/**
 * 存在学堂 - 温暖人文风格样式
 * 设计理念：柔和、温暖、易读、亲和
 */

/* ===== 全局样式 ===== */
:root {
    /* 温暖色系 */
    --primary-color: #E07B39;      /* 暖橙色 - 主色调 */
    --secondary-color: #D4A574;    /* 金棕色 */
    --accent-color: #8B7355;       /* 咖啡色 */
    
    /* 中性色 */
    --text-dark: #3E3E3E;          /* 深灰 - 主文字 */
    --text-light: #6B6B6B;         /* 浅灰 - 次要文字 */
    --bg-light: #FBF8F3;           /* 米白色 - 背景 */
    --bg-white: #FFFFFF;
    --border-color: #E8E1D8;       /* 浅棕边框 */
    
    /* 功能色 */
    --success-color: #7BA05B;      /* 温和绿 */
    --warning-color: #E8A245;      /* 暖黄 */
    --danger-color: #D96459;       /* 柔和红 */
    
    /* 字体 */
    --font-main: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-title: 'STSong', 'SimSun', serif;  /* 宋体 - 标题 */
    
    /* 间距 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* 圆角 */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    
    /* 阴影 */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.1);
}

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

body {
    font-family: var(--font-main);
    color: var(--text-dark);
    background-color: var(--bg-light);
    line-height: 1.8;
    font-size: 16px;
}

/* ===== 导航栏 ===== */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-title);
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '🌱';
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

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

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.user-section {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* ===== 按钮 ===== */
.btn {
    padding: 0.6rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: #C96D2F;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

/* ===== 主容器 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

.container-narrow {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* ===== 首页横幅 ===== */
.hero {
    background: linear-gradient(135deg, #FBF8F3 0%, #F5EFE6 100%);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.hero-title {
    font-family: var(--font-title);
    font-size: 3rem;
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
    font-weight: normal;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-lg);
}

/* ===== 卡片 ===== */
.card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all 0.3s;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.card-cover {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.card-meta {
    display: flex;
    gap: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.card-summary {
    color: var(--text-light);
    line-height: 1.7;
}

/* ===== 文章列表 ===== */
.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.article-item {
    position: relative;
}

.badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    padding: 0.3rem 0.8rem;
    background: var(--primary-color);
    color: white;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
}

.badge.member-only {
    background: var(--secondary-color);
}

.badge.top {
    background: var(--danger-color);
}

/* ===== 二维码展示区 ===== */
.qrcode-section {
    background: var(--bg-white);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xl);
}

.qrcode-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.qrcode-item {
    text-align: center;
    padding: var(--spacing-md);
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.qrcode-item img {
    width: 180px;
    height: 180px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.qrcode-item h3 {
    color: var(--accent-color);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
}

.qrcode-item p {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ===== 页脚 ===== */
.footer {
    background: var(--accent-color);
    color: rgba(255,255,255,0.8);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
    text-align: center;
}

.footer a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
}

.footer a:hover {
    color: white;
}

/* ===== 响应式 ===== */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .article-grid {
        grid-template-columns: 1fr;
    }
    
    .qrcode-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ===== 表单 ===== */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-dark);
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* ===== 会员等级徽章 ===== */
.level-badge {
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
}

.level-guest {
    background: #E8E8E8;
    color: #666;
}

.level-registered {
    background: #C8E6C9;
    color: #2E7D32;
}

.level-paid {
    background: #FFE0B2;
    color: #E65100;
}

.level-admin {
    background: #FFCDD2;
    color: #C62828;
}

/* ===== Academy 新版模块样式 ===== */
.academy-hero {
    padding-top: 3.2rem;
    padding-bottom: 3.2rem;
}

.academy-section-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.academy-section-head h2 {
    color: var(--accent-color);
    font-size: 1.55rem;
}

.academy-section-head a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.95rem;
}

.academy-page-head {
    margin-bottom: 1.2rem;
}

.academy-page-head h1 {
    font-size: 2rem;
    color: var(--accent-color);
    margin-bottom: 0.35rem;
}

.academy-page-head p {
    color: var(--text-light);
}

.academy-grid {
    display: grid;
    gap: 14px;
}

.academy-grid-q {
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.academy-grid-path {
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
}

.academy-grid-system {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.academy-grid-topic {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.academy-card {
    display: block;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px;
    text-decoration: none;
    color: var(--text-dark);
    box-shadow: var(--shadow-sm);
    transition: all 0.25s ease;
}

.academy-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: #d8b48a;
}

.academy-card h3 {
    font-size: 1.06rem;
    margin-bottom: 6px;
}

.academy-card p {
    font-size: 0.92rem;
    color: var(--text-light);
    line-height: 1.65;
}

.academy-pill {
    display: inline-block;
    margin-top: 8px;
    padding: 2px 10px;
    font-size: 12px;
    border-radius: 999px;
    background: #f8efe6;
    color: #8b6842;
}

.academy-meta-line {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 12px;
}

.academy-article-content {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 18px;
    line-height: 1.9;
    white-space: normal;
}

.academy-article-content table {
    width: 100%;
    border-collapse: collapse !important;
    border: 1px solid #b89163 !important;
    margin: 12px 0;
    background: #fff;
    box-shadow: inset 0 0 0 1px #b89163 !important;
}

.academy-article-content tr {
    border: 1px solid #b89163 !important;
}

.academy-article-content th,
.academy-article-content td {
    border: 1px solid #b89163 !important;
    padding: 8px 10px;
    vertical-align: top;
    background: #fff;
    box-shadow: inset 0 0 0 1px #b89163 !important;
}

.academy-article-content thead th {
    background: #f8f1e8 !important;
}

.academy-lock-box {
    background: #fff7ed;
    border: 1px solid #f1d0a8;
    color: #7b562e;
    border-radius: 12px;
    padding: 14px;
    margin-bottom: 12px;
}

.academy-tag-row {
    margin-top: 10px;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.academy-comment-box {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
}

.academy-comment-form textarea.form-input {
    resize: vertical;
}

.academy-comment-item {
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 12px;
    margin-bottom: 10px;
    background: #fffdfa;
}

.academy-comment-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.academy-comment-content {
    line-height: 1.75;
    color: var(--text-dark);
}

@media (max-width: 768px) {
    .academy-page-head h1 {
        font-size: 1.5rem;
    }
    .academy-section-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 6px;
    }
}

/* ===== czxt/public 首页总控台式布局 ===== */
.academy-hub-hero {
    background: linear-gradient(135deg, #f6efe5 0%, #fdf7ef 100%);
    padding: 2.2rem 0 1.2rem;
}

.academy-hub-wrap {
    padding-top: 0;
}

.academy-hub-title-row h1 {
    margin: 0;
    color: var(--accent-color);
    font-family: var(--font-title);
    font-size: 2.4rem;
}

.academy-hub-title-row p {
    margin: 0.4rem 0 1rem;
    color: var(--text-light);
}

.academy-hub-tabs {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.academy-hub-tabs a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    text-decoration: none;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: #fffaf4;
    color: #6d4e31;
    font-weight: 700;
    box-shadow: var(--shadow-sm);
}

.academy-hub-tabs a:hover {
    border-color: #d7b289;
    box-shadow: var(--shadow-md);
}

.academy-hub-strip {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    background: #fffdf8;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.85rem 1rem;
}

.academy-hub-strip span {
    color: #6f6255;
    font-size: 0.95rem;
}

.academy-hub-strip a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
}

.academy-hub-section-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 1.4rem 0 0.9rem;
}

.academy-hub-section-head h2 {
    margin: 0;
    font-size: 1.55rem;
    color: var(--accent-color);
}

.academy-hub-section-head a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.95rem;
}

.academy-hub-grid {
    display: grid;
    gap: 14px;
}

.academy-hub-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.academy-hub-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.academy-hub-card {
    display: block;
    border: 1px solid var(--border-color);
    background: #fff;
    border-radius: 14px;
    padding: 14px;
    text-decoration: none;
    color: inherit;
    box-shadow: var(--shadow-sm);
    transition: all .25s ease;
}

.academy-hub-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: #d3b08b;
}

.academy-hub-card-top {
    margin-bottom: 8px;
}

.academy-hub-icon {
    display: inline-flex;
    width: 38px;
    height: 38px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    color: #5d452f;
    background: #f8ecdf;
    border: 1px solid #eed9c2;
}

.academy-hub-card h3 {
    margin: 0 0 6px;
    font-size: 1.12rem;
}

.academy-hub-card p {
    margin: 0;
    color: var(--text-light);
    line-height: 1.65;
    font-size: 0.93rem;
}

.academy-hub-card-music {
    border-left: 6px solid #0f766e;
}

.academy-hub-card-system {
    border-left: 6px solid #8b7355;
}

.academy-hub-card-article {
    border-left: 6px solid #e07b39;
}

.academy-hub-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 8px 0;
    color: var(--text-light);
    font-size: 0.86rem;
}

.academy-hub-pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    border: 1px solid #ecd2b2;
    padding: 2px 8px;
    background: #fff5e9;
    color: #8b5f2f;
    font-size: 12px;
}

@media (max-width: 1024px) {
    .academy-hub-tabs {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
    .academy-hub-grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .academy-hub-grid-3 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .academy-hub-title-row h1 {
        font-size: 1.9rem;
    }
    .academy-hub-tabs {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .academy-hub-strip {
        flex-direction: column;
        align-items: flex-start;
    }
    .academy-hub-grid-4,
    .academy-hub-grid-3 {
        grid-template-columns: 1fr;
    }
}

/* ===== 学堂工作台卡片风格（对齐六大工作台） ===== */
.academy-wb-hero {
    background: linear-gradient(180deg, #f6efe5 0%, #fbf6ee 100%);
    padding: 18px 0 8px;
}

.academy-wb-title {
    margin: 0 0 10px;
    color: #2f241b;
    font-family: var(--font-title);
    font-size: 2.2rem;
}

.academy-wb-tabs {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 10px;
}

.academy-wb-tabs a {
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    border: 1px solid #dcc9b2;
    border-radius: 10px;
    background: #fffaf3;
    color: #3a2a1f;
    font-weight: 800;
    box-shadow: 0 8px 18px rgba(86, 54, 27, .07);
}

.academy-wb-strip {
    margin-top: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    border: 1px solid #dfcfba;
    border-radius: 12px;
    background: rgba(255,253,248,.96);
    padding: 14px 16px;
}

.academy-wb-strip strong {
    font-size: 1.05rem;
}

.academy-wb-strip span {
    color: #6f6255;
    flex: 1;
}

.academy-wb-cta {
    text-decoration: none;
    color: #7c4a1f;
    border: 1px solid #c79e73;
    border-radius: 10px;
    padding: 8px 14px;
    font-weight: 700;
    background: #fff8ef;
}

.academy-wb-section-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.academy-wb-section-head h2 {
    margin: 0;
    color: #36281e;
    font-size: 1.5rem;
}

.academy-wb-section-head a {
    color: #8b5f2f;
    text-decoration: none;
}

.academy-wb-grid {
    display: grid;
    gap: 14px;
}

.academy-wb-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.academy-wb-grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.academy-wb-card {
    display: block;
    position: relative;
    border: 1px solid #deccb7;
    border-radius: 12px;
    background: #fffdf8;
    box-shadow: 0 14px 30px rgba(86, 54, 27, .12);
    padding: 14px;
    text-decoration: none;
    color: inherit;
    overflow: hidden;
}

.academy-wb-card:before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 7px;
    background: #b08968;
}

.academy-wb-card.c1:before { background: #2563eb; }
.academy-wb-card.c2:before { background: #c2410c; }
.academy-wb-card.c3:before { background: #0f766e; }
.academy-wb-card.c4:before { background: #7c3aed; }
.academy-wb-card.c5:before { background: #9333ea; }
.academy-wb-card.c6:before { background: #b45309; }

.academy-wb-card-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.academy-wb-icon {
    width: 54px;
    height: 54px;
    border-radius: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #f3e7d8;
    color: #5d442a;
    font-size: 2rem;
    font-weight: 800;
}

.academy-wb-count {
    text-align: right;
    color: #6f6255;
}

.academy-wb-count b {
    display: block;
    font-size: 2rem;
    line-height: 1;
    color: #2e2117;
}

.academy-wb-card h3 {
    margin: 0 0 8px;
    font-size: 2rem;
    line-height: 1.2;
    color: #172032;
}

.academy-wb-card p {
    margin: 0;
    color: #5b5148;
    line-height: 1.6;
    font-size: 1.15rem;
}

.academy-wb-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin: 8px 0;
    color: #6f6255;
    font-size: .9rem;
}

@media (max-width: 1180px) {
    .academy-wb-tabs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .academy-wb-grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .academy-wb-grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
    .academy-wb-title { font-size: 1.8rem; }
    .academy-wb-tabs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .academy-wb-strip { flex-direction: column; align-items: flex-start; }
    .academy-wb-grid-4,
    .academy-wb-grid-3 { grid-template-columns: 1fr; }
    .academy-wb-card h3 { font-size: 1.6rem; }
    .academy-wb-card p { font-size: 1rem; }
}