:root {
  --purple: #5b2c6f;
  --purple-deep: #3d1c4b;
  --lilac: #f4eef8;
  --lilac-card: #ffffff;
  --mist: #e6d8ef;
  --ink: #2a1833;
  --muted: #5a4763;
  --accent: #8e44ad;
}

* { box-sizing: border-box; }
html { scroll-behavior: auto; }
body {
  margin: 0;
  background: var(--lilac);
  color: var(--ink);
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.8;
}

.ribbon {
  background: var(--purple);
  color: #f8effc;
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  padding: 16px 5vw;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
}
.nav {
  display: flex;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 16px 20px;
}
.nav a { color: #f8effc; text-decoration: none; font-size: 14px; }
.nav a:hover { text-decoration: underline; }

.hero {
  padding: 48px 5vw 36px;
  background: linear-gradient(160deg, #efe4f6 0%, var(--lilac) 55%, #fff 100%);
}
.hero h1 {
  margin: 0 0 14px;
  font-size: clamp(26px, 4vw, 40px);
  max-width: 16em;
  line-height: 1.3;
}
.hero p {
  margin: 0;
  max-width: 42em;
  color: var(--muted);
  font-size: 17px;
}

.wrap { width: min(1140px, 92vw); margin: 0 auto; }
section { padding: 54px 0; }
h2 { margin: 0 0 16px; font-size: clamp(22px, 2.8vw, 30px); line-height: 1.4; }
.lead { color: var(--muted); margin: 0 0 24px; max-width: 48em; }
p { margin: 0 0 16px; }

.trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.deep {
  background: var(--lilac-card);
  border-radius: 18px;
  padding: 26px 22px 28px;
  box-shadow: 0 10px 30px rgba(91, 44, 111, 0.08);
  border: 1px solid var(--mist);
}
.deep svg { display: block; margin-bottom: 14px; }
.deep h3 { margin: 0 0 10px; font-size: 20px; color: var(--purple); }
.deep p { color: var(--muted); font-size: 15px; }

.voice-band {
  background: var(--purple-deep);
  color: #f6ebfb;
  padding: 28px 5vw;
}
.voice-band .wrap { display: grid; grid-template-columns: auto 1fr; gap: 20px; align-items: start; }
.voice-band h2 { color: #fff; }
.voice-band p { color: #e4d0ee; }

.screen {
  display: grid;
  grid-template-columns: 220px 1fr;
  min-height: 280px;
  background: #fff;
  border: 1px solid var(--mist);
  border-radius: 16px;
  overflow: hidden;
}
.screen-side {
  background: var(--purple);
  color: #f7ecfb;
  padding: 18px 14px;
  font-size: 13px;
}
.screen-side span {
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
  margin-bottom: 6px;
  background: rgba(255,255,255,0.12);
}
.screen-main { padding: 22px 24px; }
.bubble {
  background: var(--lilac);
  border-radius: 12px;
  padding: 10px 12px;
  margin-bottom: 10px;
  font-size: 14px;
  color: var(--muted);
}
.bubble.file { border-left: 4px solid var(--accent); }

.steps {
  display: flex;
  gap: 0;
}
.step {
  flex: 1;
  background: #fff;
  border: 1px solid var(--mist);
  padding: 18px 16px;
}
.step strong {
  display: block;
  color: var(--purple);
  margin-bottom: 8px;
  font-size: 15px;
}

table { width: 100%; border-collapse: collapse; background: #fff; font-size: 15px; }
th, td { border: 1px solid var(--mist); padding: 12px 14px; text-align: left; vertical-align: top; }
th { background: var(--purple); color: #fff; }

.faq-list { margin: 0; padding: 0; list-style: none; }
.faq-list li {
  background: #fff;
  border-radius: 12px;
  padding: 18px 20px;
  margin-bottom: 12px;
  border: 1px solid var(--mist);
}
.faq-list h3 { margin: 0 0 8px; font-size: 17px; color: var(--purple-deep); }
.faq-list p { color: var(--muted); font-size: 15px; }

.site-footer {
  background: var(--purple-deep);
  color: #eadcf1;
  padding: 34px 5vw 40px;
  font-size: 14px;
}
.site-footer p { margin: 0 0 10px; }

@media (max-width: 900px) {
  .trio, .screen, .voice-band .wrap { grid-template-columns: 1fr; }
  .steps { flex-direction: column; }
  .ribbon { grid-template-columns: 1fr; }
  .nav { justify-content: flex-start; }
}