/* roulang page: index */
:root {
  --primary: #00d4ff;
  --primary-dark: #00b8d9;
  --primary-glow: rgba(0, 212, 255, 0.25);
  --secondary: #7c3aed;
  --secondary-dark: #6d28d9;
  --secondary-glow: rgba(124, 58, 237, 0.25);
  --accent: #f59e0b;
  --accent-glow: rgba(245, 158, 11, 0.2);
  --bg-deep: #07070d;
  --bg-base: #0b0b12;
  --bg-surface: #12121f;
  --bg-card: #181830;
  --bg-card-hover: #1f1f3a;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-color: #2a2a45;
  --border-glow: rgba(0, 212, 255, 0.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.08);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{font-family:'Inter',system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;background:var(--bg-deep);color:var(--text-primary);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
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:4px}
img{max-width:100%;height:auto;display:block}
button,input,textarea,select{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:none;background:none;color:inherit}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media(max-width:640px){.container{padding:0 16px}}
/* header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(7,7,13,0.92);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);transition:var(--transition)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.site-logo{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--text-primary);letter-spacing:-0.5px}
.site-logo .logo-icon{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--secondary));color:#fff;font-size:18px;box-shadow:0 0 20px var(--primary-glow)}
.site-logo .logo-text{background:linear-gradient(135deg,var(--text-primary) 30%,var(--primary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.site-logo:hover{opacity:0.9}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-main a{display:flex;align-items:center;gap:6px;padding:8px 18px;border-radius:var(--radius-sm);color:var(--text-secondary);font-size:15px;font-weight:500;transition:var(--transition);position:relative}
.nav-main a i{font-size:14px;opacity:0.7}
.nav-main a:hover{color:var(--text-primary);background:rgba(255,255,255,0.05)}
.nav-main a.active{color:var(--primary);background:rgba(0,212,255,0.08)}
.nav-main a.active::after{content:'';position:absolute;bottom:-1px;left:50%;transform:translateX(-50%);width:60%;height:2px;background:var(--primary);border-radius:2px;box-shadow:0 0 12px var(--primary-glow)}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn-nav{display:inline-flex;align-items:center;gap:8px;padding:10px 24px;border-radius:var(--radius-sm);font-size:14px;font-weight:600;transition:var(--transition)}
.nav-cta .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#0b0b12;box-shadow:0 0 20px var(--primary-glow)}
.nav-cta .btn-primary:hover{box-shadow:0 0 35px var(--primary-glow);transform:translateY(-1px);color:#0b0b12}
.mobile-toggle{display:none;width:40px;height:40px;align-items:center;justify-content:center;border-radius:8px;font-size:20px;color:var(--text-secondary);transition:var(--transition);background:rgba(255,255,255,0.05)}
.mobile-toggle:hover{background:rgba(255,255,255,0.1);color:var(--text-primary)}
@media(max-width:768px){
  .nav-main{display:none;position:absolute;top:72px;left:0;right:0;background:rgba(7,7,13,0.98);backdrop-filter:blur(20px);flex-direction:column;padding:16px;border-bottom:1px solid var(--border-color);gap:4px}
  .nav-main.open{display:flex}
  .nav-main a{width:100%;padding:12px 16px;border-radius:var(--radius-sm)}
  .nav-main a.active::after{display:none}
  .nav-cta .btn-nav span{display:none}
  .mobile-toggle{display:flex}
}
@media(max-width:520px){
  .site-logo{font-size:18px}
  .site-logo .logo-icon{width:32px;height:32px;font-size:15px}
  .nav-cta .btn-nav{padding:8px 16px;font-size:13px}
}
/* hero */
.hero-section{position:relative;min-height:92vh;display:flex;align-items:center;padding:120px 0 80px;overflow:hidden;background:var(--bg-deep)}
.hero-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center center/cover no-repeat;opacity:0.25;transform:scale(1.02);filter:saturate(1.1)}
.hero-section::after{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(7,7,13,0.92) 30%,rgba(7,7,13,0.6) 60%,rgba(7,7,13,0.3));z-index:1}
.hero-glow{position:absolute;top:-20%;right:-10%;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(0,212,255,0.08),transparent 70%);z-index:1;pointer-events:none}
.hero-glow-2{position:absolute;bottom:-30%;left:-15%;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(124,58,237,0.06),transparent 70%);z-index:1;pointer-events:none}
.hero-content{position:relative;z-index:2;max-width:780px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:50px;background:rgba(0,212,255,0.1);border:1px solid rgba(0,212,255,0.2);color:var(--primary);font-size:13px;font-weight:500;margin-bottom:24px;backdrop-filter:blur(10px)}
.hero-badge i{font-size:12px}
.hero-title{font-size:clamp(2.4rem,6vw,4.2rem);font-weight:800;line-height:1.12;letter-spacing:-1.5px;margin-bottom:20px;color:var(--text-primary)}
.hero-title .highlight{background:linear-gradient(135deg,var(--primary),var(--secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-desc{font-size:clamp(1rem,2vw,1.2rem);color:var(--text-secondary);max-width:600px;margin-bottom:36px;line-height:1.8}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px}
.hero-actions .btn{display:inline-flex;align-items:center;gap:10px;padding:16px 36px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;transition:var(--transition);position:relative}
.hero-actions .btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#0b0b12;box-shadow:0 0 30px var(--primary-glow)}
.hero-actions .btn-primary:hover{box-shadow:0 0 50px var(--primary-glow);transform:translateY(-2px);color:#0b0b12}
.hero-actions .btn-outline{border:1px solid var(--border-color);color:var(--text-primary);background:rgba(255,255,255,0.03);backdrop-filter:blur(10px)}
.hero-actions .btn-outline:hover{border-color:var(--primary);background:rgba(0,212,255,0.06);color:var(--primary);transform:translateY(-2px)}
.hero-stats{display:flex;flex-wrap:wrap;gap:32px 48px;margin-top:48px;padding-top:32px;border-top:1px solid rgba(255,255,255,0.06)}
.hero-stats .stat-item{}
.hero-stats .stat-number{font-size:28px;font-weight:800;color:var(--text-primary);letter-spacing:-0.5px}
.hero-stats .stat-number .num-highlight{color:var(--primary)}
.hero-stats .stat-label{font-size:14px;color:var(--text-muted);margin-top:2px}
@media(max-width:768px){
  .hero-section{min-height:auto;padding:100px 0 60px}
  .hero-title{font-size:2rem}
  .hero-desc{font-size:1rem}
  .hero-actions .btn{padding:14px 28px;font-size:15px}
  .hero-stats{gap:24px 32px;margin-top:32px;padding-top:24px}
  .hero-stats .stat-number{font-size:24px}
}
@media(max-width:520px){
  .hero-section{padding:90px 0 50px}
  .hero-title{font-size:1.7rem}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{justify-content:center}
  .hero-stats{gap:20px 24px}
  .hero-stats .stat-number{font-size:20px}
}
/* sections */
.section{padding:80px 0}
.section-dark{background:var(--bg-base)}
.section-surface{background:var(--bg-surface)}
.section-header{text-align:center;margin-bottom:52px}
.section-header .section-label{display:inline-flex;align-items:center;gap:6px;padding:4px 14px;border-radius:50px;background:rgba(0,212,255,0.08);color:var(--primary);font-size:13px;font-weight:500;margin-bottom:14px;border:1px solid rgba(0,212,255,0.12)}
.section-header h2{font-size:clamp(1.6rem,3.5vw,2.6rem);font-weight:800;letter-spacing:-0.5px;color:var(--text-primary);margin-bottom:12px}
.section-header p{color:var(--text-secondary);max-width:560px;margin:0 auto;font-size:1.05rem}
.section-header .section-line{width:60px;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:3px;margin:16px auto 0;box-shadow:0 0 20px var(--primary-glow)}
@media(max-width:640px){
  .section{padding:56px 0}
  .section-header{margin-bottom:36px}
  .section-header h2{font-size:1.4rem}
}
/* feature cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:36px 28px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary));opacity:0;transition:var(--transition)}
.feature-card:hover{transform:translateY(-4px);border-color:rgba(0,212,255,0.2);box-shadow:var(--shadow-card),var(--shadow-glow);background:var(--bg-card-hover)}
.feature-card:hover::before{opacity:1}
.feature-icon{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:14px;background:linear-gradient(135deg,rgba(0,212,255,0.12),rgba(124,58,237,0.12));color:var(--primary);font-size:22px;margin-bottom:18px;transition:var(--transition)}
.feature-card:hover .feature-icon{background:linear-gradient(135deg,rgba(0,212,255,0.2),rgba(124,58,237,0.2));box-shadow:0 0 30px var(--primary-glow)}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text-primary)}
.feature-card p{font-size:14px;color:var(--text-secondary);line-height:1.7}
@media(max-width:1024px){
  .feature-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .feature-grid{grid-template-columns:1fr;gap:16px}
  .feature-card{padding:28px 20px}
}
/* category cards */
.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.category-card{position:relative;border-radius:var(--radius-md);overflow:hidden;background:var(--bg-card);border:1px solid var(--border-color);transition:var(--transition);cursor:pointer;aspect-ratio:4/3;display:flex;align-items:flex-end}
.category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:var(--transition);opacity:0.55}
.category-card:hover img{transform:scale(1.05);opacity:0.7}
.category-card .overlay{position:absolute;inset:0;background:linear-gradient(0deg,rgba(7,7,13,0.85) 20%,transparent 60%);z-index:1}
.category-card .card-body{position:relative;z-index:2;padding:28px 24px;width:100%}
.category-card .card-body h3{font-size:20px;font-weight:700;color:var(--text-primary);margin-bottom:6px}
.category-card .card-body p{font-size:14px;color:var(--text-secondary);margin-bottom:12px}
.category-card .card-body .tag{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:50px;background:rgba(0,212,255,0.15);color:var(--primary);font-size:12px;font-weight:500;backdrop-filter:blur(8px)}
.category-card:hover{transform:translateY(-4px);border-color:rgba(0,212,255,0.25);box-shadow:var(--shadow-card),var(--shadow-glow)}
@media(max-width:768px){
  .category-grid{grid-template-columns:repeat(2,1fr);gap:16px}
}
@media(max-width:520px){
  .category-grid{grid-template-columns:1fr}
  .category-card{aspect-ratio:16/9}
}
/* news cards */
.news-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition)}
.news-card:hover{transform:translateY(-4px);border-color:rgba(0,212,255,0.2);box-shadow:var(--shadow-card),var(--shadow-glow);background:var(--bg-card-hover)}
.news-card .news-img{width:100%;aspect-ratio:16/9;object-fit:cover;display:block;background:var(--bg-surface)}
.news-card .news-body{padding:20px 22px 22px;flex:1;display:flex;flex-direction:column}
.news-card .news-meta{display:flex;align-items:center;gap:12px;margin-bottom:10px;font-size:12px;color:var(--text-muted)}
.news-card .news-meta .news-cat{padding:2px 10px;border-radius:50px;background:rgba(124,58,237,0.12);color:var(--secondary);font-weight:500}
.news-card .news-meta .news-date{display:flex;align-items:center;gap:4px}
.news-card h3{font-size:17px;font-weight:700;color:var(--text-primary);margin-bottom:8px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-card p{font-size:14px;color:var(--text-secondary);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:12px}
.news-card .news-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);margin-top:auto;align-self:flex-start}
.news-card .news-link i{font-size:12px;transition:var(--transition)}
.news-card:hover .news-link i{transform:translateX(4px)}
.news-empty{padding:48px 24px;text-align:center;color:var(--text-muted);background:var(--bg-card);border-radius:var(--radius-md);border:1px dashed var(--border-color);grid-column:1/-1}
.news-empty i{font-size:36px;margin-bottom:12px;opacity:0.5}
@media(max-width:768px){
  .news-grid{grid-template-columns:1fr;gap:16px}
  .news-card .news-body{padding:16px 18px 18px}
  .news-card h3{font-size:16px}
}
/* data section */
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.data-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:32px 20px;text-align:center;transition:var(--transition);position:relative;overflow:hidden}
.data-card::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:40%;height:2px;background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:0;transition:var(--transition)}
.data-card:hover{transform:translateY(-3px);border-color:rgba(0,212,255,0.15);box-shadow:var(--shadow-card)}
.data-card:hover::after{opacity:1}
.data-card .data-icon{font-size:28px;margin-bottom:12px;display:block;color:var(--primary)}
.data-card .data-number{font-size:32px;font-weight:800;color:var(--text-primary);letter-spacing:-0.5px;margin-bottom:4px}
.data-card .data-number .num-highlight{color:var(--primary)}
.data-card .data-label{font-size:14px;color:var(--text-muted)}
@media(max-width:900px){
  .data-grid{grid-template-columns:repeat(2,1fr);gap:16px}
}
@media(max-width:520px){
  .data-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .data-card{padding:24px 16px}
  .data-card .data-number{font-size:26px}
}
/* process */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative}
.process-grid::before{content:'';position:absolute;top:40px;left:10%;right:10%;height:2px;background:linear-gradient(90deg,var(--primary),var(--secondary),var(--primary));opacity:0.2;z-index:0}
.process-step{text-align:center;position:relative;z-index:1}
.process-step .step-number{display:flex;align-items:center;justify-content:center;width:56px;height:56px;border-radius:50%;background:linear-gradient(135deg,var(--primary-glow),var(--secondary-glow));border:2px solid rgba(0,212,255,0.2);color:var(--primary);font-size:20px;font-weight:800;margin:0 auto 18px;transition:var(--transition);box-shadow:0 0 30px var(--primary-glow)}
.process-step:hover .step-number{border-color:var(--primary);box-shadow:0 0 50px var(--primary-glow);transform:scale(1.05)}
.process-step h3{font-size:17px;font-weight:700;margin-bottom:6px;color:var(--text-primary)}
.process-step p{font-size:14px;color:var(--text-secondary);max-width:200px;margin:0 auto;line-height:1.6}
@media(max-width:900px){
  .process-grid{grid-template-columns:repeat(2,1fr);gap:32px 20px}
  .process-grid::before{display:none}
}
@media(max-width:520px){
  .process-grid{grid-template-columns:1fr;gap:28px}
}
/* faq */
.faq-list{max-width:780px;margin:0 auto;display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-md);overflow:hidden;transition:var(--transition)}
.faq-item:hover{border-color:rgba(0,212,255,0.15)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;padding:18px 24px;font-size:16px;font-weight:600;color:var(--text-primary);cursor:pointer;list-style:none;transition:var(--transition)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .faq-icon{font-size:14px;color:var(--primary);transition:var(--transition);flex-shrink:0}
.faq-item[open] summary .faq-icon{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--primary)}
.faq-item .faq-answer{padding:0 24px 20px;color:var(--text-secondary);font-size:15px;line-height:1.8}
@media(max-width:640px){
  .faq-item summary{padding:14px 18px;font-size:15px}
  .faq-item .faq-answer{padding:0 18px 16px;font-size:14px}
}
/* cta */
.cta-section{position:relative;padding:80px 0;overflow:hidden;background:var(--bg-surface)}
.cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center center/cover no-repeat;opacity:0.08;filter:saturate(0.8)}
.cta-box{position:relative;z-index:1;max-width:720px;margin:0 auto;text-align:center;padding:48px 40px;background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}
.cta-box h2{font-size:clamp(1.5rem,3vw,2.2rem);font-weight:800;margin-bottom:14px;color:var(--text-primary)}
.cta-box p{color:var(--text-secondary);margin-bottom:28px;font-size:1.05rem}
.cta-box .btn-cta{display:inline-flex;align-items:center;gap:10px;padding:16px 40px;border-radius:var(--radius-sm);font-size:16px;font-weight:600;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#0b0b12;box-shadow:0 0 30px var(--primary-glow);transition:var(--transition)}
.cta-box .btn-cta:hover{box-shadow:0 0 55px var(--primary-glow);transform:translateY(-2px);color:#0b0b12}
@media(max-width:640px){
  .cta-section{padding:56px 0}
  .cta-box{padding:32px 20px}
  .cta-box .btn-cta{width:100%;justify-content:center}
}
/* footer */
.site-footer{background:var(--bg-deep);border-top:1px solid var(--border-color);padding:60px 0 32px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}
.footer-brand .site-logo{margin-bottom:14px}
.footer-brand p{color:var(--text-secondary);font-size:14px;line-height:1.8;max-width:320px}
.footer-col h4{font-size:15px;font-weight:700;color:var(--text-primary);margin-bottom:16px}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px}
.footer-col ul li a{color:var(--text-secondary);font-size:14px;transition:var(--transition);display:flex;align-items:center;gap:6px}
.footer-col ul li a:hover{color:var(--primary);padding-left:4px}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;padding-top:24px;border-top:1px solid var(--border-color);font-size:13px;color:var(--text-muted);gap:12px}
.footer-bottom a{color:var(--text-muted)}
.footer-bottom a:hover{color:var(--primary)}
@media(max-width:900px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media(max-width:640px){
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center}
}
/* scrollbar */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}
/* selection */
::selection{background:rgba(0,212,255,0.25);color:#fff}

/* roulang page: article */
/* ===== 设计变量 ===== */
    :root {
        --primary: #ff2d55;
        --primary-light: #ff6b8a;
        --primary-dark: #c41e3a;
        --secondary: #00d4ff;
        --secondary-light: #66e5ff;
        --accent: #ffd700;
        --bg-dark: #0b0d17;
        --bg-darker: #070915;
        --bg-card: #13172b;
        --bg-card-hover: #1a1f39;
        --bg-section-alt: #0f1322;
        --text-primary: #f0f4ff;
        --text-secondary: #b0bcdd;
        --text-muted: #6b7a9e;
        --border-color: #1e2644;
        --border-glow: rgba(0, 212, 255, 0.15);
        --shadow-card: 0 8px 32px rgba(0,0,0,0.5);
        --shadow-glow: 0 0 30px rgba(255, 45, 85, 0.15);
        --radius-sm: 8px;
        --radius-md: 14px;
        --radius-lg: 22px;
        --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        --font-display: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
        --container-max: 1200px;
        --header-height: 72px;
    }

    /* ===== 基础 Reset ===== */
    *, *::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-body);
        background: var(--bg-dark);
        color: var(--text-primary);
        line-height: 1.7;
        font-size: 16px;
        overflow-x: hidden;
    }
    a { color: var(--secondary); text-decoration: none; transition: var(--transition); }
    a:hover { color: var(--secondary-light); }
    img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }
    ul, ol { list-style: none; }
    button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
    ::selection { background: var(--primary); color: #fff; }
    :focus-visible { outline: 2px solid var(--secondary); outline-offset: 3px; border-radius: 4px; }

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

    /* ===== 导航 ===== */
    .site-header {
        position: fixed;
        top: 0; left: 0; right: 0;
        z-index: 1000;
        height: var(--header-height);
        background: rgba(11, 13, 23, 0.92);
        backdrop-filter: blur(18px) saturate(1.3);
        border-bottom: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .site-header.scrolled { box-shadow: 0 4px 40px rgba(0,0,0,0.6); }
    .header-inner {
        display: flex;
        align-items: center;
        justify-content: space-between;
        height: 100%;
        max-width: var(--container-max);
        margin: 0 auto;
        padding: 0 24px;
    }
    .site-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-family: var(--font-display);
        font-weight: 800;
        font-size: 22px;
        color: var(--text-primary);
        letter-spacing: 0.5px;
        transition: var(--transition);
    }
    .site-logo:hover { color: var(--primary-light); transform: scale(1.02); }
    .site-logo .logo-icon {
        width: 38px; height: 38px;
        background: linear-gradient(135deg, var(--primary), var(--secondary));
        border-radius: 10px;
        display: flex; align-items: center; justify-content: center;
        font-size: 18px; color: #fff;
        box-shadow: 0 0 20px rgba(255, 45, 85, 0.25);
    }
    .site-logo .logo-text {
        background: linear-gradient(135deg, var(--text-primary), var(--secondary-light));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .nav-main {
        display: flex;
        align-items: center;
        gap: 8px;
    }
    .nav-main a {
        display: flex;
        align-items: center;
        gap: 7px;
        padding: 8px 18px;
        border-radius: 30px;
        font-size: 15px;
        font-weight: 500;
        color: var(--text-secondary);
        transition: var(--transition);
        position: relative;
        letter-spacing: 0.3px;
    }
    .nav-main a i { font-size: 14px; }
    .nav-main a:hover {
        color: var(--text-primary);
        background: rgba(255, 255, 255, 0.06);
    }
    .nav-main a.active {
        color: #fff;
        background: rgba(255, 45, 85, 0.18);
        box-shadow: inset 0 0 0 1px rgba(255, 45, 85, 0.25);
    }
    .nav-main a.active::after {
        content: '';
        position: absolute;
        bottom: -2px; left: 50%;
        transform: translateX(-50%);
        width: 24px; height: 3px;
        background: var(--primary);
        border-radius: 3px;
        box-shadow: 0 0 12px var(--primary);
    }
    .nav-toggle {
        display: none;
        background: none;
        font-size: 26px;
        color: var(--text-primary);
        cursor: pointer;
        padding: 4px 8px;
        border-radius: 8px;
        transition: var(--transition);
    }
    .nav-toggle:hover { background: rgba(255,255,255,0.06); }

    /* ===== 移动端导航 ===== */
    @media (max-width: 768px) {
        .nav-toggle { display: block; }
        .nav-main {
            position: fixed;
            top: var(--header-height); left: 0; right: 0;
            background: rgba(11, 13, 23, 0.98);
            backdrop-filter: blur(20px);
            flex-direction: column;
            padding: 20px 24px;
            gap: 6px;
            border-bottom: 1px solid var(--border-color);
            transform: translateY(-120%);
            opacity: 0;
            pointer-events: none;
            transition: var(--transition);
            box-shadow: 0 20px 60px rgba(0,0,0,0.6);
        }
        .nav-main.open {
            transform: translateY(0);
            opacity: 1;
            pointer-events: auto;
        }
        .nav-main a {
            width: 100%;
            padding: 12px 18px;
            border-radius: 12px;
            font-size: 16px;
        }
        .nav-main a.active::after { display: none; }
        .nav-main a.active { background: rgba(255, 45, 85, 0.15); }
    }

    /* ===== 文章 Banner ===== */
    .article-banner {
        margin-top: var(--header-height);
        position: relative;
        min-height: 380px;
        display: flex;
        align-items: flex-end;
        background: linear-gradient(135deg, var(--bg-darker) 0%, #0d1125 60%, #141a30 100%);
        overflow: hidden;
        padding: 60px 0 40px;
    }
    .article-banner::before {
        content: '';
        position: absolute;
        inset: 0;
        background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
        opacity: 0.15;
        filter: blur(2px);
    }
    .article-banner .overlay {
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, var(--bg-dark) 0%, transparent 60%, rgba(11,13,23,0.4) 100%);
    }
    .article-banner .container { position: relative; z-index: 2; width: 100%; }
    .article-breadcrumb {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 14px;
        color: var(--text-muted);
        margin-bottom: 16px;
        flex-wrap: wrap;
    }
    .article-breadcrumb a { color: var(--text-muted); }
    .article-breadcrumb a:hover { color: var(--secondary); }
    .article-breadcrumb .sep { color: var(--text-muted); opacity: 0.4; }
    .article-breadcrumb .current { color: var(--text-secondary); }
    .article-banner h1 {
        font-family: var(--font-display);
        font-size: clamp(28px, 4.5vw, 52px);
        font-weight: 800;
        line-height: 1.2;
        letter-spacing: 0.5px;
        background: linear-gradient(135deg, #fff 60%, var(--secondary-light));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
        max-width: 900px;
        margin-bottom: 20px;
    }
    .article-meta-bar {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 20px 30px;
        font-size: 14px;
        color: var(--text-muted);
        padding: 14px 0;
        border-top: 1px solid rgba(255,255,255,0.06);
    }
    .article-meta-bar .meta-item {
        display: flex;
        align-items: center;
        gap: 7px;
    }
    .article-meta-bar .meta-item i { color: var(--primary-light); font-size: 13px; }
    .article-meta-bar .category-badge {
        background: rgba(255, 45, 85, 0.15);
        color: var(--primary-light);
        padding: 4px 14px;
        border-radius: 30px;
        font-size: 12px;
        font-weight: 600;
        border: 1px solid rgba(255, 45, 85, 0.2);
    }

    /* ===== 文章主体 ===== */
    .article-main {
        padding: 50px 0 80px;
        background: var(--bg-dark);
    }
    .article-layout {
        display: grid;
        grid-template-columns: 1fr 320px;
        gap: 50px;
    }
    .article-body {
        min-width: 0;
    }
    .article-body .featured-image {
        width: 100%;
        border-radius: var(--radius-md);
        margin-bottom: 36px;
        box-shadow: var(--shadow-card);
        border: 1px solid var(--border-color);
        overflow: hidden;
    }
    .article-body .featured-image img {
        width: 100%;
        height: auto;
        max-height: 500px;
        object-fit: cover;
    }
    .article-content {
        font-size: 17px;
        line-height: 1.9;
        color: var(--text-secondary);
    }
    .article-content p {
        margin-bottom: 1.5em;
    }
    .article-content h2, .article-content h3 {
        font-family: var(--font-display);
        color: var(--text-primary);
        margin-top: 1.8em;
        margin-bottom: 0.7em;
        line-height: 1.3;
    }
    .article-content h2 { font-size: 26px; }
    .article-content h3 { font-size: 21px; }
    .article-content ul, .article-content ol {
        margin-bottom: 1.5em;
        padding-left: 1.6em;
    }
    .article-content ul { list-style: disc; }
    .article-content ol { list-style: decimal; }
    .article-content li { margin-bottom: 0.5em; }
    .article-content a { color: var(--secondary); text-decoration: underline; text-underline-offset: 3px; }
    .article-content a:hover { color: var(--secondary-light); }
    .article-content blockquote {
        border-left: 4px solid var(--primary);
        background: rgba(255, 45, 85, 0.06);
        padding: 18px 24px;
        margin: 1.8em 0;
        border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
        font-style: italic;
        color: var(--text-secondary);
    }
    .article-content img {
        border-radius: var(--radius-md);
        margin: 1.5em 0;
        border: 1px solid var(--border-color);
        box-shadow: var(--shadow-card);
    }
    .article-content code {
        background: rgba(255,255,255,0.06);
        padding: 2px 10px;
        border-radius: 6px;
        font-size: 0.9em;
        color: var(--primary-light);
    }
    .article-content pre {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 20px 24px;
        overflow-x: auto;
        margin: 1.5em 0;
        font-size: 15px;
        line-height: 1.6;
    }
    .article-content pre code { background: none; padding: 0; color: inherit; }

    .article-tags {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        margin-top: 40px;
        padding-top: 28px;
        border-top: 1px solid var(--border-color);
    }
    .article-tags .tag {
        background: rgba(255,255,255,0.05);
        color: var(--text-secondary);
        padding: 6px 18px;
        border-radius: 30px;
        font-size: 13px;
        border: 1px solid var(--border-color);
        transition: var(--transition);
    }
    .article-tags .tag:hover {
        background: rgba(255,45,85,0.1);
        border-color: var(--primary);
        color: var(--primary-light);
    }

    /* ===== 侧边栏 ===== */
    .article-sidebar {
        display: flex;
        flex-direction: column;
        gap: 30px;
    }
    .sidebar-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        padding: 24px;
        transition: var(--transition);
    }
    .sidebar-card:hover { border-color: rgba(0,212,255,0.2); box-shadow: 0 4px 24px rgba(0,0,0,0.3); }
    .sidebar-card h3 {
        font-size: 17px;
        font-weight: 700;
        margin-bottom: 16px;
        display: flex;
        align-items: center;
        gap: 10px;
        color: var(--text-primary);
    }
    .sidebar-card h3 i { color: var(--primary); font-size: 16px; }
    .sidebar-list { display: flex; flex-direction: column; gap: 12px; }
    .sidebar-list a {
        display: flex;
        align-items: flex-start;
        gap: 12px;
        color: var(--text-secondary);
        font-size: 14px;
        line-height: 1.5;
        padding: 8px 0;
        border-bottom: 1px solid rgba(255,255,255,0.04);
        transition: var(--transition);
    }
    .sidebar-list a:last-child { border-bottom: none; }
    .sidebar-list a:hover { color: var(--secondary); padding-left: 6px; }
    .sidebar-list a .num {
        flex-shrink: 0;
        width: 24px; height: 24px;
        background: rgba(255,45,85,0.1);
        border-radius: 6px;
        display: flex; align-items: center; justify-content: center;
        font-size: 12px; font-weight: 700;
        color: var(--primary-light);
    }
    .sidebar-list a .text { flex: 1; }
    .sidebar-list a .date { 
        font-size: 12px; 
        color: var(--text-muted); 
        flex-shrink: 0; 
        margin-left: auto;
        padding-left: 8px;
    }
    .sidebar-cta {
        background: linear-gradient(135deg, rgba(255,45,85,0.12), rgba(0,212,255,0.08));
        border: 1px solid rgba(255,45,85,0.2);
        text-align: center;
        padding: 28px 20px;
    }
    .sidebar-cta h3 { justify-content: center; }
    .sidebar-cta p { 
        font-size: 14px; 
        color: var(--text-muted); 
        margin-bottom: 18px; 
        line-height: 1.6; 
    }
    .sidebar-cta .btn {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: linear-gradient(135deg, var(--primary), var(--primary-dark));
        color: #fff;
        padding: 12px 30px;
        border-radius: 30px;
        font-weight: 600;
        font-size: 15px;
        transition: var(--transition);
        box-shadow: 0 4px 20px rgba(255,45,85,0.25);
    }
    .sidebar-cta .btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 32px rgba(255,45,85,0.35);
    }

    /* ===== 相关文章 ===== */
    .related-section {
        padding: 60px 0;
        background: var(--bg-section-alt);
        border-top: 1px solid var(--border-color);
    }
    .related-section .section-title {
        font-family: var(--font-display);
        font-size: 26px;
        font-weight: 700;
        margin-bottom: 32px;
        display: flex;
        align-items: center;
        gap: 12px;
    }
    .related-section .section-title i { color: var(--primary); }
    .related-grid {
        display: grid;
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
        gap: 24px;
    }
    .related-card {
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: var(--transition);
    }
    .related-card:hover {
        transform: translateY(-4px);
        border-color: rgba(0,212,255,0.2);
        box-shadow: 0 12px 40px rgba(0,0,0,0.4);
    }
    .related-card .thumb {
        width: 100%;
        height: 170px;
        object-fit: cover;
        border-radius: 0;
    }
    .related-card .info {
        padding: 18px 20px 22px;
    }
    .related-card .info h4 {
        font-size: 16px;
        font-weight: 600;
        margin-bottom: 8px;
        line-height: 1.4;
    }
    .related-card .info h4 a { color: var(--text-primary); }
    .related-card .info h4 a:hover { color: var(--secondary); }
    .related-card .info p {
        font-size: 13px;
        color: var(--text-muted);
        line-height: 1.5;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
    .related-card .info .meta {
        display: flex;
        align-items: center;
        justify-content: space-between;
        margin-top: 12px;
        font-size: 12px;
        color: var(--text-muted);
    }
    .related-card .info .meta .cat {
        background: rgba(0,212,255,0.1);
        color: var(--secondary);
        padding: 2px 12px;
        border-radius: 20px;
        font-size: 11px;
        font-weight: 500;
    }

    /* ===== 内容未找到 ===== */
    .not-found-box {
        text-align: center;
        padding: 80px 20px;
        background: var(--bg-card);
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
    }
    .not-found-box i {
        font-size: 56px;
        color: var(--text-muted);
        opacity: 0.3;
        margin-bottom: 20px;
    }
    .not-found-box h2 {
        font-size: 28px;
        color: var(--text-primary);
        margin-bottom: 12px;
    }
    .not-found-box p {
        color: var(--text-muted);
        font-size: 16px;
        margin-bottom: 28px;
    }
    .not-found-box .btn-back {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        background: var(--primary);
        color: #fff;
        padding: 12px 32px;
        border-radius: 30px;
        font-weight: 600;
        transition: var(--transition);
    }
    .not-found-box .btn-back:hover {
        background: var(--primary-dark);
        transform: translateY(-2px);
        box-shadow: 0 6px 24px rgba(255,45,85,0.3);
    }

    /* ===== 页脚 (与首页一致) ===== */
    .site-footer {
        background: var(--bg-darker);
        border-top: 1px solid var(--border-color);
        padding: 56px 0 0;
        color: var(--text-secondary);
    }
    .footer-grid {
        display: grid;
        grid-template-columns: 1.6fr 1fr 1fr 1fr;
        gap: 40px;
        margin-bottom: 40px;
    }
    .footer-brand .site-logo { margin-bottom: 14px; font-size: 20px; }
    .footer-brand p { font-size: 14px; line-height: 1.7; color: var(--text-muted); max-width: 360px; }
    .footer-col h4 {
        font-size: 15px;
        font-weight: 700;
        color: var(--text-primary);
        margin-bottom: 16px;
        letter-spacing: 0.5px;
    }
    .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
    .footer-col ul a {
        font-size: 14px;
        color: var(--text-muted);
        display: inline-flex;
        align-items: center;
        gap: 7px;
        transition: var(--transition);
    }
    .footer-col ul a i { font-size: 10px; color: var(--primary); }
    .footer-col ul a:hover { color: var(--secondary); padding-left: 4px; }
    .footer-bottom {
        border-top: 1px solid var(--border-color);
        padding: 22px 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        font-size: 13px;
        color: var(--text-muted);
    }
    .footer-bottom a { color: var(--text-muted); }
    .footer-bottom a:hover { color: var(--secondary); }

    /* ===== 响应式 ===== */
    @media (max-width: 1024px) {
        .article-layout { grid-template-columns: 1fr; }
        .article-sidebar { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
        .footer-grid { grid-template-columns: 1fr 1fr; }
        .footer-brand p { max-width: 100%; }
    }
    @media (max-width: 768px) {
        .article-banner { min-height: 280px; padding: 40px 0 30px; }
        .article-banner h1 { font-size: 24px; }
        .article-meta-bar { gap: 12px 20px; font-size: 13px; }
        .article-content { font-size: 16px; }
        .article-content h2 { font-size: 21px; }
        .article-content h3 { font-size: 18px; }
        .article-sidebar { grid-template-columns: 1fr; }
        .related-grid { grid-template-columns: 1fr 1fr; }
        .footer-grid { grid-template-columns: 1fr; gap: 28px; }
        .footer-bottom { flex-direction: column; text-align: center; }
        .sidebar-list a .date { display: none; }
    }
    @media (max-width: 520px) {
        .container { padding: 0 16px; }
        .article-banner h1 { font-size: 20px; }
        .article-meta-bar { flex-direction: column; align-items: flex-start; gap: 8px; }
        .related-grid { grid-template-columns: 1fr; }
        .related-card .thumb { height: 200px; }
        .article-content { font-size: 15px; }
        .article-content h2 { font-size: 18px; }
        .article-content h3 { font-size: 16px; }
        .nav-main a { font-size: 14px; padding: 10px 14px; }
        .site-logo { font-size: 18px; }
        .site-logo .logo-icon { width: 32px; height: 32px; font-size: 14px; }
        .sidebar-cta { padding: 20px 16px; }
        .not-found-box { padding: 50px 16px; }
        .not-found-box i { font-size: 40px; }
        .not-found-box h2 { font-size: 22px; }
    }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #ff2d85;
            --primary-dark: #cc2068;
            --primary-light: #ff6ba8;
            --accent: #7c3aed;
            --accent-dark: #5b21b6;
            --accent-light: #a78bfa;
            --bg-dark: #0b0e1a;
            --bg-card: #131829;
            --bg-card-hover: #1a2140;
            --bg-section-alt: #0f1322;
            --text-light: #f1f5f9;
            --text-muted: #94a3b8;
            --text-dim: #64748b;
            --border-color: rgba(124, 58, 237, 0.25);
            --border-glow: rgba(255, 45, 133, 0.4);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(124, 58, 237, 0.12);
            --shadow-glow: 0 0 40px rgba(255, 45, 133, 0.15);
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            --container-max: 1200px;
            --header-height: 70px;
        }

        /* ===== 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-sans);
            background: var(--bg-dark);
            color: var(--text-light);
            line-height: 1.7;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--text-light);
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ===== 背景纹理 ===== */
        .bg-grid {
            background-image:
                linear-gradient(rgba(124, 58, 237, 0.04) 1px, transparent 1px),
                linear-gradient(90deg, rgba(124, 58, 237, 0.04) 1px, transparent 1px);
            background-size: 48px 48px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: rgba(11, 14, 26, 0.92);
            backdrop-filter: blur(18px) saturate(1.1);
            border-bottom: 1px solid var(--border-color);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
            transition: var(--transition);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.4rem;
            letter-spacing: -0.5px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }
        .site-logo .logo-icon {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 0 20px rgba(255, 45, 133, 0.3);
        }
        .site-logo .logo-text {
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .site-logo:hover {
            opacity: 0.9;
            transform: scale(1.02);
        }

        /* 导航 */
        .nav-main {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-main a {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-main a i {
            font-size: 1rem;
        }
        .nav-main a:hover {
            color: var(--text-light);
            background: rgba(124, 58, 237, 0.12);
        }
        .nav-main a.active {
            color: var(--text-light);
            background: rgba(255, 45, 133, 0.15);
            box-shadow: inset 0 0 0 1px rgba(255, 45, 133, 0.25), 0 0 20px rgba(255, 45, 133, 0.08);
        }
        .nav-main a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 20%;
            right: 20%;
            height: 3px;
            background: var(--primary);
            border-radius: 3px 3px 0 0;
            box-shadow: 0 0 12px var(--primary);
        }
        .nav-main a.active i {
            color: var(--primary-light);
        }

        /* 汉堡菜单 */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-color);
        }
        .menu-toggle span {
            display: block;
            width: 28px;
            height: 2.5px;
            background: var(--text-light);
            border-radius: 4px;
            transition: var(--transition);
        }
        .menu-toggle.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .menu-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-main {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                flex-direction: column;
                background: rgba(11, 14, 26, 0.98);
                backdrop-filter: blur(20px);
                padding: 16px 24px 24px;
                gap: 4px;
                border-bottom: 1px solid var(--border-color);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
            }
            .nav-main.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: all;
            }
            .nav-main a {
                width: 100%;
                padding: 12px 16px;
                font-size: 1.05rem;
                border-radius: var(--radius-sm);
            }
            .nav-main a.active::after {
                display: none;
            }
            .nav-main a.active {
                background: rgba(255, 45, 133, 0.18);
                border-left: 3px solid var(--primary);
            }
        }
        @media (min-width: 769px) {
            .nav-main {
                display: flex !important;
                opacity: 1 !important;
                pointer-events: all !important;
                transform: none !important;
            }
        }

        /* ===== Banner 内页 ===== */
        .page-banner {
            padding: 120px 0 60px;
            position: relative;
            overflow: hidden;
            background: linear-gradient(160deg, #0b0e1a 0%, #1a1040 50%, #0b0e1a 100%);
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
        }
        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
            text-align: center;
        }
        .page-banner h1 {
            font-size: 3rem;
            font-weight: 900;
            letter-spacing: -1px;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #f1f5f9 0%, var(--primary-light) 50%, var(--accent-light) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .page-banner p {
            font-size: 1.15rem;
            color: var(--text-muted);
            max-width: 680px;
            margin: 0 auto;
            line-height: 1.8;
        }
        .page-banner .banner-tags {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .page-banner .banner-tags span {
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(124, 58, 237, 0.15);
            border: 1px solid rgba(124, 58, 237, 0.2);
            font-size: 0.85rem;
            color: var(--accent-light);
            font-weight: 500;
        }
        @media (max-width: 768px) {
            .page-banner {
                padding: 100px 0 40px;
            }
            .page-banner h1 {
                font-size: 2rem;
            }
            .page-banner p {
                font-size: 1rem;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 80px 0;
        }
        .section-alt {
            background: var(--bg-section-alt);
        }
        .section-title {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, var(--text-light), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 640px;
            line-height: 1.7;
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-header .section-sub {
            margin: 0 auto;
        }
        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .section-header {
                margin-bottom: 32px;
            }
        }

        /* ===== 分类入口卡片（游戏列表） ===== */
        .game-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
            gap: 20px;
        }
        .game-card {
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 28px 16px 20px;
            text-align: center;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }
        .game-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .game-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255, 45, 133, 0.3);
            transform: translateY(-6px);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .game-card:hover::before {
            opacity: 1;
        }
        .game-card .game-icon {
            font-size: 2.6rem;
            margin-bottom: 12px;
            display: block;
        }
        .game-card .game-name {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-light);
        }
        .game-card .game-count {
            font-size: 0.82rem;
            color: var(--text-dim);
            margin-top: 4px;
        }
        @media (max-width: 520px) {
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .game-card {
                padding: 20px 12px 16px;
            }
            .game-card .game-icon {
                font-size: 2rem;
            }
        }

        /* ===== 攻略卡片网格 ===== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 28px;
        }
        .guide-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .guide-card:hover {
            border-color: rgba(255, 45, 133, 0.3);
            transform: translateY(-8px);
            box-shadow: var(--shadow-card), var(--shadow-glow);
        }
        .guide-card .guide-thumb {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-card-hover);
        }
        .guide-card .guide-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        .guide-card:hover .guide-thumb img {
            transform: scale(1.06);
        }
        .guide-card .guide-thumb .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 4px 16px rgba(255, 45, 133, 0.3);
            z-index: 2;
        }
        .guide-card .guide-thumb .play-btn {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%) scale(0.8);
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(255, 45, 133, 0.85);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            opacity: 0;
            transition: var(--transition);
            box-shadow: 0 0 40px rgba(255, 45, 133, 0.3);
            z-index: 2;
            backdrop-filter: blur(4px);
            border: 2px solid rgba(255, 255, 255, 0.2);
        }
        .guide-card:hover .guide-thumb .play-btn {
            opacity: 1;
            transform: translate(-50%, -50%) scale(1);
        }
        .guide-card .guide-body {
            padding: 24px 24px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .guide-card .guide-game-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(124, 58, 237, 0.15);
            color: var(--accent-light);
            border: 1px solid rgba(124, 58, 237, 0.2);
            margin-bottom: 10px;
            align-self: flex-start;
        }
        .guide-card .guide-title {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-light);
            line-height: 1.4;
        }
        .guide-card .guide-excerpt {
            color: var(--text-muted);
            font-size: 0.92rem;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 16px;
        }
        .guide-card .guide-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }
        .guide-card .guide-meta .author {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .guide-card .guide-meta .author i {
            color: var(--primary-light);
        }
        .guide-card .guide-meta .views {
            font-size: 0.85rem;
            color: var(--text-dim);
        }
        .guide-card .guide-meta .views i {
            margin-right: 4px;
            color: var(--accent-light);
        }
        @media (max-width: 768px) {
            .guide-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .guide-card .guide-body {
                padding: 18px 18px 16px;
            }
            .guide-card .guide-title {
                font-size: 1.05rem;
            }
        }

        /* ===== 热门排行 ===== */
        .rank-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            padding: 16px 20px;
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .rank-item:hover {
            background: var(--bg-card-hover);
            border-color: rgba(255, 45, 133, 0.2);
            transform: translateX(4px);
        }
        .rank-item .rank-num {
            font-size: 1.6rem;
            font-weight: 900;
            color: var(--text-dim);
            min-width: 36px;
            text-align: center;
            line-height: 1;
        }
        .rank-item:nth-child(1) .rank-num {
            color: var(--primary);
        }
        .rank-item:nth-child(2) .rank-num {
            color: var(--accent-light);
        }
        .rank-item:nth-child(3) .rank-num {
            color: #f59e0b;
        }
        .rank-item .rank-info {
            flex: 1;
        }
        .rank-item .rank-info .rank-title {
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-light);
            margin-bottom: 2px;
        }
        .rank-item .rank-info .rank-desc {
            font-size: 0.82rem;
            color: var(--text-dim);
        }
        .rank-item .rank-hot {
            font-size: 0.8rem;
            color: var(--primary-light);
            font-weight: 600;
            white-space: nowrap;
        }
        @media (max-width: 768px) {
            .rank-list {
                grid-template-columns: 1fr;
            }
        }

        /* ===== CTA 区块 ===== */
        .cta-block {
            background: linear-gradient(145deg, rgba(124, 58, 237, 0.12), rgba(255, 45, 133, 0.08));
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        .cta-block::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-block h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .cta-block p {
            color: var(--text-muted);
            font-size: 1.05rem;
            max-width: 540px;
            margin: 0 auto 28px;
            position: relative;
            z-index: 1;
        }
        .cta-block .btn-group {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
            border: none;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            box-shadow: 0 4px 24px rgba(255, 45, 133, 0.3);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 40px rgba(255, 45, 133, 0.4);
            opacity: 0.95;
        }
        .btn-outline {
            border: 2px solid var(--border-color);
            color: var(--text-light);
            background: transparent;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(255, 45, 133, 0.08);
            transform: translateY(-3px);
        }
        @media (max-width: 768px) {
            .cta-block {
                padding: 36px 20px;
            }
            .cta-block h2 {
                font-size: 1.5rem;
            }
            .btn {
                padding: 12px 24px;
                font-size: 0.92rem;
            }
        }

        /* ===== FAQ ===== */
        .faq-grid {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(255, 45, 133, 0.2);
        }
        .faq-item .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-light);
            transition: var(--transition);
            user-select: none;
        }
        .faq-item .faq-q i {
            color: var(--primary-light);
            transition: var(--transition);
            font-size: 1.1rem;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
        }
        .faq-item .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.8;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        @media (max-width: 768px) {
            .faq-item .faq-q {
                padding: 14px 16px;
                font-size: 0.95rem;
            }
            .faq-item .faq-a {
                padding: 0 16px;
            }
            .faq-item.open .faq-a {
                padding: 0 16px 16px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #080b16;
            border-top: 1px solid var(--border-color);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .site-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            color: var(--text-dim);
            font-size: 0.9rem;
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-light);
            letter-spacing: 0.5px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: var(--text-dim);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        .footer-col ul li a i {
            font-size: 0.7rem;
            color: var(--primary-light);
        }
        .footer-col ul li a:hover {
            color: var(--text-light);
            transform: translateX(4px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.85rem;
            color: var(--text-dim);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: var(--accent-light);
        }
        .footer-bottom a:hover {
            color: var(--primary-light);
        }
        @media (max-width: 900px) {
            .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: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== 辅助 ===== */
        .text-gradient {
            background: linear-gradient(135deg, var(--primary-light), var(--accent-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gap-8 {
            gap: 8px;
        }
        .mt-16 {
            margin-top: 16px;
        }
        .mt-24 {
            margin-top: 24px;
        }
        .mt-32 {
            margin-top: 32px;
        }
        .mb-24 {
            margin-bottom: 24px;
        }
        .text-center {
            text-align: center;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* ===== 分页装饰 ===== */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .pagination a,
        .pagination span {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 0.95rem;
            border: 1px solid var(--border-color);
            color: var(--text-muted);
            transition: var(--transition);
            background: var(--bg-card);
        }
        .pagination a:hover {
            background: var(--bg-card-hover);
            border-color: var(--primary);
            color: var(--text-light);
        }
        .pagination .current {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-color: transparent;
            color: #fff;
            box-shadow: 0 0 20px rgba(255, 45, 133, 0.2);
        }
        .pagination .dots {
            border: none;
            background: none;
            color: var(--text-dim);
        }
        @media (max-width: 520px) {
            .pagination a,
            .pagination span {
                width: 38px;
                height: 38px;
                font-size: 0.85rem;
            }
        }

        /* ===== 标签云 ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            margin-top: 16px;
        }
        .tag-cloud a {
            padding: 6px 18px;
            border-radius: 50px;
            background: rgba(124, 58, 237, 0.1);
            border: 1px solid rgba(124, 58, 237, 0.15);
            font-size: 0.85rem;
            color: var(--text-muted);
            transition: var(--transition);
        }
        .tag-cloud a:hover {
            background: rgba(255, 45, 133, 0.15);
            border-color: var(--primary);
            color: var(--text-light);
            transform: translateY(-2px);
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--bg-dark);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--text-dim);
            border-radius: 8px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--text-muted);
        }

        /* ===== 选中高亮 ===== */
        ::selection {
            background: rgba(255, 45, 133, 0.3);
            color: #fff;
        }