:root {
    --primary-color: #0071e3;
    /* Apple Blue */
    --hover-color: #0077ed;
    --background-color: #ffffff;
    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --section-bg: #f5f5f7;
    --card-bg: #ffffff;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--background-color);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    height: 44px;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo-img {
    height: 28px;
    width: auto;
    border-radius: 6px;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links a {
    font-size: 12px;
    color: var(--text-primary);
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.nav-links a:hover {
    opacity: 1;
}

.lang-selector select {
    font-size: 12px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    font-family: inherit;
    opacity: 0.8;
}

/* Hero Section */
.hero {
    padding-top: 120px;
    padding-bottom: 80px;
    text-align: center;
}

.hero h1 {
    font-size: 56px;
    line-height: 1.07143;
    letter-spacing: -0.005em;
    font-weight: 700;
    margin-bottom: 16px;
}

.hero p {
    font-size: 24px;
    line-height: 1.25;
    font-weight: 400;
    color: var(--text-secondary);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-group {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 980px;
    font-size: 17px;
    line-height: 1.17648;
    font-weight: 400;
    text-decoration: none;
    transition: all 0.2s ease;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--hover-color);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-color);
    box-shadow: inset 0 0 0 1px var(--primary-color);
}

.btn-secondary:hover {
    background-color: rgba(0, 113, 227, 0.1);
}

/* Mockup Placeholder */
.hero-image-placeholder {
    margin-top: 40px;
}

.mockup {
    width: 60%;
    margin: 0 auto;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #e0e0e0 0%, #f5f5f7 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    color: var(--text-secondary);
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: var(--section-bg);
}

.section-title {
    text-align: center;
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 60px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-card {
    text-align: center;
    padding: 30px;
}

.feature-card .icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 17px;
}

/* Download Section */
.download {
    padding: 100px 0;
    text-align: center;
}

.section-desc {
    font-size: 21px;
    color: var(--text-secondary);
    margin-bottom: 50px;
}

.download-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.download-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 18px;
    width: 160px;
    text-decoration: none;
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.download-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
}

.platform-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.platform-name {
    font-weight: 500;
}

.platform-requirement {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 4px;
    opacity: 0.8;
}

/* Footer */
footer {
    padding: 40px 0;
    background-color: var(--section-bg);
    font-size: 12px;
    color: var(--text-secondary);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
}

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

.footer-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.footer-links a {
    color: var(--text-primary);
    text-decoration: none;
    padding-left: 20px;
    border-left: 1px solid #d2d2d7;
}

.footer-links a:hover {
    text-decoration: underline;
}

.footer-social {
    display: flex;
    align-items: center;
    gap: 12px;
}

.social-icons {
    display: flex;
    gap: 8px;
}

.social-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.social-icon:hover {
    background-color: var(--accent-light);
    color: var(--accent-color);
    transform: translateY(-2px);
}

.social-icon svg {
    display: block;
}

/* Privacy Page */
.privacy-section {
    padding: 120px 0 60px;
    background-color: var(--bg-primary);
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.last-updated {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.policy-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-top: 30px;
    margin-bottom: 15px;
}

.policy-content p,
.policy-content li {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.policy-content ul {
    margin-left: 20px;
    margin-bottom: 20px;
}

.highlight-box {
    background-color: var(--bg-secondary);
    padding: 15px 20px;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    margin: 20px 0;
    color: var(--text-primary) !important;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 40px;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 20px;
    }
}

/* Scenarios Section */
.scenarios {
    padding: 100px 0;
    background-color: var(--background-color);
    /* Similar to Features but maybe swap if features is gray */
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.scenario-card {
    background: var(--section-bg);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

.scenario-card:hover {
    transform: translateY(-5px);
}

.scenario-card .emoji {
    font-size: 48px;
    margin-bottom: 20px;
    display: block;
}

.scenario-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.scenario-card p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Hero Scenario Tags */
.hero-scenarios {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 40px;
}

.scenario-tag {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: background-color 0.2s;
}

.scenario-tag:hover {
    background-color: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .scenario-grid {
        grid-template-columns: 1fr;
    }

    .hero-scenarios {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
}

/* Support Page */
.support-page {
    padding-top: 44px;
    /* Navbar height */
}

.support-hero {
    background-color: var(--section-bg);
    padding: 80px 0 60px;
    text-align: center;
}

.support-hero h1 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.support-hero p {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.support-categories {
    padding: 60px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.support-category-grid {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.support-cat-card {
    background: var(--card-bg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: 12px;
    padding: 16px 24px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
    color: var(--text-secondary);
}

.support-cat-card:hover {
    background-color: var(--section-bg);
    color: var(--text-primary);
}

.support-cat-card.active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(0, 113, 227, 0.2);
}

.support-cat-card .icon {
    font-size: 20px;
}

.support-guides {
    padding: 60px 0 100px;
}

.guide-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.guide-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.guide-item {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    max-width: 800px;
    margin: 0 auto;
}

.guide-item h2 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.guide-item p {
    font-size: 17px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.guide-item .steps {
    background-color: var(--section-bg);
    padding: 30px;
    border-radius: 12px;
}

.guide-item .steps p {
    margin-bottom: 12px;
    font-size: 16px;
}

.guide-item .steps p:last-child {
    margin-bottom: 0;
}

.guide-item strong {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .support-hero h1 {
        font-size: 32px;
    }

    .support-hero p {
        font-size: 17px;
    }

    .guide-item {
        padding: 24px;
    }

    .guide-item h2 {
        font-size: 22px;
    }
}