@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@300;400;500;600;700&family=Share+Tech+Mono&display=swap');

:root{
  --ink:#1f1726;
  --purple:#56228b;
  --brown:#8b4513;
  --sand:#f3ebe0;
  --paper:#fffaf4;
  --line:rgba(31,23,38,.14);
  --mono:"Fira Code","Share Tech Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --cjk:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --soft:0 12px 32px rgba(31,23,38,.08);
}

*{box-sizing:border-box}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}

body{
  margin:0;
  padding:62px 0 0;
  font-family:var(--mono),var(--cjk);
  font-size:16.5px;
  line-height:1.78;
  color:var(--ink);
  background-color:var(--sand);
  background-image:
    radial-gradient(58rem 40rem at 110% -12%, rgba(86,34,139,.12), transparent 62%),
    radial-gradient(46rem 34rem at -18% 42%, rgba(139,69,19,.11), transparent 66%),
    repeating-linear-gradient(90deg, rgba(31,23,38,.026) 0 1px, transparent 1px 7px);
  background-attachment:fixed;
  overflow-x:hidden;
}

img{max-width:100%;height:auto;display:block}

a{color:var(--purple);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--brown)}

p{margin:0 0 16px}
h2{font-size:clamp(20px,3.2vw,27px);line-height:1.32;margin:0 0 14px;font-weight:600;letter-spacing:-.005em}
h3{font-size:18.5px;line-height:1.42;margin:26px 0 10px;font-weight:600;color:var(--purple)}
ul,ol{padding-left:1.25em;margin:0 0 16px}
li{margin:0 0 8px}
li::marker{color:var(--brown)}
strong{color:var(--purple)}
figure{margin:18px 0;border-radius:20px;overflow:hidden;background:#fff}
figcaption{font-size:15px;line-height:1.6;color:rgba(31,23,38,.68);padding:10px 14px}

small{display:block;font-size:12.5px;letter-spacing:.24em;line-height:1.6;color:var(--brown);margin:0 0 6px}

.skip{position:absolute;top:0;left:-9999px;z-index:99;background:var(--purple);color:#fff;padding:12px 20px;border-radius:0 0 18px 0}
.skip:focus{left:0;color:#fff}

.mark{
  position:fixed;top:8px;left:12px;z-index:70;
  display:flex;width:38px;height:38px;align-items:center;justify-content:center;
  border-radius:52% 46% 50% 44%;
  background:var(--purple);color:#fff;line-height:1;
  box-shadow:0 6px 16px rgba(86,34,139,.32);
}
.mark:hover{color:#fff;background:var(--brown)}
.mark-img{width:30px;height:30px;border-radius:50%;object-fit:cover}
.mark-glyph{font-size:16px}

.thinbar{
  position:fixed;top:0;left:0;right:0;z-index:50;height:52px;
  display:flex;align-items:center;gap:10px;
  padding:0 14px 0 58px;
  background:rgba(243,235,224,.94);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.thinbar-brand{font-size:13px;letter-spacing:.28em;color:var(--brown);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

.burger{
  margin-left:auto;flex:0 0 auto;
  min-height:40px;padding:9px 18px;
  border:1px solid rgba(86,34,139,.42);border-radius:999px;
  background:transparent;color:var(--purple);
  font-family:inherit;font-size:16px;line-height:1;cursor:pointer;
}
.burger:hover{background:rgba(86,34,139,.1)}

.scrim{
  position:fixed;inset:0;z-index:55;
  margin:0;padding:0;border:0;
  background:rgba(31,23,38,.44);
  opacity:0;pointer-events:none;transition:opacity .3s ease;
}

.rail{
  position:fixed;top:0;bottom:0;left:0;z-index:60;
  width:min(80vw,300px);
  padding:64px 12px 28px;
  overflow-y:auto;
  background:rgba(255,250,244,.98);
  border-right:1px solid var(--line);
  box-shadow:14px 0 40px rgba(31,23,38,.16);
  transform:translateX(-104%);
  transition:transform .3s ease;
}
body.rail-open .rail{transform:none}
body.rail-open .scrim{opacity:1;pointer-events:auto}
body.rail-open{overflow:hidden}

.rail-grp{padding:4px 0 10px;border-bottom:1px dashed rgba(86,34,139,.24)}
.rail-grp:last-child{border-bottom:0}
.rail-grp summary{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  min-height:44px;padding:8px 10px;cursor:pointer;
  list-style:none;font-size:12.5px;letter-spacing:.24em;color:var(--brown);
}
.rail-grp summary::-webkit-details-marker{display:none}
.rail-grp summary::after{content:"▾";font-size:12px;color:var(--purple);transition:transform .25s ease}
.rail-grp[open] summary::after{transform:rotate(180deg)}

.rail-list{list-style:none;margin:0;padding:0;display:grid;gap:4px}
.rail-list li{margin:0}
.rail-list a{
  display:flex;align-items:center;gap:10px;
  min-height:44px;padding:9px 10px;
  border-radius:14px 20px 14px 20px;
  color:var(--ink);font-size:16px;line-height:1.5;
}
.rail-list a:hover{background:rgba(86,34,139,.1);color:var(--purple)}
.rail-num{font-size:11.5px;letter-spacing:.08em;color:var(--purple);opacity:.85;flex:0 0 auto}
.rail-txt{min-width:0}

main{
  display:grid;grid-template-columns:minmax(0,1fr);gap:24px;
  max-width:1180px;margin:0 auto;
  padding:16px 16px 36px;
}
div{min-width:0}

.hero{
  display:flex;flex-direction:column;gap:14px;
  min-height:min(70vh,620px);
  padding:10px 0 6px;text-align:left;
}
.hero-brand{margin:0;font-size:12.5px;letter-spacing:.3em;color:var(--brown)}
.hero h1{margin:0;font-size:clamp(27px,5.8vw,50px);line-height:1.2;font-weight:600;letter-spacing:-.015em}
.hero-dek{margin:0;max-width:56ch;color:rgba(31,23,38,.78);font-size:16.5px}
.hero-fig{
  margin:auto 0 0;
  border-radius:22px 32px 22px 32px;
  overflow:hidden;background:#fff;box-shadow:var(--soft);
}
.hero-fig img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;transform-origin:center top}

main > div > article{
  background:var(--paper);
  border-radius:28px 22px 28px 22px;
  border-bottom:3px solid rgba(139,69,19,.48);
  box-shadow:var(--soft);
  padding:24px 20px 26px;
  margin:22px 0;
  scroll-margin-top:70px;
}
main > div > article > :first-child{margin-top:0}
main > div > article > :last-child{margin-bottom:0}

.js main > div > article{
  opacity:0;transform:translateY(20px);
  transition:opacity .62s ease, transform .62s cubic-bezier(.22,.7,.3,1);
  transition-delay:calc(var(--d,0) * 70ms);
}
.js main > div > article.in{opacity:1;transform:none}

@keyframes rise{from{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}
.js .hero{animation:rise .8s cubic-bezier(.22,.7,.3,1) both}

.side{min-width:0;font-size:16px}
.side-blob{width:104px;height:104px;margin:0 0 -36px;opacity:.9}
.side-title{margin:0 0 12px;font-size:19px;line-height:1.35}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:6px}
.side-list li{margin:0}
.side-list a{
  display:block;min-height:44px;padding:10px 12px;
  border-radius:16px 22px 16px 22px;
  background:rgba(255,250,244,.75);
  border-left:3px solid rgba(86,34,139,.42);
  color:var(--ink);line-height:1.5;
  transition:background .2s ease, border-color .2s ease, transform .2s ease;
}
.side-list a:hover{background:#fff;border-left-color:var(--brown);transform:translateX(2px)}

footer{max-width:1180px;margin:34px auto 0;padding:0 16px 40px}

.foot-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  padding:28px 22px;
  border-radius:26px 34px 26px 34px;
  background:linear-gradient(135deg,var(--purple) 0%,#3c1a5e 58%,var(--brown) 100%);
  color:#fff;box-shadow:var(--soft);
}
.foot-cta-line{margin:0;font-size:clamp(19px,4.4vw,26px);line-height:1.35;letter-spacing:.06em}
.foot-btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-height:46px;padding:11px 24px;border-radius:999px;
  background:#fff;color:var(--purple);font-size:16px;font-weight:600;line-height:1;
}
.foot-btn:hover{background:var(--sand);color:var(--brown)}

.foot-nav{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  margin:26px 0 16px;padding-top:22px;border-top:1px solid var(--line);
}
.foot-nav dl{margin:0}
.foot-nav dt{font-size:12.5px;letter-spacing:.24em;color:var(--brown);margin-bottom:6px}
.foot-nav dd{margin:0}
.foot-nav a{display:inline-block;min-height:44px;padding:10px 0;font-size:16px;line-height:1.5;color:var(--ink)}
.foot-nav a:hover{color:var(--purple)}

.foot-copy{border-top:1px solid var(--line);padding-top:14px;font-size:15px;color:rgba(31,23,38,.62)}
.foot-copy p{margin:0}

@media (min-width:900px){
  body{padding:52px 0 0 232px;overflow-x:auto}
  body.rail-open{overflow:auto}

  .thinbar{left:232px;z-index:45;padding-left:16px}
  .burger{display:none}
  .scrim{display:none}

  .rail{
    top:52px;bottom:0;width:232px;z-index:40;
    padding:14px 12px 30px;
    transform:none;
    background:rgba(255,250,244,.9);
    box-shadow:none;
  }

  main{grid-template-columns:minmax(0,1fr) 260px;gap:30px;padding:26px 30px 58px;align-items:start}
  main > div > article{padding:32px 32px 34px;scroll-margin-top:76px}

  .side{position:sticky;top:76px}

  footer{margin-top:44px;padding:0 30px 60px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .js .hero{animation:none}
  .js main > div > article{opacity:1;transform:none;transition:none}
  .hero-fig img{transform:none !important}
}
</｜DSML｜ parameter>
</｜DSML｜ invoke>
</｜DSML｜ calls>

button[aria-expanded]{min-width:44px;min-height:44px}