }
.contact-form-wrap { flex: 1; background: var(--bg-warm); border: 1px solid var(--border); border-radius: var(--radius); padding: 36px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 8px; color: var(--text-main); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  height: 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  background: var(--white);
  color: var(--text-main);
  font-size: 15px;
  transition: all .25s;
}
.form-group textarea { height: 120px; padding: 12px 14px; resize: vertical; }
.form-group input::placeholder, .form-group textarea::placeholder { color: #A0A4AB; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232,93,4,.15);
}
.form-status { font-size: 13px; margin-top: 8px; display: none; }
.form-status.success { color: var(--green); display: block; }
.form-status.error { color: #DC2626; display: block; }
.phone-input { display: flex; }
.phone-prefix {
  width: 56px;
  text-align: center;
  border: 1px solid var(--border) !important;
  border-right: none !important;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm) !important;
  background: var(--bg-warm);
  color: var(--text-sub);
  font-weight: 600;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.phone-input input { border-radius: 0 var(--radius-sm) var(--radius-sm) 0 !important; }

/* ===== 页脚 ===== */
.site-footer { background: var(--dark); color: rgba(255,255,255,.7); padding: 64px 0 0; }
.footer-grid { display: flex; flex-wrap: wrap; gap: 40px; margin-bottom: 48px; }
.footer-col { flex: 1 1 200px; }
.footer-col.brand { flex: 1.4 1 260px; }
.footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.footer-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: var(--primary);
  border-radius: 10px;
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: rotate(-8deg);
}
.footer-logo .logo-text { font-size: 19px; font-weight: 800; color: #fff; }
.footer-col .about-text { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.5); max-width: 260px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 700; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a {
  color: rgba(255,255,255,.55);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s;
}
.footer-col ul a:hover { color: var(--primary); }
.footer-copyright {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 24px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  font-size: 13px;
  color: rgba(255,255,255,.38);
}
.footer-copyright a { color: rgba(255,255,255,.38); }
.footer-copyright a:hover { color: var(--primary); }

/* ===== 响应式 ===== */
@media screen and (max-width: 63.9375em) {
  .section-block { padding: 64px 0; }
  .hero { min-height: 520px; padding: 120px 0 60px; }
  .hero h1 { font-size: 36px; }
  .hero-sub { font-size: 16px; }
  .tier-grid { flex-direction: column; }
  .tier-card--featured { transform: translateY(0); border-width: 2px; }
  .tier-card--featured:hover { transform: translateY(-4px); }
  .contact-grid { flex-direction: column; gap: 40px; }
  .hero-float.f1 { left: 0; }
  .hero-float.f2 { right: 0; }
  .news-card { flex: 1 1 calc(50% - 12px); }
}
@media screen and (max-width: 39.9375em) {
  .section-block { padding: 56px 0; }
  .container { padding: 0 18px; }
  .site-nav { top: 10px; width: calc(100% - 20px); height: 60px; padding: 0 16px; border-radius: 20px; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-burger { display: block; }
  .hero { min-height: auto; padding: 110px 0 48px; }
  .hero h1 { font-size: 30px; }
  .hero-sub { font-size: 15px; }
  .hero-visual { margin-top: 48px; }
  .hero-float.f1 { top: -14px; left: -6px; padding: 10px 16px; }
  .hero-float.f2 { bottom: -14px; right: -6px; padding: 10px 16px; }
  .hero-float .num { font-size: 22px; }
  .section-head h2 { font-size: 24px; }
  .section-head p { font-size: 15px; }
  .btn-lg { padding: 16px 28px; font-size: 16px; }
  .countdown { gap: 8px; }
  .countdown-item { min-width: 68px; padding: 12px 6px 8px; }
  .countdown-item .num { font-size: 32px; }
  .countdown-sep { display: none; }
  .flash-content h2 { font-size: 26px; }
  .news-card { flex: 1 1 100%; min-width: 100%; }
  .contact-form-wrap { padding: 24px 20px; }
  .footer-grid { gap: 32px; }
  .footer-copyright { flex-direction: column; text-align: center; }
}
@media screen and (min-width: 40em) and (max-width: 63.9375em) {
  .hero-visual { margin-top: 48px; }
  .hero-float.f1 { left: 0; }
  .hero-float.f2 { right: 0; }
}

/* roulang page: category1 */
:root {
  --primary: #E85D04;
  --primary-hover: #C94F02;
  --primary-light: #FEF0E7;
  --dark: #1B1E23;
  --green: #2B9348;
  --yellow: #FFC300;
  --bg: #FAF9F6;
  --white: #FFFFFF;
  --text-main: #2B2D31;
  --text-sub: #6B7280;
  --border: #E9E6E0;
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-card: 0 1px 3px rgba(27, 30, 35, 0.06);
  --shadow-hover: 0 12px 24px rgba(27, 30, 35, 0.10);
  --shadow-nav: 0 4px 24px rgba(27, 30, 35, 0.12);
  --container-w: 1200px;
  --space-section: 80px;
  --space-section-mobile: 56px;
}
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  color: var(--primary);
  text-decoration: none;
  transition: color .2s ease, border-color .2s ease;
}
a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(232, 93, 4, 0.2);
  outline-offset: 2px;
}
ul {
  list-style: none;
}
.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}
.section-padding {
  padding: var(--space-section) 0;
}
@media (max-width: 768px) {
  .section-padding {
    padding: var(--space-section-mobile) 0;
  }
}

/* ===== 悬浮胶囊导航 ===== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 999;
  width: calc(100% - 48px);
  max-width: 1200px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(27, 30, 35, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 999px;
  padding: 0 28px;
  box-shadow: var(--shadow-nav);
  transition: height .3s ease, top .3s ease, box-shadow .3s ease;
}
.site-nav.nav-scrolled {
  height: 56px;
  top: 10px;
  box-shadow: 0 2px 16px rgba(27, 30, 35, 0.18);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none !important;
  flex-shrink: 0;
}
.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.nav-logo-text {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.nav-logo-text span {
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  font-weight: 400;
  margin-left: 2px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 18px;
  border-radius: 999px;
  transition: background .25s ease, color .25s ease;
  text-decoration: none;
  white-space: nowrap;
}
.nav-links a:hover {
  background: rgba(232, 93, 4, 0.15);
  color: #fff;
  text-decoration: none;
}
.nav-links a.active {
  background: rgba(232, 93, 4, 0.22);
  color: #F9A56B;
  font-weight: 600;
}
.nav-cta .btn {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease;
  text-decoration: none;
  display: inline-block;
}
.nav-cta .btn:hover {
  background: var(--primary-hover);
  transform: scale(1.02);
}
.nav-cta .btn:active {
  transform: scale(0.98);
}
.nav-burger {
  display: none;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 22px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
}
@media (max-width: 900px) {
  .site-nav {
    width: calc(100% - 32px);
    padding: 0 20px;
  }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    background: rgba(27, 30, 35, 0.96);
    backdrop-filter: blur(12px);
    border-radius: 20px;
    flex-direction: column;
    padding: 18px;
    min-width: 220px;
    box-shadow: 0 16px 40px rgba(27, 30, 35, 0.35);
  }
  .nav-links.open {
    display: flex;
  }
  .nav-links a {
    width: 100%;
    text-align: center;
    padding: 12px 16px;
  }
  .nav-burger {
    display: block;
  }
  .nav-cta {
    margin-left: auto;
    margin-right: 12px;
  }
}
@media (max-width: 520px) {
  .nav-logo-text {
    font-size: 16px;
  }
  .nav-logo-text span {
    display: none;
  }
  .nav-cta .btn {
    padding: 8px 14px;
    font-size: 13px;
  }
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  padding: 14px 28px;
  text-decoration: none;
  cursor: pointer;
  transition: background .2s ease, transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  line-height: 1.4;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: scale(1.02);
  text-decoration: none;
}
.btn-primary:active {
  background: #b04303;
  transform: translateY(1px);
}
.btn-secondary {
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
}
.btn-secondary:hover {
  background: rgba(232, 93, 4, 0.08);
  color: var(--primary-hover);
  border-color: var(--primary-hover);
  text-decoration: none;
}
.btn-lg {
  padding: 16px 36px;
  font-size: 17px;
}
@media (max-width: 520px) {
  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ===== 分类页横幅 ===== */
.page-banner {
  position: relative;
  background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  min-height: 440px;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
}
.banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(27, 30, 35, 0.82) 0%, rgba(27, 30, 35, 0.45) 60%, rgba(27, 30, 35, 0.3) 100%);
}
.banner-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.banner-content h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.banner-content p {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 0;
}
.banner-badge {
  display: inline-block;
  background: rgba(232, 93, 4, 0.25);
  color: #F9A56B;
  border: 1px solid rgba(232, 93, 4, 0.4);
  padding: 6px 20px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 22px;
  text-transform: uppercase;
}
@media (max-width: 900px) {
  .page-banner {
    min-height: 380px;
    padding: 120px 0 60px;
  }
  .banner-content h1 {
    font-size: 36px;
  }
  .banner-content p {
    font-size: 16px;
  }
}
@media (max-width: 520px) {
  .page-banner {
    min-height: 340px;
    padding: 110px 0 48px;
  }
  .banner-content h1 {
    font-size: 32px;
  }
}

/* ===== 左右图文宽行 ===== */
.service-intro {
  background: var(--white);
}
.intro-text h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 24px;
  color: var(--text-main);
}
.intro-text p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-sub);
  margin-bottom: 20px;
}
.intro-text .btn {
  margin-top: 8px;
}
.intro-image {
  position: relative;
}
.intro-image img {
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  width: 100%;
  object-fit: cover;
}
.intro-image .float-badge {
  position: absolute;
  bottom: 18px;
  left: 18px;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-radius: 999px;
  padding: 10px 20px;
  font-size: 13px;
  color: var(--dark);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}
.intro-image .float-badge i {
  color: var(--primary);
}
@media (max-width: 768px) {
  .intro-text h2 {
    font-size: 26px;
    margin-top: 28px;
  }
}

/* ===== 两列信息大行列表 ===== */
.service-grid {
  background: var(--bg);
}
.service-grid-header {
  text-align: center;
  margin-bottom: 52px;
}
.service-grid-header h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
}
.service-grid-header p {
  font-size: 16px;
  color: var(--text-sub);
  margin-top: 12px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}
.service-block-row {
  margin-bottom: 28px;
}
.service-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 30px;
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
  box-shadow: var(--shadow-card);
}
.service-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(232, 93, 4, 0.3);
}
.service-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: background .3s ease, color .3s ease;
}
.service-item:hover .service-icon {
  background: var(--primary);
  color: #fff;
}
.service-item h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.service-item p {
  font-size: 15px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 0;
}
.service-item .service-link {
  display: inline-block;
  margin-top: 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--primary);
  text-decoration: none;
}
.service-item .service-link:hover {
  text-decoration: underline;
}
@media (max-width: 768px) {
  .service-grid-header h2 {
    font-size: 26px;
  }
  .service-item {
    padding: 28px 22px;
  }
  .service-block-row .columns {
    margin-bottom: 16px;
  }
}

/* ===== 适用人群 ===== */
.audience-section {
  background: var(--white);
}
.audience-header {
  text-align: center;
  margin-bottom: 48px;
}
.audience-header h2 {
  font-size: 32px;
  font-weight: 700;
}
.audience-header p {
  font-size: 16px;
  color: var(--text-sub);
  margin-top: 10px;
}
.audience-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 32px 28px;
  text-align: center;
  height: 100%;
  transition: transform .3s ease, box-shadow .3s ease;
}
.audience-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.audience-card i {
  font-size: 36px;
  color: var(--primary);
  margin-bottom: 18px;
}
.audience-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.audience-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  margin-bottom: 0;
}
@media (max-width: 900px) {
  .audience-card {
    margin-bottom: 16px;
  }
}
@media (max-width: 768px) {
  .audience-header h2 {
    font-size: 26px;
  }
}

/* ===== CTA 区块 ===== */
.cta-section {
  background: var(--dark);
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(232, 93, 4, 0.12) 0%, transparent 50%);
  pointer-events: none;
}
.cta-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 72px 24px;
  max-width: 720px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 32px;
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}
.cta-inner p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 32px;
}
.cta-inner .btn {
  margin: 0 8px;
}
@media (max-width: 768px) {
  .cta-inner {
    padding: 56px 20px;
  }
  .cta-inner h2 {
    font-size: 26px;
  }
  .cta-inner .btn {
    margin: 8px 0;
  }
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  padding: 64px 0 32px;
  color: rgba(255, 255, 255, 0.6);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}
.logo-icon {
  width: 34px;
  height: 34px;
  background: var(--primary);
  color: #fff;
  font-size: 17px;
  font-weight: 800;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}
.logo-text {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
}
.about-text {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
  max-width: 260px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: rgba(255, 255, 255, 0.58);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s ease;
}
.footer-col ul li a:hover {
  color: var(--primary);
}
.footer-col ul li i {
  margin-right: 6px;
  color: rgba(255, 255, 255, 0.4);
}
.footer-copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
  gap: 8px;
}
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}
@media (max-width: 520px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-copyright {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: article */
:root {
  --primary: #E85D04;
  --primary-hover: #C94F02;
  --primary-light: #FEF0E7;
  --dark: #1B1E23;
  --green: #2B9348;
  --yellow: #FFC300;
  --bg: #FAF9F6;
  --card-bg: #FFFFFF;
  --text: #2B2D31;
  --text-muted: #6B7280;
  --border: #E9E6E0;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 1px 3px rgba(27,30,35,0.06);
  --shadow-hover: 0 12px 24px rgba(27,30,35,0.10);
  --shadow-nav: 0 4px 24px rgba(27,30,35,0.12);
  --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "DIN Alternate", "Barlow Condensed", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color 0.2s; }
a:focus-visible { outline: 3px solid rgba(232,93,4,0.25); outline-offset: 2px; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { padding: 0; margin: 0; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.row { max-width: none; }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.2;
  transition: all 0.25s ease;
  border: 1px solid transparent;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); color: #fff; transform: scale(1.02); }
.btn-primary:active { transform: translateY(1px); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: rgba(232,93,4,0.08); color: var(--primary-hover); }

/* 悬浮胶囊导航 */
.site-nav {
  position: fixed;
  top: 16px;
  left: 0;
  right: 0;
  margin: 0 auto;
  width: calc(100% - 32px);
  max-width: 1240px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 24px;
  background: rgba(27,30,35,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 999px;
  box-shadow: var(--shadow-nav);
  z-index: 999;
  transition: padding 0.3s ease, box-shadow 0.3s ease;
}
.site-nav.scrolled { padding: 8px 24px; box-shadow: 0 6px 20px rgba(27,30,35,0.16); }
.nav-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.nav-logo-icon {
  width: 38px; height: 38px;
  background: linear-gradient(135deg, var(--primary) 0%, #F48C06 100%);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 18px;
  box-shadow: 0 4px 12px rgba(232,93,4,0.3);
}
.nav-logo-text { font-weight: 700; font-size: 18px; color: #fff; white-space: nowrap; }
.nav-logo-text span { color: rgba(255,255,255,0.68); font-weight: 400; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
  padding: 8px 16px;
  border-radius: 999px;
  color: rgba(255,255,255,0.82);
  font-size: 15px;
  font-weight: 500;
  transition: all 0.2s ease;
}
.nav-links a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-links a.active { color: var(--primary-hover); background: var(--primary-light); font-weight: 600; }
.nav-cta { flex-shrink: 0; }
.nav-cta .btn { padding: 10px 22px; font-size: 15px; }
.nav-burger {
  display: none;
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: #fff; font-size: 18px;
  align-items: center; justify-content: center;
}
.nav-burger:hover { background: rgba(255,255,255,0.2); }

/* 页面主体 */
.page-main { padding-top: 130px; min-height: 70vh; }

/* 面包屑 */
.breadcrumb {
  padding: 8px 0 24px;
  font-size: 14px;
  color: var(--text-muted);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { margin: 0 10px; color: var(--border); font-weight: 300; }
.breadcrumb .current { color: var(--text); font-weight: 500; }

/* 文章容器 */
.article-container { max-width: 900px; margin: 0 auto; padding: 0 24px 60px; }
.post-card {
  background: var(--card-bg);
  border-radius: 16px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-card);
  padding: 48px 56px;
}
.article-header { margin-bottom: 36px; }
.article-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin: 0 0 22px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.meta-item {
  font-size: 14px;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.meta-item i { color: var(--primary); }
.meta-badge {
  background: var(--primary-light);
  color: var(--primary-hover);
  padding: 5px 16px;
  border-radius: var(--radius-badge);
  font-size: 13px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 正文排版 */
.article-body { font-size: 17px; line-height: 1.85; color: #333; }
.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.3;
  margin: 44px 0 16px;
  color: var(--text);
}
.article-body h3 {
  font-size: 20px;
  font-weight: 600;
  line-height: 1.4;
  margin: 32px 0 12px;
  color: var(--text);
}
.article-body p { margin: 0 0 24px; }
.article-body a { color: var(--primary); border-bottom: 1px solid transparent; }
.article-body a:hover { border-bottom-color: var(--primary); }
.article-body strong { font-weight: 700; color: var(--text); }
.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  padding: 18px 22px;
  border-radius: 0 10px 10px 0;
  margin: 0 0 24px;
  font-size: 16px;
  color: #555;
}
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body ul, .article-body ol { margin: 0 0 24px; padding-left: 24px; }
.article-body li { margin-bottom: 8px; }
.article-body img { border-radius: 10px; margin: 24px auto; }
.article-body figure { margin: 28px 0; }
.article-body figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 10px;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; display: block; overflow-x: auto; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; font-size: 15px; }
.article-body th { background: var(--bg); font-weight: 600; white-space: nowrap; }

/* 文章底部 */
.article-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  margin-top: 40px;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-badge);
  font-size: 13px;
  color: var(--text-muted);
  transition: all 0.2s ease;
}
.tag:hover { color: var(--primary); border-color: var(--primary); background: #fff; }
.share-links { display: flex; align-items: center; gap: 10px; }
.share-label { font-size: 14px; color: var(--text-muted); }
.share-btn {
  width: 38px; height: 38px;
  display: inline-flex;
  align-items: center; justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-muted);
  font-size: 14px;
  transition: all 0.2s ease;
}
.share-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); }

/* 内容未找到 */
.not-found-card { text-align: center; padding: 70px 40px; }
.not-found-card i { font-size: 52px; color: var(--primary); margin-bottom: 20px; }
.not-found-title { font-size: 30px; font-weight: 800; margin-bottom: 10px; }
.not-found-card p { color: var(--text-muted); margin-bottom: 28px; }

/* 相关阅读 */
.related-section { background: var(--bg); padding: 70px 0 60px; border-top: 1px solid var(--border); }
.related-section .section-title {
  font-size: 32px;
  font-weight: 700;
  text-align: center;
  margin: 0 0 44px;
  color: var(--text);
}
.related-grid { display: flex; flex-wrap: wrap; margin: 0 -12px; }
.related-grid .columns { padding: 0 12px; }
.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.related-card .card-img { aspect-ratio: 16 / 9; overflow: hidden; background: #f0f0f0; }
.related-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.related-card:hover .card-img img { transform: scale(1.04); }
.related-card .card-body { padding: 22px 24px; display: flex; flex-direction: column; flex: 1; }
.related-card .card-tag { font-size: 12px; color: var(--primary); font-weight: 700; letter-spacing: 0.06em; }
.related-card h3 { font-size: 18px; font-weight: 600; line-height: 1.5; margin: 10px 0 14px; }
.related-card h3 a { color: var(--text); }
.related-card h3 a:hover { color: var(--primary); }
.related-card .card-date { font-size: 13px; color: var(--text-muted); margin-top: auto; display: flex; align-items: center; gap: 6px; }

/* CTA 区块 */
.cta-section { padding: 70px 0 90px; }
.cta-box {
  background: var(--dark);
  background-image: linear-gradient(135deg, rgba(232,93,4,0.18) 0%, transparent 60%);
  border-radius: 20px;
  padding: 56px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-box::after {
  content: "";
  position: absolute;
  top: -40px; right: -40px;
  width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(255,195,0,0.12) 0%, transparent 70%);
  border-radius: 50%;
}
.cta-box h2 { font-size: 30px; font-weight: 700; color: #fff; margin: 0 0 12px; }
.cta-box p { color: rgba(255,255,255,0.72); font-size: 16px; max-width: 620px; margin: 0 auto 34px; }
.cta-box .btn-cta {
  background: var(--yellow);
  color: var(--dark);
  font-weight: 700;
}
.cta-box .btn-cta:hover { background: #e0ad00; color: var(--dark); transform: scale(1.03); }
.cta-contact-line { margin-top: 18px; font-size: 14px; color: rgba(255,255,255,0.6); }
.cta-contact-line a { color: var(--yellow); }

/* 页脚 */
.site-footer { background: var(--dark); color: rgba(255,255,255,0.72); padding: 64px 0 0; }
.footer-grid { display: flex; flex-wrap: wrap; gap: 40px; padding-bottom: 48px; }
.footer-col { flex: 1 1 200px; min-width: 180px; }
.footer-col.brand { flex: 2 1 260px; }
.footer-logo { display: inline-flex; align-items: center; gap: 10px; color: #fff; font-size: 20px; font-weight: 700; }
.footer-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary) 0%, #F48C06 100%);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 17px;
}
.footer-logo .logo-text { color: #fff; }
.site-footer h4 { color: #fff; font-size: 16px; font-weight: 600; margin: 6px 0 18px; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 10px; font-size: 14px; }
.site-footer a { color: rgba(255,255,255,0.6); }
.site-footer a:hover { color: var(--primary); }
.about-text { font-size: 14px; line-height: 1.8; margin: 14px 0 0; color: rgba(255,255,255,0.55); }
.footer-copyright {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 10px;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

/* 响应式 */
@media (max-width: 1023px) {
  .post-card { padding: 36px 32px; }
  .footer-grid { gap: 32px; }
}

@media (max-width: 767px) {
  .site-nav { top: 8px; padding: 10px 16px; width: calc(100% - 20px); }
  .site-nav.scrolled { padding: 8px 16px; }
  .nav-cta { display: none; }
  .nav-burger { display: inline-flex; }
  .nav-links {
    position: fixed;
    top: 76px;
    left: 16px;
    right: 16px;
    flex-direction: column;
    align-items: stretch;
    background: var(--dark);
    border-radius: 20px;
    padding: 18px;
    gap: 8px;
    box-shadow: var(--shadow-hover);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 18px; font-size: 16px; text-align: left; }
  .nav-links a.active { background: var(--primary-light); }
  .page-main { padding-top: 96px; }
  .breadcrumb { font-size: 13px; padding: 4px 0 16px; }
  .article-container { padding: 0 16px 40px; }
  .post-card { padding: 26px 20px; border-radius: 14px; }
  .article-title { font-size: 26px; }
  .article-meta { gap: 14px; padding-bottom: 20px; }
  .article-body { font-size: 16px; line-height: 1.8; }
  .article-body h2 { font-size: 22px; margin-top: 32px; }
  .article-body h3 { font-size: 18px; }
  .article-footer { flex-direction: column; align-items: flex-start; }
  .related-section { padding: 52px 0 44px; }
  .related-section .section-title { font-size: 24px; margin-bottom: 28px; }
  .cta-section { padding: 48px 0 56px; }
  .cta-box { padding: 36px 20px; border-radius: 16px; }
  .cta-box h2 { font-size: 24px; }
  .cta-box p { font-size: 15px; }
  .site-footer { padding: 48px 0 0; }
  .footer-grid { gap: 28px; }
  .footer-col { min-width: 46%; }
  .footer-col.brand { flex-basis: 100%; }
  .footer-copyright { flex-direction: column; }
}

@media (max-width: 480px) {
  .nav-logo-text { font-size: 16px; }
  .nav-logo-icon { width: 34px; height: 34px; font-size: 16px; }
  .article-title { font-size: 23px; }
  .meta-item { font-size: 13px; }
  .related-section .section-title { font-size: 22px; }
  .btn { width: 100%; }
  .cta-box .btn { width: auto; min-width: 200px; }
}

/* roulang page: category2 */
:root {
            --primary: #E85D04;
            --primary-hover: #C94F02;
            --primary-light: #FEF0E7;
            --dark: #1B1E23;
            --green: #2B9348;
            --yellow: #FFC300;
            --bg-warm: #FAF9F6;
            --card-bg: #FFFFFF;
            --text-main: #2B2D31;
            --text-muted: #6B7280;
            --border: #E9E6E0;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-pill: 999px;
            --shadow-card: 0 1px 3px rgba(27, 30, 35, 0.06);
            --shadow-hover: 0 12px 24px rgba(27, 30, 35, 0.10);
            --shadow-nav: 0 4px 24px rgba(27, 30, 35, 0.12);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-warm);
            color: var(--text-main);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

        body.nav-open {
            overflow: hidden;
        }

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

        a:hover {
            text-decoration: underline;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        textarea:focus-visible,
        select:focus-visible {
            outline: 3px solid rgba(232, 93, 4, 0.22);
            outline-offset: 2px;
        }

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.2;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn:hover {
            text-decoration: none;
            transform: scale(1.02);
        }

        .btn:active {
            transform: translateY(1px) scale(1);
        }

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

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

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

        .btn-outline:hover {
            background: var(--primary-light);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.65);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
        }

        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 50px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--dark);
            letter-spacing: 0.5px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            margin-top: 14px;
        }

        /* ===== 悬浮胶囊导航 ===== */
        .site-nav {
            position: fixed;
            top: 16px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 32px);
            max-width: 1200px;
            background: rgba(27, 30, 35, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-radius: var(--radius-pill);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px 0 20px;
            height: 72px;
            box-shadow: var(--shadow-nav);
            transition: height 0.3s ease, box-shadow 0.3s ease;
        }

        .site-nav.scrolled {
            height: 58px;
            box-shadow: 0 8px 32px rgba(27, 30, 35, 0.2);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .nav-logo:hover {
            text-decoration: none;
            opacity: 0.92;
        }

        .nav-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 19px;
            font-weight: 800;
            font-family: "PingFang SC", "Noto Sans SC", sans-serif;
            box-shadow: 0 2px 8px rgba(232, 93, 4, 0.35);
        }

        .nav-logo-text {
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
            line-height: 1.2;
        }

        .nav-logo-text span {
            color: var(--yellow);
            font-size: 13px;
            font-weight: 600;
            margin-left: 2px;
            vertical-align: 1px;
        }

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

        .nav-links a {
            color: rgba(255, 255, 255, 0.82);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: var(--radius-pill);
            text-decoration: none;
            transition: all 0.25s ease;
            line-height: 1.4;
        }

        .nav-links a:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.1);
            text-decoration: none;
        }

        .nav-links a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .nav-cta .btn {
            padding: 10px 24px;
            font-size: 15px;
            border-radius: var(--radius-btn);
        }

        .nav-burger {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            font-size: 17px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.25s ease;
        }

        .nav-burger:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.6);
        }

        .mobile-drawer {
            position: fixed;
            top: 16px;
            right: 16px;
            left: 16px;
            z-index: 999;
            background: rgba(27, 30, 35, 0.97);
            backdrop-filter: blur(18px);
            border-radius: 20px;
            padding: 24px 20px 28px;
            box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
            display: none;
            flex-direction: column;
            gap: 6px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .mobile-drawer.open {
            display: flex;
        }

        .mobile-drawer a {
            color: rgba(255, 255, 255, 0.88);
            font-size: 16px;
            font-weight: 500;
            padding: 14px 18px;
            border-radius: 12px;
            text-decoration: none;
            transition: all 0.2s ease;
        }

        .mobile-drawer a:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .mobile-drawer a.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        .mobile-drawer .drawer-cta {
            margin-top: 12px;
            background: var(--primary);
            color: #fff;
            text-align: center;
            font-weight: 600;
            justify-content: center;
            display: flex;
        }

        .mobile-drawer .drawer-close {
            position: absolute;
            top: 14px;
            right: 14px;
            background: transparent;
            border: none;
            color: rgba(255, 255, 255, 0.6);
            font-size: 18px;
            cursor: pointer;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }

        .mobile-drawer .drawer-close:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
        }

        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.55);
            z-index: 998;
        }

        .drawer-overlay.show {
            display: block;
        }

        /* ===== 横幅 ===== */
        .page-banner {
            background:
                linear-gradient(135deg, rgba(27, 30, 35, 0.95) 0%, rgba(27, 30, 35, 0.78) 45%, rgba(27, 30, 35, 0.55) 100%),
                url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 190px 0 90px;
            position: relative;
            overflow: hidden;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -40px;
            right: -40px;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(232, 93, 4, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .banner-breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 20px;
        }

        .banner-breadcrumb a {
            color: rgba(255, 255, 255, 0.55);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .banner-breadcrumb a:hover {
            color: var(--yellow);
        }

        .banner-breadcrumb .sep {
            color: rgba(255, 255, 255, 0.35);
        }

        .banner-breadcrumb .current {
            color: rgba(255, 255, 255, 0.95);
            font-weight: 500;
        }

        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            margin: 8px 0 18px;
            letter-spacing: 1px;
            position: relative;
            z-index: 1;
        }

        .banner-text {
            color: rgba(255, 255, 255, 0.88);
            font-size: 17px;
            line-height: 1.8;
            max-width: 740px;
            position: relative;
            z-index: 1;
        }

        .banner-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 36px;
            position: relative;
            z-index: 1;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .stat-num {
            font-size: 34px;
            font-weight: 800;
            color: var(--yellow);
            font-family: "DIN Alternate", "Barlow Condensed", sans-serif;
            line-height: 1.1;
        }

        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            letter-spacing: 1px;
        }

        /* ===== 分类通用区块 ===== */
        .cate-section {
            padding: 90px 0;
        }

        /* ===== 信息网格 2x2 ===== */
        .info-grid-section {
            padding: 90px 0;
        }

        .info-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 34px 30px;
            height: 100%;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .info-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--yellow));
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .info-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-5px);
            border-color: rgba(232, 93, 4, 0.25);
        }

        .info-card:hover::before {
            opacity: 1;
        }

        .info-icon {
            width: 54px;
            height: 54px;
            border-radius: 14px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 18px;
            transition: transform 0.3s ease;
        }

        .info-card:hover .info-icon {
            transform: scale(1.06) rotate(-4deg);
        }

        .info-card h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .info-card p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== 对比区 ===== */
        .compare-section-wrap {
            background: #fff;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .compare-card {
            background: var(--bg-warm);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 38px 34px;
            height: 100%;
            transition: all 0.3s ease;
        }

        .compare-card.highlighted {
            background: linear-gradient(180deg, #fff 0%, var(--primary-light) 100%);
            border: 2px solid var(--primary);
            box-shadow: var(--shadow-hover);
            position: relative;
        }

        .compare-card.highlighted::before {
            content: '';
            position: absolute;
            top: -1px;
            right: 28px;
            left: 28px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--yellow));
            border-radius: 0 0 8px 8px;
        }

        .compare-tag {
            display: inline-block;
            padding: 5px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            background: rgba(27, 30, 35, 0.08);
            color: var(--dark);
            letter-spacing: 0.5px;
        }

        .highlighted .compare-tag {
            background: var(--primary);
            color: #fff;
        }

        .compare-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--dark);
            margin: 14px 0 18px;
            line-height: 1.3;
        }

        .compare-list {
            list-style: none;
            margin: 0 0 16px;
            padding: 0;
        }

        .compare-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 6px 0;
            color: var(--text-main);
            font-size: 15px;
            line-height: 1.6;
        }

        .compare-list li i {
            color: var(--green);
            margin-top: 4px;
            font-size: 14px;
            flex-shrink: 0;
        }

        .compare-desc {
            color: var(--text-muted);
            font-size: 14px;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin-bottom: 0;
            line-height: 1.7;
        }

        /* ===== CTA 深色区块 ===== */
        .cta-block {
            padding: 90px 0;
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background:
                linear-gradient(135deg, rgba(232, 93, 4, 0.16) 0%, transparent 50%),
                repeating-linear-gradient(-45deg, rgba(255, 255, 255, 0.02) 0px, rgba(255, 255, 255, 0.02) 2px, transparent 2px, transparent 8px);
            pointer-events: none;
        }

        .cta-inner {
            text-align: center;
            color: #fff;
            max-width: 720px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .cta-inner h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.78);
            font-size: 16px;
            margin-bottom: 30px;
            line-height: 1.7;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .cta-buttons .btn {
            min-width: 160px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
            position: relative;
        }

        .site-footer a {
            color: #A6A9AD;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        .site-footer a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-col {
            flex: 1 1 200px;
            min-width: 180px;
        }

        .footer-col.brand {
            flex: 0 0 100%;
            max-width: 360px;
        }

        .footer-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff !important;
            margin-bottom: 12px;
        }

        .footer-logo .logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            font-weight: 800;
        }

        .footer-logo .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .about-text {
            font-size: 14px;
            color: #A6A9AD;
            line-height: 1.75;
            margin: 12px 0 0;
            max-width: 330px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 8px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }

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

        .footer-col ul li {
            padding: 5px 0;
            font-size: 14px;
            color: #A6A9AD;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .footer-col ul li i {
            width: 18px;
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }

        .footer-copyright {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 10px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media screen and (max-width: 64em) {
            .nav-links {
                gap: 2px;
            }

            .nav-links a {
                padding: 8px 14px;
                font-size: 14px;
            }

            .nav-cta .btn {
                padding: 9px 18px;
                font-size: 14px;
            }

            .page-banner {
                padding: 170px 0 80px;
            }

            .page-banner h1 {
                font-size: 38px;
            }

            .banner-stats {
                gap: 28px;
            }

            .info-card {
                padding: 28px 24px;
            }

            .compare-card {
                padding: 30px 26px;
            }
        }

        @media screen and (max-width: 40em) {
            .site-nav {
                top: 12px;
                width: calc(100% - 24px);
                height: 64px;
                padding: 0 16px 0 14px;
            }

            .site-nav.scrolled {
                height: 56px;
            }

            .nav-links,
            .nav-cta {
                display: none;
            }

            .nav-burger {
                display: flex;
            }

            .nav-logo-icon {
                width: 34px;
                height: 34px;
                font-size: 17px;
            }

            .nav-logo-text {
                font-size: 16px;
            }

            .nav-logo-text span {
                font-size: 12px;
            }

            .page-banner {
                padding: 150px 0 60px;
            }

            .page-banner h1 {
                font-size: 32px;
                letter-spacing: 0.5px;
            }

            .banner-text {
                font-size: 15px;
            }

            .banner-stats {
                gap: 20px;
                margin-top: 28px;
            }

            .stat-num {
                font-size: 26px;
            }

            .cate-section,
            .info-grid-section,
            .compare-section-wrap,
            .cta-block {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

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

            .section-head p {
                font-size: 15px;
            }

            .info-card {
                padding: 24px 20px;
            }

            .info-icon {
                width: 46px;
                height: 46px;
                font-size: 19px;
                border-radius: 12px;
                margin-bottom: 14px;
            }

            .info-card h3 {
                font-size: 18px;
            }

            .info-card p {
                font-size: 14px;
            }

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

            .compare-card h3 {
                font-size: 19px;
            }

            .compare-list li {
                font-size: 14px;
            }

            .cta-inner h2 {
                font-size: 24px;
            }

            .cta-inner p {
                font-size: 15px;
            }

            .cta-buttons {
                flex-direction: column;
            }

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

            .site-footer {
                padding: 48px 0 0;
            }

            .footer-grid {
                gap: 32px;
            }

            .footer-col {
                flex: 1 1 100%;
                max-width: 100%;
            }

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

            .footer-copyright {
                flex-direction: column;
                gap: 6px;
            }
        }

        @media screen and (min-width: 40.0625em) and (max-width: 64em) {
            .info-card {
                min-height: 260px;
            }
        }

        @media screen and (min-width: 64.0625em) {
            .info-card {
                min-height: 240px;
            }

            .compare-card {
                min-height: 280px;
            }
        }

        /* Foundation 覆盖 */
        .row {
            max-width: 1200px;
            margin: 0 auto;
        }

        .columns {
            padding-left: 12px;
            padding-right: 12px;
        }

        .row .row {
            margin-left: -12px;
            margin-right: -12px;
        }

/* roulang page: category3 */
/* ===== 设计变量 ===== */
:root {
  --primary: #E85D04;
  --primary-hover: #C94F02;
  --primary-light: #FEF0E7;
  --dark: #1B1E23;
  --dark-soft: #262A31;
  --green: #2B9348;
  --yellow: #FFC300;
  --bg: #FAF9F6;
  --white: #FFFFFF;
  --text: #2B2D31;
  --text-light: #6B7280;
  --border: #E9E6E0;
  --radius: 12px;
  --radius-btn: 8px;
  --radius-pill: 999px;
  --shadow: 0 1px 3px rgba(27,30,35,0.06);
  --shadow-hover: 0 12px 24px rgba(27,30,35,0.10);
  --shadow-nav: 0 4px 24px rgba(27,30,35,0.12);
  --transition: all 0.3s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; font-size: 16px; }
section { position: relative; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.2;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-hover);
  color: #fff;
  transform: scale(1.02);
  text-decoration: none;
}
.btn-primary:active {
  transform: translateY(1px);
  background: #B14402;
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary);
  text-decoration: none;
}
.btn-outline:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(232, 93, 4, 0.2);
}
.btn-dark {
  background: var(--dark);
  color: #fff;
}
.btn-dark:hover {
  background: #2d3238;
  color: #fff;
  text-decoration: none;
}
.btn-yellow {
  background: var(--yellow);
  color: var(--dark);
}
.btn-yellow:hover {
  background: #eab400;
  color: var(--dark);
  transform: scale(1.02);
  text-decoration: none;
}
.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(232, 93, 4, 0.25);
}

/* ===== 导航 ===== */
.site-nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1000;
  width: calc(100% - 32px);
  max-width: 1200px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: rgba(27, 30, 35, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-nav);
  transition: height 0.3s ease, background 0.3s ease;
}
.site-nav.scrolled {
  height: 56px;
  background: rgba(27, 30, 35, 0.92);
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo:hover { text-decoration: none; }
.nav-logo-icon,
.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.nav-logo-text {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.nav-logo-text span {
  display: block;
  font-size: 12px;
  font-weight: 400;
  color: rgba(255,255,255,0.7);
  letter-spacing: 1px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav-links a {
  padding: 9px 18px;
  font-size: 15px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  border-radius: var(--radius-pill);
  transition: var(--transition);
  text-decoration: none;
}
.nav-links a:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}
.nav-links a.active {
  background: rgba(232, 93, 4, 0.18);
  color: #FF9A4A;
  font-weight: 600;
}
.nav-cta .btn {
  padding: 10px 22px;
  font-size: 15px;
}
.nav-burger {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-burger:hover { background: var(--primary); }

/* ===== 移动端导航抽屉 ===== */
.mobile-drawer {
  position: fixed;
  top: 84px;
  right: -320px;
  width: 280px;
  max-width: 85vw;
  z-index: 999;
  background: var(--dark);
  border-radius: 16px;
  box-shadow: var(--shadow-nav);
  padding: 24px;
  transition: right 0.35s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.mobile-drawer.open { right: 16px; }
.mobile-drawer a {
  font-size: 16px;
  color: rgba(255,255,255,0.85);
  padding: 12px 16px;
  border-radius: 10px;
  text-decoration: none;
  transition: var(--transition);
}
.mobile-drawer a:hover {
  background: rgba(255,255,255,0.08);
  color: #fff;
}
.mobile-drawer a.active {
  background: rgba(232, 93, 4, 0.18);
  color: #FF9A4A;
}
.mobile-drawer .btn {
  margin-top: 10px;
  width: 100%;
}
.drawer-mask {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}
.drawer-mask.show { opacity: 1; pointer-events: auto; }

/* ===== Hero Banner ===== */
.cat-hero {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  background: var(--dark);
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.cat-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(27,30,35,0.92) 30%, rgba(27,30,35,0.65) 70%, rgba(27,30,35,0.4) 100%);
}
.cat-hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), transparent);
}
.cat-hero .container {
  position: relative;
  z-index: 2;
  padding-top: 120px;
  padding-bottom: 60px;
}
.cat-hero .hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232, 93, 4, 0.2);
  color: #FF9A4A;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 18px;
  border: 1px solid rgba(232, 93, 4, 0.3);
}
.cat-hero h1 {
  font-size: 44px;
  font-weight: 800;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 16px;
}
.cat-hero p {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255,255,255,0.85);
  max-width: 620px;
  margin-bottom: 28px;
}
.cat-hero .hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===== 速度线装饰 ===== */
.speed-lines {
  position: absolute;
  bottom: 20px;
  right: 0;
  left: 0;
  height: 100%;
  pointer-events: none;
  overflow: hidden;
}
.speed-lines span {
  position: absolute;
  height: 2px;
  background: rgba(255,255,255,0.08);
  transform: rotate(-45deg);
  border-radius: 2px;
}
.speed-lines span:nth-child(1) { width: 220px; bottom: 80px; right: 8%; }
.speed-lines span:nth-child(2) { width: 140px; bottom: 140px; right: 15%; }
.speed-lines span:nth-child(3) { width: 180px; bottom: 200px; right: 5%; }
.speed-lines span:nth-child(4) { width: 260px; bottom: 260px; right: 18%; }

/* ===== 区块标题 ===== */
.section-block { padding: 80px 0; }
.section-block.bg-white { background: var(--white); }
.section-block.bg-bg { background: var(--bg); }
.section-block.bg-dark { background: var(--dark); }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-head .section-sub {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}
.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 12px;
}
.section-head p {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== 逐行对照列表 ===== */
.compare-list-wrap { padding: 80px 0 100px; }
.compare-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  margin-bottom: 24px;
  transition: var(--transition);
  position: relative;
}
.compare-row:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}
.compare-col {
  padding: 36px 40px;
  position: relative;
}
.compare-col:first-child::after {
  content: '';
  position: absolute;
  right: 0;
  top: 18%;
  bottom: 18%;
  width: 1px;
  background: var(--border);
}
.compare-col .compare-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  display: inline-block;
  margin-bottom: 12px;
}
.compare-col .compare-label.green {
  color: var(--green);
  background: rgba(43, 147, 72, 0.1);
}
.compare-col h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  line-height: 1.4;
}
.compare-col p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.7;
}
.compare-vs {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 44px;
  height: 44px;
  background: var(--dark);
  color: var(--yellow);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.5px;
  z-index: 3;
  border: 3px solid var(--bg);
  box-shadow: var(--shadow);
}

/* ===== 核心要素 2×2 ===== */
.core-grid .core-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  height: calc(100% - 24px);
  margin-bottom: 24px;
  transition: var(--transition);
  box-shadow: var(--shadow);
}
.core-grid .core-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
  border-color: rgba(232, 93, 4, 0.3);
}
.core-card .card-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: var(--transition);
}
.core-card:hover .card-icon {
  background: var(--primary);
  color: #fff;
}
.core-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
}
.core-card p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* ===== FAQ 手风琴 ===== */
.faq-wrap { max-width: 760px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 24px 0;
}
.faq-item:first-child { border-top: 1px solid var(--border); }
.faq-item .faq-q {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: var(--transition);
  padding: 4px 0;
}
.faq-item .faq-q:hover { color: var(--primary); }
.faq-item .faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
}
.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-item .faq-a {
  display: none;
  padding-top: 14px;
  color: var(--text-light);
  font-size: 15px;
  line-height: 1.75;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}
.faq-item.active .faq-a {
  display: block;
  padding-bottom: 6px;
}

/* ===== CTA ===== */
.cta-block {
  background: var(--dark);
  background-image: linear-gradient(135deg, rgba(232,93,4,0.12) 25%, transparent 25%, transparent 50%, rgba(232,93,4,0.12) 50%, rgba(232,93,4,0.12) 75%, transparent 75%);
  background-size: 16px 16px;
  padding: 80px 0;
  text-align: center;
}
.cta-block h2 {
  font-size: 32px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}
.cta-block p {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  max-width: 600px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

/* ===== 关联分类互链 ===== */
.related-cats { padding: 80px 0; background: var(--white); }
.related-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--dark);
  border-radius: var(--radius);
  padding: 32px 36px;
  min-height: 140px;
  transition: var(--transition);
  text-decoration: none;
  position: relative;
  overflow: hidden;
}
.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  text-decoration: none;
}
.related-card::after {
  content: '\f054';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  position: absolute;
  right: 36px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 20px;
  transition: var(--transition);
}
.related-card:hover::after {
  right: 28px;
}
.related-card .related-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  background: rgba(232, 93, 4, 0.18);
  color: #FF9A4A;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.related-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}
.related-card p {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  line-height: 1.6;
}

/* ===== 页脚 ===== */
.site-footer {
  background: var(--dark);
  color: #fff;
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  text-decoration: none !important;
}
.footer-logo .logo-text {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}
.about-text {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255,255,255,0.6);
  max-width: 300px;
}
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul a {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul a:hover {
  color: var(--primary);
  padding-left: 4px;
}
.footer-col ul li i {
  width: 20px;
  color: rgba(255,255,255,0.4);
}
.footer-copyright {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 24px 0 32px;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}

/* ===== 返回顶部 ===== */
.back-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-hover);
  z-index: 99;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition);
  text-decoration: none;
}
.back-top.show { opacity: 1; pointer-events: auto; }
.back-top:hover { background: var(--primary-hover); color: #fff; transform: translateY(-3px); }
.back-top:focus { outline: 2px solid var(--primary); outline-offset: 2px; }

/* ===== 响应式 ===== */
@media (max-width: 63.9375em) {
  .site-nav { padding: 0 16px; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .nav-burger { display: flex; }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 39.9375em) {
  .site-nav { top: 8px; height: 60px; border-radius: 16px; width: calc(100% - 20px); }
  .site-nav.scrolled { height: 52px; }
  .nav-logo-text { font-size: 17px; }
  .nav-logo-icon { width: 34px; height: 34px; font-size: 16px; border-radius: 8px; }
  .cat-hero { min-height: 380px; }
  .cat-hero h1 { font-size: 32px; }
  .cat-hero p { font-size: 16px; }
  .cat-hero .container { padding-top: 90px; padding-bottom: 40px; }
  .section-block { padding: 56px 0; }
  .section-head { margin-bottom: 32px; }
  .section-head h2 { font-size: 24px; }
  .compare-row { grid-template-columns: 1fr; }
  .compare-col { padding: 24px; }
  .compare-col:first-child::after {
    content: '';
    position: absolute;
    right: 10%;
    left: 10%;
    top: auto;
    bottom: 0;
    width: auto;
    height: 1px;
  }
  .compare-vs {
    top: auto;
    left: 50%;
    transform: translate(-50%, -50%);
  }
  .compare-list-wrap { padding: 56px 0; }
  .core-card { padding: 20px; }
  .cta-block { padding: 56px 0; }
  .cta-block h2 { font-size: 24px; }
  .related-cats { padding: 56px 0; }
  .related-card { padding: 24px; flex-direction: column; text-align: center; }
  .related-card::after { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-copyright { flex-direction: column; align-items: center; text-align: center; }
  .back-top { bottom: 16px; right: 16px; width: 38px; height: 38px; font-size: 14px; }
}

/* ===== 可访问性 ===== */
:focus-visible {
  outline: 3px solid rgba(232, 93, 4, 0.3);
  outline-offset: 2px;
}