/* roulang page: index */
:root{
  --c-ink:#0E0F11;
  --c-ink-2:#1B1D21;
  --c-line-dark:#26282C;
  --c-paper:#F7F4EE;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD5;
  --c-primary:#FF4E1A;
  --c-primary-deep:#DB3A0B;
  --c-accent:#0FC7A8;
  --c-highlight:#DFF24B;
  --t-main:#16181C;
  --t-sub:#5C5850;
  --t-weak:#8A857B;
  --t-invert:#F7F4EE;
  --t-invert-weak:#A8A49C;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --shadow-1:0 1px 0 rgba(14,15,17,.04);
  --shadow-2:0 12px 32px -12px rgba(14,15,17,.18);
  --ease:cubic-bezier(.2,.7,.2,1);
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.8;
  color:var(--t-main);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto;border-style:none}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary)}
button{font-family:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
h1,h2,h3,h4{margin:0;font-family:var(--font)}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;border-radius:4px}
::selection{background:var(--c-highlight);color:var(--c-ink)}

/* ---------- container ---------- */
.container,
.container-fluid{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
@media(max-width:575.98px){
  .container,.container-fluid{padding-left:16px;padding-right:16px}
}

/* ---------- type ---------- */
h1,.h1{font-size:clamp(2.25rem,6vw,4.25rem);font-weight:800;line-height:1.05;letter-spacing:-.03em}
h2,.h2{font-size:clamp(1.625rem,3.2vw,2.6rem);font-weight:700;line-height:1.15;letter-spacing:-.02em}
h3,.h3{font-size:clamp(1.125rem,2vw,1.375rem);font-weight:600;line-height:1.35;letter-spacing:-.01em}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.meta{font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--t-weak)}
.lead{font-size:clamp(1rem,1.4vw,1.1875rem);line-height:1.8;color:var(--t-sub)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  font-family:var(--font);
  font-weight:600;
  font-size:15px;
  line-height:1;
  border-radius:var(--r-btn);
  border:1px solid transparent;
  padding:0 22px;
  height:44px;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
  white-space:nowrap;
}
.btn i{transition:transform .18s var(--ease);font-size:.85em}
.btn:hover i{transform:translateX(4px)}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-primary{
  background:var(--c-primary);
  border-color:var(--c-primary);
  color:#fff;
}
.btn-primary:hover,.btn-primary:focus{
  background:var(--c-primary-deep);
  border-color:var(--c-primary-deep);
  color:#fff;
  transform:translateY(-1px);
}
.btn-outline-ink{
  background:transparent;
  border:1px solid var(--c-ink);
  color:var(--c-ink);
}
.btn-outline-ink:hover,.btn-outline-ink:focus{
  background:transparent;
  border-color:var(--c-primary);
  color:var(--c-primary);
  transform:translateY(-1px);
}
.btn-ghost-light{
  background:transparent;
  border:1px solid rgba(247,244,238,.35);
  color:var(--t-invert);
}
.btn-ghost-light:hover,.btn-ghost-light:focus{
  background:transparent;
  border-color:var(--c-primary);
  color:#fff;
  transform:translateY(-1px);
}

/* ---------- badges ---------- */
.badge-cat{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  background:rgba(15,199,168,.12);
  color:#0A8E79;
  border:1px solid rgba(15,199,168,.32);
}
.badge-hot{
  display:inline-flex;
  align-items:center;
  padding:4px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  background:var(--c-highlight);
  color:var(--c-ink);
}

/* ---------- header ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:1030;
  background:rgba(247,244,238,.86);
  border-bottom:1px solid transparent;
  transition:background-color .25s var(--ease),border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-stuck{
  background:var(--c-paper);
  border-bottom-color:var(--c-line);
  box-shadow:0 1px 0 rgba(14,15,17,.04),0 10px 24px -20px rgba(14,15,17,.35);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;
  border-radius:10px;
  background:var(--c-ink);
  color:var(--c-highlight);
  font-weight:800;
  font-size:19px;
  display:flex;align-items:center;justify-content:center;
  letter-spacing:0;
  flex:0 0 38px;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--t-main)}
.brand-text em{
  font-style:normal;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--t-weak);
}
.main-nav{display:flex;align-items:center;gap:4px}
.main-nav a{
  position:relative;
  padding:8px 14px;
  font-size:15px;
  font-weight:500;
  color:var(--t-sub);
  border-radius:8px;
  transition:color .2s var(--ease);
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:14px;right:14px;bottom:2px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.main-nav a:hover{color:var(--t-main)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--t-main);font-weight:700}
.main-nav a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:12px}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:var(--c-surface);
  color:var(--t-main);
  align-items:center;justify-content:center;
  font-size:17px;
}
.drawer{
  position:fixed;
  top:72px;left:0;right:0;
  background:var(--c-paper);
  border-bottom:1px solid var(--c-line);
  padding:12px 0 20px;
  transform:translateY(-12px);
  opacity:0;
  visibility:hidden;
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
  z-index:1029;
  box-shadow:0 20px 40px -28px rgba(14,15,17,.4);
}
.drawer.is-open{opacity:1;visibility:visible;transform:translateY(0)}
.drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
  border-bottom:1px solid var(--c-line);
  font-size:16px;
  font-weight:600;
  color:var(--t-main);
}
.drawer a:last-child{border-bottom:0}
.drawer a i{color:var(--t-weak);font-size:13px}
.drawer a.active{color:var(--c-primary)}

/* ---------- mobile tab ---------- */
.mobile-tab{
  display:none;
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1035;
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -20px rgba(14,15,17,.4);
}
.mobile-tab a{
  position:relative;
  flex:1 1 0;
  min-width:0;
  height:60px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  font-size:12px;
  color:var(--t-weak);
  transition:color .2s var(--ease);
}
.mobile-tab a i{font-size:16px}
.mobile-tab a span{
  display:block;
  max-width:100%;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  letter-spacing:.02em;
}
.mobile-tab a::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  width:26px;height:2px;
  background:var(--c-primary);
  transform:translateX(-50%) scaleX(0);
  transition:transform .2s var(--ease);
}
.mobile-tab a.active{color:var(--c-primary);font-weight:700}
.mobile-tab a.active::before{transform:translateX(-50%) scaleX(1)}

/* ---------- layout helpers ---------- */
.section{padding:96px 0}
.section-dark{background:var(--c-ink);color:var(--t-invert)}
.section-dark .lead{color:var(--t-invert-weak)}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.section-head{max-width:760px;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}
.section-num{
  display:inline-block;
  font-family:var(--mono);
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--c-primary);
  margin-bottom:14px;
}
.section-dark .section-num{color:var(--c-highlight)}
.section-head h2{margin-bottom:16px}
.section-head p{margin:0;color:var(--t-sub);font-size:16px}
.section-dark .section-head p{color:var(--t-invert-weak)}
.hairline{height:1px;background:var(--c-line);border:0;margin:0}

/* ---------- hero ---------- */
.hero{padding:132px 0 0;position:relative}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
}
.hero-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--t-weak);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  border-radius:999px;
  padding:6px 14px;
  margin-bottom:26px;
}
.hero-eyebrow i{color:var(--c-primary);font-size:11px}
.hero h1{margin-bottom:22px;color:var(--t-main)}
.hl{position:relative;display:inline-block;white-space:nowrap}
.hl::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:.06em;
  height:3px;
  background:var(--c-highlight);
  z-index:-1;
}
.hero-sub{font-size:clamp(1rem,1.5vw,1.1875rem);line-height:1.8;color:var(--t-sub);max-width:36em;margin-bottom:32px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-note{
  display:flex;align-items:flex-start;gap:10px;
  font-size:14px;color:var(--t-weak);
  border-top:1px solid var(--c-line);
  padding-top:18px;
  max-width:34em;
}
.hero-note i{color:var(--c-accent);margin-top:4px}
.hero-media{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:4/5;
  border:1px solid var(--c-line);
  background:var(--c-ink-2);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,15,17,0) 40%,rgba(14,15,17,.55) 100%);
  pointer-events:none;
}
.hero-badge{
  position:absolute;
  z-index:2;
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:7px 14px;
  border-radius:999px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--t-main);
  box-shadow:var(--shadow-2);
}
.hero-badge i{font-size:11px;color:var(--c-primary)}
.hero-badge.b1{top:20px;left:20px}
.hero-badge.b2{top:76px;right:16px}
.hero-badge.b3{bottom:20px;left:20px}
.hero-badge.b3 i{color:var(--c-accent)}

/* ---------- metric bar ---------- */
.metric-bar{background:var(--c-ink);color:var(--t-invert);margin-top:72px;padding:32px 0}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.metric-item{position:relative;padding-left:22px}
.metric-item::before{
  content:"";
  position:absolute;left:0;top:6px;bottom:6px;width:2px;
  background:var(--c-primary);
}
.metric-item strong{
  display:block;
  font-family:var(--mono);
  font-size:clamp(1.5rem,3vw,2.125rem);
  font-weight:700;
  line-height:1.1;
  color:#fff;
  letter-spacing:-.02em;
}
.metric-item span{display:block;font-size:13px;letter-spacing:.06em;color:var(--t-invert-weak);margin-top:6px}

/* ---------- feature rows ---------- */
.feature-row{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:48px;
  align-items:center;
  padding:56px 0;
  border-bottom:1px solid var(--c-line);
}
.feature-row:first-of-type{padding-top:0}
.feature-row:last-of-type{border-bottom:0}
.feature-row.rev{grid-template-columns:5fr 7fr}
.feature-row.rev .feature-media{order:-1}
.feature-media{
  border-radius:var(--r-img);
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--c-line);
  background:var(--c-ink-2);
}
.feature-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.feature-row:hover .feature-media img{transform:scale(1.03)}
.feature-num{
  font-family:var(--mono);
  font-size:13px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--c-primary);
  display:block;
  margin-bottom:12px;
}
.feature-body h3{margin-bottom:14px}
.feature-body p{color:var(--t-sub);margin-bottom:18px}
.arrow-chain{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink);
}
.arrow-chain i{color:var(--c-primary);transition:transform .18s var(--ease)}
.arrow-chain:hover{color:var(--c-primary)}
.arrow-chain:hover i{transform:translateX(4px)}

/* ---------- steps ---------- */
.steps{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding-top:34px;
}
.steps::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;height:2px;
  background:var(--c-line);
}
.steps::after{
  content:"";
  position:absolute;
  top:0;left:0;height:2px;
  width:38%;
  background:var(--c-primary);
}
.step{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:24px 22px 26px;
  transition:border-color .2s var(--ease),box-shadow .3s var(--ease);
}
.step:hover{border-color:var(--c-ink);box-shadow:var(--shadow-2)}
.step-idx{
  font-family:var(--mono);
  font-size:13px;
  letter-spacing:.12em;
  color:var(--c-primary);
  display:block;
  margin-bottom:14px;
}
.step h3{font-size:1.0625rem;margin-bottom:10px}
.step p{font-size:14px;color:var(--t-sub);margin:0 0 18px}
.step-thumb{
  border-radius:10px;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--c-line);
}
.step-thumb img{width:100%;height:100%;object-fit:cover}

/* ---------- cases ---------- */
.cases{
  display:grid;
  grid-template-columns:7fr 5fr;
  grid-template-rows:auto auto;
  gap:24px;
}
.case-large{
  grid-row:1 / span 2;
  background:var(--c-ink);
  color:var(--t-invert);
  border-radius:var(--r-card);
  padding:44px 40px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
  border:1px solid var(--c-line-dark);
}
.case-large .quote-mark{font-size:44px;line-height:1;color:var(--c-primary);font-family:Georgia,serif;margin-bottom:20px}
.case-large blockquote{margin:0 0 28px;font-size:clamp(1.0625rem,2vw,1.375rem);line-height:1.65;font-weight:500;color:#fff}
.case-large .sign{font-size:13px;letter-spacing:.06em;color:var(--t-invert-weak);font-family:var(--mono)}
.case-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;border-top:1px solid var(--c-line-dark);padding-top:24px;margin-top:28px}
.case-stats strong{display:block;font-family:var(--mono);font-size:1.375rem;color:var(--c-highlight);line-height:1.2}
.case-stats span{display:block;font-size:12px;letter-spacing:.06em;color:var(--t-invert-weak);margin-top:6px}
.case-small{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px 26px;
  transition:border-color .2s var(--ease),box-shadow .3s var(--ease);
}
.case-small:hover{border-color:var(--c-ink);box-shadow:var(--shadow-2)}
.case-small h3{font-size:1.0625rem;margin-bottom:10px}
.case-small p{font-size:14px;color:var(--t-sub);margin:0 0 16px}
.case-small .sign{font-size:12px;letter-spacing:.06em;color:var(--t-weak);font-family:var(--mono)}

/* ---------- price ---------- */
.price-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
  align-items:start;
}
.price-card{
  position:relative;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:34px 30px 32px;
  transition:border-color .2s var(--ease),box-shadow .3s var(--ease);
}
.price-card:hover{border-color:var(--c-ink);box-shadow:var(--shadow-2)}
.price-card.featured{
  border:2px solid var(--c-ink);
  transform:translateY(-12px);
  box-shadow:var(--shadow-2);
}
.price-tag{
  position:absolute;
  top:-13px;left:30px;
  background:var(--c-highlight);
  color:var(--c-ink);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  padding:4px 12px;
  border-radius:999px;
}
.price-card h3{font-size:1.125rem;margin-bottom:10px}
.price-desc{font-size:14px;color:var(--t-sub);margin-bottom:22px;min-height:48px}
.price-value{
  display:flex;
  align-items:baseline;
  gap:8px;
  padding-bottom:22px;
  margin-bottom:22px;
  border-bottom:1px solid var(--c-line);
}
.price-value strong{font-family:var(--mono);font-size:2rem;font-weight:700;letter-spacing:-.02em;line-height:1}
.price-value span{font-size:13px;color:var(--t-weak)}
.price-list li{
  display:flex;
  align-items:flex-start;
  gap:10px;
  font-size:14px;
  color:var(--t-sub);
  padding:8px 0;
}
.price-list li i{color:var(--c-accent);font-size:13px;margin-top:6px;flex:0 0 auto}
.price-card .btn{width:100%;margin-top:24px}

/* ---------- news ---------- */
.news-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:44px;
  flex-wrap:wrap;
}
.news-head .section-head{margin-bottom:0}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
  padding-bottom:4px;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.text-link i{transition:transform .18s var(--ease);color:var(--c-primary);font-size:12px}
.text-link:hover{color:var(--c-primary);border-color:var(--c-primary)}
.text-link:hover i{transform:translateX(4px)}
.news-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.news-card{
  display:flex;
  flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .3s var(--ease);
}
.news-card:hover{border-color:var(--c-ink);box-shadow:var(--shadow-2)}
.news-card .thumb{
  aspect-ratio:16/10;
  overflow:hidden;
  border-bottom:1px solid var(--c-line);
  background:var(--c-ink-2);
}
.news-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.news-card:hover .thumb img{transform:scale(1.03)}
.news-card .card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.news-card .badge-cat{align-self:flex-start;margin-bottom:14px}
.news-card h3{font-size:1.0625rem;margin-bottom:10px;line-height:1.45}
.news-card h3 a{
  background-image:linear-gradient(var(--c-primary),var(--c-primary));
  background-size:0 2px;
  background-position:0 100%;
  background-repeat:no-repeat;
  transition:background-size .2s var(--ease),color .2s var(--ease);
  display:inline;
}
.news-card:hover h3 a{background-size:100% 2px}
.news-card .excerpt{
  font-size:14px;
  color:var(--t-sub);
  line-height:1.7;
  margin:0 0 18px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card .card-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  border-top:1px solid var(--c-line);
  padding-top:14px;
  font-family:var(--mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--t-weak);
}
.news-card .card-foot i{color:var(--c-primary);font-size:11px}
.empty-state{
  grid-column:1 / -1;
  min-height:200px;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  border:1px dashed var(--c-line);
  border-radius:var(--r-card);
  background:var(--c-surface);
  padding:40px 24px;
  text-align:center;
}
.empty-state i{font-size:28px;color:var(--t-weak)}
.empty-state p{margin:0;color:var(--t-sub);font-size:15px}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px}
.accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--c-line);
  border-radius:0;
}
.accordion-item:first-of-type{border-top:1px solid var(--c-line)}
.accordion-button{
  background:transparent;
  box-shadow:none;
  color:var(--t-main);
  font-size:clamp(1rem,1.6vw,1.125rem);
  font-weight:600;
  padding:24px 0;
  border-radius:0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  width:100%;
}
.accordion-button:not(.collapsed){
  color:var(--c-primary);
  background:transparent;
  box-shadow:none;
}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:-2px}
.accordion-button::after{display:none}
.acc-icon{
  position:relative;
  flex:0 0 20px;
  width:20px;height:20px;
  color:currentColor;
}
.acc-icon::before,
.acc-icon::after{
  content:"";
  position:absolute;
  background:currentColor;
  transition:transform .18s var(--ease);
}
.acc-icon::before{left:0;right:0;top:9px;height:2px}
.acc-icon::after{top:0;bottom:0;left:9px;width:2px}
.accordion-button:not(.collapsed) .acc-icon::after{transform:scaleY(0)}
.accordion-body{
  padding:0 0 26px 0;
  color:var(--t-sub);
  font-size:15px;
  line-height:1.85;
}
.accordion-collapse.show .accordion-body,
.accordion-collapse.collapsing .accordion-body{
  border-left:2px solid var(--c-primary);
  padding-left:20px;
}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;
  background:var(--c-ink);
  color:var(--t-invert);
  padding:88px 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(247,244,238,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(247,244,238,.045) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cta-band::after{
  content:"";
  position:absolute;
  top:-120px;right:-80px;
  width:420px;height:420px;
  background:repeating-linear-gradient(135deg,rgba(255,78,26,.14) 0 2px,transparent 2px 16px);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.cta-inner h2{margin-bottom:16px;color:#fff}
.cta-inner p{margin:0;color:var(--t-invert-weak);max-width:44em}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:var(--t-invert);padding:64px 0 0}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
  border-bottom:1px solid var(--c-line-dark);
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.footer-brand .brand-mark{background:var(--c-primary);color:#fff}
.footer-brand strong{font-size:16px;font-weight:800;color:#fff}
.footer-brand em{display:block;font-style:normal;font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--t-invert-weak)}
.footer-desc{font-size:14px;line-height:1.8;color:var(--t-invert-weak);max-width:34em;margin:0}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.1em;
  color:#fff;
  margin-bottom:18px;
}
.footer-col li{margin-bottom:12px}
.footer-col a{
  font-size:14px;
  color:var(--t-invert-weak);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-col a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  flex-wrap:wrap;
  padding:26px 0 34px;
  font-size:13px;
  color:var(--t-invert-weak);
}
.footer-bottom .legal{display:flex;gap:20px;flex-wrap:wrap}
.footer-bottom .legal span{cursor:default}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .24s var(--ease),transform .24s var(--ease);
}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media(max-width:1199.98px){
  .container,.container-fluid{max-width:1040px}
}
@media(max-width:991.98px){
  body{padding-bottom:calc(62px + env(safe-area-inset-bottom))}
  .section{padding:72px 0}
  .hero{padding:104px 0 0}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{aspect-ratio:16/12;max-width:560px}
  .main-nav,.header-actions .nav-cta{display:none}
  .menu-toggle{display:flex}
  .feature-row,
  .feature-row.rev{grid-template-columns:1fr;gap:26px;padding:40px 0}
  .feature-row.rev .feature-media{order:0}
  .feature-media{aspect-ratio:16/10}
  .cases{grid-template-columns:1fr;grid-template-rows:auto}
  .case-large{grid-row:auto}
  .price-grid{grid-template-columns:1fr;gap:20px}
  .price-card.featured{transform:none}
  .news-grid{grid-template-columns:repeat(2,1fr)}
  .metric-grid{grid-template-columns:repeat(2,1fr);gap:20px 16px}
  .cta-inner{grid-template-columns:1fr;gap:28px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .mobile-tab{display:flex}
  .steps{padding-top:26px}
}
@media(max-width:767.98px){
  .section{padding:56px 0}
  .hero{padding:92px 0 0}
  .metric-bar{margin-top:48px;padding:26px 0}
  .section-head{margin-bottom:36px}
  .steps{
    display:flex;
    overflow-x:auto;
    scroll-snap-type:x mandatory;
    gap:16px;
    padding:26px 16px 8px;
    margin-left:-16px;
    margin-right:-16px;
    -webkit-overflow-scrolling:touch;
  }
  .steps::-webkit-scrollbar{height:4px}
  .steps::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:999px}
  .step{flex:0 0 78%;scroll-snap-align:start}
  .news-grid{grid-template-columns:1fr}
  .case-stats{grid-template-columns:1fr;gap:14px}
  .cta-band{padding:64px 0}
  .footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:14px}
  .hero-badge.b2{top:auto;bottom:76px;right:16px}
}
@media(max-width:575.98px){
  .hero-cta .btn{width:100%}
  .hero-media{aspect-ratio:4/3}
  .price-card{padding:28px 22px}
  .case-large{padding:32px 24px}
  .cta-actions .btn{width:100%}
}
@media(min-width:1400px){
  .container,.container-fluid{max-width:1240px}
}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .feature-row:hover .feature-media img,
  .news-card:hover .thumb img{transform:none}
}

/* roulang page: article */
/* ================= 设计变量 ================= */
:root{
  --c-ink:#0E0F11;
  --c-ink-2:#1B1D21;
  --c-line-dark:#26282C;
  --c-paper:#F7F4EE;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD5;
  --c-primary:#FF4E1A;
  --c-primary-deep:#DB3A0B;
  --c-accent:#0FC7A8;
  --c-highlight:#DFF24B;
  --t-1:#16181C;
  --t-2:#5C5850;
  --t-3:#8A857B;
  --t-inv:#F7F4EE;
  --t-inv-2:#A8A49C;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 0 rgba(14,15,17,.04);
  --sh-2:0 12px 32px -12px rgba(14,15,17,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --gutter:24px;
  --container:1240px;
}

/* ================= 基础重置 ================= */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-paper);
  color:var(--t-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease,background-size .2s ease}
button,input,textarea,select{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding-left:0}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
::selection{background:var(--c-primary);color:#fff}

/* ================= 容器与通用 ================= */
.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding-left:var(--gutter);
  padding-right:var(--gutter);
}
.section{padding:96px 0}
.section-dark{background:var(--c-ink);color:var(--t-inv)}
.section-head{max-width:720px;margin-bottom:44px}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.18em;
  color:var(--c-primary);
  text-transform:uppercase;
}
.section-head h2{
  font-size:clamp(1.625rem,3.2vw,2.6rem);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.02em;
  margin:14px 0 14px;
}
.section-head p{color:var(--t-2)}
.section-dark .section-head p{color:var(--t-inv-2)}
.rule{height:1px;border:0;background:var(--c-line);margin:56px 0}

/* ================= 按钮 ================= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:700;
  letter-spacing:.01em;
  line-height:1;
  cursor:pointer;
  background-color:transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn i{transition:transform .18s ease}
.btn:hover i{transform:translateX(4px)}
.btn-lg{height:52px;padding:0 28px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-primary{
  background-color:var(--c-primary);
  background-image:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;
  border-color:var(--c-primary);
}
.btn-primary:hover,
.btn-primary:focus{background-image:none;background-color:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-1px)}
.btn-outline{background-color:transparent;border-color:var(--c-ink);color:var(--c-ink)}
.btn-outline:hover,.btn-outline:focus{background-color:transparent;border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.btn-ghost{background-color:transparent;border-color:rgba(247,244,238,.35);color:var(--t-inv)}
.btn-ghost:hover,.btn-ghost:focus{background-color:transparent;border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}

/* ================= 徽章 ================= */
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1.5;
}
.badge-accent{background:rgba(15,199,168,.12);color:#0A7A68;border:1px solid rgba(15,199,168,.35)}
.badge-highlight{background:var(--c-highlight);color:var(--c-ink);border:1px solid var(--c-highlight)}
.badge-outline{background:transparent;border:1px solid var(--c-line);color:var(--t-2)}

/* ================= 顶部导航 ================= */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,244,238,.94);
  border-bottom:1px solid var(--c-line);
  transition:background-color .2s ease,box-shadow .2s ease;
}
.site-header.is-scrolled{background:var(--c-paper);box-shadow:var(--sh-1)}
.header-inner{
  display:flex;
  align-items:center;
  gap:20px;
  height:72px;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{
  width:36px;height:36px;
  display:grid;place-items:center;
  border-radius:10px;
  background:var(--c-ink);
  color:var(--c-highlight);
  font-family:var(--font-mono);
  font-weight:700;
  font-size:17px;
}
.brand-text strong{display:block;font-size:15px;font-weight:800;line-height:1.25;letter-spacing:-.01em}
.brand-text em{
  display:block;
  font-style:normal;
  font-size:11px;
  line-height:1.4;
  color:var(--t-3);
  letter-spacing:.14em;
  font-family:var(--font-mono);
}
.main-nav{display:none}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-toggle{
  width:42px;height:42px;
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  cursor:pointer;
  color:var(--c-ink);
}
.nav-toggle:hover{border-color:var(--c-ink)}
@media (min-width:992px){
  .main-nav{
    display:flex;
    align-items:center;
    gap:28px;
    margin-left:auto;
  }
  .main-nav a{
    position:relative;
    padding:6px 0;
    font-size:15px;
    color:var(--t-2);
  }
  .main-nav a::after{
    content:"";
    position:absolute;
    left:0;bottom:-2px;
    width:0;height:2px;
    background:var(--c-primary);
    transition:width .2s ease;
  }
  .main-nav a:hover{color:var(--c-ink)}
  .main-nav a:hover::after{width:100%}
  .main-nav a.active{color:var(--c-primary)}
  .main-nav a.active::after{width:100%}
  .nav-actions{margin-left:0}
  .nav-toggle{display:none}
}

/* 移动抽屉 */
.mobile-drawer{
  position:fixed;
  left:0;right:0;top:72px;
  z-index:1035;
  padding:8px 0 20px;
  background:var(--c-surface);
  border-bottom:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
}
.mobile-drawer.open{opacity:1;visibility:visible;transform:none}
.mobile-drawer .container{display:grid;gap:0}
.mobile-drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 2px;
  font-size:15px;
  border-bottom:1px solid var(--c-line);
  color:var(--t-1);
}
.mobile-drawer a:hover{color:var(--c-primary)}
.mobile-drawer a i{color:var(--c-primary);font-size:13px}
@media (min-width:992px){.mobile-drawer{display:none}}

/* ================= 移动底部 Tab ================= */
.mobile-tabbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
}
.mobile-tabbar a{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  padding:8px 2px 9px;
  font-size:11px;
  color:var(--t-3);
  letter-spacing:.02em;
}
.mobile-tabbar a i{font-size:17px}
.mobile-tabbar a.active{color:var(--c-primary)}
.mobile-tabbar a.active::before{
  content:"";
  position:absolute;
  top:0;left:20%;right:20%;
  height:2px;
  background:var(--c-primary);
}
@media (min-width:992px){.mobile-tabbar{display:none}}
@media (max-width:991.98px){body{padding-bottom:72px}}

/* ================= 面包屑 ================= */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--t-3);
}
.crumbs a:hover{color:var(--c-primary)}
.crumbs .sep{color:#C9C3B6}
.crumbs .current{
  color:var(--t-1);
  max-width:56vw;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ================= 文章头部 ================= */
.article-head-wrap{padding:36px 0 0}
.article-head{margin-top:26px}
.article-head h1{
  font-size:clamp(1.75rem,4vw,2.5rem);
  font-weight:800;
  line-height:1.22;
  letter-spacing:-.02em;
  margin:16px 0 16px;
  max-width:900px;
}
.meta-row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 22px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  color:var(--t-3);
}
.meta-row .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line);display:inline-block}
.cover-wrap{
  margin-top:30px;
  aspect-ratio:16/9;
  border:1px solid var(--c-line);
  border-radius:var(--r-img);
  overflow:hidden;
  background:#EDE8DF;
}
.cover-wrap img{width:100%;height:100%;object-fit:cover}

/* ================= 文章布局 ================= */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:44px;
  padding:52px 0 0;
}
.article-main{max-width:760px}
@media (min-width:1200px){
  .article-layout{grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}
}

/* 正文排版 */
.article-body{font-size:17px;line-height:1.9;color:#22242A}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:clamp(1.375rem,2.4vw,1.75rem);
  font-weight:700;
  line-height:1.25;
  letter-spacing:-.02em;
  margin:40px 0 16px;
}
.article-body h3{font-size:1.125rem;font-weight:600;line-height:1.35;margin:28px 0 12px}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body li{margin-bottom:.45em}
.article-body blockquote{
  margin:26px 0;
  padding:14px 20px;
  border-left:3px solid var(--c-primary);
  background:rgba(255,78,26,.05);
  color:var(--t-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--r-img);margin:26px auto}
.article-body figure img{margin-bottom:10px}
.article-body figcaption{
  font-size:13px;
  text-align:center;
  color:var(--t-3);
  font-family:var(--font-mono);
}
.article-body a{color:var(--c-primary-deep);border-bottom:1px solid rgba(219,58,11,.3)}
.article-body a:hover{border-bottom-color:var(--c-primary)}
.article-body code{
  font-family:var(--font-mono);
  font-size:.9em;
  padding:2px 6px;
  border-radius:6px;
  background:#EFEAE0;
}
.article-body pre{
  overflow-x:auto;
  padding:18px 20px;
  border-radius:var(--r-card);
  background:var(--c-ink);
  color:var(--t-inv);
  font-size:14px;
}
.article-body pre code{background:transparent;color:inherit;padding:0}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0}
.article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 12px;text-align:left}
.article-body th{background:#F1ECE3;font-weight:700}
.article-body hr{border:0;height:1px;background:var(--c-line);margin:36px 0}

/* 空态 */
.empty-state{
  display:grid;
  place-items:center;
  align-content:center;
  gap:12px;
  min-height:220px;
  padding:40px 24px;
  text-align:center;
  background:var(--c-surface);
  border:1px dashed var(--c-line);
  border-radius:var(--r-card);
}
.empty-state i{font-size:28px;color:var(--t-3)}
.empty-state p{color:var(--t-2);margin:0}

/* 文末操作 */
.article-foot{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin-top:44px;
  padding-top:24px;
  border-top:1px solid var(--c-line);
}
.article-foot .back-top{font-size:14px;color:var(--t-2);display:inline-flex;align-items:center;gap:6px}
.article-foot .back-top:hover{color:var(--c-primary)}

/* ================= 侧栏 ================= */
.aside{display:grid;gap:20px}
@media (min-width:1200px){.aside{position:sticky;top:96px}}
.aside-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px;
  box-shadow:var(--sh-1);
}
.aside-card h3{font-size:1rem;font-weight:700;letter-spacing:-.01em;margin-bottom:12px}
.aside-card .aside-note{font-size:14px;color:var(--t-2);margin:0 0 14px}
.aside-list{list-style:none;margin:0;padding:0}
.aside-list li{border-top:1px solid var(--c-line)}
.aside-list li:first-child{border-top:0}
.aside-list a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:11px 0;
  font-size:14px;
  color:var(--t-2);
  transition:color .18s ease,padding-left .18s ease;
}
.aside-list a:hover{color:var(--c-primary);padding-left:4px}
.aside-list a i{font-size:12px;color:var(--c-primary)}
.check-list{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.check-list li{display:flex;gap:10px;font-size:14px;color:var(--t-2);line-height:1.7}
.check-list li::before{content:"✓";color:var(--c-accent);font-weight:700;flex:0 0 auto}
.aside-card-accent{background:var(--c-ink);border-color:var(--c-ink);color:var(--t-inv)}
.aside-card-accent h3{color:#fff}
.aside-card-accent .aside-note{color:var(--t-inv-2)}

/* ================= 卡片 ================= */
.card{
  display:flex;
  flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease;
  height:100%;
}
.card:hover{border-color:var(--c-ink);box-shadow:var(--sh-2)}
.card-media{aspect-ratio:16/10;overflow:hidden;background:#EDE8DF}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px 22px 24px;display:flex;flex-direction:column;flex:1 1 auto}
.card-body h3{
  font-size:1.0625rem;
  font-weight:600;
  line-height:1.45;
  margin:10px 0 8px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.card-body h3 a{
  background-image:linear-gradient(var(--c-primary),var(--c-primary));
  background-repeat:no-repeat;
  background-size:0 2px;
  background-position:0 100%;
  transition:background-size .2s ease;
}
.card-body h3 a:hover{background-size:100% 2px}
.card-excerpt{
  font-size:14px;
  line-height:1.8;
  color:var(--t-2);
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
  margin-bottom:16px;
}
.card-meta{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--t-3);
}
.card-meta .more{color:var(--c-primary)}

/* ================= 区块：相关推荐 ================= */
.related-section{padding:84px 0 0}
.related-grid{display:grid;grid-template-columns:1fr;gap:24px}
@media (min-width:768px){.related-grid{grid-template-columns:repeat(3,1fr)}}

/* ================= CTA 带 ================= */
.cta-band{
  position:relative;
  overflow:hidden;
  margin-top:96px;
  padding:88px 0;
  background:var(--c-ink);
  color:var(--t-inv);
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(247,244,238,.05) 0 1px,transparent 1px 18px);
  pointer-events:none;
}
.cta-band .container{position:relative;z-index:1}
.cta-band h2{
  font-size:clamp(1.75rem,4vw,3rem);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.03em;
  color:#fff;
  max-width:760px;
}
.cta-band p{color:var(--t-inv-2);margin:16px 0 0;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}

/* ================= 页脚 ================= */
.site-footer{
  background:var(--c-ink);
  color:var(--t-inv);
  padding:64px 0 28px;
  border-top:1px solid var(--c-line-dark);
}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:768px){.footer-grid{grid-template-columns:2fr 1fr 1fr}}
.footer-brand{display:flex;align-items:center;gap:12px}
.site-footer .brand-mark{background:var(--c-primary);color:#fff}
.footer-brand strong{display:block;font-size:15px;font-weight:800}
.footer-brand em{
  display:block;
  font-style:normal;
  font-size:12px;
  color:var(--t-inv-2);
  letter-spacing:.12em;
  font-family:var(--font-mono);
}
.footer-desc{color:var(--t-inv-2);font-size:14px;line-height:1.8;margin-top:18px;max-width:430px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.08em;margin-bottom:16px;color:#fff}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.footer-col a{
  font-size:14px;
  color:var(--t-inv-2);
  border-bottom:1px solid transparent;
  padding-bottom:1px;
}
.footer-col a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.footer-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid var(--c-line-dark);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--t-inv-2);
}
.footer-bottom .legal{display:flex;gap:18px}

/* ================= 入场动效 ================= */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1);
}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .reveal{transform:none;transition:opacity .2s linear}
  .card:hover .card-media img{transform:none}
  .btn:hover{transform:none}
}

/* ================= 响应式细节 ================= */
@media (max-width:991.98px){
  .section{padding:72px 0}
  .article-layout{padding-top:40px}
  .cta-band{margin-top:72px;padding:64px 0}
}
@media (max-width:575.98px){
  :root{--gutter:16px}
  .section{padding:56px 0}
  .article-head h1{font-size:1.6rem}
  .article-body{font-size:16px}
  .article-head-wrap{padding-top:24px}
  .related-section{padding-top:56px}
  .cta-actions .btn{width:100%}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap}
}

/* roulang page: category1 */
:root{
  --c-ink:#0E0F11;
  --c-ink-2:#1B1D21;
  --c-line-dark:#26282C;
  --c-paper:#F7F4EE;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD5;
  --c-primary:#FF4E1A;
  --c-primary-deep:#DB3A0B;
  --c-accent:#0FC7A8;
  --c-highlight:#DFF24B;
  --t-1:#16181C;
  --t-2:#5C5850;
  --t-3:#8A857B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 0 rgba(14,15,17,.04);
  --sh-2:0 12px 32px -12px rgba(14,15,17,.18);
  --pad-y:clamp(56px,8vw,112px);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{
  margin:0;background:var(--c-paper);color:var(--t-1);
  font-family:var(--font-sans);font-size:16px;line-height:1.8;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none;transition:color .18s ease,border-color .18s ease}
a:hover{color:var(--c-primary)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:700;letter-spacing:-.02em;color:var(--t-1)}
p{margin:0 0 1.1em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px}
::selection{background:var(--c-highlight);color:var(--c-ink)}
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.section{padding:var(--pad-y) 0}
.section-tight{padding:calc(var(--pad-y) * .7) 0}
.section-dark{background:var(--c-ink);color:#F7F4EE}
.section-dark h2,.section-dark h3{color:#F7F4EE}
.section-dark p{color:#A8A49C}

/* ---------- buttons ---------- */
.btn{
  --btn-h:44px;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:var(--btn-h);padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;line-height:1;
  border:1px solid transparent;background:transparent;cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease,box-shadow .18s ease;
  white-space:nowrap;
}
.btn i{transition:transform .18s ease}
.btn:hover i{transform:translateX(4px)}
.btn-primary{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}
.btn-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-1px)}
.btn-outline{border-color:var(--c-ink);color:var(--c-ink);background:transparent}
.btn-outline:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px)}
.btn-ghost{border-color:rgba(247,244,238,.32);color:#F7F4EE;background:transparent}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-lg{--btn-h:52px;padding:0 28px;font-size:16px}
.btn-sm{--btn-h:38px;padding:0 16px;font-size:14px}
.btn-block{width:100%}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.08em;line-height:1.4;
  background:rgba(15,199,168,.12);color:#0A7D69;border:1px solid rgba(15,199,168,.32);
}
.badge-solid{background:var(--c-highlight);color:var(--c-ink);border-color:var(--c-highlight)}
.badge-line{background:transparent;color:var(--t-2);border-color:var(--c-line)}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;
  color:var(--t-2);text-transform:uppercase;
}
.eyebrow i{color:var(--c-accent)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:var(--c-paper);
  border-bottom:1px solid var(--c-line);transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{background:#FBF9F5;box-shadow:var(--sh-1)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  width:38px;height:38px;border-radius:11px;background:var(--c-ink);color:var(--c-highlight);
  display:grid;place-items:center;font-size:19px;font-weight:800;letter-spacing:0;
}
.logo-text{display:flex;flex-direction:column;line-height:1.25}
.logo-text strong{font-size:16px;font-weight:800;letter-spacing:-.01em}
.logo-text em{font-style:normal;font-size:11px;letter-spacing:.14em;color:var(--t-3);font-family:var(--font-mono)}
.main-nav{display:none;align-items:center;gap:6px}
.main-nav a{
  position:relative;padding:8px 12px;font-size:15px;font-weight:500;color:var(--t-2);
  border-radius:8px;
}
.main-nav a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:0;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.main-nav a:hover{color:var(--t-1)}
.main-nav a:hover::after{transform:scaleX(1)}
.main-nav a.active{color:var(--c-primary);font-weight:600}
.main-nav a.active::after{transform:scaleX(1)}
.header-actions{display:flex;align-items:center;gap:10px}
.header-actions .btn-primary{display:none}
.nav-toggle{
  width:42px;height:42px;border-radius:10px;border:1px solid var(--c-line);background:var(--c-surface);
  display:grid;place-content:center;gap:4px;cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* drawer */
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(84vw,340px);z-index:90;
  background:var(--c-surface);border-left:1px solid var(--c-line);
  padding:22px 20px calc(28px + env(safe-area-inset-bottom));
  transform:translateX(102%);transition:transform .26s cubic-bezier(.2,.7,.2,1);
  display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--c-line);margin-bottom:8px}
.drawer-head strong{font-size:15px}
.drawer-close{width:36px;height:36px;border-radius:9px;border:1px solid var(--c-line);background:transparent;cursor:pointer;color:var(--t-2)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{padding:13px 4px;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--t-2)}
.drawer-nav a.active{color:var(--c-primary);font-weight:600}
.drawer .btn{margin-top:14px}
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,15,17,.42);z-index:80;
  opacity:0;visibility:hidden;transition:opacity .24s ease,visibility .24s ease;
}
.drawer-mask.open{opacity:1;visibility:visible}

/* bottom tab */
.bottom-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:grid;grid-template-columns:repeat(5,1fr);
  background:rgba(247,244,238,.97);border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  backdrop-filter:none;
}
.bottom-tab a{
  position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:3px;height:60px;font-size:11px;color:var(--t-3);letter-spacing:0;
}
.bottom-tab a i{font-size:17px}
.bottom-tab a.active{color:var(--c-primary);font-weight:600}
.bottom-tab a.active::before{content:"";position:absolute;top:0;left:18%;right:18%;height:2px;background:var(--c-primary);border-radius:0 0 2px 2px}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--c-ink);color:#F7F4EE;padding:clamp(48px,7vw,88px) 0 clamp(56px,8vw,104px)}
.hero-bg{
  position:absolute;inset:0;background-size:cover;background-position:center;
  opacity:.30;filter:grayscale(.25) contrast(1.05);
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,15,17,.86) 0%,rgba(14,15,17,.94) 62%,rgba(14,15,17,.99) 100%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:40px;align-items:center}
.hero h1{color:#F7F4EE;font-size:clamp(2.25rem,6vw,4.25rem);font-weight:800;line-height:1.06;letter-spacing:-.03em;margin:18px 0 20px}
.hero h1 .hl{position:relative;white-space:nowrap}
.hero h1 .hl::after{content:"";position:absolute;left:0;right:0;bottom:.05em;height:3px;background:var(--c-highlight)}
.hero-sub{max-width:600px;font-size:17px;line-height:1.85;color:#A8A49C;margin-bottom:30px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px}
.hero-tags span{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:#A8A49C;
  border:1px solid var(--c-line-dark);border-radius:999px;padding:6px 12px;
}
.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:13px;color:#8A857B;font-family:var(--font-mono)}
.breadcrumb-nav a{color:#A8A49C}
.breadcrumb-nav a:hover{color:var(--c-primary)}
.hero-media{position:relative}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-img);border:1px solid var(--c-line-dark)}
.float-badge{
  position:absolute;background:var(--c-surface);color:var(--c-ink);
  font-size:12px;font-weight:700;letter-spacing:.06em;
  padding:7px 12px;border-radius:999px;box-shadow:var(--sh-2);
}
.float-badge.b1{top:16px;left:-6px}
.float-badge.b2{bottom:64px;right:-6px;background:var(--c-highlight)}
.float-badge.b3{bottom:16px;left:22px;background:var(--c-ink);color:#F7F4EE}

/* ---------- stats strip ---------- */
.stats-strip{background:var(--c-surface);border-bottom:1px solid var(--c-line)}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--c-line)}
.stat{background:var(--c-surface);padding:26px 20px;display:flex;flex-direction:column;gap:6px}
.stat b{font-family:var(--font-mono);font-size:clamp(1.6rem,3vw,2.1rem);font-weight:700;letter-spacing:-.02em;color:var(--c-ink);line-height:1}
.stat span{font-size:13px;color:var(--t-3);letter-spacing:.02em}

/* ---------- section head ---------- */
.sec-head{max-width:760px;margin-bottom:clamp(32px,4vw,52px)}
.sec-head h2{font-size:clamp(1.625rem,3.2vw,2.6rem);font-weight:700;line-height:1.16;letter-spacing:-.02em;margin:14px 0 14px}
.sec-head p{color:var(--t-2);font-size:16.5px}
.sec-num{font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;color:var(--t-3)}
.sec-num b{color:var(--c-primary)}

/* ---------- split: intro + entry cards ---------- */
.split{display:grid;grid-template-columns:1fr;gap:40px}
.intro-sticky h2{font-size:clamp(1.5rem,2.8vw,2.1rem);line-height:1.2;margin:14px 0 18px}
.intro-sticky p{color:var(--t-2);font-size:16.5px}
.intro-list{margin-top:24px;border-top:1px solid var(--c-line)}
.intro-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px solid var(--c-line);font-size:15px;color:var(--t-2)}
.intro-list li i{color:var(--c-accent);font-size:14px;margin-top:6px}
.intro-list li b{color:var(--t-1);font-weight:600}

.entry-stack{display:flex;flex-direction:column;gap:16px}
.card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-1);transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
}
.card:hover{border-color:var(--c-ink);box-shadow:var(--sh-2)}
.entry-card{display:flex;gap:16px;padding:22px;align-items:flex-start}
.entry-card .idx{
  flex:0 0 auto;width:44px;height:44px;border-radius:11px;
  background:rgba(15,199,168,.1);border:1px solid rgba(15,199,168,.3);
  color:#0A7D69;display:grid;place-items:center;font-family:var(--font-mono);font-size:14px;font-weight:700;
}
.entry-card h3{font-size:1.125rem;font-weight:600;line-height:1.35;margin-bottom:8px}
.entry-card p{color:var(--t-2);font-size:15px;margin-bottom:10px}
.entry-card .link{font-size:13px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.entry-card .link i{font-size:11px;transition:transform .18s ease}
.entry-card:hover .link i{transform:translateX(4px)}

/* ---------- scenario steps ---------- */
.progress-line{height:2px;background:var(--c-line);position:relative;margin-bottom:36px}
.progress-line::before{content:"";position:absolute;left:0;top:0;height:2px;width:34%;background:var(--c-primary)}
.scene-grid{display:grid;grid-template-columns:1fr;gap:24px}
.scene{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-1);transition:border-color .2s ease,box-shadow .2s ease;
}
.scene:hover{border-color:var(--c-primary);box-shadow:var(--sh-2)}
.scene .num{font-family:var(--font-mono);font-size:13px;color:var(--c-primary);letter-spacing:.1em}
.scene h3{font-size:1.125rem;font-weight:600;margin:12px 0 8px}
.scene p{color:var(--t-2);font-size:14.5px;line-height:1.75}
.scene .thumb{margin-top:16px;border-radius:var(--r-img);overflow:hidden;border:1px solid var(--c-line)}
.scene .thumb img{aspect-ratio:16/10;object-fit:cover;width:100%;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.scene:hover .thumb img{transform:scale(1.03)}

/* ---------- process ---------- */
.process{display:grid;grid-template-columns:1fr;gap:36px}
.process-sticky h2{font-size:clamp(1.5rem,2.8vw,2.1rem);line-height:1.2;margin:14px 0 16px}
.process-sticky p{color:var(--t-2);font-size:16px}
.process-count{display:flex;align-items:baseline;gap:10px;margin-top:22px;font-family:var(--font-mono)}
.process-count b{font-size:2.6rem;font-weight:700;color:var(--c-primary);line-height:1}
.process-count span{font-size:13px;color:var(--t-3);letter-spacing:.08em}
.step-list{display:flex;flex-direction:column}
.step-item{display:grid;grid-template-columns:auto 1fr;gap:20px;padding:26px 0;border-top:1px solid var(--c-line)}
.step-item:last-child{border-bottom:1px solid var(--c-line)}
.step-item .no{
  font-family:var(--font-mono);font-size:15px;font-weight:700;color:var(--c-ink);
  width:46px;height:46px;border-radius:12px;border:1px solid var(--c-line);background:var(--c-surface);
  display:grid;place-items:center;
}
.step-item h3{font-size:1.2rem;font-weight:600;margin-bottom:8px}
.step-item p{color:var(--t-2);font-size:15.5px;margin:0}
.step-item .tip{display:inline-block;margin-top:10px;font-size:13px;color:#0A7D69;font-family:var(--font-mono)}

/* ---------- faq ---------- */
.faq-wrap{background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line)}
.accordion-item:last-child{border-bottom:0}
.accordion-button{
  background:transparent;color:var(--t-1);font-size:1.0625rem;font-weight:600;
  padding:22px 56px 22px 24px;border-radius:0;box-shadow:none;line-height:1.5;
}
.accordion-button:not(.collapsed){background:rgba(255,78,26,.045);color:var(--c-ink)}
.accordion-button:focus{box-shadow:none;border-color:transparent;outline:2px solid var(--c-primary);outline-offset:-3px}
.accordion-button::after{
  display:none;
}
.accordion-button::before{
  content:"";position:absolute;right:24px;top:50%;width:14px;height:2px;background:var(--c-ink);
  transform:translateY(-50%);transition:background-color .18s ease;
}
.faq-wrap .accordion-button{position:relative}
.faq-wrap .accordion-button .plus{
  position:absolute;right:19px;top:50%;width:24px;height:24px;transform:translateY(-50%);
}
.faq-wrap .accordion-button .plus::before,
.faq-wrap .accordion-button .plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--t-2);transition:transform .18s ease,background-color .18s ease;
}
.faq-wrap .accordion-button .plus::before{width:13px;height:2px;transform:translate(-50%,-50%)}
.faq-wrap .accordion-button .plus::after{width:2px;height:13px;transform:translate(-50%,-50%)}
.faq-wrap .accordion-button:not(.collapsed) .plus::after{transform:translate(-50%,-50%) scaleY(0)}
.faq-wrap .accordion-button:not(.collapsed) .plus::before{background:var(--c-primary)}
.accordion-body{
  padding:0 24px 24px 24px;color:var(--t-2);font-size:15.5px;border-left:2px solid transparent;
}
.accordion-item:has(.accordion-button:not(.collapsed)) .accordion-body{border-left:2px solid var(--c-primary);margin-left:22px;padding-left:20px}

/* ---------- cross links ---------- */
.cross-grid{display:grid;grid-template-columns:1fr;gap:24px}
.cross-card{overflow:hidden;display:flex;flex-direction:column}
.cross-card .pic{overflow:hidden;border-bottom:1px solid var(--c-line)}
.cross-card .pic img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.cross-card:hover .pic img{transform:scale(1.03)}
.cross-card .body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1}
.cross-card h3{font-size:1.125rem;font-weight:600}
.cross-card p{color:var(--t-2);font-size:14.5px;flex:1;margin:0}
.cross-card .go{font-size:13px;font-weight:600;color:var(--c-primary);display:inline-flex;align-items:center;gap:6px}
.cross-card:hover{border-color:var(--c-ink)}

/* ---------- cta band ---------- */
.cta-band{position:relative;background:var(--c-ink);color:#F7F4EE;overflow:hidden;padding:clamp(56px,7vw,96px) 0}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(247,244,238,.045) 0 1px,transparent 1px 14px);
}
.cta-band .inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
.cta-band h2{font-size:clamp(1.75rem,4vw,3rem);font-weight:800;line-height:1.1;letter-spacing:-.03em;color:#F7F4EE}
.cta-band p{color:#A8A49C;margin-top:14px;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ---------- footer ---------- */
.site-footer{background:var(--c-ink);color:#F7F4EE;padding:64px 0 24px;border-top:1px solid var(--c-line-dark)}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px;padding-bottom:40px;border-bottom:1px solid var(--c-line-dark)}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .brand-mark{background:var(--c-highlight);color:var(--c-ink)}
.footer-brand strong{display:block;font-size:16px;font-weight:800;color:#F7F4EE}
.footer-brand em{display:block;font-style:normal;font-size:11px;letter-spacing:.14em;color:#8A857B;font-family:var(--font-mono);margin-top:2px}
.footer-desc{color:#A8A49C;font-size:14.5px;line-height:1.85;max-width:420px;margin:0}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;color:#F7F4EE;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px}
.footer-col a{color:#A8A49C;font-size:14.5px;border-bottom:1px solid transparent}
.footer-col a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary)}
.footer-bottom{display:flex;flex-direction:column;gap:12px;padding-top:22px;font-size:13px;color:#8A857B}
.footer-bottom .legal{display:flex;gap:18px}
.footer-bottom .legal span{cursor:default}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (min-width:576px){
  .stats-grid{grid-template-columns:repeat(4,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
}
@media (min-width:768px){
  .cross-grid{grid-template-columns:repeat(2,1fr)}
  .cta-band .inner{grid-template-columns:1.4fr .9fr}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr}
}
@media (min-width:992px){
  .main-nav{display:flex}
  .header-actions .btn-primary{display:inline-flex}
  .nav-toggle{display:none}
  .bottom-tab{display:none}
  .hero-inner{grid-template-columns:7fr 5fr}
  .split{grid-template-columns:5fr 7fr;gap:56px}
  .intro-sticky{position:sticky;top:104px;align-self:start}
  .process{grid-template-columns:5fr 7fr;gap:56px}
  .process-sticky{position:sticky;top:104px;align-self:start}
  .scene-grid{grid-template-columns:repeat(4,1fr);gap:20px}
  .cross-grid{grid-template-columns:repeat(3,1fr)}
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between}
  .hero-media img{aspect-ratio:5/6}
  .entry-card{padding:24px}
}
@media (min-width:1200px){
  .split{gap:72px}
}
@media (min-width:1400px){
  .container{max-width:1240px}
}
@media (max-width:991.98px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom))}
  .scene-grid{overflow-x:auto;grid-auto-flow:column;grid-auto-columns:78%;scroll-snap-type:x mandatory;padding:4px 16px 12px;margin:0 -24px;}
  .scene{scroll-snap-align:start}
  .scene-grid::-webkit-scrollbar{height:4px}
}
@media (max-width:575.98px){
  .container{padding-left:16px;padding-right:16px}
  .header-inner{height:64px}
  .logo-text strong{font-size:14px}
  .logo-text em{font-size:10px}
  .hero-sub{font-size:15.5px}
  .float-badge.b1{left:8px}
  .float-badge.b2{right:8px}
  .bottom-tab a{font-size:10.5px}
  .bottom-tab a i{font-size:16px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{transform:none !important}
  .card:hover .pic img,.scene:hover .thumb img{transform:none !important}
}

/* roulang page: category2 */
:root{
  --c-ink:#0E0F11;
  --c-ink-2:#1B1D21;
  --c-line-dark:#26282C;
  --c-paper:#F7F4EE;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD5;
  --c-primary:#FF4E1A;
  --c-primary-deep:#DB3A0B;
  --c-accent:#0FC7A8;
  --c-highlight:#DFF24B;
  --t-main:#16181C;
  --t-sub:#5C5850;
  --t-weak:#8A857B;
  --t-invert:#F7F4EE;
  --t-invert-weak:#A8A49C;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 0 rgba(14,15,17,.04);
  --sh-2:0 12px 32px -12px rgba(14,15,17,.18);
  --sp-section:110px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--t-main);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease;}
a:hover{color:var(--c-primary);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}

body .container{
  max-width:1240px;
  padding-left:24px;
  padding-right:24px;
  margin:0 auto;
  width:100%;
}

/* ---------- 通用排版 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--t-weak);
  text-transform:uppercase;
  margin-bottom:14px;
}
.eyebrow .dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--c-primary);
  display:inline-block;
}
.section{padding:var(--sp-section) 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-dark{background:var(--c-ink);color:var(--t-invert);}
.section-dark .lead,.section-dark p{color:var(--t-invert-weak);}
h2.section-title{
  font-size:clamp(1.625rem,3.2vw,2.6rem);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.02em;
}
.section-head{
  max-width:760px;
  margin-bottom:56px;
}
.section-head .lead{
  margin-top:16px;
  color:var(--t-sub);
  font-size:17px;
  line-height:1.85;
}
.title-num{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--c-primary);
  letter-spacing:.12em;
  display:block;
  margin-bottom:10px;
}

/* ---------- 按钮 ---------- */
.btn{
  --bs-btn-focus-box-shadow:none;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-btn);
  font-weight:600;
  font-size:15px;
  line-height:1;
  padding:0 22px;
  height:44px;
  border:1px solid transparent;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
  box-shadow:none;
}
.btn:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.btn-lg{height:52px;font-size:16px;padding:0 28px;}
.btn-sm{height:36px;font-size:14px;padding:0 16px;border-radius:8px;}
.btn i{transition:transform .18s ease;font-size:.9em;}
.btn:hover i{transform:translateX(4px);}
.btn-primary{
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));
  border-color:var(--c-primary);
  color:#fff;
}
.btn-primary:hover,.btn-primary:focus,.btn-primary:active{
  background:var(--c-primary-deep);
  border-color:var(--c-primary-deep);
  color:#fff;
  transform:translateY(-1px);
}
.btn-outline-ink{
  background:transparent;
  border-color:var(--c-ink);
  color:var(--c-ink);
}
.btn-outline-ink:hover{
  background:transparent;
  border-color:var(--c-primary);
  color:var(--c-primary);
  transform:translateY(-1px);
}
.btn-ghost{
  background:transparent;
  border-color:rgba(247,244,238,.34);
  color:var(--t-invert);
}
.btn-ghost:hover{
  border-color:var(--c-primary);
  color:var(--c-primary);
  transform:translateY(-1px);
}

/* ---------- 徽章 ---------- */
.badge-pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  padding:5px 12px;
  border-radius:999px;
  line-height:1.5;
}
.badge-accent{
  background:rgba(15,199,168,.12);
  color:#0A7A68;
  border:1px solid rgba(15,199,168,.35);
}
.badge-soft{
  background:#F1EDE4;
  color:var(--t-sub);
  border:1px solid var(--c-line);
}
.badge-flag{
  background:var(--c-highlight);
  color:var(--c-ink);
}

/* ---------- 顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,244,238,.96);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .2s ease,background-color .2s ease;
}
.site-header.is-scrolled{
  background:var(--c-paper);
  box-shadow:0 1px 0 rgba(14,15,17,.06),0 8px 24px -18px rgba(14,15,17,.4);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
}
.logo{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:36px;height:36px;
  border-radius:10px;
  background:var(--c-ink);
  color:var(--c-highlight);
  display:flex;align-items:center;justify-content:center;
  font-weight:800;
  font-size:18px;
  flex:none;
}
.logo-text{display:flex;flex-direction:column;line-height:1.15;}
.logo-text strong{font-size:16px;font-weight:800;letter-spacing:-.01em;color:var(--t-main);}
.logo-text em{
  font-style:normal;
  font-size:11px;
  letter-spacing:.1em;
  color:var(--t-weak);
  font-family:var(--font-mono);
  text-transform:uppercase;
}
.main-nav{display:none;align-items:center;gap:4px;}
.main-nav a{
  position:relative;
  font-size:15px;
  font-weight:500;
  color:var(--t-sub);
  padding:8px 12px;
  border-radius:8px;
  transition:color .2s ease,background-color .2s ease;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .2s ease;
}
.main-nav a:hover{color:var(--t-main);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-primary);font-weight:600;}
.main-nav a.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{
  width:44px;height:44px;
  border:1px solid var(--c-line);
  border-radius:10px;
  background:var(--c-surface);
  color:var(--c-ink);
  font-size:17px;
  display:flex;align-items:center;justify-content:center;
}
.nav-toggle:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.mobile-drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-surface);
  padding:12px 0 18px;
}
.mobile-drawer.open{display:block;}
.mobile-drawer a{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:13px 0;
  border-bottom:1px solid var(--c-line);
  font-size:16px;
  color:var(--t-main);
}
.mobile-drawer a:last-child{border-bottom:0;}
.mobile-drawer a.active{color:var(--c-primary);font-weight:600;}
.mobile-drawer a i{color:var(--t-weak);font-size:13px;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding:72px 0 84px;
  background:var(--c-paper);
  overflow:hidden;
}
.hero::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(14,15,17,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(14,15,17,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.85),rgba(0,0,0,0));
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.85),rgba(0,0,0,0));
  pointer-events:none;
}
.hero-grid{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2.25rem,6vw,4.25rem);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-.03em;
  margin-bottom:20px;
}
.hl-underline{
  position:relative;
  display:inline-block;
}
.hl-underline::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:4px;
  height:3px;
  background:var(--c-highlight);
  z-index:-1;
}
.hero-sub{
  font-size:17px;
  line-height:1.85;
  color:var(--t-sub);
  max-width:620px;
  margin-bottom:30px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:38px;}
.stat-bar{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1px;
  background:var(--c-line);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
}
.stat-item{
  background:var(--c-surface);
  padding:16px 18px;
}
.stat-item .num{
  font-family:var(--font-mono);
  font-size:22px;
  font-weight:700;
  color:var(--c-ink);
  display:block;
  line-height:1.3;
}
.stat-item .lbl{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--t-weak);
}
.hero-visual{position:relative;}
.hero-visual .frame{
  position:relative;
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  aspect-ratio:4/5;
  background:var(--c-ink-2);
}
.hero-visual .frame img{
  width:100%;height:100%;
  object-fit:cover;
}
.hero-visual .frame::after{
  content:"";
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,15,17,.05),rgba(14,15,17,.6));
}
.hero-chips{
  position:absolute;
  left:16px;bottom:16px;right:16px;
  display:flex;flex-wrap:wrap;gap:8px;
}
.hero-chips span{
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  padding:5px 11px;
  border-radius:999px;
  background:rgba(247,244,238,.92);
  color:var(--c-ink);
  border:1px solid rgba(247,244,238,.4);
}
.hero-chips span.accent{background:var(--c-accent);color:#04302A;border-color:var(--c-accent);}

/* ---------- 图文介绍 ---------- */
.intro-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
  align-items:start;
}
.intro-text p{color:var(--t-sub);}
.intro-text p:last-of-type{margin-bottom:0;}
.intro-visual .frame{
  border-radius:var(--r-img);
  overflow:hidden;
  border:1px solid var(--c-line);
  aspect-ratio:16/10;
  background:var(--c-ink-2);
}
.intro-visual .frame img{width:100%;height:100%;object-fit:cover;}
.intro-visual figcaption{
  font-size:13px;
  color:var(--t-weak);
  margin-top:10px;
}
.check-list{margin-top:26px;}
.check-list li{
  display:flex;
  gap:12px;
  padding:12px 0;
  border-top:1px solid var(--c-line);
  font-size:15px;
  color:var(--t-sub);
}
.check-list li:last-child{border-bottom:1px solid var(--c-line);}
.check-list i{color:var(--c-accent);margin-top:5px;font-size:13px;}

/* ---------- 步骤区 ---------- */
.steps-layout{
  display:grid;
  grid-template-columns:1fr;
  gap:40px;
}
.steps-side h2{font-size:clamp(1.625rem,3.2vw,2.35rem);font-weight:700;line-height:1.15;}
.steps-side .lead{color:var(--t-sub);margin-top:16px;font-size:16px;}
.step-counter{
  margin-top:26px;
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  font-family:var(--font-mono);
  border-top:2px solid var(--c-primary);
  padding-top:10px;
}
.step-counter .now{font-size:38px;font-weight:700;color:var(--c-ink);line-height:1;}
.step-counter .all{font-size:14px;color:var(--t-weak);letter-spacing:.08em;}
.steps-list{border-top:1px solid var(--c-line);}
.step-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:18px;
  padding:26px 0;
  border-bottom:1px solid var(--c-line);
  transition:border-color .2s ease;
}
.step-item .idx{
  font-family:var(--font-mono);
  font-size:15px;
  font-weight:700;
  color:var(--t-weak);
  padding-top:3px;
  letter-spacing:.06em;
  transition:color .2s ease;
}
.step-item h3{
  font-size:1.125rem;
  font-weight:600;
  line-height:1.35;
  margin-bottom:8px;
}
.step-item p{
  color:var(--t-sub);
  font-size:15px;
  margin:0;
}
.step-item.is-current .idx{color:var(--c-primary);}
.step-item.is-current h3{color:var(--c-ink);}
.step-item:hover{border-color:var(--c-ink);}

/* ---------- 条目卡 ---------- */
.entry-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
.entry-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease;
  display:flex;
  flex-direction:column;
  gap:12px;
  height:100%;
}
.entry-card:hover{
  border-color:var(--c-ink);
  box-shadow:var(--sh-2);
  transform:translateY(-2px);
}
.entry-card .ico{
  width:44px;height:44px;
  border-radius:12px;
  border:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:center;
  color:var(--c-primary);
  font-size:18px;
  background:var(--c-paper);
}
.entry-card h3{font-size:1.0625rem;font-weight:600;line-height:1.4;}
.entry-card p{color:var(--t-sub);font-size:15px;margin:0;}
.entry-card .more{
  margin-top:auto;
  font-size:14px;
  font-weight:600;
  color:var(--c-ink);
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.entry-card .more i{transition:transform .18s ease;font-size:12px;}
.entry-card:hover .more{color:var(--c-primary);}
.entry-card:hover .more i{transform:translateX(4px);}

/* ---------- FAQ ---------- */
.accordion{--bs-accordion-border-width:0;--bs-accordion-bg:transparent;}
.accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--c-line);
  border-radius:0 !important;
}
.accordion-item:first-of-type{border-top:1px solid var(--c-line);}
.accordion-button{
  background:transparent;
  color:var(--t-main);
  font-size:1.0625rem;
  font-weight:600;
  padding:24px 52px 24px 0;
  border-radius:0 !important;
  box-shadow:none !important;
  transition:color .18s ease;
}
.accordion-button:not(.collapsed){
  color:var(--c-primary);
  background:transparent;
}
.accordion-button::after{display:none;}
.accordion-button .sign{
  position:absolute;
  right:0;top:50%;
  transform:translateY(-50%);
  width:26px;height:26px;
  display:flex;align-items:center;justify-content:center;
  color:var(--c-ink);
  font-size:15px;
  transition:transform .18s ease,color .18s ease;
}
.accordion-button:not(.collapsed) .sign{transform:translateY(-50%) rotate(180deg);color:var(--c-primary);}
.accordion-button:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
.accordion-body{
  padding:0 56px 26px 18px;
  color:var(--t-sub);
  font-size:15.5px;
  line-height:1.85;
  border-left:2px solid var(--c-primary);
  margin-left:0;
  padding-left:18px;
}

/* ---------- 交叉链接 ---------- */
.cross-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
}
.cross-card{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px;
  background:var(--c-paper);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  transition:border-color .2s ease,background-color .2s ease;
}
.cross-card:hover{border-color:var(--c-primary);background:var(--c-surface);}
.cross-card strong{display:block;font-size:16px;font-weight:600;color:var(--t-main);}
.cross-card span{font-size:13.5px;color:var(--t-weak);}
.cross-card i{color:var(--c-ink);}
.cross-card:hover strong{color:var(--c-primary);}

/* ---------- 入口表单 ---------- */
.entry-form-wrap{
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  background:var(--c-surface);
  padding:28px;
}
.form-row{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
.field label{
  display:block;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--t-sub);
  margin-bottom:7px;
}
.form-control{
  height:48px;
  border-radius:10px;
  border:1px solid var(--c-line);
  background:var(--c-paper);
  font-size:15px;
  color:var(--t-main);
  padding:0 14px;
  box-shadow:none;
  transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease;
}
.form-control::placeholder{color:var(--t-weak);}
.form-control:focus{
  background:var(--c-surface);
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(255,78,26,.14);
}
.field .hint{font-size:13px;color:var(--t-weak);margin-top:6px;min-height:18px;}
.form-actions{margin-top:18px;display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 底部 CTA 带 ---------- */
.cta-band{
  position:relative;
  background:var(--c-ink);
  color:var(--t-invert);
  padding:90px 0;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(247,244,238,.045) 0 1px,transparent 1px 12px);
  pointer-events:none;
}
.cta-inner{position:relative;max-width:820px;}
.cta-band h2{
  font-size:clamp(1.875rem,4.6vw,3.2rem);
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.03em;
  margin-bottom:18px;
}
.cta-band p{color:var(--t-invert-weak);font-size:16.5px;max-width:640px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-ink);
  color:var(--t-invert);
  padding:64px 0 28px;
  border-top:1px solid var(--c-line-dark);
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:36px;
  padding-bottom:40px;
  border-bottom:1px solid var(--c-line-dark);
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--c-primary);color:#fff;}
.footer-brand strong{display:block;font-size:16px;font-weight:700;}
.footer-brand em{
  font-style:normal;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--t-invert-weak);
}
.footer-desc{
  color:var(--t-invert-weak);
  font-size:14.5px;
  line-height:1.85;
  max-width:560px;
  margin:0;
}
.footer-col h4{
  font-size:13px;
  letter-spacing:.1em;
  color:var(--t-invert-weak);
  font-weight:600;
  margin-bottom:16px;
  font-family:var(--font-mono);
}
.footer-col ul li{margin-bottom:11px;}
.footer-col ul a{
  font-size:15px;
  color:var(--t-invert);
  border-bottom:1px solid transparent;
  padding-bottom:1px;
}
.footer-col ul a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary);}
.footer-bottom{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding-top:22px;
  font-size:13px;
  color:var(--t-invert-weak);
}
.footer-bottom .legal{display:flex;gap:18px;}
.footer-bottom .legal span{cursor:default;}
.footer-bottom .legal span:hover{color:var(--c-primary);}

/* ---------- 移动底部 Tab ---------- */
.mobile-tabbar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  display:grid;
  grid-template-columns:repeat(5,1fr);
  background:rgba(247,244,238,.98);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -6px 20px -14px rgba(14,15,17,.5);
}
.mobile-tabbar a{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  height:60px;
  font-size:12px;
  color:var(--t-sub);
}
.mobile-tabbar a i{font-size:16px;}
.mobile-tabbar a.active{color:var(--c-primary);font-weight:600;}
.mobile-tabbar a.active::before{
  content:"";
  position:absolute;
  top:0;left:18%;right:18%;
  height:2px;
  background:var(--c-primary);
}
.mobile-tabbar a:focus-visible{outline:2px solid var(--c-primary);outline-offset:-2px;}

/* ---------- 入场动效 ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1);
}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:575.98px){
  body .container{padding-left:16px;padding-right:16px;}
  .hero{padding:44px 0 60px;}
  .section{padding:56px 0;}
  .cta-band{padding:64px 0;}
  .hero-actions .btn{width:100%;}
  .form-actions .btn{width:100%;}
}
@media (min-width:576px){
  .stat-bar{grid-template-columns:repeat(4,1fr);}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .cross-grid{grid-template-columns:repeat(2,1fr);}
  .form-row{grid-template-columns:repeat(2,1fr);}
  .form-row .field-full{grid-column:1 / -1;}
  .footer-bottom{flex-direction:row;align-items:center;justify-content:space-between;}
}
@media (max-width:991.98px){
  body{padding-bottom:calc(60px + env(safe-area-inset-bottom));}
}
@media (min-width:768px){
  :root{--sp-section:88px;}
  .hero-grid{grid-template-columns:7fr 5fr;gap:48px;}
  .intro-grid{grid-template-columns:1fr 1fr;gap:52px;}
  .steps-layout{grid-template-columns:5fr 7fr;gap:56px;}
  .entry-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr;}
}
@media (min-width:992px){
  :root{--sp-section:104px;}
  .main-nav{display:flex;}
  .nav-toggle{display:none;}
  .mobile-drawer{display:none !important;}
  .mobile-tabbar{display:none;}
  body{padding-bottom:0;}
  .hero{padding:88px 0 100px;}
  .entry-grid{grid-template-columns:repeat(4,1fr);}
  .cross-grid{grid-template-columns:repeat(4,1fr);}
  .steps-side{position:sticky;top:104px;}
}
@media (min-width:1200px){
  :root{--sp-section:118px;}
  .hero-grid{gap:64px;}
  .steps-layout{grid-template-columns:4fr 8fr;gap:72px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{transform:none;}
  html{scroll-behavior:auto;}
}

/* roulang page: category3 */
/* ===================== 设计变量 ===================== */
:root{
  --c-ink:#0E0F11;
  --c-ink-2:#1B1D21;
  --c-line-dark:#26282C;
  --c-paper:#F7F4EE;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD5;
  --c-primary:#FF4E1A;
  --c-primary-deep:#DB3A0B;
  --c-accent:#0FC7A8;
  --c-highlight:#DFF24B;
  --c-text:#16181C;
  --c-text-2:#5C5850;
  --c-text-3:#8A857B;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-1:0 1px 0 rgba(14,15,17,.04);
  --sh-2:0 12px 32px -12px rgba(14,15,17,.18);
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --sec-pad:96px;
}

/* ===================== 基础重置 ===================== */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--c-primary);}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
::selection{background:var(--c-highlight);color:var(--c-ink);}

/* ===================== 容器 ===================== */
.container{width:100%;max-width:1240px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media (max-width:575.98px){.container{padding-left:16px;padding-right:16px;}}

/* ===================== 顶部导航 ===================== */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--c-paper);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .25s ease;
}
.site-header.scrolled{box-shadow:0 1px 0 rgba(14,15,17,.06),0 10px 26px -20px rgba(14,15,17,.45);}
.header-inner{height:72px;display:flex;align-items:center;gap:24px;}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:9px;background:var(--c-ink);color:var(--c-paper);
  display:grid;place-items:center;font-weight:800;font-size:16px;letter-spacing:0;
}
.brand-text strong{display:block;font-size:15px;font-weight:800;line-height:1.2;letter-spacing:-.01em;}
.brand-text em{display:block;font-style:normal;font-size:11px;color:var(--c-text-3);letter-spacing:.1em;margin-top:2px;}
.main-nav{margin-left:auto;display:none;}
@media (min-width:992px){.main-nav{display:flex;align-items:center;gap:26px;}}
.main-nav a{
  position:relative;font-size:14.5px;font-weight:500;color:var(--c-text-2);
  padding:8px 1px;white-space:nowrap;
}
.main-nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-primary);transition:width .2s cubic-bezier(.2,.7,.2,1);
}
.main-nav a:hover{color:var(--c-text);}
.main-nav a:hover::after{width:100%;}
.main-nav a.active{color:var(--c-primary);font-weight:600;}
.main-nav a.active::after{width:100%;}
.nav-cta{display:none;margin-left:6px;}
@media (min-width:992px){.nav-cta{display:inline-flex;}}
.nav-toggle{
  margin-left:auto;width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--c-line);border-radius:10px;color:var(--c-text);font-size:16px;
  transition:border-color .18s ease;
}
.nav-toggle:hover{border-color:var(--c-ink);}
@media (min-width:992px){.nav-toggle{display:none;}}
.nav-drawer{border-top:1px solid var(--c-line);background:var(--c-surface);}
.nav-drawer .container{display:flex;flex-direction:column;padding-top:6px;padding-bottom:16px;}
.nav-drawer a{
  padding:13px 2px;font-size:15px;color:var(--c-text-2);border-bottom:1px solid var(--c-line);
}
.nav-drawer a:last-child{border-bottom:0;}
.nav-drawer a.active{color:var(--c-primary);font-weight:700;}
@media (min-width:992px){.nav-drawer{display:none !important;}}

/* ===================== 按钮 ===================== */
.btn-c{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
  white-space:nowrap;
}
.btn-c i{transition:transform .18s ease;}
.btn-c:hover i{transform:translateX(4px);}
.btn-c-primary{background:var(--c-primary);border-color:var(--c-primary);color:#fff;}
.btn-c-primary:hover{background:var(--c-primary-deep);border-color:var(--c-primary-deep);color:#fff;transform:translateY(-1px);}
.btn-c-outline{background:transparent;border-color:var(--c-ink);color:var(--c-ink);}
.btn-c-outline:hover{border-color:var(--c-primary);color:var(--c-primary);}
.btn-c-ghost{background:transparent;border-color:rgba(247,244,238,.38);color:var(--c-paper);}
.btn-c-ghost:hover{border-color:var(--c-primary);color:var(--c-primary);}
.btn-c-lg{height:52px;padding:0 28px;font-size:16px;}
.btn-c-sm{height:36px;padding:0 16px;font-size:13.5px;}

/* ===================== 徽章 / 标签 ===================== */
.badge-c{
  display:inline-block;padding:4px 12px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.08em;
  background:rgba(15,199,168,.12);color:#0A7A68;border:1px solid rgba(15,199,168,.32);
}
.badge-rec{background:var(--c-highlight);color:var(--c-ink);border-color:var(--c-highlight);}
.badge-plain{background:var(--c-paper);color:var(--c-text-2);border-color:var(--c-line);}

/* ===================== Hero ===================== */
.hero{position:relative;background:var(--c-ink);color:var(--c-paper);overflow:hidden;padding:92px 0 84px;}
.hero-bg{
  position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(14,15,17,.80) 0%,rgba(14,15,17,.92) 55%,rgba(14,15,17,.97) 100%),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center 28%;
}
.hero-inner{position:relative;z-index:2;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.16em;color:var(--c-highlight);
  border:1px solid var(--c-line-dark);border-radius:999px;padding:6px 15px;margin-bottom:24px;
}
.hero h1{
  font-size:clamp(2.25rem,6vw,4.25rem);font-weight:800;line-height:1.05;letter-spacing:-.03em;
  color:var(--c-paper);
}
.hero h1 .hl{border-bottom:6px solid var(--c-highlight);padding-bottom:2px;}
.hero-sub{margin-top:24px;max-width:620px;font-size:clamp(1rem,1.5vw,1.125rem);line-height:1.8;color:#C9C5BC;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;
  margin-top:48px;padding-top:26px;border-top:1px solid var(--c-line-dark);
}
.hero-stats b{display:block;font-family:var(--mono);font-size:26px;font-weight:700;color:var(--c-paper);line-height:1.1;}
.hero-stats span{font-size:12.5px;color:#A8A49C;letter-spacing:.04em;}
@media (max-width:575.98px){
  .hero{padding:64px 0 56px;}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:34px;}
}
.hero-figure{
  position:relative;border-radius:var(--r-img);overflow:hidden;
  aspect-ratio:1/1;background:var(--c-ink-2);border:1px solid var(--c-line-dark);
}
.hero-figure img{width:100%;height:100%;object-fit:cover;}
.float-tag{
  position:absolute;background:var(--c-paper);color:var(--c-ink);
  font-size:12px;font-weight:700;letter-spacing:.04em;
  padding:7px 14px;border-radius:999px;box-shadow:var(--sh-2);
}
.float-tag.t1{top:16px;left:16px;}
.float-tag.t2{top:58px;right:16px;}
.float-tag.t3{bottom:18px;left:16px;}

/* ===================== 板块结构 ===================== */
.sec{padding:var(--sec-pad) 0;}
.sec-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.sec-dark{background:var(--c-ink);color:var(--c-paper);}
.sec-head{max-width:780px;margin-bottom:56px;}
.sec-num{
  display:block;font-family:var(--mono);font-size:13px;letter-spacing:.18em;
  color:var(--c-primary);margin-bottom:14px;
}
.sec-head h2{font-size:clamp(1.625rem,3.2vw,2.6rem);font-weight:700;line-height:1.15;letter-spacing:-.02em;}
.sec-head p{margin-top:16px;color:var(--c-text-2);font-size:16px;line-height:1.85;}
.sec-dark .sec-head p{color:#A8A49C;}
@media (max-width:991.98px){:root{--sec-pad:72px;}}
@media (max-width:575.98px){:root{--sec-pad:56px;} .sec-head{margin-bottom:36px;}}

/* ===================== 属性面板 ===================== */
.stat-panel{
  position:relative;height:100%;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:26px 22px;
  box-shadow:var(--sh-1);transition:border-color .2s ease,box-shadow .25s ease;
}
.stat-panel:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);}
.stat-panel .idx{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--c-text-3);}
.stat-panel h3{font-size:1.125rem;font-weight:600;margin-top:12px;line-height:1.35;}
.stat-panel p{margin-top:10px;font-size:14.5px;line-height:1.78;color:var(--c-text-2);}
.stat-panel::after{
  content:"";position:absolute;left:22px;right:22px;bottom:0;height:2px;
  background:var(--c-primary);transform:scaleX(0);transform-origin:left;
  transition:transform .3s cubic-bezier(.2,.7,.2,1);
}
.stat-panel:hover::after{transform:scaleX(1);}

/* ===================== 双栏 / 锚点导航 ===================== */
.anchor-panel{
  position:sticky;top:96px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);padding:22px;
}
.anchor-title{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--c-text-3);margin-bottom:14px;}
.anchor-panel a{
  display:block;padding:11px 0 11px 14px;font-size:14.5px;color:var(--c-text-2);
  border-left:2px solid var(--c-line);transition:all .18s ease;
}
.anchor-panel a:hover{color:var(--c-primary);border-left-color:var(--c-primary);padding-left:18px;}
@media (max-width:991.98px){
  .anchor-panel{position:static;display:flex;flex-wrap:wrap;gap:10px;padding:16px;}
  .anchor-title{width:100%;margin-bottom:2px;}
  .anchor-panel a{border-left:0;border:1px solid var(--c-line);border-radius:999px;padding:8px 14px;font-size:13.5px;}
  .anchor-panel a:hover{padding-left:14px;border-color:var(--c-primary);}
}

/* ===================== 问答块 ===================== */
.qa-block{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:28px;margin-bottom:24px;box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .25s ease;
}
.qa-block:hover{border-color:var(--c-ink);box-shadow:var(--sh-2);}
.qa-block h3{position:relative;font-size:1.1875rem;font-weight:600;line-height:1.35;padding-left:18px;margin-bottom:14px;}
.qa-block h3::before{content:"";position:absolute;left:0;top:.4em;width:3px;height:1em;background:var(--c-primary);border-radius:2px;}
.qa-block p{font-size:15.5px;line-height:1.85;color:var(--c-text-2);}
.qa-block p + p{margin-top:12px;}
@media (max-width:575.98px){.qa-block{padding:22px 18px;}}

.tick-list{margin-top:12px;}
.tick-list li{position:relative;padding-left:26px;margin-top:10px;font-size:15px;line-height:1.8;color:var(--c-text-2);}
.tick-list li::before{content:"✓";position:absolute;left:0;top:0;color:var(--c-accent);font-weight:700;}

/* ===================== 条目卡 ===================== */
.item-card{
  height:100%;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-1);transition:border-color .2s ease,box-shadow .25s ease;
}
.item-card:hover{border-color:var(--c-ink);box-shadow:var(--sh-2);}
.item-card h3{font-size:1.0625rem;font-weight:600;line-height:1.4;margin:12px 0 8px;}
.item-card p{font-size:14.5px;line-height:1.78;color:var(--c-text-2);}
.link-arrow{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-size:14px;font-weight:600;color:var(--c-primary);}
.link-arrow i{transition:transform .18s ease;}
.link-arrow:hover i{transform:translateX(4px);}

/* ===================== 大卡片 ===================== */
.card-c{
  display:flex;flex-direction:column;height:100%;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-1);
  transition:border-color .2s ease,box-shadow .25s ease;
}
.card-c:hover{border-color:var(--c-ink);box-shadow:var(--sh-2);}
.card-media{aspect-ratio:16/10;overflow:hidden;background:var(--c-paper);}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1);}
.card-c:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card-body h3{font-size:1.125rem;font-weight:600;line-height:1.35;}
.card-body h3 a{
  background-image:linear-gradient(var(--c-primary),var(--c-primary));
  background-size:0 2px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size .2s ease;
}
.card-c:hover .card-body h3 a{background-size:100% 2px;}
.card-body p{font-size:14.5px;line-height:1.78;color:var(--c-text-2);}
.card-meta{margin-top:auto;padding-top:14px;border-top:1px solid var(--c-line);display:flex;justify-content:space-between;font-family:var(--mono);font-size:12.5px;color:var(--c-text-3);letter-spacing:.06em;}

/* ===================== 风险场景卡 ===================== */
.risk-card{
  height:100%;background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px 24px;box-shadow:var(--sh-1);transition:border-color .2s ease,box-shadow .25s ease;
}
.risk-card:hover{border-color:var(--c-primary);box-shadow:var(--sh-2);}
.risk-card .ic{
  width:42px;height:42px;border-radius:11px;border:1px solid var(--c-line);
  display:grid;place-items:center;color:var(--c-primary);font-size:16px;background:var(--c-paper);
}
.risk-card h3{font-size:1.125rem;font-weight:600;margin:16px 0 10px;}
.risk-card p{font-size:14.5px;line-height:1.78;color:var(--c-text-2);}
.risk-card .do{margin-top:14px;font-size:13.5px;color:var(--c-text);font-weight:600;}
.risk-card .do span{color:var(--c-accent);}

/* ===================== FAQ 手风琴 ===================== */
.faq-wrap{max-width:900px;}
.accordion-item{background:transparent;border:0;border-bottom:1px solid var(--c-line);}
.accordion-item:first-of-type{border-top:1px solid var(--c-line);}
.accordion-button{
  background:transparent;box-shadow:none;border-radius:0;
  font-size:17px;font-weight:600;color:var(--c-text);
  padding:22px 52px 22px 0;
}
.accordion-button:not(.collapsed){color:var(--c-primary);background:transparent;box-shadow:none;}
.accordion-button:focus{box-shadow:none;outline:2px solid var(--c-primary);outline-offset:2px;}
.accordion-button::after{
  content:"+";background-image:none;width:26px;height:26px;font-size:20px;line-height:1;
  display:grid;place-items:center;color:var(--c-primary);transform:none;
  transition:transform .18s ease;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:rotate(180deg);}
.accordion-body{
  padding:0 40px 24px 20px;border-left:2px solid var(--c-primary);
  font-size:15.5px;line-height:1.85;color:var(--c-text-2);margin-left:2px;
}
@media (max-width:575.98px){
  .accordion-button{font-size:15.5px;padding:18px 44px 18px 0;}
  .accordion-body{padding:0 12px 20px 16px;font-size:15px;}
}

/* ===================== 交叉链接区 ===================== */
.cross-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:44px;}

/* ===================== 底部 CTA 带 ===================== */
.cta-band{position:relative;background:var(--c-ink);color:var(--c-paper);padding:88px 0;overflow:hidden;}
.cta-band::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(247,244,238,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(247,244,238,.055) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.5fr auto;gap:40px;align-items:center;}
.cta-band h2{font-size:clamp(1.75rem,3.6vw,2.75rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;}
.cta-band p{margin-top:16px;max-width:640px;color:#A8A49C;font-size:15.5px;line-height:1.85;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;}
@media (max-width:991.98px){
  .cta-band{padding:64px 0;}
  .cta-inner{grid-template-columns:1fr;gap:26px;}
  .cta-actions .btn-c{flex:1 1 100%;}
}

/* ===================== 页脚 ===================== */
.site-footer{background:var(--c-ink);color:var(--c-paper);border-top:1px solid var(--c-line-dark);padding-top:72px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:48px;padding-bottom:48px;}
.footer-brand{display:flex;align-items:center;gap:12px;}
.footer-brand .brand-mark{background:var(--c-paper);color:var(--c-ink);}
.footer-brand strong{display:block;font-size:15px;font-weight:800;line-height:1.25;}
.footer-brand em{display:block;font-style:normal;font-size:12px;color:#A8A49C;letter-spacing:.08em;margin-top:3px;}
.footer-desc{margin-top:18px;max-width:440px;font-size:14px;line-height:1.85;color:#A8A49C;}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.06em;margin-bottom:16px;color:var(--c-paper);}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:#A8A49C;}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  border-top:1px solid var(--c-line-dark);padding:22px 0 26px;
  display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;
  font-size:13px;color:#8A857B;
}
.footer-bottom .legal span{margin-left:18px;}
.footer-bottom .legal span:first-child{margin-left:0;}
@media (max-width:767.98px){
  .site-footer{padding-top:52px;}
  .footer-grid{grid-template-columns:1fr;gap:34px;padding-bottom:34px;}
}

/* ===================== 移动端底部 Tab ===================== */
.mobile-tab{
  position:fixed;left:0;right:0;bottom:0;z-index:1040;
  display:flex;background:var(--c-surface);border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -20px rgba(14,15,17,.5);
}
.mobile-tab a{
  flex:1;min-height:60px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;
  position:relative;font-size:11px;color:var(--c-text-3);letter-spacing:.02em;
}
.mobile-tab a i{font-size:16px;}
.mobile-tab a.active{color:var(--c-primary);font-weight:700;}
.mobile-tab a.active::before{
  content:"";position:absolute;top:0;left:50%;transform:translateX(-50%);
  width:22px;height:2px;background:var(--c-primary);border-radius:0 0 2px 2px;
}
@media (min-width:992px){.mobile-tab{display:none;}}
@media (max-width:991.98px){body{padding-bottom:calc(60px + env(safe-area-inset-bottom));}}

/* ===================== 入场动效 ===================== */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s cubic-bezier(.2,.7,.2,1),transform .24s cubic-bezier(.2,.7,.2,1);}
.reveal.in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{transform:none;transition:opacity .24s linear;}
  *{scroll-behavior:auto !important;}
  .card-c:hover .card-media img{transform:none;}
  .btn-c:hover{transform:none;}
}

/* ===================== Bootstrap 默认外观覆盖 ===================== */
.btn{--bs-btn-border-radius:var(--r-btn);}
.card{--bs-card-border-radius:var(--r-card);}
.form-control{
  height:48px;border-radius:var(--r-btn);border:1px solid var(--c-line);
  background:var(--c-surface);color:var(--c-text);font-size:15px;padding:0 16px;
}
.form-control:focus{border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(255,78,26,.14);}
.form-label{font-size:14px;font-weight:600;color:var(--c-text-2);margin-bottom:8px;}
.form-hint{font-size:13px;color:var(--c-text-3);margin-top:6px;}

/* roulang page: category4 */
:root{
  --c-ink:#0E0F11;
  --c-ink-2:#1B1D21;
  --c-line-dark:#26282C;
  --c-paper:#F7F4EE;
  --c-surface:#FFFFFF;
  --c-line:#E4DFD5;
  --c-primary:#FF4E1A;
  --c-primary-deep:#DB3A0B;
  --c-accent:#0FC7A8;
  --c-highlight:#DFF24B;
  --c-text:#16181C;
  --c-text-2:#5C5850;
  --c-text-3:#8A857B;
  --c-invert:#F7F4EE;
  --c-invert-2:#A8A49C;
  --r-card:14px;
  --r-img:12px;
  --r-btn:10px;
  --sh-rest:0 1px 0 rgba(14,15,17,.04);
  --sh-hover:0 12px 32px -12px rgba(14,15,17,.18);
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.8;
  color:var(--c-text);
  background:var(--c-paper);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--c-primary);}
button,input,textarea,select{font:inherit;color:inherit;}
:focus-visible{outline:2px solid var(--c-primary);outline-offset:2px;}
h1,h2,h3,h4{margin:0;letter-spacing:-.02em;}
p{margin:0 0 1.1em;}
ul{margin:0;padding:0;list-style:none;}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:1030;
  background:rgba(247,244,238,.96);
  border-bottom:1px solid var(--c-line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{
  background:var(--c-paper);
  box-shadow:0 1px 0 rgba(14,15,17,.06),0 10px 26px -20px rgba(14,15,17,.35);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:24px;
  min-height:72px;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex-shrink:0;
}
.brand-mark{
  width:34px;height:34px;
  display:grid;place-items:center;
  background:var(--c-ink);
  color:var(--c-highlight);
  border-radius:9px;
  font-weight:800;
  font-size:16px;
  letter-spacing:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-text strong{font-size:16px;font-weight:800;letter-spacing:-.01em;}
.brand-text em{
  font-style:normal;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--c-text-3);
  font-family:var(--font-mono);
}
.main-nav{
  display:none;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.main-nav a{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  font-size:14.5px;
  color:var(--c-text-2);
  font-weight:500;
}
.main-nav a::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:0;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.main-nav a:hover{color:var(--c-text);}
.main-nav a:hover::after{transform:scaleX(1);}
.main-nav a.active{color:var(--c-primary);font-weight:700;}
.main-nav a.active::after{transform:scaleX(1);}
.header-cta{display:none;margin-left:12px;}

.btn{
  --btn-bg:var(--c-primary);
  --btn-fg:#fff;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:44px;
  padding:0 20px;
  border:1px solid transparent;
  border-radius:var(--r-btn);
  font-size:15px;
  font-weight:600;
  line-height:1;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.btn i{transition:transform .18s var(--ease);}
.btn-primary-c{
  background:linear-gradient(180deg,var(--c-primary),var(--c-primary-deep));
  color:#fff;
  box-shadow:var(--sh-rest);
}
.btn-primary-c:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(-1px);}
.btn-primary-c:hover i{transform:translateX(4px);}
.btn-outline-c{
  background:transparent;
  color:var(--c-text);
  border:1px solid var(--c-ink);
}
.btn-outline-c:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);}
.btn-outline-c:hover i{transform:translateX(4px);}
.btn-ghost-c{
  background:transparent;
  color:var(--c-invert);
  border:1px solid rgba(247,244,238,.4);
}
.btn-ghost-c:hover{border-color:var(--c-primary);color:var(--c-primary);transform:translateY(-1px);}
.btn-lg-c{height:52px;padding:0 26px;font-size:16px;}
.btn-sm-c{height:36px;padding:0 14px;font-size:13.5px;}

.menu-toggle{
  margin-left:auto;
  width:42px;height:42px;
  display:grid;place-items:center;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-btn);
  cursor:pointer;
  color:var(--c-text);
}
.menu-toggle:hover{border-color:var(--c-ink);}

.drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-paper);
  padding:12px 0 18px;
}
.drawer.open{display:block;}
.drawer a{
  display:block;
  padding:12px 0;
  font-size:15.5px;
  color:var(--c-text-2);
  border-bottom:1px solid var(--c-line);
}
.drawer a:last-child{border-bottom:0;}
.drawer a.active{color:var(--c-primary);font-weight:700;}
.drawer .btn{margin-top:14px;width:100%;}

/* ============ 移动底部 Tab ============ */
.tab-bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:1040;
  display:flex;
  background:var(--c-surface);
  border-top:1px solid var(--c-line);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -8px 24px -18px rgba(14,15,17,.35);
}
.tab-bar a{
  position:relative;
  flex:1;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:3px;
  height:60px;
  font-size:12px;
  color:var(--c-text-3);
}
.tab-bar a::before{
  content:"";
  position:absolute;
  top:0;left:50%;
  width:26px;height:2px;
  background:var(--c-primary);
  transform:translateX(-50%) scaleX(0);
  transition:transform .2s var(--ease);
}
.tab-bar a i{font-size:17px;}
.tab-bar a.active{color:var(--c-primary);font-weight:700;}
.tab-bar a.active::before{transform:translateX(-50%) scaleX(1);}
body{padding-bottom:72px;}

/* ============ 通用板块 ============ */
.section{padding:56px 0;}
.section-alt{background:var(--c-surface);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.section-dark{background:var(--c-ink);color:var(--c-invert);}
.sec-index{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--c-primary);
  display:block;
  margin-bottom:10px;
}
.sec-title{
  font-size:clamp(1.625rem,3.2vw,2.6rem);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-.02em;
}
.sec-lead{
  margin-top:14px;
  color:var(--c-text-2);
  max-width:760px;
  font-size:16px;
}
.section-dark .sec-lead{color:var(--c-invert-2);}
.sec-head{margin-bottom:36px;}

/* ============ Hero ============ */
.cat-hero{
  position:relative;
  background:
    linear-gradient(115deg,rgba(14,15,17,.94) 0%,rgba(14,15,17,.82) 46%,rgba(14,15,17,.55) 100%),
    url("/assets/images/backpic/back-3.png") center right/cover no-repeat;
  color:var(--c-invert);
  overflow:hidden;
}
.cat-hero::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(247,244,238,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(247,244,238,.05) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2;}
.hero-inner{padding:64px 0 58px;}
.breadcrumb-line{
  font-size:13px;
  letter-spacing:.04em;
  color:var(--c-invert-2);
  font-family:var(--font-mono);
  margin-bottom:22px;
}
.breadcrumb-line a{color:var(--c-invert-2);}
.breadcrumb-line a:hover{color:var(--c-primary);}
.breadcrumb-line span.sep{margin:0 8px;opacity:.6;}
.hero-badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:6px 14px;
  border-radius:999px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  background:rgba(15,199,168,.16);
  color:#5BE3C9;
  border:1px solid rgba(15,199,168,.35);
  margin-bottom:20px;
}
.cat-hero h1{
  font-size:clamp(2.25rem,6vw,4.25rem);
  font-weight:800;
  line-height:1.05;
  letter-spacing:-.03em;
  max-width:16em;
}
.cat-hero h1 .ul{
  box-shadow:inset 0 -3px 0 var(--c-highlight);
  padding-bottom:2px;
}
.hero-sub{
  margin-top:22px;
  font-size:clamp(1rem,1.6vw,1.15rem);
  line-height:1.8;
  color:#DAD5CB;
  max-width:620px;
}
.hero-actions{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  margin-top:32px;
}
.hero-stats{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
  margin-top:44px;
  padding-top:26px;
  border-top:1px solid rgba(247,244,238,.16);
}
.hero-stats .stat b{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(1.4rem,3vw,1.9rem);
  color:var(--c-highlight);
  line-height:1.2;
}
.hero-stats .stat span{
  display:block;
  font-size:13px;
  color:var(--c-invert-2);
  letter-spacing:.04em;
  margin-top:4px;
}

/* ============ 分类介绍 ============ */
.intro-grid{display:grid;gap:32px;}
.intro-copy h2{margin-bottom:18px;}
.intro-copy p{color:var(--c-text-2);font-size:16.5px;line-height:1.9;}
.intro-panel{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:26px 24px;
  box-shadow:var(--sh-rest);
}
.intro-panel h3{
  font-size:1.125rem;
  font-weight:600;
  margin-bottom:16px;
  padding-bottom:14px;
  border-bottom:1px solid var(--c-line);
}
.check-list li{
  display:flex;
  gap:12px;
  padding:11px 0;
  border-bottom:1px dashed var(--c-line);
  font-size:15px;
  color:var(--c-text-2);
}
.check-list li:last-child{border-bottom:0;padding-bottom:0;}
.check-list i{color:var(--c-accent);margin-top:5px;font-size:13px;}

/* ============ 大图卡片网格 ============ */
.feature-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:24px;
}
.feature-card{
  display:flex;
  flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  overflow:hidden;
  box-shadow:var(--sh-rest);
  transition:border-color .2s var(--ease),box-shadow .24s var(--ease);
}
.feature-card:hover{border-color:var(--c-ink);box-shadow:var(--sh-hover);}
.feature-figure{
  position:relative;
  aspect-ratio:16/10;
  overflow:hidden;
  background:var(--c-ink-2);
}
.feature-card--tall .feature-figure{aspect-ratio:4/3;}
.feature-figure img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .6s var(--ease);
}
.feature-card:hover .feature-figure img{transform:scale(1.03);}
.feature-figure .chip{
  position:absolute;
  left:12px;top:12px;
  padding:5px 12px;
  border-radius:999px;
  background:rgba(247,244,238,.94);
  color:var(--c-ink);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
}
.feature-body{
  padding:20px 20px 22px;
  display:flex;
  flex-direction:column;
  flex:1;
}
.feature-body h3{
  font-size:1.125rem;
  font-weight:600;
  line-height:1.35;
  margin-bottom:10px;
  position:relative;
  display:inline-block;
}
.feature-body h3::after{
  content:"";
  position:absolute;
  left:0;bottom:-4px;
  width:100%;height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.feature-card:hover .feature-body h3::after{transform:scaleX(1);}
.feature-body p{
  color:var(--c-text-2);
  font-size:14.8px;
  line-height:1.75;
  margin:8px 0 0;
}
.feature-meta{
  margin-top:auto;
  padding-top:16px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--c-text-3);
}
.feature-meta a{color:var(--c-primary);font-weight:700;font-family:var(--font-sans);font-size:13.5px;}
.feature-meta a i{transition:transform .18s var(--ease);margin-left:4px;}
.feature-meta a:hover i{transform:translateX(4px);}

/* ============ 步骤带 ============ */
.steps-band{position:relative;}
.steps-line{
  height:2px;
  background:var(--c-line);
  position:relative;
  margin-bottom:30px;
}
.steps-line::before{
  content:"";
  position:absolute;
  left:0;top:0;
  height:2px;width:38%;
  background:var(--c-primary);
}
.steps-track{
  display:grid;
  grid-auto-flow:column;
  grid-auto-columns:78%;
  gap:18px;
  overflow-x:auto;
  scroll-snap-type:x mandatory;
  padding:2px 24px 14px;
  margin:0 -24px;
  scrollbar-width:thin;
}
.step-item{
  scroll-snap-align:start;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:22px 20px;
  box-shadow:var(--sh-rest);
  transition:border-color .2s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.step-item:hover{border-color:var(--c-ink);box-shadow:var(--sh-hover);}
.step-no{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.16em;
  color:var(--c-primary);
  display:block;
  margin-bottom:12px;
}
.step-item h3{font-size:1.05rem;font-weight:600;margin-bottom:8px;}
.step-item p{font-size:14.6px;color:var(--c-text-2);line-height:1.75;margin:0;}

/* ============ FAQ ============ */
.accordion.faq-c .accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--c-line);
  border-radius:0;
}
.accordion.faq-c .accordion-button{
  background:transparent;
  border-radius:0;
  box-shadow:none;
  padding:24px 52px 24px 0;
  font-size:clamp(1rem,1.4vw,1.125rem);
  font-weight:600;
  color:var(--c-text);
  line-height:1.5;
  position:relative;
}
.accordion.faq-c .accordion-button::before{
  content:"";
  position:absolute;
  left:0;top:14px;bottom:14px;
  width:2px;
  background:var(--c-primary);
  opacity:0;
  transition:opacity .2s var(--ease);
}
.accordion.faq-c .accordion-button:not(.collapsed){color:var(--c-primary);}
.accordion.faq-c .accordion-button:not(.collapsed)::before{opacity:1;padding-left:0;}
.accordion.faq-c .accordion-button:not(.collapsed),
.accordion.faq-c .accordion-button:focus{box-shadow:none;background:transparent;}
.accordion.faq-c .accordion-button::after{
  content:"";
  width:16px;height:16px;
  background:none;
  position:absolute;
  right:8px;top:50%;
  transform:translateY(-50%);
  border-right:2px solid var(--c-ink);
  border-bottom:2px solid var(--c-ink);
  transition:transform .18s var(--ease),border-color .18s var(--ease);
  rotate:45deg;
  margin:0;
}
.accordion.faq-c .accordion-button:not(.collapsed)::after{
  rotate:225deg;
  border-color:var(--c-primary);
}
.accordion.faq-c .accordion-body{
  padding:0 60px 26px 0;
  color:var(--c-text-2);
  font-size:15.5px;
  line-height:1.9;
}

/* ============ 交叉链接 ============ */
.cross-grid{display:grid;grid-template-columns:1fr;gap:20px;}
.cross-card{
  display:flex;
  align-items:center;
  gap:16px;
  padding:22px 20px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  transition:border-color .2s var(--ease),box-shadow .24s var(--ease),transform .24s var(--ease);
}
.cross-card:hover{border-color:var(--c-primary);box-shadow:var(--sh-hover);transform:translateY(-2px);}
.cross-card .ico{
  flex:0 0 46px;
  width:46px;height:46px;
  display:grid;place-items:center;
  border-radius:12px;
  background:rgba(15,199,168,.12);
  color:#08927C;
  font-size:18px;
}
.cross-card h3{font-size:1rem;font-weight:600;margin-bottom:4px;}
.cross-card p{font-size:13.8px;color:var(--c-text-3);margin:0;line-height:1.7;}
.cross-card .arrow{margin-left:auto;color:var(--c-text-3);}
.cross-card:hover .arrow{color:var(--c-primary);}

/* ============ 底部 CTA 带 ============ */
.cta-band{
  position:relative;
  background:var(--c-ink);
  color:var(--c-invert);
  overflow:hidden;
}
.cta-band::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(115deg,rgba(247,244,238,.05) 0 1px,transparent 1px 18px);
  pointer-events:none;
}
.cta-inner{
  position:relative;
  z-index:2;
  padding:64px 0;
  text-align:center;
}
.cta-inner h2{
  font-size:clamp(1.75rem,4.4vw,3rem);
  font-weight:800;
  line-height:1.1;
  letter-spacing:-.03em;
}
.cta-inner p{
  margin:18px auto 0;
  max-width:600px;
  color:var(--c-invert-2);
  font-size:16px;
}
.cta-actions{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  gap:14px;
  margin-top:30px;
}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-ink);color:var(--c-invert);padding:56px 0 0;}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:34px;
  padding-bottom:40px;
}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--c-highlight);color:var(--c-ink);}
.footer-brand strong{display:block;font-size:16.5px;font-weight:800;}
.footer-brand em{
  font-style:normal;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--c-invert-2);
}
.footer-desc{color:var(--c-invert-2);font-size:14.6px;line-height:1.85;max-width:420px;}
.footer-col h4{
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  color:var(--c-invert-2);
  margin-bottom:16px;
  font-family:var(--font-mono);
}
.footer-col li{margin-bottom:11px;}
.footer-col a{
  font-size:14.6px;
  color:#DAD5CB;
  border-bottom:1px solid transparent;
}
.footer-col a:hover{color:var(--c-primary);border-bottom-color:var(--c-primary);}
.footer-bottom{
  border-top:1px solid var(--c-line-dark);
  padding:20px 0 26px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  font-size:13px;
  color:var(--c-invert-2);
  font-family:var(--font-mono);
}
.footer-bottom .legal{display:flex;gap:18px;}
.footer-bottom .legal span{cursor:default;}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .24s var(--ease),transform .24s var(--ease);}
.reveal.in{opacity:1;transform:none;}

/* ============ 断点 ============ */
@media (min-width:576px){
  .container{padding-left:24px;padding-right:24px;}
  .hero-stats{grid-template-columns:repeat(4,1fr);}
  .feature-grid{grid-template-columns:repeat(2,1fr);}
  .cross-grid{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media (min-width:768px){
  .section{padding:72px 0;}
  .hero-inner{padding:76px 0 66px;}
  .steps-track{grid-auto-columns:46%;}
  .cta-inner{padding:80px 0;}
}
@media (min-width:992px){
  body{padding-bottom:0;}
  .tab-bar{display:none;}
  .main-nav{display:flex;}
  .header-cta{display:inline-flex;}
  .menu-toggle{display:none;}
  .drawer{display:none !important;}
  .section{padding:96px 0;}
  .hero-inner{padding:96px 0 84px;}
  .intro-grid{grid-template-columns:7fr 5fr;gap:48px;align-items:start;}
  .steps-track{
    grid-auto-flow:row;
    grid-template-columns:repeat(4,1fr);
    grid-auto-columns:auto;
    overflow:visible;
    padding:2px 0 0;
    margin:0;
  }
  .cross-grid{grid-template-columns:repeat(3,1fr);}
  .footer-grid{grid-template-columns:5fr 3fr 3fr;}
  .feature-grid{grid-template-columns:repeat(3,1fr);}
  .feature-card--wide{grid-column:span 2;}
}
@media (min-width:1200px){
  .section{padding:110px 0;}
  .sec-lead{font-size:17px;}
}
@media (min-width:1400px){
  .container{max-width:1240px;}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
  .feature-card:hover .feature-figure img{transform:none;}
  html{scroll-behavior:auto;}
}