/* roulang page: index */
:root{
  --primary-600:#6D28D9;--primary-500:#7C3AED;--primary-700:#5B21B6;--primary-100:#EDE9FE;
  --night-900:#1E1B4B;--night-800:#312E81;--night-700:#4338CA;
  --accent-cyan:#06B6D4;--accent-cyan-light:#22D3EE;
  --accent-gold:#F59E0B;--accent-gold-light:#FBBF24;
  --bg-content:#F8FAFC;--bg-purple-light:#F5F3FF;
  --text-main:#0F172A;--text-secondary:#475569;--text-muted:#94A3B8;
  --border-color:#E2E8F0;--shadow-sm:0 1px 2px rgba(15,23,42,.06);
  --shadow-md:0 4px 12px rgba(15,23,42,.08);--shadow-xl:0 12px 32px rgba(109,40,217,.18);
  --radius-xl:1rem;--radius-2xl:1.5rem;--radius-full:9999px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;background:var(--bg-content);color:var(--text-main);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:color .2s}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input{font-family:inherit}
.container{max-width:1280px;margin:0 auto;padding-left:1rem;padding-right:1rem}
@media(min-width:640px){.container{padding-left:1.5rem;padding-right:1.5rem}}
@media(min-width:1024px){.container{padding-left:2rem;padding-right:2rem}}

/* === Header === */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid #f1f5f9;height:64px}
@media(min-width:1024px){.site-header{height:80px}}
.logo-badge{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,#7C3AED,#312E81);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:14px;letter-spacing:.5px;box-shadow:0 4px 12px rgba(109,40,217,.25);transition:transform .2s}
.logo-badge:hover{transform:scale(1.06)}
.logo-text{font-size:22px;font-weight:800;color:var(--primary-600);letter-spacing:-.3px}
.nav-link{position:relative;font-size:15px;font-weight:500;color:var(--text-secondary);padding:8px 4px;transition:color .2s}
.nav-link::after{content:'';position:absolute;left:0;bottom:0;width:0;height:2px;border-radius:2px;background:var(--primary-500);transition:width .25s}
.nav-link:hover{color:var(--primary-600)}
.nav-link:hover::after{width:100%}
.nav-link.active{color:var(--primary-600);font-weight:600}
.nav-link.active::after{width:100%}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{width:160px;height:40px;border-radius:9999px;background:#F1F5F9;border:1px solid transparent;padding:0 16px 0 40px;font-size:14px;outline:none;transition:all .2s}
.search-box input:focus{width:200px;background:#fff;border-color:var(--primary-500);box-shadow:0 0 0 3px rgba(124,58,237,.12)}
.search-box svg{position:absolute;left:14px;width:16px;height:16px;color:var(--text-muted);pointer-events:none}
.btn-primary{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 24px;border-radius:9999px;background:var(--primary-500);color:#fff;font-size:15px;font-weight:600;box-shadow:var(--shadow-xl);transition:all .2s}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px);box-shadow:0 16px 36px rgba(109,40,217,.25)}
.btn-primary:active{transform:scale(.95)}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;height:44px;padding:0 24px;border-radius:9999px;background:rgba(255,255,255,.12);color:#fff;font-size:15px;font-weight:500;border:1px solid rgba(255,255,255,.25);backdrop-filter:blur(4px);transition:all .2s}
.btn-secondary:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.btn-secondary:active{transform:scale(.95)}
.btn-lg{height:52px;padding:0 32px;font-size:16px}
.hamburger{width:42px;height:42px;border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;background:var(--bg-purple-light);transition:background .2s}
.hamburger:hover{background:var(--primary-100)}
.hamburger span{width:20px;height:2px;background:var(--primary-600);border-radius:2px;transition:all .3s}
.mobile-menu{position:absolute;top:64px;left:16px;right:16px;background:#fff;border-radius:20px;box-shadow:0 20px 50px rgba(15,23,42,.15);padding:16px;display:none;z-index:99}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:14px 16px;border-radius:12px;font-size:16px;font-weight:500;color:var(--text-main);transition:background .2s}
.mobile-menu a:hover{background:var(--bg-purple-light);color:var(--primary-600)}
.mobile-menu a.active{color:var(--primary-600);background:var(--primary-100)}
.mobile-menu .btn-primary{margin-top:12px;width:100%}

/* === Hero === */
.hero-section{position:relative;background:linear-gradient(135deg,#1E1B4B 0%,#312E81 55%,#4338CA 100%);overflow:hidden}
.hero-bg{position:absolute;inset:0;background-size:cover;background-position:center;opacity:.35}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(15,23,42,.85) 0%,rgba(30,27,75,.6) 45%,rgba(67,56,202,.35) 100%)}
.hero-grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:48px 48px;pointer-events:none}
.hero-section .container{position:relative;z-index:2;padding-top:80px;padding-bottom:80px}
@media(min-width:1024px){.hero-section .container{padding-top:120px;padding-bottom:120px}}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(34,211,238,.15);border:1px solid rgba(34,211,238,.3);color:#67e8f9;font-size:13px;font-weight:600;padding:6px 16px;border-radius:9999px;margin-bottom:20px;letter-spacing:.5px}
.hero-tag::before{content:'';width:6px;height:6px;border-radius:50%;background:#22D3EE;box-shadow:0 0 8px #22D3EE;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.5}}
.hero-left h1{font-size:2rem;line-height:1.2;font-weight:800;color:#fff;letter-spacing:-.5px;margin-bottom:20px}
@media(min-width:640px){.hero-left h1{font-size:2.6rem}}
@media(min-width:1024px){.hero-left h1{font-size:3.2rem}}
.hero-left h1 .highlight{background:linear-gradient(90deg,#22D3EE,#67e8f9);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.hero-sub{font-size:17px;line-height:1.7;color:rgba(255,255,255,.85);max-width:520px;margin-bottom:32px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-right{position:relative;display:none}
@media(min-width:1024px){.hero-right{display:block}}
.hero-image{width:100%;border-radius:24px;box-shadow:0 24px 60px rgba(0,0,0,.4);border:1px solid rgba(255,255,255,.15)}
.float-card{position:absolute;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-radius:16px;padding:12px 16px;box-shadow:0 12px 32px rgba(15,23,42,.2);display:flex;align-items:center;gap:10px;animation:float 3s ease-in-out infinite}
.float-card .icon{width:36px;height:36px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px}
.float-card .label{font-size:12px;color:var(--text-muted)}
.float-card .value{font-size:14px;font-weight:700;color:var(--text-main)}
.float-card.card-1{top:12%;right:-14px;animation-delay:.3s}
.float-card.card-1 .icon{background:rgba(245,158,11,.15)}
.float-card.card-2{bottom:16%;left:-18px;animation-delay:1s}
.float-card.card-2 .icon{background:rgba(6,182,212,.15)}
.float-card .progress-mini{width:70px;height:5px;border-radius:99px;background:#E2E8F0;overflow:hidden;margin-top:3px}
.float-card .progress-mini span{display:block;height:100%;border-radius:99px;background:linear-gradient(90deg,#7C3AED,#22D3EE)}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
.scroll-indicator{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.6);font-size:22px;animation:bounce 2s infinite;z-index:3}
@keyframes bounce{0%,100%{transform:translate(-50%,0)}50%{transform:translate(-50%,8px)}}

/* === Section Title === */
.section-wrap{padding:64px 0}
@media(min-width:1024px){.section-wrap{padding:96px 0}}
.section-label{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:700;letter-spacing:1.5px;color:var(--primary-500);text-transform:uppercase;margin-bottom:12px}
.section-label::before{content:'';width:24px;height:2px;background:var(--primary-500);border-radius:2px}
.section-title h2{font-size:2rem;font-weight:800;color:var(--text-main);letter-spacing:-.5px;line-height:1.3}
@media(min-width:1024px){.section-title h2{font-size:2.4rem}}
.section-desc{font-size:16px;color:var(--text-secondary);max-width:560px;margin-top:12px;line-height:1.7}

/* === Gameplay Steps === */
.steps-grid{display:grid;grid-template-columns:1fr;gap:32px;margin-top:48px;position:relative}
@media(min-width:768px){.steps-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.steps-grid{grid-template-columns:repeat(4,1fr);gap:24px}}
.step-item{position:relative;text-align:left}
.step-number{width:56px;height:56px;border-radius:20px;background:linear-gradient(135deg,#7C3AED,#312E81);color:#fff;font-size:22px;font-weight:800;display:flex;align-items:center;justify-content:center;box-shadow:0 8px 24px rgba(109,40,217,.22);margin-bottom:20px;transition:transform .2s}
.step-item:hover .step-number{transform:scale(1.08) rotate(4deg)}
.step-item h3{font-size:18px;font-weight:700;color:var(--text-main);margin-bottom:8px}
.step-item p{font-size:14px;color:var(--text-secondary);line-height:1.7}
.step-connect{display:none;position:absolute;top:28px;left:calc(100% - 20px);width:40px;height:0;border-top:2px dashed #C4B5FD}
@media(min-width:1024px){.step-connect{display:block}}
.step-connect.arrow::after{content:'→';position:absolute;right:-4px;top:-10px;color:#C4B5FD;font-size:14px}

/* === News Cards === */
.news-grid{display:grid;grid-template-columns:1fr;gap:28px;margin-top:48px}
@media(min-width:640px){.news-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.news-grid{grid-template-columns:repeat(3,1fr)}}
.news-card{background:#fff;border-radius:var(--radius-2xl);border:1px solid #F1F5F9;box-shadow:var(--shadow-sm);overflow:hidden;transition:all .25s;display:flex;flex-direction:column}
.news-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-md);border-color:var(--primary-100)}
.news-card .cover{position:relative;aspect-ratio:16/9;background:#F1F5F9;overflow:hidden}
.news-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.news-card:hover .cover img{transform:scale(1.05)}
.news-card .cover-placeholder{display:flex;align-items:center;justify-content:center;width:100%;height:100%}
.news-card .badge{position:absolute;top:12px;right:12px;background:rgba(124,58,237,.9);color:#fff;font-size:12px;font-weight:600;padding:4px 12px;border-radius:9999px;backdrop-filter:blur(4px)}
.news-card .body{padding:20px 24px 24px;display:flex;flex-direction:column;flex:1}
.news-card h3{font-size:16px;font-weight:700;color:var(--text-main);line-height:1.5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:8px}
.news-card .summary{font-size:14px;color:var(--text-secondary);line-height:1.6;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;flex:1}
.news-card .meta{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:16px;border-top:1px solid #F1F5F9;font-size:13px;color:var(--text-muted)}
.news-card .read-more{display:inline-flex;align-items:center;gap:4px;color:var(--primary-500);font-weight:600;font-size:13px;transition:gap .2s}
.news-card:hover .read-more{gap:8px}
.empty-state{border:2px dashed var(--border-color);border-radius:var(--radius-2xl);padding:60px 20px;text-align:center;color:var(--text-muted);font-size:15px;background:#FAFAFA;margin-top:48px}
.empty-state .icon{font-size:36px;margin-bottom:12px}

/* === Rewards === */
.rewards-section{background:linear-gradient(135deg,#1E1B4B,#312E81 60%,#4338CA);position:relative;overflow:hidden}
.rewards-section::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:48px 48px}
.rewards-section .container{position:relative;z-index:2}
.rewards-section .section-label{color:#22D3EE}
.rewards-section .section-label::before{background:#22D3EE}
.rewards-section h2{color:#fff}
.rewards-section .section-desc{color:rgba(255,255,255,.7)}
.rewards-grid{display:grid;grid-template-columns:1fr;gap:24px;margin-top:48px}
@media(min-width:640px){.rewards-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.rewards-grid{grid-template-columns:repeat(4,1fr)}}
.reward-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-2xl);padding:32px 24px;text-align:center;backdrop-filter:blur(8px);transition:all .25s;position:relative}
.reward-card:hover{transform:translateY(-6px);background:rgba(255,255,255,.1);box-shadow:0 20px 40px rgba(0,0,0,.25)}
.reward-card.featured{border-color:rgba(245,158,11,.45);background:rgba(245,158,11,.08);box-shadow:0 0 40px rgba(245,158,11,.15),inset 0 0 20px rgba(245,158,11,.04)}
.reward-card .tier-badge{font-size:12px;font-weight:700;letter-spacing:1px;color:#FBBF24;text-transform:uppercase;margin-bottom:8px;display:inline-block}
.reward-card .icon-wrap{width:72px;height:72px;border-radius:24px;background:rgba(124,58,237,.2);display:flex;align-items:center;justify-content:center;margin:16px auto;font-size:32px;border:1px solid rgba(124,58,237,.3)}
.reward-card.featured .icon-wrap{background:rgba(245,158,11,.2);border-color:rgba(245,158,11,.35)}
.reward-card h3{color:#fff;font-size:20px;font-weight:700;margin-bottom:8px}
.reward-card .condition{color:rgba(255,255,255,.55);font-size:13px;margin-bottom:16px;line-height:1.5}
.reward-card .reward-desc{color:rgba(255,255,255,.75);font-size:14px;line-height:1.6}

/* === Tasks === */
.tasks-card{background:#fff;border-radius:var(--radius-2xl);border:1px solid #F1F5F9;box-shadow:var(--shadow-sm);padding:32px;margin-top:48px}
@media(min-width:768px){.tasks-card{padding:40px}}
.task-item{display:flex;align-items:center;gap:16px;padding:20px 0;border-bottom:1px solid #F1F5F9;flex-wrap:wrap}
.task-item:last-child{border-bottom:none}
.task-name{font-size:16px;font-weight:600;color:var(--text-main);min-width:130px}
.task-progress{flex:1;min-width:120px}
.progress-bar{height:8px;border-radius:9999px;background:#F1F5F9;overflow:hidden}
.progress-bar span{display:block;height:100%;border-radius:9999px;background:linear-gradient(90deg,#7C3AED,#22D3EE);transition:width .6s ease}
.task-status{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;padding:6px 14px;border-radius:9999px;white-space:nowrap}
.task-status.running{background:rgba(6,182,212,.1);color:#0E7490}
.task-status.done{background:rgba(16,185,129,.12);color:#047857}
.task-status.pending{background:#F1F5F9;color:var(--text-muted)}
.task-status .dot{width:6px;height:6px;border-radius:50%}
.task-status.running .dot{background:#06B6D4;animation:pulse 1.5s infinite}
.task-status.done .dot{background:#10B981}
.task-status.pending .dot{background:#CBD5E1}

/* === FAQ === */
.faq-list{max-width:800px;margin:48px auto 0;display:flex;flex-direction:column;gap:16px}
.faq-item{background:#fff;border-radius:var(--radius-xl);border:1px solid #F1F5F9;box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .25s}
.faq-item:hover{box-shadow:var(--shadow-md)}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text-main);text-align:left;transition:color .2s}
.faq-question:hover{color:var(--primary-600)}
.faq-icon{width:22px;height:22px;border-radius:50%;background:var(--primary-100);color:var(--primary-600);display:flex;align-items:center;justify-content:center;font-size:14px;transition:transform .3s,background .2s;flex-shrink:0}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--primary-500);color:#fff}
.faq-answer{display:none;padding:0 24px 20px;font-size:15px;color:var(--text-secondary);line-height:1.7}
.faq-item.open .faq-answer{display:block;animation:fadeIn .25s}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}

/* === CTA === */
.cta-section{background:linear-gradient(135deg,#1E1B4B,#4338CA);border-radius:var(--radius-2xl);padding:48px 32px;text-align:center;position:relative;overflow:hidden}
@media(min-width:768px){.cta-section{padding:72px 48px}}
.cta-section::before{content:'';position:absolute;top:-50%;left:-20%;width:70%;height:200%;background:radial-gradient(circle,rgba(124,58,237,.3),transparent 60%);pointer-events:none}
.cta-section h2{font-size:28px;font-weight:800;color:#fff;margin-bottom:16px;position:relative}
@media(min-width:768px){.cta-section h2{font-size:40px}}
.cta-section p{color:rgba(255,255,255,.75);font-size:16px;max-width:520px;margin:0 auto 32px;line-height:1.7;position:relative}
.cta-btn{display:inline-flex;align-items:center;justify-content:center;height:56px;padding:0 40px;border-radius:9999px;background:linear-gradient(135deg,#22D3EE,#06B6D4);color:#0F172A;font-size:17px;font-weight:700;box-shadow:0 12px 40px rgba(6,182,212,.35);transition:all .25s;position:relative}
.cta-btn:hover{transform:translateY(-3px);box-shadow:0 18px 50px rgba(6,182,212,.45)}
.cta-btn:active{transform:scale(.95)}
.cta-btn .shine{position:absolute;top:0;left:-100%;width:50%;height:100%;background:linear-gradient(100deg,transparent,rgba(255,255,255,.5),transparent);animation:shine 3s infinite}
@keyframes shine{0%,60%{left:-100%}100%{left:120%}}

/* === Footer === */
.site-footer{background:#0F172A;color:#94A3B8;padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;padding-bottom:48px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(min-width:1024px){.footer-grid{grid-template-columns:2fr 1fr 1fr 1.5fr}}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.7;color:#64748B;margin-top:16px;max-width:320px}
.footer-heading{font-size:14px;font-weight:700;color:#fff;margin-bottom:20px;letter-spacing:.5px}
.footer-links{list-style:none;display:flex;flex-direction:column;gap:12px}
.footer-links a{font-size:14px;color:#94A3B8;transition:color .2s,padding-left .2s}
.footer-links a:hover{color:#22D3EE;padding-left:6px}
.footer-contact{display:flex;flex-direction:column;gap:14px;font-size:14px}
.footer-contact .item{display:flex;align-items:flex-start;gap:10px}
.footer-contact .item svg{width:16px;height:16px;color:#22D3EE;margin-top:3px;flex-shrink:0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:24px 0;display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:12px}
@media(min-width:768px){.footer-bottom{flex-direction:row}}
.footer-bottom p{font-size:13px;color:#64748B}

/* === Responsive === */
@media(max-width:1023px){
  .desktop-nav{display:none!important}
  .desktop-actions{display:none!important}
}
@media(min-width:1024px){
  .hamburger{display:none!important}
  .mobile-menu{display:none!important}
}

/* misc utility */
.bg-purple-soft{background:var(--bg-purple-light)}
.text-gradient{background:linear-gradient(90deg,#7C3AED,#22D3EE);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.border-soft{border:1px solid #F1F5F9}
.shadow-card{box-shadow:var(--shadow-sm)}
.shadow-card-hover:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.img-fallback{background:#F1F5F9;display:flex;align-items:center;justify-content:center;color:#CBD5E1}

/* roulang page: article */
:root {
            --primary-600: #6D28D9;
            --primary-500: #7C3AED;
            --primary-700: #5B21B6;
            --primary-100: #EDE9FE;
            --night-900: #1E1B4B;
            --night-800: #312E81;
            --night-700: #4338CA;
            --accent: #06B6D4;
            --accent-light: #22D3EE;
            --gold: #F59E0B;
            --gold-light: #FBBF24;
            --bg-content: #F8FAFC;
            --bg-purple-soft: #F5F3FF;
            --text-main: #0F172A;
            --text-sub: #475569;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --radius-2xl: 1.5rem;
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
            --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
            --shadow-xl: 0 20px 25px -5px rgb(109 40 217 / 0.25);
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-content);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 1rem;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.2s ease;
        }

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

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

        .container {
            width: 100%;
            max-width: 80rem;
            margin: 0 auto;
            padding: 0 1rem;
        }

        @media (min-width: 640px) {
            .container {
                padding: 0 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding: 0 2rem;
            }
        }

        /* ========== Header ========== */
        .site-header {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(8px);
            border-bottom: 1px solid #F1F5F9;
            height: 4rem;
            position: sticky;
            top: 0;
            z-index: 100;
        }

        @media (min-width: 1024px) {
            .site-header {
                height: 5rem;
            }
        }

        .logo-badge {
            width: 2.25rem;
            height: 2.25rem;
            background: linear-gradient(135deg, #7C3AED, #1E1B4B);
            border-radius: 9999px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 0.75rem;
            letter-spacing: 0.05em;
            box-shadow: 0 4px 12px rgba(109, 40, 217, 0.3);
            transition: transform 0.25s ease;
        }

        .logo-badge:hover {
            transform: scale(1.06);
        }

        .logo-text {
            font-size: 1.375rem;
            font-weight: 800;
            color: var(--primary-600);
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .desktop-nav .nav-link {
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-sub);
            padding: 0.25rem 0.125rem;
            position: relative;
            transition: color 0.25s ease;
        }

        .desktop-nav .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: -0.25rem;
            width: 0;
            height: 2px;
            background: var(--primary-500);
            border-radius: 9999px;
            transition: width 0.3s ease;
        }

        .desktop-nav .nav-link:hover {
            color: var(--primary-600);
        }

        .desktop-nav .nav-link:hover::after {
            width: 100%;
        }

        .desktop-nav .nav-link.active {
            color: var(--primary-600);
            font-weight: 600;
        }

        .desktop-nav .nav-link.active::after {
            width: 100%;
        }

        .search-box {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            background: #F1F5F9;
            border-radius: 9999px;
            padding: 0.4375rem 1rem;
            width: 10rem;
            border: 1px solid transparent;
            transition: all 0.25s ease;
        }

        .search-box svg {
            width: 1rem;
            height: 1rem;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .search-box input {
            background: transparent;
            border: none;
            font-size: 0.875rem;
            color: var(--text-main);
            width: 100%;
        }

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

        .search-box:focus-within {
            border-color: var(--primary-500);
            box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
            background: #fff;
        }

        @media (min-width: 1024px) {
            .search-box {
                width: 12rem;
            }
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-500);
            color: #fff;
            font-weight: 600;
            font-size: 0.875rem;
            padding: 0.625rem 1.5rem;
            border-radius: 9999px;
            box-shadow: 0 4px 14px rgba(109, 40, 217, 0.35);
            transition: all 0.25s ease;
            border: none;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: var(--primary-600);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(109, 40, 217, 0.4);
        }

        .btn-primary:active {
            transform: scale(0.96);
        }

        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            font-weight: 600;
            font-size: 0.875rem;
            padding: 0.625rem 1.5rem;
            border-radius: 9999px;
            border: 1px solid rgba(255, 255, 255, 0.3);
            transition: all 0.25s ease;
            line-height: 1.4;
            white-space: nowrap;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.5);
        }

        .hamburger {
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 2.5rem;
            height: 2.5rem;
            padding: 0.5rem;
            border-radius: 0.75rem;
            transition: background 0.2s ease;
        }

        .hamburger:hover {
            background: #F1F5F9;
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--text-main);
            border-radius: 9999px;
            transition: all 0.3s ease;
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: absolute;
            top: 4rem;
            left: 1rem;
            right: 1rem;
            background: #fff;
            border-radius: 1rem;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
            padding: 1rem;
            flex-direction: column;
            gap: 0.25rem;
            z-index: 99;
            border: 1px solid #F1F5F9;
        }

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

        .mobile-menu a {
            padding: 0.75rem 1rem;
            border-radius: 0.75rem;
            font-weight: 500;
            color: var(--text-sub);
            transition: all 0.2s ease;
        }

        .mobile-menu a:hover {
            background: var(--primary-50);
            color: var(--primary-600);
        }

        .mobile-menu a.active {
            background: var(--primary-50);
            color: var(--primary-600);
            font-weight: 600;
        }

        .mobile-menu .btn-primary {
            margin-top: 0.5rem;
            justify-content: center;
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-wrap {
            background: #fff;
            border-bottom: 1px solid #F1F5F9;
            padding: 0.75rem 0;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.375rem;
            font-size: 0.8125rem;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .breadcrumb a {
            color: var(--text-sub);
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: var(--primary-600);
        }

        .breadcrumb .sep {
            color: #CBD5E1;
        }

        .breadcrumb .current {
            color: var(--primary-600);
            font-weight: 500;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 240px;
        }

        /* ========== Article Layout ========== */
        .article-page {
            background: var(--bg-content);
            padding: 3rem 0 5rem;
        }

        .article-container {
            max-width: 48rem;
            margin: 0 auto;
            padding: 0 1.25rem;
        }

        @media (min-width: 768px) {
            .article-container {
                padding: 0 1.5rem;
            }
        }

        .article-header {
            margin-bottom: 2rem;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            background: var(--primary-100);
            color: var(--primary-700);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.25rem 0.875rem;
            border-radius: 9999px;
            margin-bottom: 1rem;
            letter-spacing: 0.02em;
        }

        .article-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 1.25rem;
            letter-spacing: -0.01em;
        }

        @media (min-width: 768px) {
            .article-title {
                font-size: 2.25rem;
            }
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.25rem;
            color: var(--text-muted);
            font-size: 0.8125rem;
            padding-bottom: 1.5rem;
            border-bottom: 1px solid #E2E8F0;
        }

        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 0.375rem;
        }

        .article-meta svg {
            width: 0.9375rem;
            height: 0.9375rem;
        }

        .article-meta .views-dot {
            width: 0.3125rem;
            height: 0.3125rem;
            border-radius: 9999px;
            background: var(--text-muted);
            display: inline-block;
            margin-right: 0.25rem;
        }

        .article-body {
            padding-top: 2rem;
        }

        .article-body .content {
            font-size: 1.0625rem;
            line-height: 1.9;
            color: #334155;
        }

        .article-body .content p {
            margin-bottom: 1.5rem;
        }

        .article-body .content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 2.5rem 0 1rem;
            line-height: 1.4;
        }

        .article-body .content h3 {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-main);
            margin: 2rem 0 0.75rem;
            line-height: 1.4;
        }

        .article-body .content ul,
        .article-body .content ol {
            margin: 0 0 1.5rem 0;
            padding-left: 1.5rem;
        }

        .article-body .content ul li,
        .article-body .content ol li {
            margin-bottom: 0.5rem;
        }

        .article-body .content ul {
            list-style: disc;
        }

        .article-body .content ol {
            list-style: decimal;
        }

        .article-body .content blockquote {
            border-left: 4px solid var(--primary-500);
            background: var(--primary-50);
            padding: 1rem 1.5rem;
            border-radius: 0 0.75rem 0.75rem 0;
            margin: 1.5rem 0;
            color: var(--text-sub);
            font-style: normal;
        }

        .article-body .content blockquote p {
            margin-bottom: 0;
        }

        .article-body .content img {
            border-radius: 1rem;
            margin: 1.5rem 0;
            box-shadow: var(--shadow-md);
        }

        .article-body .content a {
            color: var(--primary-600);
            text-decoration: underline;
            text-underline-offset: 2px;
        }

        .article-body .content a:hover {
            color: var(--primary-700);
        }

        .article-body .content code {
            background: #F1F5F9;
            border-radius: 0.375rem;
            padding: 0.125rem 0.375rem;
            font-size: 0.875rem;
            color: #DB2777;
        }

        .article-body .content table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.5rem 0;
            font-size: 0.9375rem;
        }

        .article-body .content table th,
        .article-body .content table td {
            border: 1px solid #E2E8F0;
            padding: 0.75rem 1rem;
            text-align: left;
        }

        .article-body .content table th {
            background: #F8FAFC;
            font-weight: 600;
        }

        /* 文章标签 */
        .article-tags {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid #E2E8F0;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .article-tags .tag-label {
            font-size: 0.8125rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-right: 0.25rem;
        }

        .tag-chip {
            display: inline-block;
            background: #fff;
            border: 1px solid #E2E8F0;
            border-radius: 9999px;
            padding: 0.25rem 0.875rem;
            font-size: 0.75rem;
            color: var(--text-sub);
            transition: all 0.2s ease;
        }

        .tag-chip:hover {
            border-color: var(--primary-300);
            color: var(--primary-600);
            background: var(--primary-50);
        }

        .article-footer-action {
            margin-top: 1.75rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .btn-back-category {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--primary-600);
            padding: 0.5rem 1.25rem;
            border-radius: 9999px;
            border: 1px solid var(--primary-200);
            background: #fff;
            transition: all 0.25s ease;
        }

        .btn-back-category:hover {
            background: var(--primary-50);
            border-color: var(--primary-400);
            transform: translateY(-1px);
        }

        /* ========== 相关推荐 ========== */
        .related-section {
            background: #fff;
            padding: 4rem 0;
            border-top: 1px solid #F1F5F9;
        }

        .section-title-wrap {
            margin-bottom: 2.5rem;
        }

        .section-tag-small {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            color: var(--primary-500);
            margin-bottom: 0.5rem;
            text-transform: uppercase;
        }

        .related-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
        }

        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 640px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (min-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .news-card {
            background: #fff;
            border-radius: var(--radius-xl);
            border: 1px solid #F1F5F9;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.08);
            border-color: var(--primary-100);
        }

        .news-card .cover-wrap {
            position: relative;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #F1F5F9;
        }

        .news-card .cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .news-card:hover .cover-wrap img {
            transform: scale(1.04);
        }

        .news-card .cat-badge {
            position: absolute;
            top: 0.75rem;
            right: 0.75rem;
            background: rgba(124, 58, 237, 0.85);
            color: #fff;
            font-size: 0.6875rem;
            font-weight: 600;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            backdrop-filter: blur(4px);
        }

        .news-card .card-body {
            padding: 1.25rem;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 0.5rem;
        }

        .news-card .card-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.2s ease;
        }

        .news-card:hover .card-title {
            color: var(--primary-600);
        }

        .news-card .card-excerpt {
            font-size: 0.875rem;
            color: var(--text-sub);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .news-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 0.75rem;
            padding-top: 0.75rem;
            border-top: 1px solid #F8FAFC;
            font-size: 0.75rem;
            color: var(--text-muted);
        }

        .news-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 0.25rem;
            color: var(--primary-600);
            font-weight: 500;
            font-size: 0.8125rem;
            transition: all 0.2s ease;
        }

        .news-card .read-more svg {
            width: 0.875rem;
            height: 0.875rem;
            transition: transform 0.2s ease;
        }

        .news-card:hover .read-more svg {
            transform: translateX(3px);
        }

        /* 相关推荐空状态 */
        .related-empty {
            background: #F8FAFC;
            border: 1px dashed #E2E8F0;
            border-radius: var(--radius-2xl);
            padding: 3rem 2rem;
            text-align: center;
            grid-column: 1 / -1;
        }

        .related-empty svg {
            width: 2.5rem;
            height: 2.5rem;
            color: var(--text-muted);
            margin: 0 auto 0.75rem;
        }

        .related-empty p {
            color: var(--text-muted);
            font-size: 0.9375rem;
        }

        /* 内容未找到状态 */
        .not-found {
            text-align: center;
            padding: 5rem 1.5rem;
            max-width: 32rem;
            margin: 0 auto;
        }

        .not-found-icon {
            width: 4rem;
            height: 4rem;
            border-radius: 9999px;
            background: var(--primary-50);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.25rem;
        }

        .not-found-icon svg {
            width: 1.75rem;
            height: 1.75rem;
            color: var(--primary-500);
        }

        .not-found h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.75rem;
        }

        .not-found p {
            color: var(--text-sub);
            margin-bottom: 1.5rem;
        }

        .btn-home {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: var(--primary-500);
            color: #fff;
            font-weight: 500;
            font-size: 0.9375rem;
            padding: 0.625rem 1.75rem;
            border-radius: 9999px;
            transition: all 0.25s ease;
        }

        .btn-home:hover {
            background: var(--primary-600);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(109, 40, 217, 0.35);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #020617;
            color: #94A3B8;
            padding: 4rem 0 0;
        }

        .site-footer .logo-text {
            color: #fff;
        }

        .site-footer .logo-badge {
            background: linear-gradient(135deg, #7C3AED, #4338CA);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem 2rem;
            padding-bottom: 3rem;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1.25fr;
            }
        }

        .footer-brand p {
            font-size: 0.875rem;
            line-height: 1.8;
            margin-top: 1rem;
            color: #737A91;
        }

        .footer-heading {
            font-size: 0.9375rem;
            font-weight: 600;
            color: #E2E8F0;
            margin-bottom: 1rem;
            position: relative;
        }

        .site-footer ul.footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .site-footer ul.footer-links a {
            font-size: 0.875rem;
            color: #94A3B8;
            transition: all 0.2s ease;
        }

        .site-footer ul.footer-links a:hover {
            color: #fff;
            padding-left: 2px;
        }

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .footer-contact .item {
            display: flex;
            align-items: center;
            gap: 0.5625rem;
            font-size: 0.8125rem;
            color: #94A3B8;
        }

        .footer-contact .item svg {
            width: 1rem;
            height: 1rem;
            color: var(--primary-400);
            flex-shrink: 0;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 1.25rem 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 0.25rem;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 0.75rem;
            color: #64748B;
        }

        .footer-bottom p:first-child {
            color: #94A3B8;
        }

        @media (min-width: 640px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                text-align: left;
            }
        }

        /* ========== 移动端适配 ========== */
        @media (max-width: 520px) {
            .article-title {
                font-size: 1.5rem;
            }

            .article-meta {
                gap: 0.75rem;
            }

            .article-body .content {
                font-size: 1rem;
            }

            .related-title {
                font-size: 1.5rem;
            }

            .breadcrumb .current {
                max-width: 140px;
            }
        }

/* roulang page: category1 */
:root {
  --primary-600: #6D28D9;
  --primary-500: #7C3AED;
  --primary-700: #5B21B6;
  --primary-100: #EDE9FE;
  --primary-50: #F5F3FF;
  --night-900: #1E1B4B;
  --night-800: #312E81;
  --night-700: #4338CA;
  --cyan-500: #06B6D4;
  --cyan-400: #22D3EE;
  --gold-500: #F59E0B;
  --gold-400: #FBBF24;
  --bg-page: #F8FAFC;
  --bg-purple-light: #F5F3FF;
  --text-main: #0F172A;
  --text-sub: #475569;
  --text-muted: #94A3B8;
  --border: #E2E8F0;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --shadow-sm: 0 1px 2px rgba(15,23,42,.06);
  --shadow-md: 0 4px 20px rgba(15,23,42,.08);
  --shadow-lg: 0 12px 40px rgba(15,23,42,.12);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  color: var(--text-main);
  background: var(--bg-page);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
button { font-family: inherit; }

.container {
  max-width: 80rem;
  margin: 0 auto;
  padding-left: 1rem;
  padding-right: 1rem;
}
@media (min-width: 640px) {
  .container { padding-left: 1.5rem; padding-right: 1.5rem; }
}
@media (min-width: 1024px) {
  .container { padding-left: 2rem; padding-right: 2rem; }
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid #F1F5F9;
  transition: box-shadow .3s;
}
.site-header.scrolled {
  box-shadow: 0 6px 24px rgba(15,23,42,.08);
}
.logo-badge {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #7C3AED, #312E81);
  color: #fff;
  font-weight: 800;
  font-size: .95rem;
  letter-spacing: .02em;
  box-shadow: 0 4px 12px rgba(124,58,237,.35);
  transition: transform .25s ease, box-shadow .25s ease;
}
.logo-text {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-600);
  letter-spacing: .5px;
  transition: color .2s;
}
a:hover .logo-badge {
  transform: scale(1.06);
  box-shadow: 0 6px 18px rgba(124,58,237,.45);
}
a:hover .logo-text {
  color: var(--primary-700);
}
.nav-link {
  position: relative;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-sub);
  padding: 6px 2px;
  transition: color .25s;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, #7C3AED, #22D3EE);
  transition: width .3s ease;
}
.nav-link:hover { color: var(--primary-600); }
.nav-link:hover::after { width: 100%; }
.nav-link.active {
  color: var(--primary-600);
  font-weight: 600;
}
.nav-link.active::after { width: 100%; }
.search-box {
  position: relative;
  width: 170px;
}
.search-box svg {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  pointer-events: none;
}
.search-box input {
  width: 100%;
  height: 38px;
  border-radius: 9999px;
  background: #F1F5F9;
  border: 1px solid transparent;
  padding: 0 12px 0 36px;
  font-size: .875rem;
  color: #1E293B;
  transition: all .25s;
  font-family: var(--font-sans);
}
.search-box input::placeholder { color: var(--text-muted); }
.search-box input:focus {
  outline: none;
  border-color: var(--primary-500);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(124,58,237,.12);
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 9999px;
  background: linear-gradient(135deg, #7C3AED, #6D28D9);
  color: #fff;
  font-weight: 600;
  font-size: .95rem;
  box-shadow: 0 4px 16px rgba(124,58,237,.35);
  transition: all .3s ease;
  border: none;
  cursor: pointer;
  text-decoration: none;
  line-height: 1.5;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #6D28D9, #5B21B6);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(124,58,237,.45);
}
.btn-primary:active { transform: scale(.96); }
.btn-primary:focus-visible {
  outline: 3px solid rgba(34,211,238,.5);
  outline-offset: 2px;
}
.btn-lg {
  padding: 14px 40px;
  font-size: 1.05rem;
}
.hamburger {
  width: 42px;
  height: 42px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  background: none;
  border: 1px solid var(--border);
  border-radius: 12px;
  cursor: pointer;
  transition: all .2s;
}
.hamburger span {
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all .3s;
}
.hamburger:hover {
  border-color: var(--primary-500);
  background: var(--primary-50);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
.mobile-menu {
  display: none;
  padding: 12px 16px 20px;
  background: #fff;
  border-top: 1px solid #F1F5F9;
  border-radius: 0 0 16px 16px;
}
.mobile-menu.show { display: block; }
.mobile-menu a {
  display: block;
  padding: 12px 8px;
  border-radius: 10px;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-sub);
  transition: all .2s;
}
.mobile-menu a:hover {
  background: var(--primary-50);
  color: var(--primary-600);
}
.mobile-menu a.active {
  color: var(--primary-600);
  font-weight: 600;
  background: var(--primary-50);
}
.mobile-menu .btn-primary {
  margin-top: 12px;
  width: 100%;
}

/* Page Banner */
.page-banner {
  position: relative;
  padding: 76px 0 68px;
  background: linear-gradient(135deg, #1E1B4B 0%, #312E81 55%, #6D28D9 100%);
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: .25;
  z-index: 0;
}
.page-banner::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(30,27,75,.7) 0%, rgba(49,46,129,.4) 100%);
  z-index: 1;
}
.page-banner .grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 2;
  pointer-events: none;
}
.page-banner .container {
  position: relative;
  z-index: 3;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .875rem;
  color: rgba(255,255,255,.6);
  margin-bottom: 22px;
}
.breadcrumb a {
  color: rgba(255,255,255,.75);
  transition: color .2s;
}
.breadcrumb a:hover { color: #22D3EE; }
.breadcrumb .separator { color: rgba(255,255,255,.35); }
.page-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  letter-spacing: .02em;
}
.page-title .text-highlight {
  color: #22D3EE;
  background: linear-gradient(120deg, #22D3EE 20%, #7C3AED 80%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-desc {
  margin-top: 14px;
  max-width: 680px;
  color: rgba(255,255,255,.78);
  font-size: 1rem;
  line-height: 1.7;
}

/* Section Common */
.section { padding: 64px 0; }
.section-purple-bg { background: var(--primary-50); }
.section-title-wrap {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 36px;
}
.section-title-bar {
  width: 4px;
  height: 38px;
  border-radius: 4px;
  background: linear-gradient(180deg, #7C3AED, #22D3EE);
  flex-shrink: 0;
  margin-top: 4px;
}
.section-kicker {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--primary-500);
  text-transform: uppercase;
  display: block;
}
.section-title {
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.3;
  margin-top: 2px;
}
.section-subtitle {
  font-size: .95rem;
  color: var(--text-sub);
  margin-top: 6px;
  line-height: 1.6;
}

/* Feature Banner */
.feature-banner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
  background: #fff;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid #F1F5F9;
  transition: box-shadow .3s
}
.feature-banner:hover { box-shadow: var(--shadow-lg); }
.feature-media {
  position: relative;
  min-height: 340px;
}
.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}
.feature-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent 60%, rgba(30,27,75,.06));
  pointer-events: none;
}
.feature-body {
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.feature-tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 9999px;
  background: var(--primary-50);
  color: var(--primary-600);
  font-size: .8rem;
  font-weight: 600;
  border: 1px solid rgba(124,58,237,.15);
  margin-bottom: 16px;
  align-self: flex-start;
}
.feature-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin-bottom: 12px;
}
.feature-text {
  color: var(--text-sub);
  font-size: .95rem;
  line-height: 1.75;
  margin-bottom: 22px;
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: #fff;
  border-radius: var(--radius-2xl);
  overflow: hidden;
  border: 1px solid #F1F5F9;
  box-shadow: var(--shadow-sm);
  transition: all .3s ease;
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-100);
}
.card-media {
  position: relative;
  aspect-ratio: 16/9;
  background: #F1F5F9;
  overflow: hidden;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.card:hover .card-media img { transform: scale(1.04); }
.card-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 4px 12px;
  border-radius: 9999px;
  background: rgba(124,58,237,.85);
  color: #fff;
  font-size: .75rem;
  font-weight: 600;
  backdrop-filter: blur(4px);
  z-index: 2;
}
.card-body {
  padding: 20px 20px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  line-height: 1.4;
  transition: color .2s;
}
.card:hover .card-title { color: var(--primary-600); }
.card-excerpt {
  font-size: .9rem;
  color: var(--text-sub);
  line-height: 1.65;
  flex: 1;
}
.card-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: .875rem;
  font-weight: 600;
  color: var(--primary-600);
  margin-top: 16px;
  transition: gap .25s, color .2s;
}
.card-link:hover { gap: 8px; color: var(--primary-700); }

/* Steps */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.step-item {
  position: relative;
  background: #fff;
  border-radius: 20px;
  padding: 32px 24px;
  border: 1px solid #F1F5F9;
  box-shadow: var(--shadow-sm);
  transition: all .3s;
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-100);
}
.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #7C3AED, #5B21B6);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  font-weight: 800;
  margin-bottom: 18px;
  box-shadow: 0 4px 12px rgba(124,58,237,.3);
}
.step-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}
.step-text {
  font-size: .875rem;
  color: var(--text-sub);
  line-height: 1.65;
}

/* FAQ */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border-radius: 16px;
  border: 1px solid #F1F5F9;
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s;
}
.faq-item.open {
  border-color: var(--primary-100);
  box-shadow: var(--shadow-md);
}
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  cursor: pointer;
  font-size: .95rem;
  font-weight: 600;
  color: var(--text-main);
  gap: 16px;
  transition: color .2s;
  user-select: none;
}
.faq-item.open .faq-question { color: var(--primary-600); }
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--text-sub);
  transition: all .25s;
  flex-shrink: 0;
  line-height: 1;
}
.faq-item.open .faq-icon {
  background: var(--primary-600);
  color: #fff;
  border-color: var(--primary-600);
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}
.faq-answer-inner {
  padding: 0 24px 20px;
  color: var(--text-sub);
  font-size: .9rem;
  line-height: 1.7;
}

/* CTA */
.cta-section {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(135deg, #1E1B4B 0%, #312E81 50%, #4338CA 100%);
  overflow: hidden;
  text-align: center;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -120px;
  right: -80px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(34,211,238,.28), transparent 70%);
  pointer-events: none;
}
.cta-section::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,.32), transparent 70%);
  pointer-events: none;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-title {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}
.cta-subtitle {
  color: rgba(255,255,255,.75);
  font-size: 1rem;
  margin-bottom: 32px;
}

/* Footer */
.site-footer {
  background: #020617;
  color: rgba(148,163,184,.9);
  padding: 64px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand .logo-text { color: #fff; }
.footer-brand p {
  margin-top: 16px;
  font-size: .875rem;
  line-height: 1.7;
  color: #64748B;
}
.footer-heading {
  font-size: .95rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links { list-style: none; padding: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: #64748B;
  font-size: .875rem;
  transition: color .2s;
  text-decoration: none;
}
.footer-links a:hover { color: #22D3EE; }
.footer-contact .item {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: .875rem;
  color: #64748B;
}
.footer-contact svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: #7C3AED;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  font-size: .8rem;
  color: #475569;
}

/* Responsive */
@media (max-width: 1024px) {
  .feature-banner { grid-template-columns: 1fr; }
  .feature-media { min-height: 260px; }
  .feature-media img { position: relative; }
  .feature-body { padding: 32px; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
}

@media (max-width: 640px) {
  .page-banner { padding: 56px 0 48px; }
  .page-title { font-size: 1.9rem; }
  .section { padding: 48px 0; }
  .section-title { font-size: 1.5rem; }
  .card-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr; }
  .feature-body { padding: 24px; }
  .feature-media { min-height: 200px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .cta-title { font-size: 1.5rem; }
  .cta-section { padding: 56px 0; }
}

/* roulang page: category2 */
:root {
    --primary-600: #6D28D9;
    --primary-500: #7C3AED;
    --primary-700: #5B21B6;
    --primary-100: #EDE9FE;
    --night-900: #1E1B4B;
    --night-800: #312E81;
    --night-700: #4338CA;
    --cyan: #06B6D4;
    --cyan-light: #22D3EE;
    --gold: #F59E0B;
    --gold-light: #FBBF24;
    --bg-content: #F8FAFC;
    --bg-soft-purple: #F5F3FF;
    --text-main: #0F172A;
    --text-sub: #475569;
    --text-weak: #94A3B8;
    --border: #E2E8F0;
    --danger: #EF4444;
    --success: #10B981;
    --radius-card: 1rem;
    --radius-btn: 9999px;
    --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.06), 0 4px 14px rgba(15, 23, 42, 0.04);
    --shadow-card-hover: 0 12px 30px rgba(15, 23, 42, 0.08), 0 4px 10px rgba(124, 58, 237, 0.08);
    --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  }

  * { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: var(--font-sans);
    color: var(--text-main);
    background: var(--bg-content);
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
  }
  img { max-width: 100%; display: block; }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; cursor: pointer; }
  input, textarea, select { font-family: inherit; }

  .container {
    width: 100%;
    max-width: 80rem;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1rem;
    padding-right: 1rem;
  }
  @media (min-width: 640px) {
    .container { padding-left: 1.5rem; padding-right: 1.5rem; }
  }
  @media (min-width: 1024px) {
    .container { padding-left: 2rem; padding-right: 2rem; }
  }

  /* ===== Header ===== */
  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #F1F5F9;
    box-shadow: 0 1px 4px rgba(15, 23, 42, 0.03);
  }
  .logo-badge {
    width: 40px;
    height: 40px;
    border-radius: 9999px;
    background: linear-gradient(135deg, #7C3AED, #312E81);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 800;
    font-size: 0.9rem;
    letter-spacing: 0.04em;
    box-shadow: 0 4px 10px rgba(124, 58, 237, 0.25);
  }
  .logo-text {
    font-weight: 800;
    font-size: 1.2rem;
    color: var(--primary-600);
    letter-spacing: 0.02em;
    white-space: nowrap;
  }
  .desktop-nav .nav-link {
    position: relative;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-sub);
    padding: 0.35rem 0;
    transition: color 0.25s;
  }
  .desktop-nav .nav-link:hover {
    color: var(--primary-600);
  }
  .desktop-nav .nav-link.active {
    color: var(--primary-600);
    font-weight: 600;
  }
  .desktop-nav .nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 100%;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--primary-500), var(--cyan));
  }
  .search-box {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    width: 10rem;
    background: #F1F5F9;
    border-radius: 9999px;
    padding: 0.45rem 0.85rem;
    color: var(--text-weak);
    border: 1px solid transparent;
    transition: border-color 0.25s, box-shadow 0.25s, background 0.25s;
  }
  .search-box svg { width: 16px; height: 16px; flex-shrink: 0; }
  .search-box input {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    font-size: 0.875rem;
    color: var(--text-main);
  }
  .search-box:focus-within {
    background: #fff;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.12);
  }
  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    background: var(--primary-500);
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.6rem 1.4rem;
    border-radius: 9999px;
    box-shadow: 0 4px 14px rgba(124, 58, 237, 0.3);
    transition: all 0.25s ease;
    white-space: nowrap;
  }
  .btn-primary:hover {
    background: var(--primary-600);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(124, 58, 237, 0.35);
  }
  .btn-primary:active {
    transform: scale(0.96);
  }
  .btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.6rem 1.4rem;
    border-radius: 9999px;
    border: 1px solid rgba(255, 255, 255, 0.45);
    transition: all 0.25s ease;
    white-space: nowrap;
  }
  .btn-outline:hover {
    background: rgba(255, 255, 255, 0.22);
    transform: translateY(-2px);
  }

  .hamburger {
    width: 42px;
    height: 42px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    border: none;
    background: transparent;
    border-radius: 10px;
    transition: background 0.2s;
  }
  .hamburger:hover { background: #F1F5F9; }
  .hamburger span {
    display: block;
    width: 20px;
    height: 2px;
    background: #334155;
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
  }
  .hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .hamburger.open span:nth-child(2) { opacity: 0; }
  .hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .mobile-menu {
    max-height: 0;
    overflow: hidden;
    background: #fff;
    border-radius: 0 0 1rem 1rem;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
    transition: max-height 0.35s ease;
  }
  .mobile-menu.open { max-height: 420px; }
  .mobile-menu a {
    display: block;
    padding: 0.85rem 1.5rem;
    font-weight: 500;
    color: var(--text-sub);
    border-top: 1px solid #F1F5F9;
    transition: background 0.2s, color 0.2s;
  }
  .mobile-menu a:hover { background: var(--bg-soft-purple); color: var(--primary-600); }
  .mobile-menu a.active { color: var(--primary-600); font-weight: 600; }
  .mobile-menu .btn-primary {
    margin: 1rem 1.5rem;
    justify-content: center;
  }

  /* ===== Breadcrumb ===== */
  .breadcrumb {
    padding: 1.2rem 0 0;
    font-size: 0.875rem;
    color: var(--text-weak);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    flex-wrap: wrap;
  }
  .breadcrumb a { color: var(--text-sub); transition: color 0.2s; }
  .breadcrumb a:hover { color: var(--primary-600); }
  .breadcrumb .current { color: var(--primary-600); font-weight: 500; }

  /* ===== Category Hero ===== */
  .category-hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-1.webp');
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    border-radius: 1.5rem;
    margin-top: 1.5rem;
    overflow: hidden;
    box-shadow: 0 12px 30px rgba(30, 27, 75, 0.25);
  }
  .category-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(118deg, rgba(30, 27, 75, 0.96), rgba(49, 46, 129, 0.88) 55%, rgba(124, 58, 237, 0.62));
    z-index: 1;
  }
  .category-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
      linear-gradient(rgba(255,255,255,0.12) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.12) 1px, transparent 1px);
    background-size: 44px 44px;
    opacity: 0.16;
    z-index: 1;
  }
  .category-hero .container {
    position: relative;
    z-index: 2;
    padding-top: 4.5rem;
    padding-bottom: 4.5rem;
  }
  .hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--cyan-light);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    background: rgba(34, 211, 238, 0.1);
    border: 1px solid rgba(34, 211, 238, 0.3);
    border-radius: 9999px;
    padding: 0.3rem 0.9rem;
    margin-bottom: 1.2rem;
  }
  .category-hero h1 {
    color: #fff;
    font-size: 2.6rem;
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 1.2rem;
  }
  .category-hero h1 span { color: var(--cyan-light); }
  .category-hero p {
    color: rgba(255, 255, 255, 0.76);
    font-size: 1.05rem;
    max-width: 44rem;
    margin: 0 0 1.8rem;
  }
  .hero-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    max-width: 42rem;
    margin-top: 1.8rem;
  }
  .hero-stat {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 1rem;
    padding: 0.8rem 1rem;
    text-align: center;
  }
  .hero-stat strong {
    display: block;
    color: #fff;
    font-size: 1.35rem;
    font-weight: 700;
    line-height: 1.3;
  }
  .hero-stat span {
    display: block;
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.78rem;
    margin-top: 0.15rem;
  }

  /* ===== Section ===== */
  .section { padding: 5rem 0; }
  .section-heading { margin-bottom: 2.5rem; max-width: 42rem; }
  .section-eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    color: var(--primary-500);
    background: var(--primary-100);
    border-radius: 9999px;
    padding: 0.25rem 0.8rem;
    margin-bottom: 0.85rem;
    text-transform: uppercase;
  }
  .section-heading h2 {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text-main);
    margin: 0;
  }
  .section-heading .section-desc {
    color: var(--text-sub);
    font-size: 1rem;
    margin-top: 0.8rem;
  }

  /* ===== News Card ===== */
  .news-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
  }
  .news-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
  }
  .news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--primary-100);
  }
  .news-card .card-cover {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: #F1F5F9;
  }
  .news-card .card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
  }
  .news-card:hover .card-cover img { transform: scale(1.04); }
  .card-tag {
    position: absolute;
    top: 0.8rem;
    left: 0.8rem;
    background: rgba(109, 40, 217, 0.9);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.7rem;
    border-radius: 9999px;
    backdrop-filter: blur(4px);
    transition: background 0.2s;
  }
  .news-card .card-body {
    padding: 1.25rem 1.25rem 1.1rem;
    display: flex;
    flex-direction: column;
    flex: 1;
  }
  .news-card .card-body h3 {
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1.45;
    color: var(--text-main);
    margin: 0 0 0.6rem;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.2s;
  }
  .news-card:hover .card-body h3 { color: var(--primary-600); }
  .news-card .card-body p {
    color: var(--text-sub);
    font-size: 0.875rem;
    line-height: 1.65;
    margin: 0 0 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  .news-card .card-meta {
    margin-top: auto;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-weak);
    font-size: 0.78rem;
    border-top: 1px solid #F1F5F9;
    padding-top: 0.8rem;
  }
  .news-card .card-meta .tag {
    background: var(--bg-soft-purple);
    color: var(--primary-600);
    border-radius: 9999px;
    padding: 0.1rem 0.55rem;
    font-weight: 500;
  }
  .news-card .card-meta .arrow {
    margin-left: auto;
    color: var(--primary-500);
    transition: transform 0.25s;
  }
  .news-card:hover .card-meta .arrow { transform: translateX(4px); }

  /* ===== Steps ===== */
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1.5rem;
    position: relative;
  }
  .steps-grid::before {
    content: '';
    position: absolute;
    top: 1.75rem;
    left: 8%;
    right: 8%;
    height: 2px;
    background-image: linear-gradient(90deg, var(--primary-200, #ddd6fe), var(--cyan));
    opacity: 0.5;
    border-radius: 2px;
  }
  .step-card {
    position: relative;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 1.2rem;
    padding: 1.5rem 1.25rem 1.4rem;
    box-shadow: var(--shadow-card);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
    z-index: 1;
  }
  .step-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
  }
  .step-num {
    width: 3rem;
    height: 3rem;
    margin: 0 auto 1rem;
    border-radius: 9999px;
    background: linear-gradient(135deg, var(--primary-500), var(--night-800));
    color: #fff;
    font-weight: 800;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 10px rgba(124, 58, 237, 0.25);
  }
  .step-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin: 0 0 0.35rem;
  }
  .step-card p {
    font-size: 0.85rem;
    color: var(--text-sub);
    margin: 0;
    line-height: 1.6;
  }

  /* ===== Rewards ===== */
  .rewards-section {
    background: linear-gradient(135deg, #1E1B4B, #312E81, #4338CA);
    border-radius: 1.5rem;
    padding: 3.5rem 2rem;
    overflow: hidden;
    position: relative;
  }
  .rewards-section::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    right: -80px;
    top: -80px;
    background: radial-gradient(circle, rgba(251, 191, 36, 0.25), transparent 70%);
    border-radius: 50%;
  }
  .rewards-title { color: #fff; }
  .rewards-title .section-eyebrow { background: rgba(251, 191, 36, 0.15); color: var(--gold-light); }
  .rewards-title .section-desc { color: rgba(255, 255, 255, 0.65); }
  .rewards-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 1rem;
  }
  .reward-card {
    position: relative;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 1.2rem;
    padding: 2rem 1.5rem;
    text-align: center;
    color: #fff;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
  }
  .reward-card:hover {
    transform: translateY(-4px);
    border-color: rgba(251, 191, 36, 0.5);
    box-shadow: 0 10px 35px rgba(0, 0, 0, 0.3);
  }
  .reward-card.featured {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(251, 191, 36, 0.55);
    box-shadow: 0 0 0 1px rgba(251, 191, 36, 0.15), 0 12px 35px rgba(0, 0, 0, 0.3);
    transform: scale(1.04);
  }
  .reward-card.featured:hover { transform: scale(1.06); }
  .reward-card .reward-icon {
    width: 3.2rem;
    height: 3.2rem;
    margin: 0 auto 1rem;
    border-radius: 9999px;
    background: rgba(251, 191, 36, 0.18);
    border: 1px solid rgba(251, 191, 36, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--gold-light);
  }
  .reward-card h3 { font-size: 1.2rem; font-weight: 700; margin: 0 0 0.4rem; }
  .reward-card .reward-condition {
    color: rgba(255, 255, 255, 0.55);
    font-size: 0.85rem;
    margin-bottom: 0.8rem;
  }
  .reward-card .reward-desc {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.75);
    line-height: 1.65;
    margin: 0;
  }

  /* ===== FAQ ===== */
  .faq-list { max-width: 48rem; margin: 0 auto; }
  .faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 1rem;
    margin-bottom: 0.9rem;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.03);
    transition: border-color 0.25s, box-shadow 0.25s;
  }
  .faq-item.open {
    border-color: var(--primary-100);
    box-shadow: 0 4px 16px rgba(124, 58, 237, 0.07);
  }
  .faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1.1rem 1.4rem;
    background: transparent;
    border: none;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-main);
    transition: color 0.2s;
  }
  .faq-question:hover { color: var(--primary-600); }
  .faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border-radius: 9999px;
    background: var(--primary-100);
    color: var(--primary-600);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 700;
    transition: transform 0.25s, background 0.25s, color 0.25s;
  }
  .faq-item.open .faq-icon {
    transform: rotate(45deg);
    background: var(--primary-600);
    color: #fff;
  }
  .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .faq-answer p {
    padding: 0 1.4rem 1.1rem;
    margin: 0;
    color: var(--text-sub);
    font-size: 0.9rem;
    line-height: 1.7;
  }

  /* ===== CTA ===== */
  .cta-banner {
    position: relative;
    background: linear-gradient(120deg, #1E1B4B, #312E81);
    border-radius: 1.5rem;
    overflow: hidden;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: 0 15px 40px rgba(30, 27, 75, 0.25);
  }
  .cta-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(34, 211, 238, 0.18), transparent 45%),
                radial-gradient(circle at 80% 70%, rgba(251, 191, 36, 0.15), transparent 40%);
  }
  .cta-banner .container { position: relative; z-index: 1; }
  .cta-banner h2 {
    color: #fff;
    font-size: 1.8rem;
    font-weight: 800;
    margin: 0 0 0.6rem;
  }
  .cta-banner p {
    color: rgba(255, 255, 255, 0.7);
    margin: 0 0 1.6rem;
    font-size: 1rem;
  }
  .cta-banner .btn-primary {
    padding: 0.85rem 2.4rem;
    font-size: 1.05rem;
    box-shadow: 0 8px 24px rgba(124, 58, 237, 0.45);
  }

  /* ===== Footer ===== */
  .site-footer {
    background: #020617;
    color: #94A3B8;
    padding: 4.5rem 0 0;
    margin-top: 5rem;
  }
  .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 2rem;
    padding-bottom: 3rem;
  }
  .footer-brand p {
    font-size: 0.9rem;
    line-height: 1.75;
    margin: 1.1rem 0 0;
    max-width: 22rem;
    color: #94A3B8;
  }
  .footer-heading {
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 1.1rem;
  }
  .footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.55rem;
  }
  .footer-links a {
    color: #94A3B8;
    font-size: 0.9rem;
    transition: color 0.2s, padding-left 0.2s;
  }
  .footer-links a:hover {
    color: #fff;
    padding-left: 4px;
  }
  .footer-contact {
    display: grid;
    gap: 0.8rem;
  }
  .footer-contact .item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: #94A3B8;
  }
  .footer-contact svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: #7C3AED;
  }
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1.3rem 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.8rem;
    flex-wrap: wrap;
    font-size: 0.8rem;
    color: #64748B;
  }

  /* ===== Responsive ===== */
  @media (max-width: 1024px) {
    .section { padding: 3.5rem 0; }
    .hero-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .steps-grid::before { display: none; }
    .steps-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .news-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .rewards-grid { grid-template-columns: 1fr; }
    .reward-card.featured { transform: none; }
    .reward-card.featured:hover { transform: translateY(-4px); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .category-hero h1 { font-size: 2.1rem; }
  }
  @media (max-width: 640px) {
    .section { padding: 2.8rem 0; }
    .category-hero .container { padding-top: 3rem; padding-bottom: 3rem; }
    .category-hero h1 { font-size: 1.8rem; }
    .hero-stats { grid-template-columns: 1fr 1fr; }
    .steps-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; text-align: center; }
    .section-heading h2 { font-size: 1.5rem; }
    .cta-banner h2 { font-size: 1.4rem; }
    .rewards-section { padding: 2.4rem 1.2rem; }
  }