/* ============================================================
   Atelier Stairs — Premium CSS (polish/premium-stairs)
   ============================================================ */

/* ── Tokens ──────────────────────────────────────────────── */
:root {
  /* Palette */
  --c-bg:        #0e0d0b;
  --c-surface:   #141210;
  --c-surface2:  #1a1814;
  --c-border:    rgba(180,150,100,.14);
  --c-border2:   rgba(180,150,100,.22);

  --c-gold:      #c8a96e;
  --c-gold-lt:   #dfc08a;
  --c-gold-dk:   #a0824a;
  --c-gold-bg:   rgba(200,169,110,.08);

  --c-text:      #e8e2d9;
  --c-muted:     #8a8278;
  --c-faint:     #3d3a34;

  /* Typography */
  --ff-display:  'Cormorant Garamond', Georgia, serif;
  --ff-body:     'Manrope', system-ui, sans-serif;

  --fs-xs:       .75rem;
  --fs-sm:       .875rem;
  --fs-base:     1rem;
  --fs-md:       1.125rem;
  --fs-lg:       1.375rem;
  --fs-xl:       1.75rem;
  --fs-2xl:      2.25rem;
  --fs-3xl:      2.875rem;
  --fs-4xl:      3.75rem;

  /* Spacing */
  --sp-1:  .25rem;
  --sp-2:  .5rem;
  --sp-3:  .75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* Radius */
  --r-sm:  .375rem;
  --r-md:  .75rem;
  --r-lg:  1.25rem;

  /* Transitions */
  --ease-out: cubic-bezier(.22,.68,0,1.2);
  --ease-in:  cubic-bezier(.55,.055,.675,.19);
  --ease-std: cubic-bezier(.4,0,.2,1);
  --dur-fast: 180ms;
  --dur-mid:  320ms;
  --dur-slow: 520ms;

  /* Shadows */
  --shadow-sm:  0 2px 12px rgba(0,0,0,.4);
  --shadow-md:  0 8px 32px rgba(0,0,0,.55);
  --shadow-lg:  0 20px 60px rgba(0,0,0,.6);
  --shadow-glow: 0 0 40px rgba(200,169,110,.12);
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--ff-body);
  background: var(--c-bg);
  color: var(--c-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

/* ── Utility ─────────────────────────────────────────────── */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-body);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-gold);
  margin-bottom: var(--sp-4);
}
.eyebrow::before {
  content: '';
  display: block;
  width: 24px; height: 1px;
  background: var(--c-gold);
  opacity: .7;
}

/* ── Reveal animations ───────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition:
    opacity var(--dur-slow) var(--ease-std),
    transform var(--dur-slow) var(--ease-std);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* Stagger child reveals */
.reveal-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--dur-slow) var(--ease-std),
    transform var(--dur-slow) var(--ease-std);
}
.reveal-children.is-visible > *:nth-child(1) { opacity:1; transform:none; transition-delay:.05s; }
.reveal-children.is-visible > *:nth-child(2) { opacity:1; transform:none; transition-delay:.13s; }
.reveal-children.is-visible > *:nth-child(3) { opacity:1; transform:none; transition-delay:.21s; }
.reveal-children.is-visible > *:nth-child(4) { opacity:1; transform:none; transition-delay:.29s; }
.reveal-children.is-visible > *:nth-child(5) { opacity:1; transform:none; transition-delay:.37s; }

/* ── Buttons ─────────────────────────────────────────────── */
.button {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: .06em;
  border-radius: var(--r-sm);
  padding: .75rem 1.75rem;
  transition:
    background var(--dur-mid) var(--ease-std),
    color var(--dur-mid) var(--ease-std),
    border-color var(--dur-mid) var(--ease-std),
    box-shadow var(--dur-mid) var(--ease-std),
    transform var(--dur-fast) var(--ease-std);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}
.button::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.05);
  opacity: 0;
  transition: opacity var(--dur-fast);
}
.button:hover::after { opacity: 1; }
.button:active { transform: scale(.97); }

.button-primary {
  background: var(--c-gold);
  color: #0e0d0b;
}
.button-primary:hover {
  background: var(--c-gold-lt);
  box-shadow: 0 4px 24px rgba(200,169,110,.35);
}

.button-outline {
  background: transparent;
  color: var(--c-gold);
  border: 1px solid var(--c-gold-dk);
}
.button-outline:hover {
  border-color: var(--c-gold);
  color: var(--c-gold-lt);
  box-shadow: 0 4px 20px rgba(200,169,110,.15);
}

.button-header {
  background: transparent;
  color: var(--c-gold);
  border: 1px solid var(--c-border2);
  font-size: var(--fs-xs);
  padding: .55rem 1.25rem;
  letter-spacing: .08em;
}
.button-header:hover {
  border-color: var(--c-gold);
  color: var(--c-gold-lt);
}

/* ── Page shell ──────────────────────────────────────────── */
.page-shell {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

/* ── Topbar / Header ─────────────────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
  padding: 1.1rem 3rem;
  background: rgba(14,13,11,.8);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--c-border);
  transition: padding var(--dur-mid) var(--ease-std), background var(--dur-mid);
}
.topbar.scrolled {
  padding-top: .75rem;
  padding-bottom: .75rem;
  background: rgba(14,13,11,.95);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--ff-display);
  font-size: 1.3rem;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--c-text);
  transition: color var(--dur-fast);
}
.brand:hover { color: var(--c-gold); }
.brand-mark {
  width: 28px; height: 28px;
  border: 1.5px solid var(--c-gold);
  border-radius: 50%;
  position: relative;
  flex-shrink: 0;
}
.brand-mark::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  width: 8px; height: 8px;
  background: var(--c-gold);
  border-radius: 50%;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--sp-8);
}
.nav a {
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-muted);
  transition: color var(--dur-fast);
  position: relative;
}
.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transition: transform var(--dur-mid) var(--ease-std);
  transform-origin: left;
}
.nav a:hover,
.nav a.is-active { color: var(--c-text); }
.nav a:hover::after,
.nav a.is-active::after { transform: scaleX(1); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 5px;
  width: 32px; height: 32px;
  padding: 4px;
  z-index: 110;
}
.nav-toggle span {
  display: block;
  height: 1.5px;
  background: var(--c-text);
  border-radius: 2px;
  transition: transform var(--dur-mid) var(--ease-std), opacity var(--dur-fast), width var(--dur-mid) var(--ease-std);
}
.nav-toggle span:nth-child(1) { width: 22px; }
.nav-toggle span:nth-child(2) { width: 14px; }
.nav-toggle.is-active span:nth-child(1) { width: 22px; transform: translateY(6.5px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2) { width: 22px; transform: translateY(-6.5px) rotate(-45deg); }

/* ── Hero ────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: 1fr;
  overflow: hidden;
  padding-top: 80px;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(.45) saturate(.7);
  transition: filter 2s ease;
}
.hero-video.is-finished { filter: brightness(.35) saturate(.5); }

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      rgba(14,13,11,.6) 0%,
      rgba(14,13,11,.15) 40%,
      rgba(14,13,11,.55) 75%,
      rgba(14,13,11,.92) 100%);
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  bottom: 20%; width: 320px; height: 320px;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  opacity: .18;
}
.hero-glow-left  { left: -60px; background: var(--c-gold); }
.hero-glow-right { right: -60px; background: #6e4fc8; }

.hero-copy {
  position: relative;
  z-index: 2;
  align-self: center;
  max-width: 720px;
  padding: var(--sp-20) var(--sp-12) var(--sp-16);
  margin-top: auto;
  margin-bottom: auto;
}

.hero-title {
  font-family: var(--ff-display);
  font-size: clamp(2.6rem, 6vw, 5rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -.01em;
  color: #fff;
  margin-bottom: var(--sp-6);
}
.hero-title span { display: block; }
.hero-title span:nth-child(2) {
  color: var(--c-gold);
  font-style: italic;
}

.lead {
  font-size: var(--fs-md);
  color: rgba(232,226,217,.72);
  line-height: 1.7;
  max-width: 560px;
  margin-bottom: var(--sp-8);
}

.hero-actions { margin-bottom: var(--sp-10); }

.hero-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-6) var(--sp-10);
  border-top: 1px solid var(--c-border);
  padding-top: var(--sp-6);
}
.hero-metrics div { min-width: 140px; }
.hero-metrics dt {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 500;
  color: var(--c-gold);
  line-height: 1.1;
  margin-bottom: var(--sp-1);
}
.hero-metrics dd {
  font-size: var(--fs-xs);
  color: var(--c-muted);
  line-height: 1.5;
}

.hero-notes {
  position: absolute;
  right: var(--sp-12);
  bottom: var(--sp-12);
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  max-width: 280px;
}
.media-card {
  background: rgba(20,18,16,.75);
  backdrop-filter: blur(16px);
  border: 1px solid var(--c-border2);
  border-radius: var(--r-md);
  padding: var(--sp-5) var(--sp-6);
}
.media-card span {
  display: block;
  font-size: var(--fs-xs);
  color: var(--c-gold);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}
.media-card strong {
  font-size: var(--fs-sm);
  font-weight: 400;
  color: var(--c-text);
  line-height: 1.5;
}

/* ── Section common ──────────────────────────────────────── */
section { padding: var(--sp-24) var(--sp-12); }
.section-head {
  max-width: 720px;
  margin-bottom: var(--sp-16);
}
.section-head h2 {
  font-family: var(--ff-display);
  font-size: clamp(var(--fs-2xl), 3.5vw, var(--fs-3xl));
  font-weight: 400;
  line-height: 1.2;
  color: var(--c-text);
  margin-bottom: var(--sp-4);
}
.section-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--c-gold);
  border-bottom: 1px solid var(--c-gold-dk);
  padding-bottom: 2px;
  transition: border-color var(--dur-fast), color var(--dur-fast), gap var(--dur-fast);
}
.section-link::after { content: '→'; }
.section-link:hover { color: var(--c-gold-lt); border-color: var(--c-gold); gap: var(--sp-3); }

/* ── Offers section ──────────────────────────────────────── */
.offers { background: var(--c-surface); }
.offers-intro {
  max-width: 680px;
  margin-bottom: var(--sp-12);
}
.offers-intro h2 {
  font-family: var(--ff-display);
  font-size: clamp(var(--fs-xl), 3vw, var(--fs-2xl));
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: var(--sp-4);
}
.offers-intro p { color: var(--c-muted); line-height: 1.7; }

.offer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
  margin-bottom: var(--sp-10);
}

.offer-card {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition:
    border-color var(--dur-mid) var(--ease-std),
    box-shadow var(--dur-mid) var(--ease-std),
    transform var(--dur-mid) var(--ease-std);
}
.offer-card:hover {
  border-color: var(--c-border2);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  transform: translateY(-4px);
}

.offer-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: var(--sp-5) var(--sp-5) 0;
}
.offer-card-top > div { display: flex; flex-direction: column; gap: 3px; }
.offer-card-top span { font-size: var(--fs-xs); color: var(--c-muted); }
.offer-card-top strong { font-size: var(--fs-sm); font-weight: 600; color: var(--c-text); }
.offer-badge {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--c-gold);
  background: var(--c-gold-bg);
  border: 1px solid rgba(200,169,110,.2);
  border-radius: 20px;
  padding: 3px 10px;
  white-space: nowrap;
  flex-shrink: 0;
}

.offer-preview {
  position: relative;
  height: 220px;
  overflow: hidden;
  margin: var(--sp-4) var(--sp-5);
  border-radius: var(--r-md);
}
.offer-preview img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center top;
  transition: transform var(--dur-slow) var(--ease-std), filter var(--dur-slow);
  filter: brightness(.85) contrast(1.05) saturate(.9);
}
.offer-card:hover .offer-preview img {
  transform: scale(1.05);
  filter: brightness(.95) contrast(1.08) saturate(1);
}
.offer-preview::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(14,13,11,.7) 100%);
  pointer-events: none;
}

.offer-copy {
  padding: 0 var(--sp-5) var(--sp-4);
  flex: 1;
}
.offer-copy h3 {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  line-height: 1.25;
  margin-bottom: var(--sp-2);
}
.offer-copy p { font-size: var(--fs-sm); color: var(--c-muted); line-height: 1.6; }

.offer-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  border-top: 1px solid var(--c-border);
  margin-top: auto;
}
.offer-price {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.offer-price strong {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--c-gold);
}
.offer-price s {
  font-size: var(--fs-xs);
  color: var(--c-muted);
  text-decoration: line-through;
  opacity: .7;
}

.offers-cta { text-align: center; margin-top: var(--sp-6); }

/* ── Products section ────────────────────────────────────── */
.products { background: var(--c-bg); }
.products-header {
  max-width: 680px;
  margin-bottom: var(--sp-12);
}
.products-header h2 {
  font-family: var(--ff-display);
  font-size: clamp(var(--fs-xl), 3vw, var(--fs-2xl));
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: var(--sp-4);
}
.products-lead { font-size: var(--fs-sm); color: var(--c-muted); line-height: 1.7; }

.product-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-6);
}
.product-viewers { gap: var(--sp-6); }

.product-viewer {
  display: grid;
  grid-template-columns: 420px 1fr auto;
  gap: 0;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  transition:
    border-color var(--dur-mid),
    box-shadow var(--dur-mid);
}
.product-viewer:hover {
  border-color: var(--c-border2);
  box-shadow: var(--shadow-md);
}

.product-visual-frame {
  position: relative;
  height: 300px;
  overflow: hidden;
  background: var(--c-faint);
}
.product-visual {
  width: 100%; height: 100%;
  overflow: hidden;
}
.product-visual img,
.product-visual-frame img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(.82) contrast(1.06) saturate(.88);
  transition: transform var(--dur-slow) var(--ease-std), filter var(--dur-slow);
}
.product-viewer:hover .product-visual img {
  transform: scale(1.04);
  filter: brightness(.92) contrast(1.08) saturate(.95);
}

/* Premium slider arrows */
.product-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(14,13,11,.7);
  border: 1px solid var(--c-border2);
  border-radius: 50%;
  color: var(--c-gold);
  font-size: 1.1rem;
  line-height: 1;
  opacity: 0;
  transition:
    opacity var(--dur-mid) var(--ease-std),
    background var(--dur-fast),
    border-color var(--dur-fast),
    transform var(--dur-fast);
  backdrop-filter: blur(8px);
}
.product-arrow:disabled {
  opacity: 0 !important;
  pointer-events: none;
}
.product-viewer:hover .product-arrow:not(:disabled) { opacity: 1; }
.product-arrow:hover {
  background: rgba(200,169,110,.2);
  border-color: var(--c-gold);
}
.product-arrow:active { transform: translateY(-50%) scale(.92); }
.product-arrow-prev { left: 10px; }
.product-arrow-next { right: 10px; }

/* SVG icons for arrows */
.product-arrow svg { width: 14px; height: 14px; }

.product-copy {
  padding: var(--sp-6) var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  justify-content: center;
  border-left: 1px solid var(--c-border);
}
.product-meta {
  font-size: var(--fs-xs);
  color: var(--c-gold);
  letter-spacing: .1em;
  text-transform: uppercase;
  font-weight: 600;
}
.product-copy h3 {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 500;
  line-height: 1.2;
}
.product-description {
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.65;
}
.product-copy ul {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-top: var(--sp-1);
}
.product-copy li {
  font-size: var(--fs-sm);
  color: rgba(232,226,217,.75);
  padding-left: var(--sp-4);
  position: relative;
}
.product-copy li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 5px; height: 1px;
  background: var(--c-gold);
}

.product-side {
  padding: var(--sp-6) var(--sp-6);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: var(--sp-4);
  border-left: 1px solid var(--c-border);
  min-width: 160px;
}
.product-side strong {
  font-family: var(--ff-display);
  font-size: var(--fs-2xl);
  font-weight: 500;
  color: var(--c-gold);
  line-height: 1;
}

/* Product pagination dots (inline in visual frame) */
.product-dots {
  position: absolute;
  bottom: 10px; left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  gap: 6px;
}
.product-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,.35);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: background var(--dur-fast), transform var(--dur-fast);
}
.product-dot.is-active {
  background: var(--c-gold);
  transform: scale(1.3);
}

/* ── Materials section ───────────────────────────────────── */
.materials { background: var(--c-surface); }
.material-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-5);
  margin-top: var(--sp-12);
}

.material-card {
  position: relative;
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--c-surface2);
  transition:
    border-color var(--dur-mid),
    box-shadow var(--dur-mid),
    transform var(--dur-mid);
}
.material-card:hover {
  border-color: var(--c-border2);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  transform: translateY(-3px);
}

.material-visual {
  height: 200px;
  overflow: hidden;
}
.material-visual img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(.75) contrast(1.1) saturate(.8);
  transition: transform var(--dur-slow) var(--ease-std), filter var(--dur-slow);
}
.material-card:hover .material-visual img {
  transform: scale(1.06);
  filter: brightness(.88) contrast(1.12) saturate(.9);
}

.material-index {
  display: block;
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--c-gold);
  letter-spacing: .12em;
  padding: var(--sp-4) var(--sp-5) 0;
}
.material-card h3 {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  line-height: 1.2;
  padding: var(--sp-2) var(--sp-5) 0;
}
.material-card p {
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.6;
  padding: var(--sp-3) var(--sp-5) var(--sp-6);
}

/* ── Pricing section ─────────────────────────────────────── */
.pricing { background: var(--c-bg); }
.pricing .section-head { margin-bottom: var(--sp-10); }

.pricing-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--sp-10);
  align-items: start;
}

.pricing-board {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  counter-reset: none;
}
.pricing-board article {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: var(--sp-4) var(--sp-6);
  align-items: start;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: var(--sp-6);
  transition: border-color var(--dur-mid), background var(--dur-mid);
}
.pricing-board article:hover {
  border-color: var(--c-border2);
  background: var(--c-surface2);
}
.pricing-board article > span:first-child {
  width: 56px; height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-display);
  font-size: var(--fs-2xl);
  font-weight: 400;
  color: var(--c-gold);
  border: 1px solid var(--c-border2);
  border-radius: var(--r-md);
  flex-shrink: 0;
}
.pricing-board h3 {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  margin-bottom: var(--sp-2);
}
.pricing-board p { font-size: var(--fs-sm); color: var(--c-muted); line-height: 1.65; }

.pricing-note {
  background: var(--c-surface);
  border: 1px solid var(--c-border2);
  border-radius: var(--r-lg);
  padding: var(--sp-8);
  position: sticky;
  top: 100px;
}
.price-from {
  font-family: var(--ff-display);
  font-size: var(--fs-4xl);
  font-weight: 400;
  color: var(--c-gold);
  line-height: 1;
  margin-bottom: var(--sp-4);
}
.pricing-note > p:last-of-type {
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.65;
  margin-bottom: var(--sp-5);
}
.pricing-note ul { display: flex; flex-direction: column; gap: var(--sp-3); }
.pricing-note li {
  font-size: var(--fs-sm);
  color: var(--c-text);
  padding-left: var(--sp-5);
  position: relative;
}
.pricing-note li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--c-gold);
  opacity: .7;
}

/* ── Journey section ─────────────────────────────────────── */
.journey { background: var(--c-surface); padding-bottom: var(--sp-16); }
.journey-stage { margin-bottom: var(--sp-20); }
.journey-head { max-width: 640px; margin-bottom: var(--sp-12); }
.journey-head h2 {
  font-family: var(--ff-display);
  font-size: clamp(var(--fs-2xl), 3.5vw, var(--fs-3xl));
  font-weight: 400;
  line-height: 1.18;
  margin-bottom: var(--sp-3);
}
.journey-head h2 span { color: var(--c-gold); font-style: italic; }
.journey-head p { font-size: var(--fs-sm); color: var(--c-muted); line-height: 1.7; }

.stage-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-4);
}

.stage-card {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: var(--sp-6);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  transition:
    border-color var(--dur-mid),
    background var(--dur-mid),
    transform var(--dur-mid);
}
.stage-card:hover {
  border-color: var(--c-border2);
  background: rgba(200,169,110,.04);
  transform: translateY(-3px);
}

.stage-index {
  font-family: var(--ff-display);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--c-gold);
  letter-spacing: .12em;
}
.stage-icon {
  font-size: 1.5rem;
  color: var(--c-gold);
  opacity: .7;
  margin-bottom: var(--sp-1);
}
.stage-card h3 {
  font-family: var(--ff-display);
  font-size: var(--fs-md);
  font-weight: 500;
  line-height: 1.2;
}
.stage-card p {
  font-size: var(--fs-xs);
  color: var(--c-muted);
  line-height: 1.65;
  flex: 1;
}
.stage-link {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--c-gold);
  margin-top: var(--sp-2);
  transition: gap var(--dur-fast), color var(--dur-fast);
}
.stage-link::after { content: '→'; }
.stage-link:hover { gap: var(--sp-3); color: var(--c-gold-lt); }

/* ── FAQ ─────────────────────────────────────────────────── */
.faq-block { margin-bottom: var(--sp-20); }
.faq-head { margin-bottom: var(--sp-10); }
.faq-grid {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  max-width: 800px;
}

.faq-item {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color var(--dur-mid);
}
.faq-item[open] { border-color: var(--c-border2); }
.faq-item[open] summary { color: var(--c-text); }

.faq-item summary {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding: var(--sp-5) var(--sp-6);
  cursor: pointer;
  font-weight: 500;
  font-size: var(--fs-sm);
  color: rgba(232,226,217,.8);
  list-style: none;
  transition: color var(--dur-fast), background var(--dur-fast);
  user-select: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary:hover { color: var(--c-text); background: rgba(200,169,110,.03); }

.faq-icon {
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border2);
  border-radius: 50%;
  font-size: .8rem;
  color: var(--c-gold);
  flex-shrink: 0;
  transition: background var(--dur-fast), border-color var(--dur-fast);
}
.faq-item[open] .faq-icon {
  background: var(--c-gold-bg);
  border-color: var(--c-gold-dk);
}

/* FAQ expand indicator */
.faq-item summary::after {
  content: '+';
  margin-left: auto;
  font-size: 1.1rem;
  color: var(--c-gold);
  font-weight: 300;
  transition: transform var(--dur-mid) var(--ease-std);
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }

.faq-item > p {
  padding: 0 var(--sp-6) var(--sp-5) calc(var(--sp-6) + 28px + var(--sp-4));
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.7;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity 250ms ease, transform 250ms ease;
  margin: 0;
}
.faq-item[open] > p {
  opacity: 1;
  transform: translateY(0);
}

/* ── Reviews carousel ────────────────────────────────────── */
.reviews-showcase { }
.reviews-head { margin-bottom: var(--sp-8); }

.reviews-carousel {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

/* Premium carousel arrows */
.carousel-arrow {
  flex-shrink: 0;
  width: 48px; height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-surface2);
  border: 1px solid var(--c-border2);
  border-radius: 50%;
  color: var(--c-gold);
  font-size: 1.2rem;
  transition:
    background var(--dur-fast),
    border-color var(--dur-fast),
    color var(--dur-fast),
    transform var(--dur-fast),
    opacity var(--dur-fast);
  backdrop-filter: blur(8px);
}
.carousel-arrow:hover {
  background: rgba(200,169,110,.15);
  border-color: var(--c-gold);
  color: var(--c-gold-lt);
}
.carousel-arrow:active { transform: scale(.92); }
.carousel-arrow:disabled {
  opacity: .3;
  pointer-events: none;
}

.carousel-track-wrap {
  overflow: hidden;
  flex: 1;
}
.carousel-track {
  display: flex;
  gap: var(--sp-5);
  transition: transform var(--dur-slow) var(--ease-std);
}

.showcase-card {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  padding: var(--sp-6) var(--sp-7);
  flex: 0 0 calc((100% - 2 * var(--sp-5)) / 3);
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
  transition:
    border-color var(--dur-mid),
    box-shadow var(--dur-mid),
    transform var(--dur-mid);
}
.showcase-card:hover {
  border-color: var(--c-border2);
  box-shadow: var(--shadow-sm), var(--shadow-glow);
  transform: translateY(-3px);
}

.showcase-top {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}
.showcase-avatar {
  width: 44px; height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 600;
  color: var(--c-bg);
  flex-shrink: 0;
}
.avatar-1 { background: linear-gradient(135deg, var(--c-gold), var(--c-gold-dk)); }
.avatar-2 { background: linear-gradient(135deg, #8c7a5a, #b89c6a); }
.avatar-3 { background: linear-gradient(135deg, #5c7a8c, #6a9cb8); }
.showcase-top > div { display: flex; flex-direction: column; gap: 3px; }
.showcase-top strong { font-size: var(--fs-sm); font-weight: 600; }
.showcase-role { font-size: var(--fs-xs); color: var(--c-muted); }
.showcase-stars {
  font-size: .8rem;
  color: var(--c-gold);
  letter-spacing: 2px;
}
.showcase-card > p {
  font-size: var(--fs-sm);
  color: rgba(232,226,217,.8);
  line-height: 1.7;
  flex: 1;
}

.carousel-dots {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  margin-top: var(--sp-8);
}
.carousel-dots button {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-faint);
  border: 1px solid var(--c-border2);
  padding: 0;
  cursor: pointer;
  transition: background var(--dur-fast), transform var(--dur-fast), width var(--dur-mid);
}
.carousel-dots button.is-active {
  background: var(--c-gold);
  transform: scale(1.25);
  width: 20px;
  border-radius: 4px;
}

/* ── Contact / Calculator section ────────────────────────── */
.contact { background: var(--c-bg); }
.calculator-layout {
  display: grid;
  grid-template-columns: 1fr 520px;
  gap: var(--sp-16);
  align-items: start;
}

.calculator-intro { }
.calculator-intro h2 {
  font-family: var(--ff-display);
  font-size: clamp(var(--fs-xl), 3vw, var(--fs-2xl));
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: var(--sp-4);
}
.calculator-copy {
  font-size: var(--fs-sm);
  color: var(--c-muted);
  line-height: 1.7;
  margin-bottom: var(--sp-5);
}
.calculator-note {
  font-size: var(--fs-xs);
  color: var(--c-gold);
  background: var(--c-gold-bg);
  border: 1px solid rgba(200,169,110,.2);
  border-radius: var(--r-sm);
  padding: var(--sp-3) var(--sp-4);
  margin-bottom: var(--sp-6);
  line-height: 1.5;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  margin-bottom: var(--sp-6);
}
.contact-channel {
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-md);
  padding: var(--sp-4) var(--sp-5);
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.contact-channel:hover {
  border-color: var(--c-border2);
  background: var(--c-surface2);
}
.contact-channel strong { font-size: var(--fs-sm); font-weight: 600; color: var(--c-text); }
.contact-channel span { font-size: var(--fs-xs); color: var(--c-muted); line-height: 1.5; }

.contact-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}
.contact-tags span {
  font-size: var(--fs-xs);
  color: var(--c-muted);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 20px;
  padding: 4px 12px;
}

/* Calculator form */
.calculator-form {
  background: var(--c-surface);
  border: 1px solid var(--c-border2);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.calculator-stage {
  display: none;
  padding: var(--sp-8);
  animation: stageIn .25s var(--ease-std);
}
.calculator-stage.is-active { display: block; }
@keyframes stageIn {
  from { opacity: 0; transform: translateX(12px); }
  to   { opacity: 1; transform: none; }
}

.calculator-stage-head { margin-bottom: var(--sp-6); }
.calculator-step-count {
  display: block;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--c-gold);
  letter-spacing: .1em;
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}
.calculator-stage-head h3 {
  font-family: var(--ff-display);
  font-size: var(--fs-xl);
  font-weight: 500;
  margin-bottom: var(--sp-2);
}
.calculator-stage-head p { font-size: var(--fs-sm); color: var(--c-muted); line-height: 1.6; }

.calculator-grid {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.calculator-grid.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

.calculator-field {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}
.calculator-field span {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--c-muted);
  letter-spacing: .06em;
  text-transform: uppercase;
}
.calculator-field input,
.calculator-field select,
.calculator-field textarea {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  padding: .65rem .9rem;
  font-size: var(--fs-sm);
  color: var(--c-text);
  transition: border-color var(--dur-fast), box-shadow var(--dur-fast);
  outline: none;
  width: 100%;
  resize: vertical;
}
.calculator-field input:focus,
.calculator-field select:focus,
.calculator-field textarea:focus {
  border-color: var(--c-gold-dk);
  box-shadow: 0 0 0 3px rgba(200,169,110,.12);
}
.calculator-field input::placeholder,
.calculator-field textarea::placeholder { color: var(--c-faint); }
.calculator-field select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238a8278' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; padding-right: 36px; }
.calculator-field select option { background: var(--c-surface2); color: var(--c-text); }

/* Choice cards (radio) */
.choice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-3);
}
.choice-grid.two-columns { grid-template-columns: repeat(2, 1fr); }
.choice-grid.compact-choice-grid { grid-template-columns: repeat(2, 1fr); }

.choice-card {
  position: relative;
  cursor: pointer;
}
.choice-card input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0; height: 0;
}
.choice-card span {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 52px;
  padding: var(--sp-3) var(--sp-4);
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--c-muted);
  transition: all var(--dur-fast);
  line-height: 1.3;
}
.choice-card:hover span {
  border-color: var(--c-border2);
  color: var(--c-text);
}
.choice-card input:checked + span {
  border-color: var(--c-gold-dk);
  background: var(--c-gold-bg);
  color: var(--c-gold);
}

/* Upload dropzone */
.upload-dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  background: var(--c-surface2);
  border: 2px dashed var(--c-border);
  border-radius: var(--r-md);
  padding: var(--sp-10);
  cursor: pointer;
  text-align: center;
  transition: border-color var(--dur-fast), background var(--dur-fast);
}
.upload-dropzone:hover {
  border-color: var(--c-gold-dk);
  background: var(--c-gold-bg);
}
.upload-dropzone input[type="file"] { display: none; }
.upload-icon {
  font-size: 1.5rem;
  color: var(--c-gold);
  opacity: .7;
}
.upload-dropzone strong { font-size: var(--fs-sm); }
.upload-dropzone span { font-size: var(--fs-xs); color: var(--c-muted); }

.upload-preview {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-4);
}
.upload-preview-item {
  display: flex;
  flex-direction: column;
  gap: var(--sp-1);
  width: 80px;
}
.upload-preview-item img {
  width: 80px; height: 60px;
  object-fit: cover;
  border-radius: var(--r-sm);
  border: 1px solid var(--c-border);
}
.upload-preview-item span { font-size: 10px; color: var(--c-muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Summary chips */
.calculator-summary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
  min-height: 32px;
}
.summary-chip {
  font-size: var(--fs-xs);
  color: var(--c-gold);
  background: var(--c-gold-bg);
  border: 1px solid rgba(200,169,110,.2);
  border-radius: 20px;
  padding: 4px 12px;
}

/* Consent row */
.consent-row {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  cursor: pointer;
}
.consent-row input[type="checkbox"] {
  width: 16px; height: 16px;
  border: 1px solid var(--c-border2);
  border-radius: 3px;
  background: var(--c-surface2);
  flex-shrink: 0;
  margin-top: 2px;
  cursor: pointer;
  accent-color: var(--c-gold);
}
.consent-row span { font-size: var(--fs-xs); color: var(--c-muted); line-height: 1.5; }

/* Calculator footer */
.calculator-footer {
  border-top: 1px solid var(--c-border);
  padding: var(--sp-5) var(--sp-8);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.calculator-progress { }
.calculator-progress-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--sp-2);
}
.calculator-progress-meta span { font-size: var(--fs-xs); color: var(--c-muted); }
.calculator-progress-track {
  height: 3px;
  background: var(--c-faint);
  border-radius: 2px;
  overflow: hidden;
}
.calculator-progress-track span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--c-gold-dk), var(--c-gold));
  border-radius: 2px;
  transition: width var(--dur-mid) var(--ease-std);
  min-width: 0;
}

.calculator-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.calc-nav {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--c-border2);
  border-radius: 50%;
  color: var(--c-muted);
  font-size: 1rem;
  transition: all var(--dur-fast);
}
.calc-nav:hover:not(:disabled) { border-color: var(--c-gold-dk); color: var(--c-gold); }
.calc-nav:disabled { opacity: .3; pointer-events: none; }
.calc-next, .calc-submit { flex: 1; justify-content: center; }

/* Form status */
.form-status {
  font-size: var(--fs-sm);
  line-height: 1.5;
  min-height: 1.2em;
  padding: 0 var(--sp-8) var(--sp-5);
  transition: color var(--dur-fast);
}
.form-status.success { color: #6ab870; }
.form-status.error { color: #e07070; }

/* ── Footer ──────────────────────────────────────────────── */
.page-footer {
  margin-top: auto;
  padding: var(--sp-10) var(--sp-12);
  border-top: 1px solid var(--c-border);
  background: var(--c-surface);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
  flex-wrap: wrap;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  font-family: var(--ff-display);
  font-size: 1.1rem;
  color: var(--c-text);
}
.footer-copy {
  font-size: var(--fs-xs);
  color: var(--c-muted);
  text-align: center;
}
.footer-legal {
  display: flex;
  gap: var(--sp-6);
}
.footer-legal a {
  font-size: var(--fs-xs);
  color: var(--c-muted);
  transition: color var(--dur-fast);
}
.footer-legal a:hover { color: var(--c-gold); }

/* ── Mobile nav open state ───────────────────────────────── */
@media (max-width: 1024px) {
  .nav-toggle { display: flex; }
  .nav {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 99;
    flex-direction: column;
    justify-content: center;
    gap: var(--sp-8);
    background: var(--c-bg);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur-mid) var(--ease-std);
  }
  .nav a {
    font-size: var(--fs-xl);
    letter-spacing: .06em;
    text-transform: none;
  }
  .nav a::after { bottom: -6px; }
  .nav-open .nav {
    opacity: 1;
    pointer-events: auto;
  }
  .hero-notes { display: none; }
  .topbar { padding-left: var(--sp-6); padding-right: var(--sp-6); }
}

/* ── Responsive ──────────────────────────────────────────── */

/* 1280px */
@media (max-width: 1280px) {
  section { padding: var(--sp-20) var(--sp-10); }
  .offer-grid { grid-template-columns: repeat(3, 1fr); }
  .product-viewer { grid-template-columns: 360px 1fr auto; }
  .material-grid { grid-template-columns: repeat(2, 1fr); }
  .stage-grid { grid-template-columns: repeat(3, 1fr); }
  .calculator-layout { grid-template-columns: 1fr 460px; }
}

/* 1024px */
@media (max-width: 1024px) {
  section { padding: var(--sp-16) var(--sp-8); }
  .hero-copy { padding: var(--sp-12) var(--sp-8) var(--sp-12); }
  .offer-grid { grid-template-columns: 1fr 1fr; }
  .product-viewer { grid-template-columns: 300px 1fr; grid-template-rows: auto; }
  .product-side {
    grid-column: 1 / -1;
    border-left: none;
    border-top: 1px solid var(--c-border);
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: var(--sp-5) var(--sp-6);
  }
  .pricing-layout { grid-template-columns: 1fr; }
  .pricing-note { position: static; }
  .calculator-layout { grid-template-columns: 1fr; }
  .stage-grid { grid-template-columns: repeat(3, 1fr); }
  .topbar { padding-left: var(--sp-6); padding-right: var(--sp-6); }
}

/* 768px (tablet) */
@media (max-width: 768px) {
  :root {
    --fs-4xl: 2.75rem;
    --fs-3xl: 2.25rem;
    --fs-2xl: 1.875rem;
  }
  section { padding: var(--sp-12) var(--sp-5); }
  .topbar { padding: .9rem var(--sp-5); }

  .hero { min-height: 100svh; }
  .hero-copy { padding: var(--sp-8) var(--sp-5) var(--sp-10); }
  .hero-title { font-size: clamp(2.2rem, 9vw, 3rem); }
  .hero-metrics { gap: var(--sp-5) var(--sp-6); }
  .hero-metrics dt { font-size: var(--fs-lg); }

  .offer-grid { grid-template-columns: 1fr; gap: var(--sp-5); }
  .offer-preview { height: 240px; }

  .product-viewer {
    display: flex; flex-direction: column;
  }
  .product-visual-frame { height: 260px; }
  .product-copy { border-left: none; border-top: 1px solid var(--c-border); }
  .product-side { border-left: none; border-top: 1px solid var(--c-border); flex-direction: row; justify-content: space-between; padding: var(--sp-4) var(--sp-5); }

  .material-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
  .material-visual { height: 160px; }

  .stage-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-3); }

  .pricing-board article { grid-template-columns: 48px 1fr; }

  .calculator-grid.two-columns { grid-template-columns: 1fr; }

  .reviews-carousel { gap: var(--sp-3); }
  .carousel-arrow { width: 40px; height: 40px; font-size: 1rem; }
  .showcase-card { flex: 0 0 100%; }

  .page-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--sp-5);
    padding: var(--sp-8) var(--sp-5);
  }
}

/* 390px (mobile) */
@media (max-width: 480px) {
  section { padding: var(--sp-10) var(--sp-4); }
  .topbar { padding: .8rem var(--sp-4); }
  .hero-copy { padding: var(--sp-6) var(--sp-4) var(--sp-8); }
  .hero-title { font-size: clamp(1.9rem, 10vw, 2.5rem); }
  .hero-metrics { flex-direction: column; gap: var(--sp-4); }

  .offer-grid { grid-template-columns: 1fr; }
  .offer-preview { height: 200px; }

  .material-grid { grid-template-columns: 1fr; }
  .stage-grid { grid-template-columns: 1fr; }

  .choice-grid { grid-template-columns: 1fr 1fr; }
  .choice-grid.three-columns { grid-template-columns: 1fr; }

  .calculator-layout { gap: var(--sp-10); }
  .calculator-stage { padding: var(--sp-5); }
  .calculator-footer { padding: var(--sp-4) var(--sp-5); }

  .pricing-board article { grid-template-columns: 40px 1fr; }

  .offers-intro h2 { font-size: var(--fs-xl); }
  .section-head h2, .journey-head h2 { font-size: var(--fs-xl); }

  .carousel-arrow { width: 36px; height: 36px; font-size: .9rem; }
  .showcase-card { padding: var(--sp-5); }
}

/* ── Scroll-based nav active state ───────────────────────── */
/* Handled via JS */

/* ── Segmented controls (lang / currency) ─────────────────── */
.segmented-control {
  display: inline-flex;
  gap: 1px;
  border: 1px solid var(--c-border2);
  border-radius: var(--r-sm);
  overflow: hidden;
  flex-shrink: 0;
}
.segmented-control button {
  background: transparent;
  border: none;
  color: var(--c-muted);
  font-family: var(--ff-body);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .05em;
  padding: .3rem .6rem;
  cursor: pointer;
  transition: background var(--dur-fast) var(--ease-std), color var(--dur-fast) var(--ease-std);
  line-height: 1;
}
.segmented-control button.is-active {
  background: var(--c-gold);
  color: #0e0d0b;
}
.segmented-control button:hover:not(.is-active) {
  background: var(--c-gold-bg);
  color: var(--c-gold-lt);
}

/* Topbar controls (desktop) */
.topbar-controls {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}

/* Nav mobile switchers */
.nav-switchers {
  display: none;
  gap: var(--sp-3);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--c-border);
  margin-top: var(--sp-3);
}

/* Hide desktop controls on mobile */
@media (max-width: 900px) {
  .topbar-controls { display: none; }
  .nav-switchers { display: flex; }
}

/* ── Gold span for headings ───────────────────────────────── */
.gold-span { color: var(--c-gold); }

/* ── Contact section: compact 2-col layout ────────────────── */
.contact { padding: var(--sp-20) var(--sp-8); }
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  max-width: 1200px;
  margin: 0 auto;
  align-items: start;
}

/* Left intro */
.contact-intro { display: flex; flex-direction: column; gap: var(--sp-5); }
.contact-intro h2 {
  font-family: var(--ff-display);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 500;
  line-height: 1.25;
  color: var(--c-text);
}
.contact-lead { color: var(--c-muted); font-size: var(--fs-sm); line-height: 1.65; }
.contact-method-label { font-size: var(--fs-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--c-muted); }

/* Contact method tabs */
.contact-method-tabs { display: flex; gap: var(--sp-3); }
.contact-method-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border: 1px solid var(--c-border2);
  border-radius: var(--r-sm);
  background: var(--c-surface);
  color: var(--c-muted);
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  font-weight: 500;
  cursor: pointer;
  transition: border-color var(--dur-fast), color var(--dur-fast), background var(--dur-fast);
}
.contact-method-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.contact-method-btn.is-active {
  border-color: var(--c-gold);
  color: var(--c-gold);
  background: var(--c-gold-bg);
}
.contact-method-btn:hover:not(.is-active) {
  border-color: var(--c-border2);
  color: var(--c-text);
}
.contact-note-small { font-size: var(--fs-xs); color: var(--c-muted); line-height: 1.5; }
.contact-tags { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.contact-tags span {
  font-size: var(--fs-xs);
  padding: .25rem .65rem;
  border: 1px solid var(--c-border);
  border-radius: 99px;
  color: var(--c-muted);
}
.rate-updated { font-size: var(--fs-xs); color: var(--c-faint); }

/* ── Contact form card ──────────────────────────────────── */
.contact-form-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--r-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* 3-step wizard */
.calc-step { display: none; padding: var(--sp-6); flex-direction: column; gap: var(--sp-4); }
.calc-step.is-active { display: flex; }
.calc-step-head { display: flex; flex-direction: column; gap: var(--sp-1); }
.calc-step-label {
  font-size: var(--fs-sm);
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--c-gold);
}
.calc-step-sub { font-size: var(--fs-sm); color: var(--c-muted); }

.calc-fields { display: flex; flex-direction: column; gap: var(--sp-3); }
.calc-fields.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); }

.calc-field { display: flex; flex-direction: column; gap: var(--sp-2); }
.calc-field span { font-size: var(--fs-xs); font-weight: 600; color: var(--c-muted); letter-spacing: .03em; text-transform: uppercase; }
.calc-field input,
.calc-field select,
.calc-field textarea {
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  color: var(--c-text);
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  padding: .55rem .75rem;
  outline: none;
  transition: border-color var(--dur-fast);
  width: 100%;
}
.calc-field input:focus,
.calc-field select:focus,
.calc-field textarea:focus { border-color: var(--c-gold); }
.calc-field select { appearance: none; cursor: pointer; }
.calc-field textarea { resize: vertical; min-height: 72px; }

.consent-row { display: flex; align-items: flex-start; gap: var(--sp-3); font-size: var(--fs-xs); color: var(--c-muted); line-height: 1.5; }
.consent-row input[type=checkbox] { margin-top: .15rem; flex-shrink: 0; accent-color: var(--c-gold); }

/* Footer */
.calc-footer {
  padding: var(--sp-4) var(--sp-6);
  border-top: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  background: var(--c-surface2);
}
.calc-progress { display: flex; flex-direction: column; gap: var(--sp-2); }
.calc-progress-meta { display: flex; justify-content: space-between; font-size: var(--fs-xs); color: var(--c-muted); }
.calc-progress-track {
  height: 2px;
  background: var(--c-faint);
  border-radius: 99px;
  overflow: hidden;
}
.calc-progress-track span {
  display: block;
  height: 100%;
  background: var(--c-gold);
  transition: width .4s var(--ease-std);
  width: 0;
}
.calc-actions { display: flex; align-items: center; gap: var(--sp-3); }
.calc-back-btn {
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: var(--r-sm);
  color: var(--c-muted);
  font-family: var(--ff-body);
  font-size: var(--fs-sm);
  padding: .55rem .9rem;
  cursor: pointer;
  transition: border-color var(--dur-fast), color var(--dur-fast);
  white-space: nowrap;
}
.calc-back-btn:hover { border-color: var(--c-gold); color: var(--c-gold); }
.calc-back-btn:disabled { opacity: .35; pointer-events: none; }
.calc-fwd-btn { flex: 1; justify-content: center; }

.form-status {
  padding: var(--sp-3) var(--sp-6);
  font-size: var(--fs-xs);
  min-height: 2rem;
  text-align: center;
}
.form-status.success { color: #7dbf8f; }
.form-status.error { color: #e07070; }

/* ── Responsive: contact ──────────────────────────────────── */
@media (max-width: 1024px) {
  .contact-wrapper { grid-template-columns: 1fr; gap: var(--sp-8); }
  .contact { padding: var(--sp-16) var(--sp-6); }
}
@media (max-width: 768px) {
  .calc-fields.two-col { grid-template-columns: 1fr; }
  .contact { padding: var(--sp-12) var(--sp-4); }
  .contact-method-tabs { flex-wrap: wrap; }
  .calc-step { padding: var(--sp-5); }
  .calc-footer { padding: var(--sp-4) var(--sp-5); }
}
@media (max-width: 480px) {
  .contact { padding: var(--sp-10) var(--sp-4); }
  .segmented-control button { font-size: .65rem; padding: .28rem .5rem; }
}

/* ── Success state and Stagger animations ─────────────────── */
.stagger-child {
  opacity: 0;
  transform: translateY(22px);
}

.success-card {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--sp-10) var(--sp-6);
  min-height: 340px;
}

.success-icon-wrap {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--c-surface2);
  border: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--sp-6);
  box-shadow: 0 0 20px rgba(200, 169, 110, 0.12); /* gold tint glow */
}

.success-icon {
  width: 36px;
  height: 36px;
  display: block;
}

.success-icon-circle {
  stroke-dasharray: 166;
  stroke-dashoffset: 166;
  stroke-width: 2;
  stroke-miterlimit: 10;
  stroke: var(--c-gold);
  animation: successStroke 0.6s cubic-bezier(0.65, 0, 0.45, 1) forwards;
}

.success-icon-check {
  transform-origin: 50% 50%;
  stroke-dasharray: 48;
  stroke-dashoffset: 48;
  stroke-width: 2;
  stroke: var(--c-gold);
  stroke-linecap: round;
  stroke-linejoin: round;
  animation: successStroke 0.3s cubic-bezier(0.65, 0, 0.45, 1) 0.5s forwards;
}

@keyframes successStroke {
  100% {
    stroke-dashoffset: 0;
  }
}

.success-title {
  font-family: var(--ff-display);
  font-size: var(--fs-lg);
  font-weight: 500;
  color: var(--c-text);
  margin-bottom: var(--sp-3);
}

.success-body {
  font-size: var(--fs-sm);
  color: var(--c-muted);
  max-width: 290px;
  line-height: 1.6;
  margin-bottom: var(--sp-8);
}

.success-again-btn {
  margin-top: auto;
}