/* ============================================
   BRAINERGY™ — Cerebral Luxe Theme
   Navy / Electric Blue / Gold
   ============================================ */

:root {
    /* Core Palette */
    --navy: #0a0e27;
    --navy-light: #111640;
    --navy-mid: #161b4a;
    --blue-electric: #3b82f6;
    --blue-glow: #60a5fa;
    --blue-deep: #1d4ed8;
    --gold: #f5a623;
    --gold-light: #fbbf24;
    --white: #ffffff;
    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
    --green-check: #22c55e;
    --red-urgent: #ef4444;

    /* Typography */
    --font-display: 'DM Serif Display', Georgia, serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --section-pad: 80px;
    --container-max: 1200px;

    /* Transitions */
    --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
    font-family: var(--font-body);
    color: var(--gray-800);
    background: var(--white);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
h1,h2,h3,h4 { font-family: var(--font-display); font-weight: 400; line-height: 1.2; }

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

/* ===== ANNOUNCEMENT BAR ===== */
.announcement-bar {
    background: linear-gradient(90deg, var(--blue-deep), var(--blue-electric), var(--blue-deep));
    background-size: 200% 100%;
    animation: gradientSlide 6s ease-in-out infinite;
    color: var(--white);
    padding: 10px 0;
    text-align: center;
    font-size: 14px;
    font-weight: 600;
    position: relative;
    z-index: 110;
}
.announcement-text { display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: center; }
.pulse-dot {
    width: 8px; height: 8px; background: var(--gold); border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.5); } }
@keyframes gradientSlide { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

/* ===== HEADER ===== */
.site-header {
    position: sticky; top: 0; z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    transition: box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(0,0,0,0.08); }
.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 68px; gap: 24px;
}
.logo { display: flex; align-items: center; gap: 8px; }
.logo-icon { font-size: 24px; }
.logo-text {
    font-family: var(--font-display); font-size: 22px; color: var(--navy);
    letter-spacing: 1px;
}
.logo-tm { font-size: 12px; vertical-align: super; color: var(--blue-electric); }
.main-nav ul { display: flex; gap: 28px; }
.main-nav a {
    font-size: 14px; font-weight: 600; color: var(--gray-600);
    transition: color 0.2s; position: relative;
}
.main-nav a:hover { color: var(--blue-electric); }
.main-nav a::after {
    content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
    background: var(--blue-electric); transition: width 0.3s var(--ease-smooth);
}
.main-nav a:hover::after { width: 100%; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    font-weight: 700; font-size: 15px; border-radius: 8px;
    padding: 12px 28px; transition: all 0.3s var(--ease-smooth);
    text-align: center;
}
.btn-primary {
    background: linear-gradient(135deg, var(--blue-electric), var(--blue-deep));
    color: var(--white); box-shadow: 0 4px 16px rgba(59,130,246,0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(59,130,246,0.45);
}
.btn-ghost {
    color: var(--blue-electric); border: 2px solid var(--blue-electric);
    background: transparent;
}
.btn-ghost:hover { background: var(--blue-electric); color: var(--white); }
.btn-nav {
    background: var(--navy); color: var(--white); padding: 10px 22px;
    font-size: 13px; border-radius: 6px;
}
.btn-nav:hover { background: var(--blue-deep); }
.btn-lg { padding: 16px 36px; font-size: 17px; border-radius: 10px; }
.btn-block { width: 100%; }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; padding: 4px; }
.hamburger span { width: 24px; height: 2px; background: var(--navy); transition: all 0.3s; border-radius: 2px; }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

/* Mobile Menu */
.mobile-menu {
    display: none; position: fixed; top: 68px; left: 0; right: 0;
    background: var(--white); z-index: 99;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    padding: 20px 24px;
}
.mobile-menu.active { display: block; }
.mobile-menu ul { display: flex; flex-direction: column; gap: 16px; }
.mobile-menu a { font-size: 16px; font-weight: 600; color: var(--gray-700); padding: 8px 0; display: block; }

/* ===== REVEAL ANIMATION ===== */
.reveal {
    opacity: 0; transform: translateY(30px);
    transition: opacity 0.7s var(--ease-smooth), transform 0.7s var(--ease-smooth);
}
.reveal.active { opacity: 1; transform: translateY(0); }

/* ===== HERO ===== */
.hero {
    background: var(--navy);
    color: var(--white);
    position: relative;
    overflow: hidden;
    padding: 80px 0 40px;
}
.hero-bg-effects { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-orb {
    position: absolute; border-radius: 50%;
    filter: blur(80px); opacity: 0.15;
}
.hero-orb-1 {
    width: 500px; height: 500px;
    background: var(--blue-electric);
    top: -100px; right: -100px;
    animation: orbFloat 15s ease-in-out infinite;
}
.hero-orb-2 {
    width: 400px; height: 400px;
    background: var(--gold);
    bottom: -150px; left: -100px;
    animation: orbFloat 18s ease-in-out infinite reverse;
}
@keyframes orbFloat {
    0%,100% { transform: translate(0,0); }
    50% { transform: translate(40px, -40px); }
}
.hero-grid-lines {
    position: absolute; inset: 0;
    background-image:
        linear-gradient(rgba(59,130,246,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59,130,246,0.04) 1px, transparent 1px);
    background-size: 60px 60px;
}
.hero-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 60px; align-items: center;
    position: relative; z-index: 2;
}
.hero-badge {
    display: inline-flex; align-items: center; gap: 10px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 100px; padding: 8px 20px;
    font-size: 13px; margin-bottom: 24px;
    backdrop-filter: blur(8px);
}
.badge-stars { color: var(--gold); letter-spacing: 2px; }
.hero-title {
    font-size: clamp(2.2rem, 4vw, 3.6rem);
    line-height: 1.15;
    margin-bottom: 24px;
}
.hero-title em { font-style: italic; color: var(--gray-400); }
.highlight-text {
    background: linear-gradient(135deg, var(--blue-glow), var(--gold-light));
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    font-size: 17px; color: var(--gray-300); margin-bottom: 24px;
    max-width: 540px; line-height: 1.75;
}
.hero-checklist { margin-bottom: 32px; }
.hero-checklist li {
    font-size: 15px; color: var(--gray-200);
    padding: 6px 0; display: flex; align-items: center; gap: 10px;
}
.check-icon { color: var(--green-check); font-weight: 700; font-size: 16px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 16px; }
.hero-micro { font-size: 13px; color: var(--gray-400); }
.hero-product {
    display: flex; justify-content: center; align-items: center;
}
.hero-product img {
    max-width: 440px; width: 100%;
    filter: drop-shadow(0 20px 60px rgba(59,130,246,0.25));
    animation: heroFloat 6s ease-in-out infinite;
}
@keyframes heroFloat {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* Trust Row */
.trust-row {
    margin-top: 40px; padding-top: 40px;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.trust-badges {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 32px;
}
.trust-badge {
    display: flex; flex-direction: column; align-items: center; gap: 8px;
    text-align: center;
}
.trust-badge img { width: 70px; height: auto; opacity: 0.85; }
.trust-badge span { font-size: 12px; color: var(--gray-400); font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }

/* ===== SECTION HEADERS ===== */
.section-header { text-align: center; margin-bottom: 56px; max-width: 760px; margin-left: auto; margin-right: auto; }
.section-label {
    display: inline-block; font-size: 13px; font-weight: 700;
    text-transform: uppercase; letter-spacing: 2px;
    color: var(--blue-electric); margin-bottom: 12px;
}
.section-header h2 { font-size: clamp(1.8rem, 3vw, 2.6rem); margin-bottom: 16px; color: var(--navy); }
.section-desc { font-size: 16px; color: var(--gray-500); line-height: 1.75; }

/* ===== PROBLEM ===== */
.section-problem { background: var(--gray-50); }
.problem-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
    margin-bottom: 40px;
}
.problem-card {
    background: var(--white); border-radius: 16px;
    padding: 32px 28px; text-align: center;
    border: 1px solid var(--gray-200);
    transition: transform 0.3s, box-shadow 0.3s;
}
.problem-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.problem-icon { font-size: 36px; margin-bottom: 16px; }
.problem-card h3 { font-size: 18px; margin-bottom: 8px; color: var(--navy); }
.problem-card p { font-size: 14px; color: var(--gray-500); }
.problem-callout {
    background: linear-gradient(135deg, var(--navy), var(--navy-mid));
    color: var(--white); border-radius: 16px;
    padding: 32px 40px; font-size: 16px; line-height: 1.8;
    border-left: 4px solid var(--gold);
}
.problem-callout strong { color: var(--gold-light); }

/* ===== HOW IT WORKS ===== */
.mechanism-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px;
    margin-bottom: 48px;
}
.mechanism-card {
    background: var(--gray-50); border-radius: 16px;
    padding: 36px 32px; position: relative; overflow: hidden;
    border: 1px solid var(--gray-200);
    transition: all 0.3s;
}
.mechanism-card:hover { border-color: var(--blue-electric); }
.mechanism-number {
    font-family: var(--font-display); font-size: 48px;
    color: var(--blue-electric); opacity: 0.15;
    position: absolute; top: 16px; right: 24px;
}
.mechanism-card h3 { font-size: 20px; color: var(--navy); margin-bottom: 12px; }
.mechanism-card p { font-size: 15px; color: var(--gray-500); }
.how-image { text-align: center; margin-bottom: 32px; }
.how-image img { max-width: 400px; margin: 0 auto; border-radius: 20px; box-shadow: 0 20px 60px rgba(0,0,0,0.1); }
.how-cta { text-align: center; }

/* ===== INGREDIENTS ===== */
.section-ingredients { background: var(--gray-50); }
.ingredients-accordion { max-width: 800px; margin: 0 auto; }
.ingredient-item {
    background: var(--white); border-radius: 12px;
    margin-bottom: 12px; border: 1px solid var(--gray-200);
    overflow: hidden; transition: border-color 0.3s;
}
.ingredient-item.open { border-color: var(--blue-electric); }
.ingredient-header {
    width: 100%; display: flex; align-items: center;
    justify-content: space-between; padding: 20px 24px;
    font-size: 16px; cursor: pointer; text-align: left;
}
.ingredient-header-left { display: flex; align-items: center; gap: 16px; }
.ingredient-icon { font-size: 28px; }
.ingredient-header h3 { font-size: 18px; color: var(--navy); margin-bottom: 2px; }
.ingredient-dose { font-size: 13px; color: var(--blue-electric); font-weight: 600; }
.accordion-arrow { font-size: 12px; color: var(--gray-400); transition: transform 0.3s; }
.ingredient-item.open .accordion-arrow { transform: rotate(180deg); color: var(--blue-electric); }
.ingredient-body {
    max-height: 0; overflow: hidden; transition: max-height 0.4s var(--ease-smooth), padding 0.3s;
    padding: 0 24px;
}
.ingredient-item.open .ingredient-body {
    max-height: 300px; padding: 0 24px 24px;
}
.ingredient-body p { font-size: 15px; color: var(--gray-600); margin-bottom: 12px; line-height: 1.7; }
.ingredient-citation {
    font-size: 13px; color: var(--gray-500);
    background: var(--gray-50); padding: 12px 16px; border-radius: 8px;
}
.ingredient-citation a { color: var(--blue-electric); font-weight: 600; }
.ingredient-citation a:hover { text-decoration: underline; }

/* ===== BENEFITS ===== */
.benefits-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 20px; margin-bottom: 40px;
}
.benefit-card {
    background: var(--gray-50); border-radius: 14px;
    padding: 28px 24px; border: 1px solid var(--gray-200);
    transition: all 0.3s;
}
.benefit-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.06);
    border-color: var(--blue-electric);
}
.benefit-icon { font-size: 28px; margin-bottom: 12px; }
.benefit-card h3 { font-size: 16px; color: var(--navy); margin-bottom: 8px; }
.benefit-card p { font-size: 14px; color: var(--gray-500); }
.audience-bar { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.audience-chip {
    background: var(--navy); color: var(--white);
    padding: 10px 24px; border-radius: 100px;
    font-size: 14px; font-weight: 600;
}

/* ===== REVIEWS ===== */
.section-reviews { background: var(--gray-50); }
.review-summary { margin-top: 20px; display: flex; align-items: center; justify-content: center; gap: 12px; flex-wrap: wrap; }
.stars-lg { color: var(--gold); font-size: 22px; letter-spacing: 3px; }
.review-score { font-family: var(--font-display); font-size: 22px; color: var(--navy); }
.review-count { font-size: 14px; color: var(--gray-500); }
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.review-card {
    background: var(--white); border-radius: 16px;
    padding: 32px 28px; border: 1px solid var(--gray-200);
}
.review-stars { color: var(--gold); font-size: 16px; letter-spacing: 2px; margin-bottom: 16px; }
.review-text { font-size: 15px; color: var(--gray-600); line-height: 1.75; margin-bottom: 20px; font-style: italic; }
.review-author { display: flex; align-items: center; gap: 14px; }
.review-author img { width: 48px; height: 48px; border-radius: 50%; object-fit: cover; }
.review-author strong { display: block; font-size: 15px; color: var(--navy); }
.verified { color: var(--green-check); font-size: 13px; font-weight: 600; }
.review-location { display: block; font-size: 13px; color: var(--gray-400); }

/* ===== PRICING ===== */
.section-pricing {
    background: linear-gradient(180deg, var(--navy) 0%, var(--navy-light) 100%);
    color: var(--white);
}
.section-pricing .section-label { color: var(--gold); }
.section-pricing .section-header h2 { color: var(--white); }
.section-pricing .section-desc { color: var(--gray-400); }

.countdown-wrapper { text-align: center; margin-bottom: 40px; }
.countdown-label { font-size: 15px; color: var(--red-urgent); font-weight: 700; margin-bottom: 12px; }
.countdown {
    display: inline-flex; align-items: center; gap: 8px;
    background: rgba(255,255,255,0.06);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 12px; padding: 16px 28px;
}
.countdown-unit { text-align: center; }
.countdown-unit span {
    font-family: var(--font-display); font-size: 36px;
    color: var(--gold); display: block;
}
.countdown-unit small { font-size: 11px; color: var(--gray-400); text-transform: uppercase; letter-spacing: 1px; }
.countdown-sep { font-size: 28px; color: var(--gray-500); font-weight: 700; }

.pricing-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: 24px; align-items: center; margin-bottom: 32px;
}
.pricing-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px; padding: 24px; text-align: center;
    transition: all 0.3s;
}
.pricing-card:hover { transform: translateY(-4px); border-color: rgba(255,255,255,0.2); }
.pricing-card a { display: block; }
.pricing-card img { margin: 0 auto; max-width: 280px; }
.pricing-card-featured {
    border-color: var(--gold); position: relative;
    background: rgba(245,166,35,0.06);
    transform: scale(1.05);
}
.pricing-card-featured:hover { transform: scale(1.07); }
.popular-tag {
    position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
    background: var(--gold); color: var(--navy); font-size: 12px; font-weight: 800;
    padding: 4px 20px; border-radius: 100px; text-transform: uppercase; letter-spacing: 1px;
    white-space: nowrap;
}
.pricing-reassurance {
    display: flex; justify-content: center; flex-wrap: wrap; gap: 28px;
    font-size: 14px; color: var(--gray-300); margin-bottom: 24px;
}
.star-rating-bar { text-align: center; }
.star-rating-bar img { margin: 0 auto; opacity: 0.8; }

/* ===== GUARANTEE ===== */
.guarantee-card {
    display: grid; grid-template-columns: auto 1fr;
    gap: 48px; align-items: center;
    background: var(--gray-50); border-radius: 24px;
    padding: 56px 48px;
    border: 2px solid var(--gold);
}
.guarantee-image img { width: 200px; }
.guarantee-content .section-label { margin-bottom: 16px; }
.guarantee-content h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); color: var(--navy); margin-bottom: 20px; }
.guarantee-content p { font-size: 15px; color: var(--gray-600); margin-bottom: 16px; line-height: 1.75; }

/* ===== FAQ ===== */
.section-faq { background: var(--gray-50); }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
    background: var(--white); border-radius: 12px;
    margin-bottom: 10px; border: 1px solid var(--gray-200);
    overflow: hidden;
}
.faq-item.open { border-color: var(--blue-electric); }
.faq-question {
    width: 100%; display: flex; justify-content: space-between;
    align-items: center; padding: 20px 24px;
    font-size: 16px; font-weight: 600; color: var(--navy);
    text-align: left; gap: 16px;
}
.faq-toggle {
    font-size: 22px; color: var(--blue-electric);
    transition: transform 0.3s; flex-shrink: 0;
}
.faq-item.open .faq-toggle { transform: rotate(45deg); }
.faq-answer {
    max-height: 0; overflow: hidden;
    transition: max-height 0.4s var(--ease-smooth), padding 0.3s;
    padding: 0 24px;
}
.faq-item.open .faq-answer { max-height: 400px; padding: 0 24px 24px; }
.faq-answer p { font-size: 15px; color: var(--gray-600); line-height: 1.75; }

/* ===== FINAL CTA ===== */
.section-final-cta {
    background: linear-gradient(135deg, var(--navy), var(--navy-mid));
    color: var(--white); text-align: center;
}
.final-cta-card { max-width: 700px; margin: 0 auto; }
.final-cta-card h2 {
    font-size: clamp(1.6rem, 2.5vw, 2.2rem); color: var(--white); margin-bottom: 20px;
}
.final-cta-card p { font-size: 16px; color: var(--gray-300); margin-bottom: 28px; line-height: 1.75; }
.final-micro { font-size: 13px; color: var(--gray-400); margin-top: 16px; }

/* ===== FOOTER ===== */
.site-footer {
    background: var(--gray-900); color: var(--gray-400);
    padding: 60px 0 32px;
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr;
    gap: 48px; margin-bottom: 40px;
}
.footer-brand .logo-text { color: var(--white); margin-bottom: 12px; display: block; }
.footer-brand p { font-size: 14px; line-height: 1.7; }
.footer-links h4 { color: var(--white); font-size: 16px; margin-bottom: 16px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; transition: color 0.2s; }
.footer-links a:hover { color: var(--blue-electric); }
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 24px; text-align: center;
}
.footer-bottom p { font-size: 13px; margin-bottom: 12px; }
.disclaimer { font-size: 11px; color: var(--gray-500); max-width: 800px; margin: 0 auto; line-height: 1.6; }

/* ===== PURCHASE POPUP ===== */
.purchase-popup {
    position: fixed; bottom: 24px; left: 24px;
    z-index: 95; opacity: 0; transform: translateY(20px);
    pointer-events: none; transition: all 0.4s var(--ease-smooth);
}
.purchase-popup.show { opacity: 1; transform: translateY(0); pointer-events: auto; }
.popup-inner {
    background: var(--white); border-radius: 14px;
    padding: 16px 20px; box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    border: 1px solid var(--gray-200); position: relative;
    max-width: 340px;
}
.popup-close {
    position: absolute; top: 8px; right: 12px;
    font-size: 18px; color: var(--gray-400); cursor: pointer;
}
.popup-content { display: flex; align-items: center; gap: 12px; }
.popup-icon { font-size: 28px; }
.popup-name { font-weight: 700; font-size: 14px; color: var(--navy); }
.popup-action { font-size: 13px; color: var(--gray-500); }
.popup-action strong { color: var(--blue-electric); }
.popup-time { font-size: 12px; color: var(--gray-400); }

/* ===== SCROLL TOP ===== */
.scroll-top {
    position: fixed; bottom: 24px; right: 24px;
    width: 44px; height: 44px;
    background: var(--navy); color: var(--white);
    border-radius: 50%; font-size: 18px;
    display: flex; align-items: center; justify-content: center;
    z-index: 90; opacity: 0; transform: translateY(10px);
    transition: all 0.3s; cursor: pointer;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.scroll-top.show { opacity: 1; transform: translateY(0); }
.scroll-top:hover { background: var(--blue-electric); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; gap: 40px; }
    .hero-content { order: 1; }
    .hero-product { order: 0; }
    .hero-product img { max-width: 320px; }
    .hero-subtitle { margin-left: auto; margin-right: auto; }
    .hero-checklist { display: inline-block; text-align: left; }
    .hero-cta { justify-content: center; }
    .mechanism-grid { grid-template-columns: 1fr; }
    .pricing-grid { grid-template-columns: 1fr; max-width: 360px; margin-left: auto; margin-right: auto; }
    .pricing-card-featured { transform: scale(1); order: -1; }
    .pricing-card-featured:hover { transform: scale(1.02); }
    .guarantee-card { grid-template-columns: 1fr; text-align: center; gap: 24px; }
    .guarantee-image img { margin: 0 auto; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

@media (max-width: 768px) {
    :root { --section-pad: 56px; }
    .main-nav, .btn-nav { display: none; }
    .hamburger { display: flex; }
    .problem-grid { grid-template-columns: 1fr 1fr; }
    .reviews-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: clamp(1.8rem, 5vw, 2.6rem); }
    .announcement-bar { font-size: 12px; }
    .problem-callout { padding: 24px; }
}

@media (max-width: 576px) {
    :root { --section-pad: 40px; }
    .problem-grid { grid-template-columns: 1fr; }
    .benefits-grid { grid-template-columns: 1fr; }
    .hero-cta { flex-direction: column; }
    .hero-cta .btn { width: 100%; }
    .countdown-unit span { font-size: 28px; }
    .audience-bar { gap: 10px; }
    .audience-chip { font-size: 12px; padding: 8px 16px; }
    .pricing-reassurance { flex-direction: column; align-items: center; gap: 12px; }
}