/* roulang page: index */
:root{
  --ink:#0E3B3C;
  --ink-deep:#08292A;
  --accent:#FF6A3D;
  --bg:#F7F5F0;
  --bg-2:#ECE9E2;
  --paper:#FBF9F5;
  --text:#12161A;
  --text-2:#5A625F;
  --text-3:#8B918D;
  --line:rgba(14,59,60,.12);
  --line-soft:rgba(14,59,60,.08);
  --radius:8px;
  --radius-sm:6px;
  --pill:999px;
  --shadow:0 1px 2px rgba(14,59,60,.05);
  --shadow-h:0 14px 34px -18px rgba(14,59,60,.28);
  --ease:240ms cubic-bezier(.2,.7,.3,1);
  --container:1240px;
  --sec-y:110px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4,p,ul,ol,li,figure{margin:0;padding:0}
ul,ol{list-style:none}
input,textarea,select{font:inherit;color:inherit}
::selection{background:rgba(255,106,61,.22)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
@media (min-width:1440px){.wrap{max-width:1320px}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid var(--line-soft);
  transition:background var(--ease),border-color var(--ease);
}
.site-header.is-stuck{background:rgba(247,245,240,.86);backdrop-filter:saturate(160%) blur(10px);border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:28px;height:72px;transition:height var(--ease)}
.site-header.is-stuck .nav{height:62px}
.brand{display:flex;align-items:center;gap:10px;min-height:44px}
.brand-mark{
  width:30px;height:30px;border-radius:6px;background:var(--ink);
  display:flex;align-items:center;justify-content:center;
  color:var(--paper);font-size:12px;font-weight:700;letter-spacing:.04em;flex:0 0 auto;
}
.brand-mark::after{content:"";width:8px;height:8px;background:var(--accent);border-radius:2px;position:absolute;transform:translate(9px,-9px)}
.brand-text{font-size:17px;font-weight:700;letter-spacing:.02em;color:var(--ink)}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;height:40px;padding:0 14px;
  font-size:15px;color:var(--text-2);border-radius:var(--pill);
  transition:color var(--ease),background var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;background:var(--ink);
  transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-links a:hover{color:var(--ink)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.is-active{color:var(--ink);font-weight:600;background:var(--bg-2)}
.nav-links a.is-active::after{transform:scaleX(0)}
.nav-side{display:flex;align-items:center;gap:12px}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;
  border-radius:var(--pill);color:var(--ink);
}
.nav-toggle i{font-size:16px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper);box-shadow:var(--shadow)}
.btn-primary:hover{background:var(--accent);color:var(--ink-deep);box-shadow:var(--shadow-h);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--ink);border-color:rgba(14,59,60,.28)}
.btn-ghost:hover{background:var(--bg-2);box-shadow:var(--shadow)}
.btn-sm{height:40px;padding:0 20px;font-size:14px}
.btn:active{transform:translateY(0)}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--ink);
  border-bottom:1px solid rgba(14,59,60,.28);padding-bottom:2px;transition:color var(--ease),border-color var(--ease);
}
.link-more span{transition:transform var(--ease)}
.link-more:hover{color:var(--accent);border-color:var(--accent)}
.link-more:hover span{transform:translateX(4px)}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity 560ms var(--ease),transform 560ms var(--ease)}
.js .reveal.is-in{opacity:1;transform:none}

/* ---------- hero ---------- */
.hero{padding:76px 0 88px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(14,59,60,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(14,59,60,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.55),transparent 78%);
  pointer-events:none;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.18em;color:var(--accent);
  font-weight:700;text-transform:uppercase;margin-bottom:20px;
}
.hero h1{
  font-size:clamp(38px,5.4vw,70px);line-height:1.06;letter-spacing:-.02em;font-weight:800;
  color:var(--ink);max-width:11em;
}
.hero-sub{margin-top:22px;font-size:17px;line-height:1.85;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero-stats{display:flex;flex-wrap:wrap;gap:0;margin-top:44px;border-top:1px solid var(--line)}
.hero-stats li{display:flex;flex-direction:column;padding:18px 30px 0 0;margin-right:30px;border-right:1px solid var(--line)}
.hero-stats li:last-child{border-right:none;margin-right:0;padding-right:0}
.hero-stats strong{font-size:21px;color:var(--ink);font-weight:700;line-height:1.3}
.hero-stats span{font-size:13px;color:var(--text-3)}
.hero-media{position:relative}
.hero-media img{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--radius);
  background:var(--bg-2);box-shadow:var(--shadow-h);
}
.hero-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--radius);
  background:rgba(14,59,60,.08);pointer-events:none;
}
.float-card{
  position:absolute;right:-12px;bottom:-18px;z-index:2;
  display:flex;align-items:center;gap:10px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 16px;font-size:13px;color:var(--text-2);
  box-shadow:0 14px 34px -22px rgba(14,59,60,.45);max-width:78%;
}
.float-card .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 auto}

/* ---------- section base ---------- */
.section{padding:var(--sec-y) 0}
.section-alt{background:var(--bg-2)}
.section-paper{background:var(--paper)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:52px}
.section-title{font-size:clamp(26px,3.2vw,42px);line-height:1.2;font-weight:700;color:var(--ink);letter-spacing:-.01em;display:flex;align-items:center;gap:14px}
.section-title::before{content:"";width:6px;height:6px;background:var(--accent);flex:0 0 auto}
.section-desc{margin-top:12px;font-size:15px;color:var(--text-2);max-width:620px}

/* ---------- service numbered list ---------- */
.svc-list{border-top:1px solid var(--line)}
.svc-item{
  display:grid;grid-template-columns:96px 1fr 60px;align-items:center;gap:24px;
  padding:28px 20px 28px 8px;border-bottom:1px solid var(--line);
  transition:background var(--ease),transform var(--ease),padding var(--ease);
}
.svc-item:hover{background:var(--paper);transform:translateX(6px)}
.svc-no{font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.06em}
.svc-title{font-size:19px;font-weight:600;color:var(--ink);line-height:1.4}
.svc-text{margin-top:6px;font-size:14.5px;color:var(--text-2);line-height:1.8;max-width:60em}
.svc-arrow{justify-self:end;color:var(--text-3);font-size:18px;transition:color var(--ease),transform var(--ease)}
.svc-item:hover .svc-arrow{color:var(--accent);transform:translateX(4px)}

/* ---------- stats band ---------- */
.band{background:var(--ink);color:var(--paper);padding:88px 0}
.band-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.band-item{padding:8px 32px;border-right:1px solid rgba(251,249,245,.16)}
.band-item:last-child{border-right:none}
.band-item:first-child{padding-left:0}
.band-num{font-size:clamp(34px,4.4vw,60px);font-weight:800;line-height:1.1;letter-spacing:-.02em;color:var(--paper)}
.band-num small{font-size:.42em;font-weight:600;margin-left:6px;color:rgba(251,249,245,.7)}
.band-label{margin-top:12px;font-size:14px;color:rgba(251,249,245,.72);line-height:1.7}
.band-note{margin-top:38px;font-size:13.5px;color:rgba(251,249,245,.6);border-top:1px solid rgba(251,249,245,.16);padding-top:22px;max-width:760px}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.card{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-h);border-color:rgba(14,59,60,.2)}
.card-media{display:block;overflow:hidden;background:var(--bg-2)}
.card-media img{width:100%;aspect-ratio:16/9;object-fit:cover;transition:transform 480ms var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1 1 auto}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--pill);
  font-size:12px;color:var(--ink);background:var(--bg-2);border:1px solid transparent;
  transition:border-color var(--ease),color var(--ease);align-self:flex-start;
}
.card:hover .badge{border-color:var(--accent);color:var(--accent)}
.card-title{margin-top:14px;font-size:17.5px;line-height:1.5;font-weight:600;color:var(--ink)}
.card-title a{background-image:linear-gradient(var(--ink),var(--ink));background-size:0 1px;background-repeat:no-repeat;background-position:0 100%;transition:background-size var(--ease)}
.card-title a:hover{background-size:100% 1px}
.card-desc{margin-top:10px;font-size:14px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-foot{margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line-soft)}
.empty-state{
  grid-column:1/-1;border:1px dashed var(--line);border-radius:var(--radius);
  padding:56px 24px;text-align:center;color:var(--text-3);font-size:15px;background:var(--paper);
}
.empty-state i{display:block;font-size:26px;margin-bottom:12px;color:var(--bg-2)}

/* ---------- cases ---------- */
.case-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:24px}
.case-card{position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid var(--line);background:var(--bg-2)}
.case-card.big{grid-column:span 7}
.case-card.small{grid-column:span 5}
.case-card img{width:100%;height:100%;object-fit:cover;transition:transform 520ms var(--ease)}
.case-card.big img{aspect-ratio:16/9}
.case-card.small img{aspect-ratio:16/7}
.case-card:hover img{transform:scale(1.04)}
.case-overlay{
  position:absolute;inset:auto 0 0 0;padding:22px;
  background:linear-gradient(180deg,rgba(8,41,42,0) 0%,rgba(8,41,42,.82) 100%);
  color:var(--paper);
}
.case-overlay h3{font-size:17px;font-weight:600;line-height:1.4}
.case-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.case-tags span{font-size:12px;color:rgba(251,249,245,.78);border:1px solid rgba(251,249,245,.3);border-radius:var(--pill);padding:2px 10px}

/* ---------- plans ---------- */
.plan-row{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;padding:64px 0;border-top:1px solid var(--line)}
.plan-row:first-of-type{border-top:none;padding-top:0}
.plan-row:last-of-type{padding-bottom:0}
.plan-row.reverse .plan-media{order:2}
.plan-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);background:var(--bg-2)}
.plan-tag{display:inline-block;font-size:12px;letter-spacing:.12em;color:var(--accent);font-weight:700;margin-bottom:14px}
.plan-title{font-size:clamp(22px,2.4vw,30px);font-weight:700;color:var(--ink);line-height:1.35}
.plan-text{margin-top:14px;font-size:15px;color:var(--text-2);max-width:34em}
.plan-list{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.plan-list li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2)}
.plan-list li::before{content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--accent);border-radius:1px}
.plan-row .link-more{margin-top:24px}

/* ---------- faq ---------- */
.faq-wrap{max-width:820px}
.faq-list{border-top:1px solid var(--line);background:transparent}
.faq-list .accordion-item{border-bottom:1px solid var(--line)}
.faq-list .accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:24px 0;font-size:17.5px;font-weight:600;color:var(--ink);
  background:transparent;border:none;line-height:1.5;transition:color var(--ease);
}
.faq-list .accordion-title:hover{color:var(--accent)}
.faq-list .accordion-title::before{
  content:"\002B";order:2;font-size:22px;font-weight:400;color:var(--accent);
  transition:transform var(--ease);line-height:1;flex:0 0 auto;
}
.faq-list .accordion-item.is-active .accordion-title::before{transform:rotate(45deg)}
.faq-list .accordion-content{
  display:none;padding:0 0 26px;background:transparent;border:none;
  color:var(--text-2);font-size:15px;line-height:1.95;max-width:760px;
}
.faq-list .accordion-content p + p{margin-top:12px}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:var(--paper);padding:76px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:40px;flex-wrap:wrap}
.cta-inner h2{font-size:clamp(24px,2.8vw,36px);font-weight:700;line-height:1.3;max-width:22em}
.cta-inner p{margin-top:12px;font-size:14.5px;color:rgba(251,249,245,.72)}
.cta-band .btn-primary{background:var(--paper);color:var(--ink)}
.cta-band .btn-primary:hover{background:var(--accent);color:var(--ink-deep)}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start}
.contact-info p.lead{font-size:16px;color:var(--text-2);max-width:32em}
.info-list{margin-top:32px;border-top:1px solid var(--line)}
.info-list li{display:flex;gap:16px;padding:16px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--text-2)}
.info-list li i{color:var(--accent);width:18px;text-align:center;padding-top:5px}
.info-list strong{display:block;color:var(--ink);font-weight:600;font-size:15px}
.contact-form{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:20px}
.field label{display:block;font-size:14px;font-weight:600;color:var(--ink);margin-bottom:8px}
.field .req{color:var(--accent);font-size:12.5px;margin-left:6px;font-weight:600}
.field input,.field textarea{
  width:100%;font-size:16px;padding:12px 14px;border:1px solid var(--bg-2);
  border-radius:var(--radius-sm);background:#fff;color:var(--text);
  transition:border-color var(--ease),box-shadow var(--ease);
}
.field textarea{min-height:120px;resize:vertical;line-height:1.8}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);box-shadow:0 0 0 3px rgba(14,59,60,.12);
}
.form-note{margin-top:14px;font-size:12.5px;color:var(--text-3)}
.form-msg{margin-top:14px;font-size:14px;color:var(--ink);display:none}
.form-msg.is-show{display:block}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(251,249,245,.72);padding:72px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:56px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px}
.footer-brand .brand-mark{background:var(--paper);color:var(--ink)}
.footer-brand span{color:var(--paper);font-size:17px;font-weight:700}
.footer-grid p{font-size:14px;line-height:1.85;max-width:26em}
.footer-title{font-size:14px;color:rgba(251,249,245,.5);margin-bottom:18px;font-weight:600;letter-spacing:.04em}
.footer-links li{margin-bottom:12px}
.footer-links a{font-size:14px;transition:color var(--ease)}
.footer-links a:hover{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(251,249,245,.14);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(251,249,245,.5);
}

/* ---------- mobile panel ---------- */
.mobile-panel{
  position:fixed;inset:0;z-index:120;background:#fff;
  transform:translateX(100%);transition:transform 320ms var(--ease);
  display:flex;flex-direction:column;padding:24px;
}
.mobile-panel.is-open{transform:translateX(0)}
.mobile-panel-head{display:flex;align-items:center;justify-content:space-between;height:52px}
.mobile-close{width:44px;height:44px;border:1px solid var(--line);border-radius:var(--pill);background:transparent;color:var(--ink)}
.mobile-panel nav{margin-top:28px;display:flex;flex-direction:column}
.mobile-panel nav a{
  font-size:22px;font-weight:600;color:var(--ink);padding:20px 0;border-bottom:1px solid var(--line);
}
.mobile-panel nav a.is-active{color:var(--accent)}
.mobile-panel .btn{margin-top:auto}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec-y:80px}
  .nav-links{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .nav-side .btn{display:none}
  .hero{padding:52px 0 68px}
  .hero-grid{grid-template-columns:1fr;gap:44px}
  .hero-media{order:2}
  .float-card{right:12px;bottom:12px}
  .cards{grid-template-columns:repeat(2,1fr);gap:22px}
  .band-inner{grid-template-columns:repeat(2,1fr);row-gap:36px}
  .band-item{padding:8px 24px}
  .band-item:nth-child(2){border-right:none}
  .band-item:nth-child(3){padding-left:0}
  .case-card.big,.case-card.small{grid-column:span 6}
  .plan-row{grid-template-columns:1fr;gap:32px;padding:48px 0}
  .plan-row.reverse .plan-media{order:0}
  .contact{grid-template-columns:1fr;gap:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
}
@media (max-width:639px){
  :root{--sec-y:64px}
  .wrap{padding:0 20px}
  .site-header .nav{height:64px}
  .cards{grid-template-columns:1fr;gap:18px}
  .section-head{flex-direction:column;align-items:flex-start;gap:18px;margin-bottom:34px}
  .svc-item{grid-template-columns:56px 1fr;gap:16px;padding:22px 8px 22px 0}
  .svc-arrow{display:none}
  .hero h1{max-width:100%}
  .hero-actions .btn{flex:1 1 100%}
  .hero-stats li{padding:14px 16px 0 0;margin-right:16px}
  .hero-stats strong{font-size:18px}
  .band{padding:60px 0}
  .band-inner{grid-template-columns:1fr 1fr;row-gap:28px}
  .band-item{padding:6px 16px}
  .case-card.big,.case-card.small{grid-column:span 12}
  .contact-form{padding:22px}
  .footer-grid{grid-template-columns:1fr;gap:30px;padding-bottom:36px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-band .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#0E3B3C;
  --ink-deep:#08292A;
  --accent:#FF6A3D;
  --bg:#F7F5F0;
  --bg-alt:#ECE9E2;
  --surface:#FBF9F5;
  --text:#12161A;
  --text-2:#5A625F;
  --text-3:#8B918D;
  --line:rgba(14,59,60,.12);
  --line-soft:rgba(14,59,60,.08);
  --radius:8px;
  --radius-sm:6px;
  --shadow-1:0 1px 2px rgba(14,59,60,.05);
  --shadow-2:0 14px 34px -18px rgba(14,59,60,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
button{font-family:inherit;font-size:inherit;border:0;background:none;cursor:pointer;color:inherit;}
input,textarea{font-family:inherit;font-size:16px;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.wrap{max-width:1320px;}}
.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){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;animation-duration:.01ms !important;}
}

/* ---------- 阅读进度 ---------- */
.reading-progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:300;transition:width .12s linear;}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:200;
  background:rgba(247,245,240,.86);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:background .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(247,245,240,.95);border-bottom-color:var(--line);box-shadow:0 1px 0 rgba(14,59,60,.04);}
.nav{display:flex;align-items:center;height:72px;transition:height .24s var(--ease);}
.site-header.is-scrolled .nav{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;}
.brand-mark{
  width:32px;height:32px;border-radius:8px;
  background:var(--ink);color:var(--surface);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;
}
.brand-text{font-size:17px;color:var(--ink);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  padding:10px 14px;font-size:15px;color:var(--text-2);
  border-radius:999px;transition:color .24s var(--ease),background .24s var(--ease);
  min-height:44px;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:3px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);border-radius:2px;
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;}
.nav-links a.is-active::after{transform:scaleX(1);}
.nav-side{display:flex;align-items:center;gap:14px;margin-left:26px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:999px;
  align-items:center;justify-content:center;color:var(--ink);
  border:1px solid var(--line);background:var(--surface);
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease),transform .24s var(--ease),box-shadow .24s var(--ease);
  min-width:44px;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--ink);color:var(--surface);box-shadow:var(--shadow-1);}
.btn-primary:hover{background:var(--accent);color:var(--ink-deep);box-shadow:var(--shadow-2);transform:translateY(-2px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--ink);}
.btn-ghost:hover{background:var(--bg-alt);}
.btn-light{background:var(--surface);color:var(--ink);}
.btn-light:hover{background:var(--accent);color:var(--ink-deep);}
.text-link{display:inline-flex;align-items:center;gap:8px;color:var(--ink);font-weight:600;font-size:15px;position:relative;}
.text-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:1px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.text-link:hover::after{transform:scaleX(1);}
.text-link i{transition:transform .24s var(--ease);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- 面包屑 ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--surface);}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:16px 0;font-size:13px;color:var(--text-3);}
.crumb a{color:var(--text-2);}
.crumb a:hover{color:var(--ink);text-decoration:underline;}
.crumb .sep{color:rgba(14,59,60,.28);}
.crumb .cur{color:var(--text-3);max-width:60ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头部 ---------- */
.article-head{
  position:relative;padding:56px 0 38px;background:var(--bg);
  border-bottom:1px solid var(--line);
}
.article-head::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:36px 36px;opacity:.55;pointer-events:none;
}
.article-head .wrap{position:relative;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg-alt);
  color:var(--ink);font-size:12px;font-weight:600;letter-spacing:.06em;
}
.article-head h1{
  margin-top:20px;
  font-size:clamp(28px,3.6vw,46px);
  line-height:1.24;font-weight:700;letter-spacing:-.02em;
  color:var(--ink);max-width:22ch;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  margin-top:22px;padding-top:20px;border-top:1px solid var(--line);
  font-size:14px;color:var(--text-2);
}
.article-meta .dot{width:4px;height:4px;border-radius:50%;background:rgba(14,59,60,.28);}
.article-meta i{color:var(--accent);margin-right:6px;}

/* ---------- 文章主体 ---------- */
.article-layout{padding:56px 0 24px;}
.article-shell{max-width:760px;margin:0 auto;}
.article-body{font-size:17px;line-height:1.95;color:var(--text);}
.article-body>*:first-child{margin-top:0;}
.article-body p{margin:0 0 1.4em;}
.article-body h2{
  position:relative;margin:44px 0 16px;padding-left:16px;
  font-size:clamp(24px,2.4vw,30px);line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--ink);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.42em;width:6px;height:6px;background:var(--accent);
}
.article-body h3{margin:32px 0 12px;font-size:22px;line-height:1.4;font-weight:600;color:var(--ink);}
.article-body h4{margin:24px 0 10px;font-size:18px;font-weight:600;color:var(--ink);}
.article-body ul{margin:0 0 1.4em;}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:10px;}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.62em;width:8px;height:8px;border-radius:1px;background:var(--accent);
}
.article-body ol{margin:0 0 1.4em;padding-left:24px;list-style:decimal;}
.article-body ol li{margin-bottom:10px;}
.article-body blockquote{
  margin:28px 0;padding:18px 22px;background:var(--bg-alt);
  border-left:3px solid var(--accent);border-radius:0 var(--radius) var(--radius) 0;
  color:var(--text-2);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{border-radius:var(--radius);margin:28px auto;box-shadow:var(--shadow-1);}
.article-body figure{margin:28px 0;}
.article-body figure img{margin:0 auto;}
.article-body figcaption{margin-top:10px;text-align:center;font-size:13px;color:var(--text-3);line-height:1.7;}
.article-body a{color:var(--ink);border-bottom:1px solid rgba(14,59,60,.3);}
.article-body a:hover{color:var(--accent);border-bottom-color:var(--accent);}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top;}
.article-body th{color:var(--ink);font-weight:600;background:var(--surface);}
.article-body code{background:var(--bg-alt);padding:2px 6px;border-radius:4px;font-size:15px;}
.article-body hr{border:0;border-top:1px solid var(--line);margin:36px 0;}

/* ---------- 标签与返回 ---------- */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:44px;padding-top:24px;border-top:1px solid var(--line);}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;
  border:1px solid var(--line);border-radius:999px;
  font-size:13px;color:var(--text-2);background:var(--surface);
  transition:border-color .24s var(--ease),color .24s var(--ease);
}
.tag:hover{border-color:var(--accent);color:var(--ink);}
.article-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:28px;padding-bottom:8px;}

/* ---------- 无内容状态 ---------- */
.empty-state{
  margin:8px 0 24px;padding:56px 28px;text-align:center;
  border:1px dashed var(--line);border-radius:var(--radius);background:var(--surface);
}
.empty-state i{font-size:30px;color:var(--accent);}
.empty-state h2{margin:18px 0 10px;font-size:22px;color:var(--ink);}
.empty-state p{color:var(--text-2);font-size:15px;margin-bottom:22px;}

/* ---------- 相关推荐 ---------- */
.related{padding:24px 0 72px;}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.section-head h2{
  position:relative;padding-left:16px;font-size:clamp(22px,2.2vw,28px);
  font-weight:700;letter-spacing:-.01em;color:var(--ink);line-height:1.3;
}
.section-head h2::before{content:"";position:absolute;left:0;top:.38em;width:6px;height:6px;background:var(--accent);}
.section-head p{font-size:14px;color:var(--text-2);margin-top:8px;padding-left:16px;}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.card{
  display:flex;flex-direction:column;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(14,59,60,.2);}
.card-media{position:relative;aspect-ratio:16/9;background:var(--bg-alt);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:12px;flex:1;}
.card-body h3{font-size:18px;line-height:1.45;font-weight:600;color:var(--ink);}
.card:hover .card-body h3{text-decoration:underline;text-decoration-color:var(--accent);text-underline-offset:4px;}
.card-body p{font-size:14px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{
  margin-top:auto;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);padding-top:14px;border-top:1px solid var(--line-soft);
}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--ink);color:var(--surface);}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding:52px 0;}
.cta-inner h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.01em;line-height:1.3;}
.cta-inner p{margin-top:10px;font-size:14px;color:rgba(251,249,245,.72);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink-deep);color:rgba(251,249,245,.82);padding:72px 0 28px;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--surface);}
.site-footer .brand-mark{background:var(--accent);color:var(--ink-deep);}
.site-footer p{margin-top:16px;line-height:1.85;color:rgba(251,249,245,.66);max-width:34ch;}
.footer-title{margin-bottom:16px;font-size:14px;font-weight:600;color:var(--surface);letter-spacing:.04em;}
.footer-links li{margin-bottom:11px;}
.footer-links a,.footer-links span{color:rgba(251,249,245,.7);transition:color .24s var(--ease);}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid rgba(251,249,245,.16);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;
  font-size:13px;color:rgba(251,249,245,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{
    position:fixed;left:0;right:0;top:60px;bottom:0;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    background:var(--surface);padding:24px 24px 40px;margin:0;
    overflow-y:auto;z-index:190;box-shadow:var(--shadow-2);
  }
  .nav-links.is-open{display:flex;}
  .nav-links a{
    font-size:20px;padding:18px 4px;border-radius:0;border-bottom:1px solid var(--line);min-height:56px;
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{color:var(--accent);}
  .nav-toggle{display:inline-flex;}
  .nav-side .btn{display:none;}
  .nav-side{margin-left:auto;}
  .card-grid{grid-template-columns:repeat(2,1fr);gap:20px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .article-head{padding:36px 0 28px;}
  .article-head h1{max-width:none;}
  .article-layout{padding:36px 0 16px;}
  .article-body{font-size:16px;line-height:1.9;}
  .article-body h2{margin-top:34px;}
  .article-body table{font-size:14px;}
  .article-body th,.article-body td{padding:10px 8px;}
  .card-grid{grid-template-columns:1fr;gap:18px;}
  .cta-inner{padding:40px 0;}
  .site-footer{padding:52px 0 24px;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:10px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .article-foot .btn{width:100%;}
}

/* roulang page: category1 */
:root{
  --ink:#0E3B3C;
  --ink-deep:#08292A;
  --accent:#FF6A3D;
  --bg:#F7F5F0;
  --bg-2:#ECE9E2;
  --paper:#FBF9F5;
  --text:#12161A;
  --text-2:#5A625F;
  --text-3:#8B918D;
  --line:rgba(14,59,60,.12);
  --line-strong:rgba(14,59,60,.22);
  --radius:8px;
  --radius-sm:6px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(14,59,60,.05);
  --shadow-2:0 14px 34px -18px rgba(14,59,60,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Helvetica,Arial,sans-serif;
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius);}
a{color:inherit;text-decoration:none;transition:color 240ms var(--ease),background-color 240ms var(--ease),border-color 240ms var(--ease);}
a:hover{color:var(--ink);}
p{margin:0 0 1em;}
h1,h2,h3,h4{margin:0;color:inherit;font-weight:700;line-height:1.25;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font:inherit;color:inherit;cursor:pointer;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(247,245,240,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid transparent;
  transition:border-color 240ms var(--ease),box-shadow 240ms var(--ease),background-color 240ms var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.nav{display:flex;align-items:center;gap:20px;height:72px;transition:height 240ms var(--ease);}
.site-header.is-scrolled .nav{height:60px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:32px;height:32px;border-radius:var(--radius-sm);
  background:var(--ink);color:var(--paper);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;letter-spacing:0;
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink);letter-spacing:.01em;}
.nav-links{display:flex;align-items:center;gap:2px;margin-left:auto;}
.nav-links a{
  position:relative;
  padding:8px 14px;border-radius:var(--pill);
  font-size:15px;color:var(--text-2);
}
.nav-links a:hover{color:var(--ink);background:var(--bg-2);}
.nav-links a.is-active{background:var(--bg-2);color:var(--ink);font-weight:600;}
.nav-side{display:flex;align-items:center;gap:10px;margin-left:8px;}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:var(--pill);
  border:1px solid var(--line-strong);background:transparent;color:var(--ink);
  align-items:center;justify-content:center;
}
.mobile-panel{
  position:absolute;left:0;right:0;top:100%;
  background:var(--paper);border-bottom:1px solid var(--line);
  box-shadow:var(--shadow-2);padding:8px 20px 24px;display:none;
}
.mobile-panel.is-open{display:block;}
.mobile-nav{display:grid;}
.mobile-nav a{
  padding:16px 2px;border-bottom:1px solid var(--line);
  font-size:18px;font-weight:600;color:var(--ink);
}
.mobile-nav a.is-active{color:var(--accent);}
.mobile-cta{margin-top:20px;width:100%;justify-content:center;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:background-color 240ms var(--ease),color 240ms var(--ease),transform 240ms var(--ease),border-color 240ms var(--ease),box-shadow 240ms var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--accent);color:var(--ink-deep);transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost:hover{background:var(--bg-2);}
.btn-sm{height:38px;padding:0 18px;font-size:14px;}
.btn-light{background:var(--paper);color:var(--ink);}
.btn-light:hover{background:var(--accent);color:var(--ink-deep);}
.text-link{
  display:inline-flex;align-items:center;gap:6px;color:var(--ink);font-weight:600;font-size:15px;
}
.text-link i{transition:transform 240ms var(--ease);}
.text-link:hover i{transform:translateX(4px);}

/* ---------- page head ---------- */
.page-head{padding:64px 0 40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.18em;font-weight:700;color:var(--accent);
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--accent);display:inline-block;}
.page-head h1{
  font-size:clamp(32px,4.6vw,56px);
  font-weight:800;line-height:1.12;letter-spacing:-.02em;
  margin:18px 0 16px;color:var(--ink);
}
.page-head .lead{max-width:660px;color:var(--text-2);font-size:17px;margin:0;}
.head-rule{margin-top:34px;height:1px;background:var(--line);}

/* ---------- sections ---------- */
.section{padding:88px 0;}
.section-tight{padding:64px 0;}
.section-alt{background:var(--bg-2);}
.sec-head{margin-bottom:40px;}
.sec-head h2{
  font-size:clamp(26px,3.2vw,40px);font-weight:700;line-height:1.25;color:var(--ink);
  display:flex;align-items:center;gap:12px;
}
.sec-head h2::before{content:"";width:6px;height:6px;background:var(--accent);flex:0 0 auto;}
.sec-head p{margin:12px 0 0;color:var(--text-2);max-width:600px;font-size:16px;}

/* ---------- cards ---------- */
.cards-row > .cell{display:flex;}
.card{
  width:100%;display:flex;flex-direction:column;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.card-media{position:relative;aspect-ratio:16/9;background:var(--bg-2);overflow:hidden;}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 420ms var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.badge{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12px;line-height:1.6;padding:3px 10px;
  border:1px solid var(--line-strong);border-radius:var(--pill);
  background:var(--bg-2);color:var(--ink);
}
.card:hover .badge{border-color:rgba(255,106,61,.5);}
.card h3{font-size:19px;font-weight:600;line-height:1.45;color:var(--ink);}
.card p{
  font-size:14.5px;line-height:1.8;color:var(--text-2);margin:0;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);
}
.card-foot i{color:var(--accent);}

/* ---------- stats ---------- */
.stats-band{background:var(--ink);color:var(--paper);}
.stats-band .sec-head h2{color:var(--paper);}
.stats-band .sec-head p{color:rgba(251,249,245,.7);}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.stat{padding:6px 28px;border-left:1px solid rgba(251,249,245,.16);}
.stat:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-size:clamp(40px,4.6vw,64px);font-weight:800;line-height:1.1;
  color:#fff;display:flex;align-items:baseline;gap:6px;
}
.stat-num span{font-size:15px;font-weight:500;color:rgba(251,249,245,.72);letter-spacing:.02em;}
.stat-label{margin-top:8px;font-size:14px;color:rgba(251,249,245,.72);}
.stats-note{margin-top:36px;font-size:13px;color:rgba(251,249,245,.55);}

/* ---------- numbered rows ---------- */
.rows{border-top:1px solid var(--line);}
.row-item{
  display:grid;grid-template-columns:76px 1fr 36px;gap:24px;align-items:center;
  padding:26px 18px 26px 0;border-bottom:1px solid var(--line);
  transition:background-color 240ms var(--ease),transform 240ms var(--ease);
}
.row-item:hover{background:var(--bg-2);transform:translateX(6px);}
.row-num{font-size:20px;font-weight:700;color:var(--accent);letter-spacing:.04em;}
.row-item h3{font-size:18px;font-weight:600;color:var(--ink);margin-bottom:4px;}
.row-item p{margin:0;font-size:14.5px;color:var(--text-2);}
.row-arrow{justify-self:end;color:var(--text-3);font-size:15px;}
.row-item:hover .row-arrow{color:var(--accent);}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.step{padding-top:22px;border-top:2px solid var(--line-strong);}
.step:hover{border-top-color:var(--accent);}
.step-num{font-size:13px;letter-spacing:.16em;font-weight:700;color:var(--accent);}
.step h3{font-size:18px;font-weight:600;color:var(--ink);margin:10px 0 8px;}
.step p{margin:0;font-size:14.5px;color:var(--text-2);}

/* ---------- feature rows ---------- */
.feature{display:grid;grid-template-columns:repeat(12,1fr);gap:32px;align-items:center;}
.feature + .feature{margin-top:72px;}
.feature-media{grid-column:1 / span 5;}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.feature-text{grid-column:7 / span 6;}
.feature.rev .feature-media{grid-column:8 / span 5;order:2;}
.feature.rev .feature-text{grid-column:1 / span 6;order:1;}
.feature-tag{
  display:inline-block;font-size:12px;letter-spacing:.14em;font-weight:700;color:var(--accent);
}
.feature-text h3{font-size:clamp(20px,2.2vw,26px);font-weight:700;color:var(--ink);margin:12px 0 12px;}
.feature-text p{color:var(--text-2);font-size:15.5px;margin-bottom:18px;}

/* ---------- faq ---------- */
.faq{border-top:1px solid var(--line);max-width:900px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;padding:24px 2px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  text-align:left;font-size:18px;font-weight:600;color:var(--ink);
  transition:color 240ms var(--ease);
}
.faq-q:hover{color:var(--accent);}
.faq-icon{
  flex:0 0 auto;width:26px;height:26px;border-radius:var(--pill);
  border:1px solid var(--line-strong);color:var(--accent);
  display:inline-flex;align-items:center;justify-content:center;font-size:12px;
  transition:transform 320ms var(--ease),background-color 240ms var(--ease);
}
.faq-item.is-open .faq-icon{transform:rotate(45deg);background:var(--bg-2);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease);}
.faq-a p{
  max-width:760px;padding:0 2px 24px;margin:0;
  font-size:15px;line-height:1.9;color:var(--text-2);
}

/* ---------- cta band ---------- */
.cta-band{position:relative;overflow:hidden;isolation:isolate;}
.cta-band::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.cta-band::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(90deg,rgba(8,41,42,.95) 0%,rgba(8,41,42,.78) 55%,rgba(8,41,42,.62) 100%);
}
.cta-inner{
  padding:76px 0;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-inner h2{
  color:#fff;font-size:clamp(24px,3vw,36px);font-weight:700;line-height:1.3;
  max-width:22ch;
}
.cta-inner p{margin:12px 0 0;color:rgba(251,249,245,.75);font-size:15px;max-width:46ch;}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(251,249,245,.78);padding:72px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:17px;font-weight:700;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--paper);color:var(--ink);}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(251,249,245,.65);margin:0;}
.footer-title{font-size:14px;font-weight:600;color:rgba(251,249,245,.55);margin:0 0 16px;}
.footer-links{display:grid;gap:10px;font-size:14px;}
.footer-links a{color:rgba(251,249,245,.8);}
.footer-links a:hover{color:var(--accent);}
.footer-links span{color:rgba(251,249,245,.7);}
.footer-bottom{
  margin-top:48px;padding-top:20px;border-top:1px solid rgba(251,249,245,.14);
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(251,249,245,.55);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 600ms var(--ease),transform 600ms var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .nav-side .btn{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:72px 0;}
  .page-head{padding:48px 0 32px;}
  .stats{grid-template-columns:repeat(2,1fr);gap:32px 0;}
  .stat{padding:0 24px;}
  .stat:nth-child(odd){border-left:0;padding-left:0;}
  .steps{grid-template-columns:repeat(2,1fr);gap:32px 24px;}
  .feature,
  .feature.rev{grid-template-columns:1fr;gap:24px;}
  .feature-media,
  .feature-text,
  .feature.rev .feature-media,
  .feature.rev .feature-text{grid-column:auto;order:initial;}
  .feature + .feature{margin-top:56px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{padding:60px 0;}
}
@media (max-width:639px){
  .wrap{padding:0 20px;}
  .brand-text{font-size:16px;}
  .section{padding:56px 0;}
  .section-tight{padding:44px 0;}
  .page-head h1{font-size:clamp(28px,8vw,36px);}
  .page-head .lead{font-size:16px;}
  .row-item{grid-template-columns:52px 1fr;gap:16px;padding:22px 12px 22px 0;}
  .row-arrow{display:none;}
  .stats{grid-template-columns:1fr;}
  .stat{border-left:0;padding:0 0 20px;border-bottom:1px solid rgba(251,249,245,.14);}
  .stat:last-child{border-bottom:0;padding-bottom:0;}
  .steps{grid-template-columns:1fr;}
  .faq-q{font-size:16px;padding:20px 2px;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:52px 0;}
  .cta-inner h2{font-size:23px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0E3B3C;
  --ink-deep:#08292A;
  --accent:#FF6A3D;
  --bg:#F7F5F0;
  --bg-alt:#ECE9E2;
  --bg-light:#FBF9F5;
  --text:#12161A;
  --text-2:#5A625F;
  --text-3:#8B918D;
  --line:rgba(14,59,60,.12);
  --line-strong:rgba(14,59,60,.22);
  --line-invert:rgba(251,249,245,.18);
  --radius:8px;
  --radius-sm:6px;
  --pill:999px;
  --sh1:0 1px 2px rgba(14,59,60,.05);
  --sh2:0 14px 34px -18px rgba(14,59,60,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --wrap:1240px;
}
@media (min-width:1440px){ :root{ --wrap:1320px; } }

*,*::before,*::after{ box-sizing:border-box; }
html{ -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",Inter,"Helvetica Neue",system-ui,sans-serif;
  font-size:16px;
  line-height:1.9;
  font-variant-numeric:tabular-nums;
  -webkit-font-smoothing:antialiased;
}
img{ display:block; max-width:100%; height:auto; border:0; }
a{ color:var(--ink); text-decoration:none; transition:color 240ms var(--ease); }
a:hover{ color:var(--accent); }
p{ margin:0 0 16px; }
p:last-child{ margin-bottom:0; }
ul,ol{ margin:0; padding:0; list-style:none; }
h1,h2,h3,h4{ margin:0; font-weight:700; letter-spacing:-.01em; color:var(--ink); }
button{ font-family:inherit; font-size:inherit; cursor:pointer; }
input,textarea,select{ font-family:inherit; font-size:16px; }
:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }

.wrap{
  width:100%;
  max-width:var(--wrap);
  margin:0 auto;
  padding:0 24px;
}
@media (max-width:639px){ .wrap{ padding:0 20px; } }

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(247,245,240,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;
  transition:border-color 240ms var(--ease), box-shadow 240ms var(--ease), background 240ms var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(14,59,60,.04), 0 10px 24px -22px rgba(14,59,60,.5);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:72px;
  transition:height 240ms var(--ease);
}
.site-header.is-scrolled .nav{ height:60px; }
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:19px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-.01em;
  white-space:nowrap;
}
.brand:hover{ color:var(--ink); }
.brand-mark{
  width:34px;
  height:34px;
  flex:0 0 34px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:var(--ink);
  color:var(--bg-light);
  border-radius:var(--radius);
  font-size:17px;
  font-weight:800;
  line-height:1;
  transition:background 240ms var(--ease);
}
.brand:hover .brand-mark{ background:var(--accent); color:var(--ink-deep); }
.nav-links{
  display:flex;
  align-items:center;
  gap:30px;
  font-size:15px;
}
.nav-links a{
  position:relative;
  padding:6px 0;
  color:var(--text-2);
  font-weight:500;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:0;
  bottom:0;
  width:0;
  height:2px;
  background:var(--accent);
  transition:width 240ms var(--ease);
}
.nav-links a:hover{ color:var(--ink); }
.nav-links a:hover::after{ width:100%; }
.nav-links a.is-active{ color:var(--ink); font-weight:700; }
.nav-links a.is-active::after{ width:100%; }
.nav-side{ display:flex; align-items:center; gap:12px; }
.nav-toggle{
  display:none;
  width:44px;
  height:44px;
  border:1px solid var(--line);
  border-radius:var(--pill);
  background:transparent;
  color:var(--ink);
  transition:background 240ms var(--ease), border-color 240ms var(--ease);
}
.nav-toggle:hover{ background:var(--bg-alt); border-color:var(--line-strong); }

.mobile-panel{
  position:fixed;
  left:0; right:0; top:72px; bottom:0;
  z-index:55;
  background:rgba(251,249,245,.98);
  backdrop-filter:blur(10px);
  padding:16px 24px 40px;
  opacity:0;
  transform:translateY(-10px);
  pointer-events:none;
  transition:opacity 240ms var(--ease), transform 240ms var(--ease);
  overflow-y:auto;
}
.mobile-panel.is-open{ opacity:1; transform:none; pointer-events:auto; }
.mobile-panel a{
  display:block;
  padding:18px 0;
  font-size:22px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid var(--line);
}
.mobile-panel a.is-active{ color:var(--accent); }
.mobile-panel .mp-cta{
  margin-top:26px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:50px;
  border-radius:var(--pill);
  background:var(--ink);
  color:var(--bg-light);
  font-size:16px;
  font-weight:600;
  border-bottom:0;
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:47px;
  padding:0 26px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:600;
  line-height:1;
  white-space:nowrap;
  transition:background 240ms var(--ease), color 240ms var(--ease), border-color 240ms var(--ease), transform 240ms var(--ease), box-shadow 240ms var(--ease);
}
.btn-primary{ background:var(--ink); color:var(--bg-light); }
.btn-primary:hover{ background:var(--accent); color:var(--ink-deep); box-shadow:var(--sh2); }
.btn-ghost{ background:transparent; border-color:var(--line-strong); color:var(--ink); }
.btn-ghost:hover{ background:var(--bg-alt); color:var(--ink); }
.btn-sm{ height:40px; padding:0 20px; font-size:14px; }
.btn-accent{ background:var(--accent); color:var(--ink-deep); }
.btn-accent:hover{ background:var(--bg-light); color:var(--ink-deep); }
.text-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid transparent;
  transition:color 240ms var(--ease), border-color 240ms var(--ease);
}
.text-link i{ transition:transform 240ms var(--ease); font-size:13px; }
.text-link:hover{ color:var(--accent); border-bottom-color:var(--accent); }
.text-link:hover i{ transform:translateX(4px); }

/* ---------- shared blocks ---------- */
.section{ padding:104px 0; }
.section-alt{ background:var(--bg-alt); }
.section-soft{ background:var(--bg-light); }
@media (max-width:1023px){ .section{ padding:80px 0; } }
@media (max-width:639px){ .section{ padding:60px 0; } }

.sec-head{ margin-bottom:48px; }
.sec-head h2{
  display:flex;
  align-items:center;
  gap:14px;
  font-size:clamp(26px,3.2vw,42px);
  line-height:1.2;
  letter-spacing:-.02em;
}
.sec-head h2::before{
  content:"";
  width:6px;
  height:6px;
  flex:0 0 6px;
  background:var(--accent);
  border-radius:1px;
}
.sec-head p{
  margin:16px 0 0 20px;
  max-width:720px;
  color:var(--text-2);
  font-size:15px;
  line-height:1.85;
}
@media (max-width:639px){
  .sec-head{ margin-bottom:32px; }
  .sec-head p{ margin-left:0; }
}

.badge{
  display:inline-flex;
  align-items:center;
  height:26px;
  padding:0 12px;
  border-radius:var(--pill);
  border:1px solid var(--line);
  background:var(--bg-alt);
  color:var(--ink);
  font-size:12px;
  font-weight:600;
  letter-spacing:.04em;
  white-space:nowrap;
}

/* ---------- page head ---------- */
.page-head{
  position:relative;
  overflow:hidden;
  padding:76px 0 48px;
  background:var(--bg);
  border-bottom:1px solid var(--line);
}
.page-head::after{
  content:"";
  position:absolute;
  right:0; top:0; bottom:0;
  width:36%;
  background-image:linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size:28px 28px;
  opacity:.55;
  -webkit-mask-image:linear-gradient(90deg, transparent, #000 70%);
  mask-image:linear-gradient(90deg, transparent, #000 70%);
  pointer-events:none;
}
.page-head .wrap{ position:relative; z-index:1; }
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--accent);
  text-transform:uppercase;
}
.page-head h1{
  margin:20px 0 18px;
  max-width:900px;
  font-size:clamp(32px,4.6vw,56px);
  line-height:1.12;
  letter-spacing:-.02em;
  font-weight:800;
}
.page-head .lede{
  max-width:720px;
  font-size:16px;
  line-height:1.9;
  color:var(--text-2);
}
.head-meta{
  display:flex;
  flex-wrap:wrap;
  gap:10px 14px;
  margin-top:28px;
  padding-top:22px;
  border-top:1px solid var(--line);
  font-size:13px;
  color:var(--text-3);
}
.head-meta span{ display:inline-flex; align-items:center; gap:8px; }
.head-meta i{ color:var(--accent); font-size:11px; }
@media (max-width:767px){
  .page-head{ padding:52px 0 34px; }
  .page-head::after{ display:none; }
}

/* ---------- route rail ---------- */
.rail{
  position:relative;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  margin-top:8px;
}
.rail::before{
  content:"";
  position:absolute;
  left:0; right:0; top:23px;
  height:2px;
  background:var(--line);
}
.rail-line{
  position:absolute;
  left:0; top:23px;
  height:2px;
  width:100%;
  background:linear-gradient(90deg, var(--accent), rgba(255,106,61,.25));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 900ms var(--ease);
}
.rail.is-visible .rail-line{ transform:scaleX(1); }
.node{
  position:relative;
  padding-top:56px;
}
.node-dot{
  position:absolute;
  top:14px;
  left:0;
  width:20px;
  height:20px;
  border-radius:50%;
  background:var(--bg);
  border:2px solid var(--accent);
  display:flex;
  align-items:center;
  justify-content:center;
}
.node-dot::after{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--accent);
}
.node-num{
  display:block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--accent);
  margin-bottom:8px;
}
.node h3{
  font-size:18px;
  line-height:1.4;
  margin-bottom:8px;
}
.node p{
  font-size:14px;
  line-height:1.75;
  color:var(--text-2);
}
@media (max-width:1023px){
  .rail{ grid-template-columns:repeat(2,1fr); gap:28px 24px; }
  .rail::before,.rail-line{ display:none; }
  .node{ padding:22px 20px; background:var(--bg-light); border:1px solid var(--line); border-radius:var(--radius); }
  .node-dot{ position:static; margin-bottom:14px; background:transparent; border-color:var(--accent); }
}
@media (max-width:639px){
  .rail{ grid-template-columns:1fr; }
}

/* ---------- alternating rows ---------- */
.alt-wrap{ display:block; }
.alt-row{
  max-width:none;
  margin:0;
  padding:52px 0;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:56px;
  border-bottom:1px solid var(--line);
}
.alt-row:last-child{ border-bottom:0; padding-bottom:0; }
.alt-row:first-child{ padding-top:0; }
.alt-row > .columns{ padding:0; }
.alt-row > .alt-media{
  flex:0 0 41.6666%;
  max-width:41.6666%;
}
.alt-row > .alt-body{
  flex:1 1 46%;
  max-width:100%;
}
.alt-row.is-rev > .alt-media{ order:2; }
.alt-media{
  position:relative;
  aspect-ratio:4/3;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--bg-alt);
  box-shadow:var(--sh1);
}
.alt-media img{
  width:100%;
  height:100%;
  object-fit:cover;
  transition:transform 420ms var(--ease);
}
.alt-row:hover .alt-media img{ transform:scale(1.03); }
.alt-body .badge{ margin-bottom:18px; }
.alt-body h3{
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.35;
  margin-bottom:16px;
}
.alt-body p{
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
  max-width:640px;
}
.alt-body .text-link{ margin-top:22px; }
.alt-foot{
  margin-top:56px;
  padding-top:28px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}
.alt-foot p{ font-size:14px; color:var(--text-3); }
@media (max-width:1023px){
  .alt-row{ gap:28px; padding:40px 0; }
  .alt-row > .alt-media{ flex:0 0 100%; max-width:100%; }
  .alt-row > .alt-body{ flex:0 0 100%; max-width:100%; }
  .alt-row.is-rev > .alt-media{ order:0; }
}

/* ---------- figures (dark) ---------- */
.sec-figures{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--bg-light);
}
.sec-figures::before{
  content:"";
  position:absolute;
  inset:0;
  background:url('/assets/images/backpic/back-3.png') center/cover no-repeat;
  opacity:.14;
}
.sec-figures > .wrap{ position:relative; z-index:1; }
.sec-figures h2{ color:var(--bg-light); }
.sec-figures .sec-head p{ color:rgba(251,249,245,.72); }
.figures{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:0;
  margin-top:8px;
  border-top:1px solid var(--line-invert);
}
.figure{
  padding:38px 32px 8px 0;
  border-right:1px solid var(--line-invert);
}
.figure:last-child{ border-right:0; }
.figure-num{
  display:flex;
  align-items:baseline;
  gap:8px;
  font-size:clamp(38px,4.6vw,64px);
  font-weight:800;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--bg-light);
}
.figure-num small{
  font-size:14px;
  font-weight:600;
  color:var(--accent);
  letter-spacing:.06em;
}
.figure p{
  margin-top:14px;
  font-size:14px;
  line-height:1.75;
  color:rgba(251,249,245,.72);
}
@media (max-width:1023px){
  .figures{ grid-template-columns:repeat(2,1fr); }
  .figure{ padding:30px 24px 6px 0; }
  .figure:nth-child(2){ border-right:0; }
  .figure:nth-child(1),.figure:nth-child(2){ border-bottom:1px solid var(--line-invert); padding-bottom:30px; }
  .figure:nth-child(3){ padding-top:30px; }
  .figure:nth-child(4){ border-right:0; padding-top:30px; }
}

/* ---------- checklist ---------- */
.checklist{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:2px 56px;
  border-top:1px solid var(--line);
}
.checklist li{
  display:flex;
  align-items:flex-start;
  gap:14px;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  font-size:15px;
  line-height:1.8;
  color:var(--text-2);
}
.checklist li::before{
  content:"";
  width:7px;
  height:7px;
  flex:0 0 7px;
  margin-top:11px;
  background:var(--accent);
  border-radius:1px;
  transition:transform 240ms var(--ease);
}
.checklist li:hover{ color:var(--text); }
.checklist li:hover::before{ transform:rotate(45deg); }
@media (max-width:767px){
  .checklist{ grid-template-columns:1fr; gap:0; }
}

/* ---------- FAQ ---------- */
.faq-list{
  max-width:820px;
  border-top:1px solid var(--line);
}
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:24px 0;
  background:none;
  border:0;
  text-align:left;
  font-size:18px;
  font-weight:600;
  color:var(--ink);
  transition:color 240ms var(--ease);
}
.faq-q:hover{ color:var(--accent); }
.faq-icon{
  flex:0 0 auto;
  font-size:14px;
  color:var(--accent);
  transition:transform 240ms var(--ease);
}
.faq-item.is-open .faq-icon{ transform:rotate(45deg); }
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 300ms var(--ease);
}
.faq-a p{
  max-width:760px;
  padding-bottom:26px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}
@media (max-width:639px){
  .faq-q{ font-size:16px; padding:20px 0; }
}

/* ---------- CTA band ---------- */
.cta-band{
  position:relative;
  background:var(--ink-deep);
  color:var(--bg-light);
  padding:64px 0;
}
.cta-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:26px;
}
.cta-inner h2{
  color:var(--bg-light);
  font-size:clamp(22px,2.6vw,32px);
  line-height:1.3;
  letter-spacing:-.01em;
  max-width:640px;
}
.cta-actions{ display:flex; flex-wrap:wrap; gap:12px; }

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink);
  color:var(--bg-light);
  padding:72px 0 30px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px 32px;
  padding-bottom:44px;
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:18px;
  font-weight:700;
  color:var(--bg-light);
  margin-bottom:16px;
}
.footer-brand .brand-mark{ background:var(--bg-light); color:var(--ink); }
.footer-grid p{
  font-size:14px;
  line-height:1.85;
  color:rgba(251,249,245,.68);
  max-width:360px;
}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:rgba(251,249,245,.55);
  letter-spacing:.06em;
  margin-bottom:18px;
}
.footer-links li{ margin-bottom:12px; }
.footer-links a,
.footer-links span{
  font-size:14px;
  color:rgba(251,249,245,.86);
  transition:color 240ms var(--ease);
}
.footer-links a:hover{ color:var(--accent); }
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-top:24px;
  border-top:1px solid var(--line-invert);
  font-size:13px;
  color:rgba(251,249,245,.55);
}
@media (max-width:1023px){
  .footer-grid{ grid-template-columns:1fr 1fr; }
}
@media (max-width:639px){
  .site-footer{ padding:56px 0 26px; }
  .footer-grid{ grid-template-columns:1fr; gap:30px; padding-bottom:32px; }
}

/* ---------- reveal ---------- */
.reveal{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 620ms var(--ease), transform 620ms var(--ease);
}
.reveal.is-visible{ opacity:1; transform:none; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ transition-duration:.01ms !important; animation-duration:.01ms !important; }
  .reveal{ opacity:1; transform:none; }
  .rail-line{ transform:scaleX(1); }
}

/* ---------- responsive nav ---------- */
@media (max-width:1023px){
  .nav-links{ display:none; }
  .nav-side .btn{ display:none; }
  .nav-toggle{ display:inline-flex; align-items:center; justify-content:center; }
}
@media (min-width:1024px){
  .mobile-panel{ display:none; }
}

/* roulang page: category3 */
:root{
  --ink:#0E3B3C;
  --ink-deep:#08292A;
  --orange:#FF6A3D;
  --bg:#F7F5F0;
  --bg-soft:#ECE9E2;
  --paper:#FBF9F5;
  --text:#12161A;
  --text-2:#5A625F;
  --text-3:#8B918D;
  --line:rgba(14,59,60,.12);
  --line-strong:rgba(14,59,60,.22);
  --radius-s:6px;
  --radius:8px;
  --radius-pill:999px;
  --shadow-1:0 1px 2px rgba(14,59,60,.05);
  --shadow-2:0 14px 34px -18px rgba(14,59,60,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --t:240ms;
  --header-h:72px;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  padding-top:var(--header-h);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.9;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{margin:0;font-weight:700;color:var(--text);line-height:1.25;letter-spacing:-0.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;line-height:inherit;}
a{color:inherit;text-decoration:none;background:transparent;transition:color var(--t) var(--ease),border-color var(--t) var(--ease),background-color var(--t) var(--ease);}
a:hover{color:var(--ink);}
img{max-width:100%;height:auto;display:block;border:0;}
button{font-family:inherit;font-size:inherit;border:0;background:none;color:inherit;cursor:pointer;padding:0;}
input,textarea,select{font-family:inherit;font-size:16px;color:inherit;}
figure{margin:0;}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;}
.fa-solid,.fa-regular,.fa-brands{line-height:1;}

/* ---------- layout ---------- */
.wrap{
  width:100%;
  max-width:1240px;
  margin:0 auto;
  padding:0 24px;
}
@media (min-width:1440px){
  .wrap{max-width:1320px;}
}
.section{padding:104px 0;}
.section-soft{background:var(--bg-soft);}
.section-tight{padding:72px 0;}

.row{display:flex;flex-wrap:wrap;max-width:100%;margin-left:-14px;margin-right:-14px;}
.row::before,.row::after{display:none;}
.row .column,.row .columns{float:none;padding-left:14px;padding-right:14px;}
.row.align-middle{align-items:center;}

/* ---------- typography helpers ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--orange);
  font-weight:600;
  margin-bottom:18px;
}
.eyebrow .eyebrow-num{
  font-variant-numeric:tabular-nums;
  font-weight:700;
  color:var(--ink);
  background:var(--bg-soft);
  border-radius:var(--radius-s);
  padding:2px 8px;
  letter-spacing:.06em;
}
.section-head{max-width:760px;margin-bottom:56px;}
.section-head h2{
  position:relative;
  font-size:clamp(28px,3.4vw,44px);
  line-height:1.2;
  padding-left:20px;
  margin-bottom:16px;
}
.section-head h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.34em;
  width:8px;
  height:8px;
  background:var(--orange);
  border-radius:1px;
}
.section-head p{color:var(--text-2);font-size:16px;max-width:640px;}
.section-head.light h2{color:var(--paper);}
.section-head.light p{color:rgba(251,249,245,.76);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:48px;
  padding:0 28px;
  border-radius:var(--radius-pill);
  font-size:15px;
  font-weight:600;
  letter-spacing:.01em;
  border:1px solid transparent;
  transition:background-color var(--t) var(--ease),color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease),box-shadow var(--t) var(--ease);
  white-space:nowrap;
}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-primary{background:var(--ink);color:var(--paper);}
.btn-primary:hover{background:var(--orange);color:var(--ink-deep);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-ghost:hover{background:var(--bg-soft);border-color:var(--ink);color:var(--ink);}
.btn-light{background:var(--paper);color:var(--ink);}
.btn-light:hover{background:var(--orange);color:var(--ink-deep);}
.btn-text{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:15px;
  font-weight:600;
  color:var(--ink);
  border-bottom:1px solid transparent;
}
.btn-text i{transition:transform var(--t) var(--ease);}
.btn-text:hover{border-bottom-color:var(--ink);}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- header / nav ---------- */
.site-header{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:90;
  background:rgba(247,245,240,.94);
  border-bottom:1px solid transparent;
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease),box-shadow var(--t) var(--ease);
}
.site-header.is-scrolled{
  background:rgba(247,245,240,.86);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom-color:var(--line);
  box-shadow:0 1px 2px rgba(14,59,60,.05);
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
  height:var(--header-h);
  transition:height var(--t) var(--ease);
}
.site-header.is-scrolled .nav{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:32px;
  height:32px;
  border-radius:6px;
  background:var(--ink);
  color:var(--paper);
  font-size:16px;
  font-weight:700;
  letter-spacing:0;
}
.brand-text{font-size:18px;font-weight:700;letter-spacing:.02em;color:var(--ink);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:auto;}
.nav-links a{
  position:relative;
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 14px;
  border-radius:var(--radius-pill);
  font-size:15px;
  color:var(--text-2);
  white-space:nowrap;
}
.nav-links a::after{
  content:"";
  position:absolute;
  left:14px;
  right:14px;
  bottom:4px;
  height:2px;
  background:var(--orange);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--t) var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.is-active{color:var(--ink);font-weight:600;background:var(--bg-soft);}
.nav-links a.is-active::after{transform:scaleX(0);}
.nav-side{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:44px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  color:var(--ink);
  font-size:17px;
}
.nav-toggle:hover{background:var(--bg-soft);}
.nav-scrim{
  position:fixed;
  inset:0;
  background:rgba(8,41,42,.42);
  opacity:0;
  visibility:hidden;
  transition:opacity var(--t) var(--ease),visibility var(--t) var(--ease);
  z-index:85;
}
.nav-scrim.is-open{opacity:1;visibility:visible;}

/* ---------- page head ---------- */
.page-head{
  padding:72px 0 44px;
  background:linear-gradient(180deg,#FBF9F5 0%,var(--bg) 100%);
  border-bottom:1px solid var(--line);
}
.page-head h1{
  font-size:clamp(32px,4.4vw,54px);
  line-height:1.12;
  letter-spacing:-0.02em;
  font-weight:800;
  max-width:820px;
  margin-bottom:18px;
}
.page-head-sub{
  font-size:16px;
  color:var(--text-2);
  max-width:680px;
  margin-bottom:32px;
}
.anchor-bar{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.anchor-bar a{
  display:inline-flex;
  align-items:center;
  height:38px;
  padding:0 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:var(--paper);
  font-size:14px;
  color:var(--text-2);
}
.anchor-bar a:hover{border-color:var(--orange);color:var(--ink);background:#fff;}

/* ---------- timeline list ---------- */
.tl-group{margin-bottom:52px;}
.tl-group:last-child{margin-bottom:0;}
.tl-group-head{
  display:flex;
  align-items:center;
  gap:14px;
  padding-bottom:14px;
  margin-bottom:8px;
  border-bottom:1px solid var(--line);
}
.tl-group-head h3{font-size:20px;font-weight:700;}
.tl-group-count{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.timeline{position:relative;padding-left:38px;}
.timeline::before{
  content:"";
  position:absolute;
  left:7px;
  top:12px;
  bottom:12px;
  width:1px;
  background:var(--line-strong);
}
.tl-item{
  position:relative;
  padding:20px 22px 20px 0;
  border-bottom:1px solid var(--line);
  transition:padding-left var(--t) var(--ease);
}
.tl-item:last-child{border-bottom:0;}
.tl-dot{
  position:absolute;
  left:-38px;
  top:30px;
  width:15px;
  height:15px;
  border-radius:50%;
  background:var(--paper);
  border:1px solid var(--line-strong);
  transition:background-color var(--t) var(--ease),border-color var(--t) var(--ease),transform var(--t) var(--ease);
}
.tl-num{
  display:inline-block;
  font-size:12px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--orange);
  font-variant-numeric:tabular-nums;
  margin-bottom:6px;
}
.tl-title{font-size:19px;font-weight:600;line-height:1.45;margin-bottom:6px;}
.tl-desc{font-size:15px;color:var(--text-2);max-width:760px;margin-bottom:8px;}
.tl-meta{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-size:13px;
  color:var(--text-3);
  font-variant-numeric:tabular-nums;
}
.tl-item:hover .tl-dot{background:var(--orange);border-color:var(--orange);transform:scale(1.12);}
.tl-item:hover .tl-title{color:var(--ink);}

/* ---------- dark steps ---------- */
.section-dark{
  position:relative;
  background-color:var(--ink);
  background-image:linear-gradient(120deg,rgba(8,41,42,.92) 0%,rgba(14,59,60,.86) 55%,rgba(8,41,42,.94) 100%),url("/assets/images/backpic/back-3.png");
  background-size:cover;
  background-position:center;
  color:var(--paper);
  overflow:hidden;
}
.section-dark h2,.section-dark h3{color:var(--paper);}
.steps{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:0;
  border-top:1px solid rgba(251,249,245,.18);
}
.step{
  padding:38px 34px 30px 34px;
  border-right:1px solid rgba(251,249,245,.14);
  transition:background-color var(--t) var(--ease);
}
.step:last-child{border-right:0;}
.step:hover{background:rgba(251,249,245,.05);}
.step-num{
  display:block;
  font-size:14px;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--orange);
  font-variant-numeric:tabular-nums;
  margin-bottom:20px;
}
.step h3{font-size:20px;margin-bottom:12px;}
.step p{font-size:15px;color:rgba(251,249,245,.76);line-height:1.85;}

/* ---------- scene ---------- */
.scene-figure{
  position:relative;
  border-radius:var(--radius);
  overflow:hidden;
  background:var(--bg-soft);
  aspect-ratio:4/3;
  box-shadow:var(--shadow-1);
}
.scene-figure img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.scene-figure:hover img{transform:scale(1.03);}
.scene-body{padding-left:20px;}
.scene-body h2{
  position:relative;
  font-size:clamp(26px,3vw,38px);
  line-height:1.22;
  padding-left:20px;
  margin-bottom:18px;
}
.scene-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.34em;
  width:8px;
  height:8px;
  background:var(--orange);
  border-radius:1px;
}
.scene-body > p{color:var(--text-2);margin-bottom:28px;max-width:620px;}
.scene-list li{
  display:flex;
  gap:18px;
  padding:22px 0;
  border-top:1px solid var(--line);
}
.scene-list li:last-child{border-bottom:1px solid var(--line);}
.scene-num{
  flex:0 0 auto;
  font-size:14px;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--orange);
  font-variant-numeric:tabular-nums;
  padding-top:4px;
}
.scene-list h3{font-size:18px;margin-bottom:6px;}
.scene-list p{font-size:15px;color:var(--text-2);}

/* ---------- accordion ---------- */
.accordion{max-width:860px;border-top:1px solid var(--line);}
.acc-item{border-bottom:1px solid var(--line);}
.acc-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  width:100%;
  text-align:left;
  padding:24px 0;
  font-size:18px;
  font-weight:600;
  color:var(--text);
  transition:color var(--t) var(--ease);
}
.acc-head:hover{color:var(--ink);}
.acc-icon{
  position:relative;
  flex:0 0 auto;
  width:20px;
  height:20px;
  transition:transform var(--t) var(--ease);
}
.acc-icon::before,
.acc-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  border-radius:2px;
}
.acc-icon::before{left:0;top:9px;width:20px;height:2px;}
.acc-icon::after{left:9px;top:0;width:2px;height:20px;}
.acc-item.is-open .acc-icon{transform:rotate(45deg);}
.acc-item.is-open .acc-icon::before,
.acc-item.is-open .acc-icon::after{background:var(--orange);}
.acc-panel{
  max-height:0;
  overflow:hidden;
  transition:max-height .34s var(--ease);
}
.acc-inner{
  padding:0 0 26px;
  max-width:760px;
  font-size:15px;
  line-height:1.9;
  color:var(--text-2);
}
.acc-inner p + p{margin-top:12px;}

/* ---------- cta band ---------- */
.cta-band{
  background:var(--ink);
  color:var(--paper);
  padding:64px 0;
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:28px;
}
.cta-inner p{
  font-size:clamp(20px,2.4vw,28px);
  font-weight:700;
  line-height:1.35;
  max-width:640px;
  color:var(--paper);
}

/* ---------- footer ---------- */
.site-footer{
  background:var(--ink-deep);
  color:rgba(251,249,245,.72);
  padding:72px 0 32px;
  font-size:14px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid rgba(251,249,245,.14);
}
.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:17px;
  font-weight:700;
  color:var(--paper);
  margin-bottom:16px;
}
.footer-brand .brand-mark{background:var(--orange);color:var(--ink-deep);}
.footer-grid p{max-width:340px;line-height:1.85;color:rgba(251,249,245,.68);}
.footer-title{
  font-size:14px;
  font-weight:600;
  color:rgba(251,249,245,.6);
  letter-spacing:.04em;
  margin-bottom:18px;
}
.footer-links li{margin-bottom:11px;}
.footer-links a{color:rgba(251,249,245,.82);border-bottom:1px solid transparent;}
.footer-links a:hover{color:var(--orange);border-bottom-color:var(--orange);}
.footer-links span{color:rgba(251,249,245,.66);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding-top:26px;
  font-size:13px;
  color:rgba(251,249,245,.5);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .wrap{padding:0 20px;}
  .section{padding:80px 0;}
  .page-head{padding:56px 0 36px;}
  .nav-links{
    position:fixed;
    top:0;
    right:0;
    bottom:0;
    width:min(86vw,370px);
    background:var(--paper);
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:96px 24px 40px;
    transform:translateX(102%);
    transition:transform .32s var(--ease);
    box-shadow:-24px 0 48px -30px rgba(8,41,42,.4);
    z-index:88;
    overflow-y:auto;
  }
  .nav-links.is-open{transform:none;}
  .nav-links a{
    height:auto;
    padding:20px 4px;
    border-radius:0;
    border-bottom:1px solid var(--line);
    font-size:19px;
    font-weight:500;
    color:var(--ink);
  }
  .nav-links a::after{display:none;}
  .nav-links a.is-active{background:transparent;font-weight:700;}
  .nav-links a.is-active::before{
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    border-radius:50%;
    background:var(--orange);
    margin-right:10px;
    vertical-align:middle;
  }
  .nav-toggle{display:inline-flex;}
  .nav-side .btn-primary{display:none;}
  .steps{grid-template-columns:1fr;}
  .step{border-right:0;border-bottom:1px solid rgba(251,249,245,.14);padding:30px 0;}
  .step:last-child{border-bottom:0;}
  .scene-body{padding-left:14px;margin-top:34px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
}
@media (max-width:767px){
  body{font-size:16px;}
  .section{padding:64px 0;}
  .section-head{margin-bottom:38px;}
  .page-head h1{font-size:clamp(28px,7vw,36px);}
  .timeline{padding-left:30px;}
  .tl-dot{left:-30px;top:28px;width:13px;height:13px;}
  .tl-item{padding:18px 0;}
  .tl-title{font-size:17px;}
  .acc-head{font-size:16px;padding:20px 0;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;}
  .brand-text{font-size:17px;}
}
@media (max-width:519px){
  .wrap{padding:0 18px;}
  .anchor-bar a{height:36px;padding:0 13px;font-size:13px;}
  .btn{width:100%;}
  .btn-sm{width:auto;}
  .cta-inner .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  *{transition-duration:.01ms !important;}
}

/* roulang page: category4 */
:root{
  --ink:#0E3B3C;
  --ink-deep:#08292A;
  --accent:#FF6A3D;
  --paper:#F7F5F0;
  --mist:#ECE9E2;
  --paper-light:#FBF9F5;
  --text:#12161A;
  --text-2:#5A625F;
  --text-3:#8B918D;
  --line:rgba(14,59,60,.12);
  --line-soft:rgba(251,249,245,.18);
  --radius:8px;
  --radius-sm:6px;
  --pill:999px;
  --shadow-1:0 1px 2px rgba(14,59,60,.05);
  --shadow-2:0 14px 34px -18px rgba(14,59,60,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,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;
  background:var(--paper);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.9;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius);}
a{color:inherit;text-decoration:none;}
button,input,textarea,select{font-family:inherit;}
button{cursor:pointer;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{list-style:none;padding:0;}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px;}
.wrap{width:100%;max-width:1240px;margin:0 auto;padding:0 24px;}
@media (min-width:1440px){.wrap{max-width:1320px;}}

/* ---------- header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(247,245,240,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:background 240ms var(--ease),box-shadow 240ms var(--ease);
}
.site-header.is-scrolled{background:rgba(247,245,240,.96);box-shadow:0 1px 0 rgba(14,59,60,.06);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px;transition:height 240ms var(--ease);}
.site-header.is-scrolled .nav{height:60px;}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700;font-size:18px;letter-spacing:.01em;color:var(--ink);}
.brand-mark{
  width:34px;height:34px;flex:0 0 34px;border-radius:9px;
  background:var(--ink);color:var(--paper-light);
  display:inline-flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;line-height:1;
}
.brand-text{white-space:nowrap;}
.nav-links{display:flex;align-items:center;gap:4px;}
.nav-links a{
  position:relative;display:inline-flex;align-items:center;
  padding:8px 14px;border-radius:var(--pill);
  font-size:15px;color:var(--text-2);
  transition:color 240ms var(--ease),background 240ms var(--ease);
}
.nav-links a:hover{color:var(--ink);}
.nav-links a.is-active{color:var(--ink);font-weight:600;background:var(--mist);}
.nav-side{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:transparent;border-radius:var(--pill);color:var(--ink);
  align-items:center;justify-content:center;font-size:16px;
  transition:background 240ms var(--ease);
}
.nav-toggle:hover{background:var(--mist);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 26px;border-radius:var(--pill);
  font-size:15px;font-weight:600;line-height:1;border:1px solid transparent;
  transition:background 240ms var(--ease),color 240ms var(--ease),border-color 240ms var(--ease),transform 240ms var(--ease);
}
.btn-primary{background:var(--ink);color:var(--paper-light);}
.btn-primary:hover{background:var(--accent);color:var(--ink-deep);}
.btn-ghost{border-color:rgba(14,59,60,.28);color:var(--ink);background:transparent;}
.btn-ghost:hover{background:var(--mist);}
.btn-sm{height:40px;padding:0 20px;font-size:14px;}
.btn-link{
  display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--ink);
  border-bottom:1px solid rgba(14,59,60,.25);padding-bottom:2px;
  transition:color 240ms var(--ease),border-color 240ms var(--ease);
}
.btn-link i{transition:transform 240ms var(--ease);font-size:12px;}
.btn-link:hover{color:var(--accent);border-color:var(--accent);}
.btn-link:hover i{transform:translateX(4px);}

/* ---------- page head ---------- */
.page-head{padding:76px 0 0;}
.eyebrow{
  font-family:var(--font-num);font-size:12px;font-weight:700;
  letter-spacing:.18em;text-transform:uppercase;color:var(--accent);
  display:inline-flex;align-items:center;gap:10px;
}
.eyebrow::before{content:"";width:6px;height:6px;background:var(--accent);display:inline-block;}
.page-head h1{
  margin-top:18px;
  font-size:clamp(32px,4.2vw,52px);
  font-weight:800;line-height:1.12;letter-spacing:-.02em;color:var(--ink);
  max-width:840px;
}
.page-head .lead{
  margin-top:18px;font-size:17px;color:var(--text-2);max-width:720px;
}
.page-head .rule{margin-top:36px;height:1px;background:var(--line);}

/* ---------- sections ---------- */
.section{padding:96px 0;}
.section-tight{padding:72px 0;}
.section--mist{background:var(--mist);}
.section--dark{background:var(--ink);color:var(--paper-light);}
.section--dark .sec-title,.section--dark .stat-num{color:var(--paper-light);}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:44px;flex-wrap:wrap;}
.sec-title{
  position:relative;padding-left:18px;
  font-size:clamp(28px,3.4vw,44px);font-weight:700;line-height:1.2;letter-spacing:-.01em;color:var(--ink);
}
.sec-title::before{content:"";position:absolute;left:0;top:.36em;width:6px;height:6px;background:var(--accent);}
.sec-sub{margin-top:12px;color:var(--text-2);font-size:15px;max-width:620px;}
.section--dark .sec-sub{color:rgba(251,249,245,.72);}

/* ---------- grids ---------- */
.grid{display:grid;gap:28px;}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr));}

/* ---------- feature row (foundation grid) ---------- */
.feature-row{margin-left:-22px;margin-right:-22px;align-items:center;}
.feature-row > .column{padding-left:22px;padding-right:22px;}
.feature-media{position:relative;}
.feature-media .frame{
  position:relative;aspect-ratio:7/5;border-radius:var(--radius);overflow:hidden;background:var(--mist);
}
.feature-media img{width:100%;height:100%;object-fit:cover;border-radius:0;}
.float-card{
  position:absolute;right:16px;bottom:16px;
  background:var(--paper-light);border:1px solid var(--line);border-radius:var(--radius);
  padding:12px 16px;box-shadow:var(--shadow-2);font-size:13px;color:var(--text-2);
  display:flex;align-items:center;gap:10px;max-width:280px;
}
.float-card .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:0 0 8px;}
.feature-text h2{font-size:clamp(24px,2.6vw,34px);font-weight:700;line-height:1.25;color:var(--ink);}
.feature-text p{margin-top:18px;color:var(--text-2);}
.check-list{margin-top:24px;display:grid;gap:12px;}
.check-list li{display:flex;gap:12px;align-items:flex-start;font-size:15px;color:var(--text-2);}
.check-list i{color:var(--accent);margin-top:6px;font-size:12px;}
.feature-text .btn-link{margin-top:28px;}

/* ---------- cards ---------- */
.card{
  display:flex;flex-direction:column;
  background:var(--paper-light);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms var(--ease);
}
.card:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:rgba(255,106,61,.42);}
.card-media{aspect-ratio:16/9;overflow:hidden;background:var(--mist);}
.card-media img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform 240ms var(--ease);}
.card:hover .card-media img{transform:scale(1.03);}
.card-body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1;}
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  font-size:12px;letter-spacing:.04em;color:var(--ink);
  background:var(--mist);border:1px solid var(--line);border-radius:var(--pill);
}
.card:hover .badge{background:rgba(255,106,61,.12);border-color:rgba(255,106,61,.45);}
.card-title{margin-top:14px;font-size:19px;font-weight:600;line-height:1.45;color:var(--ink);}
.card-text{margin-top:10px;font-size:14px;line-height:1.75;color:var(--text-2);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.card-foot{
  margin-top:auto;padding-top:18px;display:flex;align-items:center;justify-content:space-between;
  font-size:13px;color:var(--text-3);font-family:var(--font-num);
}
.card-foot .go{color:var(--ink);font-family:var(--font-cn);font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.card-foot .go i{font-size:11px;transition:transform 240ms var(--ease);}
.card:hover .card-foot .go i{transform:translateX(4px);}

/* ---------- numbered rows ---------- */
.rows{border-top:1px solid var(--line);margin-top:44px;}
.row-item{
  display:grid;grid-template-columns:96px minmax(0,1fr) auto;gap:28px;align-items:center;
  padding:26px 10px;border-bottom:1px solid var(--line);
  transition:background 240ms var(--ease),transform 240ms var(--ease);
}
.row-item:hover{background:var(--mist);transform:translateX(6px);}
.row-num{font-family:var(--font-num);font-size:14px;font-weight:700;letter-spacing:.16em;color:var(--accent);}
.row-item h3{font-size:19px;font-weight:600;color:var(--ink);}
.row-item p{margin-top:6px;font-size:14px;color:var(--text-2);}
.row-item .arrow{color:var(--text-3);transition:color 240ms var(--ease),transform 240ms var(--ease);}
.row-item:hover .arrow{color:var(--accent);transform:translateX(4px);}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:20px;}
.stat{padding:12px 32px;border-left:1px solid var(--line-soft);}
.stat:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:clamp(38px,4vw,64px);font-weight:800;line-height:1;
  color:var(--paper-light);letter-spacing:-.02em;
}
.stat-num small{font-size:16px;font-weight:600;margin-left:6px;letter-spacing:0;color:rgba(251,249,245,.8);}
.stat-label{margin-top:14px;font-size:14px;color:rgba(251,249,245,.72);}

/* ---------- faq ---------- */
.faq{max-width:780px;margin-top:40px;border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;background:none;border:0;padding:24px 0;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  font-size:18px;font-weight:600;color:var(--ink);text-align:left;line-height:1.5;
}
.faq-q .ico{
  flex:0 0 26px;width:26px;height:26px;border:1px solid var(--line);border-radius:50%;
  display:inline-flex;align-items:center;justify-content:center;color:var(--ink);
  font-size:13px;transition:transform 240ms var(--ease),background 240ms var(--ease),color 240ms var(--ease);
}
.faq-item.open .faq-q .ico{transform:rotate(45deg);background:var(--accent);color:var(--paper-light);border-color:var(--accent);}
.faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease);}
.faq-item.open .faq-a{max-height:420px;}
.faq-a p{padding:0 0 24px;font-size:15px;line-height:1.9;color:var(--text-2);max-width:700px;}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:var(--paper-light);padding:64px 0;}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.35;max-width:620px;}
.cta-band p{margin-top:10px;font-size:14px;color:rgba(251,249,245,.72);}
.cta-band .btn-primary{background:var(--accent);color:var(--ink-deep);}
.cta-band .btn-primary:hover{background:var(--paper-light);color:var(--ink-deep);}

/* ---------- footer ---------- */
.site-footer{background:var(--ink-deep);color:rgba(251,249,245,.82);padding:64px 0 0;font-size:14px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:700;color:var(--paper-light);margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--accent);color:var(--ink-deep);}
.footer-grid p{line-height:1.85;font-size:14px;color:rgba(251,249,245,.68);max-width:340px;}
.footer-title{font-size:14px;font-weight:600;color:rgba(251,249,245,.55);letter-spacing:.06em;margin-bottom:16px;}
.footer-links li{margin-bottom:10px;}
.footer-links a,.footer-links span{color:rgba(251,249,245,.82);transition:color 240ms var(--ease);}
.footer-links a:hover{color:var(--accent);}
.footer-bottom{
  margin-top:48px;border-top:1px solid var(--line-soft);padding:22px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-size:13px;color:rgba(251,249,245,.55);
}

/* ---------- animation ---------- */
.js [data-anim]{opacity:0;transform:translateY(12px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
.js [data-anim].in{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important;}
  .js [data-anim]{opacity:1;transform:none;}
  html{scroll-behavior:auto;}
}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  .section{padding:80px 0;}
  .section-tight{padding:60px 0;}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    background:var(--paper-light);border-bottom:1px solid var(--line);
    flex-direction:column;align-items:stretch;gap:0;
    padding:8px 24px 24px;box-shadow:var(--shadow-2);
  }
  .nav-links.open{display:flex;}
  .nav-links a{font-size:19px;padding:18px 0;border-bottom:1px solid var(--line);border-radius:0;}
  .nav-links a.is-active{background:transparent;color:var(--accent);}
  .nav-toggle{display:inline-flex;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .stats{grid-template-columns:1fr 1fr;gap:28px 0;}
  .stat:nth-child(odd){border-left:0;padding-left:0;}
}
@media (max-width:767px){
  .wrap{padding:0 20px;}
  .section{padding:60px 0;}
  .section-tight{padding:52px 0;}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr;gap:20px;}
  .page-head{padding:52px 0 0;}
  .row-item{grid-template-columns:64px minmax(0,1fr) auto;gap:16px;padding:22px 6px;}
  .row-item p{display:none;}
  .cta-band{padding:52px 0;}
  .cta-band .btn{width:100%;}
  .cta-inner{gap:24px;}
}
@media (max-width:639px){
  .nav-side .btn{display:none;}
  .brand-text{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .stats{grid-template-columns:1fr;gap:0;}
  .stat{border-left:0;padding:20px 0;border-top:1px solid var(--line-soft);}
  .stat:first-child{border-top:0;padding-top:0;}
  .float-card{position:static;margin-top:14px;max-width:none;}
  .faq-q{font-size:16px;}
}