/* ===== CSS Variables ===== */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #a5b4fc;
    --accent: #06b6d4;
    --accent-dark: #0891b2;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --gradient-1: linear-gradient(135deg, #6366f1, #06b6d4);
    --gradient-2: linear-gradient(135deg, #f43f5e, #f59e0b);
    --gradient-3: linear-gradient(135deg, #10b981, #06b6d4);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.4);
    --radius: 12px;
    --radius-lg: 20px;
}

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

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

body {
    font-family: 'Noto Sans SC', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    transition: all 0.3s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.4rem;
    font-weight: 800;
}

.logo-icon {
    font-size: 1.6rem;
}

.logo-text .highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.nav-cta {
    background: var(--gradient-1);
    color: white !important;
    padding: 8px 20px;
    border-radius: 8px;
    font-weight: 600 !important;
}

.nav-cta:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    font-family: inherit;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary-light);
    background: rgba(99, 102, 241, 0.05);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
    border-radius: 14px;
}

/* ===== Hero ===== */
.hero {
    position: relative;
    padding: 160px 0 100px;
    text-align: center;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-bg-effects {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.floating-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: float 8s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--primary);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--accent);
    bottom: -5%;
    right: -5%;
    animation-delay: -3s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: #f43f5e;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -5s;
    opacity: 0.2;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease;
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.gradient-text {
    background: var(--gradient-3);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.gradient-text-red {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 60px;
    animation: fadeInUp 0.8s ease 0.3s both;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.8s ease 0.4s both;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Section Common ===== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 800;
    margin-bottom: 12px;
    line-height: 1.3;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== Contact CTA Section ===== */
.contact-cta-section {
    padding: 80px 0;
    position: relative;
}

.contact-cta-card {
    display: flex;
    align-items: center;
    gap: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.contact-cta-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
}

.contact-cta-card::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: var(--primary);
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.08;
    top: -100px;
    right: -80px;
    pointer-events: none;
}

.contact-cta-left {
    flex: 1;
}

.contact-cta-left h2 {
    font-size: 1.8rem;
    font-weight: 800;
    line-height: 1.4;
    margin-bottom: 12px;
}

.contact-cta-left p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: 16px;
}

.contact-cta-highlight {
    display: inline-block;
    background: var(--gradient-1);
    color: white;
    padding: 10px 24px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1.1rem;
    letter-spacing: 1px;
    animation: pulse-glow 2.5s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.3); }
    50% { box-shadow: 0 0 35px rgba(99, 102, 241, 0.55); }
}

.contact-cta-right {
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-width: 300px;
}

.contact-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1.05rem;
    color: white;
    transition: all 0.3s ease;
    text-align: left;
    border: none;
    cursor: pointer;
}

.contact-btn:hover {
    transform: translateY(-2px);
}

.contact-btn-icon {
    font-size: 1.4rem;
}

.contact-wechat {
    background: linear-gradient(135deg, #07c160, #06ad56);
    box-shadow: 0 4px 15px rgba(7, 193, 96, 0.3);
}

.contact-wechat:hover {
    box-shadow: 0 8px 25px rgba(7, 193, 96, 0.45);
    color: white;
}

.contact-whatsapp {
    background: linear-gradient(135deg, #25d366, #128c7e);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.contact-whatsapp:hover {
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.45);
    color: white;
}

.contact-line {
    background: linear-gradient(135deg, #00b900, #009900);
    box-shadow: 0 4px 15px rgba(0, 185, 0, 0.3);
}

.contact-line:hover {
    box-shadow: 0 8px 25px rgba(0, 185, 0, 0.45);
    color: white;
}

.contact-limited-text {
    text-align: center;
    color: var(--warning);
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 4px;
    animation: blink-text 2s ease-in-out infinite;
}

@keyframes blink-text {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===== Features ===== */
.features {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(30, 41, 59, 0.5) 50%, var(--bg-dark) 100%);
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-1);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
    display: block;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ===== How It Works ===== */
.how-it-works {
    padding: 100px 0;
}

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    flex: 1;
    min-width: 240px;
    max-width: 320px;
    transition: all 0.3s ease;
}

.step-card:hover {
    transform: translateY(-4px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-xl);
}

.step-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 16px;
}

.step-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 0.92rem;
}

.step-arrow {
    font-size: 2rem;
    color: var(--text-muted);
    font-weight: 300;
}

/* ===== Assessment Form ===== */
.assessment {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(30, 41, 59, 0.5) 50%, var(--bg-dark) 100%);
}

.form-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.form-wrapper::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-1);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    margin-bottom: 36px;
}

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

.form-group label {
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.label-icon {
    font-size: 1.1rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 14px 18px;
    background: rgba(15, 23, 42, 0.8);
    border: 1.5px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    outline: none;
}

.form-group input::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-group select option {
    background: var(--bg-dark);
    color: var(--text-primary);
}

.bp-inputs {
    display: flex;
    align-items: center;
    gap: 10px;
}

.bp-inputs input {
    flex: 1;
}

.bp-separator {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-muted);
}

.btn-submit {
    width: 100%;
    padding: 18px;
    font-size: 1.15rem;
    border-radius: 14px;
    position: relative;
}

.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ===== Result Section ===== */
.result-section {
    padding: 80px 0 100px;
    animation: fadeInUp 0.6s ease;
}

.result-wrapper {
    max-width: 900px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 48px;
    box-shadow: var(--shadow-xl);
}

.result-header {
    text-align: center;
    margin-bottom: 40px;
}

.result-header h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 8px;
}

.result-date {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Age Comparison */
.age-comparison {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 30px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.age-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 32px 48px;
    border-radius: var(--radius-lg);
    min-width: 200px;
}

.actual-age {
    background: rgba(100, 116, 139, 0.15);
    border: 1px solid rgba(100, 116, 139, 0.3);
}

.bio-age {
    border: 2px solid;
    position: relative;
}

.bio-age.younger {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success);
}

.bio-age.older {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--danger);
}

.bio-age.same {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--primary);
}

.age-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.age-value {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1;
}

.actual-age .age-value {
    color: var(--text-secondary);
}

.bio-age.younger .age-value {
    color: var(--success);
}

.bio-age.older .age-value {
    color: var(--danger);
}

.bio-age.same .age-value {
    color: var(--primary);
}

.age-unit {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.age-vs {
    font-size: 2.5rem;
    color: var(--text-muted);
}

.age-summary {
    text-align: center;
    font-size: 1.15rem;
    font-weight: 600;
    padding: 16px 24px;
    border-radius: var(--radius);
    margin-bottom: 40px;
    line-height: 1.7;
}

.age-summary.younger {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.age-summary.older {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.age-summary.same {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-light);
    border: 1px solid rgba(99, 102, 241, 0.2);
}

/* Metrics */
.metrics-section {
    margin-bottom: 40px;
}

.metrics-section h3,
.advice-section h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.metric-card {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    transition: all 0.3s ease;
}

.metric-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
}

.metric-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.metric-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.metric-badge {
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
}

.badge-normal {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.badge-warning {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.badge-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.metric-value {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.metric-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.metric-bar {
    height: 6px;
    background: rgba(255,255,255,0.08);
    border-radius: 3px;
    margin-top: 10px;
    overflow: hidden;
}

.metric-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 1s ease;
}

/* Advice */
.advice-section {
    margin-bottom: 36px;
}

.advice-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.advice-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 20px;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.3s ease;
}

.advice-item:hover {
    border-color: rgba(99, 102, 241, 0.3);
}

.advice-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.advice-content h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.advice-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Detailed Report CTA */
.detailed-report-cta {
    position: relative;
    margin-bottom: 36px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    inset: -2px;
    background: var(--gradient-1);
    border-radius: var(--radius-lg);
    z-index: 0;
    animation: rotate-border 4s linear infinite;
}

@keyframes rotate-border {
    0% { filter: hue-rotate(0deg); }
    100% { filter: hue-rotate(360deg); }
}

.cta-inner {
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.97), rgba(30, 41, 59, 0.97));
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    text-align: center;
}

.cta-badge {
    display: inline-block;
    padding: 6px 18px;
    background: var(--gradient-2);
    color: white;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 16px;
    animation: pulse-glow 2s ease-in-out infinite;
}

.cta-inner h3 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.cta-inner > p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    max-width: 600px;
    margin: 0 auto 28px;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 18px;
}

.cta-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 22px;
    border-radius: 12px;
    color: white;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s ease;
    min-width: 200px;
}

.cta-btn:hover {
    transform: translateY(-3px);
    color: white;
}

.cta-btn-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
}

.cta-btn-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.cta-btn-label {
    font-weight: 700;
    font-size: 1rem;
}

.cta-btn-desc {
    font-size: 0.75rem;
    opacity: 0.85;
    font-weight: 400;
}

.cta-wechat {
    background: linear-gradient(135deg, #07c160, #06ad56);
    box-shadow: 0 4px 15px rgba(7, 193, 96, 0.3);
}

.cta-wechat:hover {
    box-shadow: 0 8px 25px rgba(7, 193, 96, 0.5);
}

.cta-whatsapp {
    background: linear-gradient(135deg, #25d366, #128c7e);
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3);
}

.cta-whatsapp:hover {
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.5);
}

.cta-line {
    background: linear-gradient(135deg, #00b900, #009900);
    box-shadow: 0 4px 15px rgba(0, 185, 0, 0.3);
}

.cta-line:hover {
    box-shadow: 0 8px 25px rgba(0, 185, 0, 0.5);
}

.cta-limited {
    color: var(--warning);
    font-size: 0.88rem;
    font-weight: 600;
    animation: blink-text 2s ease-in-out infinite;
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ===== Footer ===== */
.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
}

.footer-content {
    text-align: center;
}

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.footer-disclaimer {
    color: var(--text-muted);
    font-size: 0.85rem;
    max-width: 600px;
    margin: 0 auto 8px;
}

.footer-copy {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* ===== Print Styles ===== */
@media print {
    .navbar, .hero, .features, .how-it-works, .assessment, .footer, .result-actions {
        display: none !important;
    }
    .result-section {
        display: block !important;
        padding: 0;
    }
    .result-wrapper {
        box-shadow: none;
        border: 1px solid #ddd;
    }
    body {
        background: white;
        color: #1a1a1a;
    }
    .result-wrapper {
        background: white;
    }
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-links a:not(.nav-cta) {
        display: none;
    }

    .hero {
        padding: 130px 0 60px;
        min-height: auto;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-stats {
        gap: 20px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

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

    .steps-container {
        flex-direction: column;
    }

    .step-arrow {
        transform: rotate(90deg);
    }

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

    .contact-cta-card {
        flex-direction: column;
        padding: 36px 24px;
        gap: 28px;
        text-align: center;
    }

    .contact-cta-left h2 {
        font-size: 1.4rem;
    }

    .contact-cta-right {
        min-width: auto;
        width: 100%;
    }

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

    .cta-btn {
        width: 100%;
        justify-content: center;
    }

    .cta-inner {
        padding: 28px 20px;
    }

    .form-wrapper {
        padding: 28px 20px;
    }

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

    .age-comparison {
        flex-direction: column;
        gap: 16px;
    }

    .age-card {
        padding: 24px 40px;
    }

    .age-vs {
        transform: rotate(90deg);
    }

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

    .result-wrapper {
        padding: 28px 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero h1 {
        font-size: 1.7rem;
    }

    .hero-badge {
        font-size: 0.8rem;
        padding: 6px 14px;
    }

    .btn-lg {
        padding: 14px 24px;
        font-size: 1rem;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

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

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .section-header h2 {
        font-size: 1.4rem;
    }

    .feature-card {
        padding: 24px 20px;
    }

    .step-card {
        padding: 28px 20px;
    }

    .contact-cta-card {
        padding: 28px 16px;
    }

    .contact-cta-left h2 {
        font-size: 1.2rem;
    }

    .contact-btn {
        padding: 14px 18px;
        font-size: 0.95rem;
    }

    .bp-inputs {
        flex-direction: column;
        gap: 8px;
    }

    .bp-separator {
        display: none;
    }

    .age-value {
        font-size: 2.8rem;
    }

    .cta-inner h3 {
        font-size: 1.2rem;
    }

    .result-header h2 {
        font-size: 1.4rem;
    }
}

/* iPhone SE / very small screens */
@media (max-width: 375px) {
    .container {
        padding: 0 12px;
    }

    .hero {
        padding: 110px 0 40px;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .navbar {
        padding: 12px 0;
    }

    .logo {
        font-size: 1.2rem;
    }

    .nav-cta {
        padding: 6px 14px;
        font-size: 0.85rem !important;
    }

    .section-header h2 {
        font-size: 1.25rem;
    }

    .section-header p {
        font-size: 0.9rem;
    }

    .form-wrapper {
        padding: 20px 14px;
    }

    .form-group input,
    .form-group select {
        padding: 12px 14px;
        font-size: 0.9rem;
    }

    .btn-submit {
        padding: 14px;
        font-size: 1rem;
    }

    .contact-btn {
        padding: 12px 14px;
        font-size: 0.9rem;
    }

    .cta-btn {
        padding: 12px 16px;
        min-width: auto;
    }

    .age-card {
        padding: 20px 30px;
    }

    .age-value {
        font-size: 2.4rem;
    }

    .metric-card {
        padding: 16px;
    }

    .advice-item {
        padding: 14px 16px;
    }
}