/* Lighthouse Strategy Partners — one-page site.
   Light technical look: warm paper, ink lines, monospace labels.
   Single deliberate theme (no dark variant). System fonts only. */

:root {
  --paper: #f6f4ef;
  --sheet: #ffffff;
  --ink: #1c1c1a;
  --ink-soft: #55554f;
  --rule: #c9c6bc;
  --rule-strong: #1c1c1a;
  --accent: #1f4f8f;
  --ok: #2f6b3c;
  --warn: #9a5b12;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --gutter: clamp(16px, 4vw, 40px);
  --measure: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
}
a { color: inherit; }
img { max-width: 100%; }

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

.label {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* ── Header ─────────────────────────────────────────────── */
.site-head {
  border-bottom: 1px solid var(--rule-strong);
  position: sticky;
  top: 0;
  background: var(--paper);
  z-index: 10;
}
.site-head .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-block: 14px;
}
.brand {
  font-family: var(--mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  font-weight: 600;
}
.site-nav { display: flex; flex-wrap: wrap; gap: 6px 22px; }
.site-nav a {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
}
.site-nav a:hover, .site-nav a:focus-visible { color: var(--ink); text-decoration: underline; }

/* ── Hero ───────────────────────────────────────────────── */
.hero { padding-block: clamp(48px, 9vw, 104px) clamp(40px, 7vw, 80px); }
.hero h1 {
  margin: 14px 0 20px;
  font-size: clamp(2rem, 5.2vw, 3.6rem);
  line-height: 1.08;
  font-weight: 500;
  letter-spacing: -0.02em;
  max-width: 18ch;
}
.hero p.lede {
  margin: 0 0 28px;
  font-size: clamp(1.02rem, 1.6vw, 1.2rem);
  color: var(--ink-soft);
  max-width: 58ch;
}
.btn {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 12px 18px;
  border: 1px solid var(--ink);
}
.btn.solid { background: var(--ink); color: var(--paper); }
.btn:hover, .btn:focus-visible { background: var(--accent); border-color: var(--accent); color: #fff; }
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; }

.facts {
  margin: clamp(36px, 6vw, 64px) 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  border-top: 1px solid var(--rule-strong);
  border-left: 1px solid var(--rule);
}
.facts li {
  padding: 16px 18px 18px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.facts b {
  display: block;
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}
.facts span { font-size: 0.86rem; color: var(--ink-soft); }

/* ── Sections ───────────────────────────────────────────── */
section { padding-block: clamp(44px, 7vw, 88px); border-top: 1px solid var(--rule-strong); }
.sec-head { display: grid; gap: 10px; margin-bottom: clamp(24px, 4vw, 40px); max-width: 64ch; }
.sec-head h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3.2vw, 2.2rem);
  line-height: 1.15;
  font-weight: 500;
  letter-spacing: -0.015em;
}
.sec-head p { margin: 0; color: var(--ink-soft); }

/* ── Flagship product ───────────────────────────────────── */
.flagship { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: clamp(24px, 4vw, 56px); align-items: start; }
.flagship ul { margin: 18px 0 0; padding: 0; list-style: none; display: grid; gap: 10px; }
.flagship li { padding-left: 22px; position: relative; }
.flagship li::before { content: "—"; position: absolute; left: 0; color: var(--ink-soft); }
.status {
  margin-top: 22px;
  padding: 12px 14px;
  border: 1px dashed var(--rule-strong);
  font-size: 0.92rem;
}

/* ── Group + cards ──────────────────────────────────────── */
.group { margin-top: clamp(28px, 4vw, 44px); }
.group:first-of-type { margin-top: 0; }
.group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule-strong);
  margin-bottom: 0;
}
.group-head h3 { margin: 0; font-size: 1.12rem; font-weight: 600; }
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  border-left: 1px solid var(--rule);
}
.card {
  padding: 18px 18px 20px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  background: transparent;
}
.card h4 { margin: 6px 0 6px; font-size: 1rem; font-weight: 600; }
.card p { margin: 0; font-size: 0.92rem; color: var(--ink-soft); }
.card .tag { color: var(--accent); }

.group.with-render { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: clamp(20px, 3vw, 36px); align-items: start; }
.group.with-render .group-head { grid-column: 1 / -1; }
.group.with-render .cards { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

/* ── Redrawn screens ────────────────────────────────────── */
.screen {
  background: var(--sheet);
  border: 1px solid var(--rule-strong);
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--ink);
  min-width: 0;
}
.screen-bar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--rule-strong);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.66rem;
}
.screen-bar span:last-child { color: var(--ink-soft); }
.screen-body { padding: 12px; display: grid; gap: 12px; }
.screen figcaption, .caption {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--ink-soft);
  margin-top: 8px;
}
figure { margin: 0; min-width: 0; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 8px; }
.kpi { border: 1px solid var(--rule); padding: 8px 10px; }
.kpi b { display: block; font-size: 1rem; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 2px; }
.kpi small { color: var(--ink-soft); font-size: 0.64rem; text-transform: uppercase; letter-spacing: 0.05em; }

.rows { display: grid; }
.row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 7px 0;
  border-top: 1px dashed var(--rule);
}
.row:first-child { border-top: 0; }
.row span:last-child { text-align: right; white-space: nowrap; }
.pill { padding: 1px 6px; border: 1px solid currentColor; font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.05em; }
.pill.ok { color: var(--ok); }
.pill.warn { color: var(--warn); }
.pill.off { color: var(--ink-soft); }

.capture { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: center; border: 1px solid var(--rule); padding: 10px; }
.receipt {
  width: 54px; height: 70px;
  border: 1px solid var(--ink);
  background: repeating-linear-gradient(to bottom, transparent 0 7px, var(--rule) 7px 8px);
}

.stepper { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border: 1px solid var(--rule); }
.step { padding: 8px 6px; border-right: 1px solid var(--rule); text-align: center; font-size: 0.62rem; text-transform: uppercase; letter-spacing: 0.04em; }
.step:last-child { border-right: 0; background: var(--ink); color: var(--paper); }
.step b { display: block; font-size: 0.86rem; margin-bottom: 2px; }
.post { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.post .fake-btn { border: 1px solid var(--ink); padding: 6px 10px; text-transform: uppercase; letter-spacing: 0.06em; font-size: 0.64rem; }

.cam {
  position: relative;
  aspect-ratio: 16 / 9;
  max-width: 100%;
  background:
    linear-gradient(to top, #2a2a27 0 22%, transparent 22%),
    #3a3a36;
  overflow: hidden;
}
.cam .box { position: absolute; border: 1.5px solid #f6f4ef; color: #f6f4ef; font-size: 0.6rem; padding: 1px 3px; }
.cam .box i { position: absolute; left: -1.5px; top: -15px; background: #f6f4ef; color: #1c1c1a; font-style: normal; padding: 0 4px; white-space: nowrap; }
.cam .stamp { position: absolute; left: 8px; bottom: 6px; color: #d8d5cb; font-size: 0.6rem; }

.question { border: 1px solid var(--rule); padding: 10px; font-family: var(--sans); font-size: 0.84rem; }
.question ol { margin: 8px 0 0; padding-left: 20px; color: var(--ink-soft); }
.question li.sel { color: var(--ink); font-weight: 600; }

/* ── Method ─────────────────────────────────────────────── */
.method { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); border-left: 1px solid var(--rule); border-top: 1px solid var(--rule-strong); }
.method article { padding: 20px 18px 24px; border-right: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.method h3 { margin: 8px 0 8px; font-size: 1.04rem; font-weight: 600; }
.method p { margin: 0; font-size: 0.94rem; color: var(--ink-soft); }

/* ── Firm + contact ─────────────────────────────────────── */
.firm { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: clamp(24px, 4vw, 56px); }
.firm p { margin: 0 0 14px; max-width: 60ch; }
.sheet { background: var(--sheet); border: 1px solid var(--rule-strong); padding: 6px 16px; font-family: var(--mono); font-size: 0.8rem; align-self: start; }
.sheet .row span:first-child { color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.05em; font-size: 0.68rem; }
.sheet .row span:last-child { white-space: normal; }

.contact h2 { max-width: 20ch; }
.contact .mail {
  display: inline-block;
  margin-top: 6px;
  font-size: clamp(1.2rem, 3.4vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.01em;
  text-decoration-thickness: 1px;
  text-underline-offset: 6px;
  overflow-wrap: anywhere;
}
.contact .mail:hover, .contact .mail:focus-visible { color: var(--accent); }

.site-foot { border-top: 1px solid var(--rule-strong); padding-block: 22px 40px; }
.site-foot .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 24px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* ── Narrow screens ─────────────────────────────────────── */
@media (max-width: 860px) {
  .flagship, .firm, .group.with-render { grid-template-columns: minmax(0, 1fr); }
  .site-head { position: static; }
}
@media (max-width: 480px) {
  .stepper { grid-template-columns: repeat(2, 1fr); }
  .step { border-bottom: 1px solid var(--rule); }
  .step:last-child { grid-column: 1 / -1; border-bottom: 0; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }