:root {
    --primary: #EF0606;
    --primary-dark: #cc0404;
    --secondary: #000000;
    --gray-bg: #f8f9fa;
    --gray-light: #f5f5f7;
    --white: #ffffff;
    --text: #1d1d1f;
    --text-dim: #6e6e73;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    background-color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    color: var(--secondary);
}

/* Nav */
nav {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--gray-light);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo { height: 40px; }

.nav-links {
    display: flex;
    gap: 25px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.nav-links a:hover { color: var(--primary); }

.btn-outline-red {
    border: 2px solid var(--primary);
    color: var(--primary) !important;
    padding: 8px 18px;
    border-radius: 12px;
    transition: all 0.3s;
}

.btn-outline-red:hover {
    background: var(--primary);
    color: var(--white) !important;
}

/* Hero Section */
.hero {
    background: linear-gradient(180deg, var(--white) 0%, var(--gray-light) 100%);
    padding: 80px 0;
}

.hero-layout {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 40px;
    padding: 0 20px;
}

.hero-text-col { 
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 450px;
}
.hero-img-col { 
    height: 100%;
    position: relative; 
}

.badge {
    background: #EF0606;
    color: #ffffff;
    padding: 4px 12px;
    border-radius: 30px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-bottom: 20px;
    display: inline-block;
    width: fit-content;
    border: 1px solid #000000;
}

@media (max-width: 480px) {
    .badge {
        width: 100%;
        text-align: center;
    }
}

.hero-brand {
    margin: 5px 0 25px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.hero-logo-integrated {
    width: 100%;
    max-width: 500px; /* Limits size on ultra-wide screens but fills most layouts */
    height: auto;
    object-fit: contain;
    display: block;
}

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

.btn-main {
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    padding: 18px 32px;
    border-radius: 16px;
    font-weight: 800;
    font-size: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 10px 20px rgba(239, 6, 6, 0.2);
    transition: all 0.3s;
}

.btn-main:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px rgba(239, 6, 6, 0.3);
}

.ota-note {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-img-main {
    width: 90%;
    height: auto;
    margin: 0 auto;
    border-radius: 30px;
    box-shadow: 0 30px 60px rgba(0,0,0,0.15);
    border: 1px solid var(--white);
    display: block;
}

/* Intro Section */
.intro { padding: 80px 0; background: var(--white); }
.intro-box {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.intro-box h2 {
    font-size: 2.2rem;
    margin-bottom: 24px;
    line-height: 1.2;
}

.intro-box p {
    font-size: 1.15rem;
    color: var(--text-dim);
}

/* Interest (Services) */
.interest { padding: 100px 0; background: var(--gray-light); }
.section-header { text-align: center; margin-bottom: 60px; max-width: 800px; margin-left: auto; margin-right: auto; }
.section-header h2 { font-size: 2.5rem; margin-bottom: 20px; }

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

.service-card {
    background: var(--white);
    padding: 40px;
    border-radius: 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.service-card:hover { transform: translateY(-10px); }
.service-card.red { background: var(--primary); color: var(--white); }
.service-card.red h3, .service-card.red p { color: var(--white); }

.s-icon { font-size: 2.5rem; margin-bottom: 20px; color: var(--primary); }
.service-card.red .s-icon { color: var(--white); }

/* Desire Section */
.desire { padding: 100px 0; }
.desire h2 { text-align: center; font-size: 2.5rem; margin-bottom: 10px; }
.section-sub { text-align: center; color: var(--text-dim); margin-bottom: 60px; }

.benefits-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.benefit-item {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.emoji { font-size: 2.5rem; }
.benefit-item h4 { font-size: 1.3rem; margin-bottom: 8px; }
.benefit-item p { color: var(--text-dim); font-size: 1.05rem; }

.tech-badge {
    margin-top: 60px;
    background: var(--gray-light);
    padding: 20px;
    border-radius: 12px;
    text-align: center;
    font-size: 0.95rem;
}

/* Audience Grid */
.audience { padding: 100px 0; background: var(--white); }
.audience h2 { text-align: center; font-size: 2.2rem; margin-bottom: 60px; }
.audience-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.a-card {
    text-align: center;
    padding: 30px;
    border: 1px solid var(--gray-light);
    border-radius: 20px;
    transition: border-color 0.3s;
}

.a-card:hover { border-color: var(--primary); }
.a-card i { font-size: 2rem; color: var(--primary); margin-bottom: 15px; }

/* Action Box */
.action { padding: 80px 0; }
.action-box {
    background: var(--secondary);
    color: var(--white);
    padding: 80px 40px;
    border-radius: 40px;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}

.action-box h2 { color: var(--white); font-size: 2.5rem; margin-bottom: 20px; }
.action-box p { font-size: 1.2rem; color: #999; margin-bottom: 40px; }

.btn-main.large { padding: 22px 48px; font-size: 1.3rem; }
.ota-note.white { color: #666; margin-top: 20px; justify-content: center; }

/* FAQ */
.faq { padding: 100px 0; background: var(--white); }
.faq h2 { text-align: center; margin-bottom: 60px; }
.faq-list { max-width: 700px; margin: 0 auto; }
.faq-item { margin-bottom: 40px; }
.faq-item h4 { font-size: 1.2rem; margin-bottom: 12px; }
.faq-item p { color: var(--text-dim); }

/* Tutorial Section */
.tutorial-section {
    padding: 80px 0;
    background: var(--white);
    text-align: center;
}

.tutorial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 40px auto 0;
}

.video-card {
    background: var(--gray-light);
    padding: 25px;
    border-radius: 30px;
    transition: transform 0.3s ease;
}

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

.video-container {
    width: 100%;
    max-width: 260px;
    margin: 0 auto;
    aspect-ratio: 9 / 16;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    border: 6px solid #1d1d1f;
    background: #000;
}

.video-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.video-card h4 {
    margin-top: 20px;
    font-size: 1.1rem;
    font-weight: 700;
}

/* Footer (existing) */
.footer { padding: 60px 0; background: var(--gray-light); border-top: 1px solid #ddd; }
.footer-content { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.footer-logo { height: 30px; opacity: 0.5; }
.social-mini { display: flex; gap: 20px; font-size: 1.2rem; }
.social-mini a { color: var(--text-dim); }

/* Mobile */
@media (max-width: 968px) {
    .nav-container { flex-direction: column; gap: 15px; }
    .nav-links { flex-wrap: wrap; justify-content: center; gap: 15px; }
    .hero-layout { grid-template-columns: 1fr; text-align: center; padding-top: 40px; gap: 20px; }
    .hero-brand { justify-content: center; margin-bottom: 20px; }
    .hero-text-col { min-height: auto; order: 1; padding-bottom: 30px; }
    .hero-img-col { height: auto; order: 2; }
    .hero-img-main { width: 100%; min-height: auto; }
    .hero h1 { font-size: 2.8rem; }
    .services-grid { grid-template-columns: 1fr; }
    .audience-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 480px) {
    .audience-grid { grid-template-columns: 1fr; }
    .action-box { border-radius: 0; padding: 40px 20px; }
}

/* Android Only Text */
.android-only-text {
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-top: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    display: block;
}

.android-only-text.white {
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 968px) {
    .android-only-text {
        text-align: center;
    }
}