:root {
  color-scheme: light;
  --bg: #f6f8fc;
  --panel: #ffffff;
  --text: #172033;
  --muted: #5f6b82;
  --line: #d9deea;
  --accent: #315fba;
  --accent-2: #126c5b;
  --hot: #f07a22;
  --ok: #159267;
  --danger: #d94747;
  --soft-blue: #eef5ff;
  --soft-green: #edf8f4;
  --soft-orange: #fff3e7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.72;
}

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

a:hover {
  text-decoration: underline;
}

.shell {
  max-width: 1040px;
  margin: 0 auto;
  padding: 0 20px;
}

.topbar {
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(12px);
}

.nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-weight: 750;
  color: var(--text);
}

.nav-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 14px;
}

.hero {
  padding: 56px 0 30px;
}

.eyebrow {
  color: var(--accent);
  font-weight: 700;
  margin: 0 0 10px;
}

.notice {
  background: #fff8ed;
  color: #6f3a08;
  border-bottom: 1px solid #ffd49e;
  font-size: 14px;
}

.notice .shell {
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero-panel {
  background:
    radial-gradient(circle at 12% 8%, rgba(49, 95, 186, 0.13), transparent 32%),
    radial-gradient(circle at 86% 18%, rgba(18, 108, 91, 0.12), transparent 30%),
    #ffffff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 42px;
  box-shadow: 0 18px 48px rgba(37, 58, 94, 0.08);
}

h1 {
  font-size: clamp(32px, 5vw, 56px);
  line-height: 1.12;
  margin: 0 0 18px;
  letter-spacing: 0;
}

h2 {
  font-size: 28px;
  line-height: 1.24;
  margin: 0 0 16px;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 8px;
  font-size: 19px;
}

p {
  margin: 0 0 14px;
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 6px 11px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

.button {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--text);
  background: var(--panel);
  font-weight: 650;
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.button.hot {
  background: var(--hot);
  border-color: var(--hot);
  color: #fff;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin: 28px 0 42px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.card.feature {
  min-height: 184px;
}

.icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  background: var(--soft-blue);
  color: var(--accent);
  font-weight: 800;
  margin-bottom: 14px;
}

.card p,
.article-meta,
.muted {
  color: var(--muted);
}

.content {
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 44px 0;
}

.section {
  padding: 44px 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 22px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.step {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.step-number {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: #fff;
  font-weight: 800;
  margin-bottom: 10px;
}

.pricing {
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid rgba(49, 95, 186, 0.22);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 18px 48px rgba(37, 58, 94, 0.1);
}

.pricing-top {
  padding: 14px 20px;
  background: linear-gradient(120deg, #126c5b, #315fba);
  color: #fff;
  font-weight: 750;
  text-align: center;
}

.pricing-body {
  padding: 28px;
  text-align: center;
}

.price-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin: 18px 0 20px;
}

.price {
  font-size: 44px;
  line-height: 1;
  font-weight: 850;
  color: var(--accent);
}

.tag {
  background: var(--soft-orange);
  color: #91430c;
  border: 1px solid #ffd9b5;
  border-radius: 999px;
  padding: 5px 10px;
  font-weight: 750;
  font-size: 13px;
}

.compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.compare .bad {
  border-color: #f0c4c4;
  background: #fffafa;
}

.compare .good {
  border-color: #bbdfd1;
  background: #fbfffd;
}

.list-clean {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
}

.list-clean li {
  margin-bottom: 9px;
  color: var(--muted);
}

.check {
  color: var(--ok);
  font-weight: 800;
}

.cross {
  color: var(--danger);
  font-weight: 800;
}

.store-cta {
  background: #10233f;
  color: #fff;
  padding: 36px 0;
}

.store-cta p {
  color: rgba(255, 255, 255, 0.78);
}

.store-cta .button {
  background: #fff;
  color: #10233f;
  border-color: #fff;
}

.article {
  max-width: 820px;
}

.article ul {
  padding-left: 22px;
}

.article li {
  margin-bottom: 8px;
}

.footer {
  padding: 34px 0 46px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 0;
  }

  .hero {
    padding-top: 44px;
  }

  .hero-panel {
    padding: 26px 20px;
  }

  .grid,
  .steps,
  .compare {
    grid-template-columns: 1fr;
  }
}