/* roulang page: index */
/* ===== 设计变量 ===== */
:root{
  --primary:#12202f;
  --primary-2:#1b3142;
  --primary-3:#243e56;
  --accent:#d4a548;
  --accent-2:#e8c06a;
  --dark:#0d1622;
  --text:#1a1d23;
  --muted:#6b7280;
  --bg:#ffffff;
  --bg-soft:#f5f7fa;
  --border:#e8eaee;
  --radius:14px;
  --radius-lg:24px;
  --shadow:0 8px 28px rgba(13,22,34,.08);
  --shadow-lg:0 20px 50px rgba(13,22,34,.14);
  --spacer:88px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}
/* ===== Reset & Base ===== */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .25s ease}
ul,ol{list-style:none}
button,input,textarea{font-family:inherit;outline:none}
h1,h2,h3,h4,h5{line-height:1.3;font-weight:700;color:var(--text)}
.container{width:min(1200px,92%);margin:0 auto}
.section{padding:var(--spacer) 0}
.section-head{text-align:center;max-width:720px;margin:0 auto 52px}
.section-eyebrow{display:inline-block;font-size:13px;letter-spacing:2px;color:var(--accent);font-weight:700;text-transform:uppercase;margin-bottom:10px}
.section-head h2{font-size:clamp(26px,3.6vw,38px);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px}
/* ===== 按钮 ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 30px;border-radius:60px;font-weight:600;font-size:15px;border:none;cursor:pointer;transition:all .3s ease;white-space:nowrap}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-2);box-shadow:0 10px 26px rgba(212,165,72,.35);transform:translateY(-2px)}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.7)}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.btn-dark{background:var(--primary);color:#fff}
.btn-dark:hover{background:var(--primary-2);transform:translateY(-2px);box-shadow:var(--shadow)}
/* ===== Header / Nav ===== */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);box-shadow:0 4px 20px rgba(0,0,0,.04)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--primary);white-space:nowrap}
.brand i{color:var(--accent);font-size:24px}
.main-nav{display:flex;align-items:center;gap:6px}
.main-nav .nav-link{padding:8px 18px;border-radius:30px;font-size:15px;font-weight:500;color:var(--text)}
.main-nav .nav-link:hover{background:var(--bg-soft);color:var(--primary)}
.main-nav .nav-link.active{background:var(--primary);color:#fff}
.nav-right{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--primary);cursor:pointer}
/* ===== Hero ===== */
.hero{position:relative;background:linear-gradient(120deg,rgba(13,22,34,.92),rgba(18,32,47,.78)),url(/assets/images/backpic/back-1.png) center/cover no-repeat;color:#fff;padding:120px 0 100px;overflow:hidden}
.hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:180px;background:linear-gradient(180deg,transparent,var(--dark))}
.hero .container{position:relative;z-index:2}
.hero .hero-tag{display:inline-flex;align-items:center;gap:8px;padding:8px 20px;background:rgba(212,165,72,.16);border:1px solid rgba(212,165,72,.45);color:var(--accent-2);border-radius:40px;font-size:14px;font-weight:600;margin-bottom:22px}
.hero h1{font-size:clamp(34px,5.4vw,56px);font-weight:800;line-height:1.18;margin-bottom:20px;max-width:760px}
.hero h1 span{color:var(--accent)}
.hero p.sub{font-size:17px;line-height:1.8;color:rgba(255,255,255,.83);max-width:640px;margin-bottom:36px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-badges{display:flex;flex-wrap:wrap;gap:14px;margin-top:42px}
.hero-badges span{display:flex;align-items:center;gap:6px;color:rgba(255,255,255,.72);font-size:13px}
.hero-badges i{color:var(--accent)}
/* ===== 核心说明 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px 30px;transition:all .35s ease;position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;left:0;top:0;height:4px;width:0;background:var(--accent);transition:width .4s ease}
.feature-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-card:hover::before{width:100%}
.feature-icon{width:60px;height:60px;background:rgba(212,165,72,.12);color:var(--accent);border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:20px}
.feature-card h3{font-size:19px;margin-bottom:12px}
.feature-card p{color:var(--muted);font-size:15px;line-height:1.7}
/* ===== 分类入口 ===== */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cat-card{position:relative;border-radius:var(--radius-lg);overflow:hidden;height:320px;display:flex;align-items:flex-end;box-shadow:var(--shadow);transition:all .4s ease}
.cat-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.cat-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.cat-card:hover img{transform:scale(1.05)}
.cat-card .overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 20%,rgba(13,22,34,.88))}
.cat-card .info{position:relative;z-index:2;padding:28px;width:100%}
.cat-card .badge{display:inline-block;background:var(--accent);color:#fff;font-size:12px;font-weight:600;padding:4px 14px;border-radius:20px;margin-bottom:10px}
.cat-card h3{color:#fff;font-size:22px;margin-bottom:6px}
.cat-card p{color:rgba(255,255,255,.75);font-size:14px}
/* ===== 最新信息 ===== */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.news-item{display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px 26px;transition:all .3s ease;position:relative}
.news-item:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-4px)}
.news-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.news-cat{font-size:12px;font-weight:600;color:var(--accent);background:rgba(212,165,72,.12);padding:4px 12px;border-radius:20px}
.news-date{font-size:12px;color:var(--muted)}
.news-item h3{font-size:18px;margin-bottom:10px;color:var(--text)}
.news-item p{font-size:14px;color:var(--muted);line-height:1.7;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.empty-tip{text-align:center;color:var(--muted);background:var(--bg-soft);border-radius:var(--radius);padding:50px 20px;grid-column:1/-1}
/* ===== 数据统计 ===== */
.stats-section{background:linear-gradient(120deg,var(--dark),var(--primary-2));color:#fff}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-item{padding:30px 20px;border-radius:var(--radius);background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08)}
.stat-num{font-size:44px;font-weight:800;color:var(--accent);margin-bottom:6px}
.stat-label{color:rgba(255,255,255,.76);font-size:14px}
/* ===== 操作流程 ===== */
.steps{max-width:760px;margin:0 auto;position:relative}
.steps::before{content:'';position:absolute;left:29px;top:8px;bottom:8px;width:2px;background:var(--border)}
.step{display:flex;gap:30px;position:relative;margin-bottom:32px}
.step:last-child{margin-bottom:0}
.step-num{width:60px;height:60px;flex-shrink:0;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;box-shadow:0 8px 20px rgba(18,32,47,.2);z-index:2}
.step-body{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px 28px;flex:1}
.step-body h3{font-size:18px;margin-bottom:6px}
.step-body p{color:var(--muted);font-size:14px}
/* ===== FAQ ===== */
.faq-list{max-width:780px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);margin-bottom:14px;overflow:hidden;transition:all .3s ease}
.faq-item:hover{border-color:var(--accent)}
.faq-item summary{list-style:none;cursor:pointer;padding:20px 28px;font-weight:600;display:flex;justify-content:space-between;align-items:center;gap:14px}
.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:12px;color:var(--accent);transition:transform .25s ease}
.faq-item[open] summary::after{transform:rotate(180deg)}
.faq-item .faq-answer{padding:0 28px 22px;color:var(--muted);font-size:15px;line-height:1.75;border-top:1px dashed var(--border);padding-top:16px}
/* ===== CTA ===== */
.cta-section{position:relative;background:linear-gradient(120deg,var(--primary),var(--primary-3)),url(/assets/images/backpic/back-2.png) center/cover no-repeat;background-blend-mode:overlay;padding:100px 0;text-align:center;color:#fff}
.cta-section h2{color:#fff;font-size:clamp(26px,4vw,38px);margin-bottom:16px}
.cta-section p{color:rgba(255,255,255,.82);max-width:520px;margin:0 auto 32px}
/* ===== Footer ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.7);padding:70px 0 30px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:50px;margin-bottom:48px}
.footer-brand{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.footer-brand i{color:var(--accent)}
.footer-desc{font-size:14px;line-height:1.8;max-width:340px}
.footer-title{color:#fff;font-size:16px;font-weight:600;margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-title::after{content:'';position:absolute;bottom:0;left:0;width:30px;height:2px;background:var(--accent)}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,.65)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:var(--accent)}
/* ===== 响应式 ===== */
@media(max-width:1024px){
  .feature-grid,.cat-grid{grid-template-columns:repeat(2,1fr)}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:1fr}
}
@media(max-width:768px){
  :root{--spacer:64px}
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:16px 4%;flex-direction:column;align-items:flex-start;box-shadow:0 20px 40px rgba(0,0,0,.08)}
  .main-nav.open{display:flex}
  .main-nav .nav-link{width:100%;padding:12px 16px}
  .nav-right .btn{display:none}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .hero{padding:90px 0 80px}
}
@media(max-width:520px){
  .feature-grid,.cat-grid,.stats-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%}
  .brand{font-size:16px;gap:6px}
}

/* roulang page: category1 */
:root {
  --primary: #132b44;
  --primary-light: #1d3a5f;
  --primary-deep: #0c1d2e;
  --accent: #e4a83d;
  --accent-light: #f0c36d;
  --bg: #f4f6f9;
  --bg-white: #ffffff;
  --bg-dark: #0c1d2e;
  --text: #1c2733;
  --text-weak: #6b7a8c;
  --text-light: #dce4ec;
  --border: #e2e8f0;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(12, 29, 46, 0.08);
  --shadow-lg: 0 16px 48px rgba(12, 29, 46, 0.16);
  --shadow-accent: 0 6px 28px rgba(228, 168, 61, 0.35);
  --transition: 0.3s ease;
  --font-main: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-main); background: var(--bg); color: var(--text); line-height: 1.7; font-size: 16px; }
body.nav-open { overflow: hidden; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, select, textarea { font-family: inherit; }
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.section { padding: 88px 0; }
.section-alt { background: var(--bg); }
.section-dark { background: var(--bg-dark); position: relative; overflow: hidden; }

/* Header */
.site-header { background: rgba(255, 255, 255, 0.96); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--primary); letter-spacing: 0.5px; white-space: nowrap; }
.brand i { color: var(--accent); font-size: 22px; }
.main-nav { display: flex; align-items: center; gap: 6px; }
.main-nav .nav-link { padding: 10px 18px; border-radius: 30px; font-size: 15px; font-weight: 600; color: var(--text); position: relative; transition: background var(--transition), color var(--transition); }
.main-nav .nav-link:hover { background: rgba(19, 43, 68, 0.06); color: var(--primary); }
.main-nav .nav-link.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(19, 43, 68, 0.28); }
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-search { display: flex; align-items: center; background: var(--bg); border: 1px solid var(--border); border-radius: 30px; padding: 6px 8px 6px 16px; min-width: 200px; transition: border-color var(--transition), box-shadow var(--transition); }
.nav-search input { border: none; outline: none; background: transparent; font-size: 14px; color: var(--text); width: 100%; }
.nav-search:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(228, 168, 61, 0.15); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 22px; border-radius: 30px; font-size: 15px; font-weight: 600; transition: transform var(--transition), box-shadow var(--transition), background var(--transition); }
.btn:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.btn-dark { background: var(--primary); color: #fff; box-shadow: 0 4px 16px rgba(19, 43, 68, 0.25); }
.btn-dark:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(19, 43, 68, 0.32); }
.btn-dark:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(19, 43, 68, 0.2); }
.btn-accent { background: var(--accent); color: var(--primary-deep); box-shadow: var(--shadow-accent); }
.btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); }
.btn-outline-light { border: 1px solid rgba(255, 255, 255, 0.25); color: #fff; background: rgba(255, 255, 255, 0.08); backdrop-filter: blur(4px); }
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.16); transform: translateY(-2px); }
.nav-toggle { display: none; width: 40px; height: 40px; border-radius: 10px; background: var(--bg); color: var(--primary); font-size: 18px; align-items: center; justify-content: center; }
.nav-toggle:hover { background: rgba(19, 43, 68, 0.1); }

/* Banner Hero */
.page-banner { position: relative; background: linear-gradient(135deg, rgba(12, 29, 46, 0.93), rgba(29, 58, 95, 0.85)), url('/assets/images/backpic/back-1.png') center/cover; color: #fff; padding: 92px 0 88px; overflow: hidden; }
.page-banner::after { content: ''; position: absolute; inset: 0; background: radial-gradient(ellipse at 80% 20%, rgba(228, 168, 61, 0.12), transparent); pointer-events: none; }
.page-banner .container { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-bottom: 24px; }
.breadcrumb a { color: rgba(255, 255, 255, 0.7); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: 11px; color: rgba(255, 255, 255, 0.4); }
.page-banner h1 { font-size: 48px; font-weight: 800; line-height: 1.25; margin-bottom: 20px; letter-spacing: 1px; }
.page-banner h1 .highlight { color: var(--accent); }
.page-banner .lead { font-size: 17px; line-height: 1.8; color: rgba(255, 255, 255, 0.85); max-width: 640px; margin-bottom: 36px; }
.banner-badges { display: flex; flex-wrap: wrap; gap: 12px; }
.badge { display: inline-flex; align-items: center; gap: 6px; padding: 7px 16px; border-radius: 30px; font-size: 13px; font-weight: 600; background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.2); color: rgba(255, 255, 255, 0.95); backdrop-filter: blur(6px); }
.badge i { color: var(--accent); }

/* Intro Split */
.intro-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
.intro-media { position: relative; }
.intro-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); width: 100%; object-fit: cover; aspect-ratio: 4/3; }
.intro-media .float-card { position: absolute; bottom: -22px; left: -22px; background: var(--bg-white); border-radius: var(--radius); padding: 16px 20px; box-shadow: var(--shadow-lg); display: flex; align-items: center; gap: 12px; border: 1px solid var(--border); }
.intro-media .float-card i { font-size: 26px; color: var(--accent); }
.intro-media .float-card strong { display: block; font-size: 18px; color: var(--primary); }
.intro-media .float-card span { font-size: 13px; color: var(--text-weak); }
.intro-content h2 { font-size: 32px; font-weight: 800; color: var(--primary); line-height: 1.4; margin-bottom: 16px; }
.intro-content h2 .underline-accent { position: relative; }
.intro-content h2 .underline-accent::after { content: ''; position: absolute; left: 0; right: 0; bottom: 2px; height: 10px; background: rgba(228, 168, 61, 0.28); z-index: -1; }
.intro-content p { color: var(--text-weak); margin-bottom: 16px; font-size: 15px; }
.intro-list { margin: 24px 0 8px; display: grid; gap: 14px; }
.intro-list li { display: flex; align-items: flex-start; gap: 12px; padding: 14px 16px; background: var(--bg); border-radius: var(--radius-sm); border-left: 3px solid var(--accent); }
.intro-list li i { color: var(--accent); font-size: 16px; margin-top: 3px; }
.intro-list li strong { display: block; font-size: 14px; color: var(--primary); margin-bottom: 2px; }
.intro-list li span { font-size: 13px; color: var(--text-weak); line-height: 1.6; }

/* Entry Cards */
.entry-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; margin-top: 48px; }
.entry-card { background: var(--bg-white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); transition: transform var(--transition), box-shadow var(--transition); }
.entry-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: rgba(228, 168, 61, 0.4); }
.entry-card .entry-media { position: relative; height: 200px; overflow: hidden; }
.entry-card .entry-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.entry-card:hover .entry-media img { transform: scale(1.06); }
.entry-card .entry-overlay { position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(12, 29, 46, 0.7)); opacity: 0; transition: opacity var(--transition); }
.entry-card:hover .entry-overlay { opacity: 1; }
.entry-card .entry-overlay i { position: absolute; right: 18px; top: 18px; width: 40px; height: 40px; border-radius: 50%; background: rgba(255, 255, 255, 0.2); backdrop-filter: blur(4px); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 16px; }
.entry-card .entry-body { padding: 26px 26px 28px; }
.entry-card .entry-tag { display: inline-block; padding: 4px 14px; border-radius: 30px; font-size: 12px; font-weight: 700; background: rgba(228, 168, 61, 0.14); color: #a67c1e; letter-spacing: 0.5px; margin-bottom: 12px; }
.entry-card h3 { font-size: 20px; font-weight: 700; color: var(--primary); margin-bottom: 10px; }
.entry-card p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }
.entry-card .entry-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 14px; font-weight: 600; color: var(--primary); }
.entry-card .entry-link i { transition: transform var(--transition); }
.entry-card:hover .entry-link i { transform: translateX(4px); }

/* Stats Dark */
.stats-section { background: linear-gradient(135deg, rgba(12, 29, 46, 0.97), rgba(19, 43, 68, 0.94)), url('/assets/images/backpic/back-2.png') center/cover; color: #fff; padding: 88px 0; position: relative; }
.stats-section::before { content: ''; position: absolute; top: 0; left: 50%; width: 600px; height: 300px; transform: translateX(-50%); background: radial-gradient(ellipse, rgba(228, 168, 61, 0.08), transparent); pointer-events: none; }
.stats-top { text-align: center; margin-bottom: 48px; position: relative; z-index: 2; }
.stats-top .eyebrow { display: inline-block; padding: 6px 18px; border-radius: 30px; font-size: 12px; font-weight: 700; letter-spacing: 2px; color: var(--accent-light); background: rgba(228, 168, 61, 0.12); border: 1px solid rgba(228, 168, 61, 0.25); text-transform: uppercase; margin-bottom: 16px; }
.stats-top h2 { font-size: 34px; font-weight: 800; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 2; }
.stat-block { text-align: center; padding: 34px 20px; background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--radius-lg); backdrop-filter: blur(6px); transition: background var(--transition), transform var(--transition); }
.stat-block:hover { background: rgba(255, 255, 255, 0.1); transform: translateY(-4px); }
.stat-block i { font-size: 30px; color: var(--accent); margin-bottom: 14px; }
.stat-block .stat-num { font-size: 44px; font-weight: 800; line-height: 1.2; letter-spacing: 1px; }
.stat-block .stat-label { font-size: 14px; color: rgba(255, 255, 255, 0.7); margin-top: 6px; }

/* Process Timeline */
.process-wrap { max-width: 800px; margin: 56px auto 0; position: relative; padding-left: 24px; }
.process-wrap::before { content: ''; position: absolute; left: 27px; top: 8px; bottom: 8px; width: 2px; background: linear-gradient(180deg, var(--accent), rgba(228, 168, 61, 0.08)); }
.process-item { position: relative; padding: 0 0 44px 68px; }
.process-item:last-child { padding-bottom: 0; }
.process-item .dot { position: absolute; left: 8px; top: 6px; width: 40px; height: 40px; border-radius: 50%; background: var(--bg-white); border: 2px solid var(--accent); display: flex; align-items: center; justify-content: center; font-size: 15px; color: var(--primary); box-shadow: 0 0 0 6px rgba(228, 168, 61, 0.14); }
.process-item .process-card { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px 26px; box-shadow: var(--shadow); transition: box-shadow var(--transition), transform var(--transition); }
.process-item .process-card:hover { box-shadow: var(--shadow-lg); transform: translateX(4px); }
.process-item .step-tag { display: inline-block; font-size: 12px; font-weight: 700; color: #a67c1e; background: rgba(228, 168, 61, 0.12); padding: 3px 12px; border-radius: 30px; margin-bottom: 8px; letter-spacing: 0.5px; }
.process-item h3 { font-size: 18px; font-weight: 700; color: var(--primary); margin-bottom: 6px; }
.process-item p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }

/* FAQ */
.faq-wrap { max-width: 820px; margin: 0 auto; }
.faq-item { background: var(--bg-white); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 16px; overflow: hidden; transition: box-shadow var(--transition); }
.faq-item:hover { box-shadow: var(--shadow); }
.faq-item summary { padding: 20px 26px; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; font-size: 16px; font-weight: 600; color: var(--primary); list-style: none; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary .faq-icon { width: 26px; height: 26px; border-radius: 50%; background: rgba(228, 168, 61, 0.14); color: #a67c1e; display: flex; align-items: center; justify-content: center; font-size: 12px; flex-shrink: 0; transition: transform var(--transition), background var(--transition); }
.faq-item[open] summary .faq-icon { transform: rotate(45deg); background: var(--accent); color: var(--primary-deep); }
.faq-item .faq-body { padding: 0 26px 22px; color: var(--text-weak); font-size: 14px; line-height: 1.8; }

/* CTA */
.cta-section { background: linear-gradient(135deg, var(--primary-deep), var(--primary-light)); color: #fff; padding: 80px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(228, 168, 61, 0.2), transparent); top: -120px; right: -100px; }
.cta-wrap { position: relative; z-index: 2; display: flex; align-items: center; justify-content: space-between; gap: 40px; flex-wrap: wrap; }
.cta-text h2 { font-size: 32px; font-weight: 800; margin-bottom: 10px; }
.cta-text p { font-size: 16px; color: rgba(255, 255, 255, 0.8); max-width: 460px; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* Footer */
.site-footer { background: var(--primary-deep); color: rgba(255, 255, 255, 0.75); padding: 70px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 18px; }
.footer-brand i { color: var(--accent); }
.footer-desc { font-size: 14px; line-height: 1.8; max-width: 420px; color: rgba(255, 255, 255, 0.6); }
.footer-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 20px; position: relative; padding-bottom: 12px; }
.footer-title::after { content: ''; position: absolute; left: 0; bottom: 0; width: 30px; height: 2px; background: var(--accent); }
.footer-links li { margin-bottom: 12px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.65); transition: color var(--transition), padding-left var(--transition); }
.footer-links a:hover { color: var(--accent-light); padding-left: 5px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.12); padding-top: 28px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; font-size: 13px; color: rgba(255, 255, 255, 0.45); }
.footer-bottom a { color: rgba(255, 255, 255, 0.6); }
.footer-bottom a:hover { color: var(--accent-light); }

/* Section Header */
.section-header { text-align: center; max-width: 680px; margin: 0 auto 52px; }
.section-header .eyebrow { display: inline-block; padding: 5px 16px; border-radius: 30px; font-size: 12px; font-weight: 700; letter-spacing: 2px; color: #a67c1e; background: rgba(228, 168, 61, 0.14); margin-bottom: 14px; text-transform: uppercase; }
.section-header h2 { font-size: 34px; font-weight: 800; color: var(--primary); line-height: 1.35; margin-bottom: 12px; }
.section-header p { font-size: 15px; color: var(--text-weak); }

/* Animations */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
.animate-up { animation: fadeInUp 0.7s ease both; }
.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }

/* Responsive */
@media (max-width: 1024px) {
  .nav-wrap { flex-wrap: wrap; padding: 14px 0; height: auto; gap: 12px; }
  .main-nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: 4px; gap: 4px; }
  .main-nav .nav-link { white-space: nowrap; padding: 8px 14px; }
  .intro-wrap { grid-template-columns: 1fr; gap: 40px; }
  .entry-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .page-banner { padding: 70px 0 60px; }
  .page-banner h1 { font-size: 34px; }
  .nav-wrap { height: auto; flex-wrap: wrap; padding: 12px 0; }
  .nav-toggle { display: flex; }
  .nav-search { display: none; }
  .main-nav { display: none; width: 100%; }
  .main-nav.open { display: flex; flex-direction: column; align-items: stretch; padding: 8px 0; }
  .main-nav.open .nav-link { text-align: center; padding: 14px; }
  .entry-grid { grid-template-columns: 1fr; gap: 20px; }
  .process-item { padding-left: 56px; }
  .process-wrap::before { left: 23px; }
  .process-item .dot { left: 4px; width: 36px; height: 36px; font-size: 13px; }
  .cta-wrap { flex-direction: column; text-align: center; justify-content: center; }
  .cta-actions { justify-content: center; }
}
@media (max-width: 520px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .page-banner h1 { font-size: 28px; }
  .section-header h2 { font-size: 26px; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .intro-media .float-card { left: 8px; bottom: -18px; padding: 12px 16px; }
  .btn { padding: 10px 18px; font-size: 14px; }
  .faq-item summary { font-size: 15px; padding: 16px 18px; }
  .faq-item .faq-body { padding: 0 18px 18px; }
}

/* roulang page: article */
:root {
  --primary: #1e2a4a;
  --primary-light: #2d3f6e;
  --primary-dark: #131c33;
  --accent: #c9a24b;
  --accent-dark: #a8833a;
  --accent-light: #e8d5a4;
  --bg: #f5f6fa;
  --bg-white: #ffffff;
  --bg-dark: #0f1626;
  --text: #1a2233;
  --text-weak: #6b7280;
  --border: #e5e7ed;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(15, 22, 38, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 22, 38, 0.1);
  --shadow-lg: 0 20px 60px rgba(15, 22, 38, 0.14);
  --transition: 0.25s ease;
  --container: 1200px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--transition), box-shadow var(--transition), transform var(--transition); }
button { font-family: inherit; border: none; background: none; cursor: pointer; }
ul, ol { list-style: none; }
input, textarea { font-family: inherit; }
.container { 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: 15px; font-weight: 600;
  transition: all var(--transition); white-space: nowrap; line-height: 1.4;
}
.btn-dark { background: var(--primary); color: #fff; }
.btn-dark:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30,42,74,0.3); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201,162,75,0.35); }
.btn-outline { border: 1px solid var(--border); color: var(--text); background: var(--bg-white); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent-dark); background: #fdfaf3; }
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.93);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 20px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 22px; font-weight: 800; color: var(--primary); flex-shrink: 0; letter-spacing: 0.5px;
}
.brand i { color: var(--accent); font-size: 26px; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.nav-link {
  display: inline-flex; align-items: center; padding: 9px 18px;
  border-radius: 999px; font-weight: 500; color: var(--text-weak); font-size: 15px;
  transition: all var(--transition);
}
.nav-link:hover { color: var(--primary); background: #f0f2f7; }
.nav-link.active { color: var(--primary); background: rgba(30,42,74,0.08); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-toggle { display: none; font-size: 20px; color: var(--primary); padding: 8px; border-radius: 8px; transition: background var(--transition); }
.nav-toggle:hover { background: #f0f2f7; }
.page-banner {
  position: relative; padding: 110px 0 90px; background-size: cover; background-position: center;
  color: #fff; overflow: hidden; isolation: isolate;
}
.banner-overlay {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(135deg, rgba(15,22,38,0.92) 0%, rgba(30,42,74,0.78) 45%, rgba(15,22,38,0.55) 100%);
}
.banner-pattern {
  position: absolute; right: -80px; top: -80px; width: 320px; height: 320px;
  border-radius: 50%; border: 2px solid rgba(201,162,75,0.3); z-index: 0; pointer-events: none;
}
.banner-pattern::after {
  content: ''; position: absolute; inset: 46px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.12);
}
.banner-pattern::before {
  content: ''; position: absolute; inset: 100px; border-radius: 50%;
  border: 1px solid rgba(201,162,75,0.18);
}
.banner-content { position: relative; z-index: 2; max-width: 920px; }
.breadcrumb {
  display: flex; align-items: center; flex-wrap: wrap; gap: 8px;
  font-size: 14px; color: rgba(255,255,255,0.7); margin-bottom: 24px;
}
.breadcrumb a { color: rgba(255,255,255,0.7); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--accent-light); }
.breadcrumb i { font-size: 12px; opacity: 0.8; }
.breadcrumb .current { color: var(--accent-light); }
.page-banner h1 {
  font-size: 42px; line-height: 1.3; font-weight: 800; margin-bottom: 22px;
  letter-spacing: 0.5px; text-shadow: 0 2px 24px rgba(0,0,0,0.2);
}
.banner-meta { display: flex; flex-wrap: wrap; gap: 22px; font-size: 14px; color: rgba(255,255,255,0.85); }
.banner-meta span { display: inline-flex; align-items: center; gap: 8px; }
.banner-meta i { color: var(--accent); }
.article-main { padding: 60px 0; }
.article-layout { display: grid; grid-template-columns: 1fr 340px; gap: 40px; align-items: start; }
.article-content {
  background: var(--bg-white); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
  padding: 48px; border: 1px solid var(--border);
}
.article-body { font-size: 16px; line-height: 1.9; color: #334155; word-break: break-word; }
.article-body h2, .article-body h3, .article-body h4 { color: var(--primary); font-weight: 700; margin-top: 36px; margin-bottom: 14px; }
.article-body h2 { font-size: 28px; }
.article-body h3 { font-size: 22px; }
.article-body h4 { font-size: 18px; }
.article-body p { margin-bottom: 20px; }
.article-body img { border-radius: var(--radius-md); margin: 28px auto; box-shadow: var(--shadow-sm); }
.article-body a { color: var(--accent-dark); border-bottom: 1px solid rgba(168,131,58,0.3); transition: all var(--transition); }
.article-body a:hover { color: var(--primary); border-bottom-color: var(--primary); }
.article-body ul, .article-body ol { margin: 0 0 22px 24px; }
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote {
  border-left: 4px solid var(--accent); padding: 18px 22px;
  background: #fdfaf3; border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 28px 0; color: #6b7280; font-style: normal;
}
.article-body code {
  background: #f0f2f7; border-radius: 4px; padding: 2px 8px;
  font-size: 14px; color: var(--primary);
}
.article-body table { width: 100%; border-collapse: collapse; margin: 28px 0; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; }
.article-body th { background: rgba(30,42,74,0.04); color: var(--primary); font-weight: 600; }
.article-footer { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 16px; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(30,42,74,0.06); color: var(--primary);
  font-size: 13px; padding: 5px 14px; border-radius: 999px; font-weight: 500;
}
.tag i { font-size: 12px; color: var(--accent); }
.not-found {
  text-align: center; padding: 80px 20px;
}
.not-found i { font-size: 52px; color: var(--accent); margin-bottom: 20px; display: block; }
.not-found h2 { font-size: 28px; color: var(--primary); margin-bottom: 12px; }
.not-found p { color: var(--text-weak); margin-bottom: 28px; font-size: 15px; }
.article-sidebar { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 24px; }
.sidebar-card {
  background: var(--bg-white); border-radius: var(--radius-md); box-shadow: var(--shadow-sm);
  padding: 28px; border: 1px solid var(--border);
}
.sidebar-title {
  font-size: 16px; font-weight: 700; color: var(--primary); margin-bottom: 16px;
  display: flex; align-items: center; gap: 8px;
}
.sidebar-title i { color: var(--accent); }
.sidebar-list li { padding: 8px 0; border-bottom: 1px solid #f0f0f4; font-size: 14px; }
.sidebar-list li:last-child { border-bottom: none; }
.sidebar-list a { color: var(--text-weak); transition: all var(--transition); display: inline-flex; align-items: center; gap: 8px; }
.sidebar-list a:hover { color: var(--primary); transform: translateX(2px); }
.sidebar-list a i { font-size: 12px; color: var(--accent); }
.sidebar-desc { font-size: 14px; color: var(--text-weak); margin-bottom: 16px; line-height: 1.7; }
.sidebar-cta .btn { width: 100%; }
.related-section { padding: 60px 0; background: var(--bg); border-top: 1px solid var(--border); }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 32px; gap: 20px; }
.section-title { font-size: 28px; font-weight: 800; color: var(--primary); }
.section-sub { color: var(--text-weak); font-size: 14px; margin-top: 4px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card {
  background: var(--bg-white); border-radius: var(--radius-md); overflow: hidden;
  border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all var(--transition);
  display: block;
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); }
.related-card img { width: 100%; height: 190px; object-fit: cover; }
.related-body { padding: 22px; }
.related-body h3 { font-size: 16px; font-weight: 600; color: var(--text); line-height: 1.5; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-body p { font-size: 13px; color: var(--text-weak); margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.related-meta { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--accent-dark); font-weight: 500; }
.related-meta i { font-size: 11px; }
.category-guide { padding: 60px 0; background: var(--bg-white); }
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.category-card {
  padding: 36px 32px; border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--bg), #fff);
  border: 1px solid var(--border); transition: all var(--transition); position: relative; overflow: hidden;
}
.category-card::after {
  content: ''; position: absolute; right: -30px; bottom: -30px; width: 100px; height: 100px;
  border-radius: 50%; border: 2px solid rgba(201,162,75,0.15); transition: transform var(--transition);
}
.category-card:hover { border-color: var(--accent); transform: translateY(-4px); box-shadow: var(--shadow-md); }
.category-card:hover::after { transform: scale(1.3); }
.category-card i { font-size: 34px; color: var(--accent); margin-bottom: 18px; display: block; }
.category-card h3 { font-size: 20px; color: var(--primary); margin-bottom: 10px; }
.category-card p { color: var(--text-weak); font-size: 14px; margin-bottom: 18px; line-height: 1.7; }
.category-link { color: var(--accent-dark); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 8px; position: relative; z-index: 2; }
.category-link i { font-size: 13px; margin: 0; display: inline; }
.faq-section { padding: 60px 0; background: var(--bg); }
.faq-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 32px; }
.faq-item {
  background: var(--bg-white); border-radius: var(--radius-md); padding: 26px;
  border: 1px solid var(--border); transition: all var(--transition);
}
.faq-item:hover { box-shadow: var(--shadow-sm); border-color: rgba(201,162,75,0.4); }
.faq-item h3 { font-size: 16px; color: var(--primary); margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.faq-item h3 i { color: var(--accent); font-size: 14px; }
.faq-item p { font-size: 14px; color: var(--text-weak); line-height: 1.7; }
.cta-section { padding: 60px 0; background: var(--bg-white); }
.cta-box {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: var(--radius-lg); padding: 52px 56px;
  display: flex; justify-content: space-between; align-items: center; gap: 32px;
  color: #fff; position: relative; overflow: hidden;
}
.cta-box::after {
  content: ''; position: absolute; right: -50px; top: -50px; width: 220px; height: 220px;
  border-radius: 50%; background: rgba(255,255,255,0.06);
}
.cta-box::before {
  content: ''; position: absolute; right: 80px; bottom: -100px; width: 180px; height: 180px;
  border-radius: 50%; border: 2px solid rgba(201,162,75,0.25);
}
.cta-content { position: relative; z-index: 2; flex: 1; }
.cta-content h2 { font-size: 26px; font-weight: 700; margin-bottom: 12px; }
.cta-content p { color: rgba(255,255,255,0.85); font-size: 15px; }
.cta-box .btn { position: relative; z-index: 2; flex-shrink: 0; }
.cta-box .btn-accent { background: var(--accent); }
.cta-box .btn-accent:hover { background: var(--accent-light); color: var(--primary); }
.site-footer { background: var(--bg-dark); color: rgba(255,255,255,0.75); padding: 60px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-brand { font-size: 20px; font-weight: 700; color: #fff; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
.footer-brand i { color: var(--accent); font-size: 22px; }
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.55); }
.footer-title { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255,255,255,0.55); font-size: 14px; transition: color var(--transition), padding-left var(--transition); }
.footer-links a:hover { color: var(--accent-light); padding-left: 4px; }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; font-size: 13px; color: rgba(255,255,255,0.4); flex-wrap: wrap; gap: 12px; }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent-light); }
:focus-visible { outline: 3px solid rgba(201,162,75,0.5); outline-offset: 2px; }
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; flex-direction: row; flex-wrap: wrap; }
  .sidebar-card { flex: 1; min-width: 260px; }
  .related-grid, .category-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cta-box { flex-direction: column; text-align: center; }
  .cta-box .btn { margin-top: 8px; }
}
@media (max-width: 768px) {
  .nav-wrap { height: auto; padding: 12px 0; flex-wrap: wrap; gap: 12px; }
  .main-nav { display: none; flex-basis: 100%; flex-direction: column; align-items: stretch; gap: 4px; padding: 12px 0 4px; }
  .main-nav.open { display: flex; }
  .nav-link { border-radius: 10px; padding: 12px 16px; }
  .nav-toggle { display: block; }
  .page-banner { padding: 60px 0 44px; }
  .page-banner h1 { font-size: 30px; }
  .article-content { padding: 28px; }
  .article-main { padding: 40px 0; }
  .related-grid, .category-grid, .faq-grid { grid-template-columns: 1fr; }
  .cta-box { padding: 36px 28px; }
  .cta-content h2 { font-size: 22px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; justify-content: center; text-align: center; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 8px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand { font-size: 18px; }
  .brand i { font-size: 22px; }
  .btn { padding: 10px 18px; font-size: 14px; }
  .page-banner h1 { font-size: 24px; }
  .article-content { padding: 20px; }
  .related-body { padding: 16px; }
  .category-card { padding: 26px 20px; }
  .faq-item { padding: 20px; }
  .cta-box { padding: 28px 20px; }
}

/* roulang page: category2 */
/* ===== 设计变量 ===== */
:root {
  --primary: #1e3a5f;
  --primary-deep: #102a43;
  --primary-light: #2c5282;
  --accent: #c9a05a;
  --accent-light: #e8cf9d;
  --dark: #0f1e2e;
  --bg: #f5f7fa;
  --bg-soft: #eef1f5;
  --white: #ffffff;
  --text: #25344a;
  --text-muted: #5d7085;
  --border: #dde4ec;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(15, 30, 46, 0.06);
  --shadow: 0 12px 32px rgba(15, 30, 46, 0.10);
  --shadow-lg: 0 24px 60px rgba(15, 30, 46, 0.14);
  --transition: all 0.3s ease;
  --spacing: 88px;
  --container: 1200px;
}

/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", 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 { color: inherit; text-decoration: none; transition: var(--transition); }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
input:focus, button:focus, a:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
section { padding: var(--spacing) 0; }
.section-header { text-align: center; max-width: 680px; margin: 0 auto 48px; }
.section-tag { display: inline-block; background: rgba(201, 160, 90, 0.12); color: var(--accent); border: 1px solid rgba(201, 160, 90, 0.28); font-size: 13px; font-weight: 600; letter-spacing: 1px; padding: 6px 16px; border-radius: 40px; margin-bottom: 16px; }
.section-title { font-size: clamp(28px, 4vw, 38px); font-weight: 800; color: var(--dark); line-height: 1.25; margin-bottom: 14px; }
.section-desc { color: var(--text-muted); font-size: 16px; line-height: 1.8; }

/* ===== Header / Nav ===== */
.site-header { background: var(--white); border-bottom: 1px solid var(--border); box-shadow: 0 2px 12px rgba(15, 30, 46, 0.04); position: sticky; top: 0; z-index: 100; }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--primary); white-space: nowrap; }
.brand i { color: var(--accent); font-size: 24px; }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav .nav-link { position: relative; display: inline-block; padding: 8px 16px; border-radius: 40px; font-size: 15px; font-weight: 500; color: var(--text-muted); }
.main-nav .nav-link:hover { color: var(--primary); background: rgba(30, 58, 95, 0.06); }
.main-nav .nav-link.active { color: var(--primary); background: rgba(30, 58, 95, 0.08); font-weight: 600; }
.main-nav .nav-link.active::after { content: ""; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 18px; height: 2px; background: var(--accent); border-radius: 2px; }
.nav-right { display: flex; align-items: center; gap: 12px; }
.nav-search { display: flex; align-items: center; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 40px; padding: 6px 6px 6px 14px; width: 200px; transition: var(--transition); }
.nav-search:focus-within { border-color: var(--accent); background: var(--white); box-shadow: 0 0 0 4px rgba(201, 160, 90, 0.12); }
.nav-search input { border: none; background: transparent; font-size: 13px; color: var(--text); width: 100%; outline: none; }
.nav-search button { color: var(--text-muted); padding: 0 6px; font-size: 14px; }
.nav-toggle { display: none; font-size: 22px; color: var(--primary); padding: 6px 10px; border-radius: 8px; }

/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: 40px; font-size: 14px; font-weight: 600; transition: var(--transition); white-space: nowrap; }
.btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 4px 16px rgba(30, 58, 95, 0.25); }
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(30, 58, 95, 0.35); }
.btn-accent { background: var(--accent); color: var(--dark); box-shadow: 0 4px 16px rgba(201, 160, 90, 0.3); }
.btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(201, 160, 90, 0.4); }
.btn-dark { background: var(--dark); color: var(--white); box-shadow: 0 4px 16px rgba(15, 30, 46, 0.2); }
.btn-dark:hover { background: var(--primary-deep); transform: translateY(-2px); }
.btn-ghost { background: rgba(255, 255, 255, 0.08); color: var(--white); border: 1px solid rgba(255, 255, 255, 0.3); backdrop-filter: blur(4px); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.16); transform: translateY(-2px); }
.btn-lg { padding: 14px 32px; font-size: 16px; }

/* ===== Hero ===== */
.page-hero { position: relative; padding: 110px 0 90px; background: linear-gradient(rgba(15, 30, 46, 0.82), rgba(15, 30, 46, 0.88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat; color: var(--white); }
.page-hero .breadcrumb { display: flex; gap: 8px; font-size: 13px; color: rgba(255, 255, 255, 0.65); margin-bottom: 18px; }
.page-hero .breadcrumb a:hover { color: var(--accent-light); }
.page-hero h1 { font-size: clamp(32px, 5vw, 46px); font-weight: 800; line-height: 1.2; margin-bottom: 18px; max-width: 720px; }
.page-hero h1 span { color: var(--accent); }
.page-hero .hero-desc { font-size: 17px; line-height: 1.8; color: rgba(255, 255, 255, 0.8); max-width: 620px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 36px; margin-top: 46px; padding-top: 30px; border-top: 1px solid rgba(255, 255, 255, 0.15); flex-wrap: wrap; }
.hero-stat .stat-num { font-size: 26px; font-weight: 800; color: var(--accent); }
.hero-stat .stat-label { font-size: 13px; color: rgba(255, 255, 255, 0.7); }

/* ===== 登录准备 ===== */
.prepare-section { background: var(--white); }
.prepare-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.prepare-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 32px 28px; transition: var(--transition); }
.prepare-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: rgba(201, 160, 90, 0.4); }
.prepare-card .card-icon { width: 52px; height: 52px; border-radius: 14px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); color: var(--white); display: flex; align-items: center; justify-content: center; font-size: 20px; margin-bottom: 20px; }
.prepare-card h3 { font-size: 18px; font-weight: 700; color: var(--dark); margin-bottom: 10px; }
.prepare-card p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }

/* ===== 登录步骤 ===== */
.steps-section { background: var(--bg); }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.steps-grid::before { content: ""; position: absolute; top: 40px; left: 8%; right: 8%; height: 2px; background: linear-gradient(90deg, transparent, var(--accent), transparent); opacity: 0.5; }
.step-item { position: relative; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 32px 22px 26px; text-align: center; box-shadow: var(--shadow-sm); transition: var(--transition); }
.step-item:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 78px; height: 78px; border-radius: 50%; background: var(--dark); color: var(--accent); font-size: 24px; font-weight: 800; margin-bottom: 18px; border: 4px solid var(--bg); box-shadow: 0 0 0 2px var(--accent); position: relative; z-index: 1; }
.step-item h3 { font-size: 17px; color: var(--dark); margin-bottom: 8px; }
.step-item p { font-size: 13px; color: var(--text-muted); line-height: 1.65; }

/* ===== 登录方式 ===== */
.methods-section { background: var(--white); }
.methods-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.method-card { border-radius: var(--radius-lg); overflow: hidden; background: var(--white); border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: var(--transition); }
.method-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.method-card .cover { height: 200px; overflow: hidden; position: relative; }
.method-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.method-card:hover .cover img { transform: scale(1.06); }
.method-card .cover::after { content: ""; position: absolute; inset: 0; background: linear-gradient(to top, rgba(15, 30, 46, 0.4), transparent 60%); }
.method-card .badge { position: absolute; top: 16px; left: 16px; z-index: 2; background: rgba(255, 255, 255, 0.92); color: var(--primary); font-size: 12px; font-weight: 700; padding: 6px 14px; border-radius: 40px; box-shadow: var(--shadow-sm); }
.method-card .method-body { padding: 26px 24px 28px; }
.method-card .method-body h3 { font-size: 19px; color: var(--dark); margin-bottom: 8px; }
.method-card .method-body p { font-size: 14px; color: var(--text-muted); line-height: 1.75; margin-bottom: 18px; }
.method-card .method-link { color: var(--primary); font-weight: 600; font-size: 14px; display: inline-flex; align-items: center; gap: 6px; }
.method-card .method-link:hover { color: var(--accent); gap: 10px; }

/* ===== 安全提示 ===== */
.safety-section { background: linear-gradient(135deg, var(--dark) 0%, var(--primary-deep) 100%); color: var(--white); }
.safety-section .section-title { color: var(--white); }
.safety-section .section-desc { color: rgba(255, 255, 255, 0.7); }
.safety-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.safety-card { background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--radius-md); padding: 26px 20px; backdrop-filter: blur(6px); transition: var(--transition); }
.safety-card:hover { background: rgba(255, 255, 255, 0.14); transform: translateY(-4px); }
.safety-card i { font-size: 24px; color: var(--accent); margin-bottom: 14px; display: inline-block; }
.safety-card h4 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.safety-card p { font-size: 13px; color: rgba(255, 255, 255, 0.7); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { background: var(--bg); }
.faq-wrap { max-width: 780px; margin: 0 auto; }
.faq-item { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 14px; overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: rgba(201, 160, 90, 0.4); box-shadow: var(--shadow-sm); }
.faq-question { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 24px; font-size: 16px; font-weight: 600; color: var(--dark); cursor: pointer; }
.faq-question i { color: var(--accent); flex-shrink: 0; transition: transform 0.3s ease; }
.faq-item.open .faq-question i { transform: rotate(45deg); }
.faq-answer { display: none; padding: 0 24px 22px; font-size: 14px; color: var(--text-muted); line-height: 1.8; }
.faq-item.open .faq-answer { display: block; }

/* ===== CTA ===== */
.cta-section { position: relative; padding: 90px 0; background: linear-gradient(rgba(15, 30, 46, 0.85), rgba(15, 30, 46, 0.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat; color: var(--white); text-align: center; }
.cta-section h2 { font-size: clamp(26px, 4vw, 36px); font-weight: 800; margin-bottom: 14px; }
.cta-section p { color: rgba(255, 255, 255, 0.75); max-width: 520px; margin: 0 auto 30px; font-size: 15px; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.75); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255, 255, 255, 0.08); }
.footer-brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: #fff; margin-bottom: 16px; }
.footer-brand i { color: var(--accent); }
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.6); max-width: 360px; }
.footer-title { font-size: 15px; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: rgba(255, 255, 255, 0.6); }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; font-size: 13px; color: rgba(255, 255, 255, 0.45); flex-wrap: wrap; gap: 8px; }
.footer-bottom a { color: rgba(255, 255, 255, 0.6); }
.footer-bottom a:hover { color: var(--accent); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  :root { --spacing: 64px; }
  .prepare-grid, .methods-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .steps-grid::before { display: none; }
  .safety-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-search { width: 140px; }
}

@media (max-width: 768px) {
  .nav-wrap { height: auto; padding: 12px 0; flex-wrap: wrap; }
  .brand { flex: 1; }
  .nav-right { order: 3; width: 100%; justify-content: flex-end; margin-top: 4px; }
  .nav-toggle { display: block; }
  .main-nav { display: none; width: 100%; order: 4; flex-direction: column; align-items: flex-start; gap: 4px; padding: 12px 0 4px; }
  .main-nav.open { display: flex; }
  .main-nav .nav-link { width: 100%; padding: 12px 12px; }
  .nav-search { width: 100%; }
  .page-hero { padding: 78px 0 60px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  :root { --spacing: 48px; }
  .prepare-grid, .methods-grid, .steps-grid, .safety-grid { grid-template-columns: 1fr; }
  .page-hero h1 { font-size: 28px; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .section-title { font-size: 24px; }
  .cta-actions .btn { width: 100%; justify-content: center; }
}

/* roulang page: category3 */
:root {
  --primary: #0e2a47;
  --primary-light: #1b3f63;
  --accent: #c9a962;
  --accent-dark: #a8863e;
  --bg: #f5f6f8;
  --bg-light: #ffffff;
  --bg-dark: #0b1d30;
  --text: #1a1d23;
  --text-muted: #6b7280;
  --border: #e5e7eb;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(14, 42, 71, 0.08);
  --shadow-lg: 0 12px 40px rgba(14, 42, 71, 0.14);
  --font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font-family); color: var(--text); background: var(--bg); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; transition: color 0.2s ease; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
input { font-family: inherit; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.site-header { background: #ffffff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 4px rgba(14,42,71,0.04); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 20px; }
.brand { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 800; color: var(--primary); letter-spacing: 0.5px; white-space: nowrap; }
.brand i { font-size: 24px; color: var(--accent); }
.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav .nav-link { padding: 8px 18px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--text-muted); transition: all 0.25s ease; }
.main-nav .nav-link:hover { color: var(--primary); background: rgba(14,42,71,0.06); }
.main-nav .nav-link.active { color: #fff; background: var(--primary); font-weight: 600; }
.nav-right { display: flex; align-items: center; gap: 14px; }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 24px; border-radius: 999px; font-size: 15px; font-weight: 600; border: none; transition: all 0.25s ease; text-decoration: none; }
.btn i { font-size: 14px; }
.btn-dark { background: var(--primary); color: #fff; }
.btn-dark:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(14,42,71,0.25); }
.btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-accent { background: var(--accent); color: var(--primary); }
.btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 24px rgba(201,169,98,0.4); }
.nav-toggle { display: none; background: none; border: none; font-size: 22px; color: var(--primary); padding: 6px; }
.nav-toggle:hover { color: var(--accent); }
.page-hero { position: relative; background: linear-gradient(135deg, #0a1b2e 0%, #122f50 55%, #1a4064 100%); background-size: cover; background-position: center; background-image: url('/assets/images/backpic/back-1.png'); padding: 80px 0 70px; color: #fff; overflow: hidden; }
.page-hero::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(180deg, rgba(10,27,46,0.55) 0%, rgba(10,27,46,0.75) 100%); z-index: 1; }
.page-hero .container { position: relative; z-index: 2; }
.hero-badge { display: inline-flex; align-items: center; gap: 6px; background: rgba(201,169,98,0.15); border: 1px solid rgba(201,169,98,0.45); color: #e8d5a2; padding: 6px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; letter-spacing: 1px; margin-bottom: 20px; }
.hero-badge i { font-size: 13px; }
.page-hero h1 { font-size: 42px; font-weight: 800; line-height: 1.25; margin-bottom: 16px; letter-spacing: 1px; }
.page-hero p { font-size: 17px; color: rgba(255,255,255,0.85); max-width: 680px; margin-bottom: 30px; line-height: 1.8; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.65); margin-bottom: 20px; }
.breadcrumb a { color: rgba(255,255,255,0.65); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 12px; }
.section { padding: 72px 0; }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 48px; }
.section-tag { display: inline-block; background: rgba(14,42,71,0.06); color: var(--primary); padding: 5px 16px; border-radius: 999px; font-size: 13px; font-weight: 600; letter-spacing: 1px; margin-bottom: 14px; }
.section-head h2 { font-size: 34px; font-weight: 800; color: var(--text); line-height: 1.3; margin-bottom: 14px; }
.section-head p { color: var(--text-muted); font-size: 16px; line-height: 1.7; }
.section-light { background: var(--bg); }
.section-white { background: var(--bg-light); }
.section-dark { background: var(--bg-dark); color: #fff; position: relative; }
.section-dark .section-tag { background: rgba(201,169,98,0.14); color: var(--accent); }
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(255,255,255,0.65); }
.section-intro .intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.intro-media { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-lg); position: relative; }
.intro-media img { width: 100%; height: 360px; object-fit: cover; }
.intro-media::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 40%; background: linear-gradient(180deg, transparent, rgba(10,27,46,0.35)); pointer-events: none; }
.intro-content h2 { font-size: 32px; font-weight: 800; color: var(--text); margin-bottom: 14px; line-height: 1.3; }
.intro-content h2 span { color: var(--accent); }
.intro-content p { font-size: 16px; line-height: 1.8; color: var(--text-muted); margin-bottom: 20px; }
.intro-list { list-style: none; margin-top: 20px; }
.intro-list li { display: flex; align-items: flex-start; gap: 12px; padding: 10px 0; border-bottom: 1px dashed var(--border); font-size: 15px; color: var(--text); }
.intro-list li:last-child { border-bottom: none; }
.intro-list li i { color: var(--accent); font-size: 16px; margin-top: 3px; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.service-card { background: var(--bg-light); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: all 0.3s ease; border: 1px solid var(--border); }
.service-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(201,169,98,0.5); }
.service-card .card-img { position: relative; height: 190px; overflow: hidden; }
.service-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.service-card:hover .card-img img { transform: scale(1.04); }
.service-card .card-img::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 50%; background: linear-gradient(180deg, transparent, rgba(10,27,46,0.3)); }
.service-card .card-body { padding: 26px 24px; }
.service-card .card-icon { width: 50px; height: 50px; background: var(--primary); border-radius: 12px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; margin-bottom: 16px; transition: background 0.3s ease; }
.service-card:hover .card-icon { background: var(--accent); color: var(--primary); }
.service-card h3 { font-size: 19px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.service-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag { display: inline-block; background: #f0f2f5; padding: 4px 12px; border-radius: 999px; font-size: 12px; color: var(--text-muted); }
.tag.highlight { background: rgba(201,169,98,0.12); color: var(--accent-dark); }
.feature-section { background: #fff; }
.feature-section .feat-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.feat-item { display: flex; gap: 18px; padding: 24px; border-radius: var(--radius); background: var(--bg); border: 1px solid var(--border); transition: all 0.3s ease; }
.feat-item:hover { border-color: rgba(201,169,98,0.5); box-shadow: var(--shadow); transform: translateY(-4px); }
.feat-item .feat-icon { flex-shrink: 0; width: 54px; height: 54px; background: linear-gradient(135deg, var(--primary), var(--primary-light)); border-radius: 14px; display: flex; align-items: center; justify-content: center; color: var(--accent); font-size: 22px; }
.feat-item h3 { font-size: 18px; font-weight: 700; color: var(--text); margin-bottom: 8px; }
.feat-item p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }
.stats-section { background: var(--bg-dark); color: #fff; padding: 64px 0; position: relative; overflow: hidden; }
.stats-section::before { content: ''; position: absolute; top: -50%; left: -20%; width: 70%; height: 80%; background: radial-gradient(circle, rgba(201,169,98,0.12) 0%, transparent 70%); }
.stats-section::after { content: ''; position: absolute; bottom: -40%; right: -10%; width: 60%; height: 70%; background: radial-gradient(circle, rgba(201,169,98,0.08) 0%, transparent 70%); }
.stats-section .container { position: relative; z-index: 2; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat-item .stat-num { font-size: 42px; font-weight: 800; color: var(--accent); line-height: 1; margin-bottom: 8px; }
.stat-item .stat-label { font-size: 15px; color: rgba(255,255,255,0.7); letter-spacing: 1px; }
.process-section { background: var(--bg); }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; }
.process-item { background: #fff; border-radius: var(--radius); padding: 30px 24px; text-align: center; border: 1px solid var(--border); transition: all 0.3s ease; position: relative; }
.process-item:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.process-item .step-num { display: inline-flex; align-items: center; justify-content: center; width: 36px; height: 36px; background: var(--accent); color: var(--primary); border-radius: 50%; font-weight: 700; font-size: 15px; margin-bottom: 16px; }
.process-item .step-icon { font-size: 32px; color: var(--primary); margin-bottom: 14px; display: block; }
.process-item h3 { font-size: 17px; font-weight: 700; color: var(--text); margin-bottom: 10px; }
.process-item p { font-size: 14px; color: var(--text-muted); line-height: 1.6; }
.faq-section { background: #fff; }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 14px; overflow: hidden; transition: border-color 0.3s ease, box-shadow 0.3s ease; }
.faq-item:hover { border-color: rgba(201,169,98,0.5); box-shadow: 0 2px 12px rgba(14,42,71,0.05); }
.faq-item details { padding: 20px 24px; }
.faq-item summary { list-style: none; font-size: 16px; font-weight: 600; color: var(--text); cursor: pointer; display: flex; align-items: center; gap: 12px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary i.fa-chevron-down { margin-left: auto; font-size: 14px; color: var(--accent); transition: transform 0.3s ease; }
.faq-item[open] summary i.fa-chevron-down { transform: rotate(180deg); }
.faq-item .faq-answer { padding-top: 14px; font-size: 15px; color: var(--text-muted); line-height: 1.8; }
.cta-section { background: linear-gradient(135deg, #0a1b2e 0%, #122f50 55%, #1a4064 100%); background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; padding: 72px 0; color: #fff; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: linear-gradient(135deg, rgba(10,27,46,0.78) 0%, rgba(20,56,88,0.82) 100%); }
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 { font-size: 36px; font-weight: 800; margin-bottom: 16px; }
.cta-section h2 span { color: var(--accent); }
.cta-section p { font-size: 16px; color: rgba(255,255,255,0.85); max-width: 640px; margin: 0 auto 30px; line-height: 1.8; }
.cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.site-footer { background: #081422; color: rgba(255,255,255,0.7); padding: 64px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 36px; }
.footer-brand { font-size: 20px; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-brand i { color: var(--accent); }
.footer-desc { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.55); max-width: 360px; }
.footer-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: rgba(255,255,255,0.6); font-size: 14px; transition: color 0.2s ease; }
.footer-links a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: rgba(255,255,255,0.4); flex-wrap: wrap; gap: 10px; }
.footer-bottom a { color: rgba(255,255,255,0.5); }
.footer-bottom a:hover { color: var(--accent); }
.scroll-top { position: fixed; bottom: 32px; right: 32px; width: 46px; height: 46px; background: var(--primary); color: #fff; border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 18px; box-shadow: 0 4px 16px rgba(14,42,71,0.3); z-index: 99; opacity: 0; visibility: hidden; transition: all 0.3s ease; border: none; }
.scroll-top.show { opacity: 1; visibility: visible; }
.scroll-top:hover { background: var(--accent); color: var(--primary); transform: translateY(-3px); }

@media (max-width: 1024px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .intro-grid { gap: 32px; }
}
@media (max-width: 768px) {
  .main-nav { display: none; position: absolute; top: 64px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 12px 24px; flex-direction: column; gap: 4px; box-shadow: 0 12px 24px rgba(14,42,71,0.08); }
  .main-nav.open { display: flex; }
  .main-nav .nav-link { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
  .main-nav .nav-link.active { background: rgba(14,42,71,0.08); color: var(--primary); }
  .nav-toggle { display: block; }
  .nav-right .btn { display: none; }
  .page-hero { padding: 60px 0 50px; }
  .page-hero h1 { font-size: 30px; }
  .section { padding: 56px 0; }
  .section-head h2 { font-size: 26px; }
  .intro-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .feat-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .brand { font-size: 17px; }
  .brand i { font-size: 20px; }
  .page-hero h1 { font-size: 24px; }
  .hero-actions { flex-direction: column; width: 100%; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .section-head h2 { font-size: 22px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item .stat-num { font-size: 32px; }
  .cta-section h2 { font-size: 26px; }
  .scroll-top { right: 16px; bottom: 16px; }
}