:root {
    --accent-blue: #3854CF;
    --accent-blue-dark: #082AA8;
    --accent-gradient: linear-gradient(135deg, #3854CF 0%, #082AA8 100%);

    --text-primary: #101114;
    --text-secondary: #5f6470;
    --text-tertiary: #8e93a1;
    --bg-primary: #ffffff;
    --bg-secondary: #f6f7fb;
    --bg-elevated: #ffffff;
    --border-color: #e3e7f0;

    --dark-text-primary: #f5f7ff;
    --dark-text-secondary: #c0c6d7;
    --dark-bg-primary: #06080d;
    --dark-bg-secondary: #111420;
    --dark-bg-elevated: #151a28;

    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.25rem;

    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --radius-full: 9999px;

    --shadow-sm: 0 2px 10px rgba(12, 20, 40, 0.05);
    --shadow-md: 0 8px 28px rgba(12, 20, 40, 0.08);

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    background: var(--bg-primary);
    line-height: 1.65;
}

h1, h2, h3, h4 {
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--font-size-5xl);
    font-weight: 750;
}

h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
}

h3 {
    font-size: var(--font-size-2xl);
    font-weight: 650;
}

p {
    color: var(--text-secondary);
}

a {
    color: var(--accent-blue);
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-blue-dark);
}

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 0.875rem 0;
    background: rgba(255, 255, 255, 0.82);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border-color);
}

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

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.logo img {
    width: 30px;
    height: 30px;
    border-radius: 0.45rem;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 1.3rem;
}

.nav-link {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 550;
}

.nav-link:hover {
    color: var(--text-primary);
}

.menu-toggle {
    display: none;
    width: 24px;
    height: 24px;
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-around;
}

.menu-toggle span {
    width: 100%;
    height: 2px;
    border-radius: var(--radius-full);
    background: var(--text-primary);
    transition: all 0.25s ease;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    font-weight: 650;
    padding: 0.72rem 1.2rem;
    text-align: center;
    transition: all var(--transition-base);
}

.btn-primary {
    color: #fff !important;
    background: var(--accent-gradient);
}

.btn-primary:hover {
    color: #fff !important;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    background: var(--bg-elevated);
}

.hero {
    padding: calc(var(--spacing-xl) - 1rem) 0 var(--spacing-lg);
    background: radial-gradient(circle at top right, #eef2ff 0%, transparent 35%), var(--bg-primary);
}

.hero-content {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
}

.eyebrow {
    margin-bottom: 0.65rem;
    font-size: var(--font-size-sm);
    font-weight: 650;
    color: var(--accent-blue);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.hero-text h1 {
    margin-bottom: 1rem;
}

.hero-text p {
    margin-bottom: 1.1rem;
    font-size: var(--font-size-xl);
    max-width: 560px;
}

.hero-points {
    margin: 0 0 1.1rem;
    padding-left: 1.2rem;
    list-style: disc;
}

.hero-points li {
    margin-bottom: 0.35rem;
    color: var(--text-primary);
    font-weight: 520;
}

.hero-trust {
    margin-top: 0.7rem;
    margin-bottom: 0;
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

.hero-cta {
    display: flex;
    justify-content: flex-start;
}

.app-store-badge {
    height: 58px;
}

.hero-image {
    display: flex;
    justify-content: center;
}

.iphone-screenshot {
    width: 100%;
    max-width: 300px;
    height: auto;
    display: block;
}

.proof {
    padding: 0 0 var(--spacing-lg);
}

.proof-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--spacing-sm);
}

.proof-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.2rem;
    text-align: center;
}

.proof-item strong {
    display: block;
    font-size: var(--font-size-2xl);
    color: var(--text-primary);
}

.proof-item span {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.features,
.screenshots,
.mini-faq {
    padding: var(--spacing-xl) 0;
}

.screenshots {
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title p {
    max-width: 650px;
    margin: 0.75rem auto 0;
    font-size: var(--font-size-lg);
}

.features-grid,
.pricing-grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card {
    padding: 1.5rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.feature-card:hover {
    transform: translateY(-2px);
    transition: transform var(--transition-base);
}

.feature-card-premium {
    border-color: #c9d5ff;
    background: linear-gradient(180deg, #f8faff 0%, #f2f5ff 100%);
}

.feature-icon {
    width: 44px;
    height: 44px;
    border-radius: 0.7rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.9rem;
    background: var(--accent-gradient);
}

.feature-icon img {
    width: 22px;
    height: 22px;
    filter: brightness(0) invert(1);
}

.feature-card h3 {
    margin-bottom: 0.6rem;
}

.feature-list {
    list-style: disc;
    margin-left: 1.1rem;
}

.feature-list li {
    margin-bottom: 0.45rem;
    color: var(--text-secondary);
}

.screenshots-gallery {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    width: 100%;
    margin: 0;
    padding: 0 var(--spacing-sm) var(--spacing-xs);
    scroll-snap-type: x mandatory;
    scroll-padding-left: var(--spacing-sm);
    scroll-padding-right: var(--spacing-sm);
    box-sizing: border-box;
}

.screenshots-gallery::-webkit-scrollbar {
    height: 7px;
}

.screenshots-gallery::-webkit-scrollbar-thumb {
    background: #b6bdd3;
    border-radius: var(--radius-full);
}

.screenshot-item {
    flex: 0 0 auto;
    width: 260px;
    scroll-snap-align: start;
}

.screenshot-caption {
    margin-top: 0.55rem;
    text-align: center;
    color: var(--text-primary);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.faq-list {
    max-width: 840px;
    margin: 0 auto var(--spacing-sm);
}

.faq-item {
    margin-bottom: 0.9rem;
    padding: 1.1rem 1.2rem;
    border: 1px solid var(--border-color);
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
}

.faq-question {
    margin-bottom: 0.35rem;
    color: var(--text-primary);
    font-weight: 650;
}

.faq-answer {
    color: var(--text-secondary);
}

.cta {
    padding: var(--spacing-xl) 0;
    text-align: center;
    color: #fff;
    background: var(--accent-gradient);
}

.cta h2 {
    color: #fff;
}

.cta p {
    margin: 0.75rem auto 1.3rem;
    max-width: 620px;
    color: rgba(255, 255, 255, 0.92);
    font-size: var(--font-size-lg);
}

.cta .btn-primary {
    background: #fff;
    color: var(--accent-blue) !important;
}

.cta .btn-primary:hover {
    transform: translateY(-1px);
}

.footer {
    padding: var(--spacing-lg) 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-section h4 {
    margin-bottom: 0.55rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.footer-link {
    color: var(--text-secondary);
}

.footer-link:hover {
    color: var(--text-primary);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    text-align: center;
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
}

.page-content {
    max-width: 860px;
    margin: 0 auto;
    padding: var(--spacing-lg) 0;
}

.page-content h1 {
    margin-bottom: 1rem;
}

.page-content h2 {
    margin-top: 1.8rem;
    margin-bottom: 0.65rem;
    font-size: var(--font-size-2xl);
}

.page-content h3 {
    margin-top: 1.15rem;
    margin-bottom: 0.45rem;
}

.page-content p,
.page-content ul,
.page-content ol {
    margin-bottom: 0.9rem;
}

.page-content ul,
.page-content ol {
    margin-left: 1.2rem;
}

.page-content li {
    margin-bottom: 0.35rem;
    color: var(--text-secondary);
}

.support-cards {
    margin-top: 1.25rem;
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.mobile-sticky-cta {
    position: fixed;
    left: 50%;
    bottom: calc(-72px - env(safe-area-inset-bottom));
    transform: translateX(-50%);
    z-index: 1500;
    min-width: 180px;
    text-align: center;
    padding: 0.8rem 1.2rem;
    color: #fff !important;
    border-radius: var(--radius-full);
    background: var(--accent-gradient);
    box-shadow: 0 10px 24px rgba(11, 32, 109, 0.35);
    opacity: 0;
    pointer-events: none;
    transition: bottom var(--transition-base), opacity var(--transition-base);
}

.mobile-sticky-cta.show {
    bottom: calc(1rem + env(safe-area-inset-bottom));
    opacity: 1;
    pointer-events: auto;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(18px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@media (min-width: 769px) {
    .mobile-sticky-cta {
        display: none;
    }
}

@media (max-width: 900px) {
    :root {
        --font-size-5xl: 2.35rem;
        --font-size-4xl: 1.95rem;
        --spacing-xl: 4.25rem;
        --spacing-lg: 2.8rem;
    }

    .hero-content,
    .features-grid,
    .pricing-grid,
    .footer-content,
    .support-cards {
        grid-template-columns: 1fr;
    }

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

    .hero {
        padding-top: var(--spacing-lg);
    }

    .hero-text,
    .section-title {
        text-align: center;
    }

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-points {
        text-align: center;
        list-style-position: inside;
        max-width: 420px;
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        margin-top: 0.5rem;
        border: 1px solid var(--border-color);
        border-radius: var(--radius-lg);
        background: rgba(255, 255, 255, 0.98);
        overflow: hidden;
        max-height: 0;
        opacity: 0;
        transition: max-height 0.25s ease, opacity 0.25s ease, padding 0.25s ease;
        padding: 0;
    }

    .nav.active {
        opacity: 1;
        max-height: 420px;
        padding: 0.75rem 1rem 1rem;
    }

    .nav-links {
        width: 100%;
        flex-direction: column;
        gap: 0.6rem;
        margin-bottom: 0.8rem;
    }

    .nav-link {
        display: block;
    }

    .nav .btn {
        width: 100%;
    }

    .container {
        padding: 0 1rem;
    }

    .screenshots-gallery {
        gap: var(--spacing-sm);
        padding-left: var(--spacing-xs);
        padding-right: var(--spacing-xs);
        scroll-padding-left: var(--spacing-xs);
        scroll-padding-right: var(--spacing-xs);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-5xl: 2rem;
        --font-size-xl: 1.12rem;
    }

    .logo {
        font-size: 1.1rem;
    }

    .logo img {
        width: 24px;
        height: 24px;
    }

    .app-store-badge {
        height: 52px;
    }
}

@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: var(--dark-text-primary);
        --text-secondary: var(--dark-text-secondary);
        --text-tertiary: #959db4;
        --bg-primary: var(--dark-bg-primary);
        --bg-secondary: var(--dark-bg-secondary);
        --bg-elevated: var(--dark-bg-elevated);
        --border-color: #283044;
    }

    .header {
        background: rgba(6, 8, 13, 0.86);
    }

    .hero {
        background: radial-gradient(circle at top right, rgba(63, 93, 206, 0.14) 0%, transparent 40%), var(--bg-primary);
    }

    .feature-card-premium {
        background: linear-gradient(180deg, rgba(30, 44, 84, 0.56) 0%, rgba(23, 33, 63, 0.72) 100%);
        border-color: #3f4f82;
    }

    .cta .btn-primary {
        background: #f4f7ff;
        color: #1f3bb3 !important;
    }

    @media (max-width: 768px) {
        .nav {
            background: rgba(10, 13, 22, 0.98);
        }
    }
}