:root {
  --ink: #17202a;
  --muted: #657285;
  --line: #d9e1ea;
  --paper: #ffffff;
  --soft: #f4f7fb;
  --accent: #0b7a75;
  --accent-strong: #065f5b;
  --warm: #b56b28;
  --shadow: 0 12px 34px rgba(23, 32, 42, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: #fbfcfe;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  line-height: 1.72;
}

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

a:hover {
  color: var(--accent-strong);
}

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
}

.brand-mark {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--accent);
  font-weight: 800;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.35;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 14px;
  font-size: 14px;
}

.nav a {
  color: var(--muted);
}

.nav a.active,
.nav a:hover {
  color: var(--accent-strong);
}

.hero {
  background: linear-gradient(135deg, #eef8f7 0%, #fdf8f2 55%, #f7f9fc 100%);
  border-bottom: 1px solid var(--line);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
  gap: 36px;
  align-items: center;
  min-height: 420px;
  padding: 54px 0;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--warm);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  line-height: 1.25;
  letter-spacing: 0;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(30px, 5vw, 52px);
}

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

h3 {
  margin: 26px 0 10px;
  font-size: 20px;
}

.hero-text,
.page-title p,
.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.button,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #fff;
  font: inherit;
  cursor: pointer;
}

.button.primary,
button.primary {
  border-color: var(--accent);
  color: #fff;
  background: var(--accent);
}

.hero-panel,
.article-card,
.category-tile,
.cta-box,
.admin-panel,
.login-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.hero-panel {
  display: grid;
  gap: 12px;
  padding: 24px;
}

.hero-panel span {
  padding: 10px 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.section {
  padding: 42px 0;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.category-grid,
.article-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.category-tile {
  display: grid;
  gap: 10px;
  padding: 20px;
  color: var(--ink);
}

.category-tile span {
  color: var(--muted);
  font-size: 14px;
}

.article-card {
  display: flex;
  flex-direction: column;
  min-height: 250px;
  padding: 22px;
}

.article-card h2 {
  font-size: 20px;
}

.article-card p {
  color: var(--muted);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  color: var(--muted);
  font-size: 13px;
}

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

.tags a {
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--muted);
  font-size: 13px;
}

.page-title {
  padding: 46px 0 22px;
}

.article-detail {
  max-width: 860px;
  padding: 46px 0 20px;
}

.article-detail h1 {
  font-size: clamp(28px, 4.4vw, 44px);
}

.content-body {
  margin-top: 30px;
  font-size: 17px;
}

.content-body p,
.content-body li {
  color: #2e3b4a;
}

.content-body ul {
  padding-left: 22px;
}

.cta-box {
  margin-top: 34px;
  padding: 24px;
  background: #f7fbfb;
}

.site-footer {
  margin-top: 38px;
  padding: 34px 0;
  border-top: 1px solid var(--line);
  background: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
}

.footer-grid p {
  max-width: 680px;
  color: var(--muted);
}

.footer-grid a {
  display: block;
  margin: 0 0 8px;
}

.admin-body {
  background: var(--soft);
}

.admin-shell {
  width: min(1100px, calc(100% - 28px));
  margin: 28px auto;
}

.admin-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.admin-top form {
  margin-left: auto;
}

.admin-panel,
.login-card {
  padding: 24px;
}

.login-card {
  width: min(420px, calc(100% - 28px));
  margin: 10vh auto 0;
}

label {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
  font-weight: 700;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 12px;
  color: var(--ink);
  background: #fff;
  font: inherit;
}

textarea {
  resize: vertical;
}

.form-error {
  padding: 10px 12px;
  border-radius: 8px;
  color: #8a1f1f;
  background: #fff0f0;
}

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

.admin-table th,
.admin-table td {
  padding: 14px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.admin-table small {
  display: block;
  color: var(--muted);
}

.row-actions {
  display: flex;
  gap: 10px;
}

.row-actions form {
  margin: 0;
}

.row-actions button {
  min-height: auto;
  padding: 0;
  border: 0;
  color: #a13232;
  background: transparent;
}

@media (max-width: 860px) {
  .header-inner,
  .hero-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .header-inner {
    align-items: flex-start;
    padding: 14px 0;
  }

  .nav {
    justify-content: flex-start;
  }

  .hero-grid {
    min-height: auto;
    padding: 38px 0;
  }

  .category-grid,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .admin-table {
    display: block;
    overflow-x: auto;
  }
}