:root {
    --bg-navy: #0B0B2A;
    --trust-blue: #1877F2;
    --neon-cyan: #00E4FF;
    --tiktok-pink: #FF0050;
    --text-white: #ffffff;
    --text-gray: #A2A2C0;
}

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

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

h1, h2, h3 { font-family: 'Outfit', sans-serif; }

/* ---------- HERO (SPLIT LAYOUT) ---------- */
.hero-section {
    padding: 140px 5% 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(11,11,42,0.95) 0%, rgba(5,5,20,0.8) 100%), url('../images/hero_bg.png') center/cover no-repeat;
    position: relative;
    border-bottom: 1px solid #111;
}
.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: stretch; /* ép 2 cột bằng nhau */
    max-width: 1300px;
    margin: 0 auto;
    width: 100%;
}
@media (max-width: 900px) {
    .hero-content { grid-template-columns: 1fr; gap: 40px; text-align: center; }
    .hero-text-side { align-items: center; text-align: center; }
    .hero-text-side > * { text-align: center; }
}
.hero-text-side {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: left;
}
.hero-text-side > div:first-child {
    margin-bottom: 40px;
}
.hero-image-side {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
}
.hero-image-side img {
    width: 135%;
    max-width: 150%;
    height: auto;
    max-height: 650px;
    object-fit: contain;
    border-radius: 0;
    display: block;
    box-shadow: none;
    border: none;
    transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}
.hero-image-side img:hover {
    transform: translateY(-12px) scale(1.03);
    box-shadow: none;
    border: none;
}
.hero-cta-button {
    display: block !important;
    text-align: center;
    text-decoration: none !important;
    margin-top: 24px;
    margin-bottom: 30px; /* Cân bằng với padding-bottom 30px của hero-form-container */
}

.badge-glow {
    display: inline-block; padding: 8px 16px; margin-bottom: 20px;
    background: rgba(0, 228, 255, 0.1); border: 1px solid var(--neon-cyan);
    color: var(--neon-cyan); border-radius: 30px; font-weight: 600;
}
.gradient-text {
    background: linear-gradient(90deg, var(--neon-cyan), var(--tiktok-pink));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.headline { font-size: 4rem; line-height: 1.2; margin-bottom: 1rem; }
.sub-headline { font-size: 1.2rem; color: #E0E0E0; margin-bottom: 3rem; }

/* ---------- FORM ---------- */
.hero-form-container {
    background: rgba(20, 20, 60, 0.8);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid rgba(0, 228, 255, 0.4);
    text-align: left;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}
.form-header { display: flex; align-items: center; gap: 15px; margin-bottom: 20px; }
.form-icon { width: 60px; height: 60px; border-radius: 12px; }
.hero-form-container h3 { color: #fff; font-size: 1.5rem;}
.hero-form-container p { color: var(--neon-cyan); font-weight: 600; margin-bottom: 15px; }
.lead-form input {
    width: 100%; padding: 14px; border-radius: 8px; margin-bottom: 15px;
    background: rgba(0,0,0,0.5); border: 1px solid #555; color: #fff; font-size: 1rem;
}
.neon-button {
    width: 100%; padding: 16px; font-weight: bold; font-size: 1.1rem;
    background: linear-gradient(45deg, var(--tiktok-pink), var(--trust-blue));
    color: white; border: none; border-radius: 8px; cursor: pointer;
    box-shadow: 0 5px 20px rgba(255,0,80,0.4); transition: 0.2s;
}
.neon-button:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(255,0,80,0.6); }

/* ---------- USP BAR (Tại sao chọn N4C) ---------- */
.usp-section { padding: 60px 5%; background: var(--bg-navy); border-bottom: 1px solid rgba(0, 228, 255, 0.1); }
.usp-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
    max-width: 1200px; margin: 0 auto;
}
.usp-card {
    text-align: center; padding: 30px 20px; border-radius: 16px;
    background: rgba(20, 20, 50, 0.5); border: 1px solid rgba(255,255,255,0.05);
    transition: 0.4s;
}
.usp-card:hover {
    border-color: var(--neon-cyan); transform: translateY(-6px);
    box-shadow: 0 10px 30px rgba(0, 228, 255, 0.15);
}
.usp-icon {
    width: 60px; height: 60px; border-radius: 50%; margin: 0 auto 18px;
    display: flex; align-items: center; justify-content: center; font-size: 1.8rem;
    background: rgba(0, 228, 255, 0.08); border: 1px solid rgba(0, 228, 255, 0.2);
    transition: 0.3s;
}
.usp-card:hover .usp-icon {
    background: rgba(0, 228, 255, 0.15); box-shadow: 0 0 20px rgba(0, 228, 255, 0.3);
}
.usp-card h4 { color: #fff; font-size: 1.1rem; margin-bottom: 8px; line-height: 1.3; }
.usp-card p { color: var(--text-gray); font-size: 0.88rem; line-height: 1.5; }
@media (max-width: 900px) { .usp-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .usp-grid { grid-template-columns: 1fr; } }

/* ---------- DEMO 9 VIDEO VEO3 STYLE ---------- */
.demo-gallery-section { padding: 80px 5% 40px; background: var(--bg-navy); }
.demo-grid-3x3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px 30px; max-width: 1100px; margin: 0 auto; }
.demo-video-item { cursor: pointer; transition: 0.3s; text-align: center; }
.demo-video-item:hover { transform: translateY(-5px); }
.thumb-wrapper {
    position: relative; width: 100%; padding-top: 56.25%; /* 16:9 Aspect Ratio tuyệt đối */
    background: #000; border-radius: 12px;
    overflow: hidden; border: 1px solid rgba(255,255,255,0.05); margin-bottom: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5); transition: 0.3s;
}
.thumb-wrapper img {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    object-fit: cover; opacity: 0.8; transition: 0.5s;
}
.demo-video-item:hover .thumb-wrapper { border-color: var(--tiktok-pink); box-shadow: 0 15px 40px rgba(255, 0, 80, 0.3); }
.demo-video-item:hover .thumb-wrapper img { opacity: 1; transform: scale(1.05); }
.demo-play-btn {
    position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
    font-size: 3rem; color: rgba(255,255,255,0.8); transition: 0.3s; z-index: 2;
    text-shadow: 0 0 15px rgba(0,0,0,0.8);
}
.demo-video-item:hover .demo-play-btn { color: white; transform: translate(-50%, -50%) scale(1.2); text-shadow: 0 0 25px var(--tiktok-pink); }
.academy-title {
    color: white; font-weight: 600; font-size: 1.1rem; text-transform: uppercase; transition: 0.3s; line-height: 1.4;
}
.demo-video-item:hover .academy-title { color: var(--neon-cyan); }
@media (max-width: 900px) { .demo-grid-3x3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .demo-grid-3x3 { grid-template-columns: 1fr; } }

/* ---------- FEATURES ---------- */
.features-section { padding: 100px 5%; background: #050514; }
.section-title { text-align: center; margin-bottom: 50px; }
.section-title h2 { font-size: 3rem; margin-bottom: 10px; }
.section-title p { color: var(--text-gray); font-size: 1.1rem; }
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; max-width: 1200px; margin: 0 auto; }
.feature-card { padding: 40px; background: rgba(25, 25, 60, 0.5); border-radius: 16px; border: 1px solid rgba(0, 228, 255, 0.15); transition: 0.3s; }
.feature-card:hover { border-color: var(--neon-cyan); transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0, 228, 255, 0.2); }
.icon-glow { font-size: 2.5rem; margin-bottom: 20px; }
.feature-card h3 { color: var(--neon-cyan); margin-bottom: 10px; font-size: 1.5rem; }
.feature-card p { color: var(--text-gray); line-height: 1.7; }

/* ---------- PRICING SECTION ---------- */
.pricing-section { padding: 100px 5%; background: var(--bg-navy); }
.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 30px; max-width: 1350px; margin: 0 auto; align-items: start; }
.pricing-card { background: rgba(25, 25, 60, 0.8); border: 1px solid rgba(255,255,255,0.1); border-radius: 20px; padding: 40px; text-align: center; transition: 0.3s; }
.pricing-card:hover { border-color: var(--trust-blue); }
.pricing-card h3 { font-size: 1.8rem; margin-bottom: 15px; color: #fff; }
.pricing-card .price { font-size: 2.8rem; color: var(--neon-cyan); margin-bottom: 30px; }
.pricing-features { list-style: none; text-align: left; margin-bottom: 40px; }
.pricing-features li { padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,0.05); color: var(--text-white); }
.outline-btn { background: transparent; border: 2px solid var(--trust-blue); color: var(--trust-blue); width: 100%; transition: 0.3s;}
.outline-btn:hover { background: var(--trust-blue); color: white; }

/* Pro Card Special Styling */
.pro-card { border-color: var(--tiktok-pink); transform: scale(1.05); box-shadow: 0 15px 40px rgba(255,0,80,0.2); position: relative;}
.pro-card .best-seller { position: absolute; top: -15px; left: 50%; transform: translateX(-50%); background: var(--tiktok-pink); color: white; border: none;}
.pro-card .price { color: var(--tiktok-pink); }
.pro-card:hover { border-color: var(--neon-cyan); transform: scale(1.05) translateY(-5px); box-shadow: 0 20px 50px rgba(0,228,255,0.3); }

/* ---------- WORKFLOW ZIGZAG TIMELINE ---------- */
.workflow-section { padding: 100px 5% 60px; background: var(--bg-navy); border-bottom: 1px solid rgba(0, 228, 255, 0.1); }
.workflow-timeline { position: relative; max-width: 1100px; margin: 0 auto; }
/* Đường kẻ phát sáng giữa timeline */
.workflow-timeline::before {
    content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 3px;
    background: linear-gradient(180deg, var(--neon-cyan), var(--tiktok-pink), var(--neon-cyan));
    transform: translateX(-50%); border-radius: 2px;
    box-shadow: 0 0 12px rgba(0, 228, 255, 0.4);
}
.timeline-step {
    display: flex; align-items: center; gap: 40px; margin-bottom: 60px; position: relative;
}
.timeline-step.reverse { flex-direction: row-reverse; }
.timeline-step .step-visual { flex: 1; position: relative; }
.timeline-step .step-visual img {
    width: 100%; border-radius: 16px; border: 1px solid rgba(0, 228, 255, 0.2);
    box-shadow: 0 10px 40px rgba(0,0,0,0.4); transition: 0.4s;
}
.timeline-step:hover .step-visual img {
    box-shadow: 0 15px 50px rgba(0, 228, 255, 0.3); transform: scale(1.02);
}
.timeline-step .step-info { flex: 1; }
/* Nút tròn số trên đường timeline */
.step-dot {
    position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
    width: 56px; height: 56px; border-radius: 50%; z-index: 2;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; font-weight: 900; color: #fff;
    background: linear-gradient(135deg, var(--neon-cyan), var(--trust-blue));
    box-shadow: 0 0 20px rgba(0, 228, 255, 0.5), 0 0 40px rgba(0, 228, 255, 0.2);
    border: 3px solid #0a0a2a;
}
.timeline-step:nth-child(even) .step-dot {
    background: linear-gradient(135deg, var(--tiktok-pink), #ff6b9d);
    box-shadow: 0 0 20px rgba(255, 0, 80, 0.5), 0 0 40px rgba(255, 0, 80, 0.2);
}
.step-label {
    display: inline-block; padding: 5px 14px; border-radius: 20px; font-size: 0.75rem;
    font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: 12px;
    background: rgba(0, 228, 255, 0.1); color: var(--neon-cyan); border: 1px solid rgba(0, 228, 255, 0.3);
}
.timeline-step:nth-child(even) .step-label {
    background: rgba(255, 0, 80, 0.1); color: var(--tiktok-pink); border-color: rgba(255, 0, 80, 0.3);
}
.step-info h3 { color: #fff; font-size: 1.5rem; margin-bottom: 10px; line-height: 1.3; }
.step-info p { color: var(--text-gray); font-size: 0.95rem; line-height: 1.7; }
.step-info .step-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 15px; }
.step-tag {
    padding: 4px 12px; border-radius: 6px; font-size: 0.8rem; font-weight: 600;
    background: rgba(255,255,255,0.04); color: rgba(255,255,255,0.6);
    border: 1px solid rgba(255,255,255,0.08);
}
@media (max-width: 900px) {
    .workflow-timeline::before { left: 24px; }
    .timeline-step, .timeline-step.reverse { flex-direction: column; gap: 20px; }
    .step-dot { left: 24px; top: 0; transform: translate(-50%, 0); width: 44px; height: 44px; font-size: 1.2rem; }
}

/* ---------- BONUSES SECTION ---------- */
.bonuses-section { padding: 100px 5%; background: var(--bg-navy); }
.bonuses-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; max-width: 1200px; margin: 0 auto; }
.bonus-col { background: rgba(255,255,255,0.02); padding: 40px; border-radius: 20px; border: 1px solid rgba(0, 228, 255, 0.1); }
.bonus-item { display: flex; align-items: flex-start; gap: 15px; margin-bottom: 30px; }
.bonus-item:last-child { margin-bottom: 0; }
.bonus-icon { font-size: 2.5rem; }
.bonus-text h4 { color: white; font-size: 1.2rem; margin-bottom: 5px; }
.bonus-text p { color: var(--text-gray); font-size: 0.95rem; }

/* ---------- DOWNLOAD SECTION ---------- */
.download-section { padding: 80px 5%; background: #050514; text-align: center; border-bottom: 1px solid rgba(0, 228, 255, 0.1); }
.download-grid { display: flex; justify-content: center; gap: 40px; max-width: 800px; margin: 40px auto 0; flex-wrap: wrap; }
.download-card { 
    flex: 1; min-width: 300px; background: rgba(20, 20, 50, 0.8); padding: 40px 30px; 
    border-radius: 20px; border: 1px solid rgba(0, 228, 255, 0.3); transition: 0.3s;
}
.download-card:hover { box-shadow: 0 15px 40px rgba(0, 228, 255, 0.2); transform: translateY(-5px); }
.download-card.mac { border-color: rgba(255,0,80,0.3); }
.download-card.mac:hover { box-shadow: 0 15px 40px rgba(255, 0, 80, 0.2); }
.download-icon { font-size: 4rem; margin-bottom: 20px; color: var(--neon-cyan); }
.download-card.mac .download-icon { color: var(--tiktok-pink); }
.download-card h3 { font-size: 1.8rem; margin-bottom: 10px; }
.download-card p { color: var(--text-gray); font-size: 0.95rem; margin-bottom: 25px; }
.download-btn {
    display: inline-block; width: 100%; padding: 16px; border-radius: 8px; font-weight: bold; font-size: 1.1rem;
    text-decoration: none; color: #000; background: var(--neon-cyan); transition: 0.3s;
}
.download-card.mac .download-btn { background: var(--tiktok-pink); color: white; }
.download-btn:hover { filter: brightness(1.2); }

@media (max-width: 900px) { 
    .workflow-container { flex-direction: column; } 
    .bonuses-grid { grid-template-columns: 1fr; }
}

/* ---------- FOOTER TÁC GIẢ ---------- */
.footer { padding: 60px 5% 30px; background: rgba(5, 5, 20, 0.95); border-top: 1px solid rgba(0, 228, 255, 0.2); }
.footer-wrapper { max-width: 800px; margin: 0 auto 40px; text-align: center; }
.author-card { background: rgba(20, 20, 60, 0.4); padding: 40px; border-radius: 20px; border: 1px solid rgba(255,255,255,0.05); }
.author-card h3 { color: var(--text-gray); font-size: 1.1rem; margin-bottom: 5px; }
.author-card h2 { font-size: 2.2rem; margin-bottom: 25px; }
.contact-links { margin-bottom: 30px; }
.contact-links p { font-size: 1.2rem; margin-bottom: 10px; }
.contact-links a { color: var(--neon-cyan); text-decoration: none; font-weight: bold; }
.social-links { display: flex; justify-content: center; gap: 20px; }
.social-btn { padding: 12px 30px; border-radius: 30px; text-decoration: none; font-weight: bold; transition: 0.3s; color: white; }
.face-btn { background: #1877F2; }
.tube-btn { background: #FF0000; }
.social-btn:hover { transform: translateY(-3px); filter: brightness(1.2); }
.copyright { text-align: center; color: var(--text-gray); font-size: 0.9rem; }

/* ---------- LIGHTBOX ---------- */
.lightbox { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.9); z-index: 10000; }
.lightbox-content { width: 85%; height: 75vh; margin: 5vh auto; background: #000; border: 2px solid var(--neon-cyan); border-radius: 12px; }
.close-lightbox { position: absolute; top: 15px; right: 30px; color: white; font-size: 50px; cursor: pointer; z-index: 10001; }

/* Responsive adjustments */
@media (max-width: 768px) {
    .headline { font-size: 3rem; }
    .pro-card { transform: scale(1); }
    .nav-links { display: none; }
    .stat-box h3 { font-size: 2.5rem; }
    .social-links { flex-direction: column; }
}

/* =========================================
   UI ENHANCEMENTS: ANIMATIONS, FAQ, TESTIMONIALS, FLOATING BTNS
   ========================================= */

/* 1. Scroll Animations (AOS style) */
.animate-hidden {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.animate-show {
    opacity: 1;
    transform: translateY(0);
}

/* Delay classes */
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }

/* 2. FAQ Accordion Section */
.faq-section { padding: 100px 5%; background: #050514; border-top: 1px solid rgba(0, 228, 255, 0.1); }
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-item {
    background: rgba(20, 20, 50, 0.5);
    border: 1px solid rgba(0, 228, 255, 0.15);
    border-radius: 12px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: 0.3s;
}
.faq-item.active { border-color: var(--neon-cyan); box-shadow: 0 0 20px rgba(0, 228, 255, 0.1); }
.faq-question {
    padding: 20px 25px; cursor: pointer; display: flex; justify-content: space-between; align-items: center;
    font-size: 1.1rem; font-weight: bold; color: white; user-select: none;
}
.faq-question:hover { background: rgba(0, 228, 255, 0.05); }
.faq-toggle { font-size: 1.5rem; color: var(--neon-cyan); transition: transform 0.3s; }
.faq-item.active .faq-toggle { transform: rotate(45deg); color: var(--tiktok-pink); }
.faq-answer {
    padding: 0 25px; max-height: 0; overflow: hidden; transition: max-height 0.4s ease-out, padding 0.4s ease;
    color: var(--text-gray); line-height: 1.6; font-size: 0.95rem;
}
.faq-item.active .faq-answer { padding: 0 25px 25px; max-height: 500px; }

/* 3. Testimonials (Đánh giá khách hàng) */
.testimonials-section { padding: 100px 5%; background: var(--bg-navy); border-top: 1px solid rgba(255, 0, 80, 0.1); }
.testimonials-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; max-width: 1200px; margin: 0 auto;
}
.testimonial-card {
    background: rgba(255, 255, 255, 0.03); backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.08); border-radius: 20px; padding: 30px;
    position: relative; transition: 0.3s;
}
.testimonial-card:hover { transform: translateY(-10px); border-color: var(--tiktok-pink); box-shadow: 0 15px 40px rgba(255, 0, 80, 0.15); }
.quote-icon { position: absolute; top: 20px; right: 20px; font-size: 3rem; color: rgba(255, 255, 255, 0.05); }
.testi-stars { color: #FFD700; font-size: 1.2rem; margin-bottom: 15px; }
.testi-text { color: var(--text-gray); font-style: italic; font-size: 0.95rem; line-height: 1.6; margin-bottom: 20px; }
.testi-user { display: flex; align-items: center; gap: 15px; border-top: 1px solid rgba(255,255,255,0.05); padding-top: 20px;}
.testi-avatar { width: 50px; height: 50px; border-radius: 50%; background: linear-gradient(135deg, var(--neon-cyan), var(--trust-blue)); display: flex; align-items: center; justify-content: center; font-weight: bold; color: white; font-size: 1.2rem;}
.testi-info h4 { color: white; font-size: 1rem; margin-bottom: 3px; }
.testi-info p { color: var(--neon-cyan); font-size: 0.8rem; }
@media (max-width: 900px) { .testimonials-grid { grid-template-columns: 1fr; } }

/* 4. Floating Action Buttons (FAB) */
.floating-actions {
    position: fixed; bottom: 30px; right: 30px; display: flex; flex-direction: column; gap: 15px; z-index: 9999;
}
.fab-btn {
    width: 60px; height: 60px; border-radius: 50%; display: flex; align-items: center; justify-content: center;
    color: white; font-size: 1.5rem; text-decoration: none; cursor: pointer; transition: 0.3s; border: none;
    box-shadow: 0 10px 20px rgba(0,0,0,0.3); position: relative;
}
.fab-zalo { background: #0088FF; font-size: 2rem; font-weight: bold;}
.fab-zalo::before {
    content: ''; position: absolute; inset: -5px; border-radius: 50%; border: 2px solid #0088FF;
    animation: pulseGlow 2s infinite ease-out; opacity: 0;
}
.fab-zalo:hover { background: #0066CC; transform: scale(1.1); }
.fab-top { background: rgba(20,20,50,0.8); border: 1px solid rgba(255,255,255,0.1); opacity: 0; pointer-events: none; transform: translateY(20px); }
.fab-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.fab-top:hover { background: var(--neon-cyan); color: #000; border-color: var(--neon-cyan); }

@keyframes pulseGlow {
    0% { transform: scale(0.9); opacity: 1; }
    100% { transform: scale(1.4); opacity: 0; }
}

/* Background Particle FX tweaks for hero */
.hero-section { position: relative; overflow: hidden; }
.hero-section::after {
    content: ''; position: absolute; inset: 0; pointer-events: none;
    background-image: radial-gradient(circle at 50% 10%, rgba(0, 228, 255, 0.1) 0%, transparent 40%);
    z-index: 0;
}

/* =========================================
   LEAD MAGNET POPUP UI
   ========================================= */
.lead-popup-overlay {
    position: fixed; inset: 0; background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px); z-index: 20000;
    display: none; align-items: center; justify-content: center;
    opacity: 0; transition: opacity 0.5s ease;
}
.lead-popup-overlay.show {
    opacity: 1; display: flex;
}
.lead-popup-content {
    background: rgba(15, 15, 40, 0.95); border-radius: 24px;
    border: 2px solid rgba(0, 228, 255, 0.3);
    box-shadow: 0 20px 60px rgba(0,0,0,0.8), 0 0 50px rgba(0, 228, 255, 0.2);
    width: 90%; max-width: 850px; min-height: 420px;
    position: relative; display: flex; overflow: hidden;
    transform: scale(0.9); transition: transform 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.lead-popup-overlay.show .lead-popup-content { transform: scale(1); }
.close-popup {
    position: absolute; top: 15px; right: 25px; font-size: 32px;
    color: var(--text-gray); cursor: pointer; z-index: 10; transition: 0.3s;
}
.close-popup:hover { color: var(--tiktok-pink); transform: rotate(90deg); }

.popup-left {
    flex: 1; background: linear-gradient(135deg, rgba(0, 228, 255, 0.1) 0%, rgba(255, 0, 80, 0.15) 100%), url('../images/hero_bg.png') center/cover;
    padding: 40px; display: flex; flex-direction: column; justify-content: center;
    text-align: center; border-right: 1px solid rgba(255,255,255,0.05); position: relative;
}
.popup-left::after {
    content: ''; position: absolute; inset: 0; background: rgba(0,0,0,0.7); z-index: 1;
}
.popup-left > * { position: relative; z-index: 2; }
.popup-gift-icon { font-size: 5rem; margin-bottom: 25px; text-shadow: 0 0 20px rgba(0,228,255,0.8); animation: floatBtn 3s ease-in-out infinite; }
.popup-left h3 { font-size: 1.6rem; color: #fff; margin-bottom: 15px; }
.popup-left p { color: var(--neon-cyan); font-weight: 500; font-size: 1.05rem; }

.popup-right {
    flex: 1.2; padding: 50px 40px; background: rgba(10, 10, 30, 0.95);
    display: flex; flex-direction: column; justify-content: center;
}
.popup-right > p { color: var(--text-gray); margin-bottom: 25px; font-size: 0.95rem; line-height: 1.6; }
.popup-form { display: flex; flex-direction: column; gap: 12px; }
.popup-form input {
    background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.1); padding: 15px 20px; border-radius: 12px; color: #fff; font-size: 1rem; transition: 0.3s;
}
.popup-form input:focus { border-color: var(--neon-cyan); outline: none; background: rgba(255,255,255,0.08); box-shadow: 0 0 15px rgba(0,228,255,0.2); }
.popup-form button { margin-top: 10px; padding: 18px; border-radius: 12px; font-size: 1.1rem; filter: saturate(1.2); }
.popup-form small { text-align: center; color: var(--text-gray); font-size: 0.85rem; margin-top: 8px; }

.slide-glow-btn { position: relative; overflow: hidden; }
.slide-glow-btn::after {
    content: ''; position: absolute; top: -50%; left: -60%; width: 20%; height: 200%;
    background: rgba(255,255,255,0.3); transform: rotate(35deg); transition: 0.5s;
}
.slide-glow-btn:hover::after { left: 140%; }

@keyframes floatBtn { 0%, 100% {transform:translateY(0)} 50% {transform:translateY(-12px)} }
@media (max-width: 800px) { 
    .lead-popup-content { flex-direction: column; min-height: auto; width: 95%; } 
    .popup-left { padding: 30px 20px; border-right: none; border-bottom: 1px solid rgba(255,255,255,0.05); } 
    .popup-right { padding: 30px 20px; }
}