:root{
  --bg:#1E1E1E;
  --panel:#232323;
  --panel2:#2A2A2A;
  --text:#F5F7F7;
  --muted:rgba(245,247,247,.72);
  --muted2:rgba(245,247,247,.55);
  --accent:#00FFC4;
  --accent2:rgba(0,255,196,.28);
  --paper:#F3EFE6;
  --paper-ink:#141414;
  --ring:rgba(0,255,196,.55);
  --shadow: 0 18px 60px rgba(0,0,0,.45);
  --radius: 18px;
  --radius-lg: 28px;
  --container: 1160px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: var(--bg);
  color: var(--text);
  line-height:1.6;
  text-rendering: optimizeLegibility;
}

a{color:inherit; text-decoration:none}

.skip-link{
  position:absolute; left:-999px; top:auto; width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left:16px; top:16px; width:auto; height:auto; padding:10px 12px;
  background:var(--panel2); border:1px solid rgba(255,255,255,.14);
  border-radius:12px; z-index:9999;
}

.container{width:min(var(--container), calc(100% - 48px)); margin:0 auto;}

.site-header{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  background: rgba(30,30,30,.72);
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.header-inner{
  display:flex; align-items:center; justify-content:space-between;
  min-height:72px;
}

.brand{display:flex; align-items:center; gap:12px; font-weight:700; letter-spacing:.2px}
.brand-text{font-size:18px}
.brand-mark{
  width:10px; height:10px; border-radius:999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(0,255,196,.08), 0 0 24px rgba(0,255,196,.35);
}

.nav{display:flex; align-items:center; gap:14px}
.nav-menu{display:flex; align-items:center; gap:18px}

.nav-link{
  position:relative;
  color: rgba(245,247,247,.9);
  font-weight:600;
  font-size:14px;
  padding:10px 6px;
}
.nav-link::after{
  content:"";
  position:absolute; left:6px; right:6px; bottom:6px;
  height:1px; background: var(--accent);
  transform: scaleX(0);
  transform-origin:left;
  transition: transform .22s ease;
  opacity:.9;
}
.nav-link:hover{color:var(--accent)}
.nav-link:hover::after{transform:scaleX(1)}

.nav-cta{
  margin-left:6px;
  display:inline-flex; align-items:center; justify-content:center;
  padding:10px 14px;
  border-radius: 999px;
  background: rgba(0,255,196,.12);
  border: 1px solid rgba(0,255,196,.32);
  color: var(--text);
  font-weight:700;
  font-size:13px;
  transition: transform .15s ease, background .2s ease, border-color .2s ease;
}
.nav-cta:hover{transform: translateY(-1px); background: rgba(0,255,196,.16); border-color: rgba(0,255,196,.55)}

.nav-toggle{
  display:none;
  width:44px; height:44px;
  border-radius:12px;
  background: transparent;
  border: 1px solid rgba(255,255,255,.12);
  color: var(--text);
}
.nav-toggle span{display:block; height:2px; background:rgba(245,247,247,.85); margin:7px 10px; border-radius:999px}

.hero{
  position:relative;
  overflow:hidden;
}
.hero-bg{
  position:absolute; inset:0;
  pointer-events:none;
}
.hero-bg::before{
  /* stage lighting */
  content:"";
  position:absolute; inset:-40px;
  background:
    radial-gradient(1200px 520px at 20% 10%, rgba(255,255,255,.10), transparent 60%),
    radial-gradient(900px 520px at 70% 20%, rgba(0,255,196,.12), transparent 58%),
    radial-gradient(1200px 620px at 60% 90%, rgba(255,255,255,.08), transparent 60%);
  filter: blur(0px);
}
.hero-bg::after{
  /* film grain (paper texture hint) */
  content:"";
  position:absolute; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='220' height='220' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
  opacity:.06;
  mix-blend-mode: overlay;
  pointer-events:none;
}
.hero-svg{width:100%; height:100%; opacity:.85}

.hero-inner{
  position:relative;
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 36px;
  padding: 72px 0 56px;
  align-items:center;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color: var(--muted);
  font-weight:600;
  font-size:13px;
  letter-spacing:.12em;
  text-transform:uppercase;
  margin:0 0 14px;
}
.eyebrow::before{
  content:"";
  width:36px; height:1px; background: rgba(0,255,196,.55);
  box-shadow: 0 0 24px rgba(0,255,196,.25);
}

.hero-title{margin:0 0 14px; font-size: clamp(34px, 4.1vw, 56px); line-height:1.1; letter-spacing:-.02em}
.hero-title-en{display:block; margin-top:10px; font-weight:600; color: rgba(245,247,247,.84); font-size: clamp(16px, 1.6vw, 22px)}
.hero-subtitle{margin:0 0 22px; color: var(--muted); font-size: 16px; max-width: 64ch}

.hero-actions{display:flex; gap:12px; flex-wrap:wrap; align-items:center}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
  padding: 12px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.04);
  color: var(--text);
  font-weight:700;
  transition: transform .15s ease, border-color .2s ease, background .2s ease, box-shadow .2s ease;
}
.btn:focus-visible{outline:none; box-shadow: 0 0 0 4px rgba(0,255,196,.18), 0 0 0 1px var(--ring) inset}

.btn-primary{
  background: linear-gradient(180deg, rgba(0,255,196,.95), rgba(0,255,196,.78));
  border-color: rgba(0,255,196,.55);
  color: #0b1f18;
  box-shadow: 0 16px 36px rgba(0,255,196,.12);
}
.btn-primary:hover{transform: translateY(-1px); box-shadow: 0 18px 46px rgba(0,255,196,.18)}
.btn-ghost:hover{border-color: rgba(0,255,196,.35); background: rgba(0,255,196,.06)}
.btn-arrow{font-weight:800}

.trust-row{margin-top:18px; display:flex; gap:10px; flex-wrap:wrap}
.pill{
  font-size:12px;
  color: rgba(245,247,247,.85);
  border:1px solid rgba(255,255,255,.12);
  background: rgba(255,255,255,.03);
  padding: 6px 10px;
  border-radius: 999px;
}

.beta-note{margin:14px 0 0; color: var(--muted2); font-size: 13px}

.hero-paper{
  display:flex;
  justify-content:flex-end;
}
.paper-card{
  width:min(420px, 100%);
  background: linear-gradient(180deg, rgba(243,239,230,.98), rgba(243,239,230,.92));
  color: var(--paper-ink);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border: 1px solid rgba(0,0,0,.12);
  position:relative;
  overflow:hidden;
}
.paper-card::before{
  content:"";
  position:absolute; inset:-80px;
  background:
    radial-gradient(420px 260px at 20% 10%, rgba(0,0,0,.07), transparent 60%),
    radial-gradient(540px 320px at 100% 20%, rgba(0,255,196,.12), transparent 58%),
    radial-gradient(360px 260px at 60% 110%, rgba(0,0,0,.05), transparent 60%);
  opacity:.9;
}
.paper-card::after{
  content:"";
  position:absolute; inset:0;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)' opacity='.28'/%3E%3C/svg%3E");
  opacity:.10;
  mix-blend-mode:multiply;
}
.paper-top{position:relative; display:flex; gap:10px; padding:16px 18px 8px}
.paper-chip{
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  background: rgba(0,0,0,.06);
  border: 1px solid rgba(0,0,0,.10);
  padding: 6px 10px;
  border-radius: 999px;
}
.paper-chip.ghost{opacity:.7}

.paper-staff{position:relative; padding: 10px 18px 0}
.staff-lines{display:grid; gap:10px; padding: 8px 0 14px}
.staff-lines span{display:block; height:1px; background: rgba(0,0,0,.18)}
.staff-notes{position:absolute; inset:0; pointer-events:none}
.note{
  position:absolute; width:14px; height:14px; border-radius:999px;
  border: 2px solid rgba(0,0,0,.55);
  background: rgba(0,0,0,.05);
}
.note::after{
  content:"";
  position:absolute; right:-4px; top:-12px;
  width:2px; height:18px; background: rgba(0,0,0,.55);
}
.note.n1{left:42px; top:28px}
.note.n2{left:120px; top:54px}
.note.n3{left:210px; top:36px}
.note.n4{left:300px; top:64px; border-color: rgba(0,255,196,.9)}

.paper-code{position:relative; padding: 12px 18px 0}
.code-line{height:10px; border-radius:999px; background: rgba(0,0,0,.10); margin:10px 0}
.code-line.short{width:70%}
.code-line.med{width:84%; background: rgba(0,255,196,.25)}
.paper-caption{position:relative; margin: 6px 0 0; padding: 12px 18px 18px; color: rgba(0,0,0,.78); font-size: 14px}
.paper-caption strong{color: rgba(0,0,0,.92)}

.section{padding: 64px 0}
.section-head{margin-bottom: 22px}
.section-title{margin:0 0 8px; font-size: 28px; letter-spacing:-.01em}
.section-desc{margin:0; color: var(--muted); max-width: 86ch}

.grid{display:grid; gap:16px}
.cards{grid-template-columns: repeat(3, 1fr)}

.card{
  background: linear-gradient(180deg, rgba(42,42,42,.98), rgba(35,35,35,.98));
  border-radius: var(--radius);
  border:1px solid rgba(255,255,255,.10);
  box-shadow: 0 18px 50px rgba(0,0,0,.22);
  padding: 22px;
  transition: border-color .18s ease, transform .18s ease, box-shadow .18s ease;
  min-height: 190px;
}
.card:hover{
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 24px 70px rgba(0,0,0,.34);
}
.card:focus-within{
  box-shadow: 0 0 0 4px rgba(0,255,196,.14), 0 18px 50px rgba(0,0,0,.22);
  border-color: rgba(0,255,196,.75);
}

.card-kicker{
  margin:0 0 10px;
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color: rgba(0,255,196,.82);
}
.card-title{margin:0 0 10px; font-size:18px; letter-spacing:-.01em}
.card-body{margin:0; color: var(--muted); font-size: 14.5px}

.accent{color: var(--accent); font-weight:700}

.vision-panel{
  margin-top: 18px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,.10);
  background: linear-gradient(180deg, rgba(35,35,35,.92), rgba(30,30,30,.92));
  box-shadow: 0 18px 55px rgba(0,0,0,.22);
  overflow:hidden;
}
.vision-item{
  display:flex;
  gap:14px;
  padding: 18px 18px;
  border-top: 1px solid rgba(255,255,255,.08);
}
.vision-item:first-child{border-top:none}
.vision-item h3{
  margin:0;
  min-width: 90px;
  color: rgba(245,247,247,.92);
  letter-spacing:.04em;
}
.vision-item p{margin:0; color: var(--muted)}

.site-footer{
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 44px 0 28px;
  background: rgba(30,30,30,.96);
}
.footer-inner{display:grid; gap:22px}
.footer-brand .brand-row{display:flex; align-items:center; gap:12px; font-weight:800}
.footer-muted{color: var(--muted2)}

.footer-cols{
  display:grid;
  grid-template-columns: 1.2fr 1.2fr 1fr;
  gap: 18px;
}
.footer-col h4{margin:0 0 8px; font-size: 13px; letter-spacing:.12em; text-transform:uppercase; color: rgba(245,247,247,.86)}
.footer-col p{margin:0; color: rgba(245,247,247,.82)}
.footer-link{color: var(--accent)}
.footer-link:hover{text-decoration: underline}

.footer-bottom{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap: 16px;
  padding-top: 14px;
  border-top: 1px solid rgba(255,255,255,.08);
  color: var(--muted2);
  font-size: 13px;
}
.to-top{color: rgba(245,247,247,.78)}
.to-top:hover{color: var(--accent)}

/* Responsive */
@media (max-width: 980px){
  .hero-inner{grid-template-columns: 1fr; padding: 54px 0 42px}
  .hero-paper{justify-content:flex-start}
  .cards{grid-template-columns: 1fr;}
  .footer-cols{grid-template-columns: 1fr;}
}

@media (max-width: 860px){
  .nav-toggle{display:inline-flex; align-items:center; justify-content:center}
  .nav-menu{
    position:absolute;
    right:24px;
    top:72px;
    width:min(320px, calc(100vw - 48px));
    padding: 12px;
    border-radius: 16px;
    background: rgba(35,35,35,.96);
    border: 1px solid rgba(255,255,255,.12);
    box-shadow: 0 24px 70px rgba(0,0,0,.38);
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap: 8px;
  }
  .nav-menu.is-open{display:flex}
  .nav-link{padding: 10px 10px}
  .nav-link::after{left:10px; right:10px}
  .nav-cta{margin-left:0; justify-content:center}
}

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