/* roulang page: index */
:root{--ink:#171717;--ink2:#22201e;--paper:#f3f0e9;--warm:#fffdf8;--muted:#77736b;--line:#d9d3c8;--orange:#e76032;--lime:#c9df62;--shadow:0 18px 50px rgba(22,20,17,.09);--radius:10px}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.75}a{text-decoration:none;color:inherit}img{display:block;max-width:100%}button,input,select,textarea{font:inherit}button{cursor:pointer;border:0}.wrap{width:min(1240px,calc(100% - 40px));margin:auto}.topbar{height:76px;background:rgba(23,23,23,.97);color:#f7f3ea;border-bottom:1px solid #3b3935;position:sticky;top:0;z-index:30}.nav{height:76px;display:flex;align-items:center;gap:28px}.brand{display:flex;align-items:center;gap:11px;font-weight:900;font-size:22px;letter-spacing:-1px;white-space:nowrap}.brand-mark{width:30px;height:30px;background:var(--orange);display:grid;place-items:center;color:#171717;font-weight:900;clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%)}.channels{display:flex;gap:22px;align-items:center;flex:1;margin-left:20px}.channels a{font-size:14px;color:#bdb9b0;position:relative;padding:25px 0}.channels a:hover,.channels a.active{color:#fff}.channels a.active:after{content:"";position:absolute;height:2px;background:var(--orange);left:0;right:0;bottom:17px}.search{border:1px solid #514e48;border-radius:5px;padding:8px 12px;color:#aca79e;background:#272622;width:150px;outline:none}.search:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.2)}.nav-btn,.primary{background:var(--orange);color:#fff;padding:11px 17px;border-radius:5px;font-weight:750;transition:.25s}.nav-btn:hover,.primary:hover{transform:translateY(-2px);filter:brightness(1.1)}.secondary{border:1px solid #716b62;padding:10px 17px;border-radius:5px;color:var(--ink);font-weight:700;transition:.25s}.secondary:hover{background:var(--ink);color:#fff}.menu{display:none;color:white;background:transparent;font-size:25px}.eyebrow,.tag{font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--orange);font-weight:800}.hero{padding:58px 0 76px;background:var(--ink);color:#f8f5ed;position:relative;overflow:hidden}.hero:before{content:"";position:absolute;inset:0;opacity:.16;background-image:linear-gradient(#aaa 1px,transparent 1px),linear-gradient(90deg,#aaa 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(90deg,#000,transparent 82%)}.hero-grid{position:relative;display:grid;grid-template-columns:1.24fr .76fr;gap:18px;min-height:510px}.hero-main{padding:48px;background:linear-gradient(120deg,rgba(30,29,27,.96),rgba(30,29,27,.62)),url('/assets/images/backpic/back-1.webp') center/cover;border:1px solid #4b4842;display:flex;flex-direction:column;justify-content:flex-end;clip-path:polygon(0 0,96% 0,100% 7%,100% 100%,0 100%)}h1{font-size:clamp(42px,5.8vw,76px);line-height:1.08;letter-spacing:-.06em;margin:16px 0 22px;max-width:760px}.hero-copy{color:#d2cec5;max-width:650px;font-size:17px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-side{display:grid;grid-template-rows:1fr 1fr;gap:18px}.mini{padding:27px;background:#292825;border:1px solid #48453f;position:relative}.mini h3{font-size:25px;line-height:1.25;margin:10px 0}.mini p{color:#aaa59a;font-size:14px;margin:0}.mini strong{font-size:40px;color:var(--lime);display:block;line-height:1}.hero-strip{grid-column:1/-1;background:var(--orange);color:#171717;padding:15px 22px;display:flex;justify-content:space-between;align-items:center;font-weight:800}.section{padding:92px 0}.dark{background:var(--ink);color:#f8f5ed}.section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:38px}.section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.15;letter-spacing:-.045em;margin:9px 0 0}.section-head p{max-width:500px;color:var(--muted);margin:0}.dark .section-head p{color:#aaa59a}.split{display:grid;grid-template-columns:5fr 7fr;gap:24px}.feature-panel{padding:34px;background:var(--warm);border:1px solid var(--line);box-shadow:var(--shadow)}.feature-panel h3{font-size:29px;line-height:1.25;margin:12px 0}.feature-panel p{color:#666158}.service-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}.service{padding:25px;background:#e8e3d9;border:1px solid #d2cabe;min-height:178px;transition:.28s}.service:nth-child(2){margin-top:28px;background:var(--ink);color:#fff}.service:nth-child(3){margin-top:-12px}.service:hover{transform:translateY(-4px);border-color:var(--orange)}.service h3{margin:10px 0 7px;font-size:20px}.service p{font-size:14px;color:var(--muted);margin:0}.service:nth-child(2) p{color:#bbb6ad}.arrow{display:inline-block;color:var(--orange);font-weight:800;margin-top:13px}.metrics{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #4a4741;border-bottom:1px solid #4a4741}.metric{padding:30px 22px;border-right:1px solid #4a4741}.metric:last-child{border:0}.metric b{display:block;font-size:43px;line-height:1;color:var(--lime);margin-bottom:12px}.metric span{color:#bdb8ae;font-size:14px}.bento{display:grid;grid-template-columns:1.3fr .7fr .7fr;grid-template-rows:220px 190px;gap:16px}.case{position:relative;overflow:hidden;border:1px solid #d0c9bd;background:#282725;color:#fff}.case:first-child{grid-row:span 2}.case img{width:100%;height:100%;object-fit:cover;opacity:.64;transition:.45s}.case:hover img{transform:scale(1.04);opacity:.8}.case-content{position:absolute;left:22px;right:22px;bottom:20px}.case h3{font-size:24px;line-height:1.2;margin:8px 0}.case p{font-size:13px;color:#ded9d0;margin:0}.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}.step{padding:27px 22px;border-right:1px solid var(--line);min-height:210px}.step:last-child{border:0}.num{font-size:36px;color:var(--orange);font-weight:900;line-height:1}.step h3{font-size:19px;margin:20px 0 8px}.step p{font-size:14px;color:var(--muted);margin:0}.rank-wrap{display:grid;grid-template-columns:1fr 1fr;gap:26px}.rank-list{background:#292825;border:1px solid #46433d}.rank-item{display:grid;grid-template-columns:45px 1fr auto;gap:15px;padding:18px 22px;border-bottom:1px solid #46433d;align-items:center}.rank-item:last-child{border:0}.rank-item em{font-style:normal;color:var(--lime);font-size:22px;font-weight:900}.rank-item p{margin:0;color:#eee;font-weight:700}.rank-item small{display:block;color:#99948a;font-size:12px}.rank-score{color:var(--orange);font-weight:800}.news{display:grid;grid-template-columns:1.35fr .65fr;gap:25px}.news-list{border-top:1px solid var(--line)}.news-row{display:grid;grid-template-columns:110px 1fr 90px;gap:18px;padding:21px 0;border-bottom:1px solid var(--line);align-items:start}.news-row time,.news-row small{color:var(--muted);font-size:12px}.news-row h3{font-size:18px;margin:0 0 4px}.news-row p{margin:0;color:#706b62;font-size:14px}.recommend{padding:30px;background:var(--ink);color:#fff;min-height:100%;background-image:linear-gradient(135deg,rgba(23,23,23,.93),rgba(23,23,23,.55)),url('/assets/images/coverpic/cover-8.webp');background-size:cover}.recommend h3{font-size:28px;line-height:1.25;margin:12px 0}.recommend p{color:#c4beb4;font-size:14px}.tags{display:flex;gap:9px;flex-wrap:wrap}.tag-chip{border:1px solid #746e64;color:#c6c0b6;padding:5px 10px;border-radius:3px;font-size:12px}.voices{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.voice{padding:24px;background:#292825;border:1px solid #45423c}.stars{color:var(--lime);letter-spacing:2px}.voice p{color:#d2cdc3;font-size:14px;margin:14px 0 0}.voice strong{display:block;margin-top:17px;color:#fff}.partners{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}.partner{background:var(--warm);padding:23px}.partner h3{font-size:18px;margin:0 0 6px}.partner p{font-size:13px;color:var(--muted);margin:0}.faq{max-width:930px}.faq-item{border-top:1px solid #4b4842}.faq-item:last-child{border-bottom:1px solid #4b4842}.faq-q{width:100%;padding:21px 0;background:transparent;color:#fff;text-align:left;display:flex;justify-content:space-between;font-weight:750;font-size:17px}.faq-q span{color:var(--orange);font-size:24px}.faq-a{display:none;color:#bdb8ae;font-size:14px;padding:0 50px 22px 0}.faq-item.open .faq-a{display:block}.faq-item.open .faq-q span{transform:rotate(45deg)}.contact{display:grid;grid-template-columns:.82fr 1.18fr;gap:50px;align-items:start}.contact h2{font-size:clamp(34px,4vw,55px);line-height:1.12;margin:10px 0 18px}.contact p{color:var(--muted)}.form{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:800}.field input,.field select,.field textarea{border:1px solid var(--line);background:var(--warm);padding:12px;border-radius:4px;outline:none}.field textarea{min-height:115px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.15)}.cta{background:var(--orange);padding:35px 40px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:#171717}.cta h2{margin:0;font-size:32px;line-height:1.2}.cta p{margin:7px 0 0;max-width:650px}.cta .secondary{border-color:#171717}.footer{background:#171717;color:#f3efe6;padding:58px 0 25px}.footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:45px}.footer h3{font-size:15px;margin:0 0 15px}.footer a,.footer p{display:block;color:#aaa59b;font-size:13px;margin:7px 0}.footer a:hover{color:var(--orange)}.copyright{border-top:1px solid #44413b;padding-top:20px;color:#858077;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}.top{color:var(--orange)!important}.mobile-nav{display:none}
    @media(max-width:1024px){.channels{gap:12px;margin-left:0}.search{width:110px}.hero-grid{grid-template-columns:1fr}.hero-side{grid-template-columns:1fr 1fr;grid-template-rows:none}.hero-strip{grid-column:auto}.bento{grid-template-columns:1fr 1fr}.case:first-child{grid-row:span 2}.steps{grid-template-columns:repeat(2,1fr)}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}.footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}}
    @media(max-width:768px){.wrap{width:min(100% - 28px,600px)}.topbar,.nav{height:66px}.channels,.search,.nav-btn{display:none}.menu{display:block;margin-left:auto}.mobile-nav{position:absolute;top:66px;left:0;right:0;background:#20201e;padding:15px 20px;border-bottom:1px solid #45423d}.mobile-nav.show{display:block}.mobile-nav a{display:block;padding:10px 0;color:#ddd}.hero{padding:30px 0 45px}.hero-main{padding:28px 22px;min-height:450px}.hero-side{grid-template-columns:1fr}.hero-strip{display:block}.section{padding:65px 0}.section-head{display:block}.section-head p{margin-top:18px}.split,.news,.rank-wrap,.contact{grid-template-columns:1fr}.service-list{grid-template-columns:1fr}.service:nth-child(2),.service:nth-child(3){margin-top:0}.metrics{grid-template-columns:1fr 1fr}.metric:nth-child(2){border-right:0}.metric{border-bottom:1px solid #4a4741}.bento{grid-template-columns:1fr;grid-template-rows:auto}.case:first-child{grid-row:auto}.case{min-height:240px}.voices,.partners{grid-template-columns:1fr}.news-row{grid-template-columns:75px 1fr}.news-row small{display:none}.form{grid-template-columns:1fr}.field.full{grid-column:auto}.cta{display:block;padding:28px 24px}.cta .secondary{margin-top:18px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}
    @media(max-width:520px){h1{font-size:40px}.hero-copy{font-size:15px}.actions a{width:100%;text-align:center}.metrics{grid-template-columns:1fr}.metric{border-right:0!important}.steps{grid-template-columns:1fr}.step{border-right:0;border-bottom:1px solid var(--line)!important}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-top:8px}}
    @media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category1 */
:root{
      --ink:#171717;--ink2:#22201e;--paper:#f3f0e9;--warm:#fffdf8;
      --muted:#77736b;--line:#d9d3c8;--orange:#e76032;--lime:#c9df62;
      --shadow:0 18px 50px rgba(22,20,17,.09);--radius:10px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.75}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    :focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    .wrap{width:min(1240px,calc(100% - 48px));margin:auto}
    .topbar{height:76px;background:rgba(23,23,23,.97);color:#f7f3ea;border-bottom:1px solid #3b3935;position:sticky;top:0;z-index:30}
    .nav{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:900;font-size:22px;letter-spacing:-1px;white-space:nowrap}
    .brand-mark{width:30px;height:30px;background:var(--orange);display:grid;place-items:center;color:#171717;font-weight:900;clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%)}
    .channels{display:flex;align-items:center;gap:22px;margin-right:auto}
    .channels a{font-size:14px;color:#bdb9b0;position:relative;padding:25px 0;white-space:nowrap}
    .channels a:hover,.channels a.active{color:#fff}
    .channels a.active:after{content:"";position:absolute;height:2px;background:var(--orange);left:0;right:0;bottom:17px}
    .search{border:1px solid #514e48;border-radius:5px;padding:8px 12px;color:#aca79e;background:#272622;width:150px;outline:none}
    .search:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.2)}
    .nav-btn,.primary{background:var(--orange);color:#fff;padding:11px 17px;border-radius:5px;font-weight:750;transition:.25s}
    .nav-btn:hover,.primary:hover{transform:translateY(-2px);filter:brightness(1.1)}
    .secondary{display:inline-flex;align-items:center;gap:8px;border:1px solid #665f55;padding:11px 17px;border-radius:5px;font-weight:750;transition:.25s}
    .secondary:hover{background:var(--ink);color:#fff;border-color:var(--ink);transform:translateY(-2px)}
    .menu{display:none;color:white;background:transparent;font-size:25px}
    .mobile-nav{display:none;position:absolute;top:76px;left:0;right:0;background:#20201e;padding:15px 24px;border-bottom:1px solid #45423d}
    .mobile-nav.show{display:block}
    .mobile-nav a{display:block;padding:10px 0;color:#ddd}
    .hero{background:var(--ink);color:#f8f5ed;padding:34px 0 70px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;opacity:.15;background-image:linear-gradient(#aaa 1px,transparent 1px),linear-gradient(90deg,#aaa 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(90deg,#000,transparent 86%)}
    .crumb{position:relative;color:#a9a49b;font-size:13px;margin-bottom:38px}
    .crumb a{color:#e0dcd4}.crumb span{color:var(--orange);padding:0 8px}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.04fr .96fr;gap:60px;align-items:end}
    .eyebrow,.tag{font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--orange);font-weight:800}
    h1{font-size:clamp(42px,6vw,76px);line-height:1.08;letter-spacing:-.055em;margin:14px 0 22px;max-width:680px}
    .hero-copy{font-size:17px;color:#cbc6bc;max-width:590px;margin:0 0 30px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px}
    .hero-image{position:relative;min-height:370px;border:1px solid #4b4842;overflow:hidden;background:#282622}
    .hero-image img{width:100%;height:370px;object-fit:cover;opacity:.66;transition:.45s}
    .hero-image:hover img{transform:scale(1.04);opacity:.82}
    .image-note{position:absolute;left:20px;bottom:20px;background:rgba(23,23,23,.86);padding:13px 17px;border-left:3px solid var(--orange);font-size:13px;color:#f4f0e7}
    .corner{position:absolute;right:17px;top:17px;color:var(--lime);font-size:12px;letter-spacing:.12em}
    .section{padding:88px 0}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:36px}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.15;letter-spacing:-.045em;margin:9px 0 0}
    .section-head p{max-width:500px;color:var(--muted);margin:0}
    .service-layout{display:grid;grid-template-columns:1.08fr .92fr;gap:18px;align-items:stretch}
    .feature-panel{padding:38px;background:var(--warm);border:1px solid var(--line);box-shadow:var(--shadow);min-height:480px;display:flex;flex-direction:column;justify-content:space-between}
    .feature-panel h3{font-size:32px;line-height:1.25;margin:14px 0}
    .feature-panel p{color:#666158;max-width:570px}
    .feature-image{margin:25px -38px -38px;height:205px;overflow:hidden}
    .feature-image img{width:100%;height:100%;object-fit:cover;transition:.4s}
    .feature-panel:hover .feature-image img{transform:scale(1.035)}
    .service-list{display:flex;flex-direction:column;border-top:1px solid var(--line)}
    .service-item{padding:21px 24px;border-bottom:1px solid var(--line);display:grid;grid-template-columns:44px 1fr auto;gap:16px;align-items:start;transition:.25s}
    .service-item:hover{background:var(--warm);padding-left:29px}
    .service-item strong{font-size:24px;color:var(--orange);line-height:1}
    .service-item h3{font-size:19px;margin:0 0 3px}
    .service-item p{font-size:14px;color:var(--muted);margin:0;line-height:1.65}
    .arrow{color:var(--orange);font-weight:900;font-size:20px}
    .dark{background:var(--ink2);color:#f5f1e8}
    .dark .section-head p{color:#aaa59a}
    .metrics{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #4b4842;border-bottom:1px solid #4b4842}
    .metric{padding:28px 24px;border-right:1px solid #4b4842}
    .metric:last-child{border-right:0}
    .metric b{font-size:42px;line-height:1;color:var(--lime);display:block;margin-bottom:12px}
    .metric span{font-size:14px;color:#c2bdb3}
    .detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-top:28px}
    .detail-card{padding:23px;border:1px solid #48453f;background:#292825}
    .detail-card h3{font-size:18px;margin:10px 0 6px}
    .detail-card p{font-size:14px;color:#aaa59b;margin:0}
    .case-layout{display:grid;grid-template-columns:1.35fr .65fr;gap:16px}
    .case-card{position:relative;min-height:370px;overflow:hidden;background:var(--ink);color:#fff}
    .case-card.small{min-height:177px}
    .case-card img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;opacity:.55;transition:.45s}
    .case-card:hover img{transform:scale(1.05);opacity:.72}
    .case-card:after{content:"";position:absolute;inset:30% 0 0;background:linear-gradient(transparent,rgba(0,0,0,.86))}
    .case-content{position:absolute;z-index:2;left:25px;right:25px;bottom:22px}
    .case-content h3{font-size:24px;margin:8px 0 3px}
    .case-content p{font-size:13px;color:#d6d1c8;margin:0}
    .case-stack{display:grid;gap:16px}
    .case-card.small .case-content h3{font-size:19px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .step{padding:28px 22px;min-height:205px;border-right:1px solid var(--line);position:relative}
    .step:last-child{border-right:0}
    .step-no{font-size:38px;color:var(--orange);font-weight:900;line-height:1}
    .step h3{font-size:18px;margin:17px 0 6px}
    .step p{font-size:14px;color:var(--muted);margin:0}
    .faq-wrap{max-width:930px}
    .faq-item{border-top:1px solid #4b4842}
    .faq-item:last-child{border-bottom:1px solid #4b4842}
    .faq-q{width:100%;padding:21px 0;background:transparent;color:#fff;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:750;font-size:17px}
    .faq-q span{color:var(--orange);font-size:24px;transition:.25s}
    .faq-a{display:none;color:#bdb8ae;font-size:14px;padding:0 50px 22px 0}
    .faq-item.open .faq-a{display:block}.faq-item.open .faq-q span{transform:rotate(45deg)}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:48px;align-items:start}
    .contact-grid h2{font-size:clamp(32px,4vw,50px);line-height:1.15;letter-spacing:-.05em;margin:10px 0 15px}
    .contact-grid>div>p{color:var(--muted);max-width:420px}
    .contact-points{margin-top:30px;border-top:1px solid var(--line)}
    .contact-point{padding:15px 0;border-bottom:1px solid var(--line);font-size:14px}
    .contact-point b{display:block;font-size:12px;color:var(--orange);letter-spacing:.08em;margin-bottom:3px}
    .form{display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:28px;background:var(--warm);border:1px solid var(--line);box-shadow:var(--shadow)}
    .field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}
    .field label{font-size:13px;font-weight:750}.field input,.field select,.field textarea{border:1px solid var(--line);background:#fffdf9;padding:12px;border-radius:4px;outline:none;color:var(--ink)}
    .field textarea{min-height:120px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.15)}
    .submit-row{grid-column:1/-1;display:flex;align-items:center;gap:15px}.form-note{font-size:12px;color:var(--muted)}
    .footer{background:#171717;color:#f3efe6;padding:58px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:45px}
    .footer h3{font-size:15px;margin:0 0 15px}.footer a,.footer p{display:block;color:#aaa59b;font-size:13px;margin:7px 0}.footer a:hover{color:var(--orange)}
    .copyright{border-top:1px solid #44413b;padding-top:20px;color:#858077;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    @media(max-width:1024px){.channels{gap:12px}.nav{gap:17px}.search{width:110px}.hero-grid{gap:30px}.service-layout{grid-template-columns:1fr}.metrics{grid-template-columns:repeat(2,1fr)}.metric:nth-child(2){border-right:0}.metric{border-bottom:1px solid #4b4842}.steps{grid-template-columns:repeat(2,1fr)}.step:nth-child(2){border-right:0}.step{border-bottom:1px solid var(--line)}}
    @media(max-width:768px){.topbar,.nav{height:66px}.channels,.search,.nav-btn{display:none}.menu{display:block;margin-left:auto}.mobile-nav{top:66px}.hero{padding:28px 0 48px}.hero-grid{grid-template-columns:1fr}.hero-image{min-height:280px}.hero-image img{height:280px}.section{padding:62px 0}.section-head{display:block;margin-bottom:27px}.section-head p{margin-top:14px}.case-layout{grid-template-columns:1fr}.contact-grid{grid-template-columns:1fr;gap:30px}.footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}}
    @media(max-width:520px){.wrap{width:min(100% - 32px,1240px)}h1{font-size:43px}.hero-copy{font-size:15px}.feature-panel{padding:25px;min-height:0}.feature-image{margin:22px -25px -25px}.service-item{grid-template-columns:32px 1fr auto;padding:18px 0}.metrics{grid-template-columns:1fr 1fr}.metric{padding:23px 14px}.metric b{font-size:32px}.detail-grid{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step{border-right:0}.form{grid-template-columns:1fr;padding:20px}.field.full,.submit-row{grid-column:auto}.submit-row{display:block}.submit-row .primary{width:100%;margin-bottom:10px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category2 */
:root{--ink:#171717;--ink2:#22201e;--paper:#f3f0e9;--warm:#fffdf8;--muted:#77736b;--line:#d9d3c8;--orange:#e76032;--lime:#c9df62;--shadow:0 18px 50px rgba(22,20,17,.09);--radius:10px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.75}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .wrap{width:min(1240px,calc(100% - 48px));margin:auto}
    .topbar{height:76px;background:rgba(23,23,23,.97);color:#f7f3ea;border-bottom:1px solid #3b3935;position:sticky;top:0;z-index:30}
    .nav{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:900;font-size:22px;letter-spacing:-1px;white-space:nowrap}
    .brand-mark{width:30px;height:30px;background:var(--orange);display:grid;place-items:center;color:#171717;font-weight:900;clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%)}
    .channels{display:flex;align-items:center;gap:25px;flex:1}
    .channels a{font-size:14px;color:#bdb9b0;position:relative;padding:25px 0;white-space:nowrap}
    .channels a:hover,.channels a.active{color:#fff}
    .channels a.active:after{content:"";position:absolute;height:2px;background:var(--orange);left:0;right:0;bottom:17px}
    .search{border:1px solid #514e48;border-radius:5px;padding:8px 12px;color:#aca79e;background:#272622;width:150px;outline:none}
    .search:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.2)}
    .nav-btn,.primary{background:var(--orange);color:#fff;padding:11px 17px;border-radius:5px;font-weight:750;transition:.25s}
    .nav-btn:hover,.primary:hover{transform:translateY(-2px);filter:brightness(1.1)}
    .secondary{border:1px solid #514e48;color:#eee;background:transparent;padding:10px 16px;border-radius:5px;font-weight:700;transition:.25s}
    .secondary:hover{border-color:var(--orange);color:var(--orange)}
    .menu{display:none;color:white;background:transparent;font-size:25px}
    a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    .page-hero{background:var(--ink);color:#f8f5ed;padding:72px 0 68px;position:relative;overflow:hidden}
    .page-hero:before{content:"";position:absolute;inset:0;opacity:.14;background-image:linear-gradient(#aaa 1px,transparent 1px),linear-gradient(90deg,#aaa 1px,transparent 1px);background-size:54px 54px}
    .hero-layout{position:relative;display:grid;grid-template-columns:1fr 430px;gap:56px;align-items:end}
    .eyebrow,.tag{font-size:11px;letter-spacing:.13em;color:var(--orange);font-weight:800}
    h1{font-size:clamp(42px,6.5vw,76px);line-height:1.08;letter-spacing:-.06em;margin:14px 0 20px;max-width:760px}
    .hero-lead{font-size:18px;color:#cbc6bc;max-width:650px;margin:0}
    .hero-image{height:300px;border:1px solid #514d46;position:relative;overflow:hidden;background:#292825}
    .hero-image img{width:100%;height:100%;object-fit:cover;opacity:.7}
    .hero-image:after{content:"案例索引 / 02";position:absolute;left:20px;bottom:18px;color:#fff;font-size:12px;letter-spacing:.14em}
    .hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
    .crumb{position:relative;color:#9e988d;font-size:13px;margin-bottom:18px}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;gap:28px;align-items:end;margin-bottom:34px}
    .section-head h2{font-size:clamp(30px,4vw,46px);line-height:1.15;letter-spacing:-.045em;margin:8px 0 0}
    .section-head p{max-width:480px;color:var(--muted);margin:0}
    .filter-bar{display:flex;justify-content:space-between;align-items:center;gap:18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:16px 0;margin-bottom:18px}
    .filters{display:flex;gap:8px;flex-wrap:wrap}
    .filter{background:transparent;border:1px solid #bdb6aa;color:#625e56;border-radius:4px;padding:7px 13px;font-size:13px;transition:.2s}
    .filter:hover,.filter.active{background:var(--ink);border-color:var(--ink);color:#fff}
    .sort{border:1px solid var(--line);background:var(--warm);padding:8px 12px;border-radius:4px;color:#5f5a51}
    .case-list{border-top:1px solid var(--line)}
    .case-row{display:grid;grid-template-columns:190px 1fr 130px 90px;gap:24px;align-items:center;padding:22px 0;border-bottom:1px solid var(--line);transition:.25s}
    .case-row:hover{background:rgba(255,253,248,.58);padding-left:12px;padding-right:12px}
    .thumb{width:190px;height:122px;overflow:hidden;background:#d3cec3}
    .thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
    .case-row:hover .thumb img{transform:scale(1.05)}
    .case-row h3{margin:7px 0 4px;font-size:21px;line-height:1.35}
    .case-row p{margin:0;color:#706b62;font-size:14px;max-width:590px}
    .row-meta{color:#77736b;font-size:13px}
    .row-meta strong{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}
    .row-arrow{color:var(--orange);font-size:23px;text-align:right}
    .tag-line{display:flex;gap:7px;flex-wrap:wrap;margin-top:10px}
    .tag-chip{border:1px solid #c8c1b6;color:#6c665d;padding:3px 8px;border-radius:3px;font-size:11px}
    .dark{background:var(--ink);color:#f8f5ed}
    .dark .section-head p{color:#aaa59a}
    .insight-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:18px}
    .insight-card{padding:32px;background:#292825;border:1px solid #46433d}
    .insight-card h3{font-size:27px;line-height:1.25;margin:10px 0}
    .insight-card p{color:#bdb8ae;margin:0}
    .number-line{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:#48443d;margin-top:27px}
    .number-line div{background:#292825;padding:18px}
    .number-line b{display:block;color:var(--lime);font-size:30px;line-height:1.1}
    .number-line span{font-size:12px;color:#a9a399}
    .faq{max-width:930px}
    .faq-item{border-top:1px solid #4b4842}
    .faq-item:last-child{border-bottom:1px solid #4b4842}
    .faq-q{width:100%;padding:21px 0;background:transparent;color:#fff;text-align:left;display:flex;justify-content:space-between;font-weight:750;font-size:17px}
    .faq-q span{color:var(--orange);font-size:24px;transition:.25s}
    .faq-a{display:none;color:#bdb8ae;font-size:14px;padding:0 50px 22px 0}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .cta{background:var(--orange);padding:36px 40px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:#171717}
    .cta h2{margin:0;font-size:32px;line-height:1.2}
    .cta p{margin:7px 0 0;max-width:680px}
    .cta .secondary{border-color:#171717;color:#171717}
    .footer{background:#171717;color:#f3efe6;padding:58px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:45px}
    .footer h3{font-size:15px;margin:0 0 15px}
    .footer a,.footer p{display:block;color:#aaa59b;font-size:13px;margin:7px 0}
    .footer a:hover{color:var(--orange)}
    .copyright{border-top:1px solid #44413b;padding-top:20px;color:#858077;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    .mobile-nav{display:none}
    @media(max-width:1024px){.channels{gap:14px}.nav{gap:18px}.hero-layout{grid-template-columns:1fr 350px}.case-row{grid-template-columns:150px 1fr 100px 35px}.thumb{width:150px;height:105px}}
    @media(max-width:768px){.wrap{width:min(100% - 36px,620px)}.topbar,.nav{height:66px}.channels,.search,.nav-btn{display:none}.menu{display:block;margin-left:auto}.mobile-nav{position:absolute;top:66px;left:0;right:0;background:#20201e;padding:15px 20px;border-bottom:1px solid #45423d}.mobile-nav.show{display:block}.mobile-nav a{display:block;padding:10px 0;color:#ddd}.hero-layout{grid-template-columns:1fr;gap:32px}.page-hero{padding:45px 0 48px}.hero-image{height:230px}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:16px}.filter-bar{display:block}.sort{margin-top:13px}.case-row{grid-template-columns:110px 1fr 24px;gap:14px}.thumb{width:110px;height:92px}.row-meta{display:none}.case-row h3{font-size:17px}.case-row p{font-size:13px;line-height:1.6}.insight-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}.cta{display:block;padding:28px}.cta .secondary{margin-top:20px}}
    @media(max-width:520px){h1{font-size:43px}.hero-actions a{width:100%;text-align:center}.case-row{grid-template-columns:1fr;gap:10px}.thumb{width:100%;height:150px}.row-arrow{text-align:left}.number-line{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-bottom:9px}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category3 */
:root{--ink:#171717;--ink2:#22201e;--paper:#f3f0e9;--warm:#fffdf8;--muted:#77736b;--line:#d9d3c8;--orange:#e76032;--lime:#c9df62;--shadow:0 18px 50px rgba(22,20,17,.09);--radius:10px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.75}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .wrap{width:min(1240px,calc(100% - 48px));margin:0 auto}
    .topbar{height:76px;background:rgba(23,23,23,.97);color:#f7f3ea;border-bottom:1px solid #3b3935;position:sticky;top:0;z-index:30}
    .nav{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:900;font-size:22px;letter-spacing:-1px;white-space:nowrap}
    .brand-mark{width:30px;height:30px;background:var(--orange);display:grid;place-items:center;color:#171717;font-weight:900;clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%)}
    .channels{display:flex;align-items:center;gap:23px;margin-left:18px}
    .channels a{font-size:14px;color:#bdb9b0;position:relative;padding:25px 0;white-space:nowrap}
    .channels a:hover,.channels a.active{color:#fff}
    .channels a.active:after{content:"";position:absolute;height:2px;background:var(--orange);left:0;right:0;bottom:17px}
    .search{border:1px solid #514e48;border-radius:5px;padding:8px 12px;color:#aca79e;background:#272622;width:150px;outline:none;margin-left:auto}
    .search:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.2)}
    .nav-btn,.primary{background:var(--orange);color:#fff;padding:11px 17px;border-radius:5px;font-weight:750;transition:.25s}
    .nav-btn:hover,.primary:hover{transform:translateY(-2px);filter:brightness(1.1)}
    .secondary{background:transparent;border:1px solid currentColor;color:inherit;padding:10px 17px;border-radius:5px;font-weight:700;transition:.25s}
    .secondary:hover{background:var(--warm);color:var(--ink);transform:translateY(-2px)}
    .menu{display:none;color:white;background:transparent;font-size:25px}
    .mobile-nav{display:none}
    .eyebrow,.tag{font-size:11px;letter-spacing:.13em;color:var(--orange);font-weight:800}
    .hero{padding:65px 0 78px;background:var(--ink);color:#f8f5ed;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;opacity:.16;background-image:linear-gradient(#aaa 1px,transparent 1px),linear-gradient(90deg,#aaa 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(90deg,#000,transparent 85%)}
    .hero-layout{position:relative;display:grid;grid-template-columns:1fr 1.05fr;gap:56px;align-items:center}
    .crumb{font-size:13px;color:#aaa59a;margin-bottom:22px}
    .crumb a:hover{color:var(--orange)}
    h1{font-size:clamp(42px,6vw,72px);line-height:1.08;letter-spacing:-.06em;margin:12px 0 22px;max-width:650px}
    .hero-copy{color:#d2cec5;font-size:17px;max-width:570px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
    .hero-visual{position:relative;min-height:410px;border:1px solid #565149;background:#292825;overflow:hidden;clip-path:polygon(5% 0,100% 0,100% 92%,94% 100%,0 100%,0 8%)}
    .hero-visual img{width:100%;height:410px;object-fit:cover;opacity:.55}
    .hero-visual:after{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(23,23,23,.1),rgba(23,23,23,.78))}
    .visual-panel{position:absolute;z-index:2;left:30px;right:30px;bottom:28px;border-top:1px solid var(--orange);padding-top:15px}
    .visual-panel strong{font-size:25px;display:block;color:#fff}
    .visual-panel span{font-size:13px;color:#c8c2b8}
    .coordinate{position:absolute;z-index:2;right:25px;top:25px;color:var(--lime);font-size:12px;border:1px solid rgba(201,223,98,.6);padding:5px 9px}
    .section{padding:88px 0}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:38px}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.15;letter-spacing:-.045em;margin:9px 0 0}
    .section-head p{max-width:500px;color:var(--muted);margin:0}
    .path-intro{display:grid;grid-template-columns:1.1fr .9fr;gap:35px;margin-bottom:35px}
    .feature-panel{padding:34px;background:var(--warm);border:1px solid var(--line);box-shadow:var(--shadow)}
    .feature-panel h3{font-size:29px;line-height:1.25;margin:12px 0}
    .feature-panel p{color:#666158}
    .notice{padding:22px;background:var(--ink2);color:#eee9df;border-left:4px solid var(--orange)}
    .notice p{color:#bdb8ae;font-size:14px;margin:9px 0 0}
    .filterbar{display:flex;align-items:center;justify-content:space-between;gap:18px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:15px 0;margin-bottom:27px}
    .filter-tags{display:flex;gap:8px;flex-wrap:wrap}
    .filter-tags button{padding:7px 13px;border:1px solid var(--line);background:transparent;color:#625d55;border-radius:4px;font-size:13px;transition:.2s}
    .filter-tags button:hover,.filter-tags button.selected{background:var(--ink);border-color:var(--ink);color:#fff}
    .sort{border:1px solid var(--line);background:var(--warm);padding:8px 11px;border-radius:4px;color:#5d5850;outline:none}
    .irregular-grid{display:grid;grid-template-columns:1.08fr .7fr .7fr;grid-template-rows:240px 240px;gap:15px}
    .plan-card{position:relative;overflow:hidden;background:var(--ink2);color:#fff;border:1px solid #47433d;min-height:190px;transition:.3s}
    .plan-card:hover{border-color:var(--orange);transform:translateY(-3px);box-shadow:0 12px 28px rgba(22,20,17,.15)}
    .plan-card.wide{grid-row:span 2}
    .plan-card.tall{grid-row:span 2}
    .plan-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.48;transition:.4s}
    .plan-card:hover img{transform:scale(1.05);opacity:.62}
    .plan-card:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(17,17,16,.94),rgba(17,17,16,.08) 75%)}
    .plan-content{position:absolute;z-index:2;left:23px;right:20px;bottom:20px}
    .plan-content h3{font-size:22px;line-height:1.25;margin:7px 0}
    .plan-content p{font-size:13px;color:#d0cbc1;margin:0;line-height:1.6}
    .plan-content a{display:inline-block;margin-top:11px;color:var(--lime);font-size:13px;font-weight:800}
    .plan-no{position:absolute;z-index:2;right:16px;top:13px;color:var(--lime);font-weight:900;font-size:18px}
    .dark{background:var(--ink);color:#f8f5ed}
    .dark .section-head p{color:#aaa59a}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #4b4842;border-bottom:1px solid #4b4842}
    .step{padding:27px 22px 30px;border-right:1px solid #4b4842;position:relative}
    .step:last-child{border-right:0}
    .step-num{font-size:35px;color:var(--orange);font-weight:900;line-height:1}
    .step h3{font-size:18px;margin:17px 0 7px}
    .step p{font-size:13px;color:#aaa59a;margin:0}
    .faq{max-width:930px}
    .faq-item{border-top:1px solid #4b4842}
    .faq-item:last-child{border-bottom:1px solid #4b4842}
    .faq-q{width:100%;padding:21px 0;background:transparent;color:#fff;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:750;font-size:17px}
    .faq-q span{color:var(--orange);font-size:24px;line-height:1;transition:.25s}
    .faq-a{display:none;color:#bdb8ae;font-size:14px;padding:0 50px 22px 0}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .cta{background:var(--orange);padding:35px 40px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:#171717}
    .cta h2{margin:0;font-size:32px;line-height:1.2}
    .cta p{margin:7px 0 0;max-width:650px}
    .cta .secondary{border-color:#171717}
    .contact{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:start}
    .contact h2{font-size:42px;line-height:1.2;letter-spacing:-.05em;margin:8px 0 16px}
    .contact-copy{color:var(--muted)}
    .form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field{display:flex;flex-direction:column;gap:6px}
    .field.full{grid-column:1/-1}
    .field label{font-size:13px;font-weight:750}
    .field input,.field select,.field textarea{border:1px solid var(--line);background:var(--warm);padding:12px;border-radius:4px;outline:none}
    .field textarea{min-height:115px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.15)}
    .form-note{font-size:12px;color:var(--muted);margin-top:10px}
    .footer{background:#171717;color:#f3efe6;padding:58px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:45px}
    .footer h3{font-size:15px;margin:0 0 15px}
    .footer a,.footer p{display:block;color:#aaa59b;font-size:13px;margin:7px 0}
    .footer a:hover{color:var(--orange)}
    .copyright{border-top:1px solid #44413b;padding-top:20px;color:#858077;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    :focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    @media(max-width:1100px){.channels{gap:13px;margin-left:5px}.nav{gap:17px}.search{width:120px}.hero-layout{gap:30px}.irregular-grid{grid-template-columns:1fr 1fr}.plan-card.wide{grid-column:span 2;grid-row:span 1}.plan-card.tall{grid-row:span 2}}
    @media(max-width:768px){.wrap{width:min(100% - 34px,620px)}.topbar,.nav{height:66px}.channels,.search,.nav-btn{display:none}.menu{display:block;margin-left:auto}.mobile-nav{position:absolute;top:66px;left:0;right:0;background:#20201e;padding:15px 20px;border-bottom:1px solid #45423d}.mobile-nav.show{display:block}.mobile-nav a{display:block;padding:10px 0;color:#ddd}.hero{padding:38px 0 48px}.hero-layout{grid-template-columns:1fr}.hero-visual,.hero-visual img{height:330px;min-height:330px}.section{padding:65px 0}.section-head,.path-intro,.contact{display:block}.section-head p{margin-top:15px}.path-intro .notice{margin-top:15px}.filterbar{align-items:flex-start;flex-direction:column}.sort{width:100%}.steps{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step{border-bottom:1px solid #4b4842}.step:nth-child(3),.step:nth-child(4){border-bottom:0}.contact-copy{margin-bottom:30px}.footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}}
    @media(max-width:520px){.wrap{width:calc(100% - 28px)}h1{font-size:43px}.hero-actions a{width:100%;text-align:center}.irregular-grid{display:flex;flex-direction:column}.plan-card,.plan-card.wide,.plan-card.tall{height:250px;min-height:250px}.steps{grid-template-columns:1fr}.step,.step:nth-child(n){border-right:0;border-bottom:1px solid #4b4842}.step:last-child{border-bottom:0}.form{grid-template-columns:1fr}.field.full{grid-column:auto}.cta{padding:28px 22px;display:block}.cta h2{font-size:27px}.cta .secondary{display:inline-block;margin-top:18px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-bottom:8px}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* roulang page: category4 */
:root{--ink:#171717;--ink2:#22201e;--paper:#f3f0e9;--warm:#fffdf8;--muted:#77736b;--line:#d9d3c8;--orange:#e76032;--lime:#c9df62;--shadow:0 18px 50px rgba(22,20,17,.09);--radius:10px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.75}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .wrap{width:min(1240px,calc(100% - 40px));margin:auto}
    .topbar{height:76px;background:rgba(23,23,23,.97);color:#f7f3ea;border-bottom:1px solid #3b3935;position:sticky;top:0;z-index:30}
    .nav{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:900;font-size:22px;letter-spacing:-1px;white-space:nowrap}
    .brand-mark{width:30px;height:30px;background:var(--orange);display:grid;place-items:center;color:#171717;font-weight:900;clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%)}
    .channels{display:flex;gap:23px;align-items:center;flex:1}
    .channels a{font-size:14px;color:#bdb9b0;position:relative;padding:25px 0}
    .channels a:hover,.channels a.active{color:#fff}
    .channels a.active:after{content:"";position:absolute;height:2px;background:var(--orange);left:0;right:0;bottom:17px}
    .search{border:1px solid #514e48;border-radius:5px;padding:8px 12px;color:#aca79e;background:#272622;width:120px;outline:none}
    .search:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.2)}
    .nav-btn,.primary{background:var(--orange);color:#fff;padding:11px 17px;border-radius:5px;font-weight:750;transition:.25s}
    .nav-btn:hover,.primary:hover{transform:translateY(-2px);filter:brightness(1.1)}
    .secondary{border:1px solid #716b62;background:transparent;color:var(--ink);padding:11px 17px;border-radius:5px;font-weight:750;transition:.25s}
    .secondary:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .menu{display:none;color:white;background:transparent;font-size:25px}
    .mobile-nav{display:none}
    .eyebrow,.tag{font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--orange);font-weight:800}
    .hero{padding:70px 0 78px;background:var(--ink);color:#f8f5ed;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;opacity:.16;background-image:linear-gradient(#aaa 1px,transparent 1px),linear-gradient(90deg,#aaa 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(90deg,#000,transparent 82%)}
    .hero-grid{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:stretch}
    .hero-copy{display:flex;flex-direction:column;justify-content:center}
    .hero h1{font-size:clamp(40px,6vw,72px);line-height:1.08;letter-spacing:-.06em;margin:15px 0 22px;max-width:720px}
    .hero p{font-size:18px;color:#cbc6bc;max-width:620px;margin:0 0 30px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero .secondary{color:#f8f5ed;border-color:#656057}
    .hero-visual{min-height:390px;border:1px solid #514d46;background:linear-gradient(135deg,rgba(20,20,18,.35),rgba(20,20,18,.78)),url('/assets/images/backpic/back-3.webp') center/cover;padding:25px;display:flex;align-items:flex-end;position:relative;clip-path:polygon(0 0,94% 0,100% 7%,100% 100%,6% 100%,0 93%)}
    .visual-panel{background:rgba(23,23,23,.9);border:1px solid #625d53;width:100%;padding:22px}
    .visual-panel strong{font-size:31px;display:block;line-height:1.2;color:#fff}
    .visual-panel small{color:#b4aea4}
    .section{padding:88px 0}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:38px}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.15;letter-spacing:-.045em;margin:9px 0 0}
    .section-head p{max-width:510px;color:var(--muted);margin:0}
    .guide-layout{display:grid;grid-template-columns:82px 1fr;gap:30px}
    .guide-index{display:flex;flex-direction:column;gap:0}
    .guide-index span{height:116px;border-left:1px solid var(--line);padding-left:16px;color:var(--muted);font-size:13px;position:relative}
    .guide-index span:before{content:"";position:absolute;left:-4px;top:3px;width:7px;height:7px;background:var(--orange)}
    .guide-index b{display:block;font-size:25px;color:var(--ink)}
    .stage{display:grid;grid-template-columns:112px 1fr 170px;gap:22px;align-items:center;padding:27px 0;border-top:1px solid var(--line)}
    .stage:last-child{border-bottom:1px solid var(--line)}
    .stage-no{font-size:42px;color:var(--orange);font-weight:900;line-height:1}
    .stage h3{font-size:23px;margin:0 0 6px}
    .stage p{margin:0;color:#716c63;font-size:15px}
    .stage-meta{font-size:12px;color:var(--muted);border-left:1px solid var(--line);padding-left:18px}
    .stage-meta b{display:block;color:var(--ink);font-size:14px;margin-bottom:4px}
    .feature{background:var(--ink);color:#f7f3ea;padding:36px;display:grid;grid-template-columns:1.2fr .8fr;gap:35px;align-items:center}
    .feature h2{font-size:clamp(28px,4vw,43px);line-height:1.18;margin:10px 0 15px;letter-spacing:-.04em}
    .feature p{color:#bbb6ac;max-width:600px}
    .feature img{width:100%;height:270px;object-fit:cover;opacity:.82}
    .tip-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}
    .tip-card{background:var(--warm);border:1px solid var(--line);padding:30px;box-shadow:var(--shadow)}
    .tip-card h3{font-size:24px;margin:8px 0}
    .tip-card p{color:#6d685f;margin:0}
    .check-list{list-style:none;padding:0;margin:18px 0 0}
    .check-list li{padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}
    .check-list li:before{content:"✓";color:var(--orange);font-weight:900;margin-right:10px}
    .tags{display:flex;gap:9px;flex-wrap:wrap}
    .tag-chip{border:1px solid #746e64;color:#625d55;padding:6px 10px;border-radius:3px;font-size:12px}
    .faq{max-width:930px}
    .faq-item{border-top:1px solid #4b4842}
    .faq-item:last-child{border-bottom:1px solid #4b4842}
    .faq-q{width:100%;padding:21px 0;background:transparent;color:#fff;text-align:left;display:flex;justify-content:space-between;font-weight:750;font-size:17px}
    .faq-q span{color:var(--orange);font-size:24px;transition:.25s}
    .faq-a{display:none;color:#bdb8ae;font-size:14px;padding:0 50px 22px 0}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .dark{background:var(--ink);color:#f8f5ed}
    .cta{background:var(--orange);padding:35px 40px;display:flex;justify-content:space-between;align-items:center;gap:20px;color:#171717}
    .cta h2{margin:0;font-size:32px;line-height:1.2}
    .cta p{margin:7px 0 0;max-width:650px}
    .form-area{display:grid;grid-template-columns:.82fr 1.18fr;gap:45px;align-items:start}
    .form{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .field label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}
    .field input,.field select,.field textarea{width:100%;border:1px solid var(--line);background:var(--warm);padding:12px;border-radius:4px;outline:none}
    .field textarea{min-height:115px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.15)}
    .full{grid-column:1/-1}
    .footer{background:#171717;color:#f3efe6;padding:58px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:45px}
    .footer h3{font-size:15px;margin:0 0 15px}
    .footer a,.footer p{display:block;color:#aaa59b;font-size:13px;margin:7px 0}
    .footer a:hover{color:var(--orange)}
    .copyright{border-top:1px solid #44413b;padding-top:20px;color:#858077;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    :focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    @media(max-width:1024px){.channels{gap:12px}.channels a{font-size:13px}.search{display:none}.hero-grid{grid-template-columns:1fr}.hero-visual{min-height:300px}.footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}}
    @media(max-width:768px){.topbar,.nav{height:66px}.channels,.nav-btn{display:none}.menu{display:block;margin-left:auto}.mobile-nav{position:absolute;top:66px;left:0;right:0;background:#20201e;padding:15px 20px;border-bottom:1px solid #45423d}.mobile-nav.show{display:block}.mobile-nav a{display:block;padding:10px 0;color:#ddd}.hero{padding:48px 0 55px}.section{padding:62px 0}.guide-layout{grid-template-columns:1fr}.guide-index{display:none}.stage{grid-template-columns:70px 1fr}.stage-meta{grid-column:2;border-left:0;padding-left:0}.feature,.tip-grid,.form-area{grid-template-columns:1fr}.form{grid-template-columns:1fr}.full{grid-column:auto}.cta{display:block;padding:28px}.cta .secondary{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr}}
    @media(max-width:520px){.wrap{width:min(100% - 28px,1240px)}.brand{font-size:20px}.hero h1{font-size:43px}.hero p{font-size:16px}.hero-actions a{width:100%;text-align:center}.hero-visual{min-height:250px;padding:14px}.visual-panel{padding:16px}.visual-panel strong{font-size:25px}.stage{grid-template-columns:52px 1fr}.stage-no{font-size:32px}.stage h3{font-size:19px}.feature,.tip-card{padding:23px}.feature img{height:210px}.footer-grid{grid-template-columns:1fr}.copyright{display:block}.copyright span{display:block;margin-bottom:10px}}
    @media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category5 */
:root{--ink:#171717;--ink2:#22201e;--paper:#f3f0e9;--warm:#fffdf8;--muted:#77736b;--line:#d9d3c8;--orange:#e76032;--lime:#c9df62;--shadow:0 18px 50px rgba(22,20,17,.09);--radius:10px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;line-height:1.75}
    a{text-decoration:none;color:inherit}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    .wrap{width:min(1240px,calc(100% - 48px));margin:0 auto}
    .topbar{height:76px;background:rgba(23,23,23,.97);color:#f7f3ea;border-bottom:1px solid #3b3935;position:sticky;top:0;z-index:30}
    .nav{height:76px;display:flex;align-items:center;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;font-weight:900;font-size:22px;letter-spacing:-1px;white-space:nowrap}
    .brand-mark{width:30px;height:30px;background:var(--orange);display:grid;place-items:center;color:#171717;font-weight:900;clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%)}
    .channels{display:flex;align-items:center;gap:25px;margin-left:18px}
    .channels a{font-size:14px;color:#bdb9b0;position:relative;padding:25px 0;white-space:nowrap}
    .channels a:hover,.channels a.active{color:#fff}
    .channels a.active:after{content:"";position:absolute;height:2px;background:var(--orange);left:0;right:0;bottom:17px}
    .search{border:1px solid #514e48;border-radius:5px;padding:8px 12px;color:#aca79e;background:#272622;width:145px;outline:none;margin-left:auto}
    .search:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.2)}
    .nav-btn,.primary{background:var(--orange);color:#fff;padding:11px 17px;border-radius:5px;font-weight:750;transition:.25s}
    .nav-btn:hover,.primary:hover{transform:translateY(-2px);filter:brightness(1.1)}
    .outline{border:1px solid var(--line);padding:11px 17px;border-radius:5px;font-weight:750;display:inline-block;transition:.25s}
    .outline:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
    .menu{display:none;color:white;background:transparent;font-size:25px}
    .mobile-nav{display:none}
    .hero{background:var(--ink);color:#f8f5ed;padding:54px 0 72px;position:relative;overflow:hidden}
    .hero:before{content:"";position:absolute;inset:0;opacity:.15;background-image:linear-gradient(#aaa 1px,transparent 1px),linear-gradient(90deg,#aaa 1px,transparent 1px);background-size:54px 54px;mask-image:linear-gradient(90deg,#000,transparent 88%)}
    .hero-grid{position:relative;display:grid;grid-template-columns:1fr 1.05fr;gap:52px;align-items:center}
    .eyebrow,.tag{font-size:11px;letter-spacing:.13em;text-transform:uppercase;color:var(--orange);font-weight:800}
    .crumb{font-size:13px;color:#9c978d;margin-bottom:28px}
    .hero h1{font-size:clamp(40px,6vw,72px);line-height:1.08;letter-spacing:-.06em;margin:0 0 22px;max-width:620px}
    .hero-copy{font-size:17px;color:#d0cbc2;max-width:570px;margin:0 0 31px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero .outline{border-color:#68635a;color:#f5f1e8}
    .hero .outline:hover{border-color:var(--orange);color:var(--orange)}
    .coupon-wall{background:var(--warm);color:var(--ink);border:1px solid #71695e;box-shadow:0 22px 60px rgba(0,0,0,.25);padding:10px;transform:rotate(1deg)}
    .coupon-inner{border:1px dashed #b7afa2;padding:34px 34px 29px;position:relative}
    .coupon-inner:before,.coupon-inner:after{content:"";position:absolute;width:20px;height:20px;background:var(--ink);border-radius:50%;top:50%;transform:translateY(-50%)}
    .coupon-inner:before{left:-11px}.coupon-inner:after{right:-11px}
    .coupon-head{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}
    .coupon-code{font-size:12px;color:var(--muted);letter-spacing:.08em}
    .coupon-value{font-size:72px;line-height:1;font-weight:950;color:var(--orange);letter-spacing:-.08em;margin:25px 0 9px}
    .coupon-value small{font-size:24px;letter-spacing:0}
    .coupon-inner h2{font-size:27px;line-height:1.25;margin:0 0 9px}
    .coupon-inner p{color:#6d685f;margin:0 0 24px;font-size:14px}
    .coupon-meta{display:flex;justify-content:space-between;gap:12px;color:#77736b;font-size:12px;border-top:1px solid var(--line);padding-top:17px}
    .section{padding:88px 0}
    .section-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:34px}
    .section-head h2{font-size:clamp(30px,4vw,48px);line-height:1.15;letter-spacing:-.045em;margin:8px 0 0}
    .section-head p{max-width:510px;color:var(--muted);margin:0}
    .collection{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .feature-card{background:var(--warm);border:1px solid var(--line);box-shadow:var(--shadow);min-height:445px;position:relative;overflow:hidden}
    .feature-card img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;transition:.45s}
    .feature-card:hover img{transform:scale(1.04)}
    .feature-card:after{content:"";position:absolute;inset:35% 0 0;background:linear-gradient(transparent,rgba(18,17,15,.9))}
    .feature-copy{position:absolute;z-index:1;left:32px;right:32px;bottom:29px;color:#fff}
    .feature-copy h3{font-size:30px;line-height:1.25;margin:10px 0}
    .feature-copy p{font-size:14px;color:#e0dbd2;margin:0;max-width:560px}
    .stack{display:grid;gap:14px}
    .topic-item{background:var(--warm);border:1px solid var(--line);padding:22px 24px;display:flex;justify-content:space-between;gap:20px;align-items:flex-start;transition:.25s}
    .topic-item:hover{border-color:var(--orange);transform:translateX(4px);box-shadow:var(--shadow)}
    .topic-item h3{font-size:20px;line-height:1.35;margin:8px 0}
    .topic-item p{font-size:14px;color:var(--muted);margin:0}
    .topic-arrow{font-size:25px;color:var(--orange);line-height:1}
    .benefits{background:var(--ink2);color:#f7f3eb;padding:30px 0}
    .benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid #4a4741}
    .benefit{padding:8px 28px;border-right:1px solid #4a4741}
    .benefit strong{display:block;color:var(--lime);font-size:32px;line-height:1.2}
    .benefit span{font-size:13px;color:#bdb8ad}
    .filter-bar{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:27px}
    .filter{border:1px solid var(--line);background:transparent;padding:8px 14px;border-radius:4px;font-size:13px;color:var(--muted);transition:.2s}
    .filter:hover,.filter.selected{background:var(--ink);color:#fff;border-color:var(--ink)}
    .mini-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .mini-card{background:var(--warm);border:1px solid var(--line);padding:18px;transition:.25s}
    .mini-card:hover{border-color:var(--orange);transform:translateY(-3px)}
    .mini-card img{height:148px;width:100%;object-fit:cover;margin-bottom:17px}
    .mini-card h3{font-size:19px;line-height:1.35;margin:9px 0}
    .mini-card p{font-size:14px;color:var(--muted);margin:0 0 15px}
    .faq-section{background:var(--ink);color:#fff}
    .faq{max-width:920px;margin:auto}
    .faq-item{border-top:1px solid #4b4842}
    .faq-item:last-child{border-bottom:1px solid #4b4842}
    .faq-q{width:100%;padding:20px 0;background:transparent;color:#fff;text-align:left;display:flex;justify-content:space-between;gap:20px;font-weight:750;font-size:17px}
    .faq-q span{color:var(--orange);font-size:25px;transition:.25s}
    .faq-a{display:none;color:#bdb8ae;font-size:14px;padding:0 55px 21px 0}
    .faq-item.open .faq-a{display:block}.faq-item.open .faq-q span{transform:rotate(45deg)}
    .contact{display:grid;grid-template-columns:.8fr 1.2fr;gap:42px;align-items:start}
    .contact h2{font-size:clamp(32px,4vw,50px);line-height:1.12;letter-spacing:-.05em;margin:10px 0 15px}
    .contact-copy{color:var(--muted);max-width:410px}
    .contact-note{border-left:3px solid var(--orange);padding-left:16px;color:#5f5a52;font-size:14px}
    .form{display:grid;grid-template-columns:1fr 1fr;gap:14px;background:var(--warm);border:1px solid var(--line);padding:27px;box-shadow:var(--shadow)}
    .field{display:flex;flex-direction:column;gap:7px}.field.full{grid-column:1/-1}
    .field label{font-size:13px;font-weight:750}.field input,.field select,.field textarea{border:1px solid var(--line);background:#fffdf8;padding:11px 12px;border-radius:4px;outline:none}
    .field textarea{min-height:115px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(231,96,50,.15)}
    .form .primary{width:max-content}
    .footer{background:#171717;color:#f3efe6;padding:58px 0 25px}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:35px;padding-bottom:45px}
    .footer h3{font-size:15px;margin:0 0 15px}.footer a,.footer p{display:block;color:#aaa59b;font-size:13px;margin:7px 0}.footer a:hover{color:var(--orange)}
    .copyright{border-top:1px solid #44413b;padding-top:20px;color:#858077;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    .copyright a{display:inline;color:#aaa59b}
    :focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    @media(max-width:1024px){.channels{gap:14px;margin-left:0}.channels a{font-size:13px}.nav{gap:16px}.benefit{padding:8px 18px}}
    @media(max-width:768px){.wrap{width:min(100% - 32px,620px)}.topbar,.nav{height:66px}.channels,.search,.nav-btn{display:none}.menu{display:block;margin-left:auto}.mobile-nav{position:absolute;top:66px;left:0;right:0;background:#20201e;padding:15px 20px;border-bottom:1px solid #45423d}.mobile-nav.show{display:block}.mobile-nav a{display:block;padding:10px 0;color:#ddd}.hero{padding:34px 0 48px}.hero-grid{grid-template-columns:1fr;gap:30px}.hero h1{font-size:46px}.coupon-wall{transform:none}.section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:15px}.collection,.contact{grid-template-columns:1fr}.benefit-grid{grid-template-columns:repeat(2,1fr);border-bottom:1px solid #4a4741}.benefit{padding:15px 18px;border-bottom:1px solid #4a4741}.mini-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1.4fr repeat(2,1fr);gap:22px}}
    @media(max-width:520px){.hero h1{font-size:40px}.coupon-inner{padding:25px 22px}.coupon-value{font-size:58px}.coupon-inner h2{font-size:23px}.mini-grid{grid-template-columns:1fr}.form{grid-template-columns:1fr;padding:20px}.field.full{grid-column:auto}.form .primary{width:100%}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin-bottom:8px}}
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}