/* roulang page: index */
:root{
  --ink:#18221f;--muted:#68736d;--paper:#f5f6f2;--white:#fff;
  --forest:#1d5a4a;--forest-deep:#123b32;--lime:#b7d832;--mist:#e7ebe4;
  --line:#dce2da;--warm:#ecefe9;--radius:18px;--shadow:0 14px 38px rgba(20,43,35,.08);
  --max:1200px;
}
*{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;background:var(--paper);color:var(--ink);font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{height:78px;background:rgba(245,246,242,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.header-inner{height:100%;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:10px;min-width:max-content;font-weight:850;font-size:21px;letter-spacing:-.04em}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-size:18px}
.logo small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;line-height:1}
.nav{display:flex;align-items:center;gap:25px;margin-left:auto}
.nav a{font-size:14px;color:#52615a;padding:25px 0;position:relative;white-space:nowrap}
.nav a:hover,.nav a.active{color:var(--forest)}
.nav a.active:after{content:"";height:3px;border-radius:4px;background:var(--lime);position:absolute;bottom:16px;left:0;right:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 20px;border-radius:10px;background:var(--forest);color:#fff;font-weight:750;transition:.25s ease}
.btn:hover{background:var(--forest-deep);transform:translateY(-2px)}
.btn:focus,input:focus,textarea:focus,select:focus,summary:focus{outline:3px solid rgba(183,216,50,.5);outline-offset:3px}
.btn-outline{background:transparent;color:var(--forest);border:1px solid #8ba79b}
.btn-outline:hover{background:var(--forest);color:#fff}
.btn-lime{background:var(--lime);color:var(--forest-deep)}
.btn-lime:hover{background:#c8e64a}
.menu-toggle{display:none;background:transparent;font-size:24px;color:var(--forest)}
.hero{background:var(--forest-deep);color:#fff;padding:92px 0 62px;overflow:hidden;position:relative}
.hero:before{content:"";position:absolute;width:520px;height:520px;border:1px solid rgba(183,216,50,.18);border-radius:50%;right:-120px;top:-190px}
.hero-grid{display:grid;grid-template-columns:1.03fr .97fr;gap:70px;align-items:center;position:relative}
.eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--lime);font-size:13px;font-weight:750;letter-spacing:.04em}
.eyebrow:before{content:"";width:25px;height:2px;background:var(--lime)}
.hero h1{font-size:clamp(36px,5vw,58px);line-height:1.18;letter-spacing:-.06em;margin:20px 0}
.hero h1 em{font-style:normal;color:var(--lime)}
.hero p{color:#c8d4cd;max-width:590px;font-size:17px}
.hero-actions{display:flex;gap:12px;margin:30px 0}
.hero .btn-outline{color:#fff;border-color:#6e9185}
.trust-row{display:flex;gap:18px;flex-wrap:wrap;color:#b7c8c0;font-size:13px}
.trust-row span{display:flex;align-items:center;gap:6px}.trust-row i{width:7px;height:7px;background:var(--lime);border-radius:50%}
.visual{min-height:380px;position:relative;display:grid;place-items:center}
.device{width:218px;height:390px;border:8px solid #283f37;border-radius:32px;background:#f2f5ed;box-shadow:20px 24px 0 rgba(183,216,50,.15),0 28px 60px rgba(0,0,0,.26);transform:rotate(7deg);padding:24px 16px;color:var(--ink)}
.device-top{height:10px;width:72px;border-radius:8px;background:#263a34;margin:-11px auto 23px}
.device h3{font-size:18px;line-height:1.3;margin-bottom:20px}.screen-line{height:9px;background:#dce5dc;border-radius:5px;margin:10px 0}.screen-line.short{width:60%}
.screen-panel{height:105px;background:var(--forest);border-radius:14px;margin:18px 0;color:#fff;padding:16px}.screen-panel strong{font-size:24px;color:var(--lime)}
.float-card{position:absolute;right:3%;top:42px;background:#fff;color:var(--ink);border-radius:14px;padding:14px 17px;box-shadow:var(--shadow);font-size:13px}.float-card b{display:block;color:var(--forest);font-size:18px}
.float-card.bottom{right:auto;left:3%;top:auto;bottom:42px}.signal{display:flex;gap:4px;align-items:end;height:18px}.signal i{width:4px;background:var(--lime);border-radius:2px}.signal i:nth-child(1){height:6px}.signal i:nth-child(2){height:11px}.signal i:nth-child(3){height:17px}
.hero-strip{background:#214f42;border-top:1px solid rgba(255,255,255,.12);padding:18px 0}.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.strip span{font-size:14px;color:#d1ddd6;display:flex;gap:10px;align-items:center}.strip b{color:var(--lime)}
section{padding:88px 0}.section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:34px}.section-head h2{font-size:34px;line-height:1.25;letter-spacing:-.05em}.section-head p{color:var(--muted);max-width:500px}.kicker{font-size:13px;color:var(--forest);font-weight:800;letter-spacing:.08em;margin-bottom:9px}
.stats{background:#18221f;color:#fff;padding:25px 0}.stat-grid{display:grid;grid-template-columns:repeat(4,1fr)}.stat{padding:8px 26px;border-right:1px solid #43524b}.stat:first-child{padding-left:0}.stat:last-child{border:0}.stat strong{font-size:30px;color:var(--lime);display:block;line-height:1.2}.stat span{color:#b8c5be;font-size:13px}
.channel-grid{display:grid;grid-template-columns:1.15fr .95fr 1.25fr .9fr;gap:14px;align-items:end}.channel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px;min-height:175px;box-shadow:var(--shadow);transition:.25s}.channel:nth-child(2){min-height:210px;background:#e7ebe4}.channel:nth-child(3){min-height:190px;background:var(--forest);color:#fff}.channel:nth-child(4){min-height:235px;background:#dce8ba}.channel:hover,.article-card:hover,.topic:hover{transform:translateY(-4px);border-color:var(--forest)}.channel-icon{font-size:26px;color:var(--forest);margin-bottom:18px}.channel:nth-child(3) .channel-icon{color:var(--lime)}.channel h3{font-size:20px;line-height:1.3;margin-bottom:6px}.channel p{font-size:13px;color:var(--muted)}.channel:nth-child(3) p{color:#c8d8d0}.arrow{display:block;text-align:right;color:var(--forest);font-size:22px;margin-top:16px}.channel:nth-child(3) .arrow{color:var(--lime)}
.download{background:var(--forest-deep);color:#fff}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}.download h2{font-size:36px;line-height:1.3;letter-spacing:-.05em}.download p{color:#c4d2ca;margin:14px 0 25px}.platforms{display:flex;gap:9px;flex-wrap:wrap}.platforms span{border:1px solid #6f8c80;border-radius:8px;padding:7px 13px;color:#d8e4dd;font-size:13px}.qr-area{display:flex;align-items:center;gap:28px}.qr{width:128px;height:128px;background:repeating-linear-gradient(45deg,#fff 0 5px,#d6dfd7 5px 9px);border:9px solid #fff;border-radius:10px}.install{display:flex;gap:13px;margin-top:30px}.install div{flex:1;border-top:1px solid #567167;padding-top:11px;color:#c4d2ca;font-size:13px}.install b{display:block;color:var(--lime);font-size:18px}
.timeline-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0}.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.timeline-item{border-left:2px solid var(--lime);padding:0 22px}.timeline-item:first-child{border:0;padding-left:0}.timeline-item strong{font-size:21px;color:var(--forest);display:block}.timeline-item span{font-size:13px;color:var(--muted)}
.guide-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px}.feature-guide{background:var(--forest);color:#fff;border-radius:var(--radius);padding:35px;min-height:310px;display:flex;flex-direction:column;justify-content:end}.feature-guide p{color:#c9d8d1;margin:10px 0 16px}.guide-list{display:grid;gap:12px}.article-card{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:19px;transition:.25s}.tag{color:var(--forest);font-size:12px}.article-card h3{font-size:18px;line-height:1.45;margin:7px 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.article-card p{color:var(--muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.date{font-size:12px;color:#89938d}
.topic-section{background:#e8ece6}.topic-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;grid-template-rows:160px 160px;gap:14px}.topic{border-radius:var(--radius);padding:25px;background:#fff;border:1px solid var(--line);transition:.25s}.topic:first-child{grid-row:span 2;background:var(--forest);color:#fff}.topic:nth-child(3){background:#dce8ba}.topic h3{font-size:21px}.topic p{font-size:13px;color:var(--muted)}.topic:first-child p{color:#cbd9d2}.number{font-size:12px;color:var(--forest);font-weight:800;margin-bottom:20px}.topic:first-child .number{color:var(--lime)}
.news-layout{display:grid;grid-template-columns:270px 1fr;gap:70px}.filter{display:flex;gap:7px;flex-wrap:wrap;margin-top:18px}.filter span{border:1px solid var(--line);border-radius:20px;padding:4px 11px;color:var(--muted);font-size:12px}.news-list{display:grid;gap:12px}.news-item{display:grid;grid-template-columns:110px 1fr auto;align-items:center;gap:20px;background:#fff;border-bottom:1px solid var(--line);padding:18px 20px;border-radius:12px}.news-item:hover{background:#f0f4ed}.news-item h3{font-size:17px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.news-item p{font-size:13px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.news-item .arrow{margin:0}
.safety-wrap{background:#e3eee4;border-radius:24px;padding:45px}.safety-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:45px;align-items:center}.safety h2{font-size:32px;line-height:1.3}.shield{width:82px;height:82px;border-radius:24px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-size:37px;margin-bottom:20px}.protect-list{display:grid;grid-template-columns:1fr 1fr;gap:12px}.protect-list div{background:#fff;border-radius:12px;padding:18px}.protect-list b{display:block;color:var(--forest);margin-bottom:4px}.protect-list span{font-size:13px;color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.step{position:relative;padding:0 24px;border-top:2px solid #b9c8be}.step:first-child{border-color:var(--forest);padding-left:0}.step-num{width:38px;height:38px;border-radius:50%;background:var(--lime);color:var(--forest-deep);display:grid;place-items:center;font-weight:850;margin-top:-20px;margin-bottom:18px}.step h3{font-size:18px}.step p{font-size:13px;color:var(--muted)}
.support{background:#eef1eb}.support-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:50px}.support-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:22px}.support-card{background:#fff;border:1px solid var(--line);padding:18px;border-radius:12px}.support-card b{display:block;color:var(--forest)}.support-card span{font-size:13px;color:var(--muted)}.faq{background:#fff;border-radius:16px;border:1px solid var(--line);overflow:hidden}.faq details{padding:18px 22px;border-bottom:1px solid var(--line)}.faq details:last-child{border:0}.faq summary{font-weight:750;cursor:pointer;color:var(--forest)}.faq p{color:var(--muted);font-size:14px;margin-top:9px}
.feedback-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}.feedback h2{font-size:32px;line-height:1.3}.feedback p{color:var(--muted);margin-top:12px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;color:var(--muted)}.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);background:#fff;border-radius:9px;padding:11px 13px;color:var(--ink);min-height:46px}.field textarea{min-height:105px;resize:vertical}.check{font-size:12px;color:var(--muted);margin:12px 0}.download-final{background:var(--forest);color:#fff;border-radius:24px;padding:38px 45px}.final-grid{display:grid;grid-template-columns:1.2fr 1fr .5fr;align-items:center;gap:25px}.download-final h2{font-size:29px;line-height:1.3}.download-final p{color:#c7d7cf;font-size:14px}.mini-device{width:72px;height:120px;border:4px solid #365f52;border-radius:14px;background:#e9f0e5;transform:rotate(8deg);justify-self:end}
.site-footer{background:#18221f;color:#c3d0c9;padding:58px 0 22px}.footer-grid{display:grid;grid-template-columns:1.4fr .8fr .8fr 1fr;gap:35px}.site-footer .logo{color:#fff}.site-footer h3{font-size:14px;color:#fff;margin-bottom:14px}.site-footer a{display:block;font-size:13px;color:#9daf a7;margin:7px 0}.site-footer a:hover{color:var(--lime)}.footer-brand p{font-size:13px;color:#91a49b;margin-top:14px;max-width:300px}.copyright{border-top:1px solid #35433d;margin-top:35px;padding-top:18px;font-size:12px;color:#82948b;display:flex;justify-content:space-between;gap:15px}.top-btn{position:fixed;right:22px;bottom:22px;width:43px;height:43px;border-radius:50%;background:var(--lime);color:var(--forest-deep);font-weight:900;z-index:10}
@media(max-width:1024px){.nav{gap:14px}.hero-grid{gap:30px}.channel-grid{grid-template-columns:1fr 1fr}.download-grid,.safety-grid,.support-grid,.feedback-grid{gap:30px}.footer-grid{grid-template-columns:1fr 1fr}.final-grid{grid-template-columns:1fr 1fr}.mini-device{display:none}}
@media(max-width:768px){.container{width:min(100% - 36px,var(--max))}.site-header{height:68px}.header-inner{gap:12px}.nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--paper);padding:14px 18px 20px;border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch;gap:0}.nav.open{display:flex}.nav a{padding:10px 0}.nav a.active:after{bottom:5px;right:auto;width:28px}.header-inner>.btn{margin-left:auto;min-height:38px;padding:0 12px;font-size:13px}.menu-toggle{display:block}.hero{padding:65px 0 45px}.hero-grid{grid-template-columns:1fr}.visual{min-height:330px}.strip,.stat-grid{grid-template-columns:1fr 1fr}.stat{padding:8px 15px}.stat:first-child{padding-left:0}.stat:nth-child(2){border-right:0}.section-head{display:block}.section-head h2{font-size:29px;margin-bottom:10px}section{padding:62px 0}.download-grid,.safety-grid,.support-grid,.feedback-grid,.news-layout{grid-template-columns:1fr}.news-layout{gap:28px}.topic-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}.topic:first-child{grid-row:span 1;grid-column:span 2;min-height:180px}.steps{grid-template-columns:1fr 1fr;gap:35px 0}.step{border-top:0;border-left:2px solid #b9c8be;padding:0 18px}.step:first-child{border-left-color:var(--forest);padding-left:18px}.step-num{margin:0 0 12px -38px}.safety-wrap{padding:28px 22px}.protect-list{grid-template-columns:1fr}.news-item{grid-template-columns:75px 1fr auto;gap:10px}.news-item p{display:none}.footer-grid{grid-template-columns:1fr 1fr}.copyright{display:block}.copyright span{display:block;margin-top:8px}}
@media(max-width:520px){.logo{font-size:18px}.logo-mark{width:30px;height:30px}.hero h1{font-size:35px}.hero-actions{flex-direction:column;align-items:stretch}.hero-actions .btn{width:100%}.channel-grid{grid-template-columns:1fr}.channel,.channel:nth-child(n){min-height:155px}.qr-area{align-items:flex-start}.install{display:grid;grid-template-columns:1fr}.timeline{grid-template-columns:1fr 1fr;gap:20px}.timeline-item,.timeline-item:first-child{padding-left:14px;border-left:2px solid var(--lime)}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.download-final{padding:28px 22px}.final-grid{grid-template-columns:1fr}.platforms span{flex:1;text-align:center}.footer-grid{grid-template-columns:1fr}.float-card{right:-3%;}.float-card.bottom{left:-3%}}

/* roulang page: article */
:root{
  --ink:#18221f;--muted:#68736d;--paper:#f5f6f2;--white:#fff;
  --forest:#1d5a4a;--forest-deep:#123b32;--lime:#b7d832;--mist:#e7ebe4;
  --line:#dce2da;--warm:#ecefe9;--radius:18px;--shadow:0 14px 38px rgba(20,43,35,.08);
  --max:1200px;
}
*{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;background:var(--paper);color:var(--ink);font-size:16px;line-height:1.82}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{height:78px;background:rgba(245,246,242,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
.header-inner{height:100%;display:flex;align-items:center;gap:34px}
.logo{display:flex;align-items:center;gap:10px;min-width:max-content;font-weight:850;font-size:21px;letter-spacing:-.04em}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-size:18px;line-height:1}
.logo small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;line-height:1.2;margin-top:2px}
.nav{display:flex;align-items:center;gap:25px;margin-left:auto}
.nav a{font-size:14px;color:#52615a;padding:25px 0;position:relative;white-space:nowrap;transition:color .2s ease}
.nav a:hover,.nav a.active{color:var(--forest)}
.nav a.active:after{content:"";height:3px;border-radius:4px;background:var(--lime);position:absolute;bottom:16px;left:0;right:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 20px;border-radius:10px;background:var(--forest);color:#fff;font-weight:750;transition:.25s ease}
.btn:hover{background:var(--forest-deep);color:#fff;transform:translateY(-2px)}
.btn:focus,.menu-toggle:focus,summary:focus{outline:3px solid rgba(183,216,50,.55);outline-offset:3px}
.btn-outline{background:transparent;color:var(--forest);border:1px solid #8ba79b}
.btn-outline:hover{background:var(--forest);color:#fff}
.btn-lime{background:var(--lime);color:var(--forest-deep)}
.btn-lime:hover{background:#c8e64a;color:var(--forest-deep)}
.menu-toggle{display:none;background:transparent;font-size:24px;color:var(--forest);padding:6px}
main{overflow:hidden}
section{padding:62px 0}
.article-hero{background:var(--forest-deep);color:#fff;padding:66px 0 58px;position:relative;overflow:hidden}
.article-hero:before,.article-hero:after{content:"";position:absolute;border:1px solid rgba(183,216,50,.2);border-radius:50%}
.article-hero:before{width:480px;height:480px;right:-130px;top:-255px}
.article-hero:after{width:180px;height:180px;right:18%;bottom:-125px}
.article-hero-inner{max-width:920px;position:relative}
.category-badge{display:inline-flex;align-items:center;gap:8px;border:1px solid rgba(183,216,50,.45);border-radius:30px;color:var(--lime);padding:5px 12px;font-size:13px;font-weight:700}
.category-badge:before{content:"";width:6px;height:6px;background:var(--lime);border-radius:50%}
.article-hero h1{font-size:clamp(34px,4.6vw,52px);line-height:1.24;letter-spacing:-.055em;margin:20px 0 18px;max-width:900px}
.article-meta{display:flex;align-items:center;gap:16px;flex-wrap:wrap;color:#bdd0c6;font-size:14px}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta i{width:4px;height:4px;border-radius:50%;background:var(--lime)}
.crumb-section{padding:22px 0;border-bottom:1px solid var(--line);background:#f9faf7}
.breadcrumbs{font-size:14px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.breadcrumbs a{color:var(--forest);transition:.2s}
.breadcrumbs a:hover{text-decoration:underline}
.breadcrumbs b{font-weight:500;color:#98a39c;padding:0 8px}
.reading-progress{height:3px;background:#d9e1d9;position:sticky;top:78px;z-index:15}
.reading-progress span{display:block;height:100%;width:0;background:var(--lime);transition:width .15s linear}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 280px;gap:62px;align-items:start}
.article-content{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(25px,4vw,52px);box-shadow:var(--shadow)}
.article-content>*:first-child{margin-top:0}
.article-content h2{font-size:29px;line-height:1.35;letter-spacing:-.035em;color:var(--forest-deep);margin:46px 0 17px}
.article-content h3{font-size:21px;line-height:1.5;margin:30px 0 12px;color:var(--ink)}
.article-content p{margin:0 0 20px;color:#33423b}
.article-content ul,.article-content ol{padding-left:24px;margin:0 0 22px}
.article-content li{margin:8px 0;padding-left:4px}
.article-content blockquote{margin:28px 0;padding:18px 23px;border-left:4px solid var(--lime);background:#f2f6ef;color:#345146;border-radius:0 12px 12px 0}
.article-content img{border-radius:14px;margin:28px auto 8px}
.article-content figure{margin:28px 0}
.article-content figcaption{text-align:center;font-size:13px;color:var(--muted);margin-top:9px}
.article-content table{width:100%;border-collapse:collapse;margin:24px 0;font-size:14px}
.article-content th,.article-content td{border:1px solid var(--line);padding:12px;text-align:left}
.article-content th{background:#edf2eb;color:var(--forest-deep)}
.article-aside{position:sticky;top:108px}
.side-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px;margin-bottom:16px}
.side-card h2{font-size:16px;color:var(--forest-deep);margin:0 0 12px;font-weight:800}
.toc a{display:block;font-size:14px;color:var(--muted);padding:8px 0;border-bottom:1px dashed #e2e7e1;transition:.2s}
.toc a:last-child{border:0}
.toc a:hover,.toc a.current{color:var(--forest);padding-left:5px}
.side-note{font-size:13px;color:var(--muted);line-height:1.7}
.download-card{background:var(--forest-deep);border-radius:var(--radius);color:#fff;display:grid;grid-template-columns:auto 1fr auto;gap:22px;align-items:center;padding:27px 32px;box-shadow:var(--shadow)}
.download-symbol{width:52px;height:52px;border-radius:16px;display:grid;place-items:center;background:var(--lime);color:var(--forest-deep);font-size:25px;font-weight:900}
.download-card h2{font-size:21px;margin:0 0 4px}
.download-card p{color:#bdd0c6;font-size:14px;margin:0}
.download-card .btn{white-space:nowrap}
.security-box{border:1px solid #b8d2c4;background:#eaf3ec;border-radius:var(--radius);padding:30px;display:grid;grid-template-columns:auto 1fr;gap:20px}
.security-icon{width:48px;height:48px;border-radius:14px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-size:23px}
.security-box h2{margin:0 0 8px;font-size:24px;color:var(--forest-deep)}
.security-box p{margin:0 0 12px;color:#426050}
.security-box ul{display:flex;gap:12px 28px;flex-wrap:wrap;margin:0;padding:0;list-style:none;font-size:14px;color:#345146}
.security-box li:before{content:"✓";color:var(--forest);font-weight:900;margin-right:7px}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px}
.section-head h2{font-size:32px;line-height:1.3;letter-spacing:-.045em;margin:0}
.section-head p{margin:0;color:var(--muted);max-width:470px}
.related-section{background:#e9ede7}
.related-grid{display:grid;grid-template-columns:1.25fr .9fr .9fr;gap:16px}
.related-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:23px;min-height:210px;display:flex;flex-direction:column;transition:.25s}
.related-card:hover{transform:translateY(-4px);border-color:var(--forest);box-shadow:var(--shadow)}
.related-card:first-child{background:var(--forest);color:#fff}
.related-card .tag{font-size:12px;color:var(--forest)}
.related-card:first-child .tag{color:var(--lime)}
.related-card h3{font-size:19px;line-height:1.45;margin:11px 0}
.related-card p{font-size:14px;color:var(--muted);margin:0 0 14px}
.related-card:first-child p{color:#c5d5cd}
.related-card time{font-size:13px;color:#89958e;margin-top:auto}
.related-card .card-arrow{margin-top:10px;color:var(--forest);font-size:20px;line-height:1}
.related-card:first-child .card-arrow{color:var(--lime)}
.article-nav-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.prev-next{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;min-height:112px;display:block;transition:.25s}
.prev-next:hover{border-color:var(--forest);transform:translateY(-3px)}
.prev-next small{display:block;color:var(--muted);font-size:12px;margin-bottom:7px}
.prev-next strong{font-size:16px;line-height:1.45;color:var(--forest-deep)}
.end-actions{margin-top:28px;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:25px 0 0;border-top:1px solid var(--line)}
.end-actions p{margin:0;color:var(--muted);font-size:14px}
.end-actions .actions{display:flex;gap:10px;flex-wrap:wrap}
.empty-content{text-align:center;padding:55px 20px}
.empty-content h2{margin:0 0 9px;color:var(--forest-deep)}
.empty-content p{color:var(--muted)}
.site-footer{background:#18221f;color:#d8e3dc;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:#fff;margin-bottom:15px}
.footer-brand p{font-size:14px;color:#aebdb5;max-width:270px}
.site-footer h3{font-size:14px;color:var(--lime);margin:4px 0 15px}
.site-footer a:not(.logo){display:block;color:#b7c5be;font-size:14px;margin:8px 0;transition:.2s}
.site-footer a:not(.logo):hover{color:var(--lime);padding-left:3px}
.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding:18px 0;display:flex;justify-content:space-between;gap:20px;color:#91a49b;font-size:12px}
.float-service{position:fixed;right:22px;bottom:22px;z-index:18;width:48px;height:48px;border-radius:15px;background:var(--forest);color:#fff;display:grid;place-items:center;box-shadow:0 10px 26px rgba(18,59,50,.28);font-weight:800;transition:.25s}
.float-service:hover{background:var(--forest-deep);color:var(--lime);transform:translateY(-3px)}
.back-top{position:fixed;right:22px;bottom:80px;z-index:18;width:48px;height:48px;border:1px solid var(--line);border-radius:15px;background:#fff;color:var(--forest);display:grid;place-items:center;font-size:20px;opacity:0;visibility:hidden;transition:.25s}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{background:var(--mist);transform:translateY(-3px)}
@media(max-width:1100px){
  .nav{gap:17px}.header-inner{gap:20px}.article-layout{grid-template-columns:minmax(0,1fr) 240px;gap:28px}.download-card{gap:15px}
}
@media(max-width:900px){
  .nav{display:none}.header-inner{justify-content:space-between}.header-download{margin-left:auto}.menu-toggle{display:block}
  .nav.open{display:flex;position:absolute;left:0;right:0;top:77px;background:#f5f6f2;padding:10px 24px 18px;box-shadow:0 14px 25px rgba(20,43,35,.08);flex-direction:column;align-items:stretch;gap:0;border-bottom:1px solid var(--line)}
  .nav.open a{padding:12px 0}.nav.open a.active:after{bottom:6px;right:auto;width:35px}
  .article-layout{grid-template-columns:1fr}.article-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:14px}.side-card{margin:0}.related-grid{grid-template-columns:1fr 1fr}.related-card:first-child{grid-column:span 2}.footer-grid{grid-template-columns:1.4fr 1fr 1fr}.footer-grid>div:last-child{grid-column:span 3}
}
@media(max-width:680px){
  .container{width:min(var(--max),calc(100% - 32px))}.site-header{height:68px}.logo{font-size:18px}.logo-mark{width:31px;height:31px;font-size:16px}.header-download{min-height:38px;padding:0 12px;font-size:13px}.article-hero{padding:48px 0 44px}.article-hero h1{font-size:34px}.reading-progress{top:68px}
  section{padding:48px 0}.article-content{padding:24px 20px;border-radius:15px}.article-content h2{font-size:25px;margin-top:37px}.article-content h3{font-size:19px}.article-aside{grid-template-columns:1fr}.download-card{grid-template-columns:auto 1fr;padding:24px}.download-card .btn{grid-column:1/-1;width:100%}.security-box{grid-template-columns:1fr;padding:24px;gap:14px}.section-head{display:block}.section-head h2{font-size:28px;margin-bottom:10px}.related-grid{grid-template-columns:1fr}.related-card:first-child{grid-column:auto}.article-nav-grid{grid-template-columns:1fr}.end-actions{align-items:flex-start;flex-direction:column}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:span 2}.footer-grid>div:last-child{grid-column:span 2}.copyright{display:block}.copyright span{display:block;margin:4px 0}.float-service{right:16px;bottom:16px}.back-top{right:16px;bottom:72px}
}
@media(max-width:420px){
  .header-download{font-size:0;min-width:39px;padding:0}.header-download:after{content:"↓";font-size:20px}.article-hero h1{font-size:30px}.article-meta{gap:9px;font-size:13px}.footer-grid{grid-template-columns:1fr}.footer-brand,.footer-grid>div:last-child{grid-column:auto}.article-content table{font-size:12px}.article-content th,.article-content td{padding:8px}
}

/* roulang page: category1 */
:root{
  --ink:#18221f;--muted:#68736d;--paper:#f5f6f2;--white:#fff;
  --forest:#1d5a4a;--forest-deep:#123b32;--lime:#b7d832;--mist:#e7ebe4;
  --line:#dce2da;--warm:#ecefe9;--radius:18px;--shadow:0 14px 38px rgba(20,43,35,.08);
  --max:1200px;
}
*{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;background:var(--paper);color:var(--ink);font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,textarea,select{font:inherit}
button{cursor:pointer;border:0}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}
.site-header{height:78px;background:rgba(245,246,242,.94);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;backdrop-filter:blur(12px)}
.header-inner{height:100%;display:flex;align-items:center;gap:30px}
.logo{display:flex;align-items:center;gap:10px;min-width:max-content;font-weight:850;font-size:21px;letter-spacing:-.04em}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-size:18px;line-height:1}
.logo small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;line-height:1.2;margin-top:1px}
.nav{display:flex;align-items:center;gap:25px;margin-left:auto}
.nav a{font-size:14px;color:#52615a;padding:25px 0;position:relative;white-space:nowrap;transition:color .2s ease}
.nav a:hover,.nav a.active{color:var(--forest)}
.nav a.active:after{content:"";height:3px;border-radius:4px;background:var(--lime);position:absolute;bottom:16px;left:0;right:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 20px;border-radius:10px;background:var(--forest);color:#fff;font-weight:750;transition:.25s ease;border:1px solid transparent}
.btn:hover{background:var(--forest-deep);transform:translateY(-2px);color:#fff}
.btn:focus,.menu-toggle:focus,summary:focus{outline:3px solid rgba(183,216,50,.55);outline-offset:3px}
.btn-outline{background:transparent;color:var(--forest);border-color:#8ba79b}
.btn-outline:hover{background:var(--forest);color:#fff}
.header-download{margin-left:4px;white-space:nowrap}
.menu-toggle{display:none;background:transparent;font-size:24px;color:var(--forest);padding:6px}
section{padding:82px 0}
.section-kicker{display:flex;align-items:center;gap:9px;color:var(--forest);font-weight:800;font-size:13px;letter-spacing:.08em}
.section-kicker:before{content:"";display:block;width:28px;height:2px;background:var(--lime)}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:34px;margin-bottom:34px}
.section-head h2{font-size:clamp(28px,3vw,38px);line-height:1.25;letter-spacing:-.055em;margin:12px 0 0}
.section-head p{max-width:500px;margin:0;color:var(--muted)}
.page-hero{background:var(--forest-deep);color:#fff;min-height:405px;position:relative;overflow:hidden;padding:72px 0 65px}
.page-hero:before{content:"";position:absolute;inset:0;background-image:linear-gradient(90deg,rgba(183,216,50,.13) 1px,transparent 1px),linear-gradient(rgba(183,216,50,.11) 1px,transparent 1px);background-size:48px 48px;mask-image:linear-gradient(90deg,#000 10%,transparent 80%)}
.page-hero:after{content:"";position:absolute;width:460px;height:460px;border:1px solid rgba(183,216,50,.28);border-radius:50%;right:7%;top:-185px;box-shadow:0 0 0 38px rgba(183,216,50,.05),0 0 0 76px rgba(183,216,50,.035)}
.hero-content{position:relative;z-index:1;max-width:820px}
.breadcrumb{display:flex;align-items:center;gap:9px;color:#aec0b7;font-size:13px;margin-bottom:28px}
.breadcrumb span{opacity:.6}
.hero-label{display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:800;color:var(--lime);letter-spacing:.08em}
.hero-label:before{content:"";height:8px;width:8px;background:var(--lime);border-radius:50%;box-shadow:0 0 0 6px rgba(183,216,50,.13)}
.page-hero h1{font-size:clamp(38px,5vw,58px);letter-spacing:-.07em;line-height:1.14;margin:16px 0 18px}
.page-hero p{margin:0;max-width:680px;color:#c6d4ce;font-size:17px}
.date-ruler{position:absolute;z-index:1;right:max(24px,calc((100vw - 1200px)/2));bottom:48px;display:flex;gap:24px;color:#a9bbb2;font-size:12px;letter-spacing:.08em}
.date-ruler b{color:var(--lime);font-size:16px}
.filter-wrap{padding:25px 0;border-bottom:1px solid var(--line);background:#fff}
.filter-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.filter-label{font-size:13px;color:var(--muted);font-weight:700;margin-right:5px}
.filter-chip{padding:7px 15px;border:1px solid var(--line);border-radius:999px;background:#fff;color:#58655f;font-size:13px;transition:.2s}
.filter-chip:hover,.filter-chip.active{background:var(--forest);border-color:var(--forest);color:#fff}
.news-layout{display:grid;grid-template-columns:1.02fr .98fr;gap:25px;align-items:stretch}
.lead-news{position:relative;background:var(--forest);color:#fff;padding:42px;border-radius:var(--radius);overflow:hidden;min-height:430px;display:flex;flex-direction:column;justify-content:flex-end;transition:.25s}
.lead-news:before{content:"";position:absolute;width:270px;height:270px;border:1px solid rgba(183,216,50,.35);border-radius:50%;right:-72px;top:-88px}
.lead-news:after{content:"01";position:absolute;top:32px;left:37px;color:rgba(183,216,50,.31);font-size:76px;font-weight:900;line-height:1}
.lead-news:hover{transform:translateY(-4px);box-shadow:0 18px 42px rgba(18,59,50,.22)}
.type-tag{display:inline-flex;width:max-content;align-items:center;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:800;line-height:1.4;background:#e7efe9;color:var(--forest)}
.lead-news .type-tag{background:rgba(183,216,50,.17);color:var(--lime)}
.lead-news h3{font-size:29px;line-height:1.35;letter-spacing:-.04em;margin:16px 0 12px;position:relative}
.lead-news p{color:#cbd9d3;margin:0;max-width:480px;font-size:15px;position:relative}
.news-meta{display:flex;gap:14px;align-items:center;color:#82938a;font-size:13px;margin-top:18px}
.lead-news .news-meta{color:#b2c3ba}
.read-link{display:inline-flex;align-items:center;gap:8px;font-weight:800;color:var(--forest);font-size:14px;margin-top:19px;transition:.2s}
.read-link:after{content:"→";font-size:19px;line-height:1;transition:transform .2s}
.read-link:hover:after{transform:translateX(4px)}
.lead-news .read-link{color:var(--lime)}
.news-stack{display:grid;gap:13px}
.news-entry{background:var(--white);border:1px solid var(--line);padding:23px 24px;border-radius:15px;transition:.25s;display:block}
.news-entry:hover{transform:translateY(-3px);border-color:var(--forest);box-shadow:var(--shadow)}
.news-entry h3{font-size:18px;line-height:1.45;letter-spacing:-.025em;margin:10px 0 7px}
.news-entry p{margin:0;color:var(--muted);font-size:13px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.notice-section{padding-top:18px}
.notice-card{background:var(--ink);color:#fff;border-radius:var(--radius);padding:38px 42px;display:grid;grid-template-columns:auto 1fr auto;gap:25px;align-items:center;position:relative;overflow:hidden}
.notice-card:after{content:"";position:absolute;width:230px;height:230px;border:1px solid rgba(183,216,50,.18);border-radius:50%;right:8%;bottom:-160px}
.notice-icon{width:54px;height:54px;display:grid;place-items:center;border-radius:15px;background:var(--lime);color:var(--forest-deep);font-size:25px;font-weight:900}
.notice-card h2{font-size:22px;letter-spacing:-.03em;margin:0 0 4px}
.notice-card p{margin:0;color:#b6c6bf;font-size:14px}
.notice-card .btn{position:relative;z-index:1}
.version-area{background:var(--warm)}
.version-line{position:relative;margin-top:6px}
.version-line:before{content:"";position:absolute;left:12px;right:12px;top:24px;height:1px;background:#bdc9c0}
.version-grid{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.version-item{position:relative;padding-top:55px}
.version-item:before{content:"";position:absolute;top:16px;left:0;width:18px;height:18px;border:4px solid var(--warm);border-radius:50%;background:var(--forest)}
.version-item:first-child:before{background:var(--lime)}
.version-date{font-size:13px;color:var(--forest);font-weight:850}
.version-item h3{font-size:18px;line-height:1.4;margin:7px 0}
.version-item p{font-size:13px;color:var(--muted);margin:0}
.topic-cloud{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.topic-cloud span{padding:11px 17px;background:#fff;border:1px solid var(--line);border-radius:999px;color:#53635c;font-weight:700;font-size:14px;transition:.2s}
.topic-cloud span:nth-child(3n+1){background:#e7efe9;border-color:#d2e0d7;color:var(--forest)}
.topic-cloud span:hover{transform:translateY(-2px);border-color:var(--forest)}
.reading-guide{display:grid;grid-template-columns:.85fr 1.15fr;gap:25px;align-items:stretch}
.reading-panel{background:#e5ede7;border-radius:var(--radius);padding:35px}
.reading-panel h2{font-size:27px;line-height:1.3;letter-spacing:-.05em;margin:12px 0}
.reading-panel p{color:#52635a;margin:0}
.reading-notes{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.reading-note{background:#fff;border:1px solid var(--line);border-radius:14px;padding:23px 19px}
.reading-note b{display:grid;place-items:center;width:32px;height:32px;background:var(--forest);color:var(--lime);border-radius:9px;font-size:14px;margin-bottom:14px}
.reading-note h3{font-size:16px;margin:0 0 5px}
.reading-note p{font-size:13px;color:var(--muted);margin:0;line-height:1.7}
.faq-area{background:#fff}
.faq-grid{display:grid;grid-template-columns:.82fr 1.18fr;gap:54px}
.faq-intro{padding-top:8px}
.faq-intro h2{font-size:34px;line-height:1.28;letter-spacing:-.055em;margin:14px 0}
.faq-intro p{color:var(--muted);margin-bottom:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line);padding:17px 0}
.faq-list summary{list-style:none;font-weight:800;cursor:pointer;display:flex;justify-content:space-between;gap:20px;align-items:center}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary:after{content:"＋";font-size:23px;color:var(--forest);font-weight:400;transition:.2s}
.faq-list details[open] summary:after{content:"−"}
.faq-list details p{margin:13px 36px 3px 0;color:var(--muted);font-size:14px}
.bottom-actions{padding:66px 0 92px}
.action-band{background:var(--forest-deep);border-radius:var(--radius);padding:42px 46px;color:#fff;display:flex;justify-content:space-between;gap:30px;align-items:center;position:relative;overflow:hidden}
.action-band:before{content:"";position:absolute;right:30px;top:-98px;width:270px;height:270px;border:1px solid rgba(183,216,50,.25);border-radius:50%}
.action-band h2{font-size:28px;letter-spacing:-.045em;margin:0 0 6px;position:relative}
.action-band p{margin:0;color:#bbcbc4;font-size:14px;position:relative}
.action-links{display:flex;gap:12px;flex-wrap:wrap;position:relative}
.action-band .btn-outline{color:#fff;border-color:#79978c}
.site-footer{background:#18221f;color:#d3dfd8;padding:60px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.45fr .85fr .85fr 1fr;gap:44px;padding-bottom:43px}
.site-footer .logo{color:#fff;font-size:20px}
.site-footer .logo small{color:#91a49b}
.footer-brand p{color:#9eafa7;font-size:14px;margin:18px 0 0;max-width:280px}
.site-footer h3{font-size:14px;color:var(--lime);margin:4px 0 14px}
.site-footer a:not(.logo){display:block;color:#aebeb7;font-size:14px;margin:7px 0;transition:.2s}
.site-footer a:not(.logo):hover{color:var(--lime);transform:translateX(3px)}
.copyright{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#91a49b;font-size:12px}
.float-service{position:fixed;right:22px;bottom:23px;z-index:40;width:50px;height:50px;border-radius:15px;background:var(--forest);color:#fff;display:grid;place-items:center;box-shadow:0 12px 30px rgba(18,59,50,.25);font-size:20px;transition:.25s}
.float-service:hover{background:var(--forest-deep);transform:translateY(-3px);color:var(--lime)}
.to-top{position:fixed;right:22px;bottom:83px;z-index:40;width:42px;height:42px;border:1px solid var(--line);border-radius:13px;background:#fff;color:var(--forest);display:grid;place-items:center;font-size:18px;opacity:0;visibility:hidden;transition:.25s}
.to-top.show{opacity:1;visibility:visible}
.to-top:hover{background:var(--forest);color:#fff}
@media(max-width:1100px){
  .nav{gap:16px}.nav a{font-size:13px}.header-download{padding:0 14px}.date-ruler{right:28px}.faq-grid{gap:30px}
}
@media(max-width:900px){
  .site-header{height:70px}.header-inner{gap:15px}.nav{position:absolute;top:70px;left:0;right:0;margin:0;padding:12px 24px 20px;background:var(--paper);border-bottom:1px solid var(--line);display:none;flex-direction:column;align-items:stretch;gap:0}.nav.open{display:flex}.nav a{padding:11px 0;font-size:15px}.nav a.active:after{bottom:5px;right:auto;width:28px}.menu-toggle{display:block;margin-left:auto}.header-download{font-size:13px;min-height:40px;padding:0 13px}.page-hero{padding:62px 0 112px}.date-ruler{left:24px;bottom:35px;right:auto}.news-layout,.reading-guide,.faq-grid{grid-template-columns:1fr}.version-grid{grid-template-columns:1fr 1fr}.version-line:before{display:none}.version-item{padding:19px;border:1px solid var(--line);background:#fff;border-radius:13px}.version-item:before{top:12px;right:14px;left:auto}.reading-notes{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1.3fr 1fr 1fr}
}
@media(max-width:640px){
  body{font-size:15px}.container{width:min(var(--max),calc(100% - 32px))}.logo{font-size:18px}.logo-mark{width:31px;height:31px;font-size:16px}.header-download{display:none}.page-hero{min-height:355px;padding:50px 0 104px}.page-hero h1{font-size:38px}.page-hero p{font-size:15px}.date-ruler{gap:14px;font-size:11px}.section-head{display:block;margin-bottom:25px}.section-head p{margin-top:13px}.news-layout{gap:14px}.lead-news{min-height:360px;padding:28px}.lead-news h3{font-size:24px}.news-entry{padding:19px}.notice-card{grid-template-columns:1fr;padding:29px}.notice-icon{width:46px;height:46px}.notice-card .btn{width:max-content}.version-grid{grid-template-columns:1fr;gap:10px}.reading-panel{padding:28px}.reading-notes{grid-template-columns:1fr;gap:10px}.faq-grid{gap:20px}.faq-intro h2{font-size:29px}.action-band{padding:31px 27px;display:block}.action-band h2{font-size:25px}.action-links{margin-top:22px}.copyright{display:block}.copyright span{display:block;margin:4px 0}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-brand{grid-column:1/-1}section{padding:62px 0}.bottom-actions{padding:42px 0 62px}.float-service{right:16px;bottom:15px}.to-top{right:16px;bottom:73px}
}
@media(max-width:420px){
  .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.page-hero h1{font-size:34px}.action-links .btn{width:100%}.date-ruler b{font-size:14px}
}

/* roulang page: category2 */
:root{
      --ink:#18221f;--muted:#68736d;--paper:#f5f6f2;--white:#fff;
      --forest:#1d5a4a;--forest-deep:#123b32;--lime:#b7d832;--mist:#e7ebe4;
      --line:#dce2da;--warm:#ecefe9;--radius:18px;
      --shadow:0 14px 38px rgba(20,43,35,.08);--max:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:78px;background:rgba(245,246,242,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;min-width:max-content;font-weight:850;font-size:21px;letter-spacing:-.04em}
    .logo-mark{width:34px;height:34px;border-radius:11px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-size:18px}
    .logo small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;line-height:1}
    .nav{display:flex;align-items:center;gap:25px;margin-left:auto}
    .nav a{font-size:14px;color:#52615a;padding:25px 0;position:relative;white-space:nowrap}
    .nav a:hover,.nav a.active{color:var(--forest)}
    .nav a.active:after{content:"";height:3px;border-radius:4px;background:var(--lime);position:absolute;bottom:16px;left:0;right:0}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 20px;border-radius:10px;background:var(--forest);color:#fff;font-weight:750;transition:.25s ease}
    .btn:hover{background:var(--forest-deep);color:#fff;transform:translateY(-2px)}
    .btn-outline{background:transparent;color:var(--forest);border:1px solid #8ba79b}
    .btn-outline:hover{background:var(--forest);color:#fff}
    .btn-lime{background:var(--lime);color:var(--forest-deep)}
    .btn-lime:hover{background:#c8e64a;color:var(--forest-deep)}
    .menu-toggle{display:none;background:transparent;font-size:24px;color:var(--forest)}
    section{padding:86px 0}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--forest);font-size:13px;font-weight:750;letter-spacing:.04em}
    .eyebrow:before{content:"";width:25px;height:2px;background:var(--lime)}
    .hero{background:var(--forest-deep);color:#fff;padding:82px 0 74px;position:relative;overflow:hidden}
    .hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(183,216,50,.2);border-radius:50%}
    .hero:before{width:470px;height:470px;right:-130px;top:-210px}
    .hero:after{width:210px;height:210px;left:47%;bottom:-150px}
    .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center;position:relative;z-index:1}
    .hero h1{font-size:clamp(38px,5vw,58px);line-height:1.18;letter-spacing:-.06em;margin:20px 0}
    .hero h1 em{font-style:normal;color:var(--lime)}
    .hero p{color:#c8d4cd;max-width:600px;font-size:17px}
    .hero-actions{display:flex;gap:12px;margin:29px 0}
    .hero .btn-outline{color:#fff;border-color:#6e9185}
    .rule-visual{min-height:310px;border:1px solid rgba(214,235,220,.25);border-radius:24px;padding:25px;position:relative;background:rgba(255,255,255,.055)}
    .rule-visual:before{content:"01  02  03  04";display:block;color:var(--lime);font:700 13px/1.2 monospace;letter-spacing:10px}
    .table-line{height:1px;background:rgba(255,255,255,.25);margin:28px 0}
    .orbit{width:220px;height:220px;border:1px solid rgba(183,216,50,.55);border-radius:50%;margin:15px auto;position:relative}
    .orbit:before,.orbit:after{content:"";position:absolute;border-radius:50%;background:var(--lime)}
    .orbit:before{width:14px;height:14px;left:20px;top:42px}
    .orbit:after{width:8px;height:8px;right:30px;bottom:38px}
    .orbit span{position:absolute;inset:34px;border:1px dashed rgba(255,255,255,.4);border-radius:50%}
    .visual-note{display:flex;justify-content:space-between;color:#b9cbc1;font-size:13px}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:32px}
    .section-head h2{font-size:34px;line-height:1.25;letter-spacing:-.05em;margin:0}
    .section-head p{color:var(--muted);max-width:520px;margin:0}
    .path-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .path-card,.term-card,.faq-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;transition:.25s ease}
    .path-card:hover,.term-card:hover{transform:translateY(-4px);border-color:var(--forest);box-shadow:var(--shadow)}
    .number{color:var(--forest);font:800 31px/1 monospace;display:block;margin-bottom:22px}
    .path-card h3,.term-card h3{font-size:20px;margin:0 0 8px}
    .path-card p,.term-card p{color:var(--muted);font-size:14px;margin:0}
    .guide-layout{display:grid;grid-template-columns:1.2fr .8fr;gap:18px;align-items:stretch}
    .guide-feature{background:var(--forest);color:#fff;border-radius:var(--radius);padding:34px;min-height:330px;display:flex;flex-direction:column;justify-content:end;position:relative;overflow:hidden}
    .guide-feature:after{content:"J9";position:absolute;right:25px;top:20px;font-size:100px;font-weight:900;color:rgba(183,216,50,.15)}
    .guide-feature p{color:#c9d8d1;margin:10px 0 18px}
    .guide-list{display:grid;gap:12px}
    .article-card{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;transition:.25s}
    .article-card:hover{transform:translateY(-3px);border-color:var(--forest);box-shadow:var(--shadow)}
    .tag{font-size:12px}
    .article-card h3{font-size:18px;line-height:1.45;margin:7px 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .article-card p{color:var(--muted);font-size:13px;margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .meta{display:block;color:#87928b;font-size:12px;margin-top:10px}
    .term-section{background:#e8ece6}
    .term-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .term-card{padding:22px}
    .term-card h3{font-size:17px;color:var(--forest)}
    .process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
    .process-item{padding:28px 22px 10px;border-right:1px solid var(--line);position:relative}
    .process-item:last-child{border-right:0}
    .process-item:before{content:"";width:10px;height:10px;background:var(--lime);border:3px solid var(--paper);border-radius:50%;position:absolute;top:-6px;left:22px}
    .process-item strong{display:block;color:var(--forest);font-size:18px;margin-bottom:8px}
    .process-item span{color:var(--muted);font-size:14px}
    .notice{background:#eef5e6;border:1px solid #d7e7c4;border-radius:var(--radius);padding:30px 34px;display:flex;gap:20px;align-items:flex-start}
    .notice-icon{width:42px;height:42px;border-radius:12px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-weight:800;flex:none}
    .notice h2{font-size:24px;margin:0 0 7px}
    .notice p{color:#58675e;margin:0;font-size:15px}
    .faq-layout{display:grid;grid-template-columns:.75fr 1.25fr;gap:42px;align-items:start}
    .support-card{background:var(--forest-deep);color:#fff;border-radius:var(--radius);padding:30px}
    .support-card h2{font-size:27px;line-height:1.35;margin:0 0 12px}
    .support-card p{color:#bdcdc4;font-size:14px}
    .support-links{display:grid;gap:9px;margin-top:24px}
    .support-links a{border-bottom:1px solid rgba(255,255,255,.2);padding:8px 0;color:#e4eee8}
    .support-links a:hover{color:var(--lime)}
    .faq-box{padding:0;overflow:hidden}
    details{border-bottom:1px solid var(--line);padding:0 22px}
    details:last-child{border-bottom:0}
    summary{list-style:none;cursor:pointer;padding:19px 0;font-weight:750;display:flex;justify-content:space-between;gap:20px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";color:var(--forest);font-size:22px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;padding:0 0 18px;margin:0}
    .bottom-cta{background:var(--forest-deep);color:#fff;padding:48px 0}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:24px}
    .cta-inner h2{margin:0;font-size:30px}
    .cta-inner p{color:#bfd0c6;margin:6px 0 0}
    .site-footer{background:#18221f;color:#dce7e0;padding:62px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:34px}
    .footer-brand p{color:#91a49b;font-size:14px;max-width:260px;margin-top:18px}
    .site-footer .logo{color:#fff}
    .site-footer .logo small{color:#91a49b}
    .site-footer h3{font-size:14px;color:var(--lime);margin:4px 0 15px}
    .site-footer a:not(.logo){display:block;color:#b9c8c0;font-size:14px;margin:7px 0}
    .site-footer a:hover{color:var(--lime)}
    .copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:42px;padding-top:18px;color:#91a49b;font-size:12px;display:flex;justify-content:space-between;gap:15px}
    .top-btn{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border-radius:12px;background:var(--lime);color:var(--forest-deep);font-weight:800;z-index:15;box-shadow:var(--shadow)}
    @media(max-width:992px){
      .header-inner{gap:16px}.nav{gap:15px}.nav a{font-size:13px}
      .hero-grid,.faq-layout{grid-template-columns:1fr;gap:35px}
      .term-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .site-header{height:68px}.container{width:min(var(--max),calc(100% - 36px))}
      .nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 18px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}
      .nav.open{display:flex}.nav a{padding:11px 0}.nav a.active:after{bottom:5px;right:auto;width:35px}
      .menu-toggle{display:block;margin-left:auto}.header-inner>.btn{min-height:38px;padding:0 12px;font-size:13px}
      section{padding:62px 0}.hero{padding:65px 0 56px}.hero h1{font-size:38px}
      .hero-actions{flex-wrap:wrap}.guide-layout,.path-grid{grid-template-columns:1fr}
      .term-grid,.process-grid{grid-template-columns:1fr 1fr}
      .process-item:nth-child(2){border-right:0}.process-item:nth-child(n+3){border-top:1px solid var(--line)}
      .section-head,.cta-inner{display:block}.section-head p{margin-top:12px}.cta-inner .btn{margin-top:20px}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 32px)}.logo{font-size:17px}.logo-mark{width:31px;height:31px}
      .hero h1{font-size:33px}.hero p{font-size:15px}.rule-visual{min-height:260px}
      .term-grid,.process-grid,.footer-grid{grid-template-columns:1fr}
      .process-item{border-right:0;border-bottom:1px solid var(--line);padding-left:22px}
      .process-item:last-child{border-bottom:0}.process-item:nth-child(n+3){border-top:0}
      .notice{padding:24px 20px}.copyright{display:block}.copyright span{display:block;margin:5px 0}
      .top-btn{right:16px;bottom:16px}
    }

/* roulang page: category3 */
:root{
      --ink:#18221f;--muted:#68736d;--paper:#f5f6f2;--white:#fff;
      --forest:#1d5a4a;--forest-deep:#123b32;--lime:#b7d832;--mist:#e7ebe4;
      --line:#dce2da;--warm:#ecefe9;--radius:18px;
      --shadow:0 14px 38px rgba(20,43,35,.08);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:78px;background:rgba(245,246,242,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;min-width:max-content;font-weight:850;font-size:21px;letter-spacing:-.04em}
    .logo-mark{width:34px;height:34px;border-radius:11px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-size:18px}
    .logo small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;line-height:1}
    .nav{display:flex;align-items:center;gap:25px;margin-left:auto}
    .nav a{font-size:14px;color:#52615a;padding:25px 0;position:relative;white-space:nowrap}
    .nav a:hover,.nav a.active{color:var(--forest)}
    .nav a.active:after{content:"";height:3px;border-radius:4px;background:var(--lime);position:absolute;bottom:16px;left:0;right:0}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 20px;border-radius:10px;background:var(--forest);color:#fff;font-weight:750;transition:.25s ease}
    .btn:hover{background:var(--forest-deep);transform:translateY(-2px);color:#fff}
    .btn-outline{background:transparent;color:var(--forest);border:1px solid #8ba79b}
    .btn-outline:hover{background:var(--forest);color:#fff}
    .btn-lime{background:var(--lime);color:var(--forest-deep)}
    .btn-lime:hover{background:#c8e64a;color:var(--forest-deep)}
    .menu-toggle{display:none;background:transparent;font-size:24px;color:var(--forest)}
    .hero{background:var(--forest-deep);color:#fff;padding:82px 0 70px;overflow:hidden;position:relative}
    .hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(183,216,50,.2);border-radius:50%;pointer-events:none}
    .hero:before{width:560px;height:560px;right:-180px;top:-260px}
    .hero:after{width:300px;height:300px;left:-180px;bottom:-210px}
    .hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;position:relative;z-index:1}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:8px;color:var(--lime);font-size:13px;font-weight:750;letter-spacing:.04em}
    .eyebrow:before{content:"";width:25px;height:2px;background:var(--lime)}
    .hero h1{font-size:clamp(36px,5vw,58px);line-height:1.18;letter-spacing:-.06em;margin:20px 0}
    .hero h1 em{font-style:normal;color:var(--lime)}
    .hero p{color:#c8d4cd;max-width:590px;font-size:17px}
    .hero-actions{display:flex;gap:12px;margin:30px 0}
    .hero .btn-outline{color:#fff;border-color:#6e9185}
    .trust-row{display:flex;gap:18px;flex-wrap:wrap;color:#b7c8c0;font-size:13px}
    .trust-row span{display:flex;align-items:center;gap:6px}
    .trust-row i{width:7px;height:7px;background:var(--lime);border-radius:50%}
    .device-stage{height:345px;position:relative;display:flex;justify-content:center;align-items:center}
    .device{width:190px;height:330px;background:#0a211b;border:8px solid #42675b;border-radius:30px;box-shadow:0 25px 55px rgba(0,0,0,.3);padding:15px;position:relative;transform:rotate(7deg)}
    .device:before{content:"";width:60px;height:5px;border-radius:5px;background:#78958a;position:absolute;top:8px;left:58px}
    .screen{height:100%;border-radius:18px;background:#f2f5ef;padding:20px 12px;color:var(--ink)}
    .screen-top{height:42px;border-radius:10px;background:var(--forest);margin-bottom:12px}
    .screen-line{height:10px;border-radius:8px;background:#c8d7cc;margin:10px 0}
    .screen-line.short{width:58%}
    .screen-tile{height:70px;border-radius:12px;background:#dfe9dd;margin-top:15px}
    .orbit-card{position:absolute;background:#fff;color:var(--ink);border-radius:14px;padding:15px 18px;box-shadow:var(--shadow);font-size:13px}
    .orbit-card strong{display:block;color:var(--forest);font-size:18px}
    .orbit-card.one{right:4%;top:24px}.orbit-card.two{left:2%;bottom:32px}
    .hero-strip{background:#214f42;border-top:1px solid rgba(255,255,255,.12);padding:17px 0;color:#d8e4dd}
    .strip-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .strip-grid span{font-size:14px;border-right:1px solid rgba(255,255,255,.18)}
    .strip-grid span:last-child{border:0}
    section{padding:86px 0}
    .section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:32px}
    .section-head h2{font-size:34px;line-height:1.25;letter-spacing:-.05em;margin:0}
    .section-head p{color:var(--muted);max-width:520px;margin:0}
    .download-panel{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
    .platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .platform-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:27px;min-height:255px;transition:.25s}
    .platform-card:hover{transform:translateY(-4px);border-color:var(--forest);box-shadow:var(--shadow)}
    .platform-icon{width:48px;height:48px;background:var(--mist);color:var(--forest);border-radius:14px;display:grid;place-items:center;font-size:23px;font-weight:800;margin-bottom:18px}
    .platform-card h3{font-size:21px;margin:0 0 8px}
    .platform-card p{font-size:14px;color:var(--muted);min-height:54px}
    .qr-mini{width:58px;height:58px;border:6px solid #fff;outline:1px solid var(--line);background:repeating-linear-gradient(45deg,#183d32 0 4px,#fff 4px 8px);float:right}
    .check-section{background:var(--warm)}
    .check-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:52px;align-items:center}
    .check-list{display:grid;grid-template-columns:1fr 1fr;gap:14px}
    .check-item{background:#fff;border-radius:14px;padding:20px;border:1px solid var(--line)}
    .check-item b{display:block;color:var(--forest);font-size:17px;margin-bottom:4px}
    .check-item span{display:block;color:var(--muted);font-size:13px}
    .check-art{min-height:270px;background:var(--forest);border-radius:var(--radius);padding:32px;color:#fff;position:relative;overflow:hidden}
    .check-art:after{content:"✓";position:absolute;right:32px;bottom:-28px;font-size:190px;line-height:1;color:var(--lime);opacity:.2}
    .check-art h3{font-size:26px;max-width:240px}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
    .step{padding:26px 22px 10px;border-right:1px solid var(--line);position:relative}
    .step:last-child{border:0}
    .step-no{color:var(--forest);font-weight:850;font-size:14px;letter-spacing:.1em}
    .step h3{font-size:19px;margin:10px 0 5px}
    .step p{font-size:13px;color:var(--muted);margin:0}
    .preview-section{background:#e8ece6}
    .preview-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:20px}
    .preview-main,.preview-side{border-radius:var(--radius);padding:30px;background:var(--forest);color:#fff;min-height:245px}
    .preview-side{background:#fff;color:var(--ink)}
    .preview-main h3,.preview-side h3{font-size:24px;margin-top:14px}
    .interface-bars{display:flex;gap:9px;margin-top:28px;align-items:end}
    .interface-bars i{display:block;background:var(--lime);width:18%;height:75px;border-radius:8px 8px 0 0;opacity:.9}
    .interface-bars i:nth-child(2){height:125px}.interface-bars i:nth-child(3){height:94px}.interface-bars i:nth-child(4){height:150px}
    .feature-list{display:grid;gap:12px;margin-top:20px}
    .feature-list div{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding-bottom:10px;font-size:14px}
    .feature-list b{color:var(--forest)}
    .faq-section{background:#fff}
    .faq-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:60px}
    .faq-intro{background:var(--forest-deep);color:#fff;border-radius:var(--radius);padding:32px;min-height:240px}
    .faq-intro h2{font-size:30px;line-height:1.3}
    .faq-intro p{color:#c8d4cd;font-size:14px}
    details{border-bottom:1px solid var(--line);padding:18px 0}
    summary{cursor:pointer;font-weight:750;list-style:none;display:flex;justify-content:space-between;gap:20px}
    summary:after{content:"+";color:var(--forest);font-size:23px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{color:var(--muted);font-size:14px;margin:12px 28px 0 0}
    .safe-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .safe-card{padding:31px;border-radius:var(--radius);background:#dfeadf;border:1px solid #c9dcca}
    .safe-card.dark{background:var(--forest);color:#fff;border-color:var(--forest)}
    .safe-card h3{font-size:23px;margin:0 0 12px}
    .safe-card p{font-size:14px;color:var(--muted)}
    .safe-card.dark p{color:#c8d4cd}
    .safe-card ul{padding-left:20px;color:var(--muted);font-size:14px}
    .safe-card.dark ul{color:#d7e4dc}
    .resource-section{padding-top:20px}
    .resource-list{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .resource{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;transition:.25s}
    .resource:hover{transform:translateY(-3px);border-color:var(--forest)}
    .resource .tag{color:var(--forest);font-size:12px}
    .resource h3{font-size:18px;line-height:1.45;margin:8px 0}
    .resource p{font-size:13px;color:var(--muted);margin:0}
    .cta-band{background:var(--forest-deep);color:#fff;border-radius:var(--radius);padding:34px 38px;display:flex;align-items:center;justify-content:space-between;gap:25px}
    .cta-band h2{font-size:29px;margin:0 0 5px}
    .cta-band p{color:#c8d4cd;margin:0;font-size:14px}
    .site-footer{background:#18221f;color:#dce7e0;padding:58px 0 18px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:38px}
    .footer-brand .logo{color:#fff;margin-bottom:14px}.footer-brand p{color:#9caf a3;color:#91a49b;font-size:13px;max-width:260px}
    .site-footer h3{font-size:15px;color:#fff;margin:0 0 13px}
    .site-footer a:not(.logo){display:block;color:#91a49b;font-size:13px;margin:5px 0;transition:.2s}
    .site-footer a:hover{color:var(--lime)}
    .copyright{border-top:1px solid #34423b;margin-top:38px;padding-top:16px;display:flex;justify-content:space-between;gap:15px;color:#81958a;font-size:12px}
    .top-btn{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border-radius:50%;background:var(--lime);color:var(--forest-deep);font-weight:800;z-index:10;box-shadow:var(--shadow)}
    @media(max-width:992px){
      .nav{gap:14px}.header-inner{gap:18px}.hero-grid,.check-grid,.faq-grid{grid-template-columns:1fr;gap:35px}
      .hero{padding-top:65px}.device-stage{max-width:560px;margin:auto}
      .footer-grid{grid-template-columns:1fr 1fr}.platform-grid,.resource-list{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:768px){
      .site-header{height:68px}.header-inner{justify-content:space-between}.nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:12px 24px;flex-direction:column;align-items:stretch;gap:0;box-shadow:var(--shadow)}
      .nav.open{display:flex}.nav a{padding:11px 0}.nav a.active:after{bottom:5px;right:auto;width:34px}.menu-toggle{display:block}
      .header-inner>.btn{min-height:39px;padding:0 13px;font-size:13px;margin-left:auto;margin-right:8px}
      .container{width:min(var(--max),calc(100% - 36px))}.hero h1{font-size:38px}.strip-grid{grid-template-columns:1fr 1fr;gap:8px}.strip-grid span{border:0}
      section{padding:62px 0}.section-head{display:block}.section-head p{margin-top:12px}.platform-grid,.safe-grid,.preview-grid,.resource-list{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr;border-top:0}.step{border-right:0;border-bottom:1px solid var(--line);padding-left:0}
      .check-list{grid-template-columns:1fr}.cta-band{display:block;padding:28px}.cta-band .btn{margin-top:20px}.copyright{display:block}.copyright span{display:block;margin-top:5px}
    }
    @media(max-width:480px){
      .logo{font-size:18px}.logo-mark{width:31px;height:31px}.hero-actions{flex-direction:column;align-items:stretch}.device-stage{transform:scale(.88);margin:-20px -25px}
      .orbit-card.one{right:0}.orbit-card.two{left:0}.hero h1{font-size:34px}.footer-grid{grid-template-columns:1fr}.site-footer{padding-top:45px}
    }

/* roulang page: category4 */
:root{
      --ink:#18221f;--muted:#68736d;--paper:#f5f6f2;--white:#fff;
      --forest:#1d5a4a;--forest-deep:#123b32;--lime:#b7d832;--mist:#e7ebe4;
      --line:#dce2da;--warm:#ecefe9;--radius:18px;
      --shadow:0 14px 38px rgba(20,43,35,.08);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer;border:0}
    .container{width:min(var(--max),calc(100% - 48px));margin:auto}
    .site-header{height:78px;background:rgba(245,246,242,.95);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;backdrop-filter:blur(12px)}
    .header-inner{height:100%;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;min-width:max-content;font-weight:850;font-size:21px;letter-spacing:-.04em}
    .logo-mark{width:34px;height:34px;border-radius:11px;background:var(--forest);color:var(--lime);display:grid;place-items:center;font-size:16px}
    .logo small{display:block;color:var(--muted);font-size:10px;letter-spacing:.08em;line-height:1}
    .nav{display:flex;align-items:center;gap:25px;margin-left:auto}
    .nav a{font-size:14px;color:#52615a;padding:25px 0;position:relative;white-space:nowrap}
    .nav a:hover,.nav a.active{color:var(--forest)}
    .nav a.active:after{content:"";height:3px;border-radius:4px;background:var(--lime);position:absolute;bottom:16px;left:0;right:0}
    .header-download{margin-left:8px;min-height:40px!important;padding:0 16px!important;font-size:13px!important}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;min-height:46px;padding:0 20px;border-radius:10px;background:var(--forest);color:#fff;font-weight:750;transition:.25s ease}
    .btn:hover{background:var(--forest-deep);color:#fff;transform:translateY(-2px)}
    .btn-outline{background:transparent;color:var(--forest);border:1px solid #8ba79b}
    .btn-outline:hover{background:var(--forest);color:#fff}
    .btn-lime{background:var(--lime);color:var(--forest-deep)}
    .btn-lime:hover{background:#c8e64a;color:var(--forest-deep)}
    .menu-toggle{display:none;background:transparent;font-size:24px;color:var(--forest)}
    .hero{background:var(--forest-deep);color:#fff;padding:78px 0 66px;position:relative;overflow:hidden}
    .hero:before,.hero:after{content:"";position:absolute;border:1px solid rgba(183,216,50,.22);border-radius:50%;pointer-events:none}
    .hero:before{width:540px;height:540px;right:-160px;top:-280px}
    .hero:after{width:260px;height:260px;left:-100px;bottom:-180px}
    .hero-grid{display:grid;grid-template-columns:1fr .82fr;gap:72px;align-items:center;position:relative;z-index:1}
    .eyebrow,.tag{display:inline-flex;align-items:center;gap:7px;color:var(--lime);font-size:13px;font-weight:750;letter-spacing:.04em}
    .eyebrow:before{content:"";width:25px;height:2px;background:var(--lime)}
    .hero h1{font-size:clamp(36px,5vw,58px);line-height:1.18;letter-spacing:-.06em;margin:19px 0}
    .hero h1 em{font-style:normal;color:var(--lime)}
    .hero p{color:#c8d4cd;max-width:620px;font-size:17px;margin-bottom:26px}
    .hero-actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero .btn-outline{color:#fff;border-color:#6e9185}
    .trust-row{display:flex;gap:18px;flex-wrap:wrap;color:#b7c8c0;font-size:13px;margin-top:28px}
    .trust-row span{display:flex;align-items:center;gap:6px}
    .trust-row i{width:7px;height:7px;background:var(--lime);border-radius:50%}
    .security-art{min-height:330px;position:relative;border:1px solid rgba(183,216,50,.25);border-radius:28px;background:rgba(255,255,255,.045);padding:28px}
    .security-art:before{content:"";position:absolute;inset:24px;border:1px dashed rgba(200,224,208,.28);border-radius:50%}
    .shield{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:128px;height:150px;background:var(--lime);clip-path:polygon(50% 0,90% 15%,84% 64%,50% 100%,16% 64%,10% 15%);display:grid;place-items:center;color:var(--forest-deep);font-size:44px;font-weight:900}
    .shield:after{content:"✓";font-size:48px}
    .security-node{position:absolute;background:#fff;color:var(--ink);border-radius:12px;padding:10px 14px;font-size:12px;box-shadow:0 10px 24px rgba(0,0,0,.14)}
    .security-node b{display:block;color:var(--forest);font-size:15px}
    .node-a{top:28px;left:24px}.node-b{right:22px;top:76px}.node-c{left:34px;bottom:35px}.node-d{right:28px;bottom:28px}
    .section{padding:84px 0}
    .section.alt{background:var(--warm)}
    .section-head{display:flex;justify-content:space-between;gap:25px;align-items:end;margin-bottom:32px}
    .section-head h2{font-size:34px;line-height:1.25;letter-spacing:-.05em;margin:0}
    .section-head p{color:var(--muted);max-width:520px;margin:0}
    .kicker{color:var(--forest);font-size:13px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;margin-bottom:9px}
    .protection-grid{display:grid;grid-template-columns:1.15fr .85fr 1fr;gap:14px;align-items:stretch}
    .protect-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;min-height:190px;transition:.25s ease}
    .protect-card:nth-child(2){margin-top:28px;background:var(--forest);color:#fff}
    .protect-card:nth-child(3){margin-top:56px;background:#eef4dc}
    .protect-card:hover,.guide-card:hover,.resource-row:hover{transform:translateY(-4px);border-color:var(--forest);box-shadow:var(--shadow)}
    .icon-box{width:42px;height:42px;border-radius:13px;background:var(--mist);color:var(--forest);display:grid;place-items:center;font-size:20px;font-weight:800;margin-bottom:20px}
    .protect-card:nth-child(2) .icon-box{background:rgba(183,216,50,.18);color:var(--lime)}
    .protect-card h3{font-size:20px;margin:0 0 7px}
    .protect-card p{font-size:14px;color:var(--muted);margin:0}
    .protect-card:nth-child(2) p{color:#c8d4cd}
    .article-layout{display:grid;grid-template-columns:1fr 290px;gap:54px}
    .guide-list{display:grid;gap:13px}
    .guide-card{display:grid;grid-template-columns:105px 1fr auto;gap:20px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px 20px;transition:.25s ease}
    .guide-card .date{font-size:13px;color:var(--muted);font-weight:700}
    .guide-card h3{font-size:18px;line-height:1.45;margin:0 0 4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .guide-card p{font-size:13px;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
    .guide-card .arrow{font-size:22px;color:var(--forest)}
    .side-panel{background:var(--forest-deep);border-radius:var(--radius);color:#fff;padding:27px;align-self:start;position:sticky;top:104px}
    .side-panel h3{font-size:21px;margin:0 0 17px}
    .side-panel ul{padding:0;margin:0;list-style:none}
    .side-panel li{border-top:1px solid rgba(255,255,255,.16);padding:12px 0;color:#d0ddd5;font-size:14px}
    .side-panel li:before{content:"→";color:var(--lime);margin-right:8px}
    .process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);padding-top:28px}
    .process-step{position:relative;padding:0 24px 0 0;margin-right:24px}
    .process-step:not(:last-child):after{content:"";position:absolute;right:0;top:17px;width:25px;border-top:1px dashed #94aa9c}
    .process-step b{display:block;color:var(--forest);font-size:30px;line-height:1;margin-bottom:19px}
    .process-step h3{font-size:18px;margin:0 0 5px}
    .process-step p{color:var(--muted);font-size:14px;margin:0}
    .privacy-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
    .privacy-card{background:#fff;border-radius:var(--radius);border:1px solid var(--line);padding:28px}
    .privacy-card h3{font-size:20px;margin:0 0 15px}
    .privacy-card ul{padding-left:20px;margin:0;color:var(--muted);font-size:14px}
    .privacy-card li{margin:7px 0}
    .tool-display{background:var(--forest-deep);border-radius:24px;padding:36px;color:#fff;display:grid;grid-template-columns:.8fr 1.2fr;gap:50px;align-items:center}
    .tool-display h2{font-size:32px;line-height:1.3;margin:0 0 13px}
    .tool-display p{color:#c5d4cc;margin:0}
    .setting-list{display:grid;gap:11px}
    .setting{display:flex;align-items:center;justify-content:space-between;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);padding:14px 17px;border-radius:12px}
    .setting span{font-size:14px}.status{color:var(--lime);font-size:13px}
    .status:before{content:"";display:inline-block;width:8px;height:8px;background:var(--lime);border-radius:50%;margin-right:7px}
    .faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:50px}
    .faq-intro h2{font-size:33px;line-height:1.3;margin:0 0 14px}
    .faq-intro p{color:var(--muted)}
    .faq-intro .btn{margin-top:15px}
    .faq-list{display:grid;gap:10px}
    details{background:#fff;border:1px solid var(--line);border-radius:13px;padding:0 20px}
    summary{list-style:none;cursor:pointer;font-weight:750;padding:18px 0;position:relative;padding-right:30px}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";position:absolute;right:0;color:var(--forest);font-size:22px;line-height:1}
    details[open] summary:after{content:"−"}
    details p{border-top:1px solid var(--line);padding:13px 0 18px;color:var(--muted);font-size:14px;margin:0}
    .resource-box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:25px}
    .resource-row{display:grid;grid-template-columns:1fr 2fr auto;align-items:center;gap:20px;padding:17px 5px;border-bottom:1px solid var(--line);transition:.25s ease}
    .resource-row:last-child{border-bottom:0}
    .resource-row strong{font-size:16px}.resource-row p{margin:0;color:var(--muted);font-size:14px}
    .resource-row a{color:var(--forest);font-weight:750;white-space:nowrap}
    .section-foot{display:flex;justify-content:center;gap:12px;margin-top:25px}
    .cta-band{background:var(--forest);color:#fff;padding:54px 0}
    .cta-inner{display:flex;justify-content:space-between;align-items:center;gap:25px}
    .cta-inner h2{font-size:30px;margin:0 0 5px}.cta-inner p{margin:0;color:#c8d4cd}
    .site-footer{background:#18221f;color:#d9e4dd;padding:58px 0 0}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:44px}
    .footer-brand .logo{color:#fff;margin-bottom:16px}.footer-brand p{color:#91a49b;font-size:14px;max-width:270px}
    .site-footer h3{color:#fff;font-size:15px;margin:3px 0 14px}
    .site-footer a:not(.logo){display:block;color:#aebeb5;font-size:14px;margin:7px 0;transition:.2s}
    .site-footer a:not(.logo):hover{color:var(--lime);padding-left:3px}
    .copyright{border-top:1px solid rgba(255,255,255,.1);padding:19px 0;display:flex;justify-content:space-between;gap:15px;color:#81958b;font-size:12px}
    .top-btn{position:fixed;right:22px;bottom:22px;width:42px;height:42px;border-radius:12px;background:var(--lime);color:var(--forest-deep);font-weight:900;display:none;z-index:15}
    .top-btn.show{display:block}
    @media(max-width:1100px){
      .nav{gap:15px}.header-inner{gap:18px}
      .protection-grid{grid-template-columns:1fr 1fr}.protect-card:nth-child(3){margin-top:0;grid-column:1/-1}
    }
    @media(max-width:900px){
      .nav{display:none;position:absolute;top:78px;left:0;right:0;background:var(--paper);border-bottom:1px solid var(--line);padding:10px 24px 18px;flex-direction:column;align-items:stretch;gap:0}
      .nav.open{display:flex}.nav a{padding:10px 0}.nav a.active:after{bottom:5px;right:auto;width:34px}
      .menu-toggle{display:block;margin-left:auto}.header-download{margin-left:0}
      .hero-grid,.tool-display{grid-template-columns:1fr;gap:35px}.security-art{min-height:280px}
      .article-layout,.faq-grid{grid-template-columns:1fr;gap:30px}.side-panel{position:static}
      .process{grid-template-columns:1fr 1fr;gap:30px}.process-step:not(:last-child):after{display:none}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:600px){
      .container{width:min(var(--max),calc(100% - 34px))}
      .site-header{height:68px}.header-inner{height:68px}.nav{top:68px}
      .logo{font-size:18px}.logo-mark{width:31px;height:31px}.logo small{font-size:9px}
      .header-download{min-height:36px!important;padding:0 11px!important;font-size:12px!important}
      .hero{padding:59px 0 48px}.hero h1{font-size:36px}.hero p{font-size:15px}
      .security-art{min-height:245px;padding:15px}.shield{width:92px;height:110px;font-size:30px}.shield:after{font-size:35px}
      .security-node{padding:7px 9px;font-size:10px}.security-node b{font-size:12px}
      .node-a{top:16px;left:12px}.node-b{right:10px;top:52px}.node-c{left:15px;bottom:18px}.node-d{right:12px;bottom:16px}
      .section{padding:58px 0}.section-head{display:block}.section-head h2{font-size:28px;margin-bottom:10px}
      .protection-grid,.privacy-grid{grid-template-columns:1fr}.protect-card:nth-child(2),.protect-card:nth-child(3){margin-top:0;grid-column:auto}
      .guide-card{grid-template-columns:1fr auto;gap:5px 15px}.guide-card .date{grid-column:1/-1}.guide-card p{font-size:12px}
      .process{grid-template-columns:1fr;gap:23px}.process-step{padding-left:44px;margin:0}.process-step b{position:absolute;left:0;top:0;font-size:24px}.process-step:not(:last-child):after{display:block;left:11px;right:auto;top:34px;height:20px;width:1px;border-top:0;border-left:1px dashed #94aa9c}
      .resource-row{grid-template-columns:1fr auto;gap:4px 12px}.resource-row p{grid-column:1}.resource-row a{grid-column:2;grid-row:1/3}
      .cta-inner{display:block}.cta-inner .btn{margin-top:20px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px 18px}.footer-brand{grid-column:1/-1}.copyright{display:block}.copyright span{display:block;margin:4px 0}
      .top-btn{right:15px;bottom:15px}
    }