:root {
    --bg: #0f0f0f;
    --fg: #f5f2ed;
    --fg-dim: #c8c3bc;
    --fg-dimmer: #888480;
    --border: #2a2a2a;
    --serif: 'Cormorant Garamond', 'Noto Serif JP', serif;
    --sans: 'Outfit', sans-serif;
    --jp: 'Noto Serif JP', serif;
  }

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

  html {
    scroll-behavior: smooth;
  }

  body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--jp);
    font-weight: 300;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  /* ── Navigation ── */
  nav {
    position: static;
    padding: 28px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .nav-contact-fixed {
    position: fixed;
    top: 32px;
    right: 48px;
    z-index: 100;
  }

  .nav-logo {
    text-decoration: none;
    display: flex;
    align-items: center;
  }
  .nav-logo-img {
    height: 200px;
    width: auto;
    opacity: 0.92;
  }

  .nav-contact {
    font-family: var(--sans);
    font-weight: 200;
    font-size: 11px;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--fg-dim);
    text-decoration: none;
    transition: color 0.3s ease;
  }

  .nav-contact:hover {
    color: var(--fg);
  }

  /* ── Fade-in animation ── */
  .fade-in {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.9s ease, transform 0.9s ease;
  }

  .fade-in.visible {
    opacity: 1;
    transform: translateY(0);
  }

  .fade-in-delay-1 { transition-delay: 0.1s; }
  .fade-in-delay-2 { transition-delay: 0.2s; }
  .fade-in-delay-3 { transition-delay: 0.35s; }
  .fade-in-delay-4 { transition-delay: 0.5s; }

  /* ── Hero ── */
  #hero {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 0 48px;
    padding-bottom: 300px;
  }

  .hero-tagline {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(36px, 5.5vw, 76px);
    letter-spacing: 0.08em;
    line-height: 1.4;
    text-align: center;
    color: var(--fg);
  }

  .hero-sub {
    margin-top: 40px;
    font-family: var(--sans);
    font-weight: 200;
    font-size: 11px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--fg-dim);
    text-align: center;
  }

  .hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }

  .hero-scroll span {
    font-family: var(--sans);
    font-weight: 200;
    font-size: 9px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--fg-dimmer);
  }

  .scroll-line {
    width: 1px;
    height: 48px;
    background: linear-gradient(to bottom, var(--fg-dimmer), transparent);
    animation: scrollDown 2s ease-in-out infinite;
  }

  @keyframes scrollDown {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6) translateY(-8px); }
    50% { opacity: 1; transform: scaleY(1) translateY(0); }
  }

  /* ── Section base ── */
  section {
    padding: 128px 48px;
    max-width: 1100px;
    margin: 0 auto;
  }

  .section-label {
    font-family: var(--sans);
    font-weight: 200;
    font-size: 9.5px;
    letter-spacing: 0.45em;
    text-transform: uppercase;
    color: var(--fg-dimmer);
    margin-bottom: 56px;
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .section-label::after {
    content: '';
    display: block;
    width: 32px;
    height: 1px;
    background: var(--fg-dimmer);
  }

  /* ── What we do ── */
  #about {
    border-top: 1px solid var(--border);
  }

  .about-headline {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(28px, 3.5vw, 48px);
    line-height: 1.6;
    letter-spacing: 0.04em;
    color: var(--fg);
    margin-bottom: 56px;
    max-width: 680px;
  }

  .about-body {
    max-width: 560px;
  }

  .about-body p {
    font-family: var(--jp);
    font-weight: 300;
    font-size: 15px;
    line-height: 2.1;
    letter-spacing: 0.06em;
    color: #dedad4;
    margin-bottom: 28px;
  }

  .about-body p:last-child {
    margin-bottom: 0;
    color: var(--fg);
    font-weight: 400;
  }

  /* ── Service ── */
  #service {
    border-top: 1px solid var(--border);
  }

  .service-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
  }

  .service-item {
    padding: 48px 0;
    border-bottom: 1px solid var(--border);
    padding-right: 64px;
  }

  .service-item:nth-child(odd) {
    border-right: 1px solid var(--border);
    padding-right: 64px;
  }

  .service-item:nth-child(even) {
    padding-left: 64px;
    padding-right: 0;
  }

  .service-item:last-child,
  .service-item:nth-last-child(2) {
    border-bottom: none;
  }

  .service-title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 20px;
    letter-spacing: 0.06em;
    line-height: 1.5;
    color: var(--fg);
    margin-bottom: 16px;
  }

  .service-desc {
    font-family: var(--jp);
    font-weight: 300;
    font-size: 13px;
    line-height: 2.0;
    letter-spacing: 0.05em;
    color: var(--fg-dim);
  }

  .service-category + .service-category {
    margin-top: 96px;
    padding-top: 96px;
    border-top: 1px solid var(--border);
  }

  .service-category-header {
    display: flex;
    align-items: baseline;
    gap: 20px;
    margin-bottom: 40px;
  }

  .service-cat-num {
    font-family: var(--sans);
    font-weight: 200;
    font-size: 13px;
    letter-spacing: 0.3em;
    color: var(--fg-dimmer);
  }

  .service-cat-title {
    font-family: var(--serif);
    font-weight: 400;
    font-size: clamp(22px, 2.6vw, 30px);
    letter-spacing: 0.06em;
    color: var(--fg);
  }

  .service-matching-lead {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(18px, 2vw, 22px);
    line-height: 1.9;
    letter-spacing: 0.05em;
    color: var(--fg);
    margin-bottom: 28px;
    max-width: 640px;
  }

  .service-matching-desc {
    font-family: var(--jp);
    font-weight: 300;
    font-size: 14px;
    line-height: 2.1;
    letter-spacing: 0.05em;
    color: var(--fg-dim);
    max-width: 560px;
  }

  /* ── Profile ── */
  #profile {
    border-top: 1px solid var(--border);
  }

  .profile-inner {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 80px;
    align-items: start;
  }

  .profile-name-block {
    position: sticky;
    top: 120px;
  }

  .profile-name {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(28px, 3vw, 44px);
    letter-spacing: 0.08em;
    line-height: 1.4;
    color: var(--fg);
    margin-bottom: 12px;
  }

  .profile-title {
    font-family: var(--sans);
    font-weight: 200;
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--fg-dim);
  }

  .profile-bio {
    font-family: var(--jp);
    font-weight: 300;
    font-size: 14.5px;
    line-height: 2.2;
    letter-spacing: 0.06em;
    color: #d8d3cc;
  }

  .profile-bio strong {
    font-weight: 400;
    color: var(--fg);
  }

  /* ── Freelancers ── */
  #freelance {
    border-top: 1px solid var(--border);
    padding-top: 96px;
    padding-bottom: 96px;
  }

  .freelance-inner {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 48px;
  }

  .freelance-text h2 {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(26px, 3vw, 42px);
    letter-spacing: 0.06em;
    line-height: 1.5;
    color: var(--fg);
    margin-bottom: 24px;
  }

  .freelance-text p {
    font-family: var(--jp);
    font-weight: 300;
    font-size: 14px;
    line-height: 2.1;
    letter-spacing: 0.06em;
    color: var(--fg-dim);
    max-width: 480px;
  }

  .freelance-cta {
    flex-shrink: 0;
  }

  .btn-outline {
    display: inline-block;
    font-family: var(--sans);
    font-weight: 200;
    font-size: 11px;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: var(--fg);
    text-decoration: none;
    border: 1px solid var(--fg-dimmer);
    padding: 16px 36px;
    transition: border-color 0.3s ease, color 0.3s ease;
    white-space: nowrap;
  }

  .btn-outline:hover {
    border-color: var(--fg);
  }

  /* ── Contact ── */
  #contact {
    border-top: 1px solid var(--border);
    text-align: center;
    padding-top: 140px;
    padding-bottom: 140px;
  }

  .contact-headline {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(32px, 4.5vw, 64px);
    letter-spacing: 0.08em;
    line-height: 1.4;
    color: var(--fg);
    margin-bottom: 20px;
  }

  .contact-sub {
    font-family: var(--jp);
    font-weight: 300;
    font-size: 14px;
    line-height: 2.0;
    letter-spacing: 0.06em;
    color: var(--fg-dim);
    margin-bottom: 56px;
  }

  .btn-primary {
    display: inline-block;
    font-family: var(--sans);
    font-weight: 200;
    font-size: 11px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--bg);
    background: var(--fg);
    text-decoration: none;
    padding: 18px 52px;
    transition: opacity 0.3s ease;
  }

  .btn-primary:hover {
    opacity: 0.85;
  }

  /* ── Footer ── */
  footer {
    border-top: 1px solid var(--border);
    padding: 40px 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 100%;
  }

  .footer-copy {
    font-family: var(--sans);
    font-weight: 200;
    font-size: 10px;
    letter-spacing: 0.2em;
    color: var(--fg-dimmer);
  }

  .footer-links {
    display: flex;
    gap: 32px;
  }

  .footer-links a {
    font-family: var(--sans);
    font-weight: 200;
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--fg-dim);
    text-decoration: none;
    transition: color 0.3s ease;
  }

  .footer-links a:hover {
    color: var(--fg);
  }

  /* ── Divider full-width ── */
  .full-divider {
    width: 100%;
    height: 1px;
    background: var(--border);
  }

  /* ── Mobile ── */
  @media (max-width: 768px) {
    nav {
      padding: 24px 24px;
    }

    section {
      padding: 80px 24px;
    }

    #hero {
      padding: 0 24px;
      padding-bottom: 150px;
    }

    .hero-tagline {
      font-size: clamp(20px, 6.2vw, 30px);
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .service-grid {
      grid-template-columns: 1fr;
    }

    .service-item {
      padding: 40px 0 !important;
      border-right: none !important;
      padding-left: 0 !important;
      border-bottom: 1px solid var(--border) !important;
    }

    .service-item:last-child {
      border-bottom: none !important;
    }

    .service-category + .service-category {
      margin-top: 64px;
      padding-top: 64px;
    }

    .service-category-header {
      gap: 14px;
      margin-bottom: 32px;
    }

    .profile-inner {
      grid-template-columns: 1fr;
      gap: 40px;
    }

    .profile-name-block {
      position: static;
    }

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

    footer {
      flex-direction: column;
      gap: 16px;
      text-align: center;
      padding: 32px 24px;
    }

    .footer-links {
      flex-wrap: wrap;
      justify-content: center;
      gap: 20px;
    }

    #contact {
      padding-top: 100px;
      padding-bottom: 100px;
    }
  }

  /* ── Contact Form ── */
  .contact-form {
    max-width: 560px;
    margin: 0 auto;
    text-align: left;
  }

  .form-group {
    margin-bottom: 32px;
  }

  .contact-form label {
    display: block;
    font-family: var(--sans);
    font-weight: 200;
    font-size: 10px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--fg-dim);
    margin-bottom: 14px;
  }

  .contact-form .required {
    color: var(--fg-dimmer);
    margin-left: 4px;
  }

  .contact-form input,
  .contact-form textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border);
    padding: 10px 2px 12px;
    font-family: var(--jp);
    font-weight: 300;
    font-size: 14px;
    letter-spacing: 0.04em;
    color: var(--fg);
    transition: border-color 0.3s ease;
  }

  .contact-form textarea {
    resize: vertical;
    line-height: 1.9;
    min-height: 120px;
  }

  .contact-form input:focus,
  .contact-form textarea:focus {
    outline: none;
    border-color: var(--fg);
  }

  .contact-form input::placeholder,
  .contact-form textarea::placeholder {
    color: var(--fg-dimmer);
    font-weight: 300;
  }

  .contact-form button[type="submit"] {
    display: inline-block;
    border: none;
    cursor: pointer;
    margin-top: 16px;
  }

  .contact-form button[type="submit"]:disabled {
    opacity: 0.5;
    cursor: default;
  }

  .hp-field {
    position: absolute;
    left: -9999px;
    top: -9999px;
  }

  .form-status {
    max-width: 560px;
    margin: 40px auto 0;
    font-family: var(--jp);
    font-weight: 300;
    font-size: 14px;
    letter-spacing: 0.05em;
    line-height: 1.9;
    color: var(--fg);
  }

  .form-status.error {
    color: #c98f8f;
  }

  /* ── About追加スタイル ── */
  .profile-company-label {
    font-family: var(--sans);
    font-weight: 200;
    font-size: 9.5px;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--fg-dimmer);
    margin-bottom: 8px;
  }
  .profile-company {
    font-family: var(--serif);
    font-weight: 300;
    font-size: clamp(16px, 2vw, 26px);
    letter-spacing: 0.04em;
    line-height: 1.5;
    color: var(--fg);
    margin-bottom: 8px;
  }
  .profile-founded {
    font-family: var(--jp);
    font-weight: 300;
    font-size: 13px;
    color: var(--fg-dim);
    margin-bottom: 40px;
    letter-spacing: 0.06em;
  }
  .profile-role {
    font-family: var(--serif);
    font-weight: 400;
    font-size: 17px;
    letter-spacing: 0.06em;
    color: var(--fg);
    margin-bottom: 20px;
  }