:root {
    --bg-main: #fbfbfd;
    --bg-alt: #ffffff;
    --card-bg: #ffffff;
    --card-border: rgba(0, 0, 0, 0.05);
    --text-main: #1d1d1f;
    --text-muted: #86868b;
    --accent: #0071e3;
    --accent-hover: #0077ed;
    --accent-secondary: #0071e3;
    --accent-light: #e8f0fe;
    
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.02);
    --shadow-md: 0 4px 14px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 40px rgba(0,0,0,0.06);
    
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    font-size: 17px;
    line-height: 1.47059;
    letter-spacing: -0.022em;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    padding-bottom: 80px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 80px 0;
}

.bg-alt {
    background-color: var(--bg-alt);
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}

h1, h2, h3 {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
}

h1 {
    font-size: 3.2rem;
    font-weight: 700;
    line-height: 1.05;
    margin-bottom: 20px;
    letter-spacing: -0.035em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    text-align: center;
    letter-spacing: -0.02em;
}

h3 {
    font-size: 1.35rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 0.005em;
}

p {
    color: var(--text-muted);
    font-size: 1.1rem;
    letter-spacing: -0.015em;
}

.text-accent {
    color: var(--accent);
}

.text-muted {
    color: var(--text-muted);
}

.mt-4 { margin-top: 16px; }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: 980px; /* Apple-style pill button */
    font-weight: 400;
    font-size: 17px;
    letter-spacing: -0.022em;
    transition: var(--transition);
    cursor: pointer;
    text-align: center;
    border: none;
}

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

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

.btn-secondary {
    background-color: rgba(0, 113, 227, 0.08);
    color: var(--accent);
}

.btn-secondary:hover {
    background-color: rgba(0, 113, 227, 0.15);
}

.btn-full {
    width: 100%;
}

/* Header */
.header {
    padding: 14px 0;
    background: rgba(251, 251, 253, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 2;
}

.logo::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background-color: var(--accent);
}

.main-nav {
    display: none;
}

.auth-buttons {
    display: none;
}

/* Mobile Menu */
.burger-btn {
    display: flex;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 101;
    padding: 8px;
}

.burger-line {
    width: 24px;
    height: 2px;
    background-color: var(--text-main);
    transition: var(--transition);
}

body.nav-open .burger-line:first-child {
    transform: translateY(8px) rotate(45deg);
}

body.nav-open .burger-line:last-child {
    transform: translateY(-8px) rotate(-45deg);
}

body.nav-open {
    overflow: hidden;
}

body.nav-open .header {
    background: rgba(251, 251, 253, 0.98);
    height: 100vh;
}

body.nav-open .header-container {
    flex-wrap: wrap;
    align-items: flex-start;
}

body.nav-open .main-nav {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-top: 40px;
    gap: 24px;
    align-items: center;
}

body.nav-open .main-nav a {
    font-size: 24px;
    font-weight: 500;
    color: var(--text-main);
    text-decoration: none;
}

body.nav-open .auth-buttons {
    display: flex;
    width: 100%;
    margin-top: 40px;
    flex-direction: column;
    gap: 16px;
}

body.nav-open .auth-buttons a {
    width: 100%;
    text-align: center;
    justify-content: center;
    font-size: 18px;
    padding: 16px;
}

@media (min-width: 768px) {
    .burger-btn {
        display: none;
    }
    
    .main-nav {
        display: flex;
        align-items: center;
        gap: 32px;
    }

    .main-nav a {
        font-weight: 400;
        color: rgba(0, 0, 0, 0.8);
        transition: color 0.2s;
        font-size: 14px;
        letter-spacing: -0.01em;
    }

    .main-nav a:hover {
        color: var(--accent);
    }
    
    .auth-buttons {
        display: flex;
        align-items: center;
        gap: 16px;
    }
    
    .btn-text {
        font-weight: 400;
        color: rgba(0, 0, 0, 0.8);
        font-size: 14px;
        transition: color 0.2s;
    }
    .btn-text:hover {
        color: var(--accent);
    }
    
    .btn-outline {
        padding: 6px 14px;
        border-radius: 980px;
        border: 1px solid var(--text-muted);
        font-weight: 400;
        font-size: 14px;
        color: var(--text-main);
        transition: var(--transition);
        background: transparent;
    }
    .btn-outline:hover {
        border-color: var(--text-main);
    }
}

/* Hero Section */
.hero {
    padding: 120px 0 140px;
    background: linear-gradient(120deg, #fbfbfd 0%, rgba(41, 151, 255, 0.08) 50%, #fbfbfd 100%);
    background-size: 200% 200%;
    animation: gentleAurora 12s ease-in-out infinite alternate;
    position: relative;
    overflow: hidden;
}

@keyframes gentleAurora {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.hero-container {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-content .subtitle {
    font-size: 1.35rem;
    margin-bottom: 32px;
    color: #47474a;
    line-height: 1.4;
    font-weight: 500;
    max-width: 700px;
}

.hero-bullets {
    margin-bottom: 40px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
    max-width: 800px;
}

.hero-bullets li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-main);
    font-weight: 500;
    font-size: 1.05rem;
}

.hero-bullets svg {
    color: var(--accent);
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: 16px;
    width: 100%;
    max-width: 400px;
}

/* Use Cases */
.grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.card {
    background: #f5f5f7;
    border: none;
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    transition: var(--transition);
}

.card:hover {
    transform: scale(1.01);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #fff;
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

/* Features */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.feature-blocks {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.feature-block {
    display: flex;
    flex-direction: column;
    gap: 24px;
    background: #f5f5f7;
    border-radius: var(--radius-lg);
    padding: 32px;
    align-items: center;
}

.feature-text {
    flex: 1;
    text-align: center;
}

.feature-text h3 {
    font-size: 1.7rem;
    margin-bottom: 16px;
}

.feature-image-wrapper {
    flex: 1;
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.feature-image-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.wide-aspect {
    aspect-ratio: 16 / 9;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
    margin-top: 40px;
}

.feature-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    background: #f5f5f7;
    border: none;
    border-radius: var(--radius-md);
    padding: 24px;
}

.feature-number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.feature-item-content {
    flex: 1;
    min-width: 0;
    text-align: left;
}

.feature-item h3 {
    margin-bottom: 6px;
    font-size: 1.15rem;
}

.feature-item p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* How to connect */
.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 40px;
}

.step-card {
    text-align: center;
    background: #fff;
    padding: 32px 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.step-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #f5f5f7;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--accent);
    margin: 0 auto 20px;
}

.pro-tip {
    background: #f5f5f7;
    padding: 24px 32px;
    border-radius: var(--radius-md);
    margin-bottom: 40px;
    text-align: center;
}

.pro-tip strong {
    color: var(--text-main);
    display: block;
    margin-bottom: 8px;
    font-size: 1.1rem;
}

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

/* Trial Block */
.trial-block {
    background-color: var(--bg-alt);
}

.trial-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
}

.trial-content {
    max-width: 500px;
}

.trial-content h2 {
    text-align: left;
}

.trial-bullets {
    display: flex;
    flex-direction: column;
    gap: 14px;
    margin: 24px 0;
}

.trial-bullets li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 400;
    color: var(--text-main);
}

.trial-bullets svg {
    color: var(--accent);
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.trial-image {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* Pricing */
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.pricing-card {
    background: #f5f5f7;
    border: none;
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.pricing-card.popular {
    background: #ffffff;
    box-shadow: var(--shadow-md);
    transform: scale(1.02);
}

.pricing-card.highlighted {
    background: #ffffff;
    box-shadow: var(--shadow-md);
}

.badge {
    position: absolute;
    top: -12px;
    right: 24px;
    padding: 4px 12px;
    border-radius: 980px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #fff;
    letter-spacing: 0.02em;
}

.badge-popular {
    background-color: var(--accent);
}

.badge-highlight {
    background-color: var(--text-main);
}

.price {
    font-size: 2.8rem;
    font-weight: 700;
    margin: 12px 0 4px;
    color: var(--text-main);
    letter-spacing: -0.03em;
}

.duration {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.pricing-features {
    flex-grow: 1;
    margin-bottom: 32px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.pricing-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 0.95rem;
    color: var(--text-main);
}

.pricing-features svg {
    color: var(--text-main);
    flex-shrink: 0;
    margin-top: 2px;
}

/* Devices */
.devices-layout {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.devices-text h2 {
    text-align: left;
}

.devices-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.device-card {
    background: #f5f5f7;
    border: none;
    border-radius: var(--radius-lg);
    padding: 24px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--text-main);
}

.device-card svg {
    color: var(--text-main);
    width: 40px;
    height: 40px;
}

/* Comparison */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.comparison-col {
    background: #f5f5f7;
    border: none;
    border-radius: var(--radius-lg);
    padding: 32px 24px;
}

.comparison-col h3 {
    text-align: center;
    margin-bottom: 24px;
    font-size: 1.35rem;
}

.comparison-col ul {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.comparison-col li {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    font-size: 1rem;
}

.comparison-col svg {
    flex-shrink: 0;
    margin-top: 2px;
    width: 20px;
    height: 20px;
}

.comparison-col.negative li {
    color: var(--text-muted);
}
.comparison-col.negative svg {
    color: #ef4444;
}

.comparison-col.positive {
    background: #ffffff;
    box-shadow: var(--shadow-md);
}
.comparison-col.positive h3 {
    color: var(--text-main);
}
.comparison-col.positive li {
    color: var(--text-main);
}
.comparison-col.positive svg {
    color: var(--accent);
}

/* FAQ */
.faq-container {
    max-width: 800px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background: rgba(0,0,0,0.05);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.faq-item {
    background: #fff;
    transition: var(--transition);
}

.faq-item summary {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1.05rem;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-main);
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary svg {
    transition: transform 0.3s ease;
    color: var(--text-muted);
}

.faq-item[open] summary svg {
    transform: rotate(180deg);
}

.faq-content {
    padding: 0 24px 20px;
    color: var(--text-muted);
    font-size: 1rem;
    line-height: 1.6;
}

/* Final CTA */
.final-cta {
    background: #f5f5f7;
    text-align: center;
    border-radius: var(--radius-lg);
    margin: 0 24px 60px;
    padding: 60px 24px;
}

.final-cta-container {
    max-width: 600px;
    margin: 0 auto;
}

.final-cta h2 {
    margin-bottom: 16px;
}

.final-cta p {
    color: var(--text-muted);
    margin-bottom: 32px;
}

.cta-subtitle {
    margin-top: 16px;
    font-size: 0.9rem !important;
}

/* Footer */
.footer {
    padding: 40px 0;
    background: #fff;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    margin-bottom: 32px;
}

.footer-links a {
    color: var(--text-muted);
    transition: color 0.2s;
    font-weight: 400;
    font-size: 15px;
}

.footer-links a:hover {
    color: var(--text-main);
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
    padding-top: 24px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

/* Sticky CTA Mobile */
.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 16px 24px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(0,0,0,0.05);
    z-index: 100;
    display: block;
}

/* Responsive Styles */
@media (min-width: 768px) {
    body {
        padding-bottom: 0;
    }
    
    .sticky-cta {
        display: none;
    }
    
    .hero {
        padding: 160px 0 200px;
    }
    
    .hero-actions {
        flex-direction: row;
        max-width: none;
        justify-content: center;
    }
    
    .feature-blocks {
        gap: 60px;
    }
    
    .feature-block {
        flex-direction: row;
        padding: 48px;
        text-align: left;
        gap: 60px;
    }
    
    .feature-block.feature-reverse {
        flex-direction: row-reverse;
    }
    
    .feature-text {
        text-align: left;
        padding: 20px 0;
    }
    
    .feature-text h3 {
        font-size: 2.2rem;
    }
    
    .grid.cards-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .trial-container {
        grid-template-columns: 1fr 1fr;
    }
    
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .devices-layout {
        flex-direction: row;
        align-items: center;
    }
    
    .devices-text, .devices-grid {
        flex: 1;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .final-cta {
        margin: 0 auto 80px;
        max-width: 1100px;
        width: calc(100% - 48px);
    }
}

@media (min-width: 1024px) {
    .grid.cards-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .pricing-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}