/* roulang page: index */
:root{
  --teal:#0f5b52;--teal-dark:#0a443d;--orange:#f26b38;--orange-dark:#d95527;
  --cream:#f7f1e8;--paper:#fbfaf6;--mint:#c9e4d5;--ink:#17201d;--muted:#66746e;
  --line:#dce4de;--white:#fff;--soft:#edf5ef;--danger:#9c4c45;
  --radius:18px;--radius-lg:26px;--shadow:0 14px 38px rgba(23,32,29,.09);
  --shadow-sm:0 6px 18px rgba(23,32,29,.06);--max:1200px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}
a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}.container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
.skip-link{position:absolute;left:-999px}.skip-link:focus{left:20px;top:20px;background:var(--white);padding:10px 16px;z-index:99;border-radius:8px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,250,246,.94);border-bottom:1px solid rgba(15,91,82,.11);backdrop-filter:blur(12px)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}.brand{display:flex;align-items:center;gap:10px;min-width:220px}.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--teal);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:inset 0 -5px 0 rgba(0,0,0,.12)}.brand-name{font-weight:800;font-size:15px;line-height:1.25;letter-spacing:-.3px}.brand-sub{display:block;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.3px}
.nav{display:flex;align-items:center;gap:4px}.nav a{padding:9px 11px;border-radius:9px;font-size:14px;font-weight:700;color:#40514a;transition:.2s}.nav a:hover,.nav a.active{background:var(--soft);color:var(--teal)}.header-actions{display:flex;gap:10px;align-items:center}.menu-toggle{display:none;border:0;background:transparent;padding:9px;color:var(--teal);font-size:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:12px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s,color .2s}.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(242,107,56,.35);outline-offset:3px}.btn-main{background:var(--orange);color:#fff}.btn-main:hover{background:var(--orange-dark)}.btn-teal{background:var(--teal);color:#fff}.btn-teal:hover{background:var(--teal-dark)}.btn-light{background:#fff;border-color:var(--line);color:var(--teal)}.btn-small{min-height:38px;padding:8px 13px;font-size:13px}
.section{padding:92px 0}.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:34px}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.4px}.eyebrow:before{content:"";width:8px;height:8px;background:var(--orange);border-radius:50%}.section h2{margin:7px 0 0;font-size:clamp(25px,3vw,38px);line-height:1.25;letter-spacing:-1px}.section-intro{max-width:560px;margin:0;color:var(--muted);font-size:15px}.tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:99px;font-size:12px;font-weight:800;line-height:1.4}.tag-green{background:var(--mint);color:var(--teal-dark)}.tag-orange{background:#ffe0d4;color:#a84725}.tag-cream{background:var(--cream);color:#795e3d}.tag-gray{background:#e8eeea;color:#526059}
.hero{position:relative;overflow:hidden;padding:68px 0 58px;background:linear-gradient(100deg,var(--cream) 0 48%,var(--teal) 48%)}.hero:after{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.17) 1px,transparent 1px);background-size:12px 12px;pointer-events:none}.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:42px}.hero-copy{padding:32px 0}.hero-copy h1{max-width:650px;margin:13px 0 19px;font-size:clamp(37px,5vw,62px);line-height:1.12;letter-spacing:-2.5px}.hero-copy p{max-width:600px;margin:0;color:#485750;font-size:17px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.notice{margin-top:19px;color:#65736d;font-size:12px}.hero-panel{position:relative;min-height:390px;display:flex;align-items:center;justify-content:center}.app-window{width:min(100%,440px);background:#fdfcf9;border:8px solid #173f39;border-radius:31px;padding:17px;box-shadow:0 26px 55px rgba(0,0,0,.26);transform:rotate(3deg)}.app-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.app-dots{display:flex;gap:5px}.app-dots i{width:8px;height:8px;background:#83afa4;border-radius:50%}.app-title{font-size:12px;color:#447068;font-weight:800}.app-screen{padding:17px;border-radius:19px;background:#e6f0e9;min-height:250px}.screen-banner{padding:18px;border-radius:14px;background:var(--teal);color:#fff}.screen-banner b{font-size:22px;display:block;line-height:1.2}.screen-banner small{opacity:.76}.screen-list{display:grid;grid-template-columns:repeat(3,1fr);gap:9px;margin-top:12px}.screen-card{height:82px;border-radius:12px;background:#fff;position:relative;overflow:hidden}.screen-card:before{content:"";position:absolute;inset:0;background:linear-gradient(145deg,#f4ad6d,#f7efe2 58%,#9bcfc0)}.screen-card:nth-child(2):before{background:linear-gradient(145deg,#8bc8b7,#f7efe2 60%,#efa16e)}.screen-card:nth-child(3):before{background:linear-gradient(145deg,#f2d590,#9bc9bd)}.version-strip{position:absolute;right:0;bottom:4px;background:#fff;padding:13px 16px;border-radius:15px;box-shadow:var(--shadow-sm);font-size:12px;color:var(--muted)}.version-strip b{color:var(--teal);margin-right:10px}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.download-card{display:flex;flex-direction:column;align-items:flex-start;padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:.25s}.download-card:hover{border-color:#92b8aa;transform:translateY(-4px);box-shadow:var(--shadow)}.system-icon{width:48px;height:48px;display:grid;place-items:center;border-radius:15px;background:var(--soft);color:var(--teal);font-size:22px;font-weight:900}.download-card h3{margin:16px 0 7px;font-size:20px}.download-card p{margin:0 0 17px;color:var(--muted);font-size:14px}.meta-line{margin-top:auto;width:100%;padding-top:14px;border-top:1px solid var(--line);color:var(--muted);font-size:12px}.download-card .btn{width:100%;margin-top:15px}
.ticker-wrap{padding:0 0 18px}.ticker{display:grid;grid-template-columns:auto 1fr;align-items:stretch;background:#17201d;border-radius:16px;overflow:hidden;color:#fff}.ticker-label{padding:17px 21px;background:var(--orange);font-weight:800}.ticker-items{display:flex;align-items:center;gap:28px;padding:0 22px;overflow:auto;white-space:nowrap}.ticker-item{font-size:13px;color:#d8e4dd}.ticker-item b{color:#fff;margin-right:8px}.ticker-item time{color:#9fc9bb;margin-right:8px}
.channel-grid{display:grid;grid-template-columns:1.1fr .9fr .9fr;grid-template-rows:150px 150px;gap:17px}.channel-card{position:relative;overflow:hidden;padding:23px;border-radius:var(--radius);transition:.25s}.channel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.channel-card:nth-child(1){grid-row:span 2;background:var(--teal);color:#fff}.channel-card:nth-child(2){background:#d9ecdf}.channel-card:nth-child(3){background:#fde0d3}.channel-card:nth-child(4){background:#f0e7d8}.channel-card h3{position:relative;margin:0 0 8px;font-size:22px;line-height:1.25}.channel-card p{position:relative;margin:0;max-width:250px;font-size:13px;line-height:1.6;opacity:.82}.channel-card .arrow{position:absolute;right:22px;bottom:18px;font-size:22px;font-weight:800}.channel-card:nth-child(1):before{content:"↓";position:absolute;right:20px;top:15px;font-size:92px;line-height:1;color:rgba(255,255,255,.11);font-weight:900}
.feature-area{background:var(--cream)}.feature-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:center}.feature-visual{position:relative;height:400px;border-radius:var(--radius-lg);background:var(--teal);overflow:hidden;padding:31px}.feature-visual:before{content:"";position:absolute;width:290px;height:290px;right:-70px;bottom:-60px;border:42px solid rgba(201,228,213,.35);border-radius:50%}.visual-label{position:relative;display:inline-block;padding:7px 11px;border-radius:8px;background:#fff;color:var(--teal);font-size:12px;font-weight:800}.visual-interface{position:absolute;left:31px;right:31px;bottom:30px;padding:19px;background:#f9f7f1;border-radius:18px;box-shadow:0 15px 30px rgba(0,0,0,.19)}.visual-interface b{display:block;font-size:17px}.bar{height:9px;margin-top:11px;border-radius:99px;background:#d6e4dc}.bar i{display:block;width:73%;height:100%;border-radius:inherit;background:var(--orange)}.feature-list{list-style:none;padding:0;margin:0}.feature-list li{display:grid;grid-template-columns:47px 1fr;gap:16px;padding:19px 0;border-bottom:1px solid var(--line)}.feature-list li:last-child{border-bottom:0}.feature-no{font-size:14px;color:var(--orange);font-weight:900;padding-top:3px}.feature-list h3{margin:0 0 5px;font-size:18px}.feature-list p{margin:0;color:var(--muted);font-size:14px}
.content-showcase{display:grid;grid-template-columns:1.2fr .8fr;gap:18px}.showcase-main,.showcase-side{border-radius:var(--radius);overflow:hidden}.cover-art{height:245px;padding:22px;display:flex;flex-direction:column;justify-content:flex-end;color:#fff;background:linear-gradient(140deg,#0f5b52,#75ad9b 56%,#f5a06e);position:relative}.cover-art:before{content:"";position:absolute;top:22px;right:23px;width:84px;height:84px;border:12px solid rgba(255,255,255,.28);border-radius:25px}.cover-art h3{position:relative;margin:8px 0 0;font-size:26px;line-height:1.25}.cover-art small{position:relative}.showcase-side{display:grid;gap:18px}.mini-content{min-height:113px;padding:19px;background:#fff;border:1px solid var(--line);transition:.2s}.mini-content:hover{border-color:#a4c7b9}.mini-content h3{margin:8px 0 0;font-size:16px;line-height:1.4}.mini-content p{margin:5px 0 0;color:var(--muted);font-size:12px}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}.step{position:relative;padding:25px 20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.step-no{display:block;margin-bottom:25px;color:var(--orange);font-size:28px;font-weight:900;line-height:1}.step h3{margin:0 0 8px;font-size:18px}.step p{margin:0;color:var(--muted);font-size:13px}.step a{display:inline-block;margin-top:15px;color:var(--teal);font-size:13px;font-weight:800}
.update-layout{display:grid;grid-template-columns:.9fr 1.1fr;gap:23px}.latest-version{padding:31px;border-radius:var(--radius-lg);background:var(--teal);color:#fff}.latest-version .version-big{margin:14px 0;font-size:50px;font-weight:900;line-height:1}.latest-version p{color:#cfe5db;margin:0 0 18px;font-size:14px}.latest-version ul{list-style:none;padding:0;margin:0}.latest-version li{padding:9px 0;border-top:1px solid rgba(255,255,255,.17);font-size:13px}.update-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 23px}.update-row{display:grid;grid-template-columns:100px 1fr auto;gap:16px;align-items:center;padding:17px 0;border-bottom:1px solid var(--line)}.update-row:last-child{border:0}.update-row b{color:var(--teal)}.update-row p{margin:0;color:var(--muted);font-size:13px}.update-row time{font-size:12px;color:#839089}
.news-area{background:#f1f6f1}.news-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:20px}.featured-news{display:block;padding:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s}.featured-news:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.news-cover{height:210px;background:linear-gradient(135deg,#c9e4d5,#f4d6b7);position:relative}.news-cover:after{content:"";position:absolute;left:26px;bottom:21px;width:120px;height:72px;border-radius:15px;background:rgba(255,255,255,.62);border:1px solid rgba(255,255,255,.8)}.featured-news .news-copy{padding:21px}.news-copy h3{margin:10px 0 8px;font-size:21px;line-height:1.4}.news-copy p{margin:0;color:var(--muted);font-size:14px}.news-date{font-size:12px;color:#7b8881}.compact-news{display:flex;flex-direction:column;gap:11px}.compact-item{display:grid;grid-template-columns:87px 1fr;gap:14px;padding:13px;background:#fff;border:1px solid var(--line);border-radius:13px;transition:.2s}.compact-item:hover{border-color:#a2c6b6}.compact-cover{border-radius:9px;background:linear-gradient(145deg,#0f5b52,#8dbdab)}.compact-item h3{margin:6px 0 3px;font-size:15px;line-height:1.35}.compact-item p{margin:0;color:var(--muted);font-size:12px;line-height:1.45}.empty-news{grid-column:1/-1;text-align:center;padding:48px;background:#fff;border:1px dashed #b8cec1;border-radius:var(--radius)}.empty-icon{font-size:30px;color:var(--teal)}.empty-news p{color:var(--muted)}
.compat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.compat-card{padding:21px;background:#fff;border:1px solid var(--line);border-radius:15px}.compat-card .system-icon{width:40px;height:40px;border-radius:12px;font-size:17px}.compat-card h3{margin:14px 0 7px;font-size:17px}.compat-card p{margin:0;color:var(--muted);font-size:13px}.compat-card span{display:inline-block;margin-top:13px;font-size:12px;font-weight:800;color:var(--teal)}
.security{background:var(--mint)}.security-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}.security-copy h2{margin:8px 0 12px;font-size:34px;line-height:1.3}.security-copy p{margin:0;color:#3b5a50}.security-points{display:grid;grid-template-columns:1fr 1fr;gap:14px}.security-point{padding:18px;background:rgba(255,255,255,.62);border:1px solid rgba(15,91,82,.12);border-radius:14px}.security-point b{display:block;margin-bottom:5px;font-size:15px}.security-point span{font-size:13px;color:#48675d}
.feedback-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:22px}.feedback-cards{display:grid;gap:13px}.quote-card{padding:19px;background:#fff;border:1px solid var(--line);border-radius:14px}.quote-card p{margin:0;color:#43524c;font-size:14px}.quote-card b{display:block;margin-top:8px;color:var(--teal);font-size:12px}.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}.faq-item{border-bottom:1px solid var(--line)}.faq-item:last-child{border:0}.faq-q{width:100%;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:18px 20px;border:0;background:#fff;text-align:left;color:var(--ink);font-weight:800}.faq-q span:last-child{color:var(--orange);font-size:20px}.faq-a{display:none;padding:0 20px 18px;color:var(--muted);font-size:14px}.faq-item.open .faq-a{display:block}.faq-item.open .faq-q{color:var(--teal)}
.contact-area{background:var(--cream)}.contact-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:28px}.contact-info{padding:28px;border-radius:var(--radius);background:var(--teal);color:#fff}.contact-info h2{margin:8px 0 12px;font-size:31px;line-height:1.25}.contact-info p{color:#d4e8df;font-size:14px}.contact-info ul{padding:0;list-style:none;margin:22px 0 0}.contact-info li{padding:10px 0;border-top:1px solid rgba(255,255,255,.16);font-size:13px}.form-card{padding:26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.field{display:flex;flex-direction:column;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:13px;font-weight:800}.field input,.field select,.field textarea{width:100%;padding:11px 12px;border:1px solid #ced9d2;border-radius:10px;background:#fff;color:var(--ink);transition:.2s}.field textarea{resize:vertical;min-height:92px}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(15,91,82,.1);outline:0}.checkline{display:flex;gap:8px;align-items:flex-start;margin:14px 0;color:var(--muted);font-size:12px}.form-status{display:none;margin-top:12px;padding:9px 12px;border-radius:8px;background:#e5f3eb;color:var(--teal);font-size:13px}
.cta-section{padding:70px 0 96px}.cta-box{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:30px;padding:39px 46px;border-radius:var(--radius-lg);background:var(--teal);color:#fff}.cta-box:after{content:"";position:absolute;right:-42px;top:-90px;width:270px;height:270px;border:38px solid rgba(201,228,213,.2);border-radius:50%}.cta-box h2{position:relative;margin:7px 0 8px;font-size:32px;line-height:1.25}.cta-box p{position:relative;margin:0;color:#d2e7de;font-size:14px}.cta-actions{position:relative;display:flex;gap:12px;flex-wrap:wrap}.cta-actions .btn-light{border-color:#fff}
.footer{background:#17201d;color:#d5e0da;padding:58px 0 21px}.footer-grid{display:grid;grid-template-columns:1.45fr repeat(4,1fr);gap:25px}.footer-brand .brand-name{color:#fff}.footer-brand p{max-width:290px;color:#a7bab1;font-size:13px}.footer h3{margin:0 0 12px;color:#fff;font-size:14px}.footer-links{display:grid;gap:7px}.footer-links a{color:#aec0b7;font-size:13px;transition:.2s}.footer-links a:hover{color:#fff}.risk{margin-top:39px;padding:15px 0;border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12);color:#a8bcb2;font-size:12px}.copyright{display:flex;justify-content:space-between;gap:14px;margin-top:18px;color:#83958d;font-size:12px}
@media(max-width:1024px){.nav{gap:0}.nav a{padding:8px 7px;font-size:13px}.brand{min-width:180px}.hero-grid,.feature-grid,.security-grid{gap:32px}.channel-grid{grid-template-columns:1fr 1fr}.channel-card:nth-child(1){grid-row:span 1}.compat-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}}
@media(max-width:768px){.container{width:min(calc(100% - 32px),var(--max))}.header-inner{height:66px}.brand{min-width:0}.brand-name{font-size:13px;max-width:205px}.nav{display:none;position:absolute;top:66px;left:0;right:0;padding:14px 16px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.show{display:flex}.nav a{padding:12px}.menu-toggle{display:block}.header-actions .btn{display:none}.hero{padding:32px 0 39px;background:linear-gradient(180deg,var(--cream) 0 58%,var(--teal) 58%)}.hero-grid,.feature-grid,.content-showcase,.update-layout,.news-grid,.security-grid,.feedback-layout,.contact-grid{grid-template-columns:1fr}.hero-copy{padding:12px 0}.hero-copy h1{font-size:39px}.hero-panel{min-height:315px}.app-window{width:330px}.section{padding:65px 0}.section-head{display:block;margin-bottom:25px}.section-intro{margin-top:12px}.download-grid,.steps{grid-template-columns:1fr}.channel-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}.channel-card{min-height:145px}.channel-card:nth-child(1){grid-column:span 2}.feature-visual{height:320px}.showcase-side{grid-template-columns:1fr 1fr}.latest-version{padding:26px}.update-row{grid-template-columns:82px 1fr}.update-row time{display:none}.security-points{grid-template-columns:1fr 1fr}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.cta-box{display:block;padding:31px}.cta-actions{margin-top:20px}.ticker{grid-template-columns:1fr}.ticker-label{padding:10px 17px}.ticker-items{padding:13px 17px}.form-grid{grid-template-columns:1fr}}
@media(max-width:520px){body{font-size:15px}.brand-sub{display:none}.hero-copy h1{font-size:34px;letter-spacing:-1.6px}.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions .btn{width:100%}.version-strip{position:relative;margin-top:-5px;right:auto;bottom:auto}.app-window{width:290px;padding:12px;border-width:6px}.app-screen{min-height:208px;padding:12px}.screen-card{height:62px}.channel-grid{grid-template-columns:1fr}.channel-card:nth-child(1){grid-column:auto}.channel-card{min-height:137px}.showcase-side{grid-template-columns:1fr}.compat-grid,.security-points{grid-template-columns:1fr}.feature-visual{height:275px;padding:20px}.visual-interface{left:20px;right:20px;bottom:20px}.news-cover{height:175px}.compact-item{grid-template-columns:67px 1fr}.contact-info,.form-card{padding:21px}.footer-grid{grid-template-columns:1fr 1fr;gap:24px 16px}.copyright{display:block;line-height:1.8}.cta-box h2{font-size:27px}.cta-actions{display:grid}.cta-actions .btn{width:100%}}

/* roulang page: article */
:root{
  --teal:#0f5b52;--teal-dark:#0a443d;--orange:#f26b38;--orange-dark:#d95527;
  --cream:#f7f1e8;--paper:#fbfaf6;--mint:#c9e4d5;--ink:#17201d;--muted:#66746e;
  --line:#dce4de;--white:#fff;--soft:#edf5ef;--danger:#9c4c45;
  --radius:18px;--radius-lg:26px;--shadow:0 14px 38px rgba(23,32,29,.09);
  --shadow-sm:0 6px 18px rgba(23,32,29,.06);--max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
.container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,250,246,.94);border-bottom:1px solid rgba(15,91,82,.11);backdrop-filter:blur(12px)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:10px;min-width:220px}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--teal);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:inset 0 -5px 0 rgba(0,0,0,.12)}
.brand-name{font-weight:800;font-size:15px;line-height:1.25;letter-spacing:-.3px}
.brand-sub{display:block;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.3px}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:9px 11px;border-radius:9px;font-size:14px;font-weight:700;color:#40514a;transition:.2s}
.nav a:hover,.nav a.active{background:var(--soft);color:var(--teal)}
.header-actions{display:flex;gap:10px;align-items:center}
.menu-toggle{display:none;border:0;background:transparent;padding:9px;color:var(--teal);font-size:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:12px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(242,107,56,.35);outline-offset:3px}
.btn-main{background:var(--orange);color:#fff}.btn-main:hover{background:var(--orange-dark)}
.btn-teal{background:var(--teal);color:#fff}.btn-teal:hover{background:var(--teal-dark)}
.btn-light{background:#fff;border-color:var(--line);color:var(--teal)}
.btn-small{min-height:38px;padding:8px 13px;font-size:13px}
.tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:99px;font-size:12px;font-weight:800;line-height:1.4}
.tag-green{background:var(--mint);color:var(--teal-dark)}.tag-orange{background:#ffe0d4;color:#a84725}.tag-cream{background:var(--cream);color:#795e3d}.tag-gray{background:#e8eeea;color:#526059}
.article-top{padding:30px 0 54px;background:linear-gradient(180deg,#fff 0%,var(--cream) 100%);border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;gap:9px;align-items:center;overflow:hidden;color:var(--muted);font-size:13px;white-space:nowrap}
.breadcrumb a:hover{color:var(--teal)}.crumb-sep{color:#aab4ae}
.article-head{max-width:890px;padding:42px 0 0}
.article-head h1{margin:16px 0 18px;font-size:clamp(30px,4.4vw,53px);line-height:1.2;letter-spacing:-1.7px}
.article-lead{margin:0;max-width:790px;color:#526059;font-size:17px}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:23px;color:var(--muted);font-size:13px}
.article-meta span{display:flex;align-items:center;gap:6px}.article-meta i{width:6px;height:6px;background:var(--orange);border-radius:50%}
.cover{margin-top:34px;min-height:270px;position:relative;overflow:hidden;border-radius:var(--radius-lg);background:var(--teal);box-shadow:var(--shadow)}
.cover:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 16% 20%,rgba(255,255,255,.24) 0 2px,transparent 3px),linear-gradient(128deg,rgba(201,228,213,.92) 0 28%,transparent 28% 56%,rgba(242,107,56,.75) 56% 71%,transparent 71%);background-size:18px 18px,100% 100%;opacity:.8}
.cover:after{content:"PG";position:absolute;right:8%;bottom:-30px;font-size:180px;line-height:1;font-weight:900;color:rgba(255,255,255,.13);letter-spacing:-14px}
.cover-caption{position:absolute;left:28px;bottom:25px;z-index:1;color:#fff;font-weight:800;font-size:15px}
.reading-progress{position:fixed;top:76px;left:0;z-index:49;width:0;height:3px;background:var(--orange);transition:width .1s}
.content-layout{display:grid;grid-template-columns:220px minmax(0,790px);gap:54px;align-items:start;padding:66px 0 88px}
.toc{position:sticky;top:108px;padding:19px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
.toc-title{margin:0 0 12px;font-size:14px;font-weight:900;color:var(--teal)}
.toc a{display:block;padding:7px 0;color:var(--muted);font-size:13px;border-bottom:1px solid #eef2ef;transition:.2s}
.toc a:last-child{border-bottom:0}.toc a:hover{padding-left:4px;color:var(--teal)}
.article-main{min-width:0}
.summary-box{padding:25px 27px;border:1px solid #eadfcb;border-radius:var(--radius);background:var(--cream)}
.summary-box h2{margin:0 0 10px;font-size:19px}.summary-box p{margin:0;color:#526059}
.info-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:19px}
.info-cell{padding:13px;border-radius:12px;background:rgba(255,255,255,.7);font-size:13px}.info-cell b{display:block;color:var(--teal);font-size:12px;margin-bottom:3px}
.article-body{margin-top:36px;padding-bottom:15px;font-size:16px;line-height:1.95;color:#28342f}
.article-body h2{margin:48px 0 18px;padding-left:15px;border-left:5px solid var(--orange);font-size:28px;line-height:1.35;color:var(--ink)}
.article-body h3{margin:33px 0 13px;font-size:21px;line-height:1.45;color:var(--teal-dark)}
.article-body p{margin:0 0 20px}.article-body ul,.article-body ol{margin:0 0 22px;padding-left:25px}.article-body li{margin:8px 0}
.article-body blockquote{margin:26px 0;padding:18px 21px;border-left:4px solid var(--teal);border-radius:0 12px 12px 0;background:var(--soft);color:#3f5149}
.article-body img{margin:27px auto;border-radius:16px;box-shadow:var(--shadow-sm);cursor:zoom-in}
.article-body table{width:100%;margin:25px 0;border-collapse:separate;border-spacing:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;font-size:14px}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left}.article-body th{background:var(--soft);color:var(--teal)}.article-body tr:last-child td{border-bottom:0}
.inline-download{margin:42px 0;padding:27px;background:var(--teal);border-radius:var(--radius-lg);color:#fff;box-shadow:var(--shadow)}
.inline-download h2{margin:0 0 8px;padding:0;border:0;color:#fff;font-size:25px}.inline-download p{margin:0;color:#d1e7dc}.inline-download .btn{margin-top:19px}
.notice{display:flex;gap:13px;margin:32px 0;padding:18px;border:1px solid #e6c7be;border-radius:15px;background:#fff4f0;color:#714438;font-size:14px}.notice strong{color:var(--danger)}
.related{padding:72px 0;background:#eef5ef}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:28px}.section-head h2{margin:6px 0 0;font-size:34px;line-height:1.25}.eyebrow{color:var(--teal);font-weight:800;font-size:13px}.eyebrow:before{content:"";display:inline-block;width:8px;height:8px;margin-right:7px;border-radius:50%;background:var(--orange)}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.related-card{display:flex;flex-direction:column;min-height:230px;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm);transition:.25s}.related-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.related-card h3{margin:14px 0 9px;font-size:18px;line-height:1.45}.related-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}.related-card .more{margin-top:auto;padding-top:17px;color:var(--teal);font-size:14px;font-weight:800}
.article-actions{padding:42px 0 86px}.action-box{display:flex;justify-content:space-between;align-items:center;gap:26px;padding:29px 32px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm)}.action-box h2{margin:0 0 5px;font-size:23px}.action-box p{margin:0;color:var(--muted);font-size:14px}.action-buttons{display:flex;gap:10px;flex-wrap:wrap}
.footer{padding:66px 0 23px;background:var(--ink);color:#d5e0d9}.footer-grid{display:grid;grid-template-columns:2fr repeat(4,1fr);gap:32px;padding-bottom:43px}.footer .brand-name{color:#fff}.footer .brand-sub{color:#9eb7ac}.footer-brand p{max-width:300px;margin:16px 0 0;color:#a9bbb2;font-size:14px}.footer h3{margin:4px 0 15px;color:#fff;font-size:14px}.footer-links{display:flex;flex-direction:column;gap:9px}.footer-links a{color:#aec0b6;font-size:13px;transition:.2s}.footer-links a:hover{color:#fff;padding-left:3px}.risk{padding:17px 0;border-top:1px solid rgba(201,228,213,.16);color:#a9bbb2;font-size:12px;line-height:1.75}.copyright{display:flex;justify-content:space-between;gap:18px;padding-top:18px;border-top:1px solid rgba(201,228,213,.1);color:#8fa49a;font-size:12px}
@media(max-width:960px){.nav{gap:0}.nav a{padding:8px}.content-layout{grid-template-columns:1fr;gap:24px}.toc{position:relative;top:auto;display:flex;align-items:center;gap:13px;overflow:auto;padding:14px}.toc-title{flex:none;margin:0}.toc a{flex:none;border:0;padding:4px 7px}.footer-grid{grid-template-columns:repeat(3,1fr)}.footer-brand{grid-column:span 3}.related-grid{grid-template-columns:1fr 1fr}}
@media(max-width:768px){.container{width:min(calc(100% - 32px),var(--max))}.header-inner{height:66px}.brand{min-width:0}.brand-name{font-size:13px}.nav{display:none;position:absolute;top:66px;left:0;right:0;padding:15px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.nav a{padding:12px}.menu-toggle{display:block}.header-actions .btn{display:none}.article-top{padding-top:24px}.article-head{padding-top:29px}.article-head h1{font-size:34px}.cover{min-height:210px}.cover-caption{left:20px;bottom:18px}.content-layout{padding:44px 0 62px}.info-grid{grid-template-columns:1fr}.article-body h2{font-size:24px}.article-body table{display:block;overflow-x:auto;white-space:nowrap}.related{padding:56px 0}.section-head{display:block}.section-head h2{font-size:29px}.related-grid{grid-template-columns:1fr}.action-box{display:block;padding:25px}.action-buttons{margin-top:20px}.reading-progress{top:66px}.footer-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-column:span 2}}
@media(max-width:520px){body{font-size:15px}.brand-mark{width:34px;height:34px;border-radius:10px}.brand-sub{font-size:9px}.article-head h1{font-size:29px;letter-spacing:-1px}.article-lead{font-size:15px}.article-meta{gap:7px 14px}.cover{min-height:175px;border-radius:18px}.cover:after{font-size:120px}.cover-caption{font-size:13px}.summary-box{padding:20px}.article-body{font-size:15px}.article-body h2{margin-top:37px;font-size:22px}.article-body h3{font-size:19px}.inline-download{padding:22px}.footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.copyright{display:block}.copyright span{display:block;margin:4px 0}.btn{width:100%}.action-buttons{display:block}.action-buttons .btn+.btn{margin-top:9px}}

/* roulang page: category1 */
:root{
  --teal:#0f5b52;--teal-dark:#0a443d;--orange:#f26b38;--orange-dark:#d95527;
  --cream:#f7f1e8;--paper:#fbfaf6;--mint:#c9e4d5;--ink:#17201d;--muted:#66746e;
  --line:#dce4de;--white:#fff;--soft:#edf5ef;--danger:#9c4c45;
  --radius:18px;--radius-lg:26px;--shadow:0 14px 38px rgba(23,32,29,.09);
  --shadow-sm:0 6px 18px rgba(23,32,29,.06);--max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(251,250,246,.94);border-bottom:1px solid rgba(15,91,82,.11);backdrop-filter:blur(12px)}
.header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
.brand{display:flex;align-items:center;gap:10px;min-width:220px}
.brand-mark{width:38px;height:38px;border-radius:12px;background:var(--teal);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:inset 0 -5px 0 rgba(0,0,0,.12)}
.brand-name{font-weight:800;font-size:15px;line-height:1.25;letter-spacing:-.3px}
.brand-sub{display:block;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.3px}
.nav{display:flex;align-items:center;gap:4px}
.nav a{padding:9px 11px;border-radius:9px;font-size:14px;font-weight:700;color:#40514a;transition:.2s}
.nav a:hover,.nav a.active{background:var(--soft);color:var(--teal)}
.header-actions{display:flex;gap:10px;align-items:center}
.menu-toggle{display:none;border:0;background:transparent;padding:9px;color:var(--teal);font-size:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:12px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
.btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(242,107,56,.35);outline-offset:3px}
.btn-main{background:var(--orange);color:#fff}
.btn-main:hover{background:var(--orange-dark)}
.btn-teal{background:var(--teal);color:#fff}
.btn-teal:hover{background:var(--teal-dark)}
.btn-light{background:#fff;border-color:var(--line);color:var(--teal)}
.btn-small{min-height:38px;padding:8px 13px;font-size:13px}
.section{padding:88px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:32px}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.4px}
.eyebrow:before{content:"";width:8px;height:8px;background:var(--orange);border-radius:50%}
.section h2{margin:7px 0 0;font-size:clamp(26px,3vw,38px);line-height:1.25;letter-spacing:-1px}
.section-intro{max-width:560px;margin:0;color:var(--muted);font-size:15px}
.tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:99px;font-size:12px;font-weight:800;line-height:1.4}
.tag-green{background:var(--mint);color:var(--teal-dark)}
.tag-orange{background:#ffe0d4;color:#a84725}
.tag-cream{background:var(--cream);color:#795e3d}
.tag-gray{background:#e8eeea;color:#526059}
.page-top{position:relative;overflow:hidden;padding:52px 0 62px;background:var(--cream)}
.page-top:after{content:"";position:absolute;right:-60px;top:-90px;width:310px;height:310px;border:34px solid rgba(15,91,82,.09);border-radius:50%}
.breadcrumb{position:relative;z-index:1;display:flex;align-items:center;gap:9px;margin-bottom:26px;color:var(--muted);font-size:13px}
.breadcrumb span{color:#94a099}
.page-heading{position:relative;z-index:1;max-width:850px}
.page-heading .tag{margin-bottom:14px}
.page-heading h1{margin:0;font-size:clamp(36px,5vw,58px);line-height:1.15;letter-spacing:-2px}
.page-heading p{max-width:720px;margin:17px 0 0;color:#4d5c56;font-size:17px}
.update-line{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:22px;color:var(--muted);font-size:13px}
.update-line i{width:6px;height:6px;border-radius:50%;background:var(--orange)}
.download-section{padding-top:76px}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.download-card{position:relative;overflow:hidden;display:flex;flex-direction:column;align-items:flex-start;min-height:365px;padding:27px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:.25s}
.download-card:hover{border-color:#91baaa;transform:translateY(-5px);box-shadow:var(--shadow)}
.download-card.featured{background:var(--teal);color:#fff;border-color:var(--teal)}
.download-card.featured:after{content:"";position:absolute;right:-34px;bottom:-43px;width:165px;height:165px;border:25px solid rgba(255,255,255,.1);border-radius:50%}
.os-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:16px;background:var(--soft);color:var(--teal);font-size:23px;font-weight:900}
.featured .os-icon{background:rgba(255,255,255,.15);color:#fff}
.download-card h3{margin:18px 0 8px;font-size:23px}
.download-card p{margin:0;color:var(--muted);font-size:14px}
.featured p{color:#d6e7e0}
.card-info{position:relative;z-index:1;width:100%;margin-top:20px;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.featured .card-info{border-color:rgba(255,255,255,.2)}
.card-info div{display:flex;justify-content:space-between;gap:12px;padding:3px 0;font-size:13px}
.card-info span{color:var(--muted)}
.featured .card-info span{color:#b5d4ca}
.download-card .btn{position:relative;z-index:1;width:100%;margin-top:auto}
.download-card .help-link{position:relative;z-index:1;margin:13px auto 0;color:var(--teal);font-size:13px;font-weight:800}
.featured .help-link{color:#f8d5c6}
.steps-wrap{display:grid;grid-template-columns:260px 1fr;gap:52px;align-items:start}
.steps-aside{position:sticky;top:104px;padding:25px;border-radius:var(--radius);background:var(--teal);color:#fff}
.steps-aside p{margin:12px 0 0;color:#cae0d7;font-size:14px}
.steps-aside .mini-rule{margin-top:21px;padding-top:17px;border-top:1px solid rgba(255,255,255,.18);font-size:13px;color:#e3ece7}
.step-list{display:grid;gap:15px}
.step-card{display:grid;grid-template-columns:74px 1fr 160px;gap:20px;align-items:center;padding:19px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.2s}
.step-card:hover{box-shadow:var(--shadow-sm);border-color:#a5c4b6}
.step-num{font-size:27px;font-weight:900;color:var(--orange);letter-spacing:-1px}
.step-card h3{margin:0 0 5px;font-size:18px}
.step-card p{margin:0;color:var(--muted);font-size:14px}
.step-visual{height:82px;border-radius:13px;background:linear-gradient(135deg,#c9e4d5,#f7f1e8);position:relative;overflow:hidden}
.step-visual:before,.step-visual:after{content:"";position:absolute;border-radius:7px;background:rgba(255,255,255,.86)}
.step-visual:before{width:82px;height:51px;left:22px;top:15px}
.step-visual:after{width:41px;height:7px;left:42px;top:29px;box-shadow:0 14px 0 rgba(15,91,82,.25)}
.check-area{background:var(--soft)}
.check-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:24px}
.checklist-card,.notice-card{padding:30px;border-radius:var(--radius-lg);background:#fff;border:1px solid var(--line)}
.checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:13px;margin:22px 0 0;padding:0;list-style:none}
.checklist li{display:flex;align-items:flex-start;gap:10px;padding:14px;border-radius:13px;background:var(--paper);font-size:14px;font-weight:700}
.checklist li:before{content:"✓";display:grid;place-items:center;flex:none;width:22px;height:22px;border-radius:50%;background:var(--mint);color:var(--teal-dark);font-size:12px}
.notice-card{background:var(--cream)}
.notice-card h3,.checklist-card h3{margin:0;font-size:22px}
.notice-card p{margin:12px 0 0;color:#5f6257;font-size:14px}
.require-list{margin:20px 0 0;padding:0;list-style:none}
.require-list li{padding:12px 0;border-bottom:1px solid rgba(111,97,71,.16);font-size:14px}
.require-list li:last-child{border-bottom:0}
.require-list strong{color:var(--teal)}
.trouble-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:26px;align-items:start}
.trouble-summary{padding:31px;border-radius:var(--radius-lg);background:var(--teal);color:#fff}
.trouble-summary p{margin:14px 0;color:#d0e4dd;font-size:15px}
.trouble-summary .status-box{margin-top:25px;padding:16px;border-radius:14px;background:rgba(255,255,255,.1);font-size:13px}
.accordion-list{display:grid;gap:11px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden}
.faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:18px 20px;border:0;background:#fff;color:var(--ink);text-align:left;font-weight:800;font-size:15px}
.faq-question:hover{background:#fdfdfb}
.faq-question span:last-child{flex:none;color:var(--orange);font-size:21px;transition:transform .2s}
.faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
.faq-answer{display:none;padding:0 20px 19px;color:var(--muted);font-size:14px}
.faq-item.open .faq-answer{display:block}
.more-row{margin-top:23px;text-align:right}
.more-link{display:inline-flex;align-items:center;gap:7px;color:var(--teal);font-size:14px;font-weight:900}
.more-link:hover{color:var(--orange)}
.security-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:23px}
.security-panel{padding:34px;border-radius:var(--radius-lg);background:#dceee3}
.security-panel h2{margin:7px 0 13px;font-size:32px;line-height:1.25}
.security-panel p{margin:0;color:#476257}
.verify-list{display:grid;gap:12px;margin-top:24px}
.verify-item{display:flex;gap:14px;padding:14px;background:rgba(255,255,255,.65);border-radius:14px}
.verify-icon{display:grid;place-items:center;flex:none;width:29px;height:29px;border-radius:9px;background:var(--teal);color:#fff;font-size:14px;font-weight:900}
.verify-item h3{margin:0 0 2px;font-size:15px}
.verify-item p{font-size:13px}
.version-panel{padding:34px;border-radius:var(--radius-lg);background:var(--ink);color:#fff}
.version-panel .tag{background:rgba(242,107,56,.2);color:#ffd8c9}
.version-panel h3{margin:16px 0 10px;font-size:27px}
.version-panel p{margin:0;color:#bdc9c3;font-size:14px}
.version-code{margin:24px 0;padding:16px;border:1px dashed rgba(255,255,255,.28);border-radius:13px;font-size:15px;color:#e4eee9}
.version-code b{display:block;margin-bottom:3px;color:#8ed0b9;font-size:12px}
.feedback-section{padding-bottom:100px}
.feedback-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:28px}
.feedback-copy{padding:34px;border-radius:var(--radius-lg);background:var(--cream)}
.feedback-copy h2{margin:7px 0 14px;font-size:32px;line-height:1.3}
.feedback-copy p{margin:0;color:#5d6258;font-size:15px}
.contact-points{margin:24px 0 0;padding:0;list-style:none}
.contact-points li{padding:10px 0;border-bottom:1px solid rgba(111,97,71,.16);font-size:14px;font-weight:700}
.feedback-form{padding:29px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.field{display:grid;gap:7px;margin-bottom:14px}
.field label{font-size:13px;font-weight:800}
.field input,.field select,.field textarea{width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:11px;background:#fff;color:var(--ink);outline:none;transition:.2s}
.field textarea{min-height:100px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(15,91,82,.1)}
.form-check{display:flex;align-items:flex-start;gap:9px;margin:4px 0 17px;color:var(--muted);font-size:12px}
.form-check input{accent-color:var(--teal);margin-top:5px}
.form-message{display:none;margin-top:14px;padding:10px 12px;border-radius:10px;background:var(--soft);color:var(--teal-dark);font-size:13px;font-weight:700}
.footer{padding:65px 0 0;background:var(--ink);color:#edf4ef}
.footer-grid{display:grid;grid-template-columns:1.55fr repeat(4,1fr);gap:28px;padding-bottom:46px}
.footer .brand{color:#fff}
.footer .brand-mark{background:var(--orange)}
.footer .brand-sub{color:#abc3b8}
.footer-brand p{max-width:285px;margin:17px 0 0;color:#afc0b8;font-size:14px;line-height:1.75}
.footer h3{margin:4px 0 15px;color:#fff;font-size:14px}
.footer-links{display:grid;gap:8px}
.footer-links a{color:#b5c7be;font-size:13px;transition:.2s}
.footer-links a:hover{color:#fff;transform:translateX(2px)}
.risk{padding:18px 0;border-top:1px solid rgba(255,255,255,.12);color:#aebfb7;font-size:12px;line-height:1.8}
.copyright{display:flex;justify-content:space-between;gap:18px;padding:17px 0;color:#8fa59a;font-size:12px}
@media(max-width:1024px){
  .nav a{padding:8px 7px;font-size:13px}
  .brand{min-width:195px}
  .download-grid{gap:14px}
  .steps-wrap{grid-template-columns:220px 1fr;gap:28px}
  .step-card{grid-template-columns:56px 1fr 125px}
  .footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}
}
@media(max-width:768px){
  .container{width:min(calc(100% - 32px),var(--max))}
  .header-inner{height:67px}
  .brand{min-width:0}
  .brand-name{font-size:13px}
  .nav{display:none;position:absolute;left:0;right:0;top:67px;padding:14px 16px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
  .nav.open{display:flex}
  .nav a{padding:12px}
  .menu-toggle{display:block}
  .header-actions .btn{display:none}
  .section{padding:66px 0}
  .section-head{display:block;margin-bottom:24px}
  .section-intro{margin-top:14px}
  .page-top{padding:39px 0 48px}
  .page-heading h1{font-size:38px}
  .download-grid,.check-grid,.trouble-grid,.security-grid,.feedback-grid{grid-template-columns:1fr}
  .download-card{min-height:0}
  .steps-wrap{grid-template-columns:1fr}
  .steps-aside{position:static}
  .step-card{grid-template-columns:58px 1fr}
  .step-visual{grid-column:2}
  .checklist{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
  .footer-brand{grid-column:span 2}
}
@media(max-width:520px){
  body{font-size:15px}
  .container{width:min(calc(100% - 26px),var(--max))}
  .brand-mark{width:35px;height:35px}
  .brand-sub{font-size:9px}
  .page-heading h1{font-size:33px;letter-spacing:-1.4px}
  .page-heading p{font-size:15px}
  .section h2{font-size:27px}
  .download-card,.checklist-card,.notice-card,.trouble-summary,.security-panel,.version-panel,.feedback-copy,.feedback-form{padding:23px}
  .step-card{grid-template-columns:1fr;padding:18px}
  .step-visual{grid-column:auto;height:100px}
  .step-num{font-size:24px}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .copyright{display:block}
  .copyright span{display:block;margin:4px 0}
  .more-row{text-align:left}
}

/* roulang page: category2 */
:root{
      --teal:#0f5b52;--teal-dark:#0a443d;--orange:#f26b38;--orange-dark:#d95527;
      --cream:#f7f1e8;--paper:#fbfaf6;--mint:#c9e4d5;--ink:#17201d;--muted:#66746e;
      --line:#dce4de;--white:#fff;--soft:#edf5ef;--danger:#9c4c45;
      --radius:18px;--radius-lg:26px;--shadow:0 14px 38px rgba(23,32,29,.09);
      --shadow-sm:0 6px 18px rgba(23,32,29,.06);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(251,250,246,.95);border-bottom:1px solid rgba(15,91,82,.11);backdrop-filter:blur(12px)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;min-width:220px}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--teal);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:inset 0 -5px 0 rgba(0,0,0,.12)}
    .brand-name{font-weight:800;font-size:15px;line-height:1.25;letter-spacing:-.3px}
    .brand-sub{display:block;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.3px}
    .nav{display:flex;align-items:center;gap:4px}
    .nav a{padding:9px 11px;border-radius:9px;font-size:14px;font-weight:700;color:#40514a;transition:.2s}
    .nav a:hover,.nav a.active{background:var(--soft);color:var(--teal)}
    .header-actions{display:flex;gap:10px;align-items:center}
    .menu-toggle{display:none;border:0;background:transparent;padding:9px;color:var(--teal);font-size:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:12px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
    .btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(242,107,56,.35);outline-offset:3px}
    .btn-main{background:var(--orange);color:#fff}
    .btn-main:hover{background:var(--orange-dark)}
    .btn-teal{background:var(--teal);color:#fff}
    .btn-teal:hover{background:var(--teal-dark)}
    .btn-light{background:#fff;border-color:var(--line);color:var(--teal)}
    .btn-small{min-height:38px;padding:8px 13px;font-size:13px}
    .section{padding:88px 0}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
    .section h2{margin:7px 0 0;font-size:clamp(25px,3vw,38px);line-height:1.25;letter-spacing:-1px}
    .section-intro{max-width:590px;margin:0;color:var(--muted);font-size:15px}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.4px}
    .eyebrow:before{content:"";width:8px;height:8px;background:var(--orange);border-radius:50%}
    .tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:99px;font-size:12px;font-weight:800;line-height:1.4}
    .tag-green{background:var(--mint);color:var(--teal-dark)}
    .tag-orange{background:#ffe0d4;color:#a84725}
    .tag-cream{background:var(--cream);color:#795e3d}
    .tag-gray{background:#e8eeea;color:#526059}
    .page-hero{position:relative;overflow:hidden;padding:48px 0 50px;background:var(--cream);border-bottom:1px solid var(--line)}
    .page-hero:after{content:"";position:absolute;width:290px;height:290px;right:7%;top:-130px;border-radius:50%;background:var(--mint);opacity:.7}
    .page-hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:end}
    .breadcrumb{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:17px;color:var(--muted);font-size:13px}
    .breadcrumb span{color:#a0aaa4}
    .page-hero h1{max-width:750px;margin:0;font-size:clamp(34px,5vw,57px);line-height:1.15;letter-spacing:-2px}
    .page-hero p{max-width:760px;margin:17px 0 0;color:#52615a;font-size:16px}
    .update-stamp{position:relative;z-index:1;min-width:185px;padding:17px 19px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-sm)}
    .update-stamp strong{display:block;color:var(--teal);font-size:23px;line-height:1.15}
    .update-stamp span{display:block;margin-top:4px;color:var(--muted);font-size:12px}
    .latest-wrap{display:grid;grid-template-columns:.92fr 1.08fr;gap:22px;align-items:stretch}
    .version-hero-card{position:relative;overflow:hidden;padding:35px;background:var(--teal);color:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow)}
    .version-hero-card:after{content:"";position:absolute;right:-30px;bottom:-90px;width:250px;height:250px;border:30px solid rgba(255,255,255,.12);border-radius:50%}
    .version-hero-card .tag{background:rgba(255,255,255,.15);color:#fff}
    .version-number{position:relative;z-index:1;margin:22px 0 6px;font-size:clamp(50px,7vw,78px);font-weight:900;line-height:1;letter-spacing:-3px}
    .version-hero-card p{position:relative;z-index:1;margin:0;color:#d5e6df;max-width:370px}
    .version-date{position:relative;z-index:1;margin-top:26px;font-size:13px;color:#b9d6cb}
    .update-summary{display:grid;gap:14px}
    .summary-item{display:grid;grid-template-columns:43px 1fr;gap:15px;align-items:start;padding:19px 20px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-sm);transition:.2s}
    .summary-item:hover{transform:translateX(4px);border-color:#9dc8b8}
    .summary-icon{width:43px;height:43px;display:grid;place-items:center;background:var(--soft);border-radius:13px;color:var(--teal);font-weight:900}
    .summary-item h3{margin:0 0 3px;font-size:16px}
    .summary-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
    .timeline{position:relative;max-width:940px;margin:0 auto}
    .timeline:before{content:"";position:absolute;left:139px;top:18px;bottom:18px;width:2px;background:var(--mint)}
    .timeline-item{display:grid;grid-template-columns:115px 48px 1fr;gap:15px;position:relative;padding:0 0 26px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-date{padding-top:15px;color:var(--muted);font-weight:800;font-size:14px;text-align:right}
    .timeline-dot{position:relative;z-index:1;width:22px;height:22px;margin-top:13px;border:5px solid var(--paper);background:var(--orange);border-radius:50%;box-shadow:0 0 0 2px var(--orange)}
    .timeline-card{padding:21px 23px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:.25s}
    .timeline-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .timeline-top{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap}
    .timeline-card h3{margin:0;font-size:21px}
    .timeline-card p{margin:9px 0 0;color:var(--muted);font-size:14px}
    .timeline-list{display:flex;gap:10px;flex-wrap:wrap;margin-top:15px}
    .timeline-list span{padding:5px 9px;border-radius:8px;background:var(--soft);color:#4d6259;font-size:12px}
    .more-link{display:flex;align-items:center;justify-content:center;gap:9px;width:max-content;margin:32px auto 0;color:var(--teal);font-size:14px;font-weight:800;border-bottom:1px solid var(--teal);padding-bottom:3px}
    .more-link:hover{color:var(--orange);border-color:var(--orange)}
    .feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
    .feature-card{min-height:210px;padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);transition:.25s}
    .feature-card:hover{transform:translateY(-5px);border-color:#a6cfc0;box-shadow:var(--shadow)}
    .feature-no{display:inline-grid;width:37px;height:37px;place-items:center;background:var(--cream);color:var(--teal);border-radius:11px;font-weight:900}
    .feature-card h3{margin:18px 0 8px;font-size:18px}
    .feature-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}
    .prepare-section{background:var(--soft)}
    .prepare-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
    .checklist{padding:30px;background:#fff;border-radius:var(--radius-lg);border:1px solid #d5e7db}
    .checklist h3{margin:0 0 17px;font-size:22px}
    .check-list{display:grid;gap:14px;margin:0;padding:0;list-style:none}
    .check-list li{position:relative;padding:12px 0 12px 39px;border-bottom:1px solid var(--line);color:#45564e;font-size:14px}
    .check-list li:last-child{border-bottom:0}
    .check-list li:before{content:"✓";position:absolute;left:0;top:12px;width:25px;height:25px;display:grid;place-items:center;border-radius:50%;background:var(--mint);color:var(--teal-dark);font-weight:900}
    .notice-panel{padding:30px;background:var(--teal);color:#fff;border-radius:var(--radius-lg)}
    .notice-panel h3{margin:0 0 14px;font-size:23px}
    .notice-panel p{margin:0;color:#d5e8e0}
    .notice-panel ul{margin:20px 0 0;padding:0;list-style:none}
    .notice-panel li{padding:10px 0;border-top:1px solid rgba(255,255,255,.18);font-size:14px;color:#e2eee8}
    .notice-panel li:before{content:"•";margin-right:10px;color:#f6b28f}
    .faq-layout{display:grid;grid-template-columns:.78fr 1.22fr;gap:48px;align-items:start}
    .faq-aside{padding:28px;background:var(--cream);border-radius:var(--radius-lg)}
    .faq-aside h2{font-size:31px;margin:10px 0}
    .faq-aside p{margin:0;color:var(--muted);font-size:14px}
    .faq-list{display:grid;gap:11px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 19px;background:#fff;border:0;color:var(--ink);font-weight:800;text-align:left}
    .faq-question span:last-child{color:var(--teal);font-size:22px;transition:.2s}
    .faq-answer{display:none;padding:0 19px 18px;color:var(--muted);font-size:14px;line-height:1.75}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .subscribe-section{padding:0 0 96px}
    .subscribe-card{display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center;padding:38px 42px;background:var(--teal);color:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow)}
    .subscribe-card h2{margin:0;font-size:clamp(25px,3vw,37px);line-height:1.25}
    .subscribe-card p{max-width:680px;margin:10px 0 0;color:#d0e4dc;font-size:15px}
    .subscribe-actions{display:flex;gap:11px;align-items:center;flex-wrap:wrap}
    .subscribe-card .btn-light{border-color:rgba(255,255,255,.45);background:transparent;color:#fff}
    .subscribe-card .btn-light:hover{background:#fff;color:var(--teal)}
    .footer{padding:64px 0 22px;background:var(--ink);color:#e5eee9}
    .footer-grid{display:grid;grid-template-columns:1.45fr repeat(4,1fr);gap:28px;padding-bottom:39px}
    .footer .brand{color:#fff;min-width:0}
    .footer .brand-mark{background:var(--orange)}
    .footer .brand-sub{color:#a9bdb4}
    .footer-brand p{max-width:280px;margin:17px 0 0;color:#a9bdb4;font-size:13px}
    .footer h3{margin:6px 0 15px;color:#fff;font-size:14px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#b6c7bf;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .risk{padding:18px 0;border-top:1px solid rgba(255,255,255,.13);color:#adbbb5;font-size:12px;line-height:1.75}
    .copyright{display:flex;justify-content:space-between;gap:18px;padding-top:18px;color:#82948b;font-size:12px}
    @media(max-width:1024px){
      .nav{gap:0}.nav a{padding:8px;font-size:13px}
      .feature-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1.5fr repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--max))}
      .header-inner{height:68px}
      .brand{min-width:0}.brand-name{font-size:13px}
      .nav{display:none;position:absolute;top:68px;left:0;right:0;padding:16px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav.open{display:flex}.nav a{padding:13px 14px;font-size:15px}
      .menu-toggle{display:block}.header-actions .btn{display:none}
      .page-hero{padding:36px 0}.page-hero-inner{grid-template-columns:1fr;gap:24px}
      .update-stamp{width:max-content}
      .section{padding:65px 0}.section-head{display:block;margin-bottom:25px}.section-intro{margin-top:13px}
      .latest-wrap,.prepare-grid,.faq-layout{grid-template-columns:1fr}
      .timeline:before{left:10px}.timeline-item{grid-template-columns:26px 1fr;gap:14px}.timeline-date{grid-column:2;grid-row:1;padding:0;text-align:left;font-size:12px}.timeline-dot{grid-column:1;grid-row:1 / span 2;margin-top:1px}.timeline-card{grid-column:2;grid-row:2}
      .subscribe-card{grid-template-columns:1fr;padding:31px 26px}.subscribe-actions .btn{width:100%}
      .footer-grid{grid-template-columns:repeat(2,1fr)}.footer-brand{grid-column:span 2}
    }
    @media(max-width:520px){
      body{font-size:15px}.container{width:min(calc(100% - 28px),var(--max))}
      .brand-mark{width:35px;height:35px}.brand-sub{font-size:9px}
      .page-hero h1{font-size:34px}.page-hero p{font-size:14px}
      .feature-grid{grid-template-columns:1fr}.feature-card{min-height:auto}
      .version-hero-card{padding:28px}.version-number{font-size:54px}
      .timeline-card{padding:18px}.timeline-card h3{font-size:19px}
      .checklist,.notice-panel{padding:24px}
      .footer-grid{grid-template-columns:1fr}.footer-brand{grid-column:auto}.copyright{display:grid}
      .subscribe-section{padding-bottom:68px}
    }

/* roulang page: category3 */
:root{
      --teal:#0f5b52;--teal-dark:#0a443d;--orange:#f26b38;--orange-dark:#d95527;
      --cream:#f7f1e8;--paper:#fbfaf6;--mint:#c9e4d5;--ink:#17201d;--muted:#66746e;
      --line:#dce4de;--white:#fff;--soft:#edf5ef;--danger:#9c4c45;
      --radius:18px;--radius-lg:26px;--shadow:0 14px 38px rgba(23,32,29,.09);
      --shadow-sm:0 6px 18px rgba(23,32,29,.06);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(251,250,246,.94);border-bottom:1px solid rgba(15,91,82,.11);backdrop-filter:blur(12px)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;min-width:220px}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--teal);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:inset 0 -5px 0 rgba(0,0,0,.12)}
    .brand-name{font-weight:800;font-size:15px;line-height:1.25;letter-spacing:-.3px}
    .brand-sub{display:block;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.3px}
    .nav{display:flex;align-items:center;gap:4px}
    .nav a{padding:9px 11px;border-radius:9px;font-size:14px;font-weight:700;color:#40514a;transition:.2s}
    .nav a:hover,.nav a.active{background:var(--soft);color:var(--teal)}
    .header-actions{display:flex;gap:10px;align-items:center}
    .menu-toggle{display:none;border:0;background:transparent;padding:9px;color:var(--teal);font-size:22px}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:12px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s,color .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
    .btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(242,107,56,.35);outline-offset:3px}
    .btn-main{background:var(--orange);color:#fff}
    .btn-main:hover{background:var(--orange-dark)}
    .btn-teal{background:var(--teal);color:#fff}
    .btn-teal:hover{background:var(--teal-dark)}
    .btn-light{background:#fff;border-color:var(--line);color:var(--teal)}
    .btn-small{min-height:38px;padding:8px 13px;font-size:13px}
    .section{padding:88px 0}
    .section-alt{background:#fff}
    .section-mint{background:#edf5ef}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:34px}
    .section-head h2{margin:7px 0 0;font-size:clamp(26px,3vw,38px);line-height:1.25;letter-spacing:-1px}
    .section-intro{max-width:550px;margin:0;color:var(--muted);font-size:15px}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.4px}
    .eyebrow:before{content:"";width:8px;height:8px;background:var(--orange);border-radius:50%}
    .tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:99px;font-size:12px;font-weight:800;line-height:1.4}
    .tag-green{background:var(--mint);color:var(--teal-dark)}
    .tag-orange{background:#ffe0d4;color:#a84725}
    .tag-cream{background:var(--cream);color:#795e3d}
    .tag-gray{background:#e8eeea;color:#526059}
    .page-banner{position:relative;overflow:hidden;padding:48px 0 54px;background:var(--cream);border-bottom:1px solid var(--line)}
    .page-banner:after{content:"";position:absolute;width:330px;height:330px;right:7%;top:-150px;border-radius:50%;background:var(--mint);opacity:.85}
    .page-banner:before{content:"";position:absolute;width:180px;height:180px;right:17%;bottom:-110px;background:var(--orange);border-radius:36px;transform:rotate(24deg);opacity:.15}
    .breadcrumbs{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:8px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:18px}
    .breadcrumbs span{color:#93a099}
    .banner-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,760px) 1fr;gap:35px;align-items:end}
    .page-banner h1{max-width:760px;margin:9px 0 14px;font-size:clamp(35px,5vw,56px);line-height:1.14;letter-spacing:-2px}
    .page-banner p{max-width:720px;margin:0;color:#4d5e56;font-size:17px}
    .update-box{padding:17px 19px;background:rgba(255,255,255,.77);border:1px solid rgba(15,91,82,.14);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
    .update-box strong{display:block;color:var(--teal);font-size:13px}
    .update-box span{display:block;margin-top:3px;color:var(--muted);font-size:13px}
    .filter-bar{display:flex;gap:10px;overflow:auto;padding:4px 0 9px;scrollbar-width:thin}
    .filter-chip{white-space:nowrap;padding:10px 16px;border:1px solid var(--line);border-radius:99px;background:#fff;color:#53635c;font-weight:800;font-size:14px;transition:.2s}
    .filter-chip:hover,.filter-chip.active{border-color:var(--teal);background:var(--teal);color:#fff}
    .content-grid{display:grid;grid-template-columns:1.18fr .82fr;gap:22px}
    .games-main{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
    .game-card{overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);transition:.25s}
    .game-card:hover{transform:translateY(-5px);border-color:#95bcad;box-shadow:var(--shadow)}
    .game-cover{position:relative;height:214px;overflow:hidden}
    .game-cover:before,.mini-cover:before{content:"";position:absolute;inset:0}
    .cover-a:before{background:linear-gradient(135deg,#154f48 0%,#4d9884 44%,#ebc077 44%,#f6e6bd 100%)}
    .cover-b:before{background:linear-gradient(135deg,#e78852 0%,#f7c99b 43%,#276c62 43%,#bde0c4 100%)}
    .cover-c:before{background:linear-gradient(135deg,#284d47 0%,#9ecdbd 49%,#f2a76e 49%,#f9e2c0 100%)}
    .cover-d:before{background:linear-gradient(135deg,#f3ddb5 0%,#fff4de 46%,#488979 46%,#164f47 100%)}
    .cover-ornament{position:absolute;right:22px;bottom:20px;width:88px;height:88px;border:10px solid rgba(255,255,255,.45);border-radius:24px;transform:rotate(18deg)}
    .cover-pixels{position:absolute;left:20px;top:22px;width:78px;height:78px;background-image:radial-gradient(rgba(255,255,255,.72) 2px,transparent 2.5px);background-size:14px 14px}
    .game-body{padding:21px}
    .game-meta{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;margin-bottom:12px}
    .game-card h3{margin:0 0 9px;font-size:21px;line-height:1.35}
    .game-card p{margin:0;color:var(--muted);font-size:14px}
    .card-link{display:inline-flex;align-items:center;gap:7px;margin-top:17px;color:var(--teal);font-size:14px;font-weight:800}
    .card-link:hover{color:var(--orange)}
    .side-list{display:grid;gap:18px}
    .compact-card{display:grid;grid-template-columns:126px minmax(0,1fr);gap:15px;padding:13px;background:var(--soft);border:1px solid #dbeae0;border-radius:var(--radius);transition:.2s}
    .compact-card:hover{background:#fff;box-shadow:var(--shadow-sm);transform:translateY(-2px)}
    .mini-cover{position:relative;min-height:116px;border-radius:12px;overflow:hidden}
    .compact-card h3{margin:8px 0 6px;font-size:16px;line-height:1.4}
    .compact-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
    .list-footer{margin-top:30px;text-align:center}
    .timeline{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .timeline-item{position:relative;padding:23px 22px 22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm)}
    .timeline-item:before{content:"";position:absolute;top:-8px;left:25px;width:15px;height:15px;border-radius:50%;background:var(--orange);border:4px solid var(--paper)}
    .timeline-item time{display:block;color:var(--teal);font-size:13px;font-weight:800}
    .timeline-item h3{margin:9px 0 7px;font-size:19px}
    .timeline-item p{margin:0;color:var(--muted);font-size:14px}
    .tips-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px;align-items:stretch}
    .tips-visual{position:relative;min-height:405px;overflow:hidden;padding:34px;background:var(--teal);border-radius:var(--radius-lg);color:#fff}
    .tips-visual:before{content:"";position:absolute;inset:0;background-image:radial-gradient(rgba(255,255,255,.16) 1px,transparent 1px);background-size:13px 13px}
    .tips-visual h2,.tips-visual p,.tip-screen{position:relative;z-index:1}
    .tips-visual h2{margin:10px 0 12px;font-size:34px;line-height:1.25}
    .tips-visual p{max-width:350px;margin:0;color:#d4e8df}
    .tip-screen{position:absolute;right:31px;bottom:28px;width:73%;padding:18px;border:1px solid rgba(255,255,255,.36);border-radius:19px;background:rgba(255,255,255,.12)}
    .tip-screen b{display:block;font-size:13px}
    .progress-line{height:8px;margin:13px 0 10px;border-radius:99px;background:rgba(255,255,255,.24);overflow:hidden}
    .progress-line i{display:block;width:72%;height:100%;background:#f5b66e;border-radius:99px}
    .tip-screen small{color:#cce2d8}
    .tips-list{display:grid;gap:14px}
    .tip-item{display:grid;grid-template-columns:52px 1fr;gap:17px;padding:18px;border-bottom:1px solid var(--line)}
    .tip-item:last-child{border-bottom:0}
    .tip-no{display:grid;place-items:center;width:45px;height:45px;border-radius:14px;background:var(--cream);color:var(--orange);font-size:14px;font-weight:900}
    .tip-item h3{margin:1px 0 5px;font-size:18px}
    .tip-item p{margin:0;color:var(--muted);font-size:14px}
    .notice-panel{display:grid;grid-template-columns:1fr 1fr;gap:22px;padding:34px;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}
    .notice-block{padding:6px 10px}
    .notice-block + .notice-block{border-left:1px solid var(--line);padding-left:32px}
    .notice-icon{display:grid;place-items:center;width:44px;height:44px;border-radius:14px;background:#dcefe5;color:var(--teal);font-size:21px}
    .notice-block h2{margin:13px 0 9px;font-size:25px}
    .notice-block p{margin:0;color:var(--muted);font-size:14px}
    .notice-list{display:grid;gap:10px;margin:17px 0 0;padding:0;list-style:none}
    .notice-list li{position:relative;padding-left:20px;font-size:14px;color:#43534c}
    .notice-list li:before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:900}
    .faq-wrap{display:grid;grid-template-columns:.75fr 1.25fr;gap:42px;align-items:start}
    .faq-intro h2{margin:9px 0 14px;font-size:clamp(27px,3vw,38px);line-height:1.27}
    .faq-intro p{margin:0;color:var(--muted)}
    .faq-list{display:grid;gap:10px}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:15px;overflow:hidden}
    .faq-question{display:flex;width:100%;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px;border:0;background:#fff;color:var(--ink);text-align:left;font-weight:800;font-size:15px}
    .faq-question span:last-child{color:var(--teal);font-size:21px;transition:.2s}
    .faq-item.active .faq-question span:last-child{transform:rotate(45deg)}
    .faq-answer{display:none;padding:0 20px 19px;color:var(--muted);font-size:14px}
    .faq-item.active .faq-answer{display:block}
    .cta-panel{position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:40px 45px;background:var(--teal);border-radius:var(--radius-lg);color:#fff}
    .cta-panel:after{content:"";position:absolute;right:-50px;top:-70px;width:230px;height:230px;border:28px solid rgba(255,255,255,.1);border-radius:50%}
    .cta-panel h2{position:relative;z-index:1;margin:0 0 8px;font-size:31px}
    .cta-panel p{position:relative;z-index:1;max-width:670px;margin:0;color:#c9e4d5}
    .cta-panel .btn{position:relative;z-index:1;flex:none}
    .footer{padding:63px 0 22px;background:#17201d;color:#e7eee9}
    .footer-grid{display:grid;grid-template-columns:1.65fr repeat(4,1fr);gap:30px;padding-bottom:39px;border-bottom:1px solid rgba(201,228,213,.18)}
    .footer .brand{color:#fff}
    .footer .brand-sub{color:#aac2b7}
    .footer-brand p{max-width:310px;margin:16px 0 0;color:#afc2b9;font-size:13px;line-height:1.8}
    .footer h3{margin:4px 0 14px;color:#fff;font-size:14px}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#afc2b9;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .risk{margin-top:22px;padding:14px 16px;border-radius:12px;background:rgba(255,255,255,.055);color:#bdcec6;font-size:12px;line-height:1.75}
    .copyright{display:flex;justify-content:space-between;gap:20px;margin-top:19px;color:#86a096;font-size:12px}
    @media(max-width:1024px){
      .brand{min-width:185px}.nav a{padding:8px;font-size:13px}
      .content-grid{grid-template-columns:1fr}.side-list{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:1.6fr repeat(2,1fr)}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--max))}
      .header-inner{height:68px}.header-actions .btn{display:none}.menu-toggle{display:block}
      .nav{display:none;position:absolute;left:0;right:0;top:68px;padding:16px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav.open{display:flex}.nav a{padding:12px 15px}
      .page-banner{padding:38px 0 43px}.banner-grid{grid-template-columns:1fr}.update-box{max-width:330px}
      .section{padding:64px 0}.section-head{display:block;margin-bottom:26px}.section-intro{margin-top:14px}
      .games-main,.timeline{grid-template-columns:1fr}.side-list{grid-template-columns:1fr}
      .tips-layout,.faq-wrap,.notice-panel{grid-template-columns:1fr}.notice-block + .notice-block{border-left:0;border-top:1px solid var(--line);padding:25px 10px 6px}
      .tips-visual{min-height:340px}.footer-grid{grid-template-columns:repeat(2,1fr)}.footer-brand{grid-column:span 2}
      .cta-panel{display:block;padding:32px}.cta-panel .btn{margin-top:21px;width:100%}
    }
    @media(max-width:520px){
      body{font-size:15px}.brand{min-width:0}.brand-name{font-size:13px}.brand-mark{width:35px;height:35px}
      .page-banner h1{font-size:34px}.page-banner p{font-size:15px}.game-cover{height:188px}
      .compact-card{grid-template-columns:104px minmax(0,1fr)}.mini-cover{min-height:106px}
      .tips-visual h2{font-size:28px}.tip-screen{right:18px;bottom:18px;width:82%}
      .faq-question{padding:16px}.footer-grid{gap:25px 18px}.copyright{display:block}.copyright span{display:block;margin-top:5px}
    }

/* roulang page: category4 */
:root{
      --teal:#0f5b52;--teal-dark:#0a443d;--orange:#f26b38;--orange-dark:#d95527;
      --cream:#f7f1e8;--paper:#fbfaf6;--mint:#c9e4d5;--ink:#17201d;--muted:#66746e;
      --line:#dce4de;--white:#fff;--soft:#edf5ef;--danger:#9c4c45;
      --radius:18px;--radius-lg:26px;--shadow:0 14px 38px rgba(23,32,29,.09);
      --shadow-sm:0 6px 18px rgba(23,32,29,.06);--max:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button,input,select,textarea{outline:none}
    ::selection{background:var(--mint);color:var(--teal-dark)}
    .container{width:min(calc(100% - 48px),var(--max));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(251,250,246,.94);border-bottom:1px solid rgba(15,91,82,.11);backdrop-filter:blur(12px);transition:box-shadow .2s}
    .site-header.scrolled{box-shadow:0 5px 18px rgba(23,32,29,.06)}
    .header-inner{height:76px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:10px;min-width:220px}
    .brand:hover{color:var(--teal)}
    .brand-mark{width:38px;height:38px;border-radius:12px;background:var(--teal);display:grid;place-items:center;color:#fff;font-weight:900;box-shadow:inset 0 -5px 0 rgba(0,0,0,.12)}
    .brand-name{font-weight:800;font-size:15px;line-height:1.25;letter-spacing:-.3px}
    .brand-sub{display:block;color:var(--muted);font-size:10px;font-weight:600;letter-spacing:.3px}
    .nav{display:flex;align-items:center;gap:4px}
    .nav a{padding:9px 11px;border-radius:9px;font-size:14px;font-weight:700;color:#40514a;transition:.2s}
    .nav a:hover,.nav a.active{background:var(--soft);color:var(--teal)}
    .header-actions{display:flex;gap:10px;align-items:center}
    .menu-toggle{display:none;border:0;background:transparent;padding:9px;color:var(--teal);font-size:22px;line-height:1}
    .btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:11px 19px;border:1px solid transparent;border-radius:12px;font-weight:800;font-size:14px;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s}
    .btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
    .btn:active{transform:translateY(0)}
    .btn:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(242,107,56,.35);outline-offset:3px}
    .btn-main{background:var(--orange);color:#fff}
    .btn-main:hover{background:var(--orange-dark);color:#fff}
    .btn-teal{background:var(--teal);color:#fff}
    .btn-teal:hover{background:var(--teal-dark);color:#fff}
    .btn-light{background:#fff;border-color:var(--line);color:var(--teal)}
    .btn-light:hover{border-color:var(--teal);color:var(--teal-dark)}
    .btn-small{min-height:38px;padding:8px 13px;font-size:13px}
    .section{padding:88px 0}
    .section-alt{background:var(--cream)}
    .section-mint{background:var(--soft)}
    .section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:34px}
    .section h2{margin:7px 0 0;font-size:clamp(26px,3vw,38px);line-height:1.25;letter-spacing:-1px}
    .section-intro{max-width:590px;margin:0;color:var(--muted);font-size:15px}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--teal);font-size:13px;font-weight:800;letter-spacing:.4px}
    .eyebrow:before{content:"";width:8px;height:8px;background:var(--orange);border-radius:50%}
    .tag{display:inline-flex;align-items:center;padding:4px 10px;border-radius:99px;font-size:12px;font-weight:800;line-height:1.4}
    .tag-green{background:var(--mint);color:var(--teal-dark)}
    .tag-orange{background:#ffe0d4;color:#a84725}
    .tag-cream{background:var(--cream);color:#795e3d}
    .tag-gray{background:#e8eeea;color:#526059}
    .crumb-wrap{padding:22px 0 0}
    .crumb{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:13px;white-space:nowrap;overflow:auto}
    .crumb a:hover{color:var(--teal)}
    .crumb i{font-style:normal;color:#9ba7a1}
    .category-banner{padding:32px 0 68px}
    .category-sheet{position:relative;overflow:hidden;padding:48px 54px;border:1px solid #d9e4dc;border-radius:var(--radius-lg);background:#fff;box-shadow:var(--shadow-sm)}
    .category-sheet:before{content:"";position:absolute;width:270px;height:270px;border-radius:50%;right:-78px;top:-132px;background:var(--mint);opacity:.72}
    .category-sheet:after{content:"";position:absolute;right:66px;bottom:-42px;width:164px;height:104px;background-image:radial-gradient(var(--orange) 1.4px,transparent 1.4px);background-size:12px 12px;opacity:.42}
    .banner-content{position:relative;z-index:1;max-width:790px}
    .banner-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:17px}
    .category-sheet h1{max-width:760px;margin:0;font-size:clamp(34px,5vw,58px);line-height:1.15;letter-spacing:-2px}
    .category-sheet p{max-width:700px;margin:20px 0 0;color:#51615a;font-size:16px}
    .topic-tabs{display:flex;gap:11px;overflow-x:auto;padding:4px 2px 10px;scrollbar-width:thin}
    .topic-tabs a{flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;padding:11px 16px;border-radius:12px;border:1px solid var(--line);background:#fff;color:#526159;font-size:14px;font-weight:800;transition:.2s}
    .topic-tabs a:hover,.topic-tabs a.active{background:var(--teal);border-color:var(--teal);color:#fff;box-shadow:var(--shadow-sm)}
    .topic-tabs b{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:7px;background:rgba(15,91,82,.1);font-size:11px}
    .topic-tabs a.active b,.topic-tabs a:hover b{background:rgba(255,255,255,.18)}
    .tutorial-grid{display:grid;grid-template-columns:1.08fr .92fr .92fr;gap:18px}
    .tutorial-card{position:relative;display:flex;flex-direction:column;min-height:268px;padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;transition:.25s}
    .tutorial-card:hover{transform:translateY(-5px);border-color:#9bc8b7;box-shadow:var(--shadow)}
    .tutorial-card.featured{grid-row:span 2;background:var(--teal);border-color:var(--teal);color:#fff;min-height:554px}
    .tutorial-card.featured:after{content:"";position:absolute;right:-24px;bottom:-26px;width:230px;height:230px;border:28px solid rgba(255,255,255,.1);border-radius:50%}
    .card-top{display:flex;align-items:center;justify-content:space-between;gap:10px;position:relative;z-index:1}
    .step-count{font-size:12px;font-weight:900;letter-spacing:.8px;color:var(--orange)}
    .featured .step-count{color:#ffb595}
    .tutorial-card h3{position:relative;z-index:1;margin:18px 0 10px;font-size:22px;line-height:1.35;letter-spacing:-.4px}
    .tutorial-card p{position:relative;z-index:1;margin:0;color:var(--muted);font-size:14px}
    .featured p{color:#d8e5df}
    .tutorial-foot{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:auto;padding-top:21px;color:var(--teal);font-size:13px;font-weight:800}
    .featured .tutorial-foot{color:#fff}
    .read-icon{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--soft);font-size:17px;transition:.2s}
    .featured .read-icon{background:rgba(255,255,255,.14)}
    .tutorial-card:hover .read-icon{transform:translateX(3px);background:var(--mint)}
    .featured:hover .read-icon{background:rgba(255,255,255,.24)}
    .list-more{display:flex;justify-content:center;margin-top:29px}
    .diagnosis-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .diagnosis-card{padding:25px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.25s}
    .diagnosis-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:#a5c7ba}
    .diagnosis-symbol{display:grid;place-items:center;width:45px;height:45px;margin-bottom:18px;border-radius:14px;background:#ffe0d4;color:#a84725;font-weight:900;font-size:19px}
    .diagnosis-card:nth-child(2) .diagnosis-symbol{background:var(--mint);color:var(--teal-dark)}
    .diagnosis-card:nth-child(3) .diagnosis-symbol{background:var(--cream);color:#795e3d}
    .diagnosis-card h3{margin:0 0 14px;font-size:19px}
    .diagnosis-card dl{margin:0}
    .diagnosis-card dt{margin:13px 0 4px;color:var(--teal);font-size:12px;font-weight:900;letter-spacing:.4px}
    .diagnosis-card dd{margin:0;color:var(--muted);font-size:14px}
    .process-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:58px;align-items:center}
    .process-note{padding:30px;border-radius:var(--radius-lg);background:var(--teal);color:#fff}
    .process-note h2{margin:11px 0 14px;font-size:34px}
    .process-note p{margin:0;color:#d5e4dd;font-size:15px}
    .process-note .notice{margin-top:23px;padding:14px 15px;border-radius:12px;background:rgba(255,255,255,.1);font-size:13px;line-height:1.65}
    .process-list{position:relative;display:grid;gap:0}
    .process-list:before{content:"";position:absolute;left:24px;top:28px;bottom:28px;width:1px;background:#b8d0c5}
    .process-item{position:relative;display:grid;grid-template-columns:50px 1fr 154px;gap:20px;align-items:center;padding:17px 0}
    .process-number{position:relative;z-index:1;display:grid;place-items:center;width:49px;height:49px;border-radius:15px;background:#fff;border:1px solid var(--line);color:var(--teal);font-size:15px;font-weight:900}
    .process-copy h3{margin:0 0 4px;font-size:18px}
    .process-copy p{margin:0;color:var(--muted);font-size:14px}
    .screen-thumb{height:82px;border:1px solid #d5e1da;border-radius:13px;background:linear-gradient(135deg,#d9ebe1 0 33%,#fff 33% 61%,#f7d7c6 61%);position:relative;overflow:hidden}
    .screen-thumb:after{content:"";position:absolute;left:18px;right:18px;bottom:16px;height:8px;border-radius:99px;background:rgba(15,91,82,.35);box-shadow:0 -20px 0 rgba(15,91,82,.16)}
    .compatibility-panel{display:grid;grid-template-columns:1.05fr .95fr;background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm)}
    .compatibility-main{padding:38px}
    .compatibility-main h2{margin:8px 0 12px;font-size:33px}
    .compatibility-main>p{margin:0;color:var(--muted);font-size:15px}
    .system-list{display:grid;gap:12px;margin-top:26px}
    .system-row{display:grid;grid-template-columns:116px 1fr auto;gap:14px;align-items:center;padding:15px 16px;border-radius:13px;background:var(--paper);border:1px solid #edf0ed}
    .system-row strong{font-size:14px;color:var(--teal)}
    .system-row span{color:var(--muted);font-size:13px}
    .ready{color:var(--teal-dark);font-size:12px;font-weight:900}
    .compatibility-art{position:relative;min-height:390px;background:var(--cream);overflow:hidden}
    .compatibility-art:before{content:"";position:absolute;width:290px;height:290px;border-radius:50%;right:55px;top:52px;background:var(--mint)}
    .compatibility-art:after{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(15,91,82,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(15,91,82,.08) 1px,transparent 1px);background-size:22px 22px}
    .device-frame{position:absolute;z-index:1;width:190px;height:320px;left:50%;top:37px;transform:translateX(-50%);padding:15px 11px;border:9px solid var(--ink);border-radius:29px;background:#fff;box-shadow:0 20px 30px rgba(23,32,29,.19)}
    .device-speaker{width:58px;height:7px;margin:0 auto 10px;border-radius:9px;background:#25302b}
    .device-screen{height:257px;padding:13px;border-radius:14px;background:linear-gradient(155deg,var(--teal),#328274);color:#fff}
    .device-screen b{font-size:12px}
    .device-line{height:8px;margin-top:15px;border-radius:99px;background:rgba(255,255,255,.45)}
    .device-line.short{width:64%}
    .device-tiles{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:16px}
    .device-tiles i{display:block;height:57px;border-radius:9px;background:linear-gradient(140deg,#f2a171,#ffe4c7 53%,#a3d6c4)}
    .device-tiles i:last-child{background:linear-gradient(140deg,#c6e6d5,#f7f1e8 55%,#f59567)}
    .faq-feedback{display:grid;grid-template-columns:.86fr 1.14fr;gap:28px;align-items:start}
    .feedback-card{padding:31px;border-radius:var(--radius-lg);background:var(--teal);color:#fff}
    .feedback-card h2{margin:10px 0 12px;font-size:31px}
    .feedback-card p{margin:0;color:#d5e4dd;font-size:15px}
    .feedback-points{display:grid;gap:11px;margin:24px 0}
    .feedback-points span{display:flex;gap:10px;align-items:flex-start;font-size:14px}
    .feedback-points b{display:grid;flex:0 0 auto;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--orange);font-size:12px}
    .feedback-form{margin-top:22px;display:grid;gap:12px}
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
    .field{width:100%;min-height:46px;padding:11px 13px;border:1px solid rgba(255,255,255,.25);border-radius:11px;background:rgba(255,255,255,.09);color:#fff;font-size:14px}
    .field::placeholder{color:#c4d9d0}
    .field:focus{border-color:#ffb08d;background:rgba(255,255,255,.15)}
    textarea.field{min-height:97px;resize:vertical}
    .form-check{display:flex;align-items:flex-start;gap:8px;color:#d9e8e1;font-size:12px;line-height:1.5}
    .form-check input{margin-top:4px;accent-color:var(--orange)}
    .faq-list{display:grid;gap:12px}
    .faq-item{border:1px solid var(--line);border-radius:15px;background:#fff;overflow:hidden;transition:border-color .2s,box-shadow .2s}
    .faq-item[open]{border-color:#9ec6b6;box-shadow:var(--shadow-sm)}
    .faq-item summary{display:flex;align-items:center;gap:14px;min-height:64px;padding:16px 19px;list-style:none;cursor:pointer;font-weight:800;font-size:16px}
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:before{content:"＋";display:grid;place-items:center;flex:0 0 auto;width:26px;height:26px;border-radius:9px;background:var(--soft);color:var(--teal);font-size:18px;line-height:1}
    .faq-item[open] summary:before{content:"−";background:var(--teal);color:#fff}
    .faq-answer{padding:0 20px 19px 59px;color:var(--muted);font-size:14px}
    .footer{padding:66px 0 23px;background:var(--ink);color:#e5eee8}
    .footer-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:29px;padding-bottom:41px;border-bottom:1px solid rgba(201,228,213,.17)}
    .footer .brand{color:#fff;min-width:auto}
    .footer .brand-mark{background:var(--orange)}
    .footer .brand-sub{color:#aebdb5}
    .footer-brand p{max-width:295px;margin:15px 0 0;color:#aebdb5;font-size:13px;line-height:1.75}
    .footer h3{margin:0 0 14px;color:#fff;font-size:14px;font-weight:800}
    .footer-links{display:grid;gap:8px}
    .footer-links a{color:#b7c5be;font-size:13px;transition:.2s}
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .risk{margin-top:22px;padding:14px 16px;border-radius:12px;background:rgba(255,255,255,.055);color:#b9c7c0;font-size:12px;line-height:1.7}
    .copyright{display:flex;justify-content:space-between;gap:18px;margin-top:20px;color:#83958b;font-size:12px}
    @media (max-width:1024px){
      .nav a{padding:8px 8px;font-size:13px}
      .brand{min-width:195px}
      .tutorial-grid{grid-template-columns:1fr 1fr}
      .tutorial-card.featured{grid-row:span 1;grid-column:span 2;min-height:300px}
      .process-layout{gap:34px}
      .footer-grid{grid-template-columns:1.4fr repeat(2,1fr)}
    }
    @media (max-width:768px){
      .container{width:min(calc(100% - 32px),var(--max))}
      .header-inner{height:68px}
      .brand{min-width:0}
      .brand-name{font-size:13px}
      .brand-sub{font-size:9px}
      .brand-mark{width:34px;height:34px;border-radius:10px}
      .menu-toggle{display:block}
      .nav{display:none;position:absolute;left:0;right:0;top:68px;padding:15px 16px 19px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .nav.open{display:flex}
      .nav a{padding:12px 14px;font-size:15px}
      .header-actions .btn{display:none}
      .category-banner{padding:24px 0 49px}
      .category-sheet{padding:33px 25px}
      .category-sheet h1{letter-spacing:-1.4px}
      .section{padding:65px 0}
      .section-head{display:block;margin-bottom:26px}
      .section-intro{margin-top:13px}
      .tutorial-grid,.diagnosis-grid,.faq-feedback,.compatibility-panel,.process-layout{grid-template-columns:1fr}
      .tutorial-card.featured{grid-column:auto;min-height:290px}
      .process-note h2,.compatibility-main h2,.feedback-card h2{font-size:28px}
      .process-item{grid-template-columns:49px 1fr}
      .screen-thumb{display:none}
      .compatibility-art{min-height:345px}
      .compatibility-main{padding:29px 24px}
      .system-row{grid-template-columns:98px 1fr}
      .system-row .ready{grid-column:2}
      .footer-grid{grid-template-columns:1fr 1fr;gap:30px 20px}
      .footer-brand{grid-column:1/-1}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .container{width:min(calc(100% - 28px),var(--max))}
      .category-sheet{padding:29px 21px;border-radius:20px}
      .category-sheet p{font-size:14px}
      .banner-meta{gap:7px}
      .section{padding:54px 0}
      .section h2{font-size:27px}
      .tutorial-grid{grid-template-columns:1fr}
      .tutorial-card,.tutorial-card.featured{min-height:252px;padding:21px}
      .tutorial-card h3{font-size:20px}
      .diagnosis-card{padding:21px}
      .process-note{padding:25px 22px}
      .process-item{gap:14px}
      .process-copy h3{font-size:16px}
      .process-copy p{font-size:13px}
      .system-row{grid-template-columns:1fr;gap:5px}
      .system-row .ready{grid-column:auto}
      .compatibility-art{min-height:315px}
      .device-frame{transform:translateX(-50%) scale(.88);transform-origin:top center}
      .feedback-card{padding:25px 21px}
      .form-row{grid-template-columns:1fr}
      .faq-item summary{padding:14px 15px;font-size:14px}
      .faq-answer{padding:0 15px 16px 54px;font-size:13px}
      .footer{padding-top:51px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px 16px}
      .footer h3{font-size:13px}
      .footer-links a{font-size:12px}
      .copyright{display:grid;gap:4px}
      .btn{width:100%}
    }