:root {
  --bg: #f4f6f3;
  --card: #ffffff;
  --ink: #1d2a23;
  --muted: #536257;
  --accent: #0f766e;
  --accent-strong: #115e59;
  --line: #d6e1d9;
  --highlight: #e7f6f2;
  --danger: #7f1d1d;
  --danger-bg: #fee2e2;
  --shadow: 0 14px 34px rgba(15, 33, 23, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Manrope", "IBM Plex Sans", "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1300px 700px at 85% -5%, #d5ede7 0%, transparent 56%),
    radial-gradient(900px 500px at 0% 0%, #e9efe4 0%, transparent 52%),
    var(--bg);
  min-height: 100vh;
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

.shell {
  width: min(1100px, calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  padding: 1rem 0 0.2rem;
}

.site-header nav {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.menu {
  display: flex;
  gap: 0.7rem;
  align-items: center;
}

.menu a {
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
  background: color-mix(in srgb, var(--card) 85%, var(--accent) 15%);
  border: 1px solid var(--line);
  font-weight: 600;
}

.hero {
  padding: 2.2rem 0 1rem;
}

.hero-box {
  background: linear-gradient(140deg, #f9fffc 0%, #eef8f4 44%, #e2f0eb 100%);
  border: 1px solid #cee0d5;
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 1.6rem;
}

.hero h1 {
  margin: 0 0 0.7rem;
  line-height: 1.15;
  font-size: clamp(1.5rem, 4vw, 2.35rem);
}

.hero p {
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.quick-search {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.6rem;
}

input[type="search"],
input[type="text"] {
  border: 1px solid #b9cfc1;
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
  width: 100%;
  font: inherit;
  background: #ffffff;
}

textarea {
  border: 1px solid #b9cfc1;
  border-radius: 12px;
  padding: 0.8rem 0.9rem;
  width: 100%;
  font: inherit;
  background: #ffffff;
}

button,
.button {
  display: inline-block;
  border: none;
  border-radius: 12px;
  padding: 0.8rem 1.05rem;
  background: var(--accent);
  color: #ffffff;
  font-weight: 700;
  cursor: pointer;
}

button:hover,
.button:hover {
  background: var(--accent-strong);
  text-decoration: none;
}

.grid {
  display: grid;
  gap: 0.9rem;
}

.grid.cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: 0 4px 16px rgba(15, 29, 23, 0.05);
  padding: 1rem;
}

.card h3,
.card h2 {
  margin-top: 0;
  line-height: 1.2;
}

.meta {
  color: var(--muted);
  font-size: 0.93rem;
}

.section-title {
  margin: 1.8rem 0 0.8rem;
  font-size: 1.22rem;
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 290px;
  gap: 1rem;
  align-items: start;
}

.article-main {
  background: var(--card);
  border-radius: 18px;
  border: 1px solid var(--line);
  padding: 1.15rem;
  box-shadow: var(--shadow);
}

.article-main h1 {
  line-height: 1.2;
  margin-top: 0;
}

.article-main blockquote {
  margin: 0 0 1rem;
  border-left: 4px solid var(--accent);
  padding: 0.2rem 0.8rem;
  background: var(--highlight);
  border-radius: 8px;
}

.article-main img {
  max-width: 100%;
  border-radius: 12px;
}

.sidebar {
  display: grid;
  gap: 0.8rem;
}

.danger-card {
  background: var(--danger-bg);
  border: 1px solid #fecaca;
  border-radius: 14px;
  padding: 0.9rem;
}

.danger-card h3 {
  margin: 0 0 0.45rem;
  color: var(--danger);
}

.list-clean {
  margin: 0;
  padding-left: 1rem;
}

.list-clean li + li {
  margin-top: 0.35rem;
}

.topic-pill {
  display: inline-flex;
  margin-top: 0.4rem;
  font-size: 0.83rem;
  border-radius: 999px;
  padding: 0.25rem 0.55rem;
  border: 1px solid #c8dfd5;
  background: #ecfaf4;
  color: #134e4a;
}

.footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  padding: 1.1rem 0 1.8rem;
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 960px) {
  .grid.cols-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .shell {
    width: min(1100px, calc(100% - 1rem));
  }
  .quick-search {
    grid-template-columns: 1fr;
  }
  .grid.cols-3,
  .grid.cols-2 {
    grid-template-columns: 1fr;
  }
  .hero-box {
    border-radius: 16px;
    padding: 1rem;
  }
}