:root {
  --bg: #1c1613;
  --surface: #2a221d;
  --surface-2: #362c25;
  --text: #f3e9e2;
  --text-sub: #c4b3a6;
  --accent: #f0c9a0;
  --accent-deep: #ff7460;
  --brand-grad: linear-gradient(135deg, #221f64, #ff7460);
  --error: #ffb4ab;
  --radius: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.container { max-width: 960px; margin: 0 auto; padding: 0 24px; }

/* ── Header ── */
header {
  padding: 20px 0;
}
header .container { display: flex; align-items: center; gap: 12px; }
header img { width: 40px; height: 40px; border-radius: 10px; }
header .name { font-size: 1.25rem; font-weight: 700; letter-spacing: 0.08em; }
header nav { margin-left: auto; }
header nav a {
  color: var(--text-sub); text-decoration: none; font-size: 0.9rem; margin-left: 20px;
}
header nav a:hover { color: var(--accent); }

/* ── Hero ── */
.hero { padding: 48px 0 72px; }
.hero .container {
  display: flex; align-items: center; gap: 48px; flex-wrap: wrap;
}
.hero-copy { flex: 1 1 380px; }
.hero-copy h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.35;
  font-weight: 800;
}
.hero-copy h1 .grad {
  background: linear-gradient(90deg, #a99bff, #ff9d8d);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-copy p { margin-top: 20px; color: var(--text-sub); font-size: 1.05rem; }
.hero-badge {
  display: inline-block; margin-top: 28px; padding: 12px 24px;
  border: 1px solid var(--accent); border-radius: 999px;
  color: var(--accent); font-size: 0.95rem; text-decoration: none;
}
.hero-phone { flex: 0 0 auto; margin: 0 auto; }

.phone {
  width: 230px; aspect-ratio: 9 / 19; border-radius: 28px; overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.14);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
}
.phone img { width: 100%; height: 100%; object-fit: cover; display: block; }

/* ── Features ── */
.features { padding: 56px 0; }
.features h2, .plans h2, .contact h2 { font-size: 1.6rem; text-align: center; margin-bottom: 40px; }
.feature-grid { display: flex; gap: 32px; flex-wrap: wrap; justify-content: center; }
.feature {
  flex: 1 1 240px; max-width: 300px; text-align: center;
}
.feature .phone { width: 190px; margin: 0 auto 20px; }
.feature h3 { font-size: 1.1rem; margin-bottom: 8px; }
.feature p { color: var(--text-sub); font-size: 0.92rem; }

/* ── Plans ── */
.plans { padding: 56px 0; }
.plan-grid { display: flex; gap: 20px; flex-wrap: wrap; justify-content: center; }
.plan {
  background: var(--surface); border-radius: var(--radius); padding: 28px 24px;
  flex: 1 1 220px; max-width: 280px;
}
.plan .plan-name { font-weight: 700; }
.plan .plan-price { font-size: 1.6rem; font-weight: 800; margin: 10px 0; color: var(--accent); }
.plan .plan-price span { font-size: 0.85rem; font-weight: 400; color: var(--text-sub); }
.plan ul { list-style: none; color: var(--text-sub); font-size: 0.9rem; }
.plan li { padding: 4px 0; }
.plan li::before { content: "✓ "; color: var(--accent); }

/* ── Contact ── */
.contact { padding: 56px 0 72px; }
.contact form {
  max-width: 560px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px;
}
.contact label { font-size: 0.9rem; color: var(--text-sub); }
.contact select, .contact input, .contact textarea {
  width: 100%; margin-top: 6px; padding: 12px 14px;
  background: var(--surface); color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.15); border-radius: 10px;
  font-size: 1rem; font-family: inherit;
}
.contact textarea { min-height: 140px; resize: vertical; }
.contact button {
  padding: 14px; border: none; border-radius: 999px;
  background: var(--accent); color: #3a2c1c; font-size: 1rem; font-weight: 700;
  cursor: pointer;
}
.contact button:disabled { opacity: 0.5; cursor: default; }
.contact .result { text-align: center; font-size: 0.95rem; min-height: 1.5em; }
.contact .result.ok { color: #9ed9a0; }
.contact .result.ng { color: var(--error); }
.hp { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

/* ── Footer ── */
footer {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 32px 0 48px; color: var(--text-sub); font-size: 0.85rem;
}
footer .container { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
footer a { color: var(--text-sub); text-decoration: none; }
footer a:hover { color: var(--accent); }
footer .copy { margin-left: auto; }

/* ── Legal docs ── */
.doc { max-width: 760px; margin: 0 auto; padding: 24px 24px 80px; }
.doc h1 { font-size: 1.6rem; margin: 32px 0 8px; }
.doc .updated { color: var(--text-sub); font-size: 0.85rem; margin-bottom: 32px; }
.doc h2 { font-size: 1.15rem; margin: 36px 0 12px; color: var(--accent); }
.doc p, .doc li { color: var(--text); font-size: 0.95rem; }
.doc ul, .doc ol { padding-left: 1.4em; margin: 8px 0; }
.doc table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 0.95rem; }
.doc th, .doc td { border: 1px solid rgba(255, 255, 255, 0.15); padding: 12px 14px; text-align: left; vertical-align: top; }
.doc th { background: var(--surface); white-space: nowrap; width: 30%; font-weight: 600; }
.doc .placeholder { color: var(--error); font-weight: 700; }
.doc a { color: var(--accent); }
.back { display: inline-block; margin-top: 40px; color: var(--accent); text-decoration: none; }

@media (max-width: 640px) {
  .hero { padding-top: 24px; }
  .hero .container { gap: 32px; }
  footer .copy { margin-left: 0; }
}