/* roulang page: index */
:root{
    --primary:#4B2DE0;
    --accent:#FF2D78;
    --teal:#00D4C8;
    --bg-light:#F7F7FC;
    --bg-dark:#0E0A1F;
    --card-dark:#171230;
    --card-bg:#FFFFFF;
    --text-main:#1C1C2A;
    --text-secondary:#5E5E70;
    --border:#E6E6F0;
    --border-hover:#C9C9E0;
    --star:#FFB800;
    --radius-lg:20px;
    --radius-md:14px;
    --radius-sm:10px;
    --radius-pill:999px;
    --shadow:0 2px 8px rgba(14,10,31,0.06),0 8px 32px rgba(14,10,31,0.08);
    --shadow-hover:0 6px 16px rgba(14,10,31,0.12),0 16px 40px rgba(14,10,31,0.16);
    --grad-main:linear-gradient(90deg,#4B2DE0 0%,#FF2D78 100%);
    --grad-hero:linear-gradient(135deg,#0E0A1F 0%,#2A1668 55%,#4B2DE0 100%);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;background:var(--bg-light);color:var(--text-main);line-height:1.75;font-size:16px;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent)}
button{font-family:inherit;cursor:pointer}
input,textarea{font-family:inherit}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
section{position:relative}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.95);backdrop-filter:blur(12px);height:72px;display:flex;align-items:center;border-bottom:1px solid transparent;transition:box-shadow .25s ease}
.site-header.scrolled{box-shadow:0 2px 12px rgba(0,0,0,.06);border-bottom:1px solid var(--border)}
.header-inner{display:flex;align-items:center;justify-content:space-between;width:100%}
.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--text-main);letter-spacing:.5px}
.logo-icon{width:36px;height:36px;border-radius:10px;background:var(--grad-main);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.logo-icon svg{width:20px;height:20px;fill:#fff}
.nav-menu{display:flex;align-items:center;gap:6px;list-style:none;margin:0}
.nav-menu li a{display:block;padding:8px 14px;border-radius:var(--radius-pill);font-size:14px;font-weight:600;color:#333;transition:all .2s ease}
.nav-menu li a:hover{background:rgba(75,45,224,.08);color:var(--primary)}
.nav-menu li a.active{background:rgba(75,45,224,.1);color:var(--primary)}
.nav-menu li a.nav-download{margin-left:10px;background:var(--grad-main);color:#fff;padding:10px 22px;border-radius:var(--radius-pill);font-weight:700;box-shadow:0 4px 14px rgba(75,45,224,.28);transition:all .25s ease}
.nav-menu li a.nav-download:hover{box-shadow:0 6px 20px rgba(255,45,120,.35);transform:translateY(-2px)}
.hamburger{display:none;width:42px;height:42px;border:none;background:transparent;border-radius:12px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.hamburger span{display:block;width:22px;height:2px;background:var(--text-main);border-radius:2px;transition:all .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:fixed;top:72px;left:0;right:0;background:#fff;padding:20px 24px 28px;box-shadow:0 12px 32px rgba(0,0,0,.12);z-index:199;flex-direction:column;border-bottom-left-radius:20px;border-bottom-right-radius:20px}
.mobile-menu.open{display:flex}
.mobile-menu a{font-size:18px;line-height:44px;color:var(--text-main);font-weight:600;border-bottom:1px solid var(--border)}
.mobile-menu a:last-child{border-bottom:none}
.mobile-menu a.active{color:var(--primary)}
.mobile-menu .mobile-download{margin-top:16px;background:var(--grad-main);color:#fff;border-radius:var(--radius-pill);text-align:center;padding:12px;font-weight:700}

/* Hero */
.hero{background:var(--grad-hero);color:#fff;padding:96px 0 120px;overflow:hidden}
.hero-bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;opacity:.18;pointer-events:none}
.hero-content{position:relative;z-index:2}
.hero .hero-title{font-size:44px;line-height:1.3;font-weight:800;margin:0 0 16px;letter-spacing:.5px}
.hero .hero-sub{font-size:18px;line-height:1.7;color:rgba(255,255,255,.85);max-width:560px;margin:0 0 32px;font-weight:400}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:40px}
.btn{-webkit-appearance:none;appearance:none;border:none;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:700;border-radius:var(--radius-pill);transition:all .25s ease;letter-spacing:.3px}
.btn-arrow svg{width:18px;height:18px;fill:currentColor;transition:transform .25s ease}
.btn:hover .btn-arrow svg{transform:translateX(4px)}
.btn-primary{background:var(--grad-main);color:#fff;padding:16px 42px;height:52px;box-shadow:0 6px 24px rgba(75,45,224,.35)}
.btn-primary:hover{box-shadow:0 8px 32px rgba(255,45,120,.4);transform:translateY(-2px);color:#fff}
.btn-outline{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.6);padding:14px 36px;height:52px}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tag{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;font-size:12px;font-weight:600;padding:6px 14px;border-radius:var(--radius-pill)}
.hero-visual{position:relative;height:100%;min-height:360px;display:flex;align-items:center;justify-content:center}
.hero-card{width:100%;max-width:400px;background:rgba(23,18,48,.75);border:1px solid rgba(255,255,255,.12);border-radius:24px;padding:32px 28px;backdrop-filter:blur(8px)}
.hero-card-img{border-radius:16px;overflow:hidden;margin-bottom:24px;background:#221a4a}
.hero-card-img img{width:100%;height:200px;object-fit:cover}
.hero-card-stats{display:flex;gap:12px;margin-bottom:16px}
.hero-card-stat{flex:1;background:rgba(75,45,224,.2);border-radius:12px;padding:12px;text-align:center}
.hero-card-stat .num{font-size:22px;font-weight:800;color:#fff;font-variant-numeric:tabular-nums}
.hero-card-stat .lbl{font-size:11px;color:rgba(255,255,255,.7);margin-top:2px}
.hero-float-badge{position:absolute;background:rgba(255,255,255,.95);border-radius:14px;padding:10px 16px;box-shadow:var(--shadow-hover);display:flex;align-items:center;gap:12px}
.hero-float-badge .fb-icon{width:32px;height:32px;border-radius:8px;display:flex;align-items:center;justify-content:center}
.hero-float-badge .fb-icon svg{width:16px;height:16px;fill:#fff}
.hero-float-badge .fb-text .fb-num{font-size:16px;font-weight:800;color:var(--text-main);line-height:1.2;font-variant-numeric:tabular-nums}
.hero-float-badge .fb-text .fb-label{font-size:11px;color:var(--text-secondary)}
.fb-1{top:10%;left:0}
.fb-2{bottom:14%;right:0}
.hero-wave{position:absolute;bottom:-1px;left:0;right:0;z-index:3}
.hero-wave svg{display:block;width:100%;height:80px}

/* 数据徽章条 */
.stats-strip{padding:64px 0;background:var(--bg-light)}
.stat-card{background:#fff;border-radius:var(--radius-lg);padding:28px 24px;text-align:center;box-shadow:var(--shadow);transition:transform .25s ease,box-shadow .25s ease;height:100%}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.stat-value{font-size:36px;font-weight:800;color:var(--text-main);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-value .unit{font-size:18px;color:var(--text-secondary);margin-left:2px;font-weight:700}
.stat-label{font-size:14px;color:var(--text-secondary);margin-top:8px}
.stat-trend{display:inline-flex;align-items:center;gap:4px;margin-top:10px;font-size:12px;font-weight:700;color:var(--teal);background:rgba(0,212,200,.1);padding:4px 12px;border-radius:var(--radius-pill)}
.stat-trend svg{width:14px;height:14px;fill:var(--teal)}

/* 区块标题 */
.section{padding:96px 0}
.section-alt{background:var(--bg-light)}
.section-head{text-align:center;max-width:760px;margin:0 auto 56px}
.section-head .eyebrow{display:inline-block;font-size:13px;font-weight:700;color:var(--primary);background:rgba(75,45,224,.08);padding:6px 16px;border-radius:var(--radius-pill);margin-bottom:16px;letter-spacing:.5px}
.section-head h2{font-size:32px;line-height:1.4;font-weight:800;margin:0 0 16px;color:var(--text-main)}
.section-head p{font-size:16px;color:var(--text-secondary);margin:0;line-height:1.75}
.section-dark{background:var(--bg-dark);color:#fff}
.section-dark .section-head h2{color:#fff}
.section-dark .section-head p{color:rgba(255,255,255,.7)}

/* 功能亮点 */
.feature-card{background:#fff;border-radius:var(--radius-lg);padding:32px 28px;box-shadow:var(--shadow);transition:all .25s ease;height:100%;display:flex;flex-direction:column;position:relative;overflow:hidden}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.feature-card .f-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px}
.feature-card .f-icon svg{width:26px;height:26px;fill:#fff}
.feature-card h3{font-size:20px;font-weight:700;margin:0 0 10px;color:var(--text-main)}
.feature-card p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin:0}
.feature-cover{padding:0;overflow:hidden;position:relative}
.feature-cover img{width:100%;height:100%;object-fit:cover;min-height:240px;transition:transform .5s ease}
.feature-cover:hover img{transform:scale(1.05)}
.feature-cover .cover-text{position:absolute;inset:auto 0 0 0;background:linear-gradient(180deg,transparent,rgba(14,10,31,.85));color:#fff;padding:28px 24px 24px}
.feature-cover .cover-text h3{color:#fff;margin-bottom:6px}
.feature-cover .cover-text p{color:rgba(255,255,255,.82);font-size:13px;line-height:1.6}
.mt-sm{margin-top:18px}

/* Orbit 轮播 */
.orbit-section{background:var(--bg-dark);overflow:hidden}
.orbit-wrap{border-radius:24px;overflow:hidden;background:rgba(23,18,48,.5);box-shadow:0 16px 60px rgba(0,0,0,.5)}
.orbit-slide img{width:100%;height:400px;object-fit:cover}
.orbit-caption{text-align:center;color:#fff;font-size:16px;font-weight:600;padding:20px 24px;margin:0}
.orbit-caption span{display:block;font-size:13px;color:rgba(255,255,255,.6);font-weight:400;margin-top:4px}
.orbit-bullets{display:flex;justify-content:center;gap:8px;padding:20px 0;margin:0;list-style:none}
.orbit-bullets button{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.25);border:none;padding:0;transition:all .25s ease}
.orbit-bullets button.is-active{background:var(--accent);transform:scale(1.3)}
.orbit-previous,.orbit-next{position:absolute;top:50%;transform:translateY(-50%);z-index:10;width:44px;height:44px;border-radius:50%;border:2px solid var(--primary);background:#fff;color:var(--primary);font-size:18px;display:flex;align-items:center;justify-content:center;transition:all .25s ease}
.orbit-previous:hover,.orbit-next:hover{background:rgba(75,45,224,.1);color:var(--primary)}
.orbit-previous{left:16px}
.orbit-next{right:16px}
.orbit-slide{list-style:none;position:relative}

/* 系统要求 */
.sys-card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden;height:100%;transition:transform .25s ease,box-shadow .25s ease}
.sys-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.sys-head{background:rgba(75,45,224,.06);padding:28px 28px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--border)}
.sys-head .s-icon{width:44px;height:44px;border-radius:12px;background:var(--grad-main);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.sys-head .s-icon svg{width:22px;height:22px;fill:#fff}
.sys-head h3{margin:0;font-size:20px;font-weight:700;color:var(--text-main)}
.sys-head span{font-size:12px;color:var(--text-secondary);font-weight:400}
.sys-list{list-style:none;margin:0;padding:8px 0}
.sys-list li{display:flex;justify-content:space-between;align-items:center;padding:18px 28px;border-bottom:1px solid var(--border);font-size:14px}
.sys-list li:last-child{border-bottom:none}
.sys-list .k{color:var(--text-secondary)}
.sys-list .v{font-weight:700;color:var(--text-main);font-variant-numeric:tabular-nums}
.sys-list .v-badge{background:rgba(75,45,224,.08);color:var(--primary);padding:4px 14px;border-radius:var(--radius-sm);font-size:13px;font-weight:700}

/* 评价墙 */
.review-card{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:28px 24px;height:100%;display:flex;flex-direction:column;transition:transform .25s ease,box-shadow .25s ease}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.review-stars{display:flex;gap:3px;margin-bottom:16px}
.review-stars svg{width:18px;height:18px;fill:var(--star)}
.review-stars .empty{fill:var(--border)}
.review-text{font-size:15px;line-height:1.8;color:var(--text-main);margin:0 0 20px;flex:1}
.review-user{display:flex;align-items:center;gap:12px}
.review-avatar{width:40px;height:40px;border-radius:50%;background:var(--grad-main);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px;flex-shrink:0}
.review-user .name{font-size:14px;font-weight:700;color:var(--text-main)}
.review-user .time{font-size:12px;color:var(--text-secondary)}
.review-card.mt{margin-top:24px}

/* 最新动态 CMS 列表 */
.news-card{background:#fff;border-radius:16px;box-shadow:var(--shadow);padding:22px;display:flex;gap:20px;align-items:center;transition:transform .25s ease,box-shadow .25s ease;position:relative;overflow:hidden;margin-bottom:16px}
.news-card::before{content:'';position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--primary);border-radius:0 4px 4px 0;opacity:0;transition:opacity .25s ease}
.news-card:hover::before{opacity:1}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover)}
.news-datebox{width:72px;height:72px;background:rgba(75,45,224,.08);border-radius:14px;display:flex;flex-direction:column;align-items:center;justify-content:center;flex-shrink:0}
.news-datebox .date-time{font-size:14px;font-weight:700;color:var(--primary);text-align:center;line-height:1.3;font-variant-numeric:tabular-nums}
.news-info{flex:1;min-width:0}
.news-title{font-size:18px;font-weight:700;margin:0 0 6px;color:var(--text-main)}
.news-title a{color:var(--text-main)}
.news-title a:hover{color:var(--primary)}
.news-summary{font-size:14px;color:var(--text-secondary);line-height:1.6;margin:0 0 10px;overflow:hidden;text-overflow:ellipsis;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px}
.news-cat{display:inline-block;background:rgba(75,45,224,.08);color:var(--primary);font-size:12px;font-weight:600;padding:4px 14px;border-radius:var(--radius-pill)}
.news-link{font-size:13px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:4px;transition:gap .2s ease}
.news-link:hover{gap:8px;color:var(--accent)}
.news-empty{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);padding:60px 24px;text-align:center;color:var(--text-secondary)}
.news-empty svg{width:48px;height:48px;fill:var(--border);margin:0 auto 16px;display:block}
.news-empty p{margin:0;font-size:16px}

/* 下载 + 表单 */
.download-zone{background:linear-gradient(180deg,#0E0A1F 0%,#171230 100%);padding:96px 0;color:#fff}
.download-card{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);padding:32px 28px;height:100%;transition:border-color .25s ease,background .25s ease}
.download-card:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.2)}
.download-btn-group{display:flex;flex-direction:column;gap:16px;margin-top:28px}
.download-btn{display:flex;align-items:center;gap:16px;padding:18px 24px;border-radius:16px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.08);color:#fff;font-size:16px;font-weight:700;transition:all .25s ease}
.download-btn:hover{background:rgba(75,45,224,.4);border-color:var(--primary);color:#fff;transform:translateY(-2px)}
.download-btn svg{width:28px;height:28px;fill:#fff;flex-shrink:0}
.download-btn small{display:block;font-size:11px;color:rgba(255,255,255,.6);font-weight:400;line-height:1.4}
.form-card{background:#fff;border-radius:var(--radius-lg);padding:32px 28px;color:var(--text-main);box-shadow:0 20px 60px rgba(0,0,0,.3)}
.form-card h3{margin:0 0 8px;font-size:22px;font-weight:800}
.form-card .form-sub{font-size:14px;color:var(--text-secondary);margin:0 0 24px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:14px;color:var(--text-secondary);margin-bottom:8px;font-weight:600}
.form-group input{width:100%;height:46px;border-radius:12px;border:1px solid #E0E0EA;padding:0 16px;font-size:15px;color:var(--text-main);transition:border-color .2s ease,box-shadow .2s ease;outline:none;background:#fff}
.form-group input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(75,45,224,.15)}
.form-error{color:var(--accent);font-size:12px;margin-top:6px;display:none;font-weight:600}
.btn-submit{width:100%;background:var(--grad-main);color:#fff;border:none;height:50px;border-radius:var(--radius-pill);font-size:16px;font-weight:700;letter-spacing:.5px;transition:all .25s ease;cursor:pointer;box-shadow:0 6px 20px rgba(75,45,224,.3)}
.btn-submit:hover{box-shadow:0 8px 28px rgba(255,45,120,.4);transform:translateY(-2px)}
.form-tip{font-size:12px;color:var(--text-secondary);text-align:center;margin-top:16px}

/* FAQ */
.faq-wrap{max-width:760px;margin:0 auto}
.accordion{list-style:none;margin:0;padding:0;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow);overflow:hidden}
.accordion-item{border-bottom:1px solid var(--border)}
.accordion-item:last-child{border-bottom:none}
.accordion-title{padding:22px 28px;font-size:16px;font-weight:600;color:var(--text-main);display:flex;justify-content:space-between;align-items:center;cursor:pointer;transition:background .2s ease;background:transparent}
.accordion-title:hover{background:rgba(75,45,224,.04);color:var(--primary)}
.accordion-title svg{width:16px;height:16px;fill:var(--text-secondary);transition:transform .3s ease;flex-shrink:0}
.accordion-item.is-active .accordion-title svg{transform:rotate(180deg)}
.accordion-content{display:none;padding:0 28px 24px;font-size:15px;color:var(--text-secondary);line-height:1.8;max-width:680px}
.accordion-item.is-active .accordion-content{display:block}

/* CTA 重申区 */
.cta-section{padding:64px 0}
.cta-card{background:linear-gradient(135deg,#171230 0%,#2A1668 55%,#4B2DE0 100%);border-radius:24px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}
.cta-card::before{content:'';position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;opacity:.15;pointer-events:none}
.cta-card h2{color:#fff;font-size:32px;font-weight:800;margin:0 0 16px;position:relative;z-index:2}
.cta-card p{color:rgba(255,255,255,.85);font-size:16px;max-width:560px;margin:0 auto 36px;line-height:1.7;position:relative;z-index:2}

/* 页脚 */
.site-footer{background:var(--bg-dark);color:#fff;padding:64px 0 0}
.footer-brand p{color:rgba(255,255,255,.6);font-size:14px;line-height:1.8;margin:16px 0 24px;max-width:320px}
.footer-social{display:flex;gap:12px}
.footer-social a{width:40px;height:40px;border-radius:10px;border:1px solid rgba(255,255,255,.12);display:flex;align-items:center;justify-content:center;transition:all .25s ease}
.footer-social a svg{width:18px;height:18px;fill:rgba(255,255,255,.7)}
.footer-social a:hover{background:rgba(75,45,224,.3);border-color:var(--primary)}
.footer-title{font-size:16px;font-weight:700;color:#fff;margin-bottom:20px;position:relative;padding-bottom:12px}
.footer-title::after{content:'';position:absolute;bottom:0;left:0;width:28px;height:3px;background:var(--grad-main);border-radius:3px}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin-bottom:12px}
.footer-links a{color:rgba(255,255,255,.6);font-size:14px;transition:color .2s ease}
.footer-links a:hover{color:var(--primary)}
.footer-contact-list{list-style:none;margin:0;padding:0}
.footer-contact-list li{display:flex;align-items:flex-start;gap:10px;color:rgba(255,255,255,.6);font-size:14px;margin-bottom:16px}
.footer-contact-list svg{width:16px;height:16px;fill:rgba(255,255,255,.5);flex-shrink:0;margin-top:4px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:48px;padding:24px 0;text-align:center;color:rgba(255,255,255,.4);font-size:13px}
.footer-bottom a{color:rgba(255,255,255,.6)}

/* 响应式 */
@media screen and (max-width:1024px){
    .hero-title{font-size:36px}
    .hero{padding:80px 0 100px}
    .section{padding:64px 0}
    .hero-visual{margin-top:48px}
    .hero-float-badge.fb-1{left:0}
    .hero-float-badge.fb-2{right:0}
}
@media screen and (max-width:768px){
    .nav-menu{display:none}
    .hamburger{display:flex}
    .hero-title{font-size:32px}
    .hero-sub{font-size:16px}
    .hero{padding:64px 0 96px}
    .section{padding:48px 0}
    .section-head h2{font-size:24px}
    .section-head{margin-bottom:40px}
    .stat-value{font-size:30px}
    .sys-head{padding:24px 20px}
    .sys-list li{padding:16px 20px}
    .news-card{flex-direction:column;align-items:flex-start;padding:20px}
    .news-datebox{width:64px;height:60px}
    .cta-card{padding:48px 24px}
    .cta-card h2{font-size:24px}
    .footer-bottom{font-size:12px}
}
@media screen and (max-width:520px){
    .container{padding:0 20px}
    .hero-title{font-size:26px}
    .hero-sub{font-size:15px}
    .hero-cta{flex-direction:column;width:100%}
    .hero-cta .btn{width:100%}
    .hero-visual{min-height:280px}
    .hero-card{padding:20px 16px}
    .hero-card-img img{height:150px}
    .hero-float-badge{transform:scale(.85)}
    .fb-1{top:0;left:-8px}
    .fb-2{bottom:8%;right:-8px}
    .orbit-slide img{height:220px}
    .section-head h2{font-size:22px}
    .feature-card{padding:24px 20px}
    .feature-card h3{font-size:18px}
    .download-btn-group{flex-direction:column}
    .form-card{padding:24px 20px}
    .accordion-title{padding:18px 20px}
    .accordion-content{padding:0 20px 20px}
}

/* roulang page: category1 */
:root {
  --primary: #4B2DE0;
  --accent: #FF2D78;
  --cyan: #00D4C8;
  --bg-light: #F7F7FC;
  --bg-dark: #0E0A1F;
  --bg-card-dark: #171230;
  --white: #FFFFFF;
  --text-main: #1C1C2A;
  --text-sub: #5E5E70;
  --border: #E6E6F0;
  --border-hover: #C9C9E0;
  --gold: #FFB800;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-pill: 999px;
  --shadow: 0 2px 8px rgba(14,10,31,0.06), 0 8px 32px rgba(14,10,31,0.08);
  --shadow-hover: 0 6px 16px rgba(14,10,31,0.12), 0 16px 40px rgba(14,10,31,0.16);
  --gradient-hero: linear-gradient(135deg, #0E0A1F 0%, #2A1668 55%, #4B2DE0 100%);
  --gradient-btn: linear-gradient(90deg, #4B2DE0 0%, #FF2D78 100%);
  --gradient-dark-card: linear-gradient(135deg, #171230 0%, #1E1645 100%);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
  background: var(--white);
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg {
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 96px 0;
}

.section-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-sub);
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
  line-height: 1.75;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--white);
  height: 72px;
  display: flex;
  align-items: center;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.logo:hover {
  color: var(--primary);
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-btn);
  border-radius: 10px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.logo-icon svg {
  width: 22px;
  height: 22px;
  fill: #fff;
}

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

.nav-menu a {
  color: #333;
  font-size: 15px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  transition: color 0.2s, background 0.2s;
}

.nav-menu a:hover {
  color: var(--primary);
  background: rgba(75, 45, 224, 0.06);
}

.nav-menu a.active {
  color: var(--primary);
  font-weight: 700;
}

.nav-menu a.nav-download {
  background: var(--gradient-btn);
  color: #fff;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 16px rgba(255, 45, 120, 0.25);
}

.nav-menu a.nav-download:hover {
  box-shadow: 0 6px 20px rgba(255, 45, 120, 0.35);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 110;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Page Hero ===== */
.page-hero {
  background: var(--bg-light);
  padding: 72px 0 56px;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: "";
  position: absolute;
  right: -10%;
  top: -60%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(75, 45, 224, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.page-hero-inner {
  display: flex;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
}

.page-hero-icon {
  width: 72px;
  height: 72px;
  background: var(--gradient-btn);
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(75, 45, 224, 0.3);
}

.page-hero-icon svg {
  width: 36px;
  height: 36px;
  fill: #fff;
}

.page-hero-content h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-main);
  margin-bottom: 12px;
}

.page-hero-content p {
  font-size: 17px;
  color: var(--text-sub);
  max-width: 640px;
  line-height: 1.75;
}

/* ===== Stats Strip ===== */
.stats-strip {
  background: var(--white);
  padding: 40px 0;
  border-bottom: 1px solid var(--border);
}

.stat-card {
  background: rgba(75, 45, 224, 0.06);
  border-radius: 16px;
  padding: 24px 20px;
  text-align: center;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  height: 100%;
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  background: rgba(75, 45, 224, 0.08);
}

.stat-number {
  font-size: 32px;
  font-weight: 800;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.stat-trend {
  color: var(--cyan);
  font-size: 14px;
  font-weight: 700;
  margin-left: 6px;
}

.stat-label {
  font-size: 13px;
  color: var(--text-sub);
  margin-top: 8px;
  font-weight: 500;
}

/* ===== Guide Cards ===== */
.guide-section {
  background: var(--bg-light);
}

.guide-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.guide-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.guide-card-cover {
  position: relative;
  height: 180px;
  overflow: hidden;
  background-size: cover;
  background-position: center;
}

.guide-card-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.guide-card:hover .guide-card-cover img {
  transform: scale(1.05);
}

.guide-card-cover .tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(14, 10, 31, 0.65);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.guide-card-body {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.guide-card-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
  line-height: 1.5;
}

.guide-card-body p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  flex: 1;
}

.guide-card-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.guide-card-list li {
  font-size: 14px;
  color: var(--text-sub);
  padding: 6px 0;
  position: relative;
  padding-left: 22px;
  line-height: 1.6;
}

.guide-card-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
}

.guide-card-body .card-link {
  margin-top: 20px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}

.guide-card-body .card-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  transition: transform 0.25s ease;
}

.guide-card-body .card-link:hover svg {
  transform: translateX(4px);
}

/* ===== Why Choice ===== */
.why-section {
  background: var(--white);
}

.why-card {
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  height: 100%;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid var(--border);
}

.why-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--border-hover);
}

.why-icon {
  width: 56px;
  height: 56px;
  background: rgba(75, 45, 224, 0.08);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.why-icon svg {
  width: 28px;
  height: 28px;
  fill: var(--primary);
}

.why-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-main);
}

.why-card p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ===== Scenario Dark ===== */
.scenario-section {
  background: var(--bg-dark);
  position: relative;
  overflow: hidden;
}

.scenario-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  opacity: 0.15;
}

.scenario-section .section-title,
.scenario-section .section-subtitle {
  color: #fff;
  position: relative;
  z-index: 2;
}

.scenario-section .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.scenario-grid {
  position: relative;
  z-index: 2;
}

.scenario-card {
  background: rgba(23, 18, 48, 0.8);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  height: 100%;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.scenario-card:hover {
  transform: translateY(-4px);
  border-color: rgba(75, 45, 224, 0.5);
}

.scenario-card .scenario-icon {
  width: 48px;
  height: 48px;
  background: rgba(75, 45, 224, 0.35);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.scenario-card .scenario-icon svg {
  width: 24px;
  height: 24px;
  fill: #fff;
}

.scenario-card h3 {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.scenario-card p {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

/* ===== Path Flow ===== */
.flow-section {
  background: var(--bg-light);
}

.flow-step {
  text-align: center;
  position: relative;
  padding: 24px 16px;
}

.flow-step-number {
  width: 44px;
  height: 44px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 18px;
  font-weight: 800;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 6px 16px rgba(255, 45, 120, 0.3);
}

.flow-step h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-main);
}

.flow-step p {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.6;
  max-width: 200px;
  margin: 0 auto;
}

.flow-arrow {
  position: absolute;
  right: -14px;
  top: 38px;
  color: var(--primary);
  opacity: 0.4;
  font-size: 20px;
  z-index: 2;
}

/* ===== Tag Cloud ===== */
.tags-section {
  background: var(--white);
  padding: 64px 0;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}

.tag-chip {
  background: var(--bg-light);
  border: 1px solid var(--border);
  color: var(--text-main);
  font-size: 14px;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  transition: all 0.25s ease;
  cursor: default;
}

.tag-chip:hover {
  background: rgba(75, 45, 224, 0.06);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--bg-light);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  box-shadow: 0 1px 4px rgba(14, 10, 31, 0.04);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.faq-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow);
}

.faq-item.active {
  border-color: rgba(75, 45, 224, 0.4);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 24px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  transition: color 0.2s;
}

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

.faq-arrow {
  width: 20px;
  height: 20px;
  fill: var(--text-sub);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
  fill: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 24px;
  color: var(--text-sub);
  font-size: 15px;
  line-height: 1.75;
  max-width: 680px;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding: 0 24px 20px;
}

/* ===== CTA ===== */
.cta-section {
  background: var(--white);
  padding: 80px 0;
}

.cta-card {
  background: var(--gradient-hero);
  border-radius: 24px;
  padding: 56px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: "";
  position: absolute;
  top: -40%;
  left: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255, 45, 120, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.cta-card::after {
  content: "";
  position: absolute;
  bottom: -40%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0, 212, 200, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.cta-card h2 {
  color: #fff;
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 12px;
  position: relative;
  z-index: 2;
}

.cta-card p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 16px;
  margin-bottom: 32px;
  position: relative;
  z-index: 2;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--gradient-btn);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  padding: 16px 40px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(255, 45, 120, 0.35);
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
  position: relative;
  z-index: 2;
}

.cta-btn:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 30px rgba(255, 45, 120, 0.45);
  filter: brightness(1.05);
  color: #fff;
}

.cta-btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
  transition: transform 0.25s ease;
}

.cta-btn:hover svg {
  transform: translateX(4px);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 64px 0 32px;
  font-size: 14px;
}

.site-footer .logo {
  color: #fff;
  margin-bottom: 16px;
}

.site-footer .logo:hover {
  color: var(--accent);
}

.site-footer p {
  line-height: 1.75;
  margin-bottom: 20px;
  max-width: 360px;
  font-size: 14px;
}

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

.footer-social a {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.25s, transform 0.25s;
}

.footer-social a:hover {
  background: rgba(75, 45, 224, 0.6);
  transform: translateY(-3px);
}

.footer-social svg {
  width: 20px;
  height: 20px;
  fill: #fff;
}

.footer-title {
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.2s;
}

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

.footer-contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 14px;
}

.footer-contact-list svg {
  width: 18px;
  height: 18px;
  fill: rgba(255, 255, 255, 0.5);
  flex-shrink: 0;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Responsive ===== */
@media screen and (max-width: 1024px) {
  section {
    padding: 64px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .page-hero-content h1 {
    font-size: 30px;
  }

  .flow-arrow {
    display: none;
  }
}

@media screen and (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  section {
    padding: 48px 0;
  }

  .section-title {
    font-size: 24px;
  }

  .section-subtitle {
    font-size: 15px;
    margin-bottom: 32px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-header {
    height: 64px;
  }

  .logo {
    font-size: 18px;
  }

  .logo-icon {
    width: 32px;
    height: 32px;
  }

  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px 32px;
    gap: 4px;
    box-shadow: 0 12px 32px rgba(14, 10, 31, 0.12);
    border-radius: 0 0 20px 20px;
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 105;
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-menu a {
    width: 100%;
    font-size: 17px;
    padding: 12px 16px;
    border-radius: 12px;
  }

  .nav-menu a.nav-download {
    margin-top: 12px;
    text-align: center;
    justify-content: center;
  }

  .page-hero {
    padding: 48px 0 40px;
  }

  .page-hero-inner {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }

  .page-hero-content p {
    margin: 0 auto;
    font-size: 15px;
  }

  .page-hero-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
  }

  .page-hero-icon svg {
    width: 28px;
    height: 28px;
  }

  .stat-card {
    margin-bottom: 16px;
  }

  .stat-number {
    font-size: 28px;
  }

  .guide-card {
    margin-bottom: 20px;
  }

  .why-card {
    margin-bottom: 16px;
  }

  .scenario-card {
    margin-bottom: 16px;
    padding: 24px 20px;
  }

  .flow-step {
    padding: 16px;
  }

  .cta-card {
    padding: 40px 24px;
    border-radius: 20px;
  }

  .cta-card h2 {
    font-size: 24px;
  }

  .faq-question {
    font-size: 15px;
    padding: 16px 16px;
  }

  .faq-item.active .faq-answer {
    padding: 0 16px 16px;
  }

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

  .site-footer .columns {
    margin-bottom: 28px;
  }

  .footer-bottom {
    margin-top: 32px;
  }
}

@media screen and (max-width: 520px) {
  .page-hero-content h1 {
    font-size: 24px;
  }

  .section-title {
    font-size: 22px;
  }

  .cta-btn {
    width: 100%;
    justify-content: center;
    padding: 14px 20px;
  }

  .faq-answer {
    font-size: 14px;
  }
}

/* roulang page: category2 */
:root {
            --primary: #4B2DE0;
            --accent: #FF2D78;
            --cyan: #00D4C8;
            --bg-light: #F7F7FC;
            --bg-dark: #0E0A1F;
            --bg-card-dark: #171230;
            --text-main: #1C1C2A;
            --text-muted: #5E5E70;
            --border-color: #E6E6F0;
            --border-hover: #C9C9E0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-pill: 999px;
            --shadow-default: 0 2px 8px rgba(14,10,31,0.06), 0 8px 32px rgba(14,10,31,0.08);
            --shadow-hover: 0 6px 16px rgba(14,10,31,0.12), 0 16px 40px rgba(14,10,31,0.16);
            --gradient-main: linear-gradient(90deg, #4B2DE0 0%, #FF2D78 100%);
            --gradient-hero: linear-gradient(135deg, #0E0A1F 0%, #2A1668 55%, #4B2DE0 100%);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: #ffffff;
            font-variant-numeric: tabular-nums;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        a:hover {
            color: var(--accent);
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        .section-header {
            text-align: center;
            margin-bottom: 56px;
        }

        .section-header h2 {
            font-size: 32px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .section-header p {
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
        }

        .section-eyebrow {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(75, 45, 224, 0.08);
            border-radius: var(--radius-pill);
            padding: 6px 16px;
            margin-bottom: 12px;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #ffffff;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
            height: 72px;
            display: flex;
            align-items: center;
        }

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

        .logo {
            display: flex;
            align-items: center;
            font-size: 24px;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo .logo-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient-main);
            margin-right: 10px;
            flex-shrink: 0;
        }

        .logo .logo-icon svg {
            width: 22px;
            height: 22px;
            fill: #fff;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 2px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-menu li a {
            padding: 8px 14px;
            font-size: 15px;
            font-weight: 500;
            color: #333;
            border-radius: var(--radius-pill);
            transition: color 0.25s ease, background 0.25s ease;
            position: relative;
        }

        .nav-menu li a:hover {
            color: var(--primary);
            background: rgba(75, 45, 224, 0.06);
        }

        .nav-menu li a.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(75, 45, 224, 0.08);
        }

        .nav-menu li a.nav-download {
            background: var(--gradient-main);
            color: #ffffff;
            padding: 10px 22px;
            font-weight: 600;
            border-radius: var(--radius-pill);
            box-shadow: 0 4px 14px rgba(255, 45, 120, 0.3);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .nav-menu li a.nav-download:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 45, 120, 0.42);
            color: #ffffff;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 8px;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        /* ===== Page Hero ===== */
        .page-hero {
            background: var(--gradient-hero);
            position: relative;
            padding: 64px 0 80px;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

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

        .page-hero h1 {
            font-size: 44px;
            line-height: 1.3;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .page-hero h1 .highlight {
            background: var(--gradient-main);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero .hero-description {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin-bottom: 28px;
        }

        .page-hero .hero-tags {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .hero-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(6px);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            background: var(--bg-light);
            padding: 14px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .breadcrumb {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 6px;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.25s ease;
        }

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

        .breadcrumb .sep {
            color: #B0B0BF;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ===== Stats Bar ===== */
        .stats-bar {
            background: #ffffff;
            border-bottom: 1px solid var(--border-color);
            padding: 32px 0;
            box-shadow: 0 4px 20px rgba(14, 10, 31, 0.03);
        }

        .stat-card {
            text-align: center;
            padding: 20px 16px;
            background: rgba(75, 45, 224, 0.03);
            border-radius: var(--radius-lg);
            border: 1px solid transparent;
            transition: all 0.3s ease;
            height: 100%;
        }

        .stat-card:hover {
            border-color: var(--border-hover);
            background: rgba(75, 45, 224, 0.04);
            transform: translateY(-4px);
            box-shadow: var(--shadow-default);
            border-color: var(--primary);
        }

        .stat-number {
            font-size: 38px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-number .trend {
            display: inline-block;
            font-size: 18px;
            color: var(--cyan);
            vertical-align: middle;
            margin-left: 4px;
        }

        .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ===== Content Cards ===== */
        .topic-article {
            background: var(--bg-light);
        }

        .card-grid {
            display: flex;
            flex-wrap: wrap;
            margin: -12px;
        }

        .card-grid .columns {
            padding: 12px;
        }

        .content-card {
            background: #ffffff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .content-card .card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--bg-card-dark);
        }

        .content-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .content-card:hover .card-img img {
            transform: scale(1.04);
        }

        .content-card .card-img .card-badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(14, 10, 31, 0.7);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
            backdrop-filter: blur(6px);
        }

        .content-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .content-card h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .content-card p {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-muted);
            flex: 1;
        }

        .card-features {
            list-style: none;
            padding: 0;
            margin: 16px 0 0;
            border-top: 1px solid var(--border-color);
            padding-top: 16px;
        }

        .card-features li {
            display: flex;
            gap: 8px;
            align-items: center;
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .card-features li::before {
            content: "";
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .card-footer-link {
            margin-top: 20px;
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .card-footer-link svg {
            width: 16px;
            height: 16px;
            transition: transform 0.25s ease;
        }

        .card-footer-link:hover svg {
            transform: translateX(4px);
        }

        /* ===== How it works ===== */
        .how-it-works {
            background: #ffffff;
        }

        .steps-row {
            display: flex;
            flex-wrap: wrap;
            margin: -12px;
        }

        .steps-row .columns {
            padding: 12px;
        }

        .step-item {
            background: var(--bg-light);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            height: 100%;
            position: relative;
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-default);
            background: #ffffff;
            border: 1px solid var(--border-color);
        }

        .step-number {
            font-size: 32px;
            font-weight: 800;
            color: rgba(75, 45, 224, 0.2);
            line-height: 1;
            margin-bottom: 16px;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
        }

        /* ===== Tournament Panel ===== */
        .tournament-panel {
            background: var(--bg-dark);
            position: relative;
            overflow: hidden;
        }

        .tournament-panel::after {
            content: "";
            position: absolute;
            top: -30%;
            right: -10%;
            width: 60%;
            height: 60%;
            background: radial-gradient(circle, rgba(75, 45, 224, 0.2), transparent 70%);
            pointer-events: none;
        }

        .tournament-panel .section-header h2 {
            color: #fff;
        }

        .tournament-panel .section-header p {
            color: rgba(255, 255, 255, 0.7);
        }

        .tournament-card {
            background: var(--bg-card-dark);
            border: 1px solid rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
            transition: all 0.3s ease;
            position: relative;
            z-index: 2;
        }

        .tournament-card:hover {
            border-color: rgba(75, 45, 224, 0.4);
            transform: translateY(-4px) scale(1.02);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .tournament-card .league-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--cyan);
            background: rgba(0, 212, 200, 0.1);
            padding: 4px 12px;
            border-radius: var(--radius-pill);
            margin-bottom: 12px;
        }

        .tournament-card h3 {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .tournament-card p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.7;
            margin: 0;
        }

        .tournament-meta {
            list-style: none;
            padding: 0;
            margin-top: 16px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 16px;
        }

        .tournament-meta li {
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: rgba(255, 255, 255, 0.5);
            font-size: 13px;
            margin-bottom: 8px;
        }

        .tournament-meta li span:last-child {
            color: #fff;
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-light);
        }

        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: #ffffff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-default);
            margin-bottom: 16px;
            overflow: hidden;
            border: 1px solid transparent;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .faq-item:hover {
            border-color: var(--border-hover);
            box-shadow: var(--shadow-hover);
        }

        .faq-item .faq-question {
            width: 100%;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            padding: 22px 28px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            text-align: left;
            line-height: 1.5;
        }

        .faq-item .faq-arrow {
            width: 28px;
            height: 28px;
            min-width: 28px;
            border-radius: 50%;
            background: rgba(75, 45, 224, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-left: 12px;
            transition: transform 0.3s ease, background 0.3s ease;
        }

        .faq-item .faq-arrow svg {
            width: 12px;
            height: 12px;
            fill: var(--primary);
        }

        .faq-item .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item .faq-answer-inner {
            padding: 0 28px 22px;
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-muted);
            max-width: 680px;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: var(--bg-light);
        }

        .cta-box {
            background: var(--gradient-hero);
            border-radius: 24px;
            padding: 64px 48px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: "";
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 2;
        }

        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 560px;
            margin: 0 auto 32px;
            position: relative;
            z-index: 2;
        }

        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--gradient-main);
            color: #fff;
            font-size: 17px;
            font-weight: 600;
            padding: 15px 40px;
            border-radius: var(--radius-pill);
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(255, 45, 120, 0.35);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
        }

        .cta-btn svg {
            width: 18px;
            height: 18px;
            fill: #fff;
            transition: transform 0.25s ease;
        }

        .cta-btn:hover {
            transform: scale(1.02);
            box-shadow: 0 10px 30px rgba(255, 45, 120, 0.5);
            color: #fff;
        }

        .cta-btn:hover svg {
            transform: translateX(4px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 72px;
            font-size: 14px;
        }

        .site-footer .logo {
            color: #fff;
            margin-bottom: 16px;
        }

        .site-footer .footer-desc {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.75;
            margin-top: 16px;
            max-width: 360px;
        }

        .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 24px;
        }

        .footer-social a {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.25s ease, transform 0.25s ease;
        }

        .footer-social a:hover {
            background: rgba(75, 45, 224, 0.6);
            transform: translateY(-3px);
        }

        .footer-social svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }

        .footer-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
        }

        .footer-title::after {
            content: "";
            display: block;
            width: 32px;
            height: 3px;
            border-radius: 3px;
            background: var(--gradient-main);
            margin-top: 8px;
        }

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: all 0.25s ease;
        }

        .footer-links a:hover {
            color: var(--cyan);
            padding-left: 6px;
        }

        .footer-contact-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-contact-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 14px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
            word-break: break-all;
        }

        .footer-contact-list svg {
            width: 18px;
            height: 18px;
            min-width: 18px;
            fill: var(--cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 56px;
            padding: 20px 0 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

        /* ===== Reveal ===== */
        .back-to-top {
            position: fixed;
            right: 28px;
            bottom: 36px;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--gradient-main);
            border: none;
            cursor: pointer;
            box-shadow: 0 6px 20px rgba(255, 45, 120, 0.3);
            z-index: 50;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .back-to-top:hover {
            transform: scale(1.08);
            box-shadow: 0 10px 30px rgba(255, 45, 120, 0.45);
        }

        .back-to-top svg {
            width: 18px;
            height: 18px;
            fill: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .nav-menu {
                gap: 2px;
            }
            .nav-menu li a {
                padding: 8px 10px;
                font-size: 14px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .section {
                padding-top: 64px;
                padding-bottom: 64px;
            }
            .section-header {
                margin-bottom: 40px;
            }
            .cta-box {
                padding: 48px 36px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                height: 64px;
            }
            .container {
                padding-left: 20px;
                padding-right: 20px;
            }
            .nav-menu {
                display: none;
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 20px;
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
                z-index: 99;
                gap: 0;
            }

            .nav-menu.show {
                display: flex;
            }

            .nav-menu li {
                width: 100%;
                border-bottom: 1px solid var(--border-color);
            }

            .nav-menu li:last-child {
                border-bottom: none;
            }

            .nav-menu li a {
                display: block;
                padding: 13px 12px;
                font-size: 18px;
                line-height: 1.5;
                border-radius: 8px;
                color: var(--text-main);
            }

            .nav-menu li a.active {
                color: var(--primary);
                background: rgba(75, 45, 224, 0.06);
            }

            .nav-toggle {
                display: flex;
            }

            .cta-box {
                padding: 32px 24px;
                border-radius: 16px;
            }

            .footer-bottom {
                margin-top: 32px;
            }
        }

        @media (min-width: 769px) {
            .nav-menu {
                display: flex !important;
            }
        }

        @media (max-width: 640px) {
            .page-hero {
                padding: 44px 0 56px;
            }
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .hero-description {
                font-size: 15px;
            }
            .section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .section-header p {
                font-size: 14px;
            }
            .stat-number {
                font-size: 28px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box p {
                font-size: 14px;
            }
        }

        @media (max-width: 480px) {
            .nav-toggle span {
                width: 22px;
            }
            .logo {
                font-size: 19px;
            }
            .logo .logo-icon {
                width: 32px;
                height: 32px;
                margin-right: 8px;
            }
            .logo .logo-icon svg {
                width: 18px;
                height: 18px;
            }
            .content-card .card-body {
                padding: 20px;
            }
        }

/* roulang page: article */
:root {
    --color-primary: #4B2DE0;
    --color-accent: #FF2D78;
    --color-teal: #00D4C8;
    --color-bg-light: #F7F7FC;
    --color-bg-dark: #0E0A1F;
    --color-card-dark: #171230;
    --color-card: #FFFFFF;
    --color-text: #1C1C2A;
    --color-text-secondary: #5E5E70;
    --color-border: #E6E6F0;
    --color-border-hover: #C9C9E0;
    --color-gold: #FFB800;
    --gradient-primary: linear-gradient(90deg, #4B2DE0 0%, #FF2D78 100%);
    --gradient-hero: linear-gradient(135deg, #0E0A1F 0%, #2A1668 55%, #4B2DE0 100%);
    --radius-large: 20px;
    --radius-card: 14px;
    --radius-pill: 999px;
    --shadow-default: 0 2px 8px rgba(14,10,31,0.06), 0 8px 32px rgba(14,10,31,0.08);
    --shadow-hover: 0 6px 16px rgba(14,10,31,0.12), 0 16px 40px rgba(14,10,31,0.16);
    --transition: 0.25s ease;
    --space-section: 96px;
    --container-max: 1280px;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--color-text);
    background: var(--color-bg-light);
    font-variant-numeric: tabular-nums;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--color-primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent); }
button { font-family: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

/* ========== Header ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    height: 72px;
    display: flex;
    align-items: center;
    transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 2px 12px rgba(0,0,0,0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; width: 100%; position: relative; }
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 800;
    color: var(--color-text);
    white-space: nowrap;
    letter-spacing: 0.5px;
}
.logo:hover { color: var(--color-primary); }
.logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(75,45,224,0.3);
    flex-shrink: 0;
}
.logo-icon svg { width: 18px; height: 18px; fill: #fff; }
.menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    transition: background var(--transition);
}
.menu-toggle:hover { background: rgba(75,45,224,0.06); }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--color-text); border-radius: 2px; transition: transform var(--transition), opacity var(--transition); }
.menu-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
nav.nav-menu { flex: 1; justify-content: flex-end; display: flex; }
nav.nav-menu > ul {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 6px;
}
.nav-menu li a {
    display: block;
    padding: 10px 16px;
    font-size: 15px;
    font-weight: 500;
    color: #333;
    border-radius: var(--radius-pill);
    transition: all var(--transition);
}
.nav-menu li a:hover { color: var(--color-primary); background: rgba(75,45,224,0.06); }
.nav-menu li a.active { color: var(--color-primary); font-weight: 700; background: rgba(75,45,224,0.08); }
.nav-menu li a.nav-download {
    background: var(--gradient-primary);
    color: #fff;
    font-weight: 600;
    padding: 10px 24px;
    box-shadow: 0 4px 14px rgba(75,45,224,0.3);
}
.nav-menu li a.nav-download:hover { box-shadow: 0 6px 20px rgba(255,45,120,0.35); transform: translateY(-1px); color: #fff; }

/* ========== Breadcrumb ========== */
.breadcrumb-section {
    background: linear-gradient(180deg, #EFEDF9 0%, var(--color-bg-light) 100%);
    padding: 22px 0;
    border-bottom: 1px solid var(--color-border);
}
.breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 14px; color: var(--color-text-secondary); }
.breadcrumb a { color: var(--color-text-secondary); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .crumb-sep { opacity: 0.4; }
.breadcrumb .current { color: var(--color-text); font-weight: 600; max-width: 520px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* ========== Article ========== */
.article-section { padding: var(--space-section) 0; background: var(--color-bg-light); }
.article-card {
    background: #fff;
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-default);
    padding: 48px;
    max-width: 900px;
    margin: 0 auto;
    border: 1px solid var(--color-border);
}
.article-header { margin-bottom: 36px; text-align: center; }
.article-header h1 { font-size: 36px; line-height: 1.3; font-weight: 800; color: var(--color-text); margin: 0 0 20px; letter-spacing: 0.5px; }
.article-meta { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px 24px; font-size: 14px; color: var(--color-text-secondary); align-items: center; }
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.meta-item svg { width: 16px; height: 16px; fill: var(--color-text-secondary); }
.category-tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 16px;
    border-radius: var(--radius-pill);
    background: rgba(75,45,224,0.08);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 600;
    border: 1px solid rgba(75,45,224,0.12);
}
.article-body {
    max-width: 720px;
    margin: 0 auto;
    font-size: 16px;
    line-height: 1.75;
    color: var(--color-text);
}
.article-body > * { margin-bottom: 24px; }
.article-body h2 { font-size: 26px; font-weight: 700; line-height: 1.4; margin: 48px 0 18px; padding-bottom: 10px; border-bottom: 2px solid rgba(75,45,224,0.1); }
.article-body h3 { font-size: 20px; font-weight: 700; margin: 36px 0 14px; }
.article-body p { margin-bottom: 18px; }
.article-body img { border-radius: var(--radius-card); width: 100%; height: auto; box-shadow: var(--shadow-default); }
.article-body blockquote { border-left: 4px solid var(--color-primary); background: rgba(75,45,224,0.04); padding: 18px 22px; border-radius: 0 12px 12px 0; color: var(--color-text-secondary); margin: 24px 0; }
.article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 24px; }
.article-body li { margin-bottom: 8px; }
.article-body a { text-decoration: underline; text-underline-offset: 4px; text-decoration-color: rgba(75,45,224,0.3); }
.article-body code { background: rgba(75,45,224,0.06); padding: 2px 8px; border-radius: 6px; font-size: 14px; color: var(--color-primary); }
.article-footer-bar {
    margin-top: 44px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}
.article-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
    display: inline-block;
    padding: 5px 14px;
    border-radius: var(--radius-pill);
    background: rgba(75,45,224,0.06);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 500;
    border: 1px solid rgba(75,45,224,0.12);
    transition: all var(--transition);
}
.tag:hover { background: rgba(75,45,224,0.12); }
.share-buttons { display: flex; gap: 10px; }
.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-primary);
    transition: all var(--transition);
}
.share-btn:hover { border-color: var(--color-primary); background: rgba(75,45,224,0.06); transform: translateY(-2px); }
.share-btn svg { width: 18px; height: 18px; fill: currentColor; }
.article-back { margin-top: 32px; text-align: center; }
.not-found {
    text-align: center;
    padding: 72px 24px;
    max-width: 720px;
    margin: 0 auto;
}
.not-found-icon { width: 72px; height: 72px; fill: var(--color-primary); opacity: 0.35; margin-bottom: 20px; }
.not-found p { font-size: 20px; font-weight: 600; color: var(--color-text); margin-bottom: 24px; }

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 30px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
    text-decoration: none;
}
.btn-primary { background: var(--gradient-primary); color: #fff; box-shadow: 0 4px 14px rgba(75,45,224,0.25); }
.btn-primary:hover { color: #fff; box-shadow: 0 8px 24px rgba(255,45,120,0.35); transform: translateY(-2px); }
.btn-outline { background: transparent; color: var(--color-primary); border: 2px solid var(--color-primary); padding: 10px 28px; }
.btn-outline:hover { background: rgba(75,45,224,0.06); border-color: var(--color-accent); color: var(--color-accent); transform: translateY(-2px); }

/* ========== Related ========== */
.related-section { padding: var(--space-section) 0; background: var(--color-bg-light); }
.section-title { font-size: 32px; font-weight: 700; margin-bottom: 40px; text-align: center; color: var(--color-text); }
.related-col { margin-bottom: 24px; }
.related-card {
    background: #fff;
    border-radius: var(--radius-large);
    overflow: hidden;
    box-shadow: var(--shadow-default);
    transition: all var(--transition);
    height: 100%;
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--color-border-hover); }
.related-card img { width: 100%; height: 200px; object-fit: cover; display: block; transition: transform 0.4s ease; }
.related-card:hover img { transform: scale(1.03); }
.related-card-body { padding: 24px; flex: 1; }
.related-card-body h3 { font-size: 20px; font-weight: 700; margin: 0 0 10px; line-height: 1.5; }
.related-card-body h3 a { color: var(--color-text); transition: color var(--transition); }
.related-card-body h3 a:hover { color: var(--color-primary); }
.related-card-body p { font-size: 14px; color: var(--color-text-secondary); margin: 0; line-height: 1.7; }

/* ========== FAQ ========== */
.faq-section { padding: var(--space-section) 0; background: var(--color-bg-light); }
.accordion.faq-list {
    list-style: none;
    margin: 0 auto;
    padding: 0;
    max-width: 800px;
    background: transparent;
    border: none;
}
.accordion.faq-list .accordion-item {
    background: #fff;
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-default);
    margin-bottom: 16px;
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: box-shadow var(--transition);
}
.accordion.faq-list .accordion-item:last-child { margin-bottom: 0; }
.accordion.faq-list .accordion-item.is-active { border-color: rgba(75,45,224,0.2); box-shadow: var(--shadow-hover); }
.accordion.faq-list .accordion-title {
    background: transparent !important;
    border: none !important;
    color: var(--color-text) !important;
    font-size: 16px !important;
    font-weight: 600;
    line-height: 1.5;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    text-align: left;
    transition: background var(--transition);
}
.accordion.faq-list .accordion-title:hover { background: rgba(75,45,224,0.02) !important; }
.accordion.faq-list .accordion-title::before,
.accordion.faq-list .accordion-title::after { content: none !important; }
.accordion.faq-list .accordion-title .faq-icon {
    width: 20px;
    height: 20px;
    fill: var(--color-primary);
    transition: transform var(--transition);
    flex-shrink: 0;
    margin-left: 16px;
}
.accordion.faq-list .accordion-item.is-active > .accordion-title .faq-icon { transform: rotate(180deg); }
.accordion.faq-list .accordion-content {
    padding: 0 24px 22px;
    color: var(--color-text-secondary);
    font-size: 15px;
    line-height: 1.7;
    border: none !important;
    background: transparent !important;
    max-width: 680px;
}
.accordion.faq-list .accordion-content p { margin: 0; }

/* ========== CTA ========== */
.cta-section { padding: var(--space-section) 0; background: var(--color-bg-light); }
.cta-card {
    background: linear-gradient(135deg, rgba(14,10,31,0.94) 0%, rgba(42,22,104,0.9) 55%, rgba(75,45,224,0.88) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    border-radius: 24px;
    padding: 72px 48px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.cta-card h2 { font-size: 32px; margin: 0 0 12px; color: #fff; font-weight: 800; }
.cta-card p { font-size: 16px; opacity: 0.82; margin: 0 0 32px; }
.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--gradient-primary);
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    padding: 15px 46px;
    border-radius: var(--radius-pill);
    border: none;
    box-shadow: 0 8px 24px rgba(255,45,120,0.3);
    transition: all var(--transition);
    text-decoration: none;
}
.cta-btn:hover { color: #fff; transform: scale(1.02) translateY(-2px); box-shadow: 0 12px 32px rgba(255,45,120,0.4); }
.cta-btn svg { width: 18px; height: 18px; fill: currentColor; transition: transform var(--transition); }
.cta-btn:hover svg { transform: translateX(4px); }

/* ========== Footer ========== */
.site-footer {
    background: var(--color-bg-dark);
    color: #A9A8C0;
    padding: 64px 0 0;
    font-size: 14px;
    line-height: 1.8;
}
.site-footer .logo { color: #fff; margin-bottom: 16px; display: inline-flex; }
.site-footer p { opacity: 0.85; max-width: 360px; margin-top: 12px; }
.footer-title { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { color: #A9A8C0; transition: color var(--transition); }
.footer-links a:hover { color: var(--color-primary); }
.footer-contact-list { list-style: none; padding: 0; margin: 0; }
.footer-contact-list li { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; color: #A9A8C0; }
.footer-contact-list svg { width: 16px; height: 16px; fill: #A9A8C0; flex-shrink: 0; }
.footer-social { display: flex; gap: 12px; margin-top: 18px; }
.footer-social a {
    display: flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 50%;
    background: rgba(255,255,255,0.08);
    color: #fff;
    transition: all var(--transition);
}
.footer-social a:hover { background: var(--gradient-primary); transform: translateY(-2px); }
.footer-social svg { width: 16px; height: 16px; fill: currentColor; }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    margin-top: 48px;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .article-card { padding: 40px; }
    .article-header h1 { font-size: 30px; }
}
@media (max-width: 768px) {
    :root { --space-section: 64px; }
    .menu-toggle { display: flex; }
    nav.nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        padding: 16px 24px 28px;
        box-shadow: 0 16px 32px rgba(14,10,31,0.1);
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        z-index: 99;
        height: auto;
        display: flex;
        border-bottom: 1px solid var(--color-border);
    }
    nav.nav-menu.open { transform: translateY(0); }
    nav.nav-menu > ul { flex-direction: column; align-items: stretch; gap: 4px; width: 100%; }
    .nav-menu li a { padding: 12px 16px; font-size: 17px; line-height: 1.4; }
    .nav-menu li a.nav-download { text-align: center; margin-top: 10px; line-height: 1.4; }
    .article-card { padding: 28px 20px; }
    .article-header h1 { font-size: 24px; }
    .article-body { font-size: 15px; }
    .article-footer-bar { flex-direction: column; align-items: flex-start; }
    .section-title { font-size: 24px; }
    .cta-card { padding: 56px 24px; }
    .cta-card h2 { font-size: 24px; }
    .breadcrumb .current { max-width: 220px; }
    .site-footer { padding-top: 48px; }
}
@media (max-width: 520px) {
    .container { padding: 0 20px; }
    .article-section { --space-section: 48px; }
    .related-card img { height: 160px; }
    .accordion.faq-list .accordion-title { font-size: 15px !important; padding: 18px 20px; }
    .accordion.faq-list .accordion-content { padding: 0 20px 18px; }
    .cta-btn { padding: 14px 36px; font-size: 15px; }
    .breadcrumb { font-size: 13px; gap: 6px; }
}