/* ========== Theme tokens ========== */
:root,
[data-theme="ivory"] {
  --bg: oklch(0.975 0.008 75);
  --bg-soft: oklch(0.955 0.012 75);
  --bg-elev: oklch(0.99 0.005 75);
  --rule: oklch(0.86 0.012 75);
  --rule-soft: oklch(0.91 0.01 75);
  --ink: oklch(0.20 0.02 260);
  --ink-soft: oklch(0.42 0.018 260);
  --ink-mute: oklch(0.58 0.014 260);
  --accent: oklch(0.45 0.13 28);
  --accent-soft: oklch(0.92 0.04 28);
  --on-accent: oklch(0.985 0.003 75);
  --selection: oklch(0.88 0.06 28);
  --shadow: 0 1px 0 oklch(0.86 0.012 75);
}

[data-theme="mono"] {
  --bg: oklch(0.985 0 0);
  --bg-soft: oklch(0.96 0 0);
  --bg-elev: oklch(1 0 0);
  --rule: oklch(0.85 0 0);
  --rule-soft: oklch(0.92 0 0);
  --ink: oklch(0.16 0 0);
  --ink-soft: oklch(0.42 0 0);
  --ink-mute: oklch(0.58 0 0);
  --accent: oklch(0.16 0 0);
  --accent-soft: oklch(0.92 0 0);
  --on-accent: oklch(0.985 0 0);
  --selection: oklch(0.88 0 0);
  --shadow: 0 1px 0 oklch(0.85 0 0);
}

[data-theme="navy"] {
  --bg: oklch(0.97 0.012 230);
  --bg-soft: oklch(0.945 0.018 230);
  --bg-elev: oklch(0.99 0.008 230);
  --rule: oklch(0.85 0.018 230);
  --rule-soft: oklch(0.91 0.014 230);
  --ink: oklch(0.22 0.06 255);
  --ink-soft: oklch(0.42 0.04 255);
  --ink-mute: oklch(0.58 0.025 255);
  --accent: oklch(0.62 0.13 75);
  --accent-soft: oklch(0.92 0.04 75);
  --on-accent: oklch(0.16 0.04 255);
  --selection: oklch(0.88 0.06 75);
  --shadow: 0 1px 0 oklch(0.85 0.018 230);
}

/* dark variants */
[data-theme="ivory"][data-mode="dark"] {
  --bg: oklch(0.16 0.012 260);
  --bg-soft: oklch(0.20 0.014 260);
  --bg-elev: oklch(0.22 0.014 260);
  --rule: oklch(0.30 0.014 260);
  --rule-soft: oklch(0.26 0.014 260);
  --ink: oklch(0.96 0.008 75);
  --ink-soft: oklch(0.78 0.012 75);
  --ink-mute: oklch(0.62 0.012 75);
  --accent: oklch(0.78 0.12 28);
  --accent-soft: oklch(0.30 0.05 28);
  --on-accent: oklch(0.16 0.012 260);
  --selection: oklch(0.45 0.13 28);
  --shadow: 0 1px 0 oklch(0.30 0.014 260);
}
[data-theme="mono"][data-mode="dark"] {
  --bg: oklch(0.14 0 0);
  --bg-soft: oklch(0.18 0 0);
  --bg-elev: oklch(0.22 0 0);
  --rule: oklch(0.30 0 0);
  --rule-soft: oklch(0.24 0 0);
  --ink: oklch(0.97 0 0);
  --ink-soft: oklch(0.78 0 0);
  --ink-mute: oklch(0.60 0 0);
  --accent: oklch(0.97 0 0);
  --accent-soft: oklch(0.30 0 0);
  --on-accent: oklch(0.14 0 0);
  --selection: oklch(0.40 0 0);
  --shadow: 0 1px 0 oklch(0.30 0 0);
}
[data-theme="navy"][data-mode="dark"] {
  --bg: oklch(0.18 0.04 255);
  --bg-soft: oklch(0.22 0.05 255);
  --bg-elev: oklch(0.25 0.05 255);
  --rule: oklch(0.34 0.04 255);
  --rule-soft: oklch(0.28 0.04 255);
  --ink: oklch(0.96 0.012 75);
  --ink-soft: oklch(0.80 0.02 75);
  --ink-mute: oklch(0.62 0.02 75);
  --accent: oklch(0.78 0.12 75);
  --accent-soft: oklch(0.32 0.06 75);
  --on-accent: oklch(0.18 0.04 255);
  --selection: oklch(0.48 0.10 75);
  --shadow: 0 1px 0 oklch(0.34 0.04 255);
}

/* ========== Reset & base ========== */
*,
*::before,
*::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}
body {
  font-family: "Inter Tight", "Inter", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--bg);
  font-feature-settings: "ss01", "cv11";
  transition: background-color 240ms ease, color 240ms ease;
}
::selection { background: var(--selection); color: var(--ink); }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img { max-width: 100%; display: block; }

.font-serif { font-family: "Fraunces", "Iowan Old Style", "Georgia", serif; font-optical-sizing: auto; font-variation-settings: "SOFT" 30, "WONK" 0; }
.font-mono  { font-family: "JetBrains Mono", "SF Mono", "Menlo", monospace; font-feature-settings: "ss01"; }

[data-theme="mono"] .font-serif { font-family: "Inter Tight", "Inter", system-ui, sans-serif; letter-spacing: -0.02em; }

/* ========== Layout ========== */
.wrap { max-width: 1320px; margin: 0 auto; padding: 0 32px; }
@media (max-width: 720px) { .wrap { padding: 0 20px; } }

.eyebrow {
  font-family: "JetBrains Mono", "SF Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.eyebrow::before {
  content: "";
  display: inline-block;
  width: 18px; height: 1px; background: var(--ink-mute);
}

.h-display {
  font-family: "Fraunces", "Iowan Old Style", "Georgia", serif;
  font-weight: 350;
  font-variation-settings: "SOFT" 30, "WONK" 0, "opsz" 144;
  letter-spacing: -0.025em;
  line-height: 0.98;
  color: var(--ink);
  margin: 0;
}
[data-theme="mono"] .h-display { font-family: "Inter Tight", system-ui, sans-serif; font-weight: 500; letter-spacing: -0.04em; }

.lede {
  font-family: "Fraunces", serif;
  font-weight: 300;
  font-style: italic;
  font-variation-settings: "SOFT" 100, "opsz" 32;
  font-size: 22px;
  line-height: 1.4;
  color: var(--ink-soft);
  letter-spacing: -0.01em;
}
[data-theme="mono"] .lede { font-family: "Inter Tight", system-ui, sans-serif; font-style: normal; }

.rule { height: 1px; background: var(--rule); width: 100%; }
.rule-soft { height: 1px; background: var(--rule-soft); width: 100%; }

/* ========== Buttons ========== */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  border-radius: 0;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn .arrow { transition: transform 220ms cubic-bezier(.2,.8,.2,1); }
.btn:hover .arrow { transform: translateX(3px); }
.btn-primary {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule);
}
.btn-secondary:hover { border-color: var(--ink); }
.btn-ghost {
  padding: 8px 0;
  border-bottom: 1px solid var(--ink);
  color: var(--ink);
}
.btn-ghost:hover { color: var(--accent); border-color: var(--accent); }

/* ========== Header ========== */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklch, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms ease, background-color 240ms ease;
}
.site-header.is-scrolled { border-bottom-color: var(--rule); }
.site-header .wrap { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 32px; height: 76px; }

.brand {
  display: flex; align-items: baseline; gap: 12px;
  font-family: "Fraunces", serif;
  font-weight: 400;
  font-variation-settings: "SOFT" 30, "opsz" 14;
  letter-spacing: -0.01em;
  font-size: 19px;
  color: var(--ink);
}
.brand .brand-mark {
  display: inline-grid; place-items: center;
  width: 32px; height: 32px;
  border: 1px solid var(--ink);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0;
  color: var(--ink);
  align-self: center;
  font-weight: 500;
}
.brand-stack { display: flex; flex-direction: column; line-height: 1; gap: 2px; }
.brand-name { font-size: 18px; }
.brand-tag { font-family: "JetBrains Mono", monospace; font-size: 9.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--ink-mute); font-weight: 400; }
[data-theme="mono"] .brand { font-family: "Inter Tight", system-ui, sans-serif; font-weight: 500; }

.nav-list {
  display: flex; gap: 0; list-style: none; margin: 0; padding: 0;
  justify-self: center;
}
.nav-list a {
  display: inline-block;
  padding: 10px 14px;
  font-size: 13.5px;
  color: var(--ink-soft);
  position: relative;
  transition: color 180ms ease;
}
.nav-list a:hover { color: var(--ink); }
.nav-list a.active { color: var(--ink); }
.nav-list a.active::after {
  content: ""; position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 1px; background: var(--accent);
}

.header-tools { display: flex; align-items: center; gap: 6px; }
.icon-btn {
  width: 38px; height: 38px;
  display: inline-grid; place-items: center;
  border: 1px solid transparent;
  color: var(--ink-soft);
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}
.icon-btn:hover { color: var(--ink); border-color: var(--rule); }
.lang-toggle {
  display: inline-flex; align-items: center; gap: 0;
  border: 1px solid var(--rule);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
}
.lang-toggle button {
  padding: 8px 11px;
  color: var(--ink-mute);
  transition: background 180ms ease, color 180ms ease;
}
.lang-toggle button.active { background: var(--ink); color: var(--bg); }
.lang-toggle button:not(.active):hover { color: var(--ink); }

.menu-toggle { display: none; }
@media (max-width: 1100px) {
  .nav-list { display: none; }
  .site-header .wrap { grid-template-columns: auto 1fr auto; }
  .menu-toggle { display: inline-grid; }
}

.mobile-nav {
  display: none;
  border-top: 1px solid var(--rule);
  background: var(--bg);
}
.mobile-nav.open { display: block; }
.mobile-nav ul { list-style: none; margin: 0; padding: 8px 0; }
.mobile-nav a { display: block; padding: 14px 32px; font-size: 16px; color: var(--ink-soft); border-bottom: 1px solid var(--rule-soft); }
.mobile-nav a:hover, .mobile-nav a.active { color: var(--ink); }

/* ========== Page transitions ========== */
.page-root {
  animation: pageEnter 540ms cubic-bezier(.2,.7,.2,1) both;
}
@keyframes pageEnter {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ========== Reveal on scroll ========== */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity 700ms ease, transform 700ms cubic-bezier(.2,.7,.2,1); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }
.reveal[data-delay="4"] { transition-delay: 320ms; }

/* ========== Section ========== */
.section { padding: 96px 0; }
@media (max-width: 720px) { .section { padding: 64px 0; } }
.section-tight { padding: 64px 0; }

/* ========== Hero ========== */
.hero {
  padding: 88px 0 72px;
  border-bottom: 1px solid var(--rule);
  position: relative;
}
.hero-meta {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: end;
  padding-bottom: 56px;
}
@media (max-width: 900px) { .hero-meta { grid-template-columns: 1fr; gap: 18px; padding-bottom: 36px; } }
.hero-meta .meta-item { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--ink-mute); }
.hero-meta .meta-item .v { display: block; color: var(--ink-soft); margin-top: 6px; letter-spacing: 0.04em; }
.hero-meta .meta-center { text-align: center; }
.hero-meta .meta-right { text-align: right; }

.hero-name {
  font-size: clamp(72px, 13vw, 220px);
  margin: 0;
}
.hero-name .row { display: block; }
.hero-name .ital { font-style: italic; font-variation-settings: "SOFT" 100, "opsz" 144, "WONK" 1; color: var(--accent); }
[data-theme="mono"] .hero-name .ital { color: var(--ink); font-style: normal; text-decoration: underline; text-decoration-thickness: 0.06em; text-underline-offset: 0.12em; }

.hero-foot {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 56px;
  padding-top: 56px;
  border-top: 1px solid var(--rule);
  margin-top: 64px;
  align-items: start;
}
@media (max-width: 900px) { .hero-foot { grid-template-columns: 1fr; gap: 28px; } }

.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 28px; }

/* ========== Cards / list ========== */
.editorial-list {
  border-top: 1px solid var(--rule);
}
.editorial-list .row {
  display: grid;
  grid-template-columns: 80px 1.4fr 2fr auto;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
  transition: padding 280ms ease;
}
.editorial-list a.row { color: var(--ink); }
.editorial-list a.row:hover { padding-left: 16px; }
.editorial-list a.row:hover .arrow-r { transform: translateX(6px); color: var(--accent); }
.editorial-list .num { font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--ink-mute); letter-spacing: 0.06em; }
.editorial-list .ttl { font-family: "Fraunces", serif; font-weight: 350; font-size: 26px; letter-spacing: -0.02em; line-height: 1.1; }
[data-theme="mono"] .editorial-list .ttl { font-family: "Inter Tight", system-ui, sans-serif; font-weight: 500; }
.editorial-list .desc { font-size: 14px; color: var(--ink-soft); line-height: 1.55; }
.editorial-list .arrow-r { transition: transform 240ms cubic-bezier(.2,.7,.2,1), color 240ms ease; color: var(--ink-mute); }
@media (max-width: 900px) {
  .editorial-list .row { grid-template-columns: 60px 1fr; gap: 20px; }
  .editorial-list .desc, .editorial-list .arrow-r { grid-column: 2; }
}

.note-card {
  border: 1px solid var(--rule);
  background: var(--bg-elev);
  padding: 32px;
  position: relative;
}
.note-card h3 { font-family: "Fraunces", serif; font-weight: 350; font-size: 22px; letter-spacing: -0.015em; margin: 16px 0 0; }
[data-theme="mono"] .note-card h3 { font-family: "Inter Tight", system-ui, sans-serif; font-weight: 500; }
.note-card p { font-size: 14px; line-height: 1.6; color: var(--ink-soft); margin: 12px 0 0; }
.note-card .num { font-family: "JetBrains Mono", monospace; font-size: 11px; color: var(--accent); letter-spacing: 0.12em; }

/* ========== Big quote ========== */
.pull-quote {
  font-family: "Fraunces", serif;
  font-weight: 300;
  font-style: italic;
  font-variation-settings: "SOFT" 100, "opsz" 144;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--ink);
}
[data-theme="mono"] .pull-quote { font-family: "Inter Tight", system-ui, sans-serif; font-style: normal; font-weight: 400; }

/* ========== Process numbers ========== */
.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--rule);
}
@media (max-width: 900px) { .process-grid { grid-template-columns: 1fr; } }
.process-grid .step {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  padding: 28px;
  min-height: 220px;
  display: flex; flex-direction: column;
  background: var(--bg);
  transition: background 240ms ease;
}
.process-grid .step:last-child { border-right: 0; }
@media (max-width: 900px) { .process-grid .step { border-right: 0; } }
.process-grid .step:hover { background: var(--bg-soft); }
.process-grid .step .n {
  font-family: "Fraunces", serif;
  font-style: italic;
  font-variation-settings: "SOFT" 100, "opsz" 144, "WONK" 1;
  font-size: 64px;
  line-height: 0.9;
  color: var(--accent);
  letter-spacing: -0.04em;
  font-weight: 300;
}
[data-theme="mono"] .process-grid .step .n { font-family: "JetBrains Mono", monospace; font-style: normal; font-size: 32px; color: var(--ink); }
.process-grid .step h4 { font-family: "Fraunces", serif; font-weight: 350; font-size: 22px; letter-spacing: -0.015em; margin: auto 0 12px; }
[data-theme="mono"] .process-grid .step h4 { font-family: "Inter Tight", system-ui, sans-serif; font-weight: 500; }
.process-grid .step p { font-size: 14px; line-height: 1.55; color: var(--ink-soft); margin: 0; }

/* ========== Footer ========== */
.site-footer {
  border-top: 1px solid var(--rule);
  padding: 80px 0 40px;
  margin-top: 80px;
  background: var(--bg-soft);
}
.site-footer .grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 56px;
}
@media (max-width: 900px) { .site-footer .grid { grid-template-columns: 1fr 1fr; gap: 36px; } }
.site-footer h4 { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-mute); margin: 0 0 18px; font-weight: 500; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { padding: 6px 0; font-size: 14px; color: var(--ink-soft); }
.site-footer li a:hover { color: var(--ink); }
.site-footer .colophon {
  margin-top: 56px; padding-top: 28px;
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
  font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.06em; color: var(--ink-mute);
}

/* ========== Forms ========== */
.field { display: block; margin-bottom: 24px; }
.field label {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 8px;
}
.field .hint { font-size: 12px; color: var(--ink-mute); margin-top: 6px; font-style: italic; font-family: "Fraunces", serif; }
[data-theme="mono"] .field .hint { font-family: "Inter Tight", system-ui, sans-serif; font-style: normal; }
.field input,
.field select,
.field textarea {
  width: 100%;
  padding: 12px 0;
  border: 0;
  border-bottom: 1px solid var(--rule);
  background: transparent;
  color: var(--ink);
  font-family: inherit;
  font-size: 16px;
  outline: none;
  border-radius: 0;
  transition: border-color 200ms ease;
}
.field textarea { resize: vertical; min-height: 96px; padding: 12px 0; line-height: 1.5; }
.field select { cursor: pointer; appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--ink-mute) 50%), linear-gradient(135deg, var(--ink-mute) 50%, transparent 50%); background-position: calc(100% - 14px) 18px, calc(100% - 9px) 18px; background-size: 5px 5px; background-repeat: no-repeat; padding-right: 28px; }
.field input:focus,
.field select:focus,
.field textarea:focus { border-bottom-color: var(--ink); }
.field.has-error input,
.field.has-error select,
.field.has-error textarea { border-bottom-color: var(--accent); }
.field .err { color: var(--accent); font-size: 12px; margin-top: 6px; font-family: "JetBrains Mono", monospace; letter-spacing: 0.04em; }

/* ========== Calculator ========== */
.calc-grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 64px; align-items: start; }
@media (max-width: 1000px) { .calc-grid { grid-template-columns: 1fr; gap: 32px; } }
.calc-block { padding: 28px 0; border-bottom: 1px solid var(--rule); }
.calc-block:first-child { padding-top: 0; }
.calc-block h3 { font-family: "Fraunces", serif; font-weight: 350; font-size: 22px; letter-spacing: -0.015em; margin: 0 0 18px; }
[data-theme="mono"] .calc-block h3 { font-family: "Inter Tight", system-ui, sans-serif; font-weight: 500; }
.option-grid { display: grid; gap: 8px; }
.option-grid.cols-2 { grid-template-columns: 1fr 1fr; }
.option-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 600px) { .option-grid.cols-4 { grid-template-columns: 1fr 1fr; } }
.option {
  border: 1px solid var(--rule);
  background: var(--bg);
  padding: 14px 16px;
  font-size: 14px;
  text-align: left;
  color: var(--ink-soft);
  transition: border-color 180ms, background 180ms, color 180ms;
  display: flex; align-items: center; gap: 12px;
}
.option .dot { width: 8px; height: 8px; border-radius: 50%; border: 1px solid var(--rule); flex: none; transition: all 180ms; }
.option:hover { border-color: var(--ink-soft); color: var(--ink); }
.option.selected { border-color: var(--ink); color: var(--ink); background: var(--bg-elev); }
.option.selected .dot { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.result-card {
  border: 1px solid var(--rule);
  background: var(--bg-elev);
}
.result-card .head {
  background: var(--ink);
  color: var(--bg);
  padding: 28px;
}
.result-card .head .label { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; opacity: 0.6; }
.result-card .head .amt { font-family: "Fraunces", serif; font-weight: 350; font-variation-settings: "opsz" 144; font-size: 44px; letter-spacing: -0.02em; margin-top: 10px; line-height: 1; }
[data-theme="mono"] .result-card .head .amt { font-family: "JetBrains Mono", monospace; font-weight: 500; font-size: 36px; }
.result-card .head .sub { font-family: "JetBrains Mono", monospace; font-size: 11px; opacity: 0.7; margin-top: 12px; letter-spacing: 0.06em; }

.result-card .scenarios { padding: 8px 28px; }
.result-card .scenario { padding: 18px 0; border-bottom: 1px dashed var(--rule); }
.result-card .scenario:last-child { border-bottom: 0; }
.result-card .scenario .name { font-size: 13px; color: var(--ink); font-weight: 500; margin-bottom: 8px; }
.result-card .scenario .grid { display: grid; grid-template-columns: 1fr auto; row-gap: 4px; column-gap: 16px; font-family: "JetBrains Mono", monospace; font-size: 12px; color: var(--ink-mute); }
.result-card .scenario .grid .v { color: var(--ink); font-feature-settings: "tnum"; }
.result-card .scenario .grid .net { color: var(--accent); font-weight: 600; }

.result-card .explain {
  padding: 28px;
  border-top: 1px solid var(--rule);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-soft);
  white-space: pre-line;
}
.result-card .explain .heading { font-family: "JetBrains Mono", monospace; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--ink-mute); margin: 16px 0 8px; }

.result-empty {
  border: 1px dashed var(--rule);
  padding: 48px 28px;
  text-align: center;
  color: var(--ink-mute);
  font-family: "Fraunces", serif;
  font-style: italic;
  font-size: 18px;
}
[data-theme="mono"] .result-empty { font-family: "Inter Tight", system-ui, sans-serif; font-style: normal; }

/* ========== Placeholder image ========== */
.ph-image {
  background: repeating-linear-gradient(45deg, var(--bg-soft) 0 8px, var(--bg-elev) 8px 16px);
  border: 1px solid var(--rule);
  position: relative;
  display: grid; place-items: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-align: center;
}
.ph-image span { background: var(--bg); padding: 6px 12px; }

/* ========== TOC (sticky) ========== */
.toc {
  position: sticky;
  top: 100px;
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.toc h5 { color: var(--ink-mute); font-weight: 500; margin: 0 0 18px; }
.toc ol { list-style: none; margin: 0; padding: 0; }
.toc li { padding: 8px 0; border-left: 1px solid var(--rule); padding-left: 16px; transition: border-color 200ms, color 200ms; cursor: pointer; color: var(--ink-mute); }
.toc li:hover { color: var(--ink); }
.toc li.active { border-left-color: var(--accent); color: var(--ink); }

/* ========== Tag chip ========== */
.chip {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--rule);
  font-family: "JetBrains Mono", monospace;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

/* Tweaks panel-specific overrides (panel uses its own root inside iframe parent) */

/* Misc utility */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
@media (max-width: 800px) { .grid-2 { grid-template-columns: 1fr; gap: 32px; } }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 900px) { .grid-3 { grid-template-columns: 1fr; } }

.text-soft { color: var(--ink-soft); }
.text-mute { color: var(--ink-mute); }

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translate(-50%, 32px);
  opacity: 0;
  background: var(--ink);
  color: var(--bg);
  padding: 14px 22px;
  font-size: 13px;
  z-index: 9999;
  pointer-events: none;
  transition: transform 320ms cubic-bezier(.2,.8,.2,1), opacity 320ms ease;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0.06em;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }

/* =====================================================
   ========== Mobile responsive pass ==================
   Pure additive — desktop layout unchanged.
   Targets phones (<= 720px) primarily; small tablet
   adjustments where overflow risks exist.
   ===================================================== */

/* prevent any rogue horizontal scroll */
html, body { overflow-x: hidden; max-width: 100%; }
body { -webkit-text-size-adjust: 100%; }

/* break long words/urls instead of forcing horizontal scroll */
.h-display, .lede, .hero-name, .editorial-list .ttl,
.note-card h3, .calc-block h3,
.process-grid .step h4, .quote {
  overflow-wrap: anywhere;
  word-break: break-word;
  hyphens: auto;
}

/* allow grid/flex children to shrink below intrinsic size */
.wrap > *, .calc-grid > *, .grid-2 > *, .grid-3 > *,
.hero-foot > *, .site-footer .grid > *, .editorial-list .row > *,
.process-grid .step > * {
  min-width: 0;
}

/* tablet & below */
@media (max-width: 900px) {
  .hero { padding: 56px 0 48px; }
  .hero-name { font-size: clamp(44px, 14vw, 110px); line-height: 1; }
  .hero-foot { padding-top: 36px; }
  .hero-quote, .quote { font-size: clamp(28px, 5.6vw, 44px); }
  .result-card .head { padding: 22px; }
  .result-card .head .amt { font-size: clamp(28px, 7.5vw, 40px); }
  .result-card .scenarios { padding: 6px 22px; }
  .result-card .explain { padding: 22px; }
  .editorial-list .ttl { font-size: 22px; }
}

/* phones */
@media (max-width: 720px) {
  /* layout / wrap */
  .wrap { padding: 0 16px; }

  /* sticky header */
  .site-header .wrap { gap: 12px; height: 64px; }
  .brand { font-size: 16px; gap: 10px; }
  .brand-name { font-size: 16px; }
  .brand-tag { font-size: 9px; }
  .brand .brand-mark { width: 28px; height: 28px; font-size: 10px; }
  .header-tools { gap: 4px; }
  .icon-btn { width: 34px; height: 34px; }
  .lang-toggle button { padding: 6px 8px; font-size: 10px; }
  .mobile-nav a { padding: 14px 16px; }

  /* sections */
  .section { padding: 56px 0; }
  .section-tight { padding: 44px 0; }

  /* type scale */
  .h-display { font-size: clamp(34px, 9vw, 56px); }
  .lede { font-size: 17px; }

  /* hero */
  .hero-name { font-size: clamp(40px, 13.5vw, 88px); letter-spacing: -0.03em; }
  .hero-meta {
    grid-template-columns: 1fr !important;
    gap: 14px;
    padding-bottom: 28px;
  }
  .hero-meta .meta-center, .hero-meta .meta-right { text-align: left; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; justify-content: center; }

  /* editorial list rows */
  .editorial-list .row {
    grid-template-columns: 1fr !important;
    gap: 8px;
    padding: 22px 0;
  }
  .editorial-list .num { font-size: 11px; }
  .editorial-list .ttl { font-size: 20px; }
  .editorial-list .desc { grid-column: 1; }
  .editorial-list .arrow-r { display: none; }
  .editorial-list a.row:hover { padding-left: 0; }

  /* note cards / process / grid utilities */
  .grid-2, .grid-3 { gap: 24px; }
  .process-grid .step .n { font-size: 48px; }
  .process-grid .step h4 { font-size: 19px; }

  /* calculator */
  .calc-grid { gap: 28px; }
  .option-grid.cols-2,
  .option-grid.cols-4 { grid-template-columns: 1fr 1fr; }
  .option { padding: 12px 14px; font-size: 13px; }
  .result-card .head { padding: 20px; }
  .result-card .head .amt { font-size: clamp(26px, 8.5vw, 36px); }
  .result-card .scenarios { padding: 4px 20px; }
  .result-card .scenario .grid { grid-template-columns: 1fr auto; column-gap: 12px; }
  .result-card .scenario .name { font-size: 12.5px; }
  .result-card .explain { padding: 20px; font-size: 12.5px; }

  /* form fields */
  .field input, .field select, .field textarea { font-size: 16px; padding: 10px 0; }

  /* footer */
  .site-footer .grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .site-footer .colophon { flex-direction: column; align-items: flex-start; gap: 10px; }

  /* TOC: stop sticking on mobile, render inline */
  .toc { position: static !important; top: auto; }
  .toc ol { display: flex; flex-wrap: wrap; gap: 6px; }
  .toc li { border-left: 0; border: 1px solid var(--rule); padding: 6px 10px; font-size: 10px; }

  /* tweaks panel & toast: keep on screen */
  .toast { left: 16px; right: 16px; transform: translateY(120%); width: auto; max-width: none; }
  .toast.show { transform: translateY(0); }
}

/* tiny phones */
@media (max-width: 420px) {
  .hero-name { font-size: clamp(36px, 13vw, 64px); }
  .h-display { font-size: clamp(30px, 9vw, 44px); }
  .site-footer .grid { grid-template-columns: 1fr; }
  .option-grid.cols-2, .option-grid.cols-4 { grid-template-columns: 1fr; }
  .result-card .head .amt { font-size: 28px; }
}