/**
 * 首页专属样式（index.html）
 * 依赖：css/mosp-design.css
 */

.main-container {
    max-width: var(--container-max);
    margin: 40px auto;
    padding: 0 20px;
}

/* Hero 首屏 */
.hero-section {
    background: url('../printing.png') center 58% / cover no-repeat;
    color: var(--white);
    padding: 100px 20px;
    text-align: center;
    position: relative;
    overflow: hidden;
    min-height: 420px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(15, 37, 55, 0.78) 0%, rgba(30, 61, 89, 0.65) 100%),
        radial-gradient(circle at 80% 20%, rgba(10, 92, 54, 0.2) 0%, transparent 50%);
    pointer-events: none;
}

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

.hero-tag {
    display: inline-block;
    background-color: var(--mosp-green);
    color: var(--white);
    font-size: 13px;
    padding: 4px 16px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-weight: 600;
    letter-spacing: 1px;
}

.hero-title {
    font-family: Georgia, "Times New Roman", "SimSun", serif;
    font-size: 38px;
    font-weight: 700;
    margin-bottom: 15px;
    letter-spacing: 2px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

.hero-desc {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.88);
    max-width: 600px;
    margin: 0 auto;
    font-weight: 300;
    text-shadow: 0 1px 8px rgba(0, 0, 0, 0.35);
}

/* 三栏卡片 */
.grid-row {
    display: block;
    margin-bottom: 50px;
}

.grid-3-col {
    display: table;
    table-layout: fixed;
    border-collapse: separate;
    border-spacing: 20px 0;
    margin-left: -20px;
    width: calc(100% + 40px);
}

.grid-col {
    display: table-cell;
    vertical-align: top;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.03);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.grid-col:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.magazine-cover {
    background-color: var(--mosp-green-light);
    height: 240px;
    text-align: center;
    padding: 30px;
    border-top-left-radius: var(--radius);
    border-top-right-radius: var(--radius);
}

.magazine-mockup {
    width: 130px;
    height: 180px;
    background: var(--white);
    margin: 0 auto;
    box-shadow: 3px 5px 15px rgba(0, 0, 0, 0.15);
    border-left: 6px solid var(--mosp-green);
    padding: 15px 10px;
    text-align: left;
}

.mockup-logo {
    font-size: 14px;
    font-weight: bold;
    color: var(--mosp-green);
}

.mockup-line {
    height: 4px;
    background: var(--border-light);
    margin-top: 10px;
    width: 80%;
}

.book-visual {
    background-color: #f0f4f8;
    height: 240px;
    text-align: center;
    padding: 30px;
    border-top-left-radius: var(--radius);
    border-top-right-radius: var(--radius);
}

.book-mockup {
    width: 120px;
    height: 170px;
    background: linear-gradient(to right, var(--academic-blue), var(--accent-blue));
    color: var(--white);
    margin: 5px auto;
    box-shadow: 5px 8px 20px rgba(0, 0, 0, 0.2);
    padding: 20px 10px;
    text-align: center;
    font-size: 12px;
    border-radius: 2px 4px 4px 2px;
}

.course-banner {
    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.7)),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect fill="%230f2537" width="100" height="100"/><circle fill="%230A5C36" opacity="0.3" cx="50" cy="50" r="40"/></svg>');
    height: 240px;
    color: var(--white);
    padding: 30px;
    display: table;
    width: 100%;
    border-top-left-radius: var(--radius);
    border-top-right-radius: var(--radius);
}

.course-banner-inner {
    display: table-cell;
    vertical-align: bottom;
}

.course-badge {
    background-color: var(--badge-text);
    color: var(--white);
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius);
    display: inline-block;
    margin-bottom: 10px;
}

.card-body {
    padding: 25px;
}

.card-tag {
    font-size: 12px;
    color: var(--mosp-green);
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 8px;
}

.card-title {
    font-size: 18px;
    color: var(--academic-blue);
    font-weight: 700;
    margin-bottom: 12px;
}

.card-text {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 20px;
    height: 66px;
    overflow: hidden;
}

.grid-col:hover .btn-outline {
    background-color: var(--mosp-green);
    color: var(--white);
}

/* 名师团队 */
.teachers-section {
    background-color: var(--white);
    border: 1px solid var(--border-color);
    padding: 50px 30px;
    border-radius: var(--radius);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
    margin-bottom: 5px;
}

.teacher-table {
    width: 100%;
    display: table;
    table-layout: fixed;
    border-collapse: separate;
    border-spacing: 30px 0;
}

.teacher-cell {
    display: table-cell;
    text-align: center;
    vertical-align: top;
}

.avatar-box {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background-color: #f0f0f2;
    margin: 0 auto 15px auto;
    border: 2px solid var(--mosp-green-light);
    display: table;
}

.avatar-placeholder {
    display: table-cell;
    vertical-align: middle;
    font-size: 28px;
    color: var(--mosp-green);
}

.teacher-name {
    font-size: 16px;
    color: var(--academic-blue);
    font-weight: 700;
    margin-bottom: 5px;
}

.teacher-title {
    font-size: 12px;
    color: var(--mosp-green);
    font-weight: 600;
    margin-bottom: 8px;
}

.teacher-desc {
    font-size: 13px;
    color: var(--text-muted);
    padding: 0 10px;
}

/* 首页页脚无上边距（Hero 后直接接内容） */
.index-page footer {
    margin-top: 0;
}

@media (max-width: 768px) {
    .grid-3-col,
    .teacher-table {
        display: block !important;
        width: 100% !important;
        margin-left: 0 !important;
        border-spacing: 0 !important;
    }

    .grid-col {
        display: block !important;
        width: 100% !important;
        margin-bottom: 25px;
    }

    .teacher-cell {
        display: block !important;
        width: 100% !important;
        margin-bottom: 40px;
    }
}