/* roulang page: index */
:root{
            --ink:#171717;--paper:#f1ece3;--paper2:#e8e0d5;--accent:#c94b3d;
            --plum:#4a303c;--olive:#62614c;--muted:#807a72;--line:rgba(23,23,23,.16);
            --white:#fffaf3;--radius:18px;--shadow:0 18px 50px rgba(23,23,23,.10);
        }
        *{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",sans-serif;line-height:1.7}
        a{text-decoration:none;color:inherit}button,input,select,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}
        .container{width:min(1180px,calc(100% - 40px));margin:auto}.serif{font-family:Georgia,"Songti SC","STSong",serif}.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:700;text-transform:uppercase}
        .site-header{position:sticky;top:0;z-index:20;background:rgba(241,236,227,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
        .nav-main{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand{display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.04em;font-size:17px}.brand-mark{width:33px;height:33px;background:var(--ink);color:var(--paper);display:grid;place-items:center;border-radius:50%;font-size:13px}
        .nav-links{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:700}.nav-links a{padding:8px 0;border-bottom:2px solid transparent;transition:.25s}.nav-links a:hover,.nav-links a.active{color:var(--accent);border-color:var(--accent)}
        .nav-tools{display:flex;align-items:center;gap:14px}.location{font-size:12px;border:1px solid var(--line);padding:7px 11px;border-radius:99px;color:var(--muted)}.location b{color:var(--accent)}.nav-cta,.btn-primary{background:var(--accent);color:#fffaf3;border:1px solid var(--accent);border-radius:99px;padding:11px 18px;font-weight:800;transition:.25s}.nav-cta:hover,.btn-primary:hover{background:var(--ink);border-color:var(--ink);transform:translateY(-2px)}
        .menu-btn{display:none;border:1px solid var(--line);background:transparent;border-radius:10px;padding:8px 12px;font-weight:800}
        .hero{padding:72px 0 38px;background:var(--ink);color:var(--paper);position:relative;overflow:hidden}.hero:after{content:"";position:absolute;inset:0;opacity:.08;pointer-events:none;background-image:radial-gradient(#fff 1px,transparent 1px);background-size:9px 9px}
        .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:end}.hero h1{font-size:clamp(48px,7vw,94px);line-height:1.03;letter-spacing:-.09em;margin:18px 0 25px;max-width:760px}.hero h1 em{font-style:normal;color:#e76a59}.hero-copy{max-width:590px;color:#d6cdc2;font-size:17px;line-height:1.9}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}.btn-ghost{border:1px solid rgba(255,250,243,.45);color:var(--paper);border-radius:99px;padding:10px 18px;font-weight:700;transition:.25s}.btn-ghost:hover{background:var(--paper);color:var(--ink)}
        .hero-poster{min-height:320px;background:linear-gradient(145deg,var(--accent),#7b3232 48%,var(--plum));padding:22px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:18px 18px 0 rgba(241,236,227,.12);transform:rotate(2deg)}.poster-no{font-size:12px;letter-spacing:.2em}.poster-title{font-size:43px;line-height:1.08;font-weight:900;letter-spacing:-.08em}.poster-foot{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.45);padding-top:12px;font-size:12px}
        .hero-index{margin-top:60px;border-top:1px solid rgba(255,255,255,.25);display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-top:18px;color:#d6cdc2;font-size:13px}.hero-index strong{display:block;color:var(--paper);font-size:22px;margin-top:3px}
        section{padding:105px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:40px}.section-head h2{font-size:clamp(32px,4vw,58px);line-height:1.1;letter-spacing:-.07em;margin:8px 0 0}.section-head p{max-width:420px;color:var(--muted);margin:0}.section-link{font-weight:800;color:var(--accent);white-space:nowrap}.section-link:hover{text-decoration:underline}
        .service-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:20px}.service-main,.service-side{border:1px solid var(--line);border-radius:var(--radius);padding:30px;position:relative;overflow:hidden}.service-main{min-height:330px;background:var(--plum);color:var(--paper)}.service-main:before{content:"01";position:absolute;right:24px;top:15px;font-size:100px;font-weight:900;color:rgba(255,255,255,.08)}.service-main h3{font-size:36px;margin:85px 0 10px;letter-spacing:-.06em}.service-main p,.service-side p{color:var(--muted);max-width:360px}.service-main p{color:#d7c9c4}.service-side{background:var(--white);display:flex;flex-direction:column;justify-content:space-between;min-height:155px}.service-side:nth-child(3){background:var(--paper2)}.service-side h3{font-size:23px;margin:0}.arrow{color:var(--accent);font-size:25px}
        .index-band{background:var(--ink);color:var(--paper);padding:70px 0}.metrics{display:grid;grid-template-columns:1fr 1fr 1fr;gap:0;border-top:1px solid rgba(255,255,255,.25);border-bottom:1px solid rgba(255,255,255,.25)}.metric{padding:28px 26px 28px 0;border-right:1px solid rgba(255,255,255,.25)}.metric:not(:first-child){padding-left:26px}.metric:last-child{border:0}.metric b{font-size:54px;line-height:1;font-weight:900;color:#e76a59}.metric span{display:block;color:#d6cdc2;margin-top:10px}
        .case-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;align-items:start}.feature-poster{min-height:450px;background:linear-gradient(160deg,#b96f55,#34302f 65%,#252324);color:#fffaf3;padding:28px;display:flex;flex-direction:column;justify-content:space-between;border-radius:var(--radius)}.feature-poster h3{font-size:52px;line-height:1.05;letter-spacing:-.08em;max-width:350px}.case-list{border-top:1px solid var(--line)}.case-item{display:grid;grid-template-columns:50px 1fr auto;gap:18px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line);transition:.25s}.case-item:hover{padding-left:10px;color:var(--accent)}.case-item small{color:var(--muted)}.case-item h3{margin:3px 0;font-size:21px}.tag{display:inline-block;border:1px solid currentColor;border-radius:99px;padding:3px 9px;font-size:11px;line-height:1.5;color:var(--accent);margin-right:5px}
        .paths{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.path{padding:28px;border:1px solid var(--line);background:var(--white);min-height:235px;display:flex;flex-direction:column;justify-content:space-between;border-radius:var(--radius);transition:.25s}.path:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.path.recommended{background:var(--accent);color:#fffaf3}.path h3{font-size:26px;margin:15px 0 8px}.path p{color:var(--muted);font-size:14px}.recommended p{color:#f5d9d3}.path a{font-weight:800;color:var(--accent)}.recommended a{color:#fffaf3}
        .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}.faq-list{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:20px 0}summary{cursor:pointer;list-style:none;font-size:18px;font-weight:800;display:flex;justify-content:space-between;gap:20px}summary::-webkit-details-marker{display:none}summary:after{content:"+";color:var(--accent);font-size:25px;line-height:1}details[open] summary:after{content:"−"}details p{color:var(--muted);max-width:680px;margin:14px 30px 0 0}
        .contact{background:var(--plum);color:var(--paper);padding:70px 0}.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px}.contact h2{font-size:clamp(35px,5vw,65px);line-height:1.05;letter-spacing:-.08em;margin:12px 0 18px}.contact p{color:#d7c9c4}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}.field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}.field label{font-size:13px;color:#d7c9c4}.field input,.field select,.field textarea{background:transparent;border:1px solid rgba(255,250,243,.35);color:var(--paper);padding:12px 13px;border-radius:10px;outline:none}.field select option{color:var(--ink)}.field input:focus,.field select:focus,.field textarea:focus{border-color:#f08a7c;box-shadow:0 0 0 3px rgba(240,138,124,.2)}.field textarea{min-height:105px;resize:vertical}.form-note{font-size:12px;color:#b9aaa4;margin-top:10px}.submit{margin-top:18px;background:var(--paper);color:var(--ink);border:0;border-radius:99px;padding:12px 24px;font-weight:900;transition:.25s}.submit:hover{background:#e76a59;color:#fff}
        footer{background:var(--ink);color:var(--paper);padding:48px 0 25px}.footer-top{display:flex;justify-content:space-between;gap:30px;align-items:start;padding-bottom:45px;border-bottom:1px solid rgba(255,255,255,.2)}.footer-brand{font-size:clamp(30px,5vw,65px);font-weight:900;letter-spacing:-.09em;line-height:1}.footer-links{display:flex;gap:24px;color:#d6cdc2;font-size:14px}.footer-links a:hover{color:#e76a59}.copyright{display:flex;justify-content:space-between;color:#9f968e;font-size:12px;padding-top:20px}
        :focus-visible{outline:3px solid #e76a59;outline-offset:3px}@media(max-width:900px){.hero-grid,.case-layout,.contact-grid,.faq-layout{grid-template-columns:1fr}.hero-poster{max-width:430px;margin:10px auto 0}.service-layout{grid-template-columns:1fr}.nav-links{gap:16px}.nav-tools .nav-cta{display:none}}
        @media(max-width:640px){.container{width:min(100% - 28px,1180px)}.nav-main{min-height:66px}.brand{font-size:14px}.brand-mark{width:28px;height:28px}.nav-links,.nav-tools .location{display:none}.menu-btn{display:block}.hero{padding-top:50px}.hero h1{font-size:clamp(45px,14vw,76px)}.hero-copy{font-size:15px}.hero-index{margin-top:42px;grid-template-columns:1fr;gap:10px}.hero-index strong{display:inline;margin-left:8px}.section-head{display:block}.section-head p{margin-top:18px}.section-link{display:inline-block;margin-top:18px}.metrics,.paths{grid-template-columns:1fr}.metric,.metric:not(:first-child){border-right:0;border-bottom:1px solid rgba(255,255,255,.25);padding:22px 0}.metric:last-child{border-bottom:0}.feature-poster{min-height:330px}.feature-poster h3{font-size:42px}.case-item{grid-template-columns:35px 1fr}.case-item .arrow{grid-column:2}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.footer-top,.copyright{display:block}.footer-links{flex-wrap:wrap;margin-top:25px}.copyright span{display:block;margin-top:7px}section{padding:75px 0}}
        @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{
      --ink:#171717;--paper:#f1ece3;--paper2:#e8e0d5;--accent:#c94b3d;
      --plum:#4a303c;--olive:#62614c;--muted:#807a72;
      --line:rgba(23,23,23,.16);--white:#fffaf3;--radius:18px;
      --shadow:0 18px 50px rgba(23,23,23,.10)
    }
    *{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",sans-serif;line-height:1.7}
    a{text-decoration:none;color:inherit}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .eyebrow{font-size:12px;letter-spacing:.18em;color:var(--accent);font-weight:800}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(241,236,227,.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
    .nav-main{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .brand{display:flex;align-items:center;gap:12px;font-weight:900;letter-spacing:-.04em;font-size:17px;line-height:1.15}
    .brand-mark{width:33px;height:33px;background:var(--ink);color:var(--paper);display:grid;place-items:center;border-radius:50%;font-size:13px}
    .nav-links{display:flex;align-items:center;gap:28px;font-size:14px;font-weight:700}
    .nav-links a{padding:8px 0;border-bottom:2px solid transparent;transition:.25s}
    .nav-links a:hover,.nav-links a.active{color:var(--accent);border-color:var(--accent)}
    .nav-tools{display:flex;align-items:center;gap:14px}
    .location{font-size:12px;color:var(--muted);white-space:nowrap}
    .location b{color:var(--ink)}
    .nav-cta,.btn-primary{background:var(--accent);color:var(--white);border:1px solid var(--accent);border-radius:99px;padding:11px 18px;font-weight:800;transition:.25s;display:inline-block}
    .nav-cta:hover,.btn-primary:hover{background:var(--ink);border-color:var(--ink);transform:translateY(-2px)}
    .menu-btn{display:none;border:1px solid var(--line);background:transparent;border-radius:10px;padding:8px 12px;font-weight:800}
    .hero{padding:58px 0 30px;background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
    .hero:after{content:"";position:absolute;inset:0;opacity:.07;pointer-events:none;background-image:radial-gradient(#fff 1px,transparent 1px);background-size:9px 9px}
    .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:end}
    .crumbs{font-size:13px;color:#b9afa6;margin-bottom:25px}
    .crumbs a:hover{color:var(--white)}
    .hero h1{font-size:clamp(44px,7vw,86px);line-height:1.04;letter-spacing:-.09em;margin:0 0 22px;max-width:780px}
    .hero h1 em{font-style:normal;color:#e76a59}
    .hero-copy{max-width:610px;color:#d6cdc2;font-size:17px;line-height:1.85}
    .hero-poster{min-height:280px;background:linear-gradient(145deg,var(--accent),#793434 48%,var(--plum));padding:24px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:18px 18px 0 rgba(241,236,227,.12);transform:rotate(2deg)}
    .poster-top{display:flex;justify-content:space-between;color:#f3d9cc;font-size:12px}
    .poster-title{font-size:42px;line-height:1.08;font-weight:900;letter-spacing:-.08em}
    .hero-index{margin-top:45px;border-top:1px solid rgba(255,255,255,.25);display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-top:16px;color:#d6cdc2;font-size:12px}
    .hero-index strong{display:block;color:var(--paper);font-size:20px;margin-top:3px}
    section{padding:92px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:34px}
    .section-head h2{font-size:clamp(31px,4vw,55px);line-height:1.1;letter-spacing:-.07em;margin:8px 0 0}
    .section-head p{max-width:430px;color:var(--muted);margin:0}
    .filter-wrap{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
    .filter-grid{display:grid;grid-template-columns:repeat(4,1fr) auto;gap:12px;align-items:end}
    .filter-label{display:block;color:var(--muted);font-size:12px;margin-bottom:6px;font-weight:700}
    .filter-control{width:100%;border:1px solid var(--line);background:var(--paper);border-radius:10px;padding:11px 12px;outline:none}
    .filter-control:hover,.filter-control:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(201,75,61,.12)}
    .clear-btn{border:1px solid var(--line);border-radius:99px;padding:10px 16px;background:transparent;font-weight:800;transition:.2s}
    .clear-btn:hover{background:var(--ink);color:var(--paper)}
    .featured{display:grid;grid-template-columns:.9fr 1.1fr;gap:34px;align-items:stretch}
    .feature-poster{min-height:410px;background:linear-gradient(160deg,#b96f55,#34302f 65%,#252324);color:var(--white);padding:28px;border-radius:var(--radius);display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
    .feature-poster:before{content:"精选入口";position:absolute;right:-22px;top:48px;transform:rotate(90deg);letter-spacing:.2em;color:rgba(255,255,255,.5);font-size:12px}
    .feature-poster h3{font-size:clamp(36px,5vw,64px);line-height:1.04;letter-spacing:-.08em;max-width:400px;margin:0}
    .feature-info{border-top:1px solid rgba(255,255,255,.3);padding-top:16px;color:#e4d8d0;font-size:13px}
    .feature-copy{padding:18px 0 0}
    .feature-copy h3{font-size:34px;line-height:1.2;letter-spacing:-.06em;margin:12px 0}
    .feature-copy p{color:var(--muted);max-width:480px}
    .tag{display:inline-block;border:1px solid currentColor;border-radius:99px;padding:3px 9px;font-size:11px;line-height:1.5;color:var(--accent);margin:0 5px 6px 0}
    .content-list{border-top:1px solid var(--line);margin-top:18px}
    .content-item{display:grid;grid-template-columns:52px 145px 1fr auto;gap:20px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:.25s}
    .content-item:hover{padding-left:10px;background:rgba(255,250,243,.45)}
    .item-no{font-size:22px;font-weight:900;color:var(--accent)}
    .thumb{height:95px;border-radius:10px;position:relative;overflow:hidden;background:linear-gradient(135deg,#75624e,#b74335 60%,#3b2933)}
    .thumb.two{background:linear-gradient(135deg,#62614c,#b47b55 60%,#403537)}
    .thumb.three{background:linear-gradient(135deg,#4a303c,#8a4a45 60%,#d08362)}
    .thumb:after{content:"播放";position:absolute;right:9px;bottom:8px;border:1px solid rgba(255,255,255,.65);border-radius:99px;color:#fff;padding:1px 7px;font-size:11px}
    .item-title{font-size:21px;font-weight:900;letter-spacing:-.04em;margin:2px 0}
    .item-meta{color:var(--muted);font-size:13px}
    .item-link{color:var(--accent);font-weight:800;white-space:nowrap}
    .item-link:hover{text-decoration:underline}
    .browse-bar{margin-top:30px;padding:22px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}
    .pages{display:flex;gap:8px}
    .page{width:38px;height:38px;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;font-weight:800;transition:.2s}
    .page:hover,.page.current{background:var(--ink);color:var(--paper);border-color:var(--ink)}
    .faq-area{background:var(--paper2)}
    .faq-layout{display:grid;grid-template-columns:.7fr 1.3fr;gap:70px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;justify-content:space-between;gap:20px;padding:20px 0;background:none;border:0;text-align:left;font-weight:800;font-size:17px}
    .faq-question span:last-child{font-size:25px;color:var(--accent);transition:.25s}
    .faq-answer{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .35s ease}
    .faq-answer p{margin:0 38px 20px 0}
    .faq-item.open .faq-answer{max-height:150px}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .contact{background:var(--plum);color:var(--paper)}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:65px}
    .contact h2{font-size:clamp(34px,5vw,64px);line-height:1.06;letter-spacing:-.08em;margin:12px 0 18px}
    .contact p{color:#d6c9c3}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .field label{display:block;color:#e8dcd5;font-size:13px;margin-bottom:6px}
    .field input,.field select,.field textarea{width:100%;background:transparent;border:1px solid rgba(255,250,243,.35);color:var(--paper);padding:12px 13px;border-radius:10px;outline:none}
    .field select option{color:var(--ink)}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:#f08a7c;box-shadow:0 0 0 3px rgba(240,138,124,.2)}
    .field textarea{min-height:108px;resize:vertical}
    .full{grid-column:1/-1}
    .form-note{font-size:12px;color:#b9aaa4;margin-top:10px}
    footer{background:var(--ink);color:var(--paper);padding:48px 0 25px}
    .footer-top{display:flex;justify-content:space-between;gap:30px;align-items:start;padding-bottom:45px;border-bottom:1px solid rgba(255,255,255,.2)}
    .footer-brand{font-size:clamp(30px,5vw,65px);font-weight:900;letter-spacing:-.09em;line-height:1}
    .footer-links{display:flex;gap:24px;color:#d6cdc2;font-size:14px}
    .footer-links a:hover{color:#e76a59}
    .copyright{display:flex;justify-content:space-between;color:#9f968e;font-size:12px;padding-top:20px}
    .mobile-panel{display:none}
    @media(max-width:900px){
      .nav-links{gap:16px}.location{display:none}
      .hero-grid,.featured,.contact-grid,.faq-layout{grid-template-columns:1fr}
      .hero-poster{max-width:430px;margin:10px auto 0}
      .filter-grid{grid-template-columns:repeat(2,1fr)}
      .filter-grid .clear-btn{width:max-content}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .nav-main{min-height:68px}.nav-links{display:none}.nav-tools .nav-cta{display:none}.menu-btn{display:block}
      .mobile-panel{padding:18px 14px 25px;background:var(--ink);color:var(--paper)}
      .mobile-panel a{display:block;padding:13px 0;border-bottom:1px solid rgba(255,255,255,.18);font-weight:800}
      .mobile-panel.show{display:block}
      .hero{padding:43px 0 25px}.hero h1{font-size:clamp(42px,14vw,68px)}
      .hero-poster{min-height:245px}.poster-title{font-size:35px}.hero-index{gap:10px}
      section{padding:65px 0}.section-head{display:block}.section-head p{margin-top:16px}
      .filter-grid{grid-template-columns:1fr}.filter-wrap{padding:15px}
      .content-item{grid-template-columns:35px 1fr;gap:12px;padding:18px 0}
      .content-item .thumb{grid-column:2;height:150px}
      .content-item .item-main{grid-column:2}.content-item .item-link{grid-column:2}
      .browse-bar{display:block}.pages{margin-top:15px}
      .form-grid{grid-template-columns:1fr}.full{grid-column:auto}
      .footer-top{display:block}.footer-links{flex-wrap:wrap;margin-top:28px;gap:14px 22px}
      .copyright{display:block}.copyright span{display:block;margin-top:8px}
    }
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
    :focus-visible{outline:3px solid #e76a59;outline-offset:3px}