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

:root {
    --primary-color: #4B3831;
    --accent-color: #CA4213;
    --light-bg: #F5F5F5;
    --white: #FFFFFF;
    --text-dark: #333333;
    --text-light: #666666;
    --border-color: #E0E0E0;
    --gray-placeholder: #CCCCCC;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    min-width: 320px;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }

p {
    margin-bottom: 1rem;
    color: var(--text-light);
    font-size: clamp(0.9rem, 2vw, 1rem);
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid var(--accent-color);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 15px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    font-weight: 700;
    color: var(--primary-color);
}

.logo svg,
.logo img {
    width: 40px;
    height: 40px;
}

nav {
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu li a {
    color: var(--primary-color);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    font-size: 0.95rem;
}

.nav-menu li a:hover,
.nav-menu li a.active {
    color: var(--accent-color);
}

.nav-menu li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.nav-menu li a:hover::after,
.nav-menu li a.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    background: none;
    border: none;
    padding: 5px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--primary-color);
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 2px;
}

.hero {
    position: relative;
    min-height: clamp(400px, 60vh, 600px);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, #5d4a42 100%);
    overflow: hidden;
    padding: 2rem 15px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('../image/picture.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.3;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    color: var(--white);
    max-width: 800px;
    padding: 2rem;
}

.hero h1 {
    color: var(--white);
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    color: var(--white);
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    margin-bottom: 2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    background-color: var(--accent-color);
    color: var(--white);
    border-radius: 5px;
    font-weight: 600;
    border: 2px solid var(--accent-color);
    transition: all 0.3s ease;
    cursor: pointer;
    text-align: center;
    font-size: 1rem;
}

.btn:hover {
    background-color: transparent;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(202, 66, 19, 0.3);
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--white);
    color: var(--white);
}

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

section {
    padding: clamp(3rem, 8vw, 5rem) 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    position: relative;
    display: inline-block;
    padding-bottom: 1rem;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--accent-color);
}

.section-subtitle {
    color: var(--text-light);
    max-width: 700px;
    margin: 1rem auto 0;
    text-align: center;
}

.grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
    background-color: var(--white);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.card-image {
    width: 100%;
    height: 250px;
    background-color: var(--gray-placeholder);
    object-fit: cover;
}

.card-content {
    padding: 1.5rem;
}

.card-content h3 {
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.card-content p {
    color: var(--text-light);
    margin-bottom: 1rem;
}

.card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-bg);
    border-radius: 50%;
    border: 2px solid var(--accent-color);
}

.card-icon svg {
    width: 30px;
    height: 30px;
    stroke: var(--accent-color);
    fill: none;
    stroke-width: 2;
}

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

.feature-card {
    text-align: center;
    padding: 2rem 1rem;
}

.product-item {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    margin-bottom: 3rem;
}

.product-image {
    width: 100%;
    max-width: 500px;
    height: 350px;
    background-color: var(--gray-placeholder);
    border-radius: 8px;
    object-fit: cover;
}

.product-info {
    flex: 1;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background-color: var(--light-bg);
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
}

.info-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--accent-color);
    fill: none;
    stroke-width: 2;
}

.info-text h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.info-text p {
    margin: 0;
    color: var(--text-light);
}

.map-container {
    width: 100%;
    height: 450px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-top: 2rem;
}

.map-container iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
    display: block;
}

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

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

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.success-container {
    text-align: center;
    max-width: 600px;
    margin: 5rem auto;
    padding: 3rem 2rem;
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    background-color: #4CAF50;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.success-icon svg {
    width: 50px;
    height: 50px;
    stroke: var(--white);
    fill: none;
    stroke-width: 3;
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.1);
        padding: 2rem 0;
        gap: 0;
        border-top: 3px solid var(--accent-color);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        margin: 0;
        width: 100%;
    }

    .nav-menu li a {
        display: block;
        padding: 1rem;
        width: 100%;
    }

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

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

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

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

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

    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .header-container {
        padding: 0.75rem 10px;
    }

    section {
        padding: 2rem 0;
    }

    .grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .card-image {
        height: 200px;
    }

    .hero {
        min-height: 350px;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .map-container {
        height: 300px;
    }
}

@media (max-width: 360px) {
    .logo {
        font-size: 1rem;
    }

    .logo svg,
    .logo img {
        width: 35px;
        height: 35px;
    }

    .card-content {
        padding: 1rem;
    }
}

@media print {
    header,
    footer,
    .mobile-menu-toggle,
    .btn {
        display: none;
    }
}