/* PLASTAR — plastic packaging, Lviv.
   One family (Geologica) carries the whole page: headings sit at the sharp end of its SHRP axis
   and body copy at the soft end, the way a moulded part has a sharp parting line and soft walls.
   Ground is mould-steel petrol; the two lights are the melt (amber) and the cooling water (teal). */

@font-face { font-family: "Geologica"; font-style: normal; font-weight: 100 900; font-display: swap;
  src: url("fonts/geo-cyr-ext.woff2") format("woff2");
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F; }
@font-face { font-family: "Geologica"; font-style: normal; font-weight: 100 900; font-display: swap;
  src: url("fonts/geo-cyr.woff2") format("woff2");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116; }
@font-face { font-family: "Geologica"; font-style: normal; font-weight: 100 900; font-display: swap;
  src: url("fonts/geo-latin-ext.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308,
    U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C4, U+2113,
    U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "Geologica"; font-style: normal; font-weight: 100 900; font-display: swap;
  src: url("fonts/geo-latin.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304,
    U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }

:root {
  color-scheme: dark;
  --pst-ground: #0c1517;
  --pst-ground-2: #0f1c1f;
  --pst-panel: #15252a;
  --pst-panel-2: #1b2f35;
  --pst-panel-3: #223a41;
  --pst-ink: #e7efec;
  --pst-ink-2: #b2c4bf;
  --pst-ink-3: #8ea49f;
  --pst-melt: #f39a3d;
  --pst-melt-2: #ffc27a;
  --pst-melt-ink: #1d1206;
  --pst-cool: #67cfc2;
  --pst-cool-2: #9fe3d9;
  --pst-milk: #dce8e2;
  --pst-edge: rgba(220, 232, 226, 0.12);
  --pst-radius: 18px;
  --pst-radius-s: 11px;
  --pst-wide: 1240px;
  --pst-read: 64ch;
  --pst-sharp: "SHRP" 100, "CRSV" 0;
  --pst-soft: "SHRP" 0, "CRSV" 0;
  --pst-ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { background: var(--pst-ground); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: "Geologica", system-ui, sans-serif;
  font-variation-settings: var(--pst-soft);
  font-weight: 340;
  font-size: 1.125rem;
  line-height: 1.62;
  color: var(--pst-ink);
  background:
    radial-gradient(120% 70% at 100% 0%, rgba(243, 154, 61, 0.07), transparent 60%),
    radial-gradient(90% 60% at 0% 100%, rgba(103, 207, 194, 0.06), transparent 62%),
    linear-gradient(180deg, var(--pst-ground) 0%, var(--pst-ground-2) 55%, var(--pst-ground) 100%);
  overflow-x: clip;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: var(--pst-cool-2); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { color: var(--pst-melt-2); }
:focus-visible { outline: 3px solid var(--pst-melt); outline-offset: 3px; border-radius: 6px; }
::selection { background: var(--pst-melt); color: var(--pst-melt-ink); }

h1, h2, h3 {
  font-variation-settings: var(--pst-sharp);
  font-weight: 720;
  line-height: 1.06;
  letter-spacing: -0.022em;
  margin: 0 0 0.45em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.5rem, 5.6vw, 4.75rem); letter-spacing: -0.03em; }
h2 { font-size: clamp(1.95rem, 3.4vw, 3.05rem); }
h3 { font-size: clamp(1.25rem, 1.8vw, 1.5rem); font-weight: 640; letter-spacing: -0.01em; }
p { margin: 0 0 1em; max-width: var(--pst-read); }
.pst-lead { font-size: clamp(1.18rem, 1.7vw, 1.38rem); line-height: 1.55; color: var(--pst-ink); font-weight: 320; }
.pst-label {
  font-size: 0.8rem; font-weight: 620; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--pst-cool); font-variation-settings: var(--pst-sharp);
}
.pst-label--melt { color: var(--pst-melt-2); }
.pst-quiet { color: var(--pst-ink-2); }
.pst-small { font-size: 0.92rem; color: var(--pst-ink-2); }

.pst-skip {
  position: absolute; left: 12px; top: -80px; z-index: 50; padding: 12px 18px;
  background: var(--pst-melt); color: var(--pst-melt-ink); border-radius: var(--pst-radius-s);
  font-weight: 650; text-decoration: none; transition: top .2s var(--pst-ease);
}
.pst-skip:focus { top: 12px; }

/* ambient light: the melt glow cools to teal as the page is read (see motion block) */
.pst-glow { position: fixed; inset: 0; pointer-events: none; z-index: -1; }
.pst-glow--heat { background: radial-gradient(60% 45% at 92% 6%, rgba(243, 154, 61, 0.16), transparent 70%); }
.pst-glow--cool { opacity: 0.35; background: radial-gradient(70% 55% at 6% 96%, rgba(103, 207, 194, 0.15), transparent 70%); }

/* ---------- masthead: name first, mark to the RIGHT of it ---------- */
.pst-mast {
  position: sticky; top: 0; z-index: 30;
  background: rgba(12, 21, 23, 0.82);
  -webkit-backdrop-filter: blur(14px) saturate(1.2); backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--pst-edge);
}
.pst-mast__in {
  max-width: var(--pst-wide); margin: 0 auto; padding: 12px 24px;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 18px 28px;
}
.pst-brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: var(--pst-ink); min-height: 48px; }
.pst-brand__word { height: 26px; width: auto; }
.pst-brand__mark { width: 44px; height: 44px; object-fit: contain; transition: transform .5s var(--pst-ease); }
.pst-brand:hover .pst-brand__mark { transform: translateY(-3px) rotate(-6deg); }

.pst-tabs { justify-self: center; }
.pst-tabs__track {
  position: relative; display: flex; gap: 4px; margin: 0; padding: 5px; list-style: none;
  background: var(--pst-panel); border-radius: 15px; box-shadow: inset 0 0 0 1px var(--pst-edge);
}
.pst-tabs__shot {
  position: absolute; top: 5px; left: 0; height: calc(100% - 10px); width: 0; border-radius: 11px;
  background: rgba(103, 207, 194, 0.16); opacity: 0;
  transition: transform .38s var(--pst-ease), width .38s var(--pst-ease), opacity .2s linear;
  pointer-events: none;
}
.pst-tabs__track:hover .pst-tabs__shot, .pst-tabs__track:focus-within .pst-tabs__shot { opacity: 1; }
.pst-tabs a {
  position: relative; display: flex; align-items: center; justify-content: center;
  min-height: 44px; padding: 0 17px; border-radius: 11px; white-space: nowrap;
  font-size: 0.95rem; font-weight: 560; color: var(--pst-ink); text-decoration: none;
  background: rgba(220, 232, 226, 0.045);
  font-variation-settings: var(--pst-sharp);
  transition: background-color .25s var(--pst-ease), color .25s var(--pst-ease);
}
.pst-tabs a:hover { color: var(--pst-cool-2); }
.pst-tabs a[aria-current="page"] { background: var(--pst-melt); color: var(--pst-melt-ink); font-weight: 680; }
.pst-tabs a[aria-current="page"]:hover { color: var(--pst-melt-ink); }

.pst-lang { display: inline-flex; padding: 4px; gap: 3px; border-radius: 13px; background: var(--pst-panel); box-shadow: inset 0 0 0 1px var(--pst-edge); }
.pst-lang a {
  min-width: 46px; min-height: 40px; display: grid; place-items: center; padding: 0 10px; border-radius: 9px;
  font-size: 0.82rem; font-weight: 640; letter-spacing: 0.08em; text-decoration: none; color: var(--pst-ink-2);
  background: rgba(220, 232, 226, 0.04); transition: background-color .25s var(--pst-ease), color .25s;
}
.pst-lang a:hover { color: var(--pst-ink); background: var(--pst-panel-2); }
.pst-lang a[aria-current="true"] { background: var(--pst-panel-3); color: var(--pst-ink); }

/* ---------- buttons ---------- */
.pst-btn {
  display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 24px;
  border-radius: 14px; border: 0; cursor: pointer; text-decoration: none;
  font: inherit; font-size: 1rem; font-weight: 660; font-variation-settings: var(--pst-sharp);
  background: var(--pst-melt); color: var(--pst-melt-ink);
  box-shadow: 0 10px 30px -12px rgba(243, 154, 61, 0.75);
  transition: transform .25s var(--pst-ease), box-shadow .25s var(--pst-ease), background-color .25s;
}
.pst-btn:hover { color: var(--pst-melt-ink); background: var(--pst-melt-2); transform: translateY(-2px); box-shadow: 0 16px 34px -12px rgba(243, 154, 61, 0.9); }
.pst-btn svg { width: 18px; height: 18px; transition: transform .25s var(--pst-ease); }
.pst-btn:hover svg { transform: translateX(3px); }
.pst-btn--ghost { background: rgba(220, 232, 226, 0.07); color: var(--pst-ink); box-shadow: inset 0 0 0 1px rgba(220, 232, 226, 0.22); }
.pst-btn--ghost:hover { background: rgba(220, 232, 226, 0.13); color: var(--pst-ink); box-shadow: inset 0 0 0 1px rgba(220, 232, 226, 0.4); }
.pst-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }

/* ---------- hero: the banner owns the screen, the headline sits in its dark half ---------- */
.pst-hero { position: relative; min-height: clamp(600px, 90vh, 860px); display: grid; align-items: center; overflow: clip; isolation: isolate; }
.pst-hero__pic { position: absolute; inset: 0; z-index: -2; }
.pst-hero__pic img { width: 100%; height: 100%; object-fit: cover; object-position: 72% 50%; }
.pst-hero::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(12, 21, 23, 0.97) 0%, rgba(12, 21, 23, 0.9) 28%, rgba(12, 21, 23, 0.5) 50%, rgba(12, 21, 23, 0) 70%),
    linear-gradient(0deg, var(--pst-ground) 0%, rgba(12, 21, 23, 0) 22%);
}
.pst-hero__haze {
  position: absolute; z-index: -1; right: 6%; top: 18%; width: 34%; height: 46%;
  background: radial-gradient(closest-side, rgba(255, 194, 122, 0.22), transparent);
  filter: blur(18px); opacity: 0.55; pointer-events: none;
}
.pst-hero__in { width: 100%; max-width: var(--pst-wide); margin: 0 auto; padding: 120px 24px 110px; }
.pst-hero__copy { max-width: 600px; }
.pst-hero h1 { margin-top: 18px; }
.pst-hero h1 span { display: block; }
.pst-hero h1 em { font-style: normal; color: var(--pst-melt-2); }
.pst-hero .pst-lead { max-width: 37ch; }
.pst-hero__note { margin-top: 26px; font-size: 0.85rem; color: var(--pst-ink-3); max-width: 46ch; }

/* ---------- the cycle: content column + the dial that follows ---------- */
.pst-wrap { max-width: var(--pst-wide); margin: 0 auto; padding: 0 24px; }
.pst-cycle { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 0 64px; padding-top: 40px; }
.pst-phase { position: relative; padding: 72px 0; scroll-margin-top: 110px; }
.pst-phase + .pst-phase { margin-top: 8px; }
.pst-phase__tag { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 18px; }
.pst-phase__tag b {
  display: inline-grid; place-items: center; min-width: 38px; height: 38px; padding: 0 10px; border-radius: 12px;
  background: var(--pst-panel-2); color: var(--pst-melt-2); font-weight: 700; font-size: 0.85rem; letter-spacing: 0.06em;
}
.pst-dial { position: relative; }
.pst-dial__sticky { position: sticky; top: 110px; padding: 22px 0 30px; }
.pst-dial svg { width: 100%; height: auto; overflow: visible; }
.pst-dial__ring { fill: none; stroke: var(--pst-panel-2); stroke-width: 22; }
.pst-dial__arc { fill: none; stroke: var(--pst-panel-3); stroke-width: 22; transition: stroke .35s var(--pst-ease); cursor: pointer; }
.pst-dial a:hover .pst-dial__arc, .pst-dial a:focus-visible .pst-dial__arc { stroke: var(--pst-cool); }
.pst-dial a.is-on .pst-dial__arc { stroke: var(--pst-melt); }
.pst-dial a:focus-visible { outline: none; }
.pst-dial__hand { stroke: var(--pst-milk); stroke-width: 4; stroke-linecap: round; fill: var(--pst-milk); transform-origin: 140px 140px; transition: transform .5s var(--pst-ease); }
.pst-dial__name { fill: var(--pst-ink); font-family: "Geologica", sans-serif; font-size: 22px; font-weight: 700; font-variation-settings: var(--pst-sharp); }
.pst-dial__sub { fill: var(--pst-ink-3); font-family: "Geologica", sans-serif; font-size: 12px; letter-spacing: 0.14em; }
.pst-dial__list { list-style: none; margin: 18px 0 0; padding: 0; display: grid; gap: 6px; }
.pst-dial__list a {
  display: flex; align-items: center; gap: 10px; min-height: 44px; padding: 0 14px; border-radius: 12px;
  text-decoration: none; color: var(--pst-ink-2); background: rgba(220, 232, 226, 0.035); font-size: 0.95rem;
  transition: background-color .25s var(--pst-ease), color .25s;
}
.pst-dial__list a::before { content: ""; width: 9px; height: 9px; border-radius: 50%; background: var(--pst-panel-3); transition: background-color .25s, transform .25s var(--pst-ease); }
.pst-dial__list a:hover { background: var(--pst-panel); color: var(--pst-ink); }
.pst-dial__list a.is-on { background: var(--pst-panel-2); color: var(--pst-ink); }
.pst-dial__list a.is-on::before { background: var(--pst-melt); transform: scale(1.35); }
.pst-dial__list li:nth-child(2) a { margin-left: 10px; }
.pst-dial__list li:nth-child(3) a { margin-left: 22px; }
.pst-dial__list li:nth-child(4) a { margin-left: 22px; }
.pst-dial__list li:nth-child(5) a { margin-left: 10px; }

/* granule: the picture fades into the page with no edge at all, its label set in its dark sky */
.pst-feather { position: relative; margin: 34px -24px 6px 0; }
.pst-feather img {
  width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 0;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 30%, #000 84%, transparent 100%),
    linear-gradient(180deg, transparent 0%, #000 14%, #000 72%, transparent 100%);
  -webkit-mask-composite: source-in;
  mask-image: linear-gradient(90deg, transparent 0%, #000 30%, #000 84%, transparent 100%),
    linear-gradient(180deg, transparent 0%, #000 14%, #000 72%, transparent 100%);
  mask-composite: intersect;
}
.pst-feather__over { position: absolute; left: 8%; top: 9%; max-width: 46%; }
.pst-feather__over p { font-size: clamp(1.2rem, 2vw, 1.55rem); line-height: 1.3; font-weight: 520; color: var(--pst-ink); font-variation-settings: var(--pst-sharp); margin: 8px 0 0; }

/* melt: one big statement, then the reading in two columns */
.pst-statement { font-size: clamp(1.6rem, 3vw, 2.5rem); line-height: 1.18; font-weight: 600; letter-spacing: -0.02em; font-variation-settings: var(--pst-sharp); max-width: 22ch; margin: 0 0 28px; }
.pst-statement em { font-style: normal; color: var(--pst-melt-2); }
.pst-two { columns: 2 280px; column-gap: 40px; }
.pst-two p { break-inside: avoid; }

/* hold & cool: the relative shape of one cycle, drawn as a bar */
.pst-shape { margin: 30px 0 10px; padding: 26px; border-radius: var(--pst-radius); background: var(--pst-panel); }
.pst-shape__bar { display: flex; gap: 4px; height: 58px; }
.pst-shape__seg {
  position: relative; border-radius: 9px; display: flex; align-items: flex-end; padding: 0 0 8px 10px; overflow: clip;
  font-size: 0.78rem; font-weight: 620; letter-spacing: 0.04em; color: var(--pst-ground); white-space: nowrap;
  transform-origin: left center;
}
.pst-shape__seg span { position: relative; }
.pst-shape__seg--close { flex: 6; background: #4e6a71; color: var(--pst-ink); }
.pst-shape__seg--fill { flex: 7; background: var(--pst-melt); }
.pst-shape__seg--hold { flex: 12; background: var(--pst-melt-2); }
.pst-shape__seg--cool { flex: 46; background: var(--pst-cool); }
.pst-shape__seg--open { flex: 8; background: var(--pst-cool-2); }
.pst-shape__seg--eject { flex: 7; background: var(--pst-milk); }
.pst-shape__legend { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 16px 0 0; padding: 0; list-style: none; font-size: 0.9rem; color: var(--pst-ink-2); }
.pst-shape__legend b { color: var(--pst-ink); font-weight: 620; }

/* open: the figure and a card that crosses its corner (overlap placement) */
.pst-overlap { position: relative; display: grid; grid-template-columns: 1.2fr 1fr; align-items: end; margin-top: 30px; }
.pst-overlap figure { margin: 0; grid-column: 1 / 2; grid-row: 1; }
.pst-overlap img { width: 100%; aspect-ratio: 4 / 3.2; object-fit: cover; border-radius: var(--pst-radius); }
.pst-overlap__card {
  grid-column: 2 / 3; grid-row: 1; margin: 0 0 -34px -90px; position: relative; z-index: 1;
  padding: 26px 26px 22px; border-radius: var(--pst-radius); background: rgba(21, 37, 42, 0.94);
  box-shadow: 0 24px 60px -24px rgba(0, 0, 0, 0.8), inset 0 0 0 1px var(--pst-edge);
}
.pst-overlap__card p:last-child { margin-bottom: 0; }
.pst-overlap figcaption { position: absolute; left: 22px; bottom: 20px; max-width: 48%; font-size: 0.8rem; color: var(--pst-ink); letter-spacing: 0.04em; }
.pst-overlap figure { position: relative; }
.pst-overlap figure::after {
  content: ""; position: absolute; inset: 0; border-radius: var(--pst-radius); pointer-events: none;
  background: linear-gradient(0deg, rgba(8, 14, 16, 0.86) 0%, rgba(8, 14, 16, 0) 38%);
}
.pst-overlap figcaption { z-index: 1; }

/* stack: a full-bleed band, the section opener set in its empty left side */
.pst-band { position: relative; margin: 60px 0 0; min-height: clamp(460px, 62vw, 700px); display: grid; align-items: center; overflow: clip; isolation: isolate; scroll-margin-top: 90px; }
.pst-band__pic {
  position: absolute; inset: 0; z-index: -2; overflow: clip;
  -webkit-mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 82%, transparent 100%);
  mask-image: linear-gradient(180deg, transparent 0%, #000 14%, #000 82%, transparent 100%);
}
.pst-band__pic img { width: 100%; height: 100%; object-fit: cover; object-position: 80% 50%; }
.pst-band::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, rgba(12, 21, 23, 0.95) 0%, rgba(12, 21, 23, 0.82) 34%, rgba(12, 21, 23, 0.2) 62%, rgba(12, 21, 23, 0) 80%);
}
.pst-band__in { max-width: var(--pst-wide); width: 100%; margin: 0 auto; padding: 80px 24px; }
.pst-band__copy { max-width: 560px; }

/* brief: what a brief carries, as chips beside the reasons */
.pst-brief { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; padding: 96px 0 40px; }
.pst-chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 6px 0 26px; padding: 0; list-style: none; }
.pst-chips li { padding: 11px 16px; border-radius: 999px; background: var(--pst-panel); color: var(--pst-ink); font-size: 0.95rem; font-weight: 480; box-shadow: inset 0 0 0 1px var(--pst-edge); }
.pst-chips li::before { content: "+"; color: var(--pst-melt-2); font-weight: 700; margin-right: 8px; }

/* registered details with the mark at a real size */
.pst-reg { display: grid; grid-template-columns: 200px 1fr; gap: 40px; align-items: center; margin: 70px 0 30px; padding: 40px; border-radius: 26px; background: linear-gradient(135deg, var(--pst-panel) 0%, var(--pst-ground-2) 100%); }
.pst-reg__mark { width: 200px; height: auto; }
.pst-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 20px 30px; margin: 0; }
.pst-facts div { min-width: 0; }
.pst-facts dt { font-size: 0.78rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--pst-ink-3); font-weight: 600; margin-bottom: 4px; }
.pst-facts dd { margin: 0; font-size: 1.02rem; color: var(--pst-ink); overflow-wrap: anywhere; }

/* ---------- sub-pages ---------- */
.pst-pagehead { padding: 76px 0 30px; }
.pst-pagehead h1 { max-width: 18ch; }
.pst-split { display: grid; grid-template-columns: 1fr 1fr; min-height: 560px; margin: 10px 0 40px; }
.pst-split__pic { position: relative; overflow: clip; }
.pst-split__pic img { width: 100%; height: 100%; object-fit: cover; }
.pst-split__pic::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(12, 21, 23, 0) 52%, rgba(12, 21, 23, 0.9) 100%); }
.pst-split__over { position: absolute; left: 28px; right: 28px; bottom: 26px; z-index: 1; }
.pst-split__over p { margin: 6px 0 0; font-size: 1.22rem; line-height: 1.3; font-weight: 540; color: var(--pst-ink); font-variation-settings: var(--pst-sharp); max-width: 30ch; }
.pst-split__copy { padding: 52px 48px; background: var(--pst-panel); display: flex; flex-direction: column; justify-content: center; }

.pst-section { padding: 56px 0; }
.pst-section > h2 { max-width: 20ch; }
.pst-cols { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 22px; margin-top: 26px; }
.pst-tile { padding: 26px; border-radius: var(--pst-radius); background: var(--pst-panel); transition: transform .3s var(--pst-ease), background-color .3s; }
.pst-tile:hover { transform: translateY(-4px); background: var(--pst-panel-2); }
.pst-tile p:last-child { margin-bottom: 0; }
.pst-tile .pst-label { display: block; margin-bottom: 10px; }

/* resin chooser */
.pst-resins { margin-top: 26px; }
.pst-resins__codes { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 18px; }
.pst-resins__codes button {
  display: inline-flex; align-items: center; gap: 10px; min-height: 52px; padding: 0 18px 0 8px; border: 0; border-radius: 14px;
  font: inherit; font-size: 1rem; font-weight: 600; color: var(--pst-ink); background: var(--pst-panel); cursor: pointer;
  box-shadow: inset 0 0 0 1px var(--pst-edge); transition: background-color .25s var(--pst-ease), box-shadow .25s;
}
.pst-resins__codes button b {
  display: grid; place-items: center; width: 36px; height: 36px; border-radius: 10px;
  background: var(--pst-panel-3); color: var(--pst-cool-2); font-size: 0.95rem;
}
.pst-resins__codes button:hover { background: var(--pst-panel-2); }
.pst-resins__codes button[aria-selected="true"] { background: var(--pst-panel-2); box-shadow: inset 0 0 0 2px var(--pst-melt); }
.pst-resins__codes button[aria-selected="true"] b { background: var(--pst-melt); color: var(--pst-melt-ink); }
.pst-resin { padding: 30px; border-radius: var(--pst-radius); background: var(--pst-panel); margin-bottom: 12px; }
.pst-resin h3 { display: flex; align-items: baseline; gap: 14px; }
.pst-resin h3 small { font-size: 0.85rem; color: var(--pst-ink-3); font-weight: 480; letter-spacing: 0.06em; }
.pst-resin dl { display: grid; grid-template-columns: 150px 1fr; gap: 8px 20px; margin: 18px 0 0; }
.pst-resin dt { color: var(--pst-ink-3); font-size: 0.92rem; }
.pst-resin dd { margin: 0; }
.js .pst-resin[hidden] { display: none; }

/* shapes page: the families of tara as a stepped shelf, and the calculator */
.pst-shelf { list-style: none; margin: 30px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; align-items: end; }
.pst-shelf li { padding: 24px 22px; border-radius: var(--pst-radius) var(--pst-radius) 8px 8px; background: linear-gradient(180deg, var(--pst-panel-2), var(--pst-panel)); }
.pst-shelf li:nth-child(odd) { padding-top: 42px; }
.pst-shelf li:nth-child(3n) { padding-top: 60px; }
.pst-shelf h3 { margin-bottom: 8px; }
.pst-shelf p { font-size: 0.98rem; color: var(--pst-ink-2); margin: 0; }

.pst-overlap--shapes { grid-template-columns: 1.35fr 1fr; margin-bottom: 70px; }

.pst-tool { margin: 30px 0 20px; padding: 34px; border-radius: 26px; background: var(--pst-panel); box-shadow: inset 0 0 0 1px var(--pst-edge); }
.pst-tool__grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 34px; }
.pst-tool fieldset { border: 0; margin: 0 0 22px; padding: 0; }
.pst-tool legend { padding: 0; margin-bottom: 12px; }
.pst-field { display: grid; gap: 6px; margin-bottom: 14px; }
.pst-field label { font-size: 0.92rem; font-weight: 520; color: var(--pst-ink); }
.pst-field small { color: var(--pst-ink-3); font-size: 0.84rem; }
.pst-input, .pst-select, .pst-area {
  width: 100%; min-height: 50px; padding: 12px 14px; border-radius: 12px; border: 0;
  font: inherit; font-size: 1rem; color: var(--pst-ink); background: var(--pst-ground-2);
  box-shadow: inset 0 0 0 1px rgba(220, 232, 226, 0.2);
  transition: box-shadow .2s var(--pst-ease), background-color .2s;
}
.pst-area { min-height: 130px; resize: vertical; line-height: 1.5; }
.pst-input:hover, .pst-select:hover, .pst-area:hover { box-shadow: inset 0 0 0 1px rgba(220, 232, 226, 0.38); }
.pst-input:focus, .pst-select:focus, .pst-area:focus { outline: none; background: #122226; box-shadow: inset 0 0 0 2px var(--pst-cool); }
.pst-input[aria-invalid="true"], .pst-select[aria-invalid="true"], .pst-area[aria-invalid="true"] { box-shadow: inset 0 0 0 2px #e8735a; }
.pst-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.pst-out { padding: 26px; border-radius: 20px; background: var(--pst-ground-2); }
.pst-out__num { font-size: clamp(2.3rem, 4vw, 3.2rem); font-weight: 760; line-height: 1; font-variation-settings: var(--pst-sharp); color: var(--pst-melt-2); margin: 6px 0 4px; letter-spacing: -0.02em; }
.pst-out__rows { display: grid; gap: 10px; margin: 20px 0 0; }
.pst-out__rows div { display: flex; justify-content: space-between; gap: 16px; padding: 12px 14px; border-radius: 12px; background: var(--pst-panel); }
.pst-out__rows dt { color: var(--pst-ink-2); }
.pst-out__rows dd { margin: 0; font-weight: 620; color: var(--pst-ink); text-align: right; }
.pst-out__fill { position: relative; height: 150px; margin: 22px 0 0; border-radius: 10px 10px 34px 34px; background: var(--pst-panel); overflow: clip; clip-path: polygon(0 0, 100% 0, 88% 100%, 12% 100%); }
.pst-out__level { position: absolute; left: 0; right: 0; bottom: 0; height: 100%; transform: scaleY(0); background: linear-gradient(180deg, var(--pst-cool) 0%, #3f9f95 100%); transition: transform .6s var(--pst-ease); transform-origin: bottom; }
.pst-out__level--brim { transform: none; background: rgba(103, 207, 194, 0.12); }

/* brief form */
.pst-form { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 46px; align-items: start; margin: 20px 0 40px; }
.pst-form__body { padding: 34px; border-radius: 26px; background: var(--pst-panel); }
.pst-form fieldset { border: 0; margin: 0 0 26px; padding: 0; }
.pst-form legend { padding: 0; margin: 0 0 14px; }
.pst-pick { display: flex; flex-wrap: wrap; gap: 8px; }
.pst-pick label {
  display: inline-flex; align-items: center; gap: 10px; max-width: 100%; min-height: 46px; padding: 0 16px 0 12px;
  border-radius: 12px; cursor: pointer; font-size: 0.97rem; background: var(--pst-ground-2);
  box-shadow: inset 0 0 0 1px rgba(220, 232, 226, 0.2);
  transition: background-color .2s var(--pst-ease), box-shadow .2s var(--pst-ease);
}
.pst-pick label:hover { box-shadow: inset 0 0 0 1px rgba(220, 232, 226, 0.42); }
.pst-pick label:has(input:checked) { background: rgba(243, 154, 61, 0.16); box-shadow: inset 0 0 0 2px var(--pst-melt); }
.pst-pick input {
  -webkit-appearance: none; appearance: none; flex: none; display: grid; place-items: center; margin: 0;
  width: 18px; height: 18px; border-radius: 50%; background: var(--pst-panel-2);
  box-shadow: inset 0 0 0 2px rgba(220, 232, 226, 0.45); transition: background-color .2s, box-shadow .2s;
}
.pst-pick input[type="checkbox"] { border-radius: 5px; }
.pst-pick input:checked { background: var(--pst-melt); box-shadow: inset 0 0 0 2px var(--pst-melt); }
.pst-pick input[type="radio"]:checked::after { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--pst-melt-ink); }
.pst-pick input[type="checkbox"]:checked::after {
  content: ""; width: 9px; height: 5px; margin-top: -2px; border-left: 2px solid var(--pst-melt-ink);
  border-bottom: 2px solid var(--pst-melt-ink); transform: rotate(-45deg);
}
.pst-pick input:focus-visible { outline: 3px solid var(--pst-melt); outline-offset: 3px; }
.pst-pick .pst-pick__long { min-width: 0; line-height: 1.45; padding: 11px 0; }
.pst-form__side { position: sticky; top: 110px; }
.pst-inset { margin: 0 0 22px; padding: 18px; border-radius: 22px; background: var(--pst-ground-2); }
.pst-inset img { width: 100%; aspect-ratio: 1; object-fit: cover; border-radius: 14px; }
.pst-inset figcaption { margin-top: 12px; font-size: 0.85rem; color: var(--pst-ink-3); }
.pst-status { margin-top: 18px; padding: 18px 20px; border-radius: 16px; background: var(--pst-ground-2); }
.pst-status[hidden] { display: none; }
.pst-status--ok { box-shadow: inset 0 0 0 2px var(--pst-cool); }
.pst-status--err { box-shadow: inset 0 0 0 2px #e8735a; }
.pst-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; opacity: 0; pointer-events: none; }

/* company page */
.pst-company { display: grid; grid-template-columns: 320px 1fr; gap: 56px; align-items: start; margin: 20px 0 50px; }
.pst-company__mark { position: sticky; top: 120px; padding: 40px; border-radius: 30px; background: radial-gradient(circle at 50% 40%, var(--pst-panel-2), var(--pst-ground-2) 75%); }
.pst-company__mark img { width: 100%; height: auto; }
.pst-company__mark p { text-align: center; margin: 18px auto 0; font-size: 0.85rem; color: var(--pst-ink-3); }
.pst-regd { display: grid; gap: 10px; margin: 18px 0 0; }
.pst-regd div { display: grid; grid-template-columns: 230px 1fr; gap: 20px; padding: 16px 20px; border-radius: 14px; background: var(--pst-panel); }
.pst-regd dt { color: var(--pst-ink-3); font-size: 0.93rem; }
.pst-regd dd { margin: 0; color: var(--pst-ink); overflow-wrap: anywhere; }

/* ---------- footer ---------- */
.pst-foot { margin-top: 70px; padding: 54px 0 46px; background: #091012; }
.pst-foot__in { max-width: var(--pst-wide); margin: 0 auto; padding: 0 24px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; }
.pst-foot__legal { font-size: 0.93rem; line-height: 1.7; color: var(--pst-ink-2); }
.pst-foot__legal strong { color: var(--pst-ink); font-weight: 620; }
.pst-foot__links { display: flex; flex-wrap: wrap; gap: 8px; align-content: start; justify-content: flex-end; }
.pst-foot__links a {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 15px; border-radius: 12px; text-decoration: none;
  color: var(--pst-ink); background: rgba(220, 232, 226, 0.05); font-size: 0.93rem; transition: background-color .25s;
}
.pst-foot__links a:hover { background: rgba(220, 232, 226, 0.12); color: var(--pst-ink); }

/* ---------- motion: load choreography, the haze, the cooling light, the dial drawing in ---------- */
@keyframes pst-rise { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes pst-haze { 0% { transform: translate3d(-8%, 4%, 0) scale(0.92); opacity: .35; } 50% { transform: translate3d(6%, -6%, 0) scale(1.06); opacity: .7; } 100% { transform: translate3d(-8%, 4%, 0) scale(0.92); opacity: .35; } }
@keyframes pst-draw { from { stroke-dashoffset: var(--len, 200); } to { stroke-dashoffset: 0; } }
@keyframes pst-seg { from { transform: scaleX(0.04); opacity: .2; } to { transform: none; opacity: 1; } }
@keyframes pst-cooling { from { opacity: 1; } to { opacity: 0.22; } }
@keyframes pst-warming { from { opacity: 0.3; } to { opacity: 1; } }
@keyframes pst-settle { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
  .pst-hero .pst-label, .pst-hero h1 span, .pst-hero .pst-lead, .pst-hero .pst-actions, .pst-pagehead > * {
    animation: pst-rise .9s var(--pst-ease) both;
  }
  .pst-hero h1 span:nth-child(1) { animation-delay: .08s; }
  .pst-hero h1 span:nth-child(2) { animation-delay: .18s; }
  .pst-hero h1 span:nth-child(3) { animation-delay: .28s; }
  .pst-hero .pst-lead { animation-delay: .42s; }
  .pst-hero .pst-actions { animation-delay: .56s; }
  .pst-pagehead > :nth-child(2) { animation-delay: .12s; }
  .pst-pagehead > :nth-child(3) { animation-delay: .24s; }
  .pst-hero__haze { animation: pst-haze 9s ease-in-out infinite; }
  .pst-dial__arc { stroke-dasharray: var(--len, 200); animation: pst-draw 1.4s var(--pst-ease) both; }
  .pst-dial a:nth-of-type(2) .pst-dial__arc { animation-delay: .12s; }
  .pst-dial a:nth-of-type(3) .pst-dial__arc { animation-delay: .24s; }
  .pst-dial a:nth-of-type(4) .pst-dial__arc { animation-delay: .36s; }
  .pst-dial a:nth-of-type(5) .pst-dial__arc { animation-delay: .48s; }
  .pst-dial a:nth-of-type(6) .pst-dial__arc { animation-delay: .6s; }
  .pst-shape:not(.is-run) .pst-shape__seg { transform: scaleX(0.04); opacity: .2; }
  .pst-shape.is-run .pst-shape__seg { animation: pst-seg .7s var(--pst-ease) both; }
  .pst-shape.is-run .pst-shape__seg:nth-child(2) { animation-delay: .25s; }
  .pst-shape.is-run .pst-shape__seg:nth-child(3) { animation-delay: .5s; }
  .pst-shape.is-run .pst-shape__seg:nth-child(4) { animation-delay: .75s; animation-duration: 1.6s; }
  .pst-shape.is-run .pst-shape__seg:nth-child(5) { animation-delay: 2.2s; }
  .pst-shape.is-run .pst-shape__seg:nth-child(6) { animation-delay: 2.45s; }
  .pst-band__pic img, .pst-split__pic img { transform: scale(1.06); }
  @supports (animation-timeline: scroll()) {
    .pst-glow--heat { animation: pst-cooling linear both; animation-timeline: scroll(root block); }
    .pst-glow--cool { animation: pst-warming linear both; animation-timeline: scroll(root block); }
    .pst-band__pic img, .pst-split__pic img {
      animation: pst-drift linear both; animation-timeline: view(); animation-range: entry 0% exit 100%;
    }
    .pst-tile, .pst-shelf li, .pst-resin, .pst-regd div {
      animation: pst-settle linear both; animation-timeline: view(); animation-range: entry 5% cover 28%;
    }
  }
}
@keyframes pst-drift { from { transform: scale(1.06) translate3d(0, -3%, 0); } to { transform: scale(1.06) translate3d(0, 3%, 0); } }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: .01ms !important; animation: none !important; }
  .pst-shape__seg { transform: none !important; opacity: 1 !important; }
}

/* ---------- smaller screens ---------- */
@media (max-width: 1240px) {
  .pst-shape__seg { font-size: 0.7rem; padding-left: 7px; letter-spacing: 0; }
}
@media (max-width: 1080px) {
  .pst-cycle { grid-template-columns: 1fr; }
  .pst-dial { order: -1; }
  .pst-dial__sticky { position: static; display: grid; grid-template-columns: 200px 1fr; gap: 24px; align-items: center; padding-top: 30px; }
  .pst-dial__list { margin-top: 0; }
  .pst-dial__list li a { margin-left: 0 !important; }
}
@media (max-width: 900px) {
  .pst-mast__in { grid-template-columns: 1fr auto; padding: 10px 16px; }
  .pst-tabs { grid-column: 1 / -1; grid-row: 2; justify-self: stretch; overflow-x: auto; scrollbar-width: none; scroll-snap-type: x proximity; }
  .pst-tabs::-webkit-scrollbar { display: none; }
  .pst-tabs__track { width: max-content; }
  .pst-tabs a { scroll-snap-align: start; padding: 0 14px; }
  .pst-brief, .pst-reg, .pst-split, .pst-form, .pst-company, .pst-tool__grid, .pst-foot__in { grid-template-columns: 1fr; }
  .pst-form__side, .pst-company__mark { position: static; }
  .pst-company__mark { max-width: 320px; }
  .pst-split__pic { min-height: 380px; }
  .pst-split__pic::after { background: linear-gradient(180deg, rgba(12, 21, 23, 0) 18%, rgba(12, 21, 23, 0.88) 56%, rgba(12, 21, 23, 0.97) 100%); }
  .pst-split__copy { padding: 36px 26px; }
  .pst-reg { padding: 28px; }
  .pst-reg__mark { width: 140px; }
  .pst-overlap, .pst-overlap--shapes { grid-template-columns: 1fr; }
  .pst-overlap__card { grid-column: 1; grid-row: 2; margin: -60px 16px 0; }
  .pst-overlap figcaption { top: 16px; bottom: auto; left: 16px; }
  .pst-overlap figure::after { background: linear-gradient(180deg, rgba(8, 14, 16, 0.85) 0%, rgba(8, 14, 16, 0) 34%); }
  .pst-regd div, .pst-resin dl { grid-template-columns: 1fr; gap: 4px; }
  .pst-foot__links { justify-content: flex-start; }
}
@media (max-width: 620px) {
  body { font-size: 1.05rem; }
  .pst-mast { position: relative; }
  .pst-tabs { overflow: visible; }
  .pst-tabs__track { width: 100%; flex-wrap: wrap; }
  .pst-tabs a { flex: 1 1 auto; padding: 0 12px; }
  .pst-tabs__shot { display: none; }
  .pst-phase { padding: 44px 0; }
  .pst-section { padding: 40px 0; }
  .pst-pagehead { padding: 48px 0 20px; }
  .pst-hero { min-height: 0; align-items: end; }
  .pst-hero__pic img { object-position: 78% 40%; }
  .pst-hero::before {
    background: linear-gradient(0deg, var(--pst-ground) 0%, rgba(12, 21, 23, 0.95) 58%, rgba(12, 21, 23, 0.84) 70%, rgba(12, 21, 23, 0.35) 88%, rgba(12, 21, 23, 0.1) 100%);
  }
  .pst-hero__in { padding: 300px 18px 60px; }
  .pst-wrap, .pst-band__in { padding-left: 18px; padding-right: 18px; }
  .pst-dial__sticky { grid-template-columns: 1fr; }
  .pst-dial svg { max-width: 220px; margin: 0 auto; }
  .pst-feather { margin-right: 0; }
  .pst-feather__over { position: static; max-width: none; margin: 4px 0 0; }
  .pst-band { min-height: 540px; align-items: end; }
  .pst-band::before { background: linear-gradient(0deg, rgba(12, 21, 23, 0.55) 0%, rgba(12, 21, 23, 0.92) 22%, rgba(12, 21, 23, 0.9) 52%, rgba(12, 21, 23, 0.2) 80%, rgba(12, 21, 23, 0) 100%); }
  .pst-band__pic img { object-position: 82% 30%; }
  .pst-row { grid-template-columns: 1fr; }
  .pst-tool, .pst-form__body { padding: 22px 18px; }
  .pst-shape { padding: 18px; }
  .pst-shape__seg { font-size: 0; padding: 0; }
  .pst-brand__word { height: 21px; }
  .pst-brand__mark { width: 38px; height: 38px; }
}