/* roulang page: index */
:root{--primary:#0B1B33;--primary-light:#1B2E4A;--accent:#C9A227;--accent-hover:#B08D1E;--bg:#F5F6F8;--surface:#FFFFFF;--text:#1A2233;--muted:#6B7280;--border:#E5E7EB;--radius-lg:18px;--radius-md:10px;--radius-sm:6px;--shadow-sm:0 2px 10px rgba(0,0,0,.05);--shadow-md:0 6px 20px rgba(11,27,51,.08);--shadow-lg:0 18px 40px rgba(11,27,51,.12);--transition:all .25s ease;--container:1200px}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--bg)}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-head{max-width:640px;margin-bottom:48px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-tag{display:inline-block;background:rgba(201,162,39,.1);color:var(--accent-hover);font-size:13px;font-weight:600;padding:4px 14px;border-radius:100px;margin-bottom:14px;letter-spacing:.5px}
.section-head h2{font-size:32px;line-height:1.3;font-weight:800;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:15px;padding:12px 28px;border-radius:50px;transition:var(--transition);border:2px solid transparent;outline:none}
.btn:focus-visible{outline:3px solid rgba(201,162,39,.5);outline-offset:2px}
.btn-accent{background:var(--accent);color:#0B1B33}
.btn-accent:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 8px 24px rgba(201,162,39,.35)}
.btn-outline{border-color:var(--accent);color:var(--accent-hover);background:transparent}
.btn-outline:hover{background:rgba(201,162,39,.1);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{background:rgba(255,255,255,.9);transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,0,0,.15)}
.badge{display:inline-block;font-size:12px;font-weight:600;padding:3px 12px;border-radius:100px;background:rgba(11,27,51,.06);color:var(--primary)}
.badge-accent{background:rgba(201,162,39,.15);color:#8B6E11}
.badge-light{background:rgba(255,255,255,.15);color:#fff;border:1px solid rgba(255,255,255,.3)}
.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--border);box-shadow:0 2px 12px rgba(0,0,0,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:40px;height:40px;border-radius:12px;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800}
.logo-text{font-size:18px;font-weight:800;color:var(--primary);letter-spacing:.5px;white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-link{padding:10px 16px;border-radius:100px;font-size:15px;font-weight:600;color:var(--muted);transition:var(--transition);white-space:nowrap}
.nav-link:hover{color:var(--primary);background:rgba(11,27,51,.05)}
.nav-link.active{color:var(--primary);background:rgba(11,27,51,.08);font-weight:700}
.header-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:40px;height:40px;align-items:center;justify-content:center;border-radius:8px;background:rgba(11,27,51,.05)}
.nav-toggle span{width:20px;height:2px;background:var(--primary);border-radius:2px;transition:var(--transition)}
.site-footer{background:var(--primary);color:rgba(255,255,255,.8);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px;padding-bottom:40px}
.footer-brand h3{font-size:18px;color:#fff;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:300px}
.footer-links h4{font-size:14px;color:#fff;margin-bottom:14px;font-weight:700}
.footer-links a{display:block;font-size:14px;padding:6px 0;opacity:.8;transition:var(--transition)}
.footer-links a:hover{opacity:1;padding-left:6px;color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;justify-content:space-between;align-items:center;font-size:13px;color:rgba(255,255,255,.5);flex-wrap:wrap;gap:8px}
.hero{position:relative;padding:120px 0 100px;background-size:cover;background-position:center;background-color:var(--primary)}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(11,27,51,.92) 0%,rgba(11,27,51,.75) 50%,rgba(11,27,51,.45) 100%)}
.hero-inner{position:relative;z-index:2;display:flex;align-items:center;gap:60px}
.hero-content{flex:1.2;color:#fff}
.hero-content h1{font-size:44px;line-height:1.25;font-weight:900;margin:18px 0 16px}
.hero-content p{font-size:17px;opacity:.85;max-width:520px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:36px}
.hero-stats{display:flex;gap:36px}
.hero-stats .stat{display:flex;flex-direction:column}
.hero-stats .stat strong{font-size:24px;font-weight:800;color:var(--accent)}
.hero-stats .stat span{font-size:13px;opacity:.7}
.hero-card{flex:0.8;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);border-radius:20px;padding:28px;backdrop-filter:blur(10px);min-width:300px}
.hero-card .score-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.hero-card .score{font-size:56px;font-weight:900;color:var(--accent)}
.hero-card .stars{color:var(--accent);font-size:18px}
.hero-card .label{font-size:13px;opacity:.7;color:#fff}
.hero-card .progress{padding:6px 0}
.hero-card .progress .bar{height:8px;background:rgba(255,255,255,.2);border-radius:6px;overflow:hidden;margin-top:6px}
.hero-card .progress .bar span{display:block;height:100%;background:var(--accent);border-radius:6px}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.feature-card img{width:100%;height:180px;object-fit:cover;border-radius:12px;margin-bottom:20px}
.feature-card h3{font-size:18px;margin-bottom:10px}
.feature-card p{color:var(--muted);font-size:14px;line-height:1.7}
.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.category-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;background:var(--surface);border:1px solid var(--border);transition:var(--transition);display:block}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.category-card img{width:100%;height:260px;object-fit:cover}
.category-card .category-info{padding:28px}
.category-card h3{font-size:22px;margin-bottom:8px}
.category-card p{color:var(--muted);font-size:14px;margin-bottom:16px;line-height:1.7}
.latest{background:var(--surface)}
.latest-list{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.latest-item{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;transition:var(--transition);display:flex;flex-direction:column;gap:8px}
.latest-item:hover{box-shadow:var(--shadow-md);transform:translateY(-3px)}
.latest-item h3{font-size:17px;line-height:1.4}
.latest-item h3 a:hover{color:var(--accent-hover)}
.latest-item p{color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.item-meta{display:flex;justify-content:space-between;align-items:center;margin-top:auto;font-size:13px;color:var(--muted)}
.item-meta a{color:var(--accent-hover);font-weight:600}
.empty-tip{grid-column:1/-1;text-align:center;color:var(--muted);padding:40px 0}
.stats-section{background:var(--primary) url('/assets/images/backpic/back-2.png') center/cover;padding:60px 0;position:relative}
.stats-section::before{content:"";position:absolute;inset:0;background:rgba(11,27,51,.82)}
.stats-section .container{position:relative;z-index:2}
.stats-card{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;color:#fff}
.stat-item{flex:1;min-width:120px;text-align:center;padding:20px}
.stat-item strong{display:block;font-size:36px;font-weight:900;color:var(--accent);margin-bottom:6px}
.stat-item span{font-size:14px;opacity:.75}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.step-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px;position:relative;transition:var(--transition)}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.step-num{font-size:40px;font-weight:900;color:rgba(201,162,39,.3);margin-bottom:12px;line-height:1}
.step-card h3{font-size:18px;margin-bottom:8px}
.step-card p{color:var(--muted);font-size:14px}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:14px;margin-bottom:12px;overflow:hidden;transition:var(--transition)}
.faq-item summary{display:flex;justify-content:space-between;align-items:center;padding:20px 24px;font-weight:600;cursor:pointer;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-size:22px;color:var(--accent);transition:var(--transition)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item p{padding:0 24px 20px;color:var(--muted);font-size:14px;line-height:1.8}
.cta-card{background:linear-gradient(120deg,var(--primary) 0%,var(--primary-light) 100%);border-radius:24px;padding:56px;text-align:center;color:#fff;position:relative;overflow:hidden}
.cta-card h2{font-size:32px;margin-bottom:12px}
.cta-card p{opacity:.8;margin-bottom:28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.page-banner{background-size:cover;background-position:center;color:#fff;padding:90px 0;position:relative}
.page-banner::before{content:"";position:absolute;inset:0;background:rgba(11,27,51,.78)}
.page-banner .container{position:relative;z-index:2}
.page-banner h1{font-size:38px;font-weight:900;margin-bottom:10px}
.page-banner p{opacity:.85;max-width:600px;font-size:16px}
.article-wrap{max-width:840px;margin:0 auto;background:var(--surface);border-radius:20px;padding:48px;border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.article-title{font-size:32px;line-height:1.35;font-weight:800;margin-bottom:16px}
.article-meta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:24px;color:var(--muted);font-size:14px}
.article-content{font-size:15px;line-height:1.9;color:#333}
.article-content h2,.article-content h3{margin:24px 0 12px}
.article-content p{margin-bottom:16px}
.article-content img{border-radius:12px;margin:16px 0}
.breadcrumb{font-size:14px;color:var(--muted);margin-bottom:20px}
.breadcrumb a:hover{color:var(--accent-hover)}
@media (max-width:1024px){
.hero-inner{flex-direction:column;gap:40px}
.hero-card{width:100%}
.features-grid,.steps-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:768px){
.main-nav{position:fixed;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:20px;gap:8px;border-bottom:1px solid var(--border);transform:translateY(-130%);transition:var(--transition);z-index:999;box-shadow:var(--shadow-md)}
.main-nav.open{transform:translateY(0)}
.nav-link{display:block;width:100%;text-align:center}
.nav-toggle{display:flex}
.logo-text{font-size:16px}
.hero{padding:80px 0}
.hero-content h1{font-size:30px}
.section{padding:56px 0}
.section-head h2{font-size:26px}
.features-grid,.category-grid,.latest-list,.steps-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr;gap:28px}
.stats-card{flex-direction:column;gap:12px}
.stat-item{min-width:auto}
.article-wrap{padding:28px}
.cta-card{padding:36px 24px}
.page-banner{padding:60px 0}
.page-banner h1{font-size:28px}
}
@media (max-width:520px){
.container{padding:0 16px}
.hero-content h1{font-size:24px}
.cta-card h2{font-size:22px}
.btn{padding:10px 20px;font-size:14px}
.section-head h2{font-size:22px}
.article-title{font-size:24px}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root {
  --primary: #16324f;
  --primary-deep: #0c1f33;
  --primary-soft: #eaf0f6;
  --accent: #c9a227;
  --accent-hover: #dbb63e;
  --accent-soft: #fbf3dd;
  --surface: #ffffff;
  --bg: #f5f7fa;
  --text: #1c2b3a;
  --text-weak: #62748c;
  --text-light: #a6b5c6;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 16px 40px rgba(18, 36, 60, 0.08);
  --shadow-card: 0 6px 20px rgba(18, 36, 60, 0.06);
  --shadow-accent: 0 10px 26px rgba(201, 162, 39, 0.3);
  --container: 1200px;
  --transition: all .25s ease;
}

/* ============ 基础 Reset ============ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  border: none;
  background: none;
  font-family: inherit;
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

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

/* ============ 通用板块 ============ */
.section {
  padding: 84px 0;
}

.section-alt {
  background: #fff;
}

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

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

.section-head .eyebrow {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 14px;
}

.section-head h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 700;
  color: var(--primary-deep);
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-weak);
  font-size: 16px;
}

/* ============ Header / 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(12, 31, 51, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--accent);
  color: var(--primary-deep);
  font-weight: 800;
  font-size: 15px;
  border-radius: 10px;
  letter-spacing: 1px;
}

.logo-text {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  font-weight: 500;
  padding: 9px 14px;
  border-radius: 8px;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.08);
}

.nav-link.active {
  color: var(--accent);
  font-weight: 600;
  background: rgba(201, 162, 39, 0.12);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 2px;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
  letter-spacing: 0.3px;
}

.btn-accent {
  background: var(--accent);
  color: var(--primary-deep);
  box-shadow: 0 4px 14px rgba(201, 162, 39, 0.25);
}

.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-accent);
}

.btn-outline {
  border: 1.5px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

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

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

.btn-white:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
}

.nav-toggle span {
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

/* ============ 分类 Banner ============ */
.page-banner {
  position: relative;
  background: linear-gradient(130deg, rgba(9, 20, 36, 0.94) 0%, rgba(22, 50, 79, 0.85) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
  color: #fff;
  padding: 92px 0 82px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 22px;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  transition: var(--transition);
}

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

.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(201, 162, 39, 0.18);
  border: 1px solid rgba(201, 162, 39, 0.35);
  color: var(--accent-hover);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.8px;
}

.banner-title {
  font-size: clamp(32px, 4.6vw, 46px);
  line-height: 1.25;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
  max-width: 780px;
  letter-spacing: 1px;
}

.banner-title span {
  color: var(--accent);
}

.banner-desc {
  font-size: 17px;
  color: rgba(255, 255, 255, 0.82);
  max-width: 660px;
  margin-bottom: 32px;
  line-height: 1.8;
}

.banner-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ============ 入口方式速览 ============ */
.entry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.entry-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.entry-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
  border-color: rgba(201, 162, 39, 0.45);
}

.entry-card-top {
  position: relative;
  height: 176px;
  overflow: hidden;
  flex-shrink: 0;
}

.entry-card-top img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.entry-card:hover .entry-card-top img {
  transform: scale(1.05);
}

.entry-card-top::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 31, 51, 0) 40%, rgba(12, 31, 51, 0.45) 100%);
}

.entry-order {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  background: rgba(12, 31, 51, 0.75);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 100px;
  letter-spacing: 1px;
  backdrop-filter: blur(6px);
}

.entry-rating {
  position: absolute;
  bottom: 14px;
  right: 14px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary-deep);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 100px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.entry-rating i {
  color: var(--accent);
  font-size: 12px;
}

.entry-card-body {
  padding: 22px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.entry-card-body h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary-deep);
  margin-bottom: 8px;
}

.entry-card-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.7;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--primary-soft);
  color: var(--primary);
}

.badge-accent {
  background: var(--accent-soft);
  color: var(--accent);
}

.badge-green {
  background: #e8f6f0;
  color: #177a55;
}

/* ============ 登录流程 ============ */
.flow-section {
  background: linear-gradient(135deg, rgba(10, 22, 39, 0.96) 0%, rgba(20, 45, 72, 0.92) 100%), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  color: #fff;
  padding: 92px 0;
}

.section-head.light .eyebrow {
  background: rgba(201, 162, 39, 0.15);
  color: var(--accent);
}

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

.section-head.light p {
  color: rgba(255, 255, 255, 0.7);
}

.flow-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-top: 20px;
  position: relative;
}

.flow-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 28px 22px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
  position: relative;
}

.flow-item:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-4px);
  border-color: rgba(201, 162, 39, 0.4);
}

.flow-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: var(--accent);
  color: var(--primary-deep);
  font-weight: 800;
  font-size: 15px;
  border-radius: 12px;
  margin-bottom: 18px;
}

.flow-item h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: #fff;
}

.flow-item p {
  font-size: 13px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.6);
}

/* ============ 入口对比 ============ */
.compare-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  padding: 28px;
  overflow: hidden;
}

.table-scroll {
  overflow-x: auto;
}

.cmp-table {
  width: 100%;
  min-width: 740px;
  border-collapse: collapse;
}

.cmp-table th,
.cmp-table td {
  padding: 16px 18px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid var(--border);
}

.cmp-table thead th {
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
}

.cmp-table thead th:first-child {
  border-top-left-radius: 12px;
}

.cmp-table thead th:last-child {
  border-top-right-radius: 12px;
}

.cmp-table tbody tr:last-child td {
  border-bottom: none;
}

.cmp-table tbody tr:hover td {
  background: var(--primary-soft);
}

.cmp-table .key-col {
  font-weight: 700;
  color: var(--primary-deep);
}

.cmp-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
}

.cmp-pill.high {
  background: #e8f6f0;
  color: #177a55;
}

.cmp-pill.medium {
  background: var(--accent-soft);
  color: var(--accent);
}

.cmp-pill.mid {
  background: #f0eafa;
  color: #6b4bb0;
}

/* ============ 数据指标 ============ */
.stats-section {
  background: var(--primary-deep);
  color: #fff;
  padding: 80px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.stat-item {
  text-align: center;
  padding: 32px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  transition: var(--transition);
}

.stat-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(201, 162, 39, 0.35);
}

.stat-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(201, 162, 39, 0.15);
  color: var(--accent);
  font-size: 20px;
}

.stat-number {
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  letter-spacing: 0.5px;
}

.stat-label {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  margin-top: 6px;
}

/* ============ 最新动态 ============ */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.article-item {
  display: flex;
  align-items: center;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 20px 24px;
  transition: var(--transition);
}

.article-item:hover {
  box-shadow: var(--shadow-card);
  transform: translateX(6px);
  border-color: rgba(201, 162, 39, 0.4);
}

.article-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  border-radius: 12px;
  background: var(--primary-soft);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.article-meta .badge {
  font-size: 11px;
}

.article-item h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  transition: var(--transition);
}

.article-item:hover h3 {
  color: var(--primary);
}

.article-item p {
  font-size: 14px;
  color: var(--text-weak);
  margin-top: 4px;
}

.article-arrow {
  margin-left: auto;
  color: var(--text-light);
  font-size: 18px;
  transition: var(--transition);
  flex-shrink: 0;
}

.article-item:hover .article-arrow {
  color: var(--accent);
  transform: translateX(4px);
}

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

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.faq-item.open {
  border-color: rgba(201, 162, 39, 0.5);
  box-shadow: var(--shadow-card);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  text-align: left;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question i {
  color: var(--accent);
  font-size: 14px;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question i {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--text-weak);
  line-height: 1.8;
  border-top: 1px dashed var(--border);
  margin: 0 24px 0;
  padding-left: 0;
  padding-right: 0;
}

.faq-item.open .faq-answer {
  display: block;
}

/* ============ CTA ============ */
.cta-section {
  position: relative;
  background: linear-gradient(120deg, var(--primary-deep) 0%, #1d4468 100%);
  padding: 76px 0;
  color: #fff;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(201, 162, 39, 0.25) 0%, transparent 70%);
  border-radius: 50%;
}

.cta-inner {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}

.cta-text h2 {
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
  margin-bottom: 10px;
}

.cta-text p {
  color: rgba(255, 255, 255, 0.7);
  max-width: 560px;
  font-size: 15px;
}

/* ============ Footer ============ */
.site-footer {
  background: #0a1622;
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.2fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
  max-width: 360px;
}

.footer-links h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 18px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.55);
  padding: 5px 0;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--accent);
  padding-left: 6px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  flex-wrap: wrap;
}

/* ============ 响应式 ============ */
@media (max-width: 1024px) {
  .entry-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .flow-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: rgba(12, 31, 51, 0.98);
    flex-direction: column;
    align-items: stretch;
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    box-shadow: 0 20px 30px rgba(0, 0, 0, 0.18);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .main-nav.open {
    max-height: 360px;
    padding: 12px 24px 20px;
  }

  .nav-link {
    padding: 13px 10px;
    font-size: 15px;
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 64px 0;
  }

  .page-banner {
    padding: 68px 0 60px;
  }

  .header-inner {
    height: 66px;
  }

  .main-nav {
    top: 66px;
  }

  .entry-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .entry-card {
    flex-direction: row;
  }

  .entry-card-top {
    width: 130px;
    height: auto;
    min-height: 150px;
    flex-shrink: 0;
  }

  .entry-card-body {
    padding: 18px;
  }

  .flow-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .flow-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
  }

  .flow-num {
    margin-bottom: 0;
    flex-shrink: 0;
  }

  .flow-item h3 {
    margin-bottom: 4px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  .article-item {
    padding: 16px;
    gap: 14px;
  }

  .article-item p {
    display: none;
  }

  .article-icon {
    width: 40px;
    height: 40px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }

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

  .logo-mark {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }

  .header-actions .btn-accent {
    padding: 9px 15px;
    font-size: 13px;
  }

  .nav-toggle {
    width: 38px;
    height: 38px;
  }

  .page-banner {
    padding: 56px 0 50px;
  }

  .banner-title {
    font-size: 28px;
  }

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

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

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

  .entry-card {
    flex-direction: column;
  }

  .entry-card-top {
    width: 100%;
    height: 172px;
  }

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

  .compare-wrap {
    padding: 14px;
  }

  .cmp-table th,
  .cmp-table td {
    padding: 12px 14px;
  }

  .article-item {
    flex-wrap: wrap;
  }

  .article-arrow {
    margin-left: auto;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* roulang page: article */
:root {
  --primary: #0b1f33;
  --primary-light: #123049;
  --accent: #c9a45c;
  --accent-hover: #dbb76e;
  --bg: #f5f4f1;
  --surface: #ffffff;
  --text: #1c2836;
  --text-weak: #5f6b7a;
  --border: #e8e3db;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 6px 24px rgba(11, 31, 51, 0.07);
  --shadow-hover: 0 14px 36px rgba(11, 31, 51, 0.12);
  --font: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
a { text-decoration: none; color: inherit; transition: color 0.25s ease; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
ul, ol { list-style: none; }

.site-header {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.18);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
  position: relative;
}
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: linear-gradient(135deg, #c9a45c, #e7c27f);
  color: #0b1f33;
  font-weight: 800;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: 0.5px;
}
.logo-text { color: #fff; font-size: 19px; font-weight: 700; letter-spacing: 1px; white-space: nowrap; }
.main-nav { display: flex; gap: 28px; align-items: center; }
.nav-link {
  color: rgba(255, 255, 255, 0.75);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 4px;
  border-radius: 6px;
  transition: all 0.25s ease;
  position: relative;
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: #fff; }
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}
.header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  border-radius: 10px;
  font-weight: 600;
  font-size: 15px;
  padding: 10px 22px;
  transition: all 0.25s ease;
  line-height: 1.4;
}
.btn-accent { background: var(--accent); color: #0b1f33; }
.btn-accent:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(201, 164, 92, 0.35);
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover {
  background: var(--primary-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(11, 31, 51, 0.3);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.6);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: 6px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle:focus { outline: 2px solid rgba(255, 255, 255, 0.5); outline-offset: 2px; }
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.article-hero {
  position: relative;
  padding: 72px 0 64px;
  background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
}
.article-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(8, 22, 36, 0.94) 0%, rgba(8, 22, 36, 0.78) 55%, rgba(8, 22, 36, 0.4) 100%);
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.65);
  font-size: 13px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.7); }
.breadcrumb a:hover { color: var(--accent-hover); }
.breadcrumb span { white-space: nowrap; }
.badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 14px;
  border-radius: 999px;
  background: var(--accent);
  color: #0b1f33;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.5;
}
.badge-soft {
  background: rgba(201, 164, 92, 0.14);
  color: #a47c2e;
  border: 1px solid rgba(201, 164, 92, 0.45);
  font-weight: 600;
}
.article-hero h1 {
  color: #fff;
  font-size: 40px;
  line-height: 1.32;
  font-weight: 800;
  margin: 18px 0;
  max-width: 860px;
  letter-spacing: 0.5px;
}
.article-meta {
  display: flex;
  gap: 20px;
  color: rgba(255, 255, 255, 0.78);
  font-size: 14px;
  flex-wrap: wrap;
}
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }

.article-main { padding: 50px 0 62px; }
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 40px;
  align-items: start;
}
.article-content {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 46px 50px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.content-body { font-size: 16.5px; line-height: 2; color: #2a3441; word-break: break-word; }
.content-body p { margin-bottom: 18px; }
.content-body h2 {
  font-size: 25px;
  margin: 36px 0 16px;
  color: var(--primary);
  font-weight: 750;
  border-left: 4px solid var(--accent);
  padding-left: 14px;
  line-height: 1.4;
}
.content-body h3 {
  font-size: 21px;
  margin: 28px 0 12px;
  color: var(--primary);
  font-weight: 700;
}
.content-body h4 {
  font-size: 18px;
  margin: 22px 0 10px;
  color: var(--primary);
  font-weight: 700;
}
.content-body ul, .content-body ol { margin: 0 0 20px; padding-left: 24px; }
.content-body ul li { list-style: disc; margin-bottom: 8px; }
.content-body ol li { list-style: decimal; margin-bottom: 8px; }
.content-body a { color: #b07a1d; text-decoration: underline; text-underline-offset: 3px; }
.content-body a:hover { color: #7d5410; }
.content-body img { border-radius: 14px; margin: 24px 0; box-shadow: var(--shadow); }
.content-body blockquote {
  margin: 24px 0;
  padding: 16px 22px;
  background: rgba(201, 164, 92, 0.09);
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  color: #4a4f55;
  font-style: normal;
}
.content-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 14.5px;
}
.content-body table th,
.content-body table td {
  border: 1px solid var(--border);
  padding: 12px 14px;
  text-align: left;
}
.content-body table th { background: #f8f6f2; font-weight: 700; color: var(--primary); }
.article-tags {
  padding-top: 26px;
  margin-top: 34px;
  border-top: 1px solid var(--border);
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.empty-state {
  text-align: center;
  padding: 70px 20px 50px;
}
.empty-state h2 {
  font-size: 30px;
  color: var(--primary);
  margin-bottom: 12px;
  font-weight: 800;
}
.empty-state p {
  color: var(--text-weak);
  font-size: 16px;
  margin-bottom: 28px;
}

.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.side-card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}
.side-card h3 {
  font-size: 16px;
  font-weight: 750;
  color: var(--primary);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.side-card h3::after {
  content: "";
  flex: 1;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  border-radius: 2px;
}
.side-item {
  display: flex;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--border);
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
  transition: all 0.2s ease;
}
.side-item:last-child { border-bottom: none; padding-bottom: 0; }
.side-item .side-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-top: 10px;
  flex-shrink: 0;
}
.side-item:hover { color: var(--primary); transform: translateX(4px); }
.side-link {
  display: block;
  padding: 11px 0;
  color: var(--text);
  font-size: 14.5px;
  border-bottom: 1px dashed var(--border);
  transition: all 0.2s ease;
}
.side-link:last-child { border-bottom: none; padding-bottom: 0; }
.side-link:hover {
  color: var(--accent);
  padding-left: 6px;
  font-weight: 600;
}

.score-card {
  background: linear-gradient(140deg, #0b1f33, #173b57);
  border-radius: var(--radius);
  padding: 26px;
  color: #fff;
  border: none;
  box-shadow: 0 10px 28px rgba(11, 31, 51, 0.25);
}
.score-card h3 { color: #fff; margin-bottom: 18px; }
.score-card h3::after { background: linear-gradient(90deg, var(--accent), transparent); }
.score-list { display: flex; flex-direction: column; gap: 14px; }
.score-row { display: flex; align-items: center; justify-content: space-between; font-size: 13px; color: rgba(255, 255, 255, 0.85); gap: 10px; }
.score-row span { flex-shrink: 0; }
.score-label { min-width: 64px; }
.score-bar {
  height: 5px;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 5px;
  flex: 1;
  overflow: hidden;
}
.score-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, #c9a45c, #e7c27f);
  border-radius: 5px;
}
.score-val { font-weight: 800; color: #e7c27f; font-size: 14px; }

.related-section {
  background: #ece8e2;
  padding: 64px 0 72px;
}
.section-head { margin-bottom: 34px; }
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.3px;
}
.section-head p {
  color: var(--text-weak);
  margin-top: 6px;
  font-size: 15px;
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.related-card {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
  display: block;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.related-cover { height: 180px; overflow: hidden; background: #e8e2d9; }
.related-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.45s ease; }
.related-card:hover .related-cover img { transform: scale(1.05); }
.related-info { padding: 22px; }
.related-info .badge { margin-bottom: 10px; }
.related-info h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 10px 0 8px;
  line-height: 1.5;
  color: var(--primary);
  transition: color 0.2s ease;
}
.related-card:hover .related-info h3 { color: #a47c2e; }
.related-info p {
  font-size: 13.5px;
  color: var(--text-weak);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.faq-section { padding: 72px 0; }
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.faq-item {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 26px 28px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}
.faq-item:hover {
  box-shadow: var(--shadow-hover);
  border-color: rgba(201, 164, 92, 0.5);
  transform: translateY(-3px);
}
.faq-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  display: flex;
  gap: 10px;
  align-items: baseline;
}
.faq-item h3::before {
  content: "Q";
  color: var(--accent);
  font-weight: 800;
  flex-shrink: 0;
}
.faq-item p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
}

.cta-section {
  position: relative;
  padding: 72px 0;
  background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
}
.cta-section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(8, 22, 36, 0.84);
}
.cta-box {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 660px;
  margin: 0 auto;
  color: #fff;
}
.cta-box h2 {
  font-size: 31px;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.cta-box p {
  color: rgba(255, 255, 255, 0.82);
  font-size: 15px;
  margin-bottom: 28px;
}
.cta-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.site-footer {
  background: #0a1c2d;
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand h3 {
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: 0.5px;
}
.footer-brand p {
  font-size: 14px;
  max-width: 360px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.65);
}
.footer-links h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
}
.footer-links a {
  display: block;
  padding: 5px 0;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
  transition: all 0.2s ease;
}
.footer-links a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding: 18px 0;
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  color: rgba(255, 255, 255, 0.55);
}

@media (max-width: 1024px) {
  .article-layout {
    grid-template-columns: minmax(0, 1fr) 290px;
    gap: 28px;
  }
  .article-content { padding: 38px 36px; }
  .related-grid { gap: 18px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .article-hero h1 { font-size: 34px; }
}

@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .logo-text { font-size: 17px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--primary);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 24px 18px;
    box-shadow: 0 16px 30px rgba(0, 0, 0, 0.25);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
  .main-nav.open { display: flex; }
  .main-nav .nav-link {
    padding: 13px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 15.5px;
  }
  .nav-link.active::after { display: none; }
  .nav-link.active { color: var(--accent); }
  .nav-toggle { display: flex; }
  .header-actions .btn-accent { display: none; }

  .article-hero { padding: 54px 0 48px; }
  .article-hero h1 { font-size: 29px; }
  .article-layout { grid-template-columns: 1fr; }
  .article-content { padding: 30px 24px; }
  .content-body { font-size: 15.5px; }
  .related-grid { grid-template-columns: 1fr 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .logo-mark { width: 36px; height: 36px; font-size: 13px; border-radius: 9px; }
  .logo-text { font-size: 16px; letter-spacing: 0; }
  .article-hero { padding: 44px 0 40px; }
  .breadcrumb { font-size: 12px; margin-bottom: 18px; }
  .article-hero h1 { font-size: 24px; }
  .article-meta { gap: 12px; font-size: 13px; }
  .badge { padding: 4px 12px; font-size: 11px; }
  .article-main { padding: 36px 0 48px; }
  .article-content { padding: 24px 18px; border-radius: 16px; }
  .content-body { font-size: 15px; line-height: 1.9; }
  .content-body h2 { font-size: 21px; }
  .content-body h3 { font-size: 18px; }
  .content-body table { font-size: 13px; }
  .content-body table th,
  .content-body table td { padding: 9px 8px; }
  .side-card { padding: 22px 18px; }
  .related-grid { grid-template-columns: 1fr; }
  .related-cover { height: 200px; }
  .section-head h2 { font-size: 25px; }
  .faq-item { padding: 22px 20px; }
  .cta-box h2 { font-size: 24px; }
  .cta-buttons { flex-direction: column; align-items: center; }
  .cta-buttons .btn { width: 100%; max-width: 280px; }
  .footer-grid { gap: 24px; }
}

:focus-visible {
  outline: 3px solid rgba(201, 164, 92, 0.6);
  outline-offset: 2px;
  border-radius: 4px;
}

/* roulang page: category2 */
:root {
            --color-primary: #0b2545;
            --color-primary-light: #13315c;
            --color-accent: #f5a524;
            --color-accent-dark: #d68a0e;
            --color-bg: #f4f6fb;
            --color-surface: #ffffff;
            --color-dark: #081426;
            --color-text: #1c2233;
            --color-text-soft: #5b6478;
            --color-border: #e3e7f0;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(11, 37, 69, 0.06);
            --shadow-md: 0 12px 32px rgba(11, 37, 69, 0.09);
            --shadow-lg: 0 22px 54px rgba(11, 37, 69, 0.14);
            --container-width: 1200px;
            --space-section: 96px;
            --header-height: 76px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }

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

        button,
        input {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

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

        :focus-visible {
            outline: 3px solid rgba(245, 165, 36, 0.5);
            outline-offset: 2px;
        }

        .container {
            width: min(100% - 40px, var(--container-width));
            margin-inline: auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(227, 231, 240, 0.8);
            transition: box-shadow .3s ease, background .3s ease;
        }

        .site-header.is-scrolled {
            background: #fff;
            box-shadow: 0 6px 20px rgba(11, 37, 69, 0.06);
        }

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

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, #f5a524 0%, #e8890c 100%);
            color: #0b2545;
            font-weight: 800;
            font-size: 15px;
            letter-spacing: 1px;
            box-shadow: 0 8px 18px rgba(245, 165, 36, 0.3);
        }

        .logo-text {
            font-size: 19px;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: 0.5px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 9px 18px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text-soft);
            transition: background .2s ease, color .2s ease, box-shadow .2s ease;
        }

        .nav-link:hover {
            color: var(--color-primary);
            background: rgba(11, 37, 69, 0.06);
        }

        .nav-link.active {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 8px 20px rgba(11, 37, 69, 0.18);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 999px;
            font-weight: 700;
            font-size: 15px;
            line-height: 1.2;
            transition: transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, border-color .22s ease;
            border: 1.5px solid transparent;
            white-space: nowrap;
        }

        .btn:active {
            transform: translateY(0px) scale(0.98);
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-primary);
            border-color: var(--color-accent);
            box-shadow: 0 8px 22px rgba(245, 165, 36, 0.3);
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            box-shadow: 0 12px 28px rgba(245, 165, 36, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            box-shadow: 0 10px 26px rgba(11, 37, 69, 0.22);
        }

        .btn-primary:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-light);
            box-shadow: 0 14px 32px rgba(11, 37, 69, 0.3);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border-color: rgba(255, 255, 255, 0.45);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            padding: 10px;
            border-radius: 10px;
            background: rgba(11, 37, 69, 0.06);
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 4px;
            transition: transform .3s ease, opacity .3s ease;
        }

        .nav-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* hero banner */
        .category-hero {
            position: relative;
            padding: 110px 0 90px;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            color: #fff;
            isolation: isolate;
        }

        .category-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(108deg, rgba(8, 20, 38, 0.94) 0%, rgba(11, 37, 69, 0.78) 48%, rgba(11, 37, 69, 0.45) 100%);
        }

        .hero-inner {
            max-width: 860px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 26px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
        }

        .breadcrumb a:hover,
        .breadcrumb .current {
            color: var(--color-accent);
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(245, 165, 36, 0.14);
            border: 1px solid rgba(245, 165, 36, 0.5);
            color: var(--color-accent);
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
            backdrop-filter: blur(6px);
        }

        .category-hero h1 {
            font-size: clamp(30px, 4.4vw, 48px);
            line-height: 1.25;
            font-weight: 800;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }

        .category-hero h1 .accent {
            color: var(--color-accent);
        }

        .hero-desc {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.82);
            max-width: 680px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 56px;
        }

        .hero-stats {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 16px;
            max-width: 780px;
        }

        .hero-stat {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            backdrop-filter: blur(10px);
        }

        .hero-stat .num {
            display: block;
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.1;
        }

        .hero-stat .lbl {
            display: block;
            margin-top: 6px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 0.3px;
        }

        /* sections */
        .page-section {
            padding: var(--space-section) 0;
        }

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

        .bg-dark {
            background: var(--color-dark);
            color: #fff;
        }

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-accent-dark);
            font-size: 13px;
            font-weight: 800;
            letter-spacing: 1.2px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-tag::before {
            content: "";
            width: 26px;
            height: 3px;
            border-radius: 4px;
            background: var(--color-accent);
        }

        .section-title {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            line-height: 1.3;
            color: var(--color-text);
            margin-bottom: 14px;
        }

        .bg-dark .section-title {
            color: #fff;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-soft);
        }

        .bg-dark .section-desc {
            color: rgba(255, 255, 255, 0.7);
        }

        /* steps */
        .step-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 24px;
        }

        .step-card {
            position: relative;
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: 30px 26px;
            border: 1px solid var(--color-border);
            border-top: 4px solid var(--color-primary);
            box-shadow: var(--shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .step-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(11, 37, 69, 0.1);
            border-top-color: var(--color-accent);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: rgba(11, 37, 69, 0.06);
            color: var(--color-primary);
            font-size: 19px;
            font-weight: 800;
            margin-bottom: 20px;
            transition: background .25s ease, color .25s ease;
        }

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

        .step-card h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-text);
        }

        .step-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-soft);
        }

        .step-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
        }

        .step-link:hover {
            color: var(--color-accent-dark);
        }

        /* feature cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, minmax(0, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform .25s ease, box-shadow .25s ease;
        }

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

        .feature-thumb {
            height: 160px;
            overflow: hidden;
        }

        .feature-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

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

        .feature-body {
            padding: 22px;
        }

        .feature-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: rgba(245, 165, 36, 0.14);
            color: var(--color-accent-dark);
            font-size: 17px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .feature-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--color-text);
        }

        .feature-body p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--color-text-soft);
        }

        /* latest content */
        .content-split {
            display: grid;
            grid-template-columns: 1.05fr 1fr;
            gap: 32px;
            align-items: stretch;
        }

        .featured-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow .25s ease, transform .25s ease;
        }

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

        .featured-card .thumb {
            height: 260px;
            overflow: hidden;
        }

        .featured-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

        .featured-card:hover .thumb img {
            transform: scale(1.03);
        }

        .featured-body {
            padding: 30px;
        }

        .featured-body .tag {
            display: inline-block;
            background: rgba(245, 165, 36, 0.14);
            color: var(--color-accent-dark);
            padding: 5px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .featured-body h3 {
            font-size: 22px;
            font-weight: 800;
            line-height: 1.4;
            margin-bottom: 14px;
        }

        .featured-body p {
            font-size: 15px;
            line-height: 1.8;
            color: var(--color-text-soft);
            margin-bottom: 20px;
        }

        .featured-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 14px;
            color: var(--color-text-soft);
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .article-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 16px;
            box-shadow: var(--shadow-sm);
            transition: transform .22s ease, box-shadow .22s ease;
        }

        .article-item:hover {
            transform: translateX(-6px);
            box-shadow: var(--shadow-md);
        }

        .article-thumb {
            width: 88px;
            height: 88px;
            flex-shrink: 0;
            border-radius: 12px;
            overflow: hidden;
        }

        .article-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .article-info {
            min-width: 0;
        }

        .article-info .tag-sm {
            display: inline-block;
            font-size: 12px;
            color: var(--color-accent-dark);
            background: rgba(245, 165, 36, 0.12);
            padding: 3px 10px;
            border-radius: 999px;
            margin-bottom: 6px;
            font-weight: 700;
        }

        .article-info h4 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .article-info span {
            font-size: 13px;
            color: var(--color-text-soft);
        }

        /* FAQ */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: box-shadow .25s ease, border-color .25s ease;
        }

        .faq-item.open {
            border-color: rgba(245, 165, 36, 0.4);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            width: 100%;
            padding: 22px 26px;
            text-align: left;
            font-size: 16px;
            font-weight: 700;
            color: var(--color-text);
            background: transparent;
            border: none;
        }

        .faq-question .icon {
            flex-shrink: 0;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            background: rgba(11, 37, 69, 0.06);
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            transition: background .25s ease, color .25s ease, transform .3s ease;
        }

        .faq-item.open .faq-question .icon {
            background: var(--color-accent);
            color: var(--color-primary);
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease, padding .35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 420px;
        }

        .faq-answer p {
            padding: 0 26px 24px;
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-soft);
            border-top: 1px solid var(--color-border);
            padding-top: 18px;
        }

        /* CTA */
        .cta-band {
            position: relative;
            padding: 88px 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            color: #fff;
            isolation: isolate;
        }

        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(115deg, rgba(8, 20, 38, 0.95) 0%, rgba(11, 37, 69, 0.82) 60%, rgba(11, 37, 69, 0.55) 100%);
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
        }

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

        .cta-content h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .cta-content p {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.72);
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            flex-shrink: 0;
        }

        /* footer */
        .site-footer {
            background: var(--color-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 28px;
        }

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

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.85;
            max-width: 360px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links h4 {
            font-size: 15px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .footer-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color .2s ease, transform .2s ease;
        }

        .footer-links a:hover {
            color: var(--color-accent);
            transform: translateX(4px);
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
        }

        /* responsive */
        @media (max-width: 1024px) {
            .step-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .feature-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }

            .content-split {
                grid-template-columns: 1fr;
            }

            .hero-stats {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
        }

        @media (max-width: 860px) {
            .header-inner {
                gap: 12px;
            }

            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
                background: #fff;
                padding: 16px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: 0 20px 40px rgba(11, 37, 69, 0.12);
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                justify-content: center;
                padding: 14px 18px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .header-actions .btn-accent {
                display: none;
            }

            .category-hero {
                padding: 80px 0 60px;
            }

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

            .cta-actions {
                flex-wrap: wrap;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --space-section: 64px;
            }

            .container {
                width: min(100% - 32px, var(--container-width));
            }

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

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

            .hero-stats {
                grid-template-columns: 1fr;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .hero-desc {
                font-size: 15px;
            }

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

            .article-item {
                align-items: flex-start;
                flex-direction: row;
            }

            .article-thumb {
                width: 72px;
                height: 72px;
            }

            .article-info h4 {
                font-size: 14px;
            }

            .featured-card .thumb {
                height: 200px;
            }

            .featured-body {
                padding: 22px;
            }

            .faq-question {
                padding: 18px 18px;
                font-size: 15px;
            }

            .faq-answer p {
                padding-left: 18px;
                padding-right: 18px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }