/* roulang page: index */
:root{
      --ink:#282132;
      --muted:#746b7f;
      --paper:#fbf9fc;
      --card:#ffffff;
      --line:#e9e1ed;
      --purple:#7651a8;
      --purple-dark:#503276;
      --berry:#a94d75;
      --lavender:#eee6f7;
      --gold:#e7ad65;
      --shadow:0 18px 48px rgba(74,48,96,.10);
      --soft-shadow:0 8px 24px rgba(74,48,96,.08);
      --radius-xl:30px;
      --radius-lg:22px;
    }
    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      color:var(--ink);background:var(--paper);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      line-height:1.75;font-size:16px;padding-bottom:92px;
    }
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    img{display:block;max-width:100%;object-fit:cover}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .section{padding:92px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--purple);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--berry);border-radius:4px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:34px}
    .section-head h2{font-size:clamp(28px,4vw,42px);line-height:1.2;letter-spacing:-.04em}
    .section-head p{max-width:520px;color:var(--muted);font-size:15px}
    .topline{background:#fff;border-bottom:1px solid var(--line)}
    .brand-row{height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:13px;background:linear-gradient(135deg,var(--purple),var(--berry));color:#fff;box-shadow:0 8px 18px rgba(118,81,168,.25)}
    .tool-area{display:flex;align-items:center;gap:10px}
    .search-box{display:flex;align-items:center;gap:9px;background:#f7f3f9;border:1px solid var(--line);padding:9px 14px;border-radius:13px;color:var(--muted)}
    .search-box input{width:145px;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink)}
    .quiet-link{color:var(--muted);font-size:14px;padding:9px 12px;border-radius:11px;transition:.2s}
    .quiet-link:hover{background:var(--lavender);color:var(--purple-dark)}
    .nav-shell{border-top:1px solid #f2edf4;background:#fff}
    .nav-grid{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
    .nav-grid::-webkit-scrollbar{display:none}
    .nav-item{min-width:106px;display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;border:1px solid transparent;border-radius:14px;color:var(--muted);font-size:14px;transition:.22s}
    .nav-item svg{width:19px;height:19px;transition:.22s}
    .nav-item:hover,.nav-item:focus-visible{color:var(--purple-dark);border-color:#d9c8e8;background:#fbf8fd;transform:translateY(-2px);outline:none}
    .nav-item:hover svg{transform:scale(1.1) rotate(-4deg)}
    .nav-item.active{color:#fff;background:linear-gradient(110deg,var(--purple),var(--berry));box-shadow:0 8px 18px rgba(118,81,168,.2)}
    .hero{padding:70px 0 62px;position:relative;overflow:hidden}
    .hero:before,.hero:after{content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none}
    .hero:before{width:380px;height:380px;right:-120px;top:-120px;background:rgba(196,155,225,.23)}
    .hero:after{width:250px;height:250px;left:-120px;bottom:-100px;background:rgba(224,161,180,.16)}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.08fr .92fr;gap:54px;align-items:center}
    .hero h1{font-size:clamp(38px,6vw,68px);line-height:1.12;letter-spacing:-.065em;margin:20px 0 22px;max-width:650px}
    .hero h1 span{color:var(--purple)}
    .hero-copy{max-width:600px;color:var(--muted);font-size:17px}
    .actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 20px;border-radius:14px;font-weight:700;font-size:15px;transition:.2s;border:1px solid transparent}
    .btn-primary{color:#fff;background:linear-gradient(110deg,var(--purple),var(--berry));box-shadow:0 10px 20px rgba(118,81,168,.2)}
    .btn-primary:hover{transform:translateY(-3px);filter:saturate(1.08);box-shadow:0 14px 26px rgba(118,81,168,.27)}
    .btn-secondary{color:var(--purple-dark);background:#fff;border-color:#d9c8e8}
    .btn-secondary:hover{background:var(--lavender);transform:translateY(-2px)}
    .btn:focus-visible,.tag:focus-visible,summary:focus-visible{outline:3px solid rgba(231,173,101,.65);outline-offset:3px}
    .hero-notes{display:flex;flex-wrap:wrap;gap:9px;margin-top:25px}
    .badge,.tag{display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:12px;font-weight:700}
    .badge{padding:6px 10px;background:#f3ecf8;color:var(--purple-dark)}
    .badge.gold{background:#fff4e4;color:#996725}
    .preview{background:#30263c;border-radius:32px;padding:17px;box-shadow:var(--shadow);transform:rotate(1.5deg)}
    .preview-inner{min-height:410px;border-radius:24px;padding:26px;background:linear-gradient(145deg,#654689 0%,#392a4a 62%,#2e263a 100%);color:#fff;position:relative;overflow:hidden}
    .preview-inner:after{content:"";position:absolute;width:210px;height:210px;border-radius:50%;right:-55px;top:30px;background:rgba(223,166,193,.24)}
    .preview-top{display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1}
    .preview-label{font-size:12px;color:#eadff2}
    .status-dot{width:9px;height:9px;border-radius:50%;background:#e9b76e;box-shadow:0 0 0 5px rgba(233,183,110,.16)}
    .preview-title{position:relative;z-index:1;margin-top:68px;font-size:34px;line-height:1.25;letter-spacing:-.05em;max-width:280px}
    .preview-line{position:relative;z-index:1;height:1px;background:rgba(255,255,255,.23);margin:27px 0 18px}
    .preview-bottom{display:flex;justify-content:space-between;position:relative;z-index:1;color:#e7dceb;font-size:13px}
    .signal{position:absolute;right:24px;bottom:25px;z-index:1;width:96px;height:96px;border:1px solid rgba(255,255,255,.32);border-radius:50%;display:grid;place-items:center;font-size:13px;text-align:center}
    .signal:before{content:"";position:absolute;inset:10px;border:1px dashed rgba(255,255,255,.4);border-radius:50%}
    .rail{display:grid;grid-template-columns:1fr 1.45fr 1fr;gap:15px}
    .rail-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--soft-shadow);transition:.22s}
    .rail-card:nth-child(2){background:#f0e8f7;border-color:#d9c8e8;transform:translateY(-12px)}
    .rail-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
    .rail-card:nth-child(2):hover{transform:translateY(-16px)}
    .num{font-size:12px;color:var(--berry);font-weight:800}
    .rail-card h3{font-size:20px;margin:12px 0 6px}
    .rail-card p{font-size:14px;color:var(--muted)}
    .split{display:grid;grid-template-columns:1.35fr .65fr;gap:22px}
    .feature-card,.mini-card,.index-panel{border:1px solid var(--line);border-radius:var(--radius-xl);background:#fff;box-shadow:var(--soft-shadow)}
    .feature-card{padding:30px;min-height:310px;background:linear-gradient(135deg,#fff 0%,#f5eef9 100%);position:relative;overflow:hidden}
    .feature-card:before{content:"";position:absolute;width:270px;height:270px;border-radius:50%;right:-80px;bottom:-115px;background:#e2cfea}
    .feature-card h3{font-size:28px;line-height:1.3;max-width:480px;margin:22px 0 12px;position:relative}
    .feature-card p{color:var(--muted);max-width:510px;position:relative}
    .feature-footer{display:flex;justify-content:space-between;align-items:center;position:absolute;bottom:26px;left:30px;right:30px}
    .mini-stack{display:grid;gap:22px}
    .mini-card{padding:24px;min-height:144px}
    .mini-card h3{font-size:19px;margin:9px 0 4px}
    .mini-card p{font-size:14px;color:var(--muted)}
    .mini-icon{width:36px;height:36px;display:grid;place-items:center;border-radius:12px;color:var(--purple);background:var(--lavender)}
    .updates{background:#30263c;color:#fff;border-radius:var(--radius-xl);padding:34px}
    .updates .section-head{margin-bottom:23px}
    .updates .section-head p{color:#c9bbd2}
    .update-list{display:grid;gap:3px}
    .update-row{display:grid;grid-template-columns:92px 1fr auto;gap:18px;align-items:center;padding:17px 0;border-top:1px solid rgba(255,255,255,.13)}
    .update-row time{color:#cbbbd4;font-size:13px}
    .update-row strong{font-size:16px}
    .update-row span{font-size:12px;color:#edc17e;background:rgba(231,173,101,.13);padding:4px 9px;border-radius:999px}
    .topic-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:18px}
    .topic{padding:26px;border-radius:22px;background:#fff;border:1px solid var(--line);min-height:190px;transition:.2s}
    .topic:nth-child(2){background:#f5edf8;margin-top:26px}
    .topic:nth-child(3){background:#fff8ee}
    .topic:hover{transform:translateY(-5px);box-shadow:var(--soft-shadow)}
    .topic h3{font-size:21px;margin:24px 0 7px}
    .topic p{color:var(--muted);font-size:14px}
    .metrics{display:grid;grid-template-columns:1fr 1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:22px;overflow:hidden}
    .metric{background:#fff;padding:26px}
    .metric b{font-size:32px;color:var(--purple-dark);display:block;line-height:1.2}
    .metric span{font-size:14px;color:var(--muted)}
    .quote-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:stretch}
    .quote-lead{padding:32px;border-radius:26px;background:linear-gradient(145deg,var(--purple-dark),#784d82);color:#fff}
    .quote-lead h2{font-size:34px;line-height:1.25;margin:18px 0 14px}
    .quote-lead p{color:#e9dff0}
    .quote-list{display:grid;gap:14px}
    .quote{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px 23px}
    .quote p{font-size:15px}
    .quote small{display:block;color:var(--muted);margin-top:8px}
    .faq{max-width:850px;margin:0 auto;display:grid;gap:11px}
    details{background:#fff;border:1px solid var(--line);border-radius:16px;padding:0 21px;transition:.2s}
    details[open]{border-color:#cbb4df;box-shadow:var(--soft-shadow)}
    summary{list-style:none;cursor:pointer;font-weight:700;padding:19px 0;display:flex;justify-content:space-between;gap:15px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";color:var(--purple);font-size:20px}
    details[open] summary:after{content:"－"}
    details p{color:var(--muted);font-size:14px;padding:0 32px 20px 0}
    .bottom-cta{padding:54px 0}
    .cta-box{border-radius:28px;padding:36px 42px;background:linear-gradient(110deg,#efe5f6,#fff2ea);border:1px solid #e1d0e8;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta-box h2{font-size:clamp(25px,3vw,36px);line-height:1.25;margin:10px 0}
    .cta-box p{color:var(--muted);font-size:15px}
    footer{background:#27202f;color:#e9dfed;padding:52px 0 110px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
    footer .brand{color:#fff;margin-bottom:14px}
    footer p,footer a{color:#bdb0c4;font-size:14px}
    footer a{display:block;margin:7px 0;transition:.2s}
    footer a:hover{color:#fff;transform:translateX(2px)}
    .footer-title{color:#fff;font-weight:700;margin-bottom:12px}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;color:#97899e;font-size:12px}
    .fixed-cta{position:fixed;z-index:20;left:50%;bottom:18px;transform:translateX(-50%);width:min(780px,calc(100% - 30px));display:flex;align-items:center;justify-content:space-between;gap:20px;padding:12px 14px 12px 20px;background:rgba(48,38,60,.93);backdrop-filter:blur(14px);border:1px solid rgba(255,255,255,.16);border-radius:18px;color:#fff;box-shadow:0 16px 35px rgba(35,24,45,.25)}
    .fixed-cta small{color:#d6c9dc}
    .fixed-cta .btn{padding:10px 16px;font-size:14px;white-space:nowrap}
    @media(max-width:900px){
      .hero-grid,.split,.quote-layout{grid-template-columns:1fr}
      .hero{padding-top:52px}
      .preview{max-width:620px;margin:0 auto}
      .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
      .footer-grid>div:last-child{display:none}
    }
    @media(max-width:650px){
      body{font-size:15px;padding-bottom:120px}
      .container{width:min(100% - 28px,560px)}
      .section{padding:62px 0}
      .brand-row{height:72px}
      .brand{font-size:16px}
      .brand-mark{width:32px;height:32px;border-radius:10px}
      .tool-area .quiet-link{display:none}
      .search-box input{width:90px}
      .nav-item{min-width:102px}
      .hero h1{font-size:40px}
      .hero-copy{font-size:16px}
      .preview-inner{min-height:350px}
      .rail{grid-template-columns:1fr;gap:12px}
      .rail-card:nth-child(2){transform:none}
      .rail-card:nth-child(2):hover{transform:translateY(-5px)}
      .section-head{display:block;margin-bottom:25px}
      .section-head p{margin-top:12px}
      .feature-card{min-height:350px;padding:24px}
      .feature-footer{left:24px;right:24px;bottom:23px}
      .topic-grid{grid-template-columns:1fr}
      .topic:nth-child(2){margin-top:0}
      .metrics{grid-template-columns:1fr}
      .metric{padding:20px}
      .update-row{grid-template-columns:70px 1fr;gap:10px}
      .update-row span{grid-column:2;width:max-content}
      .cta-box{display:block;padding:28px 24px}
      .cta-box .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .fixed-cta{bottom:10px;padding:10px 10px 10px 14px}
      .fixed-cta small{font-size:12px;line-height:1.35}
    }

/* roulang page: category1 */
:root{
 --ink:#282132;--muted:#746b7f;--paper:#fbf9fc;--card:#fff;--line:#e9e1ed;
 --purple:#7651a8;--purple-dark:#503276;--berry:#a94d75;--lavender:#eee6f7;
 --gold:#e7ad65;--shadow:0 18px 48px rgba(74,48,96,.10);
 --soft-shadow:0 8px 24px rgba(74,48,96,.08);--radius-xl:30px;--radius-lg:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:var(--paper);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;line-height:1.75;font-size:16px;padding-bottom:32px}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer;border:0}
img{display:block;max-width:100%;object-fit:cover}
.container{width:min(1180px,calc(100% - 40px));margin:0 auto}
.topline{background:rgba(251,249,252,.94);position:relative;z-index:5}
.brand-row{height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:-.04em;white-space:nowrap}
.brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:13px;background:linear-gradient(135deg,var(--purple),var(--berry));color:#fff;box-shadow:0 8px 18px rgba(118,81,168,.25)}
.tool-area{display:flex;align-items:center;gap:16px}
.search-box{display:flex;align-items:center;gap:9px;background:#f7f3f9;border:1px solid var(--line);padding:9px 14px;border-radius:13px;color:var(--muted)}
.search-box input{width:145px;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink)}
.quiet-link{font-size:14px;color:var(--muted);transition:.2s}
.quiet-link:hover{color:var(--purple)}
.nav-shell{border-top:1px solid #f2edf4;background:#fff}
.nav-grid{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
.nav-grid::-webkit-scrollbar{display:none}
.nav-item{min-width:106px;display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;border:1px solid transparent;border-radius:14px;color:var(--muted);font-size:14px;transition:.22s}
.nav-item svg{width:19px;height:19px;transition:.22s}
.nav-item:hover,.nav-item:focus-visible{color:var(--purple-dark);border-color:#d9c8e8;background:#fbf8fd;transform:translateY(-2px);outline:none}
.nav-item:hover svg{transform:scale(1.1) rotate(-4deg)}
.nav-item.active{color:#fff;background:linear-gradient(110deg,var(--purple),var(--berry));box-shadow:0 8px 18px rgba(118,81,168,.2)}
.section{padding:82px 0}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--purple);font-size:13px;font-weight:700;letter-spacing:.08em}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--berry);border-radius:4px}
.page-intro{padding:72px 0 56px;position:relative;overflow:hidden}
.page-intro:after{content:"";position:absolute;width:360px;height:360px;border-radius:50%;right:-120px;top:-160px;background:rgba(218,188,229,.28);pointer-events:none}
.intro-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:46px;align-items:end}
.page-intro h1{font-size:clamp(38px,6vw,64px);line-height:1.14;letter-spacing:-.065em;margin:20px 0 18px;max-width:690px}
.page-intro h1 span{color:var(--purple)}
.intro-copy{color:var(--muted);font-size:17px;max-width:650px}
.index-panel{padding:26px;border:1px solid #d9c8e8;border-radius:var(--radius-xl);background:linear-gradient(135deg,#fff,#f1e8f8);box-shadow:var(--soft-shadow)}
.panel-top{display:flex;justify-content:space-between;align-items:center;gap:15px;margin-bottom:24px}
.panel-label{font-size:13px;color:var(--purple-dark);font-weight:800}
.badge,.tag{display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:12px;font-weight:700}
.badge{padding:6px 10px;background:#f3ecf8;color:var(--purple-dark)}
.badge.gold{background:#fff4e4;color:#996725}
.tag{padding:7px 12px;background:#fff;border:1px solid var(--line);color:var(--muted);transition:.2s}
.tag:hover,.tag.active{color:var(--purple-dark);border-color:#c9b1df;background:#f7f0fb}
.topic-cloud{display:flex;flex-wrap:wrap;gap:10px}
.panel-foot{display:flex;justify-content:space-between;align-items:center;margin-top:28px;padding-top:18px;border-top:1px solid rgba(118,81,168,.14);font-size:13px;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 20px;border-radius:14px;font-weight:700;font-size:15px;transition:.2s;border:1px solid transparent}
.btn-primary{color:#fff;background:linear-gradient(110deg,var(--purple),var(--berry));box-shadow:0 10px 20px rgba(118,81,168,.2)}
.btn-primary:hover{transform:translateY(-3px);filter:saturate(1.08);box-shadow:0 14px 26px rgba(118,81,168,.27)}
.btn-secondary{color:var(--purple-dark);background:#fff;border-color:#d9c8e8}
.btn-secondary:hover{background:var(--lavender);transform:translateY(-2px)}
.btn:focus-visible,.tag:focus-visible,summary:focus-visible{outline:3px solid rgba(231,173,101,.65);outline-offset:3px}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:32px}
.section-head h2{font-size:clamp(28px,4vw,42px);line-height:1.2;letter-spacing:-.04em;margin:10px 0 0}
.section-head p{max-width:500px;color:var(--muted);font-size:15px;margin:0}
.filter-bar{display:flex;gap:9px;overflow-x:auto;padding-bottom:6px;scrollbar-width:none;margin-bottom:25px}
.filter-bar::-webkit-scrollbar{display:none}
.topic-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:20px}
.feature-card,.mini-card{border:1px solid var(--line);border-radius:var(--radius-xl);background:#fff;box-shadow:var(--soft-shadow);transition:.22s}
.feature-card{padding:32px;min-height:330px;background:linear-gradient(135deg,#fff 0%,#f5eef9 100%);position:relative;overflow:hidden}
.feature-card:before{content:"";position:absolute;width:270px;height:270px;border-radius:50%;right:-80px;bottom:-115px;background:#e2cfea}
.feature-card>*{position:relative}
.feature-card h3{font-size:30px;line-height:1.3;max-width:520px;margin:22px 0 12px}
.feature-card p{color:var(--muted);max-width:510px}
.feature-footer{display:flex;justify-content:space-between;align-items:center;position:absolute;bottom:28px;left:32px;right:32px}
.mini-stack{display:grid;gap:20px}
.mini-card{padding:24px;min-height:155px}
.mini-card:hover,.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.mini-card h3{font-size:20px;margin:10px 0 5px}
.mini-card p{font-size:14px;color:var(--muted);margin:0}
.entry-list{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.entry{display:grid;grid-template-columns:52px 1fr auto;gap:15px;align-items:center;padding:19px 20px;background:#fff;border:1px solid var(--line);border-radius:18px;transition:.2s}
.entry:hover{border-color:#cdb6df;transform:translateX(3px);box-shadow:var(--soft-shadow)}
.entry-no{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;background:var(--lavender);color:var(--purple-dark);font-weight:800}
.entry h3{font-size:17px;margin:0 0 3px}
.entry p{font-size:13px;color:var(--muted);margin:0}
.entry-arrow{color:var(--purple);font-size:20px}
.timeline-wrap{background:#30263a;border-radius:var(--radius-xl);padding:34px;color:#fff;box-shadow:var(--shadow)}
.timeline-wrap .eyebrow{color:#e3cfee}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:0;margin-top:28px}
.timeline-item{position:relative;padding:0 24px 0 0}
.timeline-item:not(:last-child):after{content:"";position:absolute;left:13px;right:20px;top:14px;height:1px;background:rgba(255,255,255,.25)}
.timeline-dot{position:relative;z-index:1;width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:var(--berry);font-size:12px;font-weight:800;margin-bottom:18px}
.timeline-item h3{font-size:18px;margin:0 0 7px}
.timeline-item p{color:#cfc3d6;font-size:14px;margin:0;max-width:240px}
.faq-list{display:grid;gap:11px;max-width:850px}
details{background:#fff;border:1px solid var(--line);border-radius:17px;padding:0 20px;transition:.2s}
details[open]{border-color:#ceb8df;box-shadow:var(--soft-shadow)}
summary{list-style:none;cursor:pointer;padding:19px 0;font-weight:700;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary:after{content:"＋";color:var(--purple);font-size:20px;line-height:1}
details[open] summary:after{content:"－"}
details p{color:var(--muted);font-size:14px;margin:-4px 0 19px;max-width:760px}
.cta-panel{display:flex;justify-content:space-between;align-items:center;gap:28px;padding:34px 38px;border-radius:var(--radius-xl);background:linear-gradient(115deg,#f0e5f7,#fff4ed);border:1px solid #e3d1e9}
.cta-panel h2{font-size:clamp(24px,4vw,36px);line-height:1.25;margin:8px 0}
.cta-panel p{color:var(--muted);margin:0}
footer{background:#30263a;color:#fff;padding:54px 0 25px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:38px}
footer .brand{color:#fff;margin-bottom:15px}
footer .brand-mark{box-shadow:none}
footer p,footer a{color:#cfc3d6;font-size:14px}
footer a{display:block;margin:8px 0;transition:.2s}
footer a:hover{color:#fff;transform:translateX(2px)}
.footer-title{font-weight:800;color:#fff;margin-bottom:12px}
.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:20px;color:#aa9bb1;font-size:12px}
@media(max-width:900px){
 .intro-grid,.topic-layout{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr 1fr}
 .intro-grid{gap:30px}
}
@media(max-width:640px){
 body{font-size:15px}
 .container{width:min(100% - 28px,1180px)}
 .brand-row{height:72px}
 .brand{font-size:16px;gap:8px}
 .brand-mark{width:34px;height:34px;border-radius:11px}
 .tool-area{gap:8px}
 .search-box{padding:8px}
 .search-box input{width:92px}
 .quiet-link{display:none}
 .nav-grid{padding:10px 0}
 .nav-item{min-width:96px;padding:9px 10px}
 .page-intro{padding:52px 0 38px}
 .page-intro h1{font-size:39px}
 .section{padding:60px 0}
 .section-head{display:block;margin-bottom:24px}
 .section-head p{margin-top:13px}
 .feature-card{min-height:350px;padding:25px}
 .feature-footer{left:25px;right:25px;bottom:23px;align-items:flex-end}
 .entry-list{grid-template-columns:1fr}
 .timeline-wrap{padding:26px 22px}
 .timeline{display:block}
 .timeline-item{padding:0 0 25px 45px}
 .timeline-item:not(:last-child):after{left:13px;top:28px;bottom:0;width:1px;height:auto;right:auto}
 .timeline-dot{position:absolute;left:0;top:0}
 .cta-panel{display:block;padding:28px 24px}
 .cta-panel .btn{margin-top:20px;width:100%}
 .footer-grid{grid-template-columns:1fr 1fr;gap:26px 18px}
 .footer-grid>div:first-child,.footer-grid>div:last-child{grid-column:1/-1}
}

/* roulang page: category2 */
:root{
      --ink:#282132;
      --muted:#746b7f;
      --paper:#fbf9fc;
      --card:#fff;
      --line:#e9e1ed;
      --purple:#7651a8;
      --purple-dark:#503276;
      --berry:#a94d75;
      --lavender:#eee6f7;
      --gold:#e7ad65;
      --shadow:0 18px 48px rgba(74,48,96,.10);
      --soft-shadow:0 8px 24px rgba(74,48,96,.08);
      --radius-xl:30px;
      --radius-lg:22px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;color:var(--ink);background:var(--paper);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
      line-height:1.75;font-size:16px;padding-bottom:86px;
    }
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer;border:0}
    img{display:block;max-width:100%;object-fit:cover}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topline{background:rgba(251,249,252,.94);position:relative;z-index:5}
    .brand-row{height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:12px;font-size:20px;font-weight:800;letter-spacing:-.04em;white-space:nowrap}
    .brand-mark{width:38px;height:38px;display:grid;place-items:center;border-radius:13px;background:linear-gradient(135deg,var(--purple),var(--berry));color:#fff;box-shadow:0 8px 18px rgba(118,81,168,.25)}
    .tool-area{display:flex;align-items:center;gap:10px}
    .search-box{display:flex;align-items:center;gap:9px;background:#f7f3f9;border:1px solid var(--line);padding:9px 14px;border-radius:13px;color:var(--muted)}
    .search-box input{width:145px;border:0;outline:0;background:transparent;font-size:14px;color:var(--ink)}
    .quiet-link{color:var(--muted);font-size:14px;padding:8px 10px;border-radius:10px;transition:.2s}
    .quiet-link:hover,.quiet-link:focus-visible{color:var(--purple-dark);background:var(--lavender);outline:none}
    .nav-shell{border-top:1px solid #f2edf4;background:#fff}
    .nav-grid{display:flex;gap:10px;overflow-x:auto;padding:12px 0;scrollbar-width:none}
    .nav-grid::-webkit-scrollbar{display:none}
    .nav-item{min-width:106px;display:flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;border:1px solid transparent;border-radius:14px;color:var(--muted);font-size:14px;transition:.22s}
    .nav-item svg{width:19px;height:19px;transition:.22s}
    .nav-item:hover,.nav-item:focus-visible{color:var(--purple-dark);border-color:#d9c8e8;background:#fbf8fd;transform:translateY(-2px);outline:none}
    .nav-item:hover svg{transform:scale(1.1) rotate(-4deg)}
    .nav-item.active{color:#fff;background:linear-gradient(110deg,var(--purple),var(--berry));box-shadow:0 8px 18px rgba(118,81,168,.2)}
    .page-intro{padding:76px 0 48px;position:relative;overflow:hidden}
    .page-intro:before{content:"";position:absolute;width:360px;height:360px;right:-100px;top:-150px;border-radius:50%;background:rgba(196,155,225,.2)}
    .intro-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:end}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--purple);font-size:13px;font-weight:700;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--berry);border-radius:4px}
    h1{font-size:clamp(38px,6vw,64px);line-height:1.14;letter-spacing:-.065em;margin:18px 0}
    h1 span{color:var(--purple)}
    .intro-copy{max-width:650px;color:var(--muted);font-size:17px}
    .index-panel{padding:26px;border:1px solid #dacbe6;border-radius:var(--radius-xl);background:linear-gradient(140deg,#fff,#f1e8f7);box-shadow:var(--soft-shadow)}
    .panel-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:25px}
    .panel-title{font-size:18px;font-weight:800}
    .badge,.tag{display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:12px;font-weight:700}
    .badge{padding:6px 10px;background:#f3ecf8;color:var(--purple-dark)}
    .badge.gold{background:#fff4e4;color:#996725}
    .index-number{font-size:58px;font-weight:800;line-height:1;color:var(--purple-dark);letter-spacing:-.08em}
    .index-panel p{color:var(--muted);margin:10px 0 0;font-size:14px}
    .section{padding:76px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:28px;margin-bottom:30px}
    .section-head h2{font-size:clamp(28px,4vw,42px);line-height:1.2;letter-spacing:-.04em;margin:8px 0 0}
    .section-head p{max-width:520px;color:var(--muted);font-size:15px;margin:0}
    .filter-rail{display:flex;gap:10px;overflow-x:auto;padding-bottom:12px;scrollbar-width:none}
    .filter-rail::-webkit-scrollbar{display:none}
    .tag{padding:8px 14px;background:#fff;border:1px solid var(--line);color:var(--muted);transition:.2s;white-space:nowrap}
    .tag:hover,.tag:focus-visible,.tag.active{color:var(--purple-dark);border-color:#cdb5df;background:var(--lavender);outline:none}
    .update-layout{display:grid;grid-template-columns:1.22fr .78fr;gap:24px;align-items:start}
    .timeline{padding:30px;background:#30243a;border-radius:var(--radius-xl);color:#fff;box-shadow:var(--shadow)}
    .timeline-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:25px}
    .timeline h3{font-size:25px;margin:0}
    .timeline-item{display:grid;grid-template-columns:96px 1fr;gap:18px;padding:23px 0;border-top:1px solid rgba(255,255,255,.13)}
    .timeline-item:first-of-type{border-top:0}
    .timeline time{color:#d8c7df;font-size:13px;padding-top:3px}
    .timeline-item strong{display:block;font-size:18px;margin-bottom:5px}
    .timeline-item p{color:#cbbbd4;font-size:14px;margin:0}
    .state{display:inline-flex;margin-top:10px;padding:4px 9px;border-radius:999px;background:rgba(231,173,101,.14);color:#efc47d;font-size:12px}
    .side-stack{display:grid;gap:18px}
    .feature-card,.mini-card{border:1px solid var(--line);border-radius:var(--radius-xl);background:#fff;box-shadow:var(--soft-shadow);transition:.22s}
    .feature-card{padding:28px;min-height:270px;background:linear-gradient(135deg,#fff,#f5eef9);position:relative;overflow:hidden}
    .feature-card:before{content:"";position:absolute;width:210px;height:210px;right:-70px;bottom:-80px;border-radius:50%;background:#e2cfea}
    .feature-card h3{font-size:27px;line-height:1.3;max-width:390px;margin:18px 0 10px;position:relative}
    .feature-card p{position:relative;color:var(--muted);font-size:14px;max-width:390px}
    .feature-card:hover,.mini-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .mini-card{padding:23px;min-height:156px}
    .mini-card h3{font-size:19px;margin:9px 0 5px}
    .mini-card p{font-size:14px;color:var(--muted);margin:0}
    .mini-link{display:inline-flex;align-items:center;gap:8px;color:var(--purple-dark);font-weight:700;font-size:14px;margin-top:18px}
    .mini-link:hover{color:var(--berry)}
    .index-wall{display:grid;grid-template-columns:1fr 1fr 1.3fr;gap:18px}
    .wall-card{padding:25px;border-radius:24px;background:#fff;border:1px solid var(--line);min-height:190px;box-shadow:var(--soft-shadow)}
    .wall-card:nth-child(2){background:#f0e8f7;transform:translateY(22px)}
    .wall-card:nth-child(3){background:#fff4e4}
    .wall-card h3{font-size:21px;margin:15px 0 7px}
    .wall-card p{font-size:14px;color:var(--muted);margin:0}
    .wall-number{font-size:13px;font-weight:800;color:var(--berry)}
    .faq-list{display:grid;gap:12px;max-width:850px}
    details{background:#fff;border:1px solid var(--line);border-radius:17px;padding:0 21px;box-shadow:0 5px 16px rgba(74,48,96,.04)}
    summary{cursor:pointer;list-style:none;padding:19px 0;font-weight:700;display:flex;justify-content:space-between;gap:18px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"＋";color:var(--purple);font-size:20px;line-height:1}
    details[open] summary:after{content:"－"}
    details p{color:var(--muted);font-size:14px;margin:0 0 19px}
    .cta-box{padding:38px 42px;border-radius:var(--radius-xl);background:linear-gradient(110deg,var(--purple-dark),var(--berry));color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px;box-shadow:var(--shadow)}
    .cta-box h2{font-size:30px;line-height:1.3;margin:0 0 8px}
    .cta-box p{color:#eaddeb;margin:0;font-size:14px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:13px 20px;border-radius:14px;font-weight:700;font-size:15px;transition:.2s;border:1px solid transparent}
    .btn-primary{color:#fff;background:linear-gradient(110deg,var(--purple),var(--berry));box-shadow:0 10px 20px rgba(118,81,168,.2)}
    .btn-primary:hover{transform:translateY(-3px);filter:saturate(1.08);box-shadow:0 14px 26px rgba(118,81,168,.27)}
    .btn-light{background:#fff;color:var(--purple-dark)}
    .btn-light:hover{background:#f6edf8;transform:translateY(-2px)}
    .btn:focus-visible{outline:3px solid rgba(231,173,101,.7);outline-offset:3px}
    .floating-cta{position:fixed;z-index:10;bottom:18px;left:50%;transform:translateX(-50%);width:min(760px,calc(100% - 32px));padding:11px 14px 11px 20px;border:1px solid #dbcce4;border-radius:18px;background:rgba(255,255,255,.91);backdrop-filter:blur(12px);box-shadow:0 12px 35px rgba(53,35,68,.16);display:flex;align-items:center;justify-content:space-between;gap:15px}
    .floating-cta small{color:var(--muted)}
    footer{background:#30243a;color:#fff;padding:60px 0 30px}
    .footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:35px}
    footer .brand{margin-bottom:15px}
    footer p,footer a{color:#cbbbd4;font-size:14px}
    footer a{display:block;margin:7px 0;transition:.2s}
    footer a:hover{color:#fff;transform:translateX(2px)}
    .footer-title{font-weight:800;color:#fff;margin-bottom:12px}
    .copyright{border-top:1px solid rgba(255,255,255,.13);margin-top:38px;padding-top:20px;color:#a998b2;font-size:12px}
    @media(max-width:900px){
      .intro-grid,.update-layout{grid-template-columns:1fr}
      .intro-grid{gap:28px}
      .index-wall{grid-template-columns:1fr 1fr}
      .wall-card:nth-child(2){transform:none}
      .wall-card:nth-child(3){grid-column:span 2}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:560px){
      body{font-size:15px;padding-bottom:100px}
      .container{width:min(100% - 28px,1180px)}
      .brand-row{height:auto;min-height:72px;align-items:flex-start;padding:17px 0;flex-direction:column;gap:13px}
      .brand{font-size:17px}
      .brand-mark{width:34px;height:34px}
      .tool-area{width:100%;justify-content:space-between}
      .search-box{flex:1}
      .search-box input{width:100%}
      .page-intro{padding:54px 0 34px}
      h1{font-size:39px}
      .section{padding:58px 0}
      .section-head{display:block}
      .section-head p{margin-top:13px}
      .timeline{padding:23px 20px}
      .timeline-item{grid-template-columns:1fr;gap:3px}
      .index-wall{grid-template-columns:1fr}
      .wall-card:nth-child(3){grid-column:auto}
      .cta-box{display:block;padding:30px 25px}
      .cta-box .btn{margin-top:22px;width:100%}
      .floating-cta{padding:10px 10px 10px 14px}
      .floating-cta small{font-size:11px}
      .floating-cta .btn{padding:11px 13px;font-size:13px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      footer{padding:45px 0 26px}
    }