/* roulang page: index */
:root{
  --primary:#0d3b66;--primary-dark:#082b4c;--primary-light:#1a5a94;
  --accent:#f4a340;--accent-light:#ffc374;--accent-dark:#d4841e;
  --bg:#f5f7fb;--bg-deep:#0b2c4a;--card:#fff;
  --text:#13293d;--muted:#5d6d7e;--border:#e2e8f0;
  --radius-lg:20px;--radius-md:14px;--radius-sm:10px;
  --shadow:0 8px 30px rgba(13,59,102,.08);
  --shadow-hover:0 16px 40px rgba(13,59,102,.15);
  --section:clamp(56px,6vw,88px);--container:1200px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:all .25s ease}
button,input{font-family:inherit}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.text-center{text-align:center}

/* 按钮 */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-weight:600;font-size:15px;line-height:1;border:2px solid transparent;cursor:pointer;transition:all .3s ease;justify-content:center}
.btn-primary{background:var(--accent);color:#13293d;border-color:var(--accent)}
.btn-primary:hover{background:var(--accent-light);border-color:var(--accent-light);transform:translateY(-2px);box-shadow:0 10px 24px rgba(244,163,64,.3)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px)}
.btn-dark{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-dark:hover{background:var(--primary-light);border-color:var(--primary-light);transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--primary);border-color:#fff}
.btn-light:hover{background:var(--bg);transform:translateY(-2px)}
.btn-lg{padding:16px 36px;font-size:16px;border-radius:60px}
.btn-sm{padding:10px 22px;font-size:14px}

/* Header导航 */
.site-header{position:relative;z-index:100;padding:20px 0 10px;background:transparent}
.nav-panel{background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.7);border-radius:24px;box-shadow:0 10px 40px rgba(13,59,102,.1);padding:14px 18px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;color:var(--primary);font-weight:800;font-size:20px;line-height:1.2;flex-shrink:0}
.logo-mark{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--primary),var(--primary-light));display:flex;align-items:center;justify-content:center;color:#fff;font-size:16px}
.logo-text{letter-spacing:.5px}
.nav-links{display:flex;gap:4px;flex-wrap:wrap}
.nav-link{padding:9px 20px;border-radius:30px;font-size:15px;font-weight:600;color:var(--muted);display:flex;align-items:center;gap:6px}
.nav-link i{font-size:14px;opacity:.8}
.nav-link:hover{color:var(--primary);background:rgba(13,59,102,.06)}
.nav-link.active{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(13,59,102,.3)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;background:none;border:none;font-size:22px;color:var(--primary);cursor:pointer;padding:6px 10px;border-radius:8px}
.nav-toggle:hover{background:rgba(13,59,102,.06)}

/* Hero */
.hero{position:relative;border-radius:32px;margin:10px 24px 0;min-height:520px;display:flex;align-items:center;overflow:hidden;background:linear-gradient(105deg,rgba(8,43,76,.94) 0%,rgba(13,59,102,.82) 45%,rgba(13,59,102,.35) 100%),url('/assets/images/backpic/back-1.png') center/cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 0%,rgba(8,43,76,.25) 100%)}
.hero-content{position:relative;z-index:2;padding:clamp(40px,6vw,80px) 0;max-width:760px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(244,163,64,.18);border:1px solid rgba(244,163,64,.4);color:#ffc374;font-size:14px;font-weight:600;padding:8px 18px;border-radius:50px;margin-bottom:22px}
.hero h1{font-size:clamp(36px,5vw,56px);color:#fff;line-height:1.15;font-weight:800;margin-bottom:20px;letter-spacing:1px}
.hero p{font-size:clamp(16px,2vw,20px);color:rgba(255,255,255,.85);margin-bottom:32px;max-width:640px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:clamp(24px,4vw,60px);margin-top:52px;padding-top:32px;border-top:1px solid rgba(255,255,255,.15)}
.hero-stat span{display:block;font-size:clamp(24px,3vw,34px);font-weight:800;color:#fff;line-height:1.2}
.hero-stat small{font-size:14px;color:rgba(255,255,255,.65)}
.hero-scroll{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.7);font-size:22px;animation:bounce 2s infinite}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* 板块通用 */
.section{padding:var(--section) 0}
.section-alt{background:#fff}
.section-dark{background:var(--bg-deep)}
.section-header{margin-bottom:clamp(32px,4vw,56px)}
.section-header .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--accent);letter-spacing:2px;text-transform:uppercase;margin-bottom:12px}
.section-header .eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}
.section-header h2{font-size:clamp(26px,3.6vw,38px);font-weight:800;color:var(--text);line-height:1.25;margin-bottom:12px}
.section-header p{color:var(--muted);font-size:16px;max-width:640px;margin:0 auto}
.text-white h2,.text-white p{color:#fff}
.text-white .section-header p{color:rgba(255,255,255,.7)}

/* 卡片 */
.feature-card{background:var(--card);border-radius:var(--radius-lg);padding:36px 30px;box-shadow:var(--shadow);border:1px solid var(--border);height:100%;transition:all .35s ease;position:relative;overflow:hidden}
.feature-card::after{content:"";position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--accent),var(--accent-light));transform:scaleX(0);transform-origin:left;transition:transform .4s ease}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.feature-card:hover::after{transform:scaleX(1)}
.feature-card .card-icon{width:56px;height:56px;border-radius:16px;background:linear-gradient(135deg,rgba(13,59,102,.1),rgba(13,59,102,.04));display:flex;align-items:center;justify-content:center;font-size:22px;color:var(--primary);margin-bottom:20px}
.feature-card h3{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--text)}
.feature-card p{color:var(--muted);font-size:15px;line-height:1.7}
.feature-card .card-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-weight:600;font-size:14px;color:var(--primary)}
.feature-card .card-link:hover{color:var(--accent)}

/* 分类入口大卡 */
.category-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;min-height:300px;display:flex;align-items:flex-end;box-shadow:var(--shadow);color:#fff;transition:all .35s ease}
.category-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-hover)}
.category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.category-card .overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(8,43,76,.15) 0%,rgba(8,43,76,.88) 90%)}
.category-card .content{position:relative;z-index:2;padding:28px 26px;width:100%}
.category-card .tag{display:inline-block;background:rgba(244,163,64,.9);color:#13293d;font-size:12px;font-weight:700;padding:5px 14px;border-radius:30px;margin-bottom:12px;letter-spacing:.5px}
.category-card h3{font-size:24px;font-weight:800;margin-bottom:8px}
.category-card p{font-size:14px;color:rgba(255,255,255,.85);margin-bottom:16px}
.category-card .btn{background:#fff;color:var(--primary);padding:10px 22px;font-size:14px;border-radius:40px}
.category-card .btn:hover{background:var(--accent);color:#13293d}

/* 数据条 */
.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:20px;padding:36px 20px;text-align:center;backdrop-filter:blur(6px);transition:all .35s ease}
.stat-item:hover{transform:translateY(-4px);border-color:var(--accent)}
.stat-item .num{font-size:clamp(28px,3.5vw,42px);font-weight:800;color:var(--accent);line-height:1.2;display:block}
.stat-item .label{font-size:14px;color:rgba(255,255,255,.7);margin-top:8px;letter-spacing:1px}

/* 资讯列表 */
.news-card{background:var(--card);border-radius:var(--radius-lg);box-shadow:var(--shadow);border:1px solid var(--border);padding:28px 24px;height:100%;display:flex;flex-direction:column;transition:all .3s ease}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(244,163,64,.4)}
.news-card .news-meta{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.news-card .tag{background:rgba(13,59,102,.08);color:var(--primary);font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px}
.news-card .date{color:var(--muted);font-size:13px;display:flex;align-items:center;gap:4px}
.news-card h3{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:10px;color:var(--text);flex:1}
.news-card h3:hover{color:var(--primary)}
.news-card p{font-size:14px;color:var(--muted);line-height:1.65;flex:1;margin-bottom:16px}
.news-card .read-more{font-weight:600;font-size:14px;color:var(--primary);display:inline-flex;align-items:center;gap:5px}
.news-card .read-more:hover{color:var(--accent)}

/* 步骤 */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;counter-reset:step}
.step-card{position:relative;background:var(--card);border-radius:var(--radius-lg);padding:40px 28px 30px;box-shadow:var(--shadow);border:1px solid var(--border);transition:all .3s ease}
.step-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover)}
.step-card .step-num{font-size:48px;font-weight:800;color:rgba(13,59,102,.12);line-height:1;position:absolute;top:20px;right:24px}
.step-card .step-icon{width:50px;height:50px;border-radius:14px;background:linear-gradient(135deg,var(--accent),var(--accent-light));display:flex;align-items:center;justify-content:center;font-size:19px;color:#13293d;margin-bottom:18px}
.step-card h3{font-size:18px;font-weight:700;margin-bottom:8px}
.step-card p{color:var(--muted);font-size:14px}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{background:var(--card);border-radius:var(--radius-md);border:1px solid var(--border);box-shadow:var(--shadow);margin-bottom:14px;overflow:hidden;transition:all .3s ease}
.faq-item:hover{border-color:rgba(13,59,102,.2)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 26px;cursor:pointer;font-weight:600;font-size:16px;color:var(--text);list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"\f078";font-family:"Font Awesome 6 Free";font-weight:900;font-size:14px;color:var(--accent);transition:transform .3s ease}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item .faq-answer{padding:0 26px 22px;color:var(--muted);font-size:15px;line-height:1.7}

/* CTA */
.cta-section{background:linear-gradient(120deg,var(--primary) 0%,var(--primary-dark) 100%);border-radius:32px;margin:0 24px;padding:clamp(40px,6vw,64px);position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;top:-60px;right:-60px;width:200px;height:200px;border-radius:50%;background:rgba(244,163,64,.15)}
.cta-section::after{content:"";position:absolute;bottom:-80px;left:10%;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.05)}
.cta-content{position:relative;z-index:2;text-align:center;max-width:680px;margin:0 auto}
.cta-content h2{font-size:clamp(26px,3.5vw,38px);color:#fff;font-weight:800;margin-bottom:14px}
.cta-content p{color:rgba(255,255,255,.75);font-size:16px;margin-bottom:30px}
.cta-content .btn-group{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Footer */
.site-footer{background:var(--bg-deep);color:rgba(255,255,255,.7);padding:60px 0 0;margin-top:80px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.7;max-width:280px}
.footer-links h4,.footer-info h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px}
.footer-links a{display:block;padding:5px 0;font-size:14px;color:rgba(255,255,255,.65)}
.footer-links a:hover{color:var(--accent);transform:translateX(4px)}
.footer-info p{font-size:14px;margin-bottom:8px;line-height:1.5}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.45)}

/* 页面通用banner */
.page-banner{position:relative;border-radius:32px;margin:10px 24px 0;background:linear-gradient(110deg,rgba(8,43,76,.95) 0%,rgba(13,59,102,.8) 55%,rgba(13,59,102,.4) 100%),url('/assets/images/backpic/back-2.png') center/cover;color:#fff;padding:clamp(48px,6vw,80px) 0;overflow:hidden}
.page-banner h1{font-size:clamp(28px,4vw,42px);font-weight:800;margin-bottom:12px;line-height:1.2}
.page-banner p{font-size:16px;color:rgba(255,255,255,.75);max-width:600px;line-height:1.7}
.page-banner .breadcrumb{display:flex;gap:8px;align-items:center;font-size:14px;color:rgba(255,255,255,.6);margin-bottom:18px}
.page-banner .breadcrumb a{color:var(--accent)}
.page-banner .breadcrumb a:hover{color:#fff}

/* 分类页 */
.cat-intro{background:var(--card);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow);padding:36px;margin-top:-20px;position:relative;z-index:10}
.cat-intro .intro-icon{width:64px;height:64px;border-radius:18px;background:linear-gradient(135deg,var(--accent),var(--accent-light));display:flex;align-items:center;justify-content:center;font-size:26px;color:#13293d;margin-bottom:20px}
.cat-intro h2{font-size:24px;font-weight:800;margin-bottom:12px}
.cat-intro p{color:var(--muted);font-size:15px;line-height:1.75}

.info-list{background:var(--card);border-radius:var(--radius-lg);border:1px solid var(--border);box-shadow:var(--shadow);padding:0;list-style:none}
.info-list li{padding:20px 26px;border-bottom:1px solid var(--border);display:flex;gap:14px;align-items:flex-start;transition:background .3s}
.info-list li:last-child{border-bottom:none}
.info-list li:hover{background:rgba(13,59,102,.02)}
.info-list li i{color:var(--accent);margin-top:4px;font-size:16px}
.info-list li strong{display:block;font-size:15px;margin-bottom:4px}
.info-list li p{font-size:14px;color:var(--muted);line-height:1.6}

/* 文章页 */
.article-wrap{background:var(--card);border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--border);padding:clamp(28px,4vw,52px);margin-top:-20px;position:relative;z-index:10}
.article-header{border-bottom:1px solid var(--border);padding-bottom:28px;margin-bottom:32px}
.article-header .tag{display:inline-block;background:rgba(244,163,64,.15);color:var(--accent-dark);font-size:13px;font-weight:700;padding:6px 16px;border-radius:30px;margin-bottom:14px}
.article-header h1{font-size:clamp(24px,3vw,34px);font-weight:800;line-height:1.35;margin-bottom:14px;color:var(--text)}
.article-header .meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:14px}
.article-header .meta span{display:flex;align-items:center;gap:6px}
.article-content{font-size:16px;line-height:1.9;color:var(--text)}
.article-content p{margin-bottom:20px}
.article-content h2{font-size:24px;font-weight:700;margin:36px 0 16px;padding-left:16px;border-left:4px solid var(--accent)}
.article-content h3{font-size:20px;font-weight:700;margin:28px 0 12px}
.article-content ul,.article-content ol{padding-left:24px;margin-bottom:20px}
.article-content li{margin-bottom:8px}
.article-content blockquote{border-left:4px solid var(--accent);background:rgba(244,163,64,.07);padding:16px 20px;border-radius:0 12px 12px 0;margin:24px 0;font-style:italic}
.article-content img{border-radius:14px;margin:24px 0}
.article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.article-content a:hover{color:var(--accent)}

/* 相关推荐 */
.related-card{background:var(--card);border-radius:16px;border:1px solid var(--border);box-shadow:var(--shadow);padding:24px;transition:all .3s ease}
.related-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.related-card span{font-size:13px;color:var(--accent-dark);font-weight:600}
.related-card h3{font-size:16px;font-weight:700;margin-top:8px;line-height:1.5}
.related-card h3:hover{color:var(--primary)}

/* 响应式 */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .stats-row{grid-template-columns:repeat(2,1fr)}
  .steps-grid{grid-template-columns:repeat(3,1fr);gap:18px}
}
@media(max-width:768px){
  .nav-panel{flex-wrap:wrap}
  .nav-links{display:none;width:100%;flex-direction:column;padding-top:12px;border-top:1px solid var(--border)}
  .nav-links.open{display:flex}
  .nav-link{width:100%;justify-content:flex-start}
  .nav-toggle{display:block}
  .nav-actions{margin-left:auto}
  .hero{margin:10px 16px 0;min-height:440px;border-radius:24px}
  .steps-grid{grid-template-columns:1fr}
  .hero-stats{flex-wrap:wrap;gap:20px}
  .cta-section{margin:0 16px;padding:40px 24px;border-radius:24px}
  .page-banner{margin:10px 16px 0;border-radius:24px}
  .cat-intro{padding:24px}
  .article-wrap{padding:24px}
}
@media(max-width:520px){
  body{font-size:15px}
  .container{padding:0 16px}
  .nav-panel{padding:12px 14px;border-radius:20px}
  .logo-text{font-size:16px}
  .logo-mark{width:32px;height:32px;font-size:14px;border-radius:10px}
  .btn{padding:10px 20px;font-size:14px}
  .stats-row{grid-template-columns:1fr 1fr;gap:12px}
  .stat-item{padding:24px 14px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{justify-content:center}
  .section-header h2{font-size:26px}
  .article-header .meta{flex-direction:column;gap:8px}
}

/* roulang page: category1 */
:root {
  --primary: #1b3a5c;
  --primary-dark: #122b46;
  --primary-light: #2d5f8a;
  --accent: #d4a24e;
  --accent-soft: #f0e3c8;
  --bg: #f3f5f9;
  --surface: #ffffff;
  --text: #1c2e40;
  --text-weak: #66788c;
  --border: #e2e8f0;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 10px rgba(15, 35, 70, 0.06);
  --shadow-md: 0 10px 30px rgba(15, 35, 70, 0.09);
  --shadow-lg: 0 24px 60px rgba(15, 35, 70, 0.14);
  --transition: 0.28s ease;
  --font-main: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

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

button, input {
  font-family: inherit;
}

ul, ol {
  list-style: none;
}

.container {
  max-width: 1250px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ========== 按钮 ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  line-height: 1.4;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 6px 20px rgba(27, 58, 92, 0.28);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(27, 58, 92, 0.36);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 4px 14px rgba(27, 58, 92, 0.24);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #f8faff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 9px 20px;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 15px 36px;
  font-size: 1.02rem;
}

.btn:focus-visible, .nav-link:focus-visible, .nav-toggle:focus-visible, a:focus-visible {
  outline: 3px solid rgba(212, 162, 78, 0.5);
  outline-offset: 3px;
}

/* ========== Header ========== */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
  position: sticky;
  top: 0;
  z-index: 200;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: #fbfcfe;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 14px 10px 22px;
  box-shadow: var(--shadow-sm);
}

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

.logo-mark {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  box-shadow: 0 4px 12px rgba(27, 58, 92, 0.25);
}

.logo-text {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 0.02em;
}

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

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 0.92rem;
  color: var(--text-weak);
  font-weight: 500;
  position: relative;
  transition: all var(--transition);
}

.nav-link i {
  font-size: 0.85rem;
  transition: transform var(--transition);
}

.nav-link:hover {
  color: var(--primary);
  background: #eef2f8;
  transform: translateY(-1px);
}

.nav-link.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 4px 14px rgba(27, 58, 92, 0.24);
}

.nav-link.active:hover {
  color: #fff;
  transform: translateY(-1px) scale(1.02);
}

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

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--primary);
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition);
}

.nav-toggle:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

/* ========== Hero ========== */
.page-hero {
  position: relative;
  padding: 90px 0 100px;
  background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
  color: #fff;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(12, 30, 55, 0.94) 30%, rgba(20, 55, 95, 0.72) 65%, rgba(30, 75, 120, 0.55) 100%);
}

.page-hero .container {
  position: relative;
  z-index: 2;
}

.hero-inner {
  max-width: 760px;
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 28px;
}

.breadcrumb a {
  color: rgba(255,255,255,0.9);
  transition: color var(--transition);
}

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

.breadcrumb i {
  font-size: 0.7rem;
  opacity: 0.6;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(212, 162, 78, 0.2);
  border: 1px solid rgba(212, 162, 78, 0.4);
  color: #f5d8a0;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  margin-bottom: 22px;
}

.page-hero h1 {
  font-size: 2.8rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 0.02em;
}

.page-hero p {
  font-size: 1.06rem;
  color: rgba(255,255,255,0.82);
  line-height: 1.8;
  max-width: 650px;
  margin-bottom: 32px;
}

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

/* ========== 板块通用 ========== */
.section-block {
  padding: 88px 0;
}

.section-block-alt {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  color: #a07c2e;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 7px 18px;
  border-radius: 999px;
  margin-bottom: 18px;
  letter-spacing: 0.04em;
}

.section-head h2 {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 14px;
}

.section-head p {
  color: var(--text-weak);
  font-size: 1rem;
  line-height: 1.75;
}

/* ========== 登录方式卡片 ========== */
.method-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.method-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.method-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(27, 58, 92, 0.15);
}

.method-card .card-img {
  position: relative;
  height: 200px;
  overflow: hidden;
}

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

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

.method-card .card-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(15, 35, 60, 0.25), transparent 55%);
}

.card-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.08);
}

.method-card .card-body {
  padding: 26px 24px 28px;
}

.method-card h3 {
  font-size: 1.15rem;
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 10px;
}

.method-card p {
  color: var(--text-weak);
  font-size: 0.92rem;
  line-height: 1.7;
  margin-bottom: 16px;
}

.card-link {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}

.card-link:hover {
  gap: 10px;
  color: #a07c2e;
}

/* ========== 流程步骤 ========== */
.steps-section {
  background: var(--primary-dark);
  position: relative;
  color: #fff;
}

.steps-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
  opacity: 0.12;
}

.steps-section .container {
  position: relative;
  z-index: 1;
}

.steps-section .section-kicker {
  background: rgba(212, 162, 78, 0.15);
  color: var(--accent);
}

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

.steps-section .section-head p {
  color: rgba(255,255,255,0.65);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  counter-reset: step;
}

.step-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  position: relative;
  backdrop-filter: blur(4px);
  transition: all var(--transition);
}

.step-card:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(212, 162, 78, 0.4);
  transform: translateY(-6px);
}

.step-num {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--accent), #eec47a);
  color: #18324f;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 20px;
  box-shadow: 0 6px 18px rgba(212, 162, 78, 0.35);
}

.step-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.step-card p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.68);
  line-height: 1.65;
}

.step-arrow {
  position: absolute;
  top: 50%;
  right: -22px;
  transform: translateY(-50%);
  color: rgba(212,162,78,0.6);
  font-size: 1rem;
  z-index: 2;
}

.step-card:last-child .step-arrow {
  display: none;
}

/* ========== 准备清单 ========== */
.checklist-wrap {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 56px;
  align-items: center;
}

.checklist-visual {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.checklist-visual img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

.checklist-visual .visual-badge {
  position: absolute;
  bottom: 22px;
  left: 22px;
  right: 22px;
  background: rgba(255,255,255,0.94);
  border-radius: var(--radius);
  padding: 18px 22px;
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  gap: 14px;
  box-shadow: var(--shadow-md);
}

.checklist-visual .visual-badge i {
  font-size: 1.6rem;
  color: var(--accent);
}

.checklist-visual .visual-badge p {
  font-size: 0.92rem;
  color: var(--primary);
  font-weight: 600;
  line-height: 1.5;
}

.checklist-content h2 {
  font-size: 1.9rem;
  color: var(--primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.checklist-content > p {
  color: var(--text-weak);
  margin-bottom: 28px;
}

.checklist-items {
  display: grid;
  gap: 14px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.checklist-item:hover {
  border-color: rgba(27, 58, 92, 0.2);
  box-shadow: var(--shadow-sm);
  transform: translateX(4px);
}

.check-item-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #e9f5ec;
  color: #2ca46a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  flex-shrink: 0;
}

.checklist-item strong {
  font-size: 0.95rem;
  color: var(--text);
  display: block;
  margin-bottom: 2px;
}

.checklist-item span {
  font-size: 0.85rem;
  color: var(--text-weak);
}

/* ========== 安全要点 ========== */
.security-section {
  background: linear-gradient(180deg, var(--bg), #eef1f6);
}

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

.security-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  text-align: center;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.security-icon {
  width: 56px;
  height: 56px;
  border-radius: 18px;
  background: linear-gradient(135deg, #eef2f8, #e3eaf3);
  color: var(--primary);
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  transition: all var(--transition);
}

.security-card:hover .security-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 8px 20px rgba(27, 58, 92, 0.25);
  transform: scale(1.05);
}

.security-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.security-card p {
  font-size: 0.86rem;
  color: var(--text-weak);
  line-height: 1.65;
}

/* ========== FAQ ========== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}

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

.faq-item:hover {
  border-color: rgba(27, 58, 92, 0.25);
}

.faq-item.active {
  box-shadow: var(--shadow-md);
  border-color: rgba(27, 58, 92, 0.35);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  transition: color var(--transition);
}

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

.faq-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: #a07c2e;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  flex-shrink: 0;
  transition: all var(--transition);
}

.faq-item.active .faq-icon {
  background: var(--primary);
  color: #fff;
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.faq-item.active .faq-answer {
  max-height: 320px;
}

.faq-answer p {
  padding: 0 24px 22px;
  color: var(--text-weak);
  font-size: 0.93rem;
  line-height: 1.75;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin: 0 0 0 24px;
  padding-left: 0;
  padding-right: 24px;
}

/* ========== CTA ========== */
.cta-section {
  position: relative;
  padding: 100px 0;
  background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
  text-align: center;
  color: #fff;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 34, 60, 0.93), rgba(27, 58, 92, 0.8));
}

.cta-content {
  position: relative;
  z-index: 1;
  max-width: 640px;
  margin: 0 auto;
}

.cta-content h2 {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.02em;
}

.cta-content p {
  font-size: 1.02rem;
  color: rgba(255,255,255,0.75);
  margin-bottom: 34px;
  line-height: 1.75;
}

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

.cta-section .btn-primary {
  background: linear-gradient(135deg, var(--accent), #eec47a);
  color: #1b3350;
  box-shadow: 0 8px 24px rgba(212, 162, 78, 0.4);
}

.cta-section .btn-primary:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 30px rgba(212, 162, 78, 0.5);
}

.cta-section .btn-outline {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.4);
  color: #fff;
  backdrop-filter: blur(6px);
}

.cta-section .btn-outline:hover {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.7);
  color: #fff;
}

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

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand .logo-mark {
  background: linear-gradient(135deg, var(--accent), #eec47a);
  color: var(--primary-dark);
}

.footer-brand .logo-text {
  color: #fff;
}

.footer-brand p {
  font-size: 0.92rem;
  line-height: 1.75;
  margin-top: 14px;
  max-width: 300px;
  color: rgba(255,255,255,0.6);
}

.footer-links h4, .footer-info h4 {
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 18px;
  letter-spacing: 0.03em;
}

.footer-links a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  padding: 5px 0;
  transition: all var(--transition);
}

.footer-links a i {
  font-size: 0.6rem;
  opacity: 0.5;
}

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

.footer-info p {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.6);
  margin-bottom: 12px;
}

.footer-info p i {
  width: 24px;
  text-align: center;
  color: var(--accent);
}

.footer-bottom {
  padding: 22px 0;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin-top: 2px;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .method-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  .step-arrow {
    display: none;
  }
  .security-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
  .nav-panel {
    border-radius: 16px;
  }
  .nav-links {
    position: fixed;
    top: 76px;
    left: 20px;
    right: 20px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    gap: 8px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: all 0.3s ease;
    z-index: 300;
  }
  .nav-links.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-link {
    justify-content: flex-start;
    padding: 12px 16px;
  }
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
  .page-hero {
    padding: 64px 0 72px;
  }
  .page-hero h1 {
    font-size: 2rem;
  }
  .section-block {
    padding: 64px 0;
  }
  .section-head h2 {
    font-size: 1.6rem;
  }
  .checklist-wrap {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .checklist-visual img {
    height: 300px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 520px) {
  .container {
    padding: 0 16px;
  }
  .nav-panel {
    padding: 8px 12px;
    gap: 10px;
  }
  .logo-text {
    font-size: 0.95rem;
  }
  .logo-mark {
    width: 34px;
    height: 34px;
  }
  .nav-actions .btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
  }
  .page-hero h1 {
    font-size: 1.6rem;
    line-height: 1.35;
  }
  .page-hero p {
    font-size: 0.92rem;
  }
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  .hero-buttons .btn {
    width: 100%;
  }
  .section-block {
    padding: 52px 0;
  }
  .section-head {
    margin-bottom: 36px;
  }
  .section-head h2 {
    font-size: 1.4rem;
  }
  .method-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .security-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .checklist-visual img {
    height: 240px;
  }
  .checklist-content h2 {
    font-size: 1.45rem;
  }
  .faq-question {
    padding: 16px 18px;
    font-size: 0.9rem;
  }
  .cta-section {
    padding: 70px 0;
  }
  .cta-content h2 {
    font-size: 1.6rem;
  }
  .cta-buttons {
    flex-direction: column;
  }
  .cta-buttons .btn {
    width: 100%;
  }
}

/* roulang page: article */
:root {
  --primary: #2e5cff;
  --primary-dark: #1d47cc;
  --primary-light: #eef3ff;
  --secondary: #00b3a4;
  --secondary-light: #e0faf7;
  --accent: #ff8a3d;
  --bg: #f6f9fc;
  --bg-alt: #eef3f8;
  --dark: #0a1a2f;
  --text: #203047;
  --text-light: #5e7391;
  --border: #e2eaf2;
  --white: #ffffff;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(10, 26, 47, .06);
  --shadow-md: 0 6px 20px rgba(10, 26, 47, .08);
  --shadow-lg: 0 16px 40px rgba(10, 26, 47, .12);
  --transition: all .25s ease;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  margin: 0;
  padding: 0;
}
img { max-width: 100%; height: auto; display: inline-block; vertical-align: middle; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover, a:focus { color: var(--primary-dark); text-decoration: none; }
h1, h2, h3, h4, h5, h6 { margin: 0 0 .5em; line-height: 1.35; color: var(--dark); font-weight: 700; }
p { margin: 0 0 1em; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-tag {
  display: inline-block;
  padding: 6px 18px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(1.7rem, 4vw, 2.4rem); font-weight: 800; }
.section-head p { color: var(--text-light); font-size: 1.05rem; margin: 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary { background: var(--primary); color: var(--white); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-light { background: var(--white); color: var(--primary); }
.btn-light:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; color: var(--white); border-color: rgba(255,255,255,.7); }
.btn-outline:hover { background: rgba(255,255,255,.1); color: var(--white); border-color: var(--white); transform: translateY(-2px); }
.btn-sm { padding: 10px 20px; font-size: 14px; }

.site-header { position: sticky; top: 0; z-index: 1000; background: rgba(255,255,255,.92); backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.nav-panel { position: relative; display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 14px 0; }
.logo { display: inline-flex; align-items: center; gap: 10px; }
.logo-mark {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--white); font-size: 18px;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(46, 92, 255, .25);
}
.logo-text { font-size: 20px; font-weight: 800; color: var(--dark); letter-spacing: .5px; }
.nav-links { display: flex; align-items: center; gap: 8px; }
.nav-link {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px;
  border-radius: 30px;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
}
.nav-link i { font-size: 14px; color: var(--text-light); transition: var(--transition); }
.nav-link:hover { background: var(--primary-light); color: var(--primary); }
.nav-link:hover i { color: var(--primary); }
.nav-link.active { background: var(--primary); color: var(--white); font-weight: 600; }
.nav-link.active i { color: var(--white); }
.nav-actions { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none;
  background: var(--primary-light);
  border: none;
  color: var(--primary);
  width: 44px; height: 44px;
  border-radius: 12px;
  font-size: 18px;
  cursor: pointer;
  transition: var(--transition);
}
.nav-toggle:hover { background: var(--primary); color: var(--white); }

.page-hero {
  position: relative;
  padding: 90px 0 70px;
  background-size: cover;
  background-position: center;
  background-color: var(--dark);
  color: var(--white);
  text-align: center;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10, 26, 47, .88) 0%, rgba(46, 92, 255, .55) 100%);
}
.page-hero-content { position: relative; z-index: 1; max-width: 820px; margin: 0 auto; }
.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 30px;
  background: rgba(255,255,255,.15);
  color: var(--white);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  backdrop-filter: blur(8px);
  margin-bottom: 18px;
  border: 1px solid rgba(255,255,255,.2);
}
.page-hero h1 {
  color: var(--white);
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
  text-shadow: 0 2px 20px rgba(0,0,0,.2);
}
.page-hero p {
  color: rgba(255,255,255,.85);
  font-size: 1.1rem;
  max-width: 680px;
  margin: 0 auto;
}

.article-section { padding: 40px 0 80px; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-light);
  background: var(--white);
  border: 1px solid var(--border);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  margin-bottom: 30px;
  box-shadow: var(--shadow-sm);
}
.breadcrumb a { color: var(--text-light); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb i { font-size: 12px; color: #b8c6d9; }
.breadcrumb span:last-child { color: var(--primary); font-weight: 600; }

.article-layout { margin-top: 8px; }
.article-card {
  background: var(--white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  padding: 40px 36px;
  border: 1px solid var(--border);
}
.article-header { border-bottom: 1px solid var(--border); padding-bottom: 20px; margin-bottom: 28px; }
.article-header h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); font-weight: 800; margin-bottom: 12px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 20px; color: var(--text-light); font-size: 14px; }
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item i { color: var(--primary); }
.article-content { font-size: 16px; line-height: 1.9; }
.article-content h2 {
  font-size: 1.45rem;
  margin-top: 1.8em;
  margin-bottom: .8em;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
}
.article-content h3 { font-size: 1.25rem; margin-top: 1.5em; margin-bottom: .6em; }
.article-content p { margin-bottom: 1.25em; }
.article-content ul,
.article-content ol { margin: 1em 0 1.25em; padding-left: 1.6em; }
.article-content li { margin-bottom: .5em; }
.article-content img { border-radius: var(--radius-sm); box-shadow: var(--shadow-sm); margin: 1.5em 0; }
.article-content blockquote {
  border-left: 4px solid var(--secondary);
  background: var(--secondary-light);
  padding: 14px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 1.5em 0;
  color: var(--text);
}
.article-content blockquote p { margin: 0; }
.article-content code {
  background: var(--bg-alt);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: .9em;
  font-family: "SFMono-Regular", Consolas, monospace;
}
.article-content a { text-decoration: underline; text-underline-offset: 3px; }

.article-not-found {
  text-align: center;
  padding: 60px 20px;
}
.not-found-icon {
  width: 84px; height: 84px;
  margin: 0 auto 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 38px;
  border-radius: 50%;
}
.article-not-found h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 10px; }
.article-not-found p { color: var(--text-light); margin-bottom: 28px; }

.article-sidebar .sidebar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 26px 24px;
  margin-bottom: 24px;
}
.sidebar-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-light);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-card h3 i { color: var(--primary); font-size: 16px; }
.sidebar-card ul { list-style: none; margin: 0; padding: 0; }
.sidebar-card li { padding: 8px 0; border-bottom: 1px dashed var(--border); font-size: 15px; }
.sidebar-card li:last-child { border-bottom: none; }
.sidebar-card li a { color: var(--text); display: flex; align-items: center; gap: 8px; }
.sidebar-card li a::before { content: "\f105"; font-family: "Font Awesome 6 Free"; font-weight: 900; font-size: 12px; color: var(--primary); }
.sidebar-card li a:hover { color: var(--primary); padding-left: 4px; }
.service-list li { display: flex; align-items: center; gap: 10px; color: var(--text); }
.service-list li i { color: var(--secondary); font-size: 16px; width: 20px; text-align: center; }

.related-section { background: var(--bg-alt); }
.related-grid { margin-top: 10px; }
.content-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
}
.content-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--primary); }
.card-cover { position: relative; overflow: hidden; aspect-ratio: 16 / 10; background: var(--bg-alt); }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.content-card:hover .card-cover img { transform: scale(1.05); }
.card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(46, 92, 255, .9);
  color: var(--white);
  font-size: 12px;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  backdrop-filter: blur(6px);
}
.card-body { padding: 22px; }
.card-body h3 {
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--dark);
  transition: var(--transition);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.content-card:hover .card-body h3 { color: var(--primary); }
.card-body p {
  color: var(--text-light);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.card-meta { color: var(--text-light); font-size: 13px; display: inline-flex; align-items: center; gap: 6px; }
.card-meta i { color: var(--primary); }
.empty-tip {
  text-align: center;
  color: var(--text-light);
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  padding: 50px 20px;
  font-size: 16px;
}

.faq-section {}
.faq-grid { max-width: 980px; margin: 0 auto; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 16px;
  color: var(--dark);
  padding: 20px 56px 20px 24px;
  position: relative;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 12px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary i.fa-circle-question { color: var(--primary); }
.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--primary);
  transition: var(--transition);
}
.faq-item[open] summary::after { transform: translateY(-50%) rotate(180deg); }
.faq-item[open] summary { border-bottom: 1px solid var(--border); }
.faq-item p { padding: 18px 24px 20px; margin: 0; color: var(--text-light); font-size: 15px; }

.cta-section { padding: 70px 0 80px; }
.cta-panel {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  color: var(--white);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-panel::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  background: rgba(255,255,255,.06);
  border-radius: 50%;
  top: -80px;
  right: -80px;
}
.cta-panel::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  background: rgba(255,255,255,.05);
  border-radius: 50%;
  bottom: -60px;
  left: -40px;
}
.cta-panel h2 { color: var(--white); font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; margin-bottom: 14px; }
.cta-panel p { color: rgba(255,255,255,.88); font-size: 1.05rem; margin-bottom: 28px; }
.cta-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 16px; position: relative; z-index: 1; }
.cta-panel .btn-outline { border-color: rgba(255,255,255,.5); }

.site-footer { background: var(--dark); color: rgba(255,255,255,.75); padding: 70px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .logo-text { color: var(--white); }
.footer-brand p { margin-top: 16px; font-size: 14px; line-height: 1.8; color: rgba(255,255,255,.6); max-width: 300px; }
.footer-links h4, .footer-info h4 {
  color: var(--white);
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 18px;
}
.footer-links a {
  display: block;
  color: rgba(255,255,255,.6);
  font-size: 14px;
  padding: 5px 0;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--white); padding-left: 6px; }
.footer-info p { font-size: 14px; color: rgba(255,255,255,.6); margin-bottom: 10px; }
.footer-info p i { color: var(--secondary); margin-right: 10px; width: 18px; text-align: center; }
.footer-bottom { padding: 22px 0; text-align: center; font-size: 13px; color: rgba(255,255,255,.45); }
.footer-bottom p { margin: 0; }

@media (max-width: 1024px) {
  .section { padding: 60px 0; }
  .page-hero { padding: 70px 0 60px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .article-card { padding: 30px 24px; }
}
@media (max-width: 768px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .nav-panel { flex-wrap: wrap; }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    flex-direction: column;
    align-items: stretch;
    padding: 14px;
    gap: 4px;
  }
  .nav-links.open { display: flex; }
  .nav-link { justify-content: center; }
  .section { padding: 48px 0; }
  .page-hero { padding: 56px 0 48px; }
  .page-hero h1 { font-size: 1.7rem; }
  .page-hero p { font-size: 15px; }
  .article-card { padding: 24px 18px; }
  .article-header h2 { font-size: 1.4rem; }
  .article-meta { gap: 12px; }
  .article-content { font-size: 15px; }
  .cta-panel { padding: 40px 20px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; padding-bottom: 30px; }
  .footer-brand p { max-width: 100%; }
  .sidebar-card { margin-top: 20px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .btn { padding: 12px 20px; font-size: 14px; }
  .breadcrumb { font-size: 13px; padding: 10px 14px; }
  .breadcrumb i { display: none; }
  .article-card { padding: 20px 14px; }
  .faq-item summary { font-size: 15px; padding: 16px 48px 16px 16px; }
  .faq-item summary i { display: none; }
  .faq-item p { padding: 14px 16px 16px; }
  .cta-panel { padding: 32px 16px; border-radius: var(--radius); }
  .cta-panel p { font-size: 15px; }
  .cta-actions .btn { width: 100%; }
  .nav-actions .btn { display: none; }
  .logo-text { font-size: 17px; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
  --primary: #123c63;
  --primary-dark: #0a1f38;
  --primary-light: #1e5278;
  --accent: #00b8a9;
  --accent-hover: #00a397;
  --accent-soft: #e0f5f3;
  --bg: #f4f7fb;
  --bg-deep: #eef2f8;
  --white: #ffffff;
  --text: #1c2d40;
  --text-light: #64748b;
  --border: #e3eaf2;
  --radius: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 6px 24px rgba(10, 30, 56, 0.07);
  --shadow-lg: 0 16px 48px rgba(10, 30, 56, 0.12);
  --shadow-accent: 0 8px 24px rgba(0, 184, 169, 0.25);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container-width: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

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

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  transition: var(--transition);
  border: 2px solid transparent;
  outline: none;
}
.btn:focus-visible { outline: 3px solid rgba(0, 184, 169, 0.35); }
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(18, 60, 99, 0.25);
}
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(18, 60, 99, 0.3); }
.btn-primary:active { transform: translateY(0); }
.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-accent);
}
.btn-accent:hover { background: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 12px 36px rgba(0, 184, 169, 0.35); }
.btn-accent:active { transform: translateY(0); }
.btn-ghost {
  background: transparent;
  color: #fff;
  border-color: rgba(255, 255, 255, 0.6);
}
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 14px; }

/* ===== 通用板块 ===== */
.section { padding: 80px 0; }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 1px;
}
.section-head h2 { font-size: 36px; color: var(--text); margin: 16px 0 12px; line-height: 1.3; font-weight: 700; }
.section-head p { font-size: 17px; color: var(--text-light); line-height: 1.7; }

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 12px;
  z-index: 100;
  padding: 0;
}
.nav-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: var(--white);
  border-radius: 24px;
  padding: 14px 24px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  backdrop-filter: blur(12px);
  position: relative;
}
.logo { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 40px;
  height: 40px;
  background: var(--primary);
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  transition: var(--transition);
}
.logo:hover .logo-mark { background: var(--accent); transform: rotate(-8deg); }
.logo-text { font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: 0.5px; }
.nav-links { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 999px;
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
  transition: var(--transition);
  white-space: nowrap;
}
.nav-link i { font-size: 14px; opacity: 0.8; }
.nav-link:hover { background: var(--bg); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(18, 60, 99, 0.2); }
.nav-link.active:hover { background: var(--primary-light); color: #fff; }
.nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--bg);
  color: var(--text);
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover { background: var(--accent-soft); color: var(--accent); }
.nav-actions .btn { white-space: nowrap; }

/* ===== Hero ===== */
.hero-security {
  position: relative;
  background-size: cover;
  background-position: center;
  border-radius: 28px;
  margin: 16px 0 0;
  padding: 110px 0;
  overflow: hidden;
  isolation: isolate;
  box-shadow: var(--shadow-lg);
}
.hero-security::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, rgba(10, 31, 56, 0.92) 0%, rgba(10, 31, 56, 0.68) 50%, rgba(10, 31, 56, 0.28) 100%);
  z-index: -1;
}
.hero-content { max-width: 660px; color: #fff; padding: 24px 0; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.3);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
}
.hero-content h1 {
  font-size: 48px;
  line-height: 1.25;
  margin: 24px 0 18px;
  font-weight: 800;
  letter-spacing: 1px;
}
.hero-content p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
  max-width: 560px;
  margin-bottom: 36px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 16px; }

/* ===== 服务卡片 ===== */
.features-section { padding: 90px 0 70px; }
.feature-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 30px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: #c5d9e8; }
.feature-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: #fff;
  font-size: 22px;
  margin-bottom: 22px;
  transition: var(--transition);
}
.feature-card:hover .feature-icon { background: var(--accent); transform: scale(1.05); }
.feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 14px; color: var(--text); }
.feature-card p { color: var(--text-light); font-size: 15px; line-height: 1.75; }
.feature-card .feature-link {
  margin-top: auto;
  padding-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
  font-weight: 600;
  font-size: 14px;
  transition: var(--transition);
}
.feature-card .feature-link:hover { gap: 12px; color: var(--primary); }
.features-grid .cell { margin-bottom: 24px; }

/* ===== 数据指标 ===== */
.stats-wrapper { padding: 0 0 80px; }
.stats-section {
  background: var(--primary-dark);
  border-radius: 28px;
  padding: 64px 48px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.stats-section::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(0, 184, 169, 0.18) 0%, transparent 70%);
  border-radius: 50%;
}
.stats-head { text-align: center; margin-bottom: 44px; }
.stats-head h2 { font-size: 32px; margin-bottom: 10px; }
.stats-head p { color: rgba(255, 255, 255, 0.75); font-size: 16px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 2; }
.stat-item { text-align: center; padding: 20px 12px; }
.stat-num { font-size: 46px; font-weight: 800; color: var(--accent); line-height: 1.15; letter-spacing: -1px; }
.stat-label { margin-top: 10px; color: rgba(255, 255, 255, 0.82); font-size: 15px; }
.stat-divider { border-left: 1px solid rgba(255, 255, 255, 0.12); }

/* ===== 资讯卡片 ===== */
.news-section { background: var(--bg-deep); padding: 90px 0; }
.news-list { display: flex; flex-direction: column; gap: 24px; max-width: 920px; margin: 0 auto; }
.news-card {
  display: flex;
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.news-cover { width: 280px; flex-shrink: 0; overflow: hidden; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.news-card:hover .news-cover img { transform: scale(1.04); }
.news-body { padding: 30px 34px; display: flex; flex-direction: column; justify-content: center; gap: 12px; flex: 1; }
.news-meta { display: flex; gap: 18px; color: var(--text-light); font-size: 13px; }
.news-meta span { display: inline-flex; align-items: center; gap: 6px; }
.news-title { font-size: 21px; font-weight: 700; color: var(--text); line-height: 1.45; }
.news-desc { color: var(--text-light); font-size: 15px; line-height: 1.7; }
.news-tag {
  display: inline-flex;
  align-self: flex-start;
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
}

/* ===== 流程步骤 ===== */
.steps-section { padding: 90px 0; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step-item {
  position: relative;
  padding: 32px 28px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  transition: var(--transition);
  overflow: hidden;
}
.step-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.step-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--accent);
  opacity: 0.25;
  position: absolute;
  top: 16px;
  right: 20px;
  line-height: 1;
}
.step-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 18px;
}
.step-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.step-item p { color: var(--text-light); font-size: 14px; line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg-deep); padding: 90px 0; }
.faq-list { max-width: 780px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.faq-item:hover { border-color: #c5d9e8; }
.faq-item summary {
  padding: 22px 28px;
  font-weight: 600;
  font-size: 16px;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
  color: var(--text);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--primary); }
.faq-item summary::after {
  content: "\f078";
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 14px;
  color: var(--text-light);
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item[open] summary { border-bottom: 1px solid var(--border); color: var(--primary); }
.faq-item[open] summary::after { transform: rotate(180deg); color: var(--accent); }
.faq-answer { padding: 20px 28px 24px; color: var(--text-light); font-size: 15px; line-height: 1.85; }

/* ===== CTA ===== */
.cta-wrapper { padding: 0 0 80px; }
.cta-box {
  background: linear-gradient(130deg, var(--primary-dark) 0%, var(--primary-light) 100%);
  border-radius: 28px;
  padding: 68px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-box::before {
  content: "";
  position: absolute;
  left: -80px;
  bottom: -80px;
  width: 260px;
  height: 260px;
  background: radial-gradient(circle, rgba(0, 184, 169, 0.2), transparent 70%);
  border-radius: 50%;
}
.cta-box h2 { font-size: 32px; font-weight: 800; margin-bottom: 14px; }
.cta-box p { color: rgba(255, 255, 255, 0.85); max-width: 560px; margin: 0 auto 30px; font-size: 16px; line-height: 1.8; }
.cta-box .btn { position: relative; z-index: 2; }

/* ===== 页脚 ===== */
.site-footer { background: var(--primary-dark); padding: 70px 0 0; color: rgba(255, 255, 255, 0.85); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-brand .logo { margin-bottom: 18px; }
.footer-brand .logo-mark { background: var(--accent); }
.footer-brand .logo-text { color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.65); max-width: 320px; }
.footer-links h4, .footer-info h4 { color: #fff; font-size: 17px; font-weight: 700; margin-bottom: 22px; }
.footer-links a {
  display: block;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  padding: 6px 0;
  transition: var(--transition);
}
.footer-links a:hover { color: var(--accent); transform: translateX(4px); }
.footer-info p { font-size: 14px; margin-bottom: 12px; color: rgba(255, 255, 255, 0.65); }
.footer-info p i { color: var(--accent); margin-right: 10px; width: 16px; text-align: center; }
.footer-bottom { padding: 22px 0; text-align: center; font-size: 14px; color: rgba(255, 255, 255, 0.5); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .news-cover { width: 230px; }
}

@media (max-width: 768px) {
  body { font-size: 15px; }
  .container { padding: 0 18px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-link { justify-content: flex-start; padding: 12px 16px; }
  .nav-link + .nav-link { margin-top: 4px; }
  .nav-actions { gap: 8px; }
  .nav-actions .btn { display: none; }
  .hero-security { padding: 80px 24px; margin-top: 12px; }
  .hero-content h1 { font-size: 32px; }
  .hero-content p { font-size: 16px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 28px; }
  .stats-section { padding: 48px 24px; }
  .stats-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .stat-num { font-size: 36px; }
  .news-section, .faq-section { padding: 60px 0; }
  .news-card { flex-direction: column; }
  .news-cover { width: 100%; height: 200px; }
  .news-body { padding: 24px; }
  .news-title { font-size: 18px; }
  .steps-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 48px 24px; }
  .cta-box h2 { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 520px) {
  .site-header { top: 8px; }
  .nav-panel { padding: 10px 14px; border-radius: 18px; gap: 10px; }
  .logo-text { font-size: 16px; }
  .logo-mark { width: 36px; height: 36px; }
  .hero-security { padding: 60px 20px; border-radius: 20px; }
  .hero-content h1 { font-size: 28px; }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .hero-actions .btn { width: 100%; }
  .stats-grid { grid-template-columns: 1fr; gap: 16px; }
  .stats-section { border-radius: 20px; }
  .section-head h2 { font-size: 24px; }
  .step-item { padding: 24px; }
  .cta-box { border-radius: 20px; }
  .feature-card { padding: 28px 22px; }
  .footer-info p, .footer-links a { font-size: 14px; }
}