:root {
  --bg: #f5f7f8;
  --panel: #ffffff;
  --ink: #17202a;
  --muted: #5d6d7e;
  --line: #d5dde5;
  --nav: #18232f;
  --accent: #126c72;
  --soft: #e7f3f4;
  --warn: #8a560b;
  --warn-bg: #fff0d9;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.55;
}

header {
  background: var(--nav);
  color: #ffffff;
  padding: 34px 42px;
  border-bottom: 4px solid var(--accent);
}

header h1 {
  margin: 0 0 8px;
  font-size: 34px;
}

header p {
  margin: 0;
  color: #dbe5ee;
  max-width: 980px;
}

nav {
  max-width: 1180px;
  margin: 0 auto;
  padding: 14px 24px 0;
}

nav a {
  display: inline-block;
  margin: 0 10px 10px 0;
  padding: 7px 10px;
  color: var(--accent);
  background: var(--soft);
  border-radius: 4px;
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 24px;
}

section {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 22px;
  margin-bottom: 20px;
}

h2 {
  margin: 0 0 12px;
  font-size: 24px;
}

h3 {
  margin: 24px 0 8px;
  font-size: 19px;
  color: #12343b;
}

p {
  margin: 8px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 14px;
}

th,
td {
  border: 1px solid var(--line);
  padding: 8px 10px;
  vertical-align: top;
}

th {
  background: #eef2f5;
  text-align: left;
}

code {
  background: #eef2f5;
  padding: 1px 5px;
  border-radius: 4px;
}

.hero {
  display: grid;
  grid-template-columns: 1fr 0.75fr;
  gap: 22px;
  align-items: center;
}

.placeholder {
  min-height: 250px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--muted);
  background: #f8fafb;
  border: 1px dashed #aeb9c4;
  border-radius: 6px;
  padding: 20px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

.card {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 14px;
  background: #fbfcfd;
}

.card h3 {
  margin-top: 0;
  color: var(--accent);
}

.tag {
  display: inline-block;
  background: var(--soft);
  color: var(--accent);
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 700;
}

.verify {
  background: var(--warn-bg);
  color: var(--warn);
}

.small {
  color: var(--muted);
  font-size: 13px;
}

.tab-section {
  padding-top: 10px;
  border-top: 1px solid var(--line);
  margin-top: 24px;
}

.tab-shot {
  width: 100%;
  display: block;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f8fafb;
  margin: 12px 0 14px;
}

.plan td:first-child {
  font-weight: 700;
  white-space: nowrap;
}

footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px 30px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 800px) {
  header {
    padding: 24px;
  }

  main {
    padding: 14px;
  }

  .hero {
    grid-template-columns: 1fr;
  }
}