:root {
  --bg: #f6f5fb;
  --surface: #ffffff;
  --ink: #1d1b2e;
  --muted: #5d5a73;
  --line: #e4e1f0;
  --accent: #6c4cf1;
  --accent-2: #00b8d9;
  --accent-3: #ff7a59;
  --hero-1: #1b1146;
  --hero-2: #3a1c7a;
  --shadow: 0 10px 30px rgba(40, 20, 100, .10);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0d1c;
    --surface: #181530;
    --ink: #eeeaff;
    --muted: #a9a4c9;
    --line: #2a2650;
    --shadow: 0 10px 30px rgba(0, 0, 0, .45);
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-underline-offset: 3px; }
.wrap { max-width: 56rem; margin: 0 auto; padding: 0 1.25rem; }

/* ---- ヘッダー（モザイク模様） ---- */
.hero {
  position: relative;
  color: #fff;
  background:
    radial-gradient(60rem 30rem at 85% -10%, rgba(0, 184, 217, .35), transparent 60%),
    radial-gradient(50rem 28rem at 0% 110%, rgba(255, 122, 89, .30), transparent 60%),
    linear-gradient(135deg, var(--hero-1), var(--hero-2));
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  opacity: .35;
  background:
    conic-gradient(from 45deg at 50% 50%, #6c4cf1 0 25%, #00b8d9 0 50%, #ff7a59 0 75%, #ffd166 0) 0 0 / 56px 56px;
  -webkit-mask-image: linear-gradient(115deg, transparent 20%, #000 70%);
          mask-image: linear-gradient(115deg, transparent 20%, #000 70%);
}
.hero .wrap { position: relative; padding-top: 4.5rem; padding-bottom: 4.5rem; }
.hero.small .wrap { padding-top: 2.5rem; padding-bottom: 2.5rem; }
.brand {
  display: inline-flex; align-items: center; gap: .6rem;
  color: #fff; text-decoration: none; font-weight: 700; letter-spacing: .08em;
}
.logo {
  width: 1.9rem; height: 1.9rem; border-radius: .45rem;
  background: conic-gradient(from 45deg, #6c4cf1 0 25%, #00b8d9 0 50%, #ff7a59 0 75%, #ffd166 0);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, .25);
}
.hero h1 {
  margin: 1.6rem 0 .6rem;
  font-size: clamp(2.4rem, 7vw, 4rem);
  line-height: 1.15;
  letter-spacing: .02em;
}
.hero h1 .grad {
  background: linear-gradient(90deg, #b9a7ff, #7fe3f5 55%, #ffb199);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { max-width: 34rem; margin: 0; color: #d9d3ff; font-size: 1.05rem; }
.hero.small h1 { font-size: clamp(1.6rem, 4.5vw, 2.2rem); margin-top: 1.2rem; }

/* ---- 本文 ---- */
main { padding: 3.5rem 0 4rem; }
h2.section { font-size: 1.35rem; margin: 0 0 1.2rem; display: flex; align-items: center; gap: .6rem; }
h2.section::before {
  content: ""; width: .55rem; height: 1.4rem; border-radius: .2rem;
  background: linear-gradient(var(--accent), var(--accent-2));
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  padding: 1.6rem;
  box-shadow: var(--shadow);
}
.badge {
  display: inline-block; font-size: .78rem; font-weight: 700; letter-spacing: .06em;
  padding: .15rem .65rem; border-radius: 999px;
  color: var(--accent); background: color-mix(in srgb, var(--accent) 12%, transparent);
}
.card h3 { margin: .7rem 0 .4rem; font-size: 1.25rem; }
.card p { margin: .4rem 0; color: var(--muted); }

.points { display: grid; gap: 1rem; margin-top: 1.4rem; grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr)); }
.point {
  border: 1px solid var(--line); border-radius: .9rem; padding: 1.1rem 1.2rem;
  background: color-mix(in srgb, var(--surface) 90%, var(--accent) 4%);
}
.point .tile { width: 1.6rem; height: 1.6rem; border-radius: .4rem; margin-bottom: .6rem; }
.point:nth-child(1) .tile { background: var(--accent); }
.point:nth-child(2) .tile { background: var(--accent-2); }
.point:nth-child(3) .tile { background: var(--accent-3); }
.point strong { display: block; margin-bottom: .2rem; }
.point span { color: var(--muted); font-size: .95rem; }

.links { margin-top: 2rem; display: flex; gap: .8rem; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: .7rem 1.2rem; border-radius: .7rem; text-decoration: none; font-weight: 700;
  color: #fff; background: linear-gradient(135deg, var(--accent), #8a6bff);
  box-shadow: 0 6px 18px rgba(108, 76, 241, .35);
}
.btn.ghost { color: var(--accent); background: transparent; border: 1px solid var(--accent); box-shadow: none; }

/* ---- プライバシーポリシー ---- */
.policy section { margin-bottom: 1.2rem; }
.policy h2 { margin: 0 0 .5rem; font-size: 1.1rem; display: flex; gap: .7rem; align-items: baseline; }
.policy h2 .no {
  flex: none; min-width: 1.9rem; height: 1.9rem; border-radius: .5rem; display: inline-grid; place-items: center;
  color: #fff; font-size: .9rem; background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.policy p { margin: 0; color: var(--muted); }
.meta { color: var(--muted); font-size: .92rem; margin-bottom: 1.6rem; }

.policy .card { margin-bottom: 1rem; }
.policy .list { margin: .6rem 0; padding-left: 1.3rem; color: var(--muted); }
.policy .list li { margin: .2rem 0; }
.tbl { width: 100%; border-collapse: collapse; margin-top: .8rem; font-size: .95rem; }
.tbl th, .tbl td { text-align: left; vertical-align: top; padding: .8rem .9rem; border-top: 1px solid var(--line); }
.tbl th { width: 11rem; color: var(--ink); white-space: nowrap; }
.tbl td { color: var(--muted); }
@media (max-width: 36rem) {
  .tbl th, .tbl td { display: block; width: auto; white-space: normal; }
  .tbl th { padding-bottom: 0; border-top: 1px solid var(--line); }
  .tbl td { border-top: 0; padding-top: .2rem; }
}

/* ---- 広告枠（コードを貼るまでは空＝何も表示しない） ---- */
.ad-slot { margin: 2rem 0; text-align: center; }
.ad-slot:empty { display: none; }

/* ---- フッター ---- */
footer { border-top: 1px solid var(--line); padding: 2rem 0 3rem; color: var(--muted); font-size: .92rem; }
footer .wrap { display: flex; flex-wrap: wrap; gap: .6rem 1.6rem; justify-content: space-between; }