/* roulang page: index */
:root{--bg-primary:#0A0C10;--bg-secondary:#12151C;--bg-elevated:#1A1E26;--line-subtle:rgba(255,255,255,0.08);--text-primary:#F2F4F7;--text-secondary:#A8B0BC;--text-muted:#626D7A;--accent-thunder:#00E5CC;--accent-blaze:#FF5C38;--radius-md:10px;--radius-lg:16px;--shadow-card:0 2px 12px rgba(0,0,0,0.25);--shadow-hover:0 8px 24px rgba(0,0,0,0.4);--transition-fast:0.2s ease;--transition-slow:0.45s cubic-bezier(0.22,1,0.36,1);--font-title:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;--font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;--font-mono:"Inter","Roboto Mono",monospace}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{background:var(--bg-primary);color:var(--text-primary);font-family:var(--font-body);font-size:15px;line-height:1.8;font-weight:400;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
a:hover{color:var(--accent-thunder)}
img{max-width:100%;height:auto;display:block}
button,input,select,textarea{font-family:inherit;font-size:1rem}
ul,ol{list-style:none}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto}
[class*="grid-x"]{margin-left:auto;margin-right:auto}
.section-pad{padding:100px 0}
@media (max-width:768px){.grid-container{padding-left:16px;padding-right:16px}.section-pad{padding:60px 0}}
h1,h2,h3,h4{font-family:var(--font-title);font-weight:800;line-height:1.2;letter-spacing:-0.01em;color:var(--text-primary)}
h1{font-size:48px;font-weight:900}
h2{font-size:34px;font-weight:800}
h3{font-size:20px;font-weight:700}
h4{font-size:14px;font-weight:600;letter-spacing:0.04em;text-transform:uppercase}
@media (max-width:768px){h1{font-size:32px}h2{font-size:26px}h3{font-size:17px}}
p{color:var(--text-secondary)}
.section-head{max-width:720px;margin-bottom:56px}
.section-head h2{margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text-muted)}
@media (max-width:768px){.section-head{margin-bottom:36px}.section-head p{font-size:14px}}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;border-radius:var(--radius-md);padding:14px 28px;cursor:pointer;border:1px solid transparent;transition:all var(--transition-fast);text-decoration:none;min-height:44px}
.btn i{font-size:14px}
.btn-primary{background:var(--accent-blaze);color:#0A0C10;font-weight:700}
.btn-primary:hover{background:#FF6A48;color:#0A0C10;transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-primary:focus-visible{outline:3px solid rgba(255,92,56,0.3);outline-offset:2px}
.btn-ghost{background:transparent;color:var(--text-primary);border-color:rgba(255,255,255,0.32)}
.btn-ghost:hover{border-color:var(--accent-thunder);color:var(--accent-thunder);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-ghost:focus-visible{outline:3px solid rgba(0,229,204,0.25);outline-offset:2px}
.btn-text{background:none;border:none;color:var(--text-secondary);font-weight:500;padding:8px 4px;border-radius:4px;min-height:auto}
.btn-text:hover{color:var(--accent-thunder);text-decoration:underline;transform:none}
.btn-lg{padding:18px 40px;font-size:16px}
.btn-sm{padding:10px 22px;font-size:13.5px;min-height:36px;border-radius:8px}
.btn-block{display:flex;width:100%}
@media (max-width:520px){.btn-lg{padding:14px 28px;font-size:15px}.btn{padding:12px 20px}}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;line-height:1;padding:6px 14px;border-radius:999px;letter-spacing:0.02em}
.badge-thunder{background:rgba(0,229,204,0.08);color:var(--accent-thunder);border:1px solid rgba(0,229,204,0.3)}
.badge-blaze{background:rgba(255,92,56,0.08);color:var(--accent-blaze);border:1px solid rgba(255,92,56,0.3)}
.site-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,12,16,0.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid var(--line-subtle);transition:background var(--transition-fast),border-color var(--transition-fast)}
.site-header.header-scrolled{background:rgba(10,12,16,0.96);border-bottom-color:rgba(255,255,255,0.1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:20px}
.header-left{flex-shrink:0}
.logo{font-family:var(--font-title);font-size:19px;font-weight:900;letter-spacing:-0.01em;color:var(--text-primary);white-space:nowrap}
.logo span{color:var(--accent-thunder)}
.logo:hover{color:var(--text-primary)}
.header-nav{display:flex;align-items:center;gap:32px;margin-left:24px}
.header-nav a{position:relative;font-size:14.5px;font-weight:500;color:var(--text-secondary);padding:10px 2px;border-bottom:2px solid transparent;transition:color var(--transition-fast),border-color var(--transition-fast)}
.header-nav a::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent-thunder);border-radius:2px;transform:scaleX(0);transition:transform var(--transition-slow)}
.header-nav a:hover{color:var(--text-primary)}
.header-nav a.active{color:var(--accent-thunder)}
.header-nav a.active::after{transform:scaleX(1)}
.header-right{display:flex;align-items:center;gap:14px;margin-left:auto}
.search-box{display:flex;align-items:center;background:var(--bg-elevated);border:1px solid var(--line-subtle);border-radius:8px;padding:0 12px;width:220px;height:38px;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}
.search-box.focused,.search-box:focus-within{border-color:var(--accent-thunder);box-shadow:0 0 0 3px rgba(0,229,204,0.15)}
.search-box i{color:var(--text-muted);font-size:13px;margin-right:8px}
.search-box input{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-size:13.5px}
.search-box input::placeholder{color:var(--text-muted)}
.search-kbd{font-family:var(--font-mono);font-size:11px;color:var(--text-muted);background:rgba(255,255,255,0.06);border-radius:4px;padding:2px 6px;border:1px solid var(--line-subtle);white-space:nowrap}
.quick-actions{display:flex;align-items:center;gap:4px}
.quick-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;color:var(--text-secondary);font-size:14px;transition:background var(--transition-fast),color var(--transition-fast)}
.quick-btn:hover{background:var(--bg-elevated);color:var(--accent-thunder)}
.header-cta{white-space:nowrap}
.menu-toggle{display:none;background:none;border:1px solid var(--line-subtle);border-radius:8px;width:38px;height:38px;color:var(--text-secondary);font-size:16px;cursor:pointer;align-items:center;justify-content:center;transition:border-color var(--transition-fast),color var(--transition-fast)}
.menu-toggle:hover{border-color:var(--accent-thunder);color:var(--accent-thunder)}
.mobile-menu{display:none;position:fixed;top:68px;left:0;right:0;z-index:999;background:var(--bg-secondary);border-bottom:1px solid var(--line-subtle);padding:20px 24px 28px;box-shadow:0 16px 32px rgba(0,0,0,0.4)}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;font-size:16px;font-weight:600;color:var(--text-primary);padding:14px 0;border-bottom:1px solid rgba(255,255,255,0.05)}
.mobile-menu a.active{color:var(--accent-thunder)}
.mobile-menu a:hover{color:var(--accent-thunder)}
.mobile-search{display:flex;align-items:center;background:var(--bg-elevated);border:1px solid var(--line-subtle);border-radius:10px;padding:0 14px;height:44px;margin:16px 0}
.mobile-search i{color:var(--text-muted);margin-right:10px}
.mobile-search input{flex:1;background:none;border:none;outline:none;color:var(--text-primary);font-size:14px}
.mobile-search input::placeholder{color:var(--text-muted)}
.mobile-menu .btn{margin-top:8px}
@media (max-width:1024px){.header-nav{gap:20px;margin-left:12px}.search-box{width:180px}}
@media (max-width:768px){.header-inner{height:60px}.header-nav,.quick-actions,.search-box,.header-cta{display:none}.menu-toggle{display:inline-flex}.mobile-menu{top:60px}}
.hero-section{position:relative;min-height:100vh;display:flex;align-items:center;padding:150px 0 110px;overflow:hidden;max-width:100vw}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;opacity:0.28;z-index:0}
.hero-section::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,var(--bg-primary) 0%,rgba(10,12,16,0.45) 35%,rgba(10,12,16,0.7) 75%,var(--bg-primary) 100%);z-index:1;pointer-events:none}
.hero-section .grid-container{position:relative;z-index:2}
.countdown-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;background:var(--bg-elevated);border:1px solid var(--line-subtle);border-radius:var(--radius-md);padding:14px 22px;margin-bottom:48px;flex-wrap:wrap}
.countdown-info{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.countdown-title{font-size:14px;font-weight:500;color:var(--text-secondary)}
.countdown-timer{display:flex;align-items:center;gap:6px}
.cd-num{font-family:var(--font-mono);font-size:28px;font-weight:600;color:var(--accent-blaze);line-height:1;letter-spacing:0.02em}
.cd-sep{font-family:var(--font-mono);font-size:22px;color:var(--accent-thunder);font-weight:600;line-height:1;margin:0 2px}
@media (max-width:520px){.countdown-bar{padding:12px 16px;margin-bottom:32px}.cd-num{font-size:22px}.cd-sep{font-size:18px}.countdown-title{font-size:13px}}
.hero-content{align-items:center}
.hero-text{padding-right:20px}
.hero-text .badge{margin-bottom:20px}
.hero-text h1{margin-bottom:16px;max-width:520px}
.hero-subtitle{font-size:17px;color:var(--text-secondary);margin-bottom:36px;max-width:460px;line-height:1.7}
.hero-ctas{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
@media (max-width:768px){.hero-text{padding-right:0;text-align:left}.hero-subtitle{font-size:15px;max-width:100%}.hero-ctas{gap:10px}}
.hero-card{background:var(--bg-elevated);border:1px solid var(--line-subtle);border-radius:var(--radius-lg);padding:0;box-shadow:var(--shadow-card);transition:border-color var(--transition-slow),transform var(--transition-slow),box-shadow var(--transition-slow)}
.hero-card:hover{border-color:rgba(0,229,204,0.3);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.hero-card-inner{padding:32px}
.hero-card-inner h3{font-size:18px;margin-bottom:20px;letter-spacing:0.02em}
.info-row{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--line-subtle)}
.info-row:last-of-type{border-bottom:none}
.info-label{font-size:13px;color:var(--text-muted);font-weight:500;white-space:nowrap}
.info-value{font-size:14px;color:var(--text-primary);font-weight:600;text-align:right}
.info-value .dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:6px;vertical-align:middle}
.dot-green{background:#34D399;box-shadow:0 0 6px rgba(52,211,153,0.6)}
.dot-orange{background:var(--accent-blaze);box-shadow:0 0 6px rgba(255,92,56,0.6)}
.hero-card-inner .btn{margin-top:24px}
@media (max-width:768px){.hero-card{max-width:100%;margin-top:32px}.hero-card-inner{padding:24px}}
.stats-strip{border-block:1px solid var(--line-subtle);padding:48px 0;margin-top:-1px}
.stats-strip .grid-x{row-gap:32px}
.stat-item{text-align:left}
.stat-num{font-family:var(--font-mono);font-size:38px;font-weight:700;color:var(--accent-thunder);line-height:1.1;letter-spacing:-0.02em}
.stat-label{font-size:14px;color:var(--text-muted);margin-top:8px;font-weight:500}
@media (max-width:768px){.stats-strip{padding:32px 0}.stat-num{font-size:28px}}
.features-section{background:var(--bg-secondary);position:relative}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;align-items:start}
.feature-item{background:var(--bg-elevated);border:1px solid var(--line-subtle);border-radius:var(--radius-lg);padding:36px 30px;transition:border-color var(--transition-slow),transform var(--transition-slow),box-shadow var(--transition-slow)}
.feature-item:hover{border-color:rgba(0,229,204,0.3);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-center{margin-top:-24px;border-top:2px solid var(--accent-thunder)}
.feature-left{margin-bottom:24px}
.feature-right{margin-bottom:24px;margin-top:24px}
.feature-icon{width:48px;height:48px;border-radius:var(--radius-md);background:rgba(0,229,204,0.08);border:1px solid rgba(0,229,204,0.2);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--accent-thunder);margin-bottom:20px;transition:background var(--transition-fast),transform var(--transition-fast)}
.feature-item:hover .feature-icon{background:rgba(0,229,204,0.14)}
.feature-item h3{margin-bottom:10px}
.feature-item p{font-size:14.5px;line-height:1.7;color:var(--text-secondary);margin-bottom:0}
@media (max-width:1024px){.features-grid{gap:20px}.feature-item{padding:28px 22px}}
@media (max-width:768px){.features-grid{grid-template-columns:1fr}.feature-center{margin-top:0}.feature-left,.feature-right{margin-bottom:0;margin-top:0}.feature-item{width:100%;margin-bottom:16px}}
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:260px;gap:24px}
.gallery-item{position:relative;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line-subtle);background:var(--bg-elevated);display:block;box-shadow:var(--shadow-card);transition:box-shadow var(--transition-slow),transform var(--transition-slow),border-color var(--transition-fast)}
.gallery-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px);border-color:rgba(0,229,204,0.3)}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s cubic-bezier(0.22,1,0.36,1)}
.gallery-item:hover img{transform:scale(1.04)}
.gallery-item:nth-child(1){grid-row:span 2}
.gallery-item:nth-child(4){grid-column:span 2}
.gallery-overlay{position:absolute;inset:auto 0 0 0;background:linear-gradient(180deg,transparent 0%,rgba(10,12,16,0.92) 100%);color:var(--text-primary);font-size:14px;font-weight:600;padding:44px 20px 18px;transform:translateY(12px);opacity:0;transition:opacity var(--transition-slow),transform var(--transition-slow)}
.gallery-item:hover .gallery-overlay,.gallery-item:focus-visible .gallery-overlay{opacity:1;transform:translateY(0)}
.gallery-overlay i{color:var(--accent-thunder);margin-right:8px;font-size:13px}
@media (max-width:768px){.gallery-grid{grid-template-columns:1fr;grid-auto-rows:220px}.gallery-item:nth-child(1){grid-row:auto}.gallery-item:nth-child(4){grid-column:auto}.gallery-overlay{opacity:1;transform:none}}
.cta-section{position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:-120px;right:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(255,92,56,0.12) 0%,transparent 70%);pointer-events:none;z-index:0}
.cta-panel{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:32px;background:var(--bg-elevated);border:1px solid var(--line-subtle);border-radius:var(--radius-lg);padding:52px 56px;flex-wrap:wrap}
.cta-left{flex:1;min-width:280px}
.cta-left h2{margin-bottom:10px}
.cta-left p{font-size:15px;color:var(--text-secondary);max-width:480px}
.cta-right{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
@media (max-width:768px){.cta-panel{padding:36px 24px}.cta-right{margin-top:8px}}
.accordion-item{background:var(--bg-elevated);border:1px solid var(--line-subtle);border-radius:var(--radius-lg);margin-bottom:16px;overflow:hidden;transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}
.accordion-item:hover{border-color:rgba(0,229,204,0.25)}
.accordion-item.is-active{border-color:rgba(0,229,204,0.25)}
.accordion-title{background:transparent;border:none;padding:22px 24px;font-size:16px;font-weight:700;color:var(--text-primary);font-family:var(--font-title);line-height:1.4;display:flex;align-items:center;gap:14px;margin:0}
.accordion-title:hover{background:rgba(255,255,255,0.02)}
.accordion-title::before{display:none !important}
.accordion-title::after{content:'+' !important;font-family:var(--font-mono);color:var(--accent-thunder);font-size:22px;font-weight:400;margin-left:auto;line-height:1;transition:transform var(--transition-slow)}
.accordion-item.is-active>.accordion-title::after{content:'\00d7' !important;transform:rotate(180deg)}
.accordion-content{background:transparent;border:none;padding:0 24px 24px 76px;color:var(--text-secondary);font-size:14.5px;line-height:1.7}
.faq-no{font-family:var(--font-mono);font-size:13px;font-weight:600;color:var(--accent-thunder);min-width:32px;letter-spacing:0.02em}
.news-section{background:var(--bg-secondary)}
.news-card{display:flex;flex-direction:column;background:var(--bg-elevated);border:1px solid var(--line-subtle);border-radius:var(--radius-lg);padding:28px;height:100%;transition:border-color var(--transition-slow),transform var(--transition-slow),box-shadow var(--transition-slow)}
.news-card:hover{border-color:rgba(0,229,204,0.3);transform:translateY(-4px);box-shadow:var(--shadow-hover);color:inherit}
.news-card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px}
.news-date{font-family:var(--font-mono);font-size:12.5px;color:var(--text-muted);white-space:nowrap}
.news-card h3{font-size:17px;font-weight:700;line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-excerpt{font-size:14px;color:var(--text-secondary);line-height:1.65;margin-bottom:20px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-link{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;font-weight:600;color:var(--accent-thunder);margin-top:auto}
.news-link i{transition:transform var(--transition-fast)}
.news-card:hover .news-link i{transform:translateX(4px)}
.empty-state{border:1px dashed rgba(255,255,255,0.15);border-radius:var(--radius-lg);background:var(--bg-elevated);padding:64px 24px;text-align:center}
.empty-state i{font-size:34px;color:var(--text-muted);display:block;margin-bottom:14px}
.empty-state p{color:var(--text-muted);font-size:14.5px}
.site-footer{border-top:1px solid var(--line-subtle);background:var(--bg-primary);padding-top:72px}
.footer-grid{padding-bottom:48px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.7;margin:16px 0 20px;max-width:320px}
.social-links{display:grid;grid-template-columns:repeat(4,36px);gap:8px}
.social-links a{width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,0.15);display:flex;align-items:center;justify-content:center;color:var(--text-secondary);font-size:14px;transition:border-color var(--transition-fast),color var(--transition-fast),background var(--transition-fast)}
.social-links a:hover{border-color:var(--accent-thunder);color:var(--accent-thunder);background:rgba(0,229,204,0.06)}
.site-footer h4{font-size:13px;font-weight:700;color:var(--text-secondary);letter-spacing:0.06em;margin-bottom:18px;text-transform:uppercase;font-family:var(--font-title)}
.site-footer .footer-col a{display:block;font-size:14px;color:var(--text-muted);margin-bottom:12px;transition:color var(--transition-fast),padding-left var(--transition-fast)}
.site-footer .footer-col a:hover{color:var(--accent-thunder);padding-left:4px}
.footer-contact p{font-size:14px;color:var(--text-muted);line-height:1.8;margin-bottom:0}
.footer-bottom{border-top:1px solid var(--line-subtle);padding:24px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px}
.footer-bottom span{font-size:12.5px;color:var(--text-muted)}
.back-top{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted);transition:color var(--transition-fast)}
.back-top:hover{color:var(--accent-thunder)}
.back-top i{font-size:12px}
@media (max-width:768px){.site-footer{padding-top:48px}.footer-bottom{flex-direction:column;align-items:flex-start;padding:20px 0}}
a:focus-visible,button:focus-visible{outline:3px solid rgba(0,229,204,0.35);outline-offset:2px;border-radius:4px}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}}

/* roulang page: article */
:root{
    --bg-primary:#0A0C10;
    --bg-secondary:#12151C;
    --bg-elevated:#1A1E26;
    --line-subtle:rgba(255,255,255,0.08);
    --text-primary:#F2F4F7;
    --text-secondary:#A8B0BC;
    --text-muted:#626D7A;
    --accent-thunder:#00E5CC;
    --accent-blaze:#FF5C38;
    --radius-md:10px;
    --radius-lg:16px;
    --shadow-card:0 2px 12px rgba(0,0,0,0.25);
    --shadow-hover:0 8px 24px rgba(0,0,0,0.4);
    --transition-fast:0.2s ease;
    --transition-slow:0.45s cubic-bezier(0.22,1,0.36,1);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
    background:var(--bg-primary);
    color:var(--text-primary);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
    overflow-x:hidden;
}
a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}
img{max-width:100%;display:block}
button{font-family:inherit;border:none;background:none;cursor:pointer;color:inherit}
input,textarea{font-family:inherit}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    color:var(--text-primary);
    line-height:1.25;
    letter-spacing:-0.01em;
    margin:0;
}
.grid-container{
    max-width:1200px;
    padding-left:24px;
    padding-right:24px;
}

/* ===== Buttons ===== */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
    font-weight:700;
    font-size:15px;
    border-radius:var(--radius-md);
    padding:14px 32px;
    min-height:44px;
    line-height:1;
    transition:all var(--transition-fast);
    cursor:pointer;
    text-align:center;
    white-space:nowrap;
}
.btn-primary{
    background:var(--accent-blaze);
    color:#0A0C10;
    box-shadow:none;
}
.btn-primary:hover{
    background:#FF6A48;
    color:#0A0C10;
    transform:translateY(-2px);
    box-shadow:0 6px 20px rgba(255,92,56,0.28);
}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-primary:focus{
    outline:none;
    box-shadow:0 0 0 3px rgba(255,92,56,0.3);
}
.btn-ghost{
    background:transparent;
    color:var(--text-primary);
    border:1px solid rgba(255,255,255,0.35);
}
.btn-ghost:hover{
    border-color:var(--accent-thunder);
    color:var(--accent-thunder);
    transform:translateY(-2px);
}
.btn-ghost:focus{
    outline:none;
    box-shadow:0 0 0 3px rgba(0,229,204,0.25);
}
.btn-sm{padding:10px 20px;min-height:40px;font-size:14px;border-radius:10px}
.btn-block{width:100%}

/* ===== Header ===== */
.site-header{
    position:fixed;
    top:0;left:0;right:0;
    z-index:1000;
    background:rgba(10,12,16,0.85);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    border-bottom:1px solid var(--line-subtle);
    transition:background var(--transition-fast),box-shadow var(--transition-fast);
}
.site-header.scrolled{
    background:rgba(10,12,16,0.96);
    box-shadow:0 4px 20px rgba(0,0,0,0.3);
}
.header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:72px;
}
.header-left{width:200px;flex-shrink:0}
.logo{
    font-size:20px;
    font-weight:900;
    letter-spacing:-0.01em;
    color:var(--text-primary);
    line-height:1.2;
    display:inline-block;
}
.logo span{
    color:var(--accent-thunder);
    margin-left:1px;
}
.header-nav{
    display:flex;
    align-items:center;
    gap:4px;
}
.header-nav a{
    position:relative;
    padding:10px 16px;
    color:var(--text-secondary);
    font-size:15px;
    font-weight:500;
    border-radius:8px;
    transition:color var(--transition-fast),background var(--transition-fast);
}
.header-nav a:hover{
    color:var(--text-primary);
    background:rgba(255,255,255,0.05);
}
.header-nav a.active{
    color:var(--accent-thunder);
    background:rgba(0,229,204,0.08);
}
.header-nav a.active::after{
    content:'';
    position:absolute;
    bottom:0;
    left:14px;
    right:14px;
    height:2px;
    background:var(--accent-thunder);
    border-radius:2px 2px 0 0;
}
.header-right{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
}
.search-box{
    display:flex;
    align-items:center;
    gap:8px;
    width:220px;
    height:40px;
    padding:0 12px;
    background:var(--bg-elevated);
    border:1px solid var(--line-subtle);
    border-radius:10px;
    transition:border-color var(--transition-fast),box-shadow var(--transition-fast);
}
.search-box:focus-within{
    border-color:var(--accent-thunder);
    box-shadow:0 0 0 3px rgba(0,229,204,0.15);
}
.search-box i.fa-magnifying-glass{
    color:var(--text-muted);
    font-size:14px;
    flex-shrink:0;
}
.search-box input{
    flex:1;
    min-width:0;
    background:transparent;
    border:none;
    color:var(--text-primary);
    font-size:14px;
    outline:none;
}
.search-box input::placeholder{color:var(--text-muted)}
.search-kbd{
    font-family:"Inter","Roboto Mono",monospace;
    font-size:12px;
    color:var(--text-muted);
    padding:2px 8px;
    background:rgba(255,255,255,0.04);
    border:1px solid var(--line-subtle);
    border-radius:6px;
    flex-shrink:0;
}
.quick-actions{
    display:flex;
    align-items:center;
    gap:4px;
}
.quick-btn{
    width:40px;
    height:40px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:10px;
    color:var(--text-secondary);
    font-size:15px;
    transition:background var(--transition-fast),color var(--transition-fast);
}
.quick-btn:hover{
    background:var(--bg-elevated);
    color:var(--text-primary);
}
.header-cta{
    font-size:14px;
    padding:10px 22px;
    min-height:40px;
    border-radius:10px;
}
.menu-toggle{
    display:none;
    width:40px;
    height:40px;
    align-items:center;
    justify-content:center;
    border-radius:10px;
    color:var(--text-secondary);
    font-size:18px;
    transition:background var(--transition-fast),color var(--transition-fast);
}
.menu-toggle:hover{
    background:var(--bg-elevated);
    color:var(--text-primary);
}

/* ===== Mobile Menu ===== */
.mobile-menu{
    position:fixed;
    top:72px;
    left:0;
    right:0;
    bottom:0;
    background:var(--bg-primary);
    z-index:990;
    padding:28px 24px;
    transform:translateX(105%);
    transition:transform var(--transition-slow);
    overflow-y:auto;
    border-top:1px solid var(--line-subtle);
}
.mobile-menu.open{
    transform:translateX(0);
}
.mobile-search{
    display:flex;
    align-items:center;
    gap:10px;
    background:var(--bg-elevated);
    border:1px solid var(--line-subtle);
    border-radius:10px;
    padding:0 14px;
    height:48px;
    margin-bottom:24px;
}
.mobile-search i{color:var(--text-muted);font-size:14px}
.mobile-search input{
    flex:1;
    background:transparent;
    border:none;
    color:var(--text-primary);
    font-size:15px;
    outline:none;
    height:100%;
}
.mobile-search input::placeholder{color:var(--text-muted)}
.mobile-nav{
    display:flex;
    flex-direction:column;
    gap:4px;
    margin-bottom:28px;
}
.mobile-nav a{
    padding:14px 12px;
    border-radius:10px;
    color:var(--text-secondary);
    font-size:16px;
    font-weight:500;
    transition:background var(--transition-fast),color var(--transition-fast);
}
.mobile-nav a:hover{background:rgba(255,255,255,0.05)}
.mobile-nav a.active{
    color:var(--accent-thunder);
    background:rgba(0,229,204,0.08);
    font-weight:700;
}

/* ===== Breadcrumb ===== */
.breadcrumb-wrap{
    border-bottom:1px solid var(--line-subtle);
    background:var(--bg-secondary);
    padding:14px 0;
}
.breadcrumb-list{
    display:flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    color:var(--text-muted);
    flex-wrap:wrap;
}
.breadcrumb-list a{
    color:var(--text-muted);
    transition:color var(--transition-fast);
}
.breadcrumb-list a:hover{color:var(--accent-thunder)}
.breadcrumb-list .sep{color:rgba(255,255,255,0.18);font-size:12px}
.breadcrumb-list .current{
    color:var(--text-secondary);
    overflow:hidden;
    text-overflow:ellipsis;
    white-space:nowrap;
    max-width:280px;
}

/* ===== Article Main ===== */
.article-main{
    padding-top:72px;
    background:var(--bg-primary);
    min-height:70vh;
}

/* Article Head */
.article-head{
    padding:52px 0 40px;
    position:relative;
    background:
        radial-gradient(ellipse at 15% 0%,rgba(0,229,204,0.05),transparent 55%),
        radial-gradient(ellipse at 85% 0%,rgba(255,92,56,0.04),transparent 50%);
    border-bottom:1px solid var(--line-subtle);
}
.article-head-wrap{
    max-width:860px;
    margin:0 auto;
    text-align:left;
    padding:0 24px;
}
.article-badge{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13px;
    font-weight:600;
    color:var(--accent-thunder);
    background:rgba(0,229,204,0.08);
    border:1px solid rgba(0,229,204,0.3);
    padding:6px 14px;
    border-radius:999px;
    margin-bottom:20px;
}
.article-badge i{font-size:12px}
.article-title{
    font-size:clamp(28px,4vw,42px);
    font-weight:900;
    line-height:1.3;
    letter-spacing:-0.02em;
    color:var(--text-primary);
    margin-bottom:20px;
}
.article-meta{
    display:flex;
    align-items:center;
    gap:24px;
    flex-wrap:wrap;
    font-size:14px;
    color:var(--text-muted);
}
.article-meta .meta-item{
    display:inline-flex;
    align-items:center;
    gap:8px;
}
.article-meta .meta-item i{
    font-size:14px;
    color:rgba(255,255,255,0.3);
}
.article-meta .meta-sep{
    width:4px;
    height:4px;
    border-radius:50%;
    background:rgba(255,255,255,0.2);
    display:inline-block;
}

/* Article Body */
.article-body{
    padding:56px 0 60px;
}
.article-content{
    max-width:760px;
    margin:0 auto;
    padding:0 24px;
    font-size:16px;
    line-height:1.9;
    color:var(--text-primary);
}
.article-content p{
    margin:0 0 1.6em;
    font-size:16px;
    line-height:1.9;
    color:var(--text-secondary);
}
.article-content p strong{color:var(--text-primary);font-weight:600}
.article-content h2{
    font-size:26px;
    font-weight:800;
    margin:2em 0 0.8em;
    color:var(--text-primary);
    line-height:1.4;
}
.article-content h3{
    font-size:20px;
    font-weight:700;
    margin:1.8em 0 0.7em;
    padding-left:14px;
    position:relative;
    color:var(--text-primary);
    line-height:1.5;
}
.article-content h3::before{
    content:'';
    position:absolute;
    left:0;
    top:0.2em;
    bottom:0.2em;
    width:4px;
    background:var(--accent-thunder);
    border-radius:4px;
}
.article-content h4{
    font-size:17px;
    font-weight:700;
    margin:1.5em 0 0.6em;
    color:var(--text-primary);
}
.article-content ul,
.article-content ol{
    margin:1.4em 0;
    padding-left:1.4em;
    color:var(--text-secondary);
    font-size:16px;
    line-height:1.85;
}
.article-content ul{list-style:disc}
.article-content ol{list-style:decimal}
.article-content li{margin-bottom:0.6em}
.article-content li::marker{color:var(--accent-thunder)}
.article-content blockquote{
    margin:2em 0;
    padding:20px 26px;
    background:var(--bg-secondary);
    border-left:3px solid var(--accent-thunder);
    border-radius:0 var(--radius-md) var(--radius-md) 0;
    color:var(--text-secondary);
    font-size:15px;
    line-height:1.8;
}
.article-content blockquote p{margin-bottom:0;color:var(--text-secondary)}
.article-content img{
    max-width:100%;
    border-radius:8px;
    margin:2em auto;
}
.article-content figure{
    margin:2em 0;
    text-align:center;
}
.article-content figure img{margin:0 auto}
.article-content figcaption{
    font-size:13px;
    color:var(--text-muted);
    text-align:center;
    margin-top:8px;
}
.article-content pre{
    background:#151922;
    border:1px solid var(--line-subtle);
    border-radius:var(--radius-md);
    padding:22px;
    overflow:auto;
    font-family:"Inter","Roboto Mono",monospace;
    font-size:14px;
    line-height:1.7;
    color:var(--text-primary);
    margin:2em 0;
    white-space:pre-wrap;
    word-break:break-word;
}
.article-content code{
    font-family:"Inter","Roboto Mono",monospace;
    background:rgba(0,229,204,0.08);
    color:var(--accent-thunder);
    padding:2px 8px;
    border-radius:4px;
    font-size:0.9em;
}
.article-content pre code{
    background:transparent;
    color:var(--text-primary);
    padding:0;
}
.article-content table{
    width:100%;
    margin:2em 0;
    border-collapse:collapse;
    background:transparent;
}
.article-content th,
.article-content td{
    padding:13px 16px;
    border:1px solid var(--line-subtle);
    text-align:left;
    font-size:14px;
    line-height:1.6;
}
.article-content th{
    background:var(--bg-elevated);
    color:var(--text-primary);
    font-weight:700;
}
.article-content td{color:var(--text-secondary)}
.article-content a{
    color:var(--accent-thunder);
    text-decoration:underline;
    text-underline-offset:4px;
    text-decoration-color:rgba(0,229,204,0.4);
    transition:color var(--transition-fast);
}
.article-content a:hover{color:var(--accent-blaze)}

/* ===== Article Foot ===== */
.article-foot{
    border-top:1px solid var(--line-subtle);
    padding:36px 0 48px;
    background:var(--bg-secondary);
}
.article-foot-inner{
    max-width:760px;
    margin:0 auto;
    padding:0 24px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    flex-wrap:wrap;
}
.back-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    color:var(--text-secondary);
    font-size:14px;
    font-weight:500;
    padding:10px 0;
    transition:color var(--transition-fast);
}
.back-link i{font-size:13px}
.back-link:hover{color:var(--accent-thunder)}
.back-link:hover i{transform:translateX(-3px)}
.back-link i{transition:transform var(--transition-fast)}

/* ===== Related Section ===== */
.related-section{
    padding:80px 0;
    background:var(--bg-primary);
}
.section-heading{
    margin-bottom:36px;
}
.section-heading h2{
    font-size:28px;
    font-weight:800;
    color:var(--text-primary);
    margin-bottom:8px;
}
.section-heading p{
    font-size:15px;
    color:var(--text-muted);
}
.related-grid{
    row-gap:24px;
}
.related-card{
    display:flex;
    flex-direction:column;
    background:var(--bg-elevated);
    border:1px solid var(--line-subtle);
    border-radius:var(--radius-lg);
    overflow:hidden;
    min-height:330px;
    box-shadow:var(--shadow-card);
    transition:transform var(--transition-slow),box-shadow var(--transition-slow),border-color var(--transition-slow);
}
.related-card:hover{
    transform:translateY(-4px);
    border-color:rgba(0,229,204,0.35);
    box-shadow:var(--shadow-hover);
}
.related-card-img{
    position:relative;
    aspect-ratio:16/9;
    overflow:hidden;
    background:var(--bg-secondary);
}
.related-card-img img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform 0.45s cubic-bezier(0.22,1,0.36,1);
}
.related-card:hover .related-card-img img{
    transform:scale(1.04);
}
.related-badge{
    position:absolute;
    top:14px;
    right:14px;
    font-size:12px;
    font-weight:700;
    color:var(--accent-blaze);
    background:rgba(255,92,56,0.12);
    border:1px solid rgba(255,92,56,0.35);
    padding:4px 12px;
    border-radius:999px;
    backdrop-filter:blur(8px);
}
.related-card-body{
    padding:24px;
    display:flex;
    flex-direction:column;
    flex:1;
    gap:10px;
}
.card-tag{
    font-size:13px;
    font-weight:600;
    color:var(--accent-thunder);
}
.related-card-body h3{
    font-size:18px;
    font-weight:700;
    line-height:1.5;
    color:var(--text-primary);
    transition:color var(--transition-fast);
    flex-grow:1;
}
.related-card:hover .related-card-body h3{color:var(--accent-thunder)}
.related-card-body 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;
}
.card-read-more{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:14px;
    font-weight:600;
    color:var(--text-secondary);
    transition:color var(--transition-fast);
    margin-top:4px;
}
.card-read-more i{
    font-size:13px;
    transition:transform var(--transition-fast);
}
.related-card:hover .card-read-more{
    color:var(--accent-thunder);
}
.related-card:hover .card-read-more i{
    transform:translateX(4px);
}

/* ===== Empty State ===== */
.article-empty{
    max-width:760px;
    margin:0 auto;
    padding:90px 24px;
    text-align:center;
}
.article-empty-icon{
    width:72px;
    height:72px;
    border-radius:50%;
    background:var(--bg-elevated);
    border:1px solid var(--line-subtle);
    display:flex;
    align-items:center;
    justify-content:center;
    margin:0 auto 24px;
    font-size:24px;
    color:var(--text-muted);
}
.article-empty h2{
    font-size:24px;
    font-weight:800;
    margin-bottom:12px;
    color:var(--text-primary);
}
.article-empty p{
    font-size:15px;
    color:var(--text-muted);
    margin-bottom:30px;
}

/* ===== Footer ===== */
.site-footer{
    background:var(--bg-secondary);
    border-top:1px solid var(--line-subtle);
    padding:64px 0 0;
}
.footer-grid{
    margin-bottom:48px;
    row-gap:36px;
}
.footer-brand .logo{
    font-size:22px;
    margin-bottom:16px;
    display:inline-block;
}
.footer-brand p{
    font-size:14px;
    color:var(--text-secondary);
    line-height:1.8;
    max-width:260px;
    margin-bottom:20px;
}
.social-links{
    display:flex;
    gap:10px;
}
.social-links a{
    width:40px;
    height:40px;
    border-radius:50%;
    border:1px solid var(--line-subtle);
    display:flex;
    align-items:center;
    justify-content:center;
    color:var(--text-secondary);
    font-size:15px;
    transition:all var(--transition-fast);
}
.social-links a:hover{
    color:var(--accent-thunder);
    border-color:var(--accent-thunder);
    background:rgba(0,229,204,0.06);
    transform:translateY(-2px);
}
.footer-col h4{
    font-size:14px;
    font-weight:700;
    color:var(--text-primary);
    letter-spacing:0.08em;
    margin-bottom:18px;
}
.footer-col a{
    display:block;
    font-size:14px;
    color:var(--text-secondary);
    padding:7px 0;
    transition:color var(--transition-fast);
}
.footer-col a:hover{color:var(--accent-thunder)}
.footer-contact p{
    font-size:14px;
    color:var(--text-secondary);
    padding:6px 0;
    line-height:1.8;
}
.footer-bottom{
    border-top:1px solid var(--line-subtle);
    padding:22px 0;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:12px;
    flex-wrap:wrap;
}
.footer-bottom span{
    font-size:13px;
    color:var(--text-muted);
}
.back-top{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-size:13px;
    color:var(--text-muted);
    transition:color var(--transition-fast);
}
.back-top:hover{color:var(--accent-thunder)}

/* ===== Responsive ===== */
@media screen and (max-width:1024px){
    .header-left{width:170px}
    .search-box{width:170px}
    .header-nav a{padding:10px 12px}
}
@media screen and (max-width:820px){
    .grid-container{
        padding-left:20px;
        padding-right:20px;
    }
    .header-nav{display:none}
    .search-box{display:none}
    .quick-actions{display:none}
    .menu-toggle{display:flex}
    .header-left{width:auto}
    .header-cta{
        padding:10px 16px;
        font-size:13px;
        margin-right:2px;
    }
    .related-grid .cell{
        margin-bottom:4px;
    }
    .related-card{min-height:0}
    .footer-bottom{
        flex-direction:column;
        align-items:flex-start;
    }
}
@media screen and (max-width:640px){
    .grid-container{
        padding-left:16px;
        padding-right:16px;
    }
    .header-inner{height:64px}
    .mobile-menu{top:64px}
    .logo{font-size:18px}
    .article-head{
        padding:36px 0 28px;
    }
    .article-title{
        font-size:26px;
        line-height:1.35;
    }
    .article-meta{
        gap:12px;
        font-size:13px;
    }
    .article-body{
        padding:40px 0;
    }
    .article-content{
        padding:0 20px;
        font-size:15px;
        line-height:1.85;
    }
    .article-content p{
        font-size:15px;
        line-height:1.85;
    }
    .article-content h2{
        font-size:22px;
    }
    .article-content h3{
        font-size:18px;
    }
    .article-content blockquote{
        padding:16px 20px;
    }
    .article-foot{
        padding:28px 0 36px;
    }
    .related-section{
        padding:56px 0;
    }
    .section-heading h2{
        font-size:24px;
    }
    .related-card-body{
        padding:20px;
    }
    .site-footer{
        padding-top:48px;
    }
    .footer-grid{
        margin-bottom:32px;
    }
    .footer-col{
        margin-bottom:8px;
    }
    .footer-bottom{
        padding:18px 0;
    }
}
@media screen and (max-width:360px){
    .header-cta{
        display:none;
    }
    .breadcrumb-list .current{
        max-width:180px;
    }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion:reduce){
    *,*::before,*::after{
        animation-duration:0.01ms!important;
        transition-duration:0.01ms!important;
        scroll-behavior:auto!important;
    }
}

/* roulang page: category1 */
:root {
            --bg-primary: #0A0C10;
            --bg-secondary: #12151C;
            --bg-elevated: #1A1E26;
            --line-subtle: rgba(255, 255, 255, 0.08);
            --text-primary: #F2F4F7;
            --text-secondary: #A8B0BC;
            --text-muted: #626D7A;
            --accent-thunder: #00E5CC;
            --accent-blaze: #FF5C38;
            --radius-md: 10px;
            --radius-lg: 16px;
            --shadow-card: 0 2px 12px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.4);
            --transition-fast: 0.2s ease;
            --transition-slow: 0.45s cubic-bezier(0.22, 1, 0.36, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-primary);
            color: var(--text-primary);
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            font-weight: 400;
            line-height: 1.7;
            margin: 0;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--accent-thunder);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin: 0;
            color: var(--text-primary);
        }

        p {
            margin: 0;
        }

        button,
        input {
            font-family: inherit;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 639px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 12, 16, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--line-subtle);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }

        .header-left {
            flex-shrink: 0;
            width: 200px;
        }

        .logo {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            line-height: 1.2;
            display: inline-flex;
            align-items: center;
            white-space: nowrap;
        }

        .logo span {
            color: var(--accent-thunder);
        }

        .header-nav {
            display: flex;
            gap: 32px;
            margin: 0;
        }

        .header-nav a {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 28px 0 24px;
            position: relative;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .header-nav a:hover {
            color: var(--accent-thunder);
        }

        .header-nav a.active {
            color: var(--accent-thunder);
        }

        .header-nav a.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 2px;
            background: var(--accent-thunder);
            border-radius: 2px 2px 0 0;
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .search-box {
            position: relative;
            width: 220px;
            margin: 0;
        }

        .search-box i {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }

        .search-box input {
            width: 100%;
            background: var(--bg-elevated);
            border: 1px solid var(--line-subtle);
            border-radius: 8px;
            padding: 9px 44px 9px 34px;
            color: var(--text-primary);
            font-size: 14px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            margin: 0;
            height: auto;
        }

        .search-box input::placeholder {
            color: var(--text-muted);
        }

        .search-box input:focus {
            outline: none;
            border-color: var(--accent-thunder);
            box-shadow: 0 0 0 3px rgba(0, 229, 204, 0.15);
        }

        .search-kbd {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 11px;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.06);
            border-radius: 4px;
            padding: 2px 6px;
            font-family: "Inter", "Roboto Mono", monospace;
            pointer-events: none;
        }

        .quick-actions {
            display: flex;
            gap: 6px;
        }

        .quick-btn {
            width: 36px;
            height: 36px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: transparent;
            border: 1px solid transparent;
            transition: background var(--transition-fast), color var(--transition-fast);
        }

        .quick-btn:hover {
            background: var(--bg-elevated);
            color: var(--text-primary);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 15px;
            line-height: 1;
            border: 1px solid transparent;
            cursor: pointer;
            text-decoration: none;
            transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            min-height: 44px;
        }

        .btn-primary {
            background: var(--accent-blaze);
            color: #0A0C10;
        }

        .btn-primary:hover {
            background: #FF6A48;
            color: #0A0C10;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 92, 56, 0.25);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(255, 92, 56, 0.3);
        }

        .btn-ghost {
            background: transparent;
            border-color: rgba(255, 255, 255, 0.42);
            color: var(--text-primary);
        }

        .btn-ghost:hover {
            border-color: var(--accent-thunder);
            color: var(--accent-thunder);
            transform: translateY(-2px);
        }

        .btn-ghost:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 229, 204, 0.25);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            min-height: 40px;
        }

        .btn-text {
            background: none;
            border: none;
            color: var(--text-secondary);
            padding: 8px 0;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            text-decoration: none;
            border-radius: 0;
            border-bottom: 1px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }

        .btn-text:hover {
            color: var(--accent-thunder);
            border-bottom-color: var(--accent-thunder);
        }

        .header-cta {
            margin-left: 4px;
        }

        .menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--line-subtle);
            background: transparent;
            color: var(--text-primary);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .menu-toggle:hover {
            background: var(--bg-elevated);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            background: rgba(10, 12, 16, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            padding: 24px;
            z-index: 99;
            border-bottom: 1px solid var(--line-subtle);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.4);
        }

        .mobile-menu.open {
            display: block;
        }

        .mobile-menu-inner {
            display: flex;
            flex-direction: column;
            gap: 8px;
            max-width: 560px;
            margin: 0 auto;
        }

        .mobile-menu-inner a {
            color: var(--text-secondary);
            font-size: 16px;
            font-weight: 500;
            padding: 13px 0;
            text-decoration: none;
            border-bottom: 1px solid var(--line-subtle);
            transition: color var(--transition-fast);
        }

        .mobile-menu-inner a:hover,
        .mobile-menu-inner a.active {
            color: var(--accent-thunder);
        }

        .mobile-search {
            position: relative;
            margin-bottom: 12px;
        }

        .mobile-search i {
            position: absolute;
            left: 12px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-muted);
            font-size: 14px;
        }

        .mobile-search input {
            width: 100%;
            background: var(--bg-elevated);
            border: 1px solid var(--line-subtle);
            border-radius: 8px;
            padding: 13px 16px 13px 38px;
            color: var(--text-primary);
            font-size: 15px;
        }

        .mobile-search input:focus {
            outline: none;
            border-color: var(--accent-thunder);
            box-shadow: 0 0 0 3px rgba(0, 229, 204, 0.15);
        }

        .mobile-cta {
            margin-top: 12px;
            width: 100%;
        }

        .page-hero {
            position: relative;
            padding: 96px 0 80px;
            overflow: hidden;
            border-bottom: 1px solid var(--line-subtle);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            opacity: 0.14;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse at 18% 32%, rgba(255, 92, 56, 0.08), transparent 52%),
                radial-gradient(ellipse at 82% 68%, rgba(0, 229, 204, 0.06), transparent 52%);
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 16px;
            border-radius: 999px;
            background: rgba(0, 229, 204, 0.08);
            border: 1px solid rgba(0, 229, 204, 0.3);
            color: var(--accent-thunder);
            font-size: 13px;
            font-weight: 600;
        }

        .hero-badge .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent-blaze);
        }

        .hero-title {
            font-size: 48px;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin: 24px 0 16px;
        }

        .hero-title .accent {
            color: var(--accent-thunder);
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 540px;
        }

        .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 36px;
        }

        .hero-card {
            background: var(--bg-elevated);
            border: 1px solid var(--line-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
            margin-top: 8px;
        }

        .hero-card-title {
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .hero-card-title .hot-tag {
            font-size: 11px;
            font-weight: 700;
            color: var(--accent-blaze);
            background: rgba(255, 92, 56, 0.08);
            border: 1px solid rgba(255, 92, 56, 0.3);
            padding: 3px 8px;
            border-radius: 999px;
        }

        .info-row {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 12px;
            padding: 13px 0;
            border-bottom: 1px solid var(--line-subtle);
            font-size: 14px;
        }

        .info-row:last-of-type {
            border-bottom: none;
        }

        .info-label {
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .info-value {
            color: var(--text-primary);
            font-weight: 600;
            text-align: right;
        }

        .hero-card-cta {
            margin-top: 22px;
            width: 100%;
        }

        .section {
            padding: 100px 0;
        }

        .section.alt {
            background: var(--bg-secondary);
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 52px;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-tag {
            font-size: 13px;
            color: var(--accent-thunder);
            font-weight: 700;
            letter-spacing: 0.08em;
            margin-bottom: 10px;
            display: block;
        }

        .section-title {
            font-size: 36px;
            font-weight: 900;
            line-height: 1.25;
        }

        .section-desc {
            margin-top: 14px;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.75;
        }

        .split-block {
            display: flex;
            align-items: center;
            gap: 64px;
        }

        .split-content {
            flex: 1;
            min-width: 0;
        }

        .split-media {
            flex: 1;
            min-width: 0;
            position: relative;
        }

        .split-media img {
            width: 100%;
            aspect-ratio: 4 / 3;
            object-fit: cover;
            border-radius: var(--radius-lg);
            border: 1px solid var(--line-subtle);
            box-shadow: var(--shadow-card);
        }

        .split-media::after {
            content: "";
            position: absolute;
            inset: 24px -24px -24px 24px;
            border: 1px solid rgba(0, 229, 204, 0.18);
            border-radius: var(--radius-lg);
            z-index: -1;
        }

        .split-notes {
            margin-top: 24px;
            display: grid;
            gap: 14px;
        }

        .split-note {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--text-secondary);
            font-size: 15px;
        }

        .split-note i {
            color: var(--accent-thunder);
            font-size: 15px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        .process-panel {
            display: flex;
            gap: 64px;
            background: var(--bg-elevated);
            border: 1px solid var(--line-subtle);
            border-radius: var(--radius-lg);
            padding: 56px;
            box-shadow: var(--shadow-card);
            position: relative;
            overflow: hidden;
        }

        .process-panel::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 320px;
            height: 320px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.05;
            border-radius: 0 0 0 50%;
            pointer-events: none;
        }

        .process-intro {
            flex: 1;
            min-width: 0;
            position: relative;
            z-index: 1;
        }

        .process-steps {
            flex: 1.1;
            min-width: 0;
            position: relative;
            z-index: 1;
        }

        .step-item {
            display: flex;
            gap: 18px;
            padding: 20px 0;
            border-bottom: 1px solid var(--line-subtle);
            transition: transform var(--transition-fast);
        }

        .step-item:hover {
            transform: translateX(4px);
        }

        .step-item:last-child {
            border-bottom: none;
        }

        .step-num {
            font-family: "Inter", "Roboto Mono", monospace;
            font-size: 20px;
            color: var(--accent-thunder);
            font-weight: 700;
            width: 42px;
            flex-shrink: 0;
            padding-top: 2px;
        }

        .step-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-primary);
        }

        .step-text {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 5px;
            line-height: 1.65;
        }

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

        .stat-card {
            background: var(--bg-elevated);
            border: 1px solid var(--line-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 24px;
            text-align: center;
            transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .stat-card:nth-child(2) {
            transform: translateY(10px);
        }

        .stat-card:nth-child(3) {
            transform: translateY(5px);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 229, 204, 0.35);
            box-shadow: var(--shadow-hover);
        }

        .stat-card:nth-child(2):hover {
            transform: translateY(-2px);
        }

        .stat-card:nth-child(3):hover {
            transform: translateY(-2px);
        }

        .stat-num {
            font-family: "Inter", "Roboto Mono", monospace;
            font-size: 44px;
            font-weight: 800;
            color: var(--text-primary);
            line-height: 1;
        }

        .stat-num span {
            color: var(--accent-thunder);
        }

        .stat-label {
            margin-top: 10px;
            color: var(--text-muted);
            font-size: 14px;
        }

        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            grid-template-rows: 230px 230px;
            gap: 24px;
            grid-template-areas:
                "a a b b"
                "c d d d";
        }

        .gallery-item {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--line-subtle);
            background: var(--bg-elevated);
        }

        .gallery-item.ga {
            grid-area: a;
        }

        .gallery-item.gb {
            grid-area: b;
        }

        .gallery-item.gc {
            grid-area: c;
        }

        .gallery-item.gd {
            grid-area: d;
        }

        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
        }

        .gallery-item:hover img {
            transform: scale(1.03);
        }

        .gallery-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(10, 12, 16, 0.88), transparent 58%);
            display: flex;
            align-items: flex-end;
            padding: 24px;
            opacity: 0;
            transition: opacity var(--transition-fast);
        }

        .gallery-item:hover .gallery-overlay,
        .gallery-item:focus-within .gallery-overlay {
            opacity: 1;
        }

        .gallery-caption {
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
            gap: 12px;
        }

        .gallery-caption i {
            color: var(--accent-thunder);
            font-size: 18px;
        }

        .faq-layout {
            display: flex;
            gap: 72px;
            align-items: flex-start;
        }

        .faq-intro {
            flex: 1;
            max-width: 340px;
            position: sticky;
            top: 110px;
        }

        .faq-list {
            flex: 1.5;
            min-width: 0;
        }

        .faq-item {
            background: var(--bg-elevated);
            border: 1px solid var(--line-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
        }

        .faq-item.open {
            border-color: rgba(0, 229, 204, 0.3);
            box-shadow: var(--shadow-card);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 22px 26px;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 15.5px;
            font-weight: 700;
            cursor: pointer;
            text-align: left;
            transition: color var(--transition-fast);
        }

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

        .faq-num {
            font-family: "Inter", "Roboto Mono", monospace;
            color: var(--accent-thunder);
            font-size: 13px;
            font-weight: 700;
            width: 28px;
            flex-shrink: 0;
        }

        .faq-icon {
            margin-left: auto;
            font-size: 16px;
            color: var(--text-secondary);
            transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1), color var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            color: var(--accent-thunder);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.22, 1, 0.36, 1), padding 0.45s cubic-bezier(0.22, 1, 0.36, 1);
            padding: 0 26px;
            color: var(--text-secondary);
            font-size: 14.5px;
            line-height: 1.75;
        }

        .faq-item.open .faq-answer {
            max-height: 320px;
            padding-bottom: 24px;
        }

        .cta-panel {
            background: var(--bg-elevated);
            border: 1px solid var(--line-subtle);
            border-radius: var(--radius-lg);
            padding: 64px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .cta-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at center, rgba(255, 92, 56, 0.12), transparent 66%);
            pointer-events: none;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
        }

        .cta-title {
            font-size: 34px;
            font-weight: 900;
            line-height: 1.25;
        }

        .cta-desc {
            color: var(--text-secondary);
            margin-top: 16px;
            font-size: 16px;
            line-height: 1.7;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-actions {
            margin-top: 36px;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .site-footer {
            border-top: 1px solid var(--line-subtle);
            padding: 64px 0 28px;
            background: transparent;
        }

        .footer-grid {
            gap: 32px;
        }

        .footer-brand .logo {
            margin-bottom: 8px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            margin: 16px 0 20px;
            max-width: 320px;
        }

        .social-links {
            display: flex;
            gap: 12px;
        }

        .social-links a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            border: 1px solid var(--line-subtle);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            background: transparent;
            text-decoration: none;
            transition: border-color var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
        }

        .social-links a:hover {
            border-color: var(--accent-thunder);
            color: var(--accent-thunder);
            transform: translateY(-2px);
        }

        .footer-col h4 {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: 0.08em;
        }

        .footer-col a {
            display: block;
            color: var(--text-secondary);
            font-size: 14px;
            padding: 6px 0;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--accent-thunder);
        }

        .footer-contact p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.85;
            margin: 0 0 8px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding-top: 28px;
            margin-top: 48px;
            border-top: 1px solid var(--line-subtle);
            color: var(--text-muted);
            font-size: 12.5px;
        }

        .back-top {
            color: var(--text-muted);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            transition: color var(--transition-fast);
        }

        .back-top:hover {
            color: var(--accent-thunder);
        }

        @media (max-width: 1023px) {
            .header-nav {
                display: none;
            }

            .search-box {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .page-hero {
                padding: 72px 0 64px;
            }

            .hero-title {
                font-size: 38px;
            }

            .section {
                padding: 72px 0;
            }

            .section-title {
                font-size: 30px;
            }

            .split-block {
                flex-direction: column;
                gap: 40px;
            }

            .split-media {
                width: 100%;
            }

            .process-panel {
                flex-direction: column;
                gap: 40px;
                padding: 40px;
            }

            .faq-layout {
                flex-direction: column;
                gap: 40px;
            }

            .faq-intro {
                max-width: 100%;
                position: static;
            }

            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .stat-card:nth-child(2) {
                transform: translateY(6px);
            }

            .stat-card:nth-child(3) {
                transform: translateY(0);
            }

            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
                grid-template-rows: 220px 220px;
                grid-template-areas:
                    "a b"
                    "c d";
            }

            .cta-panel {
                padding: 48px 32px;
            }
        }

        @media (max-width: 639px) {
            .header-inner {
                height: 64px;
                gap: 10px;
            }

            .header-left {
                width: auto;
            }

            .logo {
                font-size: 19px;
            }

            .quick-actions {
                display: none;
            }

            .header-cta {
                font-size: 13px;
                padding: 8px 14px;
                min-height: 38px;
            }

            .mobile-menu {
                top: 64px;
            }

            .page-hero {
                padding: 56px 0 48px;
            }

            .hero-title {
                font-size: 30px;
                margin-top: 18px;
            }

            .hero-desc {
                font-size: 15.5px;
            }

            .hero-cta {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
                margin-top: 28px;
            }

            .hero-cta .btn {
                width: 100%;
            }

            .hero-card {
                margin-top: 36px;
                padding: 22px;
            }

            .section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-title {
                font-size: 26px;
            }

            .section-desc {
                font-size: 15px;
            }

            .process-panel {
                padding: 28px 22px;
            }

            .process-intro {
                margin-bottom: 4px;
            }

            .step-item {
                padding: 16px 0;
                gap: 12px;
            }

            .step-num {
                font-size: 17px;
                width: 34px;
            }

            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .stat-card {
                padding: 24px 16px;
            }

            .stat-num {
                font-size: 32px;
            }

            .gallery-grid {
                grid-template-columns: 1fr;
                grid-template-rows: repeat(4, 200px);
                grid-template-areas:
                    "a"
                    "b"
                    "c"
                    "d";
            }

            .faq-question {
                padding: 18px 18px;
                font-size: 14.5px;
                gap: 12px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.open .faq-answer {
                padding-bottom: 18px;
            }

            .cta-panel {
                padding: 40px 24px;
            }

            .cta-title {
                font-size: 26px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .site-footer {
                padding: 48px 0 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 360px) {
            .header-cta {
                display: none;
            }

            .logo {
                font-size: 18px;
            }

            .hero-title {
                font-size: 26px;
            }

            .stats-row {
                grid-template-columns: 1fr;
            }

            .gallery-grid {
                grid-template-rows: repeat(4, 180px);
            }
        }

        @media (prefers-reduced-motion: reduce) {

            *,
            *::before,
            *::after {
                transition: none !important;
                animation: none !important;
                scroll-behavior: auto !important;
            }
        }