:root {
  --paper: #f1f3f6;
  --panel: #ffffff;
  --ink: #14181d;
  --ink-2: #454f5b;
  --steel: #78838f;
  --line: #d8dde3;
  --line-2: #e8ecf0;
  --accent: #c2410c;
  --accent-ink: #9a3208;
  --teal: #16655f;
  --band: #1b2229;
  --radius: 8px;
  --shadow: 0 1px 2px rgba(20, 24, 29, .06), 0 8px 24px -14px rgba(20, 24, 29, .22);
  --sans: "Segoe UI", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, sans-serif;
  --mono: "SFMono-Regular", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }

.wrap { width: min(1240px, calc(100% - 40px)); margin: 0 auto; }

/* ---------- header ---------- */
.site-head {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.head-row {
  display: flex;
  align-items: center;
  gap: 22px;
  min-height: 66px;
}

.brand { display: flex; align-items: center; gap: 11px; flex: 0 0 auto; }

.brand-mark {
  width: 34px;
  height: 34px;
  border-radius: 7px;
  background: var(--band);
  display: grid;
  place-items: center;
  flex: 0 0 auto;
}

.brand-mark svg { width: 21px; height: 21px; }

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }

.brand-name { font-weight: 700; font-size: 15px; letter-spacing: .01em; }

.brand-sub { font-size: 11px; color: var(--steel); letter-spacing: .06em; text-transform: uppercase; }

.nav { display: flex; gap: 4px; margin-left: auto; }

.nav a {
  padding: 8px 13px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--ink-2);
  white-space: nowrap;
}

.nav a:hover { background: var(--line-2); color: var(--ink); }
.nav a[aria-current="page"] { background: var(--band); color: #fff; }

.lang {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 7px;
  overflow: hidden;
  flex: 0 0 auto;
}

.lang button {
  border: 0;
  background: #fff;
  padding: 7px 12px;
  font-size: 13px;
  cursor: pointer;
  color: var(--ink-2);
}

.lang button + button { border-left: 1px solid var(--line); }
.lang button[aria-pressed="true"] { background: var(--band); color: #fff; }

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: var(--band);
  color: #fff;
  overflow: hidden;
  isolation: isolate;
}

.hero-collage {
  position: absolute;
  inset: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 10px;
  padding: 10px;
  opacity: .34;
  filter: grayscale(.35) contrast(1.05);
  z-index: -1;
}

.hero-collage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 4px;
  background: #fff;
}

.hero-inner { padding: 74px 0 66px; }

.hero-eyebrow {
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: #f0a07c;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.12;
  margin: 0 0 14px;
  letter-spacing: 0;
  max-width: 16ch;
}

.hero-lede { max-width: 56ch; color: #cfd6de; margin: 0 0 26px; }

.hero-search {
  display: flex;
  gap: 8px;
  max-width: 560px;
}

.hero-search input {
  flex: 1;
  min-width: 0;
  padding: 12px 14px;
  border-radius: 7px;
  border: 1px solid rgba(255, 255, 255, .22);
  background: rgba(255, 255, 255, .1);
  color: #fff;
}

.hero-search input::placeholder { color: #9aa6b2; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  border: 1px solid transparent;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover { background: var(--accent-ink); }

.btn.ghost { background: transparent; border-color: rgba(255, 255, 255, .3); color: #fff; }
.btn.ghost:hover { background: rgba(255, 255, 255, .1); }
.btn.quiet { background: #fff; border-color: var(--line); color: var(--ink); }
.btn.quiet:hover { background: var(--line-2); }

/* ---------- bands ---------- */
.band { padding: 46px 0; }
.band.tight { padding: 30px 0; }
.band.alt { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.band-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.band-head h2 {
  font-size: 22px;
  margin: 0;
  letter-spacing: 0;
}

.band-head p { margin: 4px 0 0; color: var(--ink-2); max-width: 62ch; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.stat { background: #fff; padding: 18px 20px; }

.stat b { display: block; font-size: 26px; line-height: 1.1; }

.stat span { font-size: 13px; color: var(--steel); }

/* ---------- category grid ---------- */
.cats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.cat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-height: 168px;
}

.cat:hover { border-color: var(--accent); }

.cat-code {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--teal);
  text-transform: uppercase;
}

.cat h3 { margin: 0; font-size: 16px; line-height: 1.35; }

.cat p { margin: 0; font-size: 13px; color: var(--ink-2); }

.cat .count { margin-top: auto; font-size: 12px; color: var(--steel); }

/* ---------- catalog ---------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  padding: 14px 0 18px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 22px;
}

.field {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 7px;
  padding: 0 12px;
  min-height: 40px;
  flex: 1 1 320px;
}

.field svg { width: 16px; height: 16px; color: var(--steel); flex: 0 0 auto; }

.field input { border: 0; outline: 0; background: transparent; width: 100%; padding: 10px 0; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }

.chip {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 999px;
  padding: 7px 13px;
  font-size: 13px;
  cursor: pointer;
  color: var(--ink-2);
  white-space: nowrap;
}

.chip:hover { border-color: var(--steel); color: var(--ink); }

.chip[aria-pressed="true"] { background: var(--band); border-color: var(--band); color: #fff; }

.select {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 7px;
  padding: 9px 11px;
  font-size: 13px;
}

.result-line { font-size: 13px; color: var(--steel); margin-bottom: 14px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(226px, 1fr));
  gap: 14px;
}

.card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.card:hover { border-color: var(--accent); box-shadow: var(--shadow); }

.card-media {
  height: 150px;
  background: #fbfbfc;
  border-bottom: 1px solid var(--line-2);
  display: grid;
  place-items: center;
  padding: 8px;
}

.card-media img { max-height: 134px; width: auto; max-width: 100%; object-fit: contain; }

.card-media.scan img { max-height: 134px; }

.card-body { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 5px; }

.card h3 { margin: 0; font-size: 15px; line-height: 1.35; }

.card .std { font-family: var(--mono); font-size: 12px; color: var(--accent-ink); margin: 0; word-break: break-word; }

.card .en { font-size: 12px; color: var(--steel); margin: 0; }

.tag {
  align-self: flex-start;
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--teal);
  border: 1px solid #c7ded9;
  background: #eef6f4;
  border-radius: 4px;
  padding: 2px 7px;
}

.pager { display: flex; align-items: center; gap: 8px; margin-top: 26px; flex-wrap: wrap; }

.pager button {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 13px;
}

.pager button[aria-current="true"] { background: var(--band); color: #fff; border-color: var(--band); }
.pager button:disabled { opacity: .4; cursor: default; }

.empty { padding: 40px 0; color: var(--steel); }

/* ---------- product ---------- */
.crumb { font-size: 13px; color: var(--steel); padding: 18px 0 0; }

.crumb a:hover { color: var(--accent); }

.product { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 34px; padding: 22px 0 46px; }

.p-media { display: flex; flex-direction: column; gap: 12px; }

.p-shot {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  display: grid;
  place-items: center;
  min-height: 300px;
}

.p-shot img { max-height: 420px; object-fit: contain; }

.p-thumbs { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }

.p-thumbs a {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 6px;
  display: grid;
  place-items: center;
  height: 104px;
}

.p-thumbs img { max-height: 90px; object-fit: contain; }

.p-thumbs a:hover { border-color: var(--accent); }

.p-title { font-size: 28px; margin: 0 0 6px; line-height: 1.22; }

.p-en { color: var(--steel); margin: 0 0 16px; font-size: 15px; }

.p-std {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--accent-ink);
  background: #fdf1ea;
  border: 1px solid #f2d6c8;
  border-radius: 6px;
  padding: 9px 12px;
  margin: 0 0 18px;
  word-break: break-word;
}

.spec { border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; }

.spec div { display: grid; grid-template-columns: 128px 1fr; gap: 14px; padding: 11px 16px; }

.spec div + div { border-top: 1px solid var(--line-2); }

.spec dt { color: var(--steel); font-size: 13px; }

.spec dd { margin: 0; word-break: break-word; }

.p-actions { display: flex; gap: 8px; flex-wrap: wrap; margin: 18px 0 0; }

.note { font-size: 12px; color: var(--steel); margin-top: 14px; }

.related { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 14px; }

.related a {
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  padding: 10px 12px;
  font-size: 13px;
  line-height: 1.4;
}

.related a:hover { border-color: var(--accent); }

.related span { display: block; font-family: var(--mono); font-size: 11px; color: var(--steel); }

/* ---------- prose pages ---------- */
.prose { max-width: 78ch; }

.prose h2 { font-size: 20px; margin: 26px 0 8px; }

.prose p { margin: 0 0 14px; color: var(--ink-2); }

.split { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); gap: 34px; align-items: start; }

.panel { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }

.panel h3 { margin: 0 0 12px; font-size: 17px; }

.form { display: grid; gap: 12px; }

.form label { font-size: 13px; color: var(--steel); display: block; margin-bottom: 5px; }

.form input, .form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  background: #fff;
}

.form textarea { min-height: 110px; resize: vertical; }

.contact-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }

.contact-list li { display: grid; grid-template-columns: 96px 1fr; gap: 12px; font-size: 14px; }

.contact-list b { color: var(--steel); font-weight: 500; font-size: 13px; }

.contact-list a { color: var(--ink); border-bottom: 1px solid var(--line); }

.contact-list a:hover { color: var(--accent-ink); border-bottom-color: var(--accent); }

/* ---------- footer ---------- */
.site-foot {
  background: var(--band);
  color: #b9c3cd;
  padding: 34px 0 28px;
  margin-top: 40px;
  font-size: 13px;
}

.foot-row { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; }

.site-foot a:hover { color: #fff; }

.foot-links { display: flex; gap: 16px; flex-wrap: wrap; }

.foot-contact { margin-top: 12px; color: #cfd6de; }

.foot-contact a { color: #cfd6de; }

.foot-contact a:hover { color: #fff; text-decoration: underline; }

/* ---------- responsive ---------- */
@media (max-width: 1040px) {
  .cats { grid-template-columns: repeat(2, 1fr); }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .product, .split { grid-template-columns: 1fr; }
  .related { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .head-row { flex-wrap: wrap; gap: 10px; padding: 10px 0; }
  .nav { margin-left: 0; order: 3; width: 100%; overflow-x: auto; }
  .lang { margin-left: auto; }
  .hero-inner { padding: 44px 0 40px; }
  .hero-collage { grid-template-columns: repeat(3, 1fr); }
  .cats { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .p-thumbs { grid-template-columns: repeat(2, 1fr); }
  .related { grid-template-columns: 1fr; }
  .spec div { grid-template-columns: 1fr; gap: 2px; }
}