/* ========================================
   Shotcut 教程页面专用样式
   ======================================== */

/* ---- Tutorial Page Layout ---- */
.tutorial-page {
    min-height: 100vh;
    padding-top: 64px;
    background: var(--bg-primary);
}

.tutorial-container,
.tutorial-grid {
    display: grid;
    grid-template-columns: 260px 1fr;
    max-width: 1100px;
    margin: 0 auto;
    min-height: calc(100vh - 64px);
}

/* ---- Sidebar ---- */
.tutorial-sidebar {
    position: sticky;
    top: 64px;
    height: calc(100vh - 64px);
    overflow-y: auto;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-primary);
    padding: 24px 0;
}

.sidebar-header {
    padding: 0 20px 16px;
    border-bottom: 1px solid var(--border-primary);
    margin-bottom: 12px;
}

.sidebar-header h3 {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 0 12px;
}

.sidebar-link {
    display: block;
    padding: 10px 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.sidebar-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: var(--accent-light);
    color: var(--accent);
    font-weight: 600;
}

.sidebar-link::before {
    content: '›';
    margin-right: 8px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.sidebar-link:hover::before {
    opacity: 1;
}

/* ---- Main Content ---- */
.tutorial-content {
    padding: 40px 48px;
}
.tutorial-content.wide {
    padding: 40px 48px;
}

.content-header {
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-primary);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.813rem;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

.breadcrumb a {
    color: var(--text-tertiary);
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    color: var(--accent);
}

.content-header h1 {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.content-header .lead {
    font-size: 1.063rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ---- Table of Contents ---- */
.toc {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 32px;
}

.toc h2 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 16px;
    padding: 0;
    border: none;
    color: var(--text-primary);
}

.toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toc li {
    margin: 0;
}

.toc a {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    padding: 6px 0;
    transition: all var(--transition-fast);
}

.toc a::before {
    content: '#';
    color: var(--accent);
    opacity: 0.6;
}

.toc a:hover {
    color: var(--accent);
    transform: translateX(4px);
}

/* ---- Step Cards ---- */
.step-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin: 20px 0;
}

.step-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 16px;
    color: var(--text-primary);
}

.step-card ol, .step-card ul {
    margin: 0;
    padding-left: 20px;
}

.step-card li {
    margin-bottom: 10px;
}

/* ---- Notes ---- */
.note {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    line-height: 1.7;
    margin: 16px 0;
}

.note-tip {
    background: rgba(0, 200, 83, 0.1);
    border: 1px solid rgba(0, 200, 83, 0.2);
    color: #008838;
}

.note-warning {
    background: rgba(255, 167, 38, 0.1);
    border: 1px solid rgba(255, 167, 38, 0.2);
    color: #e65100;
}

.note-info {
    background: rgba(33, 150, 243, 0.1);
    border: 1px solid rgba(33, 150, 243, 0.2);
    color: #1565c0;
}

.note strong {
    display: block;
    margin-bottom: 4px;
}

[data-theme="dark"] .note-tip { color: #69f0ae; }
[data-theme="dark"] .note-warning { color: #ffb74d; }
[data-theme="dark"] .note-info { color: #64b5f6; }

/* ---- Data Tables ---- */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 0.875rem;
}

.data-table th,
.data-table td {
    padding: 12px 16px;
    text-align: left;
    border: 1px solid var(--border-primary);
}

.data-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
}

.data-table td {
    color: var(--text-secondary);
}

.data-table tr:hover td {
    background: var(--bg-tertiary);
}

/* ---- Next Section ---- */
.next-section {
    margin-top: 56px;
    padding-top: 32px;
    border-top: 1px solid var(--border-primary);
}

.next-section h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.next-section p {
    color: var(--text-tertiary);
    margin-bottom: 16px;
}

.next-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.next-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.938rem;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.next-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.next-icon {
    color: var(--accent);
    transition: transform var(--transition-fast);
}

.next-link:hover .next-icon {
    transform: translateX(4px);
}

/* ---- Keyboard Shortcuts ---- */
.shortcut-group {
    margin: 24px 0;
}

.shortcut-group h4 {
    font-family: var(--font-display);
    font-size: 0.938rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.shortcut-table {
    width: 100%;
    border-collapse: collapse;
}

.shortcut-table th,
.shortcut-table td {
    padding: 10px 16px;
    text-align: left;
    border: 1px solid var(--border-primary);
    font-size: 0.875rem;
}

.shortcut-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
    width: 40%;
}

.shortcut-table td {
    color: var(--text-secondary);
    font-family: 'SF Mono', Consolas, monospace;
}

kbd {
    display: inline-block;
    padding: 3px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-secondary);
    border-radius: 4px;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    margin: 0 2px;
}

/* ---- Comparison ---- */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin: 24px 0;
}

.comparison-item {
    padding: 20px;
    border-radius: var(--radius-md);
}

.comparison-pros {
    background: rgba(0, 200, 83, 0.08);
    border: 1px solid rgba(0, 200, 83, 0.2);
}

.comparison-cons {
    background: rgba(244, 67, 54, 0.08);
    border: 1px solid rgba(244, 67, 54, 0.2);
}

.comparison-item h4 {
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.comparison-pros h4 { color: #2e7d32; }
.comparison-cons h4 { color: #c62828; }

/* ---- FAQ ---- */
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-question {
    padding: 20px 24px;
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background var(--transition-fast);
}

.faq-question:hover {
    background: var(--bg-tertiary);
}

.faq-question::after {
    content: '+';
    font-size: 1.25rem;
    color: var(--accent);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

/* ---- Quick Tips ---- */
.tip-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 16px;
    margin: 24px 0;
}

.tip-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    gap: 16px;
}

.tip-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
    font-size: 1.25rem;
}

.tip-content h4 {
    font-size: 0.938rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}

.tip-content p {
    font-size: 0.813rem;
    color: var(--text-tertiary);
    margin: 0;
    line-height: 1.6;
}

/* ---- Search Box ---- */
.search-box {
    position: relative;
    margin-bottom: 24px;
}

.search-input {
    width: 100%;
    padding: 12px 16px 12px 44px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: 0.938rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.search-input::placeholder {
    color: var(--text-tertiary);
}

.search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .tutorial-container,
    .tutorial-grid {
        grid-template-columns: 1fr;
    }

    .tutorial-sidebar {
        position: relative;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border-primary);
        padding: 16px 0;
    }

    .sidebar-nav {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 8px;
        padding: 0 16px;
    }

    .sidebar-link {
        padding: 8px 14px;
        font-size: 0.813rem;
        background: var(--bg-tertiary);
    }

    .sidebar-link::before {
        display: none;
    }

    .tutorial-content {
        padding: 32px 24px;
    }
}

@media (max-width: 768px) {
    .tutorial-content {
        padding: 24px 16px;
    }

    .content-header h1 {
        font-size: 1.75rem;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
    }

    .next-links {
        flex-direction: column;
    }

    .next-link {
        width: 100%;
        justify-content: center;
    }
}

/* ========================================
   教程重构 — 新增组件样式
   ======================================== */

/* ---- 场景痛点卡片 (Scene Card) ---- */
.scene-card {
    background: linear-gradient(135deg, #fff8e1, #fff3e0);
    border: 1px solid #ffe0b2;
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    margin-bottom: 32px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
[data-theme="dark"] .scene-card {
    background: linear-gradient(135deg, #2a2010, #2a1a0a);
    border-color: #4a3520;
}
.scene-icon {
    font-size: 2.5rem;
    flex-shrink: 0;
    line-height: 1;
}
.scene-text h2 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    color: #e65100;
    margin: 0 0 8px;
}
[data-theme="dark"] .scene-text h2 { color: #ffb74d; }
.scene-text p {
    font-size: 0.938rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.7;
}

/* ---- 信任标记 (Trust Badge) ---- */
.trust-badges {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 16px 0 24px;
}
.trust-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.813rem;
    font-weight: 600;
}
.trust-badge.safety {
    background: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #c8e6c9;
}
.trust-badge.privacy {
    background: #e3f2fd;
    color: #1565c0;
    border: 1px solid #bbdefb;
}
.trust-badge.offline {
    background: #fce4ec;
    color: #c62828;
    border: 1px solid #f8bbd0;
}
[data-theme="dark"] .trust-badge.safety { background: #0a2a16; border-color: #1a4a28; color: #69f0ae; }
[data-theme="dark"] .trust-badge.privacy { background: #0a1a2a; border-color: #1a3060; color: #64b5f6; }
[data-theme="dark"] .trust-badge.offline { background: #2a0a0a; border-color: #4a1a1a; color: #ef9a9a; }

/* ---- 为什么有效 (Why It Works) ---- */
.why-works {
    background: var(--bg-tertiary);
    border-left: 4px solid var(--accent);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: 20px 24px;
    margin: 24px 0;
}
.why-works h3 {
    font-family: var(--font-display);
    font-size: 0.938rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0 0 8px;
}
.why-works p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.7;
}

/* ---- 避坑指南 (Pitfall Guide) ---- */
.pitfall-card {
    background: rgba(255, 167, 38, 0.06);
    border: 1px solid rgba(255, 167, 38, 0.2);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin: 24px 0;
}
.pitfall-card h3 {
    font-family: var(--font-display);
    font-size: 0.938rem;
    font-weight: 700;
    color: #e65100;
    margin: 0 0 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
[data-theme="dark"] .pitfall-card h3 { color: #ffb74d; }
.pitfall-card ul {
    margin: 0;
    padding-left: 20px;
}
.pitfall-card li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    line-height: 1.6;
}
.pitfall-card li::marker { content: '✗ '; color: #e65100; }

/* ---- 步骤截图框 (Step Screenshot) ---- */
.step-visual {
    margin: 24px 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-md);
    background: var(--bg-tertiary);
}
.step-visual img {
    display: block;
    width: 100%;
    height: auto;
}
.step-visual .caption {
    padding: 10px 16px;
    font-size: 0.813rem;
    color: var(--text-tertiary);
    background: var(--bg-card);
    border-top: 1px solid var(--border-primary);
}
.step-visual .caption .marker {
    display: inline-block;
    background: #ff1744;
    color: #fff;
    padding: 2px 8px;
    border-radius: 3px;
    font-size: 0.75rem;
    font-weight: 700;
    margin-right: 8px;
}
.step-placeholder {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

/* ---- 一键复制代码块 (Copy Code) ---- */
.copy-code-block {
    position: relative;
    background: var(--bg-code);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    margin: 16px 0;
}
.copy-code-block pre {
    padding: 16px 48px 16px 16px;
    margin: 0;
    font-family: 'SF Mono', Consolas, 'Liberation Mono', monospace;
    font-size: 0.875rem;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
}
.copy-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 6px 12px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.copy-btn:hover {
    background: var(--accent-dark);
    transform: scale(1.05);
}
.copy-btn.copied {
    background: #2e7d32;
}

/* ---- 悬浮CTA按钮 (Sticky CTA) ---- */
.sticky-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--bg-nav);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--border-primary);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    transform: translateY(100%);
    transition: transform var(--transition-base);
}
.sticky-cta.visible {
    transform: translateY(0);
}
.sticky-cta .cta-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}
.sticky-cta .btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.938rem;
    font-weight: 700;
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 4px 16px rgba(0, 200, 83, 0.3);
    white-space: nowrap;
}
.sticky-cta .btn-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 200, 83, 0.4);
}
.sticky-cta .btn-cta svg {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-fast);
}
.sticky-cta .btn-cta:hover svg {
    transform: translateX(3px);
}

/* ---- 内联CTA (Inline CTA) ---- */
.inline-cta {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--accent-light);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 200, 83, 0.2);
    margin: 20px 0;
}
.inline-cta span {
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 500;
}
.inline-cta a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 0.813rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    transition: all var(--transition-fast);
}
.inline-cta a:hover {
    background: var(--accent-dark);
    transform: scale(1.03);
}

/* ---- 完成确认 (Success Feedback) ---- */
.success-feedback {
    background: linear-gradient(135deg, #e8f5e9, #f1f8e9);
    border: 2px solid #66bb6a;
    border-radius: var(--radius-lg);
    padding: 24px 28px;
    margin: 32px 0;
    text-align: center;
}
[data-theme="dark"] .success-feedback {
    background: linear-gradient(135deg, #0a2a16, #0a2a0a);
    border-color: #2e7d32;
}
.success-feedback .check-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}
.success-feedback h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    color: #2e7d32;
    margin: 0 0 8px;
}
[data-theme="dark"] .success-feedback h3 { color: #66bb6a; }
.success-feedback p {
    font-size: 0.938rem;
    color: var(--text-secondary);
    margin: 0 0 16px;
}
.success-feedback .btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--gradient-primary);
    color: #fff;
    border-radius: var(--radius-md);
    font-weight: 700;
    text-decoration: none;
}

/* ---- 对比展示 (Before/After) ---- */
.before-after {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 16px;
    align-items: center;
    margin: 24px 0;
}
.before-after .ba-arrow {
    font-size: 2rem;
    color: var(--accent);
    font-weight: 700;
}
.ba-box {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-primary);
    box-shadow: var(--shadow-sm);
}
.ba-box .ba-label {
    padding: 8px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-align: center;
}
.ba-box.before .ba-label {
    background: #ffebee;
    color: #c62828;
}
.ba-box.after .ba-label {
    background: #e8f5e9;
    color: #2e7d32;
}
.ba-box img {
    display: block;
    width: 100%;
}
@media (max-width: 640px) {
    .before-after {
        grid-template-columns: 1fr;
    }
    .before-after .ba-arrow {
        transform: rotate(90deg);
        text-align: center;
    }
}

/* ---- 快速决策面板 (Quick Decide) ---- */
.quick-decide {
    margin: 32px 0;
}
.quick-decide h2 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 8px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--accent-light);
}
.quick-decide-desc {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin: 0 0 20px;
}
.decide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 14px;
}
.decide-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
}
.decide-card:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.decide-emoji {
    font-size: 1.75rem;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-light);
    border-radius: var(--radius-sm);
}
.decide-body h3 {
    font-size: 0.938rem;
    font-weight: 700;
    margin: 0 0 4px;
    color: var(--text-primary);
    line-height: 1.3;
}
.decide-body p {
    font-size: 0.813rem;
    color: var(--text-tertiary);
    margin: 0;
    line-height: 1.5;
}
@media (max-width: 480px) {
    .decide-grid {
        grid-template-columns: 1fr;
    }
}

/* ---- 响应式 — 新增组件 ---- */
@media (max-width: 768px) {
    .scene-card {
        flex-direction: column;
        padding: 20px;
    }
    .trust-badges {
        flex-direction: column;
        gap: 8px;
    }
    .trust-badge {
        justify-content: center;
    }
    .sticky-cta {
        flex-direction: column;
        gap: 8px;
        padding: 10px 16px;
    }
    .sticky-cta .btn-cta {
        width: 100%;
        justify-content: center;
    }
    .inline-cta {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .content-header h1 {
        font-size: 1.5rem;
    }

    .step-card {
        padding: 16px;
    }

    .data-table {
        font-size: 0.813rem;
    }

    .data-table th,
    .data-table td {
        padding: 8px 10px;
    }

    .scene-card .scene-text h2 {
        font-size: 1rem;
    }

    .success-feedback {
        padding: 16px;
    }
}

/* ========================================
   教程目录页 — 枢纽组件
   ======================================== */

/* ---- Section 标题 ---- */
.section-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--text-primary);
    margin: 0 0 6px;
}
.section-desc {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin: 0 0 24px;
}

/* ---- 卡片分区 ---- */
.card-section {
    margin: 48px 0;
    padding-top: 32px;
    border-top: 1px solid var(--border-primary);
}
.card-section:first-of-type {
    border-top: none;
    padding-top: 0;
    margin-top: 0;
}

/* ---- 学习路径流程 (Flow) ---- */
.flow-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: 28px 32px;
    margin-bottom: 48px;
    text-align: center;
}
.flow-section .section-title {
    text-align: center;
}
.flow-section .section-desc {
    text-align: center;
    margin-bottom: 24px;
}
.flow-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    flex-wrap: wrap;
}
.flow-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-base);
    min-width: 180px;
}
.flow-item:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.flow-num {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 800;
    flex-shrink: 0;
}
.flow-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}
.flow-body {
    text-align: left;
    line-height: 1.4;
}
.flow-body strong {
    display: block;
    font-size: 0.875rem;
    color: var(--text-primary);
    margin-bottom: 2px;
}
.flow-body span {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}
.flow-arrow {
    font-size: 1.5rem;
    color: var(--accent);
    font-weight: 700;
    margin: 0 4px;
    flex-shrink: 0;
}
.flow-done {
    opacity: 0.6;
    cursor: default;
}
.flow-done:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border-primary);
}
.flow-done .flow-num {
    background: #66bb6a;
}

/* ---- Page Title ---- */
.page-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: -0.02em;
    margin: 0 0 12px;
}

/* ---- Tutorial Nav (prev/next) ---- */
.tutorial-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}
.tutorial-nav-link:hover {
    border-color: var(--accent);
    background: var(--accent-light);
}
.tutorial-nav-link.prev::before { content: '← '; }
.tutorial-nav-link.next::after { content: ' →'; }

/* ---- Page Header ---- */
.page-header {
    padding: 48px 24px 32px;
    background: var(--gradient-bg);
    text-align: center;
    border-bottom: 1px solid var(--border-primary);
}
.page-header .breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 0.813rem;
    color: var(--text-tertiary);
    margin-bottom: 16px;
}
.page-header .breadcrumb a {
    color: var(--accent);
    text-decoration: none;
}
.page-header .breadcrumb span {
    color: var(--text-tertiary);
}
.page-header .header-bg {
    display: none;
}
.page-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ---- CTA Banner ---- */
.cta-banner {
    margin: 48px 0 24px;
    padding: 28px 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}
.cta-banner-text {
    color: #fff;
}
.cta-banner-text strong {
    display: block;
    font-size: 1.125rem;
    margin-bottom: 4px;
}
.cta-banner-text span {
    font-size: 0.875rem;
    opacity: 0.9;
}
.cta-banner .btn {
    white-space: nowrap;
    font-size: 1rem;
    padding: 14px 32px;
    background: #fff;
    color: var(--accent-dark);
    border-radius: var(--radius-md);
    font-weight: 700;
    text-decoration: none;
    transition: all var(--transition-base);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}
.cta-banner .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0,0,0,0.25);
}

/* ---- 枢纽页响应式 ---- */
@media (max-width: 768px) {
    .flow-row {
        flex-direction: column;
        gap: 12px;
    }
    .flow-arrow {
        transform: rotate(90deg);
        margin: 0;
    }
    .flow-item {
        width: 100%;
        min-width: 0;
    }
    .cta-banner {
        flex-direction: column;
        text-align: center;
        padding: 24px 20px;
    }
    .cta-banner .btn {
        width: 100%;
        text-align: center;
    }
}