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

    :root {
      color-scheme: light dark;
      --bg: #f5f5f7;
      --bg-alt: #ffffff;
      --text: #1d1d1f;
      --sub: #6e6e73;
      --line: #d2d2d7;
      --blue: #0071e3;
      --top-bg: #ffffff;
      --top-nav-bg: rgba(255,255,255,.82);
      --top-text: #1d1d1f;
      --top-sub: #4d4d51;
      --top-border: rgba(0,0,0,.08);
      --top-shadow: rgba(0,0,0,.12);
      --hero-title-a: #1d1d1f;
      --hero-title-b: rgba(29,29,31,.45);
      --section-invert-bg: #ffffff;
      --section-invert-text: #1d1d1f;
      --section-invert-sub: #4d4d51;
      --section-invert-btn-bg: #1d1d1f;
      --section-invert-btn-text: #f5f5f7;
      --section-invert-btn-hover: #2c2c2e;
      --web-section-bg: #f5f5f7;
      --radius: 20px;
      --wrap: min(980px, calc(100% - 48px));
      --wrap-mid: min(760px, calc(100% - 48px));
    }

    @media (prefers-color-scheme: dark) {
      :root {
        --bg: #111113;
        --bg-alt: #1c1c1e;
        --text: #f5f5f7;
        --sub: #a1a1a6;
        --line: #3a3a3c;
        --blue: #0a84ff;
        --top-bg: #000000;
        --top-nav-bg: rgba(0,0,0,.72);
        --top-text: #f5f5f7;
        --top-sub: #a1a1a6;
        --top-border: rgba(255,255,255,.08);
        --top-shadow: rgba(0,0,0,.7);
        --hero-title-a: #ffffff;
        --hero-title-b: rgba(255,255,255,.45);
        --section-invert-bg: #000000;
        --section-invert-text: #f5f5f7;
        --section-invert-sub: #a1a1a6;
        --section-invert-btn-bg: #f5f5f7;
        --section-invert-btn-text: #1d1d1f;
        --section-invert-btn-hover: #e5e5ea;
        --web-section-bg: #000000;
      }
    }

    html { scroll-behavior: smooth; }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
        "Helvetica Neue", Arial, sans-serif;
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a { text-decoration: none; }
    img { display: block; max-width: 100%; }

    .wrap     { width: var(--wrap);     margin: 0 auto; }
    .wrap-mid { width: var(--wrap-mid); margin: 0 auto; }

    /* ── Scroll reveal ── */
    .r {
      opacity: 0;
      transform: translateY(28px);
      transition: opacity .7s cubic-bezier(.25,.1,.25,1),
                  transform .7s cubic-bezier(.25,.1,.25,1);
    }
    .r.on { opacity: 1; transform: none; }
    .r.d1 { transition-delay: .10s; }
    .r.d2 { transition-delay: .20s; }
    .r.d3 { transition-delay: .32s; }

    /* ── Nav ── */
    .nav {
      position: sticky; top: 0; z-index: 200;
      height: 48px;
      background: var(--top-nav-bg);
      backdrop-filter: saturate(180%) blur(20px);
      -webkit-backdrop-filter: saturate(180%) blur(20px);
      border-bottom: 1px solid var(--top-border);
    }
    .nav-inner {
      display: flex; align-items: center; justify-content: space-between; height: 100%;
    }
    .nav-brand {
      display: flex; align-items: center; gap: 8px;
      font-size: 15px; font-weight: 600; color: var(--top-text);
    }
    .nav-brand img { width: 26px; height: 26px; border-radius: 7px; }
    .nav-actions { display: flex; align-items: center; gap: 12px; }
    .nav-web {
      display: inline-flex; align-items: center;
      height: 28px; padding: 0 14px;
      background: #f5f5f7; color: #1d1d1f;
      border-radius: 14px; font-size: 13px; font-weight: 500;
      white-space: nowrap; transition: background .15s;
    }
    .nav-web:hover { background: #e5e5ea; }
    .nav-dl img { height: 28px; width: auto; }

    /* ── Hero ── */
    .hero {
      background: var(--top-bg);
      color: var(--top-text);
      text-align: center;
      padding: 96px 24px 0;
      overflow: hidden;
    }
    .hero-eyebrow {
      font-size: 13px; font-weight: 600; letter-spacing: .12em;
      text-transform: uppercase; color: #6e6e73; margin-bottom: 14px;
    }
    .hero-h1 {
      font-size: clamp(52px, 9vw, 104px);
      font-weight: 700; letter-spacing: -.035em; line-height: 1.0;
      margin-bottom: 20px;
      background: linear-gradient(175deg,var(--hero-title-a) 50%,var(--hero-title-b));
      -webkit-background-clip: text; -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .hero-sub {
      font-size: clamp(17px, 2.2vw, 22px);
      color: var(--top-sub); max-width: 520px;
      margin: 0 auto 38px; line-height: 1.5;
    }
    .hero-dl-label {
      font-size: 11px; font-weight: 600; letter-spacing: .08em;
      text-transform: uppercase; color: var(--top-sub); margin-bottom: 8px;
    }
    .hero-badge { display: inline-block; }
    .hero-badge img { height: 52px; width: auto; }
    /* バッジをshots画像より前面に */
    .hero > .r { position: relative; z-index: 1; }
    .hero-shots {
      display: flex; justify-content: center; align-items: flex-end;
      gap: 0; margin-top: 56px; height: 460px; position: relative; z-index: 0;
    }
    .hero-shots img {
      position: absolute; bottom: 0;
      filter: drop-shadow(0 24px 64px var(--top-shadow));
    }
    .hs-c { width: clamp(180px, 22vw, 240px); left: 50%; transform: translateX(-50%); z-index: 3; }
    .hs-l { width: clamp(150px, 18vw, 200px); left: calc(50% - clamp(180px,22vw,245px)); z-index: 2; transform: rotate(-5deg) translateY(24px); }
    .hs-r { width: clamp(150px, 18vw, 200px); left: calc(50% + clamp(60px,4vw,45px)); z-index: 2; transform: rotate(5deg) translateY(24px); }

    /* ── Statement ── */
    .stmt {
      background: var(--bg-alt);
      padding: 120px 24px;
      text-align: center;
    }
    .stmt-text {
      font-size: clamp(28px, 4.5vw, 52px);
      font-weight: 700; letter-spacing: -.03em; line-height: 1.2;
    }
    .stmt-text em { font-style: normal; color: var(--blue); }
    .stmt-note {
      margin-top: 14px; font-size: 13px; color: var(--sub);
    }

    /* ── Feature split ── */
    .feat {
      padding: 80px 24px;
    }
    .feat--light { background: var(--bg); }
    .feat--white { background: var(--bg-alt); }
    .feat--dark  { background: var(--section-invert-bg); }

    .feat-inner {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 64px; align-items: center;
    }
    .feat-inner.rev .feat-shot { order: -1; }

    .feat-label {
      display: inline-block;
      font-size: 11px; font-weight: 700; letter-spacing: .1em;
      text-transform: uppercase; color: var(--blue); margin-bottom: 14px;
    }
    .feat--dark .feat-label { color: #0a84ff; }

    .feat-platforms {
      font-size: 13px; font-weight: 600; letter-spacing: .06em;
      color: var(--sub); margin-bottom: 10px;
    }
    .feat--dark .feat-platforms { color: #6e6e73; }

    .feat-h2 {
      font-size: clamp(32px, 4vw, 54px);
      font-weight: 700; letter-spacing: -.03em; line-height: 1.08;
      margin-bottom: 18px;
    }
    .feat--dark .feat-h2 { color: var(--section-invert-text); }

    .feat-desc {
      font-size: 17px; line-height: 1.7; color: var(--sub); max-width: 400px;
    }
    .feat--dark .feat-desc { color: var(--section-invert-sub); }

    .feat-shot { display: flex; justify-content: center; align-items: center; }
    .feat-shot img {
      width: min(270px, 42vw);
      filter: drop-shadow(0 20px 48px rgba(0,0,0,.14));
    }
    .feat--dark .feat-shot img { filter: drop-shadow(0 24px 56px rgba(0,0,0,.55)); }

    /* ── Dark-center feature ── */
    .feat-dc {
      background: #000; padding: 120px 24px; text-align: center; overflow: hidden;
    }
    .feat--web {
      background: var(--web-section-bg);
      padding: 120px 24px;
    }
.feat--web .feat-shot { flex-direction: column; align-items: flex-start; }
.feat--web .feat-shot img { width: 100%; filter: drop-shadow(0 24px 56px rgba(0,0,0,.55)); }
.web-shot-image { border-radius: 12px; }
.web-note { margin-top: 8px; font-size: 12px; color: var(--section-invert-sub); }

    /* ── ウェブ版を開くボタン ── */
    .btn-web-open {
      display: inline-flex; align-items: center;
      height: 52px; padding: 0 24px; margin-top: 24px;
      background: var(--section-invert-btn-bg); color: var(--section-invert-btn-text);
      border-radius: 30px; font-size: 15px; font-weight: 500;
      white-space: nowrap; transition: background .15s;
    }
    .btn-web-open:hover { background: var(--section-invert-btn-hover); }
    .feat-dc .feat-label { color: #0a84ff; }
    .feat-dc .feat-h2 { color: #f5f5f7; }
    .feat-dc .feat-desc {
      color: #a1a1a6; margin: 0 auto 56px; max-width: 440px;
    }
    .feat-dc .feat-shot img {
      width: min(248px, 52vw); margin: 0 auto;
      filter: drop-shadow(0 32px 80px rgba(10,132,255,.18));
    }

    /* ── Feature icons row ── */
    .feat-icons {
      background: var(--bg-alt);
      padding: 100px 24px;
    }
    .feat-icons-head { text-align: center; margin-bottom: 64px; }
    .feat-icons-head p { font-size: 17px; color: var(--sub); margin-top: 12px; }
    .icons-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .icon-card {
      background: var(--bg);
      border: 1px solid var(--line);
      border-radius: 20px;
      padding: 32px 24px;
    }
    .icon-card-icon {
      font-size: 32px; margin-bottom: 16px; line-height: 1;
    }
    .icon-card-title {
      font-size: 18px; font-weight: 700; letter-spacing: -.015em; margin-bottom: 6px;
    }
    .icon-card-desc {
      font-size: 14px; color: var(--sub); line-height: 1.6;
    }

    /* ── Pricing ── */
    .pricing {
      background: var(--bg); padding: 120px 24px; text-align: center;
    }
    .pricing-h2 {
      font-size: clamp(32px, 4.5vw, 52px);
      font-weight: 700; letter-spacing: -.03em; line-height: 1.1;
      margin-bottom: 16px;
    }
    .pricing-sub {
      font-size: 17px; color: var(--sub);
      margin: 0 auto 56px; max-width: 480px;
    }
    .pricing-grid {
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 16px; max-width: 700px; margin: 0 auto;
    }
    .plan {
      border: 1px solid var(--line);
      border-radius: 24px; padding: 36px 28px; text-align: left;
      background: var(--bg-alt);
    }
    .plan.prem {
      background: #1d1d1f; border-color: #3a3a3c; color: #f5f5f7;
    }
    @media (prefers-color-scheme: dark) {
      .plan.prem { background: #2c2c2e; border-color: #48484a; }
    }
    .plan-name { font-size: 22px; font-weight: 700; margin-bottom: 4px; }
    .plan.prem .plan-name { color: #f5f5f7; }
    .plan-price { font-size: 14px; color: var(--sub); margin-bottom: 28px; }
    .plan.prem .plan-price { color: #a1a1a6; }
    .plan-list { list-style: none; display: grid; gap: 13px; }
    .plan-list li {
      display: flex; align-items: flex-start; gap: 10px;
      font-size: 15px; color: var(--sub); line-height: 1.4;
    }
    .plan-list li::before { content: "✓"; color: var(--blue); font-weight: 700; flex-shrink: 0; margin-top: 1px; }
    .plan.prem .plan-list li { color: #a1a1a6; }
    .plan.prem .plan-list li::before { color: #0a84ff; }

    /* ── CTA ── */
    .cta {
      background: var(--section-invert-bg); padding: 140px 24px; text-align: center;
    }
    .cta-h2 {
      font-size: clamp(36px, 5.5vw, 72px);
      font-weight: 700; letter-spacing: -.035em; line-height: 1.0;
      color: var(--section-invert-text); margin-bottom: 14px;
    }
    .cta-sub { font-size: 17px; color: var(--section-invert-sub); margin-bottom: 40px; }
    .cta-badge img { height: 56px; width: auto; display: inline-block; }
    .cta-note { margin-top: 16px; font-size: 13px; color: #3a3a3c; }

    /* ── Footer ── */
    footer {
      background: #f5f5f7; border-top: 1px solid #d2d2d7; padding: 40px 24px;
    }
    @media (prefers-color-scheme: dark) {
      footer { background: #111113; border-color: #3a3a3c; }
    }
    .footer-inner {
      display: flex; align-items: center; justify-content: space-between;
      flex-wrap: wrap; gap: 12px;
    }
    .footer-copy { font-size: 12px; color: var(--sub); }
    .footer-copy a { color: var(--sub); }
    .footer-copy a:hover { color: var(--text); }
    .footer-links { display: flex; flex-wrap: wrap; gap: 16px; }
    .footer-links a { font-size: 12px; color: var(--sub); }
    .footer-links a:hover { color: var(--text); }

    /* ── Responsive ── */
    @media (max-width: 720px) {
      .hero { padding-top: 64px; }
      .hero-shots { height: auto; margin-top: 40px; display: block; }
      .hs-l, .hs-r { display: none; }
      /* position:static で絶対配置を解除しボタン被りを防止 */
      .hero-shots .hs-c {
        position: static; left: auto; transform: none;
        width: clamp(180px, 55vw, 230px); display: block; margin: 0 auto;
      }

      .feat { padding: 48px 24px; }
      .feat-inner, .feat-inner.rev {
        grid-template-columns: 1fr;
        gap: 20px;
        text-align: center;
      }
      /* モバイル: タイトル → 文章 → ボタン → 画像 の順 */
      .feat-text { display: contents; }
      .feat-platforms { order: 1; }
      .feat-h2 { order: 2; }
      .feat-desc { order: 3; max-width: 100%; }
      .btn-web-open { order: 4; justify-self: center; }
      .feat-shot { order: 5 !important; }
      .feat-shot img { width: min(220px, 60vw); margin: 0 auto; }

      .nav-web { display: none; }

      .icons-grid { grid-template-columns: 1fr; }
      .pricing-grid { grid-template-columns: 1fr; }
      .feat--web .feat-shot { align-items: center; }
      .feat--web .feat-shot img { width: min(340px, 90vw); }

      .footer-inner { flex-direction: column; align-items: flex-start; }
    }