/* Ставропольский литейный цех
   Tokens: Onest 300/400 · coal / ash / lava · one easing · radius 999 or 0 */

@font-face {
  font-family: "Onest";
  src: url("/assets/fonts/onest-cyrillic.woff2") format("woff2");
  font-weight: 300 400;
  font-display: swap;
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: "Onest";
  src: url("/assets/fonts/onest-latin.woff2") format("woff2");
  font-weight: 300 400;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  --coal: #0E0B0A;
  --ash: #F2EDE7;
  --lava: #FF5B1F;

  --ease: cubic-bezier(.22, 1, .36, 1);
  --gutter: clamp(16px, 4vw, 56px);
  --way-r: 28px; /* card corner; the lava turns around it at this radius + its offset */
  --wrap: 1240px;
  --s1: 8px; --s2: 16px; --s3: 24px; --s4: 40px; --s5: 64px; --s6: 104px; --s7: 168px;

  --fg: var(--ash);
  --bg: var(--coal);
  --line: color-mix(in srgb, var(--fg) 16%, transparent);
  --surface: color-mix(in srgb, var(--fg) 5%, var(--bg));
}
.theme-light { --fg: var(--coal); --bg: var(--ash); --line: color-mix(in srgb, var(--coal) 14%, transparent); --surface: color-mix(in srgb, var(--coal) 6%, var(--ash)); }

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Onest", system-ui, sans-serif;
  font-weight: 400;
  font-size: clamp(15px, 1.1vw, 18px);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3 { margin: 0; font-weight: 300; hyphens: none; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; flex: none; }
:focus-visible { outline: 2px solid var(--lava); outline-offset: 3px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }

h1 { font-size: clamp(2.6rem, 7vw, 7.4rem); line-height: .9; letter-spacing: -.04em; }
h2 { font-size: clamp(2rem, 5vw, 4.6rem); line-height: .95; letter-spacing: -.03em; }
h3 { font-size: clamp(22px, 2.2vw, 32px); line-height: 1.05; letter-spacing: -.02em; }
.label { font-size: 12px; line-height: 1.8; text-transform: uppercase; letter-spacing: .18em; opacity: .6; }

/* ---------- buttons ---------- */
.btn {
  position: relative; overflow: hidden; isolation: isolate;
  display: inline-flex; align-items: center; gap: 12px;
  min-height: 52px; padding: 0 28px;
  border-radius: 999px; border: 0;
  font: inherit; font-size: 16px; line-height: 1; text-decoration: none; white-space: nowrap;
  cursor: pointer;
}
.btn--sm { min-height: 44px; padding: 0 20px; font-size: 15px; }
.btn__fill {
  position: absolute; inset: 0; z-index: -1;
  background: var(--lava);
  transform: scaleX(0); transform-origin: left;
  transition: transform 500ms var(--ease);
}
.btn__label { position: relative; transition: color 320ms var(--ease); }
.btn__arrow { width: 18px; height: 18px; transition: transform 520ms var(--ease); }
.btn:hover .btn__fill, .btn:focus-visible .btn__fill { transform: scaleX(1); }
.btn:hover .btn__arrow { transform: translate(3px, -3px); }

.btn--solid { background: var(--fg); color: var(--bg); }
.btn--solid:hover .btn__label, .btn--solid:hover .btn__arrow { color: var(--coal); }
.btn--ghost { background: transparent; color: var(--fg); box-shadow: inset 0 0 0 1px var(--line); }
.btn--ghost:hover .btn__label, .btn--ghost:hover .btn__arrow { color: var(--coal); }

/* molten state: lava reached the button */
.btn--lava, .is-hot .way__btn { background: var(--lava); color: var(--coal); box-shadow: none; }
.btn--lava::before, .is-hot .way__btn::before {
  content: ""; position: absolute; inset: -2px -60%; z-index: -2;
  background: linear-gradient(100deg, #b8280a 0%, var(--lava) 22%, #ffb347 38%, var(--lava) 52%, #c4300c 72%, var(--lava) 100%);
  animation: molten 5.5s var(--ease) infinite alternate;
}
.btn--lava .btn__fill, .is-hot .way__btn .btn__fill { background: var(--fg); }
.btn--lava:hover .btn__label, .btn--lava:hover .btn__arrow,
.is-hot .way:hover .way__btn .btn__label, .is-hot .way:hover .way__btn .btn__arrow { color: var(--bg); }
@keyframes molten { from { transform: translateX(-18%); } to { transform: translateX(18%); } }

.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; }
.cta-row__note { font-size: 13px; line-height: 1.4; opacity: .6; }

/* ---------- motion ---------- */
.rise, .reveal { opacity: 0; transform: translateY(28px); filter: blur(14px); }
.is-in .rise, .reveal.is-in {
  opacity: 1; transform: none; filter: blur(0);
  transition: opacity 900ms var(--ease) var(--d, 0ms), transform 900ms var(--ease) var(--d, 0ms), filter 900ms var(--ease) var(--d, 0ms);
}
[data-d="logo"] { --d: 300ms; } [data-d="nav"] { --d: 420ms; }
[data-d="h1"] { --d: 900ms; } [data-d="sub"] { --d: 1040ms; } [data-d="cta"] { --d: 1200ms; }
[data-d="2"] { --d: 100ms; } [data-d="3"] { --d: 200ms; } [data-d="4"] { --d: 300ms; }
.no-js .rise, .no-js .reveal { opacity: 1; transform: none; filter: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rise, .reveal { opacity: 1; transform: none; filter: none; transition: none !important; }
  .btn--lava::before, .is-hot .way__btn::before { animation: none; }
  * { transition-delay: 0ms !important; }
}

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 20; transition: background-color 500ms var(--ease), color 320ms var(--ease); }
.site-header__inner {
  max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto;
  display: flex; align-items: center; gap: var(--s3);
  padding: 14px var(--gutter);
}
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; margin-right: auto; }
.logo__mark { width: 26px; height: 26px; fill: currentColor; stroke: none; }
.logo__text { font-size: 14px; line-height: 1.1; letter-spacing: -.01em; }
.site-header__phone { text-decoration: none; font-size: 16px; white-space: nowrap; }
.site-header__phone:hover { text-decoration: underline; text-underline-offset: 4px; }
.nav { display: flex; gap: var(--s3); margin-right: var(--s3); }
.nav a { text-decoration: none; font-size: 15px; opacity: .75; transition: opacity 320ms var(--ease); }
.nav a:hover, .nav a[aria-current="page"] { opacity: 1; }

/* on the lava mass: coal ink until the header leaves it */
.site-header--lava { position: fixed; inset: 0 0 auto 0; color: var(--coal); }
.site-header--lava .btn--solid { background: var(--coal); color: var(--ash); }
.lava--static ~ .site-header--lava { background: var(--lava); }

.theme-light .site-header { background: color-mix(in srgb, var(--ash) 88%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--line); }
.theme-light .logo__mark { color: var(--lava); }
.theme-light .site-header .btn--solid { background: var(--lava); color: var(--coal); }
.theme-light .site-header .btn--solid .btn__fill { background: var(--coal); }
.theme-light .site-header .btn--solid:hover .btn__label { color: var(--ash); }

/* ---------- home: lava canvas + cast block ---------- */
.page-home { position: relative; }
.lava-wrap { position: absolute; inset: 0; overflow: hidden; z-index: 0; pointer-events: none;
  /* stand-in for the funnel while a fast scroll to the top outruns the canvas, so the header never sits on black */
  background: radial-gradient(130% 100% at 50% 0%, #ffb347 0%, #ff6a24 42%, #c2380c 78%, transparent 100%) top / 100% clamp(220px, 38svh, 420px) no-repeat, var(--coal); }
.lava { position: absolute; left: 0; top: 0; width: 100%; height: 100svh; z-index: 0; display: block; background: var(--coal); }
.page-home main, .page-home .site-footer { position: relative; z-index: 1; }
.lava-band { position: fixed; inset: 0 0 auto 0; width: 100%; height: var(--band-h, 110px); z-index: 15; pointer-events: none; }
.lava--static { background: radial-gradient(90% 46% at 50% 0%, #ffb347 0%, var(--lava) 40%, #7a1a05 72%, var(--coal) 100%) no-repeat, var(--coal); }

.cast {
  width: min(1080px, calc(100% - 2 * max(var(--gutter), 7vw))); margin: 0 auto;
  padding-top: clamp(220px, 38svh, 420px);
}
.cast__hero {
  min-height: calc(100svh - clamp(220px, 38svh, 420px));
  display: flex; flex-direction: column; justify-content: center; gap: var(--s3);
  padding: var(--s5) clamp(20px, 4vw, 56px) var(--s5);
}
.cast__title { max-width: 12ch; }
.cast__lead { max-width: 46ch; opacity: .78; font-size: clamp(16px, 1.3vw, 20px); }
.cast__about {
  display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s5);
  padding: var(--s5) clamp(20px, 4vw, 56px) var(--s6);
  border-top: 1px solid var(--line);
}
.cast__text { max-width: 44ch; font-size: clamp(17px, 1.4vw, 22px); line-height: 1.5; }
.facts { margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4) var(--s3); }
.facts__item { border-top: 1px solid var(--line); padding-top: var(--s2); }
.facts dt { font-size: clamp(28px, 3vw, 44px); line-height: 1; letter-spacing: -.03em; font-weight: 300; }
.facts dd { margin: 8px 0 0; font-size: 14px; opacity: .6; }

.ways { width: min(1080px, calc(100% - 2 * var(--gutter))); margin: 0 auto; padding: var(--s7) 0 var(--s6); }
.ways__title { margin-bottom: var(--s5); max-width: 14ch; }
.ways__grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(24px, 5vw, 80px); }
.way {
  position: relative; display: flex; flex-direction: column;
  background: var(--coal); text-decoration: none; border-radius: var(--way-r);
  padding: var(--s4) clamp(20px, 3vw, 40px) clamp(28px, 3vw, 40px);
  transition: transform 620ms var(--ease);
}
.way:nth-child(2) { margin-top: var(--s6); }
.way::before { /* hairline that becomes a molten edge */
  content: ""; position: absolute; inset: 0 var(--way-r) auto; height: 2px;
  background: linear-gradient(90deg, transparent, var(--lava) 30%, #ffb347 50%, var(--lava) 70%, transparent);
  opacity: 0; transform: scaleX(.2); transition: opacity 900ms var(--ease), transform 1200ms var(--ease);
}
.way.is-hot::before { opacity: 1; transform: none; }
.way:hover { transform: translateY(-6px); }
.way__media { position: relative; aspect-ratio: 5 / 4; display: grid; place-items: center; margin-bottom: var(--s4); }
.way__media::after { /* contact shadow */
  content: ""; position: absolute; left: 12%; right: 12%; bottom: 2%; height: 40px; z-index: 0;
  background: radial-gradient(rgba(255, 91, 31, .45), transparent 65%); filter: blur(18px); transform: scaleY(.35);
  opacity: 0; transition: opacity 900ms var(--ease);
}
.way.is-hot .way__media::after { opacity: 1; }
.way__media img { position: relative; z-index: 1; width: 88%; height: 100%; object-fit: contain; transition: transform 800ms var(--ease); filter: drop-shadow(0 18px 24px rgba(0, 0, 0, .55)); }
.way:hover .way__media img { transform: scale(1.04); }
.way__media .way__img--collage { width: 100%; filter: none; }
.way__body { display: grid; gap: var(--s2); }
.way__text { opacity: .7; max-width: 38ch; }
.way__btn { justify-self: start; margin-top: var(--s2); }
.way:hover .way__btn .btn__fill { transform: scaleX(1); }
.way:hover .way__btn .btn__label, .way:hover .way__btn .btn__arrow { color: var(--coal); }
.way:hover .way__btn .btn__arrow { transform: translate(3px, -3px); }

/* ---------- order / form ---------- */
.order { width: min(1080px, calc(100% - 2 * var(--gutter))); margin: 0 auto var(--s6); padding: var(--s6) clamp(20px, 4vw, 56px); background: var(--bg); }
.page-home .order { border-radius: var(--way-r); padding-bottom: var(--s5); margin-bottom: var(--s4); }
.theme-light .order { width: auto; max-width: calc(var(--wrap) + 2 * var(--gutter)); padding: var(--s6) var(--gutter); margin-bottom: 0; }
.order__head { display: grid; gap: var(--s2); margin-bottom: var(--s5); }
.order__lead { opacity: .7; max-width: 44ch; }
.order__grid { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: clamp(40px, 6vw, 96px); align-items: start; }

.lead-form { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s4) var(--s3); }
.field { display: grid; gap: 6px; margin: 0; padding: 0; border: 0; min-width: 0; }
.field--wide, .field--choice { grid-column: 1 / -1; }
.field__label { font-size: 13px; opacity: .6; padding: 0; }
.field__input {
  width: 100%; font: inherit; color: inherit; background: transparent;
  border: 0; border-bottom: 1px solid var(--line); border-radius: 0;
  padding: 10px 0; min-height: 44px; transition: border-color 320ms var(--ease);
}
.field__input::placeholder { color: inherit; opacity: .35; }
.field__input:focus { outline: none; border-bottom-color: var(--lava); }
.field__input--area { resize: vertical; min-height: 88px; line-height: 1.5; }
.field.is-invalid .field__input { border-bottom-color: #e5484d; }
.field__error { font-size: 13px; color: #e5484d; }
.theme-light .field__error, .theme-light .field.is-invalid .field__input { color: #b4231b; border-bottom-color: #b4231b; }

.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 6px; }
.chip { position: relative; cursor: pointer; }
.chip input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
.chip span { display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px; border-radius: 999px; box-shadow: inset 0 0 0 1px var(--line); font-size: 15px; transition: background-color 320ms var(--ease), color 320ms var(--ease), box-shadow 320ms var(--ease); }
.chip input:checked + span { background: var(--fg); color: var(--bg); box-shadow: none; }
.chip input:focus-visible + span { outline: 2px solid var(--lava); outline-offset: 3px; }

.file { position: relative; display: flex; align-items: center; gap: 12px; min-height: 52px; padding: 0 4px; border-bottom: 1px dashed var(--line); cursor: pointer; }
.file__input { position: absolute; inset: 0; opacity: 0; cursor: pointer; }
.file__icon { opacity: .7; }
.file__name { font-size: 15px; opacity: .75; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file:hover .file__icon { color: var(--lava); opacity: 1; }
.file__input:focus-visible ~ .file__name { outline: 2px solid var(--lava); outline-offset: 3px; }

.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.consent { display: flex; gap: 12px; align-items: flex-start; font-size: 13px; line-height: 1.5; opacity: .8; cursor: pointer; }
.consent input { width: 20px; height: 20px; margin: 1px 0 0; accent-color: var(--lava); flex: none; cursor: pointer; }
.consent a { text-underline-offset: 3px; }
.consent.is-invalid { color: #e5484d; opacity: 1; }
.theme-light .consent.is-invalid { color: #b4231b; }
.lead-form__actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 22px; }
.lead-form__actions .btn[disabled] { opacity: .6; cursor: progress; }
.lead-form__status { min-height: 1.6em; font-size: 15px; }
.lead-form__status.is-error { color: #ff8a65; }
.theme-light .lead-form__status.is-error { color: #b4231b; }
.lead-form__status a { text-underline-offset: 3px; }
.lead-done { grid-column: 1 / -1; display: grid; gap: var(--s2); padding: var(--s4) 0; }
.lead-done h3 { max-width: 16ch; }
.lead-done p { opacity: .7; max-width: 42ch; }

.contacts { display: grid; gap: var(--s3); padding-top: 4px; }
.contacts__phone { font-size: clamp(26px, 2.6vw, 38px); line-height: 1; letter-spacing: -.03em; text-decoration: none; font-weight: 300; }
.contacts__phone:hover { color: var(--lava); }
.contacts__list { list-style: none; margin: 0; padding: 0; display: grid; border-top: 1px solid var(--line); }
.contact { display: flex; align-items: center; gap: 14px; min-height: 56px; border-bottom: 1px solid var(--line); text-decoration: none; transition: padding-left 0s; }
.contact svg { transition: transform 520ms var(--ease), color 320ms var(--ease); }
.contact span { transition: transform 620ms var(--ease); }
.contact:hover svg { color: var(--lava); transform: translateX(4px); }
.contact:hover span { transform: translateX(8px); }
.contacts__meta { font-size: 14px; opacity: .6; }
.contacts__addr { display: flex; gap: 12px; font-size: 14px; line-height: 1.5; opacity: .75; text-decoration: none; max-width: 34ch; }
.contacts__addr:hover { opacity: 1; }
.contacts__addr svg { margin-top: 1px; }

/* ---------- consent bar ---------- */
.consent-bar {
  position: fixed; left: var(--gutter); bottom: 16px; z-index: 30;
  width: min(460px, calc(100% - 2 * var(--gutter)));
  display: grid; gap: 14px; padding: 20px 22px;
  background: color-mix(in srgb, var(--coal) 94%, transparent); color: var(--ash);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  font-size: 13px; line-height: 1.5;
  opacity: 0; transform: translateY(24px); filter: blur(10px);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease), filter 700ms var(--ease);
}
.consent-bar.is-in { opacity: 1; transform: none; filter: none; }
.consent-bar.is-leaving { opacity: 0; transform: translateY(24px); }
.consent-bar a { color: inherit; text-underline-offset: 3px; }
.consent-bar__text { opacity: .7; }
.consent-bar__check { display: flex; gap: 12px; align-items: flex-start; cursor: pointer; }
.consent-bar__check input { width: 20px; height: 20px; margin: 0; flex: none; accent-color: var(--lava); cursor: pointer; }
.consent-bar__btn { justify-self: start; color: var(--coal); }
.consent-bar__btn[disabled] { opacity: .35; cursor: not-allowed; }
.consent-bar__btn[disabled]::before { animation: none; }
@media (max-width: 640px) {
  .consent-bar { left: 8px; right: 8px; bottom: 8px; width: auto; padding: 16px; }
}

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); background: var(--bg); font-size: 14px; }
.site-footer__inner {
  max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto;
  padding: var(--s5) var(--gutter);
  display: grid; grid-template-columns: 1.3fr 1fr 1.3fr; gap: var(--s4);
}
.site-footer__col { display: grid; gap: 6px; align-content: start; }
.site-footer__col p, .site-footer__col a { opacity: .7; text-decoration: none; }
.site-footer__col a:hover { opacity: 1; text-decoration: underline; text-underline-offset: 3px; }
.site-footer__brand { opacity: 1 !important; font-size: 16px; margin-bottom: 4px; }
.site-footer__legal p { opacity: .55; }

/* ---------- section pages (light) ---------- */
.wrap { max-width: calc(var(--wrap) + 2 * var(--gutter)); margin: 0 auto; padding-inline: var(--gutter); }
.crumbs { font-size: 13px; opacity: .6; display: flex; gap: 8px; flex-wrap: wrap; }
.crumbs a { text-decoration: none; }
.crumbs a:hover { text-decoration: underline; text-underline-offset: 3px; }

.split { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 4fr); min-height: calc(100svh - 72px); }
.split__text { display: flex; flex-direction: column; justify-content: flex-end; gap: var(--s3);
  padding: var(--s5) var(--s5) clamp(56px, 12svh, 140px) max(var(--gutter), calc((100vw - var(--wrap)) / 2)); }
.split__text .crumbs { margin-bottom: auto; }
.split__title { max-width: 13ch; }
.split__lead { max-width: 48ch; opacity: .75; font-size: clamp(16px, 1.3vw, 20px); }
.split__media { position: relative; background: var(--surface); display: grid; place-items: center; overflow: hidden; }
.split__media img { position: relative; z-index: 1; width: 86%; max-height: 72svh; object-fit: contain; transform: translateY(var(--py, 0)); }
/* a pre-composed collage sits straight on the page colour; its own shadows are baked in */
.split__media--collage { background: transparent; }
.split__media.split__media--collage::after { content: none; }
.split__media--collage img { width: 76%; max-height: 72svh; justify-self: end; margin-right: max(var(--gutter), 3vw); }
.split__media--pull { overflow: visible; }
.split__media--pull img { width: 100%; max-height: 76svh; justify-self: start; margin: 0 0 0 -9vw; }
.split__media::after { content: ""; position: absolute; left: 14%; right: 14%; bottom: 14%; height: 60px;
  background: radial-gradient(rgba(0, 0, 0, .55), transparent 65%); filter: blur(18px); transform: scaleY(.25); }

.sec { padding-top: var(--s7); }
.split + .sec { padding-top: 132px; }   /* right after the first screen: ~200px from the hero CTA */
.split:has(+ .sec) .split__text { padding-bottom: var(--s4); }
.sec__head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: var(--s4); align-items: end; margin-bottom: var(--s5); }
.sec__title { max-width: 14ch; }
.sec__lead { max-width: 46ch; opacity: .7; justify-self: end; }

.points { display: grid; grid-template-columns: 1fr 1fr; gap: 0 clamp(32px, 6vw, 96px); counter-reset: pt; }
.point { display: grid; grid-template-columns: 56px 1fr; gap: var(--s3); padding: var(--s4) 0; border-top: 1px solid var(--line); counter-increment: pt; }
.point::before { content: "0" counter(pt); font-size: 14px; opacity: .45; padding-top: 6px; }
.point h3 { margin-bottom: 12px; }
.point p { opacity: .72; max-width: 46ch; }

.metals { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.metals__table { width: 100%; border-collapse: collapse; }
.metals__table th, .metals__table td { text-align: left; padding: 18px 0; border-top: 1px solid var(--line); vertical-align: top; font-weight: 400; }
.metals__table th { width: 48%; padding-right: var(--s3); opacity: .6; font-size: 15px; }
.metals__table td { font-size: clamp(18px, 1.6vw, 24px); letter-spacing: -.01em; line-height: 1.3; }
.metals__note { background: var(--coal); color: var(--ash); padding: var(--s4); display: grid; gap: var(--s2); }
.metals__note p { opacity: .75; }
.metals__note h3 { color: var(--ash); }

.tech { display: grid; grid-template-columns: 1fr 1fr; gap: 2px; background: var(--line); }
.tech__item { background: var(--bg); padding: var(--s4) clamp(20px, 3vw, 48px) var(--s5) 0; display: grid; gap: var(--s2); align-content: start; }
.tech__item + .tech__item { padding-left: clamp(20px, 3vw, 48px); }
.tech__abbr { font-size: clamp(56px, 8vw, 120px); line-height: .85; letter-spacing: -.05em; font-weight: 300; color: var(--lava); }
.tech__item p { opacity: .72; max-width: 40ch; }

/* catalogue */
.filters { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: var(--s4); }
.filter { font: inherit; font-size: 15px; color: inherit; background: transparent; border: 0; border-radius: 999px; min-height: 44px; padding: 0 18px; box-shadow: inset 0 0 0 1px var(--line); cursor: pointer; transition: background-color 320ms var(--ease), color 320ms var(--ease), box-shadow 320ms var(--ease); }
.filter:hover { box-shadow: inset 0 0 0 1px var(--fg); }
.filter[aria-pressed="true"] { background: var(--coal); color: var(--ash); box-shadow: none; }
.catalog { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); grid-auto-flow: dense; gap: clamp(12px, 1.6vw, 24px); }
.item { margin: 0; display: grid; grid-template-rows: 1fr auto; gap: 12px; transition: opacity 500ms var(--ease), transform 620ms var(--ease), filter 500ms var(--ease); }
.item.is-hidden { display: none; }
.item.is-leaving { opacity: 0; transform: scale(.96); filter: blur(8px); }
.item--wide { grid-column: span 2; }
.item--tall .item__media { aspect-ratio: 3 / 5; }
.item__media { position: relative; aspect-ratio: 4 / 5; background: var(--surface); display: grid; place-items: center; overflow: hidden; }
.item--wide .item__media { aspect-ratio: 16 / 10; }
.item__media img { position: absolute; inset: 9%; z-index: 1; width: 82%; height: 82%; object-fit: contain; transition: transform 800ms var(--ease); }
.item:hover .item__media img { transform: scale(1.05) translateY(-4px); }
.item figcaption { font-size: 15px; line-height: 1.35; }
.item figcaption span { display: block; font-size: 13px; opacity: .55; margin-top: 2px; }

.batch { margin-top: var(--s6); }
.batch__strip { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(280px, 34vw); gap: 4px; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 12px; scrollbar-width: thin; }
.batch__strip figure { margin: 0; scroll-snap-align: start; display: grid; gap: 10px; }
.batch__strip img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.batch__strip figcaption { font-size: 13px; opacity: .6; padding-left: var(--gutter); }
.batch__strip figure:not(:first-child) figcaption { padding-left: 0; }
.batch__head { margin-bottom: var(--s4); }

/* catalogue cards are links to product pages */
.item__link { display: grid; grid-template-rows: 1fr auto; gap: 12px; height: 100%; color: inherit; text-decoration: none; }
.item__link figcaption { transition: color 320ms var(--ease); }
.item__link:hover figcaption { color: var(--lava); }
.item__link:focus-visible { outline: 2px solid var(--lava); outline-offset: 4px; }
.catalog--related { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* product page */
.product { padding-top: var(--s4); }
.product__top { display: flex; flex-wrap: wrap; align-items: center; gap: 12px var(--s4); margin-bottom: var(--s4); }
.back { display: inline-flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 20px 0 14px; border-radius: 999px;
  box-shadow: inset 0 0 0 1px var(--line); text-decoration: none; font-size: 15px; transition: box-shadow 320ms var(--ease); }
.back svg { transition: transform 520ms var(--ease); }
.back:hover { box-shadow: inset 0 0 0 1px var(--fg); }
.back:hover svg { transform: translateX(-4px); }
.product__grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.product__media { position: relative; aspect-ratio: 1 / 1; background: var(--surface); }
.product__media img { position: absolute; inset: 7%; width: 86%; height: 86%; object-fit: contain; }
.product__info { display: grid; gap: var(--s3); padding-top: var(--s2); }
.product__group { font-size: 14px; opacity: .6; }
.product__title { font-size: clamp(2.1rem, 4.2vw, 3.8rem); line-height: .95; letter-spacing: -.035em; max-width: 14ch; }
.product__lead { max-width: 48ch; opacity: .78; }
.specs { margin: 0; border-top: 1px solid var(--line); }
.specs__row { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr); gap: var(--s3); padding: 14px 0; border-bottom: 1px solid var(--line); }
.specs dt { opacity: .6; font-size: 15px; }
.specs dd { margin: 0; font-size: clamp(16px, 1.3vw, 19px); }
.specs__row:first-child dd { font-weight: 400; letter-spacing: .02em; }
.product .cta-row { margin-top: var(--s2); }
.product + .sec { padding-top: var(--s6); }

/* steps with a lava line that fills on scroll */
.steps { position: relative; list-style: none; margin: 0; padding: 0 0 0 clamp(36px, 6vw, 96px); display: grid; gap: var(--s5); counter-reset: st; }
.steps::before, .steps__lava { content: ""; position: absolute; left: 6px; top: 8px; bottom: 8px; width: 3px; border-radius: 999px; }
.steps::before { background: var(--line); }
.steps__lava { background: linear-gradient(180deg, #ffb347, var(--lava) 40%, #a8240a); transform-origin: top; transform: scaleY(var(--p, 0)); box-shadow: 0 0 18px rgba(255, 91, 31, .55); }
.step { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr); gap: var(--s4); counter-increment: st; }
.step::before { content: ""; position: absolute; left: calc(-1 * clamp(36px, 6vw, 96px) + 1px); top: 6px; width: 13px; height: 13px; border-radius: 50%; background: var(--bg); box-shadow: inset 0 0 0 2px var(--line); transition: background-color 500ms var(--ease), box-shadow 500ms var(--ease); }
.step.is-hot::before { background: var(--lava); box-shadow: 0 0 0 4px rgba(255, 91, 31, .2); }
.step h3::before { content: counter(st) ". "; opacity: .4; }
.step p { opacity: .72; max-width: 52ch; }

/* FAQ */
.faq { border-top: 1px solid var(--line); }
.faq__item { border-bottom: 1px solid var(--line); }
.faq__q { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: var(--s3); padding: 22px 0; min-height: 56px; background: none; border: 0; color: inherit; font: inherit; font-size: clamp(17px, 1.4vw, 21px); text-align: left; cursor: pointer; letter-spacing: -.01em; }
.faq__q svg { transition: transform 520ms var(--ease); }
.faq__q[aria-expanded="true"] svg { transform: rotate(180deg); }
.faq__a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows 620ms var(--ease); }
.faq__a > div { overflow: hidden; }
.faq__a p { padding-bottom: 24px; opacity: 0; transform: translateY(-6px); max-width: 64ch; transition: opacity 500ms var(--ease), transform 500ms var(--ease); }
.faq__item.is-open .faq__a { grid-template-rows: 1fr; }
.faq__item.is-open .faq__a p { opacity: .75; transform: none; }

.cats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0 var(--s4); }
.cat { border-top: 1px solid var(--line); padding-top: var(--s3); display: grid; gap: 12px; align-content: start; }
.cat p { opacity: .72; font-size: 15px; }

.dark-band { background: var(--coal); color: var(--ash); --fg: var(--ash); --bg: var(--coal); --line: color-mix(in srgb, var(--ash) 16%, transparent); margin-top: var(--s7); }
.dark-band .order { padding-top: var(--s6); }

/* legal pages */
.doc { max-width: 760px; margin: 0 auto; padding: var(--s6) var(--gutter); }
.doc h1 { font-size: clamp(2rem, 4.4vw, 3.6rem); margin: var(--s3) 0 var(--s4); max-width: 20ch; }
.doc h2 { font-size: clamp(20px, 2vw, 26px); line-height: 1.2; letter-spacing: -.015em; margin: var(--s5) 0 var(--s2); }
.doc p, .doc li { margin: 0 0 12px; max-width: 68ch; }
.doc ul { padding-left: 20px; }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .catalog { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .catalog--related { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cats { grid-template-columns: 1fr 1fr; gap: var(--s4) var(--s4); }
}
@media (max-width: 860px) {
  /* stacked layout (tablets and phones): lava flows run down the edges, tighter section rhythm */
  .ways__title { padding-inline: 24px; margin-inline: auto; margin-bottom: var(--s4); text-align: center; }   /* clear of the side lava flows */
  .cast__about { padding-bottom: var(--s4); }
  .ways { padding-top: var(--s5); }
  .sec { padding-top: var(--s6); }
  .nav { display: none; }
  .cast__about, .order__grid, .metals, .sec__head, .split { grid-template-columns: 1fr; }
  .sec__lead { justify-self: start; }
  .ways__grid { grid-template-columns: 1fr; }
  .way:nth-child(2) { margin-top: 0; }
  .points, .tech { grid-template-columns: 1fr; }
  .tech__item + .tech__item { padding-left: 0; }
  .step { grid-template-columns: 1fr; gap: var(--s2); }
  .split { min-height: 0; }
  .split__text { padding: var(--s5) var(--gutter) var(--s5); }
  .split__media { min-height: 62svh; }
  .product__grid { grid-template-columns: 1fr; }
  .product__title { max-width: none; }
  .split__media--collage { display: none; }   /* phones: the hero is text + call to action only */
  .split:has(.split__media--collage) .split__text, .split:has(+ .sec) .split__text { padding-bottom: var(--s2); }
  .split:has(.split__media--collage) + .sec { padding-top: var(--s5); }
  .sec:has(#metals), .sec:has(.tech) + .sec { padding-top: var(--s5); }
  .dark-band { margin-top: var(--s5); }
  .site-footer__inner { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  :root { --way-r: 20px; }
  .site-header__phone { display: none; }
  .logo__text { font-size: 13px; }
  .lead-form { grid-template-columns: 1fr; }
  .catalog { grid-template-columns: 1fr 1fr; }
  .item--wide { grid-column: 1 / -1; }
  .cats { grid-template-columns: 1fr; }
  .facts { gap: var(--s3) var(--s2); }
  .cast__hero, .cast__about { padding-inline: 18px; }
  .cast { padding-top: clamp(170px, 30svh, 260px); }
  .lava-wrap { background-size: 100% clamp(170px, 30svh, 260px), auto; }
  .cast__hero { min-height: 0; justify-content: flex-start; padding-block: 36px var(--s5); }
  .order { padding-inline: 18px; }
  .btn { padding: 0 22px; }
}