:root {
  --bg: #070907;
  --panel: #0d120d;
  --green: #77ef16;
  --green-soft: #b2ff73;
  --gold: #b68a3c;
  --white: #f3f5ed;
  --muted: #9da896;
  --line: rgba(119, 239, 22, .36);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", system-ui, sans-serif;
  color: var(--white);
  background: var(--bg);
  scroll-behavior: smooth;
}

* { box-sizing: border-box; }
body { margin: 0; background: radial-gradient(circle at 75% 5%, #12200d 0, var(--bg) 38rem); }
a { color: inherit; }
.site-header { position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: 1rem clamp(1.2rem, 4vw, 4rem); border-bottom: 1px solid var(--line); background: rgba(7,9,7,.9); backdrop-filter: blur(12px); }
.brand { font-family: ui-monospace, monospace; font-weight: 900; letter-spacing: .1em; text-decoration: none; }
.brand span { color: var(--green); }
nav { display: flex; gap: 1.5rem; }
nav a { color: var(--muted); font-size: .82rem; text-decoration: none; }
nav a:hover { color: var(--green-soft); }

.hero { min-height: 86vh; position: relative; display: grid; grid-template-columns: minmax(20rem,.85fr) minmax(28rem,1.15fr); align-items: center; gap: clamp(2rem,4vw,5rem); padding: clamp(3rem,7vw,7rem) clamp(1.2rem,5vw,6rem); overflow: hidden; border-bottom: 1px solid var(--line); }
.hero::before { content: ""; position: absolute; inset: 2rem; border: 1px solid var(--line); clip-path: polygon(0 0, 38% 0, 40% 1px, 60% 1px, 62% 0, 100% 0, 100% 100%, 62% 100%, 60% calc(100% - 1px), 40% calc(100% - 1px), 38% 100%, 0 100%); pointer-events: none; }
.scanlines { position: absolute; inset: 0; pointer-events: none; opacity: .12; background: repeating-linear-gradient(0deg, transparent 0 3px, var(--green) 4px); }
.hero-copy { position: relative; z-index: 2; }
.eyebrow, .section-number { color: var(--green); font: 700 .78rem/1.2 ui-monospace, monospace; letter-spacing: .14em; }
h1 { margin: 1.1rem 0; font-size: clamp(3rem,7vw,7.5rem); line-height: .92; letter-spacing: -.08em; }
h1 span { display: block; margin-bottom: .75rem; color: var(--green); font-size: .22em; letter-spacing: .2em; }
.lead { max-width: 42rem; font-size: clamp(1.05rem,2vw,1.45rem); line-height: 1.9; }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button { display: inline-block; padding: .85rem 1.1rem; border: 1px solid var(--green); color: var(--green-soft); font: 700 .9rem ui-monospace, monospace; text-decoration: none; }
.button.primary { background: var(--green); color: #061006; }
.button:hover { box-shadow: 0 0 24px rgba(119,239,22,.28); }
.hero-visual { position: relative; z-index: 1; margin: 0; filter: drop-shadow(0 0 30px rgba(88,210,19,.18)); }
.hero-visual img { display: block; width: 100%; max-height: 72vh; object-fit: contain; }

.section { max-width: 1200px; margin: auto; padding: clamp(5rem,10vw,9rem) clamp(1.2rem,4vw,3rem); border-bottom: 1px solid rgba(119,239,22,.16); }
.section h2 { margin: .8rem 0 2rem; font-size: clamp(2rem,5vw,4.4rem); line-height: 1.15; letter-spacing: -.05em; }
.intro { display: grid; grid-template-columns: .42fr 1fr; gap: 3rem; }
.intro > div { max-width: 48rem; }
.intro p:not(.section-number), .event > p:not(.section-number) { color: #c5cbbf; font-size: 1.08rem; line-height: 2; }
.steps ol { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; padding: 1px; list-style: none; background: var(--line); }
.howto-pop { width: min(100%, 44rem); margin: 0 auto clamp(3rem,6vw,5rem); }
.howto-pop img { display: block; width: 100%; height: auto; border: 1px solid var(--line); box-shadow: 0 0 36px rgba(119,239,22,.14); }
.steps li { min-height: 15rem; padding: 1.5rem; background: var(--panel); }
.steps li > span { display: block; color: var(--green); font: 700 .82rem ui-monospace, monospace; }
.steps strong { display: block; margin: 3rem 0 .8rem; font-size: 1.65rem; }
.steps li p { color: var(--muted); line-height: 1.7; }
.tech { display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; }
.tech ul { margin: 0; padding: 0; list-style: none; }
.tech li { display: grid; grid-template-columns: 9rem 1fr; gap: 1rem; padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
.tech b { color: var(--green); font: 700 .84rem ui-monospace, monospace; }
.tech span { color: #c5cbbf; }
.status { margin-top: 3rem; font: 700 .9rem ui-monospace, monospace; }
.status i { display: inline-block; width: .7rem; height: .7rem; margin-right: .6rem; border-radius: 50%; background: var(--green); box-shadow: 0 0 18px var(--green); }
.event-details { display: grid; grid-template-columns: 1fr auto; gap: 3rem; align-items: end; }
.event dl { margin: 0; border-top: 1px solid var(--line); }
.event dl > div { display: grid; grid-template-columns: 8rem 1fr; gap: 1rem; padding: 1rem 0; border-bottom: 1px solid var(--line); }
.event dt { color: var(--green); font: 700 .82rem ui-monospace, monospace; }
.event dd { margin: 0; color: #d6dbd0; }
.event-links { display: grid; gap: .8rem; min-width: 15rem; }
.contact-grid { display: grid; grid-template-columns: 1fr auto; gap: 1rem; align-items: stretch; }
.contact-links { display: grid; grid-template-columns: 1fr; gap: 1rem; }
.contact-links a { padding: 1.6rem; border: 1px solid var(--line); font-family: ui-monospace, monospace; text-decoration: none; overflow-wrap: anywhere; }
.contact-links a:hover { border-color: var(--green); background: rgba(119,239,22,.05); }
.contact-links small { display: block; margin-bottom: .7rem; color: var(--green); }
.qr { display: grid; grid-template-columns: 9rem minmax(10rem,auto); align-items: center; gap: 1.2rem; padding: 1rem; border: 1px solid var(--green); color: var(--white); font: 700 .9rem ui-monospace, monospace; text-decoration: none; }
.qr img { display: block; width: 9rem; height: 9rem; background: #f2f7ea; image-rendering: pixelated; }
.qr small { display: block; margin-bottom: .7rem; color: var(--green); }
footer { display: flex; justify-content: space-between; gap: 2rem; padding: 2rem clamp(1.2rem,4vw,4rem); color: var(--muted); font: .75rem ui-monospace, monospace; }

@media (max-width: 800px) {
  nav { display: none; }
  .hero { min-height: auto; grid-template-columns: 1fr; padding-top: 5rem; }
  .hero-visual { grid-row: 1; margin: 0; }
  .hero-visual img { max-height: 52vh; }
  .intro, .tech { grid-template-columns: 1fr; gap: 1rem; }
  .steps ol { grid-template-columns: 1fr 1fr; }
  .contact-links { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .event-details { grid-template-columns: 1fr; align-items: stretch; }
  .event dl > div { grid-template-columns: 6rem 1fr; }
  .event-links { min-width: 0; }
  .qr { grid-template-columns: 7rem 1fr; }
  .qr img { width: 7rem; height: 7rem; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) { :root { scroll-behavior: auto; } }