html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: 'Pretendard', sans-serif; background-color: #F8FAFC; color: #1E293B; overflow-x: hidden; }

/* Soft Glassmorphism */
.glass-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 10px 40px -10px rgba(37, 99, 235, 0.08);
    border-radius: 2rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.glass-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px -10px rgba(37, 99, 235, 0.15); background: rgba(255, 255, 255, 1); }

/* Micro-interactions */
.btn-press { transition: transform 0.1s cubic-bezier(0.4, 0, 0.2, 1); }
.btn-press:active { transform: scale(0.95); }

.nav-link { position: relative; font-weight: 700; color: #475569; transition: color 0.3s; }
.nav-link:hover { color: #2563EB; }
.nav-link::after { content: ''; position: absolute; width: 0; height: 3px; bottom: -6px; left: 50%; background-color: #2563EB; transition: all 0.3s ease; transform: translateX(-50%); border-radius: 2px; }
.nav-link:hover::after { width: 100%; }

/* Header Scroll State */
#header { transition: all 0.4s ease; background: transparent; padding-top: 1rem; padding-bottom: 1rem; }
#header.scrolled { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(12px); border-bottom: 1px solid rgba(0,0,0,0.05); padding-top: 0.5rem; padding-bottom: 0.5rem; box-shadow: 0 4px 20px rgba(0,0,0,0.04); }

/* Titles & Badges */
.sec-title { font-size: clamp(2.2rem, 4vw, 3rem); font-weight: 900; letter-spacing: -0.03em; color: #0F172A; margin-bottom: 1rem; line-height: 1.3; }
.sec-desc { font-size: clamp(1.1rem, 2vw, 1.25rem); color: #64748B; font-weight: 600; word-break: keep-all; }
.badge { display: inline-flex; align-items: center; justify-content: center; padding: 0.5rem 1.25rem; background: #EFF6FF; color: #2563EB; border-radius: 9999px; font-size: 0.875rem; font-weight: 800; letter-spacing: 0.05em; margin-bottom: 1rem; }

/* Reveal Animation */
.reveal { opacity: 0; transform: translateY(40px); transition: all 0.8s cubic-bezier(0.5, 0, 0, 1); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* Mobile Menu */
#mobile-menu { transform: translateX(100%); transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1); }
#mobile-menu.open { transform: translateX(0); }

/* FAQ Styles */
.faq-item { margin-bottom: 1.25rem; border-radius: 1.5rem; overflow: hidden; background: #fff; border: 1px solid #e2e8f0; box-shadow: 0 4px 15px -5px rgba(0,0,0,0.05); transition: all 0.3s ease; }
.faq-item:hover { border-color: #3B82F6; box-shadow: 0 10px 25px -5px rgba(37,99,235,0.15); }
.faq-question { width: 100%; text-align: left; padding: 1.5rem 2rem; font-weight: 800; color: #0F172A; display: flex; justify-content: space-between; align-items: center; cursor: pointer; background: transparent; font-size: 1.1rem; border:none; outline:none; }
.faq-item.active .faq-question { background: #EFF6FF; color: #2563EB; }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1); background: #fff; color: #475569; font-weight: 500; line-height: 1.8; font-size: 1.05rem; word-break: keep-all; }
.faq-item.active .faq-answer { max-height: 1200px; border-top: 1px solid #EFF6FF; }
.faq-answer-inner { padding: 2rem; }
.fq-icon { color: #2563EB; margin-right: 1rem; font-size: 1.5rem; flex-shrink: 0; }
.fq-arrow { transition: transform 0.3s ease; color: #94A3B8; flex-shrink: 0; margin-left: 1rem;}
.faq-item.active .fq-arrow { transform: rotate(180deg); color: #2563EB; }

.img-placeholder { background-color: #E2E8F0; display: flex; align-items: center; justify-content: center; color: #94A3B8; font-weight: 600; text-align: center; }
.pb-safe { padding-bottom: env(safe-area-inset-bottom); }
@keyframes shine { 100% { left: 200%; } }