/* ===========================================================
   Emissions & Inspections — design tokens
   Display: Big Shoulders Display (condensed, industrial/stamped)
   Body:    Public Sans (plain, official, DMV-form clarity)
   Utility: Space Mono (stickers, prices, station data)
   =========================================================== */
:root {
  --paper: #F7F4EC;
  --paper-raised: #FFFFFF;
  --ink: #16171C;
  --ink-soft: #4B4D57;
  --ink-faint: #85868F;
  --navy: #0B1C8C;
  --navy-deep: #081559;
  --red: #E2202B;
  --red-deep: #B81620;
  --green: #1C8A54;
  --steel: #DEDBD0;
  --steel-line: #CFCBBD;

  --font-display: "Big Shoulders Display", "Arial Narrow", sans-serif;
  --font-body: "Public Sans", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Space Mono", ui-monospace, "SF Mono", monospace;

  --container: 1180px;
  --radius: 14px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* grid/flex children must be allowed to shrink below their content's
   natural width, or a single nowrap button/label can force the whole
   row (and the page) wider than the viewport on small screens */
.hero .wrap > div,
.about-grid > div,
.area-wrap > div,
.book-grid > div,
.footer-grid > div,
.topbar .wrap > * {
  min-width: 0;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: 0.01em;
  text-transform: uppercase;
  line-height: 0.98;
  margin: 0;
  color: var(--navy);
  overflow-wrap: break-word;
}

p { margin: 0 0 1rem; color: var(--ink-soft); }
p:last-child { margin-bottom: 0; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--red);
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  margin: 0 0 0.9rem;
}
.eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--red);
  display: inline-block;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 0.95em 1.6em;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  white-space: nowrap;
}
.btn:focus-visible { outline: 3px solid var(--navy); outline-offset: 3px; }
.btn-stamp {
  background: var(--red);
  color: #fff;
  box-shadow: 0 4px 0 var(--red-deep);
}
.btn-stamp:hover { transform: translateY(-2px); box-shadow: 0 6px 0 var(--red-deep); }
.btn-stamp:active { transform: translateY(1px); box-shadow: 0 2px 0 var(--red-deep); }
.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: var(--navy);
}
.btn-ghost:hover { background: var(--navy); color: #fff; }
.btn-block { width: 100%; }

/* ---------- top bar ---------- */
.topbar {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  background: var(--navy-deep);
  color: #E9E6DA;
  letter-spacing: 0.03em;
}
.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
  flex-wrap: wrap;
}
.topbar a { text-decoration: none; }
.topbar a:hover { color: #fff; }
.topbar-hours { color: #AEB4DE; }

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 3px solid var(--ink);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
  gap: 1rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  flex-shrink: 0;
}
.brand-name {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 1.65rem;
  line-height: 1;
  color: var(--ink);
  letter-spacing: 0.01em;
}
.brand-name span { color: var(--red); }

.main-nav {
  display: flex;
  align-items: center;
  gap: 1.8rem;
}
.main-nav a {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink-soft);
  transition: color 0.15s ease;
}
.main-nav a:hover { color: var(--red); }
.header-cta { display: flex; align-items: center; gap: 1rem; }
.nav-toggle {
  display: none;
  background: none;
  border: 2px solid var(--ink);
  border-radius: 8px;
  width: 42px; height: 42px;
  padding: 0;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle span, .nav-toggle::before, .nav-toggle::after {
  content: "";
  display: block;
  width: 20px; height: 2px;
  background: var(--ink);
  position: relative;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle::before { transform: translateY(-6px); position: absolute; }
.nav-toggle::after { transform: translateY(6px); position: absolute; }

/* ---------- hero ---------- */
.hero {
  padding: 3.5rem 0 4.5rem;
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}
.hero h1 {
  font-size: clamp(1.7rem, 8vw, 4.1rem);
  margin-bottom: 1.1rem;
}
.hero h1 em {
  font-style: normal;
  color: var(--red);
}
.hero-sub {
  font-size: 1.1rem;
  max-width: 46ch;
  margin-bottom: 1.8rem;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}
.hero-ctas .btn-ghost { border-color: var(--ink); color: var(--ink); }
.hero-ctas .btn-ghost:hover { background: var(--ink); color: #fff; }

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.6rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
}
.trust-row strong { color: var(--ink); }

.hero-photo-wrap { position: relative; }
.hero-photo {
  width: 100%;
  height: auto;
  aspect-ratio: 1400 / 933;
  object-fit: cover;
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  box-shadow: 5px 5px 0 var(--red);
}

.stub-head .stub-title {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.82rem;
  color: var(--navy);
}

/* ---------- section shell ---------- */
.section { padding: 5rem 0; }
.section-alt { background: var(--paper-raised); border-top: 1px solid var(--steel-line); border-bottom: 1px solid var(--steel-line); }
.section-navy { background: var(--navy); color: #fff; }
.section-navy h2, .section-navy h3 { color: #fff; }
.section-navy p { color: #C7CCE9; }
.section-navy .eyebrow { color: #FF8A90; }
.section-navy .eyebrow::before { background: #FF8A90; }

.section-head {
  max-width: 62ch;
  margin: 0 0 2.8rem;
}
.section-head h2 { font-size: clamp(1.5rem, 6vw, 2.6rem); }
.section-head p { font-size: 1.05rem; margin-top: 0.8rem; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }

/* ---------- about ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.photo-card {
  margin: 0 0 1.6rem;
  border: 1.5px solid var(--steel-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--paper-raised);
}
.photo-card img {
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 666;
  object-fit: cover;
  border-bottom: 2px solid var(--ink);
}
.photo-card figcaption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-soft);
  padding: 0.75rem 1rem;
}
.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
  margin-top: 1rem;
}
.stat {
  border: 1.5px solid var(--steel-line);
  border-radius: var(--radius);
  padding: 1.1rem 1rem;
  text-align: center;
  background: var(--paper);
}
.stat .num {
  font-family: var(--font-display);
  font-size: 2.1rem;
  color: var(--red);
  line-height: 1;
  display: block;
}
.stat .cap {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-soft);
  display: block;
  margin-top: 0.4rem;
}

/* ---------- how it works ---------- */
.steps-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
}
.step-card {
  background: var(--paper);
  border: 1.5px solid var(--steel-line);
  border-radius: var(--radius);
  padding: 1.6rem 1.4rem;
  position: relative;
}
.step-card .num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--red);
  font-weight: 700;
  display: block;
  margin-bottom: 0.7rem;
}
.step-card h3 {
  font-size: 1.2rem;
  color: var(--ink);
  margin-bottom: 0.5rem;
  text-transform: none;
}
.step-card p { font-size: 0.92rem; }
.step-card:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -1.1rem; top: 50%;
  transform: translateY(-50%);
  width: 0; height: 0;
  border-top: 7px solid transparent;
  border-bottom: 7px solid transparent;
  border-left: 9px solid var(--ink);
  display: none;
}
@media (min-width: 900px) {
  .step-card:not(:last-child)::after { display: block; }
}

/* ---------- services ---------- */
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}
.service-card {
  background: var(--paper-raised);
  border: 1.5px solid var(--steel-line);
  border-radius: var(--radius);
  padding: 1.8rem 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
}
.service-card .badge {
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.3em 0.7em;
  border-radius: 999px;
  background: var(--navy);
  color: #fff;
}
.service-card .badge.alt { background: var(--red); }
.service-card .badge.outline { background: transparent; border: 1.5px solid var(--ink); color: var(--ink); }
.service-card h3 {
  font-size: 1.3rem;
  color: var(--ink);
  text-transform: none;
}
.service-card p { font-size: 0.94rem; }
.service-card .icon {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--paper);
  border: 1.5px solid var(--steel-line);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--navy);
}

/* ---------- pricing ---------- */
.price-note {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-faint);
  margin-top: 1.6rem;
}
.price-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}
.price-tag {
  background: var(--paper-raised);
  border: 1.5px solid var(--steel-line);
  border-radius: var(--radius);
  padding: 1.5rem 1.3rem;
  text-align: center;
  position: relative;
}
.price-tag::before {
  content: "";
  position: absolute;
  top: -9px; left: 50%;
  transform: translateX(-50%);
  width: 16px; height: 16px;
  background: var(--paper);
  border: 1.5px solid var(--steel-line);
  border-radius: 50%;
}
.price-tag .name {
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  display: block;
  margin-bottom: 0.6rem;
}
.price-tag .amount {
  font-family: var(--font-display);
  font-size: 2.4rem;
  color: var(--navy);
  display: block;
  line-height: 1;
}
.price-tag .amount sup { font-size: 1rem; top: -1em; }
.price-tag .fine { font-size: 0.8rem; color: var(--ink-faint); margin-top: 0.5rem; }
.price-tag.featured { border-style: solid; border-color: var(--red); }
.price-tag.featured::before { border-style: solid; border-color: var(--red); }
.price-tag.featured .amount { color: var(--red); }

/* ---------- service area ---------- */
.area-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.area-card {
  background: rgba(255,255,255,0.06);
  border: 2px solid rgba(255,255,255,0.35);
  border-radius: var(--radius);
  padding: 2rem;
  overflow: hidden;
}
.area-card .eyebrow { color: #FF8A90; }
.area-card-photo {
  width: calc(100% + 4rem);
  margin: -2rem -2rem 1.4rem;
  max-width: none;
  height: auto;
  aspect-ratio: 1000 / 666;
  object-fit: cover;
  border-bottom: 2px solid rgba(255,255,255,0.35);
}

/* ---------- book now ---------- */
.book-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 3rem;
  align-items: start;
}
.book-info .contact-block,
.booking-info-card .contact-block {
  margin-top: 1.6rem;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.92rem;
}
.book-info .contact-block a,
.booking-info-card .contact-block a { text-decoration: none; }
.book-info .contact-block a:hover,
.booking-info-card .contact-block a:hover { color: var(--red); }
.book-info .contact-block .k,
.booking-info-card .contact-block .k { color: var(--ink-faint); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; display: block; }

.form-card {
  background: var(--paper-raised);
  border: 2px solid var(--ink);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: 5px 5px 0 var(--red);
}
.book-cta-list {
  list-style: none;
  margin: 1.2rem 0 1.6rem;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--ink);
}
.book-cta-list li { display: flex; align-items: baseline; gap: 0.6rem; }
.book-cta-list li::before { content: "✓"; color: var(--red); font-weight: 700; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.field { margin-bottom: 1.1rem; }
.field label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  margin-bottom: 0.4rem;
}
.field input, .field select, .field textarea {
  width: 100%;
  border: 1.5px solid var(--steel-line);
  border-radius: 8px;
  padding: 0.7em 0.85em;
  font-family: var(--font-body);
  font-size: 0.96rem;
  background: var(--paper);
  color: var(--ink);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--navy);
  box-shadow: 0 0 0 3px rgba(11,28,140,0.15);
}
.field textarea { resize: vertical; min-height: 90px; }
.form-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 1.4rem;
  flex-wrap: wrap;
}
.form-foot p { font-size: 0.8rem; margin: 0; }

/* ---------- booking wizard ---------- */
.wizard-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 2px dashed var(--steel-line);
  padding-bottom: 0.8rem;
  margin-bottom: 1.4rem;
  font-family: var(--font-mono);
}
.wizard-progress {
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.wizard-panel { display: none; }
.wizard-panel.is-active { display: block; }
.wizard-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-top: 0.4rem;
}
.wizard-note {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin: -0.3rem 0 1.1rem;
}
.wizard-error {
  font-size: 0.85rem;
  color: var(--red-deep);
  margin: 0 0 1rem;
}
.wizard-summary {
  background: var(--paper);
  border: 1.5px dashed var(--steel-line);
  border-radius: 10px;
  padding: 0.9rem 1.1rem;
  margin-bottom: 1.2rem;
}
.wizard-summary p {
  margin: 0 0 0.3rem;
  font-size: 0.9rem;
  color: var(--ink);
}
.wizard-summary p:last-child { margin-bottom: 0; }

.slot-picker { margin-bottom: 0.4rem; }
.slot-days {
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  padding-bottom: 0.6rem;
  margin-bottom: 1rem;
}
.slot-day {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  white-space: nowrap;
  padding: 0.6em 0.9em;
  border-radius: 10px;
  border: 1.5px solid var(--steel-line);
  background: var(--paper-raised);
  color: var(--ink);
  cursor: pointer;
}
.slot-day:disabled { color: var(--ink-faint); cursor: not-allowed; opacity: 0.5; }
.slot-day.is-selected { border-color: var(--navy); background: var(--navy); color: #fff; }
.slot-times {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  min-height: 44px;
}
.slot-time {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.55em 0.9em;
  border-radius: 8px;
  border: 1.5px solid var(--steel-line);
  background: var(--paper-raised);
  color: var(--ink);
  cursor: pointer;
}
.slot-time.is-selected { border-color: var(--red); background: var(--red); color: #fff; }
.slot-empty { font-size: 0.85rem; color: var(--ink-faint); margin: 0; }

.form-success {
  display: none;
  text-align: center;
  padding: 2.5rem 1rem;
}
.form-success.is-visible { display: block; }
.form-success .stamp-mark {
  width: 72px; margin: 0 auto 1rem;
}
.form-success h3 { color: var(--green); font-size: 1.6rem; margin-bottom: 0.5rem; }

/* ---------- footer ---------- */
.site-footer {
  background: var(--ink);
  color: #C9CAD1;
  padding: 3.5rem 0 1.5rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid #33343B;
}
.footer-brand-mark {
  margin-bottom: 1rem;
}
.footer-brand-mark span {
  font-family: var(--font-display);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 1.1rem;
  color: #fff;
  letter-spacing: 0.01em;
}
.footer-brand-mark em { font-style: normal; color: var(--red); }
.footer-brand p { color: #9C9DA6; font-size: 0.92rem; max-width: 32ch; }
.footer-col h4 {
  font-family: var(--font-mono);
  color: #fff;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col a { color: #C9CAD1; text-decoration: none; font-size: 0.92rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: #7A7B84;
}
.footer-bottom a { color: #7A7B84; text-decoration: underline; }
.footer-bottom a:hover { color: #fff; }

/* ---------- reveal on scroll ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 980px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .steps-strip { grid-template-columns: repeat(2, 1fr); }
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: repeat(2, 1fr); }
  .area-wrap { grid-template-columns: 1fr; }
  .book-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .main-nav { display: none; }
  .header-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
}

@media (max-width: 720px) {
  .topbar-hours { display: none; }
  .topbar .wrap { flex-direction: column; align-items: flex-start; gap: 0.2rem; }
  .topbar .wrap > span:first-child { display: block; width: 100%; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 560px) {
  .section { padding: 3.4rem 0; }
  .stat-row { grid-template-columns: 1fr; }
  .steps-strip { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .price-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .hero-photo { box-shadow: 5px 5px 0 var(--red); }
  .form-card { box-shadow: 5px 5px 0 var(--red); padding: 1.1rem; }
  .btn { white-space: normal; text-align: center; }
  .topbar .wrap > span:first-child { white-space: normal; }

  /* Title and step counter collide on a phone when kept on one row */
  .wizard-head { flex-direction: column; align-items: flex-start; gap: 0.25rem; }

  /* Comfortable tap targets: these are thumb-sized on a phone, not mouse-sized */
  .slot-time { padding: 0.75em 1em; }
  .price-tag { padding: 1.2rem 0.7rem; }
  .price-tag .fine { font-size: 0.74rem; }
  .footer-col a { display: inline-block; padding: 0.3rem 0; }
  .mobile-nav a { padding-top: 1.1rem; padding-bottom: 1.1rem; }
  .topbar a,
  .contact-block a { display: inline-block; padding: 0.25rem 0; }
}

/* ---------- mobile nav drawer ---------- */
.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0;
  background: var(--paper);
  border-bottom: 3px solid var(--ink);
}
.mobile-nav.is-open { display: flex; }
.mobile-nav a {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--steel-line);
  font-family: var(--font-mono);
  text-transform: uppercase;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--ink);
}
.mobile-nav .btn { margin: 1rem 1.5rem 1.4rem; }