/* Eichler 3D — baseado nos tokens do design system (tokens.json) */
:root {
  --yellow: #FFE58E;
  --yellow-hover: #FFEC00;
  --surface: #F9F9F9;
  --white: #FFFFFF;
  --black: #000000;
  --fg: #333333;
  --muted: #6b6b6b;
  --border: #264658;
  --input: #CCCCCC;
  --input-focus: #999999;
  --wa: #1fa855;
  --wa-hover: #188c46;

  --sans: "Bricolage Grotesque", system-ui, -apple-system, "Segoe UI", sans-serif;

  --r-img: 8px;
  --r-card: 12px;
  --r-panel: 16px;
  --r-nav: 20px;
  --r-pill: 9999px;

  --ease: cubic-bezier(.4, 0, .2, 1);
  --t: 200ms;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  background: var(--white);
  color: var(--fg);
  font: 400 15px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
img { -webkit-user-drag: none; user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; }
h1, h2, h3, p, ol, dl, dd { margin: 0; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
:focus-visible { outline: 2px solid var(--black); outline-offset: 3px; }
::selection { background: var(--black); color: var(--yellow); }

/* ---------- Rolagem ---------- */
html.lenis, html.lenis body { height: auto; }
.lenis.lenis-smooth { scroll-behavior: auto !important; }
.lenis.lenis-smooth [data-lenis-prevent] { overscroll-behavior: contain; }
.lenis.lenis-stopped { overflow: hidden; }

html { scrollbar-width: thin; scrollbar-color: var(--yellow) var(--white); }
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--white); border-left: 1px dashed rgba(38,70,88,.35); }
::-webkit-scrollbar-thumb {
  background: var(--yellow);
  border: 3px solid var(--white);
  border-radius: 99px;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,.55);
}
::-webkit-scrollbar-thumb:hover { background: var(--yellow-hover); }
::-webkit-scrollbar-thumb:active { background: var(--black); }
::-webkit-scrollbar-corner { background: var(--white); }

.progress {
  position: fixed; top: 0; left: 0; z-index: 100;
  width: 100%; height: 3px;
  background: var(--yellow-hover);
  transform-origin: 0 50%;
  transform: scaleX(0);
  pointer-events: none;
}
[hidden] { display: none !important; }

/* ---------- Layout ---------- */
.container { width: min(1140px, 100% - 32px); margin-inline: auto; }
.container--narrow { width: min(760px, 100% - 32px); }
.section { padding: 80px 0; }
.section--gray { background: var(--surface); }
.row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.stack > * + * { margin-top: 16px; }
.split { display: grid; grid-template-columns: 45fr 55fr; gap: 60px; align-items: center; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ---------- Tipografia ---------- */
.display {
  font: 700 clamp(36px, 4.2vw, 56px)/1.06 var(--sans);
  color: var(--black);
  letter-spacing: -.035em;
}
.display em {
  font-style: normal;
  background: linear-gradient(transparent 58%, var(--yellow) 58%, var(--yellow) 92%, transparent 92%);
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
  padding: 0 .06em;
}
.cta .display em { background: linear-gradient(transparent 58%, var(--white) 58%, var(--white) 92%, transparent 92%); }
.heading { font: 700 clamp(28px, 3.4vw, 38px)/1.15 var(--sans); color: var(--black); letter-spacing: -.02em; }
.subheading { font: 700 20px/1.25 var(--sans); color: var(--black); }
.lead { font-size: 17px; line-height: 1.6; }
.kicker { display: block; font-size: 13px; color: var(--muted); margin-bottom: 10px; letter-spacing: .02em; }
.muted { color: var(--muted); font-weight: 400; }
.help { font-size: 13px; color: var(--muted); line-height: 1.5; }
.intro { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin-bottom: 40px; }
.intro .note { max-width: 560px; font-size: 15px; color: var(--muted); }
.intro--stack { display: block; }

/* ---------- Componentes ---------- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border: 1px dashed var(--border);
  border-radius: var(--r-pill);
  background: var(--white);
  font-size: 13px;
  line-height: 1.5;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 44px;
  padding: 10px 22px;
  border: 1px solid #353535;
  border-radius: var(--r-pill);
  background: var(--white);
  color: var(--black);
  font-size: 15px; font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--t) var(--ease), color var(--t) var(--ease), transform var(--t) var(--ease);
}
.btn:hover { background: var(--yellow-hover); }
.btn:active { transform: translateY(1px); }
.btn--solid { background: var(--black); color: var(--white); border-color: var(--black); border-radius: var(--r-img); }
.btn--solid:hover { background: #222; color: var(--yellow); }
.btn--sm { min-height: 36px; padding: 6px 16px; font-size: 14px; }
.btn--wa { width: 100%; background: var(--wa); border-color: var(--wa); color: var(--white); border-radius: var(--r-img); min-height: 52px; font-size: 16px; }
.btn--wa svg { width: 22px; height: 22px; fill: currentColor; }
.btn--wa:hover { background: var(--wa-hover); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn--wa.is-loading { opacity: 1; cursor: progress; background: var(--wa-hover); }
.btn--wa.is-loading svg { display: none; }
.btn--wa.is-loading::before {
  content: ""; width: 18px; height: 18px; flex: none;
  border: 2px solid rgba(255,255,255,.35); border-top-color: var(--white); border-radius: 50%;
  animation: spin .8s linear infinite;
}
.btn:disabled:hover { background: var(--wa); }

.link {
  background: none; border: 0; padding: 0;
  font-size: 13px; text-decoration: underline; text-underline-offset: 3px;
  color: var(--fg); cursor: pointer;
}
.link:hover { color: var(--black); }

.card {
  position: relative;
  background: var(--white);
  border: 1px dashed var(--border);
  border-radius: var(--r-card);
}
.card--panel { border-radius: var(--r-panel); }
.card--yellow { background: var(--yellow); }
.corner::before {
  content: "+";
  position: absolute; top: -12px; left: -8px;
  font: 400 22px/1 var(--sans);
  color: var(--border);
  pointer-events: none;
}

.chip {
  display: inline-flex; align-items: center;
  padding: 6px 12px;
  border: 1px solid rgba(0,0,0,.15);
  border-radius: var(--r-pill);
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(8px);
  font-size: 13px;
  cursor: pointer;
  transition: background var(--t) var(--ease);
}
.chip:hover { background: var(--yellow); }
.chip[aria-pressed="true"] { background: var(--black); color: var(--white); border-color: var(--black); }

/* ---------- Navegação ---------- */
.nav-wrap {
  position: fixed; top: 16px; left: 0; right: 0; z-index: 50;
  width: min(1083px, 100% - 32px); margin-inline: auto;
}
.nav {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 10px 12px 10px 20px;
  border: 1px dashed rgba(38,70,88,.5);
  border-radius: var(--r-nav);
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  transition: box-shadow 300ms var(--ease), background 300ms var(--ease);
}
.nav-wrap.is-scrolled .nav { background: rgba(255,255,255,.9); box-shadow: 0 8px 30px rgba(0,0,0,.06); }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--black); text-decoration: none; letter-spacing: -.01em; }
.brand svg { width: 30px; height: 30px; padding: 4px; border-radius: 8px; background: var(--yellow); fill: none; stroke: var(--black); stroke-width: 2.2; stroke-linejoin: round; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a:not(.btn) { padding: 8px 12px; border-radius: var(--r-pill); font-size: 14px; text-decoration: none; transition: background var(--t) var(--ease); }
.nav-links a:not(.btn):hover { background: var(--yellow); }
.nav-links .btn { margin-left: 8px; }
.nav-toggle { display: none; width: 40px; height: 40px; border: 0; background: transparent; cursor: pointer; position: relative; }
.nav-toggle span { position: absolute; left: 10px; right: 10px; height: 2px; background: var(--black); transition: transform var(--t) var(--ease); }
.nav-toggle span:first-child { top: 15px; }
.nav-toggle span:last-child { top: 23px; }
.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* ---------- Hero ---------- */
.hero { padding: 160px 0 80px; background: var(--white); }
.hero__grid { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: center; }
@media (min-width: 769px) { .hero .display em { white-space: nowrap; } }
.hero__text > * + * { margin-top: 24px; }
.hero__text .lead { max-width: 500px; }
.hero__art { position: relative; margin: 0; display: grid; place-items: center; }
.hero__art img {
  position: relative; z-index: 1;
  width: 100%; max-width: 560px; height: auto;
  filter: drop-shadow(0 18px 18px rgba(0,0,0,.08));
  animation: float 6s ease-in-out infinite;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }

/* ---------- Faixas animadas ---------- */
.tapes {
  position: relative;
  height: 150px;
  overflow: hidden;
  display: grid;
  place-items: center;
}
.tape {
  grid-area: 1 / 1;
  width: 110%;
  overflow: hidden;
  border-block: 1px dashed var(--border);
}
.tape--back { background: var(--yellow); transform: rotate(2deg); }
.tape--front { background: var(--black); transform: rotate(-2.2deg); box-shadow: 0 10px 30px rgba(0,0,0,.12); }
.tape__track { display: flex; width: max-content; animation: marquee var(--dur, 40s) linear infinite; will-change: transform; }
.tape--back .tape__track { animation-direction: reverse; }
.tapes:hover .tape__track { animation-play-state: paused; }
.tape__group { display: flex; align-items: center; flex: none; }
.tape__item { padding: 16px 22px; white-space: nowrap; font: 600 22px/1 var(--sans); letter-spacing: -.01em; color: var(--white); }
.tape--back .tape__item { padding: 11px 18px; font: 700 13px/1 var(--sans); letter-spacing: .14em; text-transform: uppercase; color: var(--black); }
.tape__sep { flex: none; width: 16px; height: 16px; fill: var(--yellow); }
.tape--back .tape__sep { width: 10px; height: 10px; fill: var(--black); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Calculadora ---------- */
.calc {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  grid-template-areas: "viewer result" "options result";
  gap: 24px;
  align-items: start;
}
.viewer { grid-area: viewer; overflow: hidden; }
.options { grid-area: options; }
.result { grid-area: result; position: sticky; top: 96px; }

.viewer__stage {
  position: relative;
  aspect-ratio: 4 / 3;
  background:
    radial-gradient(circle at 50% 40%, #fff 0%, #f2f2ee 70%),
    var(--surface);
  border-radius: var(--r-card) var(--r-card) 0 0;
}
.viewer__stage canvas { position: absolute; inset: 0; width: 100% !important; height: 100% !important; display: block; cursor: grab; touch-action: none; }
.viewer__stage canvas:active { cursor: grabbing; }
.viewer__stage.has-model .drop { opacity: 0; pointer-events: none; }
.viewer__stage.dragging .drop { opacity: 1; pointer-events: auto; background: rgba(255,229,142,.92); }

.drop {
  position: absolute; inset: 16px; z-index: 2;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
  padding: 24px;
  border: 2px dashed rgba(38,70,88,.45);
  border-radius: var(--r-card);
  text-align: center;
  cursor: pointer;
  transition: background var(--t) var(--ease), opacity var(--t) var(--ease), border-color var(--t) var(--ease);
}
.drop:hover { background: rgba(255,229,142,.35); border-color: var(--border); }
.drop svg { width: 52px; height: 52px; fill: none; stroke: var(--black); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; margin-bottom: 8px; }
.drop strong { font-size: 18px; color: var(--black); }
.drop > span { font-size: 13px; color: var(--muted); }
.drop .link { margin-top: 14px; }

.viewer__loading { position: absolute; inset: 0; z-index: 3; display: flex; align-items: center; justify-content: center; gap: 10px; background: rgba(249,249,249,.85); font-size: 14px; }
.spinner { width: 18px; height: 18px; border: 2px solid var(--input); border-top-color: var(--black); border-radius: 50%; animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

.viewer__tools { position: absolute; top: 12px; right: 12px; z-index: 2; display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.viewer__hint { position: absolute; bottom: 10px; left: 0; right: 0; z-index: 1; text-align: center; font-size: 12px; color: var(--muted); pointer-events: none; }

.viewer__info { display: grid; grid-template-columns: 1.1fr 1.6fr 1fr .9fr; border-top: 1px dashed var(--border); }
.viewer__info > div { padding: 14px 16px; min-width: 0; }
.viewer__info > div + div { border-left: 1px dashed rgba(38,70,88,.35); }
.viewer__info span { display: block; font-size: 12px; color: var(--muted); }
.viewer__info strong { display: block; font-size: 14px; color: var(--black); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#i-dims { white-space: normal; }

.alert { margin: 0 16px 16px; padding: 10px 14px; border-radius: var(--r-img); background: #fff4e5; border: 1px solid #f3c58a; font-size: 13px; }
.alert.is-error { background: #fdecec; border-color: #eba3a3; }

.options { display: grid; gap: 24px; padding: 8px 4px; }
.field-label { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 8px; font-size: 14px; font-weight: 600; color: var(--black); padding: 0; }
.field-label output { font-weight: 700; }
.field .help, fieldset .help { margin-top: 8px; }

.seg { display: flex; flex-wrap: wrap; gap: 8px; }
.seg button {
  flex: 1 1 0; min-width: 72px;
  padding: 10px 12px;
  border: 1px solid var(--input);
  border-radius: var(--r-img);
  background: var(--white);
  font-size: 14px; font-weight: 600;
  cursor: pointer;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}
.seg button small { display: block; font-weight: 400; font-size: 12px; color: var(--muted); }
.seg button:hover { border-color: var(--black); }
.seg button[aria-pressed="true"] { background: var(--yellow); border-color: var(--black); }

.swatches { display: flex; flex-wrap: wrap; gap: 10px; }
.swatches button {
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,.2);
  cursor: pointer;
  box-shadow: inset 0 -6px 10px rgba(0,0,0,.12);
  transition: transform var(--t) var(--ease);
}
.swatches button:hover { transform: scale(1.08); }
.swatches button[aria-pressed="true"] { outline: 2px solid var(--black); outline-offset: 3px; }

input[type="range"] { width: 100%; accent-color: var(--black); height: 24px; }

.input {
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border: 1px solid var(--input);
  border-radius: var(--r-img);
  background: var(--white);
  font-size: 15px;
  transition: border-color var(--t) var(--ease);
}
.input:focus { outline: none; border-color: var(--input-focus); box-shadow: 0 0 0 3px rgba(255,229,142,.8); }
textarea.input { resize: vertical; min-height: 64px; }
.select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%23333' stroke-width='1.6'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; background-size: 12px; padding-right: 36px; }

.stepper { display: flex; }
.stepper .input { border-radius: 0; text-align: center; border-inline: 0; -moz-appearance: textfield; }
.stepper .input::-webkit-inner-spin-button { -webkit-appearance: none; }
.stepper button { width: 44px; flex: none; border: 1px solid var(--input); background: var(--surface); font-size: 18px; cursor: pointer; }
.stepper button:first-child { border-radius: var(--r-img) 0 0 var(--r-img); }
.stepper button:last-child { border-radius: 0 var(--r-img) var(--r-img) 0; }
.stepper button:hover { background: var(--yellow); }

#painted-wrap { margin-top: 10px; }
#painted-wrap.is-disabled { opacity: .45; pointer-events: none; }
.switch { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; cursor: pointer; font-size: 14px; }
.switch input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.switch__ui { position: relative; width: 44px; height: 26px; border-radius: var(--r-pill); background: var(--input); transition: background var(--t) var(--ease); flex: none; }
.switch__ui::after { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: var(--white); box-shadow: 0 1px 3px rgba(0,0,0,.25); transition: transform var(--t) var(--ease); }
.switch input:checked + .switch__ui { background: var(--black); }
.switch input:checked + .switch__ui::after { transform: translateX(18px); }
.switch input:focus-visible + .switch__ui { outline: 2px solid var(--black); outline-offset: 3px; }

.result { padding: 28px; background: var(--surface); }
.price { font: 700 clamp(40px, 4.4vw, 54px)/1 var(--sans); letter-spacing: -.03em; color: var(--black); margin: 4px 0 6px; font-variant-numeric: tabular-nums; }
.breakdown { margin: 22px 0; border-top: 1px dashed var(--border); }
.breakdown div { display: flex; justify-content: space-between; gap: 12px; padding: 10px 0; border-bottom: 1px dashed rgba(38,70,88,.3); font-size: 14px; }
.breakdown dt { color: var(--muted); }
.breakdown dd { font-weight: 600; color: var(--black); text-align: right; font-variant-numeric: tabular-nums; }
.contact { display: grid; gap: 14px; margin-bottom: 20px; }
.fine { margin-top: 12px; font-size: 12px; color: var(--muted); line-height: 1.5; }

/* ---------- Como funciona ---------- */
.steps { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.steps li { padding: 32px; }
.steps li > * + * { margin-top: 10px; }
.step-n { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; background: var(--yellow); font-weight: 700; color: var(--black); margin-bottom: 10px; }

/* ---------- Materiais ---------- */
.materials { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.material { padding: 28px; display: flex; flex-direction: column; gap: 12px; transition: transform var(--t) var(--ease), background var(--t) var(--ease); }
.material:hover { transform: translateY(-3px); background: #fffbea; }
.material__name { font: 700 36px/1 var(--sans); letter-spacing: -.03em; color: var(--black); }
.material__dots { display: flex; gap: 6px; margin-top: auto; padding-top: 8px; }
.material__dots i { width: 16px; height: 16px; border-radius: 50%; border: 1px solid rgba(0,0,0,.2); }
.material__price { font-size: 13px; color: var(--muted); }

/* ---------- Sobre ---------- */
.about-art { aspect-ratio: 4 / 5; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 24px; }
.about-art { overflow: hidden; }
.about-photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 15% 30%; border-radius: inherit; z-index: 1; }
.about-photo ~ .about-mono { display: none; }
.about-photo ~ .about-tags { position: absolute; bottom: 20px; left: 0; right: 0; z-index: 2; }
.about-mono { font: 700 clamp(140px, 20vw, 220px)/.8 var(--sans); letter-spacing: -.05em; color: var(--black); }
.about-tags { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px dashed var(--border); }
.faq details { border-bottom: 1px dashed var(--border); }
.faq summary {
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 22px 0;
  font-size: 18px; font-weight: 600; color: var(--black);
  cursor: pointer; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; flex: none; display: grid; place-items: center; width: 32px; height: 32px; border-radius: 50%; border: 1px dashed var(--border); font-weight: 400; font-size: 20px; transition: transform var(--t) var(--ease), background var(--t) var(--ease); }
.faq details[open] summary::after { transform: rotate(45deg); background: var(--yellow); }
.faq details p { padding: 0 48px 24px 0; font-size: 16px; }
.faq summary { transition: color var(--t) var(--ease), padding var(--t) var(--ease); }
.faq summary:hover { color: var(--border); padding-left: 6px; }
.faq summary:hover::after { background: var(--yellow); }
.faq details[open]:not(.is-closing) p { animation: faq-in 420ms var(--ease) both; }
.faq details.is-closing p { opacity: 0; transform: translateY(-6px); transition: opacity 200ms var(--ease), transform 200ms var(--ease); }
.faq details.is-closing summary::after { transform: none; background: transparent; }
@keyframes faq-in { from { opacity: 0; transform: translateY(-8px); } to { opacity: 1; transform: none; } }
.reveal { opacity: 0; transform: translateY(28px); transition: opacity 800ms cubic-bezier(.16, 1, .3, 1), transform 800ms cubic-bezier(.16, 1, .3, 1); }
.reveal.is-in { opacity: 1; transform: none; }

/* ---------- CTA e rodapé ---------- */
.cta { padding: 0 0 80px; }
.cta__inner { padding: 64px 48px; display: flex; flex-direction: column; align-items: center; text-align: center; gap: 32px; border-radius: var(--r-panel); }
.cta__inner .row { justify-content: center; }
.footer { background: var(--black); color: #bdbdbd; padding: 64px 0 28px; font-size: 14px; position: relative; }
.footer a { text-decoration: none; transition: color var(--t) var(--ease); }
.footer a:hover { color: var(--yellow); }
.footer__top { display: grid; grid-template-columns: 1.6fr 1fr 1.2fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px dashed rgba(255,255,255,.2); }
.footer__brand > * + * { margin-top: 14px; }
.footer__brand p { max-width: 320px; line-height: 1.6; }
.footer__brand .btn { margin-top: 22px; }
.brand--light { color: var(--white); }
.footer__place { display: flex; align-items: center; gap: 8px; }
.footer__place::before {
  content: ""; width: 16px; height: 16px; flex: none; background: var(--yellow);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2a7 7 0 00-7 7c0 5.2 7 13 7 13s7-7.8 7-13a7 7 0 00-7-7zm0 9.5A2.5 2.5 0 1112 6.5a2.5 2.5 0 010 5z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M12 2a7 7 0 00-7 7c0 5.2 7 13 7 13s7-7.8 7-13a7 7 0 00-7-7zm0 9.5A2.5 2.5 0 1112 6.5a2.5 2.5 0 010 5z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.footer__col { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; }
.footer__col h3 { margin: 0 0 6px; font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--yellow); }
.footer__col a { display: inline-flex; align-items: center; gap: 10px; color: #e6e6e6; }
.footer__col svg { width: 18px; height: 18px; fill: currentColor; flex: none; }
.footer__note { margin-top: 6px; font-size: 13px; color: #8a8a8a; max-width: 260px; }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; padding-top: 24px; font-size: 13px; color: #8a8a8a; }
.btn--yellow { background: var(--yellow); border-color: var(--yellow); color: var(--black); border-radius: var(--r-img); }
.btn--yellow:hover { background: var(--yellow-hover); }
.footer .btn--yellow:hover { color: var(--black); }
.credit { display: inline-flex; align-items: center; gap: 10px; font-size: 13px; color: #aaa; }
.credit img { width: auto; height: 34px; opacity: .85; transition: opacity var(--t) var(--ease), transform var(--t) var(--ease); }
.credit:hover img { opacity: 1; transform: scale(1.06); }

/* ---------- Responsivo ---------- */
@media (max-width: 1024px) {
  .calc { grid-template-columns: 1fr; grid-template-areas: "viewer" "options" "result"; }
  .result { position: static; }
  .materials { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 60px 0; }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: calc(100% + 8px); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    padding: 10px;
    border: 1px dashed rgba(38,70,88,.5);
    border-radius: var(--r-nav);
    background: rgba(255,255,255,.97);
    box-shadow: 0 12px 30px rgba(0,0,0,.08);
    display: none;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a:not(.btn) { padding: 12px 14px; font-size: 16px; }
  .nav-links .btn { margin: 6px 0 0; }

  .hero { padding: 130px 0 56px; }
  .hero__grid, .split { grid-template-columns: 1fr; gap: 40px; }
  .hero__art { max-width: 420px; width: 100%; margin-inline: auto; }
  .hero__text { text-align: center; }
  .hero__text .lead { margin-inline: auto; }
  .hero__text .row { justify-content: center; }
  .intro { margin-bottom: 28px; }
  .steps { grid-template-columns: 1fr; }
  .viewer__stage { aspect-ratio: 1; }
  .tapes { height: 120px; }
  .tape__item { font-size: 18px; padding: 13px 16px; }
  .viewer__info { grid-template-columns: 1fr 1fr; }
  .viewer__info > div:nth-child(3) { border-left: 0; }
  .viewer__info > div:nth-child(n+3) { border-top: 1px dashed rgba(38,70,88,.35); }
  .about-art { aspect-ratio: 4 / 5; max-width: 420px; width: 100%; margin-inline: auto; }
  .cta__inner { padding: 48px 24px; }
  .faq details p { padding-right: 0; }
  .footer { padding: 48px 0 24px; text-align: center; }
  .footer__top { display: flex; flex-direction: column; gap: 36px; padding-bottom: 36px; }
  .footer__brand { display: flex; flex-direction: column; align-items: center; }
  .footer__brand p { margin-inline: auto; }
  .footer__brand .btn { width: 100%; max-width: 320px; min-height: 48px; }
  .footer__col { align-items: center; gap: 12px; }
  .footer__col[aria-label] { order: 2; flex-direction: row; flex-wrap: wrap; justify-content: center; gap: 8px; }
  .footer__col[aria-label] h3 { width: 100%; }
  .footer__col[aria-label] a { padding: 8px 14px; border: 1px dashed rgba(255,255,255,.25); border-radius: var(--r-pill); font-size: 14px; }
  .footer__col a { font-size: 15px; }
  .footer__note { text-align: center; margin-inline: auto; }
  .footer__bottom { flex-direction: column; justify-content: center; gap: 16px; }
  .footer__bottom > span { order: 3; }
  .credit { padding: 10px 16px; border-radius: var(--r-img); background: rgba(255,255,255,.06); }
}

@media (max-width: 520px) {
  .materials { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .result { padding: 22px; }
  .row .btn { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}