/* ==========================================================================
   VIGILUME site stylesheet
   Design read: B2B industrial datasheet site for procurement engineers and
   regional distributors. Technical, trust-first. Native CSS, no framework.
   Dials: DESIGN_VARIANCE 4 / MOTION_INTENSITY 3 / VISUAL_DENSITY 5
   Shape lock: radius 0 everywhere. Color lock: one accent (#C4451C).
   ========================================================================== */

/* ---------- tokens ---------- */
:root {
  --paper: #f4f4f1;
  --surface: #ffffff;
  --ink: #14161a;
  --ink-2: #5b616b;
  --ink-3: #666d77;
  --line: #d6d7d2;
  --line-2: #e8e9e4;
  --accent: #c4451c;
  --accent-dark: #a53714;
  --dark: #14161a;
  --dark-2: #1d2026;
  --on-dark: #ecedea;
  --on-dark-2: #a3a8ae;

  --sans: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system,
    "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Mono", "Consolas", "SFMono-Regular", "Menlo", monospace;

  --container: 1240px;
  --gutter: clamp(1.25rem, 4vw, 2.5rem);
  --section-y: clamp(3.5rem, 7vw, 6.5rem);
  --nav-h: 68px;

  --step-0: 1rem;
  --step-1: clamp(1.125rem, 1.4vw, 1.25rem);
  --step-2: clamp(1.375rem, 2vw, 1.625rem);
  --step-3: clamp(1.75rem, 3vw, 2.375rem);
  --step-4: clamp(2.125rem, 4.2vw, 3.25rem);
  --step-5: clamp(2.5rem, 5.6vw, 4.25rem);
}

/* ---------- reset ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: var(--step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img,
svg,
video {
  max-width: 100%;
  display: block;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 0.6em;
  font-weight: 620;
  line-height: 1.06;
  letter-spacing: -0.028em;
  color: var(--ink);
  text-wrap: balance;
}

h1 {
  font-size: var(--step-5);
  line-height: 0.98;
  letter-spacing: -0.035em;
}

h2 {
  font-size: var(--step-3);
}

h3 {
  font-size: var(--step-1);
  letter-spacing: -0.015em;
  line-height: 1.3;
}

p {
  margin: 0 0 1.1em;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.22em;
}

a:hover {
  color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

::selection {
  background: var(--ink);
  color: var(--paper);
}

/* ---------- layout ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow {
  max-width: 860px;
}

.section {
  padding-block: var(--section-y);
  border-top: 1px solid var(--line);
}

.section--paper {
  background: var(--paper);
}

.section--surface {
  background: var(--surface);
}

.section--dark {
  background: var(--dark);
  color: var(--on-dark);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: #fff;
}

.section--dark .lede,
.section--dark p {
  color: var(--on-dark-2);
}

.section__head {
  max-width: 64ch;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.section__head p {
  color: var(--ink-2);
  font-size: var(--step-1);
  max-width: 60ch;
}

.rule {
  height: 1px;
  background: var(--line);
  border: 0;
  margin: 0;
}

.grid {
  display: grid;
  gap: clamp(1rem, 2vw, 1.75rem);
}

.grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}

/* ---------- type helpers ---------- */
.eyebrow {
  display: block;
  margin: 0 0 1.1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.section--dark .eyebrow {
  color: var(--on-dark-2);
}

.lede {
  font-size: var(--step-1);
  color: var(--ink-2);
  max-width: 62ch;
}

.mono {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

.num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
}

.muted {
  color: var(--ink-2);
}

.small {
  font-size: 0.875rem;
  line-height: 1.55;
}

.prose p,
.prose ul,
.prose ol {
  max-width: 68ch;
  color: var(--ink-2);
}

.prose h3 {
  margin-top: 2.2em;
}

.prose ul,
.prose ol {
  padding-left: 1.1em;
  margin-bottom: 1.2em;
}

.prose li {
  margin-bottom: 0.45em;
}

/* ---------- skip link ---------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1rem;
}

.skip-link:focus {
  left: 0;
}

/* ---------- header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.nav {
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  white-space: nowrap;
}

.brand::before {
  content: "";
  width: 9px;
  height: 9px;
  background: var(--accent);
  display: block;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 1.6vw, 1.6rem);
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav__link {
  font-size: 0.9rem;
  color: var(--ink-2);
  text-decoration: none;
  white-space: nowrap;
  padding-block: 0.4rem;
  border-bottom: 1px solid transparent;
}

.nav__link:hover,
.nav__link[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav__toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  padding: 0.45rem 0.6rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  color: var(--ink);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.35rem;
  border: 1px solid var(--ink);
  background: transparent;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.005em;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.16s ease, color 0.16s ease,
    border-color 0.16s ease;
}

.btn:hover {
  background: var(--ink);
  color: var(--paper);
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
}

.btn--light {
  border-color: rgba(255, 255, 255, 0.42);
  color: #fff;
}

.btn--light:hover {
  background: #fff;
  color: var(--ink);
  border-color: #fff;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.9rem;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--accent);
  padding-bottom: 0.12rem;
}

.link-arrow::after {
  content: "\2192";
  font-family: var(--mono);
}

.link-arrow:hover {
  color: var(--accent);
}

/* ---------- hero ---------- */
.hero {
  padding-block: clamp(2.5rem, 5vw, 4.25rem) clamp(2.5rem, 5vw, 4rem);
  border-bottom: 1px solid var(--line);
}

.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: end;
}

.hero h1 {
  max-width: 16ch;
}

.hero__sub {
  margin-top: 1.5rem;
  font-size: var(--step-1);
  color: var(--ink-2);
  max-width: 46ch;
}

.hero__panel {
  border: 1px solid var(--ink);
  background: var(--surface);
}

.hero__panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.fact {
  padding: 1rem;
  border-bottom: 1px solid var(--line-2);
  border-right: 1px solid var(--line-2);
}

.fact:nth-child(2n) {
  border-right: 0;
}

.fact:nth-last-child(-n + 2) {
  border-bottom: 0;
}

.fact__num {
  display: block;
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--ink);
}

.fact__label {
  display: block;
  margin-top: 0.35rem;
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--ink-2);
}

/* ---------- cards ---------- */
.card {
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.16s ease, background-color 0.16s ease;
}

a.card:hover {
  border-color: var(--ink);
  color: inherit;
}

a.card:hover .card__title {
  color: var(--accent);
}

.card__kicker {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.9rem;
}

.card__title {
  font-size: 1.05rem;
  font-weight: 620;
  letter-spacing: -0.015em;
  line-height: 1.25;
  margin-bottom: 0.6rem;
  color: var(--ink);
}

.card__body {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-2);
  margin: 0;
}

.card__foot {
  margin-top: auto;
  padding-top: 1.1rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

/* ---------- model list ---------- */
.model {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.25rem 1rem;
  padding: 1rem 0;
  border-top: 1px solid var(--line-2);
}

.model:first-of-type {
  border-top: 0;
}

.model__code {
  font-family: var(--mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  word-break: break-word;
}

.model__use {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  white-space: nowrap;
  padding-top: 0.2rem;
}

.model__spec {
  grid-column: 1 / -1;
  font-size: 0.875rem;
  color: var(--ink-2);
}

/* ---------- tables ---------- */
.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

caption {
  caption-side: top;
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: var(--surface);
}

th,
td {
  padding: 0.8rem 1rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-2);
  line-height: 1.5;
}

thead th {
  font-family: var(--mono);
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: 0;
}

td .mono,
td strong {
  font-family: var(--mono);
  font-weight: 600;
  font-size: 0.875rem;
}

td:first-child {
  color: var(--ink);
}

/* ---------- stats band ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  background: var(--surface);
}

.stat {
  padding: clamp(1.25rem, 2.5vw, 1.75rem);
  border-right: 1px solid var(--line-2);
}

.stat:last-child {
  border-right: 0;
}

.stat__num {
  display: block;
  font-family: var(--mono);
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1;
}

.stat__label {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.82rem;
  line-height: 1.4;
  color: var(--ink-2);
}

/* ---------- feature list ---------- */
.list-check {
  list-style: none;
  margin: 0;
  padding: 0;
}

.list-check li {
  position: relative;
  padding: 0.7rem 0 0.7rem 1.6rem;
  border-bottom: 1px solid var(--line-2);
  font-size: 0.93rem;
  color: var(--ink-2);
}

.list-check li:last-child {
  border-bottom: 0;
}

.list-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.15rem;
  width: 7px;
  height: 7px;
  background: var(--accent);
}

.list-check strong {
  color: var(--ink);
  font-weight: 620;
}

/* ---------- spec strip ---------- */
.spec-strip {
  border: 1px solid var(--line);
  background: var(--surface);
}

.spec-strip__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--line);
}

.spec-strip__title {
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.spec-strip__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.spec-cell {
  padding: 1rem 1.25rem;
  border-right: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-2);
}

.spec-cell:nth-child(3n) {
  border-right: 0;
}

.spec-cell__k {
  display: block;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 0.3rem;
}

.spec-cell__v {
  display: block;
  font-size: 0.9rem;
  color: var(--ink);
}

/* ---------- faq ---------- */
.faq {
  border-top: 1px solid var(--line);
}

.faq__item {
  border-bottom: 1px solid var(--line);
}

.faq__item summary {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.25rem 0;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.012em;
  list-style: none;
  color: var(--ink);
}

.faq__item summary::-webkit-details-marker {
  display: none;
}

.faq__item summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1.1rem;
  color: var(--accent);
  flex: none;
  line-height: 1.3;
}

.faq__item[open] summary::after {
  content: "\2212";
}

.faq__item p {
  max-width: 72ch;
  padding-bottom: 1.4rem;
  color: var(--ink-2);
  font-size: 0.95rem;
}

/* ---------- cta band ---------- */
.cta-band {
  background: var(--dark);
  color: var(--on-dark);
  padding-block: clamp(3rem, 6vw, 5rem);
}

.cta-band__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}

.cta-band h2 {
  color: #fff;
  max-width: 22ch;
}

.cta-band p {
  color: var(--on-dark-2);
  max-width: 46ch;
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--dark);
  color: var(--on-dark-2);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-block: clamp(2.5rem, 5vw, 4rem) 2rem;
  font-size: 0.875rem;
}

.site-footer h2,
.site-footer h3 {
  color: #fff;
}

.footer__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: clamp(1.5rem, 3vw, 3rem);
}

.footer__grid a {
  color: var(--on-dark);
  text-decoration: none;
}

.footer__grid a:hover {
  color: #fff;
  text-decoration: underline;
}

.footer__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer__list li {
  margin-bottom: 0.55rem;
}

.footer__label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--on-dark-2);
  margin-bottom: 0.9rem;
  display: block;
}

.footer__bottom {
  margin-top: clamp(2rem, 4vw, 3rem);
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.8rem;
}

/* ---------- forms ---------- */
.form {
  display: grid;
  gap: 1.1rem;
  max-width: 620px;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  font-family: inherit;
  font-size: 0.95rem;
  border-radius: 0;
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--ink);
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

.field textarea {
  min-height: 130px;
  resize: vertical;
}

.field__hint {
  font-size: 0.78rem;
  color: var(--ink-3);
}

.form__status {
  font-size: 0.875rem;
  color: var(--ink-2);
  min-height: 1.2em;
}

/* ---------- breadcrumbs ---------- */
.crumbs {
  padding-top: 1.4rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.crumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}

.crumbs li:not(:last-child)::after {
  content: "/";
  margin-left: 0.5rem;
  color: var(--ink-3);
}

.crumbs a {
  color: var(--ink-2);
  text-decoration: none;
}

.crumbs a:hover {
  color: var(--accent);
}

/* ---------- media ---------- */
.hero__media {
  margin: 0;
  border: 1px solid var(--ink);
  background: var(--surface);
}

.hero__media-frame {
  aspect-ratio: 4 / 3;
  padding: clamp(0.9rem, 2vw, 1.8rem);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero__media-frame img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.hero__media-cap {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.7rem 0.95rem;
  border-top: 1px solid var(--line);
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--ink-2);
}

.hero__media-cap .mono {
  color: var(--ink-3);
  white-space: nowrap;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card__media {
  display: block;
  margin: -1.5rem -1.5rem 1.25rem;
  padding: 1rem;
  aspect-ratio: 4 / 3;
  background: var(--surface);
  border-bottom: 1px solid var(--line-2);
}

.card__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.figure {
  margin: 0;
}

.figure img {
  width: 100%;
  height: auto;
  background: var(--surface);
  border: 1px solid var(--line);
}

.figure__cap {
  margin-top: 0.65rem;
  font-size: 0.8rem;
  line-height: 1.45;
  color: var(--ink-2);
}

.media-grid {
  align-items: start;
}

.stack {
  display: grid;
  gap: 1.6rem;
  align-content: start;
}

.grid--1 {
  grid-template-columns: minmax(0, 1fr);
}

/* ---------- process steps ---------- */
.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 clamp(1.5rem, 4vw, 3.5rem);
}

.step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1.1rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--line);
}

.step__num {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 0.15rem;
}

.step__title {
  display: block;
  font-weight: 620;
  letter-spacing: -0.012em;
  margin-bottom: 0.3rem;
}

.step__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink-2);
}

/* ---------- link index ---------- */
.link-index__item {
  display: block;
  padding-top: 1rem;
  border-top: 2px solid var(--ink);
  text-decoration: none;
  color: inherit;
}

.link-index__item:hover .link-index__title {
  color: var(--accent);
}

.link-index__title {
  display: block;
  font-size: 1.05rem;
  font-weight: 620;
  letter-spacing: -0.015em;
  line-height: 1.3;
  margin-bottom: 0.45rem;
}

.link-index__body {
  display: block;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--ink-2);
}

/* ---------- misc ---------- */
.tag {
  display: inline-block;
  padding: 0.2rem 0.45rem;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-2);
  white-space: nowrap;
}

.note {
  border-left: 2px solid var(--accent);
  padding: 0.15rem 0 0.15rem 1rem;
  font-size: 0.9rem;
  color: var(--ink-2);
  max-width: 68ch;
}

.defs {
  margin: 0;
  border-top: 1px solid var(--line);
}

.defs__row {
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
  gap: 1.5rem;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--line-2);
  font-size: 0.92rem;
}

.defs__row dt {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 0.15rem;
}

.defs__row dd {
  margin: 0;
  color: var(--ink-2);
}

.contact-line {
  display: block;
  font-size: 0.92rem;
  margin-bottom: 0.5rem;
}

.contact-line a {
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.contact-line a:hover {
  border-bottom-color: var(--accent);
}

/* ---------- motion ---------- */
.reveal {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .nav__list {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    padding: 0.5rem var(--gutter) 1.25rem;
  }

  .nav__list.is-open {
    display: flex;
  }

  .nav__list li {
    border-bottom: 1px solid var(--line-2);
  }

  .nav__link {
    display: block;
    padding: 0.85rem 0;
    font-size: 1rem;
  }

  .nav__toggle {
    display: block;
  }

  .grid--4,
  .stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .stat:nth-child(2) {
    border-right: 0;
  }

  .stat:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line-2);
  }

  .hero__grid,
  .split,
  .cta-band__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero__grid {
    gap: 2.5rem;
  }

  .hero h1 {
    max-width: 20ch;
  }

  .footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: minmax(0, 1fr);
  }

  .spec-strip__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .spec-cell:nth-child(3n) {
    border-right: 1px solid var(--line-2);
  }

  .spec-cell:nth-child(2n) {
    border-right: 0;
  }

  .defs__row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.3rem;
  }

  .stats {
    grid-template-columns: minmax(0, 1fr);
  }

  .stat {
    border-right: 0;
    border-bottom: 1px solid var(--line-2);
  }

  .stat:last-child {
    border-bottom: 0;
  }

  .footer__grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .btn-row .btn {
    width: 100%;
  }

  .card__media {
    aspect-ratio: 16 / 9;
    padding: 0.75rem;
  }

  .hero__media-frame {
    aspect-ratio: 4 / 3;
    padding: 1rem;
  }
}