/* ========================================
   AI 产品大师 - 主样式文件
   ======================================== */

/* CSS Variables */
:root {
    --primary-color: #0f766e;
    --primary-dark: #115e59;
    --secondary-color: #14b8a6;
    --accent-color: #ea580c;
    --success-color: #10b981;
    --bg-dark: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.82);
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --gradient-1: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
    --gradient-2: linear-gradient(135deg, #ccfbf1 0%, #99f6e4 100%);
    --gradient-3: linear-gradient(135deg, #fed7aa 0%, #fef3c7 100%);
    --glass-bg: rgba(255, 255, 255, 0.72);
    --glass-border: rgba(15, 118, 110, 0.18);
    --glass-shine: rgba(15, 118, 110, 0.28);
    --shadow-sm: 0 8px 22px rgba(15, 118, 110, 0.1);
    --shadow-md: 0 14px 30px rgba(15, 118, 110, 0.14);
    --shadow-lg: 0 18px 44px rgba(15, 118, 110, 0.18);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --hero-text: #1f2937;
    --hero-subtext: #4b5563;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

/* Cursor Tutorial Style Background */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(145deg, #f0fdfa 0%, #fff7ed 50%, #f8fafc 100%),
        linear-gradient(rgba(20, 184, 166, 0.08) 1px, transparent 1px),
        linear-gradient(90deg, rgba(20, 184, 166, 0.08) 1px, transparent 1px);
    background-size: 100% 100%, 36px 36px, 36px 36px;
    z-index: -2;
}

/* Noise Texture Overlay */
body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    opacity: 0.015;
    pointer-events: none;
    z-index: -1;
}

/* Background Animation - Enhanced Glowing Orbs */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.bg-animation::before {
    content: '';
    position: absolute;
    width: 1800px;
    height: 1800px;
    top: -600px;
    left: -400px;
    background: radial-gradient(circle at center, rgba(20, 184, 166, 0.25) 0%, rgba(15, 118, 110, 0.1) 40%, transparent 70%);
    filter: blur(80px);
    animation: rotate 60s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Floating Glowing Orbs */
.bg-orb {
    position: fixed;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.6;
    animation: float 25s ease-in-out infinite;
    pointer-events: none;
    will-change: transform;
    transform: translateZ(0);
}

.bg-orb-1 {
    background: radial-gradient(circle, rgba(20, 184, 166, 0.32) 0%, rgba(15, 118, 110, 0.16) 40%, transparent 70%);
    top: 5%;
    right: -150px;
    box-shadow: 0 0 200px rgba(20, 184, 166, 0.2);
}

.bg-orb-2 {
    background: radial-gradient(circle, rgba(251, 146, 60, 0.26) 0%, rgba(234, 88, 12, 0.12) 40%, transparent 70%);
    bottom: 5%;
    left: -150px;
    animation-delay: -12s;
    box-shadow: 0 0 200px rgba(234, 88, 12, 0.16);
}

/* Additional orbs for more depth */
.bg-orb-3 {
    position: fixed;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(20, 184, 166, 0.22) 0%, rgba(251, 146, 60, 0.08) 50%, transparent 70%);
    filter: blur(80px);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    opacity: 0.4;
    animation: float 30s ease-in-out infinite;
    animation-delay: -5s;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1) translateZ(0); }
    25% { transform: translate(40px, -40px) scale(1.1) translateZ(0); }
    50% { transform: translate(-30px, 30px) scale(0.9) translateZ(0); }
    75% { transform: translate(20px, 40px) scale(1.05) translateZ(0); }
}

/* ========================================
   Navigation - Glassmorphism
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    padding: 1rem 5%;
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.84);
    box-shadow: 0 8px 32px rgba(15, 118, 110, 0.12);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

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

.nav-links a:hover::after {
    width: 100%;
}

/* Submenu Styles */
.nav-links .has-submenu {
    position: relative;
}

.nav-links .has-submenu > a::after {
    display: none;
}

.nav-links .submenu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 160px;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(15, 118, 110, 0.16);
    list-style: none;
    z-index: 1001;
}

.nav-links .has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-links .submenu li {
    padding: 0;
}

.nav-links .submenu a {
    display: block;
    padding: 0.75rem 1.25rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.nav-links .submenu a:hover {
    background: rgba(15, 118, 110, 0.1);
    color: var(--primary-color);
}

.nav-links .submenu a::after {
    display: none;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    width: 36px;
    height: 36px;
    justify-content: center;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: transform 0.3s, opacity 0.3s;
    border-radius: 2px;
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn[aria-expanded="true"] span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* QQ Contact Link */
.qq-contact {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--glass-bg);
    border-radius: 12px;
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
}

.qq-contact:hover {
    background: rgba(15, 118, 110, 0.1);
    color: var(--primary-color);
    border-color: rgba(15, 118, 110, 0.3);
    box-shadow: 0 0 20px rgba(15, 118, 110, 0.15);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding: 160px 5% 80px;
    position: relative;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.6rem;
    background: linear-gradient(135deg, rgba(15, 118, 110, 0.86), rgba(20, 184, 166, 0.82));
    border: 1px solid var(--glass-border);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(16px);
    color: #ffffff;
    box-shadow: 0 8px 24px rgba(15, 118, 110, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.12);
    animation: fadeInUp 0.6s ease-out;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #1f2937 0%, #0f766e 52%, #14b8a6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 28px rgba(20, 184, 166, 0.16);
    animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-subtitle {
    color: var(--hero-subtext);
    font-size: 1.1rem;
    line-height: 1.7;
    margin: 0 auto 2.5rem;
    max-width: 720px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.hero-feature-item {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.4rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 14px;
    color: var(--text-secondary);
    backdrop-filter: blur(12px);
    font-weight: 600;
}

.feature-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, #0f766e, #14b8a6);
    box-shadow: 0 0 10px rgba(20, 184, 166, 0.38);
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.cta-button.large {
    padding: 1.3rem 2.4rem;
    font-size: 1.05rem;
}

.cta-button.glass {
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    box-shadow: 0 10px 22px rgba(15, 118, 110, 0.12);
}

.cta-button.glass:hover {
    background: rgba(255, 255, 255, 0.86);
    box-shadow: 0 14px 32px rgba(15, 118, 110, 0.16);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Trust Section
   ======================================== */
.trust-section {
    padding: 40px 5% 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.trust-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.trust-title {
    font-size: 2.2rem;
    margin-bottom: 0.8rem;
}

.trust-subtitle {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.trust-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.6rem;
}

.trust-card {
    background: var(--glass-bg);
    border-radius: 18px;
    padding: 1.8rem;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.trust-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.trust-icon {
    font-size: 1.6rem;
    margin-bottom: 0.8rem;
}

.trust-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.6rem;
}

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

/* ========================================
   Degrade Section
   ======================================== */
.degrade-section {
    padding: 16px 5% 10px;
    max-width: 1200px;
    margin: 0 auto;
}

.degrade-card {
    background: linear-gradient(135deg, rgba(251, 146, 60, 0.12), rgba(20, 184, 166, 0.1));
    border-radius: 18px;
    padding: 1.8rem;
    border: 1px solid rgba(234, 88, 12, 0.26);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-sm);
}

.degrade-card h2 {
    font-size: 1.2rem;
    margin-bottom: 0.7rem;
}

.degrade-card p {
    color: var(--text-secondary);
    font-size: 0.98rem;
    line-height: 1.8;
}

/* ========================================
   Products Section
   ======================================== */
.products-section {
    padding: 60px 5%;
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2.5rem;
}

/* Product Card - Enhanced Glassmorphism */
.product-card {
    background: var(--glass-bg);
    border-radius: 24px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    will-change: transform;
}

/* Glass shine effect */
.product-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.05),
        transparent
    );
    transition: left 0.5s;
}

.product-card:hover::after {
    left: 100%;
}

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

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 42px rgba(15, 118, 110, 0.18), 0 0 24px var(--card-glow, rgba(20, 184, 166, 0.18));
    border-color: var(--glass-shine);
}

/* Product Icon */
.product-icon {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    background: var(--icon-bg, rgba(99, 102, 241, 0.2));
    overflow: hidden;
}

.product-icon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Card Variants */
.product-card:nth-child(1) {
    --card-gradient: var(--gradient-1);
    --icon-bg: rgba(15, 118, 110, 0.14);
    --card-glow: rgba(20, 184, 166, 0.18);
}

.product-card:nth-child(2) {
    --card-gradient: linear-gradient(135deg, #ea580c 0%, #f97316 100%);
    --icon-bg: rgba(234, 88, 12, 0.14);
    --card-glow: rgba(234, 88, 12, 0.16);
}

/* Card Content */
.product-card h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.product-card .badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(15, 118, 110, 0.12);
    color: var(--success-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.product-card .description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.05rem;
}

/* Price Section - Glassmorphism */
.price-section {
    background: var(--glass-bg);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px) saturate(150%);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.price-main {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #1f2937 0%, #0f766e 55%, #ea580c 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 0 14px rgba(15, 118, 110, 0.15));
}

.price-unit {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.price-breakdown {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.price-breakdown p {
    margin-bottom: 0.25rem;
}

.price-breakdown strong {
    color: var(--text-primary);
}

/* Features List */
.features-list {
    list-style: none;
    margin-bottom: 2rem;
}

.features-list li {
    padding: 0.8rem 0;
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(15, 118, 110, 0.14);
}

.features-list li:last-child {
    border-bottom: none;
}

.features-list li::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--success-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.features-list li strong {
    color: var(--text-primary);
}

/* Buttons - Glassmorphism */
.cta-button {
    width: 100%;
    padding: 1.2rem 2rem;
    border: none;
    border-radius: 14px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255, 255, 255, 0.1) 50%,
        transparent 70%
    );
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.cta-button:hover::before {
    transform: translateX(100%);
}

.cta-button.primary {
    background: linear-gradient(135deg, rgba(15, 118, 110, 0.9), rgba(20, 184, 166, 0.86));
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 24px rgba(15, 118, 110, 0.26), inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.cta-button.secondary {
    background: linear-gradient(135deg, rgba(234, 88, 12, 0.9), rgba(249, 115, 22, 0.84));
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 24px rgba(234, 88, 12, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 34px rgba(15, 118, 110, 0.22), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.cta-button.outline {
    background: rgba(255, 255, 255, 0.66);
    border: 2px solid;
    margin-top: 1rem;
    backdrop-filter: blur(12px);
}

.cta-button.outline-primary {
    border-color: rgba(15, 118, 110, 0.48);
    color: var(--primary-color);
    box-shadow: inset 0 0 20px rgba(15, 118, 110, 0.1);
}

.cta-button.outline-primary:hover {
    box-shadow: 0 0 30px rgba(15, 118, 110, 0.22);
}

.cta-button.outline-accent {
    border-color: rgba(234, 88, 12, 0.45);
    color: var(--accent-color);
    box-shadow: inset 0 0 20px rgba(234, 88, 12, 0.09);
}

.cta-button.outline:hover {
    background: rgba(255, 255, 255, 0.84);
    box-shadow: 0 0 26px rgba(15, 118, 110, 0.16);
}

/* ========================================
   Footer - Glassmorphism
   ======================================== */
footer {
    padding: 3rem 5%;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    color: var(--text-secondary);
    margin-top: 4rem;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(20px) saturate(150%);
}

footer p {
    font-size: 0.95rem;
}

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

footer a:hover {
    text-decoration: underline;
    text-shadow: 0 0 16px rgba(15, 118, 110, 0.22);
}

.footer-links {
    margin-top: 0.5rem;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem 5%;
    }

    .logo {
        font-size: 1.2rem;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(30px) saturate(180%);
        -webkit-backdrop-filter: blur(30px) saturate(180%);
        padding: 1rem 5%;
        border-top: 1px solid var(--glass-border);
        box-shadow: 0 10px 30px rgba(15, 118, 110, 0.14);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links li {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--glass-border);
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .qq-contact {
        display: none;
    }

    .hero {
        padding: 120px 5% 40px;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .section-title h2 {
        font-size: 2rem;
    }

    .product-card {
        padding: 2rem;
    }

    .products-grid {
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 5% 30px;
    }

    .hero h2 {
        font-size: 1.3rem;
    }

    .product-card h3 {
        font-size: 1.4rem;
    }

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

    .product-card {
        padding: 1.5rem;
    }
}

/* ========================================
   Utility Classes
   ======================================== */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}