:root {
  --bg: #f7fbff;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #475569;
  --brand: #1e6fbf;
  --brand2: #0b4f8a;
  --border: rgba(15, 23, 42, 0.12);
  --shadow: 0 10px 30px rgba(2, 8, 23, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family:
    ui-sans-serif,
    system-ui,
    -apple-system,
    Segoe UI,
    Roboto,
    Helvetica,
    Arial,
    "Apple Color Emoji",
    "Segoe UI Emoji";
  color: var(--text);
  background: radial-gradient(
      1000px 600px at 20% -10%,
      rgba(30, 111, 191, 0.22),
      transparent 60%
    ),
    var(--bg);
  background-repeat: no-repeat;
  line-height: 1.6;
}

a {
  color: inherit;
}

.container {
  max-width: 760px;
  margin: 0 auto;
  padding: 28px 18px 60px;
}

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 0 22px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.logo {
  flex: none;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.nav a {
  text-decoration: none;
  font-size: 14px;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.65);
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 26px;
}

h1 {
  margin: 0 0 12px;
  font-size: 36px;
  line-height: 1.12;
  letter-spacing: -0.5px;
}

h2 {
  margin: 28px 0 8px;
  font-size: 22px;
  letter-spacing: -0.2px;
}

article p,
article li,
.lead {
  color: var(--muted);
  font-size: 17px;
}

article a {
  color: var(--brand2);
}

.date {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}

.table-wrap {
  overflow-x: auto;
}

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

th,
td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.article-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.article-list li {
  padding: 16px;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.7);
}

.article-list h2 {
  margin: 0 0 6px;
  font-size: 18px;
}

.article-list p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.video {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 16px 0;
  padding: 12px 16px;
  border: 0;
  border-radius: 16px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--text), var(--brand2));
  color: white;
  text-decoration: none;
}

iframe.video {
  display: block;
  padding: 0;
}

.video-thumb {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-play {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: white;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1;
  box-shadow: var(--shadow);
}

.video-play::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 54%;
  transform: translate(-50%, -50%);
  border-style: solid;
  border-width: 11px 0 11px 18px;
  border-color: transparent transparent transparent var(--brand2);
}

.video-title,
.video-note {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.cta h2 {
  margin-top: 0;
}

.cta {
  margin-top: 28px;
  padding: 18px;
  border-radius: 16px;
  background: rgba(30, 111, 191, 0.1);
  border: 1px solid rgba(30, 111, 191, 0.25);
}

.cta p {
  margin: 0 0 12px;
  color: var(--text);
}

.btn {
  display: inline-flex;
  padding: 12px 16px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  background: linear-gradient(135deg, var(--brand), #3aa7ff);
  color: white;
}

footer {
  margin-top: 18px;
  padding: 18px 4px 0;
  color: var(--muted);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  flex-wrap: wrap;
}

.small-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

@media (max-width: 900px) {
  h1 {
    font-size: 30px;
  }
}

@media (max-width: 480px) {
  .video-play {
    width: 44px;
    height: 44px;
  }
  .video-play::after {
    border-width: 9px 0 9px 15px;
  }
}