:root {
  color-scheme: light;
  --ink: #18201f;
  --muted: #5b6662;
  --line: #d8dfdc;
  --paper: #fbfcfb;
  --soft: #eef4f1;
  --accent: #126b5f;
  --accent-strong: #0b4c43;
  --warm: #d96d36;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.75;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  padding: 0 24px;
  background: rgba(251, 252, 251, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.brand {
  font-weight: 800;
  text-decoration: none;
  font-size: 1.2rem;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 0.95rem;
}

.nav a {
  color: var(--muted);
  text-decoration: none;
}

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

.hero {
  min-height: 72vh;
  display: grid;
  align-items: center;
  padding: 72px 24px 64px;
  background:
    linear-gradient(120deg, rgba(18, 107, 95, 0.9), rgba(24, 32, 31, 0.72)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1200' height='720' viewBox='0 0 1200 720'%3E%3Crect width='1200' height='720' fill='%2318201f'/%3E%3Cg fill='none' stroke='%23f2f7f5' stroke-opacity='.16' stroke-width='2'%3E%3Cpath d='M80 610C210 470 260 500 390 350S620 180 760 270s240 84 360-70'/%3E%3Cpath d='M20 210c180 70 320 50 420-60s210-120 330-40 230 95 390 10'/%3E%3Cpath d='M140 690c120-80 210-90 320-30s210 30 300-60 200-120 340-70'/%3E%3C/g%3E%3Cg fill='%23d96d36' fill-opacity='.75'%3E%3Ccircle cx='230' cy='450' r='8'/%3E%3Ccircle cx='720' cy='265' r='8'/%3E%3Ccircle cx='990' cy='520' r='8'/%3E%3C/g%3E%3C/svg%3E");
  background-size: cover;
  background-position: center;
  color: #fff;
}

.hero-inner,
.section {
  width: min(1080px, 100%);
  margin: 0 auto;
}

.hero-inner {
  padding-bottom: 24px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--warm);
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
  font-size: 0.78rem;
}

.hero .eyebrow {
  color: #ffb28b;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 780px;
  margin: 0;
  font-size: clamp(2.4rem, 8vw, 4.8rem);
  line-height: 1.08;
}

.lead {
  max-width: 720px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: 6px;
  text-decoration: none;
  font-weight: 700;
}

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

.button.secondary {
  color: #fff;
}

.section {
  padding: 72px 24px;
}

.band {
  width: 100%;
  max-width: none;
  padding-right: max(24px, calc((100% - 1080px) / 2));
  padding-left: max(24px, calc((100% - 1080px) / 2));
  background: var(--soft);
  border-block: 1px solid var(--line);
}

.section-head h2 {
  margin: 0;
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  line-height: 1.2;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
}

.card,
.article-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.card {
  padding: 24px;
}

.card h3,
.article-list h3 {
  margin: 0 0 10px;
  line-height: 1.35;
}

.article-list h3 a {
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.card p,
.article-list p,
.operation p {
  margin: 0;
  color: var(--muted);
}

.article-list {
  display: grid;
  gap: 14px;
  margin-top: 28px;
}

.article-list article {
  padding: 22px;
}

.tag {
  display: inline-flex;
  margin-bottom: 10px;
  color: var(--accent);
  font-weight: 800;
  font-size: 0.78rem;
}

.operation {
  max-width: 820px;
  margin-top: 24px;
}

.operation ul {
  margin: 22px 0 0;
  padding-left: 1.2rem;
}

.operation li + li {
  margin-top: 8px;
}

.search-box {
  display: grid;
  gap: 8px;
  margin-top: 28px;
  max-width: 680px;
}

.search-box label {
  color: var(--muted);
  font-weight: 800;
}

.search-box input {
  min-height: 48px;
  width: 100%;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  justify-content: space-between;
  padding: 24px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

.footer p {
  margin: 0;
}

.article {
  width: min(900px, 100%);
  margin: 0 auto;
  padding: 64px 24px 80px;
}

.article-header {
  padding-bottom: 28px;
  border-bottom: 1px solid var(--line);
}

.article-header h1 {
  max-width: 860px;
  color: var(--ink);
  font-size: clamp(2rem, 5vw, 3.4rem);
}

.article-lead {
  max-width: 820px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.article-meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 28px 0 0;
}

.article-meta div {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.article-meta dt {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
}

.article-meta dd {
  margin: 4px 0 0;
}

.article-body {
  margin-top: 36px;
}

.article-body section + section,
.related {
  margin-top: 42px;
}

.article-body h2 {
  margin: 0 0 14px;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.3;
}

.article-body p,
.article-body li {
  color: var(--muted);
}

.article-body code {
  padding: 0.08em 0.32em;
  border-radius: 4px;
  background: var(--soft);
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.article-body pre {
  overflow-x: auto;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #18201f;
  color: #fff;
}

.article-body pre code {
  padding: 0;
  background: transparent;
  color: inherit;
}

.related {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--soft);
}

.related h2 {
  margin-bottom: 8px;
}

.related a {
  color: var(--accent-strong);
  font-weight: 800;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding: 12px 18px;
  }

  .nav {
    width: 100%;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .hero {
    min-height: 68vh;
    padding: 52px 18px;
  }

  .section {
    padding: 52px 18px;
  }

  .band {
    padding-right: 18px;
    padding-left: 18px;
  }

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

  .button {
    width: 100%;
  }

  .article {
    padding: 44px 18px 60px;
  }

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