:root {
    --warm-beige: #FDF9F4;
    --sage-green: #6D7B6B;
    --sage-green-dark: #566159;
    --dusty-rose: #EAD8D3;
    --dusty-rose-dark: #d4b8b0;
    --text-primary: #3a3530;
    --text-secondary: #7a7370;
    --text-light: #b0ada9;
    --white: #ffffff;
    --border-light: rgba(109, 123, 107, 0.15);
    --shadow-soft: 0 8px 40px rgba(58, 53, 48, 0.08);
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Noto Sans JP', sans-serif;
    --easing: cubic-bezier(0.4, 0, 0.2, 1);
    --easing-out: cubic-bezier(0, 0, 0.2, 1);
  }

  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    font-family: var(--font-sans);
    background: var(--warm-beige);
    color: var(--text-primary);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }
  a { text-decoration: none; color: inherit; }

  /* =====================
     HEADER
  ===================== */
  .site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    background: rgba(253, 249, 244, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    transition: box-shadow 0.4s var(--easing);
  }
  .site-header.scrolled { box-shadow: 0 2px 24px rgba(58,53,48,0.06); }

  .header-inner {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 32px;
    height: 108px;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
  }

  .header-nav { display: flex; align-items: center; gap: 32px; }
  .header-nav--left { justify-content: flex-start; }
  .header-nav--right { justify-content: flex-end; }

  .header-nav a {
    font-family: var(--font-sans);
    font-size: 11.5px;
    font-weight: 400;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    position: relative;
    padding-bottom: 2px;
    transition: color 0.3s;
  }
  .header-nav a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 1px;
    background: var(--sage-green);
    transition: width 0.35s var(--easing);
  }
  .header-nav a:hover { color: #c9a09a; }
  .header-nav a:hover::after { width: 100%; }
  .header-nav a.active { color: var(--sage-green); }
  .header-nav a.active::after { width: 100%; }

  .header-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 0.4s var(--easing);
  }
  .header-logo:hover { transform: scale(1.03); }

  .hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
  }
  .hamburger span { display: block; width: 22px; height: 1px; background: var(--text-primary); }

  /* =====================
     PAGE HERO
  ===================== */
  .page-hero {
    margin-top: 108px;
    padding: clamp(48px, 7vw, 96px) clamp(20px, 5vw, 80px) clamp(32px, 4vw, 56px);
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    margin-top: 108px;
    border-bottom: 1px solid var(--border-light);
  }

  .page-eyebrow {
    font-family: var(--font-serif);
    font-size: 11px;
    font-style: italic;
    letter-spacing: 0.24em;
    color: var(--sage-green);
    display: block;
    margin-bottom: 10px;
  }

  .page-title {
    font-family: var(--font-serif);
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 400;
    color: var(--text-primary);
    letter-spacing: 0.02em;
    line-height: 1.2;
    margin-bottom: 12px;
  }

  .page-desc {
    font-family: var(--font-sans);
    font-size: 12.5px;
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 0.08em;
    line-height: 1.9;
    max-width: 720px;
  }

  /* =====================
     MAIN LAYOUT
  ===================== */
  .contact-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: clamp(48px, 6vw, 80px) clamp(20px, 5vw, 80px);
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: clamp(48px, 6vw, 96px);
    align-items: start;
  }

  /* =====================
     FORM
  ===================== */
  .contact-form-wrap {}

  .form-section-title {
    font-family: var(--font-serif);
    font-size: 10px;
    font-style: italic;
    letter-spacing: 0.22em;
    color: var(--sage-green);
    display: block;
    margin-bottom: 32px;
  }

  .form-group {
    margin-bottom: 28px;
  }

  .form-label {
    font-family: var(--font-sans);
    font-size: 11.5px;
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
  }

  .form-required {
    font-family: var(--font-sans);
    font-size: 9px;
    letter-spacing: 0.1em;
    color: var(--white);
    background: var(--sage-green);
    padding: 2px 7px;
    font-weight: 400;
  }

  .form-optional {
    font-family: var(--font-sans);
    font-size: 9px;
    letter-spacing: 0.1em;
    color: var(--text-light);
    background: rgba(176,173,169,0.15);
    padding: 2px 7px;
    font-weight: 300;
  }

  .form-input,
  .form-select,
  .form-textarea {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 300;
    color: var(--text-primary);
    background: var(--white);
    border: 1px solid rgba(212,168,160,0.3);
    padding: 14px 16px;
    outline: none;
    appearance: none;
    letter-spacing: 0.04em;
    transition: border-color 0.3s var(--easing), box-shadow 0.3s var(--easing);
    border-radius: 0;
  }

  .form-input:focus,
  .form-select:focus,
  .form-textarea:focus {
    border-color: var(--dusty-rose-dark);
    box-shadow: 0 4px 20px rgba(212,168,160,0.15);
  }

  .form-input::placeholder,
  .form-textarea::placeholder {
    color: var(--text-light);
    font-weight: 300;
  }

  .form-select-wrap {
    position: relative;
  }

  .form-select-wrap::after {
    content: '';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-right: 1px solid var(--text-light);
    border-bottom: 1px solid var(--text-light);
    transform: translateY(-65%) rotate(45deg);
    pointer-events: none;
  }

  .form-textarea {
    resize: vertical;
    min-height: 160px;
    line-height: 1.8;
  }

  .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  /* 種別ラジオ */
  .radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .radio-item {
    display: flex;
    align-items: center;
    gap: 0;
  }

  .radio-item input[type="radio"] {
    display: none;
  }

  .radio-label {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 300;
    letter-spacing: 0.08em;
    color: var(--text-secondary);
    padding: 9px 18px;
    border: 1px solid rgba(212,168,160,0.3);
    background: var(--white);
    cursor: pointer;
    transition: all 0.25s var(--easing);
    white-space: nowrap;
  }

  .radio-item input[type="radio"]:checked + .radio-label {
    background: #EED9D4;
    border-color: var(--dusty-rose-dark);
    color: var(--text-primary);
    font-weight: 400;
  }

  .radio-label:hover {
    background: #F7EEEB;
    border-color: rgba(212,168,160,0.5);
  }

  /* Privacy check */
  .privacy-wrap {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 20px;
    background: var(--white);
    border: 1px solid var(--border-light);
    margin-bottom: 28px;
  }

  .privacy-check {
    appearance: none;
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    border: 1px solid rgba(212,168,160,0.5);
    background: var(--white);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    margin-top: 2px;
    transition: all 0.25s;
  }

  .privacy-check:checked {
    background: #EED9D4;
    border-color: var(--dusty-rose-dark);
  }

  .privacy-check:checked::after {
    content: '';
    position: absolute;
    top: 2px; left: 4px;
    width: 5px; height: 8px;
    border: 1.5px solid var(--text-primary);
    border-top: none;
    border-left: none;
    transform: rotate(45deg);
  }

  .privacy-text {
    font-family: var(--font-sans);
    font-size: 11.5px;
    font-weight: 300;
    color: var(--text-secondary);
    line-height: 1.8;
    letter-spacing: 0.04em;
  }

  .privacy-text a {
    color: var(--sage-green);
    border-bottom: 1px solid rgba(109,123,107,0.3);
    transition: border-color 0.3s;
  }

  .privacy-text a:hover { border-color: var(--sage-green); }

  /* Submit button */
  .form-submit {
    width: 100%;
    font-family: var(--font-sans);
    font-size: 12.5px;
    font-weight: 400;
    letter-spacing: 0.22em;
    color: var(--white);
    background: var(--sage-green);
    border: none;
    padding: 18px;
    cursor: pointer;
    transition: background 0.3s var(--easing);
  }

  .form-submit:hover { background: var(--sage-green-dark); }
  .form-submit:disabled {
    background: var(--text-light);
    cursor: not-allowed;
  }

  /* Success / Error messages */
  .form-message {
    display: none;
    padding: 20px 24px;
    margin-bottom: 24px;
    font-family: var(--font-sans);
    font-size: 12.5px;
    font-weight: 300;
    letter-spacing: 0.06em;
    line-height: 1.8;
  }

  .form-message--success {
    background: rgba(109,123,107,0.08);
    border-left: 3px solid var(--sage-green);
    color: var(--sage-green-dark);
  }

  .form-message--error {
    background: rgba(212,168,160,0.15);
    border-left: 3px solid var(--dusty-rose-dark);
    color: var(--text-primary);
  }

  /* =====================
     SIDEBAR INFO
  ===================== */
  .contact-sidebar {
    position: sticky;
    top: 128px;
  }

  .info-card {
    background: var(--white);
    padding: clamp(24px, 3vw, 36px);
    border: 1px solid var(--border-light);
    margin-bottom: 20px;
  }

  .info-card-title {
    font-family: var(--font-serif);
    font-size: 10px;
    font-style: italic;
    letter-spacing: 0.2em;
    color: var(--sage-green);
    display: block;
    margin-bottom: 20px;
  }

  .info-item {
    padding: 14px 0;
    border-bottom: 1px solid var(--border-light);
  }

  .info-item:last-child { border-bottom: none; }

  .info-item-label {
    font-family: var(--font-sans);
    font-size: 10px;
    letter-spacing: 0.15em;
    color: var(--text-light);
    margin-bottom: 4px;
    font-weight: 300;
  }

  .info-item-value {
    font-family: var(--font-sans);
    font-size: 12.5px;
    font-weight: 300;
    color: var(--text-primary);
    line-height: 1.7;
    letter-spacing: 0.04em;
  }

  /* Note card */
  .note-card {
    background: #F7EEEB;
    border: 1px solid rgba(212,168,160,0.25);
    padding: clamp(20px, 2.5vw, 28px);
  }

  .note-card-title {
    font-family: var(--font-serif);
    font-size: 10px;
    font-style: italic;
    letter-spacing: 0.2em;
    color: var(--dusty-rose-dark);
    display: block;
    margin-bottom: 14px;
  }

  .note-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .note-list li {
    font-family: var(--font-sans);
    font-size: 11.5px;
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 0.04em;
    line-height: 1.7;
    padding-left: 14px;
    position: relative;
  }

  .note-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: var(--dusty-rose-dark);
    font-size: 10px;
  }

  /* =====================
     MOBILE MENU
  ===================== */
  .mobile-menu {
    display: none;
    position: fixed;
    inset: 0;
    background: var(--warm-beige);
    z-index: 200;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    opacity: 0;
    transition: opacity 0.4s;
  }
  .mobile-menu.open { opacity: 1; }
  .mobile-menu a {
    font-family: var(--font-serif);
    font-size: 26px;
    font-weight: 400;
    font-style: italic;
    color: var(--text-primary);
    letter-spacing: 0.05em;
    transition: color 0.3s;
  }
  .mobile-menu a:hover { color: #c9a09a; }
  .mobile-menu-close {
    position: absolute;
    top: 24px; right: 28px;
    font-size: 24px;
    color: var(--text-secondary);
    cursor: pointer;
    font-weight: 300;
  }

  /* =====================
     FOOTER
  ===================== */
  .site-footer {
    background: var(--warm-beige);
    border-top: 1px solid var(--border-light);
    padding: clamp(48px, 6vw, 80px) clamp(20px, 5vw, 80px) clamp(24px, 3vw, 40px);
    margin-top: clamp(60px, 8vw, 100px);
  }

  .footer-inner { max-width: 1280px; margin: 0 auto; }

  .footer-top {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 40px;
    align-items: start;
    margin-bottom: clamp(40px, 5vw, 64px);
    padding-bottom: clamp(40px, 5vw, 64px);
    border-bottom: 1px solid var(--border-light);
  }

  .footer-tagline {
    font-family: var(--font-serif);
    font-size: clamp(16px, 2vw, 22px);
    font-weight: 400;
    font-style: italic;
    color: var(--text-primary);
    line-height: 1.5;
    margin-bottom: 10px;
  }

  .footer-tagline-sub {
    font-family: var(--font-sans);
    font-size: 11.5px;
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 0.12em;
  }

  .footer-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: right;
  }

  .footer-nav a {
    font-family: var(--font-sans);
    font-size: 11.5px;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    font-weight: 300;
    transition: color 0.3s;
  }
  .footer-nav a:hover { color: #c9a09a; }

  .footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .footer-copy {
    font-family: var(--font-sans);
    font-size: 10.5px;
    color: var(--text-light);
    letter-spacing: 0.1em;
    font-weight: 300;
  }

  .footer-social { display: flex; gap: 20px; }
  .footer-social a {
    font-family: var(--font-serif);
    font-size: 11px;
    font-style: italic;
    color: var(--text-light);
    letter-spacing: 0.08em;
    transition: color 0.3s;
  }
  .footer-social a:hover { color: #c9a09a; }

  /* =====================
     RESPONSIVE
  ===================== */
  @media (max-width: 900px) {
    .contact-main {
      grid-template-columns: 1fr;
    }
    .contact-sidebar {
      position: static;
    }
    .form-row {
      grid-template-columns: 1fr;
    }
  }

  @media (max-width: 768px) {
    .header-nav { display: none; }
    .hamburger { display: flex; }

    .header-inner {
      grid-template-columns: auto 1fr auto;
      padding: 0 20px;
      height: 68px;
    }
    .header-logo { justify-content: flex-start; }
    .header-logo svg { width: 91px; height: 72px; }
    .hamburger { justify-self: end; }

    .page-hero { margin-top: 68px; }

    .footer-top { grid-template-columns: 1fr; text-align: center; }
    .footer-top > div:first-child { display: flex; flex-direction: column; align-items: center; }
    .footer-nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px 8px; text-align: center; }
    .footer-bottom { flex-direction: column; gap: 16px; align-items: center; }
    .footer-social { justify-content: center; }
  }