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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Header & Navigation */
header {
    background: #fff;
    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 {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.8rem;
    font-weight: bold;
    color: #5A73FF;
}

.logo-icon {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

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

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #5A73FF;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: all 0.3s;
    border-radius: 3px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

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

/* Page Header */
.page-header {
    background: linear-gradient(135deg, #5A73FF 0%, #4158D0 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.last-updated {
    font-size: 1rem;
    margin-top: 0.5rem;
    opacity: 0.8;
}

/* Privacy Content */
.privacy-content {
    padding: 80px 0;
    background: #f8f9fa;
}

.privacy-intro {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    margin-bottom: 3rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.privacy-intro p {
    font-size: 1.1rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.privacy-intro p:last-child {
    margin-bottom: 0;
}

.privacy-section {
    background: white;
    padding: 3rem;
    border-radius: 15px;
    margin-bottom: 2rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.privacy-section h2 {
    font-size: 2rem;
    color: #5A73FF;
    margin-bottom: 1.5rem;
    border-bottom: 3px solid #5A73FF;
    padding-bottom: 0.5rem;
}

.privacy-section > p {
    font-size: 1.05rem;
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* Notice Box */
.notice-box {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 5px;
}

.notice-box strong {
    color: #856404;
    display: block;
    margin-bottom: 0.5rem;
}

/* Info Items */
.info-item {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e0e0e0;
}

.info-item:last-child {
    border-bottom: none;
}

.info-item h3 {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 1rem;
}

.info-item p {
    font-size: 1.05rem;
    color: #666;
    line-height: 1.8;
}

/* Purpose List */
.purpose-list {
    list-style: none;
    margin: 1.5rem 0;
}

.purpose-list li {
    padding-left: 2rem;
    margin-bottom: 1rem;
    position: relative;
    font-size: 1.05rem;
    color: #666;
    line-height: 1.8;
}

.purpose-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #5A73FF;
    font-weight: bold;
    font-size: 1.2rem;
}

/* Security Grid */
.security-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.security-card {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    border: 2px solid #e0e0e0;
    transition: transform 0.3s, box-shadow 0.3s;
}

.security-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(90, 115, 255, 0.2);
    border-color: #5A73FF;
}

.security-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.security-card h3 {
    font-size: 1.2rem;
    color: #5A73FF;
    margin-bottom: 1rem;
}

.security-card p {
    font-size: 1rem;
    color: #666;
    line-height: 1.6;
}

.security-note {
    font-style: italic;
    color: #888;
    margin-top: 2rem;
}

/* Sharing List */
.sharing-list {
    list-style: none;
    margin: 1.5rem 0;
}

.sharing-list li {
    padding: 1rem;
    margin-bottom: 1rem;
    background: #f8f9fa;
    border-left: 4px solid #5A73FF;
    border-radius: 5px;
    font-size: 1.05rem;
    color: #666;
    line-height: 1.8;
}

.sharing-list strong {
    color: #5A73FF;
    display: block;
    margin-bottom: 0.3rem;
}

/* Contact Info Box */
.contact-info-box {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 10px;
    border-left: 4px solid #5A73FF;
    margin-top: 1.5rem;
}

.contact-info-box p {
    margin-bottom: 1rem;
    font-size: 1.05rem;
    color: #666;
}

.contact-info-box p:last-child {
    margin-bottom: 0;
}

.contact-info-box a {
    color: #5A73FF;
    text-decoration: none;
    font-weight: 600;
}

.contact-info-box a:hover {
    text-decoration: underline;
}

/* Links */
.privacy-section a {
    color: #5A73FF;
    text-decoration: none;
    font-weight: 600;
}

.privacy-section a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    background: #1a1a1a;
    color: white;
    padding: 50px 0 20px;
}

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

.footer-section h3 {
    color: #5A73FF;
    margin-bottom: 1rem;
}

.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: #5A73FF;
}

.footer-section p {
    color: #ccc;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    color: #888;
}

/* Responsive Design */
@media (max-width: 968px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: left 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.1);
        padding: 2rem 0;
        gap: 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 1rem 0;
    }

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

@media (max-width: 768px) {
    .page-header {
        padding: 60px 0;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .page-header p {
        font-size: 1rem;
    }

    .privacy-content {
        padding: 50px 0;
    }

    .privacy-intro,
    .privacy-section {
        padding: 2rem 1.5rem;
    }

    .privacy-section h2 {
        font-size: 1.6rem;
    }

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

@media (max-width: 480px) {
    .logo {
        font-size: 1.5rem;
    }

    .logo-icon {
        width: 35px;
        height: 35px;
    }

    .page-header h1 {
        font-size: 1.5rem;
    }

    .privacy-intro,
    .privacy-section {
        padding: 1.5rem 1rem;
    }

    .privacy-section h2 {
        font-size: 1.4rem;
    }

    .info-item h3 {
        font-size: 1.1rem;
    }

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