/* ==========================================================================
   CARE ELECTRONICS — Design System
   吴江凯莱电子 / Wujiang Care Electronics
   ========================================================================== */

/* ---------- 1. Tokens ---------- */
:root {
  --ink: #0e1821;
  --ink-soft: #1c2c3a;
  --ink-3: #33475a;
  --muted: #5d6f7c;
  --muted-2: #8496a2;
  --paper: #fbfbf9;
  --paper-2: #f3f4f1;
  --white: #ffffff;
  --line: rgba(14, 24, 33, 0.11);
  --line-strong: rgba(14, 24, 33, 0.22);
  --accent: #1652f0;
  --accent-ink: #0d3ec4;
  --accent-wash: #eaefff;
  /* 字体一律走本地自托管（assets/fonts），保证 Windows / macOS 渲染一致 */
  --sans: "Inter Variable", "Noto Sans SC Variable", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --maxw: 1260px;
  --gutter: 40px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: 0.005em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

::selection { background: var(--accent); color: #fff; }

/* ---------- 3. Layout ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: 104px 0; border-top: 1px solid var(--line); }
.section--tight { padding: 72px 0; }
.section--flush { border-top: 0; }
.section--dark { background: var(--ink); color: #eef2f5; border-top-color: rgba(255, 255, 255, 0.1); }
.section--dark .eyebrow { color: #a3b6c4; }
.section--paper2 { background: var(--paper-2); }

.grid { display: grid; gap: 28px; }
.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

/* ---------- 4. Type ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  font-weight: 500;
  text-transform: uppercase;
  color: #3f525f;
  display: flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
  flex: none;
}

.display {
  font-size: clamp(34px, 4.4vw, 62px);
  line-height: 1.08;
  letter-spacing: -0.028em;
  font-weight: 500;
}

h2.title {
  font-size: clamp(26px, 2.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 500;
  margin-top: 18px;
}

.lede {
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.75;
  max-width: 62ch;
}
.section--dark .lede { color: #a9bac7; }

.mono { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.1em; text-transform: uppercase; }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 48px;
  margin-bottom: 56px;
}
.section-head .lede { margin-top: 20px; }
.section-head__aside { flex: none; padding-bottom: 4px; }

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border: 1px solid var(--ink);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  background: var(--ink);
  color: #fff;
  transition: background 0.35s var(--ease), color 0.35s var(--ease),
    border-color 0.35s var(--ease), transform 0.35s var(--ease);
}
.btn:hover { background: var(--accent); border-color: var(--accent); transform: translateY(-1px); }
.btn svg { width: 14px; height: 14px; transition: transform 0.35s var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.btn--ghost:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.btn--light { background: #fff; color: var(--ink); border-color: #fff; }
.btn--light:hover { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn--sm { padding: 10px 16px; font-size: 12.5px; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 3px;
  transition: color 0.3s, border-color 0.3s;
}
.link-arrow svg { width: 13px; height: 13px; transition: transform 0.3s var(--ease); }
.link-arrow:hover { color: var(--accent); border-color: var(--accent); }
.link-arrow:hover svg { transform: translateX(3px); }

/* ---------- 6. Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(251, 251, 249, 0.82);
  backdrop-filter: saturate(150%) blur(16px);
  -webkit-backdrop-filter: saturate(150%) blur(16px);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s;
}
.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 var(--gutter);
  height: 74px;
  display: flex;
  align-items: center;
  gap: 34px;
}

.brand { display: flex; align-items: center; gap: 12px; flex: none; }
.brand__logo {
  height: 26px;
  width: auto;
  flex: none;
  display: block;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.16em;
}
.brand__sub {
  font-size: 11px;
  letter-spacing: 0.03em;
  color: #33475a;
  font-family: var(--sans);
  font-weight: 500;
  margin-top: 2px;
}

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a {
  padding: 9px 14px;
  font-size: 13.5px;
  color: var(--ink-3);
  position: relative;
  transition: color 0.25s;
}
.nav a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease);
}
.nav a:hover { color: var(--ink); }
.nav a:hover::after,
.nav a.is-active::after { transform: scaleX(1); }
.nav a.is-active { color: var(--ink); }

.header-tools { display: flex; align-items: center; gap: 14px; flex: none; }
.header-cta { flex: none; }
.lang { flex: none; }
.nav { flex-wrap: nowrap; }

.lang {
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  padding: 2px;
  background: rgba(255, 255, 255, 0.6);
}
.lang button {
  padding: 5px 11px;
  font-size: 11.5px;
  font-family: var(--mono);
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: background 0.25s, color 0.25s;
}
.lang button.is-on { background: var(--ink); color: #fff; }

.nav-toggle { display: none; }

/* ---------- 7. Hero ---------- */
.hero { position: relative; overflow: hidden; border-bottom: 1px solid var(--line); }
.hero__grain {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(14, 24, 33, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(14, 24, 33, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(120% 95% at 78% 18%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(120% 95% at 78% 18%, #000 0%, transparent 72%);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 56px;
  align-items: center;
  padding: 92px 0 96px;
}
.hero h1 {
  font-size: clamp(38px, 4.5vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.032em;
  font-weight: 500;
  margin: 22px 0 0;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}
.hero__sub {
  margin-top: 26px;
  color: var(--muted);
  font-size: 16.5px;
  line-height: 1.78;
  max-width: 50ch;
}
.hero__actions { display: flex; gap: 12px; margin-top: 40px; flex-wrap: wrap; }

.hero__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 46px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.09em;
  font-weight: 500;
  color: #3f525f;
  text-transform: uppercase;
  flex-wrap: wrap;
}
.hero__meta span.dot { width: 3px; height: 3px; background: #8b9ca8; border-radius: 50%; }

.hero__visual { position: relative; }
.hero__frame {
  position: relative;
  background: #f2f3f0;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.hero__frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__frame--video { aspect-ratio: 16 / 11; }
.hero__frame--video video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: #0a121a;
}
/* 全屏时完整显示画面，不裁切 */
.hero__frame--video video:fullscreen,
.hero__frame--video video:-webkit-full-screen {
  object-fit: contain;
  background: #000;
  width: 100vw;
  height: 100vh;
}
/* 全屏按钮 */
.hero__fs {
  position: absolute;
  right: 22px;
  top: 22px;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 2px;
  background: rgba(10, 18, 26, 0.56);
  color: #fff;
  cursor: pointer;
  z-index: 4;
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
  box-shadow: 0 8px 22px -12px rgba(6, 14, 22, 0.75);
}
.hero__fs svg { width: 16px; height: 16px; display: block; }
.hero__fs:hover { background: rgba(10, 18, 26, 0.8); border-color: #fff; }
.hero__fs:active { transform: scale(0.94); }
.hero__fs:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
.hero__frame::before,
.hero__frame::after {
  content: "";
  position: absolute;
  width: 13px;
  height: 13px;
  border: 1px solid var(--accent);
}
.hero__frame::before { top: 13px; left: 13px; border-right: 0; border-bottom: 0; }
.hero__frame::after { bottom: 13px; right: 13px; border-left: 0; border-top: 0; }


/* ---------- 8. Stats ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
}
.stat {
  padding: 34px 30px 34px 0;
  border-right: 1px solid var(--line);
}
.stat:last-child { border-right: 0; }
.stat__num {
  font-size: clamp(30px, 3vw, 42px);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.stat__num small { font-size: 15px; letter-spacing: 0; color: var(--muted); font-weight: 400; }
.stat__label { margin-top: 12px; font-size: 12.5px; color: var(--muted); letter-spacing: 0.02em; }

/* ---------- 9. Split blocks ---------- */
.split { display: grid; grid-template-columns: 0.92fr 1.08fr; gap: 80px; align-items: start; }
.split--rev { grid-template-columns: 1.08fr 0.92fr; }

.philo { display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); }
.philo__item { background: var(--paper); padding: 34px 32px; position: relative; }
.philo__char {
  font-size: 40px;
  line-height: 1;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.philo__char span { color: var(--accent); }
.philo__title { margin-top: 16px; font-size: 15px; font-weight: 600; letter-spacing: 0.01em; }
.philo__body { margin-top: 10px; font-size: 14px; color: var(--muted); line-height: 1.75; }
.philo__idx {
  position: absolute;
  top: 22px;
  right: 24px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted-2);
  letter-spacing: 0.1em;
}

/* ---------- 10. Category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.cat {
  display: block;
  border: 1px solid var(--line);
  background: #fff;
  overflow: hidden;
  transition: border-color 0.4s, transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.cat:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
  box-shadow: 0 26px 50px -40px rgba(14, 24, 33, 0.6);
}
.cat__media {
  aspect-ratio: 16 / 11;
  background: linear-gradient(180deg, #f7f7f5, #eff0ed);
  overflow: hidden;
  position: relative;
}
.cat__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.cat:hover .cat__media img { transform: scale(1.045); }
.cat__body { padding: 22px 24px 24px; display: flex; align-items: flex-start; gap: 14px; }
.cat__body h3 { font-size: 15.5px; font-weight: 600; letter-spacing: 0.01em; }
.cat__body p { font-size: 13px; color: var(--muted-2); margin-top: 6px; line-height: 1.6; }
.cat__idx {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted-2);
  padding-top: 3px;
  flex: none;
}

/* ---------- 11. Capability list ---------- */
.cap-list { border-top: 1px solid var(--line); }
.cap-row {
  display: grid;
  grid-template-columns: 64px 1.05fr 1.4fr;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.cap-row__idx { font-family: var(--mono); font-size: 11px; color: var(--muted-2); letter-spacing: 0.1em; }
.cap-row__name { font-size: 17px; font-weight: 500; letter-spacing: -0.01em; }
.cap-row__desc { font-size: 14px; color: var(--muted); line-height: 1.75; }
.section--dark .cap-list { border-top-color: rgba(255, 255, 255, 0.14); }
.section--dark .cap-row { border-bottom-color: rgba(255, 255, 255, 0.14); }
.section--dark .cap-row__desc { color: #a9bac7; }
.section--dark .cap-row__idx { color: #6f8494; }

/* ---------- 12. Quality cards ---------- */
.qcard {
  border: 1px solid rgba(255, 255, 255, 0.16);
  padding: 28px 26px;
  background: rgba(255, 255, 255, 0.03);
  transition: background 0.4s, border-color 0.4s;
}
.qcard:hover { background: rgba(255, 255, 255, 0.06); border-color: rgba(255, 255, 255, 0.3); }
.qcard__badge {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: #7fb0ff;
  text-transform: uppercase;
}
.qcard h3 { margin-top: 14px; font-size: 17px; font-weight: 500; letter-spacing: 0.01em; color: #fff; }
.qcard p { margin-top: 10px; font-size: 13.5px; line-height: 1.75; color: #9db0be; }

.flow { display: flex; flex-wrap: wrap; gap: 0; margin-top: 46px; border-top: 1px solid rgba(255, 255, 255, 0.14); }
.flow__step {
  padding: 18px 26px 18px 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: #c3d2dd;
  display: flex;
  align-items: center;
  gap: 10px;
  text-transform: uppercase;
}
.flow__step::after { content: "→"; color: #4d6273; margin-left: 12px; font-size: 12px; }
.flow__step:last-child::after { content: ""; }

/* ---------- 13. Awards ---------- */
.awards { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 18px; }
.award { background: #fff; border: 1px solid var(--line); overflow: hidden; }
.award__media { aspect-ratio: 16 / 10; background: #f4f5f3; overflow: hidden; }
.award__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.award:hover .award__media img { transform: scale(1.05); }
.award__body { padding: 14px 15px 16px; }
.award__year { font-family: var(--mono); font-size: 10px; color: var(--accent); letter-spacing: 0.1em; }
.award__title { margin-top: 6px; font-size: 12.5px; line-height: 1.5; font-weight: 500; }
.award__org { margin-top: 3px; font-size: 11px; color: var(--muted-2); }

/* ---------- 14. Page hero (sub pages) ---------- */
.page-hero {
  border-bottom: 1px solid var(--line);
  padding: 76px 0 64px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #fff 0%, var(--paper) 100%);
}
.page-hero__inner { display: flex; justify-content: space-between; align-items: flex-end; gap: 48px; }
.page-hero h1 {
  font-size: clamp(32px, 3.6vw, 50px);
  line-height: 1.1;
  letter-spacing: -0.03em;
  font-weight: 500;
  margin-top: 16px;
}
.page-hero .lede { margin-top: 18px; max-width: 56ch; }
.crumb { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; color: var(--muted-2); text-transform: uppercase; }
.crumb a:hover { color: var(--accent); }
.page-hero__count { font-family: var(--mono); font-size: 11px; color: var(--muted-2); text-align: right; letter-spacing: 0.1em; }
.page-hero__count b { display: block; font-size: 40px; font-weight: 400; color: var(--ink); letter-spacing: -0.03em; }

/* ---------- 15. Filters ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}
.chip {
  padding: 8px 15px;
  border: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--ink-3);
  background: transparent;
  transition: all 0.3s var(--ease);
  display: inline-flex;
  align-items: center;
  gap: 7px;
}
.chip span { font-family: var(--mono); font-size: 10px; color: var(--muted-2); }
.chip:hover { border-color: var(--line-strong); background: #fff; }
.chip.is-on { background: var(--ink); border-color: var(--ink); color: #fff; }
.chip.is-on span { color: rgba(255, 255, 255, 0.55); }

/* ---------- 16. Product card ---------- */
.products { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 26px; }
.pcard {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  overflow: hidden;
  transition: border-color 0.4s, transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}
.pcard:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: 0 30px 55px -44px rgba(14, 24, 33, 0.65);
}
.pcard__media {
  aspect-ratio: 4 / 3;
  background: linear-gradient(180deg, #f8f8f6, #eef0ed);
  overflow: hidden;
  position: relative;
}
.pcard__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.pcard:hover .pcard__media img { transform: scale(1.05); }
.pcard__cat {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  padding: 4px 9px;
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
  backdrop-filter: blur(6px);
}
.pcard__body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.pcard__body h3 { font-size: 16px; font-weight: 600; letter-spacing: 0.005em; line-height: 1.4; }
.pcard__body p { margin-top: 8px; font-size: 13px; color: var(--muted); line-height: 1.65; flex: 1; }
.pcard__foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--muted-2);
  text-transform: uppercase;
}
.pcard__foot svg { width: 13px; height: 13px; color: var(--ink); transition: transform 0.3s var(--ease); }
.pcard:hover .pcard__foot svg { transform: translateX(3px); }

/* ---------- 17. Product detail ---------- */
.pd { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 64px; padding: 64px 0 0; align-items: start; }
.pd__gallery { position: sticky; top: 100px; }
.pd__main {
  background: #fff;
  border: 1px solid var(--line);
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.pd__main img { width: 100%; height: 100%; object-fit: cover; }
.pd__thumbs { display: flex; gap: 10px; margin-top: 12px; }
.pd__thumb {
  width: 84px;
  height: 66px;
  border: 1px solid var(--line);
  background: #fff;
  padding: 4px;
  overflow: hidden;
  transition: border-color 0.3s;
}
.pd__thumb img { width: 100%; height: 100%; object-fit: contain; mix-blend-mode: multiply; }
.pd__thumb.is-on { border-color: var(--ink); }
.pd__title { font-size: clamp(26px, 2.6vw, 36px); line-height: 1.2; letter-spacing: -0.025em; font-weight: 500; margin-top: 14px; }
.pd__tagline { margin-top: 16px; color: var(--muted); font-size: 15.5px; line-height: 1.78; }
.pd__actions { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }

.spec { margin-top: 40px; border-top: 1px solid var(--line); }
.spec__row {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 20px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
  font-size: 13.5px;
}
.spec__k { color: var(--muted); }
.spec__v { color: var(--ink); font-weight: 450; }

.feature-list { margin-top: 22px; display: grid; gap: 12px; }
.feature-list li {
  display: flex;
  gap: 12px;
  font-size: 14px;
  color: var(--ink-3);
  line-height: 1.7;
}
.feature-list li::before {
  content: "";
  width: 5px;
  height: 5px;
  background: var(--accent);
  flex: none;
  margin-top: 9px;
}

/* ---------- 18. Timeline ---------- */
.timeline { border-top: 1px solid var(--line); }
.tl {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 40px;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}
.tl__year { font-family: var(--mono); font-size: 13px; letter-spacing: 0.06em; color: var(--accent); }
.tl__body h3 { font-size: 16px; font-weight: 600; }
.tl__body p { margin-top: 8px; font-size: 14px; color: var(--muted); line-height: 1.75; max-width: 68ch; }

/* ---------- 19. Clients ---------- */
.clients {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.client {
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 40px 24px;
  display: grid;
  place-items: center;
  text-align: center;
  min-height: 124px;
  transition: background 0.35s;
}
.client:hover { background: #fff; }
.client img { max-height: 58px; max-width: 100%; object-fit: contain; mix-blend-mode: multiply; transition: opacity 0.3s; }
.client:hover img { opacity: 0.75; }
.client b { font-size: 15px; letter-spacing: 0.14em; font-weight: 600; color: var(--ink-3); }
.client small { display: block; font-size: 10px; letter-spacing: 0.14em; color: var(--muted-2); margin-top: 6px; font-family: var(--mono); text-transform: uppercase; }

/* ---------- 20. CTA band ---------- */
.cta-band { position: relative; overflow: hidden; background: var(--ink); color: #fff; }
.cta-band__inner {
  padding: 88px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 48px;
  position: relative;
  z-index: 2;
}
.cta-band h2 {
  font-size: clamp(26px, 3vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.025em;
  font-weight: 500;
  max-width: 20ch;
}
.cta-band p { margin-top: 16px; color: #9db0be; font-size: 15px; max-width: 46ch; line-height: 1.75; }
.cta-band__glow {
  position: absolute;
  width: 620px;
  height: 620px;
  right: -120px;
  top: -260px;
  background: radial-gradient(circle, rgba(22, 82, 240, 0.55), transparent 62%);
  filter: blur(20px);
  pointer-events: none;
}

/* ---------- 21. Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.85fr 1.15fr; gap: 72px; }
.info-row { padding: 20px 0; border-bottom: 1px solid var(--line); display: grid; grid-template-columns: 96px 1fr; gap: 20px; }
.info-row dt { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.12em; color: var(--muted-2); text-transform: uppercase; padding-top: 3px; }
.info-row dd { margin: 0; font-size: 14.5px; line-height: 1.7; }
.info-row dd a { color: var(--ink); border-bottom: 1px solid var(--line-strong); }
.info-row dd a:hover { border-color: var(--accent); }
.info-person { font-weight: 600; }

.form { display: grid; gap: 18px; grid-template-columns: 1fr 1fr; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-family: var(--mono); font-size: 11.5px; letter-spacing: 0.07em; color: var(--muted); }
.field input,
.field textarea,
.field select {
  border: 1px solid var(--line);
  background: #fff;
  padding: 12px 14px;
  font-size: 14px;
  transition: border-color 0.3s, box-shadow 0.3s;
  border-radius: 0;
  width: 100%;
}
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-wash);
}
.field textarea { resize: vertical; min-height: 116px; }
.form__note { font-size: 12px; color: var(--muted-2); grid-column: 1 / -1; line-height: 1.6; }

/* ---------- 22. Footer ---------- */
.site-footer { background: #0a121a; color: #8fa3b3; padding: 68px 0 30px; border-top: 1px solid rgba(255, 255, 255, 0.08); }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.1fr; gap: 48px; padding-bottom: 54px; }
.site-footer .brand__logo { height: 26px; }
.site-footer .brand__name { color: #fff; }
.site-footer .brand__sub { color: #94a8b7; }
.footer-desc { margin-top: 20px; font-size: 13px; line-height: 1.8; max-width: 34ch; color: #7e93a3; }
.footer-col h4 {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: #5f7484;
  text-transform: uppercase;
  margin-bottom: 18px;
  font-weight: 400;
}
.footer-col li { margin-bottom: 10px; font-size: 13.5px; }
.footer-col a { transition: color 0.25s; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 11.5px;
  color: #5f7484;
  font-family: var(--mono);
  letter-spacing: 0.05em;
  flex-wrap: wrap;
}

/* ---------- 23. Reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 24. Responsive ---------- */
@media (max-width: 1240px) {
  .header-cta { display: none; }
}
@media (max-width: 1120px) {
  .brand__sub { display: none; }
  .nav a { padding: 9px 11px; }
  .nav a::after { left: 11px; right: 11px; }
}
@media (max-width: 980px) and (min-width: 781px) {
  .nav-toggle { display: inline-flex; flex-direction: column; justify-content: center; gap: 5px; width: 34px; height: 34px; border: 1px solid var(--line); }
  .nav-toggle i { display: block; width: 15px; height: 1px; background: var(--ink); margin: 0 auto; }
  .nav {
    position: fixed; inset: 74px 0 auto 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch;
    padding: 8px var(--gutter) 22px; gap: 0; display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  .nav a::after { display: none; }
  .header-inner { gap: 16px; }
  .header-tools { margin-left: auto; }
}
@media (max-width: 1080px) {
  :root { --gutter: 28px; }
  .hero__inner { grid-template-columns: 1fr; gap: 44px; padding: 64px 0 72px; }
  .hero__visual { max-width: 520px; }
  .split, .split--rev, .pd, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .pd__gallery { position: static; }
  .cat-grid, .products { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .awards { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
  .section { padding: 78px 0; }
}

@media (max-width: 780px) {
  :root { --gutter: 20px; }
  .hero__fs { top: 12px; right: 12px; bottom: auto; width: 34px; height: 34px; }
  .hero__fs svg { width: 14px; height: 14px; }
  .nav {
    position: fixed;
    inset: 74px 0 auto 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    align-items: stretch;
    padding: 10px 20px 24px;
    gap: 0;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
  .nav a::after { display: none; }
  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 34px;
    height: 34px;
    border: 1px solid var(--line);
  }
  .nav-toggle i { display: block; width: 15px; height: 1px; background: var(--ink); margin: 0 auto; }
  .header-tools { margin-left: auto; gap: 10px; }
  .header-inner { gap: 12px; }
  .hero h1 { font-size: clamp(32px, 8.6vw, 44px); }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat { border-right: 0; border-bottom: 1px solid var(--line); padding: 24px 0; }
  .stat:nth-child(odd) { padding-right: 18px; }
  .cat-grid, .products, .cols-2, .cols-3, .cols-4 { grid-template-columns: 1fr; }
  .awards { grid-template-columns: 1fr 1fr; }
  .cap-row { grid-template-columns: 40px 1fr; gap: 8px 16px; padding: 22px 0; }
  .cap-row__desc { grid-column: 2; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 20px; margin-bottom: 36px; }
  .cta-band__inner { flex-direction: column; align-items: flex-start; padding: 60px 0; }
  .form { grid-template-columns: 1fr; }
  .page-hero__inner { flex-direction: column; align-items: flex-start; gap: 24px; }
  .page-hero__count { text-align: left; }
  .clients { grid-template-columns: repeat(3, 1fr); }
  .client { padding: 26px 10px; min-height: 92px; }
  .client img { max-height: 36px !important; }
  .tl { grid-template-columns: 1fr; gap: 10px; padding: 22px 0; }
  .footer-top { grid-template-columns: 1fr; }
  .section { padding: 60px 0; }
  .pd { padding-top: 40px; }
  .spec__row { grid-template-columns: 1fr; gap: 2px; }
  .spec__k { font-size: 11.5px; }
}

/* brand film */
.film-head { display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap; margin-bottom: 22px; }
.film-head .title { margin: 0; font-size: clamp(22px, 2.6vw, 30px); }
.film-cap { margin: 0; font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; color: var(--muted-2); text-transform: uppercase; }
.film {
  margin: 0;
  border: 1px solid var(--line);
  background: #0a121a;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.film video { width: 100%; height: 100%; object-fit: contain; display: block; background: #000; }
@media (max-width: 760px) { .film { aspect-ratio: auto; } .film video { height: auto; } }

/* ---------- 产品详情正文 / 案例 ---------- */
.btnrow { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.pd__body { margin-top: 28px; font-size: 14.5px; line-height: 1.9; color: var(--ink-2); max-width: 62ch; }
.pd__body p { margin: 0 0 14px; }
.pd__meta { display: flex; gap: 18px; flex-wrap: wrap; margin-top: 18px; font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em; color: var(--muted-2); text-transform: uppercase; }

.case-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.case-card { display: flex; flex-direction: column; border: 1px solid var(--line); background: var(--paper); transition: border-color 0.3s var(--ease), transform 0.4s var(--ease); }
.case-card:hover { border-color: var(--line-strong); transform: translateY(-2px); }
.case-card__media { aspect-ratio: 16 / 10; overflow: hidden; background: #f2f3f0; }
.case-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.7s var(--ease); }
.case-card:hover .case-card__media img { transform: scale(1.03); }
.case-card__body { padding: 20px 20px 18px; display: flex; flex-direction: column; flex: 1; }
.case-card__idx { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; color: var(--muted-2); }
.case-card__body h3 { margin: 8px 0 8px; font-size: 17px; font-weight: 500; }
.case-card__body p { margin: 0; font-size: 13.5px; line-height: 1.75; color: var(--muted); flex: 1; }
.case-card__foot { display: flex; align-items: center; justify-content: space-between; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.1em; color: var(--muted-2); text-transform: uppercase; }
.case-card__foot svg { width: 15px; height: 15px; }
@media (max-width: 1024px) { .case-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 700px) { .case-grid { grid-template-columns: 1fr; } }