:root{
  --bg0:#07080c;
  --bg1:#0b0c12;
  --bg2:#101225;

  --text:rgba(255,255,255,.92);
  --muted:rgba(255,255,255,.70);
  --muted2:rgba(255,255,255,.55);

  --line:rgba(255,255,255,.14);
  --line2:rgba(255,255,255,.10);

  --card:rgba(255,255,255,.06);
  --glass:rgba(255,255,255,.08);

  --shadow: 0 18px 60px rgba(0,0,0,.42);
  --shadow2: 0 10px 30px rgba(0,0,0,.35);

  --r12:12px;
  --r16:16px;
  --r20:20px;

  --max: 1160px;

  --accent: #7c5cff;    /* purple */
  --accent2:#21d4fd;    /* cyan */
  --accent3:#ff2bd6;    /* magenta */
}

*{ box-sizing:border-box; }
html,body{ margin:0; padding:0; }
html{ scroll-behavior:smooth; }
body{
  font-family: Inter, "Noto Sans JP", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color:var(--text);
  background:
    radial-gradient(800px 520px at 18% -10%, rgba(124,92,255,.22), transparent 60%),
    radial-gradient(900px 620px at 110% 0%, rgba(33,212,253,.16), transparent 58%),
    radial-gradient(1000px 720px at 60% 120%, rgba(255,43,214,.10), transparent 58%),
    linear-gradient(180deg, var(--bg0), var(--bg1) 45%, var(--bg2));
  line-height:1.7;
}

a{ color:inherit; text-underline-offset:4px; }
a:hover{ opacity:.92; }

.wrap{
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

.skip{
  position:absolute;
  left:-9999px;
  top:auto;
  width:1px;height:1px;
  overflow:hidden;
}
.skip:focus{
  left:20px; top:16px;
  width:auto; height:auto;
  padding:10px 12px;
  border-radius: 10px;
  background:#fff;
  color:#000;
  z-index:9999;
}

.muted{ color: var(--muted); }
.note{ color: var(--muted2); font-size:12px; margin:12px 0 0; }

/* Header */
.header{
  position: sticky;
  top:0;
  z-index:50;
  background: rgba(9,10,15,.45);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
}
.header.is-elevated{
  border-bottom-color: var(--line);
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}
.header__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding: 14px 0;
}
.brand{
  display:inline-flex;
  align-items:baseline;
  gap:10px;
  text-decoration:none;
  letter-spacing:.02em;
}
.brand__name{
  font-weight:700;
  font-size: 16px;
}
.brand__sub{
  font-weight:600;
  font-size: 13px;
  color: var(--muted);
}

.nav{
  display:flex;
  align-items:center;
  gap: 12px;
}
.nav a{
  text-decoration:none;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 10px;
}
.nav a:hover{
  color: var(--text);
  background: rgba(255,255,255,.06);
}

.lang{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width: 40px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--line2);
  background: rgba(255,255,255,.03);
  color: var(--muted);
  text-decoration:none;
}
.lang:hover{
  background: rgba(255,255,255,.08);
  color: var(--text);
}

.burger{
  display:none;
  width:44px;height:44px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
}
.burger span{
  display:block;
  width:18px;
  height:2px;
  background: var(--text);
  margin: 4px auto;
  border-radius: 2px;
}
.mnav{
  border-top: 1px solid var(--line);
  background: rgba(9,10,15,.78);
}
.mnav__inner{
  display:grid;
  gap:10px;
  padding: 14px 0 18px;
}
.mnav a{
  text-decoration:none;
  color: var(--muted);
  padding: 12px 12px;
  border-radius: 14px;
  border: 1px solid var(--line2);
  background: rgba(255,255,255,.03);
}

/* Buttons */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding: 12px 16px;
  border-radius: 999px;
  text-decoration:none;
  font-weight: 650;
  border: 1px solid var(--line2);
  background: rgba(255,255,255,.03);
  color: var(--text);
  box-shadow: var(--shadow2);
}
.btn:hover{ filter: brightness(1.02); }
.btn--sm{
  padding: 9px 12px;
  font-size: 13px;
  box-shadow:none;
}
.btn--ghost{
  background: transparent;
  border-color: var(--line);
}
.btn--primary{
  border-color: rgba(124,92,255,.45);
  background:
    linear-gradient(135deg, rgba(124,92,255,.92), rgba(33,212,253,.72));
  color:#0b0c12;
}

/* Hero */
.hero{
  position: relative;
  overflow:hidden;
  padding: 56px 0 0;
}
.hero__inner{
  display:grid;
  grid-template-columns: 1.25fr .95fr;
  gap: 22px;
  align-items: start;
  padding-bottom: 26px;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-size: 12px;
  color: var(--muted);
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line2);
  background: rgba(255,255,255,.03);
}
.h1{
  margin: 10px 0 10px;
  font-size: clamp(28px, 3.4vw, 44px);
  line-height:1.12;
  letter-spacing: -0.02em;
}
.lead{
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  max-width: 56ch;
}
.hero__cta{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin: 10px 0 16px;
}
.chips{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}
.chip{
  font-size: 12px;
  color: var(--muted);
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--line2);
  background: rgba(255,255,255,.03);
}

.hero__panel{
  position: relative;
}
.panel{
  border-radius: var(--r20);
  background:
    linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.04));
  border: 1px solid var(--line2);
  box-shadow: var(--shadow);
  padding: 18px;
  position: relative;
  overflow:hidden;
}
.panel::before{
  content:"";
  position:absolute;
  inset:-2px;
  background:
    radial-gradient(420px 260px at 30% 10%, rgba(124,92,255,.30), transparent 60%),
    radial-gradient(420px 260px at 95% 50%, rgba(33,212,253,.20), transparent 60%),
    radial-gradient(420px 260px at 40% 120%, rgba(255,43,214,.12), transparent 60%);
  opacity:.65;
  pointer-events:none;
  filter: blur(6px);
}
.panel > *{ position: relative; }

.panel__title{
  font-weight: 700;
  letter-spacing:.02em;
  margin-bottom: 10px;
}

.panel__actions{
  display:flex;
  gap:10px;
  flex-wrap:wrap;
  margin-top: 12px;
}

/* Decorative orbs */
.hero__art{ position:absolute; inset:0; pointer-events:none; }
.orb{
  position:absolute;
  width: 280px;
  height: 280px;
  border-radius: 999px;
  filter: blur(28px);
  opacity: .55;
  mix-blend-mode: screen;
  animation: float 10s ease-in-out infinite;
}
.orb--a{ left:-40px; top:-30px; background: rgba(124,92,255,.55); animation-duration: 12s; }
.orb--b{ right:-60px; top: 60px; background: rgba(33,212,253,.45); animation-duration: 14s; }
.orb--c{ left: 70px; bottom:-90px; background: rgba(255,43,214,.25); animation-duration: 16s; }

@keyframes float{
  0%,100%{ transform: translate3d(0,0,0); }
  50%{ transform: translate3d(0,-14px,0); }
}

.marquee{
  border-top: 1px solid var(--line2);
  border-bottom: 1px solid var(--line2);
  background: rgba(255,255,255,.02);
  overflow:hidden;
}
.marquee__track{
  display:inline-flex;
  gap: 14px;
  padding: 12px 0;
  white-space:nowrap;
  color: rgba(255,255,255,.62);
  letter-spacing: .14em;
  font-size: 12px;
  animation: marquee 22s linear infinite;
}
@keyframes marquee{
  from{ transform: translateX(0); }
  to{ transform: translateX(-50%); }
}

/* Sections */
.section{
  padding: 64px 0;
}
.section--alt{
  background: rgba(255,255,255,.02);
  border-top: 1px solid var(--line2);
  border-bottom: 1px solid var(--line2);
}
.section__head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom: 18px;
}
.h2{
  margin: 0;
  font-size: 20px;
  letter-spacing: .01em;
}
.sub{
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
  font-size: 13px;
}
.h3{
  margin: 0 0 10px;
  font-size: 16px;
}
.h4{
  margin: 14px 0 10px;
  font-size: 14px;
  color: var(--text);
}

/* Grids */
.grid{
  display:grid;
  gap: 14px;
}
.grid--2{ grid-template-columns: repeat(2, 1fr); }
.grid--3{ grid-template-columns: repeat(3, 1fr); }

/* Cards */
.card{
  border-radius: var(--r20);
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line2);
  padding: 16px;
  box-shadow: var(--shadow2);
  position: relative;
  overflow:hidden;
}
.card::before{
  content:"";
  position:absolute;
  inset:0;
  background:
    radial-gradient(380px 220px at 20% 10%, rgba(124,92,255,.10), transparent 55%),
    radial-gradient(380px 220px at 95% 40%, rgba(33,212,253,.08), transparent 55%);
  opacity:.8;
  pointer-events:none;
}
.card > *{ position: relative; }

.card__icon{
  width: 40px;
  height: 40px;
  border-radius: 14px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight: 700;
  margin-bottom: 10px;
  border: 1px solid var(--line2);
  background: rgba(255,255,255,.03);
  color: rgba(255,255,255,.84);
}
.card__foot{ margin-top: 10px; }

.list{
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}
.link{
  color: rgba(255,255,255,.90);
  text-decoration: underline;
  text-underline-offset: 5px;
}
.link:hover{ opacity:.92; }

/* KV blocks */
.kv{
  margin: 0;
}
.kv__row{
  display:grid;
  grid-template-columns: 110px 1fr;
  gap: 8px 12px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(255,255,255,.14);
}
.kv__row dt{ color: var(--muted2); font-size: 13px; }
.kv__row dd{ margin:0; color: var(--muted); }

.mini{
  margin-top: 10px;
  display:grid;
  gap: 6px;
  color: var(--muted);
}
.mini div{
  display:grid;
  grid-template-columns: 70px 1fr;
  gap: 10px;
}
.mini dt{ color: var(--muted2); }
.mini dd{ margin:0; }

/* Timeline */
.timeline{
  margin: 0;
  padding: 0;
  list-style:none;
  display:grid;
  gap: 10px;
}
.timeline li{
  display:grid;
  grid-template-columns: 90px 1fr;
  gap: 10px;
  padding: 12px 14px;
  border-radius: var(--r16);
  border: 1px solid var(--line2);
  background: rgba(255,255,255,.03);
}
.t__y{ color: var(--muted2); font-size: 13px; }
.t__b{ color: var(--muted); }

/* Form */
.form .field{
  display:block;
  margin: 10px 0;
}
.form .field span{
  display:block;
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 6px;
}
input, textarea{
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--line2);
  background: rgba(0,0,0,.22);
  color: var(--text);
  padding: 12px 12px;
  font-size: 14px;
  outline: none;
}
input:focus, textarea:focus{
  border-color: rgba(33,212,253,.55);
  box-shadow: 0 0 0 4px rgba(33,212,253,.12);
}
textarea{ resize: vertical; }

.divider{
  height: 1px;
  background: var(--line2);
  margin: 12px 0;
}

/* Callout */
.callout{
  margin-top: 12px;
  border-radius: var(--r16);
  border: 1px solid rgba(124,92,255,.28);
  background: rgba(124,92,255,.08);
  padding: 12px 12px;
}
.callout__title{
  font-weight:700;
  margin-bottom: 6px;
}
.callout__body{
  color: var(--muted);
  font-size: 13px;
}

/* Footer */
.footer{
  border-top: 1px solid var(--line2);
  padding: 22px 0;
  background: rgba(0,0,0,.10);
}
.footer__inner{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 12px;
}
.footer__brand{
  font-weight: 700;
  margin-bottom: 6px;
}
.footer__links{
  display:flex;
  gap: 10px;
  flex-wrap: wrap;
}
.footer__links a{
  color: var(--muted);
  text-decoration:none;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--line2);
  background: rgba(255,255,255,.03);
}
.footer__links a:hover{ color: var(--text); }

/* Floating action button */
.fab{
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 60;
  padding: 12px 14px;
  border-radius: 999px;
  text-decoration:none;
  font-weight: 700;
  color: #0b0c12;
  background: linear-gradient(135deg, rgba(124,92,255,.95), rgba(255,43,214,.70));
  box-shadow: 0 18px 60px rgba(0,0,0,.5);
  border: 1px solid rgba(255,255,255,.14);
}
@media (min-width: 980px){
  .fab{ display:none; }
}

/* Responsive */
@media (max-width: 980px){
  .hero__inner{ grid-template-columns: 1fr; }
  .grid--3{ grid-template-columns: 1fr; }
  .grid--2{ grid-template-columns: 1fr; }
  .section__head{ flex-direction: column; align-items: flex-start; }

  .nav{ display:none; }
  .burger{ display:block; }
  .footer__inner{ flex-direction: column; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  .marquee__track{ animation: none; }
  .orb{ animation: none; }
}