/* ===== CSS Variables ===== */
:root {
    --c-primary: #0a3d62;
    --c-primary-light: #1a5276;
    --c-primary-dark: #062845;
    --c-accent: #f39c12;
    --c-accent-light: #f5b041;
    --c-accent-dark: #d68910;
    --c-bg: #ffffff;
    --c-bg-alt: #f4f6f9;
    --c-bg-dark: #0a3d62;
    --c-text: #1a1a2e;
    --c-text-light: #5a6473;
    --c-text-muted: #8e99a8;
    --c-border: #e4e8ed;
    --c-border-light: #eef1f5;
    --c-white: #ffffff;
    --c-success: #27ae60;
    --c-danger: #e74c3c;

    --font-heading: 'Poppins', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, -apple-system, sans-serif;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --shadow-sm: 0 1px 3px rgba(10,61,98,.08);
    --shadow-md: 0 4px 16px rgba(10,61,98,.1);
    --shadow-lg: 0 12px 40px rgba(10,61,98,.12);
    --shadow-xl: 0 20px 60px rgba(10,61,98,.15);

    --header-h: 64px;
    --container-w: 1200px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: var(--font-body);
    color: var(--c-text);
    background: var(--c-bg);
    line-height: 1.6;
    overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
input, textarea { font-family: inherit; }

.container { max-width: var(--container-w); margin: 0 auto; padding: 0 20px; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 15px;
    transition: var(--transition);
    white-space: nowrap;
    cursor: pointer;
}
.btn--primary {
    background: var(--c-accent);
    color: #fff;
    box-shadow: 0 4px 14px rgba(243,156,18,.35);
}
.btn--primary:hover { background: var(--c-accent-dark); transform: translateY(-2px); box-shadow: 0 6px 20px rgba(243,156,18,.4); }
.btn--outline {
    background: transparent;
    color: var(--c-primary);
    border: 2px solid var(--c-primary);
}
.btn--outline:hover { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.btn--dark { background: var(--c-primary); color: #fff; }
.btn--dark:hover { background: var(--c-primary-light); }
.btn--block { width: 100%; }
.btn--sm { padding: 8px 18px; font-size: 13px; }

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    height: var(--header-h);
    background: rgba(255,255,255,.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}
.header.scrolled { box-shadow: var(--shadow-sm); border-bottom-color: var(--c-border-light); }
.header__container {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-family: var(--font-heading); }
.logo__icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
    color: #fff;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px; font-weight: 800;
}
.logo__text { font-size: 18px; color: var(--c-primary); }
.logo__accent { color: var(--c-accent); }
.logo--footer .logo__text { color: #fff; }

.nav { display: flex; gap: 4px; }
.nav__link {
    padding: 8px 16px;
    font-size: 15px;
    font-weight: 500;
    color: var(--c-text-light);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}
.nav__link:hover { color: var(--c-primary); background: var(--c-bg-alt); }
.nav__link.active { color: var(--c-primary); font-weight: 600; }
.nav__link.active::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 20px; height: 3px;
    background: var(--c-accent);
    border-radius: 2px;
}

.header__actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
    width: 38px; height: 38px;
    display: flex; align-items: center; justify-content: center;
    color: var(--c-text-light);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}
.icon-btn:hover { background: var(--c-bg-alt); color: var(--c-primary); }

.hamburger { display: none; flex-direction: column; gap: 4px; width: 38px; height: 38px; align-items: center; justify-content: center; }
.hamburger span { width: 20px; height: 2px; background: var(--c-text); border-radius: 2px; transition: var(--transition); }
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

.search-bar {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: #fff;
    padding: 16px 20px;
    box-shadow: var(--shadow-md);
    display: none;
    align-items: center;
    gap: 12px;
    border-top: 1px solid var(--c-border-light);
}
.search-bar.active { display: flex; }
.search-bar input {
    flex: 1;
    border: 2px solid var(--c-border);
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    font-size: 15px;
    outline: none;
    transition: var(--transition);
}
.search-bar input:focus { border-color: var(--c-primary); }
.search-bar__close { font-size: 24px; color: var(--c-text-muted); padding: 4px 8px; }

/* ===== Hero ===== */
.hero {
    position: relative;
    min-height: 480px;
    display: flex;
    align-items: center;
    padding: calc(var(--header-h) + 40px) 20px 48px;
    overflow: hidden;
    background: #0f172a;
}
.hero__bg { position: absolute; inset: 0; z-index: 0; }
.hero__collage {
    position: absolute; inset: 0;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    grid-auto-rows: min-content;
    align-content: center;
}
.hero__tile { background-size: cover; background-position: center; aspect-ratio: 1 / 1; }
.hero__shade {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(15,23,42,.84) 0%, rgba(15,23,42,.52) 46%, rgba(15,23,42,.8) 100%);
}
.hero__content { position: relative; z-index: 1; max-width: 860px; margin: 0 auto; text-align: center; }
.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(30px, 4.5vw, 48px);
    font-weight: 800;
    line-height: 1.15;
    color: #fff;
    margin-bottom: 14px;
}
.gradient-text {
    background: linear-gradient(135deg, #f59e0b, #fbbf24);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero__subtitle {
    font-size: clamp(15px, 1.8vw, 18px);
    color: rgba(255,255,255,.85);
    max-width: 620px;
    margin: 0 auto 24px;
    line-height: 1.6;
}
.hero__actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 32px; }
.hero__stats { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.hero__stat { text-align: center; }
.hero__stat strong {
    display: block;
    font-family: var(--font-heading);
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 800;
    color: #fff;
}
.hero__stat span { font-size: 12px; color: rgba(255,255,255,.65); text-transform: uppercase; letter-spacing: .8px; }

/* ===== Sections ===== */
.section { padding: 48px 0; }
.section--alt { background: var(--c-bg-alt); }
.section__header { text-align: center; max-width: 600px; margin: 0 auto 28px; }
.section__eyebrow {
    display: inline-block;
    color: var(--c-accent);
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}
.section__title {
    font-family: var(--font-heading);
    font-size: clamp(24px, 4vw, 36px);
    font-weight: 700;
    color: var(--c-text);
    margin-bottom: 12px;
    line-height: 1.3;
}
.section__desc { font-size: 16px; color: var(--c-text-light); }

/* ===== Categories Grid ===== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 14px;
}
.category-card {
    display: block;
    text-decoration: none;
    color: inherit;
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 1;
    cursor: pointer;
    transition: var(--transition);
    background: var(--c-primary);
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.category-card__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    transition: var(--transition);
    opacity: .85;
}
.category-card:hover .category-card__bg { transform: scale(1.1); opacity: 1; }
.category-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(10,61,98,.9) 0%, rgba(10,61,98,.3) 60%, transparent 100%);
}
.category-card__content {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 20px;
    color: #fff;
    z-index: 1;
}
.category-card__icon {
    width: 44px; height: 44px;
    background: rgba(255,255,255,.15);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    margin-bottom: 12px;
    color: var(--c-accent-light);
}
.category-card__name { font-family: var(--font-heading); font-size: 18px; font-weight: 700; }
.category-card__count { font-size: 13px; color: rgba(255,255,255,.7); margin-top: 2px; }

/* ===== Filter Bar ===== */
.filter-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 36px;
}
.filter-chip {
    padding: 8px 20px;
    border: 2px solid var(--c-border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    color: var(--c-text-light);
    transition: var(--transition);
    white-space: nowrap;
}
.filter-chip:hover { border-color: var(--c-primary); color: var(--c-primary); }
.filter-chip.active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }

/* ===== Products Grid ===== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}
.product-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--c-border-light);
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: transparent; }
.product-card__image {
    position: relative;
    aspect-ratio: 4/3;
    overflow: hidden;
    background: var(--c-bg-alt);
}
.product-card__image img {
    width: 100%; height: 100%;
    object-fit: cover;
    transition: var(--transition);
}
.product-card:hover .product-card__image img { transform: scale(1.08); }
.product-card__badge {
    position: absolute;
    top: 12px; left: 12px;
    padding: 4px 12px;
    background: rgba(10,61,98,.85);
    backdrop-filter: blur(4px);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
}
.product-card__badge--hot { background: var(--c-accent); }
.product-card__body { padding: 18px; }
.product-card__category {
    font-size: 12px;
    color: var(--c-accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}
.product-card__name {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    color: var(--c-text);
    margin-bottom: 8px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.product-card__desc {
    font-size: 13px;
    color: var(--c-text-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 14px;
}
.product-card__footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.product-card__price { font-family: var(--font-heading); font-size: 18px; font-weight: 700; color: var(--c-primary); }
.product-card__moq { font-size: 12px; color: var(--c-text-muted); }
.product-card__arrow {
    width: 32px; height: 32px;
    border-radius: 50%;
    background: var(--c-bg-alt);
    display: flex; align-items: center; justify-content: center;
    color: var(--c-primary);
    transition: var(--transition);
}
.product-card:hover .product-card__arrow { background: var(--c-accent); color: #fff; }

.products__load-more { text-align: center; margin-top: 40px; }
.products__empty { text-align: center; padding: 60px 20px; color: var(--c-text-muted); font-size: 16px; }

/* ===== About ===== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.about__text { color: var(--c-text-light); font-size: 16px; line-height: 1.8; margin-bottom: 16px; }
.about__features { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
.about__feature { display: flex; gap: 14px; align-items: flex-start; }
.about__feature-icon {
    width: 44px; height: 44px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light));
    color: #fff;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
}
.about__feature h4 { font-size: 15px; font-weight: 600; color: var(--c-text); margin-bottom: 2px; }
.about__feature p { font-size: 13px; color: var(--c-text-muted); }
.about__visual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}
.about__card {
    background: #fff;
    border: 1px solid var(--c-border-light);
    border-radius: var(--radius-lg);
    padding: 28px 24px;
    text-align: center;
    transition: var(--transition);
}
.about__card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
.about__card--accent { background: linear-gradient(135deg, var(--c-primary), var(--c-primary-light)); border-color: transparent; }
.about__card--accent .about__card-number { color: #fff; }
.about__card--accent .about__card-label { color: rgba(255,255,255,.8); }
.about__card-number { font-family: var(--font-heading); font-size: 36px; font-weight: 800; color: var(--c-primary); }
.about__card-label { font-size: 13px; color: var(--c-text-light); margin-top: 4px; }

/* ===== Contact ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
    align-items: start;
}
.contact__info { display: flex; flex-direction: column; gap: 24px; }
.contact__item { display: flex; gap: 16px; align-items: flex-start; }
.contact__icon {
    width: 48px; height: 48px;
    flex-shrink: 0;
    background: var(--c-primary);
    color: #fff;
    border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
}
.contact__item h4 { font-size: 15px; font-weight: 600; margin-bottom: 4px; }
.contact__item p { font-size: 14px; color: var(--c-text-light); line-height: 1.6; }
.contact__form {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
}
.form-group { margin-bottom: 16px; }
.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--c-border);
    border-radius: var(--radius-sm);
    font-size: 15px;
    color: var(--c-text);
    transition: var(--transition);
    outline: none;
}
.form-input:focus { border-color: var(--c-primary); }
.form-textarea { resize: vertical; min-height: 100px; }
.form-success {
    display: none;
    margin-top: 16px;
    padding: 12px 16px;
    background: rgba(39,174,96,.1);
    color: var(--c-success);
    border-radius: var(--radius-sm);
    font-size: 14px;
    text-align: center;
}
.form-success.show { display: block; }

/* ===== Footer ===== */
.footer { background: var(--c-primary-dark); color: rgba(255,255,255,.7); padding: 60px 0 0; }
.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    padding-bottom: 40px;
}
.footer__desc { font-size: 14px; line-height: 1.7; margin-top: 16px; max-width: 300px; }
.footer__col h5 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer__col a, .footer__col p { display: block; font-size: 14px; color: rgba(255,255,255,.6); margin-bottom: 10px; transition: var(--transition); }
.footer__col a:hover { color: var(--c-accent); }
.footer__bottom {
    border-top: 1px solid rgba(255,255,255,.1);
    padding: 20px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer__bottom p { font-size: 13px; }
.footer__social { display: flex; gap: 12px; }
.footer__social a {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,.1);
    display: flex; align-items: center; justify-content: center;
    color: rgba(255,255,255,.7);
    transition: var(--transition);
}
.footer__social a:hover { background: var(--c-accent); color: #fff; }

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10,30,50,.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow-y: auto;
}
.modal-overlay.active { display: flex; }
.modal {
    background: #fff;
    border-radius: var(--radius-xl);
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    box-shadow: var(--shadow-xl);
    animation: modalIn .35s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes modalIn { from { opacity: 0; transform: translateY(30px) scale(.96); } to { opacity: 1; transform: translateY(0) scale(1); } }
.modal__close {
    position: absolute;
    top: 16px; right: 16px;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: rgba(255,255,255,.9);
    color: var(--c-text);
    font-size: 22px;
    display: flex; align-items: center; justify-content: center;
    z-index: 10;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}
.modal__close:hover { background: var(--c-danger); color: #fff; }
.modal__body { padding: 0; }

/* Product detail layout */
.pd { display: grid; grid-template-columns: 1fr 1fr; }
.pd__gallery { position: relative; background: var(--c-bg-alt); }
.pd__main-img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
}
.pd__thumbs { display: flex; gap: 8px; padding: 12px; overflow-x: auto; }
.pd__thumb {
    width: 64px; height: 64px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
    flex-shrink: 0;
    transition: var(--transition);
}
.pd__thumb.active { border-color: var(--c-accent); }
.pd__thumb img { width: 100%; height: 100%; object-fit: cover; }
.pd__info { padding: 32px; }
.pd__category { font-size: 12px; color: var(--c-accent); font-weight: 600; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.pd__name { font-family: var(--font-heading); font-size: 24px; font-weight: 700; color: var(--c-text); margin-bottom: 12px; line-height: 1.3; }
.pd__desc { font-size: 14px; color: var(--c-text-light); line-height: 1.7; margin-bottom: 20px; }
.pd__specs { margin-bottom: 24px; }
.pd__specs h4 { font-size: 14px; font-weight: 600; margin-bottom: 10px; color: var(--c-text); }
.pd__spec-row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--c-border-light); font-size: 14px; }
.pd__spec-row:last-child { border-bottom: none; }
.pd__spec-key { color: var(--c-text-muted); }
.pd__spec-val { color: var(--c-text); font-weight: 500; }
.pd__price-row { display: flex; align-items: center; gap: 20px; margin-bottom: 20px; }
.pd__price { font-family: var(--font-heading); font-size: 28px; font-weight: 800; color: var(--c-primary); }
.pd__moq { font-size: 14px; color: var(--c-text-muted); }
.pd__actions { display: flex; gap: 12px; }

/* ===== Back to top ===== */
.back-to-top {
    position: fixed;
    bottom: 24px; right: 24px;
    width: 44px; height: 44px;
    background: var(--c-primary);
    color: #fff;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 900;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background: var(--c-accent); transform: translateY(-4px); }

/* ===== Responsive ===== */
@media (max-width: 968px) {
    .about-grid { grid-template-columns: 1fr; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .pd { grid-template-columns: 1fr; }
    .pd__info { padding: 24px; }
}

@media (max-width: 768px) {
    :root { --header-h: 56px; }
    .nav {
        position: fixed;
        top: var(--header-h);
        left: 0; right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px;
        gap: 4px;
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    .nav.active { transform: translateY(0); opacity: 1; visibility: visible; }
    .nav__link { padding: 12px 16px; }
    .nav__link.active::after { display: none; }
    .hamburger { display: flex; }
    .section { padding: 40px 0; }
    .section__header { margin-bottom: 24px; }
    .hero { padding-top: calc(var(--header-h) + 28px); }
    .hero__collage { grid-template-columns: repeat(2, 1fr); }
    .hero__stats { gap: 24px; }
    .hero__stat strong { font-size: 24px; }
    .categories-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .category-card__name { font-size: 15px; }
    .products-grid { grid-template-columns: repeat(2, 1fr); gap: 14px; }
    .product-card__body { padding: 12px; }
    .product-card__name { font-size: 14px; }
    .product-card__desc { display: none; }
    .product-card__price { font-size: 15px; }
    .product-card__arrow { display: none; }
    .about__features { grid-template-columns: 1fr; }
    .about__visual { grid-template-columns: 1fr 1fr; gap: 12px; }
    .about__card { padding: 20px 16px; }
    .about__card-number { font-size: 28px; }
    .contact__form { padding: 24px 20px; }
    .footer__grid { grid-template-columns: 1fr 1fr; gap: 28px; }
    .footer__bottom { flex-direction: column; text-align: center; }
    .filter-bar { gap: 8px; }
    .filter-chip { padding: 6px 14px; font-size: 13px; }
}

@media (max-width: 480px) {
    .hero__title { font-size: 28px; }
    .hero__subtitle { font-size: 14px; }
    .hero__actions { flex-direction: column; width: 100%; }
    .hero__actions .btn { width: 100%; }
    .hero__stats { gap: 16px; }
    .hero__stat span { font-size: 11px; }
    .products-grid { grid-template-columns: 1fr; }
    .categories-grid { grid-template-columns: 1fr 1fr; }
    .section__title { font-size: 22px; }
    .pd__info { padding: 20px; }
    .pd__name { font-size: 20px; }
    .pd__price { font-size: 22px; }
    .pd__actions { flex-direction: column; }
    .pd__actions .btn { width: 100%; }
    .back-to-top { bottom: 16px; right: 16px; }
}