/* ===== Base & Reset ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, 'Noto Sans JP', sans-serif;
    line-height: 1.8;
    color: #333;
    background-color: #f9f9f9;
    padding: 20px;
}

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

.section {
    padding: 60px 0;
    text-align: center;
}

.section-content {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

/* ===== Typography ===== */
.hero-title {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: #2c3e50;
    font-weight: 700;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 40px;
    color: #7f8c8d;
    font-weight: 400;
}

.hero-subtitle-multiline {
    display: block;
    line-height: 1.6;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #2c3e50;
    font-weight: 600;
}

h3 {
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: #2c3e50;
    font-weight: 600;
}

.description {
    margin-bottom: 30px;
    color: #7f8c8d;
}

/* ===== Components ===== */
.app-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 30px;
    border-radius: 25px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    display: block;
}

.store-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 40px 0;
    flex-wrap: wrap;
}

.store-button {
    display: inline-flex;
    align-items: center;
    padding: 15px 25px;
    background-color: #000;
    color: white;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.3s ease;
    font-size: 1rem;
    font-weight: 600;
    min-width: 180px;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.store-button:hover {
    background-color: #333;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.store-button svg {
    margin-right: 10px;
    width: 24px;
    height: 24px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.feature-card {
    background-color: #fff;
    padding: 30px 20px;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.feature-title {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 10px;
    font-weight: 600;
}

.feature-description {
    color: #7f8c8d;
    line-height: 1.6;
}

.steps-container {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
    margin: 50px 0;
}

.step-item {
    flex: 1;
    min-width: 200px;
    max-width: 250px;
}

.step-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    background-color: #3498db;
    color: white;
    border-radius: 50%;
    line-height: 60px;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
}

/* ===== Media Coverage Section ===== */
.media-section {
    background: linear-gradient(135deg, #f8f9fa, #e3f2fd);
    padding: 60px 0;
    margin: 0;
}

.media-badge {
    display: inline-block;
    background: linear-gradient(135deg, #2196f3, #1976d2);
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.3);
}

.media-subtitle {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 40px;
    font-weight: 400;
}

.media-images {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: flex-start;
    margin: 40px 0;
    flex-wrap: wrap;
}

.media-item.main {
    flex: 1;
    max-width: 400px;
}

.media-items-sub {
    display: flex;
    flex-direction: column;
    gap: 15px;
    flex: 1;
    max-width: 300px;
}

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

.media-image {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 3px solid white;
}

.media-image:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 12px 35px rgba(0,0,0,0.2);
}

.media-text {
    font-size: 1rem;
    line-height: 1.7;
    color: #555;
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.social-media-section {
    margin-top: 50px;
    padding-top: 40px;
    border-top: 2px solid rgba(255,255,255,0.7);
}

.social-title {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 25px;
    font-weight: 600;
}

.social-images {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin: 30px 0;
    flex-wrap: wrap;
}

.social-item {
    flex: 1;
    max-width: 300px;
    min-width: 250px;
}

.social-image {
    width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 2px solid white;
}

.social-image:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* ===== Section Specific ===== */
.cta-section {
    background: linear-gradient(135deg, #FF7F7F, #FF7FBF);
    color: white;
    padding: 80px 0;
    margin-top: 60px;
}

.cta-section .section-content {
    background-color: transparent;
    box-shadow: none;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    color: white;
}

.cta-subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: rgba(255,255,255,0.9);
}

/* ===== Footer ===== */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 40px 0;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.footer-link {
    color: #ecf0f1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: #3498db;
}

.footer-info {
    color: #95a5a6;
    font-size: 0.9rem;
}

/* ===== Screenshots ===== */
.screenshots-vertical {
    margin: 50px 0;
}

.screenshot-item {
    margin-bottom: 60px;
}

.screenshot-item:last-child {
    margin-bottom: 0;
}

.screenshot-content {
    display: flex;
    align-items: center;
    gap: 40px;
    max-width: 900px;
    margin: 0 auto;
}

.screenshot-content.reverse {
    flex-direction: row-reverse;
}

.screenshot-image {
    width: 700px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    flex-shrink: 0;
}

.screenshot-image:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.2);
}

.screenshot-description {
    flex: 1;
    text-align: left;
}

.screenshot-title {
    font-size: 1.4rem;
    color: #2c3e50;
    margin-bottom: 15px;
    font-weight: 600;
}

.screenshot-text {
    font-size: 1rem;
    line-height: 1.7;
    color: #555;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(231, 76, 60, 0.3);
}

.hero-problems {
    background-color: #f8f9fa;
    padding: 25px;
    border-radius: 15px;
    margin: 30px 0;
    border-left: 4px solid #e74c3c;
}

.problem-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.problem-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.problem-list li {
    padding: 8px 0;
    color: #555;
    position: relative;
    padding-left: 25px;
}

.problem-list li:before {
    content: "😔";
    position: absolute;
    left: 0;
}

/* ===== Utilities ===== */
.benefits-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #7f8c8d;
    max-width: 600px;
    margin: 0 auto;
}

.benefits-highlight {
    color: #2c3e50;
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .app-icon {
        width: 80px;
        height: 80px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    h2 {
        font-size: 2rem;
    }

    .section {
        padding: 40px 0;
    }

    .section-content {
        padding: 30px 20px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .steps-container {
        flex-direction: column;
        align-items: center;
    }

    .store-buttons {
        flex-direction: column;
        align-items: center;
    }

    .store-button {
        width: 100%;
        max-width: 250px;
    }

    .cta-title {
        font-size: 2rem;
    }

    .footer-links {
        flex-direction: column;
        gap: 15px;
    }

    .screenshot-content {
        flex-direction: column !important;
        text-align: center;
        gap: 25px;
    }

    .screenshot-content.reverse {
        flex-direction: column !important;
    }

    .screenshot-image {
        width: 250px;
    }

    .screenshot-description {
        text-align: center;
    }

    .screenshot-title {
        font-size: 1.2rem;
    }

    .screenshot-text {
        font-size: 0.9rem;
    }

    .hero-problems {
        padding: 20px;
    }

    .problem-list li {
        font-size: 0.9rem;
    }

    .media-images {
        flex-direction: column;
        align-items: center;
    }

    .media-item.main {
        max-width: 300px;
        margin-bottom: 20px;
    }

    .media-items-sub {
        max-width: 300px;
        width: 100%;
    }

    .media-section {
        padding: 40px 0;
    }

    .media-text {
        font-size: 0.9rem;
        padding: 0 10px;
    }

    .social-media-section {
        margin-top: 30px;
        padding-top: 30px;
    }

    .social-title {
        font-size: 1.3rem;
    }

    .social-images {
        flex-direction: column;
        align-items: center;
    }

    .social-item {
        max-width: 280px;
        width: 100%;
    }
}