/* roulang page: index */
:root{
  --brand-900:#07231B;
  --brand-800:#0B2E23;
  --brand-700:#124534;
  --brand-600:#1A5C46;
  --brand-500:#22795B;
  --lime-400:#C9F24E;
  --lime-300:#DBFA8A;
  --amber-500:#F0A03C;
  --amber-600:#D98026;
  --bg:#F5F3EC;
  --surface:#FFFFFF;
  --surface-2:#EDEAE1;
  --surface-3:#E3E0D4;
  --ink:#0F1F1A;
  --ink-2:#4B5A54;
  --ink-3:#7E8A85;
  --line:#DEDBD1;
  --line-strong:#C6C2B4;
  --radius-s:12px;
  --radius:20px;
  --radius-l:24px;
  --shadow-1:0 1px 2px rgba(7,35,27,.06);
  --shadow-2:0 18px 40px -22px rgba(7,35,27,.28);
  --ease:cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Inter",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color .25s var(--ease);}
a:hover{color:var(--brand-800);text-decoration:underline;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:3px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ============ 左侧竖向导航 ============ */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:248px;z-index:50;
  background:var(--brand-800);
  background-image:radial-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:4px 4px;
  border-right:1px solid var(--line-strong);
  display:flex;flex-direction:column;
  padding:26px 0 22px;
}
.brand-block{
  display:flex;align-items:center;gap:12px;
  padding:0 20px 24px;
  border-bottom:1px solid rgba(255,255,255,.10);
  text-decoration:none;
}
.brand-block:hover{text-decoration:none;}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;border-radius:14px;
  background:var(--lime-400);color:var(--brand-900);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:14px;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:17px;color:#fff;font-weight:700;letter-spacing:-.01em;}
.brand-text span{font-size:12px;color:rgba(227,224,212,.72);letter-spacing:.16em;}
.side-nav{padding:18px 0;flex:1 1 auto;overflow-y:auto;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  height:48px;padding:0 20px;font-size:15px;font-weight:500;
  color:rgba(227,224,212,.82);text-decoration:none;
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.side-nav a i{font-size:15px;width:18px;text-align:center;opacity:.85;}
.side-nav a:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none;transform:translateX(2px);}
.side-nav a.is-active{background:rgba(201,242,78,.10);color:#fff;}
.side-nav a.is-active::before{content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;border-radius:0 4px 4px 0;background:var(--lime-400);}
.side-foot{padding:18px 20px 0;border-top:1px solid rgba(255,255,255,.10);}
.side-foot .btn{width:100%;justify-content:center;}
.side-foot .meta-line{margin-top:14px;font-size:12px;line-height:1.7;color:rgba(227,224,212,.6);}

/* ============ 移动端顶部条与抽屉 ============ */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;z-index:60;
  align-items:center;justify-content:space-between;
  padding:0 18px;background:var(--brand-800);border-bottom:1px solid rgba(255,255,255,.12);
}
.mobile-bar .brand-text b{font-size:16px;}
.mobile-bar .brand-text span{font-size:11px;}
.mobile-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#fff;font-size:18px;cursor:pointer;
  display:flex;align-items:center;justify-content:center;
  transition:background .25s var(--ease);
}
.mobile-toggle:hover{background:rgba(255,255,255,.10);}
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--brand-800);
  background-image:radial-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:4px 4px;
  transform:translateY(-100%);transition:transform .32s var(--ease);
  display:flex;flex-direction:column;padding:22px 22px 30px;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:20px;border-bottom:1px solid rgba(255,255,255,.12);}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#fff;font-size:18px;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;padding:18px 0;flex:1 1 auto;overflow-y:auto;}
.drawer-nav a{
  display:flex;align-items:center;min-height:56px;font-size:19px;font-weight:600;
  color:rgba(237,234,225,.85);text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer-nav a.is-active{color:var(--lime-400);}
.drawer .btn{width:100%;justify-content:center;}
body.is-locked{overflow:hidden;}

/* ============ 主内容区 ============ */
.main-wrap{margin-left:248px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  min-height:46px;padding:0 22px;border-radius:14px;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1.5px solid transparent;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease),transform .25s var(--ease),box-shadow .25s var(--ease);
}
.btn i{font-size:14px;}
.btn-primary{background:var(--lime-400);color:var(--brand-900);}
.btn-primary:hover{background:var(--brand-800);color:#fff;transform:translateY(-1px);text-decoration:none;box-shadow:var(--shadow-2);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;text-decoration:none;transform:translateY(-1px);}
.btn-outline{background:transparent;color:var(--brand-700);border-color:var(--brand-700);}
.btn-outline:hover{background:var(--surface-2);color:var(--brand-800);text-decoration:none;transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--brand-800);}
.btn-light:hover{background:var(--lime-400);color:var(--brand-900);text-decoration:none;transform:translateY(-1px);}
.btn-block{width:100%;justify-content:center;}

/* ============ 首屏 ============ */
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--brand-800) 0%,var(--brand-700) 52%,var(--brand-600) 100%);
  padding:80px 0 92px;
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:56px 56px;opacity:.55;
}
.hero::after{
  content:"";position:absolute;right:-160px;bottom:-260px;width:640px;height:640px;border-radius:50%;
  border:1px solid rgba(201,242,78,.12);
  box-shadow:0 0 0 60px rgba(201,242,78,.05),0 0 0 140px rgba(201,242,78,.03);
  pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:5fr 7fr;gap:52px;align-items:center;}
.hero-pill{
  display:inline-flex;align-items:center;gap:9px;padding:7px 16px;border-radius:999px;
  background:rgba(7,35,27,.55);border:1px solid rgba(201,242,78,.28);
  color:var(--lime-300);font-size:13px;letter-spacing:.06em;
}
.hero-pill i{font-size:8px;color:var(--lime-400);}
.hero h1{
  margin:22px 0 0;color:#fff;
  font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;
}
.hero-sub{
  margin-top:18px;font-size:18px;line-height:1.75;color:rgba(255,255,255,.78);max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-points{display:flex;flex-wrap:wrap;gap:22px;margin-top:32px;padding-top:24px;border-top:1px solid rgba(255,255,255,.14);}
.hero-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.8);}
.hero-points i{color:var(--lime-400);font-size:13px;}
.hero-visual{position:relative;}
.hero-photo{
  position:relative;border-radius:var(--radius-l);overflow:hidden;
  box-shadow:0 30px 70px -40px rgba(0,0,0,.65);
  aspect-ratio:16/9;
}
.hero-photo img{width:100%;height:100%;object-fit:cover;}
.hero-photo::after{content:"";position:absolute;inset:0;background:rgba(7,35,27,.28);}
.hero-badges{
  position:absolute;right:-14px;bottom:-26px;
  display:grid;grid-template-columns:repeat(2,minmax(118px,1fr));gap:12px;
  width:min(300px,86%);
}
.hero-badge{
  background:rgba(255,255,255,.92);border-radius:var(--radius-s);
  padding:12px 14px;box-shadow:var(--shadow-2);
}
.hero-badge:nth-child(even){transform:translateY(14px);}
.hero-badge b{display:block;font-family:var(--font-num);font-size:22px;font-weight:800;color:var(--brand-700);line-height:1.2;}
.hero-badge em{display:block;font-style:normal;font-size:12px;color:var(--ink-2);margin-top:2px;}

/* ============ 板块通用 ============ */
.section{padding:88px 0;border-top:1px solid var(--line);}
.section-alt{background:var(--surface);}
.eyebrow{
  display:block;font-family:var(--font-num);font-size:12.5px;letter-spacing:.14em;
  color:var(--brand-600);font-weight:700;margin-bottom:12px;
}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:40px;}
.sec-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25;}
.sec-sub{margin-top:12px;font-size:15.5px;color:var(--ink-2);max-width:660px;}
.sec-link{display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand-600);}
.sec-link:hover{color:var(--brand-800);}
.sec-link i{font-size:12px;transition:transform .25s var(--ease);}
.sec-link:hover i{transform:translateX(3px);}

/* ============ 服务能力 Bento ============ */
.bento{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.bento-main{
  grid-column:span 2;grid-row:span 2;
  position:relative;border-radius:var(--radius-l);padding:36px 34px;
  background:linear-gradient(150deg,var(--brand-700),var(--brand-800));
  color:#fff;display:flex;flex-direction:column;justify-content:space-between;
  min-height:320px;overflow:hidden;
}
.bento-main::after{
  content:"";position:absolute;right:-70px;top:-70px;width:230px;height:230px;border-radius:50%;
  border:1px solid rgba(201,242,78,.22);
}
.bento-main .icon-lg{
  width:52px;height:52px;border-radius:16px;background:rgba(201,242,78,.16);
  color:var(--lime-400);display:flex;align-items:center;justify-content:center;font-size:22px;
  margin-bottom:auto;position:relative;z-index:2;
}
.bento-main h3{font-size:26px;color:#fff;margin-top:26px;position:relative;z-index:2;}
.bento-main p{margin-top:14px;font-size:15px;line-height:1.85;color:rgba(255,255,255,.78);position:relative;z-index:2;}
.bento-main ul{margin-top:20px;display:grid;gap:8px;position:relative;z-index:2;}
.bento-main ul li{display:flex;gap:9px;font-size:14px;color:rgba(255,255,255,.86);}
.bento-main ul i{color:var(--lime-400);font-size:12px;margin-top:7px;}
.bento-card{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px 20px 22px 24px;display:flex;flex-direction:column;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);
}
.bento-card::before{content:"";position:absolute;left:0;top:22px;bottom:22px;width:3px;border-radius:0 3px 3px 0;background:var(--lime-400);}
.bento-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--line-strong);}
.bento-card i.ic{font-size:18px;color:var(--brand-600);}
.bento-card h3{font-size:17px;margin-top:12px;line-height:1.4;}
.bento-card p{margin-top:8px;font-size:13.5px;line-height:1.7;color:var(--ink-2);}
.bento-card .arrow{margin-top:auto;padding-top:14px;font-size:13px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:7px;}
.bento-card .arrow i{font-size:11px;transition:transform .25s var(--ease);}
.bento-card:hover .arrow i{transform:translateX(3px);}

/* ============ 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;color:var(--ink);text-decoration:none;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease),border-color .25s var(--ease);
}
.news-card:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);border-color:var(--line-strong);text-decoration:none;color:var(--ink);}
.news-media{position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--surface-3);}
.news-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.news-card:hover .news-media img{transform:scale(1.04);}
.tag{
  position:absolute;left:14px;top:14px;z-index:2;
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(7,35,27,.86);color:var(--lime-300);font-size:12px;font-weight:600;letter-spacing:.02em;
}
.news-body{padding:20px 20px 18px;display:flex;flex-direction:column;flex:1 1 auto;}
.news-title{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-sum{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);
}
.news-foot .go{display:inline-flex;align-items:center;gap:7px;font-weight:600;color:var(--brand-600);}
.news-card:hover .news-foot .go i{transform:translateX(3px);}
.news-foot .go i{font-size:11px;transition:transform .25s var(--ease);}
.news-empty{
  min-height:220px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;
  background:var(--surface);border:1px dashed var(--line-strong);border-radius:var(--radius-l);text-align:center;padding:36px 24px;
}
.news-empty i{font-size:26px;color:var(--brand-500);}
.news-empty p{font-size:15px;color:var(--ink-2);}
.news-more-wrap{margin-top:34px;text-align:center;}

/* ============ 优势数据 ============ */
.stats{
  background:var(--brand-800);
  background-image:radial-gradient(rgba(255,255,255,.03) 1px,transparent 1px);
  background-size:4px 4px;
  padding:56px 0 44px;
}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:6px 26px;border-left:1px solid rgba(255,255,255,.12);}
.stat:first-child{border-left:0;padding-left:0;}
.stat b{display:block;font-family:var(--font-num);font-size:clamp(28px,3.4vw,44px);font-weight:800;color:#fff;line-height:1.1;letter-spacing:-.02em;}
.stat b small{font-size:15px;font-weight:600;margin-left:4px;color:var(--lime-400);}
.stat span{display:block;margin-top:10px;font-size:14px;color:rgba(227,224,212,.7);}
.stats-bar{margin-top:38px;width:30%;height:3px;border-radius:999px;background:var(--lime-400);}
.stats-cta{margin-top:26px;}

/* ============ 案例 zigzag ============ */
.case-row{
  display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;
  padding:44px 0;border-bottom:1px solid var(--line);
}
.case-row:first-child{padding-top:0;}
.case-row:last-child{border-bottom:0;padding-bottom:0;}
.case-row.reverse .case-media{order:2;}
.case-media{border-radius:var(--radius-l);overflow:hidden;aspect-ratio:16/9;background:var(--surface-3);}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.case-row:hover .case-media img{transform:scale(1.04);}
.case-label{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(34,121,91,.10);color:var(--brand-600);font-size:12px;font-weight:600;letter-spacing:.06em;
}
.case-row h3{font-size:22px;margin-top:14px;line-height:1.4;}
.case-row p{margin-top:12px;font-size:15px;color:var(--ink-2);line-height:1.85;}
.case-metrics{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;}
.metric{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:9px 14px;border-radius:var(--radius-s);background:var(--surface-2);border:1px solid var(--line);
}
.metric b{font-family:var(--font-num);font-size:18px;font-weight:800;color:var(--amber-600);}
.metric span{font-size:12.5px;color:var(--ink-2);}
.case-link{display:inline-flex;align-items:center;gap:8px;margin-top:20px;font-size:14.5px;font-weight:600;color:var(--brand-600);}
.case-link i{font-size:12px;transition:transform .25s var(--ease);}
.case-link:hover i{transform:translateX(3px);}

/* ============ 服务方案 ============ */
.plans{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:start;}
.plan{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);
  padding:30px 26px;display:flex;flex-direction:column;
  transition:box-shadow .25s var(--ease),transform .25s var(--ease);
}
.plan:hover{box-shadow:var(--shadow-2);transform:translateY(-2px);}
.plan:nth-child(1){margin-top:0;}
.plan:nth-child(2){margin-top:24px;}
.plan:nth-child(3){margin-top:48px;}
.plan h3{font-size:20px;}
.plan .fit{margin-top:8px;font-size:13.5px;color:var(--ink-3);}
.plan ul{margin-top:22px;display:grid;gap:11px;padding-top:20px;border-top:1px solid var(--line);}
.plan ul li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.plan ul i{color:var(--brand-500);font-size:12px;margin-top:7px;}
.plan .btn{margin-top:26px;}
.plan-featured{background:linear-gradient(150deg,var(--brand-700),var(--brand-800));border-color:var(--brand-700);}
.plan-featured h3{color:#fff;}
.plan-featured .fit{color:rgba(255,255,255,.68);}
.plan-featured ul{border-top-color:rgba(255,255,255,.16);}
.plan-featured ul li{color:rgba(255,255,255,.82);}
.plan-featured ul i{color:var(--lime-400);}
.plan-badge{
  position:absolute;left:26px;top:-13px;height:26px;padding:0 13px;border-radius:999px;
  background:var(--lime-400);color:var(--brand-900);font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;letter-spacing:.06em;
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
ul.accordion{margin:0;padding:0;list-style:none;background:transparent;}
ul.accordion .accordion-item{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:16px;
  margin-bottom:14px;overflow:hidden;
  transition:box-shadow .25s var(--ease),border-color .25s var(--ease);
}
ul.accordion .accordion-item:hover{box-shadow:var(--shadow-2);border-color:var(--line-strong);}
ul.accordion .accordion-item.is-active::before{content:"";position:absolute;left:0;top:0;bottom:0;width:4px;background:var(--lime-400);}
ul.accordion .accordion-title{
  display:flex;align-items:center;gap:16px;padding:20px 22px;
  font-size:17px;font-weight:600;color:var(--ink);background:transparent;border:0;line-height:1.5;
}
ul.accordion .accordion-title:hover{background:var(--surface-2);color:var(--ink);text-decoration:none;}
ul.accordion .accordion-title::before{content:none !important;display:none !important;}
ul.accordion .accordion-title::after{
  content:"+";margin-left:auto;flex:0 0 30px;width:30px;height:30px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  border:1px solid var(--line-strong);color:var(--brand-700);font-size:17px;font-weight:600;line-height:1;
  transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
ul.accordion .accordion-title[aria-expanded="true"]::after{content:"−";background:var(--lime-400);border-color:var(--lime-400);color:var(--brand-900);}
.faq-num{font-family:var(--font-num);font-size:15px;font-weight:800;color:var(--line-strong);flex:0 0 auto;}
ul.accordion .accordion-content{
  padding:0 22px 22px 62px;border-top:1px dashed var(--line);background:transparent;color:var(--ink-2);
}
ul.accordion .accordion-content p{padding-top:16px;font-size:15px;line-height:1.85;}

/* ============ CTA 条 ============ */
.cta-band{background:var(--brand-900);padding:56px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-inner h2{font-size:clamp(22px,2.6vw,30px);color:#fff;line-height:1.3;}
.cta-inner p{margin-top:10px;font-size:15px;color:rgba(227,224,212,.72);max-width:640px;}

/* ============ 联系表单 ============ */
.contact-grid{display:grid;grid-template-columns:7fr 5fr;gap:26px;align-items:start;}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-l);padding:34px 32px;}
.field{margin-bottom:20px;}
.field:last-of-type{margin-bottom:0;}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.field input[type="text"],
.field input[type="tel"],
.field select,
.field textarea{
  width:100%;height:46px;padding:0 14px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);color:var(--ink);font-size:15px;font-family:inherit;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.field textarea{height:118px;padding:12px 14px;line-height:1.7;resize:vertical;}
.field select{appearance:none;background-image:none;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(34,121,91,.15);
}
.check{display:flex;align-items:flex-start;gap:10px;font-size:13.5px;color:var(--ink-2);line-height:1.7;}
.check input{margin-top:5px;width:16px;height:16px;accent-color:var(--brand-600);}
.form-note{margin-top:16px;font-size:12.5px;color:var(--ink-3);}
.info-card{
  background:linear-gradient(150deg,var(--brand-700),var(--brand-900));
  border-radius:var(--radius-l);padding:32px 30px;color:#fff;
}
.info-card h3{color:#fff;font-size:19px;}
.info-list{margin-top:22px;display:grid;gap:18px;}
.info-list li{display:flex;gap:13px;}
.info-list i{color:var(--lime-400);font-size:15px;margin-top:6px;}
.info-list b{display:block;font-size:14px;color:#fff;font-weight:600;}
.info-list span{display:block;font-size:13.5px;color:rgba(255,255,255,.7);margin-top:2px;}
.info-photo{margin-top:24px;border-radius:16px;overflow:hidden;aspect-ratio:16/9;}
.info-photo img{width:100%;height:100%;object-fit:cover;}

/* ============ 页脚 ============ */
.site-foot{
  background:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  background-color:var(--brand-800);
  color:rgba(227,224,212,.78);padding:64px 0 26px;
}
.foot-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
.foot-brand .brand-block{padding:0 0 16px;border-bottom:0;display:flex;align-items:center;gap:12px;}
.foot-brand p{margin-top:14px;font-size:13.5px;line-height:1.8;color:rgba(227,224,212,.66);max-width:320px;}
.foot-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:600;}
.foot-col ul{display:grid;gap:10px;}
.foot-col a{font-size:13.5px;color:rgba(227,224,212,.74);text-decoration:none;}
.foot-col a:hover{color:var(--lime-400);text-decoration:none;}
.foot-col li span{font-size:13.5px;color:rgba(227,224,212,.74);}
.foot-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:12.5px;color:rgba(227,224,212,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .sidebar{width:208px;}
  .main-wrap{margin-left:208px;}
  .container{padding:0 32px;}
  .hero-grid{gap:36px;}
  .hero h1{font-size:clamp(28px,3.6vw,42px);}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-main{grid-column:span 2;grid-row:span 1;min-height:auto;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .case-row{gap:32px;}
}
@media (max-width:991px){
  .sidebar{display:none;}
  .mobile-bar{display:flex;}
  .main-wrap{margin-left:0;padding-top:60px;}
  .hero{padding:56px 0 72px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-sub{max-width:100%;}
  .hero-badges{position:static;width:100%;margin-top:16px;grid-template-columns:repeat(4,1fr);}
  .hero-badge:nth-child(even){transform:none;}
  .hero-visual{margin-bottom:10px;}
  .section{padding:64px 0;}
  .stats-grid{grid-template-columns:repeat(2,1fr);gap:26px 0;}
  .stat{border-left:0;padding:0;}
  .case-row{grid-template-columns:1fr;gap:22px;}
  .case-row.reverse .case-media{order:0;}
  .contact-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .plans{grid-template-columns:1fr;}
  .plan:nth-child(1),.plan:nth-child(2),.plan:nth-child(3){margin-top:0;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  body{font-size:16px;}
  .hero h1{font-size:clamp(26px,7vw,34px);}
  .hero-badges{grid-template-columns:repeat(2,1fr);}
  .bento{grid-template-columns:1fr;gap:16px;}
  .bento-main{grid-column:span 1;padding:28px 24px;}
  .news-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .btn{width:100%;justify-content:center;}
  .hero-actions{flex-direction:column;}
  .sec-head{flex-direction:column;align-items:flex-start;}
  .form-card,.info-card{padding:24px 20px;}
  ul.accordion .accordion-content{padding-left:22px;}
  .foot-grid{grid-template-columns:1fr;}
  .case-metrics{gap:10px;}
}
@media (max-width:479px){
  .section{padding:44px 0;}
  .hero{padding:44px 0 56px;}
  .hero::before,.hero::after{display:none;}
  .news-grid{gap:16px;}
  .news-body{padding:16px;}
  .cta-band{padding:44px 0;}
  .foot-bottom{flex-direction:column;}
  .bento-card,#news .news-card,.plan,#faq .accordion-item{border-radius:16px;}
}

/* roulang page: article */
:root{
  --brand-900:#07231B;
  --brand-800:#0B2E23;
  --brand-700:#124534;
  --brand-600:#1A5C46;
  --brand-500:#22795B;
  --lime-400:#C9F24E;
  --lime-300:#DBFA8A;
  --amber-500:#F0A03C;
  --amber-600:#D98026;
  --bg:#F5F3EC;
  --surface:#FFFFFF;
  --surface-2:#EDEAE1;
  --surface-3:#E3E0D4;
  --ink:#0F1F1A;
  --ink-2:#4B5A54;
  --ink-3:#7E8A85;
  --line:#DEDBD1;
  --line-strong:#C6C2B4;
  --r-card:20px;
  --r-card-lg:24px;
  --r-img:16px;
  --r-btn:14px;
  --sh-1:0 1px 2px rgba(7,35,27,.06);
  --sh-2:0 18px 40px -22px rgba(7,35,27,.28);
  --ease:.25s cubic-bezier(.4,0,.2,1);
  --nav-w:248px;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease);}
a:hover{color:var(--brand-800);text-decoration:none;}
p{margin:0 0 16px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}

/* ============ 布局骨架 ============ */
.layout{min-height:100vh;}
.side-nav{
  position:fixed;top:0;left:0;width:var(--nav-w);height:100vh;
  background:var(--brand-800);
  background-image:radial-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:4px 4px;
  border-right:1px solid var(--line-strong);
  display:flex;flex-direction:column;
  padding:26px 0 20px;
  overflow-y:auto;
  z-index:40;
}
.side-brand{display:flex;align-items:center;gap:12px;padding:0 20px 22px;margin-bottom:14px;border-bottom:1px solid rgba(255,255,255,.12);}
.brand-mark{
  flex:0 0 auto;width:44px;height:44px;border-radius:14px;
  background:var(--lime-400);color:var(--brand-900);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{color:#fff;font-size:17px;font-weight:700;letter-spacing:.01em;}
.brand-text span{color:rgba(227,224,212,.6);font-size:11px;letter-spacing:.16em;margin-top:3px;}

.side-nav .nav-item{
  position:relative;display:flex;align-items:center;gap:12px;
  padding:0 20px;height:48px;
  color:rgba(227,224,212,.82);font-size:14.5px;
  transition:background-color var(--ease),color var(--ease),transform var(--ease);
}
.side-nav .nav-item i{width:18px;text-align:center;font-size:14px;opacity:.9;}
.side-nav .nav-item:hover{background:rgba(255,255,255,.06);color:#fff;transform:translateX(2px);}
.side-nav .nav-item.is-active{
  background:rgba(201,242,78,.10);color:#fff;
  box-shadow:inset 4px 0 0 var(--lime-400);
}
.side-nav .nav-item.is-active i{color:var(--lime-400);opacity:1;}

.side-foot{margin-top:auto;padding:22px 20px 0;border-top:1px solid rgba(255,255,255,.12);}
.side-foot .side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--r-btn);
  background:var(--lime-400);color:var(--brand-900);
  font-size:14px;font-weight:700;
}
.side-foot .side-cta:hover{background:var(--lime-300);color:var(--brand-900);transform:translateY(-1px);}
.side-foot .side-note{margin-top:14px;font-size:12px;line-height:1.7;color:rgba(227,224,212,.55);}

.topbar{display:none;}

.main-wrap{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.main-wrap main{flex:1 0 auto;}

/* ============ 面包屑 ============ */
.crumb-bar{
  background:var(--surface);border-bottom:1px solid var(--line);
}
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-2);
  padding:16px 0;white-space:nowrap;overflow:hidden;
}
.crumb a{color:var(--brand-600);}
.crumb a:hover{color:var(--brand-800);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;}
.crumb .sep{color:var(--line-strong);}
.crumb .now{color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;}

/* ============ 文章头区 ============ */
.article-hero{
  position:relative;
  background:linear-gradient(135deg,var(--brand-800) 0%,var(--brand-700) 55%,var(--brand-600) 100%);
  color:#fff;
  padding:64px 0 56px;
  overflow:hidden;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.article-hero::after{
  content:"";position:absolute;right:-160px;bottom:-220px;width:560px;height:560px;
  border-radius:50%;border:70px solid rgba(201,242,78,.10);
  pointer-events:none;
}
.article-hero .container{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(7,35,27,.42);border:1px solid rgba(201,242,78,.35);
  color:var(--lime-300);font-size:12.5px;letter-spacing:.1em;
  padding:6px 14px;border-radius:999px;margin-bottom:20px;
}
.hero-tag .dot{width:6px;height:6px;border-radius:50%;background:var(--lime-400);}
.article-hero h1{
  color:#fff;font-size:clamp(26px,3.4vw,42px);line-height:1.25;font-weight:800;
  letter-spacing:-.015em;max-width:900px;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:24px;font-size:13.5px;color:rgba(255,255,255,.76);
}
.article-meta span{display:inline-flex;align-items:center;gap:8px;}
.article-meta i{color:var(--lime-400);font-size:13px;}

/* ============ 正文区 ============ */
.article-shell{padding:56px 0 72px;}
.article-body{
  max-width:760px;margin:0 auto;
  font-size:17px;line-height:1.9;color:var(--ink);
  background:transparent;
}
.article-body h2{
  font-size:clamp(21px,2.2vw,27px);line-height:1.35;font-weight:700;
  margin:44px 0 18px;padding-left:14px;border-left:5px solid var(--lime-400);
}
.article-body h3{font-size:19px;line-height:1.45;font-weight:700;margin:32px 0 12px;}
.article-body p{margin:0 0 20px;color:#22312C;}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:22px;}
.article-body ul{list-style:none;padding-left:0;}
.article-body ul li{position:relative;padding-left:24px;margin-bottom:10px;color:#22312C;}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:12px;width:8px;height:8px;border-radius:2px;
  background:var(--lime-400);box-shadow:0 0 0 3px rgba(201,242,78,.25);
}
.article-body ol{list-style:decimal;}
.article-body ol li{margin-bottom:10px;color:#22312C;}
.article-body ol li::marker{color:var(--brand-600);font-weight:700;}
.article-body blockquote{
  margin:28px 0;padding:20px 24px;
  background:var(--surface);border-left:4px solid var(--brand-600);
  border-radius:var(--r-img);color:var(--ink-2);font-size:16px;
}
.article-body img{
  border-radius:var(--r-img);margin:26px auto;box-shadow:var(--sh-1);
}
.article-body figure{margin:26px 0;}
.article-body figcaption{
  font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;
}
.article-body a{color:var(--brand-600);border-bottom:1px solid var(--brand-600);}
.article-body a:hover{color:var(--brand-800);border-bottom-color:var(--brand-800);}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;
  display:block;overflow-x:auto;white-space:nowrap;
}
.article-body th,.article-body td{
  border:1px solid var(--line);padding:11px 14px;text-align:left;color:var(--ink-2);
}
.article-body th{background:var(--surface-2);color:var(--ink);font-weight:700;}
.article-body code{
  background:var(--surface-2);border-radius:6px;padding:2px 7px;font-size:14.5px;
  font-family:"DIN Alternate","Inter",ui-monospace,monospace;color:var(--brand-700);
}
.article-body pre{
  background:var(--brand-900);color:#DFF3E8;border-radius:var(--r-img);
  padding:18px 20px;overflow-x:auto;font-size:14px;line-height:1.75;
}
.article-body pre code{background:none;color:inherit;padding:0;}

.empty-state{
  max-width:760px;margin:0 auto;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card-lg);
  padding:64px 32px;box-shadow:var(--sh-1);
}
.empty-state i{font-size:36px;color:var(--line-strong);}
.empty-state h2{font-size:22px;margin:18px 0 10px;}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:24px;}

/* ============ 标签 / 要点 ============ */
.article-extra{max-width:760px;margin:0 auto;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0;}
.tag-row .tag{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--surface);border:1px solid var(--line);border-radius:999px;
  padding:7px 15px;font-size:13px;color:var(--ink-2);
  transition:border-color var(--ease),color var(--ease),background-color var(--ease);
}
.tag-row .tag:hover{border-color:var(--brand-600);color:var(--brand-700);background:var(--surface-2);}

.recap{
  margin-top:32px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:26px 28px;box-shadow:var(--sh-1);
}
.recap h3{font-size:16px;margin-bottom:14px;display:flex;align-items:center;gap:10px;}
.recap h3 i{color:var(--brand-600);}
.recap ul li{
  position:relative;padding-left:22px;font-size:15px;color:var(--ink-2);margin-bottom:9px;
}
.recap ul li::before{
  content:"";position:absolute;left:0;top:11px;width:12px;height:2px;background:var(--lime-400);
}

/* ============ 相关推荐 ============ */
.related{
  background:var(--surface);border-top:1px solid var(--line);
  padding:72px 0;
}
.sec-head-2{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.eyebrow{
  display:block;font-size:12px;letter-spacing:.16em;color:var(--brand-600);
  font-weight:700;margin-bottom:10px;text-transform:uppercase;
}
.sec-head-2 h2{font-size:clamp(22px,2.6vw,32px);line-height:1.25;}
.more-link{
  font-size:14px;font-weight:700;color:var(--brand-600);
  display:inline-flex;align-items:center;gap:8px;
}
.more-link:hover{color:var(--brand-800);gap:12px;}

.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rec-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);box-shadow:var(--sh-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.rec-card:hover{transform:translateY(-2px);box-shadow:var(--sh-2);border-color:var(--line-strong);}
.rec-thumb{position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--surface-2);}
.rec-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.rec-card:hover .rec-thumb img{transform:scale(1.04);}
.rec-cat{
  position:absolute;left:12px;top:12px;
  background:rgba(7,35,27,.82);color:var(--lime-300);
  font-size:12px;padding:5px 11px;border-radius:999px;letter-spacing:.04em;
}
.rec-body{padding:18px 20px 22px;}
.rec-body h3{font-size:16.5px;line-height:1.5;font-weight:700;color:var(--ink);}
.rec-card:hover .rec-body h3{color:var(--brand-700);}

/* ============ 返回入口 ============ */
.back-strip{
  background:var(--brand-900);
  background-image:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  padding:44px 0;
}
.back-strip .container{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;}
.back-strip p{color:rgba(255,255,255,.8);font-size:15px;margin:0;max-width:640px;}
.back-strip .btn-lime{flex:0 0 auto;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  font-size:15px;font-weight:700;cursor:pointer;border:0;
  transition:background-color var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
}
.btn-lime{background:var(--lime-400);color:var(--brand-900);}
.btn-lime:hover{background:var(--brand-800);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-700);}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-800);}
.btn-white{background:#fff;color:var(--brand-800);}
.btn-white:hover{background:var(--lime-400);color:var(--brand-900);transform:translateY(-1px);}

/* ============ 页脚 ============ */
.site-foot{
  background:var(--brand-800);
  background-image:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  color:rgba(227,224,212,.78);
  padding:64px 0 26px;
  margin-top:0;
}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;}
.brand-block{display:inline-flex;align-items:center;gap:12px;margin-bottom:18px;}
.foot-brand p{font-size:14px;line-height:1.85;color:rgba(227,224,212,.68);margin:0;max-width:340px;}
.foot-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700;letter-spacing:.02em;}
.foot-col ul li{margin-bottom:11px;font-size:14px;}
.foot-col ul li a{color:rgba(227,224,212,.78);}
.foot-col ul li a:hover{color:var(--lime-400);}
.foot-col ul li span{color:rgba(227,224,212,.68);}
.foot-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(227,224,212,.6);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--nav-w:208px;}
  .container{padding:0 32px;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px;}
}
@media (max-width:991px){
  .side-nav{display:none;}
  .topbar{
    display:flex;align-items:center;justify-content:space-between;
    position:fixed;top:0;left:0;right:0;height:60px;padding:0 20px;
    background:var(--brand-800);border-bottom:1px solid rgba(255,255,255,.12);z-index:60;
  }
  .topbar .brand-mark{width:36px;height:36px;border-radius:11px;font-size:13px;}
  .topbar .brand-text b{font-size:15px;}
  .topbar .brand-text span{font-size:10px;}
  .menu-toggle{
    width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
    background:transparent;color:#fff;font-size:17px;cursor:pointer;
    display:flex;align-items:center;justify-content:center;
  }
  .menu-toggle:hover{background:rgba(255,255,255,.08);}
  .main-wrap{margin-left:0;padding-top:60px;}
  .drawer{
    display:none;position:fixed;top:60px;left:0;right:0;bottom:0;
    background:var(--brand-800);z-index:55;padding:20px;overflow-y:auto;
  }
  .drawer.is-open{display:block;}
  .drawer .nav-item{
    display:flex;align-items:center;gap:14px;height:56px;padding:0 16px;
    color:rgba(227,224,212,.85);font-size:17px;border-radius:14px;
  }
  .drawer .nav-item.is-active{background:rgba(201,242,78,.10);color:#fff;box-shadow:inset 4px 0 0 var(--lime-400);}
  .drawer .nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
  .drawer .side-cta{
    margin-top:18px;display:flex;align-items:center;justify-content:center;gap:8px;
    height:48px;border-radius:var(--r-btn);background:var(--lime-400);color:var(--brand-900);font-weight:700;
  }
  body.drawer-open{overflow:hidden;}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .article-shell{padding:44px 0 56px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .article-hero{padding:46px 0 40px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin:34px 0 14px;}
  .rec-grid{grid-template-columns:1fr;}
  .related{padding:52px 0;}
  .back-strip .container{flex-direction:column;align-items:flex-start;}
  .btn{width:100%;}
  .back-strip .btn-lime{width:100%;}
}
@media (max-width:519px){
  .foot-grid{grid-template-columns:1fr;gap:24px;}
  .foot-bottom{flex-direction:column;gap:6px;}
  .article-hero h1{font-size:24px;}
  .crumb{font-size:12px;}
  .article-extra{padding:0;}
  .recap{padding:20px 18px;}
}
@media (max-width:479px){
  .article-shell{padding:36px 0 44px;}
  .rec-card{border-radius:16px;}
  .recap{border-radius:16px;}
}

/* roulang page: category1 */
:root{
  --brand-900:#07231B;
  --brand-800:#0B2E23;
  --brand-700:#124534;
  --brand-600:#1A5C46;
  --brand-500:#22795B;
  --lime-400:#C9F24E;
  --lime-300:#DBFA8A;
  --amber-500:#F0A03C;
  --amber-600:#D98026;
  --bg:#F5F3EC;
  --surface:#FFFFFF;
  --surface-2:#EDEAE1;
  --surface-3:#E3E0D4;
  --ink:#0F1F1A;
  --ink-2:#4B5A54;
  --ink-3:#7E8A85;
  --line:#DEDBD1;
  --line-strong:#C6C2B4;
  --r-card:20px;
  --r-card-lg:24px;
  --r-img:16px;
  --r-btn:14px;
  --shadow-1:0 1px 2px rgba(7,35,27,.06);
  --shadow-2:0 18px 40px -22px rgba(7,35,27,.28);
  --ease:.25s cubic-bezier(.4,0,.2,1);
  --rail:248px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Inter",system-ui,sans-serif;
}

/* ---------- reset 与基础排版 ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.nav-locked{overflow:hidden;}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);}
a:hover{color:var(--brand-800);text-decoration:underline;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul{list-style:none;padding:0;}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,36px);line-height:1.25;font-weight:700;letter-spacing:-.01em;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
p{font-size:16px;line-height:1.85;color:var(--ink-2);}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px;}

/* ---------- 布局容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
.page-main{margin-left:var(--rail);min-height:100vh;display:flex;flex-direction:column;}
.section{padding:88px 0;}
.section + .section{border-top:1px solid var(--line);}
.section-head{max-width:760px;margin-bottom:44px;}
.section-head h2{margin-bottom:14px;}
.section-head p{font-size:16px;}
.eyebrow{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;
  color:var(--brand-600);margin-bottom:14px;
}
.eyebrow.light{color:var(--lime-400);}

/* ---------- 左侧竖向导航 ---------- */
.side-rail{
  position:fixed;top:0;left:0;bottom:0;width:var(--rail);
  background:var(--brand-800);
  background-image:
    radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    radial-gradient(rgba(255,255,255,.035) 1px, transparent 1px);
  background-size:14px 14px, 22px 22px;
  background-position:0 0, 7px 9px;
  border-right:1px solid var(--line-strong);
  display:flex;flex-direction:column;
  padding:26px 0 20px;
  z-index:60;
  overflow-y:auto;
}
.brand-block{
  display:flex;align-items:center;gap:12px;
  padding:0 20px 22px;margin:0 0 18px;
  border-bottom:1px solid rgba(255,255,255,.12);
}
a.brand-block{color:#fff;}
a.brand-block:hover{text-decoration:none;color:#fff;}
.brand-mark{
  flex:0 0 44px;width:44px;height:44px;border-radius:12px;
  background:var(--lime-400);color:var(--brand-900);
  font-size:12px;font-weight:800;letter-spacing:.02em;
  display:grid;place-items:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:17px;color:#fff;font-weight:700;}
.brand-text span{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.46);font-family:var(--font-num);}
.side-nav{display:flex;flex-direction:column;gap:3px;padding:0 12px;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:11px;
  height:48px;padding:0 12px;border-radius:12px;
  font-size:14px;color:rgba(227,224,212,.82);
}
.side-nav a i{width:16px;text-align:center;font-size:14px;opacity:.85;}
.side-nav a:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none;transform:translateX(2px);}
.side-nav a.is-active{background:rgba(201,242,78,.10);color:#fff;}
.side-nav a.is-active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:4px;
  background:var(--lime-400);border-radius:0 4px 4px 0;
}
.side-foot{
  margin-top:auto;padding:24px 20px 0;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-direction:column;gap:12px;
}
.side-note{font-size:12px;color:rgba(255,255,255,.45);line-height:1.6;}

/* ---------- 移动端顶部条与抽屉 ---------- */
.mobile-bar{
  display:none;position:fixed;top:0;left:0;right:0;height:60px;
  background:var(--brand-800);border-bottom:1px solid rgba(255,255,255,.12);
  align-items:center;justify-content:space-between;
  padding:0 18px;z-index:70;
}
.mobile-bar .brand-block{padding:0;margin:0;border:0;gap:10px;}
.mobile-bar .brand-mark{width:36px;height:36px;flex:0 0 36px;font-size:10px;}
.mobile-bar .brand-text b{font-size:15px;}
.mobile-bar .brand-text span{font-size:9px;}
.drawer-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#fff;font-size:17px;display:grid;place-items:center;cursor:pointer;
}
.drawer{
  position:fixed;inset:0;z-index:80;background:var(--brand-800);
  transform:translateY(-100%);transition:transform .35s cubic-bezier(.4,0,.2,1);
  padding:22px 20px 32px;display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{font-size:13px;letter-spacing:.14em;color:rgba(255,255,255,.5);}
.drawer a.drawer-link{
  display:flex;align-items:center;gap:12px;min-height:52px;padding:0 12px;
  border-radius:14px;font-size:19px;font-weight:600;color:rgba(227,224,212,.88);
}
.drawer a.drawer-link:hover{background:rgba(255,255,255,.07);color:#fff;text-decoration:none;}
.drawer a.drawer-link.is-active{background:rgba(201,242,78,.12);color:#fff;}
.drawer-cta{margin-top:22px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;font-family:var(--font-cn);
  border:1.5px solid transparent;cursor:pointer;
  transition:all var(--ease);
}
.btn-primary{background:var(--lime-400);color:var(--brand-900);}
.btn-primary:hover{background:var(--brand-800);color:#fff;text-decoration:none;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-900);text-decoration:none;}
.btn-lime{background:var(--lime-400);color:var(--brand-900);}
.btn-lime:hover{background:#fff;color:var(--brand-900);text-decoration:none;transform:translateY(-1px);}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}

/* ---------- 分类头区 ---------- */
.cat-hero{
  position:relative;color:#fff;overflow:hidden;
  background-image:
    linear-gradient(118deg, rgba(7,35,27,.95) 0%, rgba(18,69,52,.86) 52%, rgba(34,121,91,.78) 100%),
    url('/assets/images/backpic/back-2.png');
  background-size:cover,cover;
  background-position:center,center;
  padding:64px 0 72px;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.9;
}
.cat-hero .container{position:relative;z-index:2;}
.crumbs{display:flex;gap:8px;align-items:center;font-size:13px;color:rgba(255,255,255,.6);margin-bottom:26px;}
.crumbs a{color:rgba(255,255,255,.82);}
.crumbs a:hover{color:var(--lime-400);text-decoration:none;}
.crumbs .sep{color:rgba(255,255,255,.34);}
.crumbs .current{color:rgba(255,255,255,.6);}
.hero-pill{
  display:inline-flex;align-items:center;gap:9px;
  background:rgba(7,35,27,.6);border:1px solid rgba(201,242,78,.35);
  border-radius:999px;padding:7px 16px;font-size:13px;color:#fff;margin-bottom:20px;
}
.hero-pill::before{content:"";width:7px;height:7px;border-radius:999px;background:var(--lime-400);}
.cat-hero h1{max-width:900px;color:#fff;margin-bottom:20px;}
.cat-hero .lead{
  max-width:760px;font-size:16px;line-height:1.95;color:rgba(255,255,255,.78);margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px;}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;}
.hero-trust span{display:inline-flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.82);}
.hero-trust i{color:var(--lime-400);font-size:13px;}

/* ---------- 交替图文条目 ---------- */
.alt-row{
  padding:56px 0;border-bottom:1px solid var(--line);
}
.alt-row:last-child{border-bottom:0;padding-bottom:8px;}
.alt-row:first-child{padding-top:8px;}
.alt-media{position:relative;padding-right:48px;}
.alt-row.is-flip .alt-media{padding-right:0;padding-left:48px;}
.alt-media .media-frame{
  position:relative;border-radius:var(--r-card-lg);overflow:hidden;
  box-shadow:var(--shadow-2);background:var(--surface-3);
}
.alt-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.alt-row:hover .alt-media img{transform:scale(1.04);}
.alt-media .media-tag{
  position:absolute;left:16px;top:16px;z-index:2;
  background:rgba(7,35,27,.82);color:#fff;border-radius:999px;
  font-size:12px;padding:6px 14px;letter-spacing:.04em;
}
.alt-body{padding-left:8px;}
.alt-row.is-flip .alt-body{padding-left:0;padding-right:8px;}
.alt-tag{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.12em;
  color:var(--brand-600);background:var(--surface-2);
  border-radius:999px;padding:5px 14px;margin-bottom:16px;
}
.alt-body h3{margin-bottom:14px;color:var(--ink);}
.alt-body p{font-size:15.5px;margin-bottom:18px;}
.alt-list{margin-bottom:20px;display:flex;flex-direction:column;gap:10px;}
.alt-list li{
  position:relative;padding-left:24px;font-size:14.5px;color:var(--ink-2);
}
.alt-list li::before{
  content:"";position:absolute;left:0;top:9px;width:10px;height:10px;
  border-left:2.5px solid var(--lime-400);border-bottom:2.5px solid var(--lime-400);
  transform:rotate(-45deg);
}
.text-link{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:var(--brand-600);
  border-bottom:1px solid transparent;padding-bottom:2px;
}
.text-link:hover{color:var(--brand-800);text-decoration:none;border-bottom-color:var(--brand-800);}
.text-link i{font-size:12px;transition:transform var(--ease);}
.text-link:hover i{transform:translateX(3px);}

/* ---------- 要点清单 ---------- */
.point-panel{
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-card-lg);
  padding:44px 40px;
}
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 28px;}
.point-grid li{
  display:flex;gap:12px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  padding:16px 18px;font-size:14.5px;color:var(--ink-2);line-height:1.7;
  transition:box-shadow var(--ease),transform var(--ease);
}
.point-grid li:hover{box-shadow:var(--shadow-1);transform:translateY(-2px);}
.point-grid i{color:var(--brand-600);font-size:14px;margin-top:5px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:940px;}
ul.accordion.acc-custom{
  background:transparent;border:0;margin:0;
}
ul.accordion.acc-custom .accordion-item{
  position:relative;border:1px solid var(--line);background:var(--surface);
  border-radius:16px;margin-bottom:12px;overflow:hidden;
  transition:box-shadow var(--ease);
}
ul.accordion.acc-custom .accordion-item:hover{box-shadow:var(--shadow-1);}
ul.accordion.acc-custom .accordion-item.is-active::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;
  background:var(--lime-400);border-radius:0 4px 4px 0;
}
ul.accordion.acc-custom .accordion-item.is-active{box-shadow:var(--shadow-1);}
.faq-title{margin:0;}
ul.accordion.acc-custom .accordion-title{
  display:flex;align-items:center;gap:16px;
  padding:20px 22px;border:0;background:transparent;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;
  font-family:var(--font-cn);
}
ul.accordion.acc-custom .accordion-title::before{display:none;content:none;}
ul.accordion.acc-custom .accordion-title:hover,
ul.accordion.acc-custom .accordion-title:focus{
  background:var(--surface-2);color:var(--ink);text-decoration:none;
}
.faq-num{font-family:var(--font-num);font-size:13px;color:var(--line-strong);font-weight:700;letter-spacing:.06em;}
.faq-text{flex:1 1 auto;}
.faq-icon{
  position:relative;flex:0 0 28px;width:28px;height:28px;border-radius:999px;
  border:1px solid var(--line-strong);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand-700);
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:12px;height:2px;}
.faq-icon::after{width:2px;height:12px;transition:transform var(--ease),opacity var(--ease);}
ul.accordion.acc-custom .accordion-item.is-active .faq-icon{border-color:var(--brand-600);background:var(--lime-400);}
ul.accordion.acc-custom .accordion-item.is-active .faq-icon::after{opacity:0;transform:translate(-50%,-50%) rotate(90deg);}
ul.accordion.acc-custom .accordion-item.is-active .faq-icon::before{background:var(--brand-900);}
ul.accordion.acc-custom .accordion-content{
  border-top:1px dashed var(--line-strong);
  padding:18px 22px 24px 62px;background:transparent;color:var(--ink-2);
  font-size:15px;line-height:1.85;
}
ul.accordion.acc-custom .accordion-content p{font-size:15px;margin:0;}

/* ---------- CTA ---------- */
.cta-band{
  background:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  color:#fff;padding:64px 0;
}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap;
}
.cta-inner h2{color:#fff;margin-bottom:12px;max-width:640px;}
.cta-inner p{color:rgba(255,255,255,.72);max-width:620px;font-size:15.5px;}

/* ---------- 页脚 ---------- */
.site-foot{
  background:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  color:rgba(255,255,255,.72);
  padding:64px 0 26px;
  border-top:1px solid rgba(255,255,255,.10);
}
.site-foot .brand-block{padding:0;margin:0 0 18px;border:0;}
.foot-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.12);
}
.foot-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px;}
.foot-col h4{font-size:15px;color:#fff;margin:0 0 16px;font-weight:600;letter-spacing:.02em;}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col li{font-size:14px;color:rgba(255,255,255,.66);line-height:1.7;}
.foot-col a{color:rgba(255,255,255,.66);}
.foot-col a:hover{color:var(--lime-400);text-decoration:none;}
.foot-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding-top:22px;font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--rail:208px;}
  .container{padding:0 32px;}
  .alt-media{padding-right:32px;}
  .alt-row.is-flip .alt-media{padding-left:32px;}
  .section{padding:72px 0;}
}
@media (max-width:991px){
  .page-main{margin-left:0;padding-top:60px;}
  .side-rail{display:none;}
  .mobile-bar{display:flex;}
  .container{padding:0 20px;}
  .cat-hero{padding:44px 0 54px;}
  .alt-row{padding:44px 0;}
  .alt-media,.alt-row.is-flip .alt-media{padding:0;margin-bottom:24px;}
  .alt-body,.alt-row.is-flip .alt-body{padding:0;}
  .point-grid{grid-template-columns:1fr;}
  .point-panel{padding:30px 22px;}
  .section{padding:56px 0;}
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  ul.accordion.acc-custom .accordion-content{padding:16px 18px 20px 22px;}
}
@media (max-width:767px){
  .container{padding:0 18px;}
  .hero-actions .btn{width:100%;}
  .hero-trust{gap:14px;}
  .cta-inner{gap:24px;}
  .cta-inner .btn{width:100%;}
  .alt-media img{aspect-ratio:3/2;}
}
@media (max-width:520px){
  body{font-size:16px;}
  .section{padding:44px 0;}
  .cat-hero{padding:34px 0 44px;}
  .alt-row{padding:36px 0;}
  .point-panel{padding:22px 16px;border-radius:16px;}
  .point-grid li{border-radius:14px;}
  .foot-grid{grid-template-columns:1fr;}
  .foot-bottom{flex-direction:column;gap:8px;}
  ul.accordion.acc-custom .accordion-title{font-size:16px;padding:16px 16px;gap:12px;}
  .faq-num{display:none;}
}

/* roulang page: category2 */
/* ============ 1. 设计变量 ============ */
:root{
  --brand-900:#07231B;
  --brand-800:#0B2E23;
  --brand-700:#124534;
  --brand-600:#1A5C46;
  --brand-500:#22795B;
  --lime-400:#C9F24E;
  --lime-300:#DBFA8A;
  --amber-500:#F0A03C;
  --amber-600:#D98026;
  --bg:#F5F3EC;
  --surface:#FFFFFF;
  --surface-2:#EDEAE1;
  --surface-3:#E3E0D4;
  --ink:#0F1F1A;
  --ink-2:#4B5A54;
  --ink-3:#7E8A85;
  --line:#DEDBD1;
  --line-strong:#C6C2B4;
  --radius-card:20px;
  --radius-lg:24px;
  --radius-img:16px;
  --radius-btn:14px;
  --shadow-1:0 1px 2px rgba(7,35,27,.06);
  --shadow-2:0 18px 40px -22px rgba(7,35,27,.28);
  --ease:.25s cubic-bezier(.4,0,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Inter",system-ui,sans-serif;
}
/* ============ 2. reset 与基础排版 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding-left:248px;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:var(--ease);}
a:hover{color:var(--brand-800);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 14px;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,36px);line-height:1.25;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:16px;line-height:1.5;font-weight:600;}
button{font-family:inherit;cursor:pointer;}
input,select,textarea{font-family:inherit;}
::selection{background:var(--lime-400);color:var(--brand-900);}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px;}
/* ============ 3. 布局容器 ============ */
.container{max-width:1200px;margin:0 auto;padding:0 40px;width:100%;}
.main{display:block;}
.sec{padding:88px 0;}
.main > section + section{border-top:1px solid var(--line);}
.sec-alt{background:var(--surface-2);}
.sec-head{margin-bottom:40px;max-width:760px;}
.sec-tag{
  display:inline-block;font-family:var(--font-num);font-size:12.5px;font-weight:800;
  letter-spacing:.14em;color:var(--brand-500);margin-bottom:14px;text-transform:uppercase;
}
.sec-lead{color:var(--ink-2);font-size:16px;margin:14px 0 0;max-width:640px;}
/* ============ 4. 导航 ============ */
.side-bar{
  position:fixed;left:0;top:0;width:248px;height:100vh;z-index:60;
  background-color:var(--brand-800);
  background-image:radial-gradient(rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:4px 4px;
  border-right:1px solid rgba(198,194,180,.18);
  display:flex;flex-direction:column;overflow-y:auto;
}
.brand-block{display:flex;align-items:center;gap:12px;text-decoration:none;}
.brand-block:hover{text-decoration:none;}
.brand-mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;background:var(--lime-400);
  color:var(--brand-900);display:grid;place-items:center;font-weight:800;font-size:18px;
  font-family:var(--font-cn);box-shadow:0 0 0 1px rgba(201,242,78,.35);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:17px;font-weight:800;color:#fff;letter-spacing:.01em;}
.brand-text span{font-family:var(--font-num);font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.48);}
.side-brand{padding:24px 20px 20px;border-bottom:1px solid rgba(255,255,255,.08);}
.side-nav{display:flex;flex-direction:column;gap:4px;padding:16px 14px;flex:1;}
.side-nav a{
  display:flex;align-items:center;gap:12px;height:48px;padding:0 12px;border-radius:12px;
  color:rgba(227,224,212,.82);font-size:15px;line-height:1.3;transition:var(--ease);
}
.side-nav a i{width:18px;text-align:center;font-size:15px;color:rgba(201,242,78,.72);}
.side-nav a:hover{background:rgba(255,255,255,.06);color:#fff;text-decoration:none;transform:translateX(2px);}
.side-nav a.is-active{
  background:rgba(201,242,78,.10);color:#fff;box-shadow:inset 4px 0 0 var(--lime-400);
}
.side-nav a.is-active i{color:var(--lime-400);}
.side-foot{padding:16px 20px 22px;border-top:1px solid rgba(255,255,255,.08);}
.side-cta{
  display:block;text-align:center;background:var(--lime-400);color:var(--brand-900);
  font-weight:700;font-size:14px;padding:12px 14px;border-radius:var(--radius-btn);transition:var(--ease);
}
.side-cta:hover{background:var(--brand-900);color:#fff;text-decoration:none;transform:translateY(-1px);}
.side-meta{display:block;margin-top:12px;font-size:12px;color:rgba(255,255,255,.42);}
.mobile-bar{
  display:none;position:fixed;left:0;top:0;width:100%;height:60px;z-index:70;
  background:var(--brand-800);align-items:center;justify-content:space-between;
  padding:0 16px;border-bottom:1px solid rgba(255,255,255,.08);
}
.mobile-bar .brand-mark{width:34px;height:34px;flex:0 0 34px;font-size:16px;border-radius:10px;}
.mobile-bar .brand-text b{font-size:15px;}
.mobile-bar .brand-text span{display:none;}
.nav-toggle{
  width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.22);
  background:transparent;color:#fff;font-size:17px;display:grid;place-items:center;
}
.drawer{
  position:fixed;inset:0;z-index:90;background:var(--brand-800);
  padding:20px 20px 32px;transform:translateY(-100%);transition:transform .35s cubic-bezier(.4,0,.2,1);
  display:flex;flex-direction:column;overflow-y:auto;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:26px;}
.drawer-close{
  width:44px;height:44px;border-radius:12px;background:transparent;color:#fff;
  border:1px solid rgba(255,255,255,.22);font-size:18px;
}
.drawer-nav{display:flex;flex-direction:column;gap:6px;flex:1;}
.drawer-nav a{
  display:block;padding:14px 16px;border-radius:14px;color:rgba(255,255,255,.85);
  font-size:18px;font-weight:600;border-left:4px solid transparent;
}
.drawer-nav a.is-active{background:rgba(201,242,78,.10);border-left-color:var(--lime-400);color:#fff;}
.drawer-cta{display:block;text-align:center;margin-top:20px;}
/* ============ 5. Hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;padding:96px 0 84px;
  background:linear-gradient(135deg,var(--brand-800) 0%,var(--brand-700) 55%,var(--brand-600) 100%);
}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:48px 48px;
}
.hero::after{
  content:"";position:absolute;right:-180px;bottom:-240px;width:640px;height:640px;border-radius:50%;
  border:2px solid rgba(201,242,78,.12);box-shadow:inset 0 0 0 60px rgba(201,242,78,.05);pointer-events:none;
}
.hero .container{position:relative;z-index:2;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;
  background:var(--brand-900);border:1px solid rgba(201,242,78,.28);
  font-size:13px;font-weight:600;color:var(--lime-300);margin-bottom:22px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--lime-400);display:inline-block;}
.hero h1{color:#fff;max-width:640px;}
.hero-sub{color:rgba(255,255,255,.78);font-size:18px;line-height:1.7;margin:20px 0 28px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:30px;}
.hero-mini{display:flex;flex-wrap:wrap;gap:22px;font-size:13.5px;color:rgba(255,255,255,.72);}
.hero-mini li{display:flex;align-items:center;gap:8px;}
.hero-mini i{color:var(--lime-400);font-size:13px;}
.hero-visual{position:relative;}
.hero-visual img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:var(--radius-lg);
  box-shadow:var(--shadow-2);filter:saturate(1.02);
}
.hero-visual::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius-lg);
  background:rgba(7,35,27,.08);pointer-events:none;
}
.hero-badges{
  position:absolute;right:-10px;bottom:-34px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:10px;width:min(330px,88%);
}
.hb{
  background:rgba(255,255,255,.94);border-radius:12px;padding:12px 14px;
  box-shadow:var(--shadow-2);border-left:3px solid var(--lime-400);
}
.hb:nth-child(2){transform:translateY(12px);}
.hb:nth-child(3){transform:translateY(-6px);}
.hb b{display:block;font-family:var(--font-num);font-size:22px;font-weight:800;color:var(--brand-700);font-variant-numeric:tabular-nums;line-height:1.2;}
.hb span{display:block;font-size:12px;color:var(--ink-2);line-height:1.5;margin-top:2px;}
/* ============ 6. 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 26px;border-radius:var(--radius-btn);font-size:15px;font-weight:700;
  border:1.5px solid transparent;transition:var(--ease);text-decoration:none;line-height:1.2;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--lime-400);color:var(--brand-900);}
.btn-primary:hover{background:var(--brand-800);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--brand-700);color:var(--brand-700);}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-800);}
.on-dark .btn-ghost,.hero .btn-ghost,.cta-band .btn-ghost{border-color:rgba(255,255,255,.42);color:#fff;}
.on-dark .btn-ghost:hover,.hero .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.1);color:#fff;}
.btn-block{width:100%;}
.tag-pill{
  display:inline-block;padding:3px 10px;border-radius:999px;background:var(--surface-2);
  color:var(--brand-600);font-size:12px;font-weight:600;border:1px solid var(--line);
}
/* ============ 7. 序号列表 + 贴边说明 ============ */
.num-list{border-top:1px solid var(--line);}
.num-row{
  display:grid;grid-template-columns:74px 1fr 118px;gap:22px;align-items:start;
  padding:26px 12px 26px 0;border-bottom:1px solid var(--line);transition:var(--ease);
}
.num-row:hover{background:linear-gradient(90deg,rgba(201,242,78,.16),rgba(201,242,78,0) 78%);}
.num-idx{
  font-family:var(--font-num);font-size:30px;font-weight:800;line-height:1;padding-top:2px;
  color:var(--line-strong);font-variant-numeric:tabular-nums;transition:var(--ease);
}
.num-row:hover .num-idx{color:var(--brand-600);}
.num-body h3{margin-bottom:8px;}
.num-body p{margin:0 0 12px;color:var(--ink-2);font-size:15px;}
.chip-row{display:flex;flex-wrap:wrap;gap:8px;}
.chip-row li{
  font-size:12.5px;color:var(--brand-600);background:var(--surface);
  border:1px solid var(--line);border-radius:999px;padding:3px 11px;
}
.num-deliver{
  font-size:13px;color:var(--brand-700);text-align:right;padding-top:6px;font-weight:600;
  border-right:3px solid var(--lime-400);padding-right:12px;
}
.stick-card{
  position:sticky;top:24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:24px;box-shadow:var(--shadow-1);
}
.stick-card h3{margin-bottom:6px;font-size:18px;}
.stick-card .stick-note{font-size:13px;color:var(--ink-3);margin:0 0 18px;}
.stick-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px;}
.stick-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-2);line-height:1.7;}
.stick-list i{color:var(--brand-500);font-size:13px;margin-top:6px;}
.stick-card img{border-radius:var(--radius-img);aspect-ratio:3/2;object-fit:cover;margin-bottom:18px;}
.stick-contact{display:block;font-size:13px;color:var(--ink-2);border-top:1px dashed var(--line-strong);padding-top:14px;}
.stick-contact b{color:var(--brand-700);}
/* ============ 8. 场景 / 时间轴 ============ */
.figure{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-2);}
.figure img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .35s ease;}
.figure:hover img{transform:scale(1.04);}
.figure::after{content:"";position:absolute;inset:0;background:rgba(7,35,27,.12);pointer-events:none;}
.scene-list{display:flex;flex-direction:column;gap:6px;margin-top:24px;}
.scene-list li{
  display:grid;grid-template-columns:38px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);
}
.scene-list li:last-child{border-bottom:0;}
.scene-ico{
  width:38px;height:38px;border-radius:12px;background:var(--surface-3);color:var(--brand-700);
  display:grid;place-items:center;font-size:15px;
}
.scene-list h4{margin-bottom:4px;font-size:16.5px;}
.scene-list p{margin:0;font-size:14px;color:var(--ink-2);line-height:1.78;}
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.tl-step{
  position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 22px 22px;box-shadow:var(--shadow-1);transition:var(--ease);
}
.tl-step:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.tl-step::before{
  content:"";position:absolute;top:44px;left:100%;width:24px;height:1px;
  background:var(--line-strong);
}
.tl-step:last-child::before{display:none;}
.tl-dot{
  display:inline-grid;place-items:center;width:36px;height:36px;border-radius:12px;
  background:var(--brand-800);color:var(--lime-400);font-family:var(--font-num);
  font-weight:800;font-size:14px;margin-bottom:16px;
}
.tl-step h3{font-size:18px;margin-bottom:8px;}
.tl-step p{font-size:14px;color:var(--ink-2);margin:0 0 14px;}
.tl-time{font-size:12.5px;color:var(--amber-600);font-weight:700;letter-spacing:.02em;}
/* ============ 9. 数据带 ============ */
.stat-band{
  background:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  color:#fff;padding:56px 0 44px;
}
.stat-band h2{color:#fff;font-size:clamp(22px,2.4vw,30px);margin-bottom:8px;}
.stat-band .band-lead{color:rgba(255,255,255,.68);font-size:15px;margin:0 0 34px;max-width:640px;}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat-item{padding:6px 26px;border-left:1px solid rgba(255,255,255,.12);}
.stat-item:first-child{border-left:0;padding-left:0;}
.stat-num{
  display:block;font-family:var(--font-num);font-weight:800;font-variant-numeric:tabular-nums;
  font-size:clamp(28px,3.4vw,44px);line-height:1.1;color:#fff;
}
.stat-num i{font-style:normal;color:var(--lime-400);font-size:.6em;margin-left:2px;}
.stat-label{display:block;font-size:13.5px;color:rgba(255,255,255,.66);margin-top:10px;}
.stat-bar{display:block;height:3px;width:30%;background:var(--lime-400);border-radius:3px;margin-top:36px;}
/* ============ 10. FAQ ============ */
.faq-acc{border:0;background:transparent;margin:0;}
.faq-acc .accordion-item{
  border:1px solid var(--line);border-radius:16px;background:var(--surface);
  margin-bottom:14px;overflow:hidden;
}
.faq-acc .accordion-title{
  border:0;background:var(--surface);padding:20px 22px;display:flex;align-items:center;gap:16px;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.5;transition:var(--ease);
  border-radius:16px;
}
.faq-acc .accordion-title::before{display:none;content:none;}
.faq-acc .accordion-title:hover{background:var(--surface-2);color:var(--brand-700);text-decoration:none;}
.faq-acc .accordion-item.is-active .accordion-title{box-shadow:inset 4px 0 0 var(--lime-400);color:var(--brand-800);}
.faq-idx{font-family:var(--font-num);font-size:13px;font-weight:800;color:var(--line-strong);letter-spacing:.08em;}
.faq-q{flex:1;}
.faq-icon{
  width:28px;height:28px;flex:0 0 28px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;font-size:11px;color:var(--brand-600);transition:var(--ease);
}
.faq-acc .accordion-item.is-active .faq-icon{background:var(--brand-800);border-color:var(--brand-800);color:var(--lime-400);transform:rotate(45deg);}
.faq-acc .accordion-content{
  border:0;background:var(--surface);padding:0 22px 22px;font-size:15px;line-height:1.85;color:var(--ink-2);
}
.faq-acc .accordion-content p{margin:0;border-top:1px dashed var(--line);padding-top:16px;}
/* ============ 11. CTA 与表单 ============ */
.cta-band{background:var(--brand-700);color:#fff;padding:64px 0;}
.cta-band h2{color:#fff;}
.cta-band p{color:rgba(255,255,255,.78);font-size:16px;margin:14px 0 26px;max-width:600px;}
.cta-points{display:flex;flex-wrap:wrap;gap:20px;font-size:13.5px;color:rgba(255,255,255,.72);margin-top:26px;}
.cta-points li{display:flex;align-items:center;gap:8px;}
.cta-points i{color:var(--lime-400);}
.lead-form{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:30px;box-shadow:var(--shadow-1);}
.form-row{margin-bottom:18px;}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px;}
.form-row input[type="text"],.form-row input[type="tel"],.form-row select,.form-row textarea{
  width:100%;height:46px;border:1px solid var(--line);border-radius:12px;padding:0 14px;
  font-size:15px;color:var(--ink);background:var(--surface);transition:var(--ease);
}
.form-row textarea{height:118px;padding:12px 14px;line-height:1.75;resize:vertical;}
.form-row input:focus,.form-row select:focus,.form-row textarea:focus{
  outline:none;border-color:var(--brand-600);box-shadow:0 0 0 3px rgba(34,121,91,.15);
}
.form-check{display:flex;align-items:flex-start;gap:10px;font-size:13px;color:var(--ink-2);margin-bottom:20px;}
.form-check input{width:18px;height:18px;margin-top:4px;accent-color:var(--brand-600);}
.contact-card{
  background:linear-gradient(180deg,var(--brand-800),var(--brand-900));color:#fff;
  border-radius:var(--radius-lg);padding:28px;height:100%;
}
.contact-card h3{color:#fff;margin-bottom:18px;font-size:19px;}
.contact-card ul{display:flex;flex-direction:column;gap:14px;margin-bottom:22px;}
.contact-card li{font-size:14px;color:rgba(255,255,255,.78);line-height:1.7;}
.contact-card li b{display:block;color:var(--lime-300);font-size:12.5px;font-weight:700;letter-spacing:.06em;margin-bottom:2px;}
.contact-card img{border-radius:var(--radius-img);aspect-ratio:16/9;object-fit:cover;}
/* ============ 12. 页脚 ============ */
.site-foot{
  background:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  color:rgba(255,255,255,.72);padding:64px 0 26px;
}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.foot-brand p{font-size:13.5px;line-height:1.8;color:rgba(255,255,255,.6);margin:18px 0 0;max-width:320px;}
.foot-col h4{
  font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.55);
  margin-bottom:16px;font-weight:700;
}
.foot-col ul{display:flex;flex-direction:column;gap:10px;}
.foot-col li,.foot-col a{font-size:13.5px;color:rgba(255,255,255,.72);line-height:1.6;}
.foot-col a:hover{color:var(--lime-400);text-decoration:none;}
.foot-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  border-top:1px solid rgba(255,255,255,.12);margin-top:44px;padding-top:20px;
  font-size:12.5px;color:rgba(255,255,255,.5);
}
/* ============ 13. 响应式 ============ */
@media (max-width:1199px){
  body{padding-left:208px;}
  .side-bar{width:208px;}
  .container{padding:0 32px;}
  .num-row{grid-template-columns:64px 1fr 110px;}
  .stat-item{padding:6px 18px;}
}
@media (max-width:991px){
  body{padding-left:0;padding-top:60px;}
  .side-bar{display:none;}
  .mobile-bar{display:flex;}
  .sec{padding:60px 0;}
  .hero{padding:56px 0 64px;}
  .hero-badges{position:static;margin-top:26px;width:100%;grid-template-columns:repeat(2,minmax(0,1fr));}
  .hb:nth-child(2),.hb:nth-child(3){transform:none;}
  .hero-visual{margin-top:36px;}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .tl-step::before{display:none;}
  .stat-grid{grid-template-columns:repeat(2,1fr);row-gap:26px;}
  .stat-item:nth-child(3){border-left:0;padding-left:0;}
  .foot-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .stick-card{position:static;margin-top:32px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .sec{padding:52px 0;}
  .num-row{grid-template-columns:1fr;gap:10px;padding:22px 0;}
  .num-idx{font-size:24px;}
  .num-deliver{text-align:left;border-right:0;border-left:3px solid var(--lime-400);padding:0 0 0 12px;}
  .timeline{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .lead-form{padding:22px;}
  .foot-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:520px){
  .sec{padding:44px 0;}
  .stat-grid{grid-template-columns:1fr;}
  .stat-item{border-left:0;padding-left:0;border-top:1px solid rgba(255,255,255,.12);padding-top:18px;}
  .stat-item:first-child{border-top:0;padding-top:0;}
  .foot-grid{grid-template-columns:1fr;}
  .card-cta,.btn{padding:13px 20px;}
  .faq-acc .accordion-title{padding:16px 16px;font-size:16px;}
  .faq-acc .accordion-content{padding:0 16px 18px;}
  .hero::after{display:none;}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --brand-900:#07231B;
  --brand-800:#0B2E23;
  --brand-700:#124534;
  --brand-600:#1A5C46;
  --brand-500:#22795B;
  --lime-400:#C9F24E;
  --lime-300:#DBFA8A;
  --amber-500:#F0A03C;
  --amber-600:#D98026;
  --bg:#F5F3EC;
  --surface:#FFFFFF;
  --surface-2:#EDEAE1;
  --surface-3:#E3E0D4;
  --ink:#0F1F1A;
  --ink-2:#4B5A54;
  --ink-3:#7E8A85;
  --line:#DEDBD1;
  --line-strong:#C6C2B4;
  --radius-card:20px;
  --radius-big:24px;
  --radius-img:16px;
  --radius-btn:14px;
  --shadow-1:0 1px 2px rgba(7,35,27,.06);
  --shadow-2:0 18px 40px -22px rgba(7,35,27,.28);
  --ease:.25s cubic-bezier(.4,0,.2,1);
  --side-w:248px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Inter",system-ui,sans-serif;
}

/* ============ reset 与基础排版 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;}
h1{font-size:clamp(30px,4.2vw,52px);line-height:1.15;font-weight:800;letter-spacing:-.02em;}
h2{font-size:clamp(24px,3vw,36px);line-height:1.25;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:15px;line-height:1.4;font-weight:600;}
p{margin:0 0 14px;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),border-color var(--ease),background var(--ease);}
a:hover{color:var(--brand-800);}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px;}
button{font-family:inherit;border:0;background:none;cursor:pointer;}
::selection{background:var(--lime-400);color:var(--brand-900);}

/* 覆盖 Foundation 默认外观 */
.foundation a,
a{color:var(--brand-600);}
a:hover,a:focus{color:var(--brand-800);}
.button,button.button{
  background:var(--lime-400);
  color:var(--brand-900);
  border-radius:var(--radius-btn);
  font-family:var(--font-cn);
  font-weight:600;
  letter-spacing:.02em;
}
.button:hover,button.button:hover{background:var(--brand-800);color:#fff;}
.accordion{border:0;background:transparent;}
.accordion .accordion-item{border:0;background:transparent;}
.reveal{border-radius:var(--radius-big);border:0;}

/* ============ 布局容器 ============ */
.page-main{
  margin-left:var(--side-w);
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 40px;
}
.section{padding:88px 0;border-top:1px solid var(--line);}
.section:first-of-type{border-top:0;}

.sec-head{margin-bottom:40px;max-width:760px;}
.sec-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--brand-600);
  font-weight:700;
  text-transform:uppercase;
  margin-bottom:12px;
}
.sec-tag::before{content:"";width:22px;height:2px;background:var(--lime-400);display:inline-block;}
.sec-desc{color:var(--ink-2);font-size:16px;margin-top:14px;}

/* ============ 左侧竖向导航 ============ */
.side-shell{
  position:fixed;
  top:0;left:0;
  width:var(--side-w);
  height:100vh;
  background:var(--brand-800);
  background-image:
    radial-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(180deg,var(--brand-800),var(--brand-900));
  background-size:4px 4px,100% 100%;
  border-right:1px solid var(--line-strong);
  display:flex;
  flex-direction:column;
  z-index:60;
}
.side-brand{
  display:block;
  padding:26px 20px 22px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.brand-block{display:flex;align-items:center;gap:12px;text-decoration:none;}
.brand-mark{
  width:44px;height:44px;flex:0 0 44px;
  display:grid;place-items:center;
  border-radius:13px;
  background:var(--lime-400);
  color:var(--brand-900);
  font-weight:800;
  font-size:14px;
  letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{color:#fff;font-size:15px;font-weight:700;letter-spacing:.01em;}
.brand-text span{
  color:var(--lime-300);
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.16em;
  opacity:.85;
}
.side-nav{
  padding:18px 12px;
  display:flex;
  flex-direction:column;
  gap:4px;
  flex:1 1 auto;
  overflow-y:auto;
}
.side-nav a{
  display:flex;
  align-items:center;
  gap:12px;
  height:48px;
  padding:0 12px 0 16px;
  border-radius:12px;
  color:var(--surface-3);
  font-size:15px;
  position:relative;
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.side-nav a i{width:18px;text-align:center;font-size:14px;opacity:.85;}
.side-nav a:hover{
  background:rgba(255,255,255,.06);
  color:#fff;
  transform:translateX(2px);
}
.side-nav a.is-active{
  background:rgba(201,242,78,.10);
  color:#fff;
}
.side-nav a.is-active::before{
  content:"";
  position:absolute;
  left:0;top:9px;bottom:9px;
  width:4px;border-radius:0 4px 4px 0;
  background:var(--lime-400);
}
.side-nav a.is-active i{color:var(--lime-400);opacity:1;}
.side-foot{
  padding:18px 20px 22px;
  border-top:1px solid rgba(255,255,255,.1);
}
.side-foot .btn{width:100%;justify-content:center;}
.side-foot small{
  display:block;
  margin-top:12px;
  color:rgba(227,224,212,.6);
  font-size:11.5px;
  letter-spacing:.02em;
}

/* ============ 移动端顶部条与抽屉 ============ */
.mobile-bar{
  display:none;
  position:fixed;
  top:0;left:0;right:0;
  height:60px;
  background:var(--brand-800);
  align-items:center;
  justify-content:space-between;
  padding:0 16px;
  z-index:80;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.mobile-bar .mb-brand{display:flex;align-items:center;gap:10px;text-decoration:none;}
.mobile-bar .mb-brand .brand-mark{width:34px;height:34px;flex:0 0 34px;border-radius:10px;font-size:12px;}
.mobile-bar .mb-brand b{color:#fff;font-size:15px;}
.burger{
  width:44px;height:44px;
  display:grid;place-items:center;
  color:#fff;
  font-size:18px;
  border-radius:12px;
  background:rgba(255,255,255,.08);
}
.burger:hover{background:rgba(201,242,78,.16);color:var(--lime-400);}
.drawer{
  position:fixed;
  inset:0;
  background:var(--brand-800);
  z-index:90;
  padding:24px 22px 32px;
  display:none;
  flex-direction:column;
  gap:8px;
  overflow-y:auto;
}
.drawer.is-open{display:flex;}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.drawer-head b{color:#fff;font-size:17px;}
.drawer-close{
  width:44px;height:44px;display:grid;place-items:center;
  color:#fff;font-size:18px;border-radius:12px;background:rgba(255,255,255,.08);
}
.drawer nav{display:flex;flex-direction:column;gap:6px;flex:1;}
.drawer nav a{
  display:flex;align-items:center;gap:12px;
  min-height:54px;
  padding:12px 14px;
  border-radius:14px;
  color:var(--surface-3);
  font-size:17px;
  border-bottom:1px solid rgba(255,255,255,.08);
}
.drawer nav a i{color:var(--lime-300);width:20px;text-align:center;}
.drawer nav a.is-active{background:rgba(201,242,78,.12);color:#fff;}
.drawer .btn{width:100%;justify-content:center;margin-top:16px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:46px;
  padding:12px 24px;
  border-radius:var(--radius-btn);
  font-size:15px;
  font-weight:600;
  letter-spacing:.02em;
  text-decoration:none;
  transition:background var(--ease),color var(--ease),transform var(--ease),border-color var(--ease);
  border:1.5px solid transparent;
}
.btn-primary{background:var(--lime-400);color:var(--brand-900);}
.btn-primary:hover{background:var(--brand-800);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-700);border-color:var(--brand-700);}
.btn-ghost:hover{background:var(--surface-2);color:var(--brand-800);transform:translateY(-1px);}
.btn-light{background:#fff;color:var(--brand-900);}
.btn-light:hover{background:var(--lime-400);color:var(--brand-900);transform:translateY(-1px);}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;font-weight:600;color:var(--brand-600);
  border-bottom:1px solid transparent;
  padding-bottom:2px;
}
.text-link:hover{color:var(--brand-800);border-bottom-color:var(--brand-800);}
.text-link i{font-size:12px;transition:transform var(--ease);}
.text-link:hover i{transform:translateX(3px);}

/* ============ 面包屑 ============ */
.crumb{
  display:flex;align-items:center;gap:8px;
  font-size:13px;
  color:var(--ink-3);
  padding:20px 0 0;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--brand-600);}
.crumb .sep{color:var(--line-strong);}
.crumb .now{color:var(--ink-3);}

/* ============ 分类头区 ============ */
.cat-hero{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-big);
  background:linear-gradient(135deg,var(--brand-800) 0%,var(--brand-700) 52%,var(--brand-600) 100%);
  margin:24px 0 0;
  padding:64px 56px 56px;
  isolation:isolate;
}
.cat-hero::before{
  content:"";
  position:absolute;inset:0;
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.06) 1px,transparent 1px);
  background-size:56px 56px;
  opacity:.9;
  z-index:-1;
}
.cat-hero::after{
  content:"";
  position:absolute;
  right:-160px;bottom:-220px;
  width:620px;height:620px;
  border-radius:50%;
  border:2px solid rgba(201,242,78,.12);
  box-shadow:0 0 0 60px rgba(201,242,78,.05),0 0 0 140px rgba(201,242,78,.03);
  z-index:-1;
}
.cat-hero .hero-tag{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 15px;
  border-radius:999px;
  background:rgba(7,35,27,.55);
  color:var(--lime-300);
  font-size:12.5px;
  letter-spacing:.06em;
  margin-bottom:22px;
}
.cat-hero .hero-tag::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--lime-400);
}
.cat-hero h1{color:#fff;max-width:820px;}
.cat-hero .lead{
  color:rgba(255,255,255,.82);
  font-size:17px;
  line-height:1.9;
  max-width:760px;
  margin-top:22px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:30px;
}
.hero-meta span{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;
  border-radius:999px;
  font-size:13px;
  color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.09);
  border:1px solid rgba(255,255,255,.14);
}
.hero-meta span i{color:var(--lime-400);font-size:12px;}

/* ============ 等分四宫格 ============ */
.quad-grid{margin-top:0;}
.quad-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  display:flex;
  flex-direction:column;
  height:100%;
  box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.quad-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.quad-media{position:relative;aspect-ratio:3/2;overflow:hidden;background:var(--surface-2);}
.quad-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.quad-card:hover .quad-media img{transform:scale(1.04);}
.quad-media .num{
  position:absolute;left:14px;top:14px;
  padding:5px 12px;
  border-radius:12px;
  background:rgba(7,35,27,.82);
  color:var(--lime-300);
  font-family:var(--font-num);
  font-size:12px;
  letter-spacing:.1em;
  font-weight:700;
}
.quad-body{padding:24px 24px 26px;display:flex;flex-direction:column;gap:12px;flex:1;}
.quad-body h3{font-size:19px;}
.quad-body p{color:var(--ink-2);font-size:14.5px;line-height:1.8;margin:0;}
.quad-body .text-link{margin-top:auto;padding-top:6px;align-self:flex-start;}

/* ============ 底部数据条 ============ */
.data-strip{
  background:var(--brand-800);
  background-image:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  color:#fff;
  padding:40px 0;
  margin-top:0;
}
.data-grid{display:flex;flex-wrap:wrap;}
.data-item{
  flex:1 1 25%;
  padding:6px 24px;
  border-left:1px solid rgba(255,255,255,.12);
}
.data-item:first-child{border-left:0;padding-left:0;}
.data-num{
  font-family:var(--font-num);
  font-size:clamp(28px,3.4vw,44px);
  font-weight:800;
  color:var(--lime-400);
  font-variant-numeric:tabular-nums;
  line-height:1.1;
  letter-spacing:-.01em;
}
.data-num small{font-size:14px;font-weight:600;color:rgba(255,255,255,.7);margin-left:6px;}
.data-label{font-size:14px;color:rgba(255,255,255,.72);margin-top:8px;}
.data-bar{height:3px;width:30%;background:var(--lime-400);border-radius:2px;margin-top:32px;}

/* ============ 要点清单 ============ */
.points-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.points-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:30px 30px 26px;
  box-shadow:var(--shadow-1);
}
.points-card h3{
  display:flex;align-items:center;gap:12px;
  font-size:18px;
  padding-bottom:16px;
  margin-bottom:16px;
  border-bottom:1px dashed var(--line-strong);
}
.points-card h3 i{
  width:34px;height:34px;flex:0 0 34px;
  display:grid;place-items:center;
  border-radius:11px;
  background:var(--brand-800);
  color:var(--lime-400);
  font-size:14px;
}
.points-card ul{display:flex;flex-direction:column;gap:12px;}
.points-card li{
  position:relative;
  padding-left:26px;
  font-size:14.5px;
  line-height:1.75;
  color:var(--ink-2);
}
.points-card li::before{
  content:"\f00c";
  font-family:"Font Awesome 6 Free";
  font-weight:900;
  position:absolute;left:0;top:3px;
  font-size:12px;
  color:var(--brand-500);
}

/* ============ FAQ ============ */
.faq-wrap{max-width:900px;}
.accordion.faq-acc{margin:0;}
.faq-acc .accordion-item{
  background:var(--surface);
  border:1px solid var(--line) !important;
  border-radius:var(--radius-img);
  margin-bottom:14px;
  overflow:hidden;
  position:relative;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-acc .accordion-item:hover{border-color:var(--line-strong) !important;box-shadow:var(--shadow-1);}
.faq-acc .accordion-title{
  display:flex;
  align-items:center;
  gap:16px;
  padding:20px 56px 20px 22px;
  font-size:17px;
  font-weight:600;
  color:var(--ink);
  border:0 !important;
  position:relative;
  transition:background var(--ease),color var(--ease);
}
.faq-acc .accordion-title::before{display:none !important;}
.faq-acc .accordion-title:hover{background:var(--surface-2);color:var(--brand-800);}
.faq-acc .accordion-title .faq-no{
  font-family:var(--font-num);
  font-size:15px;
  font-weight:700;
  color:var(--line-strong);
  letter-spacing:.06em;
  flex:0 0 auto;
}
.faq-acc .accordion-title::after{
  content:"+";
  position:absolute;
  right:18px;top:50%;
  transform:translateY(-50%);
  width:30px;height:30px;
  display:grid;place-items:center;
  border-radius:50%;
  background:var(--surface-2);
  color:var(--brand-700);
  font-size:17px;
  font-weight:600;
  line-height:1;
  transition:background var(--ease),color var(--ease);
}
.faq-acc .accordion-title[aria-expanded="true"]{color:var(--brand-800);}
.faq-acc .accordion-title[aria-expanded="true"]::after{
  content:"\2212";
  background:var(--brand-800);
  color:var(--lime-400);
}
.faq-acc .accordion-item.is-active::before{
  content:"";
  position:absolute;left:0;top:0;bottom:0;
  width:4px;
  background:var(--lime-400);
}
.faq-acc .accordion-content{
  padding:0 56px 22px 22px !important;
  border:0 !important;
  background:transparent;
  color:var(--ink-2);
  font-size:15px;
  line-height:1.85;
  position:relative;
}
.faq-acc .accordion-content::before{
  content:"";
  display:block;
  border-top:1px dashed var(--line-strong);
  margin:0 0 16px;
}

/* ============ CTA 条 ============ */
.cta-band{
  background:linear-gradient(135deg,var(--brand-900),var(--brand-700));
  border-radius:var(--radius-big);
  padding:52px 56px;
  color:#fff;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:36px;
  flex-wrap:wrap;
  position:relative;
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;right:-100px;top:-140px;
  width:420px;height:420px;
  border-radius:50%;
  border:1px solid rgba(201,242,78,.16);
}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);position:relative;z-index:1;}
.cta-band p{color:rgba(255,255,255,.78);font-size:15px;margin-top:12px;max-width:640px;position:relative;z-index:1;}
.cta-band .btn{position:relative;z-index:1;flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-foot{
  background:linear-gradient(180deg,var(--brand-800),var(--brand-900));
  color:rgba(255,255,255,.78);
  padding:64px 0 28px;
  margin-top:auto;
}
.foot-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-bottom:40px;
}
.foot-brand .brand-block{margin-bottom:18px;}
.foot-brand p{font-size:14px;color:rgba(255,255,255,.66);line-height:1.9;max-width:340px;}
.foot-col h4{
  color:#fff;
  font-size:15px;
  margin-bottom:18px;
  position:relative;
  padding-bottom:12px;
}
.foot-col h4::after{
  content:"";position:absolute;left:0;bottom:0;
  width:26px;height:2px;background:var(--lime-400);
}
.foot-col ul{display:flex;flex-direction:column;gap:11px;}
.foot-col li{font-size:14px;color:rgba(255,255,255,.72);line-height:1.7;}
.foot-col a{color:rgba(255,255,255,.78);}
.foot-col a:hover{color:var(--lime-400);}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding-top:22px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(255,255,255,.55);
}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--side-w:208px;}
  .container{padding:0 32px;}
  .side-nav a{font-size:14.5px;}
  .cat-hero{padding:52px 40px 46px;}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:34px;}
  .foot-col:last-child{grid-column:1 / -1;}
}

@media (max-width:991px){
  .side-shell{display:none;}
  .mobile-bar{display:flex;}
  .page-main{margin-left:0;padding-top:60px;}
  .container{padding:0 20px;}
  .section{padding:64px 0;}
  .cat-hero{padding:40px 26px 36px;margin-top:18px;}
  .cat-hero .lead{font-size:15.5px;}
  .quad-grid{row-gap:16px;}
  .data-item{flex:1 1 50%;padding:14px 20px;border-left:0;border-top:1px solid rgba(255,255,255,.12);}
  .data-item:nth-child(odd){padding-left:0;}
  .data-item:first-child,.data-item:nth-child(2){border-top:0;padding-top:0;}
  .points-grid{grid-template-columns:1fr;}
  .cta-band{padding:38px 26px;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .foot-col:last-child{grid-column:auto;}
}

@media (max-width:767px){
  h1{font-size:clamp(26px,6.4vw,34px);}
  h2{font-size:clamp(21px,5.2vw,26px);}
  .section{padding:56px 0;}
  .sec-head{margin-bottom:28px;}
  .cat-hero h1{font-size:clamp(24px,6.6vw,32px);}
  .hero-meta span{font-size:12.5px;padding:7px 12px;}
  .quad-body{padding:20px 20px 22px;}
  .cta-band{padding:32px 22px;}
  .cta-band .btn{width:100%;justify-content:center;}
  .foot-grid{grid-template-columns:1fr;gap:30px;}
  .foot-bottom{flex-direction:column;gap:8px;}
}

@media (max-width:519px){
  .container{padding:0 16px;}
  .section{padding:44px 0;}
  .cat-hero{padding:32px 20px 30px;}
  .quad-card{border-radius:16px;}
  .points-card{padding:22px 20px;border-radius:16px;}
  .points-card li{font-size:14px;}
  .faq-acc .accordion-title{font-size:15.5px;padding:16px 46px 16px 16px;gap:12px;}
  .faq-acc .accordion-content{padding:0 46px 18px 16px !important;}
  .data-item{flex:1 1 100%;padding:14px 0;}
  .data-item:nth-child(2){border-top:1px solid rgba(255,255,255,.12);padding-top:14px;}
  .btn{width:100%;justify-content:center;}
  .side-foot .btn,.drawer .btn{width:100%;}
}

/* roulang page: category4 */
/* ===== 01 设计变量 ===== */
:root{
  --brand-900:#07231B;
  --brand-800:#0B2E23;
  --brand-700:#124534;
  --brand-600:#1A5C46;
  --brand-500:#22795B;
  --lime-400:#C9F24E;
  --lime-300:#DBFA8A;
  --amber-500:#F0A03C;
  --amber-600:#D98026;
  --bg:#F5F3EC;
  --surface:#FFFFFF;
  --surface-2:#EDEAE1;
  --surface-3:#E3E0D4;
  --ink:#0F1F1A;
  --ink-2:#4B5A54;
  --ink-3:#7E8A85;
  --line:#DEDBD1;
  --line-strong:#C6C2B4;
  --r-card:20px;
  --r-lg:24px;
  --r-img:16px;
  --r-btn:14px;
  --sh-1:0 1px 2px rgba(7,35,27,.06);
  --sh-2:0 18px 40px -22px rgba(7,35,27,.28);
  --sh-dark:0 0 0 1px rgba(201,242,78,.35);
  --ease:.25s cubic-bezier(.4,0,.2,1);
  --nav-w:248px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  --font-num:"DIN Alternate","Inter",system-ui,sans-serif;
}

/* ===== 02 reset 与基础排版 ===== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;height:auto;display:block;border:0;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover,a:focus{color:var(--brand-800);text-decoration:none;border-bottom:1px solid var(--brand-800);}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3,h4{font-weight:700;color:var(--ink);}
p{color:var(--ink-2);}
button,input,select,textarea{font-family:inherit;font-size:inherit;}
:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px;}
::selection{background:var(--lime-400);color:var(--brand-900);}

/* Foundation 默认外观重置 */
.button,.button:focus,button:not(.hamburger):not(.drawer-close){
  background:transparent;color:inherit;border:0;margin:0;
}
.accordion{background:transparent;border:0;border-radius:0;margin:0;padding:0;}
.accordion-title{color:var(--ink);border:0;}
.accordion-content{background:transparent;border:0;padding:0;color:var(--ink-2);}
table{border-collapse:collapse;border:0;}
.grid-container{padding-left:0;padding-right:0;}

/* ===== 03 布局容器与栅格修正 ===== */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px;}
.grid-x{margin-left:0;margin-right:0;}
.grid-x>.cell{padding-left:0;padding-right:0;}
.page{margin-left:var(--nav-w);min-height:100vh;display:flex;flex-direction:column;}
.page main{flex:1 0 auto;}
section{position:relative;}

/* ===== 04 左侧竖向导航 ===== */
.sidebar{
  position:fixed;
  top:0;left:0;bottom:0;
  width:var(--nav-w);
  background:var(--brand-800);
  border-right:1px solid var(--line-strong);
  z-index:60;
  overflow-y:auto;
}
.sidebar::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:4px 4px;opacity:.5;
}
.side-inner{position:relative;z-index:2;display:flex;flex-direction:column;min-height:100%;padding:24px 0 20px;}
.brand-block{display:flex;align-items:center;gap:12px;padding:0 20px 22px;border-bottom:1px solid rgba(255,255,255,.12);border-bottom-width:1px;}
.brand-block:hover,.brand-block:focus{border-bottom:1px solid rgba(255,255,255,.12);}
.brand-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:44px;height:44px;flex:0 0 44px;
  background:var(--lime-400);color:var(--brand-900);
  border-radius:13px;font-size:14px;font-weight:800;letter-spacing:.02em;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;}
.brand-text b{font-size:17px;color:#fff;font-weight:700;letter-spacing:.01em;}
.brand-text span{font-size:12px;color:rgba(255,255,255,.55);letter-spacing:.16em;font-family:var(--font-num);}
.side-nav{display:flex;flex-direction:column;padding:14px 0;flex:1 1 auto;}
.side-nav a{
  position:relative;display:flex;align-items:center;gap:12px;
  min-height:48px;padding:0 20px;
  color:rgba(227,224,212,.82);font-size:15px;
  border-bottom:0;
  transition:background var(--ease),color var(--ease),transform var(--ease);
}
.side-nav a i{width:18px;text-align:center;font-size:15px;color:rgba(201,242,78,.7);}
.side-nav a:hover,.side-nav a:focus{
  background:rgba(255,255,255,.06);color:#fff;transform:translateX(2px);border-bottom:0;
}
.side-nav a.is-active{
  background:rgba(201,242,78,.10);color:#fff;font-weight:600;
}
.side-nav a.is-active::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:4px;
  background:var(--lime-400);border-radius:0 4px 4px 0;
}
.side-nav a.is-active i{color:var(--lime-400);}
.side-foot{padding:18px 20px 0;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-direction:column;gap:12px;}
.side-domain{font-size:12px;color:rgba(255,255,255,.45);letter-spacing:.04em;font-family:var(--font-num);}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:700;
  cursor:pointer;border:0;
  transition:background var(--ease),color var(--ease),transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.btn:hover,.btn:focus{border-bottom:0;}
.btn-lime{background:var(--lime-400);color:var(--brand-900);}
.btn-lime:hover,.btn-lime:focus{background:var(--brand-800);color:#fff;transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--brand-700);border:1.5px solid var(--brand-700);}
.btn-ghost:hover,.btn-ghost:focus{background:var(--surface-2);color:var(--brand-800);transform:translateY(-1px);}
.btn-white{background:#fff;color:var(--brand-800);}
.btn-white:hover,.btn-white:focus{background:var(--lime-400);color:var(--brand-900);transform:translateY(-1px);}
.btn-sm{min-height:42px;padding:0 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{opacity:.45;cursor:not-allowed;}

/* ===== 05 移动端顶部条与抽屉 ===== */
.topbar{
  display:none;
  position:fixed;top:0;left:0;right:0;height:60px;z-index:70;
  background:var(--brand-800);
  border-bottom:1px solid rgba(255,255,255,.12);
  align-items:center;justify-content:space-between;
  padding:0 16px;
}
.topbar .brand-block{padding:0;border:0;}
.topbar .brand-block:hover{border:0;}
.topbar .brand-mark{width:38px;height:38px;flex:0 0 38px;font-size:12px;border-radius:11px;}
.topbar .brand-text b{font-size:15px;}
.topbar .brand-text span{font-size:10px;}
.hamburger{
  width:44px;height:44px;display:inline-flex;flex-direction:column;justify-content:center;align-items:center;gap:5px;
  background:transparent;border:0;cursor:pointer;
}
.hamburger span{display:block;width:22px;height:2px;background:var(--surface-3);border-radius:2px;transition:transform var(--ease),opacity var(--ease);}
.drawer{
  position:fixed;top:0;left:0;right:0;z-index:90;
  background:var(--brand-800);
  transform:translateY(-102%);
  transition:transform .32s cubic-bezier(.4,0,.2,1);
  max-height:100vh;overflow-y:auto;
  padding:16px 20px 28px;
}
.drawer.is-open{transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid rgba(255,255,255,.12);}
.drawer-head .brand-block{padding:0;border:0;}
.drawer-close{width:44px;height:44px;background:transparent;border:0;color:var(--surface-3);font-size:20px;cursor:pointer;}
.drawer .side-nav{padding:10px 0 18px;}
.drawer .side-nav a{font-size:17px;min-height:56px;}
.drawer .side-foot{border-top:1px solid rgba(255,255,255,.12);padding:18px 0 0;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,35,27,.55);z-index:80;
  opacity:0;visibility:hidden;transition:opacity var(--ease),visibility var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible;}

/* ===== 06 分类头区 ===== */
.cat-hero{
  background:linear-gradient(135deg,var(--brand-800) 0%,var(--brand-700) 55%,var(--brand-600) 100%);
  color:#fff;
  padding:72px 0 68px;
  position:relative;overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;opacity:.06;
  background-image:linear-gradient(rgba(255,255,255,.7) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.7) 1px,transparent 1px);
  background-size:56px 56px;
}
.cat-hero::after{
  content:"";position:absolute;right:-140px;bottom:-180px;width:520px;height:520px;border-radius:50%;
  border:2px solid rgba(201,242,78,.12);box-shadow:0 0 0 90px rgba(201,242,78,.04);
}
.cat-hero .container{position:relative;z-index:3;}
.crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:22px;flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.78);border-bottom:0;}
.crumb a:hover,.crumb a:focus{color:var(--lime-400);border-bottom:0;}
.crumb span.sep{color:rgba(255,255,255,.35);}
.crumb .current{color:rgba(255,255,255,.55);}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-900);color:var(--lime-300);
  font-size:13px;letter-spacing:.04em;
  padding:7px 16px;border-radius:999px;border:1px solid rgba(201,242,78,.35);
}
.hero-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--lime-400);}
.cat-hero h1{
  color:#fff;font-size:clamp(30px,4.2vw,52px);line-height:1.15;letter-spacing:-.02em;font-weight:800;
  margin:22px 0 18px;max-width:22em;
}
.cat-hero .hero-sub{color:rgba(255,255,255,.78);font-size:18px;line-height:1.75;max-width:60ch;margin-bottom:28px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;}
.hero-meta{display:flex;gap:26px;flex-wrap:wrap;margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);}
.hero-meta div{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.72);}
.hero-meta i{color:var(--lime-400);font-size:14px;}

/* ===== 07 通用板块 ===== */
.sec{padding:88px 0;border-top:1px solid var(--line);}
.sec-label{
  font-size:12.5px;letter-spacing:.14em;color:var(--brand-600);font-weight:700;
  font-family:var(--font-num);margin-bottom:14px;text-transform:uppercase;
}
.sec-head{max-width:760px;margin-bottom:44px;}
.sec-head h2{font-size:clamp(24px,3vw,36px);line-height:1.25;margin-bottom:14px;}
.sec-head p{font-size:16px;line-height:1.85;}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap;margin-bottom:40px;}
.sec-head-row .sec-label{margin-bottom:12px;}
.sec-head-row h2{font-size:clamp(24px,3vw,36px);line-height:1.25;}
.text-link{font-size:15px;font-weight:600;color:var(--brand-600);display:inline-flex;align-items:center;gap:7px;border-bottom:0;}
.text-link:hover,.text-link:focus{color:var(--brand-800);border-bottom:0;}
.text-link i{transition:transform var(--ease);}
.text-link:hover i{transform:translateX(3px);}

/* ===== 08 时间轴（左窄右宽） ===== */
.timeline{position:relative;border-top:1px solid var(--line);}
.tl-item{padding:34px 0;border-bottom:1px solid var(--line);}
.tl-side{position:relative;padding:0 0 16px;}
.tl-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:12px;
  background:var(--brand-800);color:var(--lime-400);
  font-family:var(--font-num);font-weight:800;font-size:15px;margin-bottom:12px;
}
.tl-step{display:block;font-size:13px;color:var(--ink-3);letter-spacing:.04em;margin-bottom:6px;}
.tl-side h3{font-size:20px;line-height:1.4;}
.tl-body{padding:0 0 0 0;}
.tl-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--sh-1);
  transition:box-shadow var(--ease),transform var(--ease);
}
.tl-card:hover{box-shadow:var(--sh-2);transform:translateY(-2px);}
.tl-card p{font-size:16px;line-height:1.85;margin-bottom:18px;}
.tl-figure{margin:0 0 20px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--line);}
.tl-figure img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform .35s ease;}
.tl-card:hover .tl-figure img{transform:scale(1.04);}
.tl-figure figcaption{font-size:13px;color:var(--ink-3);padding:10px 14px;background:var(--surface-2);line-height:1.6;}
.tl-list{display:flex;flex-wrap:wrap;gap:10px;margin-top:4px;}
.tl-list li{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14px;color:var(--brand-700);
  background:var(--surface-2);border-radius:999px;
  padding:7px 15px;
}
.tl-list li::before{content:"\f00c";font-family:"Font Awesome 6 Free";font-weight:900;font-size:11px;color:var(--brand-600);}

/* ===== 09 指标说明双栏 ===== */
.spec-wrap{border:1px solid var(--line);border-radius:var(--r-lg);background:var(--surface);overflow:hidden;box-shadow:var(--sh-1);}
.spec-row{display:flex;flex-wrap:wrap;border-top:1px solid var(--line);transition:background var(--ease);}
.spec-row:first-child{border-top:0;}
.spec-row:hover{background:var(--surface-2);}
.spec-name{
  flex:0 0 30%;max-width:30%;
  padding:24px 28px;
  background:var(--surface-2);
  border-right:1px solid var(--line);
}
.spec-name b{display:block;font-size:17px;color:var(--ink);font-weight:700;}
.spec-name span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:4px;font-family:var(--font-num);letter-spacing:.06em;}
.spec-desc{flex:1 1 0;padding:24px 28px;font-size:15.5px;line-height:1.85;color:var(--ink-2);}
.spec-desc em{font-style:normal;color:var(--brand-600);font-weight:600;}

/* ===== 10 要点清单双列 ===== */
.point-band{background:var(--surface-2);}
.point-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 40px;}
.point-grid li{
  display:flex;gap:14px;align-items:flex-start;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--lime-400);
  border-radius:14px;padding:18px 20px;
  font-size:15.5px;color:var(--ink-2);line-height:1.8;
  transition:box-shadow var(--ease),transform var(--ease);
}
.point-grid li:hover{box-shadow:var(--sh-1);transform:translateY(-2px);}
.point-grid li i{color:var(--brand-600);font-size:15px;margin-top:5px;}

/* ===== 11 FAQ 手风琴 ===== */
.faq-list{display:flex;flex-direction:column;gap:14px;}
.faq-list .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:16px;
  overflow:hidden;box-shadow:var(--sh-1);
  transition:box-shadow var(--ease);
}
.faq-list .accordion-item:hover{box-shadow:var(--sh-2);}
.faq-list .accordion-title{
  position:relative;display:flex;align-items:center;gap:16px;
  padding:20px 68px 20px 24px;
  font-size:17px;font-weight:600;color:var(--ink);line-height:1.6;
  border:0;background:transparent;
}
.faq-list .accordion-title:hover,.faq-list .accordion-title:focus{border:0;color:var(--brand-700);}
.faq-list .accordion-title::before{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  width:30px;height:30px;border-radius:50%;
  background:var(--surface-2);color:var(--brand-700);
  display:flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;line-height:1;
}
.faq-list .accordion-item.is-active .accordion-title::before{content:"−";background:var(--lime-400);color:var(--brand-900);}
.faq-num{font-family:var(--font-num);font-size:14px;color:var(--line-strong);font-weight:700;letter-spacing:.06em;}
.faq-list .accordion-item.is-active{border-left:4px solid var(--lime-400);}
.faq-list .accordion-content{padding:0 24px 22px 24px;border:0;background:transparent;}
.faq-list .accordion-content p{
  font-size:15px;line-height:1.85;color:var(--ink-2);
  padding-top:16px;border-top:1px dashed var(--line-strong);
}

/* ===== 12 CTA 条 ===== */
.cta-band{
  background:linear-gradient(180deg,var(--brand-800) 0%,var(--brand-900) 100%);
  padding:64px 0;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-120px;top:-160px;width:420px;height:420px;border-radius:50%;
  border:1px solid rgba(201,242,78,.16);
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.6vw,30px);line-height:1.3;margin-bottom:10px;}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15.5px;max-width:56ch;}

/* ===== 13 页脚 ===== */
.site-foot{
  background:linear-gradient(180deg,var(--brand-800) 0%,var(--brand-900) 100%);
  color:rgba(255,255,255,.72);
  padding:64px 0 26px;
}
.site-foot .brand-block{padding:0 0 18px;border:0;}
.site-foot .brand-block:hover{border:0;}
.site-foot .brand-text b{color:#fff;}
.site-foot .brand-text span{color:rgba(255,255,255,.5);}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.foot-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);margin-top:14px;max-width:34ch;}
.foot-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:700;}
.foot-col ul{display:flex;flex-direction:column;gap:11px;}
.foot-col li a{font-size:14px;color:rgba(255,255,255,.68);border-bottom:0;}
.foot-col li a:hover,.foot-col li a:focus{color:var(--lime-400);border-bottom:0;}
.foot-col li span{font-size:14px;color:rgba(255,255,255,.62);line-height:1.7;}
.foot-bottom{
  margin-top:46px;padding-top:20px;
  border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.48);
}

/* ===== 14 hover/focus/active 补充 ===== */
a:focus-visible,.btn:focus-visible,.hamburger:focus-visible,.drawer-close:focus-visible{outline:2px solid var(--amber-500);outline-offset:2px;}
.side-nav a:focus-visible{outline:2px solid var(--lime-400);outline-offset:-2px;}

/* ===== 15 响应式 ===== */
@media (max-width:1199px){
  :root{--nav-w:208px;}
  .cat-hero h1{font-size:clamp(28px,3.8vw,42px);}
  .foot-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .foot-col:last-child{grid-column:1 / -1;}
}
@media (max-width:991px){
  .sidebar{display:none;}
  .topbar{display:flex;}
  .page{margin-left:0;padding-top:60px;}
  .container{padding:0 20px;}
  .sec{padding:64px 0;}
  .cat-hero{padding:52px 0 48px;}
  .spec-name{flex:0 0 100%;max-width:100%;border-right:0;border-bottom:1px solid var(--line);padding:18px 20px;}
  .spec-desc{padding:18px 20px;}
  .point-grid{grid-template-columns:1fr;}
  .foot-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .foot-col:last-child{grid-column:auto;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
}
@media (min-width:992px){
  .timeline .tl-item{display:flex;flex-wrap:nowrap;}
  .timeline .tl-item>.tl-side{flex:0 0 30%;max-width:30%;padding:0 44px 0 0;}
  .timeline .tl-item>.tl-body{flex:1 1 auto;max-width:70%;}
  .tl-side::before{
    content:"";position:absolute;right:19px;top:14px;width:11px;height:11px;border-radius:50%;
    background:var(--lime-400);border:2px solid var(--brand-600);box-shadow:0 0 0 4px var(--bg);
  }
  .tl-side::after{
    content:"";position:absolute;right:24px;top:30px;bottom:-34px;width:1px;background:var(--line-strong);
  }
  .tl-item:last-child .tl-side::after{display:none;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .sec{padding:56px 0;}
  .cat-hero{padding:44px 0 42px;}
  .cat-hero .hero-sub{font-size:16.5px;}
  .hero-actions .btn{width:100%;}
  .hero-meta{gap:14px;flex-direction:column;align-items:flex-start;}
  .tl-card{padding:20px 18px;border-radius:16px;}
  .tl-card p{font-size:15.5px;}
  .tl-list li{width:100%;}
  .faq-list .accordion-title{font-size:16px;padding:18px 60px 18px 18px;gap:12px;}
  .faq-list .accordion-content{padding:0 18px 18px 18px;}
  .foot-grid{grid-template-columns:1fr;gap:26px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .sec-head{margin-bottom:30px;}
  .sec-head-row{margin-bottom:28px;}
}
@media (max-width:479px){
  .sec{padding:44px 0;}
  .container{padding:0 16px;}
  .cat-hero::before,.cat-hero::after{display:none;}
  .tl-index{width:34px;height:34px;font-size:14px;border-radius:10px;}
  .cta-band{padding:48px 0;}
}