:root {
    --primary-bg: #0b1120;
    --secondary-bg: #1e293b;
    --accent-red: #ff2a5f;
    --accent-blue: #0070f3;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

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

h1, h2, h3, h4, .logo {
    font-family: 'Outfit', sans-serif;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    background: rgba(11, 17, 32, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-red));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    cursor: pointer;
}

.logo span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-muted);
    -webkit-text-fill-color: var(--text-muted);
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    margin: 0 1.5rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-main);
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-blue) 0%, #00c6ff 100%);
    color: white;
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 112, 243, 0.3);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid var(--glass-border);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    backdrop-filter: blur(4px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding: 0 5%;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 30%, rgba(0, 112, 243, 0.15) 0%, transparent 50%),
                      radial-gradient(circle at 80% 70%, rgba(255, 42, 95, 0.15) 0%, transparent 50%);
    z-index: -1;
}

.hero-content {
    max-width: 800px;
    z-index: 1;
    animation: fadeIn 1s ease-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero-title {
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero-title span {
    background: linear-gradient(90deg, #00c6ff, var(--accent-blue), var(--accent-red));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-large i {
    margin-right: 8px;
}

/* Sections General */
.section {
    padding: 8rem 5%;
}

.dark-section {
    background-color: rgba(0,0,0,0.2);
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem;
    transition: transform 0.3s ease, background 0.3s ease;
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.card-icon {
    font-size: 2.5rem;
    color: var(--accent-blue);
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.card-link {
    color: #00c6ff;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card-link:hover i {
    transform: translateX(5px);
}

.card-link i {
    transition: transform 0.3s ease;
}

/* Timeline */
.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 20px;
    height: 100%;
    width: 2px;
    background: linear-gradient(to bottom, var(--accent-blue), var(--accent-red));
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 3rem;
}

.timeline-dot {
    position: absolute;
    left: 12px;
    top: 5px;
    width: 18px;
    height: 18px;
    background: var(--primary-bg);
    border: 4px solid var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-blue);
}

.timeline-content {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 15px;
    padding: 1.5rem;
}

.timeline-content h3 {
    color: #00c6ff;
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: var(--text-muted);
}

/* App Grid */
.app-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.app-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    transition: transform 0.3s ease;
}

.app-card:hover {
    transform: translateY(-10px);
}

.app-logo {
    width: 70px;
    height: 70px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-weight: 800;
    font-size: 1.2rem;
    color: #333;
}

.kakao { background: #fae100; }
.naver { background: #03c75a; color: white; }
.coupang { background: #cb1400; color: white; }
.yogiyo { background: #fa0050; color: white; }

.app-card h3 {
    margin-bottom: 0.5rem;
}

.app-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* QnA Section */
.verified-icon {
    color: #03c75a;
    margin-right: 10px;
}

.qna-container {
    max-width: 900px;
    margin: 0 auto;
}

.qna-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.cat-btn {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text-muted);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Inter', sans-serif;
    font-weight: 500;
}

.cat-btn:hover, .cat-btn.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-main);
    border-color: var(--accent-blue);
}

.qna-search {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.qna-search input {
    flex: 1;
    padding: 1rem 1.5rem;
    border-radius: 50px;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-main);
    font-size: 1.1rem;
    font-family: 'Inter', sans-serif;
    outline: none;
    transition: border-color 0.3s;
}

.qna-search input:focus {
    border-color: var(--accent-blue);
}

.qna-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
}

.qna-item {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    transition: transform 0.3s, border-color 0.3s;
}

.qna-item:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.qna-question {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--glass-border);
}

.q-badge {
    background: linear-gradient(135deg, var(--accent-red), #ff4757);
    color: white;
    font-weight: 800;
    width: 35px;
    height: 35px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.qna-question h4 {
    font-size: 1.3rem;
    line-height: 1.4;
    padding-top: 4px;
}

.qna-answer {
    padding-left: 3rem;
}

.expert-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.expert-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    border: 2px solid var(--accent-blue);
}

.expert-name {
    display: block;
    font-weight: 600;
    color: var(--text-main);
}

.expert-title {
    display: block;
    font-size: 0.85rem;
    color: #00c6ff;
    margin-top: 2px;
}

.expert-title i {
    margin-right: 4px;
}

.qna-answer p {
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.read-more {
    color: var(--accent-blue);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
}

.read-more:hover {
    text-decoration: underline;
}

.qna-action {
    text-align: center;
}

/* Emergency */
.emergency-section {
    padding-top: 4rem;
}

.glass-panel {
    background: linear-gradient(135deg, rgba(232, 17, 35, 0.1), rgba(232, 17, 35, 0.05));
    border: 1px solid rgba(232, 17, 35, 0.2);
    border-radius: 30px;
    padding: 4rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.glass-panel h2 {
    color: #ff4757;
    margin-bottom: 3rem;
}

.emergency-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.emergency-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.emergency-number {
    font-size: 3rem;
    font-weight: 800;
    color: white;
    font-family: 'Outfit', sans-serif;
    text-shadow: 0 0 20px rgba(232, 17, 35, 0.5);
    margin-bottom: 0.5rem;
}

.emergency-desc {
    color: var(--text-muted);
}

/* Footer */
footer {
    background: #060913;
    padding: 4rem 5% 2rem;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.footer-brand span {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-brand p {
    color: var(--text-muted);
}

.footer-links h4, .footer-social h4 {
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--accent-blue);
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    text-decoration: none;
    transition: all 0.3s;
}

.social-icons a:hover {
    background: var(--accent-blue);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    padding-top: 2rem;
    border-top: 1px solid var(--glass-border);
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title { font-size: 3rem; }
    .nav-links { display: none; }
    .hero-buttons { flex-direction: column; }
    .glass-panel { padding: 2rem; }
}