:root {
    --white: #ffffff;
    --off-white: #f8f7f5;
    --light: #f2f0ec;
    --border: #e5e2db;
    --border-light: #eeebe5;
    --text: #1a1814;
    --text-mid: #4a4740;
    --text-soft: #8a8780;
    --accent: #b5824a;
    --accent-light: #d4a870;
    --accent-pale: #f5ede0;
  }

  *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
  html { scroll-behavior: smooth; }

  body {
    font-family: 'Noto Serif JP', serif;
    background: var(--white);
    color: var(--text);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
  }

  /* ── CURSOR ── */
  .cursor {
    width: 6px; height: 6px; background: var(--accent);
    border-radius: 50%; position: fixed; pointer-events: none;
    z-index: 9999; transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s, opacity 0.3s;
    mix-blend-mode: multiply;
  }
  .cursor-ring {
    width: 32px; height: 32px; border: 1px solid rgba(181,130,74,0.4);
    border-radius: 50%; position: fixed; pointer-events: none;
    z-index: 9998; transform: translate(-50%, -50%);
    transition: all 0.15s ease;
  }

  /* ── NAV ── */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 52px; height: 68px;
    transition: box-shadow 0.3s;
  }
  nav ul {
    margin-left: auto;
  }
  nav.scrolled { box-shadow: 0 2px 24px rgba(26,24,20,0.06); }
  .nav-logo {
    display: flex;
    align-items: center;
    height: 40px;
  }
  .nav-logo svg {
    height: 40px; width: auto;
    color: var(--text);
  }
  nav ul { list-style: none; display: flex; gap: 40px; align-items: center; margin-left: auto; }
  nav ul li a {
    font-family: 'Noto Serif JP', serif;
    font-size: 12px; font-weight: 400; letter-spacing: 0.12em;
    color: var(--text-soft); text-decoration: none;
    transition: color 0.25s; position: relative;
  }
  nav ul li a::after {
    content: ''; position: absolute; left: 0; bottom: -4px;
    width: 0; height: 1px; background: var(--accent);
    transition: width 0.3s;
  }
  nav ul li a:hover { color: var(--text); }
  nav ul li a:hover::after { width: 100%; }
  .nav-cta {
    font-size: 11px !important; letter-spacing: 0.18em !important;
    color: var(--white) !important; background: var(--text);
    padding: 10px 24px; border: none !important;
    transition: background 0.25s !important;
  }
  .nav-cta::after { display: none !important; }
  .nav-cta:hover { background: var(--accent) !important; color: var(--white) !important; }

  /* ── HERO ── */
  #hero {
    min-height: 100vh;
    display: grid; grid-template-columns: 1fr;
    align-items: center;
    padding: 100px 52px 80px;
    position: relative;
    background: transparent;
    z-index: 1;
  }
  .hero-left {
    max-width: 700px;
  }
  .hero-eyebrow {
    display: flex; align-items: center; gap: 16px;
    font-size: 10px; font-weight: 400; letter-spacing: 0.35em;
    color: var(--accent); text-transform: uppercase;
    margin-bottom: 40px;
    opacity: 0; animation: fadeUp 1s 0.2s forwards;
  }
  .hero-eyebrow::before {
    content: ''; display: block; width: 32px; height: 1px; background: var(--accent);
  }
  .hero-title {
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(42px, 5.5vw, 72px);
    font-weight: 800; line-height: 1.25;
    letter-spacing: 0.02em;
    opacity: 0; animation: fadeUp 1s 0.4s forwards;
  }
  .hero-title .accent { color: var(--accent); }
  .hero-subtitle {
    margin-top: 36px;
    font-size: 14px; font-weight: 300; line-height: 2.3;
    color: var(--text-mid);
    opacity: 0; animation: fadeUp 1s 0.6s forwards;
  }
  .hero-ctas {
    margin-top: 52px; display: flex; gap: 16px; align-items: center;
    opacity: 0; animation: fadeUp 1s 0.8s forwards;
  }
  .btn-primary {
    display: inline-flex; align-items: center; gap: 10px;
    background: var(--text); color: var(--white);
    font-size: 11px; font-weight: 400; letter-spacing: 0.2em;
    padding: 16px 36px; text-decoration: none; border: none; cursor: pointer;
    transition: background 0.3s, transform 0.3s;
  }
  .btn-primary:hover { background: var(--accent); transform: translateY(-1px); }
  .btn-outline {
    display: inline-flex; align-items: center; gap: 10px;
    background: transparent; color: var(--text);
    font-size: 11px; font-weight: 400; letter-spacing: 0.2em;
    padding: 15px 36px; text-decoration: none;
    border: 1px solid var(--border); cursor: pointer;
    transition: border-color 0.3s, color 0.3s;
  }
  .btn-outline:hover { border-color: var(--accent); color: var(--accent); }

  .hero-right {
    display: flex; justify-content: center; align-items: center;
    position: relative;
    opacity: 0; animation: fadeIn 1.2s 0.5s forwards;
  }
  
  

  .hero-scroll-hint {
    position: absolute; bottom: 40px; left: 52px;
    display: flex; align-items: center; gap: 14px;
    font-size: 10px; letter-spacing: 0.25em; color: var(--text-soft);
    opacity: 0; animation: fadeUp 1s 1.2s forwards;
  }
  .scroll-bar {
    width: 1px; height: 40px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: extend 2s ease-in-out infinite;
  }
  @keyframes extend {
    0%, 100% { transform: scaleY(1); opacity: 0.5; }
    50% { transform: scaleY(1.3); opacity: 1; }
  }

  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

  /* ── SECTION BASE ── */
  section { padding: 120px 52px; }
  .inner { max-width: 1100px; margin: 0 auto; }

  .section-eyebrow {
    font-size: 10px; font-weight: 400; letter-spacing: 0.35em;
    text-transform: uppercase; color: var(--accent);
    display: flex; align-items: center; gap: 14px;
    margin-bottom: 24px;
  }
  .section-eyebrow::before {
    content: ''; width: 28px; height: 1px; background: var(--accent);
  }
  .section-title {
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(28px, 3.5vw, 46px);
    font-weight: 800; line-height: 1.35;
    letter-spacing: 0.02em;
  }

  /* ── ABOUT ── */
  #about { background: var(--off-white); position: relative; z-index: 1; }
  .about-grid {
    display: grid; grid-template-columns: 5fr 4fr; gap: 100px; align-items: center;
  }
  .about-text .section-title { margin-bottom: 36px; }
  .about-lead {
    font-family: 'Noto Serif JP', serif;
    font-size: 18px; font-weight: 400; line-height: 2;
    color: var(--text-mid); margin-bottom: 28px;
  }
  .about-body p {
    font-size: 14px; font-weight: 300; line-height: 2.3;
    color: var(--text-mid); margin-bottom: 18px;
  }
  .about-cards {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
    margin-top: 52px; background: var(--border);
  }
  .about-card {
    background: var(--white); padding: 28px 24px;
    transition: background 0.3s;
  }
  .about-card:hover { background: var(--accent-pale); }
  .about-card-icon {
    width: 32px; height: 32px; margin-bottom: 14px;
    border-bottom: 2px solid var(--accent);
    display: flex; align-items: flex-end; padding-bottom: 8px;
    font-size: 14px; color: var(--accent); letter-spacing: 0.1em;
  }
  .about-card h4 {
    font-family: 'Noto Serif JP', serif;
    font-size: 15px; font-weight: 600; margin-bottom: 8px;
  }
  .about-card p {
    font-size: 12px; line-height: 1.9; color: var(--text-soft); font-weight: 300;
  }

  .about-visual {
    position: relative; display: flex; flex-direction: column; gap: 24px;
  }
  .about-img-block {
    background: var(--light);
    aspect-ratio: 3/4;
    display: grid; place-items: center;
    font-family: 'Noto Serif JP', serif;
    font-size: 80px; color: var(--border);
    position: relative; overflow: hidden;
  }
  .about-img-block::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(to right, var(--accent), var(--accent-light));
  }
  .about-stat {
    background: var(--white); padding: 24px 28px;
    border-left: 3px solid var(--accent);
  }
  .about-stat-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 40px; font-weight: 300; color: var(--accent); line-height: 1;
  }
  .about-stat-label {
    font-size: 11px; letter-spacing: 0.15em; color: var(--text-soft); margin-top: 4px;
  }

  /* ── SERVICES ── */
  #services { background: var(--white); position: relative; z-index: 1; }
  .services-header {
    display: flex; justify-content: space-between; align-items: flex-end;
    margin-bottom: 64px; padding-bottom: 40px; border-bottom: 1px solid var(--border);
  }
  .services-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 1px; background: var(--border);
  }
  .service-card {
    background: var(--white); padding: 44px 36px;
    position: relative; overflow: hidden;
    transition: background 0.35s;
    cursor: default;
  }
  .service-card:nth-child(4) { grid-column: span 1; }
  .service-card:nth-child(5) { grid-column: span 2; }
  .service-card:hover { background: var(--off-white); position: relative; z-index: 1; }
  .service-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
    background: linear-gradient(to right, var(--accent), var(--accent-light));
    transform: scaleX(0); transform-origin: left; transition: transform 0.4s;
  }
  .service-card:hover::before { transform: scaleX(1); }
  .service-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 13px; font-weight: 300; letter-spacing: 0.2em; color: var(--accent);
    margin-bottom: 20px;
  }
  .service-card h3 {
    font-family: 'Noto Serif JP', serif;
    font-size: 20px; font-weight: 600; line-height: 1.5;
    margin-bottom: 16px; color: var(--text);
  }
  .service-card p {
    font-size: 13px; font-weight: 300; line-height: 2.2; color: var(--text-soft);
  }
  .service-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
  .tag {
    font-size: 10px; letter-spacing: 0.1em; padding: 5px 12px;
    border: 1px solid var(--border); color: var(--text-soft);
    transition: border-color 0.3s, color 0.3s;
  }
  .service-card:hover .tag { border-color: rgba(181,130,74,0.4); color: var(--accent); }
  .service-card:last-child p { max-width: 700px; }

  /* ── FLOW ── */
  #flow { background: var(--off-white); position: relative; z-index: 1; }
  .flow-header { margin-bottom: 72px; }
  .flow-steps { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--border); }
  .flow-step { background: var(--white); padding: 40px 32px; position: relative; }
  .flow-step::after {
    content: '→'; position: absolute; right: -20px; top: 50%;
    transform: translateY(-50%);
    font-size: 18px; color: var(--border); z-index: 1;
  }
  .flow-step:last-child::after { display: none; }
  .flow-num {
    font-family: 'Cormorant Garamond', serif;
    font-size: 48px; font-weight: 300; color: var(--accent-pale);
    line-height: 1; margin-bottom: 20px; display: block;
  }
  .flow-step h4 {
    font-family: 'Noto Serif JP', serif;
    font-size: 16px; font-weight: 600; margin-bottom: 12px; color: var(--text);
  }
  .flow-step p {
    font-size: 12px; font-weight: 300; line-height: 2; color: var(--text-soft);
  }

  /* ── FAQ ── */
  #faq { background: var(--white); position: relative; z-index: 1; }
  .faq-layout {
    display: grid; grid-template-columns: 2fr 3fr; gap: 100px; align-items: start;
  }
  .faq-sticky { position: sticky; top: 100px; }
  .faq-list { margin-top: 0; }
  .faq-item { border-bottom: 1px solid var(--border); }
  .faq-question {
    width: 100%; text-align: left; background: none; border: none; cursor: pointer;
    padding: 26px 0; display: flex; justify-content: space-between; align-items: flex-start;
    gap: 20px;
  }
  .faq-q-text {
    font-family: 'Noto Serif JP', serif;
    font-size: 14px; font-weight: 400; color: var(--text); line-height: 1.7;
    text-align: left;
  }
  .faq-toggle {
    width: 22px; height: 22px; flex-shrink: 0; margin-top: 2px;
    border: 1px solid var(--border); display: grid; place-items: center;
    font-size: 14px; color: var(--accent); transition: transform 0.3s, border-color 0.3s;
    font-weight: 300; line-height: 1;
  }
  .faq-item.open .faq-toggle { transform: rotate(45deg); border-color: var(--accent); }
  .faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.4s ease; }
  .faq-item.open .faq-answer { max-height: 300px; }
  .faq-answer p {
    padding-bottom: 24px;
    font-size: 13px; font-weight: 300; line-height: 2.2; color: var(--text-soft);
  }

  /* ── BLOG ── */
  #blog { background: var(--off-white); position: relative; z-index: 1; }
  .blog-header {
    display: flex; justify-content: space-between; align-items: flex-end;
    margin-bottom: 56px;
  }
  .blog-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 24px; }
  .blog-card {
    background: var(--white); border: 1px solid var(--border);
    overflow: hidden; cursor: pointer;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
  }
  .blog-card:hover {
    border-color: var(--accent-light); transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(26,24,20,0.06);
  }
  .blog-thumb {
    height: 200px;
    background: var(--light); display: grid; place-items: center;
    border-bottom: 1px solid var(--border);
    font-family: 'Noto Serif JP', serif;
    font-size: 56px; color: var(--accent-pale);
    position: relative; overflow: hidden;
  }
  .blog-thumb-label {
    position: absolute; bottom: 0; left: 0; right: 0;
    background: linear-gradient(to top, rgba(26,24,20,0.04), transparent);
    height: 60px;
  }
  .blog-body { padding: 28px 24px; }
  .blog-cat {
    font-size: 10px; letter-spacing: 0.25em; text-transform: uppercase;
    color: var(--accent); margin-bottom: 12px; display: block;
  }
  .blog-card h4 {
    font-family: 'Noto Serif JP', serif;
    font-size: 15px; font-weight: 500; line-height: 1.8;
    color: var(--text); margin-bottom: 16px;
  }
  .blog-meta { display: flex; justify-content: space-between; align-items: center; }
  .blog-date { font-size: 11px; color: var(--text-soft); letter-spacing: 0.05em; }
  .blog-more {
    font-size: 10px; color: var(--accent); letter-spacing: 0.15em; text-decoration: none;
  }

  /* ── PHILOSOPHY ── */
  #philosophy { background: var(--text); color: var(--white); padding: 160px 52px; position: relative; z-index: 1; }
  .philosophy-inner { max-width: 800px; margin: 0 auto; }
  .philosophy-inner .section-eyebrow { color: var(--accent-light); }
  .philosophy-inner .section-eyebrow::before { background: var(--accent-light); }
  .philosophy-inner .section-title { color: var(--white); margin-bottom: 60px; }

  .philosophy-quote {
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(20px, 2.5vw, 30px);
    font-weight: 400; line-height: 2.2;
    color: rgba(255,255,255,0.75);
    padding: 48px 0; border-top: 1px solid rgba(255,255,255,0.1);
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: 60px;
  }
  .philosophy-quote em {
    font-style: normal; color: var(--accent-light);
  }
  .philosophy-body p {
    font-size: 14px; font-weight: 300; line-height: 2.5;
    color: rgba(255,255,255,0.55); margin-bottom: 24px;
  }

  .founder-section {
    margin-top: 80px; padding-top: 56px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex; align-items: center; gap: 28px;
  }
  .founder-avatar {
    width: 64px; height: 64px; flex-shrink: 0;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(181,130,74,0.4);
    display: grid; place-items: center;
    font-family: 'Noto Serif JP', serif; font-size: 18px; color: var(--accent-light);
  }
  .founder-info h4 {
    font-family: 'Noto Serif JP', serif;
    font-size: 16px; font-weight: 600; color: var(--white); margin-bottom: 6px;
  }
  .founder-info p { font-size: 12px; color: rgba(255,255,255,0.4); letter-spacing: 0.1em; }

  /* ── CONTACT ── */
  #contact { background: var(--accent-pale); padding: 140px 52px; text-align: center; position: relative; z-index: 1; }
  .contact-inner { max-width: 640px; margin: 0 auto; }
  #contact .section-eyebrow { justify-content: center; }
  #contact .section-eyebrow::before { display: none; }
  #contact h2 {
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(32px, 4vw, 52px); font-weight: 800; line-height: 1.4;
    margin: 24px 0 28px;
  }
  #contact p {
    font-size: 14px; font-weight: 300; line-height: 2.3;
    color: var(--text-mid); margin-bottom: 52px;
  }
  .contact-ctas { display: flex; gap: 16px; justify-content: center; }

  /* ── FOOTER ── */
  footer {
    background: var(--text); position: relative; z-index: 1; color: rgba(255,255,255,0.5);
    padding: 72px 52px 40px;
  }
  .footer-inner {
    max-width: 1100px; margin: 0 auto;
    display: grid; grid-template-columns: 2.5fr 1fr 1fr; gap: 72px;
    padding-bottom: 56px; border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .footer-logo svg {
    height: 32px; width: auto; margin-bottom: 24px;
    color: rgba(255,255,255,0.6);
  }
  .footer-brand p {
    font-size: 12px; line-height: 2.2; font-weight: 300;
  }
  footer h4 {
    font-size: 10px; letter-spacing: 0.3em; text-transform: uppercase;
    color: rgba(255,255,255,0.25); margin-bottom: 24px;
  }
  footer ul { list-style: none; }
  footer ul li { margin-bottom: 14px; }
  footer ul li a {
    font-size: 12px; color: rgba(255,255,255,0.45); text-decoration: none;
    transition: color 0.25s; font-weight: 300;
  }
  footer ul li a:hover { color: var(--accent-light); }
  .footer-bottom {
    max-width: 1100px; margin: 32px auto 0;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 11px; letter-spacing: 0.05em;
  }

  /* ── DIVIDER ── */
  .section-divider {
    height: 1px; background: var(--border);
    max-width: 1100px; margin: 0 auto;
  }

  /* ── REVEAL ── */
  .reveal {
    opacity: 1; transform: none;
    transition: opacity 0.9s ease, transform 0.9s ease;
  }
  .reveal.animate { opacity: 0; transform: translateY(28px); }
  .reveal.animate.visible { opacity: 1; transform: none; }
  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }

  /* ── WORKS ── */
  #works { background: var(--white); position: relative; z-index: 1; }

  .works-stats {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 1px; background: var(--border);
    margin-bottom: 80px;
  }
  .stat-card {
    background: var(--white); padding: 48px 36px;
    text-align: center;
    transition: background 0.3s;
  }
  .stat-card:hover { background: var(--accent-pale); }
  .stat-num {
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(44px, 5vw, 68px);
    font-weight: 700; line-height: 1;
    color: var(--accent); display: block;
    letter-spacing: -0.02em;
  }
  .stat-unit {
    font-size: 18px; font-weight: 400;
    color: var(--accent);
  }
  .stat-label {
    display: block; margin-top: 12px;
    font-size: 12px; font-weight: 400;
    letter-spacing: 0.15em; color: var(--text-soft);
  }

  .works-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .work-card {
    background: var(--off-white);
    overflow: hidden; cursor: pointer;
    transition: transform 0.35s, box-shadow 0.35s;
    position: relative;
  }
  .work-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(26,24,20,0.08);
  }
  .work-card:first-child {
    grid-column: span 2;
  }
  .work-thumb {
    aspect-ratio: 16/9;
    background: var(--light);
    display: flex; align-items: center; justify-content: center;
    overflow: hidden; position: relative;
  }
  .work-card:first-child .work-thumb {
    aspect-ratio: 16/8;
  }
  .work-thumb-label {
    font-family: 'Noto Serif JP', serif;
    font-size: clamp(28px, 4vw, 52px);
    font-weight: 700; color: var(--border);
    letter-spacing: 0.1em; user-select: none;
  }
  .work-thumb-tag {
    position: absolute; top: 16px; left: 16px;
    font-size: 10px; letter-spacing: 0.2em;
    text-transform: uppercase;
    background: var(--text); color: var(--white);
    padding: 5px 12px;
  }
  .work-thumb::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(26,24,20,0.06), transparent);
  }
  .work-body { padding: 24px 24px 28px; }
  .work-client {
    font-size: 10px; letter-spacing: 0.25em;
    text-transform: uppercase; color: var(--accent);
    margin-bottom: 8px; display: block;
  }
  .work-card h4 {
    font-family: 'Noto Serif JP', serif;
    font-size: 15px; font-weight: 500;
    line-height: 1.7; color: var(--text);
    margin-bottom: 12px;
  }
  .work-tags { display: flex; flex-wrap: wrap; gap: 6px; }
  .work-tag {
    font-size: 10px; padding: 3px 10px;
    border: 1px solid var(--border); color: var(--text-soft);
    letter-spacing: 0.08em;
  }

  
  /* ═══════════════════════════════════
     RESPONSIVE — tablet (max 1024px)
  ═══════════════════════════════════ */
  @media (max-width: 1024px) {
    nav { padding: 0 28px; }
    nav ul { gap: 20px; }
    section { padding: 80px 32px; }
    .about-grid { grid-template-columns: 1fr; gap: 48px; }
    .about-visual { display: none; }
    .flow-steps { grid-template-columns: repeat(2, 1fr); }
    .flow-step::after { display: none; }
    .works-stats { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr 1fr; gap: 40px; }
  }

  /* ═══════════════════════════════════
     RESPONSIVE — mobile (max 768px)
  ═══════════════════════════════════ */
  @media (max-width: 768px) {

    /* NAV */
    nav {
      padding: 0 20px;
      height: 56px;
    }
    nav ul { display: none; }
    .nav-logo svg { height: 28px; }

    /* ハンバーガーメニュー */
    .nav-hamburger {
      display: flex; flex-direction: column;
      justify-content: center; gap: 5px;
      width: 36px; height: 36px; cursor: pointer;
      background: none; border: none; padding: 4px;
    }
    .nav-hamburger span {
      display: block; width: 22px; height: 1px;
      background: var(--text); transition: all 0.3s;
      transform-origin: center;
    }
    .nav-hamburger.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
    .nav-hamburger.open span:nth-child(2) { opacity: 0; }
    .nav-hamburger.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

    .nav-mobile-menu {
      position: fixed; top: 56px; left: 0; right: 0; bottom: 0;
      background: rgba(255,255,255,0.97);
      backdrop-filter: blur(16px);
      display: flex; flex-direction: column;
      align-items: center; justify-content: center; gap: 36px;
      z-index: 99;
      opacity: 0; pointer-events: none;
      transition: opacity 0.3s;
    }
    .nav-mobile-menu.open { opacity: 1; pointer-events: all; }
    .nav-mobile-menu a {
      font-family: 'Noto Serif JP', serif;
      font-size: 20px; font-weight: 400;
      letter-spacing: 0.15em; color: var(--text);
      text-decoration: none;
    }
    .nav-mobile-menu .nav-cta {
      background: var(--text); color: var(--white) !important;
      padding: 14px 36px; font-size: 13px;
    }

    /* HERO */
    #hero {
      padding: 90px 20px 60px;
      min-height: 100svh;
    }
    .hero-title { font-size: clamp(32px, 9vw, 48px); }
    .hero-subtitle { font-size: 13px; line-height: 2.1; }
    .hero-ctas { flex-direction: column; gap: 12px; }
    .btn-primary, .btn-outline { width: 100%; text-align: center; justify-content: center; padding: 16px 20px; }
    .hero-scroll-hint { display: none; }

    /* SECTIONS */
    section { padding: 72px 20px; }
    .inner { padding: 0; }

    .section-title { font-size: clamp(24px, 7vw, 36px); }

    /* ABOUT */
    .about-grid { grid-template-columns: 1fr; gap: 36px; }
    .about-visual { display: none; }
    .about-cards { grid-template-columns: 1fr; }
    .about-lead { font-size: 16px; }

    /* SERVICES */
    .services-header { flex-direction: column; align-items: flex-start; gap: 24px; }
    .services-grid { grid-template-columns: 1fr; }
    .service-card:nth-child(4),
    .service-card:nth-child(5) { grid-column: span 1; }

    /* FLOW */
    .flow-steps { grid-template-columns: 1fr; gap: 1px; }
    .flow-step::after { display: none; }
    .flow-num { font-size: 36px; margin-bottom: 12px; }

    /* WORKS */
    .works-stats { grid-template-columns: repeat(2, 1fr); }
    .stat-card { padding: 28px 16px; }
    .works-grid { grid-template-columns: 1fr; }
    .work-card:first-child { grid-column: span 1; }

    /* FAQ */
    .faq-layout { grid-template-columns: 1fr; gap: 40px; }
    .faq-sticky { position: static; }
    .faq-sticky .btn-outline { display: none; }

    /* BLOG */
    .blog-header { flex-direction: column; align-items: flex-start; gap: 20px; }
    .blog-grid { grid-template-columns: 1fr; }

    /* PHILOSOPHY */
    #philosophy { padding: 80px 20px; }
    .philosophy-quote { font-size: clamp(17px, 5vw, 22px); }

    /* CONTACT */
    #contact { padding: 80px 20px; }
    .contact-ctas { flex-direction: column; gap: 12px; }

    /* FOOTER */
    footer { padding: 56px 20px 32px; }
    .footer-inner { grid-template-columns: 1fr; gap: 36px; }
    .footer-bottom {
      flex-direction: column; gap: 12px;
      text-align: center; font-size: 10px;
    }
  }