/* roulang page: index */
:root{
  --c-ink:#0E1714;
  --c-ink-soft:#16302A;
  --c-brand:#0E9F6E;
  --c-brand-deep:#07714E;
  --c-brand-soft:#E6F6EF;
  --c-accent:#FF6A2B;
  --c-accent-soft:#FFF0E8;
  --c-cyan:#1FC8B8;
  --c-bg:#F6F8F6;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E5;
  --t1:#16211D;
  --t2:#56655F;
  --t3:#8B9A94;
  --on-ink-1:#EAF2EE;
  --on-ink-2:#A9BDB5;
  --shadow-1:0 1px 2px rgba(14,23,20,.06),0 8px 24px -12px rgba(14,23,20,.18);
  --shadow-2:0 12px 32px -14px rgba(14,23,20,.24);
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --container:1200px;
  --read:820px;
  --ease:160ms ease;
}
*,*::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,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--t1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--c-brand-deep);}
button{font-family:inherit;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 布局容器 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}
.section{padding:92px 0;}
.section--tight{padding:64px 0;}
.section--surface{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:760px;margin-bottom:36px;}
.section-head--split{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;flex-wrap:wrap;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.08em;color:var(--c-brand-deep);
  background:var(--c-brand-soft);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:16px;font-weight:600;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--c-brand);}
h1{font-size:42px;line-height:1.25;font-weight:700;letter-spacing:.01em;}
h2{font-size:31px;line-height:1.3;font-weight:700;letter-spacing:.01em;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.45;font-weight:600;}
.lead{font-size:17px;line-height:1.9;color:var(--t2);margin-top:16px;}
.muted{color:var(--t3);font-size:14px;line-height:1.75;}
p+p{margin-top:18px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 24px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;border:1px solid transparent;
  transition:transform var(--ease),background-color var(--ease),border-color var(--ease),color var(--ease),box-shadow var(--ease);
  white-space:nowrap;
}
.btn--primary{background:var(--c-brand);color:#fff;}
.btn--primary:hover{background:var(--c-brand-deep);color:#fff;transform:translateY(-1px);}
.btn--primary:active{transform:translateY(0);}
.btn--accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 24px -14px rgba(255,106,43,.9);}
.btn--accent:hover{background:#E85A1D;color:#fff;transform:translateY(-1px);}
.btn--accent:active{transform:translateY(0);}
.btn--ghost{background:var(--c-surface);border-color:var(--c-line);color:var(--t1);}
.btn--ghost:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft);}
.btn--dark-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:var(--on-ink-1);}
.btn--dark-ghost:hover{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.4);}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:8px;}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;}
.link-more{display:inline-flex;align-items:center;gap:6px;color:var(--c-brand-deep);font-weight:600;font-size:15px;}
.link-more:hover{color:var(--c-brand);text-decoration:underline;text-underline-offset:3px;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:200;background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;transition:border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 20px -16px rgba(14,23,20,.5);}
.nav-bar{display:flex;align-items:center;gap:24px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.logo__mark{
  width:38px;height:38px;border-radius:11px;flex:0 0 auto;
  background:linear-gradient(150deg,var(--c-brand) 0%,var(--c-ink-soft) 100%);
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:17px;
  box-shadow:0 8px 18px -12px rgba(14,159,110,.9);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__main{font-size:17px;font-weight:700;color:var(--t1);letter-spacing:.02em;}
.logo__sub{font-size:11px;color:var(--t3);letter-spacing:.16em;}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px;flex:1 1 auto;}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--t2);
}
.nav-main a:hover{color:var(--c-brand-deep);}
.nav-main a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;
  background:var(--c-brand);transform:scaleX(0);transform-origin:center;transition:transform var(--ease);
}
.nav-main a:hover::after,.nav-main a.active::after{transform:scaleX(1);}
.nav-main a.active{color:var(--t1);font-weight:600;}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}

/* Mega 面板 */
.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 14px;
  border-radius:var(--r-btn);border:1px solid var(--c-line);background:var(--c-surface);
  font-size:14px;font-weight:600;color:var(--t2);
}
.mega-trigger:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft);}
.mega-trigger .caret{width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform var(--ease);}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:820px;max-width:calc(100vw - 48px);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-2);padding:24px;
  display:grid;grid-template-columns:1.05fr 1fr .95fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.is-open .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-col h4{font-size:13px;letter-spacing:.1em;color:var(--t3);font-weight:600;margin-bottom:14px;text-transform:none;}
.mega-list li+li{margin-top:8px;}
.mega-list a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;font-size:14px;color:var(--t2);}
.mega-list a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);}
.mega-dot{width:26px;height:26px;border-radius:8px;background:var(--c-brand-soft);color:var(--c-brand-deep);display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:0 0 auto;}
.mega-post{display:flex;gap:10px;padding:9px 8px;border-radius:9px;}
.mega-post:hover{background:var(--c-brand-soft);}
.mega-post img{width:52px;height:38px;object-fit:cover;border-radius:8px;background:var(--c-ink-soft);}
.mega-post span{font-size:12px;color:var(--t3);display:block;}
.mega-post strong{font-size:14px;font-weight:600;color:var(--t1);line-height:1.5;display:block;}
.mega-entry{border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:var(--c-bg);}
.mega-entry img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-ink-soft);}
.mega-entry__body{padding:14px 16px 18px;}
.mega-entry__body strong{display:block;font-size:15px;margin-bottom:10px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;position:relative;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--t1);border-radius:2px;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,23,20,.55);opacity:0;visibility:hidden;
  transition:opacity var(--ease),visibility var(--ease);z-index:290;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(360px,88vw);background:var(--c-surface);z-index:300;
  transform:translateX(102%);transition:transform 200ms ease;padding:20px;overflow-y:auto;
  display:flex;flex-direction:column;gap:6px;box-shadow:-18px 0 40px -24px rgba(14,23,20,.6);
}
.drawer.is-open{transform:translateX(0);}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer__close{width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);background:var(--c-surface);font-size:18px;color:var(--t2);line-height:1;}
.drawer a.drawer__link{padding:14px 12px;border-radius:10px;font-size:16px;font-weight:600;color:var(--t1);border-bottom:1px solid var(--c-line);}
.drawer a.drawer__link:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);}
.drawer__body-lock{overflow:hidden;}

/* ============ Hero ============ */
.hero{
  position:relative;color:var(--on-ink-1);background:var(--c-ink);overflow:hidden;
  padding:84px 0 0;
}
.hero__bg{
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(14,23,20,.78),rgba(14,23,20,.74)),url('/assets/images/backpic/back-1.png');
  background-size:cover;background-position:center;
}
.hero__glow{
  position:absolute;width:520px;height:520px;right:-140px;top:-160px;border-radius:50%;
  background:radial-gradient(circle,rgba(31,200,184,.22),transparent 68%);pointer-events:none;
}
.hero__inner{position:relative;display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:56px;align-items:center;padding-bottom:72px;}
.hero__badge{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.06em;
  color:#B9F2DE;background:rgba(14,159,110,.18);border:1px solid rgba(14,159,110,.4);
  padding:6px 14px;border-radius:var(--r-pill);margin-bottom:22px;
}
.hero h1{color:#fff;font-size:43px;line-height:1.25;}
.hero__sub{margin-top:20px;font-size:17px;line-height:1.9;color:var(--on-ink-2);max-width:560px;}
.hero__cta{display:flex;gap:14px;margin-top:32px;flex-wrap:wrap;}
.hero__stats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:40px;
  border-top:1px solid rgba(255,255,255,.12);padding-top:24px;
}
.hero__stats div strong{display:block;font-size:22px;color:#fff;font-weight:700;letter-spacing:.02em;}
.hero__stats div span{font-size:13px;color:var(--on-ink-2);}
.hero__panel{
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  border-radius:18px;padding:22px;backdrop-filter:blur(6px);
}
.hero__panel h3{color:#fff;font-size:17px;margin-bottom:16px;}
.hero__panel ul li{
  display:flex;align-items:flex-start;gap:12px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.14);
}
.hero__panel ul li:last-child{border-bottom:0;padding-bottom:0;}
.hero__panel .idx{
  width:24px;height:24px;border-radius:7px;background:rgba(31,200,184,.18);color:#8FE7DD;
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;flex:0 0 auto;margin-top:3px;
}
.hero__panel p{font-size:14px;line-height:1.75;color:var(--on-ink-2);}
.hero__panel strong{display:block;font-size:15px;color:#fff;font-weight:600;}
.hero__strip{
  position:relative;background:rgba(255,255,255,.05);border-top:1px solid rgba(255,255,255,.12);
}
.hero__strip .container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding-top:22px;padding-bottom:22px;}
.hero__strip div{font-size:14px;color:var(--on-ink-2);}
.hero__strip strong{display:block;color:#fff;font-size:15px;font-weight:600;margin-bottom:2px;}

/* ============ 通用卡片 ============ */
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CFE0D8;}
.card__icon{
  width:46px;height:46px;border-radius:12px;background:var(--c-brand-soft);color:var(--c-brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;margin-bottom:18px;
}
.card h3{margin-bottom:10px;}
.card p{color:var(--t2);font-size:15px;line-height:1.85;}
.pill{
  display:inline-flex;align-items:center;gap:6px;border-radius:var(--r-pill);
  padding:4px 12px;font-size:13px;font-weight:600;
  background:var(--c-brand-soft);color:var(--c-brand-deep);
}
.pill--accent{background:var(--c-accent-soft);color:#C64B14;}
.pill--muted{background:var(--c-bg);color:var(--t2);border:1px solid var(--c-line);}
.pill-row{display:flex;gap:10px;flex-wrap:wrap;}

/* 三通道 */
.channel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}

/* ============ 权益对比表 ============ */
.table-shell{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:12px;
  box-shadow:var(--shadow-1);overflow:hidden;
}
.table-scroll{overflow-x:auto;}
.benefit-table{min-width:880px;font-size:15px;}
.benefit-table thead th{
  position:sticky;top:0;z-index:2;background:var(--c-bg);
  padding:18px 16px;text-align:center;font-size:15px;font-weight:700;color:var(--t1);
  border-bottom:1px solid var(--c-line);vertical-align:middle;
}
.benefit-table thead th:first-child{text-align:left;width:26%;padding-left:24px;}
.benefit-table thead th .price{display:block;font-size:13px;font-weight:500;color:var(--t3);margin-top:4px;}
.benefit-table thead th.is-recommended{
  background:var(--c-brand-soft);border-top:2px solid var(--c-brand);border-left:2px solid var(--c-brand);border-right:2px solid var(--c-brand);
  color:var(--c-brand-deep);position:relative;
}
.benefit-table thead th.is-recommended .badge-rec{
  position:absolute;top:-1px;left:50%;transform:translate(-50%,-60%);
  background:var(--c-accent);color:#fff;font-size:12px;padding:3px 12px;border-radius:var(--r-pill);white-space:nowrap;
}
.benefit-table tbody th{
  text-align:left;font-weight:500;color:var(--t2);padding:16px 16px 16px 24px;
  border-bottom:1px solid var(--c-line);font-size:15px;
}
.benefit-table tbody td{
  text-align:center;padding:16px;border-bottom:1px solid var(--c-line);color:var(--t1);
  font-variant-numeric:tabular-nums;
}
.benefit-table tbody tr:hover{background:#F8FCFA;}
.benefit-table tbody tr:hover th{color:var(--t1);}
.benefit-table tbody td.is-recommended{background:rgba(230,246,239,.6);border-left:2px solid rgba(14,159,110,.35);border-right:2px solid rgba(14,159,110,.35);}
.benefit-table tbody tr:last-child th,.benefit-table tbody tr:last-child td{border-bottom:0;}
.mark-yes{color:var(--c-brand);font-weight:700;font-size:17px;}
.mark-no{color:#C7D3CE;font-weight:700;font-size:17px;}
.table-note{margin-top:16px;font-size:14px;color:var(--t3);}

/* ============ 等级阶梯 ============ */
.ladder{display:flex;flex-direction:column;gap:18px;}
.ladder-item{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:24px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 28px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.ladder-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.ladder-item__num{
  width:64px;height:64px;border-radius:16px;display:flex;align-items:center;justify-content:center;
  font-size:22px;font-weight:700;color:#fff;letter-spacing:.02em;
}
.l1 .ladder-item__num{background:#3FB98A;}
.l2 .ladder-item__num{background:var(--c-cyan);}
.l3 .ladder-item__num{background:var(--c-accent);}
.l4 .ladder-item__num{background:var(--c-ink-soft);}
.ladder-item h3{margin-bottom:10px;display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.ladder-item__points{display:flex;flex-wrap:wrap;gap:8px 22px;font-size:14px;color:var(--t2);}
.ladder-item__points span{display:inline-flex;align-items:center;gap:7px;}
.ladder-item__points span::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--c-brand);flex:0 0 auto;}
.ladder-item--accent{border-color:rgba(255,106,43,.4);}

/* ============ 专属内容预览 2+1 ============ */
.preview-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:24px;}
.preview-main{
  position:relative;border-radius:var(--r-card);overflow:hidden;background:var(--c-ink-soft);
  color:#fff;min-height:380px;display:flex;align-items:flex-end;
  border:1px solid var(--c-line);
}
.preview-main img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform 200ms ease;}
.preview-main:hover img{transform:scale(1.03);}
.preview-main::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,23,20,.05) 20%,rgba(14,23,20,.86) 100%);
}
.preview-main__body{position:relative;z-index:2;padding:28px;}
.preview-main__body h3{color:#fff;margin:12px 0 10px;font-size:22px;}
.preview-main__body p{color:#CFE0D8;font-size:15px;line-height:1.8;}
.preview-side{display:grid;grid-template-rows:1fr 1fr;gap:24px;}
.preview-card{
  position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--c-line);
  background:var(--c-surface);box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.preview-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.preview-card img{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--c-ink-soft);transition:transform 200ms ease;}
.preview-card:hover img{transform:scale(1.03);}
.preview-card__body{padding:18px 20px 20px;}
.preview-card__body h4{margin-bottom:8px;}
.preview-card__body p{font-size:14px;color:var(--t2);line-height:1.75;}
.corner-badge{
  position:absolute;top:12px;right:12px;z-index:3;background:var(--c-accent);color:#fff;
  font-size:12px;font-weight:600;padding:4px 11px;border-radius:var(--r-pill);
}

/* ============ 最新信息 CMS ============ */
.news-layout{display:grid;grid-template-columns:300px minmax(0,1fr);gap:40px;align-items:start;}
.news-aside{position:sticky;top:92px;}
.news-aside h2{margin-bottom:12px;}
.news-aside p{color:var(--t2);font-size:15px;line-height:1.85;margin-bottom:22px;}
.filter-list{display:flex;flex-wrap:wrap;gap:10px;}
.filter-list a{
  display:inline-flex;align-items:center;height:36px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-surface);border:1px solid var(--c-line);font-size:14px;color:var(--t2);font-weight:500;
}
.filter-list a:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft);}
.filter-list a.is-active{background:var(--c-brand);border-color:var(--c-brand);color:#fff;}
.post-list{display:flex;flex-direction:column;gap:0;border-top:1px solid var(--c-line);}
.post-item{
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;
  padding:22px 20px;border-bottom:1px solid var(--c-line);border-radius:10px;
  transition:background-color var(--ease);
}
.post-item:hover{background:var(--c-brand-soft);}
.post-item__meta{display:flex;align-items:center;gap:12px;margin-bottom:8px;}
.post-item h3{font-size:18px;line-height:1.5;margin-bottom:8px;}
.post-item p{font-size:15px;color:var(--t2);line-height:1.8;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-item__side{text-align:right;font-size:13px;color:var(--t3);white-space:nowrap;font-variant-numeric:tabular-nums;}
.post-item--lead{
  grid-template-columns:220px minmax(0,1fr) auto;align-items:stretch;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-1);padding:18px;
  margin-bottom:18px;border-bottom:1px solid var(--c-line);
}
.post-item--lead:hover{background:var(--c-surface);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.post-item--lead img{width:100%;height:100%;min-height:150px;object-fit:cover;border-radius:10px;background:var(--c-ink-soft);}
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-card);background:var(--c-surface);
  padding:48px 24px;text-align:center;color:var(--t2);
}
.empty-state .empty-icon{
  width:52px;height:52px;border-radius:14px;background:var(--c-brand-soft);color:var(--c-brand-deep);
  display:flex;align-items:center;justify-content:center;margin:0 auto 16px;font-size:22px;font-weight:700;
}
.empty-state p{font-size:15px;margin-bottom:16px;}

/* ============ FAQ ============ */
.faq-wrap{max-width:var(--read);margin:0 auto;}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:14px;overflow:hidden;transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item.is-open{border-color:#CFE0D8;box-shadow:var(--shadow-1);}
.faq-q{
  width:100%;background:none;border:0;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 22px;font-size:17px;font-weight:600;color:var(--t1);line-height:1.6;
  border-left:3px solid transparent;transition:background-color var(--ease),border-color var(--ease);
}
.faq-q:hover{background:#FAFDFB;}
.faq-item.is-open .faq-q{background:var(--c-bg);border-left-color:var(--c-brand);}
.faq-q .arrow{
  width:10px;height:10px;border-right:2px solid var(--c-brand);border-bottom:2px solid var(--c-brand);
  transform:rotate(45deg);transition:transform var(--ease);flex:0 0 auto;margin-right:6px;
}
.faq-item.is-open .faq-q .arrow{transform:rotate(-135deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height 220ms ease;
  border-left:3px solid var(--c-brand);
}
.faq-item.is-open .faq-a{max-height:520px;}
.faq-a__inner{padding:6px 26px 24px 22px;font-size:16px;line-height:1.85;color:var(--t2);}

/* ============ CTA ============ */
.cta-band{
  position:relative;overflow:hidden;border-radius:20px;color:#fff;
  background:var(--c-ink);
  padding:56px 48px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:40px;align-items:center;
}
.cta-band__bg{
  position:absolute;inset:0;opacity:.34;
  background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center;
}
.cta-band__tint{
  position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(14,159,110,.85) 0%,rgba(31,200,184,.35) 52%,rgba(14,23,20,.2) 100%);
}
.cta-band__body{position:relative;z-index:2;}
.cta-band h2{color:#fff;margin-bottom:14px;}
.cta-band p{color:#DCEAE4;font-size:16px;max-width:620px;}
.cta-band__actions{position:relative;z-index:2;display:flex;gap:14px;flex-wrap:wrap;}
.cta-band__note{position:relative;z-index:2;margin-top:18px;font-size:13px;color:#B9CFC7;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:var(--on-ink-2);padding-top:72px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:48px;}
.footer-brand .logo__main{color:#fff;}
.footer-brand .logo__sub{color:var(--on-ink-2);}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;color:var(--on-ink-2);max-width:340px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px;font-weight:600;}
.footer-col li+li{margin-top:11px;}
.footer-col a{font-size:14px;color:var(--on-ink-2);}
.footer-col a:hover{color:#fff;}
.footer-col .contact-line{font-size:14px;line-height:1.9;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0 30px;
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:#7E948C;
}
.back-top{
  position:fixed;right:26px;bottom:26px;width:44px;height:44px;border-radius:50%;
  background:var(--c-brand);color:#fff;border:0;display:flex;align-items:center;justify-content:center;
  font-size:18px;box-shadow:0 12px 28px -14px rgba(14,159,110,1);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:opacity var(--ease),transform var(--ease),visibility var(--ease);
  z-index:150;
}
.back-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{background:var(--c-brand-deep);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .nav-main a{padding:0 11px;font-size:14px;}
  .hero h1{font-size:38px;}
}
@media (max-width:1023px){
  .nav-main{display:none;}
  .nav-actions .btn--login{display:none;}
  .nav-toggle{display:flex;}
  .mega-wrap{display:none;}
  .hero__inner{grid-template-columns:1fr;gap:36px;padding-bottom:56px;}
  .hero h1{font-size:34px;}
  .hero__stats{grid-template-columns:repeat(3,1fr);}
  .hero__strip .container{grid-template-columns:repeat(2,1fr);gap:18px 24px;}
  .channel-grid{grid-template-columns:1fr 1fr;}
  .preview-grid{grid-template-columns:1fr;}
  .news-layout{grid-template-columns:1fr;gap:28px;}
  .news-aside{position:static;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .section{padding:64px 0;}
  h2{font-size:26px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85;}
  .container{padding:0 16px;}
  h1,.hero h1{font-size:28px;line-height:1.3;}
  h2{font-size:22px;}
  h3{font-size:18px;}
  h4{font-size:17px;}
  .section{padding:48px 0;}
  .section--tight{padding:42px 0;}
  .hero{padding-top:56px;}
  .hero__cta .btn{flex:1 1 auto;}
  .hero__stats{grid-template-columns:1fr 1fr;gap:16px;}
  .hero__panel{padding:18px;}
  .channel-grid{grid-template-columns:1fr;}
  .ladder-item{grid-template-columns:1fr;gap:16px;padding:22px 20px;}
  .ladder-item__num{width:52px;height:52px;font-size:19px;border-radius:14px;}
  .post-item{grid-template-columns:1fr;gap:10px;padding:18px 12px;}
  .post-item__side{text-align:left;display:flex;gap:14px;}
  .post-item--lead{grid-template-columns:1fr;padding:14px;}
  .post-item--lead img{min-height:170px;}
  .cta-band{grid-template-columns:1fr;padding:38px 24px;gap:26px;border-radius:16px;}
  .preview-main{min-height:300px;}
  .preview-side{grid-template-rows:auto auto;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .table-scroll{overflow:visible;}
  .benefit-table{min-width:0;display:block;}
  .benefit-table thead{display:none;}
  .benefit-table tbody,.benefit-table tr,.benefit-table th,.benefit-table td{display:block;width:100%;}
  .benefit-table tbody tr{
    border:1px solid var(--c-line);border-radius:12px;background:var(--c-surface);
    padding:10px 6px;margin-bottom:14px;
  }
  .benefit-table tbody th{
    padding:8px 14px 12px;border-bottom:1px solid var(--c-line);font-weight:600;color:var(--t1);font-size:15px;
  }
  .benefit-table tbody td{
    text-align:left;padding:9px 14px;border-bottom:0;display:flex;justify-content:space-between;align-items:center;gap:12px;
    font-size:14px;
  }
  .benefit-table tbody td::before{content:attr(data-label);color:var(--t3);font-size:13px;}
  .benefit-table tbody td.is-recommended{background:transparent;border-left:0;border-right:0;}
  .table-scroll{border-radius:12px;}
  .faq-q{font-size:16px;padding:17px 16px;}
  .faq-a__inner{padding:4px 18px 20px 16px;font-size:15px;}
  .back-top{right:16px;bottom:16px;}
}
@media (max-width:479px){
  .hero__cta{flex-direction:column;align-items:stretch;}
  .hero__cta .btn{width:100%;}
  .hero__stats{grid-template-columns:1fr;}
  .hero__strip .container{grid-template-columns:1fr;}
  .cta-band__actions .btn{width:100%;}
  .cta-band__actions{flex-direction:column;align-items:stretch;}
}

/* roulang page: article */
:root{
  --c-ink:#0E1714;
  --c-ink-soft:#16302A;
  --c-brand:#0E9F6E;
  --c-brand-deep:#07714E;
  --c-brand-soft:#E6F6EF;
  --c-accent:#FF6A2B;
  --c-accent-soft:#FFF0E8;
  --c-cyan:#1FC8B8;
  --c-bg:#F6F8F6;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E5;
  --t1:#16211D;
  --t2:#56655F;
  --t3:#8B9A94;
  --d1:#EAF2EE;
  --d2:#A9BDB5;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,23,20,.06),0 8px 24px -12px rgba(14,23,20,.18);
  --shadow-2:0 12px 32px -14px rgba(14,23,20,.24);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:17px;
  line-height:1.9;
  letter-spacing:.012em;
  color:var(--t1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
body.nav-open{overflow:hidden}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
a:hover{color:var(--c-brand-deep)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:700;letter-spacing:.01em}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul,ol{margin:0 0 18px;padding-left:22px}
li{margin-bottom:8px}
figure{margin:0}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;background:var(--c-surface);color:var(--t1);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn--primary{background:var(--c-brand);color:#fff}
.btn--primary:hover{background:var(--c-brand-deep);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn--primary:active{transform:translateY(0)}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover{background:#E85A1D;color:#fff;transform:translateY(-1px);box-shadow:var(--shadow-1)}
.btn--accent:active{transform:translateY(0)}
.btn--ghost{background:var(--c-surface);border-color:var(--c-line);color:var(--t1)}
.btn--ghost:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft)}
.btn--ghost-light{background:transparent;border-color:rgba(255,255,255,.26);color:#EAF2EE}
.btn--ghost-light:hover{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.40)}
.btn--sm{height:38px;padding:0 16px;font-size:14.5px;border-radius:8px}
.btn--lg{height:52px;padding:0 28px;font-size:17px}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;background:var(--c-surface);
  border-bottom:1px solid transparent;transition:box-shadow .2s ease,border-color .2s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 20px -14px rgba(14,23,20,.35)}
.nav-bar{display:flex;align-items:center;gap:20px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(140deg,var(--c-brand) 0%,var(--c-brand-deep) 72%,var(--c-cyan) 130%);
  color:#fff;font-size:18px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__main{font-size:17px;font-weight:700;color:var(--t1);letter-spacing:.02em}
.logo__sub{font-size:11.5px;color:var(--t3);letter-spacing:.14em}
.nav-main{display:flex;align-items:center;gap:4px;flex:1;justify-content:center}
.nav-main a{
  position:relative;display:inline-block;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--t2);font-weight:500;transition:color .18s ease,background-color .18s ease;
}
.nav-main a:hover{color:var(--c-brand-deep);background:var(--c-brand-soft)}
.nav-main a.active{color:var(--t1);font-weight:600}
.nav-main a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;border-radius:2px;background:var(--c-brand);
}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--t1);transform:translateX(-50%);
}
.nav-toggle span{top:50%;margin-top:-1px}
.nav-toggle span::before,.nav-toggle span::after{content:"";left:0;transform:none}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.nav-toggle:hover{border-color:var(--c-brand);background:var(--c-brand-soft)}

/* ---------- Mega 面板 ---------- */
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;height:38px;padding:0 16px;
  border:1px solid var(--c-line);border-radius:8px;background:var(--c-surface);
  font-size:14.5px;font-weight:600;color:var(--t1);cursor:pointer;
  transition:border-color .18s ease,background-color .18s ease,color .18s ease;
}
.mega-trigger:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft)}
.caret{width:0;height:0;border-left:4.5px solid transparent;border-right:4.5px solid transparent;border-top:5px solid currentColor;transition:transform .18s ease}
.mega-wrap.is-open .caret{transform:rotate(180deg)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:760px;
  display:grid;grid-template-columns:1.05fr 1.2fr 1fr;gap:22px;
  padding:24px;border:1px solid var(--c-line);border-radius:16px;background:var(--c-surface);
  box-shadow:var(--shadow-2);
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
}
.mega-wrap:hover .mega-panel,.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;letter-spacing:.12em;color:var(--t3);font-weight:600;margin-bottom:12px}
.mega-list{list-style:none;margin:0;padding:0}
.mega-list li{margin:0 0 4px}
.mega-list a{
  display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;
  font-size:14.5px;color:var(--t2);transition:background-color .18s ease,color .18s ease;
}
.mega-list a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.mega-dot{
  width:24px;height:24px;border-radius:7px;background:var(--c-brand-soft);color:var(--c-brand-deep);
  font-size:12.5px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.mega-post{display:flex;gap:10px;padding:8px;border-radius:10px;transition:background-color .18s ease}
.mega-post:hover{background:var(--c-bg)}
.mega-post img{width:56px;height:42px;object-fit:cover;border-radius:8px;flex-shrink:0;background:var(--c-brand-soft)}
.mega-post span{display:block;font-size:12.5px;color:var(--t3);line-height:1.6}
.mega-post strong{display:block;font-size:14px;font-weight:600;color:var(--t1);margin-bottom:2px}
.mega-card{display:block;border:1px solid var(--c-line);border-radius:12px;overflow:hidden;background:var(--c-surface);transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease}
.mega-card:hover{border-color:var(--c-brand);box-shadow:var(--shadow-1);transform:translateY(-2px)}
.mega-card img{width:100%;height:104px;object-fit:cover}
.mega-card__title{display:block;padding:10px 12px 4px;font-size:14px;font-weight:600;color:var(--t1)}
.mega-card .btn{margin:4px 12px 12px}

/* ---------- 文章页头 ---------- */
.page-hero{
  position:relative;background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;color:#EAF2EE;overflow:hidden;
}
.page-hero::before{content:"";position:absolute;inset:0;background:rgba(14,23,20,.76)}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(14,23,20,0) 40%,rgba(14,23,20,.55) 100%)}
.page-hero .container{position:relative;z-index:1;padding-top:36px;padding-bottom:52px}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--d2);margin-bottom:26px}
.crumbs a{color:var(--d2)}
.crumbs a:hover{color:#fff}
.crumbs .sep{color:rgba(255,255,255,.32)}
.crumbs .current{color:#EAF2EE}
.post-head{max-width:860px}
.post-tag{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(31,200,184,.16);color:#9DEFE5;font-size:12.5px;font-weight:600;letter-spacing:.08em;margin-bottom:16px;
}
.post-title{
  font-size:clamp(24px,2.7vw,32px);line-height:1.36;color:#fff;font-weight:700;margin-bottom:18px;
}
.post-meta{display:flex;flex-wrap:wrap;gap:20px;font-size:13.5px;color:var(--d2)}
.meta-item{display:inline-flex;align-items:center;gap:8px}
.meta-label{
  display:inline-block;padding:1px 8px;border-radius:6px;background:rgba(255,255,255,.10);
  font-size:12px;color:#CDDED8;
}
.post-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}

/* ---------- 主布局 ---------- */
.main-wrap{padding:56px 0 88px}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start}
.article-main{min-width:0}
.article-panel{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:36px 40px;box-shadow:var(--shadow-1);
}

/* ---------- 正文排版 ---------- */
.article-body{max-width:820px;font-size:17px;line-height:1.9;color:var(--t1)}
.article-body p{margin:0 0 18px}
.article-body h2{
  font-size:24px;line-height:1.4;margin:40px 0 16px;padding-left:14px;
  border-left:4px solid var(--c-brand);border-radius:2px;
}
.article-body h3{font-size:20px;line-height:1.45;margin:32px 0 14px;color:var(--t1)}
.article-body h4{font-size:18px;line-height:1.45;margin:26px 0 12px;color:var(--t2)}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:24px}
.article-body li{margin-bottom:10px}
.article-body a{color:var(--c-brand);border-bottom:1px solid rgba(14,159,110,.35);transition:color .18s ease,border-color .18s ease}
.article-body a:hover{color:var(--c-brand-deep);border-bottom-color:var(--c-brand-deep)}
.article-body img{border-radius:var(--r-img);margin:24px 0 10px;background:var(--c-brand-soft)}
.article-body figcaption{font-size:13px;color:var(--t3);text-align:center;margin-bottom:24px}
.article-body blockquote{
  margin:24px 0;padding:16px 20px;border-left:3px solid var(--c-brand);
  background:var(--c-brand-soft);border-radius:0 12px 12px 0;color:var(--t2);font-size:16.5px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15.5px;
  border:1px solid var(--c-line);border-radius:var(--r-img);overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body thead th{background:var(--c-brand-soft);color:var(--c-brand-deep);font-weight:600}
.article-body tbody tr:nth-child(even){background:#FAFCFB}
.article-body tbody tr:last-child td{border-bottom:none}
.article-body hr{border:none;border-top:1px solid var(--c-line);margin:32px 0}
.article-body code{background:var(--c-bg);border:1px solid var(--c-line);border-radius:6px;padding:2px 6px;font-size:14.5px}

/* ---------- 空态 ---------- */
.article-empty{
  max-width:820px;text-align:center;padding:48px 24px;border:1px dashed var(--c-line);
  border-radius:var(--r-card);background:var(--c-bg);
}
.article-empty .empty-icon{
  width:52px;height:52px;margin:0 auto 16px;border-radius:50%;
  background:var(--c-accent-soft);color:var(--c-accent);font-size:22px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.article-empty p{font-size:15px;color:var(--t2);margin-bottom:20px}

/* ---------- 文末区块 ---------- */
.post-foot{margin-top:36px;padding-top:28px;border-top:1px solid var(--c-line)}
.post-foot h3{font-size:16px;font-weight:600;color:var(--t2);margin-bottom:14px}
.tag-row{display:flex;flex-wrap:wrap;gap:10px}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-brand-soft);color:var(--c-brand-deep);font-size:13.5px;font-weight:500;
  transition:background-color .18s ease,color .18s ease;
}
.tag:hover{background:var(--c-brand);color:#fff}
.tag--accent{background:var(--c-accent-soft);color:#C24A15}
.tag--accent:hover{background:var(--c-accent);color:#fff}

.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:34px}
.pn-card{
  display:block;padding:18px 20px;border:1px solid var(--c-line);border-radius:var(--r-card);
  background:var(--c-surface);transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;
}
.pn-card:hover{border-color:var(--c-brand);box-shadow:var(--shadow-1);transform:translateY(-2px)}
.pn-card span{display:block;font-size:12.5px;color:var(--t3);letter-spacing:.08em;margin-bottom:6px}
.pn-card strong{display:block;font-size:16px;font-weight:600;color:var(--t1);line-height:1.5}

.reco{margin-top:34px}
.reco h3{font-size:18px;margin-bottom:16px}
.reco-list{list-style:none;margin:0;padding:0;border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;background:var(--c-surface)}
.reco-list li{margin:0;border-bottom:1px solid var(--c-line)}
.reco-list li:last-child{border-bottom:none}
.reco-list a{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;transition:background-color .18s ease;
}
.reco-list a:hover{background:var(--c-brand-soft)}
.reco-list .reco-t{font-size:16px;font-weight:600;color:var(--t1)}
.reco-list .reco-d{display:block;font-size:13.5px;color:var(--t2);font-weight:400;margin-top:4px}
.reco-list .reco-go{flex-shrink:0;font-size:13.5px;color:var(--c-brand);font-weight:600}

/* ---------- 侧栏 ---------- */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px 22px;box-shadow:var(--shadow-1);
}
.side-card h4{font-size:15px;font-weight:700;color:var(--t1);margin-bottom:12px;display:flex;align-items:center;gap:8px}
.side-card h4::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--c-brand)}
.side-card p{font-size:14px;line-height:1.8;color:var(--t2);margin-bottom:0}
.side-list{list-style:none;margin:0;padding:0}
.side-list li{
  display:flex;gap:10px;font-size:14px;line-height:1.75;color:var(--t2);
  padding:9px 0;border-bottom:1px dashed var(--c-line);margin:0;
}
.side-list li:last-child{border-bottom:none;padding-bottom:0}
.side-list .idx{
  flex-shrink:0;width:22px;height:22px;border-radius:7px;background:var(--c-brand-soft);
  color:var(--c-brand-deep);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.side-links{list-style:none;margin:0;padding:0}
.side-links li{margin:0}
.side-links a{display:block;padding:9px 0;font-size:14.2px;color:var(--t2);border-bottom:1px solid var(--c-line);transition:color .18s ease,padding-left .18s ease}
.side-links li:last-child a{border-bottom:none}
.side-links a:hover{color:var(--c-brand-deep);padding-left:6px}
.side-card--cta{background:var(--c-ink);border-color:transparent;color:var(--d1)}
.side-card--cta h4{color:#fff}
.side-card--cta h4::before{background:var(--c-accent)}
.side-card--cta p{color:var(--d2);margin-bottom:16px}
.side-card--cta .btn{width:100%}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#EAF2EE;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(14,23,20,.94) 0%,rgba(7,113,78,.82) 58%,rgba(31,200,184,.42) 100%);
}
.cta-inner{position:relative;z-index:1;display:flex;align-items:center;justify-content:space-between;gap:36px;padding:64px 0}
.cta-copy h2{font-size:clamp(22px,2.4vw,30px);color:#fff;margin-bottom:12px}
.cta-copy p{font-size:15.5px;color:rgba(234,242,238,.82);max-width:620px;margin-bottom:0}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex-shrink:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:var(--d2);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:32px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo__main{color:#fff}
.footer-brand .logo__sub{color:var(--d2)}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--d2);margin-bottom:0;max-width:360px}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.06em}
.footer-col ul{list-style:none;margin:0;padding:0}
.footer-col li{margin-bottom:10px}
.footer-col a,.footer-col .contact-line{font-size:14px;color:var(--t3);transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  font-size:13px;color:var(--t3);
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--c-brand);color:#fff;border:none;cursor:pointer;z-index:90;
  display:flex;align-items:center;justify-content:center;font-size:18px;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease,background-color .2s ease;
}
.to-top.is-on{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-brand-deep)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
  .mega-panel{width:680px}
}
@media (max-width:1024px){
  .nav-main{
    position:fixed;left:0;right:0;top:60px;bottom:0;z-index:130;
    flex-direction:column;align-items:stretch;justify-content:flex-start;gap:2px;
    background:var(--c-surface);padding:18px 20px 32px;border-top:1px solid var(--c-line);
    overflow-y:auto;display:none;
  }
  body.nav-open .nav-main{display:flex}
  .nav-main a{padding:14px 14px;font-size:16px;border-radius:10px;border-bottom:1px solid var(--c-line)}
  .nav-main a.active::after{display:none}
  .nav-main a.active{background:var(--c-brand-soft);color:var(--c-brand-deep)}
  .nav-toggle{display:block}
  .btn--login{display:none}
  .mega-wrap{display:none}
  .nav-bar{height:60px}
  .article-layout{grid-template-columns:1fr;gap:32px}
  .side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 280px}
  .article-panel{padding:28px 26px}
  .main-wrap{padding:40px 0 64px}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:52px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 16px}
  .page-hero .container{padding-top:24px;padding-bottom:38px}
  .article-panel{padding:22px 18px}
  .article-body{font-size:16px;line-height:1.85}
  .article-body h2{font-size:20px;margin:32px 0 14px}
  .article-body h3{font-size:18px}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
  .prevnext{grid-template-columns:1fr}
  .reco-list a{flex-direction:column;align-items:flex-start;gap:8px}
  .cta-actions{width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;margin-top:32px}
  .to-top{right:16px;bottom:18px}
}
@media (max-width:520px){
  .post-actions{flex-direction:column;align-items:stretch}
  .post-actions .btn{width:100%}
  .cta-actions .btn{width:100%}
  .side-card{padding:18px}
}

/* roulang page: category1 */
/* ============ 设计变量 ============ */
:root{
  --c-ink:#0E1714;
  --c-ink-soft:#16302A;
  --c-brand:#0E9F6E;
  --c-brand-deep:#07714E;
  --c-brand-soft:#E6F6EF;
  --c-accent:#FF6A2B;
  --c-accent-soft:#FFF0E8;
  --c-cyan:#1FC8B8;
  --c-bg:#F6F8F6;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E5;
  --t1:#16211D;
  --t2:#56655F;
  --t3:#8B9A94;
  --w1:#EAF2EE;
  --w2:#A9BDB5;
  --shadow-1:0 1px 2px rgba(14,23,20,.06), 0 8px 24px -12px rgba(14,23,20,.18);
  --shadow-2:0 12px 32px -14px rgba(14,23,20,.24);
  --r-card:14px;
  --r-btn:10px;
  --r-pill:999px;
  --container:1200px;
  --gap:24px;
  --trans:180ms ease;
}

/* ============ 基础重置 ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.015em;
  text-align:left;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;padding:0;}
ul,ol{list-style:none;}
img{max-width:100%;display:block;background:var(--c-brand-soft);}
a{color:inherit;text-decoration:none;transition:color var(--trans),border-color var(--trans),background-color var(--trans);}
button{font-family:inherit;font-size:inherit;cursor:pointer;border:0;background:none;color:inherit;}
table{border-collapse:collapse;width:100%;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px;}
.num{font-variant-numeric:tabular-nums;}

/* ============ 容器与板块 ============ */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
.section{padding:88px 0;}
.section--tight{padding:64px 0;}
.section--surface{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-head{max-width:820px;margin-bottom:32px;}
.section-head--row{
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;max-width:none;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;line-height:1.75;color:var(--c-brand-deep);
  background:var(--c-brand-soft);border-radius:var(--r-pill);
  padding:4px 14px;margin-bottom:16px;letter-spacing:.06em;
}
.eyebrow--dark{background:rgba(255,255,255,.10);color:var(--w1);}
h1{font-size:42px;line-height:1.25;font-weight:700;letter-spacing:.01em;}
h2{font-size:31px;line-height:1.3;font-weight:700;}
h3{font-size:22px;line-height:1.4;font-weight:600;}
h4{font-size:18px;line-height:1.45;font-weight:600;}
.section-title{font-size:31px;line-height:1.3;font-weight:700;margin-bottom:14px;}
.section-desc{font-size:16px;line-height:1.85;color:var(--t2);max-width:760px;}

/* ============ 顶栏 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--trans),border-color var(--trans);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 4px 18px -12px rgba(14,23,20,.28);}
.nav-bar{display:flex;align-items:center;gap:28px;height:68px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.logo__mark{
  width:38px;height:38px;border-radius:11px;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--c-brand),var(--c-brand-deep));
  color:#fff;font-size:19px;font-weight:700;
}
.logo__text{display:flex;flex-direction:column;line-height:1.15;}
.logo__main{font-size:17px;font-weight:700;color:var(--t1);letter-spacing:.02em;}
.logo__sub{font-size:11px;color:var(--t3);letter-spacing:.18em;}
.logo:hover .logo__main{color:var(--c-brand-deep);}

.nav-main{display:flex;align-items:center;gap:4px;flex:1;}
.nav-main a{
  position:relative;
  padding:8px 12px;font-size:15px;color:var(--t2);border-radius:8px;
}
.nav-main a:hover{color:var(--c-brand-deep);background:var(--c-brand-soft);}
.nav-main a.active{color:var(--t1);font-weight:600;}
.nav-main a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-2px;height:2px;
  background:var(--c-brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;white-space:nowrap;
  transition:background-color var(--trans),color var(--trans),border-color var(--trans),transform var(--trans),box-shadow var(--trans);
}
.btn--sm{height:38px;padding:0 18px;font-size:14px;}
.btn--primary{background:var(--c-brand);color:#fff;}
.btn--primary:hover{background:var(--c-brand-deep);transform:translateY(-1px);box-shadow:var(--shadow-1);}
.btn--primary:active{transform:translateY(0);}
.btn--outline{background:var(--c-surface);border-color:var(--c-line);color:var(--t2);}
.btn--outline:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft);}
.btn--accent{background:var(--c-accent);color:#fff;}
.btn--accent:hover{background:#E85A1D;transform:translateY(-1px);box-shadow:0 10px 26px -12px rgba(255,106,43,.7);}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.24);color:#fff;}
.btn--ghost:hover{background:rgba(255,255,255,.10);}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

/* Mega 面板 */
.mega-wrap{position:relative;}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:var(--r-btn);
  font-size:14px;font-weight:600;color:var(--t2);
  background:var(--c-bg);border:1px solid var(--c-line);
  transition:all var(--trans);
}
.mega-trigger:hover{color:var(--c-brand-deep);border-color:var(--c-brand);background:var(--c-brand-soft);}
.caret{
  width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:5px solid currentColor;transition:transform var(--trans);
}
.mega-wrap.is-open .caret{transform:rotate(180deg);}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 14px);width:760px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-2);padding:24px;
  display:grid;grid-template-columns:1fr 1.35fr;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity 160ms ease,transform 160ms ease,visibility 160ms;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.is-open .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0);
}
.mega-col h4{font-size:14px;color:var(--t3);font-weight:600;letter-spacing:.08em;margin-bottom:14px;}
.mega-list li+li{margin-top:4px;}
.mega-list a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:15px;color:var(--t2);
}
.mega-list a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);}
.mega-dot{
  width:26px;height:26px;border-radius:8px;display:grid;place-items:center;
  background:var(--c-brand-soft);color:var(--c-brand-deep);font-size:13px;font-weight:700;flex-shrink:0;
}
.mega-post{display:flex;gap:12px;padding:9px 10px;border-radius:10px;}
.mega-post:hover{background:var(--c-bg);}
.mega-post img{width:78px;height:52px;object-fit:cover;border-radius:9px;flex-shrink:0;}
.mega-post span{display:block;font-size:13px;line-height:1.6;color:var(--t3);}
.mega-post strong{display:block;font-size:15px;font-weight:600;color:var(--t1);line-height:1.5;}

/* 汉堡按钮 */
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--c-line);
  background:var(--c-surface);align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:16px;height:2px;background:var(--t1);border-radius:2px;transition:transform var(--trans),opacity var(--trans);}
.nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.is-open span:nth-child(2){opacity:0;}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
.nav-scrim{
  position:fixed;inset:0;background:rgba(14,23,20,.55);
  opacity:0;visibility:hidden;transition:opacity var(--trans),visibility var(--trans);z-index:55;
}
.nav-scrim.is-open{opacity:1;visibility:visible;}

/* ============ 页头 ============ */
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);margin-bottom:22px;
}
.breadcrumb a:hover{color:var(--c-brand-deep);}
.breadcrumb .sep{color:rgba(255,255,255,.35);}
.breadcrumb .current{color:var(--t1);}

.page-hero{
  position:relative;overflow:hidden;color:var(--w1);
  background:
    linear-gradient(105deg,rgba(14,23,20,.94) 0%,rgba(14,23,20,.80) 52%,rgba(14,23,20,.62) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  padding:64px 0 88px;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:120px;pointer-events:none;
  background:linear-gradient(180deg,rgba(246,248,246,0) 0%,rgba(246,248,246,.92) 100%);
}
.page-hero .breadcrumb{color:var(--w2);}
.page-hero .breadcrumb .sep{color:rgba(255,255,255,.32);}
.page-hero .breadcrumb .current{color:#fff;}
.page-hero .breadcrumb a:hover{color:#fff;}
.hero-inner{position:relative;z-index:2;max-width:900px;}
.page-hero h1{color:#fff;margin-bottom:20px;}
.page-hero h1 em{font-style:normal;color:var(--c-cyan);}
.hero-sub{font-size:17px;line-height:1.9;color:var(--w2);max-width:720px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:28px;margin-top:38px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
}
.hero-meta div{font-size:13px;color:var(--w2);line-height:1.75;}
.hero-meta strong{display:block;font-size:20px;color:#fff;font-weight:700;letter-spacing:.01em;}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.anchor-nav a{
  font-size:13px;padding:6px 14px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.24);color:var(--w1);
}
.anchor-nav a:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4);}

/* ============ 状态快照 ============ */
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--gap);}
.stat-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);
  transition:transform var(--trans),box-shadow var(--trans);
}
.stat-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.stat-label{font-size:13px;color:var(--t3);letter-spacing:.06em;margin-bottom:10px;}
.stat-value{font-size:28px;font-weight:700;line-height:1.2;color:var(--t1);}
.stat-value small{font-size:14px;font-weight:600;color:var(--t3);margin-left:4px;}
.stat-note{font-size:13px;color:var(--t2);margin-top:8px;line-height:1.75;}
.bar{height:6px;border-radius:99px;background:var(--c-bg);overflow:hidden;margin-top:14px;}
.bar__fill{height:100%;border-radius:99px;background:var(--c-cyan);}
.bar__fill--brand{background:var(--c-brand);}
.bar__fill--accent{background:var(--c-accent);}

/* ============ 主区两栏 ============ */
.layout-main{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:36px;align-items:start;}

/* 步骤流 */
.steps{position:relative;margin-top:8px;}
.step{
  position:relative;display:grid;grid-template-columns:56px minmax(0,1fr);gap:20px;
  padding-bottom:34px;
}
.step:not(:last-child)::before{
  content:"";position:absolute;left:27px;top:52px;bottom:0;
  border-left:1px dashed var(--c-line);
}
.step__num{
  width:56px;height:56px;border-radius:16px;display:grid;place-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);
  font-size:17px;font-weight:700;color:var(--c-brand-deep);
  box-shadow:var(--shadow-1);position:relative;z-index:2;
}
.step--done .step__num{background:var(--c-brand-soft);border-color:rgba(14,159,110,.35);}
.step__body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform var(--trans),box-shadow var(--trans),border-color var(--trans);
}
.step__body:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(14,159,110,.35);}
.step__body h3{font-size:19px;margin-bottom:10px;}
.step__body p{font-size:16px;line-height:1.85;color:var(--t2);}
.step__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}
.tag{
  font-size:13px;line-height:1.7;padding:3px 12px;border-radius:var(--r-pill);
  background:var(--c-brand-soft);color:var(--c-brand-deep);
}
.tag--accent{background:var(--c-accent-soft);color:#C94F16;}
.tag--muted{background:var(--c-bg);color:var(--t2);}

/* 侧栏 */
.side-col{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);
}
.side-card h3{font-size:16px;margin-bottom:14px;letter-spacing:.02em;}
.toc li+li{margin-top:2px;}
.toc a{
  display:flex;align-items:center;gap:10px;
  font-size:14px;color:var(--t2);padding:8px 10px;border-radius:9px;
}
.toc a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);}
.toc a .dot{width:6px;height:6px;border-radius:50%;background:var(--c-brand);flex-shrink:0;}
.entry-card{overflow:hidden;border:1px solid var(--c-line);border-radius:var(--r-card);background:var(--c-surface);box-shadow:var(--shadow-1);}
.entry-card img{width:100%;height:150px;object-fit:cover;transition:transform 200ms ease;}
.entry-card:hover img{transform:scale(1.03);}
.entry-card__body{padding:16px 18px 20px;}
.entry-card__body h4{font-size:16px;margin-bottom:8px;}
.entry-card__body p{font-size:13px;line-height:1.75;color:var(--t2);margin-bottom:14px;}
.side-tip{
  background:var(--c-ink);color:var(--w1);border-radius:var(--r-card);padding:22px;
  border:1px solid rgba(255,255,255,.12);
}
.side-tip h3{color:#fff;font-size:16px;margin-bottom:10px;}
.side-tip p{font-size:13px;line-height:1.85;color:var(--w2);}

/* ============ 准备清单 ============ */
.prep-wrap{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:36px;align-items:center;}
.prep-figure{border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-1);}
.prep-figure img{width:100%;height:340px;object-fit:cover;}
.prep-list{display:grid;gap:14px;}
.prep-item{
  display:grid;grid-template-columns:44px minmax(0,1fr);gap:16px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:18px 20px;box-shadow:var(--shadow-1);
  transition:transform var(--trans),box-shadow var(--trans);
}
.prep-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.prep-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
  background:var(--c-brand-soft);color:var(--c-brand-deep);font-size:16px;font-weight:700;
}
.prep-item h4{font-size:16px;margin-bottom:6px;}
.prep-item p{font-size:14px;line-height:1.8;color:var(--t2);}

/* ============ 异常处理 ============ */
.issues-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap);}
.issue-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:3px solid var(--c-accent);
  border-radius:var(--r-card);padding:20px 22px;box-shadow:var(--shadow-1);
  transition:transform var(--trans),box-shadow var(--trans);
}
.issue-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);}
.issue-card h3{font-size:17px;margin-bottom:8px;}
.issue-card p{font-size:14px;line-height:1.85;color:var(--t2);}
.issue-card .issue-fix{
  margin-top:12px;font-size:13px;color:var(--c-brand-deep);background:var(--c-brand-soft);
  border-radius:10px;padding:8px 12px;line-height:1.75;
}

/* ============ FAQ ============ */
.faq{max-width:820px;}
.faq details{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  margin-bottom:12px;overflow:hidden;transition:box-shadow var(--trans),border-color var(--trans);
}
.faq details:hover{box-shadow:var(--shadow-1);}
.faq details[open]{border-color:rgba(14,159,110,.35);box-shadow:var(--shadow-1);}
.faq summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--t1);
}
.faq summary::-webkit-details-marker{display:none;}
.faq summary::after{
  content:"";width:9px;height:9px;flex-shrink:0;
  border-right:2px solid var(--t3);border-bottom:2px solid var(--t3);
  transform:rotate(45deg);transition:transform var(--trans),border-color var(--trans);
}
.faq details[open] summary::after{transform:rotate(-135deg);border-color:var(--c-brand);}
.faq .faq-answer{
  padding:0 22px 20px 22px;margin-left:0;font-size:15.5px;line-height:1.85;color:var(--t2);
}
.faq details[open] .faq-answer{border-left:3px solid var(--c-brand);background:var(--c-bg);padding-top:14px;}

/* ============ CTA 通栏 ============ */
.cta-band{
  position:relative;color:var(--w1);overflow:hidden;
  background:
    linear-gradient(115deg,rgba(14,23,20,.92) 0%,rgba(7,113,78,.72) 55%,rgba(31,200,184,.45) 100%),
    url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  border-radius:18px;
  padding:52px 48px;
  display:flex;align-items:center;justify-content:space-between;gap:40px;
  box-shadow:var(--shadow-2);
}
.cta-band h2{color:#fff;font-size:28px;margin-bottom:12px;}
.cta-band p{font-size:15px;line-height:1.85;color:var(--w1);max-width:620px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;flex-shrink:0;}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:var(--w2);padding:64px 0 28px;margin-top:8px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo__main{color:#fff;}
.footer-brand .logo__sub{color:var(--w2);}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--w2);max-width:340px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px;letter-spacing:.04em;}
.footer-col ul li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--w2);}
.footer-col a:hover{color:#fff;}
.footer-col .contact-line{font-size:14px;line-height:1.8;color:var(--w2);}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:var(--t3);
}

/* ============ 返回顶部 ============ */
.to-top{
  position:fixed;right:24px;bottom:28px;width:44px;height:44px;border-radius:50%;
  background:var(--c-brand);color:#fff;display:grid;place-items:center;
  box-shadow:var(--shadow-2);opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--trans),transform var(--trans),visibility var(--trans),background-color var(--trans);
  z-index:70;
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:var(--c-brand-deep);}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{padding:0 28px;}
  .mega-panel{width:660px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .section{padding:64px 0;}
  h1{font-size:34px;}
  h2,.section-title{font-size:26px;}
  .nav-toggle{display:inline-flex;}
  .nav-main{
    position:fixed;left:0;right:0;top:60px;z-index:58;
    flex-direction:column;align-items:stretch;gap:2px;
    background:var(--c-surface);border-bottom:1px solid var(--c-line);
    padding:14px 24px 22px;max-height:calc(100vh - 60px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity 160ms ease,transform 160ms ease,visibility 160ms;
  }
  .nav-main.is-open{opacity:1;visibility:visible;transform:translateY(0);}
  .nav-main a{padding:13px 12px;font-size:16px;border-radius:10px;}
  .nav-main a.active::after{display:none;}
  .nav-main a.active{background:var(--c-brand-soft);color:var(--c-brand-deep);}
  .nav-bar{height:60px;gap:14px;}
  .mega-wrap{display:none;}
  .layout-main{grid-template-columns:1fr;}
  .side-col{position:static;}
  .stats-grid{grid-template-columns:repeat(2,1fr);}
  .prep-wrap{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .cta-band{flex-direction:column;align-items:flex-start;padding:40px 28px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85;}
  .section{padding:48px 0;}
  h1{font-size:28px;}
  h2,.section-title{font-size:22px;}
  h3{font-size:18px;}
  .page-hero{padding:40px 0 64px;}
  .hero-meta{gap:20px;}
  .issues-grid{grid-template-columns:1fr;}
  .stats-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .step{grid-template-columns:44px minmax(0,1fr);gap:14px;}
  .step__num{width:44px;height:44px;border-radius:13px;font-size:15px;}
  .step:not(:last-child)::before{left:21px;top:44px;}
}
@media (max-width:519px){
  .container{padding:0 16px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .cta-actions{width:100%;flex-direction:column;}
  .cta-actions .btn{width:100%;}
  .footer-bottom{flex-direction:column;}
  .to-top{right:16px;bottom:18px;}
}

/* roulang page: category2 */
:root{
  --c-ink:#0E1714;
  --c-ink-soft:#16302A;
  --c-brand:#0E9F6E;
  --c-brand-deep:#07714E;
  --c-brand-soft:#E6F6EF;
  --c-accent:#FF6A2B;
  --c-accent-soft:#FFF0E8;
  --c-cyan:#1FC8B8;
  --c-bg:#F6F8F6;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E5;
  --t1:#16211D;
  --t2:#56655F;
  --t3:#8B9A94;
  --d1:#EAF2EE;
  --d2:#A9BDB5;
  --r-card:14px;
  --r-btn:10px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,23,20,.06),0 8px 24px -12px rgba(14,23,20,.18);
  --shadow-2:0 12px 32px -14px rgba(14,23,20,.24);
  --w:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--t1);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:.012em;line-height:1.3}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
strong{font-weight:600}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--w);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.94);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:box-shadow .18s ease,border-color .18s ease,background .18s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 20px -14px rgba(14,23,20,.35)}
.nav-bar{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.logo__mark{
  width:36px;height:36px;border-radius:10px;flex:none;
  background:linear-gradient(135deg,var(--c-brand) 0%,#12b47d 60%,var(--c-cyan) 100%);
  color:#fff;font-size:17px;font-weight:700;display:grid;place-items:center;
  box-shadow:0 6px 16px -8px rgba(14,159,110,.8);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__main{font-size:17px;font-weight:700;color:var(--t1)}
.logo__sub{font-size:11px;color:var(--t3);letter-spacing:.14em}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-main a{
  position:relative;padding:8px 12px;border-radius:8px;
  font-size:15px;color:var(--t2);transition:color .16s ease,background .16s ease;
}
.nav-main a:hover{color:var(--t1);background:var(--c-brand-soft)}
.nav-main a.active{color:var(--t1);font-weight:600}
.nav-main a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:-6px;height:2px;
  background:var(--c-brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:7px;
  height:38px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;color:var(--t2);
  font-size:14px;transition:border-color .16s ease,color .16s ease,background .16s ease;
}
.mega-trigger:hover,.mega-trigger[aria-expanded="true"]{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft)}
.caret{width:0;height:0;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:760px;
  background:#fff;border:1px solid var(--c-line);border-radius:16px;
  box-shadow:var(--shadow-2);
  padding:24px;display:grid;grid-template-columns:1.05fr 1fr;gap:28px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .16s ease,transform .16s ease,visibility .16s;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;letter-spacing:.1em;color:var(--t3);font-weight:600;margin-bottom:14px}
.mega-list li+li{margin-top:6px}
.mega-list a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;font-size:15px;color:var(--t2);transition:background .16s ease,color .16s ease}
.mega-list a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.mega-dot{
  width:26px;height:26px;border-radius:8px;flex:none;display:grid;place-items:center;
  background:var(--c-brand-soft);color:var(--c-brand-deep);font-size:13px;font-weight:600;
}
.mega-post{display:flex;gap:12px;padding:10px;border-radius:12px;transition:background .16s ease}
.mega-post:hover{background:var(--c-bg)}
.mega-post img{width:76px;height:52px;object-fit:cover;border-radius:8px;flex:none;background:var(--c-brand-soft)}
.mega-post span{font-size:13px;color:var(--t3);line-height:1.6}
.mega-post strong{display:block;font-size:14px;color:var(--t1);font-weight:600;margin-bottom:2px}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:background .16s ease,color .16s ease,border-color .16s ease,transform .16s ease,box-shadow .16s ease;
}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--primary{background:var(--c-brand);color:#fff;box-shadow:0 10px 24px -14px rgba(14,159,110,.9)}
.btn--primary:hover{background:var(--c-brand-deep);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:#fff;border-color:var(--c-line);color:var(--t1)}
.btn--ghost:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft)}
.btn--accent{background:var(--c-accent);color:#fff;box-shadow:0 10px 24px -14px rgba(255,106,43,.9)}
.btn--accent:hover{background:#e85a1d;transform:translateY(-1px)}
.btn--outline-light{background:transparent;border-color:rgba(255,255,255,.24);color:var(--d1)}
.btn--outline-light:hover{background:rgba(255,255,255,.10)}
.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- Page head ---------- */
.pagehead{
  position:relative;overflow:hidden;background:var(--c-ink);
  background-image:linear-gradient(180deg,rgba(14,23,20,.86) 0%,rgba(14,23,20,.78) 55%,rgba(14,23,20,.96) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  padding:26px 0 56px;color:var(--d1);
}
.crumb{font-size:13.5px;color:var(--d2);display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:34px}
.crumb a{color:var(--d2);transition:color .16s ease}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb .sep{opacity:.5}
.crumb .now{color:#fff}
.pagehead__tag{
  display:inline-flex;align-items:center;gap:8px;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(31,200,184,.14);border:1px solid rgba(31,200,184,.34);color:#8FF0E5;
  font-size:13px;margin-bottom:18px;
}
.pagehead h1{font-size:42px;line-height:1.25;margin-bottom:16px;color:#fff;max-width:820px}
.pagehead__lead{font-size:17px;line-height:1.9;color:var(--d2);max-width:720px;margin-bottom:26px}
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px}
.anchor-nav a{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);
  border:1px solid rgba(255,255,255,.20);color:var(--d1);font-size:14px;
  transition:background .16s ease,border-color .16s ease,color .16s ease;
}
.anchor-nav a:hover{background:rgba(255,255,255,.10);border-color:rgba(255,255,255,.4);color:#fff}
.pagehead__meta{
  display:flex;flex-wrap:wrap;gap:26px;margin-top:30px;padding-top:24px;
  border-top:1px solid rgba(255,255,255,.12);
}
.pagehead__meta div{font-size:14px;color:var(--d2)}
.pagehead__meta strong{display:block;font-size:22px;color:#fff;font-weight:700;margin-bottom:2px}

/* ---------- Layout ---------- */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--bg{background:#fff;border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.sec-head{max-width:820px;margin-bottom:34px}
.sec-head h2{font-size:31px;margin-bottom:14px}
.sec-head p{color:var(--t2);font-size:16px}
.eyebrow{
  display:inline-block;font-size:12.5px;font-weight:600;letter-spacing:.14em;
  color:var(--c-brand-deep);background:var(--c-brand-soft);padding:5px 12px;border-radius:var(--r-pill);margin-bottom:14px;
}
.layout-2col{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:40px;align-items:start}
.col-main{display:flex;flex-direction:column;gap:30px}
.col-side{position:sticky;top:96px;display:flex;flex-direction:column;gap:22px}

/* ---------- Panels / blocks ---------- */
.panel{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);box-shadow:var(--shadow-1);padding:28px}
.panel--flat{box-shadow:none}
.feature-media{border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line);background:var(--c-brand-soft)}
.feature-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform .2s ease}
.feature:hover .feature-media img{transform:scale(1.03)}
.feature{margin-bottom:0}
.feature h3{font-size:23px;margin:22px 0 12px}
.feature .figcap{font-size:13px;color:var(--t3);text-align:center;margin:10px 0 0}
.dot-list{margin-top:16px;display:flex;flex-direction:column;gap:10px}
.dot-list li{position:relative;padding-left:22px;font-size:16px;color:var(--t2)}
.dot-list li::before{
  content:"";position:absolute;left:4px;top:.72em;width:8px;height:8px;border-radius:50%;
  background:var(--c-brand);
}
.dot-list li strong{color:var(--t1)}

/* ---------- Data bars ---------- */
.metric-list{display:flex;flex-direction:column;gap:20px;margin-top:8px}
.metric__head{display:flex;justify-content:space-between;align-items:baseline;font-size:15px;color:var(--t2);margin-bottom:9px}
.metric__head strong{font-size:17px;color:var(--c-brand-deep);font-variant-numeric:tabular-nums}
.metric__track{height:10px;border-radius:var(--r-pill);background:var(--c-brand-soft);overflow:hidden}
.metric__fill{display:block;height:100%;border-radius:var(--r-pill);background:linear-gradient(90deg,var(--c-cyan),#37dbca)}
.metric__fill--brand{background:linear-gradient(90deg,var(--c-brand),#2fc58d)}
.metric__fill--accent{background:linear-gradient(90deg,var(--c-accent),#ff9159)}
.metric__note{font-size:13px;color:var(--t3);margin-top:8px}

/* ---------- Compare ---------- */
.compare{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:22px}
.compare__card{border:1px solid var(--c-line);border-radius:12px;padding:18px 20px;background:var(--c-surface)}
.compare__card h4{font-size:16px;margin-bottom:6px}
.compare__card span{font-size:13px;color:var(--t3)}

/* ---------- Chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--c-brand-soft);color:var(--c-brand-deep);font-size:13.5px;
  transition:background .16s ease,color .16s ease;
}
.chip:hover{background:#d5f0e4}
.chip--accent{background:var(--c-accent-soft);color:#c04c14}
.chip--line{background:#fff;border:1px solid var(--c-line);color:var(--t2)}
.chip--line:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft)}

/* ---------- Rank list ---------- */
.rank-list{display:flex;flex-direction:column}
.rank-list li+li{border-top:1px solid var(--c-line)}
.rank-item{display:flex;gap:12px;padding:14px 6px;border-radius:10px;transition:background .16s ease}
.rank-item:hover{background:var(--c-brand-soft)}
.rank-no{
  width:24px;height:24px;border-radius:7px;flex:none;display:grid;place-items:center;
  background:var(--c-brand-soft);color:var(--c-brand-deep);font-size:13px;font-weight:700;margin-top:2px;
}
.rank-list li:nth-child(1) .rank-no{background:var(--c-accent-soft);color:#c04c14}
.rank-item a{font-size:15px;font-weight:600;color:var(--t1);display:block;transition:color .16s ease}
.rank-item a:hover{color:var(--c-brand-deep)}
.rank-item em{display:block;font-style:normal;font-size:13px;color:var(--t3);margin-top:3px}

/* ---------- Tip card ---------- */
.tip-card{
  border:1px solid var(--c-line);border-left:4px solid var(--c-accent);border-radius:12px;
  background:var(--c-accent-soft);padding:20px 22px;
}
.tip-card h4{font-size:16px;margin-bottom:8px;color:#a83f0e}
.tip-card p{font-size:14.5px;line-height:1.85;color:#7a4a2b;margin:0}
.tip-card--brand{border-left-color:var(--c-brand);background:var(--c-brand-soft)}
.tip-card--brand h4{color:var(--c-brand-deep)}
.tip-card--brand p{color:var(--t2)}

/* ---------- Entry cards (2+1) ---------- */
.entry-grid{display:grid;grid-template-columns:1.55fr 1fr 1fr;gap:22px}
.entry-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-1);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.entry-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#cfe8dd}
.entry-card h3{font-size:19px;margin-bottom:10px}
.entry-card p{font-size:14.5px;color:var(--t2);margin-bottom:18px}
.entry-card .link-more{margin-top:auto;font-size:14.5px;font-weight:600;color:var(--c-brand-deep)}
.entry-card .link-more:hover{text-decoration:underline}
.entry-card--media{padding:0;overflow:hidden}
.entry-card--media img{width:100%;aspect-ratio:16/9;object-fit:cover}
.entry-card--media .body{padding:22px 24px 24px;display:flex;flex-direction:column;flex:1}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);margin-bottom:12px;overflow:hidden;transition:border-color .16s ease}
.faq-item.is-open{border-color:#cfe8dd}
.faq-q{
  width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
  padding:20px 24px;text-align:left;font-size:17px;font-weight:600;color:var(--t1);
}
.faq-q:hover{background:var(--c-brand-soft)}
.faq-arrow{width:9px;height:9px;border-right:2px solid var(--t3);border-bottom:2px solid var(--t3);transform:rotate(45deg);transition:transform .18s ease;flex:none}
.faq-item.is-open .faq-arrow{transform:rotate(-135deg);border-color:var(--c-brand-deep)}
.faq-a{display:none;padding:0 24px 22px;border-left:3px solid var(--c-brand);background:var(--c-bg);font-size:15.5px;line-height:1.85;color:var(--t2)}
.faq-item.is-open .faq-a{display:block}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;color:var(--d1);
  background-color:var(--c-ink);
  background-image:linear-gradient(105deg,rgba(14,159,110,.32) 0%,rgba(31,200,184,.16) 48%,rgba(14,23,20,.92) 100%),url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:40px;padding:56px 0}
.cta-band h2{font-size:29px;color:#fff;margin-bottom:12px}
.cta-band p{color:var(--d2);font-size:16px;max-width:620px;margin:0}
.cta-actions{display:flex;gap:14px;flex:none}

/* ---------- Footer ---------- */
.site-footer{background:var(--c-ink);color:var(--d2);padding:72px 0 30px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:32px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.12)}
.footer-brand .logo__main{color:#fff}
.footer-brand .logo__sub{color:var(--d2)}
.footer-brand p{font-size:14.5px;line-height:1.85;color:var(--d2);margin:18px 0 0;max-width:340px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a,.contact-line{font-size:14.5px;color:var(--d2);transition:color .16s ease}
.footer-col a:hover{color:#fff;text-decoration:underline}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-top:24px;font-size:13.5px;color:var(--d2)}

/* ---------- Back to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--c-brand);color:#fff;display:grid;place-items:center;
  box-shadow:0 12px 28px -12px rgba(14,159,110,.9);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s,background .16s ease;z-index:70;
}
.to-top.is-on{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-brand-deep)}
.to-top svg{width:18px;height:18px;fill:currentColor}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
  .pagehead h1{font-size:38px}
}
@media (max-width:1023px){
  .nav-main{display:none}
  .nav-toggle{display:flex}
  .mega-panel{display:none}
  .layout-2col{grid-template-columns:1fr}
  .col-side{position:static}
  .entry-grid{grid-template-columns:1fr 1fr}
  .entry-card--media{grid-column:span 2}
  .section{padding:64px 0}
  .pagehead h1{font-size:32px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 18px}
  .nav-bar{height:60px;gap:14px}
  .nav-actions .btn--login{display:none}
  .pagehead{padding:20px 0 44px}
  .pagehead h1{font-size:27px}
  .pagehead__lead{font-size:15.5px}
  .pagehead__meta{gap:18px}
  .pagehead__meta strong{font-size:19px}
  .section{padding:48px 0}
  .sec-head h2{font-size:23px}
  .panel{padding:20px}
  .feature h3{font-size:19px}
  .compare{grid-template-columns:1fr}
  .entry-grid{grid-template-columns:1fr}
  .entry-card--media{grid-column:span 1}
  .cta-band__inner{flex-direction:column;align-items:flex-start;padding:44px 0;gap:24px}
  .cta-band h2{font-size:23px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
  .footer-brand{grid-column:span 2}
  .faq-q{font-size:16px;padding:16px 18px}
  .faq-a{padding:0 18px 18px}
}
@media (max-width:519px){
  .btn{width:100%}
  .cta-actions{flex-direction:column;width:100%}
  .footer-grid{grid-template-columns:1fr}
  .footer-brand{grid-column:span 1}
  .anchor-nav a{height:34px;font-size:13px;padding:0 13px}
}

/* roulang page: category4 */
:root{
  --c-ink:#0E1714;
  --c-ink-soft:#16302A;
  --c-brand:#0E9F6E;
  --c-brand-deep:#07714E;
  --c-brand-soft:#E6F6EF;
  --c-accent:#FF6A2B;
  --c-accent-soft:#FFF0E8;
  --c-cyan:#1FC8B8;
  --c-bg:#F6F8F6;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E5;
  --t1:#16211D;
  --t2:#56655F;
  --t3:#8B9A94;
  --d1:#EAF2EE;
  --d2:#A9BDB5;
  --r-card:14px;
  --r-btn:10px;
  --r-table:12px;
  --r-img:12px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(14,23,20,.06),0 8px 24px -12px rgba(14,23,20,.18);
  --shadow-2:0 12px 32px -14px rgba(14,23,20,.24);
  --container:1200px;
  --read:820px;
  --sp-section:96px;
  --ease:180ms ease;
}
*,*::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,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.012em;
  color:var(--t1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--c-brand);text-decoration:none;transition:color var(--ease),border-color var(--ease),background-color var(--ease)}
a:hover{color:var(--c-brand-deep)}
h1,h2,h3,h4{margin:0;font-weight:700;color:var(--t1);letter-spacing:.014em;line-height:1.35}
h1{font-size:42px;line-height:1.25}
h2{font-size:31px;line-height:1.3}
h3{font-size:22px;line-height:1.4}
h4{font-size:18px;line-height:1.45}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.num{font-variant-numeric:tabular-nums}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--c-brand);color:#fff;padding:10px 18px;z-index:999}
.skip-link:focus{left:12px;top:12px}
/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:16px;font-weight:600;letter-spacing:.02em;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn--sm{height:38px;padding:0 16px;font-size:14px}
.btn--block{width:100%}
.btn--primary{background:var(--c-brand);color:#fff}
.btn--primary:hover{background:var(--c-brand-deep);color:#fff;transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--accent{background:var(--c-accent);color:#fff}
.btn--accent:hover{background:#E85A1D;color:#fff;transform:translateY(-1px)}
.btn--accent:active{transform:translateY(0)}
.btn--ghost{background:#fff;border-color:var(--c-line);color:var(--t1)}
.btn--ghost:hover{background:var(--c-brand-soft);border-color:var(--c-brand);color:var(--c-brand-deep)}
.btn--onDark{background:transparent;border-color:rgba(255,255,255,.24);color:var(--d1)}
.btn--onDark:hover{background:rgba(255,255,255,.10);color:#fff}
.btn[aria-disabled="true"],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}
/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(160%) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 20px -14px rgba(14,23,20,.35)}
.nav-bar{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:38px;height:38px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-brand),#0BC88C);
  color:#fff;font-weight:700;font-size:18px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -8px rgba(14,159,110,.9);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__main{font-size:18px;font-weight:700;color:var(--t1);letter-spacing:.03em}
.logo__sub{font-size:11px;color:var(--t3);letter-spacing:.22em}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-main a{
  position:relative;padding:10px 12px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--t2);white-space:nowrap;
}
.nav-main a:hover{color:var(--c-brand-deep);background:var(--c-brand-soft)}
.nav-main a.active{color:var(--t1);font-weight:600}
.nav-main a.active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  background:var(--c-brand);border-radius:2px;
}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid var(--c-line);background:#fff;
  font-size:14px;font-weight:600;color:var(--t1);
  transition:border-color var(--ease),background-color var(--ease),color var(--ease);
}
.mega-trigger:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft)}
.caret{width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform var(--ease)}
.mega-wrap.is-open .caret{transform:rotate(-135deg) translateY(-2px)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:760px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-2);padding:22px;
  display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity 160ms ease,transform 160ms ease,visibility 160ms ease;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;color:var(--t3);letter-spacing:.12em;font-weight:600;margin-bottom:12px}
.mega-list li+li{margin-top:4px}
.mega-list a{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:9px;font-size:15px;color:var(--t1)}
.mega-list a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.mega-dot{
  width:26px;height:26px;border-radius:8px;background:var(--c-brand-soft);color:var(--c-brand-deep);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;
}
.mega-post{display:flex;gap:10px;padding:8px;border-radius:10px;align-items:flex-start}
.mega-post:hover{background:var(--c-brand-soft)}
.mega-post img{width:64px;height:46px;object-fit:cover;border-radius:8px;flex-shrink:0}
.mega-post span{font-size:13px;color:var(--t3);line-height:1.6}
.mega-post strong{display:block;font-size:14px;font-weight:600;color:var(--t1);margin-bottom:2px}
.mega-entry{
  border:1px solid var(--c-line);border-radius:12px;padding:14px;background:var(--c-bg);
}
.mega-entry img{width:100%;height:96px;object-fit:cover;border-radius:9px;margin-bottom:10px}
.mega-entry h5{margin:0 0 6px;font-size:15px;font-weight:700;color:var(--t1)}
.mega-entry p{font-size:13px;color:var(--t2);margin:0 0 10px;line-height:1.7}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);
  background:#fff;flex-direction:column;align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px;transition:transform var(--ease),opacity var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-drawer{display:none;border-top:1px solid var(--c-line);background:#fff;padding:14px 0 22px}
.nav-drawer.is-open{display:block}
.nav-drawer a{display:block;padding:12px 4px;font-size:15px;color:var(--t1);border-bottom:1px solid var(--c-line)}
.nav-drawer a:last-of-type{border-bottom:0}
.nav-drawer a.active{color:var(--c-brand-deep);font-weight:600}
.nav-drawer .btn{margin-top:14px}
body.drawer-open{overflow:hidden}
/* ---------- page hero ---------- */
.page-hero{
  position:relative;
  background-color:var(--c-ink);
  background-size:cover;background-position:center;
  color:var(--d1);
  padding:56px 0 64px;
}
.page-hero::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:110px;
  background:linear-gradient(rgba(246,248,246,0),rgba(246,248,246,.92));
  pointer-events:none;
}
.page-hero .container{position:relative;z-index:2}
.page-hero h1{color:#fff;font-size:40px;max-width:900px;margin-bottom:14px}
.page-hero__lead{color:var(--d2);font-size:17px;max-width:720px;margin-bottom:22px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--d2);margin-bottom:18px}
.breadcrumb a{color:var(--d2)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.35)}
.breadcrumb .current{color:#fff;font-weight:500}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.14em;color:#7FE3BE;
  background:rgba(14,159,110,.16);border:1px solid rgba(127,227,190,.28);
  padding:5px 12px;border-radius:var(--r-pill);margin-bottom:16px;
}
.hero-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:6px}
.hero-facts span{
  font-size:13.5px;color:var(--d1);
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  padding:7px 14px;border-radius:var(--r-pill);
}
/* ---------- sections ---------- */
.section{padding:var(--sp-section) 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:780px;margin-bottom:34px}
.section-head h2{margin-bottom:14px}
.section-head p{color:var(--t2);font-size:16.5px}
.eyebrow-dark{
  display:inline-block;font-size:13px;font-weight:600;letter-spacing:.14em;
  color:var(--c-brand-deep);background:var(--c-brand-soft);
  padding:5px 12px;border-radius:var(--r-pill);margin-bottom:14px;
}
/* ---------- qa layout ---------- */
.qa-layout{display:grid;grid-template-columns:240px 1fr;gap:40px;align-items:start}
.anchor-nav{
  position:sticky;top:92px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.anchor-nav__title{font-size:13px;letter-spacing:.12em;color:var(--t3);font-weight:600;margin-bottom:12px}
.anchor-nav ul li+li{margin-top:2px}
.anchor-nav ul a{
  display:block;padding:9px 10px;border-radius:9px;font-size:14.5px;color:var(--t2);
  border-left:3px solid transparent;
}
.anchor-nav ul a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);border-left-color:var(--c-brand)}
.anchor-nav .btn{margin-top:16px}
.qa-group{margin-bottom:44px;scroll-margin-top:96px}
.qa-group:last-child{margin-bottom:0}
.qa-group__head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.qa-group__head h2{font-size:26px;position:relative;padding-left:16px}
.qa-group__head h2::before{
  content:"";position:absolute;left:0;top:8px;bottom:6px;width:4px;border-radius:3px;background:var(--c-brand);
}
.qa-group__count{
  font-size:13px;color:var(--c-brand-deep);background:var(--c-brand-soft);
  padding:3px 10px;border-radius:var(--r-pill);font-weight:600;
}
.qa-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.qa-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-1);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.qa-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#D5DED9}
.qa-card h3{font-size:17.5px;margin-bottom:10px;line-height:1.55}
.qa-card p{font-size:15px;line-height:1.85;color:var(--t2);margin:0}
.qa-card__tag{
  display:inline-block;font-size:12.5px;font-weight:600;
  color:var(--c-brand-deep);background:var(--c-brand-soft);
  padding:3px 10px;border-radius:var(--r-pill);margin-bottom:10px;
}
/* ---------- safety warnings ---------- */
.warn-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.warn-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-left:4px solid var(--c-accent);
  border-radius:var(--r-card);padding:22px;box-shadow:var(--shadow-1);
  transition:transform var(--ease),box-shadow var(--ease);
}
.warn-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.warn-card__badge{
  display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:700;
  color:#C2431A;background:var(--c-accent-soft);padding:4px 11px;border-radius:var(--r-pill);margin-bottom:12px;
}
.warn-card h3{font-size:18px;margin-bottom:10px}
.warn-card p{font-size:15px;color:var(--t2);line-height:1.85;margin:0}
/* ---------- flow ---------- */
.flow{display:grid;gap:0;max-width:900px}
.flow-step{
  position:relative;display:grid;grid-template-columns:56px 1fr;gap:20px;
  padding-bottom:30px;
}
.flow-step:last-child{padding-bottom:0}
.flow-step::before{
  content:"";position:absolute;left:27px;top:52px;bottom:0;width:2px;
  background:repeating-linear-gradient(to bottom,var(--c-line) 0 6px,transparent 6px 12px);
}
.flow-step:last-child::before{display:none}
.flow-step__num{
  position:relative;z-index:2;width:56px;height:56px;border-radius:16px;
  background:var(--c-brand-soft);color:var(--c-brand-deep);
  font-weight:700;font-size:19px;display:flex;align-items:center;justify-content:center;
  border:1px solid #CFEADD;font-variant-numeric:tabular-nums;
}
.flow-step__body{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:18px 22px;box-shadow:var(--shadow-1);
}
.flow-step__body h3{font-size:18px;margin-bottom:8px}
.flow-step__body p{font-size:15px;color:var(--t2);margin:0;line-height:1.85}
.flow-step__meta{margin-top:10px;font-size:13px;color:var(--t3)}
/* ---------- contact cards ---------- */
.contact-cards{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:22px}
.contact-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform var(--ease),box-shadow var(--ease);
}
.contact-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2)}
.contact-card--wide{grid-column:span 1}
.contact-card img{width:100%;height:150px;object-fit:cover;margin-bottom:16px}
.contact-card h3{font-size:18.5px;margin-bottom:10px}
.contact-card p{font-size:15px;color:var(--t2);line-height:1.85}
.contact-card .contact-list{margin:14px 0 18px}
.contact-card .contact-list li{
  font-size:14.5px;color:var(--t2);padding:8px 0;border-bottom:1px dashed var(--c-line);
  display:flex;justify-content:space-between;gap:12px;
}
.contact-card .contact-list li:last-child{border-bottom:0}
.contact-card .contact-list strong{color:var(--t1);font-weight:600}
.contact-card .btn{margin-top:auto}
/* ---------- cta band ---------- */
.cta-band{
  position:relative;background-color:var(--c-ink);
  background-image:linear-gradient(115deg,rgba(14,159,110,.42),rgba(31,200,184,.14) 58%,rgba(14,23,20,.9));
  background-size:cover;background-position:center;
  color:var(--d1);border-radius:0;
}
.cta-band__inner{display:flex;align-items:center;justify-content:space-between;gap:36px;padding:56px 0}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:12px}
.cta-band p{color:var(--d2);font-size:16.5px;max-width:620px;margin:0}
.cta-band__actions{display:flex;gap:14px;flex-shrink:0}
/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:var(--d2);padding:64px 0 26px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.1fr;gap:32px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand .logo__main{color:#fff}
.footer-brand .logo__sub{color:var(--d2)}
.footer-brand p{font-size:14px;line-height:1.85;color:var(--d2);max-width:330px}
.footer-col h4{font-size:14px;color:#fff;letter-spacing:.08em;margin-bottom:14px}
.footer-col li+li{margin-top:9px}
.footer-col a{font-size:14px;color:var(--d2)}
.footer-col a:hover{color:#fff}
.contact-line{font-size:14px;color:var(--d2);line-height:1.8}
.footer-bottom{
  margin-top:42px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(169,189,181,.85);
}
/* ---------- to top ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--c-brand);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 24px -12px rgba(14,23,20,.6);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--ease),transform var(--ease),visibility var(--ease),background-color var(--ease);
  z-index:70;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-brand-deep)}
/* ---------- responsive ---------- */
@media (min-width:1280px){
  .container{max-width:var(--container);padding:0 32px}
}
@media (max-width:1279px){
  .container{max-width:100%;padding:0 28px}
}
@media (max-width:1100px){
  .mega-panel{width:640px;grid-template-columns:1fr 1fr;gap:20px}
  .mega-panel .mega-col--entry{display:none}
}
@media (max-width:1023px){
  .nav-main{display:none}
  .nav-actions .btn--login{display:none}
  .nav-toggle{display:flex}
  .mega-wrap{display:none}
  .qa-layout{grid-template-columns:1fr;gap:28px}
  .anchor-nav{position:static;top:auto}
  .anchor-nav ul{display:flex;flex-wrap:wrap;gap:8px}
  .anchor-nav ul li+li{margin-top:0}
  .anchor-nav ul a{border-left:0;border:1px solid var(--c-line);border-radius:var(--r-pill);padding:6px 14px;font-size:14px}
  .warn-grid{grid-template-columns:1fr 1fr}
  .contact-cards{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .section{padding:64px 0}
  .cta-band__inner{flex-direction:column;align-items:flex-start;padding:48px 0}
  h1{font-size:32px}
  .page-hero h1{font-size:32px}
  h2{font-size:24px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 16px}
  .nav-bar{height:60px;gap:12px}
  .qa-grid{grid-template-columns:1fr}
  .warn-grid{grid-template-columns:1fr}
  .contact-cards{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .section{padding:48px 0}
  .section--tight{padding:44px 0}
  .page-hero{padding:40px 0 48px}
  .page-hero h1{font-size:26px}
  h1{font-size:28px}
  h2{font-size:22px}
  h3{font-size:18px}
  .qa-group__head h2{font-size:21px}
  .flow-step{grid-template-columns:44px 1fr;gap:14px}
  .flow-step__num{width:44px;height:44px;border-radius:13px;font-size:16px}
  .flow-step::before{left:21px;top:44px}
  .cta-band h2{font-size:23px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media (max-width:479px){
  .cta-band__actions{flex-direction:column;width:100%}
  .cta-band__actions .btn{width:100%}
  .hero-facts{flex-direction:column;align-items:flex-start}
  .btn{width:100%}
  .nav-actions .btn{width:auto}
  .anchor-nav .btn{width:100%}
  .page-hero h1{font-size:24px}
  .mega-trigger{width:auto}
}

/* roulang page: category3 */
:root{
  --c-ink:#0E1714;
  --c-ink-soft:#16302A;
  --c-brand:#0E9F6E;
  --c-brand-deep:#07714E;
  --c-brand-soft:#E6F6EF;
  --c-accent:#FF6A2B;
  --c-accent-soft:#FFF0E8;
  --c-cyan:#1FC8B8;
  --c-bg:#F6F8F6;
  --c-surface:#FFFFFF;
  --c-line:#E2E8E5;
  --t1:#16211D;
  --t2:#56655F;
  --t3:#8B9A94;
  --d1:#EAF2EE;
  --d2:#A9BDB5;
  --r-card:14px;
  --r-btn:10px;
  --r-table:12px;
  --r-img:12px;
  --shadow-1:0 1px 2px rgba(14,23,20,.06),0 8px 24px -12px rgba(14,23,20,.18);
  --shadow-2:0 12px 32px -14px rgba(14,23,20,.24);
  --container:1200px;
  --tr:180ms ease;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:17px;
  line-height:1.9;
  letter-spacing:.01em;
  color:var(--t1);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:color var(--tr),border-color var(--tr),background-color var(--tr)}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible{
  outline:2px solid var(--c-accent);outline-offset:2px;border-radius:6px
}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.3;letter-spacing:.015em}
p{margin:0 0 18px}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px}
.section{padding:92px 0}
.section--tight{padding:64px 0}
.section--surface{background:var(--c-surface)}
.section--soft{background:#F0F5F2}

/* ---------- 通用标题 ---------- */
.sec-head{max-width:820px;margin-bottom:36px}
.sec-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;line-height:1.7;font-weight:600;letter-spacing:.08em;
  color:var(--c-brand-deep);background:var(--c-brand-soft);
  border-radius:999px;padding:5px 14px;margin-bottom:14px;
}
.sec-head h2{font-size:31px;margin-bottom:14px}
.sec-head p{font-size:16px;line-height:1.9;color:var(--t2)}
.lead{font-size:17px;line-height:1.95;color:var(--t2);max-width:820px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:16px;font-weight:600;line-height:1;
  border:1px solid transparent;
  transition:background-color var(--tr),color var(--tr),border-color var(--tr),transform var(--tr),box-shadow var(--tr);
  white-space:nowrap;
}
.btn--primary{background:var(--c-brand);color:#fff;box-shadow:0 6px 18px -10px rgba(14,159,110,.7)}
.btn--primary:hover{background:var(--c-brand-deep);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px -10px rgba(255,106,43,.75)}
.btn--accent:hover{background:#E85C1F;transform:translateY(-1px)}
.btn--ghost{background:var(--c-surface);border-color:var(--c-line);color:var(--t1)}
.btn--ghost:hover{border-color:var(--c-brand);color:var(--c-brand-deep);background:var(--c-brand-soft)}
.btn--dark-ghost{background:transparent;border-color:rgba(255,255,255,.24);color:#fff}
.btn--dark-ghost:hover{background:rgba(255,255,255,.10)}
.btn--sm{height:38px;padding:0 16px;font-size:14px;border-radius:9px}
.btn--full{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border-radius:999px;padding:4px 12px;font-size:13px;font-weight:600;line-height:1.6;
}
.badge--brand{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.badge--accent{background:var(--c-accent-soft);color:#C24A16}
.badge--cyan{background:rgba(31,200,184,.14);color:#0C7A70}
.badge--dark{background:rgba(255,255,255,.14);color:#EAF2EE}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.96);
  backdrop-filter:saturate(150%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--tr),border-color var(--tr);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 6px 22px -18px rgba(14,23,20,.5)}
.nav-bar{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.logo__mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(140deg,var(--c-brand),var(--c-brand-deep));
  color:#fff;font-size:19px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px -10px rgba(14,159,110,.9);
}
.logo__text{display:flex;flex-direction:column;line-height:1.15}
.logo__main{font-size:17px;font-weight:700;letter-spacing:.02em}
.logo__sub{font-size:11px;color:var(--t3);letter-spacing:.16em}
.nav-main{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-main a{
  position:relative;padding:10px 14px;border-radius:9px;
  font-size:15px;font-weight:500;color:var(--t2);
}
.nav-main a:hover{color:var(--t1);background:var(--c-brand-soft)}
.nav-main a.active{color:var(--t1);font-weight:700}
.nav-main a.active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--c-brand);border-radius:2px;
}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.mega-wrap{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;border-radius:9px;
  border:1px solid var(--c-line);background:var(--c-surface);
  font-size:14px;font-weight:600;color:var(--t1);
  transition:border-color var(--tr),background-color var(--tr);
}
.mega-trigger:hover{border-color:var(--c-brand);background:var(--c-brand-soft);color:var(--c-brand-deep)}
.caret{width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform var(--tr)}
.mega-wrap:hover .caret,.mega-wrap:focus-within .caret,.mega-wrap.is-open .caret{transform:rotate(225deg) translateY(-2px)}
.mega-panel{
  position:absolute;right:0;top:calc(100% + 12px);width:760px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:16px;
  box-shadow:var(--shadow-2);padding:24px;
  display:grid;grid-template-columns:1fr 1.25fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity 160ms ease,transform 160ms ease,visibility 160ms ease;
}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel,.mega-wrap.is-open .mega-panel{
  opacity:1;visibility:visible;transform:translateY(0)
}
.mega-col h4{font-size:13px;color:var(--t3);letter-spacing:.1em;margin-bottom:12px;font-weight:600}
.mega-list li+li{margin-top:4px}
.mega-list a{
  display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:10px;
  font-size:15px;color:var(--t2);
}
.mega-list a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.mega-dot{
  width:26px;height:26px;border-radius:8px;flex:0 0 26px;
  background:var(--c-brand-soft);color:var(--c-brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;
}
.mega-post{display:flex;gap:12px;padding:10px;border-radius:12px;align-items:flex-start}
.mega-post:hover{background:#F2F7F4}
.mega-post img{width:72px;height:52px;border-radius:9px;object-fit:cover;flex:0 0 72px}
.mega-post span{font-size:13px;color:var(--t3);line-height:1.6}
.mega-post strong{display:block;font-size:14.5px;color:var(--t1);font-weight:600;line-height:1.5;margin-bottom:3px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);flex-direction:column;align-items:center;justify-content:center;gap:4px}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--t1);border-radius:2px}

/* 抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,23,20,.55);z-index:80;
  opacity:0;visibility:hidden;transition:opacity var(--tr),visibility var(--tr);
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:90;
  background:var(--c-surface);padding:20px;overflow-y:auto;
  transform:translateX(102%);transition:transform 200ms ease;
  display:flex;flex-direction:column;gap:18px;
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between}
.drawer-close{width:38px;height:38px;border-radius:10px;border:1px solid var(--c-line);font-size:20px;line-height:1;color:var(--t2)}
.drawer-nav{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--c-line);padding-top:12px}
.drawer-nav a{padding:12px 10px;border-radius:10px;font-size:16px;color:var(--t2)}
.drawer-nav a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.drawer-nav a.active{color:var(--t1);font-weight:700;background:var(--c-brand-soft)}

/* ---------- 面包屑 ---------- */
.crumb{font-size:13.5px;color:var(--t3);padding:18px 0 0}
.crumb ol{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.crumb li{display:flex;align-items:center;gap:6px}
.crumb li+li::before{content:"/";color:#C6D2CD}
.crumb a:hover{color:var(--c-brand-deep)}
.crumb [aria-current="page"]{color:var(--t1)}

/* ---------- 页头 Hero ---------- */
.page-hero{
  position:relative;margin-top:20px;overflow:hidden;color:var(--d1);
  background-color:var(--c-ink);
}
.page-hero__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
}
.page-hero__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(155deg,rgba(14,23,20,.90) 0%,rgba(14,23,20,.78) 45%,rgba(7,113,78,.62) 100%);
}
.page-hero__inner{position:relative;padding:78px 0 66px;max-width:900px}
.page-hero h1{font-size:42px;line-height:1.25;color:#fff;margin-bottom:18px}
.page-hero .hero-sub{font-size:17.5px;line-height:1.95;color:#C9DBD4;max-width:760px;margin-bottom:26px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:14px;
  border-top:1px solid rgba(255,255,255,.14);padding-top:22px;
}
.hero-fact{min-width:170px;flex:1 1 170px}
.hero-fact .k{font-size:13px;color:var(--d2);letter-spacing:.06em}
.hero-fact .v{font-size:22px;font-weight:700;color:#fff;line-height:1.5}

/* ---------- 锚点导航 ---------- */
.anchor-bar{
  position:sticky;top:68px;z-index:40;
  background:rgba(255,255,255,.97);border-bottom:1px solid var(--c-line);
  backdrop-filter:saturate(150%) blur(8px);
}
.anchor-bar ul{display:flex;gap:6px;overflow-x:auto;padding:10px 0;scrollbar-width:none}
.anchor-bar ul::-webkit-scrollbar{display:none}
.anchor-bar a{
  display:inline-block;padding:8px 15px;border-radius:999px;
  font-size:14.5px;color:var(--t2);white-space:nowrap;border:1px solid transparent;
}
.anchor-bar a:hover{background:var(--c-brand-soft);color:var(--c-brand-deep);border-color:#CDEBDF}

/* ---------- 权益要点（横向条列表） ---------- */
.point-list{display:grid;gap:16px}
.point{
  display:grid;grid-template-columns:56px 1fr auto;gap:20px;align-items:center;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:22px 24px;box-shadow:var(--shadow-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
}
.point:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:#CDEBDF}
.point__ico{
  width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;
  background:var(--c-brand-soft);color:var(--c-brand-deep);font-size:20px;font-weight:700;
}
.point h3{font-size:19px;margin-bottom:6px}
.point p{font-size:15.5px;line-height:1.85;color:var(--t2);margin:0}
.point__meta{font-size:13.5px;color:var(--t3);white-space:nowrap;text-align:right}
.point__meta strong{display:block;font-size:20px;color:var(--c-brand-deep);font-weight:700}

/* ---------- 阶梯等级卡 ---------- */
.tier-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:start}
.tier{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px 22px 24px;box-shadow:var(--shadow-1);
  transition:transform var(--tr),box-shadow var(--tr),border-color var(--tr);
  overflow:hidden;
}
.tier::before{content:"";position:absolute;left:0;right:0;top:0;height:6px;background:var(--tier-color)}
.tier--1{--tier-color:var(--c-brand-soft);padding-top:34px}
.tier--2{--tier-color:var(--c-cyan);padding-top:42px}
.tier--3{--tier-color:var(--c-accent);padding-top:50px;border:2px solid var(--c-brand);background:linear-gradient(180deg,#F4FBF7,#FFFFFF)}
.tier--4{--tier-color:var(--c-ink);padding-top:58px;background:var(--c-ink);border-color:var(--c-ink);color:var(--d1)}
.tier:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.tier__ribbon{
  position:absolute;top:14px;right:14px;
  background:var(--c-accent);color:#fff;font-size:12px;font-weight:700;
  border-radius:999px;padding:3px 10px;
}
.tier h3{font-size:21px;margin-bottom:6px}
.tier .tier__desc{font-size:14px;color:var(--t2);margin-bottom:16px;line-height:1.8}
.tier--3 .tier__desc{color:var(--c-brand-deep)}
.tier--4 .tier__desc{color:var(--d2)}
.tier .tier__price{font-size:15px;font-weight:700;color:var(--c-accent);margin-bottom:16px}
.tier--4 .tier__price{color:#FFB48F}
.tier ul{display:grid;gap:9px;border-top:1px dashed var(--c-line);padding-top:16px}
.tier--4 ul{border-top-color:rgba(255,255,255,.16)}
.tier li{position:relative;padding-left:20px;font-size:14.5px;line-height:1.8;color:var(--t2)}
.tier--4 li{color:var(--d2)}
.tier li::before{
  content:"";position:absolute;left:0;top:11px;width:8px;height:8px;border-radius:50%;
  background:var(--tier-color);border:2px solid #fff;box-shadow:0 0 0 1px var(--c-line);
}
.tier--4 li::before{box-shadow:0 0 0 1px rgba(255,255,255,.3);border-color:var(--c-ink)}
.tier__foot{margin-top:20px}

/* ---------- 权益矩阵 ---------- */
.matrix-wrap{
  border:1px solid var(--c-line);border-radius:var(--r-table);
  background:var(--c-surface);box-shadow:var(--shadow-1);overflow:hidden;
}
.matrix{min-width:880px}
.matrix th,.matrix td{padding:16px 18px;text-align:left;font-size:15px;border-bottom:1px solid var(--c-line)}
.matrix thead th{
  position:sticky;top:0;background:#F4F8F6;font-size:14px;color:var(--t2);
  font-weight:600;letter-spacing:.02em;
}
.matrix thead th:first-child{width:26%}
.matrix tbody tr:hover{background:var(--c-brand-soft)}
.matrix tbody tr:last-child td{border-bottom:0}
.matrix .row-name{font-weight:600;color:var(--t1)}
.matrix .col-rec{background:rgba(230,246,239,.55);border-left:2px solid var(--c-brand);border-right:2px solid var(--c-brand)}
.matrix thead .col-rec{background:#DDF3E9;border-top:2px solid var(--c-brand);position:relative}
.matrix thead .col-rec::before{
  content:"推荐";position:absolute;top:-1px;left:50%;transform:translate(-50%,-100%);
  background:var(--c-accent);color:#fff;font-size:12px;font-weight:700;
  border-radius:999px;padding:2px 10px;
}
.mk{display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:50%;font-size:13px;font-weight:700}
.mk--yes{background:var(--c-brand-soft);color:var(--c-brand-deep)}
.mk--no{background:#F1F3F2;color:var(--t3)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.matrix-scroll{overflow-x:auto}
.matrix-mobile{display:none;gap:16px}
.tier-card-m{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:20px;box-shadow:var(--shadow-1);
}
.tier-card-m h4{font-size:17px;margin-bottom:12px;display:flex;align-items:center;justify-content:space-between}
.tier-card-m ul{display:grid;gap:8px}
.tier-card-m li{display:flex;gap:8px;font-size:14.5px;color:var(--t2);line-height:1.7}
.tier-card-m li span.mk{flex:0 0 22px;margin-top:4px}

/* ---------- 升级路径三步 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;counter-reset:step}
.step{
  position:relative;background:var(--c-surface);border:1px solid var(--c-line);
  border-radius:var(--r-card);padding:26px 22px;box-shadow:var(--shadow-1);
}
.step::after{
  content:"";position:absolute;top:46px;right:-13px;width:26px;height:2px;
  background:repeating-linear-gradient(90deg,var(--c-line) 0 6px,transparent 6px 12px);
}
.step:last-child::after{display:none}
.step__num{
  width:44px;height:44px;border-radius:13px;background:var(--c-ink);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;
  margin-bottom:16px;
}
.step:nth-child(2) .step__num{background:var(--c-brand-deep)}
.step:nth-child(3) .step__num{background:var(--c-accent)}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:15px;line-height:1.85;color:var(--t2);margin:0}
.step .step__note{display:block;margin-top:12px;font-size:13.5px;color:var(--t3)}

/* ---------- 场景图文 ---------- */
.scene{display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}
.scene__media{position:relative;border-radius:var(--r-img);overflow:hidden;box-shadow:var(--shadow-1)}
.scene__media img{width:100%;aspect-ratio:3/2;object-fit:cover;border-radius:var(--r-img)}
.scene__media figcaption{
  font-size:13px;color:var(--t3);text-align:center;padding:12px 10px 0;
}
.scene-list{display:grid;gap:14px;margin-top:22px}
.scene-list li{
  display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:12px;padding:16px 18px;
}
.scene-list .dot{
  width:28px;height:28px;border-radius:9px;background:var(--c-brand-soft);color:var(--c-brand-deep);
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;margin-top:2px;
}
.scene-list strong{display:block;font-size:16px;margin-bottom:4px}
.scene-list span{font-size:14.5px;color:var(--t2);line-height:1.8}

/* ---------- FAQ ---------- */
.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;transition:border-color var(--tr),background-color var(--tr);
}
.faq-item[open]{background:#FBFDFC;border-color:#CDEBDF;box-shadow:var(--shadow-1)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 24px;font-size:17px;font-weight:600;line-height:1.6;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";width:9px;height:9px;flex:0 0 9px;
  border-right:2px solid var(--t2);border-bottom:2px solid var(--t2);
  transform:rotate(45deg);transition:transform var(--tr);
}
.faq-item[open] summary::after{transform:rotate(225deg);border-color:var(--c-brand)}
.faq-answer{
  padding:0 24px 22px 27px;border-left:3px solid var(--c-brand);
  font-size:15.5px;line-height:1.9;color:var(--t2);
}
.faq-answer p{margin-bottom:12px}

/* ---------- CTA 通栏 ---------- */
.cta-band{
  position:relative;overflow:hidden;background-color:var(--c-ink);color:var(--d1);
  border-radius:0;
}
.cta-band__bg{
  position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.webp");
  background-size:cover;background-position:center;
}
.cta-band__bg::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(14,23,20,.94) 0%,rgba(7,113,78,.80) 58%,rgba(31,200,184,.42) 100%);
}
.cta-band__inner{
  position:relative;display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:62px 0;
}
.cta-band h2{font-size:30px;color:#fff;margin-bottom:12px}
.cta-band p{font-size:16px;color:#C9DBD4;max-width:600px;margin:0}
.cta-actions{display:flex;gap:12px;flex-shrink:0;flex-wrap:wrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-ink);color:var(--d2);padding:64px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:32px}
.footer-brand .logo__main{color:#fff}
.footer-brand .logo__sub{color:var(--d2)}
.footer-brand p{font-size:14px;line-height:1.9;color:var(--d2);margin-top:16px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:14px;letter-spacing:.03em}
.footer-col ul{display:grid;gap:9px}
.footer-col a{font-size:14px;color:var(--d2)}
.footer-col a:hover{color:#fff}
.contact-line{font-size:14px;color:var(--d2);line-height:1.8}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#8AA39B;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;right:24px;bottom:24px;width:44px;height:44px;border-radius:50%;
  background:var(--c-brand);color:#fff;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 26px -12px rgba(14,159,110,.9);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--tr),transform var(--tr),visibility var(--tr),background-color var(--tr);
  z-index:50;
}
.to-top.is-show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:var(--c-brand-deep)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{padding:0 28px}
  .mega-panel{width:700px}
  .page-hero h1{font-size:38px}
}
@media (max-width:1023px){
  .nav-main{display:none}
  .nav-toggle{display:flex}
  .mega-wrap{display:none}
  .section{padding:64px 0}
  .tier-grid{grid-template-columns:repeat(2,1fr)}
  .tier--3,.tier--4{padding-top:42px}
  .scene{grid-template-columns:1fr;gap:28px}
  .steps{grid-template-columns:1fr;gap:16px}
  .step::after{display:none}
  .cta-band__inner{flex-direction:column;align-items:flex-start;padding:52px 0}
  .matrix-scroll{display:none}
  .matrix-mobile{display:grid}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .anchor-bar{top:60px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.85}
  .container{padding:0 16px}
  .nav-bar{height:60px;gap:14px}
  .page-hero{margin-top:14px}
  .page-hero__inner{padding:52px 0 44px}
  .page-hero h1{font-size:28px}
  .page-hero .hero-sub{font-size:16px}
  .sec-head h2{font-size:22px}
  .section{padding:48px 0}
  .point{grid-template-columns:44px 1fr;gap:14px;padding:18px}
  .point__ico{width:44px;height:44px;border-radius:12px;font-size:17px}
  .point__meta{grid-column:1/-1;text-align:left;border-top:1px dashed var(--c-line);padding-top:10px}
  .point__meta strong{display:inline;margin-right:6px}
  .tier-grid{grid-template-columns:1fr}
  .tier--3,.tier--4{padding-top:34px}
  .cta-band h2{font-size:22px}
  .faq-item summary{padding:16px 18px;font-size:16px}
  .faq-answer{padding:0 18px 18px 22px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{font-size:12.5px}
  .to-top{right:16px;bottom:16px}
}
@media (max-width:480px){
  .hero-facts{flex-direction:column;gap:12px}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .logo__main{font-size:16px}
  .mega-panel{width:auto}
}