:root {
    /* Color Palette - Premium Light */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #ffffff;
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    
    --accent-primary: #2563eb;
    --accent-hover: #1d4ed8;
    --accent-glow: rgba(37, 99, 235, 0.15);
    
    --border-color: #e2e8f0;
    
    --warning-bg: #fffbeb;
    --warning-text: #b45309;
    --warning-border: #fef3c7;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Metrics */
    --container-max: 1200px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 24px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* HEADER */
.site-header {
    padding: 24px 0;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.contact-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 6px 16px 6px 6px;
    border-radius: var(--radius-full);
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.contact-link:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
}

.contact-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
}

.contact-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-title {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    line-height: 1;
    margin-bottom: 2px;
}

.contact-action {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent-primary);
    line-height: 1;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-img {
    height: 32px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.05));
}

.logo-text {
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -0.02em;
}

.badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    background-color: rgba(37, 99, 235, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-full);
    margin-left: 6px;
    vertical-align: middle;
}

/* HERO SECTION */
.hero-section {
    padding: 80px 0 60px;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at 50% 0%, var(--accent-glow) 0%, transparent 60%);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero-content {
    text-align: left;
}

.hero-title {
    font-size: clamp(2.5rem, 4vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
}

.text-gradient {
    background: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
}

.cta-button {
    display: inline-block;
    background-color: var(--accent-primary);
    color: white;
    font-weight: 600;
    font-size: 1.125rem;
    padding: 16px 36px;
    border-radius: var(--radius-full);
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.25);
}

.cta-button:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.35);
}

.hero-cta-group {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.cta-button.secondary-cta {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
    box-shadow: none;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.cta-button.secondary-cta:hover {
    border-color: var(--accent-primary);
    background-color: rgba(37, 99, 235, 0.03);
    color: var(--accent-primary);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.05);
}

.play-icon-mini {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background-color: var(--accent-primary);
    color: white;
    border-radius: 50%;
    font-size: 0.65rem;
    padding-left: 2px;
    box-shadow: 0 4px 10px rgba(37, 99, 235, 0.2);
    transition: transform 0.3s ease;
}

.cta-button.secondary-cta:hover .play-icon-mini {
    transform: scale(1.1);
    background-color: var(--accent-hover);
}

.hero-image-wrapper {
    position: relative;
}

.hero-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
}

.notice-banner {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background-color: var(--warning-bg);
    border: 1px solid var(--warning-border);
    padding: 12px 20px;
    border-radius: var(--radius-full);
    margin-top: 48px;
    font-size: 0.875rem;
    color: var(--warning-text);
}

/* BENEFITS SECTION */
.benefits-section {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.benefit-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
    margin-bottom: 80px;
}

.benefit-row:last-child {
    margin-bottom: 0;
}

.benefit-row.reverse .benefit-content {
    order: 2;
}

.benefit-row.reverse .benefit-image {
    order: 1;
}

.benefit-content h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.benefit-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.benefit-list {
    list-style: none;
}

.benefit-list li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 12px;
    font-weight: 500;
}

.benefit-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--accent-primary);
    font-weight: 800;
}

.benefit-image img {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: 0 12px 32px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
}

/* FEATURES SECTION */
.features-section {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 40px 32px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0,0,0,0.05);
}

.feature-icon-wrapper {
    width: 64px;
    height: 64px;
    background-color: rgba(37, 99, 235, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.feature-icon {
    width: 32px;
    height: 32px;
    filter: invert(36%) sepia(97%) saturate(2971%) hue-rotate(211deg) brightness(98%) contrast(92%); /* colors svg to accent blue roughly */
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* VIDEO SECTION */
.video-section {
    padding: 100px 0;
    background-color: var(--bg-secondary);
}

.video-section .section-header {
    margin-bottom: 48px;
}

.video-placeholder {
    max-width: 900px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 24px 50px rgba(0,0,0,0.1);
    aspect-ratio: 16 / 9;
    background-color: var(--bg-card);
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    border: 1px solid var(--border-color);
}

.video-placeholder iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

.video-youtube-link {
    text-align: center;
    margin-top: 32px;
}

.video-youtube-link a {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: #ff0000;
    font-weight: 600;
    font-size: 1.05rem;
    text-decoration: none;
    padding: 12px 28px;
    border-radius: var(--radius-full);
    border: 2px solid rgba(255, 0, 0, 0.15);
    background-color: rgba(255, 0, 0, 0.02);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 12px rgba(255, 0, 0, 0.02);
}

.video-youtube-link a:hover {
    color: #ffffff;
    background-color: #ff0000;
    border-color: #ff0000;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 0, 0, 0.2);
}

.video-youtube-link .youtube-icon {
    transition: transform 0.3s ease;
}

.video-youtube-link a:hover .youtube-icon {
    transform: scale(1.1);
}

.video-mockup {
    text-align: center;
    color: var(--text-secondary);
}

.play-button {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 72px;
    height: 72px;
    background-color: var(--accent-primary);
    color: white;
    border-radius: 50%;
    font-size: 24px;
    margin-bottom: 20px;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.play-button:hover {
    transform: scale(1.05) translateY(-2px);
    background-color: var(--accent-hover);
    box-shadow: 0 12px 32px rgba(37, 99, 235, 0.4);
}

/* FAQ SECTION */
.faq-section {
    padding: 100px 0;
    background-color: var(--bg-primary);
}

.faq-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 32px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.faq-question {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.faq-answer {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* FOOTER */
.site-footer {
    padding: 60px 0 40px;
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
    text-align: center;
    color: var(--text-secondary);
}

.footer-legal {
    margin-bottom: 32px;
    font-size: 0.875rem;
    line-height: 1.8;
}

.footer-legal a {
    color: var(--accent-primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-legal a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid rgba(0,0,0,0.05);
}

.footer-subtext {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    padding: 6px 16px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-primary);
    background-color: rgba(37, 99, 235, 0.04);
    border: 1px solid rgba(37, 99, 235, 0.15);
    border-radius: 30px;
    letter-spacing: 0.01em;
    transition: all 0.3s ease;
}

.footer-subtext:hover {
    background-color: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.3);
    transform: scale(1.02);
}

.footer-subtext::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    box-shadow: 0 0 8px var(--accent-primary);
}

.footer-social {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-bottom: 32px;
}

.social-link-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: all 0.2s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.social-link-item:hover {
    color: var(--accent-primary);
    border-color: var(--accent-primary);
    background-color: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.1);
}

.social-icon {
    width: 20px;
    height: 20px;
    stroke-width: 2px;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-grid,
    .benefit-row {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-cta-group {
        justify-content: center;
    }
    
    .hero-subtitle {
        margin: 0 auto 32px;
    }
    
    .benefit-row.reverse .benefit-content,
    .benefit-row.reverse .benefit-image {
        order: initial;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .hero-section,
    .benefits-section,
    .features-section {
        padding: 60px 0;
    }
    
    .notice-banner {
        flex-direction: column;
        text-align: left;
        border-radius: var(--radius-md);
    }
    
    .contact-title {
        display: none;
    }
}

/* Floating Back to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    background-color: var(--accent-primary);
    color: #ffffff;
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25);
}

.scroll-to-top:active {
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .scroll-to-top {
        bottom: 20px;
        right: 20px;
        width: 42px;
        height: 42px;
    }
}