/* ==========================================================================
   东莞聚汇自动化设备有限公司 — 站点样式
   ========================================================================== */

:root {
  --ink-900: #111820;
  --ink-800: #1a2431;
  --ink-700: #233246;
  --ink-600: #3d5266;
  --ink-500: #61748a;
  --ink-400: #8b9bad;
  --ink-300: #b8c2cc;
  --ink-200: #dae1e8;
  --ink-100: #eef1f5;
  --ink-050: #f7f9fb;

  --brand-900: #0b1f33;
  --brand-800: #123a5c;
  --brand-700: #1a4f78;
  --brand-600: #22618f;
  --brand-500: #2b74a3;
  --brand-400: #4d8fb8;
  --brand-200: #a9c4d9;
  --brand-100: #dce7f0;
  --brand-050: #eef3f8;

  --signal-600: #b9720a;
  --signal-500: #d97b1f;
  --signal-400: #e8973a;
  --signal-100: #faf0e2;

  --paper: #ffffff;
  --paper-alt: var(--ink-050);

  --font-sans: "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-num: "DIN Alternate", "Bahnschrift", "Oswald", "Arial Narrow", sans-serif;

  --shell: 1240px;
  --gutter: clamp(20px, 4vw, 48px);
  --radius-s: 4px;
  --radius-m: 10px;
  --radius-l: 20px;

  --shadow-s: 0 1px 2px rgba(13, 27, 38, .06), 0 2px 8px rgba(13, 27, 38, .04);
  --shadow-m: 0 12px 32px -12px rgba(13, 27, 38, .22);
  --shadow-l: 0 32px 64px -28px rgba(6, 43, 63, .38);

  --ease: cubic-bezier(.22, .61, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  overflow-wrap: break-word;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-700);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, figure { margin: 0; }

:focus-visible {
  outline: 2px solid var(--brand-500);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translate(-50%, -140%);
  z-index: 999;
  padding: 12px 20px;
  background: var(--brand-800);
  color: #fff;
  transition: transform .2s var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

.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;
}

/* ---------- 布局 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(64px, 9vw, 128px); }
.section--tight { padding-block: clamp(48px, 6vw, 80px); }
.section--dark { background: var(--ink-900); color: var(--ink-200); }
.section--alt { background: var(--paper-alt); }

/* ---------- 眉标 / 标题 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--brand-600);
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--signal-500);
}
.section--dark .eyebrow { color: var(--brand-200); }

.h-display {
  font-size: clamp(30px, 4.2vw, 54px);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink-900);
}

.h-section {
  font-size: clamp(26px, 3.2vw, 40px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink-900);
}
.section--dark .h-section { color: #fff; }

.h-card {
  font-size: 18px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--ink-900);
}

.lede {
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--ink-600);
  max-width: 62ch;
}
.section--dark .lede { color: var(--ink-300); }

.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: clamp(24px, 5vw, 72px);
  align-items: end;
  margin-bottom: clamp(36px, 5vw, 64px);
}
.section-head--center {
  grid-template-columns: minmax(0, 1fr);
  justify-items: center;
  text-align: center;
}
.section-head--center .lede { margin-inline: auto; }
.section-head__title { display: grid; gap: 16px; }
.section-head__aside { display: grid; gap: 20px; justify-items: start; }

@media (max-width: 880px) {
  .section-head { grid-template-columns: minmax(0, 1fr); align-items: start; }
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 22px;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: background-color .25s var(--ease), color .25s var(--ease),
              border-color .25s var(--ease), transform .25s var(--ease);
}
.btn svg { flex: none; }
.btn--solid {
  background: var(--brand-700);
  color: #fff;
}
.btn--solid:hover { background: var(--brand-800); transform: translateY(-2px); }
.btn--ghost {
  border-color: var(--ink-300);
  color: var(--ink-800);
}
.btn--ghost:hover { border-color: var(--brand-600); color: var(--brand-700); }
.btn--on-dark {
  border-color: rgba(255, 255, 255, .35);
  color: #fff;
}
.btn--on-dark:hover { background: rgba(255, 255, 255, .1); border-color: #fff; }
.btn--signal {
  background: var(--signal-500);
  color: var(--ink-900);
}
.btn--signal:hover { background: var(--signal-400); transform: translateY(-2px); }

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  color: var(--brand-700);
  border-bottom: 1px solid transparent;
  transition: border-color .25s var(--ease), gap .25s var(--ease);
}
.link-more:hover { border-color: var(--brand-700); gap: 12px; }

/* ---------- 顶栏 ---------- */
.topbar {
  background: var(--ink-900);
  color: var(--ink-300);
  font-size: 13px;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 42px;
}
.topbar__list { display: flex; align-items: center; gap: 26px; }
.topbar__list li { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.topbar__list svg { flex: none; opacity: .7; }
.topbar__list a:hover { color: #fff; }
@media (max-width: 1080px) {
  .topbar__list { gap: 18px; }
  .topbar__list li { min-width: 0; overflow: hidden; text-overflow: ellipsis; }
}
@media (max-width: 880px) {
  .topbar__inner { justify-content: center; }
  .topbar__list li:not(:first-child) { display: none; }
}

/* ---------- 导航 ---------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(150%) blur(12px);
  border-bottom: 1px solid var(--ink-200);
  transition: box-shadow .3s var(--ease);
}
.masthead.is-stuck { box-shadow: 0 8px 24px -16px rgba(13, 27, 38, .4); }
.masthead__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; min-width: 0; }
.brand__mark {
  width: 42px; height: 42px;
  flex: none;
  border-radius: 8px;
  background: linear-gradient(150deg, var(--brand-600), var(--brand-800));
  display: grid;
  place-items: center;
  color: #fff;
  font-family: var(--font-num);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .04em;
}
.brand__text { display: grid; line-height: 1.25; min-width: 0; }
.brand__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: .01em;
  white-space: nowrap;
}
.brand__sub {
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--ink-500);
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav { display: flex; align-items: center; gap: 1px; flex: 1 1 auto; justify-content: center; min-width: 0; }
.nav > li { position: relative; flex: 0 0 auto; }
.nav > li > a {
  display: block;
  position: relative;
  padding: 9px 12px;
  font-size: 14.5px;
  font-weight: 600;
  white-space: nowrap;
  color: var(--ink-700);
  border-radius: var(--radius-s);
  transition: color .2s var(--ease), background-color .2s var(--ease);
}
.nav > li > a:hover { color: var(--brand-700); background: var(--brand-050); }
.nav > li > a[aria-current="page"] { color: var(--brand-700); }
.nav > li > a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: var(--signal-500);
}

.nav__panel {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translate(-50%, 8px);
  min-width: 240px;
  padding: 10px;
  background: #fff;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-m);
  opacity: 0;
  visibility: hidden;
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.nav > li:hover .nav__panel,
.nav > li:focus-within .nav__panel {
  opacity: 1;
  visibility: visible;
  transform: translate(-50%, 0);
}
.nav__panel a {
  display: block;
  padding: 9px 12px;
  font-size: 14px;
  color: var(--ink-600);
  border-radius: var(--radius-s);
}
.nav__panel a:hover { background: var(--brand-050); color: var(--brand-700); }

.nav-caret {
  display: none;
  margin-left: 8px;
  color: var(--ink-400);
  transition: transform .25s var(--ease);
}
.nav-scrim {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: rgba(13, 27, 38, .45);
  opacity: 0;
  visibility: hidden;
  transition: opacity .25s var(--ease), visibility .25s;
}
.nav-scrim.is-on { opacity: 1; visibility: visible; }
body.nav-locked { overflow: hidden; }
.nav__cta { display: none; }

.masthead__cta { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.masthead__tel {
  display: grid;
  line-height: 1.3;
  text-align: right;
  white-space: nowrap;
}
.masthead__tel span { font-size: 11px; letter-spacing: .14em; color: var(--ink-400); }
.masthead__tel strong {
  font-family: var(--font-num);
  font-size: 18px;
  white-space: nowrap;
  color: var(--brand-800);
  letter-spacing: .02em;
}
@media (max-width: 1140px) { .masthead__tel { display: none; } }

.nav-toggle {
  display: none;
  width: 44px; height: 44px;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-s);
  background: #fff;
  position: relative;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  position: absolute;
  left: 50%;
  width: 20px;
  height: 2px;
  background: var(--ink-800);
  transform: translateX(-50%);
  transition: transform .25s var(--ease), opacity .2s var(--ease);
}
.nav-toggle span { top: 21px; }
.nav-toggle span::before { content: ""; top: -6px; }
.nav-toggle span::after { content: ""; top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: translateX(-50%) translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { transform: translateX(-50%) translateY(-6px) rotate(-45deg); }

@media (max-width: 1023px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px var(--gutter) 24px;
    background: #fff;
    border-bottom: 1px solid var(--ink-200);
    box-shadow: var(--shadow-m);
    max-height: calc(100vh - 120px);
    overflow-y: auto;
  }
  .nav.is-open { display: flex; z-index: 101; }
  .nav > li > a { padding: 14px 4px; border-bottom: 1px solid var(--ink-100); border-radius: 0; }
  .nav > li > a[aria-current="page"]::after { display: none; }
  .nav__panel,
  .nav > li:hover .nav__panel,
  .nav > li:focus-within .nav__panel {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    opacity: 1;
    visibility: visible;
    min-width: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
    padding: 4px 0 10px 14px;
    display: none;
  }
  .nav > li.is-open .nav__panel { display: block; }
  .masthead__cta .btn { display: none; }
  .nav-caret { display: inline-flex; }
  .nav > li.has-sub.is-open > a .nav-caret { transform: rotate(180deg); }
  .nav__cta { display: block; margin-top: 18px; padding-top: 4px; }
  .nav__cta .btn,
  .nav__cta a.btn--solid {
    width: 100%;
    justify-content: center;
    color: #fff;
    padding: 15px 26px;
    border-bottom: 0;
  }
  .nav__cta a.btn--solid:hover { color: #fff; }
  .nav-scrim { display: block; }
}
@media (min-width: 1024px) { .nav-scrim { display: none; } }

/* ---------- 首页首屏 ---------- */
.hero {
  position: relative;
  background: var(--ink-900);
  color: #fff;
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
  background: #0a1a26;
}
.hero__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: .5;
}
.hero__scrim {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(100deg, rgba(6, 43, 63, .96) 0%, rgba(6, 43, 63, .82) 42%, rgba(6, 43, 63, .35) 100%),
    linear-gradient(0deg, rgba(6, 43, 63, .6), transparent 55%);
}
.hero__grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(168, 220, 238, .08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(168, 220, 238, .08) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(90deg, #000, transparent 78%);
}

.hero__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(32px, 5vw, 80px);
  align-items: center;
  padding-block: clamp(56px, 8vw, 108px);
}
.hero__copy { display: grid; gap: 24px; max-width: 640px; }
.hero__title {
  font-size: clamp(32px, 5vw, 62px);
  line-height: 1.12;
  font-weight: 700;
  letter-spacing: -.02em;
}
.hero__title em {
  font-style: normal;
  color: var(--signal-400);
}
.hero__lede {
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.9;
  color: rgba(255, 255, 255, .78);
  max-width: 54ch;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; }

.hero__aside { position: relative; }
.hero__aside-frame {
  position: relative;
  margin: 0;
  border: 1px solid rgba(169, 196, 217, .22);
  border-radius: var(--radius-s);
  overflow: hidden;
  background: #0b1f33;
  box-shadow: 0 34px 64px -32px rgba(0, 0, 0, .85);
}
.hero__aside-frame img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; display: block; }
.hero__aside-frame::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 46%;
  background: linear-gradient(to top, rgba(4, 24, 36, .92), transparent);
  pointer-events: none;
}

@media (max-width: 980px) {
  .hero__inner { grid-template-columns: minmax(0, 1fr); }
  .hero__aside-frame img { aspect-ratio: 16 / 9; }
}
@media (max-width: 700px) {
  .hero__inner { padding-block: clamp(48px, 9vw, 72px); }
  .hero__copy { gap: 20px; }
  .hero__aside { display: none; }
  .hero__actions { width: 100%; }
  .hero__actions .btn { flex: 1 1 46%; justify-content: center; }
}
@media (max-width: 560px) {
}

/* ---------- 业务能力条 ---------- */
.capability-strip {
  position: relative;
  z-index: 3;
  margin-top: -1px;
  background: var(--brand-800);
  color: #fff;
  border-bottom: 1px solid var(--ink-200);
}
.capability-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: rgba(255, 255, 255, .16);
}
.capability-strip__item {
  background: var(--brand-800);
  padding: 26px clamp(18px, 2.4vw, 32px);
  display: flex;
  align-items: center;
  gap: 14px;
}
.capability-strip__item svg { color: var(--signal-400); flex: none; }
.capability-strip__item h3 { font-size: 16px; font-weight: 600; }
.capability-strip__item p { font-size: 14px; line-height: 1.7; color: rgba(255, 255, 255, .72); }
@media (max-width: 900px) { .capability-strip__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .capability-strip__grid { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 关于我们 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: clamp(32px, 5vw, 76px);
  align-items: start;
}
@media (max-width: 900px) { .about-grid { grid-template-columns: minmax(0, 1fr); } }

.factsheet {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  background: var(--ink-200);
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.factsheet__row {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  background: #fff;
}
.factsheet__row dt {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-400);
}
.factsheet__row dd {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-900);
  line-height: 1.7;
}
.factsheet__row--wide { grid-column: 1 / -1; }
.factsheet__row--wide dd {
  font-size: 14px;
  font-weight: 400;
  color: var(--ink-600);
}
@media (max-width: 880px) { .factsheet { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .factsheet { grid-template-columns: minmax(0, 1fr); } }

.about-copy { display: grid; gap: 22px; }
.about-copy p { color: var(--ink-600); line-height: 1.95; }

.about-plates {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 8px;
}
.plate {
  padding: 24px;
  background: #fff;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-s);
}
.plate h3 { font-size: 16px; font-weight: 700; color: var(--ink-900); margin-bottom: 8px; }
.plate p { font-size: 14px; color: var(--ink-500); line-height: 1.75; }
@media (max-width: 560px) { .about-plates { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 硬指标平铺 ---------- */
.hard-numbers {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 2px solid var(--ink-900);
  border-bottom: 1px solid var(--ink-200);
  margin-bottom: clamp(36px, 4.5vw, 60px);
}
.hard-numbers li {
  padding: 26px 20px 24px 0;
  display: grid;
  gap: 8px;
  align-content: start;
  border-right: 1px solid var(--ink-200);
}
.hard-numbers li:last-child { border-right: 0; }
.hard-numbers li + li { padding-left: 20px; }
.hard-numbers b {
  font-family: var(--font-num);
  font-size: clamp(26px, 2.8vw, 38px);
  line-height: 1;
  font-weight: 700;
  color: var(--ink-900);
  letter-spacing: -.01em;
}
.hard-numbers b sup { font-size: .42em; color: var(--brand-700); margin-left: 2px; }
.hard-numbers span { font-size: 13px; color: var(--ink-500); }
@media (max-width: 1080px) { .hard-numbers { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .hard-numbers li:nth-child(3) { border-right: 0; }
  .hard-numbers li:nth-child(n+4) { border-top: 1px solid var(--ink-200); } }
@media (max-width: 620px) { .hard-numbers { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hard-numbers li:nth-child(3) { border-right: 1px solid var(--ink-200); }
  .hard-numbers li:nth-child(2n) { border-right: 0; } }

/* ---------- 图文分栏 ---------- */
.about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}
.about-split__text { display: grid; gap: 18px; }
.about-split__text p { color: var(--ink-600); line-height: 1.9; }
.about-split__art {
  margin: 0;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--brand-900);
}
.about-split__art img { width: 100%; height: 100%; min-height: 240px; object-fit: cover; display: block; }
@media (max-width: 880px) { .about-split { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 无框标签 ---------- */
.plain-tags { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 4px; }
.plain-tags li {
  position: relative;
  padding-left: 14px;
  font-size: 14px;
  color: var(--ink-600);
}
.plain-tags li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 5px;
  height: 5px;
  background: var(--signal-500);
}

/* ---------- 产品 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}
.filter-bar button {
  padding: 9px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-600);
  background: #fff;
  border: 1px solid var(--ink-200);
  border-radius: 3px;
  transition: all .22s var(--ease);
}
.filter-bar button:hover { border-color: var(--brand-400); color: var(--brand-700); }
.filter-bar button[aria-pressed="true"] {
  background: var(--brand-700);
  border-color: var(--brand-700);
  color: #fff;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
@media (max-width: 980px) { .product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .product-grid { grid-template-columns: minmax(0, 1fr); } }

.product-card[hidden] { display: none; }
.product-card {
  display: grid;
  grid-template-rows: auto 1fr;
  background: #fff;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), border-color .3s var(--ease);
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-m);
  border-color: var(--brand-200);
}
.product-card__media { position: relative; background: #0e1b27; overflow: hidden; }
.product-card__media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  display: block;
}
.product-card__cat {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 600;
  color: #fff;
  background: rgba(11, 31, 51, .82);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(169, 196, 217, .28);
  border-radius: 2px;
}
.product-card__body { padding: 20px 20px 22px; display: grid; gap: 10px; align-content: start; grid-template-rows: auto 1fr auto; }
.product-card__body p { font-size: 14px; color: var(--ink-500); line-height: 1.75; }
.product-card__spec {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 6px;
}
.product-card__spec li {
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-600);
  background: var(--ink-050);
  border: 1px solid var(--ink-200);
  border-radius: 2px;
  padding: 4px 9px;
  white-space: nowrap;
}

/* ---------- 解决方案（横向速览） ---------- */
.solution-rail {
  --rail-line: var(--ink-200);
  --rail-title: var(--ink-900);
  --rail-text: var(--ink-500);
  --rail-no: var(--signal-600);
  --rail-tag: var(--brand-700);
  --rail-tag-line: var(--brand-200);
  --rail-hover: var(--brand-050);
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--rail-line);
  border-left: 1px solid var(--rail-line);
}
.section--dark .solution-rail {
  --rail-line: rgba(168, 220, 238, .28);
  --rail-title: #fff;
  --rail-text: var(--ink-300);
  --rail-no: var(--signal-400);
  --rail-tag: var(--brand-200);
  --rail-tag-line: rgba(168, 220, 238, .3);
  --rail-hover: rgba(255, 255, 255, .06);
}
.solution-rail li {
  border-right: 1px solid var(--rail-line);
  border-bottom: 1px solid var(--rail-line);
}
.solution-rail a {
  display: grid;
  gap: 14px;
  padding: 30px clamp(18px, 2.2vw, 28px) 34px;
  height: 100%;
  transition: background-color .3s var(--ease);
}
.solution-rail a:hover { background: var(--rail-hover); }
.solution-rail__no {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--rail-no);
}
.solution-rail h3 { font-size: 18px; font-weight: 700; color: var(--rail-title); }
.solution-rail p { font-size: 14px; line-height: 1.8; color: var(--rail-text); }
.solution-rail__tags { display: flex; flex-wrap: wrap; gap: 6px; }
.solution-rail__tags span {
  font-size: 12px;
  color: var(--rail-tag);
  border: 1px solid var(--rail-tag-line);
  border-radius: 2px;
  padding: 2px 10px;
}
@media (max-width: 980px) { .solution-rail { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .solution-rail { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 解决方案详情块 ---------- */
.solution-block {
  display: grid;
  gap: 24px;
  padding-block: clamp(30px, 3.6vw, 48px);
  border-bottom: 1px solid var(--ink-200);
}
.solution-block:first-child { padding-top: 0; }
.solution-block:last-child { border-bottom: 0; padding-bottom: 0; }
.solution-block__head {
  display: flex;
  align-items: baseline;
  gap: 18px;
}
.solution-block__no {
  font-family: var(--font-num);
  font-size: 15px;
  letter-spacing: .16em;
  color: var(--signal-600);
  border-bottom: 2px solid var(--signal-500);
  padding-bottom: 3px;
}
.solution-block__art {
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--brand-900);
  box-shadow: var(--shadow-s);
}
.solution-block__art img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  object-fit: cover;
  display: block;
}
.solution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.solution-tags li {
  font-size: 13px;
  font-weight: 600;
  color: var(--brand-700);
  background: var(--brand-050);
  border: 1px solid var(--brand-200);
  border-radius: 2px;
  padding: 5px 14px;
}
@media (max-width: 700px) {
  .solution-block__head { flex-direction: column; gap: 8px; }
}

/* ---------- 数据带 ---------- */
.metric-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(20px, 3vw, 40px);
}
.metric-band li { display: grid; gap: 8px; }
.metric-band b {
  font-family: var(--font-num);
  font-size: clamp(34px, 4.4vw, 52px);
  line-height: 1;
  font-weight: 700;
  color: var(--brand-800);
}
.metric-band b sup { font-size: .45em; color: var(--signal-600); margin-left: 2px; }
.metric-band span { font-size: 14px; color: var(--ink-500); }
.section--dark .metric-band b { color: #fff; }
.section--dark .metric-band span { color: var(--ink-400); }
@media (max-width: 820px) { .metric-band { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- 新闻 ---------- */
.news-list { border-top: 1px solid var(--ink-200); }
.news-item {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr) auto;
  gap: clamp(16px, 3vw, 40px);
  align-items: center;
  padding: 26px 0;
  border-bottom: 1px solid var(--ink-200);
  transition: padding-left .3s var(--ease), background-color .3s var(--ease);
}
.news-item:hover { padding-left: 14px; background: var(--brand-050); }
.news-item time {
  font-family: var(--font-num);
  font-size: 15px;
  color: var(--ink-400);
  letter-spacing: .04em;
}
.news-item h3 { font-size: 17px; font-weight: 700; color: var(--ink-900); margin-bottom: 6px; }
.news-item p { font-size: 14px; color: var(--ink-500); line-height: 1.7; }
.news-item__arrow { color: var(--ink-300); transition: color .25s var(--ease), transform .25s var(--ease); }
.news-item:hover .news-item__arrow { color: var(--brand-600); transform: translateX(4px); }
@media (max-width: 700px) {
  .news-item { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .news-item__arrow { display: none; }
}

/* ---------- 客户 ---------- */
.client-band {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  border-top: 1px solid var(--ink-200);
  border-left: 1px solid var(--ink-200);
}
.client-band li {
  border-right: 1px solid var(--ink-200);
  border-bottom: 1px solid var(--ink-200);
  display: grid;
  place-items: center;
  padding: 26px 12px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-400);
  letter-spacing: .04em;
  transition: color .25s var(--ease), background-color .25s var(--ease);
}
.client-band li:hover { color: var(--brand-700); background: var(--brand-050); }
@media (max-width: 900px) { .client-band { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 520px) { .client-band { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* ---------- CTA ---------- */
.cta-band {
  position: relative;
  background: var(--brand-800);
  color: #fff;
  overflow: hidden;
}
.cta-band::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 420px;
  height: 420px;
  border: 60px solid rgba(168, 220, 238, .1);
  border-radius: 50%;
}
.cta-band__inner {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: clamp(24px, 4vw, 64px);
  align-items: center;
  padding-block: clamp(48px, 6vw, 76px);
}
.cta-band h2 { font-size: clamp(24px, 3vw, 34px); font-weight: 700; line-height: 1.3; }
.cta-band p { color: rgba(255, 255, 255, .76); margin-top: 10px; max-width: 56ch; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 12px; }
@media (max-width: 820px) { .cta-band__inner { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 页脚 ---------- */
.site-footer { background: var(--ink-900); color: var(--ink-400); font-size: 14px; }
.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) repeat(2, minmax(0, 1fr)) minmax(0, 1.2fr);
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(48px, 6vw, 72px);
}
.site-footer h3 {
  font-size: 15px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.site-footer p { line-height: 1.85; }
.site-footer__about { display: grid; gap: 18px; max-width: 46ch; }
.site-footer__list { display: grid; gap: 11px; }
.site-footer__list a:hover { color: #fff; }
.site-footer__contact { display: grid; gap: 14px; }
.site-footer__contact strong {
  font-family: var(--font-num);
  font-size: 24px;
  color: #fff;
  letter-spacing: .02em;
}
.site-footer__brand { display: flex; align-items: center; gap: 12px; }
.site-footer__brand .brand__mark { background: rgba(255, 255, 255, .12); }
.site-footer__brand .brand__name { color: #fff; }
.site-footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding-block: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  justify-content: space-between;
  font-size: 13px;
  color: var(--ink-500);
}
@media (max-width: 980px) { .site-footer__top { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .site-footer__top { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 内页头部 ---------- */
.page-head {
  position: relative;
  background: var(--ink-900);
  color: #fff;
  overflow: hidden;
}
.page-head__media { position: absolute; inset: 0; }
.page-head__media img { width: 100%; height: 100%; object-fit: cover; object-position: 72% center; opacity: .34; }
.page-head__scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(6, 43, 63, .95), rgba(6, 43, 63, .55));
}
.page-head__inner {
  position: relative;
  z-index: 2;
  padding-block: clamp(56px, 7vw, 96px);
  display: grid;
  gap: 18px;
  max-width: 780px;
}
.page-head h1 {
  font-size: clamp(28px, 3.6vw, 46px);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -.015em;
}
.page-head p { color: rgba(255, 255, 255, .74); font-size: clamp(15px, 1.4vw, 17px); line-height: 1.85; }

.breadcrumb { display: flex; flex-wrap: wrap; gap: 10px; font-size: 13px; color: var(--ink-400); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 10px; color: rgba(255, 255, 255, .3); }
.breadcrumb li[aria-current] { color: rgba(255, 255, 255, .8); }

@media (max-width: 700px) {
  .page-head__media img { object-position: 82% center; opacity: .26; }
  .page-head__scrim { background: linear-gradient(120deg, rgba(6, 43, 63, .97) 30%, rgba(6, 43, 63, .82) 100%); }
  .page-head__inner { padding-block: clamp(40px, 11vw, 64px); gap: 14px; }
}

/* ---------- 通用内容块 ---------- */
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}
@media (max-width: 900px) { .two-col { grid-template-columns: minmax(0, 1fr); } }

.prose { display: grid; gap: 20px; }
.prose p { color: var(--ink-600); line-height: 1.95; }
.prose h3 { font-size: 19px; font-weight: 700; color: var(--ink-900); }

.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.spec-table caption { text-align: left; font-size: 13px; color: var(--ink-400); padding-bottom: 12px; }
.spec-table th, .spec-table td {
  padding: 13px 16px;
  text-align: left;
  border-bottom: 1px solid var(--ink-200);
}
.spec-table thead th {
  background: var(--ink-050);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink-700);
  letter-spacing: .04em;
}
.spec-table tbody th { font-weight: 600; color: var(--ink-800); width: 34%; }
.spec-table td { color: var(--ink-600); }

.timeline-min { display: grid; gap: 0; border-left: 2px solid var(--ink-200); }
.timeline-min li {
  position: relative;
  padding: 0 0 30px 28px;
}
.timeline-min li::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 8px;
  width: 14px; height: 14px;
  background: #fff;
  border: 3px solid var(--brand-500);
  border-radius: 50%;
}
.timeline-min time {
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--brand-700);
  letter-spacing: .06em;
}
.timeline-min h3 { font-size: 17px; font-weight: 700; color: var(--ink-900); margin: 6px 0; }
.timeline-min p { font-size: 14px; color: var(--ink-500); line-height: 1.75; }

.detail-list { display: grid; gap: 14px; }
.detail-list li {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 12px;
  font-size: 15px;
  color: var(--ink-600);
  line-height: 1.8;
}
.detail-list svg { color: var(--signal-500); margin-top: 5px; }

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}
@media (max-width: 900px) { .card-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 600px) { .card-grid-3 { grid-template-columns: minmax(0, 1fr); } }

.info-card {
  padding: 28px 26px;
  background: #fff;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  display: grid;
  gap: 12px;
  align-content: start;
  transition: border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.info-card:hover { border-color: var(--brand-200); box-shadow: var(--shadow-s); }
.info-card__icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--radius-s);
  background: var(--brand-050);
  color: var(--brand-700);
}
.info-card h3 { font-size: 17px; font-weight: 700; color: var(--ink-900); }
.info-card p { font-size: 14px; color: var(--ink-500); line-height: 1.8; }

/* ---------- 表单 ---------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.form-grid .field--full { grid-column: 1 / -1; }
.field { display: grid; gap: 8px; }
.field label { font-size: 14px; font-weight: 600; color: var(--ink-700); }
.field label .req { color: #c0392b; }
.field input, .field select, .field textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: inherit;
  font-size: 15px;
  color: var(--ink-800);
  background: #fff;
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-s);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { min-height: 132px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none;
  border-color: var(--brand-500);
  box-shadow: 0 0 0 3px rgba(18, 132, 170, .14);
}
.form-note { font-size: 13px; color: var(--ink-400); }
@media (max-width: 640px) { .form-grid { grid-template-columns: minmax(0, 1fr); } }

/* ---------- 联系信息 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}
@media (max-width: 900px) { .contact-grid { grid-template-columns: minmax(0, 1fr); } }

.contact-lines { display: grid; gap: 26px; }
.contact-line { display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 14px; }
.contact-line svg { color: var(--brand-600); margin-top: 4px; }
.contact-line h3 { font-size: 14px; font-weight: 600; color: var(--ink-400); letter-spacing: .06em; margin-bottom: 4px; }
.contact-line p { font-size: 16px; color: var(--ink-800); line-height: 1.7; }
.contact-line a:hover { color: var(--brand-700); }

.map-frame {
  border: 1px solid var(--ink-200);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--ink-050);
}
.map-frame__body {
  aspect-ratio: 16 / 11;
  display: grid;
  place-items: center;
  gap: 10px;
  text-align: center;
  padding: 24px;
  background:
    linear-gradient(var(--ink-100) 1px, transparent 1px) 0 0 / 40px 40px,
    linear-gradient(90deg, var(--ink-100) 1px, transparent 1px) 0 0 / 40px 40px,
    var(--paper-alt);
  color: var(--ink-500);
}
.map-frame__body svg { color: var(--brand-600); }
.map-frame__body strong { font-size: 15px; color: var(--ink-800); display: block; }
.map-frame__body span { font-size: 13px; }

/* ---------- 动效 ---------- */
html.has-motion .reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
html.has-motion .reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, html.has-motion .reveal { opacity: 1; transform: none; transition: none; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ---------- 浮动联系 ---------- */
.floaty {
  position: fixed;
  right: 18px;
  bottom: 24px;
  z-index: 90;
  display: grid;
  gap: 8px;
}
.floaty a, .floaty button {
  width: 46px; height: 46px;
  border: 1px solid rgba(255, 255, 255, .16);
  display: grid;
  place-items: center;
  background: var(--brand-800);
  color: #fff;
  border: 0;
  border-radius: var(--radius-s);
  box-shadow: var(--shadow-m);
  transition: background-color .25s var(--ease), transform .25s var(--ease);
}
.floaty a:hover, .floaty button:hover { background: var(--brand-600); transform: translateY(-2px); }
.floaty__top { opacity: 0; visibility: hidden; }
.floaty__top.is-on { opacity: 1; visibility: visible; }
@media (max-width: 760px) { .floaty { display: none; } }

@media print {
  .masthead, .floaty, .topbar, .cta-band { display: none; }
}