/* 全局样式 */
:root {
    --primary-blue: #2563eb;
    --dark-blue: #1e40af;
    --light-blue: #dbeafe;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.pagination-bar .page-btn,
.table-foot .page-btn {
    min-width: 36px;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #d8e1ec;
    border-radius: 8px;
    background: #fff;
    color: #374151;
    font: inherit;
    font-size: 0.84rem;
    font-weight: 600;
    cursor: pointer;
}

.pagination-bar.numbered-pagination {
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.pagination-bar .page-btn:hover:not(:disabled),
.table-foot .page-btn:hover:not(:disabled) {
    background: #f3f4f6;
}

.pagination-bar .page-btn.active,
.table-foot .page-btn.active {
    background: #2563eb;
    border-color: #2563eb;
    color: #fff;
}

.pagination-bar .page-btn:disabled,
.table-foot .page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination-bar .page-ellipsis,
.table-foot .page-ellipsis {
    padding: 0 0.25rem;
    color: #9ca3af;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.nav-brand i {
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu a {
    color: var(--gray-700);
    font-weight: 500;
    transition: color 0.3s;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--gray-800);
    transition: 0.3s;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    background: var(--dark-blue);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    padding-top: 80px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--gray-700);
    margin-bottom: 1rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Section Title */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: 1.1rem;
    margin-bottom: 3rem;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s;
}

.feature-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
    border-color: var(--primary-blue);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--light-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon i {
    font-size: 1.8rem;
    color: var(--primary-blue);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--gray-800);
}

.feature-card p {
    color: var(--gray-600);
    margin-bottom: 1rem;
}

.feature-list {
    margin-top: 1rem;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}

.feature-list li i {
    color: var(--primary-blue);
    font-size: 0.8rem;
}

/* Advantages Section */
.advantages {
    padding: 6rem 0;
    background: var(--gray-50);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
}

.advantage-item i {
    font-size: 2.5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.advantage-item h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--gray-800);
}

.advantage-item p {
    color: var(--gray-600);
}

/* About Section */
.about {
    padding: 6rem 0;
    background: var(--white);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    color: var(--gray-600);
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Contact Section */
.contact {
    padding: 6rem 0;
    background: var(--gray-50);
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.contact-item {
    text-align: center;
    padding: 1.5rem;
}

.contact-item i {
    font-size: 2rem;
    color: var(--primary-blue);
    margin-bottom: 0.75rem;
}

.contact-item p {
    color: var(--gray-600);
}

/* Footer */
.footer {
    background: var(--gray-800);
    color: var(--white);
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
}

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

.footer-copyright {
    color: var(--gray-200);
    font-size: 0.9rem;
}

.mobile-editor-blocked {
    min-height: 100vh;
    overflow: hidden;
    background:
        radial-gradient(circle at 18% 16%, rgba(37, 99, 235, 0.14), transparent 28%),
        radial-gradient(circle at 82% 20%, rgba(15, 118, 110, 0.12), transparent 30%),
        #f4f7fb;
}

.mobile-editor-blocked > :not(.mobile-editor-guard) {
    display: none !important;
}

.mobile-editor-guard {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 1.25rem;
    color: #111827;
}

.mobile-editor-guard-card {
    width: min(100%, 420px);
    padding: 1.4rem;
    border: 1px solid #e5edf6;
    border-radius: 22px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 22px 60px rgba(15, 23, 42, 0.12);
    text-align: center;
}

.mobile-editor-guard-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 22px;
    background: #e8f1ff;
    color: #2563eb;
    font-size: 1.8rem;
}

.mobile-editor-guard-kicker {
    margin: 0 0 0.35rem;
    color: #2563eb;
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.mobile-editor-guard-card h1 {
    margin: 0 0 0.7rem;
    font-size: 1.45rem;
}

.mobile-editor-guard-card p {
    margin: 0;
    color: #667085;
    line-height: 1.75;
}

.mobile-editor-guard-back {
    min-height: 42px;
    margin-top: 1.2rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    border: 0;
    border-radius: 999px;
    padding: 0 1rem;
    background: #111827;
    color: #fff;
    font: inherit;
    font-weight: 800;
}

/* 等级标签 */
.level-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.08rem 0.52rem 0.08rem 0.44rem;
    border-left: 3px solid #94a3b8;
    border-radius: 4px;
    background: #f8fafc;
    color: #334155;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.5;
    white-space: nowrap;
}

.level-tag-dot {
    width: 7px;
    height: 7px;
    margin-right: 0.35rem;
    border-radius: 50%;
    background: var(--level-color, #94a3b8);
    flex-shrink: 0;
}

/* Admin mobile list-first layout */
@media (max-width: 768px) {
    body:not(.login-page):not(.admin-login-page) {
        font-size: 14px;
    }

    :where(
        .user-shell,
        .article-shell,
        .question-shell,
        .course-shell,
        .category-shell,
        .taxonomy-shell,
        .partner-shell,
        .product-shell,
        .commission-shell,
        .order-shell,
        .level-shell,
        .export-shell,
        .video-shell,
        .log-shell
    ) {
        padding: 0.65rem !important;
    }

    :where(
        .filter-bar,
        .article-filter-bar,
        .taxonomy-toolbar,
        .partner-toolbar,
        .product-toolbar,
        .commission-toolbar,
        .order-toolbar,
        .level-toolbar,
        .exam-toolbar,
        .log-toolbar,
        .export-toolbar
    ) {
        gap: 0.5rem !important;
        padding: 0.65rem !important;
        margin-bottom: 0.7rem !important;
        border-radius: 12px !important;
        overflow-x: visible !important;
    }

    :where(.filter-tools, .toolbar-tools, .filter-actions, .toolbar-actions, .export-toolbar-actions) {
        gap: 0.45rem !important;
    }

    :where(.filter-item, .toolbar-search, .date-range) {
        min-width: 0 !important;
    }

    :where(
        .filter-item input,
        .filter-item select,
        .toolbar-search input,
        .toolbar-search select,
        .date-range input,
        .commission-toolbar input,
        .commission-toolbar select,
        .order-toolbar input,
        .order-toolbar select,
        .partner-toolbar input,
        .product-toolbar input,
        .product-toolbar select,
        .level-toolbar input,
        .level-toolbar select,
        .log-toolbar select,
        .filter-bar select,
        .filter-bar input
    ) {
        height: 38px !important;
        min-width: 0 !important;
        padding: 0 0.65rem !important;
        border-radius: 10px !important;
        font-size: 0.88rem !important;
    }

    :where(
        .filter-actions,
        .toolbar-actions,
        .toolbar-tools,
        .export-toolbar-actions,
        .article-filter-bar .filter-actions,
        .taxonomy-toolbar,
        .partner-toolbar,
        .product-toolbar,
        .order-toolbar,
        .commission-toolbar,
        .level-toolbar,
        .exam-toolbar,
        .log-toolbar
    ) :where(button, a):has(i) {
        width: 38px !important;
        min-width: 38px !important;
        height: 38px !important;
        padding: 0 !important;
        border-radius: 10px !important;
        flex: 0 0 38px !important;
    }

    :where(
        .filter-actions,
        .toolbar-actions,
        .toolbar-tools,
        .export-toolbar-actions,
        .article-filter-bar .filter-actions,
        .taxonomy-toolbar,
        .partner-toolbar,
        .product-toolbar,
        .order-toolbar,
        .commission-toolbar,
        .level-toolbar,
        .exam-toolbar,
        .log-toolbar
    ) :where(button, a):has(i) span {
        display: none !important;
    }

    :where(.search-btn, .ghost-btn, .create-btn, .primary-btn, .secondary-btn) i {
        margin: 0 !important;
    }

    :where(.table-card, .article-card, .commission-card, .order-card, .partner-card, .product-card, .level-card, .export-table-card) {
        border-radius: 12px !important;
        box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05) !important;
    }

    :where(.table-head, .article-card-head, .commission-card-head, .order-card-head, .partner-card-head, .product-card-head, .level-card-head) {
        padding: 0.7rem 0.85rem !important;
        font-size: 0.86rem !important;
    }

    :where(.table-wrap, .article-table-wrap, .taxonomy-table-wrap, .partner-table-wrap, .product-table-wrap, .commission-table-wrap, .order-table-wrap, .level-table-wrap, .email-table-wrap, .export-table-wrap) {
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
    }

    :where(.data-table, .article-table, .taxonomy-table, .partner-table, .product-table, .commission-table, .order-table, .level-table, .email-table, .export-table) {
        min-width: 720px !important;
    }

    :where(.data-table, .article-table, .taxonomy-table, .partner-table, .product-table, .commission-table, .order-table, .level-table, .email-table, .export-table) th,
    :where(.data-table, .article-table, .taxonomy-table, .partner-table, .product-table, .commission-table, .order-table, .level-table, .email-table, .export-table) td {
        padding: 0.62rem 0.72rem !important;
        font-size: 0.84rem !important;
    }

    :where(
        .article-mobile-card,
        .question-mobile-card,
        .course-mobile-card,
        .category-mobile-card,
        .partner-mobile-card,
        .product-mobile-card,
        .commission-mobile-card,
        .order-mobile-card,
        .level-mobile-card,
        .user-mobile-card,
        .email-mobile-card,
        .export-mobile-card,
        .asset-mobile-card
    ) {
        border-radius: 12px !important;
        padding: 0.8rem !important;
        margin-bottom: 0.65rem !important;
        box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05) !important;
    }

    :where(
        .article-mobile-meta,
        .question-mobile-meta,
        .course-mobile-meta,
        .partner-mobile-meta,
        .product-mobile-meta,
        .commission-mobile-meta,
        .order-mobile-card .mobile-meta,
        .level-mobile-meta,
        .user-mobile-meta,
        .export-mobile-card
    ) {
        gap: 0.45rem !important;
        padding: 0.65rem !important;
        border-radius: 10px !important;
    }

    :where(.pagination-bar, .table-foot) {
        padding: 0.65rem !important;
        gap: 0.45rem !important;
        justify-content: center !important;
        flex-wrap: wrap !important;
    }

    :where(.pagination-bar button, .table-foot button) {
        min-height: 34px !important;
        padding: 0.35rem 0.65rem !important;
        border-radius: 9px !important;
        font-size: 0.82rem !important;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .features-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }
}