/* roulang page: index */
:root{
  --brand-900:#0E3B36;
  --brand-700:#14574E;
  --brand-600:#1B6A5E;
  --brand-100:#E4EFEA;
  --accent-500:#D98324;
  --ink-900:#17211F;
  --ink-700:#33403D;
  --ink-500:#6B7A76;
  --paper:#FAF8F4;
  --surface:#FFFFFF;
  --line:#E6E2D9;
  --chip-bg:#F1EDE6;
  --shadow-s:0 1px 2px rgba(23,33,31,.06);
  --shadow-m:0 10px 30px -12px rgba(20,50,45,.18);
  --r-card:16px;
  --r-img:20px;
  --r-btn:12px;
  --r-pill:999px;
  --sect:96px;
  --bs-primary:#1B6A5E;
  --bs-body-bg:#FAF8F4;
  --bs-body-color:#33403D;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:visited{color:var(--brand-600)}
a:hover{color:var(--brand-700);text-decoration:underline}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,3.4vw,44px);line-height:1.25}
h2{font-size:clamp(24px,2.4vw,32px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
p{margin:0 0 1.2em}
p:last-child{margin-bottom:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:4px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.container-wide{width:100%;max-width:1320px;margin:0 auto;padding:0 24px}
.reading{max-width:760px}
.section{padding:var(--sect) 0}
.section-tight{padding:72px 0}
.section-head{margin-bottom:32px}
.section-head .eyebrow-line{display:block;font-size:12px;letter-spacing:.16em;color:var(--brand-600);text-transform:uppercase;margin-bottom:12px;font-weight:600}
.section-head h2{margin-bottom:12px}
.section-head p{color:var(--ink-500);font-size:16px;max-width:720px;margin:0}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(250,248,244,.92);
  backdrop-filter:saturate(140%) blur(8px);
  border-bottom:1px solid transparent;
  transition:box-shadow .25s ease,border-color .25s ease,background .25s ease;
}
.site-header.is-scrolled{
  background:rgba(255,255,255,.92);
  border-bottom-color:var(--line);
  box-shadow:var(--shadow-s);
}
.nav-inner{
  display:flex;align-items:center;gap:20px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
.brand:hover{text-decoration:none}
.brand-mark{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:3px;width:28px;height:28px}
.brand-mark i{display:block;border-radius:3px;background:var(--brand-600)}
.brand-mark i:nth-child(2){background:var(--brand-700)}
.brand-mark i:nth-child(3){background:var(--brand-700)}
.brand-mark i:nth-child(4){background:var(--accent-500)}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:-.01em}
.nav-tabs-wrap{
  flex:1 1 auto;display:flex;justify-content:center;min-width:0;
}
.nav-chips{
  display:flex;align-items:center;gap:4px;
  background:var(--chip-bg);
  border-radius:var(--r-pill);
  padding:5px;
  max-width:100%;
  overflow-x:auto;
  scrollbar-width:none;
  scroll-snap-type:x proximity;
}
.nav-chips::-webkit-scrollbar{display:none}
.nav-chip{
  flex:0 0 auto;
  scroll-snap-align:center;
  padding:8px 16px;
  border-radius:var(--r-pill);
  font-size:14.5px;
  font-weight:500;
  color:var(--ink-700);
  white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease;
}
.nav-chip:hover{color:var(--brand-600);text-decoration:none}
.nav-chip.active{
  background:var(--surface);
  color:var(--brand-600);
  font-weight:600;
  box-shadow:var(--shadow-s);
}
.nav-right{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.nav-link-quiet{font-size:14.5px;color:var(--ink-500);font-weight:500}
.nav-link-quiet:hover{color:var(--brand-600);text-decoration:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:var(--surface);border-radius:var(--r-btn);cursor:pointer;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--surface);z-index:1100;
  transform:translateX(102%);
  transition:transform .28s ease;
  box-shadow:-16px 0 40px -20px rgba(20,50,45,.28);
  padding:20px;display:flex;flex-direction:column;gap:6px;
  overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--surface);font-size:18px;color:var(--ink-700);cursor:pointer}
.drawer a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  border-radius:var(--r-btn);font-size:16px;color:var(--ink-700);font-weight:500;
}
.drawer a:hover,.drawer a.active{background:var(--brand-100);color:var(--brand-600);text-decoration:none}
.drawer .drawer-cta{margin-top:12px;justify-content:center;background:var(--brand-600);color:#FBF7EF;font-weight:600}
.drawer .drawer-cta:hover{background:var(--brand-700);color:#FBF7EF}
.scrim{position:fixed;inset:0;background:rgba(14,59,54,.36);z-index:1050;opacity:0;pointer-events:none;transition:opacity .25s ease}
.scrim.open{opacity:1;pointer-events:auto}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 24px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;text-decoration:none;
  transition:transform .18s ease,box-shadow .2s ease,background .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-m)}
.btn:active{transform:translateY(0);box-shadow:var(--shadow-s)}
.btn-primary{background:var(--brand-600);color:#FBF7EF}
.btn-primary:visited{color:#FBF7EF}
.btn-primary:hover{background:var(--brand-700);color:#FBF7EF}
.btn-ghost{background:transparent;color:var(--brand-600);border-color:var(--brand-600)}
.btn-ghost:visited{color:var(--brand-600)}
.btn-ghost:hover{background:var(--brand-100);color:var(--brand-700)}
.btn-invert{background:#FBF7EF;color:var(--brand-900)}
.btn-invert:visited{color:var(--brand-900)}
.btn-invert:hover{background:#fff;color:var(--brand-900)}
.btn-sm{min-height:42px;padding:0 18px;font-size:14.5px}
.btn-block{width:100%}
.textlink{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--brand-600);
}
.textlink .arrow{display:inline-block;transition:transform .2s ease}
.textlink:hover{text-decoration:none;color:var(--brand-700)}
.textlink:hover .arrow{transform:translateX(3px)}

/* ---------- chip / 标签 ---------- */
.chip{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-600);
  font-size:12px;letter-spacing:.08em;font-weight:600;line-height:1.6;
}
.chip-accent{background:rgba(217,131,36,.12);color:#9A5C14}
.chip-soft{background:var(--chip-bg);color:var(--ink-700)}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;padding:72px 0 88px;background:var(--paper)}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(104deg,rgba(27,106,94,.09) 0%,rgba(27,106,94,0) 48%,rgba(217,131,36,.07) 100%);
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-160px;width:520px;height:520px;
  border-radius:50%;background:rgba(27,106,94,.05);pointer-events:none;
}
.hero-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--line);
  padding:7px 14px;border-radius:var(--r-pill);
  font-size:12.5px;letter-spacing:.06em;color:var(--brand-700);font-weight:600;
  box-shadow:var(--shadow-s);margin-bottom:20px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
.hero h1{margin-bottom:18px}
.hero-sub{font-size:17.5px;line-height:1.75;color:var(--ink-700);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:30px}
.hero-points{display:flex;flex-direction:column;gap:10px}
.hero-points li{display:flex;align-items:flex-start;gap:10px;font-size:15px;color:var(--ink-700)}
.tick{
  flex:0 0 auto;width:20px;height:20px;margin-top:3px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;
}
.hero-visual{position:relative}
.hero-visual img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--r-img);border:1px solid var(--line);box-shadow:var(--shadow-m);
}
.float-card{
  position:absolute;left:-18px;bottom:-26px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:16px 20px;box-shadow:var(--shadow-m);min-width:210px;
}
.float-card .num{font-size:26px;font-weight:700;color:var(--brand-600);line-height:1.2}
.float-card .num small{font-size:13px;font-weight:600;color:var(--ink-500);margin-left:4px}
.float-card .cap{font-size:13px;color:var(--ink-500);margin-top:4px}

/* ---------- 指标条 ---------- */
.metrics-bar{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:40px 0}
.metrics-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric{position:relative;padding-left:20px}
.metric::before{content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;background:var(--brand-100)}
.metric .val{font-size:clamp(26px,2.6vw,34px);font-weight:700;color:var(--brand-600);line-height:1.2;letter-spacing:-.02em}
.metric .val small{font-size:14px;font-weight:600;color:var(--ink-500);margin-left:4px}
.metric .label{font-size:14.5px;color:var(--ink-700);margin-top:6px}

/* ---------- 功能分组 组一 ---------- */
.feature-split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.feature-split .media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  border:1px solid var(--line);box-shadow:var(--shadow-s);
}
.feature-list{margin:22px 0 26px;display:flex;flex-direction:column;gap:14px}
.feature-list li{display:flex;gap:12px;font-size:15.5px}
.feature-list .idx{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;background:var(--brand-100);
  color:var(--brand-700);font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;margin-top:2px;
}
.feature-list b{color:var(--ink-900);font-weight:600}

/* ---------- 功能分组 组二：非对称卡组 ---------- */
.asym-grid{display:grid;grid-template-columns:1.25fr 1.25fr 1fr;gap:24px;align-items:stretch}
.card-base{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-s);overflow:hidden;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card-base:hover{transform:translateY(-4px);border-color:rgba(27,106,94,.32);box-shadow:var(--shadow-m)}
.asym-card{display:flex;flex-direction:column;height:100%}
.asym-card .thumb{aspect-ratio:16/10;overflow:hidden}
.asym-card .thumb img{width:100%;height:100%;object-fit:cover}
.asym-card .body{padding:22px}
.asym-card h3{margin:12px 0 10px}
.asym-card p{font-size:14.8px;color:var(--ink-500);margin:0}
.asym-card.narrow{background:var(--brand-900);border-color:var(--brand-900);color:rgba(255,255,255,.78)}
.asym-card.narrow h3{color:#FBF7EF}
.asym-card.narrow p{color:rgba(255,255,255,.72)}
.asym-card.narrow .chip{background:rgba(255,255,255,.14);color:#E9DFCD}
.asym-card.narrow .mini-list{margin-top:16px;display:flex;flex-direction:column;gap:9px}
.asym-card.narrow .mini-list li{font-size:14.5px;color:rgba(255,255,255,.86);padding-left:16px;position:relative}
.asym-card.narrow .mini-list li::before{content:"";position:absolute;left:0;top:12px;width:6px;height:6px;border-radius:2px;background:var(--accent-500)}

/* ---------- 功能分组 组三：图标竖列 ---------- */
.icon-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px 32px}
.icon-item{display:flex;gap:16px;padding:20px 0;border-top:1px solid var(--line)}
.icon-box{
  flex:0 0 auto;width:44px;height:44px;border-radius:12px;
  background:var(--brand-100);display:grid;grid-template-columns:1fr 1fr;gap:3px;padding:11px;
}
.icon-box i{display:block;border-radius:2px;background:var(--brand-600)}
.icon-box i:nth-child(2){background:rgba(27,106,94,.4)}
.icon-box i:nth-child(3){background:rgba(27,106,94,.4)}
.icon-box i:nth-child(4){background:var(--accent-500)}
.icon-item h3{font-size:17px;margin-bottom:6px}
.icon-item p{font-size:14.5px;color:var(--ink-500);margin:0}

/* ---------- 场景 ---------- */
.scene-wrap{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.scene-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.scene-col{display:flex;flex-direction:column;gap:24px}
.scene-col.offset{margin-top:32px}
.scene-card .thumb{aspect-ratio:16/10;overflow:hidden}
.scene-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.scene-card:hover .thumb img{transform:scale(1.03)}
.scene-card .body{padding:22px}
.scene-card h3{margin-bottom:8px}
.scene-card p{font-size:14.8px;color:var(--ink-500);margin-bottom:14px}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:1.35fr 1fr;gap:24px;align-items:stretch}
.case-main{
  background:var(--brand-900);color:rgba(255,255,255,.78);
  border-radius:var(--r-card);padding:36px;display:flex;flex-direction:column;gap:16px;
  border:1px solid var(--brand-900);
}
.case-main h3{color:#FBF7EF;font-size:24px}
.case-main p{color:rgba(255,255,255,.76);font-size:15px;margin:0}
.case-main .chip{background:rgba(255,255,255,.14);color:#E9DFCD;align-self:flex-start}
.case-nums{display:flex;gap:32px;flex-wrap:wrap;margin-top:auto;padding-top:12px;border-top:1px solid rgba(255,255,255,.16)}
.case-nums div .v{font-size:24px;font-weight:700;color:#FBF7EF;line-height:1.2}
.case-nums div .t{font-size:13px;color:rgba(255,255,255,.62)}
.case-side{display:grid;grid-template-rows:1fr 1fr;gap:24px}
.case-mini{background:var(--brand-100);border:1px solid rgba(27,106,94,.14);border-radius:var(--r-card);padding:24px;transition:transform .22s ease,box-shadow .22s ease}
.case-mini:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.case-mini h3{font-size:18px;margin:12px 0 8px}
.case-mini p{font-size:14.5px;color:var(--ink-700);margin:0}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch}
.price-card{
  position:relative;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:32px 28px;display:flex;flex-direction:column;
  box-shadow:var(--shadow-s);transition:transform .22s ease,box-shadow .22s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m)}
.price-card h3{font-size:19px;margin-bottom:8px}
.price-card .for{font-size:14px;color:var(--ink-500);min-height:44px}
.price-amount{display:flex;align-items:baseline;gap:6px;margin:18px 0 20px}
.price-amount .big{font-size:34px;font-weight:700;color:var(--brand-600);letter-spacing:-.02em;line-height:1.1}
.price-amount .unit{font-size:13.5px;color:var(--ink-500)}
.price-feats{display:flex;flex-direction:column;gap:11px;margin-bottom:26px}
.price-feats li{font-size:14.6px;display:flex;gap:10px;align-items:flex-start}
.price-feats .tick{margin-top:1px;width:18px;height:18px;font-size:11px}
.price-card .btn{margin-top:auto}
.price-card.featured{background:var(--brand-900);border-color:var(--brand-900);color:rgba(255,255,255,.8)}
.price-card.featured h3{color:#FBF7EF}
.price-card.featured .for{color:rgba(255,255,255,.66)}
.price-card.featured .price-amount .big{color:#FBF7EF}
.price-card.featured .price-amount .unit{color:rgba(255,255,255,.6)}
.price-card.featured .price-feats li{color:rgba(255,255,255,.84)}
.price-card.featured .tick{background:rgba(255,255,255,.16);color:#FBF7EF}
.badge-rec{
  position:absolute;top:-13px;left:28px;
  background:var(--accent-500);color:#fff;font-size:12px;font-weight:600;
  letter-spacing:.08em;padding:5px 14px;border-radius:var(--r-pill);
}

/* ---------- 资讯 ---------- */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{display:flex;flex-direction:column;height:100%}
.news-card .thumb{aspect-ratio:16/10;overflow:hidden;background:var(--brand-100)}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.news-card:hover .thumb img{transform:scale(1.04)}
.news-card .body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.news-card h3{
  font-size:17px;line-height:1.55;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.news-card:hover h3{color:var(--brand-600)}
.news-card .excerpt{
  font-size:14.5px;color:var(--ink-500);margin:0;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:6px}
.news-meta time{font-size:13.5px;color:var(--ink-500)}
.news-meta .textlink{font-size:14px}
.empty-state{
  text-align:center;padding:56px 24px;border:1px dashed var(--line);
  border-radius:var(--r-card);background:var(--surface);
}
.empty-state .glyph{
  width:52px;height:52px;margin:0 auto 16px;border-radius:14px;
  background:var(--brand-100);display:grid;grid-template-columns:1fr 1fr;gap:3px;padding:13px;
}
.empty-state .glyph i{display:block;border-radius:2px;background:rgba(27,106,94,.45)}
.empty-state p{color:var(--ink-500);margin-bottom:10px}

/* ---------- FAQ ---------- */
.faq-layout{display:grid;grid-template-columns:.85fr 1.15fr;gap:48px;align-items:start}
.faq-aside p{color:var(--ink-500);font-size:15px;margin-top:14px}
.faq-list{display:flex;flex-direction:column;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(27,106,94,.3);box-shadow:var(--shadow-s)}
.faq-item.open::before{content:"";display:block;height:3px;background:var(--brand-600)}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;text-align:left;font-size:16px;font-weight:600;color:var(--ink-900);
  font-family:inherit;line-height:1.6;
}
.faq-q .caret{
  flex:0 0 auto;width:26px;height:26px;border-radius:50%;
  background:var(--brand-100);color:var(--brand-600);
  display:flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform .25s ease;
}
.faq-item.open .caret{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 22px 20px;font-size:15px;color:var(--ink-700)}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--brand-900);color:rgba(255,255,255,.78);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#FBF7EF;margin-bottom:8px}
.cta-inner p{color:rgba(255,255,255,.72);font-size:15.5px;margin:0}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.7);padding:64px 0 0;font-size:14.6px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:44px}
.footer-brand .brand-text{color:#FBF7EF}
.footer-brand p{margin:16px 0 0;color:rgba(255,255,255,.66);font-size:14.2px;line-height:1.8}
.footer-contact{margin-top:18px;display:flex;flex-direction:column;gap:6px;font-size:14px;color:rgba(255,255,255,.72)}
.site-footer h4{color:#FBF7EF;font-size:15px;font-weight:600;margin-bottom:16px;letter-spacing:.02em}
.footer-links{display:flex;flex-direction:column;gap:11px}
.footer-links a{color:rgba(255,255,255,.7);font-size:14.4px}
.footer-links a:hover{color:#FBF7EF;text-decoration:none}
.subscribe-form{display:flex;gap:10px;margin-top:14px}
.subscribe-form input{
  flex:1 1 auto;height:44px;border-radius:var(--r-btn);
  border:1px solid rgba(255,255,255,.22);background:rgba(255,255,255,.08);
  color:#FBF7EF;padding:0 14px;font-size:14.5px;font-family:inherit;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.45)}
.subscribe-form input:focus{outline:none;border-color:var(--accent-500);background:rgba(255,255,255,.14)}
.footer-note{font-size:13px;color:rgba(255,255,255,.5);margin-top:10px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.14);
  padding:20px 0;display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13.4px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.6)}
.footer-bottom a:hover{color:#FBF7EF;text-decoration:none}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  :root{--sect:80px}
  .hero-grid{gap:40px}
  .asym-grid{grid-template-columns:1fr 1fr}
  .asym-card.narrow{grid-column:span 2}
}
@media (max-width:1024px){
  .nav-tabs-wrap{display:none}
  .nav-right .nav-link-quiet{display:none}
  .nav-toggle{display:flex}
  .nav-inner{height:64px}
  .metrics-grid{grid-template-columns:repeat(2,1fr);gap:28px}
  .icon-grid{grid-template-columns:repeat(2,1fr)}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .price-grid{grid-template-columns:1fr;max-width:560px;margin:0 auto}
  .faq-layout{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:767.98px){
  :root{--sect:56px}
  .container,.container-wide{padding:0 18px}
  .hero{padding:44px 0 72px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-actions{flex-direction:column;gap:12px}
  .hero-actions .btn{width:100%}
  .float-card{left:12px;bottom:-20px}
  .metrics-grid{grid-template-columns:1fr;gap:22px}
  .feature-split{grid-template-columns:1fr;gap:32px}
  .asym-grid{grid-template-columns:1fr}
  .asym-card.narrow{grid-column:auto}
  .icon-grid{grid-template-columns:1fr}
  .scene-col.offset{margin-top:0}
  .case-grid{grid-template-columns:1fr}
  .case-side{grid-template-rows:auto auto}
  .news-grid{grid-template-columns:1fr}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:520px){
  h1{font-size:27px}
  h2{font-size:22px}
  .hero-sub{font-size:16px}
  .case-main{padding:26px}
  .price-card{padding:26px 22px}
}

/* roulang page: article */
:root{
  --brand-900:#0E3B36;
  --brand-700:#14574E;
  --brand-600:#1B6A5E;
  --brand-100:#E4EFEA;
  --accent-500:#D98324;
  --ink-900:#17211F;
  --ink-700:#33403D;
  --ink-500:#6B7A76;
  --paper:#FAF8F4;
  --surface:#FFFFFF;
  --line:#E6E2D9;
  --chip-bg:#F1EDE6;
  --shadow-s:0 1px 2px rgba(23,33,31,.06);
  --shadow-m:0 10px 30px -12px rgba(20,50,45,.18);
  --r-card:16px;
  --r-lg:20px;
  --r-btn:12px;
  --r-pill:999px;
  --shell:1200px;
  --shell-wide:1320px;
  --read:760px;
  --bs-primary:var(--brand-600);
  --bs-body-bg:var(--paper);
  --bs-body-color:var(--ink-700);
  --bs-border-radius:var(--r-btn);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
body.no-scroll{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;text-underline-offset:3px;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:-.01em;line-height:1.3;}
p{margin:0;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}

.container,.container-wide{width:100%;margin:0 auto;padding-left:24px;padding-right:24px;}
.container{max-width:var(--shell);}
.container-wide{max-width:var(--shell-wide);}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease,box-shadow .2s ease;
  cursor:pointer;text-decoration:none;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-600);color:#F7F5EF;box-shadow:var(--shadow-s);}
.btn-primary:hover{background:var(--brand-700);color:#FFFFFF;transform:translateY(-1px);box-shadow:var(--shadow-m);}
.btn-primary:active{transform:translateY(0);box-shadow:var(--shadow-s);}
.btn-outline{background:transparent;color:var(--brand-600);border-color:rgba(27,106,94,.45);}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);border-color:var(--brand-600);}
.btn-light{background:#F7F5EF;color:var(--brand-900);border-color:transparent;}
.btn-light:hover{background:#FFFFFF;color:var(--brand-900);transform:translateY(-1px);box-shadow:var(--shadow-m);}
.btn-sm{min-height:40px;padding:8px 18px;font-size:14px;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:14px;color:var(--brand-600);}
.link-arrow span{transition:transform .2s ease;}
.link-arrow:hover span{transform:translateX(3px);}

/* header */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(250,248,244,.94);
  backdrop-filter:saturate(140%) blur(6px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-s);background:rgba(255,255,255,.92);}
.nav-inner{height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);}
.brand:hover{text-decoration:none;color:var(--ink-900);}
.brand-mark{display:grid;grid-template-columns:repeat(2,9px);grid-template-rows:repeat(2,9px);gap:3px;}
.brand-mark i{display:block;border-radius:3px;background:var(--brand-600);}
.brand-mark i:nth-child(2){background:var(--brand-700);}
.brand-mark i:nth-child(3){background:var(--brand-700);}
.brand-mark i:nth-child(4){background:var(--accent-500);}
.brand-text{font-size:19px;font-weight:700;letter-spacing:-.01em;}
.nav-tabs-wrap{flex:1;display:flex;justify-content:center;}
.nav-chips{display:flex;gap:4px;background:var(--chip-bg);border-radius:var(--r-pill);padding:5px;}
.nav-chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);
  font-size:14px;font-weight:600;color:var(--ink-700);white-space:nowrap;transition:all .2s ease;
}
.nav-chip:hover{color:var(--brand-600);text-decoration:none;background:rgba(255,255,255,.6);}
.nav-chip.active{background:var(--surface);color:var(--brand-600);box-shadow:var(--shadow-s);}
.nav-right{display:flex;align-items:center;gap:14px;}
.nav-link-quiet{font-size:14px;font-weight:600;color:var(--ink-700);}
.nav-link-quiet:hover{color:var(--brand-600);text-decoration:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:var(--r-btn);
  background:var(--surface);flex-direction:column;align-items:center;justify-content:center;gap:5px;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-700);border-radius:2px;}
.nav-drawer{
  position:fixed;top:0;right:0;width:300px;max-width:86vw;height:100%;
  background:var(--surface);border-left:1px solid var(--line);box-shadow:var(--shadow-m);
  transform:translateX(102%);transition:transform .28s ease;z-index:1050;
  display:flex;flex-direction:column;gap:18px;padding:20px;
}
.nav-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{width:40px;height:40px;border:1px solid var(--line);border-radius:var(--r-btn);background:var(--paper);font-size:20px;line-height:1;color:var(--ink-700);cursor:pointer;}
.drawer-links{display:flex;flex-direction:column;}
.drawer-links a{
  display:flex;align-items:center;min-height:48px;padding:0 6px;font-size:15px;font-weight:600;
  color:var(--ink-900);border-bottom:1px solid var(--line);
}
.drawer-links a:hover{color:var(--brand-600);text-decoration:none;}

/* hero */
.article-hero{
  position:relative;color:#F5F2EB;
  background-color:var(--brand-900);
  background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  padding:44px 0 56px;
}
.article-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(105deg,rgba(14,59,54,.95) 0%,rgba(14,59,54,.88) 52%,rgba(20,87,78,.74) 100%);
}
.article-hero .container{position:relative;z-index:1;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(245,242,235,.72);}
.breadcrumb a{color:rgba(245,242,235,.82);}
.breadcrumb a:hover{color:#FFFFFF;}
.breadcrumb .sep{opacity:.55;}
.breadcrumb .now{color:#FFFFFF;font-weight:600;}
.article-title{
  margin-top:18px;color:#FFFFFF;
  font-size:clamp(27px,3.4vw,40px);line-height:1.28;letter-spacing:-.01em;max-width:20em;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:22px;}
.meta-chip{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:rgba(245,242,235,.16);color:#FFFFFF;font-size:13px;font-weight:600;letter-spacing:.04em;
}
.meta-item{font-size:13.5px;color:rgba(245,242,235,.78);}
.meta-dot{width:4px;height:4px;border-radius:50%;background:rgba(245,242,235,.45);}

/* layout */
.section{padding:72px 0;}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:start;}
.article-main{min-width:0;}
.article-body{
  max-width:var(--read);
  font-size:16px;line-height:1.85;color:var(--ink-700);
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:40px 44px;box-shadow:var(--shadow-s);
}
.article-body>*+*{margin-top:1.2em;}
.article-body p{margin:0;}
.article-body h2{font-size:26px;margin-top:1.7em;padding-top:.2em;line-height:1.35;scroll-margin-top:100px;}
.article-body h3{font-size:20px;margin-top:1.5em;line-height:1.4;scroll-margin-top:100px;}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0;}
.article-body ul,.article-body ol{padding-left:1.4em;margin:1.2em 0;}
.article-body li+li{margin-top:.4em;}
.article-body blockquote{
  margin:1.4em 0;padding:16px 20px;border-left:3px solid var(--brand-600);
  background:var(--brand-100);border-radius:0 var(--r-btn) var(--r-btn) 0;color:var(--brand-900);
}
.article-body blockquote p{margin:0;}
.article-body img{border-radius:var(--r-card);margin:1.6em auto;box-shadow:var(--shadow-s);height:auto;}
.article-body figure{margin:1.6em 0;}
.article-body figcaption{font-size:13.5px;color:var(--ink-500);text-align:center;margin-top:10px;}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:1.5em 0;border:1px solid var(--line);border-radius:var(--r-btn);overflow:hidden;}
.article-body th{background:var(--brand-100);color:var(--brand-900);text-align:left;font-weight:700;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);}
.article-body tr:last-child td{border-bottom:none;}
.article-body code{background:var(--chip-bg);padding:2px 6px;border-radius:6px;font-size:.92em;color:var(--brand-700);}
.article-body pre{background:#0E3B36;color:#EFEDE6;padding:18px 20px;border-radius:var(--r-btn);overflow-x:auto;font-size:14px;line-height:1.7;}
.article-body pre code{background:transparent;color:inherit;padding:0;}
.article-body hr{border:none;border-top:1px solid var(--line);margin:2em 0;}

/* aside */
.article-aside{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.toc{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--shadow-s);}
.toc-title{font-size:12px;letter-spacing:.08em;font-weight:700;color:var(--ink-500);text-transform:uppercase;}
.toc-list{list-style:none;margin:14px 0 0;padding:0;display:flex;flex-direction:column;gap:2px;max-height:52vh;overflow:auto;}
.toc-item a{display:block;padding:7px 10px;border-radius:8px;font-size:14px;color:var(--ink-700);line-height:1.5;border-left:3px solid transparent;}
.toc-item a:hover{background:var(--brand-100);color:var(--brand-700);text-decoration:none;}
.toc-item a.is-current{color:var(--brand-600);font-weight:700;border-left-color:var(--brand-600);background:var(--brand-100);}
.toc-h3 a{padding-left:22px;font-size:13.5px;}
.aside-card{background:var(--brand-900);color:rgba(245,242,235,.82);border-radius:var(--r-card);padding:22px;}
.aside-card h3{color:#FFFFFF;font-size:17px;margin-bottom:10px;}
.aside-card p{font-size:14px;line-height:1.75;margin-bottom:16px;}

/* empty */
.empty-state{
  max-width:var(--read);background:var(--surface);border:1px dashed var(--line);border-radius:var(--r-card);
  padding:56px 32px;text-align:center;box-shadow:var(--shadow-s);
}
.empty-state .empty-mark{
  width:56px;height:56px;margin:0 auto 18px;border-radius:var(--r-card);
  background:var(--brand-100);display:flex;align-items:center;justify-content:center;
  color:var(--brand-600);font-size:24px;font-weight:700;
}
.empty-state .empty-title{font-size:20px;font-weight:700;color:var(--ink-900);margin-bottom:10px;}
.empty-state p.lead{font-size:15px;color:var(--ink-500);margin-bottom:22px;}

/* tags */
.tag-row{max-width:var(--read);display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:28px;}
.tag-label{font-size:12px;letter-spacing:.08em;color:var(--ink-500);font-weight:700;}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--brand-100);color:var(--brand-700);font-size:13px;font-weight:600;
  transition:background-color .2s ease,color .2s ease;
}
.tag:hover{background:var(--brand-600);color:#FFFFFF;text-decoration:none;}

/* post nav */
.post-nav{max-width:var(--read);display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:32px;}
.post-nav-card{
  display:flex;flex-direction:column;gap:6px;padding:20px;border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);box-shadow:var(--shadow-s);transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.post-nav-card:hover{transform:translateY(-4px);border-color:rgba(27,106,94,.35);box-shadow:var(--shadow-m);text-decoration:none;}
.post-nav-card span{font-size:12px;letter-spacing:.08em;color:var(--ink-500);font-weight:700;}
.post-nav-card strong{font-size:15.5px;color:var(--ink-900);line-height:1.5;}
.post-nav-card:hover strong{color:var(--brand-600);}

/* related */
.related-section{padding:24px 0 88px;}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px;}
.section-head h2{font-size:clamp(22px,2.4vw,30px);}
.section-head p{font-size:15px;color:var(--ink-500);max-width:46em;margin-top:10px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-s);
  transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
}
.post-card:hover{transform:translateY(-4px);border-color:rgba(27,106,94,.35);box-shadow:var(--shadow-m);}
.post-card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--chip-bg);}
.post-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease;}
.post-card:hover .post-card-media img{transform:scale(1.04);}
.post-card-media .chip{
  position:absolute;left:14px;top:14px;height:28px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);color:var(--brand-700);font-size:12px;font-weight:700;
  display:inline-flex;align-items:center;letter-spacing:.04em;
}
.post-card-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card-body h3{font-size:17px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.post-card-body p{font-size:14px;color:var(--ink-500);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.post-card-foot{display:flex;align-items:center;justify-content:space-between;margin-top:auto;padding-top:12px;border-top:1px solid var(--line);}
.post-card-foot span{font-size:13px;color:var(--ink-500);}
.back-row{margin-top:32px;}
.back-row a{font-size:14px;font-weight:600;}

/* cta band */
.cta-band{background:var(--brand-900);color:rgba(245,242,235,.82);padding:56px 0;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;}
.cta-inner h2{color:#FFFFFF;font-size:clamp(20px,2.3vw,28px);margin-bottom:8px;}
.cta-inner p{font-size:15px;max-width:44em;}

/* footer */
.site-footer{background:var(--brand-900);color:rgba(245,242,235,.72);padding:64px 0 24px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.4fr;gap:36px;}
.site-footer .brand{color:#FFFFFF;}
.site-footer .brand:hover{color:#FFFFFF;}
.site-footer .brand-text{color:#FFFFFF;}
.footer-brand p{margin-top:16px;line-height:1.8;max-width:34em;}
.footer-contact{display:flex;flex-direction:column;gap:6px;margin-top:16px;font-size:13.5px;color:rgba(245,242,235,.62);}
.site-footer h4{color:#FFFFFF;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-links{display:flex;flex-direction:column;gap:10px;}
.footer-links a{color:rgba(245,242,235,.72);font-size:14px;}
.footer-links a:hover{color:#FFFFFF;text-decoration:none;}
.subscribe-form{display:flex;gap:10px;margin-top:14px;}
.subscribe-form input{
  flex:1;min-width:0;height:44px;padding:0 14px;border-radius:var(--r-btn);
  border:1px solid rgba(245,242,235,.24);background:rgba(255,255,255,.06);color:#FFFFFF;font-size:14px;
}
.subscribe-form input::placeholder{color:rgba(245,242,235,.5);}
.subscribe-form input:focus{outline:none;border-color:var(--accent-500);background:rgba(255,255,255,.12);}
.footer-note{font-size:13px;color:rgba(245,242,235,.55);margin-top:12px;line-height:1.7;}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;align-items:center;
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(245,242,235,.14);
  font-size:13px;color:rgba(245,242,235,.6);
}
.footer-bottom a{color:rgba(245,242,235,.72);}
.footer-bottom a:hover{color:#FFFFFF;}

@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:32px;}
  .article-aside{position:static;flex-direction:row;display:none;}
}
@media (max-width:991.98px){
  .nav-tabs-wrap{justify-content:flex-start;overflow-x:auto;scroll-snap-type:x mandatory;}
  .nav-chips{background:transparent;padding:0;gap:8px;}
  .nav-chip{background:var(--chip-bg);scroll-snap-align:start;}
  .nav-link-quiet{display:none;}
  .nav-toggle{display:flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .article-body{padding:32px 28px;}
}
@media (max-width:767.98px){
  .container,.container-wide{padding-left:18px;padding-right:18px;}
  .nav-tabs-wrap{display:none;}
  .site-header .nav-inner{height:64px;}
  .article-hero{padding:32px 0 44px;}
  .section{padding:52px 0;}
  .article-body{padding:26px 20px;font-size:15.5px;}
  .article-body h2{font-size:22px;}
  .article-body h3{font-size:18px;}
  .post-nav{grid-template-columns:1fr;}
  .related-grid{grid-template-columns:1fr;}
  .related-section{padding:12px 0 64px;}
  .cta-band{padding:44px 0;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
}
@media (max-width:575.98px){
  .brand-text{font-size:17px;}
  .btn{width:100%;}
  .nav-right .btn{width:auto;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category1 */
:root{
  --brand-900:#0E3B36;
  --brand-700:#14574E;
  --brand-600:#1B6A5E;
  --brand-100:#E4EFEA;
  --accent-500:#D98324;
  --ink-900:#17211F;
  --ink-700:#33403D;
  --ink-500:#6B7A76;
  --paper:#FAF8F4;
  --surface:#FFFFFF;
  --line:#E6E2D9;
  --chip-bg:#F1EDE6;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-s:0 1px 2px rgba(23,33,31,.06);
  --shadow-m:0 10px 30px -12px rgba(20,50,45,.18);
  --space-section:96px;

  --bs-primary:var(--brand-600);
  --bs-body-bg:var(--paper);
  --bs-body-color:var(--ink-700);
  --bs-border-radius:var(--radius-btn);
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --bs-link-color:var(--brand-600);
  --bs-link-hover-color:var(--brand-700);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .18s ease,opacity .18s ease;}
a:visited{color:var(--brand-600);}
a:hover{color:var(--brand-700);text-decoration:underline;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;letter-spacing:-.01em;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:28px;line-height:1.3;}
h3{font-size:19px;line-height:1.45;font-weight:600;}
p{margin:0 0 1.2em;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-wide{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
.container-read{width:100%;max-width:760px;margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-s);}
.nav-inner{
  min-height:72px;
  display:flex;align-items:center;gap:24px;
}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--ink-900);text-decoration:none;flex:0 0 auto;
}
.brand:hover{text-decoration:none;color:var(--ink-900);}
.brand-mark{
  width:28px;height:28px;display:grid;
  grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:3px;
  flex:0 0 auto;
}
.brand-mark i{display:block;background:var(--brand-600);border-radius:3px;}
.brand-mark i:nth-child(2){background:var(--brand-700);}
.brand-mark i:nth-child(3){background:var(--brand-700);}
.brand-mark i:nth-child(4){background:var(--accent-500);}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.01em;}
.nav-tabs-wrap{flex:1 1 auto;display:flex;justify-content:center;min-width:0;}
.nav-chips{
  display:flex;align-items:center;gap:4px;
  background:var(--chip-bg);border-radius:var(--radius-pill);
  padding:4px;
  overflow-x:auto;max-width:100%;
  scrollbar-width:none;
  scroll-snap-type:x proximity;
}
.nav-chips::-webkit-scrollbar{display:none;}
.nav-chip{
  display:inline-flex;align-items:center;
  height:40px;padding:0 18px;
  border-radius:var(--radius-pill);
  font-size:15px;color:var(--ink-700);white-space:nowrap;
  scroll-snap-align:start;
  transition:color .18s ease,background .18s ease,box-shadow .18s ease;
}
.nav-chip:hover{color:var(--brand-600);text-decoration:none;}
.nav-chip.active{
  background:var(--surface);color:var(--brand-600);
  font-weight:600;box-shadow:var(--shadow-s);
}
.nav-right{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-link-quiet{font-size:15px;color:var(--ink-700);}
.nav-link-quiet:hover{color:var(--brand-600);text-decoration:none;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:var(--surface);border-radius:12px;
  padding:0;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  cursor:pointer;transition:border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{border-color:rgba(27,106,94,.35);}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-btn);
  font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  cursor:pointer;
}
.btn-sm{height:40px;padding:0 18px;font-size:15px;}
.btn-lg{height:50px;padding:0 26px;font-size:16px;}
.btn-primary{background:var(--brand-600);color:#FAF8F4;}
.btn-primary:visited{color:#FAF8F4;}
.btn-primary:hover{background:var(--brand-700);color:#FFFFFF;text-decoration:none;transform:translateY(-1px);box-shadow:var(--shadow-m);}
.btn-primary:active{transform:translateY(0);box-shadow:none;}
.btn-outline{background:transparent;color:var(--brand-600);border-color:rgba(27,106,94,.45);}
.btn-outline:visited{color:var(--brand-600);}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);text-decoration:none;}
.btn-inverse{background:#FAF8F4;color:var(--brand-900);}
.btn-inverse:visited{color:var(--brand-900);}
.btn-inverse:hover{background:#FFFFFF;color:var(--brand-900);text-decoration:none;transform:translateY(-1px);box-shadow:0 12px 28px -14px rgba(0,0,0,.5);}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-weight:600;font-size:15px;color:var(--brand-600);
}
.link-arrow::after{content:"→";display:inline-block;transition:transform .18s ease;}
.link-arrow:hover{text-decoration:none;color:var(--brand-700);}
.link-arrow:hover::after{transform:translateX(3px);}

/* ============ 通用标签 ============ */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  color:var(--brand-600);background:var(--brand-100);
  padding:7px 14px;border-radius:var(--radius-pill);
}
.chip{
  display:inline-flex;align-items:center;
  font-size:12px;letter-spacing:.06em;font-weight:600;
  color:var(--brand-600);background:var(--brand-100);
  padding:5px 12px;border-radius:var(--radius-pill);
}
.chip-accent{color:#8A5314;background:rgba(217,131,36,.14);}

/* ============ 面包屑 ============ */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--paper);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);padding:16px 0;}
.crumb a{color:var(--ink-500);}
.crumb a:hover{color:var(--brand-600);text-decoration:none;}
.crumb .sep{color:var(--line);}
.crumb .current{color:var(--ink-900);font-weight:600;}

/* ============ 板块 ============ */
.section{padding:var(--space-section) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{margin:16px 0 14px;}
.section-head p{font-size:16px;color:var(--ink-700);margin:0;}
.section-head-center{max-width:720px;margin:0 auto 40px;text-align:center;}
.section-head-center .eyebrow{margin:0 auto;}

/* ============ 简化 Hero ============ */
.hero-slim{
  position:relative;overflow:hidden;
  padding:72px 0 64px;
  background:
    linear-gradient(115deg,rgba(27,106,94,.09) 0%,rgba(27,106,94,0) 46%),
    radial-gradient(1200px 400px at 88% -10%,rgba(217,131,36,.10),transparent 60%),
    var(--paper);
  border-bottom:1px solid var(--line);
}
.hero-slim::after{
  content:"";position:absolute;right:-140px;top:-120px;width:460px;height:460px;
  background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  opacity:.10;border-radius:50%;pointer-events:none;
}
.hero-slim-grid{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;align-items:center;position:relative;z-index:1;
}
.hero-slim h1{margin:20px 0 18px;max-width:22em;}
.hero-slim .lede{font-size:17px;max-width:34em;margin-bottom:28px;}
.hero-facts{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));
  gap:16px;margin-top:28px;
}
.fact{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px 18px 16px;box-shadow:var(--shadow-s);
}
.fact-num{font-size:24px;font-weight:700;color:var(--brand-600);line-height:1.2;}
.fact-num small{font-size:13px;font-weight:600;color:var(--ink-500);margin-left:3px;letter-spacing:0;}
.fact-label{font-size:14px;color:var(--ink-500);margin-top:6px;}
.hero-media{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-m);
  background:var(--surface);
}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ============ 锚点 chip 条 ============ */
.anchor-bar{
  position:sticky;top:72px;z-index:40;
  background:rgba(250,248,244,.94);
  backdrop-filter:blur(6px);
  border-bottom:1px solid var(--line);
}
.anchor-chips{
  display:flex;gap:8px;overflow-x:auto;padding:12px 0;
  scrollbar-width:none;scroll-snap-type:x proximity;
}
.anchor-chips::-webkit-scrollbar{display:none;}
.anchor-chip{
  display:inline-flex;align-items:center;gap:8px;
  height:38px;padding:0 16px;flex:0 0 auto;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);background:var(--surface);
  font-size:14px;color:var(--ink-700);scroll-snap-align:start;
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.anchor-chip:hover{border-color:rgba(27,106,94,.35);color:var(--brand-600);text-decoration:none;background:var(--brand-100);}
.anchor-chip b{color:var(--brand-600);font-weight:700;}

/* ============ 图文交替 ============ */
.feature-row{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:56px;align-items:center;
  padding:56px 0;
  border-bottom:1px dashed var(--line);
}
.feature-row:last-of-type{border-bottom:0;}
.feature-row.reverse .feature-media{order:2;}
.feature-row.reverse .feature-body{order:1;}
.feature-media{
  border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--shadow-s);
  background:var(--surface);
}
.feature-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease;}
.feature-row:hover .feature-media img{transform:scale(1.02);}
.feature-body h2{margin:18px 0 16px;}
.feature-body p{max-width:34em;}
.tick-list{margin:20px 0 24px;display:grid;gap:10px;}
.tick-list li{
  position:relative;padding-left:28px;font-size:15px;color:var(--ink-700);
}
.tick-list li::before{
  content:"";position:absolute;left:0;top:9px;
  width:14px;height:8px;border-left:2px solid var(--brand-600);
  border-bottom:2px solid var(--brand-600);transform:rotate(-45deg);
}
.feature-meta{
  display:flex;flex-wrap:wrap;gap:10px;margin-top:20px;
}
.meta-pill{
  font-size:13px;color:var(--ink-500);
  border:1px solid var(--line);border-radius:var(--radius-pill);
  padding:6px 14px;background:var(--surface);
}

/* ============ 参数清单 ============ */
.spec-wrap{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.spec-block{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 26px 22px;box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.spec-block:hover{transform:translateY(-4px);border-color:rgba(27,106,94,.22);box-shadow:var(--shadow-m);}
.spec-block h3{margin-bottom:4px;}
.spec-block .spec-sub{font-size:14px;color:var(--ink-500);margin-bottom:16px;}
.spec-list{display:grid;gap:0;}
.spec-list li{
  display:flex;justify-content:space-between;gap:20px;
  padding:11px 0;border-bottom:1px dashed var(--line);
  font-size:15px;
}
.spec-list li:last-child{border-bottom:0;}
.spec-list .k{color:var(--ink-500);}
.spec-list .v{color:var(--ink-900);font-weight:600;text-align:right;}

/* ============ 交付说明卡 ============ */
.deliver-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.deliver-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:28px 24px;box-shadow:var(--shadow-s);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.deliver-card:hover{transform:translateY(-4px);border-color:rgba(27,106,94,.22);box-shadow:var(--shadow-m);}
.deliver-num{
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--accent-500);margin-bottom:14px;
}
.deliver-card h3{margin-bottom:10px;}
.deliver-card p{font-size:15px;color:var(--ink-700);margin:0;}

/* ============ 底部 CTA ============ */
.cta-band{background:var(--brand-900);padding:64px 0;}
.cta-inner{
  display:flex;align-items:center;justify-content:space-between;gap:40px;
}
.cta-inner h2{color:#FAF8F4;margin-bottom:10px;}
.cta-inner p{color:rgba(250,248,244,.72);margin:0;max-width:44em;font-size:15px;}
.cta-inner .cta-action{flex:0 0 auto;}

/* ============ 页脚 ============ */
.site-footer{background:var(--brand-900);color:rgba(250,248,244,.72);padding:72px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;
  gap:40px;padding-bottom:48px;
}
.site-footer .brand{color:#FAF8F4;}
.site-footer .brand:hover{color:#FAF8F4;}
.site-footer .brand-text{color:#FAF8F4;}
.site-footer .brand-mark i{background:#FAF8F4;}
.site-footer .brand-mark i:nth-child(4){background:var(--accent-500);}
.footer-brand p{font-size:14px;line-height:1.8;margin:16px 0 0;color:rgba(250,248,244,.68);}
.footer-contact{display:grid;gap:6px;margin-top:18px;font-size:14px;color:rgba(250,248,244,.68);}
.site-footer h4{color:#FAF8F4;font-size:15px;margin:0 0 16px;letter-spacing:.02em;}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:rgba(250,248,244,.72);font-size:14px;}
.footer-links a:hover{color:#FAF8F4;text-decoration:none;}
.footer-note{font-size:13px;color:rgba(250,248,244,.55);margin:12px 0 0;}
.subscribe-form{display:flex;gap:10px;margin-top:14px;}
.subscribe-form input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;
  border-radius:var(--radius-btn);
  border:1px solid rgba(250,248,244,.24);
  background:rgba(255,255,255,.06);
  color:#FAF8F4;font-size:14px;
}
.subscribe-form input::placeholder{color:rgba(250,248,244,.45);}
.subscribe-form input:focus{
  outline:none;border-color:rgba(250,248,244,.6);
  background:rgba(255,255,255,.12);
}
.footer-bottom{
  border-top:1px solid rgba(250,248,244,.16);
  padding:20px 0;
  display:flex;flex-wrap:wrap;gap:12px 28px;align-items:center;justify-content:space-between;
  font-size:13px;color:rgba(250,248,244,.6);
}
.footer-bottom a{color:rgba(250,248,244,.72);}
.footer-bottom a:hover{color:#FAF8F4;text-decoration:none;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  :root{--space-section:72px;}
  h1{font-size:34px;}
  h2{font-size:25px;}
  .hero-slim-grid{gap:36px;}
  .feature-row{gap:40px;}
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr;gap:32px;}
  .footer-grid > div:last-child{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .nav-tabs-wrap{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-inner{min-height:64px;gap:16px;}
  .nav-link-quiet{display:none;}
  .site-header.drawer-open .nav-tabs-wrap{
    display:block;position:absolute;left:0;right:0;top:100%;
    background:var(--surface);border-bottom:1px solid var(--line);
    box-shadow:var(--shadow-m);padding:16px 24px 20px;
  }
  .site-header.drawer-open .nav-chips{
    flex-direction:column;align-items:stretch;background:transparent;
    padding:0;gap:6px;overflow:visible;
  }
  .site-header.drawer-open .nav-chip{
    height:48px;justify-content:flex-start;padding:0 16px;border-radius:12px;
    border:1px solid var(--line);
  }
  .site-header.drawer-open .nav-chip.active{background:var(--brand-100);border-color:rgba(27,106,94,.22);}
  .hero-slim{padding:56px 0 48px;}
  .hero-slim-grid{grid-template-columns:minmax(0,1fr);}
  .hero-media{order:-1;}
  .feature-row,.feature-row.reverse{grid-template-columns:minmax(0,1fr);gap:28px;padding:40px 0;}
  .feature-row.reverse .feature-media{order:0;}
  .feature-row.reverse .feature-body{order:0;}
  .spec-grid{grid-template-columns:minmax(0,1fr);}
  .deliver-grid{grid-template-columns:minmax(0,1fr);}
  .anchor-bar{top:64px;}
  .cta-inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .footer-grid > div:last-child{grid-column:auto;}
}
@media (max-width:767.98px){
  .container,.container-wide,.container-read{padding:0 20px;}
  .footer-grid{grid-template-columns:1fr;}
  .hero-facts{grid-template-columns:1fr 1fr;}
}
@media (max-width:575.98px){
  :root{--space-section:56px;}
  h1{font-size:28px;}
  h2{font-size:22px;}
  h3{font-size:17px;}
  body{font-size:15px;}
  .hero-slim h1{margin-top:16px;}
  .hero-facts{grid-template-columns:1fr;}
  .hero-actions{display:grid;gap:12px;}
  .hero-actions .btn{width:100%;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .spec-block{padding:22px 18px;}
  .spec-list li{flex-direction:column;gap:2px;}
  .spec-list .v{text-align:left;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
}

/* roulang page: category2 */
:root{
  --brand-900:#0E3B36;
  --brand-700:#14574E;
  --brand-600:#1B6A5E;
  --brand-100:#E4EFEA;
  --accent-500:#D98324;
  --ink-900:#17211F;
  --ink-700:#33403D;
  --ink-500:#6B7A76;
  --paper:#FAF8F4;
  --surface:#FFFFFF;
  --line:#E6E2D9;
  --chip-bg:#F1EDE6;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --shadow-s:0 1px 2px rgba(23,33,31,.06);
  --shadow-m:0 10px 30px -12px rgba(20,50,45,.18);
  --c-wide:1320px;
  --c-std:1200px;
  --c-read:760px;

  --bs-primary:#1B6A5E;
  --bs-primary-rgb:27,106,94;
  --bs-body-bg:#FAF8F4;
  --bs-body-color:#33403D;
  --bs-border-radius:12px;
  --bs-border-color:#E6E2D9;
  --bs-link-color:#1B6A5E;
  --bs-link-hover-color:#14574E;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}

*,*::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","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:visited{color:var(--brand-600);}
a:hover{color:var(--brand-700);text-decoration:underline;}
h1,h2,h3,h4,h5{color:var(--ink-900);margin:0 0 .6em;line-height:1.3;letter-spacing:-.01em;}
h1{font-size:38px;font-weight:700;line-height:1.25;}
h2{font-size:28px;font-weight:700;}
h3{font-size:20px;font-weight:600;}
h4{font-size:16px;font-weight:600;}
p{margin:0 0 1.2em;}
ul,ol{margin:0 0 1.2em;padding-left:1.2em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:var(--c-std);margin:0 auto;padding:0 24px;}
.container-wide{width:100%;max-width:var(--c-wide);margin:0 auto;padding:0 24px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  text-decoration:none;
}
.btn:hover{text-decoration:none;transform:translateY(-1px);}
.btn:active{transform:translateY(0);}
.btn-primary{background:var(--brand-600);border-color:var(--brand-600);color:#FAF8F4;}
.btn-primary:hover,.btn-primary:focus{background:var(--brand-700);border-color:var(--brand-700);color:#FAF8F4;box-shadow:var(--shadow-m);}
.btn-outline{background:transparent;border-color:var(--brand-600);color:var(--brand-600);}
.btn-outline:hover,.btn-outline:focus{background:var(--brand-100);border-color:var(--brand-600);color:var(--brand-700);}
.btn-light{background:#FAF8F4;border-color:#FAF8F4;color:var(--brand-900);}
.btn-light:hover,.btn-light:focus{background:#FFFFFF;border-color:#FFFFFF;color:var(--brand-900);box-shadow:var(--shadow-m);}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:10px;}
.btn-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-block{width:100%;}

.text-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand-600);
}
.text-link span{transition:transform .2s ease;}
.text-link:hover{color:var(--brand-700);text-decoration:none;}
.text-link:hover span{transform:translateX(3px);}

.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;
  border-radius:999px;background:var(--brand-100);color:var(--brand-700);
  font-size:12px;font-weight:600;letter-spacing:.08em;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  height:32px;padding:0 14px;border-radius:999px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:13px;font-weight:600;letter-spacing:.04em;
  margin-bottom:18px;
}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(250,248,244,.94);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background-color .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-s);background:rgba(255,255,255,.94);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.brand:hover{text-decoration:none;}
.brand-mark{display:grid;grid-template-columns:repeat(2,9px);grid-template-rows:repeat(2,9px);gap:3px;}
.brand-mark i{display:block;border-radius:2px;background:var(--brand-600);}
.brand-mark i:nth-child(2){background:var(--brand-900);}
.brand-mark i:nth-child(3){background:var(--accent-500);}
.brand-mark i:nth-child(4){background:var(--brand-700);}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:.01em;}
.nav-tabs-wrap{flex:1 1 auto;display:flex;justify-content:center;min-width:0;}
.nav-chips{
  display:flex;align-items:center;gap:4px;
  background:var(--chip-bg);border-radius:999px;padding:4px;
  overflow-x:auto;scrollbar-width:none;-ms-overflow-style:none;
}
.nav-chips::-webkit-scrollbar{display:none;}
.nav-chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:999px;white-space:nowrap;
  font-size:14px;font-weight:600;color:var(--ink-700);
  transition:color .18s ease,background-color .18s ease,box-shadow .18s ease;
}
.nav-chip:hover{color:var(--brand-600);text-decoration:none;background:rgba(255,255,255,.5);}
.nav-chip.active{background:#fff;color:var(--brand-600);box-shadow:var(--shadow-s);}
.nav-right{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-link-quiet{font-size:14px;font-weight:600;color:var(--ink-700);}
.nav-link-quiet:hover{color:var(--brand-600);text-decoration:none;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;
  background:transparent;border:1px solid var(--line);border-radius:10px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:var(--ink-900);border-radius:2px;}

/* ---------- 移动抽屉 ---------- */
.mobile-drawer{
  position:fixed;inset:0;z-index:1100;
  background:rgba(14,59,54,.35);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.mobile-drawer.is-open{opacity:1;visibility:visible;}
.drawer-panel{
  position:absolute;top:0;right:0;bottom:0;width:min(320px,86vw);
  background:var(--surface);padding:20px;
  transform:translateX(100%);transition:transform .3s ease;
  display:flex;flex-direction:column;gap:18px;overflow-y:auto;
}
.mobile-drawer.is-open .drawer-panel{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;}
.drawer-close{
  width:40px;height:40px;border-radius:10px;border:1px solid var(--line);
  background:transparent;font-size:22px;line-height:1;color:var(--ink-700);cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:4px;}
.drawer-nav a{
  display:flex;align-items:center;min-height:48px;padding:0 14px;
  border-radius:12px;font-size:15px;font-weight:600;color:var(--ink-700);
}
.drawer-nav a:hover{background:var(--brand-100);color:var(--brand-700);text-decoration:none;}
.drawer-nav a.active{background:var(--brand-100);color:var(--brand-700);}

/* ---------- 板块 ---------- */
.section{padding:96px 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head h2{margin-bottom:12px;}
.section-head p{font-size:16px;color:var(--ink-500);margin:0;}
.section-head-center{margin-left:auto;margin-right:auto;text-align:center;}

/* ---------- 首屏 ---------- */
.page-hero{
  position:relative;
  padding:72px 0 80px;
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(27,106,94,.10) 0%, rgba(27,106,94,0) 58%),
    var(--paper);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.page-hero::after{
  content:"";position:absolute;left:-140px;top:60px;width:360px;height:360px;
  background:rgba(217,131,36,.06);border-radius:36px;transform:rotate(18deg);z-index:0;
}
.hero-inner{
  position:relative;z-index:1;
  display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:56px;align-items:center;
}
.breadcrumb-line{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);margin-bottom:20px;flex-wrap:wrap;}
.breadcrumb-line a{color:var(--ink-500);}
.breadcrumb-line a:hover{color:var(--brand-600);}
.breadcrumb-line em{font-style:normal;color:var(--ink-900);font-weight:600;}
.hero-copy h1{margin-bottom:18px;max-width:16em;}
.hero-sub{font-size:17px;color:var(--ink-700);max-width:32em;margin-bottom:26px;}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px;}
.hero-points{list-style:none;padding:0;margin:0;display:grid;gap:10px;}
.hero-points li{position:relative;padding-left:26px;font-size:15px;color:var(--ink-700);}
.hero-points li::before{
  content:"✓";position:absolute;left:0;top:0;
  width:18px;height:18px;line-height:18px;text-align:center;
  border-radius:50%;background:var(--brand-100);color:var(--brand-600);
  font-size:11px;font-weight:700;
}
.hero-media{position:relative;}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;
  border-radius:var(--radius-lg);border:1px solid var(--line);box-shadow:var(--shadow-m);
}
.hero-float{
  position:absolute;left:-18px;bottom:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-m);padding:14px 20px;display:flex;align-items:baseline;gap:10px;
}
.hero-float strong{font-size:30px;font-weight:700;color:var(--brand-600);line-height:1;}
.hero-float span{font-size:13px;color:var(--ink-500);}

/* ---------- 筛选条 ---------- */
.filter-bar{
  display:flex;gap:10px;flex-wrap:wrap;margin-bottom:36px;
  padding:6px;background:var(--chip-bg);border-radius:999px;width:fit-content;max-width:100%;
  overflow-x:auto;scrollbar-width:none;
}
.filter-bar::-webkit-scrollbar{display:none;}
.filter-chip{
  display:inline-flex;align-items:center;height:40px;padding:0 20px;
  border-radius:999px;border:0;background:transparent;
  font-size:14px;font-weight:600;color:var(--ink-700);cursor:pointer;white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.filter-chip:hover{color:var(--brand-600);}
.filter-chip.is-active{background:#fff;color:var(--brand-600);box-shadow:var(--shadow-s);}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 32px;align-items:start;}
.scene-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-s);align-self:start;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(27,106,94,.35);}
.scene-card.is-hidden{display:none;}
.scene-media{position:relative;overflow:hidden;}
.scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .5s ease;}
.scene-card:hover .scene-media img{transform:scale(1.04);}
.scene-tag{
  position:absolute;left:14px;top:14px;
  background:rgba(255,255,255,.94);color:var(--brand-700);
  font-size:12px;font-weight:600;letter-spacing:.08em;
  padding:5px 12px;border-radius:999px;box-shadow:var(--shadow-s);
}
.scene-body{padding:22px 22px 24px;}
.scene-body h3{margin:12px 0 8px;font-size:19px;}
.scene-body p{font-size:14.5px;color:var(--ink-500);margin-bottom:0;}
.scene-spec{display:flex;flex-wrap:wrap;gap:8px 18px;margin:16px 0 18px;padding:0;}
.scene-spec div{display:flex;gap:6px;font-size:13px;line-height:1.6;}
.scene-spec dt{color:var(--ink-500);font-weight:400;margin:0;}
.scene-spec dd{margin:0;color:var(--ink-900);font-weight:600;}

/* ---------- 配置清单 ---------- */
.config-wrap{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);gap:56px;align-items:start;}
.config-note{
  background:var(--brand-100);border-radius:var(--radius-card);padding:20px 22px;margin-top:20px;
}
.config-note p{margin:0;font-size:14px;color:var(--brand-700);}
.spec-list{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-s);padding:8px 24px;
}
.spec-row{
  display:flex;gap:20px;align-items:baseline;justify-content:space-between;
  padding:16px 0;border-bottom:1px dashed var(--line);
}
.spec-row:last-child{border-bottom:0;}
.spec-row dt{font-size:14px;color:var(--ink-500);margin:0;flex:0 0 auto;}
.spec-row dd{margin:0;font-size:15px;font-weight:600;color:var(--ink-900);text-align:right;}

/* ---------- 交付节奏 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}
.step{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px 22px;box-shadow:var(--shadow-s);position:relative;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(27,106,94,.35);}
.step-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;border-radius:10px;
  background:var(--brand-100);color:var(--brand-700);
  font-size:14px;font-weight:700;margin-bottom:14px;
}
.step h3{font-size:17px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-500);margin:0;}

/* ---------- FAQ ---------- */
.faq-wrap{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:56px;align-items:start;}
.faq-list{display:grid;gap:12px;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  padding:0;box-shadow:var(--shadow-s);position:relative;overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand-600);transform:scaleY(0);transform-origin:top;
  transition:transform .25s ease;
}
.faq-item[open]::before{transform:scaleY(1);}
.faq-item[open]{box-shadow:var(--shadow-m);border-color:rgba(27,106,94,.35);}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 52px 18px 22px;
  font-size:16px;font-weight:600;color:var(--ink-900);position:relative;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);
  font-size:20px;font-weight:400;color:var(--brand-600);transition:transform .25s ease;
}
.faq-item[open] summary::after{content:"+";transform:translateY(-50%) rotate(45deg);}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--ink-700);}
.faq-answer p{margin:0;}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--brand-900);padding:64px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{color:#FAF8F4;margin-bottom:8px;font-size:26px;}
.cta-inner p{color:rgba(250,248,244,.72);margin:0;font-size:15px;max-width:44em;}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--brand-900);color:rgba(250,248,244,.72);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(250,248,244,.14);}
.site-footer .brand-text{color:#FAF8F4;}
.site-footer .brand-mark i{background:rgba(250,248,244,.85);}
.site-footer .brand-mark i:nth-child(3){background:var(--accent-500);}
.site-footer h4{color:#FAF8F4;font-size:15px;margin-bottom:16px;letter-spacing:.04em;}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(250,248,244,.72);}
.footer-brand p{margin:16px 0 18px;max-width:34em;}
.footer-contact{display:grid;gap:6px;font-size:13.5px;color:rgba(250,248,244,.62);}
.footer-links{display:grid;gap:10px;}
.footer-links a{color:rgba(250,248,244,.72);font-size:14px;}
.footer-links a:hover{color:#FAF8F4;text-decoration:none;}
.footer-note{font-size:12.5px;color:rgba(250,248,244,.55);margin:10px 0 0;}
.subscribe-form{display:flex;gap:10px;}
.subscribe-form input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;
  border-radius:12px;border:1px solid rgba(250,248,244,.22);
  background:rgba(250,248,244,.08);color:#FAF8F4;font-size:14px;
}
.subscribe-form input::placeholder{color:rgba(250,248,244,.45);}
.subscribe-form input:focus{outline:none;border-color:var(--brand-100);background:rgba(250,248,244,.14);}
.subscribe-form .btn{flex:0 0 auto;background:var(--brand-600);border-color:var(--brand-600);color:#FAF8F4;}
.subscribe-form .btn:hover{background:var(--brand-700);border-color:var(--brand-700);}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px 28px;justify-content:space-between;
  padding-top:24px;font-size:13px;color:rgba(250,248,244,.55);
}
.footer-bottom a{color:rgba(250,248,244,.7);}
.footer-bottom a:hover{color:#FAF8F4;text-decoration:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  h1{font-size:34px;}
  .hero-inner{gap:40px;}
  .config-wrap,.faq-wrap{gap:40px;}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .section-tight{padding:52px 0;}
  .nav-tabs-wrap,.nav-link-quiet{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{height:64px;justify-content:space-between;}
  .hero-inner{grid-template-columns:minmax(0,1fr);}
  .page-hero{padding:48px 0 56px;}
  .hero-media{order:-1;}
  .hero-float{left:12px;bottom:12px;padding:12px 16px;}
  .hero-float strong{font-size:24px;}
  .config-wrap,.faq-wrap{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}
@media (max-width:767.98px){
  .container,.container-wide{padding:0 18px;}
  h1{font-size:29px;}
  h2{font-size:23px;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .scene-grid{grid-template-columns:minmax(0,1fr);gap:20px;}
  .scene-card:nth-child(even){margin-top:0;}
  .spec-row{flex-direction:column;gap:4px;}
  .spec-row dd{text-align:left;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn{width:100%;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (min-width:992px){
  .scene-card:nth-child(even){margin-top:36px;}
}
@media (max-width:575.98px){
  .steps{grid-template-columns:minmax(0,1fr);}
  .filter-bar{width:100%;border-radius:16px;}
  .scene-body{padding:18px 18px 20px;}
}

/* roulang page: category4 */
:root{
  --brand-900:#0E3B36;
  --brand-700:#14574E;
  --brand-600:#1B6A5E;
  --brand-100:#E4EFEA;
  --accent-500:#D98324;
  --ink-900:#17211F;
  --ink-700:#33403D;
  --ink-500:#6B7A76;
  --paper:#FAF8F4;
  --surface:#FFFFFF;
  --line:#E6E2D9;
  --chip-bg:#F1EDE6;
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --shadow-s:0 1px 2px rgba(23,33,31,.06);
  --shadow-m:0 10px 30px -12px rgba(20,50,45,.18);
  --space-section:96px;

  --bs-primary:#1B6A5E;
  --bs-body-bg:#FAF8F4;
  --bs-body-color:#33403D;
  --bs-border-radius:16px;
  --bs-border-color:#E6E2D9;
  --bs-link-color:#1B6A5E;
  --bs-link-hover-color:#14574E;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-700);text-decoration:underline;}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;letter-spacing:-0.01em;}
h1{font-size:40px;line-height:1.25;}
h2{font-size:30px;line-height:1.3;}
h3{font-size:20px;line-height:1.45;font-weight:600;}
p{margin:0 0 1.2em;color:var(--ink-700);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-wide{width:100%;max-width:1320px;margin:0 auto;padding:0 24px;}
.container-read{width:100%;max-width:760px;margin:0 auto;padding:0 24px;}
.section{padding:var(--space-section) 0;}
.section-tight{padding:64px 0;}
.section-head{max-width:760px;margin-bottom:32px;}
.section-head p{margin-top:14px;margin-bottom:0;font-size:16px;color:var(--ink-500);}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
  color:var(--brand-700);background:var(--brand-100);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.hint{font-size:14px;line-height:1.7;color:var(--ink-500);}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(250,248,244,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{background:rgba(255,255,255,.92);box-shadow:var(--shadow-s);}
.nav-inner{display:flex;align-items:center;gap:20px;height:72px;}
.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto;}
.brand:hover{text-decoration:none;}
.brand-mark{width:26px;height:26px;display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;gap:3px;}
.brand-mark i{display:block;background:var(--brand-600);border-radius:3px;}
.brand-mark i:nth-child(2){background:var(--accent-500);}
.brand-mark i:nth-child(3){background:var(--brand-700);}
.brand-mark i:nth-child(4){background:var(--brand-100);}
.brand-text{font-size:19px;font-weight:700;color:var(--ink-900);letter-spacing:-0.01em;}
.nav-tabs-wrap{flex:1 1 auto;display:flex;justify-content:center;min-width:0;}
.nav-chips{
  display:flex;gap:4px;padding:4px;background:var(--chip-bg);
  border-radius:999px;overflow-x:auto;scrollbar-width:none;
  scroll-snap-type:x proximity;
}
.nav-chips::-webkit-scrollbar{display:none;}
.nav-chip{
  flex:0 0 auto;scroll-snap-align:start;
  padding:8px 16px;border-radius:999px;font-size:14px;line-height:1.4;
  color:var(--ink-700);white-space:nowrap;transition:color .2s ease,background .2s ease;
}
.nav-chip:hover{color:var(--brand-600);text-decoration:none;}
.nav-chip.active{background:var(--surface);color:var(--brand-600);font-weight:600;box-shadow:var(--shadow-s);}
.nav-right{display:flex;align-items:center;gap:16px;flex:0 0 auto;}
.nav-link-quiet{font-size:14px;color:var(--ink-700);}
.nav-link-quiet:hover{color:var(--brand-600);text-decoration:none;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;padding:0 10px;border:1px solid var(--line);
  border-radius:12px;background:var(--surface);cursor:pointer;
}
.nav-toggle span{display:block;height:2px;border-radius:2px;background:var(--ink-900);}

.mobile-drawer{
  position:fixed;inset:0;z-index:70;background:rgba(23,33,31,.38);
  opacity:0;visibility:hidden;transition:opacity .25s ease,visibility .25s ease;
}
.mobile-drawer.open{opacity:1;visibility:visible;}
.mobile-drawer-inner{
  position:absolute;top:0;right:0;height:100%;width:min(86vw,340px);
  background:var(--surface);padding:28px 22px;
  display:flex;flex-direction:column;gap:6px;
  transform:translateX(100%);transition:transform .3s ease;overflow-y:auto;
}
.mobile-drawer.open .mobile-drawer-inner{transform:translateX(0);}
.drawer-title{font-size:12px;letter-spacing:.08em;color:var(--ink-500);margin-bottom:10px;}
.drawer-link{
  display:flex;align-items:center;min-height:46px;
  padding:0 12px;border-radius:12px;font-size:15px;color:var(--ink-900);
  border:1px solid transparent;
}
.drawer-link:hover{background:var(--brand-100);color:var(--brand-700);text-decoration:none;}
.drawer-link.active{background:var(--brand-100);color:var(--brand-700);font-weight:600;}
.drawer-cta{margin-top:14px;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1.4;text-decoration:none;
  transition:background .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease,border-color .2s ease;
  cursor:pointer;
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--brand-600);border-color:var(--brand-600);color:#FBF9F5;}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#FFFFFF;transform:translateY(-1px);box-shadow:var(--shadow-m);}
.btn-primary:active{background:var(--brand-900);border-color:var(--brand-900);transform:translateY(0);box-shadow:none;}
.btn-outline{background:transparent;border-color:var(--brand-600);color:var(--brand-700);}
.btn-outline:hover{background:var(--brand-100);color:var(--brand-700);transform:translateY(-1px);}
.btn-outline:active{background:#D6E7E0;transform:translateY(0);}
.btn-invert{background:#FBF9F5;border-color:#FBF9F5;color:var(--brand-900);}
.btn-invert:hover{background:#FFFFFF;border-color:#FFFFFF;color:var(--brand-900);transform:translateY(-1px);box-shadow:0 10px 30px -12px rgba(0,0,0,.5);}
.btn-sm{padding:9px 17px;font-size:14px;border-radius:10px;}
.btn-block{width:100%;}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.link-more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--brand-600);}
.link-more::after{content:"→";transition:transform .2s ease;display:inline-block;}
.link-more:hover{text-decoration:none;color:var(--brand-700);}
.link-more:hover::after{transform:translateX(3px);}

/* ---------- page hero ---------- */
.page-hero{padding:56px 0 44px;background:linear-gradient(180deg,#F3F1EA 0%,var(--paper) 72%);border-bottom:1px solid var(--line);}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-500);margin-bottom:20px;}
.breadcrumb a{color:var(--ink-500);}
.breadcrumb a:hover{color:var(--brand-600);text-decoration:none;}
.breadcrumb .sep{color:#C4BFB3;}
.page-hero h1{max-width:900px;}
.page-hero .lead{max-width:760px;margin-top:18px;font-size:17px;color:var(--ink-700);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-meta{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.meta-pill{
  font-size:13px;color:var(--brand-700);background:var(--surface);
  border:1px solid var(--line);border-radius:999px;padding:7px 15px;
}

/* ---------- metrics ---------- */
.metrics{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  margin-top:-38px;position:relative;z-index:2;
}
.metric-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:26px 26px 22px;box-shadow:var(--shadow-s);transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.metric-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(27,106,94,.2);}
.metric-num{font-size:32px;font-weight:700;color:var(--brand-600);line-height:1.2;letter-spacing:-0.01em;}
.metric-num small{font-size:14px;font-weight:600;color:var(--ink-500);margin-left:4px;}
.metric-label{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.7;}

/* ---------- table ---------- */
.table-scroll{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--radius-card);box-shadow:var(--shadow-s);
}
.compare-table{width:100%;min-width:920px;border-collapse:separate;border-spacing:0;}
.compare-table th,.compare-table td{
  padding:16px 18px;text-align:left;vertical-align:top;
  font-size:15px;border-bottom:1px solid var(--line);line-height:1.7;
}
.compare-table thead th{
  background:var(--brand-100);color:var(--brand-700);
  font-size:14px;letter-spacing:.02em;white-space:nowrap;
  border-bottom:1px solid #D7E5DE;
}
.compare-table thead th:first-child{border-top-left-radius:var(--radius-card);}
.compare-table thead th:last-child{border-top-right-radius:var(--radius-card);}
.compare-table tbody th{
  width:160px;font-weight:600;color:var(--ink-900);background:#FCFBF8;white-space:nowrap;
}
.compare-table tbody tr:last-child th,.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr:hover td{background:#FBFCFB;}
.compare-table td strong{color:var(--brand-700);}
.table-note{margin-top:16px;font-size:14px;color:var(--ink-500);}
.scroll-tip{display:none;margin-bottom:10px;font-size:13px;color:var(--ink-500);}

/* ---------- split block ---------- */
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;}
.split-media{border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow-s);}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.cost-list{display:flex;flex-direction:column;gap:18px;margin-top:8px;}
.cost-item{display:flex;gap:16px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;}
.cost-item:hover{border-color:rgba(27,106,94,.2);box-shadow:var(--shadow-s);}
.cost-index{
  flex:0 0 auto;width:34px;height:34px;border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  background:var(--brand-100);color:var(--brand-700);font-weight:700;font-size:14px;
}
.cost-item h3{font-size:17px;margin-bottom:4px;}
.cost-item p{margin:0;font-size:14px;line-height:1.75;color:var(--ink-500);}
.note-box{
  margin-top:28px;padding:18px 20px;border-left:3px solid var(--accent-500);
  background:#FDFAF3;border-radius:0 12px 12px 0;font-size:14px;line-height:1.8;color:var(--ink-700);
}

/* ---------- price cards ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:stretch;}
.price-card{
  position:relative;display:flex;flex-direction:column;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:34px 28px 30px;box-shadow:var(--shadow-s);
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(27,106,94,.2);}
.price-card.featured{background:var(--brand-900);border-color:var(--brand-900);}
.price-badge{
  position:absolute;top:-13px;left:28px;
  background:var(--accent-500);color:#FFFFFF;font-size:12px;letter-spacing:.08em;
  padding:5px 14px;border-radius:999px;font-weight:600;
}
.price-name{font-size:19px;font-weight:700;color:var(--ink-900);}
.price-audience{margin-top:8px;font-size:14px;color:var(--ink-500);line-height:1.7;}
.price-amount{margin-top:22px;font-size:36px;font-weight:700;color:var(--brand-600);line-height:1.15;letter-spacing:-0.01em;}
.price-amount small{font-size:14px;font-weight:500;color:var(--ink-500);margin-left:6px;letter-spacing:0;}
.price-divider{height:1px;background:var(--line);margin:22px 0;}
.price-features{display:flex;flex-direction:column;gap:12px;flex:1 1 auto;}
.price-features li{position:relative;padding-left:26px;font-size:14px;line-height:1.7;color:var(--ink-700);}
.price-features li::before{
  content:"";position:absolute;left:0;top:7px;width:14px;height:8px;
  border-left:2px solid var(--brand-600);border-bottom:2px solid var(--brand-600);
  transform:rotate(-45deg);border-radius:1px;
}
.price-card .btn{margin-top:28px;}
.price-card.featured .price-name,
.price-card.featured .price-amount{color:#FFFFFF;}
.price-card.featured .price-audience,
.price-card.featured .price-amount small{color:rgba(255,255,255,.72);}
.price-card.featured .price-divider{background:rgba(255,255,255,.18);}
.price-card.featured .price-features li{color:rgba(255,255,255,.86);}
.price-card.featured .price-features li::before{border-color:#F3F1EC;}

/* ---------- faq ---------- */
.faq-layout{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:48px;align-items:start;}
.faq-aside h2{margin-bottom:16px;}
.faq-aside p{font-size:15px;color:var(--ink-500);}
.faq-accordion .accordion-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  margin-bottom:12px;overflow:hidden;
}
.faq-accordion .accordion-button{
  background:var(--surface);color:var(--ink-900);
  font-size:16px;font-weight:600;line-height:1.6;
  padding:20px 52px 20px 20px;border-radius:12px;box-shadow:none;
}
.faq-accordion .accordion-button:not(.collapsed){
  color:var(--brand-700);background:#FBFCFB;
  box-shadow:inset 3px 0 0 var(--brand-600);
}
.faq-accordion .accordion-button:focus{box-shadow:inset 3px 0 0 var(--brand-600),0 0 0 2px var(--brand-600);}
.faq-accordion .accordion-button::after{
  content:"+";background-image:none;font-size:20px;font-weight:400;
  color:var(--brand-600);width:auto;height:auto;
  display:flex;align-items:center;justify-content:center;
  transition:transform .25s ease;
}
.faq-accordion .accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.faq-accordion .accordion-body{
  padding:0 20px 22px;font-size:15px;line-height:1.85;color:var(--ink-700);
  border-top:1px solid transparent;
}

/* ---------- cta band ---------- */
.cta-band{background:var(--brand-900);padding:56px 0;}
.cta-band-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;}
.cta-band h2{color:#FFFFFF;font-size:26px;}
.cta-band p{margin:10px 0 0;color:rgba(255,255,255,.74);font-size:15px;max-width:640px;}

/* ---------- footer ---------- */
.site-footer{background:var(--brand-900);color:rgba(255,255,255,.72);padding:72px 0 28px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px;}
.site-footer h4{color:#FFFFFF;font-size:15px;letter-spacing:.02em;margin-bottom:18px;font-weight:600;}
.site-footer p{color:rgba(255,255,255,.72);font-size:14px;line-height:1.8;}
.site-footer .brand-text{color:#FFFFFF;}
.site-footer .brand-mark i{background:rgba(255,255,255,.85);}
.site-footer .brand-mark i:nth-child(2){background:var(--accent-500);}
.site-footer .brand-mark i:nth-child(3){background:#FFFFFF;}
.site-footer .brand-mark i:nth-child(4){background:rgba(255,255,255,.35);}
.footer-brand p{margin:18px 0 20px;max-width:340px;}
.footer-contact{display:flex;flex-direction:column;gap:8px;font-size:13px;color:rgba(255,255,255,.66);}
.footer-links{display:flex;flex-direction:column;gap:12px;}
.footer-links a{color:rgba(255,255,255,.72);font-size:14px;}
.footer-links a:hover{color:#FFFFFF;text-decoration:none;}
.footer-note{font-size:12px;color:rgba(255,255,255,.5);margin:10px 0 0;line-height:1.7;}
.subscribe-form{display:flex;gap:10px;margin-top:16px;}
.subscribe-form input{
  flex:1 1 auto;min-width:0;height:44px;padding:0 14px;font-size:14px;
  border-radius:12px;border:1px solid rgba(255,255,255,.22);
  background:rgba(255,255,255,.08);color:#FFFFFF;
}
.subscribe-form input::placeholder{color:rgba(255,255,255,.45);}
.subscribe-form input:focus{outline:none;border-color:#FFFFFF;background:rgba(255,255,255,.14);}
.footer-bottom{
  margin-top:56px;padding-top:22px;border-top:1px solid rgba(255,255,255,.14);
  display:flex;flex-wrap:wrap;gap:14px 28px;justify-content:space-between;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom a{color:rgba(255,255,255,.72);}
.footer-bottom a:hover{color:#FFFFFF;text-decoration:none;}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  h1{font-size:36px;}
  h2{font-size:27px;}
  .section{padding:80px 0;}
  .split{gap:36px;}
}
@media (max-width:991.98px){
  .nav-tabs-wrap,.nav-link-quiet{display:none;}
  .nav-toggle{display:flex;}
  .nav-inner{height:64px;gap:12px;}
  .brand-text{font-size:18px;}
  .nav-right{margin-left:auto;}
  h1{font-size:32px;}
  h2{font-size:25px;}
  .section{padding:72px 0;}
  .metrics{grid-template-columns:1fr 1fr;gap:20px;margin-top:-28px;}
  .faq-layout{grid-template-columns:1fr;gap:28px;}
  .split{grid-template-columns:1fr;gap:32px;}
  .price-grid{grid-template-columns:1fr;gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-band-inner{flex-direction:column;align-items:flex-start;}
  .scroll-tip{display:block;}
}
@media (max-width:767.98px){
  body{font-size:15.5px;}
  .container,.container-wide,.container-read{padding:0 18px;}
  h1{font-size:28px;}
  h2{font-size:23px;}
  .section{padding:56px 0;}
  .section-tight{padding:48px 0;}
  .page-hero{padding:44px 0 36px;}
  .page-hero .lead{font-size:16px;}
  .metrics{grid-template-columns:1fr;}
  .hero-actions .btn,.btn-row .btn{width:100%;}
  .subscribe-form{flex-direction:column;}
  .subscribe-form .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:32px;}
  .cta-band{padding:44px 0;}
  .cta-band h2{font-size:22px;}
  .cta-band .btn{width:100%;}
  .compare-table th,.compare-table td{padding:14px 15px;font-size:14px;}
  .price-amount{font-size:32px;}
}
@media (max-width:519.98px){
  h1{font-size:25px;}
  h2{font-size:21px;}
  .brand-text{font-size:17px;}
  .metric-num{font-size:28px;}
  .cost-item{flex-direction:column;gap:12px;}
}

/* roulang page: category3 */
:root{
  --brand-900:#0E3B36;
  --brand-700:#14574E;
  --brand-600:#1B6A5E;
  --brand-100:#E4EFEA;
  --accent-500:#D98324;
  --ink-900:#17211F;
  --ink-700:#33403D;
  --ink-500:#6B7A76;
  --paper:#FAF8F4;
  --surface:#FFFFFF;
  --line:#E6E2D9;
  --chip-bg:#F1EDE6;
  --shadow-s:0 1px 2px rgba(23,33,31,.06);
  --shadow-m:0 10px 30px -12px rgba(20,50,45,.18);
  --radius-card:16px;
  --radius-lg:20px;
  --radius-btn:12px;
  --radius-pill:999px;
  --container:1200px;
  --container-wide:1320px;
  --read:760px;
  --sec-space:96px;
  --bs-primary:#1B6A5E;
  --bs-body-bg:#FAF8F4;
  --bs-body-color:#33403D;
  --bs-border-radius:12px;
  --bs-link-color:#1B6A5E;
  --bs-link-hover-color:#14574E;
  --bs-font-sans-serif:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-700);
  font-family:var(--bs-font-sans-serif);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--brand-600);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brand-700)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--brand-600);outline-offset:2px;border-radius:6px}
h1,h2,h3,h4{color:var(--ink-900);margin:0 0 12px;font-weight:700;letter-spacing:-.01em}
h1{font-size:clamp(30px,4vw,44px);line-height:1.25}
h2{font-size:clamp(24px,3vw,32px);line-height:1.3}
h3{font-size:20px;line-height:1.45;font-weight:600}
h4{font-size:17px;line-height:1.5;font-weight:600}
p{margin:0 0 1.2em}
ul,ol{margin:0 0 1.2em;padding-left:1.2em}
.container,.container-wide{width:100%;margin:0 auto;padding-left:24px;padding-right:24px}
.container{max-width:var(--container)}
.container-wide{max-width:var(--container-wide)}
.read{max-width:var(--read)}

/* header */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(250,248,244,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease,background .25s ease;
}
.site-header.is-scrolled{box-shadow:var(--shadow-s);background:rgba(250,248,244,.96)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--ink-900);font-weight:700;font-size:18px;letter-spacing:-.01em}
.brand:hover{color:var(--brand-700)}
.brand-mark{width:26px;height:26px;display:grid;grid-template-columns:1fr 1fr;gap:3px;flex:0 0 auto}
.brand-mark i{display:block;border-radius:3px;background:var(--brand-600)}
.brand-mark i:nth-child(2){background:var(--brand-700)}
.brand-mark i:nth-child(3){background:var(--brand-700)}
.brand-mark i:nth-child(4){background:var(--accent-500)}
.brand-text{white-space:nowrap}
.nav-tabs-wrap{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.nav-chips{display:flex;align-items:center;gap:2px;background:var(--chip-bg);border-radius:var(--radius-pill);padding:4px;max-width:100%;overflow-x:auto;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.nav-chip{
  display:inline-flex;align-items:center;
  padding:8px 16px;border-radius:var(--radius-pill);
  font-size:14px;color:var(--ink-700);white-space:nowrap;
  transition:color .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-chip:hover{color:var(--brand-600);background:rgba(255,255,255,.55)}
.nav-chip.active{background:var(--surface);color:var(--brand-600);font-weight:600;box-shadow:var(--shadow-s)}
.nav-right{display:flex;align-items:center;gap:16px}
.nav-link-quiet{font-size:14px;color:var(--ink-700)}
.nav-link-quiet:hover{color:var(--brand-600)}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;
  background:var(--surface);cursor:pointer;padding:0;place-items:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink-900);border-radius:2px;margin:3px auto}
.nav-drawer{
  position:fixed;top:0;right:0;height:100%;width:296px;max-width:86vw;
  background:var(--surface);border-left:1px solid var(--line);
  box-shadow:var(--shadow-m);transform:translateX(102%);
  transition:transform .28s ease;z-index:1200;padding:24px 20px;display:flex;flex-direction:column;gap:8px;
}
.nav-drawer.open{transform:translateX(0)}
.nav-drawer .drawer-title{font-size:12px;letter-spacing:.08em;color:var(--ink-500);margin:0 0 8px}
.drawer-link{
  display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:12px;
  color:var(--ink-700);font-size:15px;border:1px solid transparent;
}
.drawer-link:hover{background:var(--brand-100);color:var(--brand-700);border-color:rgba(27,106,94,.18)}
.drawer-link.active{background:var(--brand-100);color:var(--brand-700);font-weight:600}
.nav-overlay{position:fixed;inset:0;background:rgba(14,59,54,.35);opacity:0;visibility:hidden;transition:opacity .25s ease;z-index:1100}
.nav-overlay.open{opacity:1;visibility:visible}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;font-family:inherit;
  padding:13px 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,background .2s ease,border-color .2s ease,box-shadow .2s ease,color .2s ease;
}
.btn-primary{background:var(--brand-600);border-color:var(--brand-600);color:#F7F5F0}
.btn-primary:hover{background:var(--brand-700);border-color:var(--brand-700);color:#FFFFFF;transform:translateY(-1px);box-shadow:var(--shadow-m)}
.btn-primary:active{transform:translateY(0);box-shadow:none}
.btn-ghost{background:transparent;border-color:rgba(27,106,94,.35);color:var(--brand-700)}
.btn-ghost:hover{background:var(--brand-100);border-color:var(--brand-600);color:var(--brand-700)}
.btn-light{background:#F7F5F0;color:var(--brand-900);border-color:#F7F5F0}
.btn-light:hover{background:#FFFFFF;color:var(--brand-900);transform:translateY(-1px);box-shadow:var(--shadow-m)}
.btn-sm{padding:10px 16px;font-size:14px;border-radius:10px}
.btn-block{width:100%}
.text-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--brand-600)}
.text-link i{transition:transform .2s ease}
.text-link:hover{color:var(--brand-700)}
.text-link:hover i{transform:translateX(3px)}

/* chips & badges */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:var(--brand-100);color:var(--brand-700);
  border-radius:var(--radius-pill);padding:6px 14px;
  font-size:12px;letter-spacing:.08em;font-weight:600;
}
.eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent-500)}
.chip{
  display:inline-flex;align-items:center;
  background:var(--brand-100);color:var(--brand-700);
  border-radius:var(--radius-pill);padding:5px 12px;
  font-size:12px;letter-spacing:.06em;font-weight:600;
}
.chip-plain{background:var(--chip-bg);color:var(--ink-700)}

/* sections */
.section{padding:var(--sec-space) 0}
.section-tight{padding:72px 0}
.sec-head{max-width:760px;margin-bottom:32px}
.sec-head p{color:var(--ink-500);margin-bottom:0}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px;flex-wrap:wrap}
.sec-head-row .sec-head{margin-bottom:0}
.divider{height:1px;background:var(--line);border:0;margin:0}

/* hero */
.hero{position:relative;overflow:hidden;padding:56px 0 72px}
.hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(118deg,rgba(228,239,234,.95) 0%,rgba(228,239,234,0) 52%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.crumb{font-size:14px;color:var(--ink-500);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.crumb a{color:var(--ink-500)}
.crumb a:hover{color:var(--brand-600)}
.crumb span{color:var(--line)}
.hero h1{margin:16px 0 16px}
.hero-sub{font-size:17px;color:var(--ink-700);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:28px}
.hero-points{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.hero-points li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--ink-700)}
.hero-points i{color:var(--brand-600);margin-top:6px;font-size:13px}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius-lg);box-shadow:var(--shadow-m)}
.hero-float{
  position:absolute;left:-24px;bottom:-28px;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);
  padding:16px 20px;box-shadow:var(--shadow-m);min-width:196px;
}
.hero-float .flabel{font-size:12px;letter-spacing:.08em;color:var(--ink-500)}
.hero-float .fvalue{font-size:28px;font-weight:700;color:var(--brand-600);line-height:1.2}
.hero-float .fvalue small{font-size:14px;color:var(--ink-500);font-weight:500;margin-left:4px}
.hero-float .fnote{font-size:13px;color:var(--ink-500)}

/* stat bar */
.stat-bar{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  box-shadow:var(--shadow-s);display:grid;grid-template-columns:repeat(4,1fr);
  margin-top:56px;position:relative;z-index:2;
}
.stat-cell{padding:26px 24px;border-right:1px solid var(--line)}
.stat-cell:last-child{border-right:0}
.stat-num{font-size:28px;font-weight:700;color:var(--brand-600);line-height:1.2}
.stat-num small{font-size:14px;font-weight:500;color:var(--ink-500);margin-left:4px}
.stat-label{font-size:14px;color:var(--ink-500);margin-top:6px}

/* case overview cards */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-s);
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-m);border-color:rgba(27,106,94,.2)}
.card h3{margin:14px 0 8px;font-size:18px}
.card p{font-size:14px;color:var(--ink-700);margin-bottom:0}
.card-img{border-radius:14px;overflow:hidden;margin-bottom:20px}
.card-img img{width:100%;aspect-ratio:16/10;object-fit:cover}
.case-card{display:flex;flex-direction:column}
.case-result{
  margin-top:16px;padding-top:16px;border-top:1px dashed var(--line);
  font-size:14px;color:var(--ink-700);
}
.case-result b{color:var(--brand-700);font-weight:700}
.case-result .rnum{color:var(--accent-500);font-weight:700}

/* timeline */
.timeline{position:relative;padding:8px 0 0}
.timeline::before{
  content:"";position:absolute;left:23px;top:12px;bottom:24px;width:2px;
  background:linear-gradient(180deg,var(--brand-600) 0%,rgba(27,106,94,.16) 100%);
}
.tl-item{position:relative;padding:0 0 32px 76px}
.tl-item:last-child{padding-bottom:0}
.tl-dot{
  position:absolute;left:0;top:0;width:48px;height:48px;border-radius:50%;
  background:var(--brand-600);color:#F7F5F0;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 0 6px var(--paper),var(--shadow-s);
}
.tl-body{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:24px 28px;box-shadow:var(--shadow-s)}
.tl-body h3{margin-bottom:8px}
.tl-body p{color:var(--ink-700);font-size:15px;margin-bottom:16px}
.tl-meta{display:flex;flex-wrap:wrap;gap:10px}
.tl-meta span{
  display:inline-flex;align-items:center;gap:6px;
  background:var(--chip-bg);border-radius:var(--radius-pill);
  padding:6px 12px;font-size:13px;color:var(--ink-700);
}
.tl-meta span i{color:var(--brand-600);font-size:12px}

/* records */
.record-row{
  display:grid;grid-template-columns:260px 1fr;gap:40px;
  padding:36px 0;border-top:1px solid var(--line);
}
.record-row:last-child{border-bottom:1px solid var(--line)}
.record-index{font-size:34px;font-weight:700;color:rgba(27,106,94,.22);line-height:1;margin-bottom:12px}
.record-row h3{margin:12px 0 16px;font-size:20px}
.record-fields{display:grid;gap:14px}
.record-field{display:grid;grid-template-columns:86px 1fr;gap:16px;font-size:15px}
.record-field .lbl{color:var(--ink-500);font-size:13px;letter-spacing:.06em;padding-top:3px}
.record-field .val{color:var(--ink-700);margin:0}
.record-field .val strong{color:var(--brand-700)}

/* faq */
.faq-wrap{display:grid;grid-template-columns:340px 1fr;gap:48px;align-items:start}
.faq-aside{position:sticky;top:104px}
.faq-aside p{color:var(--ink-500);font-size:15px}
.faq-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
.faq-col{display:grid;gap:16px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  box-shadow:var(--shadow-s);overflow:hidden;position:relative;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand-600);opacity:0;transition:opacity .2s ease;
}
.faq-item.open{border-color:rgba(27,106,94,.24);box-shadow:var(--shadow-m)}
.faq-item.open::before{opacity:1}
.faq-q{
  width:100%;background:none;border:0;text-align:left;cursor:pointer;
  padding:18px 44px 18px 20px;font-size:15px;font-weight:600;color:var(--ink-900);
  font-family:inherit;line-height:1.6;position:relative;
}
.faq-q i{
  position:absolute;right:18px;top:50%;transform:translateY(-50%);
  color:var(--brand-600);font-size:13px;transition:transform .25s ease;
}
.faq-item.open .faq-q i{transform:translateY(-50%) rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease}
.faq-a-inner{padding:0 20px 20px;font-size:14px;color:var(--ink-700);line-height:1.8}

/* inquiry */
.inquiry{display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:start}
.download-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-s);margin-top:24px;
}
.download-card h3{font-size:17px;margin-bottom:8px}
.download-card p{font-size:14px;color:var(--ink-500);margin-bottom:16px}
.download-list{list-style:none;padding:0;margin:0;display:grid;gap:10px}
.download-list li{display:flex;gap:10px;font-size:14px;color:var(--ink-700)}
.download-list i{color:var(--brand-600);margin-top:5px;font-size:12px}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:32px;box-shadow:var(--shadow-s)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:grid;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:13px;color:var(--ink-700);letter-spacing:.04em}
.field input,.field select,.field textarea{
  width:100%;min-height:44px;padding:11px 14px;
  border:1px solid var(--line);border-radius:12px;background:#FDFCFA;
  font-size:15px;color:var(--ink-900);font-family:inherit;
  transition:border-color .2s ease,background .2s ease,box-shadow .2s ease;
}
.field textarea{min-height:104px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand-600);background:var(--brand-100);
  box-shadow:0 0 0 3px rgba(27,106,94,.12);
}
.field input:invalid:not(:placeholder-shown){border-color:var(--accent-500)}
.form-note{font-size:13px;color:var(--ink-500);margin:14px 0 0}

/* cta band */
.cta-band{background:var(--brand-900);padding:56px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{color:#F7F5F0;margin-bottom:8px}
.cta-inner p{color:rgba(250,248,244,.72);margin-bottom:0;font-size:15px}

/* footer */
.site-footer{background:var(--brand-900);color:rgba(250,248,244,.7);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:40px;padding-bottom:48px}
.site-footer h4{color:#F7F5F0;font-size:15px;margin-bottom:16px;letter-spacing:.02em}
.site-footer p{font-size:14px;line-height:1.8;color:rgba(250,248,244,.7);margin-bottom:16px}
.site-footer .brand{color:#F7F5F0}
.site-footer .brand:hover{color:#FFFFFF}
.footer-contact{display:grid;gap:6px;font-size:13.5px;color:rgba(250,248,244,.66)}
.footer-links{display:grid;gap:10px}
.footer-links a{color:rgba(250,248,244,.7);font-size:14px}
.footer-links a:hover{color:#F7F5F0}
.footer-note{font-size:12.5px;color:rgba(250,248,244,.55);margin:10px 0 0}
.subscribe-form{display:flex;gap:10px;margin-top:12px}
.subscribe-form input{
  flex:1 1 auto;min-width:0;min-height:42px;padding:10px 14px;
  border-radius:12px;border:1px solid rgba(250,248,244,.22);
  background:rgba(255,255,255,.06);color:#F7F5F0;font-size:14px;font-family:inherit;
}
.subscribe-form input::placeholder{color:rgba(250,248,244,.5)}
.subscribe-form input:focus{outline:none;border-color:rgba(250,248,244,.6);background:rgba(255,255,255,.12)}
.footer-bottom{
  border-top:1px solid rgba(250,248,244,.14);padding:20px 0 28px;
  display:flex;flex-wrap:wrap;gap:14px 28px;justify-content:space-between;
  font-size:13px;color:rgba(250,248,244,.6);
}
.footer-bottom a{color:rgba(250,248,244,.7)}
.footer-bottom a:hover{color:#F7F5F0}

/* responsive */
@media (max-width:1199.98px){
  :root{--sec-space:72px}
  .hero-inner{gap:40px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-aside{position:static}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
}
@media (max-width:991.98px){
  .nav-tabs-wrap{display:none}
  .nav-link-quiet{display:none}
  .nav-toggle{display:grid}
  .hero{padding:40px 0 56px}
  .hero-inner{grid-template-columns:1fr}
  .hero-media{order:-1}
  .hero-float{left:12px;bottom:-20px;min-width:172px}
  .stat-bar{grid-template-columns:repeat(2,1fr)}
  .stat-cell:nth-child(2){border-right:0}
  .stat-cell:nth-child(1),.stat-cell:nth-child(2){border-bottom:1px solid var(--line)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .inquiry{grid-template-columns:1fr}
  .record-row{grid-template-columns:1fr;gap:20px}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:767.98px){
  :root{--sec-space:56px}
  .container,.container-wide{padding-left:16px;padding-right:16px}
  .faq-grid{grid-template-columns:1fr}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .form-card{padding:24px 20px}
  .form-grid{grid-template-columns:1fr}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-inner .btn{width:100%}
  .tl-item{padding-left:64px}
  .tl-dot{width:42px;height:42px;font-size:15px}
  .timeline::before{left:20px}
  .record-field{grid-template-columns:1fr;gap:4px}
}
@media (max-width:575.98px){
  .stat-bar{grid-template-columns:1fr}
  .stat-cell{border-right:0;border-bottom:1px solid var(--line);padding:20px}
  .stat-cell:last-child{border-bottom:0}
  .grid-4{grid-template-columns:1fr}
  .hero-float{position:static;margin-top:16px;left:auto;bottom:auto}
  .footer-grid{grid-template-columns:1fr}
  .subscribe-form{flex-direction:column}
  .subscribe-form .btn{width:100%}
}