:root {
  color-scheme: light;
  --sakura-50: #fff7f9;
  --sakura-100: #fde4ec;
  --sakura-200: #f9cad8;
  --sakura-300: #f7b2c4;
  --sakura-400: #f08aa7;
  --sakura-500: #e9658c;
  --ink-900: #2b1b1f;
  --ink-700: #4a343b;
  --ink-500: #6c4a53;
  --ink-200: #eadce1;
  --white: #ffffff;
  --shadow: 0 20px 45px rgba(233, 101, 140, 0.15);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  background: linear-gradient(180deg, var(--sakura-50), #fff);
  color: var(--ink-900);
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 8%;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--sakura-100);
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.brand-mark {
  font-size: 32px;
  background: var(--sakura-200);
  color: var(--ink-900);
  border-radius: 50%;
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  box-shadow: var(--shadow);
}

.site-header nav {
  display: flex;
  gap: 18px;
  align-items: center;
}

.site-header nav a {
  color: var(--ink-700);
  text-decoration: none;
  font-weight: 600;
}

.site-header nav a:hover {
  color: var(--sakura-500);
}

.content {
  padding: 40px 8% 80px;
}

.card {
  background: var(--white);
  border-radius: 20px;
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 24px;
}

.section-title {
  font-size: 22px;
  margin: 0 0 16px;
  color: var(--ink-700);
}

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

input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--ink-200);
  font-size: 14px;
  font-family: inherit;
}

button {
  background: var(--sakura-400);
  color: #fff;
  border: none;
  padding: 10px 18px;
  border-radius: 12px;
  font-weight: 600;
  cursor: pointer;
}

button.secondary {
  background: #fff;
  color: var(--ink-700);
  border: 1px solid var(--sakura-300);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: var(--sakura-100);
  color: var(--ink-700);
}

.tag.level-n1 { background: #f9d5dd; color: #b44059; }
.tag.level-n2 { background: #f6e3b4; color: #9b650a; }
.tag.level-n3 { background: #d5f0e4; color: #1f7c63; }
.tag.level-n4 { background: #d5e9f7; color: #2f6f9b; }
.tag.level-n5 { background: #ede3fb; color: #6b4fa5; }

.word-list {
  display: grid;
  gap: 16px;
}

.word-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  align-items: center;
  padding: 16px;
  border-radius: 16px;
  background: var(--sakura-50);
  border: 1px solid var(--sakura-100);
}

.word-item h3 {
  margin: 0 0 6px;
  font-size: 20px;
}

.word-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.notice {
  padding: 12px 16px;
  background: var(--sakura-100);
  border-radius: 12px;
  color: var(--ink-700);
}

.site-footer {
  text-align: center;
  padding: 30px 10px 40px;
  color: var(--ink-500);
}

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

.table th, .table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--sakura-100);
  text-align: left;
}

@media (max-width: 860px) {
  .site-header {
    flex-direction: column;
    gap: 16px;
  }

  .site-header nav {
    flex-wrap: wrap;
    justify-content: center;
  }

  .word-item {
    grid-template-columns: 1fr;
  }
}