/* ============================================================
       IPHOLIC — CONTACT FORM / DESIGN  (shared design system)
    ============================================================ */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    :root {
      --bg:#FFFFFF; --bg-soft:#F5F4F1; --text:#141414; --text-mid:#6E6E6E; --text-soft:#9B9B9B; --line:#E7E6E2;
      --error:#C0392B; --ease: cubic-bezier(0.16, 1, 0.3, 1);
    }
    html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
    body { font-family: "Noto Sans JP", sans-serif; background: var(--bg); color: var(--text); letter-spacing: 0.04em; line-height: 1.8; overflow-x: hidden; }
    img { display: block; max-width: 100%; }
    a { color: inherit; text-decoration: none; }
    .en { font-family: "Noto Sans JP", sans-serif; font-weight: 300; letter-spacing: 0.32em; }
    .reveal { opacity: 0; transform: translateY(28px); transition: opacity 1.1s var(--ease), transform 1.1s var(--ease); }
    .reveal.is-visible { opacity: 1; transform: none; }

    /* ===== HEADER ===== */
    .header { position: fixed; top: 0; left: 0; width: 100%; height: 76px; padding: 0 clamp(20px, 5vw, 56px); display: flex; align-items: center; justify-content: space-between; z-index: 100; background: rgba(255,255,255,0); transition: background 0.5s var(--ease), height 0.5s var(--ease), border-color 0.5s var(--ease); border-bottom: 1px solid transparent; }
    .header.is-scrolled { height: 64px; background: rgba(255,255,255,0.82); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid var(--line); }
    .header__logo img { height: 54px; width: auto; transition: height 0.5s var(--ease); }
    .header.is-scrolled .header__logo img { height: 46px; }
    .header__nav { display: flex; align-items: center; gap: clamp(20px, 2.4vw, 40px); }
    .header__nav a { position: relative; font-size: 12.5px; font-weight: 500; letter-spacing: 0.1em; padding: 4px 0; }
    .header__nav a.is-current { color: var(--text-soft); }
    .header__nav a:not(.nav-contact):not(.is-current)::after { content: ''; position: absolute; left: 0; bottom: 0; width: 100%; height: 1px; background: var(--text); transform: scaleX(0); transform-origin: right; transition: transform 0.5s var(--ease); }
    .header__nav a:not(.nav-contact):not(.is-current):hover::after { transform: scaleX(1); transform-origin: left; }
    .nav-contact { border: 1px solid var(--text); border-radius: 999px; padding: 9px 24px !important; font-size: 11.5px !important; letter-spacing: 0.16em !important; transition: background 0.45s var(--ease), color 0.45s var(--ease); }
    .nav-contact.is-current { background: var(--text); color: #fff; }
    .header__burger { display: none; width: 28px; height: 16px; position: relative; cursor: pointer; }
    .header__burger span { position: absolute; left: 0; width: 100%; height: 1.5px; background: var(--text); transition: transform 0.45s var(--ease), opacity 0.3s var(--ease); }
    .header__burger span:nth-child(1) { top: 0; } .header__burger span:nth-child(2) { top: 7px; } .header__burger span:nth-child(3) { top: 14px; }
    .drawer { position: fixed; inset: 0; background: var(--bg); z-index: 90; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 8px; opacity: 0; visibility: hidden; transition: opacity 0.5s var(--ease), visibility 0.5s var(--ease); }
    .drawer.is-open { opacity: 1; visibility: visible; }
    .drawer a { font-size: 16px; font-weight: 500; letter-spacing: 0.14em; padding: 16px 0; opacity: 0; transform: translateY(14px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
    .drawer a .sub { display: block; font-size: 10px; letter-spacing: 0.3em; color: var(--text-soft); margin-top: 4px; }
    .drawer.is-open a { opacity: 1; transform: none; }
    .drawer.is-open a:nth-child(1){transition-delay:.12s} .drawer.is-open a:nth-child(2){transition-delay:.18s} .drawer.is-open a:nth-child(3){transition-delay:.24s} .drawer.is-open a:nth-child(4){transition-delay:.30s} .drawer.is-open a:nth-child(5){transition-delay:.36s}
    body.menu-open .header__burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    body.menu-open .header__burger span:nth-child(2) { opacity: 0; }
    body.menu-open .header__burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    /* ===== PAGE HERO ===== */
    .page-hero { position: relative; min-height: 46vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 140px 5% 64px; overflow: hidden; }
    .page-hero::before { content: ''; position: absolute; inset: -10%; background: radial-gradient(42% 52% at 26% 34%, rgba(0,0,0,0.045) 0%, transparent 62%), radial-gradient(40% 48% at 76% 72%, rgba(0,0,0,0.03) 0%, transparent 60%); animation: heroDrift 18s ease-in-out infinite alternate; z-index: 0; }
    @keyframes heroDrift { 0% { transform: scale(1) translate(0,0); } 100% { transform: scale(1.12) translate(2.5%, -1.5%); } }
    .page-hero__inner { position: relative; z-index: 2; }
    .page-hero__label { display: inline-flex; align-items: center; gap: 14px; font-size: 11px; letter-spacing: 0.38em; color: var(--text-soft); margin-bottom: clamp(18px, 2.6vh, 28px); opacity: 0; animation: fadeUp 1s 0.3s var(--ease) forwards; }
    .page-hero__label::before, .page-hero__label::after { content: ''; width: 28px; height: 1px; background: var(--line); }
    .page-hero__title { font-family: "Noto Serif JP", serif; font-weight: 400; font-size: clamp(2.4rem, 6vw, 4.6rem); line-height: 1.24; letter-spacing: 0.08em; }
    .page-hero__title .line { display: block; overflow: hidden; padding: 0.04em 0; }
    .page-hero__title .line > span { display: inline-block; transform: translateY(112%); animation: lineUp 1.15s 0.5s var(--ease) forwards; }
    @keyframes lineUp { to { transform: none; } }
    @keyframes fadeUp { to { opacity: 1; transform: none; } }

    /* ===== FORM ===== */
    .form-wrap { max-width: 720px; margin: 0 auto; padding: clamp(48px, 7vh, 80px) clamp(20px, 5vw, 56px) clamp(40px, 6vh, 72px); }
    .form-intro { margin-bottom: clamp(40px, 6vh, 56px); }
    .form-intro__title { font-family: "Noto Serif JP", serif; font-size: clamp(1.2rem, 1.8vw, 1.5rem); font-weight: 400; letter-spacing: 0.06em; margin-bottom: 16px; }
    .form-intro__text { font-size: 0.9rem; font-weight: 300; line-height: 2.1; color: var(--text-mid); }

    .form-block-label { font-size: 11px; font-weight: 500; letter-spacing: 0.22em; color: var(--text-soft); margin-bottom: 24px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
    .form-group { margin-bottom: 26px; }
    .form-group > label { display: flex; align-items: center; gap: 10px; font-size: 0.86rem; font-weight: 500; margin-bottom: 10px; letter-spacing: 0.04em; }
    .required { font-size: 9.5px; font-weight: 600; color: #fff; background: var(--error); padding: 3px 8px; border-radius: 999px; letter-spacing: 0.06em; }
    .form-group input, .form-group select, .form-group textarea {
      width: 100%; border: 1px solid var(--line); background: #fff; padding: 14px 16px;
      font-size: 0.9rem; font-family: "Noto Sans JP", sans-serif; color: var(--text);
      appearance: none; outline: none; border-radius: 0; transition: border-color 0.4s var(--ease);
    }
    .form-group input::placeholder, .form-group textarea::placeholder { color: #c4c3bf; }
    .form-group input:focus, .form-group select:focus, .form-group textarea:focus { border-color: var(--text); }
    .form-group textarea { height: 150px; resize: vertical; line-height: 1.9; }
    .form-group select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%23999'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 16px center; padding-right: 38px; cursor: pointer; }
    .form-group.error input, .form-group.error select, .form-group.error textarea { border-color: var(--error); }
    .error-msg { color: var(--error); font-size: 11.5px; letter-spacing: 0.04em; margin-top: 7px; }

    /* toggle areas */
    .toggle-area { background: var(--bg-soft); padding: clamp(24px, 3vw, 34px); margin-bottom: 28px; }
    .toggle-area .form-block-label { margin-top: 0; border-color: #E2E1DC; }
    .toggle-area .form-group:last-child { margin-bottom: 0; }

    /* privacy */
    .privacy { border: 1px solid var(--line); padding: clamp(24px, 3vw, 32px); margin: 36px 0; }
    .privacy p { font-size: 0.85rem; font-weight: 300; line-height: 1.9; margin-bottom: 10px; color: var(--text-mid); }
    .privacy a { color: var(--text); border-bottom: 1px solid var(--line); padding-bottom: 1px; }
    .privacy a:hover { border-color: var(--text); }
    .privacy-check { display: flex; align-items: center; gap: 12px; font-size: 0.88rem; font-weight: 500; cursor: pointer; margin-top: 18px; color: var(--text); }
    .privacy-check input { width: 18px; height: 18px; accent-color: var(--text); cursor: pointer; }
    .agreement-error { margin-top: 10px; }

    /* submit pill */
    .form-submit { display: flex; justify-content: center; margin-top: 8px; }
    .submit-pill { background: var(--text); color: #fff; border: none; cursor: pointer; padding: 16px 16px 16px 40px; border-radius: 999px; display: inline-flex; align-items: center; gap: clamp(28px, 4vw, 48px); font-family: "Noto Serif JP", serif; transition: transform 0.6s var(--ease), box-shadow 0.6s var(--ease); }
    .submit-pill:hover { transform: translateY(-3px); box-shadow: 0 14px 38px rgba(0,0,0,0.20); }
    .submit-pill__text { font-size: 1rem; letter-spacing: 0.12em; }
    .submit-pill__circle { width: 46px; height: 46px; border-radius: 50%; background: #fff; flex-shrink: 0; display: flex; align-items: center; justify-content: center; transition: transform 0.5s var(--ease); }
    .submit-pill__circle::before { content: ''; width: 8px; height: 8px; border-top: 1px solid var(--text); border-right: 1px solid var(--text); transform: rotate(45deg); }
    .submit-pill:hover .submit-pill__circle { transform: translateX(4px); }

    /* success */
    .form-success { display: none; text-align: center; padding: clamp(40px, 6vh, 72px) 0; }
    .form-success.is-shown { display: block; }
    .form-success__title { font-family: "Noto Serif JP", serif; font-size: clamp(1.3rem, 2.2vw, 1.8rem); margin-bottom: 16px; }
    .form-success__text { font-size: 0.9rem; font-weight: 300; color: var(--text-mid); line-height: 2; }

    /* ===== FOOTER ===== */
    .footer { padding: clamp(64px, 9vh, 110px) clamp(20px, 5vw, 56px) 36px; border-top: 1px solid var(--line); }
    .footer__top { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 40px; padding-bottom: clamp(40px, 6vh, 72px); border-bottom: 1px solid var(--line); }
    .footer__logo img { height: 22px; width: auto; }
    .footer__tagline { font-size: 11px; letter-spacing: 0.2em; color: var(--text-soft); margin-top: 18px; }
    .footer__nav { display: flex; flex-wrap: wrap; gap: 14px 40px; }
    .footer__nav a { font-size: 12.5px; font-weight: 400; letter-spacing: 0.08em; color: var(--text-mid); transition: color 0.4s var(--ease); }
    .footer__nav a:hover { color: var(--text); }
    .footer__bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; padding-top: 28px; }
    .footer__copy { font-size: 10.5px; letter-spacing: 0.14em; color: var(--text-soft); }

    @media (max-width: 768px) {
      .header__nav { display: none; }
      .header__burger { display: block; z-index: 110; }
      .footer__top { flex-direction: column; gap: 28px; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { animation: none !important; transition: none !important; }
      .reveal { opacity: 1; transform: none; }
      .page-hero__title .line > span, .page-hero__label { opacity: 1; transform: none; }
    }