/* roulang page: index */
:root {
    --primary: #2F6FED;
    --primary-light: #3B82F6;
    --primary-bg: #EEF3FA;
    --accent: #FF7A59;
    --success: #10B981;
    --bg: #F7F9FC;
    --card-bg: #FFFFFF;
    --text-main: #1A2433;
    --text-secondary: #4B5A6B;
    --text-weak: #8B98A9;
    --border: #E4EAF2;
    --radius-card: 16px;
    --radius-btn: 12px;
    --radius-search: 14px;
    --radius-round: 999px;
    --shadow-card: 0 4px 16px rgba(30,50,80,0.06);
    --shadow-hover: 0 12px 32px rgba(30,50,80,0.12);
    --shadow-nav: 0 2px 12px rgba(30,50,80,0.08);
    --font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
    --container: 1240px;
    --gap-section: 80px;
    --gap-section-sm: 48px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);font-size:16px;line-height:1.7;background:var(--bg);color:var(--text-main);-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;outline:none}
a:hover{color:var(--primary-light)}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(47,111,237,0.15)}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section-pad{padding:var(--gap-section) 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 28px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;line-height:1;transition:all .25s ease;border:1px solid transparent;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-light);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(47,111,237,0.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(47,111,237,0.2)}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-bg);color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 18px rgba(47,111,237,0.12)}
.btn-outline:active{transform:translateY(0)}
.btn-block{width:100%}
.badge{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--radius-round);font-size:13px;font-weight:600;background:var(--accent);color:#fff;letter-spacing:.3px}
.badge-green{background:var(--success)}
.badge-blue{background:var(--primary-bg);color:var(--primary)}

.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow .3s ease}
.site-header.scrolled{box-shadow:var(--shadow-nav)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{font-size:26px;font-weight:800;color:var(--text-main);letter-spacing:-.5px;flex-shrink:0;display:flex;align-items:center;gap:8px}
.logo em{font-style:normal;color:var(--primary)}
.logo .logo-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);display:inline-block}
.search-box{flex:1;max-width:560px;margin:0 auto;display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-search);height:46px;padding:0 16px;transition:all .25s ease}
.search-box:hover{border-color:var(--primary-light)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,111,237,0.12);background:#fff}
.search-box svg{width:18px;height:18px;stroke:var(--text-weak);margin-right:10px;flex-shrink:0}
.search-box input{border:none;background:none;outline:none;flex:1;font-size:15px;color:var(--text-main);height:100%}
.search-box input::placeholder{color:var(--text-weak)}
.search-box input::-webkit-search-cancel-button{-webkit-appearance:none}
.main-nav{display:flex;align-items:center;flex-shrink:0}
.main-nav ul{display:flex;align-items:center;gap:4px}
.main-nav a{display:inline-block;padding:8px 16px;font-size:15px;font-weight:500;color:var(--text-secondary);border-radius:var(--radius-btn);transition:all .2s ease;position:relative}
.main-nav a:hover{color:var(--primary);background:var(--primary-bg)}
.main-nav a.active{color:var(--primary);font-weight:600;background:var(--primary-bg)}
.main-nav a.active::after{content:'';position:absolute;bottom:2px;left:16px;right:16px;height:3px;background:var(--primary);border-radius:3px}
.nav-toggle{display:none;width:46px;height:46px;border-radius:var(--radius-btn);align-items:center;justify-content:center;background:var(--bg);border:1px solid var(--border);flex-shrink:0}
.nav-toggle:hover{background:var(--primary-bg);border-color:var(--primary-light)}
.nav-toggle svg{width:22px;height:22px;stroke:var(--text-main)}
.search-toggle{display:none;width:46px;height:46px;border-radius:var(--radius-btn);align-items:center;justify-content:center;background:var(--bg);border:1px solid var(--border);flex-shrink:0}
.search-toggle:hover{background:var(--primary-bg);border-color:var(--primary-light)}
.search-toggle svg{width:20px;height:20px;stroke:var(--text-main)}
.mobile-search-layer{display:none;padding:12px 0;background:#fff;border-bottom:1px solid var(--border)}
.mobile-search-layer.open{display:block}
.mobile-search-layer .search-box{max-width:none;margin:0}

.hero{position:relative;background:linear-gradient(135deg,rgba(247,249,252,0.97) 0%,rgba(238,243,250,0.92) 50%,rgba(255,255,255,0.95) 100%),url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;padding:72px 0 64px;overflow:hidden}
.hero::after{content:'';position:absolute;bottom:-60px;right:-60px;width:320px;height:320px;background:radial-gradient(circle,rgba(47,111,237,0.08) 0%,transparent 70%);border-radius:50%;pointer-events:none}
.hero-inner{display:grid;grid-template-columns:1.1fr 0.9fr;gap:56px;align-items:center;position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,122,89,0.12);color:#d9573a;font-size:14px;font-weight:600;padding:6px 16px;border-radius:var(--radius-round);margin-bottom:20px}
.hero-badge svg{width:16px;height:16px;stroke:#d9573a}
.hero h1{font-size:52px;font-weight:800;line-height:1.2;color:var(--text-main);letter-spacing:-1px;margin-bottom:20px}
.hero h1 em{font-style:normal;color:var(--primary)}
.hero-subtitle{font-size:17px;color:var(--text-secondary);line-height:1.8;margin-bottom:28px;max-width:480px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:28px}
.hero-points{display:flex;flex-wrap:wrap;gap:20px}
.hero-points li{display:flex;align-items:center;gap:6px;font-size:14px;color:var(--text-secondary)}
.hero-points li svg{width:16px;height:16px;stroke:var(--success);flex-shrink:0}
.progress-card{background:var(--card-bg);border-radius:20px;padding:32px;box-shadow:var(--shadow-card);border:1px solid var(--border);transition:box-shadow .3s ease}
.progress-card:hover{box-shadow:var(--shadow-hover)}
.progress-card-title{font-size:16px;font-weight:700;color:var(--text-main);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.progress-card-title svg{width:20px;height:20px;stroke:var(--primary)}
.progress-ring-wrap{display:flex;justify-content:center;align-items:center;margin:24px 0 16px;position:relative}
.progress-ring{width:150px;height:150px;transform:rotate(-90deg)}
.progress-ring circle{fill:none}
.progress-ring .track{stroke:var(--border);stroke-width:8}
.progress-ring .bar{stroke:var(--primary);stroke-width:8;stroke-linecap:round;transition:stroke-dashoffset 1s ease}
.progress-ring-text{position:absolute;text-align:center}
.progress-ring-text .value{display:block;font-size:38px;font-weight:800;color:var(--text-main);line-height:1.1}
.progress-ring-text .label{display:block;font-size:13px;color:var(--text-weak);margin-top:2px}
.progress-detail{text-align:center;font-size:14px;color:var(--text-secondary);margin-bottom:24px}
.tier-list{display:flex;flex-direction:column;gap:10px;margin-bottom:24px}
.tier-item{display:flex;justify-content:space-between;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:10px 14px;font-size:14px;transition:all .2s ease}
.tier-item:hover{border-color:var(--primary-light);background:var(--primary-bg)}
.tier-item .tier-name{font-weight:600;color:var(--text-main)}
.tier-item .tier-count{color:var(--text-secondary);font-size:13px}
.tier-item .tier-count b{color:var(--primary);font-weight:700}

.showcase{padding:var(--gap-section) 0}
.section-head{text-align:center;max-width:640px;margin:0 auto 48px}
.section-head h2{font-size:34px;font-weight:800;color:var(--text-main);line-height:1.25;letter-spacing:-.5px;margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text-secondary);line-height:1.7}
.showcase-banner{position:relative;border-radius:20px;overflow:hidden;margin-bottom:40px;background:linear-gradient(135deg,rgba(47,111,237,0.82),rgba(59,130,246,0.6)),url('/assets/images/backpic/back-2.jpg') center/cover;padding:48px 56px;min-height:180px;display:flex;align-items:center}
.showcase-banner .banner-content{z-index:1}
.showcase-banner h3{font-size:28px;font-weight:800;color:#fff;margin-bottom:8px}
.showcase-banner p{font-size:16px;color:rgba(255,255,255,0.9)}
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.category-card{display:block;background:var(--card-bg);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--border);transition:box-shadow .3s ease,transform .3s ease}
.category-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.category-card:hover .category-img img{transform:scale(1.03)}
.category-img{aspect-ratio:16/10;overflow:hidden;position:relative}
.category-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.category-img .free-badge{position:absolute;top:12px;left:12px}
.category-body{padding:20px 22px 24px}
.category-body h3{font-size:18px;font-weight:700;color:var(--text-main);margin-bottom:6px}
.category-body p{font-size:14px;color:var(--text-secondary);line-height:1.6;margin-bottom:14px}
.card-link{font-size:14px;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:4px;transition:gap .2s ease}
.card-link:hover{gap:8px}

.stats{background:var(--primary-bg);padding:56px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.stat-item{text-align:center;padding:16px}
.stat-num{display:block;font-size:42px;font-weight:800;color:var(--primary);line-height:1.2;letter-spacing:-1px;font-feature-settings:"tnum"}
.stat-label{display:block;font-size:15px;color:var(--text-secondary);margin-top:6px}

.steps{padding:var(--gap-section) 0}
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}
.step-card{background:var(--card-bg);border-radius:var(--radius-card);padding:36px 32px;box-shadow:var(--shadow-card);border:1px solid var(--border);position:relative;transition:box-shadow .3s ease,transform .3s ease}
.step-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.step-num{font-size:40px;font-weight:800;color:var(--primary-bg);line-height:1;display:block;margin-bottom:16px}
.step-card h3{font-size:20px;font-weight:700;color:var(--text-main);margin-bottom:10px}
.step-card p{font-size:15px;color:var(--text-secondary);line-height:1.7}

.testimonials{padding:var(--gap-section) 0;background:var(--bg)}
.testimonial-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testimonial-card{background:var(--card-bg);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);border:1px solid var(--border);display:flex;flex-direction:column;gap:16px;transition:box-shadow .3s ease}
.testimonial-card:hover{box-shadow:var(--shadow-hover)}
.testimonial-stars{font-size:16px;letter-spacing:2px;color:#FFB800}
.testimonial-card p{font-size:14px;color:var(--text-secondary);line-height:1.75;flex:1}
.testimonial-user{display:flex;align-items:center;gap:12px;border-top:1px solid var(--border);padding-top:16px}
.avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;color:#fff;flex-shrink:0}
.avatar-1{background:var(--primary)}
.avatar-2{background:var(--accent)}
.avatar-3{background:var(--success)}
.user-name{display:block;font-size:14px;font-weight:600;color:var(--text-main)}
.user-role{font-size:12px;color:var(--text-weak)}

.news-section{padding:var(--gap-section) 0}
.news-layout{display:grid;grid-template-columns:1fr 340px;gap:48px}
.news-list{display:flex;flex-direction:column}
.news-list h3,.hot-sidebar h3{font-size:20px;font-weight:700;color:var(--text-main);margin-bottom:20px;padding-bottom:12px;border-bottom:2px solid var(--primary-bg)}
.news-item{display:flex;align-items:baseline;gap:16px;padding:14px 0;border-bottom:1px solid var(--border);transition:background .2s ease;border-radius:8px;padding-left:8px}
.news-item:hover{background:var(--primary-bg);padding-left:14px}
.news-date{font-size:13px;color:var(--text-weak);white-space:nowrap;font-feature-settings:"tnum"}
.news-title{font-size:15px;color:var(--text-main);font-weight:500;line-height:1.5}
.news-item:hover .news-title{color:var(--primary)}
.hot-sidebar{background:var(--card-bg);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-card);border:1px solid var(--border)}
.hot-item{display:flex;align-items:center;gap:14px;padding:14px 0;border-bottom:1px solid var(--border);transition:background .2s ease}
.hot-item:last-child{border-bottom:none}
.hot-item:hover{background:var(--primary-bg)}
.hot-tag{font-size:20px;flex-shrink:0}
.hot-item strong{display:block;font-size:14px;font-weight:600;color:var(--text-main);line-height:1.4}
.hot-item small{font-size:12px;color:var(--text-weak)}

.cta-section{padding:var(--gap-section) 0;background:linear-gradient(135deg,var(--primary-bg) 0%,#f0f4fb 100%)}
.cta-card{background:var(--card-bg);border-radius:24px;padding:56px 48px;text-align:center;box-shadow:var(--shadow-card);border:1px solid var(--border);max-width:820px;margin:0 auto}
.cta-card h2{font-size:30px;font-weight:800;color:var(--text-main);margin-bottom:12px}
.cta-card>p{font-size:16px;color:var(--text-secondary);line-height:1.7;margin-bottom:32px}
.subscribe-form{display:flex;gap:12px;max-width:520px;margin:0 auto 20px}
.subscribe-form input{flex:1;height:46px;border:1px solid var(--border);border-radius:var(--radius-btn);padding:0 16px;font-size:15px;transition:all .25s ease;background:var(--bg)}
.subscribe-form input::placeholder{color:var(--text-weak)}
.subscribe-form input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,111,237,0.12);background:#fff}
.subscribe-form input.error{border-color:#E5484D;box-shadow:0 0 0 4px rgba(229,72,77,0.12)}
.cta-card .btn-outline{margin-top:8px}

.faq-section{padding:var(--gap-section) 0}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:0}
.faq-item{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-card);margin-bottom:12px;overflow:hidden;transition:box-shadow .3s ease}
.faq-item:hover{box-shadow:var(--shadow-card)}
.faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text-main);text-align:left;background:none;border:none;transition:background .2s ease}
.faq-question:hover{background:var(--primary-bg)}
.faq-icon{width:20px;height:20px;flex-shrink:0;transition:transform .3s ease;stroke:var(--primary)}
.faq-item.open .faq-icon{transform:rotate(45deg)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease;background:var(--bg)}
.faq-answer p{padding:0 24px 20px;font-size:15px;color:var(--text-secondary);line-height:1.75}

.site-footer{background:#fff;border-top:1px solid var(--border);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:48px;padding-bottom:48px}
.footer-brand .logo{font-size:24px;margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-secondary);line-height:1.7;max-width:280px}
.footer-col h4{font-size:16px;font-weight:700;color:var(--text-main);margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:var(--text-secondary);transition:color .2s ease}
.footer-col a:hover{color:var(--primary)}
.footer-contact p{font-size:14px;color:var(--text-secondary);margin-bottom:8px}
.footer-bottom{border-top:1px solid var(--border);padding:20px 0;text-align:center;font-size:14px;color:var(--text-weak)}

.mobile-nav{position:fixed;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:16px 24px;display:none;z-index:99;box-shadow:var(--shadow-nav)}
.mobile-nav.open{display:block}
.mobile-nav ul{display:flex;flex-direction:column}
.mobile-nav a{display:block;padding:14px 0;font-size:16px;color:var(--text-main);border-bottom:1px solid var(--border)}
.mobile-nav a.active{color:var(--primary);font-weight:600}

@media (max-width:1024px){
    .hero-inner{grid-template-columns:1fr;gap:40px}
    .hero-subtitle{max-width:100%}
    .category-grid{grid-template-columns:repeat(2,1fr)}
    .steps-grid{grid-template-columns:repeat(3,1fr)}
    .testimonial-grid{grid-template-columns:repeat(2,1fr)}
    .news-layout{grid-template-columns:1fr}
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .main-nav{display:none}
    .nav-toggle{display:flex}
    .search-box{display:none}
    .search-toggle{display:flex}
    .header-inner{justify-content:space-between}
}
@media (max-width:768px){
    :root{--gap-section:56px}
    .hero{padding:48px 0}
    .hero h1{font-size:38px}
    .hero-subtitle{font-size:16px}
    .category-grid{grid-template-columns:1fr}
    .steps-grid{grid-template-columns:1fr}
    .testimonial-grid{grid-template-columns:1fr}
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .stat-num{font-size:32px}
    .cta-card{padding:40px 24px}
    .subscribe-form{flex-direction:column}
    .subscribe-form input{height:50px}
    .subscribe-form .btn{height:50px}
    .footer-grid{grid-template-columns:1fr}
    .showcase-banner{padding:32px 24px}
    .showcase-banner h3{font-size:22px}
    .section-head h2{font-size:28px}
    .section-head p{font-size:14px}
    .hero-actions .btn{width:100%}
    .hero-points{flex-direction:column;gap:10px}
    .progress-ring{width:130px;height:130px}
}
@media (max-width:520px){
    .container{padding:0 16px}
    .header-inner{height:64px}
    .logo{font-size:22px}
    .hero h1{font-size:32px}
    .stats-grid{grid-template-columns:1fr}
    .news-item{flex-direction:column;gap:4px}
    .footer-grid{gap:32px}
    .btn{padding:0 20px;font-size:14px}
    .progress-card{padding:24px}
    .footer-bottom{font-size:13px}
}

/* roulang page: category1 */
:root {
  --primary: #2F6FED;
  --primary-light: #3B82F6;
  --primary-bg: #EEF3FA;
  --accent: #FF7A59;
  --success: #10B981;
  --bg: #F7F9FC;
  --card-bg: #FFFFFF;
  --text-main: #1A2433;
  --text-secondary: #4B5A6B;
  --text-weak: #8B98A9;
  --border: #E4EAF2;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-search: 14px;
  --radius-round: 999px;
  --shadow-card: 0 4px 16px rgba(30,50,80,0.06);
  --shadow-hover: 0 12px 32px rgba(30,50,80,0.12);
  --shadow-nav: 0 2px 12px rgba(30,50,80,0.08);
  --font-family: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --container: 1240px;
  --gap-section: 72px;
  --gap-section-sm: 48px;
}
html{scroll-behavior:smooth}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:var(--font-family);font-size:16px;line-height:1.7;background:var(--bg);color:var(--text-main);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;outline:none;transition:color .2s ease}
a:hover{color:var(--primary-light)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--primary);outline-offset:2px;box-shadow:0 0 0 4px rgba(47,111,237,0.15)}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section-pad{padding:var(--gap-section) 0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:46px;padding:0 28px;border-radius:var(--radius-btn);font-weight:600;font-size:15px;line-height:1;transition:all .25s ease;border:1px solid transparent;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-light);color:#fff;transform:translateY(-2px);box-shadow:0 8px 24px rgba(47,111,237,0.28)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(47,111,237,0.2)}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-bg);color:var(--primary);transform:translateY(-2px);box-shadow:0 6px 18px rgba(47,111,237,0.12)}
.btn-outline:active{transform:translateY(0)}
.badge{display:inline-flex;align-items:center;justify-content:center;height:26px;padding:0 12px;border-radius:var(--radius-round);font-size:13px;font-weight:600;background:var(--accent);color:#fff;letter-spacing:.3px;white-space:nowrap}
.badge-green{background:var(--success)}
.badge-blue{background:var(--primary-bg);color:var(--primary)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:box-shadow .3s ease}
.site-header.scrolled{box-shadow:var(--shadow-nav)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.logo{font-size:26px;font-weight:800;color:var(--text-main);letter-spacing:-.5px;flex-shrink:0;display:flex;align-items:center;gap:8px}
.logo em{font-style:normal;color:var(--primary)}
.logo .logo-dot{width:8px;height:8px;border-radius:50%;background:var(--primary);display:inline-block}
.search-box{flex:1;max-width:560px;margin:0 auto;display:flex;align-items:center;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-search);height:46px;padding:0 16px;transition:all .25s ease}
.search-box:hover{border-color:var(--primary-light)}
.search-box:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(47,111,237,0.12);background:#fff}
.search-box svg{width:18px;height:18px;stroke:var(--text-weak);margin-right:10px;flex-shrink:0}
.search-box input{border:none;background:none;outline:none;flex:1;font-size:15px;color:var(--text-main);height:100%}
.search-box input::placeholder{color:var(--text-weak)}
.main-nav{display:flex;align-items:center;flex-shrink:0}
.main-nav ul{display:flex;align-items:center;gap:4px;list-style:none}
.main-nav a{display:inline-block;padding:8px 16px;font-size:15px;font-weight:500;color:var(--text-secondary);border-radius:var(--radius-btn);transition:all .2s ease;position:relative}
.main-nav a:hover{color:var(--primary);background:var(--primary-bg)}
.main-nav a.active{color:var(--primary);font-weight:600;background:var(--primary-bg)}
.main-nav a.active::after{content:'';position:absolute;bottom:2px;left:16px;right:16px;height:3px;background:var(--primary);border-radius:3px}
.nav-toggle{display:none;width:46px;height:46px;border-radius:var(--radius-btn);align-items:center;justify-content:center;background:var(--bg);border:1px solid var(--border);flex-shrink:0}
.sortable-placeholder{display:none}
/* ===== 分类页页头 ===== */
.category-hero{position:relative;background:linear-gradient(120deg,rgba(247,249,252,0.98) 0%,rgba(238,243,250,0.94) 60%,rgba(255,255,255,0.9) 100%),url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;padding:56px 0 48px;border-bottom:1px solid var(--border);overflow:hidden}
.category-hero::after{content:'';position:absolute;top:-80px;right:-40px;width:280px;height:280px;background:radial-gradient(circle,rgba(47,111,237,0.07) 0%,transparent 70%);border-radius:50%;pointer-events:none}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-weak);margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:var(--text-weak);transition:color .2s}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-weak);opacity:.5}
.breadcrumb .current{color:var(--text-secondary);font-weight:500}
.category-hero-inner{display:grid;grid-template-columns:1fr auto;gap:40px;align-items:end;position:relative;z-index:1}
.category-hero h1{font-size:42px;font-weight:800;line-height:1.25;letter-spacing:-.5px;color:var(--text-main);margin-bottom:16px}
.category-hero h1 span{color:var(--primary)}
.category-hero .category-desc{font-size:16px;color:var(--text-secondary);line-height:1.8;max-width:720px;margin-bottom:20px}
.category-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:24px}
.category-meta .badge{height:30px;padding:0 16px;font-size:14px}
.update-schedule{display:flex;align-items:center;gap:20px;background:rgba(255,255,255,0.85);border:1px solid var(--border);border-radius:var(--radius-card);padding:14px 24px;box-shadow:var(--shadow-card);flex-wrap:wrap}
.update-schedule .slot{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--text-secondary)}
.update-schedule .slot .dot{width:8px;height:8px;border-radius:50%;background:var(--success);flex-shrink:0}
.update-schedule .slot strong{color:var(--text-main);font-weight:600}
.update-schedule .slot .time{background:var(--primary-bg);color:var(--primary);font-size:13px;font-weight:600;padding:2px 10px;border-radius:var(--radius-round)}
/* ===== 筛选工具条 ===== */
.filter-bar{position:sticky;top:72px;z-index:50;background:rgba(255,255,255,0.95);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--border);padding:16px 0}
.filter-bar-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.filter-group{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.filter-label{font-size:14px;color:var(--text-weak);margin-right:4px}
.filter-tag{display:inline-flex;align-items:center;justify-content:center;height:34px;padding:0 16px;border-radius:var(--radius-round);font-size:14px;font-weight:500;color:var(--text-secondary);background:var(--bg);border:1px solid var(--border);transition:all .2s ease;cursor:pointer}
.filter-tag:hover{border-color:var(--primary-light);color:var(--primary);background:var(--primary-bg)}
.filter-tag.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px rgba(47,111,237,0.2)}
.filter-tag:active{transform:scale(.96)}
.sort-group{display:flex;align-items:center;gap:8px}
.sort-btn{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 16px;border-radius:var(--radius-btn);font-size:14px;font-weight:500;color:var(--text-secondary);background:#fff;border:1px solid var(--border);transition:all .2s ease}
.sort-btn:hover{border-color:var(--primary-light);color:var(--primary)}
.sort-btn.active{background:var(--primary-bg);color:var(--primary);border-color:var(--primary-light);font-weight:600}
.sort-btn svg{width:15px;height:15px;stroke:currentColor}
/* ===== 内容列表 ===== */
.video-grid-section{padding:48px 0 64px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;flex-wrap:wrap}
.section-head h2{font-size:28px;font-weight:700;color:var(--text-main);line-height:1.3}
.section-head p{font-size:15px;color:var(--text-secondary);margin-top:6px}
.featured-card{display:grid;grid-template-columns:1.1fr 0.9fr;background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);margin-bottom:32px;transition:box-shadow .3s ease}
.featured-card:hover{box-shadow:var(--shadow-hover)}
.featured-card .featured-media{position:relative;overflow:hidden;min-height:280px}
.featured-card .featured-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.featured-card:hover .featured-media img{transform:scale(1.03)}
.featured-card .featured-overlay{position:absolute;top:16px;left:16px;display:flex;gap:8px}
.featured-card .featured-content{padding:36px 36px;display:flex;flex-direction:column;justify-content:center}
.featured-card .featured-content .tag-row{display:flex;align-items:center;gap:10px;margin-bottom:14px;flex-wrap:wrap}
.featured-card .featured-content h3{font-size:26px;font-weight:700;color:var(--text-main);line-height:1.4;margin-bottom:12px}
.featured-card .featured-content p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:20px}
.featured-card .featured-meta{display:flex;align-items:center;gap:16px;font-size:13px;color:var(--text-weak);margin-bottom:20px;flex-wrap:wrap}
.video-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.video-card{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);transition:all .3s ease;display:flex;flex-direction:column;position:relative}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.video-card .card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--primary-bg)}
.video-card .card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.video-card:hover .card-media img{transform:scale(1.05)}
.video-card .card-badges{position:absolute;top:12px;left:12px;display:flex;gap:6px;z-index:2}
.video-card .card-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1}
.video-card .card-body h3{font-size:17px;font-weight:600;color:var(--text-main);line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-body h3 a{color:var(--text-main);transition:color .2s}
.video-card .card-body h3 a:hover{color:var(--primary)}
.video-card .card-body .card-summary{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.video-card .card-footer{display:flex;align-items:center;justify-content:space-between;padding-top:14px;border-top:1px solid var(--border);margin-top:auto}
.video-card .card-footer .meta{font-size:13px;color:var(--text-weak)}
.video-card .card-footer .view-link{font-size:14px;font-weight:600;color:var(--primary)}
.video-card .card-footer .view-link:hover{color:var(--primary-light)}
/* ===== 分页器 ===== */
.pagination-wrap{padding:16px 0 8px}
.pagination{display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap}
.page-link{display:inline-flex;align-items:center;justify-content:center;min-width:42px;height:42px;padding:0 14px;border-radius:var(--radius-btn);font-size:15px;font-weight:500;color:var(--text-secondary);background:#fff;border:1px solid var(--border);transition:all .2s ease}
.page-link:hover{color:var(--primary);border-color:var(--primary-light);background:var(--primary-bg)}
.page-link.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px rgba(47,111,237,0.2)}
.page-link:active{transform:scale(.95)}
.page-link.disabled{opacity:.5;pointer-events:none;cursor:not-allowed}
/* ===== 内容方向说明 ===== */
.direction-section{background:var(--primary-bg);padding:56px 0}
.direction-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.direction-item{background:var(--card-bg);border-radius:var(--radius-card);padding:28px 24px;border:1px solid var(--border);transition:all .3s ease;position:relative}
.direction-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.direction-item .direction-icon{width:44px;height:44px;border-radius:12px;background:var(--primary-bg);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.direction-item .direction-icon svg{width:22px;height:22px;stroke:var(--primary)}
.direction-item h3{font-size:17px;font-weight:600;color:var(--text-main);margin-bottom:8px}
.direction-item p{font-size:14px;color:var(--text-secondary);line-height:1.7}
/* ===== FAQ ===== */
.faq-section{padding:64px 0}
.faq-grid{max-width:860px;margin:0 auto}
.faq-item{background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius-card);margin-bottom:14px;box-shadow:var(--shadow-card);transition:box-shadow .3s ease;overflow:hidden}
.faq-item:hover{box-shadow:var(--shadow-hover)}
.faq-item.open{border-color:var(--primary-light)}
.faq-question{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;padding:20px 24px;font-size:16px;font-weight:600;color:var(--text-main);text-align:left;transition:color .2s;line-height:1.5}
.faq-question:hover{color:var(--primary)}
.faq-question .faq-arrow{flex-shrink:0;width:20px;height:20px;border:2px solid var(--text-weak);border-left-color:transparent;border-bottom-color:transparent;transform:rotate(135deg);transition:transform .3s ease;border-radius:2px}
.faq-item.open .faq-arrow{transform:rotate(-45deg);border-color:var(--primary);border-left-color:transparent;border-bottom-color:transparent}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .35s ease}
.faq-item.open .faq-answer{max-height:300px}
.faq-answer p{padding:0 24px 22px;font-size:15px;color:var(--text-secondary);line-height:1.8}
/* ===== 底部CTA ===== */
.cta-strip{background:var(--card-bg);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:28px 0}
.cta-strip-inner{display:fled;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.cta-strip-text{font-size:18px;font-weight:600;color:var(--text-main)}
.cta-strip-text span{color:var(--primary)}
.cta-link{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--primary);padding:10px 0;transition:gap .2s ease}
.cta-link:hover{gap:14px;color:var(--primary-light)}
.cta-link svg{width:18px;height:18px;stroke:currentColor}
/* ===== 页脚 ===== */
.site-footer{background:#fff;border-top:1px solid var(--border);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 0.8fr 0.8fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:14px}
.footer-brand p{font-size:14px;color:var(--text-secondary);line-height:1.8;max-width:320px}
.footer-col h4{font-size:16px;font-weight:600;color:var(--text-main);margin-bottom:18px;position:relative;padding-bottom:10px}
.footer-col h4::after{content:'';position:absolute;left:0;bottom:0;width:24px;height:3px;background:var(--primary);border-radius:3px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-secondary);transition:all .2s}
.footer-col ul a:hover{color:var(--primary);padding-left:4px}
.footer-contact p{font-size:14px;color:var(--text-secondary);margin-bottom:8px;display:flex;align-items:center;gap:8px}
.footer-contact p svg{width:15px;height:15px;stroke:var(--text-weak);flex-shrink:0}
.footer-bottom{border-top:1px solid var(--border);padding:20px 0;text-align:center}
.footer-bottom p{font-size:14px;color:var(--text-weak)}
/* ===== 空状态与加载状态 ===== */
.empty-state,.loading-state{display:none;text-align:center;padding:80px 20px;background:var(--card-bg);border:1px dashed var(--border);border-radius:var(--radius-card);margin:24px 0}
.empty-state.show,.loading-state.show{display:block}
.empty-state .empty-icon{width:64px;height:64px;margin:0 auto 20px;border-radius:50%;background:var(--primary-bg);display:flex;align-items:center;justify-content:center}
.empty-state .empty-icon svg{width:30px;height:30px;stroke:var(--text-weak)}
.empty-state h3{font-size:18px;color:var(--text-main);margin-bottom:8px}
.empty-state p{font-size:14px;color:var(--text-secondary)}
.spinner{width:36px;height:36px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;margin:0 auto 16px;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
/* ===== 响应式 ===== */
@media (max-width:1024px){
  .direction-grid{grid-template-columns:repeat(2,1fr)}
  .video-grid{grid-template-columns:repeat(2,1fr)}
  .featured-card{grid-template-columns:1fr}
  .featured-card .featured-media{min-height:220px}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  .header-inner{height:64px;gap:12px}
  .search-box{display:none}
  .search-toggle{display:inline-flex}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .main-nav.open{display:flex;position:fixed;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:16px 24px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-nav);z-index:99}
  .main-nav.open ul{flex-direction:column;align-items:flex-start;width:100%;gap:4px}
  .main-nav.open a{display:block;width:100%;padding:12px 16px}
  .main-nav.open a.active::after{display:none}
  .category-hero{padding:40px 0 36px}
  .category-hero h1{font-size:32px}
  .category-hero-inner{grid-template-columns:1fr;gap:20px}
  .update-schedule{gap:12px;flex-direction:column;align-items:flex-start}
  .filter-bar{position:static}
  .filter-bar-inner{flex-direction:column;align-items:flex-start}
  .filter-group{overflow-x:auto;padding-bottom:6px;flex-wrap:nowrap;width:100%}
  .filter-tag{flex-shrink:0}
  .sort-group{width:100%}
  .sort-btn{flex:1;justify-content:center}
  .video-grid{grid-template-columns:1fr;gap:16px}
  .section-pad{padding:48px 0}
  .featured-card .featured-content{padding:24px 20px}
  .featured-card .featured-content h3{font-size:22px}
  .direction-grid{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:32px}
  .cta-strip-inner{flex-direction:column;align-items:flex-start}
  .faq-question{font-size:15px;padding:18px 18px}
  .faq-answer p{padding:0 18px 18px;font-size:14px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .category-hero h1{font-size:28px}
  .category-desc{font-size:15px}
  .video-card .card-body{padding:16px 16px 14px}
  .video-card .card-body h3{font-size:16px}
  .page-link{min-width:38px;height:38px;padding:0 10px;font-size:14px}
  .pagination .prev-text,.pagination .next-text{display:none}
  .hero-badge{font-size:13px}
  .section-head h2{font-size:22px}
}