/* ===== index PC (768px 이상) ===== */
@media (min-width: 768px) {
    .main-content {
        padding: 0;
        max-width: 1200px;
        margin: 0 auto;
    }

    /* ----- 배너 섹션 (화면 전체 와이드) ----- */
    .banner-section {
        position: relative;
        margin-bottom: 48px;
        overflow: hidden;
        width: 100vw;
        height: 105vh;
        left: 50%;
        margin-left: -50vw;
    }

    .banner-container {
        position: relative;
        width: 100%;
        height: 100%;
        overflow: hidden;
        background: #f0f0f0;
    }

    .banner-slide {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        opacity: 0;
        transition: opacity 0.5s ease;
        pointer-events: none;
    }

    .banner-slide.active {
        opacity: 1;
        width: 100%;
        height: 100%;
    }

    .magazine-banner {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
        padding: 0 20px;
    }

    .magazine-content {
        max-width: 1200px;
        width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 60px;
        align-items: center;
    }

    .magazine-text {
        text-align: left;
    }

    .magazine-label {
        display: inline-block;
        font-size: 16px;
        font-weight: 700;
        color: #007bff;
        letter-spacing: 2px;
        margin-bottom: 24px;
        text-transform: uppercase;
    }

    .magazine-headline {
        font-size: 64px;
        font-weight: 900;
        line-height: 1.1;
        color: #1a1a1a;
        margin-bottom: 32px;
        letter-spacing: -1px;
    }

    .magazine-headline span {
        color: #007bff;
        display: block;
    }

    .magazine-subhead {
        font-size: 20px;
        line-height: 1.6;
        color: #555;
        margin-bottom: 48px;
        font-weight: 400;
    }

    .magazine-specs {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
        margin-bottom: 48px;
    }

    .spec-item {
        border-left: 3px solid #007bff;
        padding-left: 16px;
    }

    .spec-number {
        display: block;
        font-size: 32px;
        font-weight: 800;
        color: #1a1a1a;
        margin-bottom: 4px;
    }

    .spec-label {
        font-size: 14px;
        color: #666;
    }

    .magazine-image {
        position: relative;
        height: 80vh;
        border-radius: 20px;
        overflow: hidden;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    }

    .magazine-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .banner-cta-fixed {
        position: absolute;
        bottom: 30px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 10;
        width: 100%;
        text-align: center;
    }

    .banner-buttons {
        display: flex;
        gap: 12px;
        justify-content: center;
    }

    .btn-cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 16px 0;
        width: 240px;
        font-size: 16px;
        font-weight: 700;
        border-radius: 50px;
        transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        text-decoration: none;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    }

    .btn-cta.primary {
        background: #007bff;
        color: #fff;
        animation: pulse-blue 4s infinite;
    }

    .btn-cta.kakao {
        background: #fee500;
        color: #3c1e1e;
        animation: pulse-yellow 4s infinite 2s;
    }

    @keyframes pulse-blue {
        0% {
            box-shadow: 0 0 0 0 rgba(0, 123, 255, 0.7);
        }

        35% {
            box-shadow: 0 0 0 20px rgba(0, 123, 255, 0);
        }

        100% {
            box-shadow: 0 0 0 0 rgba(0, 123, 255, 0);
        }
    }

    @keyframes pulse-yellow {
        0% {
            box-shadow: 0 0 0 0 rgba(254, 229, 0, 0.7);
        }

        35% {
            box-shadow: 0 0 0 20px rgba(254, 229, 0, 0);
        }

        100% {
            box-shadow: 0 0 0 0 rgba(254, 229, 0, 0);
        }
    }

    .btn-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        animation: none;
        /* 호버 시 애니메이션 중지 */
    }

    /* ----- 퀵 버튼 ----- */
    .quick-buttons-section {
        margin-bottom: 48px;
        padding: 0 20px;
    }

    .quick-buttons-container {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }

    .quick-button {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 24px 16px;
        background: #f8f9fa;
        border-radius: 12px;
        border: 1px solid #e9ecef;
        transition: transform 0.2s, box-shadow 0.2s;
        min-height: 120px;
    }

    .quick-button:hover {
        transform: translateY(-4px);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    }

    .quick-button img {
        width: 48px;
        height: 48px;
        object-fit: contain;
        margin-bottom: 12px;
    }

    .quick-button i {
        font-size: 36px;
        color: #007bff;
        margin-bottom: 12px;
    }

    .quick-button span {
        font-size: 14px;
        font-weight: 500;
        color: #333;
        text-align: center;
        line-height: 1.4;
    }

    /* ----- 강의 일정 ----- */
    .lecture-schedule-section {
        margin-bottom: 48px;
        padding: 48px 40px;
        background: linear-gradient(180deg, #f8f9fa 0%, #fff 100%);
        min-height: 70vh;
        display: flex;
        flex-direction: column;
        width: 100vw;
        margin-left: calc(-50vw + 50%);
    }

    .schedule-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: 32px;
        max-width: 1200px;
        width: 100%;
        margin-left: auto;
        margin-right: auto;
    }

    .schedule-header h2 {
        font-size: 24px;
        font-weight: 700;
        color: #1a1a1a;
        display: flex;
        align-items: center;
        gap: 10px;
    }

    .schedule-header h2 i {
        color: #007bff;
    }

    .schedule-header .btn-more {
        font-size: 14px;
        font-weight: 500;
        color: #007bff;
    }

    .schedule-header .btn-more:hover {
        color: #0056b3;
    }

    .schedule-content {
        display: grid;
        grid-template-columns: 320px 1fr;
        gap: 40px;
        max-width: 1200px;
        width: 100%;
        margin: 0 auto;
        flex: 1;
        overflow: hidden;
    }

    .schedule-calendar {
        background: #fff;
        padding: 28px;
        border-radius: 16px;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
        height: fit-content;
        position: sticky;
        top: 100px;
    }

    .calendar-month {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 20px;
        color: #1a1a1a;
        text-align: center;
    }

    .calendar-weekdays {
        display: grid;
        grid-template-columns: repeat(7, 1fr);
        gap: 4px;
        margin-bottom: 8px;
    }

    .calendar-weekday {
        text-align: center;
        font-size: 12px;
        font-weight: 600;
        color: #888;
        padding: 8px 0;
    }

    .calendar-weekday:first-child {
        color: #dc3545;
    }

    .calendar-weekday:last-child {
        color: #007bff;
    }

    .calendar-grid {
        display: grid;
        grid-template-columns: repeat(7, 1fr);
        gap: 4px;
    }

    .calendar-day {
        aspect-ratio: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        font-size: 14px;
        font-weight: 500;
        background: transparent;
        color: #555;
        cursor: default;
        transition: all 0.2s;
        position: relative;
    }

    .calendar-day.has-schedule {
        background: #007bff;
        color: #fff;
        font-weight: 600;
        cursor: pointer;
    }

    .calendar-day.has-schedule:hover {
        background: #0056b3;
        transform: scale(1.1);
    }

    .calendar-day.has-schedule::after {
        content: '';
        position: absolute;
        bottom: 4px;
        width: 4px;
        height: 4px;
        background: #fff;
        border-radius: 50%;
    }

    .calendar-day.today {
        border: 2px solid #007bff;
        font-weight: 700;
    }

    .calendar-day.sunday {
        color: #dc3545;
    }

    .calendar-day.saturday {
        color: #007bff;
    }

    .schedule-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
        overflow-y: auto;
        overflow-x: hidden;
        max-height: 500px;
        padding-right: 8px;
    }

    .schedule-list::-webkit-scrollbar {
        width: 6px;
    }

    .schedule-list::-webkit-scrollbar-track {
        background: #f0f0f0;
        border-radius: 10px;
    }

    .schedule-list::-webkit-scrollbar-thumb {
        background: linear-gradient(180deg, #007bff 0%, #0056b3 100%);
        border-radius: 10px;
    }

    .schedule-list::-webkit-scrollbar-thumb:hover {
        background: linear-gradient(180deg, #0056b3 0%, #003d80 100%);
    }

    .schedule-item {
        display: flex;
        align-items: center;
        padding: 20px 24px;
        background: #fff;
        border-radius: 12px;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
        gap: 20px;
        cursor: pointer;
        transition: all 0.2s;
        min-width: 0;
    }

    .schedule-item:hover {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        transform: translateX(4px);
    }

    .schedule-date-box {
        display: flex;
        flex-direction: column;
        align-items: center;
        min-width: 80px;
        padding-right: 20px;
        border-right: 1px solid #eee;
    }

    .schedule-date-month {
        font-size: 12px;
        color: #888;
        margin-bottom: 4px;
    }

    .schedule-date-day {
        font-size: 20px;
        font-weight: 700;
        color: #1a1a1a;
    }

    .schedule-info {
        flex: 1;
        min-width: 0;
        overflow: hidden;
    }

    .schedule-period {
        display: flex;
        align-items: center;
        gap: 6px;
        font-size: 12px;
        color: #888;
        margin-bottom: 6px;
    }

    .schedule-period i {
        font-size: 12px;
    }

    .schedule-title {
        font-size: 15px;
        font-weight: 600;
        color: #1a1a1a;
        line-height: 1.4;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .schedule-arrow {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 32px;
        height: 32px;
        color: #ccc;
        font-size: 18px;
        transition: color 0.2s;
    }

    .schedule-item:hover .schedule-arrow {
        color: #007bff;
    }

    .calendar-day.active {
        background: #0056b3;
        transform: scale(1.15);
    }

    .schedule-empty {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: 80px 40px;
        text-align: center;
    }

    .schedule-empty i {
        font-size: 64px;
        color: #ddd;
        margin-bottom: 20px;
    }

    .schedule-empty p {
        font-size: 18px;
        font-weight: 600;
        color: #666;
        margin-bottom: 8px;
    }

    .schedule-empty span {
        font-size: 14px;
        color: #999;
    }

    /* ----- 수강생 후기 ----- */
    .reviews-section {
        margin-bottom: 0;
        padding: 60px 0;
        background: #f8f9fa;
        width: 100vw;
        margin-left: calc(-50vw + 50%);
    }

    .reviews-section h2 {
        font-size: 22px;
        font-weight: 700;
        margin-bottom: 32px;
        color: #1a1a1a;
        display: flex;
        align-items: center;
        gap: 8px;
        max-width: 1200px;
        margin-left: auto;
        margin-right: auto;
        padding: 0;
    }

    .reviews-section h2::before {
        content: '⭐';
        font-size: 20px;
    }

    .reviews-container {
        overflow: hidden;
        position: relative;
        padding: 8px 0;
    }

    .reviews-slider {
        display: flex;
        gap: 20px;
        will-change: transform;
    }

    .reviews-slider:empty::after {
        content: '아직 등록된 후기가 없습니다.';
        display: block;
        text-align: center;
        color: #888;
        font-size: 15px;
        padding: 40px 0;
        width: 100%;
    }

    .review-item {
        flex: 0 0 360px;
        min-width: 360px;
        padding: 28px;
        background: #fff;
        border-radius: 14px;
        border: 1px solid #eee;
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    }

    .review-item:hover {
        background: #f5f5f5;
    }

    .review-category {
        font-size: 12px;
        color: #666;
        margin-bottom: 10px;
        padding: 4px 10px;
        background: #f0f0f0;
        border-radius: 6px;
        display: inline-block;
    }

    .review-stars {
        color: #ffc107;
        font-size: 14px;
        margin-bottom: 12px;
        letter-spacing: 2px;
    }

    .review-content {
        font-size: 15px;
        line-height: 1.8;
        color: #333;
        margin-bottom: 20px;
        min-height: 80px;
    }

    .review-author {
        font-size: 14px;
        font-weight: 600;
        color: #1a1a1a;
    }

    .review-date {
        font-size: 12px;
        color: #888;
        margin-top: 4px;
    }

    /* ----- 대표 소개 ----- */
    .ceo-section {
        padding: 64px 20px;
        background: #fff;
    }

    .ceo-container {
        max-width: 1000px;
        margin: 0 auto;
        display: grid;
        grid-template-columns: 280px 1fr;
        gap: 48px;
        align-items: center;
    }

    .ceo-image {
        text-align: center;
    }

    .ceo-image img {
        width: 240px;
        height: 240px;
        border-radius: 50%;
        object-fit: cover;
        border: 4px solid #f0f0f0;
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    }

    .ceo-info {
        padding: 0;
    }

    .ceo-badge {
        display: inline-block;
        padding: 6px 14px;
        background: #007bff;
        color: #fff;
        border-radius: 20px;
        font-size: 13px;
        font-weight: 600;
        margin-bottom: 12px;
    }

    .ceo-name {
        font-size: 32px;
        font-weight: 800;
        color: #1a1a1a;
        margin-bottom: 8px;
    }

    .ceo-title {
        font-size: 16px;
        color: #666;
        margin-bottom: 24px;
    }

    .ceo-achievements {
        margin-bottom: 24px;
    }

    .ceo-achievements li {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 10px 0;
        font-size: 15px;
        color: #333;
        border-bottom: 1px solid #f0f0f0;
    }

    .ceo-achievements li:last-child {
        border-bottom: none;
    }

    .ceo-achievements li i {
        color: #007bff;
        font-size: 18px;
    }

    .ceo-quote {
        font-size: 16px;
        font-style: italic;
        color: #555;
        padding: 16px 20px;
        background: #f8f9fa;
        border-left: 4px solid #007bff;
        border-radius: 0 8px 8px 0;
        margin-bottom: 28px;
    }

    .btn-ceo-cta {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 16px 32px;
        background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
        color: #fff;
        border-radius: 50px;
        font-size: 17px;
        font-weight: 700;
        box-shadow: 0 4px 20px rgba(0, 123, 255, 0.35);
        transition: all 0.3s ease;
    }

    .btn-ceo-cta:hover {
        transform: translateY(-3px);
        box-shadow: 0 6px 28px rgba(0, 123, 255, 0.45);
    }

    .btn-ceo-cta i {
        font-size: 20px;
    }

    .ceo-buttons {
        display: flex;
        gap: 16px;
        flex-wrap: wrap;
    }

    .btn-ceo-kakao {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        padding: 16px 32px;
        background: #fee500;
        color: #3c1e1e;
        border-radius: 50px;
        font-size: 17px;
        font-weight: 700;
        box-shadow: 0 4px 20px rgba(254, 229, 0, 0.35);
        transition: all 0.3s ease;
    }

    .btn-ceo-kakao:hover {
        transform: translateY(-3px);
        box-shadow: 0 6px 28px rgba(254, 229, 0, 0.45);
    }

    .btn-ceo-kakao i {
        font-size: 20px;
    }

    /* ----- CTA 섹션 ----- */
    .cta-section {
        text-align: center;
        margin: 64px 0 80px;
        padding: 48px 20px;
        background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
        border-radius: 20px;
    }

    .cta-section h3 {
        font-size: 24px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
    }

    .cta-section p {
        font-size: 16px;
        color: rgba(255, 255, 255, 0.85);
        margin-bottom: 24px;
    }

    .btn-cta-large {
        display: inline-block;
        padding: 18px 48px;
        background: #fff;
        color: #007bff;
        border-radius: 50px;
        font-size: 18px;
        font-weight: 700;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    }

    .btn-cta-large:hover {
        background: #f8f9fa;
    }
}