/* Lantern Labs. Layout: a left-aligned editorial column with a thin rail of mono eyebrows;
   one warm amber "lantern" accent on a cool slate page, everything else quiet. */
:root {
  --paper: #F1F3F0;
  --surface: #FAFBF9;
  --surface-2: #E4E8E3;
  --ink: #141A1F;
  --ink-2: #4E5962;
  --line: #CDD3CE;
  --amber: #E29A2B;
  --amber-ink: #8D5706;
  --glow: rgba(226, 154, 43, 0.22);
  --cta-bg: #1C3B46;
  --cta-fg: #F4F6F3;
  --cta-bg-hover: #16303A;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "IBM Plex Sans", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Menlo, monospace;
  --measure: 62ch;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0F1417; --surface: #151B1F; --surface-2: #1C242A;
    --ink: #E7EAE6; --ink-2: #A2ACB2; --line: #2A343B;
    --amber: #F0B04A; --amber-ink: #F0B04A; --glow: rgba(240, 176, 74, 0.18);
    --cta-bg: #F0B04A; --cta-fg: #121619; --cta-bg-hover: #F7C06A;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0F1417; --surface: #151B1F; --surface-2: #1C242A;
  --ink: #E7EAE6; --ink-2: #A2ACB2; --line: #2A343B;
  --amber: #F0B04A; --amber-ink: #F0B04A; --glow: rgba(240, 176, 74, 0.18);
  --cta-bg: #F0B04A; --cta-fg: #121619; --cta-bg-hover: #F7C06A;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition: none !important; animation: none !important; } }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }
a { color: inherit; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--amber); outline-offset: 3px;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding-left: var(--gutter-l);
  padding-right: var(--gutter-r);
}

/* Type */
h1, h2, h3 { font-family: var(--font-display); letter-spacing: -0.015em; text-wrap: balance; margin: 0; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.9rem); line-height: 1.04; font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.5rem); line-height: 1.12; font-weight: 700; }
h3 { font-size: 1.15rem; line-height: 1.3; font-weight: 600; }
p { margin: 0; }
.lede { font-size: 1.2rem; line-height: 1.55; color: var(--ink-2); max-width: var(--measure); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--amber-ink);
  display: flex; align-items: center; gap: 0.7rem;
}
.eyebrow::before { content: ""; width: 1.6rem; height: 1px; background: var(--amber); flex: none; }
.muted { color: var(--ink-2); }
.mono { font-family: var(--font-mono); font-size: 0.8rem; letter-spacing: 0.04em; }

/* Header */
.site-header {
  position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
body::before { content: ""; position: fixed; inset: 0 0 auto; height: env(safe-area-inset-top, 0px); z-index: 30; background: var(--paper); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 64px; }
.brand { display: flex; align-items: center; gap: 0.6rem; text-decoration: none; font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; font-size: 1.05rem; }
.brand .mark { width: 22px; height: 22px; flex: none; }
.nav-links { display: flex; gap: 1.4rem; align-items: center; list-style: none; margin: 0; padding: 0; }
.nav-links a { text-decoration: none; font-size: 0.92rem; color: var(--ink-2); }
.nav-links a:hover { color: var(--ink); }
@media (max-width: 720px) { .nav-links li:not(.nav-cta) { display: none; } }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--font-display); font-weight: 600; font-size: 0.95rem;
  padding: 0.85rem 1.3rem; border-radius: 4px; text-decoration: none; border: 1px solid transparent;
  cursor: pointer; transition: background 0.15s ease, transform 0.15s ease;
}
.btn-primary { background: var(--cta-bg); color: var(--cta-fg); }
.btn-primary:hover { background: var(--cta-bg-hover); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--ink-2); }
.btn-sm { padding: 0.55rem 0.95rem; font-size: 0.85rem; }
.btn .arrow { transition: transform 0.15s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* Sections */
.section { padding-block: clamp(3.5rem, 8vw, 6.5rem); border-top: 1px solid var(--line); }
.section-head { display: grid; gap: 1.1rem; max-width: 760px; margin-bottom: clamp(2rem, 5vw, 3.5rem); }

/* Hero */
.hero { padding-block: clamp(3.5rem, 9vw, 7rem) clamp(3rem, 7vw, 5.5rem); position: relative; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); align-items: end; }
@media (max-width: 860px) { .hero-grid { grid-template-columns: 1fr; } }
.hero-copy { display: grid; gap: 1.5rem; min-width: 0; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem 1rem; align-items: center; }
.hero-note { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-2); }
.hero-side { display: grid; gap: 1rem; min-width: 0; }
.lantern-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 1.4rem 1.5rem;
  display: grid; gap: 0.9rem; position: relative;
  box-shadow: 0 0 0 6px var(--glow), 0 24px 60px -30px rgba(0,0,0,0.35);
}
.lantern-card .label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--amber-ink); }
.lantern-card ol { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.55rem; font-size: 0.95rem; }
.lantern-card li::marker { font-family: var(--font-mono); color: var(--ink-2); }
.hero-facts { display: flex; flex-wrap: wrap; gap: 0.4rem 1.6rem; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2); }

/* Problem cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card { background: var(--paper); padding: 1.5rem 1.4rem; display: grid; gap: 0.7rem; align-content: start; min-width: 0; }
.card h3 { font-size: 1.05rem; }
.card p { color: var(--ink-2); font-size: 0.97rem; }
.card .tag { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2); }
.callout { margin-top: 2rem; padding: 1.3rem 1.5rem; border-left: 3px solid var(--amber); background: var(--surface); font-size: 1.08rem; max-width: 760px; }

/* System grid */
.system { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 2rem 3rem; }
.system-item { display: grid; gap: 0.5rem; min-width: 0; padding-top: 1rem; border-top: 2px solid var(--ink); }
.system-item .idx { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; color: var(--ink-2); }
.system-item p { color: var(--ink-2); font-size: 0.98rem; }
.system-item .outcome { color: var(--ink); font-weight: 500; font-size: 0.95rem; }
.system-item .outcome::before { content: "Outcome · "; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--amber-ink); }

/* Process */
.steps { display: grid; gap: 0; border-top: 1px solid var(--line); }
.step { display: grid; grid-template-columns: 140px minmax(0, 1fr); gap: 1.5rem; padding: 1.6rem 0; border-bottom: 1px solid var(--line); }
@media (max-width: 640px) { .step { grid-template-columns: 1fr; gap: 0.5rem; } }
.step .when { font-family: var(--font-mono); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--amber-ink); line-height: 1.5; }
.step .when b { display: block; color: var(--ink); font-weight: 600; font-size: 1.3rem; font-family: var(--font-display); letter-spacing: -0.01em; }
.step-body { display: grid; gap: 0.5rem; }
.step-body p { color: var(--ink-2); max-width: var(--measure); }
.terms { margin-top: 2rem; display: flex; flex-wrap: wrap; gap: 0.6rem; }
.term { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.08em; text-transform: uppercase; padding: 0.45rem 0.75rem; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-2); }

/* About / proof */
.about { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(2rem, 5vw, 4rem); align-items: start; }
@media (max-width: 860px) { .about { grid-template-columns: 1fr; } }
.about-copy { display: grid; gap: 1.2rem; min-width: 0; }
.about-copy p { max-width: var(--measure); }
.who { display: flex; gap: 1rem; align-items: center; padding-top: 0.6rem; }
.who .avatar { width: 52px; height: 52px; border-radius: 50%; background: var(--surface-2); border: 1px solid var(--line); display: grid; place-items: center; font-family: var(--font-display); font-weight: 700; color: var(--ink); flex: none; }
.who .name { font-weight: 600; }
.who .role { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2); }
.case { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 1.6rem; display: grid; gap: 1rem; min-width: 0; }
.case .label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--amber-ink); }
.case ul { margin: 0; padding-left: 1.1rem; display: grid; gap: 0.5rem; color: var(--ink-2); font-size: 0.97rem; }
.case .foot { font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-2); letter-spacing: 0.04em; border-top: 1px solid var(--line); padding-top: 0.9rem; }

/* FAQ */
.faq { display: grid; border-top: 1px solid var(--line); max-width: 820px; }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { cursor: pointer; list-style: none; padding: 1.1rem 0; font-family: var(--font-display); font-weight: 600; font-size: 1.05rem; display: flex; justify-content: space-between; gap: 1rem; align-items: center; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; font-family: var(--font-mono); color: var(--amber-ink); font-size: 1.2rem; flex: none; }
.faq details[open] summary::after { content: "–"; }
.faq .answer { padding: 0 0 1.3rem; color: var(--ink-2); max-width: var(--measure); }

/* Final CTA */
.cta-band { background: var(--surface); border-top: 1px solid var(--line); }
.cta-inner { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr); gap: 2rem; align-items: center; padding-block: clamp(3rem, 7vw, 5.5rem); }
@media (max-width: 860px) { .cta-inner { grid-template-columns: 1fr; } }
.cta-inner h2 { max-width: 20ch; }
.cta-actions { display: grid; gap: 0.9rem; justify-items: start; }
.email-line { display: flex; flex-wrap: wrap; gap: 0.6rem; align-items: center; font-family: var(--font-mono); font-size: 0.9rem; }
.email-line a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--amber); }
.copy-btn { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; background: transparent; color: var(--ink-2); border: 1px solid var(--line); border-radius: 3px; padding: 0.3rem 0.55rem; cursor: pointer; }
.copy-btn:hover { color: var(--ink); border-color: var(--ink-2); }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding-block: 2rem; }
.foot-row { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.8rem 2rem; font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.06em; color: var(--ink-2); }
.foot-row a { text-decoration: none; }

/* Contact page */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr); gap: clamp(2rem, 5vw, 4rem); padding-block: clamp(3rem, 7vw, 5.5rem); }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.contact-intro { display: grid; gap: 1.3rem; align-content: start; min-width: 0; }
.contact-intro ul { margin: 0; padding-left: 1.1rem; color: var(--ink-2); display: grid; gap: 0.4rem; }
.form { display: grid; gap: 1.1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: clamp(1.2rem, 3vw, 2rem); min-width: 0; }
.field { display: grid; gap: 0.4rem; min-width: 0; }
.field label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-2); }
.field label .opt { text-transform: none; letter-spacing: 0; color: var(--ink-2); opacity: 0.8; }
.field input, .field textarea {
  width: 100%; font: inherit; font-size: 1rem; color: var(--ink); background: var(--paper);
  border: 1px solid var(--line); border-radius: 4px; padding: 0.75rem 0.85rem;
}
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field textarea:focus { border-color: var(--amber); outline: none; box-shadow: 0 0 0 3px var(--glow); }
.row-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr)); gap: 1.1rem; }
.form-foot { display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between; }
.form-foot .small { font-size: 0.85rem; color: var(--ink-2); }
.status { display: grid; gap: 0.5rem; padding: 1rem 1.1rem; border-radius: 4px; border: 1px solid var(--line); background: var(--paper); font-size: 0.95rem; }
.status.ok { border-color: var(--amber); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }