:root {
  --ink: #122033;
  --muted: #5c6b7e;
  --line: #e4e9f0;
  --paper: #f5f7fb;
  --card: #ffffff;
  --navy: #0c2340;
  --navy-2: #16365c;
  --blue: #1f6feb;
  --blue-dark: #1558c0;
  --gold: #b9893a;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body.site-home {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: #fff;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 40px;
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}
.brand { display: flex; align-items: center; }
.brand img { height: 34px; width: auto; display: block; }
.site-nav { display: flex; align-items: center; gap: 28px; font-size: 15px; }
.site-nav a { color: #24364c; }
.site-nav a:hover { color: var(--blue); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
}
.btn-primary { background: var(--blue); color: #fff; }
.btn-primary:hover { background: var(--blue-dark); }
.btn-ghost { background: #fff; color: var(--navy); border-color: #c9d3e0; }
.btn-ghost:hover { border-color: var(--blue); color: var(--blue); }
.btn-light { background: #fff; color: var(--navy); }
.btn-light:hover { background: #eef4ff; }

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 48px;
  align-items: center;
  padding: 72px 40px 64px;
  background:
    radial-gradient(900px 420px at 85% 10%, rgba(31, 111, 235, 0.12), transparent 60%),
    linear-gradient(180deg, #f8fafc 0%, #fff 100%);
}
.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
}
.hero h1 {
  margin: 0 0 16px;
  font-size: 46px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--navy);
}
.lead {
  margin: 0 0 28px;
  max-width: 640px;
  color: #3d4d63;
  font-size: 18px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin: 18px 0 0; color: var(--muted); font-size: 13px; }

.card-stage { display: flex; justify-content: center; }
.plastic {
  width: min(100%, 420px);
  aspect-ratio: 1.7 / 1;
  border-radius: 18px;
  padding: 24px 26px;
  color: #fff;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.16), transparent 36%),
    linear-gradient(160deg, #1a4f9c 0%, #0c2340 58%, #08182c 100%);
  box-shadow: 0 24px 50px rgba(12, 35, 64, 0.28);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.plastic-top, .plastic-bottom { display: flex; justify-content: space-between; align-items: center; }
.plastic-brand { font-weight: 700; letter-spacing: 0.14em; font-size: 14px; }
.chip {
  width: 42px;
  height: 32px;
  border-radius: 6px;
  background: linear-gradient(135deg, #f3e0b5, #c49645 45%, #f6e7c4);
}
.plastic-type { font-size: 13px; letter-spacing: 0.08em; color: rgba(255,255,255,0.82); }
.pan {
  margin: 8px 0 0;
  font-size: 22px;
  letter-spacing: 0.16em;
  font-variant-numeric: tabular-nums;
}
.meta-label { display: block; font-size: 10px; letter-spacing: 0.12em; color: rgba(255,255,255,0.62); }
.meta-value { font-size: 14px; letter-spacing: 0.06em; }

.section { padding: 64px 40px; }
.section h2 { margin: 0 0 8px; font-size: 30px; color: var(--navy); letter-spacing: -0.02em; }
.section-lead { margin: 0 0 28px; max-width: 680px; color: var(--muted); font-size: 16px; }
.section-head { margin-bottom: 8px; }

.capability {
  background: var(--paper);
}
.grid-3, .grid-4 {
  display: grid;
  gap: 16px;
}
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 20px 20px;
}
.panel h3 { margin: 10px 0 8px; font-size: 18px; color: var(--navy); }
.panel p { margin: 0; color: var(--muted); font-size: 14px; }
.mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: #e8f1ff;
  color: var(--blue);
  font-weight: 700;
}

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.step {
  padding: 8px 8px 0 0;
}
.step h3 { margin: 8px 0; font-size: 18px; color: var(--navy); }
.step p { margin: 0; color: var(--muted); }
.step-no {
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 13px;
}

.trust {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: center;
  background: var(--navy);
  color: #fff;
}
.trust h2, .trust .section-lead { color: #fff; }
.trust .section-lead { color: rgba(255,255,255,0.74); }
.trust-list { display: grid; gap: 12px; }
.trust-list div {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 12px;
  padding: 16px 18px;
}
.trust-list strong { display: block; margin-bottom: 4px; }
.trust-list span { color: rgba(255,255,255,0.72); font-size: 14px; }

.closing {
  text-align: center;
  padding-bottom: 72px;
}
.closing h2 { margin-bottom: 12px; }
.closing p { margin: 0 auto 22px; max-width: 560px; color: var(--muted); }
.closing .hero-actions { justify-content: center; }

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 40px 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.site-footer nav { display: flex; gap: 18px; }
.site-footer a:hover { color: var(--blue); }

@media (max-width: 980px) {
  .site-header, .hero, .section, .site-footer { padding-left: 20px; padding-right: 20px; }
  .hero, .trust, .grid-4, .grid-3, .steps { grid-template-columns: 1fr; }
  .hero { padding-top: 40px; }
  .hero h1 { font-size: 34px; }
  .site-nav { gap: 14px; font-size: 14px; }
  .site-footer { flex-direction: column; }
}
@media (max-width: 720px) {
  .site-header { height: auto; padding-top: 12px; padding-bottom: 12px; align-items: flex-start; flex-direction: column; }
  .hide-sm { display: none; }
}