/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Montserrat', sans-serif;
    color: #1a1a2e;
    background: #fff;
    overflow-x: hidden;
}

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

h1,
h2,
h3 {
    font-family: 'Playfair Display', serif;
}

.section-title {
    text-align: center;
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    margin-bottom: 12px;
}

.section-sub {
    text-align: center;
    color: #777;
    margin-bottom: 40px;
    font-size: .95rem;
}

.highlight {
    background: linear-gradient(135deg, #C71585, #B76E79);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== ANIMATIONS ===== */
@keyframes pulse {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(199, 21, 133, .4)
    }

    50% {
        box-shadow: 0 0 0 18px rgba(199, 21, 133, 0)
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0)
    }

    50% {
        transform: translateY(-12px)
    }
}

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px)
    }

    to {
        opacity: 1;
        transform: translateY(0)
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0
    }

    100% {
        background-position: 200% 0
    }
}

@keyframes scrollDown {
    0% {
        transform: translateY(0);
        opacity: 1
    }

    100% {
        transform: translateY(12px);
        opacity: 0
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 40px rgba(199, 21, 133, .3)
    }

    50% {
        box-shadow: 0 0 80px rgba(199, 21, 133, .6)
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all .7s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ===== LOGO STYLES ===== */
.hero-logo {
    width: 200px;
    margin-bottom: 24px;
    filter: brightness(0) invert(1);
}

.tube-logo {
    width: 80px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, .2));
}

.footer-logo {
    height: 40px;
    margin-bottom: 12px;
    filter: brightness(0.85) sepia(1) hue-rotate(5deg) saturate(3);
}

/* ===== HERO ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
    color: #fff;
    position: relative;
    padding: 100px 20px 60px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 50%, rgba(199, 21, 133, .15) 0%, transparent 50%), radial-gradient(circle at 70% 50%, rgba(183, 110, 121, .1) 0%, transparent 50%);
    animation: float 8s ease-in-out infinite;
}

.hero-particles {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(2px 2px at 20% 30%, rgba(255, 209, 220, .3), transparent), radial-gradient(2px 2px at 40% 70%, rgba(255, 209, 220, .2), transparent), radial-gradient(2px 2px at 60% 20%, rgba(183, 110, 121, .3), transparent), radial-gradient(2px 2px at 80% 60%, rgba(255, 209, 220, .2), transparent), radial-gradient(1px 1px at 10% 80%, rgba(255, 255, 255, .15), transparent), radial-gradient(1px 1px at 90% 40%, rgba(255, 255, 255, .1), transparent);
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    animation: fadeUp 1s ease;
}

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

.hero-badge {
    display: inline-block;
    background: rgba(199, 21, 133, .2);
    border: 1px solid rgba(199, 21, 133, .4);
    color: #FFD1DC;
    padding: 8px 24px;
    border-radius: 50px;
    font-size: .85rem;
    margin-bottom: 24px;
    letter-spacing: 1px;
    backdrop-filter: blur(10px);
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    line-height: 1.15;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.15rem);
    color: rgba(255, 255, 255, .8);
    line-height: 1.6;
    margin-bottom: 32px;
    font-weight: 300;
    max-width: 90%;
}

.hero-subtitle strong {
    color: #FFD1DC;
    font-weight: 600;
}

.hero-price {
    margin-bottom: 36px;
    display: flex;
    align-items: baseline;
}

.price-label {
    font-size: .9rem;
    color: rgba(255, 255, 255, .6);
}

.price-value {
    font-size: 3.5rem;
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    background: linear-gradient(135deg, #FFD1DC, #B76E79);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 0 8px;
}

.price-unit {
    font-size: 1rem;
    color: rgba(255, 255, 255, .6);
}

.hero-cta-group {
    margin-bottom: 40px;
}

.btn-cta {
    display: inline-block;
    padding: 18px 40px;
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, #C71585, #B76E79);
    border-radius: 50px;
    text-decoration: none;
    transition: all .3s ease;
    box-shadow: 0 10px 30px rgba(199, 21, 133, .4);
    font-family: 'Montserrat', sans-serif;
    text-align: center;
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(199, 21, 133, .6);
}

.hero-trust {
    display: flex;
    gap: 20px;
    margin-top: 16px;
    flex-wrap: wrap;
    font-size: .85rem;
    color: rgba(255, 255, 255, .7);
}

.trust-icon {
    color: #A8E6CF;
    font-style: normal;
    margin-right: 4px;
}

.hero-stats {
    display: flex;
    gap: 30px;
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding-top: 24px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-size: 1.8rem;
    font-weight: 700;
    color: #fff;
    font-family: 'Playfair Display', serif;
}

.stat-label {
    font-size: .8rem;
    color: rgba(255, 255, 255, .5);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Hero Image Showcase */
.hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    min-height: 500px;
}

.hero-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(199, 21, 133, .4) 0%, transparent 70%);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    filter: blur(40px);
    animation: pulseGlow 4s infinite alternate;
}

.hero-product-showcase {
    position: relative;
    z-index: 2;
    animation: float 6s ease-in-out infinite;
}

.hero-tube {
    transform: scale(1.2);
}

.hero-tube-logo {
    width: 90px;
}

.floating-bubble {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 255, 255, .2), rgba(255, 255, 255, .05));
    backdrop-filter: blur(5px);
    border: 1px solid rgba(255, 255, 255, .1);
}

.b1 {
    width: 60px;
    height: 60px;
    top: -20px;
    right: -40px;
    animation: float 4s ease-in-out infinite reverse;
}

.b2 {
    width: 40px;
    height: 40px;
    bottom: 20px;
    left: -50px;
    animation: float 5s ease-in-out infinite 1s;
}

.floating-badge {
    position: absolute;
    bottom: -30px;
    right: -20px;
    background: rgba(255, 255, 255, .1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, .2);
    padding: 10px 20px;
    border-radius: 20px;
    color: #fff;
    font-weight: 600;
    font-size: .9rem;
    box-shadow: 0 10px 20px rgba(0, 0, 0, .2);
    animation: float 7s ease-in-out infinite .5s;
}

@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-content {
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-subtitle {
        max-width: 100%;
    }

    .hero-trust {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-image-wrapper {
        min-height: 400px;
    }

    .hero-tube {
        transform: scale(1);
    }
}


.scroll-indicator {
    position: absolute;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, .4);
    font-size: .75rem;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid rgba(255, 255, 255, .4);
    border-bottom: 2px solid rgba(255, 255, 255, .4);
    transform: rotate(45deg);
    animation: scrollDown 1.5s infinite;
}

/* ===== USP BAR ===== */
.usp-bar {
    background: linear-gradient(135deg, #C71585, #B76E79);
    padding: 50px 20px;
}

.usp-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.usp-item {
    text-align: center;
    color: #fff;
}

.usp-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.usp-item h3 {
    font-size: 1rem;
    margin-bottom: 6px;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
}

.usp-item p {
    font-size: .85rem;
    opacity: .85;
}

/* ===== PROBLEM SECTION ===== */
.problem-section {
    padding: 100px 20px;
    background: #fdf6f8;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 800px;
    margin: 0 auto 40px;
}

.problem-card {
    background: #fff;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(199, 21, 133, .08);
    transition: all .3s ease;
    border: 1px solid rgba(199, 21, 133, .08);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(199, 21, 133, .15);
}

.problem-emoji {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.problem-card p {
    color: #555;
    line-height: 1.5;
}

.solution-arrow {
    text-align: center;
}

.solution-arrow span {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 8px;
    animation: scrollDown 1.5s infinite;
}

.solution-arrow p {
    font-size: 1.2rem;
    font-weight: 600;
    color: #C71585;
}

/* ===== RESULTS GALLERY ===== */
.results-section {
    padding: 100px 20px;
    background: #fff;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.result-card {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(199, 21, 133, .12);
    transition: all .4s ease;
    border: 1px solid rgba(199, 21, 133, .08);
    background: #fff;
}

.result-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 50px rgba(199, 21, 133, .2);
}

.result-img-wrap {
    overflow: hidden;
    aspect-ratio: 1/1;
}

.result-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.result-card:hover .result-img {
    transform: scale(1.05);
}

.result-caption {
    padding: 20px;
    text-align: center;
}

.result-badge {
    display: inline-block;
    background: linear-gradient(135deg, #C71585, #B76E79);
    color: #fff;
    padding: 6px 16px;
    border-radius: 50px;
    font-size: .75rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.result-caption p {
    color: #555;
    font-size: .9rem;
    line-height: 1.5;
}

/* ===== PRODUCT SECTION ===== */
.product-section {
    padding: 100px 20px;
    background: #fff;
}

.product-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.product-visual {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.product-glow {
    position: absolute;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(199, 21, 133, .2), transparent 70%);
    animation: glow 3s infinite;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.product-mockup {
    position: relative;
    z-index: 2;
    animation: float 4s ease-in-out infinite;
}

.tube {
    width: 120px;
    height: 280px;
    position: relative;
}

.tube-cap {
    width: 50px;
    height: 30px;
    background: linear-gradient(135deg, #d4af37, #f5e6a3, #d4af37);
    border-radius: 6px 6px 0 0;
    margin: 0 auto;
    box-shadow: 0 2px 8px rgba(0, 0, 0, .15);
}

.tube-body {
    width: 120px;
    height: 250px;
    background: linear-gradient(180deg, #FFD1DC 0%, #f8b4c8 40%, #C71585 100%);
    border-radius: 0 0 40px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 40px rgba(199, 21, 133, .3);
    position: relative;
    overflow: hidden;
}

.tube-body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20%;
    width: 30%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .2), transparent);
}

.tube-brand {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, .2);
}

.tube-name {
    font-size: .65rem;
    color: #fff;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-top: 2px;
}

.tube-sub {
    font-size: .55rem;
    color: rgba(255, 255, 255, .8);
    margin-top: 8px;
    letter-spacing: 2px;
}

.product-badge-wrap {
    margin-top: 24px;
    position: relative;
    z-index: 2;
}

.badge-safe {
    background: linear-gradient(135deg, #C71585, #B76E79);
    color: #fff;
    padding: 10px 24px;
    border-radius: 50px;
    font-size: .85rem;
    font-weight: 600;
    display: inline-block;
}

.product-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 16px;
    border-radius: 12px;
    transition: all .3s ease;
}

.info-item:hover {
    background: #fdf6f8;
}

.info-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.info-item strong {
    font-size: 1rem;
    display: block;
    margin-bottom: 4px;
}

.info-item p {
    font-size: .9rem;
    color: #666;
    line-height: 1.4;
}

/* ===== QUALITY SECTION ===== */
.quality-section {
    padding: 80px 20px;
    background: linear-gradient(135deg, #16213e, #1a1a2e);
    position: relative;
    overflow: hidden;
}

.quality-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(199, 21, 133, .05) 0%, transparent 50%);
    pointer-events: none;
}

.quality-section .section-title {
    color: #fff;
}

.quality-section .section-sub {
    color: rgba(255, 255, 255, .7);
}

.quality-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.quality-card {
    background: rgba(255, 255, 255, .03);
    border: 1px solid rgba(255, 255, 255, .05);
    border-radius: 24px;
    padding: 40px 30px;
    text-align: center;
    transition: all .4s ease;
    backdrop-filter: blur(10px);
    position: relative;
    z-index: 1;
}

.quality-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, .08);
    border-color: rgba(199, 21, 133, .3);
    box-shadow: 0 15px 40px rgba(0, 0, 0, .3);
}

.q-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    display: inline-block;
    padding: 20px;
    background: linear-gradient(135deg, rgba(199, 21, 133, .1), rgba(199, 21, 133, .0));
    border-radius: 50%;
    box-shadow: inset 0 0 20px rgba(199, 21, 133, .1);
}

.quality-card h3 {
    color: #fff;
    font-size: 1.4rem;
    margin-bottom: 15px;
    font-family: 'Playfair Display', serif;
}

.quality-card p {
    color: rgba(255, 255, 255, .7);
    font-size: 1.05rem;
    line-height: 1.6;
}

.quality-card p strong {
    color: #C71585;
}

.q-link {
    color: #42A5F5;
    text-decoration: none;
    transition: color .3s;
}

.q-link:hover {
    color: #64B5F6;
    text-decoration: underline;
}

/* Certificate Showcase */
.certificate-showcase {
    margin-top: 60px;
    text-align: center;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 24px;
    padding: 40px 30px;
    backdrop-filter: blur(10px);
}

.certificate-title {
    color: #fff;
    font-family: 'Playfair Display', serif;
    font-size: 1.4rem;
    margin-bottom: 12px;
}

.certificate-sub {
    color: rgba(255, 255, 255, .7);
    font-size: .95rem;
    margin-bottom: 30px;
}

.certificate-sub strong {
    color: #C71585;
}

.certificate-img-wrap {
    max-width: 500px;
    margin: 0 auto;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, .4);
    border: 2px solid rgba(255, 255, 255, .15);
}

.certificate-img {
    width: 100%;
    height: auto;
    display: block;
}

.certificate-note {
    color: rgba(255, 255, 255, .6);
    font-size: .85rem;
    margin-top: 20px;
}

.certificate-note strong {
    color: #fff;
}

/* ===== HOW TO ===== */
.howto-section {
    padding: 100px 20px;
    background: #fdf6f8;
}

.steps-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.step-card {
    background: #fff;
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    width: 200px;
    box-shadow: 0 4px 20px rgba(199, 21, 133, .08);
    transition: all .3s ease;
    border: 1px solid rgba(199, 21, 133, .05);
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(199, 21, 133, .15);
}

.step-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, #C71585, #B76E79);
    color: #fff;
    font-weight: 700;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.step-card h3 {
    margin-bottom: 8px;
    font-size: 1rem;
}

.step-card p {
    font-size: .85rem;
    color: #666;
    line-height: 1.4;
}

.step-connector {
    font-size: 1.5rem;
    color: #C71585;
    font-weight: 700;
}

/* ===== TESTIMONIALS ===== */
.testimonials {
    padding: 100px 20px;
    background: #fff;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.testimonial-card {
    background: #fdf6f8;
    border-radius: 16px;
    padding: 32px;
    border: 1px solid rgba(199, 21, 133, .1);
    transition: all .3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(199, 21, 133, .12);
}

.stars {
    margin-bottom: 16px;
    font-size: 1rem;
}

.testimonial-card p {
    font-style: italic;
    color: #444;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: .95rem;
}

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

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    object-position: top;
    border: 2px solid #C71585;
}

.reviewer span {
    font-weight: 600;
    font-size: .9rem;
}

/* Facebook Proof Section */
.fb-proof-section {
    text-align: center;
    margin-top: 40px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    align-items: start;
}

.fb-proof-link {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, .12);
    transition: all .4s ease;
}

.fb-proof-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(24, 119, 242, .2);
}

.fb-proof-img {
    width: 100%;
    height: 500px;
    object-fit: cover;
    object-position: top;
    display: block;
    border-radius: 16px 16px 0 0;
}

.fb-proof-caption {
    display: block;
    padding: 14px 20px;
    background: linear-gradient(135deg, #1877F2, #42A5F5);
    color: #fff;
    font-weight: 600;
    font-size: .95rem;
    text-align: center;
}

.fb-post-link {
    text-align: center;
    margin-top: 32px;
}

.btn-fb-post {
    display: inline-block;
    padding: 14px 36px;
    background: linear-gradient(135deg, #1877F2, #42A5F5);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: .95rem;
    transition: all .3s ease;
    box-shadow: 0 4px 15px rgba(24, 119, 242, .3);
}

.btn-fb-post:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(24, 119, 242, .4);
}

/* ===== FAQ ===== */
.faq-section {
    padding: 100px 20px;
    background: #fdf6f8;
}

.faq-list {
    max-width: 750px;
    margin: 40px auto 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(199, 21, 133, .08);
    transition: all .3s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 15px rgba(199, 21, 133, .1);
}

.faq-q {
    padding: 20px 24px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: .95rem;
}

.faq-toggle {
    font-size: 1.5rem;
    color: #C71585;
    transition: transform .3s ease;
    font-weight: 300;
}

.faq-item.open .faq-toggle {
    transform: rotate(45deg);
}

.faq-a {
    max-height: 0;
    overflow: hidden;
    transition: max-height .4s ease, padding .4s ease;
}

.faq-item.open .faq-a {
    max-height: 200px;
    padding: 0 24px 20px;
}

.faq-a p {
    color: #666;
    line-height: 1.6;
    font-size: .9rem;
}

/* ===== ORDER FORM ===== */
.order-section {
    padding: 100px 20px;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
}

.order-section .section-title {
    color: #fff;
}

.order-section .section-sub {
    color: rgba(255, 255, 255, .6);
}

.order-form-wrap {
    max-width: 650px;
    margin: 0 auto;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    border-radius: 24px;
    padding: 40px;
    backdrop-filter: blur(10px);
}

.form-benefits {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 32px;
}

.benefit-item {
    color: rgba(255, 255, 255, .85);
    font-size: .9rem;
    padding: 8px 12px;
    background: rgba(255, 255, 255, .05);
    border-radius: 8px;
}

.order-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    color: rgba(255, 255, 255, .8);
    font-size: .9rem;
    font-weight: 500;
}

.required {
    color: #C71585;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: 12px;
    background: rgba(255, 255, 255, .08);
    color: #fff;
    font-size: 1rem;
    font-family: 'Montserrat', sans-serif;
    transition: all .3s ease;
    outline: none;
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, .35);
}

.form-group input:focus,
.form-group select:focus {
    border-color: #C71585;
    box-shadow: 0 0 0 3px rgba(199, 21, 133, .2);
    background: rgba(255, 255, 255, .12);
}

.form-group select {
    cursor: pointer;
}

.form-group select option {
    background: #1a1a2e;
    color: #fff;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.btn-submit {
    padding: 18px;
    border: none;
    border-radius: 50px;
    background: linear-gradient(135deg, #C71585, #B76E79);
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all .3s ease;
    font-family: 'Montserrat', sans-serif;
}

.btn-submit:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(199, 21, 133, .4);
}

.btn-submit:disabled {
    opacity: .6;
    cursor: not-allowed;
    transform: none;
}

.form-note {
    text-align: center;
    color: rgba(255, 255, 255, .4);
    font-size: .8rem;
    margin-top: 8px;
}

/* ===== POPUP MODAL ===== */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, .7);
    backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn .3s ease;
}

.popup-content {
    background: #fff;
    border-radius: 24px;
    padding: 48px 40px;
    max-width: 460px;
    width: 90%;
    text-align: center;
    position: relative;
    animation: popIn .4s cubic-bezier(.34, 1.56, .64, 1);
    box-shadow: 0 25px 80px rgba(0, 0, 0, .3);
}

.popup-close {
    position: absolute;
    top: 16px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: #999;
    cursor: pointer;
    transition: color .2s;
    line-height: 1;
}

.popup-close:hover {
    color: #333;
}

.popup-confetti {
    font-size: 3rem;
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 1s ease infinite;
}

.popup-icon {
    font-size: 4rem;
    margin: 16px 0;
}

.popup-content h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    color: #1a1a2e;
    margin-bottom: 12px;
}

.popup-thanks {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 8px;
}

.popup-thanks strong {
    color: #C71585;
}

.popup-info {
    font-size: 1rem;
    color: #555;
    margin-bottom: 0;
}

.popup-info strong {
    color: #C71585;
}

.popup-divider {
    width: 60px;
    height: 3px;
    background: linear-gradient(135deg, #C71585, #B76E79);
    margin: 20px auto;
    border-radius: 2px;
}

.popup-tip {
    font-size: .9rem;
    color: #777;
    margin-bottom: 16px;
}

.popup-btn-messenger {
    display: inline-block;
    padding: 14px 36px;
    background: linear-gradient(135deg, #0084FF, #00C6FF);
    color: #fff;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: all .3s ease;
    box-shadow: 0 4px 15px rgba(0, 132, 255, .3);
}

.popup-btn-messenger:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 132, 255, .4);
}

.popup-note {
    font-size: .85rem;
    color: #999;
    margin-top: 16px;
}

@keyframes popIn {
    from {
        opacity: 0;
        transform: scale(.7);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* ===== CTA SECTION ===== */
.cta-section {
    padding: 100px 20px;
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
}

.cta-box {
    text-align: center;
    max-width: 650px;
    margin: 0 auto;
}

.cta-box h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    color: #fff;
    margin-bottom: 16px;
}

.cta-box>p {
    color: rgba(255, 255, 255, .7);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.cta-price-box {
    margin-bottom: 36px;
}

.cta-price {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #FFD1DC, #B76E79);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-price-note {
    color: rgba(255, 255, 255, .6);
    font-size: 1rem;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.btn-messenger,
.btn-zalo {
    padding: 16px 36px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all .3s ease;
}

.btn-messenger {
    background: linear-gradient(135deg, #0084FF, #00C6FF);
    color: #fff;
}

.btn-zalo {
    background: linear-gradient(135deg, #0068FF, #0099FF);
    color: #fff;
}

.btn-messenger:hover,
.btn-zalo:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 132, 255, .4);
}

.cta-note {
    color: rgba(255, 255, 255, .5);
    font-size: .85rem;
}

/* ===== FOOTER ===== */
footer {
    background: #0d0d1a;
    padding: 40px 20px;
    text-align: center;
    color: rgba(255, 255, 255, .4);
    font-size: .85rem;
}

.footer-brand {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: #B76E79;
    margin-bottom: 8px;
}

/* ===== FLOATING CTA ===== */
.floating-cta {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: linear-gradient(135deg, #C71585, #B76E79);
    color: #fff;
    padding: 16px 28px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    z-index: 1000;
    box-shadow: 0 6px 25px rgba(199, 21, 133, .4);
    transition: all .3s ease;
    animation: pulse 2s infinite;
    font-size: .95rem;
    opacity: 0;
    transform: translateY(20px);
}

.floating-cta.visible {
    opacity: 1;
    transform: translateY(0);
}

.floating-cta:hover {
    transform: translateY(-3px) scale(1.05);
}

/* ===== RESPONSIVE - TABLET ===== */
@media(max-width:1024px) {
    .product-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .product-visual {
        order: -1;
    }
}

/* ===== RESPONSIVE - MOBILE ===== */
@media(max-width:768px) {

    /* --- Global --- */
    .container {
        padding: 0 16px;
    }

    .section-title {
        font-size: 1.5rem;
        line-height: 1.3;
    }

    .section-sub {
        font-size: .9rem;
    }

    /* --- Hero --- */
    .hero {
        padding: 30px 16px 30px;
        min-height: auto;
    }

    .hero-layout {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 20px;
    }

    .hero .logo {
        max-width: 140px;
        margin-bottom: 8px;
    }

    .hero-badge {
        font-size: .75rem;
        padding: 8px 16px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero-desc {
        font-size: .9rem;
    }

    .hero-price .price-value {
        font-size: 2.5rem;
    }

    .hero-cta-group .btn-cta {
        font-size: .9rem;
        padding: 14px 24px;
    }

    .trust-bar {
        flex-direction: column;
        gap: 6px;
        font-size: .8rem;
    }

    .hero-image-wrapper {
        max-width: 250px;
        margin: 0 auto;
    }

    /* --- USP Bar --- */
    .usp-bar {
        display: none;
    }

    .usp-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

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

    .usp-icon {
        font-size: 1.5rem;
        width: 50px;
        height: 50px;
        margin: 0 auto 10px;
    }

    .usp-item h3 {
        font-size: .85rem;
    }

    .usp-item p {
        font-size: .75rem;
    }

    /* --- Problem Section --- */
    .problem-section {
        padding: 60px 16px;
    }

    .problem-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .problem-card {
        padding: 20px;
    }

    .problem-emoji {
        font-size: 2rem;
    }

    .problem-card p {
        font-size: .85rem;
    }

    /* --- Results Gallery --- */
    .results-section {
        padding: 60px 16px;
    }

    .results-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .result-card {
        max-width: 100%;
    }

    /* --- Product Section --- */
    .product-section {
        padding: 60px 16px;
    }

    .feature-item {
        font-size: .85rem;
    }

    .product-3d-container {
        width: 200px;
        height: 260px;
    }

    /* --- Quality Section --- */
    .quality-section {
        padding: 60px 16px;
    }

    .quality-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .quality-card {
        padding: 16px 12px;
    }

    .q-icon {
        font-size: 1.5rem;
    }

    .quality-card h3 {
        font-size: .85rem;
    }

    .quality-card p {
        font-size: .75rem;
    }

    /* Certificate */
    .certificate-showcase {
        margin-top: 40px;
        padding: 24px 16px;
    }

    .certificate-title {
        font-size: 1.1rem;
    }

    .certificate-img-wrap {
        max-width: 100%;
    }

    /* --- How-To Section --- */
    .howto-section {
        padding: 60px 16px;
    }

    .steps-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .step-connector {
        display: none;
    }

    .step-card {
        width: 100%;
        max-width: none;
        padding: 16px 12px;
    }

    .step-number {
        width: 32px;
        height: 32px;
        font-size: .85rem;
    }

    .step-card h3 {
        font-size: .85rem;
    }

    .step-card p {
        font-size: .75rem;
    }

    /* --- Testimonials --- */
    .testimonials {
        padding: 60px 16px;
    }

    .testimonial-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .testimonial-card {
        padding: 20px;
    }

    .testimonial-card p {
        font-size: .85rem;
    }

    /* Facebook Posts - 1 column on mobile */
    .fb-proof-section {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 30px;
    }

    .fb-proof-img {
        height: 400px;
    }

    .fb-proof-caption {
        font-size: .85rem;
        padding: 10px;
    }

    /* --- FAQ Section --- */
    .faq-section {
        padding: 60px 16px;
    }

    .faq-item {
        padding: 16px;
    }

    .faq-q {
        font-size: .9rem;
    }

    .faq-a {
        font-size: .82rem;
    }

    /* --- Order Form --- */
    .order-section {
        padding: 60px 16px;
    }

    .order-wrapper {
        padding: 24px 16px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        font-size: 16px;
        /* Prevents iOS zoom on focus */
    }

    .order-title {
        font-size: 1.3rem;
    }

    /* --- CTA Section --- */
    .cta-section {
        padding: 60px 16px;
    }

    .cta-section h2 {
        font-size: 1.3rem;
    }

    .cta-price {
        font-size: 2rem;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn-messenger,
    .btn-zalo {
        width: 100%;
        text-align: center;
    }

    /* --- Floating CTA --- */
    .floating-cta {
        bottom: 10px;
        right: 10px;
        padding: 10px 16px;
        font-size: .8rem;
    }

    /* --- Footer --- */
    .footer {
        padding: 30px 16px;
        font-size: .8rem;
    }
}

/* ===== RESPONSIVE - SMALL MOBILE ===== */
@media(max-width:480px) {
    .hero h1 {
        font-size: 1.6rem;
    }

    .hero-price .price-value {
        font-size: 2.2rem;
    }

    .section-title {
        font-size: 1.3rem;
    }

    .usp-grid {
        grid-template-columns: 1fr;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .fb-proof-img {
        height: 350px;
    }
}