/* =========================================================
   MULTI-BOX 多宝 中国 · 站点样式
   视觉：工业机箱 + 技术图纸。主蓝 #0069B4，信号橙 #E74011。
   ========================================================= */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--white);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--blue-700); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
svg { fill: none; stroke: currentColor; stroke-width: 1.8; }

h1, h2, h3, h4 {
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.015em;
  text-wrap: balance;
  margin: 0 0 .5em;
}
h1 { font-size: clamp(2rem, 1.4rem + 2.2vw, 3.35rem); }
h2 { font-size: clamp(1.55rem, 1.2rem + 1.2vw, 2.2rem); }
h3 { font-size: clamp(1.1rem, 1rem + .35vw, 1.3rem); line-height: 1.3; }
p { margin: 0 0 1em; text-wrap: pretty; }
strong, b { font-weight: 800; }
small { font-size: .8rem; }
ul, ol { margin: 0; padding: 0; }
li { list-style: none; }
table { border-collapse: collapse; width: 100%; }
.mono { font-family: var(--font-mono); font-size: .86em; letter-spacing: .01em; }
.muted { color: var(--muted); font-weight: 400; }

.wrap { width: min(100% - var(--gutter) * 2, var(--wrap)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: var(--radius);
}
.skip:focus { top: 12px; color: #fff; }
:focus-visible { outline: 3px solid var(--sky); outline-offset: 2px; }

/* ── 顶部条 / 导航 ─────────────────────────────────────── */
.topbar {
  background: var(--navy); color: #C9D8E3; font-size: .78rem;
  letter-spacing: .02em;
}
.topbar__inner {
  display: flex; justify-content: space-between; align-items: center;
  gap: 20px; min-height: 34px;
}
.topbar__links { display: flex; gap: 20px; }
.topbar a { color: #E6EFF5; text-decoration: none; }
.topbar a:hover { color: #fff; text-decoration: underline; }

.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  height: var(--header-h);
}
.header__inner { display: flex; align-items: center; gap: 26px; height: var(--header-h); }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; flex: 0 0 auto; }
.logo img { width: 150px; height: auto; }
.logo__cn {
  font-size: .72rem; color: var(--muted); letter-spacing: .12em;
  border-left: 1px solid var(--line); padding-left: 12px; line-height: 1.2;
}
.nav { display: flex; gap: 2px; margin-left: auto; }
.nav__link {
  position: relative; padding: 8px 11px; font-size: .93rem; font-weight: 400;
  color: var(--ink-2); text-decoration: none; border-radius: var(--radius);
  white-space: nowrap;
}
.nav__link:hover { color: var(--blue); background: var(--paper); }
.nav__link.is-active { color: var(--blue); font-weight: 800; }
.nav__link.is-active::after {
  content: ""; position: absolute; left: 11px; right: 11px; bottom: 2px;
  height: 2px; background: var(--blue);
}
.header__actions { display: flex; align-items: center; gap: 10px; }
.icon-btn {
  display: inline-grid; place-items: center; width: 40px; height: 40px;
  background: none; border: 1px solid var(--line); border-radius: var(--radius);
  color: var(--ink-2);
}
.icon-btn:hover { border-color: var(--blue); color: var(--blue); }
.icon-btn svg { width: 19px; height: 19px; }
.menu-btn { display: none; }
.header__cta { padding: 10px 16px; font-size: .88rem; }

.searchbar { border-top: 1px solid var(--line); background: #fff; }
.searchbar__inner { display: flex; align-items: center; gap: 12px; padding: 14px 0; }
.searchbar svg { width: 20px; height: 20px; color: var(--muted); }
.searchbar input {
  flex: 1; border: 0; border-bottom: 2px solid var(--line); padding: 8px 2px;
  font-size: 1rem; background: transparent;
}
.searchbar input:focus { outline: none; border-color: var(--blue); }

/* ── 按钮 / 标签 ───────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border: 1px solid transparent; border-radius: var(--radius);
  font-size: .9rem; font-weight: 800; letter-spacing: .02em; line-height: 1.2;
  text-decoration: none; transition: background .18s var(--ease), color .18s, border-color .18s, transform .18s;
}
.btn:active { transform: translateY(1px); }
.btn--blue { background: var(--blue); color: #fff; }
.btn--blue:hover { background: var(--blue-700); color: #fff; }
.btn--orange { background: var(--orange); color: #fff; }
.btn--orange:hover { background: #B32F08; color: #fff; }
.btn--outline { border-color: var(--line-strong); color: var(--ink); background: #fff; }
.btn--outline:hover { border-color: var(--blue); color: var(--blue); }
.btn--ghost { color: var(--ink-2); background: var(--paper); }
.btn--ghost:hover { background: var(--paper-2); color: var(--blue); }
.btn--ghost-light { border-color: rgba(255,255,255,.4); color: #fff; }
.btn--ghost-light:hover { background: rgba(255,255,255,.1); color: #fff; }
.btn--lg { padding: 14px 24px; font-size: .95rem; }
.btn--block { display: flex; width: 100%; }

.eyebrow {
  display: inline-block; margin-bottom: 12px;
  font-size: .72rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase;
  color: var(--blue);
}
.eyebrow--light { color: var(--sky); }
.eyebrow a { color: inherit; text-decoration: none; }
.eyebrow a:hover { text-decoration: underline; }

.tag {
  display: inline-flex; align-items: baseline; gap: 6px;
  padding: 3px 9px; border: 1px solid var(--line); border-radius: 2px;
  font-size: .74rem; font-weight: 800; letter-spacing: .04em; color: var(--ink-2);
  background: #fff; white-space: nowrap;
}
.tag--muted { color: var(--muted); background: var(--paper); font-weight: 400; }
.tag--ip { color: var(--blue-900); background: var(--ice); border-color: #CBE4F3; }
.tag--link { text-decoration: none; }
.tag--link:hover { border-color: var(--blue); color: var(--blue); }
.tag--link span { color: var(--muted); font-weight: 400; }
.pill {
  display: inline-grid; place-items: center; min-width: 34px; height: 24px; padding: 0 8px;
  border-radius: 12px; background: var(--blue); color: #fff;
  font-size: .74rem; font-weight: 800; font-family: var(--font-mono);
}

/* ── 首页 hero ─────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(900px 500px at 78% 18%, rgba(138,198,231,.28), transparent 60%),
    linear-gradient(180deg, #F7FAFC 0%, #FFFFFF 78%);
  border-bottom: 1px solid var(--line);
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .5;
  background-image:
    linear-gradient(to right, rgba(0,105,180,.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0,105,180,.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(to bottom, #000 0%, transparent 85%);
}
.hero__grid {
  position: relative; display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 56px; align-items: center; padding: 64px 0 56px;
}
.hero h1 { margin-bottom: 18px; }
.hero__lead { max-width: 34em; font-size: 1.06rem; color: var(--ink-2); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 30px; }
.hero__stats {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0;
  margin: 0; border-top: 1px solid var(--line);
}
.hero__stats > div { padding: 16px 16px 0 0; border-right: 1px solid var(--line); }
.hero__stats > div:last-child { border-right: 0; padding-right: 0; }
.hero__stats dt { font-size: .72rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted); }
.hero__stats dd {
  margin: 2px 0 0; font-size: clamp(1.4rem, 1.1rem + .9vw, 1.9rem); font-weight: 800; color: var(--blue-900);
  font-variant-numeric: tabular-nums;
}
.hero__visual { min-width: 0; }
.hero__stage {
  position: relative; aspect-ratio: 1 / 1; display: grid; place-items: center;
  background: radial-gradient(circle at 50% 52%, #fff 0%, #fff 46%, rgba(232,243,250,.75) 72%, rgba(232,243,250,0) 73%);
}
.hero__stage img { width: 82%; height: auto; filter: drop-shadow(0 30px 40px rgba(10,34,51,.16)); }
.hero__stage::after {
  content: ""; position: absolute; width: 76%; aspect-ratio: 1; border: 1px solid rgba(0,105,180,.22);
  border-radius: 50%; z-index: -1;
}
.hero__badge {
  position: absolute; top: 8%; right: 6%;
  background: var(--blue); color: #fff; font-weight: 800; font-size: .82rem;
  padding: 8px 12px; border-radius: 2px; letter-spacing: .06em;
  box-shadow: 0 10px 24px rgba(0,105,180,.28);
}
.hero__tag {
  position: absolute; left: 3%; bottom: 8%;
  font-family: var(--font-mono); font-size: .78rem; color: var(--ink-2);
  background: #fff; border: 1px solid var(--line); padding: 6px 10px;
}
.dim { position: absolute; color: var(--blue-700); font-family: var(--font-mono); font-size: .7rem; display: flex; align-items: center; gap: 6px; }
.dim b { font-weight: 400; background: #fff; padding: 0 4px; }
.dim i { display: block; background: var(--blue); opacity: .5; }
.dim--w { left: 8%; right: 8%; bottom: 22%; flex-direction: column; }
.dim--w i { width: 100%; height: 1px; }
.dim--h { top: 14%; bottom: 22%; right: 4%; flex-direction: row-reverse; }
.dim--h i { width: 1px; height: 100%; }
.hero__caption { margin-top: 10px; font-size: .76rem; color: var(--muted); text-align: center; font-family: var(--font-mono); }
@media (max-width: 560px) { .hero__caption { display: none; } }

/* 快速筛选 */
.quickfind { background: var(--navy); color: #fff; }
.quickfind__form {
  display: grid; grid-template-columns: 1.25fr repeat(4, minmax(110px, .55fr)) auto;
  align-items: end; gap: 14px; padding: 22px 0;
}
.quickfind__head strong { display: block; font-size: .98rem; line-height: 1.4; }
.quickfind .eyebrow { color: var(--sky); margin-bottom: 2px; }
.quickfind .field__label { color: #B9CDDB; }
.quickfind input, .quickfind select {
  background: #fff; border: 1px solid rgba(255,255,255,.35); color: var(--ink);
}
.quickfind input::placeholder { color: #7E8F9B; }
.quickfind .btn { height: 44px; }

/* ── 区块骨架 ──────────────────────────────────────────── */
.section { padding: 76px 0; }
.section--tight { padding: 44px 0 64px; }
.section--tint { background: var(--paper); border-block: 1px solid var(--line); }
.section--blueprint {
  background:
    linear-gradient(rgba(255,255,255,.86), rgba(255,255,255,.86)),
    repeating-linear-gradient(0deg, rgba(0,105,180,.18) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(0,105,180,.18) 0 1px, transparent 1px 28px);
  border-block: 1px solid var(--line);
}
.section__head { display: flex; justify-content: space-between; align-items: end; gap: 40px; margin-bottom: 34px; }
.section__head h2 { margin-bottom: 0; }
.section__intro { max-width: 34em; min-width: 16em; margin: 0; color: var(--muted); font-size: .95rem; }
.section__intro a, .prose a { color: var(--blue); }

/* ── 类别卡 ────────────────────────────────────────────── */
.cat-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.cat-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); text-decoration: none; color: inherit; overflow: hidden;
  transition: border-color .2s, box-shadow .2s, transform .2s var(--ease);
}
.cat-card:hover { border-color: #A9C6DA; box-shadow: var(--shadow); transform: translateY(-2px); }
.cat-card__media { aspect-ratio: 4 / 3; background: linear-gradient(160deg, #F7FAFC, #E9F1F6); display: grid; place-items: center; padding: 18px; }
.cat-card__media img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.cat-card__body { padding: 18px 18px 20px; display: flex; flex-direction: column; flex: 1; }
.cat-card__count { font-family: var(--font-mono); font-size: .72rem; color: var(--muted); }
.cat-card h3 { margin: 4px 0 6px; font-size: 1.12rem; }
.cat-card p { margin: 0 0 14px; color: var(--muted); font-size: .88rem; line-height: 1.6; }
.cat-card__link { margin-top: auto; font-size: .82rem; font-weight: 800; color: var(--blue); }
.cat-grid--wide { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.cat-card--row { flex-direction: row; align-items: stretch; }
.cat-card--row .cat-card__media { flex: 0 0 38%; aspect-ratio: auto; }
.cat-card--row .cat-card__body { padding: 24px; }
.cat-card--row h2 { font-size: 1.4rem; margin: 2px 0 6px; }
.cat-card__top { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.cat-card__lead { color: var(--ink-2) !important; font-size: .9rem !important; }

/* ── 系列卡 ────────────────────────────────────────────── */
.series-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.series-grid--compact { grid-template-columns: repeat(3, minmax(0, 1fr)); max-width: 980px; }
.series-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  text-decoration: none; color: inherit; border-radius: var(--radius); overflow: hidden;
  transition: border-color .2s, transform .2s var(--ease), box-shadow .2s;
}
.series-card:hover { border-color: #A9C6DA; transform: translateY(-2px); box-shadow: var(--shadow); }
.series-card__media { aspect-ratio: 16 / 10; background: linear-gradient(170deg, #FBFDFE, #EDF3F7); display: grid; place-items: center; padding: 14px; border-bottom: 1px solid var(--line); }
.series-card__media img { width: 100%; height: 100%; object-fit: contain; }
.series-card__body { padding: 14px 16px 16px; display: flex; flex-direction: column; flex: 1; }
.series-card__top { display: flex; justify-content: space-between; align-items: start; gap: 10px; }
.series-card h3 { font-size: 1.02rem; margin: 0 0 4px; }
.series-card p { margin: 0 0 12px; font-size: .84rem; color: var(--muted); line-height: 1.55; }
.series-card__meta { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }

/* ── 事实 / 材料表 ─────────────────────────────────────── */
.facts-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.fact { padding: 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.fact__num { display: block; font-size: 2.6rem; font-weight: 800; color: var(--blue); line-height: 1; margin-bottom: 16px; letter-spacing: -.03em; }
.fact h3 { font-size: 1rem; }
.fact p { margin: 0; font-size: .88rem; color: var(--muted); line-height: 1.65; }

.matte { background: #fff; border: 1px solid var(--line); padding: 40px; box-shadow: var(--shadow-soft); }
.matte__head { max-width: 700px; margin-bottom: 26px; }
.matte__head p { color: var(--muted); margin-bottom: 0; }
.matte__foot { margin: 20px 0 0; font-size: .9rem; color: var(--muted); }

.data-table { font-size: .88rem; }
.data-table th, .data-table td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
.data-table thead th {
  font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
  font-weight: 800; background: var(--paper); border-bottom: 1px solid var(--line-strong);
}
.data-table tbody tr:hover { background: #FAFCFD; }
.data-table--materials th[scope="row"] { width: 16%; font-weight: 800; }
.data-table .num { text-align: right; font-variant-numeric: tabular-nums; font-family: var(--font-mono); }

/* ── 应用 ──────────────────────────────────────────────── */
.app-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.app-chip {
  display: flex; flex-direction: column; gap: 2px; padding: 16px 18px;
  background: #fff; border: 1px solid var(--line); text-decoration: none; color: inherit;
  border-left: 3px solid var(--sky); transition: border-color .2s, background .2s;
}
.app-chip:hover { border-left-color: var(--orange); background: #FCFDFE; }
.app-chip__zh { font-weight: 800; font-size: .95rem; }
.app-chip__de { font-size: .72rem; color: var(--muted); letter-spacing: .02em; }

/* ── 分栏 ──────────────────────────────────────────────── */
.split { display: grid; grid-template-columns: 1.25fr .75fr; gap: 40px; }
.split--wide { grid-template-columns: 1.4fr .6fr; }
.split__main h2 { margin-top: 0; }
.split__aside { min-width: 16em; }
.link-list { display: grid; gap: 10px; }
.link-list a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--line); padding-bottom: 8px; font-size: .94rem; text-wrap: pretty; }
.link-list a:hover { color: var(--blue); border-color: var(--blue); }

/* ── CTA 带 ────────────────────────────────────────────── */
.cta-band { background: var(--blue-900); color: #fff; padding: 52px 0; position: relative; overflow: hidden; }
.cta-band::before {
  content: ""; position: absolute; inset: 0; opacity: .16;
  background: repeating-linear-gradient(90deg, #fff 0 1px, transparent 1px 40px);
  mask-image: linear-gradient(90deg, transparent, #000 55%, transparent);
}
.cta-band__inner { position: relative; display: flex; justify-content: space-between; align-items: center; gap: 40px; }
.cta-band h2 { color: #fff; font-size: clamp(1.4rem, 1.2rem + .8vw, 1.9rem); margin-bottom: 8px; }
.cta-band p { margin: 0; color: #C7DCEB; max-width: 38em; }
.cta-band__actions { display: flex; gap: 10px; flex: 0 0 auto; }
.cta-band__actions .btn { min-height: 46px; }

/* ── 页头 / 面包屑 ─────────────────────────────────────── */
.page-head { padding: 34px 0 40px; border-bottom: 1px solid var(--line); background: linear-gradient(180deg, #F8FBFD, #fff); }
.page-head__inner { display: flex; justify-content: space-between; align-items: end; gap: 40px; }
.page-head h1 { margin-bottom: 12px; }
.page-head__lead { max-width: 52em; margin: 0; color: var(--ink-2); }
.page-head__stats { display: flex; gap: 28px; margin: 0; flex: 0 0 auto; }
.page-head__stats dt { font-size: .7rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.page-head__stats dd { margin: 2px 0 0; font-size: 1.55rem; font-weight: 800; color: var(--blue-900); font-variant-numeric: tabular-nums; }

.crumbs { padding: 18px 0 0; font-size: .8rem; }
.crumbs ol { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); }
.crumbs li + li::before { content: "/"; margin-right: 8px; color: var(--line-strong); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--blue); }
.crumbs span { color: var(--ink-2); }

/* ── 分类 / 系列 hero ──────────────────────────────────── */
.cat-hero { padding: 36px 0 48px; background: linear-gradient(180deg, #F6FAFC, #fff); border-bottom: 1px solid var(--line); }
.cat-hero__grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 50px; align-items: center; }
.cat-hero__lead { font-size: 1.08rem; max-width: 38em; color: var(--ink-2); }
.cat-hero__meta { display: flex; flex-wrap: wrap; gap: 22px; font-size: .86rem; color: var(--muted); border-top: 1px solid var(--line); padding-top: 16px; }
.cat-hero__meta strong { color: var(--blue-900); font-size: 1.15rem; }
.cat-hero__media { display: grid; place-items: center; }
.cat-hero__media img { max-height: 340px; width: auto; object-fit: contain; }
.cat-hero h1 { margin-bottom: 14px; }

.series-hero { padding: 36px 0 52px; background: linear-gradient(180deg, #F7FAFC, #fff); border-bottom: 1px solid var(--line); }
.series-hero__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: center; }
.series-hero__lead { font-size: 1rem; color: var(--ink-2); max-width: 40em; }
.series-hero__actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.series-hero__media { position: relative; display: grid; place-items: center; }
.series-hero__media img { max-height: 360px; width: auto; object-fit: contain; filter: drop-shadow(0 24px 36px rgba(10,34,51,.14)); }
.series-hero__tags { position: absolute; left: 0; bottom: 0; display: flex; gap: 6px; }
.chip-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 6px 0 0; }
.chip-list li {
  padding: 4px 10px; background: var(--ice); color: var(--blue-900);
  font-size: .78rem; font-weight: 800; border-radius: 2px;
}

/* ── 表格区 / 筛选 ─────────────────────────────────────── */
.table-head { display: flex; justify-content: space-between; align-items: end; gap: 30px; margin-bottom: 20px; }
.table-head h2 { margin-bottom: 6px; }
.table-head__note { margin: 0; color: var(--muted); font-size: .88rem; max-width: 46em; }
.filter input {
  width: min(320px, 60vw); padding: 10px 12px; border: 1px solid var(--line-strong);
  border-radius: var(--radius); background: #fff;
}
.filter input:focus { border-color: var(--blue); outline: 2px solid rgba(0,105,180,.15); }

.spec-table { width: 100%; }
.spec-table .data-table thead th {
  position: sticky; top: calc(var(--header-h) + 1px); z-index: 5;
  box-shadow: 0 1px 0 var(--line-strong);
}
.data-table--models th[scope="row"] { font-weight: 800; }
.data-table--models th[scope="row"] a { color: var(--ink); text-decoration: none; }
.data-table--models th[scope="row"] a:hover { color: var(--blue); }
.data-table--models td, .data-table--models th { padding: 10px 12px; }
.row-link { text-align: right; }
.row-link a { font-weight: 800; text-decoration: none; color: var(--blue); }
.filter-empty { margin: 18px 0 0; padding: 14px 16px; background: var(--paper); border: 1px dashed var(--line-strong); font-size: .9rem; color: var(--muted); }
.table-foot { margin-top: 16px; font-size: .8rem; color: var(--muted); }

/* ── 产品页 ────────────────────────────────────────────── */
.product { padding: 30px 0 20px; }
.product__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 52px; align-items: start; }
.product__stage {
  position: relative; background: linear-gradient(170deg, #FBFDFE, #EEF4F8);
  border: 1px solid var(--line); border-radius: var(--radius);
  aspect-ratio: 1 / 1; display: grid; place-items: center; padding: 36px;
}
.product__stage::before {
  content: ""; position: absolute; left: 36px; right: 36px; top: 36px; bottom: 36px;
  border: 1px dashed rgba(0,105,180,.18); pointer-events: none;
}
.product__stage img { max-height: 100%; max-width: 100%; width: auto; height: auto; object-fit: contain; mix-blend-mode: multiply; }
.product__ip {
  position: absolute; top: 18px; left: 18px; background: var(--blue); color: #fff;
  font-weight: 800; font-size: .78rem; padding: 6px 10px; letter-spacing: .05em; border-radius: 2px;
}
.product__img-note { font-size: .74rem; color: var(--muted); margin: 8px 0 0; }
.product__thumbs {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 12px;
  background: var(--line); border: 1px solid var(--line);
}
.product__thumbs li { background: #fff; padding: 10px 12px; display: flex; align-items: baseline; gap: 4px; flex-wrap: nowrap; white-space: nowrap; }
.thumb-meta { font-family: var(--font-mono); font-size: .66rem; color: var(--muted); width: 100%; letter-spacing: .1em; }
.product__thumbs strong { font-size: 1.2rem; font-variant-numeric: tabular-nums; }
.product__thumbs small { color: var(--muted); font-size: .7rem; }
.product__info h1 { margin-bottom: 8px; }
.product__tagline { display: flex; flex-wrap: wrap; gap: 8px; margin: 4px 0 0; }
.product__tagline span {
  padding: 4px 10px; background: var(--paper); border: 1px solid var(--line);
  font-family: var(--font-mono); font-size: .8rem; color: var(--ink-2);
}
.product__tagline .is-ip { background: var(--ice); border-color: #CBE4F3; color: var(--blue-900); font-weight: 800; }
.product__facts { display: grid; grid-template-columns: 1fr 1fr; gap: 0; margin: 20px 0; border-top: 1px solid var(--line); }
.product__facts > div { padding: 10px 14px 10px 0; border-bottom: 1px solid var(--line); }
.product__facts dt { font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.product__facts dd { margin: 2px 0 0; font-weight: 800; font-size: .95rem; }
.product__actions { display: flex; flex-wrap: wrap; gap: 10px; margin: 22px 0 14px; }
.product__source { font-size: .76rem; color: var(--muted); line-height: 1.6; }
.product__body { display: grid; grid-template-columns: minmax(0, 1fr) 320px; gap: 48px; align-items: start; }
.product__side { display: grid; gap: 16px; position: sticky; top: calc(var(--header-h) + 18px); }

.prose { max-width: 72ch; }
.prose h2 { margin-top: 1.3em; font-size: 1.45rem; }
.prose p { color: var(--ink-2); }
.prose--wide { max-width: 860px; }
.prose--legal { max-width: 800px; }
.prose--legal h2 { font-size: 1.18rem; margin-top: 1.8em; }
.prose--legal p { color: var(--ink-2); }
.legal-updated { margin-top: 2.5em; font-size: .8rem; color: var(--muted); }

.specs { margin-top: 40px; }
.specs__head { margin-bottom: 20px; }
.specs__head p { color: var(--muted); font-size: .88rem; margin: 0; }
.spec-group { margin-bottom: 30px; }
.spec-group h3 {
  font-size: .92rem; letter-spacing: .06em; text-transform: uppercase; color: var(--blue-900);
  padding-bottom: 8px; border-bottom: 2px solid var(--blue); margin-bottom: 0;
}
.spec-group__note { font-size: .8rem; color: var(--orange); margin: 8px 0 0; }
.spec-group--ex h3 { border-color: var(--orange); }
.data-table--specs th[scope="row"] { width: 42%; font-weight: 400; color: var(--ink-2); }
.data-table--specs td { font-weight: 800; text-align: right; font-variant-numeric: tabular-nums; }
.data-table--specs .de {
  display: block; font-family: var(--font-mono); font-size: .66rem; color: var(--muted);
  font-weight: 400; margin-top: 2px; letter-spacing: .01em;
}
.spec-table .data-table--specs thead th { position: static; box-shadow: none; }

.callout { border-left: 3px solid var(--orange); background: var(--orange-soft); padding: 20px 22px; margin-top: 30px; }
.callout h3 { font-size: 1rem; color: #8A2A0A; }
.callout p { margin: 0; font-size: .9rem; color: #5C2A18; }

.side-card { border: 1px solid var(--line); background: #fff; padding: 20px; border-radius: var(--radius); }
.side-card h3 { font-size: .98rem; margin-bottom: 10px; }
.side-card p { font-size: .86rem; color: var(--muted); }
.side-card--fact { background: var(--ice); border-color: #CBE4F3; }
.side-card--fact p { color: var(--blue-900); }
.side-card--contact { background: var(--paper); }
.dl-list { display: grid; gap: 2px; }
.dl-list a { display: flex; gap: 12px; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--ink); }
.dl-list a:hover { color: var(--blue); }
.dl-list__icon {
  flex: 0 0 auto; display: grid; place-items: center; width: 38px; height: 38px;
  background: var(--paper); border: 1px solid var(--line); font-family: var(--font-mono); font-size: .62rem; font-weight: 800;
}
.dl-list a strong { display: block; font-size: .84rem; }
.dl-list a small { display: block; font-size: .72rem; color: var(--muted); }

.prod-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.prod-card { display: flex; flex-direction: column; border: 1px solid var(--line); background: #fff; text-decoration: none; color: inherit; transition: border-color .2s, transform .2s; }
.prod-card:hover { border-color: #A9C6DA; transform: translateY(-2px); }
.prod-card__media { aspect-ratio: 1 / 1; background: linear-gradient(165deg, #FBFDFE, #EFF4F8); display: grid; place-items: center; padding: 18px; }
.prod-card__media img { width: 100%; height: 100%; object-fit: contain; }
.prod-card__body { padding: 12px 14px 16px; border-top: 1px solid var(--line); }
.prod-card__model { display: block; font-weight: 800; font-size: .92rem; }
.prod-card__meta { display: block; font-size: .78rem; color: var(--muted); margin-top: 3px; }

/* 询价表单 */
.inquiry-block { display: grid; grid-template-columns: .8fr 1.2fr; gap: 52px; align-items: start; }
.inquiry-block h2 { margin-top: 0; }
.contact-mini { display: grid; gap: 10px; margin-top: 22px; }
.contact-mini li { display: grid; grid-template-columns: 60px 1fr; gap: 12px; font-size: .9rem; border-top: 1px solid var(--line); padding-top: 10px; }
.contact-mini span { color: var(--muted); font-size: .8rem; }
.inquiry-block__form { background: var(--paper); border: 1px solid var(--line); padding: 28px; border-radius: var(--radius); }

.enquiry__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.field--full { grid-column: 1 / -1; }
.field__label { font-size: .78rem; font-weight: 800; color: var(--ink-2); letter-spacing: .02em; }
.field__label em { color: var(--orange); font-style: normal; }
.field input, .field select, .field textarea {
  width: 100%; padding: 10px 12px; background: #fff; border: 1px solid var(--line-strong);
  border-radius: var(--radius); font-size: .9rem; min-height: 44px;
}
.field textarea { line-height: 1.65; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); outline: 2px solid rgba(0,105,180,.14); }
.field--inline { gap: 4px; }
.enquiry__foot { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-top: 18px; }
.enquiry__note { margin: 0; font-size: .74rem; color: var(--muted); max-width: 40em; }
.enquiry__note a { color: var(--blue); }
.enquiry__status { margin: 12px 0 0; font-size: .86rem; font-weight: 800; color: var(--blue-900); min-height: 1.2em; }
.enquiry__status.is-error { color: var(--orange); }
.enquiry__fallback { margin: 10px 0 0; font-size: .74rem; color: var(--muted); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }

/* ── 应用页 ────────────────────────────────────────────── */
.app-list { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.app-block { padding: 30px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; scroll-margin-top: calc(var(--header-h) + 20px); }
.app-block__head { display: flex; gap: 16px; align-items: start; margin-bottom: 12px; }
.app-block__num { font-size: .72rem; font-family: var(--font-mono); color: var(--blue); padding-top: 6px; }
.app-block h2 { font-size: 1.25rem; margin-bottom: 2px; }
.app-block__de { font-size: .74rem; color: var(--muted); letter-spacing: .02em; }
.app-block__desc { color: var(--ink-2); font-size: .92rem; }
.app-block__series { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.app-block__label { font-size: .72rem; color: var(--muted); margin-right: 4px; }

/* ── 选型器 ────────────────────────────────────────────── */
.selector { background: #fff; border: 1px solid var(--line); padding: 24px; border-radius: var(--radius); }
.selector__row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-bottom: 14px; }
.selector__row--dims { grid-template-columns: repeat(6, minmax(0, 1fr)); }
.selector__foot { display: flex; justify-content: space-between; align-items: center; gap: 20px; border-top: 1px solid var(--line); padding-top: 16px; }
.selector__hint { margin: 0; font-size: .78rem; color: var(--muted); max-width: 52em; }
.selector__actions { display: flex; gap: 8px; flex: 0 0 auto; }
.selector__result { margin-top: 36px; }
.selector__result-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 6px 20px; margin-bottom: 12px; }
.selector__result-head strong { white-space: nowrap; }
.selector__result-head strong { font-size: 1.1rem; }
.selector__result-head span { font-size: .8rem; color: var(--muted); }

/* ── 下载 ──────────────────────────────────────────────── */
.dl-hero { display: flex; gap: 26px; align-items: center; background: #fff; border: 1px solid var(--line); padding: 28px; border-radius: var(--radius); }
.dl-hero__icon { flex: 0 0 auto; display: grid; place-items: center; width: 88px; height: 108px; background: var(--blue); color: #fff; font-family: var(--font-mono); font-weight: 800; letter-spacing: .08em; }
.dl-hero__body { flex: 1; }
.dl-hero h2 { margin: 0 0 6px; font-size: 1.4rem; }
.dl-hero p { margin: 0 0 10px; color: var(--muted); font-size: .9rem; }
.dl-hero__meta { display: flex; gap: 6px; }
.dl-hero__action { flex: 0 0 auto; }
.dl-link { font-weight: 800; text-decoration: none; }
.notes-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-top: 32px; }
.note-card { border: 1px solid var(--line); background: #fff; padding: 20px; }
.note-card h3 { font-size: .98rem; }
.note-card p { margin: 0; font-size: .86rem; color: var(--muted); }

/* ── 知识 / 文章 ───────────────────────────────────────── */
.kn-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.kn-card { display: block; border: 1px solid var(--line); background: #fff; padding: 28px; text-decoration: none; color: inherit; transition: border-color .2s, transform .2s; }
.kn-card:hover { border-color: #A9C6DA; transform: translateY(-2px); }
.kn-card__index { display: block; font-family: var(--font-mono); font-size: .72rem; color: var(--blue); margin-bottom: 12px; }
.kn-card h2 { font-size: 1.3rem; }
.kn-card p { color: var(--muted); font-size: .9rem; }
.kn-card__more { font-size: .82rem; font-weight: 800; color: var(--blue); }

.faq { border-top: 1px solid var(--line); max-width: 920px; }
.faq__item { border-bottom: 1px solid var(--line); background: transparent; }
.faq__item summary {
  list-style: none; cursor: pointer; padding: 18px 44px 18px 0; position: relative;
  font-weight: 800; font-size: .98rem;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::after {
  content: "+"; position: absolute; right: 6px; top: 14px; font-size: 1.35rem; color: var(--blue); font-weight: 400;
}
.faq__item[open] summary::after { content: "−"; }
.faq__answer { padding: 0 40px 18px 0; color: var(--ink-2); font-size: .92rem; }
.faq__answer p { margin: 0; }

.article { padding: 26px 0 40px; }
.article__grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 54px; align-items: start; }
.article__head { border-bottom: 1px solid var(--line); padding-bottom: 24px; margin-bottom: 26px; }
.article__head h1 { font-size: clamp(1.8rem, 1.4rem + 1.4vw, 2.6rem); }
.article__summary { font-size: 1.02rem; color: var(--muted); max-width: 40em; }
.article__body .prose h2 { font-size: 1.35rem; border-left: 3px solid var(--blue); padding-left: 12px; }
.article__foot { margin-top: 40px; border-top: 1px solid var(--line); padding-top: 22px; }
.article__foot h2 { font-size: 1rem; }
.source-list { display: grid; gap: 6px; }
.source-list a { font-family: var(--font-mono); font-size: .78rem; word-break: break-word; }
.article__disclaimer { font-size: .8rem; color: var(--muted); margin-top: 16px; }
.article__side { display: grid; gap: 16px; position: sticky; top: calc(var(--header-h) + 18px); }

/* 数据来源 */
.source-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.source-card { padding: 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.source-card__tag { display: inline-block; font-size: .68rem; font-weight: 800; letter-spacing: .12em; color: var(--blue); margin-bottom: 8px; text-transform: uppercase; }
.source-card h2 { font-size: 1.1rem; }
.source-card p { margin: 0; color: var(--muted); font-size: .88rem; }
.kb-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.kb-stats > div { padding: 18px 20px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.kb-stats dt { font-size: .72rem; color: var(--muted); letter-spacing: .04em; }
.kb-stats dd { margin: 2px 0 0; font-size: 1.5rem; font-weight: 800; color: var(--blue-900); font-variant-numeric: tabular-nums; }
.kb-note { margin-top: 18px; font-size: .84rem; color: var(--muted); }

/* ── 关于 ──────────────────────────────────────────────── */
.about-hero { padding: 40px 0 52px; background: linear-gradient(180deg, #F7FAFC, #fff); border-bottom: 1px solid var(--line); }
.about-hero__grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: end; }
.about-hero h1 { max-width: 12em; }
.about-hero__lead { font-size: 1.08rem; color: var(--ink-2); max-width: 36em; }
.about-hero__op { font-size: .86rem; color: var(--muted); }
.about-hero__facts { margin: 0; display: grid; gap: 0; border-top: 1px solid var(--line); }
.about-hero__facts > div { display: grid; grid-template-columns: 90px 1fr; gap: 16px; padding: 10px 0; border-bottom: 1px solid var(--line); }
.about-hero__facts dt { font-size: .74rem; color: var(--muted); letter-spacing: .04em; }
.about-hero__facts dd { margin: 0; font-weight: 800; font-size: .88rem; }

.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.timeline li { padding: 20px 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.timeline__year { display: block; font-size: 1.5rem; font-weight: 800; color: var(--blue); line-height: 1; margin-bottom: 10px; font-variant-numeric: tabular-nums; }
.timeline p { margin: 0; font-size: .84rem; color: var(--ink-2); line-height: 1.6; }

.svc-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.svc { padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff; }
.svc h3 { font-size: 1rem; margin-bottom: 2px; }
.svc__de { display: block; font-size: .7rem; color: var(--blue); margin-bottom: 8px; }
.svc p { margin: 0; font-size: .84rem; color: var(--muted); line-height: 1.6; }

/* ── 联系 ──────────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 44px; align-items: start; }
.contact-card { background: var(--navy); color: #DCE8F1; padding: 30px; border-radius: var(--radius); }
.contact-card h2 { color: #fff; font-size: 1.2rem; }
.contact-card__org { font-weight: 800; color: #fff; }
.contact-list { display: grid; gap: 0; margin: 18px 0; }
.contact-list > div { display: grid; grid-template-columns: 78px 1fr; gap: 12px; padding: 10px 0; border-top: 1px solid rgba(255,255,255,.14); }
.contact-list dt { font-size: .74rem; color: #9FB8C8; }
.contact-list dd { margin: 0; font-size: .9rem; }
.contact-list a { color: #fff; }
.contact-card__note { font-size: .76rem; color: #9FB8C8; margin: 0; }
.contact-form { border: 1px solid var(--line); padding: 28px; border-radius: var(--radius); }
.contact-form h2 { font-size: 1.25rem; }
.tips-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.tip { border-top: 2px solid var(--blue); background: #fff; padding: 20px; }
.tip span { font-family: var(--font-mono); font-size: .72rem; color: var(--blue); }
.tip h3 { font-size: .98rem; margin: 6px 0 6px; }
.tip p { margin: 0; font-size: .84rem; color: var(--muted); }

/* ── 搜索 ──────────────────────────────────────────────── */
.search-page { display: flex; gap: 10px; max-width: 780px; margin-bottom: 28px; }
.search-page input {
  flex: 1; padding: 14px 16px; border: 1px solid var(--line-strong);
  border-radius: var(--radius); font-size: 1.05rem;
}
.search-page input:focus { border-color: var(--blue); outline: 2px solid rgba(0,105,180,.14); }
.search-results { max-width: 980px; }
.search-hint { color: var(--muted); font-size: .92rem; }
.result-group { margin-bottom: 30px; }
.result-group h2 { font-size: .86rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); border-bottom: 1px solid var(--line); padding-bottom: 8px; }
.result-item { display: block; padding: 12px 0; border-bottom: 1px solid var(--line); text-decoration: none; color: inherit; }
.result-item:hover { color: var(--blue); }
.result-item strong { display: block; font-size: .96rem; }
.result-item span { display: block; font-size: .8rem; color: var(--muted); }
.result-item .result-meta { margin-top: 2px; color: var(--blue); }
.result-item .result-meta { font-family: var(--font-mono); font-size: .72rem; color: var(--blue); }
.result-count { font-size: .84rem; color: var(--muted); margin-bottom: 16px; }

/* ── 404 ───────────────────────────────────────────────── */
.nf { padding: 90px 0 110px; background: linear-gradient(180deg, #F7FAFC, #fff); }
.nf__inner { max-width: 640px; }
.nf h1 { font-size: clamp(2rem, 1.5rem + 2vw, 3rem); }
.nf p { color: var(--muted); }
.nf__actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 26px; }
.nf__hint { margin-top: 30px; font-size: .84rem; }

/* ── 其他小块 ──────────────────────────────────────────── */
.info-strip {
  display: flex; justify-content: space-between; align-items: center; gap: 30px;
  background: var(--navy); color: #fff; padding: 28px 32px; border-radius: var(--radius);
}
.info-strip h3 { margin: 0 0 4px; font-size: 1.1rem; }
.info-strip p { margin: 0; color: #B9CDDB; font-size: .88rem; }
.actions-row { margin-top: 26px; }
.steps { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 16px; }
.steps li { border-top: 2px solid var(--blue); padding-top: 16px; }
.steps__num { font-family: var(--font-mono); font-size: .72rem; color: var(--blue); }
.steps h3 { font-size: .95rem; margin: 6px 0; }
.steps p { font-size: .82rem; color: var(--muted); margin: 0; }
.table-wrap--desktop { overflow: visible; }

/* ── 页脚 ──────────────────────────────────────────────── */
.footer { background: var(--navy); color: #B9CDDB; padding: 54px 0 22px; font-size: .86rem; }
.footer__grid { display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr 1.25fr; gap: 34px; }
.footer__brand img { filter: brightness(0) invert(1); opacity: .92; margin-bottom: 14px; }
.footer__pos { color: #E4EEF5; font-size: .9rem; max-width: 24em; }
.footer__op { color: #8FA6B5; font-size: .78rem; max-width: 26em; }
.footer h4 { color: #fff; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 14px; }
.footer__col { display: flex; flex-direction: column; gap: 8px; }
.footer__col a { color: #C9D8E3; text-decoration: none; display: flex; justify-content: space-between; gap: 10px; }
.footer__col a:hover { color: #fff; }
.footer__col .count { font-family: var(--font-mono); font-size: .7rem; color: #8FA6B5; }
.footer__contact span { color: #C9D8E3; }
.footer__bottom {
  display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap;
  border-top: 1px solid rgba(255,255,255,.12); margin-top: 40px; padding-top: 18px;
  font-size: .74rem; color: #8FA6B5;
}
.footer__legal { display: flex; gap: 16px; }
.footer__legal a { color: #B9CDDB; }
.footer__source { color: #7F97A8; }

/* ── 响应式 ────────────────────────────────────────────── */
@media (max-width: 1180px) {
  .nav__link { padding: 8px 8px; font-size: .88rem; }
  .hero__grid { gap: 36px; }
  .cat-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .series-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .quickfind__form { grid-template-columns: 1fr 1fr 1fr 1fr; }
  .quickfind__head { grid-column: 1 / -1; }
  .quickfind .btn { grid-column: 1 / -1; }
  .quickfind__form .field--inline:nth-of-type(4) { grid-column: span 1; }
  .facts-grid, .timeline, .svc-grid, .tips-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer__grid { grid-template-columns: 1.4fr 1fr 1fr; row-gap: 30px; }
}

@media (max-width: 1024px) {
  :root { --gutter: 22px; }
  .nav { display: none; }
  .menu-btn {
    display: inline-grid; place-items: center; width: 42px; height: 42px;
    border: 1px solid var(--line); background: #fff; border-radius: var(--radius); gap: 5px;
    padding: 12px 10px;
  }
  .menu-btn span { display: block; width: 20px; height: 2px; background: var(--ink); }
  .header__actions { margin-left: auto; }
  .header.is-open .nav {
    display: flex; position: absolute; left: 0; right: 0; top: var(--header-h);
    flex-direction: column; background: #fff; border-bottom: 1px solid var(--line);
    padding: 10px var(--gutter) 18px; gap: 0; box-shadow: var(--shadow);
  }
  .header.is-open .nav__link { padding: 13px 4px; border-bottom: 1px solid var(--line); font-size: 1rem; }
  .header.is-open .nav__link.is-active::after { display: none; }
  .hero__grid { grid-template-columns: 1fr; gap: 30px; padding: 44px 0 40px; }
  .hero__visual { max-width: 560px; }
  .hero__stage { max-height: 480px; }
  .hero__stats { max-width: 620px; }
  .product__grid { grid-template-columns: 1fr; gap: 30px; }
  .product__stage { max-width: 620px; }
  .product__body { grid-template-columns: minmax(0, 1fr); }
  .product__side { position: static; grid-template-columns: 1fr 1fr; }
  .article__grid { grid-template-columns: minmax(0, 1fr); gap: 30px; }
  .article__side { position: static; grid-template-columns: 1fr 1fr; }
  .cat-hero__grid, .series-hero__grid, .about-hero__grid { grid-template-columns: 1fr; gap: 24px; }
  .cat-hero__media { order: -1; }
  .cat-hero__media img { max-height: 260px; }
  .series-hero__media { order: -1; }
  .series-hero__media img { max-height: 280px; }
  .inquiry-block, .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .split, .split--wide { grid-template-columns: 1fr; gap: 28px; }
  .selector__row--dims { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .app-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .prod-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .steps { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .cat-grid--wide { grid-template-columns: 1fr; }
  .source-grid, .app-list, .kn-grid { grid-template-columns: 1fr; }
  .kb-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .notes-grid { grid-template-columns: 1fr; }
  .cta-band__inner { flex-direction: column; align-items: flex-start; gap: 24px; }
}

@media (max-width: 768px) {
  body { font-size: 16px; }
  .topbar__tag { display: none; }
  .topbar__inner { justify-content: center; }
  .section { padding: 52px 0; }
  .section__head { flex-direction: column; align-items: flex-start; gap: 12px; margin-bottom: 24px; }
  .section__intro { max-width: none; }
  .header__cta { display: none; }
  .logo img { width: 124px; }
  .logo__cn { display: none; }
  .cat-grid, .series-grid, .series-grid--compact { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .cat-card--row { flex-direction: row; }
  .cat-card--row .cat-card__media { flex-basis: 42%; }
  .cat-card--row .cat-card__body { padding: 18px; }
  .cat-card__lead { display: none; }
  .facts-grid, .timeline, .svc-grid, .tips-grid { grid-template-columns: 1fr 1fr; }
  .app-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .app-list { grid-template-columns: 1fr; }
  .prod-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .quickfind__form { grid-template-columns: 1fr 1fr; }
  .quickfind__form .field--inline:nth-of-type(4) { grid-column: span 2; }
  .selector, .inquiry-block__form, .contact-form, .matte { padding: 20px; }
  .selector__row, .selector__row--dims { grid-template-columns: 1fr 1fr; }
  .selector__foot { flex-direction: column; align-items: flex-start; }
  .enquiry__grid { grid-template-columns: 1fr; }
  .enquiry__foot { flex-direction: column; align-items: flex-start; }
  .page-head__inner { flex-direction: column; align-items: flex-start; gap: 18px; }
  .page-head__stats { gap: 22px; }
  .product__facts { grid-template-columns: 1fr; }
  .product__side { grid-template-columns: 1fr; }
  .article__side { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
  .table-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .filter input { width: 100%; }
  .spec-table { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .spec-table .data-table thead th { position: static; box-shadow: none; }
  .data-table { min-width: 640px; }
  .data-table--specs { min-width: 0; }
  .data-table--specs th[scope="row"] { width: 52%; }
  .matte .data-table { min-width: 720px; }
  .table-wrap { overflow-x: auto; }
  .dl-hero { flex-wrap: wrap; }
  .dl-hero__action { width: 100%; }
  .dl-hero__action .btn { width: 100%; }
  .search-page { flex-direction: column; }
  .kb-stats { grid-template-columns: 1fr 1fr; }
  .info-strip { flex-direction: column; align-items: flex-start; padding: 22px; }
  .steps { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  :root { --gutter: 16px; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .hero__stats > div { border-right: 0; border-bottom: 1px solid var(--line); padding: 12px 0 10px; }
  .hero__badge { font-size: .72rem; }
  .cat-grid, .series-grid, .series-grid--compact { grid-template-columns: 1fr; }
  .cat-card--row { flex-direction: column; }
  .cat-card--row .cat-card__media { flex-basis: auto; aspect-ratio: 16/9; }
  .facts-grid, .timeline, .svc-grid, .tips-grid, .prod-grid, .app-grid, .steps { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr 1fr; }
  .quickfind__form { grid-template-columns: 1fr; }
  .quickfind__form .field--inline:nth-of-type(4) { grid-column: auto; }
  .selector__row, .selector__row--dims { grid-template-columns: 1fr; }
  .product__thumbs { grid-template-columns: 1fr 1fr; }
  .footer__grid { grid-template-columns: 1fr; }
  .cta-band__actions { flex-direction: column; width: 100%; }
  .cta-band__actions .btn { width: 100%; }
  .nf__actions .btn { width: 100%; }
  .kb-stats { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}