/* roulang page: index */
:root{
  --brand-900:#0E2F2A;
  --brand-700:#16544A;
  --brand-500:#1F7A66;
  --accent-500:#FF6A2B;
  --accent-400:#FF8A54;
  --lime-400:#C9F24D;
  --ink-900:#14181A;
  --ink-600:#5A615C;
  --ink-400:#8B938D;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E7E4DC;
  --success:#2E9E6B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,24,26,.05);
  --shadow-md:0 6px 18px rgba(14,47,42,.08);
  --shadow-lg:0 18px 44px rgba(14,47,42,.12);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter",ui-sans-serif,system-ui,sans-serif;
  --sp-1:8px;--sp-2:16px;--sp-3:24px;--sp-4:32px;--sp-5:48px;--sp-6:64px;--sp-7:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink-900);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;border:0}
a{color:var(--brand-500);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--brand-900)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;color:var(--ink-900);line-height:1.35}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 1.2em;padding-left:1.25em}
li{margin-bottom:.5em}
button{font-family:inherit}
input{font-family:inherit}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.grid-x{display:flex;flex-flow:row wrap}
.grid-x>.cell{flex:0 0 auto;min-width:0;width:100%}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
@media (min-width:640px){
  .grid-margin-x>.cell.medium-6{width:50%}
}
@media (min-width:1024px){
  .grid-margin-x>.cell.large-4{width:33.3333%}
  .grid-margin-x>.cell.large-5{width:41.6667%}
  .grid-margin-x>.cell.large-7{width:58.3333%}
  .grid-margin-x>.cell.large-6{width:50%}
  .grid-margin-x>.cell.large-12{width:100%}
}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(18,58,52,.08)}
.nav-inner{display:flex;align-items:center;height:72px;gap:20px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900)}
.brand:hover{color:var(--brand-900)}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:11px;background:rgba(31,122,102,.1);flex:0 0 38px}
.brand-text{font-size:19px;font-weight:800;letter-spacing:.4px;white-space:nowrap}
.nav-links{flex:1 1 auto;display:flex;justify-content:center;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-block;padding:8px 12px;
  font-size:15px;font-weight:500;color:var(--ink-600);border-radius:var(--r-sm);
}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--accent-500);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--brand-900)}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--brand-900);font-weight:600}
.nav-actions{flex:0 0 auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;width:240px;height:42px;
  padding:0 16px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--bg);transition:border-color .25s ease,box-shadow .25s ease,background .25s ease;
}
.nav-search:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(31,122,102,.15);background:#fff}
.nav-search svg{flex:0 0 16px;color:var(--ink-400)}
.nav-search input{
  border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-900);
}
.nav-search input::placeholder{color:var(--ink-400)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:#fff;cursor:pointer;padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;transition:transform .25s ease,opacity .25s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 抽屉 ---------- */
.nav-drawer{
  position:fixed;inset:0;z-index:200;background:rgba(14,47,42,.45);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.nav-drawer.is-open{opacity:1;visibility:visible}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:82vw;max-width:340px;
  background:#fff;padding:24px 20px;display:flex;flex-direction:column;
  transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;
}
.nav-drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:20px;line-height:1;color:var(--ink-600);cursor:pointer}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  display:flex;align-items:center;min-height:52px;font-size:16px;font-weight:500;
  color:var(--ink-600);border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-900);font-weight:700}
.drawer-cta{margin-top:24px;display:block}
.drawer-foot{margin-top:auto;padding-top:24px;font-size:13px;color:var(--ink-400);line-height:1.7}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-pill);
  padding:14px 28px;border:1px solid transparent;cursor:pointer;text-align:center;
  transition:transform .25s ease,background .25s ease,color .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--accent-500);color:#fff}
.btn-primary:hover{background:var(--accent-400);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0)}
.btn-secondary{background:var(--surface);color:var(--brand-700);border-color:var(--brand-700)}
.btn-secondary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-ghost:hover{background:#fff;color:var(--brand-900);transform:translateY(-2px)}
.btn-sm{padding:10px 20px;font-size:14px}
.btn-block{width:100%}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;
  background-image:linear-gradient(180deg,rgba(14,47,42,.52) 0%,rgba(14,47,42,.86) 100%),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero-inner{
  max-width:1200px;margin:0 auto;padding:88px 24px 72px;
  min-height:520px;display:flex;align-items:center;
}
.hero-copy{max-width:660px}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:rgba(201,242,77,.16);border:1px solid rgba(201,242,77,.38);
  font-size:13px;font-weight:600;color:var(--lime-400);letter-spacing:.4px;
  margin-bottom:22px;
}
.hero-tag .dot{width:7px;height:7px;border-radius:50%;background:var(--lime-400);box-shadow:0 0 0 4px rgba(201,242,77,.18)}
.hero h1{
  font-size:44px;line-height:1.22;font-weight:800;color:#fff;
  margin:0 0 20px;letter-spacing:.5px;
}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.86);margin:0;max-width:600px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-facts{
  display:flex;flex-wrap:wrap;margin-top:40px;padding-top:26px;
  border-top:1px solid rgba(255,255,255,.2);
}
.hero-fact{padding:0 26px;border-right:1px solid rgba(255,255,255,.2)}
.hero-fact:first-child{padding-left:0}
.hero-fact:last-child{border-right:0}
.hero-fact b{
  display:block;font-family:var(--font-num);font-size:21px;font-weight:700;
  color:var(--accent-400);font-variant-numeric:tabular-nums;line-height:1.4;
}
.hero-fact span{font-size:13px;color:rgba(255,255,255,.72)}

/* ---------- 板块通用 ---------- */
.section{padding:96px 0}
.section--white{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section--tight{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head-copy{max-width:760px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  color:var(--brand-500);letter-spacing:1.2px;margin-bottom:12px;
}
.eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--accent-500)}
.section h2,.section-title{font-size:30px;line-height:1.35;font-weight:700;margin:0 0 16px}
.section-lead{font-size:16px;line-height:1.9;color:var(--ink-600);max-width:780px;margin:0}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;
  color:var(--brand-500);margin-top:auto;
}
.link-arrow span{transition:transform .25s ease;display:inline-block}
.link-arrow:hover{color:var(--brand-900)}
.link-arrow:hover span{transform:translateX(4px)}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 品牌主张 ---------- */
.brand-story{display:flex;gap:56px;align-items:center}
.brand-story-copy{flex:1 1 54%}
.brand-story-media{flex:1 1 46%}
.brand-story-media img{border-radius:var(--r-lg);box-shadow:var(--shadow-lg);width:100%;object-fit:cover;aspect-ratio:16/11}
.brand-points{list-style:none;padding:0;margin:28px 0 0}
.brand-points li{
  position:relative;padding-left:26px;font-size:15px;color:var(--ink-600);margin-bottom:12px;
}
.brand-points li::before{
  content:"";position:absolute;left:0;top:12px;width:8px;height:8px;border-radius:2px;
  background:var(--brand-500);transform:rotate(45deg);
}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;margin-top:8px;scroll-margin-top:100px}
.timeline::before{
  content:"";position:absolute;left:27px;top:14px;bottom:26px;width:1px;background:var(--line);
}
.timeline-item{display:flex;gap:24px;padding-bottom:36px;position:relative}
.timeline-item:last-child{padding-bottom:0}
.timeline-num{
  flex:0 0 56px;width:56px;height:56px;border-radius:50%;
  background:var(--surface);border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:20px;font-weight:700;color:var(--brand-700);
  font-variant-numeric:tabular-nums;position:relative;z-index:1;
}
.timeline-body{padding-top:6px}
.timeline-body h3{font-size:20px;margin-bottom:10px}
.timeline-body p{font-size:15px;line-height:1.85;color:var(--ink-600);margin:0}
.timeline-side{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:32px;box-shadow:var(--shadow-sm);height:100%;
}
.timeline-side img{border-radius:var(--r-md);margin-bottom:20px;aspect-ratio:16/10;object-fit:cover;width:100%}
.timeline-side h3{font-size:18px;margin-bottom:10px}
.timeline-side p{font-size:14px;color:var(--ink-600);line-height:1.8;margin:0}

/* ---------- 卡片 ---------- */
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);overflow:hidden;height:100%;
  display:flex;flex-direction:column;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#DCD8CD}
.card-media{
  overflow:hidden;aspect-ratio:3/2;
  background:linear-gradient(135deg,rgba(31,122,102,.14),rgba(255,106,43,.1));
}
.card-media--wide{aspect-ratio:16/10}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-media img{transform:scale(1.04)}
.card-body{padding:20px;display:flex;flex-direction:column;flex:1 1 auto}
.card-body h3{font-size:18px;line-height:1.5;margin-bottom:10px}
.card-body h3 a{color:var(--ink-900)}
.card-body h3 a:hover{color:var(--brand-900)}
.card-text{font-size:14px;line-height:1.75;color:var(--ink-600);margin:0 0 18px}
.card--hero .card-body{padding:28px}
.card--hero .card-body h3{font-size:23px}
.card--hero .card-text{font-size:15px}
.card-stack{display:flex;flex-direction:column;gap:24px;height:100%}
.card-stack .card{flex:1 1 auto}
.card-stack .card .card-body{padding:18px}
.card-stack .card h3{font-size:17px}
.card-cell{margin-bottom:24px}

/* ---------- 徽章 / 元信息 ---------- */
.badge{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(31,122,102,.1);color:var(--brand-700);
  font-size:12px;font-weight:600;letter-spacing:.3px;line-height:1.6;
}
.badge--accent{background:rgba(255,106,43,.12);color:#C24A15}
.post-meta{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}
.post-time{font-family:var(--font-num);font-size:13px;color:var(--ink-400);font-variant-numeric:tabular-nums}
.post-title{font-size:18px;line-height:1.5;margin-bottom:10px}
.post-title a{
  color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-title a:hover{color:var(--brand-900)}
.post-summary{
  font-size:14px;line-height:1.75;color:var(--ink-600);margin:0 0 18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}

/* ---------- 数据条 ---------- */
.stats{display:flex;flex-wrap:wrap;gap:0;border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);overflow:hidden}
.stat{flex:1 1 200px;padding:32px 28px;border-right:1px solid var(--line);min-width:180px}
.stat:last-child{border-right:0}
.stat-num{
  font-family:var(--font-num);font-size:38px;font-weight:800;line-height:1;
  color:var(--accent-500);font-variant-numeric:tabular-nums;
}
.stat-label{margin-top:10px;font-size:14px;color:var(--ink-600)}
.logo-strip{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.logo-chip{
  flex:1 1 150px;min-width:140px;height:56px;border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface);display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:600;color:var(--ink-400);filter:grayscale(1);
  transition:filter .25s ease,color .25s ease,border-color .25s ease;
}
.logo-chip:hover{filter:grayscale(0);color:var(--brand-700);border-color:#D6E5DF}
.quotes{display:flex;flex-direction:column;gap:16px;margin-top:32px}
.quote{
  border-left:3px solid var(--accent-500);background:#FAF9F6;
  border-radius:0 var(--r-md) var(--r-md) 0;padding:20px 24px;
}
.quote p{font-size:15px;line-height:1.85;color:var(--ink-600);margin:0 0 10px}
.quote cite{font-style:normal;font-size:13px;color:var(--ink-400)}

/* ---------- FAQ ---------- */
.faq-list{margin-top:8px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item:hover{box-shadow:var(--shadow-sm)}
.faq-item.is-open{border-left:3px solid var(--accent-500);box-shadow:var(--shadow-sm)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;background:none;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.6;
}
.faq-icon{
  flex:0 0 28px;width:28px;height:28px;border-radius:50%;
  background:var(--bg);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:400;line-height:1;
  transition:transform .28s ease,background .28s ease,color .28s ease;
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent-500);color:#fff}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 24px 22px;font-size:15px;line-height:1.8;color:var(--ink-600)}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);border-radius:var(--r-lg);
  background:var(--surface);
}
.empty-icon{
  display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;
  border-radius:50%;background:rgba(31,122,102,.1);color:var(--brand-500);
  font-size:24px;margin-bottom:16px;
}
.empty-state p{font-size:15px;color:var(--ink-600);margin:0 0 20px}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-900);
  background-image:linear-gradient(120deg,rgba(14,47,42,.96),rgba(14,47,42,.86)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;background-position:center;
  border-radius:var(--r-lg);padding:48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-copy{max-width:520px}
.cta-copy h2{color:#fff;font-size:28px;margin-bottom:12px}
.cta-copy p{color:rgba(233,239,234,.82);font-size:15px;margin:0}
.cta-form{flex:0 1 460px;width:100%}
.cta-form-row{display:flex;gap:12px}
.cta-form input{
  flex:1 1 auto;height:48px;border-radius:var(--r-sm);border:1px solid transparent;
  padding:0 16px;font-size:15px;background:#fff;color:var(--ink-900);outline:none;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.cta-form input:focus{border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,106,43,.18)}
.cta-note{font-size:12px;color:rgba(233,239,234,.6);margin:12px 0 0;line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#E9EFEA;padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.1)}
.footer-brand-text{font-size:18px;font-weight:800;color:#fff;letter-spacing:.4px}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB3AC;margin:0;max-width:320px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;letter-spacing:.4px}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:#9FB3AC}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;color:#9FB3AC;line-height:1.85;margin:0 0 10px}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);
  padding:24px 0 32px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#9FB3AC;
}
.footer-bottom a{color:#9FB3AC}
.footer-bottom a:hover{color:#fff}

/* ---------- 回顶 ---------- */
.back-top{
  position:fixed;right:24px;bottom:24px;z-index:90;
  width:46px;height:46px;border-radius:50%;border:1px solid var(--line);
  background:#fff;color:var(--brand-700);cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease,transform .25s ease;
}
.back-top.is-visible{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-3px)}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .grid-container{padding-left:20px;padding-right:20px}
  .nav-links,.nav-search{display:none}
  .nav-toggle{display:inline-flex}
  .nav-cta{display:none}
  .section{padding:72px 0}
  .section--tight{padding:56px 0}
  .hero-inner{padding:72px 20px 60px;min-height:460px}
  .hero h1{font-size:34px}
  .brand-story{flex-direction:column;gap:32px}
  .brand-story-media{width:100%}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:36px}
}
@media (max-width:768px){
  .section{padding:60px 0}
  .section h2,.section-title{font-size:24px}
  .hero h1{font-size:29px}
  .hero-sub{font-size:16px}
  .hero-facts{flex-direction:column;gap:14px}
  .hero-fact{padding:0;border-right:0}
  .timeline::before{left:21px}
  .timeline-num{flex:0 0 44px;width:44px;height:44px;font-size:17px}
  .timeline-item{gap:16px;padding-bottom:28px}
  .stat{flex:1 1 100%;border-right:0;border-bottom:1px solid var(--line);padding:24px}
  .stat:last-child{border-bottom:0}
  .cta-band{padding:28px 24px;border-radius:var(--r-md)}
  .cta-form-row{flex-direction:column}
  .cta-form-row .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;margin-top:36px}
  .site-footer{padding-top:52px}
}
@media (max-width:520px){
  .grid-container{padding-left:16px;padding-right:16px}
  .brand-text{font-size:15px;letter-spacing:0}
  .brand-mark{width:34px;height:34px;flex:0 0 34px}
  .hero h1{font-size:26px}
  .hero-actions .btn{width:100%}
  .section-head{margin-bottom:28px}
  .card-body{padding:16px}
  .back-top{right:16px;bottom:16px}
}
@media (min-width:1440px){
  .grid-container{padding-left:32px;padding-right:32px}
}

/* roulang page: article */
:root{
  --brand-900:#0E2F2A;
  --brand-700:#16544A;
  --brand-500:#1F7A66;
  --accent-500:#FF6A2B;
  --accent-400:#FF8A54;
  --lime-400:#C9F24D;
  --ink-900:#14181A;
  --ink-600:#5A615C;
  --ink-400:#8B938D;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E7E4DC;
  --success:#2E9E6B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,24,26,.05);
  --shadow-md:0 6px 18px rgba(14,47,42,.08);
  --shadow-lg:0 18px 44px rgba(14,47,42,.12);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter",ui-sans-serif,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink-900);
  font-family:var(--font-sans);font-size:16px;line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand-500);text-decoration:none;transition:color .25s ease,border-color .25s ease,background-color .25s ease;}
a:hover{color:var(--brand-900);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,h5,p{margin:0;}
button{font-family:inherit;}
input,button,textarea{font-family:inherit;font-size:inherit;}
::selection{background:rgba(255,106,43,.22);}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;margin-left:auto;margin-right:auto;}
.grid-x{margin-left:0;margin-right:0;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);border:1px solid transparent;
  padding:14px 28px;font-size:15px;font-weight:600;line-height:1.2;
  cursor:pointer;transition:all .25s ease;white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--accent-400);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:var(--surface);color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--brand-700);color:#fff;}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-text{display:inline-flex;align-items:center;gap:6px;background:none;padding:0;color:var(--brand-500);font-weight:600;font-size:15px;border:0;cursor:pointer;}
.btn-text svg{transition:transform .25s ease;}
.btn-text:hover{color:var(--brand-900);}
.btn-text:hover svg{transform:translateX(4px);}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(18,58,52,.08);}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:800;font-size:17px;letter-spacing:.2px;}
.brand:hover{color:var(--brand-900);}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:#EAF3EF;
  display:inline-flex;align-items:center;justify-content:center;flex:none;
}
.brand-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:26px;}
.nav-links a{
  position:relative;display:inline-block;padding:6px 0;font-size:15px;font-weight:500;color:var(--ink-600);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;border-radius:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;
}
.nav-links a:hover{color:var(--brand-900);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:14px;}
.nav-search{
  display:flex;align-items:center;gap:8px;width:240px;height:42px;padding:0 16px;
  background:#F4F6F3;border:1px solid transparent;border-radius:var(--r-pill);transition:all .25s ease;
}
.nav-search:focus-within{border-color:var(--brand-500);background:#fff;box-shadow:0 0 0 3px rgba(31,122,102,.15);}
.nav-search svg{flex:none;}
.nav-search input{border:0;background:transparent;outline:none;width:100%;font-size:14px;color:var(--ink-900);}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:var(--surface);
  border-radius:var(--r-sm);cursor:pointer;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);border-radius:2px;transition:all .25s ease;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,47,42,.45);z-index:110;opacity:0;pointer-events:none;transition:opacity .25s ease;
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:82vw;max-width:340px;background:var(--surface);
  z-index:120;transform:translateX(102%);transition:transform .28s ease;display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px 20px;border-bottom:1px solid var(--line);}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);background:var(--surface);border-radius:var(--r-sm);font-size:20px;line-height:1;color:var(--ink-600);cursor:pointer;}
.drawer-nav{padding:8px 0;}
.drawer-nav a{display:flex;align-items:center;min-height:52px;padding:0 20px;font-size:15px;font-weight:500;color:var(--ink-600);border-bottom:1px solid var(--line);}
.drawer-nav a:hover,.drawer-nav a.is-active{color:var(--brand-900);background:#F4F6F3;}
.drawer-body{padding:20px;display:flex;flex-direction:column;gap:14px;border-top:1px solid var(--line);}
.drawer-note{font-size:13px;color:var(--ink-400);line-height:1.7;}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--ink-400);}
.crumb a{color:var(--ink-400);}
.crumb a:hover{color:var(--brand-700);}
.crumb .sep{color:#C4C9C2;}
.crumb .current{color:var(--ink-600);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章 ---------- */
.article-wrap{padding:48px 0 72px;background:var(--bg);}
.article-panel{
  max-width:880px;margin:0 auto;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--shadow-sm);padding:44px 48px 40px;
}
.article-badge{
  display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:var(--r-pill);
  background:rgba(31,122,102,.10);color:var(--brand-700);font-size:13px;font-weight:600;line-height:1.6;
}
.article-title{
  margin-top:18px;font-size:36px;line-height:1.3;font-weight:800;letter-spacing:-.2px;color:var(--ink-900);
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:18px;padding-bottom:22px;border-bottom:1px solid var(--line);
  font-size:13px;color:var(--ink-400);line-height:1.7;
}
.article-meta .dot{color:#C9CEC8;}
.article-body{max-width:780px;margin:32px auto 0;position:relative;color:var(--ink-900);font-size:16px;line-height:1.9;}
.article-body::before{
  content:"";position:absolute;left:-42px;top:10px;bottom:10px;width:1px;background:var(--line);display:none;
}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  position:relative;margin:44px 0 16px;padding-left:18px;
  font-size:26px;line-height:1.4;font-weight:700;color:var(--brand-900);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:7px;width:4px;height:20px;border-radius:2px;background:var(--accent-500);
}
.article-body h3{margin:34px 0 14px;font-size:20px;line-height:1.5;font-weight:700;color:var(--ink-900);}
.article-body h4{margin:26px 0 12px;font-size:17px;font-weight:600;color:var(--ink-900);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:8px;height:8px;border-radius:2px;
  background:var(--brand-500);transform:rotate(45deg);
}
.article-body ol{counter-reset:ord;}
.article-body ol li{position:relative;padding-left:34px;margin-bottom:12px;counter-increment:ord;}
.article-body ol li::before{
  content:counter(ord);position:absolute;left:0;top:2px;width:22px;height:22px;border-radius:50%;
  background:rgba(31,122,102,.12);color:var(--brand-700);
  font-family:var(--font-num);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.article-body blockquote{
  margin:26px 0;padding:20px 22px;border-left:3px solid var(--brand-500);
  background:rgba(31,122,102,.04);border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-600);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--r-md);margin:24px auto;box-shadow:var(--shadow-sm);}
.article-body a{border-bottom:1px solid rgba(31,122,102,.35);}
.article-body a:hover{border-bottom-color:var(--brand-900);}
.article-body code{
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:14px;
  background:#F1F4F0;border:1px solid var(--line);border-radius:6px;padding:2px 6px;color:var(--brand-700);
}
.article-body pre{
  background:#0E2F2A;color:#E9EFEA;border-radius:var(--r-md);padding:20px;overflow-x:auto;margin:24px 0;
}
.article-body pre code{background:none;border:0;color:inherit;padding:0;}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;display:block;overflow-x:auto;
}
.article-body table thead th{
  background:var(--brand-900);color:#fff;font-weight:600;text-align:left;padding:12px 16px;white-space:nowrap;
}
.article-body table tbody td{padding:12px 16px;border-bottom:1px solid var(--line);color:var(--ink-600);}
.article-body table tbody tr:nth-child(even){background:#FAF9F6;}
.article-body table tbody tr:last-child td{border-bottom:0;}
.article-body figure{margin:26px 0;}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ink-400);margin-top:10px;}

.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;max-width:780px;margin:36px auto 0;padding-top:24px;border-top:1px solid var(--line);}
.tag-label{font-size:13px;color:var(--ink-400);}
.tag{
  display:inline-flex;align-items:center;padding:6px 14px;border-radius:var(--r-pill);
  background:#F4F6F3;border:1px solid var(--line);color:var(--ink-600);font-size:13px;
}
.tag:hover{background:var(--brand-700);border-color:var(--brand-700);color:#fff;}

.article-foot{max-width:780px;margin:24px auto 0;display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;}
.empty-state{
  max-width:780px;margin:36px auto;padding:56px 32px;text-align:center;
  background:#FAF9F6;border:1px dashed var(--line);border-radius:var(--r-md);
}
.empty-state .empty-icon{
  width:56px;height:56px;margin:0 auto 18px;border-radius:var(--r-md);
  background:rgba(31,122,102,.10);display:flex;align-items:center;justify-content:center;
}
.empty-state h3{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:10px;}
.empty-state p{color:var(--ink-600);font-size:15px;margin-bottom:22px;}

/* ---------- 相关推荐 ---------- */
.related{padding:0 0 88px;background:var(--bg);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px;flex-wrap:wrap;}
.section-head h2{font-size:30px;line-height:1.35;font-weight:700;color:var(--ink-900);}
.section-head p{margin-top:8px;font-size:15px;color:var(--ink-600);}
.card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--shadow-sm);transition:transform .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.card-thumb{position:relative;overflow:hidden;aspect-ratio:3/2;background:rgba(31,122,102,.10);}
.card-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.card:hover .card-thumb img{transform:scale(1.04);}
.card-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.card-meta{display:flex;align-items:center;gap:10px;margin-bottom:12px;flex-wrap:wrap;}
.badge{
  display:inline-flex;align-items:center;padding:4px 12px;border-radius:var(--r-pill);
  background:rgba(31,122,102,.10);color:var(--brand-700);font-size:12px;font-weight:600;
}
.card-time{font-size:13px;color:var(--ink-400);font-family:var(--font-num);font-variant-numeric:tabular-nums;}
.card-title{
  font-size:18px;line-height:1.5;font-weight:700;color:var(--ink-900);margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card:hover .card-title{color:var(--brand-900);}
.card-desc{
  font-size:14px;line-height:1.75;color:var(--ink-600);margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-link{margin-top:auto;}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 96px;background:var(--bg);}
.cta-inner{
  background:var(--brand-900);border-radius:var(--r-lg);padding:52px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-inner::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,77,.18),transparent 70%);
}
.cta-copy{max-width:560px;position:relative;z-index:1;}
.cta-copy h2{font-size:28px;line-height:1.4;font-weight:700;color:#fff;}
.cta-copy p{margin-top:12px;font-size:15px;line-height:1.8;color:#C6D6D0;}
.cta-form{display:flex;gap:12px;flex-wrap:wrap;position:relative;z-index:1;}
.cta-form input{
  height:48px;min-width:250px;padding:0 18px;border-radius:var(--r-sm);border:1px solid transparent;
  background:#fff;color:var(--ink-900);outline:none;transition:all .25s ease;
}
.cta-form input:focus{border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,106,43,.22);}
.cta-note{width:100%;font-size:12px;color:#8FA8A1;margin-top:4px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#E9EFEA;padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.08);}
.footer-brand-text{font-size:17px;font-weight:800;color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB3AC;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
.footer-col ul li{margin-bottom:10px;}
.footer-col ul li a{font-size:14px;color:#9FB3AC;}
.footer-col ul li a:hover{color:#fff;}
.footer-col p{font-size:14px;color:#9FB3AC;line-height:1.9;margin-bottom:8px;}
.footer-bottom{
  margin-top:52px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FA8A1;
}
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:var(--surface);border:1px solid var(--line);color:var(--brand-700);
  box-shadow:var(--shadow-md);cursor:pointer;display:none;align-items:center;justify-content:center;
  z-index:90;transition:all .25s ease;
}
.to-top.is-show{display:flex;}
.to-top:hover{background:var(--brand-700);color:#fff;border-color:var(--brand-700);transform:translateY(-2px);}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  .article-body::before{display:block;}
}
@media (max-width:1024px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .nav-links,.nav-search{display:none;}
  .nav-toggle{display:flex;}
  .article-panel{padding:36px 32px 32px;}
  .article-title{font-size:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .cta-inner{padding:40px 32px;}
}
@media (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .header-inner{height:60px;}
  .brand-text{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;vertical-align:middle;}
  .article-wrap{padding:28px 0 48px;}
  .article-panel{padding:26px 20px 24px;border-radius:var(--r-md);}
  .article-title{font-size:26px;}
  .article-body{font-size:16px;line-height:1.85;margin-top:24px;}
  .article-body h2{font-size:22px;margin:34px 0 14px;}
  .article-body h3{font-size:18px;}
  .related{padding-bottom:64px;}
  .section-head h2{font-size:24px;}
  .cta-band{padding-bottom:64px;}
  .cta-inner{padding:32px 22px;border-radius:var(--r-md);}
  .cta-copy h2{font-size:22px;}
  .cta-form{width:100%;}
  .cta-form input{width:100%;min-width:0;}
  .cta-form .btn{width:100%;}
  .site-footer{padding:52px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;}
  .to-top{right:16px;bottom:18px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0E2F2A;
  --brand-700:#16544A;
  --brand-500:#1F7A66;
  --accent-500:#FF6A2B;
  --accent-400:#FF8A54;
  --lime-400:#C9F24D;
  --ink-900:#14181A;
  --ink-600:#5A615C;
  --ink-400:#8B938D;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E7E4DC;
  --success:#2E9E6B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,24,26,.05);
  --shadow-md:0 6px 18px rgba(14,47,42,.08);
  --shadow-lg:0 18px 44px rgba(14,47,42,.12);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter",ui-sans-serif,sans-serif;
}

/* 基础 reset */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;padding:0;
  font-family:var(--font-sans);
  font-size:16px;line-height:1.9;
  color:var(--ink-900);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;font-family:var(--font-sans);color:var(--ink-900);line-height:1.35;font-weight:700}
p{margin:0 0 1.2em}
img{max-width:100%;height:auto;display:block}
a{color:var(--brand-500);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-900)}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea,select{font-family:inherit;font-size:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* 容器与栅格兜底 */
.grid-container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
.grid-x{display:flex;flex-wrap:wrap;margin-left:-14px;margin-right:-14px}
.grid-x>.cell{padding-left:14px;padding-right:14px;min-width:0}
.small-12{flex:0 0 100%;max-width:100%}
@media screen and (min-width:640px){
  .medium-6{flex:0 0 50%;max-width:50%}
}
@media screen and (min-width:1024px){
  .large-4{flex:0 0 33.3333%;max-width:33.3333%}
  .large-6{flex:0 0 50%;max-width:50%}
}

/* 排版层级 */
.h1{font-size:40px;line-height:1.25;font-weight:800}
.section-title{position:relative;font-size:30px;font-weight:700;padding-left:18px;margin-bottom:16px}
.section-title::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;background:var(--accent-500)}
.section-lead{max-width:800px;color:var(--ink-600);font-size:16px;line-height:1.9;margin-bottom:40px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:12px 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1.2;
  transition:transform .25s ease,background-color .25s ease,color .25s ease,box-shadow .25s ease,border-color .25s ease;
  text-align:center;white-space:nowrap;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{background:var(--accent-400);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn-ghost{background:var(--surface);color:var(--brand-700);border:1px solid var(--brand-700)}
.btn-ghost:hover{background:var(--brand-700);color:#fff}
.btn-text{color:var(--brand-500);font-weight:600;padding:8px 0;min-height:44px}
.btn-text .arrow{transition:transform .25s ease}
.btn-text:hover{color:var(--brand-900)}
.btn-text:hover .arrow{transform:translateX(4px)}

/* 顶部导航 */
.site-header{position:sticky;top:0;z-index:100;background:var(--surface);border-bottom:1px solid var(--line);transition:box-shadow .25s ease}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(18,58,52,.08)}
.header-inner{display:flex;align-items:center;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:10px;background:var(--brand-900)}
.brand-text{font-size:17px;font-weight:800;color:var(--brand-900);letter-spacing:.2px;white-space:nowrap}
.nav-links{display:flex;align-items:center;gap:26px;margin:0 auto}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--ink-600);padding:10px 2px;white-space:nowrap}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:2px;background:var(--accent-500);transform:scaleX(0);transform-origin:center;transition:transform .25s ease}
.nav-links a:hover{color:var(--brand-900)}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--brand-900);font-weight:600}
.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-search{position:relative;display:flex;align-items:center;width:240px}
.nav-search svg{position:absolute;left:14px;width:16px;height:16px;stroke:var(--ink-400);pointer-events:none}
.nav-search input{
  width:100%;height:42px;padding:0 16px 0 40px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--bg);color:var(--ink-900);font-size:14px;
  transition:border-color .25s ease,box-shadow .25s ease,background-color .25s ease;
}
.nav-search input::placeholder{color:var(--ink-400)}
.nav-search input:focus{outline:none;background:var(--surface);border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(31,122,102,.15)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);align-items:center;justify-content:center}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-900)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* 移动抽屉 */
.drawer{position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;background:var(--surface);z-index:200;
  transform:translateX(102%);transition:transform .3s ease;padding:22px 20px 32px;overflow-y:auto;box-shadow:var(--shadow-lg)}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-close{width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--surface);color:var(--brand-900);font-size:20px;line-height:1}
.drawer-nav a{display:flex;align-items:center;height:52px;font-size:16px;color:var(--ink-900);border-bottom:1px solid var(--line)}
.drawer-nav a.is-active{color:var(--accent-500);font-weight:600}
.drawer-search{position:relative;display:flex;align-items:center;margin:22px 0 16px}
.drawer-search input{width:100%;height:46px;padding:0 16px 0 40px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--bg);font-size:15px}
.drawer-search svg{position:absolute;left:14px;width:16px;height:16px;stroke:var(--ink-400)}
.drawer .btn{width:100%}
.drawer-note{margin-top:20px;font-size:13px;line-height:1.7;color:var(--ink-400)}
.drawer-mask{position:fixed;inset:0;background:rgba(14,47,42,.45);z-index:150;opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* 顶部横幅 */
.cat-banner{
  position:relative;color:#fff;padding:52px 0 56px;min-height:280px;display:flex;align-items:center;
  background-image:linear-gradient(180deg,rgba(14,47,42,.58) 0%,rgba(14,47,42,.86) 100%),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center center;background-repeat:no-repeat;
}
.cat-banner .grid-container{width:100%}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.72);margin-bottom:18px}
.breadcrumb a{color:rgba(255,255,255,.82)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.5)}
.cat-banner h1{font-size:38px;line-height:1.25;font-weight:800;color:#fff;max-width:820px;margin-bottom:16px}
.banner-sub{max-width:720px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.86);margin:0}

/* 关键信息条 */
.facts-bar{background:var(--surface);border-bottom:1px solid var(--line)}
.facts{display:flex;flex-wrap:wrap;padding:26px 0}
.facts li{flex:1 1 200px;padding:0 26px;border-left:1px solid var(--line)}
.facts li:first-child{padding-left:0;border-left:0}
.fact-label{display:block;font-size:13px;color:var(--ink-400);letter-spacing:.4px}
.fact-value{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:20px;font-weight:700;color:var(--brand-900);margin-top:4px}

/* 板块 */
.section{padding:96px 0}
.section-alt{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.split{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:start}

/* 时间轴 */
.timeline{position:relative;padding-left:46px;margin-top:8px}
.timeline::before{content:"";position:absolute;left:15px;top:12px;bottom:16px;width:2px;background:linear-gradient(180deg,var(--brand-500) 0%,rgba(31,122,102,.12) 100%)}
.step{position:relative;padding-bottom:44px}
.step:last-child{padding-bottom:0}
.step-index{
  position:absolute;left:-46px;top:2px;width:32px;height:32px;border-radius:50%;
  background:var(--accent-500);color:#fff;font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:14px;font-weight:700;display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 6px rgba(255,106,43,.12);
}
.step h3{font-size:22px;font-weight:700;margin-bottom:10px}
.step p{color:var(--ink-600);font-size:16px;line-height:1.9;margin-bottom:0}
.step-note{display:inline-flex;align-items:center;gap:8px;margin-top:12px;font-size:14px;color:var(--brand-700);background:rgba(31,122,102,.08);border-radius:var(--r-pill);padding:6px 14px}
.step-note .dot{width:8px;height:8px;border-radius:50%;background:var(--lime-400);flex:0 0 auto}

/* 侧栏面板 */
.sticky-panel{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.figure-card{margin:0;border-radius:var(--r-md);overflow:hidden;border:1px solid var(--line);background:var(--surface);box-shadow:var(--shadow-sm)}
.figure-card img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .35s ease}
.figure-card:hover img{transform:scale(1.04)}
.figure-cap{padding:14px 18px;font-size:13px;color:var(--ink-400);background:var(--surface)}
.tip-card{
  display:flex;gap:14px;padding:22px;border-radius:var(--r-md);
  background:rgba(31,122,102,.06);border:1px solid var(--line);border-left:4px solid var(--brand-500);
}
.tip-icon{flex:0 0 auto;width:34px;height:34px;border-radius:10px;background:var(--brand-900);display:flex;align-items:center;justify-content:center}
.tip-card h3{font-size:17px;font-weight:700;margin-bottom:10px}
.tip-list li{position:relative;padding-left:16px;font-size:14px;line-height:1.75;color:var(--ink-600);margin-bottom:8px}
.tip-list li:last-child{margin-bottom:0}
.tip-list li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--accent-500)}

/* CTA 条 */
.cta-band{background:var(--brand-900);border-radius:var(--r-lg);color:#fff;padding:48px;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;align-items:center}
.cta-band h2{font-size:28px;color:#fff;line-height:1.4;margin-bottom:14px}
.cta-band p{color:#C6D6D0;font-size:15px;line-height:1.85;margin-bottom:0}
.cta-form{display:flex;flex-wrap:wrap;gap:12px}
.cta-form input{
  flex:1 1 220px;height:48px;min-width:0;padding:0 18px;border-radius:var(--r-sm);
  border:1px solid rgba(255,255,255,.22);background:#fff;color:var(--ink-900);font-size:15px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.cta-form input::placeholder{color:var(--ink-400)}
.cta-form input:focus{outline:none;border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,106,43,.22)}
.cta-form .btn{flex:0 0 auto}
.form-note{flex:1 1 100%;font-size:12.5px;line-height:1.7;color:#9FB3AC;margin:0}

/* FAQ */
.faq-list{margin-top:8px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease}
.faq-item:hover{box-shadow:var(--shadow-sm)}
.faq-item.is-open{border-color:rgba(31,122,102,.35);box-shadow:inset 3px 0 0 var(--accent-500),var(--shadow-sm)}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 22px;text-align:left;font-size:17px;font-weight:600;color:var(--ink-900);background:none}
.faq-icon{flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;font-size:17px;line-height:1;color:var(--brand-700);transition:transform .28s ease,background-color .28s ease,color .28s ease,border-color .28s ease}
.faq-item.is-open .faq-icon{background:var(--accent-500);border-color:var(--accent-500);color:#fff;transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-600)}
.faq-group-title{font-size:15px;font-weight:600;color:var(--brand-700);letter-spacing:.4px;margin:32px 0 14px}
.faq-group-title:first-of-type{margin-top:8px}

/* 下一步入口 */
.next-links{display:flex;flex-wrap:wrap;gap:32px;align-items:center;justify-content:space-between;padding-top:8px}
.next-links .group{display:flex;flex-wrap:wrap;gap:26px}

/* 页脚 */
.site-footer{background:var(--brand-900);color:#E9EFEA;padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:rgba(255,255,255,.08)}
.footer-brand-text{font-size:17px;font-weight:800;color:#fff}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB3AC;margin:0;max-width:340px}
.footer-col h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:#9FB3AC}
.footer-col a:hover{color:#fff}
.footer-col p{font-size:14px;line-height:1.8;color:#9FB3AC;margin:0 0 8px}
.footer-bottom{margin-top:56px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;font-size:13px;color:#9FB3AC}

/* 回顶 */
.back-top{position:fixed;right:22px;bottom:26px;width:44px;height:44px;border-radius:50%;background:var(--brand-900);color:#fff;display:flex;align-items:center;justify-content:center;z-index:120;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .25s ease;box-shadow:var(--shadow-md)}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--brand-700)}

/* 响应式 */
@media screen and (max-width:1024px){
  .grid-container{padding-left:20px;padding-right:20px}
  .nav-links{display:none}
  .nav-search{display:none}
  .header-actions .btn-primary{display:none}
  .nav-toggle{display:flex}
  .header-inner{height:64px}
  .section{padding:72px 0}
  .split{grid-template-columns:minmax(0,1fr);gap:40px}
  .sticky-panel{position:static}
  .cat-banner{padding:44px 0 48px}
  .cat-banner h1{font-size:32px}
  .cta-band{grid-template-columns:1fr;gap:28px;padding:40px 32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-bottom{margin-top:44px}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .cat-banner{min-height:180px;padding:34px 0 38px}
  .cat-banner h1{font-size:26px;line-height:1.3}
  .banner-sub{font-size:15px;line-height:1.8}
  .section-title{font-size:22px;padding-left:14px}
  .section-lead{margin-bottom:28px;font-size:15px}
  .facts{padding:18px 0}
  .facts li{flex:1 1 100%;padding:12px 0;border-left:0;border-top:1px dashed var(--line)}
  .facts li:first-child{border-top:0;padding-top:0}
  .fact-value{font-size:18px}
  .timeline{padding-left:40px}
  .timeline::before{left:13px}
  .step{padding-bottom:34px}
  .step-index{left:-40px;width:28px;height:28px;font-size:13px}
  .step h3{font-size:19px}
  .cta-band{padding:32px 22px;border-radius:var(--r-md)}
  .cta-band h2{font-size:22px}
  .cta-form .btn{width:100%}
  .faq-q{font-size:16px;padding:18px 16px}
  .faq-a-inner{padding:0 16px 18px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .footer-desc{max-width:none}
  .next-links{flex-direction:column;align-items:flex-start;gap:16px}
  .back-top{right:16px;bottom:18px}
}
@media screen and (min-width:1440px){
  .grid-container{max-width:1200px}
}

/* roulang page: category2 */
:root{
  --brand-900:#0E2F2A;
  --brand-700:#16544A;
  --brand-500:#1F7A66;
  --accent-500:#FF6A2B;
  --accent-400:#FF8A54;
  --lime-400:#C9F24D;
  --ink-900:#14181A;
  --ink-600:#5A615C;
  --ink-400:#8B938D;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E7E4DC;
  --success:#2E9E6B;

  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;

  --shadow-sm:0 1px 2px rgba(20,24,26,.05);
  --shadow-md:0 6px 18px rgba(14,47,42,.08);
  --shadow-lg:0 18px 44px rgba(14,47,42,.12);

  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter",ui-sans-serif,system-ui,sans-serif;

  --gap-s:16px;
  --gap-m:24px;
  --gap-l:32px;
  --gap-xl:48px;
  --section-pad:96px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink-900);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-500);text-decoration:none;transition:color .22s ease,background-color .22s ease,border-color .22s ease;}
a:hover{color:var(--brand-900);}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;line-height:1.35;letter-spacing:.2px;}
h1{font-size:40px;line-height:1.25;font-weight:800;}
h2{font-size:30px;}
h3{font-size:22px;line-height:1.45;}
h4{font-size:18px;line-height:1.5;font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0 0 1.2em;padding-left:1.25em;}
li{margin-bottom:.4em;}
button{font-family:inherit;font-size:inherit;}
input,select,textarea{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 容器与栅格修正 ---------- */
.grid-container{max-width:1200px;margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px;}
.grid-x>.cell{padding-left:.9375rem;padding-right:.9375rem;}
.grid-margin-x{margin-left:-.9375rem;margin-right:-.9375rem;}

/* ---------- 通用板块 ---------- */
.section{padding:var(--section-pad) 0;}
.section--tight{padding:64px 0;}
.section--white{background:var(--surface);}
.section--line{border-top:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head h2{margin-bottom:16px;position:relative;padding-left:18px;}
.section-head h2::before{
  content:"";position:absolute;left:0;top:.28em;width:5px;height:1em;
  border-radius:3px;background:var(--accent-500);
}
.section-head p{color:var(--ink-600);font-size:16px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:1.4px;
  color:var(--brand-500);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);border-radius:2px;display:inline-block;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:14px 28px;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;transition:all .22s ease;text-align:center;
  min-height:44px;
}
.btn-primary{background:var(--accent-500);color:#fff;}
.btn-primary:hover{background:var(--accent-400);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:var(--surface);color:var(--brand-700);border-color:var(--brand-700);}
.btn-secondary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost-light:hover{background:#fff;color:var(--brand-900);border-color:#fff;}
.btn-sm{padding:11px 20px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-500);font-size:15px;}
.link-arrow svg{transition:transform .22s ease;}
.link-arrow:hover{color:var(--brand-900);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ---------- 徽章 / 标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--r-pill);
  background:rgba(31,122,102,.1);color:var(--brand-700);
  font-size:13px;font-weight:600;line-height:1.6;
}
.badge--accent{background:rgba(255,106,43,.12);color:#C74A15;}
.badge--lime{background:rgba(201,242,77,.28);color:#3C5A05;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;}
.tag{
  display:inline-flex;align-items:center;min-height:38px;
  padding:8px 16px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  color:var(--ink-600);font-size:14px;font-weight:500;
}
.tag:hover{border-color:var(--brand-500);color:var(--brand-700);}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(18,58,52,.08);}
.header-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--ink-900);font-weight:800;font-size:18px;letter-spacing:.2px;}
.brand:hover{color:var(--brand-900);}
.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:var(--brand-900);flex:0 0 auto;}
.brand-mark svg{width:21px;height:21px;}
.brand-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:12px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-600);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent-500);border-radius:2px;transform:scaleX(0);
  transition:transform .22s ease;
}
.nav-links a:hover{color:var(--brand-900);}
.nav-links a:hover::after,.nav-links a.is-active::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.header-actions{display:flex;align-items:center;gap:12px;margin-left:auto;}
.nav-search{position:relative;display:flex;align-items:center;}
.nav-search svg{position:absolute;left:14px;width:16px;height:16px;color:var(--ink-400);pointer-events:none;}
.nav-search input{
  width:240px;height:42px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:var(--surface);
  padding:0 16px 0 38px;font-size:14px;color:var(--ink-900);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.nav-search input::placeholder{color:var(--ink-400);}
.nav-search input:focus{outline:none;border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(31,122,102,.15);}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--r-sm);
  border:1px solid var(--line);background:var(--surface);
  align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink-900);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}

/* 抽屉菜单 */
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;
  background:var(--surface);z-index:210;transform:translateX(101%);
  transition:transform .3s ease;padding:24px 22px 32px;overflow-y:auto;
  box-shadow:var(--shadow-lg);
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-sm);border:1px solid var(--line);
  background:var(--surface);font-size:20px;line-height:1;color:var(--ink-600);cursor:pointer;
}
.drawer nav{display:flex;flex-direction:column;margin-bottom:22px;}
.drawer nav a{
  padding:14px 0;border-bottom:1px solid var(--line);
  font-size:15px;font-weight:500;color:var(--ink-900);min-height:52px;
  display:flex;align-items:center;
}
.drawer nav a.is-active{color:var(--brand-700);font-weight:600;}
.drawer .drawer-search{width:100%;height:46px;border-radius:var(--r-pill);border:1px solid var(--line);padding:0 18px;font-size:14px;margin-bottom:14px;}
.drawer .btn{width:100%;}
.drawer-note{margin-top:18px;font-size:13px;color:var(--ink-400);line-height:1.7;}
.drawer-overlay{
  position:fixed;inset:0;background:rgba(14,47,42,.45);z-index:200;
  opacity:0;visibility:hidden;transition:opacity .3s ease,visibility .3s ease;
}
.drawer-overlay.is-open{opacity:1;visibility:visible;}

/* ---------- 页面横幅 ---------- */
.page-banner{
  position:relative;color:#fff;
  background-image:linear-gradient(180deg,rgba(14,47,42,.74) 0%,rgba(14,47,42,.88) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  min-height:280px;display:flex;align-items:center;
}
.page-banner .grid-container{width:100%;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.66);margin-bottom:20px;}
.breadcrumb a{color:rgba(255,255,255,.78);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(255,255,255,.42);}
.breadcrumb .current{color:#fff;}
.page-banner h1{font-size:34px;color:#fff;margin-bottom:16px;max-width:820px;}
.page-banner p{color:rgba(255,255,255,.84);font-size:16px;max-width:720px;margin:0;}
.banner-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.banner-meta .chip{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);
  font-size:13px;color:#fff;
}
.banner-meta .chip i{width:6px;height:6px;border-radius:50%;background:var(--lime-400);display:inline-block;}

/* ---------- 四要点条 ---------- */
.pillar-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.pillar{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:26px 22px;box-shadow:var(--shadow-sm);height:100%;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  display:flex;flex-direction:column;
}
.pillar:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#D8D4C9;}
.pillar-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:rgba(31,122,102,.1);color:var(--brand-700);margin-bottom:18px;flex:0 0 auto;
}
.pillar-index{
  font-family:var(--font-num);font-size:13px;font-weight:700;letter-spacing:1px;
  color:var(--accent-500);margin-bottom:8px;
}
.pillar h3{font-size:18px;margin-bottom:10px;}
.pillar p{font-size:14.5px;line-height:1.75;color:var(--ink-600);margin:0;}

/* ---------- 对照表 ---------- */
.table-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);overflow:hidden;
}
.table-scroll{width:100%;overflow-x:auto;}
table.compare{width:100%;border-collapse:collapse;margin:0;min-width:620px;}
table.compare th{
  background:var(--brand-900);color:#fff;text-align:left;
  font-size:14px;font-weight:600;padding:16px 24px;border:0;letter-spacing:.4px;
}
table.compare td{
  padding:16px 24px;border:0;border-top:1px solid var(--line);
  font-size:15px;line-height:1.8;color:var(--ink-600);vertical-align:top;
}
table.compare tbody tr:nth-child(even){background:#FAF9F6;}
table.compare td:first-child{color:var(--ink-900);font-weight:600;width:30%;}
table.compare td:first-child .dot{
  display:inline-block;width:7px;height:7px;border-radius:50%;
  background:var(--success);margin-right:10px;vertical-align:middle;
}
.table-foot{
  display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;
  padding:18px 24px;border-top:1px solid var(--line);background:#FBFAF6;font-size:13.5px;color:var(--ink-400);
}

/* ---------- 图文排查 ---------- */
.media-figure{border-radius:var(--r-md);overflow:hidden;box-shadow:var(--shadow-md);background:var(--surface);}
.media-figure img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .35s ease;}
.media-figure:hover img{transform:scale(1.04);}
.check-list{list-style:none;padding:0;margin:0;}
.check-list li{position:relative;padding-left:30px;margin-bottom:22px;}
.check-list li:last-child{margin-bottom:0;}
.check-list li::before{
  content:"";position:absolute;left:2px;top:10px;width:10px;height:10px;
  border-radius:3px;background:var(--accent-500);
}
.check-list strong{display:block;font-size:16.5px;color:var(--ink-900);margin-bottom:6px;font-weight:600;}
.check-list span{display:block;font-size:14.5px;line-height:1.8;color:var(--ink-600);}

/* ---------- CTA 条 ---------- */
.cta-band{
  background:var(--brand-900);border-radius:var(--r-lg);
  padding:48px;color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;
  border-radius:50%;background:rgba(201,242,77,.08);
}
.cta-band h2{color:#fff;font-size:26px;margin-bottom:14px;}
.cta-band p{color:rgba(233,239,234,.8);font-size:15.5px;max-width:520px;margin:0 0 24px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
.cta-side{display:flex;flex-direction:column;gap:16px;position:relative;z-index:2;}
.cta-stat{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--r-md);padding:18px 20px;
}
.cta-stat b{display:block;font-family:var(--font-num);font-size:26px;color:var(--accent-400);line-height:1.2;}
.cta-stat span{font-size:13.5px;color:rgba(233,239,234,.75);}

/* ---------- FAQ ---------- */
.faq-list{max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  margin-bottom:12px;overflow:hidden;transition:border-color .22s ease,box-shadow .22s ease;
}
.faq-item.is-open{border-left:3px solid var(--accent-500);box-shadow:var(--shadow-sm);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:none;border:0;cursor:pointer;
  font-size:17px;font-weight:600;color:var(--ink-900);text-align:left;line-height:1.6;
  min-height:44px;
}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;
  background:rgba(31,122,102,.1);color:var(--brand-700);
  display:grid;place-items:center;font-size:17px;line-height:1;
  transition:background-color .28s ease,color .28s ease,transform .28s ease;
}
.faq-item.is-open .faq-icon{background:var(--accent-500);color:#fff;transform:rotate(45deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-600);}
.faq-a-inner p{margin-bottom:.9em;}

/* ---------- 订阅 / 联系表单 ---------- */
.subscribe-band{
  background:var(--brand-900);border-radius:var(--r-lg);padding:48px;
  color:#fff;display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center;
}
.subscribe-band h2{color:#fff;font-size:26px;margin-bottom:12px;}
.subscribe-band p{color:rgba(233,239,234,.78);font-size:15px;margin:0;}
.subscribe-form{display:flex;gap:12px;flex-wrap:wrap;}
.subscribe-form input{
  flex:1 1 220px;height:48px;border-radius:var(--r-sm);border:1px solid transparent;
  padding:0 18px;font-size:15px;background:#fff;color:var(--ink-900);
  transition:border-color .22s ease,box-shadow .22s ease;
}
.subscribe-form input::placeholder{color:var(--ink-400);}
.subscribe-form input:focus{outline:none;border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,106,43,.22);}
.subscribe-hint{margin-top:14px;font-size:13px;color:rgba(233,239,234,.6);line-height:1.7;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:#9FB3AC;padding:72px 0 32px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand .brand-mark{width:34px;height:34px;border-radius:10px;background:rgba(255,255,255,.08);}
.footer-brand-text{color:#E9EFEA;font-weight:800;font-size:17px;letter-spacing:.2px;}
.footer-desc{font-size:14px;line-height:1.8;color:#9FB3AC;margin:0;max-width:330px;}
.footer-col h4{color:#E9EFEA;font-size:15px;margin-bottom:18px;font-weight:600;}
.footer-col ul{list-style:none;padding:0;margin:0;}
.footer-col li{margin-bottom:12px;}
.footer-col a{color:#9FB3AC;font-size:14px;}
.footer-col a:hover{color:#fff;}
.footer-col p{font-size:14px;color:#9FB3AC;margin:0 0 12px;line-height:1.8;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);margin-top:56px;padding-top:24px;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  font-size:13px;color:#8DA29B;
}

/* ---------- 回顶 ---------- */
.to-top{
  position:fixed;right:22px;bottom:22px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-700);color:#fff;border:0;cursor:pointer;
  display:grid;place-items:center;box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:all .28s ease;z-index:120;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-900);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  :root{--section-pad:72px;}
  .grid-container{padding-left:20px;padding-right:20px;}
  h1{font-size:34px;}
  .page-banner h1{font-size:30px;}
  h2{font-size:26px;}
  .nav-links{display:none;}
  .nav-search{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand-text{font-size:16px;}
  .pillar-row{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .subscribe-band{grid-template-columns:1fr;padding:40px;gap:28px;}
  .cta-band{padding:40px;}
}
@media (max-width:640px){
  :root{--section-pad:56px;}
  .grid-container{padding-left:16px;padding-right:16px;}
  body{font-size:16px;line-height:1.85;}
  h1{font-size:27px;}
  .page-banner{min-height:220px;}
  .page-banner h1{font-size:24px;}
  h2{font-size:22px;}
  h3{font-size:19px;}
  h4{font-size:17px;}
  .header-inner{height:60px;gap:12px;}
  .brand-text{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;display:inline-block;font-size:15px;}
  .brand-mark{width:32px;height:32px;border-radius:9px;}
  .nav-toggle{width:40px;height:40px;}
  .pillar-row{
    display:flex;overflow-x:auto;gap:14px;
    scroll-snap-type:x mandatory;padding-bottom:10px;margin-right:-16px;
    -webkit-overflow-scrolling:touch;
  }
  .pillar-row::-webkit-scrollbar{height:4px;}
  .pillar-row::-webkit-scrollbar-thumb{background:#D8D4C9;border-radius:4px;}
  .pillar{min-width:78vw;scroll-snap-align:start;}
  .cta-band{padding:32px 24px;}
  .cta-band h2{font-size:22px;}
  .subscribe-band{padding:32px 24px;}
  .subscribe-band h2{font-size:22px;}
  .subscribe-form input{flex:1 1 100%;}
  .subscribe-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .site-footer{padding:56px 0 28px;}
  .footer-bottom{flex-direction:column;gap:8px;margin-top:36px;}
  .table-foot{flex-direction:column;align-items:flex-start;}
  .section-head{margin-bottom:28px;}
  .section-head h2{padding-left:14px;}
  .to-top{right:16px;bottom:16px;}
}

/* roulang page: category3 */
:root{
  --brand-900:#0E2F2A;
  --brand-700:#16544A;
  --brand-500:#1F7A66;
  --accent-500:#FF6A2B;
  --accent-400:#FF8A54;
  --lime-400:#C9F24D;
  --ink-900:#14181A;
  --ink-600:#5A615C;
  --ink-400:#8B938D;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E7E4DC;
  --success:#2E9E6B;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter",ui-sans-serif,system-ui,sans-serif;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,24,26,.05);
  --shadow-md:0 6px 18px rgba(14,47,42,.08);
  --shadow-lg:0 18px 44px rgba(14,47,42,.12);
  --sp-1:8px;
  --sp-2:16px;
  --sp-3:24px;
  --sp-4:32px;
  --sp-5:48px;
  --sp-6:64px;
  --sp-7:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.9;
  color:var(--ink-900);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.grid-x{display:flex;flex-flow:row wrap;}

/* ============ Header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--surface);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(18,58,52,.08);}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:var(--sp-3);
  max-width:1200px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:34px;height:34px;border-radius:10px;
  background:var(--brand-900);
  display:inline-flex;align-items:center;justify-content:center;
  flex:0 0 auto;
}
.brand-text{
  font-size:17px;font-weight:800;letter-spacing:.2px;color:var(--brand-900);
  white-space:nowrap;
}
.nav-links{
  display:flex;align-items:center;gap:26px;
  margin-left:var(--sp-3);
  flex:1 1 auto;
}
.nav-links a{
  position:relative;
  font-size:15px;font-weight:500;color:var(--ink-600);
  padding:6px 0;
  transition:color .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:var(--accent-500);border-radius:2px;
  transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--brand-900);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:var(--sp-2);flex:0 0 auto;}
.search-box{
  position:relative;display:flex;align-items:center;
  width:240px;height:40px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:#FBFAF7;
  padding:0 14px;gap:8px;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.search-box svg{flex:0 0 auto;stroke:var(--ink-400);}
.search-box input{
  flex:1 1 auto;min-width:0;border:0;background:transparent;outline:none;
  font-size:14px;color:var(--ink-900);
}
.search-box input::placeholder{color:var(--ink-400);}
.search-box:focus-within{
  border-color:var(--brand-500);
  box-shadow:0 0 0 3px rgba(31,122,102,.15);
}
.menu-toggle{
  display:none;
  width:44px;height:44px;border-radius:var(--r-sm);
  align-items:center;justify-content:center;
  border:1px solid var(--line);
}
.menu-toggle span{
  display:block;width:20px;height:2px;background:var(--brand-900);position:relative;
}
.menu-toggle span::before,
.menu-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--brand-900);
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 28px;
  border-radius:var(--r-pill);
  font-size:15px;font-weight:600;line-height:1;
  transition:background-color .25s ease,color .25s ease,transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  min-height:44px;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--accent-400);transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{
  background:var(--surface);color:var(--brand-700);
  border:1px solid var(--brand-700);
}
.btn-secondary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);}
.btn-ghost{
  background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.btn-sm{padding:11px 22px;font-size:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:6px;
  color:var(--brand-500);font-weight:600;font-size:14px;
  transition:color .2s ease;
}
.text-link svg{transition:transform .2s ease;}
.text-link:hover{color:var(--brand-900);}
.text-link:hover svg{transform:translateX(4px);}

/* ============ Banner ============ */
.page-banner{
  position:relative;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;
  background-position:center;
  min-height:280px;
  display:flex;align-items:flex-end;
  overflow:hidden;
}
.page-banner::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,47,42,.55) 0%,rgba(14,47,42,.86) 100%);
}
.banner-inner{
  position:relative;z-index:1;
  width:100%;
  padding-top:var(--sp-6);
  padding-bottom:var(--sp-5);
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:rgba(233,239,234,.72);
  margin-bottom:var(--sp-2);
}
.breadcrumb a{color:rgba(233,239,234,.72);transition:color .2s ease;}
.breadcrumb a:hover{color:#fff;}
.breadcrumb span.sep{color:rgba(233,239,234,.45);}
.page-banner h1{
  font-size:34px;line-height:1.3;font-weight:800;color:#fff;
  max-width:820px;
}
.banner-sub{
  margin-top:12px;
  font-size:16px;color:rgba(233,239,234,.86);
  max-width:720px;line-height:1.8;
}

/* ============ Sections ============ */
.section{padding:var(--sp-7) 0;}
.section-tight{padding:var(--sp-6) 0;}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:var(--sp-3);
  margin-bottom:var(--sp-5);
}
.section-head h2{
  font-size:30px;line-height:1.35;font-weight:700;color:var(--brand-900);
  position:relative;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:5px;border-radius:3px;
  background:var(--accent-500);
}
.section-head p{
  margin-top:10px;
  font-size:15px;color:var(--ink-600);max-width:640px;line-height:1.8;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-500);
  letter-spacing:1px;margin-bottom:10px;
}
.eyebrow i{
  width:8px;height:8px;border-radius:50%;background:var(--lime-400);display:inline-block;
}

/* ============ Tags ============ */
.tag-row{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-bottom:var(--sp-5);
}
.tag-pill{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 18px;
  border-radius:var(--r-pill);
  background:var(--surface);border:1px solid var(--line);
  font-size:14px;color:var(--ink-600);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.tag-pill:hover{border-color:var(--brand-500);color:var(--brand-700);}
.tag-pill.is-on{
  background:rgba(31,122,102,.1);
  border-color:transparent;
  color:var(--brand-700);font-weight:600;
}

/* ============ Device cards ============ */
.card-row{margin-left:-12px;margin-right:-12px;}
.card-cell{padding:0 12px 24px;}
.device-card{
  height:100%;
  display:flex;flex-direction:column;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);
  overflow:hidden;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.device-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:#DAD6CA;}
.device-media{
  position:relative;overflow:hidden;
  aspect-ratio:3/2;
  background:rgba(31,122,102,.1);
}
.device-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .35s ease;
}
.device-card:hover .device-media img{transform:scale(1.04);}
.device-media .media-tag{
  position:absolute;left:14px;top:14px;
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.94);
  font-size:12px;font-weight:600;color:var(--brand-700);
}
.device-body{
  padding:22px;
  display:flex;flex-direction:column;gap:12px;flex:1 1 auto;
}
.device-body h3{
  font-size:19px;line-height:1.5;font-weight:700;color:var(--ink-900);
}
.device-body p{
  font-size:14px;line-height:1.85;color:var(--ink-600);
}
.check-list{display:flex;flex-direction:column;gap:8px;margin-top:2px;}
.check-list li{
  position:relative;
  padding-left:22px;
  font-size:14px;line-height:1.75;color:var(--ink-600);
}
.check-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:2px;
  background:var(--brand-500);
}
.device-foot{
  margin-top:auto;padding-top:8px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.device-foot .meta{
  font-size:13px;color:var(--ink-400);
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
}

/* ============ Status board ============ */
.status-panel{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:var(--sp-5);
  box-shadow:var(--shadow-sm);
}
.status-panel h2{
  font-size:24px;font-weight:700;color:var(--brand-900);
  margin-bottom:8px;
}
.status-panel > p{
  font-size:14px;color:var(--ink-600);margin-bottom:var(--sp-4);
}
.status-list{display:flex;flex-direction:column;gap:0;}
.status-item{
  display:flex;align-items:flex-start;gap:16px;
  padding:18px 0;
  border-bottom:1px dashed var(--line);
}
.status-item:last-child{border-bottom:0;padding-bottom:0;}
.status-badge{
  flex:0 0 auto;
  display:inline-flex;align-items:center;gap:6px;
  height:28px;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
}
.badge-ok{background:rgba(46,158,107,.12);color:#1E7A50;}
.badge-note{background:rgba(31,122,102,.1);color:var(--brand-700);}
.badge-warn{background:rgba(255,106,43,.12);color:#C24A16;}
.status-text strong{
  display:block;font-size:16px;font-weight:700;color:var(--ink-900);line-height:1.7;
}
.status-text span{
  display:block;font-size:14px;color:var(--ink-600);line-height:1.8;margin-top:4px;
}

/* ============ CTA band ============ */
.cta-band{
  background:var(--brand-900);
  border-radius:var(--r-lg);
  padding:var(--sp-6);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:var(--sp-4);
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-60px;
  width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,77,.18),transparent 68%);
}
.cta-band .cta-copy{position:relative;z-index:1;max-width:620px;}
.cta-band h2{
  font-size:26px;font-weight:700;color:#fff;line-height:1.4;
}
.cta-band p{
  margin-top:10px;font-size:15px;color:#9FB3AC;line-height:1.8;
}
.cta-actions{
  position:relative;z-index:1;
  display:flex;flex-wrap:wrap;gap:12px;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-md);
  margin-bottom:12px;
  overflow:hidden;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.faq-item.is-open{
  border-color:#DAD6CA;
  border-left:3px solid var(--accent-500);
  box-shadow:var(--shadow-sm);
}
.faq-q{
  width:100%;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;
  text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);
  line-height:1.6;
  min-height:44px;
  transition:color .2s ease;
}
.faq-q:hover{color:var(--brand-700);}
.faq-icon{
  flex:0 0 auto;
  width:28px;height:28px;border-radius:50%;
  border:1px solid var(--line);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:18px;line-height:1;font-weight:400;color:var(--brand-700);
  transition:transform .28s ease,background-color .28s ease,color .28s ease,border-color .28s ease;
}
.faq-item.is-open .faq-icon{
  transform:rotate(45deg);
  background:var(--accent-500);color:#fff;border-color:var(--accent-500);
}
.faq-a{
  max-height:0;overflow:hidden;
  transition:max-height .28s ease;
}
.faq-a-inner{
  padding:0 22px 22px;
  font-size:15px;line-height:1.85;color:var(--ink-600);
}

/* ============ Footer ============ */
.site-footer{
  background:var(--brand-900);
  color:#E9EFEA;
  padding:var(--sp-6) 0 var(--sp-4);
  margin-top:var(--sp-7);
}
.footer-grid{
  display:flex;flex-wrap:wrap;
  gap:var(--sp-5);
  padding-bottom:var(--sp-5);
  border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-col{flex:1 1 200px;min-width:200px;}
.footer-col:first-child{flex:1.4 1 260px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.brand-mark-sm{
  width:32px;height:32px;border-radius:10px;
  background:rgba(255,255,255,.08);
  display:inline-flex;align-items:center;justify-content:center;
}
.footer-brand-text{font-size:16px;font-weight:800;color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB3AC;max-width:340px;}
.footer-col h4{
  font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col ul a{
  font-size:14px;color:#9FB3AC;transition:color .2s ease;
}
.footer-col ul a:hover{color:var(--lime-400);}
.footer-col p{font-size:14px;color:#9FB3AC;line-height:1.9;}
.footer-bottom{
  padding-top:var(--sp-3);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13px;color:#8CA198;line-height:1.8;
}

/* ============ Drawer ============ */
.drawer-mask{
  position:fixed;inset:0;z-index:200;
  background:rgba(14,47,42,.45);
  opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:201;
  width:82vw;max-width:340px;
  background:var(--surface);
  box-shadow:var(--shadow-lg);
  transform:translateX(102%);
  transition:transform .28s ease;
  display:flex;flex-direction:column;
  padding:20px;
  overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{
  display:flex;align-items:center;justify-content:space-between;
  padding-bottom:16px;border-bottom:1px solid var(--line);
}
.drawer-head .brand-text{font-size:15px;white-space:normal;line-height:1.4;}
.drawer-close{
  width:40px;height:40px;border-radius:var(--r-sm);
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);font-size:20px;color:var(--brand-900);
}
.drawer-nav{display:flex;flex-direction:column;margin-top:8px;}
.drawer-nav a{
  height:52px;display:flex;align-items:center;
  font-size:15px;font-weight:500;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.drawer-nav a.is-active{color:var(--brand-900);font-weight:700;}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:20px;}
.drawer-actions .search-box{width:100%;}
.drawer-actions .btn{width:100%;}
.drawer-note{
  margin-top:auto;padding-top:20px;
  font-size:13px;color:var(--ink-400);line-height:1.7;
}

/* ============ Back to top ============ */
.to-top{
  position:fixed;right:24px;bottom:24px;z-index:120;
  width:46px;height:46px;border-radius:50%;
  background:var(--brand-900);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .25s ease;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--brand-700);}

/* ============ Responsive ============ */
@media screen and (max-width:1023px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .nav-links{display:none;}
  .search-box{display:none;}
  .header-actions .btn-primary{display:none;}
  .menu-toggle{display:inline-flex;}
  .header-inner{height:64px;justify-content:space-between;}
  .brand-text{font-size:15px;max-width:180px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .section{padding:72px 0;}
  .section-tight{padding:56px 0;}
  .section-head h2{font-size:25px;}
  .page-banner{min-height:240px;}
  .page-banner h1{font-size:30px;}
  .cta-band{padding:var(--sp-5);}
  .cta-band h2{font-size:23px;}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px;}
  body{font-size:16px;}
  .site-header .header-inner{height:60px;}
  .brand-text{font-size:14.5px;max-width:150px;}
  .section{padding:56px 0;}
  .section-head{margin-bottom:var(--sp-4);}
  .section-head h2{font-size:22px;padding-left:13px;}
  .section-head p{font-size:14px;}
  .page-banner{min-height:200px;}
  .page-banner h1{font-size:24px;line-height:1.35;}
  .banner-sub{font-size:14px;}
  .banner-inner{padding-top:var(--sp-5);padding-bottom:var(--sp-4);}
  .tag-row{gap:8px;margin-bottom:var(--sp-4);}
  .tag-pill{height:34px;padding:0 14px;font-size:13.5px;}
  .device-body{padding:18px;}
  .device-body h3{font-size:17px;}
  .status-panel{padding:var(--sp-3);}
  .status-panel h2{font-size:20px;}
  .status-item{flex-direction:column;gap:10px;}
  .cta-band{padding:var(--sp-4);}
  .cta-band h2{font-size:20px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .faq-q{font-size:16px;padding:16px 18px;}
  .faq-a-inner{padding:0 18px 18px;font-size:14.5px;}
  .site-footer{padding:var(--sp-5) 0 var(--sp-3);margin-top:var(--sp-6);}
  .footer-col{flex:1 1 100%;}
  .footer-col:first-child{flex:1 1 100%;}
  .to-top{right:16px;bottom:16px;}
}
@media screen and (min-width:1440px){
  .grid-container{padding-left:32px;padding-right:32px;}
}

/* roulang page: category4 */
:root{
  --brand-900:#0E2F2A;
  --brand-700:#16544A;
  --brand-500:#1F7A66;
  --accent-500:#FF6A2B;
  --accent-400:#FF8A54;
  --lime-400:#C9F24D;
  --ink-900:#14181A;
  --ink-600:#5A615C;
  --ink-400:#8B938D;
  --bg:#F7F6F2;
  --surface:#FFFFFF;
  --line:#E7E4DC;
  --success:#2E9E6B;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:22px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(20,24,26,.05);
  --shadow-md:0 6px 18px rgba(14,47,42,.08);
  --shadow-lg:0 18px 44px rgba(14,47,42,.12);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-num:"DIN Alternate","Inter",ui-sans-serif,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink-900);
  font-family:var(--font-sans);font-size:16px;line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s ease,background-color .25s ease,border-color .25s ease,transform .25s ease;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--brand-700);outline-offset:2px;border-radius:4px;}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ Header ============ */
.site-header{
  position:sticky;top:0;z-index:100;background:var(--surface);
  border-bottom:1px solid var(--line);transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 2px 12px rgba(18,58,52,.08);}
.header-inner{display:flex;align-items:center;gap:28px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:10px;background:var(--brand-900);
  display:flex;align-items:center;justify-content:center;flex:0 0 auto;
}
.brand-text{
  font-size:17px;font-weight:800;letter-spacing:.2px;color:var(--brand-900);
  white-space:nowrap;
}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:8px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-600);
  padding:6px 0;line-height:1.5;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--accent-500);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--brand-900);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--brand-900);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{
  position:relative;display:flex;align-items:center;height:42px;width:238px;
  background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);
  padding:0 14px 0 38px;transition:border-color .25s ease,box-shadow .25s ease;
}
.search-box svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);}
.search-box input{
  border:0;background:transparent;width:100%;font-size:14px;color:var(--ink-900);
  font-family:inherit;line-height:1.6;
}
.search-box input::placeholder{color:var(--ink-400);}
.search-box input:focus{outline:none;}
.search-box:focus-within{border-color:var(--brand-500);box-shadow:0 0 0 3px rgba(31,122,102,.15);}

/* ============ Buttons ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-pill);padding:14px 28px;font-size:15px;font-weight:600;
  border:1px solid transparent;cursor:pointer;line-height:1.4;
  transition:all .25s ease;min-height:44px;
}
.btn-primary{background:var(--accent-500);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--accent-400);transform:translateY(-2px);box-shadow:var(--shadow-md);color:#fff;}
.btn-primary:active{transform:translateY(0);}
.btn-secondary{background:var(--surface);border-color:var(--brand-700);color:var(--brand-700);}
.btn-secondary:hover{background:var(--brand-700);color:#fff;}
.btn-sm{padding:10px 20px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;color:var(--brand-500);
  font-weight:600;font-size:15px;
}
.link-arrow svg{transition:transform .25s ease;}
.link-arrow:hover{color:var(--brand-900);}
.link-arrow:hover svg{transform:translateX(4px);}

/* ============ Mobile drawer ============ */
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:var(--surface);align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-900);position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-900);
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,47,42,.45);opacity:0;visibility:hidden;
  transition:opacity .25s ease,visibility .25s ease;z-index:120;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:82vw;max-width:340px;background:var(--surface);
  z-index:130;transform:translateX(102%);transition:transform .3s ease;
  display:flex;flex-direction:column;padding:20px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line);}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-sm);background:var(--surface);font-size:18px;color:var(--ink-600);cursor:pointer;}
.drawer-links{display:flex;flex-direction:column;margin-top:8px;}
.drawer-links a{
  display:flex;align-items:center;min-height:52px;font-size:15px;color:var(--ink-600);
  border-bottom:1px solid var(--line);
}
.drawer-links a.is-active{color:var(--brand-900);font-weight:600;}
.drawer-search{display:flex;align-items:center;height:48px;background:var(--bg);border:1px solid var(--line);border-radius:var(--r-pill);padding:0 16px;margin-top:20px;}
.drawer-search input{border:0;background:transparent;width:100%;font-size:14px;font-family:inherit;}
.drawer-search input:focus{outline:none;}
.drawer-cta{margin-top:16px;}
.drawer-note{margin-top:auto;padding-top:20px;font-size:13px;line-height:1.7;color:var(--ink-400);}

/* ============ Banner ============ */
.page-banner{
  position:relative;min-height:280px;display:flex;align-items:flex-end;
  background-image:url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.page-banner::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,47,42,.55) 0%,rgba(14,47,42,.82) 100%);
}
.banner-inner{position:relative;z-index:2;padding:56px 0 44px;width:100%;}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(233,239,234,.75);margin-bottom:18px;flex-wrap:wrap;}
.breadcrumb a{color:rgba(233,239,234,.75);}
.breadcrumb a:hover{color:#fff;}
.breadcrumb .sep{color:rgba(233,239,234,.45);}
.banner-inner h1{
  font-size:34px;line-height:1.3;font-weight:800;color:#fff;letter-spacing:.3px;
  max-width:820px;
}
.banner-sub{
  margin-top:16px;font-size:16px;line-height:1.85;color:rgba(233,239,234,.88);max-width:720px;
}
.banner-meta{display:flex;gap:20px;margin-top:22px;flex-wrap:wrap;}
.banner-meta span{
  font-size:13px;color:rgba(233,239,234,.8);display:inline-flex;align-items:center;gap:8px;
}
.banner-meta i{width:6px;height:6px;border-radius:50%;background:var(--lime-400);display:inline-block;}

/* ============ Anchor pills ============ */
.anchor-bar{background:var(--surface);border-bottom:1px solid var(--line);}
.anchor-inner{display:flex;align-items:center;gap:12px;padding:18px 0;overflow-x:auto;scrollbar-width:none;}
.anchor-inner::-webkit-scrollbar{display:none;}
.anchor-inner .anchor-label{font-size:13px;color:var(--ink-400);white-space:nowrap;}
.pill{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 20px;
  border-radius:var(--r-pill);border:1px solid var(--line);background:var(--surface);
  font-size:14px;font-weight:600;color:var(--ink-600);white-space:nowrap;
  transition:all .25s ease;
}
.pill:hover{border-color:var(--brand-500);color:var(--brand-900);background:rgba(31,122,102,.06);}
.pill .num{color:var(--accent-500);font-weight:700;}

/* ============ Sections ============ */
.section{padding:96px 0;}
.section.tight{padding:72px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
  letter-spacing:1.4px;color:var(--brand-500);text-transform:uppercase;margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--accent-500);display:inline-block;}
h2.section-title{font-size:30px;line-height:1.35;font-weight:700;color:var(--ink-900);}
.section-desc{margin-top:16px;color:var(--ink-600);font-size:16px;line-height:1.9;max-width:780px;}

.faq-group{margin-top:48px;}
.faq-group:first-of-type{margin-top:0;}
.group-head{display:flex;align-items:center;gap:14px;margin-bottom:22px;}
.group-head h3{font-size:22px;font-weight:700;color:var(--ink-900);}
.group-head .group-num{
  font-family:var(--font-num);font-size:15px;font-weight:700;color:var(--accent-500);
  background:rgba(255,106,43,.1);border-radius:var(--r-pill);padding:4px 14px;
}
.group-head .group-line{flex:1;height:1px;background:var(--line);}

/* ============ FAQ accordion ============ */
.faq-list{display:flex;flex-direction:column;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .25s ease,border-color .25s ease;
  border-left:3px solid transparent;
}
.faq-item:hover{box-shadow:var(--shadow-md);}
.faq-item.is-open{border-left-color:var(--accent-500);box-shadow:var(--shadow-md);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:17px;font-weight:600;color:var(--ink-900);line-height:1.6;font-family:inherit;
}
.faq-q .q-text{flex:1;}
.faq-icon{
  flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);
  position:relative;transition:transform .28s ease,background-color .28s ease,border-color .28s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;top:50%;left:50%;background:var(--brand-700);
  transform:translate(-50%,-50%);transition:background-color .28s ease;
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--accent-500);border-color:var(--accent-500);}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;}
.faq-a-inner{padding:0 22px 22px;color:var(--ink-600);font-size:15px;line-height:1.85;}
.faq-a-inner p+p{margin-top:12px;}
.faq-a-inner strong{color:var(--ink-900);font-weight:600;}
.faq-a-inner ul{margin-top:10px;display:flex;flex-direction:column;gap:8px;}
.faq-a-inner ul li{position:relative;padding-left:18px;}
.faq-a-inner ul li::before{
  content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:2px;
  background:var(--brand-500);
}

/* ============ Steps panel ============ */
.panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:40px;box-shadow:var(--shadow-sm);
}
.steps{counter-reset:step;display:flex;flex-direction:column;gap:0;}
.step{
  display:flex;gap:22px;padding:22px 0;border-bottom:1px dashed var(--line);
}
.step:last-child{border-bottom:0;padding-bottom:6px;}
.step:first-child{padding-top:6px;}
.step-num{
  counter-increment:step;flex:0 0 auto;width:44px;height:44px;border-radius:50%;
  background:rgba(31,122,102,.1);color:var(--brand-700);font-family:var(--font-num);
  font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;
}
.step-body h4{font-size:18px;font-weight:600;color:var(--ink-900);margin-bottom:6px;}
.step-body p{color:var(--ink-600);font-size:15px;line-height:1.85;}

/* ============ Mid CTA ============ */
.cta-band{
  background:var(--brand-900);border-radius:var(--r-lg);padding:48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-80px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,77,.18) 0%,rgba(201,242,77,0) 70%);
}
.cta-band h2{font-size:26px;line-height:1.4;font-weight:700;position:relative;z-index:1;}
.cta-band p{margin-top:10px;color:rgba(233,239,234,.82);font-size:15px;line-height:1.8;max-width:560px;position:relative;z-index:1;}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap;position:relative;z-index:1;}
.btn-ghost{background:transparent;border-color:rgba(233,239,234,.45);color:#E9EFEA;}
.btn-ghost:hover{background:rgba(233,239,234,.12);color:#fff;border-color:#E9EFEA;}

/* ============ Contact form band ============ */
.contact-band{
  background:var(--brand-900);border-radius:var(--r-lg);padding:56px;color:#fff;
  display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;
}
.contact-band h2{font-size:28px;line-height:1.4;font-weight:700;}
.contact-band .band-desc{margin-top:14px;color:rgba(233,239,234,.82);font-size:15px;line-height:1.85;}
.band-points{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
.band-points li{display:flex;align-items:flex-start;gap:10px;font-size:14px;color:rgba(233,239,234,.85);}
.band-points li i{
  flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--lime-400);margin-top:9px;
}
.contact-form{background:rgba(255,255,255,.06);border:1px solid rgba(233,239,234,.16);border-radius:var(--r-md);padding:28px;}
.field{margin-bottom:16px;}
.field label{display:block;font-size:13px;color:rgba(233,239,234,.8);margin-bottom:8px;font-weight:500;}
.field input,.field select{
  width:100%;height:48px;border-radius:var(--r-sm);border:1px solid transparent;
  background:#fff;color:var(--ink-900);font-size:15px;font-family:inherit;padding:0 14px;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#5A615C 50%),linear-gradient(135deg,#5A615C 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 14px) 21px;background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-right:38px;}
.field input:focus,.field select:focus{outline:none;border-color:var(--accent-500);box-shadow:0 0 0 3px rgba(255,106,43,.22);}
.form-note{margin-top:12px;font-size:12.5px;line-height:1.7;color:rgba(233,239,234,.66);}
.form-success{
  display:none;margin-top:14px;font-size:14px;color:#C9F24D;line-height:1.7;
}
.form-success.is-visible{display:block;}

/* ============ Footer ============ */
.site-footer{background:var(--brand-900);color:#E9EFEA;margin-top:0;}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;
  padding:72px 0 56px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
.footer-brand-text{font-size:17px;font-weight:800;color:#fff;}
.footer-desc{font-size:14px;line-height:1.85;color:#9FB3AC;max-width:320px;}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col ul a{font-size:14px;color:#9FB3AC;}
.footer-col ul a:hover{color:#fff;}
.footer-col p{font-size:14px;color:#9FB3AC;line-height:1.9;margin-bottom:8px;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:24px 0 32px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#9FB3AC;
}

/* ============ Back to top ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;width:46px;height:46px;border-radius:50%;
  background:var(--brand-700);color:#fff;border:0;cursor:pointer;display:flex;
  align-items:center;justify-content:center;box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .28s ease;z-index:90;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--accent-500);}

/* ============ Responsive ============ */
@media screen and (max-width:1024px){
  .grid-container{padding-left:20px;padding-right:20px;}
  .nav-links{display:none;}
  .search-box{display:none;}
  .nav-toggle{display:flex;}
  .header-inner{height:64px;gap:16px;}
  .section{padding:72px 0;}
  .section.tight{padding:56px 0;}
  .banner-inner{padding:44px 0 36px;}
  .banner-inner h1{font-size:28px;}
  .panel{padding:28px;}
  .cta-band{padding:36px;}
  .contact-band{grid-template-columns:1fr;padding:40px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;padding:56px 0 40px;}
}
@media screen and (max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px;}
  .brand-text{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .section{padding:56px 0;}
  .section.tight{padding:44px 0;}
  .page-banner{min-height:180px;}
  .banner-inner{padding:32px 0 28px;}
  .banner-inner h1{font-size:26px;}
  .banner-sub{font-size:15px;margin-top:12px;}
  h2.section-title{font-size:23px;}
  .section-head{margin-bottom:28px;}
  .faq-q{font-size:16px;padding:17px 16px;}
  .faq-a-inner{padding:0 16px 18px;font-size:15px;}
  .group-head h3{font-size:19px;}
  .panel{padding:22px;}
  .step{gap:14px;}
  .step-num{width:38px;height:38px;font-size:15px;}
  .cta-band{padding:28px 22px;border-radius:var(--r-md);}
  .cta-band h2{font-size:21px;}
  .cta-band .cta-actions{width:100%;}
  .cta-band .cta-actions .btn{width:100%;}
  .contact-band{padding:28px 22px;border-radius:var(--r-md);}
  .contact-band h2{font-size:22px;}
  .contact-form{padding:20px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding:44px 0 32px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px;}
  .to-top{right:16px;bottom:18px;}
}
@media screen and (min-width:1440px){
  .grid-container{max-width:1200px;}
}