@import url("/static/css/tokens.css");

@font-face {
  font-family: "Barlow Semi Condensed";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("/static/fonts/barlow-500.woff2") format("woff2");
}
@font-face {
  font-family: "Barlow Semi Condensed";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("/static/fonts/barlow-600.woff2") format("woff2");
}
@font-face {
  font-family: "Barlow Semi Condensed";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("/static/fonts/barlow-700.woff2") format("woff2");
}
@font-face {
  font-family: "Source Sans 3";
  font-style: normal;
  font-weight: 300 800;
  font-display: swap;
  src: url("/static/fonts/sourcesans-400.woff2") format("woff2");
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.72;
  font-weight: 400;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; height: auto; }
a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--red); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
::selection { background: var(--blue); color: #fff; }
:focus-visible { outline: 3px solid var(--red); outline-offset: 2px; }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: .005em;
  margin: 0;
  text-wrap: balance;
  overflow-wrap: normal;
}
p { margin: 0 0 1em; text-wrap: pretty; }
ul, ol { margin: 0 0 1.2em; padding-left: 1.25em; }
li { margin: .25em 0; }
strong { font-weight: 650; }
code, .mono { font-family: var(--font-mono); }

.wrap { width: min(var(--wrap), 100% - var(--gutter) * 2); margin-inline: auto; }
.wrap--narrow { width: min(var(--wrap-narrow), 100% - var(--gutter) * 2); margin-inline: auto; }
.skip {
  position: absolute; left: 16px; top: -80px; z-index: 1000;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: var(--radius);
}
.skip:focus { top: 10px; color: #fff; }
.sr-only {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ── 顶部条与导航 ─────────────────────────────────────────── */
.topbar {
  background: var(--ink);
  color: #d9e3eb;
  font-size: 12.5px;
  letter-spacing: .045em;
  min-height: var(--topbar-h);
}
.topbar__inner {
  min-height: var(--topbar-h);
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.topbar__tag { display: flex; align-items: center; gap: 9px; min-width: 0; }
.topbar__tag::before { content: ""; width: 6px; height: 6px; background: var(--red); flex: 0 0 auto; }
.topbar__links { display: flex; gap: 22px; flex: 0 0 auto; }
.topbar__links a { color: #eaf1f6; text-decoration: none; }
.topbar__links a:hover { color: #fff; text-decoration: underline; }

.header {
  position: sticky; top: 0; z-index: 80;
  background: rgba(255, 255, 255, .98);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.header__inner {
  min-height: 76px;
  display: flex; align-items: center; gap: 30px;
}
.logo { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; text-decoration: none; }
.logo img { width: 124px; display: block; }
.logo__cn {
  border-left: 1px solid var(--line-strong); padding-left: 12px;
  color: var(--ink-soft); font-size: 13px; line-height: 1.4; letter-spacing: .08em;
}
.nav { display: flex; align-items: stretch; gap: 2px; margin-left: auto; }
.nav__link {
  display: inline-flex; align-items: center; min-height: 44px;
  padding: 0 14px; color: var(--ink-soft); font-size: 15.5px; font-weight: 600;
  text-decoration: none; position: relative; white-space: nowrap;
}
.nav__link::after {
  content: ""; position: absolute; left: 14px; right: 14px; bottom: 7px;
  height: 2px; background: var(--red); transform: scaleX(0); transform-origin: left;
  transition: transform var(--fast) var(--ease);
}
.nav__link:hover, .nav__link.is-active { color: var(--blue); }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }
.header__actions { display: flex; align-items: center; gap: 8px; flex: 0 0 auto; }
.icon-btn {
  width: 42px; height: 42px; display: inline-grid; place-items: center;
  border: 1px solid var(--line); background: #fff; color: var(--ink);
  border-radius: var(--radius); transition: border-color var(--fast), background var(--fast);
}
.icon-btn:hover { border-color: var(--blue); background: var(--blue-50); color: var(--blue); }
.icon-btn svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; }
.menu-btn {
  display: none; width: 44px; height: 42px; border: 1px solid var(--line); background: #fff;
  border-radius: var(--radius); padding: 10px 9px;
}
.menu-btn span { display: block; height: 2px; background: var(--ink); margin: 5px 0; transition: transform var(--fast); }
.menu-btn[aria-expanded="true"] span:first-child { transform: translateY(3.5px) rotate(45deg); }
.menu-btn[aria-expanded="true"] span:last-child { transform: translateY(-3.5px) rotate(-45deg); }
.searchbar {
  border-top: 1px solid var(--line);
  background: var(--mist);
}
.searchbar__inner { display: flex; gap: 8px; align-items: center; padding-block: 14px; }
.searchbar__inner > svg { width: 20px; flex: 0 0 auto; fill: none; stroke: var(--blue); stroke-width: 1.9; }
.searchbar input[type="search"] {
  flex: 1; min-width: 0; border: 1px solid var(--line-strong); background: #fff;
  padding: 11px 13px; border-radius: var(--radius); font-size: 16px;
}
.searchbar input[type="search"]:focus { border-color: var(--blue); outline: 2px solid var(--blue-100); }

/* ── 按钮与标签 ───────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  min-height: 44px; padding: 10px 18px; border: 1px solid transparent;
  border-radius: var(--radius); font-size: 15px; font-weight: 650; line-height: 1.2;
  text-decoration: none; transition: background var(--fast), color var(--fast), border-color var(--fast), transform var(--fast);
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--blue); color: #fff; border-color: var(--blue); }
.btn--primary:hover { background: var(--blue-900); border-color: var(--blue-900); color: #fff; }
.btn--red { background: var(--red); color: #fff; border-color: var(--red); }
.btn--red:hover { background: var(--red-dark); border-color: var(--red-dark); color: #fff; }
.btn--outline { background: #fff; color: var(--blue); border-color: var(--blue); }
.btn--outline:hover { background: var(--blue-50); color: var(--blue-900); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.42); }
.btn--ghost:hover { background: rgba(255,255,255,.1); color: #fff; border-color: #fff; }
.btn--sm { min-height: 36px; padding: 7px 12px; font-size: 13.5px; }
.btn--block { width: 100%; }
.btn[disabled] { opacity: .5; cursor: not-allowed; transform: none; }

.tag, .chip {
  display: inline-flex; align-items: center; gap: 6px; border-radius: 999px;
  font-size: 12.5px; font-weight: 650; letter-spacing: .02em; line-height: 1.2;
  padding: 5px 9px; background: var(--blue-50); color: var(--blue-900);
}
.tag--red { background: #fde8e8; color: var(--red-dark); }
.tag--steel { background: var(--steel-bg); color: var(--ink-soft); }
.eyebrow {
  display: flex; align-items: center; gap: 10px; color: var(--blue);
  font-size: 12.5px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase;
  margin-bottom: 13px;
}
.eyebrow::before { content: ""; width: 22px; height: 2px; background: var(--red); }
.eyebrow--light { color: #cfe0ef; }
.eyebrow--light::before { background: #fff; }

/* ── 首页 Hero ─────────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden; color: #fff;
  background:
    linear-gradient(90deg, rgba(0,31,69,.97) 0%, rgba(0,52,110,.95) 52%, rgba(0,71,155,.82) 100%),
    var(--blue-950);
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.055) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(90deg, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero__grid {
  position: relative; display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(360px, .92fr);
  gap: clamp(28px, 5vw, 70px); align-items: center;
  padding-block: clamp(52px, 7vw, 92px) clamp(34px, 5vw, 62px);
}
.hero__copy { max-width: 760px; }
.hero h1 {
  font-size: clamp(42px, 5.7vw, 78px); font-weight: 700; letter-spacing: -.018em; line-height: 1.02;
  margin-bottom: 23px;
}
.hero h1 em { font-style: normal; color: #fff; position: relative; white-space: nowrap; }
.hero h1 em::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: .05em; height: .14em;
  background: var(--red); transform: skewX(-20deg); z-index: -1;
}
.hero__lead { color: #d8e6f2; font-size: clamp(16px, 1.5vw, 19px); line-height: 1.8; max-width: 690px; margin-bottom: 25px; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 32px; }
.hero__meta { display: flex; flex-wrap: wrap; gap: 12px 24px; color: #bcd2e4; font-size: 13px; }
.hero__meta span { display: inline-flex; align-items: center; gap: 7px; }
.hero__meta span::before { content: ""; width: 5px; height: 5px; background: var(--red); }
.hero__visual { position: relative; min-height: 0; }
.hero__image {
  position: relative; margin: 26px auto 0; width: min(100%, 560px); aspect-ratio: 1.82 / 1;
  background: #fff; padding: 11px; box-shadow: var(--shadow-lg);
}
.hero__image img { width: 100%; height: 100%; object-fit: cover; }
.hero__image::before {
  content: ""; position: absolute; inset: -14px -14px 14px 14px;
  border: 1px solid rgba(141,168,188,.5); pointer-events: none;
}
.hero__sub {
  position: absolute; left: 0; bottom: 0; width: 37%; max-width: 205px; aspect-ratio: 1.24 / 1;
  background: #fff; padding: 7px; box-shadow: var(--shadow-md);
}
.hero__sub img { width: 100%; height: 100%; object-fit: cover; }
.hero__badge {
  position: absolute; right: 18px; bottom: 22px; background: var(--red); color: #fff;
  padding: 14px 17px 13px; max-width: 210px; font-family: var(--font-display);
  font-size: 21px; line-height: 1.1; box-shadow: var(--shadow-md);
}
.hero__badge small { display: block; font-family: var(--font-body); font-size: 11.5px; letter-spacing: .08em; opacity: .9; margin-bottom: 5px; }
.hero__figure {
  position: absolute; right: 20px; top: -26px; color: rgba(255,255,255,.13);
  font-family: var(--font-display); font-size: 110px; font-weight: 700; line-height: 1;
}
.hero-stats {
  position: relative; border-top: 1px solid rgba(255,255,255,.18);
  display: grid; grid-template-columns: repeat(4, 1fr);
}
.hero-stats div {
  padding: 22px 24px 25px; border-right: 1px solid rgba(255,255,255,.14);
}
.hero-stats div:first-child { padding-left: 0; }
.hero-stats div:last-child { border-right: 0; }
.hero-stats strong {
  display: block; font-family: var(--font-display); font-size: clamp(28px, 3vw, 40px);
  line-height: 1; color: #fff; margin-bottom: 7px; letter-spacing: -.01em;
}
.hero-stats span { color: #bcd2e4; font-size: 12.5px; letter-spacing: .04em; }

/* ── 首页目录条 ───────────────────────────────────────────── */
.sectorbar { background: var(--ink); color: #fff; }
.sectorbar__inner { display: flex; align-items: stretch; overflow-x: auto; scrollbar-width: thin; }
.sectorbar a {
  display: flex; align-items: center; gap: 8px; color: #dce8f2; text-decoration: none;
  padding: 13px 18px; font-size: 13.5px; white-space: nowrap; border-right: 1px solid rgba(255,255,255,.12);
}
.sectorbar a:first-child { padding-left: 0; }
.sectorbar a:hover { color: #fff; background: rgba(255,255,255,.06); }

/* ── 通用 section ────────────────────────────────────────── */
.section { padding-block: var(--section); }
.section--tight { padding-block: clamp(42px, 5vw, 68px); }
.section--mist { background: var(--mist); }
.section--ink { background: var(--ink); color: #fff; }
.section--blue { background: var(--blue); color: #fff; }
.section-head { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); gap: 30px; align-items: end; margin-bottom: 34px; }
.section-head h2 { font-size: clamp(31px, 3.9vw, 50px); font-weight: 700; letter-spacing: -.01em; }
.section-head p { color: var(--muted); margin: 0; max-width: 500px; justify-self: end; }
.section--ink .section-head p, .section--blue .section-head p { color: #c4d6e6; }
.section-head--stack { display: block; }
.section-head--stack p { max-width: 760px; margin-top: 14px; }
.section-foot { display: flex; justify-content: space-between; gap: 18px; align-items: center; margin-top: 28px; }
.link-arrow { font-size: 14.5px; font-weight: 650; text-decoration: none; display: inline-flex; gap: 7px; align-items: center; }
.link-arrow::after { content: "→"; transition: transform var(--fast); }
.link-arrow:hover::after { transform: translateX(4px); }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

/* ── 分类矩阵 ─────────────────────────────────────────────── */
.cat-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.cat-card {
  position: relative; display: flex; flex-direction: column; background: #fff; color: var(--ink);
  text-decoration: none; border: 1px solid var(--line); min-height: 100%;
  transition: border-color var(--fast), box-shadow var(--fast), transform var(--fast);
}
.cat-card:hover { border-color: var(--blue); box-shadow: var(--shadow-md); transform: translateY(-2px); color: var(--ink); }
.cat-card__image {
  aspect-ratio: 16 / 8.6; background: var(--steel-bg); overflow: hidden; position: relative;
}
.cat-card__image img { width: 100%; height: 100%; object-fit: cover; transition: transform 420ms var(--ease); }
.cat-card:hover .cat-card__image img { transform: scale(1.035); }
.cat-card__index {
  position: absolute; top: 10px; left: 10px; background: rgba(0,31,69,.88); color: #fff;
  font-family: var(--font-mono); font-size: 11px; padding: 4px 7px;
}
.cat-card__body { padding: 18px 19px 20px; display: flex; flex-direction: column; flex: 1; }
.cat-card__body h3 { font-size: 22px; line-height: 1.2; margin-bottom: 7px; }
.cat-card__body p { color: var(--muted); font-size: 14px; line-height: 1.65; margin-bottom: 18px; }
.cat-card__foot { margin-top: auto; display: flex; justify-content: space-between; align-items: center; padding-top: 12px; border-top: 1px solid var(--line); font-size: 12.5px; color: var(--muted); }
.cat-card__foot strong { color: var(--blue); font-family: var(--font-display); font-size: 21px; line-height: 1; }

/* ── 系列卡 ───────────────────────────────────────────────── */
.series-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.series-card {
  display: flex; flex-direction: column; background: #fff; border: 1px solid var(--line);
  color: var(--ink); text-decoration: none; transition: border-color var(--fast), transform var(--fast);
}
.series-card:hover { border-color: var(--blue); transform: translateY(-2px); color: var(--ink); }
.series-card__img { aspect-ratio: 16 / 10; background: #f6f8fa; overflow: hidden; }
.series-card__img img { width: 100%; height: 100%; object-fit: cover; }
.series-card__body { padding: 13px 14px 15px; border-top: 1px solid var(--line); }
.series-card__body h3 { font-size: 17.5px; line-height: 1.25; }
.series-card__body span { display: block; color: var(--muted); font-size: 12.5px; margin-top: 5px; }
.series-card__body b { color: var(--blue); font-weight: 700; }

/* ── 应用卡 ───────────────────────────────────────────────── */
.app-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.app-card {
  position: relative; min-height: 280px; display: flex; flex-direction: column; justify-content: flex-end;
  color: #fff; text-decoration: none; background: var(--ink); overflow: hidden; isolation: isolate;
}
.app-card img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -2; transition: transform 500ms var(--ease); }
.app-card::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(180deg, rgba(0,31,69,.08), rgba(0,31,69,.92) 82%); }
.app-card:hover { color: #fff; }
.app-card:hover img { transform: scale(1.04); }
.app-card__body { padding: 24px 22px; }
.app-card__body span { color: #bdd2e3; font-size: 11.5px; letter-spacing: .1em; font-weight: 700; }
.app-card__body h3 { font-size: 27px; margin: 6px 0 7px; }
.app-card__body p { color: #d6e3ee; font-size: 13.5px; margin: 0; max-width: 380px; }
.app-card--wide { grid-column: span 2; }

/* ── 数据/事实 ────────────────────────────────────────────── */
.fact-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: 24px 22px 26px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: #fff;
}
.fact b { display: block; font-family: var(--font-display); font-size: 34px; line-height: 1; color: var(--blue); margin-bottom: 10px; }
.fact strong { display: block; font-size: 15px; margin-bottom: 4px; }
.fact p { font-size: 13px; color: var(--muted); line-height: 1.65; margin: 0; }
.reason-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.reason {
  background: #fff; border: 1px solid var(--line); padding: 23px 24px; display: grid;
  grid-template-columns: 44px minmax(0, 1fr); gap: 15px;
}
.reason__no { font-family: var(--font-display); font-size: 30px; color: var(--blue-100); line-height: 1; font-weight: 700; }
.reason h3 { font-size: 20px; margin-bottom: 6px; }
.reason p { color: var(--muted); font-size: 14px; line-height: 1.65; margin: 0; }
.source-note { font-size: 12.5px; color: var(--muted); line-height: 1.6; }
.source-note a { color: var(--muted); text-decoration: underline; }
.source-note a:hover { color: var(--blue); }

/* ── 首页资料条 ───────────────────────────────────────────── */
.tool-band { display: grid; grid-template-columns: 1.2fr .8fr; gap: 0; border: 1px solid rgba(255,255,255,.2); }
.tool-band__main { padding: clamp(26px, 4vw, 45px); border-right: 1px solid rgba(255,255,255,.2); }
.tool-band__main h2 { font-size: clamp(30px, 3.4vw, 44px); margin-bottom: 13px; }
.tool-band__main p { color: #c7d9e8; max-width: 700px; }
.tool-band__side { padding: clamp(22px, 3vw, 34px); display: flex; flex-direction: column; justify-content: center; gap: 9px; }
.tool-band__side a { color: #fff; text-decoration: none; padding: 13px 14px; border: 1px solid rgba(255,255,255,.22); display: flex; justify-content: space-between; gap: 10px; font-size: 13.5px; }
.tool-band__side a:hover { background: rgba(255,255,255,.1); }

/* ── 知识卡 ───────────────────────────────────────────────── */
.k-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.k-card { border: 1px solid var(--line); padding: 22px 22px 20px; background: #fff; text-decoration: none; color: var(--ink); display: flex; flex-direction: column; transition: border-color var(--fast), transform var(--fast); }
.k-card:hover { border-color: var(--blue); transform: translateY(-2px); color: var(--ink); }
.k-card__tag { color: var(--red); font-size: 11.5px; letter-spacing: .1em; font-weight: 700; margin-bottom: 10px; }
.k-card h3 { font-size: 22px; line-height: 1.28; margin-bottom: 10px; }
.k-card p { color: var(--muted); font-size: 13.5px; line-height: 1.68; margin-bottom: 18px; }
.k-card span { margin-top: auto; color: var(--blue); font-size: 13px; font-weight: 650; }

/* ── CTA 带 ───────────────────────────────────────────────── */
.cta-band { background: var(--blue); color: #fff; position: relative; overflow: hidden; }
.cta-band::after { content: "W"; position: absolute; right: 2%; bottom: -30%; font-family: var(--font-display); font-size: 380px; font-weight: 700; color: rgba(255,255,255,.045); line-height: 1; }
.cta-band__inner { position: relative; display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: center; padding-block: clamp(36px, 5vw, 62px); }
.cta-band h2 { font-size: clamp(28px, 3.6vw, 46px); margin-bottom: 10px; }
.cta-band p { color: #cddded; margin: 0; max-width: 620px; }
.cta-band__actions { display: flex; gap: 10px; justify-content: flex-end; flex-wrap: wrap; }

/* ── 面包屑与页头 ────────────────────────────────────────── */
.breadcrumb { padding: 16px 0 0; font-size: 12.5px; color: var(--muted); }
.breadcrumb ol { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px 0; }
.breadcrumb li { display: inline-flex; align-items: center; }
.breadcrumb li:not(:last-child)::after { content: "/"; color: var(--steel-light); margin: 0 8px; }
.breadcrumb a { color: var(--muted); text-decoration: none; }
.breadcrumb a:hover { color: var(--blue); text-decoration: underline; }
.breadcrumb [aria-current="page"] { color: var(--ink-soft); }
.page-hero { background: var(--mist); border-bottom: 1px solid var(--line); }
.page-hero__inner { padding-block: 25px clamp(30px, 4vw, 48px); display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; align-items: end; }
.page-hero h1 { font-size: clamp(34px, 4.5vw, 58px); font-weight: 700; letter-spacing: -.012em; line-height: 1.06; margin-bottom: 10px; }
.page-hero__lead { color: var(--muted); max-width: 760px; margin: 0; font-size: 16px; }
.page-hero__aside { text-align: right; color: var(--muted); font-size: 12.5px; line-height: 1.6; }
.page-hero__count { display: block; font-family: var(--font-display); font-size: 46px; line-height: 1; color: var(--blue); font-weight: 700; margin-bottom: 4px; }

/* ── 页面内容 / 富文本 ───────────────────────────────────── */
.prose { max-width: 780px; }
.prose h2 { font-size: clamp(28px, 3vw, 38px); margin: 1.4em 0 .6em; }
.prose h3 { font-size: 24px; margin: 1.5em 0 .45em; }
.prose h4 { font-size: 19px; margin: 1.3em 0 .4em; }
.prose p, .prose li { font-size: 16.5px; line-height: 1.82; }
.prose ul, .prose ol { margin-bottom: 1.3em; }
.prose table { width: 100%; border-collapse: collapse; font-size: 14px; margin: 20px 0 26px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 9px 11px; vertical-align: top; text-align: left; }
.prose th { background: var(--mist); font-weight: 650; }
.prose blockquote { margin: 24px 0; padding: 16px 20px; border-left: 4px solid var(--red); background: var(--blue-50); color: var(--ink-soft); }
.prose code { background: var(--mist); padding: 2px 5px; font-size: .9em; }
.callout { border: 1px solid var(--line); background: var(--mist); padding: 17px 19px; margin: 22px 0; font-size: 14px; line-height: 1.7; color: var(--ink-soft); }
.callout strong { color: var(--ink); }
.two-col { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: clamp(28px, 5vw, 64px); align-items: start; }

/* ── 产品表格与筛选 ──────────────────────────────────────── */
.table-tools {
  display: flex; flex-wrap: wrap; gap: 9px 12px; align-items: center;
  padding: 14px 0 16px; border-top: 1px solid var(--line);
}
.table-tools__search { flex: 1 1 250px; min-width: 220px; }
.table-tools input[type="search"], .table-tools select {
  width: 100%; min-height: 42px; border: 1px solid var(--line-strong); background: #fff;
  padding: 8px 11px; border-radius: var(--radius); font-size: 14px;
}
.table-tools select { flex: 0 1 210px; width: auto; min-width: 160px; }
.table-tools__count { color: var(--muted); font-size: 12.5px; margin-left: auto; }
.table-wrap { border: 1px solid var(--line); background: #fff; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.model-table { width: 100%; border-collapse: collapse; font-size: 13.5px; line-height: 1.5; }
.model-table caption { text-align: left; padding: 13px 15px; font-size: 13px; color: var(--muted); border-bottom: 1px solid var(--line); }
.model-table th {
  text-align: left; font-size: 11.5px; letter-spacing: .045em; color: var(--muted);
  background: var(--mist); border-bottom: 1px solid var(--line-strong);
  padding: 10px 12px; font-weight: 700; white-space: nowrap;
}
.model-table td { border-bottom: 1px solid var(--line); padding: 10px 12px; vertical-align: top; }
.model-table tr:last-child td { border-bottom: 0; }
.model-table tr:hover td { background: #f8fbfd; }
.model-table .m-model { font-weight: 650; min-width: 150px; overflow-wrap: anywhere; }
.model-table .m-model a { color: var(--ink); text-decoration: none; }
.model-table .m-model a:hover { color: var(--blue); text-decoration: underline; }
.model-table .m-sku { font-family: var(--font-mono); font-size: 12.5px; color: var(--muted); white-space: nowrap; }
.model-table .m-desc { color: var(--muted); min-width: 190px; max-width: 280px; }
.model-table .m-param { color: var(--ink-soft); min-width: 160px; }
.model-table .m-cat { color: var(--muted); min-width: 130px; }
.model-table .m-dl { white-space: nowrap; }
.pager { display: flex; gap: 5px; align-items: center; justify-content: center; padding: 18px 0 0; flex-wrap: wrap; }
.pager button { min-width: 34px; height: 34px; border: 1px solid var(--line); background: #fff; font-size: 13px; border-radius: var(--radius); }
.pager button.is-current { background: var(--blue); color: #fff; border-color: var(--blue); }
.pager button:hover:not(.is-current):not([disabled]) { border-color: var(--blue); color: var(--blue); }
.pager button[disabled] { opacity: .4; cursor: not-allowed; }
.pager__info { color: var(--muted); font-size: 12.5px; margin-left: 9px; }
.empty { padding: 36px 18px; text-align: center; color: var(--muted); border: 1px dashed var(--line-strong); background: #fff; }

/* ── 产品详情 ─────────────────────────────────────────────── */
.product-head { padding-block: 8px 30px; }
.product-head__grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(28px, 4vw, 54px); align-items: start; }
.product-visual { background: var(--mist); border: 1px solid var(--line); padding: 18px; position: relative; }
.product-visual__inner { background: #fff; border: 1px solid var(--line); aspect-ratio: 1 / 1; display: grid; place-items: center; overflow: hidden; }
.product-visual__inner img { width: 100%; height: 100%; object-fit: contain; }
.product-visual__note { font-size: 11.5px; color: var(--muted); margin: 11px 0 0; line-height: 1.5; }
.product-visual__stamp { position: absolute; right: 28px; top: 28px; background: var(--blue); color: #fff; font-size: 10.5px; letter-spacing: .08em; padding: 4px 7px; }
.product-title { font-size: clamp(36px, 4.3vw, 56px); line-height: 1.04; letter-spacing: -.015em; overflow-wrap: anywhere; margin-bottom: 10px; }
.product-sub { font-size: 17px; color: var(--muted); margin-bottom: 20px; line-height: 1.6; }
.product-sku { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; padding: 13px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 18px; }
.product-sku__label { font-size: 11.5px; color: var(--muted); letter-spacing: .06em; }
.product-sku__value { font-family: var(--font-mono); font-size: 17px; font-weight: 700; letter-spacing: .02em; }
.product-actions { display: flex; flex-wrap: wrap; gap: 9px; margin-bottom: 19px; }
.product-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-bottom: 18px; }
.product-facts div { background: #fff; padding: 11px 13px; min-width: 0; }
.product-facts span { display: block; font-size: 11.5px; color: var(--muted); margin-bottom: 3px; }
.product-facts strong { font-size: 14.5px; line-height: 1.45; display: block; overflow-wrap: anywhere; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.product-layout { display: grid; grid-template-columns: minmax(0, 1fr) 330px; gap: clamp(26px, 4vw, 48px); align-items: start; }
.product-main > section { margin-bottom: 38px; }
.product-main h2 { font-size: 27px; margin-bottom: 14px; }
.product-aside { position: sticky; top: calc(var(--nav-h) + 20px); display: flex; flex-direction: column; gap: 12px; }
.aside-card { border: 1px solid var(--line); background: #fff; padding: 20px; }
.aside-card h3 { font-size: 19px; margin-bottom: 9px; }
.aside-card p { font-size: 13px; color: var(--muted); line-height: 1.65; }
.aside-card .btn { margin-top: 5px; }
.aside-card--blue { background: var(--blue); color: #fff; border-color: var(--blue); }
.aside-card--blue h3 { color: #fff; }
.aside-card--blue p { color: #d4e3f0; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; border: 1px solid var(--line); }
.spec-table th, .spec-table td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; text-align: left; }
.spec-table th { background: var(--mist); color: var(--muted); width: 38%; font-weight: 600; font-size: 12.5px; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }
.spec-table td { font-weight: 500; overflow-wrap: anywhere; }
.spec-src { display: block; font-size: 10.5px; color: var(--muted-light); margin-top: 3px; font-weight: 400; }
.doc-list { display: flex; flex-direction: column; border-top: 1px solid var(--line); }
.doc-list a { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 11px 2px; border-bottom: 1px solid var(--line); font-size: 13.5px; text-decoration: none; color: var(--ink-soft); }
.doc-list a:hover { color: var(--blue); }
.doc-list span { color: var(--muted); font-size: 11.5px; white-space: nowrap; }
.product-description { font-size: 16px; line-height: 1.82; }
.product-description p:last-child { margin-bottom: 0; }
.related-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.related-card { border: 1px solid var(--line); text-decoration: none; color: var(--ink); padding: 12px; display: block; background: #fff; min-width: 0; }
.related-card:hover { border-color: var(--blue); color: var(--ink); }
.related-card img, .related-card .sprite { width: 100%; aspect-ratio: 1; object-fit: contain; background-color: var(--mist); margin-bottom: 9px; }
.related-card strong { display: block; font-size: 13px; line-height: 1.4; overflow-wrap: anywhere; }
.related-card span { display: block; font-family: var(--font-mono); font-size: 10.5px; color: var(--muted); margin-top: 3px; overflow-wrap: anywhere; }

/* ── 查询/警告 ───────────────────────────────────────────── */
.query-note { border-left: 3px solid var(--red); background: #fff7f7; padding: 14px 16px; font-size: 13.5px; color: var(--ink-soft); }
.kb-box { border: 1px solid var(--blue-100); background: var(--blue-50); padding: 17px 18px; font-size: 13px; color: var(--ink-soft); }
.kb-box h3 { font-size: 17px; margin-bottom: 7px; color: var(--blue-900); }
.kb-box p:last-child { margin-bottom: 0; }

/* ── 系列/分类概览 ────────────────────────────────────────── */
.overview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.overview-card { display: grid; grid-template-columns: 100px minmax(0, 1fr) auto; gap: 15px; align-items: center; border: 1px solid var(--line); background: #fff; padding: 10px 14px 10px 10px; text-decoration: none; color: var(--ink); }
.overview-card:hover { border-color: var(--blue); color: var(--ink); }
.overview-card img { width: 100px; aspect-ratio: 1.2; object-fit: cover; background: var(--mist); }
.overview-card h3 { font-size: 18px; line-height: 1.3; }
.overview-card p { font-size: 12.5px; color: var(--muted); margin: 4px 0 0; }
.overview-card b { font-family: var(--font-display); font-size: 24px; color: var(--blue); }
.tax-section { padding-block: 29px; border-top: 1px solid var(--line); }
.tax-section > h2 { font-size: 26px; margin-bottom: 13px; }
.link-list { display: flex; flex-wrap: wrap; gap: 7px; }
.link-list a { display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--line); background: #fff; padding: 6px 10px; text-decoration: none; font-size: 13px; color: var(--ink-soft); }
.link-list a:hover { border-color: var(--blue); color: var(--blue); }
.link-list small { color: var(--muted); font-family: var(--font-mono); }
.series-head { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: clamp(24px, 4vw, 48px); align-items: start; padding-block: 25px 35px; }
.series-head__img { border: 1px solid var(--line); background: #fff; padding: 9px; }
.series-head__img img { width: 100%; aspect-ratio: 1; object-fit: contain; background: var(--mist); }
.series-head h1 { font-size: clamp(34px, 4.4vw, 56px); margin-bottom: 10px; overflow-wrap: anywhere; }
.series-head .product-sub { margin-bottom: 15px; }

/* ── 下载中心 ─────────────────────────────────────────────── */
.dl-hero { display: grid; grid-template-columns: minmax(0, 1.2fr) minmax(260px, .8fr); gap: 25px; align-items: center; }
.dl-feature { border: 1px solid var(--line); background: #fff; padding: 22px; display: grid; grid-template-columns: 120px 1fr; gap: 15px; }
.dl-feature img { width: 120px; aspect-ratio: 1; object-fit: cover; }
.dl-feature h2 { font-size: 23px; }
.dl-feature p { font-size: 13px; color: var(--muted); }
.dl-feature .btn { margin-top: 5px; }
.dl-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.dl-card { border: 1px solid var(--line); padding: 14px 15px; background: #fff; display: flex; flex-direction: column; gap: 7px; }
.dl-card h3 { font-size: 16px; }
.dl-card span { font-size: 11.5px; color: var(--muted); }
.dl-card a { margin-top: auto; font-size: 12.5px; font-weight: 650; text-decoration: none; }
.dl-card a::after { content: " ↓"; }

/* ── 应用页 ───────────────────────────────────────────────── */
.app-hero { position: relative; background: var(--blue-950); color: #fff; overflow: hidden; }
.app-hero img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .42; }
.app-hero__inner { position: relative; padding-block: clamp(48px, 7vw, 92px); max-width: 800px; }
.app-hero h1 { font-size: clamp(40px, 5vw, 66px); margin-bottom: 14px; }
.app-hero p { color: #d5e3ef; max-width: 690px; font-size: 17px; }
.app-points { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.app-points div { background: #fff; padding: 19px 20px; }
.app-points strong { display: block; color: var(--blue); font-family: var(--font-display); font-size: 21px; margin-bottom: 5px; }
.app-points p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.65; }

/* ── FAQ ──────────────────────────────────────────────────── */
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); background: #fff; }
.faq-list summary { list-style: none; cursor: pointer; padding: 17px 36px 17px 0; font-weight: 650; font-size: 16px; position: relative; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { content: "+"; position: absolute; right: 4px; top: 13px; font-size: 25px; font-weight: 300; color: var(--blue); }
.faq-list details[open] summary::after { content: "−"; }
.faq-list .faq-a { padding: 0 0 18px; color: var(--ink-soft); font-size: 14.5px; line-height: 1.8; }
.faq-list .faq-a p:last-child { margin-bottom: 0; }

/* ── 搜索页 ───────────────────────────────────────────────── */
.search-page { min-height: 60vh; }
.search-box { display: flex; gap: 8px; margin: 0 0 17px; }
.search-box input { flex: 1; min-width: 0; min-height: 52px; border: 1px solid var(--line-strong); padding: 10px 15px; font-size: 17px; border-radius: var(--radius); }
.search-box input:focus { border-color: var(--blue); outline: 2px solid var(--blue-100); }
.search-filters { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 24px; }
.search-filters button, .filter-chip { border: 1px solid var(--line); background: #fff; padding: 6px 10px; border-radius: 999px; font-size: 12.5px; }
.search-filters button.is-active, .filter-chip.is-active { background: var(--blue); color: #fff; border-color: var(--blue); }
.result-list { border-top: 1px solid var(--line); }
.result { display: grid; grid-template-columns: 100px minmax(0, 1fr) auto; gap: 18px; align-items: center; padding: 14px 2px; border-bottom: 1px solid var(--line); text-decoration: none; color: var(--ink); }
.result:hover { background: #f8fbfd; color: var(--ink); }
.result__type { font-size: 11px; color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }
.result h3 { font-size: 18px; line-height: 1.3; margin-bottom: 3px; }
.result p { font-size: 12.5px; color: var(--muted); margin: 0; line-height: 1.55; }
.result__sku { font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); white-space: nowrap; }
.search-hint { color: var(--muted); font-size: 13px; }
mark { background: #fff2a8; color: inherit; padding: 0 1px; }

/* ── 表单 ─────────────────────────────────────────────────── */
.form { display: grid; gap: 13px; }
.form__row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 13px; }
.form label { font-size: 13px; font-weight: 650; display: block; margin-bottom: 5px; }
.form label .req { color: var(--red); }
.form input, .form textarea, .form select {
  width: 100%; min-height: 44px; border: 1px solid var(--line-strong); border-radius: var(--radius);
  padding: 9px 11px; background: #fff; font-size: 16px;
}
.form textarea { min-height: 120px; resize: vertical; }
.form input:focus, .form textarea:focus, .form select:focus { border-color: var(--blue); outline: 2px solid var(--blue-100); }
.form__note { font-size: 11.5px; color: var(--muted); line-height: 1.55; }
.form__status { font-size: 13px; padding: 10px 12px; border-radius: var(--radius); display: none; }
.form__status.is-ok { display: block; background: #e8f6ed; color: #145b2c; }
.form__status.is-err { display: block; background: #fdecec; color: #8d1111; }
.hp { position: absolute !important; left: -9999px; opacity: 0; height: 0; width: 0; overflow: hidden; }
.contact-grid { display: grid; grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr); gap: clamp(28px, 5vw, 60px); align-items: start; }
.contact-card { border: 1px solid var(--line); background: #fff; padding: 24px; }
.contact-card h2 { font-size: 26px; margin-bottom: 12px; }
.contact-line { display: grid; grid-template-columns: 84px 1fr; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.contact-line:last-child { border-bottom: 0; }
.contact-line span { color: var(--muted); font-size: 12.5px; }
.contact-line a, .contact-line strong { overflow-wrap: anywhere; }

/* ── 页脚 ─────────────────────────────────────────────────── */
.footer { background: var(--ink); color: #b9c9d5; font-size: 13px; }
.footer__top { display: grid; grid-template-columns: 1.5fr .8fr .8fr 1fr; gap: 34px; padding-block: 48px 36px; }
.footer__brand img { width: 126px; background: #fff; padding: 8px 10px; margin-bottom: 14px; }
.footer__brand p { color: #c8d7e2; line-height: 1.7; max-width: 380px; }
.footer__operator { color: #8fa5b6 !important; font-size: 11.5px; line-height: 1.65; margin-top: 8px; }
.footer h4 { color: #fff; font-family: var(--font-body); font-size: 12px; letter-spacing: .1em; margin-bottom: 13px; font-weight: 700; }
.footer__col a, .footer__col span { display: block; color: #b9c9d5; text-decoration: none; padding: 4px 0; }
.footer__col a:hover { color: #fff; text-decoration: underline; }
.footer__bottom { border-top: 1px solid rgba(255,255,255,.12); display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 22px; padding-block: 17px 24px; color: #8399aa; font-size: 11px; }
.footer__legal { display: flex; gap: 16px; }
.footer__legal a { color: #a9bccb; text-decoration: none; }
.footer__legal a:hover { color: #fff; }

/* ── 浮动询价 ─────────────────────────────────────────────── */
.quick-inquiry {
  position: fixed; right: 18px; bottom: 18px; z-index: 70; display: none; align-items: center; gap: 12px;
  background: var(--ink); color: #fff; padding: 10px 11px 10px 15px; box-shadow: var(--shadow-md);
  font-size: 13px; max-width: calc(100vw - 36px);
}
.quick-inquiry.is-visible { display: flex; }
.quick-inquiry a { white-space: nowrap; }
.quick-inquiry button { background: none; border: 0; color: #a9bccb; font-size: 20px; line-height: 1; padding: 4px 5px; }

/* ── 占位图 ───────────────────────────────────────────────── */
.ph {
  width: 100%; height: 100%; display: grid; place-items: center; min-height: 100px;
  background: repeating-linear-gradient(-45deg, #f2f6f9 0, #f2f6f9 10px, #e9eff4 10px, #e9eff4 20px);
  color: var(--steel); font-family: var(--font-display); font-size: 24px; font-weight: 700;
}

/* ── 响应式 ───────────────────────────────────────────────── */
@media (max-width: 1120px) {
  .header__inner { gap: 18px; }
  .nav__link { padding-inline: 9px; font-size: 14.5px; }
  .hero__grid { grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); }
  .series-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .product-layout { grid-template-columns: minmax(0, 1fr) 300px; }
}
@media (max-width: 960px) {
  :root { --gutter: 24px; }
  .topbar__links { display: none; }
  .header__inner { min-height: 68px; }
  .nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; border-bottom: 1px solid var(--line); padding: 10px 24px 18px;
    flex-direction: column; align-items: stretch; gap: 0; box-shadow: var(--shadow-md);
  }
  .nav.is-open { display: flex; }
  .nav__link { padding: 12px 4px; min-height: 46px; border-bottom: 1px solid var(--line); }
  .nav__link::after { display: none; }
  .menu-btn { display: block; }
  .header__cta { display: none; }
  .hero__grid { grid-template-columns: 1fr; gap: 40px; padding-block: 50px 42px; }
  .hero__visual { min-height: 0; max-width: 560px; width: 100%; }
  .hero__image { aspect-ratio: 1.65 / 1; }
  .hero__figure { right: 4px; top: -18px; font-size: 76px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats div { border-bottom: 1px solid rgba(255,255,255,.14); }
  .hero-stats div:nth-child(2) { border-right: 0; }
  .hero-stats div:nth-child(3), .hero-stats div:nth-child(4) { border-bottom: 0; }
  .cat-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .app-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .app-card--wide { grid-column: auto; }
  .fact-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .section-head { grid-template-columns: 1fr; gap: 12px; }
  .section-head p { justify-self: start; }
  .tool-band { grid-template-columns: 1fr; }
  .tool-band__main { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.2); }
  .cta-band__inner { grid-template-columns: 1fr; }
  .cta-band__actions { justify-content: flex-start; }
  .page-hero__inner { grid-template-columns: 1fr; }
  .page-hero__aside { text-align: left; }
  .product-head__grid { grid-template-columns: 1fr; }
  .product-visual { max-width: 520px; }
  .product-layout { grid-template-columns: 1fr; }
  .product-aside { position: static; }
  .two-col { grid-template-columns: 1fr; }
  .overview-grid { grid-template-columns: 1fr; }
  .series-head { grid-template-columns: 220px minmax(0, 1fr); }
  .dl-hero { grid-template-columns: 1fr; }
  .dl-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer__top { grid-template-columns: 1.3fr 1fr 1fr; }
  .footer__col:last-child { grid-column: span 3; }
  .reason-grid { grid-template-columns: 1fr; }
  .k-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  :root { --gutter: 18px; --section: 56px; }
  body { font-size: 16px; }
  .topbar { font-size: 11.5px; }
  .topbar__tag { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .logo img { width: 105px; }
  .logo__cn { display: none; }
  .header__inner { min-height: 62px; gap: 10px; }
  .header__actions { margin-left: auto; }
  .icon-btn { width: 40px; height: 40px; }
  .hero h1 { font-size: clamp(38px, 11vw, 54px); }
  .hero__lead { font-size: 15.5px; }
  .hero__actions .btn { flex: 1 1 auto; }
  .hero__image { aspect-ratio: 1.55 / 1; padding: 8px; margin-top: 18px; }
  .hero__sub { display: none; }
  .hero__badge { right: 8px; bottom: 8px; padding: 11px 13px; font-size: 17px; }
  .hero-stats div { padding: 17px 12px 19px; }
  .hero-stats div:first-child { padding-left: 0; }
  .hero-stats strong { font-size: 29px; }
  .sectorbar a { padding: 11px 13px; font-size: 12.5px; }
  .cat-grid, .app-grid, .k-grid { grid-template-columns: 1fr; }
  .series-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .series-card__body h3 { font-size: 15.5px; }
  .fact-grid { grid-template-columns: 1fr 1fr; }
  .fact b { font-size: 29px; }
  .fact { padding: 18px 15px 20px; }
  .section-head h2 { font-size: 31px; }
  .section-foot { align-items: flex-start; flex-direction: column; }
  .hero__meta { gap: 8px 14px; }
  .app-card { min-height: 240px; }
  .app-card__body h3 { font-size: 24px; }
  .product-facts { grid-template-columns: 1fr; }
  .product-title { font-size: 34px; }
  .related-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .series-head { grid-template-columns: 1fr; }
  .series-head__img { max-width: 280px; }
  .dl-grid { grid-template-columns: 1fr; }
  .dl-feature { grid-template-columns: 84px 1fr; }
  .dl-feature img { width: 84px; }
  .app-points { grid-template-columns: 1fr; }
  .form__row { grid-template-columns: 1fr; }
  .table-tools__count { margin-left: 0; width: 100%; }
  .table-wrap { border-left: 0; border-right: 0; }
  .result { grid-template-columns: 70px minmax(0, 1fr); }
  .result__sku { grid-column: 2; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer__brand { grid-column: span 2; }
  .footer__col:last-child { grid-column: span 2; }
  .footer__bottom { flex-direction: column; }
  .quick-inquiry { left: 12px; right: 12px; bottom: 12px; justify-content: space-between; }
  .quick-inquiry span.q-label { display: none; }
}
@media (max-width: 380px) {
  .series-grid { grid-template-columns: 1fr; }
  .fact-grid { grid-template-columns: 1fr; }
  .hero__actions { flex-direction: column; align-items: stretch; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .001ms !important; animation-duration: .001ms !important; }
}

/* 打印：型号表与产品页 */
@media print {
  .topbar, .header, .footer, .quick-inquiry, .cta-band, .product-aside, .table-tools, .pager { display: none !important; }
  body { font-size: 12pt; }
  .model-table { font-size: 8pt; }
  a { color: inherit; text-decoration: none; }
}

/* ── 产品图精灵（全量图片本地化，单文件 64 格）─────────────── */
.sprite {
  width: 100%; height: 100%; display: block; background-color: #fff;
  background-image: var(--sprite); background-repeat: no-repeat;
  background-size: 800% 800%;
  background-position: calc(var(--col) * 14.285714%) calc(var(--row) * 14.285714%);
}
.sprite--contain { background-color: #f7f9fb; }

/* 窄屏（≤520px）进一步保证中文文本容器不窄于 16em */
@media (max-width: 520px) {
  .series-grid,
  .fact-grid { grid-template-columns: 1fr; }
  .related-grid { grid-template-columns: minmax(0, 1fr); }
  .footer__top { grid-template-columns: 1fr; }
  .footer__brand,
  .footer__col:last-child { grid-column: auto; }
  .footer__col { min-width: 0; }
  .footer__legal { flex-wrap: wrap; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .table-tools select { width: 100%; flex-basis: 100%; }
}