:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --paper: #ffffff;
  --ink: #151821;
  --muted: #5d6677;
  --line: #dfe6f1;
  --brand: #1f6feb;
  --brand-2: #12a875;
  --accent: #f59e0b;
  --soft: #eef5ff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: linear-gradient(180deg, #ffffff 0%, var(--bg) 44%, #ffffff 100%);
  color: var(--ink);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.72;
  letter-spacing: 0;
}

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

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(1080px, calc(100% - 36px));
  margin: 0 auto;
}

.top {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(14px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  min-height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 800;
}

.mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-2));
  font-weight: 900;
}

.links {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-size: 14px;
}

.hero {
  padding: 56px 0 28px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 34px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--brand);
  font-weight: 800;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 5vw, 60px);
  line-height: 1.08;
  letter-spacing: 0;
}

.lead {
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
}

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

.btn {
  min-height: 42px;
  padding: 9px 16px;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--ink);
  background: #fff;
  font-weight: 800;
}

.btn.primary {
  color: #fff;
  border-color: var(--brand);
  background: var(--brand);
}

.shot {
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  background: #fff;
  box-shadow: 0 20px 54px rgba(29, 54, 92, .12);
}

.shot img {
  display: block;
  width: 100%;
  height: auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 22px 0 46px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 18px;
  min-height: 210px;
}

.card h2 {
  margin: 0 0 10px;
  font-size: 20px;
  line-height: 1.35;
}

.card p {
  color: var(--muted);
  margin: 0 0 14px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--soft);
  color: #28548d;
  font-size: 13px;
  font-weight: 700;
}

.article {
  max-width: 820px;
  padding: 40px 0 70px;
}

.article h1 {
  font-size: clamp(30px, 4.6vw, 48px);
}

.meta {
  margin: 14px 0 24px;
  color: var(--muted);
  font-size: 14px;
}

.article h2 {
  margin-top: 34px;
  font-size: 25px;
  line-height: 1.35;
}

.article h3 {
  margin: 24px 0 8px;
  font-size: 20px;
  line-height: 1.35;
}

.article p,
.article li {
  font-size: 17px;
}

.article blockquote {
  margin: 24px 0;
  border-left: 4px solid var(--brand);
  background: var(--soft);
  padding: 14px 18px;
  color: #24405f;
}

.note {
  border: 1px solid #f4d48a;
  background: #fff8e6;
  border-radius: 8px;
  padding: 14px 16px;
  color: #6f4b00;
}

.cta {
  margin-top: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(135deg, #eef5ff, #f2fbf7);
  padding: 22px;
}

.footer {
  border-top: 1px solid var(--line);
  padding: 26px 0;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 840px) {
  .hero,
  .grid {
    grid-template-columns: 1fr;
  }

  .links {
    display: none;
  }

  .hero {
    padding-top: 34px;
  }
}