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

:root{
  --red:#ff0000;
  --violet:#8b00ff;
  --ink:#261717;
  --deep:#120b0b;
  --glass:rgba(255,255,255,.09);
  --glass-strong:rgba(255,255,255,.15);
  --line:rgba(255,255,255,.2);
  --txt:#f6ecec;
  --dim:#cbb8b8;
  --r:28px;
  --pad:clamp(16px,4vw,48px);
}

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

html{
  background:var(--deep);
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  color:var(--txt);
  font-family:'Space Mono',ui-monospace,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  overflow-x:hidden;
}

img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{
  font-family:'Syncopate','Space Mono',"PingFang SC",sans-serif;
  line-height:1.3;
  letter-spacing:.04em;
}

.orbs{
  position:fixed;
  inset:-12vh 0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(40vw 40vw at 14% 12%,rgba(255,0,0,.42),transparent 66%),
    radial-gradient(46vw 46vw at 86% 26%,rgba(139,0,255,.40),transparent 68%),
    radial-gradient(52vw 40vw at 52% 96%,rgba(255,0,0,.16),transparent 72%);
  transition:transform .2s linear;
  will-change:transform;
}

.topbar{
  position:sticky;
  top:0;
  z-index:60;
  display:flex;
  align-items:center;
  gap:12px;
  padding:10px var(--pad);
  background:rgba(38,23,23,.5);
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  min-height:44px;
  text-decoration:none;
  color:#fff;
  font-family:'Syncopate',sans-serif;
  font-size:17px;
  letter-spacing:.14em;
  white-space:nowrap;
}

.mark-img{width:30px;height:30px;object-fit:contain}

.burger{
  margin-left:auto;
  position:relative;
  z-index:80;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:var(--glass-strong);
  color:#fff;
  font:inherit;
  font-size:16px;
  letter-spacing:.12em;
  cursor:pointer;
  -webkit-backdrop-filter:blur(15px);
  backdrop-filter:blur(15px);
  transition:background .25s,transform .25s;
}
.burger:hover{background:rgba(255,255,255,.24);transform:translateY(-1px)}
.burger .on{display:none}
body.menu-open .burger .on{display:inline}
body.menu-open .burger .off{display:none}

.cta{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 20px;
  border-radius:999px;
  text-decoration:none;
  color:#fff;
  font-size:16px;
  white-space:nowrap;
  border:1px solid rgba(255,0,0,.6);
  background:linear-gradient(120deg,rgba(255,0,0,.35),rgba(139,0,255,.35));
  -webkit-backdrop-filter:blur(15px);
  backdrop-filter:blur(15px);
  transition:transform .25s,box-shadow .25s,border-color .25s;
}
.cta:hover{
  transform:translateY(-2px);
  border-color:rgba(255,0,0,.9);
  box-shadow:0 10px 26px rgba(255,0,0,.32);
}

.menu{
  position:fixed;
  inset:0;
  z-index:50;
  display:grid;
  place-items:center;
  padding:88px var(--pad) 40px;
  overflow-y:auto;
  background:rgba(16,10,10,.78);
  -webkit-backdrop-filter:blur(20px);
  backdrop-filter:blur(20px);
  opacity:0;
  visibility:hidden;
  transition:opacity .32s ease,visibility .32s ease;
}
body.menu-open .menu{opacity:1;visibility:visible}

.menu ol{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:4px;
  justify-items:center;
}

.menu a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:52px;
  padding:8px 22px;
  border-radius:999px;
  text-decoration:none;
  color:#fff;
  font-family:'Syncopate',sans-serif;
  font-size:clamp(17px,3.4vw,27px);
  letter-spacing:.05em;
  transition:background .22s,color .22s;
}
.menu a:hover{background:rgba(255,255,255,.13)}

.hero{
  max-width:1180px;
  margin:0 auto;
  padding:clamp(22px,5vw,64px) var(--pad);
  display:grid;
  grid-template-columns:1.05fr .95fr;
  align-items:center;
  gap:clamp(18px,4vw,52px);
  min-height:70vh;
}

.hero-text{text-align:center}
.hero h1{
  margin:0 0 16px;
  font-size:clamp(27px,4.2vw,50px);
  color:#fff;
}
.lead{margin:0 auto;max-width:34em;color:var(--dim)}

.hero-media{
  position:relative;
  overflow:hidden;
  aspect-ratio:4/3;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(15px);
  backdrop-filter:blur(15px);
  box-shadow:0 26px 60px rgba(0,0,0,.5);
}
.hero-media img{width:100%;height:100%;object-fit:cover}
.hero-media::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(160deg,rgba(255,0,0,.20),transparent 46%,rgba(139,0,255,.22));
  pointer-events:none;
}

main{padding-bottom:8px}

.sheet{
  max-width:1180px;
  margin:0 auto;
  padding:0 var(--pad) clamp(40px,7vw,80px);
  display:grid;
  grid-template-columns:220px minmax(0,1fr);
  gap:clamp(16px,3vw,36px);
  align-items:start;
}
.sheet > *{min-width:0}
.sheet > *:not(.rail){grid-column:2}

.rail{
  grid-column:1;
  position:sticky;
  top:84px;
  padding:20px 16px;
  border-radius:var(--r);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(15px);
  backdrop-filter:blur(15px);
}
.rail h2{
  margin:0 0 4px;
  font-size:16px;
  letter-spacing:.26em;
  color:#fff;
}
.rail .subtitle{
  margin:0 0 14px;
  font-size:16px;
  color:var(--dim);
}
.rail nav ol{list-style:none;margin:0;padding:0}
.rail nav a{
  display:block;
  min-height:40px;
  padding:9px 0;
  text-decoration:none;
  color:var(--dim);
  font-size:16px;
  border-bottom:1px solid rgba(255,255,255,.1);
  transition:color .22s,padding-left .22s;
}
.rail nav a:hover{color:#fff;padding-left:6px}
.rail nav li:last-child a{border-bottom:0}

.sheet > section{
  position:relative;
  overflow:hidden;
  margin-bottom:26px;
  padding:clamp(18px,3vw,32px);
  border-radius:var(--r);
  border:1px solid var(--line);
  background:var(--glass);
  -webkit-backdrop-filter:blur(15px);
  backdrop-filter:blur(15px);
  scroll-margin-top:92px;
  transition:transform .3s,border-color .3s,background .3s;
}
.sheet > section::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:3px;
  background:linear-gradient(90deg,var(--red),var(--violet));
}
.sheet > section:hover{
  transform:translateY(-3px);
  border-color:rgba(255,255,255,.34);
  background:rgba(255,255,255,.12);
}

.sheet > section h2{
  margin:0 0 12px;
  font-size:clamp(20px,2.6vw,26px);
  color:#fff;
}
.sheet > section h2 + p.subtitle,
.sheet > section .subtitle{
  margin:0 0 16px;
  color:var(--dim);
}
.sheet > section p{margin:0 0 14px;color:#efe3e3}
.sheet > section p:last-child{margin-bottom:0}
.sheet > section ul,.sheet > section ol{padding-left:1.25em;margin:0 0 14px}
.sheet > section li{margin:0 0 8px}
.sheet > section a{color:#ff9090;text-decoration-color:rgba(255,144,144,.45)}
.sheet > section a:hover{color:#fff}
.sheet > section strong{color:#fff}

footer{
  border-top:1px solid var(--line);
  background:rgba(18,11,11,.55);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}

.foot-row{
  max-width:1180px;
  margin:0 auto;
  padding:24px var(--pad);
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:14px 22px;
}

.foot-brand{
  font-family:'Syncopate',sans-serif;
  font-size:clamp(19px,3.2vw,34px);
  letter-spacing:.1em;
  color:rgba(255,255,255,.92);
  white-space:nowrap;
}

footer nav{justify-self:center}
footer nav ol{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  gap:2px 14px;
  justify-content:center;
}
footer nav a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  text-decoration:none;
  color:var(--dim);
  font-size:16px;
  transition:color .22s;
}
footer nav a:hover{color:#fff}

.copy{
  margin:0;
  justify-self:end;
  color:var(--dim);
  font-size:16px;
  white-space:nowrap;
}

@media (max-width:900px){
  .hero{
    grid-template-columns:1fr;
    min-height:0;
    padding-top:clamp(18px,5vw,34px);
    padding-bottom:clamp(18px,5vw,34px);
  }
  .hero-text{order:1}
  .hero-media{order:2;aspect-ratio:16/10}

  .sheet{grid-template-columns:minmax(0,1fr)}
  .sheet > *:not(.rail){grid-column:1}
  .rail{grid-column:1;position:static}

  .foot-row{grid-template-columns:minmax(0,1fr);justify-items:center;text-align:center}
  .copy{justify-self:center}
}

@media (max-width:480px){
  .brand{font-size:16px;letter-spacing:.08em}
  .cta{padding:0 14px}
  .sheet > section{border-radius:22px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none!important;animation:none!important}
  .orbs{transition:none}
}

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