@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;700&display=swap');

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

:root{
  --p:#6514ff;
  --b:#bf00ff;
  --ink:#1c1726;
  --soft:#cfc4ea;
  --line:rgba(191,0,255,.3);
  --card:rgba(255,255,255,.055);
}

[hidden]{display:none!important}

html{
  background:var(--ink);
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  overflow-x:hidden;
  overflow-x:clip;
}
html.lock,html.lock body{overflow:hidden}

body{
  margin:0;
  padding-bottom:112px;
  overflow-x:clip;
  font-family:"DM Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.78;
  color:#f6f1ff;
}

img,svg,video,iframe{max-width:100%}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(58vw 58vw at 14% 16%,rgba(101,20,255,.62),transparent 70%),
    radial-gradient(50vw 50vw at 84% 8%,rgba(191,0,255,.55),transparent 70%),
    radial-gradient(70vw 46vw at 68% 92%,rgba(101,20,255,.34),transparent 70%);
  background-size:140% 140%;
  background-position:0% 0%;
  filter:blur(9px);
  animation:drift 28s ease-in-out infinite alternate;
}
@keyframes drift{
  from{background-position:0% 0%}
  to{background-position:100% 58%}
}

main,.foot,.dock{position:relative;z-index:1}

a{color:#e9dcff}

.skip{
  position:absolute;
  left:12px;
  top:-64px;
  z-index:120;
  padding:12px 18px;
  border-radius:0 0 18px 18px;
  background:var(--p);
  color:#fff;
  text-decoration:none;
  font-weight:700;
  transition:top .2s ease;
}
.skip:focus{top:0}

.wrap{
  max-width:1120px;
  margin:0 auto;
  padding:0 18px;
}

/* ---------- hero ---------- */
.hero{
  position:relative;
  overflow:hidden;
  min-height:100svh;
  display:grid;
  place-items:center;
  padding:104px 4px 128px;
  border:1px solid var(--line);
  border-top:0;
  border-radius:0 0 40px 40px;
  background:linear-gradient(180deg,rgba(28,23,38,.5),rgba(28,23,38,.86));
  box-shadow:0 30px 90px rgba(12,8,22,.5);
}
.hero::before,.hero::after{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  width:44px;
  opacity:.55;
  background:repeating-linear-gradient(180deg,rgba(255,255,255,.42) 0 10px,transparent 10px 28px);
  -webkit-mask-image:linear-gradient(transparent,#000 18%,#000 82%,transparent);
  mask-image:linear-gradient(transparent,#000 18%,#000 82%,transparent);
}
.hero::before{left:0}
.hero::after{right:0}

.hero-art{
  position:relative;
  z-index:1;
  width:100%;
  max-width:720px;
  min-width:0;
  text-align:center;
  padding:0 10px;
}
.hero-art h1{
  margin:0 auto 20px;
  max-width:17ch;
  font-size:clamp(2.1rem,7.2vw,4rem);
  line-height:1.08;
  letter-spacing:-.035em;
  font-weight:700;
  overflow-wrap:break-word;
  background:linear-gradient(96deg,#fff 12%,#d9c6ff 52%,#bf00ff 96%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.lede{
  margin:0 auto;
  max-width:52ch;
  color:var(--soft);
  font-size:1.05rem;
  overflow-wrap:break-word;
}

.collage{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:16px;
  max-width:580px;
  margin:40px auto 0;
}
.collage:empty{display:none}
.collage .shot{
  width:100%;
  max-width:100%;
  height:auto;
  aspect-ratio:4/3;
  object-fit:cover;
  border-radius:28px;
  border:1px solid rgba(255,255,255,.16);
  box-shadow:0 26px 60px rgba(101,20,255,.5);
  transition:transform .25s ease;
}
.collage .s1{transform:rotate(-3deg) translateY(12px)}
.collage .s2{transform:rotate(3deg) translateY(-12px)}
.collage:hover .s1{transform:rotate(-1deg) translateY(6px)}
.collage:hover .s2{transform:rotate(1deg) translateY(-6px)}

.band{
  position:absolute;
  left:-4%;
  right:-4%;
  bottom:0;
  height:16px;
  background:linear-gradient(90deg,var(--p),var(--b) 60%,#ff5fd2);
  transform:skewY(-1.6deg);
  transform-origin:bottom left;
}

/* ---------- body / toc / prose ---------- */
.block{
  display:grid;
  grid-template-columns:210px minmax(0,1fr);
  gap:52px;
  padding:64px 0 24px;
  align-items:start;
}

.toc{
  position:sticky;
  top:20px;
  min-width:0;
  max-width:100%;
  padding:22px 18px;
  border:1px solid var(--line);
  border-radius:28px;
  background:rgba(28,23,38,.72);
  box-shadow:0 20px 48px rgba(12,8,22,.45);
}
.toc h2{
  margin:0 0 10px;
  font-size:1rem;
  letter-spacing:.18em;
  color:#e4d3ff;
  font-weight:500;
}
.toc dl{margin:0;display:grid;gap:2px;min-width:0;max-width:100%}
.toc dt,.toc dd{margin:0;min-width:0}
.toc a{
  display:block;
  padding:11px 4px;
  min-height:44px;
  color:#efe6ff;
  text-decoration:none;
  font-size:.95rem;
  line-height:1.4;
  border-bottom:1px dashed rgba(255,255,255,.12);
  transition:color .2s ease,transform .2s ease;
}
.toc a:hover{color:#ff7ae0;transform:translateX(4px)}

h2,h3{font-weight:700;letter-spacing:-.02em}

hr{
  border:0;
  height:3px;
  width:62px;
  margin:0 0 22px;
  border-radius:99px;
  background:linear-gradient(90deg,var(--p),var(--b));
}

.prose{min-width:0;overflow-wrap:break-word}
.prose > section{
  margin:0 0 48px;
  padding:30px 24px 34px;
  border:1px solid var(--line);
  border-radius:28px;
  background:var(--card);
  box-shadow:0 22px 60px rgba(12,8,22,.42);
  scroll-margin-top:34px;
  transition:transform .25s ease,box-shadow .25s ease;
}
.prose > section:hover{
  transform:translateY(-3px);
  box-shadow:0 30px 76px rgba(101,20,255,.26);
}
.prose h2{
  margin:0 0 14px;
  font-size:clamp(1.5rem,4.2vw,2.3rem);
  line-height:1.22;
}
.prose h3{
  margin:0 0 12px;
  font-size:clamp(1.18rem,3vw,1.5rem);
}
.prose p{margin:0 0 18px;color:#e2daf5}
.prose p:last-child{margin-bottom:0}
.prose ul,.prose ol{margin:0 0 18px;padding-left:1.25em;color:#e2daf5}
.prose li{margin:0 0 8px}
.prose a{color:#ff8ce6;text-underline-offset:3px}
.prose a:hover{color:#fff}
.prose img{max-width:100%;height:auto;border-radius:20px;margin:8px 0 18px}
.prose blockquote{
  margin:0 0 18px;
  padding:14px 18px;
  border-left:4px solid var(--b);
  border-radius:0 18px 18px 0;
  background:rgba(191,0,255,.1);
}
.prose blockquote p:last-child{margin-bottom:0}

/* ---------- footer ---------- */
.foot{
  margin-top:56px;
  padding:60px 18px 40px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(101,20,255,.22),rgba(17,13,26,.96) 46%);
}

.cta{
  max-width:1120px;
  margin:0 auto 48px;
}
.cta h2{
  margin:0 0 16px;
  font-size:clamp(1.9rem,6vw,3.1rem);
  line-height:1.1;
}

.cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:34px;
  max-width:1120px;
  margin:0 auto 34px;
}
.cols dl{margin:0;min-width:0}
.cols dt{
  margin:0 0 10px;
  font-size:.78rem;
  letter-spacing:.16em;
  color:#d5b4ff;
}
.cols dt a{
  font-size:1rem;
  letter-spacing:normal;
  color:#f4ecff;
}
.cols dd{margin:0;overflow-wrap:anywhere}
.cols a{
  display:block;
  padding:10px 0;
  min-height:44px;
  color:#efe7ff;
  text-decoration:none;
  line-height:1.45;
  transition:color .2s ease,transform .2s ease;
}
.cols a:hover{color:#ff7ae0;transform:translateX(3px)}

.copy{
  max-width:1120px;
  margin:0 auto;
  font-size:.9rem;
  color:#b6a9d4;
  overflow-wrap:anywhere;
}

/* ---------- dock ---------- */
.dock{
  position:fixed;
  left:0;
  right:0;
  bottom:0;
  z-index:100;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 14px max(10px,env(safe-area-inset-bottom));
  background:rgba(20,16,31,.94);
  border-top:1px solid var(--line);
  backdrop-filter:blur(14px);
}
.dock .brand{
  flex:0 0 auto;
  max-width:40vw;
  padding:12px 6px;
  font-weight:700;
  font-size:1rem;
  color:#fff;
  text-decoration:none;
  letter-spacing:-.01em;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.search{flex:1 1 auto;min-width:0}
.search input{
  width:100%;
  min-width:0;
  height:44px;
  padding:0 16px;
  font:inherit;
  font-size:16px;
  color:#fff;
  border:1px solid rgba(255,255,255,.2);
  border-radius:999px;
  background:rgba(255,255,255,.08);
}
.search input::placeholder{color:#c3b4e2}
.search input:focus{outline:2px solid var(--b);outline-offset:1px}

.burger{
  flex:0 0 auto;
  min-height:44px;
  padding:0 18px;
  font:inherit;
  font-weight:700;
  color:#fff;
  border:0;
  border-radius:999px;
  background:linear-gradient(100deg,var(--p),var(--b));
  cursor:pointer;
  transition:filter .2s ease,transform .2s ease;
}
.burger:hover{filter:brightness(1.16);transform:translateY(-1px)}

/* ---------- fullscreen menu ---------- */
.foot nav.is-open{
  position:fixed;
  inset:0;
  z-index:90;
  margin:0;
  padding:26px 22px 130px;
  overflow-x:hidden;
  overflow-y:auto;
  overscroll-behavior:contain;
  background:linear-gradient(160deg,rgba(28,23,38,.99),rgba(101,20,255,.34));
  backdrop-filter:blur(6px);
}
.foot nav.is-open dl{margin:0;display:grid;gap:6px;max-width:640px;margin-inline:auto}
.foot nav.is-open dt,.foot nav.is-open dd{margin:0}
.foot nav.is-open a{
  display:flex;
  align-items:center;
  min-height:56px;
  padding:10px 14px;
  font-size:clamp(1.15rem,4.2vw,1.6rem);
  font-weight:500;
  color:#fff;
  text-decoration:none;
  border:1px solid rgba(255,255,255,.14);
  border-radius:20px;
  background:rgba(255,255,255,.05);
  transition:background .2s ease,border-color .2s ease,transform .2s ease;
}
.foot nav.is-open a:hover{
  background:rgba(191,0,255,.24);
  border-color:#ff7ae0;
  transform:translateX(4px);
}

/* ---------- motion ---------- */
.rv{transition:opacity .55s ease,transform .55s ease}
html.js .rv{opacity:0;transform:translateY(26px)}
html.js .rv.in{opacity:1;transform:none}
html.js .prose > section{opacity:0;transform:translateY(26px);transition:opacity .5s ease,transform .5s ease,box-shadow .25s ease}
html.js .prose > section.in{opacity:1;transform:none}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .block{grid-template-columns:minmax(0,1fr);gap:34px;padding-top:44px}
  .toc{position:static;padding:16px 14px}
  .toc dl{
    display:flex;
    gap:8px;
    overflow-x:auto;
    overflow-y:hidden;
    padding-bottom:4px;
    scrollbar-width:thin;
    max-width:100%;
  }
  .toc dt,.toc dd{flex:0 0 auto}
  .toc a{
    border:1px solid rgba(255,255,255,.16);
    border-radius:999px;
    padding:9px 15px;
    white-space:nowrap;
    background:rgba(255,255,255,.05);
  }
  .toc a:hover{transform:none}
  .cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
}

@media (max-width:560px){
  body{font-size:16px;padding-bottom:104px}
  .hero{padding:96px 4px 112px;border-radius:0 0 28px 28px}
  .hero::before,.hero::after{width:26px}
  .collage{gap:12px;margin-top:30px}
  .prose > section{padding:24px 18px 28px;border-radius:24px;margin-bottom:34px}
  .cols{grid-template-columns:minmax(0,1fr);gap:20px}
  .foot{padding:48px 16px 32px}
  .dock{gap:8px;padding:9px 12px max(9px,env(safe-area-inset-bottom))}
  .dock .brand{font-size:.95rem;max-width:32vw}
  .burger{padding:0 14px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::before{animation:none;background-position:50% 30%}
  .rv,.prose > section,.collage .shot,.prose > section:hover{transition:none;transform:none;opacity:1}
  html.js .rv,html.js .prose > section{opacity:1;transform:none}
}

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