:root {
  --bg: #07090d;
  --panel: #0e131b;
  --line: rgba(120, 200, 255, 0.14);
  --text: #e8eef6;
  --muted: #8b97a8;
  --cyan: #3ee0c8;
  --amber: #f0b429;
  --glow: rgba(62, 224, 200, 0.35);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: Inter, "Noto Sans SC", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
.noise {
  pointer-events: none;
  position: fixed; inset: 0;
  opacity: .04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  z-index: 50;
}

.nav {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; padding: 14px 6vw;
  background: rgba(7,9,13,.78);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.logo { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.logo-mark {
  width: 36px; height: 36px; display: grid; place-items: center;
  border: 1px solid var(--cyan); color: var(--cyan);
  font-family: "Space Grotesk", sans-serif; font-weight: 700; font-size: 13px;
  box-shadow: 0 0 18px var(--glow);
}
.logo strong { display: block; font-family: "Space Grotesk", sans-serif; letter-spacing: .08em; font-size: 14px; }
.logo small { color: var(--muted); font-size: 11px; }
nav { display: flex; gap: 22px; }
nav a { color: var(--muted); text-decoration: none; font-size: 13px; letter-spacing: .06em; text-transform: uppercase; }
nav a:hover { color: var(--text); }
.nav-actions { display: flex; gap: 10px; align-items: center; }
.lang {
  background: transparent; color: var(--cyan); border: 1px solid var(--line);
  padding: 6px 10px; cursor: pointer; font: inherit; font-size: 12px;
}

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--cyan); color: #04221d; text-decoration: none;
  font-weight: 600; padding: 12px 18px; border: 0; cursor: pointer;
  font-family: inherit; font-size: 14px;
  box-shadow: 0 0 24px var(--glow);
}
.btn-sm { padding: 8px 12px; font-size: 13px; }
.btn-ghost {
  background: transparent; color: var(--text);
  border: 1px solid var(--line); box-shadow: none;
}

.hero { position: relative; min-height: 92vh; display: grid; align-items: end; }
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(7,9,13,.35) 0%, rgba(7,9,13,.55) 45%, #07090d 100%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(62,224,200,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(62,224,200,.06) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, #000 20%, transparent 80%);
}
.hero-inner { position: relative; padding: 12vh 6vw 8vh; max-width: 1100px; }
.eyebrow {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: .22em; font-size: 12px; color: var(--cyan); text-transform: uppercase;
}
h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(40px, 7vw, 84px); line-height: 1.02;
  margin: 14px 0 18px; font-weight: 700;
}
.lead { max-width: 640px; color: #c5ced8; font-size: 18px; }
.hero-cta { display: flex; gap: 12px; margin: 28px 0 40px; flex-wrap: wrap; }
.stats { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 16px; list-style: none; max-width: 720px; }
.stats b { display: block; font-family: "Space Grotesk", sans-serif; font-size: 28px; color: #fff; }
.stats span { color: var(--muted); font-size: 12px; letter-spacing: .08em; text-transform: uppercase; }

.strip {
  border-block: 1px solid var(--line);
  padding: 14px 6vw;
  color: var(--muted); font-size: 13px; letter-spacing: .14em; text-transform: uppercase;
  overflow: hidden; white-space: nowrap;
}

.section { padding: 88px 6vw; }
.section-head { max-width: 680px; margin-bottom: 40px; }
h2 { font-family: "Space Grotesk", sans-serif; font-size: clamp(28px, 4vw, 44px); line-height: 1.15; margin: 10px 0 14px; }
.section-head p:last-child { color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.card {
  background: var(--panel); border: 1px solid var(--line); overflow: hidden;
}
.card img { width: 100%; aspect-ratio: 3/2; object-fit: cover; display: block; }
.card > div, .card-list { padding: 20px; }
.card h3 { font-family: "Space Grotesk", sans-serif; margin-bottom: 8px; }
.card p, .card li { color: var(--muted); font-size: 14px; }
.card-list ul { padding-left: 18px; display: grid; gap: 8px; }

.split {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center;
}
.split img { width: 100%; height: 100%; min-height: 360px; object-fit: cover; border: 1px solid var(--line); }
.steps { list-style: none; margin-top: 28px; display: grid; gap: 16px; }
.steps li { display: grid; grid-template-columns: 48px 1fr; gap: 14px; }
.steps span {
  font-family: "Space Grotesk", sans-serif; color: var(--amber); font-size: 14px; padding-top: 4px;
}
.steps p { color: var(--muted); font-size: 14px; }

.about { background: linear-gradient(180deg, #07090d, #0c1218); }

.contact {
  display: grid; grid-template-columns: 1fr 1fr; gap: 48px;
  border-top: 1px solid var(--line);
}
.contact-list { margin-top: 20px; list-style: none; color: var(--muted); display: grid; gap: 8px; }
.form { display: grid; gap: 14px; }
.form label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.form input, .form textarea {
  background: #0a0e14; border: 1px solid var(--line); color: var(--text);
  padding: 12px; font: inherit;
}
.form input:focus, .form textarea:focus { outline: 1px solid var(--cyan); }
.ok { color: var(--cyan); font-size: 13px; }

footer {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding: 24px 6vw 40px; color: var(--muted); font-size: 13px;
  border-top: 1px solid var(--line);
}

.card { color: inherit; text-decoration: none; }
nav a.on { color: var(--text); }

.catalog { padding: 40px 6vw 80px; }
.catalog-head h1 { font-family: "Space Grotesk", sans-serif; font-size: clamp(32px, 5vw, 52px); margin: 8px 0 8px; }
.muted { color: var(--muted); }
.filters { display: grid; grid-template-columns: 1.4fr .8fr .8fr; gap: 10px; margin-top: 22px; }
.filters input, .filters select {
  background: #0a0e14; border: 1px solid var(--line); color: var(--text);
  padding: 12px; font: inherit;
}
.pgrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 14px; margin-top: 28px;
}
.pcard {
  background: var(--panel); border: 1px solid var(--line);
  color: inherit; text-decoration: none; display: flex; flex-direction: column;
}
.pcard-img { aspect-ratio: 1; background: #10151c; overflow: hidden; }
.pcard-img img { width: 100%; height: 100%; object-fit: contain; display: block; }
.pcard-body { padding: 12px 12px 16px; }
.pcard-body h3 { font-size: 14px; font-weight: 600; line-height: 1.35; }
.pcard-body p { color: var(--muted); font-size: 12px; margin-top: 6px; }
.pid { color: var(--cyan); font-size: 11px; letter-spacing: .08em; }
.more-wrap { display: flex; justify-content: center; margin-top: 28px; }

.pdp { padding: 32px 6vw 80px; }
.crumb { color: var(--muted); text-decoration: none; font-size: 13px; }
.pdp-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; margin: 20px 0 56px; align-items: start; }
.pdp-photo { background: #10151c; border: 1px solid var(--line); }
.pdp-photo img { width: 100%; display: block; }
.pdp h1 { font-family: "Space Grotesk", sans-serif; font-size: clamp(26px, 4vw, 40px); margin: 8px 0 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 16px; }
.tags a {
  border: 1px solid var(--line); color: var(--cyan); text-decoration: none;
  font-size: 12px; padding: 4px 8px;
}
.rel-h { font-family: "Space Grotesk", sans-serif; font-size: 22px; margin-top: 8px; }
.wa {
  display: inline-flex; align-items: center; gap: 10px;
  margin: 16px 16px 16px 0; padding: 10px 14px;
  background: #25D366; color: #062b16; text-decoration: none; font-weight: 650;
}
.wa img { width: 36px; height: 36px; display: block; }
.wa span { display: flex; flex-direction: column; line-height: 1.2; }
.wa b { font-size: 13px; }
.wa em { font-style: normal; font-size: 16px; letter-spacing: .02em; }
.wechat-box { margin-top: 18px; }
.wechat-box p { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.wechat-box img { width: 168px; background: #fff; padding: 8px; display: block; }

@media (max-width: 860px) {
  nav { display: none; }
  .stats, .cards, .cards-3, .split, .contact, .pdp-grid, .filters { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
}