/* Assemble Watch — landing
 *
 * Stesso sistema di watch-configurator: la platina di un movimento sotto
 * luce piena, scala graduata, un solo verde funzionale. Vedi
 * ../watch-configurator/DESIGN.md per il perché di ogni scelta.
 */

:root {
  /* Palette di marca: neutri quieti, accenti materici.
   * Graphite e Workshop Green portano il peso; Steel e Gold compaiono
   * soltanto dove c'è un materiale da nominare. */
  --graphite: #252d31;
  --green: #0e6244;
  --green-deep: #0a4c35;
  --steel: #aeb7ba;
  --gold: #b7923e;
  --cream: #f2f1ec;

  /* Scala neutra della platina, invariata dal configuratore. */
  --ground: oklch(96.4% 0.004 210);
  --ground-2: oklch(93.4% 0.005 210);
  --ground-3: oklch(89.6% 0.006 210);
  --ink: var(--graphite);
  --ink-2: oklch(47% 0.011 250);
  --ink-3: oklch(63% 0.009 250);
  --rule: oklch(87.5% 0.006 210);
  --rule-2: oklch(79% 0.008 210);
  --accent: var(--green);

  --sans: 'Segoe UI Variable Display', 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial,
    sans-serif;
  --tech: ui-monospace, 'Cascadia Mono', Consolas, 'SF Mono', Menlo, monospace;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --pad: clamp(20px, 5vw, 72px);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.9375rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

main { overflow-x: clip; }

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

::selection { background: color-mix(in oklch, var(--accent) 22%, transparent); }

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

/* rivelazione all'ingresso: 500ms, scaglionata via JS */
[data-kin] {
  opacity: 0;
  transform: translateY(14px);
}
[data-kin].is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
  transition-delay: var(--d, 0ms);
}

/* ═══ Testata ══════════════════════════════════════════════════════════════ */

.top {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px var(--pad);
  /* fondo pieno: la platina non è vetro, e in trasparenza si leggeva
   * il testo che scorreva sotto */
  background: var(--ground);
  border-bottom: 1px solid var(--rule);
}
.top__mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.0625rem;
  font-weight: 400;
  letter-spacing: -0.015em;
}
.top__mark .mark { height: 1.05em; }

.top__nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 26px);
  font-size: 0.8125rem;
}

/* al passaggio il link prende una graduazione, non la sottolineatura */
.top__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--ink-2);
  transition: color 0.22s var(--ease);
}
.top__link::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: 8px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.24s var(--ease);
}
.top__link:hover { color: var(--ink); }
.top__link:hover::after { transform: scaleX(1); }

.top__cta {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 40px;
  margin-left: clamp(2px, 0.8vw, 10px);
  padding: 0 18px;
  background: var(--green);
  color: var(--cream);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: background 0.22s var(--ease);
}
.top__cta:hover { background: var(--green-deep); }
.top__cta::after {
  content: '→';
  transition: transform 0.24s var(--ease);
}
.top__cta:hover::after { transform: translateX(3px); }

/* ═══ Bottoni ══════════════════════════════════════════════════════════════ */

.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 26px;
  border: 1px solid transparent;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease), color 0.22s var(--ease);
}
.btn--primary {
  background: var(--accent);
  color: var(--cream);
}
.btn--primary:hover { background: var(--green-deep); }
.btn--ghost {
  border-color: var(--rule-2);
  background: var(--ground-2);
  color: var(--ink);
}
.btn--ghost:hover { border-color: var(--ink-3); background: var(--ground-3); }
/* sui pannelli verdi il rapporto si inverte: la carta diventa il pieno */
.btn--light {
  background: var(--cream);
  color: var(--green);
}
.btn--light:hover { background: color-mix(in oklab, var(--cream) 62%, #ffffff); }

/* ═══ Scala graduata di separazione (minute track) ═════════════════════════ */

.track {
  height: 14px;
  margin: 0 var(--pad);
  background:
    repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px 12px) 0 100% / 100% 6px no-repeat,
    repeating-linear-gradient(90deg, var(--rule-2) 0 1px, transparent 1px 60px) 0 100% / 100% 14px no-repeat;
}

/* ═══ Hero ═════════════════════════════════════════════════════════════════ */

.hero {
  max-width: 1580px;
  margin-inline: auto;
  padding: clamp(44px, 6vw, 88px) var(--pad) clamp(48px, 6vw, 88px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(36px, 6vw, 96px);
}

.hero__count {
  margin: 0 0 16px;
  color: var(--ink-3);
  font-family: var(--tech);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
}
.hero__title {
  margin: 0;
  max-width: 14ch;
  font-size: clamp(2.6rem, 6vw, 5.6rem);
  font-weight: 300;
  line-height: 0.94;
  letter-spacing: -0.045em;
}
.hero__lede {
  margin: 24px 0 0;
  color: var(--ink-2);
  max-width: 56ch;
  font-size: clamp(0.9375rem, 1.15vw, 1.0625rem);
}
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero__art { min-width: 0; }
.hero__plate {
  position: relative;
  aspect-ratio: 4 / 5;
  max-height: min(72vh, 640px);
  margin-inline: auto;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), var(--rule) 50%, transparent calc(50% + 0.5px)),
    radial-gradient(68% 58% at 50% 40%, oklch(98.2% 0.003 210) 0%, var(--ground-2) 100%);
  overflow: hidden;
}
.hero__plate::after {
  content: '';
  position: absolute;
  inset: 14px;
  border-top: 1px solid color-mix(in oklch, var(--rule-2) 55%, transparent);
  border-bottom: 1px solid color-mix(in oklch, var(--rule-2) 55%, transparent);
  pointer-events: none;
}
.hero__stack {
  position: absolute;
  inset: 0;
  transition: transform 0.26s var(--ease);
  will-change: transform;
}
.hero__stack img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 4% 0;
}
.hero__ref {
  margin: 14px 0 0;
  text-align: center;
  color: var(--ink-3);
  font-family: var(--tech);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
}

/* ═══ Anatomia ═════════════════════════════════════════════════════════════ */

.anatomy {
  max-width: 1580px;
  margin-inline: auto;
  padding: clamp(48px, 7vw, 104px) var(--pad);
}
.anatomy__head { max-width: 720px; }
.anatomy__head h2,
.finish__head h2,
.contact__intro h2 {
  margin: 0;
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 300;
  line-height: 1.02;
  letter-spacing: -0.035em;
}
.anatomy__head p,
.finish__head p {
  margin: 14px 0 0;
  color: var(--ink-2);
  max-width: 52ch;
}

.anatomy__scene {
  display: grid;
  grid-template-columns: minmax(180px, 260px) minmax(0, 1fr) minmax(200px, 300px);
  align-items: center;
  gap: clamp(24px, 4vw, 64px);
  margin-top: clamp(28px, 4vw, 56px);
}

/* graduazioni: la voce attiva prende la tacca lunga e l'accento */
.anatomy__steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
  font-family: var(--tech);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
}
.anatomy__steps button {
  appearance: none;
  background: none;
  border: 0;
  padding: 11px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-3);
  cursor: pointer;
  text-align: left;
  transition: color 0.22s var(--ease);
  min-height: 44px;
}
.anatomy__steps .tick {
  width: 16px;
  height: 1px;
  background: var(--rule-2);
  transition: width 0.22s var(--ease), background 0.22s var(--ease);
}
.anatomy__steps button:hover { color: var(--ink-2); }
.anatomy__steps button.is-active { color: var(--ink); }
.anatomy__steps button.is-active .tick {
  width: 30px;
  background: var(--accent);
}

.stage {
  position: relative;
  aspect-ratio: 4 / 5;
  max-height: min(70vh, 620px);
  margin-inline: auto;
  width: 100%;
  max-width: 520px;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), var(--rule) 50%, transparent calc(50% + 0.5px)),
    radial-gradient(68% 58% at 50% 40%, oklch(98.2% 0.003 210) 0%, var(--ground-2) 100%);
}
.stage::after {
  content: '';
  position: absolute;
  inset: 14px;
  border-top: 1px solid color-mix(in oklch, var(--rule-2) 55%, transparent);
  border-bottom: 1px solid color-mix(in oklch, var(--rule-2) 55%, transparent);
  pointer-events: none;
}
.layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 4% 0;
  transition: opacity 0.42s var(--ease), filter 0.42s var(--ease);
}
.layer.is-ghost { opacity: 0.16; filter: grayscale(1); }
.stage.is-caliber .layer { opacity: 0.06; filter: grayscale(1); }

/* calibro NH35: disegno tecnico nei toni della platina */
.caliber {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 26px;
  opacity: 0;
  transform: scale(0.96);
  transition: opacity 0.42s var(--ease), transform 0.62s var(--ease);
  pointer-events: none;
}
.stage.is-caliber .caliber { opacity: 1; transform: scale(1); }

.cal-draw {
  position: relative;
  width: min(58%, 300px);
  aspect-ratio: 1;
}
.cal-draw i { position: absolute; border-radius: 50%; }
.cal-plate { inset: 0; border: 1px solid var(--rule-2); background: radial-gradient(circle at 36% 30%, oklch(98.2% 0.003 210), transparent 60%); }
.cal-plate::after {
  content: '';
  position: absolute;
  right: -1px; top: 50%;
  width: 7%; height: 12%;
  transform: translateY(-50%);
  border: 1px solid var(--rule-2);
  border-right: none;
  border-radius: 6px 0 0 6px;
}
.cal-bridge { inset: 12%; border: 1px dashed var(--rule); }
.cal-barrel { width: 34%; height: 34%; right: 16%; bottom: 14%; border: 1px solid var(--rule-2); }
.cal-barrel::after { content: ''; position: absolute; inset: 26%; border-radius: 50%; border: 1px solid var(--rule); }
.cal-balance {
  width: 30%; height: 30%;
  left: 12%; top: 24%;
  border: 1px solid var(--accent);
  animation: balance 1.4s ease-in-out infinite alternate;
}
.cal-balance::before, .cal-balance::after {
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  width: 100%; height: 1px;
  background: color-mix(in oklch, var(--accent) 55%, transparent);
}
.cal-balance::before { transform: translate(-50%, -50%) rotate(45deg); }
.cal-balance::after { transform: translate(-50%, -50%) rotate(-45deg); }
@keyframes balance { from { transform: rotate(-14deg); } to { transform: rotate(14deg); } }
.cal-rotor { inset: 6%; animation: rotor 26s linear infinite; }
.cal-rotor::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid var(--rule-2);
  clip-path: polygon(0 50%, 100% 50%, 100% 100%, 0 100%);
}
.cal-rotor::after {
  /* rubino centrale: l'unico oro del disegno tecnico */
  content: '';
  position: absolute;
  left: 50%; top: 50%;
  width: 12%; height: 12%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid var(--gold);
  background: color-mix(in oklab, var(--gold) 22%, transparent);
}
@keyframes rotor { to { transform: rotate(360deg); } }
.cal-stem {
  left: 99%; top: 50%;
  width: 26%; height: 1px;
  border-radius: 0;
  background: repeating-linear-gradient(90deg, var(--rule-2) 0 2px, transparent 2px 4px);
}
.cal-type { display: grid; gap: 8px; text-align: center; }
.cal-name {
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 300;
  letter-spacing: 0.04em;
  line-height: 1;
}
.cal-specs {
  font-family: var(--tech);
  font-size: 0.6875rem;
  color: var(--ink-3);
  font-variant-numeric: tabular-nums;
}

/* foto reale del calibro (assets/datejust/05-calibro.png) */
.cal-plate-photo {
  width: min(70%, 340px);
  margin: 0;
  background: oklch(98.2% 0.003 210);
  border: 1px solid var(--rule);
  padding: 6% 6% 4%;
}
.cal-plate-photo img { display: block; width: 100%; mix-blend-mode: multiply; }
.cal-plate-photo figcaption {
  margin-top: 10px;
  text-align: center;
  font-family: var(--tech);
  font-size: 0.625rem;
  color: var(--ink-3);
}
.caliber.has-photo .cal-draw { display: none; }

.anatomy__info { transition: opacity 0.42s var(--ease); }
.anatomy__info.is-hidden { opacity: 0; }
.anatomy__count {
  font-family: var(--tech);
  font-size: clamp(2.4rem, 5vw, 4.4rem);
  font-weight: 300;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  line-height: 1;
}
.anatomy__copy {
  margin: 14px 0 0;
  color: var(--ink-2);
  font-size: 0.9375rem;
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}
.anatomy__copy.is-swapping { opacity: 0; transform: translateY(6px); }

/* ═══ Collezione ═══════════════════════════════════════════════════════════ */

.collection {
  max-width: 1580px;
  margin-inline: auto;
  padding: clamp(48px, 7vw, 104px) var(--pad) clamp(64px, 8vw, 128px);
}

/* Lastre, non schede: nessuna scatola attorno ai modelli.
 * Sfalsamento alternato: rompe la griglia di schede tutte uguali. */
.plates {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(44px, 5vw, 76px) clamp(20px, 2.8vw, 44px);
}
.plate {
  display: grid;
  grid-template-rows: auto auto auto auto 1fr;
  min-width: 0;
}
@media (min-width: 1025px) {
  .plate:nth-child(3n + 2) { margin-top: clamp(24px, 3vw, 56px); }
}
@media (min-width: 641px) and (max-width: 1024px) {
  .plate:nth-child(2n) { margin-top: clamp(20px, 3vw, 44px); }
}
.plate__art {
  position: relative;
  aspect-ratio: 4 / 5;
  display: block;
  background:
    linear-gradient(90deg, transparent calc(50% - 0.5px), var(--rule) 50%, transparent calc(50% + 0.5px)),
    radial-gradient(68% 58% at 50% 40%, oklch(98.2% 0.003 210) 0%, var(--ground-2) 100%);
  overflow: hidden;
}
.plate__art::after {
  content: '';
  position: absolute;
  inset: 14px;
  border-top: 1px solid color-mix(in oklch, var(--rule-2) 55%, transparent);
  border-bottom: 1px solid color-mix(in oklch, var(--rule-2) 55%, transparent);
  pointer-events: none;
}
.plate__art img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 3% 0;
  transition: transform 0.7s var(--ease);
}
.plate:hover .plate__art img { transform: scale(1.05); }

/* numerale watermark dietro l'orologio */
.plate__num {
  position: absolute;
  top: 2px;
  left: 12px;
  font-size: clamp(4.5rem, 8vw, 7.5rem);
  font-weight: 200;
  line-height: 1;
  letter-spacing: -0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--ground-3);
  transition: color 0.42s var(--ease);
  user-select: none;
}
.plate:hover .plate__num { color: var(--rule-2); }

/* al passaggio il quadrante cambia: dissolvenza 420ms, come i layer
 * del configuratore */
.plate__art img.swap { opacity: 0; transition: opacity 0.42s var(--ease), transform 0.7s var(--ease); }
.plate:hover .plate__art img.swap { opacity: 1; }
.plate__no {
  font-family: var(--tech);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-3);
  padding: 13px 0 0;
  border-top: 1px solid var(--rule);
  margin-top: 14px;
  transition: color 0.22s var(--ease), border-color 0.22s var(--ease);
}
.plate:hover .plate__no { color: var(--accent); border-top-color: var(--rule-2); }
.plate__name {
  font-size: clamp(1.25rem, 1.7vw, 1.5rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-top: 6px;
}
.plate__blurb {
  color: var(--ink-2);
  font-size: 0.8125rem;
  line-height: 1.65;
  margin-top: 6px;
  max-width: 34ch;
}
.plate__name { margin: 6px 0 0; }
.plate__mix {
  font-family: var(--tech);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-3);
  margin-top: 10px;
  transition: color 0.22s var(--ease);
}
.plate:hover .plate__mix { color: var(--ink-2); }

/* ═══ Finiture ═════════════════════════════════════════════════════════════ */

.finish {
  max-width: 1580px;
  margin-inline: auto;
  padding: clamp(48px, 7vw, 104px) var(--pad);
}
.finish__list { margin-top: clamp(24px, 3.5vw, 44px); display: grid; }
.finish__row {
  display: grid;
  grid-template-columns: 56px 20px minmax(0, 1fr) auto;
  gap: 22px;
  align-items: baseline;
  padding: 18px 0;
  border-top: 1px solid var(--rule);
  transition: padding-left 0.22s var(--ease);
}
/* il campione è il materiale, non una decorazione: prende il colore dalla riga */
.finish__chip {
  width: 20px;
  height: 20px;
  align-self: center;
  background: var(--chip, var(--steel));
  border: 1px solid color-mix(in oklab, var(--graphite) 18%, transparent);
}
.finish__row:last-child { border-bottom: 1px solid var(--rule); }
.finish__row:hover { padding-left: 14px; }
.finish__row:hover .finish__name { color: var(--accent); }
.finish__id {
  font-family: var(--tech);
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-3);
}
.finish__name {
  font-size: clamp(1.1rem, 1.8vw, 1.5rem);
  letter-spacing: -0.02em;
  transition: color 0.22s var(--ease);
}
.finish__note {
  font-family: var(--tech);
  font-size: 0.6875rem;
  color: var(--ink-3);
  text-align: right;
}

/* ═══ Richiesta ════════════════════════════════════════════════════════════ */

.contact {
  max-width: 1580px;
  margin-inline: auto;
  padding: clamp(48px, 7vw, 104px) var(--pad);
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(36px, 6vw, 96px);
  align-items: start;
}
.contact__intro p {
  margin: 16px 0 0;
  color: var(--ink-2);
  max-width: 46ch;
}
.contact__meta {
  font-family: var(--tech);
  font-size: 0.6875rem !important;
  color: var(--ink-3) !important;
}

form { display: grid; gap: 18px; }
.field { display: grid; gap: 6px; }
.field label { font-size: 0.8125rem; color: var(--ink-2); }
input, textarea {
  padding: 12px 14px;
  background: oklch(98.2% 0.003 210);
  border: 1px solid var(--rule-2);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 0.9375rem;
  outline: none;
  resize: vertical;
  border-radius: 0;
  transition: border-color 0.22s var(--ease);
  min-height: 44px;
}
input:focus, textarea:focus { border-color: var(--accent); }
input:focus-visible, textarea:focus-visible { outline: none; }
form .btn { justify-self: start; margin-top: 6px; }
.form-note {
  margin: 0;
  min-height: 1.2em;
  font-family: var(--tech);
  font-size: 0.6875rem;
  color: var(--accent);
}

/* ═══ Marchio ══════════════════════════════════════════════════════════════
 * Due moduli identici, rotazione 180°, un innesto. Le due facce prendono
 * il colore da --mark-a / --mark-b, così lo stesso <symbol> serve sia il
 * fondo chiaro sia i pannelli verdi. */

.svg-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}
.mark {
  display: block;
  flex: none;
  width: auto;
  height: 1.1em;
  aspect-ratio: 300 / 210;
}
.mark--light { --mark-a: var(--cream); --mark-b: var(--cream); }

/* ═══ Promessa ═════════════════════════════════════════════════════════════ */

.promise { background: var(--green); color: var(--cream); }
.promise__inner {
  max-width: 1580px;
  margin-inline: auto;
  padding: clamp(56px, 8vw, 124px) var(--pad);
  display: grid;
  justify-items: start;
  gap: clamp(26px, 3.5vw, 44px);
}
.promise__mark { height: clamp(32px, 4vw, 50px); }
.promise__line {
  margin: 0;
  max-width: 16ch;
  font-size: clamp(2.1rem, 5.4vw, 4.2rem);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: -0.04em;
}
.promise__foot {
  margin: 0;
  width: min(100%, 460px);
  padding-top: 20px;
  border-top: 1px solid color-mix(in oklab, var(--cream) 32%, transparent);
  font-family: var(--tech);
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: color-mix(in oklab, var(--cream) 74%, transparent);
}

/* ═══ Certificato ══════════════════════════════════════════════════════════ */

.cert {
  margin: clamp(28px, 4vw, 44px) 0 0;
  max-width: 460px;
  padding: clamp(20px, 2.4vw, 30px);
  background: var(--cream);
  border: 1px solid var(--rule);
}
.cert__head { display: flex; align-items: center; gap: 10px; }
.cert__head .mark { height: 1.35em; }
.cert__brand { font-size: 1.0625rem; letter-spacing: -0.015em; }
.cert__kicker {
  margin: 20px 0 0;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--rule);
  font-family: var(--tech);
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.cert__row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-top: 16px;
}
.cert__ref {
  margin: 0;
  font-family: var(--tech);
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
}
.cert__spec { margin: 6px 0 0; color: var(--ink-2); font-size: 0.8125rem; }
.cert__seal { width: 34px; height: 34px; flex: none; background: var(--green); }

/* ═══ Piede ════════════════════════════════════════════════════════════════ */

.foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px 32px;
  flex-wrap: wrap;
  max-width: 1580px;
  margin-inline: auto;
  padding: 26px var(--pad) 48px;
  border-top: 1px solid var(--rule);
  color: var(--ink-3);
  font-size: 0.8125rem;
}
.foot a { color: var(--ink-2); }
.foot a:hover { color: var(--ink); }
.foot__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink) !important;
  font-size: 0.9375rem;
  letter-spacing: -0.015em;
}
.foot__tag {
  font-family: var(--tech);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ═══ Responsive ═══════════════════════════════════════════════════════════ */

@media (max-width: 1024px) {
  .plates { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; }
  .hero__art { order: -1; }
  .hero__plate { max-height: 52vh; }
  .anatomy__scene {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .anatomy__steps {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    gap: 18px;
    padding-bottom: 6px;
  }
  .anatomy__steps button { padding: 8px 0; }
  .contact { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .plates { grid-template-columns: 1fr; }
  .top__link { display: none; }
  .top__cta { min-height: 44px; }
  .finish__row { grid-template-columns: 40px 18px minmax(0, 1fr); gap: 14px; }
  .finish__note { grid-column: 3; text-align: left; }
  .cert__row { flex-wrap: wrap; }
}

/* ═══ Reduced motion ═══════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  [data-kin] { opacity: 1; transform: none; }
  .hero__stack { transition: none; }
}