/* roulang page: index */
:root{
  --ink:#1B1A17;
  --red:#8B2E3C;
  --red-hover:#A63E4A;
  --red-soft:rgba(139,46,60,.08);
  --olive:#5E6654;
  --paper:#F4F0E7;
  --card:#FCFAF5;
  --line:#D7CDBD;
  --line-strong:#BFB2A0;
  --muted:#756F66;
  --dark:#171613;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  --max:1240px;
  --radius:4px;
  --radius-sm:2px;
  --shadow:0 12px 30px rgba(27,26,23,.08);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--red);}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;margin:0;color:var(--ink);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;}

.container{max-width:var(--max);padding-left:24px;padding-right:24px;margin:0 auto;width:100%;}
.section{padding:96px 0;border-top:1px solid var(--line);}
.section-head{margin-bottom:48px;}
.eyebrow{
  display:inline-block;font-size:12px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--muted);border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:5px 12px;margin-bottom:22px;background:rgba(252,250,245,.6);
}
.section-title{font-size:clamp(1.8rem,3.4vw,3rem);line-height:1.16;letter-spacing:-.01em;}
.section-lead{margin-top:18px;color:var(--muted);font-size:16px;max-width:620px;}

/* ---------- Buttons ---------- */
.btn-ink,.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 24px;border-radius:var(--radius-sm);
  font-size:14px;letter-spacing:.08em;font-family:var(--sans);
  transition:background-color .22s ease,color .22s ease,border-color .22s ease;
  cursor:pointer;border:1px solid transparent;
}
.btn-ink{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-ink:hover{background:var(--red);border-color:var(--red);color:#fff;}
.btn-line{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-line:hover{background:var(--ink);color:var(--paper);}
.btn-ink .arrow,.btn-line .arrow,.link-more .arrow{transition:transform .22s ease;display:inline-block;}
.btn-ink:hover .arrow,.btn-line:hover .arrow,.link-more:hover .arrow{transform:translateX(3px);}
.link-more{
  display:inline-flex;align-items:center;gap:8px;font-size:14px;letter-spacing:.06em;
  color:var(--ink);border-bottom:1px solid var(--line-strong);padding-bottom:3px;
}
.link-more:hover{color:var(--red);border-color:var(--red);}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(244,240,231,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%) blur(6px);
}
.nav-bar{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;
  height:78px;
}
.nav-left{display:flex;align-items:center;gap:30px;justify-self:start;}
.nav-right{display:flex;align-items:center;gap:30px;justify-self:end;}
.nav-link-x{
  position:relative;font-size:14px;letter-spacing:.08em;color:var(--ink);padding:6px 0;
}
.nav-link-x::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--red);
  transition:width .26s ease;
}
.nav-link-x:hover::after,.nav-link-x.is-active::after{width:100%;}
.nav-link-x.is-active{color:var(--red);}
.brand{display:block;text-align:center;line-height:1;}
.brand-main{
  display:block;font-family:var(--serif);font-weight:600;
  font-size:26px;letter-spacing:.2em;text-indent:.2em;color:var(--ink);
}
.brand-sub{display:block;margin-top:7px;font-size:11px;letter-spacing:.34em;text-indent:.34em;color:var(--muted);}
.brand:hover .brand-main{color:var(--red);}
.nav-cta{
  display:inline-flex;align-items:center;height:40px;padding:0 18px;font-size:13px;letter-spacing:.08em;
  border:1px solid var(--ink);border-radius:var(--radius-sm);color:var(--ink);
  transition:background-color .22s ease,color .22s ease;
}
.nav-cta:hover{background:var(--ink);color:var(--paper);}
.nav-burger{
  justify-self:start;width:40px;height:40px;border:1px solid var(--line);background:transparent;
  border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;
  flex-direction:column;gap:4px;cursor:pointer;
}
.nav-burger span{display:block;width:16px;height:1.5px;background:var(--ink);}
.mobile-panel{padding:8px 24px 30px;border-top:1px solid var(--line);background:var(--paper);}
.mobile-panel a.m-link{
  display:block;font-family:var(--serif);font-size:21px;padding:15px 0;
  border-bottom:1px solid var(--line);color:var(--ink);
}
.mobile-panel a.m-link.is-active{color:var(--red);}
.mobile-panel .btn-ink{width:100%;margin-top:22px;}

/* ---------- Hero ---------- */
.hero{padding:70px 0 96px;}
.hero-grid{display:grid;grid-template-columns:6.5fr 5.5fr;gap:60px;align-items:start;}
.hero h1{
  font-size:clamp(2.4rem,5.2vw,4.5rem);line-height:1.06;letter-spacing:-.012em;
  margin-bottom:26px;
  animation:fadeUp .5s ease both;
}
.hero-sub{
  font-size:18px;line-height:1.8;color:#3E3A33;max-width:560px;
  animation:fadeUp .5s .08s ease both;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;animation:fadeUp .5s .14s ease both;}
.hero-proof{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  margin-top:52px;padding-top:26px;border-top:1px solid var(--line);
  animation:fadeUp .5s .2s ease both;
}
.hero-proof dt{font-size:12px;letter-spacing:.1em;color:var(--muted);margin-bottom:8px;}
.hero-proof dd{margin:0;font-size:14px;line-height:1.7;color:var(--ink);}
.hero-media{position:relative;animation:fadeIn .7s .1s ease both;}
.hero-media .main-img{
  width:100%;aspect-ratio:4/5;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--radius-sm);
}
.hero-media .thumb-img{
  position:absolute;left:-26px;bottom:36px;width:38%;aspect-ratio:1/1;object-fit:cover;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--card);
}
.hero-media .media-tag{
  position:absolute;right:14px;top:14px;font-size:11px;letter-spacing:.18em;
  color:var(--paper);background:rgba(27,26,23,.72);padding:5px 10px;border-radius:var(--radius-sm);
}
.hero-media .grid-line{
  position:absolute;left:-26px;top:0;width:1px;height:96px;background:var(--line);
}
@keyframes fadeUp{from{opacity:0;transform:translateY(12px);}to{opacity:1;transform:none;}}
@keyframes fadeIn{from{opacity:0;}to{opacity:1;}}

/* ---------- Feature ---------- */
.feature-grid{display:grid;grid-template-columns:4fr 8fr;gap:64px;align-items:start;}
.feature-aside{position:sticky;top:110px;}
.anchor-list{margin-top:28px;border-top:1px solid var(--line);}
.anchor-list a{
  display:flex;justify-content:space-between;align-items:center;
  padding:12px 0;border-bottom:1px solid var(--line);
  font-size:14px;letter-spacing:.04em;color:var(--muted);
}
.anchor-list a:hover{color:var(--red);}
.feature-rows{border-top:1px solid var(--line);}
.feature-row{
  display:grid;grid-template-columns:64px 1fr 24px;gap:26px;align-items:start;
  padding:30px 0;border-bottom:1px solid var(--line);
  transition:background-color .2s ease;
}
.feature-row:hover{background:rgba(252,250,245,.7);}
.feature-num{
  font-family:Georgia,"Times New Roman",serif;font-size:15px;letter-spacing:.12em;
  color:var(--red);padding-top:4px;
}
.feature-row h3{font-size:1.28rem;margin-bottom:8px;}
.feature-row p{font-size:15.5px;line-height:1.8;color:var(--muted);max-width:560px;}
.feature-row .row-arrow{color:var(--line-strong);font-size:18px;padding-top:2px;transition:transform .22s ease,color .22s ease;}
.feature-row:hover .row-arrow{transform:translateX(3px);color:var(--red);}

/* ---------- Scenes ---------- */
.scene{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:center;padding:44px 0;border-top:1px solid var(--line);}
.scene:first-of-type{border-top:none;padding-top:0;}
.scene.reverse{grid-template-columns:7fr 5fr;}
.scene.reverse .scene-media{order:2;}
.scene.reverse .scene-body{order:1;}
.scene-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--line);border-radius:var(--radius-sm);transition:transform .3s ease;}
.scene-media{overflow:hidden;border-radius:var(--radius-sm);}
.scene-media:hover img{transform:scale(1.03);}
.scene-num{font-family:Georgia,serif;font-size:42px;line-height:1;color:var(--line-strong);margin-bottom:14px;}
.scene-body h3{font-size:clamp(1.4rem,2.2vw,1.9rem);margin-bottom:10px;}
.scene-for{font-size:14px;color:var(--olive);letter-spacing:.04em;margin-bottom:20px;}
.scene-points li{
  position:relative;padding-left:20px;font-size:15.5px;line-height:1.8;color:#3E3A33;margin-bottom:8px;
}
.scene-points li::before{
  content:"";position:absolute;left:0;top:12px;width:7px;height:7px;background:var(--red);border-radius:1px;
}
.scene-body .link-more{margin-top:22px;}

/* ---------- Cases ---------- */
.case-grid{display:grid;grid-template-columns:7fr 5fr;gap:26px;align-items:stretch;}
.case-lead{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.case-lead:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--line-strong);}
.case-lead img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.case-lead-body{padding:28px;}
.case-tag{
  display:inline-block;font-size:11.5px;letter-spacing:.12em;color:var(--olive);
  border:1px solid var(--line);border-radius:var(--radius-sm);padding:3px 9px;margin-bottom:14px;
}
.case-lead h3{font-size:1.5rem;margin-bottom:12px;}
.case-metric{
  font-family:Georgia,serif;font-size:clamp(2.2rem,4vw,3rem);line-height:1;color:var(--red);
  margin:8px 0 6px;
}
.case-metric small{font-family:var(--sans);font-size:13px;color:var(--muted);letter-spacing:.04em;margin-left:8px;}
.case-lead p{font-size:15px;color:var(--muted);line-height:1.8;}
.case-side{display:flex;flex-direction:column;gap:26px;}
.case-row{
  flex:1;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:24px 26px;display:flex;flex-direction:column;justify-content:space-between;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.case-row:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--line-strong);}
.case-row .case-metric{font-size:2rem;}
.case-row h3{font-size:1.12rem;margin:12px 0 6px;}
.case-row p{font-size:14px;color:var(--muted);}
.case-note{margin-top:20px;font-size:12.5px;color:var(--muted);letter-spacing:.02em;}

/* ---------- Price ---------- */
.price-note{
  display:flex;flex-wrap:wrap;gap:12px;align-items:center;font-size:13.5px;color:var(--muted);
  margin-bottom:32px;
}
.price-note .pill{
  border:1px solid var(--line);border-radius:var(--radius-sm);padding:4px 12px;font-size:12.5px;
  background:rgba(252,250,245,.7);color:var(--ink);
}
.price-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--card);
}
.price-col{padding:36px 30px;border-right:1px solid var(--line);display:flex;flex-direction:column;}
.price-col:last-child{border-right:none;}
.price-col.featured{background:#FAF5EE;border-top:2px solid var(--red);}
.price-name{font-family:var(--serif);font-size:1.4rem;margin-bottom:6px;}
.price-target{font-size:13px;color:var(--muted);letter-spacing:.04em;min-height:40px;}
.price-amount{
  font-family:Georgia,serif;font-size:2.1rem;line-height:1.1;margin:18px 0 4px;color:var(--ink);
}
.price-amount small{font-family:var(--sans);font-size:13px;color:var(--muted);margin-left:6px;}
.price-cycle{font-size:12.5px;color:var(--muted);margin-bottom:22px;}
.price-list{border-top:1px solid var(--line);padding-top:20px;margin-bottom:26px;flex:1;}
.price-list li{font-size:14.5px;line-height:1.75;padding:7px 0 7px 18px;position:relative;color:#3E3A33;}
.price-list li::before{content:"";position:absolute;left:0;top:15px;width:6px;height:6px;border:1px solid var(--red);border-radius:1px;}
.price-deliver{font-size:13px;color:var(--muted);margin-bottom:20px;}
.price-col .btn-ink,.price-col .btn-line{width:100%;}

/* ---------- News ---------- */
.news-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:44px;}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px;}
.news-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--line-strong);}
.news-meta{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap;}
.badge-line{
  display:inline-block;font-size:11.5px;letter-spacing:.1em;color:var(--red);
  border:1px solid rgba(139,46,60,.35);border-radius:var(--radius-sm);padding:3px 9px;
  background:var(--red-soft);
}
.news-meta time{font-size:12.5px;color:var(--muted);letter-spacing:.04em;}
.news-card h3{font-size:1.16rem;line-height:1.5;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card h3 a:hover{color:var(--red);}
.news-card p{font-size:14.5px;line-height:1.8;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:20px;}
.news-card .link-more{margin-top:auto;font-size:13.5px;}
.news-empty{
  border:1px dashed var(--line-strong);border-radius:var(--radius);
  padding:56px 24px;text-align:center;color:var(--muted);font-size:15px;background:rgba(252,250,245,.6);
}

/* ---------- FAQ ---------- */
.faq-grid{display:grid;grid-template-columns:4fr 8fr;gap:64px;align-items:start;}
.faq-aside p{margin-top:16px;font-size:15px;color:var(--muted);max-width:340px;}
.accordion-item{background:transparent;border:none;border-top:1px solid var(--line);}
.accordion-item:last-child{border-bottom:1px solid var(--line);}
.accordion-button{
  background:transparent;box-shadow:none;padding:22px 0;font-family:var(--sans);
  font-size:17px;font-weight:500;color:var(--ink);border-radius:0;
}
.accordion-button:not(.collapsed){color:var(--red);background:transparent;box-shadow:none;border-left:2px solid var(--red);padding-left:16px;}
.accordion-button:focus{box-shadow:none;border-color:var(--line);}
.accordion-button::after{
  width:14px;height:14px;background-size:14px;background-image:none;
  content:"+";font-size:18px;line-height:1;display:flex;align-items:center;justify-content:center;
  color:var(--red);transform:none;transition:transform .2s ease;
}
.accordion-button:not(.collapsed)::after{content:"−";transform:none;}
.accordion-body{padding:0 0 24px;font-size:16px;line-height:1.85;color:var(--muted);max-width:720px;}

/* ---------- CTA ---------- */
.cta-band{background:var(--dark);color:var(--paper);border-top:1px solid var(--dark);}
.cta-inner{
  display:flex;justify-content:space-between;align-items:center;gap:40px;flex-wrap:wrap;
  padding:72px 0;
}
.cta-inner h2{color:var(--paper);font-size:clamp(1.6rem,2.8vw,2.4rem);line-height:1.2;}
.cta-inner p{color:#B9B2A6;font-size:15px;margin-top:14px;max-width:560px;}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap;}
.cta-band .btn-ink{background:var(--red);border-color:var(--red);color:#fff;}
.cta-band .btn-ink:hover{background:var(--red-hover);border-color:var(--red-hover);}
.cta-band .btn-line{border-color:#5B564C;color:var(--paper);}
.cta-band .btn-line:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:var(--paper);padding:72px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:48px;padding-bottom:56px;}
.footer-brand .brand-main{color:var(--paper);text-align:left;font-size:24px;}
.footer-brand .brand-sub{color:#8E877B;text-align:left;}
.footer-brand p{font-size:14px;color:#9C958A;line-height:1.9;margin-top:20px;max-width:300px;}
.footer-col h4{font-family:var(--sans);font-size:12px;letter-spacing:.16em;color:#8E877B;margin-bottom:20px;font-weight:500;}
.footer-col a,.footer-col span{display:block;font-size:14px;color:#D8D2C7;padding:6px 0;transition:color .2s ease;}
.footer-col a:hover{color:var(--red-hover);}
.footer-bottom{
  border-top:1px solid #2C2A26;padding:24px 0;
  display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;
  font-size:12.5px;color:#7E7769;letter-spacing:.03em;
}
.back-top{color:#D8D2C7;font-size:12.5px;letter-spacing:.08em;border-bottom:1px solid #3A372F;padding-bottom:2px;}
.back-top:hover{color:var(--red-hover);border-color:var(--red-hover);}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .hero-grid{gap:44px;}
  .feature-grid{gap:44px;}
  .faq-grid{gap:44px;}
  .scene{gap:40px;}
}
@media (max-width:991.98px){
  .section{padding:72px 0;}
  .nav-bar{grid-template-columns:auto 1fr auto;height:64px;gap:12px;}
  .nav-bar .brand{justify-self:center;}
  .brand-main{font-size:20px;letter-spacing:.18em;text-indent:.18em;}
  .brand-sub{font-size:10px;letter-spacing:.26em;text-indent:.26em;margin-top:5px;}
  .hero{padding:44px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:44px;}
  .hero-media{order:-1;}
  .hero-media .main-img{aspect-ratio:3/2;}
  .hero-media .thumb-img{width:32%;left:auto;right:16px;bottom:-24px;}
  .feature-grid{grid-template-columns:1fr;gap:32px;}
  .feature-aside{position:static;}
  .scene,.scene.reverse{grid-template-columns:1fr;gap:28px;padding:36px 0;}
  .scene.reverse .scene-media{order:0;}
  .scene.reverse .scene-body{order:0;}
  .case-grid{grid-template-columns:1fr;}
  .price-grid{grid-template-columns:1fr;}
  .price-col{border-right:none;border-bottom:1px solid var(--line);}
  .price-col:last-child{border-bottom:none;}
  .news-grid{grid-template-columns:repeat(2,1fr);}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .cta-inner{padding:56px 0;}
}
@media (max-width:575.98px){
  body{font-size:16px;}
  .section{padding:56px 0;}
  .container{padding-left:18px;padding-right:18px;}
  .hero-proof{grid-template-columns:1fr;gap:16px;}
  .hero-actions .btn-ink,.hero-actions .btn-line{width:100%;}
  .news-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .cta-actions{width:100%;}
  .cta-actions .btn-ink,.cta-actions .btn-line{width:100%;}
  .feature-row{grid-template-columns:44px 1fr;gap:16px;}
  .feature-row .row-arrow{display:none;}
  .case-lead-body{padding:22px;}
  .price-col{padding:28px 22px;}
  .scene-num{font-size:34px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .scene-media:hover img,.case-lead:hover,.case-row:hover,.news-card:hover,.feature-row:hover .row-arrow{transform:none!important;}
}

/* roulang page: category1 */
:root{
  --ink:#1B1A17;
  --ink-soft:#2A2823;
  --red:#8B2E3C;
  --red-hover:#A63E4A;
  --olive:#5E6654;
  --paper:#F4F0E7;
  --card:#FCFAF5;
  --line:#D7CDBD;
  --muted:#756F66;
  --dark:#171613;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --r-btn:2px;
  --r-card:4px;
  --shadow-hover:0 12px 30px rgba(27,26,23,.08);
  --space-sec:96px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--ink);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--red)}
h1,h2,h3,h4{font-family:var(--serif);font-weight:600;letter-spacing:-.005em;margin:0;color:var(--ink)}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
.container{max-width:1240px;margin:0 auto;padding:0 24px;width:100%}
.row{gap:0}
::selection{background:rgba(139,46,60,.16)}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(244,240,231,.96);
  backdrop-filter:saturate(120%) blur(6px);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  height:78px;
}
.nav-side{display:flex;align-items:center;gap:26px}
.nav-right{justify-content:flex-end}
.nav-side a.nav-item{
  position:relative;
  font-size:14px;
  letter-spacing:.08em;
  color:var(--ink);
  padding:6px 0;
  white-space:nowrap;
}
.nav-side a.nav-item::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--red);transition:width .26s ease;
}
.nav-side a.nav-item:hover::after{width:100%}
.nav-side a.nav-item.active{color:var(--red)}
.nav-side a.nav-item.active::after{width:100%}
.brand{display:flex;flex-direction:column;align-items:center;line-height:1;padding:0 12px}
.brand-main{
  font-family:var(--serif);
  font-size:26px;
  letter-spacing:.22em;
  color:var(--ink);
  text-indent:.22em;
}
.brand-sub{
  margin-top:7px;
  font-size:11px;
  letter-spacing:.32em;
  color:var(--muted);
  text-indent:.32em;
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;
  border:1px solid var(--ink);border-radius:var(--r-btn);
  font-size:13px;letter-spacing:.08em;color:var(--ink);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-cta:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.nav-toggle{
  display:none;align-items:center;justify-content:center;
  width:42px;height:38px;background:transparent;border:1px solid var(--line);
  border-radius:var(--r-btn);color:var(--ink);font-size:13px;letter-spacing:.08em;
}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--paper)}
.mobile-panel.open{display:block}
.mobile-panel ul{padding:8px 0 20px}
.mobile-panel li{border-bottom:1px solid var(--line)}
.mobile-panel li:last-child{border-bottom:none}
.mobile-panel a{
  display:flex;align-items:center;justify-content:space-between;
  padding:16px 0;font-family:var(--serif);font-size:20px;color:var(--ink);
}
.mobile-panel a span{font-family:var(--sans);font-size:12px;color:var(--muted);letter-spacing:.1em}
.mobile-panel .mobile-cta{
  display:flex;width:100%;margin-top:16px;justify-content:center;align-items:center;
  height:48px;background:var(--ink);color:var(--paper);border-radius:var(--r-btn);
  font-family:var(--sans);font-size:14px;letter-spacing:.1em;
}
.mobile-contact{
  display:none;font-size:13px;letter-spacing:.08em;color:var(--red);
  border-bottom:1px solid var(--red);padding-bottom:2px;
}

/* ---------- breadcrumb ---------- */
.crumb-bar{border-bottom:1px solid var(--line);background:var(--paper)}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding:16px 0;font-size:12.5px;letter-spacing:.06em;color:var(--muted);
}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--red)}
.crumb .sep{color:var(--line)}
.crumb .current{color:var(--ink)}

/* ---------- hero ---------- */
.cat-hero{padding:72px 0 84px;position:relative;overflow:hidden}
.cat-hero .hero-grid{
  display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.18em;color:var(--olive);
  border:1px solid var(--line);border-radius:var(--r-btn);
  padding:6px 12px;background:rgba(252,250,245,.7);
}
.eyebrow i{font-style:normal;color:var(--red);font-family:Georgia,serif}
.cat-hero h1{
  margin-top:24px;
  font-size:clamp(2.1rem,4.6vw,3.6rem);
  line-height:1.12;
  letter-spacing:-.01em;
}
.cat-hero h1 em{
  font-style:normal;color:var(--red);
}
.hero-lead{
  margin-top:24px;max-width:600px;
  font-size:17.5px;line-height:1.9;color:var(--ink-soft);
}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:22px;margin-top:34px}
.btn-main{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  background:var(--ink);color:var(--paper);border:1px solid var(--ink);
  font-size:14px;letter-spacing:.08em;
  transition:background .22s ease,border-color .22s ease,color .22s ease;
}
.btn-main:hover{background:var(--red);border-color:var(--red);color:#fff}
.btn-main .arw{transition:transform .2s ease}
.btn-main:hover .arw{transform:translateX(3px)}
.link-text{
  font-size:14px;letter-spacing:.04em;color:var(--ink);
  border-bottom:1px solid var(--line);padding-bottom:2px;text-underline-offset:4px;
}
.link-text:hover{color:var(--red);border-bottom-color:var(--red)}
.hero-figure{position:relative}
.hero-figure .frame{
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--card);
}
.hero-figure .frame img{width:100%;height:420px;object-fit:cover}
.hero-figure .corner{
  position:absolute;left:-14px;bottom:-14px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px 18px;display:flex;align-items:center;gap:14px;
}
.hero-figure .corner b{
  font-family:Georgia,"Times New Roman",serif;font-size:26px;line-height:1;color:var(--red);
}
.hero-figure .corner span{font-size:12px;letter-spacing:.1em;color:var(--muted);line-height:1.5}

/* ---------- generic section ---------- */
.section{padding:var(--space-sec) 0}
.section.tight{padding:72px 0}
.sec-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:48px}
.sec-label{font-size:12px;letter-spacing:.2em;color:var(--olive);margin-bottom:14px}
.sec-head h2{font-size:clamp(1.8rem,3.4vw,2.9rem);line-height:1.15}
.sec-head .desc{max-width:520px;color:var(--muted);font-size:16px;line-height:1.85;margin-top:14px}
.sec-rule{height:1px;background:var(--line);width:100%;margin-bottom:44px}

/* ---------- matrix table ---------- */
.matrix-wrap{border:1px solid var(--line);border-radius:var(--r-card);background:var(--card);overflow:hidden}
.matrix-scroll{overflow-x:auto}
table.matrix{width:100%;border-collapse:collapse;min-width:760px}
table.matrix thead th{
  text-align:left;font-family:var(--sans);font-weight:500;
  font-size:12px;letter-spacing:.14em;color:var(--muted);
  padding:18px 22px;border-bottom:1px solid var(--line);background:rgba(244,240,231,.6);
}
table.matrix tbody td{
  padding:22px;border-bottom:1px solid var(--line);vertical-align:top;
  font-size:15.5px;line-height:1.8;color:var(--ink-soft);
}
table.matrix tbody tr:last-child td{border-bottom:none}
table.matrix tbody tr:hover{background:rgba(139,46,60,.035)}
td.m-name{font-family:var(--serif);font-size:17px;color:var(--ink);white-space:nowrap}
td.m-name span{
  display:block;font-family:Georgia,serif;font-size:12px;color:var(--red);
  letter-spacing:.16em;margin-bottom:6px;
}
.tag{
  display:inline-block;font-size:12px;letter-spacing:.08em;
  padding:3px 10px;border:1px solid var(--line);border-radius:var(--r-btn);
  color:var(--olive);background:rgba(94,102,84,.06);
}
.tag.red{color:var(--red);border-color:rgba(139,46,60,.28);background:rgba(139,46,60,.06)}

/* ---------- capability rows ---------- */
.cap-list{border-top:1px solid var(--line)}
.cap-row{
  display:grid;grid-template-columns:84px 1fr 1.2fr 40px;
  gap:32px;align-items:start;
  padding:34px 0;border-bottom:1px solid var(--line);
  transition:background .2s ease,padding-left .2s ease;
}
.cap-row:hover{background:rgba(252,250,245,.9);padding-left:10px}
.cap-row .num{
  font-family:Georgia,"Times New Roman",serif;font-size:15px;letter-spacing:.14em;color:var(--red);
  padding-top:5px;
}
.cap-row h3{font-size:1.35rem;line-height:1.35}
.cap-row .cap-body{font-size:15.5px;line-height:1.85;color:var(--ink-soft)}
.cap-row .cap-body .k{color:var(--muted);font-size:13px;letter-spacing:.06em;display:block;margin-top:10px}
.cap-row .arw{
  align-self:center;justify-self:end;color:var(--line);
  font-family:Georgia,serif;font-size:18px;transition:transform .2s ease,color .2s ease;
}
.cap-row:hover .arw{transform:translateX(5px);color:var(--red)}

/* ---------- flow ---------- */
.flow-band{background:var(--card);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.flow-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:0}
.flow-item{
  padding:34px 22px 34px 0;position:relative;
}
.flow-item::before{
  content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--line);
}
.flow-item:first-child::before{background:var(--red)}
.flow-item .fnum{
  font-family:Georgia,serif;font-size:13px;letter-spacing:.16em;color:var(--red);display:block;margin-bottom:14px;
}
.flow-item h3{font-size:1.08rem;line-height:1.4;margin-bottom:10px}
.flow-item p{font-size:14px;line-height:1.8;color:var(--muted)}
.flow-item + .flow-item{padding-left:24px;border-left:1px solid var(--line)}

/* ---------- support ---------- */
.support-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.support-figure{border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden}
.support-figure img{width:100%;height:360px;object-fit:cover}
.support-list li{
  display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--line);
}
.support-list li:first-child{padding-top:0}
.support-list li:last-child{border-bottom:none;padding-bottom:0}
.support-list b{
  font-family:Georgia,serif;font-size:13px;letter-spacing:.14em;color:var(--red);min-width:34px;
}
.support-list h3{font-size:1.1rem;margin-bottom:6px}
.support-list p{font-size:14.5px;line-height:1.8;color:var(--muted)}

/* ---------- price cta ---------- */
.price-cta{
  background:var(--dark);color:var(--paper);border-radius:var(--r-card);
  padding:56px;display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:center;
}
.price-cta h2{color:var(--paper);font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.2}
.price-cta p{margin-top:16px;color:rgba(244,240,231,.72);font-size:15.5px;line-height:1.85;max-width:560px}
.price-cta .cta-side{display:flex;flex-direction:column;align-items:flex-start;gap:16px}
.btn-light{
  display:inline-flex;align-items:center;gap:10px;justify-content:center;
  height:48px;padding:0 26px;border-radius:var(--r-btn);
  background:var(--paper);color:var(--ink);border:1px solid var(--paper);
  font-size:14px;letter-spacing:.08em;transition:background .22s ease,color .22s ease,border-color .22s ease;
}
.btn-light:hover{background:var(--red);border-color:var(--red);color:#fff}
.price-cta .note{font-size:12.5px;letter-spacing:.06em;color:rgba(244,240,231,.55)}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:56px}
.faq-left h2{font-size:clamp(1.8rem,3.2vw,2.6rem);line-height:1.18}
.faq-left p{margin-top:18px;color:var(--muted);font-size:15.5px;line-height:1.85;max-width:360px}
.faq-list{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:20px;
  background:transparent;border:none;text-align:left;
  padding:22px 0;font-family:var(--serif);font-size:17px;color:var(--ink);
  cursor:pointer;transition:color .2s ease;
}
.faq-q:hover{color:var(--red)}
.faq-q .ico{
  font-family:Georgia,serif;font-size:20px;color:var(--red);line-height:1;transition:transform .2s ease;
}
.faq-item.open .faq-q{color:var(--red)}
.faq-item.open .ico{transform:rotate(45deg)}
.faq-a{
  display:none;padding:0 0 24px;font-size:16px;line-height:1.85;color:var(--ink-soft);
}
.faq-item.open .faq-a{display:block}
.faq-item.open{border-left:2px solid var(--red);padding-left:18px;margin-left:-20px}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--paper);margin-top:0;padding:72px 0 28px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1.2fr 1fr;gap:40px}
.footer-brand .brand-main{color:var(--paper);font-size:28px;display:block}
.footer-brand .brand-sub{color:rgba(244,240,231,.55);display:block;margin-top:8px}
.footer-brand p{margin-top:20px;font-size:14px;line-height:1.85;color:rgba(244,240,231,.62);max-width:320px}
.footer-col h4{
  font-family:var(--sans);font-size:12px;letter-spacing:.18em;font-weight:500;
  color:rgba(244,240,231,.5);margin-bottom:20px;
}
.footer-col a,.footer-col span{
  display:block;font-size:14px;line-height:1.7;color:rgba(244,240,231,.78);
  margin-bottom:12px;transition:color .2s ease;
}
.footer-col a:hover{color:var(--red-hover)}
.footer-bottom{
  margin-top:52px;padding-top:22px;border-top:1px solid rgba(244,240,231,.14);
  display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;align-items:center;
  font-size:12.5px;letter-spacing:.04em;color:rgba(244,240,231,.5);
}
.back-top{color:rgba(244,240,231,.7);font-size:12.5px;letter-spacing:.08em}
.back-top:hover{color:var(--red-hover)}

/* ---------- motion ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .36s ease,transform .36s ease}
.reveal.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1199.98px){
  :root{--space-sec:80px}
  .cat-hero{padding:56px 0 64px}
  .cat-hero .hero-grid{gap:40px}
  .hero-figure .frame img{height:360px}
  .cap-row{grid-template-columns:64px 1fr 1.15fr 32px;gap:24px}
}
@media (max-width:991.98px){
  .header-inner{grid-template-columns:auto 1fr auto;height:64px;gap:12px}
  .nav-side{display:none}
  .nav-toggle{display:inline-flex}
  .mobile-contact{display:inline-block}
  .brand-main{font-size:22px}
  .brand-sub{font-size:10px;margin-top:6px}
  .cat-hero .hero-grid{grid-template-columns:1fr;gap:40px}
  .hero-figure .frame img{height:300px}
  .support-grid{grid-template-columns:1fr;gap:36px}
  .support-figure img{height:280px}
  .faq-grid{grid-template-columns:1fr;gap:32px}
  .flow-grid{grid-template-columns:repeat(2,1fr)}
  .flow-item{padding:26px 18px 26px 0}
  .flow-item + .flow-item{padding-left:0;border-left:none}
  .flow-item:nth-child(even){padding-left:22px;border-left:1px solid var(--line)}
  .flow-item::before{background:var(--line)}
  .price-cta{grid-template-columns:1fr;padding:40px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px}
}
@media (max-width:767.98px){
  :root{--space-sec:60px}
  body{font-size:16px}
  .container{padding:0 18px}
  .cat-hero{padding:44px 0 52px}
  .cat-hero h1{font-size:clamp(1.9rem,7.4vw,2.6rem)}
  .hero-lead{font-size:16px;margin-top:18px}
  .hero-actions{gap:16px;margin-top:26px}
  .btn-main{width:100%;justify-content:center}
  .hero-figure .corner{left:0;bottom:-10px;padding:10px 14px}
  .sec-head{margin-bottom:32px}
  .sec-head h2{font-size:clamp(1.5rem,6vw,2rem)}
  .cap-row{grid-template-columns:1fr;gap:12px;padding:26px 0}
  .cap-row .num{padding-top:0}
  .cap-row .arw{display:none}
  .cap-row:hover{padding-left:0;background:transparent}
  .flow-grid{grid-template-columns:1fr}
  .flow-item{padding:22px 0;border-left:none}
  .flow-item:nth-child(even){padding-left:0;border-left:none}
  .price-cta{padding:28px;border-radius:var(--r-card)}
  .btn-light{width:100%;justify-content:center}
  .faq-item.open{padding-left:14px;margin-left:-14px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{padding:52px 0 24px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:10px}
  table.matrix{min-width:640px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: article */
:root{
  --ink:#1B1A17;
  --ink-soft:#2C2A26;
  --red:#8B2E3C;
  --red-hover:#A63E4A;
  --olive:#5E6654;
  --paper:#F4F0E7;
  --card:#FCFAF5;
  --line:#D7CDBD;
  --line-strong:#C0B4A0;
  --muted:#756F66;
  --dark:#171613;
  --radius-btn:2px;
  --radius-card:4px;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --container:1240px;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-style:none;}
a{color:var(--ink);text-decoration:none;transition:color .18s ease;}
a:hover{color:var(--red);}
h1,h2,h3,h4{margin:0;font-weight:600;}
p{margin:0;}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.header-inner{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  height:78px;
}
.nav-group{display:flex;align-items:center;gap:30px;}
.nav-group.right{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:14px;
  letter-spacing:.08em;
  color:var(--ink);
  padding:6px 2px;
  white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--red);transition:width .26s ease;
}
.nav-link:hover{color:var(--red);}
.nav-link:hover::after{width:100%;}
.nav-link.is-active{color:var(--red);}
.nav-link.is-active::after{width:100%;}
.brand{
  display:flex;flex-direction:column;align-items:center;
  line-height:1;padding:0 26px;
}
.brand-main{
  font-family:var(--serif);
  font-size:23px;
  letter-spacing:.3em;
  text-indent:.3em;
  color:var(--ink);
  transition:color .18s ease;
}
.brand-sub{
  font-size:10px;
  letter-spacing:.34em;
  text-indent:.34em;
  color:var(--muted);
  margin-top:7px;
}
.brand:hover .brand-main{color:var(--red);}

.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 20px;
  border:1px solid var(--ink);
  border-radius:var(--radius-btn);
  font-size:13.5px;letter-spacing:.08em;color:var(--ink);
  background:transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}

.nav-toggle{
  display:none;
  align-items:center;justify-content:center;
  width:40px;height:40px;
  background:transparent;border:1px solid var(--line-strong);
  border-radius:var(--radius-btn);cursor:pointer;padding:0;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--ink);position:relative;}
.nav-toggle span::before,
.nav-toggle span::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--ink);
}
.nav-toggle span::before{top:-5px;}
.nav-toggle span::after{top:5px;}
.mobile-cta{display:none;font-size:14px;letter-spacing:.08em;color:var(--ink);text-align:right;justify-self:end;}
.mobile-panel{display:none;border-top:1px solid var(--line);background:var(--paper);}
.mobile-panel .container{padding-top:8px;padding-bottom:24px;}
.mobile-panel a{
  display:block;padding:16px 0;
  border-bottom:1px solid var(--line);
  font-family:var(--serif);font-size:20px;color:var(--ink);
}
.mobile-panel a:hover{color:var(--red);}
.mobile-panel .btn-ink{margin-top:20px;width:100%;}
.site-header.menu-open .mobile-panel{display:block;}

/* ---------- Buttons ---------- */
.btn-ink{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 24px;
  background:var(--ink);color:var(--paper);
  border:1px solid var(--ink);border-radius:var(--radius-btn);
  font-size:14px;letter-spacing:.08em;
  transition:background .2s ease,border-color .2s ease,color .2s ease;
}
.btn-ink:hover{background:var(--red);border-color:var(--red);color:#fff;}
.btn-ink .arrow{transition:transform .2s ease;display:inline-block;}
.btn-ink:hover .arrow{transform:translateX(3px);}
.btn-line{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 24px;
  background:transparent;color:var(--ink);
  border:1px solid var(--ink);border-radius:var(--radius-btn);
  font-size:14px;letter-spacing:.08em;
  transition:background .2s ease,color .2s ease;
}
.btn-line:hover{background:var(--ink);color:var(--paper);}

/* ---------- Breadcrumb ---------- */
.crumb-wrap{padding-top:26px;}
.crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12.5px;letter-spacing:.06em;color:var(--muted);
}
.crumb a{color:var(--muted);}
.crumb a:hover{color:var(--red);}
.crumb .sep{color:var(--line-strong);}
.crumb .current{color:var(--ink);}

/* ---------- Article head ---------- */
.article-head{max-width:900px;padding:34px 0 0;}
.tag-badge{
  display:inline-block;padding:5px 12px;
  border:1px solid var(--line-strong);border-radius:2px;
  font-size:12px;letter-spacing:.1em;color:var(--olive);
  background:rgba(94,102,84,.06);
}
.article-head h1{
  font-family:var(--serif);
  font-size:clamp(1.9rem,4vw,3.1rem);
  line-height:1.26;
  letter-spacing:-.005em;
  margin-top:20px;
  color:var(--ink);
  word-break:break-word;
}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin-top:22px;font-size:13px;letter-spacing:.06em;color:var(--muted);
}
.meta-row .dot{width:3px;height:3px;border-radius:50%;background:var(--line-strong);}
.rule-line{height:1px;background:var(--line);margin-top:32px;}

/* ---------- Article layout ---------- */
.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) 280px;
  gap:64px;
  align-items:start;
  padding:44px 0 0;
}
.article-body{
  max-width:800px;
  font-size:18px;
  line-height:1.9;
  color:#2A2823;
  word-break:break-word;
}
.article-body p{margin:0 0 1.3em;}
.article-body h2{
  font-family:var(--serif);
  font-size:clamp(1.35rem,2.2vw,1.75rem);
  line-height:1.4;
  color:var(--ink);
  margin:56px 0 20px;
  padding-top:22px;
  border-top:1px solid var(--line);
}
.article-body h2:first-child{margin-top:0;padding-top:0;border-top:0;}
.article-body h3{
  font-family:var(--serif);
  font-size:1.24rem;
  line-height:1.5;
  color:var(--ink);
  margin:36px 0 14px;
}
.article-body ul,
.article-body ol{margin:0 0 1.3em;padding-left:1.2em;}
.article-body li{margin:.4em 0;}
.article-body ul{list-style:none;padding-left:1.1em;}
.article-body ul li{position:relative;}
.article-body ul li::before{
  content:"";position:absolute;left:-1em;top:.82em;
  width:6px;height:6px;background:var(--red);
}
.article-body blockquote{
  margin:32px 0;padding:4px 0 4px 22px;
  border-left:3px solid var(--red);
  font-family:var(--serif);
  font-size:1.08rem;
  color:var(--ink-soft);
  background:transparent;
}
.article-body blockquote p:last-child{margin-bottom:0;}
.article-body img{width:100%;border-radius:2px;margin:28px 0;}
.article-body figure{margin:28px 0;}
.article-body figcaption{font-size:13px;color:var(--muted);margin-top:10px;letter-spacing:.04em;}
.article-body a{color:var(--red);text-decoration:underline;text-underline-offset:4px;}
.article-body a:hover{color:var(--red-hover);}
.article-body table{
  width:100%;border-collapse:collapse;
  font-size:15.5px;margin:26px 0;
}
.article-body th,
.article-body td{
  border-bottom:1px solid var(--line);
  padding:14px 16px;text-align:left;vertical-align:top;
}
.article-body th{font-size:12.5px;letter-spacing:.08em;color:var(--muted);font-weight:600;}
.article-body strong{font-weight:600;color:var(--ink);}
.article-body hr{border:0;border-top:1px solid var(--line);margin:44px 0;}

.empty-state{
  padding:56px 32px;
  border:1px dashed var(--line-strong);
  border-radius:var(--radius-card);
  background:var(--card);
  text-align:center;
}
.empty-state h2{font-family:var(--serif);font-size:1.4rem;margin:0 0 12px;padding:0;border:0;}
.empty-state p{font-size:15px;color:var(--muted);margin:0 0 24px;line-height:1.8;}

/* ---------- Article foot ---------- */
.article-foot{
  max-width:800px;
  margin-top:48px;padding-top:26px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:18px;
  align-items:center;justify-content:space-between;
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px;}
.tag-list a{
  font-size:12.5px;letter-spacing:.06em;
  padding:5px 11px;border:1px solid var(--line-strong);
  border-radius:2px;color:var(--muted);
  transition:border-color .18s ease,color .18s ease,background .18s ease;
}
.tag-list a:hover{border-color:var(--red);color:var(--red);background:rgba(139,46,60,.04);}
.text-actions{display:flex;gap:22px;font-size:13.5px;letter-spacing:.06em;color:var(--muted);}
.text-actions button,
.text-actions a{
  background:none;border:0;padding:0;cursor:pointer;
  font:inherit;color:var(--muted);letter-spacing:inherit;
  border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease;
}
.text-actions button:hover,
.text-actions a:hover{color:var(--red);border-bottom-color:var(--red);}
.source-note{
  max-width:800px;margin-top:22px;
  font-size:13px;color:var(--muted);letter-spacing:.04em;line-height:1.8;
}

/* ---------- Sidebar ---------- */
.article-side{
  position:sticky;top:104px;
  display:flex;flex-direction:column;gap:22px;
}
.side-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:22px;
}
.side-card h3{
  font-family:var(--sans);
  font-size:12px;font-weight:600;
  letter-spacing:.16em;color:var(--muted);
  margin-bottom:16px;
}
.toc-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;}
.toc-list a{
  display:block;
  font-size:14px;line-height:1.6;color:var(--ink-soft);
  padding:7px 0 7px 12px;
  border-left:1px solid var(--line);
  transition:color .18s ease,border-color .18s ease,padding-left .18s ease;
}
.toc-list a:hover{color:var(--red);border-left-color:var(--red);padding-left:15px;}
.side-meta{display:flex;flex-direction:column;gap:11px;font-size:13.5px;color:var(--ink-soft);}
.side-meta .k{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:12.5px;letter-spacing:.06em;}
.side-meta .k b{color:var(--ink);font-weight:600;}
.side-cta{background:var(--dark);border-color:var(--dark);}
.side-cta h3{color:rgba(244,240,231,.55);}
.side-cta p{font-size:14px;line-height:1.8;color:rgba(244,240,231,.75);margin-bottom:18px;}
.side-cta .btn-ink{
  width:100%;height:44px;
  background:var(--paper);color:var(--ink);border-color:var(--paper);
}
.side-cta .btn-ink:hover{background:var(--red);border-color:var(--red);color:#fff;}

/* ---------- Related ---------- */
.related{padding:76px 0 0;}
.section-head{
  display:flex;flex-wrap:wrap;justify-content:space-between;
  align-items:flex-end;gap:20px;
  border-bottom:1px solid var(--line);
  padding-bottom:18px;margin-bottom:32px;
}
.section-head h2{
  font-family:var(--serif);
  font-size:clamp(1.45rem,2.6vw,2rem);
  line-height:1.3;color:var(--ink);
}
.section-head .link-more{
  font-size:13.5px;letter-spacing:.08em;color:var(--muted);
  border-bottom:1px solid var(--line-strong);padding-bottom:2px;
  text-underline-offset:4px;transition:color .18s ease,border-color .18s ease;
}
.section-head .link-more:hover{color:var(--red);border-bottom-color:var(--red);}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
.post-card{
  display:flex;flex-direction:column;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  transition:transform .24s ease,box-shadow .24s ease,border-color .24s ease;
}
.post-card:hover{
  transform:translateY(-2px);
  border-color:var(--line-strong);
  box-shadow:0 12px 30px rgba(27,26,23,.08);
}
.post-card .thumb{aspect-ratio:16/10;overflow:hidden;background:#E7E0D3;}
.post-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease;}
.post-card:hover .thumb img{transform:scale(1.03);}
.post-card .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1;}
.post-card .chip{
  align-self:flex-start;
  font-size:11.5px;letter-spacing:.1em;
  color:var(--olive);
  border:1px solid var(--line-strong);
  border-radius:2px;padding:3px 9px;
  background:rgba(94,102,84,.06);
}
.post-card h3{
  font-family:var(--serif);
  font-size:1.08rem;line-height:1.5;color:var(--ink);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card p{
  font-size:14px;line-height:1.75;color:var(--muted);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .meta{
  display:flex;justify-content:space-between;gap:12px;
  margin-top:auto;padding-top:10px;
  font-size:12px;letter-spacing:.06em;color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-band{background:var(--dark);color:var(--paper);padding:66px 0;margin-top:84px;}
.cta-inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:32px;}
.cta-inner h2{
  font-family:var(--serif);
  font-size:clamp(1.5rem,3vw,2.15rem);
  line-height:1.3;color:var(--paper);margin-bottom:12px;
}
.cta-inner p{font-size:15.5px;line-height:1.8;color:rgba(244,240,231,.7);max-width:560px;}
.cta-band .btn-ink{background:var(--paper);color:var(--ink);border-color:var(--paper);}
.cta-band .btn-ink:hover{background:var(--red);border-color:var(--red);color:#fff;}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:var(--paper);padding:64px 0 0;}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:40px;padding-bottom:48px;
}
.footer-brand .brand-main{display:block;color:var(--paper);letter-spacing:.3em;}
.footer-brand .brand-sub{display:block;color:rgba(244,240,231,.55);margin-top:9px;}
.footer-brand p{
  margin-top:18px;font-size:14px;line-height:1.8;
  color:rgba(244,240,231,.62);max-width:320px;
}
.footer-col h4{
  font-family:var(--sans);font-size:12.5px;font-weight:600;
  letter-spacing:.14em;color:rgba(244,240,231,.5);margin-bottom:16px;
}
.footer-col a,
.footer-col span{
  display:block;font-size:14px;line-height:1.7;
  color:rgba(244,240,231,.78);margin-bottom:11px;
  transition:color .18s ease;
}
.footer-col a:hover{color:var(--red-hover);}
.footer-bottom{
  border-top:1px solid rgba(244,240,231,.14);
  padding:22px 0;
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:12.5px;letter-spacing:.04em;color:rgba(244,240,231,.5);
}
.back-top{color:rgba(244,240,231,.7);}
.back-top:hover{color:var(--red-hover);}

/* ---------- Motion ---------- */
.reveal{opacity:0;transform:translateY(8px);animation:riseIn .5s ease forwards;}
.reveal.d1{animation-delay:.06s;}
.reveal.d2{animation-delay:.12s;}
@keyframes riseIn{to{opacity:1;transform:none;}}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  .article-layout{grid-template-columns:minmax(0,1fr);gap:48px;}
  .article-side{position:static;max-width:800px;display:grid;grid-template-columns:1fr 1fr;gap:22px;}
  .article-side .side-cta{grid-column:1 / -1;}
}
@media (max-width:991.98px){
  .header-inner{grid-template-columns:44px 1fr auto;height:64px;}
  .nav-group{display:none;}
  .nav-toggle{display:inline-flex;}
  .mobile-cta{display:block;}
  .brand{padding:0 12px;}
  .brand-main{font-size:19px;letter-spacing:.26em;text-indent:.26em;}
  .brand-sub{font-size:9px;letter-spacing:.26em;text-indent:.26em;}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:34px;}
  .cta-band{margin-top:68px;padding:56px 0;}
}
@media (max-width:767.98px){
  body{font-size:16px;}
  .container{padding:0 20px;}
  .article-body{font-size:16.5px;line-height:1.9;}
  .article-layout{padding-top:34px;}
  .article-head{padding-top:26px;}
  .article-side{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .related{padding-top:58px;}
  .article-foot{flex-direction:column;align-items:flex-start;}
  .article-body table{display:block;overflow-x:auto;white-space:nowrap;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-band .btn-ink{width:100%;}
  .article-body h2{margin-top:44px;}
  .meta-row{gap:10px;font-size:12.5px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important;}
  .post-card:hover{transform:none;box-shadow:none;}
  .post-card:hover .thumb img{transform:none;}
  .btn-ink:hover .arrow{transform:none;}
  .toc-list a:hover{padding-left:12px;}
}

/* roulang page: category2 */
:root{
  --ink:#1B1A17;
  --ink-soft:#2C2A25;
  --paper:#F4F0E7;
  --paper-2:#EDE7DA;
  --card:#FCFAF5;
  --red:#8B2E3C;
  --red-hover:#A63E4A;
  --olive:#5E6654;
  --line:#D7CDBD;
  --line-strong:#C3B7A3;
  --muted:#756F66;
  --dark:#171613;
  --radius-btn:2px;
  --radius-card:4px;
  --shadow-card:0 12px 30px rgba(27,26,23,.08);
  --serif:'Noto Serif SC','Source Han Serif SC','Songti SC','SimSun',serif;
  --sans:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --latin:Georgia,'Times New Roman',serif;
  --space-section:96px;
  --tr:220ms;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;height:auto;}
a{color:var(--ink);text-decoration:none;transition:color var(--tr) ease,border-color var(--tr) ease;}
a:hover{color:var(--red);}
ul,ol{margin:0;padding:0;list-style:none;}
p{margin:0 0 1.1em;}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;color:var(--ink);letter-spacing:.01em;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;}

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

/* ---------- Header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:1040;
  background:rgba(244,240,231,.96);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(120%) blur(6px);
}
.nav-wrap{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  min-height:80px;
  gap:18px;
}
.nav-side{display:flex;align-items:center;gap:30px;}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:14px;
  letter-spacing:.07em;
  color:var(--ink);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;bottom:0;
  width:0;height:2px;
  background:var(--red);
  transition:width var(--tr) ease;
}
.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.active::after{width:100%;}
.nav-link.active{color:var(--red);}
.nav-cta{
  display:inline-flex;
  align-items:center;
  gap:8px;
  border:1px solid var(--ink);
  border-radius:var(--radius-btn);
  padding:10px 18px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--ink);
  transition:background var(--tr) ease,color var(--tr) ease,border-color var(--tr) ease;
}
.nav-cta:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.brand{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  line-height:1;
  text-align:center;
  padding:0 10px;
}
.brand-main{
  font-family:var(--serif);
  font-size:25px;
  letter-spacing:.2em;
  color:var(--ink);
  text-indent:.2em;
}
.brand-sub{
  margin-top:7px;
  font-size:10px;
  letter-spacing:.3em;
  color:var(--muted);
  text-indent:.3em;
}
.brand:hover .brand-main{color:var(--red);}
.nav-toggle{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line-strong);
  border-radius:2px;
  background:transparent;
  color:var(--ink);
  font-size:16px;
  align-items:center;
  justify-content:center;
}
.mobile-nav{
  border-top:1px solid var(--line);
  padding:8px 0 22px;
}
.mobile-nav a{
  display:block;
  padding:14px 2px;
  border-bottom:1px solid var(--line);
  font-family:var(--serif);
  font-size:17px;
  letter-spacing:.04em;
}
.mobile-nav a.active{color:var(--red);}
.mobile-nav .mobile-cta{
  display:inline-flex;
  margin-top:20px;
  border:1px solid var(--ink);
  border-radius:2px;
  padding:12px 22px;
  font-family:var(--sans);
  font-size:14px;
  letter-spacing:.08em;
  border-bottom:1px solid var(--ink);
}
.mobile-nav .mobile-cta:hover{background:var(--ink);color:var(--paper);}
.mobile-call{display:none;font-size:12px;letter-spacing:.06em;color:var(--muted);}

/* ---------- Shared bits ---------- */
.eyebrow{
  display:inline-block;
  font-size:12px;
  letter-spacing:.18em;
  color:var(--olive);
  text-transform:uppercase;
}
.section{padding:var(--space-section) 0;}
.section-tight{padding:72px 0;}
.section-line{border-top:1px solid var(--line);}
.section-head{max-width:720px;margin-bottom:44px;}
.section-head h2{
  font-size:clamp(1.8rem,3.6vw,3rem);
  line-height:1.18;
  margin:14px 0 16px;
}
.section-head p{color:var(--muted);font-size:17px;margin:0;}
.lead{font-size:18px;line-height:1.9;color:var(--ink-soft);}

.btn-ink,.btn-outline-ink{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:14px;
  letter-spacing:.08em;
  cursor:pointer;
  transition:background var(--tr) ease,color var(--tr) ease,border-color var(--tr) ease,transform var(--tr) ease;
}
.btn-ink{
  background:var(--ink);
  color:var(--paper);
  border:1px solid var(--ink);
}
.btn-ink:hover{background:var(--red);border-color:var(--red);color:#fff;}
.btn-ink .arrow{transition:transform var(--tr) ease;display:inline-block;}
.btn-ink:hover .arrow{transform:translateX(3px);}
.btn-outline-ink{
  background:transparent;
  color:var(--ink);
  border:1px solid var(--ink);
}
.btn-outline-ink:hover{background:var(--ink);color:var(--paper);}
.btn-paper{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  height:48px;padding:0 24px;border-radius:2px;
  background:var(--paper);color:var(--ink);border:1px solid var(--paper);
  font-size:14px;letter-spacing:.08em;
  transition:background var(--tr) ease,color var(--tr) ease;
}
.btn-paper:hover{background:var(--red);border-color:var(--red);color:#fff;}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  border:1px solid var(--line-strong);
  border-radius:2px;
  padding:5px 10px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--olive);
  background:transparent;
}
.tag-red{border-color:rgba(139,46,60,.45);color:var(--red);background:rgba(139,46,60,.06);}

.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--muted);
  margin-bottom:26px;
}
.crumbs a{color:var(--muted);border-bottom:1px solid transparent;}
.crumbs a:hover{color:var(--red);border-bottom-color:var(--red);}
.crumbs .sep{color:var(--line-strong);}
.crumbs .current{color:var(--ink);}

/* ---------- Hero ---------- */
.hero{padding:56px 0 76px;}
.hero-grid{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:56px;
  align-items:center;
}
.hero h1{
  font-size:clamp(2.2rem,4.6vw,3.9rem);
  line-height:1.12;
  letter-spacing:-.01em;
  margin:14px 0 22px;
}
.hero h1 em{font-style:normal;color:var(--red);}
.hero .lead{max-width:34em;}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.hero-meta{
  display:flex;flex-wrap:wrap;gap:26px;
  margin-top:34px;padding-top:22px;
  border-top:1px solid var(--line);
}
.hero-meta div{font-size:12.5px;letter-spacing:.06em;color:var(--muted);}
.hero-meta strong{
  display:block;
  font-family:var(--latin);
  font-size:22px;
  letter-spacing:.02em;
  color:var(--ink);
  font-weight:400;
}
.filter-tags{
  display:flex;flex-wrap:wrap;gap:10px;
  margin-top:30px;
}
.filter-tags span{
  border:1px solid var(--line-strong);
  border-radius:2px;
  padding:7px 14px;
  font-size:12.5px;
  letter-spacing:.07em;
  color:var(--muted);
  cursor:default;
  transition:all var(--tr) ease;
}
.filter-tags span.on{background:var(--ink);border-color:var(--ink);color:var(--paper);}
.hero-figure{
  position:relative;
  margin:0;
  border:1px solid var(--line);
  background:var(--card);
}
.hero-figure img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
}
.hero-figure figcaption{
  position:absolute;
  left:0;bottom:0;
  display:flex;align-items:center;gap:10px;
  background:var(--paper);
  border-top:1px solid var(--line);
  border-right:1px solid var(--line);
  padding:10px 16px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
}
.hero-figure figcaption b{font-family:var(--latin);font-size:14px;color:var(--red);font-weight:400;}

/* ---------- Overview cards ---------- */
.overview-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.overview-card{
  position:relative;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:32px 26px 28px;
  transition:transform var(--tr) ease,box-shadow var(--tr) ease,border-color var(--tr) ease;
}
.overview-card::before{
  content:"";
  position:absolute;left:0;right:0;top:0;height:2px;
  background:var(--red);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform var(--tr) ease;
}
.overview-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-card);border-color:var(--line-strong);}
.overview-card:hover::before{transform:scaleX(1);}
.overview-num{
  font-family:var(--latin);
  font-size:13px;
  letter-spacing:.18em;
  color:var(--red);
  display:block;
  margin-bottom:18px;
}
.overview-card h3{font-size:1.35rem;margin-bottom:10px;}
.overview-card p{color:var(--muted);font-size:15.5px;margin-bottom:16px;}
.overview-card .mini-list li{
  font-size:14px;
  color:var(--ink-soft);
  padding-left:16px;
  position:relative;
  line-height:1.9;
}
.overview-card .mini-list li::before{
  content:"";
  position:absolute;left:0;top:.78em;
  width:6px;height:1px;background:var(--olive);
}

/* ---------- Scene blocks ---------- */
.scene{
  display:grid;
  grid-template-columns:5fr 7fr;
  gap:56px;
  align-items:center;
  padding-top:64px;
  margin-top:64px;
  border-top:1px solid var(--line);
}
.scene:first-of-type{margin-top:0;}
.scene.reverse{grid-template-columns:7fr 5fr;}
.scene.reverse .scene-media{order:2;}
.scene.reverse .scene-body{order:1;}
.scene-media{position:relative;}
.scene-media img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  border:1px solid var(--line);
  border-radius:2px;
  transition:transform 320ms ease;
}
.scene-media:hover img{transform:scale(1.02);}
.scene-index{
  position:absolute;
  top:-1px;left:-1px;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--latin);
  font-size:13px;
  letter-spacing:.16em;
  padding:8px 14px;
}
.scene-body .scene-label{
  font-size:12px;letter-spacing:.16em;color:var(--olive);
  display:block;margin-bottom:14px;
}
.scene-body h3{
  font-size:clamp(1.5rem,2.4vw,2rem);
  line-height:1.25;
  margin-bottom:14px;
}
.scene-body p{color:var(--ink-soft);font-size:16.5px;}
.scene-points{margin-top:22px;border-top:1px solid var(--line);}
.scene-points li{
  display:grid;
  grid-template-columns:22px 1fr;
  gap:12px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  font-size:15.5px;
  color:var(--ink-soft);
}
.scene-points li span{
  font-family:var(--latin);
  color:var(--red);
  font-size:13px;
  letter-spacing:.1em;
  padding-top:2px;
}
.scene-link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:24px;
  font-size:14px;letter-spacing:.06em;
  border-bottom:1px solid var(--ink);
  padding-bottom:3px;
}
.scene-link:hover{border-bottom-color:var(--red);}
.scene-link .arrow{transition:transform var(--tr) ease;}
.scene-link:hover .arrow{transform:translateX(3px);}

/* ---------- Testimonial ---------- */
.testimonial{
  background:var(--card);
  border:1px solid var(--line);
  border-left:3px solid var(--red);
  border-radius:var(--radius-card);
  padding:44px 48px;
}
.testimonial blockquote{
  margin:0;
  font-family:var(--serif);
  font-size:clamp(1.15rem,2.1vw,1.6rem);
  line-height:1.65;
  color:var(--ink);
}
.testimonial .who{
  margin-top:22px;
  font-size:13px;
  letter-spacing:.1em;
  color:var(--muted);
}
.testimonial .who b{color:var(--olive);font-weight:500;}

/* ---------- Steps ---------- */
.steps{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  counter-reset:step;
}
.step{
  border-top:1px solid var(--line-strong);
  padding-top:22px;
}
.step .num{
  font-family:var(--latin);
  font-size:30px;
  color:var(--red);
  letter-spacing:.04em;
  display:block;
  line-height:1;
  margin-bottom:16px;
}
.step h3{font-size:1.15rem;margin-bottom:10px;}
.step p{font-size:14.5px;color:var(--muted);margin:0;line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-grid{
  display:grid;
  grid-template-columns:4fr 8fr;
  gap:56px;
  align-items:start;
}
.faq-grid h2{font-size:clamp(1.8rem,3.2vw,2.6rem);line-height:1.2;margin-bottom:16px;}
.faq-grid .faq-note{color:var(--muted);font-size:15.5px;}
.faq-side-link{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:22px;font-size:14px;letter-spacing:.06em;
  border-bottom:1px solid var(--ink);padding-bottom:3px;
}
.accordion-item{
  background:transparent;
  border:0;
  border-bottom:1px solid var(--line);
  border-radius:0;
}
.accordion-item:first-of-type{border-top:1px solid var(--line);}
.accordion-button{
  background:transparent;
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  font-weight:600;
  letter-spacing:.01em;
  padding:22px 40px 22px 0;
  box-shadow:none;
  border-radius:0;
  line-height:1.6;
}
.accordion-button:not(.collapsed){
  background:transparent;
  color:var(--red);
  box-shadow:none;
}
.accordion-button:focus{box-shadow:none;border-color:transparent;}
.accordion-button::after{
  background-image:none;
  content:"+";
  width:22px;height:22px;
  font-size:22px;
  font-weight:400;
  color:var(--muted);
  display:flex;
  align-items:center;
  justify-content:center;
  transition:color var(--tr) ease;
}
.accordion-button:not(.collapsed)::after{content:"−";color:var(--red);transform:none;}
.accordion-button:hover{color:var(--red);}
.accordion-body{
  padding:0 40px 26px 0;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--dark);
  color:var(--paper);
  border-top:1px solid #2c2a25;
}
.cta-inner{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:44px;
  align-items:center;
  padding:72px 0;
}
.cta-inner h2{
  color:var(--paper);
  font-size:clamp(1.7rem,3.2vw,2.6rem);
  line-height:1.22;
  margin-bottom:14px;
}
.cta-inner p{color:#BDB6A9;margin:0;font-size:16px;max-width:36em;}
.cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.cta-actions .btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;
  height:48px;padding:0 24px;border-radius:2px;
  border:1px solid #4a463d;color:var(--paper);font-size:14px;letter-spacing:.08em;
  transition:border-color var(--tr) ease,color var(--tr) ease,background var(--tr) ease;
}
.cta-actions .btn-ghost:hover{border-color:var(--paper);background:#221f1b;color:#fff;}

/* ---------- Footer ---------- */
.site-footer{
  background:var(--dark);
  color:var(--paper);
  padding:70px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.6fr 1fr 1.2fr 1.2fr;
  gap:40px;
  padding-bottom:44px;
  border-bottom:1px solid #302d26;
}
.footer-brand .brand-main{
  font-family:var(--serif);
  font-size:26px;
  letter-spacing:.2em;
  color:var(--paper);
  display:block;
}
.footer-brand .brand-sub{
  display:block;
  margin-top:8px;
  font-size:10px;
  letter-spacing:.3em;
  color:#9c9488;
}
.footer-brand p{
  margin-top:20px;
  font-size:14px;
  line-height:1.85;
  color:#B0A896;
  max-width:30em;
}
.footer-col h4{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.16em;
  color:#9c9488;
  font-weight:500;
  margin-bottom:18px;
}
.footer-col a,.footer-col span{
  display:block;
  font-size:14px;
  color:#D9D2C4;
  padding:6px 0;
  line-height:1.7;
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  gap:14px;
  align-items:center;
  justify-content:space-between;
  padding-top:22px;
  font-size:12.5px;
  color:#8f887b;
  letter-spacing:.04em;
}
.back-top{
  color:#D9D2C4;
  font-size:12.5px;
  letter-spacing:.08em;
  border-bottom:1px solid transparent;
}
.back-top:hover{color:#fff;border-bottom-color:#fff;}

/* ---------- Reveal ---------- */
.js .reveal{opacity:0;transform:translateY(8px);transition:opacity 360ms ease,transform 360ms ease;}
.js .reveal.in-view{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1199.98px){
  :root{--space-section:80px;}
  .hero-grid{gap:40px;}
  .scene{gap:40px;}
  .faq-grid{gap:40px;}
}
@media (max-width:991.98px){
  :root{--space-section:64px;}
  .nav-wrap{grid-template-columns:auto 1fr auto;min-height:64px;}
  .nav-side{display:none;}
  .nav-toggle{display:inline-flex;}
  .brand{position:absolute;left:50%;transform:translateX(-50%);}
  .nav-wrap{position:relative;}
  .brand-main{font-size:21px;}
  .brand-sub{font-size:9px;letter-spacing:.24em;margin-top:5px;}
  .mobile-call{display:inline-block;}
  .hero-grid{grid-template-columns:1fr;gap:36px;}
  .hero{padding:38px 0 56px;}
  .hero-meta{gap:18px;}
  .overview-grid{grid-template-columns:1fr;}
  .scene,.scene.reverse{grid-template-columns:1fr;gap:28px;}
  .scene.reverse .scene-media{order:1;}
  .scene.reverse .scene-body{order:2;}
  .scene{padding-top:44px;margin-top:44px;}
  .testimonial{padding:30px 26px;}
  .steps{grid-template-columns:1fr 1fr;gap:32px 24px;}
  .faq-grid{grid-template-columns:1fr;gap:28px;}
  .cta-inner{grid-template-columns:1fr;padding:56px 0;gap:28px;}
  .cta-actions{justify-content:flex-start;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575.98px){
  body{font-size:16px;}
  .container{padding-left:18px;padding-right:18px;}
  .hero h1{font-size:clamp(1.85rem,8vw,2.4rem);}
  .section-head{margin-bottom:30px;}
  .hero-actions{gap:12px;}
  .hero-actions .btn-ink,.hero-actions .btn-outline-ink{width:100%;}
  .steps{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .testimonial blockquote{font-size:1.1rem;}
  .accordion-button{font-size:16px;padding:18px 34px 18px 0;}
  .accordion-body{padding-right:0;font-size:15px;}
  .cta-actions .btn-paper,.cta-actions .btn-ghost{width:100%;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.01ms !important;animation-duration:.01ms !important;}
  .js .reveal{opacity:1;transform:none;}
  .scene-media:hover img{transform:none;}
  .overview-card:hover{transform:none;}
}

/* roulang page: category3 */
:root{
  --ink:#1B1A17;
  --red:#8B2E3C;
  --red-hover:#A63E4A;
  --olive:#5E6654;
  --paper:#F4F0E7;
  --card:#FCFAF5;
  --line:#D7CDBD;
  --muted:#756F66;
  --dark:#171613;
  --serif:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,serif;
  --sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --radius-btn:2px;
  --radius-card:4px;
  --shadow-hover:0 12px 30px rgba(27,26,23,.08);
  --space-section:96px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--red);}
h1,h2,h3,h4{margin:0;font-family:var(--serif);font-weight:600;letter-spacing:-.01em;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;}

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

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:var(--paper);
  border-bottom:1px solid var(--line);
}
.nav-shell{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:24px;
  min-height:78px;
}
.nav-side{display:flex;align-items:center;gap:30px;}
.nav-side.right{justify-content:flex-end;}
.nav-link{
  position:relative;
  font-size:14px;
  letter-spacing:.08em;
  color:var(--ink);
  padding:6px 0;
  white-space:nowrap;
}
.nav-link::after{
  content:"";
  position:absolute;left:0;bottom:0;
  width:0;height:2px;background:var(--red);
  transition:width .26s ease;
}
.nav-link:hover::after,.nav-link.active::after{width:100%;}
.nav-link.active{color:var(--red);}
.brand{
  display:flex;flex-direction:column;align-items:center;
  line-height:1;text-align:center;
}
.brand-main{
  font-family:var(--serif);
  font-size:26px;
  letter-spacing:.28em;
  margin-right:-.28em;
  color:var(--ink);
}
.brand-sub{
  margin-top:7px;
  font-size:11px;
  letter-spacing:.26em;
  color:var(--muted);
}
.nav-cta{
  display:inline-flex;align-items:center;justify-content:center;
  height:40px;padding:0 18px;margin-left:6px;
  border:1px solid var(--ink);
  border-radius:var(--radius-btn);
  font-size:13px;letter-spacing:.08em;color:var(--ink);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.nav-cta:hover{background:var(--ink);color:var(--paper);}
.nav-toggle{
  display:none;
  width:38px;height:38px;
  border:1px solid var(--line);
  background:transparent;
  border-radius:var(--radius-btn);
  align-items:center;justify-content:center;
  flex-direction:column;gap:4px;
}
.nav-toggle span{display:block;width:16px;height:1.5px;background:var(--ink);}
.mobile-panel{
  display:none;
  border-top:1px solid var(--line);
  background:var(--card);
  padding:14px 24px 24px;
}
.mobile-panel.open{display:block;}
.mobile-panel a{
  display:flex;justify-content:space-between;align-items:center;
  padding:15px 0;
  border-bottom:1px solid var(--line);
  font-family:var(--serif);
  font-size:19px;
  color:var(--ink);
}
.mobile-panel a span{font-family:var(--sans);font-size:12px;letter-spacing:.1em;color:var(--muted);}
.mobile-panel .m-cta{
  margin-top:20px;display:flex;justify-content:center;
  background:var(--ink);color:var(--paper);
  height:48px;border-radius:var(--radius-btn);
  font-family:var(--sans);font-size:14px;letter-spacing:.08em;
  border-bottom:0;
}

/* ---------- 通用 ---------- */
.btn-ink,.btn-line{
  display:inline-flex;align-items:center;gap:10px;
  height:48px;padding:0 24px;
  border-radius:var(--radius-btn);
  font-size:14px;letter-spacing:.08em;
  transition:background .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn-ink{background:var(--ink);color:var(--paper);border:1px solid var(--ink);}
.btn-ink:hover{background:var(--red);border-color:var(--red);color:#fff;}
.btn-line{background:transparent;color:var(--ink);border:1px solid var(--ink);}
.btn-line:hover{background:var(--ink);color:var(--paper);}
.btn-ink .arrow,.btn-line .arrow{transition:transform .2s ease;}
.btn-ink:hover .arrow,.btn-line:hover .arrow{transform:translateX(3px);}
.tag{
  display:inline-block;
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:2px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--olive);
  background:transparent;
}
.tag-red{border-color:rgba(139,46,60,.35);color:var(--red);background:rgba(139,46,60,.06);}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:12px;letter-spacing:.16em;color:var(--muted);
  text-transform:uppercase;
}
.eyebrow::before{content:"";display:block;width:28px;height:1px;background:var(--red);}
.section{padding:var(--space-section) 0;}
.section-head{max-width:760px;margin-bottom:48px;}
.section-head h2{
  font-size:clamp(1.8rem,3.6vw,3.2rem);
  line-height:1.15;
  margin-top:16px;
}
.section-head p{margin-top:18px;color:var(--muted);font-size:17px;line-height:1.85;}
.breadcrumb-line{
  padding:22px 0 0;
  font-size:12px;letter-spacing:.08em;color:var(--muted);
}
.breadcrumb-line a{color:var(--muted);}
.breadcrumb-line a:hover{color:var(--red);}
.breadcrumb-line .sep{margin:0 8px;color:var(--line);}
.breadcrumb-line .current{color:var(--ink);}

/* ---------- Hero ---------- */
.hero{padding:44px 0 0;}
.hero-grid{
  display:grid;
  grid-template-columns:6.5fr 5.5fr;
  gap:56px;
  align-items:end;
  padding-bottom:64px;
}
.hero h1{
  font-size:clamp(2.2rem,4.6vw,3.8rem);
  line-height:1.14;
  margin-top:22px;
}
.hero h1 em{font-style:normal;color:var(--red);}
.hero-lead{
  margin-top:24px;
  max-width:520px;
  font-size:18px;
  line-height:1.85;
  color:#3A362F;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px;}
.hero-note{
  margin-top:26px;
  font-size:13px;
  color:var(--muted);
  letter-spacing:.02em;
}
.hero-media{position:relative;}
.hero-media .frame{
  position:relative;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  overflow:hidden;
  background:var(--card);
  aspect-ratio:4/5;
}
.hero-media .frame img{width:100%;height:100%;object-fit:cover;}
.hero-media .corner-tag{
  position:absolute;left:0;bottom:0;
  background:var(--paper);
  border-top:1px solid var(--line);
  border-right:1px solid var(--line);
  padding:10px 16px;
  font-size:12px;letter-spacing:.12em;color:var(--muted);
}
.hero-media .float-card{
  position:absolute;
  right:-18px;top:36px;
  width:150px;
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:16px;
}
.hero-media .float-card strong{
  font-family:var(--serif);font-size:30px;line-height:1;display:block;
}
.hero-media .float-card span{
  display:block;margin-top:8px;font-size:12px;letter-spacing:.06em;color:var(--muted);line-height:1.6;
}

/* ---------- 指标带 ---------- */
.stats-band{background:var(--dark);color:var(--paper);padding:64px 0;}
.stats-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:1px;
  background:rgba(244,240,231,.14);
}
.stat-item{
  background:var(--dark);
  padding:8px 28px 8px 0;
}
.stat-item + .stat-item{padding-left:28px;}
.stat-item .num{
  font-family:var(--serif);
  font-size:clamp(2.2rem,4vw,3.2rem);
  line-height:1;
  letter-spacing:-.01em;
}
.stat-item .num small{font-size:.42em;margin-left:4px;letter-spacing:.06em;color:rgba(244,240,231,.7);}
.stat-item .label{margin-top:14px;font-size:14px;color:rgba(244,240,231,.86);}
.stat-foot{
  margin-top:28px;font-size:12px;letter-spacing:.06em;color:rgba(244,240,231,.5);
}

/* ---------- 案例矩阵 ---------- */
.case-lead{
  display:grid;
  grid-template-columns:7fr 5fr;
  gap:0;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--card);
  overflow:hidden;
  transition:box-shadow .3s ease,transform .3s ease,border-color .3s ease;
}
.case-lead:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#C4B8A4;}
.case-lead .media{overflow:hidden;}
.case-lead .media img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
.case-lead:hover .media img{transform:scale(1.03);}
.case-lead .body{padding:40px;}
.case-lead h3{font-size:1.5rem;line-height:1.35;margin-top:16px;}
.case-lead p{margin-top:14px;color:var(--muted);font-size:16px;line-height:1.8;}
.case-metric-row{display:flex;flex-wrap:wrap;gap:32px;margin-top:26px;padding-top:22px;border-top:1px solid var(--line);}
.case-metric-row .m strong{display:block;font-family:var(--serif);font-size:26px;line-height:1.1;}
.case-metric-row .m span{display:block;margin-top:6px;font-size:12px;color:var(--muted);letter-spacing:.04em;}
.case-rows{margin-top:24px;border-top:1px solid var(--line);}
.case-row{
  display:grid;
  grid-template-columns:60px 1.4fr 1fr 120px 40px;
  align-items:center;
  gap:24px;
  padding:28px 8px;
  border-bottom:1px solid var(--line);
  transition:background .2s ease,padding .2s ease;
}
.case-row:hover{background:var(--card);padding-left:18px;}
.case-row .idx{font-family:var(--serif);font-size:15px;color:var(--muted);letter-spacing:.06em;}
.case-row h3{font-size:1.15rem;line-height:1.4;}
.case-row .desc{font-size:14px;color:var(--muted);line-height:1.7;}
.case-row .figure{font-family:var(--serif);font-size:24px;line-height:1;}
.case-row .figure span{display:block;font-family:var(--sans);font-size:12px;color:var(--muted);margin-top:6px;letter-spacing:.04em;}
.case-row .go{font-size:18px;color:var(--red);transition:transform .2s ease;}
.case-row:hover .go{transform:translateX(4px);}

/* ---------- 价格明细 ---------- */
.pricing{background:linear-gradient(180deg,rgba(252,250,245,0) 0%,rgba(252,250,245,.9) 22%,rgba(252,250,245,0) 100%);}
.price-note-line{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:14px;
  padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  font-size:13px;color:var(--muted);letter-spacing:.03em;
}
.price-table-wrap{
  margin-top:32px;
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  background:var(--card);
  overflow-x:auto;
}
table.price-table{
  width:100%;
  min-width:820px;
  border-collapse:collapse;
}
table.price-table th,
table.price-table td{
  padding:18px 22px;
  text-align:left;
  border-bottom:1px solid var(--line);
  vertical-align:top;
  font-size:15px;
  line-height:1.7;
}
table.price-table thead th{
  font-family:var(--sans);
  font-weight:500;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
  background:rgba(215,205,189,.16);
  white-space:nowrap;
}
table.price-table thead th.col-key{color:var(--red);}
table.price-table tbody th{
  font-family:var(--sans);
  font-weight:500;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--muted);
  white-space:nowrap;
  width:180px;
}
table.price-table tbody tr:last-child th,
table.price-table tbody tr:last-child td{border-bottom:0;}
table.price-table td.price-cell{
  font-family:var(--serif);
  font-size:20px;
  line-height:1.4;
  color:var(--ink);
}
table.price-table td.price-cell small{display:block;font-family:var(--sans);font-size:12px;color:var(--muted);margin-top:4px;letter-spacing:.04em;}
.col-key{background:rgba(139,46,60,.05);}
.price-foot{
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:28px;
}
.price-foot div{
  border-left:2px solid var(--line);
  padding-left:16px;
  font-size:14px;color:var(--muted);line-height:1.75;
}
.price-foot strong{display:block;color:var(--ink);font-size:14px;margin-bottom:6px;}

/* ---------- 流程时间线 ---------- */
.timeline{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:24px;
  margin-top:48px;
  position:relative;
}
.timeline::before{
  content:"";
  position:absolute;left:0;right:0;top:15px;height:1px;background:var(--line);
}
.step{position:relative;padding-top:44px;}
.step::before{
  content:"";
  position:absolute;top:10px;left:0;
  width:11px;height:11px;border-radius:50%;
  background:var(--paper);
  border:1.5px solid var(--red);
  transition:background .2s ease;
}
.step:hover::before{background:var(--red);}
.step .no{font-family:var(--serif);font-size:12px;letter-spacing:.14em;color:var(--muted);}
.step h3{font-size:1.15rem;margin-top:8px;}
.step p{margin-top:10px;font-size:14px;color:var(--muted);line-height:1.75;}
.step .dur{display:inline-block;margin-top:12px;font-size:12px;letter-spacing:.06em;color:var(--olive);border:1px solid var(--line);padding:3px 9px;border-radius:2px;}

/* ---------- 表单 + FAQ ---------- */
.contact-block{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:64px;
  align-items:start;
}
.form-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  padding:40px;
}
.form-card h2{font-size:clamp(1.5rem,2.6vw,2rem);line-height:1.3;}
.form-card > p{margin-top:14px;color:var(--muted);font-size:15px;line-height:1.8;}
.form-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
  margin-top:28px;
}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:13px;letter-spacing:.06em;color:var(--muted);}
.field input,.field select,.field textarea{
  height:48px;
  padding:0 14px;
  background:var(--paper);
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--sans);
  font-size:15px;
  color:var(--ink);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.field textarea{height:108px;padding:12px 14px;resize:vertical;line-height:1.7;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;
  border-color:var(--red);
  box-shadow:0 0 0 3px rgba(139,46,60,.12);
}
.form-submit{
  margin-top:24px;
  width:100%;
  height:48px;
  border:1px solid var(--ink);
  background:var(--ink);
  color:var(--paper);
  border-radius:2px;
  font-size:14px;letter-spacing:.08em;
  cursor:pointer;
  transition:background .2s ease,border-color .2s ease;
}
.form-submit:hover{background:var(--red);border-color:var(--red);}
.form-privacy{margin-top:14px;font-size:12px;color:var(--muted);line-height:1.7;}

.faq-side h2{font-size:clamp(1.8rem,3.2vw,2.6rem);line-height:1.2;}
.faq-side p{margin-top:16px;color:var(--muted);font-size:15px;line-height:1.85;max-width:380px;}
.faq-side .contact-mini{margin-top:30px;padding-top:24px;border-top:1px solid var(--line);font-size:14px;line-height:2;color:var(--muted);}
.faq-side .contact-mini strong{color:var(--ink);font-weight:500;}
.faq-list{border-top:1px solid var(--line);}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;
  cursor:pointer;
  list-style:none;
  font-family:var(--serif);
  font-size:17px;
  line-height:1.6;
  border-left:2px solid transparent;
  padding-left:0;
  transition:padding .2s ease,border-color .2s ease,color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::after{
  content:"+";
  font-family:var(--sans);
  font-size:20px;
  color:var(--muted);
  line-height:1;
  transition:transform .2s ease,color .2s ease;
}
.faq-item[open] summary{color:var(--red);border-left-color:var(--red);padding-left:16px;}
.faq-item[open] summary::after{content:"–";color:var(--red);}
.faq-item .answer{
  padding:0 0 24px 0;
  font-size:16px;
  line-height:1.85;
  color:var(--muted);
  max-width:640px;
}

/* ---------- 底部 CTA ---------- */
.cta-band{background:var(--dark);color:var(--paper);padding:76px 0;}
.cta-inner{
  display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:32px;
}
.cta-inner h2{font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.25;max-width:640px;}
.cta-inner p{margin-top:14px;font-size:15px;color:rgba(244,240,231,.72);max-width:560px;line-height:1.8;}
.cta-band .btn-line{border-color:rgba(244,240,231,.55);color:var(--paper);}
.cta-band .btn-line:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:var(--paper);padding:72px 0 32px;border-top:1px solid rgba(244,240,231,.14);}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:48px;
}
.footer-brand .brand-main{font-size:24px;display:block;color:var(--paper);}
.footer-brand .brand-sub{display:block;margin-top:8px;font-size:11px;letter-spacing:.26em;color:rgba(244,240,231,.6);}
.footer-brand p{margin-top:20px;font-size:14px;line-height:1.85;color:rgba(244,240,231,.62);max-width:280px;}
.footer-col h4{
  font-family:var(--sans);
  font-size:12px;
  letter-spacing:.14em;
  font-weight:500;
  color:rgba(244,240,231,.55);
  margin-bottom:18px;
}
.footer-col a,.footer-col span{
  display:block;
  font-size:14px;
  line-height:2.1;
  color:rgba(244,240,231,.82);
}
.footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:4px;}
.footer-bottom{
  margin-top:48px;padding-top:22px;
  border-top:1px solid rgba(244,240,231,.16);
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:14px;
  font-size:12px;letter-spacing:.04em;color:rgba(244,240,231,.5);
}
.back-top{color:rgba(244,240,231,.7);}
.back-top:hover{color:#fff;}

/* ---------- 动效 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .36s ease,transform .36s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .hero-grid{gap:40px;}
  .case-lead .body{padding:32px;}
  .timeline{grid-template-columns:repeat(3,1fr);row-gap:36px;}
  .timeline::before{display:none;}
  .contact-block{gap:44px;}
  .price-foot{grid-template-columns:1fr 1fr;}
}
@media (max-width:991px){
  :root{--space-section:72px;}
  .nav-side{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-shell{grid-template-columns:38px 1fr 38px;min-height:64px;gap:12px;}
  .brand{grid-column:2;}
  .brand-main{font-size:22px;letter-spacing:.22em;margin-right:-.22em;}
  .nav-cta{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:36px;padding-bottom:48px;}
  .hero-media .frame{aspect-ratio:16/10;}
  .hero-media .float-card{right:12px;top:auto;bottom:16px;width:132px;padding:12px;}
  .hero-media .float-card strong{font-size:24px;}
  .stats-grid{grid-template-columns:1fr 1fr;gap:1px;}
  .stat-item{padding:18px 20px !important;border-bottom:1px solid rgba(244,240,231,.14);}
  .case-lead{grid-template-columns:1fr;}
  .case-lead .media{aspect-ratio:16/9;}
  .case-row{grid-template-columns:44px 1fr;gap:14px 18px;}
  .case-row .desc{grid-column:2;}
  .case-row .figure{grid-column:2;font-size:20px;}
  .case-row .go{display:none;}
  .timeline{grid-template-columns:repeat(2,1fr);}
  .contact-block{grid-template-columns:1fr;}
  .form-card{padding:28px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
}
@media (max-width:767px){
  :root{--space-section:60px;}
  body{font-size:16px;}
  .container{padding-left:18px;padding-right:18px;}
  .hero h1{font-size:clamp(1.9rem,7.4vw,2.6rem);line-height:1.2;}
  .hero-lead{font-size:16px;}
  .hero-actions .btn-ink,.hero-actions .btn-line{width:100%;justify-content:center;}
  .section-head{margin-bottom:32px;}
  .section-head h2{font-size:clamp(1.6rem,6.4vw,2.1rem);}
  .section-head p{font-size:15px;}
  .stats-grid{grid-template-columns:1fr;}
  .case-lead .body{padding:24px;}
  .case-lead h3{font-size:1.22rem;}
  .case-metric-row{gap:22px;}
  .case-row{grid-template-columns:1fr;padding:22px 0;}
  .case-row .idx{font-size:12px;}
  .case-row .desc,.case-row .figure{grid-column:1;}
  .price-foot{grid-template-columns:1fr;}
  .timeline{grid-template-columns:1fr;gap:8px;}
  .step{padding-top:26px;padding-left:26px;border-left:1px solid var(--line);margin-left:5px;}
  .step::before{left:-6px;top:32px;}
  .form-grid{grid-template-columns:1fr;}
  .form-card{padding:24px;}
  .faq-item summary{font-size:16px;}
  .cta-inner{flex-direction:column;align-items:flex-start;}
  .cta-inner .btn-line{width:100%;justify-content:center;}
  .footer-grid{grid-template-columns:1fr;gap:30px;}
  .footer-bottom{flex-direction:column;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{transition:none !important;animation:none !important;}
  .reveal{opacity:1;transform:none;}
  .case-lead:hover,.case-row:hover{transform:none;}
  .case-lead:hover .media img{transform:none;}
}