/* roulang page: index */
:root{--primary:#0B1B3B;--primary-light:#16294D;--primary-dark:#070F24;--accent:#D4A843;--accent-hover:#C08E2E;--accent-soft:#F5E6C4;--bg:#F5F7FB;--bg-deep:#0E1D3F;--white:#fff;--text:#161A26;--text-body:#3D4354;--text-light:#6F7687;--text-muted:#9CA3AF;--border:#E3E8F0;--radius:12px;--radius-lg:20px;--radius-full:999px;--shadow-sm:0 2px 10px rgba(11,27,59,.06);--shadow-md:0 8px 30px rgba(11,27,59,.08);--shadow-lg:0 20px 50px rgba(11,27,59,.12);--transition:all .3s ease}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,textarea{font:inherit;border:none;background:none;outline:none}
ul,ol{list-style:none}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:var(--radius-full);font-weight:600;font-size:15px;line-height:1;cursor:pointer;transition:var(--transition)}
.btn-primary{background:var(--accent);color:var(--primary-dark)}
.btn-primary:hover{background:var(--accent-hover);transform:translateY(-2px);box-shadow:0 10px 25px rgba(212,168,67,.35)}
.btn-light{background:#fff;color:var(--primary)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-outline{border:1px solid rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm)}
.header-inner{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--primary);white-space:nowrap;letter-spacing:.5px}
.brand-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:var(--accent);border-radius:12px;font-size:20px;font-weight:900}
.header-search{flex:1;max-width:420px;display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-full);padding:0 20px;height:46px;transition:var(--transition)}
.header-search:focus-within{border-color:var(--accent);background:#fff;box-shadow:0 0 0 4px rgba(212,168,67,.15)}
.header-search input{flex:1;height:100%;background:none;border:none;outline:none;font-size:14px;color:var(--text)}
.search-icon{width:18px;height:18px;color:var(--text-light);margin-right:10px;flex-shrink:0}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-link{padding:10px 16px;border-radius:var(--radius-full);font-size:15px;font-weight:500;color:var(--text-body);transition:var(--transition);white-space:nowrap}
.nav-link:hover{background:var(--bg);color:var(--primary)}
.nav-link.active{background:var(--primary);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:44px;height:44px;align-items:center;justify-content:center;cursor:pointer;border-radius:8px;transition:var(--transition)}
.nav-toggle:hover{background:var(--bg)}
.nav-toggle span{width:22px;height:2px;background:var(--text);border-radius:2px;transition:var(--transition)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-menu{position:fixed;top:72px;left:0;right:0;background:#fff;padding:24px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);z-index:99;transform:translateY(-120%);transition:transform .35s ease;visibility:hidden}
.mobile-menu.open{transform:translateY(0);visibility:visible}
.mobile-search{display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-full);padding:0 18px;height:46px;margin-bottom:16px}
.mobile-search input{flex:1;height:100%;background:none;border:none;font-size:15px;color:var(--text)}
.mobile-nav{display:flex;flex-direction:column;gap:4px}
.mobile-nav a{padding:12px 18px;border-radius:10px;font-size:16px;font-weight:500;color:var(--text-body);transition:var(--transition)}
.mobile-nav a:hover,.mobile-nav a.active{background:var(--primary);color:#fff}
.hero{position:relative;padding:110px 0;background:linear-gradient(130deg,rgba(7,15,36,.92) 0%,rgba(11,27,59,.82) 50%,rgba(20,44,92,.7) 100%),url('/assets/images/backpic/back-1.png') center/cover no-repeat;color:#fff;overflow:hidden}
.hero-inner{max-width:780px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);padding:8px 18px;border-radius:var(--radius-full);font-size:13px;letter-spacing:1px;backdrop-filter:blur(4px)}
.hero-badge i{width:6px;height:6px;background:var(--accent);border-radius:50%;display:inline-block}
.hero-title{font-size:clamp(34px,5vw,54px);line-height:1.18;font-weight:900;margin:24px 0 16px;letter-spacing:1px}
.hero-title .highlight{color:var(--accent)}
.hero-subtitle{font-size:clamp(15px,2vw,18px);color:rgba(255,255,255,.85);max-width:640px;margin-bottom:36px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-meta{display:flex;gap:40px;margin-top:56px;flex-wrap:wrap}
.hero-meta .meta-item{display:flex;flex-direction:column;gap:4px}
.hero-meta .meta-item strong{font-size:30px;font-weight:800;color:var(--accent);font-variant-numeric:tabular-nums}
.hero-meta .meta-item em{font-style:normal;font-size:13px;color:rgba(255,255,255,.6);letter-spacing:1px}
.section{padding:80px 0}
.section-alt{background:var(--white)}
.section-head{max-width:680px;margin-bottom:44px}
.section-tag{display:inline-block;background:var(--accent-soft);color:var(--primary);font-size:13px;font-weight:700;padding:6px 16px;border-radius:var(--radius-full);letter-spacing:1px;margin-bottom:14px}
.section-title{font-size:clamp(26px,3vw,34px);font-weight:800;color:var(--text);line-height:1.3;margin-bottom:12px}
.section-desc{color:var(--text-light);font-size:16px;line-height:1.7}
.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.feature-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px 24px;transition:var(--transition);position:relative;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:3px;background:linear-gradient(90deg,var(--accent),transparent);opacity:0;transition:var(--transition)}
.feature-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px);border-color:rgba(212,168,67,.4)}
.feature-card:hover::before{opacity:1}
.feature-icon{display:flex;align-items:center;justify-content:center;width:52px;height:52px;background:var(--bg);border-radius:14px;margin-bottom:18px;font-size:24px;color:var(--primary)}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text)}
.feature-card p{font-size:14px;color:var(--text-light);line-height:1.65}
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.cat-card{border-radius:var(--radius-lg);overflow:hidden;background:#fff;border:1px solid var(--border);transition:var(--transition);display:flex;flex-direction:column}
.cat-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-6px)}
.cat-cover{height:180px;overflow:hidden;position:relative}
.cat-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.cat-card:hover .cat-cover img{transform:scale(1.05)}
.cat-cover::after{content:'';position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(11,27,59,.45))}
.cat-body{padding:24px;display:flex;flex-direction:column;flex:1}
.cat-body h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--text)}
.cat-body p{font-size:14px;color:var(--text-light);line-height:1.65;flex:1}
.cat-link{display:inline-flex;align-items:center;gap:6px;margin-top:16px;font-size:14px;font-weight:600;color:var(--accent-hover);transition:var(--transition)}
.cat-link:hover{gap:12px;color:var(--primary)}
.post-list{display:flex;flex-direction:column;gap:12px}
.post-card{display:flex;align-items:center;gap:20px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;transition:var(--transition);position:relative}
.post-card:hover{box-shadow:var(--shadow-md);border-color:rgba(212,168,67,.35);transform:translateX(4px)}
.post-num{font-size:22px;font-weight:900;color:var(--border);width:38px;text-align:center;font-variant-numeric:tabular-nums}
.post-main{flex:1;min-width:0}
.post-main h3{font-size:17px;font-weight:600;color:var(--text);margin-bottom:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:var(--transition)}
.post-card:hover .post-main h3{color:var(--accent-hover)}
.post-main p{font-size:14px;color:var(--text-light);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.post-aside{display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.post-cat{display:inline-block;background:var(--accent-soft);color:var(--primary);font-size:12px;font-weight:600;padding:4px 12px;border-radius:var(--radius-full)}
.post-aside time{font-size:13px;color:var(--text-muted)}
.post-arrow{font-size:20px;color:var(--text-muted);transition:var(--transition)}
.post-card:hover .post-arrow{color:var(--accent-hover);transform:translateX(4px)}
.empty-tip{text-align:center;padding:40px;color:var(--text-muted);font-size:15px;background:#fff;border-radius:var(--radius);border:1px dashed var(--border)}
.stats{background:var(--bg-deep);position:relative;overflow:hidden}
.stats::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;opacity:.08}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;position:relative;z-index:1}
.stat-item{text-align:center;padding:20px}
.stat-number{font-size:clamp(28px,3vw,42px);font-weight:900;color:var(--accent);line-height:1.2;font-variant-numeric:tabular-nums}
.stat-number span{font-size:.5em;font-weight:700;color:rgba(255,255,255,.6);margin-left:2px}
.stat-label{display:block;margin-top:8px;color:rgba(255,255,255,.65);font-size:14px;letter-spacing:1px}
.process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.process-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;position:relative;transition:var(--transition)}
.process-item:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.process-step{font-size:34px;font-weight:900;color:var(--accent-soft);line-height:1;display:block;margin-bottom:16px}
.process-item h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text)}
.process-item p{font-size:14px;color:var(--text-light);line-height:1.7}
.faq{padding:80px 0;background:var(--white)}
.faq-list{max-width:800px;margin:0 auto}
.faq-item{border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;transition:var(--transition);background:#fff}
.faq-item:hover{border-color:rgba(212,168,67,.3)}
.faq-q{padding:20px 24px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;font-size:16px;font-weight:600;color:var(--text);gap:16px}
.faq-q i{width:10px;height:10px;border-right:2px solid var(--text-light);border-bottom:2px solid var(--text-light);transform:rotate(45deg);transition:var(--transition);flex-shrink:0;margin-top:-4px}
.faq-q.open i{transform:rotate(225deg);margin-top:4px}
.faq-a{padding:0 24px;font-size:15px;color:var(--text-light);line-height:1.8;max-height:0;overflow:hidden;transition:max-height .35s ease, padding .35s ease}
.faq-a.open{padding:0 24px 20px;max-height:300px}
.cta{position:relative;padding:80px 0;background:linear-gradient(120deg,var(--primary-dark),var(--primary-light)),url('/assets/images/backpic/back-2.png') center/cover no-repeat;color:#fff;text-align:center}
.cta-inner{max-width:640px;margin:0 auto}
.cta-title{font-size:clamp(26px,3vw,34px);font-weight:800;margin-bottom:14px}
.cta-desc{font-size:16px;color:rgba(255,255,255,.8);margin-bottom:28px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.site-footer{background:var(--primary-dark);color:rgba(255,255,255,.7);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-brand .brand{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:280px}
.footer-col h4{color:#fff;font-size:16px;font-weight:700;margin-bottom:18px;letter-spacing:.5px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:5px 0;transition:var(--transition)}
.footer-col a:hover{color:var(--accent);padding-left:6px}
.footer-col p{font-size:14px;line-height:1.9;color:rgba(255,255,255,.55)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.45)}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted);padding:20px 0}
.breadcrumb a{color:var(--text-body);transition:var(--transition)}
.breadcrumb a:hover{color:var(--accent-hover)}
.breadcrumb span.sep{color:var(--border)}
.page-hero{padding:80px 0;color:#fff;background:linear-gradient(120deg,rgba(7,15,36,.92),rgba(22,41,77,.8)),url('/assets/images/backpic/back-1.png') center/cover no-repeat}
.page-hero h1{font-size:clamp(28px,3.5vw,42px);font-weight:800;margin-bottom:12px}
.page-hero p{font-size:16px;color:rgba(255,255,255,.8);max-width:680px;line-height:1.8}
.article-layout{display:grid;grid-template-columns:1fr 340px;gap:32px;padding:40px 0 80px}
.article-main{min-width:0}
.article-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:36px;box-shadow:var(--shadow-sm)}
.article-card .art-cat{display:inline-block;background:var(--accent-soft);color:var(--primary);font-size:13px;font-weight:600;padding:6px 14px;border-radius:var(--radius-full);margin-bottom:18px}
.article-card h1{font-size:clamp(24px,3vw,32px);font-weight:800;line-height:1.35;margin-bottom:16px;color:var(--text)}
.article-card .art-meta{display:flex;align-items:center;gap:20px;font-size:14px;color:var(--text-muted);padding-bottom:24px;border-bottom:1px solid var(--border);margin-bottom:24px;flex-wrap:wrap}
.article-card .art-content{font-size:16px;line-height:2;color:var(--text-body)}
.article-card .art-content p{margin-bottom:20px}
.article-card .art-content h2{font-size:22px;font-weight:700;color:var(--text);margin:32px 0 16px}
.article-card .art-content h3{font-size:18px;font-weight:700;color:var(--text);margin:24px 0 12px}
.article-card .art-content img{border-radius:var(--radius);margin:20px 0}
.sidebar{display:flex;flex-direction:column;gap:24px}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px}
.side-card h3{font-size:17px;font-weight:700;margin-bottom:16px;color:var(--text);padding-bottom:12px;border-bottom:2px solid var(--accent-soft)}
.side-card a{display:block;padding:8px 0;font-size:14px;color:var(--text-body);transition:var(--transition);border-bottom:1px solid var(--bg);line-height:1.5}
.side-card a:hover{color:var(--accent-hover);padding-left:8px}
.side-card .side-cat{font-size:12px;color:var(--text-muted);margin-right:8px}
.not-found{text-align:center;padding:80px 20px;background:#fff;border-radius:var(--radius-lg);border:1px solid var(--border)}
.not-found h2{font-size:28px;color:var(--text);margin-bottom:16px}
.not-found p{color:var(--text-light);margin-bottom:24px}
.method-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.method-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);padding:32px 28px;text-align:center;transition:var(--transition)}
.method-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.method-icon{width:64px;height:64px;margin:0 auto 20px;background:var(--bg);border-radius:18px;display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--primary)}
.method-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--text)}
.method-card p{font-size:14px;color:var(--text-light);line-height:1.7}
.step-list{position:relative;padding-left:36px}
.step-list::before{content:'';position:absolute;left:12px;top:10px;bottom:10px;width:2px;background:var(--accent-soft)}
.step-item{position:relative;margin-bottom:28px}
.step-item::before{content:'';position:absolute;left:-36px;top:6px;width:24px;height:24px;background:var(--accent);border-radius:50%;border:4px solid var(--accent-soft)}
.step-item h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:8px}
.step-item p{font-size:15px;color:var(--text-light);line-height:1.7}
.detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.detail-item{display:flex;gap:18px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:var(--transition)}
.detail-item:hover{box-shadow:var(--shadow-md);border-color:rgba(212,168,67,.3)}
.detail-icon{flex-shrink:0;width:44px;height:44px;background:var(--accent-soft);border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--primary)}
.detail-item h3{font-size:16px;font-weight:700;margin-bottom:6px;color:var(--text)}
.detail-item p{font-size:14px;color:var(--text-light);line-height:1.7}
@media(max-width:1024px){
.feature-grid{grid-template-columns:repeat(2,1fr)}
.cat-grid,.method-grid{grid-template-columns:repeat(2,1fr)}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.article-layout{grid-template-columns:1fr}
.header-search{max-width:280px}
.nav-link{padding:8px 12px;font-size:14px}
}
@media(max-width:768px){
.section{padding:56px 0}
.site-header .header-search,.site-header .main-nav{display:none}
.nav-toggle{display:flex}
.hero{padding:80px 0}
.hero-meta{gap:24px}
.post-card{flex-wrap:wrap;gap:12px}
.post-main{flex:1 1 100%;order:3}
.post-num{width:auto}
.post-aside{order:2;flex-direction:row;align-items:center;gap:10px}
.post-arrow{display:none}
.process-grid{grid-template-columns:1fr}
.page-hero{padding:60px 0}
.article-card{padding:24px}
}
@media(max-width:520px){
.container{padding:0 16px}
.feature-grid{grid-template-columns:1fr}
.cat-grid{grid-template-columns:1fr}
.method-grid{grid-template-columns:1fr}
.stats-grid{grid-template-columns:1fr}
.detail-grid{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.hero-actions .btn{width:100%;justify-content:center}
.brand-text{font-size:16px}
.header-inner{gap:12px}
.section-head{text-align:center;margin-left:auto;margin-right:auto}
}

/* roulang page: article */
:root {
            --primary: #FFD700;
            --primary-dark: #E6B800;
            --primary-light: #FFF5CC;
            --accent: #FF6B35;
            --accent-dark: #E5531F;
            --dark-bg: #0B1023;
            --dark-bg-2: #131A36;
            --dark-card: #1A2340;
            --dark-border: rgba(255, 255, 255, 0.08);
            --text-light: #FFFFFF;
            --text-soft: rgba(255, 255, 255, 0.75);
            --text-muted: rgba(255, 255, 255, 0.5);
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 4px 15px rgba(0, 0, 0, 0.2);
            --shadow-md: 0 8px 30px rgba(0, 0, 0, 0.3);
            --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --container: 1200px;
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font);
            background: var(--dark-bg);
            color: var(--text-soft);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background:
                radial-gradient(ellipse at 20% 50%, rgba(255, 215, 0, 0.06) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(255, 107, 53, 0.04) 0%, transparent 45%),
                radial-gradient(ellipse at 60% 80%, rgba(0, 212, 255, 0.04) 0%, transparent 40%);
            pointer-events: none;
            z-index: 0;
        }

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

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

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

        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
            position: relative;
            z-index: 1;
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(11, 16, 35, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--dark-border);
            transition: var(--transition);
        }

        .site-header.scrolled {
            background: rgba(11, 16, 35, 0.95);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding: 14px 24px;
            flex-wrap: wrap;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

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

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 12px;
            color: var(--dark-bg);
            font-size: 1.2rem;
            font-weight: 900;
            box-shadow: 0 4px 15px rgba(255, 215, 0, 0.3);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            gap: 16px;
            flex: 1;
            justify-content: center;
            min-width: 200px;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 50px;
            padding: 4px;
        }

        .nav-link {
            display: inline-block;
            padding: 8px 18px;
            border-radius: 50px;
            color: var(--text-soft);
            font-size: 0.9rem;
            font-weight: 500;
            white-space: nowrap;
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-link.active {
            background: linear-gradient(135deg, var(--primary), #FFE566);
            color: var(--dark-bg);
            font-weight: 700;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
        }

        .header-search {
            display: flex;
            align-items: center;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 50px;
            padding: 0 6px 0 16px;
            max-width: 260px;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .header-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.15);
        }

        .header-search input {
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-light);
            font-size: 0.875rem;
            padding: 9px 8px;
            width: 180px;
        }

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

        .header-search button {
            background: linear-gradient(135deg, var(--primary), #FFE566);
            border: none;
            border-radius: 50px;
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark-bg);
            cursor: pointer;
            transition: var(--transition);
        }

        .header-search button:hover {
            transform: scale(1.05);
            box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
        }

        .mobile-toggle {
            display: none;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 50%;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            color: var(--text-light);
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition);
        }

        .mobile-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        @media (max-width: 1024px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .nav-wrapper {
                order: 3;
                width: 100%;
                justify-content: flex-start;
                overflow-x: auto;
                padding-bottom: 4px;
            }
            .main-nav {
                min-width: max-content;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                padding: 12px 16px;
            }
            .brand {
                font-size: 1.05rem;
            }
            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 1rem;
            }
            .mobile-toggle {
                display: flex;
            }
            .nav-wrapper {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--dark-bg-2);
                border-bottom: 1px solid var(--dark-border);
                padding: 12px 16px;
                box-shadow: var(--shadow-md);
            }
            .nav-wrapper.open {
                display: flex;
                flex-direction: column;
                align-items: stretch;
            }
            .main-nav {
                flex-direction: column;
                background: transparent;
                border: none;
                gap: 4px;
                width: 100%;
            }
            .nav-link {
                border-radius: 10px;
                padding: 12px 16px;
            }
            .header-search {
                max-width: 100%;
                margin-top: 8px;
            }
            .header-search input {
                width: 100%;
                flex: 1;
            }
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            padding: 70px 0 50px;
            background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-bg-2) 60%, rgba(19, 26, 54, 0.8) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--dark-border);
        }

        .page-banner .container {
            text-align: center;
        }

        .breadcrumb {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 50px;
            padding: 6px 18px;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .breadcrumb a {
            color: var(--text-soft);
        }

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

        .breadcrumb i {
            font-size: 0.7rem;
            color: var(--text-muted);
        }

        .page-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-subtitle {
            font-size: 1.1rem;
            color: var(--text-soft);
            max-width: 700px;
            margin: 0 auto;
        }

        /* ========== ARTICLE LAYOUT ========== */
        .article-section {
            padding: 60px 0 80px;
            background: var(--dark-bg);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        .article-main {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: 20px;
            box-shadow: var(--shadow-md);
            overflow: hidden;
        }

        .article-cover {
            width: 100%;
            height: 300px;
            object-fit: cover;
            position: relative;
        }

        .article-cover::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 100px;
            background: linear-gradient(to top, var(--dark-card), transparent);
        }

        .article-body {
            padding: 36px 42px;
        }

        .article-head {
            margin-bottom: 28px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--dark-border);
        }

        .article-head h1 {
            font-size: clamp(1.5rem, 3vw, 2.2rem);
            font-weight: 800;
            color: var(--text-light);
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-meta i {
            color: var(--primary);
            font-size: 0.8rem;
        }

        .category-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.2), rgba(255, 215, 0, 0.1));
            border: 1px solid rgba(255, 215, 0, 0.3);
            color: var(--primary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 50px;
            letter-spacing: 0.5px;
        }

        .article-content {
            color: var(--text-soft);
            font-size: 1rem;
            line-height: 1.9;
        }

        .article-content h2 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-light);
            margin: 32px 0 16px;
            padding-left: 16px;
            border-left: 3px solid var(--primary);
        }

        .article-content h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-light);
            margin: 24px 0 12px;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 20px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content a {
            color: var(--primary);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content blockquote {
            border-left: 4px solid var(--primary);
            background: rgba(255, 215, 0, 0.06);
            padding: 16px 20px;
            border-radius: 0 12px 12px 0;
            margin: 24px 0;
            color: var(--text-soft);
            font-style: italic;
        }

        .article-content img {
            border-radius: 12px;
            margin: 20px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--dark-border);
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.8rem;
            color: var(--text-soft);
            transition: var(--transition);
        }

        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(255, 215, 0, 0.08);
        }

        .tag i {
            font-size: 0.7rem;
            color: var(--primary);
        }

        .article-not-found {
            text-align: center;
            padding: 80px 40px;
        }

        .article-not-found i {
            font-size: 3rem;
            color: var(--primary);
            margin-bottom: 20px;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            border: none;
            transition: var(--transition);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), #FFE566);
            color: var(--dark-bg);
            box-shadow: 0 6px 25px rgba(255, 215, 0, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 35px rgba(255, 215, 0, 0.45);
            color: var(--dark-bg);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid var(--glass-border);
            color: var(--text-light);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-3px);
        }

        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: var(--radius);
            padding: 26px;
            box-shadow: var(--shadow-sm);
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--dark-border);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3 i {
            color: var(--primary);
        }

        .sidebar-list {
            list-style: none;
        }

        .sidebar-list li {
            margin-bottom: 4px;
        }

        .sidebar-list a {
            display: block;
            padding: 10px 12px;
            border-radius: 8px;
            color: var(--text-soft);
            font-size: 0.88rem;
            transition: var(--transition);
            border-left: 2px solid transparent;
        }

        .sidebar-list a:hover {
            background: rgba(255, 215, 0, 0.06);
            color: var(--primary);
            border-left-color: var(--primary);
            padding-left: 16px;
        }

        .sidebar-cta {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.08), rgba(255, 107, 53, 0.06));
            border: 1px solid rgba(255, 215, 0, 0.2);
        }

        .sidebar-cta p {
            font-size: 0.85rem;
            color: var(--text-soft);
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .sidebar-cta .btn {
            width: 100%;
            justify-content: center;
        }

        /* Guide box */
        .guide-box {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.07), rgba(255, 107, 53, 0.05));
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius);
            padding: 24px;
            margin-top: 36px;
        }

        .guide-box h3 {
            color: var(--text-light);
            font-size: 1.05rem;
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .guide-box h3 i {
            color: var(--primary);
        }

        .guide-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 14px;
            margin-bottom: 18px;
        }

        .guide-step {
            background: var(--glass-bg);
            border-radius: 10px;
            padding: 14px;
            text-align: center;
            border: 1px solid var(--glass-border);
        }

        .guide-step span {
            display: block;
            width: 30px;
            height: 30px;
            margin: 0 auto 8px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 50%;
            color: var(--dark-bg);
            font-weight: 800;
            font-size: 0.85rem;
            line-height: 30px;
        }

        .guide-step p {
            font-size: 0.8rem;
            color: var(--text-soft);
            margin: 0;
        }

        /* Related section */
        .related-section {
            padding: 60px 0 80px;
            background: var(--dark-bg-2);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            margin-bottom: 36px;
        }

        .section-header h2 {
            font-size: clamp(1.5rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
        }

        .section-header p {
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-card {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(255, 215, 0, 0.25);
        }

        .related-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 20px;
            flex: 1;
        }

        .related-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .related-card h3 a {
            color: var(--text-light);
        }

        .related-card h3 a:hover {
            color: var(--primary);
        }

        .related-card p {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .related-card .card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 20px;
            border-top: 1px solid var(--dark-border);
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* FAQ Section */
        .faq-section {
            padding: 70px 0;
            background: var(--dark-bg);
        }

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

        .faq-item {
            background: var(--dark-card);
            border: 1px solid var(--dark-border);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(255, 215, 0, 0.3);
            box-shadow: var(--shadow-sm);
        }

        .faq-item h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item h3 i {
            color: var(--primary);
            font-size: 0.85rem;
        }

        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-soft);
            margin: 0;
        }

        /* CTA */
        .cta-section {
            padding: 70px 0;
            background: linear-gradient(135deg, var(--dark-bg-2), var(--dark-bg)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            position: relative;
        }

        .cta-inner {
            text-align: center;
            background: rgba(11, 16, 35, 0.7);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: 24px;
            padding: 60px 40px;
            backdrop-filter: blur(10px);
            position: relative;
            overflow: hidden;
        }

        .cta-inner::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(255, 215, 0, 0.08), transparent 60%);
            animation: pulseGlow 6s ease-in-out infinite alternate;
        }

        .cta-inner h2 {
            font-size: clamp(1.8rem, 4vw, 2.4rem);
            font-weight: 800;
            color: var(--text-light);
            margin-bottom: 16px;
            position: relative;
        }

        .cta-inner p {
            color: var(--text-soft);
            max-width: 560px;
            margin: 0 auto 30px;
            font-size: 1rem;
            position: relative;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
        }

        @keyframes pulseGlow {
            0% {
                opacity: 0.5;
                transform: translate(0, 0);
            }
            100% {
                opacity: 1;
                transform: translate(5%, 5%);
            }
        }

        /* FOOTER */
        .site-footer {
            background: #070A18;
            border-top: 1px solid var(--dark-border);
            padding: 60px 0 0;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-top: 16px;
        }

        .footer-col h4 {
            color: var(--text-light);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 2px solid rgba(255, 215, 0, 0.3);
            display: inline-block;
        }

        .footer-col a,
        .footer-col p {
            display: block;
            color: var(--text-muted);
            font-size: 0.88rem;
            line-height: 1.7;
            margin-bottom: 8px;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            color: rgba(255, 255, 255, 0.35);
            font-size: 0.82rem;
            margin: 0;
        }

        @media (max-width: 992px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .sidebar-cta {
                grid-column: span 2;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .article-body {
                padding: 24px 20px;
            }
            .article-cover {
                height: 200px;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-meta {
                gap: 12px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .article-body {
                padding: 20px 16px;
            }
            .guide-steps {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .sidebar-cta {
                grid-column: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .cta-inner {
                padding: 40px 24px;
            }
            .cta-buttons {
                flex-direction: column;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #0a1628;
            --primary-light: #132744;
            --primary-deep: #060e1b;
            --accent: #d4a643;
            --accent-hover: #b8912f;
            --accent-soft: #faf3e0;
            --bg: #f4f6fb;
            --white: #ffffff;
            --text: #1a2332;
            --muted: #6b7a90;
            --border: #e3e9f2;
            --border-dark: #243956;
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 4px 24px rgba(10, 22, 40, 0.08);
            --shadow-lg: 0 12px 40px rgba(10, 22, 40, 0.14);
            --shadow-accent: 0 8px 30px rgba(212, 166, 67, 0.3);
            --spacing-section: 88px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--bg);
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition);
        }

        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: var(--primary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            backdrop-filter: blur(12px);
            background: rgba(10, 22, 40, 0.96);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 18px;
            color: var(--white);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--accent), #f0d27a);
            color: var(--primary);
            font-size: 20px;
            font-weight: 900;
            box-shadow: 0 4px 14px rgba(212, 166, 67, 0.4);
        }

        .search-area {
            flex: 1;
            max-width: 420px;
            position: relative;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 40px;
            padding: 8px 18px;
            transition: all var(--transition);
        }

        .search-box:hover,
        .search-box:focus-within {
            background: rgba(255, 255, 255, 0.14);
            border-color: var(--accent);
            box-shadow: 0 0 0 4px rgba(212, 166, 67, 0.12);
        }

        .search-box svg {
            width: 18px;
            height: 18px;
            stroke: rgba(255, 255, 255, 0.7);
            margin-right: 10px;
            flex-shrink: 0;
        }

        .search-box input {
            flex: 1;
            background: transparent;
            color: var(--white);
            font-size: 14px;
            min-width: 0;
        }

        .search-box input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.75);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--white);
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--accent);
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(212, 166, 67, 0.35);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            cursor: pointer;
        }

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

        /* Hero */
        .page-hero {
            position: relative;
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 50%, var(--primary-light) 100%);
            padding: 80px 0 70px;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212, 166, 67, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(212, 166, 67, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
        }

        .page-hero-content {
            flex: 1;
            max-width: 640px;
        }

        .page-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(212, 166, 67, 0.12);
            border: 1px solid rgba(212, 166, 67, 0.3);
            border-radius: 24px;
            padding: 6px 16px;
            font-size: 13px;
            color: #f0d27a;
            margin-bottom: 22px;
            font-weight: 600;
            letter-spacing: 0.5px;
        }

        .page-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--white);
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .page-hero h1 .highlight {
            color: var(--accent);
            position: relative;
        }

        .page-hero p {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 32px;
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 40px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #e2bd5d);
            color: var(--primary);
            box-shadow: 0 6px 20px rgba(212, 166, 67, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(212, 166, 67, 0.4);
            background: linear-gradient(135deg, #e2bd5d, var(--accent));
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--white);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.18);
            border-color: rgba(255, 255, 255, 0.35);
            transform: translateY(-2px);
        }

        .page-hero-image {
            flex: 1;
            max-width: 480px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
            position: relative;
        }

        .page-hero-image img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }

        .page-hero-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(6, 10, 18, 0.4));
            pointer-events: none;
        }

        /* Section */
        .section {
            padding: var(--spacing-section) 0;
        }

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

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }

        .section-header .kicker {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--accent);
            text-transform: uppercase;
            margin-bottom: 12px;
            background: var(--accent-soft);
            padding: 5px 14px;
            border-radius: 20px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            color: var(--text);
            margin-bottom: 14px;
        }

        .section-header p {
            color: var(--muted);
            font-size: 16px;
            line-height: 1.7;
        }

        /* Login Methods Cards */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .method-card {
            background: var(--white);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px 24px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            text-align: left;
        }

        .method-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), #f0d27a);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: transparent;
        }

        .method-card:hover::before {
            transform: scaleX(1);
        }

        .method-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--accent-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            font-size: 24px;
            color: var(--accent);
            font-weight: 700;
        }

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

        .method-card p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.65;
        }

        .method-card .method-tag {
            display: inline-block;
            margin-top: 12px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-soft);
            padding: 4px 12px;
            border-radius: 20px;
        }

        /* Steps */
        .steps-section {
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .steps-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(212, 166, 67, 0.1) 0%, transparent 60%);
        }

        .steps-section .container {
            position: relative;
            z-index: 2;
        }

        .steps-section .section-header h2 {
            color: var(--white);
        }

        .steps-section .section-header p {
            color: rgba(255, 255, 255, 0.65);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 32px 24px;
            position: relative;
            transition: all var(--transition);
            backdrop-filter: blur(4px);
        }

        .step-item:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-4px);
            border-color: rgba(212, 166, 67, 0.3);
        }

        .step-number {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), #f0d27a);
            color: var(--primary);
            font-weight: 800;
            font-size: 17px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            box-shadow: 0 4px 14px rgba(212, 166, 67, 0.3);
        }

        .step-item h3 {
            color: var(--white);
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .step-item p {
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
            line-height: 1.65;
        }

        /* Feature Split */
        .split-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .split-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .split-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .split-image:hover img {
            transform: scale(1.03);
        }

        .split-content h2 {
            font-size: 28px;
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .split-content p {
            color: var(--muted);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .check-list {
            margin-top: 20px;
            display: grid;
            gap: 12px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text);
            line-height: 1.6;
        }

        .check-list .tick {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--accent-soft);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 800;
            margin-top: 3px;
        }

        /* FAQ */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }

        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(212, 166, 67, 0.4);
            box-shadow: var(--shadow);
        }

        .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);
            user-select: none;
        }

        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent-soft);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 24px 20px;
            color: var(--muted);
            font-size: 15px;
            line-height: 1.75;
            border-top: 1px solid var(--border);
            padding-top: 14px;
            margin: 0 24px 0;
        }

        /* Safety Dark Section */
        .safety-section {
            background: linear-gradient(135deg, var(--primary-deep), var(--primary));
            position: relative;
            overflow: hidden;
            padding: 80px 0;
        }

        .safety-section::before {
            content: '';
            position: absolute;
            top: 20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212, 166, 67, 0.08) 0%, transparent 60%);
        }

        .safety-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .safety-content h2 {
            color: var(--white);
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .safety-content p {
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.8;
            margin-bottom: 24px;
        }

        .safety-tips {
            display: grid;
            gap: 12px;
        }

        .safety-tip {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 14px 16px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 12px;
            border-left: 3px solid var(--accent);
        }

        .safety-tip span {
            color: var(--accent);
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
            padding-top: 2px;
        }

        .safety-tip p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
            margin: 0;
        }

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

        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(212, 166, 67, 0.3);
            transform: translateY(-4px);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
        }

        /* CTA */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(135deg, var(--accent) 0%, #e8c96a 60%, #f5de8c 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 50%;
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            color: var(--primary);
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-inner p {
            color: rgba(10, 22, 40, 0.7);
            font-size: 16px;
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .btn-dark {
            background: var(--primary);
            color: var(--accent);
            padding: 14px 36px;
            font-size: 16px;
            box-shadow: 0 8px 30px rgba(10, 22, 40, 0.3);
        }

        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(10, 22, 40, 0.4);
        }

        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 64px 0 0;
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent 40%);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .brand {
            margin-bottom: 14px;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.5);
            max-width: 300px;
            margin-top: 12px;
        }

        .footer-col h4 {
            color: var(--white);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: all var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-col p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            padding: 4px 0;
            line-height: 1.7;
        }

        .footer-bottom {
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.35);
        }

        /* Mobile menu */
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }

            .spacing-section {
                --spacing-section: 64px;
            }

            .method-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .search-area {
                max-width: 300px;
            }

            .main-nav {
                gap: 4px;
            }

            .nav-link {
                padding: 7px 12px;
                font-size: 13px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 64px;
            }

            .search-area {
                display: none;
            }

            .main-nav {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: var(--primary);
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 20px;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
                box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
                display: none;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                padding: 12px 16px;
                border-radius: 12px;
                font-size: 15px;
            }

            .nav-toggle {
                display: flex;
            }

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

            .page-hero .container {
                flex-direction: column;
                gap: 32px;
            }

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

            .page-hero p {
                font-size: 15px;
            }

            .page-hero-image {
                max-width: 100%;
            }

            .page-hero-image img {
                height: 220px;
            }

            .section {
                --spacing-section: 56px;
            }

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

            .split-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .split-image img {
                height: 260px;
            }

            .safety-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .stat-number {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .method-grid {
                grid-template-columns: 1fr;
            }

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

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

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

            .safety-stats {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-card {
                padding: 16px 12px;
            }

            .brand {
                font-size: 16px;
            }

            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .section-header h2 {
                font-size: 23px;
            }

            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }

            .faq-answer-inner {
                padding: 12px 18px 16px;
                margin: 0 18px 0;
                font-size: 14px;
            }
        }

        /* Focus accessibility */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
            border-radius: 6px;
        }

        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: category2 */
:root {
            --primary: #0d1b3e;
            --primary-light: #1a2f55;
            --primary-dark: #070f24;
            --accent: #f0b90b;
            --accent-dark: #d4a008;
            --accent-light: rgba(240, 185, 11, 0.14);
            --bg: #f4f7fc;
            --bg-deep: #0a1428;
            --card-bg: #ffffff;
            --text: #16203a;
            --text-muted: #5f6f88;
            --border: #e2e9f2;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 12px 32px rgba(13, 27, 62, 0.08);
            --shadow-hover: 0 18px 44px rgba(13, 27, 62, 0.14);
            --transition: all 0.3s ease;
            --header-h: 76px;
            --container: 1240px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }

        button,
        input {
            font-family: inherit;
            font-size: inherit;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header ===== */
        .site-header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 20px rgba(13, 27, 62, 0.05);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            min-height: var(--header-h);
            padding-top: 10px;
            padding-bottom: 10px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent) 0%, #ffd64d 100%);
            color: var(--primary);
            font-size: 20px;
            font-weight: 800;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            box-shadow: 0 4px 14px rgba(240, 185, 11, 0.35);
        }

        .brand-text {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .header-search {
            flex: 1;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
        }

        .header-search .search-icon {
            position: absolute;
            left: 16px;
            top: 50%;
            transform: translateY(-50%);
            width: 18px;
            height: 18px;
            color: var(--text-muted);
            pointer-events: none;
        }

        .header-search input {
            width: 100%;
            height: 46px;
            border: 2px solid var(--border);
            border-radius: 999px;
            padding: 0 20px 0 46px;
            background: var(--bg);
            font-size: 14px;
            color: var(--text);
            outline: none;
            transition: var(--transition);
        }

        .header-search input::placeholder {
            color: #9aabbd;
        }

        .header-search input:focus {
            border-color: var(--accent);
            background: #fff;
            box-shadow: 0 0 0 4px var(--accent-light);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            border: 1px solid var(--border);
            border-radius: 10px;
            background: #fff;
            cursor: pointer;
            padding: 0 10px;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .nav-toggle:hover {
            border-color: var(--accent);
        }

        .nav-toggle .bar {
            display: block;
            width: 100%;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
            transition: var(--transition);
        }

        .nav-toggle.active .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.active .bar:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.active .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .main-nav {
            border-top: 1px solid var(--border);
            background: #fff;
        }

        .nav-inner {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 16px 22px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            position: relative;
            border-bottom: 2px solid transparent;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(13, 27, 62, 0.03);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
            border-bottom-color: var(--accent);
        }

        .nav-link:focus-visible,
        .btn:focus-visible,
        .feature-card:focus-visible {
            outline: 3px solid rgba(240, 185, 11, 0.5);
            outline-offset: 2px;
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(240, 185, 11, 0.35);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.55);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .btn-dark {
            background: var(--primary);
            color: #fff;
        }

        .btn-dark:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(13, 27, 62, 0.3);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            background: var(--bg-deep);
            padding: 110px 0 100px;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            opacity: 0.4;
            animation: kenburns 18s ease-in-out infinite alternate;
        }

        @keyframes kenburns {
            0% {
                transform: scale(1);
            }
            100% {
                transform: scale(1.05);
            }
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(7, 15, 36, 0.94) 0%, rgba(13, 27, 62, 0.82) 55%, rgba(240, 185, 11, 0.18) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
            max-width: 860px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            padding: 8px 20px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 1px;
            margin-bottom: 28px;
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            background: var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 0 4px rgba(240, 185, 11, 0.3);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% {
                box-shadow: 0 0 0 3px rgba(240, 185, 11, 0.35);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(240, 185, 11, 0);
            }
        }

        .hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }

        .hero h1 span {
            color: var(--accent);
        }

        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 640px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }

        .hero-metrics {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: rgba(255, 255, 255, 0.07);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 30px 24px;
        }

        .hero-metric {
            text-align: center;
        }

        .hero-metric .num {
            display: block;
            font-size: 34px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero-metric .label {
            display: block;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 6px;
            letter-spacing: 0.5px;
        }

        /* ===== Section ===== */
        .section-padding {
            padding: 90px 0;
        }

        .section-head {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }

        .section-tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 999px;
            background: var(--accent-light);
            color: #a9820a;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: #fff;
            border-bottom: 1px solid var(--border);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .stat-card {
            background: var(--bg);
            border-radius: var(--radius);
            padding: 32px 28px;
            text-align: center;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .stat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), transparent);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }

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

        .stat-card:hover::after {
            transform: scaleX(1);
        }

        .stat-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: var(--accent-light);
            color: var(--accent-dark);
        }

        .stat-icon svg {
            width: 26px;
            height: 26px;
        }

        .stat-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
        }

        .stat-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== Features Grid ===== */
        .features-section {
            background: var(--bg);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .feature-card {
            background: var(--card-bg);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
            display: block;
        }

        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(240, 185, 11, 0.4);
        }

        .feature-img {
            position: relative;
            height: 200px;
            overflow: hidden;
        }

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

        .feature-card:hover .feature-img img {
            transform: scale(1.06);
        }

        .feature-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(13, 27, 62, 0.35), transparent 60%);
        }

        .feature-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(6px);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
        }

        .feature-body {
            padding: 24px 24px 28px;
        }

        .feature-body h3 {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .feature-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-dark);
        }

        .feature-link svg {
            width: 16px;
            height: 16px;
            transition: transform 0.3s ease;
        }

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

        /* ===== Deep Dive ===== */
        .deepdive-section {
            background: #fff;
        }

        .deepdive-grid {
            display: grid;
            gap: 60px;
        }

        .deepdive-item {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .deepdive-item.reverse .deepdive-text {
            order: 2;
        }

        .deepdive-item.reverse .deepdive-media {
            order: 1;
        }

        .deepdive-media {
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow);
            position: relative;
        }

        .deepdive-media img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .deepdive-media:hover img {
            transform: scale(1.04);
        }

        .deepdive-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--accent-dark);
            background: var(--accent-light);
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
        }

        .deepdive-text h3 {
            font-size: 28px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.4;
            margin-bottom: 14px;
        }

        .deepdive-text p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.9;
            margin-bottom: 20px;
        }

        .deepdive-feats {
            display: grid;
            gap: 10px;
        }

        .deepdive-feats li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text);
        }

        .deepdive-feats li svg {
            width: 18px;
            height: 18px;
            color: var(--accent-dark);
            flex-shrink: 0;
        }

        /* ===== Process ===== */
        .process-section {
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
        }

        .process-section::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -200px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(240, 185, 11, 0.15), transparent 70%);
        }

        .process-section .section-head h2 {
            color: #fff;
        }

        .process-section .section-head p {
            color: rgba(255, 255, 255, 0.7);
        }

        .process-section .section-tag {
            background: rgba(240, 185, 11, 0.18);
            color: var(--accent);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
            z-index: 1;
        }

        .process-step {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-6px);
            border-color: rgba(240, 185, 11, 0.3);
        }

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 46px;
            height: 46px;
            border-radius: 50%;
            background: var(--accent);
            color: var(--primary);
            font-size: 18px;
            font-weight: 800;
            margin-bottom: 18px;
            box-shadow: 0 6px 20px rgba(240, 185, 11, 0.35);
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .process-step p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
        }

        /* ===== Hot Picks ===== */
        .hotpicks-section {
            background: var(--bg);
            overflow: hidden;
        }

        .hotpicks-track {
            display: flex;
            gap: 24px;
            overflow-x: auto;
            padding: 8px 4px 24px;
            scroll-snap-type: x mandatory;
            scrollbar-width: thin;
            scrollbar-color: var(--accent) var(--border);
        }

        .hotpicks-track::-webkit-scrollbar {
            height: 8px;
        }

        .hotpicks-track::-webkit-scrollbar-track {
            background: var(--border);
            border-radius: 4px;
        }

        .hotpicks-track::-webkit-scrollbar-thumb {
            background: var(--accent);
            border-radius: 4px;
        }

        .hotpick-card {
            flex: 0 0 300px;
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            scroll-snap-align: start;
            transition: var(--transition);
        }

        .hotpick-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .hotpick-img {
            height: 150px;
            position: relative;
            overflow: hidden;
        }

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

        .hotpick-card:hover .hotpick-img img {
            transform: scale(1.06);
        }

        .hotpick-rank {
            position: absolute;
            bottom: 10px;
            left: 12px;
            background: rgba(13, 27, 62, 0.8);
            backdrop-filter: blur(6px);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 999px;
            letter-spacing: 0.5px;
        }

        .hotpick-rank span {
            color: var(--accent);
        }

        .hotpick-body {
            padding: 18px 20px 22px;
        }

        .hotpick-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .hotpick-body p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: grid;
            gap: 16px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--bg);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(240, 185, 11, 0.45);
        }

        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 22px 26px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            text-align: left;
            transition: var(--transition);
        }

        .faq-question .icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--accent-light);
            color: var(--accent-dark);
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-answer-inner {
            padding: 0 26px 24px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -100px;
            left: -100px;
            width: 300px;
            height: 300px;
            background: rgba(240, 185, 11, 0.1);
            border-radius: 50%;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: -60px;
            width: 240px;
            height: 240px;
            background: rgba(240, 185, 11, 0.08);
            border-radius: 50%;
        }

        .cta-content {
            text-align: center;
            color: #fff;
            position: relative;
            z-index: 1;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.8);
            font-size: 16px;
            margin-bottom: 32px;
            line-height: 1.8;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 70px 0 0;
            font-size: 14px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 50px;
        }

        .footer-brand .brand {
            margin-bottom: 16px;
            display: inline-flex;
        }

        .footer-brand .brand-text {
            color: #fff;
        }

        .footer-brand p {
            line-height: 1.8;
            margin-top: 14px;
            max-width: 280px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
        }

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-col p {
            line-height: 1.8;
            margin-bottom: 8px;
            color: rgba(255, 255, 255, 0.65);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .hero h1 {
                font-size: 36px;
            }

            .deepdive-item {
                gap: 32px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --header-h: 62px;
            }

            .header-inner {
                flex-wrap: wrap;
                gap: 10px;
                padding-top: 14px;
                padding-bottom: 14px;
            }

            .brand-text {
                font-size: 15px;
            }

            .brand-icon {
                width: 34px;
                height: 34px;
                font-size: 17px;
            }

            .nav-toggle {
                display: flex;
            }

            .header-search {
                order: 4;
                max-width: 100%;
                width: 100%;
                margin-top: 2px;
            }

            .main-nav {
                display: none;
                width: 100%;
                border-top: 1px solid var(--border);
                background: #fff;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            }

            .main-nav.open {
                display: block;
            }

            .nav-inner {
                flex-direction: column;
                align-items: stretch;
                padding: 8px 0;
            }

            .nav-link {
                padding: 14px 24px;
                border-bottom: 1px solid var(--border);
                border-left: 3px solid transparent;
            }

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

            .nav-link.active {
                border-left-color: var(--accent);
                border-bottom-color: var(--border);
                background: var(--accent-light);
            }

            .hero {
                padding: 80px 0;
            }

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

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

            .hero-metrics {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
                padding: 24px 16px;
            }

            .hero-metric .num {
                font-size: 28px;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .section-padding {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .deepdive-item {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .deepdive-item.reverse .deepdive-text,
            .deepdive-item.reverse .deepdive-media {
                order: 0;
            }

            .deepdive-media img {
                height: 240px;
            }

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .cta-content h2 {
                font-size: 27px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .brand-text {
                font-size: 14px;
                letter-spacing: 0;
            }

            .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }

            .hero h1 {
                font-size: 24px;
            }

            .hero-desc {
                font-size: 14px;
            }

            .hero-metrics {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding: 18px 12px;
            }

            .hero-metric .num {
                font-size: 24px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }

            .btn {
                width: 100%;
                text-align: center;
            }

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

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

            .stats-section {
                padding: 48px 0;
            }

            .stat-card {
                padding: 24px 20px;
            }

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

            .hotpick-card {
                flex-basis: 260px;
            }

            .faq-question {
                padding: 18px 18px;
                font-size: 14px;
            }

            .faq-answer-inner {
                padding: 0 18px 20px;
            }

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

            .footer-col a,
            .footer-col p {
                font-size: 13px;
            }
        }

/* roulang page: category3 */
:root {
    --primary: #6c5ce7;
    --primary-dark: #5a4bd4;
    --primary-light: #edeafe;
    --accent: #f5c542;
    --dark: #0d0e1a;
    --dark-2: #171a30;
    --bg: #f5f6fb;
    --card: #ffffff;
    --text: #1c1f36;
    --muted: #6a7085;
    --border: #e6e8f2;
    --radius: 18px;
    --radius-sm: 10px;
    --shadow: 0 8px 30px rgba(20, 20, 60, .08);
    --shadow-lg: 0 20px 60px rgba(20, 20, 60, .13);
    --transition: all .3s ease;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-size: 16px;
}
img {
    max-width: 100%;
    display: block;
}
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}
ul, ol {
    list-style: none;
}
button, input {
    font-family: inherit;
    border: none;
    outline: none;
    background: none;
}
.container {
    width: min(1200px, 92%);
    margin-inline: auto;
}
::selection {
    background: var(--primary);
    color: #fff;
}

/* ===== Top Bar ===== */
.topbar {
    background: var(--dark);
    color: rgba(255, 255, 255, .82);
    font-size: 13px;
    padding: 8px 0;
    letter-spacing: .4px;
}
.topbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}
.topbar .tb-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ===== Header ===== */
.site-header {
    background: #fff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 99;
    box-shadow: 0 4px 20px rgba(20, 20, 60, .04);
}
.header-main {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: 24px;
    padding: 16px 0;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: var(--text);
    white-space: nowrap;
}
.brand-icon {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), #a29bfe);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 6px 16px rgba(108, 92, 231, .35);
}
.header-search {
    flex: 1;
    max-width: 520px;
    display: flex;
    align-items: center;
    background: var(--bg);
    border: 1.5px solid var(--border);
    border-radius: 50px;
    padding: 6px 6px 6px 18px;
    transition: var(--transition);
    margin-inline: auto;
    width: 100%;
}
.header-search:focus-within {
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(108, 92, 231, .12);
}
.header-search svg {
    width: 18px;
    height: 18px;
    stroke: var(--muted);
    flex-shrink: 0;
}
.header-search input {
    flex: 1;
    border: none;
    background: transparent;
    padding: 8px 12px;
    font-size: 14px;
    color: var(--text);
    min-width: 0;
}
.header-search input::placeholder {
    color: var(--muted);
}
.header-search .search-btn {
    background: var(--primary);
    color: #fff;
    border-radius: 50px;
    padding: 8px 20px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.header-search .search-btn:hover {
    background: var(--primary-dark);
}
.header-support {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    white-space: nowrap;
}
.header-support svg {
    width: 34px;
    height: 34px;
    stroke: var(--primary);
}
.header-support small {
    display: block;
    color: var(--muted);
    font-size: 12px;
    line-height: 1.4;
}
.header-support strong {
    font-size: 14px;
    line-height: 1.4;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    cursor: pointer;
}
.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

/* ===== Main Nav ===== */
.main-nav {
    border-top: 1px solid var(--border);
    background: #fff;
}
.nav-inner {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0;
}
.main-nav .nav-link {
    display: inline-flex;
    align-items: center;
    padding: 14px 20px;
    font-size: 15px;
    font-weight: 600;
    color: var(--muted);
    border-bottom: 3px solid transparent;
    transition: var(--transition);
    margin-bottom: -1px;
    white-space: nowrap;
}
.main-nav .nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}
.main-nav .nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
    background: var(--primary-light);
}

/* ===== Page Hero ===== */
.page-hero {
    position: relative;
    background-size: cover;
    background-position: center;
    padding: 96px 0 110px;
    color: #fff;
    text-align: center;
    isolation: isolate;
    overflow: hidden;
}
.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13, 14, 26, .92), rgba(70, 50, 130, .78));
    z-index: -1;
}
.page-hero::after {
    content: "";
    position: absolute;
    width: 480px;
    height: 480px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, .35), transparent 65%);
    top: -160px;
    right: -100px;
    z-index: -1;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, .12);
    border: 1px solid rgba(255, 255, 255, .25);
    border-radius: 50px;
    padding: 8px 22px;
    font-size: 14px;
    letter-spacing: .5px;
    backdrop-filter: blur(4px);
    margin-bottom: 24px;
}
.hero-badge .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px var(--accent);
}
.page-hero h1 {
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: 1px;
}
.page-hero h1 .gradient {
    background: linear-gradient(90deg, var(--accent), #ffd97a);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-sub {
    max-width: 640px;
    margin: 0 auto 36px;
    font-size: 17px;
    color: rgba(255, 255, 255, .85);
    line-height: 1.8;
}
.hero-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 44px;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 34px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition);
    border: 1.5px solid transparent;
}
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 8px 24px rgba(108, 92, 231, .35);
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(108, 92, 231, .45);
}
.btn-ghost {
    background: rgba(255, 255, 255, .08);
    color: #fff;
    border-color: rgba(255, 255, 255, .4);
}
.btn-ghost:hover {
    background: rgba(255, 255, 255, .16);
    border-color: #fff;
    transform: translateY(-2px);
}
.btn-light {
    background: #fff;
    color: var(--primary-dark);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .18);
}
.btn-light:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, .24);
}
.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, .6);
}
.btn-outline:hover {
    background: rgba(255, 255, 255, .12);
    border-color: #fff;
    transform: translateY(-2px);
}

/* ===== Countdown ===== */
.hero-countdown {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, .08);
    border: 1px solid rgba(255, 255, 255, .18);
    backdrop-filter: blur(8px);
    border-radius: 22px;
    padding: 20px 30px;
}
.countdown-label {
    font-size: 13px;
    color: rgba(255, 255, 255, .75);
    letter-spacing: 2px;
    margin-bottom: 12px;
}
.countdown {
    display: flex;
    align-items: center;
    gap: 8px;
}
.cd-item {
    background: rgba(255, 255, 255, .1);
    border-radius: 14px;
    padding: 10px 12px;
    min-width: 60px;
    text-align: center;
}
.cd-item strong {
    display: block;
    font-size: 26px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
}
.cd-item span {
    font-size: 12px;
    color: rgba(255, 255, 255, .7);
}
.cd-sep {
    color: rgba(255, 255, 255, .5);
    font-weight: 800;
    font-size: 22px;
}

/* ===== Section ===== */
.section {
    padding: 84px 0;
}
.section-alt {
    background: #fff;
}
.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 48px;
}
.section-tag {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    border-radius: 50px;
    padding: 6px 16px;
    margin-bottom: 14px;
    letter-spacing: .5px;
}
.section-head h2 {
    font-size: clamp(26px, 3.5vw, 38px);
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 12px;
}
.section-head p {
    color: var(--muted);
    font-size: 16px;
    line-height: 1.7;
}

/* ===== Feature Cards ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.feature-card {
    background: var(--card);
    border-radius: var(--radius);
    padding: 32px 26px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::after {
    content: "";
    position: absolute;
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: var(--primary-light);
    top: -30px;
    right: -30px;
    opacity: .6;
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.feature-card:hover::after {
    transform: scale(1.4);
    opacity: .3;
}
.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), #a29bfe);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 18px;
    box-shadow: 0 8px 20px rgba(108, 92, 231, .3);
    color: #fff;
    position: relative;
    z-index: 1;
}
.feature-icon svg {
    width: 26px;
    height: 26px;
    stroke: #fff;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}
.feature-tag {
    display: inline-block;
    font-size: 12px;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 50px;
    padding: 4px 12px;
    font-weight: 600;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}
.feature-card p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
    position: relative;
    z-index: 1;
}

/* ===== Horizontal Scroll Cards ===== */
.scroll-section {
    background: var(--dark);
    color: #fff;
    position: relative;
    overflow: hidden;
}
.scroll-section::before {
    content: "";
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, .25), transparent 65%);
    bottom: -120px;
    left: -80px;
}
.scroll-section .section-tag {
    background: rgba(255, 255, 255, .1);
    color: var(--accent);
}
.scroll-section .section-head p {
    color: rgba(255, 255, 255, .7);
}
.scroll-track {
    display: flex;
    gap: 24px;
    overflow-x: auto;
    padding: 8px 4px 24px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}
.scroll-track::-webkit-scrollbar {
    height: 8px;
}
.scroll-track::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, .25);
    border-radius: 50px;
}
.scroll-track::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, .06);
    border-radius: 50px;
}
.scroll-card {
    flex: 0 0 300px;
    scroll-snap-align: start;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    backdrop-filter: blur(6px);
}
.scroll-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 20px 40px rgba(0, 0, 0, .3);
}
.scroll-card .cover {
    height: 160px;
    overflow: hidden;
    position: relative;
}
.scroll-card .cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.scroll-card:hover .cover img {
    transform: scale(1.06);
}
.scroll-card .cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 45%, rgba(13, 14, 26, .6));
}
.scroll-card .body {
    padding: 22px;
}
.scroll-card .body .tag {
    display: inline-block;
    background: var(--accent);
    color: #1c1f36;
    font-size: 12px;
    font-weight: 700;
    border-radius: 50px;
    padding: 4px 12px;
    margin-bottom: 12px;
}
.scroll-card .body h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #fff;
}
.scroll-card .body p {
    color: rgba(255, 255, 255, .7);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 14px;
}
.scroll-card .body .more {
    color: var(--accent);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.scroll-card .body .more:hover {
    gap: 8px;
}

/* ===== Stats & Rank ===== */
.stats-rank-section {
    background: var(--bg);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-bottom: 56px;
}
.stat-item {
    background: #fff;
    border-radius: var(--radius);
    text-align: center;
    padding: 32px 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.stat-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.stat-item strong {
    display: block;
    font-size: 38px;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), #a29bfe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    margin-bottom: 6px;
}
.stat-item span {
    color: var(--muted);
    font-size: 14px;
}
.rank-box {
    background: var(--dark);
    border-radius: 24px;
    padding: 40px;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.rank-box::before {
    content: "";
    position: absolute;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, .3), transparent 70%);
    top: -60px;
    right: -40px;
}
.rank-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
    gap: 16px;
    flex-wrap: wrap;
}
.rank-head h3 {
    font-size: 22px;
    font-weight: 800;
}
.rank-head span {
    color: rgba(255, 255, 255, .6);
    font-size: 13px;
}
.rank-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.rank-item {
    display: grid;
    grid-template-columns: 40px 1fr 2fr 60px;
    align-items: center;
    gap: 16px;
    background: rgba(255, 255, 255, .06);
    border: 1px solid rgba(255, 255, 255, .08);
    border-radius: 14px;
    padding: 14px 18px;
    transition: var(--transition);
}
.rank-item:hover {
    background: rgba(255, 255, 255, .1);
}
.rank-no {
    font-size: 18px;
    font-weight: 800;
    color: var(--accent);
    text-align: center;
}
.rank-name {
    font-size: 15px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.rank-bar {
    background: rgba(255, 255, 255, .12);
    border-radius: 50px;
    height: 8px;
    overflow: hidden;
}
.rank-bar i {
    display: block;
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 50px;
}
.rank-score {
    text-align: right;
    font-size: 18px;
    font-weight: 800;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
}

/* ===== Process ===== */
.process-section {
    background: #fff;
}
.process-steps {
    display: flex;
    align-items: flex-start;
    gap: 0;
    margin-top: 20px;
}
.step {
    flex: 1;
    text-align: center;
    padding: 24px 18px;
    position: relative;
}
.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: 18px;
    background: linear-gradient(135deg, var(--primary), #a29bfe);
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    box-shadow: 0 8px 20px rgba(108, 92, 231, .3);
    margin-bottom: 18px;
}
.step h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}
.step p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
    max-width: 220px;
    margin-inline: auto;
}
.step-line {
    width: 60px;
    height: 2px;
    background: var(--border);
    margin-top: 52px;
    position: relative;
    flex-shrink: 0;
}
.step-line::after {
    content: "";
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    top: -3px;
    right: 0;
}

/* ===== Article List ===== */
.article-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.article-item {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 24px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 18px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.article-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
    border-color: var(--primary);
}
.article-cover {
    border-radius: 12px;
    overflow: hidden;
    height: 170px;
}
.article-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.article-item:hover .article-cover img {
    transform: scale(1.05);
}
.article-info {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 4px 8px 4px 0;
}
.article-info .tag {
    align-self: flex-start;
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    border-radius: 50px;
    padding: 4px 12px;
    margin-bottom: 10px;
}
.article-info h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.4;
}
.article-info h3 a:hover {
    color: var(--primary);
}
.article-info p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.article-meta {
    font-size: 13px;
    color: var(--muted);
    display: flex;
    gap: 16px;
    align-items: center;
}

/* ===== FAQ ===== */
.faq-section {
    background: var(--bg);
}
.faq-list {
    max-width: 780px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.faq-item {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 0;
    overflow: hidden;
    transition: var(--transition);
}
.faq-item[open] {
    box-shadow: var(--shadow);
    border-color: var(--primary);
}
.faq-item summary {
    display: flex;
    align-items: center;
    gap: 14px;
    cursor: pointer;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    list-style: none;
    transition: var(--transition);
    position: relative;
}
.faq-item summary::-webkit-details-marker {
    display: none;
}
.faq-item summary .q-num {
    width: 32px;
    height: 32px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 800;
    flex-shrink: 0;
}
.faq-item summary::after {
    content: "+";
    font-size: 24px;
    color: var(--muted);
    margin-left: auto;
    transition: var(--transition);
    font-weight: 300;
}
.faq-item[open] summary::after {
    transform: rotate(45deg);
    color: var(--primary);
}
.faq-content {
    padding: 0 24px 22px 70px;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.8;
}

/* ===== CTA ===== */
.cta-section {
    position: relative;
    background-size: cover;
    background-position: center;
    padding: 90px 0;
    text-align: center;
    color: #fff;
    isolation: isolate;
}
.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13, 14, 26, .9), rgba(80, 60, 150, .82));
    z-index: -1;
}
.cta-section h2 {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    margin-bottom: 14px;
}
.cta-section p {
    color: rgba(255, 255, 255, .85);
    font-size: 16px;
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.8;
}
.cta-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== Footer ===== */
.site-footer {
    background: var(--dark);
    color: rgba(255, 255, 255, .75);
    padding: 64px 0 0;
    font-size: 14px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(255, 255, 255, .08);
}
.footer-brand .brand {
    color: #fff;
    margin-bottom: 16px;
}
.footer-brand p {
    color: rgba(255, 255, 255, .6);
    line-height: 1.8;
    margin-top: 14px;
    max-width: 300px;
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.footer-col a {
    display: block;
    color: rgba(255, 255, 255, .65);
    padding: 5px 0;
    transition: var(--transition);
}
.footer-col a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-col p {
    margin-bottom: 8px;
    color: rgba(255, 255, 255, .55);
    line-height: 1.8;
}
.footer-bottom {
    padding: 20px 0;
    text-align: center;
    color: rgba(255, 255, 255, .45);
    font-size: 13px;
}

/* ===== Focus ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
    outline: 3px solid rgba(108, 92, 231, .5);
    outline-offset: 2px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .header-main {
        grid-template-columns: 1fr auto;
        gap: 14px;
    }
    .header-search {
        grid-column: 1 / -1;
        order: 3;
        max-width: none;
    }
    .header-support {
        display: none;
    }
    .process-steps {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    .step {
        flex: 1 1 200px;
        max-width: 240px;
    }
    .step-line {
        display: none;
    }
}
@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    .nav-toggle {
        display: flex;
    }
    .main-nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        box-shadow: 0 20px 40px rgba(0, 0, 0, .12);
        transform: translateY(-130%);
        transition: transform .35s ease;
        z-index: 98;
        border-top: 1px solid var(--border);
        max-height: calc(100vh - 70px);
        overflow-y: auto;
    }
    .main-nav.nav-open {
        transform: translateY(0);
    }
    .nav-inner {
        flex-direction: column;
        align-items: stretch;
        padding: 12px 0;
    }
    .main-nav .nav-link {
        padding: 16px 24px;
        border-bottom: 1px solid var(--border);
        border-left: 3px solid transparent;
        margin: 0;
        white-space: normal;
    }
    .main-nav .nav-link.active {
        border-bottom-color: var(--border);
        border-left-color: var(--primary);
        background: var(--primary-light);
    }
    .topbar .tb-right {
        display: none;
    }
    .article-item {
        grid-template-columns: 1fr;
    }
    .article-cover {
        height: 210px;
    }
    .page-hero {
        padding: 64px 0 80px;
    }
    .hero-countdown {
        padding: 16px 16px;
        width: 100%;
        max-width: 420px;
    }
    .cd-item {
        min-width: 48px;
        padding: 8px;
    }
    .rank-item {
        grid-template-columns: 32px 1fr 1.2fr 44px;
        gap: 10px;
        padding: 12px;
    }
    .rank-name {
        font-size: 13px;
    }
    .stats-grid {
        gap: 16px;
    }
}
@media (max-width: 520px) {
    body {
        font-size: 15px;
    }
    .brand-text {
        font-size: 16px;
    }
    .brand-icon {
        width: 36px;
        height: 36px;
        border-radius: 12px;
        font-size: 16px;
    }
    .card-grid {
        grid-template-columns: 1fr;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .faq-content {
        padding: 0 18px 18px 18px;
    }
    .faq-item summary {
        padding: 16px 18px;
    }
    .btn {
        padding: 12px 26px;
        font-size: 14px;
        width: 100%;
    }
    .hero-actions,
    .cta-actions {
        flex-direction: column;
        width: 100%;
    }
    .hero-actions .btn,
    .cta-actions .btn {
        width: 100%;
    }
    .cd-item {
        min-width: 42px;
    }
    .cd-item strong {
        font-size: 22px;
    }
    .stats-grid {
        gap: 12px;
    }
    .stat-item {
        padding: 20px 12px;
    }
    .stat-item strong {
        font-size: 28px;
    }
    .rank-box {
        padding: 24px 18px;
    }
    .rank-item {
        grid-template-columns: 28px 1fr 1fr 36px;
        gap: 8px;
        padding: 10px 10px;
    }
    .rank-score {
        font-size: 15px;
    }
    .scroll-card {
        flex: 0 0 250px;
    }
    .article-info h3 {
        font-size: 17px;
    }
}