:root {
  --navy: #16213f;
  --navy-2: #22305a;
  --blue: #3d6fd8;
  --blue-soft: #e8effc;
  --red: #e0453c;
  --ink: #1b1f2a;
  --muted: #5d6475;
  --line: #e3e6ee;
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --card: #ffffff;
  --radius: 16px;
  --font: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN",
    "Noto Sans JP", "Yu Gothic UI", "Meiryo", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e9ecf3;
    --muted: #a3aabb;
    --line: #2c3550;
    --bg: #0f1630;
    --bg-alt: #141c3a;
    --card: #1a2346;
    --blue-soft: #1f2d5c;
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.8;
  -webkit-text-size-adjust: 100%;
}
img, video { max-width: 100%; display: block; }
a { color: var(--blue); }
h1, h2, h3 { line-height: 1.35; margin: 0 0 .6em; }
h2 { font-size: clamp(1.4rem, 3.2vw, 1.9rem); text-align: center; margin-bottom: 1.4em; }
h3 { font-size: 1.08rem; }
p { margin: 0 0 1em; }
section { padding: 72px 0; }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 720px; }
.center { text-align: center; }
.small { font-size: .88rem; color: var(--muted); }
.tiny { font-size: .75rem; opacity: .7; }

/* ヘッダ */
.bar {
  position: sticky; top: 0; z-index: 10;
  background: rgba(22, 33, 63, .92);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
}
.bar-in { display: flex; align-items: center; gap: 20px; height: 56px; }
.brand {
  display: flex; align-items: center; gap: 8px;
  color: #fff; font-weight: 700; text-decoration: none; letter-spacing: .04em;
}
.brand img { border-radius: 7px; }
.bar-nav { display: flex; gap: 20px; margin-left: auto; }
.bar-nav a { color: rgba(255, 255, 255, .8); text-decoration: none; font-size: .9rem; }
.bar-nav a:hover { color: #fff; }

/* ボタン */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--blue); color: #fff; text-decoration: none; font-weight: 700;
  padding: 14px 26px; border-radius: 999px;
  box-shadow: 0 6px 20px rgba(61, 111, 216, .35);
  transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 10px 24px rgba(61, 111, 216, .45); }
.btn-sm { padding: 6px 14px; font-size: .85rem; box-shadow: none; }
.btn-light { background: #fff; color: var(--navy); box-shadow: 0 6px 20px rgba(0, 0, 0, .25); }

/* 最初の画面 */
.hero {
  background: radial-gradient(120% 90% at 85% 10%, #2f4a8f 0%, var(--navy-2) 40%, var(--navy) 100%);
  color: #fff;
  padding: 64px 0 72px;
  overflow: hidden;
}
.hero-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; }
.eyebrow {
  display: inline-block; font-size: .85rem; font-weight: 700; letter-spacing: .06em;
  color: #c9d8ff; border: 1px solid rgba(201, 216, 255, .35);
  padding: 2px 12px; border-radius: 999px; margin-bottom: 1.2em;
}
.hero h1 { font-size: clamp(1.75rem, 4.2vw, 3.2rem); letter-spacing: .02em; }
.nb { white-space: nowrap; }
.lead { font-size: 1.05rem; color: rgba(255, 255, 255, .86); max-width: 34em; }
.lead strong { color: #fff; background: linear-gradient(transparent 62%, rgba(224, 69, 60, .55) 62%); }
.cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-top: 28px; }
.cta-note { font-size: .85rem; color: rgba(255, 255, 255, .7); }
.hero-phone { display: flex; justify-content: center; }
.hero-phone video {
  width: 300px; aspect-ratio: 444 / 962; object-fit: cover;
  border-radius: 40px; border: 8px solid #0b1125; background: #0b1125;
  box-shadow: 0 30px 60px rgba(0, 0, 0, .45), 0 0 0 1px rgba(255, 255, 255, .08);
}

/* 3 つの手順 */
.steps { background: var(--bg); }
.step-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.step-list li {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 24px 20px; position: relative;
}
.step-list p { color: var(--muted); font-size: .95rem; }
.num {
  display: inline-grid; place-items: center; width: 36px; height: 36px; margin-bottom: 12px;
  border-radius: 50%; background: var(--blue-soft); color: var(--blue); font-weight: 800;
}

/* できること */
.features { background: var(--bg-alt); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-grid article {
  background: var(--card); border-radius: var(--radius); padding: 24px;
  border-top: 3px solid var(--blue);
}
.feature-grid article:nth-child(4) { border-top-color: var(--red); }
.feature-grid p { color: var(--muted); font-size: .95rem; margin: 0; }

/* 画面 */
.shot-row {
  display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px;
  max-width: 1080px; margin: 0 auto 16px; padding: 0 20px;
}
.shot-row figure { margin: 0; }
.shot-row img { width: 100%; height: auto; border-radius: 14px; box-shadow: 0 6px 20px rgba(22, 33, 63, .18); }

/* 読める PDF */
.pdf { background: var(--bg-alt); }
.pdf h2 { text-align: left; margin-bottom: .8em; }
.two { display: grid; grid-template-columns: 1.4fr 1fr; gap: 40px; align-items: start; }
.check { list-style: none; padding: 0; margin: 0 0 1.4em; }
.check li { position: relative; padding-left: 30px; margin-bottom: .6em; }
.check li::before {
  position: absolute; left: 0; top: .2em; width: 20px; height: 20px; border-radius: 50%;
  display: grid; place-items: center; font-size: .75rem; font-weight: 800; color: #fff;
}
.check .ok::before { content: "✓"; background: #2e9e6a; }
.check .wip::before { content: "…"; background: #c99a2e; }
.check .ng::before { content: "×"; background: #9aa1b2; }
.try {
  background: var(--card); border-radius: var(--radius); padding: 24px;
  border: 1px dashed var(--blue);
}
.try p { margin: 0; color: var(--muted); }

/* 料金 */
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 760px; margin: 0 auto 20px; }
.plan { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.plan-full { border: 2px solid var(--blue); box-shadow: 0 10px 30px rgba(61, 111, 216, .15); }
.amount { font-size: 2rem; font-weight: 800; margin-bottom: .4em; }
.amount span { font-size: .9rem; font-weight: 700; color: var(--blue); margin-left: 6px; }
.plan ul { margin: 0; padding-left: 1.2em; color: var(--muted); font-size: .95rem; }

/* よくある質問 */
.faq details { border-bottom: 1px solid var(--line); padding: 14px 4px; }
.faq summary { cursor: pointer; font-weight: 700; list-style: none; position: relative; padding-right: 28px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: -2px; font-size: 1.3rem; color: var(--blue); }
.faq details[open] summary::after { content: "−"; }
.faq details p { margin: .6em 0 0; color: var(--muted); }
.more { margin-top: 1.4em; text-align: right; }

/* 最後の呼びかけ */
.final { background: linear-gradient(160deg, var(--navy-2), var(--navy)); color: #fff; }
.final-icon { margin: 0 auto 20px; border-radius: 20px; box-shadow: 0 10px 30px rgba(0, 0, 0, .35); }

/* フッタ */
.foot { background: #0b1125; color: rgba(255, 255, 255, .75); padding: 32px 0; font-size: .88rem; }
.foot a { color: rgba(255, 255, 255, .85); }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 12px; }
.foot p { margin: 0 0 .4em; }

/* タブレット */
@media (max-width: 900px) {
  .feature-grid { grid-template-columns: 1fr 1fr; }
  .shot-row {
    display: flex; overflow-x: auto; scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch; padding-bottom: 12px;
  }
  .shot-row figure { flex: 0 0 200px; scroll-snap-align: center; }
}

/* スマホ */
@media (max-width: 720px) {
  section { padding: 56px 0; }
  .bar-nav { display: none; }
  .bar .btn-sm { margin-left: auto; }
  .hero { padding: 40px 0 56px; }
  .hero-in { grid-template-columns: 1fr; gap: 36px; text-align: center; }
  .lead { margin: 0 auto 1em; }
  .cta { flex-direction: column; }
  .hero-phone video { width: 240px; border-radius: 32px; border-width: 6px; }
  .step-list, .feature-grid, .plans, .two { grid-template-columns: 1fr; }
  .shot-row figure { flex-basis: 62vw; }
  .more { text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn { transition: none; }
}