/* ============================================================
   CROMO DETAIL CO. — design system
   Two worlds: black canvas / white studio. Chrome is the only pigment.
   Type: Archivo (wide, heavy) display · Space Grotesk body
   ============================================================ */

:root {
  --black: #0b0b0c;
  --carbon: #141417;
  --line-dark: #26272b;
  --white: #fafafb;
  --paper: #f0f0f3;
  --line-light: #dcdce1;
  --ink: #161719;
  --silver: #a6a9b0;
  --slate: #5c5f66;

  --chrome-hi: #f5f6f8;
  --chrome-mid: #c9ccd3;
  --chrome-low: #878b93;
  --chrome-deep: #565961;

  --grad-chrome: linear-gradient(108deg,
      var(--chrome-deep) 0%,
      var(--chrome-mid) 22%,
      var(--chrome-hi) 38%,
      var(--chrome-mid) 52%,
      var(--chrome-low) 70%,
      var(--chrome-mid) 88%,
      var(--chrome-deep) 100%);

  --font-display: "Archivo", "Arial Black", sans-serif;
  --font-body: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;

  --w: min(1120px, calc(100% - 2 * clamp(20px, 5vw, 48px)));
  --pad-band: clamp(76px, 12vw, 148px);
  --r: 2px;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  background: var(--black);
  color: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--chrome-mid); outline-offset: 3px; }

/* ---------- type ---------- */
.display {
  font-family: var(--font-display);
  font-stretch: 118%;
  font-weight: 860;
  text-transform: uppercase;
  letter-spacing: 0.005em;
  line-height: 0.96;
  margin: 0;
}
h1.display { font-size: clamp(44px, 10.5vw, 118px); }
h2.display { font-size: clamp(30px, 5.6vw, 58px); }
h3.display { font-size: clamp(21px, 3vw, 28px); font-stretch: 112%; font-weight: 800; }

.eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  margin: 0 0 clamp(14px, 2.5vw, 22px);
}
.band--black .eyebrow { color: var(--silver); }
.band--white .eyebrow { color: var(--slate); }

.lede { font-size: clamp(17px, 2.2vw, 20px); line-height: 1.6; max-width: 34em; }
p { margin: 0 0 1em; }
.muted { color: var(--silver); }
.band--white .muted { color: var(--slate); }

/* Chrome text — the signature */
.chrome {
  background: var(--grad-chrome);
  background-size: 220% 100%;
  background-position: 50% 0;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.sheen { animation: sheen 7s ease-in-out infinite; }
@keyframes sheen {
  0%, 100% { background-position: 12% 0; }
  50% { background-position: 88% 0; }
}

/* ---------- structure ---------- */
.wrap { width: var(--w); margin: 0 auto; }
.band { padding-block: var(--pad-band); }
.band--black { background: var(--black); color: var(--white); }
.band--white { background: var(--white); color: var(--ink); }

.rule-chrome {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, transparent, var(--chrome-low) 18%, var(--chrome-hi) 50%, var(--chrome-low) 82%, transparent);
}

.band-head { margin-bottom: clamp(38px, 6vw, 64px); }
.band-head .lede { margin-top: 18px; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 11, 12, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line-dark);
  color: var(--white);
}
.nav-in {
  width: var(--w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 64px;
}
.logo {
  font-family: var(--font-display);
  font-stretch: 120%;
  font-weight: 860;
  font-size: 17px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
}
.logo .co { color: var(--silver); font-weight: 700; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a:not(.btn) {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--silver);
  transition: color 0.2s ease;
}
.nav-links a:not(.btn):hover, .nav-links a:not(.btn)[aria-current="page"] { color: var(--white); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
  color: var(--white);
  font: 500 12px/1 var(--font-body);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 10px 14px;
  cursor: pointer;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 15px 26px;
  border-radius: var(--r);
  border: 1px solid transparent;
  transition: transform 0.15s ease, opacity 0.2s ease;
}
.btn:active { transform: translateY(1px); }
.btn-chrome {
  background: linear-gradient(180deg,
      #f8f9fb 0%,
      #e3e5ea 42%,
      #a6aab2 50%,
      #ced1d7 58%,
      #f1f2f5 100%);
  color: #0b0b0c;
  font-weight: 700;
  border-color: #9ba0a8;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.85), inset 0 -1px 0 rgba(0,0,0,0.18);
}
.btn-chrome:hover { filter: brightness(1.06); }
.btn-ink { background: var(--ink); color: var(--white); }
.btn-ink:hover { opacity: 0.86; }
.btn-ghost-dark { border-color: var(--line-dark); color: var(--white); }
.btn-ghost-dark:hover { border-color: var(--chrome-low); }
.btn-ghost-light { border-color: var(--line-light); color: var(--ink); }
.btn-ghost-light:hover { border-color: var(--chrome-deep); }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: clamp(26px, 4vw, 38px); }

/* ---------- hero ---------- */
.hero { padding-block: clamp(96px, 16vw, 190px) var(--pad-band); }
.hero .eyebrow { color: var(--silver); }
.hero-tag {
  margin-top: clamp(22px, 3.5vw, 32px);
  font-size: clamp(15px, 2vw, 18px);
  letter-spacing: 0.30em;
  text-transform: uppercase;
  color: var(--silver);
}
.hero-tag b { color: var(--white); font-weight: 600; }

/* ---------- principle list (white manifesto) ---------- */
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(38px, 6vw, 60px);
}
.principle { border-top: 1px solid var(--line-light); padding-top: 20px; }
.principle h3 {
  margin: 0 0 8px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}
.principle p { margin: 0; color: var(--slate); font-size: 15.5px; }

/* ---------- tier cards ---------- */
.tiers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.5vw, 26px);
}
.tier {
  position: relative;
  background: var(--carbon);
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
  padding: clamp(26px, 3.5vw, 36px);
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.tier::before {
  content: "";
  position: absolute;
  inset: -1px -1px auto -1px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--chrome-hi), transparent);
}
.tier h3 { margin: 0; }
.tier .from {
  font-family: var(--font-display);
  font-stretch: 112%;
  font-weight: 800;
  font-size: clamp(26px, 3vw, 32px);
}
.tier .from small {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--silver);
  display: block;
  margin-bottom: 6px;
}
.tier p { color: var(--silver); font-size: 15px; margin: 0; flex: 1; }
.tier .tier-link {
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--chrome-mid);
}
.tier .tier-link:hover { color: var(--chrome-hi); }

/* ---------- sequence (process) ---------- */
.seq { counter-reset: step; display: grid; gap: 0; }
.seq-item {
  counter-increment: step;
  display: grid;
  grid-template-columns: 84px 1fr;
  gap: clamp(18px, 3vw, 34px);
  padding-block: clamp(22px, 3.5vw, 32px);
  border-top: 1px solid var(--line-light);
}
.seq-item:last-child { border-bottom: 1px solid var(--line-light); }
.seq-item::before {
  content: "0" counter(step);
  font-family: var(--font-display);
  font-stretch: 118%;
  font-weight: 860;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1;
  background: linear-gradient(160deg, var(--chrome-deep), var(--chrome-mid) 60%, var(--chrome-low));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.seq-item h3 { margin: 0 0 6px; }
.seq-item p { margin: 0; color: var(--slate); max-width: 46em; }
.seq-item .chem {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--chrome-deep);
}

/* ---------- rig spec ---------- */
.spec-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2.5vw, 26px);
  margin-top: clamp(34px, 5vw, 52px);
}
.spec {
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
  padding: 22px;
  background: var(--carbon);
}
.spec h3 {
  margin: 0 0 6px;
  font-family: var(--font-body);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--chrome-mid);
}
.spec p { margin: 0; color: var(--silver); font-size: 15px; }

/* ---------- gallery ---------- */
.g-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(12px, 2vw, 20px);
}
.g-slot {
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line-dark);
  border-radius: var(--r);
  background:
    linear-gradient(160deg, #17171a 0%, #0e0e10 60%, #141417 100%);
  display: grid;
  place-items: center;
  overflow: hidden;
}
.g-slot img { width: 100%; height: 100%; object-fit: cover; }
.g-slot span {
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--chrome-deep);
}

/* ---------- pricing tables ---------- */
.price-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.price-table th, .price-table td {
  text-align: left;
  padding: 14px 12px;
  border-bottom: 1px solid var(--line-light);
  font-size: 15.5px;
}
.price-table th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}
.price-table td:last-child { text-align: right; font-weight: 600; }
.tier-block { margin-bottom: clamp(44px, 7vw, 72px); }
.tier-block > p { color: var(--slate); max-width: 44em; }
.note {
  font-size: 14px;
  color: var(--slate);
  border-left: 2px solid var(--chrome-mid);
  padding-left: 14px;
}

/* ---------- FAQ ---------- */
.faq-item { border-top: 1px solid var(--line-light); padding-block: 8px; }
.faq-item:last-child { border-bottom: 1px solid var(--line-light); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding-block: 16px;
  font-weight: 600;
  font-size: 16.5px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 22px;
  color: var(--chrome-deep);
  transition: transform 0.2s ease;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item .faq-a { padding: 0 0 18px; color: var(--slate); max-width: 46em; }
.faq-item .faq-a p { margin: 0 0 0.7em; }

/* ---------- story ---------- */
.prose { max-width: 42em; }
.prose p { color: var(--slate); }
.band--black .prose p { color: var(--silver); }
.prose .big {
  font-size: clamp(19px, 2.6vw, 24px);
  line-height: 1.5;
  color: var(--ink);
}
.band--black .prose .big { color: var(--white); }

/* ---------- final CTA / footer ---------- */
.cta-final { text-align: left; }
.contact-lines { margin-top: clamp(28px, 4vw, 40px); display: grid; gap: 10px; }
.contact-lines a {
  text-decoration: none;
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 500;
}
.contact-lines a:hover { color: var(--chrome-hi); }
.contact-lines span {
  display: block;
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--slate);
  margin-bottom: 2px;
}

.footer {
  border-top: 1px solid var(--line-dark);
  padding: 34px 0 44px;
  background: var(--black);
  color: var(--silver);
  font-size: 13px;
}
.footer-in {
  width: var(--w);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  align-items: center;
}
.footer a { color: var(--silver); text-decoration: none; }
.footer a:hover { color: var(--white); }
.footer .tm { letter-spacing: 0.06em; }

/* ---------- reveal ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .tiers, .spec-grid, .principles { grid-template-columns: 1fr; }
  .g-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links {
    position: fixed;
    inset: 64px 0 auto 0;
    background: rgba(11, 11, 12, 0.97);
    border-bottom: 1px solid var(--line-dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 26px clamp(20px, 5vw, 48px) 34px;
    gap: 22px;
    transform: translateY(-130%);
    transition: transform 0.28s ease;
  }
  body.nav-open .nav-links { transform: none; }
  .nav-toggle { display: inline-block; }
  .seq-item { grid-template-columns: 58px 1fr; }
}
@media (max-width: 480px) {
  .g-grid { grid-template-columns: 1fr; }
}

/* ---------- motion safety ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sheen { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .nav-links { transition: none; }
}