/* 스타일 4: 볼드 & 스포티 */
:root {
    --primary-color: #E50914; /* Red */
    --secondary-color: #B20710;
    --bg-color: #141414;
    --surface-color: #222;
    --text-color: #ffffff;
    --text-muted-color: #b3b3b3;
    --border-color: #303030;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Noto Sans KR', sans-serif; background-color: var(--bg-color); color: var(--text-color); line-height: 1.6; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
a { text-decoration: none; color: var(--text-color); transition: color 0.3s ease; }
a:hover { color: var(--primary-color); }
h1, h2, h3 { font-weight: 900; text-transform: uppercase; }

/* 헤더 & 네비게이션 */
header { background-color: #000; border-bottom: 2px solid var(--primary-color); padding: 20px 0; position: sticky; top: 0; z-index: 1000; }
header .container { display: flex; justify-content: space-between; align-items: center; }
.logo h1 { font-size: 32px; font-style: italic; color: var(--primary-color); }
.logo h1 i { display: none; }
.logo .highlight { color: #fff; }
nav ul { list-style: none; display: flex; gap: 25px; }
nav a { font-weight: 700; font-size: 16px; }
nav a.nav-contact { color: #fff; background-color: transparent; border: 2px solid #fff; padding: 8px 15px; border-radius: 5px; transition: all 0.3s; }
nav a.nav-contact:hover { background-color: var(--primary-color); border-color: var(--primary-color); }

/* 히어로 섹션 */
.hero { text-align: center; padding: 80px 0 60px; background: #000; }
.hero h2 { font-size: 48px; margin-bottom: 15px; }
.hero h2 span { color: var(--primary-color); }
.hero p { font-size: 18px; color: var(--text-muted-color); max-width: 600px; margin: 0 auto; }

/* 사이트 그리드 */
#sites-grid { padding: 60px 0; }
.grid-container { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; }
.site-card { background-color: var(--surface-color); border-radius: 0; border: 1px solid var(--border-color); overflow: hidden; transition: transform 0.3s ease; display: flex; flex-direction: column; }
.site-card:hover { transform: scale(1.03); }
.site-card img { width: 100%; height: auto; display: block; }
.card-content { padding: 25px; display: flex; flex-direction: column; flex-grow: 1; }
.card-content h3 { font-size: 22px; margin-bottom: 10px; color: #fff; }
.card-content p { color: var(--text-muted-color); font-size: 15px; margin-bottom: 20px; flex-grow: 1; text-transform: none; }
.tags { margin-bottom: 20px; }
.tag { display: inline-block; padding: 6px 12px; border-radius: 0; font-size: 12px; font-weight: 700; margin-right: 8px; color: #000; }
.tag.guaranteed { background-color: #fff; }
.tag.new { background-color: #ddd; }
.tag.event { background-color: var(--primary-color); color: #fff; }
.btn-go { display: block; width: 100%; text-align: center; padding: 14px; background-color: var(--primary-color); color: #fff; font-weight: 700; border-radius: 0; transition: background-color 0.2s ease; text-transform: uppercase; }
.btn-go:hover { background-color: var(--secondary-color); color: #fff; }

/* 배너 문의 섹션 */
#banner-inquiry { background-color: #000; padding: 60px 0; text-align: center; }
#banner-inquiry h2 { font-size: 36px; margin-bottom: 15px; }
#banner-inquiry h2 i { color: var(--primary-color); margin-right: 10px; }
#banner-inquiry p { color: var(--text-muted-color); max-width: 600px; margin: 0 auto 30px; text-transform: none; }
.contact-info { margin-bottom: 30px; }
.contact-info p { font-size: 18px; margin-bottom: 10px; color: var(--text-color); text-transform: none; }
.contact-info i { margin-right: 10px; color: var(--primary-color); }
.btn-contact { display: inline-block; padding: 15px 40px; font-size: 18px; font-weight: 700; color: #fff; background-color: var(--primary-color); border-radius: 0; transition: transform 0.3s ease, background-color 0.3s; }
.btn-contact:hover { transform: scale(1.05); background-color: #fff; color: #000; }

/* 푸터 */
footer { padding: 40px 0; text-align: center; background-color: #000; }
footer p { font-size: 14px; color: #666; margin-bottom: 5px; }

/* 반응형 */
@media (max-width: 768px) {
    header .container { flex-direction: column; gap: 20px; }
    nav ul { gap: 15px; justify-content: center; flex-wrap: wrap; }
    .hero h2 { font-size: 32px; }
    .hero p { font-size: 16px; }
    .grid-container { grid-template-columns: 1fr; }
}