/* roulang page: index */
:root{
  --green:#176B5C;--green-dark:#105446;--green-soft:#EAF1EC;--orange:#C96D4B;
  --ink:#202A27;--muted:#6A716C;--line:#DCE2DB;--sand:#F6F4EE;--white:#fff;
  --deep:#173B34;--radius:16px;--radius-sm:10px;--shadow:0 14px 34px rgba(23,57,49,.08);
  --shadow-sm:0 8px 20px rgba(23,57,49,.06);--container:1200px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--sand);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}button{cursor:pointer}img{max-width:100%;display:block}.container{width:min(calc(100% - 48px),var(--container));margin:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:20px;top:12px;z-index:1000;background:#fff;padding:8px 14px;border-radius:8px;color:var(--green)}
.site-header{position:sticky;top:0;z-index:100;background:rgba(246,244,238,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,226,219,.9)}.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;font-weight:750;font-size:17px;letter-spacing:.01em}.seal{display:grid;place-items:center;width:34px;height:34px;border:2px solid var(--green);border-radius:9px;color:var(--green);font-size:14px;font-weight:800}.desktop-nav{display:flex;align-items:center;gap:5px;margin-left:auto}.desktop-nav a{position:relative;padding:24px 13px 22px;color:#4c5752;font-size:14px;font-weight:600;transition:.2s}.desktop-nav a:hover,.desktop-nav a.active{color:var(--green)}.desktop-nav a.active:after{content:"";position:absolute;height:2px;left:13px;right:13px;bottom:15px;background:var(--green);border-radius:4px}.nav-download,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:#fff;border:1px solid var(--green);border-radius:8px;padding:11px 17px;font-weight:700;font-size:14px;transition:.22s}.nav-download:hover,.btn-primary:hover{background:var(--green-dark);border-color:var(--green-dark);box-shadow:0 7px 18px rgba(16,84,70,.2);transform:translateY(-1px)}.menu-toggle{display:none;background:none;border:0;width:44px;height:44px;color:var(--green)}.menu-toggle svg{width:25px;height:25px}.mobile-panel{display:none}
main{overflow:hidden}.section{padding:88px 0}.section-soft{background:var(--green-soft)}.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}.eyebrow:before{content:"";width:20px;height:2px;background:var(--orange)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}.section-head h2{margin:8px 0 0;font-size:30px;line-height:1.35;letter-spacing:-.03em}.section-head p{max-width:460px;margin:0;color:var(--muted);font-size:15px}.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-weight:750;font-size:14px;white-space:nowrap}.text-link:hover{color:var(--green-dark);text-decoration:underline}.arrow{font-size:19px;line-height:1}
.hero{padding:70px 0 44px;background:linear-gradient(115deg,#F6F4EE 0%,#F6F4EE 63%,#EAF1EC 63%,#EAF1EC 100%)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}.hero h1{font-size:46px;line-height:1.25;letter-spacing:-.05em;margin:13px 0 18px;max-width:650px}.hero h1 em{font-style:normal;color:var(--green)}.hero-copy{color:var(--muted);font-size:17px;max-width:590px;margin:0}.hero-actions{display:flex;gap:12px;margin-top:28px;flex-wrap:wrap}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid #AEBAB2;background:transparent;color:var(--ink);padding:11px 17px;border-radius:8px;font-size:14px;font-weight:700;transition:.22s}.btn-secondary:hover{border-color:var(--green);color:var(--green);background:#fff}.phone-stage{height:370px;position:relative;display:flex;align-items:center;justify-content:center}.circle-grid{position:absolute;width:325px;height:325px;border-radius:50%;border:1px solid rgba(23,107,92,.2);background:repeating-radial-gradient(circle at center,transparent 0,transparent 36px,rgba(23,107,92,.07) 37px,transparent 38px)}.phone{position:relative;width:190px;height:348px;border:8px solid #20362f;border-radius:29px;background:#fbfcfa;box-shadow:18px 20px 0 rgba(23,107,92,.11),0 18px 32px rgba(23,57,49,.18);padding:19px 13px}.phone:before{content:"";position:absolute;top:7px;left:50%;width:58px;height:5px;transform:translateX(-50%);background:#20362f;border-radius:8px}.app-title{font-size:11px;color:var(--muted);margin:4px 0 16px}.app-banner{height:78px;border-radius:11px;background:var(--green);padding:12px;color:#fff}.app-banner strong{display:block;font-size:14px}.app-banner span{font-size:10px;opacity:.82}.app-lines{display:grid;gap:10px;margin-top:16px}.app-line{height:10px;border-radius:8px;background:#e7ece8}.app-line:nth-child(2){width:72%}.app-line:nth-child(3){width:87%}.app-card{margin-top:16px;padding:11px;border:1px solid var(--line);border-radius:10px}.app-card b{font-size:11px;display:block}.app-card small{color:var(--muted);font-size:10px}.hero-metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;margin-top:48px}.metric{background:#fff;padding:17px 22px}.metric b{display:block;color:var(--green);font-size:17px}.metric span{font-size:13px;color:var(--muted)}
.entry-grid{display:grid;grid-template-columns:1.25fr .75fr .75fr;gap:16px}.entry-card{min-height:185px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:.22s;position:relative;overflow:hidden}.entry-card:hover{transform:translateY(-3px);border-color:#91B4A9;box-shadow:var(--shadow-sm)}.entry-card:first-child{grid-row:span 2;background:var(--deep);color:#fff;min-height:386px}.entry-card:first-child p{color:#c5d5cf}.entry-card .num{display:block;color:var(--orange);font-size:13px;font-weight:800;letter-spacing:.08em}.entry-card h3{font-size:21px;margin:36px 0 9px;line-height:1.4}.entry-card:not(:first-child) h3{font-size:17px;margin:15px 0 5px}.entry-card p{font-size:14px;line-height:1.65;color:var(--muted);margin:0}.entry-icon{width:36px;height:36px;color:var(--green);border:1px solid #BED1C8;border-radius:10px;display:grid;place-items:center}.entry-icon svg{width:20px;height:20px}.entry-card:first-child .entry-icon{border-color:#789C91;color:#fff}.entry-card .mini-arrow{position:absolute;right:20px;bottom:16px;color:var(--green);font-size:21px}
.news-layout{display:grid;grid-template-columns:1.05fr .95fr;gap:24px}.feature-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.22s}.feature-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}.cover{height:225px;background:linear-gradient(135deg,#2D776A,#8FB8A9);position:relative;overflow:hidden}.cover:before,.cover:after{content:"";position:absolute;border:1px solid rgba(255,255,255,.3);border-radius:50%}.cover:before{width:230px;height:230px;right:-62px;top:-90px}.cover:after{width:150px;height:150px;left:-40px;bottom:-70px}.cover span{position:absolute;left:25px;bottom:21px;color:#fff;font-size:14px;font-weight:700;z-index:1}.feature-body{padding:22px 24px 24px}.meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px}.tag{display:inline-flex;align-items:center;padding:3px 9px;border-radius:20px;background:var(--green-soft);color:var(--green);font-size:12px;font-weight:750}.tag.orange{background:#F8E8E1;color:#A95537}.feature-body h3{font-size:23px;line-height:1.45;margin:13px 0 8px}.feature-body p{margin:0 0 12px;color:var(--muted);font-size:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.news-timeline{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:7px 25px}.news-item{display:grid;grid-template-columns:78px 1fr;gap:16px;padding:18px 0;border-bottom:1px solid var(--line)}.news-item:last-child{border:0}.news-date{color:var(--green);font-size:13px;font-weight:750;padding-top:2px}.news-item h3{margin:0 0 5px;font-size:16px;line-height:1.5}.news-item h3 a:hover{color:var(--green)}.news-item p{margin:0;color:var(--muted);font-size:13px;line-height:1.65;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.empty-state{grid-column:1/-1;padding:54px 24px;text-align:center;background:#fff;border:1px dashed #AABCB3;border-radius:var(--radius);color:var(--muted)}.empty-icon{font-size:30px;color:var(--green);display:block;margin-bottom:8px}
.announcement-list{border-top:1px solid var(--line)}.announcement{display:grid;grid-template-columns:78px 1fr auto;gap:20px;align-items:center;padding:15px 0;border-bottom:1px solid var(--line)}.date-box{display:grid;place-items:center;width:60px;height:60px;border-radius:10px;background:var(--green-soft);color:var(--green);font-size:12px;font-weight:800;line-height:1.3;text-align:center}.announcement h3{font-size:16px;margin:0;line-height:1.5}.announcement h3 a:hover{color:var(--green)}.announcement .status{font-size:12px;color:var(--orange);font-weight:750}
.download-panel{display:grid;grid-template-columns:.9fr 1.1fr;border-radius:var(--radius);overflow:hidden;background:#fff;border:1px solid var(--line)}.download-visual{min-height:360px;background:var(--green);padding:38px;position:relative;color:#fff;overflow:hidden}.download-visual:after{content:"";position:absolute;right:-100px;bottom:-110px;width:300px;height:300px;border:1px solid rgba(255,255,255,.23);border-radius:50%}.download-visual h2{position:relative;z-index:1;font-size:30px;line-height:1.35;margin:20px 0 6px}.download-visual p{position:relative;z-index:1;color:#D6E5DF;font-size:14px;max-width:300px}.mini-device{position:absolute;right:45px;bottom:-76px;width:166px;height:270px;border:6px solid #223F37;border-radius:25px;background:#f8fbf9;padding:22px 11px;transform:rotate(-7deg);box-shadow:0 15px 24px rgba(0,0,0,.19)}.mini-device:before{content:"";position:absolute;top:7px;left:54px;width:45px;height:4px;background:#223F37;border-radius:4px}.mini-device div{height:54px;border-radius:8px;background:var(--green);margin-bottom:10px}.mini-device i{display:block;height:8px;border-radius:8px;background:#e3ebe6;margin:9px 0}.download-info{padding:37px}.download-info h3{font-size:25px;margin:0 0 7px}.download-info p{color:var(--muted);font-size:14px;margin:0 0 18px}.platforms{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 21px}.platform{padding:5px 10px;border-radius:6px;border:1px solid var(--line);font-size:12px;font-weight:700}.platform.live{border-color:#8EB4A7;color:var(--green);background:var(--green-soft)}.platform.off{color:#8B918D;background:#FAFAF8}.download-bottom{display:flex;align-items:center;gap:18px}.qr{display:grid;place-items:center;width:76px;height:76px;border:1px solid var(--line);border-radius:8px;background:repeating-linear-gradient(45deg,#fff 0,#fff 4px,#edf1ed 4px,#edf1ed 6px);font-size:11px;color:var(--muted);text-align:center;line-height:1.35}.download-note{margin-top:15px;font-size:13px;color:var(--muted)}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}.steps:before{content:"";position:absolute;left:12%;right:12%;top:28px;height:1px;background:#B8CEC4}.step{position:relative;padding:0 20px 0 0}.step-number{position:relative;z-index:1;display:grid;place-items:center;width:57px;height:57px;border-radius:50%;background:#fff;border:1px solid #A9C3B8;color:var(--green);font-weight:800}.step h3{font-size:17px;margin:18px 0 6px}.step p{font-size:14px;line-height:1.65;color:var(--muted);margin:0}
.update-layout{display:grid;grid-template-columns:245px 1fr;gap:46px}.update-intro h2{font-size:30px;line-height:1.35;margin:10px 0}.update-intro p{color:var(--muted);font-size:15px}.version-current{display:inline-block;margin-top:13px;background:#F8E8E1;color:#A95537;border-radius:7px;padding:6px 10px;font-size:13px;font-weight:800}.changelog{border-top:1px solid var(--line)}.log-item{display:grid;grid-template-columns:105px 1fr;gap:24px;padding:20px 0;border-bottom:1px solid var(--line)}.log-version{color:var(--green);font-weight:800;font-size:15px}.log-version small{display:block;color:var(--muted);font-weight:500;font-size:12px;margin-top:2px}.log-content h3{font-size:17px;margin:0 0 7px}.log-content ul{margin:0;padding-left:19px;color:var(--muted);font-size:14px}.guide-scroller{display:grid;grid-template-columns:1.4fr repeat(3,.85fr);gap:16px}.guide-card{min-height:230px;padding:23px;border:1px solid var(--line);background:#fff;border-radius:var(--radius);position:relative;overflow:hidden;transition:.22s}.guide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#9BB9AF}.guide-card.large{background:#E1ECE6}.guide-card .guide-icon{position:absolute;right:18px;top:18px;width:42px;height:42px;border-radius:11px;background:#fff;color:var(--green);display:grid;place-items:center}.guide-card .guide-icon svg{width:23px}.guide-card h3{font-size:20px;margin:48px 0 7px;line-height:1.35}.guide-card:not(.large) h3{font-size:16px}.guide-card p{font-size:13px;color:var(--muted);line-height:1.65;margin:0}.guide-card .text-link{position:absolute;bottom:18px}
.security{display:grid;grid-template-columns:.78fr 1.22fr;gap:55px;align-items:center}.security-title{display:flex;align-items:center;gap:17px}.lock-icon{flex:0 0 auto;width:58px;height:58px;border:1px solid #9CBBAF;border-radius:15px;color:var(--green);display:grid;place-items:center;background:#fff}.lock-icon svg{width:28px}.security h2{font-size:29px;line-height:1.35;margin:0}.security p{color:var(--muted);font-size:14px;margin:8px 0}.security-checks{display:grid;gap:10px}.security-check{padding:14px 17px;background:#fff;border:1px solid #D5E1DA;border-radius:10px;font-size:14px}.security-check b{color:var(--green);margin-right:8px}
.dual-columns{display:grid;grid-template-columns:1fr 1fr;gap:24px}.column-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px}.column-card h2{font-size:23px;margin:0 0 17px}.compact-list{display:grid;gap:0}.compact-item{padding:14px 0;border-top:1px solid var(--line)}.compact-item:first-child{border-top:0}.compact-item small{color:var(--muted);font-size:12px}.compact-item h3{font-size:15px;line-height:1.5;margin:3px 0 0}.compact-item h3 a:hover{color:var(--green)}.media-quote{min-height:192px;padding:25px;background:#EAF1EC;border-radius:12px;position:relative}.media-quote:before{content:"“";position:absolute;right:22px;top:0;color:#B4CEC3;font-size:70px;line-height:1}.media-quote p{position:relative;font-size:17px;line-height:1.75;margin:0 0 19px}.media-quote span{color:var(--muted);font-size:13px}
.activity-track{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line)}.activity{padding:24px 28px 0 0;position:relative;border-right:1px solid var(--line);min-height:182px}.activity:not(:first-child){padding-left:28px}.activity:last-child{border:0}.activity:before{content:"";position:absolute;width:10px;height:10px;background:var(--orange);border-radius:50%;top:-5px}.activity.done:before{background:#A9B5AF}.activity time{display:block;color:var(--green);font-size:13px;font-weight:800}.activity.done time{color:#89928D}.activity h3{font-size:17px;line-height:1.45;margin:8px 0}.activity p{margin:0;color:var(--muted);font-size:13px;line-height:1.6}.activity .tag{margin-top:12px}
.faq-wrap{max-width:850px;margin:auto}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;display:flex;align-items:center;gap:14px;text-align:left;background:transparent;border:0;padding:19px 3px;color:var(--ink);font-weight:750;font-size:16px}.faq-number{display:grid;place-items:center;width:27px;height:27px;border-radius:7px;background:var(--green-soft);color:var(--green);font-size:11px;flex:0 0 auto}.faq-plus{margin-left:auto;color:var(--green);font-size:22px;font-weight:400;transition:.2s}.faq-answer{display:none;padding:0 44px 19px;color:var(--muted);font-size:14px}.faq-item.open .faq-answer{display:block}.faq-item.open .faq-plus{transform:rotate(45deg)}.faq-contact{text-align:center;margin:28px 0 0;color:var(--muted);font-size:14px}.faq-contact .btn-secondary{margin-left:11px}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;background:var(--deep);border-radius:var(--radius);padding:42px;color:#fff}.contact-info h2{font-size:29px;line-height:1.35;margin:10px 0}.contact-info p{color:#C4D6CF;font-size:14px}.contact-lines{margin-top:25px;border-top:1px solid rgba(255,255,255,.16)}.contact-line{padding:12px 0;border-bottom:1px solid rgba(255,255,255,.16);font-size:14px}.contact-line span{color:#A9C9BD;display:inline-block;width:74px}.feedback-form{background:#fff;border-radius:12px;padding:24px;color:var(--ink)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{margin-bottom:12px}.field label{display:block;font-size:13px;font-weight:700;margin-bottom:5px}.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:8px;background:#fff;padding:11px 12px;color:var(--ink);outline:none;transition:.2s}.field input{height:45px}.field textarea{height:84px;resize:vertical}.field input:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(23,107,92,.12)}.privacy{font-size:12px;color:var(--muted);margin:0 0 13px}.privacy input{accent-color:var(--green);vertical-align:middle}.feedback-form .btn-primary{border:0}.form-status{font-size:12px;color:var(--muted);margin:10px 0 0}
.site-footer{background:#153A32;color:#fff;padding:56px 0 0}.footer-top{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:34px;padding-bottom:40px}.footer-brand .brand{font-size:18px}.footer-brand .seal{border-color:#B9D6CA;color:#fff}.footer-brand p{color:#B9CCC4;font-size:13px;max-width:300px;margin:16px 0 0}.footer-group h3{font-size:14px;margin:0 0 13px;color:#DDEBE5}.footer-group a{display:block;color:#B9CCC4;font-size:13px;margin:7px 0}.footer-group a:hover{color:#fff;text-decoration:underline}.footer-bottom{padding:17px 0;border-top:1px solid rgba(255,255,255,.15);color:#9FB9AF;font-size:12px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}.to-top{position:fixed;right:20px;bottom:20px;width:44px;height:44px;border:1px solid #B8CEC4;border-radius:50%;background:#fff;color:var(--green);box-shadow:var(--shadow-sm);display:grid;place-items:center;opacity:0;pointer-events:none;transition:.2s;z-index:40}.to-top.show{opacity:1;pointer-events:auto}.to-top:hover{background:var(--green);color:#fff;transform:translateY(-2px)}.mobile-download{display:none}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(201,109,75,.45);outline-offset:3px}
@media(max-width:1024px){.desktop-nav{gap:0}.desktop-nav a{padding-left:9px;padding-right:9px}.hero-grid{gap:26px}.entry-grid{grid-template-columns:1fr 1fr}.entry-card:first-child{grid-row:auto;grid-column:span 2;min-height:245px}.guide-scroller{grid-template-columns:1fr 1fr}.guide-card.large{grid-column:span 2}.footer-top{grid-template-columns:1.4fr 1fr 1fr}.footer-group:last-child{grid-column:2}.contact-grid{gap:27px}}
@media(max-width:768px){.container{width:min(calc(100% - 32px),var(--container))}.nav-wrap{height:67px}.desktop-nav,.nav-download{display:none}.menu-toggle{display:grid;place-items:center}.mobile-panel{position:fixed;top:67px;right:0;width:min(320px,88vw);height:calc(100vh - 67px);padding:18px;background:#fff;border-left:1px solid var(--line);box-shadow:-10px 0 30px rgba(23,57,49,.12);transform:translateX(105%);transition:.25s;z-index:99}.mobile-panel.open{display:block;transform:translateX(0)}.mobile-panel a{display:block;padding:13px 10px;border-bottom:1px solid var(--line);font-weight:700;color:#46514c}.mobile-panel a.active{color:var(--green)}.mobile-panel .btn-primary{margin-top:18px;width:100%}.hero{padding-top:48px;background:var(--sand)}.hero-grid{grid-template-columns:1fr}.hero h1{font-size:34px}.phone-stage{height:285px;order:-1}.phone{transform:scale(.76);margin-top:-34px;margin-bottom:-30px}.hero-metrics{margin-top:31px}.metric{padding:14px 12px}.metric b{font-size:15px}.metric span{font-size:12px}.section{padding:58px 0}.section-head{align-items:start;flex-direction:column;margin-bottom:25px;gap:11px}.section-head h2{font-size:26px}.entry-grid,.news-layout,.download-panel,.security,.dual-columns,.contact-grid{grid-template-columns:1fr}.entry-card:first-child{grid-column:auto}.news-timeline{padding:5px 18px}.download-visual{min-height:290px}.download-info{padding:26px}.steps{grid-template-columns:1fr;gap:22px}.steps:before{left:28px;top:28px;bottom:28px;width:1px;height:auto;right:auto}.step{padding:0 0 0 77px;min-height:58px}.step-number{position:absolute;left:0;top:0}.update-layout{grid-template-columns:1fr;gap:17px}.log-item{grid-template-columns:88px 1fr;gap:14px}.guide-scroller{display:flex;overflow-x:auto;padding-bottom:8px}.guide-card,.guide-card.large{min-width:255px;min-height:220px}.security{gap:25px}.activity-track{grid-template-columns:1fr}.activity,.activity:not(:first-child){padding:19px 0 19px 24px;border-right:0;border-bottom:1px solid var(--line);min-height:0}.activity:before{left:-5px;top:25px}.form-row{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-group:last-child{grid-column:auto}.mobile-download{display:inline-flex;position:fixed;bottom:18px;left:16px;z-index:39;background:var(--orange);color:#fff;border-radius:8px;padding:10px 14px;font-size:13px;font-weight:750;box-shadow:var(--shadow-sm)}.to-top{right:16px;bottom:18px}}
@media(max-width:520px){.hero-actions{display:grid;grid-template-columns:1fr}.hero-actions a{width:100%}.hero-metrics{grid-template-columns:1fr}.section-head h2{font-size:24px}.entry-card{min-height:160px}.announcement{grid-template-columns:62px 1fr;gap:12px}.announcement .status{grid-column:2}.date-box{width:54px;height:54px}.download-bottom{align-items:flex-start}.feature-body h3{font-size:20px}.news-item{grid-template-columns:62px 1fr;gap:10px}.faq-answer{padding-left:41px}.faq-contact .btn-secondary{display:flex;margin:13px auto 0;width:max-content}.footer-top{grid-template-columns:1fr}.contact-grid{padding:28px 18px}.feedback-form{padding:18px}.footer-bottom{display:block}.footer-bottom span{display:block;margin:4px 0}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}

/* roulang page: article */
:root{
  --green:#176B5C;--green-dark:#105446;--green-soft:#EAF1EC;--orange:#C96D4B;
  --ink:#202A27;--muted:#6A716C;--line:#DCE2DB;--sand:#F6F4EE;--white:#fff;
  --deep:#173B34;--radius:16px;--radius-sm:10px;--shadow:0 14px 34px rgba(23,57,49,.08);
  --shadow-sm:0 8px 20px rgba(23,57,49,.06);--container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--sand);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none}
a,button,input,textarea{transition:background-color .22s,border-color .22s,color .22s,box-shadow .22s,transform .22s}
button,input,textarea{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
:focus-visible{outline:3px solid rgba(201,109,75,.48);outline-offset:3px}
.container{width:min(calc(100% - 48px),var(--container));margin:auto}
.site-header{position:sticky;top:0;z-index:100;background:rgba(246,244,238,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,226,219,.9)}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;font-weight:750;font-size:17px;letter-spacing:.01em}
.seal{display:inline-flex;align-items:center;justify-content:center;width:31px;height:31px;border:1.5px solid currentColor;border-radius:8px;color:var(--green);font-weight:800;font-size:16px;line-height:1}
.desktop-nav{display:flex;align-items:center;gap:5px;margin-left:auto}
.desktop-nav a{position:relative;padding:24px 13px 22px;color:#4c5752;font-size:14px;font-weight:600;white-space:nowrap}
.desktop-nav a:hover,.desktop-nav a.active{color:var(--green)}
.desktop-nav a.active:after{content:"";position:absolute;height:2px;left:13px;right:13px;bottom:15px;background:var(--green);border-radius:4px}
.nav-download,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:#fff;border:1px solid var(--green);border-radius:8px;padding:11px 17px;font-weight:700;font-size:14px}
.nav-download:hover,.btn-primary:hover{background:var(--green-dark);border-color:var(--green-dark);box-shadow:0 7px 18px rgba(16,84,70,.2);transform:translateY(-1px)}
.btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid #aeb9b2;background:#fff;color:var(--ink);padding:11px 17px;border-radius:8px;font-size:14px;font-weight:700}
.btn-secondary:hover{border-color:var(--green);color:var(--green);background:var(--green-soft)}
.menu-toggle{display:none;background:none;border:0;width:44px;height:44px;color:var(--green)}
.menu-toggle svg{width:25px;height:25px}
.mobile-panel{display:none}
main{overflow:hidden}
.article-shell{padding:28px 0 94px}
.breadcrumb-area{padding:21px 0;border-bottom:1px solid var(--line)}
.breadcrumb{display:flex;align-items:center;gap:10px;margin:0;padding:0;list-style:none;color:var(--muted);font-size:13px;white-space:nowrap;overflow:hidden}
.breadcrumb a:hover{color:var(--green)}
.breadcrumb .crumb-sep{color:#aab1ac}
.breadcrumb .current{color:var(--ink);overflow:hidden;text-overflow:ellipsis}
.article-head{max-width:880px;padding:66px 0 43px}
.category-tag{display:inline-flex;align-items:center;gap:7px;background:var(--green-soft);color:var(--green);border-radius:20px;padding:4px 11px;font-size:13px;font-weight:800}
.category-tag:before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
.article-head h1{margin:17px 0 22px;font-size:42px;line-height:1.3;letter-spacing:-.045em;font-weight:750}
.article-meta{display:flex;flex-wrap:wrap;gap:10px 22px;color:var(--muted);font-size:14px}
.article-meta span{display:inline-flex;align-items:center;gap:7px}
.article-meta svg{width:16px;height:16px;stroke:var(--green)}
.article-layout{display:grid;grid-template-columns:minmax(0,790px) 260px;justify-content:space-between;gap:72px;align-items:start}
.article-main{min-width:0}
.summary-box{position:relative;padding:28px 30px 27px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:37px;overflow:hidden}
.summary-box:before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--orange)}
.summary-box h2{display:flex;align-items:center;gap:8px;margin:0 0 12px;font-size:17px}
.summary-box h2 svg{width:20px;height:20px;stroke:var(--green)}
.summary-box p{margin:0;color:#4f5954;font-size:16px;line-height:1.9}
.article-content{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:48px 52px;box-shadow:var(--shadow-sm)}
.article-content>*:first-child{margin-top:0}
.article-content>*:last-child{margin-bottom:0}
.article-content h2{font-size:27px;line-height:1.45;letter-spacing:-.025em;margin:48px 0 19px;color:var(--ink)}
.article-content h3{font-size:20px;line-height:1.5;margin:34px 0 14px;color:var(--ink)}
.article-content p{margin:0 0 22px;color:#39433e;font-size:16.5px;line-height:1.95}
.article-content ul,.article-content ol{margin:0 0 24px;padding-left:1.45em;color:#39433e}
.article-content li{padding-left:4px;margin:8px 0;line-height:1.85}
.article-content blockquote{margin:30px 0;padding:18px 23px;border-left:4px solid var(--green);background:var(--green-soft);color:#40534b;font-size:16px;line-height:1.85}
.article-content img{width:auto;max-width:100%;height:auto;margin:30px auto;border-radius:12px;background:var(--green-soft)}
.article-content figure{margin:30px 0}
.article-content figcaption{margin-top:9px;text-align:center;color:var(--muted);font-size:13px}
.article-content table{width:100%;margin:28px 0;border-collapse:collapse;border:1px solid var(--line);font-size:14px}
.article-content th,.article-content td{padding:12px 14px;border:1px solid var(--line);text-align:left;vertical-align:top}
.article-content th{background:var(--green-soft);color:var(--green);font-weight:750}
.article-content a{color:var(--green);font-weight:650;text-decoration:underline;text-decoration-color:#9ab9af;text-underline-offset:3px}
.article-content a:hover{color:var(--green-dark)}
.empty-content{text-align:center;padding:76px 26px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.empty-content svg{width:42px;height:42px;stroke:var(--green);margin:0 auto 14px}
.empty-content h2{font-size:22px;margin:0 0 8px}
.empty-content p{color:var(--muted);margin:0 0 22px}
.article-aside{position:sticky;top:104px}
.aside-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;margin-bottom:16px}
.aside-card h2{font-size:16px;margin:0 0 14px;line-height:1.45}
.aside-card p{font-size:14px;color:var(--muted);line-height:1.75;margin:0}
.article-index{margin:0;padding:0;list-style:none}
.article-index li{border-top:1px solid var(--line)}
.article-index li:first-child{border-top:0}
.article-index a{display:block;padding:10px 0;color:#4d5752;font-size:14px;line-height:1.5}
.article-index a:hover{color:var(--green);padding-left:4px}
.download-tip{display:flex;gap:16px;align-items:center;padding:26px 28px;margin-top:31px;background:var(--deep);color:#fff;border-radius:var(--radius)}
.download-icon{width:44px;height:44px;flex:0 0 44px;display:grid;place-items:center;border:1px solid rgba(255,255,255,.35);border-radius:12px}
.download-icon svg{width:24px;height:24px}
.download-tip h2{font-size:18px;margin:0 0 3px}
.download-tip p{margin:0;color:#c7d7d1;font-size:14px;line-height:1.65}
.download-tip .btn-primary{margin-left:auto;flex-shrink:0;background:var(--orange);border-color:var(--orange)}
.download-tip .btn-primary:hover{background:#ad5838;border-color:#ad5838}
.related-section{padding-top:68px}
.section-heading{display:flex;justify-content:space-between;align-items:end;gap:18px;margin-bottom:24px}
.eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:20px;height:2px;background:var(--orange)}
.section-heading h2{margin:7px 0 0;font-size:28px;letter-spacing:-.03em}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related-card{display:flex;flex-direction:column;min-height:220px;padding:23px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.related-card:hover{transform:translateY(-3px);border-color:#91b4a9;box-shadow:var(--shadow-sm)}
.card-meta{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:12px}
.tag{display:inline-flex;padding:3px 8px;border-radius:16px;background:var(--green-soft);color:var(--green);font-size:12px;font-weight:750}
.related-card h3{font-size:18px;line-height:1.5;margin:15px 0 12px}
.related-card h3 a:hover{color:var(--green)}
.related-card p{margin:auto 0 0;color:var(--green);font-size:14px;font-weight:750}
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding-top:35px;margin-top:38px;border-top:1px solid var(--line)}
.article-nav a,.article-nav .nav-placeholder{min-height:105px;padding:19px 21px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
.article-nav a:hover{border-color:#91b4a9;box-shadow:var(--shadow-sm)}
.article-nav .next{text-align:right}
.article-nav small{display:block;margin-bottom:6px;color:var(--muted);font-size:13px}
.article-nav strong{display:block;font-size:15px;line-height:1.55}
.article-nav .nav-placeholder{color:#9ba29d}
.feedback{display:flex;align-items:center;justify-content:space-between;gap:28px;margin-top:54px;padding:29px 31px;background:var(--green-soft);border:1px solid #d5e2d9;border-radius:var(--radius)}
.feedback h2{font-size:20px;margin:0 0 5px}
.feedback p{margin:0;color:var(--muted);font-size:14px}
.feedback-actions{display:flex;gap:10px;flex-wrap:wrap}
.feedback-button{border:1px solid #a9c0b4;border-radius:8px;background:#fff;color:var(--green);padding:9px 15px;font-size:14px;font-weight:750}
.feedback-button:hover,.feedback-button.active{background:var(--green);color:#fff;border-color:var(--green)}
.return-row{padding-top:25px;text-align:center}
.text-link{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:14px;font-weight:750}
.text-link:hover{color:var(--green-dark);text-decoration:underline}
.site-footer{background:var(--deep);color:#fff;padding:62px 0 20px}
.footer-top{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:38px;padding-bottom:42px;border-bottom:1px solid rgba(220,226,219,.18)}
.footer-brand .brand{color:#fff;margin-bottom:14px}
.footer-brand .seal{color:#fff}
.footer-brand p{max-width:275px;margin:0;color:#bfcec8;font-size:14px;line-height:1.75}
.footer-group h3{font-size:14px;margin:3px 0 14px;color:#fff}
.footer-group a{display:block;margin:7px 0;color:#bfcec8;font-size:14px}
.footer-group a:hover{color:#fff;text-decoration:underline}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;padding-top:18px;color:#9eb4ab;font-size:13px}
.back-top{position:fixed;right:22px;bottom:22px;z-index:30;width:44px;height:44px;display:grid;place-items:center;border:1px solid #aabfb5;background:#fff;color:var(--green);border-radius:50%;box-shadow:var(--shadow-sm);opacity:0;visibility:hidden;transform:translateY(8px)}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--green);color:#fff}
@media(max-width:1024px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:34px}
  .article-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:16px}
  .aside-card{margin:0}
  .article-head{padding-top:50px}
  .footer-top{grid-template-columns:1.4fr repeat(3,1fr);gap:24px}
}
@media(max-width:768px){
  .container{width:min(calc(100% - 32px),var(--container))}
  .nav-wrap{height:68px;gap:12px}
  .brand{font-size:15px;max-width:265px}
  .seal{width:29px;height:29px}
  .desktop-nav,.nav-download{display:none}
  .menu-toggle{display:inline-grid;place-items:center}
  .mobile-panel{position:fixed;z-index:99;top:68px;right:0;width:min(330px,90vw);height:calc(100vh - 68px);padding:24px;background:#fff;border-left:1px solid var(--line);box-shadow:-14px 0 34px rgba(23,57,49,.12);transform:translateX(105%);transition:transform .25s;display:block}
  .mobile-panel.open{transform:translateX(0)}
  .mobile-panel a{display:block;padding:14px 6px;border-bottom:1px solid var(--line);font-size:16px;font-weight:700}
  .mobile-panel a.active{color:var(--green)}
  .mobile-download{display:flex!important;margin-top:22px;justify-content:center;background:var(--green);color:#fff!important;border-radius:8px}
  .article-shell{padding-bottom:58px}
  .article-head{padding:42px 0 31px}
  .article-head h1{font-size:32px;line-height:1.38;margin:14px 0 18px}
  .article-meta{gap:8px 15px;font-size:13px}
  .summary-box{padding:23px 23px 22px;margin-bottom:24px}
  .article-content{padding:30px 24px}
  .article-content h2{font-size:24px;margin-top:38px}
  .article-content h3{font-size:19px}
  .article-content p{font-size:16px}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap}
  .article-aside{grid-template-columns:1fr}
  .related-section{padding-top:49px}
  .section-heading h2{font-size:25px}
  .related-grid{grid-template-columns:1fr}
  .download-tip{align-items:flex-start;flex-wrap:wrap;padding:23px}
  .download-tip .btn-primary{margin-left:60px}
  .feedback{display:block;padding:25px}
  .feedback-actions{margin-top:18px}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px}
  .footer-brand{grid-column:1/-1}
}
@media(max-width:520px){
  body{font-size:15px}
  .container{width:min(calc(100% - 28px),var(--container))}
  .brand{font-size:14px}
  .breadcrumb{font-size:12px}
  .breadcrumb li:nth-child(2){display:none}
  .article-head h1{font-size:30px}
  .article-content{padding:26px 19px;border-radius:12px}
  .article-content p{line-height:1.9}
  .article-content blockquote{padding:16px}
  .download-tip .btn-primary{margin-left:0;width:100%}
  .article-nav{grid-template-columns:1fr}
  .article-nav .next{text-align:left}
  .footer-top{grid-template-columns:1fr}
  .footer-brand{grid-column:auto}
  .footer-bottom{display:block}
  .footer-bottom span{display:block;margin:5px 0}
  .back-top{right:14px;bottom:14px}
}
@media(prefers-reduced-motion:reduce){
  *,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}

/* roulang page: category1 */
:root{
      --green:#176B5C;--green-dark:#105446;--green-soft:#EAF1EC;--orange:#C96D4B;
      --ink:#202A27;--muted:#6A716C;--line:#DCE2DB;--sand:#F6F4EE;--white:#fff;
      --deep:#173B34;--radius:16px;--radius-sm:10px;--shadow:0 14px 34px rgba(23,57,49,.08);
      --shadow-sm:0 8px 20px rgba(23,57,49,.06);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--sand);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    button,input{font:inherit}
    button{cursor:pointer}
    img{max-width:100%;display:block}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{position:sticky;top:0;z-index:100;background:rgba(246,244,238,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,226,219,.9)}
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;flex-shrink:0;font-weight:750;font-size:17px;letter-spacing:.01em}
    .seal{display:grid;place-items:center;width:31px;height:31px;border:1px solid currentColor;border-radius:8px;background:var(--green);color:#fff;font-size:16px;line-height:1}
    .desktop-nav{display:flex;align-items:center;gap:5px;margin-left:auto}
    .desktop-nav a{position:relative;padding:24px 13px 22px;color:#4c5752;font-size:14px;font-weight:600;transition:.2s}
    .desktop-nav a:hover,.desktop-nav a.active{color:var(--green)}
    .desktop-nav a.active:after{content:"";position:absolute;height:2px;left:13px;right:13px;bottom:15px;background:var(--green);border-radius:4px}
    .nav-download,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:#fff;border:1px solid var(--green);border-radius:8px;padding:11px 17px;font-weight:700;font-size:14px;transition:.22s}
    .nav-download:hover,.btn-primary:hover{background:var(--green-dark);border-color:var(--green-dark);box-shadow:0 7px 18px rgba(16,84,70,.2);transform:translateY(-1px)}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;border:1px solid #AEBAB2;background:transparent;color:var(--ink);padding:11px 17px;border-radius:8px;font-size:14px;font-weight:700;transition:.22s}
    .btn-secondary:hover{border-color:var(--green);color:var(--green);background:#fff}
    .menu-toggle{display:none;background:none;border:0;width:44px;height:44px;color:var(--green)}
    .menu-toggle svg{width:25px;height:25px}
    .mobile-panel{display:none}
    main{overflow:hidden}
    .section{padding:88px 0}
    .section-soft{background:var(--green-soft)}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:20px;height:2px;background:var(--orange)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:34px}
    .section-head h2{margin:8px 0 0;font-size:30px;line-height:1.35;letter-spacing:-.03em}
    .section-head p{max-width:480px;margin:0;color:var(--muted);font-size:15px}
    .text-link{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-weight:750;font-size:14px;white-space:nowrap}
    .text-link:hover{color:var(--green-dark);text-decoration:underline}
    .tag{display:inline-flex;align-items:center;padding:3px 9px;border-radius:20px;background:var(--green-soft);color:var(--green);font-size:12px;font-weight:750}
    .tag.orange{background:#F8E8E1;color:#A95537}
    .breadcrumb-wrap{padding:26px 0 0}
    .breadcrumb{margin:0;padding:0;background:transparent;font-size:14px;color:var(--muted)}
    .breadcrumb-item+.breadcrumb-item:before{color:#9da7a0}
    .breadcrumb-item.active{color:var(--ink)}
    .page-heading{padding:42px 0 66px;position:relative}
    .page-heading:after{content:"";position:absolute;right:7%;top:26px;width:180px;height:180px;border-radius:50%;border:1px solid rgba(23,107,92,.18);background:repeating-radial-gradient(circle,transparent 0,transparent 23px,rgba(23,107,92,.06) 24px,transparent 25px)}
    .page-heading-inner{position:relative;z-index:1;max-width:820px}
    .page-heading h1{font-size:44px;line-height:1.25;letter-spacing:-.05em;margin:13px 0 16px}
    .page-heading p{max-width:700px;color:var(--muted);font-size:17px;margin:0}
    .update-line{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin-top:23px;font-size:14px;color:var(--muted)}
    .update-line span{display:inline-flex;align-items:center;gap:7px}
    .update-dot{width:7px;height:7px;border-radius:50%;background:var(--orange)}
    .channel-grid{display:grid;grid-template-columns:1.35fr repeat(3,1fr);gap:14px}
    .channel-card{min-height:155px;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);transition:.22s;position:relative;overflow:hidden}
    .channel-card:first-child{background:var(--deep);color:#fff}
    .channel-card:hover{transform:translateY(-3px);border-color:#91B4A9;box-shadow:var(--shadow-sm)}
    .channel-card .channel-no{display:block;color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.1em}
    .channel-card h3{font-size:18px;margin:28px 0 7px;line-height:1.4}
    .channel-card p{font-size:13px;line-height:1.65;margin:0;color:var(--muted)}
    .channel-card:first-child p{color:#c5d5cf}
    .channel-card .arrow{position:absolute;right:20px;bottom:15px;font-size:20px;color:var(--green)}
    .channel-card:first-child .arrow{color:#fff}
    .top-news{display:grid;grid-template-columns:1.1fr .9fr;gap:22px}
    .featured-story{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.22s}
    .featured-story:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .story-cover{height:265px;background:linear-gradient(135deg,#174B40,#2F8371);position:relative;overflow:hidden}
    .story-cover:before{content:"";position:absolute;width:220px;height:220px;border:1px solid rgba(255,255,255,.35);border-radius:50%;right:8%;top:24px}
    .story-cover:after{content:"";position:absolute;left:11%;bottom:24px;width:52%;height:54px;border-top:1px solid rgba(255,255,255,.45);border-bottom:1px solid rgba(255,255,255,.25);transform:skewY(-11deg)}
    .story-cover span{position:absolute;left:28px;top:28px;color:#fff;font-size:14px;font-weight:700;letter-spacing:.08em}
    .story-body{padding:26px}
    .meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;color:var(--muted);font-size:13px}
    .story-body h3{font-size:25px;line-height:1.42;margin:14px 0 10px;letter-spacing:-.02em}
    .story-body p{margin:0;color:var(--muted);font-size:15px}
    .brief-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:8px 24px}
    .brief-item{display:grid;grid-template-columns:68px 1fr;gap:15px;padding:20px 0;border-bottom:1px solid var(--line)}
    .brief-item:last-child{border-bottom:0}
    .brief-date{font-size:13px;color:var(--green);font-weight:800;line-height:1.45}
    .brief-date small{display:block;color:var(--muted);font-weight:600}
    .brief-item h3{font-size:16px;line-height:1.5;margin:0 0 5px}
    .brief-item h3 a:hover{color:var(--green)}
    .brief-item p{font-size:13px;color:var(--muted);line-height:1.65;margin:0}
    .filters{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:22px}
    .filter{border:1px solid var(--line);padding:7px 13px;border-radius:20px;background:#fff;font-size:13px;color:var(--muted)}
    .filter.active{background:var(--green);border-color:var(--green);color:#fff}
    .news-list{border-top:1px solid var(--line)}
    .news-row{display:grid;grid-template-columns:118px 1fr 32px;gap:30px;align-items:center;padding:25px 4px;border-bottom:1px solid var(--line);transition:.2s}
    .news-row:hover{padding-left:12px;background:rgba(255,255,255,.55)}
    .news-date{font-size:14px;color:var(--green);font-weight:800}
    .news-date small{display:block;color:var(--muted);font-size:12px;font-weight:500}
    .news-content h3{font-size:19px;line-height:1.45;margin:0 0 6px}
    .news-content h3 a:hover{color:var(--green)}
    .news-content p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .row-arrow{font-size:24px;color:var(--green);text-align:right}
    .weekly-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .weekly-card{padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.22s}
    .weekly-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm);border-color:#9fbdb3}
    .weekly-card .week-no{font-size:13px;color:var(--orange);font-weight:800}
    .weekly-card h3{font-size:18px;line-height:1.45;margin:20px 0 8px}
    .weekly-card p{font-size:14px;color:var(--muted);margin:0 0 15px;line-height:1.7}
    .topic-stack{display:grid;gap:22px}
    .topic-row{display:grid;grid-template-columns:.82fr 1.18fr;min-height:235px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
    .topic-row:nth-child(even){grid-template-columns:1.18fr .82fr}
    .topic-art{background:#dbeae2;position:relative;min-height:220px}
    .topic-row:nth-child(2) .topic-art{background:#f4e4dc}
    .topic-row:nth-child(3) .topic-art{background:#e4ece8}
    .topic-art:before{content:"";position:absolute;width:56%;height:56%;border:1px solid rgba(23,107,92,.3);border-radius:50%;left:22%;top:20%}
    .topic-art:after{content:"";position:absolute;width:44%;height:1px;background:rgba(23,107,92,.35);left:28%;top:50%;box-shadow:0 24px 0 rgba(23,107,92,.25),0 -24px 0 rgba(23,107,92,.2)}
    .topic-copy{padding:35px 42px;display:flex;flex-direction:column;justify-content:center}
    .topic-copy h3{font-size:24px;line-height:1.4;margin:11px 0}
    .topic-copy p{margin:0 0 16px;color:var(--muted);font-size:15px}
    .subscribe-panel{display:grid;grid-template-columns:1fr auto;gap:35px;align-items:center;background:var(--deep);color:#fff;border-radius:var(--radius);padding:42px 48px;position:relative;overflow:hidden}
    .subscribe-panel:after{content:"";position:absolute;width:270px;height:270px;border-radius:50%;border:1px solid rgba(255,255,255,.2);right:-88px;top:-105px}
    .subscribe-panel h2{font-size:28px;margin:0 0 8px;line-height:1.4}
    .subscribe-panel p{margin:0;color:#c7d9d2;font-size:15px}
    .subscribe-form{position:relative;z-index:1;display:flex;gap:10px}
    .subscribe-form input{width:280px;height:48px;border:1px solid transparent;border-radius:8px;padding:0 14px;color:var(--ink);outline:0}
    .subscribe-form input:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(201,109,75,.2)}
    .subscribe-form .btn-primary{background:var(--orange);border-color:var(--orange);white-space:nowrap}
    .subscribe-form .btn-primary:hover{background:#ad5738;border-color:#ad5738}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line);background:transparent}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:22px 0;background:none;border:0;color:var(--ink);text-align:left;font-size:17px;font-weight:750}
    .faq-question span:first-child{display:flex;gap:15px;align-items:center}
    .faq-index{display:grid;place-items:center;width:28px;height:28px;border-radius:7px;background:var(--green-soft);color:var(--green);font-size:12px;flex:0 0 auto}
    .faq-symbol{color:var(--green);font-size:25px;font-weight:400;line-height:1}
    .faq-answer{display:none;padding:0 0 22px 43px;max-width:850px;color:var(--muted);font-size:15px}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-symbol{transform:rotate(45deg)}
    .site-footer{background:var(--deep);color:#fff;padding:58px 0 22px}
    .footer-top{display:grid;grid-template-columns:1.45fr repeat(3,1fr);gap:35px;padding-bottom:44px}
    .footer-brand .brand{margin-bottom:16px}
    .footer-brand .seal{background:transparent;border-color:#a9c8bc}
    .footer-brand p{margin:0;max-width:285px;color:#bed0c9;font-size:14px;line-height:1.75}
    .footer-group h3{font-size:14px;margin:4px 0 13px;color:#fff}
    .footer-group a{display:block;color:#bed0c9;font-size:14px;margin:6px 0;transition:.2s}
    .footer-group a:hover{color:#fff;text-decoration:underline}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:19px;display:flex;justify-content:space-between;gap:18px;color:#a9c1b8;font-size:13px}
    .back-top{position:fixed;right:24px;bottom:24px;z-index:50;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--green);box-shadow:var(--shadow-sm);display:grid;place-items:center;opacity:0;visibility:hidden;transition:.2s}
    .back-top.show{opacity:1;visibility:visible}
    .back-top:hover{background:var(--green);color:#fff;transform:translateY(-2px)}
    :focus-visible{outline:3px solid rgba(201,109,75,.55);outline-offset:3px}
    @media(max-width:992px){
      .desktop-nav{display:none}.nav-download{margin-left:auto}.menu-toggle{display:block}
      .mobile-panel{position:fixed;z-index:90;top:76px;right:0;width:min(360px,90vw);height:calc(100vh - 76px);padding:28px;background:#fff;border-left:1px solid var(--line);box-shadow:var(--shadow);transform:translateX(105%);transition:.25s}
      .mobile-panel.open{display:block;transform:translateX(0)}
      .mobile-panel a{display:block;padding:14px 0;border-bottom:1px solid var(--line);font-weight:700}
      .channel-grid{grid-template-columns:repeat(2,1fr)}.channel-card:first-child{grid-column:span 2}
      .footer-top{grid-template-columns:1.3fr 1fr 1fr}.footer-group:last-child{grid-column:2}
      .top-news{grid-template-columns:1fr}.weekly-grid{grid-template-columns:1fr 1fr}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}.section{padding:58px 0}
      .page-heading{padding:30px 0 48px}.page-heading h1{font-size:33px}.page-heading:after{opacity:.55;right:-55px}
      .section-head{display:block;margin-bottom:25px}.section-head p{margin-top:11px}
      .channel-grid,.weekly-grid{grid-template-columns:1fr}.channel-card:first-child{grid-column:auto}
      .news-row{grid-template-columns:76px 1fr 20px;gap:13px;padding:20px 0}.news-content h3{font-size:16px}.news-content p{font-size:13px}
      .topic-row,.topic-row:nth-child(even){grid-template-columns:1fr}.topic-art{min-height:165px}.topic-copy{padding:28px}.topic-copy h3{font-size:22px}
      .subscribe-panel{grid-template-columns:1fr;padding:32px 25px;gap:22px}.subscribe-form input{width:100%}.subscribe-form{max-width:470px}
      .footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:span 2}.footer-group:last-child{grid-column:auto}
    }
    @media(max-width:520px){
      body{font-size:15px}.nav-wrap{height:68px;gap:10px}.brand{font-size:14px;max-width:235px}.seal{width:28px;height:28px}.nav-download{display:none}
      .mobile-panel{top:68px;height:calc(100vh - 68px)}.page-heading h1{font-size:31px}.page-heading p{font-size:15px}
      .story-cover{height:205px}.story-body{padding:21px}.story-body h3{font-size:21px}.brief-list{padding:6px 17px}.brief-item{grid-template-columns:58px 1fr;gap:10px}
      .news-row{grid-template-columns:1fr 20px}.news-date{grid-column:span 2;display:flex;gap:8px;align-items:center}.news-date small{display:inline}.news-content{grid-column:1}.row-arrow{grid-column:2;grid-row:2}
      .subscribe-form{display:block}.subscribe-form input{margin-bottom:10px}.subscribe-form .btn-primary{width:100%}
      .footer-top{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin:4px 0}
      .back-top{right:16px;bottom:16px}
    }
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category3 */
:root{
      --green:#176B5C;--green-dark:#105446;--green-soft:#EAF1EC;--orange:#C96D4B;
      --ink:#202A27;--muted:#6A716C;--line:#DCE2DB;--sand:#F6F4EE;--white:#fff;
      --deep:#173B34;--radius:16px;--radius-sm:10px;--shadow:0 14px 34px rgba(23,57,49,.08);
      --shadow-sm:0 8px 20px rgba(23,57,49,.06);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--sand);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    img{display:block;max-width:100%}
    :focus-visible{outline:3px solid rgba(201,109,75,.48);outline-offset:3px}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{position:sticky;top:0;z-index:100;background:rgba(246,244,238,.94);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,226,219,.9)}
    .nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;flex-shrink:0;font-size:17px;font-weight:750;letter-spacing:.01em}
    .seal{width:34px;height:34px;display:inline-flex;align-items:center;justify-content:center;border:1px solid currentColor;border-radius:9px;color:var(--green);font-size:18px;font-weight:800;line-height:1}
    .desktop-nav{display:flex;align-items:center;gap:5px;margin-left:auto}
    .desktop-nav a{position:relative;padding:24px 13px 22px;color:#4c5752;font-size:14px;font-weight:600;transition:.2s}
    .desktop-nav a:hover,.desktop-nav a.active{color:var(--green)}
    .desktop-nav a.active:after{content:"";position:absolute;right:13px;bottom:15px;left:13px;height:2px;border-radius:4px;background:var(--green)}
    .nav-download,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--green);border-radius:8px;background:var(--green);color:#fff;padding:11px 17px;font-size:14px;font-weight:700;transition:.22s}
    .nav-download:hover,.btn-primary:hover{transform:translateY(-1px);border-color:var(--green-dark);background:var(--green-dark);box-shadow:0 7px 18px rgba(16,84,70,.2)}
    .btn-secondary{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid #aebab2;border-radius:8px;background:transparent;color:var(--ink);padding:11px 17px;font-size:14px;font-weight:700;transition:.22s}
    .btn-secondary:hover{border-color:var(--green);background:#fff;color:var(--green)}
    .menu-toggle{display:none;width:44px;height:44px;border:0;background:none;color:var(--green)}
    .menu-toggle svg{width:25px;height:25px}
    .mobile-panel{display:none}
    main{overflow:hidden}
    .section{padding:86px 0}
    .section-soft{background:var(--green-soft)}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{width:20px;height:2px;background:var(--orange);content:""}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:34px}
    .section-head h2{margin:8px 0 0;font-size:30px;line-height:1.35;letter-spacing:-.03em}
    .section-head p{max-width:490px;margin:0;color:var(--muted);font-size:15px}
    .text-link{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:14px;font-weight:750}
    .text-link:hover{color:var(--green-dark);text-decoration:underline}
    .arrow{font-size:19px;line-height:1}
    .breadcrumb-band{padding:24px 0 0}
    .breadcrumb{display:flex;align-items:center;gap:9px;margin:0;padding:0;background:none;color:var(--muted);font-size:13px}
    .breadcrumb a:hover{color:var(--green)}
    .breadcrumb .divider{color:#a1aaa4}
    .breadcrumb .current{color:var(--ink);font-weight:650}
    .page-heading{padding:42px 0 68px;position:relative}
    .page-heading-grid{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:48px;align-items:end}
    .page-heading h1{margin:13px 0 15px;font-size:45px;line-height:1.22;letter-spacing:-.05em}
    .page-heading p{max-width:720px;margin:0;color:var(--muted);font-size:17px}
    .service-status{border:1px solid var(--line);border-radius:var(--radius);background:var(--white);padding:21px 22px;box-shadow:var(--shadow-sm)}
    .status-title{display:flex;align-items:center;gap:8px;margin-bottom:13px;color:var(--green);font-size:14px;font-weight:800}
    .status-dot{width:9px;height:9px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 4px #f9e7e0}
    .status-row{display:flex;justify-content:space-between;gap:16px;padding:8px 0;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
    .status-row strong{color:var(--ink);font-weight:700;text-align:right}
    .channel-grid{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
    .channel-card{min-height:225px;padding:27px 24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white);transition:.22s}
    .channel-card:hover{position:relative;z-index:1;transform:translateY(-3px);border-color:#92b4aa;box-shadow:var(--shadow-sm)}
    .channel-num{color:var(--orange);font-size:12px;font-weight:800;letter-spacing:.1em}
    .channel-icon{display:flex;align-items:center;justify-content:center;width:43px;height:43px;margin:23px 0 17px;border:1px solid #9ab8ae;border-radius:11px;color:var(--green)}
    .channel-icon svg{width:23px;height:23px}
    .channel-card h3{margin:0 0 7px;font-size:19px;line-height:1.4}
    .channel-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .support-list{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .support-item{display:flex;gap:18px;align-items:flex-start;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:.22s}
    .support-item:hover{transform:translateY(-3px);border-color:#91b4a9;box-shadow:var(--shadow-sm)}
    .support-item .round-icon{display:flex;flex:0 0 46px;align-items:center;justify-content:center;width:46px;height:46px;border-radius:50%;background:var(--green-soft);color:var(--green)}
    .round-icon svg{width:23px;height:23px}
    .support-item h3{margin:0 0 5px;font-size:18px;line-height:1.45}
    .support-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.72}
    .guide-layout{display:grid;grid-template-columns:1.12fr .88fr;gap:18px}
    .guide-main{min-height:366px;display:flex;flex-direction:column;justify-content:end;border:1px solid #285d53;border-radius:var(--radius);background:var(--deep);color:#fff;padding:36px;overflow:hidden;position:relative}
    .guide-main:after{position:absolute;right:-70px;top:-55px;width:300px;height:300px;border:1px solid rgba(255,255,255,.16);border-radius:50%;content:""}
    .guide-main > *{position:relative;z-index:1}
    .guide-main .tag{width:max-content;background:rgba(255,255,255,.13);color:#d4e5df}
    .guide-main h3{max-width:500px;margin:17px 0 10px;font-size:30px;line-height:1.34}
    .guide-main p{max-width:510px;margin:0 0 20px;color:#c5d5cf;font-size:15px}
    .guide-side{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .guide-card{display:flex;min-height:174px;flex-direction:column;justify-content:space-between;padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;transition:.22s}
    .guide-card:hover{transform:translateY(-3px);border-color:#91b4a9;box-shadow:var(--shadow-sm)}
    .guide-card .guide-no{color:var(--orange);font-weight:800;font-size:13px}
    .guide-card h3{margin:18px 0 6px;font-size:18px;line-height:1.4}
    .guide-card p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
    .security-panel{display:grid;grid-template-columns:.82fr 1.18fr;gap:55px;align-items:center;padding:46px;border:1px solid #d4e1d8;border-radius:var(--radius);background:#f7faf6}
    .security-emblem{display:flex;align-items:center;gap:19px}
    .shield{display:flex;align-items:center;justify-content:center;flex:0 0 82px;width:82px;height:92px;border:1px solid #82a99b;border-radius:42px 42px 30px 30px;color:var(--green)}
    .shield svg{width:38px;height:38px}
    .security-emblem h2{margin:0 0 8px;font-size:29px;line-height:1.35}
    .security-emblem p{margin:0;color:var(--muted);font-size:15px}
    .check-list{display:grid;grid-template-columns:1fr 1fr;gap:12px 18px;margin:0;padding:0;list-style:none}
    .check-list li{display:flex;gap:10px;align-items:flex-start;padding:12px 0;border-bottom:1px solid #d9e4dc;color:#3e4e48;font-size:14px}
    .check{display:inline-flex;flex:0 0 20px;align-items:center;justify-content:center;width:20px;height:20px;margin-top:3px;border:1px solid #78a393;border-radius:5px;color:var(--green);font-size:13px;font-weight:900}
    .contact-layout{display:grid;grid-template-columns:.78fr 1.22fr;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow-sm)}
    .contact-aside{padding:42px;background:var(--deep);color:#fff}
    .contact-aside .eyebrow{color:#d7e8e2}
    .contact-aside h2{margin:15px 0 15px;font-size:31px;line-height:1.34}
    .contact-aside p{margin:0;color:#c5d5cf;font-size:15px}
    .contact-meta{margin-top:30px;border-top:1px solid rgba(255,255,255,.18)}
    .contact-meta div{padding:14px 0;border-bottom:1px solid rgba(255,255,255,.18)}
    .contact-meta span{display:block;color:#a7c5ba;font-size:12px}
    .contact-meta strong{display:block;margin-top:2px;font-size:15px;font-weight:650}
    .contact-form{padding:38px 42px}
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .field{margin-bottom:17px}
    .field label{display:block;margin-bottom:7px;font-size:14px;font-weight:700}
    .field input,.field select,.field textarea{width:100%;border:1px solid #cdd7d0;border-radius:8px;background:#fff;color:var(--ink);padding:12px 14px;outline:none;transition:.2s}
    .field input,.field select{height:48px}
    .field textarea{min-height:118px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(23,107,92,.12)}
    .privacy{display:flex;gap:9px;align-items:flex-start;margin:3px 0 20px;color:var(--muted);font-size:13px;line-height:1.6}
    .privacy input{width:17px;height:17px;margin-top:3px;accent-color:var(--green)}
    .form-note{margin:13px 0 0;color:var(--muted);font-size:13px}
    .process-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff}
    .process-step{position:relative;min-height:235px;padding:30px;border-right:1px solid var(--line)}
    .process-step:last-child{border-right:0}
    .process-step:not(:last-child):after{position:absolute;right:-8px;top:47px;z-index:1;width:15px;height:15px;border-top:1px solid #9ab5aa;border-right:1px solid #9ab5aa;background:#fff;content:"";transform:rotate(45deg)}
    .process-num{display:flex;align-items:center;justify-content:center;width:43px;height:43px;border-radius:50%;background:var(--green-soft);color:var(--green);font-size:14px;font-weight:850}
    .process-step h3{margin:21px 0 8px;font-size:20px}
    .process-step p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .faq-wrap{max-width:890px;margin:auto}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{display:flex;align-items:center;width:100%;gap:15px;border:0;background:transparent;color:var(--ink);padding:21px 4px;text-align:left;font-size:17px;font-weight:750}
    .faq-number{display:inline-flex;align-items:center;justify-content:center;flex:0 0 28px;width:28px;height:28px;border-radius:7px;background:var(--green-soft);color:var(--green);font-size:12px}
    .faq-question svg{width:20px;height:20px;margin-left:auto;color:var(--green);transition:.22s}
    .faq-item.open .faq-question svg{transform:rotate(45deg)}
    .faq-answer{display:grid;grid-template-rows:0fr;transition:grid-template-rows .25s ease}
    .faq-answer>div{overflow:hidden}
    .faq-item.open .faq-answer{grid-template-rows:1fr}
    .faq-answer p{margin:0;padding:0 48px 22px;color:var(--muted);font-size:15px;line-height:1.85}
    .faq-bottom{display:flex;justify-content:center;margin-top:30px}
    .site-footer{padding:62px 0 22px;background:var(--deep);color:#fff}
    .footer-top{display:grid;grid-template-columns:1.55fr repeat(3,1fr);gap:34px;padding-bottom:42px}
    .footer-brand .brand{color:#fff}
    .footer-brand .seal{color:#fff;border-color:#93b7aa}
    .footer-brand p{max-width:300px;margin:17px 0 0;color:#bad0c7;font-size:14px;line-height:1.75}
    .footer-group h3{margin:1px 0 13px;color:#b8d0c6;font-size:13px;font-weight:800;letter-spacing:.06em}
    .footer-group a{display:block;width:max-content;max-width:100%;margin:7px 0;color:#fff;font-size:14px;transition:.2s}
    .footer-group a:hover{color:#b9dbd0;text-decoration:underline}
    .footer-bottom{display:flex;justify-content:space-between;gap:18px;border-top:1px solid rgba(255,255,255,.17);padding-top:19px;color:#abc3ba;font-size:13px}
    .back-top{position:fixed;right:22px;bottom:22px;z-index:20;display:flex;align-items:center;justify-content:center;width:45px;height:45px;border:1px solid #b8cec4;border-radius:50%;background:#fff;color:var(--green);box-shadow:var(--shadow-sm);opacity:0;pointer-events:none;transition:.2s}
    .back-top.show{opacity:1;pointer-events:auto}
    .back-top:hover{transform:translateY(-3px);background:var(--green);color:#fff}
    @media(max-width:1024px){
      .desktop-nav{gap:0}.desktop-nav a{padding-right:9px;padding-left:9px}.nav-wrap{gap:15px}
      .page-heading-grid,.security-panel{grid-template-columns:1fr;gap:28px}
      .channel-grid{grid-template-columns:1fr 1fr}.guide-layout{grid-template-columns:1fr}.guide-main{min-height:310px}
      .footer-top{grid-template-columns:1.4fr 1fr 1fr}
      .footer-group:last-child{grid-column:2}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .nav-wrap{height:68px}.desktop-nav,.nav-download{display:none}.menu-toggle{display:block;margin-left:auto}
      .mobile-panel{position:absolute;top:68px;right:0;left:0;border-bottom:1px solid var(--line);background:var(--sand);box-shadow:var(--shadow-sm)}
      .mobile-panel.open{display:block}.mobile-panel a{display:block;border-bottom:1px solid var(--line);padding:14px 24px;color:var(--ink);font-weight:700}.mobile-panel a.active{color:var(--green)}
      .section{padding:58px 0}.breadcrumb-band{padding-top:18px}.page-heading{padding:32px 0 48px}.page-heading h1{font-size:34px}
      .section-head{display:block;margin-bottom:25px}.section-head h2{font-size:27px}.section-head p{margin-top:10px}
      .channel-grid,.support-list,.check-list,.form-row,.process-grid{grid-template-columns:1fr}
      .channel-card{min-height:0}.guide-side{grid-template-columns:1fr 1fr}
      .security-panel{padding:30px}.security-emblem{align-items:flex-start}.security-emblem h2{font-size:26px}
      .contact-layout{grid-template-columns:1fr}.contact-aside,.contact-form{padding:31px 26px}
      .process-step{min-height:0;border-right:0;border-bottom:1px solid var(--line)}.process-step:last-child{border-bottom:0}.process-step:not(:last-child):after{right:auto;bottom:-8px;left:44px;top:auto;transform:rotate(135deg)}
      .footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}.footer-group:last-child{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin:4px 0}
    }
    @media(max-width:520px){
      body{font-size:15px}.brand{font-size:14px}.seal{width:31px;height:31px;font-size:16px}
      .page-heading h1{font-size:31px}.status-row{display:block}.status-row strong{text-align:left}
      .guide-side{grid-template-columns:1fr}.guide-main{min-height:290px;padding:27px}.guide-main h3{font-size:25px}
      .security-panel{padding:24px}.security-emblem{display:block}.shield{margin-bottom:16px}.check-list{gap:0}
      .faq-question{gap:10px;font-size:16px}.faq-answer p{padding-left:42px}.back-top{right:14px;bottom:15px}
      .footer-top{grid-template-columns:1fr}.footer-group:last-child{grid-column:auto}
    }
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* roulang page: category2 */
:root{
      --green:#176B5C;--green-dark:#105446;--green-soft:#EAF1EC;--orange:#C96D4B;
      --ink:#202A27;--muted:#6A716C;--line:#DCE2DB;--sand:#F6F4EE;--white:#fff;
      --deep:#173B34;--radius:16px;--radius-sm:10px;
      --shadow:0 14px 34px rgba(23,57,49,.08);--shadow-sm:0 8px 20px rgba(23,57,49,.06);
      --container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--sand);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none}
    a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(201,109,75,.38);outline-offset:3px}
    img{display:block;max-width:100%}
    button,input,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(calc(100% - 48px),var(--container));margin:auto}
    .site-header{position:sticky;top:0;z-index:50;background:rgba(246,244,238,.95);backdrop-filter:blur(12px);border-bottom:1px solid rgba(220,226,219,.9)}
    .nav-wrap{height:76px;display:flex;align-items:center;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;flex-shrink:0;font-weight:750;font-size:17px;letter-spacing:.01em}
    .seal{width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--green);border-radius:9px;color:var(--green);font-weight:800;line-height:1}
    .desktop-nav{display:flex;align-items:center;gap:5px;margin-left:auto}
    .desktop-nav a{position:relative;padding:24px 13px 22px;color:#4c5752;font-size:14px;font-weight:600;transition:.2s}
    .desktop-nav a:hover,.desktop-nav a.active{color:var(--green)}
    .desktop-nav a.active:after{content:"";position:absolute;height:2px;left:13px;right:13px;bottom:15px;background:var(--green);border-radius:4px}
    .nav-download,.btn-primary{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--green);color:#fff;border:1px solid var(--green);border-radius:8px;padding:11px 17px;font-weight:700;font-size:14px;transition:.22s}
    .nav-download:hover,.btn-primary:hover{background:var(--green-dark);border-color:var(--green-dark);box-shadow:0 7px 18px rgba(16,84,70,.2);transform:translateY(-1px)}
    .menu-toggle{display:none;background:none;border:0;width:44px;height:44px;color:var(--green)}
    .menu-toggle svg{width:25px;height:25px}
    .mobile-panel{display:none}
    main{overflow:hidden}
    .section{padding:84px 0}
    .section-soft{background:var(--green-soft)}
    .eyebrow{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:20px;height:2px;background:var(--orange)}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}
    .section-head h2{margin:8px 0 0;font-size:30px;line-height:1.35;letter-spacing:-.03em}
    .section-head p{max-width:500px;margin:0;color:var(--muted);font-size:15px}
    .text-link{display:inline-flex;align-items:center;gap:7px;color:var(--green);font-weight:750;font-size:14px}
    .text-link:hover{color:var(--green-dark);text-decoration:underline}
    .arrow{font-size:19px;line-height:1}
    .page-intro{padding:52px 0 48px;background:#fff;border-bottom:1px solid var(--line)}
    .crumbs{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:13px;margin-bottom:26px}
    .crumbs span:last-child{color:var(--ink)}
    .intro-layout{display:flex;align-items:end;justify-content:space-between;gap:40px}
    .page-intro h1{font-size:44px;line-height:1.25;letter-spacing:-.05em;margin:12px 0 14px}
    .page-intro h1 em{font-style:normal;color:var(--green)}
    .intro-copy{max-width:650px;color:var(--muted);font-size:17px;margin:0}
    .version-strip{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
    .pill{padding:7px 13px;border:1px solid var(--line);border-radius:30px;background:var(--sand);font-size:13px;color:var(--muted)}
    .pill.current{background:#f8e8e1;border-color:#ecc5b5;color:#a95537;font-weight:700}
    .download-panel{display:grid;grid-template-columns:1.15fr .85fr;gap:34px;background:var(--deep);color:#fff;border-radius:20px;padding:38px;box-shadow:var(--shadow)}
    .download-panel h2{font-size:31px;line-height:1.35;margin:13px 0 10px}
    .download-panel p{color:#c6d7d0;max-width:620px;margin:0 0 22px}
    .platform-row{display:flex;gap:10px;flex-wrap:wrap;margin:20px 0 27px}
    .platform{display:inline-flex;align-items:center;gap:8px;border:1px solid #6e9589;border-radius:8px;padding:8px 12px;font-size:13px}
    .platform strong{color:#fff}
    .platform.off{color:#b9c8c3;border-color:#58766e}
    .download-panel .btn-primary{background:var(--orange);border-color:var(--orange)}
    .download-panel .btn-primary:hover{background:#ad5739;border-color:#ad5739}
    .download-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;border-top:1px solid rgba(255,255,255,.18);padding-top:20px}
    .download-meta small{display:block;color:#a9c0b8;font-size:12px}
    .download-meta b{display:block;margin-top:4px;font-size:15px}
    .qr-area{display:flex;align-items:center;justify-content:center;min-height:260px;border:1px dashed #77988e;border-radius:14px;background:rgba(255,255,255,.04)}
    .qr-box{text-align:center;color:#d3e1dc}
    .qr-code{width:142px;height:142px;margin:0 auto 14px;background-color:#fff;background-image:linear-gradient(45deg,#173b34 25%,transparent 25%,transparent 75%,#173b34 75%),linear-gradient(45deg,#173b34 25%,transparent 25%,transparent 75%,#173b34 75%);background-size:22px 22px;background-position:0 0,11px 11px;border:10px solid #fff}
    .qr-box small{font-size:12px}
    .check-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
    .check-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;min-height:170px;transition:.22s}
    .check-card:hover{transform:translateY(-3px);border-color:#91b4a9;box-shadow:var(--shadow-sm)}
    .check-icon{width:38px;height:38px;border-radius:10px;background:var(--green-soft);color:var(--green);display:grid;place-items:center;font-weight:800;margin-bottom:18px}
    .check-card h3{font-size:17px;margin:0 0 7px}
    .check-card p{color:var(--muted);font-size:14px;line-height:1.7;margin:0}
    .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
    .step{position:relative;padding:28px 24px 10px 0;margin-right:24px}
    .step:not(:last-child):after{content:"→";position:absolute;right:-8px;top:27px;color:var(--orange);font-size:22px}
    .step-no{font-size:14px;color:var(--orange);font-weight:800;letter-spacing:.08em}
    .step h3{font-size:19px;margin:10px 0 7px}
    .step p{font-size:14px;color:var(--muted);margin:0;line-height:1.7}
    .timeline{border-left:2px solid #bfd2c8;margin-left:16px;padding-left:34px}
    .release{position:relative;display:grid;grid-template-columns:145px 1fr;gap:28px;padding:0 0 30px}
    .release:before{content:"";position:absolute;left:-42px;top:7px;width:14px;height:14px;border-radius:50%;background:var(--green);border:4px solid var(--green-soft)}
    .release.old:before{background:#9eb4aa}
    .release-label b{display:block;color:var(--green);font-size:18px}
    .release-label small{color:var(--muted);font-size:13px}
    .release-content{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:20px 23px}
    .release-content h3{font-size:18px;margin:0 0 8px}
    .release-content ul{margin:0;padding-left:20px;color:var(--muted);font-size:14px}
    .faq-list{max-width:850px;margin:auto}
    .faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);margin-bottom:10px;overflow:hidden}
    .faq-question{width:100%;display:flex;align-items:center;justify-content:space-between;text-align:left;background:#fff;border:0;padding:18px 21px;color:var(--ink);font-weight:700}
    .faq-question span:last-child{color:var(--green);font-size:22px;transition:.2s}
    .faq-answer{display:none;padding:0 21px 19px;color:var(--muted);font-size:14px;line-height:1.8}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-question span:last-child{transform:rotate(45deg)}
    .security-box{display:grid;grid-template-columns:.8fr 1.2fr;gap:36px;align-items:center;background:#fff;border:1px solid #cbded2;border-radius:18px;padding:34px}
    .security-box h2{font-size:27px;margin:10px 0}
    .security-box p{color:var(--muted);margin:0}
    .security-list{display:grid;grid-template-columns:1fr 1fr;gap:13px}
    .security-list div{display:flex;gap:11px;align-items:flex-start;padding:14px;background:var(--green-soft);border-radius:10px;font-size:14px}
    .security-list i{width:20px;height:20px;border:1px solid var(--green);border-radius:5px;flex-shrink:0;position:relative}
    .security-list i:after{content:"";position:absolute;width:8px;height:4px;border-left:2px solid var(--green);border-bottom:2px solid var(--green);transform:rotate(-45deg);left:5px;top:5px}
    .contact-card{display:grid;grid-template-columns:.8fr 1.2fr;gap:38px;background:#fff;border:1px solid var(--line);border-radius:18px;padding:34px}
    .contact-card h2{font-size:28px;margin:10px 0}
    .contact-card p{color:var(--muted);margin:0 0 18px}
    .contact-note{font-size:13px;color:var(--muted);border-left:3px solid var(--orange);padding-left:13px}
    .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:700}
    .field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:11px 13px;background:#fcfcfa;color:var(--ink);transition:.2s}
    .field input{height:48px}
    .field textarea{min-height:112px;resize:vertical}
    .field input:focus,.field textarea:focus{border-color:var(--green);background:#fff;outline:0;box-shadow:0 0 0 3px rgba(23,107,92,.1)}
    .form-bottom{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-top:15px}
    .privacy{font-size:12px;color:var(--muted)}
    .site-footer{background:var(--deep);color:#fff;padding:54px 0 22px}
    .footer-top{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:38px;padding-bottom:42px}
    .footer-brand p{color:#b9ccc5;font-size:14px;margin:17px 0 0;max-width:270px}
    .site-footer .brand{color:#fff}
    .site-footer .seal{color:#dcece5;border-color:#7fa69a}
    .footer-group{display:flex;flex-direction:column;gap:7px}
    .footer-group h3{font-size:15px;margin:0 0 8px;color:#fff}
    .footer-group a{color:#b9ccc5;font-size:13px;transition:.2s}
    .footer-group a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.16);padding-top:18px;color:#9fb7ae;font-size:12px}
    .back-top{position:fixed;right:22px;bottom:22px;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:#fff;color:var(--green);box-shadow:var(--shadow-sm);display:grid;place-items:center;font-size:20px;z-index:20}
    @media(max-width:992px){
      .desktop-nav{display:none}.nav-download{margin-left:auto}.menu-toggle{display:block}
      .mobile-panel{position:absolute;top:76px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);padding:12px 24px}
      .mobile-panel.show{display:flex;flex-direction:column}.mobile-panel a{padding:13px 0;border-bottom:1px solid var(--line);font-weight:650}
      .intro-layout,.download-panel,.security-box,.contact-card{grid-template-columns:1fr;display:grid}
      .version-strip{justify-content:flex-start}.check-grid{grid-template-columns:repeat(2,1fr)}
      .footer-top{grid-template-columns:1.4fr repeat(3,1fr);gap:20px}
    }
    @media(max-width:768px){
      .container{width:min(calc(100% - 32px),var(--container))}
      .section{padding:58px 0}.page-intro{padding:35px 0}.page-intro h1{font-size:34px}
      .section-head{display:block}.section-head p{margin-top:10px}.section-head .text-link{margin-top:15px}
      .download-panel{padding:25px}.download-panel h2{font-size:26px}.download-meta{grid-template-columns:1fr 1fr}
      .steps{display:block}.step{padding:21px 0 21px 35px;margin:0;border-left:1px solid var(--line)}
      .step:not(:last-child):after{content:"↓";left:15px;right:auto;top:auto;bottom:-14px;z-index:2}
      .release{grid-template-columns:1fr;gap:5px}.timeline{padding-left:25px}
      .security-list{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .nav-wrap{height:68px}.site-header .nav-download{font-size:12px;padding:9px 11px}.brand{font-size:14px;gap:7px}.seal{width:30px;height:30px}
      .mobile-panel{top:68px}.check-grid{grid-template-columns:1fr}.download-meta{grid-template-columns:1fr}
      .qr-area{min-height:210px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}
      .form-bottom{display:block}.form-bottom .btn-primary{width:100%;margin-top:15px}.footer-top{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
    }
    @media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}}