:root {
  color-scheme: light;
  --bg: #eef4fb;
  --ink: #0f172a;
  --muted: #475569;
  --line: #d7e1ee;
  --card: #ffffff;
  --brand: #0f766e;
  --brand-2: #2563eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 28%),
    radial-gradient(circle at top left, rgba(15, 118, 110, 0.12), transparent 32%),
    var(--bg);
}

a {
  color: var(--brand-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  padding: 28px 0 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 12px;
}

.hero-card {
  margin-top: 14px;
  padding: 26px;
  border-radius: 22px;
  background: linear-gradient(135deg, #0f766e, #2563eb);
  color: #fff;
  box-shadow: 0 16px 40px rgba(37, 99, 235, 0.18);
}

.hero-card h1 {
  margin: 0 0 10px;
  font-size: clamp(30px, 4vw, 46px);
  line-height: 1.08;
}

.hero-card p {
  margin: 0;
  max-width: 760px;
  line-height: 1.7;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  font-weight: 700;
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
}

.cta.primary {
  background: #fff;
  color: #0f172a;
}

.grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 18px;
  padding-bottom: 28px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
}

.panel h2 {
  margin: 0 0 12px;
  font-size: 22px;
}

.panel p,
.panel li {
  color: var(--muted);
  line-height: 1.7;
}

.panel ul,
.panel ol {
  margin: 0;
  padding-left: 20px;
}

.faq-item + .faq-item {
  margin-top: 14px;
}

.faq-item h3 {
  margin: 0 0 6px;
  font-size: 17px;
}

.tool-links {
  display: grid;
  gap: 10px;
}

.tool-link {
  display: block;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #f8fbff;
  font-weight: 700;
}

.tool-frame-panel {
  grid-column: 1 / -1;
  padding: 14px;
}

.tool-frame-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.tool-frame-head p {
  margin: 0;
}

.tool-frame {
  width: 100%;
  min-height: 980px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
}

.foot {
  padding: 0 0 34px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .grid {
    grid-template-columns: 1fr;
  }
}