:root {
      --navy: #0A1D34;
      --deep-blue: #152A4D;
      --lime: #A8FF3C;
      --lime-dark: #7acc1e;
      --gray-bg: #F2F4F7;
      --gray-mid: #D1D5DB;
      --white: #FFFFFF;
      --text-dark: #0A1D34;
      --text-mid: #374151;
      --text-light: #6B7280;
      --font-display: 'Montserrat', sans-serif;
      --font-body: 'Noto Sans JP', sans-serif;
      --radius-md: 8px;
      --radius-lg: 12px;
    }

    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-body);
      color: var(--text-dark);
      background: var(--gray-bg);
      line-height: 1.85;
      font-size: 16px;
    }
    a { color: inherit; text-decoration: none; }
    img { display: block; width: 100%; }
    .container { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

    .navbar {
      position: sticky; top: 0; z-index: 20;
      background: rgba(10,29,52,.98);
      backdrop-filter: blur(16px);
      box-shadow: 0 2px 24px rgba(0,0,0,.16);
    }
    .nav-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
    .nav-logo { display: inline-flex; align-items: center; flex-shrink: 0; }
    .nav-logo-img { height: 48px; width: auto; object-fit: contain; }
    .nav-actions { display: flex; align-items: center; gap: 14px; }
    .back-link {
      color: rgba(255,255,255,.72); font-size: 13px; font-weight: 700;
      transition: color .2s;
    }
    .back-link:hover, .back-link:focus-visible { color: var(--lime); outline: none; }
    .language-switcher {
      display: inline-flex; align-items: center; gap: 2px;
      padding: 3px; border-radius: 999px;
      background: rgba(255,255,255,.1); border: 1px solid rgba(255,255,255,.18);
    }
    .lang-option {
      min-width: 38px; min-height: 32px; padding: 7px 10px;
      display: inline-flex; align-items: center; justify-content: center;
      border-radius: 999px; font-family: var(--font-display); font-size: 12px; font-weight: 800;
      letter-spacing: .06em; color: rgba(255,255,255,.62);
      transition: background .2s, color .2s;
    }
    .lang-option:hover, .lang-option:focus-visible { color: var(--white); background: rgba(255,255,255,.12); outline: none; }
    .lang-option.is-active { background: var(--lime); color: var(--navy); }

    .page-hero {
      background: var(--navy);
      color: var(--white);
      padding: 48px 0 44px;
      position: relative;
      overflow: hidden;
    }
    .page-hero::after {
      content: ""; position: absolute; right: -160px; bottom: -180px;
      width: 520px; height: 320px;
      background: radial-gradient(ellipse, rgba(168,255,60,.18) 0%, transparent 70%);
      pointer-events: none;
    }
    .eyebrow {
      display: block; font-size: 11px; font-weight: 700; letter-spacing: .2em;
      text-transform: uppercase; color: var(--lime); margin-bottom: 10px;
    }
    h1 {
      position: relative; z-index: 1;
      font-family: var(--font-display);
      font-size: clamp(30px, 4.6vw, 46px);
      line-height: 1.1;
      font-weight: 900;
      margin-bottom: 12px;
    }
    .lead {
      position: relative; z-index: 1;
      max-width: 720px;
      color: rgba(255,255,255,.68);
      font-size: 15px;
      line-height: 1.75;
    }
    .updated {
      position: relative; z-index: 1;
      margin-top: 12px;
      display: inline-flex;
      padding: 5px 12px;
      border-radius: 999px;
      background: rgba(255,255,255,.1);
      color: rgba(255,255,255,.78);
      font-size: 12px;
      font-weight: 700;
    }

    .policy-wrap { padding: 58px 0 72px; }
    .policy-card {
      background: var(--white);
      border: 1px solid rgba(10,29,52,.12);
      border-radius: var(--radius-lg);
      padding: 42px;
      box-shadow: 0 16px 48px rgba(10,29,52,.08);
    }
    .policy-section + .policy-section { margin-top: 34px; padding-top: 30px; border-top: 1px solid var(--gray-mid); }
    .policy-section h2 {
      font-family: var(--font-display);
      font-size: 21px;
      line-height: 1.35;
      color: var(--navy);
      margin-bottom: 12px;
    }
    .policy-section p, .policy-section li { color: var(--text-mid); font-size: 14px; line-height: 1.85; }
    .policy-section ul { padding-left: 1.2em; display: grid; gap: 5px; }
    .note {
      margin-top: 18px; padding: 16px 18px; border-radius: var(--radius-md);
      background: #F6FAF1; border: 1px solid rgba(122,204,30,.28);
      color: var(--text-mid); font-size: 13px; line-height: 1.8;
    }
    .contact-box {
      display: grid; gap: 8px;
      padding: 18px; border-radius: var(--radius-md);
      background: var(--gray-bg);
      border: 1px solid var(--gray-mid);
      color: var(--text-mid);
      font-size: 14px;
    }
    .contact-box strong { color: var(--navy); }
    .contact-box a { color: var(--navy); font-weight: 800; text-decoration: underline; text-decoration-color: var(--lime-dark); text-underline-offset: 4px; }

    .footer { background: var(--deep-blue); color: rgba(255,255,255,.5); padding: 38px 0 28px; }
    .footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 18px; flex-wrap: wrap; }
    .ft-brand { display: flex; align-items: center; gap: 12px; }
    .ft-brand img { width: 190px; height: auto; object-fit: contain; }
    .ft-brand span { display: none; }
    .footer a { color: rgba(255,255,255,.72); }
    .footer a:hover, .footer a:focus-visible { color: var(--lime); outline: none; }
    .footer-meta { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; font-size: 12px; }

    @media (max-width: 700px) {
      .container { padding: 0 18px; }
      .nav-inner { min-height: 70px; }
      .nav-logo-img { height: 38px; }
      .nav-actions { gap: 10px; }
      .back-link { font-size: 12px; }
      .lang-option { min-width: 34px; min-height: 30px; padding: 6px 9px; font-size: 11px; }
      .page-hero { padding: 34px 0 30px; }
      h1 { font-size: 28px; margin-bottom: 10px; }
      .lead { font-size: 13px; line-height: 1.7; }
      .updated { margin-top: 10px; }
      .policy-wrap { padding: 32px 0 48px; }
      .policy-card { padding: 25px 18px; }
      .policy-section + .policy-section { margin-top: 26px; padding-top: 24px; }
      .policy-section h2 { font-size: 18px; }
      .footer-inner { align-items: flex-start; flex-direction: column; }
    }