/* roulang page: index */
:root{
  --primary:#C7853C;--primary-light:#DA9550;--primary-dark:#8A5A2B;
  --bg-dark:#0C0A08;--bg-dark-2:#14110E;--bg-dark-card:#1E1915;
  --bg-light:#F4EFE6;--bg-light-gray:#EDE6DB;--bg-card:#FFFBF5;
  --text-dark:#2B2118;--text-secondary:#6B5D52;
  --text-light:#F4EFE6;--text-light-2:#CBBBA8;
  --border-light:#E3D9CC;--border-dark:#3A2E26;
  --success:#4E8A62;--warning:#C96F4A;--info:#7A6A5C;
  --font-sans:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-serif:Georgia,"Times New Roman","Noto Serif SC",serif;
  --radius:18px;--radius-sm:10px;--radius-xs:8px;
  --shadow-card:0 2px 12px rgba(12,10,8,.06);
  --shadow-hover:0 12px 32px rgba(12,10,8,.14);
  --shadow-btn:0 6px 16px rgba(199,133,60,.3);
  --shadow-btn-lg:0 10px 28px rgba(199,133,60,.35);
  --container:1260px;
  --spacer:96px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);font-size:17px;line-height:1.75;color:var(--text-dark);background:var(--bg-light);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--spacer) 0}
.section-dark{background:var(--bg-dark);color:var(--text-light)}
.section-dark-2{background:var(--bg-dark-2);color:var(--text-light)}
.section-light{background:var(--bg-light)}
.section-gray{background:var(--bg-light-gray)}
.chapter-label{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.15em;text-transform:uppercase;color:var(--primary);margin-bottom:16px;border:1px solid rgba(199,133,60,.4);padding:4px 14px;border-radius:30px}
.section-title{font-size:36px;font-weight:700;line-height:1.3;margin-bottom:16px}
.section-desc{font-size:16px;line-height:1.7;color:var(--text-secondary);max-width:720px}
.section-dark .section-desc,.section-dark-2 .section-desc{color:var(--text-light-2)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:16px;font-weight:600;padding:14px 32px;border-radius:var(--radius-sm);transition:all .25s ease;outline:none}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.btn-primary{background:var(--primary);color:var(--text-dark);box-shadow:var(--shadow-btn)}
.btn-primary:hover{background:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow-btn-lg)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:transparent;border:1px solid var(--primary);color:var(--primary)}
.btn-secondary:hover{background:rgba(199,133,60,.1)}
.btn-secondary:active{transform:translateY(0)}
.btn-light{background:var(--text-light);color:var(--text-dark);box-shadow:0 4px 14px rgba(0,0,0,.2)}
.btn-light:hover{background:#fff;transform:translateY(-2px)}
.btn-light:active{transform:translateY(0)}
/* 公告条 */
.top-bar{background:var(--primary-dark);color:var(--text-light);height:36px;display:flex;align-items:center;font-size:13px;letter-spacing:.03em}
.top-bar .container{display:flex;justify-content:space-between;align-items:center}
.top-bar .badge-dot{display:inline-block;width:6px;height:6px;background:var(--success);border-radius:50%;margin-right:6px;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
/* 导航 */
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(12,10,8,.9);backdrop-filter:blur(12px);border-bottom:1px solid rgba(58,46,38,.4);transition:all .3s ease}
.header.scrolled{background:rgba(12,10,8,.96);box-shadow:0 4px 30px rgba(0,0,0,.4)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--text-light);letter-spacing:.02em}
.logo svg{width:28px;height:28px;color:var(--primary);flex-shrink:0}
.nav-links{display:flex;gap:32px;align-items:center}
.nav-links a{font-size:15px;font-weight:500;color:var(--text-light-2);transition:color .2s;position:relative;padding:4px 0}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--primary);border-radius:2px}
.nav-cta{display:flex;align-items:center;gap:14px}
.nav-status{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:var(--text-light);background:rgba(199,133,60,.15);border:1px solid rgba(199,133,60,.3);padding:4px 12px;border-radius:30px;white-space:nowrap}
.nav-status .dot{width:6px;height:6px;background:var(--success);border-radius:50%}
.btn-nav{padding:10px 22px;font-size:14px;border-radius:8px;background:var(--primary);color:var(--text-dark);font-weight:600;transition:all .25s}
.btn-nav:hover{background:var(--primary-light);transform:translateY(-1px);box-shadow:var(--shadow-btn)}
.btn-nav:active{transform:translateY(0)}
.btn-nav:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.menu-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;z-index:1100}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--text-light);transition:all .3s;border-radius:2px}
.mobile-menu{display:none;position:fixed;top:0;right:0;left:0;bottom:0;background:rgba(12,10,8,.98);z-index:1050;flex-direction:column;justify-content:center;align-items:center;gap:28px}
.mobile-menu.open{display:flex}
.mobile-menu a{font-size:24px;font-weight:700;color:var(--text-light);padding:10px 0;transition:color .2s}
.mobile-menu a:hover{color:var(--primary)}
.mobile-menu .btn{margin-top:12px}
/* Hero */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;justify-content:center;background:url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;color:var(--text-light);overflow:hidden}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(12,10,8,.95) 0%,rgba(12,10,8,.7) 45%,rgba(12,10,8,.35) 100%)}
.hero::after{content:'';position:absolute;inset:0;background:radial-gradient(ellipse at 70% 30%,rgba(199,133,60,.15) 0%,transparent 60%)}
.hero-inner{position:relative;z-index:2;padding-top:140px;padding-bottom:80px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary-light);background:rgba(199,133,60,.12);border:1px solid rgba(199,133,60,.3);padding:6px 18px;border-radius:30px;margin-bottom:24px}
.hero h1{font-size:56px;font-weight:800;line-height:1.18;margin-bottom:20px;max-width:640px;letter-spacing:-.01em}
.hero h1 span{color:var(--primary)}
.hero-sub{font-size:18px;line-height:1.7;color:var(--text-light-2);max-width:540px;margin-bottom:36px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:56px}
.hero-covers{display:flex;gap:20px;overflow-x:auto;padding-bottom:20px;scrollbar-width:none}
.hero-covers::-webkit-scrollbar{display:none}
.cover-card{flex:0 0 200px;height:280px;border-radius:16px;overflow:hidden;position:relative;background:#222;box-shadow:0 8px 30px rgba(0,0,0,.4);transition:transform .3s}
.cover-card:hover{transform:translateY(-6px)}
.cover-card img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.cover-card:hover img{transform:scale(1.05)}
.cover-card .cover-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 50%,rgba(12,10,8,.9) 100%)}
.cover-card .cover-status{position:absolute;top:10px;left:10px;background:rgba(12,10,8,.7);backdrop-filter:blur(6px);color:var(--text-light);font-size:11px;font-weight:600;padding:3px 10px;border-radius:20px;border:1px solid rgba(255,255,255,.15)}
.cover-card .cover-status.open{color:var(--success)}
.cover-card .cover-status.limit{color:var(--warning)}
.cover-card .cover-name{position:absolute;bottom:12px;left:14px;right:14px;font-size:15px;font-weight:600;color:#fff}
.cover-card .cover-tag{position:absolute;bottom:34px;left:14px;font-size:11px;color:rgba(255,255,255,.7)}
.hero-trust{position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.15);padding-top:24px;display:flex;gap:40px;flex-wrap:wrap}
.hero-trust span{font-size:14px;color:var(--text-light-2);display:inline-flex;align-items:center;gap:8px}
.hero-trust svg{width:16px;height:16px;color:var(--primary)}
/* 章节通用 */
.section-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:20px;margin-bottom:48px}
.section-head .head-text{max-width:680px}
/* 痛点区 */
.pain-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:48px}
.pain-card{background:var(--bg-dark-card);border:1px solid var(--border-dark);border-radius:var(--radius);padding:40px 28px;transition:border-color .3s,transform .3s}
.pain-card:hover{border-color:var(--primary);transform:translateY(-3px)}
.pain-num{font-family:var(--font-serif);font-size:52px;font-weight:700;color:var(--primary);line-height:1;margin-bottom:20px}
.pain-icon{width:44px;height:44px;margin-bottom:20px}
.pain-icon svg{width:44px;height:44px;stroke:var(--primary);fill:none;stroke-width:1.5}
.pain-card h3{font-size:20px;font-weight:600;margin-bottom:12px;color:var(--text-light)}
.pain-card p{font-size:15px;line-height:1.7;color:var(--text-light-2)}
/* 解决方案区 */
.filters{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:40px}
.filter-chip{font-size:14px;font-weight:500;padding:8px 20px;border-radius:30px;border:1px solid var(--border-light);background:transparent;color:var(--text-secondary);transition:all .2s;cursor:pointer}
.filter-chip:hover{border-color:var(--primary);color:var(--primary)}
.filter-chip.active{background:var(--primary);color:var(--text-dark);border-color:var(--primary);font-weight:600}
.library-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.library-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-card);transition:all .3s}
.library-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:var(--primary)}
.library-cover{position:relative;aspect-ratio:4/3;overflow:hidden}
.library-cover img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.library-card:hover .library-cover img{transform:scale(1.04)}
.library-cover .cover-overlay{position:absolute;inset:0;background:linear-gradient(180deg,transparent 40%,rgba(12,10,8,.85) 100%)}
.library-badge{position:absolute;top:14px;left:14px;font-size:12px;font-weight:600;padding:4px 14px;border-radius:30px;background:rgba(12,10,8,.7);backdrop-filter:blur(4px);color:#fff}
.library-badge.open{color:var(--success)}
.library-badge.limit{color:var(--warning)}
.library-badge.exclusive{color:var(--primary-light)}
.library-cover-title{position:absolute;bottom:14px;left:16px;right:16px;font-size:18px;font-weight:600;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.4)}
.library-body{padding:24px}
.library-body p{font-size:15px;color:var(--text-secondary);line-height:1.65;margin-bottom:16px}
.library-foot{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px}
.library-tags{display:flex;gap:8px;flex-wrap:wrap}
.library-tag{font-size:12px;background:var(--bg-light-gray);color:var(--text-secondary);padding:3px 12px;border-radius:20px;font-weight:500}
.library-link{font-size:14px;font-weight:600;color:var(--primary);transition:color .2s}
.library-link:hover{color:var(--primary-dark)}
/* 数据区 */
.data-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-bottom:60px}
.data-card{background:var(--bg-dark-card);border:1px solid var(--border-dark);border-radius:var(--radius);padding:36px 24px;text-align:center;transition:transform .3s}
.data-card:hover{transform:translateY(-4px)}
.data-num{font-family:var(--font-serif);font-size:56px;font-weight:800;color:var(--primary);line-height:1;margin-bottom:8px}
.data-label{font-size:14px;color:var(--text-light-2);font-weight:500}
.process-step{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.process-item{text-align:center;position:relative;padding:28px 16px}
.process-item::after{content:'';position:absolute;right:-14px;top:50%;width:28px;height:1px;background:var(--border-dark)}
.process-item:last-child::after{display:none}
.process-icon{width:48px;height:48px;margin:0 auto 16px;border-radius:50%;background:rgba(199,133,60,.12);display:flex;align-items:center;justify-content:center}
.process-icon svg{width:24px;height:24px;color:var(--primary)}
.process-item h4{font-size:18px;font-weight:600;color:var(--text-light);margin-bottom:6px}
.process-item p{font-size:13px;color:var(--text-light-2)}
/* 证言区 */
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.testi-card{background:var(--bg-card);border:1px solid var(--border-light);border-radius:var(--radius);padding:32px 28px;box-shadow:var(--shadow-card);transition:border-color .3s,box-shadow .3s}
.testi-card:hover{border-color:var(--primary);box-shadow:var(--shadow-hover)}
.testi-stars{display:flex;gap:4px;margin-bottom:16px}
.testi-stars svg{width:18px;height:18px;fill:var(--primary);color:var(--primary)}
.testi-text{font-size:16px;line-height:1.8;color:var(--text-dark);margin-bottom:24px}
.testi-person{display:flex;align-items:center;gap:14px}
.testi-avatar{width:44px;height:44px;border-radius:50%;background:var(--primary);display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;color:var(--text-dark)}
.testi-name{font-weight:600;font-size:15px}
.testi-role{font-size:13px;color:var(--text-secondary)}
/* 资讯区 */
.news-wrap{display:grid;grid-template-columns:1fr 360px;gap:48px}
.news-list{list-style:none;border-top:1px solid var(--border-light)}
.news-list li{border-bottom:1px solid var(--border-light);padding:20px 0}
.news-list li a{font-size:17px;font-weight:500;display:flex;justify-content:space-between;align-items:center;gap:16px;transition:color .2s}
.news-list li a:hover{color:var(--primary)}
.news-list .news-date{font-size:13px;color:var(--text-secondary);white-space:nowrap;flex-shrink:0}
.news-recommend{background:var(--bg-dark);border-radius:var(--radius);padding:32px 28px;color:var(--text-light)}
.news-recommend h3{font-size:18px;font-weight:700;margin-bottom:24px}
.rec-item{padding:14px 0;border-bottom:1px solid var(--border-dark)}
.rec-item:last-child{border-bottom:none}
.rec-item .rec-label{font-size:12px;color:var(--primary);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px}
.rec-item .rec-name{font-size:15px;font-weight:500;line-height:1.5}
/* FAQ */
.faq-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px}
.faq-left .section-title{margin-bottom:24px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{background:var(--bg-card);border:1px solid var(--border-light);border-radius:14px;overflow:hidden;transition:border-color .3s}
.faq-item.open{border-color:var(--primary)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font-size:16px;font-weight:600;text-align:left;background:none;border:none;cursor:pointer;transition:background .2s}
.faq-q:hover{background:rgba(199,133,60,.04)}
.faq-q:focus-visible{outline:2px solid var(--primary);outline-offset:-2px;border-radius:14px}
.faq-q .arrow{width:20px;height:20px;flex-shrink:0;transition:transform .3s;color:var(--primary)}
.faq-item.open .arrow{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 24px}
.faq-item.open .faq-a{max-height:400px;padding:0 24px 20px}
.faq-a p{font-size:15px;line-height:1.7;color:var(--text-secondary)}
/* CTA */
.cta-section{position:relative;padding:110px 0;background:url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;color:var(--text-light);text-align:center}
.cta-section::before{content:'';position:absolute;inset:0;background:rgba(12,10,8,.88)}
.cta-inner{position:relative;z-index:2;max-width:680px;margin:0 auto}
.cta-badge{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--text-light);background:rgba(199,133,60,.18);border:1px solid rgba(199,133,60,.35);padding:6px 20px;border-radius:30px;margin-bottom:20px}
.cta-badge .dot{width:6px;height:6px;background:var(--success);border-radius:50%;animation:pulse 2s infinite}
.cta-section h2{font-size:40px;font-weight:800;line-height:1.25;margin-bottom:20px}
.cta-section h2 span{color:var(--primary)}
.cta-section p{font-size:17px;color:var(--text-light-2);line-height:1.7;margin-bottom:36px}
.cta-actions{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.cta-note{margin-top:24px;font-size:14px;color:var(--text-light-2);display:inline-flex;align-items:center;gap:8px}
/* 页脚 */
.footer{background:var(--bg-dark);color:var(--text-light-2);padding:72px 0 0;border-top:1px solid var(--border-dark)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer .logo{margin-bottom:16px}
.footer-desc{font-size:14px;line-height:1.7;max-width:320px}
.footer h4{font-size:15px;font-weight:700;color:var(--text-light);margin-bottom:20px;letter-spacing:.03em}
.footer-links{list-style:none}
.footer-links li{margin-bottom:10px}
.footer-links a{font-size:14px;color:var(--text-light-2);transition:color .2s}
.footer-links a:hover{color:var(--primary)}
.footer-contact{font-size:14px;line-height:2;list-style:none}
.footer-contact svg{width:16px;height:16px;color:var(--primary);margin-right:8px;vertical-align:-3px}
.footer-bottom{border-top:1px solid var(--border-dark);padding:24px 0;text-align:center;font-size:13px;color:var(--text-light-2)}
.footer-social{display:flex;gap:12px;margin-top:16px}
.footer-social a{width:36px;height:36px;border:1px solid var(--border-dark);border-radius:10px;display:flex;align-items:center;justify-content:center;transition:all .2s}
.footer-social a:hover{background:rgba(199,133,60,.1);border-color:var(--primary)}
.footer-social svg{width:16px;height:16px;color:var(--text-light-2)}
/* 响应式 */
@media(max-width:1024px){
.section{padding:64px 0}
.section-title{font-size:30px}
.hero h1{font-size:44px}
.library-grid{grid-template-columns:1fr 1fr}
.data-grid{grid-template-columns:repeat(2,1fr);gap:16px}
.process-grid{grid-template-columns:repeat(2,1fr)}
.process-item::after{display:none}
.testi-grid{grid-template-columns:1fr;gap:20px}
.faq-wrap{grid-template-columns:1fr}
.news-wrap{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
.section{padding:48px 0}
.container{padding:0 16px}
.hero h1{font-size:34px;line-height:1.25}
.hero-sub{font-size:16px}
.nav-links,.nav-status{display:none}
.menu-toggle{display:flex}
.hero-actions{gap:12px;flex-direction:column;align-items:flex-start}
.hero-covers{width:100%}
.pain-cards{grid-template-columns:1fr;gap:16px}
.library-grid{grid-template-columns:1fr;gap:20px}
.data-grid{grid-template-columns:repeat(2,1fr)}
.process-grid{grid-template-columns:1fr;gap:12px}
.section-head{flex-direction:column;align-items:flex-start}
.footer-grid{grid-template-columns:1fr;gap:36px}
.cta-section h2{font-size:28px}
.cta-actions{flex-direction:column;align-items:stretch}
.cta-actions .btn{width:100%}
}
@media(max-width:520px){
body{font-size:16px}
.hero{padding-top:120px}
.hero h1{font-size:30px}
.hero-trust{gap:16px;flex-direction:column}
.data-grid{grid-template-columns:1fr;gap:12px}
.process-grid{grid-template-columns:1fr}
.news-list li a{flex-direction:column;align-items:flex-start;gap:4px}
.news-date{font-size:12px}
}