@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Playfair+Display:wght@600;700;800&display=swap");

:root {
  --bg: #f8f9ff;
  --panel: #eff4ff;
  --panel-2: #e6eeff;
  --ink: #0d1c2f;
  --muted: #45464d;
  --line: rgba(13, 28, 47, 0.16);
  --line-strong: rgba(13, 28, 47, 0.28);
  --gold: #7a582b;
  --gold-soft: #fecf97;
  --black: #000000;
  --white: #ffffff;
  --max: 1280px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 64px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 32px;
  padding: 0 max(24px, calc((100vw - var(--max)) / 2));
  border-bottom: 1px solid var(--line);
  background: rgba(248, 249, 255, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  font-family: "Playfair Display", Georgia, serif;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  justify-content: center;
  gap: 32px;
}

.nav-links a {
  position: relative;
  padding: 24px 0 20px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.nav-links a.active,
.nav-links a:hover {
  color: var(--ink);
}

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 17px;
  height: 2px;
  background: var(--gold);
}

.nav-action,
.btn {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--black);
  background: var(--black);
  color: var(--white);
  padding: 12px 28px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.btn.secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.72);
}

.btn.outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}

.menu {
  display: none;
  justify-self: end;
  border: 0;
  background: transparent;
  color: var(--ink);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.kicker {
  margin: 0 0 14px;
  color: var(--gold);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Playfair Display", Georgia, serif;
  color: var(--ink);
  letter-spacing: 0;
  line-height: 1.08;
}

h1 {
  font-size: clamp(42px, 6.4vw, 86px);
}

h2 {
  font-size: clamp(32px, 4vw, 56px);
}

h3 {
  font-size: 26px;
}

p {
  color: var(--muted);
}

.hero {
  position: relative;
  min-height: calc(100vh - 64px);
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--black);
}

.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.8;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0.45) 52%, rgba(0, 0, 0, 0.2)),
    linear-gradient(0deg, rgba(0, 0, 0, 0.32), transparent 45%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  padding: 110px 0;
}

.hero-content {
  max-width: 700px;
}

.hero .kicker,
.hero p,
.hero h1 {
  color: var(--white);
}

.hero p {
  max-width: 560px;
  color: rgba(255, 255, 255, 0.86);
  font-size: 18px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.scroll-note {
  position: absolute;
  right: 0;
  bottom: 6px;
  display: flex;
  align-items: center;
  gap: 14px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.scroll-note::before {
  content: "";
  width: 52px;
  height: 1px;
  background: rgba(255, 255, 255, 0.46);
}

.section {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  padding: 104px 0;
}

.intro-grid {
  display: grid;
  grid-template-columns: 5fr 7fr;
  gap: 72px;
  align-items: center;
}

.intro-copy p {
  font-size: 16px;
  line-height: 1.72;
}

.mini-list {
  display: grid;
  gap: 22px;
  margin-top: 34px;
}

.mini-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 16px;
}

.mini-item::before {
  content: "";
  width: 18px;
  height: 18px;
  margin-top: 4px;
  border: 1px solid var(--gold);
  transform: rotate(45deg);
}

.mini-item strong {
  display: block;
  color: var(--ink);
  font-weight: 700;
}

.mini-item span {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.image-pair {
  display: grid;
  grid-template-columns: 1fr 0.78fr;
  gap: 24px;
  align-items: start;
}

.image-pair img {
  width: 100%;
  object-fit: cover;
  background: var(--panel);
}

.image-pair img:first-child {
  aspect-ratio: 4 / 5;
  margin-top: 48px;
}

.image-pair img:nth-child(2) {
  aspect-ratio: 4 / 5.35;
}

.gold-note {
  width: 220px;
  margin: -42px 0 0 auto;
  padding: 24px;
  background: var(--gold-soft);
}

.gold-note span {
  display: block;
  color: #5f4115;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.gold-note strong {
  display: block;
  margin-top: 8px;
  font-family: "Playfair Display", Georgia, serif;
  color: #2a1800;
  font-size: 30px;
  line-height: 1;
}

.section-title {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 28px;
  margin-bottom: 48px;
}

.section-title p {
  max-width: 540px;
}

.text-link {
  color: var(--ink);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.collection-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 24px;
}

.collection-tile {
  position: relative;
  min-height: 430px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  overflow: hidden;
  padding: 36px;
  background: var(--black);
}

.collection-tile.large {
  grid-row: span 2;
  min-height: 704px;
}

.collection-tile.wide {
  grid-column: span 2;
  min-height: 420px;
}

.collection-tile img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.78;
}

.collection-tile::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 34%, rgba(0, 0, 0, 0.78));
}

.collection-tile .kicker,
.collection-tile h3 {
  position: relative;
  z-index: 1;
}

.collection-tile .kicker {
  color: var(--gold-soft);
}

.collection-tile h3 {
  max-width: 650px;
  color: var(--white);
  font-size: clamp(30px, 4vw, 52px);
}

.light-band {
  background: var(--panel);
}

.light-band .section {
  padding-top: 92px;
  padding-bottom: 92px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.product {
  background: var(--white);
}

.product img {
  width: 100%;
  aspect-ratio: 4 / 4.35;
  object-fit: cover;
}

.product-body {
  padding: 28px 32px 32px;
}

.product .kicker {
  margin-bottom: 10px;
}

.product h3 {
  min-height: 62px;
  margin-bottom: 24px;
}

.specs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid rgba(13, 28, 47, 0.1);
}

.specs div {
  padding-top: 18px;
}

.specs span {
  display: block;
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.specs strong {
  display: block;
  margin-top: 7px;
  color: var(--ink);
  font-size: 13px;
}

.black-section {
  background: var(--black);
  color: var(--white);
}

.black-section .section {
  padding-top: 108px;
  padding-bottom: 108px;
  text-align: center;
}

.black-section h2,
.black-section .kicker {
  color: var(--white);
}

.black-section h2 {
  max-width: 780px;
  margin: 0 auto;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 60px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  border-bottom: 1px solid rgba(255, 255, 255, 0.16);
}

.metric {
  padding: 26px 18px;
}

.metric + .metric {
  border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.metric strong {
  display: block;
  color: var(--gold-soft);
  font-family: "Playfair Display", Georgia, serif;
  font-size: 34px;
  line-height: 1;
}

.metric span {
  display: block;
  margin-top: 8px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cta {
  width: min(var(--max), calc(100% - 48px));
  margin: 72px auto;
  padding: 56px 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 32px;
  background: var(--white);
}

.cta h2 {
  max-width: 720px;
}

.footer {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.9fr;
  gap: 48px;
  padding: 58px max(24px, calc((100vw - var(--max)) / 2));
  background: var(--white);
}

.footer strong {
  display: block;
  margin-bottom: 14px;
  font-family: "Playfair Display", Georgia, serif;
  font-size: 20px;
}

.footer p,
.footer a {
  color: var(--muted);
  font-size: 13px;
}

.footer nav {
  display: grid;
  gap: 8px;
}

.page-head {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 72px;
  align-items: end;
  padding: 104px 0 72px;
}

.page-head p:not(.kicker) {
  max-width: 650px;
  font-size: 18px;
  line-height: 1.72;
}

.catalogue-shell {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto 104px;
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 40px;
}

.filters {
  align-self: start;
  position: sticky;
  top: 92px;
}

.filters h2 {
  margin-bottom: 18px;
  font-size: 18px;
}

.filter-list {
  display: grid;
  border-top: 1px solid var(--line);
}

.filter-list label,
.filter-list a {
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.detail-grid {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto 104px;
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 72px;
}

.detail-card {
  background: var(--white);
  padding: 40px;
}

.fact-list {
  border-top: 1px solid var(--line);
}

.fact-list div {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 24px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.fact-list dt,
.fact-list dd {
  margin: 0;
}

.fact-list dt {
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.fact-list dd {
  color: var(--ink);
  font-weight: 700;
}

.form {
  display: grid;
  gap: 24px;
  background: var(--white);
  padding: 40px;
}

.form label {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.form input,
.form textarea {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  padding: 12px 0;
  color: var(--ink);
  font-size: 15px;
  letter-spacing: 0;
  text-transform: none;
}

.form-status {
  margin: 0;
  min-height: 24px;
  color: var(--gold);
  font-weight: 700;
}

.proposal-hero {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 0.72fr);
  gap: 72px;
  align-items: end;
  padding: 104px 0 64px;
}

.proposal-hero p:not(.kicker) {
  max-width: 620px;
  font-size: 18px;
  line-height: 1.72;
}

.proposal-shell {
  width: min(var(--max), calc(100% - 48px));
  margin: 0 auto 104px;
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  gap: 40px;
}

.proposal-sidebar {
  position: sticky;
  top: 92px;
  align-self: start;
  min-width: 0;
  display: grid;
  gap: 0;
}

.side-step {
  min-height: 44px;
  min-width: 0;
  display: flex;
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.side-step:last-child {
  border-bottom: 1px solid var(--line);
}

.side-step.active,
.side-step:hover {
  color: var(--ink);
}

.proposal-main {
  min-width: 0;
  display: grid;
  gap: 28px;
}

.proposal-panel,
.proposal-module {
  width: 100%;
  min-width: 0;
  background: var(--white);
  padding: 40px;
}

.proposal-module {
  display: none;
}

.proposal-module.is-active {
  display: block;
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: start;
  gap: 28px;
  margin-bottom: 30px;
}

.scope-chip {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
}

.module-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.module-card {
  min-height: 210px;
  position: relative;
  display: grid;
  grid-template-rows: auto auto auto 1fr;
  align-content: stretch;
  gap: 10px;
  padding: 24px 24px 22px;
  border: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: transparent;
  text-align: left;
  cursor: pointer;
  transition: background 180ms ease, box-shadow 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.module-card.is-active {
  background: var(--panel);
  box-shadow: inset 0 0 0 2px rgba(122, 88, 43, 0.34);
}

.module-card:hover,
.module-card:focus-visible {
  background: var(--panel);
  box-shadow: inset 0 0 0 2px rgba(122, 88, 43, 0.22);
  transform: translateY(-2px);
}

.module-card span {
  color: var(--gold);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.module-card strong {
  color: var(--ink);
  font-family: "Playfair Display", Georgia, serif;
  font-size: 24px;
  line-height: 1.1;
}

.module-card small {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.module-card em {
  align-self: end;
  width: max-content;
  max-width: 100%;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-size: 11px;
  font-style: normal;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.module-card em::after {
  content: "";
  width: 7px;
  height: 7px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(-45deg);
}

.module-card:hover em,
.module-card:focus-visible em {
  border-color: rgba(122, 88, 43, 0.62);
  background: var(--white);
}

.module-card.is-active em {
  border-color: var(--gold);
  background: var(--gold);
  color: var(--white);
}

.module-card.is-active em::after {
  transform: rotate(45deg);
}

.proposal-note {
  margin-top: 24px;
  padding: 18px 20px;
  background: var(--panel);
  color: var(--muted);
}

.proposal-note strong {
  color: var(--ink);
}

.proposal-reader-guide {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  margin-top: 26px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.proposal-reader-guide div {
  min-height: 130px;
  padding: 20px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.proposal-reader-guide strong {
  display: block;
  color: var(--ink);
}

.proposal-reader-guide span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.55;
}

.module-title {
  max-width: 780px;
  margin-bottom: 30px;
}

.module-title p:not(.kicker) {
  font-size: 17px;
  line-height: 1.7;
}

.module-explainer {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 28px;
  margin: 0 0 30px;
  padding: 24px;
  background: var(--panel);
}

.module-explainer h3 {
  font-size: 25px;
}

.module-explainer p {
  margin: 0;
  line-height: 1.68;
}

.decision-box {
  display: grid;
  gap: 8px;
  padding: 18px 20px;
  margin: 0 0 30px;
  border-left: 3px solid var(--gold);
  background: var(--white);
}

.decision-box strong {
  color: var(--ink);
}

.decision-box span {
  color: var(--muted);
}

.metric-row.compact {
  margin: 0 0 30px;
  border-color: var(--line);
}

.metric.light {
  border-color: var(--line);
}

.metric.light + .metric.light {
  border-left: 1px solid var(--line);
}

.metric.light strong {
  color: var(--ink);
}

.metric.light span {
  color: var(--muted);
}

.deliverable-list {
  display: grid;
  gap: 10px;
}

.deliverable-list details {
  border-top: 1px solid var(--line);
}

.deliverable-list details.is-animating {
  overflow: hidden;
}

.deliverable-list details:last-child {
  border-bottom: 1px solid var(--line);
}

.deliverable-list summary {
  min-height: 76px;
  position: relative;
  display: grid;
  grid-template-columns: 210px minmax(0, 1fr) 34px;
  gap: 24px;
  align-items: center;
  padding-right: 8px;
  cursor: pointer;
  list-style: none;
  transition: background 180ms ease, color 180ms ease;
}

.deliverable-list summary:hover,
.deliverable-list summary:focus-visible {
  background: rgba(239, 244, 255, 0.72);
}

.deliverable-list summary::after {
  content: "";
  justify-self: end;
  width: 28px;
  height: 28px;
  border: 1px solid var(--line-strong);
  background:
    linear-gradient(var(--gold), var(--gold)) center / 10px 2px no-repeat,
    linear-gradient(var(--gold), var(--gold)) center / 2px 10px no-repeat;
  transition: background-color 180ms ease, transform 220ms ease, border-color 180ms ease;
}

.deliverable-list details[open] summary::after {
  border-color: rgba(122, 88, 43, 0.55);
  background:
    linear-gradient(var(--gold), var(--gold)) center / 10px 2px no-repeat;
  transform: rotate(180deg);
}

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

.deliverable-list summary span {
  color: var(--gold);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.deliverable-list summary b {
  color: var(--ink);
  font-size: 15px;
}

.accordion-body {
  overflow: hidden;
  transition: height 260ms ease, opacity 220ms ease;
  will-change: height;
}

details:not([open]) .accordion-body {
  height: 0;
  opacity: 0;
}

details[open] .accordion-body {
  opacity: 1;
}

.deliverable-list ul {
  display: grid;
  gap: 10px;
  margin: 0 0 24px 234px;
  padding: 0;
  list-style: none;
}

.deliverable-list li {
  color: var(--muted);
}

.deliverable-list li::before {
  content: "— ";
  color: var(--gold);
}

.detail-copy {
  margin: 0 0 18px 234px;
  color: var(--muted);
  line-height: 1.68;
}

.deliverable-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 0 0 24px 234px;
}

.deliverable-item {
  position: relative;
  padding: 16px;
  background: var(--panel);
  transition: background 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.deliverable-item:hover {
  background: var(--panel-2);
}

.deliverable-item strong {
  position: relative;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--ink);
  font-size: 14px;
}

.deliverable-item[data-ui-icon] strong::before {
  content: attr(data-ui-icon);
  width: 22px;
  height: 22px;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--line-strong);
  color: var(--gold);
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
}

.deliverable-item[data-ui-icon="S"] strong::before {
  content: "";
  width: 18px;
  height: 18px;
  border: 2px solid var(--gold);
  border-radius: 999px;
}

.deliverable-item[data-ui-icon="S"] strong::after {
  content: "";
  position: absolute;
  left: 18px;
  top: 16px;
  width: 8px;
  height: 2px;
  background: var(--gold);
  transform: rotate(45deg);
}

.deliverable-item[data-ui-icon="F"] strong::before {
  content: "";
  border: 0;
  background: var(--gold);
  clip-path: polygon(8% 18%, 92% 18%, 62% 54%, 62% 84%, 38% 84%, 38% 54%);
}

.deliverable-item span {
  display: block;
  margin-top: 7px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.52;
}

.submodule-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 20px 0 0;
}

.submodule {
  padding: 20px;
  background: var(--white);
}

.submodule strong {
  display: block;
  color: var(--ink);
}

.submodule p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.add-on-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.add-on-grid div {
  min-height: 160px;
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.add-on-grid strong {
  display: block;
  color: var(--ink);
}

.add-on-grid span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.timeline {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  border-top: 1px solid var(--line);
}

.timeline li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 64px minmax(180px, 0.42fr) 1fr;
  gap: 24px;
  align-items: start;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.timeline li::before {
  content: counter(step, decimal-leading-zero);
  color: var(--gold);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.timeline strong {
  color: var(--ink);
}

.timeline span {
  color: var(--muted);
}

@media (max-width: 980px) {
  .nav {
    grid-template-columns: auto auto 1fr;
  }

  .menu {
    display: block;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 16px 24px;
    border-top: 1px solid var(--line);
  }

  .nav-links a.active::after {
    display: none;
  }

  .nav-action {
    justify-self: end;
    padding-inline: 18px;
  }

  .intro-grid,
  .page-head,
  .catalogue-shell,
  .detail-grid,
  .proposal-hero,
  .proposal-shell {
    grid-template-columns: 1fr;
  }

  .proposal-sidebar {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .side-step {
    min-height: 36px;
    border: 1px solid var(--line);
    padding: 8px 12px;
  }

  .module-overview,
  .add-on-grid,
  .proposal-reader-guide,
  .deliverable-grid,
  .submodule-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .module-explainer {
    grid-template-columns: 1fr;
  }

  .collection-grid {
    grid-template-columns: 1fr;
  }

  .collection-tile.large,
  .collection-tile.wide {
    grid-row: auto;
    grid-column: auto;
    min-height: 430px;
  }

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

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

  .metric:nth-child(3) {
    border-left: 0;
  }

  .filters {
    position: static;
  }

  .cta,
  .footer {
    grid-template-columns: 1fr;
  }

  .cta {
    display: grid;
  }
}

@media (max-width: 640px) {
  .nav {
    padding-inline: 16px;
  }

  .brand {
    font-size: 17px;
  }

  .nav-action {
    display: none;
  }

  .hero {
    min-height: 670px;
  }

  .hero-inner {
    width: min(100% - 32px, var(--max));
    padding: 70px 0 110px;
  }

  h1 {
    font-size: 40px;
  }

  h2 {
    font-size: 32px;
  }

  .section,
  .page-head,
  .catalogue-shell,
  .detail-grid,
  .cta,
  .proposal-hero,
  .proposal-shell {
    width: min(100% - 32px, var(--max));
  }

  .section,
  .light-band .section,
  .black-section .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .image-pair,
  .product-grid,
  .metric-row {
    grid-template-columns: 1fr;
  }

  .image-pair img:first-child {
    margin-top: 0;
  }

  .gold-note {
    width: 100%;
    margin: 0;
  }

  .section-title {
    display: grid;
  }

  .collection-tile,
  .collection-tile.large,
  .collection-tile.wide {
    min-height: 340px;
    padding: 24px;
  }

  .specs {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .metric + .metric {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
  }

  .cta,
  .detail-card,
  .form,
  .proposal-panel,
  .proposal-module {
    padding: 28px;
  }

  .module-overview,
  .add-on-grid,
  .proposal-reader-guide,
  .deliverable-grid,
  .submodule-grid {
    grid-template-columns: 1fr;
  }

  .module-card {
    min-height: auto;
  }

  .deliverable-list summary {
    grid-template-columns: minmax(0, 1fr) 32px;
    gap: 6px;
    padding: 16px 0;
  }

  .deliverable-list summary span,
  .deliverable-list summary b {
    grid-column: 1;
  }

  .deliverable-list summary::after {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-self: center;
  }

  .deliverable-list ul {
    margin-left: 0;
  }

  .detail-copy,
  .deliverable-grid {
    margin-left: 0;
  }

  .metric.light + .metric.light {
    border-left: 0;
  }

  .timeline li {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .fact-list div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .footer {
    padding-inline: 16px;
  }
}