/* ===== 0PN Lab Sandbox — stylesheet =====
   Aesthetic: serious, evidence-forward, standards-credible.
   Palette: deep navy ink + forest green accent on warm paper. */
:root {
  --navy: #0f2a4a;
  --navy-2: #1e3063;
  --green: #1a5d2e;
  --green-deep: #134322;
  --paper: #fbfaf7;
  --paper-2: #f3f1ea;
  --ink: #1a2230;
  --muted: #5a6472;
  --line: #e2ded3;
  --maxw: 1080px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
code { font-family: ui-monospace, "SF Mono", Menlo, monospace; background: var(--paper-2); padding: 2px 6px; border-radius: 5px; font-size: .9em; color: var(--navy-2); }

h1, h2, h3 { font-family: "Newsreader", Georgia, serif; line-height: 1.12; color: var(--navy); font-weight: 500; }
.section-title { font-size: clamp(1.8rem, 4vw, 2.6rem); }
.section-sub { color: var(--muted); margin: 12px 0 40px; font-size: 1.1rem; max-width: 600px; }

.btn { display: inline-block; font-family: "Inter", sans-serif; font-weight: 600; text-decoration: none; border-radius: 8px; transition: transform .12s, background .15s, border-color .15s; cursor: pointer; border: none; }
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--green); color: #fff; }
.btn-primary:hover { background: var(--green-deep); }
.btn-ghost { background: transparent; color: var(--navy); border: 1.5px solid var(--line); }
.btn-ghost:hover { border-color: var(--green); color: var(--green); }
.btn-sm { padding: 9px 18px; font-size: .9rem; }
.btn-lg { padding: 14px 30px; font-size: 1.05rem; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 40; background: rgba(251,250,247,.88); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: baseline; gap: 10px; text-decoration: none; }
.brand-mark { font-family: "Newsreader", serif; font-size: 1.45rem; font-weight: 600; color: var(--navy); letter-spacing: .3px; }
.brand-dot { color: var(--green); }
.brand-tag { font-size: .72rem; text-transform: uppercase; letter-spacing: 2px; color: var(--green); font-weight: 700; border: 1px solid var(--green); border-radius: 999px; padding: 3px 9px; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { color: var(--muted); text-decoration: none; font-weight: 500; font-size: .95rem; }
.nav a:hover { color: var(--navy); }

/* Hero */
.hero { padding: clamp(60px, 11vw, 120px) 0 clamp(48px, 8vw, 84px); background: radial-gradient(900px 420px at 78% -10%, rgba(26,93,46,.10), transparent 62%); border-bottom: 1px solid var(--line); }
.eyebrow { color: var(--green); font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase; font-size: .8rem; }
.hero h1 { font-size: clamp(2.4rem, 6.5vw, 4.2rem); margin: 18px 0 20px; font-weight: 500; }
.hero h1 em { font-style: italic; color: var(--green); }
.lede { color: var(--muted); font-size: 1.2rem; max-width: 640px; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; margin: 32px 0 18px; }
.hero-note { color: var(--muted); font-size: .92rem; max-width: 560px; }

/* Inspect */
.inspect { padding: clamp(56px, 9vw, 96px) 0; }
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 26px; transition: transform .15s, border-color .15s, box-shadow .15s; }
.card:hover { transform: translateY(-3px); border-color: var(--green); box-shadow: 0 10px 30px rgba(15,42,74,.06); }
.card-num { font-family: "Newsreader", serif; font-size: 1.1rem; color: var(--green); font-weight: 600; }
.card h3 { font-size: 1.25rem; margin: 8px 0 10px; }
.card p { color: var(--muted); font-size: .98rem; }
.card-quiet { background: var(--paper-2); border-style: dashed; }

/* How */
.how { padding: clamp(56px, 9vw, 96px) 0; background: var(--paper-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.steps { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.steps li { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 26px; }
.step-num { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 50%; background: var(--navy); color: #fff; font-family: "Newsreader", serif; font-size: 1.15rem; margin-bottom: 14px; }
.steps h3 { font-size: 1.2rem; margin-bottom: 8px; }
.steps p { color: var(--muted); font-size: .97rem; }

/* Access */
.access { padding: clamp(56px, 9vw, 100px) 0; }
.access-inner { max-width: 620px; margin: 0 auto; }
.access-form { display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: .92rem; color: var(--navy); }
.field input, .field select, .field textarea { font-family: "Inter", sans-serif; font-size: 1rem; padding: 12px 14px; border: 1.5px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink); width: 100%; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--green); }
.field textarea { resize: vertical; }
.access-form .btn { justify-self: start; }
.form-note { color: var(--muted); font-size: .88rem; }
.access-confirm { background: #fff; border: 1.5px solid var(--green); border-radius: 12px; padding: 28px; }
.access-confirm h3 { font-size: 1.4rem; margin-bottom: 10px; }
.access-confirm p { color: var(--muted); margin-bottom: 8px; }
.access-confirm a { color: var(--green); }

/* Footer */
.site-footer { background: var(--navy); color: #cdd6e2; padding: 48px 0; }
.footer-inner { text-align: center; }
.footer-brand { font-family: "Newsreader", serif; font-size: 1.5rem; color: #fff; font-weight: 600; }
.footer-inner p { font-size: .92rem; margin-top: 10px; color: #aebbcc; }
.footer-links a { color: #fff; text-decoration: none; }
.footer-links a:hover { color: #7fd99a; }
.footer-fine { font-size: .82rem !important; color: #8595a8 !important; margin-top: 18px !important; }
.footer-fine a { color: #aebbcc; }

@media (max-width: 820px) {
  .card-grid, .steps { grid-template-columns: 1fr; }
  .nav a:not(.btn) { display: none; }
}

/* ===== 0PN Lab home additions ===== */
.pkg-list { list-style: none; margin: 14px 0; padding: 0; }
.pkg-list li { color: var(--muted); font-size: .95rem; padding: 5px 0 5px 22px; position: relative; }
.pkg-list li::before { content: "\2713"; color: var(--green); position: absolute; left: 0; font-weight: 700; }
.pkg-benefit { color: var(--ink); font-size: .92rem; margin-top: 6px; border-top: 1px solid var(--line); padding-top: 12px; }
.pkg-benefit strong { color: var(--navy); }
.card-cta { display: inline-block; margin-top: 14px; color: var(--green); font-weight: 600; text-decoration: none; }
.card-cta:hover { color: var(--green-deep); }
.addendum { margin-top: 28px; color: var(--muted); font-size: .95rem; background: var(--paper-2); border: 1px dashed var(--line); border-radius: 10px; padding: 18px 22px; }
.addendum a { color: var(--green); }
.contact-card-row { display: flex; gap: 14px; flex-wrap: wrap; }