/* =========================================================
   OcuOS — Legal documents  ·  shares landing tokens
   ========================================================= */

:root {
  --bg:        #F7F9FB;
  --bg-elev:   #FFFFFF;
  --ink-900:   #0A1A24;
  --ink-700:   #243947;
  --ink-500:   #5A6F7D;
  --ink-300:   #93A4AF;
  --line:      #E3E9EE;

  --iris-600:  #0E7C86;
  --iris-500:  #12A3AE;
  --iris-300:  #6FD8DE;
  --aperture:  #0B5E66;

  --night:     #06141B;

  --maxw: 880px;
  --pad:  clamp(20px, 5vw, 48px);

  --font-sans: "Pretendard", -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", system-ui, sans-serif;
  --font-disp: "Space Grotesk", var(--font-sans);
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink-700);
  font-size: 16px;
  line-height: 1.78;
  letter-spacing: -0.005em;
}

a { color: var(--iris-600); text-decoration: none; }
a:hover { text-decoration: underline; }
::selection { background: var(--iris-300); color: var(--night); }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(247,249,251,0.85);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar .inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 14px var(--pad);
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-disp); font-weight: 700; font-size: 19px;
  color: var(--ink-900); letter-spacing: -0.02em;
}
.brand .mark {
  width: 22px; height: 22px; border-radius: 50%;
  border: 2.5px solid var(--iris-600);
  position: relative; flex: none;
}
.brand .mark::after {
  content: ""; position: absolute; inset: 4px; border-radius: 50%;
  background: var(--iris-600);
}
.back {
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em;
  color: var(--ink-500); display: inline-flex; align-items: center; gap: 7px;
}
.back:hover { color: var(--iris-600); text-decoration: none; }
.back svg { width: 15px; height: 15px; }

/* ---------- header block ---------- */
.doc-head {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(48px, 8vw, 88px) var(--pad) clamp(28px, 4vw, 44px);
}
.eyebrow {
  font-family: var(--font-mono); font-size: 12.5px;
  letter-spacing: 0.18em; text-transform: uppercase; color: var(--iris-600);
  display: inline-flex; align-items: center; gap: 10px; margin-bottom: 20px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--iris-500); }
.doc-head h1 {
  font-family: var(--font-disp);
  color: var(--ink-900); font-weight: 700;
  font-size: clamp(2rem, 5vw, 3rem); letter-spacing: -0.03em; line-height: 1.1;
}
.doc-head .meta {
  margin-top: 18px; font-size: 14px; color: var(--ink-500);
  display: flex; flex-wrap: wrap; gap: 8px 18px;
}
.doc-head .meta .mono { font-family: var(--font-mono); }

/* ---------- intro card ---------- */
.intro {
  max-width: var(--maxw); margin: 0 auto;
  padding: 0 var(--pad);
}
.intro .card {
  background: var(--bg-elev); border: 1px solid var(--line); border-radius: 14px;
  padding: 22px 24px; color: var(--ink-700); font-size: 15px; line-height: 1.7;
}
.intro .card strong { color: var(--ink-900); }

/* ---------- body ---------- */
.doc-body {
  max-width: var(--maxw); margin: 0 auto;
  padding: clamp(36px, 5vw, 56px) var(--pad) clamp(64px, 9vw, 110px);
}

.art { padding: 30px 0; border-top: 1px solid var(--line); }
.art:first-child { border-top: none; padding-top: 8px; }

.art > h2 {
  font-family: var(--font-disp);
  color: var(--ink-900); font-weight: 700;
  font-size: clamp(1.2rem, 2.2vw, 1.5rem); letter-spacing: -0.02em; line-height: 1.3;
  display: flex; gap: 12px; align-items: baseline;
}
.art > h2 .no {
  font-family: var(--font-mono); font-size: 13px; font-weight: 600;
  color: var(--iris-600); letter-spacing: 0.04em; flex: none;
  padding-top: 4px;
}
.art > p, .art > ol, .art > ul { margin-top: 14px; }
.art p + p { margin-top: 12px; }

.art ol, .art ul { padding-left: 4px; list-style: none; }
.art ol > li, .art ul > li {
  position: relative; padding-left: 26px; margin-top: 9px;
}
.art ol { counter-reset: item; }
.art ol > li::before {
  counter-increment: item; content: counter(item) ".";
  position: absolute; left: 0; top: 0;
  font-family: var(--font-mono); font-size: 13px; color: var(--iris-600); font-weight: 500;
}
.art ul > li::before {
  content: ""; position: absolute; left: 6px; top: 12px;
  width: 5px; height: 5px; border-radius: 50%; background: var(--iris-500);
}
.art li strong { color: var(--ink-900); }

/* nested */
.art li ul, .art li ol { margin-top: 6px; }

/* data table */
.tbl {
  margin-top: 16px; width: 100%; border-collapse: collapse;
  font-size: 14.5px; background: var(--bg-elev);
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
}
.tbl th, .tbl td { text-align: left; padding: 13px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl thead th {
  background: #EEF3F6; color: var(--ink-900); font-weight: 600; font-size: 13px;
  font-family: var(--font-mono); letter-spacing: 0.02em;
}
.tbl tbody tr:last-child td { border-bottom: none; }
.tbl td:first-child { color: var(--ink-900); font-weight: 500; white-space: nowrap; }

/* callout */
.note {
  margin-top: 16px; background: #EAF6F7; border: 1px solid #C9E8EA;
  border-radius: 12px; padding: 16px 18px; font-size: 14.5px; color: var(--aperture);
}
.note strong { color: var(--iris-600); }

.placeholder {
  font-family: var(--font-mono); font-size: 0.92em; color: var(--ink-300);
  background: #EDF1F4; border: 1px dashed var(--line); border-radius: 6px;
  padding: 1px 7px; letter-spacing: 0.02em;
}

/* ---------- footer ---------- */
.foot {
  border-top: 1px solid var(--line); background: var(--bg-elev);
}
.foot .inner {
  max-width: var(--maxw); margin: 0 auto; padding: 28px var(--pad);
  display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between;
  font-size: 13.5px; color: var(--ink-500);
}
.foot .links { display: flex; gap: 20px; flex-wrap: wrap; }
.foot .links a { color: var(--ink-500); }
.foot .links a:hover { color: var(--iris-600); text-decoration: none; }
.foot .mono { font-family: var(--font-mono); letter-spacing: 0.02em; }