/* ===== Reset & Base ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #1a1a2e;
    --primary-hover: #2d2d4a;
    --accent: #2A5FFF;
    --bg: #ffffff;
    --bg-light: #FAFAFA;
    --bg-warm: #F7F6F3;
    --bg-dark: #111111;
    --text: #1a1a1a;
    --text-sub: #888888;
    --text-light: #aaaaaa;
    --border: #EBEBEB;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-hover: 0 12px 40px rgba(0,0,0,0.08);
    --transition: cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans KR', -apple-system, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

body.menu-open {
    overflow: hidden;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13,17,23,0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: all 0.3s;
}

.header.scrolled {
    border-bottom-color: var(--border);
    box-shadow: 0 1px 8px rgba(0,0,0,0.04);
}

.header-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.2rem;
    font-weight: 900;
    color: #ffffff;
    letter-spacing: -0.5px;
    border: 2px solid rgba(255,255,255,0.3);
    padding: 4px 12px;
    border-radius: 8px;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav a {
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255,255,255,0.7);
    transition: color 0.2s;
}

.nav a:hover {
    color: #ffffff;
}

.header-cta {
    background: #2A5FFF;
    color: #fff;
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    transition: background 0.2s;
}

.header-cta:hover {
    background: #1A4AD4;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: 0.3s;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.mobile-menu.open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-inner {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 280px;
    background: #fff;
    padding: 80px 32px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    transform: translateX(100%);
    transition: transform 0.3s;
}

.mobile-menu.open .mobile-menu-inner {
    transform: translateX(0);
}

.mobile-menu-inner a {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text);
}

.mobile-menu-cta {
    background: var(--primary);
    color: #fff !important;
    padding: 14px 24px;
    border-radius: 12px;
    text-align: center;
    font-weight: 600;
    margin-top: 16px;
}

/* ===== Hero ===== */
.hero {
    padding: 120px 0 80px;
    background: var(--bg-dark);
    overflow: hidden;
}

.hero-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-text {
    flex: 1;
}

.hero-tag {
    display: inline-block;
    background: rgba(42,95,255,0.2);
    color: rgba(255,255,255,0.7);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero-headline {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.15;
    letter-spacing: -2px;
    margin-bottom: 20px;
    color: #ffffff;
}

.hero-accent {
    color: #2A5FFF;
}

.hero-sub {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.8;
    margin-bottom: 32px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 36px;
    padding: 20px 0;
    border-top: 1px solid rgba(255,255,255,0.1);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.stat strong {
    display: block;
    font-size: 1.8rem;
    font-weight: 900;
    color: #ffffff;
}

.stat span {
    font-size: 0.8rem;
    color: rgba(255,255,255,0.4);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-buttons {
    display: flex;
    gap: 12px;
}

.btn-primary {
    background: #2A5FFF;
    color: #fff;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.2s;
    display: inline-block;
}

.btn-primary:hover {
    background: #1A4AD4;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(42,95,255,0.3);
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    border: 1.5px solid rgba(255,255,255,0.2);
    transition: all 0.2s;
    display: inline-block;
}

.btn-secondary:hover {
    border-color: rgba(255,255,255,0.5);
}

.btn-outline {
    background: transparent;
    color: var(--text-sub);
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 500;
    border: 1.5px solid var(--border);
    transition: all 0.2s;
    display: inline-block;
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.hero-image {
    flex: 0 0 420px;
    height: 480px;
    border-radius: 0;
    overflow: visible;
    background: transparent;
    position: relative;
}

.hero-logo-bg {
    position: absolute;
    top: -35%;
    left: 50%;
    transform: translateX(-50%);
    width: 90%;
    height: auto;
    opacity: 0.15;
    z-index: 1;
    pointer-events: none;
    filter: none;
}

.hero-image img:not(.hero-logo-bg) {
    position: relative;
    z-index: 2;
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: bottom;
}

/* ===== Quick Links ===== */
.quick-links {
    padding: 64px 0 32px;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 800;
    text-align: center;
    letter-spacing: -1px;
    margin-bottom: 12px;
}

.section-title.left {
    text-align: left;
}

.section-sub {
    text-align: center;
    color: var(--text-sub);
    font-size: 0.95rem;
    margin-bottom: 40px;
}

.quick-grid {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-top: 32px;
}

.quick-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 40px;
    border-radius: var(--radius);
    border: 1.5px solid var(--border);
    background: #fff;
    transition: all 0.2s;
    cursor: pointer;
}

.quick-card:hover,
.quick-card.active {
    border-color: var(--primary);
    background: rgba(42,95,255,0.04);
    box-shadow: var(--shadow);
}

.quick-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: 14px;
}

.quick-card span {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
}

/* ===== Products ===== */
.products {
    padding: 48px 0 80px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.product-card {
    background: #fff;
    border-radius: var(--radius);
    border: 1.5px solid var(--border);
    overflow: hidden;
    transition: all 0.3s;
    position: relative;
}

.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary);
}

.product-badge {
    position: absolute;
    top: 16px;
    left: 16px;
    background: var(--primary);
    color: #fff;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 700;
    z-index: 2;
}

.product-badge.hot {
    background: #FF4757;
}

.product-thumb {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.product-thumb.blue {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
}

.product-thumb.purple {
    background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
}

.product-thumb.green {
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
}

.product-icon {
    font-size: 3.5rem;
}

.product-info {
    padding: 24px;
}

.product-info h3 {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.product-desc {
    font-size: 0.9rem;
    color: var(--text-sub);
    line-height: 1.6;
    margin-bottom: 16px;
}

.product-meta {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.product-tag {
    background: var(--bg-light);
    color: var(--text-sub);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 500;
}

.product-price {
    margin-bottom: 16px;
}

.price-amount {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text);
}

.price-label {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
}

.product-btn {
    display: block;
    text-align: center;
    padding: 12px;
    background: var(--bg-light);
    color: var(--primary);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.product-btn:hover {
    background: var(--primary);
    color: #fff;
}

/* ===== Reviews ===== */
.reviews {
    padding: 80px 0;
    background: var(--bg-light);
    overflow: hidden;
}

.review-slider-wrap {
    position: relative;
    overflow: hidden;
}

.review-slider-wrap::before,
.review-slider-wrap::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 80px;
    z-index: 2;
    pointer-events: none;
}

.review-slider-wrap::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-light), transparent);
}

.review-slider-wrap::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-light), transparent);
}

.review-slider {
    display: flex;
    gap: 24px;
    width: max-content;
    animation: reviewScroll 40s linear infinite;
    padding: 8px 0;
}

.review-slider:hover {
    animation-play-state: paused;
}

@keyframes reviewScroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.review-card {
    flex-shrink: 0;
    width: 380px;
    background: #fff;
    border-radius: var(--radius);
    padding: 28px;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

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

.review-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.review-badge {
    background: rgba(42,95,255,0.08);
    color: var(--primary);
    padding: 3px 10px;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 600;
}

.review-name {
    font-weight: 700;
    font-size: 0.95rem;
}

.review-text {
    font-size: 0.92rem;
    color: var(--text-sub);
    line-height: 1.7;
    margin-bottom: 16px;
}

.review-text strong {
    color: var(--text);
}

.review-result {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: #fff;
    padding: 6px 14px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 700;
}

/* ===== About ===== */
.about {
    padding: 100px 0;
}

.about-inner {
    text-align: center;
}

.about .section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.about-desc {
    font-size: 1.1rem;
    color: var(--text-sub);
    line-height: 1.9;
    margin-bottom: 36px;
}

.about-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* ===== Footer ===== */
.footer {
    background: var(--bg-dark);
    color: #9CA3AF;
    padding: 60px 0 32px;
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    margin-bottom: 48px;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: #fff;
}

.footer-desc {
    margin-top: 12px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col h4 {
    color: #fff;
    font-size: 0.9rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.footer-col a {
    font-size: 0.88rem;
    color: #9CA3AF;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid #1F2937;
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav, .header-cta {
        display: none;
    }

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

    .hero {
        padding: 100px 0 60px;
    }

    .hero-inner {
        flex-direction: column;
        gap: 40px;
        text-align: center;
    }

    .hero-headline {
        font-size: 2.5rem;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .hero-image {
        flex: none;
        width: 100%;
        max-width: 320px;
        height: 360px;
        margin: 0 auto;
    }

    .quick-grid {
        flex-direction: column;
        gap: 12px;
    }

    .quick-card {
        flex-direction: row;
        padding: 16px 20px;
    }

    .quick-icon {
        width: 44px;
        height: 44px;
        font-size: 1.4rem;
    }

    .product-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .review-card {
        width: 300px;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .about .section-title {
        font-size: 1.8rem;
    }

    .about-desc br {
        display: none;
    }

    .about-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-inner {
        flex-direction: column;
        gap: 40px;
    }

    .footer-links {
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .hero-headline {
        font-size: 2rem;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat strong {
        font-size: 1.4rem;
    }
}