/* roulang page: index */
:root{
  --ink:#173c38;--ink-deep:#102a27;--accent:#4f9b84;--accent-soft:#dcece5;
  --terra:#c66d45;--paper:#f7f5f0;--white:#fffefa;--line:#d8e1dc;
  --muted:#667671;--text:#263633;--soft:#eef3ef;--danger:#b35e40;
  --radius:18px;--radius-sm:12px;--shadow:0 14px 35px rgba(16,42,39,.08);
  --shadow-hover:0 18px 42px rgba(16,42,39,.15);--container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease}
img{max-width:100%;display:block}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(79,155,132,.35);outline-offset:3px}
.container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:30;background:rgba(247,245,240,.94);border-bottom:1px solid rgba(216,225,220,.82);backdrop-filter:blur(12px)}
.header-main{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:11px;min-width:235px}
.brand-mark{width:37px;height:42px;background:var(--ink);color:#fff;display:grid;place-items:center;border-radius:11px 11px 11px 3px;font-size:23px;font-weight:800;line-height:1;box-shadow:inset 0 -5px 0 rgba(255,255,255,.12)}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:16px;letter-spacing:.02em;color:var(--ink)}
.brand-text small{margin-top:4px;color:var(--muted);font-size:11px;letter-spacing:.07em}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{padding:9px 12px;border-radius:9px;font-size:14px;font-weight:700;color:#44534f}
.main-nav a:hover,.main-nav a.active{background:var(--accent-soft);color:var(--ink)}
.header-actions{display:flex;align-items:center;gap:10px}
.btn{min-height:46px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:800;line-height:1;white-space:nowrap}
.btn-primary{color:#fff;background:var(--ink);box-shadow:0 8px 20px rgba(23,60,56,.16)}
.btn-primary:hover{background:#0d2f2b;transform:translateY(-2px);box-shadow:0 13px 24px rgba(23,60,56,.24)}
.btn-secondary{background:var(--white);color:var(--ink);border-color:#bfcfc8}
.btn-secondary:hover{background:var(--accent-soft);border-color:var(--accent)}
.btn-terra{background:var(--terra);color:#fff}.btn-terra:hover{background:#aa5735;transform:translateY(-2px)}
.menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink)}
.utility-bar{border-top:1px solid rgba(216,225,220,.75);background:#f1f3ef}
.utility-inner{min-height:34px;display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:12px;color:#586862}
.utility-note{display:flex;gap:8px;align-items:center}.dot{width:7px;height:7px;border-radius:50%;background:var(--terra)}
.utility-links{display:flex;gap:18px}.utility-links a:hover{color:var(--accent)}
section{padding:88px 0}
.section-heading{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 11px;color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.08em}
.eyebrow:before{content:"";width:22px;height:2px;background:var(--terra)}
h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--ink);line-height:1.28}
h1{font-size:clamp(40px,4.3vw,56px);letter-spacing:-.045em;margin-bottom:22px}
h2{font-size:clamp(28px,3vw,36px);letter-spacing:-.03em;margin-bottom:0}
h3{font-size:20px;margin-bottom:9px}.section-desc{max-width:550px;margin:0;color:var(--muted);font-size:15px}
.hero{position:relative;padding:58px 0 54px;overflow:hidden;background:linear-gradient(110deg,#f7f5f0 15%,#edf3ef 100%)}
.hero:before{content:"";position:absolute;width:530px;height:530px;border:1px solid rgba(79,155,132,.18);border-radius:50%;right:-140px;top:-280px}
.hero:after{content:"";position:absolute;width:260px;height:260px;border:1px solid rgba(198,109,69,.16);border-radius:42px;transform:rotate(26deg);right:20%;bottom:-180px}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.04fr .96fr;align-items:center;gap:70px;min-height:490px}
.hero-copy>p{max-width:590px;color:#4e5e59;font-size:17px;line-height:1.9;margin-bottom:29px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:28px}
.trust-tags{display:flex;flex-wrap:wrap;gap:9px}.trust-tags span{padding:6px 11px;border-radius:999px;border:1px solid var(--line);background:rgba(255,254,250,.72);font-size:12px;color:#50625c}
.hero-board{position:relative;min-height:405px}
.board-back{position:absolute;right:7%;top:7px;width:67%;height:87%;border-radius:28px;background:#d9e7df;transform:rotate(6deg)}
.app-panel{position:absolute;right:10%;top:25px;width:min(385px,86%);padding:18px;border-radius:27px;background:var(--ink-deep);box-shadow:0 24px 48px rgba(16,42,39,.22);transform:rotate(-3deg)}
.app-top{display:flex;align-items:center;justify-content:space-between;color:#e8f3ed;font-size:12px;margin-bottom:18px}.app-top b{font-size:14px}.app-dotset{display:flex;gap:4px}.app-dotset i{display:block;width:5px;height:5px;border-radius:50%;background:#80bda9}
.app-card{padding:19px;border-radius:17px;background:#f4f6f1;color:var(--ink)}
.app-card small{color:var(--muted)}.app-card h3{font-size:21px;margin:3px 0 14px}.app-status{display:flex;align-items:center;justify-content:space-between;padding:10px 11px;border-radius:10px;background:var(--accent-soft);font-size:12px;font-weight:700}.app-status b{color:var(--terra)}
.app-feed{display:grid;gap:9px;margin-top:14px}.feed-line{display:flex;align-items:center;gap:9px;padding:9px 0;border-bottom:1px solid #dbe5de;font-size:12px}.feed-icon{width:26px;height:26px;border-radius:8px;background:#d3e6dc;display:grid;place-items:center;color:var(--ink);font-weight:800}.feed-line span{flex:1}.feed-line time{color:var(--muted);font-size:10px}
.board-note{position:absolute;bottom:5px;left:0;width:165px;padding:15px;border-radius:14px;background:var(--white);border:1px solid var(--line);box-shadow:var(--shadow);font-size:12px;color:var(--muted)}.board-note b{display:block;color:var(--ink);font-size:14px;margin-bottom:2px}
.quick-strip{padding:0;position:relative;z-index:2}.quick-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:16px;background:var(--white);overflow:hidden;box-shadow:0 10px 24px rgba(16,42,39,.05)}
.quick-item{min-height:112px;padding:22px 23px;border-right:1px solid var(--line);position:relative}.quick-item:last-child{border-right:0}.quick-num{font-size:12px;color:var(--terra);font-weight:800}.quick-item h3{font-size:16px;margin:2px 0}.quick-item p{margin:0;color:var(--muted);font-size:12px;line-height:1.55}.quick-arrow{position:absolute;right:20px;top:24px;color:var(--accent);font-size:18px}
.channel-grid{display:grid;grid-template-columns:1.15fr .85fr .85fr;grid-template-rows:176px 176px;gap:16px}
.channel-card{position:relative;overflow:hidden;padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);display:flex;flex-direction:column;justify-content:space-between}
.channel-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow-hover)}.channel-card.download{grid-row:span 2;background:var(--ink);color:#f4fbf6}.channel-card.download h3{color:#fff;font-size:27px}.channel-card.download p{color:#c4d8d0;max-width:260px}.channel-card.download:after{content:"↓";position:absolute;right:-8px;bottom:-48px;font-size:210px;line-height:1;color:rgba(255,255,255,.06);font-weight:800}.channel-card.guide{background:#e6efe9}.channel-card.support{background:#f7ebe4}.channel-card h3{margin:0;font-size:19px}.channel-card p{font-size:13px;line-height:1.65;margin:6px 0;color:var(--muted);max-width:260px}.channel-meta{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:800}.channel-icon{font-size:26px;color:var(--accent)}.download .channel-icon{color:#9ed2be}.channel-card:nth-child(4){grid-column:2 / span 2}
.download-section{background:#eef2ee}.download-layout{display:grid;grid-template-columns:.85fr 1fr .8fr;gap:34px;align-items:center}
.device-shell{width:235px;margin:auto;padding:10px;border:8px solid #193a36;border-radius:35px;background:#102a27;box-shadow:0 20px 36px rgba(16,42,39,.2)}.device-screen{min-height:394px;padding:17px 13px;border-radius:22px;background:#f6f4ef}.device-notch{height:16px;width:74px;background:#173c38;border-radius:0 0 11px 11px;margin:-17px auto 17px}.screen-logo{width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff;display:grid;place-items:center;font-weight:800}.screen-title{font-size:18px;font-weight:800;margin:15px 0 12px}.screen-banner{height:99px;padding:13px;border-radius:13px;background:#d8e9df}.screen-banner b{font-size:13px}.screen-banner span{display:block;font-size:11px;color:#567069;margin-top:5px}.screen-list{display:grid;gap:8px;margin-top:13px}.screen-list div{height:35px;border-radius:9px;background:#fff;border:1px solid #e2e8e3}
.download-info h2{margin-bottom:15px}.download-info>p{color:var(--muted);margin-bottom:20px}.download-steps{padding:0;margin:0;list-style:none;counter-reset:steps}.download-steps li{position:relative;padding:0 0 15px 42px;color:#52625d;font-size:14px;counter-increment:steps}.download-steps li:before{content:counter(steps);position:absolute;left:0;top:0;width:27px;height:27px;border-radius:50%;background:var(--ink);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:800}.download-steps li:not(:last-child):after{content:"";position:absolute;left:13px;top:29px;height:18px;border-left:1px dashed #a6bdb3}
.platform-buttons{display:grid;gap:10px;margin-top:19px}.platform-btn{display:flex;align-items:center;gap:11px;padding:12px 14px;background:var(--white);border:1px solid var(--line);border-radius:12px;font-size:13px;font-weight:800}.platform-btn:hover{border-color:var(--accent);background:#f8fffb}.platform-btn i{width:28px;height:28px;display:grid;place-items:center;border-radius:8px;background:var(--accent-soft);font-style:normal}.platform-btn small{display:block;color:var(--muted);font-weight:400;font-size:11px}
.qr-box{padding:24px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);text-align:center}.qr-placeholder{width:150px;height:150px;margin:0 auto 16px;border:1px dashed #93aaa0;border-radius:10px;background:repeating-linear-gradient(45deg,#f1f4f1 0,#f1f4f1 6px,#fafbf8 6px,#fafbf8 12px);display:grid;place-items:center;color:#62736d;font-size:13px;line-height:1.5}.qr-box b{display:block;color:var(--ink);font-size:14px}.qr-box p{margin:5px 0 0;font-size:12px;color:var(--muted);line-height:1.6}
.version-layout{display:grid;grid-template-columns:1fr .9fr;gap:56px;align-items:start}.update-list{border-left:2px solid #bdcec6;padding-left:25px}.update-item{position:relative;padding:0 0 26px}.update-item:before{content:"";position:absolute;left:-32px;top:7px;width:12px;height:12px;background:var(--paper);border:3px solid var(--accent);border-radius:50%}.update-item:last-child{padding-bottom:0}.update-item time{font-size:12px;color:var(--terra);font-weight:800}.update-item h3{font-size:18px;margin:3px 0}.update-item p{font-size:14px;color:var(--muted);margin:0}.update-item a{font-size:13px;color:var(--accent);font-weight:800}.device-adapt{padding:26px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}.device-adapt h3{font-size:22px}.adapt-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}.adapt-tabs span{padding:6px 10px;border-radius:999px;background:var(--accent-soft);font-size:12px;color:var(--ink);font-weight:800}.adapt-preview{height:175px;display:flex;align-items:flex-end;justify-content:center;gap:18px;padding:18px;background:#edf2ee;border-radius:13px}.preview-phone,.preview-tablet,.preview-pc{background:var(--ink);border:5px solid var(--ink);border-radius:12px;position:relative}.preview-phone{height:114px;width:56px}.preview-tablet{height:102px;width:100px}.preview-pc{height:122px;width:150px;border-radius:9px 9px 0 0}.preview-phone:after,.preview-tablet:after,.preview-pc:after{content:"";position:absolute;inset:7px;border-radius:4px;background:linear-gradient(150deg,#d6ebdf 0 40%,#fff 40%)}.preview-pc:before{content:"";position:absolute;width:70px;height:7px;bottom:-12px;left:35px;background:var(--ink);border-radius:0 0 5px 5px}
.features{background:#fbfaf7}.feature-stack{display:grid;gap:14px}.feature-row{display:grid;grid-template-columns:88px 1fr 220px;align-items:center;gap:24px;padding:21px 25px;border:1px solid var(--line);border-radius:15px;background:var(--white);transition:.25s}.feature-row:nth-child(even){margin-left:8%}.feature-row:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateX(3px)}.feature-num{font-size:30px;font-weight:800;color:var(--terra);line-height:1}.feature-copy h3{font-size:19px;margin:0 0 3px}.feature-copy p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}.feature-preview{height:74px;border-radius:10px;background:#e7f0ea;position:relative;overflow:hidden}.feature-preview:before{content:"";position:absolute;left:14px;right:40px;top:15px;height:9px;border-radius:7px;background:#a0cbb9;box-shadow:0 17px 0 #c2ddd0,0 34px 0 #d9e9e0}.feature-preview:after{content:"";position:absolute;right:13px;top:15px;width:18px;height:42px;border-radius:6px;background:#fff}
.news-section{background:#edf2ee}.news-layout{display:grid;gap:14px}.news-feature{display:grid;grid-template-columns:40% 1fr;min-height:240px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white)}.news-cover{position:relative;background:linear-gradient(145deg,#1b4943,#4f9b84);overflow:hidden}.news-cover:before{content:"01";position:absolute;right:-9px;bottom:-64px;color:rgba(255,255,255,.12);font-size:180px;font-weight:800}.news-cover:after{content:"品牌信息";position:absolute;left:24px;top:22px;color:#e3f2ea;font-size:13px;font-weight:800;letter-spacing:.12em}.news-content{padding:29px;display:flex;flex-direction:column;align-items:flex-start}.tag{display:inline-flex;padding:4px 9px;border-radius:999px;background:#e3f0e9;color:#326c5a;font-size:11px;font-weight:800;line-height:1.4}.tag.terra{background:#f4e3d9;color:#9b512f}.news-content h3{font-size:23px;margin:12px 0 8px}.news-content p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}.news-bottom{margin-top:auto;padding-top:16px;width:100%;display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px}.read-link{color:var(--accent);font-size:13px;font-weight:800}.read-link:hover{color:var(--terra)}
.news-compact{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.compact-card{padding:20px;border:1px solid var(--line);border-radius:15px;background:var(--white);display:flex;flex-direction:column;min-height:187px}.compact-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-3px)}.compact-card h3{font-size:17px;margin:11px 0 7px}.compact-card p{font-size:13px;color:var(--muted);line-height:1.65;margin:0}.compact-card footer{margin-top:auto;padding-top:12px;display:flex;justify-content:space-between;color:var(--muted);font-size:12px}
.empty-state{padding:48px 20px;border:1px dashed #a8bbb1;border-radius:var(--radius);background:var(--white);text-align:center}.empty-icon{width:46px;height:46px;border-radius:50%;background:var(--accent-soft);display:grid;place-items:center;margin:0 auto 12px;color:var(--ink);font-size:22px}.empty-state h3{margin:0 0 5px}.empty-state p{margin:0;color:var(--muted);font-size:14px}
.steps-section{padding-bottom:76px}.path-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}.path-step{position:relative;padding:0 24px 0 0}.path-step:not(:last-child):after{content:"";position:absolute;height:1px;background:#b9ccc2;top:19px;left:44px;right:0}.path-node{width:39px;height:39px;border:1px solid var(--accent);border-radius:50%;background:var(--white);display:grid;place-items:center;position:relative;z-index:1;color:var(--ink);font-size:13px;font-weight:800}.path-step h3{margin:14px 0 6px;font-size:17px}.path-step p{max-width:210px;margin:0;color:var(--muted);font-size:13px;line-height:1.7}
.security{background:var(--ink-deep);color:#e7f0eb}.security h2,.security h3{color:#fff}.security .section-desc{color:#b8cec4}.security-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.security-item{padding:23px 18px;border:1px solid rgba(210,232,220,.18);border-radius:14px;background:rgba(255,255,255,.035)}.security-icon{display:grid;place-items:center;width:38px;height:38px;margin-bottom:17px;border-radius:10px;background:rgba(120,188,160,.18);color:#9ed2be;font-size:19px}.security-item h3{font-size:17px;margin-bottom:6px}.security-item p{margin:0;color:#b7cbc2;font-size:13px;line-height:1.7}.security-more{display:inline-block;margin-top:25px;color:#a9d7c4;font-size:14px;font-weight:800}.security-more:hover{color:#fff}
.faq-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px}.faq-intro p{color:var(--muted);font-size:15px}.faq-contact{margin-top:23px;padding:15px;border-left:3px solid var(--terra);background:#f3e7df;color:#71452f;font-size:13px}.faq-list{border-top:1px solid var(--line)}.faq-item{border-bottom:1px solid var(--line)}.faq-question{width:100%;min-height:64px;padding:16px 0;display:flex;align-items:center;gap:14px;border:0;background:transparent;text-align:left;color:var(--ink);font-weight:800;font-size:15px}.faq-no{color:var(--terra);font-size:12px}.faq-question span:nth-child(2){flex:1}.faq-plus{font-size:23px;font-weight:400;color:var(--accent);transition:transform .25s}.faq-item.open .faq-plus{transform:rotate(45deg)}.faq-answer{display:grid;grid-template-rows:0fr;transition:grid-template-rows .28s ease}.faq-answer>div{overflow:hidden}.faq-answer p{margin:0;padding:0 35px 0;color:var(--muted);font-size:14px;line-height:1.75}.faq-item.open .faq-answer{grid-template-rows:1fr}.faq-item.open .faq-answer p{padding-bottom:19px}
.feedback{background:#eef2ee}.feedback-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:28px}.contact-panel{padding:31px;background:var(--ink);color:#deede5;border-radius:var(--radius)}.contact-panel h2{color:#fff;font-size:29px}.contact-panel>p{color:#b9cfc5;font-size:14px}.contact-list{margin:23px 0 0;padding:0;list-style:none}.contact-list li{padding:14px 0;border-top:1px solid rgba(255,255,255,.13);font-size:14px}.contact-list b{display:block;color:#9fcfba;font-size:12px;margin-bottom:2px}.form-card{padding:30px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{margin-bottom:15px}.field label{display:block;margin-bottom:6px;font-size:13px;font-weight:800;color:var(--ink)}.required{color:var(--terra)}.field input,.field select,.field textarea{width:100%;height:48px;padding:0 13px;border:1px solid #c8d6cf;border-radius:10px;background:#fff;color:var(--text);transition:border .2s,box-shadow .2s}.field textarea{height:126px;padding-top:11px;resize:vertical}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(79,155,132,.12);outline:0}.field-help{margin:5px 0 0;color:var(--muted);font-size:12px;line-height:1.5}.form-footer{display:flex;align-items:center;justify-content:space-between;gap:14px}.form-status{display:none;color:var(--danger);font-size:12px}.form-status.show{display:block}
.final-cta{padding:62px 0;background:#d9ebe2;overflow:hidden}.cta-box{position:relative;min-height:260px;padding:43px 47% 43px 42px;border-radius:22px;background:#c5e1d4;overflow:hidden}.cta-box h2{max-width:550px;font-size:34px}.cta-box p{max-width:510px;color:#45655a;font-size:15px}.cta-device{position:absolute;right:11%;bottom:-82px;width:202px;height:337px;padding:9px;border:7px solid var(--ink);border-radius:30px;background:var(--ink);transform:rotate(12deg)}.cta-device:before{content:"官方 APP";display:block;height:100%;padding:48px 17px;border-radius:18px;background:#f8f7f2;color:var(--ink);font-weight:800;font-size:17px}.cta-device:after{content:"版本信息 · 公告通知 · 服务反馈";position:absolute;left:25px;top:88px;width:130px;color:#6a8177;font-size:11px;line-height:1.8}
.site-footer{background:var(--ink-deep);color:#c7d8d0;padding:56px 0 22px}.footer-top{display:grid;grid-template-columns:1.3fr .8fr .9fr;gap:56px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.14)}.footer-brand .brand-text strong{color:#fff}.footer-brand .brand-text small{color:#a7c0b4}.footer-brand>p{max-width:370px;margin:18px 0 0;font-size:13px;line-height:1.75;color:#b6cbc2}.footer-col h3{margin-bottom:15px;color:#fff;font-size:15px}.footer-col a{display:block;margin:8px 0;font-size:13px;color:#b7cbc2}.footer-col a:hover{color:#9ed2be}.footer-col p{font-size:13px;line-height:1.8;margin:7px 0;color:#b7cbc2}.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:19px;color:#93aaa0;font-size:12px}.footer-bottom a:hover{color:#d5e8df}
@media(max-width:1024px){.main-nav a{padding:8px 8px;font-size:13px}.brand{min-width:auto}.hero-grid{gap:30px}.download-layout{gap:22px}.feature-row:nth-child(even){margin-left:3%}.footer-top{gap:30px}}
@media(max-width:768px){.container{width:min(100% - 38px,var(--container))}.header-main{height:68px}.main-nav,.header-actions .btn{display:none}.menu-btn{display:grid;place-items:center}.mobile-nav{display:none;padding:10px 0 17px;border-top:1px solid var(--line)}.mobile-nav.open{display:grid}.mobile-nav a{padding:12px 5px;border-bottom:1px solid var(--line);font-weight:800;color:var(--ink)}.mobile-nav .btn{display:flex;margin-top:14px}.utility-links{display:none}.utility-inner{justify-content:center}.hero{padding-top:40px}.hero-grid{grid-template-columns:1fr;min-height:auto}.hero-board{min-height:350px;max-width:510px;width:100%;margin:auto}.quick-grid{grid-template-columns:1fr 1fr}.quick-item:nth-child(2){border-right:0}.quick-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.channel-grid{grid-template-columns:1fr 1fr;grid-template-rows:190px 160px 160px}.channel-card.download{grid-row:span 2}.channel-card:nth-child(4){grid-column:auto}.download-layout,.version-layout,.faq-layout,.feedback-grid{grid-template-columns:1fr}.download-layout{gap:30px}.qr-box{max-width:360px;margin:auto}.feature-row{grid-template-columns:62px 1fr 150px;gap:15px}.news-compact{grid-template-columns:1fr 1fr}.security-grid{grid-template-columns:1fr 1fr}.path-steps{grid-template-columns:1fr 1fr;gap:28px}.path-step:not(:last-child):after{display:none}.footer-top{grid-template-columns:1fr 1fr}.footer-brand{grid-column:span 2}}
@media(max-width:520px){body{font-size:15px}.brand-text strong{font-size:14px}.brand-text small{font-size:10px}.hero h1{font-size:35px}.hero-copy>p{font-size:15px}.hero-actions .btn{width:100%}section{padding:62px 0}.section-heading{display:block;margin-bottom:25px}.section-desc{margin-top:12px}.app-panel{right:5%;width:89%}.board-note{left:0}.quick-item{padding:17px 15px;min-height:102px}.channel-grid{display:block}.channel-card{min-height:150px;margin-bottom:13px}.channel-card.download{min-height:210px}.download-section{padding-top:60px}.device-shell{transform:scale(.92);margin:-14px auto}.news-feature{grid-template-columns:1fr}.news-cover{min-height:130px}.news-content{padding:22px}.news-content h3{font-size:20px}.news-compact{grid-template-columns:1fr}.feature-row,.feature-row:nth-child(even){grid-template-columns:48px 1fr;margin-left:0;padding:18px}.feature-preview{display:none}.feature-num{font-size:24px}.security-grid{grid-template-columns:1fr}.path-steps{grid-template-columns:1fr;gap:20px}.path-step{padding-left:48px}.path-node{position:absolute;left:0;top:0}.path-step:not(:last-child):after{display:block;left:19px;top:42px;bottom:-20px;right:auto;width:1px;height:auto}.form-row{grid-template-columns:1fr}.form-footer{align-items:flex-start;flex-direction:column}.form-footer .btn{width:100%}.cta-box{padding:30px 24px 195px}.cta-box h2{font-size:28px}.cta-device{right:50%;margin-right:-101px;transform:rotate(8deg) scale(.76);transform-origin:bottom}.footer-top{grid-template-columns:1fr;gap:24px}.footer-brand{grid-column:auto}.footer-bottom{align-items:flex-start;flex-direction:column;gap:7px}}

/* roulang page: category1 */
:root{
      --ink:#173c38;--ink-deep:#102a27;--accent:#4f9b84;--accent-soft:#dcece5;
      --terra:#c66d45;--paper:#f7f5f0;--white:#fffefa;--line:#d8e1dc;
      --muted:#667671;--text:#263633;--soft:#eef3ef;--danger:#b35e40;
      --radius:18px;--radius-sm:12px;--shadow:0 14px 35px rgba(16,42,39,.08);
      --shadow-hover:0 18px 42px rgba(16,42,39,.15);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(79,155,132,.35);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(247,245,240,.94);border-bottom:1px solid rgba(216,225,220,.82);backdrop-filter:blur(12px)}
    .header-main{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:235px}
    .brand-mark{width:37px;height:42px;background:var(--ink);color:#fff;display:grid;place-items:center;border-radius:11px 11px 11px 3px;font-size:23px;font-weight:800;line-height:1;box-shadow:inset 0 -5px 0 rgba(255,255,255,.12)}
    .brand-text{display:flex;flex-direction:column;line-height:1.2}
    .brand-text strong{font-size:16px;letter-spacing:.02em;color:var(--ink)}
    .brand-text small{margin-top:4px;color:var(--muted);font-size:11px;letter-spacing:.07em}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:9px 12px;border-radius:9px;font-size:14px;font-weight:700;color:#44534f}
    .main-nav a:hover,.main-nav a.active{background:var(--accent-soft);color:var(--ink)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{min-height:46px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:800;line-height:1;white-space:nowrap}
    .btn-primary{color:#fff;background:var(--ink);box-shadow:0 8px 20px rgba(23,60,56,.16)}
    .btn-primary:hover{background:#0d2f2b;transform:translateY(-2px);box-shadow:0 13px 24px rgba(23,60,56,.24)}
    .btn-secondary{background:var(--white);color:var(--ink);border-color:#bfcfc8}
    .btn-secondary:hover{background:var(--accent-soft);border-color:var(--accent)}
    .menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink);font-size:20px}
    .utility-bar{border-top:1px solid rgba(216,225,220,.7);background:rgba(255,254,250,.58)}
    .utility-inner{min-height:37px;display:flex;align-items:center;justify-content:space-between;gap:20px;color:var(--muted);font-size:12px}
    .utility-inner strong{color:var(--ink);font-weight:800}
    section{padding:82px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 11px;color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--terra)}
    .section-heading{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:32px}
    .section-heading h2{margin:0;color:var(--ink);font-size:32px;line-height:1.35;font-weight:800}
    .section-desc{max-width:535px;margin:0;color:var(--muted);font-size:15px}
    .page-banner{position:relative;overflow:hidden;padding:60px 0 64px;background:linear-gradient(115deg,#f7f5f0 5%,#eaf1ed 100%);border-bottom:1px solid var(--line)}
    .page-banner:before{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(79,155,132,.19);border-radius:50%;right:-105px;top:-250px}
    .page-banner:after{content:"";position:absolute;width:182px;height:182px;border:1px solid rgba(198,109,69,.18);border-radius:34px;transform:rotate(24deg);right:19%;bottom:-120px}
    .breadcrumb{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:9px;margin-bottom:29px;color:var(--muted);font-size:13px}
    .breadcrumb span:last-child{color:var(--ink);font-weight:700}
    .breadcrumb i{font-style:normal;color:#9cacA5}
    .banner-grid{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1fr) 325px;gap:55px;align-items:end}
    .page-banner h1{max-width:780px;margin:0;color:var(--ink);font-size:50px;line-height:1.24;letter-spacing:-.035em;font-weight:850}
    .banner-copy{max-width:745px;margin:18px 0 0;color:#53625d;font-size:17px;line-height:1.9}
    .banner-meta{display:flex;align-items:center;gap:13px;padding:22px;border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,254,250,.78);box-shadow:var(--shadow)}
    .meta-icon{flex:0 0 46px;width:46px;height:46px;display:grid;place-items:center;border-radius:13px;background:var(--ink);color:#fff;font-weight:900;font-size:19px}
    .banner-meta small{display:block;color:var(--muted);font-size:12px}
    .banner-meta strong{display:block;margin-top:3px;color:var(--ink);font-size:15px}
    .feature-section{padding-top:68px}
    .focus-card{display:grid;grid-template-columns:46% 54%;min-height:360px;overflow:hidden;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);box-shadow:var(--shadow)}
    .focus-visual{position:relative;min-height:300px;padding:28px;background:var(--ink);overflow:hidden}
    .focus-visual:before{content:"";position:absolute;width:230px;height:230px;border:1px solid rgba(255,255,255,.18);border-radius:50%;left:-80px;top:-75px}
    .focus-visual:after{content:"";position:absolute;width:270px;height:118px;right:-42px;bottom:31px;border:1px solid rgba(79,155,132,.75);border-radius:18px;transform:rotate(-12deg)}
    .visual-label{position:relative;z-index:1;display:inline-flex;padding:6px 11px;border:1px solid rgba(255,255,255,.22);border-radius:999px;color:#d9ece4;font-size:12px;font-weight:800}
    .visual-date{position:absolute;z-index:1;left:29px;bottom:26px;color:#fff;font-size:38px;line-height:1;font-weight:800;letter-spacing:-.04em}
    .visual-date small{display:block;margin-top:8px;color:#b8d0c6;font-size:12px;letter-spacing:.07em}
    .focus-content{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;padding:42px 48px}
    .badge{display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;background:#f7ebe4;color:#9d4e30;font-size:12px;font-weight:800}
    .focus-content h2{max-width:570px;margin:15px 0 12px;color:var(--ink);font-size:29px;line-height:1.45;font-weight:800}
    .focus-content p{max-width:580px;margin:0 0 24px;color:var(--muted);font-size:15px}
    .text-link{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:14px;font-weight:800}
    .text-link:hover{gap:12px;color:var(--accent)}
    .timeline-wrap{display:grid;grid-template-columns:1fr 308px;gap:52px;align-items:start}
    .news-timeline{position:relative;margin:0;padding:0;list-style:none}
    .news-timeline:before{content:"";position:absolute;left:6px;top:7px;bottom:9px;width:1px;background:var(--line)}
    .timeline-item{position:relative;padding:0 0 29px 38px}
    .timeline-item:last-child{padding-bottom:0}
    .timeline-dot{position:absolute;left:0;top:8px;width:13px;height:13px;border:3px solid var(--paper);border-radius:50%;background:var(--accent);box-shadow:0 0 0 1px var(--accent)}
    .timeline-item:nth-child(2) .timeline-dot{background:var(--terra);box-shadow:0 0 0 1px var(--terra)}
    .timeline-card{display:block;padding:20px 22px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--white)}
    .timeline-card:hover{transform:translateX(4px);border-color:var(--accent);box-shadow:0 10px 24px rgba(16,42,39,.08)}
    .timeline-card time{display:block;color:var(--terra);font-size:12px;font-weight:800;letter-spacing:.04em}
    .timeline-card h3{margin:5px 0 6px;color:var(--ink);font-size:18px;line-height:1.45;font-weight:800}
    .timeline-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .timeline-aside{padding:26px;border-radius:var(--radius);background:#e8f0eb;border:1px solid #d1e0d8}
    .timeline-aside h3{margin:0 0 10px;color:var(--ink);font-size:20px;font-weight:800}
    .timeline-aside p{margin:0 0 19px;color:#53645e;font-size:14px;line-height:1.75}
    .timeline-aside .aside-rule{height:1px;margin:17px 0;background:#c8d9d0}
    .timeline-aside small{display:block;color:var(--muted);font-size:12px}
    .more-line{margin-top:27px;padding-left:38px}
    .notice-section{background:var(--soft)}
    .notice-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
    .notice-card{position:relative;min-height:204px;padding:30px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);overflow:hidden}
    .notice-card:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:var(--shadow-hover)}
    .notice-card:after{position:absolute;right:20px;bottom:-31px;color:rgba(23,60,56,.06);font-size:115px;font-weight:900;line-height:1}
    .notice-card.notice:after{content:"!"}
    .notice-card.event:after{content:"+"}
    .notice-card h3{position:relative;z-index:1;margin:12px 0 8px;color:var(--ink);font-size:21px;font-weight:800}
    .notice-card p{position:relative;z-index:1;max-width:420px;margin:0 0 17px;color:var(--muted);font-size:14px;line-height:1.75}
    .milestone-layout{display:grid;grid-template-columns:260px 1fr;gap:58px;align-items:start}
    .milestone-intro{position:sticky;top:126px}
    .milestone-intro h2{margin:0 0 13px;color:var(--ink);font-size:32px;line-height:1.38;font-weight:800}
    .milestone-intro p{margin:0;color:var(--muted);font-size:15px}
    .milestones{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .milestone{min-height:190px;padding:25px;border-top:3px solid var(--accent);border-radius:0 0 var(--radius-sm) var(--radius-sm);background:var(--white);box-shadow:0 6px 17px rgba(16,42,39,.04)}
    .milestone:nth-child(2){border-color:var(--terra);margin-top:35px}
    .milestone:nth-child(3){border-color:#88ae9d;margin-top:70px}
    .milestone span{display:block;color:var(--terra);font-size:13px;font-weight:800;letter-spacing:.08em}
    .milestone h3{margin:13px 0 8px;color:var(--ink);font-size:19px;font-weight:800}
    .milestone p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .tag-panel{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;padding:38px 42px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}
    .tag-panel h2{margin:0 0 9px;color:var(--ink);font-size:27px;font-weight:800}
    .tag-panel p{margin:0;color:var(--muted);font-size:15px}
    .tag-cloud{display:flex;flex-wrap:wrap;align-content:center;gap:10px}
    .tag{display:inline-flex;align-items:center;min-height:35px;padding:5px 14px;border:1px solid var(--line);border-radius:999px;background:var(--soft);color:#42554e;font-size:13px;font-weight:700}
    .tag:nth-child(2n){background:#f8ece6;border-color:#ead3c6;color:#975237}
    .subscribe-section{padding-bottom:92px}
    .subscribe-panel{position:relative;overflow:hidden;display:grid;grid-template-columns:1fr auto;gap:35px;align-items:center;padding:43px 48px;border-radius:var(--radius);background:var(--ink);color:#fff}
    .subscribe-panel:after{content:"01";position:absolute;right:33px;top:-53px;color:rgba(255,255,255,.06);font-size:180px;line-height:1;font-weight:900}
    .subscribe-panel h2{position:relative;z-index:1;margin:0 0 9px;color:#fff;font-size:30px;font-weight:800}
    .subscribe-panel p{position:relative;z-index:1;max-width:660px;margin:0;color:#c7d8d0;font-size:15px}
    .subscribe-actions{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:11px}
    .btn-light{color:var(--ink);background:#fffefa}
    .btn-light:hover{background:var(--accent-soft);transform:translateY(-2px)}
    .btn-outline-light{border-color:rgba(255,255,255,.42);color:#fff;background:transparent}
    .btn-outline-light:hover{border-color:#fff;background:rgba(255,255,255,.12)}
    .site-footer{padding:60px 0 22px;background:var(--ink);color:#d5e2dc}
    .footer-top{display:grid;grid-template-columns:1.35fr .7fr .85fr;gap:54px;padding-bottom:43px}
    .site-footer .brand{min-width:0}
    .site-footer .brand-mark{background:#f7f5f0;color:var(--ink)}
    .site-footer .brand-text strong{color:#fff}
    .site-footer .brand-text small{color:#a9c1b7}
    .footer-brand>p{max-width:340px;margin:18px 0 0;color:#abc0b7;font-size:14px;line-height:1.8}
    .footer-col h3{margin:0 0 14px;color:#fff;font-size:15px;font-weight:800}
    .footer-col a,.footer-col p{display:block;margin:0 0 9px;color:#b9cbc4;font-size:13px;line-height:1.75}
    .footer-col a:hover{color:#fff}
    .footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(216,225,220,.18);color:#9fb6ac;font-size:12px}
    @media (max-width:1024px){
      .header-main{gap:12px}
      .main-nav a{padding:8px 8px;font-size:13px}
      .banner-grid{grid-template-columns:1fr 270px;gap:28px}
      .focus-content{padding:34px}
      .timeline-wrap{gap:30px}
      .milestone-layout{gap:34px}
      .footer-top{gap:30px}
    }
    @media (max-width:768px){
      .container{width:min(100% - 40px,var(--container))}
      .header-main{height:70px}
      .header-actions .btn{display:none}
      .menu-btn{display:grid;place-items:center}
      .main-nav{display:none}
      .main-nav.open{position:absolute;top:70px;left:0;right:0;display:flex;flex-direction:column;align-items:stretch;gap:3px;padding:16px 20px 20px;background:var(--paper);border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
      .main-nav.open a{padding:12px 14px}
      .utility-inner{justify-content:center;text-align:center}
      .utility-inner span{display:none}
      section{padding:62px 0}
      .page-banner{padding:42px 0 47px}
      .banner-grid{grid-template-columns:1fr;gap:25px}
      .page-banner h1{font-size:38px}
      .banner-copy{font-size:16px}
      .banner-meta{max-width:370px}
      .section-heading{display:block;margin-bottom:26px}
      .section-heading h2{font-size:28px}
      .section-desc{margin-top:10px}
      .focus-card{grid-template-columns:1fr}
      .focus-visual{min-height:205px}
      .focus-content{padding:30px}
      .focus-content h2{font-size:25px}
      .timeline-wrap{grid-template-columns:1fr}
      .timeline-aside{display:none}
      .notice-grid{grid-template-columns:1fr}
      .milestone-layout{grid-template-columns:1fr}
      .milestone-intro{position:static}
      .milestones{grid-template-columns:1fr 1fr}
      .milestone:nth-child(2),.milestone:nth-child(3){margin-top:0}
      .tag-panel{grid-template-columns:1fr;padding:30px}
      .subscribe-panel{grid-template-columns:1fr;padding:34px}
      .footer-top{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:1 / -1}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .container{width:calc(100% - 36px)}
      .brand{min-width:0}
      .brand-text strong{font-size:14px}
      .brand-text small{font-size:10px}
      .utility-bar{display:none}
      .page-banner h1{font-size:32px}
      .page-banner:after{right:-50px}
      .focus-content{padding:25px}
      .focus-content h2{font-size:23px}
      .timeline-item{padding-left:28px}
      .more-line{padding-left:28px}
      .timeline-card{padding:18px}
      .milestones{grid-template-columns:1fr}
      .milestone{min-height:0}
      .tag-panel{padding:25px}
      .subscribe-panel{padding:29px 25px}
      .subscribe-panel h2{font-size:25px}
      .subscribe-actions{display:grid}
      .subscribe-actions .btn{width:100%}
      .footer-top{grid-template-columns:1fr;gap:28px}
      .footer-brand{grid-column:auto}
      .footer-bottom{align-items:flex-start;flex-direction:column;gap:4px}
    }

/* roulang page: article */
:root{
      --ink:#173c38;--ink-deep:#102a27;--accent:#4f9b84;--accent-soft:#dcece5;
      --terra:#c66d45;--paper:#f7f5f0;--white:#fffefa;--line:#d8e1dc;
      --muted:#667671;--text:#263633;--soft:#eef3ef;--danger:#b35e40;
      --radius:18px;--radius-sm:12px;--shadow:0 14px 35px rgba(16,42,39,.08);
      --shadow-hover:0 18px 42px rgba(16,42,39,.15);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid rgba(79,155,132,.35);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(247,245,240,.95);border-bottom:1px solid rgba(216,225,220,.82);backdrop-filter:blur(12px)}
    .header-main{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:235px}
    .brand-mark{width:37px;height:42px;background:var(--ink);color:#fff;display:grid;place-items:center;border-radius:11px 11px 11px 3px;font-size:23px;font-weight:800;line-height:1;box-shadow:inset 0 -5px 0 rgba(255,255,255,.12)}
    .brand-text{display:flex;flex-direction:column;line-height:1.2}
    .brand-text strong{font-size:16px;letter-spacing:.02em;color:var(--ink)}
    .brand-text small{margin-top:4px;color:var(--muted);font-size:11px;letter-spacing:.07em}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:9px 12px;border-radius:9px;font-size:14px;font-weight:700;color:#44534f}
    .main-nav a:hover,.main-nav a.active{background:var(--accent-soft);color:var(--ink)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{min-height:46px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:800;line-height:1;white-space:nowrap}
    .btn-primary{color:#fff;background:var(--ink);box-shadow:0 8px 20px rgba(23,60,56,.16)}
    .btn-primary:hover{background:#0d2f2b;transform:translateY(-2px);box-shadow:0 13px 24px rgba(23,60,56,.24)}
    .btn-secondary{background:var(--white);color:var(--ink);border-color:#bfcfc8}
    .btn-secondary:hover{background:var(--accent-soft);border-color:var(--accent)}
    .btn-terra{background:var(--terra);color:#fff}
    .btn-terra:hover{background:#aa5735;transform:translateY(-2px)}
    .menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink)}
    section{padding:76px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 11px;color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--terra)}
    .article-hero{padding:82px 0 62px;background:linear-gradient(110deg,#f7f5f0 15%,#edf3ef 100%);border-bottom:1px solid var(--line)}
    .article-hero-inner{max-width:920px}
    .article-hero h1{margin:0 0 22px;color:var(--ink-deep);font-size:clamp(34px,5vw,54px);line-height:1.25;letter-spacing:-.035em}
    .article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:11px;color:var(--muted);font-size:14px}
    .tag{display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;background:var(--accent-soft);color:var(--ink);font-size:13px;font-weight:800}
    .crumb-section{padding:22px 0 0}
    .breadcrumb{display:flex;flex-wrap:wrap;gap:9px;color:var(--muted);font-size:14px;margin:0}
    .breadcrumb a:hover{color:var(--accent)}
    .breadcrumb .current{color:var(--text);font-weight:700;max-width:430px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .article-intro{padding:32px 0 18px}
    .intro-box{max-width:820px;padding:24px 28px;border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:var(--radius-sm);background:var(--white);color:#50625c;font-size:17px}
    .reading-section{padding-top:36px}
    .reading-column{max-width:820px;margin:0 auto}
    .reading-column article{font-size:17px;line-height:1.95}
    .reading-column article h2{margin:42px 0 15px;color:var(--ink);font-size:29px;line-height:1.4}
    .reading-column article h3{margin:30px 0 10px;color:var(--ink);font-size:21px;line-height:1.5}
    .reading-column article p{margin:0 0 22px}
    .reading-column article ul,.reading-column article ol{padding-left:25px;margin:0 0 25px}
    .reading-column article li{margin:7px 0}
    .reading-column article blockquote{margin:28px 0;padding:20px 24px;border-left:4px solid var(--terra);background:#f5ebe5;color:#5e514b;border-radius:0 var(--radius-sm) var(--radius-sm) 0}
    .reading-column article img{margin:28px auto;border-radius:14px;border:1px solid var(--line)}
    .notice-section{padding:32px 0 70px}
    .notice-box{max-width:820px;margin:0 auto;padding:22px 25px;border-radius:var(--radius-sm);background:var(--ink-deep);color:#e8f2ed;display:flex;gap:17px;align-items:flex-start}
    .notice-icon{width:31px;height:31px;flex:none;border:1px solid rgba(255,255,255,.35);border-radius:50%;display:grid;place-items:center;color:#a8d5c1;font-weight:800}
    .notice-box h3{margin:0 0 4px;font-size:18px;color:#fff}
    .notice-box p{margin:0;color:#c4d8d0;font-size:14px}
    .related-section{background:#eef2ee}
    .section-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:28px}
    .section-head h2{margin:0;color:var(--ink);font-size:32px;line-height:1.35}
    .section-head p{margin:0;color:var(--muted);font-size:14px}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}
    .related-card{min-height:190px;padding:23px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);display:flex;flex-direction:column;justify-content:space-between}
    .related-card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-3px)}
    .related-card h3{margin:15px 0 12px;color:var(--ink);font-size:19px;line-height:1.5}
    .related-card:hover h3{color:var(--accent)}
    .card-foot{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:13px}
    .arrow{color:var(--accent);font-size:20px}
    .support-section{padding:44px 0 86px}
    .support-bar{padding:27px 30px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);display:flex;justify-content:space-between;align-items:center;gap:25px}
    .support-bar h2{margin:0 0 5px;color:var(--ink);font-size:23px}
    .support-bar p{margin:0;color:var(--muted);font-size:14px}
    .site-footer{padding:56px 0 22px;background:var(--ink-deep);color:#dbe9e2}
    .footer-top{display:grid;grid-template-columns:1.5fr 1fr 1.15fr;gap:70px;padding-bottom:42px}
    .footer-brand .brand-text strong{color:#f2fbf5}
    .footer-brand .brand-text small{color:#a9c2b8}
    .footer-brand p{max-width:330px;margin:20px 0 0;color:#a9c2b8;font-size:14px;line-height:1.8}
    .footer-col{display:flex;flex-direction:column;align-items:flex-start;gap:8px;font-size:14px;color:#a9c2b8}
    .footer-col h3{margin:0 0 10px;color:#fff;font-size:16px}
    .footer-col a:hover{color:#fff}
    .footer-col p{margin:0}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(216,225,220,.18);color:#86a49a;font-size:12px}
    @media(max-width:1024px){
      .header-main{gap:12px}.main-nav a{padding:8px 8px;font-size:13px}.brand{min-width:210px}
      .related-grid{grid-template-columns:repeat(2,1fr)}.footer-top{gap:35px}
    }
    @media(max-width:768px){
      .container{width:min(var(--container),calc(100% - 40px))}
      .header-main{height:70px}.main-nav{display:none;position:absolute;left:20px;right:20px;top:78px;padding:12px;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}.main-nav a{padding:12px 14px}
      .header-actions .btn{display:none}.menu-btn{display:grid;place-items:center}
      .article-hero{padding:60px 0 45px}.article-hero h1{font-size:36px}
      section{padding:58px 0}.section-head{display:block}.section-head p{margin-top:8px}
      .related-grid{grid-template-columns:1fr}.support-bar{display:block}.support-bar .btn{margin-top:20px}
      .footer-top{grid-template-columns:1fr 1fr;gap:35px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 36px)}.brand{min-width:0}.brand-text strong{font-size:14px}.brand-text small{font-size:10px}
      .article-hero h1{font-size:30px}.article-meta{font-size:13px}.intro-box{padding:19px;font-size:16px}
      .reading-column article{font-size:16px}.reading-column article h2{font-size:25px}
      .notice-box{padding:19px}.footer-top{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
    }

/* roulang page: category2 */
:root{
      --ink:#173c38;--ink-deep:#102a27;--accent:#4f9b84;--accent-soft:#dcece5;
      --terra:#c66d45;--paper:#f7f5f0;--white:#fffefa;--line:#d8e1dc;
      --muted:#667671;--text:#263633;--soft:#eef3ef;--danger:#b35e40;
      --radius:18px;--radius-sm:12px;--shadow:0 14px 35px rgba(16,42,39,.08);
      --shadow-hover:0 18px 42px rgba(16,42,39,.15);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(79,155,132,.35);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(247,245,240,.94);border-bottom:1px solid rgba(216,225,220,.82);backdrop-filter:blur(12px)}
    .header-main{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:235px}
    .brand-mark{width:37px;height:42px;background:var(--ink);color:#fff;display:grid;place-items:center;border-radius:11px 11px 11px 3px;font-size:23px;font-weight:800;line-height:1;box-shadow:inset 0 -5px 0 rgba(255,255,255,.12)}
    .brand-text{display:flex;flex-direction:column;line-height:1.2}
    .brand-text strong{font-size:16px;letter-spacing:.02em;color:var(--ink)}
    .brand-text small{margin-top:4px;color:var(--muted);font-size:11px;letter-spacing:.07em}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:9px 12px;border-radius:9px;font-size:14px;font-weight:700;color:#44534f}
    .main-nav a:hover,.main-nav a.active{background:var(--accent-soft);color:var(--ink)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{min-height:46px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:800;line-height:1;white-space:nowrap}
    .btn-primary{color:#fff;background:var(--ink);box-shadow:0 8px 20px rgba(23,60,56,.16)}
    .btn-primary:hover{background:#0d2f2b;transform:translateY(-2px);box-shadow:0 13px 24px rgba(23,60,56,.24)}
    .btn-secondary{background:var(--white);color:var(--ink);border-color:#bfcfc8}
    .btn-secondary:hover{background:var(--accent-soft);border-color:var(--accent)}
    .menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink);font-size:20px}
    .mobile-panel{display:none}
    section{padding:82px 0}
    .section-heading{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:32px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 10px;color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--terra)}
    h1,h2,h3,p{margin-top:0}
    h1{color:var(--ink);font-size:50px;line-height:1.22;letter-spacing:-.04em;margin:0 0 18px}
    h2{font-size:32px;line-height:1.35;letter-spacing:-.03em;color:var(--ink);margin:0}
    h3{font-size:19px;line-height:1.45;color:var(--ink)}
    .section-desc{max-width:570px;margin:0;color:var(--muted);font-size:15px}
    .page-hero{position:relative;overflow:hidden;padding:54px 0 58px;background:linear-gradient(115deg,#f7f5f0 8%,#e9f0ec 100%);border-bottom:1px solid var(--line)}
    .page-hero:before{content:"";position:absolute;right:8%;top:-150px;width:330px;height:330px;border:1px solid rgba(79,155,132,.22);border-radius:50%}
    .page-hero:after{content:"";position:absolute;right:22%;bottom:-110px;width:170px;height:170px;border:1px solid rgba(198,109,69,.18);border-radius:34px;transform:rotate(28deg)}
    .breadcrumb{position:relative;z-index:1;display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin-bottom:25px;font-size:13px;color:var(--muted)}
    .breadcrumb a:hover{color:var(--accent)}
    .breadcrumb i{font-style:normal;color:#9aaba4}
    .page-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:55px;align-items:center}
    .hero-intro{max-width:670px;color:#53635e;font-size:17px;line-height:1.9;margin-bottom:25px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px}
    .hero-meta span{padding:6px 11px;border-radius:999px;border:1px solid var(--line);background:rgba(255,254,250,.72);color:#50625c;font-size:12px}
    .app-symbol{position:relative;min-height:248px;display:flex;align-items:center;justify-content:center}
    .device-card{position:relative;width:255px;padding:13px;background:var(--ink-deep);border:7px solid #214843;border-radius:30px;box-shadow:20px 20px 0 rgba(79,155,132,.12),0 20px 42px rgba(16,42,39,.2)}
    .device-top{width:72px;height:6px;background:#58736c;border-radius:9px;margin:0 auto 13px}
    .device-screen{min-height:188px;padding:18px;border-radius:20px;background:#f3f5f0}
    .app-symbol-mark{display:grid;place-items:center;width:43px;height:43px;border-radius:13px;background:var(--ink);color:#fff;font-size:25px;font-weight:800}
    .device-screen h3{margin:14px 0 2px;font-size:17px}
    .device-screen p{margin:0;color:var(--muted);font-size:11px;line-height:1.55}
    .screen-lines{display:grid;gap:8px;margin-top:16px}
    .screen-lines span{display:block;height:14px;border-radius:8px;background:#dbe7e0}
    .screen-lines span:nth-child(2){width:78%;background:#b8d5c8}
    .screen-lines span:nth-child(3){width:60%;background:#edc4ae}
    .floating-version{position:absolute;right:4px;bottom:7px;padding:11px 14px;border:1px solid var(--line);border-radius:12px;background:var(--white);box-shadow:var(--shadow);font-size:12px;font-weight:800;color:var(--ink)}
    .download-card{display:grid;grid-template-columns:1fr 216px;gap:28px;padding:34px;border:1px solid #315650;border-radius:var(--radius);background:var(--ink);color:#eef7f2;box-shadow:var(--shadow)}
    .download-card h2{color:#fff;margin-bottom:10px}
    .download-card p{margin:0 0 22px;color:#c5d9d1;max-width:650px}
    .download-card .badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
    .status-badge{padding:5px 10px;border-radius:999px;background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.18);font-size:12px;color:#dfeee7}
    .download-card .btn-primary{background:#fff;color:var(--ink)}
    .download-card .btn-primary:hover{background:#dcece5}
    .download-card .btn-secondary{background:transparent;color:#fff;border-color:rgba(255,255,255,.42)}
    .download-card .btn-secondary:hover{background:rgba(255,255,255,.1)}
    .qr-box{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:190px;padding:18px;border:1px dashed rgba(255,255,255,.48);border-radius:15px;background:rgba(0,0,0,.12);text-align:center}
    .qr-icon{width:60px;height:60px;display:grid;place-items:center;border:2px solid #dcece5;border-radius:12px;color:#dcece5;font-size:28px;margin-bottom:10px}
    .qr-box strong{font-size:14px;color:#fff}
    .qr-box small{margin-top:4px;color:#c6d8d1;font-size:11px;line-height:1.55}
    .compatibility{background:var(--white);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
    .compatibility-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:58px;align-items:start}
    .device-nav{display:grid;gap:10px}
    .device-tab{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--paper);font-weight:800;color:var(--ink)}
    .device-tab.active{border-color:var(--accent);background:var(--accent-soft)}
    .device-tab span{color:var(--muted);font-weight:600;font-size:13px}
    .compat-list{display:grid;gap:0;border-top:1px solid var(--line)}
    .compat-row{display:grid;grid-template-columns:140px 1fr auto;gap:20px;align-items:center;padding:18px 0;border-bottom:1px solid var(--line)}
    .compat-row strong{color:var(--ink)}
    .compat-row p{margin:0;color:var(--muted);font-size:14px}
    .compat-state{padding:4px 9px;border-radius:999px;background:#e6efe9;color:#367562;font-size:12px;font-weight:800}
    .steps-wrap{display:grid;grid-template-columns:.82fr 1.18fr;gap:62px;align-items:start}
    .steps-note{padding:25px;border-left:3px solid var(--terra);background:#f7ebe4;border-radius:0 var(--radius-sm) var(--radius-sm) 0}
    .steps-note h3{margin-bottom:8px}
    .steps-note p{margin:0;color:#6d574d;font-size:14px}
    .download-steps{position:relative;display:grid;gap:0}
    .download-step{position:relative;display:grid;grid-template-columns:58px 1fr;gap:19px;padding:0 0 27px}
    .download-step:not(:last-child):before{content:"";position:absolute;left:23px;top:52px;bottom:4px;width:1px;background:var(--line)}
    .step-number{position:relative;z-index:1;display:grid;place-items:center;width:47px;height:47px;border-radius:50%;background:var(--accent-soft);border:1px solid #bfdacc;color:var(--ink);font-size:15px;font-weight:900}
    .download-step:nth-child(2) .step-number{background:#f7ebe4;border-color:#ebc6b4;color:#9d5134}
    .download-step:nth-child(3) .step-number{background:var(--soft)}
    .download-step h3{margin:5px 0 4px}
    .download-step p{margin:0;color:var(--muted);font-size:14px;max-width:650px}
    .versions{background:#eef2ee}
    .version-grid{display:grid;grid-template-columns:.78fr 1.22fr;gap:42px;align-items:start}
    .version-lead{padding:28px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius)}
    .version-lead .version-no{display:block;margin-bottom:12px;color:var(--terra);font-size:14px;font-weight:900;letter-spacing:.08em}
    .version-lead p{color:var(--muted);font-size:14px;margin-bottom:20px}
    .version-timeline{border-top:1px solid var(--line)}
    .version-item{display:grid;grid-template-columns:105px 1fr auto;gap:20px;align-items:start;padding:21px 0;border-bottom:1px solid var(--line)}
    .version-date{font-size:13px;font-weight:800;color:var(--terra)}
    .version-info h3{font-size:17px;margin:0 0 4px}
    .version-info p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .text-link{display:inline-flex;align-items:center;gap:7px;color:var(--accent);font-size:14px;font-weight:800}
    .text-link:hover{color:var(--ink);transform:translateX(3px)}
    .notice-grid{display:grid;grid-template-columns:1fr 1.08fr;gap:20px}
    .notice-main{padding:32px;border-radius:var(--radius);background:var(--ink-deep);color:#f1f8f4}
    .notice-main h2{color:#fff;margin:8px 0 10px}
    .notice-main p{margin:0;color:#c8d9d2}
    .notice-points{display:grid;gap:14px}
    .notice-point{display:grid;grid-template-columns:38px 1fr;gap:13px;padding:17px 18px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--white)}
    .notice-point .icon{display:grid;place-items:center;width:35px;height:35px;border-radius:10px;background:#f7ebe4;color:var(--terra);font-weight:900}
    .notice-point h3{font-size:16px;margin:0 0 2px}
    .notice-point p{margin:0;color:var(--muted);font-size:13px;line-height:1.65}
    .faq-section{padding-top:22px}
    .faq-wrap{max-width:920px;margin:0 auto}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line)}
    .faq-question{width:100%;min-height:66px;padding:16px 0;border:0;background:transparent;display:flex;align-items:center;gap:15px;text-align:left;color:var(--ink);font-size:17px;font-weight:800}
    .faq-no{color:var(--terra);font-size:13px;letter-spacing:.07em}
    .faq-toggle{margin-left:auto;width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--soft);color:var(--ink);font-size:20px;font-weight:500;transition:transform .25s ease,background .25s ease}
    .faq-question[aria-expanded="true"] .faq-toggle{transform:rotate(45deg);background:var(--accent-soft)}
    .faq-answer{display:none;padding:0 43px 20px;color:var(--muted);font-size:15px;line-height:1.82}
    .faq-answer.open{display:block}
    .site-footer{padding:62px 0 22px;background:var(--ink-deep);color:#d4e0da}
    .footer-top{display:grid;grid-template-columns:1.55fr .75fr .95fr;gap:54px;padding-bottom:40px}
    .footer-brand .brand{margin-bottom:16px}
    .site-footer .brand-mark{background:#e6efe9;color:var(--ink)}
    .site-footer .brand-text strong{color:#fff}
    .site-footer .brand-text small{color:#a9c0b6}
    .footer-brand p{max-width:370px;margin:0;color:#b4c8c0;font-size:14px;line-height:1.8}
    .footer-col h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer-col a,.footer-col p{display:block;margin:0 0 8px;color:#b4c8c0;font-size:13px;line-height:1.75}
    .footer-col a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(216,225,220,.16);color:#91aaa0;font-size:12px}
    @media (max-width:1024px){
      .main-nav{gap:0}
      .main-nav a{padding:8px 8px;font-size:13px}
      .page-hero-grid,.compatibility-grid,.steps-wrap,.version-grid{gap:34px}
      .download-card{grid-template-columns:1fr 190px}
      .footer-top{gap:30px}
    }
    @media (max-width:768px){
      .container{width:min(100% - 40px,var(--container))}
      .header-main{height:68px}
      .brand{min-width:0}
      .brand-text strong{font-size:14px}
      .brand-text small{font-size:10px}
      .main-nav,.header-actions{display:none}
      .menu-btn{display:grid;place-items:center}
      .mobile-panel{display:none;padding:8px 20px 18px;background:var(--paper);border-top:1px solid var(--line)}
      .mobile-panel.open{display:grid;gap:6px}
      .mobile-panel a{padding:11px 12px;border-radius:9px;color:var(--ink);font-weight:800;font-size:14px}
      .mobile-panel a.active,.mobile-panel a:hover{background:var(--accent-soft)}
      .mobile-panel .btn{margin-top:7px}
      section{padding:62px 0}
      h1{font-size:36px}
      h2{font-size:28px}
      .page-hero{padding:38px 0 43px}
      .page-hero-grid,.download-card,.compatibility-grid,.steps-wrap,.version-grid,.notice-grid{grid-template-columns:1fr}
      .app-symbol{min-height:220px;margin-top:6px}
      .download-card{padding:26px}
      .qr-box{min-height:145px}
      .section-heading{display:block;margin-bottom:25px}
      .section-desc{margin-top:12px}
      .compat-row{grid-template-columns:105px 1fr}
      .compat-state{grid-column:2}
      .version-item{grid-template-columns:90px 1fr}
      .version-item .text-link{grid-column:2}
      .footer-top{grid-template-columns:1fr 1fr}
      .footer-brand{grid-column:span 2}
    }
    @media (max-width:520px){
      body{font-size:15px}
      .container{width:calc(100% - 36px)}
      .brand-mark{width:33px;height:38px;font-size:20px}
      .brand-text strong{font-size:13px}
      .brand-text small{font-size:9px}
      h1{font-size:31px}
      h2{font-size:25px}
      .hero-intro{font-size:15px}
      .page-hero:before{right:-150px}
      .download-card{padding:22px}
      .download-card .btn{width:100%;margin-bottom:9px}
      .compat-row{grid-template-columns:1fr;gap:5px}
      .compat-state{grid-column:auto;justify-self:start}
      .download-step{grid-template-columns:48px 1fr;gap:13px}
      .download-step:not(:last-child):before{left:20px}
      .step-number{width:41px;height:41px}
      .version-item{grid-template-columns:1fr;gap:5px}
      .version-item .text-link{grid-column:auto;margin-top:4px}
      .notice-main,.notice-point{padding:22px}
      .faq-question{font-size:15px;gap:10px}
      .faq-answer{padding-left:0;padding-right:0;font-size:14px}
      .footer-top{grid-template-columns:1fr;gap:26px}
      .footer-brand{grid-column:auto}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-bottom:5px}
    }

/* roulang page: category4 */
:root{
      --ink:#173c38;--ink-deep:#102a27;--accent:#4f9b84;--accent-soft:#dcece5;
      --terra:#c66d45;--paper:#f7f5f0;--white:#fffefa;--line:#d8e1dc;
      --muted:#667671;--text:#263633;--soft:#eef3ef;--danger:#b35e40;
      --radius:18px;--radius-sm:12px;--shadow:0 14px 35px rgba(16,42,39,.08);
      --shadow-hover:0 18px 42px rgba(16,42,39,.15);--container:1200px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(79,155,132,.35);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(247,245,240,.94);border-bottom:1px solid rgba(216,225,220,.82);backdrop-filter:blur(12px)}
    .header-main{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:235px}
    .brand-mark{width:37px;height:42px;background:var(--ink);color:#fff;display:grid;place-items:center;border-radius:11px 11px 11px 3px;font-size:23px;font-weight:800;line-height:1;box-shadow:inset 0 -5px 0 rgba(255,255,255,.12)}
    .brand-text{display:flex;flex-direction:column;line-height:1.2}
    .brand-text strong{font-size:16px;letter-spacing:.02em;color:var(--ink)}
    .brand-text small{margin-top:4px;color:var(--muted);font-size:11px;letter-spacing:.07em}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:9px 12px;border-radius:9px;font-size:14px;font-weight:700;color:#44534f}
    .main-nav a:hover,.main-nav a.active{background:var(--accent-soft);color:var(--ink)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{min-height:46px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:800;line-height:1;white-space:nowrap}
    .btn-primary{color:#fff;background:var(--ink);box-shadow:0 8px 20px rgba(23,60,56,.16)}
    .btn-primary:hover{background:#0d2f2b;transform:translateY(-2px);box-shadow:0 13px 24px rgba(23,60,56,.24)}
    .btn-secondary{background:var(--white);color:var(--ink);border-color:#bfcfc8}
    .btn-secondary:hover{background:var(--accent-soft);border-color:var(--accent)}
    .menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink);font-size:19px}
    section{padding:82px 0}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 11px;color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--terra)}
    h1,h2,h3,p{margin-top:0}
    h1{font-size:48px;line-height:1.25;letter-spacing:-.03em;color:var(--ink);margin-bottom:18px}
    h2{font-size:31px;line-height:1.35;color:var(--ink);margin-bottom:12px}
    h3{font-size:19px;line-height:1.45;color:var(--ink)}
    .section-heading{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}
    .section-heading p{max-width:570px;margin:0;color:var(--muted);font-size:15px}
    .page-hero{position:relative;overflow:hidden;padding:58px 0 62px;background:linear-gradient(115deg,#f7f5f0 8%,#eaf1ec 100%);border-bottom:1px solid var(--line)}
    .page-hero:after{content:"";position:absolute;width:380px;height:380px;border:1px solid rgba(79,155,132,.2);right:-70px;top:-150px;border-radius:48px;transform:rotate(28deg)}
    .page-hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.15fr .85fr;gap:65px;align-items:center}
    .breadcrumb{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;color:var(--muted);font-size:13px}
    .breadcrumb span:last-child{color:var(--ink);font-weight:700}
    .hero-copy p{max-width:660px;margin-bottom:24px;color:#50615c;font-size:17px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px}
    .hero-meta span{padding:6px 11px;border:1px solid var(--line);border-radius:999px;background:rgba(255,254,250,.72);color:#52635e;font-size:12px}
    .support-stamp{padding:28px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);box-shadow:var(--shadow);position:relative;overflow:hidden}
    .support-stamp:after{content:"01";position:absolute;right:15px;bottom:-44px;color:rgba(79,155,132,.1);font-size:140px;font-weight:800;line-height:1}
    .stamp-icon{width:52px;height:52px;display:grid;place-items:center;border-radius:15px;background:var(--accent-soft);color:var(--ink);font-size:25px;font-weight:800}
    .support-stamp h2{margin:18px 0 8px;font-size:24px}
    .support-stamp p{position:relative;z-index:1;margin:0;color:var(--muted);font-size:14px}
    .topic-grid{display:grid;grid-template-columns:1.15fr .85fr .85fr;grid-template-rows:185px 185px;gap:16px}
    .topic-card{position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:space-between;padding:25px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}
    .topic-card:hover{transform:translateY(-4px);border-color:var(--accent);box-shadow:var(--shadow-hover)}
    .topic-card.large{grid-row:span 2;background:var(--ink);color:#fff}
    .topic-card.large h3{color:#fff;font-size:26px}
    .topic-card.large p{color:#c5d8d1}
    .topic-card.feedback{grid-column:2 / span 2;background:#f6e9e2}
    .topic-card h3{margin:0 0 6px}
    .topic-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}
    .topic-arrow{font-size:22px;color:var(--accent);font-weight:700}
    .topic-card.large .topic-arrow{color:#b5d9ca}
    .faq-area{background:var(--soft)}
    .faq-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:60px;align-items:start}
    .faq-layout .intro{position:sticky;top:108px}
    .faq-layout .intro p{color:var(--muted);margin-bottom:22px}
    .faq-list{border-top:1px solid var(--line)}
    .faq-item{border-bottom:1px solid var(--line);background:rgba(255,254,250,.65)}
    .faq-question{width:100%;min-height:66px;padding:17px 0;display:flex;align-items:center;gap:15px;border:0;background:transparent;text-align:left;color:var(--ink);font-weight:800}
    .faq-no{color:var(--terra);font-size:13px;letter-spacing:.06em}
    .faq-question span:nth-child(2){flex:1}
    .faq-symbol{width:25px;height:25px;display:grid;place-items:center;border-radius:50%;background:var(--accent-soft);font-size:18px;line-height:1;font-weight:400}
    .faq-answer{display:none;padding:0 42px 21px;color:var(--muted);font-size:15px;line-height:1.8}
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-symbol{background:var(--ink);color:#fff}
    .more-line{display:flex;justify-content:flex-end;margin-top:22px}
    .more-link{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-size:14px;font-weight:800;border-bottom:1px solid var(--accent)}
    .more-link:hover{color:var(--accent)}
    .process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;position:relative}
    .process-grid:before{content:"";position:absolute;height:1px;background:var(--line);left:12%;right:12%;top:31px}
    .process-step{position:relative;z-index:1}
    .process-number{width:62px;height:62px;display:grid;place-items:center;margin-bottom:18px;border:1px solid var(--line);border-radius:18px;background:var(--white);color:var(--terra);font-size:19px;font-weight:800}
    .process-step h3{margin-bottom:7px}
    .process-step p{margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .security-section{padding:72px 0;background:var(--ink-deep);color:#e9f2ed}
    .security-section h2{color:#fff}
    .security-section .section-heading p{color:#b8cbc3}
    .security-card{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.15);border-radius:var(--radius);overflow:hidden}
    .security-item{padding:26px 28px;background:rgba(255,255,255,.04)}
    .security-item strong{display:block;margin-bottom:7px;color:#fff;font-size:17px}
    .security-item p{margin:0;color:#bed0c7;font-size:14px;line-height:1.75}
    .contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:26px;align-items:start}
    .contact-panel{padding:31px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white)}
    .contact-panel h2{font-size:26px}
    .contact-panel>p{color:var(--muted);font-size:15px}
    .contact-list{display:grid;gap:0;margin-top:24px}
    .contact-list div{padding:16px 0;border-top:1px solid var(--line)}
    .contact-list span{display:block;margin-bottom:3px;color:var(--muted);font-size:12px}
    .contact-list strong{font-size:15px;color:var(--ink)}
    .feedback-form{padding:31px;border-radius:var(--radius);background:#edf3ef;border:1px solid #d2dfd7}
    .feedback-form h2{font-size:26px}
    .form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}
    .field{margin-bottom:16px}
    .field label{display:block;margin-bottom:7px;color:var(--ink);font-size:14px;font-weight:800}
    .required{color:var(--terra)}
    .field input,.field select,.field textarea{width:100%;min-height:48px;padding:11px 13px;border:1px solid #bdcec5;border-radius:10px;background:var(--white);color:var(--text);transition:border-color .2s,box-shadow .2s}
    .field textarea{min-height:126px;resize:vertical}
    .field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(79,155,132,.15);outline:none}
    .form-note{margin:0 0 17px;color:var(--muted);font-size:12px;line-height:1.65}
    .form-success{display:none;margin-top:14px;padding:10px 13px;border-radius:9px;background:var(--accent-soft);color:var(--ink);font-size:14px;font-weight:700}
    .closing{padding:70px 0;background:#dcece5}
    .closing-wrap{display:flex;justify-content:space-between;align-items:center;gap:28px}
    .closing h2{margin-bottom:7px}
    .closing p{margin:0;color:#50625c}
    .site-footer{background:var(--ink-deep);color:#d5e2dc;padding:58px 0 22px}
    .footer-top{display:grid;grid-template-columns:1.35fr .72fr .93fr;gap:55px;padding-bottom:42px}
    .footer-brand .brand{margin-bottom:17px}
    .site-footer .brand-mark{background:#dcece5;color:var(--ink)}
    .site-footer .brand-text strong{color:#fff}
    .site-footer .brand-text small{color:#9db4aa}
    .footer-brand p,.footer-col p{margin:0;color:#a9beb5;font-size:13px;line-height:1.8}
    .footer-col h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer-col a{display:block;margin:7px 0;color:#b9cdc4;font-size:13px}
    .footer-col a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;border-top:1px solid rgba(255,255,255,.14);color:#94aaa0;font-size:12px}
    @media(max-width:1024px){
      .main-nav{display:none}.menu-btn{display:grid;place-items:center}
      .page-hero-grid,.faq-layout,.contact-grid{grid-template-columns:1fr;gap:34px}
      .faq-layout .intro{position:static}
      .topic-grid{grid-template-columns:1fr 1fr;grid-template-rows:auto}
      .topic-card.large{grid-row:span 2}.topic-card.feedback{grid-column:auto}
      .process-grid{grid-template-columns:repeat(2,1fr);row-gap:35px}.process-grid:before{display:none}
    }
    @media(max-width:768px){
      .container{width:min(100% - 40px,var(--container))}
      .header-main{height:70px;gap:12px}.brand{min-width:0}.brand-text strong{font-size:14px}.brand-text small{font-size:10px}
      .header-actions .btn{display:none}
      section{padding:60px 0}h1{font-size:34px}h2{font-size:27px}
      .page-hero{padding:42px 0 48px}.support-stamp{padding:24px}
      .section-heading{display:block;margin-bottom:26px}.section-heading p{margin-top:10px}
      .security-card{grid-template-columns:1fr}.footer-top{grid-template-columns:1fr 1fr;gap:32px}.footer-brand{grid-column:span 2}
      .closing-wrap{display:block}.closing-wrap .btn{margin-top:20px}
    }
    @media(max-width:520px){
      body{font-size:15px}.container{width:calc(100% - 36px)}
      .brand-mark{width:34px;height:38px;font-size:20px}.brand-text small{display:none}
      .topic-grid{grid-template-columns:1fr}.topic-card.large{grid-row:auto;min-height:210px}.topic-card.feedback{grid-column:auto}
      .process-grid{grid-template-columns:1fr}.process-number{margin-bottom:12px}
      .form-row{grid-template-columns:1fr}.contact-panel,.feedback-form{padding:24px}
      .footer-top{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin:4px 0}
      .faq-answer{padding-left:30px}.hero-meta span{font-size:11px}
    }

/* roulang page: category3 */
:root{
      --ink:#173c38;--ink-deep:#102a27;--accent:#4f9b84;--accent-soft:#dcece5;
      --terra:#c66d45;--paper:#f7f5f0;--white:#fffefa;--line:#d8e1dc;
      --muted:#667671;--text:#263633;--soft:#eef3ef;--danger:#b35e40;
      --radius:18px;--radius-sm:12px;--shadow:0 14px 35px rgba(16,42,39,.08);
      --shadow-hover:0 18px 42px rgba(16,42,39,.15);--container:1200px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--text);font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;font-size:16px;line-height:1.8}
    a{color:inherit;text-decoration:none;transition:color .2s ease,background .2s ease,transform .2s ease,border-color .2s ease,box-shadow .2s ease}
    img{display:block;max-width:100%}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(79,155,132,.35);outline-offset:3px}
    .container{width:min(var(--container),calc(100% - 64px));margin:0 auto}
    .site-header{position:sticky;top:0;z-index:30;background:rgba(247,245,240,.95);border-bottom:1px solid rgba(216,225,220,.82);backdrop-filter:blur(12px)}
    .header-main{height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand{display:flex;align-items:center;gap:11px;min-width:235px}
    .brand-mark{width:37px;height:42px;background:var(--ink);color:#fff;display:grid;place-items:center;border-radius:11px 11px 11px 3px;font-size:23px;font-weight:800;line-height:1;box-shadow:inset 0 -5px 0 rgba(255,255,255,.12)}
    .brand-text{display:flex;flex-direction:column;line-height:1.2}
    .brand-text strong{font-size:16px;letter-spacing:.02em;color:var(--ink)}
    .brand-text small{margin-top:4px;color:var(--muted);font-size:11px;letter-spacing:.07em}
    .main-nav{display:flex;align-items:center;gap:4px}
    .main-nav a{padding:9px 12px;border-radius:9px;font-size:14px;font-weight:700;color:#44534f}
    .main-nav a:hover,.main-nav a.active{background:var(--accent-soft);color:var(--ink)}
    .header-actions{display:flex;align-items:center;gap:10px}
    .btn{min-height:46px;padding:0 18px;display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:11px;font-size:14px;font-weight:800;line-height:1;white-space:nowrap}
    .btn-primary{color:#fff;background:var(--ink);box-shadow:0 8px 20px rgba(23,60,56,.16)}
    .btn-primary:hover{background:#0d2f2b;transform:translateY(-2px);box-shadow:0 13px 24px rgba(23,60,56,.24)}
    .btn-secondary{background:var(--white);color:var(--ink);border-color:#bfcfc8}
    .btn-secondary:hover{background:var(--accent-soft);border-color:var(--accent)}
    .menu-btn{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:10px;background:var(--white);color:var(--ink);font-size:21px}
    .utility-bar{border-top:1px solid rgba(216,225,220,.7);background:#eef3ef;color:var(--muted);font-size:13px}
    .utility-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .utility-inner strong{color:var(--ink)}
    section{padding:82px 0}
    .guide-header{padding:68px 0 70px;background:linear-gradient(112deg,#f7f5f0 15%,#eaf2ed 100%);border-bottom:1px solid var(--line)}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 12px;color:var(--accent);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--terra)}
    h1,h2,h3,p{margin-top:0}
    h1{max-width:760px;margin-bottom:18px;color:var(--ink-deep);font-size:52px;line-height:1.2;letter-spacing:-.04em;font-weight:850}
    h2{color:var(--ink-deep);font-size:32px;line-height:1.3;letter-spacing:-.02em;margin-bottom:13px}
    h3{color:var(--ink);font-size:20px;line-height:1.4;margin-bottom:10px}
    .lead{max-width:720px;color:#53645e;font-size:17px;line-height:1.9;margin-bottom:24px}
    .crumbs{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:14px;margin-bottom:30px}
    .crumbs a:hover{color:var(--accent)}
    .crumbs .current{color:var(--ink);font-weight:700}
    .header-meta{display:flex;flex-wrap:wrap;gap:10px}
    .tag{display:inline-flex;align-items:center;padding:6px 11px;border-radius:999px;background:var(--white);border:1px solid var(--line);color:var(--muted);font-size:12px;font-weight:700}
    .tag.terra{background:#f7e8df;border-color:#edd0c1;color:#9d5437}
    .section-heading{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:32px}
    .section-desc{max-width:530px;margin:0;color:var(--muted);font-size:15px}
    .path-section{background:var(--white)}
    .path-layout{display:grid;grid-template-columns:280px 1fr;gap:54px;align-items:start}
    .path-intro{padding:26px;border-radius:var(--radius);background:var(--ink);color:#eef8f3;position:sticky;top:120px}
    .path-intro h3{color:#fff;font-size:23px}
    .path-intro p{color:#c7d9d2;font-size:14px;margin-bottom:0}
    .path-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .path-item{display:grid;grid-template-columns:48px 1fr;gap:16px;padding:24px 22px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--paper);transition:.25s}
    .path-item:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-3px)}
    .step-number{width:42px;height:42px;border-radius:12px;background:var(--accent-soft);color:var(--ink);display:grid;place-items:center;font-weight:850}
    .path-item p{color:var(--muted);font-size:14px;line-height:1.7;margin:0}
    .guide-section{background:var(--paper)}
    .guide-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
    .guide-card{min-height:210px;padding:26px;border:1px solid var(--line);border-radius:var(--radius);background:var(--white);display:flex;flex-direction:column;justify-content:space-between}
    .guide-card:hover{border-color:var(--accent);box-shadow:var(--shadow-hover);transform:translateY(-4px)}
    .guide-card:nth-child(2){background:#e8f1eb}
    .guide-card:nth-child(3){background:#f8ebe3}
    .guide-card:nth-child(4){background:#edf1ed}
    .card-top{display:flex;align-items:center;justify-content:space-between;gap:15px}
    .card-index{font-size:13px;font-weight:850;color:var(--terra);letter-spacing:.08em}
    .guide-card p{max-width:440px;color:var(--muted);font-size:14px;line-height:1.75;margin-bottom:18px}
    .text-link{color:var(--ink);font-size:14px;font-weight:800}
    .text-link span{display:inline-block;margin-left:8px;color:var(--accent);transition:.2s}
    .text-link:hover{color:var(--accent)}
    .text-link:hover span{transform:translateX(4px)}
    .interface-section{background:#eef3ef}
    .interface-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:62px;align-items:center}
    .interface-board{padding:28px;border-radius:24px;background:var(--ink);color:#fff;box-shadow:var(--shadow)}
    .board-top{display:flex;align-items:center;gap:12px;padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.15)}
    .board-logo{width:38px;height:38px;border-radius:11px 11px 11px 3px;background:#fff;color:var(--ink);display:grid;place-items:center;font-weight:850;font-size:20px}
    .board-top strong{display:block;font-size:17px}
    .board-top small{color:#b8cec4;font-size:12px}
    .board-lines{display:grid;gap:13px;padding-top:24px}
    .board-line{display:grid;grid-template-columns:42px 1fr auto;align-items:center;gap:12px;padding:14px;border-radius:12px;background:rgba(255,255,255,.08)}
    .board-line b{width:34px;height:34px;border-radius:9px;background:var(--accent);display:grid;place-items:center;font-size:13px}
    .board-line strong{font-size:14px}
    .board-line small{display:block;color:#b8cec4;font-size:12px}
    .board-line em{font-style:normal;color:#d6a184;font-size:12px}
    .feature-points{display:grid;gap:20px;margin-top:28px}
    .feature-point{display:grid;grid-template-columns:34px 1fr;gap:14px}
    .feature-point>span{width:30px;height:30px;border:1px solid var(--accent);border-radius:9px;color:var(--accent);display:grid;place-items:center;font-weight:800}
    .feature-point h3{font-size:18px;margin-bottom:4px}
    .feature-point p{color:var(--muted);font-size:14px;margin:0}
    .check-section{background:var(--white)}
    .check-layout{display:grid;grid-template-columns:1fr .85fr;gap:65px}
    .check-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px;margin-top:24px}
    .check-list li{list-style:none;display:flex;gap:11px;padding:15px 16px;border-bottom:1px solid var(--line);color:#4d5e58;font-size:14px}
    .check-list li:before{content:"✓";color:var(--accent);font-weight:900}
    .notice-card{padding:28px;border:1px solid #ecd3c5;border-radius:var(--radius);background:#fbf0e9}
    .notice-card h3{color:#884a35}
    .notice-card p{color:#705c54;font-size:14px;margin-bottom:12px}
    .notice-card ul{padding-left:20px;margin:0;color:#705c54;font-size:14px}
    .trouble-section{background:var(--paper)}
    .trouble-table{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white)}
    .trouble-row{display:grid;grid-template-columns:1fr 1.25fr .7fr;gap:20px;padding:19px 24px;border-bottom:1px solid var(--line);align-items:center}
    .trouble-row:last-child{border-bottom:0}
    .trouble-row.header{background:var(--ink);color:#fff;font-size:13px;font-weight:800}
    .trouble-row:not(.header){font-size:14px}
    .trouble-row:not(.header) div:nth-child(2){color:var(--muted)}
    .trouble-row a{color:var(--accent);font-weight:800;font-size:13px}
    .feedback-section{background:var(--ink-deep);color:#eaf4ef}
    .feedback-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:70px;align-items:start}
    .feedback-section h2,.feedback-section h3{color:#fff}
    .feedback-section .section-desc,.feedback-section p{color:#b9cec5}
    .feedback-info{display:grid;gap:14px;margin-top:25px}
    .feedback-info div{padding:17px 18px;border:1px solid rgba(216,225,220,.18);border-radius:12px;background:rgba(255,255,255,.05)}
    .feedback-info strong{display:block;color:#fff;font-size:15px}
    .feedback-info span{color:#b9cec5;font-size:13px}
    .feedback-form{padding:28px;border-radius:var(--radius);background:var(--white);color:var(--text)}
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .form-field{display:flex;flex-direction:column;gap:6px}
    .form-field.full{grid-column:1/-1}
    .form-field label{font-size:13px;font-weight:800;color:var(--ink)}
    .form-field label i{color:var(--terra);font-style:normal}
    .form-field input,.form-field select,.form-field textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:#fbfcfa;padding:11px 13px;color:var(--text);font-size:14px}
    .form-field input,.form-field select{height:48px}
    .form-field textarea{min-height:120px;resize:vertical}
    .form-field input:focus,.form-field select:focus,.form-field textarea:focus{border-color:var(--accent);outline:3px solid rgba(79,155,132,.12)}
    .form-hint{color:var(--muted);font-size:12px;margin:4px 0 18px}
    .site-footer{padding:52px 0 22px;background:var(--ink);color:#d7e6df}
    .footer-top{display:grid;grid-template-columns:1.5fr .7fr 1fr;gap:60px;padding-bottom:38px;border-bottom:1px solid rgba(216,225,220,.16)}
    .footer-brand .brand-text strong{color:#fff}
    .footer-brand .brand-text small{color:#b8cec4}
    .footer-brand p{max-width:360px;color:#b8cec4;font-size:14px;margin:20px 0 0}
    .footer-col{display:flex;flex-direction:column;gap:8px}
    .footer-col h3{color:#fff;font-size:16px;margin-bottom:8px}
    .footer-col a,.footer-col p{color:#b8cec4;font-size:13px;margin:0}
    .footer-col a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding-top:20px;color:#9db6ad;font-size:12px}
    @media(max-width:1024px){
      .header-main{gap:12px}.main-nav a{padding:8px 8px;font-size:13px}
      .path-layout,.interface-layout,.check-layout,.feedback-layout{gap:34px}
      h1{font-size:44px}.container{width:min(var(--container),calc(100% - 48px))}
    }
    @media(max-width:768px){
      .container{width:calc(100% - 40px)}
      .header-main{height:70px}.main-nav{display:none;position:absolute;left:20px;right:20px;top:78px;padding:12px;background:var(--white);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}
      .main-nav.open{display:flex}.main-nav a{padding:12px 14px}
      .header-actions .btn{display:none}.menu-btn{display:block}
      .utility-inner{min-height:42px;font-size:12px}.utility-inner span{display:none}
      section{padding:62px 0}.guide-header{padding:48px 0 54px}h1{font-size:36px}
      .section-heading{display:block;margin-bottom:25px}.section-desc{margin-top:10px}
      .path-layout,.interface-layout,.check-layout,.feedback-layout{grid-template-columns:1fr}
      .path-intro{position:static}.path-list,.guide-grid,.check-list{grid-template-columns:1fr}
      .interface-layout{gap:30px}.trouble-row{grid-template-columns:1fr;gap:5px;padding:17px 18px}.trouble-row.header{display:none}
      .feedback-layout{gap:30px}.footer-top{grid-template-columns:1fr 1fr;gap:32px}.footer-brand{grid-column:1/-1}
    }
    @media(max-width:520px){
      .container{width:calc(100% - 36px)}.brand{min-width:0}.brand-text strong{font-size:14px}.brand-text small{font-size:10px}
      .guide-header .crumbs{margin-bottom:22px}.header-meta{gap:7px}.guide-card,.path-item{padding:21px}
      .form-grid{grid-template-columns:1fr}.form-field.full{grid-column:auto}.feedback-form{padding:20px}
      .footer-top{grid-template-columns:1fr}.footer-brand{grid-column:auto}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
    }