/* 融继高科技官网。介绍公司与产品。样式随本页。 */
:root {
  --night: #0f172a;
  --night-2: #111c33;
  --titanium: #334155;
  --gold: #d97706;
  --gold-2: #f59e0b;
  --paper: #f5f0e8;
  --muted: #94a3b8;
}

* { box-sizing: border-box; }
html, body { margin: 0; background: var(--night); color: var(--paper); }
body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}
a { color: inherit; text-decoration: none; }

.wrap { width: min(1080px, calc(100% - 40px)); margin: 0 auto; }

.top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  letter-spacing: 0.16em;
  font-size: 13px;
  color: var(--gold-2);
}

.hero { padding: 28px 0 64px; }
.hero h1 {
  margin: 0;
  max-width: 12em;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", "SimSun", serif;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.04em;
}
.hero .lead {
  max-width: 36em;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.8;
}
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 2px;
  border: 1px solid var(--titanium);
  background: transparent;
  color: var(--paper);
  font: inherit;
  font-size: 15px;
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease, background 0.25s ease;
}
.btn-gold { background: var(--gold); border-color: var(--gold); color: #1c1408; }
.btn-gold:hover { background: var(--gold-2); }
.btn:hover { border-color: var(--gold); color: var(--gold-2); }
.btn-gold:hover { color: #1c1408; }

section { padding: 18px 0 56px; }
section h2 {
  margin: 0 0 8px;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", "SimSun", serif;
  font-size: 28px;
  font-weight: 600;
}
.kicker {
  margin: 0 0 22px;
  color: var(--muted);
  line-height: 1.7;
}

.grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 18px; }
.card {
  border: 1px solid var(--titanium);
  background: rgba(51, 65, 85, 0.25);
  padding: 22px 22px 26px;
}
.card h3 { margin: 0 0 10px; font-size: 18px; }
.card p, .card li { color: var(--muted); line-height: 1.75; }
.card ul { margin: 0; padding-left: 1.1em; }

.products { display: grid; grid-template-columns: 1.4fr 0.8fr; gap: 18px; }
.product {
  border-top: 2px solid var(--gold);
  border-right: 1px solid var(--titanium);
  border-bottom: 1px solid var(--titanium);
  border-left: 1px solid var(--titanium);
  padding: 26px 24px 28px;
  background: linear-gradient(180deg, rgba(217, 119, 6, 0.08), transparent 42%);
}
.product h3 {
  margin: 0;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", "SimSun", serif;
  font-size: 26px;
}
.product p { color: var(--muted); line-height: 1.8; }
.side-note {
  border: 1px solid var(--titanium);
  padding: 22px;
  color: var(--muted);
  line-height: 1.75;
}

.demand { display: none; margin-top: 18px; }
.demand.is-on { display: block; }
form { display: grid; gap: 12px; max-width: 640px; }
label { display: grid; gap: 6px; font-size: 14px; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--titanium);
  background: #0b1220;
  color: var(--paper);
  padding: 12px;
  font: inherit;
}
textarea { min-height: 110px; resize: vertical; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.2);
}
.receipt { display: none; margin-top: 12px; color: var(--gold-2); line-height: 1.7; }
.receipt.is-on { display: block; }

footer {
  padding: 28px 0 36px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.8;
  border-top: 1px solid rgba(51, 65, 85, 0.8);
}
footer p { margin: 0; }
footer a:hover { color: var(--gold-2); }

@media (max-width: 800px) {
  .grid, .products { grid-template-columns: 1fr; }
  .top { letter-spacing: 0.08em; }
}