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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.45;
    color: #333;
    background-color: #f5f5f5;
}

.navbar {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c3e50;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c3e50;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 0.5rem 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #3498db;
    border-bottom: 2px solid #3498db;
}

.hamburger-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger-btn span {
    display: block;
    width: 22px;
    height: 2px;
    background: #2c3e50;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.hamburger-btn.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger-btn.open span:nth-child(2) {
    opacity: 0;
}

.hamburger-btn.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5rem 2rem;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.eyebrow {
    display: inline-block;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.85rem;
    font-weight: 600;
    opacity: 0.9;
    margin-bottom: 1rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.15;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 1.25rem;
    opacity: 0.95;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.btn-hero {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: white;
    color: #667eea;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-hero:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.btn-hero-ghost {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.7);
}

.lang-ko {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.85rem;
    color: #555;
    line-height: 1.45;
}

.hero .lang-ko {
    margin-top: 0.6rem;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}

.approaches {
    padding: 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.approaches::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url("https://images.unsplash.com/photo-1677442136019-21780ecad995?q=80&w=2070&auto=format&fit=crop");
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    opacity: 0.15;
    z-index: 0;
}

.approaches-content {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.95);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.approaches-description {
    max-width: 900px;
    margin: 0 auto 3rem;
    text-align: center;
}

.approaches-description p {
    font-size: 1.2rem;
    line-height: 1.6;
    color: #444;
    margin-bottom: 1.5rem;
}

.approaches-description p:last-child {
    margin-bottom: 0;
}

.approaches-list {
    max-width: 800px;
    margin: 2rem auto 0;
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid #667eea;
}

.approaches-list h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    text-align: center;
}

.approaches-list ul {
    list-style: none;
    padding: 0;
}

.approaches-list li {
    padding: 1rem 1.5rem 1rem 3rem;
    margin-bottom: 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    font-size: 1.1rem;
    line-height: 1.5;
    color: #444;
    position: relative;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.approaches-list li:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.approaches-list li::before {
    content: "→";
    position: absolute;
    left: 1rem;
    color: #667eea;
    font-weight: bold;
    font-size: 1.5rem;
}

.solutions {
    background-color: #f8f9fa;
    padding: 4rem 2rem;
}

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

.section-lead {
    text-align: center;
    max-width: 720px;
    margin: -1.5rem auto 0;
    color: #555;
    font-size: 1.15rem;
}

.section-lead .lang-ko {
    margin-top: 0.5rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2.5rem;
}

.solution-card {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.solution-card:hover {
    transform: translateY(-3px);
}

.card-kicker {
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #667eea;
}

.solution-card h3 {
    color: #3498db;
    margin-bottom: 0.25rem;
}

.solution-card p {
    color: #444;
    line-height: 1.55;
}

.solution-card a {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    margin-top: auto;
}

.solution-card a:hover {
    text-decoration: underline;
}

.solution-card-soon {
    border: 1px dashed rgba(102, 126, 234, 0.45);
    background: linear-gradient(180deg, #fff 0%, #f4f6ff 100%);
}

.soon-label {
    display: inline-block;
    margin-top: auto;
    font-weight: 600;
    color: #667eea;
}

.contact {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.contact-content {
    max-width: 720px;
    margin: 0 auto;
}

.contact .section-title {
    color: white;
    margin-bottom: 1.25rem;
}

.contact p {
    font-size: 1.15rem;
    opacity: 0.95;
    margin-bottom: 0.75rem;
}

.contact .lang-ko {
    color: rgba(255, 255, 255, 0.92);
    margin-bottom: 1.75rem;
}

.contact .btn-hero {
    margin-top: 0.5rem;
}

.footer {
    background-color: #2c3e50;
    color: white;
    padding: 3rem 2rem 1rem;
    text-align: center;
}

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

.footer p {
    margin-bottom: 1rem;
    opacity: 0.9;
}

.footer a {
    color: #9ec9f0;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

@media (max-width: 768px) {
    .hamburger-btn {
        display: flex;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        gap: 1rem;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        padding: 1rem 2rem 1.5rem;
        box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
    }

    .nav-menu.open {
        display: flex;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .approaches-content {
        padding: 2rem 1.5rem;
    }

    .approaches-description p {
        font-size: 1rem;
    }

    .approaches-list li {
        padding-left: 2.5rem;
        font-size: 1rem;
    }

    .solutions-grid {
        grid-template-columns: 1fr;
    }
}