/* roulang page: index */
:root{
      --ink:#202322;--muted:#6b716e;--paper:#f5f4ef;--warm:#fffdf8;
      --line:#dcded8;--orange:#e96735;--orange-dark:#bd4821;
      --dark:#202322;--lime:#d7e58a;--radius:16px;--shadow:0 16px 42px rgba(32,35,34,.08);
      --container:1200px;--ease:240ms ease;
    }
    *,*:before,*:after{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    :focus-visible{outline:3px solid var(--orange);outline-offset:3px}
    .container{width:min(calc(100% - 40px),var(--container));margin:auto}
    .topbar{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.94);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:var(--ease)}
    .topbar.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(0,0,0,.04)}
    .nav-main{min-height:76px;display:flex;align-items:center;gap:28px}
    .logo{font-weight:900;letter-spacing:-1px;font-size:20px;white-space:nowrap}
    .logo em{font-style:normal;color:var(--orange)}
    .nav-links{display:flex;align-items:center;gap:24px;margin-left:auto}
    .nav-links a,.subnav a{font-size:14px;color:#4d5350;position:relative}
    .nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--orange);transition:var(--ease)}
    .nav-links a:hover:after,.nav-links a.active:after{right:0}
    .nav-links a:hover,.nav-links a.active{color:var(--ink)}
    .nav-cta,.btn-primary{background:var(--orange);color:white;border:1px solid var(--orange);padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease)}
    .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);transform:translateY(-2px)}
    .btn-primary:active,.nav-cta:active{transform:translateY(0)}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid #8b908b;padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease)}
    .btn-secondary:hover{border-color:var(--ink);background:var(--ink);color:#fff;transform:translateY(-2px)}
    .menu-btn{display:none;background:none;border:0;font-size:26px}
    .subnav{border-top:1px solid var(--line);min-height:36px;display:flex;align-items:center;gap:22px;overflow:auto;white-space:nowrap}
    .subnav span{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:1px}
    main section{padding:88px 0}
    .eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--orange);font-weight:800;margin-bottom:14px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(42px,6vw,76px);line-height:1.08;letter-spacing:-4px;margin-bottom:24px}
    h2{font-size:clamp(28px,4vw,46px);line-height:1.18;letter-spacing:-2px;margin-bottom:16px}
    h3{font-size:20px;line-height:1.35;margin-bottom:10px}
    .lead{font-size:18px;color:#555b57;max-width:720px}
    .hero{min-height:670px;display:flex;align-items:center;position:relative;overflow:hidden;background:#252827;color:#fff;background-image:linear-gradient(90deg,rgba(20,23,22,.92) 20%,rgba(20,23,22,.55) 60%,rgba(20,23,22,.28)),url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center}
    .hero .container{position:relative}
    .hero-copy{max-width:790px;padding:90px 0}
    .hero .eyebrow{color:var(--lime)}
    .hero h1{max-width:760px}
    .hero p{color:#e2e4dd;font-size:19px;max-width:720px}
    .hero-actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
    .hero .btn-secondary{border-color:#bec4bc;color:#fff}
    .hero .btn-secondary:hover{background:#fff;color:var(--ink)}
    .hero-data{display:flex;gap:28px;margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.3);max-width:650px}
    .hero-data strong{display:block;font-size:25px;color:var(--lime)}
    .hero-data small{color:#c9cec8}
    .play-btn{position:absolute;right:8%;bottom:58px;width:74px;height:74px;border-radius:50%;border:1px solid rgba(255,255,255,.7);background:rgba(255,255,255,.12);color:#fff;font-size:24px;transition:var(--ease)}
    .play-btn:hover{background:var(--orange);border-color:var(--orange);transform:scale(1.04)}
    .split{display:grid;grid-template-columns:.85fr 1.15fr;gap:80px;align-items:center}
    .intro-image{position:relative}
    .intro-image img{width:100%;height:420px;object-fit:cover;border-radius:4px;box-shadow:var(--shadow)}
    .image-note{position:absolute;right:-22px;bottom:24px;background:var(--lime);padding:17px 20px;border-radius:10px;font-weight:800;font-size:14px}
    .triad{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .triad-item{padding:30px 28px;border-right:1px solid var(--line)}
    .triad-item:last-child{border-right:0}.num{color:var(--orange);font-size:13px;font-weight:900}
    .triad-item p,.card p,.list-item p{color:var(--muted);font-size:14px;margin-bottom:0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}
    .section-head p{max-width:580px;color:var(--muted)}
    .adv-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .adv-main,.adv-card{background:var(--warm);border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:var(--ease)}
    .adv-main{grid-row:span 2;min-height:310px;background-image:linear-gradient(130deg,rgba(255,253,248,.92),rgba(255,253,248,.5)),url('/assets/images/coverpic/cover-2.webp');background-size:cover;background-position:center}
    .adv-main:hover,.adv-card:hover,.product:hover,.list-item:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-3px)}
    .adv-card{display:flex;gap:18px;align-items:flex-start}.symbol{font-size:26px;color:var(--orange);font-weight:900}
    .scenario{background:#e9e9e3}
    .steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;border-left:1px solid #bfc2bb}
    .step{padding:22px;border-right:1px solid #bfc2bb;min-height:190px}.step strong{font-size:32px;color:var(--orange);display:block}.step span{display:inline-block;background:var(--lime);padding:3px 8px;border-radius:20px;font-size:12px;font-weight:700}
    .products{display:grid;grid-template-columns:1.3fr .85fr .85fr;gap:16px}.product{background:var(--warm);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:var(--ease)}.product img{height:190px;width:100%;object-fit:cover}.product-body{padding:22px}.product:first-child img{height:260px}
    .dark-section{background:var(--dark);color:#fff}.dark-section p{color:#c6cbc4}.dark-layout{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.dark-image img{height:370px;width:100%;object-fit:cover;filter:grayscale(20%)}.dark-line{border-top:1px solid #5c625d;padding-top:20px;margin-top:25px;color:var(--lime)}
    .timeline{border-left:2px solid var(--orange);padding-left:28px}.timeline article{position:relative;padding:0 0 30px}.timeline article:before{content:"";position:absolute;left:-37px;top:8px;width:14px;height:14px;border-radius:50%;background:var(--orange);border:3px solid var(--paper)}
    .stats{background:var(--lime);padding:38px 0}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.stat strong{font-size:40px;display:block;letter-spacing:-2px}.stat span{font-size:13px;color:#4f564b}
    .reviews{display:grid;grid-template-columns:1.3fr .7fr;gap:20px}.quote{background:var(--dark);color:#fff;border-radius:var(--radius);padding:38px;font-size:24px;line-height:1.55}.quote small{display:block;color:#c2c9c1;font-size:13px;margin-top:28px}.short-reviews{display:grid;gap:14px}.short-review{padding:24px;background:var(--warm);border:1px solid var(--line);border-radius:12px;color:#555}
    .compare{overflow-x:auto}.compare table{width:100%;border-collapse:collapse;background:var(--warm);min-width:680px}.compare th,.compare td{text-align:left;padding:18px;border-bottom:1px solid var(--line);font-size:14px}.compare th{background:#ecece5;color:#555}.compare td:last-child{color:var(--orange-dark);font-weight:700}
    .news-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:50px}.news-list{border-top:1px solid var(--line)}.news-row{display:flex;gap:20px;justify-content:space-between;padding:20px 0;border-bottom:1px solid var(--line)}.news-row time{color:var(--orange);font-size:13px;white-space:nowrap}.news-row a{font-weight:700}.news-row a:hover{color:var(--orange)}
    .news-feature{background:var(--warm);padding:18px;border:1px solid var(--line);border-radius:var(--radius)}.news-feature img{height:200px;width:100%;object-fit:cover;margin-bottom:18px}
    .faq-list{max-width:850px}.faq-item{border-top:1px solid var(--line)}.faq-item:last-child{border-bottom:1px solid var(--line)}.faq-q{width:100%;display:flex;justify-content:space-between;text-align:left;background:none;border:0;padding:20px 0;font-weight:800}.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease}.faq-item.open .faq-a{max-height:180px}.faq-a p{padding:0 35px 20px 0;margin:0}.faq-q span{font-size:22px;color:var(--orange);transition:var(--ease)}.faq-item.open .faq-q span{transform:rotate(45deg)}
    .delivery{background:#e6e6df}.delivery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.delivery-item{padding:22px;border-top:2px solid var(--ink);border-right:1px solid #babdb5}.delivery-item strong{display:block;color:var(--orange);font-size:13px;margin-bottom:10px}
    .cta-section{background:var(--orange);color:#fff}.cta-section p{color:#ffe5d8;max-width:620px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:25px}.form-grid input,.form-grid select,.form-grid textarea{width:100%;border:1px solid rgba(255,255,255,.5);background:rgba(255,255,255,.12);color:#fff;padding:12px;border-radius:7px}.form-grid input::placeholder,.form-grid textarea::placeholder{color:#ffe3d8}.form-grid select{color:#fff}.form-grid option{color:var(--ink)}.form-grid textarea{min-height:110px;grid-column:span 2}.form-grid button{background:var(--dark);border:1px solid var(--dark);color:#fff;padding:12px 22px;border-radius:7px;font-weight:800;width:max-content}.form-grid button:hover{background:#fff;color:var(--ink)}.form-note{font-size:12px;margin-top:10px;color:#ffe3d8}
    footer{background:#171918;color:#b9c0b8;padding:55px 0 25px}.footer-grid{display:grid;grid-template-columns:1.3fr .7fr .9fr;gap:45px;padding-bottom:35px;border-bottom:1px solid #3d423e}.footer-logo{color:#fff;font-size:21px;font-weight:900}.footer-grid h3{font-size:14px;color:#fff}.footer-grid a{display:block;font-size:13px;margin:7px 0}.footer-grid a:hover{color:var(--lime)}.copyright{padding-top:22px;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    .fixed-cta{position:fixed;z-index:20;right:24px;bottom:22px;background:var(--dark);color:#fff;border:1px solid #444;padding:12px 17px;border-radius:8px;box-shadow:0 8px 25px rgba(0,0,0,.2);font-weight:700}.fixed-cta:hover{background:var(--orange)}
    @media(max-width:900px){.nav-links{gap:13px}.split,.dark-layout,.news-layout,.reviews{grid-template-columns:1fr;gap:35px}.adv-grid{grid-template-columns:1fr 1fr}.adv-main{grid-row:auto}.steps{grid-template-columns:repeat(3,1fr)}.delivery-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:700px){.container{width:min(calc(100% - 28px),var(--container))}.nav-main{min-height:66px}.nav-links{display:none;position:absolute;left:14px;right:14px;top:66px;background:var(--warm);border:1px solid var(--line);padding:18px;flex-direction:column;align-items:flex-start;box-shadow:var(--shadow)}.nav-links.show{display:flex}.menu-btn{display:block;margin-left:auto}.nav-cta{padding:9px 12px;font-size:13px}.subnav{gap:14px}.subnav span{display:none}main section{padding:62px 0}h1{font-size:43px;letter-spacing:-2px}.hero{min-height:650px}.hero-copy{padding:65px 0}.hero p{font-size:16px}.hero-data{gap:16px;flex-wrap:wrap}.play-btn{right:18px;bottom:28px;width:58px;height:58px}.triad,.products,.stats-grid,.delivery-grid{grid-template-columns:1fr}.triad-item{border-right:0;border-bottom:1px solid var(--line)}.triad-item:last-child{border-bottom:0}.adv-grid{grid-template-columns:1fr}.steps{display:flex;overflow:auto}.step{min-width:190px}.product:first-child img,.product img{height:190px}.form-grid{grid-template-columns:1fr}.form-grid textarea{grid-column:auto}.footer-grid{grid-template-columns:1fr;gap:25px}.fixed-cta{left:14px;right:14px;bottom:14px;text-align:center}.section-head{display:block}.section-head p{margin-top:12px}}

/* roulang page: category2 */
:root{
 --ink:#202322;--muted:#6b716e;--paper:#f5f4ef;--warm:#fffdf8;
 --line:#dcded8;--orange:#e96735;--orange-dark:#bd4821;
 --dark:#202322;--lime:#d7e58a;--radius:16px;--shadow:0 16px 42px rgba(32,35,34,.08);
 --container:1200px;--ease:240ms ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 40px),var(--container));margin:auto}
.topbar{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.94);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:var(--ease)}
.topbar.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(0,0,0,.04)}
.nav-main{min-height:76px;display:flex;align-items:center;gap:28px}
.logo{font-weight:900;letter-spacing:-1px;font-size:20px;white-space:nowrap}
.logo span{color:var(--orange)}
.logo em{font-style:normal;color:var(--orange);font-size:13px;margin-left:4px}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-links a,.subnav a{font-size:14px;color:#4d5350;position:relative}
.nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--orange);transition:var(--ease)}
.nav-links a:hover:after,.nav-links a.active:after{right:0}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-cta,.btn-primary{background:var(--orange);color:white;border:1px solid var(--orange);padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease);display:inline-flex;align-items:center;justify-content:center}
.nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);transform:translateY(-2px)}
.btn-primary:active,.nav-cta:active{transform:translateY(0)}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid #8b908b;padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease)}
.btn-secondary:hover{border-color:var(--ink);background:var(--ink);color:#fff;transform:translateY(-2px)}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(233,103,53,.35);outline-offset:3px}
.menu-btn{display:none;background:none;border:0;font-size:26px}
.subnav{border-top:1px solid var(--line);min-height:36px;display:flex;align-items:center;gap:22px;overflow:auto;white-space:nowrap}
.subnav span{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:1px}
main section{padding:78px 0}
.eyebrow{font-size:12px;letter-spacing:2px;color:var(--orange);font-weight:800;margin-bottom:12px}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(34px,5vw,62px);line-height:1.12;letter-spacing:-2px;margin-bottom:22px}
h2{font-size:clamp(28px,4vw,44px);line-height:1.2;letter-spacing:-1px;margin-bottom:16px}
h3{font-size:20px;line-height:1.35;margin-bottom:10px}
.lead{font-size:18px;color:#555b57;max-width:760px}
.page-intro{padding:72px 0 54px;background:var(--warm);border-bottom:1px solid var(--line)}
.intro-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:end}
.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:28px}
.breadcrumb a:hover{color:var(--orange)}
.intro-note{border-left:3px solid var(--orange);padding:18px 0 18px 24px;color:var(--muted);font-size:15px}
.tag-index{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.tag{border:1px solid var(--line);padding:8px 13px;border-radius:999px;background:var(--paper);font-size:13px;color:#505752;transition:var(--ease)}
.tag:hover{border-color:var(--orange);color:var(--orange);transform:translateY(-2px)}
.section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
.section-head p{max-width:580px;color:var(--muted)}
.list-wrap{border-top:1px solid var(--ink)}
.list-item{display:grid;grid-template-columns:70px 1.1fr 1fr auto;gap:24px;align-items:center;padding:27px 0;border-bottom:1px solid var(--line);transition:var(--ease)}
.list-item:hover{padding-left:12px;padding-right:12px;background:var(--warm)}
.list-no{font-size:22px;color:var(--orange);font-weight:800}
.list-item p{font-size:14px}
.meta{display:flex;gap:8px;flex-wrap:wrap}
.meta span{font-size:12px;background:#e9ebe4;padding:4px 9px;border-radius:4px;color:#5d645f}
.text-link{font-weight:800;font-size:14px;white-space:nowrap}
.text-link:hover{color:var(--orange)}
.scenario{background:var(--dark);color:#fff}
.scenario .lead,.scenario .section-head p{color:#c6cbc4}
.scenario-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:54px;align-items:center}
.scenario-image{height:390px;object-fit:cover;width:100%;filter:grayscale(18%)}
.steps{border-top:1px solid #59605a}
.step{display:grid;grid-template-columns:58px 1fr 100px;gap:18px;padding:20px 0;border-bottom:1px solid #59605a;align-items:center}
.step b{color:var(--lime);font-size:22px}
.step small{color:var(--lime);font-weight:700}
.capability-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.capability-card{background:var(--warm);border:1px solid var(--line);border-radius:12px;padding:25px}
.capability-card dl{display:grid;grid-template-columns:110px 1fr;gap:8px;margin:18px 0 0;font-size:14px}
.capability-card dt{color:var(--muted)}
.capability-card dd{margin:0;font-weight:700}
.case-block{display:grid;grid-template-columns:.75fr 1.25fr;gap:50px;align-items:stretch}
.case-image{width:100%;height:320px;object-fit:cover}
.case-copy{background:var(--warm);border:1px solid var(--line);padding:30px}
.case-line{display:flex;gap:18px;border-top:1px solid var(--line);padding:16px 0}
.case-line strong{color:var(--orange);min-width:54px}
.faq-list{max-width:860px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;justify-content:space-between;text-align:left;background:none;border:0;padding:20px 0;font-weight:800}
.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:180px}
.faq-a p{padding:0 35px 20px 0;margin:0}
.faq-q span{font-size:22px;color:var(--orange);transition:var(--ease)}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.cta-section{background:var(--orange);color:#fff}
.cta-section p{color:#ffe5d8;max-width:650px}
.form-box{background:var(--warm);color:var(--ink);padding:28px;border-radius:12px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:700}
.field input,.field textarea,.field select{border:1px solid var(--line);background:#fff;padding:11px 13px;border-radius:7px;color:var(--ink)}
.field textarea{min-height:105px;resize:vertical}
.form-status{font-size:13px;color:var(--orange-dark);margin-top:10px;display:none}
footer{background:var(--dark);color:#fff;padding:62px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.4fr .8fr 1fr;gap:50px}
.footer-logo{font-weight:900;font-size:20px}
footer p{color:#bfc5be}
footer h3{font-size:14px;color:var(--lime)}
footer a{display:block;color:#c8cec7;font-size:14px;margin:7px 0}
footer a:hover{color:var(--orange)}
.copyright{border-top:1px solid #505650;margin-top:42px;padding-top:18px;display:flex;justify-content:space-between;color:#9da59d;font-size:12px}
@media(max-width:900px){
 .nav-links{gap:12px}.nav-links a{font-size:12px}.nav-main{gap:14px}
 .intro-layout,.scenario-grid,.case-block{grid-template-columns:1fr;gap:28px}
 .list-item{grid-template-columns:45px 1fr;gap:12px}
 .list-item .meta,.list-item .text-link{grid-column:2}
 .capability-grid{grid-template-columns:1fr}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
 .container{width:min(calc(100% - 28px),var(--container))}
 .nav-main{min-height:66px}.logo{font-size:17px}.nav-cta{padding:9px 12px;font-size:13px}
 .menu-btn{display:block}.nav-links{position:absolute;top:66px;left:0;right:0;background:var(--warm);border-bottom:1px solid var(--line);padding:12px 18px;display:none;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}
 .nav-links.open{display:flex}.nav-links a{padding:12px 0;font-size:14px}.nav-links a:after{bottom:4px}
 .subnav{display:none}main section{padding:58px 0}.page-intro{padding:48px 0 40px}
 h1{letter-spacing:-1px}.section-head{display:block}.section-head p{margin-top:12px}
 .step{grid-template-columns:42px 1fr;gap:10px}.step small{grid-column:2}
 .form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}
 .footer-grid{grid-template-columns:1fr;gap:28px}.copyright{display:block}.copyright span{display:block;margin-top:6px}
}

/* roulang page: category1 */
:root{
      --ink:#202322;--muted:#6b716e;--paper:#f5f4ef;--warm:#fffdf8;
      --line:#dcded8;--orange:#e96735;--orange-dark:#bd4821;
      --dark:#202322;--lime:#d7e58a;--radius:16px;
      --shadow:0 16px 42px rgba(32,35,34,.08);--container:1200px;--ease:240ms ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 40px),var(--container));margin:auto}
    .topbar{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.95);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:var(--ease)}
    .topbar.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(0,0,0,.04)}
    .nav-main{min-height:76px;display:flex;align-items:center;gap:28px}
    .logo{font-weight:900;letter-spacing:-1px;font-size:20px;white-space:nowrap}
    .logo span{color:var(--orange)}
    .logo em{font-style:normal;color:var(--orange);font-size:13px;margin-left:5px}
    .nav-links{display:flex;align-items:center;gap:24px;margin-left:auto}
    .nav-links a,.subnav a{font-size:14px;color:#4d5350;position:relative}
    .nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--orange);transition:var(--ease)}
    .nav-links a:hover:after,.nav-links a.active:after{right:0}
    .nav-links a:hover,.nav-links a.active{color:var(--ink)}
    .nav-cta,.btn-primary{background:var(--orange);color:#fff;border:1px solid var(--orange);padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease)}
    .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);transform:translateY(-2px)}
    .btn-primary:active,.nav-cta:active{transform:translateY(0)}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid #8b908b;padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease)}
    .btn-secondary:hover{border-color:var(--ink);background:var(--ink);color:#fff;transform:translateY(-2px)}
    a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(233,103,53,.35);outline-offset:3px}
    .menu-btn{display:none;background:none;border:0;font-size:26px}
    .subnav{border-top:1px solid var(--line);min-height:36px;display:flex;align-items:center;overflow:auto;white-space:nowrap}
    .subnav span{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:1px}
    .subnav a{margin-left:22px}
    main section{padding:78px 0}
    .eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--orange);font-weight:800;margin-bottom:14px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,6vw,76px);line-height:1.08;letter-spacing:-3px;margin-bottom:24px}
    h2{font-size:clamp(28px,4vw,46px);line-height:1.18;letter-spacing:-1.5px;margin-bottom:16px}
    h3{font-size:20px;line-height:1.35;margin-bottom:10px}
    .lead{font-size:18px;color:#555b57;max-width:720px}
    .page-intro{padding:76px 0 54px;background:var(--warm);border-bottom:1px solid var(--line)}
    .crumbs{font-size:13px;color:var(--muted);margin-bottom:34px}
    .crumbs a:hover{color:var(--orange)}
    .intro-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:64px;align-items:end}
    .intro-image{position:relative}
    .intro-image img{height:300px;width:100%;object-fit:cover;border-radius:4px;box-shadow:var(--shadow)}
    .image-note{position:absolute;bottom:18px;left:18px;background:var(--dark);color:#fff;padding:8px 12px;font-size:12px}
    .index-section{padding:26px 0!important;background:var(--warm);border-bottom:1px solid var(--line)}
    .index-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
    .index-row strong{font-size:13px;margin-right:12px}
    .tag{display:inline-flex;padding:7px 13px;border:1px solid var(--line);border-radius:999px;color:#555b57;font-size:13px;background:#fff}
    .tag:hover{border-color:var(--orange);color:var(--orange)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:32px}
    .section-head p{max-width:570px;color:var(--muted)}
    .list-layout{display:grid;grid-template-columns:280px 1fr;gap:58px}
    .side-note{border-top:2px solid var(--ink);padding-top:18px}
    .side-note p{color:var(--muted);font-size:14px}
    .software-list{border-top:1px solid var(--line)}
    .list-item{display:grid;grid-template-columns:60px 1fr 170px;gap:24px;align-items:start;padding:27px 0;border-bottom:1px solid var(--line);transition:var(--ease)}
    .list-item:hover{padding-left:12px;background:rgba(255,253,248,.55)}
    .list-no{font-size:14px;color:var(--orange);font-weight:800}
    .list-item p{font-size:14px;color:var(--muted);margin-bottom:14px}
    .meta{display:flex;flex-wrap:wrap;gap:7px}
    .meta span{font-size:11px;padding:4px 8px;background:#e9ebe5;color:#5c625e;border-radius:4px}
    .detail{font-size:13px;font-weight:800;text-align:right;margin-top:4px}
    .detail:hover{color:var(--orange)}
    .scenario{background:#ebece6}
    .scenario-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:58px;align-items:center}
    .scenario img{height:350px;width:100%;object-fit:cover}
    .steps{border-left:1px solid #aeb3ab}
    .step{position:relative;padding:0 0 30px 34px}
    .step:last-child{padding-bottom:0}
    .step:before{content:"";position:absolute;left:-6px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--orange);border:3px solid #ebece6}
    .step strong{display:block;color:var(--orange);font-size:13px;margin-bottom:5px}
    .step p{color:var(--muted);font-size:14px;margin:0}
    .parameter{background:var(--dark);color:#fff}
    .parameter .lead,.parameter p{color:#c6cbc4}
    .param-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#4a4f4b;margin-top:36px}
    .param-card{background:var(--dark);padding:24px;min-height:150px}
    .param-card b{display:block;color:var(--lime);font-size:27px;margin-bottom:8px}
    .param-card span{font-size:13px;color:#c6cbc4}
    .evidence-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .evidence-card{background:var(--warm);border:1px solid var(--line);padding:28px;border-radius:var(--radius);transition:var(--ease)}
    .evidence-card:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-3px)}
    .evidence-card p{font-size:14px;color:var(--muted)}
    .case-line{border-left:2px solid var(--orange);padding-left:24px}
    .faq-list{max-width:850px}
    .faq-item{border-top:1px solid var(--line)}
    .faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;display:flex;justify-content:space-between;text-align:left;background:none;border:0;padding:20px 0;font-weight:800}
    .faq-q span{font-size:22px;color:var(--orange);transition:var(--ease)}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease}
    .faq-item.open .faq-a{max-height:180px}
    .faq-a p{padding:0 35px 20px 0;margin:0}
    .cta-section{background:var(--orange);color:#fff}
    .cta-section p{color:#ffe5d8;max-width:620px}
    .cta-flex{display:flex;justify-content:space-between;align-items:end;gap:35px}
    .cta-section .btn-secondary{border-color:#fff;color:#fff}
    .cta-section .btn-secondary:hover{background:#fff;color:var(--orange)}
    footer{background:var(--dark);color:#fff;padding:64px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr .8fr 1fr;gap:60px}
    .footer-logo{font-size:20px;font-weight:900}
    footer p{color:#bfc5bd}
    footer h3{font-size:14px;color:var(--lime);margin-bottom:16px}
    footer a{display:block;color:#c8cdc6;font-size:14px;margin:8px 0}
    footer a:hover{color:var(--orange)}
    .copyright{border-top:1px solid #484d49;margin-top:45px;padding-top:18px;display:flex;justify-content:space-between;color:#9ba29b;font-size:12px}
    .fixed-consult{position:fixed;right:22px;bottom:22px;z-index:20;background:var(--orange);color:#fff;padding:13px 18px;border-radius:9px;font-weight:800;box-shadow:0 10px 25px rgba(233,103,53,.28)}
    .fixed-consult:hover{background:var(--orange-dark);transform:translateY(-2px)}
    @media(max-width:1024px){
      .nav-links{gap:13px}.nav-links a{font-size:13px}.intro-grid,.scenario-grid{gap:32px}
      .list-layout{grid-template-columns:220px 1fr;gap:30px}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 28px),var(--container))}
      .nav-main{min-height:68px}.nav-cta{margin-left:auto;padding:9px 12px;font-size:13px}
      .menu-btn{display:block}.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--warm);padding:18px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;gap:16px}
      .nav-links.open{display:flex}.subnav{display:none}.logo{font-size:17px}
      main section{padding:58px 0}.page-intro{padding:52px 0 38px}.intro-grid,.scenario-grid,.list-layout,.evidence-grid{grid-template-columns:1fr}
      h1{letter-spacing:-2px}.intro-image img{height:240px}.section-head,.cta-flex{display:block}
      .section-head p{margin-top:12px}.list-item{grid-template-columns:38px 1fr;gap:15px}.detail{grid-column:2;text-align:left}
      .param-grid{grid-template-columns:repeat(2,1fr)}.scenario img{height:260px}
      .footer-grid{grid-template-columns:1fr;gap:28px}.copyright{display:block}.copyright span{display:block;margin-bottom:7px}
      .fixed-consult{right:14px;bottom:14px;padding:11px 14px;font-size:13px}
    }
    @media(max-width:520px){
      .logo em{display:none}.param-grid{grid-template-columns:1fr 1fr}.param-card{padding:18px;min-height:125px}
      .param-card b{font-size:22px}.lead{font-size:16px}.index-row strong{width:100%}
    }

/* roulang page: category3 */
:root{
 --ink:#202322;--muted:#6b716e;--paper:#f5f4ef;--warm:#fffdf8;
 --line:#dcded8;--orange:#e96735;--orange-dark:#bd4821;
 --dark:#202322;--lime:#d7e58a;--radius:16px;
 --shadow:0 16px 42px rgba(32,35,34,.08);--container:1200px;--ease:240ms ease;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button,input,textarea,select{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 40px),var(--container));margin:auto}
.topbar{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.95);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:var(--ease)}
.topbar.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(0,0,0,.04)}
.nav-main{min-height:76px;display:flex;align-items:center;gap:28px}
.logo{font-weight:900;letter-spacing:-1px;font-size:20px;white-space:nowrap}
.logo span{color:var(--orange)}
.logo em{font-style:normal;color:var(--orange);font-size:14px;margin-left:4px}
.nav-links{display:flex;align-items:center;gap:24px;margin-left:auto}
.nav-links a,.subnav a{font-size:14px;color:#4d5350;position:relative}
.nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--orange);transition:var(--ease)}
.nav-links a:hover:after,.nav-links a.active:after{right:0}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-cta,.btn-primary{display:inline-flex;align-items:center;justify-content:center;background:var(--orange);color:white;border:1px solid var(--orange);padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease)}
.nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);transform:translateY(-2px)}
.nav-cta:active,.btn-primary:active{transform:translateY(0)}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid #8b908b;padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease)}
.btn-secondary:hover{border-color:var(--ink);background:var(--ink);color:#fff;transform:translateY(-2px)}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(233,103,53,.35);outline-offset:3px}
.menu-btn{display:none;background:none;border:0;font-size:26px}
.subnav{border-top:1px solid var(--line);min-height:36px;display:flex;align-items:center;gap:22px;overflow:auto;white-space:nowrap}
.subnav span{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:1px}
main section{padding:78px 0}
.page-intro{padding:72px 0 54px;background:var(--warm);border-bottom:1px solid var(--line)}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:25px}
.crumbs a:hover{color:var(--orange)}
.eyebrow{font-size:12px;letter-spacing:2px;color:var(--orange);font-weight:800;margin-bottom:12px}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(38px,6vw,76px);line-height:1.08;letter-spacing:-3px;margin-bottom:24px}
h2{font-size:clamp(28px,4vw,48px);line-height:1.15;letter-spacing:-1.5px;margin-bottom:18px}
h3{font-size:20px;line-height:1.3;margin-bottom:10px}
.lead{font-size:18px;color:#555b57;max-width:760px}
.index-wrap{display:flex;justify-content:space-between;gap:30px;align-items:flex-end}
.index-tags{display:flex;flex-wrap:wrap;gap:10px;max-width:800px}
.tag,.status{display:inline-flex;align-items:center;border:1px solid var(--line);background:var(--warm);padding:8px 13px;border-radius:999px;font-size:13px;color:#555b57}
.tag:hover{border-color:var(--orange);color:var(--orange)}
.list-section{background:#ebece6}
.list-layout{display:grid;grid-template-columns:260px 1fr;gap:52px}
.side-note{border-top:2px solid var(--ink);padding-top:18px;color:var(--muted);font-size:14px}
.content-list{display:grid;gap:14px}
.list-item{display:grid;grid-template-columns:64px 1fr auto;gap:22px;align-items:start;background:var(--warm);border:1px solid var(--line);padding:25px;border-radius:12px;transition:var(--ease)}
.list-item:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-3px)}
.num{font-size:25px;color:var(--orange);font-weight:800}
.list-item p{font-size:14px;color:var(--muted);margin:8px 0 12px}
.status{font-size:12px;padding:5px 9px;background:#f1f3e1;border-color:#dce4af;color:#68732c;white-space:nowrap}
.detail{font-size:13px;font-weight:700;color:var(--orange);white-space:nowrap}
.detail:hover{text-decoration:underline}
.scenario{background:var(--dark);color:#fff}
.scenario .lead,.scenario p{color:#c6cbc4}
.scenario-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:55px;align-items:center}
.scenario-image{position:relative}
.scenario-image img{width:100%;height:390px;object-fit:cover;filter:grayscale(15%)}
.scenario-image:after{content:"数据回传 · 事件追踪 · 权限审计";position:absolute;left:18px;bottom:18px;padding:8px 12px;background:var(--orange);font-size:12px;color:#fff}
.steps{border-top:1px solid #59605b}
.step{display:flex;gap:22px;padding:20px 0;border-bottom:1px solid #59605b}
.step strong{color:var(--lime);font-size:14px;min-width:38px}
.step h3{font-size:18px;margin-bottom:3px}
.parameter-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.parameter-card{background:var(--warm);border:1px solid var(--line);padding:27px;border-radius:var(--radius)}
.parameter-card ul{list-style:none;padding:0;margin:18px 0 0}
.parameter-card li{padding:10px 0;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.parameter-card li b{float:right;color:var(--ink);font-weight:700}
.case-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:20px}
.case-story{background:var(--warm);border:1px solid var(--line);padding:34px;border-radius:var(--radius)}
.case-story img{height:230px;width:100%;object-fit:cover;margin-bottom:25px}
.case-side{background:#dfe5c5;padding:32px;border-radius:var(--radius)}
.case-side strong{font-size:42px;line-height:1;color:var(--orange)}
.faq-list{max-width:850px}
.faq-item{border-top:1px solid var(--line)}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-q{width:100%;display:flex;justify-content:space-between;text-align:left;background:none;border:0;padding:19px 0;font-weight:800}
.faq-q span{font-size:22px;color:var(--orange);transition:var(--ease)}
.faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease}
.faq-item.open .faq-a{max-height:180px}
.faq-a p{padding:0 35px 20px 0;margin:0;font-size:14px}
.faq-item.open .faq-q span{transform:rotate(45deg)}
.cta-section{background:var(--orange);color:#fff}
.cta-section p{color:#ffe5d8;max-width:650px}
.form-box{background:var(--warm);color:var(--ink);padding:26px;border-radius:14px;box-shadow:var(--shadow)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form-box label{display:block;font-size:13px;font-weight:700;margin-bottom:6px}
.form-box input,.form-box textarea,.form-box select{width:100%;border:1px solid var(--line);background:#fff;padding:11px 12px;border-radius:8px;color:var(--ink)}
.form-box textarea{min-height:100px;resize:vertical}
.full{grid-column:1/-1}
.form-box input:focus,.form-box textarea:focus,.form-box select:focus{border-color:var(--orange);outline:3px solid rgba(233,103,53,.15)}
footer{background:var(--dark);color:#fff;padding:58px 0 22px}
.footer-grid{display:grid;grid-template-columns:1.5fr .8fr 1fr;gap:45px}
.footer-logo{font-weight:900;font-size:21px}
footer p{color:#c6cbc4}
footer h3{font-size:14px;color:var(--lime);margin-bottom:14px}
footer a{display:block;color:#c6cbc4;font-size:14px;margin:7px 0}
footer a:hover{color:var(--orange)}
.copyright{display:flex;justify-content:space-between;border-top:1px solid #505652;margin-top:42px;padding-top:18px;color:#9da49e;font-size:12px}
@media(max-width:900px){
 .nav-links{gap:14px}.nav-cta{padding:9px 12px}.list-layout{grid-template-columns:1fr;gap:28px}.scenario-grid,.case-grid{grid-template-columns:1fr}.scenario-image{order:2}.footer-grid{grid-template-columns:1fr 1fr}.index-wrap{display:block}.index-tags{margin-top:25px}
}
@media(max-width:700px){
 .container{width:min(calc(100% - 28px),var(--container))}
 .nav-main{min-height:66px;gap:12px}.logo{font-size:17px}.nav-links{display:none;position:absolute;left:14px;right:14px;top:66px;background:var(--warm);border:1px solid var(--line);padding:18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:15px}.nav-links.open{display:flex}.nav-links a:after{bottom:-4px}.menu-btn{display:block;margin-left:auto}.nav-cta{font-size:13px;padding:9px 10px}.subnav{display:none}
 main section{padding:58px 0}.page-intro{padding:48px 0 38px}h1{font-size:43px;letter-spacing:-2px}h2{font-size:32px}.lead{font-size:16px}
 .list-item{grid-template-columns:38px 1fr;gap:13px;padding:19px}.list-item .detail{grid-column:2}.status{white-space:normal}.parameter-grid{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}.full{grid-column:auto}.footer-grid{grid-template-columns:1fr;gap:25px}.copyright{display:block}.copyright span{display:block;margin-top:6px}
}

/* roulang page: category4 */
:root{
      --ink:#202322;--muted:#6b716e;--paper:#f5f4ef;--warm:#fffdf8;
      --line:#dcded8;--orange:#e96735;--orange-dark:#bd4821;
      --dark:#202322;--lime:#d7e58a;--radius:16px;
      --shadow:0 16px 42px rgba(32,35,34,.08);--container:1200px;--ease:240ms ease
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 40px),var(--container));margin:auto}
    .topbar{position:sticky;top:0;z-index:30;background:rgba(255,253,248,.95);backdrop-filter:blur(12px);border-bottom:1px solid transparent;transition:var(--ease)}
    .topbar.scrolled{border-color:var(--line);box-shadow:0 4px 18px rgba(0,0,0,.04)}
    .nav-main{min-height:76px;display:flex;align-items:center;gap:28px}
    .logo{font-weight:900;letter-spacing:-1px;font-size:20px;white-space:nowrap}
    .logo span{color:var(--orange)}
    .logo em{font-style:normal;color:var(--orange);font-size:12px;margin-left:5px}
    .nav-links{display:flex;align-items:center;gap:23px;margin-left:auto}
    .nav-links a,.subnav a{font-size:14px;color:#4d5350;position:relative}
    .nav-links a:after{content:"";position:absolute;left:0;right:100%;bottom:-8px;height:2px;background:var(--orange);transition:var(--ease)}
    .nav-links a:hover:after,.nav-links a.active:after{right:0}
    .nav-links a:hover,.nav-links a.active{color:var(--ink)}
    .nav-cta,.btn-primary{background:var(--orange);color:#fff;border:1px solid var(--orange);padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease);display:inline-flex;align-items:center;justify-content:center}
    .nav-cta:hover,.btn-primary:hover{background:var(--orange-dark);border-color:var(--orange-dark);transform:translateY(-2px)}
    .btn-primary:active,.nav-cta:active{transform:translateY(0)}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid #8b908b;padding:11px 18px;border-radius:9px;font-weight:700;transition:var(--ease)}
    .btn-secondary:hover{border-color:var(--ink);background:var(--ink);color:#fff;transform:translateY(-2px)}
    :focus-visible{outline:3px solid var(--lime);outline-offset:3px}
    .menu-btn{display:none;background:none;border:0;font-size:26px}
    .subnav{border-top:1px solid var(--line);min-height:36px;display:flex;align-items:center;overflow:auto;white-space:nowrap}
    .subnav .container{display:flex;align-items:center;gap:22px}
    .subnav span{font-size:12px;color:var(--orange);font-weight:800;letter-spacing:1px}
    main section{padding:76px 0}
    .page-intro{padding:72px 0 50px;background:var(--warm);border-bottom:1px solid var(--line)}
    .eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--orange);font-weight:800;margin-bottom:12px}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:clamp(38px,6vw,72px);line-height:1.08;letter-spacing:-3px;margin-bottom:22px}
    h2{font-size:clamp(28px,4vw,46px);line-height:1.15;letter-spacing:-1.5px;margin-bottom:16px}
    h3{font-size:20px;line-height:1.3}
    .lead{font-size:18px;color:#555b57;max-width:760px}
    .crumb{font-size:13px;color:var(--muted);margin-bottom:34px}
    .crumb a:hover{color:var(--orange)}
    .intro-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:end}
    .intro-note{border-left:3px solid var(--orange);padding:20px 0 20px 24px;color:#555b57}
    .index-bar{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
    .tag{display:inline-flex;padding:7px 12px;border:1px solid var(--line);border-radius:999px;background:var(--paper);font-size:13px;color:#555b57}
    .tag strong{color:var(--orange);margin-right:7px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:30px;margin-bottom:30px}
    .section-head p{max-width:570px;color:var(--muted);margin:0}
    .list-wrap{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .list-item{background:var(--warm);border:1px solid var(--line);padding:26px;border-radius:12px;transition:var(--ease);position:relative}
    .list-item:hover{border-color:var(--orange);box-shadow:var(--shadow);transform:translateY(-3px)}
    .list-num{font-size:13px;color:var(--orange);font-weight:800;letter-spacing:1px}
    .list-item h3{margin:10px 0 9px}
    .list-item p{color:var(--muted);font-size:14px;margin-bottom:17px}
    .meta{display:flex;gap:8px;flex-wrap:wrap}
    .meta span{font-size:12px;background:#eef0e9;padding:4px 8px;border-radius:5px;color:#59605b}
    .more-link{display:inline-block;color:var(--orange);font-weight:700;margin-top:26px;border-bottom:1px solid var(--orange)}
    .scene{background:#ebece5}
    .scene-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:center}
    .scene-image img{width:100%;height:360px;object-fit:cover;border-radius:4px;box-shadow:var(--shadow)}
    .steps{border-top:1px solid #bfc4bb}
    .step{display:grid;grid-template-columns:60px 1fr auto;gap:18px;align-items:center;padding:20px 0;border-bottom:1px solid #bfc4bb}
    .step b{color:var(--orange);font-size:20px}
    .step strong{display:block}
    .step small{color:var(--muted)}
    .status{font-size:12px;background:var(--lime);padding:5px 9px;border-radius:5px;white-space:nowrap}
    .parameter{background:var(--dark);color:#fff}
    .parameter .section-head p{color:#c6cbc4}
    .param-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#4a504b}
    .param-card{background:var(--dark);padding:25px;min-height:160px}
    .param-card span{font-size:12px;color:var(--lime);display:block;margin-bottom:18px}
    .param-card strong{font-size:25px;display:block;margin-bottom:8px}
    .param-card p{color:#c6cbc4;font-size:13px;margin:0}
    .case-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:stretch}
    .case-image img{width:100%;height:350px;object-fit:cover;border-radius:12px}
    .case-copy{background:var(--warm);border:1px solid var(--line);padding:34px;border-radius:12px}
    .case-copy ul{list-style:none;padding:0;margin:25px 0 0}
    .case-copy li{padding:14px 0;border-bottom:1px solid var(--line);color:#555b57}
    .case-copy li b{color:var(--orange);margin-right:10px}
    .faq-list{max-width:880px}
    .faq-item{border-top:1px solid var(--line)}
    .faq-item:last-child{border-bottom:1px solid var(--line)}
    .faq-q{width:100%;display:flex;justify-content:space-between;text-align:left;background:none;border:0;padding:20px 0;font-weight:800}
    .faq-q span{font-size:22px;color:var(--orange);transition:var(--ease)}
    .faq-a{max-height:0;overflow:hidden;color:var(--muted);transition:max-height .3s ease}
    .faq-a p{padding:0 35px 20px 0;margin:0}
    .faq-item.open .faq-a{max-height:180px}
    .faq-item.open .faq-q span{transform:rotate(45deg)}
    .cta-section{background:var(--orange);color:#fff}
    .cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
    .cta-section p{color:#ffe5d8}
    .form-box{background:var(--warm);color:var(--ink);padding:26px;border-radius:12px}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    label{display:block;font-size:13px;font-weight:700;margin-bottom:5px}
    input,textarea,select{width:100%;border:1px solid var(--line);background:#fff;padding:11px 12px;border-radius:7px;color:var(--ink)}
    textarea{min-height:95px;resize:vertical}
    .full{grid-column:1/-1}
    .form-box .btn-primary{margin-top:16px}
    footer{background:var(--dark);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.4fr .8fr .9fr;gap:50px}
    .footer-logo{font-weight:900;font-size:20px}
    footer p{color:#bfc5bd}
    footer h3{font-size:14px;margin-bottom:14px}
    footer a{display:block;color:#bfc5bd;font-size:14px;margin:7px 0}
    footer a:hover{color:var(--lime)}
    .copyright{border-top:1px solid #464c47;margin-top:45px;padding-top:18px;display:flex;justify-content:space-between;color:#8f9790;font-size:12px}
    @media(max-width:1024px){.nav-links{gap:13px}.nav-main{gap:15px}.intro-layout,.scene-grid{gap:35px}.param-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:768px){.container{width:min(calc(100% - 30px),var(--container))}.nav-links{display:none;position:absolute;top:76px;left:0;right:0;background:var(--warm);padding:20px 25px;flex-direction:column;align-items:flex-start;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}.nav-links.open{display:flex}.menu-btn{display:block;margin-left:auto}.nav-cta{padding:9px 12px;font-size:13px}.subnav .container{gap:15px}.intro-layout,.scene-grid,.case-grid,.cta-grid{grid-template-columns:1fr}.page-intro{padding:50px 0 35px}main section{padding:58px 0}h1{letter-spacing:-2px}.list-wrap{grid-template-columns:1fr}.param-grid{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:30px}.copyright{display:block}.copyright span{display:block;margin:5px 0}}
    @media(max-width:520px){.logo{font-size:17px}.nav-cta{display:none}.intro-note{font-size:14px}.section-head{display:block}.section-head p{margin-top:12px}.param-grid{grid-template-columns:1fr}.step{grid-template-columns:38px 1fr}.status{grid-column:2}.form-grid{grid-template-columns:1fr}.full{grid-column:auto}.footer-grid{grid-template-columns:1fr}.scene-image img,.case-image img{height:250px}}