/* roulang page: index */
:root{
      --primary:#3b82c4;
      --primary-dark:#24659f;
      --primary-soft:#eaf4fc;
      --accent:#c48672;
      --bg:#f5f8fc;
      --surface:#fff;
      --text:#17263a;
      --muted:#64748b;
      --border:#dce6f0;
      --shadow:0 18px 48px rgba(38,78,113,.10);
      --shadow-hover:0 24px 55px rgba(38,78,113,.17);
      --radius:18px;
      --pill:999px;
      --container:1180px;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.8;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);transition:.25s}
    .nav{height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.4px;white-space:nowrap}
    .logo-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 8px 18px rgba(59,130,196,.25)}
    .nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
    .nav-links a{padding:9px 14px;border-radius:10px;color:var(--muted);transition:.2s}
    .nav-links a:hover,.nav-links a:focus-visible,.nav-links a.active{color:var(--primary-dark);background:var(--primary-soft)}
    .language{display:flex;padding:4px;border:1px solid var(--border);border-radius:var(--pill);background:#fff;font-size:12px;color:var(--muted)}
    .language span{padding:4px 10px;border-radius:var(--pill)}
    .language .current{background:var(--primary-soft);color:var(--primary-dark);font-weight:700}
    .menu-btn{display:none;border:1px solid var(--border);background:#fff;border-radius:10px;padding:8px 11px;color:var(--primary-dark)}
    .hero{padding:82px 0 74px;background:linear-gradient(135deg,#eef7ff 0%,#f7fbff 55%,#fff 100%);border-bottom:1px solid var(--border)}
    .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}
    .eyebrow,.badge{display:inline-flex;align-items:center;gap:7px;border-radius:var(--pill);font-size:12px;font-weight:700}
    .eyebrow{color:var(--primary-dark);background:#dceefd;padding:7px 12px}
    .eyebrow i{width:7px;height:7px;border-radius:50%;background:#65a9dd}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,64px);line-height:1.16;letter-spacing:-2px;margin:20px 0 22px;max-width:680px}
    .hero-copy{font-size:17px;color:var(--muted);max-width:620px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0 22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 20px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.2s}
    .btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(59,130,196,.22)}
    .btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 15px 28px rgba(59,130,196,.3)}
    .btn-primary:active,.btn-secondary:active{transform:translateY(1px)}
    .btn-secondary{background:#fff;color:var(--primary-dark);border-color:#bdd5e8}
    .btn-secondary:hover{background:var(--primary-soft);border-color:var(--primary)}
    .btn:focus-visible,.nav-links a:focus-visible,.faq-question:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(59,130,196,.28);outline-offset:3px}
    .hero-note{font-size:13px;color:var(--muted)}
    .hero-board{position:relative;min-height:390px;padding:24px;border:1px solid #cfe0ee;border-radius:26px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
    .hero-board:before{content:"";position:absolute;width:210px;height:210px;border-radius:50%;background:#e7f3fc;right:-70px;top:-75px}
    .board-top{display:flex;justify-content:space-between;align-items:center;position:relative;margin-bottom:22px}
    .board-title{font-weight:800;font-size:18px}
    .status{color:#3176ad;background:#edf7ff;padding:5px 10px;border-radius:var(--pill);font-size:12px}
    .preview-main{display:grid;grid-template-columns:150px 1fr;gap:19px;align-items:center;position:relative}
    .cover{height:190px;border-radius:15px;background:linear-gradient(145deg,#87b9db,#e6d8d0);position:relative;overflow:hidden}
    .cover:after{content:"中文字幕";position:absolute;left:13px;bottom:13px;color:#fff;background:rgba(24,50,73,.62);padding:4px 8px;border-radius:7px;font-size:12px}
    .preview-main h3{font-size:21px;line-height:1.4;margin:8px 0}
    .meta{font-size:13px;color:var(--muted)}
    .tag-row{display:flex;gap:7px;flex-wrap:wrap;margin:13px 0}
    .badge{padding:4px 9px;background:#f1f5f9;color:#5d7187;font-weight:600}
    .badge.blue{background:#e8f3fc;color:#2870ac}
    .badge.warm{background:#fbf0eb;color:#a76b59}
    .safe-note{position:absolute;bottom:18px;left:24px;right:24px;padding:11px 14px;border-radius:12px;background:#f8fafc;color:var(--muted);font-size:12px}
    .section{padding:94px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:35px}
    .section-kicker{color:var(--primary);font-size:12px;font-weight:800;letter-spacing:1px}
    h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-1px;margin:8px 0 10px}
    .section-desc{color:var(--muted);max-width:610px;margin:0}
    .link-arrow{color:var(--primary-dark);font-weight:700;white-space:nowrap}
    .link-arrow:hover{color:var(--primary)}
    .entry-layout{display:grid;grid-template-columns:1.3fr .7fr;gap:22px}
    .entry-card,.update-card,.info-card,.route,.security,.app-panel,.quote,.contact-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);transition:.25s}
    .entry-card:hover,.update-card:hover,.info-card:hover,.route:hover,.quote:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#b9d3e8}
    .entry-card{padding:30px;min-height:230px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(135deg,#fff,#f0f8ff)}
    .entry-card h3,.update-card h3,.info-card h3{font-size:21px;margin:12px 0 7px}
    .entry-card p,.update-card p,.info-card p{color:var(--muted);margin-bottom:0}
    .entry-card .entry-no{font-size:42px;font-weight:800;color:#c8e0f2;line-height:1}
    .small-entries{display:grid;gap:22px}
    .update-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}
    .update-card{padding:24px;display:grid;grid-template-columns:112px 1fr;gap:20px}
    .thumb{height:112px;border-radius:13px;background:linear-gradient(135deg,#d9eaf5,#f0ddd6);position:relative}
    .thumb.alt{background:linear-gradient(135deg,#d8e0ef,#e9f1e7)}
    .thumb:after{content:"18+";position:absolute;right:8px;top:8px;background:rgba(23,38,58,.75);color:#fff;border-radius:6px;padding:1px 5px;font-size:11px}
    .update-list{display:grid;gap:12px}
    .update-line{display:flex;justify-content:space-between;gap:14px;padding:15px 0;border-bottom:1px solid var(--border)}
    .update-line:last-child{border-bottom:0}
    .update-line strong{font-size:14px}
    .update-line span{color:var(--muted);font-size:12px;white-space:nowrap}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
    .metric{padding:28px 18px;border-right:1px solid var(--border)}
    .metric:last-child{border-right:0}
    .metric strong{display:block;font-size:37px;color:var(--text);line-height:1.2}
    .metric span{color:var(--muted);font-size:13px}
    .topic-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;gap:20px;align-items:stretch}
    .info-card{padding:25px;min-height:190px}
    .info-card.featured{min-height:400px;display:flex;flex-direction:column;justify-content:end;background:linear-gradient(160deg,#d7eafb 0%,#fff 65%)}
    .info-card.featured h3{font-size:27px}
    .route-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
    .route{padding:24px}
    .route-number{color:var(--primary);font-size:13px;font-weight:800}
    .route h3{margin:10px 0 6px;font-size:19px}
    .route p{color:var(--muted);font-size:14px;min-height:52px}
    .security-band{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:stretch}
    .security{padding:30px;background:#edf7ff}
    .security h3{font-size:24px}
    .security-list{display:grid;gap:12px;padding:0;margin:20px 0 0;list-style:none}
    .security-list li{display:flex;gap:10px;align-items:flex-start;color:var(--muted)}
    .security-list b{color:var(--primary);font-size:18px;line-height:1.5}
    .quotes{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .quote{padding:23px}
    .quote p{color:var(--muted);font-size:14px}
    .quote footer{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:700;font-size:13px}
    .avatar{width:32px;height:32px;border-radius:50%;background:#cfe4f3;display:grid;place-items:center;color:var(--primary-dark)}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}
    .faq-list{display:grid;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--border);border-radius:13px;overflow:hidden}
    .faq-question{width:100%;border:0;background:#fff;padding:18px 20px;text-align:left;display:flex;justify-content:space-between;gap:15px;color:var(--text);font-weight:700}
    .faq-question span:last-child{color:var(--primary);font-size:21px;line-height:1}
    .faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .app-panel{padding:34px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;background:var(--text);color:#fff}
    .app-panel p{color:#c1d0dd;max-width:620px}
    .app-actions{display:flex;gap:10px;flex-wrap:wrap}
    .app-panel .btn-secondary{background:transparent;color:#fff;border-color:#597082}
    .contact-grid{display:grid;grid-template-columns:1fr .8fr;gap:24px}
    .contact-card{padding:28px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    label{display:grid;gap:7px;color:var(--text);font-weight:700;font-size:13px}
    label.full{grid-column:1/-1}
    input,textarea,select{width:100%;border:1px solid var(--border);border-radius:11px;padding:11px 13px;color:var(--text);background:#fbfdff}
    textarea{min-height:115px;resize:vertical}
    .privacy{font-size:12px;color:var(--muted);margin:13px 0 0}
    .site-footer{padding:35px 0;background:#fff;border-top:1px solid var(--border)}
    .footer-main{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}
    .footer-brand p{color:var(--muted);font-size:13px;max-width:430px}
    .footer-links{display:flex;gap:22px;color:var(--muted);font-size:13px;flex-wrap:wrap}
    .footer-links a:hover{color:var(--primary)}
    .copyright{margin-top:26px;padding-top:18px;border-top:1px solid var(--border);color:#8293a5;font-size:12px}
    @media(max-width:1024px){.hero-grid{gap:35px}.nav{gap:16px}.nav-links a{padding:8px}.topic-grid{grid-template-columns:1fr 1fr}.info-card.featured{grid-row:span 2}.faq-layout{gap:30px}}
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .nav{height:68px}.logo{font-size:14px}.logo-mark{width:30px;height:30px}.menu-btn{display:block;margin-left:auto}.nav-links{display:none;position:absolute;left:16px;right:16px;top:74px;background:#fff;border:1px solid var(--border);border-radius:15px;padding:10px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav-links.show{display:flex}.nav-links a{min-height:44px}.language{order:2}
      .hero{padding:55px 0}.hero-grid,.update-grid,.security-band,.contact-grid,.faq-layout{grid-template-columns:1fr}.hero-board{min-height:350px}.section{padding:68px 0}.section-head{display:block}.section-head .link-arrow{display:inline-block;margin-top:15px}.metrics{grid-template-columns:1fr 1fr}.metric:nth-child(2){border-right:0}.metric:nth-child(-n+2){border-bottom:1px solid var(--border)}.topic-grid{grid-template-columns:1fr}.info-card.featured{min-height:280px;grid-row:auto}.route-grid,.quotes{grid-template-columns:1fr}.app-panel{grid-template-columns:1fr}.footer-main{display:block}.footer-links{margin-top:20px}}
    @media(max-width:520px){
      h1{font-size:36px;letter-spacing:-1.3px}.hero-actions .btn{width:100%}.preview-main{grid-template-columns:96px 1fr}.cover{height:150px}.preview-main h3{font-size:17px}.update-card{grid-template-columns:82px 1fr;gap:14px}.thumb{height:82px}.form-grid{grid-template-columns:1fr}label.full{grid-column:auto}.metrics{margin:0 -1px}.metric strong{font-size:29px}.metric{padding:22px 12px}.app-actions .btn{width:100%}}

/* roulang page: category1 */
:root{
 --primary:#3b82c4;
 --primary-dark:#24659f;
 --primary-soft:#eaf4fc;
 --accent:#c48672;
 --bg:#f5f8fc;
 --surface:#fff;
 --text:#17263a;
 --muted:#64748b;
 --border:#dce6f0;
 --shadow:0 18px 48px rgba(38,78,113,.10);
 --shadow-hover:0 24px 55px rgba(38,78,113,.17);
 --radius:18px;
 --pill:999px;
 --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.8;font-size:15px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 48px),var(--container));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--border);transition:.25s}
.nav{height:76px;display:flex;align-items:center;gap:30px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.4px;white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 8px 18px rgba(59,130,196,.25)}
.nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
.nav-links a{padding:9px 14px;border-radius:10px;color:var(--muted);transition:.2s}
.nav-links a:hover,.nav-links a:focus-visible,.nav-links a.active{color:var(--primary-dark);background:var(--primary-soft)}
.language{display:flex;gap:3px;align-items:center;border:1px solid var(--border);padding:4px;border-radius:var(--pill);font-size:12px;color:var(--muted)}
.language span{padding:5px 9px;border-radius:var(--pill)}
.language .current{background:var(--primary-soft);color:var(--primary-dark);font-weight:700}
.menu-btn{display:none;border:1px solid var(--border);background:#fff;border-radius:10px;padding:8px 11px;color:var(--primary-dark)}
.page-hero{padding:72px 0 64px;background:linear-gradient(135deg,#eef7ff 0%,#f7fbff 58%,#fff 100%);border-bottom:1px solid var(--border)}
.breadcrumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:24px}
.breadcrumb a:hover{color:var(--primary)}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:64px;align-items:center}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:7px;border-radius:var(--pill);font-size:12px;font-weight:700}
.eyebrow{color:var(--primary-dark);background:#dceefd;padding:7px 12px}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:#65a9dd}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,4.5vw,58px);line-height:1.18;letter-spacing:-1.8px;margin:18px 0 20px}
h2{font-size:clamp(27px,3vw,38px);line-height:1.3;letter-spacing:-.8px}
h3{line-height:1.4}
.hero-copy{font-size:17px;color:var(--muted);max-width:650px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:29px 0 18px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 20px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.2s}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(59,130,196,.22)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 15px 28px rgba(59,130,196,.3)}
.btn-primary:active,.btn-secondary:active{transform:translateY(1px)}
.btn-secondary{background:#fff;color:var(--primary-dark);border-color:#bdd5e8}
.btn-secondary:hover{background:var(--primary-soft);border-color:var(--primary)}
.btn:focus-visible,.nav-links a:focus-visible,.faq-question:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(59,130,196,.28);outline-offset:3px}
.hero-note{font-size:13px;color:var(--muted)}
.index-board{background:#fff;border:1px solid #cfe0ee;border-radius:25px;padding:25px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.index-board:after{content:"";position:absolute;width:190px;height:190px;border-radius:50%;background:#e9f5fd;right:-75px;top:-75px}
.board-top,.board-row,.filter-bar{position:relative;z-index:1}
.board-top{display:flex;justify-content:space-between;gap:16px;align-items:center;border-bottom:1px solid var(--border);padding-bottom:18px;margin-bottom:12px}
.board-title{font-size:18px;font-weight:800}
.status{color:#3d8863;background:#eaf7ef;border-radius:var(--pill);padding:5px 9px;font-size:12px;font-weight:700}
.board-row{display:grid;grid-template-columns:42px 1fr auto;gap:14px;align-items:center;padding:17px 0;border-bottom:1px solid #edf2f7}
.board-row:last-child{border-bottom:0}
.row-no{color:#a6c8e2;font-size:22px;font-weight:800}
.row-title{font-weight:700}
.row-meta{font-size:12px;color:var(--muted)}
.section{padding:92px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:34px}
.section-kicker{color:var(--primary);font-size:12px;font-weight:800;letter-spacing:1px}
.section-desc{color:var(--muted);max-width:650px;margin:0}
.filter-wrap{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin-bottom:28px}
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.filter-label{font-weight:800;margin-right:7px}
.filter-tag{border:1px solid var(--border);background:#fff;color:var(--muted);border-radius:var(--pill);padding:7px 13px;font-size:13px;transition:.2s}
.filter-tag:hover,.filter-tag.active{background:var(--primary-soft);color:var(--primary-dark);border-color:#a9cde7}
.index-layout{display:grid;grid-template-columns:235px 1fr;gap:26px;align-items:start}
.side-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);position:sticky;top:100px}
.side-card h3{font-size:18px;margin-bottom:16px}
.side-list{display:grid;gap:8px;list-style:none;margin:0;padding:0}
.side-list a{display:flex;justify-content:space-between;gap:8px;padding:10px 11px;border-radius:10px;color:var(--muted);transition:.2s}
.side-list a:hover,.side-list a.active{background:var(--primary-soft);color:var(--primary-dark);font-weight:700}
.side-list small{color:#9aabba}
.content-list{display:grid;gap:15px}
.content-card{display:grid;grid-template-columns:156px 1fr auto;gap:22px;align-items:center;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:17px;box-shadow:var(--shadow);transition:.25s}
.content-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#b9d3e8}
.cover{height:118px;border-radius:13px;background:linear-gradient(145deg,#d6eafa,#f7fbff 65%,#f3e5df);display:flex;align-items:end;padding:13px;color:var(--primary-dark);font-weight:800;position:relative;overflow:hidden}
.cover:before{content:"字幕";position:absolute;right:12px;top:12px;border-radius:var(--pill);background:rgba(255,255,255,.82);padding:3px 8px;font-size:11px}
.cover span{position:relative;z-index:1}
.content-card h3{font-size:19px;margin:8px 0 5px}
.content-card p{color:var(--muted);font-size:14px;margin:0 0 9px}
.tag-row{display:flex;gap:7px;flex-wrap:wrap}
.badge{padding:4px 9px;background:#f1f5f9;color:#5d7187;font-weight:600}
.badge.blue{background:#e8f3fc;color:#2870ac}
.badge.warm{background:#fbf0eb;color:#a76b59}
.card-time{font-size:12px;color:var(--muted);white-space:nowrap}
.feature-strip{display:grid;grid-template-columns:1.3fr .7fr;gap:22px;background:#e9f5fd;border:1px solid #cce3f3;border-radius:22px;padding:29px;margin-top:28px}
.feature-strip h3{font-size:24px;margin:10px 0 7px}
.feature-strip p{color:var(--muted);margin-bottom:18px}
.feature-note{display:flex;align-items:center;justify-content:center;border-radius:16px;background:#fff;border:1px solid #d7e8f4;color:var(--primary-dark);font-weight:800;text-align:center;padding:25px}
.stat-band{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{padding:25px 0}
.stat strong{display:block;font-size:32px;line-height:1.2;color:var(--primary-dark)}
.stat span{color:var(--muted);font-size:13px}
.info-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px;align-items:stretch}
.info-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.info-card h3{font-size:22px;margin:8px 0}
.info-card p{color:var(--muted)}
.notice-list{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:12px}
.notice-list li{display:flex;gap:10px;color:var(--muted)}
.notice-list b{color:var(--primary);font-size:18px}
.faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}
.faq-list{display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:13px;overflow:hidden}
.faq-question{width:100%;border:0;background:#fff;padding:18px 20px;text-align:left;display:flex;justify-content:space-between;gap:15px;color:var(--text);font-weight:700}
.faq-question span:last-child{color:var(--primary);font-size:21px;line-height:1}
.faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.cta{padding:68px 0;background:#e9f5fd;border-top:1px solid #d2e7f5;border-bottom:1px solid #d2e7f5}
.cta-box{display:flex;justify-content:space-between;align-items:center;gap:30px}
.cta h2{margin-bottom:8px}
.cta p{color:var(--muted);margin:0}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.field{display:grid;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-weight:700;font-size:14px}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--border);border-radius:11px;padding:11px 13px;background:#fbfdff;color:var(--text)}
.field textarea{min-height:110px;resize:vertical}
.form-note{color:var(--muted);font-size:12px;grid-column:1/-1}
.site-footer{background:#fff;border-top:1px solid var(--border);padding:42px 0 25px}
.footer-main{display:flex;justify-content:space-between;gap:40px;padding-bottom:30px}
.footer-brand{max-width:520px}
.footer-brand p{color:var(--muted);font-size:13px;margin:15px 0 0}
.footer-links{display:flex;gap:18px;flex-wrap:wrap;align-content:flex-start;color:var(--muted);font-size:13px}
.footer-links a:hover{color:var(--primary-dark)}
.copyright{border-top:1px solid var(--border);padding-top:19px;color:#8a9aac;font-size:12px}
@media(max-width:900px){
 .nav{gap:14px}.nav-links{gap:2px}.nav-links a{padding:8px 9px}
 .hero-grid,.info-panel{grid-template-columns:1fr;gap:34px}
 .index-layout{grid-template-columns:1fr}.side-card{position:static}
 .stats{grid-template-columns:repeat(2,1fr)}
 .faq-layout{grid-template-columns:1fr;gap:28px}
}
@media(max-width:700px){
 .container{width:min(calc(100% - 32px),var(--container))}
 .nav{height:68px}.logo{font-size:14px}.logo-mark{width:31px;height:31px}
 .language{margin-left:auto}.menu-btn{display:block}
 .nav-links{display:none;position:absolute;left:16px;right:16px;top:74px;padding:10px;background:#fff;border:1px solid var(--border);border-radius:15px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
 .nav-links.show{display:flex}.nav-links a{padding:12px 14px}
 .page-hero{padding:48px 0 45px}.hero-grid{gap:25px}h1{font-size:37px}
 .section{padding:65px 0}.section-head{display:block;margin-bottom:25px}.section-head .section-desc{margin-top:10px}
 .content-card{grid-template-columns:92px 1fr;gap:14px;padding:13px}.cover{height:95px}.content-card .btn{grid-column:2;justify-self:start;min-height:40px;padding:7px 13px;font-size:13px}.card-time{display:block;margin-top:4px}
 .feature-strip{grid-template-columns:1fr;padding:22px}.cta-box{display:block}.cta-box .btn{margin-top:20px}
 .contact-form{grid-template-columns:1fr;padding:20px}.field.full{grid-column:auto}.form-note{grid-column:auto}
 .footer-main{display:block}.footer-links{margin-top:25px}
}
@media(max-width:520px){
 .hero-actions .btn{width:100%}.stats{gap:12px}.stat{padding:19px 0}.stat strong{font-size:27px}
 .filter-wrap{padding:16px;overflow:hidden}.filter-bar{flex-wrap:nowrap;overflow-x:auto;padding-bottom:3px}.filter-label{white-space:nowrap}.filter-tag{white-space:nowrap}
 .content-card h3{font-size:16px}.content-card p{font-size:13px}.tag-row{gap:4px}.badge{font-size:11px;padding:3px 7px}
}

/* roulang page: category2 */
:root{
 --primary:#3b82c4;
 --primary-dark:#24659f;
 --primary-soft:#eaf4fc;
 --accent:#c48672;
 --bg:#f5f8fc;
 --surface:#fff;
 --text:#17263a;
 --muted:#64748b;
 --border:#dce6f0;
 --shadow:0 18px 48px rgba(38,78,113,.10);
 --shadow-hover:0 24px 55px rgba(38,78,113,.17);
 --radius:18px;
 --pill:999px;
 --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.8;font-size:15px}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(calc(100% - 48px),var(--container));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--border);transition:.25s}
.nav{height:76px;display:flex;align-items:center;gap:30px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.4px;white-space:nowrap}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:800;box-shadow:0 8px 18px rgba(59,130,196,.25)}
.nav-links{display:flex;align-items:center;gap:7px;margin-left:auto}
.nav-links a{padding:9px 14px;border-radius:10px;color:var(--muted);transition:.2s}
.nav-links a:hover,.nav-links a:focus-visible,.nav-links a.active{color:var(--primary-dark);background:var(--primary-soft)}
.language{display:flex;gap:3px;padding:4px;border:1px solid var(--border);border-radius:var(--pill);font-size:12px;color:var(--muted);white-space:nowrap}
.language span{padding:4px 9px;border-radius:var(--pill)}
.language .current{background:var(--primary-soft);color:var(--primary-dark);font-weight:700}
.menu-btn{display:none;border:1px solid var(--border);background:#fff;border-radius:10px;padding:8px 11px;color:var(--primary-dark)}
.hero{padding:74px 0 68px;background:linear-gradient(135deg,#eef7ff 0%,#f7fbff 55%,#fff 100%);border-bottom:1px solid var(--border)}
.breadcrumb{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:24px}
.breadcrumb a:hover{color:var(--primary-dark)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:68px;align-items:center}
.eyebrow,.badge{display:inline-flex;align-items:center;gap:7px;border-radius:var(--pill);font-size:12px;font-weight:700}
.eyebrow{color:var(--primary-dark);background:#dceefd;padding:7px 12px}
.eyebrow i{width:7px;height:7px;border-radius:50%;background:#65a9dd}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,5vw,60px);line-height:1.18;letter-spacing:-2px;margin:20px 0 20px}
h2{font-size:clamp(27px,3.5vw,40px);line-height:1.3;letter-spacing:-1px;margin-bottom:14px}
h3{line-height:1.4}
.hero-copy{font-size:17px;color:var(--muted);max-width:620px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:29px 0 20px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:10px 20px;border-radius:14px;border:1px solid transparent;font-weight:700;transition:.2s}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 10px 22px rgba(59,130,196,.22)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 15px 28px rgba(59,130,196,.3)}
.btn-primary:active,.btn-secondary:active{transform:translateY(1px)}
.btn-secondary{background:#fff;color:var(--primary-dark);border-color:#bdd5e8}
.btn-secondary:hover{background:var(--primary-soft);border-color:var(--primary)}
.btn:focus-visible,.nav-links a:focus-visible,.faq-question:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(59,130,196,.28);outline-offset:3px}
.hero-note{font-size:13px;color:var(--muted)}
.hero-board{position:relative;min-height:370px;padding:24px;border:1px solid #cfe0ee;border-radius:26px;background:#fff;box-shadow:var(--shadow);overflow:hidden}
.hero-board:before{content:"";position:absolute;width:220px;height:220px;border-radius:50%;background:#e7f3fc;right:-70px;top:-80px}
.board-top{display:flex;justify-content:space-between;align-items:center;position:relative;margin-bottom:22px}
.board-title{font-weight:800;font-size:18px}
.safe-mark{padding:5px 10px;border-radius:var(--pill);background:#f6eee9;color:#9a6757;font-size:12px;font-weight:700}
.feature-preview{position:relative;display:grid;grid-template-columns:180px 1fr;gap:20px;align-items:center;padding-bottom:22px;border-bottom:1px solid var(--border)}
.cover{min-height:190px;border-radius:16px;background:linear-gradient(145deg,#bcdcf3 0%,#e9f2fa 47%,#d9cbd1 100%);position:relative;overflow:hidden}
.cover:after{content:"字幕专题";position:absolute;bottom:14px;left:14px;padding:4px 9px;border-radius:8px;background:rgba(255,255,255,.78);color:var(--primary-dark);font-weight:700;font-size:12px}
.cover.small{min-height:90px}
.preview-copy h3{font-size:22px;margin:9px 0 7px}
.meta{font-size:13px;color:var(--muted)}
.tag-row{display:flex;gap:7px;flex-wrap:wrap;margin:13px 0}
.badge{padding:4px 9px;background:#f1f5f9;color:#5d7187;font-weight:600}
.badge.blue{background:#e8f3fc;color:#2870ac}
.badge.warm{background:#fbf0eb;color:#a76b59}
.board-strip{display:flex;justify-content:space-between;gap:15px;padding-top:20px;font-size:13px;color:var(--muted)}
.section{padding:94px 0}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:35px}
.section-kicker{color:var(--primary);font-size:12px;font-weight:800;letter-spacing:1px}
.section-desc{color:var(--muted);max-width:640px;margin:0}
.topic-layout{display:grid;grid-template-columns:1.4fr .8fr;gap:22px}
.topic-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);transition:.25s;overflow:hidden}
.topic-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:#b9d3e8}
.topic-card.large{display:grid;grid-template-columns:.9fr 1.1fr;min-height:310px}
.topic-card .topic-body{padding:27px}
.topic-card h3{font-size:24px;margin:12px 0 8px}
.topic-card p{color:var(--muted)}
.topic-side{display:grid;gap:22px}
.topic-side .topic-card{display:grid;grid-template-columns:120px 1fr;min-height:143px}
.topic-side .topic-body{padding:18px}
.topic-side h3{font-size:18px;margin:7px 0 4px}
.stats{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:30px 0}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat{padding:8px 22px;border-right:1px solid var(--border)}
.stat:last-child{border-right:0}
.stat strong{display:block;color:var(--text);font-size:34px;line-height:1.15}
.stat span{display:block;color:var(--muted);font-size:13px;margin-top:6px}
.filter-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:25px}
.filter{border:1px solid var(--border);background:#fff;color:var(--muted);border-radius:var(--pill);padding:8px 14px;transition:.2s}
.filter:hover,.filter.active{color:var(--primary-dark);border-color:#a9cce6;background:var(--primary-soft)}
.masonry{display:grid;grid-template-columns:1.15fr .85fr .85fr;grid-auto-rows:minmax(110px,auto);gap:20px}
.masonry .topic-card:nth-child(1){grid-row:span 2}
.masonry .topic-card:nth-child(4){grid-column:2 / 4}
.masonry .topic-card:nth-child(5){grid-column:1 / 3}
.topic-card.compact{padding:21px}
.topic-card.compact .cover{min-height:125px}
.topic-card.compact h3{font-size:19px;margin:11px 0 5px}
.route-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:22px}
.route-main,.route-mini{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.route-main{padding:30px}
.route-main h3{font-size:24px;margin:12px 0 8px}
.route-list{display:grid;gap:14px;margin:24px 0 0;padding:0;list-style:none}
.route-list li{display:flex;gap:13px;align-items:flex-start;padding-top:14px;border-top:1px solid var(--border)}
.route-list b{width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--primary-soft);color:var(--primary-dark);flex:0 0 auto}
.route-mini{padding:25px;display:flex;flex-direction:column;justify-content:space-between;background:linear-gradient(145deg,#fff,#edf7fe)}
.route-mini p,.route-main p{color:var(--muted)}
.faq-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:65px}
.faq-list{display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:13px;overflow:hidden}
.faq-question{width:100%;border:0;background:#fff;padding:18px 20px;text-align:left;display:flex;justify-content:space-between;gap:15px;color:var(--text);font-weight:700}
.faq-question span:last-child{color:var(--primary);font-size:21px;line-height:1}
.faq-answer{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px}
.faq-item.open .faq-answer{display:block}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.contact-section{padding:0 0 94px}
.contact-box{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px;padding:35px;background:#eaf4fc;border:1px solid #cfe3f1;border-radius:24px}
.contact-box p{color:var(--muted)}
.contact-list{list-style:none;padding:0;margin:23px 0 0;display:grid;gap:10px;color:var(--muted);font-size:14px}
.contact-list li:before{content:"✓";color:var(--primary);font-weight:800;margin-right:9px}
.feedback-form{background:#fff;padding:24px;border-radius:17px;border:1px solid var(--border);display:grid;grid-template-columns:1fr 1fr;gap:15px}
.field{display:grid;gap:6px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;font-weight:700}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--border);border-radius:11px;padding:11px 13px;background:#fbfdff;color:var(--text)}
.field textarea{min-height:105px;resize:vertical}
.form-note{font-size:12px;color:var(--muted);grid-column:1 / -1}
.form-status{display:none;color:#27724f;background:#edf9f2;border-radius:9px;padding:8px 11px;font-size:13px;grid-column:1 / -1}
.site-footer{background:#fff;border-top:1px solid var(--border);padding:40px 0 24px}
.footer-main{display:flex;justify-content:space-between;gap:40px}
.footer-brand{max-width:480px}
.footer-brand p{color:var(--muted);font-size:13px;margin:15px 0 0}
.footer-links{display:flex;flex-wrap:wrap;gap:12px 22px;align-content:flex-start;color:var(--muted);font-size:13px}
.footer-links a:hover{color:var(--primary-dark)}
.copyright{border-top:1px solid var(--border);margin-top:28px;padding-top:18px;color:#8493a4;font-size:12px}
@media(max-width:1024px){
 .hero-grid{gap:35px}.topic-layout,.route-grid{grid-template-columns:1fr}
 .masonry{grid-template-columns:1fr 1fr}.masonry .topic-card:nth-child(n){grid-column:auto;grid-row:auto}
 .faq-layout{gap:35px}
}
@media(max-width:768px){
 .container{width:min(calc(100% - 32px),var(--container))}
 .nav{height:68px;gap:10px}.logo{font-size:14px}.logo-mark{width:31px;height:31px}
 .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:12px 16px;flex-direction:column;align-items:stretch;box-shadow:0 18px 30px rgba(38,78,113,.08)}
 .nav-links.open{display:flex}.nav-links a{min-height:44px}.language{margin-left:auto}.menu-btn{display:block}
 .hero{padding:50px 0}.hero-grid{grid-template-columns:1fr}.hero-board{min-height:0}
 h1{letter-spacing:-1px}.section{padding:65px 0}.section-head{display:block;margin-bottom:25px}
 .section-head .link-arrow{display:inline-block;margin-top:14px}
 .topic-card.large{grid-template-columns:1fr}.topic-card.large .cover{min-height:180px}
 .stat-grid{grid-template-columns:1fr 1fr}.stat{border-right:0;padding:12px 10px}
 .faq-layout,.contact-box{grid-template-columns:1fr}.footer-main{display:block}.footer-links{margin-top:25px}
}
@media(max-width:520px){
 .container{width:min(calc(100% - 24px),var(--container))}
 .nav{gap:7px}.logo span:last-child{max-width:155px;white-space:normal;line-height:1.25}
 .language span{padding:3px 7px}.menu-btn{font-size:12px;padding:7px 9px}
 .hero-actions,.hero-actions .btn{width:100%}.hero-actions .btn{min-height:48px}
 .feature-preview{grid-template-columns:105px 1fr;gap:13px}.cover{min-height:150px}
 .preview-copy h3{font-size:18px}.board-strip{display:block}.board-strip span{display:block;margin-top:5px}
 .masonry{grid-template-columns:1fr}.masonry .topic-card:nth-child(n){grid-column:auto}
 .feedback-form{grid-template-columns:1fr;padding:18px}.field.full{grid-column:auto}.form-note,.form-status{grid-column:auto}
 .contact-box{padding:22px}.copyright{line-height:1.7}
}