/* roulang page: index */
:root{
  --ink:#172322;
  --ink-soft:#3d4c49;
  --muted:#71807c;
  --paper:#f7f7f2;
  --white:#fff;
  --line:#dfe6e1;
  --teal:#1f8a78;
  --teal-dark:#146557;
  --teal-pale:#e2f1ec;
  --amber:#e99b58;
  --dark:#172322;
  --radius:16px;
  --shadow:0 14px 36px rgba(24,48,43,.08);
  --max:1220px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{height:82px;background:rgba(247,247,242,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:11px;min-width:275px}
.brand-mark{width:35px;height:35px;background:var(--teal);color:#fff;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:17px}
.brand-text{line-height:1.25;font-weight:750;letter-spacing:-.4px}
.brand-text small{display:block;color:var(--teal);font-weight:600;font-size:11px;margin-top:3px}
.nav-links{display:flex;align-items:center;gap:5px}
.nav-links a{padding:10px 13px;color:var(--ink-soft);border-radius:9px;font-size:14px;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--teal-dark);background:var(--teal-pale)}
.nav-action,.btn-primary{background:var(--teal);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s;border:1px solid var(--teal)}
.nav-action:hover,.btn-primary:hover{background:var(--teal-dark);border-color:var(--teal-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(31,138,120,.2)}
.menu-toggle{display:none;background:none;border:0;font-size:24px;color:var(--ink)}
.hero{padding:92px 0 86px;background:#eef3ed;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1.04fr .96fr;gap:70px;align-items:center}
.eyebrow,.section-kicker{color:var(--teal-dark);font-weight:750;font-size:13px;letter-spacing:1px;margin-bottom:17px}
.hero h1{font-size:clamp(35px,4.5vw,64px);line-height:1.13;letter-spacing:-2.2px;max-width:650px;margin-bottom:22px}
.hero h1 em{font-style:normal;color:var(--teal)}
.hero-lead{font-size:18px;color:var(--ink-soft);max-width:610px;line-height:1.9}
.hero-actions{display:flex;gap:12px;margin-top:31px;flex-wrap:wrap}
.btn-outline{padding:12px 20px;border:1px solid #adc1b9;border-radius:10px;background:transparent;color:var(--ink);font-weight:700;display:inline-flex;align-items:center;justify-content:center;transition:.2s}
.btn-outline:hover{background:#fff;border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px)}
.hero-note{display:flex;gap:22px;margin-top:34px;color:var(--muted);font-size:13px}
.hero-note strong{display:block;color:var(--ink);font-size:15px}
.screen-stage{position:relative;min-height:390px}
.screen-main{position:absolute;right:30px;top:16px;width:355px;height:360px;background:#fff;border:1px solid #d6e2dc;border-radius:21px;padding:24px;box-shadow:var(--shadow);transform:rotate(2deg)}
.screen-top{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line);padding-bottom:18px}
.screen-top b{font-size:19px}.status-dot{width:9px;height:9px;border-radius:50%;background:#65bd8c;display:inline-block;margin-right:5px}
.screen-feature{background:var(--dark);height:115px;border-radius:13px;margin:22px 0 16px;padding:18px;color:#fff;position:relative;overflow:hidden}
.screen-feature:after{content:"";position:absolute;width:130px;height:130px;border:22px solid #2c8b78;border-radius:50%;right:-25px;bottom:-65px}
.screen-feature small{color:#a9cec2}.screen-feature strong{font-size:24px;display:block;margin-top:7px}
.screen-bars{display:grid;gap:11px}.screen-bars span{height:15px;background:#e9efeb;border-radius:5px;display:block}.screen-bars span:nth-child(2){width:75%}.screen-bars span:nth-child(3){width:88%}
.floating-card{position:absolute;left:6px;bottom:27px;background:var(--amber);color:#fff;border-radius:14px;padding:17px 19px;width:180px;box-shadow:0 12px 24px rgba(144,89,44,.18);transform:rotate(-4deg)}
.floating-card b{display:block;font-size:27px;line-height:1.2}
.section{padding:86px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:32px}.section-head h2{font-size:clamp(26px,3vw,39px);line-height:1.25;letter-spacing:-1px}.section-head p{max-width:520px;color:var(--muted)}
.quick-strip{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 5px 18px rgba(24,48,43,.04)}
.quick-item{padding:23px 25px;border-right:1px solid var(--line);transition:.2s}.quick-item:last-child{border:0}.quick-item:hover{background:var(--teal-pale)}
.quick-icon{color:var(--teal);font-size:22px;font-weight:800}.quick-item b{display:block;margin:6px 0 3px}.quick-item small{color:var(--muted)}
.news-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}
.news-feature,.news-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.news-feature{padding:32px;min-height:285px;display:flex;flex-direction:column;justify-content:space-between}
.news-feature .tag{align-self:flex-start}.news-feature h3{font-size:28px;line-height:1.35;max-width:590px;margin:18px 0 10px}.news-feature p{color:var(--muted);max-width:620px}
.news-list{padding:10px 24px}.news-row{display:block;padding:19px 0;border-bottom:1px solid var(--line);transition:.2s}.news-row:last-child{border:0}.news-row:hover h4{color:var(--teal)}.news-row h4{font-size:16px;transition:.2s}.news-meta{display:flex;gap:12px;color:var(--muted);font-size:12px;margin-top:5px}.tag{display:inline-block;border-radius:6px;padding:3px 8px;background:var(--teal-pale);color:var(--teal-dark);font-size:12px;font-weight:700}
.split-showcase{display:grid;grid-template-columns:.86fr 1.14fr;gap:46px;align-items:center}.showcase-copy h2{font-size:38px;line-height:1.25;margin-bottom:15px}.showcase-copy>p{color:var(--muted);margin-bottom:27px}.feature-list{display:grid;gap:18px}.feature-list li{list-style:none;display:flex;gap:15px}.number{width:30px;height:30px;border-radius:50%;background:var(--teal);color:#fff;display:grid;place-items:center;flex:none;font-weight:700}.feature-list b{display:block}.feature-list span{color:var(--muted);font-size:13px}
.interface-board{background:#dcebe4;border-radius:22px;padding:26px;display:grid;grid-template-columns:1fr 1fr;gap:14px;min-height:310px}.board-block{background:#fff;border-radius:13px;padding:19px}.board-block.dark{background:var(--dark);color:#fff;grid-row:span 2}.board-block h4{font-size:18px;margin:12px 0}.board-block p{color:var(--muted);font-size:13px}.board-block.dark p{color:#bfd1ca}.mini-lines{display:grid;gap:8px;margin-top:20px}.mini-lines i{display:block;height:9px;border-radius:5px;background:#dce8e2}.dark .mini-lines i{background:#3d5a53}.hall{background:var(--dark);color:#fff}.hall .section-head p{color:#b8cbc4}.hall-grid{display:grid;grid-template-columns:1.3fr .7fr .7fr;grid-template-rows:150px 150px;gap:14px}.game-card{padding:22px;border-radius:14px;background:#2a3d39;position:relative;overflow:hidden;transition:.2s}.game-card:hover{transform:translateY(-4px);background:#31504a}.game-card.large{grid-row:span 2;background:#2f7163}.game-card:after{content:"";position:absolute;width:145px;height:145px;border:25px solid rgba(255,255,255,.08);border-radius:50%;right:-38px;bottom:-55px}.game-card h3{font-size:21px;position:relative;z-index:1}.game-card small{color:#c1d5ce;position:relative;z-index:1}.game-card .tag{margin-top:26px;background:rgba(255,255,255,.15);color:#fff;position:relative;z-index:1}
.rank-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center}.rank-title h2{font-size:37px;line-height:1.3;margin-bottom:15px}.rank-title p{color:var(--muted)}.rank-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 25px}.rank-item{display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:14px;padding:18px 0;border-bottom:1px solid var(--line)}.rank-item:last-child{border:0}.rank-no{font-size:22px;color:var(--amber);font-weight:800}.rank-item small{color:var(--muted);display:block}.heat{width:85px;height:6px;background:#e3ebe6;border-radius:5px;overflow:hidden}.heat i{display:block;height:100%;background:var(--teal);border-radius:5px}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.timeline-item{border-top:3px solid var(--teal);padding:19px 20px;background:#fff;border:1px solid var(--line);border-top-color:var(--teal);border-radius:4px 4px 13px 13px}.timeline-item time{color:var(--teal-dark);font-weight:750;font-size:13px}.timeline-item h3{font-size:18px;margin:9px 0 6px}.timeline-item p{font-size:13px;color:var(--muted)}
.download-panel{background:var(--dark);color:#fff;border-radius:22px;padding:50px;display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}.download-panel h2{font-size:39px;line-height:1.3;margin-bottom:13px}.download-panel p{color:#c0d0ca}.device-row{display:flex;gap:14px;margin-top:25px;flex-wrap:wrap}.device{border:1px solid #526862;padding:12px 16px;border-radius:9px;color:#e3eee9}.qr-box{background:#fff;color:var(--ink);border-radius:15px;padding:25px;display:flex;align-items:center;gap:24px}.qr{width:112px;height:112px;background:repeating-linear-gradient(45deg,#172322 0 4px,#fff 4px 8px);border:7px solid #fff;box-shadow:0 0 0 1px #dce5df}.qr-box small{color:var(--muted);display:block;margin-top:8px}
.update-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px}.update-item{display:flex;gap:20px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:13px}.version{font-weight:800;color:var(--teal);font-size:17px;min-width:60px}.update-item h3{font-size:17px}.update-item p{font-size:13px;color:var(--muted);margin-top:3px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);background:#fff;border-radius:var(--radius);overflow:hidden}.step{padding:25px;border-right:1px solid var(--line);position:relative}.step:last-child{border:0}.step strong{font-size:31px;color:var(--teal);display:block;line-height:1}.step h3{font-size:17px;margin:13px 0 5px}.step p{font-size:13px;color:var(--muted)}
.dual-guide{display:grid;grid-template-columns:1fr 1fr;gap:18px}.guide-card{padding:30px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.guide-card.ios{background:#eaf3ef}.guide-card h3{font-size:23px;margin-bottom:8px}.guide-card p{color:var(--muted);margin-bottom:18px}.guide-points{display:grid;gap:10px}.guide-points li{list-style:none;padding-left:24px;position:relative}.guide-points li:before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:800}
.security{background:#e7f0eb}.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center}.security h2{font-size:36px;line-height:1.3;margin-bottom:13px}.security p{color:var(--muted)}.security-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.security-list div{background:#fff;border:1px solid var(--line);padding:18px;border-radius:11px}.security-list b{display:block;margin-bottom:4px}.security-list span{font-size:13px;color:var(--muted)}
.faq{display:grid;grid-template-columns:.7fr 1.3fr;gap:60px}.faq h2{font-size:36px;line-height:1.3}.faq-intro{color:var(--muted);margin-top:12px}.faq-list details{background:#fff;border:1px solid var(--line);border-radius:11px;margin-bottom:10px;padding:16px 20px}.faq-list summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:22px}.faq-list summary:after{content:"＋";position:absolute;right:0;color:var(--teal)}.faq-list details[open] summary:after{content:"−"}.faq-list details p{color:var(--muted);font-size:14px;padding-top:10px}
.cta{padding:70px 0;background:var(--dark);color:#fff}.cta-wrap{display:flex;align-items:center;justify-content:space-between;gap:30px}.cta h2{font-size:35px;line-height:1.3}.cta p{color:#b9ccc5;margin-top:8px}.footer{background:#101b1a;color:#d7e3de;padding:48px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:35px}.footer .brand{color:#fff;align-items:flex-start}.footer .brand-text small{color:#8fd0bc}.footer h4{color:#fff;margin-bottom:13px}.footer a{display:block;color:#9fb2ab;font-size:13px;margin:7px 0;transition:.2s}.footer a:hover{color:#8fd0bc}.footer-desc{color:#9fb2ab;font-size:13px;max-width:280px;margin-top:15px}.copyright{border-top:1px solid #2b3a36;padding-top:18px;color:#81948d;font-size:12px;display:flex;justify-content:space-between;gap:20px}
:focus-visible{outline:3px solid rgba(31,138,120,.35);outline-offset:3px}
@media(max-width:1024px){.nav-links a{padding:9px 8px}.brand{min-width:235px}.hero-grid{gap:35px}.container{width:min(var(--max),calc(100% - 36px))}.screen-main{right:0}.split-showcase,.rank-layout{gap:30px}}
@media(max-width:768px){.site-header{height:72px}.nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 20px;flex-direction:column;align-items:stretch}.nav-links.open{display:flex}.nav-links a{text-align:center}.nav-action{display:none}.menu-toggle{display:block}.hero{padding:58px 0}.hero-grid,.news-layout,.split-showcase,.rank-layout,.download-panel,.security-grid,.faq{grid-template-columns:1fr}.hero h1{font-size:42px}.screen-stage{min-height:345px;margin-top:15px}.screen-main{width:320px}.quick-strip{grid-template-columns:1fr 1fr}.quick-item:nth-child(2){border-right:0}.quick-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.timeline,.steps{grid-template-columns:1fr 1fr}.step:nth-child(2){border-right:0}.step:nth-child(-n+2){border-bottom:1px solid var(--line)}.download-panel{padding:34px 25px}.footer-grid{grid-template-columns:1fr 1fr}.cta-wrap{align-items:flex-start;flex-direction:column}}
@media(max-width:520px){body{font-size:14px}.container{width:calc(100% - 30px)}.brand{min-width:0}.brand-text{font-size:13px}.brand-mark{width:31px;height:31px}.hero h1{font-size:35px;letter-spacing:-1.3px}.hero-lead{font-size:16px}.hero-note{gap:12px}.section{padding:58px 0}.section-head{display:block}.section-head h2{font-size:29px;margin-bottom:9px}.interface-board{padding:15px;min-height:280px}.hall-grid{grid-template-columns:1fr 1fr;grid-template-rows:145px 145px}.game-card.large{grid-column:span 2;grid-row:auto}.game-card{padding:17px}.rank-title h2,.security h2,.faq h2,.download-panel h2{font-size:29px}.timeline,.update-grid,.dual-guide,.security-list{grid-template-columns:1fr}.steps{grid-template-columns:1fr}.step{border-right:0!important;border-bottom:1px solid var(--line)}.step:last-child{border-bottom:0}.qr-box{padding:17px;gap:14px}.qr{width:85px;height:85px}.footer-grid{grid-template-columns:1fr;gap:25px}.copyright{display:block}.copyright span{display:block;margin-top:7px}.hero-actions a,.cta .btn-primary{width:100%}}

/* roulang page: article */
:root{
      --ink:#172322;
      --ink-soft:#3d4c49;
      --muted:#71807c;
      --paper:#f7f7f2;
      --white:#fff;
      --line:#dfe6e1;
      --teal:#1f8a78;
      --teal-dark:#146557;
      --teal-pale:#e2f1ec;
      --amber:#e99b58;
      --dark:#172322;
      --radius:16px;
      --shadow:0 14px 36px rgba(24,48,43,.08);
      --max:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(31,138,120,.35);outline-offset:3px}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:82px;background:rgba(247,247,242,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:275px}
    .brand-mark{width:35px;height:35px;background:var(--teal);color:#fff;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:17px}
    .brand-text{line-height:1.25;font-weight:750;letter-spacing:-.4px}
    .brand-text small{display:block;color:var(--teal);font-weight:600;font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;color:var(--ink-soft);border-radius:9px;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--teal-dark);background:var(--teal-pale)}
    .nav-action,.btn-primary{background:var(--teal);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s;border:1px solid var(--teal)}
    .nav-action:hover,.btn-primary:hover{background:var(--teal-dark);border-color:var(--teal-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(31,138,120,.2);color:#fff}
    .menu-toggle{display:none;background:none;border:0;font-size:24px;color:var(--ink)}
    .article-cover{padding:78px 0 62px;background:#eef3ed;border-bottom:1px solid var(--line)}
    .article-cover-inner{max-width:880px}
    .eyebrow,.section-kicker{color:var(--teal-dark);font-weight:750;font-size:13px;letter-spacing:1px;margin-bottom:16px}
    .article-cover h1{font-size:clamp(32px,5vw,58px);line-height:1.2;letter-spacing:-1.8px;margin:0 0 22px;overflow-wrap:anywhere}
    .article-summary{font-size:18px;color:var(--ink-soft);max-width:820px;margin:0}
    .article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:28px;color:var(--muted);font-size:13px}
    .meta-item{display:inline-flex;align-items:center;gap:7px}
    .meta-item strong{color:var(--ink-soft);font-weight:650}
    .tag{display:inline-block;border-radius:6px;padding:3px 9px;background:var(--teal-pale);color:var(--teal-dark);font-size:12px;font-weight:700}
    .breadcrumb-bar{padding:20px 0;border-bottom:1px solid var(--line);background:var(--paper)}
    .breadcrumb{margin:0;font-size:13px;color:var(--muted);display:flex;flex-wrap:wrap;gap:8px;align-items:center}
    .breadcrumb a:hover{color:var(--teal-dark)}
    .breadcrumb .current{color:var(--ink-soft);max-width:520px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .article-section{padding:70px 0 88px}
    .article-layout{display:grid;grid-template-columns:minmax(0,820px) 280px;gap:62px;align-items:start}
    .article-body{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(26px,5vw,58px);box-shadow:var(--shadow);min-width:0}
    .article-body h2{font-size:30px;line-height:1.35;margin:1.8em 0 .7em;color:var(--ink)}
    .article-body h3{font-size:22px;line-height:1.45;margin:1.6em 0 .65em}
    .article-body h2:first-child,.article-body h3:first-child{margin-top:0}
    .article-body p{margin:0 0 1.15em;color:var(--ink-soft);font-size:16px;line-height:2}
    .article-body ul,.article-body ol{padding-left:1.5em;margin:1em 0 1.4em;color:var(--ink-soft);line-height:2}
    .article-body li{padding-left:5px;margin:5px 0}
    .article-body blockquote{margin:28px 0;padding:19px 24px;border-left:4px solid var(--teal);background:var(--teal-pale);border-radius:0 10px 10px 0;color:var(--teal-dark)}
    .article-body img{border-radius:12px;margin:28px auto}
    .article-body table{width:100%;border-collapse:collapse;margin:26px 0;display:block;overflow-x:auto}
    .article-body th,.article-body td{border:1px solid var(--line);padding:12px 15px;text-align:left;min-width:130px}
    .article-body th{background:#eef3ed;color:var(--ink)}
    .article-body a{color:var(--teal-dark);text-decoration:underline;text-underline-offset:3px}
    .article-body a:hover{color:var(--amber)}
    .article-side{position:sticky;top:108px}
    .side-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:23px}
    .side-card+.side-card{margin-top:16px}
    .side-card h3{font-size:17px;margin:0 0 14px}
    .side-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.8}
    .side-line{display:flex;justify-content:space-between;gap:12px;padding:11px 0;border-bottom:1px solid var(--line);font-size:13px}
    .side-line:last-child{border:0;padding-bottom:0}
    .side-line span{color:var(--muted)}
    .side-line strong{color:var(--ink-soft);font-weight:650;text-align:right}
    .info-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:14px;overflow:hidden;margin-top:28px}
    .info-cell{background:#fff;padding:22px}
    .info-cell small{display:block;color:var(--muted);font-size:12px;margin-bottom:5px}
    .info-cell strong{font-size:15px}
    .help-panel{margin-top:28px;padding:26px 28px;border-radius:14px;background:var(--dark);color:#fff;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .help-panel h2{font-size:21px;margin:0 0 5px}
    .help-panel p{margin:0;color:#b8cbc4;font-size:14px}
    .btn-outline{padding:11px 18px;border:1px solid #adc1b9;border-radius:10px;background:transparent;color:var(--ink);font-weight:700;display:inline-flex;align-items:center;justify-content:center;transition:.2s}
    .help-panel .btn-outline{border-color:#6c9c8f;color:#fff;white-space:nowrap}
    .help-panel .btn-outline:hover{background:#fff;color:var(--dark);transform:translateY(-2px)}
    .not-found{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:60px 30px;text-align:center;box-shadow:var(--shadow)}
    .not-found h2{font-size:28px;margin:0 0 12px}
    .not-found p{color:var(--muted);margin:0 0 24px}
    .footer{background:var(--dark);color:#fff;padding:58px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:45px}
    .footer .brand-text{color:#fff}
    .footer .brand-text small{color:#91cdbd}
    .footer-desc{color:#a9bbb5;font-size:13px;max-width:280px;margin:18px 0 0}
    .footer h4{font-size:14px;margin:3px 0 16px;color:#e4efea}
    .footer-grid>div:not(:first-child) a{display:block;color:#a9bbb5;font-size:13px;margin:9px 0;transition:.2s}
    .footer-grid>div:not(:first-child) a:hover{color:#fff;transform:translateX(3px)}
    .copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;color:#8fa39c;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    @media(max-width:1024px){
      .nav-links a{padding:9px 8px}
      .nav-action{padding:11px 14px}
      .article-layout{grid-template-columns:minmax(0,1fr) 235px;gap:28px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .site-header{height:72px}
      .brand{min-width:0}
      .brand-text{font-size:14px}
      .brand-mark{width:32px;height:32px}
      .nav-links{display:none;position:absolute;left:16px;right:16px;top:68px;padding:10px;background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px}
      .nav-action{display:none}
      .menu-toggle{display:block}
      .article-cover{padding:52px 0 42px}
      .article-layout{display:block}
      .article-side{position:static;margin-top:25px}
      .info-strip{grid-template-columns:1fr}
      .help-panel{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
    }
    @media(max-width:520px){
      .article-cover h1{font-size:31px;letter-spacing:-1px}
      .article-summary{font-size:16px}
      .article-body{padding:24px 20px}
      .article-body h2{font-size:25px}
      .article-body p{font-size:15px;line-height:1.9}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}
      .copyright span{display:block;margin:5px 0}
    }

/* roulang page: category1 */
:root{
      --ink:#172322;
      --ink-soft:#3d4c49;
      --muted:#71807c;
      --paper:#f7f7f2;
      --white:#fff;
      --line:#dfe6e1;
      --teal:#1f8a78;
      --teal-dark:#146557;
      --teal-pale:#e2f1ec;
      --amber:#e99b58;
      --dark:#172322;
      --radius:16px;
      --shadow:0 14px 36px rgba(24,48,43,.08);
      --max:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button:focus-visible,a:focus-visible{outline:3px solid rgba(31,138,120,.32);outline-offset:3px}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:82px;background:rgba(247,247,242,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:275px}
    .brand-mark{width:35px;height:35px;background:var(--teal);color:#fff;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:17px}
    .brand-text{line-height:1.25;font-weight:750;letter-spacing:-.4px}
    .brand-text small{display:block;color:var(--teal);font-weight:600;font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;color:var(--ink-soft);border-radius:9px;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--teal-dark);background:var(--teal-pale)}
    .nav-action,.btn-primary{background:var(--teal);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s;border:1px solid var(--teal)}
    .nav-action:hover,.btn-primary:hover{background:var(--teal-dark);border-color:var(--teal-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(31,138,120,.2);color:#fff}
    .menu-toggle{display:none;background:none;border:0;font-size:24px;color:var(--ink)}
    .page-intro{padding:76px 0 68px;background:#eef3ed;border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1fr .75fr;gap:80px;align-items:end}
    .eyebrow,.section-kicker{color:var(--teal-dark);font-weight:750;font-size:13px;letter-spacing:1px;margin-bottom:15px}
    h1,h2,h3,h4,p{margin-top:0}
    h1{font-size:clamp(35px,5vw,60px);line-height:1.16;letter-spacing:-2px;margin-bottom:20px}
    h1 em{font-style:normal;color:var(--teal)}
    .intro-lead{font-size:18px;color:var(--ink-soft);max-width:720px;line-height:1.9;margin-bottom:0}
    .intro-note{border-left:3px solid var(--amber);padding:10px 0 10px 22px;color:var(--muted)}
    .intro-note strong{display:block;color:var(--ink);font-size:25px;line-height:1.2;margin-bottom:6px}
    .section{padding:82px 0}
    .section-alt{background:#fff}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:clamp(26px,3vw,39px);line-height:1.25;letter-spacing:-1px;margin-bottom:0}
    .section-head p{max-width:540px;color:var(--muted);margin-bottom:0}
    .tag{display:inline-block;border-radius:6px;padding:3px 9px;background:var(--teal-pale);color:var(--teal-dark);font-size:12px;font-weight:700}
    .feature-news{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .lead-story{background:var(--dark);color:#fff;border-radius:var(--radius);padding:34px;min-height:300px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
    .lead-story:after{content:"";position:absolute;width:210px;height:210px;border:34px solid rgba(92,185,157,.2);border-radius:50%;right:-70px;bottom:-100px}
    .lead-story .tag{background:rgba(226,241,236,.15);color:#b9e2d4;position:relative;z-index:1}
    .lead-story h3{font-size:28px;line-height:1.4;max-width:570px;position:relative;z-index:1}
    .lead-story p{color:#c0d0ca;max-width:600px;position:relative;z-index:1}
    .story-meta{font-size:12px;color:#aac2ba;position:relative;z-index:1}
    .news-directory{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:8px 26px}
    .news-entry{display:grid;grid-template-columns:82px 1fr;gap:17px;padding:18px 0;border-bottom:1px solid var(--line);transition:.2s}
    .news-entry:last-child{border-bottom:0}
    .news-entry:hover h3{color:var(--teal)}
    .news-date{color:var(--teal-dark);font-weight:750;font-size:13px;padding-top:3px}
    .news-entry h3{font-size:17px;margin-bottom:4px;transition:.2s}
    .news-entry p{font-size:13px;color:var(--muted);margin-bottom:6px}
    .meta-line{font-size:12px;color:var(--muted);display:flex;gap:12px;flex-wrap:wrap}
    .timeline{position:relative;display:grid;gap:0;max-width:900px;margin:auto}
    .timeline:before{content:"";position:absolute;left:82px;top:10px;bottom:10px;width:1px;background:#bfd5cc}
    .timeline-item{display:grid;grid-template-columns:165px 1fr;gap:28px;position:relative;padding:0 0 34px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item time{color:var(--teal-dark);font-weight:750;font-size:14px;text-align:right;padding-top:4px}
    .timeline-copy{background:#fff;border:1px solid var(--line);border-radius:13px;padding:20px 23px;position:relative}
    .timeline-copy:before{content:"";position:absolute;left:-34px;top:12px;width:11px;height:11px;background:var(--teal);border:3px solid var(--paper);border-radius:50%;box-shadow:0 0 0 1px var(--teal)}
    .timeline-copy h3{font-size:19px;margin-bottom:6px}
    .timeline-copy p{color:var(--muted);margin-bottom:0}
    .new-products{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .product-strip{background:#fff;border:1px solid var(--line);border-radius:14px;padding:25px;transition:.2s}
    .product-strip:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b7d7ce}
    .product-no{font-size:13px;color:var(--amber);font-weight:800;margin-bottom:18px}
    .product-strip h3{font-size:19px;margin-bottom:8px}
    .product-strip p{color:var(--muted);font-size:14px;margin-bottom:16px}
    .reading-panel{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .info-box{padding:30px;background:#eef3ed;border-radius:var(--radius);border:1px solid #d9e7df}
    .info-box.dark{background:var(--dark);color:#fff;border-color:var(--dark)}
    .info-box h3{font-size:22px;margin-bottom:10px}
    .info-box p{color:var(--muted);margin-bottom:0}
    .dark p{color:#bfd0ca}
    .info-list{list-style:none;padding:0;margin:18px 0 0}
    .info-list li{padding:10px 0;border-top:1px solid rgba(223,230,225,.55);display:flex;justify-content:space-between;gap:15px}
    .info-list span{color:var(--muted)}
    .dark .info-list span{color:#b7cbc3}
    .feedback{background:var(--dark);color:#fff;border-radius:20px;padding:38px 44px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .feedback h2{font-size:28px;margin-bottom:8px}
    .feedback p{color:#bfd0ca;margin-bottom:0}
    .btn-outline{padding:12px 20px;border:1px solid #adc1b9;border-radius:10px;background:transparent;color:var(--ink);font-weight:700;display:inline-flex;align-items:center;justify-content:center;transition:.2s}
    .btn-outline:hover{background:#fff;border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px)}
    .feedback .btn-outline{color:#fff;border-color:#76978e;white-space:nowrap}
    .feedback .btn-outline:hover{color:var(--teal-dark)}
    .footer{background:#14201f;color:#fff;padding:58px 0 22px}
    .footer .brand{color:#fff}
    .footer .brand-text small{color:#8fd0bd}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:42px}
    .footer-desc{color:#a8bbb4;max-width:280px;margin-top:18px}
    .footer h4{font-size:15px;margin-bottom:15px}
    .footer-grid>div:not(:first-child) a{display:block;color:#a8bbb4;font-size:14px;margin:8px 0;transition:.2s}
    .footer-grid>div:not(:first-child) a:hover{color:#8fd0bd;transform:translateX(3px)}
    .copyright{border-top:1px solid #30403d;padding-top:18px;color:#81948e;font-size:12px;display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    @media(max-width:1024px){
      .nav-links{gap:0}.nav-links a{padding:9px 8px}.brand{min-width:235px}
      .intro-grid{gap:40px}.feature-news{grid-template-columns:1fr}.new-products{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 34px))}
      .site-header{height:72px}.nav-wrap{gap:12px}.brand{min-width:0}.brand-text{font-size:13px}.brand-mark{width:32px;height:32px}
      .nav-action{display:none}.menu-toggle{display:block}.nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:var(--paper);padding:12px 17px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}.nav-links a{padding:12px 14px}
      .page-intro{padding:54px 0 48px}.intro-grid{grid-template-columns:1fr;gap:25px}h1{letter-spacing:-1px}
      .section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:12px}
      .lead-story{min-height:270px;padding:27px}.lead-story h3{font-size:23px}
      .news-entry{grid-template-columns:1fr;gap:2px}.news-date{font-size:12px}
      .timeline:before{left:6px}.timeline-item{grid-template-columns:1fr;gap:7px;padding-left:28px}.timeline-item time{text-align:left}
      .timeline-copy:before{left:-28px}.new-products,.reading-panel{grid-template-columns:1fr}
      .feedback{display:block;padding:30px 25px}.feedback .btn-outline{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      .footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}
      .copyright{display:block}.copyright span{display:block;margin-top:7px}
    }

/* roulang page: category2 */
:root{
      --ink:#172322;
      --ink-soft:#3d4c49;
      --muted:#71807c;
      --paper:#f7f7f2;
      --white:#fff;
      --line:#dfe6e1;
      --teal:#1f8a78;
      --teal-dark:#146557;
      --teal-pale:#e2f1ec;
      --amber:#e99b58;
      --dark:#172322;
      --radius:16px;
      --shadow:0 14px 36px rgba(24,48,43,.08);
      --max:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible{outline:3px solid rgba(31,138,120,.35);outline-offset:3px}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:82px;background:rgba(247,247,242,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:275px}
    .brand-mark{width:35px;height:35px;background:var(--teal);color:#fff;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:17px}
    .brand-text{line-height:1.25;font-weight:750;letter-spacing:-.4px}
    .brand-text small{display:block;color:var(--teal);font-weight:600;font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;color:var(--ink-soft);border-radius:9px;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--teal-dark);background:var(--teal-pale)}
    .nav-action,.btn-primary{background:var(--teal);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s;border:1px solid var(--teal)}
    .nav-action:hover,.btn-primary:hover{background:var(--teal-dark);border-color:var(--teal-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(31,138,120,.2)}
    .menu-toggle{display:none;background:none;border:0;font-size:24px;color:var(--ink)}
    .page-intro{padding:76px 0 64px;background:#eef3ed;border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:end}
    .eyebrow,.section-kicker{color:var(--teal-dark);font-weight:750;font-size:13px;letter-spacing:1px;margin-bottom:15px}
    h1,h2,h3,h4,p{margin-top:0}
    h1{font-size:clamp(36px,5vw,62px);line-height:1.15;letter-spacing:-2px;margin-bottom:20px}
    h1 em{font-style:normal;color:var(--teal)}
    .intro-copy{font-size:18px;color:var(--ink-soft);max-width:650px;line-height:1.9;margin-bottom:0}
    .intro-panel{background:var(--dark);border-radius:18px;padding:26px;color:#fff;box-shadow:var(--shadow)}
    .intro-panel strong{display:block;font-size:21px;margin-bottom:13px}
    .intro-panel p{color:#bbcec8;margin-bottom:20px}
    .panel-tags{display:flex;gap:8px;flex-wrap:wrap}
    .panel-tags span,.tag{display:inline-block;border-radius:6px;padding:4px 9px;background:var(--teal-pale);color:var(--teal-dark);font-size:12px;font-weight:700}
    .intro-panel .panel-tags span{background:rgba(255,255,255,.12);color:#d5e8e1}
    .section{padding:82px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:clamp(26px,3vw,39px);line-height:1.25;letter-spacing:-1px;margin-bottom:0}
    .section-head p{max-width:510px;color:var(--muted);margin-bottom:0}
    .game-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:18px}
    .game-feature{min-height:350px;background:var(--dark);border-radius:var(--radius);padding:34px;color:#fff;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between}
    .game-feature:after{content:"";position:absolute;width:280px;height:280px;border:45px solid rgba(73,177,151,.22);border-radius:50%;right:-90px;bottom:-110px}
    .game-feature > *{position:relative;z-index:1}
    .game-feature h3{font-size:31px;line-height:1.3;margin:25px 0 10px}
    .game-feature p{color:#bcd0ca;max-width:420px}
    .game-feature .tag{background:rgba(255,255,255,.13);color:#d4eae3}
    .game-meta{display:flex;gap:18px;color:#bcd0ca;font-size:13px}
    .game-meta b{display:block;color:#fff;font-size:15px}
    .game-list{display:grid;gap:14px}
    .game-row{background:#fff;border:1px solid var(--line);border-radius:14px;padding:22px 24px;display:flex;align-items:center;justify-content:space-between;gap:18px;transition:.2s}
    .game-row:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#bfd8ce}
    .game-row h3{font-size:19px;margin:8px 0 4px}
    .game-row p{color:var(--muted);font-size:13px;margin-bottom:0}
    .arrow{width:35px;height:35px;border-radius:50%;background:var(--teal-pale);color:var(--teal-dark);display:grid;place-items:center;font-size:19px;flex:none}
    .rank-section{background:#fff}
    .rank-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:center}
    .rank-grid h2{font-size:37px;line-height:1.3;margin-bottom:14px}
    .rank-grid p{color:var(--muted);max-width:440px}
    .rank-list{border:1px solid var(--line);border-radius:var(--radius);padding:7px 25px;background:var(--paper)}
    .rank-item{display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:14px;padding:17px 0;border-bottom:1px solid var(--line)}
    .rank-item:last-child{border:0}
    .rank-number{font-size:20px;font-weight:800;color:var(--amber)}
    .rank-item h4{font-size:16px;margin-bottom:2px}
    .rank-item small{color:var(--muted)}
    .heat{width:90px;height:6px;background:#dfe9e4;border-radius:20px;overflow:hidden}
    .heat span{display:block;height:100%;background:var(--teal);border-radius:20px}
    .timeline{position:relative;display:grid;gap:0;max-width:900px;margin:auto}
    .timeline:before{content:"";position:absolute;left:93px;top:15px;bottom:15px;width:1px;background:#c9d9d3}
    .timeline-item{display:grid;grid-template-columns:75px 36px 1fr;gap:18px;align-items:start;padding:0 0 29px;position:relative}
    .timeline-date{font-size:13px;color:var(--muted);padding-top:5px;text-align:right}
    .timeline-dot{width:14px;height:14px;border:4px solid var(--teal);background:var(--paper);border-radius:50%;margin:5px auto;z-index:1}
    .timeline-content{background:#fff;border:1px solid var(--line);border-radius:13px;padding:18px 21px}
    .timeline-content h3{font-size:17px;margin:8px 0 5px}
    .timeline-content p{color:var(--muted);font-size:14px;margin-bottom:0}
    .filter-strip{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:25px}
    .filter-strip span{padding:8px 14px;border:1px solid var(--line);border-radius:30px;color:var(--ink-soft);background:#fff;font-size:13px}
    .filter-strip span.active{background:var(--teal);border-color:var(--teal);color:#fff}
    .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .step{background:#fff;border:1px solid var(--line);border-radius:15px;padding:24px;position:relative}
    .step-num{width:31px;height:31px;border-radius:9px;background:var(--teal-pale);color:var(--teal-dark);display:grid;place-items:center;font-weight:800;margin-bottom:21px}
    .step h3{font-size:18px;margin-bottom:8px}
    .step p{color:var(--muted);font-size:14px;margin-bottom:0}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    details{background:#fff;border:1px solid var(--line);border-radius:13px;padding:18px 21px}
    details[open]{border-color:#acd0c3}
    summary{cursor:pointer;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:16px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";color:var(--teal);font-size:21px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:13px 0 0}
    .cta-section{padding:70px 0}
    .cta-box{background:var(--dark);border-radius:20px;padding:38px 44px;color:#fff;display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta-box h2{font-size:30px;margin-bottom:8px}
    .cta-box p{color:#bbcec8;margin-bottom:0}
    .footer{background:#172322;color:#d8e6e1;padding:58px 0 22px}
    .footer .brand-text{color:#fff}
    .footer .brand-text small{color:#8ecbb9}
    .footer-desc{color:#9bb3ac;max-width:285px;margin-top:19px;font-size:13px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:42px}
    .footer h4{font-size:14px;color:#fff;margin-bottom:15px}
    .footer-grid > div:not(:first-child) a{display:block;color:#9bb3ac;font-size:13px;margin:8px 0;transition:.2s}
    .footer-grid > div:not(:first-child) a:hover{color:#8ed0bf}
    .copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:19px;display:flex;justify-content:space-between;gap:15px;color:#819992;font-size:12px}
    @media(max-width:1024px){
      .nav-links a{padding:9px 8px}
      .brand{min-width:235px}
      .intro-grid,.rank-grid{gap:35px}
      .game-layout{grid-template-columns:1fr}
    }
    @media(max-width:768px){
      .site-header{height:72px}
      .container{width:min(var(--max),calc(100% - 32px))}
      .nav-links,.nav-action{display:none}
      .menu-toggle{display:block}
      .intro-grid,.rank-grid,.faq-grid{grid-template-columns:1fr}
      .page-intro{padding:58px 0 48px}
      .section{padding:60px 0}
      .section-head{display:block}
      .section-head p{margin-top:12px}
      .steps{grid-template-columns:1fr}
      .cta-box{display:block;padding:31px 26px}
      .cta-box .btn-primary{margin-top:22px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid > div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      h1{font-size:36px;letter-spacing:-1.2px}
      .brand{min-width:0}
      .brand-text{font-size:13px}
      .intro-panel{padding:22px}
      .game-feature{min-height:310px;padding:25px}
      .game-feature h3{font-size:26px}
      .rank-grid h2{font-size:30px}
      .timeline:before{left:64px}
      .timeline-item{grid-template-columns:53px 24px 1fr;gap:10px}
      .timeline-content{padding:15px}
      .timeline-date{font-size:11px}
      .game-row{padding:17px}
      .game-row h3{font-size:16px}
      .heat{width:55px}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid > div:first-child{grid-column:auto}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:7px}
    }

/* roulang page: category3 */
:root{
      --ink:#172322;
      --ink-soft:#3d4c49;
      --muted:#71807c;
      --paper:#f7f7f2;
      --white:#fff;
      --line:#dfe6e1;
      --teal:#1f8a78;
      --teal-dark:#146557;
      --teal-pale:#e2f1ec;
      --amber:#e99b58;
      --dark:#172322;
      --radius:16px;
      --shadow:0 14px 36px rgba(24,48,43,.08);
      --max:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:82px;background:rgba(247,247,242,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:26px}
    .brand{display:flex;align-items:center;gap:11px;min-width:275px}
    .brand-mark{width:35px;height:35px;background:var(--teal);color:#fff;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:17px}
    .brand-text{line-height:1.25;font-weight:750;letter-spacing:-.4px}
    .brand-text small{display:block;color:var(--teal);font-weight:600;font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;color:var(--ink-soft);border-radius:9px;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--teal-dark);background:var(--teal-pale)}
    .nav-action,.btn-primary{background:var(--teal);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s;border:1px solid var(--teal)}
    .nav-action:hover,.btn-primary:hover{background:var(--teal-dark);border-color:var(--teal-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(31,138,120,.2)}
    .menu-toggle{display:none;background:none;border:0;font-size:24px;color:var(--ink)}
    .page-intro{padding:74px 0 68px;background:#eef3ed;border-bottom:1px solid var(--line)}
    .intro-grid{display:grid;grid-template-columns:1fr .85fr;align-items:end;gap:80px}
    .eyebrow,.section-kicker{color:var(--teal-dark);font-weight:750;font-size:13px;letter-spacing:1px;margin-bottom:15px}
    h1,h2,h3,h4,p{margin-top:0}
    h1{font-size:clamp(34px,5vw,60px);line-height:1.16;letter-spacing:-2px;margin-bottom:20px}
    h1 em{font-style:normal;color:var(--teal)}
    .intro-lead{font-size:18px;color:var(--ink-soft);max-width:680px;line-height:1.9;margin-bottom:0}
    .intro-aside{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:25px 28px;box-shadow:var(--shadow)}
    .intro-aside strong{display:block;font-size:20px;margin-bottom:8px}
    .intro-aside p{color:var(--muted);margin-bottom:17px}
    .status-line{display:flex;gap:9px;align-items:center;color:var(--teal-dark);font-size:13px;font-weight:700}
    .status-dot{width:9px;height:9px;background:var(--teal);border-radius:50%;box-shadow:0 0 0 5px var(--teal-pale)}
    .section{padding:78px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:30px}
    .section-head h2{font-size:clamp(27px,3vw,40px);line-height:1.25;letter-spacing:-1px;margin-bottom:0}
    .section-head p{max-width:540px;color:var(--muted);margin-bottom:0}
    .download-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .download-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;display:grid;grid-template-columns:1fr 128px;gap:26px;min-height:285px;box-shadow:0 8px 24px rgba(24,48,43,.04);transition:.25s}
    .download-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .download-card.dark{background:var(--dark);color:#fff;border-color:var(--dark)}
    .download-card.dark .muted-text,.download-card.dark .download-meta{color:#afc2bc}
    .system-icon{width:45px;height:45px;border-radius:13px;background:var(--teal-pale);color:var(--teal-dark);display:grid;place-items:center;font-size:20px;font-weight:800;margin-bottom:20px}
    .dark .system-icon{background:#31584f;color:#d8efe8}
    .download-card h3{font-size:26px;margin-bottom:8px}
    .muted-text{color:var(--muted);margin-bottom:18px}
    .download-meta{color:var(--muted);font-size:13px;display:grid;gap:4px;margin-bottom:20px}
    .download-meta b{color:inherit}
    .btn-outline{padding:11px 17px;border:1px solid #adc1b9;border-radius:10px;background:transparent;color:var(--ink);font-weight:700;display:inline-flex;align-items:center;justify-content:center;transition:.2s}
    .btn-outline:hover{background:#fff;border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px)}
    .dark .btn-outline{border-color:#719c90;color:#fff}
    .dark .btn-outline:hover{background:#fff;color:var(--dark)}
    .qr-box{width:118px;height:118px;padding:9px;background:#fff;border-radius:10px;align-self:start;position:relative}
    .qr-pattern{width:100%;height:100%;background:
      linear-gradient(90deg,#172322 10%,transparent 10% 18%,#172322 18% 27%,transparent 27% 38%,#172322 38% 45%,transparent 45% 56%,#172322 56% 66%,transparent 66% 76%,#172322 76% 88%,transparent 88%),
      linear-gradient(#172322 10%,transparent 10% 19%,#172322 19% 29%,transparent 29% 39%,#172322 39% 49%,transparent 49% 59%,#172322 59% 70%,transparent 70% 80%,#172322 80% 91%,transparent 91%);
      opacity:.88}
    .qr-label{text-align:center;color:var(--muted);font-size:11px;margin-top:8px}
    .adapter-section{background:#fff}
    .adapter-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .adapter-item{padding:24px;border-right:1px solid var(--line);min-height:150px}
    .adapter-item:last-child{border-right:0}
    .adapter-item b{display:block;font-size:17px;margin:13px 0 5px}
    .adapter-item span{color:var(--muted);font-size:13px}
    .adapter-symbol{width:34px;height:34px;border-radius:9px;background:var(--teal-pale);color:var(--teal-dark);display:grid;place-items:center;font-weight:800}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;counter-reset:step}
    .step{background:#fff;border:1px solid var(--line);border-radius:14px;padding:25px 22px;position:relative;min-height:190px}
    .step:before{counter-increment:step;content:"0" counter(step);font-size:13px;font-weight:800;color:var(--teal-dark);background:var(--teal-pale);border-radius:7px;padding:5px 8px}
    .step h3{font-size:18px;margin:22px 0 8px}
    .step p{color:var(--muted);font-size:14px;margin-bottom:0}
    .timeline{position:relative;margin-left:12px;padding-left:34px;border-left:2px solid #c8ded6}
    .timeline-item{position:relative;padding:0 0 30px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-item:before{content:"";position:absolute;width:12px;height:12px;background:var(--teal);border:3px solid var(--teal-pale);border-radius:50%;left:-41px;top:7px}
    .timeline-date{color:var(--teal-dark);font-size:13px;font-weight:800}
    .timeline-item h3{font-size:20px;margin:5px 0 5px}
    .timeline-item p{color:var(--muted);margin-bottom:0}
    .version-panel{display:grid;grid-template-columns:.75fr 1.25fr;gap:70px;align-items:start}
    .version-note{background:var(--dark);color:#fff;border-radius:var(--radius);padding:30px}
    .version-note .version-number{font-size:48px;font-weight:800;line-height:1;color:#a9d9cb;margin:12px 0 15px}
    .version-note p{color:#b8cbc4;margin-bottom:0}
    .faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:0 20px}
    .faq-item summary{cursor:pointer;list-style:none;font-weight:700;padding:18px 24px 18px 0;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"＋";position:absolute;right:0;color:var(--teal);font-size:20px}
    .faq-item[open] summary:after{content:"−"}
    .faq-answer{color:var(--muted);font-size:14px;padding:0 0 18px}
    .safety{background:#e2f1ec}
    .safety-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:50px;align-items:center}
    .safety h2{font-size:34px;line-height:1.3;margin-bottom:14px}
    .safety p{color:var(--ink-soft);max-width:650px}
    .safety-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .safety-list div{background:#fff;border:1px solid #cfe1da;border-radius:12px;padding:16px;font-weight:700}
    .safety-list span{display:block;color:var(--muted);font-size:12px;font-weight:400;margin-top:4px}
    .cta{padding:70px 0;background:var(--dark);color:#fff}
    .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
    .cta h2{font-size:34px;margin-bottom:9px}
    .cta p{color:#b8cbc4;margin-bottom:0}
    .footer{padding:58px 0 22px;background:#101a19;color:#d7e3df}
    .footer .brand-text{color:#fff}
    .footer .brand-text small{color:#8bd0bc}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px;padding-bottom:42px}
    .footer-desc{color:#91a7a1;max-width:280px;margin-top:20px}
    .footer h4{font-size:15px;color:#fff;margin:4px 0 14px}
    .footer-grid>div:not(:first-child) a{display:block;color:#91a7a1;font-size:13px;margin:8px 0;transition:.2s}
    .footer-grid>div:not(:first-child) a:hover{color:#8bd0bc}
    .copyright{border-top:1px solid #2a3935;padding-top:20px;display:flex;justify-content:space-between;gap:15px;color:#71857f;font-size:12px}
    :focus-visible{outline:3px solid rgba(31,138,120,.35);outline-offset:3px}
    @media(max-width:1024px){
      .nav-links{gap:0}
      .nav-links a{padding:9px 8px}
      .nav-action{padding:10px 13px}
      .intro-grid,.version-panel,.safety-grid{gap:35px}
      .adapter-item{padding:20px 15px}
    }
    @media(max-width:768px){
      .container{width:min(var(--max),calc(100% - 34px))}
      .site-header{height:70px}
      .brand{min-width:0}
      .brand-text{font-size:13px}
      .brand-mark{width:32px;height:32px}
      .menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--paper);padding:12px 17px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px}
      .nav-action{display:none}
      .page-intro{padding:52px 0 48px}
      .intro-grid,.download-grid,.version-panel,.safety-grid{grid-template-columns:1fr}
      .intro-aside{margin-top:5px}
      .section{padding:58px 0}
      .section-head{display:block}
      .section-head p{margin-top:13px}
      .adapter-grid{grid-template-columns:1fr 1fr}
      .adapter-item:nth-child(2){border-right:0}
      .adapter-item:nth-child(-n+2){border-bottom:1px solid var(--line)}
      .steps{grid-template-columns:1fr 1fr}
      .faq-grid{grid-template-columns:1fr}
      .cta-inner{display:block}
      .cta .btn-primary{margin-top:25px}
      .footer-grid{grid-template-columns:1fr 1fr}
      .footer-grid>div:first-child{grid-column:1/-1}
    }
    @media(max-width:520px){
      h1{font-size:36px;letter-spacing:-1.3px}
      .intro-lead{font-size:16px}
      .download-card{grid-template-columns:1fr;padding:24px}
      .qr-box{width:105px;height:105px}
      .adapter-grid,.steps,.safety-list{grid-template-columns:1fr}
      .adapter-item{border-right:0!important;border-bottom:1px solid var(--line)}
      .adapter-item:last-child{border-bottom:0}
      .step{min-height:0}
      .footer-grid{grid-template-columns:1fr}
      .footer-grid>div:first-child{grid-column:auto}
      .copyright{display:block;line-height:2}
      .copyright span{display:block}
    }

/* roulang page: category4 */
:root{
      --ink:#172322;
      --ink-soft:#3d4c49;
      --muted:#71807c;
      --paper:#f7f7f2;
      --white:#fff;
      --line:#dfe6e1;
      --teal:#1f8a78;
      --teal-dark:#146557;
      --teal-pale:#e2f1ec;
      --amber:#e99b58;
      --amber-pale:#fff0e3;
      --dark:#172322;
      --radius:16px;
      --radius-sm:11px;
      --shadow:0 14px 36px rgba(24,48,43,.08);
      --max:1220px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);line-height:1.7;font-size:15px}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:82px;background:rgba(247,247,242,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:30;backdrop-filter:blur(12px)}
    .nav-wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:28px}
    .brand{display:flex;align-items:center;gap:11px;min-width:275px}
    .brand-mark{width:35px;height:35px;background:var(--teal);color:#fff;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:17px}
    .brand-text{line-height:1.25;font-weight:750;letter-spacing:-.4px}
    .brand-text small{display:block;color:var(--teal);font-weight:600;font-size:11px;margin-top:3px}
    .nav-links{display:flex;align-items:center;gap:5px}
    .nav-links a{padding:10px 13px;color:var(--ink-soft);border-radius:9px;font-size:14px;transition:.2s}
    .nav-links a:hover,.nav-links a.active{color:var(--teal-dark);background:var(--teal-pale)}
    .nav-action,.btn-primary{background:var(--teal);color:#fff;padding:12px 20px;border-radius:10px;font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s;border:1px solid var(--teal)}
    .nav-action:hover,.btn-primary:hover{background:var(--teal-dark);border-color:var(--teal-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(31,138,120,.2)}
    .btn-outline{padding:12px 20px;border:1px solid #adc1b9;border-radius:10px;background:transparent;color:var(--ink);font-weight:700;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:.2s}
    .btn-outline:hover{background:#fff;border-color:var(--teal);color:var(--teal-dark);transform:translateY(-2px)}
    .menu-toggle{display:none;background:none;border:0;font-size:24px;color:var(--ink);padding:7px}
    .menu-toggle:focus-visible,a:focus-visible,button:focus-visible{outline:3px solid rgba(31,138,120,.35);outline-offset:3px}
    .page-intro{padding:62px 0 55px;background:#eef3ed;border-bottom:1px solid var(--line)}
    .breadcrumb{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;margin-bottom:22px}
    .breadcrumb span{color:#a2afa9}
    .intro-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:55px;align-items:end}
    .eyebrow,.section-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--teal-dark);font-weight:750;font-size:13px;letter-spacing:.8px;margin-bottom:14px}
    .eyebrow:before,.section-kicker:before{content:"";width:22px;height:2px;background:var(--teal)}
    h1,h2,h3,h4,p{margin-top:0}
    h1{font-size:clamp(34px,4.2vw,56px);line-height:1.17;letter-spacing:-2px;margin-bottom:18px}
    .intro-lead{max-width:690px;font-size:17px;color:var(--ink-soft);line-height:1.9;margin-bottom:0}
    .intro-panel{background:var(--dark);color:#fff;border-radius:var(--radius);padding:25px 27px;position:relative;overflow:hidden}
    .intro-panel:after{content:"";position:absolute;width:160px;height:160px;border:25px solid rgba(95,192,171,.24);border-radius:50%;right:-52px;bottom:-95px}
    .intro-panel small{position:relative;color:#b7d3ca;display:block;margin-bottom:6px}
    .intro-panel strong{position:relative;display:block;font-size:25px;line-height:1.35;max-width:255px}
    .intro-panel p{position:relative;color:#c9d8d2;font-size:13px;margin:12px 0 0}
    .section{padding:82px 0}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:31px}
    .section-head h2{font-size:clamp(27px,3vw,39px);line-height:1.25;letter-spacing:-1px;margin-bottom:0}
    .section-head p{max-width:515px;color:var(--muted);margin-bottom:0}
    .guide-flow{display:grid;grid-template-columns:repeat(5,1fr);position:relative;gap:13px}
    .guide-flow:before{content:"";position:absolute;height:1px;background:#b9d3ca;left:9%;right:9%;top:47px}
    .flow-item{position:relative;padding:0 8px}
    .flow-number{width:48px;height:48px;background:var(--white);border:1px solid #a9cbc0;border-radius:50%;display:grid;place-items:center;color:var(--teal-dark);font-weight:800;font-size:16px;position:relative;z-index:1;margin-bottom:18px;box-shadow:0 4px 12px rgba(24,48,43,.05)}
    .flow-item h3{font-size:17px;margin-bottom:7px}
    .flow-item p{font-size:13px;color:var(--muted);margin:0}
    .account-area{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .security-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:28px}
    .security-brief{background:var(--dark);border-radius:var(--radius);padding:36px;color:#fff}
    .security-brief .section-kicker{color:#98d6c7}
    .security-brief .section-kicker:before{background:#98d6c7}
    .security-brief h2{font-size:34px;line-height:1.3;margin-bottom:15px}
    .security-brief p{color:#bdd0c9;margin:0}
    .security-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 25px}
    .security-row{display:grid;grid-template-columns:42px 1fr;gap:14px;padding:19px 0;border-bottom:1px solid var(--line)}
    .security-row:last-child{border-bottom:0}
    .security-icon{width:38px;height:38px;border-radius:11px;background:var(--teal-pale);color:var(--teal-dark);display:grid;place-items:center;font-size:18px;font-weight:800}
    .security-row h3{font-size:16px;margin-bottom:2px}
    .security-row p{font-size:13px;color:var(--muted);margin:0}
    .install-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:stretch}
    .steps-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
    .mini-step{display:grid;grid-template-columns:41px 1fr;gap:15px;padding:16px 0;border-bottom:1px solid var(--line)}
    .mini-step:last-child{border-bottom:0;padding-bottom:0}
    .mini-step:first-child{padding-top:0}
    .mini-step b{width:34px;height:34px;background:var(--teal-pale);color:var(--teal-dark);display:grid;place-items:center;border-radius:9px;font-size:13px}
    .mini-step h3{font-size:16px;margin-bottom:3px}
    .mini-step p{font-size:13px;color:var(--muted);margin-bottom:0}
    .notice-box{background:var(--amber-pale);border:1px solid #f4d5b9;border-radius:var(--radius);padding:31px}
    .notice-mark{width:42px;height:42px;border-radius:12px;background:var(--amber);color:#fff;display:grid;place-items:center;font-size:21px;font-weight:800;margin-bottom:18px}
    .notice-box h2{font-size:25px;line-height:1.35;margin-bottom:11px}
    .notice-box p{color:#77563e;font-size:14px;margin-bottom:18px}
    .notice-box ul{margin:0;padding-left:20px;color:#77563e;font-size:13px}
    .notice-box li{margin:7px 0}
    .ios-section{padding-top:0}
    .ios-board{display:grid;grid-template-columns:.78fr 1.22fr;background:#e5efea;border-radius:var(--radius);overflow:hidden}
    .ios-side{padding:39px;background:var(--teal-dark);color:#fff}
    .ios-side h2{font-size:32px;line-height:1.3;margin-bottom:14px}
    .ios-side p{color:#c4dfd7;margin-bottom:25px}
    .system-tag{display:inline-flex;align-items:center;gap:7px;border:1px solid rgba(255,255,255,.28);padding:7px 11px;border-radius:7px;font-size:12px;color:#fff}
    .ios-steps{padding:22px 32px}
    .ios-row{display:grid;grid-template-columns:52px 1fr;gap:17px;align-items:center;padding:19px 0;border-bottom:1px solid #cbdcd5}
    .ios-row:last-child{border-bottom:0}
    .ios-row b{font-size:19px;color:var(--teal-dark)}
    .ios-row h3{font-size:16px;margin-bottom:2px}
    .ios-row p{color:var(--muted);font-size:13px;margin:0}
    .read-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:17px}
    .read-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;transition:.2s}
    .read-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#bed8cf}
    .read-card .card-index{display:block;font-size:12px;font-weight:800;color:var(--teal);margin-bottom:30px}
    .read-card h3{font-size:19px;margin-bottom:10px}
    .read-card p{font-size:13px;color:var(--muted);margin-bottom:0}
    .faq-area{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .faq-grid{display:grid;grid-template-columns:.76fr 1.24fr;gap:58px}
    .faq-intro h2{font-size:35px;line-height:1.3;margin-bottom:14px}
    .faq-intro p{color:var(--muted);margin-bottom:22px}
    .faq-intro .tag{background:var(--amber-pale);color:#9a5b29}
    .faq-list{display:grid;gap:10px}
    .faq-item{border:1px solid var(--line);border-radius:12px;background:var(--paper);overflow:hidden}
    .faq-item summary{padding:17px 48px 17px 19px;list-style:none;font-weight:700;cursor:pointer;position:relative}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{content:"+";position:absolute;right:18px;top:13px;color:var(--teal);font-size:24px;font-weight:400;transition:.2s}
    .faq-item[open] summary{color:var(--teal-dark);background:#f1f7f4}
    .faq-item[open] summary:after{transform:rotate(45deg)}
    .faq-answer{padding:0 19px 18px;color:var(--muted);font-size:14px;background:#f1f7f4}
    .closing{padding:76px 0}
    .closing-box{background:var(--dark);border-radius:20px;padding:46px 52px;display:flex;align-items:center;justify-content:space-between;gap:35px;position:relative;overflow:hidden}
    .closing-box:after{content:"";position:absolute;width:260px;height:260px;border:32px solid rgba(90,181,161,.18);border-radius:50%;right:-76px;top:-150px}
    .closing-copy{position:relative;z-index:1}
    .closing-copy .section-kicker{color:#9dd9cb;margin-bottom:11px}
    .closing-copy .section-kicker:before{background:#9dd9cb}
    .closing-copy h2{color:#fff;font-size:35px;line-height:1.3;margin-bottom:10px}
    .closing-copy p{color:#c2d5cf;margin:0;max-width:650px}
    .closing-actions{position:relative;z-index:1;display:flex;gap:11px;flex-wrap:wrap}
    .closing .btn-outline{color:#fff;border-color:#7da99d}
    .closing .btn-outline:hover{background:#28443e;color:#fff;border-color:#9ac8bb}
    .footer{background:#12201e;color:#d4e0dc;padding:58px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr 1fr;gap:35px;padding-bottom:43px}
    .footer .brand{color:#fff;min-width:0}
    .footer .brand-mark{background:var(--teal)}
    .footer .brand-text small{color:#9dd9cb}
    .footer-desc{color:#9db4ad;max-width:300px;font-size:13px;margin:18px 0 0}
    .footer h4{color:#fff;font-size:14px;margin:3px 0 14px}
    .footer-grid a:not(.brand){display:block;color:#aebfba;font-size:13px;margin:8px 0;transition:.2s}
    .footer-grid a:not(.brand):hover{color:#9dd9cb;transform:translateX(2px)}
    .copyright{border-top:1px solid rgba(214,231,224,.15);padding-top:18px;display:flex;justify-content:space-between;gap:16px;color:#8fa7a0;font-size:12px}
    @media (max-width:1024px){
      .nav-wrap{gap:14px}
      .brand{min-width:240px}
      .nav-links a{padding:9px 8px}
      .nav-action{padding:10px 13px;font-size:13px}
      .intro-grid,.security-layout{gap:30px}
      .guide-flow{grid-template-columns:repeat(5,1fr)}
      .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
      .footer-grid>div:first-child{grid-column:span 3}
    }
    @media (max-width:768px){
      .container{width:min(var(--max),calc(100% - 32px))}
      .site-header{height:70px}
      .brand{min-width:0}
      .brand-text{font-size:13px}
      .brand-text small{font-size:10px}
      .nav-action{display:none}
      .menu-toggle{display:block}
      .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 16px 16px;box-shadow:0 12px 25px rgba(24,48,43,.08);flex-direction:column;align-items:stretch}
      .nav-links.open{display:flex}
      .nav-links a{padding:12px 14px}
      .page-intro{padding:46px 0 42px}
      .intro-grid,.security-layout,.install-grid,.faq-grid{grid-template-columns:1fr}
      .intro-panel{max-width:500px}
      .section{padding:58px 0}
      .section-head{display:block;margin-bottom:26px}
      .section-head h2{margin-bottom:12px}
      .guide-flow{grid-template-columns:1fr 1fr;gap:25px 20px}
      .guide-flow:before{display:none}
      .flow-item{padding:0}
      .flow-number{margin-bottom:11px}
      .ios-board{grid-template-columns:1fr}
      .read-grid{grid-template-columns:1fr}
      .faq-grid{gap:29px}
      .closing-box{display:block;padding:37px 30px}
      .closing-actions{margin-top:24px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-grid>div:first-child{grid-column:span 2}
    }
    @media (max-width:520px){
      body{font-size:14px}
      .container{width:calc(100% - 28px)}
      h1{font-size:33px;letter-spacing:-1.4px}
      .intro-lead{font-size:15px}
      .page-intro{padding:36px 0}
      .section{padding:48px 0}
      .section-head h2,.security-brief h2,.ios-side h2,.faq-intro h2,.closing-copy h2{font-size:28px}
      .guide-flow{grid-template-columns:1fr}
      .security-brief,.notice-box,.steps-card{padding:25px 21px}
      .security-list{padding:5px 18px}
      .ios-side{padding:30px 23px}
      .ios-steps{padding:12px 21px}
      .ios-row{grid-template-columns:38px 1fr;gap:11px}
      .closing-box{padding:31px 23px}
      .btn-primary,.btn-outline{width:100%}
      .closing-actions{display:grid}
      .footer-grid{grid-template-columns:1fr;gap:24px}
      .footer-grid>div:first-child{grid-column:auto}
      .copyright{display:block}
      .copyright span{display:block;margin-bottom:5px}
    }