/* roulang page: index */
:root{
  --primary:#0b1f3a;--primary-light:#13294b;--accent:#f0a500;--accent-dark:#d49400;
  --accent-bg:#fff4df;--bg:#f5f7fb;--white:#fff;--text:#1a2332;--muted:#6b7a90;
  --border:#e3e8f0;--radius:16px;--radius-sm:10px;--shadow:0 2px 12px rgba(10,20,50,.08);
  --shadow-lg:0 12px 40px rgba(10,20,50,.12);--transition:all .3s ease;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'PingFang SC','Microsoft YaHei','Noto Sans SC',sans-serif;background:var(--bg);color:var(--text);line-height:1.7}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
input,textarea{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;border-radius:50px;font-size:15px;font-weight:600;transition:var(--transition);white-space:nowrap}
.btn:focus-visible{outline:3px solid rgba(240,165,0,.4);outline-offset:2px}
.btn-primary{background:var(--accent);color:var(--primary)}
.btn-primary:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(240,165,0,.35)}
.btn-outline{border:1.5px solid rgba(255,255,255,.7);color:#fff;background:rgba(255,255,255,.08)}
.btn-outline:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-dark{background:var(--primary);color:#fff}
.btn-dark:hover{background:var(--primary-light);transform:translateY(-2px)}
.btn-sm{padding:8px 20px;font-size:14px}
.badge{display:inline-block;padding:5px 14px;border-radius:30px;font-size:12px;font-weight:600;letter-spacing:.3px}
.badge-gold{background:var(--accent-bg);color:var(--accent-dark)}
.badge-blue{background:rgba(11,31,58,.08);color:var(--primary)}
/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);box-shadow:0 2px 20px rgba(10,20,50,.04)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#1e3a63);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:800}
.brand-name{font-size:20px;font-weight:800;color:var(--primary);letter-spacing:.5px}
.main-nav{display:flex;align-items:center;gap:36px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--muted);padding:8px 0}
.nav-link:hover{color:var(--primary)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{content:'';position:absolute;left:0;bottom:0;width:100%;height:3px;border-radius:3px;background:var(--accent)}
.header-actions{display:flex;align-items:center;gap:14px}
.search-box{position:relative;display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:50px;padding:0 16px;height:38px;width:220px;transition:var(--transition)}
.search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px rgba(240,165,0,.15)}
.search-box svg{width:16px;height:16px;color:var(--muted);flex-shrink:0}
.search-box input{border:none;outline:none;background:none;width:100%;padding:0 8px;font-size:14px}
.nav-toggle{display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--border);align-items:center;justify-content:center;font-size:20px}
/* Hero */
.hero{position:relative;min-height:640px;display:flex;align-items:center;background:linear-gradient(to right,rgba(8,20,45,.92),rgba(10,25,55,.75)),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;overflow:hidden}
.hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:120px;background:linear-gradient(to top,var(--bg),transparent)}
.hero-content{position:relative;z-index:2;max-width:680px;padding:80px 0}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 18px;border-radius:30px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);font-size:13px;letter-spacing:.5px;margin-bottom:24px}
.hero-title{font-size:48px;line-height:1.18;font-weight:800;letter-spacing:-1px;margin-bottom:20px}
.hero-title span{color:var(--accent)}
.hero-subtitle{font-size:18px;opacity:.88;max-width:540px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-note{display:flex;align-items:center;gap:20px;margin-top:36px;font-size:13px;opacity:.7}
.hero-note .dot{width:6px;height:6px;border-radius:50%;background:var(--accent)}
.hero-note span{display:inline-flex;align-items:center;gap:6px}
/* Stats */
.stats-bar{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);margin:-46px 0 0;position:relative;z-index:10}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:32px 24px}
.stat-item{text-align:center;position:relative}
.stat-item::after{content:'';position:absolute;right:0;top:50%;transform:translateY(-50%);width:1px;height:36px;background:var(--border)}
.stat-item:last-child::after{display:none}
.stat-number{font-size:36px;font-weight:800;color:var(--primary);line-height:1.2}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px}
/* Section */
.section{padding:76px 0}
.section-alt{background:var(--white)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:44px;flex-wrap:wrap}
.section-title{font-size:34px;font-weight:800;color:var(--primary);letter-spacing:-.5px;line-height:1.2}
.section-subtitle{font-size:16px;color:var(--muted);margin-top:8px;max-width:560px}
.section-more{font-size:14px;color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.section-more:hover{color:var(--accent-dark)}
/* Feature Cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:32px 28px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--accent),transparent);opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::before{opacity:1}
.feature-icon{width:56px;height:56px;border-radius:16px;background:var(--accent-bg);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px;color:var(--accent-dark)}
.feature-title{font-size:20px;font-weight:700;margin-bottom:10px;color:var(--primary)}
.feature-desc{font-size:14px;color:var(--muted);line-height:1.7}
/* Category Cards */
.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.category-card{position:relative;border-radius:var(--radius);overflow:hidden;min-height:280px;display:flex;align-items:flex-end;color:#fff;transition:var(--transition);box-shadow:var(--shadow)}
.category-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.category-card::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(8,18,40,.88),rgba(8,18,40,.25) 60%,transparent)}
.category-content{position:relative;z-index:2;padding:32px 28px;width:100%}
.category-title{font-size:24px;font-weight:800;margin-bottom:8px}
.category-desc{font-size:14px;opacity:.85;margin-bottom:20px;max-width:340px}
.category-link{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--accent)}
/* News List */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}
.news-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}
.news-cover{height:180px;overflow:hidden;position:relative}
.news-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.news-card:hover .news-cover img{transform:scale(1.06)}
.news-body{padding:20px 22px 24px}
.news-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--accent-dark);background:var(--accent-bg);padding:4px 12px;border-radius:20px;margin-bottom:12px}
.news-title{font-size:17px;font-weight:700;line-height:1.45;margin-bottom:10px;color:var(--primary);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card a:hover .news-title{color:var(--accent-dark)}
.news-summary{font-size:13px;color:var(--muted);line-height:1.65;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:#99a3b5}
.empty-tip{grid-column:1/-1;text-align:center;padding:50px;color:var(--muted);font-size:15px;background:var(--white);border-radius:var(--radius);border:1px dashed var(--border)}
/* Steps */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;counter-reset:steps}
.step-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);padding:36px 28px;position:relative;transition:var(--transition)}
.step-item:hover{box-shadow:var(--shadow);transform:translateY(-4px)}
.step-num{width:44px;height:44px;border-radius:14px;background:var(--primary);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;margin-bottom:18px}
.step-title{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--primary)}
.step-desc{font-size:14px;color:var(--muted)}
/* Feature Split */
.split-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split-media{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-lg)}
.split-media img{width:100%;height:100%;object-fit:cover;min-height:360px}
.split-content .section-title{font-size:30px;margin-bottom:16px}
.split-content .section-subtitle{font-size:15px;margin-bottom:24px}
.split-list{display:flex;flex-direction:column;gap:16px}
.split-list-item{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:var(--text);line-height:1.6}
.split-list-item .check{flex-shrink:0;width:22px;height:22px;border-radius:50%;background:var(--accent-bg);color:var(--accent-dark);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:2px}
/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:var(--accent);box-shadow:var(--shadow)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;font-size:16px;font-weight:600;color:var(--primary);cursor:pointer;user-select:none}
.faq-icon{width:28px;height:28px;border-radius:50%;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:16px;transition:var(--transition);color:var(--muted)}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--accent);color:#fff}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px}
.faq-item.open .faq-answer{max-height:300px;padding:0 24px 20px}
.faq-answer p{font-size:15px;color:var(--muted);line-height:1.75}
/* CTA */
.cta-section{background:linear-gradient(135deg,var(--primary),#1e3a63);border-radius:24px;margin-bottom:-44px;position:relative;z-index:10;text-align:center;padding:56px 40px;color:#fff;box-shadow:var(--shadow-lg)}
.cta-title{font-size:30px;font-weight:800;margin-bottom:12px}
.cta-subtitle{font-size:15px;opacity:.82;margin-bottom:28px}
.cta-actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
/* Footer */
.site-footer{background:var(--primary);color:#fff;padding:100px 0 40px;margin-top:44px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;margin-bottom:48px}
.footer-brand .brand-name{font-size:22px;color:#fff;font-weight:800}
.footer-brand p{font-size:14px;opacity:.7;margin-top:12px;line-height:1.7}
.footer-links h4,.footer-contact h4{font-size:16px;margin-bottom:16px;color:var(--accent)}
.footer-links a{display:block;font-size:14px;opacity:.72;margin-bottom:10px;transition:var(--transition)}
.footer-links a:hover{opacity:1;color:var(--accent);padding-left:6px}
.footer-contact p{font-size:14px;opacity:.72;margin-bottom:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:24px;display:flex;justify-content:space-between;align-items:center;font-size:13px;opacity:.6;flex-wrap:wrap;gap:10px}
/* Responsive */
@media(max-width:1024px){
  .main-nav{gap:20px}
  .search-box{width:180px}
  .feature-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
  .hero-title{font-size:40px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
  .header-inner{height:64px}
  .main-nav{position:fixed;top:64px;left:0;right:0;background:var(--white);flex-direction:column;align-items:flex-start;padding:20px 24px;gap:14px;border-bottom:1px solid var(--border);box-shadow:0 8px 24px rgba(10,20,50,.08);transform:translateY(-120%);transition:transform .35s ease;z-index:99}
  .main-nav.open{transform:translateY(0)}
  .nav-link{width:100%;padding:10px 0;border-bottom:1px solid var(--border)}
  .nav-link:last-child{border-bottom:none}
  .search-box{display:none}
  .nav-toggle{display:flex}
  .hero{min-height:520px}
  .hero-title{font-size:32px}
  .hero-subtitle{font-size:16px}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px;padding:28px 20px}
  .stat-item::after{display:none}
  .category-grid,.split-grid,.steps-grid{grid-template-columns:1fr}
  .section{padding:56px 0}
  .section-title{font-size:28px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .cta-section{padding:40px 24px}
  .cta-title{font-size:26px}
}
@media(max-width:520px){
  .hero{min-height:480px}
  .hero-title{font-size:26px}
  .brand-name{font-size:17px}
  .brand-mark{width:34px;height:34px;font-size:17px}
  .feature-grid,.news-grid{grid-template-columns:1fr}
  .hero-actions .btn{width:100%}
  .hero-actions{flex-direction:column}
  .footer-bottom{flex-direction:column;text-align:center}
}

/* roulang page: article */
:root{
  --primary:#d4a24e;
  --primary-dark:#b8893d;
  --primary-soft:rgba(212,162,78,.16);
  --bg:#0c0f14;
  --bg-soft:#111620;
  --card:#171c26;
  --card-hover:#1d232f;
  --border:#2a313e;
  --text:#eae7e0;
  --text-weak:#98958e;
  --text-mute:#6b6f78;
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 24px 70px rgba(0,0,0,.45);
  --shadow-sm:0 8px 26px rgba(0,0,0,.28);
  --transition:all .25s ease;
  --container:1200px;
  --header-h:74px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit;border:none;outline:none;background:none;color:inherit}
ul,ol{list-style:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 28px}
.site-header{
  position:sticky;top:0;z-index:100;height:var(--header-h);
  background:rgba(12,15,20,.82);backdrop-filter:blur(18px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;gap:28px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand-mark{
  width:38px;height:38px;border-radius:11px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--primary),#e6b96e);color:#131313;
  font-size:20px;font-weight:800;letter-spacing:.5px;box-shadow:0 4px 14px rgba(212,162,78,.35);
}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.5px;white-space:nowrap;color:var(--text)}
.main-nav{display:flex;align-items:center;gap:28px;margin:0 auto}
.main-nav .nav-link{
  font-size:15px;color:var(--text-weak);padding:8px 2px;position:relative;white-space:nowrap;
  font-weight:500;transition:var(--transition);border-bottom:2px solid transparent;
}
.main-nav .nav-link:hover{color:var(--text)}
.main-nav .nav-link.active{color:var(--primary);border-bottom-color:var(--primary)}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:auto;flex-shrink:0}
.search-box{
  display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.06);
  border:1px solid var(--border);border-radius:999px;padding:7px 15px;width:220px;
  transition:var(--transition);
}
.search-box svg{width:16px;height:16px;color:var(--text-mute);flex-shrink:0}
.search-box input{width:100%;font-size:14px;background:transparent;color:var(--text)}
.search-box input::placeholder{color:var(--text-mute)}
.search-box:focus-within{border-color:var(--primary);background:rgba(212,162,78,.08)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;
  font-weight:600;transition:var(--transition);cursor:pointer;white-space:nowrap;
}
.btn-primary{background:linear-gradient(135deg,var(--primary),#e2b365);color:#131313;padding:10px 26px;font-size:15px;box-shadow:0 6px 22px rgba(212,162,78,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(212,162,78,.42)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{
  border:1px solid var(--border);color:var(--text);padding:9px 24px;font-size:15px;background:rgba(255,255,255,.02);
}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}
.btn-sm{padding:7px 20px;font-size:14px}
.btn-lg{padding:13px 36px;font-size:16px}
.nav-toggle{display:none;font-size:24px;color:var(--text);padding:6px 8px;cursor:pointer;line-height:1}
.post-hero{
  position:relative;padding:92px 0 84px;overflow:hidden;
  background:linear-gradient(180deg,rgba(12,15,20,.88),rgba(12,15,20,.72)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom:1px solid var(--border);
}
.post-hero::after{content:"";position:absolute;inset:auto 0 0 0;height:120px;background:linear-gradient(180deg,transparent,var(--bg))}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-mute);margin-bottom:26px;flex-wrap:wrap;position:relative;z-index:2}
.breadcrumb a{color:var(--text-weak);transition:var(--transition)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-mute)}
.post-category{
  display:inline-flex;align-items:center;gap:6px;background:var(--primary-soft);
  border:1px solid rgba(212,162,78,.35);color:var(--primary);
  padding:5px 16px;border-radius:999px;font-size:14px;font-weight:600;margin-bottom:20px;position:relative;z-index:2;
}
.post-hero h1{
  position:relative;z-index:2;font-size:44px;line-height:1.22;letter-spacing:1px;font-weight:800;
  max-width:880px;margin-bottom:20px;color:#fff;text-shadow:0 4px 30px rgba(0,0,0,.35);
}
.post-hero .post-summary{
  position:relative;z-index:2;font-size:17px;color:rgba(255,255,255,.75);max-width:720px;margin-bottom:26px;
}
.post-hero .post-meta{
  position:relative;z-index:2;display:flex;align-items:center;gap:18px;font-size:14px;color:rgba(255,255,255,.56);flex-wrap:wrap;
}
.post-meta span{display:inline-flex;align-items:center;gap:6px}
.post-meta svg{width:15px;height:15px}

.post-layout{display:grid;grid-template-columns:minmax(0,1fr) 350px;gap:46px;padding:70px 0 60px}
.post-main{min-width:0}
.post-main .article-box{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:48px 52px;box-shadow:var(--shadow-sm);
}
.article-content{font-size:16px;line-height:1.95;color:var(--text)}
.article-content p{margin-bottom:1.6em}
.article-content h2{font-size:26px;font-weight:700;margin:2em 0 .8em;padding-left:16px;border-left:4px solid var(--primary);line-height:1.4}
.article-content h3{font-size:21px;font-weight:700;margin:1.8em 0 .7em;color:var(--text)}
.article-content h4{font-size:18px;font-weight:700;margin:1.5em 0 .6em;color:var(--text)}
.article-content ul{list-style:none;margin-bottom:1.8em}
.article-content ul li{
  position:relative;padding:8px 0 8px 28px;color:rgba(234,231,224,.9);
}
.article-content ul li::before{
  content:"";position:absolute;left:4px;top:18px;width:7px;height:7px;
  background:var(--primary);border-radius:50%;
}
.article-content ol{list-style:decimal;margin-bottom:1.8em;padding-left:1.4em}
.article-content ol li{padding:6px 0}
.article-content blockquote{
  border-left:3px solid var(--primary);background:var(--primary-soft);
  padding:18px 24px;border-radius:0 12px 12px 0;margin:2em 0;color:rgba(234,231,224,.88);
}
.article-content blockquote p{margin:0}
.article-content img{border-radius:14px;margin:2em 0;box-shadow:var(--shadow-sm)}
.article-content a{color:var(--primary);border-bottom:1px solid rgba(212,162,78,.4);transition:var(--transition)}
.article-content a:hover{color:#e8bd72;border-bottom-color:var(--primary)}

.article-tags{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:38px;padding-top:26px;border-top:1px solid var(--border)}
.article-tags .tag-label{font-size:14px;color:var(--text-mute)}
.tag{
  display:inline-flex;align-items:center;background:rgba(255,255,255,.05);
  border:1px solid var(--border);color:var(--text-weak);font-size:13px;
  padding:4px 13px;border-radius:999px;transition:var(--transition);
}
.tag:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}

.sidebar-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;margin-bottom:28px;transition:var(--transition);
}
.sidebar-card:hover{border-color:rgba(212,162,78,.32);box-shadow:var(--shadow-sm)}
.sidebar-card h3{
  font-size:17px;font-weight:700;margin-bottom:18px;display:flex;align-items:center;gap:8px;
}
.sidebar-card h3::before{content:"";width:4px;height:18px;background:var(--primary);border-radius:2px}
.side-card-link{
  display:block;margin-bottom:14px;border:1px solid var(--border);border-radius:var(--radius-sm);
  overflow:hidden;transition:var(--transition);background:var(--bg-soft);
}
.side-card-link:hover{transform:translateY(-3px);border-color:rgba(212,162,78,.4);box-shadow:var(--shadow-sm)}
.side-card-link img{width:100%;height:120px;object-fit:cover}
.side-card-link .side-card-body{padding:15px 18px}
.side-card-link .side-card-body strong{display:block;font-size:15px;color:var(--text);margin-bottom:4px}
.side-card-link .side-card-body span{font-size:13px;color:var(--text-mute)}
.sidebar-list li{
  padding:11px 0;border-bottom:1px solid rgba(255,255,255,.05);font-size:15px;
  color:var(--text-weak);display:flex;align-items:center;gap:10px;transition:var(--transition);
}
.sidebar-list li:last-child{border-bottom:none}
.sidebar-list li:hover{color:var(--primary);transform:translateX(4px)}
.sidebar-list li::before{content:"";width:5px;height:5px;background:var(--primary);border-radius:50%;flex-shrink:0}

.not-found{
  text-align:center;padding:70px 30px;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);box-shadow:var(--shadow-sm);
}
.not-found h2{font-size:30px;margin-bottom:14px;color:var(--text)}
.not-found p{color:var(--text-weak);margin-bottom:30px}
.not-found .btn{margin-top:6px}

.faq-section{padding:78px 0 60px;background:var(--bg-soft);border-top:1px solid var(--border)}
.section-head{text-align:center;max-width:720px;margin:0 auto 48px}
.section-head .section-eyebrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);
  background:var(--primary-soft);border:1px solid rgba(212,162,78,.3);border-radius:999px;padding:5px 18px;margin-bottom:16px;
}
.section-head h2{font-size:34px;font-weight:800;color:var(--text);line-height:1.3;letter-spacing:.5px}
.section-head p{font-size:16px;color:var(--text-weak);margin-top:14px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.faq-item{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:26px 30px;transition:var(--transition);cursor:pointer;
}
.faq-item:hover{border-color:rgba(212,162,78,.35);transform:translateY(-3px);box-shadow:var(--shadow-sm)}
.faq-item h3{font-size:17px;font-weight:700;color:var(--text);margin-bottom:10px;display:flex;align-items:flex-start;gap:10px}
.faq-item h3::before{content:"Q";flex-shrink:0;width:28px;height:28px;border-radius:8px;background:var(--primary-soft);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:800}
.faq-item p{font-size:15px;color:var(--text-weak);margin-left:38px}

.cta-section{
  position:relative;padding:88px 0;overflow:hidden;
  background:linear-gradient(135deg,rgba(212,162,78,.14),rgba(12,15,20,.7)),
    url('/assets/images/backpic/back-3.png') center/cover no-repeat;
}
.cta-inner{
  background:rgba(14,17,23,.78);border:1px solid rgba(212,162,78,.22);border-radius:24px;
  padding:56px 50px;backdrop-filter:blur(12px);position:relative;overflow:hidden;
}
.cta-inner::before{
  content:"";position:absolute;top:-80px;right:-80px;width:260px;height:260px;border-radius:50%;
  background:radial-gradient(circle,rgba(212,162,78,.2),transparent 70%);
}
.cta-inner h2{font-size:32px;font-weight:800;color:#fff;margin-bottom:16px;line-height:1.3;letter-spacing:.5px}
.cta-inner p{font-size:17px;color:rgba(255,255,255,.72);max-width:560px;margin-bottom:30px}
.cta-actions{display:flex;align-items:center;gap:16px;flex-wrap:wrap;position:relative;z-index:2}

.site-footer{background:#090c11;border-top:1px solid var(--border);padding:68px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:48px;padding-bottom:44px}
.footer-brand .brand-name{font-size:20px;font-weight:700;color:var(--text);margin-bottom:15px;display:flex;align-items:center;gap:10px}
.footer-brand .brand-name::before{content:"凯";width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--primary),#e6b96e);color:#131313;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:800}
.footer-brand p{font-size:15px;color:var(--text-mute);line-height:1.9;max-width:320px}
.footer-links h4,.footer-contact h4{font-size:16px;font-weight:700;color:var(--text);margin-bottom:18px}
.footer-links a{display:block;font-size:15px;color:var(--text-mute);padding:6px 0;transition:var(--transition)}
.footer-links a:hover{color:var(--primary);transform:translateX(3px)}
.footer-contact p{font-size:15px;color:var(--text-mute);padding:5px 0}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.06);padding:22px 0;display:flex;align-items:center;
  justify-content:space-between;font-size:14px;color:var(--text-mute);
}
.footer-bottom span{display:inline-flex;align-items:center;gap:6px}

@media (max-width:1024px){
  .post-layout{grid-template-columns:1fr;gap:36px}
  .sidebar{display:grid;grid-template-columns:1fr 1fr;gap:20px}
  .sidebar-card{margin-bottom:0}
  .search-box{width:180px}
  .header-inner{gap:18px}
  .main-nav{gap:20px}
}
@media (max-width:820px){
  .container{padding:0 20px}
  .header-inner{flex-wrap:wrap}
  .main-nav{
    display:none;position:absolute;top:var(--header-h);left:0;right:0;background:#0d1117;
    flex-direction:column;align-items:flex-start;gap:0;padding:10px 24px 16px;
    border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);
  }
  .main-nav.open{display:flex}
  .main-nav .nav-link{width:100%;padding:13px 4px;border-bottom:1px solid rgba(255,255,255,.05);font-size:16px}
  .main-nav .nav-link.active{border-bottom:1px solid var(--primary)}
  .nav-toggle{display:block}
  .search-box{display:none}
  .header-actions .btn-primary{margin-right:4px}
  .post-hero{padding:70px 0 60px}
  .post-hero h1{font-size:33px}
  .post-main .article-box{padding:32px 26px}
  .post-main .article-box img{aspect-ratio:auto}
  .faq-grid{grid-template-columns:1fr}
  .cta-inner{padding:40px 26px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:560px){
  .post-hero h1{font-size:27px}
  .post-hero{padding:56px 0 48px}
  .container{padding:0 16px}
  .post-layout{padding:50px 0 40px}
  .sidebar{grid-template-columns:1fr}
  .faq-item{padding:22px}
  .faq-item p{margin-left:0;margin-top:6px}
  .cta-section{padding:60px 0}
  .cta-inner h2{font-size:26px}
  .cta-actions{gap:12px}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px;align-items:flex-start}
  .article-content h2{font-size:22px}
  .article-content h3{font-size:19px}
  .article-tags{gap:8px}
}

/* roulang page: category1 */
:root {
  --primary: #0d1b2a;
  --primary-light: #16283d;
  --secondary: #d4a853;
  --secondary-light: #f0d491;
  --secondary-dark: #b8913a;
  --bg-light: #f6f7fb;
  --bg-white: #ffffff;
  --text-main: #1a2233;
  --text-muted: #637083;
  --border-color: #e5e9f0;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 10px rgba(13, 27, 42, .06);
  --shadow-md: 0 8px 30px rgba(13, 27, 42, .08);
  --shadow-lg: 0 16px 50px rgba(13, 27, 42, .12);
  --transition: all .3s ease;
}

* {
  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;
  background: var(--bg-light);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

input {
  font-family: inherit;
  outline: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 按钮系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  border: 1px solid transparent;
  transition: var(--transition);
  letter-spacing: .02em;
}
.btn-primary {
  background: linear-gradient(135deg, #d4a853, #c9963e);
  color: #0d1b2a;
  box-shadow: 0 4px 18px rgba(212, 168, 83, .35);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 168, 83, .45);
}
.btn-primary:focus-visible {
  outline: 3px solid rgba(212, 168, 83, .5);
  outline-offset: 2px;
}
.btn-ghost {
  background: transparent;
  border-color: rgba(255, 255, 255, .5);
  color: #fff;
}
.btn-ghost:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, .08);
}
.btn-ghost:focus-visible {
  outline: 2px solid rgba(255, 255, 255, .6);
  outline-offset: 2px;
}
.btn-dark {
  background: #0d1b2a;
  color: #fff;
}
.btn-dark:hover {
  background: #16283d;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(13, 27, 42, .2);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

/* 导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 27, 42, .92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.brand-mark {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #d4a853, #f0d491);
  color: #0d1b2a;
  font-size: 18px;
  font-weight: 800;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(212, 168, 83, .3);
}
.brand-name {
  font-size: 19px;
  font-weight: 700;
  color: #fff;
  letter-spacing: .03em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0 auto;
}
.main-nav .nav-link {
  display: inline-block;
  padding: 10px 16px;
  border-radius: 8px;
  color: rgba(255, 255, 255, .78);
  font-size: 15px;
  font-weight: 500;
  transition: var(--transition);
}
.main-nav .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, .08);
}
.main-nav .nav-link:active {
  transform: scale(.97);
}
.main-nav .nav-link.active {
  color: #d4a853;
  background: rgba(212, 168, 83, .12);
  font-weight: 600;
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 40px;
  padding: 8px 16px;
  width: 210px;
  transition: var(--transition);
}
.search-box:focus-within {
  border-color: rgba(212, 168, 83, .6);
  background: rgba(255, 255, 255, .14);
  box-shadow: 0 0 0 3px rgba(212, 168, 83, .12);
}
.search-box svg {
  width: 16px;
  height: 16px;
  color: rgba(255, 255, 255, .5);
  flex-shrink: 0;
}
.search-box input {
  background: transparent;
  border: none;
  color: #fff;
  font-size: 14px;
  width: 100%;
}
.search-box input::placeholder {
  color: rgba(255, 255, 255, .5);
}
.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 8px;
  color: #fff;
  font-size: 18px;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover {
  background: rgba(255, 255, 255, .1);
}
.nav-toggle:focus-visible {
  outline: 2px solid #d4a853;
  outline-offset: 2px;
}

/* 分类页 Hero */
.page-hero {
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  background: #0d1b2a center/cover no-repeat;
  padding: 120px 0 100px;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(100deg, rgba(13, 27, 42, .96) 0%, rgba(13, 27, 42, .84) 45%, rgba(13, 27, 42, .4) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px;
}
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 40px;
  background: rgba(212, 168, 83, .12);
  border: 1px solid rgba(212, 168, 83, .35);
  color: #d4a853;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  margin-bottom: 24px;
}
.page-hero h1 {
  font-size: clamp(42px, 5vw, 64px);
  font-weight: 800;
  line-height: 1.15;
  color: #fff;
  margin: 0 0 18px;
  letter-spacing: .02em;
}
.page-hero .hero-desc {
  font-size: 18px;
  color: rgba(255, 255, 255, .78);
  max-width: 620px;
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* 通用板块 */
.section {
  padding: 90px 0;
}
.section-head {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 40px;
  background: rgba(212, 168, 83, .12);
  color: #b8913a;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.25;
  color: #0d1b2a;
  margin-bottom: 16px;
}
.section-head p {
  color: #637083;
  font-size: 16px;
}

/* 分类简介 */
.section-intro {
  background: var(--bg-white);
}
.intro-grid {
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 60px;
  align-items: center;
}
.intro-text h2 {
  font-size: 30px;
  font-weight: 800;
  color: #0d1b2a;
  line-height: 1.3;
  margin-bottom: 18px;
}
.intro-text p {
  font-size: 15px;
  color: #637083;
  line-height: 1.85;
  margin-bottom: 14px;
}
.intro-text .intro-highlight {
  color: #b8913a;
  font-weight: 600;
}
.intro-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.stat-card {
  background: #f8fafc;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px 20px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(212, 168, 83, .3);
}
.stat-card .num {
  font-size: 32px;
  font-weight: 800;
  color: #d4a853;
  line-height: 1.2;
}
.stat-card .label {
  font-size: 13px;
  color: #637083;
  margin-top: 6px;
}

/* 指南卡片 */
.section-guides {
  background: var(--bg-light);
}
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.guide-card {
  background: var(--bg-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.guide-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(212, 168, 83, .4);
}
.card-img {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.guide-card:hover .card-img img {
  transform: scale(1.05);
}
.card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13, 27, 42, .35), transparent 50%);
}
.card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 4px 12px;
  background: rgba(13, 27, 42, .65);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  border-radius: 20px;
}
.card-body {
  padding: 22px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-body h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: #0d1b2a;
}
.card-body p {
  font-size: 14px;
  color: #637083;
  line-height: 1.7;
  flex: 1;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 18px;
  color: #b8913a;
  font-size: 14px;
  font-weight: 600;
  transition: var(--transition);
}
.card-link:hover {
  color: #0d1b2a;
  gap: 10px;
}

/* 流程步骤（深色） */
.section-steps {
  position: relative;
  padding: 100px 0;
  background: #0d1b2a url('/assets/images/backpic/back-2.png') center/cover no-repeat;
}
.section-steps::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(13, 27, 42, .88);
}
.section-steps .container {
  position: relative;
  z-index: 2;
}
.section-steps .section-head h2 {
  color: #fff;
}
.section-steps .section-head p {
  color: rgba(255, 255, 255, .7);
}
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-card {
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}
.step-card:hover {
  background: rgba(255, 255, 255, .1);
  border-color: rgba(212, 168, 83, .4);
  transform: translateY(-4px);
}
.step-num {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, #d4a853, #f0d491);
  color: #0d1b2a;
  border-radius: 50%;
  font-size: 18px;
  font-weight: 800;
}
.step-card h3 {
  color: #fff;
  font-size: 17px;
  margin-bottom: 10px;
}
.step-card p {
  color: rgba(255, 255, 255, .65);
  font-size: 14px;
  line-height: 1.7;
}

/* 登录场景速览 */
.section-list {
  background: var(--bg-white);
}
.list-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.list-img {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.list-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.list-items {
  display: flex;
  flex-direction: column;
}
.list-item {
  display: flex;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}
.list-item:hover {
  padding-left: 8px;
}
.list-item:last-child {
  border-bottom: none;
}
.item-index {
  color: #d4a853;
  font-size: 15px;
  font-weight: 800;
  flex-shrink: 0;
  line-height: 1.6;
}
.item-content h4 {
  font-size: 16px;
  font-weight: 700;
  color: #0d1b2a;
  margin-bottom: 4px;
}
.item-content p {
  font-size: 14px;
  color: #637083;
  line-height: 1.7;
}

/* FAQ */
.section-faq {
  background: var(--bg-light);
}
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-white);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: rgba(212, 168, 83, .35);
  box-shadow: var(--shadow-sm);
}
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  gap: 16px;
  color: #0d1b2a;
}
.faq-q::after {
  content: "+";
  font-size: 24px;
  color: #d4a853;
  font-weight: 400;
  flex-shrink: 0;
  transition: transform .3s ease;
}
.faq-item.open .faq-q::after {
  transform: rotate(45deg);
}
.faq-a {
  padding: 0 24px 20px;
  color: #637083;
  font-size: 15px;
  line-height: 1.8;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}
.faq-item.open .faq-a {
  max-height: 300px;
  padding-top: 0;
  padding-bottom: 20px;
}

/* CTA */
.section-cta {
  position: relative;
  padding: 90px 0;
  background: linear-gradient(135deg, #0d1b2a 0%, #16283d 100%);
  text-align: center;
  overflow: hidden;
}
.section-cta::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(212, 168, 83, .2), transparent 70%);
}
.section-cta .container {
  position: relative;
  z-index: 2;
}
.section-cta h2 {
  color: #fff;
  font-size: 34px;
  font-weight: 800;
  margin-bottom: 16px;
}
.section-cta p {
  color: rgba(255, 255, 255, .75);
  font-size: 16px;
  margin-bottom: 32px;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}
.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* 页脚 */
.site-footer {
  background: #0a131f;
  color: #a8b3c5;
  padding: 64px 0 30px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .brand-name {
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  max-width: 320px;
  color: #8b96a8;
}
.footer-links h4,
.footer-contact h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 20px;
}
.footer-links a,
.footer-links p,
.footer-contact p {
  display: block;
  color: #8b96a8;
  font-size: 14px;
  line-height: 2.4;
  transition: var(--transition);
}
.footer-links a:hover {
  color: #d4a853;
  padding-left: 4px;
}
.footer-links a:focus-visible {
  outline: 2px solid #d4a853;
  outline-offset: 2px;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  font-size: 13px;
  color: #5c6879;
  flex-wrap: wrap;
  gap: 8px;
}

/* 响应式断点 */
@media (max-width: 1024px) {
  .main-nav {
    gap: 0;
  }
  .main-nav .nav-link {
    padding: 8px 12px;
    font-size: 14px;
  }
  .search-box {
    width: 150px;
  }
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .list-row {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(13, 27, 42, .98);
    flex-direction: column;
    padding: 16px 24px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
    transform: translateY(-130%);
    transition: transform .35s ease;
    z-index: 99;
    box-shadow: 0 20px 40px rgba(0, 0, 0, .2);
  }
  .main-nav.open {
    transform: translateY(0);
  }
  .main-nav .nav-link {
    display: block;
    padding: 14px 16px;
    border-radius: 10px;
    width: 100%;
    text-align: center;
    font-size: 15px;
  }
  .nav-toggle {
    display: flex;
  }
  .header-actions .search-box {
    display: none;
  }
  .header-actions .btn-sm {
    display: none;
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .steps-grid {
    grid-template-columns: 1fr;
  }
  .list-row {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .page-hero {
    min-height: 460px;
    padding: 90px 0 70px;
  }
  .section {
    padding: 60px 0;
  }
  .section-head h2 {
    font-size: 28px;
  }
  .section-cta h2 {
    font-size: 26px;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .brand-name {
    font-size: 16px;
  }
  .brand-mark {
    width: 32px;
    height: 32px;
    font-size: 15px;
  }
  .header-inner {
    height: 64px;
  }
  .main-nav {
    top: 64px;
  }
  .page-hero {
    min-height: 420px;
    padding: 70px 0 56px;
  }
  .page-hero h1 {
    font-size: 34px;
  }
  .page-hero .hero-desc {
    font-size: 15px;
  }
  .hero-actions .btn {
    padding: 10px 18px;
    font-size: 14px;
  }
  .intro-stats {
    grid-template-columns: 1fr;
  }
  .intro-text h2 {
    font-size: 24px;
  }
  .section-head h2 {
    font-size: 24px;
  }
  .card-body {
    padding: 18px;
  }
  .faq-q {
    font-size: 15px;
    padding: 16px 18px;
  }
  .faq-a {
    padding: 0 18px 16px;
  }
  .footer-grid {
    gap: 24px;
  }
}

/* roulang page: category2 */
:root {
  --primary: #0b1f3a;
  --primary-light: #1b3a5c;
  --primary-dark: #060f1e;
  --accent: #d4a86a;
  --accent-dark: #b8894a;
  --accent-soft: rgba(212, 168, 106, 0.15);
  --bg: #f7f6f3;
  --bg-alt: #ffffff;
  --dark: #0b1f3a;
  --text: #1c2333;
  --text-muted: #6b7280;
  --border: #e8e6e1;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-lg: 24px;
  --shadow: 0 8px 30px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 20px 48px rgba(0, 0, 0, 0.13);
  --transition: 0.35s ease;
  --container: 1200px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, select, textarea { font-family: inherit; }
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.4;
  white-space: nowrap;
}
.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-lg { padding: 15px 36px; font-size: 15px; }
.btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
  box-shadow: 0 4px 20px rgba(212, 168, 106, 0.3);
}
.btn-primary:hover {
  background: var(--accent-dark);
  color: #fff;
  box-shadow: 0 6px 26px rgba(212, 168, 106, 0.4);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.7);
  color: #fff;
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-outline-light {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
  backdrop-filter: blur(6px);
}
.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn:focus-visible { outline: 3px solid rgba(212, 168, 106, 0.4); outline-offset: 2px; }
/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 6px 30px rgba(0, 0, 0, 0.06); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.5px;
  box-shadow: 0 4px 14px rgba(11, 31, 58, 0.25);
}
.brand-name {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.5px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-link {
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  transition: all var(--transition);
}
.nav-link:hover { background: rgba(11, 31, 58, 0.06); color: var(--primary); }
.nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(11, 31, 58, 0.25); }
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.search-box {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  width: 200px;
  transition: all var(--transition);
}
.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
  background: #fff;
  width: 240px;
}
.search-box svg { width: 15px; height: 15px; color: var(--text-muted); flex-shrink: 0; }
.search-box input {
  border: none;
  outline: none;
  background: transparent;
  font-size: 13px;
  width: 100%;
  color: var(--text);
}
.search-box input::placeholder { color: #9ca3af; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  font-size: 20px;
  color: var(--primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition);
}
.nav-toggle:hover { background: var(--bg); }
/* Hero */
.page-hero {
  position: relative;
  background-size: cover;
  background-position: center;
  min-height: 460px;
  display: flex;
  align-items: center;
  padding: 100px 0;
}
.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11, 31, 58, 0.95) 0%, rgba(11, 31, 58, 0.78) 45%, rgba(11, 31, 58, 0.45) 100%);
}
.hero-content { position: relative; z-index: 2; max-width: 720px; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 24px;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.8); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent); }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-soft);
  border: 1px solid rgba(212, 168, 106, 0.4);
  color: var(--accent);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}
.hero-content h1 {
  font-size: 46px;
  line-height: 1.2;
  font-weight: 800;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 18px;
}
.hero-content p {
  font-size: 17px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.88);
  margin-bottom: 32px;
  max-width: 580px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
/* 通用板块 */
.section { padding: 90px 0; }
.section + .section:not(.stats-section):not(.cta-section) { border-top: 1px solid var(--border); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-tag {
  display: inline-block;
  background: var(--accent-soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: 999px;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.3;
  margin-bottom: 14px;
  letter-spacing: 0.5px;
}
.section-head p { font-size: 15px; color: var(--text-muted); line-height: 1.8; }
/* 核心能力 */
.features-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.feature-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-dark));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.5s ease;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.feature-card:hover::after { transform: scaleX(1); }
.feature-icon {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(11, 31, 58, 0.08), rgba(212, 168, 106, 0.15));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--primary);
  margin-bottom: 22px;
  transition: all var(--transition);
}
.feature-card:hover .feature-icon {
  background: var(--primary);
  color: var(--accent);
  transform: scale(1.05);
}
.feature-card h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }
/* 登录流程 */
.flow-section { background: linear-gradient(180deg, var(--bg) 0%, #efede8 100%); }
.flow-steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; position: relative; }
.flow-steps::before {
  content: '';
  position: absolute;
  top: 46px;
  left: 16%;
  right: 16%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), rgba(212, 168, 106, 0.15), var(--accent));
  border-radius: 2px;
}
.flow-step {
  position: relative;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 38px 30px 32px;
  text-align: center;
  transition: all var(--transition);
  z-index: 1;
}
.flow-step:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(212, 168, 106, 0.4); }
.step-num {
  width: 52px;
  height: 52px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  box-shadow: 0 6px 20px rgba(11, 31, 58, 0.3);
  position: relative;
  z-index: 2;
}
.flow-step:nth-child(2) .step-num { background: var(--accent); color: var(--primary-dark); box-shadow: 0 6px 20px rgba(212, 168, 106, 0.4); }
.flow-step h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.flow-step p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }
/* 内容卡片 */
.content-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.content-card {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}
.content-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.card-cover { position: relative; height: 220px; overflow: hidden; }
.card-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s ease; }
.content-card:hover .card-cover img { transform: scale(1.08); }
.card-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 31, 58, 0) 40%, rgba(11, 31, 58, 0.5) 100%);
}
.card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 999px;
  letter-spacing: 0.5px;
}
.card-body { padding: 26px 28px 30px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { font-size: 19px; font-weight: 700; color: var(--text); line-height: 1.4; margin-bottom: 12px; transition: color var(--transition); }
.content-card:hover .card-body h3 { color: var(--primary); }
.card-body p { font-size: 14px; color: var(--text-muted); line-height: 1.8; flex: 1; }
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-dark);
  transition: all var(--transition);
}
.card-link i { transition: transform var(--transition); }
.card-link:hover { color: var(--primary); }
.card-link:hover i { transform: translateX(4px); }
/* 统计数据 */
.stats-section {
  background: var(--primary);
  background-image: radial-gradient(ellipse at top, rgba(212, 168, 106, 0.12), transparent 55%);
  border-top: none !important;
  padding: 90px 0;
}
.stats-head { text-align: center; margin-bottom: 52px; }
.stats-head .section-tag { background: rgba(212, 168, 106, 0.15); color: var(--accent); }
.stats-head h2 { color: #fff; font-size: 34px; font-weight: 800; }
.stats-head p { color: rgba(255, 255, 255, 0.7); font-size: 15px; margin-top: 12px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat-card {
  text-align: center;
  padding: 38px 24px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.stat-card:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-4px); }
.stat-num { font-size: 42px; font-weight: 800; color: var(--accent); line-height: 1.2; }
.stat-num span { font-size: 22px; }
.stat-label { margin-top: 10px; color: rgba(255, 255, 255, 0.75); font-size: 14px; }
/* FAQ */
.faq-list { max-width: 780px; margin: 0 auto; }
.faq-item {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 14px;
  overflow: hidden;
  transition: all var(--transition);
}
.faq-item[open] { border-color: rgba(212, 168, 106, 0.4); box-shadow: var(--shadow); }
.faq-item summary {
  padding: 22px 26px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--text);
  transition: color var(--transition);
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 26px;
  font-weight: 300;
  color: var(--accent);
  transition: transform 0.35s ease;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item summary:hover { color: var(--primary); }
.faq-answer { padding: 0 26px 24px; color: var(--text-muted); line-height: 1.8; font-size: 14px; }
/* CTA */
.cta-section {
  position: relative;
  background-size: cover;
  background-position: center;
  padding: 110px 0;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, rgba(11, 31, 58, 0.92), rgba(11, 31, 58, 0.75) 60%, rgba(212, 168, 106, 0.25));
}
.cta-content { position: relative; z-index: 2; max-width: 680px; margin: 0 auto; }
.cta-content h2 {
  font-size: 38px;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 16px;
}
.cta-content p { font-size: 16px; color: rgba(255, 255, 255, 0.85); margin-bottom: 32px; line-height: 1.8; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
/* 页脚 */
.site-footer { background: var(--primary-dark); color: rgba(255, 255, 255, 0.7); padding: 70px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.5fr; gap: 48px; margin-bottom: 50px; }
.footer-brand .brand-name { color: #fff; font-size: 22px; font-weight: 800; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; line-height: 1.8; max-width: 320px; }
.footer-links h4, .footer-contact h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: 0.5px;
}
.footer-links a {
  display: block;
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  padding: 5px 0;
  transition: all var(--transition);
}
.footer-links a:hover { color: var(--accent); padding-left: 6px; }
.footer-contact p { font-size: 14px; margin-bottom: 8px; color: rgba(255, 255, 255, 0.65); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}
/* 响应式 */
@media (max-width: 1024px) {
  .search-box { display: none; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 768px) {
  .header-inner { height: 64px; }
  .main-nav {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    transition: transform 0.35s ease;
    z-index: 99;
  }
  .main-nav.open { transform: translateY(0); }
  .main-nav .nav-link { width: 100%; padding: 12px 16px; }
  .nav-toggle { display: inline-flex; }
  .header-actions .btn-sm { padding: 8px 14px; font-size: 12px; }
  .page-hero { min-height: 400px; padding: 70px 0; }
  .hero-content h1 { font-size: 32px; }
  .hero-content p { font-size: 15px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 26px; }
  .content-grid { grid-template-columns: 1fr; }
  .flow-steps { grid-template-columns: 1fr; gap: 20px; }
  .flow-steps::before { display: none; }
  .faq-item summary { font-size: 15px; padding: 18px 20px; }
  .faq-answer { padding: 0 20px 20px; }
  .cta-content h2 { font-size: 28px; }
  .cta-section { padding: 80px 0; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .brand-name { font-size: 17px; }
  .brand-mark { width: 34px; height: 34px; font-size: 15px; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-num { font-size: 34px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; }
  .cta-actions { flex-direction: column; width: 100%; }
  .cta-actions .btn { width: 100%; }
}