:root {
      --gold: #C9A84C; --gold-light: #E8C96A; --gold-dark: #9A7A2E;
      --navy: #0D1B2A; --navy-mid: #1A2F45;
      --white: #FFFFFF; --off-white: #F5F3EF; --light-gray: #E8E6E2;
      --text-dark: #1A1A1A; --text-mid: #4A4A4A; --text-light: #7A7A7A;
      --error: #C0392B;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body { font-family: "Noto Sans JP", sans-serif; background: var(--white); color: var(--text-dark); overflow-x: hidden; }

    /* HEADER */
    header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: #ffffff; border-bottom: 1px solid rgba(0,0,0,0.08); }
    .header-inner { max-width: 1200px; margin: 0 auto; padding: 0 40px; height: 100px; display: flex; align-items: center; justify-content: space-between; }
    .logo { display: flex; align-items: center; text-decoration: none; }
    .logo img { height: 70px; width: auto; }
    nav { display: flex; align-items: center; gap: 36px; }
    nav a { color: var(--text-mid); text-decoration: none; font-size: 15px; font-weight: 500; letter-spacing: 0.05em; transition: color 0.2s; }
    nav a:hover { color: var(--navy); }
    nav a.active { color: var(--navy); font-weight: 700; border-bottom: 2px solid var(--gold); padding-bottom: 2px; }
    .nav-contact { display: flex !important; align-items: center; background: var(--gold) !important; color: var(--navy) !important; padding: 0 32px !important; height: 100px; font-size: 15px !important; font-weight: 700 !important; letter-spacing: 0.05em; transition: background 0.2s !important; margin-right: -40px; }
    .nav-contact:hover { background: var(--gold-light) !important; color: var(--navy) !important; border-bottom: none !important; }
    .burger { display: none; flex-direction: column; justify-content: center; gap: 6px; width: 40px; height: 40px; cursor: pointer; background: none; border: none; padding: 4px; z-index: 1100; }
    .burger span { display: block; width: 26px; height: 2px; background: var(--navy); transition: all 0.3s ease; transform-origin: center; }
    .burger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
    .burger.open span:nth-child(2) { opacity: 0; }
    .burger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
    .nav-drawer { display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.4); z-index: 999; opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
    .nav-drawer.open { display: block; opacity: 1;  pointer-events: auto; }
    .nav-drawer-inner { position: absolute; top: 0; right: 0; width: 280px; height: 100%; background: #fff; padding: 120px 36px 40px; display: flex; flex-direction: column; transform: translateX(100%); transition: transform 0.35s ease; box-shadow: -4px 0 24px rgba(0,0,0,0.12); }
    .nav-drawer.open .nav-drawer-inner { transform: translateX(0); }
    .nav-drawer-inner a { display: block; font-size: 16px; font-weight: 500; color: var(--text-dark); text-decoration: none; padding: 16px 0; border-bottom: 1px solid var(--light-gray); letter-spacing: 0.05em; transition: color 0.2s; }
    .nav-drawer-inner a:hover { color: var(--gold-dark); }
    .nav-drawer-contact { margin-top: 24px !important; background: var(--gold) !important; color: var(--navy) !important; text-align: center; padding: 16px !important; font-weight: 700 !important; border-bottom: none !important; }

    /* PAGE HERO */
    .page-hero { position: relative; height: 360px; background: var(--navy); display: flex; align-items: flex-end; overflow: hidden; margin-top: 100px; }
    .page-hero-bg { position: absolute; inset: 0; background: linear-gradient(to right, rgba(13,27,42,0.85) 50%, rgba(13,27,42,0.4) 100%), url('../img/4122.JPG') 40% 45%/130% auto no-repeat; }
    .page-hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(201,168,76,0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(201,168,76,0.04) 1px, transparent 1px); background-size: 60px 60px; }
    .page-hero-content { position: relative; z-index: 2; max-width: 1200px; margin: 0 auto; padding: 0 40px 120px; width: 100%; }
    .page-label { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 16px; }
    .page-label::before { content: ""; display: block; width: 40px; height: 1px; background: var(--gold); }
    .page-label span { font-family: "Oswald", sans-serif; font-size: 12px; letter-spacing: 0.25em; color: var(--gold); text-transform: uppercase; }
    .page-title { font-family: "Noto Serif JP", serif; font-size: clamp(32px, 4vw, 52px); font-weight: 700; color: var(--white); line-height: 1.3; }

    /* BREADCRUMB */
    .breadcrumb { background: var(--off-white); border-bottom: 1px solid var(--light-gray); padding: 14px 0; }
    .breadcrumb-inner { max-width: 1200px; margin: 0 auto; padding: 0 40px; display: flex; align-items: center; gap: 8px; }
    .breadcrumb a { font-size: 13px; color: var(--text-light); text-decoration: none; transition: color 0.2s;  padding: 8px 4px; }

    .breadcrumb a:hover { color: var(--gold-dark); }
    .breadcrumb span { font-size: 13px; color: var(--text-light); }
    .breadcrumb-current { font-size: 13px; color: var(--text-dark); }

    /* CONTENT */
    .content { padding: 100px 0 120px; }
    .content-inner { max-width: 1200px; margin: 0 auto; padding: 0 40px; display: grid; grid-template-columns: 1fr 480px; gap: 80px; align-items: start; }

    /* LEFT INFO */
    .contact-info { }
    .section-label { display: inline-flex; align-items: center; gap: 12px; margin-bottom: 16px; }
    .section-label::before { content: ""; display: block; width: 32px; height: 1px; background: var(--gold); }
    .section-label span { font-family: "Oswald", sans-serif; font-size: 11px; letter-spacing: 0.3em; color: var(--gold); text-transform: uppercase; }
    .section-title { font-family: "Noto Serif JP", serif; font-size: clamp(26px, 3vw, 36px); font-weight: 700; color: var(--navy); line-height: 1.3; margin-bottom: 24px; }
    .contact-lead { font-size: 16px; line-height: 2.2; color: var(--text-mid); margin-bottom: 48px; }
    .contact-details { display: flex; flex-direction: column; gap: 24px; }
    .contact-detail-item { display: flex; gap: 20px; align-items: flex-start; }
    .contact-detail-icon { width: 44px; height: 44px; background: var(--off-white); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
    .contact-detail-icon svg { width: 20px; height: 20px; stroke: var(--gold); fill: none; stroke-width: 1.5; }
    .contact-detail-label { font-family: "Oswald", sans-serif; font-size: 11px; letter-spacing: 0.2em; color: var(--text-light); text-transform: uppercase; margin-bottom: 4px; }
    .contact-detail-value { font-size: 16px; color: var(--text-dark); font-weight: 500; }
    .contact-detail-note { font-size: 13px; color: var(--text-light); margin-top: 2px; }

    /* FORM */
    .contact-form-wrap { background: var(--off-white); padding: 52px 48px; }
    .form-title { font-family: "Noto Serif JP", serif; font-size: 20px; font-weight: 700; color: var(--navy); margin-bottom: 36px; padding-bottom: 16px; border-bottom: 1px solid var(--light-gray); }
    .form-group { margin-bottom: 28px; }
    .form-label { display: flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; color: var(--text-dark); margin-bottom: 8px; letter-spacing: 0.03em; }
    .form-required { font-size: 11px; background: var(--navy); color: var(--white); padding: 2px 7px; letter-spacing: 0.05em; }
    .form-optional { font-size: 11px; background: var(--light-gray); color: var(--text-mid); padding: 2px 7px; letter-spacing: 0.05em; }
    .form-input { width: 100%; padding: 14px 16px; font-size: 15px; font-family: "Noto Sans JP", sans-serif; border: 1px solid var(--light-gray); background: var(--white); color: var(--text-dark); outline: none; transition: border-color 0.2s, box-shadow 0.2s; -webkit-appearance: none; }
    .form-input:focus { border-color: var(--navy); box-shadow: 0 0 0 3px rgba(13,27,42,0.08); }
    .form-input::placeholder { color: var(--text-light); }
    textarea.form-input { resize: vertical; min-height: 140px; line-height: 1.8; }
    select.form-input { cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%234A4A4A' stroke-width='1.5' fill='none'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; }
    .form-privacy { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 32px; font-size: 13px; color: var(--text-mid); line-height: 1.8; }
    .form-privacy input[type="checkbox"] { width: 18px; height: 18px; margin-top: 2px; flex-shrink: 0; accent-color: var(--navy); cursor: pointer; }
    .form-privacy a { color: var(--navy); text-decoration: underline; }
    .btn-submit { width: 100%; padding: 18px; background: var(--navy); color: var(--white); font-size: 16px; font-weight: 700; letter-spacing: 0.1em; font-family: "Noto Sans JP", sans-serif; border: none; cursor: pointer; transition: all 0.3s ease; display: flex; align-items: center; justify-content: center; gap: 10px; border-radius: 6px; }
    .btn-submit::after { content: "→"; transition: transform 0.3s ease; }
    .btn-submit:hover { background: var(--navy-mid); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(13,27,42,0.2); }
    .btn-submit:hover::after { transform: translateX(4px); }

    /* FOOTER */
    footer { background: #ffffff; padding: 60px 0 32px; border-top: 1px solid rgba(0,0,0,0.08); }
    .footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
    .footer-top { display: flex; flex-direction: column; gap: 32px; margin-bottom: 32px; padding-bottom: 32px; border-bottom: 1px solid rgba(0,0,0,0.08); }
    .footer-brand img { height: 56px; margin-bottom: 12px; }
    .footer-brand p { font-size: 14px; line-height: 1.5; color: var(--text-mid); max-width: 400px; }
    .footer-nav-group { display: flex; flex-direction: row; flex-wrap: wrap; gap: 0 32px; align-items: center; }
    .footer-nav-group h4 { display: none; }
    .footer-nav-group a { display: inline-block; font-size: 14px; color: var(--text-mid); text-decoration: none; padding: 8px 0; transition: color 0.2s; white-space: nowrap; }
    .footer-nav-group a:hover { color: var(--gold-dark); }
    .footer-bottom { display: flex; justify-content: space-between; align-items: center; }
    .footer-bottom p { font-size: 11px; color: var(--text-light); letter-spacing: 0.1em; }
    .footer-bottom-links { display: flex; gap: 24px; }
    .footer-bottom-links a { font-size: 11px; color: var(--text-light); text-decoration: none; transition: color 0.2s; }
    .footer-bottom-links a:hover { color: var(--gold-dark); }

    /* REVEAL */
    .reveal { opacity: 0; transform: translateY(32px); transition: opacity 0.7s ease, transform 0.7s ease; }
    .reveal.visible { opacity: 1; transform: translateY(0); }

    /* RESPONSIVE */
    @media (max-width: 1024px) {
      .content-inner { grid-template-columns: 1fr; gap: 60px; }
      .contact-form-wrap { padding: 40px 40px; }
    }
    @media (max-width: 768px) {
      .page-hero-bg { background-size: auto, cover; }
      .header-inner { padding: 0 20px; height: 70px; }
      nav { display: none; }
      .burger { display: flex; }
      .page-hero { height: 280px; margin-top: 70px; }
      .page-hero-content { padding: 0 40px 120px; } .breadcrumb-inner, .content-inner, .footer-inner { padding: 0 24px; }
      .contact-form-wrap { padding: 32px 28px; }
      .nav-contact { height: 70px !important; }
    }
    @media (max-width: 480px) {
      .header-inner { height: 64px; padding: 0 16px; }
      .logo img { height: 52px; }
      .nav-contact { height: 64px !important; padding: 0 20px !important; font-size: 13px !important; }
      .page-hero { height: 240px; margin-top: 64px; }
      .page-hero-content { padding: 0 40px 120px; } .breadcrumb-inner, .content-inner, .footer-inner { padding: 0 16px; }
      .contact-form-wrap { padding: 28px 20px; }
      .footer-nav-group { display: none; }
      .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    }
  
    /* FORM ERROR / VALIDATION */
    .form-error { font-size: 13px; color: var(--error); margin-top: 6px; }
    .form-input.has-error { border-color: var(--error); background: #fff5f5; }
    .form-alert {
      padding: 16px 20px; border-radius: 4px; margin-bottom: 28px;
      font-size: 14px; line-height: 1.7;
    }
    .form-alert-error {
      background: #fff5f5; border: 1px solid rgba(192,57,43,0.3); color: var(--error);
    }
    .form-alert-error strong { display: block; margin-bottom: 4px; font-size: 15px; }