@import url('https://fonts.googleapis.com/css2?family=Archivo:wght@300;400;500;600;700&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root{
  --blue:#c8e0f4;
  --pink:#f5e0e8;
  --ink:#171f26;
  --line:rgba(23,31,38,.2);
  --mute:rgba(23,31,38,.62);
  --softblue:#dcecf9;
  --softpink:#f8e7ee;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  font-family:'Archivo','Space Grotesk',system-ui,-apple-system,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background:linear-gradient(160deg,#eaf2fa 0%,#f2eef2 45%,#f9e9ef 100%);
  background-attachment:fixed;
  -webkit-text-size-adjust:100%;
}

body.nav-open{overflow:hidden}

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

p{margin:0 0 16px}

h1,h2,h3{font-weight:700;letter-spacing:-.01em}

h1{font-size:clamp(2rem,6.4vw,3.3rem);line-height:1.16;margin:0 0 14px}

.ticker{
  margin:0;
  padding:8px 20px;
  font-size:1rem;
  letter-spacing:.06em;
  text-align:center;
  color:var(--ink);
  background:linear-gradient(90deg,var(--pink),#f8edf2);
  border-bottom:1px solid var(--line);
}

.top{
  position:sticky;
  top:0;
  z-index:20;
  background:linear-gradient(180deg,#eaf2fa,#eef4fa);
  border-bottom:1px solid var(--line);
}

.navswitch{
  position:absolute;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

.brandrow{
  max-width:1120px;
  margin:0 auto;
  padding:14px 20px 4px;
  display:flex;
  align-items:center;
  gap:12px;
}

.logo{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:42px;height:42px;
  border-radius:14px;
  text-decoration:none;
  background:linear-gradient(145deg,#e2eef8,#c4d9ea);
  box-shadow:-4px -4px 12px rgba(255,255,255,.9),4px 4px 12px rgba(23,31,38,.16);
}

.mark-glyph{font-weight:700}
.mark-img{width:34px;height:34px;border-radius:10px}

.wordmark{margin:0;font-size:1.22rem;font-weight:700}

.menuro{
  max-width:1120px;
  margin:0 auto;
  padding:8px 20px 14px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}

.burger{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:10px 20px;
  border-radius:16px;
  cursor:pointer;
  font-size:1rem;
  font-weight:600;
  background:linear-gradient(145deg,#e2eef8,#c6dbeb);
  box-shadow:-5px -5px 15px rgba(255,255,255,.9),5px 5px 15px rgba(23,31,38,.16);
  transition:transform .15s ease,box-shadow .15s ease;
}

.burger:active{
  transform:scale(.97);
  box-shadow:inset -3px -3px 8px rgba(255,255,255,.85),inset 3px 3px 8px rgba(23,31,38,.18);
}

.burger-lines{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.burger-lines i{display:block;height:2px;background:var(--ink);border-radius:2px}

.cl{display:none}
#navswitch:checked ~ .menuro .op{display:none}
#navswitch:checked ~ .menuro .cl{display:inline}

.menuhint{margin:0;font-size:1rem;color:var(--mute);text-align:right}

.drawer{
  position:fixed;
  inset:0;
  z-index:10;
  padding:150px 20px 40px;
  overflow:auto;
  background:linear-gradient(160deg,#e8f1fa,#f9ebf0 70%,#f5e0e8);
  opacity:0;
  visibility:hidden;
  transform:translateY(-10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}

#navswitch:checked ~ .drawer{opacity:1;visibility:visible;transform:none}

.drawer ol{list-style:none;margin:0 auto;padding:0;max-width:720px}
.drawer li + li{border-top:1px solid var(--line)}

.drawer a{
  display:flex;
  align-items:center;
  gap:16px;
  min-height:58px;
  padding:14px 6px;
  text-decoration:none;
  font-size:1.15rem;
  font-weight:600;
  transition:transform .18s ease,color .18s ease;
}

.drawer a:hover{transform:translateX(6px);color:#16334a}

.drawer .num{font-size:1rem;color:var(--mute);font-variant-numeric:tabular-nums;min-width:2em}

main{display:block}

.wrap{
  max-width:1120px;
  margin:0 auto;
  padding:0 20px;
  display:grid;
  grid-template-columns:minmax(0,1fr) 288px;
  gap:44px;
  align-items:start;
}

.primary{min-width:0}

.hero{
  position:relative;
  overflow:clip;
  padding:26px 0 34px;
  min-height:45vh;
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);
  gap:26px;
  align-items:center;
}

.hero-mark{
  position:absolute;
  top:-.12em;
  right:-.04em;
  z-index:0;
  font-size:clamp(7rem,23vw,13rem);
  font-weight:700;
  line-height:.9;
  color:rgba(23,31,38,.07);
  pointer-events:none;
  user-select:none;
}

.hero-copy{position:relative;z-index:1}

.eyebrow{margin:0 0 10px;font-size:1rem;letter-spacing:.14em;color:var(--mute)}

.lead{margin:0 0 20px;font-size:1.06rem;color:#243440;max-width:36em}

.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin:0}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:48px;
  padding:12px 22px;
  border-radius:16px;
  text-decoration:none;
  font-size:1rem;
  font-weight:600;
  color:var(--ink);
  background:linear-gradient(145deg,#dcecf9,#c3d9ec);
  box-shadow:-5px -5px 15px rgba(255,255,255,.9),5px 5px 15px rgba(23,31,38,.15);
  transition:transform .15s ease,box-shadow .15s ease;
}

.btn:hover{transform:translateY(-2px)}
.btn:active{
  transform:scale(.98);
  box-shadow:inset -3px -3px 8px rgba(255,255,255,.9),inset 3px 3px 8px rgba(23,31,38,.2);
}
.btn.ghost{background:linear-gradient(145deg,#f8e8ee,#ecced9)}

.hero-stack{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  align-items:start;
}

.hero-stack figure{
  margin:0;
  border:1px solid var(--line);
  border-radius:16px;
  overflow:hidden;
  background:linear-gradient(145deg,var(--softpink),#fdf6f9);
  aspect-ratio:4/5;
}

.hero-stack figure.b{transform:translateY(30px)}
.hero-stack img{width:100%;height:100%;object-fit:cover;margin:0}
.hero-stack .ph{height:100%;min-height:0}

.ph{display:block;width:100%;height:100%;min-height:140px;background:linear-gradient(145deg,#c0d8ec,#eecdd9)}

article{min-width:0}

article > section{
  padding-top:26px;
  margin-top:34px;
  border-top:1px solid var(--line);
  scroll-margin-top:132px;
}

article h2{font-size:clamp(1.4rem,3.4vw,1.85rem);line-height:1.3;margin:0 0 14px}
article h3{font-size:1.15rem;line-height:1.4;margin:26px 0 10px}
article small{display:block;font-size:1rem;letter-spacing:.16em;color:var(--mute);margin:0 0 6px}
article p{margin:0 0 16px}
article ul,article ol{padding-left:1.35em;margin:0 0 16px}
article li{margin:0 0 8px}
article a{color:#1b3d59;text-decoration:underline;text-underline-offset:3px}
article blockquote{
  margin:0 0 18px;
  padding:14px 18px;
  border-left:3px solid #ecced9;
  background:rgba(255,255,255,.55);
}
article img{border:1px solid var(--line);margin:0 0 16px}
article figure{margin:0 0 18px}
article table{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:1rem}
article th,article td{border:1px solid var(--line);padding:9px 11px;text-align:left}

.side{position:sticky;top:132px;display:grid;gap:18px}

.side-plate{
  border:1px solid var(--line);
  border-radius:0;
  padding:18px 18px 10px;
  background:rgba(255,255,255,.55);
}

.side-plate.soft{background:linear-gradient(160deg,rgba(245,224,232,.9),rgba(200,224,244,.55))}

.side small{display:block;font-size:1rem;letter-spacing:.16em;color:var(--mute);margin:0 0 4px}
.side h2{font-size:1.05rem;line-height:1.4;margin:0 0 12px}
.side p{font-size:1rem;margin:0 0 14px}

.toc{list-style:none;margin:0;padding:0}
.toc li + li{border-top:1px solid var(--line)}
.toc a{display:block;min-height:44px;padding:11px 0;text-decoration:none;font-size:1rem;color:#1b3d59}
.toc a:hover{text-decoration:underline}

.foot{
  max-width:1120px;
  margin:64px auto 0;
  padding:34px 20px 30px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:30px;
  align-items:flex-start;
}

.foot-brand{flex:1 1 320px;min-width:0}

.giant{
  margin:0 0 10px;
  font-size:clamp(2rem,8.6vw,4.4rem);
  line-height:.95;
  font-weight:700;
  letter-spacing:-.035em;
}

.foot-desc{margin:0;font-size:1rem;color:var(--mute);max-width:26em}

.foot-nav{flex:0 1 auto}
.foot-nav ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:0 18px}
.foot-nav a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:10px 0;
  text-decoration:none;
  font-size:1rem;
  border-bottom:1px solid transparent;
}
.foot-nav a:hover{border-bottom-color:var(--ink)}

.foot-copy{
  flex:1 1 100%;
  margin:0;
  padding-top:14px;
  border-top:1px solid var(--line);
  font-size:1rem;
  color:var(--mute);
}

.rv{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.rv.in{opacity:1;transform:none}

@media (max-width:900px){
  .wrap{grid-template-columns:minmax(0,1fr);gap:28px}
  .side{position:static;order:2;grid-template-columns:1fr}
  .hero{grid-template-columns:minmax(0,1fr);min-height:0;gap:20px;padding-top:18px}
  .hero-stack figure.b{transform:translateY(0)}
  .hero-mark{font-size:clamp(6rem,30vw,10rem)}
}

@media (max-width:520px){
  body{font-size:16px}
  .wordmark{font-size:1.1rem}
  .foot{gap:18px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv{opacity:1;transform:none;transition:none}
  .btn,.burger,.drawer a,.drawer{transition:none}
}

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