/* ========================================
   云梦智能 - BMW-inspired Dark Enterprise Website
   ======================================== */

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

:root {
    /* BMW-inspired dark palette */
    --color-bg-primary: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-card: #141414;
    --color-bg-card-hover: #1c1c1c;

    /* Blue accent system */
    --color-accent: #0066ff;
    --color-accent-light: #3388ff;
    --color-accent-glow: rgba(0, 102, 255, 0.3);
    --color-accent-subtle: rgba(0, 102, 255, 0.08);

    /* White & grays */
    --color-white: #ffffff;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    --space-5xl: 8rem;

    /* Layout */
    --max-width: 1280px;
    --header-height: 72px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-slower: 600ms ease;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-primary);
    color: var(--color-gray-300);
    line-height: 1.7;
    font-size: 16px;
    overflow-x: hidden;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    color: var(--color-white);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

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

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

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    box-shadow: 0 0 30px var(--color-accent-glow);
}

.btn-outline {
    background: transparent;
    color: var(--color-white);
    border: 1px solid var(--color-gray-700);
}

.btn-outline:hover {
    border-color: var(--color-gray-400);
    background: var(--color-gray-800);
}

.btn-text {
    background: none;
    color: var(--color-accent-light);
    padding: 0.875rem 0;
}

.btn-text:hover {
    color: var(--color-accent);
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1rem;
}

/* ========================================
   Header / Navigation
   ======================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}

.header.scrolled {
    background: rgba(10, 10, 10, 0.95);
    border-bottom-color: rgba(255, 255, 255, 0.08);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

.logo img {
    height: 32px;
    width: auto;
}

.logo-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-white);
    letter-spacing: 0.05em;
}

.nav {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    flex: 1;
}

.nav-link {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    padding: var(--space-xs) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-white);
}

.nav-link.active::after,
.nav-link:hover::after {
    width: 100%;
}

.header-actions {
    flex-shrink: 0;
}

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

.nav-toggle span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-white);
    transition: all var(--transition-base);
}

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

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

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

/* ========================================
   Hero Section
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-glow {
    position: absolute;
    top: -20%;
    right: -10%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 70%);
    filter: blur(80px);
    opacity: 0.4;
}

.hero-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-4xl);
}

.hero-tagline {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-lg);
    font-family: var(--font-mono);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: var(--space-xl);
    letter-spacing: -0.03em;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--color-gray-400);
    max-width: 540px;
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

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

.hero-visual-inner {
    position: relative;
    width: 100%;
    max-width: 480px;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-gray-800);
    border-radius: 12px;
    position: relative;
}

.hero-stats::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: 12px;
    padding: 1px;
    background: linear-gradient(135deg, var(--color-accent-glow), transparent, var(--color-accent-glow));
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
}

.stat-item {
    text-align: center;
    padding: var(--space-lg);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-white);
    font-family: var(--font-mono);
    letter-spacing: -0.05em;
}

.stat-unit {
    font-size: 1.25rem;
    color: var(--color-accent-light);
    font-weight: 600;
}

.stat-label {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-gray-500);
    margin-top: var(--space-xs);
    letter-spacing: 0.05em;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-gray-600);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-gray-600), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.2); }
}

/* ========================================
   Sections
   ======================================== */

.section {
    padding: var(--space-5xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto var(--space-4xl);
}

.section-tag {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
}

.section-desc {
    font-size: 1.0625rem;
    color: var(--color-gray-400);
    line-height: 1.8;
}

/* ========================================
   About Section
   ======================================== */

.about {
    background: var(--color-bg-secondary);
}

/* About Hero Stats */
.about-hero {
    text-align: center;
    margin-bottom: var(--space-4xl);
    padding-bottom: var(--space-3xl);
    border-bottom: 1px solid var(--color-gray-800);
}

.about-hero-tagline {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-accent-light);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
}

.about-hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    margin-bottom: var(--space-3xl);
    letter-spacing: -0.03em;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.about-stat {
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    text-align: center;
    transition: all var(--transition-base);
}

.about-stat:hover {
    border-color: var(--color-accent-glow);
    background: var(--color-bg-card-hover);
    transform: translateY(-4px);
}

.about-stat-value {
    display: block;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--color-white);
    font-family: var(--font-mono);
    letter-spacing: -0.05em;
    margin-bottom: var(--space-sm);
}

.about-stat-label {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    line-height: 1.5;
}

/* About Description */
.about-description {
    max-width: 800px;
    margin: 0 auto var(--space-4xl);
}

.about-description p {
    font-size: 1rem;
    color: var(--color-gray-300);
    line-height: 1.9;
    margin-bottom: var(--space-lg);
}

.about-description p:last-child {
    margin-bottom: 0;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-3xl);
}

.about-card {
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.about-card:hover {
    background: var(--color-bg-card-hover);
    border-color: var(--color-gray-700);
    transform: translateY(-4px);
}

.about-card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    color: var(--color-accent-light);
}

.about-card-icon svg {
    width: 28px;
    height: 28px;
}

.about-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.about-card p {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    line-height: 1.7;
}

.about-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    align-items: center;
}

/* ========================================
   Features Section
   ======================================== */

.features {
    background: var(--color-bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.feature-card {
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-gray-700);
    background: var(--color-bg-card-hover);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.feature-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
    font-family: var(--font-mono);
    margin-bottom: var(--space-lg);
    letter-spacing: 0.1em;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
    line-height: 1.4;
}

.feature-card p {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    line-height: 1.7;
}

/* ========================================
   Products Section
   ======================================== */

.products {
    background: var(--color-bg-secondary);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
}

.product-card {
    padding: var(--space-3xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-gray-800);
    border-radius: 12px;
    position: relative;
    transition: all var(--transition-base);
}

.product-card:hover {
    border-color: var(--color-gray-700);
}

.product-card--featured {
    border-color: var(--color-accent-glow);
    background: linear-gradient(135deg, var(--color-bg-card) 0%, rgba(0, 102, 255, 0.05) 100%);
}

.product-badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    background: var(--color-accent);
    color: var(--color-white);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 4px;
    margin-bottom: var(--space-lg);
}

.product-badge--secondary {
    background: var(--color-gray-700);
}

.product-card h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
}

.product-desc {
    font-size: 1rem;
    color: var(--color-gray-400);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.product-features {
    list-style: none;
    margin-bottom: var(--space-2xl);
}

.product-features li {
    padding: var(--space-sm) 0;
    padding-left: var(--space-lg);
    position: relative;
    font-size: 0.9375rem;
    color: var(--color-gray-300);
    border-bottom: 1px solid var(--color-gray-800);
}

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

.product-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: calc(var(--space-sm) + 0.5em);
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
}

.product-actions {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* ========================================
   Capabilities Section
   ======================================== */

.capabilities {
    background: var(--color-bg-primary);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.capability-item {
    text-align: center;
    padding: var(--space-3xl) var(--space-2xl);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.capability-item:hover {
    border-color: var(--color-gray-700);
    background: var(--color-bg-card);
}

.capability-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-light);
    border: 1px solid var(--color-gray-700);
    border-radius: 50%;
}

.capability-icon svg {
    width: 28px;
    height: 28px;
}

.capability-item h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-md);
}

.capability-item p {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    line-height: 1.7;
}

/* ========================================
   Partners Section
   ======================================== */

.partners {
    background: var(--color-bg-secondary);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
}

.partner-card {
    padding: var(--space-3xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-gray-800);
    border-radius: 12px;
    transition: all var(--transition-base);
}

.partner-card:hover {
    border-color: var(--color-gray-700);
}

.partner-logo {
    height: 60px;
    display: flex;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.partner-logo img {
    max-height: 100%;
    width: auto;
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.partner-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.partner-card p {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    line-height: 1.8;
}

/* ========================================
   Team Section
   ======================================== */

.team {
    background: var(--color-bg-primary);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

.team-card {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
    transition: all var(--transition-base);
}

.team-card:hover {
    border-color: var(--color-gray-700);
    transform: translateY(-4px);
}

.team-avatar {
    width: 96px;
    height: 96px;
    margin: 0 auto var(--space-lg);
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--color-gray-700);
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.team-role {
    font-size: 0.8125rem;
    color: var(--color-accent-light);
    font-weight: 500;
}

/* ========================================
   CTA Section
   ======================================== */

.cta {
    background: var(--color-bg-secondary);
    text-align: center;
}

.cta-content {
    max-width: 640px;
    margin: 0 auto;
}

.cta-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    margin-bottom: var(--space-lg);
}

.cta-desc {
    font-size: 1.125rem;
    color: var(--color-gray-400);
    margin-bottom: var(--space-2xl);
}

.cta-actions {
    margin-bottom: var(--space-3xl);
}

.cta-qr {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xl);
    background: var(--color-bg-card);
    border: 1px solid var(--color-gray-800);
    border-radius: 8px;
}

.cta-qr img {
    width: 160px;
    height: 160px;
    object-fit: contain;
    border-radius: 4px;
}

.cta-qr p {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid var(--color-gray-800);
    padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-3xl);
}

.footer-brand .logo {
    margin-bottom: var(--space-md);
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-lg);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-links a,
.footer-links p {
    display: block;
    font-size: 0.875rem;
    color: var(--color-gray-500);
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-gray-800);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--color-gray-600);
}

/* ========================================
   Animations
   ======================================== */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slower), transform var(--transition-slower);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive - Tablet
   ======================================== */

@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-3xl);
        text-align: center;
    }

    .hero-desc {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-visual {
        order: -1;
    }

    .hero-visual-inner {
        max-width: 400px;
    }

    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .capabilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .team-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================================
   Responsive - Mobile
   ======================================== */

@media (max-width: 768px) {
    :root {
        --header-height: 64px;
        --space-4xl: 4rem;
        --space-5xl: 5rem;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-bg-primary);
        flex-direction: column;
        justify-content: center;
        gap: var(--space-2xl);
        transform: translateX(100%);
        transition: transform var(--transition-base);
    }

    .nav.open {
        transform: translateX(0);
    }

    .nav-link {
        font-size: 1.25rem;
    }

    .header-actions {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--header-height) + var(--space-3xl));
        padding-bottom: var(--space-3xl);
    }

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

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

    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--space-md);
        padding: var(--space-xl);
    }

    .stat-item {
        padding: var(--space-md);
        display: flex;
        align-items: baseline;
        gap: var(--space-sm);
        text-align: left;
    }

    .stat-number {
        font-size: 1.75rem;
    }

    .stat-label {
        margin-top: 0;
    }

    .hero-scroll {
        display: none;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-desc {
        font-size: 0.9375rem;
    }

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

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .about-stat {
        padding: var(--space-xl);
    }

    .about-stat-value {
        font-size: 1.75rem;
    }

    .about-description {
        padding: 0 var(--space-md);
    }

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

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

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

    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .product-card {
        padding: var(--space-2xl);
    }

    .product-actions {
        flex-direction: column;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .cta-qr img {
        width: 120px;
        height: 120px;
    }

    .about-actions {
        flex-direction: column;
        gap: var(--space-md);
    }
}

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

    .hero-title {
        font-size: 1.75rem;
    }

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

    .hero-actions {
        flex-direction: column;
    }

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