:root {
  color-scheme: dark;
  --bg: #11101b;
  --surface: #1d1b2c;
  --surface-2: #29253d;
  --line: #47415f;
  --ink: #fff8f2;
  --muted: #cec2d0;
  --cyan: #ffb04d;
  --violet: #ba9cff;
  --mint: #6de1bd;
  --amber: #f7b84b;
  --red: #ff7187;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 82% 8%, rgba(255, 132, 76, .18), transparent 34rem),
    radial-gradient(circle at 12% 32%, rgba(186, 156, 255, .10), transparent 30rem),
    var(--bg);
  font-family: Inter, "Pretendard", "Malgun Gothic", "Segoe UI", system-ui, sans-serif;
  line-height: 1.65;
}
a { color: inherit; }
img { display: block; width: 100%; height: auto; }
code {
  color: #d8e1ff;
  font-family: "Cascadia Code", Consolas, monospace;
  overflow-wrap: anywhere;
}
.wrap { width: min(calc(100% - 2.4rem), var(--max)); margin-inline: auto; }
.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 30;
  padding: .75rem 1rem;
  background: var(--cyan);
  color: #071020;
}
.skip:focus { left: 1rem; top: 1rem; }
.nav {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid rgba(174, 185, 213, .15);
  background: rgba(7, 16, 32, .84);
  backdrop-filter: blur(18px);
}
.nav-inner {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand { font-weight: 800; text-decoration: none; letter-spacing: -.025em; }
.brand span { color: var(--cyan); }
.nav-links { display: flex; align-items: center; gap: 1rem; color: var(--muted); font-size: .92rem; }
.nav-links a { text-decoration: none; }
.nav-links a:hover, .nav-links a:focus-visible { color: var(--ink); }
.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  padding: .65rem 1rem;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface-2);
  font-weight: 750;
  text-decoration: none;
}
.button.primary { border-color: transparent; background: var(--cyan); color: #071020; }
.hero { padding: 5.7rem 0 3.5rem; }
.eyebrow {
  color: var(--cyan);
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .15em;
  text-transform: uppercase;
}
h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -.04em; }
h1 { max-width: 980px; margin-top: .9rem; font-size: clamp(2.8rem, 7vw, 6.4rem); }
h2 { font-size: clamp(2rem, 4.4vw, 3.6rem); }
h3 { font-size: 1.35rem; }
.lead {
  max-width: 820px;
  margin: 1.4rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
}
.hero-actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-top: 2rem; }
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: .85rem; margin-top: 3.3rem; }
.metric {
  min-height: 116px;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(23, 34, 60, .92), rgba(12, 22, 42, .76));
}
.metric strong { display: block; font-size: 1.72rem; }
.metric span { color: var(--muted); font-size: .9rem; }
section { padding: 5rem 0; }
.section-head {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  align-items: end;
  gap: 3rem;
  margin-bottom: 2.25rem;
}
.section-head p { margin: 0; color: var(--muted); }
.panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(17, 26, 48, .88);
  box-shadow: 0 24px 66px rgba(0, 0, 0, .17);
}
.visual { padding: 1rem; background: #f6f8fc; }
.visual.dark { background: var(--surface); }
.visual img { max-height: 700px; object-fit: contain; }
.photo-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .65rem;
  padding: .65rem;
  background: #e8f2ef;
}
.photo-strip img { height: 280px; object-fit: cover; border-radius: 12px; }
.caption { margin: .8rem 0 0; color: var(--muted); font-size: .9rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.card {
  padding: 1.55rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
}
.card p, .card li { color: var(--muted); }
.card ul { margin-bottom: 0; padding-left: 1.15rem; }
.tag {
  display: inline-block;
  margin-bottom: .85rem;
  color: var(--cyan);
  font-size: .75rem;
  font-weight: 850;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.card:nth-child(2n) .tag { color: var(--violet); }
.card:nth-child(3n) .tag { color: var(--mint); }
.status {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .3rem .65rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: .78rem;
  font-weight: 850;
}
.status::before { width: .5rem; height: .5rem; border-radius: 50%; background: currentColor; content: ""; }
.pass { color: var(--mint); }
.blocked { color: var(--amber); }
.na { color: var(--muted); }
.evidence-list { display: grid; gap: .55rem; margin-top: 1rem; }
.evidence-list a { color: var(--cyan); font-weight: 700; }
.waveforms { display: grid; gap: 1.1rem; }
.note {
  padding: 1.35rem 1.5rem;
  border-left: 4px solid var(--amber);
  background: rgba(247, 184, 75, .08);
  color: var(--muted);
}
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--surface);
}
table { width: 100%; border-collapse: collapse; table-layout: fixed; }
th, td {
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
}
th {
  color: var(--muted);
  font-size: .76rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}
td { font-size: .9rem; }
tr:last-child td { border-bottom: 0; }
.repro {
  overflow-x: auto;
  margin: 1.1rem 0 0;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #050b17;
  color: #dce5ff;
  white-space: pre;
}
.footer { padding: 3rem 0 4rem; border-top: 1px solid var(--line); color: var(--muted); }
.footer-inner { display: flex; justify-content: space-between; gap: 1.5rem; }

@media (max-width: 900px) {
  .nav-links a:not(.button) { display: none; }
  .metrics { grid-template-columns: repeat(2, 1fr); }
  .section-head, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .section-head { gap: 1rem; }
}

@media (max-width: 680px) {
  .wrap { width: min(calc(100% - 1.3rem), var(--max)); }
  .hero { padding-top: 4rem; }
  h1 { font-size: clamp(2.25rem, 10vw, 2.75rem); }
  section { padding: 3.7rem 0; }
  .metrics { grid-template-columns: 1fr 1fr; }
  .metric { min-height: 102px; padding: .95rem; }
  .visual { padding: .35rem; border-radius: 14px; }
  .table-wrap { overflow: visible; border: 0; background: transparent; }
  table, tbody, tr, td { display: block; width: 100%; }
  table { table-layout: auto; }
  thead { display: none; }
  tr {
    margin-bottom: .85rem;
    padding: .35rem 1rem;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: var(--surface);
  }
  td {
    display: grid;
    grid-template-columns: minmax(6.6rem, .42fr) 1fr;
    gap: .75rem;
    padding: .7rem 0;
  }
  td::before {
    color: var(--muted);
    font-size: .72rem;
    font-weight: 850;
    letter-spacing: .05em;
    text-transform: uppercase;
    content: attr(data-label);
  }
  .footer-inner { display: block; }
  .photo-strip { grid-template-columns: 1fr; }
  .photo-strip img { height: auto; }
}

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