/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --bg: #f0f4f8;
    --surface: #ffffff;
    --dark: #0f172a;
    --dark-2: #1e293b;
    --dark-3: #334155;
    --text: #1e293b;
    --text-light: #64748b;
    --text-lighter: #94a3b8;
    --text-on-dark: #e2e8f0;
    --border: #e2e8f0;
    --radius-lg: 20px;
    --radius: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 10px rgba(15,23,42,0.06);
    --shadow: 0 8px 30px rgba(15,23,42,0.08);
    --shadow-lg: 0 20px 50px rgba(15,23,42,0.12);
    --sidebar-w: 264px;
    --transition: all .3s cubic-bezier(.4,0,.2,1);
}

/* ===== Reset / Base ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
    background:var(--bg);
    color:var(--text);
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
    -moz-osx-font-smoothing:grayscale;
}
a{color:inherit;text-decoration:none;transition:var(--transition)}
img{max-width:100%;display:block;border:none}
button{font-family:inherit;border:none;background:none;cursor:pointer}
input,textarea{font-family:inherit}
i{font-style:normal}
ul,ol{list-style:none}

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

/* ===== 按钮 ===== */
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    padding:14px 32px;
    border-radius:50px;
    font-size:15px;
    font-weight:600;
    letter-spacing:.3px;
    transition:var(--transition);
    text-align:center;
    white-space:nowrap;
    line-height:1.4;
}
.btn-primary{
    background:linear-gradient(135deg,#2563eb,#1d4ed8);
    color:#fff;
    box-shadow:0 6px 20px rgba(37,99,235,.35);
}
.btn-primary:hover{
    transform:translateY(-2px);
    box-shadow:0 10px 30px rgba(37,99,235,.45);
    background:linear-gradient(135deg,#1d4ed8,#1e40af);
}
.btn-ghost{
    background:rgba(255,255,255,.12);
    color:#fff;
    border:1px solid rgba(255,255,255,.25);
    backdrop-filter:blur(6px);
}
.btn-ghost:hover{
    background:rgba(255,255,255,.22);
    border-color:rgba(255,255,255,.4);
    transform:translateY(-2px);
}
.btn-accent{
    background:linear-gradient(135deg,#f59e0b,#d97706);
    color:#fff;
    box-shadow:0 6px 20px rgba(245,158,11,.35);
}
.btn-accent:hover{
    transform:translateY(-2px);
    box-shadow:0 10px 30px rgba(245,158,11,.45);
}
.btn:focus-visible{
    outline:3px solid rgba(37,99,235,.4);
    outline-offset:2px;
}

/* ===== 小节头部 ===== */
.section-head{
    margin-bottom:44px;
    max-width:640px;
}
.section-head.center{
    margin-left:auto;
    margin-right:auto;
    text-align:center;
}
.section-head.dark .section-title{color:#f8fafc}
.section-head.dark .section-desc{color:#94a3b8}
.section-tag{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:13px;
    font-weight:600;
    color:var(--primary);
    background:var(--primary-light);
    padding:6px 16px;
    border-radius:50px;
    margin-bottom:16px;
    letter-spacing:.5px;
    text-transform:uppercase;
}
.section-title{
    font-size:32px;
    font-weight:700;
    color:var(--text);
    line-height:1.35;
    letter-spacing:-.5px;
    margin-bottom:12px;
}
.section-desc{
    font-size:16px;
    color:var(--text-light);
    line-height:1.7;
}

/* ===== 侧边栏 ===== */
.sidebar{
    position:fixed;
    top:0;left:0;bottom:0;
    width:var(--sidebar-w);
    background:linear-gradient(180deg,#0f172a 0%,#1e293b 100%);
    z-index:1000;
    display:flex;
    flex-direction:column;
    transition:transform .4s cubic-bezier(.4,0,.2,1);
}
.sidebar-header{
    padding:32px 24px 24px;
    border-bottom:1px solid rgba(255,255,255,.08);
}
.brand-logo{
    display:flex;
    align-items:center;
    gap:14px;
}
.brand-icon{
    width:44px;height:44px;
    border-radius:14px;
    background:linear-gradient(135deg,#2563eb,#1e40af);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    font-weight:800;
    color:#fff;
    box-shadow:0 4px 14px rgba(37,99,235,.4);
    flex-shrink:0;
}
.brand-text{
    color:#fff;
    font-size:18px;
    font-weight:700;
    letter-spacing:.3px;
    line-height:1.3;
    white-space:nowrap;
}
.brand-text small{
    display:block;
    font-size:11px;
    color:#94a3b8;
    font-weight:400;
    letter-spacing:.5px;
    margin-top:2px;
}

.sidebar-nav{
    padding:24px 16px;
    flex:1;
    display:flex;
    flex-direction:column;
    gap:6px;
}
.nav-link{
    display:flex;
    align-items:center;
    gap:14px;
    padding:13px 18px;
    border-radius:12px;
    color:#94a3b8;
    font-size:15px;
    font-weight:500;
    transition:var(--transition);
    border:1px solid transparent;
}
.nav-link i{
    width:20px;
    text-align:center;
    font-size:16px;
}
.nav-link:hover{
    background:rgba(255,255,255,.06);
    color:#e2e8f0;
    transform:translateX(4px);
}
.nav-link.active{
    background:linear-gradient(135deg,rgba(37,99,235,.25),rgba(37,99,235,.1));
    color:#fff;
    border-color:rgba(37,99,235,.3);
    font-weight:600;
}
.nav-link.active i{color:var(--accent)}
.nav-link:focus-visible{
    outline:2px solid rgba(37,99,235,.5);
    outline-offset:2px;
}

.sidebar-search{
    padding:16px 20px 20px;
    border-top:1px solid rgba(255,255,255,.08);
}
.search-box{
    display:flex;
    align-items:center;
    gap:10px;
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.1);
    border-radius:12px;
    padding:10px 14px;
    transition:var(--transition);
}
.search-box i{
    color:#64748b;
    font-size:14px;
}
.search-box input{
    background:transparent;
    border:none;
    outline:none;
    color:#e2e8f0;
    font-size:14px;
    width:100%;
}
.search-box input::placeholder{color:#64748b}
.search-box:focus-within{
    border-color:rgba(37,99,235,.5);
    background:rgba(37,99,235,.08);
}

.sidebar-footer{
    padding:20px 24px;
    border-top:1px solid rgba(255,255,255,.08);
}
.side-status{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:13px;
    color:#94a3b8;
}
.status-dot{
    width:8px;height:8px;
    border-radius:50%;
    background:#22c55e;
    box-shadow:0 0 0 3px rgba(34,197,94,.25);
    animation:pulse 2s infinite;
}
@keyframes pulse{
    0%,100%{box-shadow:0 0 0 3px rgba(34,197,94,.25)}
    50%{box-shadow:0 0 0 6px rgba(34,197,94,.12)}
}

/* ===== 移动端头部 ===== */
.mobile-header{
    display:none;
    position:sticky;
    top:0;
    z-index:900;
    background:rgba(15,23,42,.95);
    backdrop-filter:blur(12px);
    padding:0 16px;
    height:60px;
    align-items:center;
    justify-content:space-between;
    box-shadow:0 4px 20px rgba(0,0,0,.15);
}
.menu-toggle{
    width:42px;height:42px;
    border-radius:10px;
    background:rgba(255,255,255,.08);
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-size:18px;
    transition:var(--transition);
}
.menu-toggle:hover{background:rgba(255,255,255,.16)}
.menu-toggle:focus-visible{outline:2px solid rgba(37,99,235,.5)}
.mobile-logo{
    color:#fff;
    font-size:17px;
    font-weight:700;
    letter-spacing:.3px;
}
.mobile-actions{
    width:42px;height:42px;
}
.sidebar-overlay{
    display:none;
    position:fixed;
    top:0;left:0;right:0;bottom:0;
    background:rgba(15,23,42,.5);
    z-index:950;
    backdrop-filter:blur(2px);
    opacity:0;
    transition:opacity .3s;
}

/* ===== 主内容区 ===== */
.main-wrapper{
    min-height:100vh;
    margin-left:var(--sidebar-w);
    display:flex;
    flex-direction:column;
}
.page-content{
    flex:1;
}

/* ===== Hero ===== */
.hero{
    position:relative;
    background-size:cover;
    background-position:center;
    background-repeat:no-repeat;
    min-height:640px;
    display:flex;
    align-items:center;
    overflow:hidden;
}
.hero-overlay{
    position:absolute;
    inset:0;
    background:linear-gradient(135deg,rgba(15,23,42,.85) 0%,rgba(15,23,42,.65) 50%,rgba(15,23,42,.4) 100%);
}
.hero-content{
    position:relative;
    z-index:2;
    text-align:center;
    padding-top:60px;
    padding-bottom:60px;
}
.hero-badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    background:rgba(255,255,255,.1);
    border:1px solid rgba(255,255,255,.2);
    backdrop-filter:blur(8px);
    color:#f8fafc;
    font-size:14px;
    font-weight:500;
    padding:8px 20px;
    border-radius:50px;
    margin-bottom:28px;
}
.hero-badge i{
    color:var(--accent);
    font-size:14px;
}
.hero-title{
    font-size:52px;
    font-weight:800;
    color:#fff;
    letter-spacing:-1px;
    line-height:1.2;
    text-shadow:0 4px 20px rgba(0,0,0,.3);
    margin-bottom:20px;
}
.hero-title span{
    background:linear-gradient(135deg,#60a5fa,#f59e0b);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}
.hero-desc{
    font-size:18px;
    color:var(--text-on-dark);
    max-width:600px;
    margin:0 auto 36px;
    line-height:1.8;
    text-shadow:0 2px 8px rgba(0,0,0,.3);
}
.hero-actions{
    display:flex;
    justify-content:center;
    gap:16px;
    flex-wrap:wrap;
}
.hero-stats{
    display:flex;
    justify-content:center;
    gap:60px;
    margin-top:56px;
    padding-top:36px;
    border-top:1px solid rgba(255,255,255,.12);
}
.hero-stat{
    text-align:center;
}
.hero-stat .stat-num{
    font-size:32px;
    font-weight:800;
    color:#fff;
    display:block;
    line-height:1.2;
}
.hero-stat .stat-label{
    font-size:14px;
    color:#94a3b8;
    margin-top:4px;
    display:block;
}

/* ===== 指标评分 ===== */
.metrics-section{
    background:var(--dark);
    padding:80px 0;
    position:relative;
    overflow:hidden;
}
.metrics-section::before{
    content:'';
    position:absolute;
    top:-50%;right:-20%;
    width:500px;height:500px;
    background:radial-gradient(circle,rgba(37,99,235,.15),transparent 70%);
    border-radius:50%;
}
.metrics-wrap{
    position:relative;
    z-index:2;
}
.metrics-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:20px;
    margin-top:20px;
}
.metric-item{
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    border-radius:16px;
    padding:28px 24px;
    transition:var(--transition);
}
.metric-item:hover{
    background:rgba(255,255,255,.08);
    transform:translateY(-4px);
    border-color:rgba(37,99,235,.3);
}
.metric-title{
    display:flex;
    align-items:center;
    justify-content:space-between;
    margin-bottom:16px;
}
.metric-title span{
    font-size:14px;
    color:#94a3b8;
    font-weight:500;
}
.metric-title strong{
    font-size:28px;
    color:#fff;
    font-weight:800;
    background:linear-gradient(135deg,#60a5fa,#f59e0b);
    -webkit-background-clip:text;
    -webkit-text-fill-color:transparent;
}
.metric-track{
    height:6px;
    background:rgba(255,255,255,.1);
    border-radius:10px;
    overflow:hidden;
}
.metric-track span{
    display:block;
    height:100%;
    background:linear-gradient(90deg,#2563eb,#f59e0b);
    border-radius:10px;
    transition:width 1s ease;
}

/* ===== 特色板块 ===== */
.features-section{
    padding:90px 0;
    background:var(--bg);
}
.features-grid{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:60px;
    align-items:center;
}
.features-image{
    position:relative;
    border-radius:20px;
    overflow:hidden;
    box-shadow:var(--shadow-lg);
}
.features-image img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}
.features-image:hover img{
    transform:scale(1.03);
}
.features-image::after{
    content:'pg电子官方网站';
    position:absolute;
    bottom:16px;left:16px;
    background:rgba(15,23,42,.75);
    color:#fff;
    padding:8px 16px;
    border-radius:10px;
    font-size:13px;
    font-weight:600;
    backdrop-filter:blur(6px);
}
.features-content .section-title{
    font-size:30px;
}
.feature-list{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    margin-top:32px;
}
.feature-item{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:16px;
    padding:22px;
    transition:var(--transition);
    display:flex;
    gap:16px;
    align-items:flex-start;
}
.feature-item:hover{
    box-shadow:var(--shadow);
    transform:translateY(-3px);
    border-color:var(--primary);
}
.feature-icon{
    width:44px;height:44px;
    border-radius:12px;
    background:var(--primary-light);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:18px;
    color:var(--primary);
    flex-shrink:0;
}
.feature-item h4{
    font-size:15px;
    font-weight:600;
    color:var(--text);
    margin-bottom:4px;
}
.feature-item p{
    font-size:13px;
    color:var(--text-light);
    line-height:1.6;
}

/* ===== 分类入口 ===== */
.category-section{
    padding:90px 0;
    background:var(--surface);
}
.category-grid{
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px;
}
.category-card{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:18px;
    overflow:hidden;
    transition:var(--transition);
    display:block;
}
.category-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow-lg);
    border-color:var(--primary-light);
}
.category-thumb{
    position:relative;
    height:180px;
    overflow:hidden;
}
.category-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}
.category-card:hover .category-thumb img{
    transform:scale(1.05);
}
.category-thumb::after{
    content:'';
    position:absolute;
    inset:0;
    background:linear-gradient(180deg,transparent 40%,rgba(15,23,42,.3));
}
.category-body{
    padding:20px 20px 22px;
}
.category-body h3{
    font-size:17px;
    font-weight:600;
    color:var(--text);
    margin-bottom:8px;
}
.category-body p{
    font-size:14px;
    color:var(--text-light);
    line-height:1.6;
    margin-bottom:16px;
}
.category-link{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:14px;
    font-weight:600;
    color:var(--primary);
    transition:var(--transition);
}
.category-card:hover .category-link{
    color:var(--primary-hover);
    gap:12px;
}
.category-link i{
    font-size:13px;
}
.category-card:focus-visible{
    outline:3px solid rgba(37,99,235,.4);
    outline-offset:3px;
}

/* ===== 资讯列表 ===== */
.news-section{
    padding:90px 0;
    background:var(--bg);
}
.news-list{
    display:flex;
    flex-direction:column;
    gap:20px;
    max-width:860px;
    margin:0 auto;
}
.news-item{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:18px;
    overflow:hidden;
    transition:var(--transition);
}
.news-item:hover{
    box-shadow:var(--shadow);
    transform:translateX(6px);
    border-color:var(--primary-light);
}
.news-link{
    display:block;
    padding:28px 30px;
}
.news-meta{
    display:flex;
    align-items:center;
    gap:12px;
    margin-bottom:12px;
    flex-wrap:wrap;
}
.news-cat{
    display:inline-flex;
    align-items:center;
    background:var(--primary-light);
    color:var(--primary);
    font-size:13px;
    font-weight:600;
    padding:4px 14px;
    border-radius:50px;
}
.news-date{
    font-size:13px;
    color:var(--text-lighter);
}
.news-title{
    font-size:18px;
    font-weight:600;
    color:var(--text);
    line-height:1.5;
    margin-bottom:8px;
    transition:color .2s;
}
.news-item:hover .news-title{
    color:var(--primary);
}
.news-desc{
    font-size:15px;
    color:var(--text-light);
    line-height:1.7;
}
.news-link:focus-visible{
    outline:3px solid rgba(37,99,235,.4);
    outline-offset:3px;
    border-radius:18px;
}
.empty-state{
    background:var(--surface);
    border:2px dashed var(--border);
    border-radius:18px;
    padding:60px 30px;
    text-align:center;
    color:var(--text-light);
}
.empty-state i{
    font-size:36px;
    color:var(--text-lighter);
    display:block;
    margin-bottom:16px;
}
.empty-state p{
    font-size:15px;
}

/* ===== 使用流程 ===== */
.process-section{
    padding:90px 0;
    background:var(--dark);
    position:relative;
    overflow:hidden;
}
.process-section::before{
    content:'';
    position:absolute;
    bottom:-30%;left:-10%;
    width:400px;height:400px;
    background:radial-gradient(circle,rgba(37,99,235,.2),transparent 70%);
    border-radius:50%;
}
.process-section .section-head .section-title{
    color:#fff;
}
.process-section .section-head .section-desc{
    color:#94a3b8;
}
.process-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:32px;
    position:relative;
    z-index:2;
    margin-top:20px;
}
.process-step{
    background:rgba(255,255,255,.05);
    border:1px solid rgba(255,255,255,.08);
    border-radius:20px;
    padding:40px 30px;
    text-align:center;
    position:relative;
    transition:var(--transition);
}
.process-step:hover{
    background:rgba(255,255,255,.09);
    transform:translateY(-6px);
    border-color:rgba(59,130,246,.4);
}
.step-num{
    position:absolute;
    top:16px;right:20px;
    font-size:44px;
    font-weight:800;
    color:rgba(255,255,255,.08);
    line-height:1;
}
.step-icon{
    width:68px;height:68px;
    border-radius:50%;
    margin:0 auto 24px;
    background:linear-gradient(135deg,#2563eb,#1e40af);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:24px;
    color:#fff;
    box-shadow:0 8px 24px rgba(37,99,235,.4);
}
.process-step:nth-child(2) .step-icon{
    background:linear-gradient(135deg,#f59e0b,#d97706);
    box-shadow:0 8px 24px rgba(245,158,11,.4);
}
.process-step:nth-child(3) .step-icon{
    background:linear-gradient(135deg,#22c55e,#16a34a);
    box-shadow:0 8px 24px rgba(34,197,94,.4);
}
.process-step h3{
    font-size:20px;
    font-weight:700;
    color:#fff;
    margin-bottom:12px;
}
.process-step p{
    font-size:14px;
    color:#94a3b8;
    line-height:1.7;
}

/* ===== FAQ ===== */
.faq-section{
    padding:90px 0;
    background:var(--surface);
}
.faq-grid{
    display:grid;
    grid-template-columns:.8fr 1.2fr;
    gap:60px;
    align-items:flex-start;
}
.faq-list{
    display:flex;
    flex-direction:column;
    gap:14px;
}
.faq-item{
    background:var(--surface);
    border:1px solid var(--border);
    border-radius:14px;
    overflow:hidden;
    transition:var(--transition);
}
.faq-item.active{
    border-color:var(--primary);
    box-shadow:var(--shadow-sm);
}
.faq-question{
    width:100%;
    text-align:left;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:20px 24px;
    font-size:15px;
    font-weight:600;
    color:var(--text);
    background:none;
    border:none;
    cursor:pointer;
    transition:color .2s;
}
.faq-question:hover{
    color:var(--primary);
}
.faq-question i{
    color:var(--text-lighter);
    font-size:14px;
    transition:transform .3s ease;
    flex-shrink:0;
}
.faq-item.active .faq-question i{
    transform:rotate(180deg);
    color:var(--primary);
}
.faq-answer{
    max-height:0;
    overflow:hidden;
    transition:max-height .4s ease;
}
.faq-answer-inner{
    padding:0 24px 22px;
    font-size:14px;
    color:var(--text-light);
    line-height:1.8;
}
.faq-item.active .faq-answer{
    border-top:1px solid var(--border);
}
.faq-item.active .faq-answer-inner{
    padding-top:18px;
}
.faq-question:focus-visible{
    outline:3px solid rgba(37,99,235,.4);
    outline-offset:-3px;
    border-radius:14px;
}

/* ===== CTA ===== */
.cta-section{
    position:relative;
    background-size:cover;
    background-position:center;
    padding:90px 0;
    text-align:center;
    overflow:hidden;
}
.cta-overlay{
    position:absolute;
    inset:0;
    background:linear-gradient(135deg,rgba(15,23,42,.9),rgba(15,23,42,.75));
}
.cta-content{
    position:relative;
    z-index:2;
}
.cta-content h2{
    font-size:34px;
    font-weight:800;
    color:#fff;
    margin-bottom:14px;
    letter-spacing:-.5px;
}
.cta-content p{
    font-size:17px;
    color:#94a3b8;
    max-width:460px;
    margin:0 auto 32px;
}
.cta-actions{
    display:flex;
    justify-content:center;
    gap:16px;
    flex-wrap:wrap;
}

/* ===== 页脚 ===== */
.site-footer{
    background:var(--dark);
    color:#94a3b8;
    padding:60px 0 24px;
    border-top:1px solid rgba(255,255,255,.06);
}
.footer-grid{
    display:grid;
    grid-template-columns:2fr 1fr 1.2fr;
    gap:48px;
    padding-bottom:40px;
    border-bottom:1px solid rgba(255,255,255,.08);
}
.footer-logo{
    font-size:20px;
    font-weight:700;
    color:#fff;
    display:inline-block;
    margin-bottom:12px;
    letter-spacing:.3px;
}
.footer-brand p{
    font-size:14px;
    line-height:1.7;
    max-width:280px;
}
.footer-links h4,
.footer-contact h4{
    font-size:15px;
    font-weight:600;
    color:#fff;
    margin-bottom:18px;
}
.footer-links a{
    display:block;
    color:#94a3b8;
    font-size:14px;
    padding:5px 0;
    transition:var(--transition);
}
.footer-links a:hover{
    color:var(--primary);
    padding-left:8px;
}
.footer-links a:focus-visible{
    outline:2px solid rgba(37,99,235,.5);
    outline-offset:4px;
    border-radius:4px;
}
.footer-contact p{
    font-size:14px;
    line-height:1.7;
    margin-bottom:6px;
}
.footer-contact p span{
    color:#64748b;
}
.footer-bottom{
    padding-top:24px;
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:12px;
}
.footer-bottom p{
    font-size:13px;
    color:#64748b;
}
.footer-tech{
    font-size:13px;
    color:#475569;
}

/* ===== 响应式 ===== */
@media (max-width:1024px){
    .sidebar{
        transform:translateX(-100%);
        box-shadow:2px 0 30px rgba(0,0,0,.3);
    }
    .sidebar.open{
        transform:translateX(0);
    }
    .sidebar-overlay{
        display:block;
    }
    .sidebar-overlay.active{
        opacity:1;
    }
    .mobile-header{
        display:flex;
    }
    .main-wrapper{
        margin-left:0;
    }
    .metrics-grid{
        grid-template-columns:repeat(2,1fr);
    }
    .category-grid{
        grid-template-columns:repeat(2,1fr);
    }
    .features-grid{
        grid-template-columns:1fr;
        gap:40px;
    }
    .faq-grid{
        grid-template-columns:1fr;
        gap:30px;
    }
    .hero-title{
        font-size:40px;
    }
    .hero-stats{
        gap:40px;
    }
}

@media (max-width:768px){
    .container{
        padding:0 16px;
    }
    .section-title{
        font-size:26px;
    }
    .section-head{
        margin-bottom:32px;
    }
    .hero{
        min-height:520px;
    }
    .hero-title{
        font-size:32px;
    }
    .hero-desc{
        font-size:16px;
    }
    .hero-actions{
        flex-direction:column;
        align-items:center;
    }
    .hero-stats{
        gap:28px;
        flex-wrap:wrap;
        margin-top:36px;
        padding-top:28px;
    }
    .hero-stat .stat-num{
        font-size:26px;
    }
    .process-grid{
        grid-template-columns:1fr;
    }
    .footer-grid{
        grid-template-columns:1fr;
        gap:32px;
    }
    .footer-bottom{
        flex-direction:column;
        text-align:center;
    }
    .metrics-grid{
        grid-template-columns:1fr;
    }
    .category-grid{
        grid-template-columns:1fr;
    }
    .feature-list{
        grid-template-columns:1fr;
    }
    .news-link{
        padding:22px;
    }
    .tab-grid{
        grid-template-columns:1fr;
    }
}

@media (max-width:520px){
    .hero-actions .btn{
        width:100%;
        max-width:280px;
        padding:12px 24px;
        font-size:14px;
    }
    .cta-actions .btn{
        width:100%;
        max-width:280px;
    }
    .section-tag{
        font-size:12px;
        padding:5px 12px;
    }
    .hero-badge{
        font-size:13px;
        padding:6px 14px;
    }
    .hero-stats{
        gap:16px;
    }
    .hero-stat .stat-num{
        font-size:22px;
    }
    .hero-stat .stat-label{
        font-size:12px;
    }
    .metric-item{
        padding:20px 16px;
    }
    .footer-grid{
        gap:24px;
    }
    .news-item{
        border-radius:14px;
    }
    .news-meta{
        flex-direction:column;
        align-items:flex-start;
        gap:6px;
    }
}

/* roulang page: article */
:root {
            --primary: #6366f1;
            --primary-dark: #4f46e5;
            --accent: #f59e0b;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #1e293b;
            --text-alt: #475569;
            --text-light: #94a3b8;
            --border: #e2e8f0;
            --radius: 12px;
            --radius-lg: 20px;
            --shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);
            --shadow: 0 4px 20px rgba(0, 0, 0, .08);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, .12);
            --sidebar-w: 280px;
            --transition: .25s cubic-bezier(.4, 0, .2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            background: none;
            outline: none;
        }
        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 32px;
        }
        .layout {
            min-height: 100vh;
        }
        .site-sidebar {
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            width: var(--sidebar-w);
            background: linear-gradient(180deg, #0f172a 0%, #1e1b4b 100%);
            color: #cbd5e1;
            display: flex;
            flex-direction: column;
            padding: 28px 20px;
            z-index: 100;
            border-right: 1px solid rgba(255, 255, 255, .06);
            overflow-y: auto;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #fff;
            font-size: 19px;
            font-weight: 800;
            letter-spacing: .5px;
            padding: 8px 12px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .site-logo i {
            font-size: 26px;
            color: var(--accent);
        }
        .site-logo span {
            background: linear-gradient(135deg, #fff 0%, #c7d2fe 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .sidebar-nav {
            margin-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            border-radius: var(--radius);
            color: #cbd5e1;
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }
        .nav-link i {
            width: 22px;
            text-align: center;
            font-size: 17px;
            transition: transform var(--transition);
        }
        .nav-link:hover {
            background: rgba(255, 255, 255, .08);
            color: #fff;
            transform: translateX(4px);
        }
        .nav-link:hover i {
            transform: scale(1.1);
        }
        .nav-link.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 8px 24px rgba(99, 102, 241, .35);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 4px;
            height: 24px;
            border-radius: 4px 0 0 4px;
            background: var(--accent);
        }
        .sidebar-brand-card {
            margin-top: auto;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .08);
            border-radius: var(--radius);
            padding: 16px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .sidebar-brand-card i {
            font-size: 24px;
            color: var(--accent);
        }
        .sidebar-brand-card p {
            font-size: 13px;
            color: #94a3b8;
            line-height: 1.5;
        }
        .mobile-topbar {
            display: none;
            position: sticky;
            top: 0;
            z-index: 90;
            background: rgba(15, 23, 42, .98);
            backdrop-filter: blur(12px);
            padding: 14px 20px;
            align-items: center;
            justify-content: space-between;
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .mobile-logo {
            font-weight: 800;
            font-size: 17px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .mobile-logo i {
            color: var(--accent);
        }
        .nav-toggle {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .1);
            color: #fff;
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 255, 255, .2);
        }
        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, .5);
            z-index: 95;
            opacity: 0;
            transition: opacity var(--transition);
            pointer-events: none;
        }
        .sidebar-overlay.show {
            opacity: 1;
            pointer-events: auto;
        }
        .main-content {
            margin-left: var(--sidebar-w);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background: var(--bg);
        }
        .article-hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 60%, #312e81 100%);
            padding: 64px 0 72px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            opacity: .1;
        }
        .article-hero .container {
            position: relative;
            z-index: 1;
            max-width: 920px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: #94a3b8;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: #a5b4fc;
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: #fff;
        }
        .breadcrumb i {
            font-size: 11px;
            color: #64748b;
        }
        .article-hero h1 {
            font-size: clamp(26px, 4vw, 40px);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 18px;
            letter-spacing: .5px;
            color: #fff;
        }
        .article-hero-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px 20px;
            font-size: 14px;
            color: #a5b4fc;
        }
        .meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .meta-item i {
            font-size: 14px;
            color: var(--accent);
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .15);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: #e0e7ff;
            backdrop-filter: blur(8px);
        }
        .article-main {
            padding: 0 0 24px;
            position: relative;
            z-index: 2;
        }
        .article-container {
            max-width: 920px;
            margin: -40px auto 0;
            padding: 0 32px;
        }
        .article-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            border: 1px solid rgba(226, 232, 240, .7);
        }
        .article-cover-wrap {
            position: relative;
            height: 320px;
            overflow: hidden;
            background: #eef2ff;
        }
        .article-cover-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .article-cover-wrap:hover img {
            transform: scale(1.03);
        }
        .article-cover-wrap::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(15, 23, 42, .5));
        }
        .article-cover-tag {
            position: absolute;
            top: 20px;
            left: 20px;
            z-index: 2;
            background: rgba(15, 23, 42, .85);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .5px;
            border: 1px solid rgba(255, 255, 255, .15);
        }
        .article-body {
            padding: 40px 48px 32px;
        }
        .article-body p {
            margin-bottom: 20px;
            color: var(--text-alt);
            font-size: 16px;
            line-height: 1.9;
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--text);
            margin: 40px 0 16px;
            position: relative;
            padding-left: 18px;
        }
        .article-body h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 5px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            margin: 28px 0 12px;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 20px;
            padding-left: 24px;
            color: var(--text-alt);
        }
        .article-body ul li,
        .article-body ol li {
            margin-bottom: 8px;
            position: relative;
        }
        .article-body blockquote {
            margin: 28px 0;
            padding: 20px 24px;
            background: #eef2ff;
            border-left: 4px solid var(--primary);
            border-radius: 0 var(--radius) var(--radius) 0;
            color: var(--text-alt);
            font-style: italic;
        }
        .article-body img {
            border-radius: var(--radius);
            margin: 24px 0;
            box-shadow: var(--shadow);
        }
        .article-body a {
            color: var(--primary);
            font-weight: 500;
            border-bottom: 1px solid transparent;
            transition: var(--transition);
        }
        .article-body a:hover {
            border-bottom-color: var(--primary);
        }
        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
            padding: 20px 48px 24px;
            border-top: 1px solid var(--border);
        }
        .article-tags .tags-label {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 600;
            margin-right: 4px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            background: #f1f5f9;
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-alt);
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-chip:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(99, 102, 241, .3);
        }
        .article-footer-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 48px 32px;
            border-top: 1px solid var(--border);
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 16px rgba(99, 102, 241, .3);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(99, 102, 241, .4);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--border);
            color: var(--text-alt);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: #eef2ff;
        }
        .share-box {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .share-box span {
            font-size: 14px;
            color: var(--text-light);
            font-weight: 500;
        }
        .share-btn {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: #f1f5f9;
            border: 1px solid var(--border);
            color: var(--text-alt);
            transition: var(--transition);
            font-size: 14px;
        }
        .share-btn:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .article-missing {
            text-align: center;
            padding: 80px 48px;
            background: var(--surface);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
        }
        .article-missing i {
            font-size: 56px;
            color: var(--text-light);
            margin-bottom: 20px;
            display: block;
        }
        .article-missing h1 {
            font-size: 28px;
            font-weight: 800;
            margin-bottom: 12px;
            color: var(--text);
        }
        .article-missing p {
            color: var(--text-light);
            margin-bottom: 24px;
        }
        .related-section {
            padding: 64px 0 48px;
            background: var(--bg);
        }
        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .section-header h2 {
            font-size: 28px;
            font-weight: 800;
            color: var(--text);
            position: relative;
            padding-bottom: 12px;
        }
        .section-header h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 4px;
            border-radius: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
            border-color: rgba(99, 102, 241, .3);
        }
        .related-thumb {
            height: 160px;
            overflow: hidden;
            position: relative;
            background: #eef2ff;
        }
        .related-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }
        .related-card:hover .related-thumb img {
            transform: scale(1.06);
        }
        .related-cat {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(15, 23, 42, .8);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(8px);
            letter-spacing: .5px;
        }
        .related-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .related-body h3 {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 48px;
        }
        .related-body p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-body time {
            font-size: 12px;
            color: var(--text-light);
            margin-top: auto;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .empty-text {
            text-align: center;
            padding: 40px;
            color: var(--text-light);
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
        }
        .faq-section {
            padding: 64px 0;
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 32px;
        }
        .faq-item {
            background: #f8fafc;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
            position: relative;
        }
        .faq-item:hover {
            border-color: rgba(99, 102, 241, .3);
            box-shadow: var(--shadow);
        }
        .faq-item h3 {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
        .faq-item h3 i {
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }
        .faq-item p {
            color: var(--text-alt);
            font-size: 14px;
            line-height: 1.75;
            padding-left: 30px;
        }
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(135deg, rgba(15, 23, 42, .94), rgba(30, 27, 75, .88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(99, 102, 241, .15);
            filter: blur(80px);
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
        }
        .cta-section h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: .5px;
        }
        .cta-section p {
            color: #c7d2fe;
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 16px 36px;
            border-radius: var(--radius);
            background: linear-gradient(135deg, var(--accent), #fbbf24);
            color: #0f172a;
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 8px 24px rgba(245, 158, 11, .35);
            transition: var(--transition);
        }
        .cta-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 32px rgba(245, 158, 11, .45);
        }
        .site-footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 56px 0 24px;
            margin-top: auto;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .footer-logo i {
            color: var(--accent);
            font-size: 24px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 16px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-links h4::after,
        .footer-contact h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 3px;
            border-radius: 4px;
            background: var(--accent);
        }
        .footer-links a {
            display: block;
            padding: 6px 0;
            color: #94a3b8;
            font-size: 14px;
            transition: var(--transition);
        }
        .footer-links a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            padding: 6px 0;
            color: #94a3b8;
        }
        .footer-contact p span {
            color: #64748b;
            min-width: 64px;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 24px;
            font-size: 13px;
            color: #64748b;
        }
        .footer-tech {
            color: #475569;
        }
        @media (max-width: 1024px) {
            .related-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 16px;
            }
            .article-body {
                padding: 32px 32px 24px;
            }
            .article-tags,
            .article-footer-bar {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        @media (max-width: 900px) {
            .site-sidebar {
                transform: translateX(-100%);
                transition: transform .3s ease;
                width: 280px;
                box-shadow: 4px 0 30px rgba(0, 0, 0, .2);
            }
            .site-sidebar.open {
                transform: translateX(0);
            }
            .main-content {
                margin-left: 0;
            }
            .mobile-topbar {
                display: flex;
            }
            .sidebar-overlay.show {
                display: block;
            }
            .article-hero {
                padding: 48px 0 56px;
            }
            .article-container {
                padding: 0 20px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 600px) {
            .container {
                padding: 0 16px;
            }
            .article-cover-wrap {
                height: 220px;
            }
            .article-body {
                padding: 24px 20px 20px;
            }
            .article-tags,
            .article-footer-bar {
                padding-left: 20px;
                padding-right: 20px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
            .faq-item {
                padding: 18px;
            }
            .breadcrumb {
                font-size: 12px;
            }
            .article-hero-meta {
                gap: 10px;
                font-size: 13px;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .article-footer-bar {
                flex-direction: column;
                justify-content: center;
                align-items: center;
            }
            .share-box {
                justify-content: center;
            }
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --primary: #1b2a4a;
            --primary-light: #2c3e6b;
            --primary-dark: #0f1b33;
            --accent: #f0a542;
            --accent-dark: #d98e2b;
            --accent-soft: rgba(240, 165, 66, 0.14);
            --bg: #f4f6fb;
            --card-bg: #ffffff;
            --text: #1f2937;
            --muted: #6b7280;
            --border: #e7e9f0;
            --radius: 20px;
            --radius-sm: 12px;
            --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
            --shadow-hover: 0 14px 40px rgba(15, 23, 42, 0.13);
            --transition: all 0.3s ease;
            --sidebar-width: 260px;
        }

        /* ========== 基础 Reset ========== */
        *,
        *::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: 1.65;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

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

        /* ========== 布局容器 ========== */
        .app-shell {
            display: flex;
            min-height: 100vh;
        }

        .main-content {
            flex: 1;
            margin-left: var(--sidebar-width);
            min-width: 0;
            display: flex;
            flex-direction: column;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        /* ========== 侧边栏导航 ========== */
        .sidebar {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--sidebar-width);
            height: 100vh;
            background: linear-gradient(180deg, var(--primary-dark) 0%, var(--primary) 120%);
            display: flex;
            flex-direction: column;
            padding: 28px 20px;
            z-index: 200;
            border-right: 1px solid rgba(255, 255, 255, 0.06);
        }

        .sidebar-logo {
            font-size: 22px;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: 0.5px;
            padding: 10px 14px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-logo i {
            color: var(--accent);
            font-size: 20px;
        }

        .sidebar-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-top: 26px;
        }

        .nav-link {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 18px;
            border-radius: 14px;
            color: rgba(255, 255, 255, 0.72);
            font-size: 15px;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
        }

        .nav-link i {
            width: 22px;
            text-align: center;
            font-size: 17px;
        }

        .nav-link:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #ffffff;
            transform: translateX(3px);
        }

        .nav-link.active {
            background: var(--accent);
            color: var(--primary-dark);
            font-weight: 700;
            box-shadow: 0 8px 24px rgba(240, 165, 66, 0.38);
        }

        .nav-link.active i {
            color: var(--primary-dark);
        }

        .sidebar-card {
            margin-top: auto;
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 18px;
            padding: 20px;
        }

        .sidebar-card-icon {
            width: 40px;
            height: 40px;
            background: var(--accent);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary-dark);
            font-size: 18px;
            margin-bottom: 12px;
        }

        .sidebar-card h4 {
            color: #fff;
            font-size: 15px;
            margin-bottom: 6px;
            font-weight: 700;
        }

        .sidebar-card p {
            color: rgba(255, 255, 255, 0.62);
            font-size: 13px;
            line-height: 1.55;
        }

        /* ========== 移动端头部 ========== */
        .mobile-header {
            display: none;
            background: var(--primary-dark);
            padding: 16px 20px;
            align-items: center;
            justify-content: space-between;
            position: sticky;
            top: 0;
            z-index: 150;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
        }

        .mobile-logo {
            color: #fff;
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 0.5px;
        }

        .menu-toggle {
            color: #fff;
            font-size: 20px;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.2);
        }

        .sidebar-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 190;
            backdrop-filter: blur(2px);
        }

        /* ========== 分类 Hero ========== */
        .cat-hero {
            position: relative;
            padding: 120px 0 100px;
            color: #fff;
            overflow: hidden;
        }

        .cat-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            z-index: 0;
        }

        .cat-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg,
                    rgba(11, 19, 36, 0.95) 0%,
                    rgba(11, 19, 36, 0.72) 50%,
                    rgba(11, 19, 36, 0.38) 100%);
            z-index: 1;
        }

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

        .cat-hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(240, 165, 66, 0.16);
            border: 1px solid rgba(240, 165, 66, 0.45);
            color: var(--accent);
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 26px;
        }

        .cat-hero h1 {
            font-size: 54px;
            line-height: 1.12;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 22px;
            max-width: 700px;
        }

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

        .cat-hero-desc {
            font-size: 18px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            margin-bottom: 44px;
        }

        .cat-hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
        }

        .hero-stat {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 16px;
            padding: 18px 26px;
            backdrop-filter: blur(8px);
            min-width: 150px;
        }

        .hero-stat strong {
            font-size: 30px;
            font-weight: 800;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }

        .hero-stat span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            margin-top: 4px;
            display: block;
        }

        /* ========== 通用板块 ========== */
        .section {
            padding: 88px 0;
        }

        .section-alt {
            background: #fff;
        }

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

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--accent-soft);
            color: var(--accent-dark);
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 38px;
            line-height: 1.2;
            font-weight: 800;
            color: var(--text);
            letter-spacing: -0.3px;
            margin-bottom: 14px;
        }

        .section-head p {
            color: var(--muted);
            font-size: 17px;
            max-width: 680px;
            line-height: 1.7;
        }

        /* ========== 分类简介 ========== */
        .intro-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }

        .intro-content .section-label {
            margin-bottom: 16px;
        }

        .intro-content h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            color: var(--text);
        }

        .intro-content p {
            color: var(--muted);
            line-height: 1.85;
            font-size: 16px;
            margin-bottom: 18px;
        }

        .intro-points {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
        }

        .intro-point {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: var(--shadow);
        }

        .intro-point i {
            color: var(--accent);
        }

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

        .intro-image img {
            width: 100%;
            height: 420px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .intro-image-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 30px;
            background: linear-gradient(to top, rgba(11, 19, 36, 0.85), transparent);
            color: #fff;
        }

        .intro-image-overlay strong {
            display: block;
            font-size: 18px;
            margin-bottom: 4px;
        }

        .intro-image-overlay span {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }

        /* ========== 评分维度 ========== */
        .dimen-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

        .dimen-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);
        }

        .dimen-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            border-color: rgba(240, 165, 66, 0.4);
        }

        .dimen-card:hover::before {
            opacity: 1;
        }

        .dimen-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            background: var(--accent-soft);
            color: var(--accent-dark);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 22px;
        }

        .dimen-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .dimen-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .dimen-weight {
            display: inline-block;
            margin-top: 16px;
            background: var(--accent-soft);
            color: var(--accent-dark);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 999px;
        }

        /* ========== 最新评测文章 ========== */
        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

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

        .review-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-6px);
            border-color: rgba(240, 165, 66, 0.35);
        }

        .review-cover {
            position: relative;
            height: 220px;
            overflow: hidden;
        }

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

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

        .review-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(11, 19, 36, 0.82);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 6px 14px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

        .review-rating {
            position: absolute;
            bottom: 14px;
            right: 14px;
            background: var(--primary-dark);
            color: var(--accent);
            padding: 6px 14px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 800;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
        }

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

        .review-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 12px;
            color: var(--text);
        }

        .review-body p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.65;
            flex: 1;
        }

        .review-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            margin-top: 18px;
            padding-top: 16px;
            color: var(--muted);
            font-size: 13px;
        }

        .review-meta i {
            color: var(--accent);
            margin-right: 6px;
        }

        /* ========== 评测流程 ========== */
        .process-section {
            background: var(--primary-dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .process-section::before {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            border-radius: 50%;
            background: rgba(240, 165, 66, 0.12);
            filter: blur(90px);
            top: -120px;
            right: -120px;
        }

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

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

        .process-section .section-label {
            background: rgba(240, 165, 66, 0.16);
            border: 1px solid rgba(240, 165, 66, 0.35);
            color: var(--accent);
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            position: relative;
            z-index: 1;
        }

        .process-step {
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 20px;
            padding: 28px 22px;
            transition: var(--transition);
            position: relative;
        }

        .process-step:hover {
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-4px);
        }

        .step-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
            margin-bottom: 14px;
            opacity: 0.9;
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow 0.3s ease;
        }

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

        .faq-item summary {
            list-style: none;
            cursor: pointer;
            padding: 22px 28px;
            font-weight: 600;
            font-size: 16px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 18px;
            color: var(--text);
            transition: var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: '\f078';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent);
            transition: transform 0.3s ease;
            font-size: 14px;
            flex-shrink: 0;
        }

        .faq-item details[open] summary::after {
            transform: rotate(180deg);
        }

        .faq-answer {
            padding: 0 28px 24px;
            color: var(--muted);
            line-height: 1.75;
            font-size: 15px;
            border-top: 1px dashed var(--border);
            margin-top: 0;
            padding-top: 18px;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(240, 165, 66, 0.16);
            filter: blur(80px);
            bottom: -160px;
            right: -60px;
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            color: #fff;
        }

        .cta-inner h2 {
            font-size: 38px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
        }

        .cta-inner p {
            color: rgba(255, 255, 255, 0.82);
            font-size: 17px;
            line-height: 1.75;
            margin-bottom: 34px;
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.3px;
            transition: var(--transition);
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--accent);
            color: var(--primary-dark);
            box-shadow: 0 8px 28px rgba(240, 165, 66, 0.35);
        }

        .btn-primary:hover {
            background: #ffb65a;
            transform: translateY(-2px);
            box-shadow: 0 12px 36px rgba(240, 165, 66, 0.45);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, 0.45);
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            transform: translateY(-2px);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--primary-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 64px 0 30px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.5px;
        }

        .footer-logo i {
            color: var(--accent);
            margin-right: 8px;
        }

        .footer-brand p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            line-height: 1.7;
            margin-top: 14px;
            max-width: 360px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            transition: var(--transition);
        }

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

        .footer-contact p {
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-contact p span {
            color: rgba(255, 255, 255, 0.3);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
            padding-top: 26px;
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }

        .footer-tech {
            color: rgba(255, 255, 255, 0.3);
        }

        /* ========== 焦点可访问性 ========== */
        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
            border-radius: 6px;
        }

        /* ========== 响应式断点 ========== */
        @media (max-width: 1200px) {
            .reviews-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .process-grid {
                grid-template-columns: repeat(3, 1fr);
            }

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

        @media (max-width: 1024px) {
            .container {
                padding: 0 28px;
            }

            .intro-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .intro-image img {
                height: 320px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --sidebar-width: 280px;
            }

            .sidebar {
                transform: translateX(-100%);
                transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
                box-shadow: 4px 0 40px rgba(0, 0, 0, 0.3);
            }

            .sidebar.open {
                transform: translateX(0);
            }

            .sidebar-overlay.show {
                display: block;
            }

            .mobile-header {
                display: flex;
            }

            .main-content {
                margin-left: 0;
            }

            .cat-hero {
                padding: 80px 0 70px;
            }

            .cat-hero h1 {
                font-size: 38px;
            }

            .cat-hero-desc {
                font-size: 16px;
            }

            .cat-hero-stats {
                gap: 12px;
            }

            .hero-stat {
                min-width: 130px;
                padding: 14px 18px;
            }

            .hero-stat strong {
                font-size: 24px;
            }

            .section {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 30px;
            }

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

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

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

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

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

        @media (max-width: 520px) {
            .container {
                padding: 0 20px;
            }

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

            .cat-hero-stats {
                flex-direction: column;
                width: 100%;
            }

            .hero-stat {
                width: 100%;
            }

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

            .cta-inner h2 {
                font-size: 28px;
            }

            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }

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