/* roulang page: index */
:root{
  --primary:#C9A227;--primary-dark:#8F6F18;--primary-light:#E5C558;
  --bg-dark:#14130F;--bg-dark-2:#1D1B17;--text-on-dark:#F6F3ED;--text-muted-dark:#B0AAA0;
  --bg-light:#F6F3ED;--bg-light-2:#EFEAE1;--text-on-light:#1F1E1C;--text-muted-light:#6B675F;
  --border:#E4DFD6;--positive:#2B6F66;--warning:#B6472E;
  --radius-sm:8px;--radius-md:16px;--radius-lg:24px;
  --shadow-card:0 1px 2px rgba(0,0,0,.05),0 10px 30px rgba(0,0,0,.07);
  --shadow-hover:0 4px 8px rgba(0,0,0,.06),0 18px 40px rgba(0,0,0,.12);
  --container:1200px;--gap:24px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);font-size:16px;line-height:1.75;color:var(--text-on-light);background:var(--bg-light);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .2s}
button{font-family:var(--font);border:none;cursor:pointer}
input{font-family:var(--font)}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section-head{margin-bottom:48px}
.section-head h2{font-size:32px;font-weight:700;line-height:1.3;color:var(--text-on-light);margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text-muted-light);max-width:560px;line-height:1.7}
.section-sub{font-size:18px;color:var(--text-muted-light);margin-top:8px}
.badge{display:inline-block;padding:4px 14px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(201,162,39,.12);color:var(--primary-dark);border:1px solid rgba(201,162,39,.3)}
.badge-warning{background:rgba(182,71,46,.1);color:var(--warning);border-color:rgba(182,71,46,.25)}
.badge-positive{background:rgba(43,111,102,.1);color:var(--positive);border-color:rgba(43,111,102,.25)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:12px;font-size:16px;font-weight:600;line-height:1.2;letter-spacing:.02em;transition:all .25s ease;min-height:48px;gap:8px}
.btn-primary{background:var(--primary);color:var(--text-on-light);box-shadow:0 2px 12px rgba(201,162,39,.3)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 6px 20px rgba(201,162,39,.4)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(201,162,39,.25)}
.btn-outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary-dark)}
.btn-outline:hover{background:rgba(201,162,39,.1);border-color:var(--primary-dark);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn-outline-light{background:transparent;border:1.5px solid rgba(246,243,237,.5);color:var(--text-on-dark)}
.btn-outline-light:hover{background:rgba(246,243,237,.08);border-color:rgba(246,243,237,.8);transform:translateY(-2px)}
.btn:focus-visible{outline:3px solid var(--primary);outline-offset:2px}
.btn-block{width:100%}

/* 头部导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:200;background:rgba(20,19,15,.82);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:all .3s ease;border-bottom:1px solid rgba(255,255,255,.06)}
.site-header.scrolled{box-shadow:0 4px 30px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:74px;transition:height .3s}
.site-header.scrolled .header-inner{height:62px}
.brand{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--text-on-dark)}
.brand-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:var(--text-on-light);box-shadow:0 2px 10px rgba(201,162,39,.35)}
.site-nav{display:flex;align-items:center;gap:4px}
.site-nav a{padding:10px 18px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text-muted-dark);transition:all .22s}
.site-nav a:hover{color:var(--text-on-dark);background:rgba(255,255,255,.05)}
.site-nav a.active{color:var(--primary-light);background:rgba(201,162,39,.1);font-weight:600}
.site-nav .nav-cta{margin-left:14px;padding:10px 24px;border-radius:12px;background:var(--primary);color:var(--text-on-light);font-weight:700}
.site-nav .nav-cta:hover{filter:brightness(1.1);transform:translateY(-2px)}
.nav-toggle{display:none;width:44px;height:44px;background:transparent;border-radius:8px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text-on-dark);border-radius:2px;transition:all .3s}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:linear-gradient(135deg,rgba(20,19,15,.95) 20%,rgba(20,19,15,.75) 60%,rgba(20,19,15,.5)),url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;padding:140px 0 100px;overflow:hidden}
.hero::after{content:'';position:absolute;bottom:0;left:0;right:0;height:120px;background:linear-gradient(transparent,var(--bg-light));pointer-events:none}
.hero .container{position:relative;z-index:2;display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero-content .hero-tag{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;border-radius:999px;background:rgba(201,162,39,.12);border:1px solid rgba(201,162,39,.25);color:var(--primary-light);font-size:14px;font-weight:600;margin-bottom:24px}
.hero-content h1{font-size:44px;line-height:1.25;font-weight:800;color:var(--text-on-dark);margin-bottom:20px;letter-spacing:.01em}
.hero-content h1 em{font-style:normal;color:var(--primary-light)}
.hero-content .lead{font-size:17px;line-height:1.8;color:var(--text-muted-dark);margin-bottom:32px;max-width:520px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:40px}
.hero-stats{display:flex;gap:40px;flex-wrap:wrap;padding-top:28px;border-top:1px solid rgba(255,255,255,.1)}
.hero-stats .stat-item .stat-num{font-size:26px;font-weight:800;color:var(--text-on-dark);font-variant-numeric:tabular-nums}
.hero-stats .stat-item .stat-label{font-size:14px;color:var(--text-muted-dark);margin-top:2px}
.hero-card{background:rgba(29,27,23,.85);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.5);max-width:430px;margin-left:auto}
.hero-card-cover{position:relative;height:180px;overflow:hidden}
.hero-card-cover img{width:100%;height:100%;object-fit:cover}
.hero-card-cover::after{content:'';position:absolute;inset:0;background:linear-gradient(transparent,rgba(20,19,15,.7))}
.hero-card-cover .badge{position:absolute;top:16px;right:16px;z-index:2}
.hero-card-body{padding:28px}
.hero-card-body h3{font-size:20px;font-weight:700;color:var(--text-on-dark);margin-bottom:6px}
.hero-card-body .card-desc{font-size:14px;color:var(--text-muted-dark);margin-bottom:16px}
.hero-card-toc{border-top:1px solid rgba(255,255,255,.08);padding-top:14px;margin-bottom:20px}
.hero-card-toc li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted-dark);padding:7px 0}
.hero-card-toc li::before{content:'';width:4px;height:4px;border-radius:50%;background:var(--primary)}
.download-form{display:flex;gap:10px}
.download-form input{flex:1;min-width:0;height:48px;padding:0 16px;border-radius:12px;border:1px solid rgba(255,255,255,.15);background:rgba(255,255,255,.06);color:var(--text-on-dark);font-size:15px;outline:none;transition:border-color .25s}
.download-form input::placeholder{color:rgba(246,243,237,.4)}
.download-form input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(201,162,39,.2)}
.download-form .btn{padding:0 20px;min-height:48px}
.scroll-hint{position:absolute;bottom:32px;left:50%;transform:translateX(-50%);z-index:3;color:var(--primary);opacity:.8;animation:bounce 2s infinite;font-size:20px;width:44px;height:44px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(201,162,39,.08)}
@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(8px)}}

/* 卖点三连 */
.features{padding:96px 0;background:var(--bg-light)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.feature-card{position:relative;padding:40px 32px;background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-card);transition:all .3s ease;overflow:hidden}
.feature-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--primary-light));opacity:0;transition:opacity .3s}
.feature-card:hover{border-color:rgba(201,162,39,.4);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.feature-card:hover::before{opacity:1}
.feature-num{font-size:52px;font-weight:800;line-height:1;color:rgba(201,162,39,.2);font-variant-numeric:tabular-nums;margin-bottom:18px;transition:color .3s}
.feature-card:hover .feature-num{color:rgba(201,162,39,.45)}
.feature-card h3{font-size:22px;font-weight:700;color:var(--text-on-light);margin-bottom:14px}
.feature-card p{font-size:15px;line-height:1.75;color:var(--text-muted-light)}
.feature-feats{margin-top:14px;display:flex;flex-direction:column;gap:6px}
.feature-feats li{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-muted-light)}
.feature-feats li::before{content:'✓';color:var(--primary);font-weight:700;font-size:12px}

/* 场景演示 */
.scenarios{background:var(--bg-light-2);padding:96px 0}
.scenario-block{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding-bottom:72px;margin-bottom:72px;border-bottom:1px solid rgba(0,0,0,.06)}
.scenario-block:last-child{padding-bottom:0;margin-bottom:0;border-bottom:none}
.scenario-media{overflow:hidden;border-radius:var(--radius-md);box-shadow:var(--shadow-card);position:relative;aspect-ratio:16/10;background:rgba(201,162,39,.06)}
.scenario-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.scenario-block:hover .scenario-media img{transform:scale(1.03)}
.scenario-media .badge{position:absolute;top:16px;left:16px;z-index:2;background:rgba(20,19,15,.7);color:var(--text-on-dark);border-color:rgba(255,255,255,.15);backdrop-filter:blur(6px)}
.scenario-content .scenario-label{font-size:14px;font-weight:700;color:var(--primary-dark);letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px}
.scenario-content h3{font-size:28px;font-weight:700;color:var(--text-on-light);line-height:1.35;margin-bottom:16px}
.scenario-content p{font-size:16px;line-height:1.8;color:var(--text-muted-light);margin-bottom:20px}
.scenario-content ul{display:flex;flex-direction:column;gap:8px;margin-bottom:24px}
.scenario-content ul li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--text-muted-light)}
.scenario-content ul li::before{content:'—';color:var(--primary);font-weight:700}
.text-link{display:inline-flex;align-items:center;gap:6px;color:var(--primary-dark);font-weight:600;font-size:15px;border-bottom:2px solid rgba(201,162,39,.3);padding-bottom:2px;transition:all .25s}
.text-link:hover{color:var(--primary);border-color:var(--primary);gap:10px}
.scenario-block-dark{background:var(--bg-dark);padding:72px 40px;border-radius:var(--radius-lg);margin-bottom:24px;border-bottom:none}
.scenario-block-dark .scenario-content h3{color:var(--text-on-dark)}
.scenario-block-dark .scenario-content p{color:var(--text-muted-dark)}
.scenario-block-dark .scenario-content ul li{color:var(--text-muted-dark)}
.scenario-block-dark .scenario-content .scenario-label{color:var(--primary-light)}
.scenario-block-dark .text-link{color:var(--primary-light);border-color:rgba(201,162,39,.4)}

/* 社会认同 */
.social-proof{padding:96px 0;background:var(--bg-dark);color:var(--text-on-dark)}
.social-proof .section-head h2{color:var(--text-on-dark)}
.social-proof .section-head p{color:var(--text-muted-dark)}
.stats-band{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;padding:40px 0;margin-bottom:56px;border-top:1px solid rgba(255,255,255,.08);border-bottom:1px solid rgba(255,255,255,.08)}
.stats-band .stat{text-align:center;position:relative}
.stats-band .stat:not(:last-child)::after{content:'';position:absolute;right:-16px;top:50%;transform:translateY(-50%);width:1px;height:60px;background:rgba(255,255,255,.08)}
.stats-band .stat-num{font-size:42px;font-weight:800;color:var(--primary-light);font-variant-numeric:tabular-nums;line-height:1.2}
.stats-band .stat-label{font-size:14px;color:var(--text-muted-dark);margin-top:6px;letter-spacing:.05em}
.testimonials{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testimonial-card{background:var(--bg-dark-2);border:1px solid rgba(255,255,255,.07);border-radius:var(--radius-md);padding:28px;transition:all .3s ease}
.testimonial-card:hover{border-color:rgba(201,162,39,.3);box-shadow:0 8px 30px rgba(0,0,0,.4);transform:translateY(-4px)}
.testimonial-stars{display:flex;gap:3px;color:var(--primary);font-size:15px;margin-bottom:16px}
.testimonial-text{font-size:15px;line-height:1.75;color:var(--text-muted-dark);margin-bottom:20px}
.testimonial-author{display:flex;align-items:center;gap:12px}
.testimonial-author img{width:44px;height:44px;border-radius:50%;object-fit:cover;border:2px solid rgba(201,162,39,.4);background:rgba(201,162,39,.1)}
.testimonial-author .author-name{font-size:15px;font-weight:600;color:var(--text-on-dark)}
.testimonial-author .author-desc{font-size:13px;color:var(--text-muted-dark)}

/* 资讯 */
.news-section{padding:96px 0;background:var(--bg-light)}
.news-grid{display:grid;grid-template-columns:1fr 340px;gap:60px}
.news-list{display:flex;flex-direction:column}
.news-item{display:flex;flex-direction:column;gap:4px;padding:24px 0;border-bottom:1px solid var(--border);transition:all .3s ease;padding-left:16px;border-radius:8px}
.news-item:hover{background:var(--bg-light-2);padding-left:24px;border-color:rgba(201,162,39,.3)}
.news-item h3{font-size:18px;font-weight:600;color:var(--text-on-light);line-height:1.5;margin-bottom:4px}
.news-item h3 a:hover{color:var(--primary-dark)}
.news-item p{font-size:14px;color:var(--text-muted-light);line-height:1.7;margin-bottom:6px}
.news-item .meta{font-size:13px;color:var(--text-muted-light);display:flex;align-items:center;gap:12px}
.news-item .meta .tag{color:var(--primary-dark);font-weight:600}
.news-side{display:flex;flex-direction:column;gap:32px}
.news-side .side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);padding:28px;box-shadow:var(--shadow-card)}
.news-side .side-card h3{font-size:18px;font-weight:700;color:var(--text-on-light);margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--border)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-cloud a{display:inline-block;padding:6px 14px;border-radius:999px;background:var(--bg-light-2);color:var(--text-muted-light);font-size:13px;font-weight:500;border:1px solid transparent;transition:all .25s}
.tag-cloud a:hover{background:rgba(201,162,39,.1);color:var(--primary-dark);border-color:rgba(201,162,39,.3)}
.side-list{display:flex;flex-direction:column;gap:4px}
.side-list li{padding:10px 0;border-bottom:1px solid var(--border);font-size:14px;color:var(--text-muted-light);transition:all .25s;display:flex;align-items:center;gap:8px}
.side-list li:last-child{border-bottom:none}
.side-list li:hover{color:var(--primary-dark);padding-left:8px}
.side-list li::before{content:'›';color:var(--primary);font-weight:700;font-size:16px}

/* FAQ */
.faq-section{background:var(--bg-light-2);padding:96px 0}
.faq-wrap{max-width:820px;margin:0 auto;display:flex;flex-direction:column;gap:16px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-md);overflow:hidden;transition:box-shadow .3s, border-color .3s}
.faq-item:hover{border-color:rgba(201,162,39,.3)}
.faq-item[open]{box-shadow:var(--shadow-card);border-color:rgba(201,162,39,.4)}
.faq-item summary{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:22px 28px;font-size:17px;font-weight:600;color:var(--text-on-light);cursor:pointer;list-style:none;user-select:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:'+';font-size:24px;font-weight:400;color:var(--primary);transition:transform .3s;flex-shrink:0}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item summary:hover{color:var(--primary-dark)}
.faq-answer{padding:0 28px 24px;font-size:15px;line-height:1.8;color:var(--text-muted-light)}

/* CTA */
.cta-section{background:var(--bg-dark);padding:96px 0;position:relative;overflow:hidden}
.cta-section::before{content:'';position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(ellipse at center, rgba(201,162,39,.12) 0%, transparent 60%)}
.cta-section .container{position:relative;text-align:center;max-width:680px}
.cta-section h2{font-size:34px;font-weight:800;color:var(--text-on-dark);line-height:1.4;margin-bottom:16px}
.cta-section p{font-size:16px;color:var(--text-muted-dark);margin-bottom:36px;line-height:1.7}
.cta-section .btn{margin:0 auto}

/* 页脚 */
.site-footer{background:var(--bg-dark-2);color:var(--text-muted-dark);padding:72px 0 0}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px;border-bottom:1px solid rgba(255,255,255,.06)}
.footer-brand .brand{font-size:24px;margin-bottom:14px}
.footer-brand p{font-size:14px;line-height:1.7;max-width:280px}
.footer-col h4{font-size:16px;font-weight:700;color:var(--text-on-dark);margin-bottom:20px;letter-spacing:.03em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul a{font-size:14px;color:var(--text-muted-dark);transition:all .25s}
.footer-col ul a:hover{color:var(--primary-light);padding-left:6px}
.footer-subscribe p{font-size:14px;line-height:1.6;margin-bottom:18px}
.footer-subscribe .subscribe-form{display:flex;gap:8px}
.footer-subscribe input{flex:1;min-width:0;height:44px;padding:0 14px;border-radius:10px;border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.05);color:var(--text-on-dark);font-size:14px;outline:none}
.footer-subscribe input:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(201,162,39,.15)}
.footer-subscribe .btn{padding:0 18px;min-height:44px;font-size:14px;border-radius:10px}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;padding:24px 0;font-size:13px;color:rgba(246,243,237,.35);flex-wrap:wrap;gap:8px}
.footer-bottom a{color:rgba(246,243,237,.35)} .footer-bottom a:hover{color:var(--primary-light)}
.footer-bottom .legal-links{display:flex;gap:24px}

/* 底部固定转化条 */
.bottom-bar{position:fixed;bottom:0;left:0;right:0;z-index:100;background:rgba(20,19,15,.95);backdrop-filter:blur(12px);border-top:1px solid rgba(201,162,39,.2);padding:14px 24px;transform:translateY(100%);transition:transform .4s ease;box-shadow:0 -4px 30px rgba(0,0,0,.5)}
.bottom-bar.visible{transform:translateY(0)}
.bottom-bar .container{display:flex;align-items:center;justify-content:space-between;gap:16px}
.bottom-bar .bar-text{font-size:15px;font-weight:600;color:var(--text-on-dark);display:flex;align-items:center;gap:10px}
.bottom-bar .bar-text::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--primary);box-shadow:0 0 8px rgba(201,162,39,.6)}
.bottom-bar .btn{padding:10px 24px;min-height:44px;font-size:15px}
body{padding-bottom:0}
body.has-bottom-bar{padding-bottom:72px}

/* 响应式 */
@media (max-width:1024px){
  .hero .container{grid-template-columns:1fr;gap:40px}
  .hero-card{max-width:100%;margin:0}
  .features-grid{grid-template-columns:1fr 1fr}
  .scenario-block{grid-template-columns:1fr;gap:32px}
  .testimonials{grid-template-columns:1fr 1fr}
  .news-grid{grid-template-columns:1fr}
  .stats-band{grid-template-columns:repeat(2,1fr);gap:24px}
  .stats-band .stat:nth-child(2)::after{display:none}
  .footer-top{grid-template-columns:1fr 1fr}
  .hero-content h1{font-size:36px}
}
@media (max-width:768px){
  .site-nav{display:none;position:fixed;top:74px;left:0;right:0;bottom:0;background:rgba(20,19,15,.98);flex-direction:column;align-items:stretch;padding:24px;gap:8px;overflow-y:auto}
  .site-nav.open{display:flex}
  .site-nav a{font-size:20px;padding:16px 20px;text-align:center;border-radius:12px}
  .site-nav a.active{background:rgba(201,162,39,.1)}
  .site-nav .nav-cta{margin:16px 0 0}
  .nav-toggle{display:flex}
  .hero{padding:120px 0 80px}
  .hero-content h1{font-size:32px}
  .hero-actions{flex-direction:column}
  .hero-actions .btn{width:100%}
  .features-grid{grid-template-columns:1fr}
  .testimonials{grid-template-columns:1fr}
  .stats-band{grid-template-columns:2fr}
  .stats-band .stat::after{display:none}
  .cta-section h2{font-size:28px}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .section-head h2{font-size:26px}
  .feature-num{font-size:40px}
  .scenario-block-dark{padding:40px 24px}
}
@media (max-width:520px){
  .container{padding:0 16px}
  .hero-content h1{font-size:28px}
  .hero-content .lead{font-size:15px}
  .bottom-bar{padding:10px 16px}
  .bottom-bar .bar-text{font-size:13px}
  .bottom-bar .btn{padding:8px 16px;font-size:14px;min-height:40px}
  .download-form{flex-direction:column}
  .footer-bottom{flex-direction:column;text-align:center}
  .stats-band{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
}
@media (max-width:640px){
  .hero-stats{gap:16px}
  .hero-stats .stat-item .stat-num{font-size:22px}
  .hero-card-toc li{font-size:13px}
  .testimonial-card{padding:20px}
  .news-item{padding:18px 12px}
}
@media (max-width:1280px) and (min-width:1025px){
  .container{max-width:1120px}
}
@media (max-width:1536px) and (min-width:1281px){
  .container{max-width:1200px}
}

/* roulang page: category1 */
:root{
  --primary:#C9A227;--primary-dark:#8F6F18;--primary-light:#E5C558;
  --bg-dark:#14130F;--bg-dark-2:#1D1B17;--text-on-dark:#F6F3ED;--text-muted-dark:#B0AAA0;
  --bg-light:#F6F3ED;--bg-light-2:#EFEAE1;--text-on-light:#1F1E1C;--text-muted-light:#6B675F;
  --border:#E4DFD6;--positive:#2B6F66;--warning:#B6472E;
  --radius-sm:8px;--radius-md:16px;--radius-lg:24px;
  --shadow-card:0 1px 2px rgba(0,0,0,.05),0 10px 30px rgba(0,0,0,.07);
  --shadow-hover:0 4px 8px rgba(0,0,0,.06),0 18px 40px rgba(0,0,0,.12);
  --container:1200px;--gap:24px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font);font-size:16px;line-height:1.75;color:var(--text-on-light);background:var(--bg-light);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;object-fit:cover}
a{color:inherit;text-decoration:none;transition:color .2s}
button{font-family:var(--font);border:none;cursor:pointer}
input{font-family:var(--font)}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section-head{margin-bottom:48px}
.section-head h2{font-size:32px;font-weight:700;line-height:1.3;color:var(--text-on-light);margin-bottom:12px}
.section-head p{font-size:16px;color:var(--text-muted-light);max-width:600px;line-height:1.7}
.section-head .section-sub{font-size:18px;color:var(--text-muted-light);margin-top:8px}
.badge{display:inline-block;padding:4px 14px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(201,162,39,.12);color:var(--primary-dark);border:1px solid rgba(201,162,39,.3)}
.badge-warning{background:rgba(182,71,46,.1);color:var(--warning);border-color:rgba(182,71,46,.25)}
.badge-positive{background:rgba(43,111,102,.1);color:var(--positive);border-color:rgba(43,111,102,.25)}

/* 按钮 */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 32px;border-radius:12px;font-size:16px;font-weight:600;line-height:1.2;letter-spacing:.02em;transition:all .25s ease;min-height:48px;gap:8px}
.btn-primary{background:var(--primary);color:var(--text-on-light);box-shadow:0 2px 12px rgba(201,162,39,.3)}
.btn-primary:hover{filter:brightness(1.08);transform:translateY(-2px);box-shadow:0 6px 20px rgba(201,162,39,.4)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(201,162,39,.25)}
.btn-outline{background:transparent;border:1.5px solid var(--primary);color:var(--primary-dark)}
.btn-outline:hover{background:rgba(201,162,39,.1);border-color:var(--primary-dark);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(0)}
.btn:focus-visible{outline:3px solid var(--primary);outline-offset:2px}
.btn[disabled]{opacity:.5;box-shadow:none;transform:none;cursor:not-allowed}

/* 头部导航 */
.site-header{position:fixed;top:0;left:0;right:0;z-index:200;background:rgba(20,19,15,.82);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);transition:all .3s ease;border-bottom:1px solid rgba(255,255,255,.06)}
.site-header.scrolled{box-shadow:0 4px 30px rgba(0,0,0,.4)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:74px;transition:height .3s}
.site-header.scrolled .header-inner{height:62px}
.brand{display:flex;align-items:center;gap:10px;font-size:22px;font-weight:800;color:var(--text-on-dark)}
.brand-mark{width:38px;height:38px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;color:var(--text-on-light);box-shadow:0 2px 10px rgba(201,162,39,.35)}
.site-nav{display:flex;align-items:center;gap:4px}
.site-nav a{padding:10px 18px;border-radius:8px;font-size:15px;font-weight:500;color:var(--text-muted-dark);transition:all .22s}
.site-nav a:hover{color:var(--text-on-dark);background:rgba(255,255,255,.05)}
.site-nav a.active{color:var(--primary-light);background:rgba(201,162,39,.1);font-weight:600}
.site-nav .nav-cta{margin-left:14px;padding:10px 24px;border-radius:12px;background:var(--primary);color:var(--text-on-light);font-weight:700}
.site-nav .nav-cta:hover{filter:brightness(1.1);transform:translateY(-2px);background:var(--primary)}
.nav-toggle{display:none;width:44px;height:44px;background:transparent;border-radius:8px;flex-direction:column;align-items:center;justify-content:center;gap:5px;transition:background .2s}
.nav-toggle:hover{background:rgba(255,255,255,.08)}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text-on-dark);border-radius:2px;transition:all .3s}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* 分类页头部 */
.page-hero{background:var(--bg-dark);padding:140px 0 72px;border-bottom:1px solid rgba(255,255,255,.08);position:relative;overflow:hidden}
.page-hero::before{content:'';position:absolute;top:-120px;right:-80px;width:420px;height:420px;background:radial-gradient(circle,rgba(201,162,39,.14),transparent 65%);pointer-events:none}
.page-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:4px;font-size:14px;color:var(--text-muted-dark);margin-bottom:24px}
.breadcrumb a{color:var(--text-muted-dark);transition:color .2s}
.breadcrumb a:hover{color:var(--primary-light)}
.breadcrumb-sep{color:rgba(255,255,255,.35);margin:0 6px}
.page-hero h1{font-size:40px;line-height:1.25;font-weight:800;color:var(--text-on-dark);margin-bottom:16px;letter-spacing:.01em}
.page-hero h1 .highlight{color:var(--primary-light)}
.page-hero .page-intro{font-size:16px;line-height:1.8;color:var(--text-muted-dark);max-width:680px}

/* 主内容区 */
.category-main{padding:56px 0 24px;background:var(--bg-light-2)}

/* 筛选栏 */
.filter-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:36px}
.filter-list{display:flex;gap:10px;flex-wrap:wrap}
.filter-count{font-size:14px;color:var(--text-muted-light);white-space:nowrap}
.filter-btn{display:inline-flex;align-items:center;min-height:44px;padding:0 22px;border-radius:999px;border:1.5px solid var(--border);background:var(--bg-light);color:var(--text-muted-light);font-size:14px;font-weight:600;transition:all .22s;white-space:nowrap}
.filter-btn:hover{border-color:var(--primary);color:var(--primary-dark);background:rgba(201,162,39,.06)}
.filter-btn.active{background:var(--primary);border-color:var(--primary);color:var(--text-on-light);box-shadow:0 2px 10px rgba(201,162,39,.25)}
.filter-btn:focus-visible{outline:3px solid var(--primary);outline-offset:2px}

/* 卡片网格 */
.video-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.video-card{background:#FDFCF9;border:1px solid rgba(0,0,0,.04);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card);transition:all .3s ease}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(201,162,39,.35)}
.video-card.hidden{display:none}
.card-media{display:block;aspect-ratio:16/9;overflow:hidden;position:relative;background:rgba(201,162,39,.12)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.video-card:hover .card-media img{transform:scale(1.03)}
.card-badge{position:absolute;top:12px;left:12px;padding:4px 14px;border-radius:999px;background:rgba(20,19,15,.68);backdrop-filter:blur(6px);color:var(--primary-light);font-size:12px;font-weight:700;letter-spacing:.04em;border:1px solid rgba(255,255,255,.12)}
.card-body{padding:20px}
.card-meta{display:flex;justify-content:space-between;align-items:center;gap:8px;font-size:13px;color:var(--text-muted-light);margin-bottom:8px}
.card-meta .meta-tag{color:var(--primary-dark);font-weight:600}
.card-title{font-size:18px;font-weight:700;line-height:1.4;margin-bottom:10px;color:var(--text-on-light)}
.card-title a{transition:color .2s}
.card-title a:hover{color:var(--primary-dark)}
.card-desc{font-size:14px;line-height:1.7;color:var(--text-muted-light);margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-link{font-size:14px;font-weight:600;color:var(--primary-dark);display:inline-flex;align-items:center;gap:4px;transition:gap .2s}
.card-link:hover{gap:8px}
.load-more-wrap{text-align:center;padding:40px 0 48px}

/* 卖点区 */
.value-row{background:var(--bg-light);padding:96px 0}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
.value-item{position:relative;padding-top:20px}
.value-item::before{content:'';position:absolute;top:0;left:0;width:52px;height:3px;background:var(--primary);border-radius:2px}
.value-num{display:block;font-size:14px;font-weight:700;color:var(--primary-dark);letter-spacing:.1em;margin-bottom:14px;font-variant-numeric:tabular-nums}
.value-item h3{font-size:19px;font-weight:700;color:var(--text-on-light);margin-bottom:10px}
.value-item p{font-size:15px;line-height:1.8;color:var(--text-muted-light)}

/* 适用场景 */
.scenario-section{background:var(--bg-dark);padding:96px 0}
.scenario-section .section-head h2{color:var(--text-on-dark)}
.scenario-section .section-head p{color:var(--text-muted-dark)}
.scenario-list{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.scenario-item{background:var(--bg-dark-2);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-md);padding:32px 28px;transition:all .3s ease}
.scenario-item:hover{border-color:rgba(201,162,39,.4);transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.scenario-num{font-size:13px;font-weight:700;color:var(--primary-light);letter-spacing:.1em}
.scenario-item h3{font-size:19px;line-height:1.4;font-weight:700;color:var(--text-on-dark);margin:14px 0 10px}
.scenario-item p{font-size:15px;line-height:1.75;color:var(--text-muted-dark)}

/* 流程步骤 */
.steps-section{background:var(--bg-light-2);padding:96px 0}
.steps-list{display:grid;grid-template-columns:repeat(3,1fr);gap:48px}
.step-index{width:44px;height:44px;border-radius:50%;background:rgba(201,162,39,.12);border:1px solid rgba(201,162,39,.3);color:var(--primary-dark);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:17px;margin-bottom:18px;font-variant-numeric:tabular-nums}
.steps-list h3{font-size:18px;font-weight:700;color:var(--text-on-light);margin-bottom:8px}
.steps-list p{font-size:15px;line-height:1.75;color:var(--text-muted-light)}

/* FAQ */
.faq-section{background:var(--bg-light);padding:96px 0}
.faq-list{max-width:820px;margin:0 auto}
.faq-list details{border:1px solid var(--border);border-radius:var(--radius-md);background:#FDFCF9;overflow:hidden;transition:box-shadow .3s,border-color .3s;margin-bottom:14px}
.faq-list details[open]{box-shadow:var(--shadow-card);border-color:rgba(201,162,39,.45)}
.faq-list summary{padding:20px 24px;font-size:16px;font-weight:600;color:var(--text-on-light);cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;transition:color .2s;min-height:48px;list-style:none}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'+';font-size:24px;font-weight:400;color:var(--primary-dark);transition:transform .25s;line-height:1}
.faq-list details[open] summary{color:var(--primary-dark)}
.faq-list details[open] summary::after{transform:rotate(45deg)}
.faq-list details p{padding:0 24px 22px;color:var(--text-muted-light);font-size:15px;line-height:1.85}
.faq-list details p:last-of-type{margin-bottom:0}

/* 尾部CTA带 */
.cta-band{background:var(--bg-dark);padding:72px 0;border-top:1px solid rgba(255,255,255,.06);position:relative;overflow:hidden}
.cta-band::before{content:'';position:absolute;bottom:-80px;left:-60px;width:380px;height:380px;background:radial-gradient(circle,rgba(201,162,39,.12),transparent 65%);pointer-events:none}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;position:relative;z-index:2}
.cta-text h2{color:var(--text-on-dark);font-size:26px;font-weight:700;line-height:1.4;margin-bottom:6px}
.cta-text p{color:var(--text-muted-dark);font-size:15px}
.cta-band .btn-primary{min-width:160px}

/* 页脚 */
.site-footer{background:var(--bg-dark);color:var(--text-muted-dark);padding:72px 0 0;border-top:1px solid rgba(255,255,255,.06)}
.footer-top{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:48px;padding-bottom:56px}
.footer-brand .brand{margin-bottom:18px}
.footer-brand p{font-size:15px;line-height:1.75;color:var(--text-muted-dark);max-width:300px}
.footer-col h4{font-size:16px;font-weight:700;color:var(--text-on-dark);margin-bottom:18px}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:15px;color:var(--text-muted-dark);transition:color .2s}
.footer-col ul a:hover{color:var(--primary-light)}
.footer-col p{font-size:14px;line-height:1.75;color:var(--text-muted-dark)}
.subscribe-form{display:flex;gap:10px;margin-top:16px}
.subscribe-form input{flex:1;height:48px;padding:0 16px;border-radius:12px;border:1.5px solid rgba(255,255,255,.12);background:rgba(255,255,255,.05);color:var(--text-on-dark);font-size:14px;transition:border-color .2s,box-shadow .2s}
.subscribe-form input::placeholder{color:rgba(176,170,160,.6)}
.subscribe-form input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(201,162,39,.2)}
.subscribe-form .btn-primary{padding:0 20px;min-height:48px;white-space:nowrap}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:24px 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:14px;color:var(--text-muted-dark)}
.legal-links{display:flex;gap:24px}
.legal-links a{transition:color .2s}
.legal-links a:hover{color:var(--primary-light)}

/* 响应式 */
@media (max-width: 1024px){
  .video-grid{grid-template-columns:repeat(3,1fr);gap:20px}
  .value-grid{grid-template-columns:repeat(3,1fr);gap:32px}
  .scenario-list{grid-template-columns:repeat(3,1fr);gap:20px}
  .steps-list{grid-template-columns:repeat(3,1fr);gap:32px}
  .footer-top{grid-template-columns:1.5fr 1fr 1fr;gap:40px}
  .footer-top .footer-col:last-child{grid-column:span 2}
}
@media (max-width: 900px){
  .nav-toggle{display:flex}
  .site-nav{
    position:fixed;top:74px;left:16px;right:16px;background:var(--bg-dark-2);
    border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-md);
    padding:12px;flex-direction:column;align-items:stretch;gap:4px;
    opacity:0;transform:translateY(-8px);transition:all .25s ease;
    pointer-events:none;box-shadow:0 24px 48px rgba(0,0,0,.45);
  }
  .site-nav.open{opacity:1;transform:translateY(0);pointer-events:auto}
  .site-nav a{display:block;padding:14px 18px;border-radius:12px;font-size:16px;color:var(--text-muted-dark);border-bottom:1px solid rgba(255,255,255,.04)}
  .site-nav a:hover{background:rgba(255,255,255,.06);color:var(--text-on-dark)}
  .site-nav a.active{color:var(--primary-light);background:rgba(201,162,39,.1)}
  .site-nav .nav-cta{margin:8px 0 0;text-align:center;background:var(--primary);color:var(--text-on-light)}
  .site-nav .nav-cta:hover{background:var(--primary);filter:brightness(1.1)}
}
@media (max-width: 768px){
  .page-hero{padding:120px 0 56px}
  .page-hero h1{font-size:32px}
  .section-head h2{font-size:28px}
  .video-grid{grid-template-columns:repeat(2,1fr);gap:16px}
  .value-grid{grid-template-columns:1fr;gap:36px}
  .scenario-list{grid-template-columns:1fr;gap:16px}
  .steps-list{grid-template-columns:1fr;gap:28px}
  .filter-bar{flex-direction:column;align-items:flex-start;gap:16px}
  .filter-list{width:100%;flex-wrap:nowrap;overflow-x:auto;padding-bottom:8px;scrollbar-width:thin}
  .filter-list::-webkit-scrollbar{height:5px}
  .filter-list::-webkit-scrollbar-thumb{background:rgba(0,0,0,.14);border-radius:3px}
  .filter-btn{flex-shrink:0}
  .filter-count{font-size:13px}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px}
  .cta-text h2{font-size:22px}
  .cta-band .btn-primary{width:100%}
  .footer-top{grid-template-columns:1fr;gap:32px}
  .footer-top .footer-col:last-child{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .legal-links{gap:16px}
}
@media (max-width: 520px){
  .video-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:28px}
  .section-head h2{font-size:24px}
  .btn{padding:14px 24px}
  .container{padding:0 16px}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .video-card,.scenario-item,.btn,.card-media img{transition:none}
  .video-card:hover,.scenario-item:hover,.btn:hover{transform:none}
}