/* 미소미 구강케어 축제 기획안 - 스타일시트 */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #10b981;
    --accent-color: #f59e0b;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #f9fafb;
    --white: #ffffff;
    --border-color: #e5e7eb;
    --gradient-start: #667eea;
    --gradient-end: #764ba2;
}

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

body {
    font-family: 'Pretendard', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    font-size: 14px;
}

/* 네비게이션 */
.navbar {
    background:
        linear-gradient(135deg, #1e3a5f, #2d5a87, #1e3a5f),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    padding: 0.5rem 1rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
    border-bottom: 2px solid rgba(255,255,255,0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--white);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-menu a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    padding: 0.4rem 0.7rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 0.8rem;
}

.nav-menu a:hover,
.nav-menu a.active {
    background: rgba(255,255,255,0.2);
    color: var(--white);
}

/* 히어로 섹션 */
.hero {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 5rem 1rem 2.5rem;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='50' cy='50' r='40' fill='none' stroke='%23ffffff' stroke-opacity='0.1' stroke-width='1'/%3E%3Ccircle cx='50' cy='50' r='30' fill='none' stroke='%23ffffff' stroke-opacity='0.08' stroke-width='1'/%3E%3Ccircle cx='50' cy='50' r='20' fill='none' stroke='%23ffffff' stroke-opacity='0.06' stroke-width='1'/%3E%3C/svg%3E"),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    animation: float 20s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-10px) rotate(1deg); }
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.8rem;
    line-height: 1.3;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.hero .subtitle {
    font-size: 0.95rem;
    opacity: 0.95;
    margin-bottom: 1rem;
    font-weight: 400;
}

.hero-badge {
    display: inline-block;
    background: rgba(255,255,255,0.2);
    padding: 0.3rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    margin-bottom: 1rem;
    backdrop-filter: blur(10px);
}

/* 메인 컨텐츠 */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 0.8rem;
    position: relative;
}

/* 배경 장식 */
body {
    background:
        var(--bg-color),
        url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='50' cy='50' r='1' fill='%23667eea' fill-opacity='0.03'/%3E%3C/svg%3E");
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 10% 20%, rgba(102, 126, 234, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 90% 80%, rgba(118, 75, 162, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.02) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* 섹션 */
.section {
    background: var(--white);
    border-radius: 12px;
    padding: 1.2rem;
    margin-bottom: 1rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

/* 섹션 배경 패턴 */
.section::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 200px;
    height: 200px;
    opacity: 0.5;
    pointer-events: none;
    z-index: 0;
}

.section > * {
    position: relative;
    z-index: 1;
}

/* 섹션 교차 배경색 - 가독성 향상 */
.section:nth-child(even) {
    background:
        linear-gradient(135deg, #f8fafc, #f1f5f9),
        url("data:image/svg+xml,%3Csvg width='52' height='26' viewBox='0 0 52 26' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.03'%3E%3Cpath d='M10 10c0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6h2c0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6 0 2.21 1.79 4 4 4 3.314 0 6 2.686 6 6 0 2.21 1.79 4 4 4v2c-3.314 0-6-2.686-6-6 0-2.21-1.79-4-4-4-3.314 0-6-2.686-6-6zm25.464-1.95l8.486 8.486-1.414 1.414-8.486-8.486 1.414-1.414z' /%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.section:nth-child(even)::before {
    background: url("data:image/svg+xml,%3Csvg width='120' height='120' viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M60 10 L110 60 L60 110 L10 60 Z' fill='none' stroke='%23667eea' stroke-opacity='0.08' stroke-width='2'/%3E%3Cpath d='M60 30 L90 60 L60 90 L30 60 Z' fill='none' stroke='%23764ba2' stroke-opacity='0.06' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat;
}

.section:nth-child(odd) {
    background:
        var(--white),
        url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%239C92AC' fill-opacity='0.02' fill-rule='evenodd'%3E%3Cpath d='M0 40L40 0H20L0 20M40 40V20L20 40'/%3E%3C/g%3E%3C/svg%3E");
}

.section:nth-child(odd)::before {
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='80' cy='20' r='30' fill='none' stroke='%2310b981' stroke-opacity='0.08' stroke-width='2'/%3E%3Ccircle cx='80' cy='20' r='20' fill='none' stroke='%2310b981' stroke-opacity='0.05' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat;
}

/* 특별 강조 섹션 */
.section:nth-child(3n) {
    background:
        linear-gradient(135deg, #fefce8, #fef9c3),
        url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' stroke='%23f59e0b' stroke-opacity='0.08'%3E%3Cpath d='M0 0h40v40H0zm40 40h40v40H40z'/%3E%3C/g%3E%3C/svg%3E");
    border-color: #fde047;
}

.section:nth-child(3n)::before {
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cpolygon points='50,10 90,35 90,75 50,100 10,75 10,35' fill='none' stroke='%23f59e0b' stroke-opacity='0.1' stroke-width='2'/%3E%3C/svg%3E") no-repeat;
}

.section:nth-child(4n) {
    background:
        linear-gradient(135deg, #f0fdf4, #dcfce7),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 5 Q45 20 30 35 Q15 20 30 5' fill='none' stroke='%2310b981' stroke-opacity='0.06' stroke-width='1'/%3E%3Cpath d='M30 25 Q45 40 30 55 Q15 40 30 25' fill='none' stroke='%2310b981' stroke-opacity='0.04' stroke-width='1'/%3E%3C/svg%3E");
    border-color: #86efac;
}

.section:nth-child(4n)::before {
    background: url("data:image/svg+xml,%3Csvg width='120' height='120' viewBox='0 0 120 120' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='60' cy='60' r='50' fill='none' stroke='%2310b981' stroke-opacity='0.1' stroke-width='2' stroke-dasharray='10,5'/%3E%3Ccircle cx='60' cy='60' r='35' fill='none' stroke='%2322c55e' stroke-opacity='0.08' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat;
}

.section:nth-child(5n) {
    background:
        linear-gradient(135deg, #eff6ff, #dbeafe),
        url("data:image/svg+xml,%3Csvg width='100' height='20' viewBox='0 0 100 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M21.184 20c.357-.13.72-.264 1.088-.402l1.768-.661C33.64 15.347 39.647 14 50 14c10.271 0 15.362 1.222 24.629 4.928.955.383 1.869.74 2.75 1.072h6.225c-2.51-.73-5.139-1.691-8.233-2.928C65.888 13.278 60.562 12 50 12c-10.626 0-16.855 1.397-26.66 5.063l-1.767.662c-2.475.923-4.66 1.674-6.724 2.275h6.335zm0-20C13.258 2.892 8.077 4 0 4V2c5.744 0 9.951-.574 14.85-2h6.334zM77.38 0C85.239 2.966 90.502 4 100 4V2c-6.842 0-11.386-.542-16.396-2h-6.225zM0 14c8.44 0 13.718-1.21 22.272-4.402l1.768-.661C33.64 5.347 39.647 4 50 4c10.271 0 15.362 1.222 24.629 4.928C84.112 12.722 89.438 14 100 14v-2c-10.271 0-15.362-1.222-24.629-4.928C65.888 3.278 60.562 2 50 2 39.374 2 33.145 3.397 23.34 7.063l-1.767.662C13.223 10.84 8.163 12 0 12v2z' fill='%232563eb' fill-opacity='0.03' fill-rule='evenodd'/%3E%3C/svg%3E");
    border-color: #93c5fd;
}

.section:nth-child(5n)::before {
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='10' y='10' width='80' height='80' rx='15' fill='none' stroke='%232563eb' stroke-opacity='0.1' stroke-width='2'/%3E%3Crect x='25' y='25' width='50' height='50' rx='10' fill='none' stroke='%233b82f6' stroke-opacity='0.08' stroke-width='1.5'/%3E%3C/svg%3E") no-repeat;
}

.section-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.section-subtitle {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* 카드 그리드 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.card {
    background: var(--white);
    border-radius: 16px;
    padding: 1.2rem;
    border: none;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
    box-shadow:
        0 4px 6px -1px rgba(0, 0, 0, 0.1),
        0 2px 4px -1px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end), var(--accent-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.8) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.card:nth-child(6n+1) {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 50%, #fde68a 100%);
    border-left: 4px solid #f59e0b;
    box-shadow:
        0 10px 25px -5px rgba(245, 158, 11, 0.2),
        0 4px 6px -2px rgba(245, 158, 11, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.card:nth-child(6n+1)::before {
    background: linear-gradient(90deg, #f59e0b, #fbbf24, #f59e0b);
}

.card:nth-child(6n+2) {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 50%, #a7f3d0 100%);
    border-left: 4px solid #10b981;
    box-shadow:
        0 10px 25px -5px rgba(16, 185, 129, 0.2),
        0 4px 6px -2px rgba(16, 185, 129, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.card:nth-child(6n+2)::before {
    background: linear-gradient(90deg, #10b981, #34d399, #10b981);
}

.card:nth-child(6n+3) {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #bfdbfe 100%);
    border-left: 4px solid #3b82f6;
    box-shadow:
        0 10px 25px -5px rgba(59, 130, 246, 0.2),
        0 4px 6px -2px rgba(59, 130, 246, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.card:nth-child(6n+3)::before {
    background: linear-gradient(90deg, #3b82f6, #60a5fa, #3b82f6);
}

.card:nth-child(6n+4) {
    background: linear-gradient(135deg, #fdf4ff 0%, #fae8ff 50%, #f5d0fe 100%);
    border-left: 4px solid #a855f7;
    box-shadow:
        0 10px 25px -5px rgba(168, 85, 247, 0.2),
        0 4px 6px -2px rgba(168, 85, 247, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.card:nth-child(6n+4)::before {
    background: linear-gradient(90deg, #a855f7, #c084fc, #a855f7);
}

.card:nth-child(6n+5) {
    background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 50%, #fed7aa 100%);
    border-left: 4px solid #f97316;
    box-shadow:
        0 10px 25px -5px rgba(249, 115, 22, 0.2),
        0 4px 6px -2px rgba(249, 115, 22, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.card:nth-child(6n+5)::before {
    background: linear-gradient(90deg, #f97316, #fb923c, #f97316);
}

.card:nth-child(6n+6) {
    background: linear-gradient(135deg, #ecfeff 0%, #cffafe 50%, #a5f3fc 100%);
    border-left: 4px solid #06b6d4;
    box-shadow:
        0 10px 25px -5px rgba(6, 182, 212, 0.2),
        0 4px 6px -2px rgba(6, 182, 212, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.card:nth-child(6n+6)::before {
    background: linear-gradient(90deg, #06b6d4, #22d3ee, #06b6d4);
}

.card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow:
        0 25px 50px -12px rgba(0,0,0,0.25),
        0 0 0 1px rgba(255,255,255,0.1);
}

.card:hover::before {
    opacity: 1;
}

.card:hover::after {
    opacity: 0.5;
}

.card-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.4rem;
    box-shadow:
        0 4px 15px rgba(102, 126, 234, 0.4),
        inset 0 1px 0 rgba(255,255,255,0.3);
    transition: all 0.3s ease;
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow:
        0 8px 25px rgba(102, 126, 234, 0.5),
        inset 0 1px 0 rgba(255,255,255,0.3);
}

.card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-color);
    transition: color 0.3s ease;
}

.card:hover h3 {
    color: var(--primary-color);
}

.card p {
    color: var(--text-light);
    font-size: 0.8rem;
    line-height: 1.5;
}

/* 하이라이트 박스 */
.highlight-box {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #bfdbfe 100%);
    border: none;
    border-left: 5px solid transparent;
    border-image: linear-gradient(180deg, #3b82f6, #1d4ed8) 1;
    padding: 1.2rem 1.5rem;
    border-radius: 0 16px 16px 0;
    margin: 1.2rem 0;
    position: relative;
    overflow: hidden;
    box-shadow:
        0 10px 25px -5px rgba(59, 130, 246, 0.15),
        0 4px 6px -2px rgba(59, 130, 246, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
    transition: all 0.3s ease;
}

.highlight-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.highlight-box::after {
    content: '💡';
    position: absolute;
    top: -10px;
    right: 15px;
    font-size: 2rem;
    opacity: 0.3;
}

.highlight-box:hover {
    transform: translateX(5px);
    box-shadow:
        0 15px 35px -5px rgba(59, 130, 246, 0.2),
        0 6px 10px -2px rgba(59, 130, 246, 0.15);
}

.highlight-box.warning {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 50%, #fde68a 100%);
    border-image: linear-gradient(180deg, #f59e0b, #d97706) 1;
    box-shadow:
        0 10px 25px -5px rgba(245, 158, 11, 0.15),
        0 4px 6px -2px rgba(245, 158, 11, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.highlight-box.warning::before {
    background: radial-gradient(circle at top right, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
}

.highlight-box.warning::after {
    content: '⚠️';
}

.highlight-box.warning:hover {
    box-shadow:
        0 15px 35px -5px rgba(245, 158, 11, 0.2),
        0 6px 10px -2px rgba(245, 158, 11, 0.15);
}

.highlight-box.success {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 50%, #a7f3d0 100%);
    border-image: linear-gradient(180deg, #10b981, #059669) 1;
    box-shadow:
        0 10px 25px -5px rgba(16, 185, 129, 0.15),
        0 4px 6px -2px rgba(16, 185, 129, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.highlight-box.success::before {
    background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
}

.highlight-box.success::after {
    content: '✅';
}

.highlight-box.success:hover {
    box-shadow:
        0 15px 35px -5px rgba(16, 185, 129, 0.2),
        0 6px 10px -2px rgba(16, 185, 129, 0.15);
}

.highlight-box h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
    color: var(--text-color);
}

.highlight-box p {
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
    line-height: 1.6;
}

/* 테이블 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.8rem 0;
    font-size: 0.8rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

.data-table th,
.data-table td {
    padding: 0.6rem 0.8rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    background:
        linear-gradient(135deg, var(--gradient-start), var(--gradient-end)),
        url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 20 L20 0 L40 20 L20 40 Z' fill='none' stroke='%23ffffff' stroke-opacity='0.1' stroke-width='1'/%3E%3C/svg%3E");
    color: var(--white);
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.data-table tr:nth-child(even) {
    background:
        linear-gradient(90deg, #f8fafc, #ffffff),
        url("data:image/svg+xml,%3Csvg width='20' height='20' viewBox='0 0 20 20' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='10' cy='10' r='1' fill='%23667eea' fill-opacity='0.03'/%3E%3C/svg%3E");
}

.data-table tr:nth-child(odd) {
    background-color: #ffffff;
}

.data-table tr:hover {
    background: linear-gradient(90deg, #e0f2fe, #dbeafe);
    transform: scale(1.01);
    transition: all 0.2s ease;
}

/* 리스트 */
.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    padding: 0.4rem 0;
    padding-left: 1.2rem;
    position: relative;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.feature-list li:last-child {
    border-bottom: none;
}

.feature-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary-color);
    font-weight: bold;
    font-size: 0.8rem;
}

/* 시나리오 카드 */
.scenario-card {
    background: var(--white);
    border-radius: 20px;
    padding: 1.5rem;
    margin-bottom: 1.2rem;
    border: none;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    border-radius: 20px 0 0 20px;
}

.scenario-card::after {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 150px;
    height: 150px;
    opacity: 0.4;
    pointer-events: none;
    transition: all 0.3s ease;
}

.scenario-card:hover {
    transform: translateY(-8px) scale(1.01);
}

.scenario-card:hover::after {
    transform: scale(1.2) rotate(10deg);
    opacity: 0.6;
}

.scenario-card.a {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 50%, #a7f3d0 100%);
    box-shadow:
        0 15px 35px -5px rgba(16, 185, 129, 0.2),
        0 5px 15px rgba(16, 185, 129, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}
.scenario-card.a::before {
    background: linear-gradient(180deg, #10b981, #059669, #047857);
}
.scenario-card.a::after {
    background: radial-gradient(circle, rgba(16, 185, 129, 0.3) 0%, transparent 70%);
}
.scenario-card.a:hover {
    box-shadow:
        0 25px 50px -5px rgba(16, 185, 129, 0.3),
        0 10px 25px rgba(16, 185, 129, 0.15);
}

.scenario-card.b {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 50%, #bfdbfe 100%);
    box-shadow:
        0 15px 35px -5px rgba(59, 130, 246, 0.2),
        0 5px 15px rgba(59, 130, 246, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}
.scenario-card.b::before {
    background: linear-gradient(180deg, #3b82f6, #2563eb, #1d4ed8);
}
.scenario-card.b::after {
    background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
}
.scenario-card.b:hover {
    box-shadow:
        0 25px 50px -5px rgba(59, 130, 246, 0.3),
        0 10px 25px rgba(59, 130, 246, 0.15);
}

.scenario-card.c {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 50%, #fde68a 100%);
    box-shadow:
        0 15px 35px -5px rgba(245, 158, 11, 0.2),
        0 5px 15px rgba(245, 158, 11, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}
.scenario-card.c::before {
    background: linear-gradient(180deg, #f59e0b, #d97706, #b45309);
}
.scenario-card.c::after {
    background: radial-gradient(circle, rgba(245, 158, 11, 0.3) 0%, transparent 70%);
}
.scenario-card.c:hover {
    box-shadow:
        0 25px 50px -5px rgba(245, 158, 11, 0.3),
        0 10px 25px rgba(245, 158, 11, 0.15);
}

.scenario-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.scenario-card.a .scenario-badge {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}
.scenario-card.b .scenario-badge {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
}
.scenario-card.c .scenario-badge {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

/* 이해관계자 카드 */
.stakeholder-card {
    background: var(--white);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 0.8rem;
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.stakeholder-card::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 150px;
    opacity: 0.4;
    pointer-events: none;
}

.stakeholder-card:nth-child(odd) {
    background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 50%, #fed7aa 100%);
    border-left: 5px solid #f97316;
    box-shadow:
        0 10px 25px -5px rgba(249, 115, 22, 0.15),
        0 4px 6px -2px rgba(249, 115, 22, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.stakeholder-card:nth-child(odd)::before {
    background: radial-gradient(circle at top right, rgba(249, 115, 22, 0.1) 0%, transparent 60%);
}

.stakeholder-card:nth-child(even) {
    background: linear-gradient(135deg, #faf5ff 0%, #f3e8ff 50%, #e9d5ff 100%);
    border-left: 5px solid #a855f7;
    box-shadow:
        0 10px 25px -5px rgba(168, 85, 247, 0.15),
        0 4px 6px -2px rgba(168, 85, 247, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.stakeholder-card:nth-child(even)::before {
    background: radial-gradient(circle at top right, rgba(168, 85, 247, 0.1) 0%, transparent 60%);
}

.stakeholder-header {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1rem;
}

.stakeholder-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.3rem;
    box-shadow:
        0 4px 15px rgba(102, 126, 234, 0.4),
        inset 0 1px 0 rgba(255,255,255,0.3);
}

.stakeholder-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-color);
}

.problem-needs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.8rem;
    margin-top: 0.8rem;
}

.problem-box, .needs-box, .strategy-box {
    padding: 1rem;
    border-radius: 12px;
    font-size: 0.8rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.problem-box::before, .needs-box::before, .strategy-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
}

.problem-box {
    background: linear-gradient(135deg, #fef2f2, #fee2e2);
    border: none;
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.1);
}

.problem-box::before {
    background: linear-gradient(180deg, #ef4444, #dc2626);
}

.problem-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(239, 68, 68, 0.2);
}

.needs-box {
    background: linear-gradient(135deg, #f0fdf4, #dcfce7);
    border: none;
    box-shadow: 0 4px 15px rgba(34, 197, 94, 0.1);
}

.needs-box::before {
    background: linear-gradient(180deg, #22c55e, #16a34a);
}

.needs-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(34, 197, 94, 0.2);
}

.strategy-box {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border: none;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.1);
}

.strategy-box::before {
    background: linear-gradient(180deg, #3b82f6, #2563eb);
}

.strategy-box:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.2);
}

.box-title {
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.box-title::before {
    font-size: 0.9rem;
}

.problem-box .box-title { color: #dc2626; }
.problem-box .box-title::before { content: '❌'; }
.needs-box .box-title { color: #16a34a; }
.needs-box .box-title::before { content: '💚'; }
.strategy-box .box-title { color: #2563eb; }
.strategy-box .box-title::before { content: '🎯'; }

/* 타임라인 */
.timeline {
    position: relative;
    padding-left: 1.5rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--gradient-start), var(--gradient-end), var(--secondary-color));
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.3);
}

.timeline-item {
    position: relative;
    padding: 0.8rem;
    margin-bottom: 0.5rem;
    border-radius: 8px;
    margin-left: 0.5rem;
    overflow: hidden;
}

.timeline-item::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 80px;
    height: 80px;
    opacity: 0.3;
    pointer-events: none;
}

.timeline-item:nth-child(odd) {
    background:
        linear-gradient(135deg, #f0fdf4, #dcfce7),
        url("data:image/svg+xml,%3Csvg width='30' height='30' viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M15 5 L25 15 L15 25 L5 15 Z' fill='none' stroke='%2310b981' stroke-opacity='0.06' stroke-width='1'/%3E%3C/svg%3E");
}

.timeline-item:nth-child(odd)::after {
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='25' fill='none' stroke='%2310b981' stroke-opacity='0.2' stroke-width='2' stroke-dasharray='5,3'/%3E%3C/svg%3E") no-repeat center;
}

.timeline-item:nth-child(even) {
    background:
        linear-gradient(135deg, #eff6ff, #dbeafe),
        url("data:image/svg+xml,%3Csvg width='30' height='30' viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='15' cy='15' r='8' fill='none' stroke='%232563eb' stroke-opacity='0.06' stroke-width='1'/%3E%3C/svg%3E");
}

.timeline-item:nth-child(even)::after {
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='10' y='10' width='40' height='40' rx='8' fill='none' stroke='%232563eb' stroke-opacity='0.2' stroke-width='2' stroke-dasharray='5,3'/%3E%3C/svg%3E") no-repeat center;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -1.5rem;
    top: 0.3rem;
    width: 12px;
    height: 12px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--primary-color), 0 0 15px rgba(102, 126, 234, 0.4);
    z-index: 1;
}

.timeline-title {
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
}

.timeline-item p {
    font-size: 0.8rem;
}

/* 푸터 */
.footer {
    background:
        linear-gradient(135deg, #1f2937, #111827),
        url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    color: var(--white);
    padding: 1.5rem 1rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(102, 126, 234, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(118, 75, 162, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.footer::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end), var(--accent-color), var(--secondary-color));
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.footer h3 {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.footer p {
    opacity: 0.8;
    font-size: 0.8rem;
}

/* 인용문 */
blockquote {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border: none;
    border-left: 5px solid transparent;
    border-image: linear-gradient(180deg, #667eea, #764ba2) 1;
    padding: 1.5rem 2rem 1.5rem 2.5rem;
    margin: 1.5rem 0;
    border-radius: 0 16px 16px 0;
    font-style: italic;
    font-size: 0.95rem;
    color: var(--text-color);
    position: relative;
    overflow: hidden;
    box-shadow:
        0 10px 30px -5px rgba(102, 126, 234, 0.15),
        0 4px 6px -2px rgba(102, 126, 234, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
    transition: all 0.3s ease;
}

blockquote::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 15px;
    font-size: 5rem;
    font-family: Georgia, serif;
    color: var(--gradient-start);
    opacity: 0.15;
    line-height: 1;
}

blockquote::after {
    content: '"';
    position: absolute;
    bottom: -40px;
    right: 20px;
    font-size: 5rem;
    font-family: Georgia, serif;
    color: var(--gradient-end);
    opacity: 0.15;
    line-height: 1;
}

blockquote:hover {
    transform: translateX(5px);
    box-shadow:
        0 15px 40px -5px rgba(102, 126, 234, 0.2),
        0 6px 10px -2px rgba(102, 126, 234, 0.15);
}

blockquote cite {
    display: block;
    margin-top: 0.5rem;
    font-style: normal;
    font-weight: 600;
    color: var(--primary-color);
    font-size: 0.8rem;
}

/* 버튼 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255,255,255,0.3),
        transparent
    );
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--white);
    box-shadow:
        0 4px 15px rgba(102, 126, 234, 0.4),
        inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-primary:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 8px 25px rgba(102, 126, 234, 0.5),
        0 4px 10px rgba(118, 75, 162, 0.3),
        inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-primary:active {
    transform: translateY(-1px) scale(0.98);
}

.btn-outline {
    background: rgba(255,255,255,0.9);
    border: 2px solid transparent;
    background-image: linear-gradient(white, white), linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    background-origin: border-box;
    background-clip: padding-box, border-box;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.15);
}

.btn-outline:hover {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: var(--white);
    transform: translateY(-3px) scale(1.02);
    box-shadow:
        0 8px 25px rgba(102, 126, 234, 0.4),
        inset 0 1px 0 rgba(255,255,255,0.2);
}

.btn-outline:active {
    transform: translateY(-1px) scale(0.98);
}

/* 반응형 */
@media (max-width: 768px) {
    body {
        font-size: 13px;
    }

    .navbar {
        padding: 0.4rem 0.6rem;
    }

    .logo {
        font-size: 0.9rem;
    }

    .nav-menu {
        display: none;
    }

    .hero {
        padding: 4rem 0.8rem 1.5rem;
    }

    .hero h1 {
        font-size: 1.4rem;
    }

    .hero .subtitle {
        font-size: 0.85rem;
    }

    .hero-badge {
        font-size: 0.7rem;
        padding: 0.2rem 0.8rem;
    }

    .main-content {
        padding: 1rem 0.5rem;
    }

    .section {
        padding: 0.8rem;
        margin-bottom: 0.6rem;
        border-radius: 8px;
    }

    .section-title {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }

    .section-subtitle {
        font-size: 0.8rem;
        margin-bottom: 0.6rem;
    }

    .card-grid {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .card {
        padding: 0.8rem;
    }

    .card-icon {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
        margin-bottom: 0.5rem;
    }

    .card h3 {
        font-size: 0.9rem;
    }

    .card p {
        font-size: 0.75rem;
    }

    .highlight-box {
        padding: 0.6rem 0.8rem;
        margin: 0.6rem 0;
    }

    .highlight-box h4 {
        font-size: 0.8rem;
    }

    .highlight-box p {
        font-size: 0.75rem;
    }

    .data-table {
        font-size: 0.7rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.4rem;
    }

    .feature-list li {
        padding: 0.3rem 0;
        padding-left: 1rem;
        font-size: 0.75rem;
    }

    .stakeholder-card {
        padding: 0.8rem;
    }

    .stakeholder-icon {
        width: 28px;
        height: 28px;
        font-size: 0.85rem;
    }

    .stakeholder-title {
        font-size: 0.85rem;
    }

    .problem-box, .needs-box, .strategy-box {
        padding: 0.5rem;
        font-size: 0.7rem;
    }

    .scenario-card {
        padding: 0.8rem;
    }

    .timeline-item {
        padding: 0.6rem;
    }

    .timeline-title {
        font-size: 0.8rem;
    }

    .timeline-item p {
        font-size: 0.75rem;
    }

    blockquote {
        padding: 0.6rem 0.8rem;
        font-size: 0.8rem;
    }

    .key-message {
        padding: 1rem;
    }

    .key-message h3 {
        font-size: 1rem;
    }

    .key-message p {
        font-size: 0.85rem;
    }

    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.75rem;
    }

    .footer {
        padding: 1rem 0.8rem;
    }

    .footer h3 {
        font-size: 0.9rem;
    }

    .footer p {
        font-size: 0.75rem;
    }
}

/* 애니메이션 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-in {
    animation: fadeInUp 0.6s ease forwards;
}

/* 핵심 메시지 박스 */
.key-message {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    color: var(--white);
    padding: 2rem 1.5rem;
    border-radius: 20px;
    text-align: center;
    margin: 1.5rem 0;
    position: relative;
    overflow: hidden;
    box-shadow:
        0 20px 60px -15px rgba(102, 126, 234, 0.5),
        0 10px 20px -5px rgba(118, 75, 162, 0.3),
        inset 0 1px 0 rgba(255,255,255,0.2);
    transition: all 0.4s ease;
}

.key-message::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(255,255,255,0.2) 0%, transparent 40%),
        radial-gradient(circle at 80% 80%, rgba(255,255,255,0.1) 0%, transparent 40%);
    pointer-events: none;
}

.key-message::after {
    content: '';
    position: absolute;
    top: -100%;
    left: -100%;
    width: 300%;
    height: 300%;
    background: linear-gradient(
        45deg,
        transparent 30%,
        rgba(255,255,255,0.1) 50%,
        transparent 70%
    );
    pointer-events: none;
    animation: shine 4s ease-in-out infinite;
}

@keyframes shine {
    0% { transform: translateX(-50%) translateY(-50%) rotate(45deg); }
    100% { transform: translateX(50%) translateY(50%) rotate(45deg); }
}

.key-message:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow:
        0 30px 80px -15px rgba(102, 126, 234, 0.6),
        0 15px 30px -5px rgba(118, 75, 162, 0.4),
        inset 0 1px 0 rgba(255,255,255,0.3);
}

.key-message h3 {
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
    font-weight: 800;
}

.key-message p {
    font-size: 1rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    line-height: 1.8;
    text-shadow: 0 1px 5px rgba(0,0,0,0.1);
}

/* AI 역할 섹션 */
.ai-role {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.8rem;
    margin-top: 1rem;
}

@media (max-width: 900px) {
    .ai-role {
        grid-template-columns: 1fr;
    }
}

.ai-card {
    background: #f8fafc;
    border-radius: 16px;
    padding: 1.2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: none;
}

.ai-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ai-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(255,255,255,0.8) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.ai-card:hover {
    transform: translateY(-8px) scale(1.02);
}

.ai-card:hover::before {
    opacity: 1;
}

.ai-card:hover::after {
    opacity: 0.3;
}

.ai-card:nth-child(1) {
    background: linear-gradient(135deg, #ecfeff 0%, #cffafe 50%, #a5f3fc 100%);
    box-shadow:
        0 10px 30px -5px rgba(6, 182, 212, 0.2),
        0 4px 6px -2px rgba(6, 182, 212, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.ai-card:nth-child(1)::before {
    background: linear-gradient(90deg, #06b6d4, #22d3ee, #06b6d4);
}

.ai-card:nth-child(1):hover {
    box-shadow:
        0 20px 50px -5px rgba(6, 182, 212, 0.3),
        0 8px 15px -2px rgba(6, 182, 212, 0.15);
}

.ai-card:nth-child(2) {
    background: linear-gradient(135deg, #fdf4ff 0%, #fae8ff 50%, #f5d0fe 100%);
    box-shadow:
        0 10px 30px -5px rgba(217, 70, 239, 0.2),
        0 4px 6px -2px rgba(217, 70, 239, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.ai-card:nth-child(2)::before {
    background: linear-gradient(90deg, #d946ef, #e879f9, #d946ef);
}

.ai-card:nth-child(2):hover {
    box-shadow:
        0 20px 50px -5px rgba(217, 70, 239, 0.3),
        0 8px 15px -2px rgba(217, 70, 239, 0.15);
}

.ai-card:nth-child(3) {
    background: linear-gradient(135deg, #fff7ed 0%, #ffedd5 50%, #fed7aa 100%);
    box-shadow:
        0 10px 30px -5px rgba(249, 115, 22, 0.2),
        0 4px 6px -2px rgba(249, 115, 22, 0.1),
        inset 0 1px 0 rgba(255,255,255,0.8);
}

.ai-card:nth-child(3)::before {
    background: linear-gradient(90deg, #f97316, #fb923c, #f97316);
}

.ai-card:nth-child(3):hover {
    box-shadow:
        0 20px 50px -5px rgba(249, 115, 22, 0.3),
        0 8px 15px -2px rgba(249, 115, 22, 0.15);
}

.ai-card h4 {
    color: var(--text-color);
    margin-bottom: 0.8rem;
    font-size: 1rem;
    font-weight: 700;
    position: relative;
    z-index: 1;
}

.ai-card ul {
    text-align: left;
    list-style: none;
    padding: 0;
    position: relative;
    z-index: 1;
}

.ai-card li {
    padding: 0.25rem 0;
    font-size: 0.75rem;
    color: var(--text-light);
}

/* 주의사항 */
.caution-list {
    background:
        linear-gradient(135deg, #fef2f2, #fee2e2),
        url("data:image/svg+xml,%3Csvg width='40' height='40' viewBox='0 0 40 40' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M20 8 L32 32 L8 32 Z' fill='none' stroke='%23dc2626' stroke-opacity='0.08' stroke-width='1'/%3E%3C/svg%3E");
    border: 1px solid #fecaca;
    border-radius: 8px;
    padding: 0.8rem 1rem;
    margin: 0.8rem 0;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(220, 38, 38, 0.1);
}

.caution-list::before {
    content: '';
    position: absolute;
    top: -20px;
    right: -20px;
    width: 80px;
    height: 80px;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='30' cy='30' r='25' fill='none' stroke='%23dc2626' stroke-opacity='0.1' stroke-width='2'/%3E%3Cpath d='M30 18 L30 35 M30 40 L30 42' stroke='%23dc2626' stroke-opacity='0.15' stroke-width='3' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat;
    opacity: 0.8;
    pointer-events: none;
}

.caution-list h4 {
    color: #dc2626;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

.caution-list ul {
    list-style: none;
    padding: 0;
    position: relative;
    z-index: 1;
}

.caution-list li {
    padding: 0.25rem 0;
    padding-left: 1.2rem;
    position: relative;
    color: #7f1d1d;
    font-size: 0.8rem;
}

.caution-list li::before {
    content: '✕';
    position: absolute;
    left: 0;
    color: #dc2626;
    font-size: 0.75rem;
}

/* PDF 뷰어 */
.pdf-viewer-section {
    background:
        linear-gradient(135deg, #fdf4ff, #fae8ff),
        url("data:image/svg+xml,%3Csvg width='50' height='50' viewBox='0 0 50 50' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='5' y='5' width='15' height='20' rx='2' fill='none' stroke='%23e879f9' stroke-opacity='0.1' stroke-width='1'/%3E%3Cline x1='8' y1='10' x2='17' y2='10' stroke='%23e879f9' stroke-opacity='0.08'/%3E%3Cline x1='8' y1='14' x2='17' y2='14' stroke='%23e879f9' stroke-opacity='0.08'/%3E%3Cline x1='8' y1='18' x2='14' y2='18' stroke='%23e879f9' stroke-opacity='0.08'/%3E%3C/svg%3E");
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    box-shadow: 0 4px 20px rgba(232, 121, 249, 0.15);
    border: 1px solid #e879f9;
    position: relative;
    overflow: hidden;
}

.pdf-viewer-section::before {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 120px;
    height: 120px;
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='10' y='10' width='60' height='80' rx='5' fill='none' stroke='%23e879f9' stroke-opacity='0.2' stroke-width='2'/%3E%3Cpath d='M55 10 L55 30 L75 30' fill='none' stroke='%23e879f9' stroke-opacity='0.15' stroke-width='2'/%3E%3C/svg%3E") no-repeat;
    opacity: 0.6;
    pointer-events: none;
}

.pdf-viewer-section:nth-of-type(even) {
    background:
        linear-gradient(135deg, #ecfeff, #cffafe),
        url("data:image/svg+xml,%3Csvg width='50' height='50' viewBox='0 0 50 50' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='5' y='5' width='15' height='20' rx='2' fill='none' stroke='%2322d3ee' stroke-opacity='0.1' stroke-width='1'/%3E%3Cline x1='8' y1='10' x2='17' y2='10' stroke='%2322d3ee' stroke-opacity='0.08'/%3E%3Cline x1='8' y1='14' x2='17' y2='14' stroke='%2322d3ee' stroke-opacity='0.08'/%3E%3Cline x1='8' y1='18' x2='14' y2='18' stroke='%2322d3ee' stroke-opacity='0.08'/%3E%3C/svg%3E");
    border-color: #22d3ee;
    box-shadow: 0 4px 20px rgba(34, 211, 238, 0.15);
}

.pdf-viewer-section:nth-of-type(even)::before {
    background: url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Crect x='10' y='10' width='60' height='80' rx='5' fill='none' stroke='%2322d3ee' stroke-opacity='0.2' stroke-width='2'/%3E%3Cpath d='M55 10 L55 30 L75 30' fill='none' stroke='%2322d3ee' stroke-opacity='0.15' stroke-width='2'/%3E%3C/svg%3E") no-repeat;
}

.pdf-viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.8rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.pdf-viewer-header h3 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.pdf-viewer-header h3::before {
    content: '📄';
}

.pdf-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.4rem 0.8rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.pdf-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.pdf-container {
    width: 100%;
    height: 500px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    background: #f8fafc;
}

.pdf-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.pdf-fallback {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    padding: 2rem;
    text-align: center;
    color: var(--text-light);
}

.pdf-fallback p {
    margin-bottom: 1rem;
}

@media (max-width: 768px) {
    .pdf-viewer-section {
        padding: 0.6rem;
    }

    .pdf-viewer-header h3 {
        font-size: 0.85rem;
    }

    .pdf-container {
        height: 350px;
    }

    .pdf-viewer-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* 매우 작은 화면 (480px 이하) */
@media (max-width: 480px) {
    body {
        font-size: 12px;
    }

    .hero {
        padding: 3.5rem 0.5rem 1rem;
    }

    .hero h1 {
        font-size: 1.2rem;
    }

    .hero .subtitle {
        font-size: 0.75rem;
    }

    .main-content {
        padding: 0.8rem 0.4rem;
    }

    .section {
        padding: 0.6rem;
        margin-bottom: 0.5rem;
    }

    .section-title {
        font-size: 0.9rem;
    }

    .card {
        padding: 0.6rem;
    }

    .card-icon {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }

    .card h3 {
        font-size: 0.85rem;
    }

    .card p {
        font-size: 0.7rem;
    }

    .data-table {
        font-size: 0.65rem;
    }

    .data-table th,
    .data-table td {
        padding: 0.3rem;
    }

    .pdf-container {
        height: 280px;
    }

    .key-message {
        padding: 0.8rem;
    }

    .key-message h3 {
        font-size: 0.9rem;
    }

    .key-message p {
        font-size: 0.75rem;
    }
}