/* ============================================================
   REI TOOLKIT — DESIGN SYSTEM (v3, "ReadMe" editorial-technical)
   Deep navy + electric blue, blueprint grid, monospace eyebrows.
   Inspired by readme.com. Light + dark themes.
   ============================================================ */

/* ---------- Tokens ---------- */
:root {
  /* Type scale */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: 1.875rem;
  --text-3xl: 2.5rem;
  --text-hero: clamp(2.6rem, 5.5vw, 4rem);

  --font-display: 'Clash Display', 'Satoshi', system-ui, sans-serif;
  --font-body: 'Satoshi', -apple-system, BlinkMacSystemFont, 'Inter', system-ui, sans-serif;
  --font-mono: 'Geist Mono', 'JetBrains Mono', ui-monospace, SFMono-Regular, monospace;

  /* Spacing */
  --s1: 0.25rem; --s2: 0.5rem; --s3: 0.75rem; --s4: 1rem;
  --s5: 1.5rem; --s6: 2rem; --s7: 3rem; --s8: 4.5rem; --s9: 6.5rem;

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --maxw: 1200px;
  --ease: cubic-bezier(.4, 0, .2, 1);
  --tr: 180ms var(--ease);

  /* Brand constants (shared across themes) */
  --navy: #001361;
  --navy-2: #021a7a;
  --electric: #0E2AF5;
  --sky: #4FACFF;
}

/* ---------- Light theme ---------- */
:root,
[data-theme="light"] {
  --bg: #ffffff;
  --bg-soft: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f7f8fa;
  --border: #e1e4e8;
  --border-strong: #d3d7dd;
  --ink: #1c1e23;
  --ink-soft: #4a4f58;
  --ink-faint: #79808b;
  --accent: #0E2AF5;
  --accent-strong: #0a1fc4;
  --accent-soft: #e9ecfe;
  --accent-ink: #ffffff;
  --pos: #149a48;
  --pos-soft: #e4f6ea;
  --neg: #d23b2c;
  --neg-soft: #fbe7e4;
  --warn: #b87410;
  --warn-soft: #fbf0dd;
  --shadow-sm: 0 1px 3px rgba(16, 24, 40, .05);
  --shadow: 0 6px 22px rgba(16, 24, 40, .08);
  --shadow-lg: 0 24px 60px rgba(16, 24, 40, .14);
  /* hero is always dark navy in both themes */
  --grid-line: rgba(255, 255, 255, .07);
  --corner-dot: var(--sky);
}

/* ---------- Dark theme ---------- */
[data-theme="dark"] {
  --bg: #060814;
  --bg-soft: #0b0f1f;
  --surface: #0e1326;
  --surface-2: #131a33;
  --border: #1f2845;
  --border-strong: #2d3961;
  --ink: #eef1fb;
  --ink-soft: #a8b1cd;
  --ink-faint: #71789a;
  --accent: #4FACFF;
  --accent-strong: #7cc2ff;
  --accent-soft: #11224a;
  --accent-ink: #04122e;
  --pos: #3ed27e;
  --pos-soft: #0f2a1d;
  --neg: #ff6f60;
  --neg-soft: #2a1816;
  --warn: #ffb454;
  --warn-soft: #2a2113;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, .5);
  --shadow: 0 8px 26px rgba(0, 0, 0, .55);
  --shadow-lg: 0 28px 70px rgba(0, 0, 0, .65);
  --grid-line: rgba(120, 160, 255, .08);
  --corner-dot: var(--sky);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
  font-size: var(--text-base);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  transition: background var(--tr), color var(--tr);
}
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.1; font-weight: 600; letter-spacing: -0.02em; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
svg { display: block; }
input { font-family: inherit; }

/* ---------- Layout primitives ---------- */
.content-wrapper { width: 100%; max-width: var(--maxw); margin: 0 auto; padding-inline: var(--s6); }
.section { padding-block: var(--s8); }
.section-tight { padding-block: var(--s7); }
.section-eyebrow {
  display: inline-block; font-family: var(--font-mono);
  font-size: var(--text-xs); font-weight: 500;
  letter-spacing: .1em; text-transform: uppercase; color: var(--accent);
}
.section-lead-title { font-size: var(--text-2xl); margin-top: var(--s3); }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.header {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--s4);
  padding: var(--s3) var(--s6);
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-brand { display: flex; align-items: center; gap: var(--s3); color: var(--ink); }
.header-logo { width: 38px; height: 38px; color: var(--accent); flex-shrink: 0; }
.header-title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); letter-spacing: -0.02em; }
.header-subtitle { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: .04em; color: var(--ink-faint); margin-top: 1px; }
.header-actions { display: flex; align-items: center; gap: var(--s2); }
.site-nav { display: flex; align-items: center; gap: var(--s1); }
.site-nav a {
  padding: var(--s2) var(--s3); border-radius: var(--radius-sm);
  font-size: var(--text-sm); font-weight: 500; color: var(--ink-soft);
  transition: color var(--tr), background var(--tr);
}
.site-nav a:hover { color: var(--ink); background: var(--bg-soft); }
.site-nav a[aria-current="page"] { color: var(--accent); background: var(--accent-soft); font-weight: 600; }

.theme-toggle, .nav-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: var(--radius-sm);
  border: 1px solid var(--border); background: var(--surface); color: var(--ink-soft);
  transition: color var(--tr), border-color var(--tr), background var(--tr);
}
.theme-toggle:hover, .nav-toggle:hover { color: var(--ink); border-color: var(--border-strong); }
.nav-toggle { display: none; }

.mobile-nav {
  display: none; flex-direction: column;
  padding: var(--s2) var(--s6) var(--s5);
  border-bottom: 1px solid var(--border); background: var(--bg);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: var(--s4) var(--s2); border-bottom: 1px solid var(--border);
  font-size: var(--text-base); font-weight: 500; color: var(--ink-soft);
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a[aria-current="page"] { color: var(--accent); font-weight: 600; }

@media (max-width: 860px) {
  .site-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-subtitle { display: none; }
}

/* ============================================================
   HERO  (notched navy "doc tab" card with blueprint grid)
   ============================================================ */
.hero { padding-block: var(--s7) var(--s6); }
.hero-card {
  position: relative;
  max-width: var(--maxw);
  margin: 0 auto;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(140% 120% at 85% -10%, rgba(79, 172, 255, .22) 0%, transparent 55%),
    linear-gradient(165deg, var(--navy-2) 0%, var(--navy) 70%);
  color: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  isolation: isolate;
}
/* blueprint grid overlay */
.hero-card::before {
  content: ""; position: absolute; inset: 0; z-index: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 38px 38px;
  mask-image: radial-gradient(120% 100% at 50% 0%, #000 35%, transparent 85%);
  -webkit-mask-image: radial-gradient(120% 100% at 50% 0%, #000 35%, transparent 85%);
  pointer-events: none;
}
/* top-center notch (file-tab) */
.hero-card::after {
  content: ""; position: absolute; top: -1px; left: 50%; transform: translateX(-50%);
  width: 132px; height: 24px; z-index: 1;
  background: var(--bg);
  border-radius: 0 0 16px 16px;
  border-bottom: 1px solid var(--border);
}
.hero-inner { position: relative; z-index: 2; padding: var(--s9) var(--s7) var(--s8); max-width: 820px; margin: 0 auto; text-align: center; }
.hero-inner .section-eyebrow { color: var(--sky); }
.hero h1 { font-size: var(--text-hero); margin-top: var(--s4); color: #fff; }
.hero-lede { font-size: var(--text-lg); color: rgba(238, 241, 251, .82); margin: var(--s5) auto 0; max-width: 60ch; }
.hero-lede strong { color: #fff; font-weight: 600; }
.hero-stats { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s7); margin-top: var(--s6); }
.hero-stat-num { font-family: var(--font-display); font-weight: 600; font-size: var(--text-xl); color: #fff; }
.hero-stat-label { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: .03em; color: rgba(168, 177, 205, .85); margin-top: 2px; }
.hero-cta-row { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--s3); margin-top: var(--s6); }
/* corner selection dots (Figma handles motif) */
.corner-dots::before, .corner-dots::after,
.corner-dots > span { display: none; }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--s2);
  padding: var(--s3) var(--s5); border-radius: var(--radius-pill);
  font-size: var(--text-sm); font-weight: 600; border: 1px solid transparent;
  transition: transform var(--tr), background var(--tr), border-color var(--tr), box-shadow var(--tr), color var(--tr);
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent); color: var(--accent-ink); box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: var(--accent-strong); box-shadow: var(--shadow); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--bg-soft); }
.btn-block { width: 100%; }
/* hero buttons sit on navy */
.hero .btn-primary { background: #fff; color: var(--navy); }
.hero .btn-primary:hover { background: #eef1fb; }
.hero .btn-ghost { color: #fff; border-color: rgba(255, 255, 255, .35); }
.hero .btn-ghost:hover { background: rgba(255, 255, 255, .1); }

/* ============================================================
   CARDS / PANELS
   ============================================================ */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-sm);
}
.panel { padding: var(--s6); }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: var(--s3); margin-bottom: var(--s5); }
.panel-title { display: flex; align-items: center; gap: var(--s3); font-family: var(--font-display); font-size: var(--text-xl); font-weight: 600; }
.panel-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 9px;
  background: var(--accent-soft); color: var(--accent);
}
.panel-step { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-faint); }
.panel + .panel-divider { border-top: 1px solid var(--border); }

/* ============================================================
   CALCULATOR GRID
   ============================================================ */
.calc-layout { display: grid; grid-template-columns: 1fr; gap: var(--s5); align-items: start; }
@media (min-width: 940px) {
  .calc-layout { grid-template-columns: minmax(0, 1.55fr) minmax(320px, 1fr); }
  .calc-summary-col { position: sticky; top: 88px; }
}

/* ---------- Field groups inside a card ---------- */
.field-card { padding: var(--s6); }
.field-card + .field-card { border-top: 1px solid var(--border); }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--s4) var(--s5); }
@media (max-width: 560px) { .field-grid { grid-template-columns: 1fr; } }
.field-grid .full { grid-column: 1 / -1; }

.field { display: flex; flex-direction: column; gap: var(--s2); }
.field label { font-size: var(--text-sm); font-weight: 600; color: var(--ink); }
.field-hint { font-size: var(--text-xs); color: var(--ink-faint); }
.input-wrap { position: relative; display: flex; align-items: center; }
.input-prefix, .input-suffix {
  position: absolute; color: var(--ink-faint); font-size: var(--text-sm); font-weight: 600; pointer-events: none;
}
.input-prefix { left: var(--s4); }
.input-suffix { right: var(--s4); }
.input-wrap input {
  width: 100%; padding: var(--s3) var(--s4); border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong); background: var(--surface-2); color: var(--ink);
  font-size: var(--text-base); font-weight: 500; transition: border-color var(--tr), box-shadow var(--tr), background var(--tr);
}
.input-wrap.has-prefix input { padding-left: 2.1rem; }
.input-wrap.has-suffix input { padding-right: 2.6rem; }
.input-wrap input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); background: var(--surface); }
.input-wrap input.invalid { border-color: var(--neg); box-shadow: 0 0 0 3px var(--neg-soft); }
.field-error { display: none; font-size: var(--text-xs); color: var(--neg); font-weight: 500; }

.calc-actions { display: flex; gap: var(--s3); padding: var(--s5) var(--s6) var(--s6); }

/* ============================================================
   SUMMARY / RESULTS
   ============================================================ */
.summary { padding: var(--s6); }
.summary-title { display: flex; align-items: center; gap: var(--s3); font-family: var(--font-display); font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--s5); }
.result-hero {
  position: relative; overflow: hidden;
  border-radius: var(--radius); padding: var(--s5);
  background: linear-gradient(160deg, var(--navy-2), var(--navy));
  border: 1px solid var(--navy-2);
  color: #fff;
}
.result-hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 26px 26px; pointer-events: none;
  mask-image: radial-gradient(100% 100% at 100% 0%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(100% 100% at 100% 0%, #000 0%, transparent 70%);
}
.result-hero-label { position: relative; font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--sky); }
.result-hero-value { position: relative; font-family: var(--font-display); font-weight: 600; font-size: var(--text-3xl); letter-spacing: -0.02em; margin-top: var(--s1); line-height: 1; color: #fff; }
.result-hero-value.positive { color: #4ade94; }
.result-hero-value.negative { color: #ff8478; }
.result-hero-value.neutral { color: #ffc06b; }
.result-hero-badge {
  position: relative;
  display: inline-flex; align-items: center; gap: var(--s1); margin-top: var(--s3);
  padding: var(--s1) var(--s3); border-radius: var(--radius-pill);
  font-size: var(--text-xs); font-weight: 600;
}
.badge-success { background: rgba(62, 210, 126, .16); color: #6ff0a8; }
.badge-warning { background: rgba(255, 180, 84, .16); color: #ffc879; }

.result-rows { margin-top: var(--s5); display: flex; flex-direction: column; }
.result-row {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s4);
  padding: var(--s3) 0; border-top: 1px solid var(--border);
}
.result-row:first-child { border-top: none; }
.result-row.subhead { padding-top: var(--s4); }
.result-row.subhead .result-label { font-family: var(--font-mono); font-weight: 600; color: var(--ink); font-size: var(--text-xs); text-transform: uppercase; letter-spacing: .06em; }
.result-label { font-size: var(--text-sm); color: var(--ink-soft); }
.result-value { font-size: var(--text-base); font-weight: 600; color: var(--ink); font-variant-numeric: tabular-nums; }
.result-value.positive { color: var(--pos); }
.result-value.negative { color: var(--neg); }
.result-value.neutral { color: var(--warn); }
.result-note { font-size: var(--text-xs); color: var(--ink-faint); margin-top: var(--s4); line-height: 1.5; }

/* ============================================================
   RESOURCES (affiliate-ready)
   ============================================================ */
.resources { margin-top: var(--s5); padding: var(--s5); border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface-2); }
.resources-title { display: flex; align-items: center; gap: var(--s2); font-weight: 600; font-size: var(--text-sm); font-family: var(--font-display); }
.resources-sub { font-size: var(--text-xs); color: var(--ink-faint); margin-top: var(--s1); }
.resources-list { margin-top: var(--s4); display: flex; flex-direction: column; gap: var(--s3); }
.resources-list a { font-size: var(--text-sm); font-weight: 500; color: var(--accent-strong); display: inline-flex; gap: var(--s2); }
.resources-list a:hover { text-decoration: underline; }
.resources-list a::before { content: "→"; color: var(--ink-faint); }
.resources-disclaimer { font-size: var(--text-xs); color: var(--ink-faint); margin-top: var(--s4); line-height: 1.5; }

/* ============================================================
   FORMULAS SECTION
   ============================================================ */
.formula-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: var(--s4); margin-top: var(--s5); }
.formula-card { padding: var(--s5); border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.formula-step { font-size: var(--text-sm); font-weight: 600; color: var(--ink); font-family: var(--font-display); }
.formula-eq { display: block; margin: var(--s3) 0; padding: var(--s3); border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--border); font-family: var(--font-mono); font-size: var(--text-xs); color: var(--accent-strong); overflow-x: auto; }
.formula-desc { font-size: var(--text-sm); color: var(--ink-soft); }

/* ============================================================
   TOOL GRID (hub + cross-links)
   ============================================================ */
.tool-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: var(--s4); }
.tool-card {
  position: relative;
  display: flex; flex-direction: column; gap: var(--s2);
  padding: var(--s5); border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--surface);
  box-shadow: var(--shadow-sm); color: var(--ink);
  transition: transform var(--tr), border-color var(--tr), box-shadow var(--tr);
}
.tool-card:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--accent) 45%, var(--border)); box-shadow: var(--shadow); }
/* corner selection dots motif */
.tool-card::before, .tool-card::after {
  content: ""; position: absolute; width: 6px; height: 6px; border-radius: 2px;
  background: var(--corner-dot); opacity: 0; transition: opacity var(--tr);
}
.tool-card::before { top: -3px; left: -3px; }
.tool-card::after { bottom: -3px; right: -3px; }
.tool-card:hover::before, .tool-card:hover::after { opacity: 1; }
.tool-card-icon { width: 40px; height: 40px; display: inline-flex; align-items: center; justify-content: center; border-radius: 10px; background: var(--accent-soft); color: var(--accent); margin-bottom: var(--s2); }
.tool-card-title { font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); }
.tool-card-desc { font-size: var(--text-sm); color: var(--ink-soft); }
.tool-card-cta { margin-top: var(--s2); font-size: var(--text-sm); font-weight: 600; color: var(--accent-strong); display: inline-flex; gap: var(--s2); }
.tool-card-cta::after { content: "→"; transition: transform var(--tr); }
.tool-card:hover .tool-card-cta::after { transform: translateX(3px); }

/* ---------- Promo slot (course / affiliate) ---------- */
.promo-slot {
  margin-top: var(--s6); padding: var(--s7); border-radius: var(--radius-lg);
  border: 1px dashed var(--border-strong); background: var(--surface-2);
  display: flex; flex-direction: column; align-items: flex-start; gap: var(--s3);
}
.promo-slot .section-eyebrow { color: var(--ink-faint); }
.promo-slot h3 { font-size: var(--text-xl); }
.promo-slot p { color: var(--ink-soft); max-width: 60ch; }

/* ============================================================
   AD SLOTS (placeholder containers — drop ad code in later)
   ============================================================ */
.ad-slot {
  position: relative;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  text-align: center; gap: var(--s1);
  border: 1px dashed var(--border-strong); border-radius: var(--radius);
  background: var(--surface-2); color: var(--ink-faint);
  overflow: hidden;
}
.ad-slot::after {
  content: "Ad space \2014 placeholder"; font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: .08em; text-transform: uppercase;
}
.ad-slot .ad-label {
  font-family: var(--font-mono); font-size: 0.62rem; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-faint); opacity: .7;
}
/* When a real ad <ins> or iframe is dropped in, hide the placeholder text */
.ad-slot:has(ins)::after, .ad-slot:has(iframe)::after, .ad-slot:has(img)::after { content: ""; }
.ad-slot:has(ins) .ad-label, .ad-slot:has(iframe) .ad-label, .ad-slot:has(img) .ad-label { display: none; }
.ad-slot:has(ins), .ad-slot:has(iframe), .ad-slot:has(img) { border-style: solid; border-color: var(--border); }

/* leaderboard: full-width banner (~728x90 / responsive) */
.ad-leaderboard { min-height: 96px; margin: var(--s7) auto 0; max-width: var(--maxw); }
.ad-leaderboard-wrap { padding-inline: var(--s6); }
/* inline rectangle in calculator sidebar (~300x250) */
.ad-rectangle { min-height: 250px; margin-top: var(--s5); }
/* in-content banner between sections */
.ad-inline { min-height: 110px; margin-top: var(--s6); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { border-top: 1px solid var(--border); margin-top: var(--s9); background: var(--bg-soft); }
.site-footer-inner { max-width: var(--maxw); margin: 0 auto; padding: var(--s7) var(--s6); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: var(--s6); }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; gap: var(--s5); } }
.site-footer-brand { display: flex; align-items: center; gap: var(--s2); font-family: var(--font-display); font-weight: 600; font-size: var(--text-lg); }
.site-footer-brand svg { width: 28px; height: 28px; color: var(--accent); }
.site-footer-disclaimer { font-size: var(--text-xs); color: var(--ink-faint); margin-top: var(--s3); max-width: 52ch; line-height: 1.6; }
.footer-links { display: flex; flex-direction: column; gap: var(--s2); }
.footer-links-title { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-faint); margin-bottom: var(--s2); }
.footer-links a { font-size: var(--text-sm); color: var(--ink-soft); transition: color var(--tr); }
.footer-links a:hover { color: var(--accent); }

/* ---------- Utilities ---------- */
.text-center { text-align: center; }
.mt-6 { margin-top: var(--s6); }
.divider-soft { height: 1px; background: var(--border); border: none; margin: var(--s7) 0; }