/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-blue: #00A0E9;
    --primary-green: #8BC34A;
    --primary-orange: #FF9800;
    --primary-purple: #9C27B0;
    --text-dark: #333333;
    --text-gray: #666666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0,0,0,0.1);
    --radius-lg: 24px;
    --radius-md: 16px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

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

.section-padding {
    padding: 100px 0;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0,0,0,0.05);
    padding: 15px 0;
    transition: 0.3s;
}

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

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 24px;
    font-weight: 800;
    background: linear-gradient(45deg, var(--primary-blue), var(--primary-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    font-weight: 500;
    color: var(--text-dark);
    font-size: 16px;
    position: relative;
}

.nav-links a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: 0.3s;
}

.nav-links a:not(.btn-nav):hover::after {
    width: 100%;
}

.btn-nav {
    padding: 8px 24px;
    background: var(--primary-blue);
    color: white !important;
    border-radius: 20px;
    box-shadow: 0 4px 10px rgba(0, 160, 233, 0.3);
}

.btn-nav:hover {
    background: #008ccb;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0, 160, 233, 0.4);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: 0.3s;
}

.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }


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

.hero-bg-anim {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.4;
    animation: float 10s infinite ease-in-out;
}

.blob-1 { width: 400px; height: 400px; background: var(--primary-blue); top: -10%; right: -10%; }
.blob-2 { width: 300px; height: 300px; background: var(--primary-green); bottom: 10%; left: -5%; animation-delay: 2s; }
.blob-3 { width: 200px; height: 200px; background: var(--primary-orange); top: 40%; right: 20%; animation-delay: 4s; }

.hero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 50px;
    width: 100%;
}

.hero-text {
    flex: 1;
    z-index: 2;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 160, 233, 0.1);
    color: var(--primary-blue);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
    border: 1px solid rgba(0, 160, 233, 0.2);
}

.hero-text h1 {
    font-size: 64px;
    margin-bottom: 24px;
    line-height: 1.1;
    font-weight: 800;
}

.highlight-text {
    background: linear-gradient(120deg, var(--primary-blue) 0%, var(--primary-green) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 40px;
    font-weight: 400;
}

.cta-group {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.btn-primary, .btn-secondary {
    padding: 14px 32px;
    font-size: 18px;
    font-weight: bold;
    border-radius: 30px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    color: white;
    box-shadow: 0 10px 25px rgba(0, 160, 233, 0.3);
}

.btn-secondary {
    background: white;
    color: var(--text-dark);
    border: 1px solid #eee;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(0, 160, 233, 0.4);
}

.btn-primary:hover .arrow {
    transform: translateX(5px);
}

.btn-secondary:hover {
    background: #f8f9fa;
    transform: translateY(-3px);
}

.arrow, .play-icon { transition: 0.3s; }

.stats-row {
    display: flex;
    gap: 60px;
    border-top: 1px solid rgba(0,0,0,0.05);
    padding-top: 30px;
}

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

.stat-num {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-dark);
}

.stat-label {
    font-size: 14px;
    color: var(--text-gray);
}

/* Hero Visual - Phone Mockup */
.hero-visual {
    flex: 1;
    position: relative;
    height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: #fff;
    border-radius: 40px;
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
    border: 8px solid #333;
    position: relative;
    z-index: 10;
    overflow: hidden;
}

.screen-content {
    padding: 20px;
    height: 100%;
    background: #f5f5f5;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.app-header {
    height: 40px;
    display: flex;
    align-items: center;
}

.app-search {
    width: 100%;
    height: 36px;
    background: white;
    border-radius: 18px;
    padding: 0 15px;
    display: flex;
    align-items: center;
    font-size: 12px;
    color: #999;
}

.app-card {
    background: white;
    border-radius: 12px;
    padding: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.app-img {
    height: 80px;
    background: #e0e0e0;
    border-radius: 8px;
    margin-bottom: 10px;
}

.app-text-line {
    height: 10px;
    background: #eee;
    border-radius: 5px;
    margin-bottom: 6px;
    width: 80%;
}

.app-text-line.short { width: 50%; }

.fab-btn {
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: var(--primary-green);
    border-radius: 50%;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: 0 5px 15px rgba(139, 195, 74, 0.4);
}

.deco-circle {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(0,0,0,0.05);
    z-index: 0;
}

.deco-1 { width: 500px; height: 500px; }

.floating-tag {
    position: absolute;
    background: white;
    padding: 12px 24px;
    border-radius: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    font-weight: bold;
    font-size: 14px;
    animation: float 5s infinite ease-in-out;
    white-space: nowrap;
    z-index: 11;
}

.tag-1 { top: 20%; left: 0; animation-delay: 0s; color: var(--primary-blue); border-left: 4px solid var(--primary-blue); }
.tag-2 { top: 50%; right: -20px; animation-delay: 1.5s; color: var(--primary-orange); border-left: 4px solid var(--primary-orange); }
.tag-3 { bottom: 20%; left: 20px; animation-delay: 3s; color: var(--primary-green); border-left: 4px solid var(--primary-green); }


/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 60px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    margin-bottom: 16px;
    position: relative;
    display: inline-block;
}

.section-subtitle {
    color: var(--text-gray);
    font-size: 18px;
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    background: white;
    padding: 40px 30px;
    border-radius: var(--radius-lg);
    text-align: center;
    transition: 0.4s;
    border: 1px solid #f0f0f0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    border-color: transparent;
}

.icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 20px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    transition: 0.4s;
}

.feature-card:hover .icon-wrapper {
    transform: rotate(10deg) scale(1.1);
}

.icon-wrapper.blue { background: rgba(0, 160, 233, 0.1); color: var(--primary-blue); }
.icon-wrapper.green { background: rgba(139, 195, 74, 0.1); color: var(--primary-green); }
.icon-wrapper.orange { background: rgba(255, 152, 0, 0.1); color: var(--primary-orange); }
.icon-wrapper.purple { background: rgba(156, 39, 176, 0.1); color: var(--primary-purple); }

.feature-card h3 { margin-bottom: 12px; font-size: 20px; }
.feature-card p { color: var(--text-gray); font-size: 14px; line-height: 1.6; }


/* Food Exploration Section */
.food {
    background-color: #fff;
    overflow: hidden;
}

.food-wrapper {
    display: flex;
    align-items: center;
    gap: 80px;
    padding: 20px 0;
}

.food-content {
    flex: 1;
}

.food-badge {
    display: inline-block;
    padding: 6px 12px;
    background: #fff3e0;
    color: #ff9800;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.highlight-text-orange {
    background: linear-gradient(120deg, #ff9800 0%, #ff5722 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.food-desc {
    font-size: 16px;
    color: var(--text-gray);
    margin-bottom: 30px;
    line-height: 1.8;
}

.food-features {
    margin-bottom: 40px;
}

.food-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
}

.check-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: #e8f5e9;
    color: #4caf50;
    border-radius: 50%;
    font-size: 14px;
    font-weight: bold;
    flex-shrink: 0;
}

.btn-text {
    font-weight: bold;
    color: #ff5722;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
}

.btn-text:hover .arrow {
    transform: translateX(5px);
}

/* Food Visuals - Collage */
.food-visual {
    flex: 1.2;
    position: relative;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.food-grid-collage {
    position: relative;
    width: 100%;
    height: 100%;
}

.food-bg-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, #fff3e0 0%, transparent 70%);
    z-index: 0;
}

.food-card {
    position: absolute;
    background: white;
    border-radius: 20px;
    padding: 15px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 15px;
    width: 280px;
    transition: 0.3s;
    z-index: 2;
    border: 1px solid rgba(0,0,0,0.02);
}

.food-card:hover {
    transform: scale(1.05) translateY(-5px);
    box-shadow: 0 20px 45px rgba(0,0,0,0.15);
    z-index: 10;
}

.food-img-box {
    width: 70px;
    height: 70px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.food-info h4 {
    font-size: 16px;
    margin-bottom: 4px;
}

.food-info .rating {
    font-size: 12px;
    margin-bottom: 4px;
    letter-spacing: -2px;
}

.food-info p {
    font-size: 12px;
    color: #999;
}

.food-tag {
    position: absolute;
    top: -10px;
    right: -10px;
    background: #ff5722;
    color: white;
    font-size: 10px;
    padding: 4px 10px;
    border-radius: 10px;
    font-weight: bold;
    box-shadow: 0 4px 10px rgba(255, 87, 34, 0.3);
}

.food-tag.hot { background: #f44336; }

/* Card Positioning */
.card-1 {
    top: 10%;
    right: 10%;
    transform: rotate(5deg);
}

.card-2 {
    top: 40%;
    left: 5%;
    transform: rotate(-3deg);
}

.card-3 {
    bottom: 10%;
    right: 15%;
    transform: rotate(2deg);
}

/* Animations */
.floating-slow { animation: float 6s infinite ease-in-out; }
.floating-medium { animation: float 5s infinite ease-in-out 1s; }
.floating-fast { animation: float 4s infinite ease-in-out 2s; }

/* Responsive Food */
@media (max-width: 960px) {
    .food-wrapper {
        flex-direction: column;
        text-align: center;
        gap: 50px;
    }

    .food-features li {
        justify-content: center;
        text-align: left;
    }

    .food-visual {
        width: 100%;
        height: 400px;
    }
    
    .food-card {
        width: 240px;
    }
    
    .card-1 { top: 0; right: 0; left: auto; }
    .card-2 { top: 35%; left: 0; }
    .card-3 { bottom: 0; right: 0; left: auto; }
}


/* Simulation Section & Enriched About */

/* Simulation Wrapper */
.simulation-wrapper {
    display: flex;
    align-items: center;
    gap: 60px;
    padding: 20px 0;
}

.sim-stage {
    flex: 1;
    display: flex;
    justify-content: center;
}

.sim-text {
    flex: 1;
}

.sim-text h3 {
    font-size: 36px;
    margin-bottom: 20px;
    line-height: 1.3;
}

.sim-desc {
    color: var(--text-gray);
    margin-bottom: 30px;
    font-size: 16px;
}

.sim-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sim-feature-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.sf-icon-box {
    width: 40px;
    height: 40px;
    background: rgba(0, 160, 233, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.sim-feature-item h4 {
    margin-bottom: 5px;
    font-size: 18px;
}

.sim-feature-item p {
    font-size: 14px;
    color: var(--text-gray);
}

/* Phone Frame & Simulation */
.phone-frame {
    width: 300px;
    height: 580px;
    background: #fff;
    border-radius: 40px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    border: 8px solid #333;
    overflow: hidden;
    position: relative;
    background: #f8f9fa;
}

.phone-screen {
    padding: 20px;
    height: 100%;
    position: relative;
}

/* Sim Step 1: Search */
.sim-search-box {
    background: white;
    border-radius: 20px;
    height: 44px;
    display: flex;
    align-items: center;
    padding: 0 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    margin-top: 40px;
    position: relative;
    z-index: 2;
}

.search-icon { margin-right: 10px; opacity: 0.5; }

.typing-container {
    overflow: hidden;
    white-space: nowrap;
    width: 0;
    animation: typing 2s steps(6, end) forwards;
    animation-delay: 0.5s;
    font-size: 14px;
    color: #333;
    border-right: 2px solid transparent;
}

@keyframes typing {
    from { width: 0; border-right-color: #333; }
    to { width: 90px; border-right-color: transparent; }
}

/* Sim Step 2: Loading */
.sim-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    opacity: 0;
    animation: showLoading 3s forwards;
    animation-delay: 2.5s;
    width: 100%;
}

.ai-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 160, 233, 0.2);
    border-top-color: var(--primary-blue);
    border-radius: 50%;
    margin: 0 auto 15px;
    animation: spin 1s linear infinite;
}

@keyframes spin { 100% { transform: rotate(360deg); } }

@keyframes showLoading {
    0% { opacity: 0; visibility: hidden; }
    10% { opacity: 1; visibility: visible; }
    90% { opacity: 1; visibility: visible; }
    100% { opacity: 0; visibility: hidden; }
}

/* Sim Step 3: Results */
.sim-results {
    position: absolute;
    top: 100px;
    left: 0;
    width: 100%;
    padding: 0 15px;
    opacity: 0;
    animation: slideUpFade 0.8s forwards;
    animation-delay: 5.5s;
}

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

.result-card {
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.card-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-size: 12px;
}

.card-tag {
    background: #e3f2fd;
    color: var(--primary-blue);
    padding: 2px 8px;
    border-radius: 4px;
}

.card-rating {
    color: var(--primary-orange);
    font-weight: bold;
}

.result-card h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

.timeline {
    position: relative;
    padding-left: 15px;
    border-left: 1px solid #eee;
    margin-bottom: 15px;
}

.timeline li {
    position: relative;
    margin-bottom: 15px;
    padding-left: 15px;
}

.timeline .dot {
    position: absolute;
    left: -20px;
    top: 5px;
    width: 9px;
    height: 9px;
    background: white;
    border: 2px solid var(--primary-blue);
    border-radius: 50%;
}

.timeline .time {
    display: block;
    font-size: 12px;
    color: var(--text-gray);
    margin-bottom: 2px;
}

.event-detail strong {
    display: block;
    font-size: 14px;
    color: var(--text-dark);
}

.event-detail small {
    font-size: 11px;
    color: #999;
}

.card-action {
    border-top: 1px solid #f0f0f0;
    padding-top: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--primary-blue);
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
}

.card-action:hover .action-arrow {
    transform: translateX(5px);
}

.action-arrow { transition: 0.3s; }

/* About Badges */
.about-badges {
    margin-top: 30px;
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.badge-item {
    background: rgba(0, 0, 0, 0.03);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-dark);
}

.intro-detail {
    margin-top: 20px;
    color: var(--text-gray);
    font-size: 15px;
}


/* Responsive Update for Simulation */
@media (max-width: 960px) {
    .simulation-wrapper {
        flex-direction: column-reverse;
        text-align: center;
        gap: 40px;
    }
    
    .sim-features {
        align-items: center;
        text-align: left;
    }
    
    .sim-feature-item {
        max-width: 400px;
    }
}

/* Download Section */
.download {
    background: linear-gradient(135deg, #2c3e50, #1a252f);
    color: white;
    overflow: hidden;
}

.download-box {
    position: relative;
    text-align: center;
    z-index: 1;
}

.circle-anim {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 50%;
    animation: ripple 3s infinite linear;
    z-index: -1;
}

.qr-wrapper {
    margin-top: 40px;
}

.qr-container {
    width: 200px;
    height: 200px;
    background: white;
    padding: 10px;
    margin: 0 auto 15px;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
}

.qr-placeholder {
    width: 100%;
    height: 100%;
    background: #eee;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
}

.qr-code-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.scan-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-green);
    box-shadow: 0 0 10px var(--primary-green);
    animation: scan 2s infinite linear;
}

/* Footer */
footer {
    background: #111;
    color: #999;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-logo h3 { color: white; font-size: 24px; margin-bottom: 10px; }
.footer-links h4, .footer-contact h4 { color: white; margin-bottom: 20px; }

.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a:hover { color: var(--primary-blue); }

.copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #222;
    font-size: 14px;
}


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

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

@keyframes ripple {
    0% { width: 0; height: 0; opacity: 1; border-width: 5px; }
    100% { width: 800px; height: 800px; opacity: 0; border-width: 0; }
}

@keyframes scan {
    0% { top: 0; }
    100% { top: 100%; }
}

/* Scroll Animation Classes */
.scroll-anim {
    opacity: 0;
    transform: translateY(40px);
    transition: 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.scroll-anim.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }


/* Responsive */
@media (max-width: 960px) {
    .hero h1 { font-size: 48px; }
    .hero-content { flex-direction: column; text-align: center; }
    .hero-text { margin-bottom: 60px; }
    .cta-group { justify-content: center; }
    .stats-row { justify-content: center; }
    
    .gallery-grid {
        grid-template-columns: 1fr;
        height: auto;
    }
    .item-large { grid-column: auto; grid-row: auto; height: 250px; }
    .gallery-item { height: 250px; }

    .about-wrapper { flex-direction: column-reverse; }
}

@media (max-width: 768px) {
    .navbar .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 30px;
        box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        text-align: center;
    }

    .navbar .nav-links.active { display: flex; animation: slideDown 0.3s forwards; }
    .hamburger { display: flex; }
    
    .hero { padding-top: 120px; }
    .hero h1 { font-size: 36px; }
    .hero-visual { height: 400px; width: 100%; }
    .phone-mockup { width: 220px; height: 440px; }
    .deco-circle { width: 300px; height: 300px; }
    
    .footer-content { flex-direction: column; }
}

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