/* roulang page: index */
:root{
  --ink:#0E211C;
  --ink-2:#16332B;
  --lime:#C8F04F;
  --lime-deep:#A9D63A;
  --paper:#F6F3EC;
  --paper-2:#EDE8DD;
  --line:rgba(14,33,28,.14);
  --line-strong:rgba(14,33,28,.30);
  --muted:#5C6B64;
  --coral:#D9502C;
  --white:#FFFFFF;
  --radius:2px;
  --shadow-1:0 1px 0 rgba(14,33,28,.06);
  --shadow-2:0 10px 24px -12px rgba(14,33,28,.25);
  --ease:cubic-bezier(.22,.61,.36,1);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:var(--ink);text-decoration:none}
a:hover{color:var(--ink)}
p{margin:0 0 1.1em;max-width:38em}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:700;color:var(--ink);letter-spacing:-.01em}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:104px 0}
.section--tight{padding:72px 0}
.section--alt{background:var(--paper-2)}
.section--line{border-top:1px solid var(--line)}
.eyebrow{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:18px;
}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--lime)}
h1{font-size:clamp(2.5rem,5.4vw,4.5rem);line-height:1.08;letter-spacing:-.02em}
h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.2}
h3{font-size:1.25rem;line-height:1.45;font-family:var(--font-sans);font-weight:700}
.lead{font-size:1.0625rem;color:var(--muted);max-width:34em}
.small{font-size:.8125rem;color:var(--muted)}
.mono{font-family:var(--font-mono)}

/* ---------- Header ---------- */
.ay-header{
  position:sticky;top:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.ay-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.ay-header-inner{
  display:flex;align-items:center;justify-content:space-between;
  height:76px;gap:24px;
}
.ay-logo{display:flex;align-items:center;gap:12px;flex-shrink:0}
.ay-logo-mark{
  position:relative;width:24px;height:24px;flex:none;
  background:var(--ink);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.ay-logo-mark::after{
  content:"";position:absolute;right:0;bottom:0;width:8px;height:8px;background:var(--lime);
}
.ay-logo-text{display:flex;flex-direction:column;line-height:1.15}
.ay-logo-text .t1{font-family:var(--font-display);font-size:1.0625rem;font-weight:700;letter-spacing:.01em}
.ay-logo-text .t2{font-family:var(--font-mono);font-size:.625rem;letter-spacing:.28em;color:var(--muted);text-transform:uppercase}
.ay-nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.ay-nav a{
  position:relative;font-size:.9375rem;font-weight:500;color:var(--ink);
  padding:6px 0;transition:color .18s var(--ease);
}
.ay-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;transition:transform .18s var(--ease);
}
.ay-nav a:hover::after,.ay-nav a:focus-visible::after{transform:scaleX(1)}
.ay-nav a.is-active{font-weight:700}
.ay-nav a.is-active::after{transform:scaleX(1)}
.ay-header-cta{display:inline-flex;align-items:center;gap:8px;flex:none}
.ay-burger{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:transparent;
  border-radius:var(--radius);align-items:center;justify-content:center;cursor:pointer;
}
.ay-burger span{display:block;width:20px;height:2px;background:var(--ink);position:relative;transition:.2s var(--ease)}
.ay-burger span::before,.ay-burger span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink);transition:.2s var(--ease);
}
.ay-burger span::before{top:-6px}
.ay-burger span::after{top:6px}
.ay-mobile{
  position:fixed;inset:0;background:var(--paper);z-index:80;
  display:none;flex-direction:column;padding:28px 24px 40px;overflow-y:auto;
}
.ay-mobile.is-open{display:flex}
.ay-mobile-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px}
.ay-mobile-close{
  width:44px;height:44px;border:1px solid var(--line);background:transparent;
  border-radius:var(--radius);font-size:1.25rem;line-height:1;cursor:pointer;color:var(--ink);
}
.ay-mobile-nav{display:flex;flex-direction:column;gap:2px;border-top:1px solid var(--line)}
.ay-mobile-nav a{
  font-family:var(--font-display);font-size:1.5rem;font-weight:700;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.ay-mobile-foot{margin-top:auto;padding-top:32px}
.ay-mobile-foot .small{display:block;margin-top:14px;line-height:1.7}

/* ---------- Buttons ---------- */
.ay-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 24px;border-radius:var(--radius);border:1px solid transparent;
  font-size:.9375rem;font-weight:700;cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease),border-color .18s var(--ease);
  min-height:48px;
}
.ay-btn--primary{background:var(--lime);color:var(--ink)}
.ay-btn--primary:hover{background:var(--lime-deep);color:var(--ink);transform:translateY(-1px)}
.ay-btn--ghost{background:transparent;border-color:var(--ink);color:var(--ink)}
.ay-btn--ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.ay-btn--light{background:var(--lime);color:var(--ink)}
.ay-btn--light:hover{background:var(--lime-deep);color:var(--ink)}
.ay-textlink{
  display:inline-flex;align-items:center;gap:8px;font-size:.9375rem;font-weight:700;
  border-bottom:1px solid var(--ink);padding-bottom:2px;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.ay-textlink i{transition:transform .18s var(--ease)}
.ay-textlink:hover{border-bottom-color:var(--lime)}
.ay-textlink:hover i{transform:translateX(4px)}

/* ---------- Hero ---------- */
.ay-hero{padding:64px 0 0}
.ay-hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.ay-hero-copy h1{margin-bottom:22px}
.ay-hero-copy h1 em{font-style:normal;display:block;color:var(--ink)}
.ay-hero-sub{font-size:1.125rem;color:var(--muted);max-width:30em;margin-bottom:32px}
.ay-hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:44px}
.ay-stats{
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);padding-top:26px;gap:20px;
}
.ay-stat .num{font-family:var(--font-mono);font-size:1.75rem;font-weight:700;line-height:1.2;display:block}
.ay-stat .num span{font-size:.875rem;color:var(--muted);margin-left:4px;font-family:var(--font-sans);font-weight:400}
.ay-stat .lbl{font-size:.8125rem;color:var(--muted);display:block;margin-top:4px}
.ay-hero-media{position:relative}
.ay-hero-media::before{
  content:"";position:absolute;right:-12px;bottom:-12px;width:58%;height:52%;
  background:var(--lime);z-index:0;
}
.ay-hero-media img{
  position:relative;z-index:1;width:100%;aspect-ratio:4/5;object-fit:cover;
  border-radius:var(--radius);border:1px solid var(--line);
}
.ay-scorecard{
  position:absolute;z-index:2;left:-28px;bottom:32px;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 20px;max-width:290px;box-shadow:var(--shadow-2);
}
.ay-scorecard .meta{display:flex;align-items:center;gap:10px;font-size:.75rem;color:var(--muted);margin-bottom:8px}
.ay-scorecard .meta .dot{width:6px;height:6px;background:var(--lime);display:inline-block}
.ay-scorecard h3{font-size:1rem;line-height:1.5;font-weight:700}
.ay-hero-strip{
  margin-top:64px;border-top:1px solid var(--line);padding:16px 0;
  display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;
}
.ay-hero-strip .small{letter-spacing:.02em}
.ay-scrolltip{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted)}
.ay-scrolltip i{animation:none}

/* ---------- Chips / tags ---------- */
.ay-chip{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;border:1px solid var(--line);
  background:var(--paper);font-size:.75rem;color:var(--ink-2);line-height:1.6;
}
.ay-chip--solid{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.ay-mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:52px;height:52px;background:var(--ink);color:var(--lime);
  font-family:var(--font-mono);font-size:.9375rem;font-weight:700;letter-spacing:.04em;
  border-radius:var(--radius);margin-bottom:22px;
}

/* ---------- Claim ---------- */
.ay-claim{display:grid;grid-template-columns:4fr 8fr;gap:56px}
.ay-claim-right p{font-size:1.0625rem;line-height:1.9}
.ay-points{margin-top:28px;display:grid;gap:0}
.ay-point{
  display:grid;grid-template-columns:3px 1fr;gap:20px;
  padding:20px 0;border-top:1px solid var(--line);
}
.ay-point .bar{background:var(--lime);width:3px;border-radius:2px;align-self:stretch}
.ay-point h3{font-size:1.0625rem;margin-bottom:6px}
.ay-point p{margin:0;font-size:.9375rem;color:var(--muted);max-width:none}

/* ---------- Story ---------- */
.ay-story{display:grid;gap:64px}
.ay-story-row{display:grid;grid-template-columns:5fr 7fr;gap:48px;align-items:center}
.ay-story-row.reverse{grid-template-columns:7fr 5fr}
.ay-story-row.reverse .ay-story-text{order:2}
.ay-story-row.reverse .ay-story-media{order:1}
.ay-story-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--radius);border:1px solid var(--line)}
.ay-story-text h2{margin-bottom:18px;font-size:clamp(1.5rem,2.4vw,2rem)}
.ay-story-text p{color:var(--ink-2)}
.ay-years{border-top:1px solid var(--line);display:flex;margin-top:16px}
.ay-year{flex:1;position:relative;padding-top:16px}
.ay-year::before{content:"";position:absolute;top:-1px;left:0;width:1px;height:10px;background:var(--ink)}
.ay-year .y{font-family:var(--font-mono);font-size:.875rem;font-weight:700;display:block}
.ay-year .d{font-size:.75rem;color:var(--muted)}

/* ---------- Featured ---------- */
.ay-section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:40px}
.ay-section-head h2{max-width:22em}
.ay-section-head p{margin:10px 0 0;color:var(--muted);font-size:.9375rem}
.ay-featured{display:grid;grid-template-columns:7fr 5fr;gap:28px}
.ay-card{
  display:flex;flex-direction:column;background:var(--paper);border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color .32s var(--ease),box-shadow .32s var(--ease),transform .32s var(--ease);
}
.ay-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.ay-card-img{overflow:hidden;position:relative}
.ay-card-img img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s var(--ease)}
.ay-card:hover .ay-card-img img{transform:scale(1.04)}
.ay-card--tall .ay-card-img img{aspect-ratio:16/11}
.ay-card-body{padding:22px 24px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.ay-card-body h3{font-size:1.3125rem;line-height:1.45}
.ay-card:hover .ay-card-body h3{text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:3px;text-underline-offset:4px}
.ay-card-body p{margin:0;font-size:.9375rem;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ay-card-meta{display:flex;align-items:center;gap:12px;font-size:.75rem;color:var(--muted);margin-top:auto;padding-top:6px}
.ay-card-stack{display:grid;grid-template-rows:1fr 1fr;gap:28px}
.ay-card--horiz{flex-direction:row;align-items:stretch}
.ay-card--horiz .ay-card-img{flex:0 0 42%}
.ay-card--horiz .ay-card-img img{height:100%;aspect-ratio:auto;min-height:100%}
.ay-card--horiz .ay-card-body{padding:18px 20px}

/* ---------- News list ---------- */
.ay-news{display:grid;gap:0;border-top:1px solid var(--line)}
.ay-news-row{
  display:grid;grid-template-columns:180px 1fr 40px;gap:28px;align-items:start;
  padding:26px 20px;margin:0 -20px;border-bottom:1px solid var(--line);
  border-radius:var(--radius);transition:background .18s var(--ease);
}
.ay-news-row:hover{background:var(--paper-2)}
.ay-news-meta{display:flex;flex-direction:column;gap:8px;align-items:flex-start}
.ay-news-date{font-family:var(--font-mono);font-size:.8125rem;color:var(--muted)}
.ay-news-body h3{font-size:1.125rem;line-height:1.5;margin-bottom:6px}
.ay-news-row:hover .ay-news-body h3{text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:3px;text-underline-offset:4px}
.ay-news-body p{margin:0;font-size:.9375rem;color:var(--muted);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.ay-news-arrow{font-size:1.25rem;color:var(--ink);justify-self:end;transition:transform .18s var(--ease)}
.ay-news-row:hover .ay-news-arrow{transform:translateX(4px)}
.ay-empty{
  border:1px dashed var(--line-strong);border-radius:var(--radius);
  padding:44px 24px;text-align:center;color:var(--muted);background:var(--paper-2);
}
.ay-empty i{display:block;font-size:1.5rem;margin-bottom:10px;color:var(--ink-2)}

/* ---------- Proof ---------- */
.ay-proof{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.ay-proof-nums{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line)}
.ay-proof-num{padding:26px 18px 0 0;border-right:1px solid var(--line)}
.ay-proof-num:last-child{border-right:0}
.ay-proof-num .n{font-family:var(--font-mono);font-size:clamp(1.75rem,3vw,2.5rem);font-weight:700;line-height:1.1;display:block}
.ay-proof-num .t{font-size:.75rem;color:var(--muted);display:block;margin-top:8px;line-height:1.6}
.ay-logowall{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px}
.ay-logowall span{
  border:1px solid var(--line);border-radius:var(--radius);padding:10px 16px;
  font-size:.8125rem;color:var(--ink-2);opacity:.55;transition:opacity .18s var(--ease);
}
.ay-logowall span:hover{opacity:1}

/* ---------- FAQ ---------- */
.ay-faq{display:grid;grid-template-columns:8fr 4fr;gap:56px;align-items:start}
.ay-faq-side{background:var(--paper-2);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.ay-faq-side h3{font-size:1.0625rem;margin-bottom:8px}
.ay-faq-side p{font-size:.875rem;color:var(--muted);margin-bottom:18px}
.ay-acc{border:0;background:transparent;margin:0}
.ay-acc .accordion-item{border:0;background:transparent}
.ay-acc .accordion-title{
  display:flex;justify-content:space-between;align-items:center;gap:20px;
  padding:22px 0;border-top:1px solid var(--line);border-bottom:0;
  background:transparent;color:var(--ink);
}
.ay-acc .accordion-title:hover,.ay-acc .accordion-title:focus{background:transparent;color:var(--ink)}
.ay-acc .accordion-title h3{font-size:1.125rem;font-weight:700;margin:0}
.ay-acc .accordion-title::before{
  content:"+";font-family:var(--font-mono);font-size:1.25rem;color:var(--ink);
  order:2;float:none;margin:0;transition:transform .2s var(--ease);
}
.ay-acc .accordion-title[aria-expanded="true"]::before{content:"−";transform:rotate(180deg)}
.ay-acc .accordion-content{
  padding:0 0 24px;border:0;background:transparent;color:var(--muted);
  border-left:0;position:relative;
}
.ay-acc .accordion-content p{margin:0 0 .8em;font-size:1rem;line-height:1.8;padding-left:18px;border-left:2px solid var(--lime)}
.ay-acc .accordion-content p:last-child{margin-bottom:0}

/* ---------- CTA ---------- */
.ay-cta{
  position:relative;background:var(--ink);color:var(--paper);overflow:hidden;
  border-radius:var(--radius);
}
.ay-cta::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(0deg,rgba(200,240,79,.10) 0 1px,transparent 1px 24px),
                   repeating-linear-gradient(90deg,rgba(200,240,79,.10) 0 1px,transparent 1px 24px);
  opacity:.5;pointer-events:none;
}
.ay-cta-inner{position:relative;display:grid;grid-template-columns:6fr 6fr;gap:48px;align-items:center;padding:64px}
.ay-cta h2{color:var(--paper);margin-bottom:14px}
.ay-cta p{color:rgba(246,243,236,.78);max-width:32em;margin:0}
.ay-form{display:flex;gap:12px}
.ay-form input[type="email"]{
  flex:1;height:48px;padding:0 16px;border:1px solid rgba(246,243,236,.35);
  background:rgba(246,243,236,.06);color:var(--paper);border-radius:var(--radius);
  font-size:.9375rem;transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.ay-form input[type="email"]::placeholder{color:rgba(246,243,236,.5)}
.ay-form input[type="email"]:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 2px rgba(200,240,79,.30);
}
.ay-form .ay-btn{height:48px;padding:0 24px}
.ay-form-note{font-size:.75rem;color:rgba(246,243,236,.55);margin-top:14px;display:block}

/* ---------- Footer ---------- */
.ay-footer{background:var(--ink);color:var(--paper);padding:72px 0 0;margin-top:104px}
.ay-footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.ay-footer h4{font-family:var(--font-sans);font-size:.8125rem;letter-spacing:.16em;text-transform:uppercase;color:rgba(246,243,236,.55);margin-bottom:18px;font-weight:700}
.ay-footer .brandline{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.ay-footer .brandline .ay-logo-mark{background:var(--lime)}
.ay-footer .brandline .ay-logo-mark::after{background:var(--ink)}
.ay-footer .brandline strong{font-family:var(--font-display);font-size:1.0625rem;color:var(--paper);font-weight:700}
.ay-footer p{color:rgba(246,243,236,.66);font-size:.875rem;line-height:1.8;max-width:26em}
.ay-footer-links{display:grid;gap:10px}
.ay-footer-links a{color:rgba(246,243,236,.78);font-size:.875rem;transition:color .18s var(--ease)}
.ay-footer-links a:hover{color:var(--lime)}
.ay-footer-contact{display:grid;gap:10px;font-size:.875rem;color:rgba(246,243,236,.78)}
.ay-footer-contact span{display:flex;gap:10px;align-items:flex-start}
.ay-footer-contact i{color:var(--lime);margin-top:5px}
.ay-footer-bottom{
  margin-top:56px;border-top:1px solid rgba(246,243,236,.16);padding:22px 0;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.75rem;color:rgba(246,243,236,.5);
}
.ay-footer-bottom a{color:rgba(246,243,236,.5)}
.ay-footer-bottom a:hover{color:var(--lime)}

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

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  .section{padding:72px 0}
  .ay-nav{display:none}
  .ay-header-cta{display:none}
  .ay-burger{display:inline-flex}
  .ay-hero{padding:40px 0 0}
  .ay-hero-grid{grid-template-columns:1fr;gap:44px}
  .ay-hero-media{max-width:560px}
  .ay-scorecard{left:0;bottom:16px}
  .ay-claim{grid-template-columns:1fr;gap:32px}
  .ay-story-row,.ay-story-row.reverse{grid-template-columns:1fr;gap:28px}
  .ay-story-row.reverse .ay-story-text{order:1}
  .ay-story-row.reverse .ay-story-media{order:2}
  .ay-featured{grid-template-columns:1fr}
  .ay-card-stack{grid-template-rows:auto auto}
  .ay-proof{grid-template-columns:1fr;gap:32px}
  .ay-proof-nums{grid-template-columns:repeat(2,1fr);border-top:1px solid var(--line)}
  .ay-proof-num{padding:22px 16px 22px 0;border-bottom:1px solid var(--line)}
  .ay-proof-num:nth-child(2n){border-right:0}
  .ay-faq{grid-template-columns:1fr;gap:32px}
  .ay-cta-inner{grid-template-columns:1fr;gap:32px;padding:44px}
  .ay-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .ay-footer{margin-top:72px}
}
@media (max-width:639px){
  .container{padding:0 20px}
  .section{padding:56px 0}
  .ay-header-inner{height:64px;gap:12px}
  .ay-logo-text .t1{font-size:.9375rem}
  .ay-logo-text .t2{font-size:.5625rem;letter-spacing:.24em}
  .ay-hero-copy h1{font-size:clamp(2rem,8.4vw,2.6rem)}
  .ay-hero-sub{font-size:1rem}
  .ay-hero-actions{flex-direction:column;align-items:stretch}
  .ay-hero-actions .ay-btn{width:100%}
  .ay-stats{grid-template-columns:1fr;gap:16px}
  .ay-stat{display:flex;align-items:baseline;gap:12px;border-bottom:1px solid var(--line);padding-bottom:12px}
  .ay-stat .lbl{margin-top:0}
  .ay-hero-media::before{right:-8px;bottom:-8px}
  .ay-scorecard{position:static;margin-top:-28px;margin-left:12px;margin-right:12px;max-width:none}
  .ay-news-row{grid-template-columns:1fr;gap:12px;padding:22px 12px;margin:0 -12px}
  .ay-news-meta{flex-direction:row;align-items:center;gap:10px}
  .ay-news-arrow{display:none}
  .ay-card--horiz{flex-direction:column}
  .ay-card--horiz .ay-card-img{flex:none}
  .ay-card--horiz .ay-card-img img{aspect-ratio:16/10}
  .ay-cta-inner{padding:32px 24px}
  .ay-form{flex-direction:column}
  .ay-form .ay-btn{width:100%}
  .ay-proof-nums{grid-template-columns:1fr}
  .ay-proof-num{border-right:0}
  .ay-footer-grid{grid-template-columns:1fr}
  .ay-years{flex-wrap:wrap}
  .ay-year{flex:1 1 45%}
  .ay-footer-bottom{flex-direction:column;gap:8px}
}

/* roulang page: article */
:root{
  --ink:#0E211C;
  --ink-2:#16332B;
  --lime:#C8F04F;
  --lime-deep:#A9D63A;
  --paper:#F6F3EC;
  --paper-2:#EDE8DD;
  --line:rgba(14,33,28,.14);
  --line-strong:rgba(14,33,28,.3);
  --muted:#5C6B64;
  --coral:#D9502C;
  --white:#FFFFFF;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",Consolas,monospace;
  --radius:2px;
  --shadow-1:0 1px 0 rgba(14,33,28,.06);
  --shadow-2:0 10px 24px -12px rgba(14,33,28,.25);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
}
*,*::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(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--ink);text-decoration:none;}
button{font-family:inherit;}
h1,h2,h3,h4,p,ul,ol,dl,figure{margin:0;}
ul,ol{padding-left:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}
::selection{background:var(--lime);color:var(--ink);}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ---------- 顶部阅读进度 ---------- */
.ay-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:120;background:transparent;pointer-events:none;}
.ay-progress span{display:block;height:100%;width:0;background:var(--lime);transition:width .12s linear;}

/* ---------- 头部 / 导航 ---------- */
.ay-header{
  position:sticky;top:0;z-index:100;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.ay-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.ay-header-inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:76px;}
.ay-logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex:none;}
.ay-logo-mark{position:relative;width:24px;height:24px;background:var(--ink);border-radius:2px;flex:none;}
.ay-logo-mark::after{content:"";position:absolute;right:4px;bottom:4px;width:7px;height:7px;background:var(--lime);}
.ay-logo-text{display:flex;flex-direction:column;line-height:1.12;font-family:var(--font-display);}
.ay-logo-text strong{font-size:1.0625rem;font-weight:700;letter-spacing:.01em;}
.ay-logo-text small{font-size:.6875rem;letter-spacing:.26em;color:var(--muted);line-height:1.4;}
.ay-nav{display:flex;align-items:center;gap:28px;}
.ay-nav a{position:relative;display:inline-block;padding:6px 0;font-size:.9375rem;font-weight:500;color:var(--ink);text-decoration:none;transition:color .18s var(--ease);}
.ay-nav a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--lime);transform:scaleX(0);transform-origin:left center;transition:transform .32s var(--ease);}
.ay-nav a:hover::after,.ay-nav a:focus-visible::after{transform:scaleX(1);}
.ay-nav a.is-active{font-weight:700;}
.ay-nav a.is-active::after{transform:scaleX(1);}
.ay-header-actions{display:flex;align-items:center;gap:14px;flex:none;}
.ay-burger{
  display:none;position:relative;width:40px;height:40px;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius);
  cursor:pointer;padding:0;transition:border-color .18s var(--ease);
}
.ay-burger:hover{border-color:var(--line-strong);}
.ay-burger span{position:absolute;left:11px;right:11px;height:2px;background:var(--ink);transition:transform .18s var(--ease),opacity .18s var(--ease);}
.ay-burger span:nth-child(1){top:15px;}
.ay-burger span:nth-child(2){bottom:15px;}
.ay-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(4px) rotate(45deg);}
.ay-burger[aria-expanded="true"] span:nth-child(2){transform:translateY(-4px) rotate(-45deg);}

.ay-mobile-panel{display:none;position:fixed;left:0;right:0;top:64px;bottom:0;background:var(--paper);z-index:95;padding:28px 24px 48px;overflow-y:auto;flex-direction:column;}
.ay-mobile-panel.is-open{display:flex;}
.ay-mobile-link{
  font-family:var(--font-display);font-size:1.5rem;font-weight:700;
  color:var(--ink);text-decoration:none;padding:16px 0;border-bottom:1px solid var(--line);
}
.ay-mobile-link:hover{color:var(--ink-2);}
.ay-mobile-panel .ay-btn{margin-top:28px;min-height:48px;}
.ay-mobile-contact{margin-top:28px;display:flex;flex-direction:column;gap:8px;font-size:.875rem;color:var(--muted);}

/* ---------- 按钮 ---------- */
.ay-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;min-height:44px;
  font-size:.9375rem;font-weight:700;line-height:1.2;
  border-radius:var(--radius);border:1px solid transparent;
  cursor:pointer;text-decoration:none;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.ay-btn-primary{background:var(--lime);color:var(--ink);}
.ay-btn-primary:hover{background:var(--lime-deep);transform:translateY(-1px);}
.ay-btn-primary:active{transform:translateY(0);}
.ay-btn-ghost{background:transparent;border-color:var(--ink);color:var(--ink);}
.ay-btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);}
.ay-btn-sm{padding:10px 18px;font-size:.875rem;min-height:40px;}

/* ---------- 标签 / chip ---------- */
.ay-chip{
  display:inline-flex;align-items:center;
  padding:4px 12px;border-radius:999px;
  background:var(--ink);color:var(--paper);
  font-size:.75rem;font-weight:500;letter-spacing:.04em;
}
.ay-tag{
  display:inline-flex;align-items:center;padding:6px 14px;
  border:1px solid var(--line);border-radius:999px;
  font-size:.8125rem;color:var(--muted);background:transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.ay-tag:hover{color:var(--ink);border-color:var(--ink);background:var(--paper-2);}

/* ---------- 文章页头 ---------- */
.ay-article-head{padding:26px 0 48px;border-bottom:1px solid var(--line);}
.ay-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.875rem;color:var(--muted);margin-bottom:26px;}
.ay-crumb a{color:var(--muted);transition:color .18s var(--ease);}
.ay-crumb a:hover{color:var(--ink);text-decoration:underline;text-underline-offset:3px;text-decoration-color:var(--lime);text-decoration-thickness:2px;}
.ay-crumb-sep{color:rgba(14,33,28,.32);}
.ay-crumb-cat{color:var(--ink-2);}
.ay-crumb-cur{max-width:34ch;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--ink-2);}
.ay-article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;font-size:.8125rem;color:var(--muted);}
.ay-article-meta b{font-family:var(--font-mono);font-weight:700;color:var(--ink);}
.ay-article-head h1{
  font-family:var(--font-display);
  font-size:clamp(1.875rem,3.8vw,3rem);
  line-height:1.22;letter-spacing:-.02em;font-weight:700;
  max-width:920px;margin:20px 0 0;color:var(--ink);
}
.ay-article-lead{max-width:38em;margin:20px 0 0;font-size:1.125rem;line-height:1.85;color:var(--muted);}
.ay-author{display:flex;align-items:center;gap:12px;margin-top:30px;}
.ay-author-avatar{
  width:38px;height:38px;border-radius:50%;flex:none;
  background:var(--ink-2);color:var(--lime);
  display:grid;place-items:center;font-size:.8125rem;font-weight:700;
}
.ay-author strong{display:block;font-size:.9375rem;line-height:1.4;}
.ay-author span{display:block;font-size:.8125rem;color:var(--muted);line-height:1.5;}

/* ---------- 正文布局 ---------- */
.ay-article-body{padding:56px 0 72px;}
.ay-article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:48px;align-items:start;}
.ay-article-main{min-width:0;}
@media (min-width:1024px){
  .ay-article-layout{grid-template-columns:minmax(0,760px) 248px;justify-content:space-between;gap:56px;}
}
.ay-prose{font-size:1.125rem;line-height:1.95;color:#1B2E28;max-width:760px;}
.ay-prose > *:first-child{margin-top:0;}
.ay-prose p{margin:0 0 1.1em;}
.ay-prose h2{
  position:relative;font-family:var(--font-display);
  font-size:clamp(1.5rem,2.4vw,1.875rem);line-height:1.32;font-weight:700;
  margin:2em 0 .8em;padding-top:6px;scroll-margin-top:110px;
}
.ay-prose h2::before{content:"";display:block;width:24px;height:3px;background:var(--lime);margin-bottom:14px;}
.ay-prose h3{
  font-family:var(--font-display);font-size:1.375rem;line-height:1.45;font-weight:700;
  margin:1.6em 0 .6em;scroll-margin-top:110px;
}
.ay-prose h4{font-size:1.125rem;font-weight:700;margin:1.4em 0 .5em;}
.ay-prose blockquote{
  margin:1.7em 0;padding:24px;
  background:var(--paper-2);border-left:3px solid var(--lime);
  color:var(--ink-2);font-size:1.0625rem;line-height:1.85;
}
.ay-prose blockquote p:last-child{margin-bottom:0;}
.ay-prose ul,.ay-prose ol{margin:0 0 1.2em;padding-left:1.35em;}
.ay-prose ul{list-style:none;padding-left:0;}
.ay-prose ul li{position:relative;padding-left:1.15em;margin-bottom:.5em;}
.ay-prose ul li::before{content:"";position:absolute;left:0;top:.78em;width:8px;height:8px;background:var(--lime);}
.ay-prose ol{list-style:decimal;}
.ay-prose ol li{margin-bottom:.5em;}
.ay-prose img{border-radius:var(--radius);margin:1.7em 0;width:100%;height:auto;}
.ay-prose figure{margin:1.7em 0;}
.ay-prose figcaption{font-size:.8125rem;color:var(--muted);text-align:center;margin-top:10px;}
.ay-prose table{width:100%;border-collapse:collapse;margin:1.7em 0;font-size:1rem;line-height:1.7;}
.ay-prose th,.ay-prose td{border:1px solid var(--line);padding:12px 14px;text-align:left;vertical-align:top;}
.ay-prose th{background:var(--paper-2);font-weight:700;}
.ay-prose strong{font-weight:700;color:var(--ink);}
.ay-prose a{color:var(--ink);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;transition:background-color .18s var(--ease),text-decoration-color .18s var(--ease);}
.ay-prose a:hover{background:var(--lime);text-decoration-color:var(--ink);}
.ay-prose hr{border:0;border-top:1px solid var(--line);margin:2.2em 0;}
.ay-prose code{font-family:var(--font-mono);font-size:.9em;background:var(--paper-2);padding:2px 6px;border-radius:2px;}

/* ---------- 目录 ---------- */
.ay-toc{display:none;}
@media (min-width:1024px){
  .ay-toc{
    display:block;position:sticky;top:108px;
    border-left:1px solid var(--line);padding-left:18px;
  }
}
.ay-toc-title{font-size:.6875rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin:0 0 12px;font-family:var(--font-sans);font-weight:700;}
.ay-toc a{
  display:block;font-size:.875rem;line-height:1.6;color:var(--muted);
  padding:6px 0 6px 12px;margin-left:-19px;border-left:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.ay-toc a:hover{color:var(--ink);}
.ay-toc a.is-current{color:var(--ink);font-weight:700;border-left-color:var(--lime);}
.ay-toc a.is-sub{padding-left:26px;font-size:.8125rem;}

/* ---------- 文末标签 ---------- */
.ay-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:48px;padding-top:28px;border-top:1px solid var(--line);max-width:760px;}
.ay-tags-label{font-size:.6875rem;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);align-self:center;margin-right:6px;}

/* ---------- 空态 ---------- */
.ay-empty{
  border:1px dashed rgba(14,33,28,.28);border-radius:var(--radius);
  background:var(--paper-2);padding:44px 32px;text-align:center;max-width:760px;
}
.ay-empty i{font-size:1.75rem;color:var(--muted);display:block;margin-bottom:14px;}
.ay-empty-title{font-family:var(--font-display);font-size:1.375rem;font-weight:700;margin:0 0 8px;}
.ay-empty p{color:var(--muted);margin:0 0 20px;font-size:.9375rem;}

/* ---------- 板块标题 ---------- */
.ay-section{padding:72px 0;border-top:1px solid var(--line);}
.ay-section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:36px;}
.ay-section-head h2{
  font-family:var(--font-display);font-size:clamp(1.5rem,2.6vw,2rem);
  line-height:1.28;font-weight:700;margin:0;
}
.ay-section-head h2::before{content:"";display:block;width:24px;height:3px;background:var(--lime);margin-bottom:14px;}
.ay-link{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.9375rem;font-weight:700;color:var(--ink);
  text-decoration:none;border-bottom:1px solid var(--line);
  padding-bottom:2px;transition:border-color .18s var(--ease),gap .18s var(--ease);
}
.ay-link i{font-size:.8125rem;transition:transform .18s var(--ease);}
.ay-link:hover{border-bottom-color:var(--lime);}
.ay-link:hover i{transform:translateX(4px);}

/* ---------- 卡片 ---------- */
.ay-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}
.ay-card{
  display:flex;flex-direction:column;height:100%;
  background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;color:inherit;text-decoration:none;
  transition:box-shadow .32s var(--ease),transform .32s var(--ease),border-color .32s var(--ease);
}
.ay-card:hover,.ay-card:focus-visible{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--line-strong);}
.ay-card-media{aspect-ratio:16/10;overflow:hidden;background:var(--paper-2);}
.ay-card-media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.ay-card:hover .ay-card-media img{transform:scale(1.04);}
.ay-card-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.ay-card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.75rem;color:var(--muted);font-family:var(--font-mono);letter-spacing:.02em;}
.ay-card-title{font-family:var(--font-display);font-size:1.1875rem;line-height:1.45;font-weight:700;margin:0;color:var(--ink);}
.ay-card:hover .ay-card-title{text-decoration:underline;text-decoration-color:var(--lime);text-decoration-thickness:2px;text-underline-offset:5px;}
.ay-card-desc{font-size:.9375rem;line-height:1.75;color:var(--muted);margin:0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- CTA 区 ---------- */
.ay-cta{position:relative;overflow:hidden;background:var(--ink);color:var(--paper);padding:72px 0;border-top:1px solid rgba(246,243,236,.14);}
.ay-cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(246,243,236,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(246,243,236,.07) 1px,transparent 1px);
  background-size:26px 26px;opacity:.55;
}
.ay-cta-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:48px;align-items:center;}
.ay-cta h2{
  font-family:var(--font-display);font-size:clamp(1.5rem,2.8vw,2.125rem);
  line-height:1.3;font-weight:700;margin:0 0 12px;color:var(--paper);
}
.ay-cta p{color:rgba(246,243,236,.78);margin:0;font-size:1rem;line-height:1.8;}
.ay-cta-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.ay-cta .ay-btn-ghost{border-color:rgba(246,243,236,.6);color:var(--paper);}
.ay-cta .ay-btn-ghost:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);}

/* ---------- 返回条 ---------- */
.ay-article-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:8px;padding-top:28px;border-top:1px solid var(--line);max-width:760px;}

/* ---------- 页脚 ---------- */
.ay-footer{background:var(--ink);color:var(--paper);padding:64px 0 0;}
.ay-footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.4fr;gap:40px;padding-bottom:44px;}
.ay-footer h4{
  font-family:var(--font-sans);font-size:.75rem;letter-spacing:.18em;text-transform:uppercase;
  color:rgba(246,243,236,.6);margin:0 0 16px;font-weight:700;
}
.ay-footer p{font-size:.875rem;line-height:1.85;color:rgba(246,243,236,.72);margin:14px 0 0;max-width:26em;}
.brandline{display:flex;align-items:center;gap:10px;}
.brandline .ay-logo-mark{background:var(--paper);}
.brandline .ay-logo-mark::after{background:var(--lime);}
.brandline strong{font-family:var(--font-display);font-size:1.0625rem;font-weight:700;color:var(--paper);}
.ay-footer-links{display:flex;flex-direction:column;gap:10px;}
.ay-footer-links a{font-size:.875rem;color:rgba(246,243,236,.78);transition:color .18s var(--ease);}
.ay-footer-links a:hover{color:var(--lime);}
.ay-footer-contact{display:flex;flex-direction:column;gap:10px;font-size:.875rem;color:rgba(246,243,236,.78);}
.ay-footer-contact i{width:16px;color:var(--lime);margin-right:6px;}
.ay-footer-bottom{
  display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  border-top:1px solid rgba(246,243,236,.16);padding:20px 0 26px;
  font-size:.8125rem;color:rgba(246,243,236,.55);
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .ay-nav{display:none;}
  .ay-burger{display:block;}
  .ay-header-inner{min-height:64px;}
  .ay-header-actions .ay-btn{display:none;}
  .ay-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .ay-grid-3{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  .ay-cta-inner{grid-template-columns:minmax(0,1fr);gap:28px;}
  .ay-cta-actions{justify-content:flex-start;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .ay-article-head{padding:20px 0 36px;}
  .ay-article-body{padding:40px 0 56px;}
  .ay-section{padding:56px 0;}
  .ay-prose{font-size:1.0625rem;line-height:1.9;}
  .ay-tags{margin-top:36px;}
  .ay-footer-grid{grid-template-columns:1fr;gap:28px;}
  .ay-footer-bottom{flex-direction:column;gap:8px;}
}
@media (max-width:639px){
  .ay-grid-3{grid-template-columns:1fr;}
  .ay-article-meta{gap:8px 12px;font-size:.75rem;}
  .ay-cta{padding:56px 0;}
  .ay-cta-actions .ay-btn{width:100%;}
  .ay-article-foot .ay-btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important;}
}

/* roulang page: category1 */
:root{
  --ink:#0E211C;
  --ink-2:#16332B;
  --lime:#C8F04F;
  --lime-deep:#A9D63A;
  --paper:#F6F3EC;
  --paper-2:#EDE8DD;
  --line:rgba(14,33,28,.14);
  --line-strong:rgba(14,33,28,.3);
  --muted:#5C6B64;
  --coral:#D9502C;
  --white:#FFFFFF;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",Consolas,"Courier New",monospace;
  --radius:2px;
  --shadow-1:0 1px 0 rgba(14,33,28,.06);
  --shadow-2:0 10px 24px -12px rgba(14,33,28,.25);
  --ease:cubic-bezier(.22,.61,.36,1);
  --nav-h:76px;
}
*,*::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(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.is-locked{overflow:hidden;}
h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  color:var(--ink);
  margin:0;
  font-weight:700;
  letter-spacing:-.01em;
}
p{margin:0;}
a{color:var(--ink);text-decoration:none;transition:color .18s var(--ease);}
img{display:block;max-width:100%;height:auto;}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;font-size:inherit;}
input,textarea,select{font-family:inherit;font-size:inherit;}
::selection{background:var(--lime);color:var(--ink);}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}
.row{max-width:none;margin-left:0;margin-right:0;}
.row .columns{padding-left:0;padding-right:0;}

/* ---------- Header ---------- */
.ay-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.ay-header.is-scrolled{
  border-bottom-color:var(--line);
  box-shadow:0 1px 0 rgba(14,33,28,.06);
}
.ay-header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  min-height:var(--nav-h);
}
.ay-logo{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.ay-logo-mark{
  position:relative;
  width:26px;
  height:26px;
  background:var(--ink);
  clip-path:polygon(0 0,100% 0,100% 58%,58% 100%,0 100%);
}
.ay-logo-mark::after{
  content:"";
  position:absolute;
  right:-2px;
  bottom:-2px;
  width:9px;
  height:9px;
  background:var(--lime);
}
.ay-logo-text{
  display:flex;
  flex-direction:column;
  line-height:1.12;
}
.ay-logo-text strong{
  font-family:var(--font-display);
  font-size:1.0625rem;
  letter-spacing:.01em;
  color:var(--ink);
}
.ay-logo-text em{
  font-style:normal;
  font-size:.6875rem;
  letter-spacing:.34em;
  color:var(--muted);
  margin-top:2px;
}
.ay-nav{
  display:flex;
  align-items:center;
  gap:28px;
  flex:1 1 auto;
  justify-content:center;
}
.ay-nav a{
  position:relative;
  display:inline-block;
  padding:8px 0;
  font-size:.9375rem;
  font-weight:500;
  color:var(--ink-2);
  white-space:nowrap;
}
.ay-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .32s var(--ease);
}
.ay-nav a:hover{color:var(--ink);}
.ay-nav a:hover::after{transform:scaleX(1);}
.ay-nav a.is-active{color:var(--ink);font-weight:700;}
.ay-nav a.is-active::after{transform:scaleX(1);}
.ay-header-actions{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}

/* ---------- Buttons ---------- */
.ay-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:12px 24px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-size:.9375rem;
  font-weight:700;
  line-height:1.2;
  text-align:center;
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.ay-btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.ay-btn-primary:hover{background:var(--lime-deep);border-color:var(--lime-deep);transform:translateY(-1px);color:var(--ink);}
.ay-btn-outline{background:transparent;color:var(--ink);border-color:var(--ink);}
.ay-btn-outline:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px);}
.ay-btn-sm{min-height:40px;padding:9px 18px;font-size:.875rem;}
.ay-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.9375rem;
  font-weight:700;
  color:var(--ink);
  border-bottom:1px solid var(--ink);
  padding-bottom:2px;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.ay-link i{transition:transform .32s var(--ease);font-size:.8125rem;}
.ay-link:hover{border-bottom-color:var(--lime);color:var(--ink);}
.ay-link:hover i{transform:translateX(4px);}

/* ---------- Mobile nav ---------- */
.ay-burger{
  display:none;
  width:44px;height:44px;
  align-items:center;
  justify-content:center;
  flex-direction:column;
  gap:6px;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  cursor:pointer;
}
.ay-burger span{
  display:block;
  width:18px;height:2px;
  background:var(--ink);
  transition:transform .32s var(--ease),opacity .32s var(--ease);
}
.ay-burger.is-open span:nth-child(1){transform:translateY(4px) rotate(45deg);}
.ay-burger.is-open span:nth-child(2){transform:translateY(-4px) rotate(-45deg);}
.ay-mobile-panel{
  position:fixed;
  inset:0;
  z-index:75;
  background:var(--paper);
  padding:88px 24px 32px;
  display:flex;
  flex-direction:column;
  gap:4px;
  opacity:0;
  transform:translateY(-12px);
  pointer-events:none;
  transition:opacity .32s var(--ease),transform .32s var(--ease);
  overflow-y:auto;
}
.ay-mobile-panel.is-open{opacity:1;transform:none;pointer-events:auto;}
.ay-mobile-panel a.m-link{
  font-family:var(--font-display);
  font-size:1.5rem;
  font-weight:700;
  padding:14px 0;
  border-bottom:1px solid var(--line);
  color:var(--ink);
}
.ay-mobile-panel a.m-link.is-active{color:var(--ink-2);}
.ay-mobile-panel a.m-link.is-active::after{
  content:"";
  display:inline-block;
  width:8px;height:8px;
  background:var(--lime);
  margin-left:10px;
  vertical-align:middle;
}
.ay-mobile-foot{
  margin-top:24px;
  display:flex;
  flex-direction:column;
  gap:12px;
}
.ay-mobile-foot .ay-btn{width:100%;}
.ay-mobile-foot small{font-size:.8125rem;color:var(--muted);line-height:1.7;}

/* ---------- Page head ---------- */
.ay-pagehead{
  position:relative;
  padding:48px 0 0;
  overflow:hidden;
}
.ay-pagehead::before{
  content:"";
  position:absolute;
  inset:0 0 120px 0;
  background-image:linear-gradient(to right,rgba(14,33,28,.05) 1px,transparent 1px),
                   linear-gradient(to bottom,rgba(14,33,28,.05) 1px,transparent 1px);
  background-size:24px 24px;
  opacity:.55;
  pointer-events:none;
}
.ay-pagehead .container{position:relative;}
.ay-pagehead-grid{
  display:grid;
  grid-template-columns:1.12fr .88fr;
  gap:56px;
  align-items:center;
  min-height:340px;
  padding-bottom:48px;
}
.ay-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.875rem;
  color:var(--muted);
  max-width:100%;
}
.ay-breadcrumb a{color:var(--muted);}
.ay-breadcrumb a:hover{color:var(--ink);text-decoration:underline;text-decoration-color:var(--lime);text-underline-offset:4px;}
.ay-breadcrumb .sep{color:rgba(14,33,28,.32);}
.ay-breadcrumb .current{
  color:var(--ink);
  max-width:220px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.ay-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size:.6875rem;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}
.ay-eyebrow::before{
  content:"";
  width:24px;height:1px;
  background:var(--ink);
}
.ay-pagehead h1{
  font-size:clamp(2.25rem,4.6vw,3.5rem);
  line-height:1.1;
  letter-spacing:-.02em;
  margin:16px 0 20px;
}
.ay-pagehead h1 span{display:block;}
.ay-pagehead h1 .accent{
  color:var(--ink-2);
  position:relative;
  display:inline-block;
}
.ay-pagehead h1 .accent::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:6px;
  height:8px;
  background:var(--lime);
  z-index:-1;
}
.ay-pagehead-lede{
  max-width:34em;
  font-size:1.0625rem;
  line-height:1.9;
  color:var(--muted);
  margin:0 0 26px;
}
.ay-pagehead-media{
  position:relative;
  margin:0;
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:4/3;
  border:1px solid var(--line);
  box-shadow:12px 12px 0 var(--lime);
}
.ay-pagehead-media img{
  width:100%;height:100%;
  object-fit:cover;
}
.ay-pagehead-tags{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-top:26px;
}
.ay-tag{
  display:inline-flex;
  align-items:center;
  min-height:30px;
  padding:4px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:.8125rem;
  color:var(--ink-2);
  background:var(--white);
}

/* ---------- Chip bar ---------- */
.ay-chipbar-wrap{
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.ay-chipbar{
  display:flex;
  gap:10px;
  padding:16px 0;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.ay-chipbar::-webkit-scrollbar{display:none;}
.ay-chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:8px 18px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--white);
  font-size:.875rem;
  font-weight:500;
  color:var(--ink-2);
  transition:border-color .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease);
}
.ay-chip:hover{border-color:var(--line-strong);color:var(--ink);}
.ay-chip.is-active{background:var(--ink);border-color:var(--ink);color:var(--paper);font-weight:700;}

/* ---------- Sections ---------- */
.ay-section{padding:104px 0;}
.ay-section + .ay-section{border-top:1px solid var(--line);}
.ay-section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:32px;
  margin-bottom:56px;
}
.ay-section-head .text{max-width:38em;}
.ay-h2{
  font-size:clamp(1.75rem,3vw,2.5rem);
  line-height:1.2;
  margin:12px 0 12px;
}
.ay-section-sub{
  color:var(--muted);
  font-size:1rem;
  line-height:1.85;
}

/* ---------- Timeline ---------- */
.ay-timeline{
  position:relative;
  display:grid;
  grid-template-columns:1fr 1fr;
  column-gap:64px;
}
.ay-timeline::before{
  content:"";
  position:absolute;
  top:10px;
  bottom:10px;
  left:50%;
  width:1px;
  background:var(--line);
  transform:translateX(-.5px);
}
.ay-tl-item{position:relative;padding-bottom:56px;}
.ay-tl-item:nth-child(odd){grid-column:1;}
.ay-tl-item:nth-child(even){grid-column:2;margin-top:80px;}
.ay-tl-item::after{
  content:"";
  position:absolute;
  top:30px;
  width:32px;
  height:1px;
  background:var(--line);
}
.ay-tl-item:nth-child(odd)::after{right:-32px;}
.ay-tl-item:nth-child(even)::after{left:-32px;}
.ay-tl-item::before{
  content:"";
  position:absolute;
  top:26px;
  width:9px;height:9px;
  background:var(--lime);
  border:1px solid var(--ink);
  border-radius:50%;
  z-index:2;
}
.ay-tl-item:nth-child(odd)::before{right:-37px;}
.ay-tl-item:nth-child(even)::before{left:-37px;}
.ay-tl-card{
  position:relative;
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow-1);
  transition:border-color .32s var(--ease),box-shadow .32s var(--ease),transform .32s var(--ease);
}
.ay-tl-card:hover{
  border-color:var(--line-strong);
  box-shadow:var(--shadow-2);
  transform:translateY(-2px);
}
.ay-tl-num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  background:var(--ink);
  color:var(--lime);
  font-family:var(--font-mono);
  font-size:.875rem;
  font-weight:700;
  border-radius:var(--radius);
  margin-bottom:16px;
}
.ay-meta{
  display:block;
  font-size:.8125rem;
  letter-spacing:.04em;
  color:var(--muted);
  font-family:var(--font-mono);
}
.ay-tl-card h3{
  font-size:1.25rem;
  line-height:1.45;
  margin:8px 0 10px;
}
.ay-tl-card p{
  color:var(--muted);
  font-size:.9375rem;
  line-height:1.85;
  margin:0 0 18px;
}

/* ---------- Feature card ---------- */
.ay-featurecard{
  display:grid;
  grid-template-columns:1.3fr .7fr;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:var(--white);
  overflow:hidden;
  box-shadow:var(--shadow-1);
}
.ay-featurecard figure{
  position:relative;
  margin:0;
  overflow:hidden;
  aspect-ratio:16/10;
}
.ay-featurecard figure img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform .5s var(--ease);
}
.ay-featurecard:hover figure img{transform:scale(1.04);}
.ay-featurecard .body{
  padding:40px 36px;
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:14px;
  border-left:1px solid var(--line);
}
.ay-featurecard h3{
  font-size:clamp(1.5rem,2.2vw,2rem);
  line-height:1.3;
}
.ay-featurecard p{
  color:var(--muted);
  font-size:.9375rem;
  line-height:1.9;
}
.ay-badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  align-self:flex-start;
  padding:4px 12px;
  border-radius:999px;
  background:var(--paper-2);
  color:var(--ink-2);
  font-size:.75rem;
  font-weight:700;
  letter-spacing:.06em;
}

/* ---------- Stats ---------- */
.ay-stats{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  margin-top:64px;
}
.ay-stat{
  padding:32px 24px;
  border-left:1px solid var(--line);
}
.ay-stat:first-child{border-left:none;padding-left:0;}
.ay-stat-num{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(2rem,3.2vw,2.75rem);
  line-height:1;
  color:var(--ink);
}
.ay-stat-num small{
  font-size:.42em;
  margin-left:4px;
  color:var(--muted);
  letter-spacing:.04em;
}
.ay-stat-label{
  display:block;
  margin-top:12px;
  font-size:.8125rem;
  line-height:1.65;
  color:var(--muted);
}

/* ---------- Notes ---------- */
.ay-notes{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.ay-notes-media{
  position:relative;
  margin:0;
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:4/3;
  border:1px solid var(--line);
}
.ay-notes-media img{width:100%;height:100%;object-fit:cover;}
.ay-notes-media figcaption{
  position:absolute;
  left:16px;
  bottom:16px;
  padding:8px 14px;
  background:var(--paper);
  border-radius:var(--radius);
  font-size:.8125rem;
  color:var(--ink-2);
  max-width:calc(100% - 32px);
}
.ay-checklist li{
  display:grid;
  grid-template-columns:40px 1fr;
  gap:16px;
  padding:22px 0;
  border-top:1px solid var(--line);
}
.ay-checklist li:first-child{border-top:none;padding-top:0;}
.ay-checklist .num{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:40px;height:40px;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:.8125rem;
  font-weight:700;
  border-radius:var(--radius);
}
.ay-checklist h3{
  font-size:1.0625rem;
  line-height:1.5;
  margin:0 0 6px;
}
.ay-checklist p{
  color:var(--muted);
  font-size:.9375rem;
  line-height:1.85;
  margin:0;
}

/* ---------- FAQ ---------- */
.ay-faq-wrap{
  display:grid;
  grid-template-columns:.82fr 1.18fr;
  gap:56px;
  align-items:start;
}
.ay-faq-aside p{
  color:var(--muted);
  font-size:.9375rem;
  line-height:1.9;
  margin:16px 0 24px;
  max-width:30em;
}
.ay-contactcard{
  background:var(--ink);
  color:var(--paper);
  border-radius:var(--radius);
  padding:24px;
}
.ay-contactcard h4{
  color:var(--paper);
  font-size:1.0625rem;
  margin:0 0 8px;
}
.ay-contactcard p{
  color:rgba(246,243,236,.72);
  font-size:.875rem;
  line-height:1.8;
  margin:0 0 18px;
}
.ay-contactcard .ay-btn-primary{width:100%;}
.ay-faq{
  list-style:none;
  margin:0;
  padding:0;
  background:transparent;
  border:none;
}
.ay-faq .accordion-item{
  background:transparent;
  border:none;
  border-top:1px solid var(--line);
}
.ay-faq .accordion-item:last-child{border-bottom:1px solid var(--line);}
.ay-faq .accordion-title{
  position:relative;
  display:block;
  padding:24px 48px 24px 0;
  border:none;
  background:transparent;
  color:var(--ink);
  font-size:1.125rem;
  font-weight:700;
  line-height:1.6;
}
.ay-faq .accordion-title h3{
  font-family:var(--font-sans);
  font-size:1.0625rem;
  font-weight:700;
  line-height:1.6;
  margin:0;
  color:var(--ink);
}
.ay-faq .accordion-title:hover{background:transparent;color:var(--ink-2);}
.ay-faq .accordion-title::before{
  content:"+";
  position:absolute;
  right:0;
  top:50%;
  transform:translateY(-50%);
  width:32px;height:32px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-family:var(--font-mono);
  font-size:1.125rem;
  color:var(--ink);
  background:var(--paper-2);
  border-radius:var(--radius);
  transition:background-color .18s var(--ease);
}
.ay-faq .accordion-title:hover::before{background:var(--lime);}
.ay-faq .is-active > .accordion-title::before{content:"–";background:var(--lime);}
.ay-faq .accordion-content{
  padding:0 48px 24px 0;
  border:none;
  background:transparent;
  color:var(--muted);
  font-size:.9375rem;
  line-height:1.9;
}
.ay-faq .accordion-content p{margin:0;}

/* ---------- CTA ---------- */
.ay-cta{
  position:relative;
  background:var(--ink);
  color:var(--paper);
  padding:88px 0;
  overflow:hidden;
}
.ay-cta::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(115deg,transparent 0 46%,rgba(200,240,79,.16) 46% 46.15%,transparent 46.15% 100%),
    linear-gradient(to right,rgba(246,243,236,.06) 1px,transparent 1px);
  background-size:auto,24px 24px;
  pointer-events:none;
}
.ay-cta .container{position:relative;}
.ay-cta-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:56px;
  align-items:center;
}
.ay-cta h2{
  color:var(--paper);
  font-size:clamp(1.75rem,3vw,2.5rem);
  line-height:1.22;
  margin-bottom:14px;
}
.ay-cta p.lede{
  color:rgba(246,243,236,.74);
  font-size:1rem;
  line-height:1.85;
  max-width:30em;
}
.ay-subform{
  display:flex;
  gap:12px;
  align-items:stretch;
}
.ay-subform label{
  display:none;
}
.ay-subform input{
  flex:1 1 auto;
  min-width:0;
  height:48px;
  padding:0 16px;
  border:1px solid rgba(246,243,236,.3);
  border-radius:var(--radius);
  background:rgba(246,243,236,.06);
  color:var(--paper);
  font-size:.9375rem;
  transition:border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.ay-subform input::placeholder{color:rgba(246,243,236,.5);}
.ay-subform input:focus{
  outline:none;
  border-color:var(--lime);
  box-shadow:0 0 0 2px rgba(200,240,79,.3);
}
.ay-subform .ay-btn{flex:0 0 auto;height:48px;}
.ay-cta small{
  display:block;
  margin-top:14px;
  font-size:.75rem;
  color:rgba(246,243,236,.56);
  line-height:1.7;
}

/* ---------- Footer ---------- */
.ay-footer{
  background:var(--ink);
  color:var(--paper);
  padding:72px 0 0;
  border-top:1px solid rgba(246,243,236,.1);
}
.ay-footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;
  padding-bottom:56px;
}
.ay-footer .brandline{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.ay-footer .brandline strong{
  font-family:var(--font-display);
  font-size:1.0625rem;
  color:var(--paper);
}
.ay-footer p{
  color:rgba(246,243,236,.62);
  font-size:.875rem;
  line-height:1.9;
  max-width:26em;
}
.ay-footer h4{
  color:var(--paper);
  font-size:.9375rem;
  margin:0 0 16px;
  font-family:var(--font-sans);
  font-weight:700;
  letter-spacing:.02em;
}
.ay-footer-links{
  display:flex;
  flex-direction:column;
  gap:10px;
}
.ay-footer-links a{
  color:rgba(246,243,236,.66);
  font-size:.875rem;
  transition:color .18s var(--ease);
}
.ay-footer-links a:hover{color:var(--lime);}
.ay-footer-contact{
  display:flex;
  flex-direction:column;
  gap:12px;
  font-size:.875rem;
  color:rgba(246,243,236,.66);
  line-height:1.7;
}
.ay-footer-contact i{
  color:var(--lime);
  margin-right:8px;
  width:16px;
}
.ay-footer-bottom{
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  padding:20px 0 28px;
  border-top:1px solid rgba(246,243,236,.14);
  font-size:.8125rem;
  color:rgba(246,243,236,.5);
}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-in{opacity:1;transform:none;}

/* ---------- Responsive ---------- */
@media (max-width:1023px){
  :root{--nav-h:70px;}
  .ay-nav{gap:18px;}
  .ay-nav a{font-size:.875rem;}
  .ay-section{padding:72px 0;}
  .ay-pagehead-grid{grid-template-columns:1fr;gap:36px;min-height:0;padding-bottom:40px;}
  .ay-pagehead-media{aspect-ratio:16/9;box-shadow:8px 8px 0 var(--lime);}
  .ay-timeline{column-gap:40px;}
  .ay-timeline::before{display:none;}
  .ay-tl-item::after,.ay-tl-item::before{display:none;}
  .ay-tl-item:nth-child(even){margin-top:48px;}
  .ay-featurecard{grid-template-columns:1fr;}
  .ay-featurecard .body{border-left:none;border-top:1px solid var(--line);padding:32px 28px;}
  .ay-stats{grid-template-columns:repeat(2,1fr);}
  .ay-stat:nth-child(3){border-left:none;padding-left:0;border-top:1px solid var(--line);}
  .ay-stat:nth-child(4){border-top:1px solid var(--line);}
  .ay-notes{grid-template-columns:1fr;gap:36px;}
  .ay-faq-wrap{grid-template-columns:1fr;gap:36px;}
  .ay-cta-grid{grid-template-columns:1fr;gap:32px;}
  .ay-footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:900px){
  .ay-nav{display:none;}
  .ay-burger{display:flex;}
  .ay-header-actions .ay-btn-sm{display:none;}
}
@media (max-width:767px){
  :root{--nav-h:64px;}
  body{font-size:1rem;line-height:1.8;}
  .container{padding-left:18px;padding-right:18px;}
  .ay-logo-text strong{font-size:.9375rem;}
  .ay-logo-text em{font-size:.625rem;letter-spacing:.28em;}
  .ay-pagehead{padding-top:32px;}
  .ay-pagehead h1{font-size:clamp(1.85rem,7vw,2.5rem);margin:12px 0 16px;}
  .ay-pagehead-lede{font-size:.9375rem;margin-bottom:20px;}
  .ay-pagehead-media{box-shadow:6px 6px 0 var(--lime);}
  .ay-section{padding:56px 0;}
  .ay-section-head{flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:32px;}
  .ay-timeline{grid-template-columns:1fr;}
  .ay-tl-item,
  .ay-tl-item:nth-child(odd),
  .ay-tl-item:nth-child(even){grid-column:1;margin-top:0;padding-bottom:20px;}
  .ay-tl-card{padding:22px;}
  .ay-stats{grid-template-columns:1fr;margin-top:40px;}
  .ay-stat{padding:24px 0;border-left:none;border-top:1px solid var(--line);}
  .ay-stat:first-child{border-top:none;padding-top:0;}
  .ay-stat:nth-child(3){padding-left:0;}
  .ay-checklist li{grid-template-columns:36px 1fr;gap:12px;}
  .ay-checklist .num{width:36px;height:36px;}
  .ay-subform{flex-direction:column;}
  .ay-subform .ay-btn{width:100%;}
  .ay-faq .accordion-title{padding:20px 44px 20px 0;}
  .ay-faq .accordion-title h3{font-size:1rem;}
  .ay-faq .accordion-content{padding-right:0;}
  .ay-cta{padding:56px 0;}
  .ay-footer{padding-top:56px;}
  .ay-footer-grid{grid-template-columns:1fr;gap:28px;padding-bottom:40px;}
  .ay-footer-bottom{flex-direction:column;gap:8px;font-size:.75rem;}
  .ay-breadcrumb .current{max-width:150px;}
}
@media (max-width:520px){
  .ay-featurecard .body{padding:24px 20px;}
  .ay-tag{font-size:.75rem;padding:3px 10px;}
  .ay-pagehead-tags{gap:6px;margin-top:20px;}
  .ay-contactcard{padding:20px;}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category2 */
:root{
  --ink:#0E211C;
  --ink-2:#16332B;
  --lime:#C8F04F;
  --lime-deep:#A9D63A;
  --paper:#F6F3EC;
  --paper-2:#EDE8DD;
  --line:rgba(14,33,28,.14);
  --muted:#5C6B64;
  --coral:#D9502C;
  --white:#FFFFFF;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",Consolas,monospace;
  --radius:2px;
  --shadow-1:0 1px 0 rgba(14,33,28,.06);
  --shadow-2:0 10px 24px -12px rgba(14,33,28,.25);
  --ease:cubic-bezier(.22,.61,.36,1);
  --sec:104px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{display:block;max-width:100%;height:auto}
a{color:var(--ink);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--ink-2)}
button{font:inherit;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1.1em}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  color:var(--ink);
  margin:0;
  letter-spacing:-.01em;
}
h1{font-size:clamp(2.1rem,4.2vw,3.35rem);line-height:1.12;letter-spacing:-.02em}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.25}
h3{font-size:1.25rem;line-height:1.45}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

.row{max-width:none;margin-left:-14px;margin-right:-14px}
.column,.columns{padding-left:14px;padding-right:14px;float:left}

/* ---------- header ---------- */
.ay-header{
  position:sticky;top:0;z-index:80;
  background:var(--paper);
  border-bottom:1px solid var(--line);
  transition:box-shadow .32s var(--ease),background .32s var(--ease);
}
.ay-header.is-scrolled{box-shadow:0 8px 20px -16px rgba(14,33,28,.6);background:var(--paper)}
.ay-header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;min-height:76px;
}
.ay-brand{display:flex;align-items:center;gap:12px;flex:none}
.ay-logo-mark{
  width:24px;height:24px;flex:none;position:relative;
  background:var(--ink);
  border-radius:2px 2px 8px 2px;
}
.ay-logo-mark::after{
  content:"";position:absolute;right:-3px;bottom:-3px;
  width:9px;height:9px;background:var(--lime);border-radius:1px;
}
.ay-brand-text{display:flex;flex-direction:column;line-height:1.15}
.ay-brand-text strong{font-family:var(--font-display);font-size:1.0625rem;letter-spacing:.01em}
.ay-brand-text small{font-size:.6875rem;letter-spacing:.22em;color:var(--muted);text-transform:uppercase}

.ay-nav{display:flex;align-items:center;gap:28px}
.ay-nav a{
  position:relative;
  font-size:.9375rem;font-weight:500;color:var(--ink);
  padding:6px 0;white-space:nowrap;
}
.ay-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform .32s var(--ease);
}
.ay-nav a:hover::after,.ay-nav a:focus-visible::after{transform:scaleX(1)}
.ay-nav a.is-active{font-weight:700;color:var(--ink)}
.ay-nav a.is-active::after{transform:scaleX(1)}

.ay-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--radius);
  font-size:.9375rem;font-weight:700;line-height:1.2;
  border:1px solid transparent;
  transition:transform .18s var(--ease),background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.ay-btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.ay-btn-primary:hover{background:var(--lime-deep);border-color:var(--lime-deep);color:var(--ink);transform:translateY(-1px)}
.ay-btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.ay-btn-ghost:hover{background:var(--ink);color:var(--paper);transform:translateY(-1px)}
.ay-btn-light{background:var(--lime);color:var(--ink)}
.ay-btn-light:hover{background:var(--lime-deep);color:var(--ink);transform:translateY(-1px)}
.ay-header-cta{flex:none;padding:11px 18px;font-size:.875rem}

.ay-burger{
  display:none;width:44px;height:44px;flex:none;
  background:transparent;border:1px solid var(--line);border-radius:var(--radius);
  position:relative;
}
.ay-burger span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--ink);
  transition:transform .32s var(--ease),opacity .18s var(--ease);
}
.ay-burger span:nth-child(1){top:16px}
.ay-burger span:nth-child(2){top:26px}
body.menu-open .ay-burger span:nth-child(1){transform:translateY(5px) rotate(45deg)}
body.menu-open .ay-burger span:nth-child(2){transform:translateY(-5px) rotate(-45deg)}

.ay-mobile{
  display:none;position:fixed;inset:0;z-index:70;
  background:var(--paper);
  padding:96px 24px 32px;
  flex-direction:column;justify-content:space-between;
}
body.menu-open .ay-mobile{display:flex}
.ay-mobile nav{display:flex;flex-direction:column;gap:4px}
.ay-mobile nav a{
  font-family:var(--font-display);font-size:1.5rem;font-weight:700;
  padding:16px 0;border-bottom:1px solid var(--line);
}
.ay-mobile nav a.is-active{color:var(--ink-2)}
.ay-mobile nav a.is-active::before{
  content:"";display:inline-block;width:8px;height:8px;background:var(--lime);
  margin-right:12px;vertical-align:middle;border-radius:1px;
}
.ay-mobile-foot{display:flex;flex-direction:column;gap:12px;padding-top:28px}
.ay-mobile-foot span{font-size:.8125rem;color:var(--muted)}

/* ---------- page head ---------- */
.ay-pagehead{
  position:relative;overflow:hidden;
  color:var(--paper);
  padding:78px 0 66px;
  background-image:
    linear-gradient(100deg,rgba(14,33,28,.94) 0%,rgba(14,33,28,.78) 46%,rgba(14,33,28,.42) 100%),
    url("/assets/images/backpic/back-2.webp");
  background-size:cover;
  background-position:center;
}
.ay-pagehead::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(246,243,236,.06) 0 1px,transparent 1px 24px),
                   repeating-linear-gradient(0deg,rgba(246,243,236,.05) 0 1px,transparent 1px 24px);
  opacity:.6;
}
.ay-pagehead .container{position:relative;z-index:2}
.ay-crumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  font-size:.875rem;color:rgba(246,243,236,.72);margin-bottom:26px;
}
.ay-crumb a{color:rgba(246,243,236,.72);border-bottom:1px solid transparent}
.ay-crumb a:hover{color:var(--lime);border-bottom-color:var(--lime)}
.ay-crumb .sep{opacity:.5}
.ay-crumb .current{color:var(--paper);max-width:60vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ay-pagehead h1{color:var(--paper);max-width:16em}
.ay-pagehead h1 em{font-style:normal;color:var(--lime)}
.ay-pagehead p{
  color:rgba(246,243,236,.82);
  max-width:34em;margin:20px 0 26px;
  font-size:1.0625rem;line-height:1.8;
}
.ay-link-arrow{
  display:inline-flex;align-items:center;gap:8px;
  font-weight:700;font-size:.9375rem;color:var(--paper);
  border-bottom:1px solid var(--lime);padding-bottom:3px;
  transition:color .18s var(--ease);
}
.ay-link-arrow i{transition:transform .18s var(--ease)}
.ay-link-arrow:hover{color:var(--lime)}
.ay-link-arrow:hover i{transform:translateX(4px)}

/* ---------- chips ---------- */
.ay-chips-bar{
  background:var(--paper-2);
  border-bottom:1px solid var(--line);
  padding:16px 0;
}
.ay-chips{
  display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.ay-chips::-webkit-scrollbar{display:none}
.ay-chips a{
  flex:none;
  padding:9px 18px;border-radius:999px;
  border:1px solid var(--line);
  background:var(--paper);
  font-size:.875rem;font-weight:500;color:var(--ink);
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.ay-chips a:hover{border-color:rgba(14,33,28,.34);background:var(--white)}
.ay-chips a.is-current{background:var(--ink);border-color:var(--ink);color:var(--paper);font-weight:700}

/* ---------- sections ---------- */
.ay-section{padding:var(--sec) 0}
.ay-section-tight{padding:72px 0}
.ay-eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:.6875rem;letter-spacing:.18em;text-transform:uppercase;
  color:var(--muted);margin-bottom:14px;
}
.ay-lead{color:var(--muted);max-width:38em}

/* ---------- main layout ---------- */
.ay-science-grid{display:block}
.ay-toc{
  position:sticky;top:104px;
  border:1px solid var(--line);
  background:var(--paper);
  border-radius:var(--radius);
  box-shadow:var(--shadow-1);
  padding:24px 22px;
}
.ay-toc h2{
  font-size:1rem;letter-spacing:.02em;
  padding-bottom:14px;margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.ay-toc ol{display:flex;flex-direction:column;gap:2px}
.ay-toc a{
  display:flex;gap:10px;align-items:baseline;
  padding:10px 0 10px 12px;
  font-size:.9375rem;color:var(--muted);
  border-left:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.ay-toc a span{font-family:var(--font-mono);font-size:.6875rem;color:rgba(14,33,28,.4)}
.ay-toc a:hover{color:var(--ink);border-left-color:var(--lime);background:var(--paper-2)}
.ay-toc-note{
  margin-top:18px;padding-top:16px;border-top:1px solid var(--line);
  font-size:.8125rem;color:var(--muted);line-height:1.7;
}

.ay-article-block{margin-bottom:64px}
.ay-article-block:last-child{margin-bottom:0}
.ay-block-head{display:flex;align-items:flex-start;gap:18px;margin-bottom:22px}
.ay-num{
  flex:none;width:44px;height:44px;border-radius:2px;
  background:var(--ink);color:var(--lime);
  font-family:var(--font-mono);font-size:.875rem;font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.ay-block-head h2{font-size:clamp(1.35rem,2.2vw,1.75rem);line-height:1.3;padding-top:2px}
.ay-block-head .ay-sub{display:block;font-family:var(--font-sans);font-size:.8125rem;color:var(--muted);font-weight:400;margin-top:6px;letter-spacing:0}
.ay-figure{
  margin:0 0 26px;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;background:var(--paper-2);box-shadow:var(--shadow-1);
}
.ay-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s var(--ease)}
.ay-figure:hover img{transform:scale(1.04)}
.ay-figure figcaption{
  font-size:.8125rem;color:var(--muted);
  padding:12px 18px;border-top:1px solid var(--line);background:var(--paper);
}
.ay-article-block p{color:#22352f;max-width:38em}
.ay-article-block p strong{color:var(--ink)}
.ay-inline-link{
  color:var(--ink);font-weight:700;
  border-bottom:1px solid var(--lime);
  transition:background .18s var(--ease);
}
.ay-inline-link:hover{background:rgba(200,240,79,.45)}

.ay-quote{
  margin:28px 0;padding:22px 24px;
  background:var(--paper-2);
  border-left:3px solid var(--lime);
  border-radius:0 var(--radius) var(--radius) 0;
  font-family:var(--font-display);
  font-size:1.125rem;line-height:1.8;color:var(--ink);
}
.ay-quote cite{display:block;margin-top:10px;font-family:var(--font-sans);font-style:normal;font-size:.8125rem;color:var(--muted)}

/* ---------- stats ---------- */
.ay-stats{
  margin:8px 0 64px;
  display:grid;grid-template-columns:repeat(3,1fr);
  border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.ay-stats > div{
  padding:28px 22px;
  border-right:1px solid var(--line);
}
.ay-stats > div:last-child{border-right:none}
.ay-stats .num{
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(1.5rem,3vw,2.15rem);line-height:1.1;color:var(--ink);
  display:flex;align-items:baseline;gap:6px;
}
.ay-stats .num small{font-size:.8125rem;font-weight:400;color:var(--muted);font-family:var(--font-sans)}
.ay-stats .desc{margin-top:10px;font-size:.875rem;color:var(--muted);line-height:1.7}

/* ---------- checklist ---------- */
.ay-checklist{margin:26px 0 0;display:grid;gap:12px}
.ay-checklist li{
  display:flex;gap:12px;align-items:flex-start;
  font-size:.9375rem;color:#22352f;line-height:1.75;
}
.ay-checklist li::before{
  content:"";flex:none;width:8px;height:8px;margin-top:9px;
  background:var(--lime);border-radius:1px;
}

/* ---------- faq ---------- */
.ay-faq-wrap{max-width:860px}
.ay-faqs.accordion{border:none;background:transparent;margin:0}
.ay-faqs .accordion-item{
  border:none;border-bottom:1px solid var(--line);background:transparent;
}
.ay-faqs .accordion-item:first-child{border-top:1px solid var(--line)}
.ay-faqs .ay-faq-q{margin:0;font-size:1.0625rem;font-family:var(--font-sans);font-weight:700}
.ay-faqs .accordion-title{
  border:none;
  padding:22px 46px 22px 24px;
  font-family:var(--font-display);font-size:1.0625rem;font-weight:700;color:var(--ink);
  position:relative;background:transparent;line-height:1.6;
  transition:background .18s var(--ease);
}
.ay-faqs .accordion-title:hover{background:var(--paper-2)}
.ay-faqs .accordion-title::before{
  content:"+";
  position:absolute;right:20px;top:50%;transform:translateY(-50%);
  font-family:var(--font-mono);font-size:1.125rem;color:var(--ink);
  margin:0;width:auto;height:auto;line-height:1;
  transition:transform .32s var(--ease),color .18s var(--ease);
}
.ay-faqs .accordion-item.is-active > .accordion-title::before{
  content:"–";transform:translateY(-50%) rotate(180deg);color:var(--ink-2);
}
.ay-faqs .accordion-content{
  border:none;background:transparent;
  padding:0 46px 24px 24px;
  color:var(--muted);font-size:.9375rem;line-height:1.85;
}
.ay-faqs .accordion-item.is-active > .accordion-content{
  border-left:2px solid var(--lime);margin-left:24px;padding-left:18px;
}
.ay-faqs .accordion-content p{margin:0 0 .8em}
.ay-faqs .accordion-content p:last-child{margin-bottom:0}

/* ---------- cta ---------- */
.ay-cta{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--paper);
  padding:80px 0;
  border-radius:0;
}
.ay-cta::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(200,240,79,.14) 0 1px,transparent 1px 24px);
  opacity:.35;
}
.ay-cta::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  border:1px solid rgba(200,240,79,.28);transform:rotate(18deg);pointer-events:none;
}
.ay-cta .container{position:relative;z-index:2}
.ay-cta h2{color:var(--paper);max-width:16em}
.ay-cta p{color:rgba(246,243,236,.78);max-width:34em;margin:16px 0 0}
.ay-cta-form{display:flex;gap:10px;margin-top:26px;max-width:460px}
.ay-cta-form input{
  flex:1;min-width:0;height:48px;
  padding:0 16px;border-radius:var(--radius);
  border:1px solid rgba(246,243,236,.34);
  background:rgba(246,243,236,.06);
  color:var(--paper);font-size:.9375rem;
}
.ay-cta-form input::placeholder{color:rgba(246,243,236,.1);color:rgba(246,243,236,.55)}
.ay-cta-form input:focus{
  outline:none;border-color:var(--lime);
  box-shadow:0 0 0 3px rgba(200,240,79,.28);
}
.ay-cta-form button{height:48px;white-space:nowrap}
.ay-cta-note{font-size:.8125rem;color:rgba(246,243,236,.55);margin-top:14px}

/* ---------- footer ---------- */
.ay-footer{background:var(--ink);color:var(--paper);padding:64px 0 0}
.ay-footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:40px;padding-bottom:48px;
}
.ay-footer h4{
  font-family:var(--font-sans);font-size:.8125rem;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;
  color:rgba(246,243,236,.6);margin-bottom:16px;
}
.ay-footer .brandline{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.ay-footer .brandline strong{font-family:var(--font-display);font-size:1rem;color:var(--paper)}
.ay-footer p{color:rgba(246,243,236,.68);font-size:.875rem;line-height:1.85;max-width:26em;margin:0}
.ay-footer-links{display:flex;flex-direction:column;gap:10px}
.ay-footer-links a{font-size:.875rem;color:rgba(246,243,236,.74);transition:color .18s var(--ease)}
.ay-footer-links a:hover{color:var(--lime)}
.ay-footer-contact{display:flex;flex-direction:column;gap:12px}
.ay-footer-contact span{
  display:flex;gap:10px;align-items:flex-start;
  font-size:.8125rem;color:rgba(246,243,236,.68);line-height:1.7;
}
.ay-footer-contact i{color:var(--lime);margin-top:4px;font-size:.8125rem}
.ay-footer-bottom{
  border-top:1px solid rgba(246,243,236,.16);
  padding:22px 0 28px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:.8125rem;color:rgba(246,243,236,.55);
}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  :root{--sec:76px}
  .ay-nav{gap:18px}
  .ay-nav a{font-size:.875rem}
  .ay-header-cta{display:none}
  .ay-science-grid .column,.ay-science-grid .columns{float:none;width:100%}
  .ay-toc{position:static;margin-bottom:36px}
  .ay-stats{grid-template-columns:1fr;border-bottom:none}
  .ay-stats > div{border-right:none;border-bottom:1px solid var(--line);padding:22px 0}
  .ay-stats > div:last-child{border-bottom:none}
  .ay-footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media screen and (max-width:767px){
  :root{--sec:64px}
  .ay-nav{display:none}
  .ay-burger{display:block}
  .ay-header-inner{min-height:64px}
  .ay-pagehead{padding:56px 0 48px}
  .ay-pagehead p{font-size:1rem}
  .ay-article-block{margin-bottom:48px}
  .ay-figure img{aspect-ratio:4/3}
  .ay-cta{padding:56px 0}
  .ay-cta-form{flex-direction:column;max-width:none}
  .ay-cta-form button{width:100%}
  .ay-block-head{gap:14px}
  .ay-num{width:38px;height:38px;font-size:.75rem}
  .ay-crumb .current{max-width:70vw}
}
@media screen and (max-width:519px){
  :root{--sec:56px}
  .container{padding:0 18px}
  .ay-brand-text strong{font-size:.9375rem}
  .ay-footer-grid{grid-template-columns:1fr;gap:28px}
  .ay-faqs .accordion-title{padding:18px 42px 18px 16px;font-size:1rem}
  .ay-faqs .accordion-content{padding:0 18px 20px 16px}
  .ay-faqs .accordion-item.is-active > .accordion-content{margin-left:16px;padding-left:14px}
  .ay-footer-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;transition-duration:.001ms !important}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category3 */
:root{
  --ink:#0E211C;
  --ink-2:#16332B;
  --lime:#C8F04F;
  --lime-deep:#A9D63A;
  --paper:#F6F3EC;
  --paper-2:#EDE8DD;
  --line:rgba(14,33,28,.14);
  --line-strong:rgba(14,33,28,.30);
  --muted:#5C6B64;
  --coral:#D9502C;
  --white:#FFFFFF;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",Consolas,monospace;
  --r:2px;
  --shadow-1:0 1px 0 rgba(14,33,28,.06);
  --shadow-2:0 10px 24px -12px rgba(14,33,28,.25);
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1200px;
  --gutter:14px;
  --sec-pad:104px;
}
*,*::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(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--ink);text-decoration:none;transition:color 180ms var(--ease)}
a:hover{color:var(--ink)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:700;letter-spacing:-.01em}
p{margin:0 0 1.1em;max-width:38em}
p:last-child{margin-bottom:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
::selection{background:var(--lime);color:var(--ink)}

/* ---------- container ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.ay-header{
  position:sticky;top:0;z-index:90;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.ay-header.is-stuck{border-bottom-color:var(--line);box-shadow:var(--shadow-1)}
.ay-header-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;height:76px}
.ay-brand{display:inline-flex;align-items:center;gap:12px;min-height:44px}
.ay-logo-mark{
  position:relative;width:24px;height:24px;flex:0 0 24px;
  border:2px solid var(--ink);border-radius:3px;display:inline-block;
}
.ay-logo-mark::after{
  content:"";position:absolute;right:-4px;bottom:-4px;
  width:9px;height:9px;background:var(--lime);border:2px solid var(--paper);border-radius:1px;
}
.ay-brand-text{display:flex;flex-direction:column;line-height:1.16}
.ay-brand-text strong{font-family:var(--font-display);font-size:1.0625rem;font-weight:700;letter-spacing:.01em}
.ay-brand-text em{font-style:normal;font-size:.6875rem;letter-spacing:.18em;color:var(--muted);text-transform:uppercase}
.ay-nav{display:flex;align-items:center;gap:28px}
.ay-nav a{
  position:relative;display:inline-flex;align-items:center;
  font-size:.9375rem;font-weight:500;padding:6px 0;color:var(--ink);
}
.ay-nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left center;
  transition:transform 320ms var(--ease);
}
.ay-nav a:hover::after,.ay-nav a:focus-visible::after{transform:scaleX(1)}
.ay-nav a.is-active{font-weight:700}
.ay-nav a.is-active::after{transform:scaleX(1)}
.ay-header-actions{display:flex;align-items:center;gap:12px}
.ay-nav-extra{display:none}

/* ---------- buttons ---------- */
.ay-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:14px 24px;border-radius:var(--r);
  background:var(--lime);color:var(--ink);border:1px solid var(--ink);
  font-family:var(--font-sans);font-size:.9375rem;font-weight:700;letter-spacing:.01em;
  cursor:pointer;text-align:center;
  transition:background 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),box-shadow 180ms var(--ease);
}
.ay-btn:hover,.ay-btn:focus-visible{background:var(--lime-deep);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-2)}
.ay-btn:active{transform:translateY(0)}
.ay-btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.ay-btn-ghost:hover,.ay-btn-ghost:focus-visible{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.ay-btn-sm{min-height:40px;padding:10px 16px;font-size:.875rem}
.ay-btn-block{width:100%}
.ay-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.9375rem;font-weight:700;color:var(--ink);
  border-bottom:1px solid var(--ink);padding-bottom:2px;
  transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.ay-link i,.ay-link .arw{transition:transform 180ms var(--ease)}
.ay-link:hover,.ay-link:focus-visible{border-bottom-color:var(--lime);color:var(--ink)}
.ay-link:hover .arw,.ay-link:focus-visible .arw{transform:translateX(4px)}

/* ---------- burger ---------- */
.ay-burger{
  display:none;width:44px;height:44px;min-width:44px;
  align-items:center;justify-content:center;
  background:transparent;border:1px solid var(--line);border-radius:var(--r);cursor:pointer;
}
.ay-burger span{display:block;width:18px;height:2px;background:var(--ink);position:relative;transition:transform 180ms var(--ease),opacity 180ms var(--ease)}
.ay-burger span+span{margin-top:6px}
.ay-burger[aria-expanded="true"] span:first-child{transform:translateY(4px) rotate(45deg)}
.ay-burger[aria-expanded="true"] span:last-child{transform:translateY(-4px) rotate(-45deg)}

/* ---------- page head ---------- */
.ay-pagehead{border-bottom:1px solid var(--line);background:var(--paper)}
.ay-pagehead-grid{
  display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:stretch;
  padding-top:44px;padding-bottom:0;
}
.ay-pagehead-main{padding-bottom:52px;align-self:center}
.ay-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:.875rem;color:var(--muted);margin-bottom:22px}
.ay-crumb a{color:var(--muted);border-bottom:1px solid transparent;padding-bottom:1px}
.ay-crumb a:hover{color:var(--ink);border-bottom-color:var(--ink)}
.ay-crumb .sep{color:var(--line-strong)}
.ay-crumb .cur{color:var(--ink);font-weight:500;max-width:22em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ay-eyebrow{
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);margin:0 0 16px;
}
.ay-pagehead h1{
  font-size:clamp(2rem,3.6vw,3rem);line-height:1.14;letter-spacing:-.02em;margin-bottom:20px;
}
.ay-pagehead h1 .h1-key{display:block;font-size:.52em;line-height:1.4;color:var(--muted);margin-top:10px;letter-spacing:0}
.ay-pagehead .lead{font-size:1.0625rem;line-height:1.85;color:var(--muted);max-width:34em;margin-bottom:26px}
.ay-pagehead-visual{position:relative;min-height:320px;display:flex;align-items:flex-end;padding-bottom:0}
.ay-pagehead-visual img{
  width:100%;height:100%;min-height:320px;max-height:380px;object-fit:cover;
  border-radius:var(--r);filter:saturate(1.02);
}
.ay-pagehead-visual::before{
  content:"";position:absolute;left:-12px;bottom:-12px;width:96px;height:96px;
  background:var(--lime);border-radius:2px;z-index:0;
}
.ay-pagehead-visual img{position:relative;z-index:1}

/* ---------- chip bar ---------- */
.ay-chipbar{border-bottom:1px solid var(--line);background:var(--paper)}
.ay-chipbar-inner{
  display:flex;gap:10px;overflow-x:auto;scrollbar-width:none;
  padding-top:16px;padding-bottom:16px;
}
.ay-chipbar-inner::-webkit-scrollbar{display:none}
.ay-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;
  min-height:40px;padding:8px 18px;border-radius:999px;
  border:1px solid var(--line);background:var(--white);color:var(--ink);
  font-size:.875rem;font-weight:500;
  transition:background 180ms var(--ease),color 180ms var(--ease),border-color 180ms var(--ease);
}
.ay-chip:hover{border-color:var(--line-strong);color:var(--ink)}
.ay-chip.is-active{background:var(--ink);color:var(--paper);border-color:var(--ink);font-weight:700}
.ay-chip.is-active:hover{background:var(--ink-2);color:var(--paper)}

/* ---------- sections ---------- */
.ay-section{padding:var(--sec-pad) 0}
.ay-section-alt{background:var(--paper-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ay-section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:48px}
.ay-section-head h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.2;max-width:22em}
.ay-section-head p{margin-top:14px;color:var(--muted);font-size:1rem;max-width:36em}
.ay-num{
  display:inline-flex;align-items:center;justify-content:center;
  width:34px;height:34px;background:var(--ink);color:var(--lime);
  font-family:var(--font-mono);font-size:.8125rem;border-radius:2px;margin-bottom:18px;
}

/* ---------- gallery ---------- */
.grid-x.ay-gallery{margin-left:calc(var(--gutter) * -1);margin-right:calc(var(--gutter) * -1)}
.grid-x.ay-gallery > .cell{padding-left:var(--gutter);padding-right:var(--gutter);margin-bottom:28px}
.ay-gcard{
  display:flex;flex-direction:column;height:100%;
  background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  overflow:hidden;box-shadow:var(--shadow-1);
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),transform 180ms var(--ease);
}
.ay-gcard:hover{border-color:var(--line-strong);box-shadow:var(--shadow-2);transform:translateY(-2px)}
.ay-gcard figure{margin:0;overflow:hidden;aspect-ratio:16/10;background:var(--paper-2)}
.ay-gcard.is-large figure{aspect-ratio:16/9}
.ay-gcard img{width:100%;height:100%;object-fit:cover;transition:transform 320ms var(--ease)}
.ay-gcard:hover img{transform:scale(1.04)}
.ay-gcard-body{padding:20px 22px 24px;display:flex;flex-direction:column;gap:10px;flex:1}
.ay-gcard-body h3{font-size:1.25rem;line-height:1.45;transition:box-shadow 180ms var(--ease)}
.ay-gcard:hover .ay-gcard-body h3{box-shadow:inset 0 -1px 0 var(--lime)}
.ay-gcard-body p{font-size:.9375rem;line-height:1.8;color:var(--muted);margin:0}
.ay-tag{
  display:inline-block;align-self:flex-start;
  padding:3px 12px;border-radius:999px;background:var(--paper-2);
  font-size:.75rem;letter-spacing:.02em;color:var(--muted);
}
.ay-gcard-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.8125rem;color:var(--muted);margin-top:auto;padding-top:6px}
.ay-gcard-meta .dot{width:4px;height:4px;background:var(--line-strong);border-radius:50%}

/* ---------- rhythm strip ---------- */
.ay-rhythm{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.ay-rhythm-item{padding:32px 28px 32px 0;position:relative}
.ay-rhythm-item+.ay-rhythm-item{padding-left:28px;border-left:1px solid var(--line)}
.ay-rhythm-item h3{font-size:1.125rem;margin-bottom:10px;display:flex;align-items:center;gap:12px}
.ay-rhythm-item .rn{font-family:var(--font-mono);font-size:.75rem;color:var(--lime-deep);background:var(--ink);padding:2px 7px;border-radius:2px}
.ay-rhythm-item p{font-size:.9375rem;color:var(--muted);margin:0;max-width:none}

/* ---------- spec list ---------- */
.ay-spec{display:grid;grid-template-columns:1fr 1fr;gap:0 56px;border-top:1px solid var(--line)}
.ay-spec-row{display:grid;grid-template-columns:132px 1fr;gap:18px;padding:22px 0;border-bottom:1px solid var(--line)}
.ay-spec-row dt{font-weight:700;font-size:1rem;line-height:1.6}
.ay-spec-row dd{margin:0;color:var(--muted);font-size:.9375rem;line-height:1.8}
.ay-spec-note{margin-top:22px;font-size:.8125rem;color:var(--muted)}

/* ---------- FAQ ---------- */
.ay-faq-wrap{display:grid;grid-template-columns:1fr 1.5fr;gap:56px;align-items:start}
.ay-faq-aside h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.2;margin-bottom:16px}
.ay-faq-aside p{color:var(--muted);font-size:1rem;margin-bottom:24px}
.ay-faq{border-top:1px solid var(--line)}
.ay-faq-item{border-bottom:1px solid var(--line)}
.ay-faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:22px 0;background:none;border:0;cursor:pointer;
  text-align:left;font-family:var(--font-sans);font-size:1.125rem;font-weight:700;color:var(--ink);
  min-height:44px;line-height:1.5;
}
.ay-faq-q:hover{color:var(--ink-2)}
.ay-faq-q .ico{
  flex:0 0 26px;width:26px;height:26px;border:1px solid var(--line);border-radius:2px;
  display:inline-flex;align-items:center;justify-content:center;position:relative;
  transition:transform 320ms var(--ease),border-color 180ms var(--ease),background 180ms var(--ease);
}
.ay-faq-q .ico::before,.ay-faq-q .ico::after{content:"";position:absolute;background:var(--ink);transition:opacity 180ms var(--ease),background 180ms var(--ease)}
.ay-faq-q .ico::before{width:11px;height:1.5px}
.ay-faq-q .ico::after{width:1.5px;height:11px}
.ay-faq-q[aria-expanded="true"] .ico{transform:rotate(180deg);border-color:var(--ink);background:var(--lime)}
.ay-faq-q[aria-expanded="true"] .ico::after{opacity:0}
.ay-faq-a{max-height:0;overflow:hidden;transition:max-height 320ms var(--ease)}
.ay-faq-a-inner{
  padding:0 0 24px 18px;font-size:1rem;line-height:1.85;color:var(--muted);
  border-left:2px solid var(--lime);margin-left:2px;
}
.ay-faq-a-inner p{max-width:44em}

/* ---------- CTA ---------- */
.ay-cta{
  background:var(--ink);color:var(--paper);position:relative;overflow:hidden;
  border-top:1px solid var(--ink-2);
}
.ay-cta::before{
  content:"";position:absolute;inset:0;
  background-image:
    linear-gradient(to right,rgba(255,255,255,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:24px 24px;opacity:.5;pointer-events:none;
}
.ay-cta::after{
  content:"";position:absolute;right:-80px;top:-80px;width:320px;height:320px;
  border:1px solid rgba(200,240,79,.28);transform:rotate(18deg);pointer-events:none;
}
.ay-cta-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.ay-cta h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.22;color:var(--paper);margin-bottom:16px}
.ay-cta p{color:rgba(246,243,236,.72);font-size:1rem;max-width:32em}
.ay-form{display:flex;gap:10px;flex-wrap:wrap}
.ay-form input[type="email"]{
  flex:1 1 220px;min-height:48px;height:48px;padding:0 14px;
  background:rgba(255,255,255,.06);border:1px solid rgba(246,243,236,.28);
  border-radius:var(--r);color:var(--paper);font-family:var(--font-sans);font-size:.9375rem;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.ay-form input[type="email"]::placeholder{color:rgba(246,243,236,.45)}
.ay-form input[type="email"]:focus{
  outline:none;border-color:var(--lime);box-shadow:0 0 0 2px rgba(200,240,79,.30);
}
.ay-form .ay-btn{flex:0 0 auto;height:48px;min-height:48px}
.ay-form-note{margin-top:14px;font-size:.8125rem;color:rgba(246,243,236,.55);max-width:38em}

/* ---------- footer ---------- */
.ay-footer{background:var(--ink);color:rgba(246,243,236,.78);padding:72px 0 0;font-size:.9375rem}
.ay-footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:44px;padding-bottom:52px}
.ay-footer .brandline{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.ay-footer .brandline strong{font-family:var(--font-display);font-size:1.0625rem;color:var(--paper);font-weight:700}
.ay-footer .ay-logo-mark{border-color:rgba(246,243,236,.8)}
.ay-footer .ay-logo-mark::after{border-color:var(--ink)}
.ay-footer p{color:rgba(246,243,236,.6);font-size:.9375rem;line-height:1.8;max-width:26em;margin:0}
.ay-footer h4{
  font-family:var(--font-sans);font-size:.8125rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--paper);margin:0 0 18px;font-weight:700;
}
.ay-footer-links{display:flex;flex-direction:column;gap:11px}
.ay-footer-links a{color:rgba(246,243,236,.72);font-size:.875rem;min-height:24px;display:inline-flex;align-items:center}
.ay-footer-links a:hover{color:var(--lime)}
.ay-footer-contact{display:flex;flex-direction:column;gap:12px}
.ay-footer-contact span{display:flex;gap:10px;align-items:flex-start;font-size:.875rem;color:rgba(246,243,236,.7);line-height:1.7}
.ay-footer-contact i{color:var(--lime);margin-top:5px;font-size:.8125rem}
.ay-footer-bottom{
  border-top:1px solid rgba(246,243,236,.14);
  padding:22px 0 28px;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;
  font-size:.8125rem;color:rgba(246,243,236,.5);
}

/* ---------- animation ---------- */
.reveal{opacity:0;transform:translateY(12px);transition:opacity 500ms var(--ease),transform 500ms var(--ease)}
.reveal.is-in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:1023px){
  :root{--sec-pad:72px}
  .ay-header-inner{height:68px}
  .ay-pagehead-grid{grid-template-columns:1fr;gap:32px;padding-top:32px}
  .ay-pagehead-main{padding-bottom:36px}
  .ay-pagehead-visual{min-height:260px;padding-bottom:36px}
  .ay-pagehead-visual img{min-height:260px;max-height:300px}
  .ay-faq-wrap{grid-template-columns:1fr;gap:32px}
  .ay-cta-inner{grid-template-columns:1fr;gap:32px}
  .ay-footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .ay-spec{grid-template-columns:1fr;gap:0}
  .ay-rhythm{grid-template-columns:1fr}
  .ay-rhythm-item{padding:26px 0}
  .ay-rhythm-item+.ay-rhythm-item{padding-left:0;border-left:0;border-top:1px solid var(--line)}
  .ay-nav{
    position:fixed;left:0;right:0;top:0;bottom:0;z-index:120;
    background:var(--paper);flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:88px 24px 40px;overflow-y:auto;
    transform:translateX(100%);transition:transform 320ms var(--ease);
  }
  .ay-nav.is-open{transform:translateX(0)}
  .ay-nav a{font-size:1.5rem;font-weight:700;padding:16px 0;width:100%;border-bottom:1px solid var(--line)}
  .ay-nav a::after{display:none}
  .ay-nav a.is-active{color:var(--ink-2);box-shadow:inset 3px 0 0 var(--lime);padding-left:14px}
  .ay-nav-extra{display:flex;flex-direction:column;gap:14px;margin-top:28px}
  .ay-nav-extra .ay-btn{width:100%}
  .ay-nav-extra small{font-size:.8125rem;color:var(--muted);letter-spacing:.04em}
  .ay-burger{display:inline-flex}
  .ay-header-actions .ay-btn-ghost{display:none}
}
@media (max-width:767px){
  :root{--sec-pad:56px}
  .container{padding:0 18px}
  .ay-pagehead h1{font-size:clamp(1.9rem,7vw,2.4rem)}
  .ay-section-head{margin-bottom:32px}
  .ay-gcard-body{padding:18px}
  .ay-gcard-body h3{font-size:1.125rem}
  .ay-faq-q{font-size:1.0625rem;padding:18px 0}
  .ay-spec-row{grid-template-columns:1fr;gap:6px;padding:18px 0}
  .ay-footer{padding-top:56px}
  .ay-footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:36px}
  .ay-footer-bottom{flex-direction:column;gap:8px}
  .ay-form{flex-direction:column}
  .ay-form .ay-btn{width:100%}
  .ay-form input[type="email"]{width:100%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* roulang page: category4 */
/* ============ 设计变量 ============ */
:root{
  --ink:#0E211C;
  --ink-2:#16332B;
  --lime:#C8F04F;
  --lime-deep:#A9D63A;
  --paper:#F6F3EC;
  --paper-2:#EDE8DD;
  --line:rgba(14,33,28,.14);
  --muted:#5C6B64;
  --coral:#D9502C;
  --white:#FFFFFF;
  --radius:2px;
  --shadow-1:0 1px 0 rgba(14,33,28,.06);
  --shadow-2:0 10px 24px -12px rgba(14,33,28,.25);
  --ease:cubic-bezier(.22,.61,.36,1);
  --t:180ms cubic-bezier(.22,.61,.36,1);
  --t-long:320ms cubic-bezier(.22,.61,.36,1);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",Consolas,monospace;
}
/* ============ 基础重置 ============ */
*,*::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(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{display:block;max-width:100%;height:auto;}
a{color:var(--ink);text-decoration:none;transition:color var(--t),border-color var(--t);}
a:hover{color:var(--ink-2);}
p{margin:0 0 1.1em;}
p:last-child{margin-bottom:0;}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:700;color:var(--ink);}
ul,ol{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}
::selection{background:var(--lime);color:var(--ink);}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.eyebrow{
  font-family:var(--font-sans);
  font-size:.6875rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:700;
}
/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--radius);
  font-size:15px;font-weight:700;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background var(--t),color var(--t),transform var(--t),border-color var(--t),box-shadow var(--t);
}
.btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.btn-primary:hover{background:var(--lime-deep);border-color:var(--lime-deep);color:var(--ink);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--ink);}
.btn-ghost:hover{background:var(--ink);color:var(--paper);}
.btn-dark{background:var(--ink);color:var(--paper);border-color:var(--ink);}
.btn-dark:hover{background:var(--ink-2);border-color:var(--ink-2);color:var(--paper);transform:translateY(-1px);}
.btn-sm{padding:11px 18px;font-size:14px;}
.text-link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:15px;font-weight:700;
  border-bottom:1px solid var(--ink);padding-bottom:3px;
}
.text-link i{font-size:12px;transition:transform var(--t-long);}
.text-link:hover{border-color:var(--lime);color:var(--ink);}
.text-link:hover i{transform:translateX(4px);}
/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:border-color var(--t-long),box-shadow var(--t-long);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.header-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;height:76px;
}
.logo{display:flex;align-items:center;gap:10px;flex:none;}
.ay-logo-mark{
  position:relative;flex:none;display:inline-block;
  width:24px;height:24px;
  border:1.5px solid var(--ink);border-radius:2px;
}
.ay-logo-mark::after{
  content:"";position:absolute;right:-2px;bottom:-2px;
  width:8px;height:8px;background:var(--lime);
  border:1.5px solid var(--ink);border-radius:1px;
}
.logo-text{
  font-family:var(--font-display);font-weight:700;
  font-size:17px;letter-spacing:-.01em;line-height:1.2;color:var(--ink);
}
.ay-nav{display:flex;align-items:center;gap:28px;}
.ay-nav a{
  position:relative;display:inline-block;
  padding:6px 0;font-size:15px;font-weight:500;color:var(--ink);
}
.ay-nav a::after{
  content:"";position:absolute;left:0;bottom:0;
  width:100%;height:2px;background:var(--lime);
  transform:scaleX(0);transform-origin:left;
  transition:transform var(--t-long);
}
.ay-nav a:hover::after,.ay-nav a:focus-visible::after{transform:scaleX(1);}
.ay-nav a.is-active{font-weight:700;color:var(--ink);}
.ay-nav a.is-active::after{transform:scaleX(1);}
.header-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;position:relative;
  width:44px;height:44px;padding:0;
  background:transparent;border:1px solid var(--line);border-radius:2px;
  cursor:pointer;transition:border-color var(--t);
}
.nav-toggle:hover{border-color:var(--ink);}
.nav-toggle span{
  position:absolute;left:12px;right:12px;height:2px;background:var(--ink);
  transition:transform var(--t-long),opacity var(--t-long);
}
.nav-toggle span:nth-child(1){top:17px;}
.nav-toggle span:nth-child(2){top:25px;}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(4px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span:nth-child(2){transform:translateY(-4px) rotate(-45deg);}
/* ============ 页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  border-bottom:1px solid var(--line);
  background:var(--paper);
}
.page-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(14,33,28,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(14,33,28,.05) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 78%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.9),transparent 78%);
}
.page-hero-grid{
  position:relative;
  display:grid;grid-template-columns:1.05fr .95fr;
  gap:56px;align-items:center;
  padding:56px 0 64px;min-height:360px;
}
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:14px;color:var(--muted);margin-bottom:20px;
}
.crumbs a{color:var(--muted);border-bottom:1px solid transparent;padding-bottom:1px;}
.crumbs a:hover{color:var(--ink);border-color:var(--ink);}
.crumbs .sep{opacity:.45;}
.crumbs .now{color:var(--ink);font-weight:700;max-width:22ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
.page-hero h1{
  font-size:clamp(2.25rem,4.4vw,3.4rem);
  line-height:1.12;letter-spacing:-.02em;margin-bottom:20px;
}
.page-hero h1 em{font-style:normal;color:var(--ink-2);}
.hero-lead{
  font-size:1.0625rem;line-height:1.85;color:var(--muted);
  max-width:34em;margin-bottom:28px;
}
.hero-shot{position:relative;}
.hero-shot img{
  width:100%;aspect-ratio:4/3;object-fit:cover;
  border-radius:var(--radius);border:1px solid var(--line);
}
.hero-shot figcaption{
  position:absolute;left:0;bottom:0;
  display:flex;align-items:center;gap:10px;
  padding:12px 18px;background:var(--paper);
  border-top:1px solid var(--line);border-right:1px solid var(--line);
  font-size:12.5px;color:var(--muted);letter-spacing:.04em;
}
.hero-shot figcaption b{
  font-family:var(--font-mono);font-size:12px;
  color:var(--ink);letter-spacing:.12em;
}
/* ============ 分类切换条 ============ */
.cat-bar{border-bottom:1px solid var(--line);background:var(--paper);}
.cat-bar-inner{
  display:flex;gap:10px;overflow-x:auto;
  padding:16px 0;scrollbar-width:none;
}
.cat-bar-inner::-webkit-scrollbar{display:none;}
.cat-chip{
  flex:none;padding:9px 16px;
  border:1px solid var(--line);border-radius:999px;
  background:var(--white);color:var(--ink);
  font-size:14px;font-weight:500;line-height:1.4;white-space:nowrap;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t);
}
.cat-chip:hover{border-color:var(--ink);transform:translateY(-1px);color:var(--ink);}
.cat-chip.is-current{background:var(--ink);color:var(--paper);border-color:var(--ink);font-weight:700;}
.cat-chip.is-current:hover{color:var(--paper);}
/* ============ 引述卡 ============ */
.quote-section{padding:88px 0 8px;}
.quote-card{
  position:relative;overflow:hidden;
  background:var(--ink);color:var(--paper);
  padding:56px 56px 44px;border-radius:var(--radius);
}
.quote-card::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(246,243,236,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(246,243,236,.06) 1px,transparent 1px);
  background-size:24px 24px;
  -webkit-mask-image:linear-gradient(120deg,rgba(0,0,0,.85),transparent 62%);
  mask-image:linear-gradient(120deg,rgba(0,0,0,.85),transparent 62%);
}
.quote-mark{
  position:relative;display:block;
  font-family:var(--font-display);font-size:96px;line-height:.62;
  color:var(--lime);font-weight:700;
}
.quote-text{
  position:relative;
  font-family:var(--font-display);
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.72;letter-spacing:-.01em;
  max-width:32em;margin:20px 0 34px;color:var(--paper);
}
.quote-person{
  position:relative;
  display:flex;align-items:center;gap:16px;
  border-top:1px solid rgba(246,243,236,.18);
  padding-top:26px;
}
.quote-avatar{
  display:flex;align-items:center;justify-content:center;
  width:48px;height:48px;flex:none;
  background:var(--lime);color:var(--ink);
  border-radius:2px;font-family:var(--font-display);
  font-weight:700;font-size:18px;
}
.quote-person strong{display:block;font-size:16px;color:var(--paper);font-weight:700;}
.quote-person span{display:block;font-size:13.5px;color:rgba(246,243,236,.68);}
.quote-tag{
  margin-left:auto;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  color:rgba(246,243,236,.55);
}
/* ============ 故事条目 ============ */
.stories-section{padding:24px 0 88px;}
.stories-head{
  display:flex;align-items:flex-end;justify-content:space-between;
  gap:24px;flex-wrap:wrap;
  padding-bottom:26px;border-bottom:1px solid var(--line);
}
.stories-head h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.2;}
.stories-head p{color:var(--muted);font-size:15px;margin-top:10px;max-width:36em;}
.story{
  display:grid;grid-template-columns:1fr 1fr;
  gap:56px;align-items:center;
  padding:64px 0;border-bottom:1px solid var(--line);
}
.story:last-child{border-bottom:0;padding-bottom:0;}
.story.is-flip .story-media{order:2;}
.story-media{position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid var(--line);}
.story-media img{
  width:100%;aspect-ratio:1/1;object-fit:cover;
  transition:transform var(--t-long);
}
.story-media:hover img{transform:scale(1.04);}
.story-index{
  position:absolute;left:0;top:0;
  display:flex;align-items:center;justify-content:center;
  min-width:40px;height:40px;padding:0 10px;
  background:var(--ink);color:var(--lime);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;
}
.story-body .tag{
  display:inline-block;
  padding:5px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--paper-2);
  font-size:12.5px;color:var(--ink-2);letter-spacing:.02em;
  margin-bottom:18px;
}
.story-body h3{
  font-size:clamp(1.4rem,2.2vw,1.85rem);
  line-height:1.35;letter-spacing:-.01em;margin-bottom:18px;
}
.story-body p{color:var(--muted);font-size:1rem;line-height:1.85;max-width:34em;}
.story-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px;
  margin:24px 0;padding-top:20px;border-top:1px solid var(--line);
  font-size:13.5px;color:var(--muted);
}
.story-meta .who{color:var(--ink);font-weight:700;}
.story-meta .dot{width:4px;height:4px;background:var(--line);border-radius:50%;}
/* ============ 投稿 ============ */
.share-section{
  padding:88px 0 96px;
  background:var(--paper-2);
  border-top:1px solid var(--line);
}
.share-grid{display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:start;}
.share-intro h2{font-size:clamp(1.75rem,3vw,2.35rem);line-height:1.22;margin-bottom:18px;}
.share-intro > p{color:var(--muted);font-size:1rem;max-width:30em;}
.steps{margin-top:32px;border-top:1px solid var(--line);}
.step{
  display:grid;grid-template-columns:44px 1fr;gap:16px;
  padding:20px 0;border-bottom:1px solid var(--line);
}
.step-num{
  display:flex;align-items:center;justify-content:center;
  width:36px;height:36px;
  background:var(--ink);color:var(--lime);
  font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;
}
.step h4{font-family:var(--font-sans);font-size:15px;font-weight:700;margin-bottom:4px;}
.step p{font-size:14px;line-height:1.7;color:var(--muted);margin:0;}
.story-form{
  background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius);
  padding:36px 36px 32px;
  box-shadow:var(--shadow-1);
}
.form-head{
  display:flex;align-items:baseline;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
  padding-bottom:20px;margin-bottom:24px;border-bottom:1px solid var(--line);
}
.form-head h3{font-size:1.25rem;line-height:1.4;}
.form-head span{font-size:12.5px;color:var(--muted);letter-spacing:.04em;}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:18px;}
.field{margin-bottom:20px;}
.field label{
  display:block;margin-bottom:8px;
  font-size:13px;font-weight:700;color:var(--ink);letter-spacing:.02em;
}
.field label i{color:var(--coral);font-style:normal;margin-left:2px;}
.field input[type="text"],
.field input[type="email"],
.field textarea{
  width:100%;
  border:1px solid var(--line);
  background:var(--paper);
  border-radius:var(--radius);
  color:var(--ink);
  font-family:inherit;font-size:15px;
  padding:0 14px;height:48px;
  transition:border-color var(--t),box-shadow var(--t),background var(--t);
}
.field textarea{
  height:auto;min-height:154px;padding:13px 14px;line-height:1.75;resize:vertical;
}
.field input::placeholder,.field textarea::placeholder{color:rgba(92,107,100,.75);}
.field input:focus,.field textarea:focus{
  outline:none;border-color:var(--ink);background:var(--white);
  box-shadow:0 0 0 2px rgba(200,240,79,.38);
}
.form-actions{
  display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  margin-top:6px;
}
.form-note{font-size:12.5px;line-height:1.7;color:var(--muted);margin-top:16px;max-width:44em;}
.form-error{
  display:none;align-items:center;gap:8px;
  margin-top:14px;font-size:13px;color:var(--coral);
}
.form-error i{font-size:13px;}
.form-error.is-on{display:flex;}
/* ============ 页脚 ============ */
.ay-footer{background:var(--ink);color:var(--paper);padding:64px 0 0;}
.ay-footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;
  gap:40px;padding-bottom:48px;
}
.ay-footer h4{
  font-family:var(--font-sans);
  font-size:12.5px;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:rgba(246,243,236,.58);
  margin:0 0 16px;
}
.brandline{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.brandline strong{
  font-family:var(--font-display);font-size:16px;
  font-weight:700;color:var(--paper);line-height:1.3;
}
.brandline .ay-logo-mark{border-color:var(--paper);}
.brandline .ay-logo-mark::after{border-color:var(--paper);background:var(--lime);}
.ay-footer p{
  font-size:14px;line-height:1.8;color:rgba(246,243,236,.72);
  max-width:26em;margin:0;
}
.ay-footer-links{display:flex;flex-direction:column;gap:10px;}
.ay-footer-links a{
  width:fit-content;font-size:14px;color:rgba(246,243,236,.82);
  border-bottom:1px solid transparent;padding-bottom:1px;
}
.ay-footer-links a:hover{color:var(--lime);border-color:var(--lime);}
.ay-footer-contact{display:flex;flex-direction:column;gap:12px;font-size:14px;color:rgba(246,243,236,.8);}
.ay-footer-contact span{display:flex;align-items:flex-start;gap:9px;line-height:1.65;}
.ay-footer-contact i{color:var(--lime);font-size:13px;margin-top:5px;flex:none;}
.ay-footer-bottom{
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  padding:20px 0 30px;border-top:1px solid rgba(246,243,236,.16);
  font-size:12.5px;color:rgba(246,243,236,.6);line-height:1.7;
}
/* ============ 进场动效 ============ */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}
/* ============ 响应式 ============ */
@media (max-width:1023px){
  .page-hero-grid{grid-template-columns:1fr;gap:36px;padding:44px 0 52px;min-height:0;}
  .hero-shot img{aspect-ratio:16/9;}
  .quote-section{padding:64px 0 8px;}
  .quote-card{padding:44px 36px 36px;}
  .story{grid-template-columns:1fr;gap:32px;padding:52px 0;}
  .story.is-flip .story-media{order:0;}
  .story-media img{aspect-ratio:16/10;}
  .share-grid{grid-template-columns:1fr;gap:40px;}
  .ay-footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .stories-section{padding-bottom:64px;}
  .share-section{padding:64px 0 72px;}
}
@media (max-width:900px){
  .header-inner{height:64px;}
  .nav-toggle{display:block;}
  .header-cta{display:none;}
  .ay-nav{
    position:fixed;left:0;right:0;top:64px;bottom:0;
    z-index:95;
    display:flex;flex-direction:column;align-items:stretch;
    gap:0;padding:20px 24px 40px;
    background:var(--paper);
    border-top:1px solid var(--line);
    transform:translateX(100%);
    visibility:hidden;
    overflow-y:auto;
    transition:transform var(--t-long),visibility var(--t-long);
  }
  .ay-nav.is-open{transform:translateX(0);visibility:visible;}
  .ay-nav a{
    font-size:24px;font-weight:700;padding:18px 0;
    border-bottom:1px solid var(--line);
  }
  .ay-nav a::after{display:none;}
  .ay-nav a.is-active{color:var(--ink);}
  body.nav-open{overflow:hidden;}
}
@media (max-width:640px){
  body{font-size:1rem;}
  .container{padding:0 18px;}
  .logo-text{font-size:15px;}
  .page-hero-grid{padding:36px 0 44px;}
  .page-hero h1{font-size:clamp(1.9rem,7vw,2.4rem);}
  .hero-lead{font-size:1rem;}
  .quote-card{padding:36px 22px 30px;}
  .quote-mark{font-size:72px;}
  .quote-text{font-size:19px;line-height:1.68;}
  .quote-tag{display:none;}
  .story{padding:44px 0;gap:24px;}
  .story-body h3{font-size:1.3rem;}
  .form-row{grid-template-columns:1fr;gap:0;}
  .story-form{padding:26px 20px 24px;}
  .ay-footer-grid{grid-template-columns:1fr;gap:32px;}
  .ay-footer{padding-top:52px;}
  .ay-footer-bottom{flex-direction:column;gap:8px;}
  .stories-head{align-items:flex-start;}
  .form-actions .btn{width:100%;}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
}

/* roulang page: category5 */
:root{
  --ink:#0E211C;
  --ink-2:#16332B;
  --lime:#C8F04F;
  --lime-deep:#A9D63A;
  --paper:#F6F3EC;
  --paper-2:#EDE8DD;
  --line:rgba(14,33,28,.14);
  --muted:#5C6B64;
  --coral:#D9502C;
  --white:#FFFFFF;
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono",Consolas,monospace;
  --radius:2px;
  --shadow-1:0 1px 0 rgba(14,33,28,.06);
  --shadow-2:0 10px 24px -12px rgba(14,33,28,.25);
  --ease:cubic-bezier(.22,.61,.36,1);
  --pad-y:104px;
}
*,*::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(--font-sans);
  font-size:1.0625rem;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:var(--ink);text-decoration:none;}
a:hover{color:var(--ink);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;font-family:var(--font-display);font-weight:700;letter-spacing:-.01em;color:var(--ink);}
p{margin:0 0 1em;max-width:38em;}
p:last-child{margin-bottom:0;}
ul,ol{margin:0;padding:0;}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px;}
::selection{background:var(--lime);color:var(--ink);}

.container{width:100%;max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}

/* ---------- 通用组件 ---------- */
.ay-eyebrow{
  font-family:var(--font-sans);
  font-size:.6875rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:700;
  margin-bottom:16px;
  display:block;
}
.ay-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:48px;
  padding:14px 24px;
  border-radius:var(--radius);
  font-size:.9375rem;
  font-weight:700;
  line-height:1;
  border:1px solid transparent;
  cursor:pointer;
  transition:background-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease),border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.ay-btn-primary{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.ay-btn-primary:hover{background:var(--lime-deep);border-color:var(--lime-deep);color:var(--ink);transform:translateY(-1px);box-shadow:var(--shadow-2);}
.ay-btn-ghost{background:transparent;color:var(--ink);border-color:rgba(14,33,28,.4);}
.ay-btn-ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink);transform:translateY(-1px);}
.ay-btn-onInk{background:var(--lime);color:var(--ink);border-color:var(--lime);}
.ay-btn-onInk:hover{background:var(--paper);color:var(--ink);border-color:var(--paper);transform:translateY(-1px);}
.ay-textlink{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-size:.9375rem;
  font-weight:700;
  color:var(--ink);
  border-bottom:1px solid rgba(14,33,28,.45);
  padding-bottom:2px;
  transition:border-color 180ms var(--ease),color 180ms var(--ease);
}
.ay-textlink span{transition:transform 180ms var(--ease);}
.ay-textlink:hover{border-bottom-color:var(--lime);}
.ay-textlink:hover span{transform:translateX(4px);}

/* ---------- 顶部导航 ---------- */
.ay-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--paper);
  border-bottom:1px solid transparent;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.ay-header.is-stuck{border-bottom-color:var(--line);box-shadow:var(--shadow-1);}
.ay-header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  height:76px;
}
.ay-logo{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.ay-logo-mark{
  position:relative;
  width:24px;height:24px;
  display:inline-block;
  background:var(--ink);
  clip-path:polygon(0 0,100% 0,100% 62%,62% 62%,62% 100%,0 100%);
  flex:0 0 auto;
}
.ay-logo-mark::after{
  content:"";
  position:absolute;
  width:7px;height:7px;
  right:3px;top:3px;
  background:var(--lime);
}
.ay-logo-text{display:flex;flex-direction:column;line-height:1.15;}
.ay-logo-text strong{
  font-family:var(--font-display);
  font-size:1.0625rem;
  font-weight:700;
  letter-spacing:-.01em;
  color:var(--ink);
}
.ay-logo-text em{
  font-style:normal;
  font-size:.6875rem;
  letter-spacing:.3em;
  color:var(--muted);
  margin-top:2px;
}
.ay-nav{display:flex;align-items:center;gap:28px;}
.ay-nav a{
  position:relative;
  font-size:.9375rem;
  font-weight:500;
  color:var(--ink);
  padding:8px 0;
  transition:color 180ms var(--ease);
}
.ay-nav a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 180ms var(--ease);
}
.ay-nav a:hover::after,
.ay-nav a:focus-visible::after{transform:scaleX(1);}
.ay-nav a.is-active{font-weight:700;}
.ay-nav a.is-active::after{transform:scaleX(1);}
.ay-header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto;}
.ay-header-cta{min-height:42px;padding:11px 18px;font-size:.875rem;}
.ay-burger{
  display:none;
  width:40px;height:40px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:transparent;
  cursor:pointer;
  position:relative;
  padding:0;
}
.ay-burger span{
  position:absolute;
  left:11px;right:11px;
  height:1.5px;
  background:var(--ink);
  transition:transform 180ms var(--ease),opacity 180ms var(--ease);
}
.ay-burger span:nth-child(1){top:16px;}
.ay-burger span:nth-child(2){bottom:16px;}
.ay-burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.ay-burger[aria-expanded="true"] span:nth-child(2){transform:translateY(-6px) rotate(-45deg);}

/* 移动面板 */
.ay-mobile-panel{
  position:fixed;
  top:64px;left:0;right:0;bottom:0;
  background:var(--paper);
  border-top:1px solid var(--line);
  padding:32px 24px 40px;
  display:none;
  flex-direction:column;
  overflow-y:auto;
  z-index:79;
}
.ay-mobile-panel.is-open{display:flex;}
.ay-mobile-nav{display:flex;flex-direction:column;}
.ay-mobile-nav a{
  font-family:var(--font-display);
  font-size:1.5rem;
  font-weight:700;
  padding:16px 0;
  border-bottom:1px solid var(--line);
  min-height:44px;
}
.ay-mobile-nav a.is-active{color:var(--ink);}
.ay-mobile-nav a.is-active::before{
  content:"";
  display:inline-block;
  width:8px;height:8px;
  background:var(--lime);
  margin-right:10px;
  vertical-align:middle;
}
.ay-mobile-actions{margin-top:28px;display:flex;flex-direction:column;gap:14px;}
.ay-mobile-contact{font-size:.875rem;color:var(--muted);margin-top:18px;}

/* ---------- 页头 ---------- */
.ay-pagehead{
  background:var(--paper);
  border-bottom:1px solid var(--line);
  position:relative;
  overflow:hidden;
}
.ay-crumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:.875rem;
  color:var(--muted);
  padding:22px 0 0;
  flex-wrap:wrap;
}
.ay-crumb a{color:var(--muted);border-bottom:1px solid transparent;transition:color 180ms var(--ease),border-color 180ms var(--ease);}
.ay-crumb a:hover{color:var(--ink);border-bottom-color:var(--ink);}
.ay-crumb span[aria-hidden]{color:rgba(14,33,28,.3);}
.ay-crumb .current{color:var(--ink);font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw;}
.ay-pagehead-grid{
  align-items:center;
  padding-top:32px;
  padding-bottom:56px;
  min-height:340px;
}
.ay-pagehead h1{
  font-size:clamp(2.25rem,4.6vw,3.6rem);
  line-height:1.12;
  letter-spacing:-.02em;
  margin-bottom:18px;
}
.ay-pagehead-lead{
  font-size:1.0625rem;
  line-height:1.8;
  color:var(--muted);
  max-width:32em;
  margin-bottom:22px;
}
.ay-pagehead-figure{
  position:relative;
  margin:0;
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--paper-2);
  box-shadow:var(--shadow-1);
}
.ay-pagehead-figure img{width:100%;height:100%;object-fit:cover;}
.ay-pagehead-figure::after{
  content:"";
  position:absolute;
  right:-12px;bottom:-12px;
  width:96px;height:96px;
  background:var(--lime);
  z-index:-1;
}

/* ---------- 分类 chip 切换条 ---------- */
.ay-chips-wrap{border-bottom:1px solid var(--line);background:var(--paper);}
.ay-chips{
  display:flex;
  gap:10px;
  overflow-x:auto;
  padding:16px 0;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.ay-chips::-webkit-scrollbar{display:none;}
.ay-chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  height:40px;
  padding:0 18px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:.875rem;
  font-weight:500;
  color:var(--ink);
  background:transparent;
  transition:background-color 180ms var(--ease),border-color 180ms var(--ease),color 180ms var(--ease),transform 180ms var(--ease);
}
.ay-chip:hover{background:var(--paper-2);border-color:rgba(14,33,28,.3);transform:translateY(-1px);}
.ay-chip.is-current{background:var(--ink);border-color:var(--ink);color:var(--paper);font-weight:700;}
.ay-chip.is-current:hover{background:var(--ink-2);color:var(--paper);}

/* ---------- 板块 ---------- */
.ay-section{padding:var(--pad-y) 0;}
.ay-section--tight{padding:72px 0;}
.ay-section-head{max-width:46em;margin-bottom:44px;}
.ay-section-head h2{font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.2;margin-bottom:16px;}
.ay-section-head p{color:var(--muted);font-size:1rem;margin:0;}

/* ---------- 主体：侧栏 + 手风琴 ---------- */
.ay-faq-section{border-bottom:1px solid var(--line);}
.ay-side{position:sticky;top:104px;}
.ay-side h2{font-size:clamp(1.6rem,2.6vw,2.1rem);line-height:1.25;margin-bottom:16px;}
.ay-side > p{color:var(--muted);font-size:.9375rem;line-height:1.85;margin-bottom:28px;}
.ay-contact-card{
  background:var(--ink);
  color:rgba(246,243,236,.82);
  border-radius:var(--radius);
  padding:28px 24px;
  position:relative;
  overflow:hidden;
}
.ay-contact-card::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:24px 24px;
  pointer-events:none;
}
.ay-contact-card > *{position:relative;}
.ay-contact-card h3{color:var(--paper);font-size:1.125rem;line-height:1.4;margin-bottom:12px;}
.ay-contact-card p{font-size:.875rem;line-height:1.8;color:rgba(246,243,236,.74);margin-bottom:20px;max-width:none;}
.ay-contact-card .ay-card-mail{
  display:block;
  font-family:var(--font-mono);
  font-size:.8125rem;
  color:var(--lime);
  margin-bottom:20px;
  word-break:break-all;
}
.ay-contact-card .ay-btn{width:100%;}
.ay-contact-card .ay-card-note{
  font-size:.75rem;
  color:rgba(246,243,236,.55);
  margin-top:14px;
  margin-bottom:0;
}

.ay-acc-group{margin-bottom:40px;}
.ay-acc-group:last-child{margin-bottom:0;}
.ay-acc-group h3{
  font-family:var(--font-sans);
  font-size:.6875rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
  font-weight:700;
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
  margin-bottom:0;
}
.ay-faq-item{border-bottom:1px solid var(--line);}
.ay-faq-h{margin:0;}
.ay-faq-q{
  width:100%;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  text-align:left;
  background:transparent;
  border:0;
  padding:22px 0;
  cursor:pointer;
  font-family:var(--font-display);
  font-size:1.125rem;
  font-weight:700;
  line-height:1.5;
  color:var(--ink);
  min-height:44px;
  transition:color 180ms var(--ease);
}
.ay-faq-q:hover{color:var(--ink-2);}
.ay-faq-icon{
  position:relative;
  width:16px;height:16px;
  flex:0 0 auto;
}
.ay-faq-icon::before,
.ay-faq-icon::after{
  content:"";
  position:absolute;
  background:var(--ink);
  transition:transform 320ms var(--ease),opacity 320ms var(--ease);
}
.ay-faq-icon::before{left:0;right:0;top:7px;height:1.5px;}
.ay-faq-icon::after{top:0;bottom:0;left:7px;width:1.5px;}
.ay-faq-item.is-open .ay-faq-icon::after{transform:scaleY(0);opacity:0;}
.ay-faq-a{
  max-height:0;
  overflow:hidden;
  transition:max-height 320ms var(--ease);
}
.ay-faq-a-inner{
  padding:0 0 24px 18px;
  border-left:2px solid var(--lime);
  margin-bottom:4px;
}
.ay-faq-a-inner p{font-size:.9375rem;line-height:1.9;color:var(--muted);max-width:44em;margin:0;}

/* ---------- 三步流程 ---------- */
.ay-steps{border-top:1px solid var(--line);}
.ay-steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;}
.ay-step{
  padding:32px 28px 8px 0;
  border-right:1px solid var(--line);
}
.ay-step:last-child{border-right:0;padding-right:0;}
.ay-step:not(:first-child){padding-left:28px;}
.ay-step-num{
  font-family:var(--font-mono);
  font-size:.8125rem;
  font-weight:400;
  color:var(--ink);
  background:var(--ink);
  color:var(--lime);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:34px;height:34px;
  border-radius:var(--radius);
  margin-bottom:18px;
}
.ay-step h3{font-size:1.25rem;line-height:1.45;margin-bottom:10px;}
.ay-step p{font-size:.9375rem;line-height:1.85;color:var(--muted);margin:0;max-width:26em;}

/* ---------- 更正记录 ---------- */
.ay-log-list{list-style:none;border-top:1px solid var(--line);}
.ay-log-list li{
  display:flex;
  gap:28px;
  align-items:baseline;
  padding:22px 0;
  border-bottom:1px solid var(--line);
  flex-wrap:wrap;
}
.ay-log-list .d{
  font-family:var(--font-mono);
  font-size:.8125rem;
  color:var(--muted);
  flex:0 0 auto;
  letter-spacing:.02em;
}
.ay-log-list .t{flex:1 1 320px;font-size:.9375rem;line-height:1.85;color:var(--ink);margin:0;max-width:52em;}
.ay-log-list .t a{border-bottom:1px solid rgba(14,33,28,.4);}
.ay-log-list .t a:hover{border-bottom-color:var(--lime);}

/* ---------- CTA ---------- */
.ay-cta{
  background:var(--ink);
  color:var(--paper);
  padding:88px 0;
  position:relative;
  overflow:hidden;
}
.ay-cta::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:28px 28px;
  pointer-events:none;
}
.ay-cta-grid{position:relative;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.ay-cta h2{color:var(--paper);font-size:clamp(1.75rem,3vw,2.5rem);line-height:1.2;margin-bottom:14px;}
.ay-cta p{color:rgba(246,243,236,.75);font-size:1rem;line-height:1.85;margin:0;max-width:26em;}
.ay-form-row{display:flex;gap:10px;}
.ay-form-row input[type="email"]{
  flex:1 1 auto;
  height:48px;
  min-width:0;
  padding:0 16px;
  border:1px solid rgba(246,243,236,.35);
  border-radius:var(--radius);
  background:rgba(255,255,255,.04);
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:.9375rem;
  transition:border-color 180ms var(--ease),box-shadow 180ms var(--ease),background-color 180ms var(--ease);
}
.ay-form-row input[type="email"]::placeholder{color:rgba(246,243,236,.5);}
.ay-form-row input[type="email"]:focus{
  outline:none;
  border-color:var(--lime);
  box-shadow:0 0 0 2px rgba(200,240,79,.3);
  background:rgba(255,255,255,.07);
}
.ay-form-row .ay-btn{flex:0 0 auto;}
.ay-form-note{font-size:.75rem;color:rgba(246,243,236,.55);margin-top:14px;max-width:34em;}

/* ---------- 页脚 ---------- */
.ay-footer{background:var(--ink);color:rgba(246,243,236,.78);padding:72px 0 0;}
.ay-footer-grid{
  display:grid;
  grid-template-columns:1.5fr .8fr .8fr 1.2fr;
  gap:40px;
  padding-bottom:56px;
}
.ay-footer h4{
  font-family:var(--font-sans);
  font-size:.6875rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--paper);
  font-weight:700;
  margin:0 0 18px;
}
.ay-footer .brandline{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.ay-footer .ay-logo-mark{background:var(--paper);}
.ay-footer .ay-logo-mark::after{background:var(--lime);}
.ay-footer .brandline strong{
  font-family:var(--font-display);
  font-size:1rem;
  color:var(--paper);
  letter-spacing:-.01em;
}
.ay-footer p{font-size:.875rem;line-height:1.85;color:rgba(246,243,236,.66);max-width:32em;margin:0;}
.ay-footer-links{display:flex;flex-direction:column;gap:12px;}
.ay-footer-links a{
  font-size:.875rem;
  color:rgba(246,243,236,.72);
  width:fit-content;
  border-bottom:1px solid transparent;
  transition:color 180ms var(--ease),border-color 180ms var(--ease);
}
.ay-footer-links a:hover{color:var(--lime);border-bottom-color:var(--lime);}
.ay-footer-contact{display:flex;flex-direction:column;gap:12px;}
.ay-footer-contact span{
  display:flex;
  gap:10px;
  font-size:.875rem;
  line-height:1.7;
  color:rgba(246,243,236,.7);
  align-items:flex-start;
}
.ay-footer-contact i{color:var(--lime);margin-top:5px;font-size:.8125rem;}
.ay-footer-bottom{
  border-top:1px solid rgba(246,243,236,.16);
  padding:22px 0;
  display:flex;
  justify-content:space-between;
  gap:16px;
  flex-wrap:wrap;
  font-size:.8125rem;
  color:rgba(246,243,236,.5);
}

/* ---------- 滚动出现 ---------- */
.fade-up{opacity:0;transform:translateY(12px);transition:opacity 500ms var(--ease),transform 500ms var(--ease);}
.fade-up.is-in{opacity:1;transform:translateY(0);}
.fade-up.d1{transition-delay:60ms;}
.fade-up.d2{transition-delay:120ms;}
.fade-up.d3{transition-delay:180ms;}

/* ---------- 栅格补偿 ---------- */
.ay-grid-fix{margin-left:-14px;margin-right:-14px;}
.ay-grid-fix > .cell{padding-left:14px;padding-right:14px;}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  :root{--pad-y:72px;}
  .ay-nav{gap:18px;}
  .ay-nav a{font-size:.875rem;}
  .ay-header-cta{display:none;}
  .ay-side{position:static;margin-bottom:40px;}
  .ay-cta-grid{grid-template-columns:1fr;gap:28px;}
  .ay-footer-grid{grid-template-columns:1fr 1fr;gap:36px;}
  .ay-pagehead-figure{max-width:520px;}
  .ay-pagehead-grid{min-height:0;padding-bottom:44px;}
  .ay-steps-grid{grid-template-columns:1fr;}
  .ay-step{border-right:0;border-bottom:1px solid var(--line);padding:28px 0;}
  .ay-step:not(:first-child){padding-left:0;}
  .ay-step:last-child{border-bottom:0;}
}
@media screen and (max-width:767px){
  .ay-nav{display:none;}
  .ay-burger{display:block;}
  .ay-header-inner{height:64px;}
  .ay-logo-text strong{font-size:.9375rem;}
  .ay-logo-text em{font-size:.625rem;letter-spacing:.24em;}
  .ay-section{padding:56px 0;}
  .ay-section--tight{padding:48px 0;}
  .ay-cta{padding:56px 0;}
  .ay-footer{padding-top:56px;}
  .ay-footer-grid{grid-template-columns:1fr;gap:32px;padding-bottom:40px;}
  .ay-faq-q{font-size:1.0625rem;padding:20px 0;}
  .ay-pagehead h1{font-size:clamp(1.9rem,7vw,2.6rem);}
  .ay-form-row{flex-direction:column;}
  .ay-form-row .ay-btn{width:100%;}
  .ay-log-list li{gap:8px;flex-direction:column;}
  .ay-crumb .current{max-width:70vw;}
}
@media screen and (max-width:519px){
  .container{padding-left:18px;padding-right:18px;}
  .ay-pagehead-lead{font-size:1rem;}
  .ay-chip{height:38px;padding:0 14px;font-size:.8125rem;}
  .ay-contact-card{padding:24px 20px;}
  .ay-faq-a-inner{padding-left:14px;}
  .ay-footer-bottom{flex-direction:column;gap:8px;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important;}
  .fade-up{opacity:1;transform:none;}
}