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

body {
    font-family: 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

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

/* ヘッダーとナビゲーション */
header {
    background: linear-gradient(135deg, #ff9900 0%, #ff6600 100%);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

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

.logo h1 {
    color: white;
    font-size: 1.8rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
    padding: 0.5rem 1rem;
    border-radius: 5px;
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: rgba(255,255,255,0.2);
}

/* ヒーローセクション */
.hero {
    background: linear-gradient(135deg, #ff9900 0%, #ff6600 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    opacity: 0.95;
}

/* ページヘッダー */
.page-header {
    background: linear-gradient(135deg, #ff9900 0%, #ff6600 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.95;
}

/* 節約紹介セクション */
.savings-intro {
    padding: 3rem 0;
    background: white;
}

.intro-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.intro-content h2 {
    font-size: 2rem;
    color: #333;
    margin-bottom: 1rem;
}

.intro-content > p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 2rem;
}

.savings-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ff9900;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: #666;
}

/* Amazon節約テクニックセクション */
.amazon-tips-section {
    padding: 3rem 0;
    background: #f9f9f9;
}

.amazon-tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.amazon-tip-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    border-top: 4px solid #ff9900;
}

.amazon-tip-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

.tip-icon {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
}

.amazon-tip-card h3 {
    font-size: 1.3rem;
    color: #333;
    margin-bottom: 1rem;
    text-align: center;
}

.amazon-tip-card p {
    color: #666;
    line-height: 1.8;
    text-align: left;
}

/* 高度な節約テクニックセクション */
.advanced-tips-section {
    padding: 3rem 0;
    background: white;
}

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

.advanced-tip-item {
    background: #f9f9f9;
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    border-left: 5px solid #ff9900;
    transition: transform 0.3s;
}

.advanced-tip-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.advanced-tip-item h3 {
    color: #ff9900;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.advanced-tip-item p {
    color: #666;
    line-height: 1.8;
}

/* なぜ節約が重要なのかセクション */
.why-save-section {
    padding: 3rem 0;
    background: linear-gradient(135deg, #fff5e6 0%, #ffe6cc 100%);
}

.why-save-content {
    max-width: 1000px;
    margin: 0 auto;
}

.intro-text {
    font-size: 1.2rem;
    color: #333;
    text-align: center;
    line-height: 1.8;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.why-save-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.why-save-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.why-save-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.why-save-card h3 {
    color: #ff9900;
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.why-save-card p {
    color: #666;
    line-height: 1.8;
}

/* クーポンセクション */
.coupons-section {
    padding: 3rem 0;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #333;
}

.coupons-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.coupon-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    position: relative;
    overflow: hidden;
}

.coupon-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
    background: linear-gradient(90deg, #ff9900, #ff6600);
}

.coupon-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}

.coupon-badge {
    display: inline-block;
    background: linear-gradient(135deg, #ff9900, #ff6600);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-weight: bold;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.coupon-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

.coupon-code {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: #666;
}

.coupon-code span {
    font-weight: bold;
    color: #ff9900;
    font-size: 1.3rem;
    font-family: 'Courier New', monospace;
    background: #fff5e6;
    padding: 0.3rem 0.8rem;
    border-radius: 5px;
    display: inline-block;
}

.coupon-desc {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.copy-btn,
.use-btn {
    display: block;
    width: 100%;
    padding: 0.8rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    text-align: center;
    margin-bottom: 0.5rem;
}

.copy-btn {
    background: #f0f0f0;
    color: #333;
}

.copy-btn:hover {
    background: #e0e0e0;
}

.use-btn {
    background: linear-gradient(135deg, #ff9900, #ff6600);
    color: white;
}

.use-btn:hover {
    background: linear-gradient(135deg, #ff6600, #ff9900);
    transform: scale(1.02);
}

/* ヒントセクション */
.tips-section {
    padding: 3rem 0;
    background: white;
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.tip-card {
    background: #f9f9f9;
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #ff9900;
    transition: transform 0.3s;
}

.tip-card:hover {
    transform: translateX(5px);
}

.tip-card h3 {
    color: #ff9900;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.tip-card p {
    color: #666;
    line-height: 1.6;
}

.cta-box {
    text-align: center;
    margin-top: 3rem;
}

.cta-button {
    display: inline-block;
    background: linear-gradient(135deg, #ff9900, #ff6600);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
}

.cta-button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 15px rgba(255,153,0,0.3);
}

/* コンテンツセクション */
.content-section {
    padding: 3rem 0;
}

.guide-article,
.about-article,
.privacy-article {
    background: white;
    padding: 2.5rem;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.guide-article h2,
.about-article h2,
.privacy-article h2 {
    color: #ff9900;
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #ff9900;
}

.guide-article h3,
.about-article h3,
.privacy-article h3 {
    color: #333;
    font-size: 1.3rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.guide-article p,
.about-article p,
.privacy-article p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.guide-article ul,
.about-article ul,
.privacy-article ul {
    margin-left: 2rem;
    margin-bottom: 1rem;
    color: #666;
}

.guide-article li,
.about-article li,
.privacy-article li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.guide-article a,
.about-article a,
.privacy-article a {
    color: #ff9900;
    text-decoration: underline;
}

.guide-article a:hover,
.about-article a:hover,
.privacy-article a:hover {
    color: #ff6600;
}

/* ステップボックス */
.step-box {
    margin-top: 2rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background: #f9f9f9;
    border-radius: 10px;
    border-left: 4px solid #ff9900;
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #ff9900, #ff6600);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.step-content h3 {
    margin-top: 0;
    color: #333;
    font-size: 1.2rem;
}

.step-content p {
    color: #666;
    margin-top: 0.5rem;
}

/* ヒントリスト */
.tips-list {
    margin-top: 2rem;
}

.tip-item {
    padding: 1.5rem;
    background: #f9f9f9;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    border-left: 4px solid #ff9900;
}

.tip-item h3 {
    color: #ff9900;
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.tip-item p {
    color: #666;
    margin-bottom: 0;
}

/* FAQリスト */
.faq-list {
    margin-top: 2rem;
}

.faq-item {
    padding: 1.5rem;
    background: #f9f9f9;
    border-radius: 10px;
    margin-bottom: 1.5rem;
}

.faq-item h3 {
    color: #ff9900;
    margin-top: 0;
    margin-bottom: 1rem;
}

.faq-item p {
    color: #666;
    margin-bottom: 0;
}

/* サービスリスト */
.service-list {
    margin-top: 2rem;
}

.service-item {
    padding: 1.5rem;
    background: #f9f9f9;
    border-radius: 10px;
    margin-bottom: 1.5rem;
    border-left: 4px solid #ff9900;
}

.service-item h3 {
    color: #ff9900;
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.service-item p {
    color: #666;
    margin-bottom: 0;
}

/* フッター */
footer {
    background: #333;
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #ff9900;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: #ff9900;
}

.footer-section p {
    color: #ccc;
    line-height: 1.6;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #555;
    color: #999;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .nav-menu {
        flex-direction: column;
        gap: 0.5rem;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .intro-content h2 {
        font-size: 1.5rem;
    }

    .savings-stats {
        gap: 2rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .amazon-tips-grid {
        grid-template-columns: 1fr;
    }

    .why-save-grid {
        grid-template-columns: 1fr;
    }

    .coupons-grid {
        grid-template-columns: 1fr;
    }

    .tips-grid {
        grid-template-columns: 1fr;
    }

    .step {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        margin: 0 auto;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.4rem;
    }

    .nav-menu {
        gap: 0.3rem;
    }

    .nav-menu a {
        padding: 0.3rem 0.5rem;
        font-size: 0.9rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

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

    .coupon-card {
        padding: 1.5rem;
    }
}