/* roulang page: index */
:root{--ink:#20251f;--muted:#69716a;--green:#356b4d;--green-dark:#244e38;--lime:#d9ee76;--coral:#ef795c;--paper:#f7f8f2;--white:#fff;--line:#e3e8dc;--mint:#eaf1e5;--radius:10px;--shadow:0 12px 32px rgba(35,55,38,.08);--width:1160px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
button{font:inherit}
img{display:block;max-width:100%}
.container{width:min(var(--width),calc(100% - 48px));margin-inline:auto}
.skip{position:absolute;left:-9999px;top:8px;background:#fff;padding:10px;z-index:20}
.skip:focus{left:8px}
.site-header{height:76px;background:rgba(247,248,242,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}
.nav-wrap{height:100%;display:flex;align-items:center;gap:34px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:42px;height:42px;display:grid;place-items:center;background:var(--green);color:#fff;border-radius:8px;font-weight:800;font-size:15px}
.brand-name{font-size:17px;font-weight:750;line-height:1.2}
.brand-name small{display:block;color:var(--muted);font-size:11px;font-weight:500;margin-top:4px}
.nav-links{display:flex;align-items:center;gap:25px;margin-left:auto}
.nav-links a{font-size:13px;color:#4d574e;padding:9px 0;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--green-dark)}
.nav-links a.active{font-weight:700}
.nav-cta,.button{min-height:44px;padding:10px 19px;border-radius:7px;background:var(--green);color:#fff;border:1px solid var(--green);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;transition:transform .2s,background .2s,box-shadow .2s}
.nav-cta:hover,.button:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(36,78,56,.17)}
.button.secondary{background:transparent;color:var(--green-dark);border-color:#b8c9b8}
.button.secondary:hover{background:#edf3e8;box-shadow:none}
a:focus-visible,button:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
.menu-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);cursor:pointer}
.hero{padding:66px 0 58px;overflow:hidden}
.hero-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:12px;font-weight:750;letter-spacing:0}
.eyebrow:before{content:"";width:8px;height:8px;border-radius:2px;background:var(--coral)}
h1,h2,h3,p{margin-top:0}
h1{font-size:clamp(38px,5vw,62px);line-height:1.12;letter-spacing:0;margin:17px 0 15px;max-width:600px}
h1 em{font-style:normal;color:var(--green)}
.hero-sub{font-size:19px;font-weight:650;margin-bottom:8px}
.hero-copy{color:var(--muted);max-width:620px;margin-bottom:24px}
.actions{display:flex;flex-wrap:wrap;gap:11px}
.hero-panel{position:relative;background:#dce9d8;border-radius:10px;min-height:350px;padding:22px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.panel-window{background:#fff;width:100%;max-width:390px;border:1px solid rgba(44,79,53,.12);border-radius:8px;box-shadow:var(--shadow);position:relative;z-index:1}
.window-top{height:42px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:6px;padding:0 14px}
.window-top i{width:7px;height:7px;border-radius:50%;background:#b6c4b2}
.window-title{font-size:11px;color:var(--muted);margin-left:7px}
.window-body{padding:21px}
.window-kicker{font-size:10px;color:var(--green);font-weight:800}
.window-heading{font-size:21px;font-weight:800;margin:4px 0 16px}
.window-row{display:grid;grid-template-columns:1fr 1fr;gap:9px}
.window-item{background:#f5f7f1;border-radius:6px;padding:12px;font-size:12px}
.window-item b{display:block;font-size:14px;margin-bottom:3px}
.window-note{font-size:11px;color:var(--muted);margin:14px 0 0}
.float-label{position:absolute;z-index:2;background:var(--lime);padding:9px 13px;border-radius:6px;font-size:12px;font-weight:750;right:10px;bottom:24px}
.section{padding:68px 0;border-top:1px solid var(--line)}
.section.soft{background:#eef2e9}
.section.dark{background:#244e38;color:#fff;border:0}
.section-head{max-width:680px;margin-bottom:31px}
.section-head h2{font-size:30px;line-height:1.25;margin:8px 0 10px;letter-spacing:0}
.section-head p{color:var(--muted);margin:0}
.dark .section-head p{color:#d6e2d5}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.value-item{padding:24px 25px 24px 0}
.value-item+.value-item{padding-left:25px;border-left:1px solid var(--line)}
.value-num{font-size:12px;color:var(--coral);font-weight:800}
.value-item h3{font-size:18px;margin:7px 0}
.value-item p,.feature p,.guide-item p,.info-row p{font-size:14px;color:var(--muted);margin:0}
.feature-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:center}
.feature-list{border-top:1px solid var(--line)}
.feature{padding:18px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:42px 1fr;gap:14px}
.feature-icon{width:36px;height:36px;display:grid;place-items:center;background:var(--lime);border-radius:7px;color:var(--green-dark);font-weight:800}
.feature h3{font-size:16px;margin:0 0 4px}
.feature-board{background:#f0e9d8;padding:25px;border-radius:8px}
.feature-board-inner{background:#fff;border-radius:7px;padding:22px;border:1px solid #e6dfcf}
.board-label{color:#a35c43;font-size:11px;font-weight:800}
.board-line{height:10px;background:#edf0e8;border-radius:3px;margin-top:13px}
.board-line.short{width:62%}
.board-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:21px}
.board-cell{background:#f6f7f2;padding:13px 10px;border-radius:5px;font-size:11px}
.board-cell strong{display:block;font-size:14px;margin-bottom:4px}
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{border-top:2px solid var(--green);padding-top:17px}
.step:before{counter-increment:step;content:"0" counter(step);font-size:12px;color:var(--coral);font-weight:800}
.step h3{font-size:18px;margin:8px 0}
.step p{font-size:14px;color:var(--muted);margin:0}
.device-band{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center}
.device-list{display:flex;flex-wrap:wrap;gap:9px;margin-top:20px}
.pill{padding:7px 12px;border:1px solid #c9d5c7;border-radius:5px;font-size:12px;color:#425344;background:rgba(255,255,255,.52)}
.device-aside{background:var(--lime);padding:25px 28px;border-radius:8px}
.device-aside strong{font-size:18px;display:block;margin-bottom:8px}
.device-aside p{font-size:14px;margin:0;color:#46513c}
.quote-layout{display:grid;grid-template-columns:1.1fr .9fr;gap:42px;align-items:center}
.quote-large{font-size:25px;line-height:1.55;font-weight:650;max-width:570px}
.quote-small{border-left:2px solid var(--lime);padding:4px 0 4px 20px;color:#d6e2d5;font-size:14px}
.compare{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.compare-col{padding:22px 26px 22px 0}
.compare-col+.compare-col{padding-left:26px;border-left:1px solid var(--line)}
.compare-col h3{font-size:16px;margin-bottom:13px}
.compare-col ul{list-style:none;padding:0;margin:0}
.compare-col li{padding:8px 0;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.compare-col li:before{content:"—";margin-right:9px;color:var(--green)}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.timeline-item{border-left:2px solid #a6bd9f;padding:1px 0 2px 17px}
.timeline-item time{color:var(--green);font-size:11px;font-weight:800}
.timeline-item h3{font-size:16px;margin:5px 0}
.timeline-item p{font-size:13px;color:var(--muted);margin:0}
.topic-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:12px}
.topic{min-height:145px;background:#fff;border:1px solid var(--line);border-radius:7px;padding:19px;transition:transform .2s,box-shadow .2s}
.topic:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.topic span{font-size:11px;color:var(--green);font-weight:800}
.topic h3{font-size:17px;margin:10px 0 5px}
.topic p{font-size:13px;color:var(--muted);margin:0}
.info-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:44px}
.info-list{border-top:1px solid var(--line)}
.info-row{display:grid;grid-template-columns:135px 1fr;gap:18px;padding:16px 0;border-bottom:1px solid var(--line)}
.info-row strong{font-size:14px}
.info-row p{font-size:13px}
.faq-list{border-top:1px solid rgba(255,255,255,.24)}
details{border-bottom:1px solid rgba(255,255,255,.24);padding:16px 0}
summary{cursor:pointer;font-size:15px;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(--lime);font-size:18px}
details[open] summary:after{content:"−"}
details p{color:#d6e2d5;font-size:14px;margin:10px 28px 0 0}
.promise-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.promise{display:flex;align-items:flex-start;gap:11px}
.promise-mark{width:29px;height:29px;border-radius:6px;background:var(--lime);color:var(--green-dark);display:grid;place-items:center;flex:none;font-weight:800;font-size:13px}
.promise strong{font-size:14px;display:block}
.promise span{font-size:12px;color:var(--muted);display:block;margin-top:2px}
.site-footer{padding:48px 0 22px;background:#202b23;color:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:34px}
.footer-brand p{font-size:13px;color:#c3cec3;max-width:260px;margin:14px 0 0}
.footer-title{font-size:13px;font-weight:750;margin-bottom:13px}
.footer-links{display:grid;gap:8px}
.footer-links a{font-size:12px;color:#c3cec3;width:max-content;max-width:100%}
.footer-links a:hover{color:var(--lime)}
.footer-bottom{border-top:1px solid #435046;padding-top:16px;color:#bdc7bd;font-size:11px;display:flex;justify-content:space-between;gap:18px}
.mobile-cta{display:none}
@media(max-width:1024px){.nav-wrap{gap:20px}.nav-links{gap:15px}.nav-links a{font-size:12px}.hero-layout{gap:30px}.footer-grid{gap:20px}}
@media(max-width:768px){.container{width:min(100% - 36px,var(--width))}.site-header{height:68px}.menu-toggle{display:block}.nav-cta{display:none}.nav-links{display:none;position:absolute;top:67px;left:0;right:0;background:var(--paper);padding:12px 22px 18px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:1px}.nav-links.open{display:flex}.nav-links a{padding:11px 4px;font-size:14px;border-bottom:1px solid var(--line)}.hero{padding:44px 0 42px}.hero-layout,.feature-layout,.device-band,.quote-layout,.info-layout{grid-template-columns:1fr;gap:27px}.hero-panel{min-height:290px}.section{padding:50px 0}.section-head h2{font-size:26px}.value-item{padding:20px 14px 20px 0}.value-item+.value-item{padding-left:14px}.value-item p{font-size:13px}.steps{gap:14px}.topic-grid{grid-template-columns:1fr 1fr}.topic:first-child{grid-column:1/-1}.promise-strip{grid-template-columns:1fr 1fr;gap:18px}.footer-grid{grid-template-columns:1fr 1fr}.mobile-cta{display:flex;position:fixed;left:12px;right:12px;bottom:10px;z-index:9;background:#fff;border:1px solid var(--line);border-radius:8px;padding:8px;align-items:center;justify-content:space-between;gap:12px;box-shadow:0 8px 28px rgba(26,42,29,.18)}.mobile-cta span{font-size:12px;font-weight:650;padding-left:8px}.mobile-cta .button{min-height:40px;padding:8px 14px}.site-footer{padding-bottom:85px}}
@media(max-width:520px){.container{width:calc(100% - 32px)}h1{font-size:40px}.hero-sub{font-size:17px}.hero-copy{font-size:14px}.actions .button{flex:1}.hero-panel{padding:15px;min-height:260px}.window-body{padding:15px}.section{padding:43px 0}.section-head{margin-bottom:23px}.section-head h2{font-size:24px}.value-grid{grid-template-columns:1fr}.value-item,.value-item+.value-item{padding:17px 0;border-left:0;border-bottom:1px solid var(--line)}.value-item:last-child{border-bottom:0}.steps{grid-template-columns:1fr;gap:21px}.step{padding-top:12px}.board-columns{grid-template-columns:1fr}.board-cell{padding:9px}.compare{grid-template-columns:1fr}.compare-col,.compare-col+.compare-col{padding:18px 0;border-left:0}.compare-col+.compare-col{border-top:1px solid var(--line)}.timeline{grid-template-columns:1fr;gap:17px}.topic-grid{grid-template-columns:1fr}.topic:first-child{grid-column:auto}.info-row{grid-template-columns:105px 1fr;gap:10px}.promise-strip{gap:15px 10px}.promise span{font-size:11px}.footer-grid{gap:24px 14px}.footer-bottom{flex-direction:column;gap:5px}.quote-large{font-size:21px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}

/* roulang page: category1 */
:root{--ink:#20251f;--muted:#69716a;--green:#356b4d;--green-dark:#244e38;--lime:#d9ee76;--coral:#ef795c;--paper:#f7f8f2;--white:#fff;--line:#e3e8dc;--mint:#eaf1e5;--radius:10px;--shadow:0 12px 32px rgba(35,55,38,.08);--width:1160px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
button{font:inherit}
.container{width:min(var(--width),calc(100% - 48px));margin:auto}
.site-header{height:76px;background:rgba(247,248,242,.96);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}
.nav-wrap{height:100%;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:42px;height:42px;display:grid;place-items:center;background:var(--green);color:#fff;border-radius:8px;font-weight:800;font-size:15px}
.brand-name{font-size:17px;font-weight:750;line-height:1.2}
.brand-name small{display:block;color:var(--muted);font-size:11px;font-weight:500;margin-top:4px}
.nav-links{display:flex;align-items:center;gap:18px;margin-left:auto}
.nav-links a{font-size:13px;color:#4d574e;padding:9px 0;transition:.2s}
.nav-links a:hover,.nav-links a.active{color:var(--green-dark)}
.nav-links a.active{font-weight:700}
.nav-cta,.button{min-height:44px;padding:10px 19px;border-radius:7px;background:var(--green);color:#fff;border:1px solid var(--green);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;transition:.2s}
.nav-cta:hover,.button:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(36,78,56,.17)}
.button.secondary{background:transparent;color:var(--green-dark);border-color:#b8c9b8}
.button.secondary:hover{background:#edf3e8;box-shadow:none}
a:focus-visible,button:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
.menu-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);cursor:pointer}
.hero{padding:58px 0 50px;background:#eaf1e5;border-bottom:1px solid var(--line)}
.hero-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:12px;font-weight:750}
.eyebrow:before{content:"";width:8px;height:8px;border-radius:2px;background:var(--coral)}
h1{font-size:clamp(34px,5vw,58px);line-height:1.16;letter-spacing:-2px;margin:12px 0 16px}
.hero-sub{font-size:19px;font-weight:650;margin:0 0 8px}
.hero-copy{color:var(--muted);max-width:650px;margin:0 0 25px}
.button-row{display:flex;gap:12px;flex-wrap:wrap}
.hero-panel{background:#dce9d8;border-radius:10px;padding:22px;min-height:275px;display:flex;align-items:center}
.panel-window{width:100%;background:#fff;border:1px solid #d7e2d3;border-radius:8px;box-shadow:var(--shadow);overflow:hidden}
.window-bar{height:35px;border-bottom:1px solid var(--line);display:flex;align-items:center;padding:0 13px;gap:6px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--coral)}
.dot:nth-child(2){background:var(--lime)}.dot:nth-child(3){background:#a9c7a8}
.window-title{font-size:11px;color:var(--muted);margin-left:6px}
.window-body{padding:21px}.window-body strong{font-size:20px;display:block;margin-bottom:5px}.window-body p{color:var(--muted);font-size:13px;margin:0}
.status-line{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:19px;padding-top:15px;font-size:12px}
.status{color:var(--green);font-weight:700}
.section{padding:66px 0;border-top:1px solid var(--line)}
.section.soft{background:#eef2e9}
.section.dark{background:#244e38;color:#fff;border:0}
.section-head{max-width:700px;margin-bottom:30px}
.section-head h2{font-size:30px;line-height:1.25;margin:8px 0 10px}
.section-head p{color:var(--muted);margin:0}
.dark .section-head p{color:#d6e2d5}
.kicker{font-size:12px;color:var(--green);font-weight:800;letter-spacing:.04em}
.index-layout{display:grid;grid-template-columns:.72fr 1.28fr;gap:46px}
.index-note{border-left:3px solid var(--coral);padding:5px 0 5px 20px;color:var(--muted);font-size:14px}
.index-list{border-top:1px solid var(--line)}
.index-row{display:grid;grid-template-columns:54px 1fr auto;gap:18px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
.index-number{width:34px;height:34px;border-radius:7px;background:var(--lime);display:grid;place-items:center;color:var(--green-dark);font-weight:800}
.index-row h3{font-size:17px;margin:0 0 3px}.index-row p{font-size:13px;color:var(--muted);margin:0}
.arrow{color:var(--green);font-size:21px}
.feature-layout{display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:start}
.feature-list{border-top:1px solid var(--line)}
.feature{padding:19px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:42px 1fr;gap:14px}
.feature-icon{width:36px;height:36px;display:grid;place-items:center;background:var(--lime);border-radius:7px;color:var(--green-dark);font-weight:800}
.feature h3{font-size:17px;margin:0 0 4px}.feature p{font-size:14px;color:var(--muted);margin:0}
.feature-board{background:#f0e9d8;padding:25px;border-radius:8px}
.board-title{font-size:12px;color:var(--muted);margin-bottom:13px}
.board-main{background:#fff;border-radius:7px;padding:22px}
.board-main h3{margin:0 0 7px;font-size:22px}.board-main p{font-size:13px;color:var(--muted);margin:0 0 18px}
.board-columns{display:grid;grid-template-columns:repeat(3,1fr);gap:9px}
.board-cell{background:#f5f7f1;border-radius:6px;padding:13px 10px;font-size:12px}.board-cell b{display:block;color:var(--green-dark);font-size:16px}
.device-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.device-item{padding:22px;background:var(--white);border:1px solid var(--line);border-radius:8px;box-shadow:0 5px 17px rgba(35,55,38,.04)}
.device-item h3{font-size:17px;margin:10px 0 5px}.device-item p{font-size:13px;color:var(--muted);margin:0}
.device-icon{width:38px;height:38px;border-radius:8px;background:var(--mint);display:grid;place-items:center;color:var(--green);font-weight:800}
.info-list{border-top:1px solid var(--line)}
.info-row{display:grid;grid-template-columns:150px 1fr 100px;gap:20px;padding:17px 0;border-bottom:1px solid var(--line);align-items:center}
.info-row strong{font-size:14px}.info-row p{font-size:13px;color:var(--muted);margin:0}.tag{display:inline-flex;justify-content:center;padding:4px 9px;border-radius:5px;background:#edf3e8;color:var(--green);font-size:11px;font-weight:700}
.timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.timeline-item{border-top:2px solid #a6bd9f;padding-top:15px}.timeline-item time{color:var(--green);font-size:11px;font-weight:800}.timeline-item h3{font-size:16px;margin:6px 0}.timeline-item p{font-size:13px;color:var(--muted);margin:0}
.faq-list{border-top:1px solid rgba(255,255,255,.24);max-width:820px}
details{border-bottom:1px solid rgba(255,255,255,.24);padding:17px 0}summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:30px}summary::-webkit-details-marker{display:none}summary:after{content:"+";position:absolute;right:0;font-size:22px;font-weight:400}details[open] summary:after{content:"−"}details p{color:#d6e2d5;font-size:14px;margin:10px 0 0}
.cta-band{padding:34px 0;background:var(--lime)}.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}.cta-inner h2{font-size:24px;margin:0 0 4px}.cta-inner p{margin:0;color:#52614d;font-size:14px}
.site-footer{padding:48px 0 22px;background:#202b23;color:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px;padding-bottom:34px}
.footer-brand p{font-size:13px;color:#c3cec3;max-width:260px;margin:14px 0 0}.footer-title{font-size:13px;font-weight:750;margin-bottom:13px}.footer-links{display:grid;gap:8px}.footer-links a{font-size:12px;color:#c3cec3;width:max-content;max-width:100%}.footer-links a:hover{color:var(--lime)}
.footer-bottom{border-top:1px solid #435046;padding-top:16px;color:#bdc7bd;font-size:11px;display:flex;justify-content:space-between;gap:18px}
.mobile-cta{display:none}
@media(max-width:900px){.nav-links{gap:11px}.nav-links a{font-size:12px}.hero-layout,.index-layout,.feature-layout{gap:28px}.footer-grid{gap:20px}}
@media(max-width:700px){.container{width:min(100% - 36px,var(--width))}.site-header{height:68px}.nav-cta{display:none}.menu-toggle{display:block}.nav-links{display:none;position:absolute;left:18px;right:18px;top:73px;background:var(--white);padding:14px 20px;border:1px solid var(--line);border-radius:8px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start;gap:4px}.nav-links.open{display:flex}.nav-links a{width:100%;padding:9px 0}.hero{padding:43px 0}.hero-layout,.index-layout,.feature-layout{grid-template-columns:1fr}.hero-panel{min-height:230px}.section{padding:48px 0}.section-head h2{font-size:26px}.device-grid,.timeline{grid-template-columns:1fr}.info-row{grid-template-columns:1fr;gap:5px}.info-row .tag{width:max-content}.cta-inner{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-bottom{flex-direction:column;gap:5px}.mobile-cta{display:block;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);padding:10px 18px;z-index:9}.mobile-cta .button{width:100%}}
@media(max-width:420px){h1{font-size:35px}.board-columns{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}}

/* roulang page: category2 */
:root {
      --ink: #20251f;
      --muted: #69716a;
      --green: #356b4d;
      --green-dark: #244e38;
      --lime: #d9ee76;
      --coral: #ef795c;
      --paper: #f7f8f2;
      --white: #fff;
      --line: #e3e8dc;
      --mint: #eaf1e5;
      --radius: 10px;
      --shadow: 0 12px 32px rgba(35,55,38,.08);
      --width: 1160px;
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; scroll-padding-top: 90px; }
    body {
      margin: 0;
      background: var(--paper);
      color: var(--ink);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",sans-serif;
      line-height: 1.7;
    }
    a { color: inherit; text-decoration: none; }
    button { font: inherit; }
    img { display: block; max-width: 100%; }
    .container { width: min(var(--width), calc(100% - 48px)); margin-inline: auto; }
    .site-header {
      height: 76px;
      background: rgba(247,248,242,.96);
      border-bottom: 1px solid var(--line);
      position: sticky;
      top: 0;
      z-index: 10;
      backdrop-filter: blur(12px);
    }
    .nav-wrap { height: 100%; display: flex; align-items: center; gap: 20px; }
    .brand { display: flex; align-items: center; gap: 11px; flex: none; }
    .brand-mark {
      width: 42px;
      height: 42px;
      display: grid;
      place-items: center;
      background: var(--green);
      color: #fff;
      border-radius: 8px;
      font-weight: 800;
      font-size: 15px;
    }
    .brand-name { font-size: 17px; font-weight: 750; line-height: 1.2; }
    .brand-name small { display: block; color: var(--muted); font-size: 11px; font-weight: 500; margin-top: 4px; }
    .nav-links { display: flex; align-items: center; gap: 15px; margin-left: auto; }
    .nav-links a { font-size: 12px; color: #4d574e; padding: 9px 0; transition: color .2s; }
    .nav-links a:hover, .nav-links a.active { color: var(--green-dark); }
    .nav-links a.active { font-weight: 700; }
    .nav-cta, .button {
      min-height: 44px;
      padding: 10px 19px;
      border-radius: 7px;
      background: var(--green);
      color: #fff;
      border: 1px solid var(--green);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 14px;
      transition: transform .2s, background .2s, box-shadow .2s;
    }
    .nav-cta:hover, .button:hover {
      background: var(--green-dark);
      transform: translateY(-2px);
      box-shadow: 0 7px 16px rgba(36,78,56,.17);
    }
    .button.secondary { background: transparent; color: var(--green-dark); border-color: #b8c9b8; }
    .button.secondary:hover { background: #edf3e8; box-shadow: none; }
    a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--coral); outline-offset: 3px; }
    .menu-toggle {
      display: none;
      margin-left: auto;
      width: 44px;
      height: 44px;
      border: 1px solid var(--line);
      border-radius: 7px;
      background: #fff;
      color: var(--ink);
      cursor: pointer;
    }
    .hero { padding: 54px 0 48px; }
    .hero-shell {
      display: grid;
      grid-template-columns: 1.1fr .9fr;
      gap: 28px;
      align-items: stretch;
    }
    .hero-main {
      min-height: 330px;
      padding: 42px;
      background: var(--mint);
      border-radius: var(--radius);
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .eyebrow { display: inline-flex; align-items: center; gap: 8px; color: var(--green); font-size: 12px; font-weight: 750; }
    .eyebrow:before { content: ""; width: 8px; height: 8px; border-radius: 2px; background: var(--coral); }
    h1 { max-width: 620px; margin: 14px 0 12px; font-size: clamp(34px, 4vw, 48px); line-height: 1.18; }
    .hero-main p { max-width: 620px; color: var(--muted); margin: 0 0 22px; }
    .hero-actions { display: flex; gap: 11px; flex-wrap: wrap; }
    .hero-side { display: grid; grid-template-rows: 1fr 1fr; gap: 14px; }
    .side-note { padding: 23px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
    .side-note:nth-child(2) { background: #f0e9d8; border-color: #e6dfcf; }
    .side-note .number { color: var(--green); font-size: 12px; font-weight: 800; }
    .side-note h2 { font-size: 18px; margin: 7px 0 5px; }
    .side-note p { color: var(--muted); font-size: 13px; margin: 0; }
    .section { padding: 58px 0; border-top: 1px solid var(--line); }
    .section.soft { background: #eef2e9; }
    .section-head { max-width: 700px; margin-bottom: 27px; }
    .section-head h2 { font-size: 28px; line-height: 1.3; margin: 7px 0 9px; }
    .section-head p { color: var(--muted); margin: 0; }
    .guide-grid { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(260px,.75fr); gap: 42px; }
    .guide-list { border-top: 1px solid var(--line); }
    .guide-row {
      display: grid;
      grid-template-columns: 48px 1fr auto;
      gap: 17px;
      align-items: start;
      padding: 21px 0;
      border-bottom: 1px solid var(--line);
    }
    .guide-index { color: var(--green); font-size: 13px; font-weight: 800; padding-top: 2px; }
    .guide-row h3 { font-size: 17px; margin: 0 0 5px; }
    .guide-row p { font-size: 14px; color: var(--muted); margin: 0; }
    .guide-tag { padding: 5px 9px; border-radius: 5px; background: #e3ecd9; color: var(--green-dark); font-size: 11px; white-space: nowrap; }
    .side-panel { padding: 24px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
    .side-panel h3 { font-size: 17px; margin: 0 0 13px; }
    .check-list { list-style: none; padding: 0; margin: 0; }
    .check-list li { padding: 11px 0; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
    .check-list li:before { content: "✓"; color: var(--green); font-weight: 800; margin-right: 9px; }
    .steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 0; counter-reset: step; }
    .step {
      position: relative;
      padding: 22px 22px 20px 0;
      border-top: 2px solid #b7c9b3;
      counter-increment: step;
    }
    .step:before { content: "0" counter(step); position: absolute; top: -14px; left: 0; padding: 0 8px 0 0; background: var(--paper); color: var(--green); font-size: 12px; font-weight: 800; }
    .step h3 { font-size: 16px; margin: 6px 0; }
    .step p { color: var(--muted); font-size: 13px; margin: 0; }
    .steps-section .step:before { background: #eef2e9; }
    .device-band { display: grid; grid-template-columns: .8fr 1.2fr; gap: 35px; align-items: center; }
    .device-band h2 { font-size: 27px; line-height: 1.3; margin: 0 0 10px; }
    .device-band p { color: var(--muted); margin: 0; }
    .device-chips { display: flex; flex-wrap: wrap; gap: 10px; }
    .device-chip { padding: 12px 15px; border: 1px solid #c9d5c7; border-radius: 6px; background: rgba(255,255,255,.62); font-size: 13px; color: #425344; }
    .notice-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
    .notice-block { padding: 20px 0; border-top: 1px solid var(--line); }
    .notice-block h3 { font-size: 16px; margin: 0 0 7px; }
    .notice-block p { color: var(--muted); font-size: 14px; margin: 0; }
    .faq-list { border-top: 1px solid var(--line); }
    .faq-list details { border-bottom: 1px solid var(--line); }
    .faq-list summary { position: relative; padding: 17px 35px 17px 0; cursor: pointer; list-style: none; font-weight: 700; font-size: 15px; }
    .faq-list summary::-webkit-details-marker { display: none; }
    .faq-list summary:after { content: "+"; position: absolute; right: 4px; top: 11px; color: var(--green); font-size: 22px; font-weight: 400; }
    .faq-list details[open] summary:after { content: "−"; }
    .faq-list details p { max-width: 850px; color: var(--muted); font-size: 14px; margin: 0 0 18px; }
    .closing { padding: 35px 0; background: var(--green-dark); color: #fff; }
    .closing-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; }
    .closing h2 { font-size: 22px; margin: 0 0 4px; }
    .closing p { color: #d6e2d5; margin: 0; font-size: 14px; }
    .closing .button { background: var(--lime); border-color: var(--lime); color: var(--green-dark); flex: none; }
    .closing .button:hover { background: #e5f5a3; }
    .site-footer { padding: 48px 0 22px; background: #202b23; color: #fff; }
    .footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 20px; padding-bottom: 34px; }
    .footer-brand p { font-size: 13px; color: #c3cec3; max-width: 260px; margin: 14px 0 0; }
    .footer-title { font-size: 13px; font-weight: 750; margin-bottom: 13px; }
    .footer-links { display: grid; gap: 8px; }
    .footer-links a { font-size: 12px; color: #c3cec3; width: max-content; max-width: 100%; }
    .footer-links a:hover { color: var(--lime); }
    .footer-bottom { border-top: 1px solid #435046; padding-top: 16px; color: #bdc7bd; font-size: 11px; display: flex; justify-content: space-between; gap: 18px; }
    @media (max-width: 1024px) {
      .nav-wrap { gap: 14px; }
      .nav-links { gap: 10px; }
      .nav-links a { font-size: 11px; }
      .nav-cta { padding-inline: 13px; }
      .hero-main { padding: 32px; }
      .guide-grid { gap: 26px; }
      .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
      .footer-grid > div:last-child { grid-column: 2 / 4; }
    }
    @media (max-width: 768px) {
      .container { width: min(100% - 36px, var(--width)); }
      .site-header { height: 68px; }
      .menu-toggle { display: grid; place-items: center; }
      .nav-cta { display: none; }
      .nav-links {
        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: var(--shadow);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
      }
      .nav-links.open { display: flex; }
      .nav-links a { padding: 12px 4px; border-bottom: 1px solid var(--line); font-size: 14px; }
      .hero { padding: 32px 0; }
      .hero-shell { grid-template-columns: 1fr; }
      .hero-main { min-height: 0; padding: 30px 25px; }
      .hero-side { grid-template-columns: 1fr 1fr; grid-template-rows: auto; }
      .section { padding: 45px 0; }
      .guide-grid, .device-band { grid-template-columns: 1fr; gap: 25px; }
      .steps { grid-template-columns: 1fr 1fr; row-gap: 25px; }
      .notice-grid { gap: 20px; }
      .closing-inner { align-items: flex-start; flex-direction: column; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid > div:last-child { grid-column: auto; }
    }
    @media (max-width: 520px) {
      .brand-name { font-size: 15px; }
      .brand-mark { width: 39px; height: 39px; }
      h1 { font-size: 34px; }
      .hero-main { padding: 27px 21px; }
      .hero-main p { font-size: 14px; }
      .hero-actions { align-items: stretch; flex-direction: column; }
      .hero-actions .button { width: 100%; }
      .hero-side { grid-template-columns: 1fr; }
      .side-note { padding: 18px; }
      .section-head h2, .device-band h2 { font-size: 24px; }
      .guide-row { grid-template-columns: 34px 1fr; gap: 12px; }
      .guide-tag { grid-column: 2; justify-self: start; }
      .steps { grid-template-columns: 1fr; gap: 21px; margin-left: 4px; }
      .step { padding: 12px 0 0 15px; border-top: 0; border-left: 2px solid #b7c9b3; }
      .step:before { top: 10px; left: -10px; padding: 0 5px; }
      .notice-grid { grid-template-columns: 1fr; gap: 0; }
      .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px 16px; }
      .footer-brand { grid-column: 1 / -1; }
      .footer-bottom { flex-direction: column; gap: 5px; }
      .closing .button { width: 100%; }
    }

/* roulang page: category3 */
:root{--ink:#20251f;--muted:#69716a;--green:#356b4d;--green-dark:#244e38;--lime:#d9ee76;--coral:#ef795c;--paper:#f7f8f2;--white:#fff;--line:#e3e8dc;--mint:#eaf1e5;--radius:10px;--shadow:0 12px 32px rgba(35,55,38,.08);--width:1160px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
button{font:inherit}
img{display:block;max-width:100%}
.container{width:min(var(--width),calc(100% - 48px));margin-inline:auto}
.site-header{height:76px;background:rgba(247,248,242,.97);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}
.nav-wrap{height:100%;display:flex;align-items:center;gap:20px}
.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:42px;height:42px;display:grid;place-items:center;background:var(--green);color:#fff;border-radius:8px;font-weight:800;font-size:15px}
.brand-name{font-size:17px;font-weight:750;line-height:1.2}
.brand-name small{display:block;color:var(--muted);font-size:11px;font-weight:500;margin-top:4px}
.nav-links{display:flex;align-items:center;gap:15px;margin-left:auto}
.nav-links a{font-size:12px;color:#4d574e;padding:9px 0;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--green-dark)}
.nav-links a.active{font-weight:700}
.nav-cta,.button{min-height:44px;padding:10px 19px;border-radius:7px;background:var(--green);color:#fff;border:1px solid var(--green);display:inline-flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;transition:transform .2s,background .2s,box-shadow .2s}
.nav-cta:hover,.button:hover{background:var(--green-dark);transform:translateY(-2px);box-shadow:0 7px 16px rgba(36,78,56,.17)}
.button.secondary{background:transparent;color:var(--green-dark);border-color:#b8c9b8}
.button.secondary:hover{background:#edf3e8;box-shadow:none}
a:focus-visible,button:focus-visible{outline:3px solid var(--coral);outline-offset:3px}
.menu-toggle{display:none;margin-left:auto;width:44px;height:44px;border:1px solid var(--line);border-radius:7px;background:#fff;color:var(--ink);cursor:pointer}
main{min-height:60vh}
.intro{padding:53px 0 37px}
.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:22px}
.breadcrumb a:hover{color:var(--green)}
.intro-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:44px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:12px;font-weight:750}
.eyebrow:before{content:"";width:8px;height:8px;border-radius:2px;background:var(--coral)}
h1{font-size:clamp(34px,4vw,49px);line-height:1.16;margin:12px 0 14px;letter-spacing:0}
.intro-copy{max-width:680px;color:var(--muted);font-size:16px;margin:0}
.intro-actions{display:flex;gap:11px;flex-wrap:wrap;margin-top:22px}
.release-visual{min-height:245px;background:#e7eedf;border-radius:var(--radius);padding:23px;position:relative;overflow:hidden}
.release-visual:after{content:"";position:absolute;width:160px;height:160px;border:1px solid rgba(53,107,77,.18);border-radius:50%;right:-45px;top:-54px}
.visual-top{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted)}
.status-dot{width:9px;height:9px;border-radius:50%;background:var(--coral);display:inline-block;margin-right:7px}
.release-current{margin-top:29px;display:flex;gap:18px;align-items:center}
.release-index{font-size:36px;font-weight:800;color:var(--green-dark);line-height:1}
.release-detail strong{display:block;font-size:18px;margin-bottom:3px}
.release-detail span{font-size:12px;color:var(--muted)}
.section{padding:58px 0;border-top:1px solid var(--line)}
.section.soft{background:#eef2e9}
.section-head{max-width:700px;margin-bottom:29px}
.section-head h2{font-size:30px;line-height:1.25;margin:7px 0 10px}
.section-head p{color:var(--muted);margin:0}
.update-layout{display:grid;grid-template-columns:1.15fr .85fr;gap:42px;align-items:start}
.timeline{border-left:2px solid #b5c9ad;padding-left:24px}
.timeline-item{position:relative;padding:0 0 28px}
.timeline-item:last-child{padding-bottom:0}
.timeline-item:before{content:"";position:absolute;width:11px;height:11px;border-radius:50%;background:var(--lime);border:3px solid var(--green);left:-31px;top:5px}
.timeline-item time{display:block;color:var(--green);font-size:11px;font-weight:800;letter-spacing:.04em}
.timeline-item h3{font-size:18px;margin:5px 0 5px}
.timeline-item p{font-size:14px;color:var(--muted);margin:0;max-width:640px}
.release-note{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.release-note h3{font-size:18px;margin:0 0 13px}
.release-note p{font-size:14px;color:var(--muted);margin:0 0 17px}
.note-list{list-style:none;padding:0;margin:0}
.note-list li{padding:11px 0;border-top:1px solid var(--line);font-size:13px;display:flex;gap:10px}
.note-list li:before{content:"✓";color:var(--green);font-weight:800}
.version-grid{display:grid;grid-template-columns:1.3fr .7fr;gap:18px}
.version-table{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.version-row{display:grid;grid-template-columns:120px 125px 1fr;gap:18px;padding:17px 20px;border-bottom:1px solid var(--line);align-items:center}
.version-row:last-child{border-bottom:0}
.version-row strong{font-size:15px}
.version-row span{font-size:12px;color:var(--muted)}
.version-row p{font-size:13px;color:var(--muted);margin:0}
.badge{display:inline-flex;align-items:center;width:max-content;padding:3px 9px;border-radius:20px;background:#edf3e8;color:var(--green-dark);font-size:11px;font-weight:700}
.badge.coral{background:#fff0eb;color:#bd543d}
.check-panel{background:var(--green-dark);border-radius:var(--radius);padding:24px;color:#fff}
.check-panel h3{font-size:19px;margin:0 0 9px}
.check-panel p{color:#d6e2d5;font-size:13px;margin:0 0 18px}
.check-step{display:flex;gap:11px;padding:12px 0;border-top:1px solid rgba(255,255,255,.2);font-size:13px}
.check-step b{color:var(--lime);font-size:12px}
.guide-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.guide-item{padding:21px 25px 21px 0}
.guide-item+.guide-item{padding-left:25px;border-left:1px solid var(--line)}
.guide-number{color:var(--coral);font-size:12px;font-weight:800}
.guide-item h3{font-size:16px;margin:5px 0}
.guide-item p{font-size:13px;color:var(--muted);margin:0}
.notice-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.notice{padding:20px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:transform .2s,box-shadow .2s}
.notice:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.notice-meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:11px}
.notice h3{font-size:17px;margin:9px 0 6px}
.notice p{color:var(--muted);font-size:13px;margin:0}
.security-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:start}
.security-layout h2{font-size:29px;line-height:1.3;margin:0 0 11px}
.security-layout>div>p{color:var(--muted);font-size:14px;margin:0}
.security-list{border-top:1px solid var(--line)}
.security-row{display:grid;grid-template-columns:145px 1fr;gap:18px;padding:16px 0;border-bottom:1px solid var(--line)}
.security-row strong{font-size:14px}
.security-row p{font-size:13px;color:var(--muted);margin:0}
.faq-list{border-top:1px solid rgba(255,255,255,.24)}
.faq-list details{border-bottom:1px solid rgba(255,255,255,.24);padding:17px 0}
.faq-list summary{cursor:pointer;font-size:15px;font-weight:700;list-style:none;display:flex;justify-content:space-between;gap:18px}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"+";color:var(--lime);font-size:20px;line-height:1}
.faq-list details[open] summary:after{content:"−"}
.faq-list details p{color:#d6e2d5;font-size:13px;margin:11px 29px 0 0}
.final-cta{padding:44px 0;background:#d9ee76}
.final-cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
.final-cta h2{font-size:25px;margin:0 0 5px;color:var(--green-dark)}
.final-cta p{margin:0;color:#526548;font-size:14px}
.site-footer{padding:48px 0 22px;background:#202b23;color:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:20px;padding-bottom:34px}
.footer-brand p{font-size:13px;color:#c3cec3;max-width:260px;margin:14px 0 0}
.footer-title{font-size:13px;font-weight:750;margin-bottom:13px}
.footer-links{display:grid;gap:8px}
.footer-links a{font-size:12px;color:#c3cec3;width:max-content;max-width:100%}
.footer-links a:hover{color:var(--lime)}
.footer-bottom{border-top:1px solid #435046;padding-top:16px;color:#bdc7bd;font-size:11px;display:flex;justify-content:space-between;gap:18px}
.mobile-cta{display:none}
@media(max-width:900px){
 .nav-links{gap:10px}.nav-cta{display:none}.intro-grid,.update-layout,.version-grid,.security-layout{grid-template-columns:1fr;gap:28px}
 .release-visual{min-height:210px}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media(max-width:700px){
 .container{width:min(100% - 36px,var(--width))}
 .site-header{height:68px}
 .menu-toggle{display:block}
 .nav-links{display:none;position:absolute;top:68px;left:18px;right:18px;background:var(--white);border:1px solid var(--line);border-radius:8px;padding:12px 18px;box-shadow:var(--shadow);align-items:stretch;flex-direction:column;gap:2px}
 .nav-links.open{display:flex}
 .nav-links a{padding:9px 0;border-bottom:1px solid #edf0ea}
 .nav-links a:last-child{border-bottom:0}
 .intro{padding:38px 0 28px}
 h1{font-size:35px}
 .intro-copy{font-size:15px}
 .section{padding:45px 0}
 .section-head h2,.security-layout h2{font-size:25px}
 .guide-strip,.notice-grid{grid-template-columns:1fr}
 .guide-item,.guide-item+.guide-item{padding:17px 0;border-left:0}
 .guide-item+.guide-item{border-top:1px solid var(--line)}
 .version-row{grid-template-columns:1fr 1fr;gap:7px;padding:15px}
 .version-row p{grid-column:1/-1}
 .security-row{grid-template-columns:1fr;gap:3px}
 .final-cta-inner{display:block}
 .final-cta .button{margin-top:18px}
 .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
 .footer-brand{grid-column:1/-1}
 .footer-bottom{display:block}
 .footer-bottom span{display:block;margin-top:6px}
 .mobile-cta{display:block;position:fixed;bottom:0;left:0;right:0;padding:10px 18px;background:rgba(32,43,35,.96);z-index:9}
 .mobile-cta .button{width:100%;min-height:42px}
}
@media(max-width:430px){
 .brand-name{font-size:15px}.brand-name small{font-size:10px}
 .brand-mark{width:38px;height:38px;font-size:14px}
 .release-current{gap:12px}
 .release-index{font-size:30px}
 .footer-grid{grid-template-columns:1fr}
}