/* roulang page: index */
:root{
  --ink:#0A1A14;
  --primary:#0E3B2E;
  --primary-2:#14513F;
  --accent:#C9F24C;
  --accent-2:#FF6A3D;
  --paper:#F7F7F3;
  --card:#FFFFFF;
  --text:#0F1A16;
  --muted:#5A6B62;
  --line:#E6E8E2;
  --line-dark:rgba(255,255,255,.10);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(10,26,20,.04), 0 1px 0 rgba(10,26,20,.03);
  --shadow-2:0 18px 40px -18px rgba(10,26,20,.28);
  --ease:cubic-bezier(.2,.8,.2,1);
  --sidebar:248px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Source Han Sans SC','Microsoft YaHei','Inter','Helvetica Neue',Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  padding-left:var(--sidebar);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
a{color:var(--primary);text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4{color:var(--text);margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.container-x{max-width:1180px;margin:0 auto;padding:0 24px;}
.tnum{font-variant-numeric:tabular-nums;}

/* ============ 侧栏 App Shell ============ */
.shell-sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar);
  background:linear-gradient(160deg,var(--ink),var(--primary));
  color:#F2F5F1;display:flex;flex-direction:column;z-index:1045;
  transition:width .24s var(--ease),transform .28s var(--ease);
}
.sidebar-brand{
  height:88px;display:flex;align-items:center;padding:0 20px;flex:0 0 auto;
  border-bottom:1px solid var(--line-dark);
}
.brand-mark{display:flex;flex-direction:column;line-height:1.1;color:#fff;}
.brand-main{font-size:22px;font-weight:800;letter-spacing:-.01em;}
.brand-sub{font-size:11px;letter-spacing:.16em;color:rgba(255,255,255,.6);margin-top:3px;}
.sidebar-scroll{flex:1 1 auto;overflow-y:auto;padding:18px 14px 12px;}
.sidebar-scroll::-webkit-scrollbar{width:6px;}
.sidebar-scroll::-webkit-scrollbar-thumb{background:rgba(255,255,255,.14);border-radius:9px;}
.side-group-label{
  font-size:11px;letter-spacing:.18em;color:rgba(255,255,255,.42);
  padding:14px 16px 8px;text-transform:uppercase;
}
.nav-item{
  position:relative;display:flex;align-items:center;gap:12px;height:44px;
  padding:0 16px;border-radius:10px;color:rgba(255,255,255,.72);
  transition:background .16s var(--ease),color .16s var(--ease);
  font-size:15px;white-space:nowrap;overflow:hidden;
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.active{background:rgba(255,255,255,.06);color:#fff;}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:2px;
  border-radius:2px;background:var(--accent);
}
.nav-ico{width:20px;height:20px;flex:0 0 20px;opacity:.85;}
.nav-item.active .nav-ico{opacity:1;}
.nav-text{overflow:hidden;text-overflow:ellipsis;}
.anchor-item{
  display:flex;align-items:center;gap:10px;height:36px;padding:0 16px;
  border-radius:8px;color:rgba(255,255,255,.56);font-size:13.5px;
  transition:color .16s var(--ease),background .16s var(--ease);
}
.anchor-item:hover{color:#fff;background:rgba(255,255,255,.05);}
.anchor-item.current{color:#fff;}
.anchor-item.current .anchor-dot{background:var(--accent);transform:scale(1);}
.anchor-dot{width:6px;height:6px;border-radius:50%;background:rgba(255,255,255,.3);flex:0 0 6px;transition:background .16s,transform .16s;}
.sidebar-foot{
  flex:0 0 auto;padding:16px 18px 20px;border-top:1px solid var(--line-dark);
}
.side-cta{
  display:flex;align-items:center;justify-content:center;height:44px;width:100%;
  border-radius:var(--r-pill);background:var(--accent);color:var(--ink);
  font-weight:700;font-size:15px;transition:transform .18s var(--ease),filter .18s var(--ease);
}
.side-cta:hover{filter:brightness(1.06);transform:translateY(-1px);color:var(--ink);}
.side-note{font-size:12px;color:rgba(255,255,255,.45);margin-top:10px;line-height:1.5;}

/* 窄栏状态 */
@media (min-width:992px) and (max-width:1199px){
  :root{--sidebar:76px;}
  .shell-sidebar{width:76px;}
  .shell-sidebar:hover{width:248px;box-shadow:0 24px 60px -24px rgba(10,26,20,.6);}
  .sidebar-brand{padding:0 26px;}
  .brand-text-wrap{opacity:0;transition:opacity .16s var(--ease);}
  .shell-sidebar:hover .brand-text-wrap{opacity:1;}
  .nav-text,.side-group-label,.side-note,.side-cta span{opacity:0;transition:opacity .16s var(--ease);}
  .shell-sidebar:hover .nav-text,
  .shell-sidebar:hover .side-group-label,
  .shell-sidebar:hover .side-note,
  .shell-sidebar:hover .side-cta span{opacity:1;}
  .sidebar-foot{padding:16px 14px;}
  .side-cta{width:48px;margin:0 auto;}
  .shell-sidebar:hover .side-cta{width:100%;}
  .shell-sidebar:hover .sidebar-foot{padding:16px 18px;}
}

/* 顶部移动栏 */
.topbar{
  position:fixed;top:0;left:0;right:0;height:64px;z-index:1046;
  display:none;align-items:center;justify-content:space-between;padding:0 18px;
  background:linear-gradient(160deg,var(--ink),var(--primary));color:#fff;
}
.topbar .brand-main{font-size:19px;}
.topbar .brand-sub{font-size:10px;}
.burger{
  width:44px;height:44px;border-radius:12px;border:1px solid var(--line-dark);
  background:transparent;display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;
}
.burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,26,20,.5);z-index:1044;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;
}
.drawer-mask.show{opacity:1;visibility:visible;}

/* ============ 进度条 ============ */
.progress-rail{
  position:fixed;top:0;left:var(--sidebar);right:0;height:3px;z-index:1043;
  background:transparent;pointer-events:none;
}
.progress-fill{height:3px;width:0;background:var(--accent);transition:width .12s linear;}

/* ============ 按钮 ============ */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--r-md);font-weight:600;font-size:15.5px;
  border:1px solid transparent;cursor:pointer;transition:all .18s var(--ease);
  text-align:center;padding:0 26px;height:48px;line-height:1;
}
.btn-pill{border-radius:var(--r-pill);}
.btn-accent{background:var(--accent);color:var(--ink);}
.btn-accent:hover{background:#d3f76a;transform:translateY(-1px);box-shadow:0 12px 28px -14px rgba(10,26,20,.5);color:var(--ink);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
.btn-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.42);}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn-lg-x{height:56px;padding:0 34px;font-size:16.5px;}
.btn-sm-x{height:40px;padding:0 20px;font-size:14px;}
.btn-x[disabled],.btn-x.disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none;}

/* 文本链接扫过 */
.link-sweep{
  position:relative;color:var(--primary);font-weight:600;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 2px;
  transition:background-size .18s var(--ease);padding-bottom:2px;
}
.link-sweep:hover{background-size:100% 2px;color:var(--primary);}

/* ============ 徽章 / 标签 ============ */
.badge-x{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:var(--r-pill);font-size:12px;letter-spacing:.02em;font-weight:600;
}
.badge-accent{background:var(--accent);color:var(--ink);}
.badge-ink{background:var(--ink);color:var(--paper);}
.badge-line{border:1px solid var(--line);background:transparent;color:var(--muted);}
.badge-danger{background:rgba(255,106,61,.12);color:#B33F19;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(160deg,var(--ink),var(--primary));
  padding:120px 0;min-height:88vh;display:flex;align-items:center;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.04) 0 1px,transparent 1px 78px);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;width:100%;}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;}
.eyebrow-pill{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 16px;
  border-radius:var(--r-pill);border:1px solid rgba(255,255,255,.22);
  font-size:12px;letter-spacing:.14em;color:rgba(255,255,255,.82);
}
.eyebrow-pill i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:block;}
.hero-title{
  font-size:clamp(2.4rem,5.2vw,4.25rem);font-weight:800;line-height:1.12;
  letter-spacing:-.02em;color:#fff;margin:26px 0 0;
}
.hero-title .kw{display:block;}
.hero-title .kw-tail{display:block;font-size:clamp(1.3rem,2.4vw,2rem);font-weight:700;color:rgba(255,255,255,.78);margin-top:10px;letter-spacing:-.01em;}
.hero-rule{width:64px;height:6px;border-radius:999px;background:var(--accent);margin:22px 0 24px;}
.hero-sub{font-size:17px;color:rgba(255,255,255,.76);max-width:520px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;font-size:13px;color:rgba(255,255,255,.6);}
.hero-facts span.dot{color:rgba(255,255,255,.28);}
.hero-visual{position:relative;border-radius:var(--r-lg);overflow:hidden;aspect-ratio:16/10;border:1px solid rgba(255,255,255,.14);}
.hero-visual img{width:100%;height:100%;object-fit:cover;}
.hero-visual::after{
  content:"";position:absolute;inset:0;background:rgba(10,26,20,.12);
}
.hero-glow{
  position:absolute;right:-60px;bottom:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(201,242,76,.8) 0%,rgba(201,242,76,0) 68%);
  opacity:.08;pointer-events:none;z-index:3;
}

/* ============ 通用区块 ============ */
.section{padding:96px 0;}
.section-ink{background:linear-gradient(160deg,var(--ink),var(--primary));color:#fff;}
.section-ink h2,.section-ink h3{color:#fff;}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;}
.section-ink .eyebrow{color:rgba(255,255,255,.55);}
.h2-x{font-size:clamp(1.75rem,3.2vw,2.6rem);font-weight:700;line-height:1.2;letter-spacing:-.015em;}
.h3-x{font-size:1.35rem;font-weight:600;}
.lead{color:var(--muted);font-size:16.5px;}
.section-ink .lead{color:rgba(255,255,255,.7);}
.divider-line{height:1px;background:var(--line);width:100%;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);padding-bottom:22px;margin-bottom:48px;}
.section-ink .section-head{border-color:var(--line-dark);}

/* ============ 卖点 ============ */
.value-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;}
.value-sticky{position:sticky;top:96px;align-self:start;}
.value-list{border-top:1px solid var(--line);}
.value-item{
  display:grid;grid-template-columns:88px 1fr;gap:20px;padding:26px 0;
  border-bottom:1px solid var(--line);transition:padding-left .22s var(--ease);
}
.value-item:hover{padding-left:8px;}
.value-num{
  font-size:clamp(1.6rem,2.6vw,2.2rem);font-weight:800;color:var(--accent);
  font-variant-numeric:tabular-nums;line-height:1.1;
  text-shadow:0 1px 0 rgba(10,26,20,.06);
  -webkit-text-stroke:.5px var(--primary);
}
.value-item h3{font-size:1.25rem;font-weight:600;margin-bottom:8px;}
.value-item p{color:var(--muted);font-size:15.5px;max-width:620px;}

/* ============ 演示 ============ */
.demo-tabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px;}
.demo-tab{
  height:40px;padding:0 18px;border-radius:var(--r-pill);border:1px solid var(--line);
  background:var(--card);color:var(--muted);font-size:14px;cursor:pointer;
  transition:all .18s var(--ease);
}
.demo-tab:hover{border-color:var(--primary);color:var(--primary);}
.demo-tab.active{background:var(--ink);border-color:var(--ink);color:#fff;}
.demo-grid{display:grid;grid-template-columns:6fr 6fr;gap:40px;align-items:start;}
.step-list{display:grid;gap:0;}
.step-row{
  display:grid;grid-template-columns:44px 1fr;gap:16px;padding:20px 0;
  border-bottom:1px solid var(--line);
}
.step-row:first-child{padding-top:0;}
.step-num{
  width:44px;height:44px;border-radius:12px;background:rgba(14,59,46,.06);
  color:var(--primary);display:flex;align-items:center;justify-content:center;
  font-weight:700;font-variant-numeric:tabular-nums;
}
.step-row h4{font-size:1.05rem;font-weight:600;margin-bottom:4px;}
.step-row p{font-size:14.5px;color:var(--muted);}
.demo-stage{
  position:relative;border-radius:var(--r-lg);overflow:hidden;background:var(--ink);
  padding:12px;border:12px solid var(--ink);aspect-ratio:16/10;
}
.demo-stage img{
  position:absolute;inset:12px;width:calc(100% - 24px);height:calc(100% - 24px);
  object-fit:cover;border-radius:var(--r-md);opacity:0;
  transition:opacity .2s var(--ease);
}
.demo-stage img.active{opacity:1;}

/* ============ 证据 ============ */
.proof-grid{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:start;}
.stat-row{display:flex;gap:56px;flex-wrap:wrap;}
.stat-block{padding:24px 0;}
.stat-num{
  font-size:clamp(3rem,5vw,4.5rem);font-weight:800;line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;
}
.stat-num.accent{color:var(--accent);}
.stat-label{font-size:14px;color:var(--muted);margin-top:12px;max-width:220px;}
.quote-item{border-left:3px solid var(--accent);padding:6px 0 6px 20px;margin-bottom:28px;}
.quote-item p{font-size:16.5px;color:var(--text);}
.quote-item cite{display:block;font-style:normal;font-size:13px;color:var(--muted);margin-top:10px;}
.partner-band{
  border-top:1px solid var(--line);margin-top:56px;padding-top:26px;
  display:flex;flex-wrap:wrap;gap:28px;align-items:center;
  opacity:.45;transition:opacity .2s var(--ease);
}
.partner-band:hover{opacity:1;}
.partner-band span{font-size:14px;letter-spacing:.06em;color:var(--muted);font-weight:600;}

/* ============ 资讯 / 最新信息 ============ */
.news-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:32px;}
.news-main-card,.news-mini{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--shadow-1);overflow:hidden;display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-main-card:hover,.news-mini:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(201,242,76,.35);
}
.news-thumb{position:relative;aspect-ratio:16/9;background:rgba(10,26,20,.08);overflow:hidden;}
.news-thumb img{width:100%;height:100%;object-fit:cover;}
.thumb-fallback{
  position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
  font-size:2rem;font-weight:800;color:var(--accent);background:rgba(10,26,20,.08);
  font-variant-numeric:tabular-nums;
}
.news-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.news-title{
  font-size:1.25rem;font-weight:600;line-height:1.45;color:var(--text);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-title a{color:inherit;}
.news-title a:hover{color:var(--primary);}
.news-mini .news-title{font-size:1.02rem;}
.news-summary{
  font-size:14.5px;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px;}
.time-x{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;}
.news-side{display:flex;flex-direction:column;gap:20px;}
.news-mini{flex-direction:row;align-items:stretch;}
.news-mini .mini-thumb{flex:0 0 108px;background:rgba(10,26,20,.08);position:relative;overflow:hidden;}
.news-mini .mini-thumb img{width:100%;height:100%;object-fit:cover;}
.news-mini .news-body{padding:18px 20px;gap:8px;}
.news-empty{
  min-height:200px;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;border:1px dashed var(--line);border-radius:var(--r-lg);color:var(--muted);
  background:var(--card);
}

/* ============ 价格 ============ */
.table-wrap{overflow-x:auto;border-radius:var(--r-lg);}
.price-table{
  width:100%;min-width:760px;border-collapse:separate;border-spacing:0;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.price-table th,.price-table td{padding:18px 20px;border-bottom:1px solid var(--line);font-size:14.5px;}
.price-table thead th{
  background:transparent;text-align:center;font-weight:600;color:var(--text);
  vertical-align:bottom;font-size:15px;
}
.price-table tbody th{
  text-align:left;font-weight:500;color:var(--muted);font-size:14px;background:transparent;
}
.price-table td{text-align:center;}
.price-table tbody tr:hover th,.price-table tbody tr:hover td{background:rgba(10,26,20,.02);}
.price-table .feat{background:linear-gradient(180deg,var(--ink),var(--primary));color:#fff;}
.price-table thead th.feat{color:#fff;border-radius:0;}
.price-table tbody td.feat{color:#fff;font-weight:500;}
.price-table thead th.feat .plan-name{display:block;font-size:16px;font-weight:700;}
.price-table thead th.feat .plan-tag{font-size:11px;letter-spacing:.14em;color:var(--accent);}
.plan-name{display:block;font-size:15px;font-weight:700;}
.plan-tag{display:block;font-size:11px;letter-spacing:.12em;color:var(--muted);margin-top:6px;}
.price-amount{
  font-size:clamp(1.6rem,2.6vw,2.2rem);font-weight:800;font-variant-numeric:tabular-nums;
  line-height:1.1;margin-top:10px;
}
.price-amount .cur{font-size:.55em;margin-right:2px;vertical-align:6px;}
.price-period{font-size:13px;color:var(--muted);}
.price-table thead th.feat .price-period{color:rgba(255,255,255,.65);}
.mark-yes{display:inline-block;width:12px;height:12px;border-radius:3px;background:var(--accent);}
.mark-no{display:inline-block;width:16px;height:2px;background:var(--line);border-radius:2px;vertical-align:middle;}
.price-foot-note{font-size:13px;color:var(--muted);margin-top:18px;}
.price-table .plan-btn{display:inline-flex;margin-top:6px;}
.plan-actions{margin-top:26px;display:flex;gap:12px;flex-wrap:wrap;}

/* ============ FAQ ============ */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:48px;}
.faq-sticky{position:sticky;top:96px;align-self:start;}
.accordion-x{border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);}
.acc-btn{
  width:100%;background:transparent;border:0;padding:22px 40px 22px 0;text-align:left;
  font-size:17px;font-weight:600;color:var(--text);position:relative;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.acc-btn::before{
  content:"";position:absolute;left:0;top:20px;bottom:20px;width:3px;border-radius:3px;
  background:var(--accent);opacity:0;transition:opacity .2s var(--ease);
}
.acc-btn::after{
  content:"+";position:absolute;right:6px;top:50%;transform:translateY(-50%);
  font-size:22px;font-weight:400;color:var(--muted);transition:transform .2s var(--ease),color .2s var(--ease);
}
.acc-btn:not(.collapsed){color:var(--primary);padding-left:16px;}
.acc-btn:not(.collapsed)::before{opacity:1;}
.acc-btn:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);color:var(--primary);}
.acc-body{padding:0 40px 24px 16px;color:var(--muted);font-size:15.5px;}

/* ============ 结尾 CTA ============ */
.cta-band{
  background:linear-gradient(160deg,var(--ink),var(--primary));color:#fff;
  padding:96px 0;text-align:center;
}
.cta-band h2{color:#fff;font-size:clamp(1.75rem,3.2vw,2.6rem);font-weight:700;line-height:1.25;}
.cta-band p{color:rgba(255,255,255,.68);font-size:14px;margin-top:18px;}
.cta-band .btn-x{margin-top:32px;}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:rgba(255,255,255,.72);padding:72px 0 0;
}
.footer-grid{display:grid;grid-template-columns:4fr 3fr 3fr 2fr;gap:40px;}
.footer-brand .brand-mark{color:#fff;}
.footer-desc{font-size:14px;color:rgba(255,255,255,.55);margin-top:16px;max-width:300px;line-height:1.8;}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.5);font-weight:600;margin-bottom:18px;}
.footer-link{
  display:block;font-size:14.5px;color:rgba(255,255,255,.72);padding:6px 0;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  transition:background-size .18s var(--ease),color .18s var(--ease);width:fit-content;
}
.footer-link:hover{color:var(--accent);background-size:100% 1px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line-dark);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.45);
}

/* ============ 浮动组件 ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1035;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.back-top{
  position:fixed;right:34px;bottom:104px;z-index:1034;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--card);color:var(--primary);
  display:flex;align-items:center;justify-content:center;cursor:pointer;
  box-shadow:var(--shadow-1);opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.back-top.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.back-top:hover{box-shadow:var(--shadow-2);}
.mobile-bar{display:none;}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .hero-grid{grid-template-columns:1fr;}
  .hero{min-height:auto;padding:96px 0;}
  .hero-visual{max-width:640px;}
  .value-grid,.faq-grid,.proof-grid{grid-template-columns:1fr;gap:32px;}
  .value-sticky,.faq-sticky{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .news-grid{grid-template-columns:1fr;}
}
@media (max-width:991px){
  body{padding-left:0;padding-top:64px;}
  .shell-sidebar{
    width:288px;transform:translateX(-100%);
    box-shadow:0 24px 60px -24px rgba(10,26,20,.7);
  }
  .shell-sidebar.open{transform:translateX(0);}
  .topbar{display:flex;}
  .progress-rail{left:0;top:64px;}
  .demo-grid{grid-template-columns:1fr;gap:28px;}
  .section{padding:64px 0;}
  .section-head{margin-bottom:32px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .hero{padding:72px 0;}
  .hero-title{font-size:2.4rem;}
  .hero-title .kw-tail{font-size:1.25rem;}
  .section{padding:64px 0;}
  .container-x{padding:0 20px;}
  .news-mini{flex-direction:column;}
  .news-mini .mini-thumb{flex:none;aspect-ratio:16/9;}
  .footer-grid{grid-template-columns:1fr;}
  .float-cta,.back-top{display:none;}
  .mobile-bar{
    display:flex;align-items:center;gap:12px;
    position:fixed;left:0;right:0;bottom:0;height:56px;z-index:1036;
    background:rgba(10,26,20,.96);border-top:1px solid var(--line-dark);
    padding:0 14px;transition:transform .24s var(--ease);
  }
  .mobile-bar.hide{transform:translateY(110%);}
  .mobile-bar .btn-x{flex:0 0 60%;height:40px;font-size:15px;}
  .mobile-bar a.text-link{color:#fff;font-size:13.5px;}
  .site-footer{padding-bottom:56px;}
  .price-table th,.price-table td{padding:14px 14px;font-size:13.5px;}
  .acc-btn{font-size:16px;padding:18px 36px 18px 0;}
}
@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: article */
:root{
  --ink:#0A1A14;
  --primary:#0E3B2E;
  --primary-2:#14513F;
  --accent:#C9F24C;
  --accent-2:#FF6A3D;
  --paper:#F7F7F3;
  --card:#FFFFFF;
  --text:#0F1A16;
  --muted:#5A6B62;
  --line:#E6E8E2;
  --line-dark:rgba(255,255,255,.10);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --shadow-rest:0 1px 2px rgba(10,26,20,.04),0 1px 0 rgba(10,26,20,.03);
  --shadow-hover:0 18px 40px -18px rgba(10,26,20,.28);
  --ease:cubic-bezier(.2,.8,.2,1);
  --sidebar:248px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Source Han Sans SC','Microsoft YaHei','Inter','Helvetica Neue',Arial,sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .18s var(--ease)}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
h1,h2,h3,h4{margin:0;color:var(--text);letter-spacing:-.01em}
p{margin:0}
button{font-family:inherit}
.container-x{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.num{font-variant-numeric:tabular-nums}

/* ---------- 侧栏 ---------- */
.topbar{
  position:fixed;top:0;left:0;width:var(--sidebar);height:100vh;z-index:1040;
  background:linear-gradient(160deg,var(--ink),var(--primary));
  display:flex;flex-direction:column;
}
.brand-mark{display:flex;flex-direction:column;justify-content:center;gap:2px;text-decoration:none}
.topbar .brand-mark{height:88px;padding:0 24px;border-bottom:1px solid var(--line-dark)}
.brand-main{font-size:22px;font-weight:800;color:#fff;letter-spacing:-.01em;line-height:1.15}
.brand-sub{font-size:12px;letter-spacing:.12em;color:rgba(255,255,255,.58)}
.shell-nav{flex:1;display:flex;flex-direction:column;gap:4px;padding:22px 16px;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;padding-left:16px;border-radius:10px;
  font-size:15px;color:rgba(255,255,255,.72);transition:background .16s var(--ease),color .16s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{color:#fff;background:rgba(255,255,255,.06)}
.nav-item.active::before{content:'';position:absolute;left:0;top:50%;transform:translateY(-50%);width:2px;height:22px;border-radius:2px;background:var(--accent)}
.shell-foot{padding:20px 16px;border-top:1px solid var(--line-dark);display:flex;flex-direction:column;gap:10px}
.shell-note{font-size:12px;line-height:1.6;color:rgba(255,255,255,.42)}
.burger{display:none;width:44px;height:44px;border:0;background:transparent;padding:0;flex-direction:column;align-items:center;justify-content:center;gap:5px;border-radius:10px}
.burger span{display:block;width:20px;height:2px;background:#fff;border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
body.nav-open .burger span:nth-child(1){transform:translateY(7px) rotate(45deg)}
body.nav-open .burger span:nth-child(2){opacity:0}
body.nav-open .burger span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.nav-mask{display:none;position:fixed;inset:0;background:rgba(10,26,20,.5);z-index:1045}

/* ---------- 进度条 ---------- */
.scroll-progress{position:fixed;top:64px;left:0;right:0;height:3px;z-index:1060;pointer-events:none}
.scroll-progress span{display:block;height:100%;width:0;background:var(--accent)}

/* ---------- 主体 ---------- */
.main-area{padding:88px 0 96px}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;border-radius:var(--r-md);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-x.is-primary{background:var(--accent);color:var(--ink)}
.btn-x.is-primary:hover{background:#d5f766;transform:translateY(-1px);box-shadow:0 14px 26px -14px rgba(10,26,20,.45)}
.btn-x.is-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-x.is-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.btn-x.is-ghost-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.4)}
.btn-x.is-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn-x.is-sm{height:40px;padding:0 18px;font-size:14px}
.btn-x.is-lg{height:56px;padding:0 30px;font-size:16px}
.link-sweep{
  color:var(--primary);
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 2px;
  transition:background-size .18s var(--ease),color .18s var(--ease);
}
.link-sweep:hover{background-size:100% 2px;color:var(--ink)}

/* ---------- 徽章 ---------- */
.badge-x{display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;font-size:12px;letter-spacing:.02em;line-height:1}
.badge-x.is-accent{background:var(--accent);color:var(--ink)}
.badge-x.is-ink{background:var(--ink);color:var(--paper)}
.badge-x.is-line{border:1px solid var(--line);color:var(--muted);background:transparent}

/* ---------- 文章头部 ---------- */
.article-head{padding-top:16px}
.breadcrumb-x{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted);margin-bottom:22px}
.breadcrumb-x a{color:var(--muted)}
.breadcrumb-x a:hover{color:var(--primary)}
.breadcrumb-x .sep{opacity:.45}
.breadcrumb-x .now{color:var(--text)}
.article-title{
  font-size:clamp(1.9rem,3.6vw,3rem);font-weight:800;line-height:1.18;letter-spacing:-.02em;
  max-width:920px;margin-bottom:20px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;font-size:13px;color:var(--muted);padding-bottom:28px;border-bottom:1px solid var(--line)}
.article-meta .dot{opacity:.5}

/* ---------- 正文网格 ---------- */
.article-body-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;padding-top:44px}
.article-content{font-size:17px;line-height:1.9;color:#1B2721;min-width:0}
.article-content>*:first-child{margin-top:0}
.article-content h2{
  position:relative;padding-left:16px;margin:56px 0 20px;
  font-size:clamp(1.35rem,2.2vw,1.75rem);font-weight:700;line-height:1.35;scroll-margin-top:96px;
}
.article-content h2::before{content:'';position:absolute;left:0;top:.38em;width:4px;height:.95em;border-radius:2px;background:var(--accent)}
.article-content h3{font-size:1.2rem;font-weight:600;margin:36px 0 12px;scroll-margin-top:96px}
.article-content p{margin:0 0 1.1em}
.article-content strong{color:var(--ink);font-weight:700}
.article-content a{color:var(--primary);background-image:linear-gradient(var(--accent),var(--accent));background-repeat:no-repeat;background-position:0 100%;background-size:100% 2px}
.article-content a:hover{color:var(--ink)}
.article-content ul{list-style:none;margin:0 0 1.2em;padding:0}
.article-content ul>li{position:relative;padding-left:22px;margin-bottom:.5em}
.article-content ul>li::before{content:'';position:absolute;left:0;top:.72em;width:8px;height:8px;border-radius:2px;background:var(--accent)}
.article-content ol{margin:0 0 1.2em;padding-left:1.5em}
.article-content ol>li{margin-bottom:.5em;padding-left:.2em}
.article-content ol>li::marker{color:var(--primary);font-weight:700}
.article-content blockquote{
  margin:28px 0;padding:18px 22px;border-left:4px solid var(--accent);
  background:rgba(14,59,46,.08);border-radius:0 var(--r-md) var(--r-md) 0;color:#233029;
}
.article-content blockquote p:last-child{margin-bottom:0}
.article-content img{border-radius:14px;margin:28px auto;max-width:100%;height:auto}
.article-content figure{margin:28px 0}
.article-content figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-content table{width:100%;border-collapse:collapse;margin:28px 0;font-variant-numeric:tabular-nums}
.article-content th{background:var(--ink);color:var(--paper);font-size:14px;font-weight:600;text-align:left;padding:12px 14px}
.article-content td{padding:12px 14px;border-bottom:1px solid var(--line);font-size:15px}
.article-content tbody tr:nth-child(even){background:rgba(10,26,20,.02)}
.article-content hr{border:0;border-top:1px solid var(--line);margin:40px 0}

/* ---------- 目录 ---------- */
.toc{display:none}
.toc-title{font-size:12px;letter-spacing:.18em;color:var(--muted);margin-bottom:14px}
.toc-list{list-style:none;margin:0;padding:0}
.toc-list a{display:block;padding:7px 0 7px 12px;border-left:1px solid var(--line);color:var(--muted);font-size:13px;line-height:1.55;transition:color .16s var(--ease),border-color .16s var(--ease)}
.toc-list a:hover{color:var(--primary)}
.toc-list a.is-active{color:var(--primary);font-weight:600;border-left:2px solid var(--accent)}
.toc-list a.lv3{padding-left:24px;font-size:12.5px}

/* ---------- 空态 ---------- */
.empty-state{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:48px 28px;text-align:center;box-shadow:var(--shadow-rest);
}
.empty-state h2{font-size:1.4rem;margin:12px 0 10px}
.empty-state p{color:var(--muted);max-width:520px;margin:0 auto 22px}

/* ---------- 文章尾部 ---------- */
.article-foot{margin-top:72px;padding-top:32px;border-top:1px solid var(--line)}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.tag-pill{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--card);font-size:13px;color:var(--muted);
  transition:border-color .18s var(--ease),color .18s var(--ease)
}
.tag-pill:hover{border-color:var(--accent);color:var(--ink)}
.section-head-x{display:flex;align-items:baseline;justify-content:space-between;gap:16px;border-top:1px solid var(--line);padding-top:20px;margin-bottom:24px}
.section-head-x h2{font-size:1.3rem;font-weight:700}
.related-grid{display:grid;grid-template-columns:1fr;gap:24px}
.news-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-rest);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(201,242,76,.35)}
.news-card .thumb{aspect-ratio:16/9;overflow:hidden;background:rgba(10,26,20,.06)}
.news-card .thumb img{width:100%;height:100%;object-fit:cover}
.news-card .card-body-x{padding:22px;display:flex;flex-direction:column;gap:12px;flex:1}
.news-card h3{font-size:1.05rem;font-weight:600;line-height:1.5}
.news-card h3 a{color:var(--text)}
.news-card h3 a:hover{color:var(--primary)}
.news-card .desc{font-size:14px;color:var(--muted);line-height:1.75}
.news-card .stamp{font-size:13px;color:var(--muted);margin-top:auto;font-variant-numeric:tabular-nums}
.back-row{display:flex;align-items:center;gap:20px;flex-wrap:wrap;margin-top:40px}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;margin-top:64px;padding:80px 28px;border-radius:var(--r-lg);
  background:linear-gradient(160deg,var(--ink),var(--primary));text-align:center;color:#fff;
}
.cta-band h2{color:#fff;font-size:clamp(1.5rem,2.6vw,2.1rem);font-weight:700;line-height:1.3;margin-bottom:14px}
.cta-band p{color:rgba(255,255,255,.66);font-size:14px;margin-bottom:26px}

/* ---------- 浮动按钮 ---------- */
.float-cta{
  position:fixed;right:24px;bottom:24px;z-index:1030;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.float-cta.show{opacity:1;transform:none;pointer-events:auto}
.to-top{
  position:fixed;right:24px;bottom:88px;width:40px;height:40px;border-radius:50%;
  border:1px solid var(--line);background:var(--card);color:var(--primary);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:16px;z-index:1030;
  opacity:0;pointer-events:none;transition:opacity .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto}
.to-top:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px}
.site-footer .brand-mark{height:auto;padding:0;border:0;flex-direction:row;align-items:baseline;gap:6px;margin-bottom:14px}
.site-footer .brand-main{font-size:20px}
.site-footer .brand-sub{font-size:12px;color:rgba(255,255,255,.55)}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.55);max-width:330px}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:#fff;margin-bottom:16px;font-weight:600}
.footer-link{
  display:block;width:fit-content;font-size:14px;color:rgba(255,255,255,.66);padding:6px 0;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  transition:color .18s var(--ease),background-size .18s var(--ease);
}
.footer-link:hover{color:var(--accent);background-size:100% 1px}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  padding:20px 0;border-top:1px solid var(--line-dark);font-size:13px;color:var(--muted);
}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media(min-width:1200px){
  body{padding-left:var(--sidebar)}
  .main-area{padding-top:56px}
  .article-body-grid{grid-template-columns:minmax(0,780px) 240px;justify-content:space-between}
  .toc{display:block;position:sticky;top:96px;align-self:start}
  .related-grid{grid-template-columns:repeat(3,1fr)}
  .scroll-progress{top:0;left:var(--sidebar)}
}
@media(min-width:768px) and (max-width:1199px){
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:1199px){
  .topbar{
    flex-direction:row;align-items:center;justify-content:space-between;
    width:100%;height:64px;padding:0 20px;
  }
  .topbar .brand-mark{height:auto;padding:0;border:0}
  .topbar .brand-main{font-size:18px}
  .topbar .brand-sub{font-size:10px}
  .burger{display:flex}
  .shell-nav{
    position:fixed;top:0;left:0;width:288px;height:100vh;z-index:1050;
    padding:80px 16px 24px;overflow-y:auto;
    background:linear-gradient(160deg,var(--ink),var(--primary));
    transform:translateX(-100%);
    transition:transform .3s var(--ease);
  }
  body.nav-open .shell-nav{transform:translateX(0)}
  body.nav-open .nav-mask{display:block}
  .shell-foot{display:none}
  .nav-item{height:46px;font-size:15px}
}
@media(max-width:991px){
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:767px){
  body{font-size:16px}
  .container-x{padding:0 20px}
  .main-area{padding:80px 0 72px}
  .article-content{font-size:16px;line-height:1.9}
  .article-content table{display:block;overflow-x:auto;white-space:nowrap}
  .cta-band{padding:56px 20px;margin-top:48px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .float-cta{
    left:12px;right:12px;bottom:12px;display:flex;align-items:center;gap:12px;
    padding:8px 10px;border-radius:999px;background:var(--card);
    box-shadow:0 14px 30px -14px rgba(10,26,20,.4);border:1px solid var(--line);
  }
  .float-cta .btn-x{flex:0 0 60%;height:44px}
  .float-cta .mini-link{font-size:13px;color:var(--muted)}
  .to-top{right:16px;bottom:88px}
}
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#0A1A14;
  --primary:#0E3B2E;
  --primary-2:#14513F;
  --accent:#C9F24C;
  --accent-2:#FF6A3D;
  --paper:#F7F7F3;
  --card:#FFFFFF;
  --text:#0F1A16;
  --muted:#5A6B62;
  --line:#E6E8E2;
  --line-dark:rgba(255,255,255,.10);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --pill:999px;
  --sh-rest:0 1px 2px rgba(10,26,20,.04),0 1px 0 rgba(10,26,20,.03);
  --sh-hover:0 18px 40px -18px rgba(10,26,20,.28);
  --ease:cubic-bezier(.2,.8,.2,1);
  --sidebar-w:248px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-left:var(--sidebar-w);
  background:var(--paper);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Source Han Sans SC','Microsoft YaHei','Inter','Helvetica Neue',Arial,sans-serif;
  font-size:17px;
  line-height:1.85;
  overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:var(--primary);text-decoration:none}
button{font:inherit}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
[id]{scroll-margin-top:36px}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
  border-radius:4px;
}
.container-x{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- 侧栏 ---------- */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--sidebar-w);
  background:linear-gradient(160deg,var(--ink) 0%,var(--primary) 100%);
  display:flex;flex-direction:column;
  z-index:1040;
  transition:transform .28s var(--ease);
}
.side-brand{height:88px;flex:0 0 auto;display:flex;align-items:center;padding:0 20px;border-bottom:1px solid var(--line-dark)}
.brand-mark{display:flex;flex-direction:column;line-height:1;color:#fff;text-decoration:none}
.brand-main{font-size:1.35rem;font-weight:800;letter-spacing:-.01em}
.brand-sub{font-size:.72rem;letter-spacing:.22em;color:rgba(255,255,255,.58);margin-top:5px}
.side-nav{flex:1 1 auto;display:flex;flex-direction:column;gap:4px;padding:16px 12px;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;gap:10px;
  height:44px;padding:0 16px;border-radius:10px;
  color:rgba(255,255,255,.72);font-size:15px;
  transition:background .16s var(--ease),color .16s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.current{background:rgba(255,255,255,.06);color:#fff}
.nav-item.current::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:20px;border-radius:2px;background:var(--accent);
}
.nav-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:6px;
  display:flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:700;
  background:rgba(255,255,255,.10);color:rgba(255,255,255,.85);
}
.nav-item.current .nav-icon{background:var(--accent);color:var(--ink)}
.side-foot{flex:0 0 auto;padding:16px 12px 20px;border-top:1px solid var(--line-dark)}
.side-cta{
  display:flex;align-items:center;justify-content:center;gap:8px;
  height:44px;border-radius:var(--pill);
  background:var(--accent);color:var(--ink);
  font-size:14px;font-weight:700;
  transition:background .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.side-cta:hover{background:#d6fb63;color:var(--ink);transform:translateY(-1px);box-shadow:0 12px 24px -14px rgba(201,242,76,.8)}
.cta-mini{display:none}
.side-note{margin:12px 0 0;font-size:12px;letter-spacing:.04em;text-align:center;color:rgba(255,255,255,.45)}

/* ---------- 移动顶栏 ---------- */
.topbar{
  display:none;position:fixed;top:0;left:0;right:0;height:64px;
  align-items:center;justify-content:space-between;
  padding:0 20px;background:var(--card);border-bottom:1px solid var(--line);
  z-index:1030;
}
.topbar .brand-mark{color:var(--ink)}
.topbar .brand-sub{color:var(--muted)}
.burger{
  width:44px;height:44px;border:1px solid var(--line);border-radius:10px;
  background:#fff;cursor:pointer;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.burger span{display:block;width:18px;height:2px;border-radius:2px;background:var(--ink);transition:transform .2s var(--ease),opacity .2s var(--ease)}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,26,20,.5);
  opacity:0;visibility:hidden;z-index:1035;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);
}
.drawer-mask.show{opacity:1;visibility:visible}

/* ---------- 进度条 ---------- */
.progress-bar-x{
  position:fixed;top:0;left:var(--sidebar-w);height:3px;width:0;
  background:var(--accent);z-index:1050;transition:width .1s linear;
}

/* ---------- 页头带 ---------- */
.page-hero{
  position:relative;overflow:hidden;
  min-height:300px;display:flex;align-items:center;
  padding:72px 0 64px;color:#fff;
  background:linear-gradient(160deg,rgba(10,26,20,.90),rgba(14,59,46,.82)),
             url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
}
.page-hero::after{
  content:"";position:absolute;right:-70px;bottom:-90px;width:340px;height:340px;
  background:radial-gradient(circle,rgba(201,242,76,.14),transparent 68%);
  pointer-events:none;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:20px}
.crumb a{color:rgba(255,255,255,.82)}
.crumb a:hover{color:var(--accent)}
.page-hero h1{
  font-size:clamp(2rem,4.2vw,3.2rem);
  font-weight:800;line-height:1.14;letter-spacing:-.02em;
  margin:0 0 18px;
}
.hero-bar{width:64px;height:6px;border-radius:999px;background:var(--accent);margin:0 0 20px}
.page-hero .lede{max-width:700px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.78)}

/* ---------- 通用板块 ---------- */
.section{padding:96px 0}
.cat-body{padding:72px 0 96px}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:32px;
}
.sec-head h2{font-size:clamp(1.4rem,2.2vw,1.9rem);font-weight:700}
.link-sweep{
  color:var(--primary);font-size:14px;font-weight:600;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 2px;
  padding-bottom:2px;
  transition:background-size .18s var(--ease),color .18s var(--ease);
}
.link-sweep:hover{background-size:100% 2px;color:var(--primary-2)}

/* ---------- 目录 ---------- */
.toc-card{
  position:sticky;top:96px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-rest);
}
.toc-title{font-size:12px;letter-spacing:.18em;color:var(--muted);margin:0 0 14px}
.toc-link{
  display:block;position:relative;
  padding:9px 12px 9px 14px;border-radius:8px;
  font-size:14px;line-height:1.5;color:var(--muted);
  transition:color .16s var(--ease),background .16s var(--ease);
}
.toc-link:hover{color:var(--primary);background:rgba(14,59,46,.05)}
.toc-link.active{color:var(--primary);font-weight:600;background:rgba(14,59,46,.05)}
.toc-link.active::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:2px;height:16px;border-radius:2px;background:var(--accent);
}

/* ---------- 分节长文 ---------- */
.cat-section + .cat-section{margin-top:56px;padding-top:56px;border-top:1px solid var(--line)}
.cat-section h2{
  position:relative;padding-left:18px;
  font-size:clamp(1.45rem,2.4vw,2rem);font-weight:700;line-height:1.25;
  margin:0 0 18px;
}
.cat-section h2::before{
  content:"";position:absolute;left:0;top:.26em;width:4px;height:1em;border-radius:2px;background:var(--accent);
}
.cat-section p{margin:0 0 16px;font-size:16.5px;line-height:1.9;color:#26332d}
.cat-section p:last-child{margin-bottom:0}

.key-list{list-style:none;margin:22px 0 0;padding:0;display:grid;gap:10px}
.key-list li{position:relative;padding-left:22px;font-size:15.5px;line-height:1.8;color:#33413a}
.key-list li::before{
  content:"";position:absolute;left:0;top:.65em;width:8px;height:8px;border-radius:2px;
  background:var(--accent);box-shadow:0 0 0 1px rgba(10,26,20,.06);
}

.step-list{list-style:none;margin:22px 0 0;padding:0;counter-reset:step}
.step-list li{
  position:relative;padding:14px 0 14px 46px;
  border-top:1px solid var(--line);
  font-size:15.5px;line-height:1.8;color:#33413a;
}
.step-list li:last-child{border-bottom:1px solid var(--line)}
.step-list li::before{
  counter-increment:step;content:counter(step,decimal-leading-zero);
  position:absolute;left:0;top:14px;
  font-size:15px;font-weight:800;color:var(--primary);
  font-variant-numeric:tabular-nums;
}

.fig-card{
  margin:32px 0;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--sh-rest);
}
.fig-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.fig-card figcaption{padding:12px 20px 16px;font-size:13px;line-height:1.7;color:var(--muted);text-align:center}

/* ---------- 相关卡片 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.related-card{
  display:block;color:inherit;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:24px;box-shadow:var(--sh-rest);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.related-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--sh-hover);
  border-color:rgba(201,242,76,.35);
}
.badge-x{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--pill);font-size:12px;letter-spacing:.02em;margin-bottom:14px;
}
.badge-accent{background:var(--accent);color:var(--ink)}
.badge-ink{background:var(--ink);color:var(--paper)}
.badge-line{border:1px solid var(--line);color:var(--muted);background:transparent}
.related-card h3{font-size:1.12rem;font-weight:600;line-height:1.45;margin:0 0 10px}
.related-card p{font-size:14.5px;line-height:1.75;color:var(--muted);margin:0}

/* ---------- 按钮 ---------- */
.btn-x{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 28px;border-radius:var(--r-md);
  border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),
             box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn-accent{background:var(--accent);color:var(--ink)}
.btn-accent:hover{background:#d6fb63;color:var(--ink);transform:translateY(-1px);box-shadow:0 14px 30px -14px rgba(201,242,76,.85)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:var(--paper)}
.btn-ghost-light{border-color:rgba(255,255,255,.4);color:#fff;background:transparent}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff}

/* ---------- 结尾 CTA ---------- */
.end-cta{
  background:linear-gradient(160deg,var(--ink) 0%,var(--primary) 100%);
  color:#fff;text-align:center;padding:96px 0;
}
.end-cta h2{
  font-size:clamp(1.6rem,3vw,2.4rem);font-weight:700;line-height:1.25;
  margin:0 0 28px;
}
.end-cta p{margin:18px 0 0;font-size:13px;color:rgba(255,255,255,.6)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:48px}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:#fff;font-weight:600;margin:0 0 16px}
.footer-link{
  display:block;width:fit-content;padding:6px 0;
  font-size:14px;color:rgba(255,255,255,.68);
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  transition:color .18s var(--ease),background-size .18s var(--ease);
}
.footer-link:hover{color:var(--accent);background-size:100% 1px}
.footer-desc{margin:18px 0 0;max-width:330px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.58)}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  padding:20px 0;border-top:1px solid var(--line-dark);
  font-size:13px;color:rgba(255,255,255,.45);
}
.site-footer .brand-mark{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.5)}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border-radius:50%;border:1px solid rgba(255,255,255,.14);
  background:var(--ink);color:var(--accent);cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  z-index:1020;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .4s var(--ease),transform .4s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:992px) and (max-width:1199.98px){
  :root{--sidebar-w:76px}
  .sidebar .nav-text,
  .sidebar .cta-full,
  .sidebar .side-note,
  .sidebar .brand-sub{display:none}
  .sidebar .cta-mini{display:block}
  .side-brand{justify-content:center;padding:0}
  .side-nav{padding:16px 10px;align-items:center}
  .nav-item{justify-content:center;width:46px;padding:0}
  .side-cta{width:46px;padding:0}
}
@media (max-width:991.98px){
  body{padding-left:0;padding-top:64px}
  .sidebar{width:288px;transform:translateX(-100%);box-shadow:0 0 48px rgba(10,26,20,.35)}
  .sidebar.open{transform:translateX(0)}
  .topbar{display:flex}
  .progress-bar-x{left:0;top:64px}
  .toc-card{position:static;top:auto;margin-bottom:8px}
  .page-hero{padding:56px 0 48px;min-height:240px}
}
@media (min-width:992px){
  .drawer-mask{display:none}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .cat-body{padding:56px 0 72px}
  .related-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container-x{padding:0 20px}
  .section{padding:64px 0}
  .cat-section + .cat-section{margin-top:44px;padding-top:44px}
  .cat-section p{font-size:16px}
  .page-hero h1{font-size:2.4rem}
  .end-cta{padding:72px 0}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none;transition:none}
  .related-card:hover,.btn-x:hover,.side-cta:hover{transform:none}
  *{animation:none!important;transition-duration:.01ms!important}
}

/* roulang page: category2 */
*,*::before,*::after{box-sizing:border-box}
:root{
  --ink:#0A1A14;--primary:#0E3B2E;--primary-2:#14513F;
  --accent:#C9F24C;--accent-2:#FF6A3D;
  --paper:#F7F7F3;--card:#FFFFFF;
  --text:#0F1A16;--muted:#5A6B62;
  --line:#E6E8E2;--line-dark:rgba(255,255,255,.10);
  --r-sm:8px;--r-md:12px;--r-lg:18px;
  --shadow-rest:0 1px 2px rgba(10,26,20,.04),0 1px 0 rgba(10,26,20,.03);
  --shadow-hover:0 18px 40px -18px rgba(10,26,20,.28);
  --ease:cubic-bezier(.2,.8,.2,1);
  --shell:248px;
  --font-cn:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Source Han Sans SC','Microsoft YaHei',sans-serif;
  --font-num:'Inter','Helvetica Neue',Arial,sans-serif;
}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;background:var(--paper);color:var(--text);
  font-family:var(--font-cn);font-size:16.5px;line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--primary);text-decoration:none}
h1,h2,h3,h4{margin:0;color:var(--ink);letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.container-x{width:100%;max-width:1180px;margin:0 auto;padding:0 24px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- 侧栏 / 顶部栏 ---------- */
.app-shell{
  position:fixed;top:0;left:0;bottom:0;width:var(--shell);z-index:60;
  background:linear-gradient(160deg,#0A1A14 0%,#0E3B2E 100%);
  display:flex;flex-direction:column;
}
.topbar{
  height:88px;flex:0 0 88px;display:flex;align-items:center;justify-content:space-between;
  padding:0 20px;border-bottom:1px solid var(--line-dark);
}
.brand-mark{display:flex;flex-direction:column;line-height:1.1;text-decoration:none}
.brand-main{font-size:22px;font-weight:800;color:#fff;letter-spacing:-.01em}
.brand-sub{font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.14em;margin-top:3px}
.burger{
  display:none;width:42px;height:42px;border:1px solid var(--line-dark);border-radius:var(--r-md);
  background:transparent;flex-direction:column;justify-content:center;align-items:center;gap:5px;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.side-nav{flex:1 1 auto;display:flex;flex-direction:column;gap:4px;padding:20px 14px;overflow-y:auto}
.nav-item{
  position:relative;display:flex;align-items:center;height:44px;padding-left:16px;
  border-radius:10px;color:rgba(255,255,255,.72);font-size:15px;font-weight:500;
  transition:background .16s var(--ease),color .16s var(--ease);
}
.nav-item:hover{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active{background:rgba(255,255,255,.06);color:#fff}
.nav-item.active::before{
  content:"";position:absolute;left:0;top:11px;bottom:11px;width:2px;
  background:var(--accent);border-radius:999px;
}
.side-foot{flex:0 0 auto;padding:18px 18px 22px;border-top:1px solid var(--line-dark)}
.side-cta{display:block;text-align:center;font-size:14px;font-weight:700;padding:12px 16px;border-radius:999px}
.side-note{margin-top:12px;font-size:12px;line-height:1.6;color:rgba(255,255,255,.5)}

.btn-accent{
  background:var(--accent);color:var(--ink);border:0;border-radius:var(--r-md);
  font-weight:700;transition:transform .18s var(--ease),box-shadow .18s var(--ease),filter .18s var(--ease);
}
.btn-accent:hover{filter:brightness(1.04);transform:translateY(-1px);box-shadow:0 12px 26px -12px rgba(10,26,20,.45);color:var(--ink)}
.btn-ghost{
  background:transparent;color:var(--ink);border:1px solid var(--ink);border-radius:var(--r-md);
  font-weight:600;transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.on-dark.btn-ghost{color:#fff;border-color:rgba(255,255,255,.55)}
.on-dark.btn-ghost:hover{background:#fff;color:var(--ink)}
.btn-accent,.btn-ghost{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:0 26px;height:48px;font-size:15px}

.nav-overlay{
  position:fixed;inset:0;background:rgba(10,26,20,.5);opacity:0;visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease);z-index:55;
}
.nav-overlay.show{opacity:1;visibility:visible}

/* ---------- 滚动进度 / 回到顶部 ---------- */
.scroll-bar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--accent);z-index:90;transition:width .08s linear}
.to-top{
  position:fixed;right:24px;bottom:32px;width:40px;height:40px;border-radius:50%;
  background:var(--ink);color:#fff;border:0;display:grid;place-items:center;cursor:pointer;
  opacity:0;visibility:hidden;transform:translateY(12px);z-index:70;
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:var(--primary-2)}

/* ---------- 页头带 ---------- */
.page-hero{padding:40px 0 8px}
.page-hero-inner{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  min-height:clamp(240px,26vw,320px);display:flex;flex-direction:column;justify-content:flex-end;
  padding:clamp(26px,3.6vw,44px);color:#fff;
  background-image:linear-gradient(160deg,rgba(10,26,20,.78),rgba(14,59,46,.72)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.68);margin-bottom:18px}
.crumb a{color:rgba(255,255,255,.68)}
.crumb a:hover{color:#fff}
.crumb .sep{opacity:.5}
.crumb .current{color:var(--accent);font-weight:600}
.page-hero h1{
  color:#fff;font-size:clamp(1.9rem,3.6vw,2.9rem);font-weight:800;line-height:1.16;letter-spacing:-.02em;
}
.h1-bar{display:block;width:64px;height:6px;border-radius:999px;background:var(--accent);margin:18px 0 16px}
.page-hero .lead{max-width:720px;font-size:15.5px;line-height:1.85;color:rgba(255,255,255,.82)}

/* ---------- 通用板块 ---------- */
.section{padding:72px 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:40px}
.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;margin-bottom:12px}
.section-head h2{font-size:clamp(1.6rem,2.6vw,2.1rem);font-weight:700;line-height:1.25}
.section-head .sub{font-size:14px;color:var(--muted);max-width:420px}

/* ---------- 瀑布卡片 ---------- */
.masonry{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.masonry-col{display:flex;flex-direction:column;gap:20px}
.masonry-col.offset{margin-top:56px}
.f-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:26px;box-shadow:var(--shadow-rest);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.f-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(201,242,76,.35)}
.f-icon{
  width:46px;height:46px;border-radius:var(--r-md);display:grid;place-items:center;
  background:rgba(201,242,76,.22);color:var(--primary);margin-bottom:18px;
}
.f-icon svg{width:22px;height:22px}
.f-card h3{font-size:1.22rem;font-weight:650;margin-bottom:14px}
.f-card ul{display:flex;flex-direction:column;gap:10px;margin-bottom:22px}
.f-card li{position:relative;padding-left:16px;font-size:14.5px;line-height:1.78;color:var(--muted)}
.f-card li::before{content:"";position:absolute;left:0;top:11px;width:6px;height:6px;border-radius:2px;background:var(--accent)}
.f-note{font-size:14.5px;line-height:1.8;color:var(--muted);margin-bottom:22px}
.f-link{
  margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:700;color:var(--primary);
}
.f-link svg{width:14px;height:14px;transition:transform .18s var(--ease)}
.f-link:hover{color:var(--primary-2)}
.f-link:hover svg{transform:translateX(3px)}
.tag-cell{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.tag{font-size:12.5px;padding:5px 12px;border-radius:999px;background:rgba(14,59,46,.06);color:var(--primary);border:1px solid var(--line)}

/* ---------- 场景标签条 ---------- */
.scene-strip{border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0}
.scene-list{display:flex;flex-wrap:wrap;gap:12px}
.scene-pill{
  display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--card);font-size:14px;color:var(--text);
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.scene-pill:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-rest)}
.scene-pill b{color:var(--primary);font-weight:700}
.scene-text{margin-top:20px;font-size:14.5px;color:var(--muted);max-width:820px}

/* ---------- 图文分栏 ---------- */
.split{display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center}
.split-media{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);background:var(--card)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.split-body h2{font-size:clamp(1.5rem,2.4vw,2rem);font-weight:700;line-height:1.28;margin-bottom:18px}
.split-body p{font-size:15.5px;color:var(--muted);line-height:1.9;margin-bottom:16px}
.check-list{display:flex;flex-direction:column;gap:12px;margin-top:26px}
.check-list li{position:relative;padding-left:30px;font-size:15px;line-height:1.75}
.check-list li::before{
  content:"";position:absolute;left:0;top:8px;width:12px;height:12px;border-radius:3px;background:var(--accent);
}

/* ---------- 步骤路径 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:8px}
.step{position:relative;padding:26px 24px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.step-no{font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:1.9rem;font-weight:800;color:var(--primary);line-height:1;margin-bottom:16px;display:block}
.step h3{font-size:1.08rem;font-weight:650;margin-bottom:10px}
.step p{font-size:14.5px;color:var(--muted);line-height:1.8}

/* ---------- 相关内容 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.rel-card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-rest);display:flex;flex-direction:column;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(201,242,76,.35)}
.rel-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.rel-body{padding:22px 24px 26px;display:flex;flex-direction:column;flex:1 1 auto}
.badge-pill{display:inline-block;font-size:12px;letter-spacing:.02em;padding:4px 12px;border-radius:999px;background:var(--accent);color:var(--ink);font-weight:700;margin-bottom:14px;align-self:flex-start}
.rel-body h3{font-size:1.06rem;font-weight:650;line-height:1.5;margin-bottom:10px}
.rel-body p{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:16px}
.rel-body .f-link{margin-top:auto}

/* ---------- 结尾 CTA ---------- */
.cta-band{
  background:linear-gradient(160deg,#0A1A14 0%,#0E3B2E 100%);
  padding:96px 0;text-align:center;color:#fff;
}
.cta-band h2{color:#fff;font-size:clamp(1.6rem,2.8vw,2.2rem);font-weight:700;line-height:1.3;margin-bottom:18px}
.cta-band p{font-size:14.5px;color:rgba(255,255,255,.72);margin-bottom:32px}
.cta-band .btn-accent{height:56px;padding:0 34px;border-radius:999px;font-size:16px}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.7);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.footer-brand .brand-main{color:#fff;font-size:20px}
.footer-brand .brand-sub{color:var(--accent);letter-spacing:.14em}
.footer-desc{margin-top:16px;font-size:13.5px;line-height:1.85;color:rgba(255,255,255,.6);max-width:300px}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.5);font-weight:600;margin-bottom:18px}
.footer-link{
  display:inline-block;font-size:14px;color:rgba(255,255,255,.72);margin-bottom:12px;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;background-position:0 100%;background-size:0 1px;
  transition:background-size .18s var(--ease),color .18s var(--ease);
}
.footer-col .footer-link{display:block}
.footer-link:hover{color:var(--accent);background-size:100% 1px}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid var(--line-dark);padding:22px 0;font-size:13px;color:rgba(255,255,255,.45);
}

/* ---------- 进入动画 ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .38s var(--ease),transform .38s var(--ease)}
.reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:992px){body{padding-left:var(--shell)} .scroll-bar{left:var(--shell)}}
@media (max-width:1199.98px) and (min-width:992px){
  .section{padding:64px 0}
  .split{gap:36px}
}
@media (max-width:991.98px){
  body{padding-left:0;padding-top:64px}
  .app-shell{
    flex-direction:row;align-items:center;height:64px;width:auto;right:0;bottom:auto;
    padding:0 16px;z-index:80;
  }
  .topbar{height:64px;flex:1 1 auto;padding:0;border-bottom:0}
  .burger{display:flex}
  .side-nav{
    position:fixed;top:0;left:-288px;width:288px;height:100vh;z-index:85;
    background:linear-gradient(160deg,#0A1A14 0%,#0E3B2E 100%);
    padding:24px 14px;transition:left .3s var(--ease);display:block;
  }
  .app-shell.open .side-nav{left:0}
  .side-nav .brand-mark{padding:0 6px 20px;border-bottom:1px solid var(--line-dark);margin-bottom:16px}
  .side-foot{display:none}
  .section{padding:56px 0}
  .masonry{grid-template-columns:1fr}
  .masonry-col.offset{margin-top:0}
  .split{grid-template-columns:1fr;gap:28px}
  .steps{grid-template-columns:1fr;gap:0}
  .rel-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .cta-band{padding:72px 0}
}
@media (max-width:767.98px){
  body{font-size:16px}
  .container-x{padding:0 20px}
  .section{padding:56px 0}
  .page-hero{padding:24px 0 0}
  .page-hero-inner{padding:24px 20px 26px}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;margin-bottom:28px}
  .section-head .sub{max-width:none}
  .rel-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column}
  .to-top{right:16px;bottom:20px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0A1A14;
  --primary:#0E3B2E;
  --primary-2:#14513F;
  --accent:#C9F24C;
  --accent-2:#FF6A3D;
  --paper:#F7F7F3;
  --card:#FFFFFF;
  --text:#0F1A16;
  --muted:#5A6B62;
  --line:#E6E8E2;
  --line-dark:rgba(255,255,255,.10);
  --r-sm:8px;
  --r-md:12px;
  --r-lg:18px;
  --shadow-1:0 1px 2px rgba(10,26,20,.04), 0 1px 0 rgba(10,26,20,.03);
  --shadow-2:0 18px 40px -18px rgba(10,26,20,.28);
  --ease:cubic-bezier(.2,.8,.2,1);
  --side-w:248px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:'HarmonyOS Sans SC','PingFang SC','Noto Sans SC','Source Han Sans SC','Microsoft YaHei','Inter','Helvetica Neue',Arial,sans-serif;
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a{
  color:var(--primary);
  text-decoration:none;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 2px;
  transition:background-size .18s var(--ease), color .18s var(--ease);
}
a:hover{background-size:100% 2px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px;}
.num,.stat-num,.price-num{font-variant-numeric:tabular-nums;}

/* ============ 进度条 ============ */
.progress-track{position:fixed;top:0;left:0;right:0;height:3px;background:transparent;z-index:1200;}
.progress-fill{height:3px;width:0;background:var(--accent);transition:width .1s linear;}

/* ============ 侧栏 ============ */
.sidebar{
  position:fixed;top:0;left:0;bottom:0;width:var(--side-w);
  background:linear-gradient(160deg,var(--ink) 0%,var(--primary) 100%);
  color:#fff;z-index:1100;
  display:flex;flex-direction:column;
  overflow-y:auto;
  transform:translateX(-100%);
  transition:transform .28s var(--ease);
}
.sidebar.open{transform:translateX(0);}
.side-logo{
  height:88px;display:flex;align-items:center;padding:0 20px;
  border-bottom:1px solid var(--line-dark);flex:0 0 auto;
}
.brand-mark{
  display:flex;flex-direction:column;line-height:1.1;
  background-image:none;text-decoration:none;
}
.brand-main{font-size:1.35rem;font-weight:800;letter-spacing:-.01em;color:#fff;}
.brand-sub{font-size:.72rem;letter-spacing:.16em;color:var(--accent);text-transform:uppercase;}
.side-nav{padding:18px 12px;display:flex;flex-direction:column;gap:4px;flex:1 1 auto;}
.side-link{
  display:flex;align-items:center;gap:12px;
  height:44px;padding:0 16px;border-radius:10px;
  color:rgba(255,255,255,.72);font-size:15px;
  background-image:none;position:relative;
  transition:background .16s var(--ease), color .16s var(--ease);
}
.side-link .ic{
  width:22px;height:22px;flex:0 0 22px;border-radius:6px;
  background:rgba(255,255,255,.09);color:rgba(255,255,255,.8);
  font-size:11px;display:flex;align-items:center;justify-content:center;font-weight:700;
}
.side-link:hover{background:rgba(255,255,255,.06);color:#fff;}
.side-link.active{
  background:rgba(255,255,255,.06);color:#fff;
}
.side-link.active::before{
  content:"";position:absolute;left:0;top:10px;bottom:10px;width:2px;
  background:var(--accent);border-radius:2px;
}
.side-link.active .ic{background:var(--accent);color:var(--ink);}
.side-foot{
  padding:16px 16px 22px;border-top:1px solid var(--line-dark);flex:0 0 auto;
}
.side-cta{width:100%;height:44px;font-size:14px;}
.side-note{font-size:12px;color:rgba(255,255,255,.5);margin-top:12px;line-height:1.6;}

/* ============ 顶部栏（移动端） ============ */
.topbar{
  display:flex;align-items:center;justify-content:space-between;
  height:64px;padding:0 20px;
  background:linear-gradient(160deg,var(--ink) 0%,var(--primary) 100%);
  position:fixed;top:0;left:0;right:0;z-index:1150;
}
.topbar .brand-main{font-size:1.15rem;}
.topbar .brand-sub{font-size:.62rem;}
.burger{
  width:42px;height:42px;border:1px solid var(--line-dark);border-radius:10px;
  background:transparent;display:flex;flex-direction:column;justify-content:center;
  align-items:center;gap:5px;cursor:pointer;
}
.burger span{display:block;width:18px;height:2px;background:#fff;border-radius:2px;transition:.2s var(--ease);}
.drawer-mask{
  position:fixed;inset:0;background:rgba(10,26,20,.5);z-index:1090;
  opacity:0;pointer-events:none;transition:opacity .24s var(--ease);
}
.drawer-mask.show{opacity:1;pointer-events:auto;}

/* ============ 主内容 ============ */
main{display:block;}
.container-x{max-width:1180px;margin:0 auto;padding:0 24px;width:100%;}
.sec{padding:96px 0;}
.sec + .sec{border-top:1px solid var(--line);}
.sec-head{margin-bottom:44px;}
.eyebrow{
  font-size:12px;letter-spacing:.18em;color:var(--muted);text-transform:uppercase;
  margin-bottom:14px;font-weight:600;
}
.sec-head h2{font-size:clamp(1.75rem,3.2vw,2.6rem);line-height:1.2;font-weight:700;}
.sec-desc{color:var(--muted);margin-top:14px;max-width:640px;font-size:16px;}

/* ============ 页头带 ============ */
.page-hero{
  position:relative;color:#fff;
  padding:120px 0 72px;min-height:300px;
  display:flex;align-items:flex-end;
  background-image:
    linear-gradient(160deg,rgba(10,26,20,.90),rgba(14,59,46,.86)),
    url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.crumb{font-size:13px;color:rgba(255,255,255,.66);margin-bottom:20px;display:flex;gap:10px;flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.66);background-image:linear-gradient(var(--accent),var(--accent));}
.crumb a:hover{color:#fff;}
.crumb .sep{opacity:.5;}
.page-hero h1{
  font-size:clamp(2.4rem,5.2vw,4.25rem);
  font-weight:800;line-height:1.12;letter-spacing:-.02em;
  max-width:18ch;
}
.title-bar{width:64px;height:6px;border-radius:999px;background:var(--accent);margin:26px 0 22px;}
.hero-lead{font-size:17px;line-height:1.85;color:rgba(255,255,255,.8);max-width:60ch;}

/* ============ 定义式清单 ============ */
.deflist{border-top:1px solid var(--line);}
.defitem{
  display:grid;grid-template-columns:96px 1fr;gap:28px;
  padding:28px 0;border-bottom:1px solid var(--line);
  transition:background .2s var(--ease);
}
.defitem:hover{background:rgba(255,255,255,.6);}
.defitem .num{
  font-size:clamp(1.5rem,2.6vw,2rem);font-weight:800;color:var(--ink);
  background:var(--accent);border-radius:var(--r-md);
  width:72px;height:56px;display:flex;align-items:center;justify-content:center;
  line-height:1;
}
.defbody h3{font-size:1.22rem;font-weight:600;margin-bottom:10px;}
.defbody p{color:var(--muted);font-size:16px;line-height:1.85;max-width:74ch;}
.defbody .tagline{
  display:inline-block;margin-top:12px;font-size:12px;letter-spacing:.02em;
  padding:3px 12px;border-radius:999px;border:1px solid var(--line);color:var(--muted);
}

/* ============ 图文区 ============ */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.figure-card{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);
  background:var(--card);box-shadow:var(--shadow-1);
}
.figure-card img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.checklist li{
  display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);
  font-size:16px;color:var(--text);
}
.checklist li:last-child{border-bottom:none;}
.checklist .dot{
  width:10px;height:10px;border-radius:3px;background:var(--accent);
  margin-top:12px;flex:0 0 10px;
}
.checklist strong{display:block;font-weight:600;margin-bottom:2px;}
.checklist span{color:var(--muted);font-size:15px;}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:4fr 8fr;gap:48px;}
.faq-side h2{font-size:clamp(1.6rem,2.6vw,2.1rem);line-height:1.25;}
.faq-side p{color:var(--muted);margin-top:14px;font-size:15.5px;}
.faq-side .link-plain{display:inline-block;margin-top:18px;font-size:15px;background-image:linear-gradient(var(--accent),var(--accent));}
.accordion-item{
  background:transparent;border:none;border-bottom:1px solid var(--line);
}
.accordion-item:first-child{border-top:1px solid var(--line);}
.accordion-button{
  background:transparent;box-shadow:none;border:none;
  font-size:17px;font-weight:600;color:var(--text);
  padding:22px 44px 22px 16px;position:relative;
  transition:color .2s var(--ease);
}
.accordion-button:not(.collapsed){color:var(--primary);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  content:"+";background-image:none;font-size:22px;font-weight:400;
  width:auto;height:auto;line-height:1;color:var(--muted);
  position:absolute;right:12px;top:50%;transform:translateY(-50%);
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.accordion-button:not(.collapsed)::after{transform:translateY(-50%) rotate(45deg);color:var(--primary);}
.accordion-button::before{
  content:"";position:absolute;left:0;top:18px;bottom:18px;width:3px;
  background:var(--accent);border-radius:2px;opacity:0;transition:opacity .2s var(--ease);
}
.accordion-button:not(.collapsed)::before{opacity:1;}
.accordion-button{padding-left:20px;}
.accordion-body{padding:0 20px 24px 20px;color:var(--muted);font-size:16px;max-width:74ch;}

/* ============ 相关内链卡 ============ */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.rel-card{
  display:block;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:24px;box-shadow:var(--shadow-1);
  background-image:none;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.rel-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:rgba(201,242,76,.35);
}
.rel-card .badge-p{
  display:inline-block;font-size:12px;letter-spacing:.02em;
  padding:3px 12px;border-radius:999px;background:var(--accent);color:var(--ink);font-weight:600;
}
.rel-card h3{font-size:1.12rem;font-weight:600;margin:16px 0 10px;color:var(--ink);}
.rel-card p{font-size:14.5px;color:var(--muted);line-height:1.75;}
.rel-card .go{margin-top:16px;font-size:14px;color:var(--primary);font-weight:600;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 26px;border-radius:12px;
  font-size:15px;font-weight:700;cursor:pointer;
  border:1px solid transparent;background-image:none;text-decoration:none;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn-main{background:var(--accent);color:var(--ink);border-radius:999px;}
.btn-main:hover{background:#d3f765;color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.btn-outline{background:transparent;border:1px solid var(--ink);color:var(--ink);border-radius:999px;}
.btn-outline:hover{background:var(--ink);color:var(--paper);}
.btn-ghost-light{background:transparent;border:1px solid rgba(255,255,255,.5);color:#fff;border-radius:999px;}
.btn-ghost-light:hover{background:#fff;color:var(--ink);border-color:#fff;}
.btn:disabled,.btn.disabled{opacity:.45;cursor:not-allowed;}

/* ============ 结尾 CTA ============ */
.end-cta{
  background:linear-gradient(160deg,var(--ink) 0%,var(--primary) 100%);
  color:#fff;padding:96px 0;text-align:center;
}
.end-cta h2{font-size:clamp(1.75rem,3.2vw,2.6rem);line-height:1.25;max-width:22ch;margin:0 auto;}
.end-cta .btn{margin-top:30px;}
.end-cta .note{margin-top:16px;font-size:13px;color:rgba(255,255,255,.62);}

/* ============ 页脚 ============ */
.site-footer{
  background:var(--ink);color:#fff;padding:72px 0 0;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:52px;}
.footer-desc{color:rgba(255,255,255,.62);font-size:14.5px;line-height:1.8;margin-top:18px;max-width:34ch;}
.footer-col h4{font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.5);font-weight:600;margin-bottom:18px;}
.footer-link{
  display:block;color:rgba(255,255,255,.78);font-size:15px;padding:6px 0;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-size:0 1px;background-position:0 100%;background-repeat:no-repeat;
  transition:color .18s var(--ease),background-size .18s var(--ease);width:fit-content;
}
.footer-link:hover{color:var(--accent);background-size:100% 1px;}
.footer-bottom{
  border-top:1px solid var(--line-dark);padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:var(--muted);
}

/* ============ 浮动 ============ */
.float-cta{
  position:fixed;right:28px;bottom:28px;z-index:1050;
  opacity:0;transform:translateY(12px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.float-cta.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.to-top{
  position:fixed;right:36px;bottom:104px;z-index:1050;
  width:40px;height:40px;border-radius:50%;
  background:var(--card);border:1px solid var(--line);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:16px;
  cursor:pointer;opacity:0;pointer-events:none;
  box-shadow:var(--shadow-1);
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto;}
.to-top:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .38s var(--ease),transform .38s var(--ease);}
.reveal.in{opacity:1;transform:translateY(0);}

/* ============ 响应式 ============ */
@media (min-width:1200px){
  body{padding-left:var(--side-w);}
  .sidebar{transform:translateX(0);}
  .topbar{display:none;}
  .drawer-mask{display:none;}
  .page-hero{padding-top:120px;}
}
@media (min-width:992px) and (max-width:1199.98px){
  body{padding-left:76px;}
  .sidebar{width:76px;transform:translateX(0);}
  .sidebar .brand-sub,.sidebar .side-link .txt,.side-note{display:none;}
  .side-logo{padding:0;justify-content:center;}
  .side-link{justify-content:center;padding:0;}
  .side-cta{font-size:12px;padding:0 6px;height:40px;}
  .side-foot{padding:14px 10px;}
  .topbar{display:none;}
  .drawer-mask{display:none;}
  .page-hero{padding-top:72px;}
}
@media (max-width:991.98px){
  body{padding-top:64px;}
  .page-hero{padding:72px 0 56px;min-height:auto;}
  .faq-wrap{grid-template-columns:1fr;gap:28px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .rel-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container-x{padding:0 20px;}
  .sec{padding:64px 0;}
  .page-hero{padding:64px 0 48px;}
  .page-hero h1{font-size:2.4rem;}
  .defitem{grid-template-columns:1fr;gap:14px;}
  .defitem .num{width:60px;height:48px;font-size:1.5rem;}
  .rel-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .end-cta{padding:64px 0;}
  .float-cta{
    right:0;left:0;bottom:0;padding:8px 16px 10px;
    background:rgba(10,26,20,.96);
    display:flex;align-items:center;gap:12px;
  }
  .float-cta .btn{flex:0 0 60%;height:44px;font-size:14px;}
  .float-cta .alt-link{color:rgba(255,255,255,.78);font-size:13px;background-image:none;}
  .to-top{right:20px;bottom:76px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition-duration:.001ms !important;animation-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}