/* roulang page: index */
:root{
  --ink:#211d2b;
  --ink-soft:#4e485b;
  --muted:#817b8c;
  --paper:#fbfaf8;
  --mist:#f1eef3;
  --lavender:#e9e3ed;
  --line:#ddd7e1;
  --teal:#2d8f87;
  --teal-dark:#216e69;
  --coral:#ee755d;
  --coral-dark:#c85a48;
  --white:#fff;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-sm:10px;
  --shadow:0 18px 48px rgba(42,32,49,.09);
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button{font:inherit;border:0;cursor:pointer}
.container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
.site-header{height:78px;background:rgba(251,250,248,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:30px}
.brand{display:flex;align-items:center;gap:12px;white-space:nowrap}
.brand-mark{width:39px;height:39px;border-radius:12px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:21px;letter-spacing:-2px}
.brand-copy{font-weight:800;font-size:17px;line-height:1.15}
.brand-copy small{display:block;color:var(--teal);font-size:10px;letter-spacing:2px;margin-top:3px}
.main-nav{display:flex;align-items:center;gap:5px}
.main-nav a{padding:9px 13px;color:var(--ink-soft);font-size:14px;border-radius:9px;transition:.2s ease}
.main-nav a:hover,.main-nav a:focus{color:var(--ink);background:var(--mist)}
.main-nav a.active{color:var(--coral-dark);background:#fff0ec;font-weight:700}
.menu-toggle{display:none;background:var(--mist);color:var(--ink);padding:8px 12px;border-radius:8px}
.hero{padding:86px 0 76px;background:var(--mist);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;align-items:center;gap:70px}
.eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--teal-dark);font-size:12px;font-weight:800;letter-spacing:1.4px;text-transform:uppercase}
.eyebrow:before,.section-kicker:before{content:"";width:24px;height:2px;background:var(--coral)}
.hero h1{font-size:clamp(40px,5.1vw,70px);line-height:1.15;letter-spacing:-3px;margin:20px 0 22px;max-width:680px}
.hero h1 span{color:var(--coral-dark)}
.hero-lead{max-width:600px;color:var(--ink-soft);font-size:18px;line-height:1.9;margin:0 0 30px}
.actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 20px;border-radius:11px;font-weight:700;font-size:14px;transition:.2s ease;border:1px solid transparent}
.btn-primary{background:var(--coral);color:#fff}
.btn-primary:hover,.btn-primary:focus{background:var(--coral-dark);transform:translateY(-2px)}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover,.btn-teal:focus{background:var(--teal-dark);transform:translateY(-2px)}
.btn-outline{border-color:var(--line);background:var(--white);color:var(--ink)}
.btn-outline:hover,.btn-outline:focus{border-color:var(--teal);color:var(--teal-dark)}
.hero-art{position:relative;min-height:385px}
.art-window{position:absolute;right:0;top:12px;width:min(100%,490px);height:330px;background:var(--white);border:1px solid #d9d2dc;border-radius:22px;box-shadow:var(--shadow);padding:22px;transform:rotate(2deg)}
.window-bar{display:flex;gap:7px;border-bottom:1px solid var(--line);padding-bottom:18px}
.window-bar i{width:8px;height:8px;border-radius:50%;background:#e9a193}
.window-bar i:nth-child(2){background:#b9d7d2}.window-bar i:nth-child(3){background:#d3c5d8}
.art-content{padding:25px 4px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.art-title{grid-column:1/-1;background:var(--ink);color:#fff;border-radius:15px;padding:22px;font-size:22px;font-weight:800}
.art-tile{background:var(--mist);border-radius:14px;padding:18px;color:var(--ink-soft)}
.art-tile strong{display:block;color:var(--ink);font-size:20px;margin-bottom:4px}
.art-badge{position:absolute;left:-35px;bottom:20px;background:var(--teal);color:#fff;border-radius:16px;padding:17px 22px;box-shadow:0 14px 30px rgba(45,143,135,.22);font-weight:700}
.section{padding:92px 0}
.section.alt{background:#f3f0f4}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section h2{font-size:34px;line-height:1.25;letter-spacing:-1px;margin:11px 0 0}
.section-intro{color:var(--muted);max-width:560px;margin:0}
.quick-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr 1fr;gap:12px}
.quick-card{padding:25px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);transition:.2s ease}
.quick-card:first-child{background:var(--ink);color:#fff}
.quick-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow)}
.quick-no{font-size:12px;color:var(--coral);font-weight:800;letter-spacing:1px}
.quick-card h3{font-size:18px;margin:16px 0 5px}.quick-card p{color:var(--muted);font-size:13px;margin:0}.quick-card:first-child p{color:#c7c0cf}
.split{display:grid;grid-template-columns:1fr 1fr;gap:58px;align-items:center}
.portal-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:34px;box-shadow:var(--shadow)}
.portal-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}
.status{font-size:12px;color:var(--teal-dark);background:#e6f3f0;padding:5px 10px;border-radius:30px}
.portal-body{display:grid;grid-template-columns:1fr 1fr;gap:18px;padding-top:24px}
.portal-block{background:var(--mist);border-radius:15px;padding:22px;min-height:118px}.portal-block.large{grid-column:1/-1;background:#f9e9e5}
.portal-block b{font-size:22px;display:block}.portal-block span{font-size:13px;color:var(--muted)}
.check-list{padding:0;margin:25px 0 30px;list-style:none}.check-list li{margin:13px 0;padding-left:28px;position:relative;color:var(--ink-soft)}.check-list li:before{content:"✓";position:absolute;left:0;top:1px;color:var(--teal);font-weight:800}
.download-zone{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:46px;position:relative;overflow:hidden}
.download-zone:after{content:"";position:absolute;width:230px;height:230px;border:1px solid rgba(255,255,255,.15);border-radius:50%;right:-55px;top:-70px}
.download-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:45px;align-items:center}
.device-stack{height:260px;position:relative}.device{position:absolute;border:7px solid #393342;border-radius:25px;background:#f6f2f4;width:145px;height:235px;box-shadow:0 18px 28px rgba(0,0,0,.22)}.device.one{left:50px;top:24px;transform:rotate(-8deg)}.device.two{left:160px;top:1px;transform:rotate(8deg);background:#dcefeb}.device-screen{margin:30px 12px;background:var(--coral);height:105px;border-radius:13px}.device.two .device-screen{background:var(--teal)}
.download-zone h2{margin-top:10px}.download-zone p{color:#cec8d3}.download-meta{display:flex;flex-wrap:wrap;gap:8px;margin:22px 0}.meta-pill{border:1px solid #51485b;color:#e9e3ed;border-radius:30px;padding:5px 11px;font-size:12px}.download-note{font-size:12px;color:#afa7b7!important;margin-top:14px!important}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}.step{padding:28px 22px 10px;border-right:1px solid var(--line)}.step:last-child{border-right:0}.step-num{color:var(--coral);font-weight:900;font-size:14px}.step h3{margin:10px 0 5px;font-size:18px}.step p{color:var(--muted);font-size:14px;margin:0}
.news-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}.featured-news{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:34px;min-height:290px;display:flex;flex-direction:column;justify-content:space-between}.featured-news h3{font-size:27px;line-height:1.45;margin:14px 0}.featured-news p{color:#c9c2cf;margin:0}.news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}.news-item{display:block;padding:19px 23px;border-bottom:1px solid var(--line);transition:.2s}.news-item:last-child{border-bottom:0}.news-item:hover{background:#f7f4f7;padding-left:28px}.news-item h3{font-size:16px;line-height:1.5;margin:6px 0}.news-item p{font-size:13px;color:var(--muted);margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.news-meta{display:flex;gap:10px;color:var(--muted);font-size:12px}.tag{display:inline-block;padding:3px 9px;border-radius:30px;background:#e7f2ef;color:var(--teal-dark);font-size:11px;font-weight:700}.tag.coral{background:#fff0ec;color:var(--coral-dark)}
.empty-state{padding:55px 25px;text-align:center;color:var(--muted);grid-column:1/-1;background:#fff;border:1px dashed var(--line);border-radius:var(--radius-lg)}.empty-icon{font-size:32px;margin-bottom:8px}
.channel{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:38px}.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.channel-card{padding:20px;background:var(--mist);border-radius:14px}.channel-card h3{font-size:17px;margin:0 0 5px}.channel-card p{font-size:13px;color:var(--muted);margin:0}.timeline{border-left:2px solid #d7cddc;padding-left:28px}.timeline-item{position:relative;margin:0 0 25px}.timeline-item:before{content:"";position:absolute;width:10px;height:10px;border-radius:50%;background:var(--coral);left:-34px;top:8px}.timeline-item strong{display:block;font-size:18px}.timeline-item p{color:var(--muted);margin:4px 0 0}.guide-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.guide-card{border:1px solid var(--line);border-radius:15px;background:#fff;padding:23px}.guide-card b{display:block;color:var(--coral);font-size:25px}.guide-card h3{margin:5px 0;font-size:17px}.guide-card p{color:var(--muted);font-size:13px;margin:0}.info-columns{display:grid;grid-template-columns:1fr 1fr;gap:18px}.info-box{padding:28px;border-radius:18px;background:#fff;border:1px solid var(--line)}.info-box h3{margin:0 0 17px}.info-row{display:flex;justify-content:space-between;gap:20px;border-bottom:1px solid var(--line);padding:11px 0;color:var(--ink-soft);font-size:14px}.info-row:last-child{border-bottom:0}.device-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.device-tag{padding:10px 15px;border-radius:10px;background:var(--mist);color:var(--ink-soft);font-size:13px}.notice{border-left:4px solid var(--teal);background:#e8f3f0;padding:20px 24px;border-radius:0 14px 14px 0;color:var(--ink-soft)}.tag-wall{display:flex;flex-wrap:wrap;gap:12px;align-items:center}.tag-wall a{padding:13px 18px;border:1px solid var(--line);border-radius:12px;background:#fff;font-weight:700;transition:.2s}.tag-wall a:hover{border-color:var(--coral);color:var(--coral-dark);transform:translateY(-2px)}
.faq{max-width:850px;margin:0 auto}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin:10px 0;overflow:hidden}.faq summary{cursor:pointer;padding:18px 22px;font-weight:700;list-style:none;display:flex;justify-content:space-between}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"＋";color:var(--coral);font-size:20px}.faq details[open] summary:after{content:"－"}.faq-answer{padding:0 22px 19px;color:var(--muted);font-size:14px}
.final-cta{background:var(--ink);color:#fff;padding:62px 0}.final-inner{display:flex;align-items:center;justify-content:space-between;gap:28px}.final-cta h2{font-size:34px;margin:0 0 9px}.final-cta p{color:#c9c2cf;margin:0}
.site-footer{background:#17141e;color:#fff;padding:48px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:45px;padding-bottom:36px;border-bottom:1px solid #393340}.footer-brand{font-size:19px;font-weight:800}.footer-brand small{display:block;color:#9b938a;letter-spacing:2px;font-size:10px;margin-top:5px}.footer-text{color:#a9a2af;font-size:13px;max-width:330px}.footer-col h3{font-size:14px;margin:0 0 14px}.footer-col a{display:block;color:#aaa2b0;font-size:13px;margin:7px 0;transition:.2s}.footer-col a:hover{color:#fff}.copyright{padding-top:20px;color:#817987;font-size:12px;display:flex;justify-content:space-between;gap:20px}
:focus-visible{outline:3px solid rgba(45,143,135,.35);outline-offset:3px}
@media(max-width:1024px){.hero-grid{gap:35px}.quick-grid{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step{border-bottom:1px solid var(--line)}.guide-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.container{width:min(100% - 36px,var(--container))}.site-header{height:68px}.main-nav{display:none;position:absolute;left:18px;right:18px;top:76px;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);border-radius:14px;padding:9px;box-shadow:var(--shadow)}.main-nav.open{display:flex}.main-nav a{padding:12px 15px}.menu-toggle{display:block}.hero{padding:58px 0}.hero-grid,.split,.download-grid,.news-layout,.info-columns{grid-template-columns:1fr}.hero h1{letter-spacing:-2px}.hero-art{min-height:330px}.art-window{right:2%;width:94%}.art-badge{left:0}.section{padding:65px 0}.section-head{display:block}.section-intro{margin-top:12px}.download-zone{padding:30px}.device-stack{transform:scale(.9);transform-origin:left center}.final-inner{display:block}.final-inner .actions{margin-top:24px}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:8px}}
@media(max-width:520px){.brand-copy{font-size:14px}.brand-mark{width:34px;height:34px}.hero h1{font-size:39px}.hero-lead{font-size:16px}.actions .btn{width:100%}.hero-art{min-height:280px}.art-window{height:260px;padding:15px}.art-title{font-size:17px;padding:15px}.art-tile{padding:12px}.art-badge{font-size:12px;padding:11px 14px}.quick-grid,.channel-grid,.guide-grid{grid-template-columns:1fr}.quick-card{padding:20px}.portal-panel{padding:22px}.portal-body{grid-template-columns:1fr}.portal-block.large{grid-column:auto}.steps{grid-template-columns:1fr}.step{border-right:0}.download-grid{gap:10px}.device-stack{transform:scale(.78);height:220px}.news-item p{white-space:normal}.footer-grid{grid-template-columns:1fr}.final-cta h2{font-size:28px}}

/* roulang page: article */
:root{
      --ink:#211d2b;
      --ink-soft:#4e485b;
      --muted:#817b8c;
      --paper:#fbfaf8;
      --mist:#f1eef3;
      --lavender:#e9e3ed;
      --line:#ddd7e1;
      --teal:#2d8f87;
      --teal-dark:#216e69;
      --coral:#ee755d;
      --coral-dark:#c85a48;
      --white:#fff;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:10px;
      --shadow:0 18px 48px rgba(42,32,49,.09);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(45,143,135,.35);outline-offset:3px}
    img{max-width:100%;display:block}
    button{font:inherit;border:0;cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(251,250,248,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .brand{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .brand-mark{width:39px;height:39px;border-radius:12px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:21px;letter-spacing:-2px}
    .brand-copy{font-weight:800;font-size:17px;line-height:1.15}
    .brand-copy small{display:block;color:var(--teal);font-size:10px;letter-spacing:2px;margin-top:3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;color:var(--ink-soft);font-size:14px;border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus{color:var(--ink);background:var(--mist)}
    .main-nav a.active{color:var(--coral-dark);background:#fff0ec;font-weight:700}
    .menu-toggle{display:none;background:var(--mist);color:var(--ink);padding:8px 12px;border-radius:8px}
    .article-head{padding:72px 0 58px;background:var(--mist);border-bottom:1px solid var(--line)}
    .crumbs{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin-bottom:25px;flex-wrap:wrap}
    .crumbs a{color:var(--teal-dark)}
    .crumbs a:hover{text-decoration:underline}
    .crumb-sep{color:#b0a8b6}
    .article-head h1{font-size:clamp(34px,5vw,58px);line-height:1.25;letter-spacing:-2px;max-width:900px;margin:0 0 23px}
    .article-summary{max-width:820px;color:var(--ink-soft);font-size:18px;line-height:1.9;margin:0 0 26px}
    .meta-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .tag{display:inline-block;padding:3px 10px;border-radius:30px;background:#e7f2ef;color:var(--teal-dark);font-size:11px;font-weight:700}
    .tag.coral{background:#fff0ec;color:var(--coral-dark)}
    .article-layout{display:grid;grid-template-columns:minmax(0,820px) 260px;gap:54px;align-items:start;padding:72px 0 90px}
    .article-content{min-width:0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:clamp(25px,5vw,58px);box-shadow:0 10px 32px rgba(42,32,49,.04)}
    .article-content h2{font-size:29px;line-height:1.4;margin:38px 0 15px}
    .article-content h3{font-size:22px;line-height:1.5;margin:30px 0 12px}
    .article-content p{color:var(--ink-soft);margin:0 0 20px}
    .article-content ul,.article-content ol{color:var(--ink-soft);padding-left:25px;margin:18px 0 25px}
    .article-content li{margin:8px 0}
    .article-content blockquote{margin:28px 0;padding:18px 22px;border-left:4px solid var(--coral);background:#fff5f1;color:var(--ink-soft);border-radius:0 var(--radius-sm) var(--radius-sm) 0}
    .article-content img{border-radius:14px;margin:28px auto}
    .article-content table{width:100%;border-collapse:collapse;margin:25px 0;color:var(--ink-soft);font-size:14px}
    .article-content th,.article-content td{border:1px solid var(--line);padding:11px 13px;text-align:left}
    .article-content th{background:var(--mist);color:var(--ink);font-weight:700}
    .article-content hr{border:0;border-top:1px solid var(--line);margin:35px 0}
    .not-found{padding:55px 20px;text-align:center;color:var(--muted)}
    .not-found strong{display:block;font-size:24px;color:var(--ink);margin-bottom:15px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 20px;border-radius:11px;font-weight:700;font-size:14px;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#fff}
    .btn-primary:hover{background:var(--coral-dark);color:#fff;transform:translateY(-2px)}
    .btn-teal{background:var(--teal);color:#fff}
    .btn-teal:hover{background:var(--teal-dark);color:#fff;transform:translateY(-2px)}
    .btn-outline{border-color:var(--line);background:var(--white);color:var(--ink)}
    .btn-outline:hover{border-color:var(--teal);color:var(--teal-dark)}
    .side-stack{position:sticky;top:106px}
    .side-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);padding:22px;margin-bottom:16px}
    .side-card h2{font-size:17px;margin:0 0 15px}
    .side-card p{font-size:13px;color:var(--muted);margin:0 0 14px}
    .side-list{list-style:none;padding:0;margin:0}
    .side-list li{border-top:1px solid var(--line);padding:11px 0;font-size:13px;color:var(--ink-soft)}
    .side-list li:first-child{border-top:0;padding-top:0}
    .side-list a:hover{color:var(--teal-dark)}
    .article-tools{display:flex;gap:10px;flex-wrap:wrap;margin-top:30px;padding-top:25px;border-top:1px solid var(--line)}
    .related{padding:78px 0;background:var(--mist)}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}
    .section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--teal-dark);font-size:12px;font-weight:800;letter-spacing:1.4px}
    .section-kicker:before{content:"";width:24px;height:2px;background:var(--coral)}
    .section h2{font-size:32px;line-height:1.3;margin:10px 0 0}
    .section-intro{color:var(--muted);max-width:560px;margin:0}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .related-card{display:block;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);padding:23px;transition:.2s ease}
    .related-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow)}
    .related-card h3{font-size:17px;line-height:1.5;margin:13px 0 7px}
    .related-card p{font-size:13px;color:var(--muted);margin:0}
    .cta-band{padding:58px 0;background:var(--ink);color:#fff}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta-inner h2{font-size:30px;margin:0 0 8px}
    .cta-inner p{color:#c9c2cf;margin:0}
    .cta-actions{display:flex;gap:10px;flex-wrap:wrap}
    .site-footer{background:#191621;color:#fff;padding:53px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px}
    .footer-brand{font-weight:800;font-size:20px}
    .footer-brand small{display:block;color:#82c4be;font-size:10px;letter-spacing:2px;margin-top:4px}
    .footer-text{color:#aaa2b2;font-size:13px;max-width:360px;margin:15px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h3{font-size:14px;margin:0 0 9px;color:#fff}
    .footer-col a{font-size:13px;color:#aaa2b2;transition:.2s}
    .footer-col a:hover{color:#fff}
    .copyright{display:flex;justify-content:space-between;gap:15px;border-top:1px solid #393340;margin-top:40px;padding-top:19px;color:#88818e;font-size:12px;flex-wrap:wrap}
    @media (max-width:1024px){
      .article-layout{grid-template-columns:minmax(0,1fr) 225px;gap:28px}
      .main-nav a{padding-left:8px;padding-right:8px;font-size:13px}
    }
    @media (max-width:768px){
      .container{width:min(100% - 36px,var(--container))}
      .site-header{height:68px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:68px;left:0;right:0;padding:12px 18px 18px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:0 12px 25px rgba(42,32,49,.08);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .article-head{padding:48px 0 42px}
      .article-head h1{letter-spacing:-1px}
      .article-layout{display:block;padding:43px 0 60px}
      .side-stack{position:static;margin-top:22px}
      .related-grid{grid-template-columns:1fr}
      .cta-inner{display:block}
      .cta-actions{margin-top:23px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media (max-width:520px){
      .brand-copy{font-size:15px}
      .brand-mark{width:35px;height:35px;font-size:19px}
      .article-content{padding:23px 19px}
      .article-content h2{font-size:25px}
      .article-content h3{font-size:20px}
      .article-content table{display:block;overflow-x:auto;white-space:nowrap}
      .cta-inner h2{font-size:25px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:5px}
    }

/* roulang page: category1 */
:root{
      --ink:#211d2b;
      --ink-soft:#4e485b;
      --muted:#817b8c;
      --paper:#fbfaf8;
      --mist:#f1eef3;
      --lavender:#e9e3ed;
      --line:#ddd7e1;
      --teal:#2d8f87;
      --teal-dark:#216e69;
      --coral:#ee755d;
      --coral-dark:#c85a48;
      --white:#fff;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:10px;
      --shadow:0 18px 48px rgba(42,32,49,.09);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(45,143,135,.35);outline-offset:3px}
    img{max-width:100%;display:block}
    button{font:inherit;border:0;cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(251,250,248,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .brand{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .brand-mark{width:39px;height:39px;border-radius:12px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:21px;letter-spacing:-2px}
    .brand-copy{font-weight:800;font-size:17px;line-height:1.15}
    .brand-copy small{display:block;color:var(--teal);font-size:10px;letter-spacing:2px;margin-top:3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;color:var(--ink-soft);font-size:14px;border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus{color:var(--ink);background:var(--mist)}
    .main-nav a.active{color:var(--coral-dark);background:#fff0ec;font-weight:700}
    .menu-toggle{display:none;background:var(--mist);color:var(--ink);padding:8px 12px;border-radius:8px}
    .page-intro{padding:78px 0 62px;background:var(--mist);border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:65px;align-items:end}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--teal-dark);font-size:12px;font-weight:800;letter-spacing:1.4px}
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:2px;background:var(--coral)}
    .page-intro h1{font-size:clamp(38px,5vw,64px);line-height:1.18;letter-spacing:-2.5px;margin:18px 0 18px}
    .page-intro h1 span{color:var(--coral-dark)}
    .intro-text{max-width:670px;color:var(--ink-soft);font-size:18px;margin:0}
    .intro-meta{display:flex;justify-content:flex-end;gap:10px;flex-wrap:wrap}
    .info-chip{padding:9px 14px;border:1px solid var(--line);border-radius:30px;background:rgba(255,255,255,.72);font-size:13px;color:var(--ink-soft)}
    .info-chip strong{color:var(--teal-dark);margin-right:5px}
    .section{padding:78px 0}
    .section.alt{background:#f3f0f4}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}
    .section h2{font-size:32px;line-height:1.25;letter-spacing:-1px;margin:10px 0 0}
    .section-intro{color:var(--muted);max-width:590px;margin:0}
    .topic-strip{display:flex;flex-wrap:wrap;gap:12px}
    .topic-pill{display:flex;align-items:center;gap:10px;padding:15px 18px;border:1px solid var(--line);border-radius:14px;background:var(--white);color:var(--ink-soft);transition:.2s ease}
    .topic-pill:hover{border-color:var(--teal);color:var(--teal-dark);transform:translateY(-3px);box-shadow:var(--shadow)}
    .topic-pill i{width:9px;height:9px;border-radius:50%;background:var(--teal);display:block}
    .topic-pill:nth-child(2n) i{background:var(--coral)}
    .featured-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .featured-card{min-height:205px;padding:24px;background:var(--ink);color:#fff;border-radius:var(--radius-md);display:flex;flex-direction:column;justify-content:space-between;transition:.2s ease}
    .featured-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);background:#2b2536}
    .featured-card h3{font-size:19px;line-height:1.5;margin:15px 0 7px}
    .featured-card p{color:#c9c2cf;font-size:13px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .news-meta{display:flex;align-items:center;gap:10px;color:#aaa1b4;font-size:12px}
    .tag{display:inline-block;padding:3px 9px;border-radius:30px;background:#e7f2ef;color:var(--teal-dark);font-size:11px;font-weight:700}
    .tag.coral{background:#fff0ec;color:var(--coral-dark)}
    .featured-card .tag{background:rgba(45,143,135,.2);color:#9ed4ce}
    .news-layout{display:grid;grid-template-columns:280px 1fr;gap:30px;align-items:start}
    .news-aside{position:sticky;top:108px;padding:25px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md)}
    .news-aside h3{font-size:18px;margin:0 0 17px}
    .aside-line{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--line);font-size:13px;color:var(--ink-soft)}
    .aside-line:last-child{border-bottom:0}
    .aside-line b{color:var(--teal-dark)}
    .news-list{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
    .news-item{display:block;padding:22px 26px;border-bottom:1px solid var(--line);transition:.2s}
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:#f8f5f8;padding-left:31px}
    .news-item h3{font-size:18px;line-height:1.5;margin:8px 0 5px}
    .news-item p{font-size:14px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .news-item .news-meta{color:var(--muted)}
    .more-row{padding:22px;text-align:center;border-top:1px solid var(--line)}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 20px;border-radius:11px;font-weight:700;font-size:14px;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#fff}
    .btn-primary:hover,.btn-primary:focus{background:var(--coral-dark);transform:translateY(-2px)}
    .btn-teal{background:var(--teal);color:#fff}
    .btn-teal:hover,.btn-teal:focus{background:var(--teal-dark);transform:translateY(-2px)}
    .btn-outline{border-color:var(--line);background:var(--white);color:var(--ink)}
    .btn-outline:hover,.btn-outline:focus{border-color:var(--teal);color:var(--teal-dark)}
    .scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .scene-card{padding:25px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md)}
    .scene-no{color:var(--coral);font-weight:800;font-size:13px;letter-spacing:1px}
    .scene-card h3{font-size:19px;margin:12px 0 6px}
    .scene-card p{color:var(--muted);font-size:14px;margin:0}
    .update-band{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 25px;border:1px solid #cfe2df;background:#eef8f5;border-radius:var(--radius-md)}
    .update-band strong{color:var(--teal-dark)}
    .update-band span{color:var(--ink-soft);font-size:14px}
    .entry-panel{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .entry-box{padding:30px;border-radius:var(--radius-lg);background:var(--ink);color:#fff}
    .entry-box.light{background:var(--lavender);color:var(--ink)}
    .entry-box h3{font-size:23px;margin:0 0 8px}
    .entry-box p{font-size:14px;color:#c9c2cf;margin:0 0 22px}
    .entry-box.light p{color:var(--ink-soft)}
    .faq-list{max-width:850px;margin:0 auto;border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;padding:20px 4px;background:transparent;text-align:left;display:flex;justify-content:space-between;gap:20px;color:var(--ink);font-weight:700}
    .faq-question span:last-child{color:var(--teal);font-size:22px;line-height:1;transition:.2s}
    .faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 35px 20px 4px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .site-footer{padding:58px 0 24px;background:var(--ink);color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:55px;padding-bottom:42px}
    .footer-brand{font-size:20px;font-weight:800}
    .footer-brand small{display:block;color:#9ed4ce;font-size:10px;letter-spacing:2px;margin-top:4px}
    .footer-text{max-width:380px;color:#bdb5c5;font-size:14px;margin:15px 0 0}
    .footer-col h3{font-size:14px;margin:2px 0 14px;color:#fff}
    .footer-col a{display:block;color:#bdb5c5;font-size:13px;margin:7px 0;transition:.2s}
    .footer-col a:hover{color:#fff;padding-left:3px}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #403848;padding-top:20px;color:#94899d;font-size:12px}
    .empty-state{padding:56px 25px;text-align:center;color:var(--muted)}
    .empty-icon{width:48px;height:48px;margin:0 auto 12px;border-radius:16px;background:var(--mist);display:grid;place-items:center;color:var(--teal);font-size:23px}
    @media(max-width:1024px){
      .main-nav a{padding:8px 8px;font-size:13px}
      .intro-grid{gap:35px}
      .news-layout{grid-template-columns:230px 1fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .site-header{height:68px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;left:18px;right:18px;top:74px;padding:12px;background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .intro-grid,.news-layout,.entry-panel{grid-template-columns:1fr}
      .page-intro{padding:58px 0 45px}
      .page-intro h1{letter-spacing:-1.5px}
      .intro-meta{justify-content:flex-start;margin-top:25px}
      .section{padding:60px 0}
      .section-head{display:block}
      .section-intro{margin-top:14px}
      .featured-grid,.scene-grid{grid-template-columns:1fr}
      .news-aside{position:static}
      .update-band{display:block}
      .update-band span{display:block;margin-top:7px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:6px}
    }
    @media(max-width:520px){
      .brand-copy{font-size:15px}
      .brand-mark{width:35px;height:35px;font-size:19px}
      .page-intro h1{font-size:38px}
      .news-item{padding:19px}
      .news-item:hover{padding-left:22px}
      .featured-card{min-height:180px}
    }

/* roulang page: category2 */
:root{
      --ink:#211d2b;
      --ink-soft:#4e485b;
      --muted:#817b8c;
      --paper:#fbfaf8;
      --mist:#f1eef3;
      --lavender:#e9e3ed;
      --line:#ddd7e1;
      --teal:#2d8f87;
      --teal-dark:#216e69;
      --coral:#ee755d;
      --coral-dark:#c85a48;
      --white:#fff;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:10px;
      --shadow:0 18px 48px rgba(42,32,49,.09);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit;border:0;cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(251,250,248,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .brand{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .brand-mark{width:39px;height:39px;border-radius:12px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:21px;letter-spacing:-2px}
    .brand-copy{font-weight:800;font-size:17px;line-height:1.15}
    .brand-copy small{display:block;color:var(--teal);font-size:10px;letter-spacing:2px;margin-top:3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;color:var(--ink-soft);font-size:14px;border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus{color:var(--ink);background:var(--mist)}
    .main-nav a.active{color:var(--coral-dark);background:#fff0ec;font-weight:700}
    .menu-toggle{display:none;background:var(--mist);color:var(--ink);padding:8px 12px;border-radius:8px}
    .page-intro{padding:74px 0 64px;background:var(--mist);border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:60px;align-items:end}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--teal-dark);font-size:12px;font-weight:800;letter-spacing:1.4px}
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:2px;background:var(--coral)}
    .page-intro h1{font-size:clamp(36px,5vw,64px);line-height:1.18;letter-spacing:-2px;margin:18px 0 18px}
    .page-intro h1 span{color:var(--coral-dark)}
    .intro-text{max-width:700px;color:var(--ink-soft);font-size:18px;margin:0}
    .intro-note{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);padding:24px}
    .intro-note strong{display:block;font-size:20px;margin-bottom:8px}
    .intro-note p{color:var(--muted);font-size:13px;margin:0}
    .section{padding:82px 0}
    .section.alt{background:#f3f0f4}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:30px}
    .section h2{font-size:34px;line-height:1.25;letter-spacing:-1px;margin:11px 0 0}
    .section-intro{color:var(--muted);max-width:580px;margin:0}
    .guide-path{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .path-card{position:relative;padding:25px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);transition:.2s ease}
    .path-card:hover{transform:translateY(-4px);border-color:var(--teal);box-shadow:var(--shadow)}
    .path-number{color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .path-card h3{font-size:18px;margin:17px 0 7px}
    .path-card p{color:var(--muted);font-size:13px;margin:0}
    .guide-panel{display:grid;grid-template-columns:.9fr 1.1fr;gap:20px}
    .entry-card{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:35px;min-height:300px;display:flex;flex-direction:column;justify-content:space-between}
    .entry-card h3{font-size:29px;line-height:1.35;margin:12px 0}
    .entry-card p{color:#c9c2cf;margin:0}
    .entry-symbol{width:56px;height:56px;border-radius:17px;background:var(--teal);display:grid;place-items:center;font-size:25px;font-weight:800}
    .info-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:31px}
    .info-card h3{font-size:22px;margin:0 0 18px}
    .info-list{list-style:none;padding:0;margin:0}
    .info-list li{display:flex;justify-content:space-between;gap:20px;padding:14px 0;border-bottom:1px solid var(--line);color:var(--ink-soft)}
    .info-list li:last-child{border-bottom:0}
    .info-list b{color:var(--ink);font-size:14px}
    .info-list span{color:var(--muted);font-size:13px;text-align:right}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 20px;border-radius:11px;font-weight:700;font-size:14px;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#fff}
    .btn-primary:hover,.btn-primary:focus{background:var(--coral-dark);transform:translateY(-2px)}
    .btn-teal{background:var(--teal);color:#fff}
    .btn-teal:hover,.btn-teal:focus{background:var(--teal-dark);transform:translateY(-2px)}
    .btn-outline{border-color:var(--line);background:var(--white);color:var(--ink)}
    .btn-outline:hover,.btn-outline:focus{border-color:var(--teal);color:var(--teal-dark)}
    .outline-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .outline-card{padding:23px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);transition:.2s ease}
    .outline-card:hover{border-color:var(--coral);box-shadow:var(--shadow)}
    .outline-card .tag{margin-bottom:13px}
    .outline-card h3{font-size:18px;line-height:1.45;margin:0 0 8px}
    .outline-card p{color:var(--muted);font-size:13px;margin:0 0 16px}
    .outline-card time{color:var(--teal-dark);font-size:12px}
    .tag{display:inline-block;padding:3px 9px;border-radius:30px;background:#e7f2ef;color:var(--teal-dark);font-size:11px;font-weight:700}
    .tag.coral{background:#fff0ec;color:var(--coral-dark)}
    .device-wrap{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:stretch}
    .device-card{background:var(--lavender);border-radius:var(--radius-lg);padding:26px;min-height:240px}
    .device-card h3{font-size:20px;margin:0 0 9px}
    .device-card p{color:var(--ink-soft);font-size:14px;margin:0 0 20px}
    .device-bar{height:9px;border-radius:10px;background:var(--white);margin:12px 0}
    .device-bar.short{width:62%}
    .device-labels{display:flex;flex-wrap:wrap;gap:8px;margin-top:25px}
    .device-label{padding:5px 10px;border:1px solid rgba(33,110,105,.25);border-radius:30px;color:var(--teal-dark);font-size:12px;background:rgba(255,255,255,.48)}
    .trouble-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
    .trouble-item{background:var(--white);padding:23px 26px;min-height:130px}
    .trouble-item strong{display:block;color:var(--coral-dark);font-size:15px;margin-bottom:7px}
    .trouble-item p{color:var(--ink-soft);font-size:14px;margin:0}
    .download-strip{background:var(--ink);color:#fff;border-radius:var(--radius-lg);padding:34px 38px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .download-strip h2{font-size:28px;margin:0 0 7px}
    .download-strip p{color:#c9c2cf;margin:0}
    .faq-list{max-width:850px;margin:0 auto;border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:20px 0;background:transparent;color:var(--ink);text-align:left;font-weight:700}
    .faq-question span:last-child{font-size:24px;color:var(--teal);transition:.2s}
    .faq-answer{display:none;color:var(--muted);font-size:14px;padding:0 44px 20px 0}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg);color:var(--coral)}
    .site-footer{background:var(--ink);color:#fff;padding:62px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px;padding-bottom:45px}
    .footer-brand{font-size:20px;font-weight:800}
    .footer-brand small{display:block;color:var(--teal);font-size:10px;letter-spacing:2px;margin-top:4px}
    .footer-text{color:#c9c2cf;max-width:350px;font-size:14px;margin:16px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h3{font-size:14px;margin:0 0 10px;color:#fff}
    .footer-col a{color:#c9c2cf;font-size:13px;transition:.2s}
    .footer-col a:hover{color:var(--coral)}
    .copyright{border-top:1px solid #403849;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#948b9e;font-size:12px}
    :focus-visible{outline:3px solid rgba(45,143,135,.35);outline-offset:3px}
    @media(max-width:1024px){
      .main-nav a{padding-left:8px;padding-right:8px}
      .intro-grid{gap:30px}
      .guide-path{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(100% - 36px,var(--container))}
      .site-header{height:70px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;left:18px;right:18px;top:78px;padding:12px;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}
      .main-nav a{padding:12px 14px}
      .intro-grid,.guide-panel,.device-wrap,.trouble-grid{grid-template-columns:1fr}
      .page-intro{padding:55px 0 48px}
      .section{padding:62px 0}
      .section-head{display:block}
      .section-intro{margin-top:12px}
      .outline-grid{grid-template-columns:1fr}
      .download-strip{display:block;padding:28px}
      .download-strip .btn{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .copyright{display:block}
      .copyright span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .brand-copy{font-size:15px}
      .brand-mark{width:35px;height:35px;font-size:18px}
      .guide-path{grid-template-columns:1fr}
      .info-list li{display:block}
      .info-list span{display:block;text-align:left;margin-top:3px}
      .entry-card,.info-card{padding:25px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
      .page-intro h1{letter-spacing:-1px}
    }

/* roulang page: category3 */
:root{
      --ink:#211d2b;
      --ink-soft:#4e485b;
      --muted:#817b8c;
      --paper:#fbfaf8;
      --mist:#f1eef3;
      --lavender:#e9e3ed;
      --line:#ddd7e1;
      --teal:#2d8f87;
      --teal-dark:#216e69;
      --coral:#ee755d;
      --coral-dark:#c85a48;
      --white:#fff;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:10px;
      --shadow:0 18px 48px rgba(42,32,49,.09);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",Arial,sans-serif;font-size:16px;line-height:1.75}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit;border:0;cursor:pointer}
    .container{width:min(var(--container),calc(100% - 48px));margin:0 auto}
    .site-header{height:78px;background:rgba(251,250,248,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:30px}
    .brand{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .brand-mark{width:39px;height:39px;border-radius:12px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800;font-size:21px;letter-spacing:-2px}
    .brand-copy{font-weight:800;font-size:17px;line-height:1.15}
    .brand-copy small{display:block;color:var(--teal);font-size:10px;letter-spacing:2px;margin-top:3px}
    .main-nav{display:flex;align-items:center;gap:5px}
    .main-nav a{padding:9px 13px;color:var(--ink-soft);font-size:14px;border-radius:9px;transition:.2s ease}
    .main-nav a:hover,.main-nav a:focus{color:var(--ink);background:var(--mist)}
    .main-nav a.active{color:var(--coral-dark);background:#fff0ec;font-weight:700}
    .menu-toggle{display:none;background:var(--mist);color:var(--ink);padding:8px 12px;border-radius:8px}
    .page-intro{padding:78px 0 70px;background:var(--mist);border-bottom:1px solid var(--line)}
    .intro-layout{display:grid;grid-template-columns:1.25fr .75fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--teal-dark);font-size:12px;font-weight:800;letter-spacing:1.2px}
    .eyebrow:before,.section-kicker:before{content:"";width:24px;height:2px;background:var(--coral)}
    h1{font-size:clamp(38px,5vw,64px);line-height:1.2;letter-spacing:-2px;margin:18px 0 20px}
    .intro-copy{max-width:720px;color:var(--ink-soft);font-size:18px;margin:0}
    .intro-note{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);padding:22px;box-shadow:0 10px 30px rgba(42,32,49,.05)}
    .intro-note strong{display:block;font-size:18px;margin-bottom:7px}
    .intro-note span{display:block;color:var(--muted);font-size:13px}
    .section{padding:78px 0}
    .section.alt{background:#f3f0f4}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}
    .section h2{font-size:32px;line-height:1.3;letter-spacing:-1px;margin:10px 0 0}
    .section-intro{color:var(--muted);max-width:570px;margin:0}
    .tag-row{display:flex;flex-wrap:wrap;gap:12px}
    .tag{display:inline-block;padding:8px 14px;border-radius:30px;background:#e7f2ef;color:var(--teal-dark);font-size:13px;font-weight:700;border:1px solid #d3e8e3}
    .tag.coral{background:#fff0ec;color:var(--coral-dark);border-color:#f7d7cf}
    .tag.dark{background:var(--ink);color:#fff;border-color:var(--ink)}
    .highlight-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .highlight{background:var(--ink);color:#fff;border-radius:var(--radius-md);padding:24px;min-height:180px;display:flex;flex-direction:column;justify-content:space-between;transition:.2s ease}
    .highlight:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .highlight .tag{align-self:flex-start;background:#3b3446;color:#cde8e4;border:0}
    .highlight h3{font-size:19px;line-height:1.45;margin:18px 0 5px}
    .highlight p{color:#c9c2cf;font-size:13px;margin:0}
    .highlight time{color:#bcb2c6;font-size:12px}
    .content-layout{display:grid;grid-template-columns:1fr 1.45fr;gap:22px;align-items:start}
    .list-feature{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;min-height:360px}
    .list-feature h3{font-size:24px;line-height:1.45;margin:15px 0}
    .list-feature p{color:var(--muted);margin:0 0 22px}
    .list-wrap{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
    .news-item{display:block;padding:20px 24px;border-bottom:1px solid var(--line);transition:.2s ease}
    .news-item:last-child{border-bottom:0}
    .news-item:hover{background:#f8f5f8;padding-left:29px}
    .news-meta{display:flex;gap:10px;align-items:center;color:var(--muted);font-size:12px;flex-wrap:wrap}
    .news-item h3{font-size:17px;line-height:1.5;margin:7px 0 4px}
    .news-item p{color:var(--muted);font-size:13px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .empty-state{padding:55px 24px;text-align:center;color:var(--muted)}
    .empty-icon{width:52px;height:52px;margin:0 auto 13px;border-radius:17px;background:var(--mist);display:grid;place-items:center;color:var(--teal);font-size:24px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:45px;padding:10px 20px;border-radius:11px;font-weight:700;font-size:14px;transition:.2s ease;border:1px solid transparent}
    .btn-primary{background:var(--coral);color:#fff}
    .btn-primary:hover,.btn-primary:focus{background:var(--coral-dark);transform:translateY(-2px);color:#fff}
    .btn-teal{background:var(--teal);color:#fff}
    .btn-teal:hover,.btn-teal:focus{background:var(--teal-dark);transform:translateY(-2px);color:#fff}
    .btn-outline{border-color:var(--line);background:var(--white);color:var(--ink)}
    .btn-outline:hover,.btn-outline:focus{border-color:var(--teal);color:var(--teal-dark)}
    .more-link{display:inline-flex;color:var(--coral-dark);font-size:14px;font-weight:700;margin-top:20px}
    .scenario-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .scenario{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md);padding:23px;transition:.2s ease}
    .scenario:hover{border-color:var(--teal);transform:translateY(-3px)}
    .scenario-number{color:var(--coral);font-size:13px;font-weight:800;letter-spacing:1px}
    .scenario h3{font-size:18px;margin:14px 0 6px}
    .scenario p{color:var(--muted);font-size:13px;margin:0}
    .update-band{display:flex;justify-content:space-between;align-items:center;gap:25px;padding:23px 28px;background:var(--lavender);border-radius:var(--radius-md);border-left:4px solid var(--teal)}
    .update-band strong{font-size:18px}
    .update-band p{color:var(--muted);font-size:13px;margin:4px 0 0}
    .entry-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .entry-card{padding:26px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-md)}
    .entry-card h3{font-size:20px;margin:0 0 7px}
    .entry-card p{color:var(--muted);font-size:14px;margin:0 0 20px}
    .faq-list{max-width:850px;margin:0 auto}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:10px;overflow:hidden}
    .faq-question{width:100%;display:flex;justify-content:space-between;align-items:center;text-align:left;background:#fff;color:var(--ink);padding:18px 21px;font-weight:700}
    .faq-question span:last-child{color:var(--teal);font-size:21px;transition:.2s}
    .faq-answer{display:none;padding:0 21px 18px;color:var(--muted);font-size:14px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .cta-band{padding:45px;background:var(--ink);color:#fff;border-radius:var(--radius-lg);display:flex;justify-content:space-between;align-items:center;gap:28px}
    .cta-band h2{margin:0 0 8px;font-size:30px}
    .cta-band p{margin:0;color:#c9c2cf}
    .site-footer{background:var(--ink);color:#fff;padding:58px 0 25px;border-top:1px solid #393142}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:45px}
    .footer-brand{font-size:20px;font-weight:800}
    .footer-brand small{display:block;color:#9bd0ca;font-size:10px;letter-spacing:2px;margin-top:4px}
    .footer-text{color:#c9c2cf;font-size:13px;max-width:350px;margin:17px 0 0}
    .footer-col h3{font-size:14px;margin:0 0 14px}
    .footer-col a{display:block;color:#c9c2cf;font-size:13px;margin:8px 0;transition:.2s}
    .footer-col a:hover{color:#fff;padding-left:3px}
    .copyright{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #393142;margin-top:42px;padding-top:19px;color:#9f96aa;font-size:12px}
    :focus-visible{outline:3px solid rgba(45,143,135,.35);outline-offset:3px}
    @media(max-width:1024px){
      .intro-layout{gap:35px}
      .main-nav a{padding:8px 8px;font-size:13px}
      .content-layout{grid-template-columns:1fr 1.2fr}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 36px))}
      .site-header{height:70px}
      .menu-toggle{display:block}
      .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:15px 18px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
      .main-nav.is-open{display:flex}
      .main-nav a{padding:12px 14px}
      .intro-layout,.content-layout,.entry-grid{grid-template-columns:1fr}
      .page-intro{padding:58px 0 52px}
      h1{letter-spacing:-1px}
      .section{padding:58px 0}
      .section-head{display:block}
      .section-intro{margin-top:12px}
      .highlight-strip,.scenario-grid{grid-template-columns:1fr}
      .highlight{min-height:150px}
      .list-feature{min-height:auto}
      .update-band,.cta-band{display:block}
      .update-band .btn,.cta-band .btn{margin-top:18px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .copyright{display:block}
      .copyright span{display:block;margin-top:7px}
    }
    @media(max-width:520px){
      .brand-copy{font-size:15px}
      .brand-mark{width:35px;height:35px;font-size:19px}
      .intro-copy{font-size:16px}
      .section h2{font-size:27px}
      .tag-row{gap:8px}
      .tag{font-size:12px;padding:7px 11px}
      .news-item{padding:17px}
      .news-item:hover{padding-left:20px}
      .cta-band{padding:30px 22px}
      .cta-band h2{font-size:25px}
    }