:root {
  --brand: #0f766e;
  --brand-dark: #0b5750;
  --ink: #172033;
  --ink-soft: #526171;
  --muted: #7b8794;
  --line: #e3e9ef;
  --bg: #f6f8fb;
  --card: #ffffff;
  --soft: #eef7f5;
  --shadow: 0 1px 2px rgba(20, 32, 44, .04), 0 14px 32px rgba(20, 32, 44, .07);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

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

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px max(20px, calc((100vw - 1120px) / 2));
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(8px);
}

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

.brand img { width: 30px; height: 30px; border-radius: 8px; }
nav { display: flex; gap: 16px; font-size: 14px; }
nav a { color: var(--ink-soft); }

main {
  max-width: 1120px;
  margin: 0 auto;
  padding: 36px 20px 64px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr);
  gap: 28px;
  align-items: stretch;
  padding: 24px 0 18px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--brand);
  font-weight: 800;
  font-size: 14px;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 5vw, 52px);
  line-height: 1.12;
  letter-spacing: 0;
}

.lead {
  margin: 18px 0 0;
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 17px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.primary, .secondary, .card a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 42px;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 700;
}

.primary, .card a {
  color: #fff;
  background: var(--brand);
}

.primary:hover, .card a:hover { background: var(--brand-dark); }

.secondary {
  color: var(--brand);
  background: #fff;
  border: 1px solid var(--line);
}

.summary {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 20px;
}

.summary div {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.summary div:last-child { border-bottom: none; }
.summary b { display: block; margin-bottom: 4px; }
.summary span { color: var(--ink-soft); font-size: 14px; }

.section {
  margin-top: 36px;
}

.section h2 {
  margin: 0;
  font-size: 24px;
}

.section-note {
  color: var(--ink-soft);
  margin: 8px 0 18px;
}

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

.card, .info-grid > div, .contact {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.card {
  padding: 20px;
}

.tag {
  display: inline-flex;
  padding: 4px 9px;
  border-radius: 999px;
  color: var(--brand);
  background: var(--soft);
  font-size: 12px;
  font-weight: 800;
}

.tag.member {
  color: #1d5fd1;
  background: #eef4ff;
}

.card h3 {
  margin: 14px 0 8px;
  font-size: 19px;
}

.price {
  margin: 0;
  font-size: 30px;
  line-height: 1;
  font-weight: 750;
  color: var(--ink);
}

.card p:not(.price) {
  color: var(--ink-soft);
  min-height: 76px;
}

.card a {
  width: 100%;
  margin-top: 8px;
}

.availability {
  width: 100%;
  min-height: 40px;
  margin-top: 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: #f7f9f8;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

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

.flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.flow div {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 18px;
}

.flow b {
  display: block;
  margin-bottom: 8px;
}

.flow span {
  color: var(--ink-soft);
  font-size: 14px;
}

.info-grid > div {
  padding: 18px;
}

.info-grid h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.info-grid p, .contact p {
  color: var(--ink-soft);
  margin: 0;
}

.contact {
  padding: 20px;
}

.contact p + p { margin-top: 8px; }

footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px 20px 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

footer a { color: var(--muted); }

@media (max-width: 820px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  nav { flex-wrap: wrap; }
  .hero, .grid, .info-grid, .flow { grid-template-columns: 1fr; }
  main { padding-top: 24px; }
  .card p:not(.price) { min-height: auto; }
}