/* ============================================
   TopClaw - OpenClaw 中文版官网
   CSS 样式表 - 本地化 SEO 优化 | 橙色主题
   ============================================ */

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

/* ===== Custom Properties ===== */
:root {
    --primary: #ff7a00;
    --primary-dark: #e66d00;
    --primary-light: #ff9933;
    --secondary: #1a1a2e;
    --accent: #16213e;
    --text: #e0e0e0;
    --text-light: #b0b0b0;
    --text-muted: #808090;
    --bg-dark: #0a0a0f;
    --bg-section: #0d0d14;
    --bg-card: #12121a;
    --bg-card-hover: #1a1a2e;
    --border: #2a2a3e;
    --border-light: #3a3a4e;
    --success: #4caf50;
    --warning: #ff9800;
    --gradient: linear-gradient(135deg, #ff7a00 0%, #ff9933 100%);
    --gradient-dark: linear-gradient(180deg, #0d0d14 0%, #0a0a0f 100%);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
    --shadow-primary: 0 4px 20px rgba(255, 122, 0, 0.25);
    --radius: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-main: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

/* ===== Base Styles ===== */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

/* ===== Utility Classes ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 800;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 3.5rem;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(10, 10, 15, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
    border-bottom-color: var(--border);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo img {
    width: 42px;
    height: 42px;
    border-radius: 10px;
}

.logo-text span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.nav-links a {
    padding: 8px 16px;
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-light);
    border-radius: 8px;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--primary);
    background: rgba(255, 122, 0, 0.1);
}

.btn-download {
    background: var(--gradient) !important;
    color: #fff !important;
    font-weight: 600 !important;
    padding: 10px 22px !important;
    border-radius: 50px !important;
    box-shadow: var(--shadow-primary);
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 122, 0, 0.4) !important;
    background: var(--gradient) !important;
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

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

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 122, 0, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 50%, rgba(255, 153, 51, 0.05) 0%, transparent 40%),
        radial-gradient(ellipse 50% 60% at 20% 80%, rgba(22, 33, 62, 0.3) 0%, transparent 50%);
    z-index: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    background: rgba(255, 122, 0, 0.15);
    border: 1px solid rgba(255, 122, 0, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary-light);
    margin-bottom: 1.5rem;
}

.hero-content h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-content h1 .highlight {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.15rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-desc strong {
    color: var(--primary-light);
}

/* Download Platforms */
.download-platforms {
    display: flex;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.platform-btn {
    flex: 1;
    min-width: 200px;
    max-width: 280px;
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--gradient);
    padding: 1rem 1.2rem;
    border-radius: var(--radius);
    border: none;
    transition: var(--transition);
}

.platform-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(255, 122, 0, 0.4);
}

.platform-btn.windows:hover {
    border-color: var(--primary);
    box-shadow: 0 6px 25px rgba(255, 122, 0, 0.4);
}

.platform-btn.mac:hover {
    border-color: var(--primary);
    box-shadow: 0 6px 25px rgba(255, 122, 0, 0.4);
}

.platform-btn svg {
    fill: #fff !important;
}

.platform-btn .platform-text strong {
    color: #fff;
}

.platform-btn .platform-text small {
    color: rgba(255, 255, 255, 0.85);
}

.platform-text {
    display: flex;
    flex-direction: column;
    line-height: 1.3;
}

.platform-text strong {
    color: var(--text);
    font-size: 1rem;
}

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

/* Hero Stats */
.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.stat-item {
    text-align: center;
    padding: 1.2rem 0.8rem;
    background: rgba(18, 18, 26, 0.6);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}

.stat-number {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.3rem;
}

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

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 420px;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image {
    width: 85%;
    height: 85%;
    object-fit: contain;
    position: relative;
    z-index: 1;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.hero-glow {
    position: absolute;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(255, 122, 0, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: glow 4s ease-in-out infinite;
}

@keyframes glow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* ===== Steps Section ===== */
.steps {
    background: var(--bg-section);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.step-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    text-align: center;
    position: relative;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.step-card.visible {
    opacity: 1;
    transform: translateY(0);
}

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

.step-number {
    width: 56px;
    height: 56px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0 auto 1.2rem;
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 122, 0, 0.3);
}

.step-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.step-card p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.step-arrow {
    position: absolute;
    top: 50%;
    right: -1.2rem;
    transform: translateY(-50%);
    font-size: 1.8rem;
    color: var(--primary);
    opacity: 0.5;
}

.step-card:last-child .step-arrow {
    display: none;
}

.steps-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* ===== Features Section ===== */
.features {
    background: var(--bg-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.feature-card.visible {
    opacity: 1;
    transform: translateY(0);
}

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

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

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

/* ===== Why Local Section ===== */
.why-local {
    background: var(--bg-section);
}

.why-local-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.why-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    gap: 1.2rem;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.why-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.why-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.why-icon {
    font-size: 2rem;
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 122, 0, 0.1);
    border-radius: 12px;
}

.why-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

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

.data-flow {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.data-box {
    text-align: center;
    padding: 1.5rem 2rem;
    background: rgba(255, 122, 0, 0.05);
    border-radius: var(--radius);
    border: 1px solid rgba(255, 122, 0, 0.15);
}

.data-box h4 {
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    font-weight: 700;
}

.data-box ul {
    list-style: none;
    color: var(--text-light);
}

.data-box li {
    padding: 0.4rem 0;
    font-size: 0.95rem;
}

.data-arrow {
    font-size: 2rem;
    color: var(--primary);
    font-weight: bold;
}

/* ===== Use Cases Section ===== */
.use-cases {
    background: var(--bg-dark);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.2rem;
}

.use-case-card {
    background: var(--bg-card);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    text-align: center;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.use-case-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.use-case-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.use-case-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.use-case-card h4 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.use-case-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.6;
}

/* ===== FAQ Section ===== */
.faq {
    background: var(--bg-section);
}

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

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
    opacity: 0;
    transform: translateY(20px);
}

.faq-item.visible {
    opacity: 1;
    transform: translateY(0);
}

.faq-item:hover {
    border-color: var(--border-light);
}

.faq-item.active {
    border-color: var(--primary);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 1.05rem;
    background: none;
    border: none;
    color: var(--text);
    text-align: left;
    font-family: inherit;
    transition: var(--transition);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary);
    transition: var(--transition);
    flex-shrink: 0;
    margin-left: 1rem;
}

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

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--text-light);
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 600px;
}

.faq-answer ol {
    padding-left: 1.5rem;
}

.faq-answer li {
    margin-bottom: 0.6rem;
    line-height: 1.7;
}

.faq-answer p {
    line-height: 1.7;
}

.faq-answer strong {
    color: var(--primary-light);
}

/* ===== CTA Section ===== */
.cta {
    background: var(--gradient);
    text-align: center;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.cta h2 {
    font-size: clamp(1.5rem, 4vw, 2.2rem);
    color: #fff;
    margin-bottom: 1rem;
    font-weight: 800;
}

.cta p {
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}

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

.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-cta.primary {
    background: #fff;
    color: var(--primary);
}

.btn-cta.primary:hover {
    background: var(--secondary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.btn-cta.primary:hover svg {
    fill: #fff !important;
}

.btn-cta.secondary {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-cta.secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: #fff;
    transform: translateY(-2px);
}

/* ===== Footer ===== */
.footer {
    background: var(--secondary);
    padding: 60px 0 20px;
    border-top: 1px solid var(--border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.footer-brand img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.footer-brand strong {
    font-size: 1.3rem;
    display: block;
    margin-bottom: 0.3rem;
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links-group h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text);
}

.footer-links-group ul {
    list-style: none;
}

.footer-links-group li {
    margin-bottom: 0.6rem;
}

.footer-links-group a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links-group a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* ===== Back to Top ===== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    background: var(--gradient);
    color: #fff;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    box-shadow: var(--shadow-primary);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(255, 122, 0, 0.4);
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2.5rem;
    }
    
    .hero-content {
        order: 2;
    }
    
    .hero-visual {
        order: 1;
    }
    
    .hero-image-wrapper {
        max-width: 350px;
    }
    
    .download-platforms {
        justify-content: center;
    }
    
    .hero-stats {
        max-width: 500px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Mobile */
@media (max-width: 768px) {
    .section {
        padding: 70px 0;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(10, 10, 15, 0.98);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 0.5rem;
        padding: 2rem;
        z-index: 999;
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-links a {
        font-size: 1.2rem;
        padding: 12px 24px;
        width: 100%;
        text-align: center;
    }
    
    .btn-download {
        margin-top: 1rem;
    }
    
    .hero {
        min-height: auto;
        padding: 100px 0 60px;
    }

    .hero-visual {
        display: none;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .download-platforms {
        flex-direction: column;
        align-items: center;
    }
    
    .platform-btn {
        max-width: 100%;
        width: 100%;
    }
    
    .hero-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
    }
    
    .stat-item {
        padding: 1rem 0.5rem;
    }
    
    .stat-number {
        font-size: 1.2rem;
    }
    
    .stat-label {
        font-size: 0.75rem;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .step-arrow {
        display: none;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .why-local-grid {
        grid-template-columns: 1fr;
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .data-flow {
        flex-direction: column;
        gap: 1rem;
    }
    
    .data-arrow {
        transform: rotate(90deg);
    }
    
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-cta {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-brand {
        justify-content: center;
    }
    
    .footer-links-group ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem 1.5rem;
    }
    
    .footer-links-group li {
        margin-bottom: 0;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title { font-size: 1.5rem; }
    .hero-content h1 { font-size: 1.5rem; }
    .hero-image-wrapper { max-width: 280px; }
    .hero-stats { grid-template-columns: 1fr; gap: 0.8rem; }
    .use-cases-grid { grid-template-columns: 1fr; }
    .back-to-top { bottom: 20px; right: 20px; width: 42px; height: 42px; }
}