*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
    :root { --black: #0a0a0a; --dark: #111111; --dark-gray: #1a1a1a; --medium-gray: #2a2a2a; --light-gray: #888888; --off-white: #e8e8e8; --white: #ffffff; --accent: #c8a45c; }
    body { font-family: 'Noto Sans JP', sans-serif; background: var(--black); color: var(--off-white); line-height: 1.8; }
    a { color: inherit; }

    /* Header (記事と同じ) */
    header { position: fixed; top: 0; left: 0; right: 0; z-index: 100; padding: 20px 60px; display: flex; align-items: center; justify-content: space-between; background: rgba(10,10,10,0.85); backdrop-filter: blur(20px); border-bottom: 1px solid rgba(255,255,255,0.05); }
    .logo { display: flex; align-items: center; text-decoration: none; }
    .logo img { height: 40px; }
    nav { display: flex; align-items: center; gap: 40px; }
    nav a { color: var(--light-gray); text-decoration: none; font-size: 13px; letter-spacing: 0.1em; transition: color 0.3s; }
    nav a:hover { color: var(--white); }
    .nav-contact { padding: 10px 28px; border: 1px solid rgba(255,255,255,0.2); font-size: 12px; letter-spacing: 0.15em; transition: all 0.3s; }
    .nav-contact:hover { background: var(--white); color: var(--black) !important; }
    .hamburger { display: none; flex-direction: column; gap: 5px; width: 28px; height: 28px; cursor: pointer; z-index: 200; }
    .hamburger span { display: block; width: 100%; height: 2px; background: var(--white); transition: all 0.3s; }
    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }
    .mobile-nav { position: fixed; inset: 0; background: rgba(10,10,10,0.95); backdrop-filter: blur(20px); display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 32px; z-index: 150; opacity: 0; pointer-events: none; transition: opacity 0.3s; }
    .mobile-nav.open { opacity: 1; pointer-events: auto; }
    .mobile-nav a { color: var(--off-white); text-decoration: none; font-size: 18px; letter-spacing: 0.15em; }

    /* Event Hero */
    .event-hero { padding: 140px 40px 60px; max-width: 880px; margin: 0 auto; }
    .event-tag { display: inline-block; font-size: 10px; letter-spacing: 0.2em; padding: 5px 14px; border: 1px solid var(--accent); color: var(--accent); margin-bottom: 24px; }
    .event-hero h1 { font-size: clamp(26px, 4vw, 40px); font-weight: 500; color: var(--white); line-height: 1.4; margin-bottom: 16px; letter-spacing: 0.02em; }
    .event-subtitle { font-size: 16px; color: var(--light-gray); font-weight: 300; line-height: 1.8; }
    .event-host { font-size: 12px; color: var(--light-gray); letter-spacing: 0.1em; margin-top: 24px; }
    .event-host strong { color: var(--accent); font-weight: 500; }

    /* Event Details */
    .event-details { max-width: 880px; margin: 0 auto; padding: 0 40px 60px; }
    .event-info-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-bottom: 60px; }
    .event-info-card { padding: 24px 28px; background: rgba(255,255,255,0.03); border: 1px solid var(--medium-gray); }
    .event-info-label { font-size: 10px; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 8px; }
    .event-info-value { font-size: 16px; color: var(--white); font-weight: 500; line-height: 1.6; }
    .event-info-value small { display: block; font-size: 12px; color: var(--light-gray); font-weight: 300; margin-top: 4px; }

    /* Pricing */
    .event-pricing { background: linear-gradient(135deg, rgba(200,164,92,0.08) 0%, rgba(200,164,92,0.02) 100%); border: 1px solid rgba(200,164,92,0.25); padding: 40px; margin-bottom: 60px; }
    .event-pricing-title { font-size: 12px; letter-spacing: 0.2em; color: var(--accent); margin-bottom: 24px; }
    .pricing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
    .pricing-item { padding: 24px; background: var(--dark); border: 1px solid var(--medium-gray); }
    .pricing-label { font-size: 11px; color: var(--light-gray); letter-spacing: 0.1em; margin-bottom: 8px; }
    .pricing-price { font-family: 'Playfair Display', serif; font-size: 32px; color: var(--white); margin-bottom: 4px; }
    .pricing-price small { font-size: 14px; color: var(--light-gray); }
    .pricing-note { font-size: 11px; color: var(--light-gray); }

    /* Section Heading */
    .event-section { margin-bottom: 60px; }
    .event-section h2 { font-size: 22px; color: var(--white); margin-bottom: 20px; padding-bottom: 12px; border-bottom: 1px solid var(--medium-gray); letter-spacing: 0.03em; }
    .event-section h3 { font-size: 16px; color: var(--accent); margin: 24px 0 12px; }
    .event-section p { font-size: 15px; color: var(--off-white); line-height: 2; font-weight: 300; margin-bottom: 16px; }
    .event-section ul { padding-left: 22px; margin-bottom: 16px; }
    .event-section li { font-size: 14px; color: var(--off-white); line-height: 2; margin-bottom: 4px; }

    /* Form */
    .event-form-section { background: var(--dark); border: 1px solid var(--medium-gray); padding: 40px; margin-bottom: 80px; }
    .event-form-title { font-size: 20px; color: var(--white); margin-bottom: 8px; letter-spacing: 0.03em; }
    .event-form-desc { font-size: 13px; color: var(--light-gray); margin-bottom: 28px; line-height: 1.8; }
    .form-group { margin-bottom: 20px; }
    .form-group label { display: block; font-size: 12px; color: var(--off-white); margin-bottom: 8px; letter-spacing: 0.05em; }
    .form-group label .required { color: var(--accent); margin-left: 4px; }
    .form-group input, .form-group select, .form-group textarea {
      width: 100%; padding: 12px 16px; background: var(--black); border: 1px solid var(--medium-gray);
      color: var(--off-white); font-size: 14px; font-family: 'Noto Sans JP', sans-serif; transition: border-color 0.3s;
    }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); }
    .form-group textarea { height: 90px; resize: vertical; }
    .form-submit { width: 100%; padding: 16px; background: var(--accent); color: var(--black); border: none; font-size: 13px; font-weight: 500; letter-spacing: 0.2em; cursor: pointer; transition: background 0.3s; font-family: 'Noto Sans JP', sans-serif; margin-top: 12px; }
    .form-submit:hover { background: var(--white); }
    .form-submit:disabled { background: var(--medium-gray); color: var(--light-gray); cursor: not-allowed; }
    .form-paypal-note { text-align: center; margin-top: 12px; font-size: 11px; color: var(--light-gray); }
    .form-recaptcha-note { font-size: 10px; color: var(--light-gray); margin-top: 12px; line-height: 1.6; text-align: center; }
    .form-recaptcha-note a { color: var(--light-gray); }

    /* Success */
    .form-success { text-align: center; padding: 40px 20px; }
    .form-success-icon { font-size: 48px; margin-bottom: 16px; display: block; color: var(--accent); }
    .form-success h3 { font-size: 18px; color: var(--white); margin-bottom: 12px; }
    .form-success p { font-size: 13px; color: var(--light-gray); line-height: 1.8; }

    /* Back link */
    .event-back { display: inline-block; margin-top: 0; padding: 12px 32px; border: 1px solid var(--accent); color: var(--accent); text-decoration: none; font-size: 13px; letter-spacing: 0.1em; transition: all 0.3s; }
    .event-back:hover { background: var(--accent); color: var(--black); }

    /* Footer */
    footer { background: var(--black); border-top: 1px solid var(--medium-gray); padding: 60px; display: flex; justify-content: space-between; align-items: center; }
    .footer-logo img { height: 30px; opacity: 0.6; }
    .footer-copy { font-size: 11px; color: var(--light-gray); letter-spacing: 0.1em; }

    /* reCAPTCHA badge hide */
    .grecaptcha-badge { visibility: hidden; }

    /* Responsive */
    @media (max-width: 768px) {
      header { padding: 14px 16px; }
      nav { display: none; }
      .hamburger { display: flex; }
      .event-hero { padding: 120px 16px 40px; }
      .event-details { padding: 0 16px 40px; }
      .event-info-grid { grid-template-columns: 1fr; gap: 12px; }
      .event-info-card { padding: 18px 20px; }
      .event-pricing { padding: 24px 20px; }
      .pricing-grid { grid-template-columns: 1fr; gap: 16px; }
      .pricing-item { padding: 20px; }
      .event-form-section { padding: 28px 20px; }
      .event-section h2 { font-size: 18px; }
      footer { flex-direction: column; gap: 20px; padding: 40px 16px; }
    }