/* roulang page: index */
:root{
  --c-primary:#16332B;
  --c-primary-ink:#0E211C;
  --c-accent:#D9683A;
  --c-mist:#9DB5AA;
  --c-bg:#F5F2EC;
  --c-surface:#FFFFFF;
  --c-line:#DED8CE;
  --c-ink:#1A1D1B;
  --c-ink-2:#5B625E;
  --c-ink-3:#8A908C;
  --c-invert:#F2EFE8;
  --c-ok:#2F7A5A;
  --c-warn:#B4761F;
  --c-err:#B23B3B;
  --radius-card:14px;
  --radius-img:10px;
  --radius-tag:6px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,27,.06);
  --shadow-2:0 24px 60px -32px rgba(20,24,27,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec-pad:96px;
  --gutter:24px;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","Noto Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer;}
input{font-family:inherit;font-size:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px;}
::selection{background:rgba(217,104,58,.22);}

.container{
  width:100%;
  max-width:1240px;
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:var(--sec-pad);}
.section--tight{padding-block:calc(var(--sec-pad) * .66);}
.eyebrow{
  font-size:12.5px;
  letter-spacing:.18em;
  color:var(--c-primary);
  font-weight:700;
  text-transform:uppercase;
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.eyebrow::before{
  content:"";
  width:26px;height:1px;
  background:var(--c-accent);
  display:inline-block;
}
.h2{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(1.75rem,3vw,2.5rem);
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--c-primary);
}
.lead{
  font-size:16px;
  color:var(--c-ink-2);
  line-height:1.85;
  max-width:62ch;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
  flex-wrap:wrap;
}
.section-head .head-text{max-width:66ch;display:flex;flex-direction:column;gap:14px;}
.textlink{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  font-weight:600;
  color:var(--c-primary);
  position:relative;
  padding-bottom:3px;
  white-space:nowrap;
}
.textlink::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:100%;height:1px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 280ms var(--ease);
}
.textlink:hover::after{transform:scaleX(1);}
.textlink .arrow{transition:transform 240ms var(--ease);}
.textlink:hover .arrow{transform:translateX(2px);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:14px 28px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  transition:transform 240ms var(--ease),background-color 240ms var(--ease),color 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
  border:1px solid transparent;
  cursor:pointer;
}
.btn-primary{background:var(--c-accent);color:#fff;box-shadow:0 10px 24px -16px rgba(217,104,58,.85);}
.btn-primary:hover{background:var(--c-primary-ink);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-outline:hover{background:var(--c-primary);color:var(--c-invert);transform:translateY(-2px);}
.btn-soft{background:var(--c-surface);color:var(--c-primary);border-color:var(--c-line);box-shadow:var(--shadow-1);}
.btn-soft:hover{border-color:var(--c-primary);transform:translateY(-2px);}
.btn-sm{min-height:42px;padding:10px 20px;font-size:14px;}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(245,242,236,.86);
  border-bottom:1px solid transparent;
  transition:background-color 260ms var(--ease),border-color 260ms var(--ease),box-shadow 260ms var(--ease);
}
.site-header.is-scrolled{
  background:rgba(245,242,236,.92);
  border-bottom-color:var(--c-line);
  box-shadow:0 6px 24px -22px rgba(20,24,27,.6);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.header-inner{
  height:72px;
  display:flex;
  align-items:center;
  gap:28px;
  transition:height 260ms var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex:none;}
.brand-mark{width:30px;height:30px;flex:none;}
.brand-text{
  font-size:18px;
  font-weight:700;
  letter-spacing:.04em;
  color:var(--c-primary);
  display:inline-flex;
  align-items:baseline;
  gap:2px;
  line-height:1;
}
.brand-pre{
  font-size:10.5px;
  letter-spacing:.12em;
  color:var(--c-ink-3);
  font-weight:700;
  text-transform:lowercase;
}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--c-mist);flex:none;margin-left:2px;}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px;}
.nav-link{
  position:relative;
  font-size:14px;
  font-weight:500;
  color:var(--c-ink-2);
  padding-block:6px;
  transition:color 220ms var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform 240ms var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:700;}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:14px;margin-left:auto;}
.search-box{
  position:relative;
  display:flex;
  align-items:center;
  width:220px;
  transition:width 280ms var(--ease);
}
.search-box input{
  width:100%;
  height:40px;
  border-radius:var(--radius-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  padding:0 16px 0 38px;
  font-size:13.5px;
  color:var(--c-ink);
  transition:border-color 220ms var(--ease),box-shadow 220ms var(--ease);
}
.search-box input::placeholder{color:var(--c-ink-3);}
.search-box input:focus{
  outline:none;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(22,51,43,.10);
}
.search-box .search-icon{
  position:absolute;left:13px;top:50%;transform:translateY(-50%);
  width:15px;height:15px;color:var(--c-ink-3);pointer-events:none;
}
.search-box:focus-within{width:260px;}
.search-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:50%;border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-primary);}
.btn-login{
  font-size:14px;
  font-weight:600;
  color:var(--c-primary);
  padding:8px 4px;
  border-bottom:1px solid transparent;
  transition:border-color 220ms var(--ease),color 220ms var(--ease);
}
.btn-login:hover{border-bottom-color:var(--c-accent);color:var(--c-accent);}
.menu-toggle{display:none;width:44px;height:44px;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-primary);}

/* drawer */
.drawer{
  position:fixed;
  inset:0;
  z-index:90;
  background:var(--c-bg);
  padding:20px var(--gutter) 32px;
  display:flex;
  flex-direction:column;
  gap:8px;
  transform:translateY(-102%);
  transition:transform 340ms var(--ease);
  overflow-y:auto;
}
.drawer.open{transform:translateY(0);}
.drawer-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:18px;border-bottom:1px solid var(--c-line);}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-top:16px;}
.drawer-nav a{
  font-size:20px;
  font-weight:600;
  color:var(--c-primary);
  padding:16px 0;
  border-bottom:1px solid var(--c-line);
}
.drawer-nav a.active{color:var(--c-accent);}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px;padding-top:28px;}
.drawer-close{width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--c-line);background:var(--c-surface);color:var(--c-primary);}

/* ---------- hero ---------- */
.hero{padding-block:72px 88px;position:relative;overflow:hidden;}
.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:center;
}
.hero-copy{display:flex;flex-direction:column;gap:24px;}
.hero h1{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(2.5rem,5.2vw,4.2rem);
  line-height:1.06;
  letter-spacing:-.02em;
  color:var(--c-primary);
  max-width:20ch;
}
.hero h1 .accent-word{color:var(--c-accent);}
.hero-sub{
  font-size:17px;
  line-height:1.8;
  color:var(--c-ink-2);
  max-width:44ch;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;align-items:center;}
.hero-stats{
  display:flex;
  gap:40px;
  flex-wrap:wrap;
  padding-top:28px;
  margin-top:8px;
  border-top:1px solid var(--c-line);
}
.stat{display:flex;flex-direction:column;gap:4px;}
.stat-num{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:28px;
  line-height:1.1;
  color:var(--c-primary);
  font-variant-numeric:tabular-nums;
  display:flex;
  align-items:baseline;
  gap:3px;
}
.stat-num small{font-size:13px;font-weight:600;font-family:var(--font-sans);color:var(--c-ink-2);}
.stat-label{font-size:12.5px;color:var(--c-ink-3);letter-spacing:.06em;}
.hero-visual{position:relative;}
.hero-visual::before{
  content:"";
  position:absolute;
  inset:18px -18px -18px 18px;
  border:1px solid var(--c-mist);
  border-radius:var(--radius-img);
  z-index:0;
}
.hero-figure{
  position:relative;
  z-index:1;
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-2);
  background:var(--c-primary-ink);
}
.hero-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  transition:transform 700ms var(--ease);
}
.hero-figure:hover img{transform:scale(1.04);}
.float-tag{
  position:absolute;
  z-index:2;
  left:-14px;
  bottom:26px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-pill);
  padding:11px 20px;
  display:flex;
  align-items:center;
  gap:10px;
  box-shadow:var(--shadow-1);
  animation:floaty 6s ease-in-out infinite;
}
.float-tag .dot{width:8px;height:8px;border-radius:50%;background:var(--c-accent);}
.float-tag span{font-size:13px;font-weight:600;color:var(--c-primary);white-space:nowrap;}
@keyframes floaty{
  0%,100%{transform:translateY(0);}
  50%{transform:translateY(-6px);}
}

/* ---------- value ---------- */
.value-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
}
.value-band{
  grid-column:1/-1;
  display:flex;
  align-items:center;
  gap:28px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-left:3px solid var(--c-accent);
  border-radius:var(--radius-card);
  padding:26px 30px;
  box-shadow:var(--shadow-1);
}
.value-band .band-icon{
  width:52px;height:52px;flex:none;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(157,181,170,.20);color:var(--c-primary);
}
.value-band h3{font-size:1.2rem;font-weight:700;color:var(--c-primary);margin-bottom:4px;}
.value-band p{font-size:15px;color:var(--c-ink-2);line-height:1.75;}
.value-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease),border-color 280ms var(--ease);
  display:flex;
  flex-direction:column;
  gap:12px;
}
.value-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-mist);}
.value-card .card-no{
  font-family:var(--font-num);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--c-accent);
  font-variant-numeric:tabular-nums;
}
.value-card h3{font-size:1.35rem;font-weight:700;color:var(--c-primary);line-height:1.4;}
.value-card p{font-size:15px;color:var(--c-ink-2);line-height:1.8;}

/* ---------- capability grid 7/5 ---------- */
.cap-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:24px;
  align-items:start;
}
.cap-main{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease);
  display:flex;
  flex-direction:column;
}
.cap-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.cap-main .thumb{overflow:hidden;background:var(--c-primary-ink);}
.cap-main .thumb img{width:100%;aspect-ratio:3/2;object-fit:cover;transition:transform 600ms var(--ease);}
.cap-main:hover .thumb img{transform:scale(1.04);}
.cap-main .cap-body{padding:28px;display:flex;flex-direction:column;gap:14px;}
.cap-main h3{font-family:var(--font-serif);font-size:1.55rem;font-weight:900;color:var(--c-primary);line-height:1.3;}
.cap-list{display:flex;flex-direction:column;gap:10px;}
.cap-list li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--c-ink-2);
  line-height:1.7;
}
.cap-list li::before{
  content:"";
  width:6px;height:6px;border-radius:50%;
  background:var(--c-accent);
  flex:none;
  margin-top:9px;
}
.cap-side{display:flex;flex-direction:column;gap:24px;}
.cap-small{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  padding:26px;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  gap:10px;
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease),border-color 280ms var(--ease);
}
.cap-small:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-mist);}
.cap-small .icon{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(22,51,43,.07);color:var(--c-primary);
  margin-bottom:4px;
}
.cap-small h3{font-size:1.15rem;font-weight:700;color:var(--c-primary);}
.cap-small p{font-size:14.5px;color:var(--c-ink-2);line-height:1.78;}

/* ---------- scenes ---------- */
.scene-wrap{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:48px;
  align-items:center;
}
.scene-list{display:flex;flex-direction:column;}
.scene-item{
  text-align:left;
  padding:20px 0 20px 20px;
  border-left:3px solid transparent;
  transition:border-color 240ms var(--ease),background-color 240ms var(--ease);
  display:flex;
  flex-direction:column;
  gap:6px;
  width:100%;
}
.scene-item + .scene-item{border-top:1px solid var(--c-line);}
.scene-item strong{font-size:1.15rem;font-weight:700;color:var(--c-ink-2);transition:color 220ms var(--ease);}
.scene-item span{font-size:14px;color:var(--c-ink-3);line-height:1.7;}
.scene-item:hover strong{color:var(--c-primary);}
.scene-item.is-active{border-left-color:var(--c-accent);background:rgba(217,104,58,.045);}
.scene-item.is-active strong{color:var(--c-primary);}
.scene-visual{
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  box-shadow:var(--shadow-1);
}
.scene-visual img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:opacity 260ms var(--ease),transform 600ms var(--ease);}
.scene-visual .scene-caption{padding:22px 26px;border-top:1px solid var(--c-line);}
.scene-visual .scene-caption p{font-size:15px;color:var(--c-ink-2);line-height:1.8;}

/* ---------- cases ---------- */
.case-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:24px;
  align-items:stretch;
}
.case-main{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  overflow:hidden;
  box-shadow:var(--shadow-1);
  display:flex;
  flex-direction:column;
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease);
}
.case-main:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.case-main .thumb{overflow:hidden;background:var(--c-primary-ink);}
.case-main .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 600ms var(--ease);}
.case-main:hover .thumb img{transform:scale(1.04);}
.case-main .case-body{padding:28px;display:flex;flex-direction:column;gap:16px;flex:1;}
.quote{
  font-family:var(--font-serif);
  font-size:1.35rem;
  line-height:1.6;
  color:var(--c-primary);
  font-weight:900;
}
.case-org{font-size:13px;color:var(--c-ink-3);letter-spacing:.04em;}
.case-metrics{display:flex;gap:32px;padding-top:16px;border-top:1px solid var(--c-line);flex-wrap:wrap;}
.case-metrics .m-num{
  font-family:var(--font-serif);
  font-size:26px;font-weight:900;color:var(--c-accent);
  font-variant-numeric:tabular-nums;line-height:1.15;
}
.case-metrics .m-label{font-size:12.5px;color:var(--c-ink-3);}
.case-side{display:flex;flex-direction:column;gap:24px;}
.case-small{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  padding:24px;
  display:flex;
  flex-direction:column;
  gap:10px;
  box-shadow:var(--shadow-1);
  flex:1;
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease),border-color 280ms var(--ease);
}
.case-small:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-mist);}
.case-small h3{font-size:1.05rem;font-weight:700;color:var(--c-primary);line-height:1.5;}
.case-small p{font-size:14px;color:var(--c-ink-2);line-height:1.75;}
.tag-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:8px;}
.tag{
  display:inline-flex;
  align-items:center;
  font-size:12.5px;
  padding:5px 12px;
  border-radius:var(--radius-tag);
  background:rgba(157,181,170,.22);
  color:var(--c-primary);
  font-weight:600;
  letter-spacing:.02em;
}
.tag--accent{
  background:transparent;
  border:1px solid var(--c-accent);
  color:var(--c-accent);
}

/* ---------- plans ---------- */
.plan-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:24px;
  align-items:stretch;
}
.plan{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  padding:32px 28px;
  display:flex;
  flex-direction:column;
  gap:16px;
  box-shadow:var(--shadow-1);
  transition:transform 280ms var(--ease),box-shadow 280ms var(--ease);
  position:relative;
}
.plan:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);}
.plan--rec{
  border-color:var(--c-primary);
  transform:scale(1.03);
  z-index:1;
  box-shadow:var(--shadow-2);
}
.plan--rec:hover{transform:scale(1.03) translateY(-4px);}
.plan-badge{
  position:absolute;
  top:-13px;left:28px;
  background:var(--c-primary);
  color:var(--c-invert);
  font-size:12.5px;
  font-weight:700;
  padding:5px 14px;
  border-radius:var(--radius-pill);
  letter-spacing:.06em;
}
.plan h3{font-size:1.25rem;font-weight:700;color:var(--c-primary);}
.plan .plan-for{font-size:13.5px;color:var(--c-ink-3);line-height:1.7;}
.plan .price{
  font-family:var(--font-serif);
  font-size:40px;
  font-weight:900;
  color:var(--c-primary);
  line-height:1.1;
  font-variant-numeric:tabular-nums;
  display:flex;
  align-items:baseline;
  gap:6px;
}
.plan .price small{font-family:var(--font-sans);font-size:13.5px;font-weight:600;color:var(--c-ink-3);}
.plan ul{display:flex;flex-direction:column;gap:10px;flex:1;}
.plan li{
  display:flex;
  gap:10px;
  font-size:14.5px;
  color:var(--c-ink-2);
  line-height:1.7;
}
.plan li svg{flex:none;margin-top:5px;color:var(--c-accent);}
.plan .btn{width:100%;margin-top:8px;}

/* ---------- news ---------- */
.news-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:20px;
}
.news-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--radius-card);
  padding:24px 26px;
  display:flex;
  flex-direction:column;
  gap:10px;
  box-shadow:var(--shadow-1);
  transition:transform 260ms var(--ease),box-shadow 260ms var(--ease),border-color 260ms var(--ease),background-color 260ms var(--ease);
}
.news-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-mist);}
.news-card .news-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap;}
.news-card h3{
  font-size:1.06rem;
  font-weight:700;
  color:var(--c-primary);
  line-height:1.55;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-card p{
  font-size:14px;
  color:var(--c-ink-2);
  line-height:1.75;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.news-time{font-size:12.5px;color:var(--c-ink-3);letter-spacing:.02em;font-variant-numeric:tabular-nums;}
.empty-state{
  grid-column:1/-1;
  min-height:240px;
  border:1px dashed var(--c-line);
  border-radius:var(--radius-card);
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:12px;
  padding:32px;
  text-align:center;
  background:rgba(255,255,255,.5);
}
.empty-state svg{color:var(--c-mist);}
.empty-state p{font-size:14px;color:var(--c-ink-3);}

/* ---------- faq ---------- */
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  padding:24px 0;
  text-align:left;
  font-size:17px;
  font-weight:600;
  color:var(--c-primary);
  transition:color 220ms var(--ease);
}
.faq-q:hover{color:var(--c-accent);}
.faq-icon{
  flex:none;
  width:22px;height:22px;
  position:relative;
  transition:transform 260ms var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  transition:background-color 220ms var(--ease);
}
.faq-icon::before{top:50%;left:0;width:22px;height:1.5px;transform:translateY(-50%);}
.faq-icon::after{left:50%;top:0;height:22px;width:1.5px;transform:translateX(-50%);}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-item.open .faq-icon::before,.faq-item.open .faq-icon::after{background:var(--c-accent);}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-a p{
  font-size:15px;
  line-height:1.85;
  color:var(--c-ink-2);
  max-width:56ch;
  padding-bottom:26px;
}

/* ---------- cta ---------- */
.cta-band{
  background:var(--c-primary-ink);
  color:var(--c-invert);
  position:relative;
  overflow:hidden;
  padding-block:96px;
}
.cta-band::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(242,239,232,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(242,239,232,.04) 1px,transparent 1px);
  background-size:64px 64px;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-family:var(--font-serif);
  font-size:clamp(1.6rem,2.8vw,2.25rem);
  font-weight:900;
  line-height:1.25;
  letter-spacing:-.01em;
  max-width:20ch;
}
.cta-inner p{font-size:15px;color:rgba(242,239,232,.76);margin-top:12px;max-width:46ch;line-height:1.8;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-outline{border-color:rgba(242,239,232,.5);color:var(--c-invert);}
.cta-band .btn-outline:hover{background:var(--c-invert);color:var(--c-primary-ink);border-color:var(--c-invert);}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-primary-ink);
  color:var(--c-invert);
  padding-block:72px 0;
}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:48px;
  padding-bottom:56px;
  border-bottom:1px solid rgba(157,181,170,.28);
}
.footer-brand{display:flex;flex-direction:column;gap:16px;}
.footer-brand .brand-text{color:var(--c-invert);}
.footer-brand .brand-pre{color:rgba(242,239,232,.55);}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(242,239,232,.65);max-width:32ch;}
.footer-col h3{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--c-mist);
  font-weight:700;
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px;}
.footer-col a{
  font-size:14px;
  color:rgba(242,239,232,.78);
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:color 220ms var(--ease),transform 220ms var(--ease);
}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-note{font-size:14px;color:rgba(242,239,232,.65);line-height:1.85;}
.footer-bottom{
  padding-block:24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:13px;
  color:rgba(242,239,232,.55);
  letter-spacing:.02em;
}
.footer-bottom .dot-sep{color:rgba(242,239,232,.3);margin-inline:8px;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 520ms var(--ease),transform 520ms var(--ease);}
.reveal.is-in{opacity:1;transform:translateY(0);}

/* ---------- responsive ---------- */
@media (max-width:1199px){
  :root{--sec-pad:72px;}
  .main-nav{gap:20px;}
  .search-box{display:none;}
  .search-toggle{display:inline-flex;}
  .hero-grid{gap:40px;}
}
@media (max-width:991px){
  :root{--sec-pad:56px;}
  .main-nav{display:none;}
  .menu-toggle{display:inline-flex;}
  .btn-login{display:none;}
  .hero{padding-block:48px 64px;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero h1{max-width:none;}
  .hero-visual::before{inset:14px -14px -14px 14px;}
  .cap-grid,.case-grid,.scene-wrap{grid-template-columns:1fr;gap:28px;}
  .plan-grid{grid-template-columns:1fr;gap:28px;}
  .plan--rec{transform:none;}
  .plan--rec:hover{transform:translateY(-4px);}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{gap:28px;}
  .cta-band{padding-block:64px;}
}
@media (max-width:767px){
  :root{--sec-pad:44px;--gutter:20px;}
  body{font-size:16px;}
  .header-inner{height:64px;}
  .value-grid{grid-template-columns:1fr;}
  .news-grid{grid-template-columns:1fr;}
  .value-band{flex-direction:column;align-items:flex-start;gap:16px;}
  .section-head{margin-bottom:32px;gap:18px;}
  .hero-stats{gap:28px;}
  .hero-actions .btn{flex:1 1 auto;}
  .float-tag{left:8px;bottom:12px;padding:9px 16px;}
  .case-metrics{gap:24px;}
  .footer-top{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .footer-bottom{justify-content:flex-start;}
  .faq-q{font-size:16px;padding:20px 0;}
  .scene-item{padding:16px 0 16px 16px;}
  .drawer-nav a{font-size:18px;}
}
@media (max-width:480px){
  .brand-text{font-size:16px;}
  .hero h1{font-size:2.05rem;}
  .hero-sub{font-size:15.5px;}
  .stat-num{font-size:24px;}
  .plan .price{font-size:34px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .news-card{padding:20px;}
  .value-card,.cap-small,.case-small{padding:22px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: article */
:root{
  --c-primary:#16332B;
  --c-primary-ink:#0E211C;
  --c-accent:#D9683A;
  --c-mist:#9DB5AA;
  --c-bg:#F5F2EC;
  --c-surface:#FFFFFF;
  --c-line:#DED8CE;
  --c-soft:#FBFAF6;
  --ink:#1A1D1B;
  --ink-2:#5B625E;
  --ink-3:#8A908C;
  --ok:#2F7A5A;
  --warn:#B4761F;
  --err:#B23B3B;
  --r-card:14px;
  --r-img:10px;
  --r-tag:6px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,27,.06);
  --shadow-2:0 24px 60px -32px rgba(20,24,27,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::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:1.85;
  color:var(--ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer;}
input{font:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px;}
::selection{background:rgba(217,104,58,.2);}

.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:768px){.container{padding:0 20px;}}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(245,242,236,.82);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .28s var(--ease),background .28s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);background:rgba(245,242,236,.94);}
.header-inner{
  display:flex;
  align-items:center;
  gap:36px;
  height:72px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{width:30px;height:30px;flex-shrink:0;transition:transform .32s var(--ease);}
.brand:hover .brand-mark{transform:rotate(-14deg);}
.brand-text{
  font-family:var(--font-sans);
  font-weight:700;
  font-size:18px;
  letter-spacing:.04em;
  color:var(--c-primary);
  white-space:nowrap;
}
.brand-pre{
  font-family:var(--font-num);
  font-size:11px;
  font-weight:600;
  letter-spacing:.08em;
  color:var(--c-mist);
  margin-right:3px;
  vertical-align:baseline;
}
.brand-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--c-mist);
  flex-shrink:0;
}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;
  font-size:14px;
  font-weight:500;
  color:var(--ink-2);
  padding:6px 0;
  white-space:nowrap;
  transition:color .24s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s var(--ease);
}
.nav-link:hover{color:var(--c-primary);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);}
.nav-link.active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:16px;margin-left:auto;}
.search-box{
  display:flex;
  align-items:center;
  gap:8px;
  width:220px;
  padding:8px 14px;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  transition:width .3s var(--ease),border-color .3s var(--ease),box-shadow .3s var(--ease);
}
.search-box:focus-within{width:260px;border-color:var(--c-primary);box-shadow:var(--shadow-1);}
.search-box svg{flex-shrink:0;color:var(--ink-3);}
.search-box input{
  width:100%;
  border:0;
  background:transparent;
  outline:none;
  font-size:14px;
  color:var(--ink);
}
.search-box input::placeholder{color:var(--ink-3);}
.link-login{
  font-size:14px;
  font-weight:500;
  color:var(--ink-2);
  padding:4px 2px;
  transition:color .24s var(--ease);
}
.link-login:hover{color:var(--c-primary);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  padding:14px 28px;
  min-height:44px;
  transition:transform .26s var(--ease),background .26s var(--ease),color .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.btn-accent{background:var(--c-accent);color:#FFFFFF;box-shadow:0 10px 24px -16px rgba(217,104,58,.9);}
.btn-accent:hover{background:var(--c-primary-ink);transform:translateY(-2px);box-shadow:var(--shadow-2);}
.btn-outline{background:transparent;color:var(--c-primary);border:1px solid var(--c-primary);}
.btn-outline:hover{background:var(--c-primary);color:#F2EFE8;transform:translateY(-2px);}
.btn-brand{background:var(--c-primary);color:#F2EFE8;padding:11px 22px;font-size:14px;min-height:40px;}
.btn-brand:hover{background:var(--c-accent);transform:translateY(-2px);}
.btn-sm{padding:11px 22px;font-size:14px;min-height:40px;}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;color:var(--c-primary);
  position:relative;padding-bottom:2px;
}
.btn-text::after{
  content:"";position:absolute;left:0;bottom:0;height:1px;width:100%;
  background:currentColor;transform:scaleX(0);transform-origin:left center;
  transition:transform .3s var(--ease);
}
.btn-text:hover::after{transform:scaleX(1);}
.btn-text:hover .arrow{transform:translateX(2px);}
.arrow{display:inline-block;transition:transform .26s var(--ease);}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-img);
  background:var(--c-surface);
  color:var(--c-primary);
}
.search-toggle{
  display:none;
  width:44px;height:44px;
  align-items:center;justify-content:center;
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  background:var(--c-surface);
  color:var(--c-primary);
}
.drawer{
  position:fixed;
  inset:0;
  z-index:120;
  display:none;
  flex-direction:column;
  background:var(--c-bg);
  padding:20px 24px 32px;
  overflow-y:auto;
}
.drawer.open{display:flex;}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;}
.drawer-close{
  width:44px;height:44px;display:flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-img);background:var(--c-surface);color:var(--c-primary);
}
.drawer-nav{display:flex;flex-direction:column;gap:2px;margin-bottom:28px;}
.drawer-nav a{
  font-size:20px;font-weight:600;color:var(--c-primary);
  padding:16px 0;border-bottom:1px solid var(--c-line);
}
.drawer-nav a.is-current{color:var(--c-accent);}
.drawer-search{
  display:flex;align-items:center;gap:8px;
  padding:12px 16px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-pill);margin-bottom:20px;
}
.drawer-search input{border:0;background:transparent;outline:none;width:100%;font-size:15px;}
.drawer-actions{display:flex;flex-direction:column;gap:12px;}

@media (max-width:1199px){
  .search-box{display:none;}
  .search-toggle{display:flex;}
  .header-actions{gap:10px;}
}
@media (max-width:991px){
  .main-nav{display:none;}
  .link-login{display:none;}
  .nav-toggle{display:flex;}
  .btn-brand{display:none;}
}

/* ---------- breadcrumb ---------- */
.crumb-bar{padding:26px 0 0;}
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:13px;color:var(--ink-3);letter-spacing:.02em;
}
.breadcrumb a{color:var(--ink-2);transition:color .22s var(--ease);}
.breadcrumb a:hover{color:var(--c-primary);text-decoration:underline;text-underline-offset:3px;}
.breadcrumb .sep{color:var(--c-mist);}
.breadcrumb .current{
  color:var(--ink-3);
  max-width:300px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
@media (max-width:520px){.breadcrumb .current{max-width:160px;}}

/* ---------- article ---------- */
.article-section{padding:36px 0 72px;}
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,760px) 220px;
  gap:72px;
  justify-content:center;
  align-items:start;
}
.article-main{min-width:0;}
.article-head .badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  font-size:13px;
  font-weight:500;
  border-radius:var(--r-tag);
  background:rgba(157,181,170,.22);
  color:var(--c-primary);
  letter-spacing:.02em;
}
.article-head h1{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(1.65rem,3.2vw,2.15rem);
  line-height:1.32;
  letter-spacing:-.01em;
  color:var(--c-primary);
  margin:20px 0 18px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:13px;color:var(--ink-3);letter-spacing:.02em;
}
.article-meta .vline{width:1px;height:12px;background:var(--c-line);}
.article-meta time{font-variant-numeric:tabular-nums;}
.head-rule{height:1px;background:var(--c-line);margin:26px 0 34px;}

.article-body{
  font-size:17px;
  line-height:1.9;
  color:var(--ink);
  word-break:break-word;
}
.article-body > *:first-child{margin-top:0;}
.article-body p{margin:0 0 1.1em;}
.article-body h2{
  position:relative;
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(1.35rem,2.4vw,1.7rem);
  line-height:1.36;
  color:var(--c-primary);
  margin:52px 0 20px;
  padding-left:17px;
  scroll-margin-top:96px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.2em;bottom:.2em;
  width:4px;border-radius:2px;background:var(--c-accent);
}
.article-body h3{
  font-size:20px;font-weight:700;line-height:1.45;
  color:var(--c-primary);margin:34px 0 14px;
  scroll-margin-top:96px;
}
.article-body h4{font-size:17px;font-weight:700;margin:26px 0 10px;color:var(--ink);}
.article-body ul,.article-body ol{padding-left:1.4em;margin:0 0 1.15em;}
.article-body ul li{list-style:disc;margin:.45em 0;line-height:1.85;}
.article-body ol li{list-style:decimal;margin:.45em 0;line-height:1.85;}
.article-body li::marker{color:var(--c-mist);}
.article-body blockquote{
  margin:30px 0;
  padding:18px 24px;
  border-left:3px solid var(--c-accent);
  background:var(--c-soft);
  border-radius:0 var(--r-img) var(--r-img) 0;
  font-family:var(--font-serif);
  font-size:18px;
  line-height:1.8;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{
  max-width:100%;height:auto;
  border-radius:var(--r-img);
  margin:28px auto;
}
.article-body figure{margin:28px 0;}
.article-body figcaption{
  font-size:13px;color:var(--ink-3);text-align:center;
  margin-top:10px;letter-spacing:.02em;
}
.article-body a{
  color:var(--c-primary);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
  transition:color .22s var(--ease);
}
.article-body a:hover{color:var(--c-accent);}
.article-body table{
  width:100%;border-collapse:collapse;
  margin:28px 0;font-size:15px;
  border:1px solid var(--c-line);
}
.article-body thead th{
  background:var(--c-soft);
  font-weight:700;
  color:var(--c-primary);
  text-align:left;
}
.article-body th,.article-body td{
  border:1px solid var(--c-line);
  padding:11px 14px;
  line-height:1.7;
}
.article-body hr{border:0;height:1px;background:var(--c-line);margin:36px 0;}

.article-foot{
  margin-top:48px;
  padding-top:28px;
  border-top:1px solid var(--c-line);
}
.tag-row{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-bottom:22px;}
.tag-row .tag-label{font-size:13px;color:var(--ink-3);letter-spacing:.02em;margin-right:2px;}
.tag{
  display:inline-flex;align-items:center;
  padding:5px 12px;
  font-size:13px;
  border-radius:var(--r-tag);
  border:1px solid var(--c-line);
  color:var(--ink-2);
  background:var(--c-surface);
  transition:border-color .24s var(--ease),color .24s var(--ease),transform .24s var(--ease);
}
.tag:hover{border-color:var(--c-accent);color:var(--c-accent);transform:translateY(-2px);}
.foot-actions{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;}

.empty-state{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:14px;
  min-height:260px;
  padding:40px 24px;
  border:1px dashed var(--c-line);
  border-radius:var(--r-card);
  background:var(--c-soft);
  text-align:center;
}
.empty-state svg{color:var(--c-mist);}
.empty-state p{font-size:14px;color:var(--ink-2);margin:0;}

/* ---------- toc ---------- */
.toc{
  position:sticky;
  top:100px;
  padding-left:20px;
  border-left:1px solid var(--c-line);
}
.toc h2{
  font-size:12px;
  letter-spacing:.18em;
  font-weight:700;
  color:var(--ink-3);
  margin-bottom:14px;
}
.toc-list{display:flex;flex-direction:column;gap:2px;}
.toc-list a{
  display:block;
  position:relative;
  font-size:13px;
  line-height:1.7;
  color:var(--ink-2);
  padding:6px 0 6px 12px;
  transition:color .22s var(--ease);
}
.toc-list a::before{
  content:"";position:absolute;left:-21px;top:8px;bottom:8px;width:2px;
  background:transparent;transition:background .22s var(--ease);
}
.toc-list a.is-h3{padding-left:24px;color:var(--ink-3);}
.toc-list a:hover{color:var(--c-primary);}
.toc-list a.current{color:var(--c-primary);font-weight:600;}
.toc-list a.current::before{background:var(--c-accent);}
@media (max-width:1279px){
  .article-layout{grid-template-columns:minmax(0,760px);gap:0;}
  .toc{display:none;}
}
@media (max-width:768px){
  .article-section{padding:26px 0 56px;}
  .article-body{font-size:16px;line-height:1.85;}
  .article-body h2{margin-top:40px;}
}
@media (max-width:480px){
  .article-head h1{font-size:1.55rem;}
}

/* ---------- related ---------- */
.related{padding:0 0 96px;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:32px;
  flex-wrap:wrap;
}
.section-head h2{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(1.5rem,2.6vw,2rem);
  line-height:1.25;
  color:var(--c-primary);
  letter-spacing:-.01em;
}
.section-head .sub{font-size:14px;color:var(--ink-2);margin-top:8px;}
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.rel-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(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFC7B9;}
.rel-thumb{overflow:hidden;aspect-ratio:3/2;background:var(--c-soft);}
.rel-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.rel-card:hover .rel-thumb img{transform:scale(1.04);}
.rel-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.rel-body h3{
  font-size:17px;font-weight:700;line-height:1.55;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-body p{
  font-size:14px;line-height:1.75;color:var(--ink-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rel-meta{
  margin-top:auto;
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--ink-3);letter-spacing:.02em;
}
.rel-meta .badge{
  padding:3px 9px;border-radius:var(--r-tag);font-size:12px;
  background:rgba(157,181,170,.22);color:var(--c-primary);
}
@media (max-width:991px){.rel-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
@media (max-width:768px){
  .related{padding:0 0 56px;}
  .rel-grid{grid-template-columns:1fr;gap:16px;}
}

/* ---------- cta ---------- */
.cta-band{
  background:var(--c-primary-ink);
  color:#F2EFE8;
  position:relative;
  overflow:hidden;
}
.cta-band::before{
  content:"";
  position:absolute;inset:0;
  background-image:linear-gradient(rgba(242,239,232,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(242,239,232,.04) 1px,transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cta-inner{
  position:relative;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  padding:56px 0;
  flex-wrap:wrap;
}
.cta-inner h2{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(1.4rem,2.4vw,1.85rem);
  line-height:1.3;
  letter-spacing:-.01em;
}
.cta-inner p{font-size:15px;line-height:1.8;color:rgba(242,239,232,.76);margin-top:12px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-actions .btn-outline{border-color:rgba(242,239,232,.5);color:#F2EFE8;}
.cta-actions .btn-outline:hover{background:#F2EFE8;color:var(--c-primary-ink);border-color:#F2EFE8;}
@media (max-width:768px){
  .cta-inner{padding:44px 0;}
  .cta-actions{width:100%;}
  .cta-actions .btn{flex:1 1 auto;}
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--c-primary-ink);
  color:#F2EFE8;
  padding:64px 0 28px;
  border-top:1px solid rgba(157,181,170,.22);
}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(157,181,170,.18);
}
.footer-brand .brand-text{color:#F2EFE8;font-size:18px;}
.footer-brand .brand-pre{color:var(--c-mist);}
.footer-brand p{
  font-size:14px;line-height:1.85;color:rgba(242,239,232,.7);
  margin-top:16px;max-width:320px;
}
.footer-col h3{
  font-size:13px;font-weight:700;letter-spacing:.16em;
  color:var(--c-mist);margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{
  font-size:14px;color:rgba(242,239,232,.78);
  transition:color .24s var(--ease),transform .24s var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px);}
.footer-note{font-size:14px;line-height:1.85;color:rgba(242,239,232,.68);}
.footer-bottom{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  padding-top:24px;
  font-size:13px;color:rgba(242,239,232,.55);letter-spacing:.02em;
}
.dot-sep{color:rgba(157,181,170,.6);}
@media (max-width:991px){
  .footer-top{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .site-footer{padding:44px 0 24px;}
  .footer-top{grid-template-columns:1fr;gap:28px;padding-bottom:32px;}
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;scroll-behavior:auto !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category1 */
/* ============ tokens ============ */
:root{
  --c-primary:#16332B;
  --c-primary-ink:#0E211C;
  --c-accent:#D9683A;
  --c-mist:#9DB5AA;
  --c-bg:#F5F2EC;
  --c-surface:#FFFFFF;
  --c-line:#DED8CE;
  --c-paper-soft:#FBFAF6;
  --text:#1A1D1B;
  --text-2:#5B625E;
  --text-3:#8A908C;
  --ok:#2F7A5A;
  --warn:#B4761F;
  --err:#B23B3B;
  --r-card:14px;
  --r-img:10px;
  --r-input:10px;
  --r-tag:6px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,27,.06);
  --shadow-2:0 24px 60px -32px rgba(20,24,27,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
}
/* ============ base reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img{max-width:100%;display:block;height:auto}
a{color:var(--c-primary);text-decoration:none}
button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input{font-family:inherit;font-size:inherit}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px}
::selection{background:rgba(217,104,58,.22)}
/* ============ layout ============ */
.container{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){.container{max-width:1320px}}
.section{padding:96px 0}
@media (max-width:1199px){.section{padding:72px 0}}
@media (max-width:991px){.section{padding:56px 0}}
@media (max-width:767px){.section{padding:44px 0}.container{padding:0 20px}}
/* ============ header ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:rgba(245,242,236,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color .28s var(--ease),background .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  background:rgba(245,242,236,.94);
  box-shadow:0 10px 30px -26px rgba(20,24,27,.5);
}
.header-inner{
  display:flex;
  align-items:center;
  gap:28px;
  height:72px;
  transition:height .28s var(--ease);
}
.site-header.is-scrolled .header-inner{height:64px}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--c-primary);
  flex:none;
}
.brand-mark{width:30px;height:30px;flex:none;color:var(--c-primary)}
.brand-text{
  font-family:var(--font-sans);
  font-weight:700;
  font-size:18px;
  letter-spacing:.04em;
  line-height:1;
  color:var(--c-primary);
}
.brand-pre{
  font-size:11px;
  letter-spacing:.08em;
  color:var(--text-3);
  font-weight:500;
  margin-right:3px;
}
.brand-dot{
  width:8px;height:8px;border-radius:50%;
  background:var(--c-mist);
  display:inline-block;flex:none;
}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  flex:1;
  margin-left:12px;
}
.nav-link{
  position:relative;
  font-size:14px;
  font-weight:500;
  color:var(--text-2);
  padding:8px 0;
  transition:color .24s var(--ease);
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--c-primary);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .26s var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.active{color:var(--c-primary);font-weight:700}
.nav-link.active::after{transform:scaleX(1)}
.header-actions{
  display:flex;
  align-items:center;
  gap:14px;
  flex:none;
  margin-left:auto;
}
.nav-search{
  display:flex;
  align-items:center;
  gap:8px;
  width:220px;
  height:38px;
  padding:0 14px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  transition:width .28s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.nav-search:focus-within{
  width:260px;
  border-color:var(--c-primary);
  box-shadow:0 0 0 3px rgba(22,51,43,.08);
}
.nav-search svg{width:16px;height:16px;color:var(--text-3);flex:none}
.search-input{
  border:0;background:transparent;outline:none;
  font-size:14px;color:var(--text);width:100%;
}
.search-input::placeholder{color:var(--text-3)}
.search-toggle{
  display:none;
  width:40px;height:40px;
  align-items:center;justify-content:center;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  color:var(--c-primary);
  background:var(--c-surface);
  transition:border-color .24s var(--ease),background .24s var(--ease);
}
.search-toggle:hover{border-color:var(--c-primary)}
.search-toggle svg{width:17px;height:17px}
.link-login{
  font-size:14px;font-weight:500;color:var(--text-2);
  padding:8px 4px;
  transition:color .24s var(--ease);
  white-space:nowrap;
}
.link-login:hover{color:var(--c-primary)}
.nav-toggle{
  display:none;
  width:44px;height:44px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:var(--c-surface);
  flex-direction:column;
  align-items:center;justify-content:center;gap:4px;
}
.nav-toggle span{display:block;width:18px;height:1.8px;background:var(--c-primary);border-radius:2px;transition:transform .24s var(--ease),opacity .24s var(--ease)}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5.8px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5.8px) rotate(-45deg)}
/* ============ buttons ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:13px 28px;
  border-radius:var(--r-pill);
  font-size:15px;
  font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:transform .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.btn-primary{background:var(--c-accent);color:#FFFFFF;border-color:var(--c-accent)}
.btn-primary:hover{background:var(--c-primary-ink);border-color:var(--c-primary-ink);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary);color:#F2EFE8;transform:translateY(-2px)}
.btn-light{background:#F2EFE8;color:var(--c-primary-ink);border-color:#F2EFE8}
.btn-light:hover{background:var(--c-accent);border-color:var(--c-accent);color:#fff;transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#F2EFE8;border-color:rgba(242,239,232,.5)}
.btn-outline-light:hover{background:rgba(242,239,232,.12);border-color:#F2EFE8;transform:translateY(-2px)}
.btn-sm{min-height:38px;padding:9px 20px;font-size:14px}
.text-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:15px;
  font-weight:600;
  color:var(--c-primary);
  position:relative;
  padding-bottom:3px;
}
.text-link::after{
  content:"";
  position:absolute;left:0;right:0;bottom:0;
  height:1.5px;background:var(--c-accent);
  transform:scaleX(0);transform-origin:left;
  transition:transform .28s var(--ease);
}
.text-link:hover::after{transform:scaleX(1)}
.text-link span{transition:transform .24s var(--ease)}
.text-link:hover span{transform:translateX(3px)}
/* ============ drawer ============ */
.nav-drawer{
  position:fixed;
  inset:0;
  z-index:110;
  background:var(--c-bg);
  padding:24px 20px 32px;
  display:flex;
  flex-direction:column;
  gap:24px;
  transform:translateY(-102%);
  opacity:0;
  visibility:hidden;
  transition:transform .34s var(--ease),opacity .28s var(--ease),visibility .28s var(--ease);
  overflow-y:auto;
}
.nav-drawer.is-open{transform:translateY(0);opacity:1;visibility:visible}
.drawer-top{display:flex;align-items:center;justify-content:space-between;gap:16px}
.drawer-close{
  width:44px;height:44px;border-radius:var(--r-pill);
  border:1px solid var(--c-line);background:var(--c-surface);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:22px;line-height:1;color:var(--c-primary);
}
.drawer-links{display:flex;flex-direction:column;border-top:1px solid var(--c-line)}
.drawer-links a{
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  color:var(--c-primary);
  padding:18px 2px;
  border-bottom:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-links a::after{content:"→";font-family:var(--font-sans);font-size:16px;color:var(--c-mist)}
.drawer-links a.active{color:var(--c-accent)}
.drawer-links a.active::after{color:var(--c-accent)}
.drawer-foot{margin-top:auto;display:flex;flex-direction:column;gap:12px}
.drawer-search{
  display:flex;align-items:center;
  height:48px;padding:0 16px;
  border:1px solid var(--c-line);
  border-radius:var(--r-input);
  background:var(--c-surface);
}
.drawer-search input{width:100%;border:0;background:transparent;outline:none;font-size:15px;color:var(--text)}
.drawer-search input::placeholder{color:var(--text-3)}
/* ============ page head ============ */
.page-head{
  position:relative;
  overflow:hidden;
  background:var(--c-primary);
  color:#F2EFE8;
  padding:96px 0 80px;
}
.page-head::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(242,239,232,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(242,239,232,.045) 1px,transparent 1px);
  background-size:52px 52px;
}
.page-head .container{position:relative;z-index:1}
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.18em;
  font-weight:500;
  color:var(--c-accent);
  text-transform:uppercase;
  margin-bottom:16px;
}
.page-head .eyebrow{color:#E9A183}
.page-head h1{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(2.5rem,5.2vw,4.2rem);
  line-height:1.06;
  letter-spacing:-.02em;
  color:#FFFFFF;
  max-width:14em;
}
.page-lead{
  margin-top:24px;
  max-width:46em;
  font-size:17px;
  line-height:1.85;
  color:rgba(242,239,232,.8);
}
.page-lead + .page-lead{margin-top:14px}
.anchor-pills{display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.anchor-pill{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 22px;
  border-radius:var(--r-pill);
  border:1px solid rgba(242,239,232,.28);
  color:#F2EFE8;
  font-size:14px;
  font-weight:500;
  transition:background .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease);
}
.anchor-pill:hover{background:var(--c-accent);border-color:var(--c-accent);transform:translateY(-2px)}
/* ============ section head ============ */
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:48px;
  padding-bottom:20px;
  border-bottom:1px solid var(--c-line);
}
.section-title{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(1.75rem,3vw,2.5rem);
  line-height:1.2;
  letter-spacing:-.01em;
  color:var(--c-primary);
}
.section-desc{
  margin-top:12px;
  font-size:15px;
  color:var(--text-2);
  max-width:38em;
  line-height:1.8;
}
.section-aside{font-size:14px;color:var(--text-3);white-space:nowrap}
@media (max-width:767px){
  .section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px}
  .section-aside{white-space:normal}
}
/* ============ service rows ============ */
.service-rows{display:flex;flex-direction:column;gap:72px}
.service-row{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:center;
}
.service-row.reverse{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}
.service-row.reverse .service-media{order:-1}
.service-media{
  position:relative;
  border-radius:var(--r-card);
  overflow:hidden;
  border:1px solid var(--c-line);
  background:var(--c-surface);
  box-shadow:var(--shadow-1);
}
.service-media img{
  width:100%;
  aspect-ratio:3/2;
  object-fit:cover;
  border-radius:0;
  transition:transform .5s var(--ease);
}
.service-media:hover img{transform:scale(1.04)}
.service-body h3{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:1.6rem;
  line-height:1.3;
  color:var(--c-primary);
  margin-bottom:14px;
}
.service-lead{font-size:16px;color:var(--text-2);line-height:1.85;margin-bottom:20px}
.check-list{display:flex;flex-direction:column;gap:12px;margin-bottom:24px}
.check-list li{
  position:relative;
  padding-left:28px;
  font-size:15.5px;
  line-height:1.8;
  color:var(--text);
}
.check-list li::before{
  content:"";
  position:absolute;
  left:0;top:.62em;
  width:14px;height:8px;
  border-left:2px solid var(--c-accent);
  border-bottom:2px solid var(--c-accent);
  transform:rotate(-45deg);
}
.check-list li.muted{color:var(--text-3)}
.check-list li.muted::before{border-color:var(--c-line)}
@media (max-width:991px){
  .service-rows{gap:48px}
  .service-row,.service-row.reverse{grid-template-columns:1fr;gap:24px}
  .service-row .service-media,.service-row.reverse .service-media{order:2}
  .service-row .service-body,.service-row.reverse .service-body{order:1}
}
/* ============ compare ============ */
#plans{background:var(--c-paper-soft);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.compare-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;align-items:stretch}
.plan-card{
  position:relative;
  display:flex;
  flex-direction:column;
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--shadow-1);
  transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s var(--ease);
}
.plan-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:var(--c-mist)}
.plan-card.featured{border-color:var(--c-primary);box-shadow:var(--shadow-2)}
.plan-badge{
  position:absolute;
  top:-13px;left:28px;
  font-size:12px;
  letter-spacing:.06em;
  padding:4px 12px;
  border-radius:var(--r-tag);
  border:1px solid var(--c-accent);
  color:var(--c-accent);
  background:var(--c-surface);
  font-weight:600;
}
.plan-name{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:1.35rem;
  color:var(--c-primary);
  line-height:1.3;
  margin-bottom:8px;
}
.plan-fit{font-size:14.5px;color:var(--text-2);line-height:1.75;margin-bottom:20px;min-height:3.4em}
.plan-divider{height:1px;background:var(--c-line);margin:0 0 18px}
.plan-list{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.plan-list li{
  position:relative;
  padding-left:24px;
  font-size:14.5px;
  color:var(--text);
  line-height:1.7;
}
.plan-list li::before{
  content:"";
  position:absolute;left:0;top:.6em;
  width:12px;height:7px;
  border-left:2px solid var(--ok);
  border-bottom:2px solid var(--ok);
  transform:rotate(-45deg);
}
.plan-list li.muted{color:var(--text-3)}
.plan-list li.muted::before{border-color:var(--c-line)}
.plan-meta{
  margin-top:auto;
  padding-top:18px;
  border-top:1px solid var(--c-line);
  font-size:13px;
  color:var(--text-3);
  letter-spacing:.02em;
  display:flex;
  align-items:center;
  gap:8px;
}
.plan-meta strong{color:var(--c-primary);font-weight:600}
@media (max-width:991px){
  .compare-grid{grid-template-columns:1fr;gap:20px}
}
/* ============ prepare ============ */
.prepare-grid{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,5fr);
  gap:56px;
  align-items:start;
}
.prepare-copy p{font-size:16px;color:var(--text-2);line-height:1.9;margin-top:18px;max-width:34em}
.prepare-card{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:28px;
  box-shadow:var(--shadow-1);
}
.prepare-card h3{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:1.15rem;
  color:var(--c-primary);
  margin-bottom:16px;
  line-height:1.4;
}
.prepare-list{display:flex;flex-direction:column}
.prepare-list li{
  display:flex;
  gap:14px;
  padding:14px 0;
  border-top:1px solid var(--c-line);
  font-size:15px;
  color:var(--text);
  line-height:1.7;
}
.prepare-list li:first-child{border-top:0;padding-top:0}
.prepare-list .idx{
  font-family:var(--font-serif);
  font-weight:900;
  font-size:15px;
  color:var(--c-accent);
  flex:none;
  width:1.6em;
  font-variant-numeric:tabular-nums;
}
@media (max-width:991px){
  .prepare-grid{grid-template-columns:1fr;gap:32px}
}
/* ============ faq ============ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  text-align:left;
  padding:24px 4px;
  font-size:17px;
  font-weight:600;
  color:var(--c-primary);
  line-height:1.6;
  transition:color .24s var(--ease);
}
.faq-q:hover{color:var(--c-accent)}
.faq-icon{
  flex:none;
  width:22px;height:22px;
  position:relative;
  transition:transform .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-accent);
  border-radius:2px;
}
.faq-icon::before{left:0;right:0;top:10px;height:2px}
.faq-icon::after{top:0;bottom:0;left:10px;width:2px}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-a p{
  padding:0 4px 26px;
  max-width:56em;
  font-size:15px;
  line-height:1.85;
  color:var(--text-2);
}
/* ============ cta ============ */
.cta-band{
  position:relative;
  overflow:hidden;
  background:var(--c-primary-ink);
  color:#F2EFE8;
  border-radius:18px;
  padding:64px;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  gap:40px;
  align-items:center;
}
.cta-band::after{
  content:"";
  position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(242,239,232,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(242,239,232,.04) 1px,transparent 1px);
  background-size:44px 44px;
}
.cta-band h2{
  position:relative;
  z-index:1;
  font-family:var(--font-serif);
  font-weight:900;
  font-size:clamp(1.625rem,2.6vw,2.25rem);
  line-height:1.22;
  letter-spacing:-.01em;
  color:#FFFFFF;
}
.cta-band p{
  position:relative;
  z-index:1;
  margin-top:14px;
  font-size:15.5px;
  line-height:1.85;
  color:rgba(242,239,232,.78);
  max-width:36em;
}
.cta-actions{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}
@media (max-width:991px){
  .cta-band{grid-template-columns:1fr;padding:44px 28px;gap:28px}
}
/* ============ footer ============ */
.site-footer{
  background:var(--c-primary-ink);
  color:#F2EFE8;
  padding:72px 0 28px;
  margin-top:96px;
}
.footer-top{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;
  padding-top:32px;
  border-top:1px solid rgba(157,181,170,.3);
}
.footer-brand .brand-text{color:#F2EFE8}
.footer-brand .brand-pre{color:var(--c-mist)}
.footer-brand p{
  margin-top:16px;
  font-size:14px;
  line-height:1.85;
  color:rgba(242,239,232,.68);
  max-width:26em;
}
.footer-col h3{
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--c-mist);
  margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col a{
  font-size:14px;
  color:rgba(242,239,232,.82);
  transition:color .24s var(--ease),transform .24s var(--ease);
  display:inline-block;
}
.footer-col a:hover{color:var(--c-accent);transform:translateX(2px)}
.footer-note{
  font-size:13.5px;
  line-height:1.85;
  color:rgba(242,239,232,.62);
}
.footer-bottom{
  margin-top:48px;
  padding-top:20px;
  border-top:1px solid rgba(157,181,170,.22);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:13px;
  color:rgba(242,239,232,.55);
  letter-spacing:.02em;
}
.dot-sep{color:rgba(157,181,170,.6)}
@media (max-width:991px){
  .footer-top{grid-template-columns:1fr 1fr;gap:32px}
  .site-footer{margin-top:64px;padding:48px 0 24px}
}
@media (max-width:520px){
  .footer-top{grid-template-columns:1fr}
  .footer-bottom{font-size:12px}
}
/* ============ responsive nav ============ */
@media (max-width:1199px){
  .nav-search{display:none}
  .search-toggle{display:inline-flex}
  .site-header.search-open .nav-search{
    display:flex;
    position:absolute;
    left:20px;right:20px;top:calc(100% + 10px);
    width:auto;
    height:46px;
    box-shadow:var(--shadow-2);
    background:var(--c-surface);
  }
  .site-header.search-open .nav-search:focus-within{width:auto}
}
@media (max-width:991px){
  .main-nav{display:none}
  .nav-toggle{display:flex}
  .link-login{display:none}
  .header-inner{gap:16px}
}
@media (max-width:520px){
  .brand-text{font-size:17px}
  .header-actions .btn-sm{padding:8px 16px;font-size:13px;min-height:38px}
  .nav-toggle{width:40px;height:40px}
}
/* ============ motion ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-visible{opacity:1;transform:translateY(0)}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category2 */
/* ============ tokens ============ */
:root{
  --c-primary:#16332B;
  --c-primary-ink:#0E211C;
  --c-accent:#D9683A;
  --c-mist:#9DB5AA;
  --c-bg:#F5F2EC;
  --c-surface:#FFFFFF;
  --c-line:#DED8CE;
  --c-ink:#1A1D1B;
  --c-ink-2:#5B625E;
  --c-ink-3:#8A908C;
  --c-ok:#2F7A5A;
  --c-warn:#B4761F;
  --c-err:#B23B3B;
  --inv-text:#F2EFE8;
  --r-card:14px;
  --r-img:10px;
  --r-tag:6px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,27,.06);
  --shadow-2:0 24px 60px -32px rgba(20,24,27,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:260ms var(--ease);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --num:"Inter","Helvetica Neue",Arial,sans-serif;
  --container:1240px;
  --pad-y:96px;
}
@media (max-width:1199px){ :root{ --pad-y:72px; } }
@media (max-width:991px){ :root{ --pad-y:56px; } }
@media (max-width:767px){ :root{ --pad-y:44px; } }

/* ============ reset / base ============ */
*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--sans);
  font-size:16.5px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{ display:block; max-width:100%; height:auto; }
a{ color:inherit; text-decoration:none; }
button{ font:inherit; color:inherit; }
input,textarea,select{ font:inherit; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-weight:700; }
p{ margin:0; }
:focus-visible{ outline:2px solid var(--c-accent); outline-offset:3px; border-radius:4px; }
::selection{ background:rgba(217,104,58,.22); }

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:768px){ .container{ padding:0 20px; } }

.section{ padding:var(--pad-y) 0; }
.section--tight{ padding-top:calc(var(--pad-y) * .62); }

.eyebrow{
  display:inline-block;
  font-size:12.5px;
  letter-spacing:.18em;
  color:var(--c-ink-3);
  text-transform:uppercase;
  margin-bottom:14px;
}
.h-serif{ font-family:var(--serif); font-weight:900; letter-spacing:-.02em; }
.num{ font-family:var(--num); font-weight:700; font-variant-numeric:tabular-nums; }

/* ============ buttons ============ */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  min-height:48px; padding:13px 28px;
  border-radius:var(--r-pill);
  font-size:15px; font-weight:600;
  border:1px solid transparent;
  cursor:pointer;
  transition:background var(--t), color var(--t), border-color var(--t), transform var(--t), box-shadow var(--t);
}
.btn-primary{ background:var(--c-accent); color:#fff; }
.btn-primary:hover{ background:var(--c-primary-ink); transform:translateY(-2px); box-shadow:var(--shadow-2); }
.btn-secondary{ background:transparent; border-color:var(--c-primary); color:var(--c-primary); }
.btn-secondary:hover{ background:var(--c-primary); color:var(--inv-text); transform:translateY(-2px); }
.btn-light{ background:var(--inv-text); color:var(--c-primary-ink); }
.btn-light:hover{ background:var(--c-accent); color:#fff; transform:translateY(-2px); }
.btn:disabled{ opacity:.45; cursor:not-allowed; transform:none; }
.btn-text{
  display:inline-flex; align-items:center; gap:6px;
  font-size:15px; font-weight:600; color:var(--c-primary);
  position:relative; padding-bottom:2px;
}
.btn-text::after{
  content:""; position:absolute; left:0; bottom:0; height:1px; width:100%;
  background:var(--c-accent); transform:scaleX(0); transform-origin:left;
  transition:transform var(--t);
}
.btn-text:hover::after{ transform:scaleX(1); }
.btn-text .arrow{ transition:transform var(--t); }
.btn-text:hover .arrow{ transform:translateX(3px); }

/* ============ header ============ */
.site-header{
  position:sticky; top:0; z-index:80;
  background:rgba(245,242,236,.92);
  border-bottom:1px solid transparent;
  transition:background var(--t), border-color var(--t), box-shadow var(--t);
  backdrop-filter:blur(10px);
}
.site-header.is-scrolled{
  background:rgba(245,242,236,.96);
  border-bottom:1px solid var(--c-line);
  box-shadow:0 6px 24px -22px rgba(20,24,27,.6);
}
.header-inner{
  display:flex; align-items:center; gap:28px;
  height:72px;
  transition:height var(--t);
}
.site-header.is-scrolled .header-inner{ height:64px; }
.logo{ display:inline-flex; align-items:center; gap:10px; flex:none; }
.logo-mark{ width:30px; height:30px; flex:none; }
.brand-text{
  font-family:var(--sans); font-weight:700; font-size:18px; letter-spacing:.04em;
  color:var(--c-primary);
}
.brand-pre{ font-size:10px; font-weight:600; letter-spacing:.08em; color:var(--c-ink-3); margin-right:3px; }
.brand-dot{ width:8px; height:8px; border-radius:50%; background:var(--c-mist); flex:none; }

.main-nav{ display:flex; align-items:center; gap:28px; margin-left:8px; }
.nav-link{
  position:relative; font-size:14px; font-weight:500; color:var(--c-ink-2);
  padding:6px 0; transition:color var(--t);
  white-space:nowrap;
}
.nav-link::after{
  content:""; position:absolute; left:0; right:0; bottom:-6px; height:2px;
  background:var(--c-primary); transform:scaleX(0); transform-origin:left;
  transition:transform var(--t);
}
.nav-link:hover{ color:var(--c-primary); }
.nav-link:hover::after{ transform:scaleX(.6); }
.nav-link.active{ color:var(--c-primary); font-weight:600; }
.nav-link.active::after{ transform:scaleX(1); }

.header-tools{ display:flex; align-items:center; gap:12px; margin-left:auto; }
.nav-search{
  display:flex; align-items:center; gap:8px;
  width:220px; height:40px; padding:0 14px;
  background:var(--c-surface); border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  transition:width var(--t), border-color var(--t), box-shadow var(--t);
}
.nav-search:focus-within{ width:260px; border-color:var(--c-primary); box-shadow:0 0 0 3px rgba(22,51,43,.08); }
.nav-search svg{ flex:none; color:var(--c-ink-3); }
.nav-search input{
  border:0; background:transparent; outline:none; width:100%;
  font-size:14px; color:var(--c-ink);
}
.nav-search input::placeholder{ color:var(--c-ink-3); }
.btn-login{
  font-size:14px; font-weight:500; color:var(--c-ink-2);
  padding:8px 6px; background:none; border:0; cursor:pointer;
  transition:color var(--t);
}
.btn-login:hover{ color:var(--c-primary); }
.btn-nav{
  display:inline-flex; align-items:center; height:40px; padding:0 20px;
  background:var(--c-primary); color:var(--inv-text);
  border-radius:var(--r-pill); font-size:14px; font-weight:600;
  transition:background var(--t), transform var(--t);
}
.btn-nav:hover{ background:var(--c-accent); transform:translateY(-2px); }
.nav-toggle{
  display:none; width:44px; height:44px; align-items:center; justify-content:center;
  background:transparent; border:1px solid var(--c-line); border-radius:10px; cursor:pointer;
}
.nav-toggle span{ display:block; width:18px; height:2px; background:var(--c-primary); position:relative; }
.nav-toggle span::before,.nav-toggle span::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background:var(--c-primary);
  transition:transform var(--t);
}
.nav-toggle span::before{ top:-6px; }
.nav-toggle span::after{ top:6px; }

.mobile-drawer{
  display:none;
  border-top:1px solid var(--c-line);
  background:var(--c-bg);
  padding:16px 0 24px;
}
.mobile-drawer.is-open{ display:block; }
.mobile-drawer .container{ display:flex; flex-direction:column; gap:4px; }
.mobile-drawer .drawer-link{
  font-size:20px; font-weight:600; color:var(--c-ink); padding:14px 0;
  border-bottom:1px solid var(--c-line);
}
.mobile-drawer .drawer-link.active{ color:var(--c-primary); }
.drawer-actions{ display:flex; gap:12px; margin-top:18px; }
.drawer-actions .btn{ flex:1; }

@media (max-width:1199px){
  .nav-search{ display:none; }
}
@media (max-width:991px){
  .main-nav{ display:none; }
  .btn-login{ display:none; }
  .nav-toggle{ display:inline-flex; }
  .btn-nav{ display:none; }
}

/* ============ page head ============ */
.page-head{ padding:calc(var(--pad-y) * .78) 0 0; }
.crumbs{
  font-size:13px; color:var(--c-ink-3); margin-bottom:26px;
  display:flex; align-items:center; gap:8px; flex-wrap:wrap;
}
.crumbs a{ transition:color var(--t); }
.crumbs a:hover{ color:var(--c-primary); text-decoration:underline; text-underline-offset:3px; }
.crumbs .sep{ color:var(--c-mist); }

.page-head h1{
  font-family:var(--serif); font-weight:900;
  font-size:clamp(2.1rem,4.2vw,3.4rem);
  line-height:1.12; letter-spacing:-.02em;
  max-width:22ch;
  margin-bottom:20px;
}
.page-head .lead{
  font-size:17px; line-height:1.85; color:var(--c-ink-2);
  max-width:62ch;
}
.anchor-pills{
  display:flex; gap:10px; flex-wrap:wrap; margin-top:30px;
}
.pill{
  display:inline-flex; align-items:center; gap:8px;
  padding:9px 18px; border-radius:var(--r-pill);
  font-size:13.5px; font-weight:500; color:var(--c-ink-2);
  background:var(--c-surface); border:1px solid var(--c-line);
  transition:color var(--t), border-color var(--t), background var(--t), transform var(--t);
}
.pill:hover{ color:var(--c-primary); border-color:var(--c-primary); transform:translateY(-2px); }
.pill.is-current{ background:var(--c-primary); border-color:var(--c-primary); color:var(--inv-text); }

.banner{
  margin-top:clamp(32px,5vw,56px);
  border-radius:var(--r-card); overflow:hidden;
  aspect-ratio:21/9;
  background:var(--c-line);
  box-shadow:var(--shadow-1);
}
.banner img{ width:100%; height:100%; object-fit:cover; }
@media (max-width:767px){
  .banner{ aspect-ratio:16/10; }
}

/* ============ section head ============ */
.section-head{
  display:flex; align-items:flex-end; justify-content:space-between; gap:24px;
  margin-bottom:clamp(28px,4vw,48px);
}
.section-head h2{
  font-family:var(--serif); font-weight:900;
  font-size:clamp(1.6rem,3vw,2.3rem);
  line-height:1.2; letter-spacing:-.01em;
  max-width:24ch;
}
.section-head p{
  font-size:15px; color:var(--c-ink-2); max-width:46ch; margin-top:12px;
}
.section-head .sh-side{ flex:none; }
@media (max-width:767px){
  .section-head{ flex-direction:column; align-items:flex-start; gap:16px; }
}

/* ============ scene rows ============ */
.scene-list{ display:flex; flex-direction:column; gap:clamp(40px,6vw,76px); }
.scene-row{
  display:grid; grid-template-columns:1fr 1fr; gap:clamp(24px,4vw,56px);
  align-items:center;
}
.scene-row:nth-child(even) .scene-media{ order:2; }
.scene-media{
  border-radius:var(--r-card); overflow:hidden; aspect-ratio:3/2;
  background:var(--c-line); box-shadow:var(--shadow-1);
}
.scene-media img{ width:100%; height:100%; object-fit:cover; transition:transform 420ms var(--ease); }
.scene-media:hover img{ transform:scale(1.04); }
.scene-tag{
  display:inline-block; padding:5px 12px; border-radius:var(--r-tag);
  background:rgba(157,181,170,.24); color:var(--c-primary);
  font-size:13px; font-weight:600; letter-spacing:.02em; margin-bottom:16px;
}
.scene-copy h3{
  font-family:var(--serif); font-weight:900;
  font-size:clamp(1.35rem,2.2vw,1.75rem); line-height:1.25;
  margin-bottom:14px;
}
.scene-copy p{ font-size:16px; line-height:1.85; color:var(--c-ink-2); }
.points{ margin-top:22px; display:flex; flex-direction:column; gap:10px; }
.points li{
  position:relative; padding-left:22px; font-size:15px; line-height:1.7; color:var(--c-ink);
}
.points li::before{
  content:""; position:absolute; left:0; top:9px;
  width:8px; height:8px; border-radius:50%;
  border:2px solid var(--c-accent); background:transparent;
}
.scene-copy .btn-text{ margin-top:22px; }
@media (max-width:880px){
  .scene-row{ grid-template-columns:1fr; }
  .scene-row:nth-child(even) .scene-media{ order:0; }
  .scene-media{ aspect-ratio:16/9; }
}

/* ============ timeline ============ */
.timeline-wrap{
  background:var(--c-surface);
  border:1px solid var(--c-line);
  border-radius:var(--r-card);
  padding:clamp(28px,4vw,56px);
  box-shadow:var(--shadow-1);
}
.timeline{ display:flex; flex-direction:column; }
.step{
  display:grid; grid-template-columns:88px 1fr; gap:24px;
  padding:26px 0;
  border-top:1px solid var(--c-line);
  position:relative;
}
.step:first-child{ border-top:0; padding-top:6px; }
.step:last-child{ padding-bottom:6px; }
.step-no{
  font-family:var(--serif); font-weight:900; font-size:32px;
  color:var(--c-mist); line-height:1.1;
  font-variant-numeric:tabular-nums;
  display:flex; align-items:flex-start; gap:12px;
}
.step:first-child .step-no{ color:var(--c-accent); }
.step-no::after{
  content:""; flex:1; height:1px; background:var(--c-line); margin-top:16px;
}
.step-body h3{ font-size:19px; font-weight:700; margin-bottom:8px; }
.step-body p{ font-size:15.5px; color:var(--c-ink-2); max-width:66ch; }
.step-meta{
  margin-top:12px; font-size:13px; color:var(--c-ink-3); letter-spacing:.02em;
}
@media (max-width:640px){
  .step{ grid-template-columns:1fr; gap:10px; }
  .step-no{ font-size:26px; }
  .step-no::after{ display:none; }
}

/* ============ duo summary ============ */
.duo-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
.duo-card{
  background:var(--c-surface); border:1px solid var(--c-line);
  border-radius:var(--r-card); padding:clamp(24px,3vw,36px);
  box-shadow:var(--shadow-1);
  display:flex; flex-direction:column;
  transition:transform var(--t), box-shadow var(--t), border-color var(--t);
}
.duo-card:hover{ transform:translateY(-4px); box-shadow:var(--shadow-2); border-color:var(--c-mist); }
.duo-card h3{
  font-family:var(--serif); font-weight:900; font-size:1.3rem; margin-bottom:10px;
}
.duo-card > p{ font-size:15.5px; color:var(--c-ink-2); }
.duo-card .points{ margin-top:20px; }
.duo-card .btn-text{ margin-top:auto; padding-top:24px; align-self:flex-start; }
.duo-badge{
  display:inline-flex; align-self:flex-start; margin-bottom:16px;
  padding:4px 12px; border-radius:var(--r-pill);
  border:1px solid var(--c-accent); color:var(--c-accent);
  font-size:12.5px; font-weight:600; letter-spacing:.04em;
}
@media (max-width:820px){ .duo-grid{ grid-template-columns:1fr; } }

/* ============ checklist ============ */
.check-block{
  background:var(--c-primary); color:var(--inv-text);
  border-radius:var(--r-card);
  padding:clamp(30px,4vw,56px);
  display:grid; grid-template-columns:1fr 1.35fr; gap:clamp(24px,4vw,56px);
  align-items:start;
}
.check-block h2{
  font-family:var(--serif); font-weight:900;
  font-size:clamp(1.5rem,2.6vw,2rem); line-height:1.25; margin-bottom:14px;
}
.check-block .cb-lead{ font-size:15px; color:rgba(242,239,232,.78); line-height:1.85; }
.check-list{ display:grid; grid-template-columns:1fr 1fr; gap:14px 28px; }
.check-list li{
  display:flex; gap:12px; align-items:flex-start;
  font-size:15px; line-height:1.7; color:rgba(242,239,232,.92);
  padding-bottom:14px; border-bottom:1px solid rgba(157,181,170,.28);
}
.check-list li .ck{
  flex:none; width:20px; height:20px; border-radius:50%;
  border:1px solid var(--c-mist); display:inline-flex; align-items:center; justify-content:center;
  margin-top:2px;
}
.check-list li .ck svg{ color:var(--c-accent); }
@media (max-width:880px){
  .check-block{ grid-template-columns:1fr; }
  .check-list{ grid-template-columns:1fr; }
}

/* ============ faq ============ */
.faq{ max-width:880px; }
.faq-item{ border-top:1px solid var(--c-line); }
.faq-item:last-child{ border-bottom:1px solid var(--c-line); }
.faq-q{
  width:100%; display:flex; align-items:center; justify-content:space-between; gap:20px;
  background:none; border:0; cursor:pointer; text-align:left;
  padding:24px 0; font-size:17px; font-weight:600; color:var(--c-ink);
  transition:color var(--t);
}
.faq-q:hover{ color:var(--c-primary); }
.faq-icon{
  flex:none; width:26px; height:26px; position:relative;
  border:1px solid var(--c-line); border-radius:50%;
  transition:transform var(--t), border-color var(--t);
}
.faq-icon::before,.faq-icon::after{
  content:""; position:absolute; background:var(--c-primary);
  left:50%; top:50%; transform:translate(-50%,-50%);
}
.faq-icon::before{ width:11px; height:1.5px; }
.faq-icon::after{ width:1.5px; height:11px; transition:opacity var(--t); }
.faq-item.is-open .faq-icon{ transform:rotate(45deg); border-color:var(--c-accent); }
.faq-item.is-open .faq-icon::before,.faq-item.is-open .faq-icon::after{ background:var(--c-accent); }
.faq-a{
  max-height:0; overflow:hidden;
  transition:max-height 260ms var(--ease);
}
.faq-a p{
  padding:0 0 26px; font-size:15px; line-height:1.9; color:var(--c-ink-2);
  max-width:56ch;
}

/* ============ CTA ============ */
.cta-block{
  background:var(--c-primary-ink); color:var(--inv-text);
  border-radius:var(--r-card);
  padding:clamp(32px,4.4vw,64px);
  display:grid; grid-template-columns:1fr 1fr; gap:clamp(28px,4vw,56px);
  position:relative; overflow:hidden;
}
.cta-block::before{
  content:""; position:absolute; inset:0;
  background-image:linear-gradient(rgba(242,239,232,.045) 1px, transparent 1px),
                   linear-gradient(90deg, rgba(242,239,232,.045) 1px, transparent 1px);
  background-size:48px 48px;
  pointer-events:none;
}
.cta-copy{ position:relative; }
.cta-copy h2{
  font-family:var(--serif); font-weight:900;
  font-size:clamp(1.6rem,2.8vw,2.15rem); line-height:1.25; margin-bottom:16px;
}
.cta-copy p{ font-size:15.5px; line-height:1.85; color:rgba(242,239,232,.8); max-width:42ch; }
.cta-contacts{ margin-top:26px; display:flex; flex-direction:column; gap:10px; font-size:14px; color:rgba(242,239,232,.72); }
.cta-contacts .dot{ color:var(--c-accent); }

.cta-form{ position:relative; display:grid; grid-template-columns:1fr 1fr; gap:16px; align-content:start; }
.field{ display:flex; flex-direction:column; gap:8px; }
.field.full{ grid-column:1 / -1; }
.field label{ font-size:13px; font-weight:500; color:rgba(242,239,232,.78); letter-spacing:.02em; }
.field input,.field textarea,.field select{
  width:100%; height:48px; padding:0 14px;
  background:rgba(245,242,236,.96);
  border:1px solid transparent; border-radius:10px;
  color:var(--c-ink); font-size:15px;
  transition:border-color var(--t), box-shadow var(--t);
}
.field textarea{ height:auto; min-height:96px; padding:12px 14px; line-height:1.7; resize:vertical; }
.field input:focus,.field textarea:focus,.field select:focus{
  outline:none; border-color:var(--c-accent); box-shadow:0 0 0 3px rgba(217,104,58,.24);
}
.field.has-error input,.field.has-error textarea{ border-left:3px solid var(--c-err); }
.field .err-text{ font-size:13px; color:#F0A08A; display:none; }
.field.has-error .err-text{ display:block; }
.cta-form .btn{ grid-column:1 / -1; justify-self:start; }
.form-note{ grid-column:1 / -1; font-size:13px; color:rgba(242,239,232,.62); line-height:1.7; }
.form-note.ok{ color:#9FD9BC; }
@media (max-width:900px){
  .cta-block{ grid-template-columns:1fr; }
}
@media (max-width:560px){
  .cta-form{ grid-template-columns:1fr; }
  .cta-form .btn{ width:100%; }
}

/* ============ footer ============ */
.site-footer{
  background:var(--c-primary-ink); color:var(--inv-text);
  margin-top:var(--pad-y);
  padding-top:clamp(40px,5vw,72px);
  border-top:1px solid rgba(157,181,170,.3);
}
.footer-top{
  display:grid; grid-template-columns:1.5fr 1fr 1fr 1.2fr; gap:clamp(24px,4vw,48px);
  padding-bottom:clamp(32px,4vw,56px);
}
.footer-brand .brand-text{ color:var(--inv-text); font-size:20px; }
.footer-brand p{
  margin-top:14px; font-size:14px; line-height:1.85;
  color:rgba(242,239,232,.68); max-width:34ch;
}
.footer-col h3{
  font-size:13px; font-weight:600; letter-spacing:.16em;
  color:rgba(242,239,232,.6); margin-bottom:16px; text-transform:uppercase;
}
.footer-col ul{ display:flex; flex-direction:column; gap:10px; }
.footer-col a{
  font-size:14px; color:rgba(242,239,232,.86);
  transition:color var(--t), transform var(--t);
  display:inline-block;
}
.footer-col a:hover{ color:var(--c-accent); transform:translateX(2px); }
.footer-note{ font-size:14px; line-height:1.8; color:rgba(242,239,232,.66); max-width:30ch; }
.footer-bottom{
  display:flex; align-items:center; gap:10px; flex-wrap:wrap;
  padding:22px 0 28px;
  border-top:1px solid rgba(157,181,170,.28);
  font-size:13px; color:rgba(242,239,232,.6); letter-spacing:.02em;
}
.footer-bottom .dot-sep{ color:rgba(157,181,170,.7); }
@media (max-width:900px){
  .footer-top{ grid-template-columns:1fr 1fr; }
}
@media (max-width:560px){
  .footer-top{ grid-template-columns:1fr; }
}

/* ============ reveal animation ============ */
.reveal{ opacity:0; transform:translateY(12px); transition:opacity 520ms var(--ease), transform 520ms var(--ease); }
.reveal.is-in{ opacity:1; transform:none; }
@media (prefers-reduced-motion:reduce){
  *{ animation:none !important; transition:none !important; }
  .reveal{ opacity:1; transform:none; }
  html{ scroll-behavior:auto; }
}

/* roulang page: category3 */
:root{
  --c-primary:#16332B;
  --c-primary-ink:#0E211C;
  --c-accent:#D9683A;
  --c-mist:#9DB5AA;
  --c-bg:#F5F2EC;
  --c-surface:#FFFFFF;
  --c-line:#DED8CE;
  --c-text:#1A1D1B;
  --c-text-2:#5B625E;
  --c-text-3:#8A908C;
  --c-ok:#2F7A5A;
  --c-warn:#B4761F;
  --c-err:#B23B3B;
  --c-invert:#F2EFE8;
  --r-card:14px;
  --r-img:10px;
  --r-input:10px;
  --r-tag:6px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,27,.06);
  --shadow-2:0 24px 60px -32px rgba(20,24,27,.30);
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:260ms;
  --container:1240px;
  --sec:96px;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-num:"Inter","Helvetica Neue",Arial,sans-serif;
}
*,*::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:16.5px;
  line-height:1.85;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
h1,h2,h3,h4{margin:0;font-family:var(--font-serif);font-weight:900;line-height:1.15;letter-spacing:-.01em;color:var(--c-primary)}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px;border-radius:4px}
::selection{background:rgba(217,104,58,.22)}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:var(--sec) 0}
.section--tight{padding:64px 0}
.eyebrow{
  font-family:var(--font-sans);
  font-size:12.5px;font-weight:700;letter-spacing:.18em;
  color:var(--c-accent);text-transform:uppercase;margin-bottom:16px;
}
.lead{font-size:17px;line-height:1.9;color:var(--c-text-2);max-width:68ch}
.dot-sep{color:var(--c-mist);padding:0 6px}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(245,242,236,.88);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 10px 30px -24px rgba(20,24,27,.55)}
.header-inner{position:relative;display:flex;align-items:center;gap:28px;height:72px;transition:height var(--dur) var(--ease)}
.site-header.is-scrolled .header-inner{height:64px}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand-mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto}
.brand-mark svg{width:30px;height:30px;display:block}
.brand-text{font-family:var(--font-sans);font-weight:700;font-size:18px;letter-spacing:.04em;color:var(--c-primary);white-space:nowrap}
.brand-pre{font-family:var(--font-num);font-size:11px;font-weight:700;letter-spacing:.06em;color:var(--c-mist);margin-right:3px;text-transform:lowercase}
.brand-dot{width:8px;height:8px;border-radius:50%;background:var(--c-mist);flex:0 0 auto;margin-left:2px}

.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{
  position:relative;font-size:14px;font-weight:500;color:var(--c-text-2);
  padding:6px 0;white-space:nowrap;transition:color var(--dur) var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--c-primary);transition:width 300ms var(--ease);
}
.nav-link:hover{color:var(--c-primary)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-link.active{color:var(--c-primary);font-weight:700}

.header-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.nav-search{
  display:flex;align-items:center;gap:8px;
  width:220px;height:40px;padding:0 14px;
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-pill);
  transition:width 300ms var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-search svg{width:16px;height:16px;flex:0 0 auto;color:var(--c-text-3)}
.nav-search input{
  width:100%;border:0;background:transparent;font-family:inherit;font-size:13.5px;color:var(--c-text);
  padding:0;line-height:1;
}
.nav-search input::placeholder{color:var(--c-text-3)}
.nav-search input:focus{outline:none}
.nav-search:focus-within{width:260px;border-color:var(--c-primary);box-shadow:0 0 0 3px rgba(22,51,43,.08)}

.search-toggle{
  display:none;width:40px;height:40px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-pill);background:var(--c-surface);color:var(--c-text-2);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.search-toggle svg{width:17px;height:17px}
.search-toggle:hover{color:var(--c-primary);border-color:var(--c-mist)}

.link-btn{font-size:14px;font-weight:500;color:var(--c-text-2);padding:8px 4px;transition:color var(--dur) var(--ease)}
.link-btn:hover{color:var(--c-primary)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-sans);font-size:14.5px;font-weight:700;
  padding:13px 26px;border-radius:var(--r-pill);border:1px solid transparent;
  cursor:pointer;text-align:center;line-height:1.2;min-height:44px;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease),
             box-shadow var(--dur) var(--ease);
}
.btn-sm{padding:10px 20px;font-size:13.5px;min-height:40px}
.btn-primary{background:var(--c-accent);color:#FFFFFF;box-shadow:0 10px 24px -18px rgba(217,104,58,.9)}
.btn-primary:hover{background:var(--c-primary-ink);transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-primary:active{transform:translateY(0)}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary);color:var(--c-invert);transform:translateY(-2px)}
.btn-ghost:active{transform:translateY(0)}
.btn-light{background:var(--c-invert);color:var(--c-primary)}
.btn-light:hover{background:#FFFFFF;transform:translateY(-2px);box-shadow:var(--shadow-2)}
.btn-outline-light{background:transparent;color:var(--c-invert);border-color:rgba(242,239,232,.55)}
.btn-outline-light:hover{background:rgba(242,239,232,.12);border-color:var(--c-invert);transform:translateY(-2px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--c-primary);
  padding:4px 0;position:relative;min-height:0;border-radius:4px;
}
.btn-text::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;background:var(--c-accent);
  transform:scaleX(0);transform-origin:left;transition:transform 300ms var(--ease);
}
.btn-text:hover::after{transform:scaleX(1)}
.btn-text .arrow{transition:transform var(--dur) var(--ease)}
.btn-text:hover .arrow{transform:translateX(2px)}

.nav-toggle{
  display:none;width:42px;height:42px;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-pill);background:var(--c-surface);color:var(--c-primary);
}
.nav-toggle span{display:block;width:17px;height:1.6px;background:currentColor;position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:17px;height:1.6px;background:currentColor;border-radius:2px;
  transition:transform var(--dur) var(--ease);
}
.nav-toggle span::before{top:-5.4px}
.nav-toggle span::after{top:5.4px}

.drawer-mask{
  position:fixed;inset:0;background:rgba(14,33,28,.42);opacity:0;visibility:hidden;
  transition:opacity var(--dur) var(--ease),visibility var(--dur) var(--ease);z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;width:min(88vw,360px);height:100vh;z-index:96;
  background:var(--c-bg);border-left:1px solid var(--c-line);
  transform:translateX(102%);transition:transform 320ms var(--ease);
  display:flex;flex-direction:column;padding:20px 22px 28px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.drawer-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer-close{
  width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--c-line);border-radius:var(--r-pill);color:var(--c-text-2);background:var(--c-surface);
}
.drawer-close:hover{color:var(--c-primary);border-color:var(--c-mist)}
.drawer-nav{display:flex;flex-direction:column;gap:2px}
.drawer-nav a{
  font-size:20px;font-family:var(--font-serif);font-weight:900;color:var(--c-primary);
  padding:14px 0;border-bottom:1px solid var(--c-line);letter-spacing:-.01em;
}
.drawer-nav a.active{color:var(--c-accent)}
.drawer-actions{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.drawer-search{
  display:flex;align-items:center;gap:8px;height:46px;padding:0 14px;background:var(--c-surface);
  border:1px solid var(--c-line);border-radius:var(--r-input);margin-top:20px;
}
.drawer-search input{border:0;background:transparent;width:100%;font-family:inherit;font-size:14px}
.drawer-search input:focus{outline:none}
.drawer-search svg{width:16px;height:16px;color:var(--c-text-3)}

/* ============ 页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background:var(--c-primary);color:var(--c-invert);
  padding:72px 0 132px;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.16;filter:saturate(.7);
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(14,33,28,.30) 0%,rgba(14,33,28,.72) 100%);
}
.page-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:13px;color:rgba(242,239,232,.66);margin-bottom:26px}
.crumbs a{color:rgba(242,239,232,.82);border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.crumbs a:hover{color:#FFFFFF;border-bottom-color:var(--c-accent)}
.page-hero .eyebrow{color:var(--c-mist)}
.page-hero h1{
  color:#FFFFFF;
  font-size:clamp(2.5rem,5.2vw,4.2rem);
  line-height:1.06;letter-spacing:-.02em;max-width:18ch;
}
.page-hero .hero-lead{
  margin-top:22px;font-size:17px;line-height:1.9;color:rgba(242,239,232,.82);
  max-width:62ch;
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}
.hero-tags a{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 18px;border-radius:var(--r-pill);
  border:1px solid rgba(157,181,170,.42);
  font-size:13.5px;color:rgba(242,239,232,.9);
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
  min-height:40px;
}
.hero-tags a:hover{background:rgba(242,239,232,.12);border-color:var(--c-mist);transform:translateY(-2px)}

/* ============ 统计条 ============ */
.stats-section{padding:0 0 8px}
.stats{
  position:relative;z-index:3;margin-top:-72px;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--shadow-1);overflow:hidden;
}
.stat{padding:28px 26px;border-left:1px solid var(--c-line)}
.stat:first-child{border-left:0}
.stat-num{
  font-family:var(--font-serif);font-weight:900;font-size:clamp(1.75rem,2.6vw,2.25rem);
  color:var(--c-primary);line-height:1.1;font-variant-numeric:tabular-nums;
  display:flex;align-items:baseline;gap:4px;
}
.stat-num small{font-family:var(--font-sans);font-size:13px;font-weight:700;color:var(--c-text-3);letter-spacing:.02em}
.stat p{margin-top:8px;font-size:13px;line-height:1.7;color:var(--c-text-2);letter-spacing:.02em}

/* ============ 筛选 ============ */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:36px}
.filter-label{font-size:13px;color:var(--c-text-3);letter-spacing:.06em;margin-right:4px}
.chip{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 18px;border-radius:var(--r-pill);border:1px solid var(--c-line);
  background:var(--c-surface);font-size:13.5px;font-weight:500;color:var(--c-text-2);
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
  min-height:40px;
}
.chip:hover{border-color:var(--c-mist);color:var(--c-primary);transform:translateY(-2px)}
.chip.is-active{background:var(--c-primary);border-color:var(--c-primary);color:var(--c-invert);font-weight:700}
.chip.is-active:hover{background:var(--c-primary-ink);transform:translateY(-2px)}

/* ============ 案例卡阵 ============ */
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.section-head h2{font-size:clamp(1.75rem,3vw,2.5rem)}
.section-head .lead{margin-top:14px;font-size:15.5px;color:var(--c-text-2);max-width:56ch}

.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 24px;align-items:start}
.case-col{display:flex;flex-direction:column;gap:24px}

.case-card{
  background:var(--c-surface);border:1px solid var(--c-line);border-radius:var(--r-card);
  overflow:hidden;box-shadow:var(--shadow-1);display:flex;flex-direction:column;
  transition:transform 300ms var(--ease),box-shadow 300ms var(--ease),border-color 300ms var(--ease);
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-2);border-color:#CFC7BA}
.case-media{display:block;overflow:hidden;background:#EBE6DC}
.case-media img{
  width:100%;height:100%;object-fit:cover;
  aspect-ratio:3/2;
  transition:transform 420ms var(--ease);
}
.case-card--tall .case-media img{aspect-ratio:4/3}
.case-card:hover .case-media img{transform:scale(1.04)}
.case-body{padding:24px 26px 26px;display:flex;flex-direction:column;gap:12px}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  padding:4px 11px;border-radius:var(--r-tag);
  background:rgba(157,181,170,.20);color:var(--c-primary);
  font-size:12.5px;font-weight:700;letter-spacing:.02em;line-height:1.6;
}
.tag--accent{background:transparent;border:1px solid rgba(217,104,58,.55);color:var(--c-accent)}
.case-title{font-size:19px;line-height:1.45;letter-spacing:-.01em;color:var(--c-primary)}
.case-card--tall .case-title{font-size:22px;line-height:1.4}
.case-title a{transition:color var(--dur) var(--ease)}
.case-title a:hover{color:var(--c-accent)}
.case-desc{
  font-size:14.5px;line-height:1.8;color:var(--c-text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.case-card--tall .case-desc{-webkit-line-clamp:3}
.case-meta{
  margin-top:4px;padding-top:14px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:var(--c-text-3);letter-spacing:.02em;
}
.case-meta .btn-text{font-size:13.5px}

.load-more{display:flex;justify-content:center;margin-top:44px}
.load-note{margin-top:14px;text-align:center;font-size:13px;color:var(--c-text-3);letter-spacing:.02em}

/* ============ FAQ ============ */
.faq-wrap{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.faq-head h2{font-size:clamp(1.75rem,3vw,2.5rem);max-width:14ch}
.faq-head .lead{margin-top:16px;font-size:15.5px}
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{
  width:100%;display:flex;align-items:flex-start;justify-content:space-between;gap:20px;
  text-align:left;padding:24px 4px;font-size:17px;font-weight:700;line-height:1.6;color:var(--c-primary);
  font-family:var(--font-sans);transition:color var(--dur) var(--ease);
}
.faq-q:hover{color:var(--c-accent)}
.faq-icon{position:relative;flex:0 0 auto;width:18px;height:18px;margin-top:5px;transition:transform 260ms var(--ease)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-accent);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;transition:opacity 260ms var(--ease)}
.faq-item.is-open .faq-icon{transform:rotate(45deg)}
.faq-item.is-open .faq-icon::after{opacity:0}
.faq-a{max-height:0;overflow:hidden;transition:max-height 260ms var(--ease)}
.faq-item.is-open .faq-a{max-height:420px}
.faq-a p{
  padding:0 4px 26px;font-size:15px;line-height:1.85;color:var(--c-text-2);max-width:56ch;
}

/* ============ CTA ============ */
.cta-band{background:var(--c-primary-ink);color:var(--c-invert);position:relative;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;opacity:.05;
  background-image:linear-gradient(rgba(242,239,232,.7) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(242,239,232,.7) 1px,transparent 1px);
  background-size:48px 48px;
}
.cta-inner{
  position:relative;z-index:2;display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center;
  padding:80px 0;
}
.cta-band h2{color:#FFFFFF;font-size:clamp(1.75rem,3vw,2.5rem);max-width:16ch}
.cta-band .cta-desc{margin-top:18px;font-size:16px;line-height:1.85;color:rgba(242,239,232,.76);max-width:48ch}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-primary-ink);color:var(--c-invert);padding:72px 0 0;position:relative}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(157,181,170,.55),rgba(157,181,170,.08));
}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px}
.footer-brand .brand-text{color:#FFFFFF;font-size:19px}
.footer-brand .brand-pre{color:var(--c-mist)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(242,239,232,.66);max-width:34ch}
.footer-col h3{
  font-family:var(--font-sans);font-size:13px;font-weight:700;letter-spacing:.16em;
  color:var(--c-mist);margin-bottom:18px;
}
.footer-col ul{display:flex;flex-direction:column;gap:10px}
.footer-col li a{
  font-size:14px;color:rgba(242,239,232,.82);
  transition:color var(--dur) var(--ease),transform var(--dur) var(--ease);
  display:inline-block;
}
.footer-col li a:hover{color:var(--c-accent);transform:translateX(2px)}
.footer-note{font-size:13.5px;line-height:1.85;color:rgba(242,239,232,.62)}
.footer-bottom{
  border-top:1px solid rgba(157,181,170,.22);
  padding:22px 0 26px;display:flex;flex-wrap:wrap;align-items:center;gap:6px;
  font-size:13px;color:rgba(242,239,232,.58);letter-spacing:.02em;
}
.footer-bottom .dot-sep{color:rgba(157,181,170,.6)}

/* ============ 入场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease)}
.reveal.is-in{opacity:1;transform:none}
.case-col .case-card:nth-child(2){transition-delay:60ms}
.case-col .case-card:nth-child(3){transition-delay:120ms}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* ============ 响应式 ============ */
@media (max-width:1439px){
  :root{--container:1240px}
}
@media (max-width:1199px){
  :root{--sec:72px}
  .main-nav{gap:20px}
  .nav-link{font-size:13.5px}
  .nav-search{display:none}
  .search-toggle{display:inline-flex}
  .site-header.is-search-open .nav-search{
    display:flex;position:absolute;left:24px;right:24px;top:calc(100% + 10px);
    width:auto;height:52px;padding:0 18px;background:var(--c-surface);
    border:1px solid var(--c-line);border-radius:var(--r-input);
    box-shadow:var(--shadow-2);
  }
  .site-header.is-search-open .nav-search:focus-within{width:auto}
  .faq-wrap{grid-template-columns:1fr;gap:32px}
  .faq-head h2{max-width:none}
  .cta-inner{grid-template-columns:1fr;gap:32px;padding:64px 0}
  .cta-actions{justify-content:flex-start}
  .footer-top{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:991px){
  :root{--sec:56px}
  .main-nav{display:none}
  .nav-toggle{display:inline-flex}
  .header-actions{gap:10px}
  .link-btn{display:none}
  .stats{grid-template-columns:1fr 1fr}
  .stat:nth-child(3){border-left:0;border-top:1px solid var(--c-line)}
  .stat:nth-child(4){border-top:1px solid var(--c-line)}
  .page-hero{padding:56px 0 116px}
  .case-grid{gap:0 20px}
  .case-col{gap:20px}
  .case-body{padding:20px 20px 22px}
  .case-card--tall .case-title{font-size:20px}
  .case-title{font-size:18px}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.8}
  :root{--sec:44px}
  .container{padding:0 20px}
  .header-inner{height:64px;gap:14px}
  .site-header.is-scrolled .header-inner{height:60px}
  .brand-text{font-size:16.5px}
  .brand-mark svg{width:26px;height:26px}
  .header-actions .btn-sm{padding:9px 16px;font-size:13px}
  .page-hero{padding:44px 0 104px}
  .page-hero .hero-lead{font-size:15.5px}
  .hero-tags a{font-size:13px;padding:8px 14px}
  .stats{margin-top:-64px;grid-template-columns:1fr 1fr}
  .stat{padding:20px 18px}
  .stat p{font-size:12.5px}
  .case-grid{grid-template-columns:1fr;gap:20px}
  .case-col{gap:20px}
  .case-media img{aspect-ratio:3/2}
  .case-card--tall .case-media img{aspect-ratio:4/3}
  .section-head{margin-bottom:26px}
  .filter-bar{gap:8px;margin-bottom:26px}
  .filter-label{display:none}
  .chip{padding:8px 15px;font-size:13px}
  .faq-q{font-size:16px;padding:20px 0}
  .cta-inner{padding:52px 0}
  .cta-actions .btn{width:100%}
  .footer-top{grid-template-columns:1fr;gap:30px;padding-bottom:40px}
  .site-footer{padding-top:52px}
  .footer-bottom{font-size:12.5px}
}
@media (max-width:480px){
  .stats{grid-template-columns:1fr}
  .stat{border-left:0!important;border-top:1px solid var(--c-line)}
  .stat:first-child{border-top:0}
  .header-actions .link-btn{display:none}
  .case-meta{font-size:12.5px}
}

.reveal{opacity:1;transform:none}