:root {
  --ink: #17212b;
  --muted: #5e6b76;
  --line: #d8e0e7;
  --panel: #ffffff;
  --soft: #f4f7f9;
  --primary: #1d6f98;
  --primary-dark: #12455f;
  --accent: #f59e0b;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--soft);
  line-height: 1.55;
}

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

a:hover {
  text-decoration: underline;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 16px 32px;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 800;
  color: var(--primary-dark);
}

nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

nav form {
  margin: 0;
}

button,
.button {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 6px;
  padding: 9px 14px;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
}

.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  font-weight: 700;
}

main {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.hero {
  display: grid;
  align-items: end;
  min-height: 310px;
  margin-bottom: 28px;
  padding: 42px;
  border-radius: 8px;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(15, 61, 94, 0.94), rgba(15, 61, 94, 0.58)),
    url('/demo-hero.svg');
  background-color: var(--primary-dark);
}

.hero h1 {
  max-width: 760px;
  margin: 0 0 12px;
  font-size: 42px;
  line-height: 1.1;
}

.hero p {
  max-width: 700px;
  margin: 0;
}

.eyebrow,
.meta {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #fbd38d;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 18px;
}

.post-card,
.panel,
.article {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 24px rgba(15, 35, 50, 0.06);
}

.post-card {
  overflow: hidden;
}

.post-card img,
.image-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #dce8ef;
}

.image-placeholder {
  display: grid;
  place-items: center;
  color: var(--primary-dark);
  font-weight: 800;
}

.post-card div {
  padding: 18px;
}

.post-card h2 {
  margin: 0 0 8px;
  font-size: 20px;
  line-height: 1.25;
}

.post-card p {
  margin: 0;
}

.panel,
.article {
  padding: 28px;
}

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 22px;
}

.section-head h1,
.panel h1,
.article h1 {
  margin: 0 0 10px;
}

.auth-panel {
  max-width: 460px;
  margin: 56px auto;
}

.form-stack {
  display: grid;
  gap: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

label {
  display: grid;
  gap: 7px;
  font-weight: 700;
}

input,
textarea,
select {
  width: 100%;
  border: 1px solid #bdc9d3;
  border-radius: 6px;
  padding: 11px 12px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}

textarea {
  resize: vertical;
}

table {
  width: 100%;
  border-collapse: collapse;
}

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

th {
  color: var(--primary-dark);
  font-size: 13px;
  text-transform: uppercase;
}

.article {
  max-width: 860px;
  margin: 0 auto;
}

.article h1 {
  font-size: 40px;
  line-height: 1.12;
}

.lead {
  color: var(--muted);
  font-size: 19px;
}

.article-image {
  width: 100%;
  margin: 18px 0;
  border-radius: 8px;
}

.article-body p {
  margin: 0 0 16px;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

.tags span {
  display: inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  background: #e8f1f5;
  color: var(--primary-dark);
  font-size: 13px;
  font-weight: 700;
}

@media (max-width: 700px) {
  .topbar,
  .section-head,
  nav {
    align-items: flex-start;
    flex-direction: column;
  }

  main {
    width: min(100% - 24px, 1120px);
    padding-top: 20px;
  }

  .hero {
    min-height: 260px;
    padding: 28px;
  }

  .hero h1,
  .article h1 {
    font-size: 30px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}