:root {
    --pink:        #D4637E;
    --pink-dark:   #B84A66;
    --pink-light:  #FDF2F5;
    --pink-gradient: #F9E4EC;
    --green:       #1A9D57;
    --green-dark:  #147A44;
    --green-light: #ECF7F1;
    --ink:         #243040;
    --sub:         #4A5568;
    --bg:          #ffffff;
    --bg-soft:     #F7F8FA;
    --line:        #E8ECF0;
    --radius:      12px;
    --fs-body:     16px;
    --fs-note:     14px;
    --fs-tag:      12px;
    --maxw:        1200px;
    --shadow-sm:   0 1px 3px rgba(0,0,0,.04), 0 1px 2px rgba(0,0,0,.06);
    --shadow-md:   0 4px 16px rgba(0,0,0,.05), 0 2px 6px rgba(0,0,0,.04);
    --shadow-lg:   0 12px 40px rgba(0,0,0,.06), 0 4px 12px rgba(0,0,0,.04);
    --shadow-xl:   0 20px 60px rgba(0,0,0,.08), 0 8px 20px rgba(0,0,0,.04);
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  :focus-visible { outline: 2px solid var(--pink); outline-offset: 3px; }
  body { font-family: 'Noto Sans JP', 'Hiragino Sans', sans-serif; color: var(--ink); background: var(--bg); line-height: 1.8; text-wrap: wrap; word-break: normal; }

  /* BASE */
  .wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }
  section { padding: 80px 0; }
  .eyebrow { font-size: 11px; font-weight: 700; color: var(--pink-dark); letter-spacing: .25em; text-transform: uppercase; margin-bottom: 20px; }
  h2.title { font-size: clamp(26px, 3vw, 38px); font-weight: 700; margin-bottom: 24px; line-height: 1.5; letter-spacing: -.02em; }

  .btn { display: inline-block; padding: 18px 40px; border-radius: 9999px; font-size: 15px; font-weight: 500; text-decoration: none; letter-spacing: .02em; transition: all .35s cubic-bezier(.4,0,.2,1); box-shadow: rgba(26,38,51,.1) 0px 6px 24px 0px; }
  .btn-primary { background: var(--pink); color: #fff; border: 1px solid transparent; box-shadow: 0 4px 16px rgba(212,99,126,.2); }
  .btn-primary:hover { background: var(--pink-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(212,99,126,.3); }
  .btn-ghost { background: transparent; color: var(--ink); border: 1.5px solid var(--line); box-shadow: none; }
  .btn-ghost:hover { background: var(--bg-soft); border-color: var(--pink); color: var(--pink); transform: translateY(-2px); }

  .card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 32px; transition: all .4s cubic-bezier(.4,0,.2,1); box-shadow: var(--shadow-sm); }
  .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }

  /* PAGE HERO */
  .page-hero { padding: 88px 0 64px; }
  .breadcrumb { font-size: var(--fs-note); color: var(--sub); margin-bottom: 20px; }
  .breadcrumb a { color: var(--sub); text-decoration: none; }
  .breadcrumb a:hover { color: var(--ink); }
  .breadcrumb span { margin: 0 6px; }
  .page-hero h1 { font-size: 36px; font-weight: 700; line-height: 1.4; letter-spacing: -.02em; }
  .page-hero p.sub { font-size: var(--fs-body); color: var(--sub); margin-top: 12px; line-height: 1.8; max-width: 640px; }

  /* LEAD */
  .lead-section { background: linear-gradient(180deg, var(--bg-soft) 0%, #ffffff 100%); padding: 80px 0 40px; }
  .lead-inner { max-width: 880px; margin-top: 8px; }
  .lead-section h2 { font-size: 42px; font-weight: 700; line-height: 1.5; letter-spacing: -.02em; margin-bottom: 28px; }
  .lead-section p { font-size: var(--fs-body); color: var(--sub); line-height: 1.95; }

  /* INTEGRATED MODEL — BENEFITS */
  .section-head.center { text-align: center; }
  .section-head.center p { margin-left: auto; margin-right: auto; }
  .benefits-section { background: var(--bg-soft); }
  .benefits-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
  .benefit { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 36px 28px; box-shadow: var(--shadow-sm); }
  .benefit-icon { width: 56px; height: 56px; margin: 0 0 18px; border-radius: 50%; background: var(--pink-light); display: flex; align-items: center; justify-content: center; }
  .benefit-icon svg { width: 26px; height: 26px; color: var(--pink); stroke: var(--pink); fill: none; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
  .benefit h3 { font-size: 20px; font-weight: 700; color: var(--ink); margin-bottom: 10px; }
  .benefit p { font-size: var(--fs-note); color: var(--sub); line-height: 1.85; }

  /* INTEGRATED MODEL — CYCLE */
  .cycle-section { background: #fff; padding: 80px 0 40px; }

  /* AIを活用した開発力 */
  .ai-section-wrapper {
    position: relative;
    background: #293444 !important;
    padding: 80px 0 120px;
    overflow: hidden;
    overflow-x: clip;
    border-radius: 120px 120px 0 0;
  }
  .ai-section-wrapper > .wrap {
    position: relative;
    z-index: 2;
  }
  .ai-strength-section {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0;
  }
  .ai-strength-section .eyebrow {
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
  }
  .ai-strength-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.5;
    letter-spacing: -.02em;
    color: #fff;
    margin-bottom: 20px;
    opacity: 0;
    transform: scale(0.8);
    transition: all 1s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  .ai-strength-title.animate-in {
    font-size: 52px;
    opacity: 1;
    transform: scale(1);
  }
  .ai-strength-subtitle {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
  }
  .ai-strength-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.9;
    max-width: 800px;
    margin: 0 auto;
  }
  .ai-power-grid {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin: 48px auto 0;
    max-width: var(--maxw);
    padding: 0;
  }
  .ai-card {
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(50px) saturate(180%) brightness(110%);
    -webkit-backdrop-filter: blur(50px) saturate(180%) brightness(110%);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius);
    padding: 32px 24px;
    position: relative;
    transition: all .3s cubic-bezier(.4,0,.2,1);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    display: flex;
    flex-direction: column;
  }
  .ai-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.4);
    border-color: rgba(255, 255, 255, 0.5);
  }
  .ai-card-number {
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 80px;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.15);
    line-height: 1;
    letter-spacing: -.02em;
    pointer-events: none;
    z-index: 0;
  }
  .ai-card-title {
    position: relative;
    z-index: 1;
    font-size: 24px;
    font-weight: 700;
    color: #fff;
    margin-top: 40px;
    margin-bottom: 12px;
    line-height: 1.4;
  }
  .ai-card-desc {
    position: relative;
    z-index: 1;
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
  }
  .ai-card--wide {
    grid-column: span 3;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(50px) saturate(180%) brightness(110%);
    -webkit-backdrop-filter: blur(50px) saturate(180%) brightness(110%);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: 24px;
    padding: 36px 32px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15), inset 0 1px 0 rgba(255, 255, 255, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  .ai-card-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.25);
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    padding: 6px 14px;
    border-radius: 20px;
    margin-bottom: 16px;
    letter-spacing: .05em;
  }
  .ai-card-desc-main {
    font-size: 16px;
    font-weight: 500;
    color: #fff;
    line-height: 1.85;
    margin: 0;
    text-align: center;
  }
  .ai-footer-line {
    position: relative;
    z-index: 2;
    height: 1px;
    background: rgba(255, 255, 255, 0.2);
    margin: 40px auto 24px;
    max-width: var(--maxw);
    padding: 0;
  }
  .ai-footer-text {
    position: relative;
    z-index: 2;
    text-align: center;
    font-size: 16px;
    color: #fff;
    font-weight: 500;
    padding-bottom: 0;
    max-width: var(--maxw);
    margin: 0 auto;
    padding: 0;
  }

  @media (max-width: 1024px) {
    .ai-power-grid {
      grid-template-columns: 1fr;
      gap: 16px;
    }
    .ai-card--wide {
      grid-column: span 1;
    }
  }

  .cycle { margin-top: 52px; margin-bottom: 160px; }
  .cycle-track { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; align-items: stretch; }
  .cycle-node { display: flex; flex-direction: row; align-items: center; justify-content: space-between; gap: 12px; text-align: left; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 18px; text-decoration: none; color: inherit; box-shadow: var(--shadow-sm); transition: all .3s cubic-bezier(.4,0,.2,1); position: relative; z-index: 1; overflow: hidden; container-type: inline-size; }
  .cycle-node:hover { border-color: var(--pink); transform: translateY(-4px); box-shadow: var(--shadow-md); }
  /* 透かし文字は右寄せにして日本語テキスト（左寄せ）の右側から覗かせる。文字数に関係なく3カードとも同じサイズ・同じ右端に揃う */
  .cycle-node::before { content: attr(data-ghost); position: absolute; right: 56px; left: 18px; top: 60%; transform: translateY(-50%); text-align: left; font-family: 'Outfit', sans-serif; font-size: 8cqw; font-weight: 900; color: var(--pink-light); letter-spacing: 0.02em; z-index: -1; line-height: 1; pointer-events: none; user-select: none; white-space: nowrap; opacity: 0.8; overflow: hidden; }
  .cycle-node-content { display: flex; flex-direction: column; gap: 2px; position: relative; z-index: 2; flex: 1; }
  .cycle-node-arrow { width: 32px; height: 32px; color: var(--pink); flex-shrink: 0; position: relative; z-index: 2; transition: transform .3s cubic-bezier(.4,0,.2,1); margin-left: auto; }
  .cycle-node:hover .cycle-node-arrow { transform: translateY(2px); }
  .cycle-step { font-family: 'Outfit', sans-serif; font-size: 14px; font-weight: 800; color: var(--pink); letter-spacing: .08em; }
  .cycle-en { font-size: 9px; font-weight: 700; color: var(--sub); letter-spacing: .18em; }
  .cycle-en-small { font-size: 12px; font-weight: 700; color: var(--pink-dark); letter-spacing: .12em; position: relative; z-index: 2; text-transform: uppercase; }
  .cycle-jp { font-size: 20px; font-weight: 700; color: var(--ink); position: relative; z-index: 2; }
  .cycle-arrow { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px; padding: 0 20px; width: 80px; }
  .cycle-arrow svg { width: 26px; height: 26px; stroke: var(--pink); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
  .cycle-arrow span { font-size: 16px; color: var(--sub); white-space: nowrap; }
  .cycle-loop { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 24px; padding: 18px 28px; background: rgba(255, 255, 255, 0.5); backdrop-filter: blur(12px) saturate(180%); -webkit-backdrop-filter: blur(12px) saturate(180%); border: 1px solid rgba(255, 255, 255, 0.3); border-radius: var(--radius); box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08), inset 0 1px 0 rgba(255, 255, 255, 0.5); }
  @keyframes loop-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  .cycle-loop-icon { width: 30px; height: 30px; stroke: var(--ink); fill: none; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; animation: loop-spin 3s linear infinite; }
  .cycle-loop-text strong { font-size: 20px; font-weight: 700; color: var(--ink); margin-right: 12px; }
  .cycle-loop-text span { font-size: 16px; color: var(--sub); }

  @media (max-width: 768px) {
    .benefits-grid { grid-template-columns: 1fr; }
    .cycle-track { grid-template-columns: 1fr; }
    .cycle-node::before { font-size: 32px; left: 12px; top: 60%; }
    .cycle-arrow { flex-direction: row; gap: 8px; padding: 12px 0; width: auto; justify-self: center; }
    .cycle-arrow svg { transform: rotate(90deg); }
    .cycle-loop { flex-direction: column; text-align: center; gap: 8px; }
    .cycle-loop-text strong { display: block; margin-right: 0; margin-bottom: 2px; }
  }

  /* SERVICE SECTION */
  .service-block { background: var(--bg-soft); }
  .service-block.alt { background: var(--bg-soft); }
  .service-block#planning { background: var(--bg-soft); padding: 20px 0 64px; }
  .service-block#planning .service-inner { background: #ffffff; border-radius: var(--radius) var(--radius) 0 0; padding: 40px 48px 20px; box-shadow: none; align-items: center; overflow: hidden; }
  .service-block#planning .service-visual { background: #FAFBFC; border: none; padding: 20px; border-radius: var(--radius); }
  .service-block#planning .service-text { margin-bottom: 0; }
  .service-block#planning .service-text .eyebrow { margin-bottom: 12px; }
  .service-block#planning .service-text h2 { font-size: 30px; margin-bottom: 12px; }
  .service-block#planning .service-tagline { font-size: 19px; margin-bottom: 18px; }
  .service-block#planning .service-text p.lead { margin-bottom: 0; }
  .service-bottom { background: #ffffff; border-radius: 0 0 var(--radius) var(--radius); padding: 20px 48px 48px; box-shadow: var(--shadow-sm); }
  .service-block#development { background: var(--bg-soft); padding: 48px 0 64px; }
  .service-block#development .service-inner { background: #ffffff; border-radius: var(--radius) var(--radius) 0 0; padding: 40px 48px 20px; box-shadow: none; align-items: center; overflow: hidden; }
  .service-block#development .service-visual { background: #FAFBFC; border: none; padding: 20px; border-radius: var(--radius); }
  .service-block#development .service-text { margin-bottom: 0; }
  .service-block#development .service-text .eyebrow { margin-bottom: 12px; }
  .service-block#development .service-text h2 { font-size: 30px; margin-bottom: 12px; }
  .service-block#development .service-tagline { font-size: 19px; margin-bottom: 18px; }
  .service-block#development .service-text p.lead { margin-bottom: 0; }
  .service-block#development .service-bottom { background: #ffffff; border-radius: 0 0 var(--radius) var(--radius); padding: 20px 48px 48px; box-shadow: var(--shadow-sm); }
  .service-block#operation { background: var(--bg-soft); padding: 48px 0 64px; margin-bottom: 80px; }
  .service-block#operation .service-inner { background: #ffffff; border-radius: var(--radius) var(--radius) 0 0; padding: 40px 48px 20px; box-shadow: none; align-items: center; overflow: hidden; }
  .service-block#operation .service-visual { background: #FAFBFC; border: none; padding: 20px; border-radius: var(--radius); }
  .service-block#operation .service-text { margin-bottom: 0; }
  .service-block#operation .service-text .eyebrow { margin-bottom: 12px; }
  .service-block#operation .service-text h2 { font-size: 30px; margin-bottom: 12px; }
  .service-block#operation .service-tagline { font-size: 19px; margin-bottom: 18px; }
  .service-block#operation .service-text p.lead { margin-bottom: 0; }
  .service-block#operation .service-bottom { background: #ffffff; border-radius: 0 0 var(--radius) var(--radius); padding: 20px 48px 48px; box-shadow: var(--shadow-sm); }
  .service-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; overflow: hidden; }
  .service-inner.reverse { direction: rtl; }
  .service-inner.reverse > * { direction: ltr; }
  .service-text { overflow: hidden; position: relative; container-type: inline-size; }
  .service-text h2 { font-size: 24px; font-weight: 700; line-height: 1.55; margin-bottom: 4px; margin-top: 12px; }
  .service-title-ghost { font-size: 30px; font-weight: 700; line-height: 1.3; margin-bottom: 16px; margin-top: 0; position: relative; z-index: 1; }
  .service-title-ghost::before { content: attr(data-ghost); position: absolute; left: -0.04em; top: 50%; transform: translateY(-50%); font-family: 'Outfit', sans-serif; font-size: 11cqw; font-weight: 900; color: var(--pink-light); letter-spacing: 0.06em; z-index: -1; line-height: 1; pointer-events: none; user-select: none; white-space: nowrap; overflow: hidden; max-width: 100%; }
  .service-tagline { font-size: 18px; font-weight: 700; color: var(--ink); line-height: 1.65; margin: 0 0 14px; }
  .service-text p.lead { font-size: var(--fs-body); color: var(--sub); line-height: 1.9; margin-bottom: 20px; }
  .tag-list { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 0; margin-top: 20px; padding: 0; }
  .tag { display: inline-block; background: #1E2836; border: 1px solid #1E2836; color: #ffffff; font-size: var(--fs-tag); font-weight: 500; padding: 5px 14px; border-radius: 9999px; white-space: nowrap; flex-shrink: 0; }
  .flow-steps { display: flex; gap: 0; margin-top: 0; position: relative; background: #fff; overflow: visible; }
  .flow-steps::after { content: ''; position: absolute; bottom: 0; left: 0; right: 10%; height: 1px; background: #808080; }
  .flow-step { display: flex; flex-direction: column; gap: 2px; padding: 32px 40px 32px 28px; border-bottom: none; align-items: flex-start; position: relative; flex: 1; margin-left: -1px; background: #fff; }
  .flow-step::after { content: '〉'; position: absolute; right: -35px; top: 50%; transform: translateY(-40%) scaleX(0.6); font-size: 100px; z-index: 1; pointer-events: none; font-weight: 100; line-height: 1; background: linear-gradient(to right, #FDE8EF, #F4C6D3); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; will-change: transform; }
  .flow-step:nth-child(1)::after { background: linear-gradient(to right, #FDE8EF, #F4C6D3); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
  .flow-step:nth-child(2)::after { right: -45px; background: linear-gradient(to right, #F4C6D3, #E99BB3); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
  .flow-step:first-child { margin-left: 0; padding-left: 24px; }
  .flow-step:last-child::after { display: none; }
  .flow-step:nth-child(1) { z-index: 3; }
  .flow-step:nth-child(2) { z-index: 2; }
  .flow-step:nth-child(3) { z-index: 1; }
  .step-num { font-family: 'Outfit', sans-serif; font-size: 48px; font-weight: 700; color: #F4C6D3; letter-spacing: -.02em; flex-shrink: 0; margin-bottom: 8px; line-height: 1; position: relative; z-index: 2; background: #fff; display: inline-block; }
  .step-num::before { content: 'STEP'; display: block; font-size: 11px; font-weight: 700; color: #F4C6D3; letter-spacing: .15em; position: absolute; top: -16px; left: 0; }
  .step-num::after { content: ''; position: absolute; left: 100%; top: 50%; width: 80px; height: 4px; background: #F4C6D3; margin-left: 12px; border-radius: 2px; }
  .flow-step:nth-child(1) .step-num { color: #F4C6D3; }
  .flow-step:nth-child(1) .step-num::before { color: #F4C6D3; }
  .flow-step:nth-child(1) .step-num::after { background: #F4C6D3; }
  .flow-step:nth-child(2) .step-num { color: #E99BB3; }
  .flow-step:nth-child(2) .step-num::before { color: #E99BB3; }
  .flow-step:nth-child(2) .step-num::after { background: #E99BB3; }
  .flow-step:nth-child(3) .step-num { color: #DE7A9A; }
  .flow-step:nth-child(3) .step-num::before { color: #DE7A9A; }
  .flow-step:nth-child(3) .step-num::after { background: #DE7A9A; }
  .step-body h4 { font-size: 18px; font-weight: 700; margin-bottom: 8px; color: var(--ink); }
  .step-body p { font-size: var(--fs-body); color: var(--sub); line-height: 1.75; }

  /* SERVICE VISUAL */
  .service-visual { background: var(--pink-light); border: 1px solid var(--line); border-radius: var(--radius); aspect-ratio: 3/2; display: flex; align-items: center; justify-content: center; width: 100%; max-width: 380px; margin-left: auto; margin-right: 0; overflow: hidden; }
  .service-visual svg { width: 90%; height: auto; max-width: 90%; transform: translateY(-8%); }
  .service-visual svg { width: 90%; height: auto; max-width: 90%; }
  .service-block.alt .service-visual { background: #fff; }
  .service-block#planning .service-visual svg { width: 105%; max-width: 105%; transform: translateY(-2%); }
  .service-block#development .service-visual svg { width: auto; max-width: 100%; height: 100%; max-height: 100%; transform: none; }
  .service-block#operation .service-visual svg { width: 120%; max-width: 120%; transform: translateY(3%); }

  /* CONTACT CTA */
  .contact-cta { background: #fff; border-top: 1px solid var(--line); padding: 72px 0; }
  .contact-cta .cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 48px; }
  .contact-cta .eyebrow { color: var(--pink-dark); }
  .contact-cta h2 { font-size: 26px; font-weight: 700; color: var(--ink); margin-top: 10px; margin-bottom: 10px; line-height: 1.45; }
  .contact-cta p { font-size: var(--fs-body); color: var(--sub); line-height: 1.8; }
  .contact-cta .btn-cta { display: inline-block; background: var(--ink); color: #fff; padding: 16px 40px; border-radius: 9999px; font-size: 14px; font-weight: 700; text-decoration: none; transition: all .35s cubic-bezier(.4,0,.2,1); white-space: nowrap; flex-shrink: 0; box-shadow: 0 6px 24px rgba(20,28,36,.12); }
  .contact-cta .btn-cta:hover { background: #2D3748; transform: translateY(-2px); box-shadow: 0 10px 36px rgba(20,28,36,.18); }

  html { scroll-behavior: smooth; scroll-padding-top: 96px; }

  /* ACHIEVEMENT */
  .achievement { background: var(--bg-soft); padding: 0; }
  .achievement .wrap { padding-top: 0; padding-bottom: 0; }
  .achievement-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
  .achievement-item { background: var(--bg); padding: 36px 24px; text-align: center; }
  .achievement-num { display: block; font-size: 44px; font-weight: 700; color: var(--ink); letter-spacing: -.02em; line-height: 1.1; margin-bottom: 8px; }
  .achievement-num sup { font-size: 22px; vertical-align: super; }
  .achievement-lbl { font-size: var(--fs-note); color: var(--sub); }

  /* SECTION HEAD */
  .section-head { margin-bottom: 48px; }
  .section-head h2 { font-size: 28px; font-weight: 700; margin-top: 10px; margin-bottom: 14px; }
  .section-head p { font-size: var(--fs-body); color: var(--sub); line-height: 1.85; max-width: 600px; }
  .cases-section .section-head h2 { font-size: 42px; }

  /* CASES */
  .cases-section { background: var(--bg); }
  .cases-section .section-head p { max-width: none; }
  .cases-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 40px; }
  .case-card { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; color: inherit; display: flex; flex-direction: column; background: var(--bg); height: 100%; }
  .case-card-thumb { padding: 32px 24px; display: flex; align-items: center; justify-content: center; background: var(--bg-soft); overflow: hidden; height: 200px; }

  /* device scene (stylized, no real screenshot) */
  .case-scene { width: 100%; display: flex; align-items: flex-end; justify-content: center; gap: 14px; }
  .case-scene--solo { gap: 0; }

  .scr-bar { display: flex; align-items: center; gap: 4px; padding: 5px 7px; border-bottom: 1px solid var(--line); }
  .scr-bar i { width: 5px; height: 5px; border-radius: 50%; background: #E2E6EC; }
  .scr-body { padding: 12px; }

  /* desktop monitor */
  .dev-pc { width: 60%; max-width: 176px; }
  .case-scene--solo .dev-pc { width: 86%; max-width: 248px; }
  .dev-pc-screen { background: #fff; border: 1px solid rgba(36,48,64,.10); border-radius: 7px; box-shadow: 0 8px 18px rgba(36,48,64,.10); overflow: hidden; }
  .dev-pc-stand { width: 38px; height: 6px; border-radius: 0 0 4px 4px; background: #DDE2E9; margin: 0 auto; }
  .dev-pc-stand::before { content: ''; display: block; width: 12px; height: 4px; background: #E6EAF0; margin: 0 auto; }

  /* desktop content: dashboard */
  .scr-dash { display: flex; gap: 7px; }
  .scr-dash-side { display: flex; flex-direction: column; gap: 5px; width: 22px; flex-shrink: 0; }
  .scr-dash-side span { height: 4px; border-radius: 2px; background: #EEF1F5; }
  .scr-dash-side span:first-child { background: var(--case-accent, var(--pink)); opacity: .85; }
  .scr-dash-main { flex: 1; display: flex; flex-direction: column; gap: 7px; min-width: 0; }
  .scr-chart { display: flex; align-items: flex-end; gap: 5px; height: 52px; }
  .scr-chart span { flex: 1; border-radius: 2px 2px 0 0; background: var(--case-accent, var(--pink)); opacity: .34; }
  .scr-chart span:nth-child(even) { opacity: .6; }
  .scr-rows { display: flex; flex-direction: column; gap: 7px; }
  .scr-rows span { height: 4px; border-radius: 2px; background: #EEF1F5; }
  .scr-rows span:nth-child(1) { width: 92%; }
  .scr-rows span:nth-child(2) { width: 70%; }

  /* desktop content: list (来場管理) */
  .scr-list { display: flex; flex-direction: column; gap: 11px; }
  .scr-list-row { display: flex; align-items: center; gap: 8px; }
  .scr-list-row i { width: 13px; height: 13px; border-radius: 50%; background: var(--case-tint, #eee); border: 1.5px solid var(--case-accent, var(--pink)); flex-shrink: 0; }
  .scr-list-row b { display: block; height: 4px; border-radius: 2px; background: #EEF1F5; flex: 1; }
  .scr-list-row b.s { max-width: 42%; }

  /* desktop content: spreadsheet (帳票) */
  .scr-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 5px; }
  .scr-grid span { height: 13px; border-radius: 2px; background: #F1F3F7; }
  .scr-grid span.h { background: var(--case-accent, var(--pink)); opacity: .5; }
  .scr-grid span.t { background: var(--case-accent, var(--pink)); opacity: .26; }

  /* tablet (iPad) */
  .dev-tablet { width: 82px; flex-shrink: 0; background: #fff; border: 1px solid rgba(36,48,64,.12); border-radius: 10px; padding: 11px 9px; box-shadow: 0 8px 18px rgba(36,48,64,.12); }
  .tab-screen { display: flex; flex-direction: column; gap: 11px; }
  .tab-chk { display: flex; align-items: center; gap: 7px; }
  .tab-chk i { width: 12px; height: 12px; border-radius: 3px; background: var(--case-accent, var(--pink)); flex-shrink: 0; position: relative; }
  .tab-chk i::after { content: ''; position: absolute; left: 3.5px; top: 2px; width: 3.5px; height: 6px; border: solid #fff; border-width: 0 1.6px 1.6px 0; transform: rotate(40deg); }
  .tab-chk b { display: block; height: 4px; border-radius: 2px; background: #EEF1F5; flex: 1; }

  /* phone (受付) */
  .dev-phone { width: 56px; flex-shrink: 0; background: #fff; border: 1px solid rgba(36,48,64,.12); border-radius: 13px; padding: 11px 6px 13px; box-shadow: 0 8px 18px rgba(36,48,64,.12); }
  .ph-screen { display: flex; flex-direction: column; align-items: center; gap: 9px; }
  .ph-head { width: 62%; height: 4px; border-radius: 2px; background: #EEF1F5; }
  .ph-scan { width: 38px; height: 38px; border-radius: 7px; border: 1.5px dashed var(--case-accent, var(--pink)); position: relative; }
  .ph-scan::after { content: ''; position: absolute; left: 6px; right: 6px; top: 50%; height: 1.5px; background: var(--case-accent, var(--pink)); opacity: .75; }
  .ph-btn { width: 76%; height: 9px; border-radius: 4px; background: var(--case-accent, var(--pink)); opacity: .9; margin-top: 2px; }
  .case-card-body { padding: 32px; flex: 1; display: flex; flex-direction: column; }
  .case-card-left { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 16px; }
  .case-card-number { font-family: 'Outfit', sans-serif; font-size: 48px; font-weight: 800; color: var(--case-accent, var(--pink)); line-height: 1; }
  .case-card-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
  .case-tag { display: inline-block; background: var(--case-tint, var(--pink-light)); color: var(--case-accent, var(--pink-dark)); font-size: var(--fs-tag); font-weight: 700; padding: 3px 10px; border-radius: 9999px; }
  .case-status { display: inline-block; font-size: var(--fs-tag); font-weight: 700; padding: 3px 8px; border-radius: 9999px; }
  .status-trial { background: #fff3cd; color: #856404; }
  .status-dev   { background: #d1ecf1; color: #0c5460; }
  .case-card-right { display: flex; flex-direction: column; flex: 1; }
  .case-card-body h3 { font-size: 20px; font-weight: 700; line-height: 1.5; margin-bottom: 16px; word-break: normal; text-wrap: wrap; }
  .case-card-body p { font-size: var(--fs-body); color: var(--sub); line-height: 1.75; }
  .case-story { margin-bottom: 16px; }
  .case-detail { border-top: 1px solid var(--line); padding-top: 16px; margin-top: auto; }
  .case-detail-row { display: flex; gap: 24px; }
  .case-detail-col { flex: 1; min-width: 0; }
  .case-detail-label { font-size: var(--fs-note); font-weight: 700; color: var(--sub); letter-spacing: .08em; margin-bottom: 6px; }
  .case-tech-list { display: flex; flex-wrap: wrap; gap: 4px; }
  .tech-badge { display: inline-block; font-size: var(--fs-tag); font-weight: 500; padding: 2px 7px; border-radius: 9999px; }
  .tech-badge:nth-child(odd) { background: #ffffff; border: 1px solid var(--line); color: var(--ink); }
  .tech-badge:nth-child(even) { background: #f8f8f8; border: 1px solid var(--line); color: var(--ink); }
  .tech-badge--sub { background: transparent; color: var(--sub); border-color: #d8dce2; }
  .case-team { font-size: var(--fs-note); color: var(--sub); line-height: 1.6; }
  .case-story { display: flex; flex-direction: column; gap: 8px; }
  .case-story-row { display: grid; grid-template-columns: 36px 1fr; gap: 10px; align-items: start; }
  .case-story-row dt { font-size: 12px; font-weight: 700; letter-spacing: .04em; color: #fff; background: var(--sub); border-radius: 4px; padding: 3px 0; text-align: center; }
  .case-story-row.is-effect dt { background: var(--case-accent, var(--pink)); }
  .case-story-row dd { font-size: var(--fs-body); color: var(--sub); line-height: 1.7; word-break: normal; text-wrap: wrap; }
  /* タブレット中間帯：多列を2列に間引いて窮屈さを解消 */
  @media (min-width: 769px) and (max-width: 1080px) {
    .cases-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .service-inner { gap: 44px; }
    .case-card-body { padding: 28px 24px; }
    /* フローステップの矢印サイズ調整 */
    .flow-step::after {
      font-size: 85px;
      right: -30px;
    }
  }
  @media (min-width: 769px) and (max-width: 1200px) {
    .cases-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  }
  .case-more-link { display: block; font-size: 12px; font-weight: 700; color: var(--pink); margin-top: 14px; }
  .cases-more { text-align: center; }
  .btn-outline { display: inline-block; border: 1.5px solid var(--line); color: var(--ink); padding: 12px 36px; border-radius: 9999px; font-size: 13px; font-weight: 700; text-decoration: none; transition: all .35s cubic-bezier(.4,0,.2,1); }
  .btn-outline:hover { border-color: var(--pink); color: var(--pink); background: var(--bg-soft); transform: translateY(-2px); }

  /* REPORTS */
  .reports-section { background: var(--bg-soft); }
  .report-list { border-top: 1px solid var(--line); margin-bottom: 40px; }
  .report-item { display: flex; gap: 24px; align-items: flex-start; padding: 22px 0; border-bottom: 1px solid var(--line); text-decoration: none; color: inherit; transition: color .2s; }
  .report-item:hover { color: var(--pink); }
  .report-item:hover .report-title { color: var(--pink); }
  .report-date { font-size: 13px; color: var(--sub); white-space: nowrap; flex-shrink: 0; padding-top: 3px; min-width: 90px; }
  .report-cat { display: inline-block; border: 1px solid var(--line); font-size: var(--fs-tag); font-weight: 700; padding: 3px 10px; border-radius: 9999px; white-space: nowrap; flex-shrink: 0; margin-top: 1px; }
  .cat-case { background: var(--pink-light); color: var(--pink-dark); }
  .cat-tech { background: #eef4ff; color: #3a6fcf; }
  .report-title { font-size: 14px; font-weight: 500; line-height: 1.65; }
  .reports-more { text-align: center; }

  /* RESPONSIVE */
  /* タブレット (768px - 1024px) */
  @media (max-width: 1024px) and (min-width: 769px) {
    .wrap { padding: 0 32px; }

    /* サービスブロック */
    .service-inner { gap: 48px; }
    .service-visual { max-width: 340px; }

    /* フローステップ */
    .flow-step { padding: 24px 32px 24px 20px; }
    .flow-step::after { right: -30px; font-size: 90px; }

    /* AI セクション */
    .ai-section-wrapper { padding: 64px 0 100px; }
    .ai-strength-title { font-size: 42px; }
    .ai-strength-title.animate-in { font-size: 48px; }

    /* ケーススタディ */
    .case-card-body { padding: 28px; }
    .case-card-left { flex-direction: column; align-items: flex-start; gap: 8px; }
  }

  /* モバイル (〜768px) */
  @media (max-width: 768px) {
    section { padding: 56px 0; }
    .wrap { padding: 0 20px; }
    .ai-strength-section,
    .ai-power-grid,
    .ai-footer-line,
    .ai-footer-text {
      padding: 0 20px;
    }

    /* リード */
    .lead-section { padding: 56px 0 28px; }
    .lead-section h2 { font-size: 28px; line-height: 1.55; }

    /* ページヒーロー */
    .page-hero { padding: 24px 0 40px; }
    .page-hero h1 { font-size: 26px; }

    /* セクションヘッド */
    .section-head h2 { font-size: 24px; }

    /* ベネフィット */
    .benefit h3 { font-size: 18px; }

    /* サイクル */
    .cycle { margin-bottom: 80px; }
    .cycle-en-small { font-size: 10px; letter-spacing: .1em; }
    .cycle-jp { font-size: 16px; }
    .cycle-arrow span { font-size: 13px; }
    .cycle-loop { padding: 14px 20px; }
    .cycle-loop-text strong { font-size: 16px; }
    .cycle-loop-text span { font-size: 14px; }

    /* サービスブロック */
    .service-inner { grid-template-columns: 1fr; gap: 32px; }
    .service-inner.reverse { direction: ltr; }
    .service-visual {
      max-width: 100%;
      margin: 0 auto;
      aspect-ratio: 4/3;
    }
    .service-visual svg {
      width: 100%;
      max-width: 100%;
      transform: translateY(0);
    }

    .service-block#planning .service-inner { padding: 28px 20px; }
    .service-block#development .service-inner { padding: 28px 20px; }
    .service-block#operation .service-inner { padding: 28px 20px; }
    .service-block#planning .service-bottom { padding: 20px 20px 36px; }
    .service-block#development .service-bottom { padding: 20px 20px 36px; }
    .service-block#operation .service-bottom { padding: 20px 20px 36px; }

    .service-block#planning .service-text h2 { font-size: 26px; }
    .service-block#development .service-text h2 { font-size: 26px; }
    .service-block#operation .service-text h2 { font-size: 26px; }
    .service-text h2 { font-size: 22px; }
    .service-title-ghost::before { left: 0; }
    .service-tagline { font-size: 16px; }
    .service-text p.lead { font-size: 16px; }
    .tag { padding: 3px 10px; }

    /* フローステップ */
    .flow-steps { flex-direction: column; gap: 16px; }
    .flow-steps::after { display: none; }
    .flow-step { padding: 20px; margin-left: 0; }
    .flow-step::after { display: none; }
    .step-num { font-size: 42px; margin-bottom: 4px; }
    .step-num::before { font-size: 10px; top: -14px; }
    .step-num::after { display: none; }
    .step-body h4 { font-size: 18px; }

    /* AIセクション */
    .ai-section-wrapper {
      padding: 56px 0 80px;
      border-radius: 80px 80px 0 0;
      overflow-x: clip;
    }
    /* モバイルではスクロール演出に頼らず常に表示する
       （IntersectionObserver 未発火でタイトルが消えるのを防ぐ） */
    .ai-strength-title {
      font-size: 34px;
      opacity: 1;
      transform: none;
    }
    .ai-strength-title.animate-in { font-size: 34px; }
    .ai-strength-subtitle { font-size: 18px; }
    .ai-strength-desc { font-size: 16px; }
    .ai-power-grid { margin-top: 36px; }
    .ai-card { padding: 28px 20px; }
    .ai-card-number { font-size: 64px; top: 16px; left: 16px; }
    .ai-card-title { font-size: 20px; margin-top: 32px; }
    .ai-card-desc { font-size: 16px; }
    .ai-card--wide {
      padding: 28px 24px;
      align-items: center;
      max-width: none;
    }
    .ai-card-badge { font-size: 18px; padding: 5px 12px; }
    .ai-card-desc-main { font-size: 16px; text-align: center; }

    /* ケーススタディ */
    .cases-section { padding: 56px 0; }
    .cases-section .section-head h2 { font-size: 26px; }
    .cases-grid { grid-template-columns: 1fr; gap: 20px; }
    .case-card { flex-direction: column; }
    .case-card-thumb { padding: 24px 16px; height: 180px; }
    .case-card-body { padding: 24px 20px; }
    .case-card-left {
      flex-direction: row;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
    }
    .case-card-number { font-size: 36px; }
    .case-card-meta { margin-bottom: 0; }
    .case-card-right { flex: 1; }
    .case-card-body h3 { font-size: 17px; line-height: 1.55; margin-bottom: 12px; }
    .case-story { margin-bottom: 12px; }
    .case-story-row { gap: 8px; }
    .case-story-row dt { font-size: 11px; }
    .case-detail { padding-top: 12px; margin-top: 12px; }

    /* その他 */
    .footer-inner { flex-direction: column; gap: 28px; }
    .footer-nav { justify-content: flex-start; gap: 14px 20px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; gap: 10px; }
    .achievement-grid { grid-template-columns: repeat(2, 1fr); }
    .report-item { flex-wrap: wrap; gap: 8px; }
    .contact-cta { padding: 56px 0; }
    .contact-cta .cta-inner { flex-direction: column; align-items: flex-start; gap: 24px; }
    .contact-cta h2 { font-size: 22px; }
  }

  @media (min-width: 1440px) {
    .wrap { max-width: 1320px; padding: 0 60px; }
    section { padding: 92px 0; }
    .lead-inner { max-width: 960px; }
    .page-hero { padding: 100px 0; }
    .page-hero h1 { font-size: 52px; }
    h2.title { font-size: 40px; }
    .service-grid { gap: 48px; }
    .service-card { padding: 48px; }
    .step-grid { gap: 48px; }
  }

  @media (min-width: 1920px) {
    .wrap { max-width: 1400px; padding: 0 80px; }
    section { padding: 104px 0; }
    .page-hero { padding: 120px 0; }
    .page-hero h1 { font-size: 56px; }
    h2.title { font-size: 44px; }
    .service-grid { gap: 56px; }
    .service-card { padding: 56px; }
    .service-card h3 { font-size: 26px; }
    .service-card p { line-height: 2.1; max-width: 600px; }
    .step-grid { gap: 56px; }
  }

  /* INTERVIEW BADGE */
  .interview-badge-wrapper {
    position: fixed;
    bottom: 60px;
    right: 32px;
    z-index: 9998;
    animation: interview-badge-slide-up 0.9s cubic-bezier(.16,1,.3,1) 0.5s both;
    transition: opacity .3s ease, transform .3s ease;
  }

  .interview-badge-bg {
    position: relative;
  }

  .interview-badge-close {
    position: absolute;
    top: -8px;
    right: -8px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #D4637E;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .3s ease;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(212,99,126,.3);
    opacity: 0;
    pointer-events: none;
  }

  .interview-badge-wrapper:hover .interview-badge-close {
    opacity: 1;
    pointer-events: auto;
  }

  .interview-badge-close svg {
    width: 16px;
    height: 16px;
    color: white;
  }

  .interview-badge-close:hover {
    background: #C04C68;
    transform: scale(1.1);
  }

  .interview-badge {
    display: block;
    text-decoration: none;
    transition: all .35s cubic-bezier(.4,0,.2,1);
  }

  .interview-badge-card {
    background: white;
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0,0,0,.12), 0 2px 8px rgba(0,0,0,.08);
    width: 200px;
  }

  @keyframes interview-badge-slide-up {
    from {
      opacity: 0;
      transform: translateY(40px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }

  /* フィードバックFABボタンの位置調整 */
  .fbp-fab {
    bottom: 230px !important;
  }

  .interview-badge:hover .interview-badge-card {
    transform: scale(1.02);
    box-shadow: 0 4px 16px rgba(0,0,0,.12);
  }

  .interview-badge-label {
    font-size: var(--fs-tag);
    font-weight: 700;
    color: #D4637E;
    letter-spacing: .12em;
    margin-bottom: 8px;
  }

  .interview-badge-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: .02em;
    line-height: 1.4;
    margin-bottom: 16px;
  }

  .interview-badge-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    color: #fff;
    background: #D4637E;
    padding: 10px 24px;
    border-radius: 9999px;
    letter-spacing: .04em;
    transition: all .3s cubic-bezier(.4,0,.2,1);
    box-shadow: 0 2px 8px rgba(212,99,126,.2);
  }

  .interview-badge:hover .interview-badge-button {
    background: #C04C68;
    box-shadow: 0 6px 16px rgba(212,99,126,.4);
    transform: translateY(-2px);
  }
  @media (max-width: 768px) {
    .interview-badge-wrapper {
      bottom: 56px;
      right: 16px;
    }
    .interview-badge-card {
      width: 180px;
      padding: 16px;
      border-radius: 14px;
    }
    .interview-badge-close {
      width: 28px;
      height: 28px;
      top: -6px;
      right: -6px;
    }
    .interview-badge-close svg {
      width: 14px;
      height: 14px;
    }
    .interview-badge-label {
      margin-bottom: 6px;
    }
    .interview-badge-title {
      font-size: 13px;
      margin-bottom: 14px;
    }
    .interview-badge-button {
      font-size: 12px;
      padding: 8px 20px;
    }
    .fbp-fab {
      bottom: 210px !important;
    }
  }
  /* 小画面モバイル (〜480px) */
  @media (max-width: 480px) {
    .wrap { padding: 0 16px; }
    section { padding: 48px 0; }

    /* ページヒーロー */
    .page-hero { padding: 20px 0 32px; }
    .page-hero h1 { font-size: 24px; }

    /* リード */
    .lead-section { padding: 48px 0 24px; }
    .lead-section h2 { font-size: 24px; line-height: 1.6; }

    /* セクションヘッド */
    .section-head h2 { font-size: 22px; }

    /* サイクル */
    .cycle { margin-top: 40px; margin-bottom: 60px; }
    .cycle-node { padding: 20px 14px; }
    .cycle-node::before { font-size: 28px; left: 10px; }
    .cycle-en-small { font-size: 9px; }
    .cycle-jp { font-size: 15px; }
    .cycle-node-arrow { width: 28px; height: 28px; }
    .cycle-loop { padding: 12px 16px; }
    .cycle-loop-icon { width: 26px; height: 26px; }
    .cycle-loop-text strong { font-size: 15px; }
    .cycle-loop-text span { font-size: 13px; }

    /* サービスブロック */
    .service-block#planning,
    .service-block#development,
    .service-block#operation {
      padding: 40px 0 56px;
    }

    .service-block#planning .service-inner,
    .service-block#development .service-inner,
    .service-block#operation .service-inner {
      padding: 24px 16px;
      gap: 24px;
    }

    .service-block#planning .service-bottom,
    .service-block#development .service-bottom,
    .service-block#operation .service-bottom {
      padding: 16px 16px 32px;
    }

    .service-text .eyebrow { font-size: 10px; margin-bottom: 10px; }
    .service-title-ghost { font-size: 24px; margin-bottom: 12px; }
    .service-title-ghost::before { left: 0; }
    .service-tagline { font-size: 16px; margin-bottom: 12px; }
    .service-text p.lead { font-size: 16px; line-height: 1.85; }

    .service-visual { aspect-ratio: 4/3; }

    /* フローステップ */
    .flow-steps { gap: 12px; }
    .flow-step { padding: 16px; }
    .step-num { font-size: 38px; }
    .step-num::before { font-size: 9px; top: -12px; }
    .step-body h4 { font-size: 18px; }

    .tag-list { gap: 6px; margin-top: 16px; }
    .tag { padding: 3px 9px; }

    /* AIセクション */
    .ai-section-wrapper {
      padding: 48px 0 64px;
      border-radius: 60px 60px 0 0;
      overflow-x: clip;
    }
    .ai-strength-section { padding: 0 16px; }
    .ai-strength-title { font-size: 30px; opacity: 1; transform: none; }
    .ai-strength-title.animate-in { font-size: 30px; }
    .ai-strength-subtitle { font-size: 16px; margin-bottom: 16px; }
    .ai-strength-desc { font-size: 16px; line-height: 1.85; }

    .ai-power-grid { gap: 12px; margin-top: 32px; padding: 0 16px; }
    .ai-card { padding: 24px 16px; border-radius: 10px; }
    .ai-card-number { font-size: 56px; top: 12px; left: 12px; }
    .ai-card-title { font-size: 18px; margin-top: 28px; margin-bottom: 10px; }
    .ai-card-desc { font-size: 16px; line-height: 1.75; }
    .ai-card--wide {
      padding: 24px 20px;
      border-radius: 16px;
      align-items: center;
      max-width: none;
    }
    .ai-card-badge { font-size: 16px; padding: 4px 10px; margin-bottom: 12px; }
    .ai-card-desc-main { font-size: 16px; line-height: 1.8; text-align: center; }

    .ai-footer-line { margin: 32px auto 20px; padding: 0 16px; }
    .ai-footer-text { font-size: 16px; padding: 0 16px; }

    /* ケーススタディ */
    .cases-section { padding: 48px 0; }
    .cases-section .section-head { margin-bottom: 32px; }
    .cases-section .section-head h2 { font-size: 24px; }
    .cases-grid { gap: 16px; }
    .case-card-thumb { height: 160px; padding: 20px 12px; }

    /* デバイスシーンのサイズ調整 */
    .dev-pc { width: 55%; max-width: 150px; }
    .case-scene--solo .dev-pc { width: 75%; max-width: 200px; }
    .dev-tablet { width: 70px; }
    .dev-phone { width: 48px; }
    .case-card-body { padding: 20px 16px; }
    .case-card-left {
      flex-direction: column;
      align-items: flex-start;
      gap: 8px;
      margin-bottom: 12px;
    }
    .case-card-number { font-size: 32px; line-height: 1; }
    .case-card-meta { margin-bottom: 0; }
    .case-card-right { flex: 1; }
    .case-card-body h3 { font-size: 16px; line-height: 1.6; margin-bottom: 10px; word-break: normal; text-wrap: wrap; }
    .case-card-body h3 .nowrap-sp { display: inline-block; white-space: nowrap; }
    .case-story { margin-bottom: 10px; gap: 6px; }
    .case-story-row { grid-template-columns: 32px 1fr; gap: 8px; }
    .case-story-row dt { font-size: 10px; padding: 2px 0; }
    .case-story-row dd { line-height: 1.65; word-break: normal; text-wrap: wrap; }
    .case-detail { padding-top: 10px; margin-top: 10px; }
    .case-detail-label { margin-bottom: 5px; }
    .case-tech-list { gap: 3px; }
    .tech-badge { padding: 2px 6px; }

    /* インタビューバッジ */
    .interview-badge-wrapper {
      bottom: 52px;
      right: 12px;
    }
    .interview-badge-card {
      width: 165px;
      padding: 14px;
      border-radius: 12px;
    }
    .interview-badge-close {
      width: 26px;
      height: 26px;
      top: -6px;
      right: -6px;
    }
    .interview-badge-close svg {
      width: 13px;
      height: 13px;
    }
    .interview-badge-label {
      margin-bottom: 6px;
    }
    .interview-badge-title {
      font-size: 12px;
      margin-bottom: 12px;
    }
    .interview-badge-button {
      font-size: 11px;
      padding: 7px 16px;
    }
    .fbp-fab {
      bottom: 195px !important;
    }
  }