/* roulang page: index */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#1e293b;
  --primary-light:#334155;
  --primary-dark:#0f172a;
  --secondary:#3b82f6;
  --secondary-hover:#2563eb;
  --accent:#f59e0b;
  --accent-hover:#d97706;
  --bg:#f8fafc;
  --bg-white:#ffffff;
  --bg-card:#ffffff;
  --bg-soft:#f1f5f9;
  --bg-dark:#1e293b;
  --text:#1e293b;
  --text-light:#64748b;
  --text-muted:#94a3b8;
  --text-white:#ffffff;
  --border:#e2e8f0;
  --border-light:#f1f5f9;
  --radius:16px;
  --radius-sm:10px;
  --radius-xs:6px;
  --shadow:0 4px 24px rgba(0,0,0,0.06);
  --shadow-md:0 8px 40px rgba(0,0,0,0.08);
  --shadow-hover:0 16px 48px rgba(0,0,0,0.12);
  --shadow-lg:0 24px 64px rgba(0,0,0,0.14);
  --transition:0.35s cubic-bezier(0.25,0.46,0.45,0.94);
  --font:'PingFang SC','Microsoft YaHei','Helvetica Neue',Arial,sans-serif;
  --container:1240px;
  --header-h:76px
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
a{color:var(--secondary);text-decoration:none;transition:color var(--transition)}
a:hover{color:var(--secondary-hover)}
img{max-width:100%;height:auto;display:block}
ul,ol{list-style:none}
button,.btn{cursor:pointer;font-family:var(--font);border:none;outline:none;transition:all var(--transition)}
input,textarea{font-family:var(--font);outline:none;border:none}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:100px 0}
.section-header{text-align:center;margin-bottom:56px}
.section-header .subtitle{display:inline-block;font-size:14px;font-weight:600;color:var(--secondary);text-transform:uppercase;letter-spacing:2px;margin-bottom:12px;background:rgba(59,130,246,0.08);padding:6px 18px;border-radius:20px}
.section-header h2{font-size:36px;font-weight:800;color:var(--primary);line-height:1.25;margin-bottom:16px}
.section-header p{font-size:17px;color:var(--text-light);max-width:640px;margin:0 auto;line-height:1.7}
@media(max-width:768px){
  .section{padding:64px 0}
  .section-header h2{font-size:28px}
  .section-header p{font-size:15px}
}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;line-height:1.4;transition:all var(--transition);white-space:nowrap}
.btn-primary{background:var(--secondary);color:var(--text-white);box-shadow:0 4px 14px rgba(59,130,246,0.35)}
.btn-primary:hover{background:var(--secondary-hover);box-shadow:0 6px 20px rgba(59,130,246,0.45);transform:translateY(-2px);color:var(--text-white)}
.btn-accent{background:var(--accent);color:var(--text-white);box-shadow:0 4px 14px rgba(245,158,11,0.35)}
.btn-accent:hover{background:var(--accent-hover);box-shadow:0 6px 20px rgba(245,158,11,0.45);transform:translateY(-2px);color:var(--text-white)}
.btn-outline{background:transparent;color:var(--text-white);border:2px solid rgba(255,255,255,0.4)}
.btn-outline:hover{background:rgba(255,255,255,0.12);border-color:var(--text-white);transform:translateY(-2px);color:var(--text-white)}
.btn-lg{padding:16px 36px;font-size:17px;border-radius:var(--radius-sm)}
.badge{display:inline-block;padding:4px 14px;border-radius:20px;font-size:13px;font-weight:600;background:rgba(59,130,246,0.1);color:var(--secondary)}
.badge-hot{background:rgba(239,68,68,0.1);color:#ef4444}
.badge-new{background:rgba(34,197,94,0.1);color:#22c55e}

/* Header */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(30,41,59,0.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,0.06);height:var(--header-h);transition:all var(--transition)}
.header.scrolled{background:rgba(15,23,42,0.96);box-shadow:0 4px 30px rgba(0,0,0,0.3)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:100%}
.logo{font-size:22px;font-weight:800;color:var(--text-white);letter-spacing:-0.5px;display:flex;align-items:center;gap:10px}
.logo i{color:var(--secondary);font-size:26px}
.logo span{background:linear-gradient(135deg,#60a5fa,#3b82f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav{display:flex;align-items:center;gap:6px}
.nav a{position:relative;padding:8px 20px;border-radius:var(--radius-xs);font-size:14px;font-weight:500;color:rgba(255,255,255,0.75);transition:all var(--transition);background:transparent}
.nav a:hover{color:var(--text-white);background:rgba(255,255,255,0.08)}
.nav a.active{color:var(--text-white);background:rgba(59,130,246,0.2)}
.nav a.active::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--secondary);border-radius:4px}
.header-cta .btn{padding:10px 24px;font-size:14px;border-radius:var(--radius-xs)}
.mobile-toggle{display:none;background:none;border:none;color:var(--text-white);font-size:24px;padding:8px;cursor:pointer}
@media(max-width:768px){
  .mobile-toggle{display:block}
  .nav{position:fixed;top:var(--header-h);left:0;right:0;background:rgba(15,23,42,0.98);backdrop-filter:blur(20px);flex-direction:column;padding:20px 24px;gap:4px;transform:translateY(-120%);opacity:0;transition:all 0.4s cubic-bezier(0.25,0.46,0.45,0.94);pointer-events:none;border-bottom:1px solid rgba(255,255,255,0.06)}
  .nav.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .nav a{padding:14px 20px;width:100%;text-align:center;font-size:16px}
  .nav a.active::after{display:none}
  .header-cta{display:none}
}

/* Hero */
.hero{position:relative;min-height:92vh;display:flex;align-items:center;overflow:hidden;background:var(--primary-dark);padding-top:var(--header-h)}
.hero-bg{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat;opacity:0.35;transform:scale(1.05);animation:heroZoom 20s ease-in-out infinite alternate}
@keyframes heroZoom{0%{transform:scale(1.05)}100%{transform:scale(1.15)}}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,23,42,0.88) 0%,rgba(30,41,59,0.72) 50%,rgba(15,23,42,0.88) 100%)}
.hero .container{position:relative;z-index:2;text-align:center;padding:80px 24px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.12);backdrop-filter:blur(10px);padding:8px 20px;border-radius:40px;font-size:13px;font-weight:500;color:rgba(255,255,255,0.85);margin-bottom:32px}
.hero-badge i{color:var(--accent);font-size:14px}
.hero h1{font-size:52px;font-weight:900;line-height:1.15;color:var(--text-white);margin-bottom:20px;letter-spacing:-1px}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,#60a5fa,#3b82f6,#f59e0b);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero p{font-size:20px;color:rgba(255,255,255,0.7);max-width:620px;margin:0 auto 36px;line-height:1.7}
.hero-actions{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;justify-content:center;gap:48px;margin-top:56px;flex-wrap:wrap}
.hero-stat{text-align:center}
.hero-stat .num{font-size:36px;font-weight:800;color:var(--text-white);line-height:1.2}
.hero-stat .num em{font-style:normal;color:var(--secondary)}
.hero-stat .label{font-size:14px;color:rgba(255,255,255,0.55);margin-top:4px}
@media(max-width:768px){
  .hero{min-height:80vh}
  .hero h1{font-size:32px}
  .hero p{font-size:16px}
  .hero-stats{gap:24px}
  .hero-stat .num{font-size:26px}
}
@media(max-width:520px){
  .hero h1{font-size:26px}
  .hero-actions{flex-direction:column;width:100%}
  .hero-actions .btn{width:100%;justify-content:center}
}

/* Features */
.features{background:var(--bg-white)}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:var(--bg-soft);border-radius:var(--radius);padding:36px 28px;text-align:center;transition:all var(--transition);border:1px solid transparent}
.feature-card:hover{border-color:var(--border);background:var(--bg-white);box-shadow:var(--shadow);transform:translateY(-4px)}
.feature-card .icon{width:60px;height:60px;border-radius:16px;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:26px;color:var(--text-white)}
.feature-card .icon.blue{background:linear-gradient(135deg,#3b82f6,#60a5fa)}
.feature-card .icon.green{background:linear-gradient(135deg,#22c55e,#4ade80)}
.feature-card .icon.orange{background:linear-gradient(135deg,#f59e0b,#fbbf24)}
.feature-card .icon.pink{background:linear-gradient(135deg,#ec4899,#f472b6)}
.feature-card h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:8px}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.7}
@media(max-width:1024px){
  .features-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:520px){
  .features-grid{grid-template-columns:1fr}
}

/* Game Categories */
.game-categories{background:var(--bg)}
.categories-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.cat-card{position:relative;border-radius:var(--radius);overflow:hidden;background:var(--bg-card);box-shadow:var(--shadow);transition:all var(--transition);cursor:pointer;border:1px solid var(--border)}
.cat-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-6px)}
.cat-card .cat-img{height:200px;overflow:hidden;position:relative}
.cat-card .cat-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.cat-card:hover .cat-img img{transform:scale(1.08)}
.cat-card .cat-img .overlay{position:absolute;inset:0;background:linear-gradient(0deg,rgba(15,23,42,0.7) 0%,transparent 60%)}
.cat-card .cat-body{padding:20px 24px 24px}
.cat-card .cat-body h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:4px}
.cat-card .cat-body p{font-size:14px;color:var(--text-light);margin-bottom:12px}
.cat-card .cat-body .badge{font-size:12px}
@media(max-width:1024px){
  .categories-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:520px){
  .categories-grid{grid-template-columns:1fr}
  .cat-card .cat-img{height:160px}
}

/* Latest News (CMS) */
.latest-news{background:var(--bg-white)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--bg-card);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition);border:1px solid var(--border);display:flex;flex-direction:column}
.news-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.news-card .news-img{height:200px;overflow:hidden;position:relative}
.news-card .news-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.news-card:hover .news-img img{transform:scale(1.06)}
.news-card .news-img .tag{position:absolute;top:16px;left:16px;z-index:2}
.news-card .news-body{padding:20px 24px 24px;flex:1;display:flex;flex-direction:column}
.news-card .news-body .meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-muted);margin-bottom:10px}
.news-card .news-body .meta i{font-size:12px}
.news-card .news-body h3{font-size:17px;font-weight:700;color:var(--primary);line-height:1.4;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .news-body p{font-size:14px;color:var(--text-light);line-height:1.7;margin-bottom:16px;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card .news-body .read-more{font-size:14px;font-weight:600;color:var(--secondary);display:inline-flex;align-items:center;gap:6px;transition:gap var(--transition)}
.news-card .news-body .read-more:hover{gap:10px}
.news-empty{grid-column:1/-1;text-align:center;padding:60px 20px;background:var(--bg-soft);border-radius:var(--radius);color:var(--text-light)}
.news-empty i{font-size:48px;color:var(--text-muted);margin-bottom:16px;display:block}
.news-empty p{font-size:16px}
@media(max-width:1024px){
  .news-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:520px){
  .news-grid{grid-template-columns:1fr}
  .news-card .news-img{height:180px}
}

/* Stats */
.stats-section{background:var(--primary-dark);position:relative;overflow:hidden}
.stats-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center center/cover no-repeat;opacity:0.08}
.stats-section .container{position:relative;z-index:2}
.stats-section .section-header h2{color:var(--text-white)}
.stats-section .section-header p{color:rgba(255,255,255,0.6)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat-item{text-align:center;padding:32px 16px;background:rgba(255,255,255,0.04);border-radius:var(--radius);border:1px solid rgba(255,255,255,0.06);transition:all var(--transition)}
.stat-item:hover{background:rgba(255,255,255,0.08);transform:translateY(-4px)}
.stat-item .num{font-size:42px;font-weight:900;color:var(--text-white);line-height:1.1}
.stat-item .num em{font-style:normal;color:var(--secondary)}
.stat-item .label{font-size:15px;color:rgba(255,255,255,0.55);margin-top:8px;font-weight:500}
@media(max-width:768px){
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .stat-item .num{font-size:32px}
}
@media(max-width:520px){
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stat-item{padding:24px 12px}
  .stat-item .num{font-size:28px}
}

/* Process */
.process{background:var(--bg)}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.process-grid::before{content:'';position:absolute;top:48px;left:12%;right:12%;height:2px;background:linear-gradient(90deg,var(--secondary),var(--accent),var(--secondary));opacity:0.3;z-index:0}
.process-step{text-align:center;position:relative;z-index:1}
.process-step .step-num{width:96px;height:96px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:28px;font-weight:900;color:var(--text-white);position:relative;box-shadow:0 8px 30px rgba(59,130,246,0.25)}
.process-step .step-num.step1{background:linear-gradient(135deg,#3b82f6,#60a5fa)}
.process-step .step-num.step2{background:linear-gradient(135deg,#22c55e,#4ade80)}
.process-step .step-num.step3{background:linear-gradient(135deg,#f59e0b,#fbbf24)}
.process-step .step-num.step4{background:linear-gradient(135deg,#ec4899,#f472b6)}
.process-step h3{font-size:18px;font-weight:700;color:var(--primary);margin-bottom:6px}
.process-step p{font-size:14px;color:var(--text-light);line-height:1.7;max-width:200px;margin:0 auto}
@media(max-width:768px){
  .process-grid{grid-template-columns:repeat(2,1fr);gap:32px 16px}
  .process-grid::before{display:none}
  .process-step .step-num{width:72px;height:72px;font-size:22px}
}
@media(max-width:520px){
  .process-grid{grid-template-columns:1fr 1fr;gap:24px 12px}
}

/* FAQ */
.faq{background:var(--bg-white)}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;transition:all var(--transition);background:var(--bg-card)}
.faq-item:hover{border-color:var(--secondary);box-shadow:0 2px 12px rgba(59,130,246,0.06)}
.faq-item.open{border-color:var(--secondary)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--primary);background:none;width:100%;text-align:left;gap:16px;transition:color var(--transition)}
.faq-question:hover{color:var(--secondary)}
.faq-question i{font-size:14px;color:var(--text-muted);transition:transform var(--transition);flex-shrink:0}
.faq-item.open .faq-question i{transform:rotate(180deg);color:var(--secondary)}
.faq-answer{padding:0 24px;max-height:0;overflow:hidden;transition:all 0.4s ease;color:var(--text-light);font-size:15px;line-height:1.8}
.faq-item.open .faq-answer{padding:0 24px 24px;max-height:300px}
@media(max-width:520px){
  .faq-question{padding:16px 18px;font-size:15px}
  .faq-item.open .faq-answer{padding:0 18px 18px}
}

/* CTA */
.cta-section{background:var(--primary-dark);position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center center/cover no-repeat;opacity:0.08}
.cta-section .container{position:relative;z-index:2;text-align:center;padding:80px 24px}
.cta-section h2{font-size:38px;font-weight:800;color:var(--text-white);margin-bottom:16px}
.cta-section p{font-size:18px;color:rgba(255,255,255,0.65);max-width:560px;margin:0 auto 32px;line-height:1.7}
.cta-actions{display:flex;align-items:center;justify-content:center;gap:16px;flex-wrap:wrap}
@media(max-width:768px){
  .cta-section h2{font-size:28px}
  .cta-section p{font-size:16px}
  .cta-section .container{padding:56px 24px}
}
@media(max-width:520px){
  .cta-actions{flex-direction:column;width:100%}
  .cta-actions .btn{width:100%;justify-content:center}
}

/* Footer */
.footer{background:var(--primary-dark);border-top:1px solid rgba(255,255,255,0.06);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{font-size:20px;margin-bottom:16px}
.footer-brand p{font-size:14px;color:rgba(255,255,255,0.5);line-height:1.8;max-width:320px}
.footer-social{display:flex;gap:12px;margin-top:20px}
.footer-social a{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.06);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.5);font-size:16px;transition:all var(--transition);border:1px solid rgba(255,255,255,0.06)}
.footer-social a:hover{background:var(--secondary);color:var(--text-white);border-color:var(--secondary);transform:translateY(-3px)}
.footer h4{font-size:15px;font-weight:700;color:var(--text-white);margin-bottom:16px;letter-spacing:0.5px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:14px;color:rgba(255,255,255,0.5);transition:all var(--transition)}
.footer-links a:hover{color:var(--secondary);padding-left:4px}
.footer-contact{display:flex;flex-direction:column;gap:12px}
.footer-contact .contact-item{display:flex;align-items:flex-start;gap:12px;font-size:14px;color:rgba(255,255,255,0.5)}
.footer-contact .contact-item i{color:var(--secondary);font-size:15px;margin-top:3px;flex-shrink:0}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding:20px 0;text-align:center}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,0.35)}
.footer-bottom a{color:rgba(255,255,255,0.35)}
.footer-bottom a:hover{color:var(--secondary)}
@media(max-width:768px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
}

/* Back to top */
.back-top{position:fixed;bottom:32px;right:32px;z-index:999;width:48px;height:48px;border-radius:50%;background:var(--secondary);color:var(--text-white);font-size:20px;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(59,130,246,0.4);opacity:0;transform:translateY(20px);pointer-events:none;transition:all var(--transition)}
.back-top.show{opacity:1;transform:translateY(0);pointer-events:auto}
.back-top:hover{background:var(--secondary-hover);transform:translateY(-4px);box-shadow:0 8px 28px rgba(59,130,246,0.5)}

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e74c3c;
            --primary-dark: #c0392b;
            --primary-light: #fadbd8;
            --secondary: #2c3e50;
            --secondary-light: #34495e;
            --accent: #f39c12;
            --accent-light: #fef3e2;
            --bg-body: #f8f9fa;
            --bg-white: #ffffff;
            --bg-dark: #1a1a2e;
            --bg-card: #ffffff;
            --text-primary: #1a1a2e;
            --text-secondary: #4a4a6a;
            --text-muted: #8888a0;
            --text-white: #ffffff;
            --border-color: #e8e8f0;
            --border-light: #f0f0f5;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-hover: 0 12px 36px rgba(231, 76, 60, 0.15);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
            --spacing-section: 80px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text-primary);
            background: var(--bg-body);
            min-height: 100vh;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: var(--radius-sm);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-sm);
        }

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
            padding: 0;
        }

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

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header & Navigation ===== */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            height: var(--header-height);
            transition: var(--transition);
        }

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

        .header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 24px;
            font-weight: 800;
            color: var(--primary);
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }
        .logo i {
            font-size: 28px;
            color: var(--primary);
        }
        .logo span {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .logo:hover {
            opacity: 0.9;
        }

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

        .nav a {
            padding: 8px 20px;
            border-radius: var(--radius-xl);
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
            letter-spacing: 0.3px;
        }
        .nav a:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav a.active {
            color: var(--text-white);
            background: var(--primary);
            box-shadow: 0 4px 16px rgba(231, 76, 60, 0.35);
        }
        .nav a.active:hover {
            color: var(--text-white);
            background: var(--primary-dark);
        }

        .nav-cta {
            padding: 8px 24px !important;
            border-radius: var(--radius-xl) !important;
            font-weight: 600 !important;
            color: var(--text-white) !important;
            background: var(--primary) !important;
            box-shadow: 0 4px 16px rgba(231, 76, 60, 0.3);
        }
        .nav-cta:hover {
            background: var(--primary-dark) !important;
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(231, 76, 60, 0.4) !important;
        }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--text-primary);
            border-radius: 4px;
            transition: var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* ===== Page Banner (分类页首屏) ===== */
        .page-banner {
            padding: 140px 0 70px;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 50%, #0f3460 100%);
            position: relative;
            overflow: hidden;
            min-height: 340px;
            display: flex;
            align-items: center;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(circle at 20% 80%, rgba(231, 76, 60, 0.2), transparent 60%),
                radial-gradient(circle at 80% 20%, rgba(243, 156, 18, 0.15), transparent 50%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 44px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
        }
        .page-banner p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 680px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .page-banner .banner-tags {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 10px;
        }
        .page-banner .banner-tags span {
            padding: 6px 18px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            border-radius: var(--radius-xl);
            font-size: 13px;
            color: rgba(255, 255, 255, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        /* ===== Section Common ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .section-header p {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header .section-line {
            width: 64px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 4px;
            margin: 16px auto 0;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb {
            padding: 12px 0;
            background: var(--bg-white);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: var(--header-height);
            z-index: 50;
        }
        .breadcrumb .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb a {
            color: var(--text-secondary);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border-color);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* ===== Guide Cards Grid ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--border-color);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
        }
        .guide-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-body);
        }
        .guide-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .guide-card:hover .card-img img {
            transform: scale(1.06);
        }
        .guide-card .card-img .card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 14px;
            background: var(--primary);
            color: var(--text-white);
            font-size: 12px;
            font-weight: 600;
            border-radius: var(--radius-xl);
            letter-spacing: 0.5px;
            box-shadow: 0 2px 12px rgba(231, 76, 60, 0.3);
        }
        .guide-card .card-img .card-date {
            position: absolute;
            bottom: 14px;
            right: 14px;
            padding: 4px 12px;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(4px);
            color: rgba(255, 255, 255, 0.9);
            font-size: 12px;
            border-radius: var(--radius-sm);
        }
        .guide-card .card-body {
            padding: 22px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .card-body h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .guide-card .card-body h3 a {
            color: var(--text-primary);
        }
        .guide-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .guide-card .card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .guide-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--text-muted);
        }
        .guide-card .card-footer .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .guide-card .card-footer .meta-item i {
            font-size: 14px;
        }
        .guide-card .card-footer .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .guide-card .card-footer .read-more:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* ===== Category Filter Tabs ===== */
        .filter-tabs {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-bottom: 40px;
        }
        .filter-tabs .tab-btn {
            padding: 8px 24px;
            border-radius: var(--radius-xl);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
        }
        .filter-tabs .tab-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .filter-tabs .tab-btn.active {
            color: var(--text-white);
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 16px rgba(231, 76, 60, 0.3);
        }

        /* ===== Featured Guide (特色攻略推荐) ===== */
        .featured-guide {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border-color);
        }
        .featured-guide .featured-img {
            position: relative;
            min-height: 340px;
            overflow: hidden;
        }
        .featured-guide .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform 0.5s ease;
        }
        .featured-guide:hover .featured-img img {
            transform: scale(1.04);
        }
        .featured-guide .featured-img .featured-tag {
            position: absolute;
            top: 20px;
            left: 20px;
            padding: 6px 20px;
            background: var(--accent);
            color: var(--text-white);
            font-size: 13px;
            font-weight: 700;
            border-radius: var(--radius-xl);
            letter-spacing: 0.5px;
            box-shadow: 0 2px 16px rgba(243, 156, 18, 0.4);
        }
        .featured-guide .featured-body {
            padding: 40px 44px 44px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .featured-guide .featured-body .featured-label {
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 8px;
        }
        .featured-guide .featured-body h3 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 14px;
            line-height: 1.35;
        }
        .featured-guide .featured-body h3 a {
            color: var(--text-primary);
        }
        .featured-guide .featured-body h3 a:hover {
            color: var(--primary);
        }
        .featured-guide .featured-body p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .featured-guide .featured-body .btn-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-xl);
            font-size: 15px;
            font-weight: 600;
            color: var(--text-white);
            background: var(--primary);
            border: none;
            transition: var(--transition);
            cursor: pointer;
            box-shadow: 0 4px 16px rgba(231, 76, 60, 0.3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(231, 76, 60, 0.4);
            color: var(--text-white);
        }
        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-xl);
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            background: transparent;
            border: 2px solid var(--primary);
            transition: var(--transition);
            cursor: pointer;
        }
        .btn-outline:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(231, 76, 60, 0.25);
        }

        /* ===== Tips / 攻略小贴士 ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .tip-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 32px 24px 28px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .tip-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .tip-card .tip-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
            transition: var(--transition);
        }
        .tip-card:hover .tip-icon {
            background: var(--primary);
            color: var(--text-white);
            transform: scale(1.06);
        }
        .tip-card h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .tip-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .faq-item {
            background: var(--bg-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary-light);
            box-shadow: var(--shadow-sm);
        }
        .faq-item .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition);
            gap: 16px;
        }
        .faq-item .faq-question:hover {
            color: var(--primary);
        }
        .faq-item .faq-question i {
            font-size: 18px;
            color: var(--text-muted);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #16213e 100%);
            padding: 72px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 28px;
        }
        .cta-section .btn-group {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .cta-section .btn-primary {
            background: var(--accent);
            box-shadow: 0 4px 16px rgba(243, 156, 18, 0.35);
        }
        .cta-section .btn-primary:hover {
            background: #e67e22;
            box-shadow: 0 8px 28px rgba(243, 156, 18, 0.45);
        }
        .cta-section .btn-outline {
            border-color: rgba(255, 255, 255, 0.5);
            color: var(--text-white);
        }
        .cta-section .btn-outline:hover {
            background: var(--text-white);
            color: var(--bg-dark);
            border-color: var(--text-white);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 60px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }
        .footer-brand .logo {
            font-size: 22px;
            margin-bottom: 14px;
        }
        .footer-brand .logo i {
            color: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 18px;
            max-width: 360px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
        }
        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.6);
            font-size: 18px;
            transition: var(--transition);
        }
        .footer-social a:hover {
            background: var(--primary);
            color: var(--text-white);
            transform: translateY(-3px);
        }

        .footer-links-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 18px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }
        .contact-item i {
            width: 20px;
            color: var(--primary);
            font-size: 15px;
        }

        .footer-bottom {
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        .footer-bottom p {
            margin: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .guide-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-guide {
                grid-template-columns: 1fr;
            }
            .featured-guide .featured-img {
                min-height: 260px;
            }
            .featured-guide .featured-body {
                padding: 28px 32px 32px;
            }
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-height: 64px;
                --spacing-section: 50px;
            }

            .menu-toggle {
                display: flex;
            }

            .nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--bg-white);
                flex-direction: column;
                padding: 16px 20px 20px;
                box-shadow: var(--shadow-lg);
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-120%);
                opacity: 0;
                transition: var(--transition);
                pointer-events: none;
                gap: 4px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
            }
            .nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .nav a {
                width: 100%;
                text-align: center;
                padding: 12px 16px;
                font-size: 16px;
                border-radius: var(--radius-sm);
            }
            .nav a.active {
                border-radius: var(--radius-sm);
            }
            .nav .nav-cta {
                margin-top: 4px;
            }

            .page-banner {
                padding: 110px 0 50px;
                min-height: 260px;
            }
            .page-banner h1 {
                font-size: 30px;
            }
            .page-banner p {
                font-size: 16px;
            }

            .section-header h2 {
                font-size: 26px;
            }

            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .featured-guide .featured-body h3 {
                font-size: 22px;
            }
            .featured-guide .featured-body {
                padding: 24px 24px 28px;
            }

            .tips-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .tip-card {
                padding: 24px 16px 20px;
            }

            .filter-tabs {
                gap: 8px;
            }
            .filter-tabs .tab-btn {
                padding: 6px 16px;
                font-size: 13px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }

            .faq-item .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px;
                font-size: 14px;
            }
            .faq-item.active .faq-answer {
                padding: 0 18px 16px;
            }

            .cta-section h2 {
                font-size: 26px;
            }
            .cta-section p {
                font-size: 15px;
            }
        }

        @media (max-width: 520px) {
            .page-banner h1 {
                font-size: 24px;
            }
            .page-banner p {
                font-size: 14px;
            }
            .page-banner .banner-tags span {
                font-size: 12px;
                padding: 4px 12px;
            }

            .section-header h2 {
                font-size: 22px;
            }
            .section-header p {
                font-size: 14px;
            }

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

            .featured-guide .featured-body h3 {
                font-size: 19px;
            }
            .featured-guide .featured-body p {
                font-size: 14px;
            }

            .guide-card .card-body {
                padding: 16px 18px 18px;
            }
            .guide-card .card-body h3 {
                font-size: 16px;
            }

            .btn-primary,
            .btn-outline {
                padding: 10px 20px;
                font-size: 14px;
            }

            .cta-section .btn-group {
                flex-direction: column;
                align-items: center;
            }

            .breadcrumb {
                font-size: 12px;
                overflow-x: auto;
                white-space: nowrap;
                -webkit-overflow-scrolling: touch;
            }
        }

/* roulang page: article */
:root {
--primary: #3b82f6;
--primary-dark: #1e40af;
--primary-light: #93c5fd;
--accent: #f59e0b;
--accent-dark: #d97706;
--bg-body: #f8fafc;
--bg-card: #ffffff;
--bg-dark: #0f172a;
--bg-section-alt: #f1f5f9;
--text-primary: #0f172a;
--text-secondary: #475569;
--text-light: #94a3b8;
--text-white: #f8fafc;
--border: #e2e8f0;
--radius: 12px;
--radius-sm: 8px;
--radius-lg: 20px;
--shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
--shadow: 0 4px 12px rgba(0,0,0,0.08);
--shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
--transition: 0.25s ease;
--font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
--container: 1200px;
--header-h: 72px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font-sans); background: var(--bg-body); color: var(--text-primary); line-height: 1.6; font-size: 16px; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
@media (max-width: 768px) { .container { padding: 0 16px; } }
/* Header & Nav */
.header { position: fixed; top: 0; left: 0; width: 100%; height: var(--header-h); background: rgba(255,255,255,0.96); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); z-index: 1000; transition: var(--transition); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 1.35rem; font-weight: 700; color: var(--primary-dark); letter-spacing: -0.02em; }
.logo i { font-size: 1.5rem; color: var(--primary); }
.logo span { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.logo:hover { color: var(--primary-dark); opacity: 0.9; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav a { position: relative; padding: 8px 18px; border-radius: var(--radius-sm); font-size: 0.95rem; font-weight: 500; color: var(--text-secondary); transition: var(--transition); }
.nav a:hover { color: var(--primary); background: rgba(59,130,246,0.08); }
.nav a.active { color: var(--primary-dark); background: rgba(59,130,246,0.12); font-weight: 600; }
.nav a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 4px; }
.nav-cta { background: var(--primary) !important; color: #fff !important; padding: 8px 22px !important; border-radius: var(--radius-sm) !important; font-weight: 600 !important; box-shadow: 0 2px 8px rgba(59,130,246,0.3); }
.nav-cta:hover { background: var(--primary-dark) !important; color: #fff !important; transform: translateY(-1px); box-shadow: 0 4px 16px rgba(59,130,246,0.4); }
.mobile-toggle { display: none; background: none; border: none; font-size: 1.5rem; color: var(--text-primary); cursor: pointer; padding: 4px 8px; border-radius: 6px; }
@media (max-width: 768px) {
.mobile-toggle { display: block; }
.nav { position: fixed; top: var(--header-h); left: 0; width: 100%; background: rgba(255,255,255,0.98); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); flex-direction: column; padding: 16px 20px; gap: 4px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow); transform: translateY(-110%); opacity: 0; pointer-events: none; transition: 0.35s ease; }
.nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
.nav a { width: 100%; padding: 12px 16px; border-radius: 8px; font-size: 1.05rem; }
.nav a.active::after { display: none; }
.nav a.active { background: rgba(59,130,246,0.12); }
.nav-cta { text-align: center; margin-top: 6px; }
}
/* Page Hero */
.page-hero { position: relative; margin-top: var(--header-h); padding: 80px 0 60px; background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); overflow: hidden; min-height: 280px; display: flex; align-items: center; }
.page-hero .hero-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; opacity: 0.2; }
.page-hero .hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,23,42,0.85) 0%, rgba(30,41,59,0.75) 100%); }
.page-hero .container { position: relative; z-index: 2; }
.breadcrumb-wrap { display: flex; align-items: center; gap: 8px; font-size: 0.9rem; color: var(--text-light); margin-bottom: 16px; flex-wrap: wrap; }
.breadcrumb-wrap a { color: var(--primary-light); }
.breadcrumb-wrap a:hover { color: #fff; text-decoration: underline; }
.breadcrumb-wrap span { color: var(--text-light); }
.page-hero .hero-category { display: inline-block; padding: 4px 14px; border-radius: 20px; background: rgba(59,130,246,0.2); color: var(--primary-light); font-size: 0.85rem; font-weight: 500; border: 1px solid rgba(59,130,246,0.3); margin-bottom: 14px; }
.page-hero h1 { font-size: 2.2rem; font-weight: 800; color: #fff; line-height: 1.25; max-width: 900px; letter-spacing: -0.02em; margin-bottom: 6px; }
@media (max-width: 768px) {
.page-hero { padding: 60px 0 40px; min-height: 220px; }
.page-hero h1 { font-size: 1.6rem; }
}
/* Article Main Layout */
.article-main { padding: 48px 0 60px; }
.article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 40px; }
.article-content { background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 40px; border: 1px solid var(--border); }
.article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 24px; padding-bottom: 20px; margin-bottom: 28px; border-bottom: 1px solid var(--border); font-size: 0.92rem; color: var(--text-secondary); }
.article-meta .meta-item { display: flex; align-items: center; gap: 6px; }
.article-meta .meta-item i { color: var(--primary); width: 16px; }
.article-meta .meta-cat { padding: 2px 12px; border-radius: 12px; background: rgba(59,130,246,0.1); color: var(--primary-dark); font-weight: 500; font-size: 0.82rem; }
.article-featured-img { border-radius: var(--radius-sm); overflow: hidden; margin-bottom: 28px; box-shadow: var(--shadow-sm); }
.article-featured-img img { width: 100%; height: auto; object-fit: cover; aspect-ratio: 16/9; }
.article-body { font-size: 1.05rem; line-height: 1.85; color: var(--text-primary); }
.article-body p { margin-bottom: 1.2em; }
.article-body img { border-radius: var(--radius-sm); margin: 1.5em 0; }
.article-body h2, .article-body h3 { margin-top: 1.6em; margin-bottom: 0.6em; font-weight: 700; color: var(--text-primary); }
.article-body h2 { font-size: 1.5rem; }
.article-body h3 { font-size: 1.2rem; }
.article-body ul, .article-body ol { padding-left: 1.5em; margin-bottom: 1.2em; }
.article-body li { margin-bottom: 0.4em; }
.article-body blockquote { border-left: 4px solid var(--primary); padding: 12px 20px; margin: 1.5em 0; background: rgba(59,130,246,0.04); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; color: var(--text-secondary); font-style: italic; }
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 32px; padding-top: 20px; border-top: 1px solid var(--border); }
.article-tags .tag { padding: 4px 14px; border-radius: 16px; background: var(--bg-section-alt); color: var(--text-secondary); font-size: 0.85rem; border: 1px solid var(--border); transition: var(--transition); }
.article-tags .tag:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.article-not-found { text-align: center; padding: 60px 20px; }
.article-not-found i { font-size: 3.5rem; color: var(--text-light); margin-bottom: 20px; }
.article-not-found h2 { font-size: 1.8rem; font-weight: 700; color: var(--text-primary); margin-bottom: 12px; }
.article-not-found p { color: var(--text-secondary); margin-bottom: 24px; font-size: 1.05rem; }
.article-not-found .btn { display: inline-block; padding: 12px 32px; border-radius: var(--radius-sm); background: var(--primary); color: #fff; font-weight: 600; }
.article-not-found .btn:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: var(--shadow); }
/* Sidebar */
.article-sidebar { display: flex; flex-direction: column; gap: 28px; }
.sidebar-card { background: var(--bg-card); border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 24px; border: 1px solid var(--border); }
.sidebar-card h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-primary); margin-bottom: 16px; padding-bottom: 12px; border-bottom: 2px solid var(--primary); position: relative; }
.sidebar-card h3::after { content: ''; position: absolute; bottom: -2px; left: 0; width: 40px; height: 2px; background: var(--primary); }
.sidebar-posts { list-style: none; padding: 0; margin: 0; }
.sidebar-posts li { padding: 12px 0; border-bottom: 1px solid var(--border); }
.sidebar-posts li:last-child { border-bottom: none; }
.sidebar-posts a { display: flex; gap: 12px; color: var(--text-primary); font-weight: 500; font-size: 0.95rem; line-height: 1.4; }
.sidebar-posts a:hover { color: var(--primary); }
.sidebar-posts .post-thumb { width: 60px; height: 60px; border-radius: 6px; object-fit: cover; flex-shrink: 0; }
.sidebar-posts .post-info { flex: 1; }
.sidebar-posts .post-title { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.sidebar-posts .post-date { font-size: 0.8rem; color: var(--text-light); margin-top: 4px; }
.sidebar-cat-list { list-style: none; padding: 0; margin: 0; }
.sidebar-cat-list li { padding: 10px 0; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.sidebar-cat-list li:last-child { border-bottom: none; }
.sidebar-cat-list a { color: var(--text-secondary); font-weight: 500; }
.sidebar-cat-list a:hover { color: var(--primary); padding-left: 4px; }
.sidebar-cat-list .count { color: var(--text-light); font-size: 0.85rem; background: var(--bg-section-alt); padding: 2px 10px; border-radius: 12px; }
.sidebar-cta { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; border: none; text-align: center; }
.sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.2); }
.sidebar-cta h3::after { background: #fff; }
.sidebar-cta p { font-size: 0.95rem; opacity: 0.9; margin-bottom: 18px; }
.sidebar-cta .btn { background: #fff; color: var(--primary-dark); font-weight: 700; padding: 10px 24px; border-radius: var(--radius-sm); border: none; transition: var(--transition); }
.sidebar-cta .btn:hover { background: var(--accent); color: #fff; transform: translateY(-2px); box-shadow: 0 4px 16px rgba(0,0,0,0.2); }
/* Article Navigation */
.article-nav { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.article-nav a { display: flex; align-items: center; gap: 10px; padding: 12px 20px; border-radius: var(--radius-sm); background: var(--bg-section-alt); color: var(--text-primary); font-weight: 500; font-size: 0.95rem; border: 1px solid var(--border); transition: var(--transition); flex: 1; max-width: 48%; }
.article-nav a:hover { background: var(--primary); color: #fff; border-color: var(--primary); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.article-nav a i { font-size: 1.1rem; }
.article-nav .nav-next { text-align: right; justify-content: flex-end; }
@media (max-width: 640px) { .article-nav a { max-width: 100%; flex: 1 1 100%; } }
/* Related Section */
.related-section { padding: 48px 0; background: var(--bg-section-alt); }
.related-section .section-title { text-align: center; font-size: 1.8rem; font-weight: 800; color: var(--text-primary); margin-bottom: 8px; }
.related-section .section-sub { text-align: center; color: var(--text-secondary); margin-bottom: 36px; font-size: 1.05rem; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.related-card { background: var(--bg-card); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border); transition: var(--transition); }
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.related-card .card-img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.related-card .card-body { padding: 18px 20px 20px; }
.related-card .card-cat { display: inline-block; padding: 2px 12px; border-radius: 12px; background: rgba(59,130,246,0.1); color: var(--primary-dark); font-size: 0.8rem; font-weight: 500; margin-bottom: 8px; }
.related-card .card-title { font-size: 1.05rem; font-weight: 700; color: var(--text-primary); line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 8px; }
.related-card .card-title a { color: inherit; }
.related-card .card-title a:hover { color: var(--primary); }
.related-card .card-meta { font-size: 0.85rem; color: var(--text-light); display: flex; align-items: center; gap: 12px; }
@media (max-width: 992px) { .related-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .related-grid { grid-template-columns: 1fr; } }
/* CTA Section */
.cta-section { padding: 60px 0; background: linear-gradient(135deg, #0f172a, #1e293b); position: relative; overflow: hidden; }
.cta-section .cta-bg { position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-2.png'); background-size: cover; background-position: center; opacity: 0.1; }
.cta-section .container { position: relative; z-index: 2; text-align: center; }
.cta-section h2 { font-size: 1.8rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-section p { font-size: 1.1rem; color: var(--text-light); max-width: 600px; margin: 0 auto 28px; }
.cta-section .cta-btns { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.cta-section .btn-primary-custom { padding: 14px 36px; border-radius: var(--radius-sm); background: var(--primary); color: #fff; font-weight: 700; font-size: 1.05rem; border: none; transition: var(--transition); }
.cta-section .btn-primary-custom:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(59,130,246,0.4); }
.cta-section .btn-outline-custom { padding: 14px 36px; border-radius: var(--radius-sm); background: transparent; color: #fff; font-weight: 700; font-size: 1.05rem; border: 2px solid rgba(255,255,255,0.3); transition: var(--transition); }
.cta-section .btn-outline-custom:hover { background: rgba(255,255,255,0.1); border-color: #fff; transform: translateY(-2px); }
/* Footer */
.footer { background: #0b1120; color: var(--text-light); padding: 56px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1.2fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo i { color: var(--primary-light); }
.footer-brand .logo span { -webkit-text-fill-color: #fff; background: none; }
.footer-brand p { font-size: 0.92rem; line-height: 1.7; color: var(--text-light); max-width: 360px; }
.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: rgba(255,255,255,0.06); color: var(--text-light); font-size: 1.1rem; transition: var(--transition); }
.footer-social a:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.footer-links-col h4 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { color: var(--text-light); font-size: 0.92rem; transition: var(--transition); }
.footer-links a:hover { color: var(--primary-light); padding-left: 4px; }
.footer-contact .contact-item { display: flex; align-items: center; gap: 10px; font-size: 0.92rem; margin-bottom: 12px; color: var(--text-light); }
.footer-contact .contact-item i { width: 18px; color: var(--primary-light); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.06); padding: 20px 0; text-align: center; font-size: 0.88rem; color: var(--text-light); }
.footer-bottom p { margin: 0; }
@media (max-width: 992px) { .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; } }
@media (max-width: 640px) { .footer-grid { grid-template-columns: 1fr; gap: 28px; } }
/* Responsive Article Layout */
@media (max-width: 1024px) { .article-layout { grid-template-columns: 1fr; } .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; } }
@media (max-width: 640px) { .article-content { padding: 20px; } .article-sidebar { grid-template-columns: 1fr; } .article-meta { gap: 10px; font-size: 0.85rem; } }
/* Misc */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0; }