/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
  --primary: #0E4D4B;
  --primary-dark: #0A2E2C;
  --primary-light: #1A6B68;
  --primary-soft: #E8F0EF;
  --secondary: #E8A33D;
  --secondary-light: #FDF2E3;
  --secondary-dark: #D98C23;
  --bg-light: #F7F9F8;
  --white: #FFFFFF;
  --text-main: #1F2937;
  --text-muted: #6B7280;
  --text-light: #9CA3AF;
  --border: #E6ECEA;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(10, 46, 44, 0.06);
  --shadow-lg: 0 8px 24px rgba(10, 46, 44, 0.12);
  --shadow-xl: 0 12px 32px rgba(10, 46, 44, 0.16);
  --gradient-primary: linear-gradient(135deg, #0E4D4B 0%, #1A6B68 100%);
  --gradient-accent: linear-gradient(135deg, #E8A33D 0%, #D98C23 100%);
  --section-gap: 100px;
  --header-h: 72px;
  --nav-h: 52px;
}

/* ========== Reset & Base ========== */
* { 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-main);
  background: var(--bg-light);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: all .3s ease; }
a:hover { color: var(--primary); }
button { border: none; background: none; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 1rem; }
ul, ol { list-style: none; }
.container { max-width: 1280px; padding-left: 24px; padding-right: 24px; }
.section-gap { padding: var(--section-gap) 0; }

h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--primary-dark); }

/* ========== 按钮 ========== */
.btn-brand {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 28px; border-radius: 10px;
  background: var(--gradient-primary); color: #fff; font-weight: 600;
  border: none; font-size: 1rem; line-height: 1.5;
  transition: all .3s ease; box-shadow: 0 4px 12px rgba(14, 77, 75, .25);
}
.btn-brand:hover { background: linear-gradient(135deg, #125A58 0%, #1F7A76 100%); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(14, 77, 75, .3); }
.btn-brand:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

.btn-outline-brand {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 11px 26px; border-radius: 10px;
  background: transparent; color: var(--primary); font-weight: 600;
  border: 1.5px solid var(--primary); font-size: 1rem; line-height: 1.5;
  transition: all .3s ease;
}
.btn-outline-brand:hover { background: rgba(14, 77, 75, .05); color: var(--primary); transform: translateY(-2px); border-color: var(--primary-light); }
.btn-outline-brand:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }

.btn-accent {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px; padding: 12px 28px; border-radius: 10px;
  background: var(--gradient-accent); color: #fff; font-weight: 600;
  border: none; font-size: 1rem; line-height: 1.5;
  transition: all .3s ease; box-shadow: 0 4px 12px rgba(232, 163, 61, .3);
}
.btn-accent:hover { background: linear-gradient(135deg, #F0B04D 0%, #E6992E 100%); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232, 163, 61, .35); }

/* ========== Header / 双层导航 ========== */
.site-header {
  position: sticky; top: 0; z-index: 1050;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 12px rgba(10, 46, 44, .04);
}
.header-top {
  height: var(--header-h);
  display: flex; align-items: center; justify-content: space-between;
  gap: 20px;
}
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--gradient-primary);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 20px; color: #fff;
  letter-spacing: -1px; box-shadow: 0 4px 12px rgba(14, 77, 75, .25);
}
.brand-text { font-size: 1.35rem; font-weight: 800; letter-spacing: -.5px; color: var(--primary); white-space: nowrap; }
.brand-text .brand-part { color: var(--secondary); }
.header-right { display: flex; align-items: center; gap: 16px; }
.search-box { position: relative; }
.search-box input {
  width: 200px; height: 40px; border-radius: var(--radius-pill);
  border: 1px solid var(--border); background: var(--bg-light);
  padding: 0 16px 0 38px; font-size: .875rem; color: var(--text-main);
  transition: all .3s ease;
}
.search-box input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14, 77, 75, .1); width: 260px; background: #fff; }
.search-box .search-icon { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--text-muted); font-size: .9rem; }
.lang-switch {
  font-size: .875rem; color: var(--text-muted); cursor: pointer;
  padding: 6px 10px; border-radius: var(--radius-pill);
  border: 1px solid var(--border); transition: all .3s ease;
  white-space: nowrap;
}
.lang-switch:hover { border-color: var(--primary); color: var(--primary); }

/* 导航第二行 Tabs */
.nav-tabs-row {
  border-top: 1px solid var(--border);
  background: rgba(255, 255, 255, .8);
}
.nav-tabs-list {
  display: flex; align-items: center; gap: 8px;
  height: var(--nav-h); overflow-x: auto; scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-tabs-list::-webkit-scrollbar { display: none; }
.nav-tabs-list .nav-item { flex-shrink: 0; }
.nav-tabs-list .nav-link {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 22px; border-radius: var(--radius-pill);
  font-size: .925rem; font-weight: 500; color: var(--text-muted);
  transition: all .3s ease; white-space: nowrap;
}
.nav-tabs-list .nav-link:hover { background: rgba(14, 77, 75, .06); color: var(--primary); }
.nav-tabs-list .nav-link.active {
  background: var(--gradient-primary); color: #fff;
  font-weight: 600; box-shadow: 0 4px 12px rgba(14, 77, 75, .2);
}

/* ========== Hero ========== */
.hero-section {
  position: relative; overflow: hidden;
  background: var(--bg-light);
  padding: 80px 0 90px;
}
.hero-section::before {
  content: ''; position: absolute; top: -20%; left: -10%;
  width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 77, 75, .12) 0%, transparent 70%);
  pointer-events: none;
}
.hero-section::after {
  content: ''; position: absolute; bottom: -30%; right: -10%;
  width: 500px; height: 500px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 163, 61, .1) 0%, transparent 70%);
  pointer-events: none;
}
.hero-bg-img {
  position: absolute; inset: 0; z-index: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover; background-position: center;
  opacity: .15; pointer-events: none;
}
.hero-content { position: relative; z-index: 2; }
.hero-left { max-width: 540px; }
.hero-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--secondary-light); color: var(--secondary-dark);
  padding: 6px 16px; border-radius: var(--radius-pill);
  font-size: .875rem; font-weight: 600; margin-bottom: 20px;
}
.hero-badge .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--secondary); animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: .4; } }
.hero-title { font-size: 2.75rem; font-weight: 800; line-height: 1.2; color: var(--primary-dark); letter-spacing: -.5px; margin-bottom: 16px; }
.hero-title .highlight { color: var(--secondary); }
.hero-subtitle { font-size: 1.125rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 32px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* 数据看板 */
.metric-board { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.metric-card {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 24px 20px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all .3s ease; position: relative; overflow: hidden;
}
.metric-card::after {
  content: ''; position: absolute; bottom: 0; left: 0; right: 0;
  height: 3px; background: var(--gradient-accent); opacity: 0; transition: opacity .3s;
}
.metric-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.metric-card:hover::after { opacity: 1; }
.metric-num { font-size: 2.2rem; font-weight: 800; color: var(--primary); font-variant-numeric: tabular-nums; line-height: 1.2; }
.metric-num sup { font-size: 1rem; font-weight: 600; color: var(--secondary); }
.metric-label { font-size: .875rem; color: var(--text-muted); margin-top: 4px; }
.metric-trend { font-size: .8rem; color: #10B981; display: flex; align-items: center; gap: 4px; margin-top: 6px; }

/* ========== 可信度条 ========== */
.trust-bar {
  background: var(--white);
  border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
  padding: 30px 0; overflow: hidden;
  position: relative;
}
.trust-track {
  display: flex; align-items: center; gap: 48px;
  overflow-x: auto; scrollbar-width: none;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.trust-track::-webkit-scrollbar { display: none; }
.trust-item {
  display: flex; align-items: center; gap: 8px;
  font-size: .9rem; color: var(--text-muted); white-space: nowrap;
  font-weight: 500; padding: 8px 16px; border-radius: var(--radius-pill);
  background: var(--bg-light); border: 1px solid var(--border);
  transition: all .3s ease;
}
.trust-item i { color: var(--primary); }
.trust-item:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-soft); }

/* ========== 服务矩阵 ========== */
.services-section { background: var(--bg-light); }
.section-header { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 48px; }
.section-header .section-tag { font-size: .9rem; font-weight: 600; color: var(--secondary); letter-spacing: 2px; text-transform: uppercase; }
.section-header h2 { font-size: 2rem; font-weight: 700; color: var(--primary-dark); margin-top: 8px; }
.section-header p { color: var(--text-muted); font-size: 1rem; max-width: 480px; }
.section-header .view-all {
  font-size: .925rem; color: var(--primary); font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px; white-space: nowrap;
}
.section-header .view-all:hover { gap: 10px; }

.service-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.service-card {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 32px 28px; box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: all .35s ease; position: relative; overflow: hidden;
}
.service-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--gradient-primary); opacity: 0; transition: opacity .3s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.service-card:hover::before { opacity: 1; }
.service-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--primary-soft); display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; color: var(--primary); margin-bottom: 20px;
  transition: all .3s ease;
}
.service-card:hover .service-icon { background: var(--gradient-primary); color: #fff; }
.service-card h3 { font-size: 1.25rem; font-weight: 600; margin-bottom: 12px; color: var(--primary-dark); }
.service-card p { font-size: .925rem; color: var(--text-muted); line-height: 1.65; margin-bottom: 20px; }
.service-link { font-size: .875rem; color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.service-link:hover { gap: 8px; color: var(--secondary-dark); }

/* ========== 数据结果对比 ========== */
.compare-section {
  background: var(--white); position: relative; overflow: hidden;
}
.compare-section::before {
  content: ''; position: absolute; right: -10%; top: 10%;
  width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 163, 61, .08), transparent 70%);
  pointer-events: none;
}
.compare-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.compare-left .label { font-size: .9rem; font-weight: 600; color: var(--secondary); letter-spacing: 1px; margin-bottom: 12px; }
.compare-left h2 { font-size: 2rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 16px; }
.compare-left p { color: var(--text-muted); line-height: 1.7; margin-bottom: 24px; }
.compare-conclusion {
  display: inline-block; background: var(--secondary-light);
  border: 1px solid var(--secondary); color: var(--secondary-dark);
  padding: 10px 20px; border-radius: var(--radius-pill);
  font-size: .925rem; font-weight: 600;
}
.compare-right { display: flex; flex-direction: column; gap: 28px; }
.compare-item .compare-label { display: flex; justify-content: space-between; font-size: .925rem; margin-bottom: 8px; color: var(--text-main); font-weight: 500; }
.compare-item .compare-label .val { font-weight: 700; color: var(--primary); font-variant-numeric: tabular-nums; }
.compare-item .compare-label .val.ind { color: var(--secondary-dark); }
.compare-track { height: 10px; border-radius: var(--radius-pill); background: var(--bg-light); overflow: hidden; position: relative; }
.compare-fill { height: 100%; border-radius: var(--radius-pill); background: var(--gradient-primary); }
.compare-fill.ind { background: var(--gradient-accent); }

/* ========== 资讯区块 ========== */
.news-section { background: var(--bg-light); }
.news-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-card {
  display: block; background: var(--white); border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border);
  transition: all .35s ease;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-cover { position: relative; aspect-ratio: 16/9; overflow: hidden; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.news-card:hover .news-cover img { transform: scale(1.05); }
.news-tag {
  position: absolute; top: 12px; left: 12px;
  background: var(--gradient-primary); color: #fff;
  font-size: .75rem; padding: 4px 12px; border-radius: var(--radius-pill);
  font-weight: 600;
}
.news-body { padding: 24px; }
.news-body h3 { font-size: 1.125rem; font-weight: 600; color: var(--primary-dark); margin-bottom: 10px; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-body p { font-size: .9rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { display: flex; justify-content: space-between; align-items: center; font-size: .8rem; color: var(--text-light); padding-top: 16px; border-top: 1px solid var(--border); }
.news-meta .read-more { color: var(--primary); font-weight: 600; display: inline-flex; align-items: center; gap: 4px; }
.empty-state {
  border: 2px dashed var(--border); border-radius: var(--radius-lg);
  background: rgba(255,255,255,.6);
  display: flex; align-items: center; justify-content: center;
  min-height: 180px; padding: 40px; text-align: center;
  color: var(--text-muted); font-size: 1rem;
}
.empty-state i { font-size: 2.5rem; color: var(--text-light); display: block; margin-bottom: 12px; }

/* ========== FAQ ========== */
.faq-section { background: var(--white); }
.faq-wrap { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; align-items: start; }
.faq-left { position: sticky; top: calc(var(--header-h) + var(--nav-h) + 24px); }
.faq-left .label { font-size: .9rem; font-weight: 600; color: var(--secondary); letter-spacing: 1px; margin-bottom: 12px; }
.faq-left h2 { font-size: 2rem; font-weight: 700; color: var(--primary-dark); margin-bottom: 16px; }
.faq-left p { color: var(--text-muted); line-height: 1.7; margin-bottom: 24px; }
.accordion-item {
  border: 1px solid var(--border); border-radius: var(--radius-md) !important;
  margin-bottom: 12px; overflow: hidden; background: var(--white);
  box-shadow: var(--shadow-sm); transition: box-shadow .3s;
}
.accordion-item:has(.accordion-button:not(.collapsed)) { box-shadow: var(--shadow-lg); border-color: rgba(14,77,75,.2); }
.accordion-button {
  font-size: 1rem; font-weight: 600; color: var(--primary-dark);
  padding: 20px 24px; background: var(--white); border: none;
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
}
.accordion-button:not(.collapsed) { color: var(--primary); }
.accordion-button:focus { box-shadow: none; border-color: rgba(14,77,75,.2); }
.accordion-button::after {
  content: '\F64D'; font-family: 'bootstrap-icons'; background-image: none;
  font-size: 1.1rem; color: var(--primary); display: inline-flex;
  align-items: center; justify-content: center; transition: transform .3s;
  width: auto; height: auto;
}
.accordion-button:not(.collapsed)::after { transform: rotate(45deg); color: var(--secondary); }
.accordion-body { padding: 0 24px 20px; color: var(--text-muted); line-height: 1.7; font-size: .95rem; }

/* ========== 转化表单区 ========== */
.cta-section {
  background: var(--gradient-primary);
  position: relative; overflow: hidden; padding: 90px 0;
}
.cta-section::before {
  content: ''; position: absolute; top: -50%; right: -20%;
  width: 400px; height: 400px; border-radius: 50%;
  background: rgba(255,255,255,.06); pointer-events: none;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-card {
  background: var(--white); border-radius: 24px;
  padding: 48px; box-shadow: var(--shadow-xl);
  max-width: 780px; margin: 0 auto;
}
.cta-card h2 { font-size: 1.75rem; color: var(--primary-dark); margin-bottom: 8px; }
.cta-card .cta-sub { color: var(--text-muted); margin-bottom: 32px; }
.cta-card .form-label { font-size: .875rem; font-weight: 500; color: var(--text-main); margin-bottom: 6px; }
.cta-card .form-control {
  border-radius: 10px; border: 1px solid var(--border);
  padding: 12px 16px; font-size: .925rem; transition: all .3s;
  background: var(--bg-light);
}
.cta-card .form-control:focus {
  border-color: var(--primary); background: #fff;
  box-shadow: 0 0 0 3px rgba(14,77,75,.1); outline: none;
}
.cta-card textarea.form-control { min-height: 100px; resize: vertical; }
.cta-card .btn-submit {
  width: 100%; padding: 14px 28px; border-radius: 10px;
  background: var(--gradient-accent); color: #fff; font-weight: 600;
  font-size: 1.05rem; border: none; transition: all .3s ease;
  box-shadow: 0 4px 12px rgba(232,163,61,.3);
}
.cta-card .btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(232,163,61,.4); }
.cta-badges { display: flex; justify-content: center; gap: 20px; margin-top: 28px; flex-wrap: wrap; }
.cta-badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: .8rem; color: rgba(255,255,255,.9); background: rgba(255,255,255,.12);
  padding: 4px 14px; border-radius: var(--radius-pill);
}

/* ========== 页脚 ========== */
.site-footer { background: var(--primary-dark); color: rgba(255,255,255,.85); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .brand-logo { margin-bottom: 16px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-text .brand-part { color: var(--secondary); }
.footer-brand p { font-size: .9rem; color: rgba(255,255,255,.65); line-height: 1.7; max-width: 280px; }
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
  width: 36px; height: 36px; border-radius: 10px;
  background: rgba(255,255,255,.1); display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,.8); font-size: .95rem; transition: all .3s;
}
.footer-social a:hover { background: var(--secondary); color: #fff; transform: translateY(-2px); }
.footer-col h4 { font-size: 1rem; color: var(--secondary); font-weight: 600; margin-bottom: 20px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: .9rem; color: rgba(255,255,255,.6); transition: all .3s; display: inline-block; }
.footer-col ul li a:hover { color: #fff; transform: translateX(3px); }
.footer-col ul li a::before { content: ''; display: block; width: 0; height: 2px; background: var(--secondary); transition: width .3s; }
.footer-col ul li a:hover::before { width: 100%; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 14px; font-size: .9rem; color: rgba(255,255,255,.6); }
.footer-contact li i { color: var(--secondary); margin-top: 3px; font-size: .95rem; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0; display: flex; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
  font-size: .82rem; color: rgba(255,255,255,.45);
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--secondary); }

/* ========== 响应式 ========== */
@media (max-width: 991px) {
  :root { --section-gap: 76px; }
  .service-cards { grid-template-columns: repeat(2, 1fr); }
  .news-cards { grid-template-columns: repeat(2, 1fr); }
  .compare-wrap { grid-template-columns: 1fr; gap: 40px; }
  .faq-wrap { grid-template-columns: 1fr; gap: 40px; }
  .faq-left { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .hero-title { font-size: 2.2rem; }
}

@media (max-width: 767px) {
  :root { --section-gap: 56px; }
  .header-top { height: auto; padding: 14px 0; flex-wrap: wrap; }
  .header-right { width: 100%; justify-content: flex-end; }
  .search-box { display: none; }
  .lang-switch { display: none; }
  .nav-tabs-row { padding: 0; }
  .nav-tabs-list { height: 48px; }
  .nav-tabs-list .nav-link { padding: 7px 18px; font-size: .875rem; }
  .hero-section { padding: 56px 0 64px; }
  .hero-title { font-size: 1.75rem; }
  .hero-subtitle { font-size: 1rem; }
  .metric-board { grid-template-columns: 1fr 1fr; gap: 12px; }
  .metric-card { padding: 16px 14px; }
  .metric-num { font-size: 1.6rem; }
  .service-cards { grid-template-columns: 1fr; }
  .news-cards { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 12px; }
  .section-header h2 { font-size: 1.6rem; }
  .cta-card { padding: 28px 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
  .hero-cta .btn-brand, .hero-cta .btn-outline-brand { width: 100%; }
  .compare-conclusion { width: 100%; text-align: center; }
}

@media (max-width: 520px) {
  .brand-text { font-size: 1.1rem; }
  .brand-mark { width: 36px; height: 36px; font-size: 17px; }
  .hero-title { font-size: 1.5rem; }
  .metric-num { font-size: 1.4rem; }
  .metric-card { padding: 12px 10px; }
  .nav-tabs-list .nav-link { padding: 6px 14px; font-size: .825rem; }
  .btn-brand, .btn-outline-brand, .btn-accent { width: 100%; padding: 12px 20px; }
}

/* roulang page: category1 */
:root{
  --brand-primary:#0E4D4B;
  --brand-primary-dark:#0A3A38;
  --brand-primary-light:#17807A;
  --brand-accent:#E8A33D;
  --brand-accent-dark:#C9862A;
  --brand-accent-light:#FDF2E3;
  --bg-light:#F7F9F8;
  --bg-white:#FFFFFF;
  --bg-dark:#0A2E2C;
  --text-dark:#152B29;
  --text-body:#4A5F5C;
  --text-muted:#7A8F8C;
  --border-light:#E6ECEA;
  --radius-lg:20px;
  --radius-md:12px;
  --radius-sm:8px;
  --shadow-sm:0 2px 8px rgba(10,46,44,.06);
  --shadow-md:0 8px 24px rgba(10,46,44,.12);
  --shadow-lg:0 12px 32px rgba(10,46,44,.16);
  --font-sans:'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;
  --font-num:'Inter','Roboto',sans-serif;
  --section-gap:96px;
  --transition:all .3s ease;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{
  font-family:var(--font-sans);
  background:var(--bg-light);
  color:var(--text-body);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
a{text-decoration:none;color:var(--brand-primary);transition:var(--transition);}
a:hover{color:var(--brand-primary-light);}
img{max-width:100%;display:block;}
ul{list-style:none;padding:0;margin:0;}
input,button,textarea{font-family:inherit;}
.container{max-width:1280px;padding-left:24px;padding-right:24px;}

/* ── Header ── */
.site-header{
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--border-light);
  position:sticky;top:0;z-index:1000;
  box-shadow:0 1px 0 rgba(10,46,44,.03);
  backdrop-filter:blur(12px);
}
.header-top{display:flex;align-items:center;justify-content:space-between;padding:18px 0;gap:16px;flex-wrap:wrap;}
.brand-logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:42px;height:42px;border-radius:12px;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
  color:#fff;font-weight:700;font-size:1.3rem;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 4px 12px rgba(14,77,75,.25);
  letter-spacing:-1px;
}
.brand-text{font-size:1.35rem;font-weight:800;color:var(--brand-primary);letter-spacing:-.5px;line-height:1.2;}
.brand-part{color:var(--brand-accent);font-weight:700;font-size:.9em;margin-left:2px;letter-spacing:0;}
.header-right{display:flex;align-items:center;gap:18px;flex-wrap:wrap;}
.search-box{
  display:flex;align-items:center;gap:8px;
  background:var(--bg-light);border:1px solid var(--border-light);
  border-radius:999px;padding:9px 18px;width:280px;
  transition:var(--transition);
}
.search-box:focus-within{border-color:var(--brand-primary);box-shadow:0 0 0 3px rgba(14,77,75,.1);}
.search-box .search-icon{color:var(--text-muted);}
.search-box input{border:none;outline:none;background:transparent;font-size:.9rem;color:var(--text-dark);width:100%;}
.lang-switch{font-size:.9rem;color:var(--text-body);display:flex;align-items:center;cursor:pointer;padding:6px 4px;border-radius:8px;transition:var(--transition);}
.lang-switch:hover{color:var(--brand-primary);background:var(--bg-light);}
.btn-brand{
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
  color:#fff;border:none;border-radius:10px;
  padding:12px 28px;font-size:1rem;font-weight:600;
  box-shadow:0 4px 14px rgba(14,77,75,.25);
  transition:var(--transition);cursor:pointer;
}
.btn-brand:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(14,77,75,.3);
  color:#fff;
}
.btn-brand:focus-visible{outline:2px solid var(--brand-accent);outline-offset:2px;}
.nav-tabs-row{border-top:1px solid var(--border-light);background:#fff;}
.nav-tabs-list{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none;}
.nav-tabs-list::-webkit-scrollbar{display:none;}
.nav-tabs-list .nav-link{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 22px;border-radius:999px;
  color:var(--text-body);font-size:.95rem;font-weight:500;
  white-space:nowrap;transition:var(--transition);
}
.nav-tabs-list .nav-link i{font-size:1rem;}
.nav-tabs-list .nav-link:hover{background:var(--bg-light);color:var(--brand-primary);}
.nav-tabs-list .nav-link.active{
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
  color:#fff;box-shadow:0 4px 12px rgba(14,77,75,.22);
}

/* ── Category Hero ── */
.category-hero{
  position:relative;
  background:linear-gradient(135deg,rgba(10,46,44,.92) 0%,rgba(14,77,75,.82) 55%,rgba(23,128,122,.72) 100%),url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
  color:#fff;padding:76px 0 84px;
  overflow:hidden;
}
.category-hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 300px at 85% 20%,rgba(232,163,61,.18),transparent 70%);
  pointer-events:none;
}
.category-breadcrumb{margin-bottom:34px;position:relative;z-index:1;}
.category-breadcrumb .breadcrumb{margin:0;}
.category-breadcrumb .breadcrumb-item{font-size:.9rem;color:rgba(255,255,255,.7);}
.category-breadcrumb .breadcrumb-item + .breadcrumb-item::before{color:rgba(255,255,255,.45);}
.category-breadcrumb .breadcrumb-item a{color:rgba(255,255,255,.8);}
.category-breadcrumb .breadcrumb-item a:hover{color:var(--brand-accent);}
.category-breadcrumb .breadcrumb-item.active{color:var(--brand-accent);}
.category-hero-inner{position:relative;z-index:1;}
.hero-kicker{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.12);
  border:1px solid rgba(255,255,255,.2);
  border-radius:999px;padding:7px 18px;
  font-size:.9rem;font-weight:500;color:var(--brand-accent);
  margin-bottom:20px;
}
.category-hero h1{
  font-size:2.9rem;font-weight:800;line-height:1.2;
  color:#fff;letter-spacing:1px;margin-bottom:18px;
}
.category-hero-sub{
  font-size:1.12rem;line-height:1.8;color:rgba(255,255,255,.88);
  max-width:560px;margin-bottom:32px;
}
.hero-cta-group{display:flex;gap:14px;flex-wrap:wrap;}
.hero-cta-group .btn-brand{
  background:#fff;color:var(--brand-primary);
  box-shadow:0 6px 18px rgba(0,0,0,.15);
}
.hero-cta-group .btn-brand:hover{transform:translateY(-2px);color:var(--brand-primary);box-shadow:0 10px 24px rgba(0,0,0,.2);}
.btn-ghost{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;border:1.5px solid rgba(255,255,255,.5);
  color:#fff;border-radius:10px;padding:12px 28px;
  font-size:1rem;font-weight:500;transition:var(--transition);
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;color:#fff;transform:translateY(-2px);}
.hero-stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.hero-stat-card{
  background:rgba(255,255,255,.1);
  border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-lg);
  padding:26px 22px;backdrop-filter:blur(6px);
  transition:var(--transition);
}
.hero-stat-card:hover{background:rgba(255,255,255,.17);transform:translateY(-3px);}
.hero-stat-num{
  display:block;font-family:var(--font-num);
  font-size:2.15rem;font-weight:800;color:#fff;
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.hero-stat-label{display:block;margin-top:6px;font-size:.88rem;color:rgba(255,255,255,.75);}

/* ── Section Shared ── */
.section-gap{padding:var(--section-gap) 0;}
.section-kicker{
  display:inline-flex;align-items:center;
  font-size:.88rem;font-weight:600;color:var(--brand-accent-dark);
  letter-spacing:1px;text-transform:uppercase;margin-bottom:10px;
}
.section-kicker::before{content:"";width:26px;height:2px;background:var(--brand-accent);border-radius:2px;margin-right:10px;}
.section-title{
  font-size:2.05rem;font-weight:700;color:var(--text-dark);
  line-height:1.3;letter-spacing:.5px;
}
.section-subtitle{color:var(--text-muted);font-size:1.05rem;margin-top:8px;max-width:560px;}
.section-header{margin-bottom:44px;}
.section-header.center{text-align:center;}
.section-header.center .section-kicker::before{display:none;}
.section-header.center .section-subtitle{margin-left:auto;margin-right:auto;}
.section-header.with-link{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:20px;}

/* ── Featured Card ── */
.featured-card{
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);
  overflow:hidden;
  display:flex;transition:var(--transition);
}
.featured-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);}
.featured-media{position:relative;min-height:340px;width:100%;flex:1 1 45%;}
.featured-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.featured-overlay{
  position:absolute;left:20px;bottom:20px;
  background:rgba(10,46,44,.75);backdrop-filter:blur(4px);
  color:var(--brand-accent);font-size:.8rem;font-weight:600;
  letter-spacing:2px;padding:7px 16px;border-radius:999px;
  border:1px solid rgba(232,163,61,.3);
}
.featured-body{padding:52px 48px;display:flex;flex-direction:column;justify-content:center;flex:1 1 55%;}
.featured-kicker{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-accent-dark);font-size:.88rem;font-weight:600;
  margin-bottom:14px;
}
.featured-body h2{font-size:1.75rem;font-weight:700;color:var(--text-dark);line-height:1.35;margin-bottom:16px;}
.featured-body p{color:var(--text-body);line-height:1.85;margin-bottom:24px;font-size:1.02rem;}
.featured-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.badge-custom{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-accent-light);
  color:var(--brand-accent-dark);
  font-size:.85rem;font-weight:600;
  padding:7px 16px;border-radius:999px;
}
.btn-outline-brand{
  display:inline-flex;align-items:center;gap:8px;
  border:1.5px solid var(--brand-primary);color:var(--brand-primary);
  border-radius:10px;padding:11px 26px;font-weight:600;font-size:.95rem;
  transition:var(--transition);width:fit-content;
}
.btn-outline-brand:hover{
  background:var(--brand-primary);color:#fff;transform:translateY(-2px);
  box-shadow:0 6px 16px rgba(14,77,75,.2);
}

/* ── Service Grid ── */
.services-section{background:var(--bg-white);}
.service-card{
  background:var(--bg-light);
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  padding:32px 28px;
  height:100%;
  display:flex;flex-direction:column;
  transition:var(--transition);
  position:relative;overflow:hidden;
}
.service-card::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--brand-primary),var(--brand-accent));
  opacity:0;transition:var(--transition);
}
.service-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-6px);
  border-color:transparent;
}
.service-card:hover::before{opacity:1;}
.service-icon{
  width:52px;height:52px;border-radius:14px;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
  color:#fff;font-size:1.5rem;
  display:flex;align-items:center;justify-content:center;
  margin-bottom:20px;box-shadow:0 4px 12px rgba(14,77,75,.18);
}
.service-card h3{font-size:1.22rem;font-weight:700;color:var(--text-dark);margin-bottom:10px;}
.service-card p{font-size:.93rem;line-height:1.7;color:var(--text-muted);margin-bottom:18px;flex:1;}
.service-card a{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-primary);font-weight:600;font-size:.9rem;
}
.service-card a i{transition:transform .3s;}
.service-card a:hover{color:var(--brand-accent-dark);}
.service-card a:hover i{transform:translateX(4px);}

/* ── Metrics + Sidebar ── */
.metrics-section{
  position:relative;
  background:url('/assets/images/backpic/back-2.png') left bottom / 45% auto no-repeat,var(--bg-light);
}
.metric-card{
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  border:1px solid var(--border-light);
  padding:28px 24px;
  display:flex;flex-direction:column;
  transition:var(--transition);
  height:100%;
}
.metric-card:hover{
  box-shadow:var(--shadow-md);
  transform:translateY(-4px);
  border-color:transparent;
}
.metric-num{
  font-family:var(--font-num);
  font-size:2.4rem;font-weight:800;color:var(--brand-primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}
.metric-label{font-size:.92rem;color:var(--text-body);font-weight:600;margin-top:6px;}
.metric-trend{
  display:inline-flex;align-items:center;gap:4px;
  font-size:.8rem;color:var(--brand-accent-dark);
  background:var(--brand-accent-light);
  border-radius:999px;padding:3px 10px;
  margin-top:14px;width:fit-content;font-weight:600;
}
.metric-trend.up{color:#1E7E58;background:#E8F6F0;}
.side-card{
  background:var(--bg-white);
  border:1px solid var(--border-light);
  border-radius:var(--radius-lg);
  padding:26px 24px;margin-bottom:20px;
  box-shadow:var(--shadow-sm);
  transition:var(--transition);
}
.side-card:hover{box-shadow:var(--shadow-md);}
.side-card h4{
  font-size:1.05rem;font-weight:700;color:var(--text-dark);
  border-left:4px solid var(--brand-accent);
  padding-left:12px;margin-bottom:18px;
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag-pill{
  display:inline-flex;align-items:center;
  background:var(--bg-light);border:1px solid var(--border-light);
  color:var(--text-body);font-size:.85rem;
  border-radius:999px;padding:6px 15px;transition:var(--transition);
}
.tag-pill:hover{
  background:var(--brand-primary);color:#fff;border-color:var(--brand-primary);
  transform:translateY(-2px);
}
.side-links li{margin-bottom:10px;}
.side-links a{
  display:flex;align-items:center;gap:10px;
  padding:9px 12px;border-radius:10px;
  color:var(--text-body);background:var(--bg-light);
  font-size:.92rem;transition:var(--transition);
}
.side-links a i:first-child{color:var(--brand-primary);}
.side-links a i:last-child{margin-left:auto;font-size:.75rem;color:var(--text-muted);}
.side-links a:hover{
  background:var(--brand-primary);color:#fff;
  transform:translateX(4px);
}
.side-links a:hover i{color:#fff;}

/* ── Process ── */
.process-section{background:var(--bg-white);}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;position:relative;}
.process-grid::before{
  content:"";position:absolute;top:84px;left:12%;right:12%;height:2px;
  background:linear-gradient(90deg,var(--brand-primary),var(--brand-accent));
  opacity:.25;border-radius:2px;
}
.process-step{
  text-align:center;padding:0 10px;position:relative;
  transition:var(--transition);
}
.process-step:hover{transform:translateY(-6px);}
.process-num{
  display:block;font-family:var(--font-num);
  font-size:1.1rem;font-weight:800;color:var(--brand-accent);
  letter-spacing:2px;margin-bottom:8px;
}
.process-icon{
  width:72px;height:72px;margin:0 auto 20px;position:relative;z-index:1;
  background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-light));
  border-radius:22px;color:#fff;font-size:1.7rem;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 8px 20px rgba(14,77,75,.2);
  border:4px solid #fff;
}
.process-step h3{font-size:1.18rem;font-weight:700;color:var(--text-dark);margin-bottom:10px;}
.process-step p{font-size:.92rem;color:var(--text-muted);line-height:1.7;max-width:240px;margin:0 auto;}

/* ── FAQ ── */
.faq-section{background:var(--bg-light);}
.faq-left{padding-top:20px;}
.faq-left h2{margin-bottom:16px;}
.faq-left p{color:var(--text-muted);margin-bottom:26px;max-width:300px;}
.accordion-item{
  background:var(--bg-white);
  border:1px solid var(--border-light) !important;
  border-radius:var(--radius-md) !important;
  margin-bottom:14px;overflow:hidden;
  box-shadow:var(--shadow-sm);
  transition:var(--transition);
}
.accordion-item:has(.accordion-button:not(.collapsed)){
  border-color:var(--brand-primary) !important;
  box-shadow:0 4px 16px rgba(14,77,75,.1);
}
.accordion-button{
  background:var(--bg-white) !important;
  color:var(--text-dark) !important;
  font-weight:600;font-size:1.03rem;
  padding:20px 24px;
  border:none !important;
  box-shadow:none !important;
}
.accordion-button:focus{outline:none !important;box-shadow:none !important;}
.accordion-button::after{
  background:none !important;
  content:"+";
  font-size:1.5rem;color:var(--brand-primary);
  transition:transform .3s ease;
  display:flex;align-items:center;justify-content:center;
  width:auto;height:auto;
}
.accordion-button:not(.collapsed)::after{transform:rotate(45deg);color:var(--brand-accent);}
.accordion-body{
  padding:0 24px 24px;
  color:var(--text-body);
  border-top:1px solid var(--border-light);padding-top:16px;
  line-height:1.8;
}

/* ── CTA ── */
.cta-section{
  position:relative;
  background:linear-gradient(135deg,rgba(10,46,44,.96),rgba(14,77,75,.9)),url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  padding:72px 0;
}
.cta-inner{
  background:var(--bg-white);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-lg);
  padding:52px 48px;
}
.cta-inner h2{
  font-size:1.85rem;font-weight:800;color:var(--text-dark);
  line-height:1.35;margin-bottom:10px;
}
.cta-inner p{color:var(--text-muted);margin-bottom:0;}
.cta-form{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end;}
.cta-form input{
  flex:1;min-width:160px;
  background:var(--bg-light);
  border:1px solid var(--border-light);
  border-radius:10px;
  padding:12px 18px;
  font-size:.95rem;color:var(--text-dark);
  transition:var(--transition);
}
.cta-form input:focus{
  outline:none;border-color:var(--brand-primary);
  box-shadow:0 0 0 3px rgba(14,77,75,.1);
  background:#fff;
}
.btn-cta{
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand-accent),#F0B35A);
  color:#142B28;font-weight:700;border:none;
  border-radius:10px;padding:12px 30px;font-size:.98rem;
  box-shadow:0 4px 14px rgba(232,163,61,.3);
  transition:var(--transition);cursor:pointer;white-space:nowrap;
}
.btn-cta:hover{
  transform:translateY(-2px);
  box-shadow:0 8px 20px rgba(232,163,61,.4);
  color:#142B28;
}

/* ── Footer ── */
.site-footer{background:var(--bg-dark);color:rgba(255,255,255,.78);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;padding-bottom:52px;
}
.footer-brand .brand-logo{margin-bottom:18px;}
.footer-brand .brand-text{color:#fff;}
.footer-brand .brand-part{color:var(--brand-accent);}
.footer-brand .brand-mark{width:40px;height:40px;font-size:1.2rem;}
.footer-brand p{font-size:.92rem;line-height:1.8;color:rgba(255,255,255,.6);margin-bottom:20px;max-width:320px;}
.footer-social{display:flex;gap:10px;}
.footer-social a{
  width:38px;height:38px;border-radius:10px;
  background:rgba(255,255,255,.08);
  color:rgba(255,255,255,.7);
  display:flex;align-items:center;justify-content:center;
  font-size:1rem;transition:var(--transition);
}
.footer-social a:hover{
  background:var(--brand-accent);color:var(--bg-dark);
  transform:translateY(-3px);
}
.footer-col h4{
  color:var(--brand-accent);font-size:.95rem;font-weight:600;
  margin-bottom:18px;letter-spacing:.5px;
}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul a{
  color:rgba(255,255,255,.62);font-size:.92rem;
  transition:var(--transition);
  position:relative;
}
.footer-col ul a:hover{
  color:#fff;
  background-image:linear-gradient(var(--brand-accent),var(--brand-accent));
  background-repeat:no-repeat;
  background-size:0 2px;background-position:0 100%;
  animation:underline-in .3s forwards;
}
@keyframes underline-in{to{background-size:100% 2px;}}
.footer-contact li{
  display:flex;align-items:flex-start;gap:10px;
  font-size:.9rem;color:rgba(255,255,255,.62);
  margin-bottom:12px;line-height:1.6;
}
.footer-contact li i{color:var(--brand-accent);margin-top:4px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0;display:flex;justify-content:space-between;
  flex-wrap:wrap;gap:10px;
  font-size:.86rem;color:rgba(255,255,255,.4);
}
.footer-bottom a{color:rgba(255,255,255,.5);}
.footer-bottom a:hover{color:#fff;}

/* ── Responsive ── */
@media (max-width: 1199.98px){
  .process-grid{grid-template-columns:repeat(2,1fr);}
  .process-grid::before{display:none;}
  .process-step{margin-bottom:20px;}
  .cta-inner{padding:40px 32px;}
}
@media (max-width: 991.98px){
  .category-hero h1{font-size:2.4rem;}
  .featured-media{min-height:260px;}
  .featured-body{padding:36px 30px;}
  .featured-card{flex-direction:column;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width: 767.98px){
  .header-top{gap:12px;}
  .search-box{width:200px;}
  .category-hero{padding:56px 0 64px;}
  .category-hero h1{font-size:2rem;}
  .hero-stat-grid{gap:12px;}
  .hero-stat-card{padding:20px 16px;}
  .hero-stat-num{font-size:1.7rem;}
  .section-gap{padding:56px 0;}
  .section-title{font-size:1.6rem;}
  .process-grid{grid-template-columns:1fr 1fr;gap:16px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-inner{padding:32px 24px;}
  .cta-form{flex-direction:column;}
  .cta-form input{min-width:100%;}
  .btn-cta{width:100%;}
  .footer-bottom{flex-direction:column;text-align:center;align-items:center;}
  .hero-cta-group .btn-brand,.hero-cta-group .btn-ghost{flex:1;justify-content:center;}
}
@media (max-width: 575.98px){
  .container{padding-left:18px;padding-right:18px;}
  .header-right{gap:10px;width:100%;justify-content:space-between;}
  .search-box{order:3;width:100%;flex-basis:100%;}
  .lang-switch{font-size:.85rem;}
  .btn-brand{padding:10px 18px;font-size:.88rem;}
  .category-hero h1{font-size:1.7rem;letter-spacing:0;}
  .category-hero-sub{font-size:1rem;}
  .hero-stat-grid{grid-template-columns:1fr 1fr;}
  .featured-body h2{font-size:1.35rem;}
  .process-grid{grid-template-columns:1fr;}
  .process-icon{width:64px;height:64px;font-size:1.5rem;}
  .nav-tabs-list .nav-link{padding:9px 16px;font-size:.9rem;}
  .section-title{font-size:1.4rem;}
}

/* roulang page: article */
/* ============================
   设计变量
============================ */
:root {
    --compg-primary: #0E4D4B;
    --compg-primary-dark: #0A2E2C;
    --compg-primary-light: #1A6B65;
    --compg-accent: #E8A33D;
    --compg-accent-dark: #C98A2E;
    --compg-accent-light: #FDF2E3;
    --compg-bg: #F7F9F8;
    --compg-white: #FFFFFF;
    --compg-text: #1E2D2C;
    --compg-muted: #6B7A78;
    --compg-border: #E6ECEA;
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --radius-pill: 999px;
    --shadow-sm: 0 2px 8px rgba(10, 46, 44, 0.06);
    --shadow-md: 0 8px 24px rgba(10, 46, 44, 0.12);
    --shadow-lg: 0 12px 32px rgba(10, 46, 44, 0.16);
    --section-gap: 96px;
    --gradient-primary: linear-gradient(135deg, #0E4D4B 0%, #1A6B65 100%);
    --gradient-accent: linear-gradient(135deg, #E8A33D 0%, #C98A2E 100%);
    --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
}

/* ============================
   基础样式
============================ */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    font-family: var(--font-cn);
    color: var(--compg-text);
    background: var(--compg-bg);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
    font-size: 1rem;
}
img { max-width: 100%; height: auto; }
a { color: var(--compg-primary); }
a:hover { color: var(--compg-primary-light); }
a:focus-visible, button:focus-visible {
    outline: 2px solid var(--compg-accent);
    outline-offset: 3px;
    border-radius: 6px;
}
h1, h2, h3, h4, h5 {
    font-weight: 700;
    color: var(--compg-primary);
    line-height: 1.35;
}
.container { max-width: 1280px; }
.section-gap { padding: var(--section-gap) 0; }

/* ============================
   按钮
============================ */
.btn-brand {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 2px 8px rgba(14, 77, 75, 0.2);
}
.btn-brand:hover {
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 6px 16px rgba(14, 77, 75, 0.3);
}
.btn-accent {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--gradient-accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 11px 24px;
    font-size: 0.92rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.25s ease;
    box-shadow: 0 2px 8px rgba(232, 163, 61, 0.25);
}
.btn-accent:hover {
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 6px 18px rgba(232, 163, 61, 0.4);
}

/* ============================
   头部导航
============================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--compg-border);
    box-shadow: 0 2px 12px rgba(10, 46, 44, 0.04);
}
.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 0;
    gap: 16px;
}
.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}
.brand-mark {
    width: 44px;
    height: 44px;
    background: var(--gradient-primary);
    border-radius: 12px;
    color: #fff;
    font-size: 22px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Inter', sans-serif;
    letter-spacing: -1px;
    flex-shrink: 0;
}
.brand-text {
    font-size: 1.55rem;
    font-weight: 700;
    color: var(--compg-primary);
    letter-spacing: -0.5px;
    line-height: 1.2;
    white-space: nowrap;
}
.brand-part { color: var(--compg-accent); }
.header-right {
    display: flex;
    align-items: center;
    gap: 18px;
}
.search-box {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--compg-bg);
    border: 1px solid var(--compg-border);
    border-radius: var(--radius-pill);
    padding: 9px 18px;
    width: 280px;
    transition: width 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.search-box:focus-within {
    width: 320px;
    border-color: var(--compg-primary-light);
    box-shadow: 0 0 0 3px rgba(14, 77, 75, 0.08);
}
.search-box .search-icon { color: var(--compg-muted); font-size: 0.95rem; }
.search-box input {
    border: none;
    outline: none;
    background: transparent;
    font-size: 0.88rem;
    width: 100%;
    color: var(--compg-text);
}
.search-box input::placeholder { color: #9AA8A6; }
.lang-switch {
    font-size: 0.88rem;
    color: var(--compg-muted);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
    transition: color 0.2s;
}
.lang-switch:hover { color: var(--compg-primary); }
.nav-tabs-row {
    border-top: 1px solid var(--compg-border);
    background: #fff;
    padding: 0;
}
.nav-tabs-list {
    display: flex;
    align-items: center;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
    white-space: nowrap;
    padding: 8px 0;
}
.nav-tabs-list::-webkit-scrollbar { display: none; }
.nav-tabs-list .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    color: var(--compg-text);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    background: transparent;
    border: 1px solid transparent;
    transition: all 0.25s ease;
    margin: 0;
}
.nav-tabs-list .nav-link:hover {
    background: var(--compg-bg);
    color: var(--compg-primary);
}
.nav-tabs-list .nav-link.active {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 2px 10px rgba(14, 77, 75, 0.22);
}

/* ============================
   文章横幅
============================ */
.article-banner {
    position: relative;
    padding: 84px 0 72px;
    background-color: var(--compg-primary-dark);
    color: #fff;
    isolation: isolate;
    overflow: hidden;
}
.article-banner-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: -2;
}
.article-banner-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(10, 46, 44, 0.95) 10%, rgba(10, 46, 44, 0.78) 55%, rgba(14, 77, 75, 0.42) 100%);
    z-index: -1;
}
.article-banner-content { position: relative; z-index: 2; }
.breadcrumb-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.85rem;
    margin-bottom: 36px;
}
.breadcrumb-nav a {
    color: rgba(255, 255, 255, 0.72);
    text-decoration: none;
    transition: color 0.25s;
}
.breadcrumb-nav a:hover { color: var(--compg-accent); }
.breadcrumb-nav .sep { color: rgba(255, 255, 255, 0.35); }
.breadcrumb-nav .current { color: rgba(255, 255, 255, 0.92); }
.article-heading h1 {
    font-size: 2.25rem;
    font-weight: 700;
    line-height: 1.4;
    color: #fff;
    margin-bottom: 22px;
    max-width: 820px;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
    color: rgba(255, 255, 255, 0.78);
    font-size: 0.88rem;
}
.article-meta .meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.article-meta .meta-item i { color: var(--compg-accent); }

/* ============================
   文章主体
============================ */
.article-section { padding: 72px 0 96px; }
.article-inner {
    background: var(--compg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 48px 52px;
    border: 1px solid var(--compg-border);
}
.article-entry {
    max-width: 760px;
    font-size: 1.04rem;
    line-height: 1.85;
    color: var(--compg-text);
}
.article-entry h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--compg-primary);
    margin: 2.2rem 0 1.1rem;
    padding-top: 1rem;
    border-bottom: 1px solid var(--compg-border);
    padding-bottom: 0.6rem;
}
.article-entry h3 {
    font-size: 1.22rem;
    font-weight: 600;
    color: var(--compg-primary);
    margin: 1.8rem 0 0.8rem;
}
.article-entry p { margin-bottom: 1.4rem; }
.article-entry img {
    border-radius: 14px;
    box-shadow: var(--shadow-sm);
    margin: 1.2rem 0;
}
.article-entry blockquote {
    border-left: 4px solid var(--compg-accent);
    background: var(--compg-accent-light);
    padding: 1rem 1.4rem;
    border-radius: 0 12px 12px 0;
    margin: 1.6rem 0;
    color: var(--compg-muted);
}
.article-entry ul,
.article-entry ol {
    padding-left: 1.5rem;
    margin-bottom: 1.4rem;
}
.article-entry li { margin-bottom: 0.45rem; }
.article-entry table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.6rem 0;
    font-size: 0.95rem;
}
.article-entry table th,
.article-entry table td {
    border: 1px solid var(--compg-border);
    padding: 10px 14px;
}
.article-entry table th { background: var(--compg-bg); }
.article-entry pre {
    background: var(--compg-primary-dark);
    color: #e0e0e0;
    padding: 18px 22px;
    border-radius: 12px;
    overflow-x: auto;
    font-family: 'SF Mono', 'Consolas', monospace;
    font-size: 0.9rem;
    margin: 1.6rem 0;
}
.article-entry code {
    background: var(--compg-bg);
    padding: 3px 6px;
    border-radius: 6px;
    font-size: 0.9em;
}

/* ============================
   未找到内容
============================ */
.not-found-box {
    text-align: center;
    padding: 56px 24px;
    border: 2px dashed var(--compg-border);
    border-radius: var(--radius-lg);
    background: var(--compg-bg);
}
.not-found-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--compg-accent-light);
    color: var(--compg-accent-dark);
    font-size: 30px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
}
.not-found-box h3 { font-size: 1.3rem; margin-bottom: 10px; }
.not-found-box p { color: var(--compg-muted); margin-bottom: 20px; }

/* ============================
   文章底部导航
============================ */
.article-bottom-nav {
    border-top: 1px solid var(--compg-border);
    margin-top: 40px;
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}
.bottom-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-pill);
    background: var(--compg-bg);
    color: var(--compg-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border: 1px solid var(--compg-border);
    transition: all 0.25s ease;
}
.bottom-link:hover {
    background: var(--compg-primary);
    color: #fff;
    border-color: var(--compg-primary);
    box-shadow: 0 4px 12px rgba(14, 77, 75, 0.25);
}

/* ============================
   侧边栏
============================ */
.article-aside {
    position: sticky;
    top: 150px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.aside-card {
    background: var(--compg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px;
    border: 1px solid var(--compg-border);
}
.aside-card h3 {
    font-size: 1.08rem;
    font-weight: 600;
    color: var(--compg-primary);
    margin-bottom: 18px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--compg-border);
    display: flex;
    align-items: center;
    gap: 8px;
}
.aside-card h3 i { color: var(--compg-accent); }
.tag-list { display: flex; flex-wrap: wrap; gap: 0; }
.tag-pill {
    display: inline-block;
    background: var(--compg-bg);
    border: 1px solid var(--compg-border);
    color: var(--compg-muted);
    border-radius: var(--radius-pill);
    padding: 5px 16px;
    font-size: 0.82rem;
    margin: 6px 6px 0 0;
    transition: all 0.25s ease;
    cursor: pointer;
}
.tag-pill:hover {
    background: var(--compg-accent-light);
    border-color: var(--compg-accent);
    color: var(--compg-primary);
}
.related-list { display: flex; flex-direction: column; }
.related-item {
    display: flex;
    gap: 14px;
    padding: 12px 0;
    text-decoration: none;
    border-bottom: 1px dashed var(--compg-border);
    transition: background 0.2s;
}
.related-item:last-child { border-bottom: none; }
.related-item:hover .related-title { color: var(--compg-primary); }
.related-item img {
    width: 76px;
    height: 60px;
    object-fit: cover;
    border-radius: 10px;
    flex-shrink: 0;
}
.related-title {
    display: block;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--compg-text);
    line-height: 1.5;
    margin-bottom: 6px;
    transition: color 0.2s;
}
.related-date {
    font-size: 0.78rem;
    color: var(--compg-muted);
}
.aside-cta {
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    color: #fff;
    position: relative;
    overflow: hidden;
    border: none;
}
.aside-cta::after {
    content: '';
    position: absolute;
    width: 150px;
    height: 150px;
    background: rgba(232, 163, 61, 0.2);
    border-radius: 50%;
    top: -50px;
    right: -40px;
    pointer-events: none;
}
.aside-cta h4 {
    font-size: 1.15rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}
.aside-cta p {
    font-size: 0.86rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 20px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}
.aside-cta .btn-accent { position: relative; z-index: 1; }

/* ============================
   页脚
============================ */
.site-footer {
    background: var(--compg-primary-dark);
    color: rgba(255, 255, 255, 0.72);
    padding-top: 72px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
}
.site-footer .brand-logo { margin-bottom: 18px; }
.site-footer .brand-text { color: #fff; }
.site-footer .brand-part { color: var(--compg-accent); }
.site-footer .brand-mark { background: var(--compg-accent); color: var(--compg-primary-dark); }
.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.92rem;
    line-height: 1.8;
    margin-top: 14px;
}
.footer-social { display: flex; gap: 12px; margin-top: 20px; }
.footer-social a {
    width: 38px;
    height: 38px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.25s ease;
}
.footer-social a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--compg-accent);
    border-color: var(--compg-accent);
}
.footer-col h4 {
    color: var(--compg-accent);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 18px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.88rem;
    transition: all 0.2s;
}
.footer-col ul a:hover {
    color: #fff;
    text-decoration: underline;
    text-decoration-color: var(--compg-accent);
    text-underline-offset: 4px;
}
.footer-contact li {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    font-size: 0.88rem;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 12px;
}
.footer-contact i { color: var(--compg-accent); margin-top: 3px; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.84rem;
    color: rgba(255, 255, 255, 0.45);
}
.footer-bottom a { color: rgba(255, 255, 255, 0.45); text-decoration: none; }
.footer-bottom a:hover { color: var(--compg-accent); }

/* ============================
   响应式
============================ */
@media (max-width: 991px) {
    .article-section { padding: 48px 0 72px; }
    .article-inner { padding: 32px; }
    .article-aside { position: static; margin-top: 36px; }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
    .search-box { width: 200px; }
}
@media (max-width: 767px) {
    :root { --section-gap: 56px; }
    .header-top { flex-wrap: wrap; padding: 10px 0; }
    .search-box { display: none; }
    .lang-switch { display: none; }
    .brand-text { font-size: 1.2rem; }
    .brand-mark { width: 38px; height: 38px; font-size: 19px; }
    .article-banner { padding: 52px 0 44px; }
    .article-heading h1 { font-size: 1.5rem; }
    .article-meta { gap: 14px; font-size: 0.82rem; }
    .article-inner { padding: 22px 20px; border-radius: 14px; }
    .article-entry { font-size: 1rem; line-height: 1.8; }
    .article-entry h2 { font-size: 1.25rem; }
    .article-entry h3 { font-size: 1.1rem; }
    .article-bottom-nav { flex-direction: column; align-items: stretch; }
    .bottom-link { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; align-items: center; text-align: center; }
    .breadcrumb-nav { margin-bottom: 24px; }
}
@media (max-width: 520px) {
    .header-right { gap: 10px; }
    .btn-brand { padding: 9px 16px; font-size: 0.84rem; }
    .footer-grid { gap: 24px; }
    .footer-bottom { font-size: 0.78rem; }
}