/* ========================================
   河北一分利办福食品有限公司 - 企业官网样式
   风格：食品/B2B工业风 · 暖色调 · 移动端优先
   ======================================== */

/* ---- 基础重置与变量 ---- */
:root {
    --color-primary: #8B2E1E;
    --color-primary-dark: #6B1F10;
    --color-secondary: #D4652A;
    --color-accent: #F5A623;
    --color-bg: #FFF8F3;
    --color-bg-alt: #F5EDE6;
    --color-dark: #1A1A2E;
    --color-text: #2D1B14;
    --color-text-light: #5C4A42;
    --color-text-muted: #8B7B72;
    --color-white: #FFFFFF;
    --color-border: #E8DDD4;
    
    --font-main: 'Noto Sans SC', system-ui, -apple-system, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    
    --shadow-sm: 0 1px 2px rgba(45, 27, 20, 0.04);
    --shadow-md: 0 4px 16px rgba(45, 27, 20, 0.08);
    --shadow-lg: 0 8px 32px rgba(45, 27, 20, 0.12);
    --shadow-xl: 0 16px 48px rgba(45, 27, 20, 0.16);
    
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ---- 按钮 ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255,255,255,0.5);
}

.btn-secondary:hover {
    background: var(--color-white);
    color: var(--color-primary);
    border-color: var(--color-white);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* ---- 导航栏 ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

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

.logo-icon svg {
    width: 40px;
    height: 40px;
    display: block;
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-brand {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1.2;
    letter-spacing: -0.3px;
}

.logo-sub {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    line-height: 1.3;
    margin-top: 2px;
}

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

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2.5px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    gap: 6px;
    align-items: center;
}

.nav-link {
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    border-radius: var(--radius-sm);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background: rgba(139, 46, 30, 0.06);
}

/* ---- 首屏 Banner ---- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--color-dark);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(139, 46, 30, 0.4) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(212, 101, 42, 0.3) 0%, transparent 40%),
        radial-gradient(ellipse at 50% 80%, rgba(245, 166, 35, 0.15) 0%, transparent 50%),
        linear-gradient(135deg, var(--color-dark) 0%, #2D1B14 50%, var(--color-dark) 100%);
    z-index: 1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.02'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    padding: 0 20px;
    color: var(--color-white);
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(245, 166, 35, 0.15);
    border: 1px solid rgba(245, 166, 35, 0.3);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-accent);
    margin-bottom: 28px;
    letter-spacing: 1px;
}

.hero-title {
    font-size: clamp(2.2rem, 5.5vw, 4rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-title .highlight {
    color: var(--color-accent);
    position: relative;
}

.hero-title .highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    right: 0;
    height: 8px;
    background: rgba(245, 166, 35, 0.3);
    border-radius: 4px;
    z-index: -1;
}

.hero-subtitle {
    font-size: clamp(0.95rem, 2vw, 1.15rem);
    color: rgba(255,255,255,0.7);
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
}

.stat-num {
    font-size: 2.4rem;
    font-weight: 900;
    color: var(--color-white);
    line-height: 1;
}

.stat-unit {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.6);
    margin-left: 4px;
}

.stat-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.5);
    font-weight: 400;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.4);
    font-size: 0.75rem;
    letter-spacing: 2px;
}

.scroll-indicator {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255,255,255,0.3);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--color-accent);
    border-radius: 2px;
    animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(12px); opacity: 0.3; }
}

/* ---- 通用区块 ---- */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header.light .section-tag,
.section-header.light .section-title,
.section-header.light .section-desc {
    color: var(--color-white);
}

.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-secondary);
    letter-spacing: 3px;
    margin-bottom: 12px;
}

.section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    color: var(--color-dark);
    margin-bottom: 12px;
    line-height: 1.2;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text-muted);
    max-width: 500px;
    margin: 0 auto;
}

/* ---- 公司介绍 ---- */
.about {
    background: var(--color-bg);
}

.about-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 24px;
}

.about-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.about-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.about-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 16px;
}

.about-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

.about-card p + p {
    margin-top: 12px;
}

.about-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.about-list li {
    position: relative;
    padding-left: 24px;
    color: var(--color-text-light);
    font-size: 0.95rem;
}

.about-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: 700;
}

/* ---- 产品中心 ---- */
.products {
    background: var(--color-bg-alt);
}

.product-showcase {
    margin-bottom: 40px;
}

.product-gallery {
    margin-bottom: 64px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.gallery-grid img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.gallery-grid img:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-md);
}

@media (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    .gallery-grid img {
        height: 150px;
    }
}

.product-hero {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 0;
    background: var(--color-white);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.product-visual {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.product-visual::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -30%;
    width: 80%;
    height: 120%;
    background: radial-gradient(circle, rgba(245,166,35,0.15) 0%, transparent 70%);
}

.product-badge-main {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(255,255,255,0.15);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 20px;
    width: fit-content;
}

.product-name {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
    line-height: 1.2;
}

.product-process {
    font-size: 1.1rem;
    color: var(--color-accent);
    font-weight: 600;
    margin-bottom: 24px;
}

.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag {
    padding: 6px 14px;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 500;
}

.product-specs {
    padding: 36px;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.spec-row {
    display: flex;
    align-items: baseline;
    padding: 16px 0;
    border-bottom: 1px solid var(--color-border);
    gap: 16px;
}

.spec-row:last-child {
    border-bottom: none;
}

.spec-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-muted);
    min-width: 60px;
    flex-shrink: 0;
}

.spec-value {
    font-size: 0.95rem;
    color: var(--color-text);
    font-weight: 500;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-secondary);
}

.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 16px;
    display: block;
}

.feature-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

/* ---- 客户方案 ---- */
.clients {
    background: var(--color-bg);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 16px;
}

.client-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}

.client-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: var(--color-secondary);
}

.client-icon {
    font-size: 2.4rem;
    margin-bottom: 16px;
}

.client-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.client-tag {
    font-size: 0.75rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.client-features {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.client-features li {
    font-size: 0.85rem;
    color: var(--color-text-light);
    position: relative;
    padding-left: 16px;
    line-height: 1.6;
}

.client-features li::before {
    content: '·';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
    font-weight: 700;
}

.client-cta {
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.client-cta span {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ---- 供应链优势 ---- */
.advantage {
    background: linear-gradient(135deg, var(--color-dark) 0%, #2D1B14 100%);
    position: relative;
    overflow: hidden;
}

.advantage::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(ellipse at 80% 50%, rgba(212, 101, 42, 0.08) 0%, transparent 60%);
}

.advantage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    position: relative;
    z-index: 1;
}

.adv-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.adv-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(245, 166, 35, 0.3);
    transform: translateY(-4px);
}

.adv-large {
    grid-column: span 1;
}

.adv-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: rgba(245, 166, 35, 0.3);
    line-height: 1;
    margin-bottom: 16px;
}

.adv-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 12px;
}

.adv-content p {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
    margin-bottom: 16px;
}

.adv-metric {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.metric-val {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-accent);
}

.metric-label {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

/* ---- 合作流程 ---- */
.process {
    background: var(--color-bg-alt);
}

.process-timeline {
    display: flex;
    align-items: stretch;
    gap: 0;
    justify-content: center;
}

.process-step {
    flex: 1;
    max-width: 260px;
    text-align: center;
    padding: 0 16px;
}

.step-marker {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    position: relative;
    box-shadow: 0 4px 16px rgba(139, 46, 30, 0.3);
}

.step-content h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 12px;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
}

.process-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--color-secondary);
    font-weight: 700;
    padding: 0 8px;
    align-self: center;
    opacity: 0.6;
}

/* ---- 联系我们 ---- */
.contact {
    background: var(--color-bg);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 40px;
    align-items: start;
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.contact-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.contact-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-secondary);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.contact-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.contact-detail {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

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

/* 表单 */
.contact-form-wrap {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.contact-form h3 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.form-subtitle {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 28px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-text-light);
    margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-main);
    font-size: 0.95rem;
    color: var(--color-text);
    background: var(--color-bg);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-secondary);
    background: var(--color-white);
    box-shadow: 0 0 0 4px rgba(212, 101, 42, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 16px;
}

/* ---- 页脚 ---- */
.footer {
    background: var(--color-dark);
    color: rgba(255,255,255,0.6);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.footer-logo svg {
    width: 36px;
    height: 36px;
}

.footer-logo span {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.5);
}

.footer-links h4,
.footer-contact h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 20px;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.5);
    transition: var(--transition);
}

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

.footer-contact p {
    font-size: 0.9rem;
    margin-bottom: 8px;
    color: rgba(255,255,255,0.5);
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 24px 0;
    text-align: center;
}

.footer-bottom p {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.3);
    margin-bottom: 4px;
}

/* ---- 动画 ---- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* ---- 响应式 ---- */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
    .about-main {
        grid-column: span 2;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantage-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .adv-large {
        grid-column: span 2;
    }
    
    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--color-white);
        flex-direction: column;
        padding: 20px;
        gap: 4px;
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    
    .nav-link {
        display: block;
        padding: 12px 16px;
        font-size: 1rem;
        width: 100%;
        text-align: center;
    }
    
    .hero-stats {
        gap: 24px;
    }
    
    .stat-num {
        font-size: 1.8rem;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    .about-main {
        grid-column: span 1;
    }
    
    .product-hero {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .advantage-grid {
        grid-template-columns: 1fr;
    }
    
    .adv-large {
        grid-column: span 1;
    }
    
    .clients-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        flex-direction: column;
        gap: 32px;
    }
    
    .process-step {
        max-width: 100%;
    }
    
    .process-arrow {
        transform: rotate(90deg);
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .container {
        padding: 0 16px;
    }
    
    .hero-content {
        padding: 0 16px;
    }
    
    .product-visual,
    .product-specs {
        padding: 28px;
    }
    
    .contact-form-wrap {
        padding: 28px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-badge {
        font-size: 0.75rem;
        padding: 6px 14px;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .product-name {
        font-size: 1.5rem;
    }
}