/* CSS Reset & Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: #1a1a1a;
    background: #fff;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { margin: 0; padding: 0; list-style: none; }

/* Variables */
:root {
    --orange: #E85A24;
    --orange-light: #fff3ed;
    --red: #E30613;
    --red-dark: #8a030a;
    --gold: #FFD100;
    --gold-dark: #c79e00;
    --black: #0d0d0d;
    --gray-50: #f8f8f8;
    --gray-100: #f2f2f2;
    --gray-200: #e5e5e5;
    --gray-500: #737373;
    --gray-700: #404040;
    --gray-900: #171717;
    --radius: 16px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 10px 30px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 50px rgba(0,0,0,0.12);
    --transition: 0.3s ease;
}

/* Container */
.container {
    width: min(1200px, 92%);
    margin-inline: auto;
}

/* Header */
.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: var(--transition);
}
.site-header.scrolled {
    box-shadow: var(--shadow-sm);
}
.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}
.logo-mark {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    background: var(--orange);
    color: #fff;
    border-radius: 8px;
    font-weight: 800;
    font-size: 1.1rem;
}
.main-nav {
    display: flex;
    gap: 32px;
}
.main-nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
    padding: 4px 0;
}
.main-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--orange);
    transition: var(--transition);
}
.main-nav a:hover { color: var(--orange); }
.main-nav a:hover::after { width: 100%; }
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-900);
    transition: var(--transition);
}

/* Hero */
.hero {
    position: relative;
    min-height: 100vh;
    display: grid;
    place-items: center;
    overflow: hidden;
    background: linear-gradient(135deg, #0d0d0d 0%, #1a1a1a 50%, #2a1209 100%);
    color: #fff;
    padding: 120px 0 80px;
}
.hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 80% 20%, rgba(232,90,36,0.18) 0%, transparent 40%),
                radial-gradient(circle at 20% 80%, rgba(227,6,19,0.12) 0%, transparent 40%);
    pointer-events: none;
}
.hero::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='0.03'%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: 0.4;
}
.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 860px;
}
.eyebrow {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--orange);
    margin-bottom: 20px;
}
.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    margin: 0 0 24px;
}
.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.35rem);
    color: rgba(255,255,255,0.75);
    max-width: 640px;
    margin: 0 auto 40px;
    font-weight: 300;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 64px;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 100px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    border: 2px solid transparent;
}
.btn-primary {
    background: var(--orange);
    color: #fff;
    box-shadow: 0 8px 24px rgba(232,90,36,0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(232,90,36,0.45);
    background: #f06b35;
}
.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255,255,255,0.35);
}
.btn-outline:hover {
    border-color: #fff;
    background: rgba(255,255,255,0.08);
}
.hero-stats {
    display: flex;
    justify-content: center;
    gap: 64px;
    flex-wrap: wrap;
}
.stat {
    text-align: center;
}
.stat strong {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}
.stat span {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.6);
    font-weight: 500;
}

/* Sections */
.section {
    padding: 100px 0;
}
.section-header {
    max-width: 760px;
    margin: 0 auto 64px;
    text-align: center;
}
.section-header h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.75rem);
    font-weight: 800;
    line-height: 1.15;
    margin: 16px 0 20px;
    letter-spacing: -0.02em;
}
.section-header p {
    color: var(--gray-500);
    font-size: 1.05rem;
}
.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--orange);
    background: var(--orange-light);
    padding: 6px 14px;
    border-radius: 100px;
}

/* About */
.about { background: var(--gray-50); }
.value-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.value-card {
    background: #fff;
    border-radius: var(--radius);
    padding: 32px 28px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.value-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.value-icon {
    width: 52px;
    height: 52px;
    border-radius: 12px;
    background: var(--icon-color);
    color: #fff;
    display: grid;
    place-items: center;
    margin-bottom: 20px;
}
.value-icon svg { width: 26px; height: 26px; }
.value-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 10px;
}
.value-card p {
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Brands */
.brands {
    background: var(--black);
    color: #fff;
}
.brands .section-header.light h2,
.brands .section-header.light p { color: #fff; }
.brands .section-tag { background: rgba(255,255,255,0.12); color: var(--gold); }
.brand-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.brand-card {
    display: flex;
    flex-direction: column;
    padding: 32px 28px;
    border-radius: var(--radius);
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.brand-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.4) 100%);
    opacity: 0;
    transition: var(--transition);
}
.brand-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255,255,255,0.25);
    box-shadow: var(--shadow-lg);
}
.brand-card:hover::before { opacity: 1; }
.brand-name {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 6px;
    position: relative;
    z-index: 1;
}
.brand-tagline {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
    position: relative;
    z-index: 1;
}
.winlife .brand-tagline { color: var(--orange); }
.winmaster .brand-tagline { color: #ff4d4d; }
.wintiik .brand-tagline { color: var(--gold); }
.battery .brand-tagline { color: #fff176; }
.brand-desc {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.65);
    margin-bottom: 24px;
    flex-grow: 1;
    position: relative;
    z-index: 1;
}
.brand-cta {
    font-weight: 600;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}
.winlife:hover .brand-cta { color: var(--orange); }
.winmaster:hover .brand-cta { color: #ff4d4d; }
.wintiik:hover .brand-cta { color: var(--gold); }
.battery:hover .brand-cta { color: #fff176; }

/* Products */
.products { background: #fff; }
.brand-section { margin-bottom: 120px; }
.brand-section:last-child { margin-bottom: 0; }
.brand-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 56px;
}
.brand-hero.reverse { direction: rtl; }
.brand-hero.reverse > * { direction: ltr; }
.brand-hero-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}
.brand-hero-text h2 {
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 18px;
    letter-spacing: -0.02em;
}
.brand-hero-text p {
    color: var(--gray-500);
    font-size: 1.05rem;
}
.brand-hero-image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: var(--gray-100);
}
.brand-hero-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.brand-hero-image:hover img { transform: scale(1.02); }

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.product-grid.two-col { grid-template-columns: repeat(2, 1fr); }
.product-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}
.product-image {
    aspect-ratio: 4/3;
    display: grid;
    place-items: center;
    background: var(--gray-100);
    font-weight: 800;
    font-size: 1.25rem;
    color: #fff;
    position: relative;
    overflow: hidden;
}
.product-image.placeholder::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(0,0,0,0.05) 0%, rgba(0,0,0,0.2) 100%);
}
.product-image.placeholder span {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 0 16px;
}
.product-image.orange { background: linear-gradient(135deg, #f07a4a 0%, #E85A24 100%); }
.product-image.red { background: linear-gradient(135deg, #ff4d4d 0%, #E30613 100%); }
.product-image.gold { background: linear-gradient(135deg, #ffe066 0%, #FFD100 100%); color: #1a1a1a; }
.product-info {
    padding: 24px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}
.product-info h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.3;
}
.product-subtitle {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin: -8px 0 12px;
    font-weight: 600;
}
.product-info ul {
    margin-top: auto;
}
.product-info li {
    position: relative;
    padding-left: 18px;
    font-size: 0.92rem;
    color: var(--gray-700);
    margin-bottom: 6px;
}
.product-info li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 9px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--orange);
}
.winmaster-section .product-info li::before { background: var(--red); }
.wintiik-section .product-info li::before { background: var(--gold-dark); }
.battery-section .product-info li::before { background: var(--gold-dark); }

/* B2B */
.b2b { background: var(--gray-50); }
.b2b-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
    align-items: center;
}
.b2b-text h2 {
    font-size: clamp(1.7rem, 3vw, 2.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin: 16px 0 20px;
    letter-spacing: -0.02em;
}
.b2b-text > p {
    color: var(--gray-500);
    font-size: 1.05rem;
    margin-bottom: 32px;
}
.b2b-list {
    margin-bottom: 36px;
}
.b2b-list li {
    position: relative;
    padding-left: 28px;
    margin-bottom: 16px;
    color: var(--gray-700);
    font-size: 0.98rem;
}
.b2b-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    top: 0;
    width: 20px;
    height: 20px;
    background: var(--orange);
    color: #fff;
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: 0.75rem;
    font-weight: 700;
}
.b2b-visual {
    display: grid;
    place-items: center;
}
.b2b-card {
    width: 100%;
    max-width: 380px;
    aspect-ratio: 1/1;
    border-radius: var(--radius);
    background: var(--black);
    color: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 40px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}
.b2b-card::before {
    content: '';
    position: absolute;
    inset: -50%;
    background: conic-gradient(var(--orange), var(--red), var(--gold), var(--orange));
    opacity: 0.15;
    animation: rotate 10s linear infinite;
}
@keyframes rotate { to { transform: rotate(360deg); } }
.b2b-card-title {
    font-size: 2.5rem;
    font-weight: 800;
    position: relative;
    z-index: 1;
}
.b2b-card-sub {
    color: rgba(255,255,255,0.6);
    margin: 8px 0 28px;
    position: relative;
    z-index: 1;
}
.b2b-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    position: relative;
    z-index: 1;
}
.badge {
    padding: 8px 16px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 700;
}
.badge.winlife { background: var(--orange); }
.badge.winmaster { background: var(--red); }
.badge.wintiik { background: var(--gold); color: #1a1a1a; }
.badge.battery { background: #444; }

/* Contact */
.contact {
    background: var(--black);
    color: #fff;
}
.contact .section-header.light h2,
.contact .section-header.light p { color: #fff; }
.contact .section-tag { background: rgba(255,255,255,0.12); color: var(--gold); }
.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.contact-card {
    display: flex;
    flex-direction: column;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius);
    padding: 28px;
    transition: var(--transition);
}
.contact-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-4px);
}
.contact-card.address { grid-column: 1 / -1; }
.contact-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--orange);
    margin-bottom: 10px;
}
.contact-card strong {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.4;
}

/* Footer */
.site-footer {
    background: #080808;
    color: rgba(255,255,255,0.6);
    padding: 40px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
}
.footer-brand {
    display: flex;
    align-items: center;
    gap: 14px;
}
.footer-brand strong {
    display: block;
    color: #fff;
    font-size: 1.1rem;
}
.footer-brand span { font-size: 0.85rem; }
.footer-copy {
    font-size: 0.9rem;
    margin: 0;
}

/* Back to top */
.back-to-top {
    position: fixed;
    right: 24px;
    bottom: 24px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--orange);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 1.25rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    box-shadow: var(--shadow);
    z-index: 99;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover { background: #f06b35; }

/* Responsive */
@media (max-width: 1024px) {
    .value-grid { grid-template-columns: repeat(2, 1fr); }
    .brand-grid { grid-template-columns: repeat(2, 1fr); }
    .product-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: repeat(2, 1fr); }
    .b2b-grid { grid-template-columns: 1fr; }
    .b2b-visual { order: -1; }
}
@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        inset: 72px 0 auto 0;
        background: #fff;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow);
        transform: translateY(-120%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }
    .main-nav.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav-toggle { display: flex; }
    .hero-stats { gap: 32px; }
    .brand-hero { grid-template-columns: 1fr; }
    .brand-hero.reverse { direction: ltr; }
    .value-grid,
    .brand-grid,
    .product-grid,
    .product-grid.two-col,
    .contact-grid { grid-template-columns: 1fr; }
    .contact-card.address { grid-column: auto; }
    .footer-container { flex-direction: column; text-align: center; }
}