:root {
    --bg-color: #f8f9fa;
    --text-color: #212529;
    --text-muted: #6c757d;
    --primary-color: #007bff;
    --primary-gradient: linear-gradient(135deg, #0056b3 0%, #007bff 100%);
    --card-bg: #ffffff;
    --border-color: #dee2e6;
    --glass-bg: rgba(255, 255, 255, 0.85);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans KR', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navbar (Glassmorphism Light) */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: transparent;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: var(--glass-bg);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 2px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color);
}

.primary-btn {
    background: var(--primary-gradient);
    color: #fff !important;
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(0, 123, 255, 0.2);
}

.primary-btn:hover {
    box-shadow: 0 6px 15px rgba(0, 123, 255, 0.4);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 5% 50px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(to bottom, #e9ecef 0%, #f8f9fa 100%);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 1rem;
    color: #111;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

/* Countdown */
.countdown-wrapper {
    margin-bottom: 3rem;
}

.countdown-label {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.time-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    border-radius: 15px;
    min-width: 85px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.time-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.time-box span {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.time-box p {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* Device Selectors */
.device-selectors {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2.5rem;
    flex-wrap: wrap;
}

.device-btn {
    background: var(--card-bg);
    color: #333;
    border: 1px solid var(--border-color);
    padding: 0.8rem 1.8rem;
    border-radius: 25px;
    font-size: 1.05rem;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 4px 10px rgba(0,0,0,0.03);
    transition: all 0.3s ease;
}

.device-btn:hover {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 8px 15px rgba(0, 123, 255, 0.2);
}

/* Buttons */
.cta-btn {
    display: inline-block;
    background: var(--primary-gradient);
    color: #fff;
    text-decoration: none;
    padding: 1.2rem 3rem;
    border-radius: 30px;
    font-size: 1.2rem;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(0, 123, 255, 0.3);
    transition: all 0.3s ease;
}

.cta-btn:hover {
    box-shadow: 0 15px 30px rgba(0, 123, 255, 0.5);
    transform: translateY(-3px);
    color: #fff;
}

.large-btn {
    padding: 1.4rem 4.5rem;
    font-size: 1.4rem;
}

.affiliate-notice {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

/* Adsense Containers */
.ad-container {
    width: 100%;
    max-width: 900px;
    margin: 1rem auto;
    text-align: center;
    /* 광고가 로드되지 않았을 때 빈 공간이 보이지 않도록 최소 높이와 배경 제거 */
    display: flex;
    justify-content: center;
    align-items: center;
}
.ad-container ins {
    width: 100%;
}

/* SEO Content Article */
.main-container {
    padding-top: 0px;
}
.content-article {
    max-width: 950px;
    margin: 0 auto;
    padding: 0 5%;
}
.text-section {
    padding: 70px 0;
    border-bottom: 1px solid var(--border-color);
}
.text-section:last-child {
    border-bottom: none;
}
.text-section h2 {
    font-size: 2.2rem;
    color: #111;
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}
.text-section h3 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}
.text-section p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}
.text-section strong {
    color: #333;
}
.text-section ul {
    list-style: none;
    margin-bottom: 1.5rem;
    padding-left: 0;
}
.text-section ul li {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 0.8rem;
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}
.text-section ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* Specs Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--card-bg);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.specs-table th, .specs-table td {
    padding: 1.2rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 1.05rem;
}

.specs-table th {
    background: #f1f3f5;
    width: 35%;
    font-weight: 700;
    color: #333;
}
.specs-table td {
    color: var(--text-muted);
}
.specs-table tr:last-child th,
.specs-table tr:last-child td {
    border-bottom: none;
}

/* FAQ */
.faq-section .faq-item {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 10px;
    margin-bottom: 1.2rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.faq-section .faq-item h3 {
    margin-top: 0;
    font-size: 1.2rem;
    color: #111;
}
.faq-section .faq-item p {
    margin-bottom: 0;
    font-size: 1.05rem;
}

/* Media & Badge Styles */
.unified-hero {
    min-height: 70vh;
    padding-bottom: 3rem;
}
.media-container {
    width: 100%;
    margin: 2rem 0;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
    background: #000;
}
.responsive-video, .responsive-img {
    width: 100%;
    height: auto;
    display: block;
}
.section-badge {
    display: inline-block;
    padding: 0.4rem 1.2rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    background: #e9ecef;
    color: #495057;
}
.ultra-badge {
    background: #ffe3e3;
    color: #e03131;
}
.flip-badge {
    background: #e3fafc;
    color: #0c8599;
}
.cta-wrap {
    text-align: center;
    margin: 4rem 0;
}

/* Footer */
footer {
    text-align: center;
    padding: 4rem 5%;
    background: #e9ecef;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
}
.disclaimer {
    font-size: 0.85rem;
    margin-top: 1rem;
}

/* Animations */
.fade-in {
    animation: fadeIn 1s ease forwards;
}
.fade-in-up {
    animation: fadeInUp 1s ease forwards 0.3s;
    opacity: 0;
}
.pulse-anim {
    animation: pulse 2s infinite;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(0, 123, 255, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(0, 123, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(0, 123, 255, 0); }
}

.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.7s ease-out;
}
.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        padding: 1rem;
        background: var(--glass-bg);
    }
    .nav-link {
        margin: 0.5rem;
        display: inline-block;
    }
    .countdown {
        gap: 0.8rem;
    }
    .time-box {
        min-width: 65px;
        padding: 0.8rem;
    }
    .time-box span {
        font-size: 1.8rem;
    }
    .specs-table th, .specs-table td {
        display: block;
        width: 100%;
    }
    .specs-table th {
        border-bottom: none;
        padding-bottom: 0.5rem;
    }
    .specs-table td {
        padding-top: 0;
    }
}