/* ============================================================
   香子湾科技 · 建站学院（列表页 + 文章页）专用样式
   文件：css/academy.css
   使用页面：academy.html / academy-*.html
   依赖：css/common.css（页脚、生态条等跨页模块）
   规范：本文件不含任何行内样式，所有视觉一律走 class
   主色 #2563eb / 浅蓝 #e8f0ff / 深色文字 #0f172a / 辅助 #64748b
   ============================================================ */

/* ---------- 基础 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
body {
    background-color: #f7f9ff;
    color: #1e293b;
    line-height: 1.6;
}

/* ---------- 导航栏 ---------- */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 48px;
    background: #ffffff;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-size: 18px;
}
.logo-img {
    height: 36px;
    width: auto;
    display: block;
}
nav ul {
    display: flex;
    gap: 36px;
    list-style: none;
}
nav a {
    text-decoration: none;
    color: #334155;
    font-size: 15px;
}
nav a.active {
    color: #2563eb;
    position: relative;
}
nav a.active::after {
    content: "";
    position: absolute;
    bottom: -16px;
    left: 0;
    width: 100%;
    height: 3px;
    background: #2563eb;
}
.btn-blue {
    background: #2563eb;
    color: #fff;
    border: none;
    padding: 10px 22px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-size: 14px;
    text-decoration: none;
    display: inline-block;
}
.btn-blue:hover {
    background: #1d4ed8;
}
.btn-outline {
    background: #fff;
    border: 1px solid #cbd5e1;
    padding: 10px 26px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    color: #334155;
    text-decoration: none;
    display: inline-block;
}
.btn-outline:hover {
    border-color: #2563eb;
    color: #2563eb;
}
.btn-line {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: #2563eb;
    text-decoration: none;
    border-bottom: 1px solid #bfdbfe;
    padding-bottom: 2px;
}
.btn-line:hover {
    border-bottom-color: #2563eb;
}

/* ---------- 内页头部 ---------- */
.page-hero {
    max-width: 1080px;
    margin: 0 auto;
    padding: 52px 24px 4px;
    text-align: center;
}
.page-hero .eyebrow {
    color: #2563eb;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
}
.page-hero h1 {
    font-size: 36px;
    color: #0f172a;
    margin: 10px 0 14px;
    line-height: 1.32;
}
.page-hero h1 span {
    color: #2563eb;
}
.page-hero .divider-line {
    width: 48px;
    height: 3px;
    background: #2563eb;
    margin: 0 auto 20px;
}
.page-hero p {
    color: #64748b;
    font-size: 16px;
    max-width: 660px;
    margin: 0 auto;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px 18px;
    justify-content: center;
    font-size: 13px;
    color: #94a3b8;
    margin-top: 18px;
}
.article-meta span {
    display: inline-block;
}

/* ---------- 面包屑 ---------- */
.page-crumb {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 24px 0;
    font-size: 13px;
    color: #94a3b8;
}
.page-crumb a {
    color: #64748b;
    text-decoration: none;
}
.page-crumb a:hover {
    color: #2563eb;
}

/* ---------- 通用容器 ---------- */
.page-wrap {
    max-width: 1200px;
    margin: 0 auto;
    padding: 44px 24px 56px;
}
.block-head {
    margin-bottom: 28px;
}
.block-head h2 {
    font-size: 22px;
    color: #0f172a;
    margin-bottom: 8px;
}
.block-head p {
    font-size: 14px;
    color: #64748b;
}

/* ---------- 列表页：文章卡片 ---------- */
.academy-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.academy-card .a-ex {
    font-size: 13px;
    color: #64748b;
    line-height: 1.75;
    margin-bottom: 14px;
}
.academy-card h4 {
    margin-bottom: 8px;
}

/* 列表页顶部的导读条 */
.read-guide {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-left: 4px solid #2563eb;
    border-radius: 12px;
    padding: 24px 28px;
    margin-bottom: 36px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}
.read-guide h3 {
    font-size: 16px;
    color: #0f172a;
    margin-bottom: 10px;
}
.read-guide ol {
    margin-left: 20px;
}
.read-guide li {
    font-size: 14px;
    color: #475569;
    line-height: 1.9;
}
.read-guide li a {
    color: #2563eb;
    text-decoration: none;
}
.read-guide li a:hover {
    text-decoration: underline;
}

/* ---------- 文章正文 ---------- */
.article-wrap {
    max-width: 820px;
    margin: 0 auto;
    padding: 36px 24px 56px;
}
.article-body {
    background: #ffffff;
    border-radius: 12px;
    padding: 40px 44px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}
.article-body h2 {
    font-size: 21px;
    color: #0f172a;
    line-height: 1.45;
    margin: 36px 0 14px;
    padding-left: 14px;
    border-left: 4px solid #2563eb;
}
.article-body h2:first-child {
    margin-top: 0;
}
.article-body h3 {
    font-size: 16px;
    color: #0f172a;
    margin: 24px 0 10px;
}
.article-body p {
    font-size: 15px;
    color: #475569;
    line-height: 1.9;
    margin-bottom: 14px;
}
.article-body ul,
.article-body ol {
    margin: 0 0 16px 22px;
}
.article-body li {
    font-size: 15px;
    color: #475569;
    line-height: 1.9;
    margin-bottom: 6px;
}
.article-body strong {
    color: #0f172a;
}
.article-body a {
    color: #2563eb;
    text-decoration: none;
}
.article-body a:hover {
    text-decoration: underline;
}
.article-body ul.check {
    list-style: none;
    margin-left: 0;
}
.article-body ul.check li {
    position: relative;
    padding: 6px 0 6px 24px;
}
.article-body ul.check li::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 16px;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    background: #2563eb;
}

/* ---------- 对比表格 ---------- */
.art-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0 0 22px;
    font-size: 14px;
}
.art-table caption {
    caption-side: top;
    text-align: left;
    font-size: 13px;
    color: #94a3b8;
    padding-bottom: 8px;
}
.art-table th {
    background: #e8f0ff;
    color: #0f172a;
    font-weight: 600;
    text-align: left;
    padding: 12px 14px;
    border: 1px solid #dbe6f5;
    white-space: nowrap;
}
.art-table td {
    padding: 12px 14px;
    border: 1px solid #e6ebf3;
    color: #475569;
    line-height: 1.75;
    vertical-align: top;
}
.art-table tbody tr:nth-child(even) td {
    background: #fafcff;
}
.art-table .t-key {
    color: #0f172a;
    font-weight: 600;
}
.t-ok {
    color: #0d9488;
    font-weight: 600;
}
.t-no {
    color: #b45309;
    font-weight: 600;
}

/* ---------- 提示框 ---------- */
.art-callout {
    background: #e8f0ff;
    border-left: 4px solid #2563eb;
    border-radius: 8px;
    padding: 18px 22px;
    margin: 0 0 22px;
}
.art-callout p {
    font-size: 14px;
    color: #334155;
    line-height: 1.85;
    margin: 0;
}
.art-warn {
    background: #fffaf0;
    border-left: 4px solid #f59e0b;
    border-radius: 8px;
    padding: 18px 22px;
    margin: 0 0 22px;
}
.art-warn p {
    font-size: 14px;
    color: #4a3a1a;
    line-height: 1.85;
    margin: 0;
}
.art-warn strong {
    color: #92400e;
}

/* ---------- 文章底部 ---------- */
.art-cta {
    background: #e8f0ff;
    border-radius: 12px;
    padding: 30px 32px;
    margin-top: 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 24px;
}
.art-cta .cta-text h3 {
    font-size: 19px;
    color: #0f172a;
    margin-bottom: 6px;
}
.art-cta .cta-text p {
    font-size: 14px;
    color: #475569;
}
.art-cta .cta-buttons {
    display: flex;
    gap: 14px;
    flex: 0 0 auto;
}

/* ---------- 相关阅读 ---------- */
.art-related {
    margin-top: 36px;
}
.art-related h3 {
    font-size: 17px;
    color: #0f172a;
    margin-bottom: 16px;
}
.art-related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
}
.art-related-grid a {
    display: block;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 18px 20px;
    text-decoration: none;
    transition: border-color 0.2s ease, transform 0.2s ease;
}
.art-related-grid a:hover {
    border-color: #2563eb;
    transform: translateY(-2px);
}
.art-related-grid .r-cat {
    font-size: 12px;
    color: #2563eb;
}
.art-related-grid .r-title {
    display: block;
    font-size: 15px;
    color: #0f172a;
    font-weight: 500;
    line-height: 1.6;
    margin-top: 6px;
}

/* ---------- 底部 CTA 条 ---------- */
.cta-footer {
    background: #e8f0ff;
    padding: 48px;
    margin-top: 24px;
}
.cta-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.cta-text h3 {
    font-size: 24px;
    margin-bottom: 8px;
    color: #0f172a;
}
.cta-text p {
    font-size: 15px;
    color: #475569;
}
.cta-buttons {
    display: flex;
    gap: 16px;
}

/* ---------- 汉堡菜单 ---------- */
.nav-toggle-cb {
    display: none;
}
.nav-toggle-btn {
    display: none;
    font-size: 24px;
    line-height: 1;
    cursor: pointer;
    color: #0f172a;
    user-select: none;
    padding: 4px 8px;
}

/* ---------- 响应式 ---------- */
@media screen and (max-width: 996px) {
    header {
        padding: 12px 16px;
    }
    nav ul {
        gap: 14px;
    }
    .page-hero {
        padding: 40px 24px 4px;
    }
    .page-hero h1 {
        font-size: 28px;
    }
    .academy-list {
        grid-template-columns: repeat(2, 1fr);
    }
    .article-body {
        padding: 32px 28px;
    }
    .cta-inner {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }
    .art-cta {
        flex-direction: column;
        text-align: center;
    }
}

@media screen and (max-width: 768px) {
    header {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
    }
    .logo {
        flex: 1 1 auto;
    }
    .nav-toggle-btn {
        display: block;
    }
    header .btn-blue {
        margin-left: 10px;
    }
    nav {
        order: 9;
        width: 100%;
        display: none;
        background: #fff;
        border-top: 1px solid #e2e8f0;
        margin-top: 10px;
        box-shadow: 0 8px 16px rgba(15, 23, 42, 0.08);
    }
    .nav-toggle-cb:checked ~ nav {
        display: block;
    }
    nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }
    nav ul li {
        border-bottom: 1px solid #f1f5f9;
    }
    nav ul li:last-child {
        border-bottom: none;
    }
    nav ul li a {
        display: block;
        width: 100%;
        padding: 14px 4px;
        text-align: center;
    }
    .page-hero h1 {
        font-size: 24px;
    }
    .academy-list {
        grid-template-columns: 1fr;
    }
    .art-related-grid {
        grid-template-columns: 1fr;
    }
    .article-body {
        padding: 26px 20px;
    }
    .article-body h2 {
        font-size: 19px;
    }
    .art-table {
        font-size: 13px;
    }
    .art-table th,
    .art-table td {
        padding: 10px;
    }
    .cta-footer {
        padding: 32px 20px;
    }
    .cta-text h3 {
        font-size: 20px;
    }
    .cta-buttons {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media screen and (max-width: 480px) {
    .page-hero {
        padding: 30px 16px 4px;
    }
    .page-hero h1 {
        font-size: 22px;
    }
    .article-body {
        padding: 22px 16px;
    }
    .art-cta {
        padding: 24px 18px;
    }
}