/* roulang page: index */
:root{
  --ink:#14100E;
  --ink-2:#2A2422;
  --paper:#F7F3EC;
  --surface:#FFFDF9;
  --cinnabar:#B3272D;
  --cinnabar-deep:#8C1C22;
  --jade:#2F4F4A;
  --gold:#B08A4F;
  --line:#E4DCD0;
  --muted:#6E655C;
  --ok:#3E7A5E;
  --radius-card:10px;
  --radius-btn:4px;
  --radius-img:8px;
  --shadow-hover:0 16px 32px rgba(20,16,14,.08);
  --shadow-float:0 8px 40px rgba(20,16,14,.12);
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --mono:"JetBrains Mono","SFMono-Regular",Consolas,monospace;
  --sec-space:120px;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;border-radius:var(--radius-img);}
a{color:var(--ink);text-decoration:none;transition:color .25s ease;}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px;}
h1,h2,h3,h4{font-family:var(--serif);color:var(--ink);font-weight:600;margin:0;letter-spacing:.02em;}
p{margin:0 0 20px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:var(--sans);cursor:pointer;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.container-wide{max-width:1280px;}
.section{padding:var(--sec-space) 0;}
.section-tight{padding:72px 0;}
.rule{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- eyebrow ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:14px;color:var(--muted);letter-spacing:.04em;margin-bottom:22px;
}
.eyebrow::before{content:"";width:32px;height:1px;background:var(--cinnabar);flex:none;}
.eyebrow b{font-family:var(--mono);font-size:12px;font-weight:500;color:var(--gold);letter-spacing:.12em;}
.eyebrow-light{color:rgba(247,243,236,.72);}
.eyebrow-light::before{background:var(--cinnabar);}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  height:72px;background:rgba(247,243,236,.94);
  border-bottom:1px solid var(--line);
  transition:height .3s ease,background .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  height:56px;background:rgba(247,243,236,.92);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.nav-inner{
  height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:inline-flex;align-items:center;gap:10px;font-family:var(--serif);font-size:19px;font-weight:600;color:var(--ink);letter-spacing:.04em;}
.brand .seal{
  width:9px;height:9px;border-radius:2px;background:var(--cinnabar);flex:none;
  box-shadow:0 0 0 3px rgba(179,39,45,.10);
}
.nav-links{display:none;align-items:center;gap:34px;}
.nav-links a{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--ink-2);padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--cinnabar);
  transition:width .25s cubic-bezier(.22,.61,.36,1);
}
.nav-links a:hover{color:var(--cinnabar);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--cinnabar);}
.nav-links a.active::after{width:100%;}
.nav-right{display:flex;align-items:center;gap:18px;}
.nav-text{display:none;font-size:15px;color:var(--muted);}
.nav-text:hover{color:var(--cinnabar);}
.btn-outline-line{
  display:none;align-items:center;height:38px;padding:0 20px;font-size:14px;
  border:1px solid var(--ink);border-radius:var(--radius-btn);color:var(--ink);letter-spacing:.04em;
  transition:all .25s ease;background:transparent;
}
.btn-outline-line:hover{border-color:var(--cinnabar);color:var(--cinnabar);}
.burger{
  width:44px;height:44px;display:flex;flex-direction:column;justify-content:center;gap:6px;
  background:none;border:0;padding:0 10px;
}
.burger span{display:block;height:1px;background:var(--ink);transition:transform .3s ease,opacity .3s ease;}
.burger.is-open span:nth-child(1){transform:translateY(3.5px) rotate(45deg);}
.burger.is-open span:nth-child(2){transform:translateY(-3.5px) rotate(-45deg);}
.drawer{
  position:fixed;inset:72px 0 0 0;background:var(--paper);z-index:55;
  transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .3s ease,transform .3s ease;
  padding:32px 24px 48px;overflow-y:auto;
}
.drawer.is-open{opacity:1;transform:translateY(0);pointer-events:auto;}
.drawer a.drawer-link{
  display:block;font-family:var(--serif);font-size:28px;color:var(--ink);
  padding:20px 0;border-bottom:1px solid var(--line);
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{color:var(--cinnabar);}
.drawer .drawer-cta{
  display:inline-flex;margin-top:34px;align-items:center;justify-content:center;
  width:100%;height:52px;background:var(--cinnabar);color:#FFFDF9;border-radius:var(--radius-btn);
  font-size:16px;letter-spacing:.04em;
}
@media screen and (min-width:1024px){
  .nav-links{display:flex;}
  .nav-text{display:inline-flex;}
  .btn-outline-line{display:inline-flex;}
  .burger{display:none;}
  .drawer{display:none;}
}

/* ---------- hero ---------- */
.hero{
  position:relative;min-height:78vh;display:flex;align-items:center;
  padding:150px 0 88px;overflow:hidden;background:var(--ink);
}
.hero-media{position:absolute;inset:0;z-index:0;}
.hero-media img{width:100%;height:100%;object-fit:cover;border-radius:0;filter:saturation(.92);transform:scale(1.04);transition:transform .8s ease;}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(0deg,rgba(20,16,14,.82) 0%,rgba(20,16,14,.45) 45%,rgba(20,16,14,.28) 100%);
}
.hero-inner{position:relative;z-index:2;}
.hero-copy{max-width:760px;}
.hero-copy .eyebrow{color:rgba(247,243,236,.78);}
.hero-copy .eyebrow b{color:var(--gold);}
.hero h1{
  color:#F7F3EC;font-size:clamp(34px,6vw,72px);line-height:1.12;letter-spacing:.02em;font-weight:500;
}
.hero-sub{
  margin-top:26px;max-width:620px;font-size:clamp(15px,1.4vw,17px);line-height:1.9;
  color:rgba(247,243,236,.82);
}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;margin-top:40px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:42px;}
.hero-tags li{
  font-size:12px;letter-spacing:.06em;color:rgba(247,243,236,.72);
  border:1px solid rgba(247,243,236,.28);border-radius:999px;padding:6px 14px;
}
@media screen and (max-width:767px){
  .hero{min-height:62vh;padding:120px 0 64px;}
  .hero-actions .btn{width:100%;justify-content:center;}
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;justify-content:center;
  font-size:15px;letter-spacing:.04em;border-radius:var(--radius-btn);
  padding:15px 32px;border:1px solid transparent;transition:all .25s ease;min-height:44px;
}
.btn-primary{background:var(--cinnabar);color:#FFFDF9;}
.btn-primary:hover{background:var(--cinnabar-deep);color:#FFFDF9;transform:translateY(-1px);}
.btn-ghost{background:transparent;border-color:rgba(247,243,236,.45);color:#F7F3EC;}
.btn-ghost:hover{border-color:var(--cinnabar);color:#FFFDF9;background:rgba(179,39,45,.22);}
.btn-ghost-dark{background:transparent;border-color:var(--ink);color:var(--ink);}
.btn-ghost-dark:hover{border-color:var(--cinnabar);color:var(--cinnabar);}
.btn-text{
  display:inline-flex;align-items:center;gap:8px;color:var(--cinnabar);font-size:15px;letter-spacing:.03em;
}
.btn-text i{transition:transform .25s ease;}
.btn-text:hover{color:var(--cinnabar-deep);}
.btn-text:hover i{transform:translateX(4px);}

/* ---------- section heads ---------- */
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:56px;}
.sec-head h2{font-size:clamp(26px,3.2vw,42px);line-height:1.3;}
.sec-lead{max-width:560px;color:var(--muted);font-size:16px;margin-top:16px;}

/* ---------- services (asymmetric) ---------- */
.services{padding:var(--sec-space) 0;}
.services-title{position:static;}
.services-title h2{font-size:clamp(26px,3.2vw,40px);line-height:1.3;margin-bottom:18px;}
.services-title p{color:var(--muted);font-size:15px;max-width:320px;}
.step-list{border-top:1px solid var(--line);}
.step{
  display:grid;grid-template-columns:1fr;gap:8px;
  padding:32px 0;border-bottom:1px solid var(--line);transition:background .3s ease;
}
.step-num{
  font-family:var(--mono);font-size:26px;color:var(--gold);letter-spacing:.08em;line-height:1;
}
.step h3{font-size:21px;margin-bottom:10px;}
.step p{color:var(--muted);font-size:15px;margin:0;max-width:640px;}
.step:hover .step-num{color:var(--cinnabar);}
@media screen and (min-width:1024px){
  .services-grid{display:grid;grid-template-columns:4fr 8fr;gap:64px;}
  .services-title{position:sticky;top:110px;align-self:start;}
  .step{grid-template-columns:90px 1fr;gap:24px;padding:38px 0;align-items:start;}
  .step h3{margin-top:-4px;}
  .step p{grid-column:2;}
}

/* ---------- benefit cards ---------- */
.benefits{padding:var(--sec-space) 0;background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.benefit-track{display:grid;grid-auto-flow:column;grid-auto-columns:76%;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px;margin:0 -24px;padding-left:24px;padding-right:24px;}
.benefit-track::-webkit-scrollbar{height:4px;}
.benefit-track::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;}
.benefit-card{
  scroll-snap-align:start;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:32px 26px;display:flex;flex-direction:column;gap:14px;transition:all .35s ease;min-height:260px;
}
.benefit-card:hover{border-color:rgba(179,39,45,.4);transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.benefit-value{font-family:var(--mono);font-size:40px;line-height:1;color:var(--ink);letter-spacing:.02em;}
.benefit-value span{font-size:15px;font-family:var(--sans);color:var(--muted);margin-left:6px;letter-spacing:0;}
.benefit-card h3{font-size:18px;}
.benefit-card p{font-size:14px;color:var(--muted);margin:0;}
@media screen and (min-width:1024px){
  .benefit-track{grid-auto-flow:row;grid-template-columns:repeat(4,1fr);overflow:visible;margin:0;padding:0;}
}

/* ---------- timeline nodes ---------- */
.flow{padding:var(--sec-space) 0;}
.flow-line{position:relative;margin-top:8px;}
.flow-line::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:1px;background:var(--line);}
.flow-node{position:relative;padding:0 0 40px 34px;}
.flow-node:last-child{padding-bottom:0;}
.flow-dot{
  position:absolute;left:0;top:6px;width:11px;height:11px;border-radius:50%;
  background:var(--paper);border:1px solid var(--line);
}
.flow-node.is-done .flow-dot{background:var(--cinnabar);border-color:var(--cinnabar);}
.flow-node h3{font-size:19px;margin-bottom:8px;}
.flow-node p{font-size:14px;color:var(--muted);margin:0;max-width:520px;}
.flow-node .node-tag{font-family:var(--mono);font-size:12px;color:var(--gold);letter-spacing:.1em;display:block;margin-bottom:8px;}
@media screen and (min-width:1024px){
  .flow-line{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;}
  .flow-line::before{left:0;right:0;top:5px;bottom:auto;width:auto;height:1px;}
  .flow-node{padding:34px 24px 0 0;}
  .flow-dot{top:0;left:0;}
}

/* ---------- stats ---------- */
.stats{padding:0 0 var(--sec-space);}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:32px 24px;border-top:1px solid var(--line);padding-top:52px;}
.stat-num{font-family:var(--serif);font-size:40px;line-height:1.1;color:var(--ink);letter-spacing:.02em;}
.stat-num small{font-family:var(--sans);font-size:14px;color:var(--muted);margin-left:6px;letter-spacing:0;}
.stat-label{font-size:13px;color:var(--muted);margin-top:10px;}
@media screen and (min-width:768px){.stats-grid{grid-template-columns:repeat(4,1fr);}}
@media screen and (min-width:1024px){.stat-num{font-size:48px;}}

/* ---------- posts ---------- */
.posts{padding:var(--sec-space) 0;background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.post-grid{display:grid;grid-template-columns:1fr;gap:28px;}
.post-card{
  display:flex;flex-direction:column;background:var(--paper);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;height:100%;
  transition:all .35s ease;
}
.post-card:hover{border-color:rgba(179,39,45,.35);transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.post-cover{aspect-ratio:16/10;overflow:hidden;background:var(--line);border-radius:0;}
.post-cover img{width:100%;height:100%;object-fit:cover;border-radius:0;transition:transform .5s ease;}
.post-card:hover .post-cover img{transform:scale(1.03);}
.post-body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1;}
.tag{
  display:inline-flex;align-items:center;align-self:flex-start;
  font-size:12px;letter-spacing:.04em;color:var(--cinnabar);
  background:rgba(179,39,45,.08);border-radius:999px;padding:4px 12px;
}
.tag-jade{color:var(--jade);background:rgba(47,79,74,.08);}
.post-title{
  font-size:18px;line-height:1.5;font-weight:600;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card:hover .post-title{color:var(--cinnabar);}
.post-summary{
  font-size:14px;color:var(--muted);margin:0;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{
  margin-top:auto;padding-top:14px;border-top:1px solid var(--line);
  font-size:13px;color:var(--muted);display:flex;align-items:center;gap:14px;
}
.post-meta .sep{width:1px;height:12px;background:var(--line);display:inline-block;}
.empty-state{
  border:1px dashed var(--line);border-radius:var(--radius-card);min-height:160px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  color:var(--muted);text-align:center;padding:32px 20px;
}
.empty-state i{font-size:26px;color:var(--line);}
.empty-state p{font-size:16px;margin:0;}
@media screen and (min-width:640px){.post-grid{grid-template-columns:repeat(2,1fr);}}
@media screen and (min-width:1024px){.post-grid{grid-template-columns:repeat(3,1fr);gap:32px;}}

/* ---------- faq ---------- */
.faq{padding:var(--sec-space) 0;}
.faq-grid{display:grid;grid-template-columns:1fr;gap:48px;}
@media screen and (min-width:1024px){.faq-grid{grid-template-columns:4fr 8fr;gap:80px;}}
.accordion{background:transparent;margin:0;border-top:1px solid var(--line);}
.accordion .accordion-item{border-bottom:1px solid var(--line);background:transparent;}
.accordion .accordion-title{
  position:relative;display:block;padding:24px 48px 24px 0;background:transparent;border:0;
  font-size:17px;font-family:var(--sans);font-weight:500;color:var(--ink);line-height:1.6;
  transition:color .25s ease;
}
.accordion .accordion-title::before{display:none !important;}
.accordion .accordion-title::after{
  content:"";position:absolute;right:8px;top:50%;width:14px;height:14px;transform:translateY(-50%);
  background-image:linear-gradient(var(--cinnabar),var(--cinnabar)),linear-gradient(var(--cinnabar),var(--cinnabar));
  background-size:14px 1px,1px 14px;background-position:center;background-repeat:no-repeat;
  transition:transform .3s cubic-bezier(.22,.61,.36,1);
}
.accordion .accordion-item.is-active .accordion-title::after{transform:translateY(-50%) rotate(45deg);}
.accordion .accordion-title:hover{color:var(--cinnabar);}
.accordion .accordion-content{
  padding:0 48px 26px 0;border:0;background:transparent;
  font-size:15px;line-height:1.85;color:var(--muted);
}
.faq-aside p{color:var(--muted);font-size:15px;}
.faq-aside h2{font-size:clamp(26px,3.2vw,40px);line-height:1.3;margin-bottom:20px;}
.faq-aside .contact-line{font-size:14px;color:var(--muted);margin-top:24px;display:block;}

/* ---------- cta ---------- */
.cta{background:var(--ink);color:#F7F3EC;padding:96px 0;}
.cta-grid{display:grid;grid-template-columns:1fr;gap:56px;}
@media screen and (min-width:1024px){.cta-grid{grid-template-columns:5fr 7fr;gap:80px;align-items:start;}}
.cta h2{color:#F7F3EC;font-size:clamp(28px,3.6vw,46px);line-height:1.28;}
.cta p.cta-sub{color:rgba(247,243,236,.72);font-size:16px;margin-top:22px;max-width:440px;}
.cta-note{font-size:13px;color:rgba(247,243,236,.55);margin-top:26px;}
.form-row{margin-bottom:26px;}
.form-row label{display:block;font-size:13px;color:rgba(247,243,236,.66);letter-spacing:.04em;margin-bottom:8px;}
.form-row input,.form-row textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(247,243,236,.28);
  color:#F7F3EC;font-size:16px;font-family:var(--sans);padding:12px 0;border-radius:0;
  transition:border-color .25s ease;
}
.form-row input::placeholder,.form-row textarea::placeholder{color:rgba(247,243,236,.35);}
.form-row input:focus,.form-row textarea:focus{outline:none;border-bottom-color:var(--cinnabar);box-shadow:0 1px 0 var(--cinnabar);}
.form-row textarea{resize:vertical;min-height:88px;}
.form-err{display:none;font-size:12px;color:#E8888C;margin-top:6px;}
.form-row.has-error .form-err{display:block;}
.form-row.has-error input,.form-row.has-error textarea{border-bottom-color:var(--cinnabar);}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin-top:8px;}
.form-foot span{font-size:13px;color:rgba(247,243,236,.5);}
.form-ok{display:none;font-size:14px;color:#8FCBA6;margin-top:18px;}
.form-ok.is-visible{display:block;}

/* ---------- footer ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--ink);padding:80px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:40px;}
@media screen and (min-width:640px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media screen and (min-width:1024px){.footer-grid{grid-template-columns:4fr 2.5fr 2.5fr 3fr;gap:48px;}}
.footer-brand .brand{margin-bottom:18px;}
.footer-brand p{font-size:14px;color:var(--muted);max-width:320px;}
.footer-col h4{font-size:14px;color:var(--ink);letter-spacing:.06em;margin-bottom:20px;font-family:var(--sans);font-weight:500;}
.footer-col ul li{margin-bottom:12px;}
.footer-col ul li a{font-size:14px;color:var(--muted);}
.footer-col ul li a:hover{color:var(--cinnabar);}
.footer-col .contact-item{font-size:14px;color:var(--muted);margin-bottom:12px;}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:12px;color:var(--muted);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1);}
.reveal.is-visible{opacity:1;transform:none;}

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

/* roulang page: article */
:root{
  --ink:#14100E;
  --ink-2:#2A2422;
  --paper:#F7F3EC;
  --surface:#FFFDF9;
  --cinnabar:#B3272D;
  --cinnabar-deep:#8C1C22;
  --jade:#2F4F4A;
  --gold:#B08A4F;
  --line:#E4DCD0;
  --muted:#6E655C;
  --ok:#3E7A5E;
  --radius-card:10px;
  --radius-btn:4px;
  --radius-img:8px;
  --shadow-hover:0 16px 32px rgba(20,16,14,.08);
  --shadow-drawer:0 8px 40px rgba(20,16,14,.12);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --font-sans:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",Helvetica,Arial,sans-serif;
  --font-num:"Inter","JetBrains Mono","SFMono-Regular",Menlo,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.01em;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color .25s ease}
a:hover{color:var(--cinnabar)}
a:focus-visible,button:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px}
button{font:inherit;cursor:pointer;background:none;border:0;color:inherit}
h1,h2,h3,h4,h5{margin:0;font-family:var(--font-serif);color:var(--ink);font-weight:600;line-height:1.3;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
figure{margin:0}
hr{border:0;border-top:1px solid var(--line);margin:0}
.grid-container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media screen and (min-width:1024px){
  .grid-container{padding-left:40px;padding-right:40px}
}
.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media screen and (min-width:1024px){
  .container{padding-left:40px;padding-right:40px}
}

/* ============ header ============ */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  height:72px;
  background:rgba(247,243,236,.94);
  border-bottom:1px solid var(--line);
  transition:height .3s ease,background .3s ease,backdrop-filter .3s ease;
}
.site-header.is-scrolled{
  height:56px;
  background:rgba(247,243,236,.90);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
}
.nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-size:20px;font-weight:600;color:var(--ink);
  letter-spacing:.06em;white-space:nowrap;
}
.brand:hover{color:var(--ink)}
.seal{
  width:8px;height:8px;background:var(--cinnabar);border-radius:1px;
  display:inline-block;flex:0 0 auto;
}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-2);letter-spacing:.02em;padding:6px 0;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--cinnabar);transform:scaleX(0);transform-origin:left center;
  transition:transform .25s cubic-bezier(.22,.61,.36,1);
}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a:hover,.nav-links a.active{color:var(--cinnabar)}
.nav-right{display:flex;align-items:center;gap:20px}
.nav-text{font-size:15px;color:var(--ink-2)}
.nav-text:hover{color:var(--cinnabar)}
.btn-outline-line{
  display:inline-block;font-size:14px;line-height:1;padding:12px 20px;
  border:1px solid var(--ink);border-radius:var(--radius-btn);color:var(--ink);
  letter-spacing:.04em;transition:border-color .25s,color .25s,transform .25s;
}
.btn-outline-line:hover{border-color:var(--cinnabar);color:var(--cinnabar);transform:translateY(-1px)}
.burger{
  display:none;width:44px;height:44px;padding:0;flex-direction:column;
  align-items:center;justify-content:center;gap:7px;
}
.burger span{display:block;width:22px;height:1px;background:var(--ink);transition:transform .25s,opacity .25s}
.burger.is-open span:first-child{transform:translateY(4px) rotate(45deg)}
.burger.is-open span:last-child{transform:translateY(-4px) rotate(-45deg)}
.mobile-drawer{
  position:fixed;inset:56px 0 0 0;z-index:70;background:var(--paper);
  padding:40px 24px 48px;display:none;flex-direction:column;gap:0;
  box-shadow:var(--shadow-drawer);overflow-y:auto;
}
.mobile-drawer.is-open{display:flex}
.mobile-drawer a{
  font-family:var(--font-serif);font-size:28px;color:var(--ink);
  padding:18px 0;border-bottom:1px solid var(--line);
}
.mobile-drawer a.btn-primary{
  font-family:var(--font-sans);font-size:16px;margin-top:32px;
  border-bottom:0;text-align:center;
}
@media screen and (max-width:767px){
  .nav-links{display:none}
  .nav-text{display:none}
  .btn-outline-line{display:none}
  .burger{display:flex}
}

/* ============ buttons & tags ============ */
.btn-primary{
  display:inline-block;background:var(--cinnabar);color:#FFFDF9;
  font-size:15px;letter-spacing:.04em;padding:15px 32px;border-radius:var(--radius-btn);
  border:1px solid var(--cinnabar);transition:background .25s,transform .25s,border-color .25s;
}
.btn-primary:hover{background:var(--cinnabar-deep);border-color:var(--cinnabar-deep);color:#FFFDF9;transform:translateY(-1px)}
.btn-ghost{
  display:inline-block;background:transparent;color:var(--ink);
  font-size:15px;letter-spacing:.04em;padding:15px 32px;border-radius:var(--radius-btn);
  border:1px solid var(--ink);transition:border-color .25s,color .25s,transform .25s;
}
.btn-ghost:hover{border-color:var(--cinnabar);color:var(--cinnabar);transform:translateY(-1px)}
.btn-text{
  display:inline-flex;align-items:center;gap:6px;color:var(--cinnabar);font-size:15px;
}
.btn-text i{transition:transform .25s ease}
.btn-text:hover{color:var(--cinnabar-deep)}
.btn-text:hover i{transform:translateX(4px)}
.btn-text.back:hover i{transform:translateX(-4px)}
.badge{
  display:inline-block;padding:5px 14px;border-radius:999px;
  background:rgba(179,39,45,.08);color:var(--cinnabar);font-size:12px;letter-spacing:.04em;
}
.badge-jade{
  display:inline-block;padding:5px 14px;border-radius:999px;
  border:1px solid rgba(47,79,74,.35);color:var(--jade);font-size:12px;letter-spacing:.04em;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-size:14px;color:var(--muted);letter-spacing:.06em;margin-bottom:20px;
}
.eyebrow::before{content:"";width:32px;height:1px;background:var(--cinnabar)}

/* ============ article layout ============ */
main{padding-top:72px}
.article-wrap{padding:56px 0 96px}
@media screen and (max-width:767px){
  .article-wrap{padding:32px 0 64px}
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;color:var(--muted);margin-bottom:32px;
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--cinnabar)}
.breadcrumb .sep{color:var(--line)}
.breadcrumb .current{color:var(--ink);max-width:360px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-head{max-width:860px;margin:0 auto 40px;text-align:left}
.article-head h1{
  font-size:clamp(24px,3.4vw,40px);line-height:1.4;margin:18px 0 22px;font-weight:600;
}
.meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  font-size:13px;color:var(--muted);
}
.meta .vline{width:1px;height:12px;background:var(--line);display:inline-block}
.meta em{font-style:normal;font-family:var(--font-num);color:var(--ink)}
.article-cover{
  max-width:980px;margin:0 auto 56px;border-radius:var(--radius-card);overflow:hidden;
  border:1px solid var(--line);background:var(--surface);
}
.article-cover img{
  width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;
  filter:saturation(.94);
}

/* ============ article body ============ */
.article-body{
  max-width:760px;margin:0 auto;
  font-size:17px;line-height:1.9;color:var(--ink-2);
}
@media screen and (max-width:767px){
  .article-body{font-size:16px;line-height:1.85}
}
.article-body p{margin:0 0 20px}
.article-body h2{
  position:relative;font-size:24px;line-height:1.4;margin:56px 0 16px;padding-top:0;
}
.article-body h2::before{
  content:"";display:block;width:32px;height:1px;background:var(--cinnabar);margin-bottom:16px;
}
.article-body h3{font-size:19px;margin:40px 0 14px;color:var(--ink)}
.article-body h4{font-size:17px;margin:32px 0 12px;color:var(--ink)}
.article-body ul,.article-body ol{margin:0 0 22px;padding-left:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.72em;width:6px;height:6px;background:var(--cinnabar);
}
.article-body ol{counter-reset:artlist}
.article-body ol li{position:relative;padding-left:26px;margin-bottom:10px;counter-increment:artlist}
.article-body ol li::before{
  content:counter(artlist);position:absolute;left:0;top:0;
  font-family:var(--font-num);font-size:13px;color:var(--cinnabar);font-weight:600;
}
.article-body blockquote{
  margin:28px 0;padding:24px;border-left:2px solid var(--cinnabar);
  background:rgba(255,253,249,.7);border-radius:0 var(--radius-img) var(--radius-img) 0;
  color:var(--ink);font-family:var(--font-serif);font-size:17px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:var(--radius-img);margin:28px 0;width:auto;max-width:100%;height:auto}
.article-body figure{margin:28px 0}
.article-body figcaption,.article-body .caption{
  font-size:13px;color:var(--muted);text-align:center;margin-top:10px;
}
.article-body a{color:var(--cinnabar);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
.article-body a:hover{color:var(--cinnabar-deep)}
.article-body strong{color:var(--ink);font-weight:600}
.article-body table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.article-body th,.article-body td{border-bottom:1px solid var(--line);padding:12px 10px;text-align:left}
.article-body th{font-family:var(--font-serif);color:var(--ink)}
.article-body hr{margin:40px 0}

/* ============ tags ============ */
.article-tags{
  max-width:760px;margin:56px auto 0;padding-top:28px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
}
.article-tags .label{font-size:13px;color:var(--muted);margin-right:6px}
.article-tags a{
  display:inline-block;padding:6px 16px;border-radius:999px;font-size:13px;
  border:1px solid var(--line);color:var(--ink-2);background:var(--surface);
  transition:border-color .25s,color .25s;
}
.article-tags a:hover{border-color:var(--cinnabar);color:var(--cinnabar)}
.article-back{max-width:760px;margin:32px auto 0}
.article-back a{font-size:15px;color:var(--muted)}
.article-back a:hover{color:var(--cinnabar)}

/* ============ empty state ============ */
.empty-state{
  max-width:760px;margin:0 auto;border:1px dashed var(--line);border-radius:var(--radius-card);
  padding:64px 32px;text-align:center;background:rgba(255,253,249,.6);
}
.empty-state i{font-size:32px;color:var(--line);display:block;margin-bottom:16px}
.empty-state p{font-size:16px;color:var(--muted);margin-bottom:20px}

/* ============ related ============ */
.related{padding:96px 0;border-top:1px solid var(--line);background:var(--paper)}
@media screen and (max-width:767px){
  .related{padding:64px 0}
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px}
.section-head h2{font-size:clamp(26px,3vw,38px);line-height:1.3}
.section-head .sub{font-size:14px;color:var(--muted);margin-top:10px}
.card{
  display:flex;flex-direction:column;height:100%;background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
  transition:transform .4s ease,box-shadow .4s ease,border-color .4s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(179,39,45,.18)}
.card .thumb{overflow:hidden;background:var(--paper)}
.card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .4s ease}
.card:hover .thumb img{transform:scale(1.03)}
.card .body{padding:24px;display:flex;flex-direction:column;gap:12px;flex:1 1 auto}
.card .body h3{font-size:18px;line-height:1.5;transition:color .3s ease}
.card:hover .body h3{color:var(--cinnabar)}
.card .body p{font-size:14px;color:var(--muted);line-height:1.8}
.card .foot{
  display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);
  margin-top:auto;padding-top:6px;
}
.card .foot .vline{width:1px;height:11px;background:var(--line)}

/* ============ cta ============ */
.cta-band{
  background:var(--ink);color:#F2EDE5;padding:96px 0;
}
@media screen and (max-width:767px){
  .cta-band{padding:64px 0}
}
.cta-band h2{
  color:#FBF7F0;font-size:clamp(28px,4vw,44px);line-height:1.25;max-width:760px;
}
.cta-band p{color:rgba(247,243,236,.72);font-size:16px;margin:20px 0 36px;max-width:620px}
.cta-row{display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.cta-note{font-size:13px;color:rgba(247,243,236,.6)}

/* ============ footer ============ */
.site-footer{background:var(--paper);border-top:1px solid var(--ink);padding:72px 0 0}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:56px;
}
@media screen and (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:599px){
  .footer-grid{grid-template-columns:1fr}
}
.footer-brand p{font-size:14px;color:var(--muted);line-height:1.9;margin-top:18px;max-width:360px}
.footer-col h4{font-size:15px;margin-bottom:18px;color:var(--ink)}
.footer-col ul li{margin-bottom:12px}
.footer-col ul a{font-size:14px;color:var(--muted)}
.footer-col ul a:hover{color:var(--cinnabar)}
.contact-item{font-size:14px;color:var(--muted);margin-bottom:12px;display:flex;align-items:center;gap:10px}
.contact-item i{color:var(--gold);font-size:14px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;display:flex;flex-wrap:wrap;
  align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted);
}

/* ============ motion ============ */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category1 */
:root{
  --ink:#14100E;
  --ink-2:#2A2422;
  --paper:#F7F3EC;
  --surface:#FFFDF9;
  --cinnabar:#B3272D;
  --cinnabar-deep:#8C1C22;
  --jade:#2F4F4A;
  --gold:#B08A4F;
  --line:#E4DCD0;
  --muted:#6E655C;
  --ok:#3E7A5E;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"PingFang SC","Noto Sans SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
  --mono:"Inter","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --r-card:10px;
  --r-btn:4px;
  --r-img:8px;
  --shadow-hover:0 16px 32px rgba(20,16,14,.08);
  --shadow-panel:0 8px 40px rgba(20,16,14,.12);
  --section-y:110px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:var(--sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .25s ease}
h1,h2,h3,h4{margin:0;font-family:var(--serif);color:var(--ink);font-weight:500;letter-spacing:.02em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input,textarea{font-family:inherit;font-size:inherit;color:inherit}
button{cursor:pointer;border:0;background:none;padding:0}
textarea{resize:vertical}
:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--paper);padding:10px 18px;z-index:200}
.skip-link:focus{left:12px;top:12px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 40px}
.section{padding:var(--section-y) 0}
.section-head{max-width:720px;margin-bottom:56px}
.section-head h2{font-size:clamp(28px,3.2vw,42px);line-height:1.3;margin-top:18px}
.section-lead{font-size:16px;line-height:1.9;color:var(--muted);margin-top:20px;max-width:660px}

.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:13px;letter-spacing:.08em;color:var(--muted);font-family:var(--mono)}
.eyebrow i{display:inline-block;width:26px;height:1px;background:var(--cinnabar)}

/* ---------- header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  height:72px;
  background:rgba(247,243,236,.92);
  border-bottom:1px solid var(--line);
  transition:height .3s ease,background .3s ease;
}
.site-header.is-scrolled{
  height:56px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  background:rgba(247,243,236,.92);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--serif);font-size:20px;letter-spacing:.04em;color:var(--ink);
  white-space:nowrap;
}
.brand .seal{width:9px;height:9px;border-radius:2px;background:var(--cinnabar);display:inline-block;flex:none}
.site-footer .brand{font-size:19px}
.nav-links{display:flex;align-items:center;gap:40px}
.nav-links a{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--ink-2);
  padding:6px 0;transition:color .25s ease;
}
.nav-links a::after{
  content:'';position:absolute;left:0;bottom:0;height:1px;width:0;
  background:var(--cinnabar);transition:width .25s ease;
}
.nav-links a:hover{color:var(--cinnabar)}
.nav-links a:hover::after{width:100%}
.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{width:100%}
.nav-right{display:flex;align-items:center;gap:24px}
.nav-text{font-size:15px;color:var(--ink-2);position:relative;padding:4px 0}
.nav-text::after{content:'';position:absolute;left:0;bottom:0;height:1px;width:0;background:var(--cinnabar);transition:width .25s ease}
.nav-text:hover{color:var(--cinnabar)}
.nav-text:hover::after{width:100%}
.btn-outline-line{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:14px;letter-spacing:.04em;color:var(--ink);
  padding:9px 20px;border:1px solid var(--ink);border-radius:var(--r-btn);
  transition:all .25s ease;
}
.btn-outline-line:hover{border-color:var(--cinnabar);color:var(--cinnabar)}
.burger{display:none;width:44px;height:44px;position:relative;padding:0}
.burger span{
  position:absolute;left:50%;width:24px;height:1px;background:var(--ink);
  transform:translateX(-50%);transition:transform .3s ease,top .3s ease;
}
.burger span:nth-child(1){top:18px}
.burger span:nth-child(2){top:25px}
.burger.is-open span:nth-child(1){top:21px;transform:translateX(-50%) rotate(45deg)}
.burger.is-open span:nth-child(2){top:21px;transform:translateX(-50%) rotate(-45deg)}

.mobile-drawer{
  position:fixed;inset:0;z-index:80;background:var(--paper);
  padding:112px 32px 40px;
  display:flex;flex-direction:column;justify-content:space-between;
  transform:translateY(-100%);
  transition:transform .4s cubic-bezier(.22,.61,.36,1);
}
.mobile-drawer.is-open{transform:translateY(0)}
.drawer-nav{display:flex;flex-direction:column}
.drawer-nav a{
  font-family:var(--serif);font-size:28px;color:var(--ink);
  padding:20px 0;border-bottom:1px solid var(--line);
}
.drawer-nav a.active{color:var(--cinnabar)}
.drawer-foot{margin-top:32px}
.drawer-foot .btn{width:100%}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  font-size:15px;letter-spacing:.04em;
  padding:15px 32px;border-radius:var(--r-btn);
  transition:background .25s ease,color .25s ease,transform .25s ease,border-color .25s ease;
  text-align:center;
}
.btn-primary{background:var(--cinnabar);color:var(--surface)}
.btn-primary:hover{background:var(--cinnabar-deep);color:var(--surface);transform:translateY(-1px)}
.btn-ghost{background:transparent;border:1px solid rgba(247,243,236,.5);color:var(--paper)}
.btn-ghost:hover{border-color:var(--cinnabar);color:var(--cinnabar)}
.text-link{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--cinnabar)}
.text-link::after{content:'→';display:inline-block;transition:transform .25s ease}
.text-link:hover::after{transform:translateX(4px)}

/* ---------- banner ---------- */
.page-banner{
  position:relative;margin-top:72px;min-height:340px;
  display:flex;align-items:flex-end;
  background-image:url(/assets/images/backpic/back-2.png);
  background-size:cover;background-position:center;
  overflow:hidden;
}
.page-banner::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to top,rgba(20,16,14,.82) 0%,rgba(20,16,14,.42) 52%,rgba(20,16,14,.26) 100%);
}
.banner-inner{position:relative;z-index:2;padding-top:96px;padding-bottom:48px}
.banner-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:13px;letter-spacing:.16em;color:#D9B584;font-family:var(--mono);margin-bottom:18px;
}
.banner-eyebrow i{display:inline-block;width:26px;height:1px;background:#D9B584}
.page-banner h1{
  color:var(--surface);
  font-size:clamp(34px,4.6vw,58px);
  line-height:1.14;letter-spacing:.03em;
}
.banner-sub{
  color:rgba(247,243,236,.78);
  font-size:16px;line-height:1.85;max-width:640px;margin-top:18px;
}
.breadcrumb-wrap{padding:20px 0;border-bottom:1px solid var(--line)}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted)}
.crumb a:hover{color:var(--cinnabar)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--ink)}

/* ---------- intro split ---------- */
.split{display:grid;grid-template-columns:minmax(240px,330px) 1fr;gap:80px;align-items:start}
.sticky-side{position:sticky;top:110px}
.sticky-side h2{font-size:clamp(24px,2.4vw,34px);line-height:1.35;margin-top:18px}
.prose-blocks p{
  font-size:17px;line-height:1.9;color:var(--ink-2);
  padding:28px 0;border-top:1px solid var(--line);
}
.prose-blocks p:first-child{border-top:0;padding-top:0}

/* ---------- module rows ---------- */
.module-row{
  display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center;
  padding:64px 0;border-top:1px solid var(--line);
}
.module-row.reverse .module-media{order:2}
.module-media{overflow:hidden;border-radius:var(--r-img)}
.module-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .5s ease}
.module-row:hover .module-media img{transform:scale(1.03)}
.module-index{
  display:block;font-family:var(--mono);font-size:13px;letter-spacing:.24em;
  color:var(--gold);margin-bottom:16px;
}
.module-body h3{font-size:clamp(22px,2.2vw,28px);line-height:1.35;margin-bottom:16px}
.module-body > p{font-size:16px;line-height:1.9;color:var(--ink-2)}
.dot-list{margin-top:24px}
.dot-list li{
  position:relative;padding-left:18px;font-size:15px;color:var(--muted);
  line-height:1.8;margin-bottom:10px;
}
.dot-list li::before{
  content:'';position:absolute;left:0;top:11px;width:6px;height:6px;background:var(--cinnabar);
}

/* ---------- timeline ---------- */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:16px}
.timeline::before{
  content:'';position:absolute;left:0;right:0;top:5px;height:1px;background:var(--line);
}
.timeline-item{position:relative;padding-top:38px}
.timeline-item .node{
  position:absolute;top:0;left:0;width:11px;height:11px;border-radius:50%;
  background:var(--paper);border:1px solid var(--cinnabar);
}
.timeline-item.done .node{background:var(--cinnabar)}
.timeline-item .tl-index{
  display:block;font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--gold);margin-bottom:12px;
}
.timeline-item h3{font-size:20px;margin-bottom:12px}
.timeline-item p{font-size:15px;line-height:1.85;color:var(--muted)}

/* ---------- faq ---------- */
.faq-wrap{max-width:900px}
.accordion{background:transparent;border:0;margin:0;padding:0;list-style:none}
.accordion::before,.accordion::after{display:none}
.accordion-item{background:transparent;border:0;border-top:1px solid var(--line)}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-title{
  position:relative;display:block;background:transparent;border:0;
  padding:26px 44px 26px 0;margin:0;
  font-family:var(--serif);font-size:17px;line-height:1.6;color:var(--ink);
  transition:color .25s ease;
}
.accordion-title::before{
  content:'';display:none !important;
  position:absolute;right:2px;top:50%;width:14px;height:14px;
  transform:translateY(-50%);
  transition:transform .3s ease;
  background:
    linear-gradient(var(--ink),var(--ink)) center/14px 1px no-repeat,
    linear-gradient(var(--ink),var(--ink)) center/1px 14px no-repeat;
}
.accordion-title::after{
  content:'';position:absolute;right:2px;top:50%;width:14px;height:14px;
  transform:translateY(-50%);
  transition:transform .3s ease;
  background:
    linear-gradient(var(--ink),var(--ink)) center/14px 1px no-repeat,
    linear-gradient(var(--ink),var(--ink)) center/1px 14px no-repeat;
}
.accordion-title:hover{color:var(--cinnabar)}
.accordion-item.is-active .accordion-title::after,
.accordion-title[aria-expanded="true"]::after{transform:translateY(-50%) rotate(45deg)}
.accordion-content{
  background:transparent;border:0;padding:0 64px 26px 0;
  font-size:15px;line-height:1.85;color:var(--muted);
}
.accordion-content p{margin:0}

/* ---------- cross links ---------- */
.cross-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.cross-card{
  display:block;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-card);padding:36px;
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.cross-card:hover{transform:translateY(-4px);border-color:rgba(179,39,45,.32);box-shadow:var(--shadow-hover)}
.cross-tag{
  display:inline-block;font-size:12px;color:var(--cinnabar);
  background:rgba(179,39,45,.08);border-radius:999px;padding:4px 12px;margin-bottom:20px;
}
.cross-card h3{font-size:22px;line-height:1.4;margin-bottom:14px}
.cross-card p{font-size:15px;line-height:1.85;color:var(--muted);margin-bottom:24px}

/* ---------- cta band ---------- */
.cta-band{background:var(--ink);color:var(--paper);padding:96px 0}
.cta-grid{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.cta-band .eyebrow{color:rgba(247,243,236,.6)}
.cta-band .eyebrow i{background:var(--cinnabar)}
.cta-band h2{color:var(--paper);font-size:clamp(30px,3.4vw,44px);line-height:1.24;margin:18px 0 22px}
.cta-band p{font-size:16px;line-height:1.9;color:rgba(247,243,236,.72)}
.cta-note{font-size:13px;color:rgba(247,243,236,.52);margin-top:20px;letter-spacing:.02em}
.form-field{margin-bottom:26px}
.form-field label{display:block;font-size:13px;letter-spacing:.06em;color:rgba(247,243,236,.6);margin-bottom:8px}
.form-field input,.form-field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(247,243,236,.28);
  border-radius:0;padding:10px 0;color:var(--paper);font-size:16px;line-height:1.6;
  transition:border-color .25s ease;
  box-shadow:none;
}
.form-field input::placeholder,.form-field textarea::placeholder{color:rgba(247,243,236,.34)}
.form-field input:focus,.form-field textarea:focus{outline:none;border-bottom-color:var(--cinnabar)}
.form-note{font-size:13px;color:var(--ok);margin-top:16px;min-height:20px}

/* ---------- footer ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--ink);padding-top:72px}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.3fr;gap:48px;
  padding-bottom:56px;
}
.footer-brand p{
  margin-top:18px;font-size:14px;line-height:1.9;color:var(--muted);max-width:340px;
}
.footer-col h4{
  font-size:13px;letter-spacing:.12em;color:var(--ink);font-weight:600;
  font-family:var(--sans);margin:0 0 18px;
}
.footer-col li{margin-bottom:12px}
.footer-col a{font-size:14px;color:var(--muted)}
.footer-col a:hover{color:var(--cinnabar)}
.contact-item{
  display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);margin-bottom:12px;
}
.contact-item i{color:var(--gold);font-size:13px}
.footer-bottom{
  border-top:1px solid var(--line);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--muted);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.reveal.in-view{opacity:1;transform:none}

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

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  :root{--section-y:88px}
  .split{grid-template-columns:1fr;gap:40px}
  .sticky-side{position:static}
  .module-row{gap:40px;padding:48px 0}
  .timeline{grid-template-columns:repeat(2,1fr);gap:36px 28px}
  .timeline::before{display:none}
  .timeline-item{border-top:1px solid var(--line);padding-top:32px}
  .timeline-item .node{top:-6px;left:0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:40px}
  .cta-grid{grid-template-columns:1fr;gap:48px}
  .cta-band{padding:80px 0}
}
@media screen and (max-width:767px){
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-right .nav-text,.nav-right .btn-outline-line{display:none}
  .burger{display:block}
  .page-banner{min-height:300px}
  .banner-inner{padding-top:72px;padding-bottom:36px}
  .module-row{grid-template-columns:1fr;gap:28px}
  .module-row.reverse .module-media{order:0}
  .cross-grid{grid-template-columns:1fr;gap:20px}
  .section-head{margin-bottom:40px}
  .accordion-content{padding-right:0}
  .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:36px}
  .footer-bottom{flex-direction:column;gap:8px}
}
@media screen and (max-width:640px){
  :root{--section-y:72px}
  .timeline{grid-template-columns:1fr}
  .prose-blocks p{font-size:16px}
  .module-body > p{font-size:15.5px}
}

/* roulang page: category2 */
:root{
  --ink:#14100E;
  --ink-2:#2A2422;
  --paper:#F7F3EC;
  --surface:#FFFDF9;
  --cinnabar:#B3272D;
  --cinnabar-deep:#8C1C22;
  --jade:#2F4F4A;
  --gold:#B08A4F;
  --line:#E4DCD0;
  --muted:#6E655C;
  --ok:#3E7A5E;
  --r-card:10px;
  --r-btn:4px;
  --r-img:8px;
  --shadow-hover:0 16px 32px rgba(20,16,14,.08);
  --shadow-layer:0 8px 40px rgba(20,16,14,.12);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC",STSong,serif;
  --font-sans:"PingFang SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","JetBrains Mono",ui-monospace,SFMono-Regular,monospace;
  --section:clamp(64px,8vw,112px);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-2);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-serif);
  font-weight:500;
  color:var(--ink);
  line-height:1.3;
  letter-spacing:.02em;
}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img{max-width:100%;height:auto;display:block;border:0}
a,a:visited{color:inherit;text-decoration:none;transition:color .25s ease}
button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit}
input,textarea,select{font-family:inherit;font-size:16px;color:var(--ink-2)}
:focus-visible{outline:2px solid var(--cinnabar);outline-offset:2px}
::selection{background:rgba(179,39,45,.16)}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px}
@media (min-width:1024px){.container{padding-left:40px;padding-right:40px}}

.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-margin-x > .cell{padding-left:12px;padding-right:12px}
@media (max-width:639px){
  .grid-x.grid-margin-x{margin-left:-8px;margin-right:-8px}
  .grid-x.grid-margin-x > .cell{padding-left:8px;padding-right:8px}
}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  height:72px;display:flex;align-items:center;
  border-bottom:1px solid var(--line);
  background:rgba(247,243,236,.92);
  backdrop-filter:blur(0px);
  transition:height .3s ease,backdrop-filter .3s ease,background .3s ease;
}
.site-header.is-scrolled{height:56px;backdrop-filter:blur(12px);background:rgba(247,243,236,.92)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;width:100%}
.brand{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-serif);font-size:19px;letter-spacing:.04em;color:var(--ink);
  white-space:nowrap;
}
.seal{width:8px;height:8px;background:var(--cinnabar);display:inline-block;flex:0 0 8px}
.nav-links{display:flex;align-items:center;gap:32px}
.nav-links a{
  position:relative;font-size:15px;letter-spacing:.02em;color:var(--ink-2);
  padding:6px 0;display:inline-block;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--cinnabar);transform:scaleX(0);transform-origin:left;
  transition:transform .25s ease;
}
.nav-links a:hover{color:var(--cinnabar)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--ink)}
.nav-links a.active::after{transform:scaleX(1)}
.nav-right{display:flex;align-items:center;gap:20px}
.nav-text{font-size:15px;letter-spacing:.02em;color:var(--ink-2);position:relative}
.nav-text::after{content:"";position:absolute;left:0;bottom:-2px;width:100%;height:1px;background:var(--cinnabar);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.nav-text:hover{color:var(--cinnabar)}
.nav-text:hover::after{transform:scaleX(1)}
.btn-outline-line{
  display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--ink);color:var(--ink);border-radius:var(--r-btn);
  padding:10px 22px;font-size:15px;letter-spacing:.02em;min-height:44px;
  transition:border-color .25s ease,color .25s ease,transform .25s ease;
}
.btn-outline-line:hover{border-color:var(--cinnabar);color:var(--cinnabar);transform:translateY(-1px)}
.burger{display:none;position:relative;width:44px;height:44px;flex:0 0 44px}
.burger span{position:absolute;left:11px;right:11px;height:1px;background:var(--ink);transition:transform .3s ease,top .3s ease}
.burger span:nth-child(1){top:19px}
.burger span:nth-child(2){top:25px}
body.drawer-open .burger span:nth-child(1){top:22px;transform:rotate(45deg)}
body.drawer-open .burger span:nth-child(2){top:22px;transform:rotate(-45deg)}

.nav-drawer{
  position:fixed;left:0;right:0;top:56px;bottom:0;z-index:110;
  background:rgba(247,243,236,.98);
  backdrop-filter:blur(12px);
  padding:18px 24px 48px;
  overflow-y:auto;
  opacity:0;visibility:hidden;transform:translateY(-8px);
  transition:opacity .3s ease,transform .3s ease,visibility .3s ease;
  box-shadow:var(--shadow-layer);
}
body.drawer-open .nav-drawer{opacity:1;visibility:visible;transform:none}
.nav-drawer a.drawer-link{
  display:block;font-family:var(--font-serif);font-size:28px;color:var(--ink);
  padding:20px 0;border-bottom:1px solid var(--line);line-height:1.3;
}
.nav-drawer a.drawer-link:hover{color:var(--cinnabar)}
.nav-drawer .drawer-foot{margin-top:32px;display:flex;flex-direction:column;gap:14px}
.nav-drawer .drawer-foot a{font-size:15px;color:var(--muted)}
.nav-drawer .drawer-foot a:hover{color:var(--cinnabar)}
@media (min-width:768px){.nav-drawer{display:none}}
@media (max-width:767px){
  .nav-links{display:none}
  .nav-right .nav-text,.nav-right .btn-outline-line{display:none}
  .burger{display:block}
  .nav-inner{gap:16px}
  .brand{font-size:17px}
}

/* ---------- 通用按钮/标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 32px;border-radius:var(--r-btn);font-size:15px;letter-spacing:.04em;
  min-height:44px;transition:background-color .25s ease,color .25s ease,transform .25s ease,border-color .25s ease;
}
.btn-primary{background:var(--cinnabar);color:#FFFDF9}
.btn-primary:hover{background:var(--cinnabar-deep);color:#FFFDF9;transform:translateY(-1px)}
.btn-ghost{border:1px solid rgba(247,243,236,.5);color:#F7F3EC}
.btn-ghost:hover{border-color:var(--cinnabar);color:#F7F3EC;background:rgba(179,39,45,.24)}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;color:var(--cinnabar);min-height:44px}
.link-arrow i{transition:transform .25s ease}
.link-arrow:hover{color:var(--cinnabar-deep)}
.link-arrow:hover i{transform:translateX(4px)}
.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;letter-spacing:.02em;
  background:rgba(179,39,45,.08);color:var(--cinnabar);line-height:1.8;
}
.tag-jade{background:transparent;border:1px solid var(--jade);color:var(--jade)}
.kicker{display:flex;align-items:center;gap:12px;font-size:14px;color:var(--muted);letter-spacing:.02em;margin-bottom:16px}
.kicker::before{content:"";width:32px;height:1px;background:var(--cinnabar);flex:0 0 32px}
.kicker .num{font-family:var(--font-num);font-size:12px;letter-spacing:.16em;color:var(--gold);text-transform:uppercase}

/* ---------- 顶部 Banner ---------- */
.page-banner{position:relative;min-height:340px;display:flex;align-items:flex-end;overflow:hidden;border-bottom:1px solid var(--line)}
.banner-media{position:absolute;inset:0;background-size:cover;background-position:center;filter:saturate(.92);transform:scale(1.02)}
.banner-media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(20,16,14,.32),rgba(20,16,14,.5))}
.page-banner .container{position:relative;z-index:2;padding-top:110px;padding-bottom:52px}
.banner-label{font-size:13px;letter-spacing:.14em;color:rgba(247,243,236,.78);text-transform:uppercase;margin-bottom:14px;font-family:var(--font-num)}
.page-banner h1{
  color:#F7F3EC;font-size:clamp(34px,4.6vw,58px);line-height:1.12;letter-spacing:.02em;
  margin-bottom:14px;
}
.banner-sub{color:rgba(247,243,236,.82);font-size:16px;max-width:640px;line-height:1.8}
@media (max-width:639px){
  .page-banner{min-height:300px}
  .page-banner .container{padding-top:84px;padding-bottom:36px}
  .banner-sub{font-size:15px}
}

/* ---------- 面包屑 ---------- */
.crumb-wrap{border-bottom:1px solid var(--line);background:var(--paper)}
.crumb{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--muted);padding:18px 0;flex-wrap:wrap}
.crumb a:hover{color:var(--cinnabar)}
.crumb .sep{color:#C9BEB0}
.crumb .current{color:var(--ink)}

/* ---------- 概览两栏 ---------- */
.intro{padding:var(--section) 0}
.intro-side{position:sticky;top:104px}
.intro-side h2{font-size:clamp(26px,3vw,34px);margin-bottom:16px}
.intro-side p{color:var(--muted);font-size:15px}
.intro-body p{padding:22px 0;border-top:1px solid var(--line);font-size:17px;line-height:1.85}
.intro-body p:first-child{border-top:0;padding-top:0}
.intro-body strong{font-weight:600;color:var(--ink)}
@media (max-width:1023px){
  .intro-side{position:static;margin-bottom:28px}
}

/* ---------- 板块通用 ---------- */
.section{padding:var(--section) 0}
.section-tint{background:rgba(255,253,249,.72);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:48px;flex-wrap:wrap}
.section-head h2{font-size:clamp(26px,3.2vw,38px);margin-bottom:12px}
.section-head p{color:var(--muted);font-size:15px;max-width:560px}

/* ---------- 案例横向卡片 ---------- */
.case-cell{display:flex;margin-bottom:24px}
.case-card{
  display:flex;width:100%;height:100%;gap:0;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;transition:transform .35s ease,box-shadow .35s ease,border-color .35s ease;
}
.case-card:hover{transform:translateY(-4px);border-color:rgba(179,39,45,.28);box-shadow:var(--shadow-hover)}
.case-media{flex:0 0 40%;overflow:hidden;background:var(--line)}
.case-media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}
.case-card:hover .case-media img{transform:scale(1.03)}
.case-body{padding:26px;display:flex;flex-direction:column;gap:10px;justify-content:center}
.case-body h3{font-size:19px;line-height:1.45}
.case-body p{font-size:14px;color:var(--muted);line-height:1.8}
.case-meta{font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:12px;margin-top:4px}
@media (max-width:639px){
  .case-card{flex-direction:column}
  .case-media{flex:0 0 auto;height:190px}
  .case-body{padding:22px}
}

/* ---------- 时间线 ---------- */
.timeline{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:16px}
.timeline-item{position:relative;padding:44px 32px 0 0}
.timeline-item::before{content:"";position:absolute;left:0;right:0;top:14px;height:1px;background:var(--line)}
.timeline-item .dot{
  position:absolute;left:0;top:9px;width:10px;height:10px;border-radius:50%;
  border:1px solid var(--cinnabar);background:var(--paper);z-index:2;
}
.timeline-item.is-done .dot{background:var(--cinnabar)}
.timeline-item .step{
  font-family:var(--font-num);font-size:13px;letter-spacing:.16em;color:var(--gold);
  display:block;margin-bottom:10px;
}
.timeline-item h3{font-size:20px;margin-bottom:10px}
.timeline-item p{font-size:14px;color:var(--muted);line-height:1.8;max-width:260px}
@media (max-width:1023px){
  .timeline{grid-template-columns:repeat(2,1fr)}
  .timeline-item{padding-right:24px;margin-bottom:36px}
}
@media (max-width:639px){
  .timeline{grid-template-columns:1fr}
  .timeline-item{padding:0 0 30px 28px;margin-bottom:0}
  .timeline-item::before{left:4px;right:auto;top:6px;bottom:6px;width:1px;height:auto}
  .timeline-item .dot{left:-4px;top:12px}
  .timeline-item p{max-width:none}
}

/* ---------- 手风琴 ---------- */
.faq-wrap{margin-top:4px}
.accordion{border:0;margin:0;background:transparent}
.accordion-item{border:0;border-top:1px solid var(--line);background:transparent}
.accordion-item:last-child{border-bottom:1px solid var(--line)}
.accordion-title{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;border:0;background:transparent;
  font-family:var(--font-serif);font-size:17px;color:var(--ink);line-height:1.5;
  transition:color .25s ease;
}
.accordion-title:hover,.accordion-title:focus{background:transparent;color:var(--cinnabar)}
.accordion-title::before{display:none !important;content:none !important}
.faq-mark{position:relative;width:14px;height:14px;flex:0 0 14px;transition:transform .3s ease}
.faq-mark::before,.faq-mark::after{content:"";position:absolute;left:0;top:50%;width:14px;height:1px;background:var(--ink);transition:background-color .25s ease}
.faq-mark::after{transform:rotate(90deg)}
.accordion-item.is-active .faq-mark{transform:rotate(45deg)}
.accordion-item.is-active .faq-mark::before,.accordion-item.is-active .faq-mark::after{background:var(--cinnabar)}
.accordion-content{padding:0 0 24px;border:0;background:transparent;color:var(--muted);font-size:15px;line-height:1.85}
.accordion-content p{margin:0 0 10px}
.accordion-content p:last-child{margin-bottom:0}

/* ---------- 互链宽卡 ---------- */
.link-card{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:32px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;height:100%;
}
.link-card:hover{transform:translateY(-4px);border-color:rgba(179,39,45,.3);box-shadow:var(--shadow-hover)}
.link-card .lc-text{max-width:520px}
.link-card h3{font-size:20px;margin-bottom:8px}
.link-card p{font-size:14px;color:var(--muted)}
.link-card .lc-icon{
  flex:0 0 44px;width:44px;height:44px;border-radius:50%;border:1px solid var(--line);
  display:flex;align-items:center;justify-content:center;color:var(--cinnabar);font-size:14px;
  transition:border-color .3s ease,background-color .3s ease;
}
.link-card:hover .lc-icon{border-color:var(--cinnabar);background:rgba(179,39,45,.06)}
@media (max-width:639px){
  .link-card{padding:24px;flex-direction:column;align-items:flex-start}
}

/* ---------- CTA / 表单 ---------- */
.cta{background:var(--ink);color:#F7F3EC;padding:96px 0}
.cta h2{color:#F7F3EC;font-size:clamp(28px,3.4vw,44px);line-height:1.24;margin-bottom:18px}
.cta .cta-lead{color:rgba(247,243,236,.72);font-size:16px;max-width:480px;margin-bottom:28px}
.cta .cta-note{font-size:13px;color:rgba(247,243,236,.55);margin-top:20px}
.cta-form{border-left:1px solid rgba(247,243,236,.16);padding-left:40px}
.field{margin-bottom:24px}
.field label{display:block;font-size:13px;letter-spacing:.02em;color:rgba(247,243,236,.62);margin-bottom:8px}
.field input,.field textarea{
  width:100%;background:transparent;border:0;border-bottom:1px solid rgba(247,243,236,.28);
  color:#F7F3EC;padding:10px 0;border-radius:0;transition:border-color .25s ease,box-shadow .25s ease;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(247,243,236,.34)}
.field input:focus,.field textarea:focus{
  outline:none;border-bottom-color:var(--cinnabar);box-shadow:0 1px 0 var(--cinnabar);
}
.field textarea{resize:vertical;min-height:88px;line-height:1.8}
.field-error{display:block;font-size:12px;color:#E79A9E;margin-top:6px}
@media (max-width:1023px){
  .cta{padding:72px 0}
  .cta-form{border-left:0;padding-left:0;margin-top:36px}
}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--paper);border-top:1px solid var(--ink);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1.2fr;gap:40px}
.footer-brand .brand{font-size:18px;margin-bottom:18px}
.footer-brand p{font-size:14px;color:var(--muted);max-width:340px;line-height:1.85}
.site-footer h4{
  font-family:var(--font-sans);font-size:15px;font-weight:600;color:var(--ink);
  margin-bottom:18px;letter-spacing:.02em;
}
.footer-col li{margin-bottom:10px}
.footer-col li a{font-size:14px;color:var(--muted)}
.footer-col li a:hover{color:var(--cinnabar)}
.contact-item{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--muted);margin-bottom:12px}
.contact-item i{color:var(--cinnabar);font-size:13px;width:16px;text-align:center}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--muted);letter-spacing:.02em;
}
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:639px){
  .site-footer{padding:56px 0 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;gap:8px}
}

/* ---------- 入场动效 ---------- */
.js .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s cubic-bezier(.22,.61,.36,1),transform .5s cubic-bezier(.22,.61,.36,1)}
.js .reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
  .js .reveal{opacity:1;transform:none}
}