/*
 * Quest2Do.com - 转化型落地页样式
 * 精简版 v2.0
 */

/* ========== CSS Reset and Base ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Primary Colors */
    --primary-blue: #007AFF;
    --primary-blue-light: #5AC8FA;
    --primary-blue-dark: #0051D5;

    /* Secondary Colors */
    --success-green: #34C759;
    --warning-orange: #FF9500;
    --error-red: #FF3B30;

    /* Neutral Colors */
    --text-primary: #1D1D1F;
    --text-secondary: #86868B;
    --text-tertiary: #86868B80;
    --background-primary: #FFFFFF;
    --background-secondary: #F5F5F7;
    --background-tertiary: #EBEBED;
    --border-color: #D2D2D7;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 0.15s ease-out;
    --transition-normal: 0.3s ease-out;

    /* Showcase Tag Colors */
    --tag-scenario-bg: #EEF2FF;
    --tag-scenario-color: #4338CA;
    --tag-role-bg: #FEF3C7;
    --tag-role-color: #92400E;
    --tag-feature-bg: #ECFDF5;
    --tag-feature-color: #065F46;

    /* Subtle Background Gradient */
    --gradient-subtle-start: #f8fafc;
    --gradient-subtle-end: #e2e8f0;

    /* Form Focus Ring Colors */
    --focus-ring-color: rgba(0, 122, 255, 0.15);
    --focus-ring-error-color: rgba(255, 59, 48, 0.15);
}

/* ========== Accessibility ========== */
:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
    border-radius: 2px;
}

:focus:not(:focus-visible) {
    outline: none;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-primary);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

a {
    color: var(--primary-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-blue-dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    min-height: 48px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

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

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

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.btn-subtext {
    font-size: 0.75rem;
    opacity: 0.8;
    margin-top: 4px;
}

.btn-xlarge {
    padding: 20px 48px;
    font-size: 1.25rem;
}

/* ========== Navigation ========== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-color);
}

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

.nav-logo {
    display: flex;
    align-items: center;
}

.nav-logo a {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

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

.nav-link {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-fast);
}

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

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

.nav-cta-btn {
    display: inline-block;
    padding: 8px 20px;
    background: var(--primary-blue);
    color: white;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: 0.9375rem;
    transition: all var(--transition-fast);
}

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

.nav-language-switcher {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-lang-link {
    color: var(--text-secondary);
    font-size: 14px;
    padding: 4px 8px;
}

.nav-lang-link.active {
    color: var(--primary-blue);
    font-weight: var(--font-weight-semibold);
}

.nav-lang-divider {
    color: var(--text-tertiary);
}

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* ========== Section Common ========== */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 700px;
    margin: 0 auto;
}

.section-title {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

/* ========== Hero Section ========== */
.hero-conversion {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--gradient-subtle-start) 0%, var(--gradient-subtle-end) 100%);
}

.hero-conversion .hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero-pain-point {
    font-size: 1.25rem;
    color: var(--error-red);
    margin-bottom: 16px;
    font-weight: var(--font-weight-medium);
}

.hero-conversion .hero-title {
    font-size: 2.5rem;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: 24px;
    font-weight: var(--font-weight-bold);
}

.hero-value-points {
    list-style: none;
    padding: 0;
    margin: 0 0 32px 0;
}

.hero-value-points li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 0;
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.hero-value-points .check-icon {
    color: var(--success-green);
    font-weight: bold;
    font-size: 1.25rem;
}

.hero-conversion .hero-cta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
}

.hero-conversion .app-showcase {
    display: flex;
    justify-content: center;
}

.hero-conversion .app-screenshot {
    max-width: 300px;
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
}

/* Hero Screenshot Gallery - 预留截图展示位置 */
.hero-screenshots {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-screenshot-item {
    width: 200px;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-normal);
}

.hero-screenshot-item:hover {
    transform: scale(1.05);
}

/* ========== Contrast Section ========== */
.contrast-section {
    padding: 100px 0;
    background: var(--background-primary);
}

.contrast-title {
    text-align: center;
    margin-bottom: 60px;
}

.contrast-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 40px;
    align-items: stretch;
    max-width: 1000px;
    margin: 0 auto;
}

.contrast-card {
    padding: 32px;
    border-radius: var(--radius-lg);
}

.contrast-without {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border: 1px solid #fecaca;
}

.contrast-with {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border: 1px solid #bbf7d0;
}

.contrast-card-title {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.25rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.contrast-icon {
    font-size: 1.5rem;
}

.contrast-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.contrast-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.contrast-list li:last-child {
    border-bottom: none;
}

.point-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.point-text {
    color: var(--text-secondary);
    line-height: 1.5;
}

.contrast-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
}

.arrow-icon {
    font-size: 2rem;
    color: var(--primary-blue);
    font-weight: bold;
}

/* ========== Core Value Section ========== */
.core-value-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--background-secondary) 0%, var(--background-primary) 100%);
}

.value-cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.value-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.value-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.value-card-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.value-card-title {
    font-size: 1.375rem;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.value-card-subtitle {
    font-size: 0.9375rem;
    color: var(--text-tertiary);
    margin-bottom: 20px;
}

.value-card-benefits {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
}

.value-card-benefits li {
    padding: 8px 0;
    color: var(--text-secondary);
    padding-left: 24px;
    position: relative;
}

.value-card-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success-green);
    font-weight: bold;
}

.value-card-proof {
    padding: 12px 16px;
    background: var(--background-secondary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--primary-blue);
    font-weight: var(--font-weight-medium);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Value Card Screenshot - 预留截图位置 */
.value-card-screenshot {
    width: 100%;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.value-card-screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* ========== Demo Section ========== */
.demo-section {
    padding: 100px 0;
    background: var(--background-primary);
}

.demo-timeline {
    max-width: 900px;
    margin: 0 auto 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px 48px;
}

.demo-scene {
    background: white;
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    position: relative;
}

.scene-time {
    font-size: 0.875rem;
    color: var(--primary-blue);
    font-weight: var(--font-weight-semibold);
    margin-bottom: 8px;
}

.scene-title {
    font-size: 1.125rem;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.scene-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.scene-highlight {
    display: inline-block;
    padding: 4px 12px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
    color: white;
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: var(--font-weight-medium);
}

/* Demo Scene Screenshot */
.scene-screenshot {
    width: 100%;
    border-radius: var(--radius-md);
    margin-top: 16px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.scene-screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

.demo-cta {
    text-align: center;
}

.demo-cta-text {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* Demo Video Section - 预留视频位置 */
.demo-video-container {
    max-width: 800px;
    margin: 0 auto 60px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.demo-video {
    width: 100%;
    aspect-ratio: 16/9;
    background: var(--text-primary);
}

/* ========== Testimonials Section ========== */
.testimonials-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--gradient-subtle-start) 0%, var(--gradient-subtle-end) 100%);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.testimonial-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    font-size: 2.5rem;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.author-role {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* ========== Homepage Featured Sections (Showcase + Blog) ========== */
.homepage-featured-section {
    padding: 100px 0;
    background: var(--background-primary);
}

.homepage-featured-blog {
    background: linear-gradient(135deg, var(--gradient-subtle-start) 0%, var(--gradient-subtle-end) 100%);
}

.homepage-featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.homepage-featured-footer {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ========== FAQ Section ========== */
.faq-section {
    padding: 100px 0;
    background: var(--background-primary);
}

.faq-section .section-title {
    text-align: center;
    margin-bottom: 60px;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
}

.question-text {
    font-size: 1.125rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-blue);
    transition: transform var(--transition-normal);
}

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

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

.faq-item.active .faq-answer {
    max-height: 500px;
    padding-bottom: 24px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========== FAQ Page ========== */
.faq-page-hero {
    padding: 80px 0 60px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: #fff;
    text-align: center;
}

.faq-page-hero h1 {
    font-family: var(--font-family);
    font-size: 2.2rem;
    font-style: normal;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.faq-page-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.faq-page-content {
    padding: var(--spacing-xxl) 0 100px;
    background: var(--background-primary);
}

.faq-page-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-page-category {
    margin-bottom: var(--spacing-xxl);
}

.faq-page-category:last-child {
    margin-bottom: 0;
}

.faq-page-category-title {
    font-size: 1.4rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--primary-blue);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.faq-page-category-icon {
    font-size: 1.3rem;
}

@media (max-width: 768px) {
    .faq-page-hero {
        padding: 60px 0 40px;
    }

    .faq-page-hero h1 {
        font-size: 1.6rem;
    }

    .faq-page-content {
        padding: var(--spacing-xl) 0 var(--spacing-xxl);
    }

    .faq-page-category-title {
        font-size: 1.2rem;
    }
}

/* ========== Pricing Section ========== */
.pricing-section-new {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--background-secondary) 0%, var(--background-primary) 100%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    max-width: 900px;
    margin: 0 auto 40px;
}

.pricing-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
}

.pricing-pro {
    border: 2px solid var(--primary-blue);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
    color: white;
    padding: 6px 20px;
    border-radius: var(--radius-xl);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
}

.pricing-name {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.pricing-price {
    margin-bottom: 8px;
}

.price-amount {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.price-period {
    font-size: 1rem;
    color: var(--text-tertiary);
}

.pricing-yearly {
    margin-bottom: 16px;
}

.yearly-price {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.yearly-save {
    display: block;
    font-size: 0.875rem;
    color: var(--success-green);
    font-weight: var(--font-weight-medium);
}

.pricing-description {
    color: var(--text-tertiary);
    margin-bottom: 24px;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 32px 0;
    text-align: left;
}

.pricing-features li {
    padding: 10px 0;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature-check {
    color: var(--success-green);
    font-weight: bold;
}

.pricing-btn {
    width: 100%;
    justify-content: center;
    margin-bottom: 12px;
}

.pricing-note {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.pricing-anchor {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* ========== Final CTA Section ========== */
.final-cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, #1d4ed8 100%);
    text-align: center;
    color: white;
}

.final-cta-title {
    font-size: 2.5rem;
    margin-bottom: 16px;
    color: white;
}

.final-cta-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.final-cta-section .btn-primary {
    background: white;
    color: var(--primary-blue);
    margin-bottom: 32px;
}

.final-cta-section .btn-primary:hover {
    background: #f8fafc;
}

.final-cta-platforms {
    font-size: 1rem;
    opacity: 0.9;
    margin-bottom: 8px;
}

.final-cta-note {
    font-size: 0.9375rem;
    opacity: 0.8;
    margin-bottom: 8px;
}

.final-cta-requirements {
    font-size: 0.875rem;
    opacity: 0.7;
}

/* ========== Footer ========== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 24px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.footer-logo-img {
    width: 36px;
    height: 36px;
    border-radius: 8px;
}

.footer-logo-text {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
}

.footer-tagline {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9375rem;
}

.footer-links-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
}

.footer-links-column h4 {
    color: white;
    font-size: 0.9375rem;
    margin-bottom: 16px;
}

.footer-links-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links-column li {
    padding: 6px 0;
}

.footer-links-column a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-links-column a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
}

.copyright {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* ========== Breadcrumb (Shared) ========== */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.breadcrumb a {
    color: var(--text-secondary);
}

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

.breadcrumb-separator {
    color: var(--text-tertiary);
    margin: 0 8px;
}

/* ========== Related Cross-Section Blocks (Shared: Blog + Showcase) ========== */
/* Used for: blog-related-posts, blog-related-cases, showcase-related-tutorials, showcase-related-cases */
.blog-related-posts,
.blog-related-cases,
.showcase-related-cases,
.showcase-related-tutorials {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-xl);
}

.blog-related-posts h2,
.blog-related-cases h2,
.showcase-related-cases h2,
.showcase-related-tutorials h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
}

/* ========== Showcase Detail Page ========== */
.showcase-detail {
    padding-top: 100px;
    padding-bottom: var(--spacing-xxl);
}

.showcase-detail .container {
    max-width: 800px;
}

/* Header */
.showcase-detail-header {
    margin-bottom: var(--spacing-xl);
}

.showcase-user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.showcase-user-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: var(--shadow-sm);
}

.showcase-user-avatar-placeholder {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
}

.showcase-user-text {
    display: flex;
    flex-direction: column;
}

.showcase-user-name {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    font-size: 1rem;
}

.showcase-user-meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.showcase-detail-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

/* Tags */
.showcase-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.showcase-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: var(--radius-xl);
    font-size: 0.8125rem;
    font-weight: var(--font-weight-medium);
}

.showcase-tag-scenario {
    background: var(--tag-scenario-bg);
    color: var(--tag-scenario-color);
}

.showcase-tag-role {
    background: var(--tag-role-bg);
    color: var(--tag-role-color);
}

.showcase-tag-feature {
    background: var(--tag-feature-bg);
    color: var(--tag-feature-color);
}

/* Metrics Bar */
.showcase-metrics-bar {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--background-secondary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
}

.showcase-metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    text-align: center;
}

.showcase-metric-value {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    line-height: 1.2;
}

.showcase-metric-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ========== Shared Content Body Typography ========== */
/* 博客文章和案例详情共享的内容排版样式 */
.content-body {
    line-height: 1.8;
    color: var(--text-primary);
}

.content-body h2 {
    font-size: 1.5rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.content-body h3 {
    font-size: 1.25rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-xs);
}

.content-body p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.content-body ul,
.content-body ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
}

.content-body li {
    margin-bottom: var(--spacing-xs);
}

.content-body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    margin: var(--spacing-lg) 0;
}

.content-body blockquote {
    border-left: 3px solid var(--primary-blue);
    padding-left: var(--spacing-md);
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-style: italic;
}

/* Story Content (Showcase-specific overrides) */
.showcase-story-content {
    margin-bottom: var(--spacing-xl);
}

/* Quote Block */
.showcase-quote-block {
    position: relative;
    background: linear-gradient(135deg, var(--gradient-subtle-start), var(--gradient-subtle-end));
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    border: none;
    font-style: normal;
}

.showcase-quote-mark {
    position: absolute;
    top: -8px;
    left: var(--spacing-lg);
    font-size: 4rem;
    line-height: 1;
    color: var(--primary-blue);
    opacity: 0.3;
    font-family: Georgia, serif;
}

.showcase-quote-block p {
    font-size: 1.25rem;
    line-height: 1.6;
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
}

.showcase-quote-block cite {
    display: block;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-style: normal;
}

/* Related Features */
.showcase-related-features {
    margin-bottom: var(--spacing-xl);
}

.showcase-related-features h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
}

.showcase-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
}

.showcase-feature-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background: var(--background-secondary);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
}

.showcase-feature-card:hover {
    background: var(--background-primary);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.showcase-feature-name {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    font-size: 0.9375rem;
}

.showcase-feature-arrow {
    color: var(--primary-blue);
    font-size: 1.125rem;
}

/* CTA */
.showcase-detail-cta {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

/* Related Cross-Section Blocks (showcase page) */
.showcase-related-tutorials {
    margin-bottom: var(--spacing-xl);
}

/* ========== Showcase Cards (Shared: List + Related) ========== */
.showcase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.showcase-card {
    background: var(--background-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.showcase-card-content {
    padding: var(--spacing-lg);
}

.showcase-card-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.showcase-card-title a {
    color: var(--text-primary);
    text-decoration: none;
}

.showcase-card-title a:hover {
    color: var(--primary-blue);
}

.showcase-card-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.showcase-user-role {
    color: var(--text-secondary);
}

.showcase-card-metrics {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.showcase-metric-sm {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.showcase-metric-sm-value {
    font-size: 1.125rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
}

.showcase-metric-sm-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.showcase-card-quote {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
    border-left: 2px solid var(--primary-blue);
    padding-left: var(--spacing-sm);
    margin: 0;
}

/* ========== Showcase List Page ========== */
.showcase-section {
    padding-top: 100px;
    padding-bottom: var(--spacing-xxl);
}

.showcase-empty {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-xxl) 0;
}

/* Showcase Filters */
/* Shared filter styles: showcase + blog 共用筛选器样式 */
.showcase-filters,
.blog-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-sm);
}

.showcase-filter-btn,
.blog-filter-btn {
    display: inline-block;
    padding: 6px 16px;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    background: var(--background-primary);
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.showcase-filter-btn:hover,
.blog-filter-btn:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.showcase-filter-btn.active,
.blog-filter-btn.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: white;
}

/* Shared filter card transitions: showcase + blog */
.showcase-card,
.showcase-featured-card,
.blog-card,
.blog-featured-card {
    transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

/* Shared filter state styles: showcase + blog 共用筛选器状态样式 */
.showcase-card-hidden,
.blog-card-hidden {
    opacity: 0;
    transform: scale(0.95);
    pointer-events: none;
    position: absolute;
    visibility: hidden;
    height: 0;
    overflow: hidden;
    margin: 0;
    padding: 0;
    border: none;
}

.showcase-section-hidden,
.blog-section-hidden {
    display: none;
}

.showcase-no-results,
.blog-no-results {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
    color: var(--text-secondary);
    display: none;
}

.showcase-no-results p,
.blog-no-results p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
}

.showcase-no-results .showcase-filter-btn,
.blog-no-results .blog-filter-btn {
    margin-top: var(--spacing-sm);
}

/* Shared section headings: showcase + blog */
.showcase-section-heading,
.blog-section-heading {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

/* Shared featured section: showcase + blog */
.showcase-featured-section,
.blog-featured-section {
    margin-bottom: var(--spacing-xl);
}

/* Showcase Featured Card */
.showcase-featured-card {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-xl);
    align-items: start;
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.showcase-featured-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.showcase-featured-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.showcase-featured-title {
    font-size: 1.5rem;
    line-height: 1.3;
    margin-bottom: 0;
}

.showcase-featured-title a {
    color: var(--text-primary);
    text-decoration: none;
}

.showcase-featured-title a:hover {
    color: var(--primary-blue);
}

.showcase-featured-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 0;
}

.showcase-featured-link {
    display: inline-block;
    color: var(--primary-blue);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    font-size: 0.9375rem;
    margin-top: var(--spacing-xs);
}

.showcase-featured-link:hover {
    text-decoration: underline;
}

.showcase-featured-metrics {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--background-secondary);
    border-radius: var(--radius-md);
    min-width: 180px;
}

/* Shared regular section: showcase + blog */
.showcase-regular-section,
.blog-regular-section {
    margin-bottom: var(--spacing-xl);
}

/* Showcase Card Description */
.showcase-card-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Showcase Card Tags */
.showcase-card .showcase-tags {
    margin-top: var(--spacing-xs);
    margin-bottom: 0;
}

/* Showcase List CTA */
.showcase-list-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--background-secondary);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-lg);
}

.showcase-list-cta-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

/* ========== Showcase Submit Page ========== */
.showcase-submit-section {
    padding-top: 100px;
    padding-bottom: var(--spacing-xxl);
}

.showcase-submit-header {
    margin-bottom: var(--spacing-xl);
}

.showcase-submit-header h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.3;
    margin-bottom: var(--spacing-xs);
}

.showcase-submit-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 双栏布局 */
.showcase-submit-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

/* 侧栏指南 */
.showcase-submit-guide {
    position: sticky;
    top: 100px;
    background: var(--background-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.showcase-submit-guide-title {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.showcase-submit-guide-steps {
    list-style: none;
    counter-reset: guide-step;
    padding-left: 0;
}

.showcase-submit-guide-steps li {
    counter-increment: guide-step;
    position: relative;
    padding-left: 2rem;
    margin-bottom: var(--spacing-md);
}

.showcase-submit-guide-steps li::before {
    content: counter(guide-step);
    position: absolute;
    left: 0;
    top: 0;
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 50%;
    background: var(--primary-blue);
    color: white;
    font-size: 0.75rem;
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    justify-content: center;
}

.showcase-submit-guide-steps li strong {
    display: block;
    font-size: 0.9375rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 2px;
}

.showcase-submit-guide-steps li p {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* 表单区域 */
.showcase-submit-form-wrapper {
    min-width: 0;
}

.showcase-submit-fieldset {
    border: none;
    padding: 0;
    margin: 0 0 var(--spacing-xl) 0;
}

.showcase-submit-section-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid var(--border-color);
}

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

.form-group label {
    display: block;
    font-size: 0.9375rem;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-required {
    color: var(--error-red);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    font-size: 0.9375rem;
    font-family: var(--font-family);
    color: var(--text-primary);
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px var(--focus-ring-color);
}

.form-input.form-input-error,
.form-select.form-input-error,
.form-textarea.form-input-error {
    border-color: var(--error-red);
}

.form-input.form-input-error:focus,
.form-select.form-input-error:focus,
.form-textarea.form-input-error:focus {
    box-shadow: 0 0 0 3px var(--focus-ring-error-color);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%2386868B' d='M1.41 0L6 4.58 10.59 0 12 1.41l-6 6-6-6z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
    cursor: pointer;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
    line-height: 1.6;
}

.form-row {
    display: grid;
    gap: var(--spacing-md);
}

.form-row-2col {
    grid-template-columns: 1fr 1fr;
}

.form-error {
    display: none;
    font-size: 0.8125rem;
    color: var(--error-red);
    margin-top: 4px;
}

.form-error.visible {
    display: block;
}

.form-field-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
}

.form-char-count {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin-left: auto;
}

.form-help-text {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

/* 复选框组 */
.form-checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-xs);
}

.form-checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.form-checkbox-label:hover {
    background: var(--background-secondary);
}

.form-checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-blue);
    cursor: pointer;
    flex-shrink: 0;
}

.form-checkbox-text {
    font-size: 0.9375rem;
    color: var(--text-primary);
}

/* 授权同意 */
.form-group-consent {
    padding: var(--spacing-md);
    background: var(--background-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.form-consent-label {
    align-items: flex-start;
}

.form-consent-label .form-checkbox-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* 量化指标 */
.form-metrics-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-metrics-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
}

.form-input-metric {
    font-size: 0.875rem;
}

/* 提交按钮 */
.form-actions {
    text-align: center;
    padding-top: var(--spacing-sm);
}

.showcase-submit-btn {
    min-width: 200px;
}

.showcase-submit-btn.loading {
    opacity: 0.7;
    cursor: not-allowed;
}

/* 成功消息 */
.showcase-submit-success {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
}

.showcase-submit-success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--success-green);
    color: white;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.showcase-submit-success h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.showcase-submit-success p {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

/* 响应式 */
@media (max-width: 768px) {
    .showcase-submit-layout {
        grid-template-columns: 1fr;
    }

    .showcase-submit-guide {
        position: static;
    }

    .form-row-2col {
        grid-template-columns: 1fr;
    }

    .form-checkbox-group {
        grid-template-columns: 1fr;
    }

    .form-metrics-row {
        grid-template-columns: 1fr;
    }
}

/* ========== Blog List Page ========== */
.blog-section {
    padding-top: 100px;
    padding-bottom: var(--spacing-xxl);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.blog-card {
    background: var(--background-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-normal);
}

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

.blog-card-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.blog-card:hover .blog-card-image img {
    transform: scale(1.05);
}

.blog-card-content {
    padding: var(--spacing-lg);
}

.blog-card-category {
    display: inline-block;
    padding: 2px 10px;
    background: var(--tag-feature-bg);
    color: var(--tag-feature-color);
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.blog-card-category:hover {
    opacity: 0.8;
}

.blog-card-title {
    font-size: 1.125rem;
    line-height: 1.4;
    margin-bottom: var(--spacing-xs);
}

.blog-card-title a {
    color: var(--text-primary);
    text-decoration: none;
}

.blog-card-title a:hover {
    color: var(--primary-blue);
}

.blog-card-excerpt {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.blog-card-reading-time::before {
    content: '\00B7';
    margin-right: var(--spacing-xs);
}

.blog-rss-link {
    margin-top: var(--spacing-sm);
}

.blog-rss-link a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.blog-rss-link a:hover {
    color: var(--primary-blue);
}

.blog-empty {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-xxl) 0;
}

/* Blog Filters */
/* Blog filters/buttons: 样式与 showcase-filters/filter-btn 完全相同，
   通过逗号选择器在 Showcase 区域统一定义（搜索 "Shared filter styles"） */

/* Blog section-heading: 样式已在 Showcase 区域统一定义（搜索 "Shared section headings"） */

/* Blog featured-section: 样式已在 Showcase 区域统一定义（搜索 "Shared featured section"） */

/* Blog Featured Card */
.blog-featured-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-lg);
    transition: all var(--transition-normal);
}

.blog-featured-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.blog-featured-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.blog-featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
}

.blog-featured-card:hover .blog-featured-image img {
    transform: scale(1.05);
}

.blog-featured-info {
    padding: var(--spacing-lg) var(--spacing-xl) var(--spacing-lg) 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.blog-featured-title {
    font-size: 1.5rem;
    line-height: 1.3;
    margin-bottom: 0;
}

.blog-featured-title a {
    color: var(--text-primary);
    text-decoration: none;
}

.blog-featured-title a:hover {
    color: var(--primary-blue);
}

.blog-featured-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-featured-link {
    display: inline-block;
    color: var(--primary-blue);
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    font-size: 0.9375rem;
    margin-top: var(--spacing-xs);
}

.blog-featured-link:hover {
    text-decoration: underline;
}

/* Blog regular-section: 样式已在 Showcase 区域统一定义（搜索 "Shared regular section"） */

/* Blog filter transitions + card-hidden / section-hidden / no-results:
   样式已通过逗号选择器在 Showcase 区域统一定义（搜索 "Shared filter state styles"） */

/* ========== Newsletter Subscription ========== */
.newsletter-section {
    margin-top: var(--spacing-xxl);
    padding: var(--spacing-xxl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--gradient-subtle-start), var(--gradient-subtle-end));
    border-radius: var(--radius-lg);
    text-align: center;
}

.newsletter-content {
    max-width: 520px;
    margin: 0 auto;
}

.newsletter-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--primary-blue);
    color: #fff;
    margin-bottom: var(--spacing-md);
}

.newsletter-title {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.newsletter-subtitle {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.newsletter-input-group {
    display: flex;
    gap: var(--spacing-xs);
}

.newsletter-input {
    flex: 1;
    padding: 12px 16px;
}

.newsletter-btn {
    white-space: nowrap;
    padding: 12px 24px;
}

.newsletter-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.newsletter-message {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    line-height: 1.5;
    display: none;
}

.newsletter-message.success {
    display: block;
    color: var(--success-green);
}

.newsletter-message.error {
    display: block;
    color: var(--error-red);
}

.newsletter-success-text {
    font-size: 1rem;
    color: var(--success-green);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-md) 0;
}

@media (max-width: 768px) {
    .newsletter-section {
        padding: var(--spacing-xl) var(--spacing-md);
        margin-top: var(--spacing-xl);
    }

    .newsletter-input-group {
        flex-direction: column;
    }

    .newsletter-btn {
        width: 100%;
    }
}

/* ========== Blog Article Page ========== */
.blog-article {
    padding-top: 100px;
    padding-bottom: var(--spacing-xxl);
}

.blog-article .container {
    max-width: 800px;
}

/* Article Header */
.blog-article-header {
    margin-bottom: var(--spacing-lg);
}

.blog-article-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

.blog-article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.blog-article-meta-sep {
    color: var(--text-tertiary);
}

.blog-article-author {
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

/* Share Buttons */
.blog-article-share {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: auto;
}

.blog-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--background-secondary);
    color: var(--text-secondary);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.blog-share-btn.copied {
    background: var(--success-green);
    color: white;
}

/* Hero Image */
.blog-article-hero {
    margin-bottom: var(--spacing-xl);
}

.blog-article-hero img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

/* Article Layout: Content + TOC */
.blog-article-layout {
    display: grid;
    grid-template-columns: 1fr 200px;
    gap: var(--spacing-xl);
    align-items: start;
    position: relative;
}

/* When no TOC, full width */
.blog-article-layout .blog-article-body:only-child {
    grid-column: 1 / -1;
}

/* TOC Sidebar */
.blog-article-toc {
    order: 1;
    position: sticky;
    top: 100px;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
}

.blog-toc-inner {
    padding: var(--spacing-md);
    background: var(--background-secondary);
    border-radius: var(--radius-md);
}

.blog-toc-title {
    font-size: 0.8125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.blog-article-toc nav#TableOfContents ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.blog-article-toc nav#TableOfContents ul ul {
    padding-left: var(--spacing-sm);
}

.blog-article-toc nav#TableOfContents li {
    margin-bottom: 4px;
}

.blog-article-toc nav#TableOfContents a {
    display: block;
    font-size: 0.8125rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 4px 0;
    line-height: 1.4;
    transition: color var(--transition-fast);
}

.blog-article-toc nav#TableOfContents a:hover {
    color: var(--primary-blue);
}

/* Article Body (Blog-specific overrides) */
.blog-article-body {
    order: 0;
    min-width: 0;
}

.blog-article-body h2 {
    padding-top: var(--spacing-sm);
}

.blog-article-body blockquote p {
    margin-bottom: var(--spacing-xs);
}

.blog-article-body pre {
    background: var(--text-primary);
    color: #e2e8f0;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
    font-size: 0.875rem;
    line-height: 1.6;
}

.blog-article-body code {
    font-family: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
    font-size: 0.875em;
}

.blog-article-body p code,
.blog-article-body li code {
    background: var(--background-secondary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--primary-blue-dark);
}

.blog-article-body a {
    color: var(--primary-blue);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.blog-article-body a:hover {
    color: var(--primary-blue-dark);
}

.blog-article-body hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xl) 0;
}

.blog-article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
    font-size: 0.9375rem;
}

.blog-article-body th,
.blog-article-body td {
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    text-align: left;
}

.blog-article-body th {
    background: var(--background-secondary);
    font-weight: var(--font-weight-semibold);
}

/* Tags */
.blog-article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    padding-top: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.blog-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--background-secondary);
    color: var(--text-secondary);
    border-radius: var(--radius-xl);
    font-size: 0.8125rem;
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
}

a.blog-tag:hover {
    background: var(--primary-blue);
    color: #fff;
}

/* CTA */
.blog-article-cta {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
}

/* Related Cross-Section Blocks (blog page) */
.blog-related-posts {
    margin-bottom: var(--spacing-xl);
}

/* ========== Responsive Design ========== */
@media (max-width: 1024px) {
    .hero-conversion .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-conversion .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-conversion .hero-image {
        order: -1;
    }

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

    .contrast-arrow {
        transform: rotate(90deg);
        padding: 20px 0;
    }

    .value-cards-grid {
        grid-template-columns: 1fr;
    }

    /* Showcase */
    .showcase-featured-card {
        grid-template-columns: 1fr;
    }

    .showcase-featured-metrics {
        flex-direction: row;
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        min-width: auto;
    }

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

    /* Blog */
    .blog-featured-card {
        grid-template-columns: 1fr;
    }

    .blog-featured-info {
        padding: 0 var(--spacing-lg) var(--spacing-lg);
    }

    .blog-article-layout {
        grid-template-columns: 1fr;
    }

    .blog-article-toc {
        order: -1;
        position: static;
        max-height: none;
    }

    .blog-toc-inner {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .blog-article-toc nav#TableOfContents ul ul {
        display: none;
    }
}

@media (max-width: 768px) {
    /* Navigation */
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: var(--transition-normal);
        box-shadow: var(--shadow-lg);
        padding: var(--spacing-lg) 0;
    }

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

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-cta-btn {
        display: none;
    }

    /* Hero */
    .hero-conversion {
        padding: 100px 0 60px;
    }

    .hero-conversion .hero-title {
        font-size: 1.75rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .stat-divider {
        width: 60px;
        height: 1px;
    }

    /* Demo Timeline */
    .demo-timeline {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    /* Testimonials */
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    /* Homepage Featured Sections */
    .homepage-featured-section {
        padding: 60px 0;
    }

    .homepage-featured-grid {
        grid-template-columns: 1fr;
    }

    /* Pricing */
    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .pricing-pro {
        transform: none;
    }

    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-links-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    /* Final CTA */
    .final-cta-title {
        font-size: 1.75rem;
    }

    /* Blog + Showcase: 移动端筛选器横向滚动 */
    .blog-filters,
    .showcase-filters {
        overflow-x: auto;
        flex-wrap: nowrap;
        -webkit-overflow-scrolling: touch;
    }

    .blog-featured-card {
        grid-template-columns: 1fr;
    }

    .blog-featured-info {
        padding: 0 var(--spacing-md) var(--spacing-md);
    }

    .blog-featured-title {
        font-size: 1.25rem;
    }

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

    .blog-article-meta {
        font-size: 0.8125rem;
    }

    .blog-article-share {
        margin-left: 0;
        margin-top: var(--spacing-xs);
        width: 100%;
    }

    .blog-article-toc {
        display: none;
    }

    /* Blog Category & Tag pages */
    .blog-tag-icon {
        font-size: 1.75rem;
    }

    .blog-taxonomy-empty {
        padding: var(--spacing-xl) var(--spacing-sm);
    }

    .blog-article-body pre {
        font-size: 0.8125rem;
    }

    .blog-related-posts .blog-grid,
    .blog-related-cases .showcase-grid,
    .showcase-related-tutorials .blog-grid,
    .showcase-related-cases .showcase-grid {
        grid-template-columns: 1fr;
    }

    /* Showcase Detail */
    .showcase-metrics-bar {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .showcase-metric {
        flex-direction: row;
        gap: var(--spacing-sm);
        justify-content: center;
    }

    .showcase-metric-value {
        font-size: 1.5rem;
    }

    .showcase-quote-block {
        padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
    }

    .showcase-quote-block p {
        font-size: 1.0625rem;
    }

    /* showcase-filters 响应式已在上方 Blog 区域统一定义 */

    .showcase-featured-card {
        padding: var(--spacing-lg);
    }

    .showcase-featured-title {
        font-size: 1.25rem;
    }

    .showcase-featured-metrics .showcase-metric {
        flex-direction: row;
        gap: var(--spacing-sm);
        justify-content: center;
    }

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

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

    .showcase-card-metrics {
        flex-wrap: wrap;
    }
}

/* ========== Blog Category & Tag Pages ========== */

/* Filter bar link style (for category pages using <a> instead of <button>) */
a.blog-filter-btn {
    text-decoration: none;
}

/* Taxonomy page post count */
.blog-taxonomy-count {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-lg);
}

/* Taxonomy empty state */
.blog-taxonomy-empty {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-md);
    color: var(--text-secondary);
}

.blog-taxonomy-empty p {
    margin-bottom: var(--spacing-lg);
    font-size: 1.125rem;
}

/* Tag page header */
.blog-tag-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.blog-tag-icon {
    font-size: 2.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-blue);
    line-height: 1;
}

/* Back to blog link */
.blog-back-link {
    display: inline-block;
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-lg);
    transition: color var(--transition-fast);
}

.blog-back-link:hover {
    color: var(--primary-blue-dark);
}

/* Secondary button style */
.btn-secondary {
    display: inline-block;
    padding: 10px 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-primary);
    background: var(--background-primary);
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-secondary:hover {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

/* ========== Notification Toast ========== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    max-width: 400px;
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-md);
    z-index: 1001;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.notification-visible {
    transform: translateX(0);
}

.notification-success {
    border-left: 4px solid var(--success-green);
}

.notification-error {
    border-left: 4px solid var(--error-red);
}

.notification-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    gap: var(--spacing-sm);
}

.notification-message {
    flex: 1;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.notification-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.notification-close:hover {
    color: var(--text-primary);
}

/* ========== Cookie Consent Banner ========== */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: rgba(29, 29, 31, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 1.5rem;
    animation: cookieSlideUp 0.3s ease-out;
}

@keyframes cookieSlideUp {
    from { transform: translateY(100%); }
    to   { transform: translateY(0); }
}

.cookie-consent-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.cookie-consent-text {
    color: #F5F5F7;
    font-size: 0.875rem;
    line-height: 1.5;
    flex: 1;
}

.cookie-consent-link {
    color: var(--primary-blue-light);
    text-decoration: underline;
    margin-left: 0.25rem;
}

.cookie-consent-link:hover {
    color: #fff;
}

.cookie-consent-actions {
    display: flex;
    gap: 0.75rem;
    flex-shrink: 0;
}

.cookie-btn {
    padding: 0.5rem 1.25rem;
    border-radius: 980px;
    font-size: 0.875rem;
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.cookie-btn-accept {
    background: var(--primary-blue);
    color: #fff;
}

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

.cookie-btn-decline {
    background: transparent;
    color: #F5F5F7;
    border: 1px solid rgba(245, 245, 247, 0.3);
}

.cookie-btn-decline:hover {
    border-color: rgba(245, 245, 247, 0.6);
}

@media (max-width: 640px) {
    .cookie-consent-inner {
        flex-direction: column;
        text-align: center;
    }
    .cookie-consent-actions {
        width: 100%;
        justify-content: center;
    }
}

/* ========== Comparison Page ========== */

.comparison-hero {
    padding: 80px 0 60px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: #fff;
    text-align: center;
}

.comparison-hero h1 {
    font-family: var(--font-family);
    font-size: 2.2rem;
    font-style: normal;
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-sm);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.comparison-hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto var(--spacing-sm);
    line-height: 1.6;
}

.comparison-hero-updated {
    font-size: 0.85rem;
    opacity: 0.7;
}

/* Summary Cards */
.comparison-summary {
    padding: var(--spacing-xxl) 0;
    background: var(--background-secondary);
}

.comparison-summary h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xl);
}

.comparison-summary-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    max-width: 1000px;
    margin: 0 auto;
}

.comparison-summary-card {
    background: var(--background-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.comparison-summary-card:first-child {
    border: 2px solid var(--primary-blue);
}

.comparison-summary-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.comparison-summary-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
}

.comparison-summary-best {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Comparison Table */
.comparison-table-section {
    padding: var(--spacing-xxl) 0;
}

.comparison-table-section h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xl);
}

.comparison-table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 700px;
    font-size: 0.95rem;
}

.comparison-table thead {
    background: var(--background-secondary);
}

.comparison-table th {
    padding: var(--spacing-md) var(--spacing-sm);
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.comparison-table th.comparison-feature-col {
    text-align: left;
    width: 180px;
    position: sticky;
    left: 0;
    background: var(--background-secondary);
    z-index: 2;
}

.comparison-table th.comparison-quest2do-col {
    background: rgba(0, 122, 255, 0.08);
    color: var(--primary-blue);
}

.comparison-table td {
    padding: var(--spacing-sm);
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    vertical-align: middle;
    line-height: 1.5;
}

.comparison-table th.comparison-feature-label {
    text-align: left;
    font-weight: 500;
    color: var(--text-primary);
    position: sticky;
    left: 0;
    background: var(--background-primary);
    z-index: 1;
    padding: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
    line-height: 1.5;
    font-size: 0.95rem;
}

.comparison-table td.comparison-quest2do-col {
    background: rgba(0, 122, 255, 0.04);
}

.comparison-table tbody tr:hover td,
.comparison-table tbody tr:hover th.comparison-feature-label {
    background: rgba(0, 122, 255, 0.02);
}

.comparison-table tbody tr:hover td.comparison-quest2do-col {
    background: rgba(0, 122, 255, 0.07);
}

.comparison-category-row th {
    background: var(--background-secondary) !important;
    font-weight: 700;
    font-size: 1rem;
    text-align: left !important;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.compare-check {
    color: var(--success-green);
    font-weight: 700;
}

.compare-cross {
    color: var(--border-color);
    font-weight: 400;
}

/* Detailed Comparison Content (from Markdown) */
.comparison-details {
    padding: var(--spacing-xxl) 0;
    background: var(--background-secondary);
}

.comparison-details h2 {
    font-size: 1.6rem;
    margin: var(--spacing-xl) 0 var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--primary-blue);
}

.comparison-details h3 {
    font-size: 1.2rem;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    color: var(--text-primary);
}

.comparison-details p {
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

.comparison-details ul, .comparison-details ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.comparison-details li {
    line-height: 1.7;
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

.comparison-details table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0 var(--spacing-lg);
    font-size: 0.9rem;
}

.comparison-details table th {
    background: var(--background-primary);
    padding: var(--spacing-sm);
    text-align: left;
    font-weight: 600;
    border-bottom: 2px solid var(--border-color);
}

.comparison-details table td {
    padding: var(--spacing-sm);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    text-align: left;
}

.comparison-details strong {
    color: var(--text-primary);
}

.comparison-details hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-xl) 0;
}

/* Recommendation Cards */
.comparison-recommendation {
    padding: var(--spacing-xxl) 0;
}

.comparison-recommendation h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xl);
}

.comparison-rec-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
    max-width: 1100px;
    margin: 0 auto;
}

.comparison-rec-card {
    background: var(--background-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal);
}

.comparison-rec-card:hover {
    transform: translateY(-4px);
}

.comparison-rec-highlight {
    border: 2px solid var(--primary-blue);
    box-shadow: var(--shadow-md);
    position: relative;
}

.comparison-rec-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.comparison-rec-card h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
}

.comparison-rec-ideal {
    color: var(--primary-blue);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.comparison-rec-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-md);
}

.comparison-rec-card li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding: 4px 0;
    line-height: 1.5;
}

.comparison-rec-card li::before {
    content: "•";
    color: var(--primary-blue);
    font-weight: 700;
    margin-right: 8px;
}

.comparison-rec-cta {
    display: block;
    text-align: center;
    margin-top: auto;
}

/* Comparison FAQ */
.comparison-faq {
    padding: var(--spacing-xxl) 0;
    background: var(--background-secondary);
}

.comparison-faq h2 {
    text-align: center;
    font-size: 1.8rem;
    margin-bottom: var(--spacing-xl);
}

.comparison-faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.comparison-faq .faq-item {
    background: var(--background-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.comparison-faq .faq-question {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    gap: var(--spacing-sm);
}

.comparison-faq .faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-blue);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.comparison-faq .faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.comparison-faq .faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

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

.comparison-faq .faq-answer p {
    padding: 0 var(--spacing-lg) var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Comparison CTA */
.comparison-cta {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: #fff;
    text-align: center;
}

.comparison-cta h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.comparison-cta p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.comparison-cta .btn-xlarge {
    background: #fff;
    color: var(--primary-blue);
    font-weight: 700;
    padding: 16px 48px;
    font-size: 1.1rem;
    border-radius: var(--radius-lg);
    display: inline-block;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.comparison-cta .btn-xlarge:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.comparison-cta-note {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-top: var(--spacing-sm);
}

/* Comparison Page Responsive */
@media (max-width: 1024px) {
    .comparison-summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    .comparison-rec-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .comparison-hero {
        padding: 60px 0 40px;
    }
    .comparison-hero h1 {
        font-size: 1.6rem;
    }
    .comparison-hero-subtitle {
        font-size: 1rem;
    }
    .comparison-summary-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    .comparison-rec-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }
    .comparison-table-section h2,
    .comparison-summary h2,
    .comparison-recommendation h2,
    .comparison-faq h2 {
        font-size: 1.4rem;
    }
    .comparison-cta h2 {
        font-size: 1.5rem;
    }
    .comparison-details h2 {
        font-size: 1.3rem;
    }
}

@media (max-width: 640px) {
    .comparison-table {
        font-size: 0.85rem;
    }
    .comparison-table th,
    .comparison-table td {
        padding: 8px 6px;
    }
    .comparison-table th.comparison-feature-col,
    .comparison-table th.comparison-feature-label {
        min-width: 120px;
    }
}

/* ========== Helper Download Page ========== */

/* Section 1: Hero Banner */
.helper-hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
    color: white;
    padding: calc(80px + var(--spacing-lg)) 0 var(--spacing-xxl);
    text-align: center;
}
.helper-hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: white;
}
.helper-hero-subtitle {
    font-size: 1.25rem; opacity: 0.9;
    max-width: 600px; margin: 0 auto var(--spacing-xl); line-height: 1.6;
}
.helper-breadcrumb { font-size: 0.875rem; opacity: 0.7; margin-bottom: var(--spacing-lg); }
.helper-breadcrumb a { color: rgba(255,255,255,0.8); text-decoration: none; }
.helper-breadcrumb a:hover { color: white; }

/* 三态下载按钮 */
.helper-download-area {
    min-height: 100px;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    margin: var(--spacing-xl) auto;
}
.helper-download-loading {
    color: rgba(255,255,255,0.9); font-size: 1rem;
    display: flex; align-items: center; justify-content: center; min-height: 80px;
}
.helper-loading-spinner {
    width: 24px; height: 24px;
    border: 3px solid rgba(255,255,255,0.3); border-top-color: white;
    border-radius: 50%; animation: helper-spin 0.8s linear infinite; margin-right: 8px;
}
@keyframes helper-spin { to { transform: rotate(360deg); } }

.helper-download-btn {
    display: inline-flex; flex-direction: column; align-items: center;
    background: white; color: var(--primary-blue);
    padding: 20px 48px; font-size: 1.25rem; gap: 8px;
    border-radius: var(--radius-md); box-shadow: var(--shadow-lg);
    text-decoration: none; font-weight: var(--font-weight-medium);
    transition: all var(--transition-fast);
}
.helper-download-btn:hover {
    background: var(--gradient-subtle-start);
    color: var(--primary-blue-dark);
    transform: translateY(-2px); box-shadow: var(--shadow-xl);
}
.helper-btn-icon { font-size: 1.5rem; font-weight: bold; }
.helper-btn-text { font-weight: var(--font-weight-semibold); font-size: 1.125rem; }
.helper-btn-subtext { font-size: 0.75rem; opacity: 0.7; margin-top: 2px; }

.helper-file-info {
    display: flex; align-items: center; justify-content: center; gap: var(--spacing-md);
    margin-top: var(--spacing-sm); font-size: 0.875rem; color: rgba(255,255,255,0.75);
}
.helper-sha256 code {
    font-family: 'SF Mono', 'Fira Code', monospace; font-size: 0.75rem;
    background: rgba(255,255,255,0.15); padding: 2px 8px; border-radius: 4px;
    color: rgba(255,255,255,0.9);
}

/* 安全性背书行 */
.helper-security-badges {
    display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
    gap: var(--spacing-sm); margin-top: var(--spacing-md);
    font-size: 0.9375rem; color: rgba(255,255,255,0.85);
}
.helper-security-item { display: inline-flex; align-items: center; }
.helper-security-check { color: var(--success-green); font-weight: bold; margin-right: 4px; }
.helper-security-divider { opacity: 0.4; }

/* 移动端提示 */
.helper-mobile-notice {
    display: none;
    background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--radius-md); padding: var(--spacing-md) var(--spacing-lg);
    text-align: center; max-width: 400px; margin: var(--spacing-md) auto 0;
}
.helper-mobile-icon { font-size: 1.5rem; }
.helper-mobile-notice p { font-size: 0.9375rem; line-height: 1.5; margin: var(--spacing-xs) 0 0; color: rgba(255,255,255,0.9); }

/* Section 2: What is Helper */
.helper-what-section { padding: 100px 0; background: var(--background-primary); }

/* Section 3: Why Helper */
.helper-why-section { padding: 100px 0; background: linear-gradient(180deg, var(--background-secondary) 0%, var(--background-primary) 100%); }
.helper-info-box {
    background: var(--background-secondary); border-left: 4px solid var(--primary-blue);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--spacing-lg) var(--spacing-xl); max-width: 800px;
    margin: 0 auto var(--spacing-xl);
}
.helper-info-box p { color: var(--text-secondary); line-height: 1.7; margin: 0; }
.helper-info-box code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    background: rgba(0,122,255,0.1); color: var(--primary-blue);
    padding: 2px 6px; border-radius: 4px; font-size: 0.9em;
}
.helper-flow {
    display: flex; align-items: center; justify-content: center; gap: var(--spacing-lg);
    max-width: 800px; margin: 0 auto; flex-wrap: wrap;
}
.helper-flow-step {
    text-align: center; background: white; border-radius: var(--radius-lg);
    padding: var(--spacing-lg); box-shadow: var(--shadow-md);
    flex: 1; min-width: 160px; max-width: 220px;
}
.helper-flow-icon { font-size: 2.5rem; margin-bottom: var(--spacing-xs); }
.helper-flow-label { font-weight: var(--font-weight-semibold); color: var(--text-primary); font-size: 1rem; margin-bottom: 6px; }
.helper-flow-desc { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.4; }
.helper-flow-arrow { font-size: 1.5rem; color: var(--primary-blue); font-weight: bold; flex-shrink: 0; }

/* Section 4: Installation Steps */
.helper-install-section { padding: 100px 0; background: var(--background-primary); }
.helper-install-steps { max-width: 720px; margin: 0 auto var(--spacing-xl); }
.helper-install-step {
    display: flex; gap: var(--spacing-lg); padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--border-color);
}
.helper-install-step:last-child { border-bottom: none; }
.helper-step-number {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
    color: white; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-weight: var(--font-weight-bold); font-size: 1.125rem; flex-shrink: 0;
}
.helper-step-content h3 { font-size: 1.125rem; color: var(--text-primary); margin-bottom: var(--spacing-xs); }
.helper-step-content p { color: var(--text-secondary); line-height: 1.6; margin: 0; }
.helper-step-content code {
    font-family: 'SF Mono', 'Fira Code', monospace;
    background: var(--background-secondary); color: var(--primary-blue);
    padding: 2px 6px; border-radius: 4px; font-size: 0.875em;
}
.helper-step-tip {
    display: flex; align-items: flex-start; gap: var(--spacing-xs);
    margin-top: var(--spacing-sm); padding: 10px var(--spacing-sm);
    background: rgba(0,122,255,0.08); border-radius: var(--radius-sm);
    font-size: 0.875rem; color: var(--primary-blue-dark);
}
.helper-step-tip-icon {
    width: 18px; height: 18px; background: var(--primary-blue); color: white;
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 0.75rem; font-weight: bold; flex-shrink: 0;
}
.helper-install-cta { text-align: center; padding-top: var(--spacing-xl); }

/* Section 5: System Requirements */
.helper-requirements-section { padding: 100px 0; background: var(--background-secondary); }
.helper-req-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-xl); max-width: 900px; margin: 0 auto; }
.helper-req-list { list-style: none; padding: 0; margin: 0 0 var(--spacing-md); }
.helper-req-list li {
    display: flex; align-items: flex-start; gap: 10px; padding: 10px 0;
    color: var(--text-secondary); border-bottom: 1px solid var(--border-color);
    font-size: 0.9375rem; line-height: 1.5;
}
.helper-req-list li:last-child { border-bottom: none; }
.helper-check { color: var(--success-green); font-weight: bold; flex-shrink: 0; }
.helper-req-note {
    padding: 12px var(--spacing-sm); background: var(--background-secondary);
    border-radius: var(--radius-sm); font-size: 0.875rem;
    color: var(--text-secondary); text-align: center;
}
.helper-req-note a { color: var(--primary-blue); font-weight: var(--font-weight-medium); }

/* Helper Final CTA Requirements Link */
.final-cta-req-link { color: rgba(255,255,255,0.8); text-decoration: none; }
.final-cta-req-link:hover { color: white; }

/* Helper Responsive */
@media (max-width: 1024px) {
    .helper-what-section .value-cards-grid { grid-template-columns: 1fr; max-width: 500px; margin-left: auto; margin-right: auto; }
    .helper-req-grid { grid-template-columns: 1fr; }
    .helper-flow { flex-direction: column; align-items: center; }
    .helper-flow-arrow { transform: rotate(90deg); }
    .helper-flow-step { max-width: 300px; }
}
@media (max-width: 768px) {
    .helper-hero { padding: calc(70px + var(--spacing-sm)) 0 var(--spacing-xl); }
    .helper-download-btn { padding: 16px 32px; font-size: 1.1rem; }
    .helper-sha256, .desktop-only { display: none !important; }
    .helper-mobile-notice { display: block; }
    .helper-security-badges { flex-direction: column; gap: var(--spacing-xs); }
    .helper-security-divider { display: none; }
    .helper-install-step { flex-direction: column; gap: var(--spacing-sm); }
    .helper-what-section, .helper-why-section, .helper-install-section,
    .helper-requirements-section, .helper-faq-section { padding: 60px 0; }
}