/* roulang page: index */
:root{
  --c-ink:#14181A;
  --c-ink-2:#4A5359;
  --c-ink-3:#8A9399;
  --c-primary:#1F4B3F;
  --c-primary-deep:#143229;
  --c-accent:#C2643A;
  --c-bg:#FBFAF7;
  --c-bg-2:#F2EFE9;
  --c-line:#E3DFD6;
  --c-white:#FFFFFF;
  --c-ok:#2E7D5B;
  --c-err:#B3452F;
  --radius-s:8px;
  --radius:10px;
  --radius-l:14px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px rgba(20,24,26,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --nav-h:68px;
  --sp-section:88px;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--c-accent);}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;}
p{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
time{font-style:normal;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,250,247,.94);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease),background .25s var(--ease);
}
.site-header.is-scrolled{
  background:var(--c-white);
  border-bottom-color:var(--c-line);
  box-shadow:0 1px 12px rgba(20,24,26,.05);
}
.nav-wrap{display:flex;align-items:center;gap:24px;height:var(--nav-h);}
.logo{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px;white-space:nowrap;}
.logo:hover{color:var(--c-ink);}
.logo em{font-style:normal;color:var(--c-accent);margin:0 4px;font-weight:400;}
.main-nav{display:flex;align-items:center;gap:28px;margin:0 auto;}
.nav-link{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.menu-toggle{
  display:none;width:42px;height:42px;flex-direction:column;
  align-items:center;justify-content:center;gap:6px;
  border-radius:var(--radius-s);border:1px solid var(--c-line);background:var(--c-white);
}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px;transition:transform .25s var(--ease);}
.menu-toggle.is-open span:first-child{transform:translateY(4px) rotate(45deg);}
.menu-toggle.is-open span:last-child{transform:translateY(-4px) rotate(-45deg);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-s);
  font-size:15px;font-weight:600;line-height:1;white-space:nowrap;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;transform:translateY(1px);}
.btn-primary:active{transform:translateY(2px);}
.btn-ghost{background:transparent;border:1px solid var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:rgba(31,75,63,.08);color:var(--c-primary);transform:translateY(1px);}
.btn-ghost:active{transform:translateY(2px);}
.btn[disabled]{opacity:.4;cursor:not-allowed;}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,24,26,.4);z-index:75;
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;pointer-events:auto;}
.drawer{
  position:fixed;top:0;right:0;width:min(320px,86vw);height:100%;z-index:80;
  background:var(--c-white);padding:26px 22px 22px;
  display:flex;flex-direction:column;gap:4px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s var(--ease);
  box-shadow:-8px 0 30px rgba(20,24,26,.1);
}
.drawer.is-open{transform:none;}
.drawer__title{font-size:13px;letter-spacing:.3px;color:var(--c-ink-3);margin:10px 0 10px;}
.drawer__link{display:block;padding:12px 12px;border-radius:var(--radius-s);font-size:15px;color:var(--c-ink-2);}
.drawer__link:hover{background:var(--c-bg-2);color:var(--c-primary);}
.drawer__link.active{color:var(--c-primary);font-weight:600;background:rgba(31,75,63,.06);}
.drawer .btn{width:100%;margin-top:16px;}
@media (min-width:821px){.drawer,.drawer-mask{display:none;}}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--c-bg-2);}
.hero__media{position:absolute;inset:0;}
.hero__media img{width:100%;height:100%;object-fit:cover;}
.hero__veil{
  position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(251,250,247,.97) 0%,rgba(251,250,247,.9) 44%,rgba(251,250,247,.46) 100%);
}
.hero__inner{position:relative;z-index:2;display:flex;align-items:center;min-height:520px;padding:76px 0;}
.hero__text{max-width:560px;}
.eyebrow{
  font-size:13px;letter-spacing:1.6px;font-weight:600;color:var(--c-accent);
  text-transform:uppercase;margin-bottom:16px;
}
.hero h1{
  font-family:var(--font-serif);
  font-size:44px;line-height:1.15;letter-spacing:-.5px;
  font-weight:700;margin-bottom:18px;
}
.hero__sub{font-size:17px;color:var(--c-ink-2);margin-bottom:22px;max-width:28em;}
.hero__badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:30px;}
.pill{
  display:inline-flex;align-items:center;font-size:12px;letter-spacing:.3px;
  color:var(--c-ink-2);border:1px solid var(--c-line);border-radius:999px;
  padding:5px 14px;background:rgba(255,255,255,.72);
}
.hero__cta{display:flex;flex-wrap:wrap;gap:12px;}
.hero__text > *{opacity:0;animation:riseIn .6s var(--ease) forwards;}
.hero__text > *:nth-child(1){animation-delay:.05s;}
.hero__text > *:nth-child(2){animation-delay:.13s;}
.hero__text > *:nth-child(3){animation-delay:.21s;}
.hero__text > *:nth-child(4){animation-delay:.29s;}
.hero__text > *:nth-child(5){animation-delay:.37s;}
@keyframes riseIn{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:none;}}

/* ---------- 统计条 ---------- */
.stats{background:var(--c-white);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);}
.stat{padding:26px 24px;border-right:1px solid var(--c-line);}
.stat:last-child{border-right:0;}
.stat__num{font-family:var(--font-serif);font-size:32px;line-height:1.1;color:var(--c-primary);}
.stat__label{font-size:13px;letter-spacing:.3px;color:var(--c-ink-3);margin-top:6px;}

/* ---------- 板块通用 ---------- */
.section{padding:var(--sp-section) 0;}
.section--alt{background:var(--c-bg-2);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;margin-bottom:36px;flex-wrap:wrap;
}
.section-head h2{
  position:relative;font-size:28px;font-weight:600;padding-left:16px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;
  width:4px;border-radius:2px;background:var(--c-accent);
}
.section-head p{font-size:15px;color:var(--c-ink-3);margin-top:8px;padding-left:16px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-primary);
}
.link-arrow span{transition:transform .2s var(--ease);}
.link-arrow:hover{color:var(--c-primary);text-decoration:underline;text-decoration-color:var(--c-accent);}
.link-arrow:hover span{transform:translateX(4px);}

/* ---------- 合集目录 ---------- */
.catalog{
  display:grid;grid-template-columns:repeat(2,1fr);
  gap:0 44px;border-top:1px solid var(--c-line);
}
.catalog-item{
  display:flex;align-items:flex-start;gap:20px;
  padding:26px 6px;border-bottom:1px solid var(--c-line);
  transition:background .2s var(--ease);
}
.catalog-item:hover{background:rgba(31,75,63,.04);}
.catalog-item .num{
  font-family:var(--font-serif);font-size:32px;line-height:1;
  color:var(--c-accent);opacity:.9;min-width:54px;
  transition:color .2s var(--ease),opacity .2s var(--ease);
}
.catalog-item:hover .num{color:var(--c-primary);opacity:1;}
.catalog-body h3{font-size:18px;font-weight:600;margin-bottom:6px;}
.catalog-body h3 a{color:var(--c-ink);}
.catalog-body h3 a:hover{color:var(--c-primary);}
.catalog-body p{font-size:14px;color:var(--c-ink-2);}
.catalog-arrow{
  margin-left:auto;align-self:center;color:var(--c-ink-3);font-size:16px;
  transition:transform .2s var(--ease),color .2s var(--ease);
}
.catalog-item:hover .catalog-arrow{transform:translateX(4px);color:var(--c-primary);}

/* ---------- 标签行 ---------- */
.filter-row{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.tag{
  display:inline-flex;align-items:center;font-size:13px;letter-spacing:.3px;
  color:var(--c-ink-2);border:1px solid var(--c-line);background:var(--c-white);
  border-radius:999px;padding:6px 16px;
}
.tag.is-active{background:var(--c-primary);border-color:var(--c-primary);color:#fff;font-weight:600;}

/* ---------- 卡片 ---------- */
.grid{display:grid;gap:24px;}
.grid-featured{grid-template-columns:repeat(3,1fr);}
.grid-cms{grid-template-columns:repeat(3,1fr);}
.card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--c-white);border:1px solid var(--c-line);
  border-radius:var(--radius);box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);}
.card:focus-within{outline:2px solid var(--c-primary);outline-offset:2px;}
.card--wide{grid-column:span 2;border-radius:var(--radius-l);}
.card__media{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-2);}
.card__media img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.card:hover .card__media img{transform:scale(1.03);}
.card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.card__title{font-size:18px;font-weight:600;line-height:1.45;}
.card__title a{
  color:var(--c-ink);display:-webkit-box;-webkit-line-clamp:2;
  -webkit-box-orient:vertical;overflow:hidden;
}
.card__title a:hover{color:var(--c-primary);}
.card__desc{
  font-size:14px;color:var(--c-ink-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card__foot{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:auto;padding-top:12px;border-top:1px solid var(--c-line);
  font-size:13px;letter-spacing:.3px;color:var(--c-ink-3);
}
.badge{
  align-self:flex-start;display:inline-flex;font-size:12px;font-weight:600;
  letter-spacing:.3px;color:var(--c-primary);background:rgba(31,75,63,.08);
  border-radius:4px;padding:4px 10px;
}
.arrow{transition:transform .2s var(--ease),color .2s var(--ease);}
.card:hover .arrow{transform:translateX(4px);color:var(--c-primary);}

/* ---------- 空态 ---------- */
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--radius);
  background:var(--c-white);padding:48px 24px;text-align:center;
}
.empty-state p{font-size:15px;color:var(--c-ink-3);margin-bottom:14px;}

/* ---------- 横向推荐 ---------- */
.rail{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(260px,1fr);
  gap:20px;overflow-x:auto;padding-bottom:12px;
  scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:var(--c-line);border-radius:3px;}
.rail .card{scroll-snap-align:start;}
.rail .card__media{aspect-ratio:3/2;}

/* ---------- FAQ ---------- */
.faq{max-width:860px;}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 4px;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  position:relative;flex:0 0 18px;width:18px;height:18px;
  transition:transform .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--c-accent);
  transform:translate(-50%,-50%);border-radius:2px;
}
.faq-icon::before{width:14px;height:2px;}
.faq-icon::after{width:2px;height:14px;}
.faq-item.is-open .faq-icon{transform:rotate(45deg);}
.faq-item.is-open .faq-q{color:var(--c-primary);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .26s var(--ease);
}
.faq-a__inner{
  padding:0 4px 24px 18px;border-left:2px solid var(--c-accent);
  font-size:15px;color:var(--c-ink-2);
}

/* ---------- 表单 ---------- */
.subscribe{
  display:grid;grid-template-columns:1.05fr 1fr;gap:48px;align-items:center;
}
.subscribe h2{font-size:28px;margin-bottom:12px;padding-left:16px;position:relative;}
.subscribe h2::before{
  content:"";position:absolute;left:0;top:5px;bottom:5px;width:4px;
  border-radius:2px;background:var(--c-accent);
}
.subscribe p{font-size:15px;color:var(--c-ink-2);padding-left:16px;}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:8px;letter-spacing:.3px;}
.form-field input{
  width:100%;padding:12px 14px;font:inherit;font-size:15px;color:var(--c-ink);
  background:var(--c-white);border:1px solid var(--c-line);border-radius:var(--radius-s);
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.form-field input::placeholder{color:var(--c-ink-3);}
.form-field input:focus{
  outline:none;border-color:var(--c-primary);
  box-shadow:0 0 0 2px rgba(31,75,63,.12);
}
.form-hint{font-size:12px;color:var(--c-ink-3);margin-top:12px;}
.form-msg{display:none;font-size:13px;border-radius:var(--radius-s);padding:10px 14px;margin-top:12px;}
.form-msg.is-ok{display:block;background:rgba(46,125,91,.08);color:var(--c-ok);}
.form-msg.is-err{display:block;background:rgba(179,69,47,.08);color:var(--c-err);}

/* ---------- 收藏 / 分享 CTA ---------- */
.cta-band{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:56px 0;}
.cta-band__inner{
  display:flex;align-items:center;justify-content:space-between;gap:36px;flex-wrap:wrap;
}
.cta-band h2{font-size:26px;margin-bottom:8px;}
.cta-band p{font-size:15px;color:var(--c-ink-2);}
.cta-band__actions{display:flex;align-items:center;gap:20px;flex-wrap:wrap;}
.cta-divider{width:1px;height:34px;background:var(--c-line);}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding-top:64px;font-size:14px;line-height:1.9;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px;}
.footer-brand{font-size:18px;font-weight:700;color:var(--c-ink);margin-bottom:12px;}
.footer-brand em{font-style:normal;color:var(--c-accent);margin:0 4px;font-weight:400;}
.footer-col h4{font-size:15px;font-weight:600;color:var(--c-ink);margin-bottom:14px;}
.footer-col a{display:block;color:var(--c-ink-2);}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-decoration-color:var(--c-accent);}
.footer-col .muted{color:var(--c-ink-3);}
.footer-bottom{
  border-top:1px solid var(--c-line);padding:20px 0 28px;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
  font-size:12px;letter-spacing:.3px;color:var(--c-ink-3);
}

/* ---------- 入场动效 ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none;}
  .hero__text > *{opacity:1;animation:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .container{padding:0 22px;}
}
@media (max-width:1024px){
  :root{--sp-section:72px;}
  .main-nav{gap:20px;}
  .nav-link{font-size:14px;}
  .hero__inner{min-height:460px;padding:64px 0;}
  .hero h1{font-size:36px;}
  .grid-featured,.grid-cms{grid-template-columns:repeat(2,1fr);}
  .card--wide{grid-column:span 2;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .subscribe{grid-template-columns:1fr;gap:32px;}
}
@media (max-width:820px){
  .main-nav{display:none;}
  .menu-toggle{display:flex;}
  .nav-cta-desktop{display:none;}
  .stats__grid{grid-template-columns:repeat(2,1fr);}
  .stat:nth-child(2){border-right:0;}
  .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--c-line);}
}
@media (max-width:768px){
  :root{--sp-section:56px;--nav-h:56px;}
  .container{padding:0 18px;}
  .hero__inner{min-height:380px;padding:52px 0;}
  .hero h1{font-size:28px;letter-spacing:-.3px;}
  .hero__sub{font-size:15px;}
  .hero__veil{background:linear-gradient(180deg,rgba(251,250,247,.96) 0%,rgba(251,250,247,.9) 60%,rgba(251,250,247,.72) 100%);}
  .section-head h2,.subscribe h2,.cta-band h2{font-size:20px;}
  .catalog{grid-template-columns:1fr;}
  .catalog-item{gap:14px;padding:22px 4px;}
  .catalog-item .num{font-size:26px;min-width:42px;}
  .grid-featured,.grid-cms{grid-template-columns:1fr;}
  .card--wide{grid-column:span 1;}
  .cta-band__inner{flex-direction:column;align-items:flex-start;gap:24px;}
  .cta-divider{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (max-width:480px){
  .hero h1{font-size:25px;}
  .hero__cta{flex-direction:column;align-items:stretch;}
  .hero__cta .btn{width:100%;}
  .stat{padding:20px 16px;}
  .stat__num{font-size:26px;}
  .rail{grid-auto-columns:minmax(220px,80%);}
}

/* roulang page: article */
:root{
  --c-ink:#14181A;
  --c-ink-2:#4A5359;
  --c-ink-3:#8A9399;
  --c-body:#333B40;
  --c-primary:#1F4B3F;
  --c-primary-deep:#143229;
  --c-accent:#C2643A;
  --c-bg:#FBFAF7;
  --c-bg-2:#F2EFE9;
  --c-line:#E3DFD6;
  --c-ok:#2E7D5B;
  --c-warn:#B98A1F;
  --c-err:#B3452F;
  --r-xs:4px;
  --r-sm:6px;
  --r-md:8px;
  --r-lg:10px;
  --r-xl:14px;
  --r-pill:999px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px rgba(20,24,26,.08);
  --shadow-3:0 14px 34px rgba(20,24,26,.10);
  --sp-section:88px;
  --sp-block:32px;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC",serif;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-body);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease)}
a:hover{color:var(--c-primary-deep)}
button{font-family:inherit;font-size:inherit;cursor:pointer}
input,textarea{font-family:inherit;font-size:inherit}
h1,h2,h3,h4{color:var(--c-ink);margin:0;line-height:1.3}
p{margin:0}
ul,ol{margin:0;padding:0}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.muted{color:var(--c-ink-3);font-size:14px}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:#FFFFFF;
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 1px 0 rgba(20,24,26,.02)}
.nav-wrap{display:flex;align-items:center;height:68px;gap:28px}
.logo{
  font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:.2px;
  display:inline-flex;align-items:center;white-space:nowrap;
}
.logo em{font-style:normal;color:var(--c-accent);margin:0 4px}
.logo:hover{color:var(--c-ink)}
.main-nav{display:flex;align-items:center;gap:28px;margin-left:8px}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;
  border-bottom:2px solid transparent;
}
.nav-link:hover{color:var(--c-primary);border-bottom-color:var(--c-accent)}
.nav-link.active{color:var(--c-primary);font-weight:600;border-bottom-color:var(--c-primary)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px}
.menu-toggle{
  display:none;width:42px;height:42px;border:1px solid var(--c-line);background:#fff;
  border-radius:var(--r-md);position:relative;
}
.menu-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--c-ink);border-radius:2px;
  transition:transform .24s var(--ease),top .24s var(--ease);
}
.menu-toggle span:nth-child(1){top:16px}
.menu-toggle span:nth-child(2){top:24px}
.menu-toggle[aria-expanded="true"] span:nth-child(1){top:20px;transform:rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){top:20px;transform:rotate(-45deg)}

/* 抽屉 */
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);z-index:60;
  background:#FFFFFF;border-left:1px solid var(--c-line);
  padding:22px 20px 28px;display:flex;flex-direction:column;gap:6px;
  transform:translateX(102%);transition:transform .28s var(--ease);
}
.nav-drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-head strong{font-size:17px;color:var(--c-ink)}
.drawer-close{border:1px solid var(--c-line);background:#fff;border-radius:var(--r-md);width:36px;height:36px;color:var(--c-ink-2);line-height:1}
.nav-drawer a.d-link{
  padding:13px 4px;border-bottom:1px solid var(--c-line);color:var(--c-ink-2);font-size:15px;
}
.nav-drawer a.d-link:hover,.nav-drawer a.d-link.active{color:var(--c-primary);font-weight:600}
.drawer-cta{margin-top:auto;width:100%;justify-content:center}
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,24,26,.4);z-index:55;opacity:0;visibility:hidden;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-mask.is-open{opacity:1;visibility:visible}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;gap:8px;border-radius:var(--r-md);
  padding:12px 22px;font-weight:600;font-size:15px;border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),box-shadow .2s var(--ease),transform .12s var(--ease),border-color .2s var(--ease);
  cursor:pointer;text-align:center;justify-content:center;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#FFFFFF}
.btn-primary:hover{background:var(--c-primary-deep);color:#FFFFFF;box-shadow:var(--shadow-2)}
.btn-line{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-line:hover{background:rgba(31,75,63,.08);color:var(--c-primary-deep)}
.btn-ghost{background:transparent;border-color:var(--c-line);color:var(--c-ink-2)}
.btn-ghost:hover{border-color:var(--c-primary);color:var(--c-primary)}
.btn-sm{padding:8px 14px;font-size:13px;border-radius:var(--r-sm)}
.btn[disabled],.btn:disabled{opacity:.4;cursor:not-allowed}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--c-primary)}
.link-arrow span{transition:transform .2s var(--ease)}
.link-arrow:hover span{transform:translateX(4px)}

/* ============ 文章头部 ============ */
.article-hero{
  background:var(--c-bg-2);
  border-bottom:1px solid var(--c-line);
  padding:44px 0 40px;
}
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:13px;letter-spacing:.3px;color:var(--c-ink-3);margin-bottom:18px;
}
.breadcrumb a{color:var(--c-ink-3)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb .sep{color:var(--c-line)}
.breadcrumb .cur{color:var(--c-ink-2)}
.article-hero h1{
  font-size:36px;line-height:1.25;letter-spacing:-.4px;font-weight:700;max-width:860px;
}
.hero-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;
  font-size:13px;letter-spacing:.3px;color:var(--c-ink-3);
}
.hero-meta .dot{width:4px;height:4px;border-radius:50%;background:var(--c-line)}
.badge{
  display:inline-flex;align-items:center;
  background:rgba(31,75,63,.08);color:var(--c-primary);
  border-radius:var(--r-xs);padding:4px 10px;font-size:12px;font-weight:600;letter-spacing:.4px;
}
.badge-accent{background:rgba(194,100,58,.10);color:var(--c-accent)}

/* ============ 文章主体 ============ */
.article-shell{
  max-width:1200px;margin:0 auto;padding:56px 24px 0;
  display:grid;grid-template-columns:minmax(0,1fr) 268px;gap:56px;align-items:start;
}
.article-main{max-width:760px;min-width:0}
.article-body{
  font-size:16px;line-height:1.75;color:var(--c-body);
  background:var(--c-bg);
}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:24px;font-weight:600;color:var(--c-ink);
  margin:48px 0 18px;padding-left:14px;border-left:4px solid var(--c-accent);line-height:1.4;
}
.article-body h3{font-size:19px;font-weight:600;margin:32px 0 14px;color:var(--c-ink)}
.article-body h4{font-size:17px;font-weight:600;margin:26px 0 12px;color:var(--c-ink)}
.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:0}
.article-body ul li,.article-body ol li{position:relative;padding-left:22px;margin-bottom:10px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:7px;height:7px;background:var(--c-accent);border-radius:1px;
}
.article-body ol{counter-reset:item}
.article-body ol li{counter-increment:item}
.article-body ol li::before{
  content:counter(item,decimal-leading-zero);
  position:absolute;left:0;top:0;color:var(--c-accent);font-family:var(--font-serif);font-size:14px;font-weight:600;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--c-bg-2);
  border-left:4px solid var(--c-primary);border-radius:0 var(--r-md) var(--r-md) 0;color:var(--c-ink-2);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{width:100%;border-radius:var(--r-lg);margin:26px 0 10px;object-fit:cover}
.article-body figure{margin:26px 0}
.article-body figcaption{font-size:13px;color:var(--c-ink-3);text-align:center;margin-top:8px}
.article-body a{color:var(--c-primary);border-bottom:1px solid rgba(194,100,58,.35)}
.article-body a:hover{color:var(--c-accent);border-bottom-color:var(--c-accent)}
.article-body table{
  width:100%;border-collapse:collapse;margin:26px 0;background:var(--c-bg-2);
  border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;font-size:15px;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--c-line);text-align:left}
.article-body th{background:#EDE9E1;color:var(--c-ink);font-weight:600}
.article-body tr:last-child td{border-bottom:none}
.article-body pre{
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:16px 18px;overflow-x:auto;font-size:14px;line-height:1.65;margin:24px 0;
}
.article-body code{
  background:var(--c-bg-2);border:1px solid var(--c-line);border-radius:4px;padding:1px 6px;font-size:14px;
}
.article-body pre code{background:none;border:none;padding:0}

/* 空态 */
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-xl);background:#FFFFFF;
  padding:52px 28px;text-align:center;
}
.empty-state h2{font-size:20px;margin-bottom:10px}
.empty-state p{color:var(--c-ink-3);margin-bottom:22px}

/* ============ 侧栏 ============ */
.article-side{position:sticky;top:92px;display:flex;flex-direction:column;gap:20px}
.toc-card{
  background:#FFFFFF;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--shadow-1);
}
.toc-title{font-size:13px;letter-spacing:.4px;color:var(--c-ink-3);margin-bottom:14px}
.toc-nav{display:flex;flex-direction:column;gap:2px}
.toc-nav a{
  display:block;font-size:14px;color:var(--c-ink-2);padding:8px 0 8px 12px;
  border-left:2px solid transparent;line-height:1.5;
}
.toc-nav a:hover{color:var(--c-primary);border-left-color:rgba(194,100,58,.4)}
.toc-nav a.is-active{color:var(--c-primary);font-weight:600;border-left-color:var(--c-accent)}
.toc-nav a.sub{padding-left:24px;font-size:13px;color:var(--c-ink-3)}
.share-mini{
  background:#FFFFFF;border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:18px 20px;box-shadow:var(--shadow-1);
}
.share-mini-actions{display:flex;gap:10px;margin-top:12px}
.share-mini-actions .btn{flex:1}

/* ============ 文章底部 ============ */
.article-foot{
  max-width:760px;margin:56px 0 0;padding-top:28px;border-top:1px solid var(--c-line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
}
.article-foot .foot-btns{display:flex;gap:10px;flex-wrap:wrap}

/* ============ 板块通用 ============ */
.section{padding:var(--sp-section) 0 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:var(--sp-block)}
.section-title{font-size:28px;font-weight:600;color:var(--c-ink);padding-left:14px;border-left:4px solid var(--c-accent);line-height:1.35}
.section-sub{margin-top:10px;color:var(--c-ink-3);font-size:15px}

/* ============ 卡片 ============ */
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  display:flex;flex-direction:column;background:#FFFFFF;border:1px solid var(--c-line);
  border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#D8D3C7}
.card:focus-within{outline:2px solid var(--c-primary);outline-offset:2px}
.card-media{position:relative;aspect-ratio:16/10;overflow:hidden;background:var(--c-bg-2)}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .28s var(--ease)}
.card:hover .card-media img{transform:scale(1.03)}
.card-body{padding:20px;display:flex;flex-direction:column;gap:12px;flex:1}
.card-body h3{font-size:18px;font-weight:600;line-height:1.45}
.card-body h3 a{color:var(--c-ink)}
.card-body h3 a:hover{color:var(--c-primary)}
.card-text{
  color:var(--c-ink-2);font-size:14px;line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-ink-3)}
.card-foot .more{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:6px}
.card-foot .more span{transition:transform .2s var(--ease)}
.card:hover .card-foot .more span{transform:translateX(4px)}

/* ============ CTA ============ */
.cta-band{
  margin-top:var(--sp-section);background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);
  padding:52px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-copy h2{font-size:26px;font-weight:600}
.cta-copy p{color:var(--c-ink-2);margin-top:10px;max-width:520px}
.cta-actions{display:flex;align-items:center;gap:0}
.cta-actions .btn{margin-left:24px}
.cta-divider{width:1px;height:38px;background:var(--c-line);margin-left:24px}
.cta-actions .btn:first-child{margin-left:0}

/* ============ 页脚 ============ */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:56px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{font-size:16px;font-weight:700;color:var(--c-ink);margin-bottom:14px}
.footer-brand em{font-style:normal;color:var(--c-accent);margin:0 4px}
.footer-col h4{font-size:14px;font-weight:600;color:var(--c-ink);margin-bottom:14px;letter-spacing:.4px}
.footer-col a,.footer-col span{display:block;font-size:14px;line-height:1.9;color:var(--c-ink-2)}
.footer-col a:hover{color:var(--c-primary)}
.footer-col p{font-size:14px;line-height:1.9;color:var(--c-ink-2);max-width:340px}
.footer-bottom{
  margin-top:44px;padding-top:18px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:12px;color:var(--c-ink-3);letter-spacing:.3px;
}

/* ============ 动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  *{animation:none !important;transition:none !important}
}

/* ============ 响应式 ============ */
@media (max-width:1180px){
  .article-shell{gap:40px}
}
@media (max-width:1024px){
  .main-nav{display:none}
  .menu-toggle{display:block}
  .article-shell{grid-template-columns:minmax(0,1fr);gap:36px;padding-top:44px}
  .article-side{position:static;flex-direction:row;flex-wrap:wrap}
  .toc-card{flex:1 1 300px}
  .share-mini{flex:1 1 240px}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .section{padding-top:72px}
}
@media (max-width:768px){
  :root{--sp-section:56px;--sp-block:24px}
  .container{padding:0 18px}
  .nav-wrap{height:56px}
  .article-hero{padding:28px 0 26px}
  .article-hero h1{font-size:26px}
  .article-body h2{font-size:20px;margin-top:38px}
  .article-body h3{font-size:17px}
  .section-title{font-size:20px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1}
}
@media (max-width:640px){
  .article-shell{padding:36px 18px 0}
  .article-side{flex-direction:column}
  .card-grid{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:1fr}
  .article-foot{flex-direction:column;align-items:flex-start}
  .article-foot .foot-btns{width:100%}
  .article-foot .foot-btns .btn{flex:1}
}

/* roulang page: category1 */
:root{
  --c-ink:#14181A;
  --c-ink-2:#4A5359;
  --c-ink-3:#8A9399;
  --c-primary:#1F4B3F;
  --c-primary-deep:#143229;
  --c-accent:#C2643A;
  --c-bg:#FBFAF7;
  --c-bg-2:#F2EFE9;
  --c-line:#E3DFD6;
  --c-ok:#2E7D5B;
  --c-warn:#B98A1F;
  --c-err:#B3452F;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC",serif;
  --r-sm:6px;
  --r-md:10px;
  --r-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 8px 24px rgba(20,24,26,.08);
  --gap-sec:88px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-ink);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--c-accent);}
button,input{font-family:inherit;font-size:inherit;}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3;}
p{margin:0 0 1.2em;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{max-width:1200px;margin:0 auto;padding:0 24px;}
.muted{color:var(--c-ink-3);}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(251,250,247,.94);
  backdrop-filter:saturate(1.2) blur(8px);
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{border-bottom-color:var(--c-line);box-shadow:0 1px 2px rgba(20,24,26,.04);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px;}
.logo{
  font-size:18px;font-weight:700;color:var(--c-ink);
  letter-spacing:-.2px;white-space:nowrap;
}
.logo em{font-style:normal;color:var(--c-accent);margin:0 2px;}
.logo:hover{color:var(--c-ink);}
.main-nav{display:flex;align-items:center;gap:28px;}
.nav-link{
  position:relative;font-size:15px;color:var(--c-ink-2);padding:4px 0;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--c-accent);transform:scaleX(0);transform-origin:left;
  transition:transform .24s var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border:1px solid transparent;border-radius:8px;cursor:pointer;
  font-weight:600;font-size:15px;padding:12px 22px;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .12s var(--ease),box-shadow .22s var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary);}
.btn-ghost:hover{background:rgba(31,75,63,.08);color:var(--c-primary);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{padding:9px 18px;font-size:14px;}
.btn-arrow{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--c-primary);padding:4px 0;}
.btn-arrow svg{transition:transform .22s var(--ease);}
.btn-arrow:hover svg{transform:translateX(4px);}
.btn[disabled],.btn.is-disabled{opacity:.4;cursor:not-allowed;}
.menu-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--c-line);border-radius:8px;
  background:#fff;cursor:pointer;padding:0;position:relative;
}
.menu-toggle span{
  position:absolute;left:10px;width:18px;height:2px;background:var(--c-ink);border-radius:2px;
  transition:transform .24s var(--ease),opacity .24s var(--ease);
}
.menu-toggle span:nth-child(1){top:16px;}
.menu-toggle span:nth-child(2){top:22px;}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(3px) rotate(45deg);}
.menu-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-3px) rotate(-45deg);}
.nav-mask{
  position:fixed;inset:0;background:rgba(20,24,26,.4);opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);z-index:40;
}
.nav-mask.show{opacity:1;visibility:visible;}
.nav-cta-mobile{display:none;}

/* ---------- 段落与板块 ---------- */
.section{padding-top:var(--gap-sec);}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:24px;
  flex-wrap:wrap;margin-bottom:32px;
}
.section-head h2{
  font-size:28px;padding-left:14px;position:relative;letter-spacing:-.2px;
}
.section-head h2::before{
  content:"";position:absolute;left:0;top:4px;bottom:4px;width:4px;border-radius:2px;background:var(--c-accent);
}
.section-head p{margin:8px 0 0;color:var(--c-ink-3);font-size:14px;}
.section-desc{margin:8px 0 0 14px;color:var(--c-ink-2);font-size:15px;}

/* ---------- 内页封面 ---------- */
.page-hero{
  background:var(--c-bg-2);border-bottom:1px solid var(--c-line);
  padding:44px 0 52px;
}
.crumb{font-size:13px;color:var(--c-ink-3);letter-spacing:.3px;margin-bottom:22px;}
.crumb a{color:var(--c-ink-2);}
.crumb a:hover{color:var(--c-primary);}
.crumb span{margin:0 6px;color:var(--c-ink-3);}
.page-hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;}
.page-hero h1{
  font-family:var(--font-serif);font-size:44px;line-height:1.15;letter-spacing:-.5px;
  margin-bottom:16px;max-width:12em;
}
.page-hero .lede{font-size:17px;color:var(--c-ink-2);max-width:30em;margin-bottom:22px;}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  border:1px solid var(--c-line);border-radius:var(--r-pill);
  background:#fff;padding:6px 14px;font-size:12px;letter-spacing:.3px;color:var(--c-ink-2);
}
.badge .dot{width:6px;height:6px;border-radius:50%;background:var(--c-accent);}
.hero-media{
  border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--c-line);
  box-shadow:var(--sh-1);aspect-ratio:16/10;background:#fff;
}
.hero-media img{width:100%;height:100%;object-fit:cover;}

/* ---------- 目录 ---------- */
.catalog-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;}
.catalog-item{
  display:flex;gap:18px;align-items:flex-start;
  padding:20px 4px;border-bottom:1px solid var(--c-line);
  transition:background-color .22s var(--ease);
}
.catalog-item:hover{background:rgba(31,75,63,.03);}
.catalog-num{
  font-family:var(--font-serif);font-size:32px;line-height:1;color:var(--c-accent);
  opacity:.9;min-width:52px;transition:color .22s var(--ease);
}
.catalog-item:hover .catalog-num{color:var(--c-primary);}
.catalog-body{flex:1;}
.catalog-body h3{font-size:18px;margin-bottom:4px;}
.catalog-body p{margin:0;font-size:14px;color:var(--c-ink-2);}
.catalog-arrow{color:var(--c-ink-3);transition:transform .22s var(--ease),color .22s var(--ease);margin-top:6px;}
.catalog-item:hover .catalog-arrow{transform:translateX(4px);color:var(--c-primary);}

/* ---------- 精选条目（编号流） ---------- */
.feature-list{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.feature-card{
  display:flex;gap:20px;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:20px;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.feature-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.feature-thumb{
  width:112px;flex:0 0 112px;aspect-ratio:3/2;border-radius:8px;overflow:hidden;background:var(--c-bg-2);
}
.feature-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.feature-card:hover .feature-thumb img{transform:scale(1.03);}
.feature-body{flex:1;min-width:0;}
.feature-top{display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.feature-no{font-family:var(--font-serif);font-size:20px;color:var(--c-accent);line-height:1;}
.tag{
  display:inline-block;background:rgba(31,75,63,.08);color:var(--c-primary);
  border-radius:4px;font-size:12px;padding:2px 8px;letter-spacing:.3px;
}
.tag-accent{background:rgba(194,100,58,.1);color:var(--c-accent);}
.feature-body h3{font-size:18px;margin-bottom:6px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;}
.feature-body p{
  font-size:14px;color:var(--c-ink-2);margin:0 0 12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.feature-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--c-ink-3);letter-spacing:.3px;}

/* ---------- 场景卡 ---------- */
.scene-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.scene-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.scene-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.scene-icon{
  width:40px;height:40px;border-radius:8px;background:rgba(31,75,63,.08);
  display:flex;align-items:center;justify-content:center;color:var(--c-primary);margin-bottom:16px;
}
.scene-card h3{font-size:18px;margin-bottom:8px;}
.scene-card p{margin:0;font-size:14px;color:var(--c-ink-2);}

/* ---------- 流程 ---------- */
.steps{
  background-image:linear-gradient(rgba(251,250,247,.93),rgba(251,250,247,.93)),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  border:1px solid var(--c-line);border-radius:var(--r-lg);
  padding:40px 36px;
}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px;}
.step-no{font-family:var(--font-serif);font-size:28px;color:var(--c-accent);line-height:1;margin-bottom:12px;}
.step h3{font-size:17px;margin-bottom:6px;}
.step p{margin:0;font-size:14px;color:var(--c-ink-2);}

/* ---------- 相关推荐 ---------- */
.rec-scroll{
  display:grid;grid-template-columns:repeat(4,1fr);gap:20px;
}
.rec-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-md);overflow:hidden;
  box-shadow:var(--sh-1);display:flex;flex-direction:column;
  transition:box-shadow .22s var(--ease),transform .22s var(--ease);
}
.rec-card:hover{box-shadow:var(--sh-2);transform:translateY(-3px);}
.rec-card .rec-img{aspect-ratio:3/2;overflow:hidden;background:var(--c-bg-2);}
.rec-card .rec-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.rec-card:hover .rec-img img{transform:scale(1.03);}
.rec-body{padding:16px;display:flex;flex-direction:column;gap:8px;flex:1;}
.rec-body h3{font-size:16px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.rec-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--c-ink-3);}

/* ---------- FAQ ---------- */
.faq-list{border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;background:none;border:0;cursor:pointer;text-align:left;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 4px;font-size:16px;font-weight:600;color:var(--c-ink);
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  position:relative;width:18px;height:18px;flex:0 0 18px;
  transition:transform .26s var(--ease);
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--c-accent);border-radius:2px;
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .26s var(--ease);
  border-left:2px solid transparent;
}
.faq-item.open .faq-a{border-left-color:var(--c-accent);}
.faq-a p{margin:0;padding:0 24px 20px 18px;font-size:15px;color:var(--c-ink-2);}

/* ---------- 轻量 CTA ---------- */
.cta-bar{
  margin-top:var(--gap-sec);
  background:var(--c-bg-2);border-top:1px solid var(--c-line);
  padding:48px 0;
}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;}
.cta-inner h2{font-size:24px;margin-bottom:8px;}
.cta-inner p{margin:0;color:var(--c-ink-2);font-size:15px;}
.subscribe{display:flex;align-items:flex-end;gap:12px;flex-wrap:wrap;}
.field{display:flex;flex-direction:column;gap:6px;}
.field label{font-size:13px;color:var(--c-ink-2);}
.field input{
  border:1px solid var(--c-line);border-radius:8px;background:#fff;
  padding:11px 14px;font-size:15px;color:var(--c-ink);min-width:260px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field input::placeholder{color:var(--c-ink-3);}
.field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 2px rgba(31,75,63,.12);}
.field.has-error input{border-color:var(--c-err);}
.form-note{font-size:13px;margin-top:10px;flex-basis:100%;}
.form-note.error{color:var(--c-err);}
.form-note.success{
  color:var(--c-ok);background:rgba(46,125,91,.08);
  border-radius:8px;padding:10px 14px;display:inline-block;
}

/* ---------- 页脚 ---------- */
.site-footer{
  background:var(--c-bg-2);border-top:1px solid var(--c-line);
  padding:56px 0 24px;margin-top:0;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;}
.footer-brand{font-size:17px;font-weight:700;color:var(--c-ink);margin-bottom:12px;}
.footer-brand em{font-style:normal;color:var(--c-accent);margin:0 2px;}
.footer-col h4{font-size:14px;margin-bottom:16px;color:var(--c-ink);letter-spacing:.3px;}
.footer-col a,.footer-col .muted{
  display:block;font-size:14px;line-height:1.9;color:var(--c-ink-2);
}
.footer-col a:hover{color:var(--c-primary);}
.footer-col p{font-size:14px;color:var(--c-ink-2);max-width:26em;}
.footer-bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--c-line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:var(--c-ink-3);
}

/* ---------- 动效 ---------- */
.js .reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.js .reveal.in{opacity:1;transform:none;}
@keyframes riseIn{from{opacity:0;transform:translateY(16px);}to{opacity:1;transform:none;}}
.js .page-hero h1,.js .page-hero .lede,.js .page-hero .badge-row{animation:riseIn .6s var(--ease) both;}
.js .page-hero .lede{animation-delay:.08s;}
.js .page-hero .badge-row{animation-delay:.16s;}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;}
  .js .reveal{opacity:1;transform:none;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .main-nav{gap:20px;}
  .nav-link{font-size:14px;}
  .page-hero-grid{grid-template-columns:1fr;gap:28px;}
  .page-hero h1{font-size:36px;max-width:none;}
  .scene-grid{grid-template-columns:repeat(2,1fr);}
  .steps-grid{grid-template-columns:repeat(2,1fr);gap:24px;}
  .rec-scroll{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
}
@media (max-width:900px){
  .nav-cta-desktop{display:none;}
  .menu-toggle{display:block;}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:300px;max-width:84vw;
    background:#fff;flex-direction:column;align-items:stretch;gap:0;
    padding:80px 22px 24px;z-index:45;
    transform:translateX(100%);transition:transform .28s var(--ease);
    box-shadow:-8px 0 24px rgba(20,24,26,.08);overflow-y:auto;
  }
  .main-nav.open{transform:translateX(0);}
  .nav-link{padding:14px 0;border-bottom:1px solid var(--c-line);font-size:16px;}
  .nav-link::after{display:none;}
  .nav-link.active{color:var(--c-primary);}
  .nav-cta-mobile{
    display:flex;margin-top:20px;width:100%;
  }
}
@media (max-width:768px){
  :root{--gap-sec:56px;}
  .container{padding:0 18px;}
  .nav-wrap{height:56px;}
  .page-hero{padding:28px 0 36px;}
  .page-hero h1{font-size:28px;}
  .page-hero .lede{font-size:15px;}
  .section-head h2{font-size:20px;}
  .catalog-grid{grid-template-columns:1fr;gap:0;}
  .feature-list{grid-template-columns:1fr;}
  .scene-grid{grid-template-columns:1fr;}
  .steps{padding:28px 20px;}
  .steps-grid{grid-template-columns:1fr;}
  .rec-scroll{
    grid-template-columns:none;grid-auto-flow:column;grid-auto-columns:78%;
    overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px;
    gap:16px;-webkit-overflow-scrolling:touch;
  }
  .rec-card{scroll-snap-align:start;}
  .cta-bar{padding:36px 0;}
  .cta-inner h2{font-size:20px;}
  .field input{min-width:0;width:100%;}
  .subscribe{width:100%;}
  .field{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;gap:24px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:520px){
  .page-hero h1{font-size:26px;}
  .catalog-num{font-size:26px;min-width:44px;}
  .feature-card{flex-direction:column;}
  .feature-thumb{width:100%;flex:0 0 auto;aspect-ratio:16/10;}
  .rec-scroll{grid-auto-columns:86%;}
}

/* roulang page: category2 */
:root{
  --c-ink:#14181A;
  --c-ink-2:#4A5359;
  --c-ink-3:#8A9399;
  --c-primary:#1F4B3F;
  --c-primary-deep:#143229;
  --c-accent:#C2643A;
  --c-bg:#FBFAF7;
  --c-bg-2:#F2EFE9;
  --c-line:#E3DFD6;
  --c-ok:#2E7D5B;
  --c-warn:#B98A1F;
  --c-err:#B3452F;
  --ff-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --ff-serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --r-sm:8px;
  --r:10px;
  --r-lg:14px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(20,24,26,.04);
  --sh-2:0 8px 24px rgba(20,24,26,.08);
  --sp-section:88px;
  --w-container:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--c-bg);
  color:var(--c-ink);
  font-family:var(--ff-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease);}
a:hover{color:var(--c-accent);}
button{font-family:inherit;cursor:pointer;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.2px;}
p{margin:0 0 1.2em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px;}
.container{max-width:var(--w-container);margin:0 auto;padding:0 24px;}
.muted{color:var(--c-ink-2);}

/* ------- header ------- */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:border-color .25s var(--ease),box-shadow .25s var(--ease);
}
.site-header.is-scrolled{
  border-bottom-color:var(--c-line);
  box-shadow:0 2px 12px rgba(20,24,26,.05);
}
.nav-wrap{
  height:68px;
  display:flex;
  align-items:center;
  gap:28px;
}
.logo{
  font-size:18px;
  font-weight:700;
  color:var(--c-ink);
  letter-spacing:-.3px;
  white-space:nowrap;
}
.logo em{color:var(--c-accent);font-style:normal;padding:0 2px;}
.logo:hover{color:var(--c-primary);}
.main-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:12px;
  flex:1;
}
.nav-link{
  position:relative;
  font-size:15px;
  color:var(--c-ink-2);
  padding:6px 0;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--c-accent);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--c-ink);}
.nav-link:hover::after{transform:scaleX(1);}
.nav-link.active{color:var(--c-primary);font-weight:600;}
.nav-link.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--r-sm);
  padding:12px 22px;
  font-size:15px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .12s var(--ease);
}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:transparent;color:var(--c-primary);border-color:var(--c-primary);}
.btn-ghost:hover{background:rgba(31,75,63,.08);color:var(--c-primary);}
.btn-ghost:active{transform:translateY(1px);}
.btn-small{padding:9px 16px;font-size:14px;}
.menu-toggle{
  display:none;
  width:42px;height:42px;
  border:1px solid var(--c-line);
  border-radius:var(--r-sm);
  background:#fff;
  padding:0;
  position:relative;
}
.menu-toggle span{
  position:absolute;
  left:11px;right:11px;
  height:2px;
  background:var(--c-ink);
  border-radius:2px;
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.menu-toggle span:first-child{top:16px;}
.menu-toggle span:last-child{bottom:16px;}
.menu-toggle.is-open span:first-child{transform:translateY(6px) rotate(45deg);}
.menu-toggle.is-open span:last-child{transform:translateY(-6px) rotate(-45deg);}
.drawer-mask{
  position:fixed;inset:0;
  background:rgba(20,24,26,.4);
  opacity:0;visibility:hidden;
  transition:opacity .25s var(--ease),visibility .25s var(--ease);
  z-index:60;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;
  top:0;right:0;bottom:0;
  width:300px;
  max-width:86vw;
  background:#fff;
  z-index:70;
  transform:translateX(102%);
  transition:transform .28s var(--ease);
  display:flex;
  flex-direction:column;
  padding:22px;
  box-shadow:-8px 0 32px rgba(20,24,26,.12);
}
.drawer.is-open{transform:translateX(0);}
.drawer h4{font-size:13px;letter-spacing:.4px;color:var(--c-ink-3);margin-bottom:14px;font-weight:600;}
.drawer nav{display:flex;flex-direction:column;gap:4px;}
.drawer nav a{
  padding:12px 0;
  font-size:16px;
  color:var(--c-ink);
  border-bottom:1px solid var(--c-line);
}
.drawer nav a.active{color:var(--c-primary);font-weight:600;}
.drawer .drawer-cta{margin-top:auto;display:block;width:100%;text-align:center;}

/* ------- hero ------- */
.page-cover{
  position:relative;
  background-color:var(--c-bg-2);
  background-image:linear-gradient(rgba(251,250,247,.86),rgba(242,239,233,.94)),url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--c-line);
}
.page-cover .cover-grid{
  display:grid;
  grid-template-columns:1.15fr .85fr;
  gap:56px;
  align-items:center;
  padding:64px 0 58px;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  letter-spacing:.4px;
  color:var(--c-primary);
  margin-bottom:16px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;background:var(--c-accent);display:block;
}
.cover-title{
  font-family:var(--ff-serif);
  font-size:44px;
  line-height:1.15;
  letter-spacing:-.5px;
  margin-bottom:18px;
  color:var(--c-ink);
}
.cover-sub{
  font-size:16px;
  color:var(--c-ink-2);
  max-width:520px;
  margin-bottom:22px;
}
.badge-row{display:flex;flex-wrap:wrap;gap:10px;}
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:12px;
  line-height:1;
  padding:8px 14px;
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  color:var(--c-ink-2);
  background:rgba(255,255,255,.7);
}
.badge b{color:var(--c-primary);font-weight:600;}
.cover-media{
  border-radius:var(--r-lg);
  overflow:hidden;
  border:1px solid var(--c-line);
  box-shadow:var(--sh-2);
  background:#fff;
}
.cover-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.cover-strip{
  border-top:1px solid var(--c-line);
  background:rgba(255,255,255,.55);
}
.stat-bar{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:24px;
  padding:24px 0;
}
.stat{border-left:1px solid var(--c-line);padding-left:18px;}
.stat:first-child{border-left:0;padding-left:0;}
.stat-num{
  font-family:var(--ff-serif);
  font-size:30px;
  line-height:1.2;
  color:var(--c-ink);
  display:block;
}
.stat-label{font-size:13px;color:var(--c-ink-3);letter-spacing:.3px;}

/* ------- sections ------- */
main{padding-bottom:calc(var(--sp-section) * .6);}
.section{padding:var(--sp-section) 0 0;}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  margin-bottom:34px;
}
.section-title{
  font-size:28px;
  line-height:1.3;
  padding-left:14px;
  position:relative;
}
.section-title::before{
  content:"";
  position:absolute;left:0;top:6px;bottom:6px;
  width:4px;background:var(--c-accent);
  border-radius:2px;
}
.section-desc{margin:12px 0 0 18px;font-size:15px;color:var(--c-ink-2);max-width:640px;}
.link-arrow{
  display:inline-flex;align-items:center;gap:6px;
  font-size:15px;font-weight:600;white-space:nowrap;
}
.link-arrow .arw{transition:transform .2s var(--ease);}
.link-arrow:hover .arw{transform:translateX(4px);}

/* catalog */
.catalog-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:0 48px;
  border-top:1px solid var(--c-line);
}
.catalog-item{
  display:flex;
  align-items:flex-start;
  gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--c-line);
  transition:background .2s var(--ease);
}
.catalog-item:hover{background:rgba(242,239,233,.55);}
.catalog-num{
  font-family:var(--ff-serif);
  font-size:32px;
  line-height:1;
  color:var(--c-accent);
  opacity:.9;
  min-width:46px;
  transition:color .2s var(--ease);
}
.catalog-item:hover .catalog-num{color:var(--c-primary);}
.cat-title{font-size:18px;line-height:1.45;margin-bottom:6px;}
.cat-desc{font-size:14px;color:var(--c-ink-2);margin:0;}
.cat-go{margin-left:auto;color:var(--c-ink-3);font-size:18px;transition:transform .2s var(--ease),color .2s var(--ease);}
.catalog-item:hover .cat-go{transform:translateX(4px);color:var(--c-primary);}

/* horizontal card flow */
.hcard-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:24px;
}
.hcard{
  display:grid;
  grid-template-columns:190px 1fr;
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r);
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.hcard:hover{transform:translateY(-3px);box-shadow:var(--sh-2);border-color:#D9D3C6;}
.hcard-media{overflow:hidden;background:var(--c-bg-2);}
.hcard-media img{width:100%;height:100%;min-height:180px;object-fit:cover;transition:transform .35s var(--ease);}
.hcard:hover .hcard-media img{transform:scale(1.03);}
.hcard-body{padding:20px;display:flex;flex-direction:column;gap:10px;}
.cat-tag{
  display:inline-block;
  align-self:flex-start;
  font-size:12px;
  line-height:1;
  padding:6px 9px;
  border-radius:4px;
  background:rgba(31,75,63,.08);
  color:var(--c-primary);
  letter-spacing:.3px;
}
.hcard-title{font-size:18px;line-height:1.45;}
.hcard-text{
  font-size:14px;
  color:var(--c-ink-2);
  margin:0;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.hcard-foot{
  margin-top:auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  font-size:13px;
  color:var(--c-ink-3);
  letter-spacing:.3px;
  padding-top:10px;
  border-top:1px solid var(--c-line);
}
.hcard-foot .go{color:var(--c-primary);font-weight:600;display:inline-flex;align-items:center;gap:5px;}
.hcard:hover .hcard-foot .go .arw{transform:translateX(4px);}
.hcard-foot .go .arw{transition:transform .2s var(--ease);}

/* method blocks */
.method-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.method-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r);
  padding:26px 22px;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.method-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.method-num{
  font-family:var(--ff-serif);
  font-size:24px;
  color:var(--c-accent);
  display:block;
  margin-bottom:12px;
}
.method-card h3{font-size:17px;margin-bottom:8px;}
.method-card p{font-size:14px;color:var(--c-ink-2);margin:0;}
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px;}
.tag{
  font-size:13px;
  padding:7px 13px;
  border-radius:var(--r-pill);
  border:1px solid var(--c-line);
  background:#fff;
  color:var(--c-ink-2);
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.tag:hover{border-color:var(--c-primary);color:var(--c-primary);}

/* checklist */
.check-panel{
  background:var(--c-bg-2);
  border:1px solid var(--c-line);
  border-radius:var(--r-lg);
  padding:38px 34px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:30px;
}
.check-item h3{
  font-size:16px;
  margin-bottom:10px;
  padding-top:14px;
  position:relative;
}
.check-item h3::before{
  content:"";
  position:absolute;top:0;left:0;
  width:26px;height:2px;background:var(--c-accent);
}
.check-item p{font-size:14px;color:var(--c-ink-2);margin:0;}

/* faq */
.faq-list{max-width:880px;border-top:1px solid var(--c-line);}
.faq-item{border-bottom:1px solid var(--c-line);}
.faq-q{
  width:100%;
  background:transparent;
  border:0;
  padding:22px 4px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  font-size:16px;
  font-weight:600;
  color:var(--c-ink);
  text-align:left;
  transition:color .2s var(--ease);
}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{
  position:relative;
  width:18px;height:18px;
  flex:none;
}
.faq-icon::before,.faq-icon::after{
  content:"";
  position:absolute;
  background:var(--c-primary);
  transition:transform .26s var(--ease),opacity .26s var(--ease);
}
.faq-icon::before{left:0;top:8px;width:18px;height:2px;}
.faq-icon::after{left:8px;top:0;width:2px;height:18px;}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height .26s var(--ease);
}
.faq-item.is-open{border-left:2px solid var(--c-accent);}
.faq-item.is-open .faq-q{padding-left:18px;}
.faq-a-inner{padding:0 4px 24px 18px;font-size:15px;color:var(--c-ink-2);margin:0;}

/* reco */
.reco-track{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
}
.reco-card{
  background:#fff;
  border:1px solid var(--c-line);
  border-radius:var(--r);
  padding:20px;
  box-shadow:var(--sh-1);
  display:flex;
  flex-direction:column;
  gap:10px;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.reco-card:hover{transform:translateY(-3px);box-shadow:var(--sh-2);}
.reco-card h3{font-size:16px;line-height:1.45;}
.reco-meta{font-size:13px;color:var(--c-ink-3);letter-spacing:.3px;display:flex;gap:10px;}

/* cta bar */
.cta-bar{
  margin-top:var(--sp-section);
  background:var(--c-bg-2);
  border-top:1px solid var(--c-line);
  border-bottom:1px solid var(--c-line);
}
.cta-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:30px;
  padding:46px 0;
}
.cta-copy h2{font-size:24px;margin-bottom:8px;}
.cta-copy p{margin:0;font-size:15px;color:var(--c-ink-2);}
.cta-buttons{display:flex;align-items:center;gap:14px;flex:none;}
.cta-divider{width:1px;height:34px;background:var(--c-line);}

/* footer */
.site-footer{
  background:var(--c-bg-2);
  border-top:1px solid var(--c-line);
  padding:60px 0 26px;
  font-size:14px;
  line-height:1.9;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:40px;
  padding-bottom:40px;
  border-bottom:1px solid var(--c-line);
}
.footer-brand{font-size:18px;font-weight:700;color:var(--c-ink);margin-bottom:12px;}
.footer-brand em{color:var(--c-accent);font-style:normal;padding:0 2px;}
.footer-col h4{font-size:15px;margin-bottom:12px;color:var(--c-ink);}
.footer-col a,.footer-col span{display:block;color:var(--c-ink-2);}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-decoration-color:var(--c-accent);}
.footer-bottom{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding-top:22px;
  font-size:12px;
  color:var(--c-ink-3);
}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .55s var(--ease),transform .55s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
@keyframes lineUp{
  from{opacity:0;transform:translateY(16px);}
  to{opacity:1;transform:none;}
}
.anim-line{opacity:0;animation:lineUp .6s var(--ease) forwards;}
.anim-line:nth-child(1){animation-delay:.05s;}
.anim-line:nth-child(2){animation-delay:.13s;}
.anim-line:nth-child(3){animation-delay:.21s;}
.anim-line:nth-child(4){animation-delay:.29s;}

/* responsive */
@media (max-width:1024px){
  :root{--sp-section:64px;}
  .main-nav{gap:20px;}
  .cover-title{font-size:36px;}
  .cover-grid{grid-template-columns:1fr;gap:32px;padding:48px 0 44px;}
  .cover-media{max-width:560px;}
  .hcard-grid{grid-template-columns:1fr;}
  .method-grid{grid-template-columns:1fr 1fr;}
  .check-panel{grid-template-columns:1fr 1fr;padding:30px 24px;}
  .reco-track{grid-template-columns:repeat(2,1fr);}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:768px){
  .container{padding:0 18px;}
  .main-nav{display:none;}
  .nav-wrap{height:56px;gap:12px;}
  .nav-cta-desktop{display:none;}
  .menu-toggle{display:block;}
  .logo{font-size:17px;}
  .cover-title{font-size:28px;}
  .cover-sub{font-size:15px;}
  .stat-bar{grid-template-columns:1fr 1fr;gap:18px;}
  .stat{border-left:0;padding-left:0;border-top:1px solid var(--c-line);padding-top:14px;}
  .stat:first-child,.stat:nth-child(2){border-top:0;padding-top:0;}
  .section-title{font-size:20px;}
  .section-head{flex-direction:column;align-items:flex-start;gap:14px;}
  .catalog-grid{grid-template-columns:1fr;gap:0;}
  .catalog-num{font-size:26px;min-width:38px;}
  .hcard{grid-template-columns:1fr;}
  .hcard-media img{min-height:0;aspect-ratio:16/9;}
  .method-grid{grid-template-columns:1fr;}
  .check-panel{grid-template-columns:1fr;}
  .reco-track{
    display:flex;
    overflow-x:auto;
    gap:16px;
    scroll-snap-type:x mandatory;
    padding-bottom:8px;
    -webkit-overflow-scrolling:touch;
  }
  .reco-card{flex:0 0 78%;scroll-snap-align:start;}
  .cta-inner{flex-direction:column;align-items:flex-start;padding:36px 0;}
  .cta-buttons{width:100%;flex-wrap:wrap;}
  .cta-divider{display:none;}
  .footer-grid{grid-template-columns:1fr;gap:26px;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px;}
}
@media (max-width:480px){
  .cover-title{font-size:25px;}
  .btn{padding:12px 18px;font-size:14px;}
  .hcard-body{padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category3 */
:root{
  --c-ink:#14181A;
  --c-ink-2:#4A5359;
  --c-ink-3:#8A9399;
  --c-primary:#1F4B3F;
  --c-primary-deep:#143229;
  --c-accent:#C2643A;
  --c-bg:#FBFAF7;
  --c-bg-2:#F2EFE9;
  --c-line:#E3DFD6;
  --c-ok:#2E7D5B;
  --c-warn:#B98A1F;
  --c-err:#B3452F;
  --radius-sm:8px;
  --radius:10px;
  --radius-lg:14px;
  --shadow-1:0 1px 2px rgba(20,24,26,.04);
  --shadow-2:0 8px 24px rgba(20,24,26,.08);
  --ease:cubic-bezier(.2,.7,.3,1);
  --sp-section:88px;
  --font-sans:-apple-system,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC",serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--c-bg);color:var(--c-ink);font-family:var(--font-sans);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;object-fit:cover}
a{color:var(--c-primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--c-primary-deep)}
h1,h2,h3,h4{margin:0;font-weight:600;line-height:1.3}
p{margin:0 0 1.1em}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer}
:focus-visible{outline:2px solid var(--c-accent);outline-offset:2px}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.muted{color:var(--c-ink-3);font-size:13px;letter-spacing:.3px}

/* ---------- header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid transparent;transition:border-color .22s var(--ease),box-shadow .22s var(--ease)}
.site-header.is-stuck{border-bottom-color:var(--c-line);box-shadow:0 1px 2px rgba(20,24,26,.03)}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.logo{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:.2px}
.logo em{font-style:normal;color:var(--c-accent);margin:0 4px}
.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{position:relative;font-size:15px;color:var(--c-ink-2);padding:6px 0;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;background:var(--c-accent);transition:right .24s var(--ease)}
.nav-link:hover{color:var(--c-ink)}
.nav-link:hover::after{right:0}
.nav-link.active{color:var(--c-primary);font-weight:600}
.nav-link.active::after{right:0;background:var(--c-primary)}
.nav-actions{display:flex;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:var(--radius-sm);font-size:15px;font-weight:600;padding:12px 22px;transition:background .2s var(--ease),color .2s var(--ease),transform .12s var(--ease),border-color .2s var(--ease)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-deep);color:#fff}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:rgba(31,75,63,.08);color:var(--c-primary-deep)}
.btn-sm{padding:9px 16px;font-size:14px}
.menu-toggle{display:none;width:42px;height:38px;background:transparent;border:1px solid var(--c-line);border-radius:var(--radius-sm);padding:0;align-items:center;justify-content:center;flex-direction:column;gap:5px}
.menu-toggle span{display:block;width:18px;height:2px;background:var(--c-ink);border-radius:2px}

/* drawer */
.drawer-mask{position:fixed;inset:0;background:rgba(20,24,26,.4);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:55}
.drawer{position:fixed;top:0;right:0;height:100%;width:min(84vw,340px);background:#fff;z-index:60;transform:translateX(100%);transition:transform .28s var(--ease);display:flex;flex-direction:column;padding:22px 20px}
.drawer.open{transform:translateX(0)}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-brand{font-size:17px;font-weight:700}
.drawer-brand em{font-style:normal;color:var(--c-accent);margin:0 4px}
.drawer-close{background:transparent;border:1px solid var(--c-line);border-radius:var(--radius-sm);width:36px;height:34px;font-size:16px;color:var(--c-ink-2)}
.drawer-nav{display:flex;flex-direction:column;gap:4px;flex:1}
.drawer-nav a{padding:13px 10px;border-radius:var(--radius-sm);color:var(--c-ink-2);font-size:15px;border-bottom:1px solid var(--c-line)}
.drawer-nav a.active{color:var(--c-primary);font-weight:600;background:rgba(31,75,63,.06)}
.drawer-foot{margin-top:18px}
.drawer-foot .btn{width:100%}

/* ---------- hero (窄版) ---------- */
.page-hero{background:var(--c-bg-2);border-bottom:1px solid var(--c-line);padding:56px 0 52px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.breadcrumb{font-size:13px;color:var(--c-ink-3);letter-spacing:.3px;margin-bottom:16px}
.breadcrumb a{color:var(--c-ink-2)}
.breadcrumb a:hover{color:var(--c-primary)}
.breadcrumb span{margin:0 8px;color:var(--c-line)}
.page-hero h1{font-family:var(--font-serif);font-size:40px;line-height:1.18;letter-spacing:-.5px;margin-bottom:16px}
.page-hero .sub{font-size:17px;color:var(--c-ink-2);max-width:520px;margin-bottom:22px}
.badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--c-line);background:#fff;border-radius:999px;padding:5px 13px;font-size:12px;color:var(--c-ink-2);letter-spacing:.3px}
.badge b{color:var(--c-primary);font-weight:600}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px}
.hero-visual{position:relative}
.hero-visual img{width:100%;aspect-ratio:4/3;border-radius:var(--radius-lg);border:1px solid var(--c-line);box-shadow:var(--shadow-1)}
.hero-visual .hero-tag{position:absolute;left:16px;bottom:16px;background:rgba(251,250,247,.94);border:1px solid var(--c-line);border-radius:var(--radius-sm);padding:8px 14px;font-size:13px;color:var(--c-ink-2)}

/* ---------- sections ---------- */
.section{padding:var(--sp-section) 0}
.section.tight{padding:64px 0}
.section.alt{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line)}
.sec-head{margin-bottom:32px}
.sec-head .eyebrow{font-size:13px;letter-spacing:1.4px;color:var(--c-accent);text-transform:uppercase;margin-bottom:10px}
.sec-title{font-size:28px;padding-left:16px;border-left:4px solid var(--c-accent);line-height:1.25}
.sec-desc{margin-top:12px;color:var(--c-ink-2);font-size:15px;max-width:760px}
.sec-head.row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.arrow-link{display:inline-flex;align-items:center;gap:6px;font-weight:600;font-size:15px}
.arrow-link i{font-style:normal;transition:transform .22s var(--ease)}
.arrow-link:hover i{transform:translateX(4px)}

/* stats strip */
.stats-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--c-line);border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;margin-top:34px}
.stats-strip div{background:#fff;padding:20px 22px}
.stat-num{font-family:var(--font-serif);font-size:30px;color:var(--c-primary);line-height:1.1}
.stat-label{font-size:13px;color:var(--c-ink-3);margin-top:6px;letter-spacing:.3px}

/* catalog 编号目录 */
.catalog-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.catalog-item{display:flex;align-items:flex-start;gap:18px;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);transition:box-shadow .22s var(--ease),transform .22s var(--ease),border-color .22s var(--ease)}
.catalog-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:#d8d2c6}
.catalog-num{font-family:var(--font-serif);font-size:32px;line-height:1;color:var(--c-accent);opacity:.9;transition:color .22s var(--ease);min-width:52px}
.catalog-item:hover .catalog-num{color:var(--c-primary)}
.catalog-body h3{font-size:18px;margin-bottom:6px}
.catalog-body p{font-size:14px;color:var(--c-ink-2);margin:0 0 10px}
.catalog-link{font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px}
.catalog-link i{font-style:normal;transition:transform .22s var(--ease)}
.catalog-item:hover .catalog-link i{transform:translateX(4px)}

/* featured 大图 + 编号并列 */
.feature-row{display:grid;grid-template-columns:5fr 7fr;gap:36px;align-items:center;padding:28px 0;border-top:1px solid var(--c-line)}
.feature-row:first-of-type{border-top:0;padding-top:0}
.feature-media{overflow:hidden;border-radius:var(--radius-lg);border:1px solid var(--c-line);box-shadow:var(--shadow-1)}
.feature-media img{width:100%;aspect-ratio:16/10;transition:transform .26s var(--ease)}
.feature-row:hover .feature-media img{transform:scale(1.03)}
.feature-list{display:flex;flex-direction:column;gap:20px}
.feature-item{display:grid;grid-template-columns:56px 1fr;gap:16px;align-items:start}
.feature-item .num{font-family:var(--font-serif);font-size:28px;color:var(--c-accent);line-height:1.1}
.feature-item h3{font-size:18px;margin-bottom:6px}
.feature-item p{font-size:14px;color:var(--c-ink-2);margin:0 0 8px}
.tag-row{display:flex;flex-wrap:wrap;gap:8px}
.tag{font-size:12px;letter-spacing:.3px;color:var(--c-primary);background:rgba(31,75,63,.08);border-radius:4px;padding:3px 9px}
.tag.warn{color:var(--c-warn);background:rgba(185,138,31,.1)}
.tag.ok{color:var(--c-ok);background:rgba(46,125,91,.1)}

/* search-words 区块 */
.split{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.panel{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-1)}
.panel h3{font-size:18px;margin-bottom:12px}
.check-list li{position:relative;padding-left:20px;font-size:15px;color:var(--c-ink-2);margin-bottom:12px;line-height:1.7}
.check-list li::before{content:"";position:absolute;left:0;top:9px;width:7px;height:7px;background:var(--c-accent);border-radius:1px}
.word-list li{display:flex;justify-content:space-between;gap:16px;font-size:15px;padding:11px 0;border-bottom:1px dashed var(--c-line);color:var(--c-ink-2)}
.word-list li:last-child{border-bottom:0}
.word-list b{color:var(--c-ink);font-weight:600}

/* related 横滑 */
.related-scroll{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.mini-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow-1);transition:transform .22s var(--ease),box-shadow .22s var(--ease)}
.mini-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}
.mini-card .cat{font-size:13px;color:var(--c-accent);letter-spacing:.3px;margin-bottom:8px}
.mini-card h3{font-size:16px;margin-bottom:10px;line-height:1.5}
.mini-card .meta{font-size:13px;color:var(--c-ink-3)}

/* FAQ */
.faq-list{border-top:1px solid var(--c-line)}
.faq-item{border-bottom:1px solid var(--c-line)}
.faq-q{width:100%;background:transparent;border:0;border-left:2px solid transparent;text-align:left;font-size:16px;font-weight:600;color:var(--c-ink);padding:20px 46px 20px 16px;position:relative;transition:border-color .22s var(--ease),color .22s var(--ease)}
.faq-q:hover{color:var(--c-primary)}
.faq-item.open .faq-q{border-left-color:var(--c-accent);color:var(--c-primary)}
.faq-q .ico{position:absolute;right:16px;top:50%;width:16px;height:16px;transform:translateY(-50%);transition:transform .26s var(--ease)}
.faq-q .ico::before,.faq-q .ico::after{content:"";position:absolute;background:var(--c-ink-2);border-radius:2px}
.faq-q .ico::before{left:0;top:7px;width:16px;height:2px}
.faq-q .ico::after{left:7px;top:0;width:2px;height:16px}
.faq-item.open .faq-q .ico{transform:translateY(-50%) rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease)}
.faq-a p{padding:0 46px 22px 16px;margin:0;color:var(--c-ink-2);font-size:15px}

/* CTA bar */
.cta-bar{background:var(--c-bg-2);border-top:1px solid var(--c-line);border-bottom:1px solid var(--c-line);padding:52px 0}
.cta-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.cta-grid h2{font-size:26px;margin-bottom:10px}
.cta-grid p{color:var(--c-ink-2);font-size:15px;margin:0}
.form-field{margin-bottom:14px}
.form-field label{display:block;font-size:13px;color:var(--c-ink-2);margin-bottom:7px}
.form-field input{width:100%;background:#fff;border:1px solid var(--c-line);border-radius:var(--radius-sm);padding:12px 14px;font-size:15px;font-family:inherit;color:var(--c-ink);transition:border-color .2s var(--ease),box-shadow .2s var(--ease)}
.form-field input::placeholder{color:#a9b0b4}
.form-field input:focus{outline:none;border-color:var(--c-primary);box-shadow:0 0 0 2px rgba(31,75,63,.12)}
.form-note{font-size:13px;margin-top:10px;color:var(--c-ink-3)}
.form-note.ok{color:var(--c-ok);background:rgba(46,125,91,.08);border-radius:var(--radius-sm);padding:10px 12px}
.form-note.err{color:var(--c-err)}

/* footer */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-line);padding:56px 0 24px;font-size:14px;line-height:1.9}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
.footer-brand{font-size:17px;font-weight:700;margin-bottom:12px}
.footer-brand em{font-style:normal;color:var(--c-accent);margin:0 4px}
.footer-col h4{font-size:15px;margin-bottom:12px}
.footer-col a{display:block;color:var(--c-ink-2);margin-bottom:8px}
.footer-col a:hover{color:var(--c-primary);text-decoration:underline;text-decoration-color:var(--c-accent);text-underline-offset:3px}
.footer-col .muted{display:block;margin-bottom:6px}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:40px;padding-top:18px;border-top:1px solid var(--c-line);font-size:12px;color:var(--c-ink-3)}

/* reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
.hero-line{opacity:0;transform:translateY(16px);animation:heroIn .6s var(--ease) forwards}
.hero-line.d1{animation-delay:.05s}
.hero-line.d2{animation-delay:.13s}
.hero-line.d3{animation-delay:.21s}
@keyframes heroIn{to{opacity:1;transform:none}}

/* responsive */
@media (max-width:1024px){
  :root{--sp-section:72px}
  .main-nav{gap:20px}
  .hero-grid{grid-template-columns:1fr;gap:32px}
  .page-hero h1{font-size:34px}
  .feature-row{grid-template-columns:1fr;gap:22px}
  .related-scroll{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px}
}
@media (max-width:860px){
  .main-nav{display:none}
  .nav-cta-desktop{display:none}
  .menu-toggle{display:flex}
  .catalog-grid{grid-template-columns:1fr}
  .split{grid-template-columns:1fr}
  .cta-grid{grid-template-columns:1fr;gap:26px}
}
@media (max-width:768px){
  .container{padding:0 18px}
  .nav-wrap{height:56px}
  .page-hero{padding:38px 0 36px}
  .page-hero h1{font-size:28px}
  .page-hero .sub{font-size:15px}
  .sec-title{font-size:20px;padding-left:12px;border-left-width:3px}
  .stats-strip{grid-template-columns:1fr 1fr}
  .feature-item{grid-template-columns:44px 1fr;gap:12px}
}
@media (max-width:520px){
  .related-scroll{grid-template-columns:1fr}
  .stats-strip{grid-template-columns:1fr 1fr}
  .hero-actions .btn{width:100%}
  .footer-bottom{flex-direction:column;gap:6px}
}