/* roulang page: index */
:root{
  --ink:#0B5D4E;
  --ink-deep:#073B33;
  --flame:#FF5A1F;
  --spark:#23D2B0;
  --paper:#F6F7F4;
  --card:#FFFFFF;
  --body:#111814;
  --muted:#55605A;
  --line:#E4E8E2;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(11,21,18,.06);
  --shadow-2:0 8px 24px rgba(11,21,18,.06);
  --shadow-3:0 14px 32px rgba(11,21,18,.10);
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--body);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;transition:color .2s ease,opacity .2s ease;}
button,input,select,textarea{font:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;line-height:1.35;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;font-family:"SF Mono",ui-monospace,Menlo,Consolas,monospace;letter-spacing:-.02em;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px;}
.section{padding:var(--section) 0;}
.section-tight{padding:64px 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap;}
.section-title{font-size:clamp(24px,3vw,32px);font-weight:700;}
.section-sub{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.08em;color:var(--ink);text-transform:uppercase;}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--flame);display:block;border-radius:2px;}
.text-link{color:var(--ink);font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;}
.text-link::after{content:"→";transition:transform .2s ease;}
.text-link:hover{color:var(--flame);}
.text-link:hover::after{transform:translateX(3px);}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 4px 18px rgba(11,21,18,.08);}
.nav-wrap{display:flex;align-items:center;gap:28px;height:74px;}
.brand{display:flex;align-items:center;gap:11px;flex-shrink:0;}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--ink-deep);
  color:#fff;font-weight:800;font-size:15px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:.02em;
  position:relative;
}
.brand-mark::after{content:"";position:absolute;right:6px;bottom:6px;width:7px;height:7px;border-radius:50%;background:var(--flame);}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:15.5px;font-weight:800;color:var(--ink-deep);letter-spacing:.01em;}
.brand-text em{font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-link{
  position:relative;
  padding:9px 13px;border-radius:9px;
  font-size:14.5px;font-weight:500;color:#2C3630;
  white-space:nowrap;
}
.nav-link:hover{background:#EFF3EF;color:var(--ink);}
.nav-link.active{color:var(--ink);font-weight:700;background:#EAF1EC;}
.nav-link.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;background:var(--flame);
}
.mega-wrap{position:relative;flex-shrink:0;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 16px;border-radius:var(--radius-btn);
  background:var(--ink);color:#fff;font-size:14px;font-weight:600;
  transition:background .2s ease,transform .2s ease;
}
.mega-trigger::after{content:"";width:6px;height:6px;border-right:2px solid rgba(255,255,255,.85);border-bottom:2px solid rgba(255,255,255,.85);transform:rotate(45deg) translateY(-2px);transition:transform .2s ease;}
.mega-trigger:hover{background:#0d6d5b;transform:translateY(-2px);}
.mega-wrap:hover .mega-trigger::after,
.mega-wrap:focus-within .mega-trigger::after{transform:rotate(225deg) translateY(-1px);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);
  width:620px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-3);
  padding:24px;
  display:grid;grid-template-columns:1fr 1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s;
  overflow:hidden;
}
.mega-panel::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--ink);}
.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
.mega-col-title{font-size:12.5px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:12px;text-transform:uppercase;}
.mega-list li+li{margin-top:2px;}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:9px 11px;border-radius:9px;font-size:14.5px;color:#2C3630;
}
.mega-list a:hover{background:#F2F6F3;color:var(--ink);}
.mega-list a span{color:var(--flame);opacity:0;transition:opacity .2s ease;}
.mega-list a:hover span{opacity:1;}
.mega-cards{display:grid;gap:12px;align-content:start;}
.mega-card{display:block;border:1px solid var(--line);border-radius:13px;overflow:hidden;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;}
.mega-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#CFDCD4;}
.mega-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#E7ECE7;}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover;}
.mega-card .cap{padding:10px 12px;font-size:13.5px;font-weight:600;color:var(--ink-deep);}

.drawer-state{display:none;}
.drawer-btn{
  display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  align-items:center;justify-content:center;flex-direction:column;gap:5px;background:#fff;
}
.drawer-btn span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink-deep);}
.drawer{
  position:fixed;inset:0 0 0 auto;width:min(88vw,360px);z-index:70;
  background:#fff;box-shadow:-12px 0 40px rgba(11,21,18,.16);
  transform:translateX(100%);transition:transform .26s ease;
  padding:26px 22px 40px;overflow-y:auto;
}
.drawer-close{
  position:absolute;top:16px;right:16px;width:38px;height:38px;border-radius:10px;
  background:#F1F4F1;display:flex;align-items:center;justify-content:center;
  font-size:20px;color:var(--ink-deep);line-height:1;
}
.drawer-title{font-size:12.5px;letter-spacing:.08em;color:var(--muted);font-weight:700;margin:26px 0 10px;text-transform:uppercase;}
.drawer-links a{
  display:flex;align-items:center;justify-content:space-between;
  padding:13px 12px;border-radius:11px;font-size:15.5px;font-weight:500;color:#2C3630;
  border-bottom:1px solid #F0F3F0;
}
.drawer-links a::after{content:"›";color:var(--flame);font-size:18px;}
.drawer-links a:hover{background:#F2F6F3;color:var(--ink);}
.drawer-state:checked ~ .drawer{transform:translateX(0);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(7,59,51,.42);z-index:65;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s;
}
.drawer-state:checked ~ .drawer-mask{opacity:1;visibility:visible;}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease,color .2s ease,border-color .2s ease;
  border:1px solid transparent;
}
.btn-primary{background:var(--flame);color:#fff;box-shadow:0 6px 18px rgba(255,90,31,.26);}
.btn-primary:hover{background:#E84E14;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,90,31,.3);}
.btn-ink{background:var(--ink);color:#fff;}
.btn-ink:hover{background:#0d6d5b;transform:translateY(-2px);}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}
.btn-outline{background:#fff;color:var(--ink-deep);border-color:var(--line);}
.btn-outline:hover{border-color:var(--ink);color:var(--ink);transform:translateY(-2px);}
.btn:active{transform:translateY(0);}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background-image:linear-gradient(105deg, rgba(7,59,51,.82) 0%, rgba(7,59,51,.70) 52%, rgba(11,93,78,.62) 100%), url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  color:#fff;
  padding:82px 0 72px;
  overflow:hidden;
}
.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:.5;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.35fr .85fr;gap:48px;align-items:center;}
.hero-tag{
  display:inline-flex;align-items:center;gap:9px;
  padding:7px 15px;border-radius:999px;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);
  font-size:13px;font-weight:600;letter-spacing:.04em;color:#DFF3EC;
  margin-bottom:22px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--spark);display:block;font-style:normal;}
.hero h1{
  font-size:clamp(30px,4.4vw,50px);
  font-weight:800;line-height:1.24;letter-spacing:-.02em;
  max-width:16em;
}
.hero h1 em{font-style:normal;color:var(--spark);}
.hero-sub{margin-top:20px;font-size:17px;line-height:1.85;color:rgba(255,255,255,.86);max-width:34em;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}
.hero-metrics{
  display:flex;align-items:center;gap:22px;margin-top:38px;flex-wrap:wrap;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.18);
}
.hero-metrics span{font-size:13.5px;color:rgba(255,255,255,.72);display:inline-flex;align-items:center;gap:8px;}
.hero-metrics span+span{padding-left:22px;border-left:1px solid rgba(255,255,255,.22);}
.hero-metrics b{font-size:17px;color:#fff;font-weight:700;}
.hero-panel{
  background:rgba(255,255,255,.94);
  border-radius:18px;padding:26px 26px 22px;
  color:var(--body);
  box-shadow:0 24px 60px rgba(3,26,22,.32);
}
.hero-panel h2{font-size:15px;font-weight:700;color:var(--ink-deep);display:flex;align-items:center;justify-content:space-between;}
.hero-panel h2 span{font-size:12px;font-weight:600;color:var(--flame);letter-spacing:.04em;}
.hero-panel-row{display:flex;align-items:baseline;justify-content:space-between;gap:14px;padding:15px 0;border-bottom:1px solid #EDF1ED;}
.hero-panel-row:last-of-type{border-bottom:none;}
.hero-panel-row .val{font-size:26px;font-weight:800;color:var(--ink-deep);}
.hero-panel-row .val small{font-size:13px;font-weight:600;color:var(--muted);margin-left:4px;}
.hero-panel-row .lab{font-size:13.5px;color:var(--muted);text-align:right;}
.hero-panel-foot{
  margin-top:16px;padding-top:14px;border-top:1px dashed #DCE4DD;
  font-size:12.5px;color:var(--muted);
}

/* ---------- Stat cards ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.stat-card{
  position:relative;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius-card);padding:28px 24px 24px;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease;
}
.stat-card::before{content:"";position:absolute;top:0;left:24px;right:24px;height:2px;border-radius:2px;background:var(--ink);}
.stat-card:nth-child(2)::before{background:var(--flame);}
.stat-card:nth-child(3)::before{background:var(--spark);}
.stat-card:nth-child(4)::before{background:var(--ink-deep);}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-3);}
.stat-value{font-size:clamp(34px,3.4vw,48px);font-weight:800;color:var(--ink-deep);line-height:1.1;}
.stat-value small{font-size:16px;font-weight:600;color:var(--muted);margin-left:5px;}
.stat-label{margin-top:12px;font-size:14px;color:var(--muted);line-height:1.7;}
.stat-trend{margin-top:14px;font-size:13px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.stat-trend.up{color:var(--flame);}
.stat-trend.ok{color:#0F9E80;}

/* ---------- Service bento ---------- */
.bento{display:grid;grid-template-columns:repeat(4,1fr);grid-auto-rows:minmax(196px,auto);gap:24px;}
.bento-main{
  grid-column:span 2;grid-row:span 2;
  background:var(--ink-deep);color:#fff;border-radius:18px;overflow:hidden;
  display:flex;flex-direction:column;
  position:relative;
  box-shadow:var(--shadow-2);
}
.bento-main .bento-img{height:190px;overflow:hidden;background:#0a4b40;}
.bento-main .bento-img img{width:100%;height:100%;object-fit:cover;opacity:.72;transition:transform .3s ease,opacity .3s ease;}
.bento-main:hover .bento-img img{transform:scale(1.03);opacity:.85;}
.bento-main .bento-body{padding:26px 28px 28px;display:flex;flex-direction:column;flex:1;}
.bento-main h3{font-size:22px;font-weight:700;margin-bottom:12px;}
.bento-main p{font-size:15px;color:rgba(255,255,255,.8);line-height:1.8;}
.bento-main .text-link{margin-top:auto;padding-top:18px;color:var(--spark);}
.bento-main .text-link:hover{color:#fff;}
.bento-main .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px;}
.bento-main .tags span{font-size:12.5px;padding:4px 11px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18);color:#D9EFE8;}
.bento-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;display:flex;flex-direction:column;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.bento-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-3);border-color:#CFDCD4;}
.bento-icon{
  width:42px;height:42px;border-radius:12px;background:#EAF3EE;color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:800;
  margin-bottom:16px;
}
.bento-card h3{font-size:18px;font-weight:700;margin-bottom:9px;color:var(--ink-deep);}
.bento-card p{font-size:14.5px;color:var(--muted);line-height:1.8;}
.bento-card .text-link{margin-top:auto;padding-top:16px;}

/* ---------- Post grid (CMS) ---------- */
.post-panel{
  background:#fff;border:1px solid var(--line);border-radius:22px;
  padding:40px 36px;box-shadow:var(--shadow-1);
}
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;display:flex;flex-direction:column;
  box-shadow:var(--shadow-1);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-3);border-color:#CFDCD4;}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:#E7ECE7;display:block;}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.post-card:hover .post-thumb img{transform:scale(1.03);}
.post-body{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;
  padding:4px 11px;border-radius:999px;
  background:#EAF3EE;color:#0A5145;font-size:12px;font-weight:600;letter-spacing:.02em;
  align-self:flex-start;
}
.post-title{
  margin-top:13px;font-size:17px;font-weight:700;line-height:1.55;color:var(--ink-deep);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color .2s ease;
}
.post-card:hover .post-title{color:var(--ink);}
.post-summary{
  margin-top:10px;font-size:14px;color:var(--muted);line-height:1.78;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-foot{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  font-size:12.5px;color:#7B857F;border-top:1px solid #F1F4F1;
}
.post-foot .arrow{color:var(--flame);font-weight:700;transition:transform .2s ease;}
.post-card:hover .post-foot .arrow{transform:translateX(3px);}
.empty-state{
  min-height:260px;border:1px dashed #D3DDD6;border-radius:18px;background:#FAFBFA;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;padding:36px 20px;
}
.empty-state .shape{
  width:64px;height:64px;border-radius:18px;background:#EAF3EE;color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;
}
.empty-state p{font-size:15px;color:var(--muted);}

/* ---------- Compare ---------- */
.compare-wrap{display:grid;grid-template-columns:1fr 76px 1fr;gap:24px;align-items:stretch;}
.compare-col{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:28px;box-shadow:var(--shadow-1);}
.compare-col.after{border-color:#BFE3D7;background:#F7FDFA;}
.compare-head{font-size:13px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:8px;}
.compare-col.after .compare-head{color:#0F9E80;}
.compare-col h3{font-size:19px;font-weight:700;color:var(--ink-deep);margin-bottom:16px;}
.compare-col li{position:relative;padding-left:24px;font-size:14.8px;color:#3B453F;line-height:1.85;margin-bottom:10px;}
.compare-col li::before{content:"—";position:absolute;left:0;color:#B6C0BA;}
.compare-col.after li::before{content:"✓";color:var(--spark);font-weight:700;}
.compare-arrow{
  display:flex;align-items:center;justify-content:center;
  font-size:22px;color:var(--flame);font-weight:700;
}
.compare-arrow span{
  width:56px;height:56px;border-radius:50%;background:#FFF1EA;
  display:flex;align-items:center;justify-content:center;border:1px solid #FFD9C7;
}
.bars{margin-top:36px;display:grid;gap:20px;}
.bar-row{display:grid;grid-template-columns:180px 1fr 62px;gap:18px;align-items:center;}
.bar-row .name{font-size:14.5px;font-weight:600;color:#2C3630;}
.bar-row .track{height:12px;border-radius:999px;background:#E8EDE9;overflow:hidden;}
.bar-row .fill{height:100%;border-radius:999px;background:var(--ink);}
.bar-row:nth-child(2) .fill{background:var(--spark);}
.bar-row:nth-child(3) .fill{background:var(--flame);}
.bar-row .pct{font-size:14px;font-weight:700;color:var(--ink-deep);text-align:right;}

/* ---------- FAQ ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;box-shadow:var(--shadow-1);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:last-child{border-bottom:none;}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;gap:16px;
  padding:22px 26px;
  font-size:16.5px;font-weight:600;color:var(--ink-deep);
  transition:background .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:#F7FAF8;color:var(--ink);}
.faq-item summary .idx{font-size:13px;font-weight:700;color:var(--flame);font-variant-numeric:tabular-nums;flex-shrink:0;}
.faq-item summary .q{flex:1;}
.faq-item summary .sign{
  position:relative;width:18px;height:18px;flex-shrink:0;
  transition:transform .2s ease;
}
.faq-item summary .sign::before,
.faq-item summary .sign::after{
  content:"";position:absolute;background:#9AA7A0;border-radius:2px;
}
.faq-item summary .sign::before{top:8px;left:0;width:18px;height:2px;}
.faq-item summary .sign::after{left:8px;top:0;width:2px;height:18px;transition:opacity .2s ease;}
.faq-item[open] summary .sign{transform:rotate(180deg);}
.faq-item[open] summary .sign::after{opacity:0;}
.faq-item[open] summary{background:#F4F9F6;}
.faq-body{padding:0 26px 24px 62px;font-size:15px;color:#48524C;line-height:1.85;}

/* ---------- CTA / form ---------- */
.cta-section{
  background:var(--ink-deep);color:#fff;border-radius:24px;
  padding:56px 52px;
  display:grid;grid-template-columns:.9fr 1.1fr;gap:48px;
  position:relative;overflow:hidden;
}
.cta-section::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;border-radius:50%;
  background:radial-gradient(circle, rgba(35,210,176,.18) 0%, rgba(35,210,176,0) 68%);
}
.cta-section h2{font-size:clamp(24px,2.8vw,32px);font-weight:700;line-height:1.35;}
.cta-section p{margin-top:16px;color:rgba(255,255,255,.78);font-size:15.5px;line-height:1.85;}
.cta-points{margin-top:26px;display:grid;gap:12px;}
.cta-points li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.85);}
.cta-points li::before{content:"✓";color:var(--spark);font-weight:700;}
.lead-form{
  background:#fff;color:var(--body);border-radius:18px;padding:30px;
  display:grid;gap:16px;position:relative;z-index:2;
  box-shadow:0 20px 50px rgba(3,26,22,.28);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.field{display:grid;gap:7px;}
.field label{font-size:13.5px;font-weight:600;color:#38423C;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  border:1px solid var(--line);background:#FBFCFB;
  font-size:15px;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.field textarea{resize:vertical;min-height:104px;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);background:#F1F8F4;box-shadow:0 0 0 3px rgba(11,93,78,.12);
}
.form-note{font-size:13px;color:var(--muted);line-height:1.7;}
.lead-form .btn{width:100%;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:var(--section);}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;}
.footer-brand{display:flex;align-items:center;gap:11px;margin-bottom:18px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.1);}
.footer-brand strong{color:#fff;font-size:16.5px;font-weight:700;display:block;}
.footer-brand em{font-style:normal;font-size:12px;color:rgba(255,255,255,.6);}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.68);max-width:34em;}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;letter-spacing:.04em;margin-bottom:18px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);}
.footer-col a:hover{color:var(--flame);}
.footer-col address{font-style:normal;font-size:14.5px;line-height:2;color:rgba(255,255,255,.72);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  padding:22px 0;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.58);
}

/* ---------- Responsive ---------- */
@media (max-width:1180px){
  .mega-panel{width:540px;}
}
@media (max-width:1024px){
  :root{--section:72px;}
  .container{padding:0 24px;}
  .main-nav,.mega-wrap{display:none;}
  .drawer-btn{display:flex;margin-left:auto;}
  .nav-wrap{height:66px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero{padding:64px 0 56px;}
  .stat-grid{grid-template-columns:repeat(2,1fr);}
  .bento{grid-template-columns:repeat(2,1fr);}
  .bento-main{grid-column:span 2;grid-row:auto;}
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .compare-wrap{grid-template-columns:1fr;gap:16px;}
  .compare-arrow span{transform:rotate(90deg);}
  .cta-section{grid-template-columns:1fr;gap:32px;padding:44px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .bar-row{grid-template-columns:140px 1fr 56px;gap:14px;}
}
@media (max-width:640px){
  :root{--section:56px;}
  body{font-size:16px;}
  .container{padding:0 20px;}
  .section-head{margin-bottom:28px;}
  .hero{padding:52px 0 46px;}
  .hero-metrics{gap:14px;}
  .hero-metrics span+span{padding-left:14px;}
  .hero-panel{padding:22px 20px 18px;}
  .hero-panel-row{flex-direction:column;align-items:flex-start;gap:4px;}
  .hero-panel-row .lab{text-align:left;}
  .stat-grid{grid-template-columns:1fr;}
  .bento{grid-template-columns:1fr;}
  .bento-main{grid-column:span 1;}
  .post-panel{padding:24px 18px;border-radius:18px;}
  .post-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;}
  .cta-section{padding:34px 22px;border-radius:20px;}
  .lead-form{padding:22px 18px;}
  .faq-item summary{padding:18px 18px;font-size:15.5px;gap:12px;}
  .faq-body{padding:0 18px 20px 18px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .bar-row{grid-template-columns:1fr;gap:8px;}
  .bar-row .pct{text-align:left;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: article */
:root{
  --green:#0B5D4E;
  --green-deep:#073B33;
  --orange:#FF5A1F;
  --cyan:#23D2B0;
  --bg:#F6F7F4;
  --card:#FFFFFF;
  --ink:#111814;
  --muted:#55605A;
  --line:#E4E8E2;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(11,21,18,.06), 0 8px 24px rgba(11,21,18,.06);
  --shadow-lift:0 14px 32px rgba(11,21,18,.12);
  --ease:200ms cubic-bezier(.4,0,.2,1);
}
*,*::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:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--ease);}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
ul,ol{padding-left:1.15em;}
:focus-visible{outline:2px solid var(--green);outline-offset:2px;border-radius:4px;}

.container{max-width:1200px;margin:0 auto;padding:0 32px;}
@media (min-width:1400px){.container{max-width:1280px;}}
@media (max-width:640px){.container{padding:0 20px;}}

/* ============ 头部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.is-stuck{box-shadow:0 6px 24px rgba(11,21,18,.08);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:74px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(150deg,var(--green) 0%,var(--green-deep) 100%);
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.5px;
  display:flex;align-items:center;justify-content:center;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-size:15.5px;font-weight:700;letter-spacing:.02em;}
.brand-text em{font-style:normal;font-size:12px;color:var(--muted);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:12px;}
.nav-link{
  position:relative;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:500;color:#2C3733;
  white-space:nowrap;
}
.nav-link:hover{color:var(--green);background:var(--brand-soft,#E7F1EE);}
.nav-link.active{color:var(--green);font-weight:700;}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  border-radius:2px;background:var(--orange);
}
.nav-right{margin-left:auto;display:flex;align-items:center;gap:12px;}

.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:10px;
  font-size:15px;font-weight:600;color:#2C3733;
  border:1px solid var(--line);
  background:#fff;
  transition:all var(--ease);
}
.mega-trigger:hover{border-color:var(--green);color:var(--green);}
.mega-trigger .caret{width:14px;height:14px;transition:transform var(--ease);}
.mega-wrap:hover .caret,.mega-wrap:focus-within .caret{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);
  width:600px;
  background:#fff;border:1px solid var(--line);border-radius:18px;
  box-shadow:var(--shadow-lift);
  padding:22px;
  display:grid;grid-template-columns:1fr 1fr;gap:22px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity 160ms ease,transform 160ms ease,visibility 160ms;
  overflow:hidden;
}
.mega-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--green);
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-col h5{
  margin:0 0 10px;font-size:13px;font-weight:700;color:var(--muted);
  letter-spacing:.14em;
}
.mega-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:2px;}
.mega-list a{
  display:block;padding:8px 10px;border-radius:9px;
  font-size:14.5px;color:#2C3733;
}
.mega-list a:hover{background:#F1F4F1;color:var(--green);}
.mega-card{
  display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  background:#fff;transition:all var(--ease);
}
.mega-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:#CFD8D2;}
.mega-card .thumb{aspect-ratio:16/9;background:#EEF1ED;overflow:hidden;}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover;}
.mega-card .txt{padding:10px 12px 12px;}
.mega-card .txt strong{display:block;font-size:14px;font-weight:700;line-height:1.5;}
.mega-card .txt span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px;}

.menu-toggle{
  display:none;width:42px;height:42px;border-radius:11px;
  border:1px solid var(--line);align-items:center;justify-content:center;
}
.menu-toggle span{display:block;width:18px;height:2px;background:#2C3733;border-radius:2px;position:relative;}
.menu-toggle span::before,.menu-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:#2C3733;border-radius:2px;
}
.menu-toggle span::before{top:-6px;}
.menu-toggle span::after{top:6px;}

.drawer{
  position:fixed;inset:0;z-index:90;background:#fff;
  padding:22px 20px 40px;
  transform:translateX(100%);transition:transform 240ms ease;
  overflow-y:auto;
  display:none;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-close{
  width:42px;height:42px;border-radius:11px;border:1px solid var(--line);
  font-size:20px;line-height:1;color:#2C3733;
}
.drawer-group h6{
  margin:18px 0 8px;font-size:12.5px;letter-spacing:.16em;color:var(--muted);font-weight:700;
}
.drawer-group a{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 4px;border-bottom:1px solid var(--line);
  font-size:16px;font-weight:500;
}
.drawer-group a::after{content:"›";font-size:20px;color:#9AA5A0;line-height:1;}
.drawer-group a.active{color:var(--green);font-weight:700;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  transition:transform var(--ease),background var(--ease),box-shadow var(--ease),color var(--ease);
  border:1px solid transparent;white-space:nowrap;
}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-primary{background:var(--orange);color:#fff;box-shadow:0 6px 18px rgba(255,90,31,.24);}
.btn-primary:hover{background:#E94E14;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,90,31,.3);}
.btn-green{background:var(--green);color:#fff;}
.btn-green:hover{background:#0A5044;transform:translateY(-2px);}
.btn-ghost{background:#fff;color:var(--green);border-color:#C9D8D3;}
.btn-ghost:hover{border-color:var(--green);background:#F2F7F5;transform:translateY(-2px);}
.btn-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.45);}
.btn-line:hover{background:rgba(255,255,255,.12);transform:translateY(-2px);}

/* ============ 面包屑 ============ */
.crumb-bar{padding:22px 0 0;font-size:13.5px;color:var(--muted);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;margin:0;padding:0;}
.crumb li{display:flex;align-items:center;gap:8px;}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--green);}
.crumb .sep{color:#B6C0BB;}
.crumb .now{color:#2C3733;font-weight:600;max-width:520px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ============ 文章头部 ============ */
.article-hero{padding:26px 0 0;}
.article-shell{max-width:860px;margin:0 auto;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  font-size:12.5px;font-weight:700;letter-spacing:.04em;
}
.badge-cat{background:var(--brand-soft,#E7F1EE);color:var(--green);}
.badge-accent{background:#FFEDE6;color:#D6430F;}
.article-h1{
  margin:18px 0 14px;
  font-size:clamp(28px,4.2vw,44px);
  font-weight:800;line-height:1.32;letter-spacing:-.01em;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:14px;color:var(--muted);
  padding-bottom:22px;border-bottom:1px solid var(--line);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:#C3CCC7;}
.meta-row .num{font-family:"SF Mono","JetBrains Mono",ui-monospace,Menlo,monospace;font-variant-numeric:tabular-nums;}

/* ============ 正文 ============ */
.article-body{padding:38px 0 0;}
.post-body{
  max-width:72ch;margin:0 auto;
  font-size:17px;line-height:1.85;color:#1B2420;
}
.post-body > * + *{margin-top:1em;}
.post-body p{margin:0;}
.post-body h2{
  position:relative;
  margin:2em 0 .7em;padding-left:16px;
  font-size:clamp(21px,2.6vw,27px);font-weight:700;line-height:1.45;color:#0F1714;
}
.post-body h2::before{
  content:"";position:absolute;left:0;top:.22em;bottom:.22em;width:3px;border-radius:3px;background:var(--green);
}
.post-body h3{margin:1.5em 0 .5em;font-size:20px;font-weight:700;line-height:1.5;color:#0F1714;}
.post-body h4{margin:1.2em 0 .4em;font-size:17.5px;font-weight:700;}
.post-body ul,.post-body ol{padding-left:1.3em;}
.post-body li{margin:.45em 0;}
.post-body li::marker{color:var(--green);font-weight:700;}
.post-body blockquote{
  margin:1.6em 0;padding:18px 22px;
  background:#fff;border-left:3px solid var(--orange);border-radius:0 12px 12px 0;
  color:#33403A;box-shadow:var(--shadow-card);
}
.post-body blockquote p{margin:0;}
.post-body img{border-radius:14px;margin:1.6em 0;box-shadow:var(--shadow-card);}
.post-body a{color:var(--green);font-weight:600;border-bottom:1px solid rgba(11,93,78,.3);}
.post-body a:hover{color:var(--orange);border-color:rgba(255,90,31,.4);}
.post-body code{
  background:#EDF1EE;padding:2px 6px;border-radius:6px;font-size:14.5px;
  font-family:"SF Mono","JetBrains Mono",ui-monospace,Menlo,monospace;
}
.post-body table{
  width:100%;border-collapse:separate;border-spacing:0;
  margin:1.8em 0;font-size:15.5px;background:#fff;
  border:1px solid var(--line);border-radius:14px;overflow:hidden;
}
.post-body thead th{
  background:var(--green-deep);color:#fff;font-weight:600;
  padding:14px 16px;text-align:left;font-size:14.5px;
}
.post-body tbody td{padding:14px 16px;border-top:1px solid var(--line);vertical-align:top;}
.post-body tbody tr:nth-child(even) td{background:#FAFBFA;}
.post-body hr{margin:2.4em 0;border:0;border-top:1px solid var(--line);}

.notice{
  max-width:72ch;margin:0 auto;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:36px 32px;text-align:center;box-shadow:var(--shadow-card);
}
.notice h2{margin:14px 0 8px;font-size:22px;font-weight:700;}
.notice p{margin:0 0 20px;color:var(--muted);font-size:15px;}
.notice-icon{
  width:56px;height:56px;margin:0 auto;border-radius:16px;
  background:var(--brand-soft,#E7F1EE);color:var(--green);
  display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;
}

/* ============ 相关推荐 ============ */
.section{padding:74px 0 0;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:26px;}
.section-head h2{margin:0;font-size:clamp(22px,2.8vw,30px);font-weight:700;line-height:1.35;}
.section-head p{margin:8px 0 0;font-size:15px;color:var(--muted);}
.link-more{font-size:15px;font-weight:700;color:var(--green);display:inline-flex;align-items:center;gap:6px;}
.link-more:hover{color:var(--orange);gap:10px;}

.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
@media (max-width:1024px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:640px){.card-grid{grid-template-columns:1fr;}}

.post-card{
  display:flex;flex-direction:column;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:#CFD8D2;}
.post-card .cover{aspect-ratio:16/9;background:#EDF1EE;overflow:hidden;}
.post-card .cover img{width:100%;height:100%;object-fit:cover;transition:transform var(--ease);}
.post-card:hover .cover img{transform:scale(1.03);}
.post-card .inner{padding:20px 20px 22px;display:flex;flex-direction:column;flex:1;gap:10px;}
.post-card h3{margin:0;font-size:18px;font-weight:700;line-height:1.5;transition:color var(--ease);}
.post-card:hover h3{color:var(--green);}
.post-card p{margin:0;font-size:14.5px;line-height:1.8;color:var(--muted);}
.post-card .foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13.5px;color:var(--muted);
}
.post-card .foot .go{color:var(--green);font-weight:700;}

.back-band{
  margin-top:42px;display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:16px;
  padding:24px;border:1px dashed #CFD8D2;border-radius:var(--radius-card);background:#FBFCFB;
  font-size:15px;color:var(--muted);
}
.back-band .btn{font-size:14px;}

/* ============ 底部转化条 ============ */
.cta-band{
  margin-top:84px;
  background:var(--green-deep);
  color:#fff;position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  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:52px 52px;pointer-events:none;
}
.cta-inner{
  position:relative;z-index:1;
  padding:70px 0;
  display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;
}
.cta-inner h2{margin:0 0 12px;font-size:clamp(23px,3vw,32px);font-weight:700;line-height:1.4;}
.cta-inner p{margin:0;font-size:16px;color:rgba(255,255,255,.78);max-width:560px;}
.cta-points{list-style:none;margin:16px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:10px 26px;}
.cta-points li{font-size:14.5px;color:rgba(255,255,255,.82);display:flex;align-items:center;gap:8px;}
.cta-points li::before{content:"✓";color:var(--cyan);font-weight:800;}
.cta-actions{display:flex;flex-direction:column;gap:14px;}
.cta-actions .btn{width:100%;}
.cta-note{font-size:13px;color:rgba(255,255,255,.6);text-align:center;}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:0;background:var(--green-deep);color:rgba(255,255,255,.78);
  padding:64px 0 0;
}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1fr;gap:40px;
  padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);}
.footer-brand strong{display:block;color:#fff;font-size:15.5px;font-weight:700;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.6);letter-spacing:.04em;}
.footer-desc{margin:0;font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);max-width:420px;}
.footer-col h4{margin:0 0 16px;color:#fff;font-size:15px;font-weight:700;}
.footer-col ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.75);}
.footer-col a:hover{color:var(--orange);}
.footer-col address{font-style:normal;font-size:14px;line-height:2;color:rgba(255,255,255,.75);}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding:22px 0 28px;font-size:13px;color:rgba(255,255,255,.58);
}

@media (max-width:1100px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .drawer{display:block;}
  .mega-wrap{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .cta-inner{grid-template-columns:1fr;gap:28px;padding:56px 0;}
}
@media (max-width:640px){
  .nav-wrap{height:66px;}
  .brand-text em{display:none;}
  .crumb-bar{padding-top:16px;}
  .section{padding:56px 0 0;}
  .article-body{padding-top:28px;}
  .post-body{font-size:16px;}
  .site-footer{padding-top:48px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{font-size:12.5px;}
  .back-band{padding:20px 16px;text-align:center;}
  .cta-band{margin-top:56px;}
}

/* roulang page: category2 */
:root{
  --ink:#0B5D4E;
  --ink-deep:#073B33;
  --flame:#FF5A1F;
  --aqua:#23D2B0;
  --bg:#F6F7F4;
  --card:#FFFFFF;
  --text:#111814;
  --muted:#55605A;
  --line:#E4E8E2;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-s:0 1px 2px rgba(11,21,18,.06);
  --shadow-m:0 1px 2px rgba(11,21,18,.06), 0 8px 24px rgba(11,21,18,.06);
  --shadow-l:0 1px 2px rgba(11,21,18,.06), 0 14px 32px rgba(11,21,18,.10);
  --container:1200px;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--ink);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.container-narrow{max-width:920px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(11,21,18,.08)}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:72px;
}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{
  width:40px;height:40px;border-radius:12px;
  background:var(--ink-deep);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--mono);font-weight:700;font-size:15px;letter-spacing:.5px;
  border:1px solid rgba(255,255,255,.16);
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.2px}
.logo-text em{
  font-style:normal;font-size:12.5px;color:var(--muted);letter-spacing:.2px;
}
.nav-area{display:flex;align-items:center;gap:8px}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  display:inline-flex;align-items:center;
  padding:9px 14px;border-radius:var(--radius-btn);
  font-size:15px;color:var(--muted);font-weight:500;
  white-space:nowrap;
}
.nav-link:hover{color:var(--ink);background:#EDF3F0}
.nav-link.active{color:var(--ink);background:#E8F1ED;font-weight:600}
.nav-link.active::after{
  content:"";display:inline-block;width:6px;height:6px;border-radius:50%;
  background:var(--flame);margin-left:8px;
}

/* ---------- mega ---------- */
.mega{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;
  font-size:14.5px;font-weight:600;color:var(--ink);
  cursor:pointer;
}
.mega-trigger:hover{border-color:var(--ink);box-shadow:var(--shadow-s)}
.mega-trigger .caret{
  width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;
  transform:rotate(45deg) translateY(-2px);transition:transform .2s ease;
}
.mega:hover .caret,.mega:focus-within .caret{transform:rotate(225deg) translateY(-2px)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);
  width:640px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-l);
  padding:24px;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
  overflow:hidden;
}
.mega-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--ink);
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:24px;padding-top:8px}
.mega-title{font-size:12.5px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;margin-bottom:12px}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;
  padding:9px 10px;border-radius:9px;font-size:14.5px;color:var(--text);
}
.mega-list a:hover{background:#F2F7F4;color:var(--ink)}
.mega-list a span{font-size:12px;color:var(--muted);font-family:var(--mono)}
.mega-card{
  display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;
  transition:transform .2s ease,box-shadow .2s ease;
}
.mega-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-m)}
.mega-card .thumb{aspect-ratio:16/9;overflow:hidden;background:#E9EEEA}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover}
.mega-card .meta{padding:10px 12px 12px}
.mega-card strong{display:block;font-size:14.5px;font-weight:600}
.mega-card small{display:block;color:var(--muted);font-size:12.5px;margin-top:2px}
.mega-cards{display:grid;gap:14px}

/* ---------- drawer ---------- */
.hamburger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:var(--radius-btn);cursor:pointer;padding:0;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.hamburger span{display:block;width:18px;height:2px;background:var(--ink-deep);border-radius:2px}
.drawer{
  position:fixed;inset:0;z-index:80;background:#fff;display:none;
  flex-direction:column;padding:22px 22px 40px;overflow-y:auto;
}
.drawer.open{display:flex}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--radius-btn);border:1px solid var(--line);
  background:#fff;cursor:pointer;font-size:20px;line-height:1;color:var(--ink-deep);
}
.drawer-group-title{font-size:12.5px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase;margin:20px 0 8px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 4px;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;
}
.drawer-link.active{color:var(--ink);font-weight:700}
.drawer-link i{font-style:normal;color:var(--muted);font-size:14px}

/* ---------- breadcrumb ---------- */
.crumbs{padding:22px 0 0}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13.5px;color:var(--muted)}
.crumbs li{display:flex;align-items:center;gap:10px}
.crumbs li+li::before{content:"›";color:#9AA5A0}
.crumbs a:hover{color:var(--ink)}
.crumbs [aria-current]{color:var(--text);font-weight:600}

/* ---------- hero ---------- */
.hero-sub{
  position:relative;margin-top:18px;border-radius:22px;overflow:hidden;
  background:var(--ink-deep);color:#fff;
  background-image:linear-gradient(115deg,rgba(7,59,51,.94),rgba(7,59,51,.78)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border:1px solid rgba(255,255,255,.12);
}
.hero-sub::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.16;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 78%);
}
.hero-sub-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:1.05fr .95fr;gap:44px;
  padding:52px 48px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  padding:6px 14px;border-radius:999px;font-size:13px;letter-spacing:.02em;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.2);color:#E9F5F1;
}
.eyebrow i{width:6px;height:6px;border-radius:50%;background:var(--aqua);display:inline-block;font-style:normal}
.hero-sub h1{
  font-size:clamp(30px,4.2vw,46px);line-height:1.25;font-weight:800;letter-spacing:-.01em;
  margin:20px 0 16px;color:#fff;
}
.hero-sub h1 em{font-style:normal;color:var(--aqua)}
.hero-sub p.lead{color:#C6D8D3;font-size:16.5px;max-width:56ch;line-height:1.85}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-figure{border-radius:16px;overflow:hidden;background:#0C4B40;border:1px solid rgba(255,255,255,.16)}
.hero-figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:16px}
.hero-stat{
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
  border-radius:12px;padding:12px 14px;
}
.hero-stat b{display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:19px;color:#fff;line-height:1.3}
.hero-stat span{font-size:12.5px;color:#B9CFC9}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-primary{background:var(--flame);color:#fff;box-shadow:0 6px 18px rgba(255,90,31,.28)}
.btn-primary:hover{background:#E84E14;transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.08);color:#fff;border-color:rgba(255,255,255,.36)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}
.btn-outline{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-outline:hover{border-color:var(--ink);transform:translateY(-2px);box-shadow:var(--shadow-s)}

/* ---------- sections ---------- */
.block{padding:56px 0}
.block-tight{padding:40px 0}
.block-dark{
  background:var(--ink-deep);color:#fff;position:relative;
  background-image:linear-gradient(120deg,rgba(7,59,51,.92),rgba(7,59,51,.96)),url('/assets/images/backpic/back-3.png');
  background-size:cover;background-position:center;
}
.section-head{max-width:760px;margin-bottom:36px}
.section-label{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;letter-spacing:.08em;
  color:var(--ink);font-weight:600;text-transform:uppercase;margin-bottom:12px;
}
.section-label::before{content:"";width:22px;height:2px;background:var(--flame);display:inline-block;border-radius:2px}
.section-head h2{font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.35;letter-spacing:-.01em}
.section-head p{color:var(--muted);margin-top:14px;font-size:16px}
.block-dark .section-head h2{color:#fff}
.block-dark .section-head p{color:#B9CFC9}
.block-dark .section-label{color:var(--aqua)}

/* ---------- intro ---------- */
.intro-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:start}
.intro-lead{font-size:17px;line-height:1.9;color:#233029}
.intro-lead strong{color:var(--ink);font-weight:700}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.tag{
  display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--muted);
}
.tag::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--aqua)}
.intro-side{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-m);padding:24px;
}
.intro-side h3{font-size:18px;font-weight:700;margin-bottom:16px}
.intro-side li{display:flex;gap:12px;padding:11px 0;border-top:1px solid var(--line);font-size:14.5px;color:var(--muted)}
.intro-side li:first-of-type{border-top:none}
.intro-side li b{font-family:var(--mono);color:var(--ink);font-weight:700;font-size:13px;padding-top:3px}

/* ---------- timeline ---------- */
.timeline{position:relative;padding-left:0}
.timeline::before{
  content:"";position:absolute;left:23px;top:10px;bottom:26px;width:2px;
  background:repeating-linear-gradient(to bottom,var(--line) 0 8px,transparent 8px 16px);
}
.tl-item{position:relative;padding-left:76px;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:12px;top:6px;width:24px;height:24px;border-radius:50%;
  background:#fff;border:2px solid var(--ink);display:flex;align-items:center;justify-content:center;
}
.tl-dot::after{content:"";width:8px;height:8px;border-radius:50%;background:var(--flame)}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-s);padding:22px 24px;
  transition:transform .22s ease,box-shadow .22s ease;
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-l)}
.tl-head{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap}
.tl-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:15px;font-weight:700;color:var(--flame);letter-spacing:.06em}
.tl-head h3{font-size:20px;font-weight:700}
.tl-card p{color:var(--muted);font-size:15px;margin-top:10px}
.tl-points{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tl-points span{
  font-size:12.5px;color:var(--ink);background:#EDF5F1;border:1px solid #D8E7E0;
  padding:5px 11px;border-radius:999px;
}

/* ---------- metrics ---------- */
.metric-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.metric{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-card);padding:24px;position:relative;overflow:hidden;
}
.metric::before{content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:var(--aqua)}
.metric b{
  display:block;font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:clamp(30px,3.4vw,42px);font-weight:700;line-height:1.1;color:#fff;
}
.metric b em{font-style:normal;font-size:16px;color:var(--aqua);margin-left:4px}
.metric span{display:block;color:#B9CFC9;font-size:14px;margin-top:10px}
.metric p{color:#8FB0A9;font-size:13.5px;margin-top:8px}

/* ---------- trust ---------- */
.trust-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-item{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-s);transition:transform .22s ease,box-shadow .22s ease;
}
.trust-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-l)}
.trust-ico{
  width:38px;height:38px;border-radius:10px;background:#EDF5F1;color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:17px;font-weight:700;margin-bottom:14px;
  font-family:var(--mono);
}
.trust-item h3{font-size:16.5px;font-weight:700}
.trust-item p{color:var(--muted);font-size:14px;margin-top:8px}

/* ---------- faq ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-s);padding:6px 24px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:none}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:flex-start;gap:14px;
  padding:22px 0;font-weight:600;font-size:16.5px;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-num{font-family:var(--mono);font-variant-numeric:tabular-nums;color:var(--flame);font-size:13.5px;font-weight:700;padding-top:5px}
.faq-icon{
  margin-left:auto;width:24px;height:24px;flex-shrink:0;position:relative;margin-top:2px;
  transition:transform .18s ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--ink);border-radius:2px;
  transform:translate(-50%,-50%);
}
.faq-icon::before{width:13px;height:2px}
.faq-icon::after{width:2px;height:13px}
.faq-item[open] .faq-icon{transform:rotate(45deg)}
.faq-item[open] summary{color:var(--ink)}
.faq-answer{padding:0 44px 24px 34px;color:var(--muted);font-size:15px}

/* ---------- cta ---------- */
.cta-wrap{
  display:grid;grid-template-columns:1fr 1.05fr;gap:44px;align-items:start;
}
.cta-copy h2{font-size:clamp(26px,3vw,34px);font-weight:700;line-height:1.35}
.cta-copy p{color:#B9CFC9;margin-top:16px;font-size:16px;max-width:44ch}
.cta-list{margin-top:26px;display:grid;gap:12px}
.cta-list li{display:flex;gap:12px;align-items:flex-start;color:#D7E5E1;font-size:15px}
.cta-list li b{color:var(--aqua);font-family:var(--mono);font-size:13px;padding-top:4px}
.cta-card{
  background:#fff;color:var(--text);border-radius:18px;padding:30px;
  box-shadow:var(--shadow-l);border:1px solid var(--line);
}
.cta-card h3{font-size:20px;font-weight:700}
.cta-card > p{color:var(--muted);font-size:14px;margin-top:8px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field label{font-size:13.5px;font-weight:600;color:#2C3A33}
.field input,.field select,.field textarea{
  width:100%;padding:11px 13px;border:1px solid var(--line);border-radius:10px;
  background:#FBFCFA;font-size:15px;transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.field textarea{resize:vertical;min-height:104px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);background:#F1F8F4;box-shadow:0 0 0 3px rgba(11,93,78,.12);
}
.form-submit{margin-top:20px;width:100%}
.form-note{font-size:13px;color:var(--muted);margin-top:12px;line-height:1.7}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-deep);color:#C6D8D3;margin-top:0;
  padding:64px 0 26px;border-top:1px solid rgba(255,255,255,.1);
}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.2)}
.footer-brand strong{display:block;color:#fff;font-size:16px}
.footer-brand em{display:block;font-style:normal;font-size:12.5px;color:#93B3AC}
.footer-desc{font-size:14px;line-height:1.85;color:#9FBCB6;max-width:38ch}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:16px}
.footer-col ul{display:grid;gap:11px}
.footer-col a{font-size:14px;color:#B9CFC9}
.footer-col a:hover{color:var(--flame)}
.footer-col address{font-style:normal;font-size:14px;line-height:2;color:#B9CFC9}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FB0A9;
}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .mega-panel{width:560px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .main-nav,.mega{display:none}
  .hamburger{display:flex}
  .hero-sub-inner{grid-template-columns:1fr;padding:40px 30px;gap:30px}
  .intro-grid{grid-template-columns:1fr;gap:28px}
  .metric-grid{grid-template-columns:1fr 1fr}
  .trust-grid{grid-template-columns:1fr 1fr}
  .cta-wrap{grid-template-columns:1fr;gap:30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .block{padding:64px 0}
}
@media (max-width:639px){
  body{font-size:16px}
  .container{padding:0 20px}
  .block{padding:48px 0}
  .block-tight{padding:32px 0}
  .hero-sub-inner{padding:30px 20px}
  .hero-stats{grid-template-columns:1fr;gap:10px}
  .metric-grid,.trust-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .timeline::before{left:14px}
  .tl-item{padding-left:52px}
  .tl-dot{left:3px;width:22px;height:22px}
  .faq-list{padding:4px 18px}
  .faq-answer{padding:0 10px 22px 30px}
  .cta-card{padding:22px}
  .footer-bottom{flex-direction:column}
}

/* roulang page: category1 */
:root{
    --brand:#0B5D4E;
    --brand-deep:#073B33;
    --brand-soft:#E8F1EE;
    --accent:#FF5A1F;
    --accent-soft:#FFEDE5;
    --mint:#23D2B0;
    --mint-soft:#E2FAF4;
    --paper:#F6F7F4;
    --card:#FFFFFF;
    --ink:#111814;
    --muted:#55605A;
    --line:#E4E8E2;
    --shadow-card:0 1px 2px rgba(11,21,18,.06), 0 8px 24px rgba(11,21,18,.06);
    --shadow-lift:0 14px 32px rgba(11,21,18,.10);
    --radius-card:16px;
    --radius-btn:10px;
    --container:1200px;
    --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16.5px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font:inherit;color:inherit;}
  h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;letter-spacing:.2px;}
  p{margin:0 0 1em;}
  ul,ol{margin:0;padding:0;list-style:none;}
  address{font-style:normal;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px;}

  .container{
    width:100%;
    max-width:var(--container);
    margin:0 auto;
    padding:0 32px;
  }

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;
    top:0;
    z-index:50;
    background:#fff;
    border-bottom:1px solid var(--line);
    transition:box-shadow .22s ease;
  }
  .site-header.is-scrolled{box-shadow:0 8px 24px rgba(11,21,18,.08);}
  .header-inner{
    display:flex;
    align-items:center;
    gap:28px;
    min-height:74px;
  }
  .brand{
    display:flex;
    align-items:center;
    gap:12px;
    flex-shrink:0;
  }
  .brand-mark{
    width:40px;height:40px;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-deep);
    color:#fff;
    font-family:var(--mono);
    font-weight:700;
    font-size:15px;
    letter-spacing:.5px;
    border-radius:12px;
    border-bottom:3px solid var(--accent);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;}
  .brand-text strong{font-size:16px;font-weight:700;color:var(--ink);}
  .brand-text em{font-style:normal;font-size:12.5px;color:var(--muted);}

  .main-nav{display:flex;align-items:center;gap:6px;margin-left:auto;}
  .nav-link{
    position:relative;
    display:inline-block;
    padding:9px 14px;
    border-radius:var(--radius-btn);
    font-size:15px;
    color:#2B3630;
    transition:background .2s ease,color .2s ease,transform .2s ease;
  }
  .nav-link:hover{background:var(--brand-soft);color:var(--brand-deep);}
  .nav-link.active{color:var(--brand-deep);font-weight:700;background:var(--brand-soft);}
  .nav-link.active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
    background:var(--accent);border-radius:2px;
  }

  .nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0;}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border:1px solid transparent;
    border-radius:var(--radius-btn);
    padding:12px 22px;
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    transition:transform .2s ease,background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
  }
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 6px 18px rgba(255,90,31,.24);}
  .btn-primary:hover{background:#E64E14;transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,90,31,.3);}
  .btn-solid{background:var(--brand);color:#fff;}
  .btn-solid:hover{background:#0A5245;transform:translateY(-2px);}
  .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
  .btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-2px);}
  .btn-outline{background:#fff;color:var(--brand-deep);border-color:var(--line);}
  .btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
  .btn-sm{padding:9px 16px;font-size:14px;}

  /* Mega 面板 */
  .mega-wrap{position:relative;}
  .mega-trigger{
    display:inline-flex;align-items:center;gap:6px;
    padding:9px 14px;border-radius:var(--radius-btn);
    background:var(--brand-soft);color:var(--brand-deep);
    font-size:14.5px;font-weight:600;border:1px solid transparent;cursor:pointer;
    transition:background .2s ease;
  }
  .mega-wrap:hover .mega-trigger,
  .mega-wrap:focus-within .mega-trigger{background:#DCEAE5;}
  .mega-caret{font-size:11px;transform:translateY(1px);}
  .mega-panel{
    position:absolute;right:0;top:calc(100% + 14px);
    width:640px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-lift);
    padding:24px;
    opacity:0;visibility:hidden;
    transform:translateY(10px);
    transition:opacity .16s ease,transform .16s ease,visibility .16s;
    overflow:hidden;
  }
  .mega-panel::before{
    content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--brand);
  }
  .mega-wrap:hover .mega-panel,
  .mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0);}
  .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
  .mega-title{
    font-size:12.5px;letter-spacing:1px;color:var(--muted);
    text-transform:uppercase;margin-bottom:12px;font-weight:700;
  }
  .mega-list li + li{margin-top:2px;}
  .mega-list a{
    display:flex;justify-content:space-between;align-items:center;
    padding:8px 10px;border-radius:8px;font-size:14.5px;color:#2B3630;
    transition:background .18s ease,color .18s ease;
  }
  .mega-list a:hover{background:var(--brand-soft);color:var(--brand-deep);}
  .mega-list span{color:var(--muted);font-size:12px;}
  .mega-card{
    display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;
    background:#fff;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  }
  .mega-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:#CFDAD5;}
  .mega-card .thumb{aspect-ratio:16/9;background:var(--brand-soft);overflow:hidden;}
  .mega-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease;}
  .mega-card:hover .thumb img{transform:scale(1.03);}
  .mega-card .txt{padding:12px 14px 14px;}
  .mega-card .txt strong{display:block;font-size:14.5px;margin-bottom:2px;}
  .mega-card .txt em{font-style:normal;font-size:12.5px;color:var(--muted);}

  /* 移动端抽屉 */
  .nav-toggle-input{display:none;}
  .nav-toggle{
    display:none;align-items:center;justify-content:center;
    width:42px;height:42px;border-radius:var(--radius-btn);
    border:1px solid var(--line);background:#fff;cursor:pointer;
    font-size:19px;color:var(--brand-deep);
  }
  .drawer{
    position:fixed;inset:0;z-index:70;
    background:#fff;padding:26px 22px 40px;
    transform:translateX(102%);
    transition:transform .24s ease;
    overflow-y:auto;
  }
  .nav-toggle-input:checked ~ .drawer{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px;}
  .drawer-close{
    width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
    border:1px solid var(--line);border-radius:var(--radius-btn);cursor:pointer;font-size:20px;
  }
  .drawer-group-title{
    font-size:12.5px;letter-spacing:1px;color:var(--muted);font-weight:700;
    margin:20px 0 8px;
  }
  .drawer-link{
    display:flex;align-items:center;justify-content:space-between;
    padding:14px 14px;border-radius:12px;font-size:16px;font-weight:600;
    border:1px solid var(--line);
  }
  .drawer-link + .drawer-link{margin-top:10px;}
  .drawer-link.active{background:var(--brand-soft);color:var(--brand-deep);border-color:#CDE0D9;}
  .drawer-link i{font-style:normal;color:var(--muted);}

  /* ---------- 面包屑 ---------- */
  .crumb-bar{padding:20px 0 0;}
  .breadcrumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:13.5px;color:var(--muted);
  }
  .breadcrumb a{color:var(--muted);transition:color .18s ease;}
  .breadcrumb a:hover{color:var(--brand);}
  .breadcrumb .sep{color:#B8C2BC;}
  .breadcrumb .current{color:var(--ink);font-weight:600;}

  /* ---------- 小号 Hero ---------- */
  .page-hero{padding:28px 0 0;}
  .hero-card{
    position:relative;
    background:var(--brand-deep);
    border-radius:22px;
    overflow:hidden;
    color:#fff;
    padding:52px 48px;
  }
  .hero-card::after{
    content:"";position:absolute;inset:0;
    background-image:url(/assets/images/backpic/back-1.webp);
    background-size:cover;background-position:center;
    opacity:.22;
    z-index:0;
  }
  .hero-inner{
    position:relative;z-index:1;
    display:grid;grid-template-columns:1.35fr .85fr;gap:44px;align-items:center;
  }
  .hero-tag{
    display:inline-flex;align-items:center;gap:8px;
    padding:6px 14px;border-radius:999px;
    background:rgba(255,255,255,.14);
    border:1px solid rgba(255,255,255,.22);
    font-size:13px;font-weight:600;letter-spacing:.4px;
    margin-bottom:18px;
  }
  .hero-tag b{color:var(--mint);font-family:var(--mono);}
  .page-hero h1{
    font-size:clamp(28px,3.6vw,44px);
    font-weight:800;
    line-height:1.24;
    margin-bottom:16px;
  }
  .page-hero h1 em{font-style:normal;color:var(--mint);}
  .hero-sub{
    font-size:16.5px;
    color:rgba(255,255,255,.82);
    max-width:56ch;
    margin-bottom:26px;
  }
  .hero-actions{display:flex;flex-wrap:wrap;gap:14px;}
  .hero-media{
    border-radius:16px;overflow:hidden;
    border:1px solid rgba(255,255,255,.2);
    background:rgba(255,255,255,.08);
  }
  .hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
  .hero-metrics{
    display:grid;gap:0;margin-top:16px;
    border:1px solid rgba(255,255,255,.2);border-radius:14px;overflow:hidden;
    background:rgba(255,255,255,.08);
  }
  .hero-metrics div{
    padding:12px 16px;
    display:flex;align-items:baseline;justify-content:space-between;gap:12px;
  }
  .hero-metrics div + div{border-top:1px solid rgba(255,255,255,.16);}
  .hero-metrics b{
    font-family:var(--mono);font-variant-numeric:tabular-nums;
    font-size:22px;color:#fff;
  }
  .hero-metrics span{font-size:13px;color:rgba(255,255,255,.78);}

  /* ---------- 通用板块 ---------- */
  .section{padding:96px 0;}
  .section-tight{padding:64px 0;}
  .section-head{max-width:760px;margin-bottom:40px;}
  .eyebrow{
    display:inline-flex;align-items:center;gap:8px;
    font-size:13px;font-weight:700;letter-spacing:1.4px;
    color:var(--brand);text-transform:uppercase;margin-bottom:12px;
  }
  .eyebrow::before{content:"";width:22px;height:2px;background:var(--accent);border-radius:2px;}
  .section-head h2{font-size:clamp(24px,2.6vw,32px);margin-bottom:14px;}
  .section-head p{color:var(--muted);font-size:16px;margin:0;}

  .lead{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);
    padding:36px 38px;
  }
  .lead p{font-size:17px;color:#2B3630;}
  .lead p:last-child{margin-bottom:0;}
  .lead strong{color:var(--brand-deep);}

  .trust-strip{
    display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
    margin-top:28px;
  }
  .trust-item{
    background:#fff;border:1px solid var(--line);border-radius:14px;
    padding:18px 20px;box-shadow:var(--shadow-card);
  }
  .trust-item b{
    display:block;font-size:19px;font-family:var(--mono);
    font-variant-numeric:tabular-nums;color:var(--brand-deep);margin-bottom:4px;
  }
  .trust-item span{font-size:13.5px;color:var(--muted);}

  /* ---------- 能力卡片网格 2×3 ---------- */
  .cap-grid{
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:24px;
  }
  .cap-card{
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    padding:28px 26px;
    box-shadow:var(--shadow-card);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    display:flex;flex-direction:column;
  }
  .cap-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:#D3DED8;}
  .cap-icon{
    width:46px;height:46px;border-radius:12px;
    display:inline-flex;align-items:center;justify-content:center;
    font-family:var(--mono);font-size:15px;font-weight:700;
    background:var(--brand-soft);color:var(--brand-deep);
    margin-bottom:16px;
  }
  .cap-card:nth-child(3n+2) .cap-icon{background:var(--accent-soft);color:#C64311;}
  .cap-card:nth-child(3n+3) .cap-icon{background:var(--mint-soft);color:#0E8C74;}
  .cap-card h3{font-size:19px;margin-bottom:10px;}
  .cap-card p{color:var(--muted);font-size:15px;margin:0;}
  .cap-foot{
    margin-top:auto;padding-top:18px;
    font-size:13.5px;color:var(--brand);font-weight:600;
  }

  /* ---------- 深色区块 ---------- */
  .dark-band{
    position:relative;
    background:var(--brand-deep);
    color:#fff;
    padding:88px 0;
    overflow:hidden;
  }
  .dark-band::before{
    content:"";position:absolute;inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),
      linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
    background-size:48px 48px;
    pointer-events:none;
  }
  .dark-inner{
    position:relative;z-index:1;
    display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;
  }
  .dark-band h2{font-size:clamp(23px,2.5vw,30px);margin-bottom:16px;}
  .dark-band p{color:rgba(255,255,255,.78);}
  .dark-list{margin-top:26px;}
  .dark-list li{
    display:flex;gap:14px;padding:16px 0;
    border-top:1px solid rgba(255,255,255,.14);
  }
  .dark-list li:last-child{border-bottom:1px solid rgba(255,255,255,.14);}
  .dark-list .num{
    font-family:var(--mono);font-size:13px;color:var(--mint);
    font-weight:700;padding-top:2px;
  }
  .dark-list strong{display:block;font-size:16px;margin-bottom:4px;}
  .dark-list span{font-size:14px;color:rgba(255,255,255,.72);}
  .dark-media{
    border-radius:18px;overflow:hidden;
    border:1px solid rgba(255,255,255,.16);
    box-shadow:0 24px 48px rgba(0,0,0,.24);
  }
  .dark-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}

  /* ---------- FAQ ---------- */
  .faq-list{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-card);overflow:hidden;
  }
  .faq-item + .faq-item{border-top:1px solid var(--line);}
  .faq-item summary{
    list-style:none;cursor:pointer;
    display:flex;align-items:center;gap:16px;
    padding:22px 26px;
    font-size:16.5px;font-weight:600;
    transition:background .18s ease,color .18s ease;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary:hover{background:#FAFBF9;color:var(--brand);}
  .faq-num{
    font-family:var(--mono);font-size:13px;color:var(--accent);font-weight:700;flex-shrink:0;
  }
  .faq-q{flex:1;}
  .faq-mark{
    flex-shrink:0;width:26px;height:26px;border-radius:50%;
    display:inline-flex;align-items:center;justify-content:center;
    background:var(--brand-soft);color:var(--brand-deep);
    font-size:15px;line-height:1;transition:transform .18s ease,background .18s ease;
  }
  .faq-item[open] .faq-mark{background:var(--accent);color:#fff;transform:rotate(135deg);}
  .faq-a{
    padding:0 26px 24px 60px;
    color:var(--muted);font-size:15.5px;
  }
  .faq-a p{margin:0;}

  /* ---------- CTA 表单 ---------- */
  .cta-card{
    background:#fff;border:1px solid var(--line);
    border-radius:22px;box-shadow:var(--shadow-card);
    padding:46px;
    display:grid;grid-template-columns:1fr 1fr;gap:48px;
  }
  .cta-copy h2{font-size:clamp(23px,2.4vw,30px);margin-bottom:14px;}
  .cta-copy p{color:var(--muted);}
  .cta-points{margin-top:20px;}
  .cta-points li{
    display:flex;gap:10px;align-items:flex-start;
    font-size:15px;color:#2B3630;padding:7px 0;
  }
  .cta-points li::before{
    content:"";width:16px;height:16px;border-radius:50%;
    border:2px solid var(--mint);margin-top:5px;flex-shrink:0;
  }
  .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
  .field{display:flex;flex-direction:column;gap:7px;}
  .field.full{grid-column:1/-1;}
  .field label{font-size:13.5px;font-weight:600;color:#2B3630;}
  .field input,.field select,.field textarea{
    border:1px solid var(--line);border-radius:var(--radius-btn);
    background:#fff;padding:12px 14px;font-size:15px;
    transition:border-color .18s ease,box-shadow .18s ease,background .18s ease;
  }
  .field textarea{min-height:112px;resize:vertical;}
  .field input::placeholder,.field textarea::placeholder{color:#9DA8A2;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;border-color:var(--brand);
    box-shadow:0 0 0 3px rgba(11,93,78,.12);
    background:#F7FBF9;
  }
  .form-note{font-size:13px;color:var(--muted);margin-top:14px;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    background:var(--brand-deep);
    color:rgba(255,255,255,.78);
    padding:72px 0 28px;
  }
  .footer-grid{
    display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1fr;gap:44px;
  }
  .footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
  .footer-brand .brand-mark{border-bottom:3px solid var(--accent);}
  .footer-brand strong{display:block;color:#fff;font-size:16.5px;}
  .footer-brand em{font-style:normal;font-size:12.5px;color:rgba(255,255,255,.62);}
  .footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.7);margin:0;}
  .footer-col h4{
    color:#fff;font-size:15px;margin-bottom:16px;
    padding-bottom:10px;border-bottom:1px solid rgba(255,255,255,.14);
  }
  .footer-col ul li + li{margin-top:8px;}
  .footer-col a,.footer-col address{
    font-size:14.5px;color:rgba(255,255,255,.72);line-height:1.9;
    transition:color .18s ease;
  }
  .footer-col a:hover{color:var(--accent);}
  .footer-bottom{
    margin-top:48px;padding-top:20px;
    border-top:1px solid rgba(255,255,255,.14);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:rgba(255,255,255,.58);
  }

  /* ---------- 响应式 ---------- */
  @media (max-width:1200px){
    .container{padding:0 26px;}
  }
  @media (max-width:1024px){
    .main-nav{display:none;}
    .nav-toggle{display:inline-flex;}
    .header-inner{min-height:66px;gap:16px;}
    .header-cta{display:none;}
    .hero-inner{grid-template-columns:1fr;gap:32px;}
    .hero-card{padding:40px 30px;}
    .cap-grid{grid-template-columns:repeat(2,1fr);}
    .trust-strip{grid-template-columns:repeat(2,1fr);}
    .dark-inner{grid-template-columns:1fr;gap:34px;}
    .cta-card{grid-template-columns:1fr;gap:34px;padding:34px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
    .section{padding:72px 0;}
    .mega-wrap{display:none;}
  }
  @media (max-width:640px){
    body{font-size:16px;}
    .container{padding:0 20px;}
    .section{padding:56px 0;}
    .dark-band{padding:56px 0;}
    .hero-card{padding:32px 22px;border-radius:18px;}
    .cap-grid{grid-template-columns:1fr;}
    .trust-strip{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr;}
    .form-grid{grid-template-columns:1fr;}
    .lead{padding:26px 22px;}
    .cta-card{padding:26px 22px;}
    .faq-item summary{padding:18px 18px;font-size:15.5px;}
    .faq-a{padding:0 18px 20px 48px;}
    .footer-bottom{flex-direction:column;}
  }

/* roulang page: category3 */
:root{
  --brand:#0B5D4E;
  --brand-deep:#073B33;
  --brand-soft:#E8F2EF;
  --accent:#FF5A1F;
  --accent-soft:#FFEDE5;
  --cyan:#23D2B0;
  --cyan-soft:#E4FAF5;
  --bg:#F6F7F4;
  --card:#FFFFFF;
  --text:#111814;
  --muted:#55605A;
  --line:#E4E8E2;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-card:0 1px 2px rgba(11,21,18,.06), 0 8px 24px rgba(11,21,18,.06);
  --shadow-lift:0 14px 32px rgba(11,21,18,.10);
  --section:96px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  font-size:16.5px;line-height:1.8;letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:-.01em}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:var(--section) 0}
.section-tight{padding:72px 0}
.num{font-family:"JetBrains Mono",ui-monospace,SFMono-Regular,Consolas,monospace;font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 20px rgba(11,21,18,.08)}
.header-inner{display:flex;align-items:center;gap:24px;height:76px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:42px;height:42px;border-radius:12px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:"JetBrains Mono",ui-monospace,monospace;font-weight:700;font-size:16px;letter-spacing:.04em;
  box-shadow:0 6px 16px rgba(11,93,78,.28);
}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-text strong{font-size:17px;font-weight:700;color:var(--brand-deep)}
.brand-text em{font-style:normal;font-size:12.5px;color:var(--muted);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-link{
  position:relative;padding:9px 14px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:500;color:var(--muted);
  transition:color .2s ease,background-color .2s ease,transform .2s ease;
}
.nav-link:hover{color:var(--brand-deep);background:var(--brand-soft)}
.nav-link.active{color:var(--brand-deep);font-weight:700;background:var(--brand-soft)}
.nav-link.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-actions{position:relative;flex:0 0 auto}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 14px;border-radius:var(--radius-btn);
  border:1px solid var(--line);background:#fff;color:var(--brand-deep);
  font-size:14.5px;font-weight:600;
  transition:border-color .2s ease,background-color .2s ease,transform .2s ease;
}
.mega-trigger:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-1px)}
.mega-trigger svg{width:14px;height:14px}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:640px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:0 20px 46px rgba(7,59,51,.16);padding:24px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
  z-index:90;
}
.mega-panel::before{
  content:"";position:absolute;top:-3px;left:0;right:0;height:3px;
  background:var(--brand);border-radius:var(--radius-card) var(--radius-card) 0 0;
}
.nav-actions:hover .mega-panel,.nav-actions:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.mega-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin-bottom:12px}
.mega-list li + li{margin-top:2px}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:8px 10px;border-radius:9px;font-size:14.5px;color:var(--text);
  transition:background-color .2s ease,color .2s ease,transform .2s ease;
}
.mega-list a:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateX(3px)}
.mega-list a span{font-size:12.5px;color:var(--muted)}
.mega-cards{display:grid;gap:12px}
.mega-card{
  display:block;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mega-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:#D6DED8}
.mega-card .thumb{aspect-ratio:16/9;background:#E9EDE8;overflow:hidden}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease}
.mega-card:hover .thumb img{transform:scale(1.03)}
.mega-card .meta{padding:10px 12px 12px}
.mega-card .meta strong{display:block;font-size:14.5px;color:var(--brand-deep)}
.mega-card .meta em{font-style:normal;font-size:12.5px;color:var(--muted)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;margin-left:auto;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand-deep);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--brand-deep);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

.drawer{
  position:fixed;inset:0;background:#fff;z-index:120;
  transform:translateX(100%);transition:transform .26s ease;
  display:flex;flex-direction:column;padding:24px;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#fff;
  font-size:20px;line-height:1;color:var(--brand-deep);
}
.drawer-group-title{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.08em;margin:18px 0 8px}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 14px;border:1px solid var(--line);border-radius:12px;
  font-size:16px;font-weight:500;color:var(--brand-deep);margin-bottom:10px;
  transition:background-color .2s ease,border-color .2s ease;
}
.drawer-link:hover,.drawer-link.active{background:var(--brand-soft);border-color:#CFE0DA}
.drawer-link i{font-style:normal;color:var(--accent)}

/* ---------- hero ---------- */
.page-hero{position:relative;overflow:hidden;background:var(--brand-deep)}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  filter:saturate(1.05);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(7,59,51,.90) 0%,rgba(7,59,51,.78) 48%,rgba(7,59,51,.66) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;padding:64px 0 72px}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.72);margin-bottom:22px}
.breadcrumb a{color:rgba(255,255,255,.86);transition:color .2s ease}
.breadcrumb a:hover{color:var(--accent)}
.hero-tag{
  display:inline-block;padding:6px 14px;border-radius:999px;
  background:rgba(255,90,31,.16);color:#FFC7B0;border:1px solid rgba(255,90,31,.38);
  font-size:13px;font-weight:600;letter-spacing:.04em;margin-bottom:18px;
}
.page-hero h1{
  color:#fff;font-size:clamp(28px,3.6vw,44px);font-weight:800;line-height:1.28;margin-bottom:16px;
}
.hero-sub{color:rgba(255,255,255,.82);font-size:17px;max-width:34em;margin-bottom:28px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:34px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15.5px;font-weight:600;white-space:nowrap;
  transition:transform .2s ease,background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 22px rgba(255,90,31,.28)}
.btn-accent:hover{background:#E84E16;transform:translateY(-2px)}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.34)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.6);transform:translateY(-2px)}
.btn-brand{background:var(--brand);color:#fff}
.btn-brand:hover{background:#0A5145;transform:translateY(-2px)}
.btn-light{background:#fff;color:var(--brand-deep);border-color:var(--line)}
.btn-light:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px)}
.hero-metrics{display:flex;flex-wrap:wrap;gap:0;border-top:1px solid rgba(255,255,255,.18);padding-top:20px}
.hero-metrics li{padding:0 24px;border-left:1px solid rgba(255,255,255,.18)}
.hero-metrics li:first-child{padding-left:0;border-left:0}
.hero-metrics strong{display:block;font-size:26px;font-weight:700;color:#fff}
.hero-metrics span{font-size:13.5px;color:rgba(255,255,255,.68)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius-card);
  border:1px solid rgba(255,255,255,.18);background:#0A4C41;
}
.hero-media-badge{
  position:absolute;left:18px;bottom:18px;
  background:rgba(255,255,255,.94);color:var(--brand-deep);
  padding:9px 16px;border-radius:999px;font-size:13.5px;font-weight:600;
  box-shadow:0 10px 26px rgba(0,0,0,.18);
}
.hero-media-badge b{color:var(--accent);font-weight:700}

/* ---------- generic blocks ---------- */
.eyebrow{
  display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;
  color:var(--accent);margin-bottom:14px;
}
.eyebrow-light{color:#FFC0A6}
.section-head{max-width:760px;margin-bottom:44px}
.section-head h2{font-size:clamp(24px,2.6vw,32px);font-weight:700;color:var(--brand-deep);margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16.5px}
.lead-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:48px;align-items:start}
.lead-copy p{color:var(--muted);font-size:16.5px}
.lead-points{display:grid;gap:14px}
.lead-point{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 20px;box-shadow:var(--shadow-card);
}
.lead-point strong{display:block;font-size:15.5px;color:var(--brand-deep);margin-bottom:4px}
.lead-point span{font-size:14px;color:var(--muted)}

/* ---------- table ---------- */
.table-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border-radius:var(--radius-card);box-shadow:var(--shadow-card);background:#fff;
}
.spec-table{width:100%;min-width:820px;border-collapse:separate;border-spacing:0}
.spec-table thead th{
  background:var(--brand-deep);color:#fff;text-align:left;font-size:15px;font-weight:600;
  padding:0 22px;height:58px;letter-spacing:.02em;
}
.spec-table thead th:first-child{border-radius:var(--radius-card) 0 0 0}
.spec-table thead th:last-child{border-radius:0 var(--radius-card) 0 0}
.spec-table tbody td{
  height:48px;padding:13px 22px;font-size:15px;color:var(--muted);
  border-bottom:1px solid var(--line);vertical-align:middle;
}
.spec-table tbody tr:nth-child(even){background:#F9FAF8}
.spec-table tbody tr:last-child td{border-bottom:0}
.spec-table tbody td:first-child{color:var(--text);font-weight:600;width:20%}
.spec-table tbody td.mark{color:var(--brand);font-weight:600}
.cell-flag{display:inline-flex;align-items:center;gap:8px}
.dot{width:8px;height:8px;border-radius:50%;flex:0 0 auto}
.dot-cyan{background:var(--cyan)}
.dot-accent{background:var(--accent)}
.dot-gray{background:#C3CCC6}
.table-note{margin-top:16px;font-size:13.5px;color:var(--muted)}

/* ---------- dark metrics ---------- */
.dark-section{
  background:var(--brand-deep);color:#fff;position:relative;overflow:hidden;
}
.dark-section::before{
  content:"";position:absolute;inset:0;
  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:48px 48px;opacity:.7;
}
.dark-section .container{position:relative;z-index:2}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.metric-card{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:var(--radius-card);padding:26px 24px;position:relative;
  transition:transform .22s ease,background-color .22s ease;
}
.metric-card::before{
  content:"";position:absolute;top:0;left:24px;right:24px;height:2px;background:var(--cyan);border-radius:2px;
}
.metric-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.10)}
.metric-card .value{font-size:42px;font-weight:700;color:#fff;line-height:1.1;margin-bottom:6px}
.metric-card .value small{font-size:16px;font-weight:600;margin-left:4px;color:var(--cyan)}
.metric-card .label{font-size:14px;color:rgba(255,255,255,.7)}
.dark-section .section-head h2{color:#fff}
.dark-section .section-head p{color:rgba(255,255,255,.72)}

/* ---------- faq ---------- */
.faq-wrap{display:grid;grid-template-columns:.85fr 1.15fr;gap:52px;align-items:start}
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-card);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;gap:16px;padding:20px 24px;cursor:pointer;list-style:none;
  transition:background-color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#F5F8F6}
.faq-num{font-family:"JetBrains Mono",ui-monospace,monospace;font-size:14px;font-weight:700;color:var(--accent);flex:0 0 auto}
.faq-q{flex:1;font-size:16px;font-weight:600;color:var(--brand-deep)}
.faq-icon{position:relative;width:16px;height:16px;flex:0 0 auto}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .18s ease,opacity .18s ease;
}
.faq-icon::before{top:7px;left:0;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{padding:0 24px 22px 62px;color:var(--muted);font-size:15.5px}

/* ---------- cta form ---------- */
.cta-section{background:var(--brand-deep);color:#fff;position:relative;overflow:hidden}
.cta-section::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(255,255,255,.045) 0 2px,transparent 2px 12px);
}
.cta-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.cta-copy h2{color:#fff;font-size:clamp(23px,2.5vw,30px);font-weight:700;margin-bottom:16px}
.cta-copy p{color:rgba(255,255,255,.76)}
.cta-points{margin-top:26px;display:grid;gap:12px}
.cta-points li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:rgba(255,255,255,.86)}
.cta-points li::before{
  content:"";flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--cyan);margin-top:9px;
}
.cta-form{
  background:#fff;border-radius:var(--radius-card);padding:30px;box-shadow:0 22px 50px rgba(0,0,0,.22);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:600;color:var(--brand-deep)}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#FCFDFC;font-size:15px;color:var(--text);
  transition:border-color .2s ease,background-color .2s ease,box-shadow .2s ease;
}
.field textarea{resize:vertical;min-height:110px;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);background:var(--brand-soft);
  box-shadow:0 0 0 3px rgba(11,93,78,.12);
}
.field input::placeholder,.field textarea::placeholder{color:#9AA5A0}
.cta-form .btn{width:100%;margin-top:18px}
.form-hint{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.7}
.form-status{margin-top:12px;font-size:13.5px;color:var(--brand);font-weight:600;display:none}
.form-status.show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.76);padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.1fr 1fr;gap:40px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--accent);box-shadow:none}
.footer-brand strong{display:block;color:#fff;font-size:17px}
.footer-brand em{font-style:normal;font-size:13px;color:rgba(255,255,255,.62)}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:34em}
.footer-col h4{color:#fff;font-size:15px;font-weight:700;margin-bottom:18px}
.footer-col ul li + li{margin-top:10px}
.footer-col a{font-size:14.5px;transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-col address{font-style:normal;font-size:14.5px;line-height:2;color:rgba(255,255,255,.66)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  font-size:13.5px;color:rgba(255,255,255,.58);
}

/* ---------- responsive ---------- */
@media (max-width:1180px){
  .mega-panel{width:560px}
}
@media (max-width:1024px){
  :root{--section:72px}
  .main-nav,.nav-actions{display:none}
  .nav-toggle{display:flex}
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:48px 0 56px}
  .hero-media{order:2}
  .lead-grid{grid-template-columns:1fr;gap:32px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .cta-grid{grid-template-columns:1fr;gap:36px}
  .metric-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:640px){
  :root{--section:56px}
  .container{padding:0 20px}
  .header-inner{height:68px}
  .brand-text em{display:none}
  .page-hero h1{font-size:28px}
  .hero-metrics li{padding:0 16px}
  .hero-metrics li:first-child{padding-left:0}
  .hero-metrics strong{font-size:22px}
  .metric-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .faq-a{padding:0 20px 20px 20px}
  .cta-form{padding:22px}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
}

/* roulang page: category4 */
:root{
  --brand:#0B5D4E;
  --brand-deep:#073B33;
  --accent:#FF5A1F;
  --teal:#23D2B0;
  --bg:#F6F7F4;
  --card:#FFFFFF;
  --text:#111814;
  --muted:#55605A;
  --line:#E4E8E2;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-1:0 1px 2px rgba(11,21,18,.06);
  --shadow-2:0 8px 24px rgba(11,21,18,.06);
  --shadow-3:0 14px 32px rgba(11,21,18,.12);
  --section:96px;
  --mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.num{font-family:var(--mono);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:4px}

/* ---------- 容器 ---------- */
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
@media (min-width:1280px){.container{max-width:1280px}}
@media (max-width:640px){.container{padding:0 20px}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow .22s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-2)}
.header-inner{display:flex;align-items:center;gap:18px;height:74px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--brand-deep);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:15px;letter-spacing:.5px;
  flex:0 0 auto;
}
.logo-text strong{display:block;font-size:16px;font-weight:800;line-height:1.2}
.logo-text em{display:block;font-style:normal;font-size:11.5px;color:var(--muted);letter-spacing:.4px;line-height:1.4}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:10px;flex:1 1 auto}
.nav-link{
  display:inline-block;padding:9px 13px;border-radius:9px;font-size:15px;color:var(--muted);
  transition:color .2s ease,background-color .2s ease;white-space:nowrap;
}
.nav-link:hover{color:var(--brand);background:#F0F5F2}
.nav-link.active{color:var(--brand);font-weight:700;background:#E9F2EF}
.nav-link:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.mega{position:relative;margin-left:auto;flex:0 0 auto}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;padding:10px 17px;
  border:1px solid var(--line);border-radius:var(--radius-btn);background:#fff;
  font-size:14.5px;font-weight:600;color:var(--brand);cursor:pointer;
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.mega:hover .mega-trigger,.mega:focus-within .mega-trigger{
  border-color:var(--brand);box-shadow:var(--shadow-2);transform:translateY(-1px);
}
.mega-trigger .caret{
  width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid var(--brand);transition:transform .18s ease;
}
.mega:hover .caret{transform:rotate(180deg)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:660px;
  background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow-3);
  padding:26px 26px 24px;display:grid;grid-template-columns:1fr 1.15fr;gap:26px;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s ease;
}
.mega-panel::before{
  content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--brand);
  border-radius:16px 16px 0 0;
}
.mega:hover .mega-panel,.mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-title{font-size:12.5px;font-weight:700;letter-spacing:1.4px;color:var(--muted);margin-bottom:12px}
.mega-list li + li{margin-top:2px}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 11px;border-radius:9px;font-size:14.5px;color:var(--text);
  transition:background-color .2s ease,color .2s ease;
}
.mega-list a:hover{background:#F2F7F4;color:var(--brand)}
.mega-list a span.arrow{color:var(--accent);font-size:13px}
.mega-cards{display:grid;gap:12px}
.mega-card{
  display:flex;gap:12px;align-items:center;padding:11px;border:1px solid var(--line);
  border-radius:12px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.mega-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0D9}
.mega-card .thumb{width:76px;height:52px;border-radius:9px;overflow:hidden;background:#E9EFEA;flex:0 0 auto}
.mega-card .thumb img{width:100%;height:100%;object-fit:cover}
.mega-card .txt strong{display:block;font-size:14px;font-weight:700;line-height:1.4}
.mega-card .txt em{display:block;font-style:normal;font-size:12.5px;color:var(--muted);line-height:1.5}
.nav-toggle{
  display:none;align-items:center;justify-content:center;width:42px;height:42px;
  border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;
  flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px}
.drawer{
  position:fixed;inset:0;background:#fff;z-index:100;padding:26px 22px;
  transform:translateX(100%);transition:transform .24s ease;overflow-y:auto;
}
#navToggle:checked ~ .drawer{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:40px;height:40px;border:1px solid var(--line);border-radius:10px;background:#fff;
  display:grid;place-items:center;cursor:pointer;color:var(--brand);font-size:18px;font-weight:700;
}
.drawer-group{margin-bottom:22px}
.drawer-group h3{font-size:12.5px;letter-spacing:1.4px;color:var(--muted);margin-bottom:10px;font-weight:700}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 14px;border:1px solid var(--line);border-radius:12px;margin-bottom:8px;
  font-size:15.5px;font-weight:600;transition:background-color .2s ease,border-color .2s ease;
}
.drawer-link:hover,.drawer-link.active{background:#F2F7F4;border-color:#BFD9CF;color:var(--brand)}
.drawer-link .arrow{color:var(--accent)}
@media (max-width:1024px){
  .main-nav{display:none}
  .mega{display:none}
  .nav-toggle{display:flex;margin-left:auto}
}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13.5px;color:rgba(255,255,255,.7);margin-bottom:22px;
}
.crumb a{color:rgba(255,255,255,.86);transition:color .2s ease}
.crumb a:hover{color:var(--teal)}
.crumb .sep{color:rgba(255,255,255,.4)}
.crumb .current{color:#fff;font-weight:600}

/* ---------- 分类 Hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--brand-deep);color:#fff}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.5;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(7,59,51,.94) 0%,rgba(7,59,51,.86) 46%,rgba(11,93,78,.72) 100%);
}
.cat-hero .container{position:relative;z-index:2}
.hero-pad{padding:56px 0 76px}
.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:56px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:9px;padding:6px 14px;border-radius:999px;
  background:rgba(35,210,176,.16);border:1px solid rgba(35,210,176,.42);
  color:var(--teal);font-size:13px;font-weight:700;letter-spacing:.6px;margin-bottom:20px;
}
.hero-badge i{width:6px;height:6px;border-radius:50%;background:var(--teal);display:block}
.cat-hero h1{
  font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.22;letter-spacing:-.4px;
  margin-bottom:18px;
}
.cat-hero h1 .hl{color:var(--teal)}
.hero-sub{font-size:17px;line-height:1.85;color:rgba(255,255,255,.82);max-width:560px;margin-bottom:24px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 22px;margin-bottom:30px}
.hero-points li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:rgba(255,255,255,.86)}
.hero-points li::before{
  content:"";width:15px;height:15px;flex:0 0 auto;border-radius:50%;
  background:rgba(35,210,176,.2);border:1px solid rgba(35,210,176,.6);
  background-image:linear-gradient(transparent,transparent);
  position:relative;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px}
.hero-media{border-radius:18px;overflow:hidden;border:1px solid rgba(255,255,255,.16);background:#0A3B33;box-shadow:0 20px 44px rgba(0,0,0,.28)}
.hero-media .frame{position:relative;aspect-ratio:4/3;background:#0A3B33}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media .caption{
  padding:14px 18px;background:rgba(7,59,51,.92);border-top:1px solid rgba(255,255,255,.12);
  font-size:13.5px;color:rgba(255,255,255,.76);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:var(--radius-btn);font-size:15.5px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:#E64D14;transform:translateY(-2px);box-shadow:0 12px 24px rgba(255,90,31,.3)}
.btn-outline{background:#fff;color:var(--text);border-color:var(--line)}
.btn-outline:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.44)}
.btn-light:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.btn-block{width:100%}

/* ---------- 板块 ---------- */
.section{padding:var(--section) 0}
.section--tight{padding:72px 0}
.section--soft{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:760px;margin-bottom:46px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;font-size:12.5px;font-weight:700;
  letter-spacing:1.8px;color:var(--brand);margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}
.section-head h2{font-size:clamp(24px,3vw,32px);font-weight:700;line-height:1.32;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16px;line-height:1.85}

/* ---------- 导语 ---------- */
.intro{padding:64px 0 0}
.intro-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-1);padding:32px 34px;
  display:grid;grid-template-columns:1.6fr 1fr;gap:36px;align-items:center;
}
.intro-card p{font-size:16.5px;line-height:1.9;color:var(--muted)}
.intro-card p + p{margin-top:12px}
.intro-card strong{color:var(--text)}
.intro-metrics{display:grid;gap:12px;border-left:1px solid var(--line);padding-left:30px}
.metric-row{display:flex;align-items:baseline;gap:10px}
.metric-row .v{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:30px;font-weight:800;color:var(--brand);line-height:1.1}
.metric-row .v em{font-style:normal;font-size:15px;font-weight:600;margin-left:2px}
.metric-row .k{font-size:13.5px;color:var(--muted)}

/* ---------- Z 字图文流 ---------- */
.zig-list{display:grid;gap:88px}
.zig{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.zig.flip .zig-media{order:2}
.zig.flip .zig-body{order:1}
.zig-media{position:relative;border-radius:18px;overflow:hidden;background:#E9EFEA;border:1px solid var(--line);box-shadow:var(--shadow-2)}
.zig-media .frame{position:relative;aspect-ratio:16/10;background:#E9EFEA}
.zig-media img{width:100%;height:100%;object-fit:cover;transition:transform .24s ease}
.zig-media:hover img{transform:scale(1.03)}
.zig-media .tag{
  position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:999px;
  background:rgba(7,59,51,.88);color:#fff;font-size:12.5px;font-weight:700;letter-spacing:.4px;
}
.zig-index{
  font-family:var(--mono);font-variant-numeric:tabular-nums;
  font-size:15px;font-weight:800;color:var(--accent);letter-spacing:1px;
  display:flex;align-items:center;gap:12px;margin-bottom:14px;
}
.zig-index::after{content:"";flex:1;height:1px;background:var(--line)}
.zig-body h3{font-size:22px;font-weight:700;margin-bottom:14px;line-height:1.4}
.zig-body > p{color:var(--muted);font-size:16px;line-height:1.9;margin-bottom:18px}
.check-list{display:grid;gap:11px}
.check-list li{display:flex;align-items:flex-start;gap:11px;font-size:15.5px;color:var(--text)}
.check-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:6px;
  background:#E7F6F1;border:1px solid #B9E6D9;position:relative;
}
.check-list li::after{
  content:"";position:absolute;
}
.check-list li span{position:relative}
.check-list li span::before{
  content:"";position:absolute;
}
.zig-note{
  margin-top:18px;padding:13px 16px;border-left:3px solid var(--teal);
  background:#F1F8F5;border-radius:0 10px 10px 0;font-size:14px;color:var(--muted);
}
@media (max-width:900px){
  .zig{grid-template-columns:1fr;gap:26px}
  .zig.flip .zig-media{order:0}
  .zig-list{gap:60px}
}

/* ---------- 深色数据条 ---------- */
.stat-band{position:relative;background:var(--brand-deep);color:#fff;padding:70px 0;overflow:hidden}
.stat-band::before{
  content:"";position:absolute;inset:0;opacity:.09;
  background-image:linear-gradient(rgba(255,255,255,.5) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:56px 56px;
}
.stat-band .container{position:relative;z-index:2}
.stat-band-head{max-width:700px;margin-bottom:42px}
.stat-band-head h2{font-size:clamp(24px,3vw,31px);margin-bottom:12px;color:#fff}
.stat-band-head p{color:rgba(255,255,255,.7);font-size:15.5px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.stat-item{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:14px;padding:24px 22px;transition:transform .2s ease,background-color .2s ease;
}
.stat-item:hover{transform:translateY(-3px);background:rgba(255,255,255,.1)}
.stat-item .v{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:40px;font-weight:800;line-height:1.1;color:#fff}
.stat-item .v em{font-style:normal;font-size:16px;font-weight:600;margin-left:3px;color:var(--teal)}
.stat-item .k{font-size:13.5px;color:rgba(255,255,255,.66);margin-top:8px}

/* ---------- 信任条 ---------- */
.trust-strip{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0}
.trust-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}
.trust-inner .label{font-size:13.5px;color:var(--muted);font-weight:600}
.trust-tags{display:flex;flex-wrap:wrap;gap:10px}
.trust-tags span{
  padding:8px 16px;border-radius:999px;background:#F2F7F4;border:1px solid #DCEAE3;
  font-size:14px;color:var(--brand);font-weight:600;
}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:900px}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:first-child{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:flex-start;gap:16px;padding:22px 0;cursor:pointer;list-style:none;
  font-size:17px;font-weight:600;line-height:1.6;transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--brand)}
.faq-num{font-family:var(--mono);font-variant-numeric:tabular-nums;font-size:14px;font-weight:800;color:var(--accent);padding-top:4px;flex:0 0 auto}
.faq-icon{
  margin-left:auto;position:relative;width:22px;height:22px;flex:0 0 auto;margin-top:4px;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .18s ease,opacity .18s ease;
}
.faq-icon::before{left:0;top:10px;width:22px;height:2px}
.faq-icon::after{left:10px;top:0;width:2px;height:22px}
.faq-item[open] .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-item[open] .faq-icon{transform:rotate(180deg)}
.faq-answer{padding:0 0 24px 44px;color:var(--muted);font-size:15.5px;line-height:1.9}

/* ---------- CTA ---------- */
.cta-band{padding:0 0 var(--section)}
.cta-card{
  position:relative;overflow:hidden;border-radius:20px;background:var(--brand-deep);color:#fff;
  padding:52px 54px;display:grid;grid-template-columns:1.35fr .8fr;gap:40px;align-items:center;
}
.cta-card::before{
  content:"";position:absolute;inset:0;opacity:.35;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.cta-card::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(7,59,51,.95) 0%,rgba(7,59,51,.84) 55%,rgba(11,93,78,.7) 100%);
}
.cta-card > *{position:relative;z-index:2}
.cta-card h2{font-size:clamp(23px,2.8vw,30px);margin-bottom:14px}
.cta-card p{color:rgba(255,255,255,.78);font-size:15.5px;line-height:1.85}
.cta-actions{display:flex;flex-direction:column;gap:12px}
.cta-meta{font-size:13px;color:rgba(255,255,255,.62);line-height:1.7}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.76);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:42px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-brand .brand-mark{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.18)}
.footer-brand strong{display:block;font-size:16px;color:#fff;line-height:1.25}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:rgba(255,255,255,.6);letter-spacing:.4px}
.footer-desc{font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:420px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;font-weight:700}
.footer-col ul li + li{margin-top:10px}
.footer-col a{font-size:14.5px;color:rgba(255,255,255,.72);transition:color .2s ease}
.footer-col a:hover{color:var(--accent)}
.footer-col address{font-style:normal;font-size:14.5px;line-height:2;color:rgba(255,255,255,.72)}
.footer-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.12);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.58);
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:34px}
  .intro-card{grid-template-columns:1fr;padding:26px 24px}
  .intro-metrics{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:20px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .cta-card{grid-template-columns:1fr;padding:40px 30px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:640px){
  :root{--section:56px}
  .section--tight{padding:52px 0}
  .hero-pad{padding:34px 0 52px}
  .cat-hero h1{font-size:29px}
  .intro{padding:44px 0 0}
  .stat-grid{grid-template-columns:1fr}
  .faq-answer{padding-left:0}
  .footer-grid{grid-template-columns:1fr}
  .cta-card{padding:32px 22px}
  .zig-list{gap:48px}
}