/* ============ reset ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid #19C6B0;outline-offset:3px}

/* ============ variables ============ */
:root{
  --ink:#173A32;
  --paper:#F4F1EA;
  --spring:#D98FA6;
  --summer:#4F8EA8;
  --autumn:#D98A3D;
  --winter:#B9C2C4;
  --spark:#19C6B0;
  --black:#171A17;
  --line:#E4E6E2;
  --violet:#5B4B8A;
  --font-display:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC",sans-serif;
  --font-body:"Noto Serif SC","Source Han Serif SC","Songti SC",serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","Roboto Mono",monospace;
  --shell:1240px;
  --pad:clamp(18px,4vw,44px);
  --r:0px;
}

/* ============ base ============ */
body{
  background:var(--paper);
  color:var(--black);
  font-family:var(--font-body);
  font-size:clamp(16px,1.05vw,18px);
  line-height:1.8;
  letter-spacing:.01em;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}
.sk-main{flex:1 0 auto}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;letter-spacing:-.015em;line-height:1.22;color:var(--ink)}
.sk-mono,.sk-stamp{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}

/* ============ shell ============ */
.sk-shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--pad)}

/* ============ skip link ============ */
.sk-skip{
  position:fixed;top:0;left:0;z-index:120;
  transform:translateY(-120%);
  background:var(--spark);color:var(--ink);
  font-family:var(--font-display);font-weight:700;font-size:14px;
  padding:10px 18px;
  transition:transform .2s ease;
}
.sk-skip:focus{transform:translateY(0)}

/* ============ header ============ */
.sk-header{
  position:sticky;top:0;z-index:90;
  background:var(--ink);
  color:var(--paper);
  border-bottom:1px solid rgba(25,198,176,.28);
}
.sk-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(244,241,234,.14)}
.sk-progress__bar{display:block;height:100%;width:0;background:var(--spark);transition:width .12s linear}
.sk-header__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:clamp(14px,2.4vw,32px);
  min-height:72px;
  padding-block:12px;
}
.sk-brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.sk-brand__mark{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(19px,2.1vw,23px);letter-spacing:.04em;
  color:var(--paper);white-space:nowrap;
}
.sk-stamp{
  display:inline-block;
  font-size:12px;line-height:1;
  padding:6px 8px 5px;
  color:var(--ink);background:var(--spark);
  border:1px solid var(--ink);
  white-space:nowrap;
}
.sk-brand__stamp{background:var(--spark);color:var(--ink)}
.sk-header__actions{display:flex;align-items:center;gap:clamp(12px,2vw,26px)}
.sk-nav__list{display:flex;align-items:center;gap:clamp(10px,1.7vw,22px);flex-wrap:wrap}
.sk-nav__link{
  position:relative;
  display:inline-block;
  font-family:var(--font-display);font-weight:600;
  font-size:14px;letter-spacing:.03em;
  color:rgba(244,241,234,.82);
  padding:6px 1px;
  transition:color .18s ease;
}
.sk-nav__link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--spark);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.sk-nav__link:hover{color:var(--paper)}
.sk-nav__link:hover::after{transform:scaleX(1)}
.sk-nav__link[aria-current="page"]{color:var(--paper)}
.sk-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.sk-cta{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-display);font-weight:700;font-size:13.5px;letter-spacing:.04em;
  padding:10px 16px;
  color:var(--ink);background:var(--paper);
  border:1px solid var(--paper);
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.sk-cta::before{content:"";width:6px;height:6px;background:var(--autumn);flex:0 0 auto}
.sk-cta:hover{background:var(--spark);border-color:var(--spark);color:var(--ink)}

/* nav toggle */
.sk-nav-toggle{
  display:none;
  align-items:center;gap:8px;
  padding:9px 12px;
  border:1px solid rgba(244,241,234,.4);
  color:var(--paper);
  font-family:var(--font-display);font-size:13px;font-weight:700;
}
.sk-nav-toggle__bar{display:none}
.sk-nav-toggle__label{letter-spacing:.08em}

/* ============ footer ============ */
.sk-footer{
  background:var(--ink);color:var(--paper);
  border-top:1px solid rgba(25,198,176,.28);
  padding-block:clamp(34px,5vw,64px) clamp(22px,3vw,34px);
  margin-top:clamp(40px,6vw,80px);
}
.sk-footer__grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1.2fr 1fr;
  gap:clamp(22px,3.4vw,48px);
  align-items:start;
}
.sk-footer__col--brand{max-width:320px}
.sk-footer__mark{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(19px,2vw,23px);letter-spacing:.05em;
  color:var(--paper);margin-bottom:10px;
}
.sk-footer__lede{
  font-family:var(--font-body);font-size:14.5px;line-height:1.85;
  color:rgba(244,241,234,.74);margin-bottom:14px;
}
.sk-footer__title{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--spark);
  padding-bottom:8px;margin-bottom:12px;
  border-bottom:1px solid rgba(244,241,234,.18);
}
.sk-footer__list li{
  font-size:14px;line-height:2;
  color:rgba(244,241,234,.8);
}
.sk-footer__list a{
  color:rgba(244,241,234,.86);
  border-bottom:1px solid transparent;
  transition:border-color .18s ease,color .18s ease;
}
.sk-footer__list a:hover{color:var(--spark);border-bottom-color:var(--spark)}
.sk-footer__meta{
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.02em;
  color:rgba(244,241,234,.55);
  margin-top:8px;
}
.sk-footer__title+.sk-footer__list+.sk-footer__meta{margin-top:14px}

/* ============ buttons ============ */
.sk-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  font-family:var(--font-display);font-weight:700;font-size:14px;letter-spacing:.04em;
  padding:13px 22px;
  background:var(--ink);color:var(--paper);
  border:1px solid var(--ink);
  transition:background .18s ease,color .18s ease,transform .18s ease;
}
.sk-btn:hover{background:var(--spark);color:var(--ink);border-color:var(--spark)}
.sk-btn--ghost{background:transparent;color:var(--ink);border-color:var(--ink)}
.sk-btn--ghost:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.sk-btn--season{background:var(--autumn);color:var(--ink);border-color:var(--autumn)}

/* ============ eyebrow / crumb ============ */
.sk-eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--ink);
  margin-bottom:14px;
}
.sk-eyebrow::before{content:"";width:22px;height:1px;background:var(--ink);display:block}
.sk-crumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:rgba(23,26,23,.55);
  padding-block:18px 0;
}
.sk-crumb__link{color:var(--ink);border-bottom:1px solid var(--line)}
.sk-crumb__link:hover{border-bottom-color:var(--spark);color:var(--violet)}

/* ============ sections / grid ============ */
.sk-section{padding-block:clamp(34px,5.5vw,72px)}
.sk-section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:clamp(20px,3vw,34px)}
.sk-section__head h2{font-size:clamp(24px,3vw,34px)}
.sk-grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:clamp(12px,1.6vw,22px);
}
.sk-card{
  position:relative;
  grid-column:span 4;
  background:#FBFAF6;
  border:1px solid var(--line);
  padding:clamp(18px,2.2vw,28px);
  transition:border-color .2s ease,box-shadow .2s ease;
}
.sk-card::before{
  content:"";position:absolute;left:0;top:0;right:0;height:3px;background:var(--ink);
}
.sk-card.is-spring::before{background:var(--spring)}
.sk-card.is-summer::before{background:var(--summer)}
.sk-card.is-autumn::before{background:var(--autumn)}
.sk-card.is-winter::before{background:var(--winter)}
.sk-card:hover{border-color:var(--ink);box-shadow:4px 4px 0 rgba(23,58,50,.08)}
.sk-note{
  font-family:var(--font-display);
  font-size:13px;line-height:1.7;letter-spacing:.02em;
  color:rgba(23,26,23,.62);
}

/* ============ accordion ============ */
.sk-accordion{border-top:1px solid var(--line)}
.sk-accordion__item{border-bottom:1px solid var(--line)}
.sk-accordion__trigger{
  display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
  width:100%;text-align:left;padding:18px 0;
  font-family:var(--font-display);font-weight:700;font-size:16px;color:var(--ink);
}
.sk-accordion__trigger::after{
  content:"+";flex:0 0 auto;
  font-family:var(--font-mono);font-size:20px;line-height:1;
  color:var(--violet);transition:color .18s ease;
}
.sk-accordion__trigger[aria-expanded="true"]::after{content:"–";color:var(--spark)}
.sk-accordion__panel{overflow:hidden;height:0;transition:height .26s ease}
.sk-accordion__panel[hidden]{display:block}
.sk-accordion__panel p{padding-bottom:18px;max-width:64ch;color:rgba(23,26,23,.82)}

/* ============ figure ============ */
.sk-figure{margin:0;width:100%}
.sk-figure__frame{
  position:relative;width:100%;
  aspect-ratio:4/3;
  background:
    linear-gradient(180deg,rgba(23,58,50,.05),rgba(23,58,50,.12)),
    var(--paper);
  border:1px solid var(--line);
  overflow:hidden;
}
.sk-figure--wide .sk-figure__frame{aspect-ratio:16/9}
.sk-figure--tall .sk-figure__frame{aspect-ratio:3/4}
.sk-figure__frame>img{width:100%;height:100%;object-fit:cover;display:block}
.sk-figure__cap{
  font-family:var(--font-display);font-size:12.5px;letter-spacing:.02em;
  color:rgba(23,26,23,.6);
  margin-top:9px;padding-left:10px;border-left:2px solid var(--spark);
}

/* ============ reveal / top ============ */
.sk-reveal{opacity:0;transform:translateY(14px);transition:opacity .3s ease,transform .3s ease}
.sk-reveal.is-visible{opacity:1;transform:none}
.sk-top{
  position:fixed;right:clamp(14px,2.4vw,28px);bottom:clamp(14px,2.4vw,28px);z-index:80;
  width:44px;height:44px;display:inline-flex;align-items:center;justify-content:center;
  background:var(--ink);color:var(--paper);
  border:1px solid var(--spark);
  font-family:var(--font-mono);font-size:15px;
  opacity:0;pointer-events:none;transition:opacity .2s ease,background .2s ease;
}
.sk-top.is-visible{opacity:1;pointer-events:auto}
.sk-top:hover{background:var(--spark);color:var(--ink)}

/* ============ responsive ============ */
@media (max-width:1024px){
  .sk-card{grid-column:span 6}
  .sk-footer__grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:860px){
  .sk-nav-toggle{display:inline-flex;order:2}
  .sk-header__inner{flex-wrap:wrap;min-height:64px}
  .sk-brand{order:1}
  .sk-header__actions{
    order:3;flex-basis:100%;flex-direction:column;align-items:stretch;gap:12px;
    padding-bottom:12px;
  }
  .sk-nav{
    display:none;
    border-top:1px solid rgba(244,241,234,.16);
    padding-top:12px;
  }
  .sk-nav[data-open]{display:block}
  .sk-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .sk-nav__list li{border-bottom:1px solid rgba(244,241,234,.1)}
  .sk-nav__link{display:block;padding:12px 2px;font-size:15px}
  .sk-nav__link::after{bottom:6px;height:2px}
  .sk-cta{justify-content:center;width:100%}
  .sk-section__head{flex-direction:column;align-items:flex-start}
}
@media (max-width:640px){
  .sk-card{grid-column:span 12}
  .sk-footer__grid{grid-template-columns:1fr;gap:24px}
  .sk-footer__col--brand{max-width:none}
  .sk-btn{width:100%}
}

/* ============ reduced motion ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition-duration:.001ms !important;animation-duration:.001ms !important}
  .sk-reveal{opacity:1;transform:none}
  .sk-progress__bar{transition:none}
}