.page-products{
  --cat-accent-line: rgba(34, 227, 210, 0.42);
  --cat-tile-gap: 1px;
  background: var(--c-obsidian);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.8;
  overflow-x: clip;
}

.page-products .cat-wrap{
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-products h1,
.page-products h2,
.page-products h3,
.page-products h4{
  font-family: var(--font-display);
  color: var(--c-paper);
  letter-spacing: -0.02em;
  line-height: 1.18;
  margin: 0;
  font-weight: 800;
}

.page-products p{ margin: 0; }

.page-products a{ color: var(--c-cyan-soft); text-decoration: none; }
.page-products a:hover{ color: var(--c-cyan); }

.page-products .mono{ font-family: var(--font-mono); }

/* ---------- hero ---------- */
.page-products .cat-hero{
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  padding-block: clamp(24px, 5vw, 52px) clamp(38px, 7vw, 82px);
}

.page-products .cat-hero__glow{
  position: absolute;
  top: -34%;
  right: -20%;
  width: min(720px, 92vw);
  aspect-ratio: 1;
  background: radial-gradient(circle at 50% 50%, rgba(34, 227, 210, 0.17), rgba(139, 92, 246, 0.11) 46%, rgba(11, 13, 18, 0) 72%);
  pointer-events: none;
}

.page-products .cat-hero__shard{
  position: absolute;
  inset: 0 0 0 auto;
  width: min(580px, 64%);
  height: 100%;
  background: linear-gradient(155deg, rgba(34, 227, 210, 0.13), rgba(11, 13, 18, 0) 68%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-products .cat-hero__inner{ position: relative; z-index: 1; }

.page-products .breadcrumb{
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-text-dim);
  margin-bottom: clamp(22px, 4vw, 40px);
}
.page-products .breadcrumb a{ color: var(--c-text-dim); }
.page-products .breadcrumb a:hover{ color: var(--c-cyan); }
.page-products .breadcrumb__sep{ color: var(--c-cyan); opacity: 0.7; }

.page-products .cat-eyebrow{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--c-cyan);
  margin-bottom: 14px;
}

.page-products h1{
  font-size: clamp(29px, 6vw, 56px);
  max-width: 20em;
  text-wrap: balance;
}

.page-products .cat-lede{
  margin-top: 18px;
  max-width: 62ch;
  color: var(--c-text);
}

.page-products .cat-tabs{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(22px, 4vw, 34px);
}

.page-products .cat-tabs a{
  display: inline-block;
  padding: 7px 13px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-text-dim);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}
.page-products .cat-tabs a:hover,
.page-products .cat-tabs a:focus-visible{
  color: var(--c-cyan);
  border-color: var(--line);
  background: rgba(34, 227, 210, 0.06);
}
.page-products .cat-tabs a.is-active{
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  color: var(--c-obsidian);
  font-weight: 700;
}

/* ---------- section shell ---------- */
.page-products .cat-section{
  padding-block: clamp(36px, 6vw, 78px);
  border-bottom: 1px solid var(--line-soft);
}
.page-products .cat-section--panel{ background: var(--c-ink); }

.page-products .cat-head{
  display: grid;
  gap: 10px;
  margin-bottom: clamp(22px, 3.4vw, 38px);
  max-width: 74ch;
}
.page-products .cat-head__no{
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--c-cyan);
}
.page-products .cat-head h2{
  font-size: clamp(22px, 3.6vw, 34px);
  text-wrap: balance;
}
.page-products .cat-head__sub{
  color: var(--c-text-dim);
  max-width: 62ch;
}

/* ---------- figures ---------- */
.page-products .cat-figure{
  margin: 0 0 clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--c-violet-night);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}
.page-products .cat-figure img{
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-products .cat-figure--tall img{ aspect-ratio: 3 / 4; }
.page-products .cat-figure__cap{
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-text-dim);
  border-top: 1px solid var(--line-soft);
}

/* ---------- three lines ---------- */
.page-products .cat-lines{
  display: grid;
  gap: 16px;
}

.page-products .cat-line{
  position: relative;
  padding: 24px 22px 22px;
  background: var(--c-ink);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.page-products .cat-line::before{
  content: "";
  position: absolute;
  left: 22px;
  top: -1px;
  width: 46px;
  height: 2px;
  background: var(--c-cyan);
}
.page-products .cat-line:nth-child(2)::before{ background: var(--c-violet); }
.page-products .cat-line:nth-child(3)::before{ background: var(--c-gold); }
.page-products .cat-line:hover{
  transform: translateY(-2px);
  border-color: var(--line);
}

.page-products .cat-line__no{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--c-text-dim);
  margin-bottom: 10px;
}
.page-products .cat-line h3{
  font-size: 19px;
  margin-bottom: 10px;
}
.page-products .cat-line__text{ color: var(--c-text); }
.page-products .cat-line__list{
  list-style: none;
  margin: 16px 0 18px;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-products .cat-line__list li{
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: var(--c-text-dim);
}
.page-products .cat-line__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background: var(--c-cyan);
  transform: rotate(45deg);
}
.page-products .cat-line__go{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
  border-bottom: 1px solid var(--cat-accent-line);
  padding-bottom: 2px;
}

/* ---------- tier strip ---------- */
.page-products .cat-tiers{
  display: flex;
  gap: 12px;
  overflow-x: auto;
  padding: 4px 2px 16px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.page-products .cat-tiers:focus-visible{ outline: 1px solid var(--c-cyan); outline-offset: 4px; }

.page-products .cat-tier{
  flex: 0 0 min(300px, 84%);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 22px 20px;
  background: linear-gradient(180deg, var(--c-violet-night), var(--c-ink) 72%);
  border: 1px solid var(--line-soft);
  border-top: 2px solid var(--c-cyan-soft);
  border-radius: var(--radius);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.page-products .cat-tier:nth-child(2){ border-top-color: var(--c-cyan); }
.page-products .cat-tier--violet{ border-top-color: var(--c-violet); border-color: rgba(139, 92, 246, 0.3); }
.page-products .cat-tier--gold{ border-top-color: var(--c-gold); box-shadow: inset 0 0 0 1px rgba(233, 180, 92, 0.22), var(--shadow-soft); }
.page-products .cat-tier:hover{
  transform: translateY(-2px);
  border-color: var(--line);
}

.page-products .cat-tier__code{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--c-text-dim);
}
.page-products .cat-tier__name{
  font-size: 24px;
  letter-spacing: -0.03em;
}
.page-products .cat-tier--gold .cat-tier__name{ color: var(--c-gold); }
.page-products .cat-tier--violet .cat-tier__name{ color: var(--c-cyan-soft); }

.page-products .cat-tier__tags{
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-products .cat-tier dl{
  margin: 0;
  display: grid;
  gap: 12px;
}
.page-products .cat-tier dt{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--c-cyan-soft);
}
.page-products .cat-tier dd{
  margin: 4px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-text);
}
.page-products .cat-tier__fit{
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 13.5px;
  color: var(--c-text-dim);
}

/* ---------- note ---------- */
.page-products .cat-note{
  margin-top: clamp(20px, 3vw, 32px);
  padding-left: 16px;
  border-left: 2px solid var(--c-cyan);
  max-width: 70ch;
  font-size: 14.5px;
  color: var(--c-text-dim);
}

/* ---------- library five grid ---------- */
.page-products .cat-lib-grid{
  display: grid;
  gap: var(--cat-tile-gap);
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-products .cat-lib{
  position: relative;
  background: var(--c-obsidian);
  padding: 20px 18px 22px;
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}
.page-products .cat-lib:hover,
.page-products .cat-lib:focus-within{
  background: var(--c-ink);
  box-shadow: inset 0 0 0 1px var(--line);
}

.page-products .cat-lib__no{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--c-violet);
  margin-bottom: 10px;
}
.page-products .cat-lib__no::before{
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  vertical-align: 0.12em;
  background: var(--c-violet);
  border-radius: 50%;
}
.page-products .cat-lib h3{
  font-size: 18px;
  margin-bottom: 10px;
}
.page-products .cat-lib p{
  font-size: 14px;
  color: var(--c-text);
}
.page-products .cat-lib__path{
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--c-cyan-soft);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.3s var(--ease), opacity 0.3s var(--ease), margin-top 0.3s var(--ease);
}
.page-products .cat-lib:hover .cat-lib__path,
.page-products .cat-lib:focus-within .cat-lib__path{
  max-height: 44px;
  opacity: 1;
  margin-top: 10px;
}

/* ---------- phone ---------- */
.page-products .cat-phone{
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}
.page-products .cat-phone .cat-figure{ margin-bottom: 0; }

.page-products .cat-phone__body{
  display: grid;
  gap: 14px;
  color: var(--c-text);
}

.page-products .cat-check{
  list-style: none;
  margin: 6px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-products .cat-check li{
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  color: var(--c-text-dim);
}
.page-products .cat-check li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 10px;
  height: 2px;
  background: var(--c-cyan);
}

.page-products .cat-sub{
  font-size: clamp(18px, 2.6vw, 24px);
  margin: clamp(32px, 5vw, 56px) 0 clamp(18px, 3vw, 26px);
  padding-left: 14px;
  border-left: 3px solid var(--c-gold);
}

.page-products .cat-steps{
  display: flex;
  gap: 14px;
  overflow-x: auto;
  padding: 2px 2px 16px;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}
.page-products .cat-steps:focus-visible{ outline: 1px solid var(--c-cyan); outline-offset: 4px; }

.page-products .cat-step{
  flex: 0 0 min(280px, 84%);
  scroll-snap-align: start;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px 18px;
  background: var(--c-ink);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--c-gold);
  border-radius: var(--radius);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}
.page-products .cat-step:hover{
  transform: translateY(-2px);
  border-color: var(--line);
}
.page-products .cat-step__no{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--c-gold);
}
.page-products .cat-step h4{
  font-size: 17px;
}
.page-products .cat-step p{
  font-size: 14px;
  color: var(--c-text);
}
.page-products .cat-step__path{
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-cyan-soft);
}

/* ---------- paper section ---------- */
.page-products .cat-section--paper{
  background: var(--c-paper);
  color: var(--c-paper-ink);
  border-bottom-color: rgba(26, 23, 18, 0.16);
}
.page-products .cat-section--paper h2,
.page-products .cat-section--paper h3{
  color: var(--c-paper-ink);
}
.page-products .cat-section--paper .cat-head__no{
  color: #0f6f68;
}
.page-products .cat-section--paper .cat-head__sub{
  color: rgba(26, 23, 18, 0.74);
}
.page-products .cat-section--paper .cat-figure{
  background: #e3d8c5;
  border-color: rgba(26, 23, 18, 0.18);
  box-shadow: none;
}
.page-products .cat-section--paper .cat-figure__cap{
  color: rgba(26, 23, 18, 0.62);
  border-top-color: rgba(26, 23, 18, 0.16);
}

.page-products .cat-lang{
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-products .cat-pairs{
  display: grid;
  border-top: 1px solid rgba(26, 23, 18, 0.18);
}
.page-products .cat-pair{
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 18px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(26, 23, 18, 0.18);
}
.page-products .cat-pair__k{
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--c-paper-ink);
}
.page-products .cat-pair__v{
  font-family: var(--font-latin);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #0f6f68;
}

.page-products .cat-note--paper{
  border-left-color: #0f6f68;
  color: rgba(26, 23, 18, 0.76);
}
.page-products .cat-note--paper a{
  color: #0f6f68;
  border-bottom: 1px solid rgba(15, 111, 104, 0.4);
}
.page-products .cat-note--paper a:hover{ color: #0b534e; }

/* ---------- cases ---------- */
.page-products .cat-cases{
  display: grid;
  gap: 10px;
}
.page-products .cat-case{
  background: var(--c-ink);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: border-color 0.25s var(--ease);
}
.page-products .cat-case:hover{ border-color: var(--line); }

.page-products .cat-case summary{
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 16px 20px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--c-paper);
}
.page-products .cat-case summary::-webkit-details-marker{ display: none; }
.page-products .cat-case summary::after{
  content: "+";
  font-family: var(--font-mono);
  font-weight: 400;
  color: var(--c-cyan);
  flex: none;
}
.page-products .cat-case[open] summary::after{ content: "−"; }
.page-products .cat-case[open] summary{ border-bottom: 1px solid var(--line-soft); }

.page-products .cat-case__body{
  padding: 16px 20px 20px;
  display: grid;
  gap: 12px;
}
.page-products .cat-case__body p{
  font-size: 14.5px;
  color: var(--c-text);
}
.page-products .cat-case__list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-products .cat-case__list li{
  font-size: 13.5px;
  color: var(--c-text-dim);
  padding-left: 14px;
  position: relative;
}
.page-products .cat-case__list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 6px;
  height: 1px;
  background: var(--c-cyan);
}

/* ---------- cta ---------- */
.page-products .cat-cta__grid{
  display: grid;
  gap: 14px;
}
.page-products .cat-cta__card{
  display: grid;
  gap: 8px;
  padding: 22px 20px;
  background: rgba(36, 28, 51, 0.62);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  color: var(--c-text);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}
.page-products .cat-cta__card:hover{
  transform: translateY(-2px);
  border-color: var(--c-cyan);
  background: rgba(36, 28, 51, 0.9);
  color: var(--c-text);
}
.page-products .cat-cta__no{
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--c-violet);
}
.page-products .cat-cta__card h3{ font-size: 18px; }
.page-products .cat-cta__card p{
  font-size: 14px;
  color: var(--c-text-dim);
}
.page-products .cat-cta__go{
  margin-top: 4px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--c-cyan);
}
.page-products .cat-cta__foot{
  margin-top: clamp(18px, 3vw, 28px);
  font-size: 14px;
  color: var(--c-text-dim);
}

/* ---------- responsive ---------- */
@media (min-width: 680px){
  .page-products .cat-lib-grid{ grid-template-columns: repeat(2, 1fr); }
  .page-products .cat-cta__grid{ grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px){
  .page-products .cat-lines{
    grid-template-columns: 1.05fr 0.92fr 1.2fr;
    align-items: start;
  }
  .page-products .cat-line:nth-child(2){ margin-top: 26px; }
  .page-products .cat-line:nth-child(3){ margin-top: 12px; }

  .page-products .cat-tiers{ overflow: visible; }
  .page-products .cat-tier{ flex: 1 1 0; min-width: 0; }

  .page-products .cat-lib-grid{ grid-template-columns: repeat(6, 1fr); }
  .page-products .cat-lib{ grid-column: span 2; }
  .page-products .cat-lib:nth-child(4),
  .page-products .cat-lib:nth-child(5){ grid-column: span 3; }

  .page-products .cat-phone{ grid-template-columns: 0.82fr 1.18fr; }
  .page-products .cat-steps{ overflow: visible; }
  .page-products .cat-step{ flex: 1 1 0; min-width: 0; }

  .page-products .cat-lang{ grid-template-columns: 1fr 1.1fr; }
  .page-products .cat-cta__grid{ grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1100px){
  .page-products .cat-phone{ grid-template-columns: 0.78fr 1.22fr; gap: 48px; }
  .page-products .cat-tier{ padding: 26px 22px; }
}

@media (hover: none){
  .page-products .cat-lib__path{
    max-height: 44px;
    opacity: 1;
    margin-top: 10px;
  }
  .page-products .cat-line:hover,
  .page-products .cat-tier:hover,
  .page-products .cat-step:hover,
  .page-products .cat-cta__card:hover{ transform: none; }
}

@media (prefers-reduced-motion: reduce){
  .page-products *{
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .page-products .cat-line:hover,
  .page-products .cat-tier:hover,
  .page-products .cat-step:hover,
  .page-products .cat-cta__card:hover{ transform: none; }
}
<<<END>>>