/* Lambda Finance — single stylesheet, no external fonts or assets (nothing leaves this origin). */

:root {
  --bg: #f6f4ef;
  --bg-raised: #ffffff;
  --bg-sunken: #ece8df;
  --ink: #0e1626;
  --ink-soft: #3d4658;
  --ink-faint: #6b7385;
  --line: #dcd6ca;
  --accent: #a87420;
  --accent-ink: #ffffff;
  --accent-soft: rgba(168, 116, 32, 0.10);
  --grid: rgba(14, 22, 38, 0.06);
  --shadow: 0 1px 2px rgba(14, 22, 38, 0.04), 0 8px 24px rgba(14, 22, 38, 0.06);

  --font-sans: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  --font-mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;

  --max: 1120px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 14px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-raised: #111a2c;
    --bg-sunken: #080e19;
    --ink: #eef1f6;
    --ink-soft: #b4bccb;
    --ink-faint: #7d879a;
    --line: #1f2a40;
    --accent: #e2b45a;
    --accent-ink: #0b1220;
    --accent-soft: rgba(226, 180, 90, 0.10);
    --grid: rgba(238, 241, 246, 0.045);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.25);
    color-scheme: dark;
  }
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration-color: var(--accent); text-underline-offset: 3px; }
a:hover { color: var(--accent); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

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

.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 16px; background: var(--bg-raised); padding: 8px 12px; z-index: 10; }

/* ---------- Header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 5;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }

.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 600; letter-spacing: 0.01em; }
.brand:hover { color: var(--ink); }
.brand svg { width: 28px; height: 28px; flex: none; }
.brand-mark-bg { fill: var(--ink); }
.brand-mark-fg { fill: var(--accent); }

.nav { display: flex; gap: 28px; font-size: 15px; }
.nav a { text-decoration: none; color: var(--ink-soft); }
.nav a:hover { color: var(--ink); }
@media (max-width: 640px) { .nav { display: none; } }

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: clamp(72px, 12vw, 140px) 0 clamp(64px, 10vw, 120px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 80% at 70% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 70% 80% at 70% 40%, #000 30%, transparent 75%);
}
.hero .wrap { position: relative; display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: center; }
@media (max-width: 860px) { .hero .wrap { grid-template-columns: 1fr; } .hero-art { display: none; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before { content: ""; width: 24px; height: 1px; background: currentColor; }

h1, h2, h3 { font-family: var(--font-serif); font-weight: 500; letter-spacing: -0.01em; line-height: 1.12; margin: 0; }
h1 { font-size: clamp(40px, 6.4vw, 72px); margin-top: 20px; text-wrap: balance; }
h1 em { font-style: italic; color: var(--accent); }
.lead { font-size: clamp(18px, 2vw, 21px); color: var(--ink-soft); max-width: 36em; margin: 24px 0 0; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 20px; border-radius: 999px; font-size: 15px; font-weight: 600; text-decoration: none;
  border: 1px solid var(--line); background: var(--bg-raised); color: var(--ink);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.btn:hover { color: var(--ink); border-color: var(--accent); transform: translateY(-1px); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { color: var(--accent-ink); }

.hero-art svg { width: 100%; height: auto; display: block; }
.art-line { fill: none; stroke: var(--ink-faint); stroke-width: 1.5; opacity: 0.55; }
.art-line-accent { fill: none; stroke: var(--accent); stroke-width: 2.5; stroke-linecap: round; stroke-linejoin: round; }
.art-dot { fill: var(--bg); stroke: var(--ink-faint); stroke-width: 1.5; }
.art-dot-accent { fill: var(--accent); }
.art-ring { fill: none; stroke: var(--line); stroke-width: 1; }

/* ---------- Sections ---------- */

section { padding: clamp(72px, 10vw, 120px) 0; }
section + section { border-top: 1px solid var(--line); }

.section-head { max-width: 42em; margin-bottom: 56px; }
.section-head h2 { font-size: clamp(30px, 4vw, 44px); margin-top: 14px; text-wrap: balance; }
.section-head p { color: var(--ink-soft); margin: 18px 0 0; font-size: 18px; }
.section-head-flush { margin-bottom: 0; }

/* What we do */
.pillars { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
@media (max-width: 860px) { .pillars { grid-template-columns: 1fr; } }

.pillar {
  position: relative;
  background: var(--bg-raised); border: 1px solid var(--line); border-radius: var(--radius);
  padding: clamp(28px, 4vw, 44px); box-shadow: var(--shadow);
}
.pillar-index { font-family: var(--font-mono); font-size: 13px; color: var(--ink-faint); letter-spacing: 0.08em; }
.pillar-icon {
  width: 52px; height: 52px; border-radius: 12px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); margin: 20px 0 22px;
}
.pillar-icon svg { width: 26px; height: 26px; }
.pillar h3 { font-size: 28px; }
.pillar p { color: var(--ink-soft); margin: 14px 0 0; }
.pillar ul { list-style: none; padding: 0; margin: 26px 0 0; border-top: 1px solid var(--line); }
.pillar li { padding: 12px 0 12px 28px; border-bottom: 1px solid var(--line); position: relative; font-size: 15px; }
.pillar li::before {
  content: ""; position: absolute; left: 4px; top: 50%; width: 10px; height: 10px; margin-top: -5px;
  border: 2px solid var(--accent); border-radius: 50%;
}

/* Principles */
.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
@media (max-width: 960px) { .principles { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .principles { grid-template-columns: 1fr; } }
.principle { padding: 32px 28px 8px 0; }
.principle + .principle { padding-left: 28px; border-left: 1px solid var(--line); }
@media (max-width: 960px) {
  .principle, .principle + .principle { padding: 32px 24px 24px 0; border-left: 0; }
  .principle:nth-child(even) { padding-left: 24px; border-left: 1px solid var(--line); }
}
@media (max-width: 560px) {
  .principle, .principle + .principle, .principle:nth-child(even) { padding: 28px 0 20px; border-left: 0; border-bottom: 1px solid var(--line); }
}
.principle-num { font-family: var(--font-mono); font-size: 13px; color: var(--accent); }
.principle h3 { font-size: 22px; margin-top: 14px; }
.principle p { color: var(--ink-soft); font-size: 15px; margin: 10px 0 0; }

/* About */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
@media (max-width: 860px) { .about { grid-template-columns: 1fr; } }
.about p { color: var(--ink-soft); margin: 0 0 18px; }
.about p:last-child { margin-bottom: 0; }
.notice {
  background: var(--bg-sunken); border: 1px solid var(--line); border-left: 3px solid var(--accent);
  border-radius: 10px; padding: 24px 26px;
}
.notice h3 { font-family: var(--font-sans); font-size: 14px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink); }
.notice p { font-size: 15px; margin-top: 10px; }

/* Contact */
.contact { text-align: center; }
.contact .section-head { margin-left: auto; margin-right: auto; margin-bottom: 36px; }
.contact .eyebrow { justify-content: center; }
.contact-mail {
  font-family: var(--font-serif); font-size: clamp(24px, 4vw, 40px); text-decoration: none;
  border-bottom: 1px solid var(--accent); padding-bottom: 4px; overflow-wrap: anywhere;
}

/* ---------- Footer ---------- */

.site-footer { border-top: 1px solid var(--line); padding: 32px 0 40px; font-size: 14px; color: var(--ink-faint); }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; align-items: center; }
.site-footer nav { display: flex; gap: 24px; }
.site-footer a { text-decoration: none; }

/* ---------- Legal pages ---------- */

.legal { padding: clamp(56px, 8vw, 96px) 0; }
.legal .wrap { max-width: 760px; }
.legal h1 { font-size: clamp(36px, 5vw, 52px); margin: 14px 0 40px; }
.legal h2 { font-size: 24px; margin: 44px 0 12px; }
.legal p, .legal li { color: var(--ink-soft); }
.legal address { font-style: normal; color: var(--ink-soft); }
.back { display: inline-block; margin-top: 48px; font-size: 15px; }