/* roulang page: index */
:root{
  --brand:#0F3B34;
  --brand-deep:#08251F;
  --accent:#FF5A1F;
  --ink:#141715;
  --ink-2:#5A625E;
  --line:#E2E0D8;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --muted:#6B8F84;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(15,59,52,.06);
  --shadow-2:0 14px 36px -14px rgba(15,59,52,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec-pad:112px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;}
ul,ol{padding:0;list-style:none;}
:focus-visible{outline:3px solid rgba(255,90,31,.28);outline-offset:2px;}
.num{font-variant-numeric:tabular-nums;}

.shell{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1600px){ .shell{max-width:1280px;} }

/* ============ 按钮 ============ */
.btn-solid,.btn-ghost,.btn-text{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  font-weight:600;letter-spacing:.01em;
  transition:background-color 220ms var(--ease),color 220ms var(--ease),transform 220ms var(--ease),border-color 220ms var(--ease);
  cursor:pointer;
}
.btn-solid{
  height:48px;padding:0 28px;border-radius:10px;border:1px solid var(--accent);
  background:var(--accent);color:#0B1F1A;
}
.btn-solid:hover{background:var(--brand);border-color:var(--brand);color:#fff;transform:translateY(-1px);}
.btn-ghost{
  height:48px;padding:0 26px;border-radius:10px;border:1px solid var(--brand);
  background:transparent;color:var(--brand-deep);
}
.btn-ghost:hover{background:rgba(15,59,52,.08);}
.btn-text{
  border:0;background:none;padding:0;color:var(--brand);
  position:relative;font-weight:600;
}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:100%;
  background:currentColor;transform:scaleX(0);transform-origin:left;
  transition:transform 220ms var(--ease);
}
.btn-text:hover::after{transform:scaleX(1);}
.btn-text:hover{color:var(--accent);}

/* ============ 徽章 ============ */
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);border:1px solid rgba(15,59,52,.35);
  background:rgba(15,59,52,.06);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1;
}
.chip-plain{border-color:var(--line);background:var(--surface);color:var(--ink-2);font-weight:500;}

/* ============ 头部导航 ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1040;
  height:72px;
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:height 260ms var(--ease),border-color 260ms var(--ease),background-color 260ms var(--ease);
}
.site-header.is-shrink{height:64px;border-bottom:1px solid var(--line);}
.header-inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:28px;height:28px;flex:0 0 28px;border-radius:9px;
  background:var(--brand);position:relative;overflow:hidden;
}
.brand-mark::before,
.brand-mark::after{content:"";position:absolute;background:var(--accent);}
.brand-mark::before{left:6px;top:13px;width:16px;height:2px;}
.brand-mark::after{left:13px;top:6px;width:2px;height:16px;opacity:.5;}
.brand-text{font-size:17px;letter-spacing:-.01em;color:var(--brand-deep);white-space:nowrap;}
.brand-text b{font-weight:800;}
.brand-text span{font-weight:400;color:var(--ink-2);}

.nav-links{display:flex;align-items:center;gap:30px;}
.nav-links a{
  position:relative;font-size:15px;font-weight:500;color:var(--ink-2);
  padding:6px 0;transition:color 200ms var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:60%;
  background:var(--accent);transform:translateX(-50%) scaleX(0);
  transform-origin:left;transition:transform 200ms var(--ease);
}
.nav-links a:hover{color:var(--brand-deep);}
.nav-links a:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-links a.active{color:var(--brand-deep);font-weight:700;}
.nav-links a.active::after{transform:translateX(-50%) scaleX(1);}

.nav-toggle{
  display:none;width:42px;height:42px;border:0;background:transparent;
  align-items:center;justify-content:center;cursor:pointer;position:relative;
}
.nav-toggle i{display:block;width:22px;height:1.5px;background:var(--brand-deep);position:relative;}
.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:0;width:22px;height:1.5px;background:var(--brand-deep);
}
.nav-toggle i::before{top:-7px;}
.nav-toggle i::after{top:7px;}

.drawer{
  position:fixed;inset:0;z-index:1050;background:rgba(15,59,52,.96);
  display:flex;flex-direction:column;justify-content:center;
  padding:88px 32px 48px;
  opacity:0;visibility:hidden;transition:opacity 260ms var(--ease),visibility 260ms var(--ease);
}
.drawer.open{opacity:1;visibility:visible;}
.drawer a{
  color:#fff;font-size:24px;font-weight:600;padding:18px 0;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.drawer a:first-of-type{border-top:1px solid rgba(255,255,255,.14);}
.drawer a:hover{color:var(--accent);}
.drawer-close{
  position:absolute;top:22px;right:22px;width:44px;height:44px;
  border:1px solid rgba(255,255,255,.35);border-radius:50%;
  background:transparent;display:flex;align-items:center;justify-content:center;cursor:pointer;
}
.drawer-close i{position:relative;width:20px;height:20px;display:block;}
.drawer-close i::before,.drawer-close i::after{
  content:"";position:absolute;left:0;top:9px;width:20px;height:1.5px;background:#fff;
}
.drawer-close i::before{transform:rotate(45deg);}
.drawer-close i::after{transform:rotate(-45deg);}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  padding:150px 0 0;
  background:var(--bg);
}
.hero-lines{
  position:absolute;inset:0;pointer-events:none;opacity:.09;
  background-image:linear-gradient(115deg,transparent 0 49.6%,var(--brand) 49.6% 49.9%,transparent 49.9% 100%),
                   linear-gradient(115deg,transparent 0 66%,var(--brand) 66% 66.2%,transparent 66.2% 100%);
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:center;
}
.hero-copy{max-width:600px;}
.hero-eyebrow{margin-bottom:20px;}
.hero h1{
  font-size:56px;line-height:1.22;font-weight:800;letter-spacing:-.01em;
  color:var(--brand-deep);
}
.hero-sub{
  margin-top:20px;font-size:17px;line-height:1.85;color:var(--ink-2);max-width:520px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-visual{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  aspect-ratio:4/3;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  box-shadow:var(--shadow-1);
}
.hero-visual::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(8,37,31,.55),rgba(8,37,31,.65));
}
.hero-visual-inner{
  position:absolute;inset:0;padding:28px;display:flex;flex-direction:column;justify-content:space-between;
  color:#fff;
}
.hero-visual-label{
  font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:rgba(255,255,255,.72);
}
.hero-visual-title{font-size:20px;font-weight:700;margin-top:10px;color:#fff;}
.hero-visual-list{
  margin-top:auto;display:flex;flex-direction:column;gap:10px;
}
.hero-visual-list li{
  display:flex;justify-content:space-between;gap:16px;
  font-size:13.5px;color:rgba(255,255,255,.82);
  padding-top:10px;border-top:1px solid rgba(255,255,255,.22);
}
.hero-visual-list b{color:#fff;font-weight:700;}

.hero-metrics{
  position:relative;
  margin-top:76px;padding:26px 0;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;
}
.hero-metrics li{
  flex:1 1 0;min-width:170px;padding:0 24px;
  border-left:1px solid var(--line);
}
.hero-metrics li:first-child{border-left:0;padding-left:0;}
.hero-metrics .k{display:block;font-size:13.5px;color:var(--ink-2);}
.hero-metrics .v{display:block;font-size:19px;font-weight:700;color:var(--brand);margin-top:2px;}

/* ============ 通用板块 ============ */
.section{padding:var(--sec-pad) 0;}
.section-white{background:var(--surface);}
.section-head{max-width:720px;margin-bottom:52px;}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--muted);
  text-transform:uppercase;margin-bottom:16px;
}
.section-eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);}
h2.section-title{
  font-size:36px;line-height:1.3;font-weight:800;letter-spacing:-.01em;color:var(--brand-deep);
}
.section-desc{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:640px;}

/* ============ 指标看板 ============ */
.board{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:8px 0;position:relative;overflow:hidden;
}
.board::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:24%;background:var(--accent);
}
.board-grid{display:grid;grid-template-columns:repeat(4,1fr);}
.board-item{
  padding:38px 32px;border-left:1px solid var(--line);
}
.board-item:first-child{border-left:0;}
.board-num{
  display:flex;align-items:baseline;gap:6px;
  font-size:64px;font-weight:800;line-height:1;color:var(--brand);letter-spacing:-.02em;
}
.board-num em{font-style:normal;font-size:18px;font-weight:700;color:var(--accent);}
.board-label{margin-top:12px;font-size:14px;color:var(--ink-2);}

/* ============ 服务矩阵 ============ */
.matrix{display:grid;grid-template-columns:1fr 3fr;gap:48px;}
.matrix-tabs{display:flex;flex-direction:column;gap:6px;}
.matrix-tabs button{
  display:flex;align-items:center;gap:12px;
  background:none;border:0;border-left:2px solid transparent;
  padding:12px 0 12px 16px;text-align:left;cursor:pointer;
  font-size:15px;color:var(--ink-2);font-weight:500;
  transition:color 200ms var(--ease),border-color 200ms var(--ease);
}
.matrix-tabs button::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--line);flex:0 0 7px;
  transition:background-color 200ms var(--ease);
}
.matrix-tabs button:hover{color:var(--brand-deep);}
.matrix-tabs button.active{color:var(--brand-deep);font-weight:700;border-left-color:var(--accent);}
.matrix-tabs button.active::before{background:var(--accent);}

.matrix-rows{border-top:1px solid var(--line);}
.matrix-row{
  display:grid;grid-template-columns:56px 1fr auto;align-items:center;gap:20px;
  padding:26px 20px 26px 12px;border-bottom:1px solid var(--line);
  background:transparent;
  transition:background-color 240ms var(--ease),transform 240ms var(--ease);
}
.matrix-row:hover{background:var(--surface);transform:translateX(4px);}
.matrix-row .idx{
  font-size:14px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums;
}
.matrix-row h3{font-size:20px;font-weight:700;color:var(--brand-deep);line-height:1.5;}
.matrix-row p{margin-top:6px;font-size:14px;color:var(--ink-2);line-height:1.75;}
.matrix-row .arrow{
  font-size:14px;color:var(--muted);transition:color 240ms var(--ease),transform 240ms var(--ease);
}
.matrix-row:hover .arrow{color:var(--accent);transform:translateX(4px);}

/* ============ 对比 ============ */
.compare-lead{
  font-size:20px;line-height:1.7;color:var(--brand-deep);font-weight:600;
  max-width:760px;margin-bottom:48px;
}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:0;position:relative;}
.compare-col{padding:0 40px;}
.compare-col:first-child{padding-left:0;}
.compare-col:last-child{padding-right:0;border-left:1px dashed var(--line);}
.compare-col h3{
  font-size:15px;font-weight:700;letter-spacing:.08em;color:var(--muted);margin-bottom:26px;
}
.compare-col h3 strong{color:var(--brand);}
.cmp-item{margin-bottom:28px;}
.cmp-top{display:flex;justify-content:space-between;gap:14px;font-size:14.5px;margin-bottom:10px;}
.cmp-top span{color:var(--ink-2);}
.cmp-top b{font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums;}
.bar{height:6px;border-radius:var(--r-pill);background:var(--line);overflow:hidden;}
.bar i{
  display:block;height:100%;width:0;border-radius:var(--r-pill);
  background:var(--brand);
  transition:width 600ms var(--ease);
}
.compare-col:first-child .bar i{background:#CFCEC6;}
.compare-col:last-child .cmp-top b{color:var(--brand);}

/* ============ 最新信息 ============ */
.news-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  margin-bottom:44px;flex-wrap:wrap;
}
.cms-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.cms-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform 260ms var(--ease),box-shadow 260ms var(--ease),border-color 260ms var(--ease);
}
.cms-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(15,59,52,.2);}
.cms-card:hover h3{color:var(--brand);}
.cms-thumb{
  aspect-ratio:16/10;overflow:hidden;background:var(--bg);
}
.cms-thumb img{width:100%;height:100%;object-fit:cover;}
.cms-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.cms-card h3{
  font-size:18px;font-weight:700;line-height:1.55;color:var(--brand-deep);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color 220ms var(--ease);
}
.cms-card p{
  font-size:14px;color:var(--ink-2);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.cms-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--ink-2);
}
.cms-meta i{color:var(--accent);font-size:12px;transition:transform 220ms var(--ease);}
.cms-card:hover .cms-meta i{transform:translateX(3px);}
.empty-state{
  grid-column:1/-1;
  border:1px solid var(--line);border-radius:var(--r-md);
  padding:56px 24px;text-align:center;color:var(--ink-2);font-size:14.5px;
  background:var(--surface);
}
.empty-state i{display:block;font-size:22px;color:var(--muted);margin-bottom:12px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item:first-child{border-top:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;
  display:grid;grid-template-columns:48px 1fr 32px;align-items:center;gap:16px;
  padding:26px 0;text-align:left;
}
.faq-q .idx{
  font-size:14px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums;
  transition:color 220ms var(--ease);
}
.faq-q .qt{font-size:18px;font-weight:600;color:var(--brand-deep);line-height:1.6;}
.faq-sign{position:relative;width:16px;height:16px;justify-self:end;}
.faq-sign::before,.faq-sign::after{
  content:"";position:absolute;background:var(--brand);transition:transform 260ms var(--ease),background-color 260ms var(--ease);
}
.faq-sign::before{left:0;top:7.5px;width:16px;height:1.5px;}
.faq-sign::after{left:7.5px;top:0;width:1.5px;height:16px;}
.faq-item.open .faq-sign::after{transform:scaleY(0);}
.faq-item.open .faq-sign::before{background:var(--accent);}
.faq-item.open .idx{color:var(--accent);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 300ms var(--ease);
}
.faq-a-inner{
  padding:0 48px 26px 64px;font-size:15px;line-height:1.85;color:var(--ink-2);
}

/* ============ 转化表单 ============ */
.contact-grid{display:grid;grid-template-columns:1fr 2fr;gap:48px;align-items:start;}
.contact-aside h2{font-size:30px;font-weight:800;line-height:1.35;color:var(--brand-deep);}
.contact-aside p{margin-top:16px;font-size:15px;color:var(--ink-2);}
.contact-note{
  margin-top:26px;padding-top:20px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.form-panel{
  background:var(--surface);border-radius:var(--r-lg);padding:40px;
  border:1px solid var(--line);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.field{margin-bottom:26px;}
.field label{
  display:block;font-size:13px;font-weight:600;color:var(--ink-2);margin-bottom:8px;
}
.field input,.field select,.field textarea{
  width:100%;border:0;border-bottom:1px solid var(--line);border-radius:0;
  background:transparent;padding:10px 2px;font-size:15px;
  transition:border-color 220ms var(--ease);
}
.field textarea{resize:vertical;min-height:88px;line-height:1.75;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-bottom:2px solid var(--brand);
}
.field input::placeholder,.field textarea::placeholder{color:#A9B2AE;}
.form-msg{
  margin-top:18px;font-size:14px;color:var(--brand);font-weight:600;
  display:none;
}
.form-msg.show{display:block;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--brand);color:#fff;position:relative;padding:80px 0 0;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;height:1px;width:40%;background:rgba(255,90,31,.6);
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;
}
.footer-brand .brand-text{color:#fff;font-size:18px;}
.footer-brand p{margin-top:18px;font-size:13.5px;color:#B9CBC5;max-width:280px;line-height:1.8;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:13.5px;color:#B9CBC5;transition:color 200ms var(--ease),transform 200ms var(--ease);display:inline-block;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  margin-top:60px;border-top:1px solid rgba(255,255,255,.16);
  padding:24px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#9FB6AF;
}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity 600ms var(--ease),transform 600ms var(--ease);}
.reveal.visible{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sec-pad:96px;}
  .hero h1{font-size:48px;}
  h2.section-title{font-size:32px;}
  .board-num{font-size:56px;}
}
@media (max-width:991px){
  :root{--sec-pad:80px;}
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .hero{padding-top:120px;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-copy{max-width:none;}
  .hero h1{font-size:38px;}
  .hero-visual{aspect-ratio:16/10;}
  .hero-metrics{margin-top:56px;}
  .hero-metrics li{flex:1 1 50%;padding:16px 20px;}
  .hero-metrics li:nth-child(3){border-left:0;padding-left:0;}
  .board-grid{grid-template-columns:repeat(2,1fr);}
  .board-item:nth-child(3){border-left:0;}
  .board-item{border-top:1px solid var(--line);}
  .board-item:nth-child(1),.board-item:nth-child(2){border-top:0;}
  .matrix{grid-template-columns:1fr;gap:32px;}
  .matrix-tabs{flex-direction:row;flex-wrap:wrap;gap:8px;}
  .matrix-tabs button{border-left:0;border-bottom:2px solid transparent;padding:8px 14px 8px 0;}
  .matrix-tabs button.active{border-bottom-color:var(--accent);}
  .compare{grid-template-columns:1fr;}
  .compare-col{padding:0;}
  .compare-col:last-child{border-left:0;border-top:1px dashed var(--line);padding-top:32px;margin-top:8px;}
  .cms-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  :root{--sec-pad:64px;}
  .shell{padding:0 20px;}
  .hero h1{font-size:34px;}
  .hero-sub{font-size:15.5px;}
  h2.section-title{font-size:26px;}
  .compare-lead{font-size:18px;}
  .board-num{font-size:40px;}
  .board-item{padding:28px 24px;}
  .cms-grid{grid-template-columns:1fr;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .form-panel{padding:28px 22px;border-radius:var(--r-md);}
  .faq-q{grid-template-columns:34px 1fr 24px;gap:12px;padding:22px 0;}
  .faq-q .qt{font-size:16.5px;}
  .faq-a-inner{padding:0 0 22px 46px;}
  .matrix-row{grid-template-columns:38px 1fr;gap:14px;padding:20px 8px 20px 0;}
  .matrix-row .arrow{display:none;}
  .hero-visual-inner{padding:20px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:575px){
  .hero-metrics li{flex:1 1 100%;border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:14px;padding-bottom:14px;}
  .hero-metrics li:first-child{border-top:0;padding-top:0;}
  .board-grid{grid-template-columns:1fr;}
  .board-item{border-left:0;border-top:1px solid var(--line);}
  .board-item:first-child{border-top:0;}
  .hero-actions .btn-solid,.hero-actions .btn-ghost{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (hover:none){
  .cms-card:hover,.matrix-row:hover,.btn-solid:hover{transform:none;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .reveal{opacity:1;transform:none;}
  .bar i{transition:none;}
}

/* roulang page: article */
:root{
  --brand:#0F3B34;
  --brand-deep:#08251F;
  --accent:#FF5A1F;
  --ink:#141715;
  --ink-2:#5A625E;
  --muted:#6B8F84;
  --line:#E2E0D8;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(15,59,52,.06);
  --sh-2:0 14px 36px -14px rgba(15,59,52,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;color:var(--ink);}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
@media (min-width:1600px){.shell{max-width:1280px;}}
::selection{background:rgba(255,90,31,.18);}
a:focus-visible,button:focus-visible{outline:3px solid rgba(255,90,31,.28);outline-offset:2px;border-radius:6px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 20px -18px rgba(15,59,52,.5);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;transition:height .26s var(--ease);}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:12px;}
.brand-mark{position:relative;width:26px;height:26px;border:2px solid var(--brand);border-radius:8px;flex:0 0 auto;}
.brand-mark::after{content:"";position:absolute;right:-4px;bottom:-4px;width:10px;height:10px;border-radius:50%;background:var(--accent);}
.brand-text{font-size:19px;line-height:1;color:var(--ink);letter-spacing:-.01em;display:inline-flex;align-items:baseline;}
.brand-text b{font-weight:800;}
.brand-text span{font-weight:400;color:var(--ink-2);margin-left:2px;}
.nav-links{display:flex;align-items:center;}
.nav-links a{
  position:relative;display:inline-block;margin-left:34px;padding:8px 0;
  font-size:15px;color:var(--ink);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;width:0;height:2px;
  background:var(--accent);transform:translateX(-50%);
  transition:width .2s var(--ease);
}
.nav-links a:hover::after{width:60%;}
.nav-links a.active{font-weight:700;}
.nav-links a.active::after{width:60%;}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-sm);
  background:transparent;cursor:pointer;
}
.nav-toggle i{display:block;width:20px;height:2px;background:var(--brand);position:relative;}
.nav-toggle i::before,.nav-toggle i::after{content:"";position:absolute;left:0;width:20px;height:2px;background:var(--brand);}
.nav-toggle i::before{top:-6px;}
.nav-toggle i::after{top:6px;}

/* ---------- mobile drawer ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:90;
  background:rgba(15,59,52,.95);
  backdrop-filter:blur(3px);
  display:flex;flex-direction:column;
  padding:26px 24px 40px;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .26s var(--ease),transform .26s var(--ease),visibility .26s;
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:translateY(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid rgba(255,255,255,.16);}
.drawer-head .brand-text,.drawer-head .brand-text b{color:#fff;font-size:18px;}
.drawer-head .brand-text span{color:#B9CBC5;}
.drawer-close{
  width:44px;height:44px;background:transparent;border:0;position:relative;cursor:pointer;
}
.drawer-close::before,.drawer-close::after{
  content:"";position:absolute;left:12px;top:21px;width:20px;height:1.5px;background:#fff;
}
.drawer-close::before{transform:rotate(45deg);}
.drawer-close::after{transform:rotate(-45deg);}
.drawer-nav{display:flex;flex-direction:column;margin-top:12px;}
.drawer-nav a{
  color:#fff;font-size:24px;font-weight:600;padding:20px 0;
  border-bottom:1px solid rgba(255,255,255,.14);
}
.drawer-nav a:active{color:var(--accent);}
.drawer-note{margin:28px 0 0;color:#B9CBC5;font-size:14px;line-height:1.8;}

/* ---------- page hero ---------- */
.page-hero{
  position:relative;color:#fff;
  padding:52px 0 46px;
  background-image:linear-gradient(rgba(8,37,31,.78),rgba(8,37,31,.72)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(115deg,rgba(255,255,255,.10) 0 1px,transparent 1px 100%);
  background-size:220px 220px;opacity:.5;
}
.page-hero .shell{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68);margin-bottom:22px;}
.crumb a{color:rgba(255,255,255,.68);}
.crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
.crumb .sep{opacity:.5;}
.crumb .now{color:#fff;}
.page-hero h1{
  color:#fff;font-size:40px;line-height:1.32;font-weight:800;
  max-width:900px;margin-bottom:20px;
}
.hero-meta{display:flex;flex-wrap:wrap;align-items:center;font-size:14px;color:rgba(255,255,255,.8);}
.badge-cat{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border:1px solid rgba(255,255,255,.5);border-radius:var(--r-pill);
  font-size:13px;color:#fff;background:rgba(255,255,255,.08);
}
.meta-sep{display:inline-block;width:1px;height:12px;background:rgba(255,255,255,.35);margin:0 14px;}

/* ---------- article layout ---------- */
.article-wrap{padding:56px 0 72px;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:64px;align-items:start;}
.article-body{max-width:760px;}
.prose{font-size:16px;line-height:1.9;color:var(--ink);}
.prose p{margin:0 0 20px;}
.prose h2{
  position:relative;font-size:24px;font-weight:700;line-height:1.45;
  margin:48px 0 12px;padding-left:14px;
}
.prose h2::before{
  content:"";position:absolute;left:0;top:7px;bottom:7px;width:3px;
  background:var(--accent);border-radius:2px;
}
.prose h3{font-size:19px;font-weight:700;margin:32px 0 10px;}
.prose h4{font-size:17px;font-weight:700;margin:26px 0 8px;}
.prose ul,.prose ol{margin:0 0 20px;}
.prose li{position:relative;padding-left:20px;line-height:1.85;margin-bottom:8px;}
.prose li::before{
  content:"";position:absolute;left:0;top:.82em;width:10px;height:2px;
  background:var(--accent);border-radius:2px;
}
.prose ol{counter-reset:li;}
.prose ol li::before{
  content:counter(li);counter-increment:li;
  width:auto;height:auto;background:none;color:var(--brand);
  font-weight:700;font-size:14px;top:0;
}
.prose blockquote{
  margin:26px 0;padding:16px 22px;
  border-left:3px solid var(--brand);background:var(--bg);
  border-radius:0 var(--r-sm) var(--r-sm) 0;color:var(--ink-2);
}
.prose blockquote p:last-child{margin-bottom:0;}
.prose img{border-radius:var(--r-md);margin:10px 0 12px;}
.prose figure{margin:24px 0;}
.prose figcaption{font-size:13px;color:var(--ink-2);text-align:center;margin-top:10px;}
.prose pre{
  background:var(--brand-deep);color:#D6E4E0;padding:18px 20px;
  border-radius:var(--r-sm);overflow:auto;font-size:14px;line-height:1.7;
}
.prose code{background:rgba(15,59,52,.07);padding:2px 6px;border-radius:4px;font-size:14px;}
.prose pre code{background:none;padding:0;}
.prose a{color:var(--brand);border-bottom:1px solid rgba(15,59,52,.35);}
.prose a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;}
.prose th,.prose td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left;}
.prose th{font-weight:700;color:var(--brand);}
.prose hr{border:0;border-top:1px solid var(--line);margin:40px 0;}

/* ---------- sidebar ---------- */
.article-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);padding:22px;}
.side-card h3{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--brand);}
.side-toc a{
  display:block;font-size:14px;color:var(--ink-2);padding:8px 0;
  border-bottom:1px dashed var(--line);transition:color .2s var(--ease),transform .2s var(--ease);
}
.side-toc a:last-child{border-bottom:0;}
.side-toc a:hover{color:var(--brand);transform:translateX(3px);}
.side-list a{
  display:block;font-size:14px;color:var(--ink);padding:9px 0;
  border-bottom:1px solid var(--line);transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.side-list a:last-child{border-bottom:0;padding-bottom:0;}
.side-list a:hover{color:var(--accent);padding-left:5px;}
.side-note{font-size:13.5px;color:var(--ink-2);line-height:1.8;margin:0;}

/* ---------- empty state ---------- */
.empty-state{
  text-align:center;padding:64px 24px;background:var(--surface);
  border:1px dashed var(--line);border-radius:var(--r-md);
}
.empty-state i{font-size:26px;color:var(--muted);}
.empty-state h2{font-size:22px;margin:18px 0 10px;}
.empty-state p{color:var(--ink-2);margin:0 0 22px;}

/* ---------- article foot ---------- */
.article-foot{padding:0 0 80px;}
.foot-bar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:22px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  margin-bottom:40px;
}
.link-back{display:inline-flex;align-items:center;gap:10px;font-size:15px;font-weight:600;color:var(--brand);}
.link-back:hover{color:var(--accent);}
.link-back:hover i{transform:translateX(-3px);}
.link-back i{transition:transform .2s var(--ease);}
.foot-note{font-size:13.5px;color:var(--ink-2);}
.reco-title{font-size:20px;font-weight:700;margin-bottom:22px;}
.reco-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;}
.reco-card{
  display:flex;gap:14px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:14px;transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.reco-card img{width:88px;height:70px;object-fit:cover;border-radius:10px;flex:0 0 auto;}
.reco-card h3{font-size:16px;line-height:1.5;margin-bottom:8px;color:var(--ink);transition:color .2s var(--ease);}
.reco-card time{font-size:13px;color:var(--ink-2);}
.reco-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(15,59,52,.2);}
.reco-card:hover h3{color:var(--brand);}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand);color:#fff;padding:64px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:34px;flex-wrap:wrap;}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-band p{color:#B9CBC5;margin:0;max-width:640px;font-size:15px;line-height:1.85;}
.btn-accent{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 28px;border-radius:10px;border:0;
  background:var(--accent);color:#0B1F1A;font-weight:600;font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn-accent:hover{background:var(--brand-deep);color:#fff;transform:translateY(-1px);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:10px;
  border:1px solid var(--brand);color:var(--brand);background:transparent;
  font-weight:600;font-size:15px;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{background:rgba(15,59,52,.08);transform:translateY(-1px);}
.cta-band .btn-ghost{border-color:rgba(255,255,255,.55);color:#fff;}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.12);}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--brand);color:#B9CBC5;}
.site-footer::before{content:"";position:absolute;top:0;left:0;height:1px;width:40%;background:rgba(255,90,31,.4);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding:64px 0 40px;}
.footer-brand .brand-text{color:#fff;font-size:19px;margin-bottom:16px;display:inline-flex;}
.footer-brand p{font-size:13.5px;line-height:1.85;margin:0;max-width:320px;color:#B9CBC5;}
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:16px;}
.footer-col a{display:inline-block;font-size:13.5px;color:#B9CBC5;padding:5px 0;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  border-top:1px solid rgba(255,255,255,.12);
  padding:20px 0 32px;font-size:13px;color:#9FB6AF;
}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:40px;}
  .article-side{position:static;}
  .article-body{max-width:100%;}
}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:flex;}
  .page-hero{padding:44px 0 38px;}
  .page-hero h1{font-size:30px;}
  .article-wrap{padding:44px 0 56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 32px;}
}
@media (max-width:767.98px){
  .shell{padding:0 20px;}
  .page-hero h1{font-size:26px;}
  .prose h2{font-size:21px;margin-top:40px;}
  .prose h3{font-size:18px;}
  .reco-grid{grid-template-columns:1fr;}
  .reco-card img{width:96px;height:74px;}
  .cta-band{padding:52px 0;}
  .cta-band h2{font-size:23px;}
  .btn-accent,.btn-ghost{width:100%;}
  .cta-inner{gap:24px;}
}
@media (max-width:575.98px){
  .brand-text{font-size:17px;}
  .page-hero{padding:36px 0 32px;}
  .hero-meta{font-size:13.5px;}
  .meta-sep{margin:0 10px;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .prose li{line-height:1.9;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important;}
  html{scroll-behavior:auto;}
}

/* roulang page: category1 */
:root{
  --brand:#0F3B34;
  --brand-deep:#08251F;
  --accent:#FF5A1F;
  --ink:#141715;
  --ink-2:#5A625E;
  --line:#E2E0D8;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --muted:#6B8F84;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:24px;
  --r-pill:999px;
  --sh:0 1px 2px rgba(15,59,52,.06);
  --sh-hover:0 14px 36px -14px rgba(15,59,52,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t-fast:200ms;
  --t-mid:260ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
::selection{background:rgba(255,90,31,.18);}
:focus-visible{outline:3px solid rgba(255,90,31,.35);outline-offset:2px;}

.shell{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (min-width:1600px){.shell{max-width:1280px;}}
@media (max-width:575.98px){.shell{padding-left:20px;padding-right:20px;}}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  transition:height var(--t-mid) var(--ease),border-color var(--t-mid) var(--ease),box-shadow var(--t-mid) var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.is-scrolled{height:64px;border-bottom-color:var(--line);box-shadow:0 6px 20px -18px rgba(15,59,52,.5);}
.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:22px;height:22px;border-radius:6px;background:var(--brand);
  position:relative;flex:0 0 auto;
}
.brand-mark::after{
  content:"";position:absolute;left:6px;top:6px;width:10px;height:10px;
  border:1.5px solid var(--accent);border-right-color:transparent;border-bottom-color:transparent;
  border-radius:2px;transform:rotate(45deg);
}
.brand-text{display:flex;align-items:baseline;gap:3px;font-size:17px;letter-spacing:-.01em;}
.brand-text b{font-weight:800;color:var(--brand);}
.brand-text span{font-weight:400;color:var(--ink-2);}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;
  transition:color var(--t-fast) var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:50%;bottom:0;height:2px;width:0;
  background:var(--accent);transform:translateX(-50%);
  transition:width var(--t-fast) var(--ease);
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--brand);font-weight:600;}
.nav-links a.active::after{width:60%;}
.nav-toggle{
  display:none;position:relative;z-index:101;width:44px;height:44px;
  border:0;background:transparent;cursor:pointer;padding:0;
}
.nav-toggle i{position:absolute;left:11px;right:11px;top:50%;height:1.5px;background:var(--brand);transition:background var(--t-fast);}
.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:0;right:0;height:1.5px;background:var(--brand);
  transition:transform var(--t-mid) var(--ease),top var(--t-mid) var(--ease),background var(--t-fast);
}
.nav-toggle i::before{top:-7px;}
.nav-toggle i::after{top:7px;}
.nav-toggle.is-active i{background:transparent;}
.nav-toggle.is-active i::before{top:0;transform:rotate(45deg);background:#fff;}
.nav-toggle.is-active i::after{top:0;transform:rotate(-45deg);background:#fff;}
.nav-drawer{
  position:fixed;inset:0;z-index:99;
  background:rgba(15,59,52,.95);
  backdrop-filter:blur(6px);
  display:flex;flex-direction:column;justify-content:center;
  padding:0 28px;
  opacity:0;visibility:hidden;
  transition:opacity var(--t-mid) var(--ease),visibility var(--t-mid);
}
.nav-drawer.is-open{opacity:1;visibility:visible;}
.nav-drawer a{
  font-size:24px;color:#fff;padding:22px 0;font-weight:500;
  border-bottom:1px solid rgba(255,255,255,.16);
  transition:color var(--t-fast) var(--ease),padding-left var(--t-fast) var(--ease);
}
.nav-drawer a:first-child{border-top:1px solid rgba(255,255,255,.16);}
.nav-drawer a:hover,.nav-drawer a.active{color:var(--accent);padding-left:6px;}
@media (min-width:992px){.nav-drawer{display:none;}}
@media (max-width:991.98px){
  .nav-links{display:none;}
  .nav-toggle{display:block;}
}

/* ---------- hero ---------- */
.cat-hero{
  position:relative;overflow:hidden;
  padding:148px 0 72px;background:var(--bg);
}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(112deg,rgba(15,59,52,.06) 0 1px,transparent 1px 78px);
}
.cat-hero::after{
  content:"";position:absolute;right:-160px;top:-120px;width:520px;height:520px;
  border:1px solid rgba(15,59,52,.08);border-radius:50%;pointer-events:none;
}
.cat-hero .shell{position:relative;z-index:1;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:28px;padding:0 14px;
  border:1px solid rgba(15,59,52,.22);border-radius:var(--r-pill);
  background:rgba(15,59,52,.05);
  font-size:13px;color:var(--brand);letter-spacing:.02em;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);}
.cat-hero h1{
  font-size:40px;font-weight:800;color:var(--brand-deep);
  margin:20px 0 16px;max-width:800px;line-height:1.28;
}
.hero-lead{font-size:17px;color:var(--ink-2);max-width:660px;line-height:1.85;}
.anchor-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px;}
.anchor-pills a{
  display:inline-flex;align-items:center;height:38px;padding:0 18px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:rgba(255,255,255,.72);
  font-size:14px;color:var(--ink-2);
  transition:border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.anchor-pills a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);}
.metric-row{
  display:grid;grid-template-columns:repeat(3,1fr);
  margin-top:52px;padding-top:26px;border-top:1px solid var(--line);
  max-width:760px;
}
.metric{padding-right:26px;border-right:1px solid var(--line);}
.metric:last-child{border-right:0;padding-right:0;}
.metric b{
  display:block;font-size:34px;line-height:1.2;font-weight:800;
  color:var(--brand);font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.metric b em{font-style:normal;font-size:15px;color:var(--accent);margin-left:4px;font-weight:600;}
.metric span{display:block;margin-top:8px;font-size:13.5px;color:var(--ink-2);}

/* ---------- groups ---------- */
.group{padding:112px 0;}
.group-alt{background:var(--surface);}
.group-head{max-width:740px;margin-bottom:52px;}
.group-head .kicker{
  display:block;font-size:13px;letter-spacing:.14em;color:var(--muted);
  text-transform:uppercase;margin-bottom:14px;font-variant-numeric:tabular-nums;
}
.group-head h2{font-size:36px;font-weight:800;color:var(--brand-deep);}
.group-head p{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:660px;}

.split{display:grid;grid-template-columns:55fr 45fr;gap:64px;align-items:center;}
.split.reverse{grid-template-columns:45fr 55fr;}
.split-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-lg);box-shadow:var(--sh-hover);
}
.split-body p{font-size:16px;color:var(--ink-2);line-height:1.9;}
.split-body p + p{margin-top:18px;}
.check-list{margin-top:26px;}
.check-list li{
  position:relative;padding-left:22px;margin-bottom:14px;
  font-size:15.5px;color:var(--ink-2);line-height:1.85;
}
.check-list li::before{
  content:"";position:absolute;left:0;top:13px;width:11px;height:1.5px;background:var(--accent);
}
.check-list li strong{color:var(--ink);font-weight:600;}

.step-rows{border-bottom:1px solid var(--line);}
.step-row{
  display:grid;grid-template-columns:78px 1fr 32px;gap:24px;align-items:start;
  padding:28px 6px;border-top:1px solid var(--line);
  transition:background var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.step-row:hover{background:var(--surface);transform:translateX(4px);}
.group-alt .step-row:hover{background:var(--bg);}
.step-num{
  font-size:15px;color:var(--muted);font-variant-numeric:tabular-nums;
  font-weight:600;padding-top:3px;letter-spacing:.02em;
}
.step-body h3{font-size:20px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.step-body p{font-size:14.5px;color:var(--ink-2);line-height:1.85;max-width:680px;}
.step-arrow{
  display:flex;align-items:center;justify-content:flex-end;padding-top:6px;
  color:var(--line);transition:color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.step-row:hover .step-arrow{color:var(--accent);transform:translateX(3px);}

.callout{
  display:flex;align-items:center;gap:16px;
  background:var(--brand);color:#fff;border-radius:var(--r-md);
  padding:24px 34px;margin-top:56px;
  font-size:19px;font-weight:600;line-height:1.6;
}
.callout::before{
  content:"";flex:0 0 auto;width:8px;height:8px;border-radius:50%;background:var(--accent);
}

.mini-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:30px;}
.mini-item{
  border-left:2px solid var(--line);padding:4px 0 4px 20px;
  transition:border-color var(--t-fast) var(--ease);
}
.mini-item:hover{border-left-color:var(--accent);}
.mini-item h4{font-size:16px;font-weight:700;color:var(--brand);margin-bottom:8px;}
.mini-item p{font-size:14.5px;color:var(--ink-2);line-height:1.85;}

/* ---------- FAQ ---------- */
.faq-section{padding:112px 0;background:var(--bg);}
.faq-wrap{max-width:880px;margin:0 auto;}
.faq-wrap .group-head{text-align:center;margin-left:auto;margin-right:auto;}
.faq-wrap .group-head p{margin-left:auto;margin-right:auto;}
.faq-acc{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;--bs-accordion-border-color:transparent;}
.faq-acc .accordion-item{
  background:transparent;border:0;border-top:1px solid var(--line);border-radius:0;
}
.faq-acc .accordion-item:last-child{border-bottom:1px solid var(--line);}
.faq-acc .accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  padding:24px 0;font-size:18px;font-weight:600;color:var(--ink);
  display:flex;align-items:center;gap:18px;line-height:1.6;
}
.faq-acc .accordion-button:not(.collapsed){background:transparent;color:var(--brand);box-shadow:none;}
.faq-acc .accordion-button:focus{box-shadow:none;outline:none;border-color:transparent;}
.faq-acc .accordion-button::after{
  display:block;flex:0 0 auto;margin-left:auto;
  width:auto;height:auto;background-image:none;
  content:"+";font-size:22px;font-weight:400;color:var(--muted);line-height:1;
  transform:none;transition:color var(--t-fast) var(--ease);
}
.faq-acc .accordion-button:not(.collapsed)::after{content:"−";color:var(--accent);transform:none;background-image:none;}
.faq-num{
  flex:0 0 auto;font-size:14px;color:var(--muted);
  font-variant-numeric:tabular-nums;font-weight:600;min-width:28px;
}
.faq-acc .accordion-button:not(.collapsed) .faq-num{color:var(--accent);}
.faq-acc .accordion-body{
  padding:0 0 26px 46px;font-size:15px;color:var(--ink-2);line-height:1.85;
}
@media (max-width:575.98px){
  .faq-acc .accordion-body{padding-left:0;}
  .faq-acc .accordion-button{font-size:16.5px;gap:12px;}
}

/* ---------- CTA ---------- */
.cta-section{padding:0 0 112px;background:var(--bg);}
.cta-band{
  background:var(--brand-deep);color:#fff;border-radius:var(--r-lg);
  padding:56px 52px;display:grid;grid-template-columns:1fr auto;gap:36px;align-items:center;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-90px;bottom:-140px;width:360px;height:360px;
  border:1px solid rgba(255,255,255,.10);border-radius:50%;pointer-events:none;
}
.cta-band .cta-text{position:relative;z-index:1;}
.cta-band h2{font-size:30px;font-weight:800;color:#fff;margin-bottom:12px;}
.cta-band p{font-size:15.5px;color:#B9CBC5;max-width:560px;line-height:1.85;}
.cta-actions{position:relative;z-index:1;display:flex;flex-direction:column;align-items:flex-start;gap:16px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:10px;
  font-size:15.5px;font-weight:600;cursor:pointer;
  border:1px solid transparent;white-space:nowrap;
  transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);
}
.btn-accent{background:var(--accent);color:#0B1F1A;}
.btn-accent:hover{background:var(--brand);color:#fff;transform:translateY(-1px);}
.btn-outline{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-outline:hover{background:rgba(15,59,52,.08);transform:translateY(-1px);}
.btn-light{background:#FFFFFF;color:var(--brand-deep);}
.btn-light:hover{background:var(--accent);color:#0B1F1A;transform:translateY(-1px);}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff;background:transparent;}
.btn-ghost:hover{background:rgba(255,255,255,.10);border-color:#fff;transform:translateY(-1px);}
.link-arrow{
  position:relative;display:inline-flex;align-items:center;gap:6px;
  font-size:14.5px;color:#B9CBC5;
}
.link-arrow::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--accent);
  transition:width var(--t-fast) var(--ease);
}
.link-arrow:hover{color:#fff;}
.link-arrow:hover::after{width:100%;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand);color:#fff;padding:72px 0 0;position:relative;}
.site-footer::before{content:"";position:absolute;top:0;left:0;height:1px;width:40%;background:rgba(255,90,31,.4);}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:56px;}
.footer-brand .brand-text{font-size:18px;}
.footer-brand .brand-text b{color:#fff;}
.footer-brand p{color:#B9CBC5;font-size:14px;line-height:1.85;margin-top:16px;max-width:330px;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col li{margin-bottom:12px;}
.footer-col a{font-size:13.5px;color:#B9CBC5;transition:color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease);display:inline-block;}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:22px 0 28px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-size:13px;color:#9FB6AF;
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  .split,.split.reverse{grid-template-columns:1fr;gap:40px;}
  .split.reverse .split-media{order:2;}
}
@media (max-width:991.98px){
  .group,.faq-section{padding:80px 0;}
  .cta-section{padding-bottom:80px;}
  .cat-hero{padding:120px 0 56px;}
  .cat-hero h1{font-size:34px;}
  .group-head h2{font-size:30px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band{grid-template-columns:1fr;padding:44px 40px;}
}
@media (max-width:767.98px){
  .cat-hero{padding:104px 0 48px;}
  .cat-hero h1{font-size:29px;}
  .hero-lead{font-size:15.5px;}
  .group-head h2{font-size:26px;}
  .group-head p{font-size:15.5px;}
  .metric-row{grid-template-columns:1fr;gap:0;padding-top:0;}
  .metric{border-right:0;border-top:1px solid var(--line);padding:16px 0 0;}
  .metric:first-child{border-top:1px solid var(--line);}
  .step-row{grid-template-columns:52px 1fr;gap:16px;}
  .step-arrow{display:none;}
  .step-body h3{font-size:18px;}
  .mini-grid{grid-template-columns:1fr;gap:20px;}
  .callout{font-size:16px;padding:20px 22px;}
  .cta-band h2{font-size:24px;}
}
@media (max-width:575.98px){
  .group,.faq-section{padding:64px 0;}
  .cta-section{padding-bottom:64px;}
  .cat-hero h1{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-band{padding:34px 24px;}
  .footer-bottom{flex-direction:column;}
  .btn{width:100%;}
  .cta-actions{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}
section[id]{scroll-margin-top:96px;}

/* roulang page: category2 */
:root{
  --brand:#0F3B34;
  --brand-deep:#08251F;
  --accent:#FF5A1F;
  --ink:#141715;
  --ink-2:#5A625E;
  --line:#E2E0D8;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --muted:#6B8F84;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:24px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(15,59,52,.06);
  --sh-hover:0 14px 36px -14px rgba(15,59,52,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button,input,select,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:rgba(255,90,31,.22)}
.shell{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (min-width:1600px){.shell{max-width:1280px}}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  background:rgba(246,244,239,.92);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid transparent;
  transition:height .26s var(--ease),border-color .26s var(--ease),background .26s var(--ease);
}
.site-header.scrolled{border-bottom-color:var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;transition:height .26s var(--ease)}
.site-header.scrolled .header-inner{height:64px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  position:relative;width:28px;height:28px;border-radius:9px;background:var(--brand);
  flex:0 0 auto;overflow:hidden;
}
.brand-mark::before{content:"";position:absolute;left:6px;top:6px;width:9px;height:9px;border-radius:2px;background:var(--accent)}
.brand-mark::after{content:"";position:absolute;right:6px;bottom:6px;width:9px;height:9px;border-radius:2px;background:rgba(255,255,255,.9)}
.brand-text{display:flex;align-items:baseline;font-size:19px;letter-spacing:-.01em;color:var(--ink)}
.brand-text b{font-weight:800}
.brand-text span{font-weight:400;color:var(--ink-2)}
.nav-links{display:flex;align-items:center;gap:34px}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:20%;right:20%;bottom:0;height:2px;border-radius:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left center;
  transition:transform .2s var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--ink);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-toggle{
  display:none;width:42px;height:42px;border:0;background:transparent;cursor:pointer;
  position:relative;z-index:210;
}
.nav-toggle i{display:block;position:relative;width:22px;height:2px;margin:0 auto;background:var(--brand);border-radius:2px;transition:background .25s var(--ease)}
.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:0;width:22px;height:2px;background:var(--brand);border-radius:2px;
  transition:transform .25s var(--ease),top .25s var(--ease),background .25s var(--ease);
}
.nav-toggle i::before{top:-7px}
.nav-toggle i::after{top:7px}
.nav-toggle.open i{background:transparent}
.nav-toggle.open i::before,.nav-toggle.open i::after{background:#fff}
.nav-toggle.open i::before{top:0;transform:rotate(45deg)}
.nav-toggle.open i::after{top:0;transform:rotate(-45deg)}
@media (max-width:991.98px){
  .nav-toggle{display:block}
  .nav-links{
    position:fixed;inset:0;z-index:200;
    background:rgba(15,59,52,.97);
    flex-direction:column;justify-content:center;align-items:stretch;
    gap:0;padding:96px 32px;
    transform:translateX(100%);
    transition:transform .32s var(--ease);
  }
  .nav-links.open{transform:translateX(0)}
  .nav-links a{color:#fff;font-size:24px;padding:20px 4px;border-bottom:1px solid rgba(255,255,255,.14)}
  .nav-links a::after{display:none}
  .nav-links a.active{color:#fff}
}

/* ---------- hero ---------- */
.cat-hero{position:relative;overflow:hidden;background:var(--bg);border-bottom:1px solid var(--line);padding:56px 0 52px}
.hero-lines{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.cat-hero .shell{position:relative;z-index:1}
.crumbs{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--ink-2);margin-bottom:22px}
.crumbs a:hover{color:var(--brand);text-decoration:underline;text-underline-offset:3px}
.crumbs .sep{color:var(--line)}
.crumbs .cur{color:var(--ink)}
.cat-hero h1{font-size:40px;font-weight:800;max-width:900px}
.cat-hero .lede{margin-top:16px;font-size:17px;color:var(--ink-2);max-width:720px;line-height:1.85}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.anchor-nav a{
  font-size:13.5px;color:var(--ink-2);background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:7px 18px;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.anchor-nav a:hover{border-color:var(--brand);color:var(--brand);background:rgba(15,59,52,.04)}
@media (max-width:575.98px){
  .cat-hero{padding:36px 0 40px}
  .cat-hero h1{font-size:28px}
  .cat-hero .lede{font-size:15.5px}
}

/* ---------- section ---------- */
.section{padding:112px 0}
.section.tint{background:var(--surface)}
.section.dark{background:var(--brand-deep);color:#fff}
@media (max-width:991.98px){.section{padding:80px 0}}
@media (max-width:575.98px){.section{padding:64px 0}}
.sec-head{max-width:740px;margin-bottom:52px}
.sec-eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--muted)}
.sec-head h2{font-size:36px;font-weight:800;margin:14px 0 16px}
.sec-head p{color:var(--ink-2);font-size:16px;line-height:1.85}
.section.dark .sec-head p{color:#B9CBC5}
.section.dark .sec-eyebrow{color:#8FB3A8}
@media (max-width:991.98px){.sec-head h2{font-size:28px}}
@media (max-width:575.98px){.sec-head h2{font-size:26px}.sec-head{margin-bottom:36px}}

/* ---------- row list ---------- */
.row-list{border-top:1px solid var(--line)}
.row-item{
  display:grid;grid-template-columns:64px 1fr 40px;gap:24px;align-items:start;
  padding:30px 20px;border-bottom:1px solid var(--line);
  transition:background .22s var(--ease),transform .22s var(--ease);
}
.row-no{font-size:14px;font-weight:700;color:var(--muted);letter-spacing:.06em;padding-top:5px}
.row-body h3{font-size:20px;font-weight:700;margin-bottom:8px}
.row-body p{font-size:14.5px;color:var(--ink-2);line-height:1.8;max-width:760px}
.row-arrow{color:var(--line);display:flex;justify-content:flex-end;padding-top:4px;transition:color .22s var(--ease),transform .22s var(--ease)}
@media (hover:hover){
  .row-item:hover{background:var(--surface);transform:translateX(4px)}
  .row-item:hover .row-arrow{color:var(--accent);transform:translateX(2px)}
}
@media (max-width:575.98px){
  .row-item{grid-template-columns:44px 1fr;gap:14px;padding:24px 6px}
  .row-arrow{display:none}
  .row-body h3{font-size:18px}
}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:55fr 45fr;gap:64px;align-items:center}
.split.rev{grid-template-columns:45fr 55fr}
.split h2{font-size:32px;font-weight:800;margin-bottom:18px}
.split .lead{color:var(--ink-2);font-size:16px;margin-bottom:24px}
.dash-list li{position:relative;padding-left:22px;margin-bottom:14px;color:var(--ink-2);font-size:15px;line-height:1.8}
.dash-list li::before{content:"";position:absolute;left:0;top:12px;width:12px;height:1.5px;background:var(--accent)}
.dash-list li b{color:var(--ink);font-weight:600}
.figure{border-radius:var(--r-lg);overflow:hidden;background:var(--bg);border:1px solid var(--line)}
.figure img{width:100%;aspect-ratio:4/3;object-fit:cover}
.figcap{font-size:13px;color:var(--ink-2);text-align:center;margin-top:12px}
@media (max-width:991.98px){
  .split,.split.rev{grid-template-columns:1fr;gap:36px}
  .split h2{font-size:26px}
}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step{padding:36px 28px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step-no{font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--accent)}
.step h3{font-size:18px;font-weight:700;margin:14px 0 10px}
.step p{font-size:14px;color:var(--ink-2);line-height:1.8}
@media (max-width:991.98px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2){border-right:0}
  .step:nth-child(1),.step:nth-child(2){border-bottom:1px solid var(--line)}
}
@media (max-width:575.98px){
  .steps{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line);padding:28px 8px}
  .step:last-child{border-bottom:0}
}

/* ---------- callout ---------- */
.callout{
  display:flex;align-items:center;gap:20px;
  background:var(--brand);color:#fff;border-radius:var(--r-md);
  padding:26px 36px;font-size:19px;font-weight:600;line-height:1.6;
  margin:56px 0 0;
}
.callout i{color:var(--accent);font-size:20px;flex:0 0 auto}
@media (max-width:575.98px){
  .callout{font-size:16px;padding:22px 20px;gap:14px;align-items:flex-start}
}

/* ---------- compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;position:relative}
.compare::after{
  content:"";position:absolute;top:0;bottom:0;left:50%;width:1px;
  background:repeating-linear-gradient(to bottom,var(--line) 0 6px,transparent 6px 12px);
}
.cmp-col{padding:0 48px}
.cmp-col:first-child{padding-left:0}
.cmp-col:last-child{padding-right:0}
.cmp-title{font-size:14px;font-weight:700;letter-spacing:.14em;color:var(--muted);margin-bottom:8px}
.cmp-col.hot .cmp-title{color:var(--brand)}
.cmp-sub{font-size:14px;color:var(--ink-2);margin-bottom:30px}
.cmp-item{margin-bottom:26px}
.cmp-item .k{display:flex;justify-content:space-between;align-items:baseline;font-size:14.5px;margin-bottom:10px}
.cmp-item .k b{font-weight:700;color:var(--ink)}
.cmp-item .k em{font-style:normal;font-weight:700;font-variant-numeric:tabular-nums;color:var(--ink-2)}
.cmp-col.hot .cmp-item .k em{color:var(--accent)}
.bar{height:8px;border-radius:var(--r-pill);background:#E2E0D8;overflow:hidden}
.bar span{display:block;height:100%;width:0;border-radius:var(--r-pill);background:var(--muted);transition:width .9s var(--ease)}
.cmp-col.hot .bar span{background:var(--brand)}
.bar.in span{width:var(--w)}
@media (max-width:767.98px){
  .compare{grid-template-columns:1fr}
  .compare::after{display:none}
  .cmp-col{padding:0 0 34px;border-bottom:1px dashed var(--line);margin-bottom:34px}
  .cmp-col:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}
}

/* ---------- faq ---------- */
.faq-wrap{max-width:880px;margin:0 auto}
.faq-list{border-top:1px solid var(--line)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-q{
  width:100%;background:transparent;border:0;cursor:pointer;text-align:left;
  display:grid;grid-template-columns:52px 1fr 26px;gap:16px;align-items:center;
  padding:26px 6px;color:var(--ink);
}
.faq-no{font-size:13px;font-weight:700;color:var(--muted);letter-spacing:.1em}
.faq-item.open .faq-no{color:var(--accent)}
.faq-q span.qt{font-size:18px;font-weight:600;line-height:1.6}
.faq-mark{position:relative;width:15px;height:15px;justify-self:end}
.faq-mark::before,.faq-mark::after{
  content:"";position:absolute;background:var(--brand);border-radius:2px;
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.faq-mark::before{left:0;top:6.5px;width:15px;height:2px}
.faq-mark::after{left:6.5px;top:0;width:2px;height:15px}
.faq-item.open .faq-mark::after{transform:rotate(90deg);opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height .32s var(--ease)}
.faq-item.open .faq-a{max-height:360px}
.faq-a p{padding:0 6px 26px 74px;font-size:15px;color:var(--ink-2);line-height:1.85}
@media (max-width:575.98px){
  .faq-q{grid-template-columns:38px 1fr 22px;gap:10px;padding:22px 0}
  .faq-q span.qt{font-size:16.5px}
  .faq-a p{padding:0 0 22px 48px;font-size:14.5px}
}

/* ---------- cta ---------- */
.cta-band{position:relative;overflow:hidden;border-radius:var(--r-lg);background:var(--brand-deep)}
.cta-band .cta-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.28}
.cta-band .cta-overlay{position:absolute;inset:0;background:linear-gradient(100deg,rgba(8,37,31,.94) 0%,rgba(8,37,31,.72) 58%,rgba(8,37,31,.46) 100%)}
.cta-inner{position:relative;z-index:1;padding:64px 56px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.cta-inner h2{color:#fff;font-size:30px;font-weight:800;margin-bottom:12px}
.cta-inner p{color:#B9CBC5;font-size:15.5px;max-width:560px}
.cta-actions{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.btn-solid{
  display:inline-flex;align-items:center;gap:10px;
  height:48px;padding:0 28px;border:0;border-radius:10px;
  background:var(--accent);color:#0B1F1A;font-weight:600;font-size:15px;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.btn-solid:hover{background:var(--brand);color:#fff;transform:translateY(-1px)}
.btn-ghost{
  display:inline-flex;align-items:center;gap:10px;
  height:48px;padding:0 26px;border-radius:10px;
  border:1px solid rgba(255,255,255,.55);color:#fff;font-weight:600;font-size:15px;
  background:transparent;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff;transform:translateY(-1px)}
.text-link{color:var(--accent);font-weight:600;font-size:15px;position:relative}
.text-link::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:currentColor;transform:scaleX(1);transform-origin:left;transition:transform .2s var(--ease)}
.text-link:hover{color:#fff}
.btn-solid:focus-visible,.btn-ghost:focus-visible,.faq-q:focus-visible,.nav-links a:focus-visible,.anchor-nav a:focus-visible{
  outline:3px solid rgba(255,90,31,.25);outline-offset:3px;
}
@media (max-width:991.98px){
  .cta-inner{grid-template-columns:1fr;padding:44px 28px;gap:28px}
  .cta-inner h2{font-size:24px}
}

/* ---------- footer ---------- */
.site-footer{position:relative;background:var(--brand);color:#fff;padding:76px 0 0;margin-top:0}
.site-footer::before{content:"";position:absolute;top:0;left:0;width:40%;height:1px;background:var(--accent);opacity:.55}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:48px;padding-bottom:56px}
.footer-brand .brand-text{color:#fff;font-size:20px;margin-bottom:16px}
.footer-brand p{color:#B9CBC5;font-size:14px;line-height:1.85;max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px}
.footer-col li{margin-bottom:11px}
.footer-col a{font-size:13.5px;color:#B9CBC5;display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col a:hover{color:#fff;transform:translateX(2px)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);padding:24px 0 32px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8FB3A8;
}
@media (max-width:991.98px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:575.98px){
  .site-footer{padding-top:56px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --brand:#0F3B34;
  --brand-deep:#08251F;
  --accent:#FF5A1F;
  --ink:#141715;
  --ink-2:#5A625E;
  --line:#E2E0D8;
  --bg:#F6F4EF;
  --surface:#FFFFFF;
  --muted:#6B8F84;
  --r-sm:8px;
  --r-md:14px;
  --r-lg:24px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(15,59,52,.06);
  --shadow-lg:0 14px 36px -14px rgba(15,59,52,.20);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sec:112px;
  --shell:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--brand);text-decoration:none;transition:color .2s var(--ease);}
p{margin:0 0 16px;}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em;line-height:1.28;font-weight:800;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(255,90,31,.35);outline-offset:2px;border-radius:4px;}
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 24px;}
@media (min-width:1600px){.shell{max-width:1280px;}}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(246,244,239,.92);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
  transition:border-color .26s var(--ease),box-shadow .26s var(--ease);
  border-bottom:1px solid transparent;
}
.site-header.scrolled{border-bottom-color:var(--line);box-shadow:0 6px 18px -18px rgba(15,59,52,.4);}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;transition:height .26s var(--ease);}
.site-header.scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:11px;color:var(--brand);}
.brand-mark{position:relative;width:22px;height:22px;border-radius:6px;background:var(--brand);flex:none;}
.brand-mark::after{content:"";position:absolute;inset:6px;border-radius:2px;background:var(--accent);}
.brand-text{display:inline-flex;align-items:baseline;gap:3px;font-size:19px;letter-spacing:-.01em;}
.brand-text b{font-weight:800;}
.brand-text span{font-weight:400;}
.nav-links{display:flex;align-items:center;gap:34px;}
.nav-links a{position:relative;display:inline-block;padding:6px 0;font-size:15px;color:var(--ink-2);}
.nav-links a::after{
  content:"";position:absolute;left:20%;right:20%;bottom:0;height:2px;background:var(--accent);
  transform:scaleX(0);transform-origin:left center;transition:transform .2s var(--ease);
}
.nav-links a:hover{color:var(--brand);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand);font-weight:700;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-toggle{
  display:none;position:relative;width:42px;height:42px;border:0;background:transparent;cursor:pointer;padding:0;
}
.nav-toggle i,.nav-toggle i::before,.nav-toggle i::after{
  content:"";position:absolute;left:10px;width:22px;height:1.6px;background:var(--brand);transition:transform .26s var(--ease);
}
.nav-toggle i{top:20px;}
.nav-toggle i::before{top:-7px;left:0;}
.nav-toggle i::after{top:7px;left:0;}
.nav-drawer{
  position:fixed;inset:0;z-index:200;background:rgba(15,59,52,.97);
  display:flex;flex-direction:column;padding:24px 24px 40px;
  opacity:0;visibility:hidden;transition:opacity .26s var(--ease),visibility .26s var(--ease);
}
.nav-drawer.open{opacity:1;visibility:visible;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;height:60px;}
.drawer-brand{color:#fff;font-size:18px;font-weight:800;letter-spacing:-.01em;}
.drawer-brand span{font-weight:400;color:#B9CBC5;}
.drawer-close{position:relative;width:42px;height:42px;border:0;background:transparent;cursor:pointer;}
.drawer-close i,.drawer-close i::before{
  content:"";position:absolute;left:10px;top:20px;width:22px;height:1.6px;background:#fff;
}
.drawer-close i{transform:rotate(45deg);}
.drawer-close i::before{transform:rotate(90deg);top:0;left:0;}
.drawer-nav{margin-top:24px;display:flex;flex-direction:column;}
.drawer-nav a{color:#fff;font-size:24px;padding:20px 0;border-bottom:1px solid rgba(255,255,255,.14);}
.drawer-nav a:first-child{border-top:1px solid rgba(255,255,255,.14);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:10px;border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease),transform .26s var(--ease);
}
.btn-primary{background:var(--accent);color:#0B1F1A;}
.btn-primary:hover{background:var(--brand);color:#fff;transform:translateY(-1px);}
.btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent;}
.btn-ghost:hover{background:rgba(15,59,52,.08);}
.btn-ghost.on-dark{border-color:rgba(255,255,255,.45);color:#fff;}
.btn-ghost.on-dark:hover{background:rgba(255,255,255,.12);border-color:#fff;}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--brand);position:relative;}
.link-arrow::after{content:"";position:absolute;left:0;right:26px;bottom:-4px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .26s var(--ease);}
.link-arrow:hover::after{transform:scaleX(1);}
.link-arrow.on-dark{color:#fff;}

/* ---------- 分类 Hero ---------- */
main{padding-top:72px;}
.cat-hero{position:relative;overflow:hidden;background:var(--bg);padding:72px 0 64px;}
.cat-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(115deg,rgba(15,59,52,.07) 0 1px,transparent 1px 68px);
}
.cat-hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:520px;height:520px;border-radius:50%;
  border:1px solid rgba(15,59,52,.08);pointer-events:none;
}
.cat-hero .shell{position:relative;z-index:1;}
.eyebrow{
  display:inline-block;padding:5px 15px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--surface);font-size:13px;color:var(--muted);letter-spacing:.04em;
}
.cat-hero h1{
  margin:22px 0 16px;font-size:40px;color:var(--brand-deep);max-width:860px;
}
.cat-hero .lead{max-width:640px;font-size:16px;color:var(--ink-2);margin:0;}
.anchor-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.anchor-pills a{
  display:inline-block;padding:7px 18px;border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--surface);font-size:14px;color:var(--ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.anchor-pills a:hover{border-color:var(--brand);color:var(--brand);background:#fff;}

/* ---------- 区块 ---------- */
.section{padding:var(--sec) 0;}
.section-alt{background:var(--surface);}
.sec-head{max-width:760px;margin-bottom:56px;}
.sec-head h2{font-size:36px;color:var(--brand-deep);margin-bottom:16px;}
.sec-head p{font-size:16px;color:var(--ink-2);margin:0;}
[id]{scroll-margin-top:96px;}

/* ---------- 行式条目 ---------- */
.rowlist{border-top:1px solid var(--line);}
.rowlist-item{
  display:grid;grid-template-columns:60px 1fr 32px;gap:24px;align-items:start;
  padding:26px 20px;border-bottom:1px solid var(--line);
  transition:background .26s var(--ease),transform .26s var(--ease);
}
.rowlist-item:hover{background:var(--surface);transform:translateX(4px);}
.rowlist-item .num{font-size:15px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums;padding-top:4px;}
.rowlist-item h3{font-size:20px;margin-bottom:8px;color:var(--ink);}
.rowlist-item p{margin:0;font-size:14px;color:var(--ink-2);line-height:1.8;}
.rowlist-item .arrow{justify-self:end;color:var(--line);font-size:18px;line-height:1;padding-top:6px;transition:color .26s var(--ease),transform .26s var(--ease);}
.rowlist-item:hover .arrow{color:var(--accent);transform:translateX(4px);}

/* ---------- 图文错位 ---------- */
.split{display:grid;grid-template-columns:55fr 45fr;gap:64px;align-items:center;}
.split-media img{border-radius:var(--r-lg);width:100%;aspect-ratio:4/3;object-fit:cover;}
.split-body h2{font-size:36px;color:var(--brand-deep);margin-bottom:16px;}
.split-body > p{color:var(--ink-2);font-size:16px;}
.mini-list{margin-top:32px;border-top:1px solid var(--line);}
.mini-item{padding:20px 0;border-bottom:1px solid var(--line);}
.mini-item h3{font-size:18px;margin-bottom:6px;color:var(--brand);}
.mini-item p{margin:0;font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ---------- 强调横条 ---------- */
.band{
  margin-top:56px;padding:24px 32px;border-radius:var(--r-md);
  background:var(--brand);color:#fff;font-size:18px;font-weight:600;text-align:center;
}
.band span{color:#FFD9C7;font-weight:400;font-size:15px;display:block;margin-top:6px;}

/* ---------- 卡片网格 ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-md);
  padding:28px;transition:transform .26s var(--ease),box-shadow .26s var(--ease),border-color .26s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(15,59,52,.2);}
.card .tag{
  display:inline-block;padding:3px 12px;border:1px solid var(--brand);border-radius:var(--r-pill);
  background:rgba(15,59,52,.08);font-size:13px;color:var(--brand);margin-bottom:18px;
}
.card h3{font-size:20px;margin-bottom:10px;color:var(--ink);}
.card p{margin:0;font-size:14px;color:var(--ink-2);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:center;gap:20px;padding:26px 4px;
  background:transparent;border:0;text-align:left;cursor:pointer;color:var(--ink);
}
.faq-q .idx{font-size:15px;font-weight:700;color:var(--muted);font-variant-numeric:tabular-nums;flex:none;transition:color .26s var(--ease);}
.faq-q .q{flex:1;font-size:18px;font-weight:600;line-height:1.5;}
.faq-q .sign{position:relative;width:16px;height:16px;flex:none;}
.faq-q .sign::before,.faq-q .sign::after{
  content:"";position:absolute;background:var(--brand);transition:transform .26s var(--ease),background .26s var(--ease);
}
.faq-q .sign::before{left:0;top:7px;width:16px;height:1.6px;}
.faq-q .sign::after{left:7px;top:0;width:1.6px;height:16px;}
.faq-item.open .faq-q .idx{color:var(--accent);}
.faq-item.open .faq-q .sign::after{transform:scaleY(0);}
.faq-item.open .faq-q .sign::before{background:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
.faq-a p{margin:0;padding:2px 4px 24px 44px;font-size:15px;color:var(--ink-2);line-height:1.85;}

/* ---------- CTA ---------- */
.cta-panel{
  position:relative;overflow:hidden;background:var(--brand-deep);color:#fff;
  border-radius:var(--r-lg);padding:56px;display:grid;grid-template-columns:1.25fr 1fr;gap:40px;align-items:center;
}
.cta-panel::after{
  content:"";position:absolute;left:-60px;bottom:-140px;width:340px;height:340px;border-radius:50%;
  border:1px solid rgba(255,255,255,.1);
}
.cta-panel h2{font-size:32px;color:#fff;margin-bottom:16px;}
.cta-panel p{color:#B9CBC5;font-size:15px;margin:0;max-width:520px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:flex-end;position:relative;z-index:1;}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;background:var(--brand);color:#fff;padding:72px 0 0;margin-top:0;}
.site-footer::before{content:"";position:absolute;top:0;left:0;height:1px;width:40%;background:rgba(255,90,31,.4);}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.footer-brand .brand-text{color:#fff;font-size:19px;}
.footer-brand p{margin:18px 0 0;font-size:13.5px;color:#B9CBC5;max-width:320px;line-height:1.9;}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{list-style:none;margin:0;padding:0;}
.footer-col li{margin-bottom:11px;}
.footer-col a{display:inline-block;font-size:13.5px;color:#B9CBC5;transition:color .2s var(--ease),transform .2s var(--ease);}
.footer-col a:hover{color:#fff;transform:translateX(2px);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  margin-top:56px;padding:22px 0;border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:#B9CBC5;
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  :root{--sec:88px;}
  .split{gap:44px;}
  .cat-hero h1{font-size:36px;}
}
@media (max-width:991px){
  :root{--sec:80px;}
  main{padding-top:60px;}
  .header-inner{height:60px;}
  .site-header.scrolled .header-inner{height:58px;}
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .cat-hero{padding:56px 0 52px;}
  .cat-hero h1{font-size:32px;}
  .sec-head h2,.split-body h2{font-size:28px;}
  .card-grid{grid-template-columns:repeat(2,1fr);}
  .cta-panel{grid-template-columns:1fr;padding:44px 32px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  :root{--sec:64px;}
  body{font-size:15.5px;}
  .shell{padding:0 20px;}
  .cat-hero h1{font-size:28px;}
  .sec-head{margin-bottom:36px;}
  .sec-head h2,.split-body h2{font-size:26px;}
  .split{grid-template-columns:1fr;gap:28px;}
  .split-media{order:-1;}
  .card-grid{grid-template-columns:1fr;}
  .rowlist-item{grid-template-columns:44px 1fr;gap:14px;padding:22px 8px;}
  .rowlist-item .arrow{display:none;}
  .band{font-size:16px;padding:20px;}
  .band span{font-size:14px;}
  .faq-q .q{font-size:17px;}
  .faq-a p{padding-left:0;}
  .cta-panel h2{font-size:26px;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .footer-bottom{flex-direction:column;gap:8px;}
  .btn{width:100%;}
  .cta-actions{flex-direction:column;align-items:stretch;}
  .link-arrow{justify-content:center;}
}
@media (max-width:575px){
  .cat-hero h1{font-size:26px;}
  .anchor-pills a{font-size:13.5px;padding:6px 14px;}
  .card{padding:24px;}
}