/* ===================================
   Global Indicator Study - 스타일시트
   배색: 전기 블루 실버 #00B4D8, #A7B0C7, #1A1F2E
   폰트: Noto Serif KR
   =================================== */

:root {
    --primary: #00B4D8;
    --secondary: #A7B0C7;
    --dark: #1A1F2E;
    --dark-light: #252B3D;
    --dark-lighter: #2F3649;
    --white: #FFFFFF;
    --text-light: #E8EAF0;
    --text-muted: #8A92A6;
    --gradient-primary: linear-gradient(135deg, #00B4D8 0%, #0096B4 100%);
    --gradient-dark: linear-gradient(180deg, #1A1F2E 0%, #0D1117 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.35);
    --shadow-glow: 0 0 30px rgba(0, 180, 216, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Serif KR', serif;
    background-color: var(--dark);
    color: var(--text-light);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===================================
   헤더
   =================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 31, 46, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(167, 176, 199, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
    letter-spacing: 0.05em;
}

.logo i {
    color: var(--primary);
    font-size: 1.5rem;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav a {
    color: var(--secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    transition: color 0.3s ease;
    position: relative;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

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

.nav a:hover::after {
    width: 100%;
}

/* ===================================
   히어로 섹션
   =================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 100px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(0, 180, 216, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(167, 176, 199, 0.1) 0%, transparent 50%),
        var(--gradient-dark);
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 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='%23A7B0C7' 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");
    opacity: 0.5;
}

.hero-gradient {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: linear-gradient(to top, var(--dark), transparent);
    pointer-events: none;
}

.hero-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 180, 216, 0.1);
    border: 1px solid rgba(0, 180, 216, 0.3);
    border-radius: 30px;
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: 24px;
}

.hero-badge i {
    font-size: 0.75rem;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 24px;
    background: linear-gradient(135deg, var(--white) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--primary);
    margin-bottom: 20px;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.hero-desc {
    font-size: 0.95rem;
    color: var(--secondary);
    margin-bottom: 32px;
    line-height: 1.9;
}

.hero-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(167, 176, 199, 0.1);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(0, 180, 216, 0.08);
    border-color: rgba(0, 180, 216, 0.3);
    transform: translateY(-2px);
}

.feature-item i {
    color: var(--primary);
    font-size: 1rem;
}

.feature-item span {
    font-size: 0.875rem;
    color: var(--text-light);
}

/* 히어로 이미지 */
.hero-image {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 480px;
}

.hero-image-wrapper img {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(167, 176, 199, 0.15);
}

.hero-image-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(0, 180, 216, 0.3) 0%, transparent 70%);
    filter: blur(40px);
    z-index: -1;
}

/* ===================================
   섹션 공통
   =================================== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header.light h2 {
    color: var(--white);
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 180, 216, 0.1);
    border: 1px solid rgba(0, 180, 216, 0.2);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--primary);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.section-header h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 16px;
    color: var(--white);
}

.section-desc {
    font-size: 1.05rem;
    color: var(--secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

/* ===================================
   소개 섹션
   =================================== */
.about-section {
    padding: 100px 0;
    background: var(--dark);
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.about-card {
    padding: 40px 32px;
    background: linear-gradient(135deg, var(--dark-light) 0%, var(--dark) 100%);
    border: 1px solid rgba(167, 176, 199, 0.1);
    border-radius: 20px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.about-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 180, 216, 0.3);
    box-shadow: var(--shadow-glow);
}

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

.card-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 180, 216, 0.1);
    border-radius: 16px;
    margin-bottom: 24px;
}

.card-icon i {
    font-size: 1.5rem;
    color: var(--primary);
}

.about-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--white);
}

.about-card p {
    font-size: 0.95rem;
    color: var(--secondary);
    line-height: 1.7;
}

/* ===================================
   학습 방법 섹션
   =================================== */
.method-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 50%, var(--dark) 100%);
    position: relative;
}

.method-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 0% 50%, rgba(0, 180, 216, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 100% 50%, rgba(167, 176, 199, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    position: relative;
    z-index: 1;
}

.method-card {
    padding: 36px 28px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(167, 176, 199, 0.08);
    border-radius: 16px;
    transition: all 0.4s ease;
    position: relative;
}

.method-card:hover {
    background: rgba(0, 180, 216, 0.05);
    border-color: rgba(0, 180, 216, 0.2);
    transform: translateY(-4px);
}

.method-number {
    font-size: 3rem;
    font-weight: 700;
    color: rgba(0, 180, 216, 0.15);
    line-height: 1;
    margin-bottom: 16px;
}

.method-card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 12px;
}

.method-card p {
    font-size: 0.9rem;
    color: var(--secondary);
    line-height: 1.7;
}

.method-icon {
    position: absolute;
    top: 28px;
    right: 28px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 180, 216, 0.1);
    border-radius: 12px;
}

.method-icon i {
    color: var(--primary);
    font-size: 1rem;
}

/* ===================================
   커뮤니티 섹션
   =================================== */
.community-section {
    padding: 100px 0;
    background: var(--dark);
}

.community-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.community-text h2 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
    line-height: 1.3;
}

.community-desc {
    font-size: 1rem;
    color: var(--secondary);
    margin-bottom: 32px;
    line-height: 1.8;
}

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

.community-list li {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 0;
    border-bottom: 1px solid rgba(167, 176, 199, 0.1);
}

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

.community-list i {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 180, 216, 0.1);
    border-radius: 10px;
    color: var(--primary);
    font-size: 0.95rem;
}

.community-list span {
    font-size: 0.95rem;
    color: var(--text-light);
}

.community-visual {
    position: relative;
}

.community-image-wrapper {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.community-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    min-height: 400px;
    object-fit: cover;
}

.community-image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        180deg,
        rgba(26, 31, 46, 0.2) 0%,
        rgba(26, 31, 46, 0.6) 60%,
        rgba(26, 31, 46, 0.95) 100%
    );
}

.community-stats-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    display: flex;
    justify-content: space-around;
    gap: 16px;
}

.stat-item {
    text-align: center;
    padding: 16px 12px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    border: 1px solid rgba(167, 176, 199, 0.1);
    flex: 1;
}

.stat-number {
    display: block;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--secondary);
}

/* ===================================
   커리큘럼 섹션
   =================================== */
.curriculum-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.curriculum-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
}

.curriculum-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 28px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(167, 176, 199, 0.08);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.curriculum-item:hover {
    background: rgba(0, 180, 216, 0.05);
    border-color: rgba(0, 180, 216, 0.2);
    transform: translateX(8px);
}

.curriculum-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 180, 216, 0.1);
    border-radius: 14px;
}

.curriculum-icon i {
    color: var(--primary);
    font-size: 1.25rem;
}

.curriculum-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 8px;
}

.curriculum-content p {
    font-size: 0.9rem;
    color: var(--secondary);
    line-height: 1.6;
}

/* ===================================
   푸터
   =================================== */
.footer {
    padding: 60px 0 120px;
    background: var(--dark);
    border-top: 1px solid rgba(167, 176, 199, 0.1);
}

.footer-content {
    text-align: center;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 24px;
}

.footer-logo i {
    color: var(--primary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

.footer-copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===================================
   고정 CTA 버튼
   =================================== */
.fixed-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    padding: 16px 24px;
    background: linear-gradient(to top, rgba(26, 31, 46, 0.98) 0%, rgba(26, 31, 46, 0.95) 100%);
    backdrop-filter: blur(20px);
    border-top: 1px solid rgba(0, 180, 216, 0.2);
    display: flex;
    justify-content: center;
}

/* 버튼 펄스 애니메이션 */
@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(0, 180, 216, 0.4);
    }
    50% {
        transform: scale(1.03);
        box-shadow: 0 6px 30px rgba(0, 180, 216, 0.6);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 20px rgba(0, 180, 216, 0.4);
    }
}

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

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 40px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50px;
    font-family: 'Noto Serif KR', serif;
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 20px rgba(0, 180, 216, 0.4);
    animation: pulse 2s ease-in-out infinite;
    position: relative;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    background: var(--gradient-primary);
    border-radius: 50px;
    z-index: -1;
    opacity: 0.5;
    animation: pulse-glow 2s ease-in-out infinite;
}

.cta-button:hover {
    animation: none;
    transform: scale(1.05);
    box-shadow: 0 8px 40px rgba(0, 180, 216, 0.6);
}

.cta-button:hover::before {
    animation: none;
    opacity: 0.8;
    transform: scale(1.05);
}

.cta-button:active {
    transform: scale(0.98);
}

.cta-icon {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

/* ===================================
   모달
   =================================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    justify-content: center;
    align-items: center;
    padding: 24px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    width: 100%;
    max-width: 640px;
    max-height: 80vh;
    background: var(--dark-light);
    border: 1px solid rgba(167, 176, 199, 0.15);
    border-radius: 20px;
    overflow: hidden;
    transform: translateY(20px);
    transition: transform 0.3s ease;
}

.modal.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    background: var(--dark);
    border-bottom: 1px solid rgba(167, 176, 199, 0.1);
}

.modal-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--white);
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(167, 176, 199, 0.1);
    border-radius: 10px;
    color: var(--secondary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(0, 180, 216, 0.1);
    border-color: rgba(0, 180, 216, 0.3);
    color: var(--primary);
}

.modal-body {
    padding: 28px;
    max-height: calc(80vh - 85px);
    overflow-y: auto;
}

.modal-body h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin: 24px 0 12px;
}

.modal-body h4:first-child {
    margin-top: 0;
}

.modal-body p {
    font-size: 0.9rem;
    color: var(--secondary);
    line-height: 1.8;
    margin-bottom: 12px;
}

.modal-body ul {
    list-style: none;
    margin-bottom: 16px;
}

.modal-body ul li {
    position: relative;
    padding-left: 20px;
    font-size: 0.9rem;
    color: var(--secondary);
    line-height: 1.8;
}

.modal-body ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
}

/* 스크롤바 스타일 */
.modal-body::-webkit-scrollbar {
    width: 6px;
}

.modal-body::-webkit-scrollbar-track {
    background: transparent;
}

.modal-body::-webkit-scrollbar-thumb {
    background: rgba(167, 176, 199, 0.2);
    border-radius: 3px;
}

.modal-body::-webkit-scrollbar-thumb:hover {
    background: rgba(167, 176, 199, 0.3);
}

/* ===================================
   반응형
   =================================== */
@media (max-width: 992px) {
    .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .hero-content {
        text-align: center;
    }

    .hero-badge {
        margin-left: auto;
        margin-right: auto;
    }

    .hero h1 br {
        display: none;
    }

    .hero-desc br {
        display: none;
    }

    .hero-features {
        max-width: 400px;
        margin: 0 auto;
    }

    .hero-image {
        order: -1;
    }

    .hero-image-wrapper {
        max-width: 360px;
        margin: 0 auto;
    }

    .community-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .community-text {
        text-align: center;
    }

    .community-text .section-tag {
        margin-left: auto;
        margin-right: auto;
    }

    .community-list {
        max-width: 400px;
        margin: 0 auto;
    }

    .community-image-wrapper {
        max-width: 480px;
        margin: 0 auto;
    }

    .community-image-wrapper img {
        min-height: 320px;
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }

    .header .container {
        justify-content: center;
    }

    .hero {
        padding: 100px 0 80px;
    }

    .hero h1 {
        font-size: 1.875rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-desc {
        font-size: 0.9rem;
        line-height: 1.8;
    }

    .hero-features {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .feature-item {
        justify-content: center;
        padding: 12px 16px;
    }

    .hero-image-wrapper {
        max-width: 300px;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .section-header h2 br {
        display: none;
    }

    .section-desc br {
        display: none;
    }

    .about-section {
        padding: 60px 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .about-card {
        padding: 28px 24px;
        text-align: center;
    }

    .card-icon {
        margin-left: auto;
        margin-right: auto;
    }

    .method-section {
        padding: 60px 0;
    }

    .method-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .method-card {
        padding: 28px 24px;
        text-align: center;
    }

    .method-number {
        font-size: 2.5rem;
    }

    .method-icon {
        position: static;
        margin: 16px auto 0;
    }

    .community-section {
        padding: 60px 0;
    }

    .community-text h2 {
        font-size: 1.5rem;
    }

    .community-text h2 br {
        display: none;
    }

    .community-list li {
        justify-content: center;
        padding: 14px 0;
    }

    .community-stats-overlay {
        padding: 16px;
        gap: 10px;
    }

    .stat-item {
        padding: 12px 8px;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .stat-label {
        font-size: 0.75rem;
    }

    .curriculum-section {
        padding: 60px 0;
    }

    .curriculum-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .curriculum-item {
        padding: 20px;
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }

    .curriculum-item:hover {
        transform: translateY(-4px);
    }

    .footer {
        padding: 40px 0 100px;
    }

    .footer-links {
        flex-direction: column;
        gap: 12px;
    }

    .cta-button {
        padding: 14px 28px;
        font-size: 0.9rem;
    }

    .modal-content {
        max-height: 90vh;
        border-radius: 16px;
    }

    .modal-body {
        max-height: calc(90vh - 85px);
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .header .container {
        height: 60px;
    }

    .logo {
        font-size: 1rem;
    }

    .logo i {
        font-size: 1.25rem;
    }

    .hero {
        padding: 80px 0 60px;
    }

    .hero h1 {
        font-size: 1.625rem;
    }

    .hero-badge {
        font-size: 0.8rem;
        padding: 6px 16px;
    }

    .hero-subtitle {
        font-size: 0.875rem;
    }

    .hero-desc {
        font-size: 0.85rem;
        margin-bottom: 24px;
    }

    .hero-image-wrapper {
        max-width: 260px;
    }

    .feature-item {
        padding: 10px 14px;
    }

    .feature-item span {
        font-size: 0.8rem;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .section-tag {
        font-size: 0.7rem;
        padding: 5px 12px;
    }

    .section-header h2 {
        font-size: 1.375rem;
    }

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

    .about-card h3 {
        font-size: 1.1rem;
    }

    .about-card p {
        font-size: 0.875rem;
    }

    .method-card h3 {
        font-size: 1.05rem;
    }

    .method-card p {
        font-size: 0.85rem;
    }

    .community-image-wrapper img {
        min-height: 280px;
    }

    .community-stats-overlay {
        padding: 12px;
        gap: 8px;
    }

    .stat-item {
        padding: 10px 6px;
        border-radius: 8px;
    }

    .stat-number {
        font-size: 1.25rem;
    }

    .stat-label {
        font-size: 0.7rem;
    }

    .curriculum-content h3 {
        font-size: 1rem;
    }

    .curriculum-content p {
        font-size: 0.85rem;
    }

    .fixed-cta {
        padding: 12px 16px;
    }

    .cta-button {
        width: 100%;
        padding: 14px 20px;
        font-size: 0.875rem;
    }

    .cta-icon {
        width: 20px;
        height: 20px;
    }

    .modal-header {
        padding: 20px;
    }

    .modal-header h3 {
        font-size: 1.1rem;
    }

    .modal-body h4 {
        font-size: 0.95rem;
    }

    .modal-body p,
    .modal-body ul li {
        font-size: 0.85rem;
    }
}