:root {
    --color-bg: #ffffff;
    --color-fg: #000000;
    --color-border: #e5e5e5;
    --color-muted: #737373;
    --color-subtle: #fafafa;
    --color-accent: #2563eb;
    --color-accent-hover: #1d4ed8;
    --color-accent-light: #eff6ff;
    --color-accent-fg: #ffffff;
    --color-success: #10b981;
    --color-success-light: #ecfdf5;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 12px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.04), 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.04), 0 4px 8px rgba(0, 0, 0, 0.02);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-fg);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 32px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: transform 0.3s ease;
}

.nav-container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 32px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-size: 15px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 14px;
    color: var(--color-muted);
    text-decoration: none;
    transition: color 0.2s;
}

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

.nav-cta {
    font-size: 14px;
    color: var(--color-fg);
    text-decoration: none;
    padding: 8px 16px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    transition: all 0.2s;
}

.nav-cta:hover {
    background: var(--color-subtle);
}

/* Hero Section */
.hero {
    padding: 160px 0 120px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--color-success-light);
    border: 1px solid var(--color-success);
    border-radius: 20px;
    font-size: 13px;
    color: var(--color-success);
    margin-bottom: 24px;
    font-weight: 500;
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-success);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    font-size: 64px;
    font-weight: 600;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 24px;
    max-width: 800px;
}

.hero-description {
    font-size: 20px;
    color: var(--color-muted);
    line-height: 1.6;
    margin-bottom: 40px;
    max-width: 640px;
}

.hero-cta {
    display: flex;
    gap: 12px;
    margin-bottom: 80px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 10px;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-fg);
    border: 1px solid var(--color-border);
}

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-fg);
    justify-content: center;
}

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

.hero-stats {
    display: grid;
    grid-template-columns: auto 1px auto 1px auto;
    gap: 48px;
    align-items: center;
    padding: 32px 0;
    border-top: 1px solid var(--color-border);
}

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

.stat-value {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
    color: var(--color-accent);
}

.stat-label {
    font-size: 14px;
    color: var(--color-muted);
}

.stat-divider {
    width: 1px;
    height: 48px;
    background: var(--color-border);
}

/* Hero Visual */
.hero-visual {
    max-width: 900px;
    margin: 80px auto 0;
    position: relative;
    z-index: 1;
}

.product-window {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--color-bg);
    position: relative;
    z-index: 1;
}

.window-header {
    height: 44px;
    background: var(--color-subtle);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    padding: 0 16px;
    gap: 12px;
}

.window-dots {
    display: flex;
    gap: 8px;
}

.window-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-border);
}

.window-dots span:first-child {
    background: #ff5f56;
}

.window-dots span:nth-child(2) {
    background: #ffbd2e;
}

.window-dots span:nth-child(3) {
    background: #27c93f;
}

.window-title {
    font-size: 13px;
    color: var(--color-muted);
    font-weight: 500;
}

.window-content {
    padding: 48px;
    background: linear-gradient(to bottom, var(--color-bg), var(--color-subtle));
}

.timer-interface {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.timer-display {
    text-align: center;
    padding: 48px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
}

.timer-value {
    font-size: 72px;
    font-weight: 600;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
    color: var(--color-accent);
}

.timer-controls {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-top: 24px;
}

.control-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--color-accent);
}

.control-btn:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent);
}

.agenda-preview {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.agenda-item {
    padding: 16px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    display: flex;
    gap: 12px;
    align-items: center;
    transition: all 0.2s;
}

.agenda-item.active {
    border-color: var(--color-accent);
    background: var(--color-accent-light);
}

.item-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border);
    flex-shrink: 0;
}

.agenda-item.active .item-indicator {
    background: var(--color-accent);
}

.item-content {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.item-title {
    font-size: 14px;
    font-weight: 500;
}

.agenda-item.active .item-title {
    color: var(--color-accent);
}

.item-time {
    font-size: 13px;
    color: var(--color-muted);
    font-variant-numeric: tabular-nums;
}

/* Sections */
section {
    padding: 120px 0;
    position: relative;
    z-index: 10;
}

.section-label {
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 16px;
}

.section-title {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 64px;
}

/* Problem Section */
.problem {
    background: var(--color-subtle);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    z-index: 10;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 64px;
}

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

.problem-metric {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    color: var(--color-accent);
}

.problem-item p {
    font-size: 15px;
    color: var(--color-muted);
    line-height: 1.6;
}

/* Features */
.features {
    position: relative;
    z-index: 10;
}

.feature-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 32px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all 0.3s;
    background: var(--color-bg);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: var(--color-accent);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    background: var(--color-accent-light);
    border: 1px solid var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--color-accent);
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 15px;
    color: var(--color-muted);
    line-height: 1.6;
}

/* Use Cases */
.use-cases {
    position: relative;
    z-index: 10;
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.use-case {
    padding: 40px;
    background: var(--color-subtle);
    border-radius: var(--radius);
    border-left: 3px solid var(--color-accent);
    transition: all 0.3s;
}

.use-case:hover {
    background: var(--color-accent-light);
    transform: translateX(4px);
}

.use-case-label {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.use-case h3 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
    line-height: 1.3;
}

.use-case p {
    font-size: 15px;
    color: var(--color-muted);
    line-height: 1.6;
}

/* Testimonials */
.testimonials {
    background: var(--color-subtle);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    position: relative;
    z-index: 10;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.testimonial {
    padding: 32px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: all 0.3s;
}

.testimonial:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.testimonial-content p {
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 24px;
}

.testimonial-author {
    display: flex;
    gap: 12px;
    align-items: center;
}

.author-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-accent-fg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    flex-shrink: 0;
}

.author-name {
    font-size: 14px;
    font-weight: 500;
}

.author-role {
    font-size: 13px;
    color: var(--color-muted);
}

/* Pricing */
.pricing {
    position: relative;
    z-index: 10;
}

.pricing-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--color-muted);
    margin-bottom: 64px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card {
    padding: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-bg);
    position: relative;
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--color-accent);
    border-width: 2px;
}

.featured-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: var(--color-accent-fg);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.price {
    margin-bottom: 12px;
}

.price-amount {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.price-period {
    font-size: 16px;
    color: var(--color-muted);
    margin-left: 8px;
}

.price-description {
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: 32px;
}

.pricing-features {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
    flex: 1;
}

.feature-item {
    display: flex;
    gap: 12px;
    align-items: center;
    font-size: 14px;
}

.feature-item svg {
    flex-shrink: 0;
    stroke: var(--color-success);
}

/* FAQ */
.faq {
    position: relative;
    z-index: 10;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 48px;
}

.faq-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.faq-item p {
    font-size: 15px;
    color: var(--color-muted);
    line-height: 1.6;
}

/* CTA */
.cta {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    color: var(--color-accent-fg);
    text-align: center;
    position: relative;
    z-index: 10;
}

.cta h2 {
    font-size: 48px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.cta p {
    font-size: 20px;
    opacity: 0.9;
    margin-bottom: 32px;
}

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

.cta .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
}

.cta-features {
    margin-top: 24px;
    font-size: 14px;
    opacity: 0.9;
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    border-top: 1px solid var(--color-border);
    position: relative;
    z-index: 10;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 64px;
    margin-bottom: 48px;
}

.footer-brand {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 12px;
}

.footer-col p {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.6;
}

.footer-col h4 {
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: var(--color-muted);
    text-decoration: none;
    margin-bottom: 12px;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: var(--color-accent);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-muted);
}

/* Responsive */
@media (max-width: 968px) {
    .container {
        padding: 0 24px;
    }

    .hero-title {
        font-size: 48px;
    }

    .hero-description {
        font-size: 18px;
    }

    .section-title {
        font-size: 36px;
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .stat-divider {
        display: none;
    }

    .problem-grid,
    .feature-list,
    .use-case-grid,
    .testimonial-grid,
    .pricing-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .window-content {
        padding: 24px;
    }

    .timer-value {
        font-size: 48px;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 120px 0 80px;
    }

    .hero-title {
        font-size: 36px;
    }

    .section-title {
        font-size: 28px;
    }

    .nav-links {
        gap: 16px;
    }

    .nav-link {
        display: none;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .cta h2 {
        font-size: 32px;
    }

    .cta-features {
        flex-direction: column;
        gap: 8px;
    }
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge,
.hero-title,
.hero-description,
.hero-cta {
    animation: fadeIn 0.6s ease-out backwards;
}

.hero-title {
    animation-delay: 0.1s;
}

.hero-description {
    animation-delay: 0.2s;
}

.hero-cta {
    animation-delay: 0.3s;
}