/* roulang page: index */
:root{
  --brand:#1F4A3D;
  --brand-deep:#12332B;
  --brand-soft:#E7EDE8;
  --accent:#C2703B;
  --accent-soft:#F3E2D6;
  --accent-dark:#A85C2C;
  --bg:#F6F4EE;
  --bg-2:#EFEDE4;
  --card:#FFFFFF;
  --ink:#1A1F1C;
  --ink-2:#5A6660;
  --ink-3:#8A938D;
  --line:#E2DED3;
  --c-teal:#2E8C7A;
  --c-amber:#E8B04B;
  --c-brick:#B4553C;
  --c-graphite:#4A5A54;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow:0 1px 2px rgba(18,51,43,.06),0 10px 28px -18px rgba(18,51,43,.28);
  --shadow-hover:0 2px 4px rgba(18,51,43,.08),0 18px 34px -18px rgba(18,51,43,.34);
  --font-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Helvetica Neue",Arial,sans-serif;
  --font-num:ui-monospace,"SF Mono","DIN Alternate","Roboto Mono",Menlo,Consolas,monospace;
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--accent)}
h1,h2,h3,h4,h5{margin:0;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,select,textarea{font-family:inherit;font-size:15px;color:var(--ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(246,244,238,.94);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 18px -10px rgba(18,51,43,.28)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.logo{display:flex;align-items:center;gap:10px;color:var(--brand)}
.logo:hover{color:var(--brand)}
.logo-mark{
  position:relative;width:32px;height:32px;flex:0 0 32px;
  background:var(--brand);
  clip-path:polygon(50% 0%,93% 25%,93% 75%,50% 100%,7% 75%,7% 25%);
  display:flex;align-items:center;justify-content:center;
}
.logo-mark i{display:block;width:12px;height:12px;border:1.5px solid rgba(255,255,255,.85);border-radius:2px;position:relative}
.logo-mark i::after{content:"";position:absolute;left:50%;top:-4px;bottom:-4px;width:1px;background:rgba(255,255,255,.6);transform:translateX(-50%)}
.logo-text{display:flex;align-items:baseline;gap:6px;line-height:1;white-space:nowrap}
.logo-text strong{font-size:19px;letter-spacing:-.02em}
.logo-text em{font-style:normal;font-size:12px;color:var(--ink-2);letter-spacing:.02em}
.main-nav{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;
  display:inline-flex;align-items:center;
  padding:12px 14px;height:44px;
  font-size:15px;color:var(--ink-2);border-radius:8px;
  transition:background .16s ease-out,color .16s ease-out;
}
.nav-link:hover{background:var(--bg-2);color:var(--brand)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;bottom:5px;width:calc(60% - 6px);height:2px;background:var(--accent);border-radius:2px;
}
.nav-sep{width:1px;height:22px;background:var(--line);margin:0 10px}
.nav-drawer-foot{display:none}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:8px;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border:1px solid var(--line);background:var(--card);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
body.nav-open .nav-toggle span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .nav-toggle span:nth-child(2){opacity:0}
body.nav-open .nav-toggle span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;white-space:nowrap;
  transition:background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out,border-color .18s ease-out;
}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 8px 18px -12px rgba(194,112,59,.9)}
.btn-primary:hover{background:var(--accent-dark);color:#fff;transform:translateY(-1px);box-shadow:0 12px 22px -12px rgba(168,92,44,.9)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{border:1px solid var(--brand);color:var(--brand);background:transparent}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand);transform:translateY(-1px)}
.btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.1);color:#fff}
.btn-sm{height:36px;padding:0 14px;font-size:14px;border-radius:8px}
.btn-block{width:100%}
.btn[disabled],.btn.is-loading{opacity:.4;pointer-events:none;transform:none}

/* ---------- badges & tags ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--radius-badge);
  font-size:12px;line-height:1.5;font-weight:600;
  background:var(--brand-soft);color:var(--brand);
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.badge-accent{background:var(--accent-soft);color:var(--accent-dark)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ---------- hero ---------- */
.hero{padding:72px 0 0;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 82% 18%, rgba(31,74,61,.10), transparent 42%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;padding-bottom:64px}
.hero h1{font-size:clamp(30px,4vw,50px);line-height:1.18;letter-spacing:-.02em;margin:20px 0 18px}
.hero h1 .hl{color:var(--brand);display:block}
.hero-sub{font-size:17px;line-height:1.8;color:var(--ink-2);max-width:560px}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-trust{display:flex;flex-wrap:wrap;gap:26px;margin-top:36px;padding-top:22px;border-top:1px solid var(--line)}
.hero-trust div{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.hero-trust .idx{font-family:var(--font-num);font-size:12px;color:var(--accent);font-weight:700;letter-spacing:.04em}

.hero-board{
  position:relative;border-radius:var(--radius-card);overflow:hidden;
  min-height:440px;padding:26px;
  background:var(--brand-deep) url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  box-shadow:0 0 0 8px rgba(18,51,43,.08),var(--shadow);
  display:flex;flex-direction:column;
}
.hero-board::before{content:"";position:absolute;inset:0;background:rgba(18,51,43,.78)}
.hero-board > *{position:relative;z-index:1}
.board-head{display:flex;align-items:center;justify-content:space-between;color:rgba(255,255,255,.72);font-size:12px;letter-spacing:.06em}
.board-head span.dot{display:inline-flex;align-items:center;gap:6px}
.board-head span.dot::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-teal)}
.board-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px;flex:1}
.tile{
  border:1px solid rgba(255,255,255,.14);
  border-radius:10px;padding:16px 14px;
  background:rgba(255,255,255,.04);
  display:flex;flex-direction:column;justify-content:center;gap:4px;
}
.tile .val{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:34px;line-height:1;font-weight:700;color:#fff;letter-spacing:-.02em}
.tile .val small{font-size:13px;font-weight:500;color:rgba(255,255,255,.7);margin-left:3px;letter-spacing:0}
.tile .cap{font-size:12px;color:rgba(255,255,255,.66);line-height:1.5}
.tile .trend{font-size:12px;font-family:var(--font-num);color:var(--c-teal)}
.tile .trend.warn{color:var(--c-amber)}
.hero-ticks{display:grid;grid-template-columns:repeat(4,1fr);height:16px;border-top:1px solid var(--line)}
.hero-ticks i{position:relative}
.hero-ticks i::before{content:"";position:absolute;top:0;left:0;width:1px;height:10px;background:var(--ink-3);opacity:.45}
.hero-ticks i:first-child::before{display:none}

/* ---------- KPI ---------- */
.kpi-band{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--card)}
.kpi-grid{display:grid;grid-template-columns:repeat(5,1fr)}
.kpi{padding:28px 22px;border-left:1px solid var(--line)}
.kpi:first-child{border-left:0;padding-left:0}
.kpi .k-idx{font-family:var(--font-num);font-size:11px;color:var(--accent);letter-spacing:.08em;font-weight:700}
.kpi .k-val{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:42px;line-height:1.05;font-weight:700;color:var(--brand);margin:8px 0 2px;letter-spacing:-.02em}
.kpi .k-val small{font-size:13px;font-family:var(--font-sans);font-weight:500;color:var(--ink-3);margin-left:4px;letter-spacing:0}
.kpi .k-label{font-size:14px;font-weight:600;color:var(--ink)}
.kpi .k-note{font-size:12px;color:var(--ink-3);margin-top:4px;line-height:1.6}

/* ---------- section base ---------- */
.section{padding:96px 0}
.section-alt{background:var(--bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:32px;line-height:1.28}
.section-head .lead{font-size:16px;color:var(--ink-2);margin-top:10px;max-width:640px}
.section-head::before{content:"";display:block;width:100%;order:-1;height:0}
.sec-rule{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.sec-rule .idx{font-family:var(--font-num);font-size:12px;color:var(--accent);font-weight:700;letter-spacing:.08em}
.sec-rule .bar{flex:0 0 56px;height:1px;background:var(--accent);opacity:.55}

/* ---------- dark CTA strip ---------- */
.cta-strip{background:var(--brand-deep);border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12)}
.cta-strip .inner{display:flex;align-items:center;justify-content:space-between;gap:28px;padding:34px 0;flex-wrap:wrap}
.cta-strip h2{color:#fff;font-size:24px;line-height:1.35}
.cta-strip p{color:rgba(255,255,255,.66);font-size:14px;margin-top:6px}

/* ---------- services ---------- */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.svc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);display:flex;flex-direction:column;
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.svc-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6D1C3}
.svc-card .cover{border-radius:10px;overflow:hidden;aspect-ratio:16/10;background:var(--bg-2);margin-bottom:20px}
.svc-card .cover img{width:100%;height:100%;object-fit:cover}
.svc-card h3{font-size:22px;line-height:1.4;margin:14px 0 10px}
.svc-card p{font-size:15px;color:var(--ink-2);line-height:1.75}
.svc-list{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.svc-list li{position:relative;padding-left:16px;font-size:14px;color:var(--ink-2);line-height:1.65}
.svc-list li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;background:var(--accent);border-radius:2px}
.text-link{display:inline-flex;align-items:center;gap:6px;margin-top:20px;font-size:14px;font-weight:600;color:var(--brand)}
.text-link .arw{transition:transform .18s ease-out}
.text-link:hover{color:var(--accent)}
.text-link:hover .arw{transform:translateX(3px)}
.mini-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
}
.mini-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6D1C3}
.mini-card .m-idx{font-family:var(--font-num);font-size:12px;color:var(--accent);font-weight:700;letter-spacing:.08em}
.mini-card .m-ico{width:24px;height:24px;margin:14px 0 12px;color:var(--brand)}
.mini-card h4{font-size:17px;line-height:1.45;margin-bottom:8px}
.mini-card p{font-size:14px;color:var(--ink-2);line-height:1.7}
.mini-card a{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
.mini-card a:hover{color:var(--accent)}
.wide-bar{
  margin-top:24px;display:flex;align-items:center;justify-content:space-between;
  height:56px;padding:0 24px;border-radius:var(--radius-card);
  background:var(--bg-2);border:1px solid var(--line);
  font-size:15px;font-weight:600;color:var(--brand);
  transition:background .18s ease-out,border-color .18s ease-out,color .18s ease-out;
}
.wide-bar:hover{background:var(--brand-soft);border-color:#CFD9D0;color:var(--brand)}
.wide-bar .arw{transition:transform .18s ease-out}
.wide-bar:hover .arw{transform:translateX(4px)}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.compare .side h2{font-size:32px;line-height:1.3;margin-bottom:14px}
.compare .side p{font-size:15px;color:var(--ink-2);line-height:1.8}
.compare .side .note{margin-top:18px;font-size:13px;color:var(--ink-3);padding-left:12px;border-left:2px solid var(--line)}
.cmp-table{border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--card);box-shadow:var(--shadow)}
.cmp-head{display:grid;grid-template-columns:1fr 1.6fr;background:var(--brand-deep);color:#fff;font-size:13px;font-weight:600;letter-spacing:.04em}
.cmp-head span{padding:14px 20px}
.cmp-head span:last-child{border-left:1px solid rgba(255,255,255,.14)}
.cmp-row{display:grid;grid-template-columns:1fr 1.6fr;border-top:1px solid var(--line);transition:background .16s ease-out}
.cmp-row:hover{background:var(--bg)}
.cmp-name{padding:18px 20px;font-size:14px;font-weight:600;color:var(--ink);display:flex;align-items:center}
.cmp-values{padding:14px 20px;border-left:1px solid var(--line);display:flex;flex-direction:column;gap:10px;justify-content:center;min-height:52px}
.bar-line{display:flex;align-items:center;gap:10px}
.bar-tag{flex:0 0 30px;font-size:11px;color:var(--ink-3);font-family:var(--font-num)}
.bar-track{flex:1;height:8px;border-radius:999px;background:var(--bg-2);overflow:hidden}
.bar{height:100%;border-radius:999px}
.bar-muted{background:#C9CEC8}
.bar-accent{background:var(--accent)}
.bar-val{flex:0 0 56px;text-align:right;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:13px;font-weight:600;color:var(--ink)}

/* ---------- news / cms ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 18px 16px;box-shadow:var(--shadow);
  transition:transform .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  color:var(--ink);
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D6D1C3;color:var(--ink)}
.news-card .thumb{aspect-ratio:16/10;border-radius:10px;overflow:hidden;background:var(--bg-2);margin-bottom:16px}
.news-card .thumb img{width:100%;height:100%;object-fit:cover}
.news-card h3{font-size:17px;line-height:1.5;margin:10px 0 8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .18s ease-out}
.news-card:hover h3{color:var(--brand)}
.news-card .sum{font-size:14px;color:var(--ink-2);line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-foot{display:flex;align-items:center;justify-content:space-between;margin-top:16px;padding-top:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3)}
.news-foot .arw{transition:transform .18s ease-out;color:var(--brand)}
.news-card:hover .news-foot .arw{transform:translateX(3px)}
.cms-empty{
  grid-column:1/-1;
  border:1px dashed var(--line);border-radius:var(--radius-card);
  background:#FCFBF7;
  max-height:220px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
  padding:40px 24px;text-align:center;
}
.cms-empty svg{width:40px;height:40px;color:var(--ink-3)}
.cms-empty p{font-size:14px;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;align-items:start}
.faq-side{position:sticky;top:96px}
.faq-side h2{font-size:32px;line-height:1.3;margin-bottom:14px}
.faq-side p{font-size:15px;color:var(--ink-2);line-height:1.8}
.faq-side .btn{margin-top:22px}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:20px 0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);
  transition:color .18s ease-out;
}
.faq-q:hover{color:var(--brand)}
.faq-ico{position:relative;flex:0 0 20px;width:20px;height:20px;transition:transform .2s ease-out}
.faq-ico::before,.faq-ico::after{content:"";position:absolute;background:var(--accent);border-radius:2px}
.faq-ico::before{top:9px;left:0;width:20px;height:2px}
.faq-ico::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-ico{transform:rotate(180deg)}
.faq-item.is-open .faq-ico::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-a p{font-size:15px;line-height:1.8;color:var(--ink-2);padding:0 0 22px}

/* ---------- contact form ---------- */
.contact{background:var(--brand-deep) url('/assets/images/backpic/back-2.webp') center/cover no-repeat;position:relative;color:#fff}
.contact::before{content:"";position:absolute;inset:0;background:rgba(18,51,43,.9)}
.contact .container{position:relative;z-index:1}
.contact-grid{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:start}
.contact h2{color:#fff;font-size:32px;line-height:1.3;margin-bottom:14px}
.contact .lead{color:rgba(255,255,255,.72);font-size:15px;line-height:1.8}
.guarantees{margin-top:28px;display:flex;flex-direction:column;gap:14px}
.guarantees div{display:flex;gap:12px;align-items:flex-start;font-size:14px;color:rgba(255,255,255,.8);line-height:1.7}
.guarantees .g-idx{font-family:var(--font-num);font-size:12px;color:var(--c-amber);font-weight:700;flex:0 0 26px;padding-top:2px}
.contact-info{margin-top:28px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);font-size:14px;color:rgba(255,255,255,.75);display:flex;flex-direction:column;gap:8px}
.contact-info strong{color:#fff;font-weight:600}
.form-card{background:var(--card);border:1px solid rgba(255,255,255,.14);border-radius:var(--radius-card);padding:32px;box-shadow:0 24px 48px -30px rgba(0,0,0,.6)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field.col-2{grid-column:1/-1}
.field label{font-size:13px;color:var(--ink-2);font-weight:600}
.field label .req{color:var(--accent);margin-left:2px}
.field input,.field select,.field textarea{
  height:44px;padding:0 14px;border:1px solid var(--line);border-radius:var(--radius-btn);
  background:#fff;transition:border-color .16s ease-out,box-shadow .16s ease-out;
}
.field textarea{height:auto;min-height:120px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(194,112,59,.16);
}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--ink-3) 50%),linear-gradient(135deg,var(--ink-3) 50%,transparent 50%);background-position:calc(100% - 18px) 19px,calc(100% - 13px) 19px;background-size:5px 5px,5px 5px;background-repeat:no-repeat}
.form-actions{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:2px}
.form-privacy{font-size:12px;color:var(--ink-3);line-height:1.6;max-width:360px}
.form-status{grid-column:1/-1;display:none;font-size:13px;padding:10px 14px;border-radius:8px;line-height:1.6}
.form-status.ok{display:block;background:var(--brand-soft);color:var(--brand);border:1px solid #CFD9D0}
.form-status.err{display:block;background:#FBEAE5;color:var(--c-brick);border:1px solid #EED3CB}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.72);padding:64px 0 0;position:relative;overflow:hidden}
.site-footer::before{
  content:"";position:absolute;inset:0;opacity:.08;pointer-events:none;
  background-image:linear-gradient(30deg,rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(120deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:56px 56px;
}
.footer-grid{position:relative;display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .logo-text strong{color:#fff}
.footer-brand .logo-text em{color:rgba(255,255,255,.55)}
.footer-brand .logo-mark{background:#fff}
.footer-brand .logo-mark i{border-color:var(--brand)}
.footer-brand .logo-mark i::after{background:var(--brand)}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;max-width:300px}
.footer-brand .contact-mini{margin-top:18px;font-size:13px;display:flex;flex-direction:column;gap:6px}
.footer-brand .contact-mini strong{color:#fff;font-weight:600}
.footer-col h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.02em;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col a{color:rgba(255,255,255,.72);font-size:14px;transition:color .16s ease-out,transform .16s ease-out;display:inline-block}
.footer-col a:hover{color:var(--accent);transform:translateX(2px)}
.footer-col li span{font-size:14px;color:rgba(255,255,255,.6)}
.footer-bottom{
  position:relative;border-top:1px solid rgba(255,255,255,.14);
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  padding:20px 0 26px;font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{
  display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(255,255,255,.28);color:#fff;background:transparent;
  transition:background .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.to-top:hover{background:var(--accent);border-color:var(--accent);color:#fff;transform:translateY(-2px)}

/* ---------- responsive ---------- */
@media (max-width:1100px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-board{min-height:360px}
  .kpi-grid{grid-template-columns:repeat(3,1fr)}
  .kpi{border-left:1px solid var(--line);padding:24px 20px}
  .kpi:nth-child(3n+1){border-left:0;padding-left:0}
  .kpi:nth-child(n+4){border-top:1px solid var(--line)}
  .compare{grid-template-columns:1fr;gap:32px}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-side{position:static}
  .contact-grid{grid-template-columns:1fr;gap:36px}
  .news-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:960px){
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;left:0;right:0;top:60px;bottom:0;z-index:110;
    background:var(--bg);
    flex-direction:column;align-items:stretch;gap:2px;
    padding:20px 20px 40px;
    border-top:1px solid var(--line);
    overflow-y:auto;
    transform:translateY(-10px);opacity:0;pointer-events:none;
    transition:opacity .2s ease-out,transform .2s ease-out;
  }
  body.nav-open .main-nav{opacity:1;transform:none;pointer-events:auto}
  .nav-link{height:52px;font-size:18px;padding:0 4px;border-radius:0;border-bottom:1px solid var(--line);justify-content:space-between}
  .nav-link::after{display:none!important}
  .nav-link::before{content:"›";order:2;color:var(--ink-3);font-size:20px;line-height:1}
  .nav-link.is-active{color:var(--brand)}
  .nav-sep,.main-nav > .nav-cta{display:none}
  .nav-drawer-foot{display:flex;flex-direction:column;gap:14px;margin-top:26px}
  .nav-drawer-foot p{font-size:13px;color:var(--ink-3);text-align:center}
  .header-inner{height:60px}
  .logo-text em{display:none}
  .section{padding:72px 0}
  .hero{padding-top:48px}
  .grid-2{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-strip .inner{padding:28px 0}
}
@media (max-width:767px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .section-head h2,.compare .side h2,.faq-side h2,.contact h2{font-size:26px}
  h1{font-size:30px}
  .hero h1{font-size:30px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-trust{gap:16px}
  .kpi-grid{grid-template-columns:1fr 1fr}
  .kpi{padding:20px 16px;border-left:1px solid var(--line)}
  .kpi:nth-child(3n+1){border-left:1px solid var(--line);padding-left:16px}
  .kpi:nth-child(odd){border-left:0;padding-left:0}
  .kpi:nth-child(n+3){border-top:1px solid var(--line)}
  .kpi .k-val{font-size:34px}
  .news-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form-card{padding:22px}
  .form-actions{flex-direction:column;align-items:stretch}
  .form-actions .btn{width:100%}
  .form-privacy{max-width:none}
  .cmp-head{grid-template-columns:1fr}
  .cmp-head span:last-child{display:none}
  .cmp-row{grid-template-columns:1fr}
  .cmp-values{border-left:0;border-top:1px dashed var(--line);padding-top:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-col{border-top:1px solid rgba(255,255,255,.12);padding-top:20px}
  .footer-brand p{max-width:none}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .site-footer{padding-top:48px}
  .wide-bar{padding:0 16px;font-size:14px}
  .cta-strip h2{font-size:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}
html{scroll-behavior:smooth}

/* roulang page: article */
:root{
  --brand:#1F4A3D;
  --brand-deep:#12332B;
  --brand-soft:#E7EDE8;
  --accent:#C2703B;
  --accent-soft:#F3E2D6;
  --accent-hover:#A85C2C;
  --bg:#F6F4EE;
  --card:#FFFFFF;
  --band:#EFEDE4;
  --ink:#1A1F1C;
  --ink-2:#5A6660;
  --ink-3:#8A938D;
  --line:#E2DED3;
  --line-dark:rgba(255,255,255,.14);
  --c-teal:#2E8C7A;
  --c-amber:#E8B04B;
  --c-brick:#B4553C;
  --c-graphite:#4A5A54;
  --r-card:14px;
  --r-btn:10px;
  --r-badge:6px;
  --sh:0 1px 2px rgba(18,51,43,.06),0 10px 28px -18px rgba(18,51,43,.28);
  --sh-hover:0 4px 10px rgba(18,51,43,.08),0 18px 40px -20px rgba(18,51,43,.4);
  --gap:24px;
  --mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  background:var(--bg);
  color:var(--ink);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
}
img{max-width:100%;display:block;border-radius:var(--r-card);}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out,text-decoration-color .18s ease-out;}
a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--ink);}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 按钮 / 徽章 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;line-height:1;
  transition:transform .18s ease-out,background .18s ease-out,color .18s ease-out,box-shadow .18s ease-out,border-color .18s ease-out;
  white-space:nowrap;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 1px 2px rgba(18,51,43,.10);}
.btn-primary:hover{background:var(--accent-hover);color:#fff;text-decoration:none;transform:translateY(-1px);box-shadow:0 8px 20px -12px rgba(168,92,44,.9);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--brand);border:1px solid var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;transform:translateY(-1px);}
.btn-light-outline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.5);}
.btn-light-outline:hover{background:rgba(255,255,255,.1);color:#fff;text-decoration:none;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--brand-soft);color:var(--brand);
  border-radius:var(--r-badge);font-size:12px;font-weight:600;
  padding:4px 10px;line-height:1.4;
}
.badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.badge-accent{background:var(--accent-soft);color:var(--accent-hover);}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(246,244,238,.96);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease-out;
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(18,51,43,.08);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.logo:hover{text-decoration:none;color:var(--ink);}
.logo-mark{
  position:relative;width:32px;height:32px;flex:0 0 32px;
  background:var(--brand);border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  clip-path:polygon(25% 3%,75% 3%,100% 50%,75% 97%,25% 97%,0 50%);
}
.logo-mark i{display:block;width:14px;height:2px;background:var(--accent);box-shadow:0 5px 0 rgba(255,255,255,.7),0 -5px 0 rgba(255,255,255,.4);}
.logo-text{display:flex;flex-direction:column;line-height:1.1;}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:-.01em;}
.logo-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.02em;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  height:44px;padding:0 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--ink-2);
  transition:background .18s ease-out,color .18s ease-out;
}
.nav-link:hover{background:var(--band);color:var(--brand);text-decoration:none;}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;bottom:8px;width:60%;height:2px;
  background:var(--accent);border-radius:2px;
}
.nav-sep{width:1px;height:22px;background:var(--line);margin:0 10px;}
.nav-cta{margin-left:4px;}
.nav-drawer-foot{display:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:10px;
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
  border:1px solid var(--line);background:var(--card);
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--brand);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- 面包屑 ---------- */
.crumb-bar{background:var(--band);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);padding:14px 0;}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--accent);}
.crumb .sep{color:var(--ink-3);opacity:.7;}
.crumb .current{color:var(--ink-3);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-head{padding:44px 0 8px;position:relative;}
.article-head::before{
  content:"";display:block;width:64px;height:1px;background:var(--line);
  position:absolute;top:26px;left:24px;
}
.article-head .badge{margin-bottom:16px;}
.article-title{
  font-size:clamp(28px,3.2vw,38px);line-height:1.3;letter-spacing:-.02em;
  margin-bottom:16px;max-width:24em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ink-3);}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ink-3);opacity:.6;}
.article-hero{margin-top:26px;}
.article-hero img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.article-hero figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}

/* ---------- 主体栅格 ---------- */
.article-main{padding:40px 0 96px;}
.article-layout{display:grid;grid-template-columns:minmax(0,2.05fr) minmax(0,1fr);gap:40px;align-items:start;}
.article-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);padding:32px;}

/* ---------- 正文排版 ---------- */
.article-body{max-width:720px;font-size:17px;line-height:1.85;color:var(--ink);}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.2em;}
.article-body h2{
  font-size:24px;line-height:1.4;margin:32px 0 12px;padding-left:14px;
  border-left:4px solid var(--accent);
}
.article-body h3{font-size:20px;line-height:1.5;margin:26px 0 10px;}
.article-body h4{font-size:17px;margin:22px 0 8px;color:var(--brand);}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:0;}
.article-body ul > li{position:relative;padding-left:20px;margin-bottom:.5em;}
.article-body ul > li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;
  background:var(--accent);border-radius:1px;
}
.article-body ol{counter-reset:li;}
.article-body ol > li{position:relative;padding-left:26px;margin-bottom:.5em;counter-increment:li;}
.article-body ol > li::before{
  content:counter(li,decimal-leading-zero);
  position:absolute;left:0;top:0;font-family:var(--mono);font-size:13px;
  color:var(--accent);font-weight:700;
}
.article-body blockquote{
  margin:0 0 1.2em;background:var(--bg);border-left:3px solid var(--accent);
  border-radius:0 10px 10px 0;padding:16px 20px;color:var(--ink-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body table{width:100%;border-collapse:collapse;margin:0 0 1.4em;font-size:15px;}
.article-body thead th{background:var(--brand-deep);color:#fff;font-weight:600;text-align:left;padding:12px 14px;}
.article-body tbody td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tbody tr:nth-child(even){background:var(--bg);}
.article-body img{margin:0 auto 8px;border-radius:12px;}
.article-body figure{margin:0 0 1.4em;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;}
.article-body a{color:var(--brand);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.article-body a:hover{color:var(--accent);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:28px 0;}

/* ---------- 空态 ---------- */
.empty-card{
  border:1px dashed var(--line);border-radius:var(--r-card);
  background:var(--card);padding:40px 24px;text-align:center;max-height:260px;
}
.empty-card .empty-ico{
  width:44px;height:44px;margin:0 auto 14px;border-radius:10px;
  background:var(--band);color:var(--ink-3);font-family:var(--mono);
  display:flex;align-items:center;justify-content:center;font-size:16px;
}
.empty-card p{color:var(--ink-2);font-size:14px;margin-bottom:16px;}

/* ---------- 标签 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:32px;padding-top:24px;border-top:1px solid var(--line);}
.tag-row .tag-label{font-size:13px;color:var(--ink-3);margin-right:4px;}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;
  border:1px solid var(--line);border-radius:999px;background:var(--bg);
  font-size:13px;color:var(--ink-2);transition:border-color .18s ease-out,color .18s ease-out,background .18s ease-out;
}
.tag:hover{border-color:var(--accent);color:var(--accent-hover);background:var(--accent-soft);text-decoration:none;}

/* ---------- 侧栏 ---------- */
.side{display:grid;gap:20px;position:sticky;top:88px;}
.side-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh);padding:22px;}
.side-title{font-size:13px;font-weight:700;color:var(--ink-2);letter-spacing:.02em;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:14px;height:2px;background:var(--accent);border-radius:2px;}
.toc{display:grid;gap:2px;}
.toc a{
  display:block;font-size:14px;line-height:1.6;color:var(--ink-2);
  padding:7px 10px;border-left:2px solid transparent;border-radius:0 6px 6px 0;
  transition:background .18s ease-out,color .18s ease-out,border-color .18s ease-out;
}
.toc a:hover{background:var(--bg);color:var(--brand);border-left-color:var(--accent);text-decoration:none;}
.toc a.is-current{color:var(--brand);font-weight:600;border-left-color:var(--accent);background:var(--brand-soft);}
.side-links{display:grid;gap:10px;}
.side-links a{font-size:14px;line-height:1.6;color:var(--ink-2);display:flex;gap:8px;align-items:flex-start;}
.side-links a span{font-family:var(--mono);font-size:12px;color:var(--accent);line-height:1.9;}
.side-links a:hover{color:var(--brand);text-decoration:none;}
.side-contact{background:var(--brand-deep);color:#fff;border:1px solid var(--brand-deep);}
.side-contact h4{color:#fff;font-size:17px;margin-bottom:8px;}
.side-contact p{font-size:13px;color:rgba(255,255,255,.72);line-height:1.7;margin-bottom:16px;}
.side-contact .btn{width:100%;}
.side-contact .tel{display:block;margin-top:12px;font-family:var(--mono);font-size:15px;color:#fff;font-weight:700;}

/* ---------- 相关内容 ---------- */
.related{padding:0 0 96px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:28px;padding-top:26px;border-top:1px solid var(--line);}
.section-head h2{font-size:28px;line-height:1.3;}
.section-head p{font-size:14px;color:var(--ink-3);margin-top:6px;}
.section-head .more{font-size:14px;color:var(--brand);display:inline-flex;align-items:center;gap:6px;}
.section-head .more:hover{color:var(--accent);text-decoration:none;}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.info-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh);
  transition:transform .18s ease-out,box-shadow .18s ease-out;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-hover);text-decoration:none;}
.info-card .cover{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:0;}
.info-card .body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.info-card h3{font-size:16px;line-height:1.5;color:var(--ink);}
.info-card:hover h3{color:var(--brand);}
.info-card p{font-size:14px;color:var(--ink-2);line-height:1.7;}
.info-card .foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-3);}

/* ---------- 返回条 ---------- */
.back-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding:22px 0 0;margin-top:32px;}
.back-bar .group{display:flex;flex-wrap:wrap;gap:10px;}

/* ---------- CTA 通栏 ---------- */
.cta-band{background:var(--brand-deep);border-radius:var(--r-card);padding:32px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;margin-bottom:0;}
.cta-band h2{color:#fff;font-size:24px;line-height:1.4;}
.cta-band p{color:rgba(255,255,255,.72);font-size:14px;margin-top:8px;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding:64px 0 28px;margin-top:0;position:relative;overflow:hidden;}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.09;
  background-image:linear-gradient(30deg,rgba(255,255,255,.5) 1px,transparent 1px),linear-gradient(150deg,rgba(255,255,255,.5) 1px,transparent 1px);
  background-size:48px 84px;
}
.site-footer .container{position:relative;z-index:1;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .logo{color:#fff;margin-bottom:16px;}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.55);}
.footer-brand .logo-mark{background:rgba(255,255,255,.14);}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:34em;}
.contact-mini{margin-top:16px;display:grid;gap:6px;font-size:13px;color:rgba(255,255,255,.68);}
.contact-mini strong{color:#fff;font-weight:600;font-family:var(--mono);}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:14px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;line-height:1.6;}
.footer-col a,.footer-col span{color:rgba(255,255,255,.7);display:inline-block;transition:color .18s ease-out,transform .18s ease-out;}
.footer-col a:hover{color:var(--accent);text-decoration:none;transform:translateX(2px);}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line-dark);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:rgba(255,255,255,.55);
}
.to-top{
  width:36px;height:36px;border-radius:50%;border:1px solid rgba(255,255,255,.35);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:15px;
  transition:background .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.to-top:hover{border-color:var(--accent);background:var(--accent);transform:translateY(-2px);}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .article-layout{grid-template-columns:1fr;gap:28px;}
  .side{position:static;}
  .article-panel{padding:26px;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:960px){
  .nav-toggle{display:flex;}
  .main-nav{
    position:fixed;inset:60px 0 0 0;z-index:70;
    display:flex;flex-direction:column;align-items:stretch;gap:6px;
    background:var(--bg);padding:24px;overflow-y:auto;
    transform:translateX(100%);opacity:0;visibility:hidden;
    transition:transform .22s ease-out,opacity .22s ease-out,visibility .22s;
  }
  .main-nav.is-open{transform:translateX(0);opacity:1;visibility:visible;}
  .nav-link{height:52px;font-size:18px;padding:0 12px;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-link.is-active::after{display:none;}
  .nav-link.is-active{background:var(--brand-soft);border-radius:8px;border-bottom-color:transparent;}
  .nav-sep{display:none;}
  .nav-cta{margin:16px 0 0;width:100%;height:48px;font-size:16px;}
  .nav-drawer-foot{display:block;margin-top:auto;padding-top:20px;border-top:1px solid var(--line);}
  .nav-drawer-foot .btn{width:100%;height:48px;}
  .nav-drawer-foot p{font-size:13px;color:var(--ink-3);margin-top:12px;text-align:center;}
  .header-inner{height:60px;}
  body.nav-locked{overflow:hidden;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .article-head{padding:30px 0 4px;}
  .article-head::before{left:20px;top:16px;}
  .article-panel{padding:20px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{font-size:21px;margin-top:26px;}
  .article-body h3{font-size:18px;}
  .article-main{padding:28px 0 64px;}
  .related{padding-bottom:64px;}
  .section-head{flex-direction:column;align-items:flex-start;}
  .section-head h2{font-size:22px;}
  .card-grid{grid-template-columns:1fr;}
  .crumb .current{white-space:normal;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-brand p{max-width:none;}
  .cta-band{padding:24px;}
  .cta-band h2{font-size:20px;}
  .back-bar{flex-direction:column;align-items:flex-start;}
}
@media (max-width:520px){
  .btn{width:100%;}
  .back-bar .group{width:100%;}
  .tag-row{gap:6px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category1 */
:root{
  --brand:#1F4A3D;
  --brand-deep:#12332B;
  --brand-soft:#E7EDE8;
  --accent:#C2703B;
  --accent-soft:#F3E2D6;
  --accent-hover:#A85C2C;
  --bg:#F6F4EE;
  --card:#FFFFFF;
  --layer:#EFEDE4;
  --ink:#1A1F1C;
  --ink-2:#5A6660;
  --ink-3:#8A938D;
  --line:#E2DED3;
  --line-dark:rgba(255,255,255,.14);
  --data-teal:#2E8C7A;
  --data-amber:#E8B04B;
  --data-brick:#B4553C;
  --data-graphite:#4A5A54;
  --radius-card:14px;
  --radius-btn:10px;
  --radius-badge:6px;
  --shadow:0 1px 2px rgba(18,51,43,.06),0 10px 28px -18px rgba(18,51,43,.28);
  --shadow-hover:0 2px 4px rgba(18,51,43,.08),0 16px 34px -18px rgba(18,51,43,.36);
  --space-section:96px;
  --ease:cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16px;line-height:1.75;color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img{max-width:100%;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .18s var(--ease);}
a:hover{color:var(--accent);}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input,select,textarea{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.mono{font-family:ui-monospace,"SFMono-Regular","DIN Alternate",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  border:1px solid transparent;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent);}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:0 8px 18px -10px rgba(168,92,44,.9);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-ghost{background:transparent;color:var(--brand);border-color:var(--brand);}
.btn-ghost:hover{background:var(--brand-soft);color:var(--brand);}
.btn-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.5);}
.btn-light:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;height:68px;
  background:rgba(246,244,238,.96);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(18,51,43,.08);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px;}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--ink);}
.logo:hover{color:var(--ink);}
.logo-mark{
  position:relative;width:32px;height:32px;flex:0 0 32px;
  background:var(--brand);
  clip-path:polygon(25% 3%,75% 3%,100% 50%,75% 97%,25% 97%,0 50%);
  display:inline-flex;align-items:center;justify-content:center;
}
.logo-mark i{display:block;width:12px;height:12px;border-left:2px solid #fff;border-bottom:2px solid var(--accent);transform:rotate(-45deg) translate(1px,-1px);}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:16px;font-weight:700;letter-spacing:.02em;color:var(--brand);}
.logo-text em{font-style:normal;font-size:11px;color:var(--ink-3);letter-spacing:.04em;}
.main-nav{display:flex;align-items:center;gap:4px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:44px;
  padding:0 14px;border-radius:8px;font-size:15px;color:var(--ink-2);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-link:hover{background:var(--layer);color:var(--brand);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;bottom:4px;width:calc(60% - 8px);height:2px;background:var(--accent);border-radius:2px;
}
.nav-sep{width:1px;height:24px;background:var(--line);margin:0 10px;}
.nav-cta{margin-left:2px;}
.nav-drawer-foot{display:none;}
.nav-toggle{display:none;width:44px;height:44px;border-radius:8px;align-items:center;justify-content:center;flex-direction:column;gap:5px;}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--brand);border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ---------- breadcrumb ---------- */
.crumb-bar{background:var(--bg);border-bottom:1px solid var(--line);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:14px;color:var(--ink-3);}
.crumb a{color:var(--ink-2);}
.crumb a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{color:var(--ink-3);opacity:.7;}
.crumb .current{color:var(--ink-3);}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;color:#fff;
  background:var(--brand-deep);
  padding:80px 0 72px;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  opacity:.9;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(18,51,43,.94) 0%,rgba(18,51,43,.82) 52%,rgba(18,51,43,.66) 100%);
}
.cat-hero .hex-deco{
  position:absolute;inset:0;opacity:.07;pointer-events:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='56' viewBox='0 0 64 56'%3E%3Cpath d='M32 1 60 16v24L32 55 4 40V16z' fill='none' stroke='%23ffffff' stroke-width='1'/%3E%3C/svg%3E");
  background-size:64px 56px;
}
.cat-hero .container{position:relative;z-index:2;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 12px;
  border-radius:var(--radius-badge);border:1px solid rgba(255,255,255,.28);
  background:rgba(255,255,255,.1);color:#fff;font-size:12.5px;letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--data-amber);}
.cat-hero h1{
  margin:20px 0 18px;font-size:clamp(30px,4vw,50px);line-height:1.18;font-weight:700;letter-spacing:-.02em;color:#fff;
}
.cat-hero h1 .hl{color:#fff;border-bottom:3px solid var(--accent);padding-bottom:2px;}
.hero-lead{font-size:16.5px;line-height:1.8;color:rgba(255,255,255,.84);max-width:620px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;padding-top:22px;border-top:1px solid rgba(255,255,255,.16);}
.hero-fact{display:flex;flex-direction:column;gap:2px;}
.hero-fact .n{font-family:ui-monospace,"DIN Alternate",Menlo,monospace;font-size:12px;color:var(--data-amber);letter-spacing:.08em;}
.hero-fact .t{font-size:13.5px;color:rgba(255,255,255,.78);}

.hero-panel{
  background:rgba(8,30,25,.55);border:1px solid rgba(255,255,255,.18);
  border-radius:14px;padding:26px;
}
.hero-panel h2{font-size:15px;font-weight:600;color:#fff;letter-spacing:.02em;display:flex;align-items:center;gap:10px;}
.hero-panel h2::after{content:"";flex:1;height:1px;background:rgba(255,255,255,.18);}
.hero-panel ul{margin-top:16px;display:grid;gap:14px;}
.hero-panel li{display:grid;grid-template-columns:32px 1fr;gap:12px;align-items:start;}
.hero-panel .idx{font-family:ui-monospace,"DIN Alternate",Menlo,monospace;font-size:12px;color:var(--data-amber);padding-top:3px;}
.hero-panel .txt{font-size:14px;line-height:1.7;color:rgba(255,255,255,.82);}
.hero-panel .txt strong{display:block;color:#fff;font-size:14.5px;font-weight:600;margin-bottom:2px;}
.scale-rule{height:16px;display:flex;align-items:flex-end;gap:0;position:relative;z-index:3;}
.scale-rule span{height:8px;border-left:1px solid rgba(255,255,255,.4);}
.scale-rule span:first-child{border-left:0;}

/* ---------- sections ---------- */
.section{padding:var(--space-section) 0;}
.section.alt{background:var(--layer);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap;}
.section-head .tick{display:block;width:56px;height:2px;background:var(--accent);margin-bottom:16px;}
.section-title{font-size:32px;line-height:1.28;font-weight:700;letter-spacing:-.01em;color:var(--ink);}
.section-sub{margin-top:12px;font-size:15.5px;color:var(--ink-2);max-width:640px;}
.section-link{display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:var(--brand);}
.section-link:hover{color:var(--accent);}
.section-link .ar{transition:transform .18s var(--ease);}
.section-link:hover .ar{transform:translateX(3px);}

/* ---------- service cards ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.svc-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px;box-shadow:var(--shadow);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.svc-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#D3CDBE;}
.svc-head{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.svc-num{
  font-family:ui-monospace,"DIN Alternate",Menlo,monospace;font-size:12.5px;font-weight:700;
  color:var(--brand);background:var(--brand-soft);border-radius:var(--radius-badge);
  padding:4px 8px;letter-spacing:.06em;
}
.svc-tag{font-size:12px;color:var(--accent);background:var(--accent-soft);border-radius:var(--radius-badge);padding:4px 8px;}
.svc-card h3{font-size:22px;line-height:1.4;font-weight:700;color:var(--ink);}
.svc-card .desc{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ink-2);}
.points{margin-top:18px;display:grid;gap:10px;}
.points li{position:relative;padding-left:18px;font-size:14.5px;line-height:1.7;color:var(--ink-2);}
.points li::before{content:"";position:absolute;left:0;top:9px;width:6px;height:6px;border-radius:1px;background:var(--accent);}
.svc-card .mini-link{display:inline-flex;align-items:center;gap:6px;margin-top:20px;font-size:14px;font-weight:600;color:var(--brand);}
.svc-card .mini-link:hover{color:var(--accent);}
.svc-card .mini-link:hover .ar{transform:translateX(3px);}
.svc-card .mini-link .ar{transition:transform .18s var(--ease);}

/* ---------- image band ---------- */
.img-band{margin-top:32px;}
.img-band figure{border-radius:var(--radius-card);overflow:hidden;border:1px solid var(--line);background:var(--layer);box-shadow:var(--shadow);}
.img-band .frame{position:relative;aspect-ratio:21/9;overflow:hidden;}
.img-band img{width:100%;height:100%;object-fit:cover;}
.img-band .overlay{
  position:absolute;inset:auto 0 0 0;padding:22px 26px;
  background:linear-gradient(0deg,rgba(18,51,43,.88),rgba(18,51,43,0));
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:12px;
}
.img-band .overlay p{color:#fff;font-size:16px;font-weight:600;}
.img-band .overlay span{color:rgba(255,255,255,.78);font-size:13px;}
.img-band figcaption{margin-top:10px;font-size:13px;color:var(--ink-3);}

/* ---------- flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:0;border-top:1px solid var(--line);}
.step{position:relative;padding:28px 24px 4px 0;border-right:1px solid var(--line);}
.step:last-child{border-right:0;padding-right:0;}
.step::before{
  content:"";position:absolute;top:-1px;left:0;width:36px;height:2px;background:var(--accent);
}
.step .sn{font-family:ui-monospace,"DIN Alternate",Menlo,monospace;font-size:12.5px;font-weight:700;color:var(--accent);letter-spacing:.08em;}
.step h4{margin-top:10px;font-size:17px;font-weight:700;color:var(--ink);}
.step p{margin-top:8px;font-size:14px;line-height:1.75;color:var(--ink-2);padding-right:16px;}
.step .meta{margin-top:14px;font-size:12.5px;color:var(--ink-3);}

/* ---------- checklist ---------- */
.check-wrap{display:grid;grid-template-columns:4fr 8fr;gap:40px;align-items:start;}
.check-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow);}
.check-card h3{font-size:18px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.check-card .hint{font-size:13.5px;color:var(--ink-3);margin-bottom:20px;}
.check-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 28px;}
.check-list li{display:grid;grid-template-columns:18px 1fr;gap:10px;font-size:14.5px;line-height:1.7;color:var(--ink-2);}
.check-list li::before{content:"";width:8px;height:8px;margin-top:8px;border-radius:2px;background:var(--brand);}
.check-list li strong{display:block;color:var(--ink);font-weight:600;font-size:15px;}
.aside-note{background:var(--brand-soft);border:1px solid #D3DFD6;border-radius:var(--radius-card);padding:26px;}
.aside-note h3{font-size:18px;font-weight:700;color:var(--brand);margin-bottom:10px;}
.aside-note p{font-size:14.5px;line-height:1.8;color:var(--ink-2);}
.aside-note .btn{margin-top:20px;}

/* ---------- proof strip ---------- */
.proof{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--card);}
.proof-item{padding:26px 24px;border-right:1px solid var(--line);}
.proof-item:last-child{border-right:0;}
.proof-item .n{font-family:ui-monospace,"DIN Alternate",Menlo,monospace;font-size:34px;line-height:1;font-weight:700;color:var(--brand);}
.proof-item .n em{font-style:normal;font-size:13px;color:var(--ink-3);margin-left:6px;font-weight:500;}
.proof-item .l{margin-top:10px;font-size:14.5px;font-weight:600;color:var(--ink);}
.proof-item .d{margin-top:6px;font-size:13px;color:var(--ink-3);line-height:1.7;}

/* ---------- cta ---------- */
.cta-band{background:var(--brand-deep);color:#fff;padding:56px 0;position:relative;overflow:hidden;}
.cta-band .hex-deco{
  position:absolute;inset:0;opacity:.06;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='64' height='56' viewBox='0 0 64 56'%3E%3Cpath d='M32 1 60 16v24L32 55 4 40V16z' fill='none' stroke='%23ffffff' stroke-width='1'/%3E%3C/svg%3E");
  background-size:64px 56px;
}
.cta-inner{position:relative;z-index:2;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;border:1px solid rgba(255,255,255,.18);border-radius:14px;padding:32px 36px;}
.cta-inner h2{font-size:26px;line-height:1.35;font-weight:700;color:#fff;}
.cta-inner p{margin-top:10px;font-size:14.5px;color:rgba(255,255,255,.78);max-width:640px;}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding:72px 0 0;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:40px;padding-bottom:48px;}
.footer-brand .logo-text strong{color:#fff;}
.footer-brand .logo-text em{color:rgba(255,255,255,.62);}
.footer-brand .logo-mark{background:#fff;}
.footer-brand .logo-mark i{border-left-color:var(--brand-deep);border-bottom-color:var(--accent);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.72);max-width:360px;}
.contact-mini{margin-top:18px;display:grid;gap:6px;font-size:13.5px;color:rgba(255,255,255,.66);}
.contact-mini strong{color:#fff;font-weight:600;}
.footer-col{border-left:1px solid rgba(255,255,255,.12);padding-left:32px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:grid;gap:10px;}
.footer-col li{font-size:14px;color:rgba(255,255,255,.7);}
.footer-col a{color:rgba(255,255,255,.74);display:inline-block;transition:color .18s var(--ease),transform .18s var(--ease);}
.footer-col a:hover{color:var(--data-amber);transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.58);
}
.to-top{
  width:40px;height:40px;border-radius:50%;border:1px solid rgba(255,255,255,.32);
  color:#fff;display:inline-flex;align-items:center;justify-content:center;font-size:16px;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease),transform .18s var(--ease);
}
.to-top:hover{border-color:var(--accent);color:var(--accent);background:rgba(194,112,59,.12);transform:translateY(-2px);}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  :root{--space-section:80px;}
  .hero-grid{gap:36px;}
}
@media (max-width:1024px){
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .cat-hero{padding:64px 0 56px;}
  .check-wrap{grid-template-columns:1fr;gap:28px;}
  .svc-grid{gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .footer-col{border-left:0;padding-left:0;}
  .footer-col:nth-child(2){border-left:1px solid rgba(255,255,255,.12);padding-left:28px;}
  .footer-col:nth-child(4){border-left:1px solid rgba(255,255,255,.12);padding-left:28px;}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex;}
  .main-nav{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--bg);padding:20px 20px 32px;overflow-y:auto;
    border-top:1px solid var(--line);
    opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  }
  .main-nav.is-open{opacity:1;visibility:visible;transform:none;pointer-events:auto;}
  .nav-link{height:52px;font-size:18px;padding:0 12px;border-bottom:1px solid var(--line);border-radius:0;justify-content:space-between;}
  .nav-link::before{content:"›";order:2;font-size:20px;color:var(--ink-3);line-height:1;}
  .nav-link.is-active::after{left:12px;bottom:8px;width:calc(60% - 8px);}
  .nav-sep{display:none;}
  .nav-cta{display:none;}
  .nav-drawer-foot{display:grid;gap:12px;margin-top:24px;}
  .nav-drawer-foot .btn{width:100%;}
  .nav-drawer-foot p{font-size:13px;color:var(--ink-3);text-align:center;}
  .site-header{height:60px;}
  .header-inner{height:60px;}
  .main-nav{top:60px;}
  .flow{grid-template-columns:repeat(2,minmax(0,1fr));}
  .step{border-right:0;padding:24px 18px 20px 0;border-top:1px solid var(--line);}
  .step::before{top:-1px;}
  .proof{grid-template-columns:1fr;}
  .proof-item{border-right:0;border-bottom:1px solid var(--line);}
  .proof-item:last-child{border-bottom:0;}
}
@media (max-width:768px){
  :root{--space-section:64px;}
  .container{padding:0 20px;}
  .svc-grid{grid-template-columns:1fr;}
  .svc-card{padding:22px;}
  .section-title{font-size:25px;}
  .check-list{grid-template-columns:1fr;}
  .img-band .frame{aspect-ratio:16/10;}
  .img-band .overlay{padding:16px 18px;}
  .cta-inner{padding:26px 22px;}
  .cta-inner h2{font-size:22px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-col:nth-child(2),.footer-col:nth-child(4){border-left:0;padding-left:0;}
  .footer-col{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .hero-facts{gap:18px 26px;}
}
@media (max-width:560px){
  .flow{grid-template-columns:1fr;}
  .hero-actions .btn{width:100%;}
  .cat-hero h1{font-size:29px;}
  .hero-panel{padding:20px;}
  .section-head{margin-bottom:28px;}
  .check-card{padding:22px;}
  .crumb{font-size:13px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: category2 */
:root{
  --brand:#1F4A3D;--brand-deep:#12332B;--brand-soft:#E7EDE8;
  --accent:#C2703B;--accent-soft:#F3E2D6;--accent-deep:#A85C2C;
  --bg:#F6F4EE;--bg-2:#EFEDE4;--card:#FFFFFF;
  --ink:#1A1F1C;--ink-2:#5A6660;--ink-3:#8A938D;
  --line:#E2DED3;
  --c-teal:#2E8C7A;--c-amber:#E8B04B;--c-brick:#B4553C;--c-graphite:#4A5A54;
  --r-card:14px;--r-btn:10px;--r-badge:6px;--r-input:10px;
  --shadow:0 1px 2px rgba(18,51,43,.06),0 10px 28px -18px rgba(18,51,43,.28);
  --shadow-hover:0 2px 4px rgba(18,51,43,.08),0 18px 34px -20px rgba(18,51,43,.34);
  --mono:ui-monospace,"DIN Alternate","SFMono-Regular",Menlo,Consolas,monospace;
  --nav-h:68px;
}
*,*::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:-apple-system,"PingFang SC","Microsoft YaHei","Source Han Sans SC",sans-serif;font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--brand);text-decoration:none;transition:color .18s ease-out}
a:hover{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:80;background:rgba(246,244,238,.97);border-bottom:1px solid var(--line);transition:box-shadow .2s ease-out}
.site-header.is-scrolled{box-shadow:0 6px 18px rgba(18,51,43,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:var(--nav-h)}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.logo:hover{text-decoration:none;color:var(--ink)}
.logo-mark{position:relative;width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;background:var(--brand);clip-path:polygon(50% 0,93% 25%,93% 75%,50% 100%,7% 75%,7% 25%)}
.logo-mark i{display:block;width:12px;height:2px;background:#fff;box-shadow:0 4px 0 #fff,0 -4px 0 #fff}
.logo-text{display:flex;flex-direction:column;line-height:1.1}
.logo-text strong{font-size:15px;letter-spacing:.02em;color:var(--ink)}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.04em;color:var(--ink-3);margin-top:3px}
.main-nav{display:flex;align-items:center;gap:2px}
.nav-link{position:relative;display:inline-flex;align-items:center;height:44px;padding:0 14px;border-radius:8px;font-size:15px;color:var(--ink-2);transition:background-color .18s ease-out,color .18s ease-out}
.nav-link:hover{background:var(--bg-2);color:var(--brand);text-decoration:none}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:3px;width:60%;height:2px;border-radius:2px;background:var(--accent)}
.nav-sep{width:1px;height:20px;background:var(--line);margin:0 10px}
.nav-drawer-foot{display:none}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:8px;background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:var(--brand);transition:transform .2s ease-out,opacity .2s ease-out}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 20px;border:1px solid transparent;border-radius:var(--r-btn);font-size:15px;font-weight:600;white-space:nowrap;transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,box-shadow .18s ease-out,transform .18s ease-out}
.btn:hover{text-decoration:none}
.btn:disabled,.btn.is-disabled{opacity:.4;transform:none;box-shadow:none;pointer-events:none}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-deep);color:#fff;transform:translateY(-1px);box-shadow:0 10px 20px -12px rgba(168,92,44,.9)}
.btn-outline{border-color:var(--line);background:#fff;color:var(--brand)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.btn-ghost{border-color:rgba(255,255,255,.5);color:#fff;background:transparent}
.btn-ghost:hover{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-sm{height:36px;padding:0 16px;font-size:14px}

/* ---------- Badges / eyebrow ---------- */
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 11px;border-radius:var(--r-badge);background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.06em}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--r-badge);background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600}
.badge-accent{background:var(--accent-soft);color:var(--accent-deep)}

/* ---------- Hero ---------- */
.page-hero{position:relative;padding:52px 0 64px;border-bottom:1px solid var(--line);overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;pointer-events:none;opacity:.07;background-image:url("/assets/images/backpic/back-1.png");background-size:cover;background-position:center}
.page-hero .container{position:relative}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);margin-bottom:28px;flex-wrap:wrap}
.crumb a{color:var(--ink-2)}
.crumb a:hover{color:var(--accent)}
.crumb-sep{color:var(--ink-3)}
.crumb [aria-current]{color:var(--ink-3)}
.hero-inner{max-width:880px}
.page-hero h1{font-size:clamp(30px,4vw,46px);line-height:1.2;letter-spacing:-.02em;margin:18px 0 0}
.hero-lead{margin-top:18px;max-width:760px;font-size:17px;line-height:1.85;color:var(--ink-2)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.trust-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:34px;padding-top:22px;border-top:1px solid var(--line)}
.trust-row li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-2)}
.trust-row .idx{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.08em}

/* ---------- Sections ---------- */
.section{padding:96px 0;border-top:1px solid var(--line)}
.section-alt{background:var(--bg-2)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}
.section-head h2{font-size:32px;line-height:1.28}
.section-head .sub{margin-top:10px;font-size:15px;color:var(--ink-2);max-width:640px}
.rule{height:1px;background:var(--line);position:relative;margin:0 0 28px}
.rule::before{content:"";position:absolute;left:0;top:-1px;width:72px;height:3px;background:var(--accent)}

/* ---------- KPI ---------- */
.kpi{display:grid;grid-template-columns:repeat(4,1fr);background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden}
.kpi-cell{padding:24px;border-left:1px solid var(--line)}
.kpi-cell:first-child{border-left:0}
.kpi-idx{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--ink-3)}
.kpi-num{display:flex;align-items:baseline;gap:5px;margin-top:10px;font-family:var(--mono);font-size:32px;font-weight:700;line-height:1;color:var(--brand);font-variant-numeric:tabular-nums}
.kpi-num small{font-family:inherit;font-size:13px;font-weight:400;color:var(--ink-3)}
.kpi-label{margin-top:12px;font-size:14px;color:var(--ink)}
.kpi-note{margin-top:4px;font-size:12px;color:var(--ink-3)}
.kpi-foot{margin-top:16px;font-size:12px;color:var(--ink-3)}

/* ---------- Scene ---------- */
.scene-grid{display:grid;grid-template-columns:0.9fr 1.1fr;gap:40px;align-items:start}
.scene-figure{position:relative;margin:0;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--bg-2);box-shadow:var(--shadow)}
.scene-figure img{width:100%;aspect-ratio:16/13;object-fit:cover}
.scene-figure figcaption{position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;color:#fff;background:linear-gradient(to top,rgba(18,51,43,.86),rgba(18,51,43,0))}
.scene-item{display:grid;grid-template-columns:52px 1fr;gap:16px;padding:22px 0;border-top:1px solid var(--line)}
.scene-item:first-child{border-top:0;padding-top:0}
.scene-item .n{font-family:var(--mono);font-size:13px;color:var(--accent);padding-top:4px}
.scene-item h3{font-size:18px;line-height:1.45}
.scene-item p{margin-top:8px;font-size:15px;line-height:1.8;color:var(--ink-2)}
.scene-item .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

/* ---------- Compare ---------- */
.compare{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden}
.compare-head,.compare-row{display:grid;grid-template-columns:1.1fr 1.7fr 1.2fr;gap:20px;align-items:center;padding:16px 24px}
.compare-head{background:var(--brand-deep);color:#fff;font-size:13px;font-weight:600;letter-spacing:.04em;padding-top:14px;padding-bottom:14px}
.compare-row{border-top:1px solid var(--line);min-height:64px;transition:background-color .18s ease-out}
.compare-row:hover{background:var(--bg)}
.cmp-scene strong{display:block;font-size:16px;font-weight:700;color:var(--ink)}
.cmp-scene em{display:block;font-style:normal;font-size:12px;color:var(--ink-3);margin-top:4px}
.cmp-ind{font-size:14px;line-height:1.7;color:var(--ink-2)}
.cmp-val{display:flex;align-items:center;gap:12px}
.bar{position:relative;flex:1;height:8px;border-radius:999px;background:var(--bg-2);overflow:hidden}
.bar i{display:block;height:100%;border-radius:999px;background:var(--accent)}
.cmp-val b{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--brand);min-width:42px;text-align:right}
.compare-foot{padding:14px 24px;border-top:1px solid var(--line);background:var(--bg);font-size:12px;color:var(--ink-3)}

/* ---------- Flow ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow);overflow:hidden}
.flow-step{padding:28px 24px;border-left:1px solid var(--line)}
.flow-step:first-child{border-left:0}
.flow-idx{font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--accent)}
.flow-step h3{margin-top:12px;font-size:17px}
.flow-step p{margin-top:10px;font-size:14px;line-height:1.75;color:var(--ink-2)}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:20px;width:100%;padding:20px 0;text-align:left;font-size:16px;font-weight:600;color:var(--ink);transition:color .18s ease-out}
.faq-q:hover{color:var(--brand)}
.faq-icon{position:relative;flex:0 0 20px;width:20px;height:20px;border-radius:50%;border:1px solid var(--line);transition:transform .2s ease-out,border-color .2s ease-out,background-color .2s ease-out}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;left:50%;top:50%;background:var(--brand);transform:translate(-50%,-50%);transition:opacity .2s ease-out,background-color .2s ease-out}
.faq-icon::before{width:10px;height:1.5px}
.faq-icon::after{width:1.5px;height:10px}
.faq-item.is-open .faq-icon{transform:rotate(180deg);background:var(--accent-soft);border-color:var(--accent-soft)}
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{background:var(--accent-deep)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .22s ease-out}
.faq-a p{padding:0 0 22px;font-size:15px;line-height:1.85;color:var(--ink-2);max-width:820px}

/* ---------- CTA ---------- */
.cta-band{position:relative;padding:64px 0;background:var(--brand-deep);color:#fff;overflow:hidden}
.cta-band::after{content:"";position:absolute;inset:0;opacity:.08;background-image:url("/assets/images/backpic/back-2.webp");background-size:cover;background-position:center;pointer-events:none}
.cta-inner{position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#fff;font-size:28px;line-height:1.35;max-width:640px}
.cta-inner p{margin-top:12px;font-size:15px;color:rgba(255,255,255,.78);max-width:640px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:22px;font-size:13px;color:rgba(255,255,255,.66)}
.cta-meta span strong{color:#fff;font-weight:600}

/* ---------- Footer ---------- */
.site-footer{background:var(--brand-deep);color:rgba(255,255,255,.78);padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo-text strong{color:#fff;font-size:15px}
.footer-brand .logo-text em{color:rgba(255,255,255,.58)}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.7);max-width:340px}
.contact-mini{display:flex;flex-direction:column;gap:6px;margin-top:16px;font-size:13px;color:rgba(255,255,255,.62)}
.contact-mini strong{color:#fff;font-weight:600}
.site-footer h4{color:#fff;font-size:14px;letter-spacing:.04em;margin-bottom:16px}
.footer-col li{margin-bottom:10px;font-size:14px;color:rgba(255,255,255,.7)}
.footer-col a{display:inline-block;color:rgba(255,255,255,.78);transition:color .18s ease-out,transform .18s ease-out}
.footer-col a:hover{color:var(--c-amber);text-decoration:none;transform:translateX(2px)}
.footer-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.14);padding:20px 0;font-size:12px;color:rgba(255,255,255,.55)}
.to-top{width:38px;height:38px;border-radius:50%;border:1px solid rgba(255,255,255,.35);color:#fff;display:inline-flex;align-items:center;justify-content:center;transition:border-color .18s ease-out,color .18s ease-out,transform .18s ease-out}
.to-top:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}

/* ---------- Responsive ---------- */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-col:last-child{grid-column:1 / -1}
}
@media (max-width:1023px){
  .section{padding:72px 0}
  .scene-grid{grid-template-columns:1fr}
  .scene-figure img{aspect-ratio:16/9}
  .flow{grid-template-columns:repeat(2,1fr)}
  .flow-step:nth-child(3){border-left:0}
  .flow-step:nth-child(n+3){border-top:1px solid var(--line)}
  .compare-head,.compare-row{grid-template-columns:1fr 1.5fr 1fr}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .main-nav{position:fixed;top:var(--nav-h);left:0;right:0;bottom:0;flex-direction:column;align-items:stretch;gap:0;padding:16px 20px 48px;background:var(--bg);overflow-y:auto;transform:translateX(100%);visibility:hidden;transition:transform .22s ease-out,visibility .22s ease-out}
  .main-nav.is-open{transform:none;visibility:visible}
  .nav-link{height:56px;font-size:17px;padding:0;border-radius:0;border-bottom:1px solid var(--line);color:var(--ink)}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{color:var(--brand)}
  .nav-sep{display:none}
  .nav-cta{display:none}
  .nav-drawer-foot{display:block;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
  .nav-drawer-foot .btn{width:100%}
  .nav-drawer-foot p{margin-top:12px;font-size:13px;color:var(--ink-3)}
  body.nav-locked{overflow:hidden}
}
@media (max-width:900px){
  .kpi{grid-template-columns:repeat(2,1fr)}
  .kpi-cell:nth-child(3){border-left:0}
  .kpi-cell:nth-child(n+3){border-top:1px solid var(--line)}
}
@media (max-width:767px){
  :root{--nav-h:60px}
  .container{padding:0 20px}
  .section{padding:56px 0}
  .page-hero{padding:36px 0 44px}
  .page-hero h1{font-size:30px}
  .hero-lead{font-size:16px}
  .section-head{flex-direction:column;align-items:flex-start;gap:12px;margin-bottom:24px}
  .section-head h2{font-size:24px}
  .hero-actions .btn,.cta-actions .btn{width:100%}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner h2{font-size:23px}
  .compare-head{display:none}
  .compare-row{grid-template-columns:1fr;gap:12px;padding:20px}
  .cmp-val{justify-content:space-between}
  .cmp-val b{min-width:48px}
  .flow{grid-template-columns:1fr}
  .flow-step{border-left:0}
  .flow-step:nth-child(n+2){border-top:1px solid var(--line)}
  .scene-item{grid-template-columns:40px 1fr;gap:12px}
  .footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:32px}
  .footer-col:last-child{grid-column:auto}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:12px}
  .to-top{align-self:flex-end}
}
@media (max-width:520px){
  .kpi{grid-template-columns:1fr}
  .kpi-cell{border-left:0}
  .kpi-cell:nth-child(n+2){border-top:1px solid var(--line)}
  .trust-row{gap:14px}
  .logo-text strong{font-size:14px}
  .logo-text em{font-size:10px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}