:root {
  --violet: #7c3aed;
  --violet-dark: #6d28d9;
  --violet-50: #f5f3ff;
  --violet-100: #ede9fe;
  --ink: #1e1b2e;
  --body: #3f3a52;
  --muted: #6b6584;
  --line: #e7e3f3;
  --bg: #ffffff;
  --bg-soft: #faf9fe;
  --radius: 16px;
  --maxw: 1080px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic UI", "Noto Sans JP", sans-serif;
  color: var(--body);
  background: var(--bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--violet-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.85); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--ink); font-size: 17px; }
.brand img { width: 30px; height: 30px; }
.nav a { color: var(--body); font-size: 14px; font-weight: 600; margin-left: 22px; }
@media (max-width: 640px) { .nav { display: none; } }

/* hero */
.hero {
  background:
    radial-gradient(1100px 420px at 80% -120px, var(--violet-100), transparent),
    linear-gradient(180deg, var(--violet-50), var(--bg));
  padding: 84px 0 64px;
}
.hero h1 { font-size: clamp(28px, 5vw, 46px); line-height: 1.3; color: var(--ink); letter-spacing: -.01em; }
.hero h1 .accent { color: var(--violet); }
.hero p.lead { margin-top: 18px; font-size: clamp(15px, 2.2vw, 18px); max-width: 620px; }
.hero .cta { margin-top: 30px; display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 13px 22px; border-radius: 12px;
  font-weight: 700; font-size: 15px; cursor: pointer; border: 1px solid transparent;
}
.btn-primary { background: var(--violet); color: #fff; }
.btn-primary:hover { background: var(--violet-dark); text-decoration: none; }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { border-color: var(--violet); text-decoration: none; }
.hero .trust { margin-top: 22px; font-size: 13px; color: var(--muted); }

/* sections */
section { padding: 64px 0; }
.section-soft { background: var(--bg-soft); }
.eyebrow { color: var(--violet); font-weight: 800; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.section-title { font-size: clamp(22px, 3.4vw, 30px); color: var(--ink); margin: 8px 0 10px; letter-spacing: -.01em; }
.section-desc { color: var(--muted); max-width: 640px; }

/* featured */
.featured {
  margin-top: 34px; display: grid; grid-template-columns: 1.1fr 1fr; gap: 36px; align-items: center;
  background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 34px; box-shadow: 0 18px 50px rgba(124,58,237,.08);
}
@media (max-width: 760px) { .featured { grid-template-columns: 1fr; padding: 24px; } }
.featured .for { color: var(--violet); font-weight: 800; font-size: 14px; }
.featured h3 { font-size: 24px; color: var(--ink); margin: 6px 0 10px; }
.featured ul { list-style: none; margin: 16px 0 22px; }
.featured ul li { padding-left: 26px; position: relative; margin: 8px 0; }
.featured ul li::before {
  content: ""; position: absolute; left: 4px; top: 10px; width: 8px; height: 8px;
  background: var(--violet); border-radius: 50%;
}
.mock {
  background: linear-gradient(160deg, #2a2440, #161226); border-radius: 16px; padding: 18px;
  color: #ede9fe; border: 1px solid #322b4d; font-size: 13px;
}
.mock .mhead { display: flex; justify-content: space-between; align-items: center; color: #c4b5fd; font-weight: 700; margin-bottom: 12px; }
.mock .mrow { display: flex; gap: 10px; padding: 9px 0; border-bottom: 1px solid #322b4d; }
.mock .mrow:last-child { border-bottom: none; }
.mock .mt { color: #c4b5fd; font-weight: 700; font-variant-numeric: tabular-nums; white-space: nowrap; }

/* audience grid */
.grid { margin-top: 34px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
@media (max-width: 860px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .grid { grid-template-columns: 1fr; } }
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 22px;
  transition: transform .14s, box-shadow .14s, border-color .14s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 14px 36px rgba(124,58,237,.1); border-color: var(--violet-100); }
.card .for { font-size: 12px; font-weight: 800; color: var(--violet); }
.card h3 { font-size: 17px; color: var(--ink); margin: 6px 0 8px; }
.card p { font-size: 14px; color: var(--body); }
.badge {
  display: inline-block; font-size: 11px; font-weight: 800; padding: 3px 9px; border-radius: 999px; margin-top: 14px;
}
.badge.ready { background: var(--violet-100); color: var(--violet-dark); }
.badge.soon { background: #f1eefb; color: var(--muted); }

/* features */
.feat-grid { margin-top: 34px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
@media (max-width: 860px) { .feat-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .feat-grid { grid-template-columns: 1fr; } }
.feat { padding: 8px 4px; }
.feat h3 { font-size: 16px; color: var(--ink); margin-bottom: 6px; }
.feat p { font-size: 13.5px; color: var(--muted); }

/* faq */
.faq { margin-top: 30px; }
.faq details {
  background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 4px 18px; margin-bottom: 12px;
}
.faq summary { cursor: pointer; font-weight: 700; color: var(--ink); padding: 14px 0; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--violet); font-weight: 800; }
.faq details[open] summary::after { content: "−"; }
.faq p { padding: 0 0 16px; color: var(--body); font-size: 14.5px; }

/* cta band */
.band { background: linear-gradient(135deg, var(--violet), #9333ea); color: #fff; text-align: center; border-radius: 24px; padding: 48px 24px; margin: 0 0 8px; }
.band h2 { font-size: clamp(22px, 3.4vw, 30px); }
.band p { margin: 12px auto 24px; max-width: 520px; color: var(--violet-100); }
.band .btn-primary { background: #fff; color: var(--violet-dark); }
.band .btn-primary:hover { background: var(--violet-50); }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 40px 0; color: var(--muted); font-size: 13px; }
.site-footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.site-footer .brand { font-size: 15px; }