:root {
  --violet: #5b21b6;
  --deep: #2e1065;
  --lilac: #f7f3ff;
  --paper: #fff;
  --ink: #1e1145;
  --mute: #5b4b7a;
  --line: #d8c8f0;
  --light: #f3e8ff;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 20px;
  line-height: 1.75;
}

a {
  color: var(--violet);
}

img,
svg {
  vertical-align: middle;
}

.mast {
  background: var(--violet);
  color: #fff;
}

.mast-inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.04em;
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: #fff;
  text-decoration: none;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}

.nav a[aria-current="page"] {
  border-bottom-color: #fff;
  font-weight: 700;
}

.band {
  padding: 72px 0;
}

.band-lilac {
  background: var(--lilac);
}

.band-paper {
  background: var(--paper);
}

.band-deep {
  background: var(--deep);
  color: #f5f0ff;
}

.band-deep h1,
.band-deep h2,
.band-deep .lead,
.band-deep .faq-q {
  color: #fff;
}

.band-deep .mute,
.band-deep .faq-a {
  color: #ddd6fe;
}

.inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 28px;
}

h1,
h2 {
  margin: 0 0 28px;
  line-height: 1.2;
  font-size: clamp(40px, 4.6vw, 56px);
  font-weight: 750;
  letter-spacing: -0.03em;
}

h1 {
  max-width: 18em;
}

.lead {
  margin: 0 0 32px;
  max-width: 40em;
  font-size: 20px;
}

.mute {
  color: var(--mute);
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 20px 40px;
  background: var(--violet);
  color: #fff;
  text-decoration: none;
  font-size: 20px;
  font-weight: 700;
  border: 2px solid var(--violet);
}

.btn:hover {
  background: #4c1d95;
  border-color: #4c1d95;
  color: #fff;
}

.btn-ghost {
  background: transparent;
  color: var(--violet);
}

.band-deep .btn-ghost {
  color: #fff;
  border-color: #fff;
}

.btn-ghost:hover {
  background: var(--violet);
  color: #fff;
}

.mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  margin: 36px 0 0;
}

.tile {
  background: var(--paper);
  padding: 28px 26px;
  border: 1px solid var(--line);
}

.band-paper .tile {
  background: var(--lilac);
}

.band-deep .tile {
  background: #3b176e;
  border-color: #5b21b6;
  color: #f5f0ff;
}

.tile h3,
.faq-q {
  margin: 0 0 12px;
  font-size: 22px;
  line-height: 1.4;
}

.tile p,
.prose p,
.faq-a {
  margin: 0 0 18px;
}

.tile p:last-child,
.prose p:last-child,
.faq-a:last-child {
  margin-bottom: 0;
}

.mosaic-full {
  margin-top: 28px;
  padding: 32px 28px;
  background: var(--paper);
  border: 1px solid var(--line);
}

.band-paper .mosaic-full {
  background: var(--lilac);
}

.band-deep .mosaic-full {
  background: #3b176e;
  border-color: #5b21b6;
}

.prose {
  max-width: 42em;
}

.prose p {
  font-size: 19px;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: start;
}

.matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 19px;
}

.matrix th,
.matrix td {
  text-align: left;
  padding: 16px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.matrix th {
  color: var(--violet);
  font-weight: 700;
}

.band-deep .matrix th,
.band-deep .matrix td {
  border-bottom-color: #5b21b6;
}

.faq-list {
  display: grid;
  gap: 28px;
}

.faq-item {
  padding: 0 0 8px;
  border-top: 4px solid var(--violet);
  padding-top: 20px;
}

.band-deep .faq-item {
  border-top-color: #c4b5fd;
}

.site-foot {
  background: var(--violet);
  color: #fff;
  padding: 36px 28px 40px;
  font-size: 16px;
  line-height: 1.7;
}

.site-foot-inner {
  max-width: 1120px;
  margin: 0 auto;
}

.site-foot p {
  margin: 0 0 10px;
}

.site-foot p:last-child {
  margin-bottom: 0;
}

@media (max-width: 800px) {
  body {
    font-size: 19px;
  }

  .mast-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .mosaic,
  .split {
    grid-template-columns: 1fr;
  }

  .band {
    padding: 52px 0;
  }

  .btn {
    padding: 18px 28px;
  }
}