* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --primary: #fe2c55;
            --secondary: #00f2ea;
            --bg: #0a0a0a;
            --card-bg: #141414;
            --card-border: #222;
            --text: #ffffff;
            --text-dim: #888;
            --blue: #007bff;
            --green: #28a745;
        }

        body {
            background: var(--bg);
            color: var(--text);
            font-family: 'Inter', sans-serif;
            overflow-x: hidden;
        }

        /* --- ナビゲーション --- */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            padding: 16px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: rgba(10, 10, 10, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .nav-logo {
            font-size: 1.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .nav-links a {
            color: var(--text-dim);
            text-decoration: none;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: 8px;
            transition: all 0.2s;
            white-space: nowrap;
        }

        .nav-links a:hover {
            color: var(--text);
            background: rgba(255, 255, 255, 0.05);
        }

        .btn-login {
            background: rgba(255, 255, 255, 0.08) !important;
            border: 1px solid rgba(255, 255, 255, 0.12);
            color: var(--text) !important;
            font-weight: 600;
        }

        /* 言語切替ボタン */
        .lang-switcher {
            display: flex;
            gap: 5px;
            margin-left: 10px;
            background: #222;
            padding: 3px;
            border-radius: 6px;
        }

        .lang-btn {
            background: none;
            border: none;
            color: #666;
            font-size: 11px;
            padding: 4px 8px;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 700;
            transition: all 0.2s;
        }

        .lang-btn:hover {
            color: #aaa;
        }

        .lang-btn.active {
            background: #333;
            color: var(--secondary);
        }

        /* --- メインコンテンツ --- */
        .page {
            padding: 120px 20px 80px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .page-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .page-header h1 {
            font-size: 2.4rem;
            font-weight: 900;
            margin-bottom: 16px;
        }

        .page-header h1 .accent {
            color: var(--primary);
        }

        .page-header p {
            color: var(--text-dim);
            font-size: 1.05rem;
            line-height: 1.7;
            max-width: 550px;
            margin: 0 auto;
        }

        /* --- プランカード --- */
        .plans-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-bottom: 60px;
        }

        .plan-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: 20px;
            padding: 36px 28px;
            display: flex;
            flex-direction: column;
            position: relative;
            transition: all 0.3s;
        }

        .plan-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
        }

        .plan-card.quarterly {
            border-color: var(--primary) !important;
            box-shadow: 0 0 0 3px rgba(254, 44, 85, 0.3);
        }

        .plan-card.monthly {
            border-color: var(--blue);
        }

        .plan-card.monthly .plan-badge {
            background: var(--blue);
        }

        .plan-card.biannual {
            border-color: var(--green);
        }

        .plan-card.biannual .plan-badge {
            background: var(--green);
        }

        .plan-badge {
            position: absolute;
            top: -13px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 700;
            padding: 4px 18px;
            border-radius: 50px;
            letter-spacing: 0.05em;
        }

        .plan-name {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-dim);
        }

        .plan-price {
            font-size: 2.6rem;
            font-weight: 900;
            margin-bottom: 4px;
            display: flex;
            align-items: baseline;
            gap: 4px;
        }

        .plan-price .currency {
            font-size: 1.2rem;
            font-weight: 700;
        }

        .plan-price .period {
            font-size: 0.85rem;
            color: var(--text-dim);
            font-weight: 500;
        }

        .plan-unit-price {
            font-size: 0.82rem;
            color: var(--text-dim);
            margin-bottom: 24px;
        }

        .plan-unit-price .highlight {
            color: var(--secondary);
            font-weight: 600;
        }

        .plan-features {
            list-style: none;
            margin-bottom: 32px;
            flex-grow: 1;
        }

        .plan-features li {
            padding: 8px 0;
            font-size: 0.88rem;
            color: #bbb;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .plan-features li::before {
            content: '\2713';
            color: var(--secondary);
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .plan-btn {
            display: block;
            width: 100%;
            padding: 14px;
            border-radius: 12px;
            text-align: center;
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 700;
            transition: all 0.25s;
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .plan-btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 15px rgba(254, 44, 85, 0.3);
        }

        .plan-btn-primary:hover {
            filter: brightness(1.15);
            box-shadow: 0 6px 25px rgba(254, 44, 85, 0.45);
        }

        .plan-btn-outline {
            background: transparent;
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .plan-btn-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.3);
        }

        /* 1ヶ月プランのボタン (青) */
        .plan-card.monthly .plan-btn {
            background: var(--blue);
            color: #fff;
        }

        .plan-card.monthly .plan-btn:hover {
            filter: brightness(1.15);
            box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
        }

        /* 6ヶ月プランのボタン (緑) */
        .plan-card.biannual .plan-btn {
            background: var(--green);
            color: #fff;
        }

        .plan-card.biannual .plan-btn:hover {
            filter: brightness(1.15);
            box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
        }

        /* --- 無料トライアルバナー --- */
        .trial-banner {
            background: linear-gradient(135deg, rgba(254, 44, 85, 0.08), rgba(0, 242, 234, 0.08));
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 20px;
            padding: 40px 32px;
            text-align: center;
            margin-bottom: 60px;
            position: relative;
        }

        .trial-banner h2 {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .trial-banner p {
            color: var(--text-dim);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 600px;
            margin: 0 auto 24px;
        }

        .trial-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 242, 234, 0.12);
            border: 1px solid rgba(0, 242, 234, 0.25);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--secondary);
            font-weight: 600;
        }

        .trial-btn {
            display: block;
            width: 100%;
            padding: 14px;
            border-radius: 12px;
            text-align: center;
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 700;
            transition: all 0.25s;
            cursor: pointer;
            border: none;
            white-space: nowrap;
        }

        .trial-btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 15px rgba(254, 44, 85, 0.3);
        }

        .trial-btn-primary:hover {
            filter: brightness(1.15);
            box-shadow: 0 6px 25px rgba(254, 44, 85, 0.45);
        }

        .trial-btn-outline {
            background: transparent;
            color: var(--text);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }

        .trial-btn-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(255, 255, 255, 0.3);
        }

        /* --- FAQ セクション --- */
        .faq-section {
            margin-bottom: 60px;
        }

        .faq-title {
            font-size: 1.6rem;
            font-weight: 800;
            text-align: center;
            margin-bottom: 40px;
        }

        .faq-list {
            max-width: 700px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--card-border);
            padding: 20px 0;
        }

        .faq-q {
            font-size: 0.95rem;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
        }

        .faq-q::after {
            content: '+';
            font-size: 1.3rem;
            color: var(--text-dim);
            transition: transform 0.2s;
            flex-shrink: 0;
        }

        .faq-item.open .faq-q::after {
            content: '\2212';
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
            color: var(--text-dim);
            font-size: 0.88rem;
            line-height: 1.7;
        }

        .faq-item.open .faq-a {
            max-height: 200px;
            padding-top: 12px;
        }

        /* --- フッター --- */
        .footer {
            text-align: center;
            padding: 40px 20px;
            border-top: 1px solid var(--card-border);
            color: var(--text-dim);
            font-size: 0.8rem;
        }

        @media (max-width: 800px) {
            .nav {
                padding: 12px 10px;
                flex-direction: column;
                align-items: center;
                gap: 8px;
                height: auto;
                position: relative;
                width: 100%;
            }

            .nav-logo {
                font-size: 1.2rem;
                text-align: center;
                margin-bottom: 2px;
            }

            .nav-links {
                width: 100%;
                justify-content: center;
                gap: 6px;
                flex-wrap: wrap;
            }

            .nav-links a {
                padding: 6px 10px;
                font-size: 0.8rem;
            }

            .plans-grid {
                grid-template-columns: 1fr;
                max-width: 400px;
                margin: 0 auto 60px;
            }

            .page-header h1 {
                font-size: 1.8rem;
            }
        }

@keyframes modalPop {
            from { transform: scale(0.95); opacity: 0; }
            to   { transform: scale(1); opacity: 1; }
        }