:root {
  --purple: #5b2c6f;
  --violet: #7d3c98;
  --lilac: #f5eef8;
  --ink: #1a0b2e;
  --paper: #ffffff;
  --line: #e8d5f0;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.75;
  font-size: 17px;
}

a { color: var(--purple); text-decoration: none; }
a:hover { text-decoration: underline; }
svg { display: block; }

.wrap {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  background: var(--purple);
  color: #fff;
}
.site-header a { color: #fff; }
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}
.brand svg { width: 28px; height: 28px; }
.nav { display: flex; flex-wrap: wrap; gap: 12px 18px; font-size: 0.92rem; }

.hero {
  padding: 40px 0 20px;
  background: linear-gradient(180deg, var(--lilac) 0%, #fff 100%);
}
.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(1.85rem, 4vw, 2.55rem);
  line-height: 1.22;
  color: var(--purple);
  max-width: 18ch;
}
.hero p { margin: 0 0 12px; max-width: 66ch; }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  background: var(--lilac);
  color: var(--purple);
  padding: 0.28em 0.9em;
  font-weight: 700;
  font-size: 0.92rem;
  border: 1px solid #d7bde2;
}
.chip svg { width: 14px; height: 14px; }

.section { padding: 42px 0; }
.section h2 {
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 2.5vw, 1.85rem);
  color: var(--purple);
  line-height: 1.3;
}
.section p { margin: 0 0 14px; }

.quad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 8px;
}
.duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 8px;
}
.card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 16px 16px 18px;
  border-radius: 16px;
}
.card svg { width: 28px; height: 28px; margin-bottom: 10px; color: var(--violet); }
.card h3 { margin: 0 0 8px; font-size: 1.02rem; color: var(--purple); }
.card p { margin: 0; }

.sidebar-demo {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 16px;
  margin: 16px 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
}
.side-list { background: var(--lilac); padding: 10px; }
.side-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  border-radius: 10px;
  background: #fff;
  margin-bottom: 8px;
  font-size: 0.9rem;
}
.side-row .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #c0392b;
  flex: 0 0 auto;
}
.pane { padding: 16px 18px; }
.mention-line {
  background: #fdeef8;
  border-left: 3px solid var(--violet);
  padding: 8px 10px;
  border-radius: 0 8px 8px 0;
}

.steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  counter-reset: jump;
}
.steps li {
  background: var(--lilac);
  border-radius: 14px;
  padding: 14px 14px 16px;
  position: relative;
}
.steps li::before {
  counter-increment: jump;
  content: "@" counter(jump);
  display: inline-block;
  background: var(--purple);
  color: #fff;
  border-radius: 999px;
  padding: 0.1em 0.55em;
  font-size: 0.78rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.table-wrap { overflow: auto; margin-top: 12px; }
table {
  width: 100%;
  border-collapse: collapse;
  min-width: 620px;
}
th, td {
  border: 1px solid var(--line);
  padding: 10px 12px;
  text-align: left;
  vertical-align: top;
}
th { background: var(--purple); color: #fff; }

.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 16px 0;
}
.faq-item h3 { margin: 0 0 8px; font-size: 1.04rem; color: var(--purple); }
.faq-item p { margin: 0; }

.site-footer {
  background: var(--ink);
  color: #e8d5f0;
  padding: 28px 0 36px;
  font-size: 0.92rem;
}
.site-footer p { margin: 0 0 10px; }

@media (max-width: 960px) {
  .quad, .steps { grid-template-columns: 1fr 1fr; }
  .sidebar-demo { grid-template-columns: 1fr; }
  .hero h1 { max-width: none; }
}
@media (max-width: 720px) {
  .duo, .quad, .steps { grid-template-columns: 1fr; }
  .site-header .wrap { flex-direction: column; align-items: flex-start; padding: 14px 0; }
}