:root {
    --primary: #0d9488;
    --primary-hover: #0f766e;
    --secondary: #b45309;
    --secondary-hover: #92400e;
    --bg-main: #fcfcfd;
    --bg-card: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --font-family: 'Noto Sans KR', sans-serif;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.7;
    font-size: 17px;
}

/* Accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 15px;
    z-index: 9999;
    transition: var(--transition);
    font-weight: bold;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
}

*:focus-visible {
    outline: 3px solid var(--secondary);
    outline-offset: 2px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Header & Navigation */
header {
    background-color: var(--bg-card);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 700;
    font-size: 22px;
}

.logo-img {
    width: 36px;
    height: 36px;
    margin-right: 10px;
}

.burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.burger .line {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-main);
    margin: 5px 0;
    transition: var(--transition);
}

.nav-links {
    display: flex;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    font-size: 16px;
    transition: var(--transition);
}

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

/* Hero Section */
.hero {
    padding: 80px 20px;
    background: linear-gradient(135deg, #f0fdfa 0%, #fffbeb 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(13,148,136,0.08) 0%, rgba(255,255,255,0) 70%);
    top: -50px;
    right: -50px;
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}

.hero-text h1 {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero-text p {
    font-size: 19px;
    color: var(--text-muted);
    margin-bottom: 30px;
}

.hero-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    display: inline-block;
    padding: 14px 28px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 6px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

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

.btn-secondary {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-secondary:hover {
    background-color: var(--primary);
    color: white;
}

.hero-img img {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

/* Statistics */
.stats {
    background-color: var(--bg-card);
    padding: 50px 20px;
    border-bottom: 1px solid var(--border);
}

.stats-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 30px;
}

.stat-item {
    text-align: center;
}

.stat-num {
    font-size: 38px;
    font-weight: 700;
    color: var(--primary);
    display: block;
}

.stat-label {
    font-size: 15px;
    color: var(--text-muted);
}

/* How It Works */
.how-it-works {
    padding: 80px 20px;
}

.section-title {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 50px;
    color: var(--text-main);
}

.steps-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.step-card {
    background-color: var(--bg-card);
    padding: 35px 25px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
    border-top: 4px solid var(--primary);
}

.step-icon {
    font-size: 32px;
    color: var(--secondary);
    margin-bottom: 15px;
}

/* Principles / Trust block */
.principles {
    background-color: #f8fafc;
    padding: 80px 20px;
}

.principles-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.principles-text h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 20px;
}

.principles-list {
    list-style: none;
}

.principles-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
}

.principles-list li i {
    color: var(--primary);
    margin-right: 12px;
    margin-top: 5px;
}

/* Services */
.services-section {
    padding: 80px 20px;
}

.services-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
}

.service-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.service-content {
    padding: 25px;
}

.service-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.service-content p {
    color: var(--text-muted);
    font-size: 15px;
    margin-bottom: 15px;
}

/* Pricing */
.pricing {
    padding: 80px 20px;
    background-color: #f8fafc;
}

.pricing-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    align-items: stretch;
}

.price-card {
    background-color: var(--bg-card);
    border-radius: 8px;
    padding: 40px 30px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
}

.price-card.popular {
    border: 3px solid var(--primary);
    transform: scale(1.03);
}

.popular-badge {
    position: absolute;
    top: -15px;
    right: 20px;
    background-color: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 13px;
    font-weight: 700;
}

.price-tier {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 15px;
}

.price-val {
    font-size: 36px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 25px;
}

.price-features {
    list-style: none;
    margin-bottom: 30px;
}

.price-features li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
}

.price-features li i {
    color: var(--primary);
    margin-right: 10px;
}

/* Form Section */
.form-section {
    padding: 80px 20px;
}

.form-container {
    max-width: 650px;
    margin: 0 auto;
    background-color: var(--bg-card);
    padding: 45px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    font-size: 16px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background-color: #fafafa;
    font-family: inherit;
    transition: var(--transition);
}

.form-control:focus {
    border-color: var(--primary);
    background-color: white;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
}

.checkbox-group input {
    margin-top: 4px;
}

/* Trust Layer & Footer */
.trust-layer {
    background-color: #0f172a;
    color: #f8fafc;
    padding: 40px 20px;
    border-bottom: 1px solid #1e293b;
}

.trust-container {
    max-width: 1200px;
    margin: 0 auto;
    font-size: 14px;
    line-height: 1.8;
}

.trust-container h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: #f1f5f9;
}

footer {
    background-color: #0f172a;
    color: #cbd5e1;
    padding: 40px 20px;
    text-align: center;
    font-size: 14px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-links {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.legal-text {
    line-height: 1.8;
}

/* FAQ Accordion */
.faq-section {
    padding: 80px 20px;
}

.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    margin-bottom: 15px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    text-align: left;
    padding: 20px;
    background: none;
    border: none;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
    color: var(--text-main);
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-answer p {
    padding-bottom: 20px;
    color: var(--text-muted);
}

.faq-question i {
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: #0f172a;
    color: white;
    padding: 20px;
    z-index: 9999;
    border-top: 3px solid var(--primary);
    display: none;
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.cookie-buttons {
    display: flex;
    gap: 10px;
}

.btn-cookie {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    border-radius: 4px;
    border: none;
}

.btn-cookie-accept {
    background-color: var(--primary);
    color: white;
}

.btn-cookie-decline {
    background-color: #334155;
    color: #e2e8f0;
}

/* Responsive Grid & Burger Menu */
@media (max-width: 768px) {
    .burger {
        display: block;
    }
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--bg-card);
        padding: 20px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
    }
    .nav-links.active {
        display: flex;
    }
    .hero-container {
        grid-template-columns: 1fr;
    }
    .principles-container {
        grid-template-columns: 1fr;
    }
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    .burger.active .line:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    .burger.active .line:nth-child(2) {
        opacity: 0;
    }
    .burger.active .line:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}