/* GradSignal — Harbor & Copper design system */
:root {
  --ink: #0E2233; --primary: #1D5FA8; --copper: #E0864A; --copper-deep: #9B4E1E;
  --page: #F6F8F9; --card: #FFFFFF; --band: #EDF1F4; --border: #D9E1E7; --input-border: #CBD6DE;
  --heading: #0E2233; --body: #3E4C57; --muted: #5A6B77; --placeholder: #8896A1;
  --body-dark: #AEC2D0; --muted-dark: #7F94A3;
  --chip-blue-bg: #E2ECF5; --chip-copper-bg: #FBE8DA; --code-text: #D8E4EC;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { background: var(--page); color: var(--heading); font-family: 'Libre Franklin', sans-serif; font-size: 15px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
p { text-wrap: pretty; }
img { display: block; max-width: 100%; }

.shell { max-width: 1280px; margin: 0 auto; }
.px { padding-left: 56px; padding-right: 56px; }
.section { padding-top: 76px; padding-bottom: 76px; }
.band { background: var(--band); }
.band-white { background: var(--card); }
.band-ink { background: var(--ink); color: var(--page); }

/* ── Nav ── */
.nav { background: var(--card); border-bottom: 1px solid var(--border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 18px 56px; }
.nav-brand { display: flex; align-items: center; gap: 11px; }
.logo-mask { height: 28px; width: 28px; display: block; background-color: var(--primary);
  -webkit-mask: url("/assets/logo-mark.png") center / contain no-repeat; mask: url("/assets/logo-mark.png") center / contain no-repeat; }
.logo-mask.copper { background-color: var(--copper); }
.wordmark { font-family: 'Archivo', sans-serif; font-weight: 700; font-size: 21px; letter-spacing: -0.02em; color: var(--ink); }
.wordmark span { color: var(--primary); }
.band-ink .wordmark { color: var(--page); }
.nav-links { display: flex; align-items: center; gap: 28px; font-size: 14px; font-weight: 500; color: var(--body); }
.nav-links a:hover { color: var(--ink); }
.nav-links a.active { color: var(--ink); font-weight: 600; }

/* ── Type ── */
.eyebrow { font-family: 'IBM Plex Mono', monospace; font-size: 14.5px; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--primary); display: flex; align-items: center; gap: 12px; }
.eyebrow.on-dark { color: var(--copper); }
.eyebrow.on-dark::before { content: ""; height: 2px; width: 34px; background: var(--copper); display: block; }
.h1 { font-family: 'Archivo', sans-serif; font-weight: 700; font-size: 68px; line-height: 1.04; letter-spacing: -0.032em; }
.h2 { font-family: 'Archivo', sans-serif; font-weight: 700; font-size: 42px; line-height: 1.1; letter-spacing: -0.03em; }
.h3 { font-family: 'Archivo', sans-serif; font-weight: 600; font-size: 20px; letter-spacing: -0.015em; }
.lede-lg { font-size: 19px; line-height: 1.6; color: var(--body); max-width: 46ch; }
.lede { font-size: 18px; line-height: 1.65; color: var(--body); max-width: 62ch; }
.body-copy { font-size: 15px; line-height: 1.65; color: var(--body); }
.small { font-size: 14px; line-height: 1.65; }
.muted { color: var(--muted); }
.on-dark .lede-lg, .band-ink .lede-lg { color: var(--body-dark); }
.copper-text { color: var(--copper); }
.copper-deep-text { color: var(--copper-deep); }
.primary-text { color: var(--primary); }

/* ── Buttons ── */
.btn { display: inline-block; border-radius: 6px; font-weight: 600; font-size: 15px; padding: 14px 26px; font-family: 'Libre Franklin', sans-serif; border: 0; cursor: pointer; }
.btn-sm { padding: 10px 20px; font-size: 14px; }
.btn-primary { background: var(--primary); color: #FFFFFF; }
.btn-primary:hover { background: #17518F; }
.btn-accent { background: var(--copper); color: var(--ink); }
.btn-accent:hover { background: #D5793C; }
.btn-ghost-dark { border: 1px solid rgba(247,248,246,0.28); color: var(--page); background: transparent; }
.btn-ghost-dark:hover { border-color: rgba(247,248,246,0.5); }
.btn-outline { border: 1px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--chip-blue-bg); }

/* ── Cards ── */
.card { background: var(--card); border: 1px solid var(--border); border-radius: 8px; padding: 30px 32px; }
.card-cap-blue { border-top: 3px solid var(--primary); }
.card-cap-copper { border-top: 3px solid var(--copper); }
.card-left-copper { border-left: 3px solid var(--copper); }
.card .h3 { margin-bottom: 10px; }
.card p { color: var(--body); font-size: 15px; }

/* ── Step circles ── */
.step-circle { width: 32px; height: 32px; border-radius: 50%; background: var(--ink); color: var(--copper); font-family: 'Archivo', sans-serif; font-weight: 700; font-size: 15px; display: flex; align-items: center; justify-content: center; }

/* ── Chips ── */
.chip { display: inline-block; border-radius: 4px; font-family: 'IBM Plex Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; padding: 5px 10px; }
.chip-blue { background: var(--chip-blue-bg); color: var(--primary); }
.chip-copper { background: var(--chip-copper-bg); color: var(--copper-deep); }

/* ── Grids ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split-hero { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items: center; }

/* ── Stat strip ── */
.stat-strip { background: var(--card); border-bottom: 1px solid var(--border); display: grid; grid-template-columns: repeat(3, 1fr); }
.stat-cell { padding: 36px 56px; border-right: 1px solid var(--border); }
.stat-cell:last-child { border-right: 0; }
.stat-num { font-family: 'Archivo', sans-serif; font-weight: 700; font-size: 42px; letter-spacing: -0.03em; color: var(--primary); }
.stat-label { font-size: 14px; color: var(--muted); margin-top: 4px; }

/* ── Tables ── */
.htable { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.htable th { text-align: left; font-family: 'IBM Plex Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--muted); padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--band); font-weight: 500; }
.htable td { font-size: 15px; padding: 13px 20px; border-bottom: 1px solid var(--band); color: var(--body); }
.htable tr:last-child td { border-bottom: 0; }
.htable .num { text-align: right; font-variant-numeric: tabular-nums; }
.htable .total td { font-weight: 700; color: var(--ink); border-top: 2px solid var(--border); }

/* ── Code ── */
.code-block { background: var(--ink); border-radius: 8px; padding: 22px 24px; font-family: 'IBM Plex Mono', monospace; font-size: 12px; line-height: 1.75; color: var(--code-text); overflow-x: auto; }
.code-block .cm { color: var(--muted-dark); }

/* ── Forms ── */
.field { width: 100%; background: var(--card); border: 1px solid var(--input-border); border-radius: 6px; padding: 14px 16px; font-family: 'Libre Franklin', sans-serif; font-size: 15px; color: var(--ink); }
.field::placeholder { color: var(--placeholder); }
.field:focus { outline: 2px solid var(--primary); outline-offset: -1px; border-color: var(--primary); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

/* ── Footer ── */
.footer { background: var(--ink); color: var(--body-dark); }
.footer-inner { padding: 40px 56px; display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.footer a:hover { color: var(--page); }
.footer .links { display: flex; gap: 24px; font-size: 14px; flex-wrap: wrap; }
.footer .fine { padding: 0 56px 32px; font-size: 12.5px; color: var(--muted-dark); }

/* ── Hero image frame ── */
.hero-media { border-radius: 10px; border: 1px solid rgba(247,248,246,0.14); overflow: hidden; }
.hero-media img { width: 100%; height: 100%; object-fit: cover; }

/* ── Responsive ── */
@media (max-width: 1024px) {
  .px { padding-left: 28px; padding-right: 28px; }
  .nav-inner { padding: 16px 28px; }
  .stat-cell { padding: 28px; }
  .footer-inner { padding: 32px 28px; }
  .footer .fine { padding: 0 28px 28px; }
  .h1 { font-size: 48px; }
  .h2 { font-size: 34px; }
}
@media (max-width: 860px) {
  .nav-links { display: none; }
  .split, .split-hero, .grid-3, .grid-4, .form-grid { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .stat-strip { grid-template-columns: 1fr; }
  .stat-cell { border-right: 0; border-bottom: 1px solid var(--border); }
  .stat-cell:last-child { border-bottom: 0; }
  .section { padding-top: 52px; padding-bottom: 52px; }
  .h1 { font-size: 38px; }
  .h2 { font-size: 30px; }
}