/* roulang page: index */
:root {
  --color-primary: #2B7DBF;
  --color-primary-light: #E8F1F9;
  --color-primary-dark: #1D5C8F;
  --color-accent: #E05A4E;
  --color-accent-light: #FDEBE9;
  --color-bg: #F6F8FA;
  --color-surface: #FFFFFF;
  --color-text: #1F2A36;
  --color-text-secondary: #5B6B7A;
  --color-border: #E2E9F0;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 2px 8px rgba(31,42,54,0.06), 0 8px 24px rgba(31,42,54,0.06);
  --shadow-card-hover: 0 4px 12px rgba(31,42,54,0.10), 0 16px 32px rgba(31,42,54,0.10);
  --space-section: 80px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased}
a{color:var(--color-primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--color-primary-dark)}
img{max-width:100%;display:block}
button{font-family:inherit;cursor:pointer}
.container{max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px}
.section{padding-top:var(--space-section);padding-bottom:var(--space-section)}
.section-title{font-size:28px;font-weight:800;line-height:1.35;margin:0 0 12px;letter-spacing:-0.02em}
.section-desc{font-size:15px;color:var(--color-text-secondary);max-width:680px;line-height:1.75;margin:0 0 40px}
@media(max-width:767px){
  .container{padding-left:16px;padding-right:16px}
  .section{padding-top:48px;padding-bottom:48px}
  .section-title{font-size:22px}
}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,0.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--color-border);transition:box-shadow .3s ease}
.site-header.scrolled{box-shadow:0 4px 20px rgba(31,42,54,0.08)}
.nav-wrap{display:flex;align-items:center;height:64px;gap:24px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,var(--color-primary),var(--color-primary-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:16px}
.logo-text{font-size:19px;font-weight:800;color:var(--color-text);letter-spacing:-0.01em;white-space:nowrap}
.logo-badge{display:inline-block;background:var(--color-accent);color:#fff;font-size:11px;font-weight:600;padding:2px 8px;border-radius:var(--radius-badge);margin-left:2px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-links a{position:relative;display:block;padding:8px 14px;font-size:14px;font-weight:500;color:var(--color-text-secondary);border-radius:6px;transition:all .2s ease}
.nav-links a:hover{color:var(--color-primary);background:var(--color-primary-light)}
.nav-links a.active{color:var(--color-primary);font-weight:600;background:var(--color-primary-light)}
.nav-links a.active::after{content:"";position:absolute;left:14px;right:14px;bottom:-2px;height:2px;background:var(--color-primary);border-radius:2px}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-cta{background:var(--color-accent);color:#fff !important;font-size:14px;font-weight:600;padding:9px 20px;border-radius:var(--radius-btn);transition:all .2s ease;display:inline-flex;align-items:center;gap:6px;box-shadow:0 2px 8px rgba(224,90,78,0.2)}
.nav-cta:hover{background:#C94A3F;transform:translateY(-2px);box-shadow:0 4px 14px rgba(224,90,78,0.3)}
.nav-cta:active{transform:translateY(0)}
.nav-cta:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
.menu-btn{display:none;background:none;border:1px solid var(--color-border);border-radius:8px;width:40px;height:40px;align-items:center;justify-content:center;color:var(--color-text)}
.mobile-menu{display:none;background:#fff;border-bottom:1px solid var(--color-border);padding:12px 16px 20px}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:12px 14px;font-size:15px;font-weight:500;border-radius:8px;color:var(--color-text-secondary)}
.mobile-menu a:hover{background:var(--color-primary-light);color:var(--color-primary)}
.mobile-menu a.active{background:var(--color-primary-light);color:var(--color-primary);font-weight:600}
@media(max-width:1023px){
  .nav-links{display:none}
  .nav-cta{display:none}
  .menu-btn{display:flex}
}
@media(max-width:640px){
  .logo-text{font-size:17px}
  .logo-badge{display:none}
}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;font-size:14px;font-weight:600;padding:12px 24px;border-radius:var(--radius-btn);transition:all .2s ease;border:2px solid transparent;text-decoration:none !important;line-height:1.2}
.btn-primary{background:var(--color-accent);color:#fff;box-shadow:0 2px 8px rgba(224,90,78,0.2)}
.btn-primary:hover{background:#C94A3F;transform:translateY(-2px);box-shadow:0 6px 18px rgba(224,90,78,0.3);color:#fff}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 6px rgba(224,90,78,0.2)}
.btn-primary:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}
.btn-outline{background:#fff;color:var(--color-primary);border-color:var(--color-primary)}
.btn-outline:hover{background:var(--color-primary-light);transform:translateY(-2px);color:var(--color-primary-dark);border-color:var(--color-primary-dark)}
.btn-outline:active{transform:translateY(0)}
.btn-outline:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}
.btn-light{background:#fff;color:var(--color-primary-dark)}
.btn-light:hover{background:var(--color-primary-light);transform:translateY(-2px)}
.btn-small{padding:8px 16px;font-size:13px}

/* Hero */
.hero{position:relative;background:url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(255,255,255,0.97) 0%,rgba(255,255,255,0.90) 40%,rgba(255,255,255,0.35) 75%,rgba(255,255,255,0.15) 100%)}
.hero-content{position:relative;z-index:2;padding:72px 0 56px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:var(--color-primary-light);color:var(--color-primary-dark);font-size:13px;font-weight:600;padding:6px 16px;border-radius:var(--radius-badge);margin-bottom:20px}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--color-accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}
.hero-title{font-size:36px;font-weight:800;line-height:1.25;letter-spacing:-0.02em;margin:0 0 16px;color:var(--color-text)}
.hero-title .hl{color:var(--color-primary)}
.hero-sub{font-size:15px;color:var(--color-text-secondary);max-width:520px;line-height:1.8;margin:0 0 32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:16px;margin-bottom:36px}
.hero-stats{display:flex;gap:36px;flex-wrap:wrap}
.hero-stats .stat{position:relative}
.hero-stats .stat .num{font-size:28px;font-weight:800;color:var(--color-text);font-variant-numeric:tabular-nums;line-height:1.2}
.hero-stats .stat .num i{font-style:normal;color:var(--color-accent)}
.hero-stats .stat .label{font-size:13px;color:var(--color-text-secondary);margin-top:4px}
.bento-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;margin-top:32px;position:relative;z-index:2}
.bento-card{background:rgba(255,255,255,0.92);border:1px solid rgba(255,255,255,0.8);border-radius:16px;padding:24px;box-shadow:var(--shadow-card);backdrop-filter:blur(4px);transition:transform .3s ease,box-shadow .3s ease}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.bento-icon{width:44px;height:44px;border-radius:10px;background:var(--color-primary-light);display:flex;align-items:center;justify-content:center;margin-bottom:14px;color:var(--color-primary)}
.bento-title{font-size:16px;font-weight:700;margin-bottom:6px}
.bento-desc{font-size:13px;color:var(--color-text-secondary);line-height:1.65}
.bento-bar{grid-column:1/3;display:flex;align-items:center;justify-content:space-between;gap:16px;background:linear-gradient(90deg,var(--color-primary-dark),var(--color-primary));color:#fff;border-radius:14px;padding:18px 28px;box-shadow:0 8px 24px rgba(29,92,143,0.3)}
.bento-bar .txt{font-size:15px;font-weight:600}
.bento-bar .btn{background:#fff;color:var(--color-primary-dark);border:none}
.bento-bar .btn:hover{background:var(--color-primary-light)}
@media(max-width:1023px){
  .hero-title{font-size:30px}
  .bento-grid{grid-template-columns:1fr}
  .bento-bar{grid-column:1}
}
@media(max-width:640px){
  .hero-content{padding:48px 0 40px}
  .hero-title{font-size:26px}
  .hero-cta{flex-direction:column}
  .hero-cta .btn{width:100%}
  .hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  .bento-card{padding:18px}
  .bento-bar{flex-direction:column;align-items:flex-start;paddding:16px 20px}
  .bento-bar .btn{width:100%}
}

/* Cards rail */
.rail{position:relative}
.rail-scroll{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;overflow-x:auto;padding-bottom:12px;scrollbar-width:thin}
.rail-scroll::-webkit-scrollbar{height:6px}
.rail-scroll::-webkit-scrollbar-track{background:var(--color-primary-light);border-radius:10px}
.rail-scroll::-webkit-scrollbar-thumb{background:var(--color-primary);border-radius:10px}
@media(max-width:1023px){.rail-scroll{grid-template-columns:repeat(3,1fr)}}
@media(max-width:767px){.rail-scroll{grid-template-columns:repeat(2,1fr)}}
@media(max-width:520px){.rail-scroll{grid-template-columns:1fr}}
.content-card{background:var(--color-surface);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);border:1px solid var(--color-border);transition:transform .3s ease,box-shadow .3s ease;display:flex;flex-direction:column}
.content-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.content-card .cover{position:relative;aspect-ratio:4/3;overflow:hidden;background:var(--color-primary-light)}
.content-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.content-card:hover .cover img{transform:scale(1.05)}
.content-card .badge{position:absolute;top:12px;left:12px;z-index:2;background:var(--color-accent);color:#fff;font-size:11px;font-weight:600;padding:4px 10px;border-radius:var(--radius-badge)}
.content-card .body{padding:18px;display:flex;flex-direction:column;flex:1}
.content-card h3{font-size:16px;font-weight:700;line-height:1.45;margin:0 0 8px;color:var(--color-text);transition:color .2s ease}
.content-card h3 a{color:inherit}
.content-card h3 a:hover{color:var(--color-primary)}
.content-card .summary{font-size:13px;color:var(--color-text-secondary);line-height:1.65;margin:0 0 14px;flex:1}
.content-card .meta{display:flex;align-items:center;justify-content:space-between;font-size:12px;color:#9AAAB8;border-top:1px solid var(--color-border);padding-top:12px}

/* Brand bar */
.update-bar{background:linear-gradient(135deg,#FDEBE9,#FFF6F5);border:1px solid #FADAD7;border-radius:16px;padding:24px 32px;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px}
.update-bar .left{display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.update-bar .tag-item{display:flex;align-items:center;gap:8px}
.update-bar .tag-item .ic{width:38px;height:38px;border-radius:10px;background:#fff;display:flex;align-items:center;justify-content:center;color:var(--color-accent);font-size:18px;box-shadow:0 2px 6px rgba(224,90,78,0.1)}
.update-bar .tag-item .t1{font-size:13px;color:var(--color-text-secondary)}
.update-bar .tag-item .t2{font-size:17px;font-weight:800;color:var(--color-text);font-variant-numeric:tabular-nums}
@media(max-width:640px){
  .update-bar{padding:16px 18px}
  .update-bar .left{gap:12px;width:100%}
  .update-bar .btn{width:100%}
}

/* Feature cards */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature-card{position:relative;background:var(--color-surface);border-radius:var(--radius-card);padding:28px 26px;box-shadow:var(--shadow-card);border:1px solid var(--color-border);overflow:hidden;transition:transform .3s ease,box-shadow .3s ease}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.feature-num{position:absolute;right:18px;top:12px;font-size:52px;font-weight:800;color:var(--color-primary-light);line-height:1;pointer-events:none;transition:color .3s ease}
.feature-card:hover .feature-num{color:var(--color-primary-light)}
.feature-icon{width:48px;height:48px;border-radius:12px;background:var(--color-primary-light);display:flex;align-items:center;justify-content:center;color:var(--color-primary);margin-bottom:18px;transition:background .3s ease,color .3s ease}
.feature-card:hover .feature-icon{background:var(--color-primary);color:#fff}
.feature-card h3{font-size:18px;font-weight:700;margin:0 0 10px;color:var(--color-text)}
.feature-card p{font-size:14px;color:var(--color-text-secondary);line-height:1.7;margin:0}
@media(max-width:767px){.feature-grid{grid-template-columns:1fr}}

/* Scenes */
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.scene-list{display:flex;flex-direction:column;gap:0}
.scene-item{display:flex;gap:20px;padding:24px 0;border-bottom:1px solid var(--color-border);transition:padding-left .3s ease}
.scene-item:first-child{padding-top:0}
.scene-item:last-child{border-bottom:none;padding-bottom:0}
.scene-item:hover{padding-left:8px}
.scene-item .no{font-size:15px;font-weight:800;color:var(--color-accent);flex-shrink:0;line-height:1.4;width:40px}
.scene-item h4{font-size:16px;font-weight:700;margin:0 0 6px}
.scene-item p{font-size:14px;color:var(--color-text-secondary);line-height:1.7;margin:0}
.scene-visual{position:relative;border-radius:16px;overflow:hidden;box-shadow:var(--shadow-card-hover)}
.scene-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:5/4}
.scene-visual .cap{position:absolute;left:16px;right:16px;bottom:16px;background:rgba(255,255,255,0.92);backdrop-filter:blur(4px);border-radius:12px;padding:14px 18px;font-size:14px;font-weight:600;color:var(--color-text)}
@media(max-width:992px){.scene-grid{grid-template-columns:1fr}}
@media(max-width:640px){.scene-item{padding:18px 0}.scene-item .no{width:32px}}

/* News / info */
.info-grid{display:grid;grid-template-columns:1.6fr 1fr;gap:32px}
.news-list a{display:block;padding:18px 0;border-bottom:1px solid var(--color-border);transition:padding-left .3s ease;color:var(--color-text)}
.news-list a:first-child{padding-top:0}
.news-list a:last-child{border-bottom:none;padding-bottom:0}
.news-list a:hover{padding-left:12px;color:var(--color-primary)}
.news-list .title-line{display:flex;align-items:center;gap:10px}
.news-list .arrow{font-size:12px;color:var(--color-primary);opacity:0;transform:translateX(-6px);transition:all .3s ease}
.news-list a:hover .arrow{opacity:1;transform:translateX(0)}
.news-list h4{font-size:15px;font-weight:600;margin:0;line-height:1.5}
.news-list p{font-size:13px;color:var(--color-text-secondary);margin:6px 0 0;line-height:1.6}
.news-list .date{font-size:12px;color:#9AAAB8;flex-shrink:0;white-space:nowrap;margin-left:auto}
.side-card{background:var(--color-surface);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-card);border:1px solid var(--color-border);margin-bottom:20px}
.side-card:last-child{margin-bottom:0}
.side-card h3{font-size:16px;font-weight:700;margin:0 0 16px;padding-bottom:12px;border-bottom:1px solid var(--color-border)}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag-chip{display:inline-block;background:var(--color-primary-light);color:var(--color-primary-dark);font-size:13px;font-weight:500;padding:6px 14px;border-radius:var(--radius-badge);transition:all .2s ease}
.tag-chip:hover{background:var(--color-primary);color:#fff;transform:translateY(-1px)}
.rank-list{list-style:none;margin:0;padding:0}
.rank-list li{display:flex;align-items:center;gap:12px;padding:10px 0;border-bottom:1px solid var(--color-border);font-size:14px}
.rank-list li:last-child{border-bottom:none}
.rank-list .rno{width:22px;height:22px;border-radius:6px;background:var(--color-primary-light);color:var(--color-primary-dark);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.rank-list li:nth-child(1) .rno{background:var(--color-accent);color:#fff}
.rank-list li:nth-child(2) .rno{background:var(--color-accent);color:#fff}
.rank-list li:nth-child(3) .rno{background:var(--color-accent);color:#fff}
.rank-list .views{margin-left:auto;font-size:12px;color:#9AAAB8;white-space:nowrap}
.update-dot{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--color-text-secondary);padding:8px 0}
.update-dot .dot-n{display:inline-block;width:8px;height:8px;border-radius:50%;background:#4CAF50}
.update-dot .dot-c{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--color-accent)}
.update-dot .dot-p{display:inline-block;width:8px;height:8px;border-radius:50%;background:var(--color-primary)}
@media(max-width:992px){.info-grid{grid-template-columns:1fr}}
@media(max-width:640px){.news-list .title-line{flex-wrap:wrap;gap:6px}.news-list .date{display:none}}

/* Social proof */
.proof-bg{background:var(--color-primary-light);border-radius:24px;padding:60px 48px;position:relative;overflow:hidden}
.proof-bg::before{content:"";position:absolute;top:-60px;right:-60px;width:180px;height:180px;background:radial-gradient(circle,rgba(43,125,191,0.12) 0%,transparent 70%)}
.proof-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-bottom:48px;position:relative;z-index:2}
.proof-stats .item{text-align:center;padding:20px 12px;background:rgba(255,255,255,0.7);border-radius:14px;border:1px solid rgba(255,255,255,0.9)}
.proof-stats .num{font-size:38px;font-weight:800;color:var(--color-primary-dark);font-variant-numeric:tabular-nums;line-height:1.2}
.proof-stats .num span{color:var(--color-accent)}
.proof-stats .label{font-size:13px;color:var(--color-text-secondary);margin-top:6px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;position:relative;z-index:2}
.review-card{background:var(--color-surface);border-radius:var(--radius-card);padding:26px;box-shadow:var(--shadow-card);border:1px solid var(--color-border);transition:transform .3s ease,box-shadow .3s ease}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-card-hover)}
.review-card .head{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.review-card .avatar{width:48px;height:48px;border-radius:50%;background:var(--color-primary-light);display:flex;align-items:center;justify-content:center;color:var(--color-primary);font-weight:700;font-size:18px}
.review-card .name{font-size:15px;font-weight:600}
.review-card .stars{font-size:14px;color:#F5A623;letter-spacing:2px;margin-top:2px}
.review-card .text{font-size:14px;color:var(--color-text-secondary);line-height:1.7;margin:0}
@media(max-width:992px){.proof-bg{padding:40px 24px}}
@media(max-width:767px){
  .proof-stats{grid-template-columns:repeat(2,1fr);gap:14px}
  .proof-stats .num{font-size:28px}
  .review-grid{grid-template-columns:1fr}
}

/* Guide + FAQ */
.guide-wrap{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;align-items:start}
.step-card{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--color-border)}
.step-card:first-child{padding-top:0}
.step-card:last-child{border-bottom:none}
.step-no{width:40px;height:40px;border-radius:10px;background:var(--color-primary);color:#fff;font-size:15px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.step-card h4{font-size:16px;font-weight:700;margin:0 0 6px}
.step-card p{font-size:14px;color:var(--color-text-secondary);line-height:1.7;margin:0}
.faq-wrap{background:var(--color-surface);border-radius:16px;box-shadow:var(--shadow-card);border:1px solid var(--color-border);overflow:hidden}
.faq-item{border-bottom:1px solid var(--color-border)}
.faq-item:last-child{border-bottom:none}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;background:none;border:none;font-size:16px;font-weight:500;color:var(--color-text);text-align:left;transition:background .2s ease}
.faq-q:hover{background:var(--color-primary-light)}
.faq-q:focus-visible{outline:2px solid var(--color-primary);outline-offset:-2px;border-radius:4px}
.faq-q .icon{width:24px;height:24px;border-radius:50%;background:var(--color-primary-light);color:var(--color-primary);display:flex;align-items:center;justify-content:center;font-size:16px;transition:all .3s ease;flex-shrink:0}
.faq-item.open .faq-q{background:var(--color-primary-light)}
.faq-item.open .icon{transform:rotate(45deg);background:var(--color-primary);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a .in{padding:0 24px 20px;font-size:15px;color:var(--color-text-secondary);line-height:1.75}
@media(max-width:992px){.guide-wrap{grid-template-columns:1fr}}

/* CTA */
.cta-block{background:linear-gradient(100deg,var(--color-primary-light),#F0F7FD);border-radius:24px;padding:64px 48px;text-align:center;position:relative;overflow:hidden}
.cta-block::before{content:"";position:absolute;left:-40px;bottom:-40px;width:160px;height:160px;border-radius:50%;background:rgba(43,125,191,0.08)}
.cta-block::after{content:"";position:absolute;right:40px;top:-30px;width:80px;height:80px;transform:rotate(45deg);background:rgba(224,90,78,0.08)}
.cta-block h2{font-size:30px;font-weight:800;margin:0 0 12px;letter-spacing:-0.02em}
.cta-block p{font-size:15px;color:var(--color-text-secondary);max-width:480px;margin:0 auto 28px;line-height:1.75}
.cta-block .btn{font-size:15px;padding:14px 32px}
@media(max-width:640px){.cta-block{padding:40px 24px}.cta-block h2{font-size:24px}}

/* Footer */
.site-footer{background:#14283B;color:rgba(255,255,255,0.72);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1.2fr;gap:48px;padding-bottom:40px}
.footer-brand .logo-text{color:#fff;font-size:20px}
.footer-brand p{font-size:14px;line-height:1.7;margin:16px 0 0;color:rgba(255,255,255,0.6);max-width:280px}
.footer-col h4{color:#fff;font-size:15px;font-weight:600;margin:0 0 18px}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{color:rgba(255,255,255,0.65);font-size:14px;transition:all .2s ease;display:inline-block}
.footer-col ul a:hover{color:#fff;transform:translateX(4px)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px;color:rgba(255,255,255,0.45)}
@media(max-width:992px){.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.footer-grid{grid-template-columns:1fr;gap:32px}.footer-bottom{flex-direction:column;text-align:center}}

/* Mobile bottom bar */
.mobile-bar{position:fixed;bottom:0;left:0;right:0;z-index:50;background:rgba(255,255,255,0.96);backdrop-filter:blur(8px);border-top:1px solid var(--color-border);box-shadow:0 -4px 16px rgba(31,42,54,0.06);display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 20px;min-height:64px}
.mobile-bar .txt{font-size:14px;font-weight:600;color:var(--color-text);white-space:nowrap}
.mobile-bar .btn{font-size:13px;padding:9px 18px}
@media(max-width:640px){.mobile-bar{min-height:52px;padding:8px 16px}.mobile-bar .txt{font-size:12px}.mobile-bar .btn{padding:8px 14px;font-size:12px}}
body{padding-bottom:0}
.home-main{padding-bottom:88px}
@media(max-width:640px){.home-main{padding-bottom:72px}}

/* roulang page: category1 */
:root {
  --color-primary: #2B7DBF;
  --color-primary-light: #E8F1F9;
  --color-primary-dark: #1D5C8F;
  --color-accent: #E05A4E;
  --color-accent-light: #FDEBE9;
  --color-bg: #F6F8FA;
  --color-surface: #FFFFFF;
  --color-text: #1F2A36;
  --color-text-secondary: #5B6B7A;
  --color-border: #E2E9F0;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-badge: 999px;
  --shadow-card: 0 2px 8px rgba(31,42,54,0.06), 0 8px 24px rgba(31,42,54,0.06);
  --shadow-card-hover: 0 4px 12px rgba(31,42,54,0.10), 0 16px 32px rgba(31,42,54,0.10);
  --space-section: 80px;
}
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 32px; padding-right: 32px; }
.section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.section-title { font-size: 28px; font-weight: 800; line-height: 1.35; margin: 0 0 12px; letter-spacing: -0.02em; }
.section-desc { font-size: 15px; color: var(--color-text-secondary); max-width: 680px; line-height: 1.75; margin: 0 0 40px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow .3s ease;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(31,42,54,0.08); }
.nav-wrap { display: flex; align-items: center; height: 64px; gap: 24px; }
.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 800; font-size: 16px;
}
.logo-text { font-size: 19px; font-weight: 800; color: var(--color-text); letter-spacing: -0.01em; white-space: nowrap; }
.logo-badge {
  display: inline-block; background: var(--color-accent); color: #fff;
  font-size: 11px; font-weight: 600; padding: 2px 8px;
  border-radius: var(--radius-badge); margin-left: 2px; white-space: nowrap;
}
.nav-links { display: flex; align-items: center; gap: 4px; flex: 1; justify-content: center; }
.nav-links a {
  position: relative; display: block; padding: 8px 14px;
  font-size: 14px; font-weight: 500; color: var(--color-text-secondary);
  border-radius: 6px; transition: all .2s ease;
}
.nav-links a:hover { color: var(--color-primary); background: var(--color-primary-light); }
.nav-links a.active { color: var(--color-primary); font-weight: 600; background: var(--color-primary-light); }
.nav-links a.active::after {
  content: "";
  position: absolute; left: 14px; right: 14px; bottom: -2px;
  height: 2px; background: var(--color-primary); border-radius: 2px;
}
.nav-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.nav-cta {
  background: var(--color-accent); color: #fff !important;
  font-size: 14px; font-weight: 600; padding: 9px 20px;
  border-radius: var(--radius-btn); transition: all .2s ease;
  display: inline-flex; align-items: center; gap: 6px;
  box-shadow: 0 2px 8px rgba(224,90,78,0.2);
}
.nav-cta:hover { background: #C94A3F; transform: translateY(-2px); box-shadow: 0 4px 14px rgba(224,90,78,0.3); color: #fff; }
.nav-cta:active { transform: translateY(0); }
.nav-cta:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.menu-btn {
  display: none; background: none; border: 1px solid var(--color-border);
  border-radius: 8px; width: 40px; height: 40px;
  align-items: center; justify-content: center; color: var(--color-text);
}
.mobile-menu { display: none; background: #fff; border-bottom: 1px solid var(--color-border); padding: 12px 16px 20px; }
.mobile-menu.open { display: block; }
.mobile-menu a {
  display: block; padding: 12px 14px; font-size: 15px; font-weight: 500;
  border-radius: 8px; color: var(--color-text-secondary);
}
.mobile-menu a:hover { background: var(--color-primary-light); color: var(--color-primary); }
.mobile-menu a.active { background: var(--color-primary-light); color: var(--color-primary); font-weight: 600; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  font-size: 14px; font-weight: 600; padding: 12px 24px;
  border-radius: var(--radius-btn); transition: all .2s ease;
  border: 2px solid transparent; text-decoration: none !important; line-height: 1.2;
}
.btn-primary { background: var(--color-accent); color: #fff; box-shadow: 0 2px 8px rgba(224,90,78,0.2); }
.btn-primary:hover { background: #C94A3F; transform: translateY(-2px); box-shadow: 0 6px 18px rgba(224,90,78,0.3); color: #fff; }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 6px rgba(224,90,78,0.2); }
.btn-primary:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.btn-outline { background: #fff; color: var(--color-primary); border-color: var(--color-primary); }
.btn-outline:hover { background: var(--color-primary-light); transform: translateY(-2px); color: var(--color-primary-dark); border-color: var(--color-primary-dark); }
.btn-outline:active { transform: translateY(0); }
.btn-outline:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.btn-small { padding: 8px 16px; font-size: 13px; }

/* Category Hero */
.category-hero {
  position: relative;
  background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
  overflow: hidden;
}
.category-hero::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(100deg, rgba(255,255,255,0.98) 0%, rgba(255,255,255,0.92) 45%, rgba(255,255,255,0.50) 78%, rgba(255,255,255,0.20) 100%);
}
.category-hero-content {
  position: relative; z-index: 2;
  padding: 64px 0 56px;
}
.breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--color-text-secondary); margin-bottom: 18px;
}
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb .sep { color: #B0BCC8; }
.breadcrumb .current { color: var(--color-primary); font-weight: 600; }
.category-hero-title {
  font-size: 34px; font-weight: 800; line-height: 1.28;
  letter-spacing: -0.02em; margin: 0 0 14px; color: var(--color-text);
}
.category-hero-title .accent { color: var(--color-accent); }
.category-hero-desc {
  font-size: 15px; color: var(--color-text-secondary);
  max-width: 580px; line-height: 1.8; margin: 0 0 28px;
}
.category-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-meta-strip {
  position: relative; z-index: 2;
  display: flex; flex-wrap: wrap; gap: 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 14px 24px;
  box-shadow: var(--shadow-card);
  margin-bottom: -28px;
  font-size: 13px; color: var(--color-text-secondary);
}
.hero-meta-strip span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta-strip .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-accent); }

/* Filter Bar */
.filter-bar {
  margin-top: 48px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 14px 18px;
  box-shadow: var(--shadow-card);
}
.filter-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.filter-tag {
  display: inline-flex; align-items: center;
  background: #fff; border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: 13px; font-weight: 500;
  padding: 6px 14px; border-radius: var(--radius-badge);
  transition: all .2s ease; cursor: pointer;
}
.filter-tag:hover { border-color: var(--color-primary); color: var(--color-primary); }
.filter-tag.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; font-weight: 600; }
.filter-tag:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.sort-controls { display: flex; align-items: center; gap: 8px; }
.sort-btn {
  background: #fff; border: 1px solid var(--color-border);
  color: var(--color-text-secondary); font-size: 13px; font-weight: 500;
  padding: 6px 14px; border-radius: var(--radius-badge);
  transition: all .2s ease; cursor: pointer;
}
.sort-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.sort-btn.active { background: var(--color-primary-light); border-color: var(--color-primary); color: var(--color-primary-dark); font-weight: 600; }
.sort-btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* Content Grid */
.content-section { padding-top: 52px; padding-bottom: 40px; }
.content-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.content-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
  display: flex; flex-direction: column;
}
.content-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}
.card-cover { position: relative; overflow: hidden; aspect-ratio: 4 / 3; }
.card-cover img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .3s ease;
}
.content-card:hover .card-cover img { transform: scale(1.05); }
.card-badge {
  position: absolute; top: 12px; left: 12px;
  background: var(--color-accent); color: #fff;
  font-size: 11px; font-weight: 600;
  padding: 3px 10px; border-radius: var(--radius-badge);
}
.card-body { padding: 18px 18px 16px; display: flex; flex-direction: column; flex: 1; }
.card-title { font-size: 17px; font-weight: 700; line-height: 1.45; margin: 0 0 6px; color: var(--color-text); }
.card-title a { color: inherit; }
.card-title a:hover { color: var(--color-primary); }
.card-excerpt {
  font-size: 14px; color: var(--color-text-secondary);
  line-height: 1.65; margin: 0 0 14px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.card-meta {
  display: flex; align-items: center; gap: 14px;
  font-size: 13px; color: #8B9AAB;
  border-top: 1px solid var(--color-border);
  padding-top: 12px; margin-top: auto;
}
.card-meta .meta-item { display: inline-flex; align-items: center; gap: 5px; }

/* Pagination */
.pagination-section { padding: 40px 0 60px; }
.pagination { display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap; }
.page-btn {
  min-width: 38px; height: 38px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 500;
  background: #fff; border: 1px solid var(--color-border);
  border-radius: 8px; color: var(--color-text-secondary);
  padding: 0 8px; transition: all .2s ease;
}
.page-btn:hover { border-color: var(--color-primary); color: var(--color-primary); }
.page-btn.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; font-weight: 600; }
.page-btn.disabled { opacity: 0.4; pointer-events: none; }
.page-btn:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; }

/* Features Section */
.features-section { background: var(--color-surface); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 28px 24px 24px;
  box-shadow: var(--shadow-card);
  transition: transform .25s ease, box-shadow .25s ease;
  overflow: hidden;
}
.feature-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-card-hover); }
.feature-num {
  position: absolute; right: 18px; top: 10px;
  font-size: 56px; font-weight: 800; line-height: 1;
  color: rgba(43,125,191,0.10);
  pointer-events: none;
}
.feature-icon {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: var(--color-primary-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary); margin-bottom: 16px;
}
.feature-title { font-size: 17px; font-weight: 700; margin: 0 0 8px; color: var(--color-text); }
.feature-desc { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; margin: 0; }

/* Scene Section */
.scene-section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.scene-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  align-items: center;
}
.scene-items { display: flex; flex-direction: column; gap: 28px; }
.scene-item { display: flex; gap: 16px; }
.scene-index {
  font-size: 22px; font-weight: 800; color: var(--color-primary);
  line-height: 1.2; flex-shrink: 0; min-width: 36px;
}
.scene-item-title { font-size: 16px; font-weight: 600; margin: 0 0 4px; color: var(--color-text); }
.scene-item-desc { font-size: 14px; color: var(--color-text-secondary); margin: 0; line-height: 1.7; }
.scene-image-wrap {
  position: relative; border-radius: var(--radius-card);
  overflow: hidden; box-shadow: var(--shadow-card-hover);
}
.scene-image-wrap img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4/3; }
.scene-image-wrap::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0) 70%, rgba(31,42,54,0.15) 100%);
  pointer-events: none;
}

/* FAQ */
.faq-section { padding-top: var(--space-section); padding-bottom: var(--space-section); }
.faq-wrap {
  max-width: 860px; margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}
.faq-item { border-bottom: 1px solid var(--color-border); }
.faq-item:last-child { border-bottom: none; }
.faq-question {
  display: flex; align-items: center; justify-content: space-between;
  width: 100%; text-align: left;
  background: none; border: none;
  padding: 18px 24px;
  font-size: 16px; font-weight: 500; color: var(--color-text);
  transition: background .2s ease;
  cursor: pointer;
}
.faq-question:hover { background: var(--color-primary-light); }
.faq-question:focus-visible { outline: 2px solid var(--color-primary); outline-offset: -2px; }
.faq-icon {
  width: 24px; height: 24px; flex-shrink: 0;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-primary);
  font-size: 18px; line-height: 1;
  transition: transform .25s ease, background .25s ease, color .25s ease;
}
.faq-item.open .faq-icon { transform: rotate(45deg); background: var(--color-primary); color: #fff; }
.faq-answer {
  max-height: 0; overflow: hidden;
  transition: max-height .3s ease;
}
.faq-answer-inner { padding: 0 24px 18px; font-size: 15px; color: var(--color-text-secondary); line-height: 1.75; }
.faq-item.open .faq-answer { max-height: 300px; }

/* CTA Bar */
.cta-bar {
  background: var(--color-primary-light);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 48px 0;
}
.cta-wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; flex-wrap: wrap;
}
.cta-text { flex: 1; min-width: 240px; }
.cta-text h2 { font-size: 24px; font-weight: 800; margin: 0 0 6px; color: var(--color-text); }
.cta-text p { font-size: 14px; color: var(--color-text-secondary); margin: 0; }
.cta-action { flex-shrink: 0; }

/* Footer */
.site-footer { background: #14283B; color: rgba(255,255,255,0.8); padding: 64px 0 32px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .logo-text { color: #fff; font-size: 20px; font-weight: 800; margin-bottom: 12px; display: block; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.65); line-height: 1.75; margin: 0; max-width: 340px; }
.footer-col h4 { color: #fff; font-size: 15px; font-weight: 600; margin: 0 0 14px; }
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.65); font-size: 14px; transition: all .2s ease; }
.footer-col a:hover { color: #fff; padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding-top: 24px;
  display: flex; flex-wrap: wrap; gap: 16px;
  font-size: 13px; color: rgba(255,255,255,0.5);
}

/* Responsive */
@media (min-width: 769px) {
  .nav-links { display: flex; }
  .nav-cta { display: inline-flex; }
  .menu-btn { display: none; }
}
@media (max-width: 768px) {
  .container { padding-left: 16px; padding-right: 16px; }
  .section { padding-top: 48px; padding-bottom: 48px; }
  .section-title { font-size: 22px; }
  .nav-wrap { gap: 12px; }
  .nav-links { display: none; }
  .nav-cta { display: none; }
  .menu-btn { display: flex; }
  .logo-text { font-size: 17px; }
  .logo-badge { display: none; }
  .category-hero-content { padding: 48px 0 44px; }
  .category-hero-title { font-size: 28px; }
  .hero-meta-strip { margin-bottom: 0; padding: 12px 16px; gap: 12px; }
  .content-grid { grid-template-columns: 1fr; gap: 16px; }
  .features-grid { grid-template-columns: 1fr; gap: 16px; }
  .scene-wrap { grid-template-columns: 1fr; gap: 32px; }
  .filter-bar { flex-direction: column; align-items: flex-start; }
  .filter-tags { overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; width: 100%; }
  .filter-tag { flex-shrink: 0; }
  .sort-controls { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .cta-wrap { flex-direction: column; align-items: flex-start; }
  .cta-action { width: 100%; }
  .cta-action .btn { width: 100%; }
  .pagination { gap: 4px; }
  .page-btn { min-width: 34px; height: 34px; font-size: 13px; }
}
@media (max-width: 1024px) and (min-width: 769px) {
  .content-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
}