/* Key Power — keypower.co */
@font-face {
  font-family: "Space Grotesk";
  src: url("fonts/space-grotesk-latin-wght-normal.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("fonts/inter-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}

:root {
  --ink: #0b1426;
  --ink-2: #16223a;
  --ink-3: #24324d;
  --text: #1d2639;
  --muted: #5a6478;
  --line: #e1e6ef;
  --line-2: #ccd5e3;
  --paper: #f7f9fc;
  --white: #ffffff;
  --mist: #eef2f8;
  --well: #edf1f7;
  --blue: #1a5cff;
  --blue-2: #0f47d9;
  --blue-soft: #e8efff;
  --blue-line: #c6d6ff;
  --blue-ink: #0b3bb3;
  --sky: #62a8ff;
  --on-ink: #aeb8cc;
  --radius: 14px;
  --radius-sm: 10px;
  --wrap: 1240px;
  --gutter: clamp(16px, 4vw, 40px);
  --display: "Space Grotesk", ui-sans-serif, system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --shadow: 0 1px 2px rgba(11, 20, 38, .04), 0 12px 28px -14px rgba(26, 92, 255, .22);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--text);
  font: 400 16px/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { font-family: var(--display); color: var(--ink); line-height: 1.12; margin: 0; letter-spacing: -0.02em; font-weight: 600; }
h1 { font-size: clamp(34px, 5vw, 60px); letter-spacing: -0.035em; }
h2 { font-size: clamp(26px, 3.2vw, 40px); letter-spacing: -0.03em; }
h3 { font-size: 18px; }
p { margin: 0; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -9999px; top: 8px; background: var(--ink); color: var(--white); padding: 8px 14px; border-radius: 8px; z-index: 100; }
.skip:focus { left: 8px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- buttons, pills ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 22px; border-radius: 999px; border: 1px solid transparent;
  font: 600 15px/1 var(--body); letter-spacing: -0.005em; cursor: pointer; white-space: nowrap;
  transition: background-color .18s, color .18s, border-color .18s, transform .18s;
}
.btn-sm { height: 40px; padding: 0 16px; font-size: 14px; }
.btn-primary { background: var(--blue); color: var(--white); }
.btn-primary:hover { background: var(--blue-2); }
.btn-ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn-ghost:hover, .btn-line:hover { border-color: var(--blue); color: var(--blue); }
.btn-line { background: var(--white); color: var(--ink); border-color: var(--line-2); }
.btn-amz { background: #ff9f1a; color: var(--ink); }
.btn-amz:hover { background: #f08a00; }
.btn:active { transform: translateY(1px); }
.link-arrow { font-weight: 600; font-size: 15px; color: var(--ink); border-bottom: 1.5px solid var(--blue); padding-bottom: 2px; }
.link-arrow:hover { color: var(--blue); }
.link-btn { background: none; border: 0; padding: 10px 0; margin: -10px 0; font-size: 14px; color: var(--muted); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.link-btn:hover { color: var(--ink); }

.pills { display: flex; flex-wrap: wrap; gap: 6px; }
.pill { display: inline-flex; align-items: center; height: 24px; padding: 0 9px; border-radius: 999px; background: var(--mist); border: 1px solid var(--line); font: 600 12px/1 var(--body); color: var(--ink-2); letter-spacing: 0; }
.pill-accent { background: var(--blue-soft); border-color: var(--blue-line); color: var(--blue-ink); }
.pill-amz { background: #fff1dc; border-color: #f3cf96; color: #6b4300; }

.eyebrow { display: inline-block; font: 600 12px/1.3 var(--body); text-transform: uppercase; letter-spacing: .12em; color: var(--muted); margin-bottom: 10px; }
.eyebrow-accent { color: var(--sky); }
.eyebrow-amz { color: #a35400; }
.ico-ext { width: 14px; height: 14px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.lede { font-size: clamp(17px, 1.6vw, 19px); color: var(--muted); max-width: 34em; }
.lede-sm { font-size: 17px; color: var(--muted); max-width: 44em; margin-top: 12px; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(247, 249, 252, .86); backdrop-filter: saturate(1.6) blur(14px); -webkit-backdrop-filter: saturate(1.6) blur(14px); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 24px; }
.logo { display: inline-flex; align-items: center; flex: none; padding: 12px 0; margin: -12px 0; }
.logo-svg { display: block; height: 20px; width: calc(20px * 325.8 / 30.8); }
.site-nav { display: flex; align-items: center; gap: 4px; }
.site-nav a:not(.btn) { padding: 8px 14px; border-radius: 999px; font-size: 15px; font-weight: 500; color: var(--text); }
.site-nav a:not(.btn):hover { background: var(--mist); }
.site-nav a[aria-current="page"] { color: var(--blue); background: var(--blue-soft); }
.site-nav .btn { margin-left: 10px; }
.nav-toggle { display: none; background: none; border: 0; width: 44px; height: 44px; padding: 12px 10px; cursor: pointer; flex-direction: column; justify-content: space-between; }
.nav-toggle span { display: block; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .2s, opacity .2s; }
.nav-toggle em { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------- hero ---------- */
.hero { padding: clamp(40px, 7vw, 96px) 0 clamp(48px, 7vw, 96px); overflow: hidden; background: radial-gradient(52% 60% at 82% 38%, rgba(26, 92, 255, .10), transparent 72%), radial-gradient(30% 40% at 4% 0%, rgba(98, 168, 255, .10), transparent 70%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.kicker { display: inline-flex; align-items: center; gap: 10px; font: 600 13px/1 var(--body); color: var(--ink-2); background: var(--white); border: 1px solid var(--line); padding: 9px 14px; border-radius: 999px; margin-bottom: 24px; }
.dot { width: 8px; height: 8px; border-radius: 50%; background: var(--blue); box-shadow: 0 0 0 4px rgba(26, 92, 255, .18); }
.hero h1 { max-width: 12em; }
.hero .lede { margin-top: 22px; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.hero-visual { position: relative; aspect-ratio: 1 / .92; }
.hv { position: absolute; display: block; background: var(--well); border-radius: 24px; overflow: hidden; }
.hv img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.hv:hover img { transform: scale(1.04); }
.hv-main { inset: 0 22% 14% 0; }
.hv-a { width: 42%; aspect-ratio: 1; right: 0; top: 6%; background: #e4eaf4; }
.hv-b { width: 36%; aspect-ratio: 1; right: 8%; bottom: 0; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }
.hv-tag { position: absolute; left: 16px; top: 16px; background: var(--blue); color: var(--white); font: 600 13px/1 var(--body); padding: 9px 12px; border-radius: 999px; }

/* ---------- stats ---------- */
.stats { background: var(--ink); color: var(--on-ink); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stats-grid > div { padding: 30px 24px 30px 0; border-right: 1px solid var(--ink-3); }
.stats-grid > div + div { padding-left: 24px; }
.stats-grid > div:last-child { border-right: 0; }
.stats b { display: block; font: 600 clamp(26px, 3vw, 36px)/1.1 var(--display); letter-spacing: -0.03em; background: linear-gradient(90deg, var(--sky), #8fd3ff); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stats span { display: block; margin-top: 6px; font-size: 14px; }

/* ---------- sections ---------- */
.section { padding: clamp(56px, 8vw, 104px) 0; }
.section-mist { background: var(--mist); }
.section-ink { background: var(--ink); color: var(--on-ink); }
.section-ink h2, .section-ink h3 { color: var(--white); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: clamp(28px, 4vw, 44px); flex-wrap: wrap; }

/* category cards */
.cat-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.cat-card { display: flex; flex-direction: column; gap: 14px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 10px 16px; transition: border-color .2s, box-shadow .2s, transform .2s; }
.cat-card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-2px); }
.cat-img { background: var(--well); border-radius: var(--radius-sm); aspect-ratio: 1; overflow: hidden; }
.cat-img img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.cat-body { padding: 0 6px; display: flex; flex-direction: column; flex: 1; }
.cat-body .eyebrow { font-size: 11px; margin-bottom: 6px; }
.cat-body h3 { font-size: 17px; line-height: 1.25; }
.cat-count { display: inline-flex; gap: 6px; margin-top: auto; padding-top: 10px; font: 600 13px/1 var(--body); color: var(--blue); }
.cat-count i { font-style: normal; transition: transform .2s; }
.cat-card:hover .cat-count i { transform: translateX(3px); }

/* product cards */
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.card { display: flex; flex-direction: column; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: border-color .2s, box-shadow .2s, transform .2s; }
.card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-2px); }
.card-img { position: relative; background: var(--well); aspect-ratio: 1; margin: 8px 8px 0; border-radius: var(--radius-sm); overflow: hidden; }
.card-img img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; transition: transform .4s cubic-bezier(.2, .7, .2, 1); }
.card:hover .card-img img { transform: scale(1.04); }
.card-body { display: flex; flex-direction: column; gap: 6px; padding: 14px 16px 16px; flex: 1; }
.card-body .eyebrow { margin: 0; font-size: 11px; }
.card h3 { font-size: 16px; line-height: 1.3; letter-spacing: -0.015em; font-weight: 600; }
.card-foot { margin-top: auto; padding-top: 8px; }
.badge-top { position: absolute; left: 10px; top: 10px; z-index: 1; background: var(--blue); color: var(--white); font: 600 11.5px/1 var(--body); padding: 6px 9px; border-radius: 999px; }

/* amazon best sellers */
.amz-section { background: linear-gradient(180deg, #fff6ea 0%, var(--paper) 62%); }
.amz-head-links { display: flex; align-items: center; gap: 12px 22px; flex-wrap: wrap; }
.card-buy .card-link { display: flex; flex-direction: column; flex: 1; }
.card-buy-foot { padding: 0 16px 16px; }
.card-buy-foot .btn { width: 100%; }
.model { font: 500 12px/1.3 ui-monospace, "SF Mono", Menlo, Consolas, monospace; color: var(--muted); }

/* technology */
.tech-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--ink-3); border: 1px solid var(--ink-3); border-radius: var(--radius); overflow: hidden; }
.tech { background: var(--ink); padding: 28px 24px 32px; }
.tech-ico { width: 44px; height: 44px; border-radius: 12px; background: var(--ink-2); display: grid; place-items: center; margin-bottom: 22px; }
.tech-ico svg { width: 24px; height: 24px; fill: none; stroke: var(--sky); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.tech h3 { margin-bottom: 8px; }
.tech p { font-size: 15px; line-height: 1.55; }

/* oem */
.oem-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(32px, 6vw, 88px); align-items: start; }
.oem-grid h2 { max-width: 13em; }
.chips { list-style: none; padding: 0; margin: 24px 0 28px; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { padding: 8px 14px; border-radius: 999px; background: var(--white); border: 1px solid var(--line); font-size: 14px; font-weight: 500; color: var(--ink-2); }
.steps { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.steps li { display: grid; grid-template-columns: 56px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.steps b { font: 600 15px/1.6 var(--display); color: var(--muted); }
.steps p { color: var(--muted); font-size: 15px; margin-top: 4px; }

.about { max-width: 920px; }
.about-text { font: 500 clamp(20px, 2.3vw, 28px)/1.4 var(--display); color: var(--ink); letter-spacing: -0.02em; }
.amz-link { display: inline-block; margin-top: 24px; font-weight: 600; color: var(--ink); border-bottom: 1.5px solid #ff9f1a; padding-bottom: 2px; }
.amz-link:hover { border-color: var(--ink); }

.cta-band { background: linear-gradient(115deg, #0f3fd1 0%, var(--blue) 48%, #3d8bff 100%); color: var(--white); }
.cta-inner h2 { color: var(--white); }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 44px; padding-bottom: 44px; flex-wrap: wrap; }
.cta-inner h2 { font-size: clamp(24px, 2.8vw, 34px); max-width: 18em; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.cta-band .btn-primary { background: var(--white); color: var(--blue-ink); }
.cta-band .btn-primary:hover { background: var(--ink); color: var(--white); }
.cta-band .btn-line { background: transparent; color: var(--white); border-color: rgba(255, 255, 255, .5); }
.cta-band .btn-line:hover { border-color: var(--white); color: var(--white); }

/* ---------- footer ---------- */
.site-footer { background: var(--ink); color: #97a3b8; padding-top: 64px; font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr repeat(4, 1fr); gap: 40px; padding-bottom: 48px; }
.footer-brand p { margin-top: 16px; max-width: 26em; }
.footer-mail { display: inline-block; margin: 6px 0 -10px; padding: 10px 0; color: var(--sky); font-weight: 600; }
.site-footer h4 { color: var(--white); font: 600 14px/1 var(--body); letter-spacing: 0; margin-bottom: 16px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.site-footer a:hover { color: var(--white); }
.footer-base { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--ink-3); padding-top: 22px; padding-bottom: 28px; font-size: 13px; flex-wrap: wrap; }

/* ---------- page head / crumbs ---------- */
.page-head { padding: clamp(28px, 4vw, 48px) 0 clamp(24px, 3vw, 36px); border-bottom: 1px solid var(--line); background: var(--white); }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 14px; color: var(--muted); margin-bottom: 16px; }
.crumbs a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.crumbs span:not(:last-child) { color: var(--line-2); }

/* ---------- catalogue ---------- */
.catalog { display: grid; grid-template-columns: 248px minmax(0, 1fr); gap: 36px; padding-top: 32px; padding-bottom: 96px; align-items: start; }
/* Filters scroll with the page: the panel is taller than most screens, so a sticky scroll box would always show a scrollbar. */
.filters-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 8px; }
.filters-head h2 { font-size: 18px; letter-spacing: -0.01em; }
.filters fieldset { border: 0; border-top: 1px solid var(--line); margin: 0; padding: 16px 0 14px; }
.filters legend { font: 600 12px/1 var(--body); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); padding: 0; margin-bottom: 10px; float: left; width: 100%; }
.opt { display: flex; align-items: center; gap: 10px; padding: 6px 0; cursor: pointer; font-size: 15px; clear: both; }
.opt-group { clear: both; padding: 12px 0 2px; font: 600 11px/1.2 var(--body); text-transform: uppercase; letter-spacing: .1em; color: var(--ink-2); }
.opt input { appearance: none; -webkit-appearance: none; width: 18px; height: 18px; margin: 0; border: 1.5px solid var(--line-2); border-radius: 5px; background: var(--white); flex: none; display: grid; place-items: center; cursor: pointer; transition: background-color .15s, border-color .15s; }
.opt input[type="radio"] { border-radius: 50%; }
.opt input:checked { background: var(--blue); border-color: var(--blue); }
.opt input:checked::after { content: ""; width: 6px; height: 6px; border-radius: 2px; background: var(--white); }
.opt input[type="radio"]:checked::after { border-radius: 50%; }
.opt span { flex: 1; }
.opt em { font-style: normal; font-size: 13px; color: var(--muted); }
.opt:hover span { color: var(--ink); }
.filters-done, .filters-open { display: none; }
.toolbar { display: flex; align-items: center; gap: 12px; }
.search { flex: 1; display: flex; align-items: center; gap: 10px; height: 46px; padding: 0 16px; background: var(--white); border: 1px solid var(--line-2); border-radius: 999px; transition: border-color .15s; }
.search:focus-within { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(26, 92, 255, .14); }
.search svg { width: 18px; height: 18px; fill: none; stroke: var(--muted); stroke-width: 2; stroke-linecap: round; flex: none; }
.search input { border: 0; outline: 0; background: transparent; font: inherit; font-size: 15px; width: 100%; min-width: 0; color: var(--ink); }
.sort { display: flex; align-items: center; gap: 8px; font-size: 14px; color: var(--muted); white-space: nowrap; }
.sort select { height: 46px; border: 1px solid var(--line-2); border-radius: 999px; padding: 0 36px 0 16px; font: 500 14px/1 var(--body); color: var(--ink); background: var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='m1 1.5 5 5 5-5' fill='none' stroke='%230b1426' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 14px center; appearance: none; -webkit-appearance: none; cursor: pointer; }
.result-count { margin: 18px 0 16px; font-size: 14px; color: var(--muted); }
.result-count b { color: var(--ink); }
.empty { text-align: center; padding: 64px 16px; color: var(--muted); border: 1px dashed var(--line-2); border-radius: var(--radius); }
.empty p { margin-bottom: 16px; }
.card[hidden] { display: none; }

/* ---------- product page ---------- */
.pd { padding-top: 24px; padding-bottom: 72px; }
.pd-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); align-items: start; margin-top: 8px; }
/* The gallery stays in view while the details scroll, but only on screens tall enough to show all of it. */
@media (min-width: 921px) and (min-height: 780px) { .gallery { position: sticky; top: 92px; } }
@media (min-width: 921px) and (max-height: 869px) { .gallery:has(.thumb:nth-child(7)) { position: static; } }
.gallery-main { background: var(--well); border-radius: 20px; aspect-ratio: 1; overflow: hidden; }
.gallery-main img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
/* Six thumbnails per row that shrink to fit, so the row never scrolls sideways; extra photos wrap to a second row. */
.thumbs { display: grid; grid-template-columns: repeat(6, minmax(0, 76px)); gap: 10px; margin-top: 12px; }
.thumb { width: 100%; height: auto; aspect-ratio: 1; padding: 0; border: 1.5px solid transparent; border-radius: 12px; background: var(--well); overflow: hidden; cursor: pointer; transition: border-color .15s; }
.thumb img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.thumb:hover { border-color: var(--line-2); }
.thumb.is-active { border-color: var(--blue); }
.pd-info h1 { font-size: clamp(28px, 3.4vw, 42px); letter-spacing: -0.03em; }
.pd-intro { margin: 16px 0 24px; color: var(--muted); font-size: 17px; }
.specs { width: 100%; border-collapse: collapse; font-size: 15px; }
.specs th, .specs td { text-align: left; vertical-align: top; padding: 12px 0; border-bottom: 1px solid var(--line); }
.specs tr:first-child th, .specs tr:first-child td { border-top: 1px solid var(--line); }
.specs th { width: 34%; font-weight: 500; color: var(--muted); padding-right: 16px; }
.specs td { color: var(--ink); overflow-wrap: anywhere; }
.pd-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.pd-assure { display: flex; align-items: center; gap: 10px; width: fit-content; margin-top: 20px; font-size: 14.5px; font-weight: 500; color: var(--ink-2); }
.pd-assure svg { width: 20px; height: 20px; flex: none; fill: none; stroke: var(--blue); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.pd-assure span { border-bottom: 1px solid var(--line-2); padding-bottom: 1px; }
.pd-assure:hover span { color: var(--blue); border-color: var(--blue); }
.pd-note { margin-top: 10px; font-size: 14px; color: var(--muted); }
.amz-buy { display: flex; align-items: center; justify-content: space-between; gap: 14px 20px; flex-wrap: wrap; margin-top: 24px; padding: 16px 16px 16px 20px; background: #fff6ea; border: 1px solid #f3cf96; border-radius: var(--radius); }
.amz-buy-text b { display: block; color: var(--ink); font: 600 16px/1.3 var(--display); }
.amz-buy-text span { display: block; margin-top: 4px; font-size: 13.5px; color: #6b4300; }
.amz-buy + .pd-cta { margin-top: 14px; }
.amz-sticky { display: none; }
.pd-body { margin-top: clamp(48px, 7vw, 88px); display: grid; gap: clamp(40px, 5vw, 64px); max-width: 920px; }
.pd-block h2 { font-size: clamp(22px, 2.4vw, 28px); margin-bottom: 20px; }
.features { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.features li { position: relative; padding-left: 28px; color: var(--text); }
.features li::before { content: ""; position: absolute; left: 0; top: .55em; width: 12px; height: 12px; border-radius: 4px; background: linear-gradient(135deg, var(--blue), var(--sky)); }
.features strong { color: var(--ink); font-weight: 600; }
.electrical { margin-top: 24px; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px 22px; }
.electrical h3 { font-size: 15px; margin-bottom: 10px; }
.electrical ul { margin: 0; padding: 0; list-style: none; display: grid; gap: 6px; font: 400 13.5px/1.55 ui-monospace, "SF Mono", Menlo, Consolas, monospace; color: var(--ink-2); overflow-wrap: anywhere; }
.detail-imgs { display: grid; gap: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); background: var(--white); }
.detail-imgs img { width: 100%; margin: 0 auto; }

/* ---------- printable catalogue ---------- */
.cat-doc-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.toc a { padding: 8px 14px; border-radius: 999px; border: 1px solid var(--line); background: var(--paper); font-size: 14px; font-weight: 500; }
.toc a:hover { border-color: var(--blue); color: var(--blue); }
.toc em { font-style: normal; color: var(--muted); margin-left: 4px; }
.catalogue-doc { padding-top: 16px; padding-bottom: 96px; }
.print-cover { display: none; }
.cat-group { padding-top: 40px; scroll-margin-top: 80px; }
.cat-group-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; border-bottom: 2px solid var(--blue); padding-bottom: 10px; }
.cat-group-head h3 { font-size: clamp(20px, 2.2vw, 26px); }
.cat-supergroup { margin-top: 56px; font-size: clamp(28px, 3.2vw, 40px); }
.cat-supergroup:first-of-type { margin-top: 24px; }
.cat-group-head span { font-size: 14px; color: var(--muted); }
.cat-group > p { color: var(--muted); font-size: 15px; margin: 10px 0 6px; }
.cat-table { width: 100%; border-collapse: collapse; font-size: 15px; }
.cat-table th { text-align: left; font: 600 12px/1 var(--body); text-transform: uppercase; letter-spacing: .08em; color: var(--muted); padding: 14px 12px 10px 0; border-bottom: 1px solid var(--line); }
.cat-table td { padding: 8px 12px 8px 0; border-bottom: 1px solid var(--line); vertical-align: middle; }
.cat-table td a { font-weight: 500; color: var(--ink); }
.cat-table td a:hover { text-decoration: underline; text-underline-offset: 3px; }
.c-img { width: 84px; }
.c-img img { width: 72px; height: 72px; object-fit: contain; background: var(--well); border-radius: 8px; mix-blend-mode: multiply; }
.c-model { font: 500 13px/1.3 ui-monospace, "SF Mono", Menlo, Consolas, monospace; white-space: nowrap; color: var(--ink-2); }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: clamp(28px, 5vw, 64px); padding-top: 40px; padding-bottom: 96px; align-items: start; }
.form { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form label { display: grid; gap: 8px; font-size: 14px; font-weight: 600; color: var(--ink); }
.form input, .form select, .form textarea { font: 400 16px/1.4 var(--body); color: var(--ink); background: var(--white); border: 1px solid var(--line-2); border-radius: 12px; padding: 12px 14px; width: 100%; transition: border-color .15s, box-shadow .15s; }
.form select { appearance: none; -webkit-appearance: none; background: var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='m1 1.5 5 5 5-5' fill='none' stroke='%230b1426' stroke-width='1.6'/%3E%3C/svg%3E") no-repeat right 14px center; padding-right: 36px; }
.form input:focus, .form select:focus, .form textarea:focus { outline: 0; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(26, 92, 255, .16); }
.form textarea { resize: vertical; min-height: 130px; }
.form .btn { justify-self: start; }
.form-note { font-size: 14px; color: var(--muted); }
.form-note a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.form-error { color: #b42318; font-size: 14px; font-weight: 600; }
.contact-card { background: var(--ink); color: var(--on-ink); border-radius: 20px; padding: 32px; position: sticky; top: 92px; }
.contact-card h2 { color: var(--white); font-size: 22px; }
.contact-mail { display: inline-block; margin: 2px 0 -10px; padding: 10px 0; font: 600 clamp(18px, 2vw, 22px)/1.3 var(--display); color: var(--sky); overflow-wrap: anywhere; }
.contact-card ul { margin: 22px 0 26px; padding: 0; list-style: none; display: grid; gap: 10px; }
.contact-card li { padding-left: 20px; position: relative; }
.contact-card li::before { content: ""; position: absolute; left: 0; top: .6em; width: 8px; height: 8px; border-radius: 2px; background: var(--sky); }
.contact-card .link-arrow { color: var(--white); display: block; width: fit-content; margin-top: 14px; }

/* ---------- warranty ---------- */
.wy-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding-top: 40px; }
.wy-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.wy-ico { width: 44px; height: 44px; border-radius: 12px; background: var(--blue-soft); display: grid; place-items: center; margin-bottom: 22px; }
.wy-ico svg { width: 24px; height: 24px; fill: none; stroke: var(--blue); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.wy-big { font: 600 clamp(30px, 3.4vw, 40px)/1 var(--display); color: var(--ink); letter-spacing: -0.03em; }
.wy-card h2 { font-size: 18px; letter-spacing: -0.01em; margin: 10px 0 8px; }
.wy-card p:last-child { font-size: 15px; color: var(--muted); }
.wy-table { width: 100%; border-collapse: separate; border-spacing: 0; background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; font-size: 15px; }
.wy-table th, .wy-table td { text-align: left; vertical-align: top; padding: 22px 24px; border-bottom: 1px solid var(--line); }
.wy-table tbody tr:last-child > * { border-bottom: 0; }
.wy-table thead th { background: var(--mist); font: 600 12px/1.3 var(--body); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); padding-top: 14px; padding-bottom: 14px; }
.wy-table tbody th { width: 34%; font: 600 17px/1.35 var(--display); color: var(--ink); }
.wy-table tbody th span { display: block; margin-top: 6px; font: 400 14px/1.5 var(--body); color: var(--muted); }
.wy-table td b { display: block; font: 600 16px/1.35 var(--display); color: var(--ink); margin-bottom: 10px; }
.wy-table td small { display: block; margin-top: 8px; font-size: 14px; color: var(--muted); }
.wy-pay { display: inline-block; padding: 5px 12px; border-radius: 999px; background: var(--mist); color: var(--ink-2); font-size: 13.5px; font-weight: 600; }
.wy-pay-us { background: var(--blue-soft); color: var(--blue-ink); }
.wy-terms { margin-top: 40px; max-width: 920px; }
.wy-terms h3 { margin-bottom: 18px; }
.wy-cover { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.wy-list { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.wy-list h3 { margin-bottom: 18px; }
.wy-list ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; }
.wy-list li { position: relative; padding-left: 34px; }
.wy-list li::before { content: ""; position: absolute; left: 0; top: .1em; width: 22px; height: 22px; border-radius: 50%; background: var(--blue-soft) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='m2.5 6.2 2.4 2.3 4.6-5' fill='none' stroke='%231a5cff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 14px no-repeat; }
.wy-list-no li::before { background-color: var(--mist); background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='m3.5 3.5 5 5m0-5-5 5' fill='none' stroke='%235a6478' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E"); }
.wy-claim { display: grid; grid-template-columns: 1fr 1.15fr; gap: clamp(32px, 6vw, 88px); align-items: start; }
.wy-claim h2 { max-width: 12em; }
.wy-claim .btn { margin-top: 28px; }
.wy-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.wy-note { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.wy-note-amz { background: #fff6ea; border-color: #f3cf96; }
.wy-note h3 { margin-bottom: 10px; }
.wy-note p { color: var(--text); font-size: 15px; }
.wy-note a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.faq { max-width: 920px; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 20px 0; cursor: pointer; list-style: none; font: 600 17px/1.4 var(--display); color: var(--ink); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ""; flex: none; width: 14px; height: 14px; background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 14 14'%3E%3Cpath d='M7 1v12M1 7h12' fill='none' stroke='%230b1426' stroke-width='1.6' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq summary:hover { color: var(--blue); }
.faq details p { padding-bottom: 22px; color: var(--muted); max-width: 46em; }

.notfound { padding-top: 96px; padding-bottom: 120px; }
.notfound h1 { max-width: 14em; }

/* ---------- responsive ---------- */
@media (max-width: 1100px) {
  .grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 920px) {
  .nav-toggle { display: flex; position: relative; }
  .site-nav { position: fixed; inset: 68px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line); padding: 8px var(--gutter) 20px; box-shadow: 0 24px 40px -24px rgba(11, 20, 38, .25); transform: translateY(-8px); opacity: 0; visibility: hidden; transition: opacity .2s, transform .2s, visibility 0s .2s; }
  .site-nav a:not(.btn) { padding: 14px 4px; border-radius: 0; border-bottom: 1px solid var(--line); font-size: 17px; }
  .site-nav a:not(.btn):hover, .site-nav a[aria-current="page"] { background: none; }
  .site-nav .btn { margin: 16px 0 0; height: 48px; }
  .nav-open .site-nav { opacity: 1; visibility: visible; transform: none; transition: opacity .2s, transform .2s; }
  .nav-open .nav-toggle span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  .nav-open .nav-toggle span:nth-child(2) { opacity: 0; }
  .nav-open .nav-toggle span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
  .hero-grid, .oem-grid, .pd-grid, .contact-grid, .wy-claim, .wy-cover, .wy-notes { grid-template-columns: minmax(0, 1fr); }
  .hero-visual { max-width: 560px; width: 100%; justify-self: center; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-grid > div { padding: 22px 16px 22px 0; }
  .stats-grid > div:nth-child(2) { border-right: 0; }
  .stats-grid > div:nth-child(3) { padding-left: 0; }
  .stats-grid > div:nth-child(n+3) { border-top: 1px solid var(--ink-3); }
  .grid, .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
  .contact-card { position: static; }
  .catalog { grid-template-columns: 1fr; padding-top: 20px; }
  .filters { position: fixed; inset: 0; z-index: 60; overflow-y: auto; overscroll-behavior: contain; background: var(--paper); padding: 20px var(--gutter) 96px; transform: translateX(-100%); transition: transform .25s ease; }
  .filters-open-state .filters { transform: none; }
  .filters-done { display: flex; position: fixed; left: var(--gutter); right: var(--gutter); bottom: 20px; }
  .filters-open { display: inline-flex; height: 46px; }
  .amz-sticky { display: flex; gap: 10px; position: fixed; left: 0; right: 0; bottom: 0; z-index: 45; padding: 10px var(--gutter) calc(10px + env(safe-area-inset-bottom)); background: rgba(247, 249, 252, .94); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-top: 1px solid var(--line); }
  .amz-sticky .btn { flex: 1; height: 46px; padding: 0 12px; }
  .has-amz { padding-bottom: 76px; }
  .sort { font-size: 0; gap: 0; }
}
@media (max-width: 680px) {
  .wy-summary { grid-template-columns: 1fr; padding-top: 28px; }
  .wy-card { display: grid; grid-template-columns: 44px minmax(0, 1fr); column-gap: 16px; padding: 22px 20px; }
  .wy-ico { grid-row: span 3; margin-bottom: 0; }
  .wy-big { font-size: 28px; }
  .wy-card h2 { margin-top: 6px; }
  .wy-table, .wy-table tbody, .wy-table tr, .wy-table th, .wy-table td { display: block; width: auto; }
  .wy-table thead { display: none; }
  .wy-table tbody tr + tr { border-top: 1px solid var(--line); }
  .wy-table tbody th, .wy-table td { border-bottom: 0; padding: 16px 20px 0; }
  .wy-table tbody th { width: auto; padding-top: 20px; }
  .wy-table tbody tr > :last-child { padding-bottom: 20px; }
  .wy-table td::before { content: attr(data-label); display: block; margin-bottom: 6px; font: 600 11px/1.3 var(--body); text-transform: uppercase; letter-spacing: .1em; color: var(--muted); }
  .wy-table td b { margin-bottom: 8px; }
}
@media (max-width: 560px) {
  .hv-tag { left: 12px; top: 12px; padding: 8px 10px; font-size: 12px; }
  .grid, .grid-3 { gap: 10px; }
  .thumbs { gap: 8px; }
  .card-body { padding: 12px 12px 14px; }
  .card h3 { font-size: 14.5px; }
  .card-buy-foot { padding: 0 10px 12px; }
  .card-buy-foot .btn { padding: 0 8px; font-size: 13px; gap: 6px; }
  .tech-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
  .cat-grid { gap: 10px; }
  .cat-body h3 { font-size: 15px; }
  .toolbar { flex-wrap: wrap; }
  .search { flex-basis: 100%; }
  .sort { margin-left: auto; }
  .specs th { width: 40%; }
  .cat-table th:nth-child(5), .cat-table td:nth-child(5) { display: none; }
  .c-img { width: 60px; }
  .c-img img { width: 52px; height: 52px; }
  .hero-cta .btn { flex: 1; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; scroll-behavior: auto !important; }
}

/* ---------- print (catalogue) ---------- */
@media print {
  @page { size: A4; margin: 14mm 12mm; }
  body { background: #fff; font-size: 10.5pt; }
  .site-header, .site-footer, .crumbs, .toc, .cat-doc-head, .page-head, .skip, .amz-sticky { display: none !important; }
  .wrap { max-width: none; padding: 0; }
  .print-cover { display: block; border-bottom: 2px solid #000; padding-bottom: 10mm; margin-bottom: 4mm; }
  .print-cover .logo-svg { height: 8mm; width: calc(8mm * 325.8 / 30.8); }
  .print-cover h1 { font-size: 26pt; margin-top: 8mm; }
  .print-cover p { color: #555; margin-top: 2mm; }
  .cat-supergroup { break-before: page; margin-top: 0; }
  .cat-group { padding-top: 6mm; }
  .cat-group-head { break-after: avoid; }
  .cat-table tr { break-inside: avoid; }
  .cat-table td a { color: #000; }
  .c-img img { width: 52px; height: 52px; }
  .cat-table td { padding: 4px 8px 4px 0; }
}