/* ========================================
   リセットとベーススタイル
   ======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif, 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', Meiryo, sans-serif;
    line-height: 1.6;
    color: #333;
    min-height: 100vh;
    background: #ffffff;
    display: flex;
    flex-direction: column;
}

body.logged-in {
    background: linear-gradient(135deg, #ffffff 0%, #e8f0fe 25%, #f3e5f5 50%, #e8f0fe 75%, #ffffff 100%);
    background-attachment: fixed;
}

.main {
    flex: 1 0 auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========================================
   ヘッダー
   ======================================== */
.header {
    background: #ffffff;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    margin: 0;
    font-size: 1.8rem;
    font-weight: 700;
    font-family: 'Arial Hebrew', sans-serif;
}

.logo-link {
    text-decoration: none;
    color: #000000;
    transition: opacity 0.3s ease;
}

.logo-link:hover {
    opacity: 0.7;
}

/* ハンバーガーメニュー */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 25px;
    height: 3px;
    background: #000;
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

.nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* ========================================
   ボタン
   ======================================== */
.btn {
    padding: 0.75rem 5rem;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(to right, #56C1FF 0%, #0076BA 100%);
    color: white;
    box-shadow: 0 2px 8px rgba(0, 118, 186, 0.25);
    border: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 118, 186, 0.4);
}

.btn-secondary {
    background: white;
    color: #0076BA;
    border: 2px solid #0076BA;
    box-shadow: 0 2px 8px rgba(0, 118, 186, 0.15);
}

.btn-secondary:hover {
    background: #f0f8ff;
    color: #0076BA;
    border-color: #0076BA;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 118, 186, 0.25);
}

.btn-large {
    padding: 0.75rem 5rem;
    font-size: 1.2rem;
    /* min-width: 250px; */
    background: white;
    color: #0076BA;
    border: 2px solid #0076BA;
}

.btn-large:hover {
    background: #f0f8ff;
    transform: translateY(-2px);
}

/* ========================================
   ヒーローセクション
   ======================================== */
.hero-section {
    padding: 4rem 2rem;
    text-align: center;
    position: relative;
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.hero-logo-container {
    /* margin-bottom: 1rem; */
    position: relative;
    text-align: center;
}

.hero-logo-image {
    max-width: 100%;
    height: auto;
    max-height: 200px;
}

.hero-logo-pc {
    display: block;
    margin: 0 auto;
}

.hero-logo-sp {
    display: none;
}

.hero-tokushoho-link {
    text-align: center;
    margin: 1rem 0 2rem 0;
}

.hero-tokushoho-link .tokushoho-link {
    font-size: 0.85rem;
}

.hero-subtitle {
    font-size: 1.8rem;
    color: #000;
    margin-bottom: 3rem;
    letter-spacing: 0.1em;
    font-weight: bold;
}

.hero-video-container {
    position: relative;
    max-width: 388px;
    margin: 0 auto 1rem;
    border-radius: 20px;
    overflow: hidden;
    /* box-shadow: 0 10px 40px rgba(0,0,0,0.15); */
}

.hero-video-thumbnail {
    width: 100%;
    height: auto;
    display: block;
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: rgba(0, 118, 186, 0.9);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-play-btn:hover {
    background: rgba(0, 118, 186, 1);
    transform: translate(-50%, -50%) scale(1.1);
}

.hero-feature-images {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    max-width: 800px;
    flex-wrap: wrap;
    margin-bottom: 35px;
}

.hero-feature-img {
    max-width: 125px;
    width: 100%;
    height: auto;
    object-fit: contain;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-hero {
    padding: 0.75rem 5rem;
    font-size: 1.1rem;
    min-width: 180px;
}

/* 追従型バッジ */
.floating-badge {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 100;
    animation: float 3s ease-in-out infinite;
}

.floating-badge a {
    display: block;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.floating-badge a:hover {
    transform: scale(1.05);
}

.badge-image {
    width: 150px;
    height: auto;
    filter: drop-shadow(0 5px 15px rgba(0,0,0,0.2));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* ========================================
   キャッチコピーセクション
   ======================================== */
.concept-section {
    padding: 5rem 2rem;
    background: #f8f9fa;
}

.concept-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    line-height: 1.4;
    color: #000;
}

.concept-description {
    font-size: 1.1rem;
    text-align: center;
    line-height: 2;
    margin-bottom: 3rem;
    color: #000;
    font-weight: bold;
}

.underline-text {
    text-decoration-thickness: 3px;
    background-color: #FFFF00;
    padding: 0 4px;
}

.concept-image {
    max-width: 900px;
    margin: 0 auto;
}

.concept-img {
    width: 100%;
    height: auto;
    border-radius: 20px;
}

/* ========================================
   動画ボタンセクション
   ======================================== */
.video-buttons-section {
    padding: 5rem 2rem;
    background: #ffffff;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    /* margin-bottom: 3rem; */
    line-height: 1.4;
    margin-bottom: 1rem;
}

.video-buttons-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.video-button-item {
    text-align: center;
}

.video-number {
    width: 240px;
    height: auto;
    margin-bottom: 1.5rem;
}

.video-btn {
    width: 100%;
    height: 315px;
    background: #000000;
    border: none;
    border-radius: 32px;
    object-fit: cover;
    display: block;
    transition: all 0.3s ease;
}

.video-btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

/* ========================================
   料金プランセクション
   ======================================== */
.pricing-section {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #e3f2fd 0%, #f3e5f5 100%);
}

.pricing-logo {
    max-width: 400px;
    height: auto;
    margin: 0 auto 1rem;
    display: block;
}

.pricing-subtitle {
    display: block;
    font-size: 2.5rem;
    color: #0076BA;
    margin-top: 1rem;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    /* gap: 2rem; */
    max-width: 1100px;
    margin: 3rem auto 0;
}

.pricing-single {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 600px;
    margin: 3rem auto 0;
}

.pricing-card {
    /* background: #ffffff; */
    border-radius: 20px;
    overflow: hidden;
    /* box-shadow: 0 5px 20px rgba(0,0,0,0.1); */
    transition: all 0.3s ease;
}

.pricing-card.recommended {
    /* border: 3px solid #FFA500; */
    /* transform: scale(1.05); */
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
}

.pricing-card.recommended:hover {
    transform: scale(1.05) translateY(-10px);
}

.pricing-image {
    width: 135%;
    height: auto;
    display: block;
    margin-left: -63px;
}

.pricing-image-single {
    width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   キャンペーンセクション
   ======================================== */
.campaign-section {
    padding: 5rem 2rem;
    background: #ffffff;
}

.campaign-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.campaign-title {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.8;
    margin-bottom: 1rem;
    color: #0076BA;
    font-family: Arial;
}

.campaign-title-number {
    font-size: 3.5rem;
    font-family: Arial;
}
                <div class="pricing-single">
                    <div class="pricing-card" onclick="window.authManager && window.authManager.showRegisterFormWithPlan('lite')" style="cursor: pointer;">
                        <img src="/images/sss3.001-min.png" alt="Lite プラン" class="pricing-image-single">
                    </div>
                </div>
            </div>
        </section>

        <!-- 6. キャンペーンセクション -->
        <section class="ca

.br-pc {
    display: inline;
}

.br-sp {
    display: none;
}

.campaign-gift {
    font-size: 2rem;
}

.campaign-price {
    font-size: 4rem;
    color: #0076BA;
    display: inline-block;
    margin: 0 0.5rem;
    font-weight: 700;
}

.campaign-note {
    font-size: 1.0rem;
    color: #000;
    margin-bottom: 3rem;
    font-weight: bold;
}

.campaign-steps {
    list-style: none;
    margin-bottom: 2rem;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.campaign-step {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0;
    margin-bottom: 0;
    background: transparent;
    border-radius: 10px;
}

.step-number {
    width: 40px;
    height: 40px;
    background: linear-gradient(to right, #56C1FF 0%, #0076BA 100%);
    color: white;
    border-radius: 15%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.step-text {
    font-size: 1.1rem;
    font-weight: 600;
}

/* ========================================
   フッター画像セクション
   ======================================== */
.footer-image-section {
    padding: 0;
    background: #f8f9fa;
    position: relative;
}

.footer-image {
    width: 100%;
    height: auto;
    display: block;
}

.footer-logo-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40%;
    max-width: 400px;
    height: auto;
}

/* ========================================
   特定商取引法リンクセクション
   ======================================== */
.tokushoho-link-section {
    text-align: center;
    padding: 2rem 0;
    background: none;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.tokushoho-link {
    color: #fff;
    text-decoration: none;
    font-size: 0.6rem;
    /* border-bottom: 1px solid #fff; */
    padding-bottom: 2px;
    transition: color 0.3s ease, border-bottom-color 0.3s ease;
}

.tokushoho-link:hover {
    color: #ccc;
    border-bottom-color: #ccc;
}

.link-separator {
    color: #fff;
    font-size: 0.9rem;
}

/* ========================================
   特定商取引法モーダル
   ======================================== */
.tokushoho-modal-content {
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
}

.tokushoho-content h2 {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: #2c3e50;
    text-align: center;
    border-bottom: 2px solid #007bff;
    padding-bottom: 1rem;
}

.tokushoho-content h3 {
    font-size: 1.2rem;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    color: #2c3e50;
    border-left: 4px solid #007bff;
    padding-left: 0.75rem;
}

.tokushoho-content p {
    margin-bottom: 1rem;
    line-height: 1.8;
    color: #333;
}

.tokushoho-content .note {
    font-size: 0.9rem;
    color: #666;
    margin-top: -0.5rem;
}

/* ========================================
   フッター
   ======================================== */
.footer {
    background: #333;
    color: #fff;
    padding: 2rem 0;
    text-align: center;
    flex-shrink: 0;
    margin-top: auto;
}

.footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.sns-links {
    display: flex;
    gap: 20px;
    align-items: center;
    justify-content: center;
}

.sns-icon {
    display: inline-block;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.sns-icon:hover {
    transform: scale(1.1);
    opacity: 0.8;
}

.sns-icon img {
    width: 40px;
    height: 40px;
    display: block;
}

@media (max-width: 768px) {
    .hero-feature-img {
        max-width: 100px;
    }
    
    .sns-icon img {
        width: 35px;
        height: 35px;
    }
    
    .sns-links {
        gap: 15px;
    }
}

/* ========================================
   モーダル
   ======================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    overflow: auto;
}

.modal-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

/* 新規登録モーダルは全画面表示 */
.modal-content:has(.register-page) {
    background-color: transparent;
    margin: 0;
    padding: 0;
    width: 100%;
    max-width: 100%;
    max-height: 100vh;
    border-radius: 0;
    overflow-y: auto;
}

/* 新規登録モーダルの外側の閉じるボタンを非表示 */
.modal-content:has(.register-page) ~ .close {
    display: none;
}

#authModal:has(.register-page) .close:not(.register-close-btn) {
    display: none;
}

.video-modal-content {
    background-color: transparent;
    margin: 5% auto;
    width: 90%;
    max-width: 900px;
    position: relative;
}

.video-modal-content video {
    width: 100%;
    border-radius: 10px;
}

.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover,
.close:focus {
    color: #000;
}

.video-modal .close {
    color: #fff;
    position: absolute;
    top: -40px;
    right: 0;
}

/* ========================================
   ログイン済み時のコンテンツ
   ======================================== */
body.logged-in #heroSection {
    display: none;
}

body.logged-in .concept-section,
body.logged-in .video-buttons-section,
body.logged-in .pricing-section,
body.logged-in .campaign-section,
body.logged-in .footer-image-section {
    display: none;
}

body.logged-in #mainContent {
    display: block !important;
}

body.logged-in .floating-badge {
    display: none;
}

.main-content {
    padding: 3rem 0;
}

.share-section {
    margin-bottom: 3rem;
}

.share-section h3 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.knowledge-form {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #2c3e50;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

/* ========================================
   レスポンシブ（SP対応）
   ======================================== */
@media (max-width: 768px) {
    /* ヘッダー */
    .hamburger {
        display: flex;
    }
    
    .nav {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 250px;
        height: calc(100vh - 70px);
        background: #fff;
        box-shadow: -2px 0 10px rgba(0,0,0,0.1);
        flex-direction: column;
        padding: 2rem 1rem;
        transition: right 0.3s ease;
    }
    
    .nav.active {
        right: 0;
    }
    
    .nav .btn {
        width: 100%;
        padding: 0.75rem 3rem;
    }
    
    /* ヒーローセクション */
    .hero-section {
        padding: 7rem 1rem;
    }
    
    .hero-logo-pc {
        display: none;
    }
    
    .hero-logo-sp {
        display: block;
        margin: 0 auto;
    }
    
    .hero-logo-image {
        max-height: 150px;
        max-width: 80%;
    }
    
    .hero-tokushoho-link .tokushoho-link {
        font-size: 0.7rem;
    }
    
    .hero-subtitle {
        font-size: 1.15rem;
        letter-spacing: 0.3em;
        font-weight: bold;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn-hero {
        width: 83%;
        margin: auto;
        height: 60px;
    }
    
    .video-btn {
        height: 360px;
        border-radius: 32px;
    }
    
    .floating-badge {
        bottom: 15px;
        right: 15px;
    }
    
    .badge-image {
        width: 100px;
    }
    
    /* キャッチコピー */
    .concept-section {
        padding: 3rem 1rem;
    }
    
    .concept-title {
        font-size: 1.8rem;
    }
    
    .concept-description {
        font-size: 0.75rem;
    }
    
    /* 動画ボタン */
    .video-buttons-section {
        padding: 3rem 1rem;
    }
    
    .video-buttons-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    /* 料金プラン */
    .pricing-section {
        padding: 3rem 1rem;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        /* gap: 1.5rem; */
        margin: 0;
    }
    
    .pricing-card.recommended {
        transform: scale(1);
    }
    
    .pricing-card.recommended:hover {
        transform: translateY(-10px);
    }
    
    .pricing-logo {
        max-width: 300px;
    }
    
    .pricing-subtitle {
        font-size: 2rem;
    }
    
    /* キャンペーン */
    .campaign-section {
        padding: 3rem 1rem;
    }
    
    .campaign-title {
        font-size: 1.8rem;
        line-height: 1.2;
    }
    
    .br-sp {
        display: inline;
    }
    
    .br-pc {
        display: none;
    }
    
    .campaign-steps {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-left: 70px;
    }
    
    .campaign-note {
        font-size: 0.9rem;
        margin-bottom: 2rem;
    }
    
    .campaign-price {
        font-size: 6.5rem;
    }
    
    .btn-large {
        width: 100%;
        padding: 1rem 2rem;
        font-size: 1.1rem;
        min-width: auto;
    }
    
    /* モーダル */
    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 1.5rem;
    }
    
    .video-modal-content {
        width: 95%;
    }
    
    /* 特定商取引法モーダル */
    .tokushoho-content h2 {
        font-size: 1.7rem;
    }
}

/* PC専用スタイル */
@media (min-width: 769px) {
    .hero-section {
        min-height: auto;
    }
    
    .btn-hero {
        width: 80%;
        height: 70px;
    }

    .pricing-image-single {
        width: 67%;
        margin: auto;
    }
}

/* ========================================
   新規登録ページ
   ======================================== */
.register-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.register-card {
    width: 100%;
    max-width: 560px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 32px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    position: relative;
}

.register-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    color: #6b7280;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
    background: none;
    border: none;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s ease;
}

.register-close-btn:hover {
    color: #1f2937;
}

.register-title {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
    color: #1f2937;
}

.register-form .form-group {
    margin-bottom: 20px;
}

.register-form label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
}

.register-form input[type="email"],
.register-form input[type="password"] {
    width: 100%;
    height: 48px;
    padding: 0 16px;
    font-size: 16px;
    border: 1px solid #d1d5db;
    border-radius: 8px;
    background: #ffffff;
    transition: all 0.3s ease;
}

.register-form input[type="email"]:focus,
.register-form input[type="password"]:focus {
    outline: none;
    border-color: #2d9cdb;
    box-shadow: 0 0 0 3px rgba(45, 156, 219, 0.1);
}

.error-message {
    color: #dc2626;
    font-size: 13px;
    margin-top: 6px;
}

/* プラン選択セクション */
.plan-selection-section {
    background: #f3f4f6;
    border-radius: 8px;
    padding: 20px;
    margin: 24px 0;
}

.plan-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 16px;
}

.plan-label {
    font-size: 15px;
    font-weight: 600;
    color: #1f2937;
}

.plan-campaign {
    color: #dc2626;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
}

.plan-options {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.plan-option {
    display: flex !important;
    align-items: center !important;
    gap: 12px;
    cursor: pointer;
    padding: 12px;
    border-radius: 6px;
    transition: background 0.2s ease;
}

.plan-option:hover {
    background: rgba(255, 255, 255, 0.5);
}

.plan-option input[type="radio"] {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin: 0 !important;
}

.plan-details {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex: 1;
    text-align: center;
}

.plan-text {
    font-size: 14px;
    color: #374151;
    line-height: 20px;
    font-weight: 600;
}

.plan-price {
    font-size: 14px;
    font-weight: 600;
    color: #1f2937;
    line-height: 20px;
    white-space: nowrap;
}

/* お支払いボタン */
.btn-payment {
    width: 100%;
    height: 52px;
    background: linear-gradient(to right, #2d9cdb 0%, #0076ba 100%);
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 16px;
}

.btn-payment:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(45, 156, 219, 0.4);
}

.btn-payment:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    opacity: 0.6;
}

.register-login-link {
    text-align: center;
    font-size: 14px;
    color: #6b7280;
}

.register-login-link a {
    color: #2d9cdb;
    text-decoration: none;
    font-weight: 600;
}

.register-login-link a:hover {
    text-decoration: underline;
}

/* レスポンシブ（タブレット） */
@media (max-width: 768px) {
    .register-card {
        max-width: min(520px, 92vw);
        padding: 24px;
    }
    
    .register-title {
        font-size: 20px;
    }
    
    .register-form label {
        font-size: 13px;
    }
}

/* レスポンシブ（スマホ） */
@media (max-width: 480px) {
    .register-page {
        align-items: flex-start;
        padding: 20px 16px;
    }
    
    .register-card {
        max-width: 92vw;
        padding: 20px 18px;
    }
    
    .register-title {
        font-size: 18px;
        margin-bottom: 20px;
    }
    
    .register-form .form-group {
        margin-bottom: 16px;
    }
    
    .register-form label {
        font-size: 13px;
        margin-bottom: 6px;
    }
    
    .register-form input[type="email"],
    .register-form input[type="password"] {
        height: 44px;
        font-size: 16px;
    }
    
    .plan-selection-section {
        padding: 16px;
    }
    
    .plan-header {
        flex-direction: column;
        align-items: center;
        gap: 6px;
    }
    
    .plan-option {
        flex-wrap: nowrap !important;
        gap: 8px;
        align-items: flex-start !important;
    }
    
    .plan-details {
        flex-direction: column;
        align-items: center;
        gap: 4px;
    }
    
    .plan-text {
        font-size: 13px;
        white-space: nowrap;
    }
    
    .plan-price {
        font-size: 13px;
    }
    
    .btn-payment {
        height: 48px;
        font-size: 15px;
    }
    
    .register-login-link {
        font-size: 13px;
    }
}