@font-face {
  font-family: "Quicksand";
  src: url("assets/fonts/quicksand-regular.ttf") format("truetype");
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: "Quicksand";
  src: url("assets/fonts/quicksand-medium.ttf") format("truetype");
  font-weight: 500 600;
  font-display: swap;
}
@font-face {
  font-family: "Quicksand";
  src: url("assets/fonts/quicksand-bold.ttf") format("truetype");
  font-weight: 700 900;
  font-display: swap;
}

* { box-sizing: border-box; margin: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: "Quicksand", system-ui, sans-serif;
  color: #20232a;
  background: #fbfdfb;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px max(24px, calc((100% - 720px) / 2));
  background: rgba(251, 253, 251, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #e1e8e1;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #06271c;
  font-weight: 800;
  font-size: 1.1rem;
}

.brand img {
  width: 32px;
  height: 32px;
}

nav {
  display: flex;
  gap: 20px;
}

nav a {
  color: #66706b;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.88rem;
  padding: 6px 12px;
  border-radius: 8px;
  transition: background 0.15s;
}

nav a:hover {
  background: #e8f8ef;
  color: #117355;
}

nav a[aria-current="page"] {
  background: #117355;
  color: white;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 80px;
}

h1 {
  font-size: 2rem;
  color: #06271c;
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.meta {
  color: #66706b;
  font-size: 0.88rem;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid #e1e8e1;
}

h2 {
  font-size: 1.2rem;
  color: #083a2a;
  margin-top: 36px;
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1rem;
  color: #083a2a;
  margin-top: 22px;
  margin-bottom: 10px;
}

p {
  margin-bottom: 14px;
  color: #3d5d4c;
  font-size: 0.94rem;
}

section {
  margin-bottom: 12px;
}

ul {
  padding-left: 24px;
  margin-bottom: 14px;
}

ol {
  padding-left: 24px;
  margin-bottom: 14px;
}

li {
  margin-bottom: 8px;
  color: #3d5d4c;
  font-size: 0.94rem;
}

li strong {
  color: #083a2a;
}

.deletion-section {
  scroll-margin-top: 88px;
  margin-top: 34px;
  padding: 24px;
  border: 2px solid #117355;
  border-radius: 18px;
  background: #f5fcf8;
}

.deletion-section h2 {
  margin-top: 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 14px 0 18px;
  font-size: 0.88rem;
}

th, td {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid #e1e8e1;
}

th {
  background: #f5fcf8;
  color: #083a2a;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
}

td {
  color: #3d5d4c;
}

a {
  color: #117355;
  text-decoration: underline;
  text-decoration-color: rgba(17, 115, 85, 0.3);
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-color: #117355;
}

footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
  border-top: 1px solid #e1e8e1;
  text-align: center;
}

footer p {
  color: #66706b;
  font-size: 0.82rem;
}

@media (max-width: 600px) {
  header {
    padding: 14px 16px;
  }

  main {
    padding: 32px 16px 60px;
  }

  h1 {
    font-size: 1.6rem;
  }

  table {
    font-size: 0.82rem;
  }

  th, td {
    padding: 8px 10px;
  }
}