/* =========================================
   Premium Single Product Store - Dark Theme
   Gold & Dark Navy Color Scheme
   ========================================= */

/* CSS Змінні */
:root {
    --primary: #d4a843;
    --primary-light: #e8c547;
    --primary-dark: #b8912e;
    --secondary: #1a1a2e;
    --secondary-light: #252545;
    --bg-dark: #0d0d1a;
    --bg-card: #141428;
    --bg-card-hover: #1c1c3a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0c8;
    --text-muted: #6b6b8d;
    --border-color: rgba(212, 168, 67, 0.15);
    --border-hover: rgba(212, 168, 67, 0.35);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(212, 168, 67, 0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --transition: all 0.3s ease;
    --font-main: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover { color: var(--primary-light); }

img { max-width: 100%; height: auto; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =========================================
   Навігація
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 26, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(13, 13, 26, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 22px;
    font-weight: 700;
    color: var(--primary) !important;
}

.nav-logo img { height: 36px; }
.logo-icon { font-size: 28px; }

.nav-links {
    display: flex;
    gap: 8px;
}

.nav-link {
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: rgba(212, 168, 67, 0.08);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* =========================================
   Кнопки
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-main);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--bg-dark);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--bg-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.btn-outline:hover {
    background: var(--primary);
    color: var(--bg-dark);
    transform: translateY(-2px);
}

.btn-sm { padding: 8px 18px; font-size: 13px; }
.btn-lg { padding: 16px 36px; font-size: 17px; }
.btn-block { width: 100%; }

/* =========================================
   Hero секція
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 70px;
    overflow: hidden;
}

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

.hero-particles .particle {
    position: absolute;
    border-radius: 50%;
    background: var(--primary);
    opacity: 0.15;
    animation: float-particle linear infinite;
}

@keyframes float-particle {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    10% { opacity: 0.15; }
    90% { opacity: 0.15; }
    100% { transform: translateY(-10vh) scale(1); opacity: 0; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: 6px 20px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 700;
    color: var(--bg-dark);
    margin-bottom: 20px;
    animation: pulse-badge 2s infinite;
}

@keyframes pulse-badge {
    0%, 100% { box-shadow: 0 0 0 0 rgba(212, 168, 67, 0.4); }
    50% { box-shadow: 0 0 0 10px rgba(212, 168, 67, 0); }
}

.hero-title {
    font-size: clamp(36px, 5vw, 60px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff 30%, var(--primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 30px;
    max-width: 500px;
}

.hero-price {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 30px;
}

.price-old {
    font-size: 22px;
    color: var(--text-muted);
    text-decoration: line-through;
}

.price-current {
    font-size: 38px;
    font-weight: 800;
    color: var(--primary);
}

.price-discount {
    background: #ef4444;
    color: #fff;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 700;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.hero-stock {
    color: var(--text-muted);
    font-size: 14px;
}

.hero-stock strong { color: #10b981; }

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-img {
    max-width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

.hero-placeholder {
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 168, 67, 0.1), transparent);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.placeholder-icon {
    font-size: 120px;
    animation: float 4s ease-in-out infinite;
}

.placeholder-glow {
    position: absolute;
    inset: -20px;
    border-radius: 50%;
    border: 2px solid rgba(212, 168, 67, 0.2);
    animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

@keyframes glow-pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.1); opacity: 0.6; }
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-down {
    display: flex;
    justify-content: center;
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary);
    border-radius: 25px;
}

.scroll-down span {
    width: 4px;
    height: 10px;
    background: var(--primary);
    border-radius: 2px;
    margin-top: 10px;
    animation: scroll-anim 2s infinite;
}

@keyframes scroll-anim {
    0% { opacity: 1; transform: translateY(0); }
    100% { opacity: 0; transform: translateY(15px); }
}

/* =========================================
   Банер
   ========================================= */
.promo-banner {
    padding: 24px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.promo-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.promo-text h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}

.promo-text p { color: var(--text-secondary); font-size: 14px; }

/* =========================================
   Секції
   ========================================= */
section { padding: 80px 0; }

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-label {
    display: inline-block;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 10px;
}

.section-title {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    margin-bottom: 15px;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 17px;
    max-width: 600px;
    margin: 0 auto;
}

/* =========================================
   Секція продукту
   ========================================= */
.product-section {
    background: var(--bg-dark);
}

.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.product-gallery { position: sticky; top: 90px; }

.gallery-main {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.gallery-main img {
    width: 100%;
    height: 400px;
    object-fit: contain;
    padding: 20px;
}

.gallery-placeholder {
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 100px;
}

.gallery-thumbs {
    display: flex;
    gap: 10px;
}

.thumb {
    width: 70px;
    height: 70px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

.thumb:hover, .thumb.active { border-color: var(--primary); }
.thumb img { width: 100%; height: 100%; object-fit: cover; }

.product-info {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 35px;
    border: 1px solid var(--border-color);
}

.product-badge {
    display: inline-block;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    color: var(--bg-dark);
    margin-bottom: 16px;
}

.product-title {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
}

.product-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 20px;
}

.product-price-block {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
}

.product-desc {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.product-meta {
    padding: 10px 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 14px;
}

.product-meta span { color: var(--text-muted); }
.product-meta strong { color: var(--text-primary); }

.product-stock { margin: 20px 0; }

.stock-available {
    color: #10b981;
    font-weight: 600;
}

.stock-unavailable {
    color: #ef4444;
    font-weight: 600;
}

.product-full-desc,
.product-instructions {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 35px;
    border: 1px solid var(--border-color);
    margin-top: 40px;
}

.product-full-desc h3,
.product-instructions h3 {
    font-size: 22px;
    margin-bottom: 20px;
    color: var(--primary);
}

.desc-content,
.instructions-content {
    color: var(--text-secondary);
    line-height: 1.8;
}

.desc-content p,
.instructions-content p { margin-bottom: 12px; }

.desc-content h3,
.instructions-content h3 {
    color: var(--text-primary);
    font-size: 18px;
    margin-top: 20px;
    margin-bottom: 10px;
}

.desc-content ol,
.instructions-content ol,
.desc-content ul,
.instructions-content ul {
    padding-left: 20px;
    margin-bottom: 12px;
}

.desc-content li,
.instructions-content li {
    margin-bottom: 8px;
}

/* =========================================
   Характеристики
   ========================================= */
.features-section {
    background: var(--secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 30px;
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* =========================================
   Переваги
   ========================================= */
.benefits-section {
    background: var(--bg-dark);
}

.benefits-list {
    max-width: 800px;
    margin: 0 auto;
}

.benefit-item {
    display: flex;
    gap: 24px;
    padding: 28px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    margin-bottom: 16px;
    transition: var(--transition);
}

.benefit-item:hover {
    border-color: var(--border-hover);
    transform: translateX(10px);
}

.benefit-number {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.4;
    min-width: 50px;
}

.benefit-content h3 {
    font-size: 18px;
    margin-bottom: 8px;
}

.benefit-content p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

/* =========================================
   Форма замовлення
   ========================================= */
.order-section {
    background: var(--secondary);
}

.order-form-wrapper {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 40px;
    align-items: start;
}

.order-product-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
    text-align: center;
    position: sticky;
    top: 90px;
}

.order-product-img {
    margin-bottom: 16px;
}

.order-product-img img {
    width: 100%;
    height: 200px;
    object-fit: contain;
    border-radius: var(--radius);
}

.order-placeholder {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
}

.order-product-card h3 {
    font-size: 16px;
    margin-bottom: 8px;
}

.order-price {
    font-size: 24px;
    font-weight: 800;
    color: var(--primary);
}

.order-old-price {
    font-size: 16px;
    color: var(--text-muted);
    text-decoration: line-through;
    margin-top: 4px;
}

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

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

.form-group.full-width { grid-column: 1 / -1; }

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.required { color: #ef4444; }

.form-group input,
.form-group textarea,
.form-group select {
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-main);
    font-size: 15px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(212, 168, 67, 0.1);
}

.form-group textarea { resize: vertical; }

.quantity-input {
    display: flex;
    align-items: center;
    gap: 0;
}

.qty-btn {
    width: 44px;
    height: 44px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.qty-btn:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.qty-btn:last-child { border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.qty-btn:hover { background: var(--primary); color: var(--bg-dark); }

.quantity-input input {
    width: 60px;
    text-align: center;
    border-radius: 0;
    border-left: none;
    border-right: none;
}

/* =========================================
   Контакти
   ========================================= */
.contacts-section {
    background: var(--bg-dark);
}

.contacts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    align-items: center;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--border-hover);
    transform: translateX(5px);
}

.contact-icon { font-size: 28px; }

.contact-card h4 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.contact-card a,
.contact-card p {
    color: var(--text-primary);
    font-size: 15px;
}

.contact-form {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 30px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* =========================================
   Підвал
   ========================================= */
.footer {
    background: var(--secondary);
    padding: 50px 0 20px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
}

.footer-logo img { height: 30px; }

.footer-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.7;
}

.footer-col h4 {
    color: var(--primary);
    font-size: 16px;
    margin-bottom: 16px;
}

.footer-col a,
.footer-col .footer-hours {
    display: block;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
    transition: var(--transition);
}

.footer-col a:hover { color: var(--primary); transform: translateX(3px); }

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 13px;
}

/* =========================================
   Алерти
   ========================================= */
.alert {
    display: flex;
    gap: 16px;
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 24px;
    align-items: flex-start;
}

.alert-success {
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.alert-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.alert-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.alert-success .alert-icon { background: #10b981; color: #fff; }
.alert-error .alert-icon { background: #ef4444; color: #fff; }

.alert-content h3 {
    font-size: 16px;
    margin-bottom: 4px;
}

.alert-success .alert-content h3 { color: #10b981; }
.alert-error .alert-content h3 { color: #ef4444; }

.alert-content p {
    color: var(--text-secondary);
    font-size: 14px;
}

/* =========================================
   Модальне вікно
   ========================================= */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active { display: flex; }

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    border: 1px solid var(--border-color);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
}

.modal-close:hover { color: var(--primary); }

.modal-body { padding: 30px; }

/* =========================================
   Toast повідомлення
   ========================================= */
.toast-container {
    position: fixed;
    top: 85px;
    right: 20px;
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 14px 20px;
    color: var(--text-primary);
    font-size: 14px;
    box-shadow: var(--shadow-lg);
    animation: slide-in 0.3s ease, fade-out 0.3s ease 2.7s forwards;
    min-width: 250px;
}

.toast-success { border-left: 4px solid #10b981; }
.toast-error { border-left: 4px solid #ef4444; }

@keyframes slide-in {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes fade-out {
    to { opacity: 0; transform: translateX(50px); }
}

/* =========================================
   Анімація появи
   ========================================= */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* =========================================
   Адаптивність
   ========================================= */
@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .hero-subtitle { margin: 0 auto 30px; }
    .hero-actions { justify-content: center; }
    .hero-price { justify-content: center; }
    .hero-stock { text-align: center; }
    .hero-image { order: -1; }
    .hero-placeholder { width: 280px; height: 280px; }
    .placeholder-icon { font-size: 80px; }
    
    .product-detail { grid-template-columns: 1fr; }
    .product-gallery { position: static; }
    
    .order-form-wrapper { grid-template-columns: 1fr; }
    .order-product-card { position: static; }
    
    .contacts-grid { grid-template-columns: 1fr; }
    
    .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(13, 13, 26, 0.98);
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--border-color);
    }
    .nav-links.active { display: flex; }
    .nav-toggle { display: flex; }
    
    .hero-title { font-size: 32px; }
    .hero-subtitle { font-size: 16px; }
    .price-current { font-size: 28px; }
    
    .order-form { grid-template-columns: 1fr; }
    
    .promo-content { flex-direction: column; text-align: center; }
    
    .footer-grid { grid-template-columns: 1fr; }
    
    section { padding: 60px 0; }
}

@media (max-width: 480px) {
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; }
    .hero-placeholder { width: 200px; height: 200px; }
    .placeholder-icon { font-size: 60px; }
    .features-grid { grid-template-columns: 1fr; }
    .benefit-item { flex-direction: column; gap: 12px; }
}