/* roulang page: index */
:root{
      --paper:#f8f6f1;
      --surface:#fffdf9;
      --ink:#27232b;
      --muted:#716b73;
      --line:#e8e0d9;
      --coral:#d85e58;
      --coral-dark:#b74645;
      --berry:#814b68;
      --sage:#dce8df;
      --cream:#f2e2c8;
      --shadow:0 18px 48px rgba(58,42,45,.09);
      --soft-shadow:0 8px 24px rgba(58,42,45,.07);
      --radius:22px;
      --max:1200px;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;line-height:1.75;font-size:16px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{max-width:var(--max);margin:0 auto;padding:0 24px}
    .site-header{position:relative;z-index:10;padding:22px 0 0}
    .dock{display:flex;align-items:center;gap:8px;max-width:1100px;margin:auto;padding:9px 12px;background:rgba(255,253,249,.94);border:1px solid var(--line);border-radius:999px;box-shadow:var(--soft-shadow);backdrop-filter:blur(12px)}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.04em;padding:9px 15px;white-space:nowrap}
    .brand-mark{width:28px;height:28px;border-radius:9px;background:var(--coral);position:relative}
    .brand-mark:after{content:"";position:absolute;width:9px;height:9px;border:2px solid white;border-radius:50%;top:7px;left:9px}
    .nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
    .nav-links a,.nav-cta{padding:9px 14px;border-radius:999px;color:var(--muted);font-size:14px;transition:.2s ease}
    .nav-links a:hover{color:var(--ink);background:#f2ece7}
    .nav-links a.active{color:var(--coral-dark);background:#fae5df;font-weight:700}
    .nav-cta{background:var(--ink);color:#fff!important;margin-left:4px}
    .nav-cta:hover{background:var(--coral);transform:translateY(-2px)}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:.08em}
    .eyebrow{color:var(--coral-dark);text-transform:uppercase}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
    .hero{padding:62px 0 90px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;background:var(--cream);right:-120px;top:30px;opacity:.46}
    .hero-inner{position:relative;z-index:1}
    .hero h1{font-size:clamp(44px,7vw,86px);line-height:1.08;letter-spacing:-.075em;max-width:850px;margin:18px 0 24px;font-weight:900}
    .hero h1 span{color:var(--coral)}
    .hero-copy{font-size:18px;color:var(--muted);max-width:670px;margin:0 0 30px}
    .button-row{display:flex;gap:12px;flex-wrap:wrap}
    .button{border:0;border-radius:12px;padding:13px 21px;font-weight:700;transition:.22s ease;display:inline-flex;align-items:center;gap:10px}
    .button.primary{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(216,94,88,.22)}
    .button.primary:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(216,94,88,.28)}
    .button.secondary{background:var(--surface);border:1px solid var(--line);color:var(--ink)}
    .button.secondary:hover{border-color:var(--coral);color:var(--coral-dark);transform:translateY(-2px)}
    .button:focus-visible,a:focus-visible,input:focus-visible{outline:3px solid rgba(216,94,88,.38);outline-offset:3px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px}
    .meta-pill{padding:8px 13px;border:1px solid var(--line);border-radius:999px;background:rgba(255,253,249,.72);color:var(--muted);font-size:13px}
    .section{padding:88px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}
    .section h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.055em;line-height:1.2;margin:8px 0 0;font-weight:850}
    .section-intro{color:var(--muted);max-width:520px;margin:0}
    .feature-layout{display:grid;grid-template-columns:1.35fr .8fr;gap:18px}
    .feature-card,.info-card,.scene-card,.example-card,.rule-card,.form-panel,.news-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--soft-shadow)}
    .feature-card{padding:34px;min-height:260px;position:relative;overflow:hidden}
    .feature-card.large{background:var(--ink);color:#fff}
    .feature-card.large p{color:#c8c2c4}
    .feature-card.large:after{content:"01";position:absolute;right:28px;bottom:-22px;font-size:150px;line-height:1;color:rgba(255,255,255,.07);font-weight:900}
    .feature-stack{display:grid;gap:18px}
    .feature-card h3,.scene-card h3,.example-card h3,.rule-card h3{font-size:22px;letter-spacing:-.035em;margin:12px 0 8px}
    .feature-card p,.scene-card p,.example-card p,.rule-card p{color:var(--muted);margin:0;font-size:14px}
    .large p{max-width:460px}
    .tag{padding:5px 10px;background:#f4ebe5;color:var(--berry);letter-spacing:0}
    .tag.sage{background:var(--sage);color:#496254}
    .tag.coral{background:#fae1dc;color:var(--coral-dark)}
    .metric-band{background:var(--berry);color:#fff;padding:30px 0}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
    .metric{padding:8px 20px;border-left:1px solid rgba(255,255,255,.2)}
    .metric:first-child{border-left:0}
    .metric strong{display:block;font-size:31px;letter-spacing:-.06em}
    .metric span{font-size:13px;color:#dfd1d8}
    .scenes{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .scene-card{padding:25px;min-height:205px}
    .scene-number{font-size:13px;color:var(--coral);font-weight:800}
    .scene-card .button{margin-top:20px;padding:9px 13px;font-size:13px}
    .examples{display:grid;grid-template-columns:1.15fr .85fr .85fr;gap:16px}
    .example-card{padding:25px;min-height:190px}
    .example-card.primary-example{background:#f0e2d4}
    .example-index{font-size:42px;line-height:1;font-weight:900;color:rgba(39,35,43,.17);margin-bottom:20px}
    .lead-section{background:#eee8e1}
    .lead-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:50px;align-items:start}
    .lead-copy p{color:var(--muted);max-width:430px}
    .form-panel{padding:30px}
    label{display:block;font-size:13px;font-weight:700;margin-bottom:7px}
    input{width:100%;border:1px solid var(--line);border-radius:11px;background:#fff;padding:12px 14px;margin-bottom:16px;color:var(--ink)}
    input::placeholder{color:#aaa2a3}
    .form-note{font-size:12px;color:var(--muted);margin:14px 0 0}
    .news-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}
    .news-panel{padding:26px}
    .news-list{list-style:none;margin:0;padding:0}
    .news-list li{border-bottom:1px solid var(--line);padding:16px 0;display:flex;justify-content:space-between;gap:20px}
    .news-list li:last-child{border-bottom:0}
    .news-list a{font-weight:700}
    .news-list a:hover{color:var(--coral-dark)}
    .news-list small{color:var(--muted);white-space:nowrap}
    .side-note{background:var(--sage);border:0}
    .side-note p{color:#53665a;font-size:14px}
    .rules{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .rule-card{padding:24px}
    .faq-wrap{max-width:850px}
    .accordion{background:transparent;margin:0}
    .accordion-title{border:1px solid var(--line)!important;border-radius:12px!important;margin-bottom:8px;background:var(--surface);font-weight:700;color:var(--ink)}
    .accordion-title:hover{background:#fff4ef;color:var(--coral-dark)}
    .accordion-content{border:0!important;background:transparent;color:var(--muted);padding:8px 20px 20px;font-size:14px}
    .cta{padding:70px 0}
    .cta-box{background:var(--coral);color:#fff;border-radius:28px;padding:48px;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta-box h2{margin:0 0 9px;font-size:clamp(28px,4vw,44px);letter-spacing:-.05em}
    .cta-box p{margin:0;color:#ffe8e4}
    .cta-box .button.secondary{background:#fff;border-color:#fff}
    footer{background:var(--ink);color:#fff;padding:48px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:35px}
    footer .brand{padding:0;margin-bottom:14px}
    footer .brand-mark{background:var(--coral)}
    footer p,footer a{color:#bcb5b8;font-size:14px}
    footer a:hover{color:#fff}
    .footer-links{display:flex;flex-direction:column;gap:7px}
    .footer-title{font-size:13px;color:#fff;font-weight:700;margin-bottom:10px}
    .copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;color:#918a8d;font-size:12px}
    .reveal{animation:rise .65s ease both}
    @keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
    @media(max-width:900px){
      .dock{border-radius:20px;flex-wrap:wrap}.nav-links{order:3;width:100%;overflow-x:auto;justify-content:flex-start}.nav-cta{margin-left:auto}
      .feature-layout,.lead-grid,.news-layout{grid-template-columns:1fr}.examples{grid-template-columns:1fr 1fr}.example-card.primary-example{grid-column:span 2}
      .metrics{grid-template-columns:repeat(2,1fr)}.metric:nth-child(3){border-left:0}.scenes,.rules{grid-template-columns:1fr 1fr}
    }
    @media(max-width:600px){
      .container{padding:0 17px}.site-header{padding-top:12px}.dock{padding:8px}.brand{font-size:14px;padding:8px 9px}.nav-links a{padding:8px 10px;font-size:13px}.nav-cta{font-size:13px;padding:8px 11px}
      .hero{padding:48px 0 66px}.hero h1{font-size:48px}.hero-copy{font-size:16px}.section{padding:62px 0}.section-head{display:block}.section-intro{margin-top:15px}
      .feature-card{padding:25px}.scenes,.rules,.examples{grid-template-columns:1fr}.example-card.primary-example{grid-column:auto}.metrics{gap:0}.metric{padding:10px 12px}.metric strong{font-size:25px}
      .form-panel{padding:22px}.cta{padding:50px 0}.cta-box{display:block;padding:30px 24px}.cta-box .button-row{margin-top:24px}.footer-grid{grid-template-columns:1fr;gap:24px}
    }
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}

/* roulang page: category1 */
:root{
      --paper:#f8f6f1;
      --surface:#fffdf9;
      --ink:#27232b;
      --muted:#716b73;
      --line:#e8e0d9;
      --coral:#d85e58;
      --coral-dark:#b74645;
      --berry:#814b68;
      --sage:#dce8df;
      --cream:#f2e2c8;
      --lavender:#e8e0ed;
      --shadow:0 18px 48px rgba(58,42,45,.09);
      --soft-shadow:0 8px 24px rgba(58,42,45,.07);
      --radius:22px;
      --max:1200px;
    }
    html{scroll-behavior:smooth}
    *,*:before,*:after{box-sizing:border-box}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;line-height:1.75;font-size:16px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select{font:inherit}
    button{cursor:pointer}
    .container{max-width:var(--max);margin:0 auto;padding:0 24px}
    .site-header{position:relative;z-index:10;padding:22px 0 0}
    .dock{display:flex;align-items:center;gap:12px;background:rgba(255,253,249,.94);border:1px solid var(--line);border-radius:18px;box-shadow:var(--soft-shadow);padding-top:4px;padding-bottom:4px}
    .brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.04em;padding:9px 15px;white-space:nowrap}
    .brand-mark{width:28px;height:28px;border-radius:9px;background:var(--coral);position:relative;flex:none}
    .brand-mark:after{content:"";position:absolute;width:9px;height:9px;border:2px solid white;border-radius:50%;top:7px;left:9px}
    .nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
    .nav-links a,.nav-cta{padding:9px 14px;border-radius:999px;color:var(--muted);font-size:14px;transition:.2s ease}
    .nav-links a:hover{color:var(--ink);background:#f2ece7}
    .nav-links a.active{color:var(--coral-dark);background:#fae5df;font-weight:700}
    .nav-cta{background:var(--ink);color:#fff!important;margin-left:4px}
    .nav-cta:hover{background:var(--coral);transform:translateY(-2px)}
    .eyebrow,.tag,.status{display:inline-flex;align-items:center;gap:7px;border-radius:999px;font-size:12px;font-weight:700}
    .eyebrow{color:var(--coral-dark);letter-spacing:.08em}
    .eyebrow:before{content:"";width:7px;height:7px;border-radius:50%;background:var(--coral)}
    .hero{padding:65px 0 58px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;width:390px;height:390px;border-radius:50%;background:var(--cream);right:-130px;top:5px;opacity:.5}
    .hero:after{content:"";position:absolute;width:110px;height:110px;border:1px solid #ddc9c0;border-radius:28px;right:20%;bottom:18px;transform:rotate(18deg);opacity:.65}
    .hero-inner{position:relative;z-index:1}
    .hero h1{font-size:clamp(42px,7vw,78px);line-height:1.08;letter-spacing:-.075em;max-width:860px;margin:18px 0 20px;font-weight:900}
    .hero h1 span{color:var(--coral)}
    .hero-copy{font-size:18px;color:var(--muted);max-width:690px;margin:0 0 28px}
    .crumbs{font-size:13px;color:var(--muted);margin-bottom:20px}
    .crumbs a:hover{color:var(--coral-dark)}
    .button-row{display:flex;gap:12px;flex-wrap:wrap}
    .button{border:0;border-radius:12px;padding:12px 20px;font-weight:700;transition:.22s ease;display:inline-flex;align-items:center;gap:10px}
    .button.primary{background:var(--coral);color:#fff;box-shadow:0 8px 18px rgba(216,94,88,.22)}
    .button.primary:hover{background:var(--coral-dark);transform:translateY(-2px);box-shadow:0 12px 24px rgba(216,94,88,.28)}
    .button.secondary{background:var(--surface);border:1px solid var(--line);color:var(--ink)}
    .button.secondary:hover{border-color:var(--coral);color:var(--coral-dark);transform:translateY(-2px)}
    .button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid rgba(216,94,88,.38);outline-offset:3px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}
    .meta-pill{padding:8px 13px;border:1px solid var(--line);border-radius:999px;background:rgba(255,253,249,.72);color:var(--muted);font-size:13px}
    .section{padding:78px 0}
    .section.alt{background:#eee8e1}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:28px}
    .section h2{font-size:clamp(30px,4vw,48px);letter-spacing:-.055em;line-height:1.2;margin:8px 0 0;font-weight:850}
    .section-intro{color:var(--muted);max-width:530px;margin:0}
    .filter-panel{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:var(--soft-shadow);margin-bottom:30px}
    .filter-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
    .search-box{display:flex;flex:1 1 360px;gap:9px}
    input,select{width:100%;border:1px solid var(--line);border-radius:11px;background:#fff;padding:11px 14px;color:var(--ink);margin:0}
    input::placeholder{color:#aaa2a3}
    select{max-width:180px}
    .filter-tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:15px}
    .tag{padding:6px 11px;background:#f4ebe5;color:var(--berry);letter-spacing:0;border:1px solid transparent;transition:.2s}
    .tag:hover,.tag.selected{background:#fae1dc;color:var(--coral-dark);border-color:#edbdb4}
    .tag.sage{background:var(--sage);color:#496254}
    .tag.lavender{background:var(--lavender);color:#674f70}
    .results-note{font-size:13px;color:var(--muted);margin:0 0 15px}
    .content-grid{display:grid;grid-template-columns:1.28fr .86fr .86fr;gap:18px}
    .content-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--soft-shadow);transition:.24s ease;display:flex;flex-direction:column}
    .content-card:hover{transform:translateY(-5px);border-color:#d9aaa0;box-shadow:var(--shadow)}
    .content-card.featured{grid-row:span 2}
    .cover{height:145px;background:var(--lavender);position:relative;overflow:hidden;padding:20px;display:flex;align-items:flex-end}
    .featured .cover{height:235px;background:var(--ink)}
    .cover:before{content:"";position:absolute;width:180px;height:180px;border:1px solid rgba(255,255,255,.35);border-radius:50%;right:-42px;top:-35px}
    .cover:after{content:"";position:absolute;width:85px;height:85px;border-radius:22px;background:rgba(216,94,88,.82);right:38px;bottom:-22px;transform:rotate(18deg)}
    .cover-number{position:relative;z-index:1;color:rgba(255,255,255,.9);font-size:42px;font-weight:900;letter-spacing:-.08em}
    .card-body{padding:22px;display:flex;flex:1;flex-direction:column}
    .card-body h3{font-size:21px;letter-spacing:-.04em;margin:12px 0 7px;line-height:1.35}
    .card-body p{font-size:14px;color:var(--muted);margin:0 0 17px}
    .card-meta{display:flex;justify-content:space-between;gap:10px;color:var(--muted);font-size:12px;border-top:1px solid var(--line);padding-top:13px;margin-top:auto}
    .status{padding:4px 9px;background:#f1eee9;color:#625c60}
    .status.new{background:var(--sage);color:#496254}
    .card-link{margin-top:16px;color:var(--coral-dark);font-size:14px;font-weight:800}
    .card-link span{display:inline-block;transition:.2s}
    .card-link:hover span{transform:translateX(4px)}
    .browse-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:44px;align-items:start}
    .browse-copy p{color:var(--muted);max-width:440px}
    .steps{border-left:1px solid #d9cbc4;padding-left:26px}
    .step{position:relative;padding:0 0 28px 20px}
    .step:last-child{padding-bottom:0}
    .step:before{content:"";position:absolute;left:-33px;top:7px;width:13px;height:13px;background:var(--coral);border:4px solid var(--paper);border-radius:50%;box-shadow:0 0 0 1px #d9aaa0}
    .step strong{display:block;font-size:19px;margin-bottom:5px}
    .step p{font-size:14px;color:var(--muted);margin:0}
    .info-layout{display:grid;grid-template-columns:1fr .8fr;gap:18px}
    .info-card{padding:29px}
    .info-card.highlight{background:#f0e2d4}
    .info-card h3{font-size:22px;margin:0 0 10px}
    .info-card p{color:var(--muted);margin:0}
    .mini-list{list-style:none;margin:16px 0 0;padding:0}
    .mini-list li{padding:11px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:14px;font-size:14px}
    .mini-list li:last-child{border-bottom:0}
    .mini-list span{color:var(--muted);font-size:12px;white-space:nowrap}
    .faq-wrap{max-width:850px}
    .accordion-title{border:1px solid var(--line)!important;border-radius:12px!important;margin-bottom:8px;background:var(--surface);font-weight:700;color:var(--ink)}
    .accordion-title:hover{background:#fff4ef;color:var(--coral-dark)}
    .accordion-content{border:1px solid var(--line);border-top:0;background:#fffdf9;color:var(--muted);font-size:14px;border-radius:0 0 12px 12px;margin-top:-8px;margin-bottom:8px;padding:18px}
    .cta{padding:70px 0}
    .cta-box{background:var(--coral);color:#fff;border-radius:28px;padding:45px 48px;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta-box h2{margin:0 0 9px;font-size:clamp(28px,4vw,44px);letter-spacing:-.05em}
    .cta-box p{margin:0;color:#ffe8e4}
    .cta-box .button.secondary{background:#fff;border-color:#fff}
    footer{background:var(--ink);color:#fff;padding:48px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding-bottom:35px}
    footer .brand{padding:0;margin-bottom:14px}
    footer .brand-mark{background:var(--coral)}
    footer p,footer a{color:#bcb5b8;font-size:14px}
    footer a:hover{color:#fff}
    .footer-title{font-weight:800;margin-bottom:12px;color:#fff}
    .footer-links{display:grid;gap:7px}
    .copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:21px;color:#8e878a;font-size:12px}
    .reveal{animation:rise .65s ease both}
    @keyframes rise{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:none}}
    @media(max-width:1023px){
      .content-grid{grid-template-columns:1fr 1fr}
      .content-card.featured{grid-row:auto;grid-column:span 2}
      .featured .cover{height:190px}
    }
    @media(max-width:639px){
      .container{padding:0 17px}
      .site-header{padding-top:12px}
      .dock{overflow-x:auto;justify-content:flex-start;gap:2px;padding-left:8px;padding-right:8px}
      .brand{font-size:14px;padding-left:7px;padding-right:10px}
      .brand-mark{width:24px;height:24px;border-radius:7px}
      .brand-mark:after{width:8px;height:8px;top:6px;left:8px}
      .nav-links{margin-left:0}
      .nav-links a,.nav-cta{font-size:12px;padding:8px 10px}
      .nav-cta{display:none}
      .hero{padding:45px 0 45px}
      .hero h1{font-size:43px}
      .hero-copy{font-size:16px}
      .section{padding:55px 0}
      .section-head{display:block;margin-bottom:22px}
      .section-intro{margin-top:12px}
      .filter-row{display:block}
      .search-box{display:flex;margin-bottom:10px}
      .search-box .button{padding-left:14px;padding-right:14px}
      select{max-width:none}
      .content-grid{grid-template-columns:1fr}
      .content-card.featured{grid-column:auto}
      .featured .cover{height:165px}
      .browse-layout,.info-layout{grid-template-columns:1fr;gap:25px}
      .cta-box{display:block;padding:31px 25px}
      .cta-box .button-row{margin-top:23px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .copyright{line-height:1.7}
    }
    @media(prefers-reduced-motion:reduce){
      *,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}
    }