:root {
  color-scheme: light;
  --ink: #082b57;
  --muted: #5f7188;
  --line: #d8e6f4;
  --panel: #ffffff;
  --soft: #f4f9ff;
  --cyan: #24b7ff;
  --blue: #0067d8;
  --blue-dark: #004d9f;
  --green: #12a779;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: linear-gradient(180deg, #f4f9ff 0%, #ffffff 38%, #f6faff 100%);
}
a { color: inherit; text-decoration: none; }

.top-strip {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 8px clamp(18px, 5vw, 64px);
  background: var(--blue-dark);
  color: #d9e5ee;
  font-size: 13px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 5vw, 64px);
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(220,229,239,.8);
  backdrop-filter: blur(18px);
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 210px; }
.brand-logo {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 8px 22px rgba(23,105,255,.18);
}
.brand strong, .brand small { display: block; }
.brand small { margin-top: 2px; color: var(--muted); font-size: 12px; }
.nav { display: flex; align-items: center; gap: 22px; font-size: 14px; color: #273449; }
.nav a:hover { color: var(--blue); }
.nav-group { position: relative; padding: 18px 0; }
.nav-menu {
  position: absolute;
  top: 52px;
  left: -20px;
  display: none;
  min-width: 190px;
  padding: 10px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  box-shadow: 0 18px 50px rgba(8,17,31,.14);
}
.nav-menu a { display: block; padding: 10px 12px; white-space: nowrap; }
.nav-group:hover .nav-menu { display: block; }
.header-actions { display: flex; gap: 10px; }
button, input, select, textarea { font: inherit; }
.ghost-btn, .lang-btn, .secondary-btn, .primary-btn {
  min-height: 42px;
  border-radius: 8px;
  border: 1px solid var(--line);
  padding: 0 16px;
  cursor: pointer;
}
.lang-btn, .ghost-btn, .secondary-btn { background: #fff; color: var(--ink); }
.primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
  font-weight: 700;
}
.section { padding: 82px clamp(20px, 6vw, 88px); }
.hero {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(360px, 1.1fr);
  align-items: center;
  gap: 48px;
  min-height: calc(100vh - 104px);
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0;
}
h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 780px;
  font-size: clamp(40px, 6.2vw, 68px);
  line-height: 1.08;
  letter-spacing: 0;
  margin-bottom: 22px;
}
h2 { font-size: clamp(28px, 4vw, 46px); line-height: 1.15; margin-bottom: 18px; }
h3 { font-size: 20px; margin-bottom: 10px; }
p { color: var(--muted); line-height: 1.75; }
.hero-text { max-width: 680px; font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.hero-badges span {
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #324054;
  font-size: 13px;
  font-weight: 700;
}
.hero-panel {
  position: relative;
  min-height: 540px;
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 4px;
  overflow: hidden;
  background:
    linear-gradient(115deg, rgba(0,77,159,.92), rgba(0,103,216,.18) 52%, rgba(255,255,255,.35)),
    radial-gradient(circle at 64% 34%, rgba(36,183,255,.26), transparent 34%),
    linear-gradient(145deg, #0057b8 0%, #0b72df 54%, #eef7ff 54%, #ffffff 100%);
  box-shadow: 0 28px 80px rgba(0, 88, 184, .18);
}
.hero-product-stage {
  position: absolute;
  inset: 34px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  gap: 22px;
  z-index: 1;
}
.hero-product-card {
  display: grid;
  place-items: center;
  align-content: center;
  height: 290px;
  margin: 0;
  padding: 22px;
  border-radius: 8px;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(255,255,255,.75);
  box-shadow: 0 18px 50px rgba(0,58,126,.18);
}
.hero-product-card img {
  width: 100%;
  height: 210px;
  object-fit: contain;
  filter: drop-shadow(0 20px 24px rgba(0,58,126,.2));
}
.hero-product-card figcaption {
  margin-top: 12px;
  color: #0a447f;
  font-weight: 800;
  font-size: 15px;
}
.device-orbit { position: absolute; inset: 40px; }
.ring-device {
  position: absolute;
  left: 12%;
  top: 14%;
  width: 150px;
  aspect-ratio: 1;
  border: 22px solid #dce8f2;
  border-top-color: var(--cyan);
  border-radius: 50%;
  box-shadow: inset 0 0 0 10px #0f2034, 0 18px 50px rgba(0,0,0,.22);
}
.watch-device {
  position: absolute;
  right: 11%;
  top: 16%;
  width: 148px;
  height: 214px;
  border-radius: 34px;
  background: var(--blue-dark);
  box-shadow: 0 22px 55px rgba(0,0,0,.32);
}
.watch-device::before, .watch-device::after {
  content: "";
  position: absolute;
  left: 43px;
  width: 62px;
  height: 52px;
  background: #102942;
}
.watch-device::before { top: -45px; border-radius: 24px 24px 4px 4px; }
.watch-device::after { bottom: -45px; border-radius: 4px 4px 24px 24px; }
.watch-device span {
  position: absolute;
  inset: 22px;
  border-radius: 24px;
  background: linear-gradient(180deg, #173a58, #0b1726);
}
.band-device {
  position: absolute;
  left: 26%;
  bottom: 7%;
  width: 280px;
  height: 70px;
  border-radius: 999px;
  background: linear-gradient(90deg, #111d2c, #22d6c6, #111d2c);
  transform: rotate(-10deg);
}
.signal-card {
  position: absolute;
  left: 42px;
  bottom: 38px;
  z-index: 2;
  padding: 18px;
  border-radius: 8px;
  background: rgba(255,255,255,.9);
  box-shadow: 0 18px 40px rgba(5, 20, 35, .18);
}
.signal-card span { display: block; color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding: 0 clamp(20px, 6vw, 88px) 40px;
}
.metrics div {
  padding: 30px;
  background: rgba(255,255,255,.92);
  border: 1px solid var(--line);
}
.metrics strong { display: block; font-size: 30px; margin-bottom: 8px; }
.metrics span { color: var(--muted); }
.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: 46px; align-items: start; }
.feature-grid, .product-grid, .case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.feature-grid article, .product-card, .case-grid article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 26px;
}
.section-head { max-width: 760px; margin-bottom: 32px; }
.product-card { min-height: 440px; display: flex; flex-direction: column; transition: transform .2s ease, box-shadow .2s ease; overflow: hidden; }
.product-card:hover { transform: translateY(-4px); box-shadow: 0 18px 46px rgba(8,17,31,.1); }
.product-visual { height: 170px; margin-bottom: 24px; background: #eef4f8; position: relative; overflow: hidden; border-radius: 8px; }
.product-photo {
  display: grid;
  place-items: center;
  height: 196px;
  margin: 0 0 22px;
  padding: 18px;
  border-radius: 6px;
  background: radial-gradient(circle at 50% 48%, rgba(36,183,255,.12), transparent 42%), linear-gradient(180deg, #ffffff, #eef7ff);
  border: 1px solid #e4edf5;
  overflow: hidden;
}
.product-photo img {
  max-width: 100%;
  max-height: 168px;
  object-fit: contain;
  filter: drop-shadow(0 16px 22px rgba(8,17,31,.16));
}
.product-tag {
  align-self: flex-start;
  margin-bottom: 12px;
  padding: 6px 10px;
  background: #eaf7ff;
  color: #1769ff;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
}
.product-card a { margin-top: auto; color: var(--blue); font-weight: 700; }
.product-visual.ring::before {
  content: "";
  position: absolute;
  inset: 38px 74px;
  border: 18px solid #0b1625;
  border-top-color: var(--cyan);
  border-radius: 50%;
}
.product-visual.watch::before {
  content: "";
  position: absolute;
  left: calc(50% - 42px);
  top: 22px;
  width: 84px;
  height: 126px;
  border-radius: 24px;
  background: #0b1625;
  box-shadow: 0 -34px 0 -10px #17324c, 0 34px 0 -10px #17324c;
}
.product-visual.band::before {
  content: "";
  position: absolute;
  left: 34px;
  right: 34px;
  top: 58px;
  height: 54px;
  border-radius: 999px;
  background: linear-gradient(90deg, #091421, var(--cyan), #091421);
}
.process { background: linear-gradient(135deg, #004d9f, #083b78); color: #fff; }
.process p, .process .eyebrow { color: #9fb5c7; }
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.steps li { border: 1px solid rgba(255,255,255,.14); border-radius: 8px; padding: 24px; background: rgba(255,255,255,.05); }
.steps span { color: var(--cyan); font-weight: 800; }
.steps strong { display: block; margin: 18px 0 8px; font-size: 20px; }
.certs, .contact { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; }
.cert-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 12px; }
.cert-list span { display: grid; place-items: center; min-height: 94px; border-radius: 8px; border: 1px solid var(--line); background: #fff; font-size: 24px; font-weight: 800; color: var(--blue); }
.factory-band {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 48px;
  background: #f4f9ff;
}
.factory-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.factory-grid article {
  min-height: 116px;
  padding: 22px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 4px;
}
.factory-grid strong { display: block; color: var(--blue); margin-bottom: 18px; }
.factory-grid span { color: #2d394c; font-weight: 700; line-height: 1.55; }
.factory-photo {
  margin: 28px 0 0;
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: #fff;
}
.factory-photo img {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.global-map {
  display: grid;
  grid-template-columns: .75fr 1.25fr;
  gap: 42px;
  align-items: center;
  background: #fff;
}
.map-card {
  position: relative;
  min-height: 360px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 4px;
  background:
    linear-gradient(90deg, rgba(23,105,255,.08) 1px, transparent 1px),
    linear-gradient(rgba(23,105,255,.08) 1px, transparent 1px),
    radial-gradient(circle at 18% 42%, rgba(34,214,198,.22), transparent 15%),
    radial-gradient(circle at 49% 36%, rgba(23,105,255,.18), transparent 16%),
    radial-gradient(circle at 70% 52%, rgba(28,165,109,.16), transparent 18%),
    #f3f9ff;
  background-size: 42px 42px, 42px 42px, auto, auto, auto, auto;
}
.pin {
  position: absolute;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--blue-dark);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 12px 30px rgba(8,17,31,.16);
}
.pin::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--cyan);
}
.pin-us { left: 16%; top: 38%; }
.pin-eu { left: 45%; top: 30%; }
.pin-me { left: 58%; top: 48%; }
.pin-sea { left: 70%; top: 62%; }
.cert-showcase { display: grid; gap: 16px; }
.gallery-section { background: #fff; }
.factory-gallery-section { background: #f4f9ff; }
.photo-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px;
}
.photo-gallery figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}
.photo-gallery img {
  display: block;
  width: 100%;
  height: 230px;
  object-fit: contain;
  padding: 18px;
  background: linear-gradient(180deg, #ffffff, #f1f7ff);
}
.factory-real-gallery { grid-template-columns: repeat(3, 1fr); }
.factory-real-gallery img {
  height: 260px;
  object-fit: cover;
  padding: 0;
  background: #eef5fb;
}
.photo-gallery figcaption {
  padding: 14px 16px 16px;
  color: var(--ink);
  font-weight: 800;
}
.case-grid article img {
  width: 100%;
  height: 150px;
  object-fit: contain;
  margin-bottom: 18px;
  padding: 12px;
  border-radius: 6px;
  background: #f3f9ff;
  display: block;
}
.case-grid article:first-child img { object-fit: cover; padding: 0; }
.case-grid article strong { display: block; margin-bottom: 10px; }
.contact-form { display: grid; gap: 12px; }
.contact-form input, .contact-form select, .contact-form textarea, .admin-card input, .admin-card select, .admin-card textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 13px 14px;
  background: #fff;
  color: var(--ink);
}
textarea { min-height: 118px; resize: vertical; }
.admin-panel {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: none;
  justify-content: flex-end;
  background: rgba(8,17,31,.42);
}
.admin-panel.open { display: flex; }
.admin-card {
  width: min(520px, 100%);
  height: 100%;
  overflow: auto;
  background: #fff;
  padding: 34px;
  box-shadow: -30px 0 70px rgba(0,0,0,.18);
}
.close-btn { float: right; border: 0; background: transparent; font-size: 34px; cursor: pointer; }
.admin-card label { display: grid; gap: 8px; margin: 14px 0; color: #35435a; }
.upload-list { display: grid; gap: 12px; margin-top: 20px; }
.upload-item { border: 1px solid var(--line); border-radius: 8px; padding: 12px; }
.upload-item img { width: 100%; max-height: 180px; object-fit: cover; border-radius: 6px; margin-top: 8px; }
footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding: 28px clamp(20px, 6vw, 88px);
  border-top: 1px solid var(--line);
  background: #003f84;
  color: #b9c7d5;
}
footer strong { display: block; color: #fff; margin-bottom: 6px; }
.footer-links { display: flex; gap: 18px; }
.footer-links a:hover { color: #fff; }

@media (max-width: 980px) {
  .site-header { align-items: flex-start; flex-wrap: wrap; }
  .nav { order: 3; width: 100%; overflow-x: auto; padding-bottom: 4px; }
  .hero, .split, .certs, .contact, .factory-band, .global-map { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-panel { min-height: 420px; }
  .metrics, .feature-grid, .product-grid, .case-grid, .steps, .factory-grid, .photo-gallery, .factory-real-gallery { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .top-strip { display: none; }
  .site-header { padding: 14px 16px; }
  .brand { min-width: 0; }
  .brand small { display: none; }
  .section { padding: 60px 18px; }
  h1 { font-size: 38px; }
  .hero-panel { min-height: 330px; }
  .hero-product-stage { inset: 18px; gap: 12px; }
  .hero-product-card { height: 220px; padding: 12px; }
  .hero-product-card img { height: 155px; }
  .hero-product-card figcaption { font-size: 13px; }
  .ring-device { width: 105px; border-width: 15px; }
  .watch-device { width: 98px; height: 148px; }
  .band-device { width: 190px; }
  .metrics, .feature-grid, .product-grid, .case-grid, .steps, .cert-list, .factory-grid, .photo-gallery, .factory-real-gallery { grid-template-columns: 1fr; }
  .footer-links { width: 100%; flex-wrap: wrap; }
  .pin { position: static; display: inline-block; margin: 10px; }
}