:root {
    --main: #b85c38;
    --dark: #222;
    --text: #68615d;
    --bg: #faf7f3;
    --line: #eadfd8;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: 'Be Vietnam Pro', sans-serif;
    color: var(--dark);
    background: #fff;
}

.site-header {
    background: #fff;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-brand {
    letter-spacing: 1px;
}

    .navbar-brand span {
        color: var(--main);
    }

.nav-link {
    font-weight: 600;
    color: #4c4744 !important;
}

    .nav-link:hover, .nav-link.active {
        color: var(--main) !important;
    }

.hero-section {
    padding: 42px 0 30px;
}

.hero-box {
    background: var(--bg);
    border-radius: 24px;
    padding: 42px;
    border: 1px solid var(--line);
}

.small-title {
    color: var(--main);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
}

.hero-box h1 {
    font-size: clamp(40px, 5vw, 64px);
    font-weight: 700;
    line-height: 1.08;
    margin: 14px 0 18px;
}

    .hero-box h1 span {
        color: var(--main);
    }

.hero-box p {
    color: var(--text);
    line-height: 1.7;
    max-width: 560px;
}

.hero-image {
    width: 100%;
    height: 440px;
    object-fit: cover;
    border-radius: 18px;
}

.btn-main, .btn-detail {
    display: inline-block;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: .2s;
}

.btn-main {
    background: var(--main);
    color: #fff;
    padding: 12px 20px;
}

    .btn-main:hover {
        background: #97472b;
        color: #fff;
    }

.product-section {
    padding: 65px 0 80px;
}

.section-heading {
    margin-bottom: 34px;
}

    .section-heading h2 {
        font-size: 38px;
        font-weight: 700;
        margin: 8px 0;
    }

    .section-heading p {
        color: var(--text);
    }

.product-card {
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    background: #fff;
    transition: .25s;
}

    .product-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 14px 35px rgba(0,0,0,.08);
    }

.product-image {
    width: 100%;
    height: 330px;
    object-fit: cover;
}

.product-card h5 {
    font-weight: 700;
    margin-bottom: 8px;
}

.product-price {
    color: var(--main);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 14px;
}

.btn-detail {
    background: var(--dark);
    color: #fff;
    padding: 10px 16px;
}

    .btn-detail:hover {
        background: var(--main);
        color: #fff;
    }

.detail-section {
    padding: 70px 0;
    background: var(--bg);
    min-height: 75vh;
}

.detail-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 22px;
    padding: 34px;
}

.detail-image {
    width: 100%;
    height: 540px;
    object-fit: cover;
    border-radius: 16px;
}

.detail-card h1 {
    font-size: 46px;
    font-weight: 700;
    margin: 12px 0;
}

.detail-price {
    color: var(--main);
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 18px;
}

.detail-description {
    color: var(--text);
    line-height: 1.8;
}

.info-row {
    display: flex;
    justify-content: space-between;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    padding: 14px 0;
    margin-top: 22px;
}

.site-footer {
    background: #222;
    color: #ddd;
}

    .site-footer h5 {
        color: #fff;
    }

    .site-footer p, .site-footer small {
        color: #aaa;
    }

@media (max-width: 768px) {
    .hero-box {
        padding: 26px;
    }

    .hero-image {
        height: 320px;
    }

    .product-image {
        height: 300px;
    }

    .detail-card {
        padding: 20px;
    }

    .detail-image {
        height: 400px;
    }

    .detail-card h1 {
        font-size: 34px;
    }
}