/* =========================================================
   言乃葉栞 公開サイト — Dashboard と同じ和モダンの配色を使う
   ========================================================= */

:root {
  color-scheme: light dark;
  --bg: #f3efe6;
  --bg-grad: radial-gradient(1200px 620px at 100% -10%, #efeadf 0%, #f3efe6 55%, #f0ebe0 100%);
  --panel: #fffdf8;
  --panel-2: #f7f3ea;
  --line: #e5ddcd;
  --text: #232a30;
  --muted: #6f7680;
  --accent: #3a5a86;
  --accent-strong: #2b466b;
  --accent-soft: #e9eef6;
  --accent-line: #c3d0e4;
  --on-accent: #ffffff;
  --side-bg: #1b2230;
  --shadow: 0 12px 30px -12px rgba(28, 34, 45, 0.22);
  --radius: 12px;
  --font:
    "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", "Noto Sans JP",
    ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #10141c;
    --bg-grad: radial-gradient(1200px 620px at 100% -10%, #172033 0%, #10141c 60%);
    --panel: #171d28;
    --panel-2: #1d2531;
    --line: #2a3342;
    --text: #e8ecf3;
    --muted: #9aa6b8;
    --accent: #7ea2d8;
    --accent-strong: #9bb8e4;
    --accent-soft: #1e2a3d;
    --accent-line: #35486a;
    --on-accent: #10141c;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  background-image: var(--bg-grad);
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
}

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

.wrap {
  width: min(920px, calc(100% - 2.5rem));
  margin: 0 auto;
}

/* --- header --- */
.site-header {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  z-index: 5;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 0;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  text-decoration: none;
  color: var(--text);
  margin-right: auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 2rem;
  height: 2rem;
  border-radius: 9px;
  background: var(--side-bg);
  color: #f6e7bf;
  font-weight: 700;
}

.site-nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.94rem;
}

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

/* --- buttons --- */
.button {
  display: inline-block;
  padding: 0.62rem 1.2rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  text-decoration: none;
  font-weight: 700;
  border: 1px solid var(--accent);
}

.button:hover { background: var(--accent-strong); border-color: var(--accent-strong); }

.button.ghost {
  background: transparent;
  color: var(--accent-strong);
  border-color: var(--accent-line);
}

/* --- hero --- */
.hero {
  padding: 4rem 0 3rem;
}

.hero h1 {
  font-size: clamp(1.9rem, 5vw, 2.9rem);
  line-height: 1.35;
  margin: 0 0 1rem;
}

.hero p.lead {
  font-size: 1.08rem;
  color: var(--muted);
  max-width: 42rem;
  margin: 0 0 1.8rem;
}

.hero-actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.note {
  margin-top: 1.4rem;
  font-size: 0.9rem;
  color: var(--muted);
}

/* --- sections --- */
section.block { padding: 2.6rem 0; }

section.block h2 {
  font-size: 1.35rem;
  margin: 0 0 1.4rem;
  padding-left: 0.7rem;
  border-left: 4px solid var(--accent);
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.3rem;
  box-shadow: var(--shadow);
}

.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.02rem;
}

.card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.steps li {
  counter-increment: step;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.2rem 1rem 3.2rem;
  position: relative;
}

.steps li::before {
  content: counter(step);
  position: absolute;
  left: 1.1rem;
  top: 1rem;
  width: 1.5rem;
  height: 1.5rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  border: 1px solid var(--accent-line);
  font-size: 0.85rem;
  font-weight: 700;
}

.callout {
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  font-size: 0.95rem;
}

/* --- legal pages --- */
.legal { padding: 2.4rem 0 1rem; }
.legal h1 { font-size: 1.6rem; margin-bottom: 0.4rem; }
.legal .updated { color: var(--muted); font-size: 0.9rem; margin-top: 0; }
.legal h2 {
  font-size: 1.1rem;
  margin: 2rem 0 0.6rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}
.legal ul { padding-left: 1.3rem; }
.legal li { margin-bottom: 0.35rem; }

.table-wrap { overflow-x: auto; }

table.data {
  border-collapse: collapse;
  width: 100%;
  min-width: 32rem;
  font-size: 0.94rem;
}

table.data th,
table.data td {
  border: 1px solid var(--line);
  padding: 0.6rem 0.8rem;
  text-align: left;
  vertical-align: top;
}

table.data th { background: var(--panel-2); }

/* --- footer --- */
.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 70%, transparent);
}

.site-footer .wrap {
  padding: 1.6rem 0;
  display: flex;
  gap: 1rem 1.4rem;
  flex-wrap: wrap;
  align-items: center;
  font-size: 0.9rem;
  color: var(--muted);
}

.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--text); }
.site-footer .spacer { margin-left: auto; }